Hydraulic control unit and saddle-type vehicle

Abstract

To provide a hydraulic control unit for a saddle-type vehicle, which is a hydraulic control unit that can be easily assembled, and a saddle-type vehicle equipped with the hydraulic control unit. [Solution] The hydraulic control unit is a hydraulic control unit for a saddle-type vehicle and comprises a base body having an internal passage through which brake fluid flows, a pump device provided in the internal passage, and a motor unit which is the drive source for the pump device and has a stator, a rotor, a housing that accommodates the stator and the rotor, and an output shaft connected to the rotor, wherein the motor unit is fixed to the base body, and further, the base body has a hole that rotatably supports the output shaft.

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] Some conventional vehicles include a hydraulic control unit that controls the hydraulic pressure of the brake fluid in a hydraulic circuit filled with the brake fluid. In the hydraulic control unit, for example, when the driver of the vehicle operates an input part such as a brake lever, the hydraulic pressure of the brake fluid in the hydraulic circuit is increased or decreased to adjust the braking force generated on the wheels, and anti-lock brake control is executed. Such a hydraulic control unit usually includes a base body in which an internal flow path through which the brake fluid flows is formed, and a motor unit that is a drive source of a pump device provided in the internal flow path.

[0003] Such a hydraulic control unit is known to be applicable to saddle-type vehicles. For example, Patent Document 1 discloses a hydraulic control unit for a saddle-type vehicle in which the motor unit is sandwiched between a base body and a housing that holds a control board of a control device for controlling the motor unit. According to Patent Document 1, in the hydraulic control unit described in Patent Document 1, bolting can be omitted as needed, and miniaturization is made possible.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described above, hydraulic control units for saddle-type vehicles are known. However, there is a demand for hydraulic control units for saddle-type vehicles that can be easily assembled.

[0006] The object of the present invention is to provide a hydraulic control unit for a saddle-type vehicle, which is a hydraulic control unit that can be easily assembled, and a saddle-type vehicle equipped with the hydraulic control unit. [Means for solving the problem]

[0007] A hydraulic control unit according to one embodiment of the present invention is a hydraulic control unit for a saddle-type vehicle, comprising: a base body having an internal passage through which brake fluid flows; a pump device provided in the internal passage; and a motor unit which is a drive source for the pump device and comprises a stator, a rotor, a housing that accommodates the stator and the rotor, and an output shaft connected to the rotor, wherein the motor unit is fixed to the base body, and further, the base body has a hole that rotatably supports the output shaft.

[0008] Furthermore, a saddle-type vehicle according to one embodiment of the present invention is equipped with a hydraulic control unit according to the present invention. [Effects of the Invention]

[0009] According to the present invention, a hydraulic control unit for a saddle-type vehicle is provided, which is a hydraulic control unit that can be easily assembled, and a saddle-type vehicle equipped with the hydraulic control unit is provided. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram showing the configuration of a saddle-type vehicle equipped with a brake system that includes a hydraulic control unit according to an embodiment of the present invention. [Figure 2] This is a schematic diagram showing the configuration of a brake system equipped with a hydraulic control unit according to an embodiment of the present invention. [Figure 3]This is a partial cross-sectional view of a hydraulic control unit according to an embodiment of the present invention, viewed from the side. [Figure 4] This is an enlarged view of part α in Figure 3. [Figure 5] This figure shows the internal structure of a hydraulic control unit according to an embodiment of the present invention. [Modes for carrying out the invention]

[0011] The hydraulic control unit and saddle-type vehicle according to the present invention will be described below with reference to the drawings.

[0012] Furthermore, although the following describes an example in which the hydraulic control unit according to the present invention is employed in a brake system equipped with one hydraulic circuit, the number of hydraulic circuits in a brake system employing the hydraulic control unit according to the present invention is not limited to one. A brake system employing the hydraulic control unit according to the present invention may be equipped with two or more hydraulic circuits.

