Hydraulic pressure control unit and straddle-type vehicle

Abstract

To provide a hydraulic pressure control unit capable of improving productivity.SOLUTION: Provided is a hydraulic pressure control unit that includes base body and a terminal for a motor, the hydraulic pressure control unit including: a motor unit erected on the base body; a control board for controlling the motor unit; a connection terminal for electrically connecting the motor terminal and the control board; and a housing that is connected to the base body and covers the motor unit, wherein the housing includes a wall portion facing a top surface of the motor unit, the control board is disposed in a region on a side opposite to the motor unit with respect to the wall portion, the connection terminal includes a base portion provided on the wall portion, a connection portion that is provided on the base portion and into which the motor terminal is inserted, and a pin portion that has a tip portion extending toward the control board and is inserted into the control board, and the base portion is disposed between the wall portion and the motor unit.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a hydraulic control unit for a saddle-type vehicle and a saddle-type vehicle equipped with the hydraulic control unit.

Background Art

[0002] Among conventional hydraulic control units for saddle-type vehicles, there is a hydraulic control unit with a built-in motor unit (see, for example, Patent Document 1). The hydraulic control unit with a built-in motor unit includes a base body in which an internal flow path for brake fluid is formed, a motor unit that is a drive source of a pump provided in the internal flow path and stands on the base body, and a housing that is connected to the base body and covers the motor unit. Further, the hydraulic control unit with a built-in motor unit includes a control board for controlling the motor unit.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a hydraulic control unit for a saddle-type vehicle, it is desired to improve the productivity of the hydraulic control unit by proposing a structure different from the conventional one.

[0005] The present invention has been made against the background of the above problems, and a first object thereof is to provide a hydraulic control unit capable of improving productivity. Further, a second object of the present invention is to provide a saddle-type vehicle equipped with such a hydraulic control unit.

Means for Solving the Problems

[0006] The hydraulic control unit according to the present invention includes a base body in which an internal flow path through which brake fluid flows is formed, a motor unit that has motor terminals and is a driving source of a pump provided in the internal flow path and is erected on the base body, a control board that controls the motor unit, a connection terminal that electrically connects the motor terminals and the control board, and a housing that is connected to the base body and covers at least the motor unit. The housing includes a wall portion facing the top surface of the motor unit, the control board is disposed in a region on the side opposite to the motor unit with reference to the wall portion, the connection terminal is provided on the wall portion and includes a base portion, a connection portion provided on the base portion into which the motor terminals are inserted, and a pin portion whose tip portion extends toward the control board and is inserted into the control board. The base portion is disposed between the wall portion and the motor unit.

[0007] Moreover, the saddle-riding type vehicle according to the present invention is configured to include the hydraulic control unit according to the present invention.

Effects of the Invention

[0008] In the hydraulic control unit according to the present invention, since the base portion of the connection terminal that electrically connects the motor terminals and the control board is disposed between the wall portion of the housing and the motor unit, after connecting the control board to the connection terminal, the motor terminals can be connected to the connection terminal. For this reason, the brake flow path side unit with the motor unit assembled to the base body and the electrical component side unit with the housing, connection terminal, and control board assembled can be separately manufactured, and after separately inspecting both units, both units can be assembled to complete the hydraulic control unit. In such a hydraulic control unit, for example, when there is a defect in the brake flow path side unit or the electrical component side unit, before both units are assembled, only the unit having the defect among the two units can be replaced to complete the hydraulic control unit. Further, it is possible to re-assemble only the unit having the defect among the two units. Thereby, the productivity of the hydraulic control unit can be improved.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0010] Hereinafter, an example of a hydraulic control unit and a saddle-ride type vehicle according to the present invention will be described with reference to the drawings.

[0011] In the following, the case where the present invention is applied to a motorcycle will be described. However, the present invention may be applied to other saddle-riding type vehicles other than motorcycles. Other saddle-riding type vehicles other than motorcycles include, for example, three-wheeled vehicles having at least one of an engine and an electric motor as a drive source, and buggies. Further, other saddle-riding type vehicles other than motorcycles include, for example, bicycles. A bicycle means all vehicles that can be propelled on the road by the pedaling force applied to the pedals. That is, bicycles include ordinary bicycles, electric assist bicycles, electric bicycles, etc. Further, a motorcycle or a three-wheeled vehicle means a so-called motorbike, and motorbikes include motorcycles, scooters, electric scooters, etc.

[0012] Further, the configurations, operations, etc. described below are examples, and the hydraulic control unit and the saddle-riding type vehicle according to the present invention are not limited to such configurations, operations, etc. For example, in the following, the case where the hydraulic control unit includes two hydraulic circuits is described, but the number of hydraulic circuits of the hydraulic control unit is not limited to two. The hydraulic control unit may include only one hydraulic circuit, or may include three or more hydraulic circuits.

[0013] Also, in each figure, the same or similar members or parts are given the same reference numerals, or the assignment of reference numerals is omitted. Also, for the detailed structure, the illustration is appropriately simplified or omitted. Also, for duplicate explanations, they are appropriately simplified or omitted.

