Brake hydraulic control device and method for manufacturing brake hydraulic control device

Abstract

The present invention provides a brake fluid control device for a vehicle that can reduce manufacturing costs compared to the past. The brake fluid control device of the present invention is used for a vehicle, and comprises a substrate having a flow path for brake fluid, a motor as a driving source of a pump device provided in the flow path, a control substrate of a control device for controlling the motor, and a shell for accommodating the control substrate, wherein the shell comprises a main body having an opening formed in an area facing the control substrate and holding the control substrate, and a cover for blocking the opening, wherein the cover has a coating surplus portion coated with a silicon-based sealing material in a range facing the edge of the opening of the main body before the cover blocks the opening, and the silicon-based sealing material seals the area between the edge and the cover.

Description

Technical Field

[0001] The present invention relates to a brake hydraulic pressure control device for a vehicle and a method for manufacturing the brake hydraulic pressure control device. Background Art

[0002] A brake fluid control device for actuating an anti-lock brake of a vehicle brake system is known. The brake fluid control device increases or decreases the pressure of the brake fluid in the brake fluid circuit to adjust the braking force generated on the wheels when a vehicle passenger operates an input unit such as a brake lever. Such a brake fluid control device includes a flow path constituting a part of the brake fluid circuit, a pump device for pressurizing the brake fluid in the brake fluid circuit, and a control device for controlling the pump device, which are unitized (for example, see Patent Document 1).

[0003] Specifically, the unitized brake fluid control device includes a base body having a flow path of brake fluid, a motor driving a pump device provided in the flow path of brake fluid, a control substrate of a controller controlling the motor, and a shell accommodating the control substrate. The shell includes a main body portion that holds the control substrate and has an opening formed in a region facing the control substrate, and a cover portion that blocks the opening of the main body portion.

[0004] The conventional brake fluid pressure control device constructed in this way is assembled through the following steps. Specifically, first, the control substrate is accommodated in the main body through the opening of the main body of the case so that the main body holds the control substrate. Then, the opening of the main body is closed by the cover.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-015077.

[0006] The main body contains the control substrate, so it is necessary to prevent moisture from entering the main body from between the edge of the opening of the main body and the cover. Therefore, in the conventional brake fluid control device, the edge of the opening of the main body and the cover are sealed as follows. Specifically, after the main body holds the control substrate, a silicon-based sealing material is applied to the edge of the opening of the main body. Thereafter, the opening of the main body is blocked by the cover.

[0007] Therefore, in the conventional brake fluid control device, if the coating of the silicon-based sealing material to the edge of the opening of the main body fails, for example, the main body and the control substrate to which the silicon-based sealing material is attached have to be discarded. In addition, if the main body accommodates parts other than the control substrate, the parts also have to be discarded. In addition, after the main body of the base and the shell are assembled, in the assembly process of coating the silicon-based sealing material to the edge of the opening of the main body, if the coating of the silicon-based sealing material to the edge of the opening of the main body fails, the base and the parts mounted on the base also have to be discarded.

[0008] As described above, in the conventional brake fluid pressure control device, when the coating of the silicon-based sealing material fails, a large number of parts are discarded, which has a problem of increasing the manufacturing cost. Summary of the invention

[0009] The present invention has been made against the background of the above problems, and an object of the present invention is to obtain a brake fluid pressure control device for a vehicle that can reduce manufacturing costs compared with the related art. In addition, an object of the present invention is to obtain a method for manufacturing such a brake fluid pressure control device for a vehicle.

[0010] The brake hydraulic control device of the present invention is used for a vehicle, and comprises a substrate forming a flow path for brake fluid, a motor serving as a driving source for a pump device arranged in the aforementioned flow path, a control substrate of a control device for controlling the aforementioned motor, and a shell accommodating the aforementioned control substrate, wherein the aforementioned shell comprises a main body portion which holds the aforementioned control substrate and forms an opening portion in an area facing the control substrate, and a cover portion which blocks the aforementioned opening portion, and is characterized in that the aforementioned cover portion has a coating surplus portion coated with a silicon-based sealing material in a range facing an edge portion of the aforementioned opening portion of the aforementioned main body portion before the cover portion blocks the aforementioned opening portion, and the aforementioned edge portion and the aforementioned cover portion are sealed by the aforementioned silicon-based sealing material.

[0011] In addition, the manufacturing method of the brake hydraulic control device of the present invention is a manufacturing method of the brake hydraulic control device for a vehicle, the aforementioned brake hydraulic control device includes a substrate forming a flow path of brake fluid, a motor as a driving source of a pump device arranged in the aforementioned flow path, a control substrate of a control device that controls the aforementioned motor, and a shell that accommodates the aforementioned control substrate, the aforementioned shell includes a main body that holds the aforementioned control substrate and forms an opening in a region facing the control substrate, and a cover that blocks the aforementioned opening. The manufacturing method of the aforementioned brake hydraulic control device is characterized in that the aforementioned cover has a coating surplus portion coated with a silicon-based sealing material in a range facing the edge portion of the aforementioned opening of the aforementioned main body in a state where the cover blocks the aforementioned opening. The manufacturing method of the aforementioned brake hydraulic control device includes a sealing material coating step and a sealing step. In the aforementioned sealing material coating step, the aforementioned silicon-based sealing material is coated on the aforementioned coating surplus portion in a state before the aforementioned cover blocks the aforementioned opening. In the aforementioned sealing step, after the aforementioned sealing material coating step, the aforementioned opening is blocked by means of the aforementioned cover, and the space between the aforementioned edge portion and the aforementioned cover is sealed by means of the aforementioned silicon-based sealing material.

