Hydraulic control unit and vehicle

Abstract

The present invention provides a hydraulic control unit for a vehicle, said hydraulic control unit being capable of better suppressing the intrusion of insects and the like into the inside of a housing via an air vent. A hydraulic control unit according to the present invention is a vehicle-mounted hydraulic control unit for a brake system that is capable of performing anti-lock brake control, said hydraulic control unit comprising a control board that controls a hydraulic control valve for opening and closing an internal flow passage connecting a wheel cylinder and a master cylinder, and a housing that accommodates the control board. The housing has formed therein an air vent connecting the inside and the outside of the housing and is provided with a metal mesh covering the air vent.

Description

Document Name

[0002]

Title of the Invention

[0003]

Technical Field

[0004]

。001

[0005] The present invention relates to a hydraulic control unit mounted on a vehicle and a vehicle equipped with the hydraulic control unit.

[0006]

Background Art

[0007]

。002

[0008] Conventional vehicles include those equipped with a hydraulic control unit that controls the pressure of the brake fluid in a hydraulic circuit filled with brake fluid. The hydraulic control unit, for example, increases or decreases the pressure of the brake fluid in the hydraulic circuit while the driver of the vehicle is operating an input part such as a brake lever, adjusts the braking force generated on the wheels, and executes antilock brake control (see, for example, Patent Document 1). Such a hydraulic control unit includes a control board. The control board controls a hydraulic adjustment valve that opens and closes an internal flow path that communicates a wheel cylinder and a master cylinder. Further, the hydraulic control unit includes a housing that houses the control board. An air vent that communicates the inside and outside of the housing is formed in the housing of the hydraulic control unit for the purpose of discharging heat emitted from the control board to the outside.

[0009]

Prior Art Documents

[0010]

Patent Documents

[0011]

〇003

[0012]

Patent Document 1

[0013]

Summary of the Invention

[0014]

Problems to be Solved by the Invention

[0015]

〇004

[0016] Vehicles are often parked and stopped outdoors. Therefore, it is desirable that the hydraulic control unit installed in the vehicle be able to prevent insects and other debris from entering the casing through the ventilation holes and affecting the control board.

[0017]

〇 0 0 5

[0018] The present invention was made against the backdrop of the above-mentioned problems, and its first objective is to provide a hydraulic control unit that can suppress the entry of insects and other creatures into the interior of the housing through the ventilation openings more effectively than conventional designs. The second objective of the present invention is to provide a vehicle equipped with such a hydraulic control unit.

[0019] [Means for solving the problem]

[0020]

〇 0 0 6

[0021] The hydraulic control unit according to the present invention is a hydraulic control unit for a brake system mounted on a vehicle and capable of performing antilock brake control, comprising a control board for controlling a hydraulic regulating valve that opens and closes an internal passage connecting a wheel cylinder and a master cylinder, and a housing for housing the control board, wherein the housing has a vent that connects the inside and outside of the housing, and is provided with a metal mesh that covers the vent.

[0022]

〇 0 0 7

[0023] Furthermore, the vehicle according to the present invention is equipped with a hydraulic control unit according to the present invention.

[0024] [Effects of the Invention]

[0025]

〇 0 0 8

[0026] The hydraulic control unit according to the present invention is equipped with a metal mesh that covers the vent. Therefore, the hydraulic control unit according to the present invention can suppress the entry of insects and other objects into the inside of the housing through the vent more effectively than conventional units.

[0027] [Brief explanation of the drawing]

[0028]

〇 0 0 9

[0029] [Figure 1] This figure shows the configuration of a vehicle equipped with a brake system having a hydraulic control unit according to an embodiment of the present invention. [Figure 2] This figure shows the configuration of a brake system having a hydraulic control unit according to an embodiment of the present invention.

[0030] [Figure 3] This is a partial cross-sectional view of a hydraulic control unit according to an embodiment of the present invention, viewed from the side.