[0014] <Embodiment> <Configuration and Operation of Brake System for Saddle-Riding Type Vehicle> The configuration and operation of the brake system according to the present embodiment will be described. FIG. 1 is a diagram showing the configuration of a saddle-riding type vehicle equipped with a brake system including a hydraulic control unit according to an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of a brake system including a hydraulic control unit according to an embodiment of the present invention.

[0015] As shown in FIGS. 1 and 2, the brake system 10 is mounted on a saddle-type vehicle 100, such as a motorcycle. The saddle-type vehicle 100 includes a body 1, a handle 2 rotatably held by the body 1, a front wheel 3 rotatably held by the body 1 together with the handle 2, and a rear wheel 4 rotatably held by the body 1.

[0016] 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 handle 2 and is operated by the driver's hand. The first hydraulic circuit 12 generates a braking force corresponding to the operation amount of the brake lever 11 on a rotor 3a that rotates with the front wheel 3. The brake pedal 13 is provided at the lower part of the body 1 and is operated by the driver's foot. The second hydraulic circuit 14 generates a braking force corresponding to the operation amount of the brake pedal 13 on a rotor 4a that rotates with the rear wheel 4.

[0017] Note that the brake lever 11 and the brake pedal 13 are examples of the input parts of the brake. For example, as the input part of the brake replacing the brake lever 11, a brake pedal different from the brake pedal 13 provided on the body 1 may be adopted. Also, for example, as the input part of the brake replacing the brake pedal 13, a brake lever different from the brake lever 11 provided on the handle 2 may be adopted. Further, the first hydraulic circuit 12 may generate a braking force corresponding to the operation amount of the brake lever 11 or the operation amount of a brake pedal different from the brake pedal 13 provided on the body 1 on the rotor 4a that rotates with the rear wheel 4. Also, the second hydraulic circuit 14 may generate a braking force corresponding to the operation amount of the brake pedal 13 or the operation amount of a brake lever different from the brake lever 11 provided on the handle 2 on the rotor 3a that rotates with the front wheel 3.

[0018] The first hydraulic circuit 12 and the second hydraulic circuit 14 have the same configuration. Therefore, hereinafter, the configuration of the first hydraulic circuit 12 will be described as a representative.

[0019] The first hydraulic circuit 12 includes a master cylinder 20 containing a piston (not shown), a reservoir 21 attached to the master cylinder 20, a brake caliper 22 having a brake pad (not shown), and a wheel cylinder 23 that operates the brake pad (not shown) of the brake caliper 22.

[0020] An internal flow path 24 through which the brake fluid flows is formed in a base body 61 of a hydraulic control unit 60 provided in the first hydraulic circuit 12. In the present embodiment, a main flow path 25, a sub-flow path 26, and a pressure increasing flow path 27 are formed as the internal flow path 24 in the base body 61. In the first hydraulic circuit 12, the master cylinder 20 and the wheel cylinder 23 communicate with each other through a liquid pipe connected between the master cylinder 20 and a master cylinder port MP formed in the base body 61, the main flow path 25 formed in the base body 61, and a liquid pipe connected between the wheel cylinder 23 and a wheel cylinder port WP formed in the base body 61. Further, the brake fluid of the wheel cylinder 23 is discharged to a middle part 25a of the main flow path, which is a middle part of the main flow path 25, through the sub-flow path 26. Further, the brake fluid of the master cylinder 20 is supplied to a middle part 26a of the sub-flow path, which is a middle part of the sub-flow path 26, through the pressure increasing flow path 27.

[0021] In a region of the main flow path 25 on the wheel cylinder 23 side rather than the middle part 25a of the main flow path, a filling valve 28 is provided. By the opening and closing operation of the filling valve 28, the flow path portion at the installation location of the filling valve 28 in the main flow path 25 is opened and closed, and the flow rate of the brake fluid flowing through this region is controlled. In a region of the sub-flow path 26 on the upstream side rather than the middle part 26a of the sub-flow path, in order from the upstream side, a release valve 29 and an accumulator 30 for storing the brake fluid are provided. By the opening and closing operation of the release valve 29, the flow path portion at the installation location of the release valve 29 in the sub-flow path 26 is opened and closed, and the flow rate of the brake fluid flowing through this region is controlled. Further, in a region of the sub-flow path 26 on the downstream side rather than the middle part 26a of the sub-flow path, a pump 31 for applying pressure to the brake fluid in the sub-flow path 26 is provided. In a region of the main flow path 25 on the master cylinder 20 side rather than the middle part 25a of the main flow path, a switching valve 32 is provided. By the opening and closing operation of the switching valve 32, the flow path portion at the installation location of the switching valve 32 in the main flow path 25 is opened and closed, and the flow rate of the brake fluid flowing through this region is controlled. A pressure increasing valve 33 is provided in the pressure increasing flow path 27. By the opening and closing operation of the pressure increasing valve 33, the flow path portion at the installation location of the pressure increasing valve 33 in the pressure increasing flow path 27 is opened and closed, and the flow rate of the brake fluid flowing through the pressure increasing flow path 27 is controlled.