[0012] Effects of the Invention

[0013] In the brake hydraulic control device of the present invention, the cover portion of the opening portion of the main body portion of the shell is blocked, and has a coating surplus portion coated with a silicon-based sealing material before the opening portion of the main body portion is blocked. That is, in the brake hydraulic control device of the present invention, when the edge portion of the opening portion of the main body portion and the cover portion are sealed with the help of the silicon-based sealing material, the silicon-based sealing material is coated on the coating surplus portion of the cover portion, and the opening portion of the main body portion holding the control substrate is blocked with the help of the cover portion coated with the silicon-based sealing material. Therefore, in the brake hydraulic control device of the present invention, in the event that the coating of the silicon-based sealing material fails, the only discarded part is the cover portion. Therefore, the brake hydraulic control device of the present invention can suppress the manufacturing cost compared with the past. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a diagram showing the structure of a vehicle equipped with a brake system according to an embodiment of the present invention.

[0015] Figure 2 It is a diagram showing the configuration of a brake system according to an embodiment of the present invention.

[0016] Figure 3 It is a perspective view showing a unitized portion of the brake fluid pressure control device according to the embodiment of the present invention.

[0017] Figure 4 It is an exploded perspective view showing a unitized portion of the brake fluid pressure control device according to the embodiment of the present invention.

[0018] Figure 5 It is a perspective view showing a cover portion of a case of the brake fluid pressure control device according to the embodiment of the present invention.

[0019] Figure 6 This is a partial cross-sectional view of a unitized portion of the brake fluid pressure device according to the embodiment of the present invention as seen from the side.

[0020] Figure 7 yes Figure 6 Enlarged view of part A.

[0021] Figure 8 This is a diagram showing another example of the case of the brake fluid pressure control device according to the embodiment of the present invention, and is an enlarged view of the main parts showing the coating margin portion of the cover portion and the periphery of the edge portion of the opening portion of the main body portion.

[0022] Fig. 9 This is a diagram showing another example of the case of the brake fluid pressure control device according to the embodiment of the present invention, and is an enlarged view of the main parts showing the coating margin portion of the cover portion and the periphery of the edge portion of the opening portion of the main body portion.

[0023] Fig.10This is a diagram showing another example of the case of the brake fluid pressure control device according to the embodiment of the present invention, and is an enlarged view of the main parts showing the coating margin portion of the cover portion and the periphery of the edge portion of the opening portion of the main body portion.

[0024] Fig.11 This is a diagram showing another example of the case of the brake fluid pressure control device according to the embodiment of the present invention, and is an enlarged view of the main parts showing the coating margin portion of the cover portion and the periphery of the edge portion of the opening portion of the main body portion.

[0025] Fig.12 1 is a flowchart showing a method for manufacturing a brake fluid pressure control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] Hereinafter, the present invention will be described with reference to the accompanying drawings.

[0027] In addition, the following describes a case where the brake hydraulic control device of the present invention is used for an automatic two-wheeled vehicle, but the brake hydraulic control device of the present invention can also be used for other vehicles other than automatic two-wheeled vehicles. Other vehicles of automatic two-wheeled vehicles refer to, for example, bicycles, automatic three-wheeled vehicles, and automatic four-wheeled vehicles that use at least one of an engine and an electric motor as a driving source. In addition, a bicycle means all vehicles that can be propelled on the road by the pedal force applied to the pedal. That is, bicycles include ordinary bicycles, electric-assisted bicycles, electric bicycles, etc. In addition, an automatic two-wheeled vehicle or an automatic three-wheeled vehicle means a so-called motorcycle, and a motorcycle includes a bicycle (オートバイ), a scooter (スクーター), an electric scooter, etc. In addition, the following describes a case where the brake hydraulic control device has two systems of hydraulic circuits, but the number of hydraulic circuits of the brake hydraulic control device is not limited to two systems. The brake hydraulic control device may have only one system of hydraulic circuits, and may also have three or more systems of hydraulic circuits.

[0028] In addition, the structure, operation, etc. described below are examples, and the brake fluid pressure control device of the present invention is not limited to such structure, operation, etc. In addition, in each figure, the same reference numerals may be marked for the same or similar components or parts, or the reference numerals may be omitted. In addition, the detailed structure may be appropriately simplified or omitted.

[0029] Implementation method.

[0030] A vehicle brake system including the brake fluid pressure control device according to the present embodiment will be described below.

[0031] <Structure and operation of vehicle brake system>

[0032] The structure and operation of the brake system according to the present embodiment will be described.

[0033] Figure 1 It is a diagram showing the structure of a vehicle equipped with a brake system according to an embodiment of the present invention. Figure 2 It is a diagram showing the configuration of a brake system according to an embodiment of the present invention.

[0034] like Figure 1 and Figure 2 As shown, the brake system 10 is mounted on a vehicle 100, which is a motorcycle. The vehicle 100 includes a vehicle body 1, a handlebar 2 rotatably supported on the vehicle body 1, a front wheel 3 rotatably supported on the vehicle body 1 together with the handlebar 2, and a rear wheel 4 rotatably supported on the vehicle body 1.