[0013] Furthermore, the configurations and operations described below are merely examples, and the present invention is not limited to such configurations and operations. In addition, in each figure, the same or similar components or parts may be denoted by the same reference numeral, or the reference numeral may be omitted. Also, detailed structures have been simplified or omitted from the illustrations as appropriate.

[0014] As shown in Figures 1 and 2, the brake system 10 is mounted on the saddle-type vehicle 200. In Figure 1, the saddle-type vehicle 200 is a motorcycle powered by an engine or motor. The saddle-type vehicle 200 may be any other type of saddle-type vehicle besides a motorcycle. Other types of saddle-type vehicles besides motorcycles include, for example, bicycles (e.g., two-wheeled, three-wheeled, etc.), three-wheeled vehicles powered by at least one of an engine and an electric motor, and buggies. Here, "bicycle" refers to any vehicle that can be propelled on the road by the force applied to the pedals. In other words, bicycles include regular bicycles, electric assist bicycles, electric bicycles, etc. Also, "two-wheeled vehicle" or "three-wheeled vehicle" refers to a so-called motorcycle, and examples of motorcycles include motorcycles, scooters, electric scooters, etc.

[0015] The saddle-type vehicle 200 comprises a body 1, a handle 2 rotatably held on the body 1, a front wheel 3 rotatably held on the body 1 together with the handle 2, and a rear wheel 4 rotatably held on the body 1.

[0016] The brake system 10 includes, for example, a brake lever 11 and a hydraulic circuit 12 filled with brake fluid. The brake lever 11 is, for example, located on the handlebars 2 and operated by the rider's hand. The hydraulic circuit 12 generates a braking force on the front wheel rotor 3a, which rotates with the front wheel 3, in accordance with the amount of operation of the brake lever 11. Similarly, a braking force is generated on the rear wheel rotor 4a, which rotates with the rear wheel 4, in accordance with the amount of operation of the brake pedal 13. The brake pedal 13 is, for example, located at the bottom of the body 1 and operated by the driver's foot. The hydraulic control unit 100 and the brake system 10 may adjust the braking force by, for example, adjusting the pressure of the brake fluid in accordance with the amount of operation of the brake lever 11 and the brake pedal 13.

[0017] The brake lever 11 and the brake pedal 13 are examples of the input portions of the brakes in the braking system 10. For example, as the input portion of the brake replacing the brake lever 11, a brake pedal different from the brake pedal 13 provided on the body 1 may be used. Further, for example, as the input portion of the brake replacing the brake pedal 13, a brake lever different from the brake lever 11 provided on the handle 2 may be used.

[0018] The hydraulic circuit 12 includes, for example, a master cylinder 21 incorporating a piston (not shown), a reservoir 22 attached to the master cylinder 21, a brake caliper 23 having brake pads (not shown), and a wheel cylinder 24 that operates the brake pads of the brake caliper 23.

[0019] In the base body 110 of the hydraulic control unit 100, for example, an internal flow path 40 that connects the wheel cylinder 24 and the master cylinder 21 is formed. That is, an internal flow path 40 through which the brake fluid flows is formed in the base body 110. The internal flow path 40 communicates with the master cylinder 21 via a liquid pipe 15 described later, and communicates with the wheel cylinder 24 via a liquid pipe 16 described later. In the present embodiment, a main flow path 41 and a sub-flow path 42 are formed in the base body 110 as the internal flow path 40. In the hydraulic circuit 12, the master cylinder 21 and the wheel cylinder 24 communicate with each other via a liquid pipe 15 connected between the master cylinder 21 and a master cylinder port MP formed in the base body 110, the main flow path 41 formed in the base body 110, and a liquid pipe 16 connected between the wheel cylinder 24 and a wheel cylinder port WP formed in the base body 110. Further, the brake fluid in the wheel cylinder 24 is discharged to a middle portion 41a of the main flow path, which is a middle portion of the main flow path 41, via the sub-flow path 42.

