PEDAL DEVICE

In a pedal device, a first elastic member is deformed in accordance with a sliding operation of a first guide of a first holder in a vehicle longitudinal direction with a second guide of a second holder by a force from a pedal when the pedal rotates. Further, due to the force from the pedal when the pedal rotates, a second elastic member is deformed in accordance with a sliding operation of the second guide in the vehicle longitudinal direction with a third guide of a guide member. Further, the first guide and the second guide are made to restrict movement in a vehicle vertical direction. In addition, the second holder and the third guide are made to mutually restrict movement in the vehicle vertical direction.

TECHNICAL FIELD

The present disclosure relates to a pedal device.

BACKGROUND

Conventionally, a pedal simulator is known, which includes a brake pedal, an actuation rod, a cylinder, a piston, a plurality of springs, and a plurality of spring seats. The actuation rod is connected to the brake pedal. The actuation rod is inserted into the cylinder. The piston is provided within the cylinder to receive the force of the actuation rod. The plurality of springs are connected and arranged in series in multiple stages within the cylinder to support the piston. The plurality of spring seats are arranged to respectively support the plurality of springs within the cylinder.

SUMMARY

According to one aspect of the present disclosure, a pedal device includes: a pedal configured to rotate about a rotation axis in accordance with a pedaling operation of an operator; a first elastic member configured to be deformed by a pedaling force from the pedal as the pedal rotates, and to generate a reaction force against the pedaling force of the operator; a second elastic member configured to be deformed by a pedaling force from the pedal as the pedal rotates, and to generate a reaction force against the pedaling force of the operator; a first holder including a first support that is arranged adjacent to the pedal and supports one end of the first elastic member, and a first guide that extends from the first support in a deformation direction of the first elastic member; a second holder including a second support that supports an another end of the first elastic member, a second guide that extends in the deformation direction of the first elastic member, and a third support that supports one end of the second elastic member; a fourth support supporting an another end of the second elastic member; and a third guide extending from the fourth support in a deformation direction of the second elastic member. The first guide moves in the deformation direction of the first elastic member relative to the second guide and slides with the second guide in the deformation direction of the first elastic member, to deform the first elastic member, in accordance with the pedaling force from the pedal as the pedal rotates. The second holder moves in the deformation direction of the second elastic member relative to the third guide, and slides with the third guide in the deformation direction of the second elastic member, to deform the second elastic member, in accordance with the pedaling force from the pedal as the pedal rotates. In addition, the first guide and the second guide are disposed to be restricted with each other in a movement on a direction perpendicular to the deformation direction of the first elastic member, and the second holder and the third guide are disposed to be restricted with each other in a movement on a direction perpendicular to the deformation direction of the second elastic member.

DETAILED DESCRIPTION

According to studies by the inventors of the present application, in a pedal simulator, if movement of a spring seat in a direction perpendicular to a direction of deformation of a spring is not restricted, the spring seat may have a freely movement, such as tilting with respect to a movement direction of a piston or shifting in a direction perpendicular to the movement direction of the piston. Thus, the spring seat may enter inside of the spring that serves as an elastic member, thereby inhibiting a deformation of the spring.

It is an object of the present disclosure to provide a pedal device that suppresses inhibition of deformation of an elastic member.

According to one aspect of the present disclosure, a pedal device includes: a pedal configured to rotate about a rotation axis in accordance with a pedaling operation of an operator; a first elastic member configured to be deformed by a pedaling force from the pedal as the pedal rotates, and to generate a reaction force against the pedaling force of the operator; a second elastic member configured to be deformed by a pedaling force from the pedal as the pedal rotates, and to generate a reaction force against the pedaling force of the operator; a first holder including a first support that is arranged adjacent to the pedal and supports one end of the first elastic member, and a first guide that extends from the first support in a deformation direction of the first elastic member; a second holder including a second support that supports an another end of the first elastic member, a second guide that extends in the deformation direction of the first elastic member, and a third support that supports one end of the second elastic member; a fourth support supporting an another end of the second elastic member; and a third guide extending from the fourth support in a deformation direction of the second elastic member. The first guide moves in the deformation direction of the first elastic member relative to the second guide and slides with the second guide in the deformation direction of the first elastic member, to deform the first elastic member, in accordance with the pedaling force from the pedal as the pedal rotates. The second holder moves in the deformation direction of the second elastic member relative to the third guide, and slides with the third guide in the deformation direction of the second elastic member, to deform the second elastic member, in accordance with the pedaling force from the pedal as the pedal rotates. In addition, the first guide and the second guide are disposed to be restricted with each other in a movement on a direction perpendicular to the deformation direction of the first elastic member, and the second holder and the third guide are disposed to be restricted with each other in a movement on a direction perpendicular to the deformation direction of the second elastic member.

According to the above, the first guide and the second guide are prevented from entering inside of the first elastic member, thereby suppressing inhibition of deformation of the first elastic member. Further, the second holder and the third guide are prevented from entering inside of the second elastic member, thereby suppressing inhibition of deformation of the second elastic member.

Hereinafter, embodiments will be described with reference to the drawings. In the following embodiments, the same or equivalent portions are denoted by the same reference numerals, and the description thereof will be omitted.

First Embodiment

A pedal device1of the present embodiment is used, for example, as a brake pedal in a brake-by-wire system150that controls the brakes of a vehicle. First, the brake-by-wire system150will be explained.

The brake-by-wire system150includes wheel cylinders131to134, an ECU110, a brake circuit120, and the pedal device1, as shown inFIG.1.

The wheel cylinders131to134are respectively arranged at a wheel of the vehicle. Further, brake pads (not shown) are attached to each of the wheel cylinders131to134.

The ECU110includes a first ECU111and a second ECU112. The first ECU111includes a microcomputer, a drive circuit, and the like (not shown). Further, the first ECU111controls a first brake circuit121of the brake circuit120, which will be described later, based on a signal from the pedal device1, which will be described later. The second ECU112includes a microcomputer, a drive circuit, and the like (not shown). Further, the second ECU112controls a second brake circuit122of the brake circuit120, which will be described later, based on a signal from the pedal device1, which will be described later.

The brake circuit120has the first brake circuit121and the second brake circuit122. The first brake circuit121includes a reservoir124, a motor123, a gear mechanism125, and a master cylinder126. The reservoir124stores brake fluid. The motor123drives the gear mechanism125. The gear mechanism125reciprocates a master piston127included in the master cylinder126in an axial direction of the master cylinder126. The second brake circuit122includes a solenoid valve (not shown) and the like. Further, the second brake circuit122controls the hydraulic pressure of each of the wheel cylinders131to134by opening and closing the solenoid valve in response to a control signal from the second ECU112.

Here, in order to explain the pedal device1in the following, a front-rear direction of the vehicle is defined as a vehicle longitudinal direction Da. An up-down direction of the vehicle is defined as a vehicle vertical direction Db. A left-right direction of the vehicle is defined as a vehicle lateral direction Dc. The front in the vehicle longitudinal direction Da is described as a vehicle front. The rear in the vehicle longitudinal direction Da is referred to as a vehicle rear. The upper part in the vehicle vertical direction Db is referred to as a vehicle upward. The lower part in the vehicle vertical direction Db is referred to as a vehicle downward. The left side in the vehicle lateral direction Dc is referred to as a vehicle left side. The right side in the vehicle lateral direction Dc is referred to as a vehicle right side.

The pedal device1includes a pedal10, a stroke sensor30, a housing40, and a reaction force generation mechanism60, as shown inFIGS.2to5.

The pedal10is operated by being stepped on by the driver of the vehicle, as shown inFIGS.2and3. The driver of the vehicle corresponds to an operator.

Specifically, the pedal10includes a pedal part12, a lever part14, a lever protrusion16, and a lever flange18. The pedal part12is stepped on by the driver. The lever part14is connected to the pedal part12. Further, the lever part14rotates about a rotation axis O when the pedal part12is stepped on by the driver. The lever protrusion16is connected to a vehicle front side of the lever part14, and protrudes from a boundary with the lever part14in a vehicle front direction. The lever flange18is connected to the lever protrusion16, and protrudes from a boundary with the lever protrusion16in a direction perpendicular to the direction in which the lever protrusion16protrudes.

The stroke sensor30is arranged, for example, on the rotation axis O of the lever part14. Further, the stroke sensor30includes a magnet, a yoke, a Hall element, and the like. Thereby, the stroke sensor30detects a rotation angle and a stroke amount of the pedal10by detecting the rotation angle of the lever part14. Further, the stroke sensor30outputs signals corresponding to the detected rotation angle and the stroke amount of the pedal10to the first ECU111and the second ECU112. The stroke sensor30has a Hall element to detect the rotation angle and the stroke amount of the pedal10, but is not limited to such configuration, and may have an MR element or the like to detect the rotation angle and the stroke amount of the pedal10. MR is an abbreviation for Magneto Resistive. Further, the stroke amount is, for example, an amount of movement of the pedal part12in the vehicle longitudinal direction Da.

The housing40is attached to a dash panel200of the vehicle, and is formed in a cylindrical shape with a bottom so that it accommodates a portion of the lever part14, the stroke sensor30, and the reaction force generation mechanism60, which will be described later. The dash panel200is a partition wall that separates an outside of a vehicle interior, such as an engine room, and the like from the vehicle interior, and is sometimes called a bulkhead. Further, outside the vehicle interior, not only the vehicle engine but also a vehicle battery, an air conditioner, and the like are arranged.

Specifically, the housing40includes a housing bottom42, a housing cylinder44, a panel attachment part46, a panel bolt48, and a housing restrictor50.

The housing bottom42extends in the vehicle longitudinal direction Da. Further, the rotation axis O of the lever part14and the stroke sensor30are attached to the housing bottom42. Further, the housing bottom42supports a part of the lever part14so that the lever part14can rotate about the rotation axis O, and also supports the stroke sensor30.

The housing cylinder44corresponds to a fourth support, is connected to an end of the housing bottom42in the vehicle longitudinal direction Da, and extends in a vehicle downward direction from a boundary with the housing bottom42. Further, the housing cylinder44accommodates a part of the lever part14, the stroke sensor30, and the reaction force generation mechanism60, which will be described later.

The panel attachment part46is connected to an end of the housing bottom42on a vehicle front side and on a vehicle upper side, and extends from a boundary with the housing bottom42in a vehicle upward direction. Further, the panel attachment part46is connected to an end of the housing cylinder44on a vehicle front side and on a vehicle lower side, and extends in the vehicle downward direction from a boundary with the housing cylinder44. A hole is formed in the panel attachment part46, and the panel bolt48is inserted into the hole of the panel attachment part46and a hole of the dash panel200, so that the housing40is attached to the dash panel200.