[0022] Also, in a region of the main flow path 25 on the master cylinder 20 side rather than the switching valve 32, a master cylinder hydraulic pressure sensor 34 for detecting the hydraulic pressure of the brake fluid of the master cylinder 20 is provided. Further, in a region of the main flow path 25 on the wheel cylinder 23 side rather than the filling valve 28, a wheel cylinder hydraulic pressure sensor 35 for detecting the hydraulic pressure of the brake fluid of the wheel cylinder 23 is provided.

[0023] That is, the main flow path 25 communicates the master cylinder port MP and the wheel cylinder port WP via the filling valve 28. Further, the sub-flow path 26 is defined as part or all of the flow path that allows the brake fluid in the wheel cylinder 23 to escape to the master cylinder 20 via the release valve 29. Further, the pressure boosting flow path 27 is defined as part or all of the flow path that supplies the brake fluid in the master cylinder 20 to the upstream side of the pump 31 in the sub-flow path 26 via the pressure boosting valve 33.

[0024] The filling valve 28 is, for example, an electromagnetic valve that switches the flow of brake fluid at its installation location from open to closed when changing from a non-energized state to an energized state. The release valve 29 is, for example, an electromagnetic valve that switches the flow of brake fluid toward the middle part 26a of the sub-flow path through its installation location from closed to open when changing from a non-energized state to an energized state. The switching valve 32 is, for example, an electromagnetic valve that switches the flow of brake fluid at its installation location from open to closed when changing from a non-energized state to an energized state. The pressure boosting valve 33 is, for example, an electromagnetic valve that switches the flow of brake fluid toward the middle part 26a of the sub-flow path through its installation location from closed to open when changing from a non-energized state to an energized state.

[0025] The pump 31 of the first hydraulic circuit 12 and the pump 31 of the second hydraulic circuit 14 are driven by a common motor unit 40. That is, the motor unit 40 is the drive source of the pump 31.

[0026] The hydraulic control unit 60 is composed of the base body 61, each member provided on the base body 61 (filling valve 28, release valve 29, accumulator 30, pump 31, switching valve 32, pressure boosting valve 33, master cylinder hydraulic sensor 34, wheel cylinder hydraulic sensor 35, motor unit 40, etc.), and the control device (ECU) 50.

[0027] The control device 50 may be one, or may be divided into a plurality. Also, the control device 50 may be attached to the base body 61, or may be attached to other members other than the base body 61. Further, a part or all of the control device 50 may be constituted by, for example, a microcomputer, a microprocessor unit, etc., may be constituted by something updatable such as firmware, or may be a program module executed by a command from a CPU or the like. Note that in the hydraulic control unit 60 according to the present embodiment, at least the part that controls the motor unit 40 among the control device 50 is constituted by the control board 51 described later.

[0028] For example, in the normal state, the control device 50 controls the filling valve 28, the releasing valve 29, the switching valve 32, and the pressure increasing valve 33 to be in a non-energized state. In that state, when the brake lever 11 is operated, in the first hydraulic circuit 12, the piston (not shown) of the master cylinder 20 is pushed in, the hydraulic pressure of the brake fluid in the wheel cylinder 23 increases, and the brake pad (not shown) of the brake caliper 22 is pressed against the rotor 3a of the front wheel 3, and the front wheel 3 is braked. Also, when the brake pedal 13 is operated, in the second hydraulic circuit 14, the piston (not shown) of the master cylinder 20 is pushed in, the hydraulic pressure of the brake fluid in the wheel cylinder 23 increases, and the brake pad (not shown) of the brake caliper 22 is pressed against the rotor 4a of the rear wheel 4, and the rear wheel 4 is braked.

[0029] The outputs of the respective 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. The control device 50 outputs a command for controlling the operations of the motor unit 40 and each valve, etc. according to the output, and executes a pressure reduction control operation, a pressure increase control operation, etc.

[0030] For example, when the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the first hydraulic circuit 12 is excessive or there is a possibility of excess, the control device 50 executes an operation to reduce the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the first hydraulic circuit 12. At this time, in the first hydraulic circuit 12, the control device 50 controls the closing valve 28 to be energized, controls the releasing valve 29 to be energized, controls the switching valve 32 to be de-energized, controls the pressure increasing valve 33 to be de-energized, and drives the motor unit 40. Further, when the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic circuit 14 is excessive or there is a possibility of excess, the control device 50 executes an operation to reduce the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic circuit 14. At this time, in the second hydraulic circuit 14, the control device 50 controls the closing valve 28 to be energized, controls the releasing valve 29 to be energized, controls the switching valve 32 to be de-energized, controls the pressure increasing valve 33 to be de-energized, and drives the motor unit 40.