[0035] The brake system 10 includes a brake lever 11, a first hydraulic circuit 12 filled with brake fluid, a brake pedal 13, and a second hydraulic circuit 14 filled with brake fluid. The brake lever 11 is provided on the handlebar 2 and is operated by the user's hand. The first hydraulic circuit 12 causes the rotor 3a rotating together with the front wheel 3 to generate a braking force corresponding to the amount of operation of the brake lever 11. The brake pedal 13 is provided at the lower part of the vehicle body 1 and is operated by the user's foot. The second hydraulic circuit 14 causes the rotor 4a rotating together with the rear wheel 4 to generate a braking force corresponding to the amount of operation of the brake pedal 13.

[0036] In addition, the brake lever 11 and the brake pedal 13 are examples of a brake input unit. For example, as a brake input unit replacing the brake lever 11, a brake pedal other than the brake pedal 13 provided on the vehicle body 1 may be used. In addition, for example, as a brake input unit replacing the brake pedal 13, a brake lever other than the brake lever 11 provided on the handlebar 2 may be used. In addition, the first hydraulic circuit 12 may cause the rotor 4a rotating together with the rear wheel 4 to generate a braking force corresponding to the amount of operation of the brake lever 11 or the amount of operation of the brake pedal other than the brake pedal 13 provided on the vehicle body 1. In addition, the second hydraulic circuit 14 may cause the rotor 3a rotating together with the front wheel 3 to generate a braking force corresponding to the amount of operation of the brake pedal 13 or the amount of operation of the brake lever other than the brake lever 11 provided on the handlebar 2.

[0037] The first hydraulic circuit 12 and the second hydraulic circuit 14 have the same structure. Therefore, the structure of the first hydraulic circuit 12 will be described below as a representative.

[0038] The first hydraulic circuit 12 includes a master cylinder 21 having a built-in piston (not shown), a reservoir 22 attached to the master cylinder 21, a brake caliper 23 held on the vehicle body 1 and having a brake pad (not shown), and a wheel cylinder 24 for actuating the brake pad (not shown) of the brake caliper 23.

[0039] In the first hydraulic circuit 12, the master cylinder 21 and the wheel cylinder 24 are connected via a fluid pipe connected between the master cylinder 21 and the master cylinder port MP formed on the base 61, a main flow path 25 formed on the base 61, and a fluid pipe connected between the wheel cylinder 24 and the wheel cylinder port WP formed on the base 61. In addition, a secondary flow path 26 is formed on the base 61. The brake fluid of the wheel cylinder 24 is discharged to the middle part of the main flow path 25a which is the middle part of the main flow path 25 via the secondary flow path 26. In addition, a booster flow path 27 is formed on the base 61. The brake fluid of the master cylinder 21 is supplied to the middle part of the secondary flow path 26a which is the middle part of the secondary flow path 26 via the booster flow path 27.

[0040] An inlet valve 28 is provided in a region of the main flow path 25 that is closer to the wheel cylinder 24 than the main flow path midway portion 25a. The flow rate of the brake fluid flowing in this region is controlled by the opening and closing action of the inlet valve 28. An outlet valve 29 and an accumulator 30 for storing brake fluid are provided in order from the upstream side in a region of the secondary flow path 26 that is closer to the upstream side than the secondary flow path midway portion 26a. The flow rate of the brake fluid flowing in this region is controlled by the opening and closing action of the outlet valve 29. In addition, a pump device 31 is provided in a region of the secondary flow path 26 that is closer to the downstream side than the secondary flow path midway portion 26a. A switching valve 32 is provided in a region of the main flow path 25 that is closer to the master pressure cylinder 21 than the main flow path midway portion 25a. The flow rate of the brake fluid flowing in this region is controlled by the opening and closing action of the switching valve 32. A booster valve 33 is provided in the booster flow path 27. The flow rate of the brake fluid flowing in the booster flow path 27 is controlled by the opening and closing action of the booster valve 33.

[0041] In addition, a master cylinder hydraulic pressure sensor 34 for detecting the hydraulic pressure of the brake fluid in the master cylinder 21 is provided in an area of ​​the main flow path 25 that is closer to the master cylinder 21 than the switching valve 32. In addition, a wheel cylinder hydraulic pressure sensor 35 for detecting the hydraulic pressure of the brake fluid in the wheel cylinder 24 is provided in an area of ​​the main flow path 25 that is closer to the wheel cylinder 24 than the inlet valve 28.

[0042] That is, the main flow path 25 connects the master cylinder port MP and the wheel cylinder port WP via the inlet valve 28. In addition, the secondary flow path 26 is defined as a part or all of the flow path for discharging the brake fluid of the wheel cylinder 24 to the master cylinder 21 via the outlet valve 29. In addition, the booster flow path 27 is defined as a part or all of the flow path for supplying the brake fluid of the master cylinder 21 to the upstream side of the pump device 31 of the secondary flow path 26 via the booster valve 33.

