Source: https://patents.google.com/patent/JP2009045963A/en
Timestamp: 2019-12-13 06:00:43
Document Index: 96564175

Matched Legal Cases: ['art 20', 'art 2', 'art 2', 'art 20', 'art 147', 'art 140', 'art 3', 'art 10', 'art 41', 'art 42', 'art 43']

JP2009045963A - Safety ensuring device for occupant - Google Patents
Safety ensuring device for occupant Download PDF
2007-08-14 Priority to JP2007211202A priority Critical patent/JP2009045963A/en
2009-03-05 Publication of JP2009045963A publication Critical patent/JP2009045963A/en
PROBLEM TO BE SOLVED: To provide an occupant safety ensuring device for preventing a submarine phenomenon.
SOLUTION: A movable part 20 which is arranged on a seating part 2 of a seat 1 and can project the seating part 2 partially upward, and a drive which is housed inside the seat 1 and moves the movable part 20 Has a part. The drive unit receives an electrical signal from a pre-crash sensor mounted on the vehicle and a control unit connected to the sensor, and moves the movable unit 20 upward by an electric drive unit (a combination of a motor and a gear, etc.). To prevent submarine phenomenon.
The present invention relates to an occupant safety ensuring device for protecting an occupant when an occupant wearing a seat bell receives an impact associated with a collision or rapid deceleration during traveling of a vehicle.
If an impact occurs due to a collision while driving the vehicle, the occupant slips forward by slipping through the seat belt depending on the occupant's sitting posture (when sitting in the seat shallowly or when the seat back is tilted down). As a result, the restraint by the seat belt is released or lowered, and as a result, a phenomenon that the passenger is not sufficiently protected (generally referred to as “submarine phenomenon”) may occur.
Patent Document 1 discloses a technique for preventing such a submarine phenomenon using a gas generator as a power source.
JP 2000-272446 A
Since the invention of Patent Document 1 uses a gas generator as a power source, it is excellent in terms of quickness, but cannot be reused by only one use. Therefore, if the submarine phenomenon occurs as a result of rapid deceleration even before a collision occurs, the operation cannot be performed during the subsequent collision. Further, if it is operated only at the time of a collision and is not operated at the time of rapid deceleration even if it does not lead to a collision, it cannot be said that it is sufficient in terms of occupant protection.
An object of the present invention is to provide an occupant safety ensuring device that can be quickly and repeatedly activated in principle so as to suppress the submarine phenomenon.
The invention of claim 1 is a solution to the problem.
In order to ensure the safety of the occupant when the restraint ability of the occupant by the seat belt is reduced by applying an impact caused by a collision or rapid deceleration to the occupant wearing the seat belt when the vehicle is traveling Equipment,
A movable part that is arranged in a seating part of the vehicle seat and can move the seating part up and down;
A drive unit that is housed in a vehicle seat and capable of moving the movable unit up and down;
The drive unit receives an electrical signal from a sensor mounted on a vehicle and a control unit connected to the sensor, and moves the movable unit up and down by an electrical drive unit.
An occupant safety ensuring device comprising at least a pre-crash sensor as the sensor is provided.
The occupant safety ensuring device of the present invention is capable of restraining the occupant by a seat belt by moving the seat seating part or all of the seat up and down by an electric drive means before a collision or when sudden deceleration occurs. This is to maintain the passenger's protection performance by preventing the deterioration of the vehicle. As used herein, moving the entire seating part up and down means tilting the whole so that the front of the seating part is higher and the rear is lower, and partially moving the seating part up and down is the seating part. A part of the seating section (preferably a part before the central part in the length direction of the seating part) is projected upward, and a part of the seating part (preferably a part after the central part in the length direction of the seating part) is Recessed down, or a combination of both.
As the electric drive means used in the present invention, those using a combination of a motor and one or more gears or cams, those using a solenoid, those using a motor and a lever, belt, chain, etc. Can be mentioned.
Since the occupant safety ensuring device according to the present invention uses electricity as a power source, unlike the invention using the gas generator as the power source as in the invention of Patent Document 1, in principle (that is, the vehicle by collision) It can be activated any number of times (unless it becomes unusable itself).
