Hydraulic control unit, saddle-riding type vehicle, and method for manufacturing hydraulic control unit

Abstract

Provided is a hydraulic control unit for a saddle-riding type vehicle in which fixing of a motor unit to a base body while being displaced from a prescribed position can be suppressed as compared with the conventional art. A hydraulic control unit according to the present invention comprises: a base body; and a motor unit having a stator, a rotor, an output shaft fixed to the rotor, and a cover provided on the outer peripheral side of the stator. The cover includes a cylindrical part covering the outer peripheral side of the stator and a flange protruding from the outer peripheral surface of the cylindrical part. The base body is provided with a first recess and a plastic deformation part protruding toward the inner peripheral side of the first recess. The motor unit is fixed to the base body with the flange clamped between the bottom portion of the first recess and the plastic deformation part. The base body is further provided with a second recess formed in the bottom portion of the first recess and includes a press-fitting part in which the cylindrical part is press-fitted into the inner peripheral wall of the second recess.

Description

[0001]

Document Name

[0002]

Title of the Invention

Technical Field

[0003]

.001

[0004]

Background Art

[0005]

.002

[0006]

〇003

[0007] [〇 0 0 4] Specifically, the motor unit comprises a stator, a rotor, an output shaft fixed to the rotor, and a cover provided on the outer circumference of the stator. The cover comprises a cylindrical portion that covers the outer circumference of the stator and a flange that protrudes from the outer surface of the cylindrical portion to the outside of the cylindrical portion. The base body has a recess into which the flange is inserted. The flange is sandwiched between a plastically deformed portion formed by plastically deforming the edge of the recess and the bottom of the recess. More specifically, the motor unit is pressed toward the bottom of the recess, and the flange of the motor unit comes into contact with the bottom of the recess. Then, the edge of the recess is plastically deformed to form a plastically deformed portion, and the flange is sandwiched between the bottom of the recess and the plastically deformed portion. In this way, the motor unit is fixed to the base body.

[0008] [Prior art documents]

[0009] [Patent Documents]

[0010]

〇 0 0 5

[0011] [Patent Document 1] Japanese Unexamined Patent Publication No. 2018-8676

[0012] [Summary of the Invention]

[0013] [Problems the invention aims to solve]

[0014] [〇 0 0 6] If the motor unit is fixed to the base in a position shifted from its specified location, the load acting laterally on the motor unit's output shaft may become excessive. Specifically, the lateral direction refers to the direction lateral to the direction in which the motor unit's output shaft extends. Hereafter, this direction will simply be referred to as the lateral direction. For this reason, in conventional hydraulic control units that fix the motor unit to the base using crimping, it was necessary to consider that the motor unit would be pushed laterally and shifted from its specified position when forming the plastically deformed portion.

[0015] [〇 0 0 7] The present invention was made against the backdrop of the above-mentioned problems, and its first objective is to provide a hydraulic control unit in which a motor unit is fixed to a base using a crimping process, and which can suppress the motor unit from being fixed to the base in a position that is shifted from a specified position to a position that is that of the conventional. The second objective of the present invention is to provide a saddle-type vehicle equipped with such a hydraulic control unit. The third objective of the present invention is to provide a method for manufacturing a hydraulic control unit in which a motor unit is fixed to a base using a crimping process, and which can suppress the motor unit from being fixed to the base in a position that is shifted from a specified position to a position that is that of the conventional.

[0016] [Means for solving the problem]

[0017] [0 0 0 8] The hydraulic control unit according to the present invention is a hydraulic control unit mounted on a saddle-type vehicle, comprising: a base body having an internal passage through which brake fluid flows; a motor unit which is a drive source for a pump device provided in the internal passage, and having a stator, a rotor, an output shaft fixed to the rotor, and a cover provided on the outer circumference of the stator, wherein the cover comprises a cylindrical portion that covers the outer circumference of the stator, and a flange that protrudes from the outer surface of the cylindrical portion to the outside of the cylindrical portion, wherein the base body has a first recess into which the flange is inserted, and a plastically deformable portion that protrudes to the inner circumference of the first recess, wherein the motor unit is fixed to the base body with the flange sandwiched between the bottom of the first recess and the plastically deformable portion, wherein the base body has a second recess formed at the bottom of the first recess, and the cylindrical portion is It is equipped with press-fit portions that are press-fitted into the inner circumferential wall of the two recesses.