[0031] Also for example, when the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the first hydraulic circuit 12 is insufficient or there is a possibility of insufficiency, the control device 50 executes an operation to increase the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the first hydraulic circuit 12. At this time, in the first hydraulic circuit 12, the control device 50 controls the closing valve 28 to be de-energized, controls the releasing valve 29 to be de-energized, controls the switching valve 32 to be energized, controls the pressure increasing valve 33 to be energized, and drives the motor unit 40. Further, when the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic circuit 14 is insufficient or there is a possibility of insufficiency, the control device 50 executes an operation to increase the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic circuit 14. At this time, in the second hydraulic circuit 14, the control device 50 controls the closing valve 28 to be de-energized, controls the releasing valve 29 to be de-energized, controls the switching valve 32 to be energized, controls the pressure increasing valve 33 to be energized, and drives the motor unit 40.

[0032] That is, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the first hydraulic circuit 12 to execute the antilock braking operation of the first hydraulic circuit 12. Further, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic circuit 14 to execute the antilock braking operation of the second hydraulic circuit 14. Further, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the first hydraulic circuit 12 to execute the automatic pressure increasing operation of the first hydraulic circuit 12. Further, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 23 of the second hydraulic circuit 14 to execute the automatic pressure increasing operation of the second hydraulic circuit 14.

[0033] <Configuration of Hydraulic Control Unit> The hydraulic control unit 60 is unitized with a base body 61, a motor unit 40, a control board 51 of the control device 50, etc. Hereinafter, the configuration of the unitized portion of the hydraulic control unit 60 will be described.

[0034] FIG. 3 is a partial cross-sectional view of the unitized portion of the hydraulic control unit according to the embodiment of the present invention as viewed from the side.

[0035] The base body 61 is formed of a metal such as an aluminum alloy, and has, for example, a substantially rectangular parallelepiped shape. Note that each side surface of the base body 61 may be flat, may include a curved portion, or may include a step.

[0036] The motor unit 40 is erected on the side surface 61a of the base body 61. An eccentric body 42 that rotates together with the output shaft 41 of the motor unit 40 is attached to the output shaft 41 of the motor unit 40. When the eccentric body 42 rotates, the plunger of the pump 31 pressed against the outer peripheral surface of the eccentric body 42 reciprocates, and thus the brake fluid is conveyed from the suction side to the discharge side of the pump 31. Further, the motor unit 40 includes motor terminals 43. The motor terminals 43 are provided, for example, on the top surface 40a on the side opposite to the side where the output shaft 41 is provided.

[0037] The above motor unit 40 is covered by a housing 70. That is, the hydraulic control unit 60 according to the present embodiment is a so-called in-motor-unit type hydraulic control unit. This housing 70 is arranged to face the side surface 61a of the base body 61 and is connected to the side surface 61a, for example. The housing 70 is formed of, for example, resin and has a substantially rectangular parallelepiped shape, for example. Specifically, the housing 70 includes a frame portion 71 and a wall portion 72. The frame portion 71 constitutes the outer peripheral portion of the housing 70 and has a frame shape, for example. The wall portion 72 is a wall portion facing the top surface 40a of the motor unit 40 and is a wall portion that closes at least a part of the inner peripheral portion of the frame portion 71. Note that each surface of the housing 70 may be flat, may include a curved portion, or may include a step.

[0038] As described above, the control board 51 constitutes at least the part that controls the motor unit 40 in the control device 50. The control board 51 is arranged in a region on the side opposite to the motor unit 40 with reference to the wall portion 72 of the housing 70. The control board 51 is covered by a lid portion 75 and is housed between the housing 70 and the lid portion 75. The control board 51 and the motor terminal 43 of the motor unit 40 are electrically connected by connection terminals 80 provided on the wall portion 72 of the housing 70. Hereinafter, with reference to FIG. 3 and FIGS. 4 to 7 described later, the detailed configuration of the connection terminals 80 and the configuration around the connection terminals 80 will be described.

[0039] FIG. 4 is a perspective view showing connection terminals of a hydraulic control unit according to an embodiment of the present invention. FIG. 5 is a side view showing the periphery of the connection terminals of the hydraulic control unit according to the embodiment of the present invention. Note that FIG. 5 is a view of observing the periphery of the connection terminal 80 in the same observation direction as FIG. 3. FIG. 6 is a side view showing the periphery of the connection terminals of the hydraulic control unit according to the embodiment of the present invention. Note that FIG. 6 is a view of observing the periphery of the connection terminal 80 in the direction of arrow A shown in FIG. 5. FIG. 7 is a plan view showing the periphery of the connection terminals of the hydraulic control unit according to the embodiment of the present invention. Note that FIG. 7 is a view of observing the periphery of the connection terminal 80 in the direction of arrow B shown in FIG. 5, and is a view of observing the periphery of the connection terminal 80 through the wall portion 72 of the housing 70.

