Hydraulic control unit and saddle-type vehicle

Abstract

To provide a liquid pressure control unit for a saddle-riding type vehicle which can be miniaturized.SOLUTION: A liquid pressure control unit is a liquid pressure control unit of a brake system mounted on a saddle-riding type vehicle, includes a base formed with a flow channel of a brake liquid, a motor unit as a driving source of a pump imparting a pressure to the brake liquid in the flow channel, a control board of a control device for controlling the motor unit, and a housing which holds the control board and is fixed to the base, wherein at least a part of the motor unit is arranged between the base and the housing, and in a state where the housing is fixed to the base, the motor unit is sandwiched between the substrate and the housing.SELECTED DRAWING: Figure 3

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] Conventional vehicles include those equipped with a hydraulic control unit that controls the pressure of brake fluid in a hydraulic circuit filled with brake fluid. The hydraulic control unit, for example, increases or decreases the pressure of the brake fluid in the hydraulic circuit in a state where a vehicle occupant is operating an input unit such as a brake lever, adjusts the braking force generated on the wheels, and executes antilock brake control. Among such hydraulic control units, there are those in which a flow path constituting a part of the hydraulic circuit, a motor unit that is a drive source for applying pressure to the brake fluid in the flow path, and a control board of a control device that controls the motor unit are unitized (see, for example, Patent Document 1).

[0003] Specifically, a conventional unitized hydraulic control unit includes a base body in which a flow path for brake fluid is formed, a motor unit that is a drive source for applying pressure to the brake fluid in the flow path, a control board of a control device that controls the motor unit, and a housing that holds the control board and is fixed to the base body. Further, in the conventional hydraulic control unit, the motor unit and the housing are fixed to the base body. At this time, the motor unit is disposed at a position opposite to the housing with respect to the base body. Further, in the conventional hydraulic control unit, the motor unit is fixed to the base body by bolting.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Saddle-type vehicles, a type of vehicle, have less flexibility in component layout compared to vehicles such as four-wheeled automobiles, and therefore less flexibility in mounting hydraulic control units. As a result, there has been a growing need for miniaturization of hydraulic control units installed in saddle-type vehicles.

[0006] The present invention was made against the backdrop of the above-mentioned problems, and its first objective is to provide a hydraulic control unit for a saddle-type vehicle that can be miniaturized. The second objective of the present invention is to provide a saddle-type vehicle equipped with such a hydraulic control unit. [Means for solving the problem]

[0007] The hydraulic control unit according to the present invention is a hydraulic control unit for a brake system mounted on a saddle-type vehicle, comprising: a base body in which a flow path for brake fluid is formed; a motor unit which is a drive source for a pump that applies pressure to the brake fluid in the flow path; a control board for a control device that controls the motor unit; and a housing which holds the control board and is fixed to the base body, wherein at least a part of the motor unit is disposed between the base body and the housing, and in the state in which the housing is fixed to the base body, The motor unit (40) is pressed by the wall portion (72) of the housing (70), The motor unit is sandwiched between the base and the housing.

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

[0009] In the hydraulic control unit according to the present invention, at least a portion of the motor unit is positioned between the base and the housing. Therefore, the hydraulic control unit according to the present invention can be made smaller than conventional hydraulic control units in which the motor unit is positioned on the opposite side of the housing with respect to the base.

[0010] In conventional hydraulic control units, where the motor unit is positioned on the opposite side of the housing relative to the base, the motor unit was fixed to the base by bolts. However, in hydraulic control units according to the present invention, where at least a portion of the motor unit is positioned between the base and the housing, there may be a desire to fix the motor unit to the base with a simpler configuration. Therefore, in the hydraulic control unit according to the present invention, the motor unit is sandwiched between the base and the housing, and the housing is also used as a fixing member for the motor unit. As a result, in the hydraulic control unit according to the present invention, the motor unit can be fixed when fixing the housing to the base, so bolting can be omitted as needed. [Brief explanation of the drawing]

[0011] [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. [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. [Figure 3] This is a partial cross-sectional view of a unitized portion of a hydraulic control unit according to an embodiment of the present invention, viewed from the side. [Modes for carrying out the invention]

[0012] The hydraulic control unit and saddle-type vehicle according to the present invention will be described below with reference to the drawings.

[0013] The following description will focus on the application of the present invention to motorcycles, but the present invention may also be applied to other saddle-type vehicles. A saddle-type vehicle refers to a vehicle on which a rider straddles and rides. Other saddle-type vehicles other than motorcycles include, for example, three-wheeled vehicles powered by at least one of an engine and an electric motor, and buggies. Another example of a saddle-type vehicle other than a motorcycle is a bicycle. 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. Motorcycles and three-wheeled vehicles refer to so-called motorcycles, and motorcycles include motorcycles, scooters, electric scooters, etc.