[0018] [0 0 0 9] Furthermore, the saddle-type vehicle according to the present invention is equipped with a hydraulic control unit according to the present invention.

[0019] [0 0 1 0] Furthermore, the method for manufacturing a hydraulic control unit according to the present invention is a method for manufacturing a hydraulic control unit to be mounted on a saddle-type vehicle, wherein the hydraulic control unit comprises a base body having an internal passage through which brake fluid flows, a motor unit which is a drive source for a pump device provided in the internal passage, and has a stator, a rotor, an output shaft fixed to the rotor, and a cover provided on the outer circumference of the stator, wherein the cover comprises a cylindrical portion that covers the outer circumference of the stator, and a flange that protrudes from the outer surface of the cylindrical portion to the outside of the cylindrical portion, wherein a first recess is formed in the base body, and further, a second recess is formed at the bottom of the first recess, a press-fitting step of inserting the flange into the first recess and press-fitting the cylindrical portion into the inner circumferential wall of the second recess, and a plastic deformation step of forming a plastic deformation portion by plastically deforming the edge of the first recess toward the inner circumferential side of the first recess, and The process includes a fixing step of fixing the motor unit to the base body by sandwiching the flange between the bottom of the recess and the plastically deformed portion.

[0020] [Effects of the Invention]

[0021] [0 0 1 1] The hydraulic control unit according to the present invention is equipped with a press-fit portion in which the cylindrical portion of the motor unit cover is press-fitted into the inner circumferential wall of a second recess formed in the base body. Therefore, in the hydraulic control unit according to the present invention, even if the motor unit is pushed laterally when forming the plastically deformed portion, the press-fit portion can suppress the lateral movement of the motor unit. Accordingly, the hydraulic control unit according to the present invention can suppress the displacement of the motor unit from a specified position more effectively than conventional designs.

[0022] [Brief explanation of the drawing]

[0023] [0 0 1 2]

[0024] [Figure 1] This figure shows 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.

[0025] [Figure 2] This figure shows the configuration of a brake system equipped with a hydraulic control unit according to an embodiment of the present invention.

[0026] [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.

[0027] [Figure 4] This figure shows the inside of a hydraulic control unit according to an embodiment of the present invention.

[0028] [Figure 5] This figure shows the motor unit of a hydraulic control unit according to an embodiment of the present invention.

[0029] [Figure 6] This is a flowchart illustrating a method for manufacturing a hydraulic control unit according to an embodiment of the present invention.

[0030] [Figure 7] This figure illustrates a modified example of a hydraulic control unit according to an embodiment of the present invention, and is a partial cross-sectional view of the hydraulic control unit as seen from the side.

[0031] [Figure 8] This figure illustrates a modified example of a hydraulic control unit according to an embodiment of the present invention, and shows the motor unit of the hydraulic control unit.

[0032] [Modes for Carrying Out the Invention]

[0033] [0 0 1 3] Below, an example of a hydraulic control unit, a saddle-type vehicle, and a method for manufacturing the hydraulic control unit according to the present invention will be described with reference to the drawings. In the following, an example in which the hydraulic control unit according to the present invention is mounted on a motorcycle, which is an example of a saddle-type vehicle, will be described, but the hydraulic control unit according to the present invention may be mounted on other saddle-type vehicles other than motorcycles. Other saddle-type vehicles other than motorcycles include, for example, bicycles (e.g., two-wheeled vehicles, three-wheeled vehicles, etc.), three-wheeled vehicles that use at least one of an engine and an electric motor as a drive source, and buggies, etc. Furthermore, a bicycle refers to any vehicle that can be propelled on the road by the force applied to the pedals. In other words, bicycles include ordinary bicycles, electric assist bicycles, electric bicycles, etc. Furthermore, two-wheeled vehicles or three-wheeled vehicles refer to what are commonly known as motorcycles, and motorcycles include motorcycles, scooters, electric scooters, etc.

[0034] [0 0 1 4] 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 in which the hydraulic control unit according to the present invention is employed is not limited to one. A brake system in which the hydraulic control unit according to the present invention is employed may be equipped with two or more hydraulic circuits.

