Patent Description:
Among vehicles such as conventional saddle-type vehicles, there is known one including a brake fluid pressure control device for executing an anti-lock braking operation of a brake system. This brake fluid pressure control device adjusts a braking force generated in a vehicle wheel by increasing and decreasing a pressure of a brake fluid in a brake fluid circuit while an occupant of a vehicle operates an input unit such as a brake lever. As such a brake fluid pressure control device, there is known one obtained by unitizing a flow path constituting a part of the brake fluid circuit, a coil driving a hydraulic pressure adjusting valve opening and closing the flow path, a circuit board controlling energization of the coil, and the like.

Specifically, the unitized brake fluid pressure control device includes a base body to which a flow path for a brake fluid is formed, a coil which is erected on the base body and drives a hydraulic pressure adjusting valve opening and closing the flow path for the brake fluid, a circuit board which controls energization of the coil, and a housing which is connected to the base body and covers the coil and the circuit board. Further, the housing includes a main body portion and a lid. The main body portion is connected to the base body. Further, the main body portion is provided with an opening portion used when accommodating the circuit board and the like in the housing. The lid is attached to the main body portion and covers the opening portion of the main body portion (for example, see <CIT>).

In the unitized conventional brake fluid pressure control device, there is also proposed one which improves the airtightness between the main body portion and the lid of the housing in order to suppress moisture or the like from entering the housing from between the main body portion and the lid. Specifically, the conventional brake fluid pressure control device which improves the airtightness between the main body portion and the lid of the housing has the following configuration. The main body portion includes a groove portion which is formed on the outer peripheral side of the opening portion to open toward the lid. On the other hand, the lid includes an insertion wall which extends toward the main body portion and is inserted into the groove portion. Then, a gap between the groove portion and the insertion wall is sealed by a sealing material.

Here, in the conventional brake fluid pressure control device which improves the airtightness between the main body portion and the lid of the housing, when attaching the lid to the main body portion, the sealing material is charged into the groove portion of the main body portion and then the insertion wall of the lid is inserted into the groove portion. At this time, the sealing material charged in the groove portion may leak to the outside of the outer peripheral wall of the groove portion when inserting the insertion wall of the lid into the groove portion. In other words, the sealing material charged in the groove portion may leak to the outside of the brake fluid pressure control device when inserting the insertion wall of the lid into the groove portion. Therefore, in the conventional brake fluid pressure control device which improves the airtightness between the main body portion and the lid of the housing, there is also provided one that suppresses the sealing material from leaking to the outside of the brake fluid pressure control device by providing a wall portion surrounding the outside of the outer peripheral wall of the groove portion (a position where the sealing material leaks to the outside of the brake fluid pressure control device) to the lid.

<CIT> describes a brake fluid pressure control device for a saddle-type vehicle having a base body to which a flow path for a brake fluid is formed, a coil erected on the base body and driving a hydraulic pressure adjusting valve opening and closing the flow path, a circuit board controlling energization of the coil and a housing connected to the base body and covering the coil and the circuit board. The housing comprises a main body portion connected to the base body and a lid. An opening portion is formed in the main body portion, which is covered by the lid.

<CIT> discloses a technique for linking a lid to a main base body, wherein an insertion wall is formed at the main base body and a groove portion is formed at the lid. The groove portion is surrounded by an outer peripheral wall and an inner peripheral wall so that a height of the outer peripheral wall is equal to a height of the inner peripheral wall.

As described above, the conventional brake fluid pressure control device which improves the airtightness between the main body portion and the lid of the housing and suppresses the sealing material from leaking to the outside of the brake fluid pressure control device increases in size in the direction perpendicular to the facing direction between the main body portion and the lid by the amount of the wall portion disposed on the outer peripheral side of the main body portion. Therefore, it was difficult to decrease the size of the conventional brake fluid pressure control device which improves the airtightness between the main body portion and the lid of the housing and suppresses the sealing material from leaking to the outside of the brake fluid pressure control device.

The invention has been made in view of the above-described circumstances and an object of the invention is to provide a brake fluid pressure control device capable of improving airtightness between a main body portion and a lid of a housing, suppressing a sealing material from leaking to the outside of the brake fluid pressure control device, and having a smaller size than the conventional one. Further, another object of the invention is to provide a saddle-type vehicle including such a brake fluid pressure control device. Solution to Problem.

A brake fluid pressure control device according to the invention is a brake fluid pressure control device for a saddle-type vehicle as defined in the appended independent claim <NUM>.

Further, a saddle-type vehicle according to the invention includes the brake fluid pressure control device according to the invention, as defined in appended claim <NUM>.

In the brake fluid pressure control device according to the invention, the length of the outer peripheral wall of the groove portion in the first direction (the length in the facing direction between the main body portion and the lid) is longer than the length of the inner peripheral wall of the groove portion in the first direction. Therefore, in the brake fluid pressure control device according to the invention, it is possible to store the sealing material leaking to the outside of the brake fluid pressure control device in the conventional brake fluid pressure control device between the insertion wall and the outer peripheral wall of the groove portion. That is, in the brake fluid pressure control device according to the invention, it is possible to suppress the sealing material from leaking to the outside of the brake fluid pressure control device even when the wall portion provided in the lid of the conventional brake fluid pressure control device in order to suppress the sealing material from leaking to the outside of the brake fluid pressure control device is not provided. Therefore, the brake fluid pressure control device according to the invention can suppress the sealing material from leaking to the outside of the brake fluid pressure control device while suppressing an increase in size of the brake fluid pressure control device in the direction perpendicular to the facing direction between the main body portion and the lid.

Here, in the brake fluid pressure control device, the housing accommodates the coil driving the hydraulic pressure adjusting valve and the circuit board controlling the energization of the coil. Therefore, the housing of the brake fluid pressure control device originally requires a certain degree of length in the facing direction between the main body portion and the lid. Thus, even when the length of the outer peripheral wall of the groove portion in the first direction is longer than the length of the inner peripheral wall of the groove portion in the first direction, the brake fluid pressure control device according to the invention does not increase in size in the facing direction between the main body portion and the lid compared to the conventional brake fluid pressure control device.

Therefore, the brake fluid pressure control device according to the invention can be decreased in size compared to the conventional brake fluid pressure control device which improves the airtightness between the main body portion and the lid of the housing and suppresses the sealing material from leaking to the outside of the brake fluid pressure control device.

Hereinafter, a brake fluid pressure control device and a saddle-type vehicle according to the invention will be described with reference to the drawings.