[0020] In a region on the wheel cylinder 24 side of the main flow path 41 rather than the middle part 41a of the main flow path in the main flow path 41, for example, a filling valve 25 is provided. By the opening and closing operation of the filling valve 25, the flow path portion at the installation location of the filling valve 25 in the main flow path 41 is opened and closed, and the flow rate of the brake fluid flowing through this region is controlled. In the sub-flow path 42, for example, in order from the upstream side (that is, the wheel cylinder 24 side), a release valve 26, an accumulator 27 for storing the brake fluid, and a pump device 50 are provided. That is, the pump device 50 is provided in the internal flow path 40. By the opening and closing operation of the release valve 26, the flow path portion at the installation location of the release valve 26 in the sub-flow path 42 is opened and closed, and the flow rate of the brake fluid flowing through this region is controlled. The pump device 50 applies pressure to the brake fluid in the sub-flow path 42 and moves the brake fluid. The type of the pump device 50 is not particularly limited, but as in the example shown in FIG. 3, the pump device 50 is, for example, a reciprocating pump.

[0021] Also, in a region on the master cylinder 21 side of the main flow path 41 rather than the filling valve 25 in the main flow path 41, for example, a master cylinder hydraulic pressure sensor 30 for detecting the hydraulic pressure of the brake fluid of the master cylinder 21 is provided. Also, in a region on the wheel cylinder 24 side of the main flow path 41 rather than the filling valve 25 in the main flow path 41, for example, a wheel cylinder hydraulic pressure sensor 31 for detecting the hydraulic pressure of the brake fluid of the wheel cylinder 24 is provided.

[0022] That is, the main flow path 41 communicates the master cylinder port MP and the wheel cylinder port WP via the filling valve 25. Also, the sub-flow path 42 is part or all of the flow path for discharging the brake fluid of the wheel cylinder 24 to the master cylinder 21 via the release valve 26. That is, the sub-flow path 42 also communicates the master cylinder port MP and the wheel cylinder port WP.

[0023] The suction valve 25 is a solenoid valve that, for example, switches the flow of brake fluid at its installation location from open to closed when the system is energized from a non-energized state. The release valve 26 is a solenoid valve that, for example, switches the flow of brake fluid toward the accumulator 27 via its installation location from closed to open when the system is energized from a non-energized state.

[0024] The pump device 50 of the hydraulic circuit 12 can be driven by a motor unit 70. In other words, the motor unit 70 is the power source for the pump device 50.

[0025] As shown in Figure 2, the hydraulic control unit 100 comprises a base body 110, various components provided on the base body 110 (such as a suction valve 25, a release valve 26, an accumulator 27, a master cylinder hydraulic pressure sensor 30, a wheel cylinder hydraulic pressure sensor 31, a pump device 50, a motor unit 70, etc.), and a control unit (ECU) 60. The specific configuration of the hydraulic control unit 100 will be described later.

[0026] The control device 60 controls the sealing valve 25, the release valve 26, and the motor unit 70. The control device 60 may be a single unit or may be divided into multiple units. The control device 60 may be attached to the base body 110 or to other components other than the base body 110. Furthermore, part or all of the control device 60 may be composed of, for example, a microcontroller, a microprocessor unit, or an updatable component such as firmware, or a program module executed by commands from a CPU or the like. In this embodiment, as will be described later, at least a part of the control device 60 is configured as a control board 61.

[0027] For example, under normal conditions, the control device 60 controls the loading valve 25 and the release valve 26 to a de-energized state. In this state, when the brake lever 11 is operated, the piston (not shown) of the master cylinder 21 is pushed in, increasing the hydraulic pressure of the brake fluid in the wheel cylinder 24, and the brake pads (not shown) of the brake caliper 23 are pressed against the front rotor 3a of the front wheel 3, thereby braking the front wheel 3.

[0028] The control device 60 receives the outputs from each sensor (master cylinder hydraulic pressure sensor 30, wheel cylinder hydraulic pressure sensor 31, wheel speed sensor, acceleration sensor, etc.). In response to these outputs, the control device 60 outputs commands that control the operation of the fill valve 25, the release valve 26, and the motor unit 70, and performs pressure reduction control operations, etc.