The housing restrictor50is connected to an inner surface of the housing cylinder44located on the vehicle front side, and protrudes from the inner surface in the vehicle rear direction. Further, the housing restrictor50is formed with a hole into which a guide member63, which will be described later, is inserted.

The reaction force generation mechanism60generates a reaction force against a driver's pedaling force applied to the pedal part12. Specifically, as shown inFIG.4, the reaction force generation mechanism60includes a first holder61, a second holder62, a guide member63, a first elastic member71, a second elastic member72, and a third elastic member73.

The first holder61is made of resin, for example. Further, the first holder61includes a first support610, a holder restrictor612, and a first guide614. Although the first holder61is made of resin, it is not limited thereto, and the first holder61may be made of metal or the like, for example.

The first support610is, for example, formed in a plate shape extending in a direction perpendicular to the vehicle longitudinal direction Da. The holder restrictor612is connected to the first support610, and protrudes from the first support610in a vehicle rear direction. For example, as shown inFIGS.4and5, the first guide614is formed in a cylindrical shape that extends in the vehicle front direction from one side of the first support610opposite to the holder restrictor612.

The second holder62is made of resin, for example. Further, the second holder62includes a second support620, a second guide622, a holder cylinder624, and a third support626. Although the second holder62is made of resin, it is not limited thereto, and the second holder62may be made of metal or the like, for example.

The second support620is formed in a plate shape extending in a direction perpendicular to the vehicle longitudinal direction Da, and is also formed in an annular shape.

The second guide622is connected to an inside of the second support620in a direction perpendicular to the vehicle longitudinal direction Da, and has a cylindrical shape extending from a boundary with the second support620in the vehicle rear direction. Further, a part of the second guide622is inserted into a hole of the first guide614. Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an inner surface of the first guide614and an outer surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

The holder cylinder624is connected to an outside of the second support620in a direction perpendicular to the vehicle longitudinal direction Da, and extends from a boundary with the second support620in the vehicle rear direction.

The third support626is formed in a plate shape extending in a direction perpendicular to the vehicle longitudinal direction Da, and is also formed in an annular shape. Further, the third support626is connected to one side of the holder cylinder624opposite to the second support620, and is therefore disposed on the vehicle rear side relative to the second support620. Further, a part of the first guide614is inserted into a hole of the third support626.

The guide member63includes a third guide633. The third guide633is made of metal, for example. Further, the third guide633is formed in a columnar shape extending in the vehicle longitudinal direction Da. Further, a part of the third guide633is inserted into a hole of the housing cylinder44and the housing restrictor50. Further, a part of the third guide633is inserted into a hole of the second guide622. Thereby, movement of the second guide622and the third guide633in the vehicle vertical direction Db is mutually restricted with each other. Further, since the second guide622and the third guide633extend in the vehicle longitudinal direction Da, an inner surface of the second guide622and an outer surface of the third guide633slide with each other in the vehicle longitudinal direction Da.

Here, a distance between the first holder61and the second holder62in the vehicle longitudinal direction Da, i.e., a movement distance of the first holder61up to coming into contact with the second holder62after the pedal10is stepped on by the driver of the vehicle, is defined as a first distance L1. For example, here, the first distance L1is a distance from the first guide614to the second support620in the vehicle longitudinal direction Da. Also, a distance between the second holder62and an opposing part facing in a movement direction of the second holder62in the vehicle longitudinal direction Da, i.e., a movement distance of the second holder62up to coming into contact with the opposing part, is defined as a second distance L2. For example, here, the second distance L2is a distance from the second holder62to the housing restrictor50in the vehicle longitudinal direction Da.

The first elastic member71, the second elastic member72, and the third elastic member73are arranged in series in here. Specifically, the first elastic member71is, for example, a coil spring, and is elastically deformable in the vehicle longitudinal direction Da. Further, the first guide614and the second guide622are arranged inside the first elastic member71. In such manner, the movement of the first elastic member71in the vehicle vertical direction Db is restricted. Further, the first elastic member71is supported by the first support610and the second support620by being in contact with the first support610and the second support620. Further, when the pedal part12is not stepped on by the driver, the first elastic member71is elastically deformed, i.e., is compressed here. Here, when the pedal part12is not stepped on by the driver, the first elastic member71is elastically deformed, but the present disclosure is not limited thereto, and the first elastic member71may be not elastically deformed in a situation described above. In such case, a length of the first elastic member71is a free length.

The second elastic member72is, for example, a coil spring, and is elastically deformable in the vehicle longitudinal direction Da. Further, the second elastic member72is supported by the second support620and the housing cylinder44by being in contact with the third support626and the housing cylinder44. Further, the housing restrictor50and the holder cylinder624are arranged inside the second elastic member72. In such manner, the movement of the second elastic member72in the vehicle vertical direction Db is restricted. Further, when the second elastic member72is projected toward the first elastic member71in the vehicle vertical direction Db, the projected second elastic member72and the first elastic member71overlap. Further, when the pedal part12is not stepped on by the driver, the second elastic member72is elastically deformed, i.e., is compressed here. Here, when the pedal part12is not stepped on by the driver, the second elastic member72is elastically deformed, but the second elastic member72is not limited thereto, and may be not elastically deformed in a situation described above. In such case, a length of the second elastic member72is a free length.

The third elastic member73is, for example, a coil spring, and is elastically deformable in the vehicle longitudinal direction Da. Further, the third elastic member73is supported by the first support610by being in contact with the first support610. Further, the holder restrictor612is arranged inside the third elastic member73. In such manner, the movement of the third elastic member73in the vehicle vertical direction Db is restricted. Further, when the pedal part12is not stepped on by the driver, the third elastic member73is in contact with the lever flange18by having a part of the lever protrusion16inserted inside the third elastic member73. At such time, the third elastic member73is elastically deformed, i.e., is compressed here. Here, when the pedal part12is not stepped on by the driver, the third elastic member73is elastically deformed, but the present disclosure is not limited thereto, and the third elastic member73may be not elastically deformed in a situation described above. In such case, a length of the third elastic member73is a free length. Further, the third elastic member73and the lever flange18are in contact with each other when the pedal part12is not stepped on by the driver, but the present disclosure is not limited thereto in a situation described above. When the pedal part12is not stepped on by the driver, the third elastic member73and the lever flange18may be non-contact due to separation between the third elastic member73and the lever flange18being positioned away from each other.

The brake-by-wire system150is configured as described above. Next, the operation of the pedal device1will be explained.

When the pedal part12is stepped on by the driver of the vehicle, the lever part14rotates together with the pedal part12about the rotation axis O. In such manner, a force from the pedal part12is transmitted to the third elastic member73via the lever flange18, thereby compressing the third elastic member73. Further, the force from the pedal part12is transmitted to the first holder61. Thus, the first holder61moves in the vehicle front direction, during which the inner surface of the first guide614slides along the outer surface of the second guide622in the vehicle front direction, and the first elastic member71is compressed by being pushed by the first support610. Further, the force from the pedal part12is transmitted to the second holder62. Thereby, the second holder62moves in the vehicle front direction, during which the inner surface of the second guide622slides along the outer surface of the third guide633in the vehicle front direction, and the second elastic member72is compressed by being pushed by the third support626. Therefore, a reaction force is generated as a restoring force that is generated when the first elastic member71, the second elastic member72, and the third elastic member73are compressed. Due to such reaction force, even when the mechanical connection between the pedal10and the master cylinder126is abolished, the pedal device1generates the same reaction as when the pedal is connected to the master cylinder126, that is, when the reaction force by hydraulic pressure can be obtained.

At such time, the stroke sensor30detects the rotation angle and the stroke amount of the pedal part12by detecting the rotation angle of the lever part14. Further, the stroke sensor30outputs the detected rotation angle and stroke amount of the pedal part12to the first ECU111and the second ECU112.

At such time, the first ECU111rotates the motor123by supplying electric power to the motor123, for example. Thereby, the gear mechanism125is driven, and the master piston127moves. Therefore, the hydraulic pressure of the brake fluid supplied from the reservoir124to the master cylinder126increases. The increased hydraulic pressure is supplied to the second brake circuit122.

Further, the second ECU112supplies electric power to a solenoid valve (not shown) of the second brake circuit122, for example. Thereby the solenoid valve of the second brake circuit122opens. Therefore, the brake fluid supplied to the second brake circuit122is supplied to each of the wheel cylinders131to134. Therefore, the brake pads attached to the wheel cylinders131to134rub against their corresponding brake discs. In such manner, each wheel is braked, thereby decelerates the vehicle. At such time, the second ECU112may perform ABS control, VSC control, collision avoidance control, regeneration coordination control, and the like based on the signal from the stroke sensor30and the signal from other electronic control devices (not shown). Note that, ABS is an abbreviation for Anti-lock Braking System. Further, VSC is an abbreviation for Vehicle Stability Control.

Here, for example, when the second holder62and the third guide633are fixed, when the first holder61moves by the first distance L1, an absolute value of a deceleration amount of the vehicle is equal to or greater than a first threshold value, and the vehicle stops. Further, when the first guide614and the second guide622are fixed, when the second holder62moves by the second distance L2, an absolute value of the deceleration amount of the vehicle is equal to or greater than a second threshold value, and the vehicle stops. The first threshold value and the second threshold value are set through experiments, simulations, and the like so that a sufficient amount of deceleration of the vehicle can be obtained.

Thereafter, when the driver of the vehicle stops stepping on the pedal part12, the first holder61and the second holder62are pushed back in the vehicle rear direction by the restoring forces of the first elastic member71and the second elastic member72. Thereby, the inner surface of the first guide614slides along the outer surface of the second guide622in the vehicle rear direction, and the inner surface of the second guide622slides along the outer surface of the third guide633in the vehicle rear direction. Further, the lever flange18is pushed back by the restoring force of the third elastic member73. Therefore, the position of the pedal10returns to an initial position of when the pedal part12is not stepped on by the driver of the vehicle.

The pedal device1operates in such manner. In the pedal device1described above, stuck of rotation of the pedal10at a time when the pedal10is stepped on is suppressed, and inhibition of deformation of the first elastic member71and the second elastic member72is suppressed. Next, a description will be given about how to suppress the pedal10from being stuck, i.e., stuck of rotation thereof.

Here, a case in which the pedal10becomes stuck to be non-rotatable will be described using a first comparative pedal device901and a second comparative pedal device902. Now, the first comparative pedal device901will be explained first. As shown inFIG.6, the first comparative pedal device901includes a first comparative guide911, a first comparative support921, a second comparative support931, a first comparative elastic member941, and a second comparative elastic member951together with a comparative pedal (not shown).