[0031] [Figure 4] This is an enlarged view of the main part showing the area around the vent of a hydraulic control unit according to an embodiment of the present invention.

[0032] [Figure 5] This is a cross-sectional view showing the area around the vent of a modified example of a hydraulic control unit according to an embodiment of the present invention.

[0033] [Figure 6] This is a cross-sectional view showing the area around the vent of a modified example of a hydraulic control unit according to an embodiment of the present invention.

[0034] [Figure 7] This is a cross-sectional view showing the area around the vent of a modified example of a hydraulic control unit according to an embodiment of the present invention.

[0035] [Modes for carrying out the invention]

[0036] [0 0 1 0]

[0037] The hydraulic control unit and vehicle according to the present invention will be described below with reference to the drawings. In the following description, an example of the hydraulic control unit according to the present invention being mounted on a motorcycle, which is an example of a saddle-type vehicle, will be explained. However, the hydraulic control unit according to the present invention may be mounted on other saddle-type vehicles besides motorcycles. Other saddle-type vehicles besides motorcycles include, for example, bicycles (e.g., two-wheeled vehicles, three-wheeled vehicles, etc.), three-wheeled vehicles powered by at least one of an engine and an electric motor, and buggies. Furthermore, "bicycle" refers to any vehicle capable of propelling itself on the road by the force applied to the pedals. That is, bicycles include ordinary bicycles, electric assist bicycles, electric bicycles, etc. Also, "two-wheeled vehicle" or "three-wheeled vehicle" refers to a so-called motorcycle, and motorcycles include motorcycles, scooters, electric scooters, etc. Furthermore, the hydraulic control unit according to the present invention may be mounted on vehicles other than saddle-type vehicles, such as four-wheeled vehicles powered by at least one of an engine and an electric motor.

[0038] [0 0 1 1]

[0039] Furthermore, although the following describes an example in which the hydraulic control unit according to the present invention is employed in a brake system equipped with one hydraulic circuit, the number of hydraulic circuits in a brake system employing the hydraulic control unit according to the present invention is not limited to one. A brake system employing the hydraulic control unit according to the present invention may be equipped with two or more hydraulic circuits. [0 0 1 2]

[0040] Furthermore, the configurations and operations described below are merely examples, and the present invention is not limited to such configurations and operations. In addition, in each figure, the same or similar components or parts may be denoted by the same reference numerals, or the reference numerals may be omitted. Also, detailed structures may be simplified or omitted from the illustrations as appropriate.

[0041] [0 0 1 3]

[0042] Embodiment.

[0043] <Configuration and Operation of Vehicle Brake System>

[0044] FIG. 1 is a diagram showing the configuration of a vehicle equipped with a brake system including a hydraulic control unit according to an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of a brake system including a hydraulic control unit according to an embodiment of the present invention.

[0045]

[0014]

[0046] As shown in FIGS. 1 and 2, the brake system 10 is mounted on the vehicle 200. The vehicle 200 is, for example, a motorcycle which is a type of saddle-riding vehicle. The vehicle 200 includes a body 1, a handle 2 rotatably held on the body 1, a front wheel 3 rotatably held on the body 1 together with the handle 2, and a rear wheel 4 pivotally held on the body 1.

[0047]

[0015]

[0048] The brake system 1〇 includes a brake lever 11 and a hydraulic circuit 12 filled with brake fluid. The brake lever 11 is provided on the handle 2 and is operated by the driver's hand. The hydraulic circuit 12 generates a braking force corresponding to the operation amount of the brake lever 11 on a rotor 3a that rotates with the front wheel 3. A braking force corresponding to the operation amount of the brake pedal 13 is generated on a rotor 4a that rotates with the rear wheel 4. The brake pedal 13 is provided at the lower part of the body 1 and is operated by the driver's foot. The mechanism for generating a braking force corresponding to the operation amount of the brake pedal 13 may be a type of mechanism that generates a braking force by increasing the pressure of the brake fluid, or may be a type of mechanism that mechanically generates a braking force (for example, a type of mechanism that generates a braking force by generating tension in a wire, etc.).