[0029] For example, if the control device 60 detects an excess of brake fluid pressure in the wheel cylinder 24, or the possibility of such pressure becoming excessive, it performs a pressure reduction control operation in the hydraulic circuit 12 to reduce the brake fluid pressure in the wheel cylinder 24. At that time, the control device 60 controls the fill valve 25 to be energized and the release valve 26 to be energized in the hydraulic circuit 12, while driving the motor unit 70. As a result, the brake fluid in the wheel cylinder 24 flows through the main passage 41 to the sub-passage 42, and the fluid pressure in the wheel cylinder 24 decreases. The brake fluid that has flowed from the wheel cylinder 24 to the sub-passage 42 then flows through the release valve 26 to the accumulator 27 and is stored in the accumulator 27. The brake fluid stored in the accumulator 27 is then returned to the master cylinder 21 by a pump device 50 driven by the motor unit 70. In other words, the hydraulic control unit 100 can control the hydraulic pressure of the brake fluid in the wheel cylinder 24 to perform a pressure reduction control operation (in other words, an anti-lock brake operation) of the hydraulic circuit 12.

[0030] <Configuration of the hydraulic control unit> Figure 3 is a partial cross-sectional view of the hydraulic control unit 100 according to this embodiment, observed from the side. Figure 4 is an enlarged view of part α in Figure 3. Figure 5 is a diagram showing the inside of the hydraulic control unit 100 according to this embodiment. Specifically, Figure 5 is a view of the hydraulic control unit 100 with the control board housing 120 (described later) removed from the base body 110, as seen in the observation direction Z shown in Figure 3. The observation direction Z is the observation direction along the rotation axis 74e of the output shaft 74 (described later) of the motor unit 70. Note that the base body 110 in Figures 3 and 5 shows the state before the plastic deformation portion 115 is formed. However, for explanatory purposes, the plastic deformation portion 115 is shown with dashed lines in Figures 3 and 5.

[0031] The base body 110 is made of a metal such as an aluminum alloy. The shape of the base body 110 is not particularly limited, but for example, it is a roughly rectangular parallelepiped. Each side surface of the base body 110 may be flat, include curved portions, or include steps. A motor unit 70 is provided on one side surface 110a of the base body 110. A suction valve 25 and a release valve 26 may be further provided on surface 110a of the base body 110. The motor unit 70, suction valve 25 and release valve 26 may be covered by a control board housing 120, for example, which houses a control board 61. In this case, the motor unit 70, suction valve 25 and release valve 26 are electrically connected to the control board 61 by terminals, for example. That is, in the hydraulic control unit 100 according to this embodiment, the motor unit 70 is arranged in a space enclosed by the base body 110 and the control board housing 120. The hydraulic control unit 100 configured in this way can be made smaller than when the motor unit 70 is located outside the control board housing 120. The motor unit 70 may also be located outside the control board housing 120.

[0032] The motor unit 70 includes a stator 71, a rotor 72, a housing 73 that houses the stator 71 and the rotor 72, and an output shaft 74 connected to the rotor 72.

[0033] As shown in Figure 3, in this embodiment, the motor unit 70 is configured to drive the pump device 50 with the output shaft 74 of the motor unit 70 without using a reduction mechanism. This makes it possible to reduce the number of parts and make the hydraulic control unit 100 more compact.

[0034] In a configuration in which the pump device 50 is driven by the output shaft 74 of the motor unit 70 without the use of such a reduction mechanism, conventionally, for example, a configuration in which the output shaft 74 is inserted into a bearing provided on the base body 110 may be adopted. In this case, when assembling the hydraulic control unit 100, a method may be adopted in which the output shaft 74 is inserted into the bearing before installing the motor unit 70 and the bearing on the base body 110. On the other hand, as mentioned above, there is a demand for a hydraulic control unit that can be easily assembled. Therefore, even in a configuration in which the pump device 50 is driven by the output shaft 74 of the motor unit 70 without the use of a reduction mechanism, it is desirable to make the hydraulic control unit easy to assemble.