[0014] Furthermore, the configurations and operations described below are merely examples, and the hydraulic control unit and saddle-type vehicle according to the present invention are not limited to such configurations and operations. For example, although the following description describes a case where the hydraulic control unit has two hydraulic circuits, the number of hydraulic circuits in the hydraulic control unit is not limited to two. The hydraulic control unit may have only one hydraulic circuit, or it may have three or more hydraulic circuits.

[0015] Furthermore, in each figure, identical or similar components or parts are given the same reference numeral, or the reference numeral is omitted. In addition, detailed structural elements are simplified or omitted as appropriate. Also, redundant explanations are simplified or omitted as appropriate.

[0016] Embodiment. <Configuration and Operation of Brake System for Saddle-Type Vehicles> The configuration and operation of the brake system according to this embodiment will be described. Figure 1 shows the configuration of a saddle-type vehicle equipped with a brake system having a hydraulic control unit according to an embodiment of the present invention. Figure 2 shows the configuration of a brake system having a hydraulic control unit according to an embodiment of the present invention.

[0017] As shown in FIGS. 1 and 2, the braking system 10 is mounted on a saddle-type vehicle 100, such as a motorcycle. The saddle-type vehicle 100 includes a body 1, a handle 2 rotatably held on the body 1, a front wheel 3 rotatably held on the body 1 together with the handle 2, and a rear wheel 4 pivotally held on the body 1.

[0018] The braking system 10 includes a brake lever 11, a first hydraulic circuit 12 filled with brake fluid, a brake pedal 13, and a second hydraulic circuit 14 filled with brake fluid. The brake lever 11 is provided on the handle 2 and is operated by the user's hand. The first hydraulic circuit 12 generates a braking force corresponding to the operation amount of the brake lever 11 on a rotor 3a that rotates with the front wheel 3. The brake pedal 13 is provided at the lower part of the body 1 and is operated by the user's foot. The second hydraulic circuit 14 generates a braking force corresponding to the operation amount of the brake pedal 13 on a rotor 4a that rotates with the rear wheel 4.

[0019] Note that the brake lever 11 and the brake pedal 13 are examples of the input part of the brake. For example, as the input part of the brake replacing the brake lever 11, a brake pedal different from the brake pedal 13 provided on the body 1 may be adopted. Also, for example, as the input part of the brake replacing the brake pedal 13, a brake lever different from the brake lever 11 provided on the handle 2 may be adopted. Further, the first hydraulic circuit 12 may generate a braking force corresponding to the operation amount of the brake lever 11 or the operation amount of a brake pedal different from the brake pedal 13 provided on the body 1 on the rotor 4a that rotates with the rear wheel 4. Also, the second hydraulic circuit 14 may generate a braking force corresponding to the operation amount of the brake pedal 13 or the operation amount of a brake lever different from the brake lever 11 provided on the handle 2 on the rotor 3a that rotates with the front wheel 3.

[0020] The first hydraulic circuit 12 and the second hydraulic circuit 14 have the same configuration. Therefore, hereinafter, the configuration of the first hydraulic circuit 12 will be described as a representative example. The first hydraulic circuit 12 includes a master cylinder 21 containing a piston (not shown), a reservoir 22 attached to the master cylinder 21, a brake caliper 23 having a brake pad (not shown), and a wheel cylinder 24 that operates the brake pad (not shown) of the brake caliper 23.

[0021] A brake fluid flow path is formed in the base body 61 of the hydraulic control unit 60 provided in the first hydraulic circuit 12. In the present embodiment, a main flow path 25, a sub-flow path 26, and a pressure boosting flow path 27 are formed in the base body 61 as brake fluid flow paths. In the first hydraulic circuit 12, the master cylinder 21 and the wheel cylinder 24 communicate with each other through a liquid pipe connected between the master cylinder 21 and a master cylinder port MP formed in the base body 61, the main flow path 25 formed in the base body 61, and a liquid pipe connected between the wheel cylinder 24 and a wheel cylinder port WP formed in the base body 61. Further, the brake fluid of the wheel cylinder 24 is discharged to a middle portion 25a of the main flow path through the sub-flow path 26. Further, the brake fluid of the master cylinder 21 is supplied to a middle portion 26a of the sub-flow path through the pressure boosting flow path 27.

