Brake hydraulic control device

Abstract

The present invention provides a brake hydraulic control device for a vehicle that can ensure a larger installation space for a control substrate in a shell than before. The brake hydraulic control device of the present invention is a brake hydraulic control device for a vehicle, comprising a base body having a flow path for brake fluid, a motor for driving a pump device installed in the flow path, a control substrate for a control device for controlling the motor, a shell for accommodating the control substrate, and a plurality of external threaded parts for fixing the base body and the shell, characterized in that the motor is arranged in a space surrounded by the base body and the shell, a plurality of through holes for inserting the external threaded parts are formed in the base body, and the external threaded parts are respectively inserted into the through holes and are fastened to the shell.

Description

Technical Field

[0001] The invention relates to a brake hydraulic pressure control device for a vehicle. 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 substrate forming a flow path for brake fluid, a motor driving a pump device arranged in the flow path for brake fluid, a control substrate of a controller for controlling the motor, and a shell accommodating the control substrate. The substrate of the brake fluid control device is roughly rectangular in shape, and a shell is mounted on one surface. At this time, the substrate and the shell are fixed with a plurality of external threaded parts. Here, the surface of the substrate on which the shell is mounted is set as the first surface. In addition, the opposite surface of the first surface of the substrate is set as the second surface. When the first surface and the second surface are defined in this way, in the conventional brake fluid control device, the motor driving the pump device is mounted on the second surface of the substrate.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2014-015077.

[0005] When fixing the base and the shell with external screws, the following two methods are considered. The first method is to insert each external screw from the base side to the shell side to fasten each external screw to the shell. The second method is to insert each external screw from the shell side to the base side to fasten each external screw to the base.

[0006] When the substrate and the shell are fixed by inserting each external threaded member from the substrate side to the shell side, a plurality of through holes for inserting the external threaded member are formed at the substrate. These through holes are formed in a manner that penetrates the first surface from the second surface. In addition, the external threaded member is inserted from the second surface side into each of the through holes formed in the substrate to fasten the external thread forming portion of each external threaded member to the shell. Thus, the substrate is clamped between the head of each external threaded member arranged on the second surface and the shell, and the substrate and the shell are fixed. Here, as mentioned above, the conventional brake hydraulic control device is equipped with a motor driving the pump device on the second surface of the substrate. Therefore, it is actually very difficult to ensure the space for configuring the head of each external threaded member on the second surface of the substrate. Therefore, in the conventional brake hydraulic control device, the substrate and the shell are fixed by inserting each external threaded member from the shell side to the substrate side.

[0007] When the base and the shell are fixed by inserting each external threaded component from the shell side to the base side, a plurality of through holes for inserting the external threaded components are formed at the shell. And, an external threaded component is inserted into each of the through holes formed in the shell, and the external thread forming portion of each external threaded component and the base are fastened and connected. Here, as described above, the control substrate is accommodated in the shell. Therefore, when the base and the shell are fixed by inserting each external threaded component from the shell side to the base side, the control substrate needs to be arranged in the shell in a manner that avoids the external threaded components that penetrate the shell and do not interfere with the control substrate. Therefore, the conventional brake hydraulic control device has the problem of a smaller installation space for the control substrate in the shell. Summary of the invention

[0008] The present invention has been made against the background of the above-mentioned problems, and an object of the present invention is to provide a brake fluid pressure control device for a vehicle capable of ensuring a larger installation space for a control substrate in a housing than conventional devices.

[0009] The brake hydraulic control device of the present invention is a brake hydraulic control device for a vehicle, comprising a base body forming a flow path for brake fluid, a motor driving a pump device arranged in the aforementioned flow path, a control substrate of a control device for controlling the aforementioned motor, a shell accommodating the aforementioned control substrate, and a plurality of externally threaded parts fixing the aforementioned base body and the aforementioned shell, and is characterized in that the aforementioned motor is arranged in a space surrounded by the aforementioned base body and the aforementioned shell, a plurality of through holes for inserting the aforementioned externally threaded parts are formed in the aforementioned base body, and the aforementioned externally threaded parts are respectively inserted into the aforementioned through holes and are fastened to the aforementioned shell.