[0035] In contrast, in the hydraulic control unit 100 of this embodiment, as shown in Figure 3, the output shaft 74 of the motor unit 70 connected to the rotor 72 is inserted into a hole 111 formed in the base body 110 and is rotatably supported by the hole 111. In other words, the base body 110 is provided with a hole 111 that rotatably supports the output shaft 74. Because the base body 110 is provided with a hole 111, in a configuration in which the pump device 50 is driven by the output shaft 74 of the motor unit 70 without going through a reduction mechanism, the output shaft 74 is rotatably supported without having to provide a bearing like the one described above in the base body 110. In other words, the number of parts in the hydraulic control unit 100 can be reduced. As a result, in the assembly of the hydraulic control unit 100, the step of inserting the output shaft 74 into the bearing is not required. Furthermore, in this embodiment, the insertion of the output shaft 74 into the hole 111 only needs to be done when assembling the motor unit 70 to the base body 110. For these reasons, the hydraulic control unit 100 can be made to be easily assembled.

[0036] In the examples shown in Figures 3 and 4, the hole 111 is a bottomed hole. That is, in the examples shown in Figures 3 and 4, the end 74a of the output shaft 74 that is on the pump device 50 side of the housing 73 in the axial direction of the output shaft 74 is inserted into the hole 111. The hole 111 is not limited to this, and can be any form that can rotatably support the output shaft 74. For example, the end 74a of the output shaft 74 may not be inserted into the hole 111, and the output shaft 74 may pass through the hole 111. That is, the hole 111 may be, for example, a through hole.

[0037] A lubricant may be applied to at least one of the inner wall 111a of the hole 111 and the portion 74b of the output shaft 74 inserted into the hole 111 (specifically, the outer circumferential surface of the portion 74b). A known lubricant may be used as the lubricant.

[0038] Furthermore, as shown in Figures 3 and 4, it is preferable that a gap 112 is provided between the bottom 111b of the hole 111 and the tip 74c of the portion 74b of the output shaft 74 that is inserted into the hole 111.

[0039] Furthermore, as shown in Figures 3 and 4, it is preferable that a gap 113 is provided between the outer circumferential surface 74d of the output shaft 74 and the inner wall 111a of the hole 111.

[0040] The hole 111 can be formed in the base body 110 by, for example, using a cutting tool such as a drill, or by plastically deforming the base body 110.

[0041] Furthermore, the output shaft 74 may be supported not only by the hole 111 but also by a bearing 76 provided in the motor unit 70, for example. The bearing 76 is provided, for example, in the housing 73. This allows the rotor 72, which is positioned on the inner circumference side of the stator 71, to rotate on the inner circumference side of the stator 71 without interfering with the stator 71. In addition, the motor unit 70 may be provided with bearings other than the bearing 76 (not shown).

[0042] In the case where the pump device 50 is a reciprocating pump as shown in Figure 3, for example, an eccentric part 75 that rotates eccentrically relative to the rotation axis 74e of the motor unit 70 may be attached to the output shaft 74 of the motor unit 70. Then, the eccentric rotational motion of the eccentric part 75 presses one end of the plunger 51 of the pump device 50 against the eccentric part 75, and the pump device 50 is driven by the reciprocating motion of the plunger 51. In this configuration, where the pump device 50 is driven by the output shaft 74 of the motor unit 70 without a reduction mechanism, the radial load acting on the output shaft 74 when the pump device 50 is driven is supported as shown in Figure 3. Specifically, the base body 110 is provided with a hole 111, and the output shaft 74 of the motor unit 70 is inserted into the hole 111 and rotatably supported by the hole 111. As described above, the brake system employing the hydraulic control unit 100 according to the present invention may have two or more hydraulic circuits. Therefore, in a hydraulic control unit 100 that can be used in a brake system equipped with two or more hydraulic circuits, two or more plungers 51 may be provided.