[0049]

[0016]

[0050] Here, the brake lever 11 and brake pedal 13 are examples of brake input points. For example, a brake pedal other than the brake pedal 13 provided on the body 1 may be used as a brake input point instead of the brake lever 11. Also, for example, a brake lever other than the brake lever 11 provided on the handle 2 may be used as a brake input point instead of the brake pedal 13.

[0051] [ 0 0 1 7 ]

[0052] The hydraulic circuit 12 includes a master cylinder 21 having a piston (not shown), a reservoir 22 attached to the master cylinder 21, a brake caliper 23 having brake pads (not shown), and a wheel cylinder 24 that operates the brake pads (not shown) of the brake caliper 23.

[0053] [ 0 0 1 8 ]

[0054] The base 110 of the hydraulic control unit 100 has an internal flow path 40 that connects the wheel cylinder 24 and the master cylinder 21. Specifically, the internal flow path 40 is connected to the master cylinder 21 via a liquid pipe 15 (described later) and to the wheel cylinder 24 via a liquid pipe 16 (described later). In this embodiment, the base 110 has a main flow path 41 and a sub-flow path 42 as the internal flow path 40. The hydraulic control unit 100 also includes a hydraulic pressure regulating valve 25 that opens and closes the internal flow path 40. In this embodiment, the hydraulic control unit 100 includes a fill valve 26 and a release valve 2? as the hydraulic pressure regulating valve 25.

[0055] [ 0 0 1 9 ]

[0056] Specifically, in the hydraulic circuit 12, the master cylinder 21 and the wheel cylinder 24 are in communication via a fluid pipe 15 connected between the master cylinder 21 and the master cylinder port MP formed in the base 11〇, a main flow path 41 formed in the base 11〇, and a fluid pipe 16 connected between the wheel cylinder 24 and the wheel cylinder port WP formed in the base 11〇. In addition, the brake fluid from the wheel cylinder 24 is released via a sub-flow path 42 to a main flow path intermediate section 41a, which is an intermediate part of the main flow path 41.

[0057] [ 0 0 2 0 ]

[0058] A stop valve 26 is provided in the main flow path 41, in the region closer to the wheel cylinder 24 than the intermediate section 41a of the main flow path. The opening and closing operation of the stop valve 26 opens and closes the flow path portion of the main flow path 41 where the stop valve 26 is installed, thereby controlling the flow rate of brake fluid circulating in this region. The secondary flow path 42 is provided with, in order from the upstream side, a release valve 27, an accumulator 28 for storing brake fluid, and a pump 50. The opening and closing operation of the release valve 27 opens and closes the flow path portion of the secondary flow path 42 where the release valve 27 is installed, thereby controlling the flow rate of brake fluid circulating in this region. The pump 50 applies pressure to the brake fluid in the secondary flow path 42, moving the brake fluid. In other words, the pump 50 moves the brake fluid in the internal passage 40. Specifically, the pump 50 returns the brake fluid that has been released from the wheel cylinder 24 into the internal passage 40 to the master cylinder 21.

[0059] [ 0 0 2 1 ]

[0060] Furthermore, a master cylinder hydraulic pressure sensor 3〇 is provided in the region of the main flow path 41 on the master cylinder 21 side of the suction valve 26 to detect the hydraulic pressure of the brake fluid in the master cylinder 21. Also, a wheel cylinder hydraulic pressure sensor 31 is provided in the region of the main flow path 41 on the wheel cylinder 24 side of the suction valve 26 to detect the hydraulic pressure of the brake fluid in the wheel cylinder 24.

[0061] [ 0 0 2 2 ]

[0062] In other words, the main passage 41 connects the master cylinder port MP and the wheel cylinder port WP via the filling valve 26. The secondary passage 42 is defined as a passage that releases part or all of the brake fluid from the wheel cylinder 24 to the master cylinder 21 via the release valve 2?. That is, the secondary passage 42 also connects the master cylinder port MP and the wheel cylinder port WP.