[0010] Effects of the Invention

[0011] The brake hydraulic control device of the present invention is provided with a motor for driving a pump device in a space surrounded by a base and a shell. Therefore, the configuration space for the heads of the externally threaded parts can be ensured on the opposite side of the surface of the base on which the shell is mounted. Therefore, the base and the shell can be fixed by inserting the externally threaded parts from the base side to the shell side. Therefore, in the brake hydraulic control device of the present invention, the externally threaded parts do not need to pass through the shell. Therefore, in the brake hydraulic control device of the present invention, when the control substrate is disposed in the shell, the control substrate can also be disposed in the space that previously interfered with the externally threaded parts. Therefore, the brake hydraulic control device of the present invention can ensure that the installation space for the control substrate is larger than before in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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.

[0013] Figure 2 It is a diagram showing the configuration of a brake system according to an embodiment of the present invention.

[0014] Figure 3It is a perspective view showing a unitized portion of the brake fluid pressure control device according to the embodiment of the present invention.

[0015] Figure 4 It is a partial cross-sectional view showing a unitized portion of the brake fluid pressure control device according to the embodiment of the present invention as seen from the side. DETAILED DESCRIPTION

[0016] Hereinafter, a brake fluid pressure control device for a vehicle according to the present invention will be described with reference to the drawings.

[0017] 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.

[0018] 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.

[0019] Implementation method.

[0020] A vehicle brake system including the brake fluid pressure control device according to the present embodiment will be described below.

[0021] <Structure and operation of vehicle brake system>

[0022] The structure and operation of the brake system according to the present embodiment will be described.

[0023] 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.

[0024] like Figure 1and 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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 a master cylinder port MP formed on the base 70, a main flow path 25 formed on the base 70, and a fluid pipe connected between the wheel cylinder 24 and a wheel cylinder port WP formed on the base 70. In addition, a secondary flow path 26 is formed on the base 70. 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 70. 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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 .

[0035] The brake hydraulic control device 60 is composed of a base 70, various components arranged on the base 70 (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.

[0036] The control device 50 may be one or more. The control device 50 may be mounted on the base 70 or other components other than the base 70. 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] <Structure of brake hydraulic pressure control device>

[0043] The base body 70 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 70 is also unitized with the base body 70 and the control substrate 51. The structure of the unitized portion of the brake fluid pressure control device 60 will be described below.

[0044] Figure 3 2 is a perspective view showing a unitized portion of a brake fluid pressure control device according to an embodiment of the present invention. Figure 4 It is a partial cross-sectional view showing a unitized portion of the brake fluid pressure control device according to the embodiment of the present invention as seen from the side. Figure 4 In the figure, the central part is a cross section showing the periphery of the motor 40. In addition, Figure 4 In the figure, the two end portions are cross-sections showing the fixing structure of the base 70 and the shell 80 described later. Figure 4 In the figure, a workbench 97 and a jig 98 used for fixing the base 70 and a case 80 described later are also indicated by imaginary lines.

[0045] The above-mentioned base 70 is formed of a metal such as aluminum, for example, and is in a substantially rectangular parallelepiped shape. The base 70 includes a first surface 71 and a second surface 72. The first surface 71 is a surface on which a shell 80 described later is mounted, in other words, a surface in contact with the shell 80. The second surface 72 is an opposite surface to the first surface 71. In addition, each surface of the base 70 may include a step portion, and further, may include a curved surface portion.

[0046] like Figure 4As shown, the motor 40 is mounted on the base 70. The eccentric body 42 that rotates together with the output shaft 41 of the motor 40 is mounted on 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 the brake fluid is transported from the suction side to the discharge side of the pump device 31. In addition, the component to which the motor 40 is mounted is not limited to the base 70. For example, the motor 40 may also be mounted on the housing 80 described later.

[0047] As described above, the shell 80 is mounted on the first surface 71 of the base 70. At this time, the base 70 and the shell 80 are fixed by a plurality of external screws 90. Therefore, a plurality of through holes 73 for inserting the external screws 90 are formed in the base 70. These through holes 73 are formed to penetrate from the second surface 72 to the first surface 71. In addition, these through holes 73 are arranged at the four corners of the base 70, for example. In addition, in the present embodiment, when the base 70 and the shell 80 are fixed, in order to prevent the head 91 of the external screw 90 from protruding from the second surface 72, the peripheral edge of the opening of the through hole 73 on the second surface 72 side is countersunk to form a recess 74 for accommodating the head 91. These recesses 74 may be formed or may not be formed.