[0035] [0 0 1 5] Furthermore, the configurations and operations described below are examples, and the present invention is not limited to such configurations and operations. Also, in each figure, the same reference numerals may be used for identical or similar members or parts, or the reference numerals may be omitted. In addition, detailed structures may be simplified or omitted from the illustration as appropriate.

[0036]

[0016] Embodiment.

[0037] <Configuration and Operation of Brake System for Saddle-Type Vehicles> The configuration and operation of a brake system equipped with a hydraulic control unit according to this embodiment will be described. Figure 1 is a diagram showing the configuration of a saddle-type vehicle equipped with a brake system equipped with a hydraulic control unit according to an embodiment of the present invention. Figure 2 is a diagram showing the configuration of a brake system equipped with a hydraulic control unit according to an embodiment of the present invention.

[0038] [0 0 1 7] As shown in Figures 1 and 2, the brake system 1 is mounted on a saddle-type vehicle 200. The saddle-type vehicle 200 is, for example, a motorcycle powered by an engine or motor. The saddle-type vehicle 200 includes a body 1, a handle 2 rotatably held on the body 1, a front wheel 3 rotatably held on the body 1 together with the handle 2, and a rear wheel 4 rotatably held on the body 1.

[0039] [0 0 1 8] The brake system 1 comprises a brake lever 11 and a hydraulic circuit 12 filled with brake fluid. The brake lever 11 is located on the handle 2 and is operated by the driver's hand. The hydraulic circuit 12 generates a braking force on the rotor 3a, which rotates with the front wheel 3, in accordance with the amount of operation of the brake lever 11. In addition, a braking force is generated on the 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 located at the bottom of the body 1 and is operated by the driver's foot. The mechanism that generates braking force in accordance with the amount of operation of the brake pedal 1 3 may be a mechanism that generates braking force by increasing the pressure of the brake fluid, or it may be a mechanism that generates braking force mechanically (for example, a mechanism that generates braking force by creating tension in a wire).

[0040] [0 0 1 9] Here, the brake lever 11 and brake pedal 13 are examples of brake input parts. For example, a brake pedal other than the brake pedal 13 provided on the body 1 may be used as a brake input part that replaces the brake lever 11. Also, for example, a brake lever other than the brake lever 11 provided on the handle 2 may be used as a brake input part that replaces the brake pedal 13.

[0041] [ 0 0 2 0 ] The hydraulic circuit 1 2 includes a master cylinder 2 1 having a piston (not shown), a reservoir 2 2 attached to the master cylinder 2 1, a brake caliper 2 3 having brake pads (not shown), and a wheel cylinder 2 4 that operates the brake pads (not shown) of the brake caliper 2 3.

[0042] [0 0 2 1] The base 1 1 0 of the hydraulic control unit 1 0 0 has an internal passage 4 0 that connects the wheel cylinder 2 4 and the master cylinder 2 1. That is, the base 1 1 0 has an internal passage 4 0 through which brake fluid flows. The internal passage 4 0 is in communication with the master cylinder 2 1 via a liquid pipe 1 5 described later, and is in communication with the wheel cylinder 2 4 via a liquid pipe 1 6 described later. In this embodiment, the base 1 1 0 has a main passage 4 1 and a sub-passage 4 2 formed as the internal passage 4 0. In the hydraulic circuit 12, the master cylinder 21 and the wheel cylinder 24 are connected via a fluid pipe 15 between the master cylinder 21 and the master cylinder port MP formed in the base 11〇, a main flow path 41 formed in the base 11〇, and a fluid pipe 16 between the wheel cylinder 24 and the wheel cylinder port WP formed in the base 11〇. In addition, the brake fluid from the wheel cylinder 24 is released via a sub-flow path 42 to a main flow path intermediate section 41a, which is an intermediate part of the main flow path 41.

[0043]

[0022] In the region on the wheel cylinder 24 side of the middle part 41a of the main flow path 41, a filling valve 25 is provided. By the opening and closing operation of the filling valve 25, the flow path portion at the installation position 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, in order from the upstream side, a releasing 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 releasing valve 26, the flow path portion at the installation position of the releasing 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. That is, the pump device 50 moves the brake fluid in the internal flow path 40. The type of the pump device 50 is not particularly limited.