On the other hand, the occupant safety ensuring device of the present invention uses electricity as a power source, and therefore is inferior in terms of speed compared to a device using a gas generator as a power source. However, this point is solved by combining with a pre-crash sensor (proximity sensor) and a control unit.
That is, in the invention of Patent Document 1, the device is operated after the vehicle collides, but the device of the present invention uses the pre-crash sensor to abnormally approach obstacles such as other vehicles, buildings, block fences, and power poles. Is detected, and the apparatus is operated at a stage before the vehicle collides in accordance with an instruction from the control unit receiving the information. In this way, occupant protection performance is enhanced by compensating for speed.
In addition, in the device of the present invention, by combining with a sensor other than the pre-crash sensor, it is possible to suppress the submarine phenomenon in response to a sudden deceleration caused by an occupant suddenly braking even before a collision occurs. It is superior to the invention of Document 1. Other sensors are sensors that detect abnormal running of the vehicle. For example, in addition to sensors that detect speed changes due to rapid deceleration, sensors that detect changes in the riding posture of passengers due to sudden changes in direction, and the like. Mention may be made of sensors.
According to a second aspect of the present invention, as another means for solving the problem, an occupant in which the movable portion is provided at a front end portion of a seating portion of a vehicle seat and an impact caused by a collision or rapid deceleration is acting on the seat belt. The occupant safety ensuring device according to claim 1, wherein the occupant safety securing device according to claim 1 protrudes upward when added to the front end side.
By projecting the front end portion of the seating portion upward, the submarine phenomenon is suppressed and the occupant is prevented from slipping through the seat belt.
According to a third aspect of the present invention, as another means for solving the problem, the movable portion is provided at a rear end portion of a seating portion of the vehicle seat, and an impact caused by a collision or rapid deceleration is applied to the seat belt. The occupant safety ensuring device according to claim 1, wherein when applied to the occupant, the rear end side is recessed downward.
By denting the rear end of the seating portion downward, the submarine phenomenon is suppressed and the occupant is prevented from slipping through the seat belt.
According to a fourth aspect of the present invention, as another means for solving the problem, as the sensor, in addition to a pre-crash sensor for detecting that the vehicle is suddenly approaching a collision object when the vehicle is traveling, the vehicle traveling An occupant safety ensuring device according to any one of claims 1 to 3, further comprising an acceleration sensor or a deceleration sensor for sensing a sudden deceleration when sudden braking is applied.
By combining with various sensors, it is possible to suppress the submarine phenomenon caused by causes other than the collision and enhance the passenger protection performance.
Since the passenger safety ensuring device of the present invention is driven by electrical means, it can be used repeatedly in principle.
(1) FIG. 1 and FIG. 2 occupant safety ensuring device FIG. 1 is a perspective view of a seat provided with a safety ensuring device according to an embodiment of the present invention. ) Is removed so that the inside can be seen (however, the internal structure is partially omitted). 2A is a partial cross-sectional view in the vertical direction of FIG. 1 (before operation), and FIG. 2B is a diagram illustrating the operation after operation of FIG. 2A.
The seat 1 has a seating portion 2 and a backrest portion 3, and an occupant safety ensuring device is installed in the seating portion 2.
Inside the seating portion 2, two side frames 10 and 20 and one rear frame 30 are installed, each of which is formed of four frame members.
The frame 10 includes four frame members 11 to 14, and the opposing frame 20 includes four frame members 21 to 24. The frame material 13 and the frame material 23 are also used as the frame material of the frame 30 on the rear side.
The movable portion 40 includes a main body portion 41 at a position facing the seating surface of the occupant, an attachment portion 42 formed on one end side of the main body portion 41, and a rod-shaped on / off means extending downward from the attachment portion 42. 43. The movable portion 40 is rotatably attached to the distal end portion of the frame member 14 with a pin 44 in the attachment portion 42. Both end sides of the main body 41 are supported in contact with the upper ends of the frame members 11 and 21, respectively. Although not shown in FIG. 2, the opposite side of the movable portion 40 in the width direction (width direction of the seating portion 2) has a similar attachment structure, and is attached rotatably at the front end portion of the frame member 24. .