[0040] The connection terminal 80 includes a base portion 81, a connection portion 82, and a pin portion 88. The base portion 81 has, for example, a substantially rectangular plate shape and is disposed between the wall portion 72 of the housing 70 and the motor unit 40. The connection portion 82 is provided on the base portion 81 and is a portion into which the motor terminal 43 of the motor unit 40 is inserted. That is, the connection portion 82 is a portion that is electrically connected to the motor terminal 43 in the connection terminal 80. Specifically, the connection portion 82 includes a clamping portion 83 that clamps the motor terminal 43 inserted into the gap 83a. In the present embodiment, the clamping portion 83 includes a pair of clamping pieces 84a and 84b formed by raising a part of the base portion 81. Then, the clamping portion 83 clamps the motor terminal 43 inserted into the gap 83a formed between the pair of clamping pieces 84a and 84b with the pair of clamping pieces 84a and 84b. Note that the configuration of the clamping portion 83 is not limited to the pair of clamping pieces 84a and 84b. For example, the clamping portion 83 may have a configuration in which the end of the clamping piece 84a and the end of the clamping piece 84b are connected. That is, the clamping portion 83 may have a configuration in which a through hole is formed in the connection portion 82 as the gap 83a.

[0041] The pin portion 88 has a tip portion that extends toward the control board 51 and is inserted into the control board 51. That is, the pin portion 88 is the portion that is electrically connected to the control board 51 in the connection terminal 80. In the present embodiment, the pin portion 88 is inserted into the through hole 52 of the control board 51 and is electrically connected to the control board 51. Further, in the present embodiment, the pin portion 88 is connected to the base portion 81 as follows. The connection terminal 80 includes an arm portion 85 connected to the base portion 81. This arm portion 85 includes a first arm portion 85a and a second arm portion 85b. The first arm portion 85a extends from the base portion 81 toward the motor unit 40. In other words, the first arm portion 85a extends from the base portion 81 in a direction away from the control board 51. The second arm portion 85b extends from an end portion of the first arm portion 85a on the side opposite to the base portion 81 side, intersects the extending direction of the first arm portion 85a, and extends in a direction away from the base portion 81. Further, the connection terminal 80 includes an extending portion 86 that extends from an end portion of the second arm portion 85b on the side opposite to the first arm portion 85a side toward the control board 51. And the tip-side portion of the extending portion 86 is the pin portion 88.

[0042] Note that the method of attaching the connection terminal 80 to the wall portion 72 of the housing 70 is not particularly limited. However, in the present embodiment, the connection terminal 80 is attached to the wall portion 72 of the housing 70 as follows. A press-fitting portion 87 that is press-fitted into the wall portion 72 is provided in a portion of the extending portion 86 below the pin portion 88. This press-fitting portion 87 is press-fitted into the wall portion 72, and the connection terminal 80 is attached to the wall portion 72 of the housing 70. By attaching the connection terminal 80 to the wall portion 72 in this manner, it becomes easy to attach the connection terminal 80 to the wall portion 72. Here, in order to attach the connection terminal 80 to the wall portion 72 using the press-fitting portion 87, the portion of the wall portion 72 into which the press-fitting portion 87 is press-fitted requires a certain thickness. At this time, by forming the arm portion 85 as described above, the portion of the wall portion 72 into which the press-fitting portion 87 is press-fitted can be formed as a convex portion 73 that protrudes toward the motor unit 40 side. The periphery of the wall portion 72 has more space on the motor unit 40 side than on the control board 51 side.

[0043] Here, some conventional vehicles are equipped with a hydraulic control unit that controls the hydraulic pressure of the brake fluid in the brake system. For example, the hydraulic control unit executes an anti-lock brake control that adjusts the braking force generated on the wheels by increasing or decreasing the hydraulic pressure of the brake fluid in a state where the driver of the vehicle operates an input unit such as a brake lever. A saddle-type vehicle, which is a type of vehicle, has a smaller vehicle body and a smaller capacity for mounting various devices compared to other vehicles such as four-wheel automobiles. Therefore, miniaturization of the hydraulic control unit and the like mounted on the saddle-type vehicle is desired. In contrast, in the hydraulic control unit 60 of the present embodiment, by forming the portion into which the press-fitting portion 87 in the wall portion 72 is press-fitted as a convex portion 73 that protrudes toward the motor unit 40 side, the hydraulic control unit 60 can be miniaturized.

[0044] The connection terminals of a conventional hydraulic control unit with a built-in motor unit are arranged in a region between the wall portion of the housing and the control board and are attached to the wall portion of the housing. In such a conventional hydraulic control unit with a built-in motor unit configured in this way, when inserting the motor terminal of the motor unit into the connection portion of the connection terminal, a force in a direction in which the connection terminal comes off from the wall portion of the housing acts on the connection terminal. For this reason, in a conventional hydraulic control unit with a built-in motor unit, a jig that supports toward the motor unit side presses around the connection portion of the connection terminal, and the motor terminal of the motor unit is inserted into the connection portion of the connection terminal.