[0044]

[0023] Also, in the region on the master cylinder 21 side of the main flow path 41 with respect to the filling valve 25, a master cylinder hydraulic pressure sensor 30 for detecting the hydraulic pressure of the brake fluid in the master cylinder 21 is provided. Further, in the region on the wheel cylinder 24 side of the main flow path 41 with respect to the filling valve 25, a wheel cylinder hydraulic pressure sensor 31 for detecting the hydraulic pressure of the brake fluid in the wheel cylinder 24 is provided.

[0045]

[0024] That is, the main flow path 41 connects the master cylinder port MP and the wheel cylinder port WP via the filling valve 25. Also, the sub-flow path 42 is defined as a part or all of the flow path that allows the brake fluid in the wheel cylinder 24 to escape to the master cylinder 21 via the releasing valve 26. That is, the sub-flow path 42 also connects the master cylinder port MP and the wheel cylinder port WP.

[0046] [0 0 2 5] The valve 2 5 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 2 6 is, for example, when the system is energized Figure 3 shows the view in observation direction Z. Figure 5 shows the motor unit of the hydraulic control unit according to an embodiment of the present invention. Specifically, Figure 5 shows the motor unit 70 viewed in observation direction Y shown in Figure 3. Observation directions Z and Y are the observation directions in which the output shaft 3 of the motor unit 70, which will be described later, extends.

[0047] [0 0 3 3] The base body 1 1 ○ is made of a metal such as an aluminum alloy, and is shaped like a roughly rectangular parallelepiped. Each side surface of the base body 1 1 ○ may be flat, include curved sections, or include steps. A motor unit 7 0 is provided on one side surface 1 1 0 a of the base body 1 1 ○. In this embodiment, a suction valve 2 5 and a release valve 2 6 are also provided on surface 1 1 0 a of the base body 1 1 ○. The motor unit 7 ○, the suction valve 2 5, and the release valve 2 6 are covered by a housing 1 2 0 that houses a control board 6 1. The motor unit 70, the suction valve 25, and the release valve 26 are electrically connected to the control board 61 by terminals or the like. That is, in the hydraulic control unit 1〇〇 according to this embodiment, the motor unit 70 is located in the space enclosed by the base 110 and the housing 120. The hydraulic control unit 1〇〇 configured in this way can be made smaller compared to the case where the motor unit 70 is located outside the housing 12〇. The motor unit 7〇 may also be located outside the housing 12〇.

[0048]

[0034] The motor unit 70 includes a stator 71, a rotor 72, an output shaft 73, and a cover 80. The output shaft 73 is fixed to the rotor 72 and is rotatably supported by a bearing (not shown). As a result, the rotor 72 disposed on the inner peripheral side of the stator 71 can rotate on the inner peripheral side of the stator 71 without interfering with the stator 71. The cover 80 is provided on the outer peripheral side of the stator 71. The bearing (not shown) that rotatably supports the output shaft 73 is fixed to the cover 80, for example.

[0049]

[0035] Here, the motor unit 70 is fixed to the base body 110 by so-called caulking. As a result, the arrangement space for fixtures such as bolts for fixing the motor unit 70 to the base body 110 can be reduced, and the hydraulic control unit 100 can be miniaturized.

[0050] [0 0 3 6] Specifically, the cover 8 of the motor unit 7 includes a cylindrical section S 8 1 that covers the outer circumference of the stator 7 1, and a flange 8 2 that protrudes from the outer surface of the cylindrical section 8 1 to the outside of the cylindrical section 8 1. The flange 8 2 may be integrally formed with the cylindrical section 8 1, or it may be formed separately from the cylindrical section 8 1 and joined to the cylindrical section 8 1 by welding or the like. On the other hand, the base body 11 0 has a first recess 11 1 into which the flange 8 2 of the cover 8 0 is inserted, and a plastically deformed section 11 3 that protrudes to the inner circumference of the first recess 11 1. More specifically, stepped portions 111b are formed at multiple locations on the edge of the first recess 111. By pressing a jig (not shown) against the stepped portion 1lib and plastically deforming the edge of the first recess 11!, a plastically deformed portion 113 is formed. The motor unit 70 is then fixed to the base body 11〇 by the flange 82 of the cover 80 being sandwiched between the bottom Illa of the first recess 111 and the plastically deformed portion 113. Note that Figures 3 and 4 show the base body 11〇 before the plastically deformed portion 113 is formed. For this reason, the plastically deformed portion 113 is shown with dashed lines in Figures 3 and 4.