[0022] A suction valve 28 is provided in the region of the main flow path 25 that is closer to the wheel cylinder 24 than the intermediate section 25a of the main flow path. The opening and closing operation of the suction valve 28 opens and closes the flow path portion of the main flow path 25 at the location of the suction valve 28, thereby controlling the flow rate of brake fluid circulating in this region. In the region of the secondary flow path 26 that is upstream of the intermediate section 26a of the secondary flow path, a release valve 29 and an accumulator 30 for storing brake fluid are provided in order from upstream. The opening and closing operation of the release valve 29 opens and closes the flow path portion of the secondary flow path 26 at the location of the release valve 29, thereby controlling the flow rate of brake fluid circulating in this region. Furthermore, a pump 31 for applying pressure to the brake fluid in the secondary flow path 26 is provided in the region of the secondary flow path 26 that is downstream of the intermediate section 26a of the secondary flow path. A switching valve 32 is provided in the region of the main flow path 25 that is closer to the master cylinder 21 than the intermediate section 25a of the main flow path. The opening and closing operation of the switching valve 32 opens and closes the flow path portion of the main flow path 25 where the switching valve 32 is installed, thereby controlling the flow rate of brake fluid circulating in this region. A pressure boosting valve 33 is provided in the pressure boosting flow path 27. The opening and closing operation of the pressure boosting valve 33 opens and closes the flow path portion of the pressure boosting flow path 27 where the pressure boosting valve 33 is installed, thereby controlling the flow rate of brake fluid circulating in the pressure boosting flow path 27.

[0023] In the following, when referring collectively to the intake valve 28, release valve 29, switching valve 32, and pressure boosting valve 33 that open and close the brake fluid passage formed in the base 61 without distinction, they will be referred to as the hydraulic pressure regulating valve 36.

[0024] Furthermore, a master cylinder hydraulic pressure sensor 34 is provided in the region of the main flow path 25 on the master cylinder 21 side of the switching valve 32 to detect the hydraulic pressure of the brake fluid in the master cylinder 21. In addition, a wheel cylinder hydraulic pressure sensor 35 is provided in the region of the main flow path 25 on the wheel cylinder 24 side of the filling valve 28 to detect the hydraulic pressure of the brake fluid in the wheel cylinder 24.

[0025] In other words, the main passage 25 connects the master cylinder port MP and the wheel cylinder port WP via the filling valve 28. The secondary passage 26 is defined as a passage that releases brake fluid from the wheel cylinder 24 to the master cylinder 21 via the release valve 29, either in whole or in part. The pressure boosting passage 27 is defined as a passage that supplies brake fluid from the master cylinder 21 to the upstream side of the secondary passage 26 to the pump 31 via the pressure boosting valve 33, either in whole or in part.

[0026] The suction valve 28 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 29 is a solenoid valve that, for example, switches the flow of brake fluid toward the intermediate section 26a of the sub-flow path via its installation location from closed to open when the system is energized from a non-energized state. The switching valve 32 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 pressure boosting valve 33 is a solenoid valve that, for example, switches the flow of brake fluid toward the intermediate section 26a of the sub-flow path via its installation location from closed to open when the system is energized from a non-energized state.

[0027] The pump 31 of the first hydraulic circuit 12 and the pump 31 of the second hydraulic circuit 14 are driven by a common motor unit 40. In other words, the motor unit 40 is the power source for the pumps 31.

[0028] The hydraulic control unit 60 is composed of a base 61, various components provided on the base 61 (such as a filling valve 28, a release valve 29, an accumulator 30, a pump 31, a switching valve 32, a pressure boosting valve 33, a master cylinder hydraulic pressure sensor 34, a wheel cylinder hydraulic pressure sensor 35, a motor unit 40, etc.), and a control unit (ECU) 50.

[0029] The control device 50 may be a single unit or may be divided into multiple units. Furthermore, the control device 50 may be attached to the base 61 or to other components other than the base 61. Also, part or all of the control device 50 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, etc. As will be described later, in the hydraulic control unit 60 according to this embodiment, at least a part of the control device 50 is composed of a control board 51.

[0030] For example, under normal conditions, the control device 50 controls the loading valve 28, release valve 29, switching valve 32, and pressure boosting valve 33 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 the first hydraulic circuit 12, 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 rotor 3a of the front wheel 3, thereby braking the front wheel 3. Also, when the brake pedal 13 is operated, the piston (not shown) of the master cylinder 21 is pushed in the second hydraulic circuit 14, 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 rotor 4a of the rear wheel 4, thereby braking the rear wheel 4.

[0031] The control device 50 receives the outputs from each sensor (master cylinder hydraulic pressure sensor 34, wheel cylinder hydraulic pressure sensor 35, wheel speed sensor, acceleration sensor, etc.). In response to these outputs, the control device 50 outputs commands that control the operation of the motor unit 40, each valve, etc., and performs pressure reduction control operations, pressure boosting control operations, etc.