[0043] The motor unit 70 may further include a cover 80 that covers at least a portion of the outer circumferential surface of the housing 73. The cover 80 is located outside the housing 73. The cover 80 is made of a metal, such as electrical steel. The cover 80 includes a cylindrical portion 81 that covers the outer circumferential side of the housing 73 and a flange portion 82 that protrudes from the outer circumferential surface of the cylindrical portion 81. The flange portion 82 may be formed integrally with the cylindrical portion 81, or it may be formed separately from the cylindrical portion 81 and fixed to the cylindrical portion 81 by welding or the like. In the example in Figure 3, the flange portion 82 is formed integrally with the cylindrical portion 81. The cover 80 can be connected to the housing 73 by adhesive, welding, or the like.

[0044] When the motor unit 70 is equipped with a cover 80, the base body 110 has a recess 114 into which the flange portion 82 is inserted, and a plastically deformable portion 115 that protrudes inward from the recess 114. The motor unit 70 is fixed to the base body 110 by the flange portion 82 being sandwiched between the bottom 114a of the recess 114 and the plastically deformable portion 115. In other words, the motor unit 70 is fixed to the base body 110 by a so-called crimping process. This reduces the space required for fasteners such as bolts to fix the motor unit 70 to the base body 110, and allows for miniaturization of the hydraulic control unit 100. In other words, by adopting such a structure, the hydraulic control unit 100 can be made more applicable to saddle-type vehicles 200.

[0045] The plastically deformed portion 115 is formed, for example, by pressing a jig against the stepped portions 114b formed at multiple locations on the edge of the recess 114, thereby plastically deforming the inner wall of the recess 114.

[0046] <Assembly of the hydraulic control unit> The assembly of the hydraulic control unit 100 according to the present invention will be described below.

[0047] (Attaching the cover to the housing) If a cover 80 is provided for the motor unit 70, in this step, the cover 80 is attached to the housing 73 that houses the stator 71 and rotor 72.

[0048] The method of attaching the cover 80 to the housing 73 is not particularly limited, but may include, for example, attaching it using adhesive or attaching it by welding.

[0049] (Motor unit assembly onto the base) In this step, the motor unit 70 is assembled to the base body 110, which is provided with the hole 111.

[0050] First, the eccentric portion 75 is attached to the output shaft 74, and then the tip of the output shaft 74 is inserted into the hole 111 provided in the base body 110. Then, multiple points on the flange portion 82 of the motor unit 70 are pressed with a jig toward the bottom 114a of the recess 114, causing the flange portion 82 to come into contact with the bottom 114a. Next, the jig is pressed against the stepped portion 114b to form a plastically deformed portion 115, and the flange portion 82 of the cover 80 is sandwiched between the bottom 114a of the recess 114 and the plastically deformed portion 115, thereby fixing the motor unit 70 to the base body 110.

[0051] In the above explanation, an example was described in which a base body 110 with pre-formed holes 111 is used in this process, but the method is not limited to this. For example, a step of forming (creating) holes 111 in the base body 110 may be performed before this process, and this process may be performed using the base body 110 with holes 111 already formed in that step.

[0052] <Effects of the hydraulic control unit> The effects of the hydraulic control unit 100 according to this embodiment will be explained.

[0053] The hydraulic control unit 100 is a hydraulic control unit 100 for a saddle-type vehicle 200, and comprises a base body 110 in which an internal passage 40 through which brake fluid flows is formed, a pump device 50 provided in the internal passage 40, and a motor unit 70 which is the drive source for the pump device 50 and comprises a stator 71, a rotor 72, a housing 73 that accommodates the stator 71 and the rotor 72, and an output shaft 74 connected to the rotor 72, the motor unit 70 being fixed to the base body 110, and furthermore, the base body 110 is provided with a hole 111 that rotatably supports the output shaft 74.

