Hydraulic pressure control unit and saddle-riding type vehicle

Abstract

Provided are: a hydraulic pressure control unit comprising a motor unit and a cover having a flange part and covering at least a part of the outer peripheral surface of a housing of the motor unit, the hydraulic pressure control unit being capable of reducing a load from the cover to the housing; and a saddle-riding type vehicle comprising the hydraulic pressure control unit. The hydraulic pressure control unit is provided with a buffer part for suppressing contact between the cover and the housing in at least a part of the motor unit between the cover and the housing.

Description

[0001]

Document Name

[0002]

Title of the Invention

[0003]

Technical Field

[0004]

.001

[0005] The present invention relates to a hydraulic control unit for a straddle-type vehicle and a straddle-type vehicle equipped with the hydraulic control unit.

[0006]

Background Art

[0007]

.002

[0008] Some conventional vehicles include a hydraulic control unit that controls the hydraulic pressure of the brake fluid in a hydraulic circuit filled with 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 antilock 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. And the said motor unit may be fixed to the base body.

[0009]

〇003

[0010] Such a hydraulic control unit is known to be applied to straddle-type vehicles. For the hydraulic control unit for a straddle-type vehicle, miniaturization is desired from the viewpoint of increasing the degree of freedom in component layout. The hydraulic control unit for a straddle-type vehicle is disclosed, for example, in Patent Document 1. In Patent Document 1, it is described that, for example, in the hydraulic control unit, a structure in which the motor unit includes a flange and the flange is sandwiched between the bottom of a recess formed in the base body and a plastic deformation part formed on the inner peripheral surface of the recess can be adopted. According to Patent Document 1, it is said that by adopting such a structure, the hydraulic control unit can be made smaller.

[0011] [Prior art documents]

[0012] [Patent Documents]

[0013]

〇 0 0 4

[0014] [Patent Document 1] Japanese Unexamined Patent Publication No. 2023-156949

[0015] [Overview of the project]

[0016] [Problems that the invention aims to solve]

[0017]

〇 0 0 5

[0018] As described in Patent Document 1, in a hydraulic control unit in which the motor unit has a flange portion, the flange portion may be provided on a cover that covers at least a portion of the outer circumferential surface of the housing of the motor unit. In such a case, in a hydraulic control unit in which the flange portion is sandwiched between the bottom of a recess formed in the base body and a plastically deformed portion, it is necessary to consider the possibility that a load will be generated on the flange portion due to the sandwiching between the bottom and the plastically deformed portion. Furthermore, it is necessary to consider the possibility that the load on the flange portion may cause a load on the housing of the motor unit via the cover on which the flange is provided, and consequently, the possibility of damage to the housing and the inside of the motor (stator and rotor, etc.). For these reasons, there is a demand for a hydraulic control unit for saddle-type vehicles that can reduce the load on the housing, in which the hydraulic control unit comprises a motor unit and a cover that has a flange portion and covers at least a portion of the outer circumferential surface of the housing of the motor unit.

[0019]

〇 0 0 6

[0020] The object of the present invention is to provide a hydraulic control unit for a saddle-type vehicle, comprising a motor unit and a cover having a flange portion and covering at least a portion of the outer circumferential surface of the housing of the motor unit, which can reduce the load on the housing, and a saddle-type vehicle equipped with the hydraulic control unit.

[0021] [Means for solving the problem]

[0022] [〇 0 0 7] 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; a motor unit which is a drive source for the pump device and houses a stator and a rotor; and a cover that covers at least a part of the outer circumferential surface of the housing, wherein the cover has a flange portion, the base body has a recess into which the flange portion is inserted and a plastically deformable portion protruding inward from the recess, the motor unit is fixed to the base body by the flange portion being sandwiched between the bottom of the recess and the plastically deformable portion, and further, in the motor unit, a buffer portion is provided in at least a part between the cover and the housing to suppress contact between the cover and the housing.

[0023] [0 0 0 8]

[0024] 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.

[0025] [Effects of the Invention]

[0026] [0 0 0 9]

[0027] According to the present invention, a hydraulic control unit for a saddle-type vehicle is provided, comprising a motor unit and a cover having a flange portion and covering at least a part of the outer circumferential surface of the housing of the motor unit, wherein the hydraulic control unit can reduce the load on the housing, and a saddle-type vehicle equipped with the hydraulic control unit is provided.

[0028] [Brief explanation of the drawing]

[0029] [0 0 1 0]

[0030] [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.