[0032] For example, if the control device 50 detects that the brake fluid pressure in the wheel cylinder 24 of the first hydraulic circuit 12 is excessive or potentially excessive, it will perform an operation to reduce the brake fluid pressure in the wheel cylinder 24 of the first hydraulic circuit 12. At that time, the control device 50 controls the load valve 28 to be energized, the release valve 29 to be energized, the switching valve 32 to be de-energized, and the pressure boosting valve 33 to be de-energized in the first hydraulic circuit 12 while driving the motor unit 40. In addition, if the brake fluid pressure in the wheel cylinder 24 of the second hydraulic circuit 14 is excessive or potentially excessive, the control device 50 will perform an operation to reduce the brake fluid pressure in the wheel cylinder 24 of the second hydraulic circuit 14. In this process, the control device 50 controls the second hydraulic circuit 14 to energize the suction valve 28, energize the release valve 29, de-energize the switching valve 32, and de-energize the pressure boosting valve 33, while driving the motor unit 40.

[0033] For example, if the control device 50 detects a deficiency or potential deficiency in the brake fluid pressure of the wheel cylinder 24 in the first hydraulic circuit 12, it performs an operation to increase the brake fluid pressure of the wheel cylinder 24 in the first hydraulic circuit 12. At that time, the control device 50 controls the load valve 28 to a de-energized state, the release valve 29 to a de-energized state, the switching valve 32 to an energized state, and the pressure boosting valve 33 to an energized state in the first hydraulic circuit 12 while driving the motor unit 40. Furthermore, if the control device 50 detects a deficiency or potential deficiency in the brake fluid pressure of the wheel cylinder 24 in the second hydraulic circuit 14, it performs an operation to increase the brake fluid pressure of the wheel cylinder 24 in the second hydraulic circuit 14. In this process, the control device 50 controls the second hydraulic circuit 14 to de-energize the suction valve 28, de-energize the release valve 29, energize the switching valve 32, and energize the pressure boosting valve 33, while simultaneously driving the motor unit 40.

[0034] In other words, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic circuit 12 to perform the anti-lock braking operation of the first hydraulic circuit 12. Furthermore, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic circuit 14 to perform the anti-lock braking operation of the second hydraulic circuit 14. Also, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic circuit 12 to perform the automatic pressure boosting operation of the first hydraulic circuit 12. Furthermore, the hydraulic control unit 60 can control the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic circuit 14 to perform the automatic pressure boosting operation of the second hydraulic circuit 14.

[0035] <Configuration of the hydraulic control unit> The hydraulic control unit 60 is a unitized assembly comprising a base 61, a motor unit 40, and a control board 51 of the control device 50. In this embodiment, other components (such as the hydraulic regulating valve 36, master cylinder hydraulic sensor 34, and wheel cylinder hydraulic sensor 35) provided on the base 61 are also unitized together with the base 61 and the control board 51. The configuration of the unitized parts of the hydraulic control unit 60 will be described below.

[0036] Figure 3 is a partial cross-sectional view, seen from the side, of the unitized portion of the hydraulic control unit according to an embodiment of the present invention. The base body 61 is made of a metal such as an aluminum alloy and has a shape that is approximately rectangular. The sides of the base body 61 may be flat, include curved sections, or include steps.

[0037] A housing 70 that holds the control board 51 of the control device 50 is fixed to the base body 61. The housing 70 is positioned opposite the side surface 61a of the base body 61 and is fixed to the side surface 61a, for example. The housing 70 is made of resin, for example, and has a roughly rectangular parallelepiped shape. Specifically, the housing 70 comprises a frame portion 71 and a wall portion 72. The frame portion 71 constitutes the outer periphery of the housing 70 and has a frame shape, for example. The wall portion 72 is a wall portion that closes a part of the inner periphery of the frame portion 71. Each surface of the housing 70 may be flat, may include curved portions, or may include steps.

[0038] In this embodiment, the housing 70 holds the control board 51 as follows. The housing 70 is provided with a terminal 76 on the wall portion 72. This terminal 76 has a base portion 76a fixed to the wall portion 72 and a tip portion 76b erected on the base portion 76a. As will be described later, the base portion 76a of the terminal 76 is electrically connected to the motor unit 40. On the other hand, the control board 51 has a through hole 54 formed therein. The control board 51 is held in the housing 70 by inserting the tip portion 76b of the terminal 76 into the through hole 54 of the control board 51. Also, by inserting the tip portion 76b of the terminal 76 into the through hole 54 of the control board 51, the terminal 76 and the control board 51 are electrically connected.

[0039] When the control board 51 is held in the housing 70, the control board 51 is positioned on the opposite side from the base 61 with respect to the housing 70. In other words, the control board 51 is positioned outside the housing 70. For this reason, the hydraulic control unit 60 is equipped with a cover portion 80 that covers the control board 51. That is, the control board 51 held in the housing 70 is housed between the housing 70 and the cover portion 80.