[0043] The inlet valve 28 is, for example, a solenoid valve that switches the flow of the brake fluid at the position where it is installed from open to closed when changing from a non-energized state to an energized state. The outlet valve 29 is, for example, a solenoid valve that switches the flow of the brake fluid from closed to open through the position where it is installed to the auxiliary flow path midway portion 26a when changing from a non-energized state to an energized state. The switching valve 32 is, for example, a solenoid valve that switches the flow of the brake fluid at the position where it is installed from open to closed when changing from a non-energized state to an energized state. The booster valve 33 is, for example, a solenoid valve that switches the flow of the brake fluid from closed to open through the position where it is installed to the auxiliary flow path midway portion 26a when changing from a non-energized state to an energized state.

[0044] The pump device 31 of the first hydraulic circuit 12 and the pump device 31 of the second hydraulic circuit 14 are driven by a common motor 40 .

[0045] The brake hydraulic control device 60 is composed of a base 61, various components arranged on the base 61 (inlet valve 28, outlet valve 29, accumulator 30, pump device 31, switching valve 32, boost valve 33, master pressure cylinder hydraulic sensor 34, wheel cylinder hydraulic sensor 35, motor 40, etc.), and a control device (ECU) 50.

[0046] The control device 50 may be one or more. The control device 50 may be mounted on the base 61 or other components other than the base 61. A part or all of the control device 50 may be composed of, for example, a personal computer, a microprocessor unit, etc., or may be composed of an updateable structure such as firmware, or may be a program module executed according to instructions from a CPU, etc. As described later, in the brake fluid pressure control device 60 of the present embodiment, at least a part of the control device 50 is composed of a control substrate 51.

[0047] For example, in a normal state, the inlet valve 28, the outlet valve 29, the switching valve 32, and the pressure-increasing valve 33 are controlled to be in a non-energized state by the control device 50. In this state, when the brake lever 11 is operated, the piston (not shown) of the master cylinder 21 is pushed in the first hydraulic circuit 12, the hydraulic pressure of the brake fluid in the wheel cylinder 24 is increased, and the brake pad (not shown) of the brake caliper 23 is pressed against the rotor 3a of the front wheel 3, and the front wheel 3 is braked. In addition, when the brake pedal 13 is operated, the piston (not shown) of the master cylinder 21 is pushed in the second hydraulic circuit 14, the hydraulic pressure of the brake fluid in the wheel cylinder 24 is increased, and the brake pad (not shown) of the brake caliper 23 is pressed against the rotor 4a of the rear wheel 4, and the rear wheel 4 is braked.

[0048] The outputs of the sensors (master cylinder hydraulic pressure sensor 34, wheel cylinder hydraulic pressure sensor 35, wheel speed sensor, acceleration sensor, etc.) are input to the control device 50. Based on the outputs, the control device 50 outputs commands for managing the actions of the motor 40, valves, etc., and performs pressure reduction control actions, pressure increase control actions, etc.

[0049] For example, when the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic circuit 12 is excessive or there is a possibility of excessive pressure, the control device 50 performs an operation to reduce the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic circuit 12. At this time, the control device 50 controls the inlet valve 28 to be energized, the outlet valve 29 to be energized, the switching valve 32 to be de-energized, and the pressure boosting valve 33 to be de-energized in the first hydraulic circuit 12, and drives the motor 40. In addition, when the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic circuit 14 is excessive or there is a possibility of excessive pressure, the control device 50 performs an operation to reduce the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic circuit 14. At this time, the control device 50 controls the inlet valve 28 to be energized, the outlet valve 29 to be energized, the switching valve 32 to be de-energized, and the pressure boosting valve 33 to be de-energized in the second hydraulic circuit 14, and drives the motor 40.

[0050] In addition, for example, when the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic circuit 12 is insufficient or there is a possibility of insufficient, the control device 50 performs an operation to increase the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic circuit 12. At this time, the control device 50 controls the inlet valve 28 to be in a non-energized state, the outlet valve 29 to be in a non-energized state, the switching valve 32 to be in an energized state, and the pressure-increasing valve 33 to be in an energized state in the first hydraulic circuit 12, and drives the motor 40. In addition, when the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic circuit 14 is insufficient or there is a possibility of insufficient, the control device 50 performs an operation to increase the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic circuit 14. At this time, the control device 50 controls the inlet valve 28 to be in a non-energized state, the outlet valve 29 to be in a non-energized state, the switching valve 32 to be in an energized state, and the pressure-increasing valve 33 to be in an energized state in the second hydraulic circuit 14, and drives the motor 40.

[0051] That is, the brake fluid pressure control device 60 can control the fluid pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic circuit 12 to perform the anti-lock braking action of the first hydraulic circuit 12. In addition, the brake fluid pressure control device 60 can control the fluid pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic circuit 14 to perform the anti-lock braking action of the second hydraulic circuit 14. In addition, the brake fluid pressure control device 60 can control the fluid pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic circuit 12 to perform the automatic pressure-increasing action of the first hydraulic circuit 12. In addition, the brake fluid pressure control device 60 can control the fluid pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic circuit 14 to perform the automatic pressure-increasing action of the second hydraulic circuit 14.

[0052] <Structure of brake hydraulic pressure control device>

[0053] The base body 61 of the brake fluid pressure control device 60, the motor 40, and the control substrate 51 of the control device 50 are unitized. In addition, in the present embodiment, each component (the inlet valve 28, the outlet valve 29, the accumulator 30, the pump device 31, the switching valve 32, the booster valve 33, the master cylinder fluid pressure sensor 34, the wheel cylinder fluid pressure sensor 35, etc.) other than the motor 40 provided on the base body 61 is also unitized with the base body 61 and the control substrate 51. The structure of the unitized portion of the brake fluid pressure control device 60 will be described below.