[0063] [ 0 0 2 3 ]

[0064] The suction valve 26 is a solenoid valve that, for example, switches the flow of brake fluid at its installation location from open to closed when the system is energized from a non-energized state. The release valve 27 is a solenoid valve that, for example, switches the flow of brake fluid toward the accumulator 28 via its installation location from closed to open when the system is energized from a non-energized state.

[0065] [ 0 0 2 4 ]

[0066] The pump 50 of the hydraulic circuit 12 is driven by the motor 51. In other words, the motor 51 is the power source for the pump 50.

[0067] [ 0 0 2 5 ]

[0068] The hydraulic control unit 100 is composed of a base 110, various components provided on the base 110 (hydraulic pressure regulating valve 25, accumulator 28, master cylinder hydraulic pressure sensor 30, wheel cylinder hydraulic pressure sensor 31, pump 50, motor 51, etc.), and a control unit (ECU) 60.

[0069] [ 0 0 2 6 ]

[0070] The control device 60 controls the hydraulic pressure regulating valve 25 and the motor 51. The control device 60 may be a single unit or may be divided into multiple units. The control device 60 may be attached to the base 11〇 or to other components other than the base 11〇. Furthermore, part or all of the control device 60 may be composed of, for example, a microcontroller, a microprocessor unit, etc., or an updatable component such as firmware, or a program module executed by commands from a CPU, etc. In this embodiment, as described later, at least the part of the control device 6〇 that controls the hydraulic pressure regulating valve 25 is configured as a control board 61.

[0071] [ 0 0 2 7 ]

[0072] For example, under normal conditions, the control device 60 controls the hydraulic pressure regulating valve 25, which consists of the fill valve 26 and the release valve 27, to a de-energized state. In this state, when the brake lever 11 is operated, the piston (not shown) of the master cylinder 21 is pushed in, increasing the hydraulic pressure of the brake fluid in the wheel cylinder 24, and the brake pads (not shown) of the brake caliper 23 are pressed against the rotor 3a of the front wheel 3, thereby braking the front wheel 3.

[0073] [ 0 0 2 8 ]

[0074] The control device 60 receives the outputs from each sensor (master cylinder hydraulic pressure sensor 30, wheel cylinder hydraulic pressure sensor 31, wheel speed sensor, acceleration sensor, etc.). In response to these outputs, the control device 60 outputs commands that control the operation of the hydraulic pressure regulating valve 25 and the motor 51, thereby performing pressure reduction control, etc.

[0075] [ 0 0 2 9 ]

[0076] For example, if the control device 60 detects an excess or potential excess of brake fluid pressure in the wheel cylinder 24, it performs a pressure reduction control operation to reduce the brake fluid pressure in the wheel cylinder 24 of the hydraulic circuit 12. At that time, the control device 60 controls the fill valve 26 to be energized and the release valve 27 to be energized in the hydraulic circuit 12 while driving the motor 51. As a result, the brake fluid in the wheel cylinder 24 flows through the main passage 41 to the sub-passage 42, and the brake fluid pressure in the wheel cylinder 24 decreases. The brake fluid that has flowed from the wheel cylinder 24 to the sub-passage 42 then flows through the release valve 27 to the accumulator 28 and is stored in the accumulator 28. Furthermore, the brake fluid stored in the accumulator 28 is returned to the master cylinder 21 by a pump 50 driven by the motor 51. [0 0 3 0]

[0077] In other words, the hydraulic control unit 100 can control the hydraulic pressure of the brake fluid in the wheel cylinder 24 to perform pressure reduction control (in other words, anti-lock brake control) of the hydraulic circuit 12. In other words, a brake system 10 equipped with the hydraulic control unit 100 can control the hydraulic pressure of the brake fluid in the wheel cylinder 24 to perform anti-lock brake control. Note that some conventional hydraulic control units perform automatic pressure boosting control by pumping brake fluid from the master cylinder to the wheel cylinder. The hydraulic control unit 100 according to this embodiment may also be configured to perform such automatic pressure boosting control.