The first comparative guide911is formed in a cylindrical shape with a bottom, thereby accommodating therein the first comparative support921, the second comparative support931, the first comparative elastic member941, and the second elastic members951respectively described in detail later. The first comparative support921and the second comparative support931are formed in a plate shape extending in a direction perpendicular to the left-right direction in the drawing. Further, side surfaces of the first comparative support921and the second comparative support931extending in the left-right direction in the drawing slide against an inner surface of the first comparative guide911in the left-right direction in the drawing. Further, the second comparative support931is disposed on the left side of the drawing relative to the first comparative support921. The first comparative elastic member941is disposed at a position between the first comparative support921and the second comparative support931, and is supported by the first comparative support921and the second comparative support931. The second comparative elastic member951is disposed at a position between bottoms of the second comparative support931and the first comparative guide911, and is supported by the bottoms of the second comparative support931and the first comparative guide911. Further, the first comparative elastic member941and the second comparative elastic member951are elastically deformed in the left-right direction in the drawing.

Then, in the first comparative pedal device901, for example, minute objects or foreign objects entering from outside enter a gap between the first comparative support921and the first comparative guide911at a sliding portion. At such time, the first comparative support921and the first comparative guide911are fixed, and the first comparative support921becomes unmovable along the first comparative guide911. Thereby, the first comparative elastic member941becomes stiff, i.e., not elastically deformable, thereby the force of the comparative pedal (not shown) is no longer transmittable therefrom to the second comparative support931. Therefore, the second comparative support931also becomes unmovable along the first comparative guide911. Thereby, the comparative pedal (not shown) becomes non-rotatable. Further, the reaction force by the first comparative elastic member941and the second comparative elastic member951is no longer transmittable to the comparative pedal (not shown). Here, the minute objects are, for example, abrasion particles generated by sliding between (a) the first comparative support921or the second comparative support931and (b) the first comparative guide911or similar objects.

Next, the second comparative pedal device902will be explained. As shown inFIG.7, the second comparative pedal device902includes a third comparative support912, a fourth comparative support922, and a fifth comparative support932. Further, the second comparative pedal device902includes a first comparative cylinder942, a second comparative cylinder952, a second comparative guide962, a third comparative elastic member972, and a fourth comparative elastic member982together with a comparative pedal (not shown).

The third comparative support912, the fourth comparative support922, or the fifth comparative support932is formed in a plate shape extending in a direction perpendicular to the left-right direction in the drawing. The fourth comparative support922is arranged on the left side of the drawing relative to the third comparative support912. The fifth comparative support932is arranged on the left side of the drawing relative to the fourth comparative support922. The first comparative cylinder942is connected to the third comparative support912, and extends from a boundary with the third comparative support912to the left in the drawing. The second comparative cylinder952is connected to the fourth comparative support922, and extends from a boundary with the fourth comparative support922to the left in the drawing. The second comparative guide962is connected to the fifth comparative support932, and is formed in a columnar shape extending from the fifth comparative support932to the right in the drawing. Further, a part of the second comparison guide962is inserted into a hole of the first comparison cylinder942and a hole of the second comparison cylinder952. Further, an outer surface of the second comparative guide962that extends in the left-right direction in the drawing slides in the left-right direction (i) along an inner surface the first comparison cylinder942extending in the left-right direction in the drawing, and (ii) along an inner surface of the second comparison cylinder952extending in the left-right direction in the drawing. The third comparative elastic member972is disposed at a position between the third comparative support912and the fourth comparative support922, and is supported by the third comparative support912and the fourth comparative support922. The fourth comparative elastic member982is disposed at a position between the fourth comparative support922and the fifth comparative support932, and is supported by the fourth comparative support922and the fifth comparative support932. Further, the third comparative elastic member972and the fourth comparative elastic member982are elastically deformed in the left-right direction in the drawing.

In the second comparative pedal device902as well, for example, minute objects or foreign objects from outside enter a gap between the first comparative cylindrical portion942and the second comparative guide962at the sliding portion. At such time, the first comparative cylinder942and the second comparative guide962are fixed, and the first comparative cylinder942become unmovable along the second comparative guide962. Accordingly, the third comparative elastic member972becomes stiff, i.e., not elastically deformable, thereby the force of the comparative pedal (not shown) is no longer transmittable to the fourth comparative support922and the second comparative cylinder952. Therefore, the second comparative cylinder952also becomes unmovable along the second comparative guide962. Thereby, the comparative pedal (not shown) becomes non-rotatable. Further, the reaction force by the third comparative elastic member972and the fourth comparative elastic member982is no longer transmittable to the comparative pedal (not shown). Here, the minute objects are, for example, abrasion powder generated by sliding between (a) the first comparative cylinder942or the second comparative cylinder952and (b) the second comparative guide962.

In contrast, in the pedal device1of the present embodiment, the first guide614slides along the second guide622in the vehicle longitudinal direction Da due to the force from the pedal10when the pedal10rotates, thereby deforming the first elastic member71. Further, due to the force from the pedal10when the pedal10rotates, the second guide622of the second holder62slides with the third guide633along the vehicle longitudinal direction Da, so that the second elastic member72is deformed. The vehicle longitudinal direction Da corresponds to the deformation direction of the first elastic member71and the deformation direction of the second elastic member72.

Thus, when the second holder62and the third guide633are fixed, the first guide614and the second guide622slide with each other in the vehicle longitudinal direction Da by the force from the rotation of the pedal10. Further, when the first guide614and the second guide622are fixed, the second guide622of the second holder62and the third guide633slide with each other in the vehicle longitudinal direction Da by the force from the rotation of the pedal10. Therefore, even when one of the two sliding portions is fixed, the other sliding portion is slidable. Thus, when the pedal10is stepped on, the stuck of the pedal10to become non-rotatable can be suppressed.

Next, a description will be given about how inhibition of deformation of the first elastic member71and the second elastic member72is suppressed. In the pedal device1of the present embodiment, the first guide614and the second guide622mutually restrict movement with each other in the vehicle vertical direction Db. The vehicle vertical direction Db corresponds to a direction perpendicular to the deformation direction of the first elastic member71.

Thus, the first guide614and the second guide622entering the inside of the first elastic member71can be suppressed, thereby suppressing inhibition of elastic deformation of the first elastic member71. Further, since the first elastic member71is suppressed from being caught by the first guide614and the second guide622, thereby damage of the first elastic member71is also suppressible. Therefore, non-transmission of the restoring force of the first elastic member71to the pedal10can be suppressed, thereby suppressing stuck of the pedal10, i.e., no return of the pedal10to its original position can be suppressed.

Further, the second holder62and the third guide633mutually restrict movement of the other in the vehicle vertical direction Db. The vehicle vertical direction Db corresponds to a direction perpendicular to the deformation direction of the second elastic member72.

Thus, the second holder62and the third guide633entering the inside of the second elastic member72can be suppressed, thereby suppressing inhibition of the elastic deformation of the second elastic member72. Further, the second elastic member72is suppressed from being caught by the second holder62and the third guide633, thereby damage to the second elastic member72is also suppressible. Therefore, non-transmission of the restoring force of the second elastic member72to the pedal10can be suppressed, thereby suppressing the stuck of the pedal10, i.e., no return of the pedal10to its original position can be suppressed.

Further, the first embodiment also achieves the following effects.

[1-1] The first guide614is formed in a cylindrical shape. The second guide622is formed in a cylindrical shape. Thereby, during an assembly of the first guide614and the second guide622, the shapes of the first guide614and the second guide622can easily fit to each other even when the first guide614and/or the second guide622rotate about the axis. Therefore, when assembling the first guide614and the second guide622, it is possible to assemble the first guide614and the second guide622without considering the rotation direction of the first guide614and the second guide622about their axes. Thus, assembly of the first guide614and the second guide622is made easy.

Further, the third guide633is formed in a columnar shape. Thereby, during an assembly of the second guide622and the third guide633, their shapes can easily fit to each other even when the second guide622and the third guide633rotate about the axis. Therefore, when assembling the second guide622and the third guide633, it is possible to assemble the second guide622and the third guide633without considering the rotation direction of the second guide622and the third guide633about their axes. Thus, assembly of the second guide622and the third guide633is made easy.

[1-2] The deformation direction of the first elastic member71, the deformation direction of the second elastic member72, and the deformation direction of the third elastic member73are in a linear direction perpendicular to the rotation axis O in here, i.e., are aligned in the vehicle longitudinal direction Da. Thereby, the first elastic member71, the second elastic member72, and the third elastic member73are easily compressible without tilting, thereby generating a stable reaction force.

[1-3] When the second elastic member72is projected in the vehicle vertical direction Db, projection of the second elastic member72and the first elastic member71overlap. The vehicle vertical direction Db corresponds to a direction perpendicular to the deformation direction of the second elastic member72.

Thereby, a volume of the reaction force generation mechanism60in the vehicle longitudinal direction Da becomes smaller compared to a case where the projection of the second elastic member72in the vehicle vertical direction Db and the first elastic member71do not overlap. Therefore, the increase in the volume of the pedal device1can be suppressed.

[1-4] A space is formed inside the first elastic member71, and the first guide614and the second guide622are arranged inside the first elastic member71. Thereby, compared to a case where the first guide614and the second guide622are arranged outside the first elastic member71, the volume of the first holder61and the second holder62in the vehicle vertical direction Db becomes smaller. Therefore, the increase in the volume of the pedal device1can be suppressed. Further, since the first guide614and the second guide622are surrounded by the first elastic member71, foreign objects from the outside are less likely to enter the sliding portions of the first guide614and the second guide622.

[1-5] A space is formed inside the second elastic member72, and the second guide622and the third guide633are arranged inside the second elastic member72. Therefore, the volume of the second holder62in the vehicle vertical direction Db becomes smaller compared to a case where the second guide622and the third guide633are arranged outside the second elastic member72. Therefore, the increase in the volume of the pedal device1can be suppressed. Further, since the second guide622and the third guide633are surrounded by the second elastic member72, foreign objects from the outside are less likely to enter the sliding portions of the second guide622and the third guide633.

[1-6] The first guide614and the second guide622restrict movement of the first elastic member71in the vehicle vertical direction Db. Thereby, the first elastic member71becomes difficult to move in the vehicle vertical direction Db, thereby friction with the first support610and the second support620respectively supporting the first elastic member71becomes difficult to occur. Therefore, an amount of wear on the first elastic member71, the first support610, and the second support620can be reduced. Further, due to difficulty of movement of the first elastic member71in the vehicle vertical direction Db, the first elastic member71is compressible without tilting, thereby a stable reaction force is generated. The first guide614and the second guide622may be used as a restrictor.