[0031] [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.

[0032] [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.

[0033] [Figure 4] This is an enlarged view of part a in Figure 3.

[0034] [Figure 5] This figure shows the inside of the hydraulic control unit according to this embodiment.

[0035] [Figure 6] This is a partially enlarged cross-sectional view of a hydraulic control unit without a buffer section, showing how the flange section is fixed.

[0036] [Modes for carrying out the invention]

[0037] [0 0 1 1]

[0038] The hydraulic control unit and saddle-type vehicle according to the present invention will be described below with reference to the drawings.

[0039] [0 0 1 2]

[0040] 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. [0 0 1 3]

[0041] 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 reference numerals may be used for identical or similar members or parts, or the reference numerals may be omitted. Furthermore, detailed structures may be simplified or omitted as appropriate in the illustrations.

[0042] [0 0 1 4]

[0043] <Configuration and Operation of Brake System for Saddle-Type Vehicles>

[0044] A saddle-riding type vehicle 200 equipped with a hydraulic control unit 100 according to this embodiment, and the configuration and operation of a brake system 10 equipped with the hydraulic control unit 100 will be described. FIG. 1 is a schematic diagram showing the configuration of a saddle-riding type vehicle 200 on which a brake system 10 equipped with a hydraulic control unit 100 according to this embodiment is mounted. FIG. 2 is a schematic diagram showing the configuration of a brake system 10 equipped with a hydraulic control unit 100 according to this embodiment. [[ID=~]] [[ID=~]]

[0045] [[ID=~]]

[0015] [[ID=~]] [[ID=~]]

[0046] As shown in FIGS. 1 and 2, the brake system 10 is mounted on a saddle-riding type vehicle 200. In FIG. 1, the saddle-riding type vehicle 200 is a motorcycle having an engine or a motor as a drive source. The saddle-riding type vehicle 200 may be other saddle-riding type vehicles other than motorcycles. Other saddle-riding type vehicles other than motorcycles are, for example, bicycles (e.g., two-wheeled bicycles, three-wheeled bicycles, etc.), three-wheeled motorcycles having at least one of an engine and an electric motor as a drive source, and buggies. Here, 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. Also, a motorcycle or a three-wheeled motorcycle means a so-called motorbike, and examples of motorbikes include motorcycles, scooters, electric scooters, etc. [[ID=~]] [[ID=~]]

[0047] [[ID=~]]

[0016] [[ID=~]] [[ID=~]]

[0048] The saddle-riding 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. [[ID=~]] [[ID=~]]

[0049] [[ID=~]]

[0017] [[ID=~]] [[ID=~]]

[0050] Brake system 1 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 handle 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 1〇〇 and the brake system 1〇 may adjust the braking force by adjusting the pressure of the brake fluid according to the amount of operation of the brake lever 11 and the brake pedal 13, or by controlling the position of the braking part of the wheel (e.g., brake pads) itself by an electrical signal.

[0051] [ 0 0 1 8 ]

[0052] The brake lever 11 and brake pedal 13 are examples of brake input points in the brake system 10. For example, a brake pedal other than the brake pedal 13 provided on the body 1 may be used as a brake input point instead of 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 point instead of the brake pedal 13.

[0053] [ 0 0 1 9 ]

[0054] The hydraulic circuit 1 2 includes, for example, 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 of the brake caliper 2 3.

[0055] [ 0 0 2 0 ]

[0056] The base 1 1 0 of the hydraulic control unit 1 00 has an internal passage 4 0 that connects, for example, 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 communicates with the master cylinder 2 1 via a fluid pipe 1 5 described later, and with the wheel cylinder 2 4 via a fluid 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 in communication via a fluid pipe 15 connected 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 connected between the wheel cylinder 24 and the wheel cylinder port WP formed in the base 110. 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.

[0057] [ 0 0 2 1 ]

[0058] In the main flow path 41, in the region closer to the wheel cylinder 24 than the intermediate section 41a of the main flow path, for example, a stop valve 25 is provided. The opening and closing operation of the stop valve 25 opens and closes the flow path portion of the main flow path 41 where the stop valve 25 is installed, thereby controlling the flow rate of brake fluid flowing through this region. In the secondary flow path 42, for example, from the upstream side, a release valve 26, an accumulator 27 for storing brake fluid, and a pump device 50 are provided in that order. That is, the pump device 50 is installed in the internal flow path 40. The opening and closing operation of the release valve 26 opens and closes the flow path portion of the secondary flow path 42 where the release valve 26 is installed, thereby controlling the flow rate of brake fluid flowing through this region. The pump device 50 applies pressure to the brake fluid in the sub-flow channel 42 and moves the brake fluid. The type of pump device 50 is not particularly limited, but as shown in the example in Figure 3, the pump device 50 is, for example, a reciprocating pump.