[0048] The housing 80 includes a fixing portion 81 for fixing the base 70 and the housing 80 and a substrate storage portion 82 for storing the control substrate 51. Figure 4 As shown, in a state where the base 70 and the shell 80 are fixed, the motor 40 is arranged in a space surrounded by the base 70 and the shell 80. In addition, at least a portion of the shell 80 is formed of resin. In other words, the shell 80 includes a resin portion 83. In this embodiment, both the fixing portion 81 and the substrate storage portion 82 are the resin portion 83.

[0049] In detail, the fixing portion 81 is arranged at the shell 80 at a position facing the first surface 71 of the base 70. In the fixing portion 81, a hole 84 is formed at a position facing each through hole 73 of the base 70. These holes 84 are opened at least at the end of the first surface side of the base 70, and are connected to each through hole 73 of the base 70. In addition, the external thread forming portion 92 of the external thread member 90 inserted into each through hole 73 of the base 70 is fastened and connected with the hole 84. Thus, the base 70 and the shell 80 are fixed in a state where the base 70 is clamped between the head 91 of each external thread member 90 arranged on the second surface 72 of the base 70 and the fixing portion 81 of the shell 80. In addition, in the present embodiment, the structure in which the external thread forming portion 92 of each external thread member 90 is fastened and connected with the hole 84 is formed by self-tapping. However, the fastening and connecting structure of the external thread forming portion 92 of each external thread member 90 and the hole 84 is not limited to this structure. For example, an internal thread may be formed in advance on the inner peripheral surface of each hole 84 , and the internal thread and the external thread forming portion 92 of each external thread 90 may be fastened and connected.

[0050] Here, the conventional brake hydraulic control device has a motor for driving the pump device installed on the second surface of the base. Therefore, it is very difficult for the conventional brake hydraulic control device to ensure space for arranging the heads of each externally threaded component on the second surface of the base. Therefore, in the conventional brake hydraulic control device, each externally threaded component is inserted from the shell side to the base side to fix the base and the shell. On the other hand, the brake hydraulic control device 60 of the present embodiment is configured with the motor 40 for driving the pump device 31 in the space surrounded by the base 70 and the shell 80 as described above. Therefore, the configuration space for the heads 91 of each externally threaded component 90 can be ensured on the second surface 72 of the base 70. Therefore, each externally threaded component 90 can be inserted from the base 70 side to the shell 80 side to fix the base 70 and the shell 80.

[0051] The substrate storage portion 82 of the housing 80 is arranged on the side opposite to the base 70 with reference to the fixing portion 81. The control substrate 51 is stored in the substrate storage portion 82. The fixing structure of the control substrate 51 and the housing 80 is not particularly limited. In the present embodiment, the control substrate 51 is fixed to the pin 85 fixed to the housing 80, and the control substrate 51 and the housing 80 are fixed. 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.

[0052] Here, as described above, the brake fluid pressure control device 60 of the present embodiment can fix the base 70 and the shell 80 by inserting each external thread member 90 from the base 70 side to the shell 80 side. Figure 4 As shown, each external threaded member 90 does not need to penetrate the shell 80. Therefore, in the brake fluid pressure control device 60 of this embodiment, when the control substrate 51 is set in the shell 80, the control substrate 51 can also be arranged in the space that previously interfered with the external threaded member. For example, in the case of this embodiment, when the brake fluid pressure control device 60 is viewed in the penetration direction of the through hole 73 of the base 70 (in Figure 4 When the brake hydraulic control device 60 is viewed from the upper side of the drawing, at least one of the external threaded parts 90 overlaps with the control substrate 51. This space is a space where the control substrate cannot be installed due to interference between the external threaded parts and the control substrate in the past. Therefore, the brake hydraulic control device 60 of this embodiment can ensure a larger installation space for the control substrate 51 in the shell 80 than before.

[0053] As described above, the control substrate 51 is accommodated in the space surrounded by the base 70 and the shell 80. Therefore, in order to suppress the intrusion of moisture into the space surrounded by the base 70 and the shell 80, it is preferable to seal the space between the base 70 and the shell 80. Conventionally, an O-ring is inserted between the base and the shell to seal the space between the base and the shell. On the other hand, in the brake fluid pressure control device 60 of the present embodiment, the space between the base 70 and the shell 80 is sealed by a silicon-based sealing material 95. In addition, the silicon-based sealing material 95 is a sealing material whose main component is silicon.