[0054] Figure 3 It is a perspective view showing a unitized portion of the brake fluid pressure control device according to the embodiment of the present invention. Figure 4 It is an exploded perspective view showing a unitized portion of the brake fluid pressure control device according to the embodiment of the present invention. Figure 5 It is a perspective view showing a cover portion of a case of the brake fluid pressure control device according to the embodiment of the present invention. Figure 6 This is a partial cross-sectional view of a unitized portion of a brake fluid pressure device according to an embodiment of the present invention as viewed from the side. Figure 7 yes Figure 6 A magnified view of part A. In addition, Figure 4 The state before the cover portion 80 of the case 62 of the brake fluid pressure control device 60 is mounted on the main body portion 70 of the case 62 is shown. Figure 5 80 is a perspective view of the cover 80 as viewed from the side where the cover 80 is mounted on the main body 70. In other words, Figure 5 Yes Figure 4 The cover 80 shown is Figure 4 Figure viewed from the bottom side of the paper.

[0055] The base 61 is made of metal such as aluminum and has a substantially rectangular parallelepiped shape. A housing 62 described below is attached to one surface of the base 61. Each surface of the base 61 may include a step portion or a curved surface portion.

[0056] like Figure 6 As shown, the motor 40 is mounted on the base 61. An eccentric body 42 is mounted on the output shaft 41 of the motor 40 so as to rotate together with the output shaft 41 of the motor 40. When the eccentric body 42 rotates, the piston of the pump device 31 pushed by the outer peripheral surface of the eccentric body 42 reciprocates, thereby conveying the brake fluid from the suction side of the pump device 31 to the discharge side.

[0057] In addition, the component to which the motor 40 is mounted is not limited to the base 61. For example, the motor 40 may be mounted on the main body 70 of the housing 62 described later. Figure 6 As shown, in this embodiment, the motor 40 is arranged in a space surrounded by the base 61 and the shell 62 in a state where the base 61 and the shell 62 are fixed. However, the arrangement structure of the motor 40 is not limited to this structure. For example, the motor 40 may be installed on the opposite surface of the base 61 to the installation surface of the shell 62.

[0058] The shell 62 is formed of, for example, a resin, and is, for example, in a substantially rectangular parallelepiped shape. The shell 62 accommodates the control substrate 51. In addition, each surface of the shell 62 may also include a step portion, and further, may include a curved surface portion. The shell 62 includes a main body 70 and a cover 80. The main body 70 is a component mounted on the base 61, and is, for example, in a substantially rectangular parallelepiped shape. In addition, the main body 70 holds the control substrate 51 inside. The holding structure of the control substrate 51 of the main body 70 is not particularly limited. In the present embodiment, the control substrate 51 is fixed to the pin 73 fixed to the main body 70. That is, the control substrate 51 is fixed to the main body 70 via the pin 73. In addition, the control substrate 51 may also be directly fixed to the main body 70. In addition, the control substrate 51 is electrically connected to the motor 40 via the connection terminal 43. That is, the control substrate 51 is energized to the motor 40 via the connection terminal 43.

[0059] In the main body 70, an opening portion 71 is formed in a region facing the control substrate 51. The control substrate 51 is received in the main body 70 from the opening portion 71 and is held in the main body 70. The opening portion 71 is formed, for example, on the opposite side of the mounting surface of the base 61 of the main body 70. And, the opening portion 71 of the main body 70 is blocked by the cover 80. In addition, in the present embodiment, the main body 70 and the cover 80 are fixed by inserting the engaging protrusion 74 of the main body 70 into the engaging recess 82 of the cover 80. However, this is an example of a fixing structure of the main body 70 and the cover 80. For example, the main body 70 and the cover 80 may be fixed by inserting the engaging protrusion of the cover 80 into the engaging recess of the main body 70. In addition, for example, the main body 70 and the cover 80 may be fixed by screwing.

[0060] Here, since the control substrate 51 is housed in the main body 70, it is necessary to suppress the intrusion of moisture into the main body 70 from between the edge 72 of the opening 71 of the main body 70 and the cover 80. Therefore, the edge 72 of the opening 71 of the main body 70 and the cover 80 are sealed by the silicon-based sealing material 90. The silicon-based sealing material 90 is a sealing material mainly composed of silicon.

[0061] Specifically, the cover 80 has a coating surplus portion (coating portion) 81 in a range facing the edge portion 72 of the opening 71 of the main body 70, to which the silicon-based sealing material 90 is applied before the cover 80 blocks the opening 71. That is, in the brake fluid pressure control device 60 of the present embodiment, when the silicon-based sealing material 90 is used to seal the edge portion 72 of the opening 71 of the main body 70 and the cover 80, the silicon-based sealing material 90 is applied to the coating surplus portion 81 of the cover 80, and the opening 71 of the main body 70 holding the control substrate 51 is blocked by the cover 80 coated with the silicon-based sealing material 90. In addition, in the present embodiment, the edge portion 72 of the opening 71 is in a quadrilateral frame shape. Therefore, the coating surplus portion 81 is also in a quadrilateral frame shape corresponding to the shape of the edge portion 72 of the opening 71.