[1-7] The holder cylinder624and the housing restrictor50restrict movement of the second elastic member72in the vehicle vertical direction Db. Thereby, the second elastic member72becomes difficult to move in the vehicle vertical direction Db, thereby friction with the third support626supporting the second elastic member72and the housing cylinder44becomes difficult to occur. Therefore, an amount of wear on the second elastic member72, the third support626, and the housing cylinder44can be reduced. Further, due to difficulty of movement of the second elastic member72in the vehicle vertical direction Db, the second elastic member72is compressible without tilting, thereby a stable reaction force is generated. The holder cylinder624and the housing restrictor50correspond to a restrictor.

[1-8] The third guide633includes metal. Thereby, due to characteristics of metal, which is a material relatively hard to deform, it is possible to suppress the third guide633from being damaged and from not sliding on the second guide622. Further, the housing40includes resin. Therefore, when forming the housing40connected to the third guide633, it is possible to perform integral molding, for example, by injection molding or the like. Further, the second guide622includes resin. Thereby, a coefficient of friction between the second guide622and the third guide633becomes smaller than when the second guide622and the third guide633are made of metal. Therefore, the frictional force between the second guide622and the third guide633can be reduced, thereby suppressing the generation of noise due to the friction between the second guide622and the third guide633. Further, since resin has a relatively low specific gravity, increase of the weight of the second guide622can be suppressed, thereby making it possible to make the second guide622lightweight. Therefore, increase of the weight of the pedal device1can be suppressed, thereby making the pedal device1lightweight.

[1-9] The first elastic member71, the second elastic member72, and the third elastic member73are coil springs. Thereby, the influence of temperature on the elastic coefficients of the first elastic member71, the second elastic member72, and the third elastic member73is relatively small. Further, the first elastic member71, the second elastic member72, and the third elastic member73have relatively high oil resistance, solvent resistance, and chemical resistance. Therefore, the first elastic member71, the second elastic member72, and the third elastic member73are relatively unlikely to deteriorate, thereby generating a stable reaction force.

[1-10] The pedal10is a brake pedal used in a vehicle. In the pedal device1of the present embodiment, since it is possible to suppress that the pedal10is stuck in a non-rotatable manner when the pedal10is stepped on, a non-brakable state of the vehicle in which the brake of the vehicle is not operable can be prevented.

[1-11] The first guide614faces the second support620in the vehicle longitudinal direction Da, and is movable toward the second support620by the force from the rotation of the pedal10. The second support620and the third support626face the housing cylinder44in the vehicle longitudinal direction Da, and are movable toward the housing cylinder44by the force from the rotation of the pedal10. Further, when the first holder61moves by an amount of the first distance L1, the absolute value of the deceleration amount of the vehicle becomes equal to or greater than the threshold value, and the vehicle stops. Further, when the second holder62moves by an amount of the second distance L2, the absolute value of the deceleration amount of the vehicle becomes equal to or greater than the threshold value, and the vehicle stops. As described above, the first threshold value and the second threshold value are set through experiments, simulations, and the like so that a sufficient amount of deceleration of the vehicle can be obtained.

Thereby, even when one of the two sliding portions is fixed, the pedal10is rotatable thereby sufficiently decelerating the vehicle. Thus, the non-brakable state of the vehicle can be suppressed.

[1-12] The housing40that accommodates the reaction force generation mechanism60is arranged on the vehicle interior side of the dash panel200that separates the exterior of the vehicle from the interior of the vehicle. Thereby, it is difficult for moisture and oil from the engine room to enter the vehicle interior, which makes it difficult for moisture and oil from the engine room to adhere to the first elastic member71, second elastic member72, and third elastic member73of the reaction force generation mechanism60. Further, external factors such as light and heat from the engine room are difficult to enter the vehicle interior. Therefore, the first elastic member71, the second elastic member72, and the third elastic member73are less likely to deteriorate, thereby improving durability thereof.

[1-13] The first elastic member71, the second elastic member72, and the third elastic member73are elastically deformed when the pedal10is not stepped on by the driver of the vehicle, and here in the present embodiment, they are compressed. Thereby, even when at least one of the first elastic member71, second elastic member72, and third elastic member73is damaged while being elastically deformed due to stepping-on of the pedal10by the driver of the vehicle, the pedal10is easily returnable back to its original position by the restoring force of those members restoring respective free lengths.

Second Embodiment

In the second embodiment, as shown inFIG.8, the shape of the pedal10is different from the first embodiment. Further, the form of the second holder62is different from the first embodiment. Further, the form of the guide member63is different from the first embodiment. Further, the housing40does not have the housing restrictor50. The other configurations other than the above are similar to those of the first embodiment.

A pedal10has a lever plate20instead of the lever protrusion16and the lever flange18. The lever plate20is formed in a plate shape and is connected to the vehicle front side of a lever part14. Further, the lever plate20is in contact with one side of a third elastic member73opposite to a first support610. In such configuration, the third elastic member73is not elastically deformed. Therefore, when a pedal part12is not stepped on by the driver, the third elastic member73has a free length. Here, when the pedal part12is not stepped on by the driver, the third elastic member73is not elastically deformed, but the third elastic member73is not limited thereto, and the third elastic member73may be elastically deformed in a situation described above. Further, the third elastic member73and the lever plate20are in contact with each other when the pedal part12is not stepped on by the driver, but the present disclosure is not limited thereto in a situation described above. When the pedal part12is not stepped on by the driver, the third elastic member73and the lever plate20may be non-contact due to separation between the third elastic member73and the lever plate20away from each other.

A second holder62does not include a holder cylinder624. Further, a second support620and a third support626of the second holder62are integrated to have one body.

A guide member63has a guide member bottom635in addition to a third guide633. The guide member bottom635corresponds to a fourth support. The guide member bottom635is made of resin, for example. Further, the guide member bottom635is connected to the third guide633. Further, the guide member bottom635is connected to an inner surface of the housing cylinder44positioned on the vehicle front side. Further, the guide member bottom635supports a second elastic member72by being in contact with one side of the second elastic member72opposite to the third support626.

A pedal device1of the second embodiment is configured in a manner described above. The second embodiment achieves effects similar to the effects achieved by the first embodiment.

Third Embodiment

In the third embodiment, as shown inFIG.9, the forms of the second holder62and the third guide633are different from those in the second embodiment. Other than the above, the second embodiment is the same as the second embodiment.

A second holder62has a second support620, a third support626, and a second guide622. The second support620is integrally formed with the third support626in a plate shape extending in the vehicle vertical direction Db. The second guide622is made of metal, for example. Further, the second guide622is connected to the second support620, and is formed in a columnar shape extending from a boundary with the second support620in the vehicle rear direction. Further, a part of the second guide622is inserted into a hole of the first guide614. In such manner, movements of a first guide614and the second guide622in the vehicle vertical direction Db are mutually restricted with each other. Further, an inner surface of the first guide614and an outer surface of the second guide622slide with each other in the vehicle longitudinal direction Da, due to the first guide614and the second guide622respectively extending in the vehicle longitudinal direction Da.

A third guide633is made of resin instead of metal. Further, the third guide633is formed in a cylindrical shape extending in the vehicle longitudinal direction Da, instead of having a columnar shape. Thereby, a guide member63is formed in a cylindrical shape with a bottom. Further, the second support620and the third support626are inserted into a hole of the third guide633. In such manner, the movement of the second support620, the third support626, and the third guide633in the vehicle vertical direction Db is restricted. Further, since the third guide633extends in the vehicle longitudinal direction Da, side surfaces of the second support620and the third support626extending in the vehicle longitudinal direction Da and an inner surface of the third guide633slide with each other.

A pedal device1of the third embodiment is configured in a manner described above. The third embodiment also achieves the same effects as the second embodiment.

Fourth Embodiment

In the fourth embodiment, as shown inFIG.10, the shape of the pedal10is different from that in the third embodiment. Further to the first holder61, the second holder62, the guide member63, the first elastic member71, the second elastic member72, and the third elastic member73, the reaction force generation mechanism60also includes a third holder65. Further, the form of the first holder61is different from the first embodiment. Other than these, the present embodiment is the same as the third embodiment.

A pedal10has a lever protrusion16instead of the lever plate20. The lever protrusion16is connected to a vehicle front side of a lever part14, and protrudes from a boundary with the lever part14in the vehicle front direction.

The third holder65is made of resin, for example. Further, the third holder65has a holder support650and a fourth guide654.

The holder support650is, for example, formed in a plate shape extending in a direction perpendicular to the vehicle longitudinal direction Da. Further, the holder support650is in contact with the lever protrusion16. The holder support650and the lever protrusion16are in contact with each other when a pedal part12is not stepped on by the driver, but the present disclosure is not limited thereto in a situation described above. When the pedal part12is not stepped on by the driver, the holder support650and the lever protrusion16may be non-contact due to separation between the holder support650and the lever protrusion16away from each other.

The fourth guide654is, for example, formed in a cylindrical shape extending in the vehicle front direction from an end surface of the holder support650on an opposite side to the lever protrusion16. Further, the fourth guide654is arranged inside a third elastic member73. According to the above, movement of the third elastic member73in the vehicle vertical direction Db is restricted.

A first holder61has a fifth guide615instead of the holder restrictor612. The fifth guide615is made of metal, for example. Further, the fifth guide615is connected to the first support610, and is formed in a columnar shape extending from a boundary with the first support610in the vehicle rear direction. Further, a part of the fifth guide615is inserted into a hole of the fourth guide654. Thereby, movement of the fourth guide654and the fifth guide615in the vehicle vertical direction Db is mutually restricted with each other. Further, since the fourth guide654and the fifth guide615extend in the vehicle longitudinal direction Da, an inner surface of the fourth guide654and an outer surface of the fifth guide615slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the fourth embodiment is configured in a manner described above. The fourth embodiment also achieves the same effects as the third embodiment.

Fifth Embodiment

In the fifth embodiment, as shown inFIG.11, the shape of the pedal10is different from that in the third embodiment. Further, the reaction force generation mechanism60does not include the third elastic member73and the third holder65. Further, the first holder61does not include the fifth guide615. The configurations other than the above are similar to those of the fourth embodiment.

A lever protrusion16of a pedal10contacts a first support610instead of contacting a holder support650. The lever protrusion16and the first support610are in contact with each other when a pedal part12is not stepped on by the driver, but the present disclosure is not limited thereto in a situation described above. When the pedal part12is not stepped on by the driver, the first support610and the lever protrusion16may be not in contact with each other due to separation between the lever protrusion16and the first support610away from each other.

A pedal device1of the fifth embodiment is configured in a manner described above. The fifth embodiment achieves effects similar to the effects achieved by the fourth embodiment.