[0054] In detail, in a state where the substrate 70 and the shell 80 are separated, a silicon-based sealing material 95 is applied to the first surface 71 of the substrate 70 or the surface of the shell 80 facing the first surface 71. And, the first surface 71 of the substrate 70 and the surface facing the first surface 71 of the shell 80 are overlapped. Thereafter, as described above, the substrate 70 and the shell 80 are fixed using a plurality of external screws 90. Thus, the substrate 70 and the shell 80 are sealed by the silicon-based sealing material 95. In addition, after the silicon-based sealing material 95 is dried, the substrate 70 and the shell 80 are bonded together with the aid of the silicon-based sealing material 95. In addition, in the present embodiment, an annular groove 75 is formed on the first surface 71 of the substrate 70, for example, and the silicon-based sealing material 95 is applied to the groove 75. However, the shape of the portion where the silicon-based sealing material 95 is applied is arbitrary, for example, it may also be a plane.

[0055] For example, in the brake fluid pressure control device 60 of the present embodiment, it is assumed that the base 70 and the shell 80 are sealed by means of an O-ring. In order to seal the base 70 and the shell 80 by means of the O-ring, it is necessary to sandwich the base 70 and the shell 80 in such a way as to crush the O-ring. Therefore, a force in a direction in which the O-ring moves away from the base 70 acts on the shell 80. Here, in the present embodiment, as described above, the fixing portion 81 of the shell 80 is the resin portion 83. And, as Figure 4 As shown, the external thread forming portion 92 of the external thread member 90 is a structure that is directly fastened and connected to the resin portion 83. In such a fastening structure, when the base 70 and the shell 80 are sealed with an O-ring, when the fixing portion 81 as the resin portion 83 is heated by the heat generated by the control substrate 51 and the motor 40, the fixing portion 81 is deformed due to the force applied from the O-ring to the fixing portion 81, and the external thread member 90 is loosened. Therefore, in such a fastening structure, when the base 70 and the shell 80 are sealed with an O-ring, in order to suppress the loosening of the external thread member 90, it is necessary to embed a metal nut in the fixing portion 81 as the resin portion 83 and fasten the external thread forming portion 92 of the external thread member 90 to the nut.

[0056] On the other hand, when the base 70 and the shell 80 are sealed by the silicon-based sealing material 95, the force in the direction of leaving the base 70 does not act on the shell 80. In addition, after the silicon-based sealing material 95 is dried, the base 70 and the shell 80 are bonded by the silicon-based sealing material 95. That is, the fixed portion 81 of the resin portion 83 of the shell 80 is connected to the base 70 made of metal such as aluminum due to the silicon-based sealing material 95. Therefore, when the base 70 and the shell 80 are sealed by the silicon-based sealing material 95, the fixed portion 81 of the resin portion 83 is difficult to deform even if it is heated by the heat generated by the control substrate 51 and the motor 40. Therefore, when the base 70 and the shell 80 are sealed by the silicon-based sealing material 95, the external thread forming portion 92 of the external thread member 90 can be directly fastened and connected to the fixed portion 81 of the resin portion 83. This eliminates the need to embed a metal nut in the fixing portion 81 as the resin portion 83 , and thus it is possible to reduce the manufacturing cost of the brake fluid pressure control device 60 .

[0057] In addition, if Figure 3 and Figure 4 As shown in FIG. 1 , a gap 86 is formed between the fixing portion 81 and the substrate receiving portion 82 at the housing 80. In other words, the gap 86 is formed when the brake fluid pressure control device 60 is viewed in the through-hole 73 of the base 70 (in the through-hole 73). Figure 4 (in the figure, when the brake hydraulic control device 60 is viewed from the upper side of the drawing) is the range where the external threaded member 90 and the control substrate 51 overlap, and is formed between the external threaded member 90 and the control substrate 51. Figure 4 As shown, by forming the gap 86, when the base 70 and the shell 80 are fixed by the external screw 90, the jig 98 is inserted into the gap 86, thereby enabling the shell 80 to be fixed to the workbench 97 by the jig 98. That is, the shell 80 portion near the fastening portion of the external screw 90 can be fixed by the jig 98. Thus, the work of fixing the base 70 and the shell 80 by the external screw 90 becomes easy.

[0058] <Effects of brake hydraulic pressure control device>

[0059] The effects of the brake fluid pressure control device 60 according to the present embodiment will be described.