Hereinafter, a case will be described in which the invention is applied to a bicycle (for example, a two-wheeled vehicle, a three-wheeled vehicle, or the like), but the invention may be applied to a saddle-type vehicle other than the bicycle. The saddle-type vehicle other than the bicycle is, for example, a motorcycle, a tricycle, a buggie, or the like which is driven by at least one of an engine and an electric motor. Further, the bicycle means all vehicles that can be propelled on a road by a pedaling force applied to pedals. That is, the bicycle includes an ordinary bicycle, an electrically power assisted bicycle, an electric bicycle, and the like. Further, the motorcycle or the tricycle means a so-called motorcycle, and the motorcycle includes a motorcycle, a scooter, an electric scooter, and the like.

Further, the configuration, operation, and the like described below are examples, and the brake fluid pressure control device and the saddle-type vehicle according to the invention are not limited to such configurations, operations, and the like. For example, hereinafter, a case will be described in which the brake fluid pressure control device according to the invention is of a pumpless type, but the brake fluid pressure control device according to the invention may include a pump that assists the flow of the brake fluid. Further, hereinafter, a case will be described in which the brake system including the brake fluid pressure control device according to the invention executes anti-lock braking control only for the braking force generated on the front wheels. However, the brake system including the brake fluid pressure control device according to the invention may execute anti-lock braking control only for the braking force generated on the rear wheels or may execute anti-lock braking control for both the braking force generated on the front wheel and the braking force generated on the rear wheels.

Further, in each figure, the same or similar members or parts are designated by the same reference numerals or the reference numerals are omitted. For detailed structures, the illustrations are simplified or omitted as appropriate. Further, duplicate descriptions are simplified or omitted as appropriate.

An installation of the brake system including the brake fluid pressure control device according to this embodiment on the bicycle will be described.

<FIG> is a view showing a schematic configuration of a bicycle to which a brake system including a brake fluid pressure control device according to an embodiment of the invention is installed. Additionally, in <FIG>, a case is shown in which a bicycle <NUM> is a two-wheeled vehicle, but the bicycle <NUM> may be another bicycle such as a tricycle.

The bicycle <NUM> which is an example of the saddle-type vehicle includes a frame <NUM>, a turning portion <NUM>, a saddle <NUM>, a pedal <NUM>, a rear wheel <NUM>, and a rear wheel brake <NUM>.

The frame <NUM> includes, for example, a head tube <NUM> which axially supports a steering column <NUM> of the turning portion <NUM>, a top tube <NUM> and a down tube <NUM> which are connected to the head tube <NUM>, a seat tube <NUM> which is connected to the top tube <NUM> and the down tube <NUM> and holds the saddle <NUM>, and a stay <NUM> which is connected to the upper and lower ends of the seat tube <NUM> and holds the rear wheel <NUM> and the rear wheel brake <NUM>.

The turning portion <NUM> includes the steering column <NUM>, a handle stem <NUM> which is held by the steering column <NUM>, a handle bar <NUM> which is held by the handle stem <NUM>, a braking operation portion <NUM> which is attached to the handle bar <NUM>, a front fork <NUM> which is connected to the steering column <NUM>, a front wheel <NUM> which is rotatably held by the front fork <NUM>, and a front wheel brake <NUM>. The front fork <NUM> is provided on both sides of the front wheel <NUM>. One end of the front fork <NUM> is connected to the steering column <NUM> and the other end thereof is connected to the rotation center of the front wheel <NUM>.

The braking operation portion <NUM> includes a mechanism which is used as an operation portion of the front wheel brake <NUM> and a mechanism which is used as an operation portion of the rear wheel brake <NUM>. For example, the mechanism which is used as the operation portion of the front wheel brake <NUM> is disposed on the right end side of the handle bar <NUM> and the mechanism which is used as the operation portion of the rear wheel brake <NUM> is disposed on the left end side of the handle bar <NUM>.

The bicycle <NUM> with such a configuration includes a brake fluid pressure control device <NUM>. In this embodiment, the brake fluid pressure control device <NUM> is attached to the front fork <NUM> of the turning portion <NUM>. The brake fluid pressure control device <NUM> is a unit which is in charge of controlling the hydraulic pressure of the brake fluid of the front wheel brake <NUM>. Additionally, the rear wheel brake <NUM> may be a brake of a type that generates a braking force by increasing the hydraulic pressure of the brake fluid or a brake of a type that mechanically generates a braking force (for example, a brake of a type that generates a braking force by causing a tension in a wire).

Further, the bicycle <NUM> includes a power unit <NUM> which is a power supply of the brake fluid pressure control device <NUM>. The power unit <NUM> is attached to, for example, the down tube <NUM> of the frame <NUM>. The power unit <NUM> may be a battery or a generator. The generator includes, for example, a generator which generates power by the running of the bicycle <NUM> (for example, a hub generator which generates power by the rotation of the front wheel <NUM> or the rear wheel <NUM>, a generator which is a motor of a drive source of the front wheel <NUM> or the rear wheel <NUM> and generates regenerative power, and the like), a generator which generates power by sun light, and the like.

That is, the brake system <NUM> including at least the braking operation portion <NUM>, the front wheel brake <NUM>, the brake fluid pressure control device <NUM>, and the power unit <NUM> is installed to the bicycle <NUM>. The brake system <NUM> can execute anti-lock braking control by controlling the hydraulic pressure of the brake fluid of the front wheel brake <NUM> using the brake fluid pressure control device <NUM>.

A configuration of the brake system according to the embodiment will be described.

<FIG> is a view showing a schematic configuration of the brake system according to the embodiment of the invention.

The brake fluid pressure control device <NUM> includes a base body <NUM>. The base body <NUM> is provided with a master cylinder port <NUM>, a wheel cylinder port <NUM>, and a flow path <NUM> which allows the master cylinder port <NUM> and the wheel cylinder port <NUM> to communicate with each other.

The flow path <NUM> is a flow path of the brake fluid. The flow path <NUM> includes a first flow path <NUM>, a second flow path <NUM>, a third flow path <NUM>, and a fourth flow path <NUM>. The master cylinder port <NUM> and the wheel cylinder port <NUM> communicate with each other through the first flow path <NUM> and the second flow path <NUM>. Further, an inlet side end portion of the third flow path <NUM> is connected to the middle portion of the second flow path <NUM>.

The braking operation portion <NUM> is connected to the master cylinder port <NUM> through a liquid pipe <NUM>. The braking operation portion <NUM> includes a brake lever <NUM>, a master cylinder <NUM>, and a reservoir <NUM>. The master cylinder <NUM> includes a piston portion (not shown) which moves in conjunction with the user's operation for the brake lever <NUM> and is connected to the inlet side of the first flow path <NUM> through the liquid pipe <NUM> and the master cylinder port <NUM>. By the movement of the piston portion, the hydraulic pressure of the brake fluid of the first flow path <NUM> increases or decreases. Further, the reservoir <NUM> can store the brake fluid of the master cylinder <NUM>.