[0040] The method of holding the control board 51 by the housing 70 described above is merely one example. For example, the housing 70 may be provided with terminals different from terminal 76, and these terminals may be inserted into through-holes in the control board 51 to hold the control board 51 in the housing 70. Furthermore, the method of holding the control board 51 by the housing 70 is not limited to a configuration in which the housing 70 holds the control board 51 alone. The housing 70 and other components may jointly hold the control board 51, such as in a configuration in which the housing 70 and the lid portion 80 sandwich the control board 51.

[0041] Furthermore, a motor unit 40 is provided on the side surface 61a of the base body 61. An eccentric body 42 that rotates together with the output shaft 41 of the motor unit 40 is attached to the output shaft 41 of the motor unit 40. When the eccentric body 42 rotates, the plunger of the pump 31, which is pressed against the outer surface of the eccentric body 42, reciprocates, thereby transporting brake fluid from the suction side to the discharge side of the pump 31.

[0042] Furthermore, the motor unit 40 is equipped with a terminal 43 at the end opposite to the side where the output shaft 41 is located. Terminal 43 is electrically connected to the base 76a of terminal 76. Specifically, a through hole is formed in the wall portion 72 of the housing 70 at a position opposite to the base 76a of terminal 76. When the base 61 and the housing 70 are fixed together, terminal 43 of the motor unit 40 is inserted through the through hole in the wall portion 72 into the connection port of the base 76a of terminal 76, and is electrically connected to terminal 76. In other words, the motor unit 40 is electrically connected to the control board 51 via terminal 76. This makes it possible to supply power from the control board 51 to the motor unit 40 via terminal 76.

[0043] Incidentally, in conventional hydraulic control units, the motor unit is positioned on the opposite side of the housing with respect to the base. On the other hand, as can be seen from Figure 3, in the hydraulic control unit 60 according to this embodiment, at least a part of the motor unit 40 is positioned between the base 61 and the housing 70. Specifically, Figure 3 shows an example in which the part of the motor unit 40 other than the terminal 43 is positioned between the base 61 and the housing 70. For this reason, the hydraulic control unit 60 according to this embodiment can be made smaller compared to conventional hydraulic control units in which the motor unit is positioned on the opposite side of the housing with respect to the base.

[0044] In conventional hydraulic control units, where the motor unit is positioned on the opposite side of the housing relative to the base, the motor unit was fixed to the base by bolts. On the other hand, in hydraulic control units 60 according to this embodiment, where at least a part of the motor unit 40 is positioned between the base 61 and the housing 70, there may be a desire to fix the motor unit 40 to the base 61 with a simpler configuration. Therefore, in hydraulic control units 60 according to this embodiment, the motor unit 40 is fixed to the base 61 as follows.

[0045] As shown in Figure 3, when the housing 70 is fixed to the base 61, the motor unit 40 is sandwiched between the base 61 and the housing 70. Specifically, the motor unit 40 is sandwiched between the base 61 and the wall portion 72 of the housing 70. In other words, in the hydraulic control unit 60 according to this embodiment, the motor unit 40 is sandwiched between the base 61 and the housing 70, and the housing 70 is also used as a fixing member for the motor unit 40. Therefore, in the hydraulic control unit 60 according to this embodiment, the motor unit 40 can be fixed when fixing the housing 70 to the base 61, making it easier to fix the motor unit 40 than with bolts.

[0046] In this embodiment, when the motor unit 40 is clamped between the base 61 and the housing 70, the motor unit 40 is directly pressed against the wall portion 72 of the housing 70. However, the invention is not limited to this, and a protrusion or the like may be provided on the wall portion 72 of the housing 70, so that when the motor unit 40 is clamped between the base 61 and the housing 70, the motor unit 40 is pressed against by the protrusion or the like.

[0047] Here, the method of fixing the housing 70 to the base 61 is not particularly limited, but in this embodiment, the housing 70 is fixed to the base 61 with bolts 90. Specifically, a through hole 74 is formed in the wall portion 72 of the housing 70 into which the bolts 90 are inserted. Also, a female thread 62 is formed in the base 61. When the male thread portion 90a of the bolt 90 inserted into the through hole 74 is screwed into the female thread 62 of the base 61, the housing 70 is sandwiched between the head 90b of the bolt 90 and the base 61, and the housing 70 is fixed to the base 61.

[0048] By fixing the housing 70 to the base 61 using bolts 90, the motor unit 40 can be fixed to the base 61 using the fastening force of the bolts 90. Therefore, fixing the housing 70 to the base 61 using bolts 90 improves the reliability of fixing the motor unit 40 to the base 61. When fixing the housing 70 to the base 61 using bolts 90, a through hole 74 may be formed in the base 61 and a female screw 62 may be formed in the housing 70.