[0062] In addition, in the present embodiment, a groove 83 is formed in the coating margin portion 81. The groove 83 is formed into a quadrilateral ring shape corresponding to the shape of the edge portion 72 of the opening portion 71. In addition, in the present embodiment, the edge portion 72 of the opening portion 71 has a convex portion 75 inserted into the groove 83. The convex portion 75 is in a quadrilateral frame shape corresponding to the shape of the groove 83. However, the shapes of the coating margin portion 81 and the edge portion 72 of the opening portion 71 described here are only examples. The following introduces several other examples of the shapes of the coating margin portion 81 and the edge portion 72 of the opening portion 71.

[0063] Figure 8 1 is a diagram showing another example of a housing of a brake fluid pressure control device according to an embodiment of the present invention, and is an enlarged view of the main parts showing the coating margin portion of the cover portion and the periphery of the edge portion of the opening portion of the main body portion. Figure 8 is with Figure 7 A diagram showing the periphery of the coating margin portion 81 of the cover portion 80 and the edge portion 72 of the opening portion 71 of the main body portion 70 as another example of the case 62 observed in the same observation direction and observation range.

[0064] exist Figure 8 The coating margin portion 81 of the cover portion 80 shown in FIG. Figure 7 The coating margin portion 81 of the cover portion 80 shown in FIG. 1 is similarly formed with a groove 83. Figure 8 The range where the edge portion 72 of the opening portion 71 of the main body portion 70 faces the groove 83 is a flat surface.

[0065] Fig. 9 1 is a diagram showing another example of a housing of a brake fluid pressure control device according to an embodiment of the present invention, and is an enlarged view of the main parts showing the coating margin portion of the cover portion and the periphery of the edge portion of the opening portion of the main body portion. Fig. 9 is with Figure 7 A diagram showing the periphery of the coating margin portion 81 of the cover portion 80 and the edge portion 72 of the opening portion 71 of the main body portion 70 as another example of the case 62 observed in the same observation direction and observation range.

[0066] Fig. 9 The coating margin portion 81 of the cover portion 80 shown is a flat surface. Fig. 9 The range where the edge portion 72 of the opening 71 of the main body 70 faces the coating margin portion 81 is a flat surface.

[0067] Fig.10 1 is a diagram showing another example of a housing of a brake fluid pressure control device according to an embodiment of the present invention, and is an enlarged view of the main parts showing the coating margin portion of the cover portion and the periphery of the edge portion of the opening portion of the main body portion. Fig.10 is with Figure 7 A diagram showing the periphery of the coating margin portion 81 of the cover portion 80 and the edge portion 72 of the opening portion 71 of the main body portion 70 as another example of the case 62 observed in the same observation direction and observation range.

[0068] Fig.10 The coating margin portion 81 of the cover portion 80 shown is a flat surface. Fig.10 The edge portion 72 of the opening portion 71 of the main body portion 70 shown in the figure has a groove 76 formed in a range facing the coating margin portion 81. The groove 76 is formed in a quadrilateral ring shape corresponding to the shape of the coating margin portion 81.

[0069] Fig.11 1 is a diagram showing another example of a housing of a brake fluid pressure control device according to an embodiment of the present invention, and is an enlarged view of the main parts showing the coating margin portion of the cover portion and the periphery of the edge portion of the opening portion of the main body portion. Fig.11 is with Figure 7 A diagram showing the periphery of the coating margin portion 81 of the cover portion 80 and the edge portion 72 of the opening portion 71 of the main body portion 70 as another example of the case 62 observed in the same observation direction and observation range.

[0070] exist Fig.11 The edge portion 72 of the opening portion 71 of the main body portion 70 shown in the figure has a groove 76 formed in a range facing the coating margin portion 81. Fig.11 The coating margin portion 81 of the illustrated cover portion 80 has a convex portion 84 to be inserted into the groove 76. The convex portion 84 corresponds to the shape of the groove 76 and has a quadrilateral frame shape.

[0071] exist Figure 7 and Figure 8The coating margin portion 81 of the cover portion 80 shown in FIG. 8 is formed with a groove 83. Fig.10 and Fig.11 The edge portion 72 of the opening portion 71 of the main body 70 shown in the figure is formed with a groove 76. By forming the groove in the region where the silicon-based sealing material 90 is arranged, the groove can hold the silicon-based sealing material 90. Therefore, it is possible to suppress the silicon-based sealing material 90 from overflowing from between the edge portion 72 of the opening portion 71 of the main body 70 and the cover portion 80, so that the silicon-based sealing material 90 can be easily applied to the coating margin portion 81 of the cover portion 80.

[0072] also, Figure 7 The edge portion 72 of the opening portion 71 of the main body portion 70 shown has a protrusion 75 that is inserted into the groove 83. Fig.11 The coating margin portion 81 of the cover 80 shown in the figure has a convex portion 84 inserted into the groove 76. When the convex portion is inserted into the groove in the area where the silicon-based sealing material 90 is arranged, a gap of a labyrinth structure is formed between the groove and the convex portion as moisture passes through the gap between the edge portion 72 of the opening 71 of the main body 70 and the cover 80. And the gap of the labyrinth structure is sealed by the silicon-based sealing material 90. Therefore, it is possible to further suppress the intrusion of moisture into the main body 70 from between the edge portion 72 of the opening 71 of the main body 70 and the cover 80.