The front wheel brake <NUM> is connected to the wheel cylinder port <NUM> through a liquid pipe <NUM>. The front wheel brake <NUM> includes a wheel cylinder <NUM> and a rotor <NUM>. The wheel cylinder <NUM> is attached to the lower end portion of the front fork <NUM>. The wheel cylinder <NUM> includes a piston portion (not shown) which moves in conjunction with the hydraulic pressure of the liquid pipe <NUM> and is connected to the outlet side of the second flow path <NUM> through the liquid pipe <NUM> and the wheel cylinder port <NUM>. The rotor <NUM> is held by the front wheel <NUM> and rotates together with the front wheel <NUM>. A brake pad (not shown) is pressed against the rotor <NUM> by the movement of the piston portion, thereby braking the front wheel <NUM>.

Further, the brake fluid pressure control device <NUM> includes a hydraulic pressure adjusting valve <NUM> which opens and closes the flow path <NUM> and coils <NUM> which drive the hydraulic pressure adjusting valve <NUM>. In this embodiment, the brake fluid pressure control device <NUM> includes an inlet valve <NUM> and an outlet valve <NUM> as the hydraulic pressure adjusting valve <NUM>. The inlet valve <NUM> is provided between the outlet side of the first flow path <NUM> and the inlet side of the second flow path <NUM> and enables and disables the flow of the brake fluid between the first flow path <NUM> and the second flow path <NUM>. The outlet valve <NUM> is provided between the outlet side of the third flow path <NUM> and the inlet side of the fourth flow path <NUM> and enables and disables the flow of the brake fluid between the third flow path <NUM> and the fourth flow path <NUM>. By the opening and closing operations of the inlet valve <NUM> and the outlet valve <NUM>, the hydraulic pressure of the brake fluid is controlled.

Further, in this embodiment, the brake fluid pressure control device <NUM> includes a coil <NUM> which drives the inlet valve <NUM> and a coil <NUM> which drives the outlet valve <NUM> as the coils <NUM>. For example, when the coil <NUM> is in the non-energized state, the inlet valve <NUM> enables the flow of the brake fluid in both directions. Then, when the coil <NUM> is in the energized state, the inlet valve <NUM> is closed and disables the flow of the brake fluid. That is, in this embodiment, the inlet valve <NUM> is a solenoid valve which is opened in the non-energized state. Further, for example, when the coil <NUM> is in the non-energized state, the outlet valve <NUM> disables the flow of the brake fluid. Then, when the coil <NUM> is energized, the outlet valve <NUM> is opened to enable the flow of the brake fluid in both directions. That is, in this embodiment, the outlet valve <NUM> is a solenoid valve which is closed in the non-energized state.

Further, the brake fluid pressure control device <NUM> includes an accumulator <NUM>. The accumulator <NUM> is connected to the outlet side of the fourth flow path <NUM> and stores the brake fluid having passed through the outlet valve <NUM>.

Further, the brake fluid pressure control device <NUM> includes a hydraulic pressure sensor <NUM> for detecting the hydraulic pressure of the brake fluid of the wheel cylinder <NUM>. The hydraulic pressure sensor <NUM> is provided to the second flow path <NUM> or the third flow path <NUM>.

Further, the brake fluid pressure control device <NUM> includes a control unit <NUM>. Signals of various sensors such as the hydraulic pressure sensor <NUM> and a vehicle wheel speed sensor (not shown) for detecting the rotation speed of the front wheel <NUM> are input to the control unit <NUM>. Additionally, each part of the control unit <NUM> may be arranged together or dispersedly. For example, the control unit <NUM> may be configured to include a microcomputer, a microprocessor unit, and the like, may be configured to include an updatable one such as firmware, or may be configured to include a program module or the like executed by an instruction from a CPU and the like.

The control unit <NUM> controls the energization of the coil <NUM> and the coil <NUM>. Specifically, the control unit <NUM> controls the driving (opening and closing operation) of the inlet valve <NUM> by controlling the energization of the coil <NUM>. Further, the control unit <NUM> controls the driving (opening and closing operation) of the outlet valve <NUM> by controlling the energization of the coil <NUM>. That is, the control unit <NUM> controls the hydraulic pressure of the brake fluid of the wheel cylinder <NUM>, that is, the braking force of the front wheel <NUM> by controlling the opening and closing operation of the inlet valve <NUM> and the outlet valve <NUM>.

Additionally, in this embodiment, at least the configuration for controlling the energization of the coil <NUM> and the coil <NUM> among the configurations of the control unit <NUM> is configured by a circuit board <NUM> described later. That is, the circuit board <NUM> controls the driving of the inlet valve <NUM> and the outlet valve <NUM> by controlling the energization of the coil <NUM> and the coil <NUM>.

For example, if it is determined that the front wheel <NUM> is locked or may be locked from the signal of the vehicle wheel speed sensor (not shown) when the front wheel <NUM> is braked by the user's operation of the brake lever <NUM>, the control unit <NUM> starts anti-lock braking control.

If the anti-lock braking control starts, the control unit <NUM> suppresses an increase in pressure of the brake fluid of the wheel cylinder <NUM> by disabling the flow of the brake fluid from the master cylinder <NUM> to the wheel cylinder <NUM> in such a manner that the coil <NUM> is energized and the inlet valve <NUM> is closed. On the other hand, the control unit <NUM> decreases the pressure of the brake fluid of the wheel cylinder <NUM> by enabling the flow of the brake fluid from the wheel cylinder <NUM> to the accumulator <NUM> in such a manner that the coil <NUM> is energized and the outlet valve <NUM> is opened. Accordingly, the lock of the front wheel <NUM> is released or avoided. If it is determined that the brake fluid of the wheel cylinder <NUM> is depressurized to a predetermined value from the signal of the hydraulic pressure sensor <NUM>, the control unit <NUM> does not energize the coil <NUM> to close the outlet valve <NUM> and does not energize the coil <NUM> to open the inlet valve <NUM> for a short period of time so that the pressure of the brake fluid of the wheel cylinder <NUM> increases and decreases. The control unit <NUM> may increase and decrease the pressure of the wheel cylinder <NUM> only once or a plurality of times in a repeated manner.