[0059] [ 0 0 2 2 ]

[0060] Furthermore, in the region of the main flow path 41 closer to the master cylinder 21 than the suction valve 25, a master cylinder hydraulic pressure sensor 3〇 is provided for detecting the hydraulic pressure of the brake fluid in the master cylinder 21. Also, in the region of the main flow path 41 closer to the wheel cylinder 24 than the suction valve 25, a wheel cylinder hydraulic pressure sensor 31 is provided for detecting the hydraulic pressure of the brake fluid in the wheel cylinder 24.

[0061] [ 0 0 2 3 ]

[0062] In other words, the main passage 41 connects the master cylinder port MP and the wheel cylinder port WP via the filling valve 25. The secondary passage 42 is part or all of the passage that releases the brake fluid from the wheel cylinder 24 to the master cylinder 21 via the release valve 26. That is, the secondary passage 42 also connects the master cylinder port MP and the wheel cylinder port WP.

[0063] [ 0 0 2 4 ]

[0064] The suction 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 a solenoid valve that, for example, switches the flow of brake fluid toward the accumulator 2 7 via its installation location from closed to open when the system is energized from a non-energized state.

[0065] [ 0 0 2 5 ]

[0066] The pump device 50 of the hydraulic circuit 12 can be driven by the motor unit 70. That is, the motor unit 70 can be the power source for the pump device 50.

[0067] [ 0 0 2 6 ]

[0068] As shown in Figure 2, the hydraulic control unit 100 comprises a base 110, various components provided on the base 110 (such as a suction valve 25, a release valve 26, an accumulator 27, a master cylinder hydraulic sensor 30, a wheel cylinder hydraulic 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.

[0069] [ 0 0 2 7 ]

[0070] The control device 60 controls the inlet 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 110, or to other components other than the base 110. Furthermore, part or all of the control device 60 may consist 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.

[0071] [ 0 0 2 8 ]

[0072] 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 wheel rotor 3a of the front wheel 3, thereby braking the front wheel 3.

[0073] [ 0 0 2 9 ]

[0074] The control unit 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 unit 60 outputs commands that control the operation of the fill valve 25, release valve 26, and motor unit 70, thereby performing pressure reduction control operations, etc.

[0075] [ 0 0 3 0 ]

[0076] 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 to reduce the brake fluid pressure in the wheel cylinder 24 in the hydraulic circuit 12. 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 brake 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, where it is stored. Furthermore, the brake fluid stored in the accumulator 27 is returned to the master cylinder 21 by a pump device 5〇 driven by the motor unit 7〇. In other words, the hydraulic control unit 10〇 can control the hydraulic pressure of the brake fluid in the wheel cylinder 24 to perform a pressure reduction control operation (in other words, anti-lock braking operation) of the hydraulic circuit 12.

[0077] [ 0 0 3 1 ]

[0078] Configuration of the hydraulic control unit >

[0079] 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 a in Figure 3. Note that the base body 11〇 in Figures 3 and 4 shows the state before the plastic deformation portion 112 is formed. However, for explanatory purposes, the plastic deformation portion 112 is shown with dashed lines in Figures 3 and 4. 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 74a of the output shaft 74 (described later) of the motor unit 70.

[0080] [ 0 0 3 2 ]

[0081] The base body 11〇 is made of a metal, such as an aluminum alloy. The shape of the base body 11〇 is not particularly limited, but for example, it is approximately a rectangular parallelepiped. Each side surface of the base body 11〇 may be flat, include curved sections, or include steps. A motor unit 7〇 is provided on one side surface 11〇a of the base body 11〇. A suction valve 25 and a release valve 26 may also be provided on surface 11〇a of the base body 11〇. The motor unit 7〇, suction valve 25, and release valve 26 may be covered by a control board housing 12〇, which houses a control board 61, for example. In this configuration, the motor unit 7〇, the suction valve 25, and the release valve 26 are electrically connected to the control board 61, for example, by terminals. That is, in the hydraulic control unit 100 according to this embodiment, the motor unit 70 is located in a space enclosed by the base 11〇 and the control board housing 12〇. 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. Note that the motor unit 7〇 may also be located outside the control board housing 120.