[0045] Therefore, the conventional hydraulic control unit with a built-in motor unit may have the following assembly process. First, the connection terminals provided on the wall portion of the housing and the motor terminals of the motor unit erected on the base are electrically connected using the above-described jig. After that, a control board is connected to the connection terminals. For this reason, the conventional hydraulic control unit with a built-in motor unit is inspected after the assembly of the entire hydraulic control unit is completed. And when there is a defect in the hydraulic control unit, for example, the entire hydraulic control unit may be discarded. Also, when there is a defect in the hydraulic control unit, for example, in order to eliminate the defect, the entire hydraulic control unit may be disassembled and reassembled from the beginning. For this reason, the conventional hydraulic control unit with a built-in motor unit may increase production costs or reduce productivity.

[0046] On the one hand, in the hydraulic control unit 60 according to the present embodiment, when inserting the motor terminal 43 of the motor unit 40 into the connection portion 82 of the connection terminal 80, a force in the direction of pressing the connection terminal 80 against the wall portion 72 of the housing 70 acts on the connection terminal 80. That is, in the hydraulic control unit 60 according to the present embodiment, when inserting the motor terminal 43 of the motor unit 40 into the connection portion 82 of the connection terminal 80, a force in the direction in which the connection terminal 80 comes off from the wall portion 72 of the housing 70 does not act on the connection terminal 80. Therefore, in the hydraulic control unit 60 according to the present embodiment, after connecting the control board 51 to the connection terminal 80, the motor terminal 43 can be connected to the connection terminal 80. For this reason, in the hydraulic control unit 60 according to the present embodiment, the brake flow path side unit in which the motor unit 40 is assembled to the base body 61 and the electrical component side unit in which the housing 70, the connection terminal 80, and the control board 51 are assembled can be manufactured separately. And in the hydraulic control unit 60 according to the present embodiment, after separately inspecting the brake flow path side unit and the electrical component side unit, both units can be assembled to complete the hydraulic control unit 60. For this reason, when there is a defect in one of the brake flow path side unit and the electrical component side unit of the hydraulic control unit 60 according to the present embodiment, for example, only the unit having the defect among the brake flow path side unit and the electrical component side unit can be replaced to complete the hydraulic control unit 60. Further, when there is a defect in the hydraulic control unit 60 according to the present embodiment, for example, in order to eliminate the defect, only the unit having the defect among the brake flow path side unit and the electrical component side unit can be reassembled to complete the hydraulic control unit 60. Thereby, the hydraulic control unit 60 according to the present embodiment can improve productivity.

[0047] Here, in the hydraulic control unit 60 according to the present embodiment, when the wall portion 72 of the housing 70 expands due to the heat generated from the motor unit 40, the control board 51, etc., the wall portion 72 may expand in a direction to move the connection terminal 80 toward the motor unit 40 side. Further, when the motor unit 40 expands due to the heat generated from the motor unit 40, the control board 51, etc., the motor terminal 43 for the motor may expand in a direction to move the connection terminal 80 toward the wall portion 72 side. For this reason, the inventor considered that fretting corrosion might occur at the contact portion between the connection portion 82 of the connection terminal 80 and the motor terminal 43 of the motor unit 40 due to frictional stress variation. And as a result of intensive studies, the inventor also aims to suppress the occurrence of fretting corrosion at the contact portion between the connection portion 82 and the motor terminal 43 in the hydraulic control unit 60 of the present embodiment.

[0048] Specifically, the hydraulic control unit 60 according to the present embodiment includes a buffer member 90 sandwiched between the wall portion 72 of the housing 70 and the base portion 81 of the connection terminal 80. Thereby, the stress in the direction of moving the base portion 81 toward the wall portion 72 of the housing 70 acting on the base portion 81 of the connection terminal 80 can be received by the buffer member 90. As a result, the hydraulic control unit 60 according to the present embodiment can suppress the friction due to the stress variation generated between the connection portion 82 of the connection terminal 80 and the motor terminal 43 of the motor unit 40, and can suppress the occurrence of fretting corrosion at the contact portion between the connection portion 82 and the motor terminal 43. Further, the hydraulic control unit 60 according to the present embodiment can suppress an increase in the contact resistance between the connection portion 82 and the motor terminal 43 by suppressing the occurrence of fretting corrosion at the contact portion between the connection portion 82 and the motor terminal 43.

[0049] If it can be deformed by the stress acting on the base portion 81 of the connection terminal 80, the material of the buffer member 90 is not particularly limited. For example, the buffer member 90 may be formed of a viscoelastic body such as rubber and resin. Further, for example, the buffer member 90 may be a spring formed of metal or the like. When the buffer member 90 is formed of a viscoelastic body, considering heat resistance and moldability, etc., it is preferably formed of silicon. When the buffer member 90 is formed of a viscoelastic body, the buffer member 90 may be provided between the wall portion 72 of the housing 70 and the base portion 81 of the connection terminal 80 with the formed viscoelastic body, or a viscoelastic body may be applied to at least one of the wall portion 72 of the housing 70 and the base portion 81 of the connection terminal 80.