If the anti-lock braking control ends and the brake lever <NUM> is returned, the inside of the master cylinder <NUM> enters an atmospheric pressure state and the brake fluid in the wheel cylinder <NUM> is returned. Further, the outlet valve <NUM> is opened when the anti-lock braking control ends and the brake lever <NUM> is returned. If the pressure of the brake fluid in the flow path <NUM> becomes lower than the pressure of the brake fluid stored in the accumulator <NUM>, the brake fluid stored in the accumulator <NUM> is discharged to the outside of the accumulator <NUM> without boosting (that is, without pump), is returned to the flow path <NUM>, and is eventually returned to the master cylinder <NUM>.

The brake fluid pressure control device <NUM> includes the base body <NUM>, the coils <NUM>, the circuit board <NUM>, and a housing <NUM>. Hereinafter, a configuration of the brake fluid pressure control device <NUM> according to this embodiment will be described.

<FIG> is a cross-sectional view of the brake fluid pressure control device according to the embodiment of the invention. Specifically, the housing <NUM> of the brake fluid pressure control device <NUM> includes a main body portion <NUM> and a lid <NUM>. As will be described later, the main body portion <NUM> includes a groove portion <NUM> and the lid <NUM> includes an insertion wall <NUM> which is inserted into the groove portion <NUM>. <FIG> is a cross-sectional view in which the housing <NUM> is cut in a virtual plane which is parallel to a first direction corresponding to the facing direction between the main body portion <NUM> and the lid <NUM> and passes through the insertion wall <NUM>, an outer peripheral wall <NUM> of the groove portion <NUM>, and an inner peripheral wall <NUM> of the groove portion <NUM>. Hereinafter, the first direction which is the facing direction between the main body portion <NUM> and the lid <NUM> is set as a first direction Y. Further, in the cross-sectional view shown in <FIG>, a direction perpendicular to the first direction Y is set as a second direction X.

Further, <FIG> is a view in which the lid of the housing of the brake hydraulic pressure control device according to the embodiment of the invention is viewed from the main body portion side of the housing. Additionally, in <FIG>, the shape of the opening portion of the groove portion <NUM> of the main body portion <NUM> is indicated by a two-dotted chain line which is an imaginary line.

The base body <NUM> is, for example, a substantially rectangular parallelepiped member made of an aluminum alloy. Each surface of the base body <NUM> may be flat or may include a curved portion or a step. The coil <NUM> and the coil <NUM> which are the coils <NUM> are erected on the surface <NUM> of the base body <NUM>.

Specifically, as described above, the brake fluid pressure control device <NUM> according to this embodiment includes the inlet valve <NUM> and the outlet valve <NUM> as the hydraulic pressure adjusting valve <NUM>. On the other hand, a recess portion <NUM> and a recess portion <NUM> are formed in the base body <NUM>. In the recess portion <NUM>, the outlet side of the first flow path <NUM> and the inlet side of the second flow path <NUM> communicate with each other and the inlet valve <NUM> is movably provided. Then, the flow of the brake fluid between the first flow path <NUM> and the second flow path <NUM> is enabled and disabled when the inlet valve <NUM> moves in the recess portion <NUM>. Further, in the recess portion <NUM>, the outlet side of the third flow path <NUM> and the inlet side of the fourth flow path <NUM> communicate with each other and the outlet valve <NUM> is movably provided. Then, the flow of the brake fluid between the third flow path <NUM> and the fourth flow path <NUM> is enabled and disabled when the outlet valve <NUM> moves in the recess portion <NUM>. In a state in which the inlet valve <NUM> is provided to the recess portion <NUM>, a part of the inlet valve <NUM> protrudes from the surface <NUM> toward the outside of the base body <NUM>. The coil <NUM> which drives the inlet valve <NUM> is erected on the surface <NUM> of the base body <NUM> to surround the protruding portion of the inlet valve <NUM>. Similarly, a part of the outlet valve <NUM> protrudes from the surface <NUM> toward the outside of the base body <NUM> in a state in which the outlet valve <NUM> is provided in the recess portion <NUM>. The coil <NUM> which drives the outlet valve <NUM> is erected on the surface <NUM> of the base body <NUM> to surround the protruding portion of the outlet valve <NUM>.

The circuit board <NUM> which controls the energization of the coil <NUM> and the coil <NUM> is electrically connected to the coil <NUM> and the coil <NUM>. In this embodiment, the circuit board <NUM> is electrically connected to the coil <NUM> via a connection terminal <NUM> and is electrically connected to the coil <NUM> via a connection terminal <NUM>.

The housing <NUM> is connected to the base body <NUM> to cover the coil <NUM> and the circuit board <NUM>. In this embodiment, the housing <NUM> is connected to the surface <NUM> of the base body <NUM>. Further, the brake fluid pressure control device <NUM> according to this embodiment includes the hydraulic pressure sensor <NUM> as described above. In this embodiment, the hydraulic pressure sensor <NUM> is also covered by the housing <NUM>.

This housing <NUM> includes the main body portion <NUM> and the lid <NUM> as described above. The main body portion <NUM> is connected to the housing <NUM>. Further, an opening portion <NUM> is formed in the main body portion <NUM>. The opening portion <NUM> is used, for example, when accommodating the circuit board <NUM> and the like in the housing <NUM>. In this embodiment, the opening portion <NUM> has, for example, a substantially square shape and is formed at a position facing the circuit board <NUM>. The lid <NUM> covers the opening portion <NUM> and is attached to the main body portion <NUM>. In order to prevent moisture or the like from entering the housing <NUM> from between the main body portion <NUM> and the lid <NUM>, the housing <NUM> improves the airtightness between the main body portion <NUM> and the lid <NUM> by the following configuration.

<FIG> is an enlarged view of an A part of <FIG>. In <FIG>, the left side of the paper is the outside of the housing <NUM> and the right side of the paper is the inside of the housing <NUM>. That is, in <FIG>, the left side of the paper is the outside of the brake fluid pressure control device <NUM>.

The main body portion <NUM> includes the groove portion <NUM> which is formed on the outer peripheral side of the opening portion <NUM> to open toward the lid <NUM>. As shown in <FIG>, in this embodiment, the shape of the opening portion of the groove portion <NUM> corresponds to the shape of the opening portion <NUM> when viewed from the side of the lid <NUM> and has a substantially square frame shape. This groove portion <NUM> includes a bottom portion <NUM>, the outer peripheral wall <NUM> which constitutes the outer peripheral wall of the groove portion <NUM> and extends from the bottom portion <NUM> toward the lid <NUM>, and the inner peripheral wall <NUM> which constitutes the inner peripheral wall of the groove portion <NUM> and extends from the bottom portion <NUM> toward the lid <NUM>. Further, the length of the outer peripheral wall <NUM> in the first direction Y is longer than the length of the inner peripheral wall <NUM> in the first direction Y.