[0082] [ 0 0 3 3 ]

[0083] The motor unit 70 comprises a stator 71, a rotor 72, a housing 73 that accommodates the stator 71 and rotor 72, an output shaft 74, and a cover 8〇 that covers at least a portion of the outer surface of the housing 73.

[0084]

[0085] In a hydraulic control unit sandwiched between part 111a and plastic deformation part 112, it is necessary to consider the possibility of a load being placed on the flange part 82 due to the flange part 82 being sandwiched between the bottom part Illa and the plastic deformation part 112. Figure 6 is a partially enlarged cross-sectional view of a hydraulic control unit in which the flange part 82 is fixed in a hydraulic control unit without a buffer part 90 (described later). As shown in Figure 6, when a load is applied to the flange portion 82 (direction A in Figure 6), it is possible that a load (direction B in Figure 6) will be applied to the housing 73 of the motor unit 70 via the cover 80 on which the flange portion 82 is provided, and consequently, the possibility of damage to the housing 73 and the inside of the motor (stator 71 and rotor 72, etc.) must be considered. For these reasons, in a hydraulic control unit for a saddle-type vehicle, which comprises a motor unit 70 and a cover 8〇 that has a flange portion 82 and covers at least a part of the outer circumferential surface of the housing 73 of the motor unit 70, there is a need for a hydraulic control unit that can reduce the load on the housing 73.

[0086] [ 0 0 4 0 ]

[0087] In contrast, in the hydraulic control unit 100 according to this embodiment, the motor unit 70 is provided with a buffer portion 9〇 in at least a portion between the cover 80 and the housing 73 to suppress contact between the cover 80 and the housing 73. By providing the buffer portion 90 in at least a portion between the cover 8〇 and the housing 73, contact between the cover 80 and the housing 73 can be suppressed, and when a load is applied to the flange portion 82, it is possible to suppress the load being applied to the housing 73 via the cover 80. This can reduce the load on the housing 73. Furthermore, damage to the housing 73 and the inside of the motor (such as the stator 71 and rotor 72) can be suppressed.

[0088] [ 0 0 4 1 ]

[0089] The type of buffer portion 90 is not particularly limited. The buffer portion 90 may be, for example, a gap provided between the cover 80 and the housing 73, or a known buffer material (for example, a buffer material made of polyethylene, foamed polyethylene, etc.). From the viewpoint of reducing the number of parts in the hydraulic control unit 100, it is preferable that the buffer portion 90 is a gap 91 provided between the cover 80 and the housing 73. Figures 3 and 4 show an example in which the buffer portion 90 is the above gap 91.

[0090] [ 0 0 4 2 ]

[0091] If the buffer portion 90 is the above-mentioned gap 91, the method of forming the above-mentioned gap 91 is not particularly limited. For example, as in the examples in Figures 3 and 4, if a connection portion 83 (details will be described later) for the housing 73 is provided at the end 8〇b of the cover 80 opposite to the end 80a on the bottom Illa side of the recess 111 in the axial direction of the output shaft 74 of the motor unit 70, the gap 91 is formed by connecting the cover 8〇 and the housing 73 at the connection portion 83 such that a gap 91 is formed between the cover 8〇 and the housing 73. The method for forming the above-mentioned gap 91 is not limited thereto. For example, when a notch is formed in the cover 80 (specifically the cylindrical portion 81) and the cover 80 is attached to the outer surface of the housing 73, the notched portion may be used as the gap 91.

[0092] [ 0 0 4 3 ]

[0093] The position in which the buffer portion 90 is provided between the cover 8 and the housing 73 is not particularly limited. The buffer portion 90 may be provided, for example, in a position opposite to the plastic deformation portion 112. Also, if the cover 80 is equipped with a connecting portion 83 (details described later), the buffer portion 90 may be provided, for example, in a position opposite to the plastic deformation portion 112, and in a region closer to the connecting portion 83 than the opposing position.

[0094] [ 0 0 4 4 ]

[0095] The width W of the buffer portion 90 in the direction perpendicular to the axial direction of the output shaft 74 of the motor unit 70 is not particularly limited. In the example shown in Figures 3 and 4, the width W of the buffer portion 90 in the direction perpendicular to the axial direction of the output shaft 74 of the motor unit 70 increases as it approaches the position facing the plastic deformation portion 112. In this case, the width W may increase in a stepwise manner as it approaches the position facing the plastic deformation portion 112, or it may increase continuously as it approaches the position facing the plastic deformation portion 112.