[0054] In this configuration, the base body 110 is provided with a hole 111 that rotatably supports the output shaft 74, thereby enabling the pump device 50 to be driven by the output shaft 74 of the motor unit 70 without the need for a reduction gear mechanism. In this configuration, the output shaft 74 is supported without the need to provide a bearing in the base body 110 as described above. In other words, the number of parts in the hydraulic control unit 100 can be reduced. As a result, in the assembly of the hydraulic control unit 100, it is not necessary to use a bearing to be provided in the base body 110, and the process of inserting the output shaft 74 into the bearing is not required. Furthermore, in this embodiment, the insertion of the output shaft 74 into the hole 111 only needs to be done when assembling the motor unit 70 to the base body 110. For these reasons, the hydraulic control unit 100 can be made easily assembled.

[0055] Furthermore, it is preferable that a lubricant be applied to at least one of the inner wall 111a of the hole 111 and the portion 74b of the output shaft 74 that is inserted into the hole 111. During the operation of the motor unit 70 and the pump device 50, it is conceivable that slight deformation of the output shaft 74 may occur due to the movement of the eccentric portion 75 and the plunger 51, causing the output shaft 74 to come into contact with the inner wall 111a of the hole 111. At this time, by applying a lubricant to at least one of the inner wall 111a of the hole 111 and the portion 74b of the output shaft 74 that is inserted into the hole 111, friction that may occur between the output shaft 74 and the inner wall 111a of the hole 111 can be reduced, making it easier to rotate the output shaft 74.

[0056] Furthermore, it is preferable that the hole 111 is a closed-end hole. This reduces the possibility of brake fluid leaking from the base 110 to the outside of the base 110.

[0057] Furthermore, it is preferable that a gap 112 is provided between the bottom 111b of the hole 111 and the tip 74c of the portion 74b of the output shaft 74 that is inserted into the hole 111. This reduces the resistance to rotation of the output shaft 74, making it easier to rotate the output shaft 74.

[0058] Furthermore, it is preferable that a gap 113 is provided between the outer circumferential surface 74d of the output shaft 74 and the inner wall 111a of the hole 111. This reduces the resistance to rotation of the output shaft 74, making it easier to rotate the output shaft 74.

[0059] Furthermore, the motor unit 70 further includes a cover 80 that covers at least a portion of the outer circumferential surface of the housing 73, the cover 80 includes a flange portion 82, and the base body 110 has a recess 114 into which the flange portion 82 is inserted and a plastically deformable portion 115 that protrudes inward from the recess 114, and it is preferable that the motor unit 70 is fixed to the base body 110 by the flange portion 82 being sandwiched between the bottom portion 114a of the recess 114 and the plastically deformable portion 115. This reduces the space required for fasteners such as bolts to fix the motor unit 70 to the base body 110, and allows for miniaturization of the hydraulic control unit 100. In other words, by adopting such a structure, the hydraulic control unit 100 can be made more applicable to saddle-type vehicles 200.

[0060] As described above, the hydraulic control unit according to the present invention includes the following embodiments. [1] A hydraulic control unit (100) for a saddle-type vehicle (200), comprising: a base body (110) having an internal passage (40) through which brake fluid flows; a pump device (50) provided in the internal passage (40); and a motor unit (70) which is a drive source for the pump device (50) and comprises a stator (71), a rotor (72), a housing (73) housing the stator (71) and the rotor (72), and an output shaft (74) connected to the rotor (72), wherein the motor unit (70) is fixed to the base body (110), and further, the base body (110) is provided with a hole (111) that rotatably supports the output shaft (74). [2] The hydraulic control unit (100) according to [1], wherein a lubricant is applied to at least one of the inner wall (111a) of the hole (111) and the portion (74b) of the output shaft (74) that is inserted into the hole (111). [3] The hole (111) is a bottomed hole, the hydraulic control unit (100) as described in [1] or [2]. [4] A gap (112) is provided between the bottom (111b) of the hole (111) and the tip (74c) of the portion (74b) of the output shaft (74) that is inserted into the hole (111), the hydraulic control unit (100) as described in [3]. [5] A hydraulic control unit (100) according to any one of [1] to [4], wherein a gap (113) is provided between the outer circumferential surface (74d) of the output shaft (74) and the inner wall (111a) of the hole (111). [6] The motor unit (70) further comprises a cover (80) that covers at least a portion of the outer circumferential surface of the housing (73), the cover (80) comprises a flange portion (82), the base body (110) has a recess (114) into which the flange portion (82) is inserted and a plastically deformable portion (115) that protrudes inward from the recess (114), and the motor unit (70) is fixed to the base body (110) by the flange portion (82) being sandwiched between the bottom portion (114a) of the recess (114) and the plastically deformable portion (115), as described in any of [1] to [5].