The drive unit includes a rack 51 and a pinion 54 disposed so as to mesh with the teeth of the rack 51. The rack 51 is fixed to the main body portion 41 of the movable portion 40 with bolts 52, and is supported by the retainer 53 so as to be pressed against the pinion 54 side. The pinion 54 is connected to the electric motor 55. The electric motor 55 is connected to a power source (vehicle battery) and a control unit (not shown).
Although not shown in FIG. 2, a similar combination of a rack and a pinion (a drive unit is a combination of a rack and a pinion) is attached to the side opposite to the seating portion 2 in the width direction. . Note that only one combination of a rack and a pinion can be used as the drive unit. In that case, it is desirable to install a combination of the rack and the pinion at the center in the width direction of the main body 41 of the movable unit 40.
The drive unit may use different electric motors on the side opposite to the side shown in FIG. 2 in the width direction, or in addition to the rack and pinion, other various gears (for example, a worm and a worm wheel that matches it). A combination of worm gears) may be combined.
A switch frame 60 is attached to the frame material 12, and an on switch 61 and an off switch 62 are attached to the switch frame 60. As shown in FIG. 2A, the tip of the on / off means 43 of the movable portion 40 is in contact with the on / off switch 61 before the operation. In addition to the side shown in FIG. 2, the switch may be provided on the opposite side, but only on one side.
Next, the operation when the occupant safety ensuring device of the present invention is mounted on a vehicle will be described with reference to FIGS. The vehicle has a pre-crash sensor (proximity sensor) and an acceleration sensor, and further has a control unit.
When the vehicle is running, when an obstacle such as another vehicle is abnormally approached, a signal from the pre-crash sensor that detects the obstacle is transmitted to the control unit. In the control unit, when the signal is processed and recognized as necessary, the occupant safety ensuring device of the present invention is operated at the stage before the collision with the obstacle.
As shown in FIGS. 1 and 2A, before the operation, the tip of the main body 41 is in contact with the upper ends of the frame material 11 and the frame material 21, and the on / off means 43 is connected to the on / off switch 61. Is in contact with.
Then, as shown in FIG. 2 (b), the operating current from the control unit is received, the electric motor 55 is operated to rotate, the pinion 54 is rotated, the rotation of the pinion 54 is received, and the rack 51 is moved upward. Move to. The main body 41 is pushed up while rotating around the pin 44. At this time, since the cover 2a covering the seat portion 2 has good stretchability, the rotational movement of the main body portion 41 is not hindered.
When the rack 51 moves upward to a predetermined position, the on / off means 43 comes into contact with the off switch 62, the current supply to the electric motor 55 is cut off, and the electric motor 55 is stopped.
As a result of such an operation, the seating portion 2 is in a state as shown in FIG. 2B, so that the occurrence of a submarine phenomenon is prevented. Since the occupant protection device of the present invention is activated by the pre-crash sensor before the vehicle collides, even if the vehicle subsequently collides, sufficient occupant protection can be achieved.
Further, the occupant protection device of the present invention can also prevent the occurrence of a submarine phenomenon by performing the same operation as described above even during sudden deceleration accompanying sudden braking by using an acceleration sensor. . In addition, together with the occupant protection device of the present invention, a known seat belt retractor 71 (for example, Japanese Patent Application Laid-Open No. 2004-34887) is operated, and the occupant is restrained by the seat belt 70, thereby further improving the occupant protection performance. It is done.
When the vehicle can travel normally after the state shown in FIG. 2B, the electric motor 55 rotates in the reverse direction to return to the state shown in FIG. 2A to prepare for the next collision or deceleration. Can do.
(2) Occupant Safety Securing Device in FIG. 3 An occupant safety ensuring device according to an embodiment different from FIG. FIG. 3A is a longitudinal sectional view (before operation) of a seat provided with an occupant safety ensuring device, and FIG. 3B is a diagram illustrating a state after the operation of FIG. 3A. is there. In FIG. 3, only one surface side is shown, but the opposite side in the width direction has the same structure. FIG. 4 is a perspective view of the movable portion 140 shown in FIG.