[0051] [0 0 3 7] In this embodiment, the motor unit 70 is configured to drive the pump device 50 without a reduction mechanism. Specifically, the pump device 50 according to this embodiment is a reciprocating pump. In this case, an eccentric part 74 that rotates eccentrically with respect to the rotation axis of the output shaft 73 of the motor unit 70 is attached to the output shaft 73 of the motor unit 70. Then, one end of the plunger 51 of the pump device 50 is pressed against the eccentric part 74 by the eccentric rotation of the eccentric part 74, and the pump device 50 is driven by the reciprocating motion of the plunger 51.

[0052] [0 0 3 8] In this configuration, when the pump device 50 is driven by the output shaft 73 of the motor unit 70 without a reduction gear mechanism, the radial load acting on the output shaft 3 when the pump device 50 is driven will be supported as shown in Figure 3. Specifically, the base body 110 is provided with a bearing 101. This bearing 101 is provided, for example, in a bearing recess 114 formed at the bottom of the second recess 112, which will be described later. The output shaft 73 of the motor unit 70 is inserted into the bearing 101 and is rotatably supported by the bearing 101. Note: Hydraulic control unit [0 0 4 5] In this embodiment, as shown in Figure 3, in the observation direction perpendicular to the direction in which the output shaft 73 of the motor unit 70 extends, the projection 93 is located at the end 81a of the cylindrical portion 81 on the side of the second recess 112. However, the projection 93 may be located at a location other than the end 81a. Also, in this embodiment, as shown in Figure 5, in the observation direction in which the output shaft 73 of the motor unit 70 extends, the projection 93 is formed in an annular shape. However, this shape of the projection 93 is merely an example. Furthermore, in this embodiment, as shown in Figure 3, in the observation direction perpendicular to the direction in which the output shaft 73 of the motor unit 7〇 extends, the cross-sectional shape of at least the portion of the projection 93 that contacts the second location 92 is an arc shape. That is, in the observation direction perpendicular to the direction in which the output shaft 73 of the motor unit 7〇 extends, the projection 93 makes point contact with the second location 92. However, the cross-sectional shape of the portion of the projection 93 that contacts the second location 92 in the observation direction perpendicular to the direction in which the output shaft 73 of the motor unit 7〇 extends may be a shape other than an arc shape. In other words, in the observation direction perpendicular to the direction in which the output shaft 73 of the motor unit 70 extends, the projection 93 may be in line contact with the second location 92.

[0053] [0 0 4 6] Manufacturing Method of Hydraulic Control Unit > Figure 6 is a flowchart illustrating a manufacturing method of a hydraulic control unit according to an embodiment of the present invention. Specifically, Figure 6 shows the process of fixing the motor unit 7 to the base 11 in the manufacturing process of the hydraulic control unit 1. The motor unit 7 is fixed to the base 11 in steps S1 and S2.

[0054] [0 0 4 7] Specifically, step S1 is a press-fitting process. The press-fitting process involves inserting the flange 82 of cover 8 into the first recess 111 and press-fitting the cylindrical portion 81 of cover 80 into the inner circumferential wall 112a of the second recess 112. More specifically, the flange 82 of the motor unit 7 before it is attached to the base 11 is pressed toward the bottom Illa of the first recess 111 using a tool not shown. As a result, when the projection 93 of the cylindrical portion 81 reaches a position facing the inner circumferential wall 112a of the second recess 112, the projection 93 of the cylindrical portion 81 is pressed into the inner circumferential wall 112a of the second recess 112. Also, the flange 82 is inserted into the first recess 111. The flange 82 is pressed by a tool (not shown) until it reaches the bottom Illa of the first recess 111.

[0055] [0 0 4 8] Step S2 following step S1 is a fixing step. In the fixing step, the edge of the first recess 111 is plastically deformed toward the inner circumference of the first recess 111 to form a plastically deformed portion 113, and the flange 82 is sandwiched between the bottom Illa of the first recess 111 and the plastically deformed portion 113 to fix the motor unit ?〇 to the base 11〇.