[0050] Here, the buffer member 90 is preferably arranged at the position shown in FIG. 7 when observing the holding portion 83 in the observation direction along the insertion direction of the motor terminal 43 into the holding portion 83 (the observation direction in FIG. 7). Specifically, the buffer member 90 includes a first buffer member 91 and a second buffer member 92. The first buffer member 91 and the second buffer member 92 are, for example, spherical. At least a part of the holding portion 83 is arranged in the region sandwiched between the first buffer member 91 and the second buffer member 92. And when observing the holding portion 83 in the observation direction along the insertion direction of the motor terminal 43 into the holding portion 83 (the observation direction in FIG. 7), the first buffer member 91 and the second buffer member 92 are preferably arranged such that the virtual line 90a connecting the centers of the first buffer member 91 and the second buffer member 92 intersects the center line 83b of the gap 83a of the holding portion 83. The positions where the first buffer member 91 and the second buffer member 92 are arranged in the base portion 81 are positions where deformation is likely to occur when the motor terminal 43 is inserted into the holding portion 83. That is, the positions where the first buffer member 91 and the second buffer member 92 are arranged in the base portion 81 are positions where stress is likely to occur. Therefore, by arranging the buffer member 90 at the above-mentioned position, the effect of suppressing the occurrence of fretting corrosion by the buffer member 90 is improved.

[0051] <Effect of the hydraulic control unit> The effect of the hydraulic control unit 60 according to the present embodiment will be described.

[0052] The hydraulic control unit 60 according to this embodiment is a hydraulic control unit for a straddle-type vehicle 100, which includes a base body 61, a motor unit 40, a control board 51, connection terminals 80, and a housing 70. An internal flow path 24 through which brake fluid flows is formed in the base body 61. The motor unit 40 has motor terminals 43, is a drive source for a pump 31 provided in the internal flow path 24, and is erected on the base body 61. The control board 51 controls the motor unit 40. The connection terminals 80 electrically connect the motor terminals 43 and the control board 51. The housing 70 is connected to the base body 61 and covers at least the motor unit 40. Further, the housing 70 includes a wall portion 72 facing the top surface 40a of the motor unit 40. The control board 51 is arranged in a region on the side opposite to the motor unit 40 with reference to the wall portion 72. The connection terminals 80 are provided on the wall portion 72. Further, the connection terminals 80 include a base portion 81, a connection portion 82 provided on the base portion 81 and into which the motor terminals 43 are inserted, and a pin portion 88 whose tip portion extends toward the control board 51 and is inserted into the control board 51. And the base portion 81 of the connection terminal 80 is arranged between the wall portion 72 of the housing 70 and the motor unit 40.

[0053] The hydraulic control unit 60 configured in this way can improve productivity.

[0054] <Modification Example> FIG. 8 is a plan view showing the periphery of the connection terminal of a modification example of the hydraulic control unit according to the embodiment of the present invention. Note that FIG. 8 is a view of observing the periphery of the connection terminal 80 of the modification example of the hydraulic control unit 60 in the same observation direction as FIG. 7, and is a view of observing the periphery of the connection terminal 80 through the wall portion 72 of the housing 70.

[0055] In the hydraulic control unit 60 shown in FIG. 8, the buffer member 90 is formed in an annular shape surrounding the connection portion 82. Even if the buffer member 90 formed in this way is sandwiched between the wall portion 72 of the housing 70 and the base portion 81 of the connection terminal 80, a part of the buffer member 90 can be arranged at the position where the first buffer member 91 and the second buffer member 92 are arranged in FIG. 7. Therefore, similar to the hydraulic control unit 60 described with reference to FIGS. 1 to 7, the hydraulic control unit 60 shown in FIG. 8 also has an improved effect of suppressing the occurrence of fretting corrosion by the buffer member 90. In FIG. 8, the buffer member 90 is formed in a substantially rectangular annular shape. However, the shape of the buffer member 90 is not limited to a substantially rectangular annular shape. For example, the buffer member 90 may be formed in a substantially circular annular shape.

[0056] FIG. 9 is a side view showing the periphery of the connection terminal of a modified example of the hydraulic control unit according to an embodiment of the present invention. Note that FIG. 9 is a view of observing the periphery of the connection terminal 80 of the modified example of the hydraulic control unit 60 in the same observation direction as FIG. 5.

[0057] In the hydraulic control unit 60 described with reference to FIGS. 1 to 7, the connection portion 82 of the connection terminal 80 was in line contact with the motor terminal 43. On the other hand, in the hydraulic control unit 60 shown in FIG. 9, the connection portion 82 of the connection terminal 80 has a contact portion 89 that is in surface contact with the motor terminal 43. In FIG. 9, an example in which the holding pieces 84a and 84b have the contact portion 89 is shown. Therefore, compared with the hydraulic control unit 60 described with reference to FIGS. 1 to 7, the hydraulic control unit 60 shown in FIG. 9 can further suppress the friction due to the fluctuation of the stress generated between the connection portion 82 of the connection terminal 80 and the motor terminal 43 of the motor unit 40, and can further suppress the occurrence of fretting corrosion at the contact portion between the connection portion 82 and the motor terminal 43. Note that the hydraulic control unit 60 shown in FIG. 9 includes the buffer member 90, but even if it does not include the buffer member 90, the frictional force between the connection portion 82 and the motor terminal 43 is increased by the contact portion 89, so that the occurrence of fretting corrosion at the contact portion between the connection portion 82 and the motor terminal 43 can be suppressed.