[0078] [ 0 0 3 1 ]

[0079] Configuration of the hydraulic control unit >

[0080] Figure 3 is a partial cross-sectional view of a hydraulic control unit according to an embodiment of the present invention, viewed from the side. Figure 4 is an enlarged view of the main part showing the area around the vent of the hydraulic control unit according to an embodiment of the present invention. Figure 4 is a view of the area around vents 1 and 2 in the direction of arrow A shown in Figure 3.

[0081] The hydraulic control unit 1〇〇 includes a housing 1〇1 that constitutes the outer casing. The housing 101 in this embodiment is composed of the base 11〇 and the housing 120 described above. The control board 61 described above, which controls the hydraulic regulating valve 25, is housed in the housing 1〇1.

[0082] [ 0 0 3 2 ]

[0083] The base body 11〇 is made of a metal such as an aluminum alloy and has a roughly rectangular shape. Each side of the base body 11〇 may be flat, include curved sections, or include steps. A hydraulic pressure regulating valve 25 and a motor 51 are mounted on side 11〇a of the base body 11〇. The hydraulic pressure regulating valve 25 and the motor 51 are covered by a housing 120.

[0084] [ 0 0 3 3 ]

[0085] The housing 120 is made of, for example, resin and has a roughly rectangular shape, for example, that covers the hydraulic regulating valve 25 and the motor 51. The sides of the housing 120 may be flat, include curved sections, or include steps. In this embodiment, the control board 61 is housed in this housing 120.

[0086] [ 0 0 3 4 ]

[0087] As described above, the control board 61 controls the hydraulic pressure regulating valve 25. Therefore, the control board 61 is electrically connected to the hydraulic pressure regulating valve 25. In this embodiment, the control board 61 is electrically connected to the hydraulic pressure regulating valve 25 at terminal 25a. In this embodiment, the control board 61 also controls the motor 51. Therefore, the control board 61 is electrically connected to the motor 51 as well. In this embodiment, the control board 61 is electrically connected to the motor 51 at terminal 51a.

[0088] [ 0 0 3 5 ]

[0089] During the operation of the hydraulic control unit 100, heat is emitted from the control board 61, etc. For this reason, the housing 101 has a vent 102 that connects the inside and outside of the housing 101, for purposes such as releasing the heat emitted from the control board 61 to the outside of the housing 101. Note that the position of the vent 102 is not limited to the positions shown in Figures 3 and 4. Specifically, the hydraulic control unit 100 is equipped with a connector (not shown) that is electrically connected to the control board 61. Signal lines and power supply lines, etc., are connected to the connector. The housing 120 of the housing 101 according to this embodiment is equipped with a protrusion 121 on which this connector (not shown) is provided. The vent 102 is formed on this protrusion 121. However, the vent 102 may be formed in a location other than the protrusion 121 on the housing 120. Also, for example, the vent 102 may be formed in the base 110.

[0090] [ 0 0 3 6 ]

[0091] Here, vehicle 200 is often parked and stopped outdoors. In other words, vehicle 200 is often parked and stopped in an environment where insects and other pests can easily enter the inside of housing 101 through the ventilation opening 102. When insects and other pests enter the inside of housing 101 through the ventilation opening 102, they may come into contact with the control board 61, potentially causing a short circuit or other damage to the control board 61. For this reason, it is desirable that the hydraulic control unit 100 can prevent insects and other pests that have entered the inside of housing 101 through the ventilation opening 102 from affecting the control board 61.