Three frames (one frame is composed of four frame members as in FIG. 1) are arranged inside the seating portion 2, but unlike the frame structure shown in FIG. A frame corresponding to the frame 30 shown in FIG.
In FIG. 3, a frame material 111 corresponding to the frame material 11 shown in FIG. 1, a frame material 112 corresponding to the frame material 12, a frame material 113 corresponding to the frame material 13, and a frame material 114 corresponding to the frame material 14 are shown. ing.
As shown in FIG. 4, the movable portion 140 includes a first inclined forming plate 140 a and a second inclined plate that are arranged on both ends in the width direction of the seating portion 2 and are made of a metal plate whose middle portion is bent substantially at a right angle. It has the formation board 140b and the seating support part 147 spanned between them.
As shown in FIG. 3, the movable portion 140 is rotatably connected to the attachment portion 101 of the frame material 114 by the pin 102 on the one end portion 141 side of the first inclination forming plate 140a. The second inclined forming plate 140b is also attached to the frame material in the same manner on the one end 144 side.
A control hole 143 for controlling the tilt state of the first tilt forming plate 140a is formed on the other end 142 side of the first tilt forming plate 140a, and the other end 145 side of the second tilt forming plate 140b. Is formed with a control hole 146 for controlling the inclination state of the second inclination forming plate 140b.
The peripheral surface of the other end portion 142 of the movable portion 140 is in contact with the peripheral surface of the first stopper member 155 made of a semicircular plate material provided on the frame material 112. A second stopper member 156 made of a semicircular plate material is further provided on the frame material 112 at a predetermined interval from the first stopper member 155.
The thickness of the movable portion 140 on the other end 142 side is the same as the thickness of the first stopper member 155 and the second stopper member 156, or the thickness of the first stopper member 155 and the second stopper member 156 is larger. It is set to be. In addition, a groove is formed on the circumferential surface of the first stopper member 155 that contacts the other end 142 so that the other end 142 can enter, and the other end 142 is movably fitted into the groove. It may be.
As shown in FIG. 3B, the distance between the first stopper member 155 and the second stopper member 156 and the height from each frame member 112 are such that the other end 142 is at the first stopper member 155 and the second stopper member 156. It is set so that it can be fitted between.
The drive unit includes a rack 150, a pinion 161 disposed so as to mesh with the teeth of the rack 150, and a gear 162, a gear 163, and a gear 164 sequentially meshed with the pinion 161. Connected to an electric motor not shown. The electric motor is connected to a power source (vehicle battery) and a control unit (not shown).
The rack 150 has a fixed pin 151 protruding from the surface on one end side, and the fixed pin 151 is fitted in the control hole 143 of the first inclination forming plate 140a. Since the top surface of the fixing pin 151 protrudes from the control hole 143, the fixing pin 151 does not come off from the control hole 143. The diameter of the fixing pin 151 is slightly smaller than the width of the control hole 143.
The drive unit may use different electric motors on the side shown in FIG. 3 and the width direction opposite side of the seating unit 2, or may combine various other gears, cams, etc. other than those shown in the figure.
Next, the operation when the occupant safety ensuring device of the present invention is mounted on a vehicle will be described with reference to FIG. The vehicle has a pre-crash sensor (proximity sensor) and an acceleration sensor, and further has a control unit.
When the vehicle is running, when an obstacle such as another vehicle is abnormally approached, a signal from the pre-crash sensor that detects the obstacle is transmitted to the control unit. And when the control unit processes the signal and recognizes that it is necessary, it activates the occupant safety ensuring device of the present invention before the collision.
As shown in FIG. 3A, before the operation, the peripheral surface of the other end portion 142 of the first inclined forming plate 140a is in contact with the peripheral surface of the first stopper member 155. The peripheral surface of the other end portion 145 of the inclination forming plate 140b is in contact with the peripheral surface of the stopper member, and the seating support portion 147 spanned between the first inclination forming plate 140a and the second inclination forming plate 140b. The occupant's buttocks are supported.