[0049] Furthermore, in this embodiment, the housing 70 is also fixed to the base 61 by adhesive. Specifically, at least a portion of the surface of the housing 70 facing the base 61 is bonded to the base 61. More specifically, in the housing 70 according to this embodiment, the end face 71a of the frame portion 71 on the base 61 side becomes the surface facing the base 61. Therefore, in the housing 70 according to this embodiment, at least a portion of the end face 71a of the frame portion 71 is bonded to the base 61.

[0050] By fixing the housing 70 to the base 61 using both bolts 90 and adhesive, the reliability of fixing the motor unit 40 to the base 61 is improved. Furthermore, when fixing the housing 70 to the base 61 using both bolts 90 and adhesive, a jig for holding the housing 70 and the base 61 until the adhesive dries is not required, which is another benefit. The housing 70 may also be fixed to the base 61 by adhesive alone. In this case, the space required for the bolts 90 is eliminated, allowing the hydraulic control unit 60 to be made even smaller.

[0051] In this embodiment, the motor unit 40 is fixed to the base 61 not only by being sandwiched between the base 61 and the housing 70, but also by so-called crimping. Specifically, the motor unit 40 is equipped with a flange 44 that protrudes outward. On the other hand, the base 61 has a recess 63 that opens on the side surface 61a and houses at least a part of the motor unit 40. Furthermore, a plastic deformation portion 64 is formed on the inner circumferential surface 63a of the recess 63. The plastic deformation portion 64 in this embodiment is a stepped portion that shifts the inner circumferential surface 63a of the recess 63 in a direction away from the motor unit 40. For example, the plastic deformation portions 64 are arranged at 90° pitches on the inner circumferential surface 63a of the recess 63.

[0052] When fixing the motor unit 40 to the base body 61, the motor unit 40 is inserted into the recess 63. In this state, a jig is inserted from above into the space on the outer circumference side of the motor unit 40 within the recess 63, and the jig plastically deforms the upper surface of the plastic deformation portion 64 by applying pressure. As a result, the plastic deformation portion 64 deforms to cover the upper surface of the flange 44 of the motor unit 40, that is, a part of the end face on the opening side of the recess 63 of the flange 44 of the motor unit 40. In this way, the flange 44 of the motor unit 40 is sandwiched between the plastic deformation portion 64 formed on the inner circumferential surface 63a of the recess 63 and the bottom 63b of the recess 63, and the motor unit 40 is fixed to the base body 61. By fixing the motor unit 40 to the base body 61 in this way by crimping, bolts for fixing the motor unit 40 are unnecessary compared to fixing the motor unit 40 to the base body 61 with bolts, and it is also unnecessary to form female threaded portions in the base body 61 into which the bolts are screwed. Therefore, by fixing the motor unit 40 to the base body 61 by crimping in this manner, the hydraulic control unit 60 can be further miniaturized.

[0053] The bottom 63b of the recess 63 is not limited to a flat surface, but may include a step, as shown in Figure 3, for example. The flange 44 of the motor unit 40 may be directly or indirectly clamped between the plastically deformable portion 64 and the bottom 63b of the recess 63. Direct clamping of the flange 44 between the plastically deformable portion 64 and the bottom 63b means that only the flange 44 is clamped between the plastically deformable portion 64 and the bottom 63b. Indirect clamping of the flange 44 between the plastically deformable portion 64 and the bottom 63b means that the flange 44 and other components are clamped between the plastically deformable portion 64 and the bottom 63b.

[0054] Furthermore, at least one coil 37 is arranged on the side surface 61a of the base body 61. The coil 37 drives a hydraulic pressure regulating valve 36 that opens and closes a flow path formed in the base body 61. Specifically, the magnetic force generated in the coil 37 by energizing it moves the plunger of the hydraulic pressure regulating valve 36, thereby opening and closing the flow path portion in the flow path formed in the base body 61 where the hydraulic pressure regulating valve 36 is installed. For example, if the hydraulic pressure regulating valve 36 is a suction valve 28, energizing the coil 37 provided in correspondence with the suction valve 28 moves the plunger of the suction valve 28, closing the location where the suction valve 28 is installed in the main flow path 25, which was previously in an open state.

[0055] The coil 37 is equipped with terminals 37a. The control board 51 has a through hole 55 into which the terminals 37a of the coil 37 are inserted. The wall portion 72 of the housing 70 also has a through hole at a position opposite to the terminals 37a. When the base 61 and the housing 70 are fixed together, the terminals 37a of the coil 37 are inserted through the through hole in the wall portion 72 into the through hole 55 of the control board 51, and are electrically connected to the control board 51. This makes it possible to supply current from the control board 51 to the coil 37.