[0096] [ 0 0 4 5 ]

[0097] Examples of methods for providing a buffer portion 90 whose width W increases as it approaches the position facing the plastically deformed portion 1 1 2 include, for example, using a buffer material whose width W increases as it approaches the position facing the plastically deformed portion 1 1 2, or making a notch in the cover 80 (specifically the cylindrical portion 8 1) such that the width W increases as it approaches the position facing the plastically deformed portion 1 1 2.

[0098] [ 0 0 4 6 ]

[0099] The cover 80 may have a connection portion 83 for the housing 73 at the end 80b opposite to the end 80a on the bottom 111a side of the recess 111 in the axial direction of the output shaft 74 of the motor unit 70. This allows the cover 80 and the housing 73 to be connected. The type of connection portion 83 is not particularly limited. The connection portion 83 may be, for example, a welded portion 84 where the cover 80 and the housing 73 are welded together, or an adhesive bonded portion. The position of the connection portion 83 does not have to be at the end 80b.

[0100] [ 0 0 4 7 ]

[0101] Assembly of the hydraulic control unit >

[0102] The assembly of the hydraulic control unit 100 according to the present invention will be described below.

[0103] [ 0 0 4 8 ]

[0104] (Attaching the cover to the housing, and forming the cushioning section)

[0105] In this process, a cover 8〇 is attached to the housing 73 that houses the stator 71 and rotor 72 to form a buffer section 9〇.

[0106] [ 0 0 4 9 ]

[0107] The method of attaching the cover 8 0 is not particularly limited; it may be attached to the housing 7 3 using adhesive, or the cover 8 0 and the housing 7 3 may be welded together.

[0108] [ 0 0 5 0 ]

[0109] The method for forming the buffer portion 90 is not particularly limited. For example, the buffer portion 90 may be formed by attaching the cover 80 to the housing 73 with a buffer material sandwiched between the cover 80 (specifically the cylindrical portion 81) and the housing 73. In this case, the sandwiched buffer material becomes the buffer portion 90. Alternatively, the buffer portion 90 may be formed by connecting the cover 80 (specifically the cylindrical portion 81) and the housing 73 while they are separated so that there is a gap between them (for example, by welding the cover 80 and the housing 73, or by placing adhesive in a part of the space between the cover 80 and the housing 73 to connect them). In this case, the gap (gap 91 in Figure 4) becomes the buffer portion 90. Alternatively, a cover 80, which has a notch formed in the cylindrical portion 81 in the same direction as the flange portion 82 protruding, may be connected to the housing 73, and the notched portion may be used as a buffer portion 90 (specifically, a gap 91).

[0110] [ 0 0 5 1 ]

[0111] (Motor unit assembly onto the base)

[0112] In this step, the motor unit 7〇, with the cover 8 0 attached to the housing 7 3 and the buffer portion 9 0 formed thereon, is assembled to the base 11〇.

[0113] [ 0 0 5 2 ]

[0114] If the hydraulic control unit 100 is configured without a reduction mechanism, first, the eccentric part 75 is attached to the output shaft 74, and then the tip of the output shaft 74 is inserted into the bearing 1〇 provided on the base 11〇. If the hydraulic control unit 100 is configured with a reduction mechanism, for example, first, the output shaft 74 is inserted into the reduction mechanism.

[0115] [ 0 0 5 3 ]

[0116] Subsequently, multiple points on the flange portion 82 of the motor unit 70 are pressed with a jig toward the bottom portion 111a of the recess 111, bringing the flange portion 82 into contact with the bottom portion 111a. Then, a jig (not shown) is pressed against the stepped portion 111b to form a plastically deformed portion 112, and the bottom portion of the recess 111

[0117]

[0118]

[0119] This is achieved. On the other hand, it is assumed that a load will be applied to the part of the housing 7 3 on the connection part 8 3 side, rather than to the part of the housing 7 3 facing the plastically deformed part 1 1 2. Therefore, by providing a buffer part 9 0 in the area on the connection part 8 3 side of the aforementioned opposing position, the load on more parts of the housing 7 3 can be reduced. From these considerations, by providing the buffer part 9 0 in the position facing the plastically deformed part 1 1 2, and in the area on the connection part 8 3 side of the aforementioned opposing position, the load on the housing 7 3 can be further reduced.