[0056] [ 0 0 4 9 ]

[0057] <Modified Example> Figure 7 is a diagram illustrating a modified example of a hydraulic control unit according to an embodiment of the present invention, and is a partial cross-sectional view of the hydraulic control unit as seen from the side. In the hydraulic control unit 100 described above, the location of the cylindrical portion 81 facing the inner circumferential wall 112a is the first location 91, and the location of the inner circumferential wall 112a facing the cylindrical portion 81 is the second location 92. However, the hydraulic control unit 100 may also have a configuration as shown in Figure 7, where the location of the inner circumferential wall 112a facing the cylindrical portion 81 is the first location 91, and the location of the cylindrical portion 81 facing the inner circumferential wall 112a is the second location 92. In other words, the portion of the inner circumferential wall 112a facing the cylindrical portion 81 may be provided with a protrusion 93.

[0058] [0 0 5 0] Figure 8 is a diagram illustrating a modified example of a hydraulic control unit according to an embodiment of the present invention, and shows the motor unit of the hydraulic control unit. Figure 8 is a view of the motor unit 7〇 of a modified example of the hydraulic control unit 100 in the observation direction Y shown in Figure 3. The hydraulic control unit 100 described in Figure 8 is provided with a plurality of protrusions 93. In the observation direction in the direction in which the output shaft 73 of the motor unit 70 extends, the plurality of protrusions 93 are arranged at intervals. For example, the plurality of protrusions 93 are arranged at equal angular intervals with respect to the output shaft 73 of the motor unit 70. The first location 91 may, for example, be provided with protrusions 93 arranged in this manner.

[0059] [0 0 5 1] <Effects of the hydraulic control unit> The hydraulic control unit 100 according to this embodiment is a hydraulic control unit mounted on a saddle-type vehicle 200. The hydraulic control unit 100 comprises a base body 110 in which an internal passage 40 through which brake fluid flows is formed, and a motor unit 70 which is the drive source for a pump device 5〇 provided in the internal passage 40. The motor unit 70 has a stator 71, a rotor 72, an output shaft 73 fixed to the rotor 72, and a cover 80 provided on the outer circumference of the stator 71. The cover 80 has a cylindrical portion 81 that covers the outer circumference of the stator 71, and the cylindrical portion 81 Cut.

[0060] [0 0 5 3] Preferably, the first location 91 of the hydraulic control unit 100 is provided with a projection 93 that protrudes toward the second location 92. The press-fit portion 90 is configured such that the projection 93 is in contact with the second location 92. For example, the press-fit portion 90 is configured such that the entire portion of the cylindrical portion 81 facing the inner circumferential wall 112a is press-fitted into the portion of the inner circumferential wall 112a facing the cylindrical portion 81. A press-fit portion 90 with such a configuration will be referred to below as a comparative press-fit portion. In the case of the comparative press-fit section, when press-fitting the cylindrical portion 81 into the inner circumferential wall 112a of the second recess 112, the load required to press-fit the cylindrical portion 81 into the inner circumferential wall 112a of the second recess 112 increases as the press-fit length increases. This is because the area in contact between the cylindrical portion 81 and the inner circumferential wall 112a of the second recess 112 increases as the press-fit length increases. The press-fit length is the length at which the cylindrical portion 81 and the inner circumferential wall 112a of the second recess 112 face each other, and is the length in the direction of press-fitting the cylindrical portion 81 into the inner circumferential wall 112a. On the other hand, in the case of a press-fit section 90 configured with a projection 93 that contacts the second location 92 at the first location 91, even if the press-fit length increases, the area in contact between the cylindrical section 81 and the inner circumferential wall 112a of the second recess 112 becomes the area in contact between the projection 93 and the second location 92, and remains approximately constant. Therefore, in the case of a press-fit section 90 configured with a projection 93 that contacts the second location 92 at the first location 91, even if the press-fit length increases, the load required to press-fit the cylindrical section 81 into the inner circumferential wall 112a of the second recess 112 does not increase and remains approximately constant. Therefore, compared to a hydraulic control unit 100 having a press-fit section 9〇 configured with a protrusion 93 at a first location 91 that contacts a second location 92, the equipment for press-fitting the cylindrical section 81 into the inner circumferential wall 112a of the second recess 112 can be miniaturized.Furthermore, a hydraulic control unit 100 having a press-fit portion 9〇 configured with a protrusion 93 where the first location 91 contacts the second location 92 allows for a thinner plate thickness of the flange 82 of the cover 80 compared to a hydraulic control unit 100 having a press-fit portion. The motor unit 70 has a bearing 101 into which the output shaft 73 is inserted. That is, preferably, the hydraulic control unit 100 is configured to drive the pump device 50 with the output shaft 73 of the motor unit 70 without a reduction mechanism. In the case where a reduction mechanism is connected to the output shaft 73 of the motor unit 70 and the pump device 50 is driven by the output shaft of the reduction mechanism, at least a portion of the deviation of the motor unit 70 from its specified position is absorbed by the play between the gears in the reduction mechanism. On the other hand, the configuration in which the pump device 50 is driven by the output shaft 73 of the motor unit 70 without a reduction mechanism does not have a mechanism to absorb the deviation of the motor unit 70 from its specified position. Therefore, a hydraulic control unit 100 that drives the pump device 50 with the output shaft 73 of the motor unit 70 without a reduction mechanism requires greater suppression of the motor unit 70 shifting from its designated position. For this reason, it is very useful to have a hydraulic control unit 100 that can suppress the motor unit 70 shifting from its designated position more effectively than conventional designs, by having the pump device 50 driven with the output shaft 73 of the motor unit 70 without a reduction mechanism.