On the other hand, the lid <NUM> includes the insertion wall <NUM> which extends toward the main body portion <NUM> and is inserted into the groove portion <NUM>. As shown in <FIG>, in this embodiment, the shape of the insertion wall <NUM> corresponds to the shape of the groove portion <NUM> when viewed from the side of the main body portion <NUM> and has a substantially square frame shape. In a state in which the insertion wall <NUM> is inserted into the groove portion <NUM>, a space <NUM> is formed between the outer peripheral wall <NUM> and the insertion wall <NUM> and between the inner peripheral wall <NUM> and the insertion wall <NUM>. This space <NUM> is a space which stores a sealing material. Then, the housing <NUM> according to this embodiment improves the airtightness between the main body portion <NUM> and the lid <NUM> by sealing a gap between the groove portion <NUM> and the insertion wall <NUM> with the sealing material stored in the space <NUM>. Additionally, in this embodiment, the space <NUM> for storing the sealing material is also formed between the insertion wall <NUM> and the bottom portion <NUM> of the groove portion <NUM>.

The housing <NUM> with such a configuration first charges the sealing material into the groove portion <NUM> of the main body portion <NUM> when attaching the lid <NUM> to the main body portion <NUM>. Then, the insertion wall <NUM> of the lid <NUM> is inserted into the groove portion <NUM> charged with the sealing material. Accordingly, the sealing material in the groove portion <NUM> is pressed by the insertion wall <NUM> to flow between the outer peripheral wall <NUM> and the insertion wall <NUM> and between the inner peripheral wall <NUM> and the insertion wall <NUM>. Then, the sealing material is stored between the outer peripheral wall <NUM> and the insertion wall <NUM> and between the inner peripheral wall <NUM> and the insertion wall <NUM> and a gap between the groove portion <NUM> and the insertion wall <NUM> is sealed by the sealing material.

Incidentally, also in the housing of the conventional brake hydraulic pressure control device, the airtightness between the main body portion and the lid is improved by the groove portion provided to the main body portion and the insertion wall provided to the lid and inserted into the groove portion of the main body portion. Hereinafter, the conventional brake fluid pressure control device including such a housing will be described. When describing the conventional brake fluid pressure control device below, the same configuration as the configuration of the brake fluid pressure control device <NUM> according to this embodiment will be described by adding "<NUM>" to the reference numeral of the configuration of the brake fluid pressure control device <NUM> according to this embodiment.

<FIG> is a main cross-sectional view showing the periphery of the groove portion of the main body portion of the housing of the conventional brake hydraulic pressure control device. <FIG> is a view in which a conventional brake fluid pressure control device <NUM> is cut in the same cross-section as that of <FIG> and the same position as that of the A part of <FIG> is observed. Therefore, in <FIG>, the left side of the paper is the outside of a conventional housing <NUM> and the right side of the paper is the inside of the conventional housing <NUM>. That is, in <FIG>, the left side of the paper is the outside of the conventional brake fluid pressure control device <NUM>.

Similarly to the main body portion <NUM> according to this embodiment, a main body portion <NUM> of the housing <NUM> of the conventional brake fluid pressure control device <NUM> includes a groove portion <NUM> which is formed on the outer peripheral side of the opening portion <NUM> to open toward a lid <NUM> of the housing <NUM>. Here, the groove portion <NUM> is different from the groove portion <NUM> according to this embodiment in that the length of an outer peripheral wall <NUM> in the first direction Y is not longer than the length of an inner peripheral wall <NUM> in the first direction Y. Further, similarly to the lid <NUM> according to this embodiment, the lid <NUM> of the housing <NUM> of the conventional brake fluid pressure control device <NUM> includes an insertion wall <NUM> which extends toward the main body portion <NUM> and is inserted into the groove portion <NUM>. Further, in a state in which the insertion wall <NUM> is inserted into the groove portion <NUM>, a space for storing a sealing material is formed between the outer peripheral wall <NUM> and the insertion wall <NUM> and between the inner peripheral wall <NUM> and the insertion wall <NUM>.

For the attachment of the lid <NUM> to the main body portion <NUM>, the sealing material is charged into the groove portion <NUM> of the main body portion <NUM> similarly to the housing <NUM> according to this embodiment. Then, the insertion wall <NUM> of the lid <NUM> is inserted into the groove portion <NUM> charged with the sealing material. Here, when the space is formed in both between the outer peripheral wall <NUM> and the insertion wall <NUM> and between the inner peripheral wall <NUM> and the insertion wall <NUM>, the amount of the sealing material flowing toward the outer peripheral wall <NUM> and the amount of the sealing material flowing toward the inner peripheral wall <NUM> become different depending on the insertion position and the insertion depth of the insertion wall <NUM> into the groove portion <NUM>. That is, the amount of the sealing material flowing toward the outer peripheral wall <NUM> may be larger than the expected amount depending on the insertion position and the insertion depth of the insertion wall <NUM> into the groove portion <NUM>.

At this time, as described above, in the housing <NUM> of the conventional brake fluid pressure control device <NUM>, the length of the outer peripheral wall <NUM> in the first direction Y is not longer than the length of the inner peripheral wall <NUM> in the first direction Y. Therefore, in the conventional brake fluid pressure control device <NUM>, if the amount of the sealing material flowing toward the outer peripheral wall <NUM> increases, the sealing material charged in the groove portion <NUM> may leak to the outside of the outer peripheral wall <NUM> (for example, a B part shown in <FIG>). Therefore, in the conventional brake fluid pressure control device <NUM>, a wall portion <NUM> which surrounds the outside of the outer peripheral wall <NUM> is provided to the lid in order to suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>. Therefore, it is difficult to realize a decrease in size since the conventional brake fluid pressure control device <NUM> increases in size in the second direction X by the amount of the wall portion <NUM>.

On the other hand, in the brake fluid pressure control device <NUM> according to this embodiment, as described above, the groove portion <NUM> of the main body portion <NUM> of the housing <NUM> is formed such that the length of the outer peripheral wall <NUM> in the first direction Y is longer than the length of the inner peripheral wall <NUM> in the first direction Y. Therefore, in the brake fluid pressure control device <NUM> according to this embodiment, even when the amount of the sealing material flowing toward the outer peripheral wall <NUM> increases, the sealing material leaking to the outside of the outer peripheral wall <NUM> in the conventional brake fluid pressure control device <NUM> can be stored between the insertion wall <NUM> and the outer peripheral wall <NUM> of the groove portion <NUM>. That is, in the brake fluid pressure control device <NUM> according to this embodiment, it is possible to suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM> even when the wall portion <NUM> of the lid <NUM> of the conventional brake fluid pressure control device <NUM> is not provided. Therefore, the brake fluid pressure control device <NUM> according to this embodiment can suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM> while suppressing an increase in size in the second direction X.