[0120] [ 0 0 6 1 ]

[0121] Furthermore, it is preferable that the width W of the buffer portion 90 in the direction perpendicular to the axial direction of the output shaft 4 of the motor unit 70 increases as it approaches the position facing the plastic deformation portion 112. As described above, the position of the housing 73 facing the plastic deformation portion 112 is particularly susceptible to load. In contrast, the width W of the buffer portion 90 is preferably such that it approaches the position facing the plastic deformation portion 112.

[0122]

[0123] The recess (111) has a connection portion (83) with the housing (73), provided at the end (80b) opposite to the end (80a) on the bottom (111a) side of the recess (111) in the axial direction.

[0124] : 1 I or [2 l] Hydraulic control unit (100).

[0125]

[0004] The connecting portion (83) is a welded portion (84) where the cover (80) and the housing (73) are welded together.

[0126] : Hydraulic control unit (100) as described in 3 l.

[0127]

[0005] The buffer portion (90) is provided at a position opposite to the plastic deformation portion (112), and in a region closer to the connection portion (83) than the opposing position, as described in 3l or

[0004] , the hydraulic control unit (100).

[0128]

[0006] The width of the buffer portion (90) in the direction perpendicular to the axial direction of the output shaft (74) of the motor unit (70) increases as it approaches the position facing the plastic deformation portion (112).

[0129] : A hydraulic control unit (100) as described in any of 1I to 5I.

[0130]

[0007] The buffer portion (90) is a gap (91) provided between the cover (80) and the housing (73).

[0131] : A hydraulic control unit (100) as described in any of 1 I to

[0006] .

[0132] : 8] The output shaft (74) of the motor unit (70) is connected to the rotor (71),

[0133] The base (110) is provided with a bearing (101) into which the output shaft (74) is inserted,

[0134] : A hydraulic control unit (100) as described in any of 1 I to

[0007] .

[0135] [ 0 0 6 6 ]

[0136] Furthermore, the saddle-type vehicle according to the present invention includes the following embodiments.

[0137] : 9 ] : 1 I to [ 8 l comprising a hydraulic control unit (100) as described in any one of the items,

[0138] Saddle-type vehicle (200).

[0139] [Explanation of Symbols]

[0140] [ 0 0 6 7 ]

[0141] ! 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, 72 rotor, 73 housing, 74 output shaft, 74a rotating shaft, 75 eccentric part, 8〇 cover, 81 cylindrical part, 82 flange part, 83 connecting part, 84 welded part, 9〇 buffer part, 91 gap, 1〇1 bearing, 11〇 base body, 110a surface, 111 recess, Illa bottom, 111b stepped part, 112 plastically deformed part, 113 bearing recess, 12〇 housing for control board, 200 saddle-type vehicle, MP master cylinder port, WP wheel cylinder port.

Claims

【Document Name 】Claims

1.

2. The buffer portion (90) is provided at a position opposite to the plastic deformation portion (112). A hydraulic control unit according to claim 1 (100).

3. The cover (80) has a connection portion (83) to the housing (73), which is provided at the end (80b) opposite to the bottom end (80a) of the recess (111) in the axial direction of the output shaft (74) of the motor unit (70), A hydraulic control unit according to claim 1 (100).

4. The connecting portion (83) is a welded portion (84) formed by welding the cover (80) and the housing (73). A hydraulic control unit (100) according to claim 3.

5. The buffer portion (90) is provided at a position opposite to the plastic deformation portion (112), and in a region closer to the connecting portion (83) than the position opposite to the buffer portion. A hydraulic control unit (100) according to claim 3.

6. The width (W) of the buffer portion (90) in the direction perpendicular to the axial direction of the output shaft (74) of the motor unit (70) increases as it approaches the position facing the plastic deformation portion (112). A hydraulic control unit according to claim 1 (100).

7. The buffer portion (90) is a gap (91) provided between the cover (80) and the housing (73). A hydraulic control unit according to any one of claims 1 to 6 (100).

8. The output shaft (74) of the motor unit (70) is connected to the rotor (72). A bearing (101) is provided on the base (110) and into which the output shaft (74) is inserted. Furthermore, A hydraulic control unit according to any one of claims 1 to 6 (100).

9. A saddle-type vehicle (200) comprising a hydraulic control unit (100) according to any one of claims 1 to 6.

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