[0058] As described above, the hydraulic control unit 60 according to the present embodiment has been explained. However, the hydraulic control unit according to the present invention is not limited to the description of the present embodiment. Only a part of the present embodiment may be implemented for the hydraulic control unit according to the present invention.

Description of Reference Numerals

[0059] 1 Body, 2 Handle, 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, 20 Master cylinder, 21 Reservoir, 22 Brake caliper, 23 Wheel cylinder, 24 Internal flow path, 25 Main flow path, 25a Middle part of the main flow path, 26 Sub-flow path, 26a Middle part of the sub-flow path, 27 Boost flow path, 28 Filling valve, 29 Release valve, 30 Accumulator, 31 Pump, 32 Switching valve, 33 Boost valve, 34 Master cylinder hydraulic pressure sensor, 35 Wheel cylinder hydraulic pressure sensor, 40 Motor unit, 40a Top surface, 41 Output shaft, 42 Eccentric body, 43 Terminals for motor, 50 Control device, 51 Control board, 52 Through hole, 60 Hydraulic control unit, 61 Base body, 61a Side surface, 70 Housing, 71 Frame part, 72 Wall part, 73 Protrusion, 75 Cover part, 80 Connection terminal, 81 Base part, 82 Connection part, 83 Clamping part, 83a Gap, 83b Center line, 84a Clamping piece, 84b Clamping piece, 85 Arm part, 85a First arm part, 85b Second arm part, 86 Extension part, 87 Press-fitting part, 88 Pin part, 89 Contact part, 90 Buffer member, 90a Virtual line, 91 First buffer member, 92 Second buffer member, 100 Straddle-type vehicle, MP Master cylinder port, WP Wheel cylinder port.

Claims

1. A base body (61) in which an internal flow path (24) through which brake fluid flows is formed, A motor unit (40) having motor terminals (43), being a drive source of a pump (31) provided in the internal flow path (24), and standing on the base body (61), A control board (51) for controlling the motor unit (40), A connection terminal (80) for electrically connecting the motor terminals (43) and the control board (51), A housing (70) connected to the base body (61) and covering at least the motor unit (40), A hydraulic control unit (60) for a saddle-riding type vehicle (100), comprising: The housing (70) includes a wall portion (72) facing the top surface (40a) of the motor unit (40), The control board (51) is disposed in a region on the side opposite to the motor unit (40) with respect to the wall portion (72), The connection terminal (80) Is provided on the wall portion (72), A base portion (81), A connection portion (82) provided on the base portion (81) and into which the motor terminals (43) are inserted, A pin portion (88) whose tip portion extends toward the control board (51) and is inserted into the control board (51), And comprises: The base portion (81) is disposed between the wall portion (72) and the motor unit (40). Hydraulic control unit (60).

2. The hydraulic control unit (60) according to claim 1, further comprising a buffer member (90) sandwiched between the wall portion (72) of the housing (70) and the base portion (81) of the connection terminal (80). Hydraulic control unit (60) according to claim 1.

3. The buffer member (90) is formed of a viscoelastic body. The hydraulic control unit (60) according to claim 2.

4. The buffer member (90) is formed of silicon. The hydraulic control unit (60) according to claim 3.

5. The buffer member (90) is a spring. The hydraulic control unit (60) according to claim 2.

6. The connection terminal (80) includes a press-fitting portion (87) press-fitted into the wall portion (72). The hydraulic control unit (60) according to any one of claims 1 to 5.

7. The connection portion (82) includes a clamping portion (83) that clamps the motor terminal (43) inserted into the gap (83a). The buffer member (90) includes a first buffer member (91) and a second buffer member (92). At least a part of the clamping portion (83) is disposed in a region sandwiched between the first buffer member (91) and the second buffer member (92). When observing the clamping portion (83) in an observation direction along the insertion direction of the motor terminal (43). The first buffer member (91) and the second buffer member (92) are arranged such that a virtual line (90a) connecting the centers of the first buffer member (91) and the second buffer member (92) intersects a center line (83b) of the gap (83a) of the clamping portion (83). The hydraulic control unit (60) according to any one of claims 2 to 5.

8. The buffer member (90) is formed in an annular shape surrounding the connection portion (82). The hydraulic control unit (60) according to any one of claims 2 to 5.

9. The connection portion (82) of the connection terminal (80) has a contact portion (89) that is in surface contact with the motor terminal (43). The hydraulic control unit (60) according to any one of claims 1 to 5. **Claim 10** A saddle-ride type vehicle (100) comprising the hydraulic control unit (60) according to any one of claims 1 to 5. ​

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