[0092] [ 0 0 3 7 ]

[0093] Therefore, the hydraulic control unit 100 according to this embodiment is equipped with a metal mesh 103 that covers the vent 102. The specific method of forming the mesh 103 is not particularly limited as long as it is made of metal. For example, the mesh 103 may be formed by weaving metal wires into a mesh. Alternatively, the mesh 103 may be formed by weaving strands of twisted metal fibers into a mesh. Alternatively, the mesh 103 may be formed by making multiple holes in a metal plate to create a mesh. Furthermore, the specific material of the mesh 103 is not particularly limited as long as it is made of metal. For example, the material of the mesh 103 may be stainless steel and aluminum alloy, etc., considering corrosion resistance, etc. Alternatively, the material of the mesh 103 may be copper and brass, etc., considering antibacterial properties, etc. Furthermore, the gaps formed in the mesh 103 are not particularly limited, as long as they are large enough to prevent insects or other creatures that might enter the housing 1〇1 from passing through.

[0094] [ 0 0 3 8 ]

[0095] The hydraulic control unit 1〇〇, configured in this way, ensures airflow through the vent 1〇2 using the mesh 1〇3, while suppressing the entry of insects and other creatures into the housing 1〇! through the vent 1〇2 more effectively than before. Therefore, the hydraulic control unit 100, configured in this way, can suppress the impact on the control board 61 by insects and other creatures that enter the housing 1〇1 through the vent 0102 more effectively than before.

[0096] [ 0 0 3 9 ]

[0097] Furthermore, since the mesh 103 is made of metal, it is durable in the environment in which the vehicle 200 is used. Also, because the mesh 103 is made of metal, the possibility of it being chewed through by insects is low. For this reason, even without performing maintenance, the hydraulic control unit 100 configured in this way can suppress the entry of insects and other creatures into the housing 100 through the vents 102 over a long period of time. As a result, the hydraulic control unit 100 configured in this way will have improved reliability from the driver and will improve driver satisfaction.

[0098] [ 0 0 4 0 ]

[0099] In this embodiment, the mesh 103 is fixed to the housing 101. That is, the mesh 103 is provided on the housing 101 in a state where it cannot be removed from the housing 101. Specifically, the mesh 103 is bonded to the housing 101. Note that the configuration for fixing the mesh 103 to the housing 101 is not limited to bonding. For example, the mesh 103 may be welded to the housing 101. Also, as in this embodiment, if the ventilation opening 102 is formed in the resin part of the housing 101, the outer periphery of the mesh 103 may be embedded in the resin part and the mesh 103 may be fixed to the housing 101. By fixing the mesh 103 to the housing 101, the mesh 103 becomes less likely to come off the housing 101 compared to when the mesh 103 is detachable. Therefore, fixing the mesh 103 to the housing 101 improves the reliability of the hydraulic control unit 100.

[0100] [ 0 0 4 1 ]

[0101] The effect of the hydraulic control unit >

[0102] The hydraulic control unit 100 according to this embodiment is a hydraulic control unit of a brake system 1〇 that is mounted on a vehicle 200 and capable of performing antilock brake control. The hydraulic control unit 1〇〇 includes a control board 61 that controls a hydraulic regulating valve 25 that opens and closes an internal passage 40 that connects a wheel cylinder 24 and a master cylinder 21, and a housing 1〇1 that houses the control board 61. The housing 1〇1 has a vent 102 that connects the inside and outside of the housing 1〇1. The hydraulic control unit 100 is also equipped with a metal mesh 103 that covers the vent 102.

[0103] [0 0 4 2] The hydraulic control unit 1〇〇 configured in this way can suppress the entry of insects and other creatures into the housing 101 through the vents 1 and 2 more effectively than before, thanks to the mesh 1〇3. Therefore, the hydraulic control unit 100 configured in this way can suppress the impact on the control board 61 by insects and other creatures that have entered the housing 101 through the vents 102 more effectively than before.

[0104] [ 0 0 4 3 ]

[0105] Preferably, the vehicle 200 is a saddle-type vehicle. Conventionally, saddle-type vehicles are often mounted with the hydraulic control unit exposed. For this reason, conventional hydraulic control units mounted on saddle-type vehicles are more susceptible to insect intrusion. For this reason, a hydraulic control unit 100 that can suppress the intrusion of insects and other insects into the interior of the housing 101 through the ventilation opening 102 more effectively than conventional designs is suitable as a hydraulic control unit to be mounted on a saddle-type vehicle.