[0073] also, Figure 8 and Fig. 9 The edge 72 of the opening 71 of the main body 70 shown is a flat surface. Fig. 9 and Fig.10 The coating margin portion 81 of the cover portion 80 shown in the figure is a flat surface. By forming the region where the silicon-based sealing material 90 is arranged as a flat surface, the case 62 can be easily manufactured, and the manufacturing cost of the brake fluid pressure control device 60 can be reduced.

[0074] In addition, Figure 7 , Figure 8 and Fig. 9 The edge portion 72 of the opening portion 71 of the main body portion 70 shown in the figure does not form the groove 76. In the case where the groove 76 is formed in the edge portion 72, the side wall ( Fig.10 and Fig.11 The left side wall of the groove 76) from the coating margin portion 81 to the control substrate 51 side ( Fig.10 and Fig.11 Therefore, when the groove 76 is formed in the edge portion 72, the control substrate 51 has to be made smaller than when the groove 76 is not formed in the edge portion 72 by the amount by which the side wall of the groove 76 overflows toward the control substrate 51 side. That is, by not forming the groove 76 in the edge portion 72 of the opening portion 71 of the main body portion 70, the control substrate 51 can be made larger than when the groove 76 is formed in the edge portion 72.

[0075] In addition, if Figure 6 As shown in FIG. 1 , when the brake fluid pressure control device 60 is viewed in a manner that the region where the opening 71 is formed is the upper surface of the main body 70, the edge 72 of the opening 71 is preferably located above the control substrate 51. Thus, when the opening 71 of the main body 70 is blocked by the cover 80 coated with the silicon-based sealing material 90, the silicon-based sealing material 90 is less likely to adhere to the control substrate 51. Therefore, the control substrate 51 can be made larger.

[0076] In addition, the surface roughness of the coating margin portion 81 of the cover portion 80 may be made rougher than the surface roughness of other portions of the cover portion 80. By making the surface roughness rough, the silicon-based sealing material 90 is easy to adhere. As a result, it is possible to further suppress the intrusion of moisture into the main body 70 from between the edge portion 72 of the opening portion 71 of the main body 70 and the cover portion 80. Similarly, the surface roughness of the range of the edge portion 72 of the opening portion 71 of the main body 70 facing the coating margin portion 81 may be made rougher than the surface roughness of other portions of the main body 70. By making the surface roughness rough, the silicon-based sealing material 90 is easy to adhere. As a result, it is possible to further suppress the intrusion of moisture into the main body 70 from between the edge portion 72 of the opening portion 71 of the main body 70 and the cover portion 80.

[0077] <Manufacturing method of brake hydraulic pressure control device>

[0078] Next, an example of a method of manufacturing the brake fluid pressure control device 60 according to the present embodiment will be described.

[0079] Fig.12 1 is a flowchart showing a method for manufacturing a brake fluid pressure control device according to an embodiment of the present invention.

[0080] Step S1 is a component installation process for installing components on the base 61. In the component installation process, the pump device 31 and the motor 40 are installed on the base 61. Step S2 is an assembly process for the base 61 and the main body 70 of the shell 62. In the assembly process, the base 61 and the main body 70 of the shell 62 are assembled. At this time, if there are components to be installed on the main body 70, the components may be assembled on the main body 70 before the base 61 and the main body 70 of the shell 62 are assembled.

[0081] Step S3 is a control substrate holding process. In the control substrate storage process, the control substrate 51 is stored in the main body 70 from the opening 71. Then, the main body 70 holds the control substrate 51. At this time, the control substrate 51 and the connection terminals 43 of the motor 40 are also connected. In addition, if there are components mounted on the main body 70, the components can also be assembled on the main body 70 in step S3.

[0082] Step S4 is a sealing material coating process. In the sealing material coating process, before the cover 80 blocks the opening 71, the silicon-based sealing material 90 is coated on the coating surplus portion 81 of the cover 80. Step S5 is a sealing process performed after the sealing material coating process. In the sealing process, the opening 71 of the main body 70 holding the control substrate 51 is blocked by the cover 80 coated with the silicon-based sealing material 90. In addition, the edge 72 of the opening 71 of the main body 70 and the cover 80 are sealed by the silicon-based sealing material 90.

[0083] <Effects of brake hydraulic pressure control device>

[0084] The effects of the brake fluid pressure control device 60 according to the present embodiment will be described.

[0085] The brake fluid pressure control device 60 of the present embodiment includes a base 61 formed with a flow path of brake fluid, a motor 40 as a driving source of a pump device 31 provided in the flow path of brake fluid, a control substrate 51 of a control device 50 for controlling the motor 40, and a case 62 for accommodating the control substrate 51. The case 62 includes a main body 70 that holds the control substrate 51 and has an opening 71 formed in a region facing the control substrate 51, and a cover 80 that blocks the opening 71. The cover 80 has a coating surplus portion 81 in which a silicon-based sealing material 90 is coated before the cover 80 blocks the opening 71, in a range facing the edge 72 of the opening 71 of the main body 70. Furthermore, the silicon-based sealing material 90 seals the space between the edge 72 of the opening 71 of the main body 70 and the cover 80.