[0060] The brake fluid control device 60 of the present embodiment includes a base 70 having a flow path of brake fluid formed therein, a motor 40 driving a pump device 31 provided in the flow path of brake fluid, a control substrate 51 of a control device 50 controlling the motor 40, a shell 80 accommodating the control substrate 51, and a plurality of external screws 90 fixing the base 70 and the shell 80. The motor 40 is arranged in a space surrounded by the base 70 and the shell 80. A plurality of through holes 73 into which the external screws 90 are inserted are formed in the base 70. The external screws 90 are respectively inserted into the through holes 73 and are fastened to the shell 80. In this way, the brake fluid control device 60 of the present embodiment is arranged with the motor 40 driving the pump device 31 in a space surrounded by the base 70 and the shell 80. Therefore, the arrangement space of the head 91 of each external screw 90 can be ensured on the second surface 72 of the base 70. Therefore, each external screw 90 can be inserted from the base 70 side to the shell 80 side to fix the base 70 and the shell 80. Therefore, in the brake fluid pressure control device 60 of the present embodiment, as shown in FIG. Figure 4 As shown, each external threaded member 90 does not need to penetrate the shell 80. Therefore, in the brake fluid pressure control device 60 of the present embodiment, when the control substrate 51 is set in the shell 80, the control substrate 51 can be arranged in the space that previously interfered with the external threaded member. Therefore, the brake fluid pressure control device 60 of the present embodiment can ensure that the installation space of the control substrate 51 in the shell 80 is larger than before.

[0061] Preferably, the base 70 and the shell 80 are bonded by a silicon-based sealing material 95, and the shell 80 includes a resin portion 83. Furthermore, the external screws 90 are directly fastened and connected to the resin portion 83. With such a configuration, it is not necessary to embed a metal nut in the resin portion 83, and the manufacturing cost of the brake fluid pressure control device 60 can be suppressed.

[0062] In addition, preferably, when the brake hydraulic pressure control device 60 is observed in the through-hole 73 of the base 70, at least one of the external threaded parts 90 overlaps with the control substrate 51. This space is a space where the control substrate cannot be set due to interference between the external threaded parts and the control substrate in the past. In the brake hydraulic pressure control device 60 of this embodiment, the control substrate 51 can also be set in such a space.

[0063] In addition, preferably, a gap 86 is formed at the shell 80 in a range where the external thread 90 overlaps with the control substrate 51 and in a range between the external thread 90 and the control substrate 51 when the brake fluid pressure control device 60 is viewed in the through-hole 73 of the base 70. By forming the gap 86, the portion of the shell 80 near the fastening portion of the external thread 90 can be fixed with the clamp 98, and the operation of fixing the base 70 and the shell 80 with the external thread 90 becomes easy.

[0064] Although the brake fluid pressure control device 60 of the present embodiment has been described above, 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.

[0065] Description of Reference Numerals

[0066] 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 hydraulic pressure sensor, 35 wheel cylinder hydraulic pressure sensor device, 40 motor, 41 output shaft, 42 eccentric body, 43 connecting terminal, 50 control device, 51 control substrate, 60 brake hydraulic control device, 70 base, 71 first surface, 72 second surface, 73 through hole, 74 recess, 75 groove, 80 shell, 81 fixing portion, 82 substrate storage portion, 83 resin portion, 84 hole, 85 pin, 86 gap, 90 external thread member, 91 head, 92 external thread forming portion, 95 silicon-based sealing material, 97 workbench, 98 fixture, 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), It comprises a base (70), a motor (40), a control substrate (51) of a control device (50), a shell (80), and a plurality of external threaded parts (90). The substrate (70) is formed with a flow path (26) for brake fluid. The motor (40) drives the pump device (31) provided in the flow path (26). The control device (50) controls the motor (40). The housing (80) accommodates the control substrate (51). The plurality of external threaded members (90) fix the base (70) and the shell (80), and are characterized in that: The motor (40) is disposed in a space surrounded by the base (70) and the housing (80). A plurality of through holes (73) for inserting the external threaded member (90) are formed in the base (70). The external threaded members (90) are respectively inserted into the through holes (73) and are fastened to the shell (80). When viewed in the through direction of the through hole (73), at least one of the external threaded members (90) overlaps with the control substrate (51).

2. The brake hydraulic pressure control device (60) according to claim 1, characterized in that: The substrate (70) and the shell (80) are bonded together by a silicon-based sealing material (95). The housing (80) includes a resin portion (83). The external thread members (90) are respectively directly fastened and connected to the resin portions (83).

3. The brake hydraulic pressure control device (60) according to claim 1 or 2, characterized in that: A gap (86) is formed at the shell (80) in a range where the external threaded component (90) and the control substrate (51) overlap when viewed in the through direction of the through hole (73), and is between the external threaded component (90) and the control substrate (51).

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