[0056] As can be seen in Figure 3, in the hydraulic control unit 60 according to this embodiment, at least a portion of the coil 37 is positioned between the base 61 and the housing 70. Specifically, Figure 3 shows an example where the portion of the coil 37 other than the terminal 37a is positioned between the base 61 and the housing 70. When the housing 70 is fixed to the base 61, the coil 37 is sandwiched between the base 61 and the housing 70. Specifically, the coil 37 is sandwiched between the base 61 and the wall portion 72 of the housing 70. In other words, in the hydraulic control unit 60 according to this embodiment, the housing 70 is also used as a fixing member for the coil 37. Therefore, since the hydraulic control unit 60 according to this embodiment does not require a dedicated part for fixing the coil 37, the hydraulic control unit 60 can be further miniaturized.

[0057] In this embodiment, a protrusion 75 is provided on the wall portion 72 of the housing 70, and when the coil 37 is sandwiched between the base 61 and the housing 70, the coil 37 is pressed by the protrusion 75. However, this is not the only option; for example, when the coil 37 is sandwiched between the base 61 and the housing 70, the coil 37 may be pressed directly by the wall portion 72 of the housing 70.

[0058] Furthermore, in this embodiment, the base 61 and the coil 37 are also fixed together by adhesive. This improves the reliability of the coil 37's fixation to the base 61.

[0059] <Effects of the hydraulic control unit> The effects of the hydraulic control unit 60 according to this embodiment will be explained.

[0060] The hydraulic control unit 60 according to this embodiment is a hydraulic control unit for a brake system 10 mounted on a saddle-type vehicle 100. The hydraulic control unit 60 comprises a base body 61 in which a flow path for brake fluid is formed, a motor unit 40 which is the drive source for a pump 31 that applies pressure to the brake fluid in the flow path, a control board 51 of a control device 50 that controls the motor unit 40, and a housing 70 which holds the control board 51 and is fixed to the base body 61. At least a part of the motor unit 40 is positioned between the base body 61 and the housing 70. When the housing 70 is fixed to the base body 61, the motor unit 40 is sandwiched between the base body 61 and the housing 70.

[0061] The hydraulic control unit 60 configured in this way can be made smaller compared to conventional hydraulic control units in which the motor unit is positioned on the opposite side of the housing relative to the base. Furthermore, with the hydraulic control unit 60 configured in this way, the motor unit 40 can be fixed when fixing the housing 70 to the base 61, so the motor unit 40 can be fixed more simply than with bolts.

[0062] Preferably, the hydraulic control unit 60 includes a coil 37 that drives a hydraulic regulating valve 36 that opens and closes a flow path formed in the base body 61. At least a portion of the coil 37 is positioned between the base body 61 and the housing 70. When the housing 70 is fixed to the base body 61, the coil 37 is sandwiched between the base body 61 and the housing 70. In this configuration, the hydraulic control unit 60 also utilizes the housing 70 as a fixing member for the coil 37. Therefore, since a dedicated part for fixing the coil 37 is not required in this configuration, the hydraulic control unit 60 can be further miniaturized.

[0063] Preferably, the motor unit 40 is provided with a flange 44 that protrudes outward. The base body 61 has a recess 63 in which at least a portion of the motor unit 40 is housed. A plastically deformable portion 64 is formed on the inner circumferential surface 63a of the recess 63. The flange 44 is sandwiched between the plastically deformable portion 64 and the bottom portion 63b of the recess 63. Compared to the case where the motor unit 40 is fixed to the base body 61 with bolts, the hydraulic control unit 60 can be made even smaller.

[0064] Preferably, the housing 70 is fixed to the base 61 with bolts 90. With the hydraulic control unit 60 configured in this way, the motor unit 40 can be fixed to the base 61 using the fastening force of the bolts 90, thus improving the reliability of the fixation of the motor unit 40 to the base 61.

[0065] Preferably, at least a portion of the surface of the housing 70 facing the base 61 is bonded to the base 61. By fixing the housing 70 to the base 61 using both bolts 90 and adhesive, the reliability of fixing the motor unit 40 to the base 61 is improved. Furthermore, when fixing the housing 70 to the base 61 using both bolts 90 and adhesive, there is the added benefit of not needing a jig to hold the housing 70 and the base 61 together until the adhesive dries. Also, when fixing the housing 70 to the base 61 using only adhesive, the space required for the bolts 90 is eliminated, allowing the hydraulic control unit 60 to be made smaller.