Here, conventionally, the brake fluid pressure control device is formed such that the housing accommodates the coil for driving the hydraulic pressure adjusting valve and the circuit board controlling the energization of the coil. Therefore, the housing of the brake fluid pressure control device originally requires a certain length in the direction in which the main body portion and the lid face each other. Thus, even when the length of the outer peripheral wall <NUM> in the first direction Y is longer than the length of the inner peripheral wall <NUM> in the first direction Y as in this embodiment, the brake fluid pressure control device <NUM> according to this embodiment does not increase in size in the first direction Y compared to the conventional brake fluid pressure control device.

Therefore, the brake fluid pressure control device <NUM> according to this embodiment can be decreased in size compared to the conventional brake fluid pressure control device which improves the airtightness between the main body portion and the lid of the housing and suppresses the sealing material from leaking to the outside of the brake fluid pressure control device.

An effect of the brake fluid pressure control device according to this embodiment will be described.

The brake fluid pressure control device <NUM> according to this embodiment includes the base body <NUM> to which the flow path <NUM> for the brake fluid is formed, the coils <NUM> which are erected on the base body <NUM> and drives the hydraulic pressure adjusting valve <NUM> opening and closing the flow path <NUM>, the circuit board <NUM> which controls the energization of the coils <NUM>, and the housing <NUM> which is connected to the base body <NUM> and covers the coil <NUM> and the circuit board <NUM>. The housing <NUM> includes the main body portion <NUM> which is connected to the base body <NUM> and is provided with the opening portion <NUM> and the lid <NUM> which covers the opening portion <NUM> and is attached to the main body portion <NUM>. The main body portion <NUM> includes the groove portion <NUM> which is formed on the outer peripheral side of the opening portion <NUM> to open toward the lid <NUM>. The lid <NUM> includes the insertion wall <NUM> which extends toward the main body portion <NUM> and is inserted into the groove portion <NUM>. Then, the brake fluid pressure control device <NUM> is formed such that a gap between the groove portion <NUM> and the insertion wall <NUM> is sealed by the sealing material and the brake fluid pressure control device <NUM> is, for example, a brake fluid pressure control device for a saddle-type vehicle which is the bicycle <NUM>. The groove portion <NUM> includes the bottom portion <NUM>, the outer peripheral wall <NUM> which constitutes the outer peripheral wall of the groove portion <NUM> and extends from the bottom portion <NUM> toward the lid <NUM>, and the inner peripheral wall <NUM> which constitutes the inner peripheral wall of the groove portion <NUM> and extends from the bottom portion <NUM> toward the lid <NUM>. Further, the space <NUM> for storing the sealing material is formed between the outer peripheral wall <NUM> and the insertion wall <NUM> and between the inner peripheral wall <NUM> and the insertion wall <NUM>. Further, the length of the outer peripheral wall <NUM> in the first direction Y is longer than the length of the inner peripheral wall <NUM> in the first direction Y.

In the brake fluid pressure control device <NUM> according to this embodiment, the length of the outer peripheral wall <NUM> in the first direction Y is longer than the length of the inner peripheral wall <NUM> in the first direction Y. Therefore, the brake fluid pressure control device <NUM> according to this embodiment can suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM> while suppressing an increase in size in the second direction X as described above. Further, the brake fluid pressure control device <NUM> according to this embodiment does not increase in size in the first direction Y compared to the conventional brake fluid pressure control device as described above. Therefore, the brake fluid pressure control device <NUM> according to this embodiment can be decreased in size compared to the conventional brake fluid pressure control device which improves the airtightness between the main body portion and the lid of the housing and suppresses the sealing material from leaking to the outside of the brake fluid pressure control device.

Further, the brake fluid pressure control device <NUM> according to this embodiment does not require the wall portion <NUM> of the lid <NUM> of the conventional brake fluid pressure control device <NUM> as described above. This wall portion <NUM> may hinder the improvement of the aesthetic appearance of the brake fluid pressure control device <NUM>. That is, the brake fluid pressure control device <NUM> according to this embodiment can improve the aesthetic appearance compared to the conventional brake fluid pressure control device <NUM> including the wall portion <NUM>.

Preferably, the brake fluid pressure control device <NUM> according to this embodiment is mounted on a saddle-type vehicle such as the bicycle <NUM>. Compared to the vehicle such as a four-wheeled vehicle, the saddle-type vehicle has a lower degree of freedom in component layout and a lower degree of freedom in installing the brake fluid pressure control device. Therefore, the brake fluid pressure control device <NUM> according to this embodiment which can be decreased in size compared to the conventional one is suitable when installing the brake fluid pressure control device improving the airtightness between the lid and the main body portion of the housing and suppressing the sealing material from leaking to the outside of the brake fluid pressure control device in the saddle-type vehicle. Further, in the saddle-type vehicle, the brake fluid pressure control device is easier to see from the outside than in the vehicle such as a four-wheeled vehicle. Therefore, since the brake fluid pressure control device <NUM> according to this embodiment capable of suppressing the sealing material from leaking to the outside of the brake fluid pressure control device is installed in the saddle-type vehicle, it is possible to suppress deterioration of the aesthetic appearance of the saddle-type vehicle.

<FIG> is a main cross-sectional view showing the periphery of a groove portion of a main body portion of a housing of a modified example of the brake fluid pressure control device according to the embodiment of the invention. <FIG> is a view in which the modified example of the brake fluid pressure control device <NUM> is cut in the same cross-section as that of <FIG> and the same position as that of the A part of <FIG> is observed. Therefore, in <FIG>, the left side of the paper is the outside of the housing <NUM> and the right side of the paper is the inside of the housing <NUM>. That is, in <FIG>, the left side of the paper is the outside of the modified example of the brake fluid pressure control device <NUM>.