Sixth Embodiment

In the sixth embodiment, as shown inFIG.12, the shapes of the first guide614and the second guide622are different from those in the fifth embodiment. Other than the above, the present embodiment is the same as the fifth embodiment.

A first guide614is made of metal instead of resin. Further, the first guide614is formed in a columnar shape instead of having a cylindrical shape. A second guide622is made of resin instead of metal. Further, the second guide622is formed in a cylindrical shape instead of having a columnar shape. Further, a part of the first guide614is inserted into a hole of the second guide622. Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an outer surface of the first guide614and an inner surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the sixth embodiment is configured in a manner described above. The sixth embodiment also achieves the same effects as the fifth embodiment.

Seventh Embodiment

In the seventh embodiment, as shown inFIG.13, the shapes of the first guide614and the second guide622are different from those in the fifth embodiment. The other configuration other than the above is the same as that of the fifth embodiment.

A first guide614is made of resin and has a cylindrical shape, and is disposed outside a first elastic member71.

A second guide622is made of resin instead of metal. Further, the second guide622is formed in a cylindrical shape instead of having a columnar shape. Further, a part of the first guide614is inserted into a hole of the second guide622. A part of the second guide622may be inserted into the hole of the first guide614.

Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an outer surface of the first guide614and an inner surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

Further, a part of the second guide622is inserted into a hole of a third guide633. Thereby, movement of the second guide622and the third guide633in the vehicle vertical direction Db is mutually restricted with each other. Further, since the second guide622and the third guide633extend in the vehicle longitudinal direction Da, an outer surface of the second guide622and an inner surface of the third guide633slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the seventh embodiment is configured in a manner described above. The seventh embodiment also achieves the same effects as the fifth embodiment.

Eighth Embodiment

In the eighth embodiment, as shown inFIG.14, the shapes of the first guide614and the second guide622are different from those in the fifth embodiment. The other configuration is the same as that of the seventh embodiment.

A second guide622extends from a second support620in the vehicle longitudinal direction Da. Further, a part of the second guide622is inserted into the hole of a first guide614. A part of the first guide614may be inserted into a hole of the second guide622.

Thereby, movement of the second guide622and the first guide614in the33/66vehicle vertical direction Db is restricted from each other. Further, an inner surface of the first guide614and an outer surface of the second guide622slide with each other in the vehicle longitudinal direction Da, due to the first guide614and the second guide622respectively extending in the vehicle longitudinal direction Da.

Further, a part of a third guide633is inserted into a hole of the second guide622. A part of the second guide622may be inserted into a hole of the third guide633.

Thereby, movement of the second guide622and the third guide633in the vehicle vertical direction Db is mutually restricted with each other. Further, since the second guide622and the third guide633extend in the vehicle longitudinal direction Da, an inner surface of the second guide622and an outer surface of the third guide633slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the eighth embodiment is configured in a manner described above. The eighth embodiment also achieves the same effects as the seventh embodiment.

Ninth Embodiment

In the ninth embodiment, as shown inFIG.15, the forms of the second holder62and the third guide633are different from those in the fifth embodiment. The other configuration other than the above is the same as that of the fifth embodiment.

A second holder62includes a fourth guide654, in addition to a second support620, a third support626, and a second guide622.

The fourth guide654is made of resin, for example. Further, the fourth guide654is connected to the second support620, and is formed in a cylindrical shape extending from a boundary with the second support620in the vehicle front direction.

The third guide633is made of metal instead of resin. Further, the third guide633is formed in a columnar shape instead of having a cylindrical shape. Further, a part of the third guide633is inserted into the hole of the fourth guide654. Thereby, the movement of the third guide633and the fourth guide654in the vehicle vertical direction Db is mutually restricted with each other. Further, since the third guide633and the fourth guide654extend in the vehicle longitudinal direction Da, an outer surface of the third guide633and an inner surface of the fourth guide654slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the ninth embodiment is configured in a manner described above. The ninth embodiment also achieves the same effects as the fifth embodiment.

Tenth Embodiment

In the tenth embodiment, as shown inFIG.16, the shapes of the first guide614, the second support620, the third support626, the second guide622, and the third guide633are different from those in the fifth embodiment. The other configuration other than the above is the same as that of the fifth embodiment.

A first guide614is made of metal instead of resin. Further, the first guide614is formed in a columnar shape instead of having a cylindrical shape. A second support620and a third support626are formed in an annular shape.

A second guide622is made of resin instead of metal. Further, the second guide622is formed in, instead of having a columnar shape, a cylindrical shape extending in the vehicle longitudinal direction Da. Further, a hole of the first guide614communicates with a hole of the second guide622. Further, a part of the first guide614is inserted into the hole of the second guide622.

The third guide633is made of metal instead of resin. Further, the third guide633is formed in a columnar shape instead of having a cylindrical shape. Further, a part of the third guide633is inserted into the hole of the second guide622. Thereby, movement of the second guide622and the third guide633in the vehicle vertical direction Db is mutually restricted with each other. Further, since the second guide622and the third guide633extend in the vehicle longitudinal direction Da, an inner surface of the second guide622and an outer surface of the third guide633slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the tenth embodiment is configured in a manner described above. The tenth embodiment also achieves the same effects as the fifth embodiment.

Eleventh Embodiment

In the eleventh embodiment, as shown inFIG.17, the shapes of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from those in the ninth embodiment. Other than the above, the eleventh embodiment is the same as the ninth embodiment.

A first guide614is made of metal instead of resin. Further, the first guide614is formed in a columnar shape instead of having a cylindrical shape.

A second guide622is made of resin instead of metal. Further, the second guide622is formed in a cylindrical shape instead of having a columnar shape. Further, a part of the first guide614is inserted into a hole of the second guide622. Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an outer surface of the first guide614and an inner surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

A third guide633is made of resin instead of metal. Further, the third guide633is formed in a cylindrical shape instead of having a columnar shape.

A fourth guide654is made of metal instead of resin. Further, the fourth guide654is formed in a columnar shape instead of having a cylindrical shape. Further, a part of the fourth guide654is inserted into a hole of the third guide633. Thereby, the movement of the third guide633and the fourth guide654in the vehicle vertical direction Db is mutually restricted with each other. Further, since the third guide633and the fourth guide654extend in the vehicle longitudinal direction Da, an inner surface of the third guide633and an outer surface of the fourth guide654slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the eleventh embodiment is configured in a manner described above. The eleventh embodiment also achieves the same effects as the ninth embodiment.

Twelfth Embodiment

In the twelfth embodiment, as shown inFIG.18, the shapes of the first guide614and the second guide622are different from those in the ninth embodiment. Other than the above, the twelfth embodiment is the same as the ninth embodiment.

A first guide614is made of resin and has a cylindrical shape, and is disposed outside a first elastic member71.

A second guide622is made of resin instead of metal. Further, the second guide622is formed in a cylindrical shape instead of having a columnar shape. Further, a part of the first guide614is inserted into a hole of the second guide622. A part of the first guide614is inserted into a hole of the second guide622.

Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, an inner surface of the first guide614and an outer surface of the second guide622slide with each other in the vehicle longitudinal direction Da, due to the first guide614and the second guide622respectively extending in the vehicle longitudinal direction Da.

A pedal device1of the twelfth embodiment is configured in a manner described above. The twelfth embodiment also achieves the same effects as the ninth embodiment.

Thirteenth Embodiment

In the thirteenth embodiment, as shown inFIG.19, the forms of the first support610, the first guide614, the second support620, the second guide622, the third guide633, the first elastic member71and the second elastic member72are different from the fifth embodiment. The other configuration other than the above is the same as that of the fifth embodiment.

A first support610extends in a direction intersecting the vehicle longitudinal direction Da and the vehicle vertical direction Db.

A first guide614is connected to the first support610, and extends in a clockwise direction of rotation about an axis extending from a boundary with the first support610in the vehicle lateral direction Dc.

A second support620extends in a direction intersecting the vehicle longitudinal direction Da and the vehicle vertical direction Db.

A second guide622is connected to the second support620, and extends in a counterclockwise direction of rotation about an axis extending from a boundary with the second support620in the vehicle lateral direction Dc.

A third guide633is connected to a guide member bottom635, and extends in the counterclockwise direction of rotation about an axis extending from the guide member bottom635in the vehicle lateral direction Dc.

The first elastic member71and the second elastic member72are elastically deformed in the clockwise direction of rotation about an axis extending in the vehicle lateral direction Dc, instead of being elastically deformed in a straight travel direction. The vehicle lateral direction Dc corresponds to a direction of the rotation axis O. Further, the deformation direction of the first elastic member71and the second elastic member72corresponds to a tangential direction of a circle centered on the rotation axis O.

A pedal device1of the thirteenth embodiment is configured in a manner described above. The thirteenth embodiment also achieves the same effects as the fifth embodiment. Further, the thirteenth embodiment also achieves the effects described below.

[2] The deformation direction of the first elastic member71and the second elastic member72is a rotation direction about an axis extending in the vehicle lateral direction Dc. Thereby, compared to a case where the deformation direction of the first elastic member71and the second elastic member72is the straight travel direction, the first elastic member71and the second elastic member72respectively have a longer length by a length in a direction intersecting the straight travel direction. Therefore, a deformation range of the first elastic member71and the second elastic member72becomes larger, a movement range of the first holder61and the second holder62becomes larger. Therefore, due to an increase in a range of rotational movement of the pedal10, it becomes easier to adjust a step-on operation of the pedal10.

Fourteenth Embodiment

In the fourteenth embodiment, as shown inFIG.20, the form of the second elastic member72is different from that in the fifth embodiment. The other configuration other than the above is the same as that of the fifth embodiment.

A second elastic member72is made of rubber instead of a coil spring. A first elastic member71may be made of rubber instead of a coil spring.

A pedal device1of the fourteenth embodiment is configured in a manner described above. The fourteenth embodiment also achieves the same effects as the fifth embodiment.

Fifteenth Embodiment

In the fifteenth embodiment, as shown inFIGS.21and22, the first guide614, the second guide622, the second support620, the third support626, and the third guide633have a form different from the fifth embodiment. The other configuration other than the above is the same as that of the fifth embodiment.

As shown inFIG.21, a first guide614is formed in a polygonal tube shape such as a hexagonal tube shape or the like instead of having a cylindrical shape. A second guide622is formed in a polygonal column shape, such as a hexagonal column39/66shape, or the like corresponding to a hole of the first guide614instead of having a columnar shape.

As shown inFIG.22, a second support620and a third support626are formed in a polygonal plate shape such as a hexagonal plate shape or the like instead of having a disk shape. A third guide633is formed in a polygonal tube shape such as a hexagonal tube shape or the like corresponding to the shapes of the second support620and the third support626instead of having a cylindrical shape.