[0061] Furthermore, the saddle-type vehicle according to the present invention includes the following embodiments. A saddle-type vehicle (200) equipped with a hydraulic control unit (100) as described in any of [7][1] to [6]. [Explanation of Symbols]

[0062] 1 Body, 2 Handle, 3 Front wheel, 3a Front wheel rotor, 4 Rear wheel, 4a Rear wheel rotor, 10 Brake system, 11 Brake lever, 12 Hydraulic circuit, 13 Brake pedal, 15 Fluid pipe, 16 Fluid pipe, 21 Master cylinder, 22 Reservoir, 23 Brake caliper, 24 Wheel cylinder, 25 Fill valve, 26 Release valve, 27 Accumulator, 30 Master cylinder hydraulic sensor, 31 Wheel cylinder hydraulic sensor, 40 Internal flow path, 41 Main flow path, 41a Main flow path section, 42 Sub-flow path, 50 Pump device, 51 Plunger, 60 Control device, 61 Control board, 70 Motor unit, 71 Stator, 72 Rotor, 73 Housing, 74 Output shaft, 74a End, 74b Inserted into hole, 74c Tip, 74d Outer surface, 74e Rotating shaft, 75 Eccentric part, 80 Cover, 81 Cylindrical part, 82 Flange part, 110 Base body, 110a Surface, 111 Hole, 111a Inner wall, 111b Bottom, 112 Gap, 113 Gap, 114 Recess, 114a Bottom, 114b Step, 115 Plastically deformed part, 120 Housing for control board, 200 Saddle-type vehicle, MP Master cylinder port, WP Wheel cylinder port

Claims

1. A hydraulic control unit (100) for a saddle-type vehicle (200), A base body (110) having an internal passage (40) through which brake fluid flows, A pump device (50) is provided in the internal flow path (40), The pump device (50) is driven by a motor unit (70) comprising a stator (71), a rotor (72), a housing (73) that accommodates the stator (71) and the rotor (72), and an output shaft (74) connected to the rotor (72), Equipped with, The motor unit (70) is fixed to the base (110), Furthermore, the base body (110) is provided with a hole (111) that rotatably supports the output shaft (74). Hydraulic control unit (100).

2. A lubricant is applied to at least one of the inner wall (111a) of the hole (111) and the portion (74b) of the output shaft (74) that is inserted into the hole (111). The hydraulic control unit (100) according to claim 1.

3. The aforementioned hole (111) is a bottomed hole. The hydraulic control unit (100) according to claim 1.

4. A gap (112) is provided between the bottom (111b) of the hole (111) and the tip (74c) of the portion (74b) of the output shaft (74) that is inserted into the hole (111). The hydraulic control unit (100) according to claim 3.

5. A gap (113) is provided between the outer circumferential surface (74d) of the output shaft (74) and the inner wall (111a) of the hole (111). The hydraulic control unit (100) according to claim 1.

6. The motor unit (70) further comprises a cover (80) that covers at least a portion of the outer surface of the housing (73), The cover (80) is provided with a flange portion (82), The base body (110) has a recess (114) into which the flange portion (82) is inserted, and a plastically deformed portion (115) that protrudes inward from the recess (114). The motor unit (70) is fixed to the base (110) by the flange portion (82) being sandwiched between the bottom portion (114a) of the recess (114) and the plastically deformed portion (115). A hydraulic control unit (100) according to any one of claims 1 to 5.

7. A saddle-type vehicle (200) equipped with a hydraulic control unit (100) according to any one of claims 1 to 5.

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