In <FIG>, the configuration between the insertion wall <NUM> and the bottom portion <NUM> of the groove portion <NUM> is not particularly mentioned. For example, the configuration between the insertion wall <NUM> and the bottom portion <NUM> of the groove portion <NUM> shown in <FIG> is preferable. Here, in the description of the configuration between the bottom portion <NUM> of the groove portion <NUM> and the insertion wall <NUM>, a center line <NUM>, an outer peripheral line <NUM>, an inner peripheral line <NUM>, an outer peripheral region <NUM>, and an inner peripheral region <NUM> in the cross-section shown in <FIG> are defined as below. In a root portion <NUM> of an insertion region <NUM> located on the inside of the groove portion <NUM> of the insertion wall <NUM>, a straight line passing through the center point in the second direction X and parallel to the first direction Y is set as the center line <NUM>. A straight line passing through the point on the side closest to the outer peripheral wall <NUM> in the insertion region <NUM> and parallel to the first direction Y is set as the outer peripheral line <NUM>. A straight line passing through the point on the side closest to the inner peripheral wall <NUM> in the insertion region <NUM> and parallel to the first direction Y is set as the inner peripheral line <NUM>. A region surrounded by the insertion wall <NUM>, the center line <NUM>, the outer peripheral line <NUM>, and the bottom portion <NUM> of the groove portion <NUM> is set as the outer peripheral region <NUM>. A region surrounded by the insertion wall <NUM>, the center line <NUM>, the inner peripheral line <NUM>, and the bottom portion <NUM> of the groove portion <NUM> is set as the inner peripheral region <NUM>.

When the outer peripheral region <NUM> and the inner peripheral region <NUM> are defined in this way, the area of the inner peripheral region <NUM> is preferably larger than the area of the outer peripheral region <NUM>. Additionally, in <FIG>, the area of the inner peripheral region <NUM> is larger than the area of the outer peripheral region <NUM> due to the insertion region <NUM> formed in an asymmetrical shape with the center line <NUM> as the axis of symmetry. Since the area of the inner peripheral region <NUM> is larger than the area of the outer peripheral region <NUM>, the pressure generated in the sealing material existing in the outer peripheral region <NUM> becomes larger than the pressure generated in the sealing material existing in the inner peripheral region <NUM> when the insertion wall <NUM> of the lid <NUM> is inserted into the groove portion <NUM> charged with the sealing material. As a result, the sealing material in the groove portion <NUM> is more likely to flow toward the inner peripheral wall <NUM> compared to the outer peripheral wall <NUM> when the insertion wall <NUM> is inserted into the groove portion <NUM> charged with the sealing material. Therefore, since the area of the inner peripheral region <NUM> is larger than the area of the outer peripheral region <NUM>, it is possible to further suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>.

Additionally, in the modified example of the brake fluid pressure control device <NUM> shown in <FIG>, the area of the inner peripheral region <NUM> is larger than the area of the outer peripheral region <NUM> due to an inclined portion provided as a flat surface on the inner peripheral portion of the tip of the insertion wall <NUM>. However, this shape is just an example.

<FIG> and <FIG> are views showing an example of another shape of the insertion wall in the modified example of the brake fluid pressure control device according to the embodiment of the invention. These drawings are views in which the modified example of the brake fluid pressure control device <NUM> is cut in the same cross-section as that of <FIG> and the same position as that of the A part of <FIG> is observed. Therefore, in these drawings, the left side of the paper is the outside of the housing <NUM> and the right side of the paper is the inside of the housing <NUM>. That is, in these drawings, the left side of the paper is the outside of the modified example of the brake fluid pressure control device <NUM>.

For example, as shown in <FIG>, even when an inclined portion is formed as a curved surface on the inner peripheral portion of the tip of the insertion wall <NUM>, the insertion region <NUM> can be formed in an asymmetrical shape with the center line <NUM> as the axis of symmetry and the area of the inner peripheral region <NUM> can be larger than the area of the outer peripheral region <NUM>. Additionally, in <FIG>, the inclined portion is formed as a curved surface to protrude toward the bottom portion <NUM> of the groove portion <NUM>, but the inclined portion may be formed as a curved surface to protrude toward the side opposite to the bottom portion <NUM> of the groove portion <NUM>. Even when the inclined portion is formed in this way, the insertion region <NUM> can be formed in an asymmetrical shape with the center line <NUM> as the axis of symmetry and the area of the inner peripheral region <NUM> can be larger than the area of the outer peripheral region <NUM>. Further, for example, as shown in <FIG>, even when at least one step portion is formed on the inner peripheral portion of the tip of the insertion wall <NUM>, the insertion region <NUM> can be formed in an asymmetrical shape with the center line <NUM> as the axis of symmetry and the area of the inner peripheral region <NUM> can be larger than the area of the outer peripheral region <NUM>. If the area of the inner peripheral region <NUM> is larger than the area of the outer peripheral region <NUM> regardless of the shape of the inner peripheral portion of the tip of the insertion wall <NUM>, the sealing material in the groove portion <NUM> easily flows toward the inner peripheral wall <NUM> when the insertion wall <NUM> is inserted into the groove portion <NUM> charged with the sealing material. Accordingly, it is possible to further suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>.

<FIG> is a main cross-sectional view showing the periphery of a groove portion of a main body portion of a housing in a modified example of the brake fluid pressure control device according to the embodiment of the invention. <FIG> is a view in which the modified example of the brake fluid pressure control device <NUM> is cut in the same cross-section as that of <FIG> and the same position as that of the A part of <FIG> is observed. Therefore, in <FIG>, the left side of the paper is the outside of the housing <NUM> and the right side of the paper is the inside of the housing <NUM>. That is, in <FIG>, the left side of the paper is the outside of the modified example of the brake fluid pressure control device <NUM>.

Further, <FIG> is a view in which the lid of the housing of the brake hydraulic pressure control device shown in <FIG> is viewed from the main body portion side of the housing. Additionally, in <FIG>, the shape of the opening portion of the groove portion <NUM> of the main body portion <NUM> is indicated by a two-dotted chain line which is an imaginary line.

The brake fluid pressure control device <NUM> preferably includes at least one of a first positioning portion <NUM> and a second positioning portion <NUM>.

The first positioning portion <NUM> is for positioning the main body portion <NUM> and the lid <NUM> of the housing <NUM> in the direction perpendicular to the first direction Y. When a space is formed both between the outer peripheral wall <NUM> and the insertion wall <NUM> and between the inner peripheral wall <NUM> and the insertion wall <NUM> when inserting the insertion wall <NUM> into the groove portion <NUM> charged with the sealing material, the amount of the sealing material flowing toward the outer peripheral wall <NUM> and the amount of the sealing material flowing toward the inner peripheral wall <NUM> vary when the insertion position of the insertion wall <NUM> to the groove portion <NUM> varies. Here, since the insertion position of the insertion wall <NUM> to the groove portion <NUM> is stable due to the first positioning portion <NUM>, the amount of the sealing material flowing toward the outer peripheral wall <NUM> is also stable. Therefore, since the first positioning portion <NUM> is provided, it is possible to further suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>.