A pedal device1of the fifteenth embodiment is configured in a manner described above. The fifteenth embodiment also achieves the same effects as the fifth embodiment.

Sixteenth Embodiment

In the sixteenth embodiment, as shown inFIGS.23and24, the shapes of the first guide614and the third guide633are different from those in the fifth embodiment.

As shown inFIG.23, a first guide614is formed in a polygonal tube shape such as a square tube shape or the like instead of having a cylindrical shape. As shown inFIG.24, a third guide633is formed in a polygonal tube shape such as a square tube shape or the like instead of having a cylindrical shape.

A pedal device1of the sixteenth embodiment is configured in a manner described above. The sixteenth embodiment also achieves the same effects as the fifth embodiment.

Seventeenth Embodiment

In the seventeenth embodiment, as shown inFIG.25, the forms of the second support620and the third support626are different from those in the fifth embodiment. Specifically, a second support620and a third support626are made of metal instead of resin. The other configuration other than the above is the same as that of the fifth embodiment.

A pedal device1of the seventeenth embodiment is configured in a manner described above. The seventeenth embodiment also achieves the same effects as the fifth embodiment.

Eighteenth Embodiment

In the eighteenth embodiment, as shown inFIG.26, the shapes of the first guide614, the second holder62, and the guide member63are different from those in the seventeenth embodiment. Other than the above, the present embodiment is the same as the seventeenth embodiment.

A first guide614is made of metal instead of resin. Further, a second support620of a second holder62, a second guide622, and a third support626are made of resin instead of metal. Further, a third guide633and a guide member bottom635of the guide member63are made of metal instead of resin.

A pedal device1of the eighteenth embodiment is configured in a manner described above. The eighteenth embodiment also achieve the same effects as the seventeenth embodiment.

Nineteenth Embodiment

In the nineteenth embodiment, as shown inFIG.27, the shapes of the third guide633and the fourth guide654are different from those in the ninth embodiment. Other than the above, the nineteenth embodiment is the same as the ninth embodiment.

A third guide633is made of resin instead of metal. Further, the third guide633is formed in a cylindrical shape instead of having a columnar shape.

A fourth guide654is made of metal instead of resin. Further, the fourth guide654is formed in a columnar shape instead of having a cylindrical shape. Further, a part of the fourth guide654is inserted into a hole of the third guide633. Thereby, movement of the third guide633and the fourth guide654in the vehicle vertical direction Db is mutually restricted with each other. Further, since the third guide633and the fourth guide654extend in the vehicle longitudinal direction Da, an inner surface of the third guide633and an outer surface of the fourth guide654slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the nineteenth embodiment is configured in a manner described above. The nineteenth embodiment also achieves the same effects as the ninth embodiment.

Twentieth Embodiment

In the twentieth embodiment, as shown inFIG.28, the forms of the first guide614and the second guide622are different from the ninth embodiment. Other than the above, the twentieth embodiment is the same as the ninth embodiment.

A first guide614is made of metal instead of resin. Further, the first guide614is formed in a columnar shape instead of having a cylindrical shape.

A second guide622is made of resin instead of metal. Further, the second guide622is formed in a cylindrical shape instead of having a columnar shape. Further, a part of the first guide614is inserted into a hole of the second guide622. Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an outer surface of the first guide614and an inner surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the twentieth embodiment is configured in a manner described above. The twentieth embodiment also achieves the same effects as the ninth embodiment.

In the twenty-first embodiment, as shown inFIG.29, the shapes of the first guide614, the second guide622, and the third guide633are different from those in the twelfth embodiment. Other than the above, the present embodiment is the same as the twelfth embodiment.

A first guide614is made of metal instead of resin. Further, the first guide614is formed in a columnar shape instead of having a cylindrical shape.

A second guide622is arranged inside a first elastic member71. Further, a part of the first guide614is inserted into a hole of the second guide622. Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an outer surface of the first guide614and an inner surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

A third guide633is formed in a cylindrical shape instead of having a columnar shape. Further, a part of the third guide633is inserted into a hole of the fourth guide654. A part of the fourth guide654may be inserted into a hole of the third guide633.

Thereby, movement of the third guide633and the fourth guide654in the vehicle vertical direction Db is mutually restricted with each other. Further, since the third guide633and the fourth guide654extend in the vehicle longitudinal direction Da, an outer surface of the third guide633and an inner surface of the fourth guide654slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the twenty-first embodiment is configured in a manner described above. The twenty-first embodiment also achieves the same effects as the twelfth embodiment.

In the twenty-second embodiment, as shown inFIG.30, the shapes of the first guide614and the second guide622are different from those in the twenty-first embodiment. Other than the above, the twenty-second embodiment is the same as the twenty-first embodiment.

A first guide614is made of resin instead of metal. Further, the first guide614is formed in a cylindrical shape instead of having a columnar shape.

A second guide622is made of metal instead of resin. Further, the second guide622is formed in a columnar shape instead of having a cylindrical shape. Further, a part of the second guide622is inserted into a hole of the first guide614. Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an inner surface of the first guide614and an outer surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the twenty-second embodiment is configured in a manner described above. The twenty-second embodiment also achieves the same effects as the twenty-first embodiment.

In the twenty-third embodiment, as shown inFIG.31, the shapes of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from the twelfth embodiment. Other than the above, the present embodiment is the same as the twelfth embodiment.

A first guide614and a second guide622are arranged inside a first elastic member71.

A third guide633is made of resin instead of metal. Further, the third guide633is formed in a cylindrical shape instead of having a columnar shape.

A fourth guide654is made of metal instead of resin. Further, the fourth guide654is formed in a columnar shape instead of having a cylindrical shape. Further, a part of the fourth guide654is inserted into a hole of the third guide633. Thereby, movement of the third guide633and the fourth guide654in the vehicle vertical direction Db is mutually restricted with each other. Further, since the third guide633and the fourth guide654extend in the vehicle longitudinal direction Da, an inner surface of the third guide633and an outer surface of the fourth guide654slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the twenty-third embodiment is configured in a manner described above. The twenty-third embodiment also achieves the same effects as the twelfth embodiment.

In the twenty-fourth embodiment, as shown inFIG.32, the form of the third guide633is different from that in the twelfth embodiment. Other than the above, the present embodiment is the same as the twelfth embodiment.

A third guide633is formed in a cylindrical shape instead of having a columnar shape. Further, a part of the third guide633is inserted into a hole of the fourth guide654. A part of the fourth guide654may be inserted into a hole of the third guide633.

A pedal device1of the twenty-fourth embodiment is configured in a manner described above. The twenty-fourth embodiment also achieves the same effects as the twelfth embodiment.

In the twenty-fifth embodiment, as shown inFIG.33, the shapes of the first guide614and the second guide622are different from those in the twelfth embodiment. Other than the above, the present embodiment is the same as the twelfth embodiment.

Instead of a part of a second guide622being inserted into a hole of a first guide614, a part of the first guide614is inserted into a hole of the second guide622. Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an outer surface of the first guide614and an inner surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the twenty-fifth embodiment is configured in a manner described above. The twenty-fifth embodiment also achieves the same effects as the twelfth embodiment. (Twenty-sixth Embodiment)

In the twenty-sixth embodiment, as shown inFIG.34, the shapes of the first guide614and the second guide622are different from those in the twenty-fourth embodiment. Other than the above, the second embodiment is the same as the twenty-fourth embodiment.

Instead of a part of a second guide622being inserted into a hole of a first guide614, a part of the first guide614is inserted into a hole of the second guide622. Thereby, movement of the first guide614and the second guide622in the vehicle vertical direction Db is mutually restricted with each other. Further, since the first guide614and the second guide622extend in the vehicle longitudinal direction Da, an outer surface of the first guide614and an inner surface of the second guide622slide with each other in the vehicle longitudinal direction Da.

A pedal device1of the twenty-sixth embodiment is configured in a manner described above. The twenty-sixth embodiment also achieves the same effects as the twenty-fourth embodiment.

In the twenty-seventh embodiment, as shown inFIG.35, the shapes of the first guide614, the second guide622, and the third guide633are different from those in the first embodiment. The other configurations are the same as those of the first embodiment.

Here, assuming that a sliding portion between a first guide614and a second guide622is projected toward a sliding portion between the second guide622and a third guide633in the vehicle vertical direction Db. At such time, in the first embodiment, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the second guide622and the third guide633. Further, (a) when a pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver, the projected sliding portion between the first guide614and the second guide622overlaps the sliding portion between the second guide622and the third guide633. The sliding portion between the first guide614and the second guide622corresponds to a contact portion between the first guide614and the second guide622. Further, the sliding portion between the second guide622and the third guide633corresponds to a contact portion between the second guide622and the third guide633.

On the other hand, in the twenty-seventh embodiment, a sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db does not overlap a sliding portion between the second guide622and the third guide633. Further, (a) when the pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver, the projected sliding portion between the first guide614and the second guide622does not overlap the sliding portion between the second guide622and the third guide633.

A pedal device1of the twenty-seventh embodiment is configured in a manner described above. The twenty-seventh embodiment also achieves the same effects as the first embodiment. Further, the twenty-seventh embodiment also achieves the effects described below.

[3] Also, here, assuming that the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the second guide622and the third guide633. At such time, assuming further that the sliding portion of the second guide622is deformed due to (a) a force from outside of the pedal device1or (b) the environment in which the pedal device1is used, which has caused water absorption, expansion, contraction, and the like of the second guide622, thereby changing dimensions of the sliding portion of the second guide622. In such a situation, it may be a case that the sliding portion between the inner surface of the first guide614and the outer surface of the second guide622is deformed, and the sliding portion between the inner surface of the second guide622and the outer surface of the third guide633is deformed. Therefore, the inner surface of the first guide614and the outer surface of the second guide622do not slide in the vehicle longitudinal direction Da, and the inner surface of the second guide622and the outer surface of the third guide633do not slide in the vehicle longitudinal direction Da.

On the other hand, in the twenty-seventh embodiment, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db does not overlap the sliding portion between the second guide622and the third guide633, but separates therefrom.

Thereby, even when the sliding portion between the inner surface of the first guide614and the outer surface of the second guide622is deformed due to the force, water absorption, expansion, contraction, or the like, deformation of the sliding portion between the inner surface of the second guide622and the outer surface of the guide633can be suppressed. Further, even when the sliding portion between the inner surface of the second guide622and the outer surface of the third guide633is deformed due to the force, water absorption, expansion, contraction, or the like, deformation of the sliding portion between the inner surface of the first guide614and the outer surface of the second guide622can be suppressed. Therefore, even when one of the two sliding portions is fixed, the other sliding portion slides. Therefore, non-transmission of the restoring forces of the first elastic member71and the second elastic member72to the pedal10can be suppressed. Therefore, no returning of the pedal10to its original position can be suppressed.