[0106] [ 0 0 4 4 ]

[0107] <Variations>

[0108] The hydraulic control unit 100 may be coated with an insect repellent. The insect repellent is coated, for example, on the outer periphery of the vent 102 or on the mesh 103. A hydraulic control unit 100 coated with an insect repellent can suppress insects from gathering around the vent 102 compared to a hydraulic control unit 100 that is not coated with an insect repellent. Therefore, a hydraulic control unit 100 coated with an insect repellent can more effectively suppress insects from entering the inside of the housing 100 through the vent 102 compared to a hydraulic control unit 100 that is not coated with an insect repellent.

[0109] [ 0 0 4 5 ]

[0110] Figures 5 and 6 are cross-sectional views showing the area around the vent of a modified example of a hydraulic control unit according to an embodiment of the present invention.

[0111] The hydraulic control unit 100 shown in Figures 5 and 6 is equipped with a waterproof and breathable member 104 that covers the vent 102. The waterproof and breathable member 104 is a film-like material with numerous fine pores, and is made of, for example, Gore-Tex®. The waterproof and breathable member 104 has a high water pressure resistance such that water droplets cannot pass through unless the water pressure becomes excessively high. Therefore, water droplets cannot easily pass through the waterproof and breathable member 104, thus suppressing the intrusion of water from the outside into the housing 101. In addition, gases such as air can pass through the waterproof and breathable member 104. Therefore, the hydraulic control unit 100 shown in Figures 5 and 6 can ensure ventilation through the vent 102 while suppressing the intrusion of water and dust into the housing 101. Thus, the hydraulic control unit 100 shown in Figures 5 and 6 can further improve the reliability of the hydraulic control unit 100.

[0112] [ 0 0 4 6 ]

[0113] The arrangement of mesh 103 and waterproof / breathable member 104 is arbitrary. For example, as shown in Figure 5, mesh 103 may be positioned on the outside of housing 101 with respect to waterproof / breathable member 104. In other words, in the observation direction from the outside to the inside of housing 101 through ventilation opening 102, mesh 103 may be positioned in front of waterproof / breathable member 104. In Figures 5 and 6, the observation direction from the outside to the inside of housing 101 through ventilation opening 102 is the observation direction from the top of the page to the bottom of the page. Furthermore, as shown in Figure 6, for example, the mesh 103 may be positioned on the inside of the housing 101 with respect to the waterproof and breathable member 104. In other words, in the observation direction from the outside to the inside of the housing 101 through the ventilation opening 102, the mesh 103 may be positioned behind the waterproof and breathable member 104.

[0114] [ 0 0 4 7 ]

[0115] Here, it is preferable that the mesh 103 is positioned on the outside of the housing 101 with respect to the waterproof and breathable member 104. That is, it is preferable that the mesh 103 is positioned as shown in Figure 5. By positioning the mesh 103 and the waterproof and breathable member 104 as shown in Figure 5, it is possible to suppress the waterproof and breathable member 104 from being chewed through by insects, etc. Therefore, compared to the hydraulic control unit 100 with the mesh 103 and waterproof and breathable member 104 positioned as shown in Figure 5, the hydraulic control unit 100 can suppress the intrusion of water and dust into the housing 101 for a longer period of time, and the reliability of the hydraulic control unit 100 can be further improved.

[0116] [ 0 0 4 8 ]

[0117] Figure 7 is a cross-sectional view showing the area around the vent of a modified example of a hydraulic control unit according to an embodiment of the present invention.