[0061] [0 0 5 9] Although the hydraulic control unit 1〇〇 has been described above in the embodiments, the hydraulic control unit according to the present invention is not limited to the embodiments described. The hydraulic control unit according to the present invention may implement only a part of the configuration described in the embodiments.

[0062] [Explanation of symbols]

[0063] [ 0 0 6 0 ]

[0064] ! Body, 2 Handle, 3 Front wheel, 3a Rotor, 4 Rear wheel, 4a Rotor, 1 0 Brake system, ! 1 Brake lever, 1 2 Hydraulic circuit, 1 3 Brake pedal, 1 5 Fluid pipe, 1 6 Fluid pipe, 2 1 Master cylinder, 2 2 Reservoir, 2 3 Brake caliper, 2 4 Wheel cylinder, 2 5 Fill valve, 2 6 Release valve, 2 7 Accumulator, 3 ○ Master cylinder hydraulic sensor, 3 1 Wheel cylinder hydraulic sensor, 4 ○ Internal flow path, 4 1 Main flow path, 4 1a Main flow path section, 4 2 Sub-flow path, 5 ○ Pump device, 5 1 Plunger, 6 ○ Control device, 6 1 Control board, 7 ○ Motor unit, 7 1 Stator, 7 2 Rotor, 7 3 Output shaft, 7 4 Eccentric part, 8 ○ Cover, 8 1 Cylinder part, 8 1a End part, 8 2 Flange, 9 ○ Press-fit part, 9 1 First location, 9 2 Second location, 9 3 Protrusion, 1 0 0 Hydraulic control unit, 1 0 1 Bearing, 1 1 0 Base body, 1 1 0a Surface, 1 1 1 First recess, 1 1 1a Bottom, 1 1 1b Stepped part, 1 1 2 Second recess, 1 1 2a Inner circumferential wall, 1 1 3 Plastically deformed part, 1 1 4 Bearing recess, 1 2 0 Housing, 200 Saddle-type vehicle, MP Master cylinder port, w P Wheel cylinder port.

Claims

[Document Name] Scope of Claim

1. A hydraulic control unit (100) mounted on a saddle-type vehicle (200), comprising: a base (110) having an internal passage (40) through which brake fluid flows; a motor unit (70) which is a drive source for a pump device (50) provided in the internal passage (40), and having a stator (71), a rotor (72), an output shaft (73) fixed to the rotor (72), and a cover (80) provided on the outer circumference of the stator (71), wherein the cover (80) comprises: a cylindrical portion (81) covering the outer circumference of the stator (71); and the cylindrical portion (81) The base (110) comprises a flange (82) that protrudes outward from the outer circumferential surface of the cylindrical portion (81), and the base (110) has a first recess (111) into which the flange (82) is inserted, and a plastically deformed portion (113) that protrudes inward from the first recess (111). [Claim ?] In an observation direction perpendicular to the direction in which the output shaft (73) extends, the cross-sectional shape of the portion of the projection (93) that contacts at least the two locations (92) is arc-shaped, as described in any one of Claims 2 to 4 (100).

8. A hydraulic control unit (100) according to any one of claims 1 to 4, comprising a bearing (101) provided on the base (110) into which the output shaft (73) is inserted.

9. A hydraulic control unit (100) according to any one of Claims 1 to 4 is provided

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