In the twenty-eighth embodiment, as shown inFIG.36, the second support620, the third support626, the first guide614, the second guide622, and the third guide633are different from those in the fifth embodiment. The other configuration other than the above is the same as that of the fifth embodiment.

A second support620and a third support626are integrated to have one body, and have a bottom and a side part. The bottom of the second support620and the third support626is formed in a plate shape extending in the vehicle vertical direction Db. The side part of the second support620and the third support626is formed in a cylindrical shape extending in the vehicle rear direction from the above-described bottom.

Here, assuming that a sliding portion between the first guide614and the second guide622is projected toward a sliding portion between (a) the second support620and the third support626and (b) the third guide633in the vehicle vertical direction Db. At such time, in the fifth embodiment, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db does not overlap the sliding portion between (a) the second support620and the third support626and (b) the third guide633. Further, when a pedal part12is not stepped on by the driver, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db does not overlap the sliding portion between (a) the second support620and the third support626and (b) the third guide633. Further, even when the pedal part12is stepped on by the driver, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db does not overlap the sliding portion between (a) the second support620and the third support626and (b) the third guide633. The sliding portion between (a) the second support620and the third support626and (b) the third guide633corresponds to a contact portion between (c) the second support620and the third support626and (d) the third guide633.

On the other hand, in the twenty-eighth embodiment, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between (a) the second support620and the third support626and (b) the third guide633. Further, when the pedal part12is not stepped on by the driver, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between (a) the second support620and the third support626and (b) the third guide633. Further, even when the pedal part12is stepped on by the driver, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between (a) the second support620and the third support626and (b) the third guide633.

A pedal device1of the twenty-eighth embodiment is configured in a manner described above. The twenty-eighth embodiment also achieves the same effects as the fifth embodiment. Further, the twenty-eighth embodiment also achieves the effects described below.

[4] Assuming that the sliding portion between the first guide614and the second guide622is projected in the vehicle vertical direction Db toward the sliding portion between (a) the second support620and the third support626and (b) the third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between (a) the second support620and the third support626and (b) the third guide633.

Thereby, compared to an above-described non-overlap case, in which the projected sliding portions between the first guide614and the second guide622does not overlap the sliding portion between (a) the second support620and the third support626and (b) the third guide633, the volume of a reaction force generation mechanism60in the vehicle longitudinal direction Da can be reduced. Therefore, the increase in the volume of a pedal device1can be suppressed.

In the twenty-ninth embodiment, as shown inFIG.37, the shapes of the first guide614and the second guide622are different from those in the sixth embodiment. Other than the above, the present embodiment is the same as the sixth embodiment.

Here, assuming that a sliding portion between a first guide614and a second guide622is projected in the vehicle vertical direction Db toward a sliding portion between (a) a second support620and a third support626and (b) third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between (a) the second support620and the third support626and (b) the third guide633. Further, these sliding portions overlap (a) when a pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver.

A pedal device1of the twenty-ninth embodiment is configured in a manner described above. The twenty-ninth embodiment also achieves the same effects as the sixth embodiment. Further, the twenty-ninth embodiment also achieves the effect described in the item [4] described above.

Thirtieth Embodiment

In the thirtieth embodiment, as shown inFIG.38, the forms of the second support620, the third support626, the first guide614, the second guide622, and the third guide633are different from those in the seventh embodiment. different. The other configuration is the same as that of the seventh embodiment.

Lengths of a second support620and a third support626in the vehicle longitudinal direction Da are longer than those of the seventh embodiment. Further, assuming that a sliding portion between a first guide614and a second guide622is projected in the vehicle vertical direction Db toward a sliding portion between (a) the second support620and the third support626and (b) the third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db does not overlap the sliding portion between (a) the second support620and the third support626and (b) the third guide633. Further, when a pedal part12is not stepped on by the driver or even when the pedal part12is stepped on by the driver, these sliding portions do not overlap.

A pedal device1of the thirtieth embodiment is configured in a manner described above. The thirtieth embodiment also achieves the same effects as the seventh embodiment. Further, the thirtieth embodiment also achieves the effects described in the item [3] described above.

In the thirty-first embodiment, as shown inFIG.39, the shapes of the first guide614, the second guide622, and the third guide633are different from those in the eighth embodiment. The other configuration is the same as that of the eighth embodiment.

A length of a first guide614in the vehicle longitudinal direction Da is shorter than that in the eighth embodiment. Further, a length of a second guide622in the vehicle longitudinal direction Da is longer than that of the eighth embodiment. Also, it is assumed that a sliding portion between the first guide614and the second guide622is projected in the vehicle vertical direction Db toward a sliding portion between the second guide622and a third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db does not overlap the sliding portion between the second guide622and the third guide633. Further, when a pedal part12is not stepped on by the driver or even when the pedal part12is stepped on by the driver, these sliding portions do not overlap.

A pedal device1of the thirty-first embodiment is configured in a manner described above. The thirty-first embodiment also achieves the same effects as the eighth embodiment. Further, the thirty-first embodiment also achieves the effects in the item [3] described above.

In the thirty-second embodiment, as shown inFIG.40, the shapes of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from the twelfth embodiment. Other than the above, the present embodiment is the same as the twelfth embodiment.

A fourth guide654, instead of extending from a boundary with a second support620and a third support626in the vehicle front direction, extends from the boundary with the second support620and the third support626in the vehicle rear direction. Also, it is assumed that a sliding portion between a first guide614and a second guide622is projected in the vehicle vertical direction Db toward a sliding portion between the fourth guide654and a third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the fourth guide654and the third guide633. Further, when a pedal part12is not stepped on by the driver or even when the pedal part12is stepped on by the driver, the projected sliding portion between the first guide614and the second guide622overlaps the sliding portion between the fourth guide654and the third guide633. The sliding portion between the fourth guide654and the third guide633corresponds to a contact portion between the fourth guide654and the third guide633.

A pedal device1of the thirty-second embodiment is configured in a manner described above. The thirty-second embodiment also achieves the same effects as the twelfth embodiment. Further, the thirty-second embodiment also achieves the effect in the item [4] described above.

In the thirty-third embodiment, as shown inFIG.41, the shapes of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from those in the twenty-first embodiment. Other than the above, the thirty-third embodiment is the same as the twenty-first embodiment.

A fourth guide654, instead of extending from a boundary with a second support620and a third support626in the vehicle front direction, extends from the boundary with the second support620and the third support626in the vehicle rear direction. Further, instead of an outer surface of a third guide633and an inner surface of the fourth guide654sliding with each other in the vehicle longitudinal direction Da, an inner surface of the third guide633and an outer surface of the fourth guide654slide with each other. Further, assuming that a sliding portion between a first guide614and a second guide622is projected in the vehicle vertical direction Db toward a sliding portion between the fourth guide654and the third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the fourth guide654and the third guide633. Further, these sliding portions overlap (a) when a pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver.

A pedal device1of the thirty-third embodiment is configured in a manner described above. The thirty-third embodiment also achieves the same effects as the twenty-first embodiment. Further, the thirty-third embodiment also achieves the effect in the item [4] described above.

In the thirty-fourth embodiment, as shown inFIG.42, the shapes of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from those in the twenty-second embodiment. Other than the above, the present embodiment is the same as the twenty-second embodiment.

A fourth guide654, instead of extending from a boundary with a second support620and a third support626in the vehicle front direction, extends from the boundary with the second support620and the third support626in the vehicle rear direction. Further, instead of an outer surface of a third guide633and an inner surface of the fourth guide654sliding with each other in the vehicle longitudinal direction Da, an inner surface of the third guide633and an outer surface of the fourth guide654slide with each other. Further, assuming that a sliding portion between a first guide614and a second guide622is projected in the vehicle vertical direction Db toward a sliding portion between the fourth guide654and the third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the fourth guide654and the third guide633. Further, these sliding portions overlap (a) when a pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver.

A pedal device1of the thirty-fourth embodiment is configured in a manner described above. The thirty-fourth embodiment also achieves the same effects as the twenty-second embodiment. Further, the thirty-fourth embodiment also achieves the effect in the item [4] described above.

In the thirty-fifth embodiment, as shown inFIG.43, the forms of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from those in the twenty-third embodiment. Other than the above, the present embodiment is the same as the twenty-third embodiment.

A second guide622extends, instead of extending from a boundary between a second support620and a third support626in the vehicle rear direction, extends from a boundary between the second support620and a third support626in the vehicle front direction. Also, it is assumed that a sliding portion between a first guide614and the second guide622is projected in the vehicle vertical direction Db toward a sliding portion between a fourth guide654and a third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the fourth guide654and the third guide633. Further, these sliding portions overlap (a) when a pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver.

A pedal device1of the thirty-fifth embodiment is configured in a manner described above. The thirty-fifth embodiment also achieves the same effects as the twenty-third embodiment. Further, the thirty-fifth embodiment also achieves the effect in the item [4] described above.

In the thirty-sixth embodiment, as shown inFIG.44, the shapes of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from those in the twenty-fourth embodiment. Other than the above, the present embodiment is the same as the twenty-fourth embodiment.

A fourth guide654, instead of extending from a boundary with a second support620and a third support626in the vehicle front direction, extends from the boundary with the second support620and the third support626in the vehicle rear direction. Also, it is assumed that a sliding portion between a first guide614and a second guide622is projected in the vehicle vertical direction Db toward a sliding portion between a fourth guide654and a third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the fourth guide654and the third guide633. Further, these sliding portions overlap (a) when a pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver. In the thirty-sixth embodiment, an outer surface of the third guide633and an inner surface of the fourth guide654slide in the vehicle longitudinal direction Da, but the present disclosure is not limited thereto. For example, an inner surface of the third guide633and an outer surface of the fourth guide654may slide.

A pedal device1of the thirty-sixth embodiment is configured in a manner described above. The thirty-sixth embodiment also achieves the same effects as the twenty-fourth embodiment. Further, the thirty-sixth embodiment also achieves the effect in the item [4] described above.

In the thirty-seventh embodiment, as shown inFIG.45, the shapes of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from the twenty-fifth embodiment. Other than the above, the present embodiment is the same as the twenty-fifth embodiment.

A fourth guide654, instead of extending from a boundary with a second support620and a third support626in the vehicle front direction, extends from the boundary with the second support620and the third support626in the vehicle rear direction. Also, it is assumed that a sliding portion between a first guide614and a second guide622is projected in the vehicle vertical direction Db toward a sliding portion between a fourth guide654and a third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the fourth guide654and the third guide633. Further, these sliding portions overlap (a) when a pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver.