Here, as shown in <FIG> and <FIG>, the first positioning portion <NUM> is preferably a protrusion and disposed between the outer peripheral wall <NUM> and the insertion wall <NUM>. Since the main body portion <NUM> and the lid <NUM> are positioned in the direction perpendicular to the first direction Y by using the outer peripheral wall <NUM> which is long in the first direction Y, the insertion position of the insertion wall <NUM> to the groove portion <NUM> is further stable. Accordingly, it is possible to further suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>. Further, when the first positioning portion <NUM> is a protrusion disposed between the outer peripheral wall <NUM> and the insertion wall <NUM>, the first positioning portion <NUM> is preferably fixed to the insertion wall <NUM> of the lid <NUM> as shown in <FIG> and <FIG>. When the first positioning portion <NUM> is fixed to the insertion wall <NUM> of the lid <NUM>, the first positioning portion <NUM> which serves as a barrier when charging the sealing material does not exist in the periphery of the groove portion <NUM> when the sealing material is charged into the groove portion <NUM> of the main body portion <NUM>. Therefore, since the charged amount of the sealing material at each position in the groove portion <NUM> is stable when the first positioning portion <NUM> is fixed to the insertion wall <NUM> of the lid <NUM>, it is possible to further suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>.

Additionally, the number of the protrusions serving as the first positioning portion <NUM> is not limited to the number shown in <FIG> and <FIG> and is arbitrary if the main body portion <NUM> and the lid <NUM> can be positioned in the direction perpendicular to the first direction Y. Further, the effect of the first positioning portion <NUM> is an effect which can be obtained regardless of whether the brake fluid pressure control device <NUM> includes the second positioning portion <NUM>.

The second positioning portion <NUM> is for positioning the main body portion <NUM> and the lid <NUM> of the housing <NUM> in the first direction Y. If the insertion depth of the insertion wall <NUM> to the groove portion <NUM> varies when the insertion wall <NUM> is inserted into the groove portion <NUM> charged with the sealing material, the amount of the sealing material flowing toward the outer peripheral wall <NUM> also varies. Here, since the insertion depth of the insertion wall <NUM> to the groove portion <NUM> is stable due to the second positioning portion <NUM>, the amount of the sealing material flowing toward the outer peripheral wall <NUM> is also stable. Therefore, since the second positioning portion <NUM> is provided, it is possible to further suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>.

Here, as shown in <FIG> and <FIG>, the second positioning portion <NUM> is preferably a protrusion and disposed between the end portion of the outer peripheral wall <NUM> and the lid <NUM>. Since the second positioning portion <NUM> is disposed at the corresponding position, the second positioning portion <NUM> serves as a wall portion which regulates the flow of the sealing material which starts to leak from the inside of the groove portion <NUM> to the outside of the outer peripheral wall <NUM>. Therefore, since the second positioning portion <NUM> is disposed at the corresponding position, it is possible to further suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>. Further, when the second positioning portion <NUM> is a protrusion which is disposed between the end portion of the outer peripheral wall <NUM> and the lid <NUM>, as shown in <FIG> and <FIG>, the second positioning portion <NUM> is preferably fixed to the lid <NUM> and contacts the end portion of the outer peripheral wall <NUM>. When the second positioning portion <NUM> is fixed to the lid <NUM>, the second positioning portion <NUM> serving as a barrier when charging the sealing material does not exist in the periphery of the groove portion <NUM> when the sealing material is charged into the groove portion <NUM> of the main body portion <NUM>. Therefore, since the charged amount of the sealing material at each position in the groove portion <NUM> is stable when the second positioning portion <NUM> is fixed to the lid <NUM>, it is possible to further suppress the sealing material from leaking to the outside of the brake fluid pressure control device <NUM>.

Additionally, the number of protrusions serving as the second positioning portion <NUM> is not limited to the number shown in <FIG> and <FIG> and is arbitrary if the main body portion <NUM> and the lid <NUM> can be positioned in the first direction Y. Further, the effect of the second positioning portion <NUM> is an effect which can be obtained regardless of whether the brake fluid pressure control device <NUM> includes the first positioning portion <NUM>.

Claim 1:
A brake fluid pressure control device (<NUM>) for a saddle-type vehicle (<NUM>), comprising:
a base body (<NUM>) to which a flow path (<NUM>) for a brake fluid is formed;
a coil (<NUM>) which is erected on the base body (<NUM>) and drives a hydraulic pressure adjusting valve (<NUM>) opening and closing the flow path (<NUM>);
a circuit board (<NUM>) which controls energization of the coil (<NUM>); and
a housing (<NUM>) which is connected to the base body (<NUM>) and covers the coil (<NUM>) and the circuit board (<NUM>),
wherein the housing (<NUM>) includes a main body portion (<NUM>) which is connected to the base body (<NUM>) and is provided with an opening portion (<NUM>), and a lid (<NUM>) which covers the opening portion (<NUM>) and is attached to the main body portion (<NUM>),
characterized in that
the main body portion (<NUM>) includes a groove portion (<NUM>) which is formed on an outer peripheral side of the opening portion (<NUM>) to open toward the lid (<NUM>),
wherein the lid (<NUM>) includes an insertion wall (<NUM>) which extends toward the main body portion (<NUM>) and is inserted into the groove portion (<NUM>),
wherein a gap between the groove portion (<NUM>) and the insertion wall (<NUM>) is sealed by a sealing material,
wherein the groove portion (<NUM>) includes a bottom portion (<NUM>), an outer peripheral wall (<NUM>) which constitutes an outer peripheral wall of the groove portion (<NUM>) and extends from the bottom portion (<NUM>) toward the lid (<NUM>), and an inner peripheral wall (<NUM>) which constitutes an inner peripheral wall of the groove portion (<NUM>) and extends from the bottom portion (<NUM>) toward the lid (<NUM>),
wherein a space (<NUM>) for storing the sealing material is formed between the outer peripheral wall (<NUM>) and the insertion wall (<NUM>) and between the inner peripheral wall (<NUM>) and the insertion wall (<NUM>), and
wherein when a facing direction between the main body portion (<NUM>) and the lid (<NUM>) is a first direction (Y), a length of the outer peripheral wall (<NUM>) in the first direction (Y) is longer than a length of the inner peripheral wall (<NUM>) in the first direction (Y) to suppress the sealing material from leaking to the outside of the brake fluid pressure control device (<NUM>) by storing the sealing material between the insertion wall (<NUM>) and the outer peripheral wall (<NUM>).