[0086] In the brake fluid pressure control device 60 of the present embodiment, when the edge portion 72 of the opening portion 71 of the main body 70 and the cover 80 are sealed by the silicon-based sealing material 90, the silicon-based sealing material 90 is applied to the coating surplus portion 81 of the cover 80, and the opening portion 71 of the main body 70 holding the control substrate 51 is blocked by the cover 80 coated with the silicon-based sealing material 90. Therefore, in the brake fluid pressure control device 60 of the present embodiment, when the coating of the silicon-based sealing material 90 fails, only the cover 80 is discarded. Therefore, the brake fluid pressure control device 60 of the present embodiment can suppress the manufacturing cost compared with the past.

[0087] The brake fluid pressure control device 60 of the present embodiment has been described above, but the brake fluid pressure control device of the present invention is not limited to the description of the present embodiment. For example, only a part of the present embodiment may be implemented.

[0088] Description of Reference Numerals

[0089] 1 vehicle body, 2 handlebar, 3 front wheel, 3a rotor, 4 rear wheel, 4a rotor, 10 brake system, 11 brake lever, 12 first hydraulic circuit, 13 brake pedal, 14 second hydraulic circuit, 21 master cylinder, 22 reservoir, 23 brake caliper, 24 wheel cylinder, 25 main flow path, 25a middle part of main flow path, 26 secondary flow path, 26a middle part of secondary flow path, 27 booster flow path, 28 inlet valve, 29 outlet valve, 30 accumulator, 31 pump device, 32 switching valve, 33 booster valve, 34 master cylinder fluid pressure sensor, 35 wheel cylinder hydraulic pressure sensor, 40 motor, 41 output shaft, 42 eccentric body, 43 connecting terminal, 50 control device, 51 control substrate, 60 brake hydraulic pressure control device, 61 base, 62 shell, 70 main body, 71 opening, 72 edge, 73 pin, 74 engaging convex portion, 75 convex portion, 76 groove, 80 cover, 81 coating excess portion, 82 engaging concave portion, 83 groove, 84 convex portion, 90 silicon-based sealing material, 100 vehicle, MP master pressure cylinder port, WP wheel cylinder port.

Claims

1. A brake hydraulic pressure control device (60), which is a brake hydraulic pressure control device (60) for a vehicle (100), A base (61), a motor (40), a control substrate (51) of a control device (50), and a housing (62). The substrate (61) is formed with a flow path (26) for brake fluid. The motor (40) serves as a driving source for a pump device (31) provided in the flow path (26). The control device (50) controls the motor (40). The housing (62) accommodates the control substrate (51). The housing (62) comprises a main body (70) and a cover (80). The main body (70) holds the control substrate (51), and an opening is formed in a region facing the control substrate (51). The cover (80) blocks the opening (71) and is characterized in that: The cover (80) has a coating margin portion (81) in a range facing an edge portion (72) of the opening (71) of the main body (70), and the coating margin portion (81) is coated with a silicon-based sealing material (90) before the cover (80) blocks the opening (71). The edge portion (72) and the cover portion (80) are sealed by the silicon-based sealing material (90). A groove (83) is formed in the coating margin portion (81). The edge portion (72) has a protrusion (75) inserted into the groove (83). When the lid (80) blocks the opening (71), a gap communicating with the interior of the main body (70) is formed between the groove (83) and the protrusion (75) inserted into the groove (83), and the gap is sealed by the silicon-based sealing material (90). When the brake fluid pressure control device (60) is observed in such a manner that the region forming the opening (71) is the upper surface of the main body (70), The edge portion (72) is located above the control substrate (51).

2. A method for manufacturing a brake hydraulic pressure control device (60), wherein the brake hydraulic pressure control device (60) is a brake hydraulic pressure control device (60) for a vehicle (100), The brake fluid control device (60) comprises a base (61), a motor (40), a control substrate (51) of a control device (50), and a housing (62). The base (61) forms a flow path (26) for brake fluid. The motor (40) serves as a driving source for a pump device (31) provided in the flow path (26). The control device (50) controls the motor (40). The housing (62) accommodates the control substrate (51). The housing (62) comprises a main body (70) and a cover (80). The main body (70) holds the control substrate (51), an opening is formed in a region facing the control substrate (51), the cover (80) blocks the opening (71), and the manufacturing method of the brake fluid pressure control device (60) is characterized in that: The cover (80) has a coating margin portion (81) coated with a silicon-based sealing material (90) in a range facing an edge portion (72) of the opening (71) of the main body (70) when the cover (80) blocks the opening (71). A groove (83) is formed in the coating margin portion (81). The edge portion (72) has a protrusion (75) inserted into the groove (83). When the lid (80) blocks the opening (71), a gap communicating with the interior of the main body (70) is formed between the groove (83) and the protrusion (75) inserted into the groove (83), and the gap is sealed by the silicon-based sealing material (90). When the brake fluid pressure control device (60) is observed in such a manner that the region forming the opening (71) is the upper surface of the main body (70), the edge (72) is located above the control substrate (51). The manufacturing method of the brake fluid pressure control device (60) comprises a sealing material coating step (S4) and a sealing step (S5). In the sealing material coating step (S4), the silicon-based sealing material (90) is coated onto the coating margin (81) before the cover (80) blocks the opening (71). In the aforementioned sealing step (S5), after the aforementioned sealing material coating step (S4), the aforementioned opening portion (71) is blocked by means of the aforementioned cover portion (80), and the aforementioned edge portion (72) and the aforementioned cover portion (80) are sealed by means of the aforementioned silicon-based sealing material (90).

Images