A pedal device1of the thirty-seventh embodiment is configured in a manner described above. The thirty-seventh embodiment also achieves the same effects as the twenty-fifth embodiment. Further, the thirty-seventh embodiment also achieves the effect in the item [4] described above.

In the thirty-eighth embodiment, as shown inFIG.46, the forms of the second support620, the third support626, and the second elastic member72are different from those in the thirty-seventh embodiment. Other than the above, the present embodiment is the same as the thirty-seventh embodiment.

A third support626is connected to one side of a second guide622opposite to a second support620, and is therefore disposed on the vehicle rear side with respect to the second support620. Further, the third support626extends in the vehicle vertical direction Db from a part of the second guide622opposite to the second support620, and is formed in an annular shape.

A second elastic member72is supported by a housing cylinder44and the third support626, instead of being supported by a guide member bottom635, the second support620, and the third support626.

A pedal device1of the thirty-eighth embodiment is configured in a manner described above. The thirty-eighth embodiment also achieves the same effects as the thirty-seventh embodiment.

In the thirty-ninth embodiment, as shown inFIG.47, the shapes of the first guide614, the second guide622, the third guide633, and the fourth guide654are different from the twenty-sixth embodiment. Other than the above, the present embodiment is the same as the twenty-sixth embodiment.

A fourth guide654, instead of extending from a boundary with a second support620and a third support626in the vehicle front direction, extends from the boundary with the second support620and the third support626in the vehicle rear direction. Also, it is assumed that a sliding portion between a first guide614and a second guide622is projected in the vehicle vertical direction Db toward a sliding portion between a fourth guide654and a third guide633. At such time, the sliding portion between the first guide614and the second guide622projected in the vehicle vertical direction Db overlaps the sliding portion between the fourth guide654and the third guide633. Further, these sliding portions overlap (a) when a pedal part12is not stepped on by the driver or (b) even when the pedal part12is stepped on by the driver.

A pedal device1of the thirty-ninth embodiment is configured in a manner described above. The thirty-ninth embodiment also achieves the same effects as the twenty-sixth embodiment. Further, the thirty-ninth embodiment also achieves the effect in the item [4] described above.

In the fortieth embodiment, as shown inFIG.48, the form of the second holder62is different from that in the ninth embodiment. Other than the above, the present embodiment is the same as the ninth embodiment.

Specifically, instead of forming a second guide622with metal, a second support620, a third support626, the second guide622and a fourth guide654of a second holder62are integrally molded with resin.

A pedal device1of the fortieth embodiment is configured in a manner described above. The fortieth embodiment also achieves the same effects as the ninth embodiment.

Other Embodiments

The present disclosure is not limited to the above-described embodiments, i.e., is appropriately modifiable with respect to the above-described embodiments. Further, individual elements or features of a particular embodiment are not necessarily essential unless it is specifically stated that the elements or the features are essential in the foregoing description, or unless the elements or the features are obviously essential in principle.

In each of the embodiments described above, the pedal device1is used as a brake pedal in a brake-by-wire system150that controls the brakes of a vehicle. On the other hand, a pedal device1is not limited to bee used as the brake pedal. The pedal device1may be used, for example, as an accelerator pedal for accelerating a vehicle.

In each of the embodiments described above, the reaction force is generated by the restoring force generated when the first elastic member71, the second elastic member72, and the third elastic member73are compressed, but the present disclosure is not limited thereto in a situation described above. For example, by changing the arrangement of a reaction force generation mechanism60, a reaction force may be generated by a restoring force generated when a first elastic member71, a second elastic member72, and a third elastic member73are pulled. Further, the coil springs of the first elastic member71, the second elastic member72, and the third elastic member73are coil springs at equal intervals, but the coil springs are not limited thereto, and may be a conical coil spring, a coil spring at unequal intervals, and the like.

In each of the embodiments described above, the pedal device1is a hanging type device, but is not limited thereto, and may be an organ type device. In case of using the organ type device, as the driver's pedaling force applied to the pedal10increases, a part of a pedal10on the vehicle front side relative to the rotation axis O rotates toward a dash panel200.

In each of the embodiments described above, in the brake-by-wire system150, hydraulic pressure is generated in the brake fluid flowing through a brake circuit120by a master cylinder126. On the other hand, the present disclosure is not limited to the generation of hydraulic pressure in the brake fluid flowing through the brake circuit120by the master cylinder126. For example, hydraulic pressure may be generated in a brake fluid flowing through the brake circuit120by a hydraulic pump.

In the first embodiment described above, the third guide633is formed in a columnar shape. On the other hand, a third guide633may be formed in a cylindrical shape. In such case, the third guide633may slide on a holder cylinder624or may slide on a third support626. Further, the first guide614, sliding on the second guide622in the first embodiment, may also slide on the holder cylinder624or the third support626.

The individual embodiments described above may also be combined with each other as appropriate.

Various Aspects of The Present Disclosure

A pedal device includes: a pedal (10) configured to rotate about a rotation axis (O) in accordance with a pedaling operation of an operator; a first elastic member (71) configured to be deformed by a pedaling force from the pedal as the pedal rotates, and to generate a reaction force against the pedaling force of the operator; a second elastic member (72) configured to be deformed by a pedaling force from the pedal as the pedal rotates, and to generate a reaction force against the pedaling force of the operator; a first holder (61) including a first support (610) that is arranged adjacent to the pedal and supports one end of the first elastic member, and a first guide (614) that extends from the first support in a deformation direction of the first elastic member; a second holder (62) including a second support (620) that supports an another end of the first elastic member, a second guide (622) that extends in the deformation direction of the first elastic member, and a third support (626) that supports one end of the second elastic member; a fourth support (44,635) supporting an another end of the second elastic member; and a third guide (633) extending from the fourth support in a deformation direction of the second elastic member. In the pedal device, the first guide moves in the deformation direction of the first elastic member relative to the second guide and slides with the second guide in the deformation direction of the first elastic member, to deform the first elastic member, in accordance with the pedaling force from the pedal as the pedal rotates. The second holder moves in the deformation direction of the second elastic member relative to the third guide, and slides with the third guide in the deformation direction of the second elastic member, to deform the second elastic member, in accordance with the pedaling force from the pedal as the pedal rotates. In addition, the first guide and the second guide are disposed to be restricted with each other in a movement on a direction perpendicular to the deformation direction of the first elastic member, and the second holder and the third guide are disposed to be restricted with each other in a movement on a direction perpendicular to the deformation direction of the second elastic member.

In the pedal device of aspect 1, the first guide and the second guide slide in the deformation direction of the first elastic member when the second holder and the third guide are fixed, and the second holder and the third guide slide in the deformation direction of the second elastic member when the first guide and the second guide are fixed.

In the pedal device of aspect 1 or 2, the first guide is formed in a cylindrical shape, the second guide is formed in a cylindrical shape, and the third guide is formed in a columnar shape.

In the pedal device of aspect 1 or 2, the first guide is formed in a cylindrical shape, the second guide is formed in a columnar shape, and the third guide is formed in a cylindrical shape.

In the pedal device of aspect 1 or 2, the first guide is formed in a columnar shape, the second guide is formed in a cylindrical shape, and the third guide is formed in a cylindrical shape.

In the pedal device of aspect 1 or 2, the first guide is formed in a columnar shape, the second guide is formed in a cylindrical shape, and the third guide is formed in a columnar shape.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a cylindrical shape, the second guide is formed in a columnar shape, the fourth guide is formed in a cylindrical shape, and the third guide is formed in a columnar shape, and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a columnar shape, the second guide is formed in a cylindrical shape, the fourth guide is formed in a columnar shape, and the third guide is formed in a cylindrical shape and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a cylindrical shape, the second guide is formed in a cylindrical shape, the fourth guide is formed in a cylindrical shape, and the third guide is formed in a columnar shape, and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a cylindrical shape, the second guide is formed in a columnar shape, the fourth guide is formed in a columnar shape, and the third guide is formed in a cylindrical shape and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a columnar shape, the second guide is formed in a cylindrical shape, the fourth guide is formed in a cylindrical shape, and the third guide is formed in a columnar shape and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a columnar shape, the second guide is formed in a cylindrical shape, the fourth guide is formed in a cylindrical shape, and the third guide is formed in a cylindrical shape and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a cylindrical shape, the second guide is formed in a columnar shape, the fourth guide is formed in a cylindrical shape, and the third guide is formed in a cylindrical shape and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a cylindrical shape, the second guide is formed in a cylindrical shape, the fourth guide is formed in a columnar shape, and the third guide is formed in a cylindrical shape and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the first guide is formed in a cylindrical shape, the second guide is formed in a cylindrical shape, the third guide is formed in a cylindrical shape, and the third guide slides with the second guide in the deformation direction of the second elastic member.

In the pedal device of aspect 1 or 2, the second holder further includes a fourth guide (654) extending in the deformation direction of the second elastic member, the first guide is formed in a cylindrical shape, the second guide is formed in a cylindrical shape, the fourth guide is formed in a cylindrical shape, and the third guide is formed in a cylindrical shape and slides with the fourth guide in the deformation direction of the second elastic member.

In the pedal device of any one of aspects 1 to 16, the first elastic member and the second elastic member are deformed respectively when the pedal is not stepped on by the operator.

In the pedal device of any one of aspects 1 to 17, the deformation direction of the first elastic member and the deformation direction of the second elastic member are linear directions perpendicular to the rotation axis.

In the pedal device of any one of aspects 1 to 17, the deformation direction of the first elastic member and the deformation direction of the second elastic member are respectively a rotation direction about an axis extending in the direction of the rotation axis.

In the pedal device of any one of aspects 1 to 19, when the second elastic member is projected in a direction perpendicular to the deformation direction of the second elastic member, the projected second elastic member and the first elastic member overlap with each other.

In the pedal device of aspect 3 or 15, when a sliding portion between the first guide and the second guide is projected in a direction perpendicular to the deformation direction of the first elastic member, the projected sliding portion between the first guide and the second guide does not overlap the sliding portion between the second holder and the third guide, and is separate therefrom.

In the pedal device of aspect 4 or 5, when the sliding portion between the first guide and the second guide is projected in a direction perpendicular to the deformation direction of the first elastic member, the projected sliding portion between the first guide and the second guide overlaps with the sliding portion between the second holder and the third guide.

In the pedal device of any one of aspects 9, 12, 13, 14, and 16, when the sliding portion between the first guide and the second guide is projected in a direction perpendicular to the deformation direction of the first elastic member, the projected sliding portion between the first guide and the second guide overlaps with the sliding portion between the fourth guide and the third guide.