[0066] The hydraulic control unit 60 according to this embodiment has been described above, but the hydraulic control unit according to the present invention is not limited to the description of this embodiment. The hydraulic control unit according to the present invention may be implemented in only a part of this embodiment. For example, in the hydraulic control unit 60 according to this embodiment, the motor unit 40 was fixed to the base body 61 not only by being sandwiched between the base body 61 and the housing 70, but also by so-called crimping. However, the hydraulic control unit according to the present invention may be configured to fix the motor unit 40 to the base body 61 only by being sandwiched between the base body 61 and the housing 70 without using crimping. By fixing the motor unit 40 to the base body 61 without using crimping, the following effects can be obtained, for example. For example, the crimping process can be omitted, so the assembly man-hours of the hydraulic control unit according to the present invention can be reduced. Also, for example, contamination that occurs in the crimping process can be prevented, so a decrease in the reliability of the hydraulic control unit according to the present invention due to contamination can be suppressed. Furthermore, since the formation of plastically deformed parts 64, for example, becomes unnecessary, the shape of the base body 61 is simplified, and the cost of the hydraulic control unit according to the present invention can be reduced. [Explanation of Symbols]

[0067] 1 Body, 2 Handle, 3 Front wheel, 3a Rotor, 4 Rear wheel, 4a Rotor, 10 Brake system, 11 Brake lever, 12 First hydraulic circuit, 13 Brake pedal, 14 Second hydraulic circuit, 21 Master cylinder, 22 Reservoir, 23 Brake caliper, 24 Wheel cylinder, 25 Main flow path, 25a Main flow path section, 26 Secondary flow path, 26a Secondary flow path section, 27 Pressure boosting flow path, 28 Loading valve, 29 Release valve, 30 Accumulator, 31 Pump, 32 Switching valve, 33 Pressure boosting valve, 34 Master cylinder hydraulic sensor, 35 Wheel cylinder hydraulic sensor, 36 Hydraulic regulating valve, 37 Coil, 37a Terminal, 40 Motor unit, 41 Output shaft, 42 Eccentric body, 43 Terminal, 44 Flange, 50 Control device, 51 Control board, 54 Through hole, 55 Through hole, 60 Hydraulic control unit, 61 Base, 61a Side, 62 Female thread, 63 Recess, 63a Inner circumferential surface, 63b Bottom, 64 Plastically deformed part, 70 Housing, 71 Frame, 71a End face, 72 Wall, 74 Through hole, 75 Protrusion, 76 Terminal, 76a Base, 76b Tip, 80 Cover, 90 Bolt, 90a Male thread, 90b Head, 100 Saddle-type vehicle, MP Master cylinder port, WP Wheel cylinder port.

Claims

1. A hydraulic control unit (60) of a brake system (10) mounted on a saddle-type vehicle (100), A base body (61) in which brake fluid passages (25, 26, 27) are formed, A motor unit (40) which is the driving source for a pump (31) that applies pressure to the brake fluid in the flow path (26), The control board (51) of the control device (50) that controls the motor unit (40), A housing (70) that holds the control board (51) and is fixed to the base body (61), Equipped with, At least a portion of the motor unit (40) is positioned between the base (61) and the housing (70), When the housing (70) is fixed to the base (61), the motor unit (40) is pressed by the wall portion (72) of the housing (70), so that the motor unit (40) is sandwiched between the base (61) and the housing (70). Hydraulic control unit (60).

2. The system includes a coil (37) that drives a hydraulic pressure regulating valve (36) that opens and closes the aforementioned flow paths (25, 26, 27), At least a portion of the coil (37) is positioned between the base (61) and the housing (70), When the housing (70) is fixed to the base (61), the coil (37) is sandwiched between the base (61) and the housing (70). The hydraulic control unit (60) according to claim 1.

3. The motor unit (40) is equipped with a flange (44) that protrudes outward, The base (61) has a recess (63) in which at least a part of the motor unit (40) is housed. A plastically deformed portion (64) is formed on the inner circumferential surface (63a) of the recess (63). The flange (44) is sandwiched between the plastically deformed portion (64) and the bottom portion (63b) of the recess (63). A hydraulic control unit (60) according to claim 1 or claim 2.

4. The housing (70) is fixed to the base (61) with bolts (90). A hydraulic control unit (60) according to claim 1 or claim 2.

5. At least a portion of the surface (71a) of the housing (70) that faces the base (61) is bonded to the base (61). A hydraulic control unit (60) according to claim 1 or claim 2.

6. With the housing (70) fixed to the base (61), the wall portion (72) of the housing (70) directly presses against the motor unit (40). A hydraulic control unit (60) according to claim 1 or claim 2.

7. In a state in which the housing (70) is fixed to the base (61), a protrusion provided on the wall portion (72) of the housing (70) presses against the motor unit (40). A hydraulic control unit (60) according to claim 1 or claim 2.

8. The hydraulic control unit (60) is provided according to claim 1 or claim 2. Saddle-type vehicle (100).

9. The saddle-type vehicle (100) according to claim 8, which is a motorcycle.

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