Then, as shown in FIG. 3A, the gears 164 to 162 and the pinion 161 are rotated in order by receiving the operating current from the control unit and rotating the electric motor to rotate the pinion 161. In response, the rack 150 moves in the direction of the arrow in the figure. At this time, the fixing pin 151 of the moving rack 150 is pulled by the control hole 143 and the other end 142 of the first inclined forming plate 140a moves in the direction of the arrow in the drawing. At this time, the other end 145 of the second inclined forming plate 140b is also pulled and moved in the same manner.
Thereafter, as shown in FIG. 3B, the other end 142 of the first inclination forming plate 140 a is fitted between the first stopper 155 and the second stopper 156, so that the movement of the rack 150 is stopped. At this time, the other end portion 145 of the second inclined forming plate 140b is similarly fitted between the two stoppers. At this time, the supply of current to the electric motor may be cut off, and the electric motor may be stopped.
Then, since the first inclined forming plate 140a and the second inclined forming plate 140b are inclined, the seating support portion 147 is also inclined, so that the seat 2 with the occupant's buttocks is recessed and the state shown in FIG. Occurrence of the phenomenon is prevented. Since the occupant protection device of the present invention is activated by the pre-crash sensor before the vehicle collides, even if the vehicle subsequently collides, sufficient occupant protection can be achieved.
Further, the occupant protection device of the present invention can also prevent the occurrence of a submarine phenomenon by performing the same operation as described above even during sudden deceleration accompanying sudden braking by using an acceleration sensor. .
When the vehicle can travel normally after the state shown in FIG. 3B, the electric motor rotates in the reverse direction to return to the state shown in FIG. 3A to prepare for the next collision or deceleration. it can.
The perspective view of the vehicle seat which attaches the passenger | crew safety ensuring apparatus of this invention. (A) is a passenger | crew safety ensuring apparatus of this invention before an action | operation, (b) is sectional drawing which shows the passenger | crew safety ensuring apparatus of this invention after an action | operation. (A) is a passenger | crew safety ensuring apparatus which is another embodiment of this invention before an action | operation, (b) is sectional drawing which shows the passenger | crew safety ensuring apparatus which is another embodiment of this invention after an action | operation. It is a perspective view of the movable part 140 of FIG.
DESCRIPTION OF SYMBOLS 1 Seat 2 Seating part 3 Backrest part 10, 20, 30 Frame 40 Movable part 41 Main body part 42 Mounting part 43 On / off means 44 Pin 51 Rack 54 Pinion 55 Electric motor 61 On switch 62 Off switch
An occupant safety ensuring device comprising at least a pre-crash sensor as the sensor.
The movable portion is provided at the front end portion of the seating portion of the vehicle seat, and when the impact caused by the collision or rapid deceleration is applied to the occupant wearing the seat belt, the front end portion protrudes upward. The occupant safety ensuring device according to claim 1, wherein
The movable portion is provided at the rear end portion of the seat portion of the vehicle seat, and when an impact caused by a collision or rapid deceleration is applied to an occupant wearing the seat belt, the rear end portion side is lowered. The occupant safety ensuring device according to claim 1, wherein the occupant safety ensuring device is recessed.
As the sensor, in addition to a pre-crash sensor for detecting that the vehicle is suddenly approaching an object to be collided when the vehicle is running, it detects a rapid deceleration when the vehicle is running and suddenly braked. The occupant safety ensuring device according to any one of claims 1 to 3, further comprising an acceleration sensor or a deceleration sensor.
JP2007211202A 2007-08-14 2007-08-14 Safety ensuring device for occupant Pending JP2009045963A (en)
JP2007211202A JP2009045963A (en) 2007-08-14 2007-08-14 Safety ensuring device for occupant
JP2009045963A true JP2009045963A (en) 2009-03-05
JP2007211202A Pending JP2009045963A (en) 2007-08-14 2007-08-14 Safety ensuring device for occupant
US (1) US20090045614A1 (en)
EP (1) EP2025554B1 (en)
JP (1) JP2009045963A (en)
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