[0118] In the hydraulic control unit 100 shown in Figure 7, the mesh 103 is detachably attached to the housing 101. Specifically, the housing 101 of the hydraulic control unit 100 shown in Figure 7 is equipped with a magnet 105 on the outer circumference of the vent 102. The metal mesh 103 is held detachably in place by the magnetic force of the magnet 105 in the housing 101. Note that the configuration of detachably attaching the mesh 103 to the housing 101 is not limited to the configuration shown in Figure 7. For example, the mesh 103 may be attached detachably to the housing 101 using a snap structure. Alternatively, for example, mesh 1〇3 may be attached to housing 1〇1 in a removable manner by screwing it to housing 1〇1.

[0119] [ 0 0 4 9 ]

[0120] For example, if the mesh 103 or the waterproof and breathable member 104 is damaged, the hydraulic control unit 100, in which the mesh 103 is detachably mounted on the housing 1〇1, can replace the mesh 103 or the waterproof and breathable member 104. Therefore, the hydraulic control unit 100, in which the mesh 103 is detachably mounted on the housing 1〇1, has improved maintainability.

[0121] [ 0 0 5 0 ]

[0122] Although the hydraulic control unit 100 according to this embodiment has been described above, the hydraulic control unit according to the present invention is not limited to the description of this embodiment. The hydraulic control unit according to the present invention may be implemented in only a part of this embodiment.

[0123] [Explanation of symbols]

[0124] [ 0 0 5 1 ]

[0125] ! Body, 2 Handle, 3 Front wheel, 3a Rotor, 4 Rear wheel, 4a Rotor, 1 0 Brake system, ! 1 Brake lever, 1 2 Hydraulic circuit, 1 3 Brake pedal, 1 5 Fluid pipe, 1 6 Fluid pipe, 2 1 Master cylinder, 2 2 Reservoir, 2 3 Brake caliper, 2 4 Wheel cylinder, 2 5 Hydraulic regulating valve, 2 5a Terminal, 2 6 Load valve, 2 7 Release valve, 2 8 Accumulator, 3 ○ Master cylinder hydraulic sensor, 3 1 Wheel cylinder hydraulic sensor, 4 ○ Internal flow path, 4 1 Main flow path, 4 1a Main flow path section, 4 2 Sub-flow path, 5 0 Pump, 5 1 Motor, 5 1a Terminal, 6 ○ Control device, 6 1 Control board, 1 〇 〇 Hydraulic control unit, 1 0 1 Housing, 1 0 2 Ventilation opening, 1 0 3 Mesh, 1 0 4 Waterproof and breathable material, 1 〇 5 Magnet, 1 1 〇 Base, 1 1 0 a Side, 1 2 0 Housing, 1 2 1 Protrusion, 2 0 0 Vehicle, MP Master cylinder port, WP Wheel cylinder port

Claims

【Document Name 】Claims

1. A hydraulic control unit (100) of a brake system (io) mounted on a vehicle (200) and capable of performing antilock brake control, A control board (61) controls a hydraulic pressure regulating valve (25) that opens and closes an internal passage (40) connecting the wheel cylinder (24) and the master cylinder (21), A housing (101) for the control board (61), Equipped with, The housing (101) has a ventilation opening (102) that connects the inside and outside of the housing (101). The ventilation opening (102) is covered by a metal mesh (103), Hydraulic control unit (100).

2. The vent (102) is covered by a waterproof and breathable member (104), A hydraulic control unit according to claim 1 (100).

3. The mesh (103) is positioned on the outside of the housing (1〇1) with reference to the waterproof and breathable member (104). Hydraulic control unit according to claim 2 (1 0 0) 〇

4. The mesh (103) is provided in the housing (101) in a removable manner, as described in any one of claims 1 to 3, for the hydraulic control unit (100) according to claim 1 to 3.

5. The mesh (103) is fixed to the housing (101). Hydraulic control unit according to any one of claims 1 to 3 (100)

6. A vehicle (200) equipped with a hydraulic control unit (100) according to any one of claims 1 to 3. [Claim?] The aforementioned vehicle (200) is a saddle-type vehicle. Vehicle according to claim 6 (200)

Images