Liquid-pressure control unit and saddle-riding vehicle

Abstract

Provided is a liquid-pressure control unit capable of improving output from a component of a liquid-pressure control mechanism. A liquid-pressure control unit 10 comprises: a liquid-pressure control mechanism that includes a base body 60 and a component that is incorporated in the base body 60 and is for controlling braking liquid-pressure; a control circuit 73 that controls operation of the component; a first power supply line L1 that electrically connects an on-vehicle power supply 91 to be installed in a motorcycle 1 and the control circuit 73; and a second power supply line L2 that electrically connects the on-vehicle power supply 91 and the component. The first power supply line L1 includes a step-down circuit 92 that converts a voltage supplied from the on-vehicle power supply 91 into a first operation voltage for operating the control circuit 73, and supplies the first operation voltage to the control circuit 73. The second power supply line supplies a voltage higher than the first operation voltage to the component.

Description

[Document name] Statement

[0002] [Name of invention] Hydraulic pressure control unit and saddle-ride type vehicle

[0004] [Technical Field]

[0006]

. 0 0 1

[0008] The present invention relates to a hydraulic pressure control unit that controls the hydraulic pressure of brake fluid in a brake system of a saddle-ride type vehicle, and to a saddle-ride type vehicle equipped with the hydraulic pressure control unit.

[0010] [Background technology]

[0012]

. 0 0 2

[0014] Some conventional saddle-ride vehicles (e.g., motorcycles) are equipped with a hydraulic control unit that controls the hydraulic pressure of brake fluid in a brake system that brakes the wheels. Such hydraulic control units include, for example, a hydraulic control mechanism (e.g., an electromagnetic valve, a pump, etc.) that includes components (e.g., a solenoid, a motor, etc.) that operate when supplied with power and that controls the hydraulic pressure of the brake fluid, and a control board (e.g., a controller, etc.) that controls the operation of the hydraulic control mechanism (see, for example, Patent Document 1).

[0016] [Prior art documents]

[0018] [Patent documents]

[0020]

〇 0 0 3

[0022] [Patent Document 1] Japanese Patent Application Laid-open No. 11-26-86-28

[0024] Summary of the Invention

[0026] [Problem to be solved by the invention]

[0028]

〇 0 0 4

[0030] In a hydraulic control unit such as that described in Patent Document 1, the power line that supplies power to the control board from a power source such as an on-board power supply is branched off and connected to the components of the hydraulic control mechanism, and power is supplied to the components at the same voltage as that supplied to the control board, so the voltage that operates the components is limited to the voltage supplied to the control board, and it may not be possible to increase the output of the components.

[0032]

〇 0 0 5

[0034] The present invention has been made in light of the above-mentioned problems, and has as its object to provide a hydraulic control unit that can improve the output of components in a hydraulic control mechanism.

[0036]

〇 0 0 6

[0038] The hydraulic control unit of the present invention is a hydraulic control unit that controls the hydraulic pressure of brake fluid in a brake system of a saddle-ride type vehicle, and comprises: a base body in which a hydraulic path for the brake fluid is formed; a hydraulic control mechanism incorporated in the base body and including components for controlling the brake hydraulic pressure; a control circuit that controls the operation of the components; a first power supply line that electrically connects an on-board power supply mounted on the saddle-ride type vehicle to the control circuit; and a second power supply line that electrically connects the on-board power supply to the components, wherein the first power supply line has a first conversion unit that converts voltage supplied from the power supply into a first operating voltage that operates the control circuit, and supplies the first operating voltage to the control circuit; and the second power supply line is configured to supply a voltage higher than the first operating voltage to the components.

[0040]

〇 0 0 7

[0042] With this configuration, the first power supply line supplies a first operating voltage to the control circuit via the first conversion unit, and the second power supply line supplies a voltage higher than the first operating voltage to the component. Therefore, the hydraulic control unit can use a general-purpose control circuit that operates at the first operating voltage, while operating the component at a voltage higher than the first operating voltage to improve its output.

[0044]

〇 0 0 8

[0046] A saddle-ride type vehicle according to the present invention is configured to include the hydraulic pressure control unit described above. With this configuration, the same effects as those of the hydraulic pressure control unit can be achieved, and in the saddle-ride type vehicle, while using a general-purpose control circuit that operates at a first operating voltage, the components can be operated at a voltage higher than the first operating voltage, thereby improving their output.

[0048] [ 0 0 0 9 ]

[0050] The present invention may have only the invention-specific matters set forth in the claims, or may have the invention-specific matters as well as other features.

[0052] [Brief explanation of the drawings]

[0054] [ 0 0 1 0 ]

[0056] [Figure 1] A diagram for explaining a motorcycle on which an embodiment of the hydraulic control unit is installed.

[0058] [Figure 2] A diagram for explaining the brake system of a motorcycle.

[0060] [Figure 3] A diagram for explaining the hydraulic control unit.

[0062] [Figure 4] A diagram for explaining the hydraulic control unit.

[0064] [Figure 5] A diagram to explain the hydraulic control unit.

[0066] [Figure 6] A diagram to explain the power supply circuit of the hydraulic control unit.

[0068] [Figure 7] A diagram to explain the power supply circuit of the hydraulic control unit.

[0070] [Figure 8] A diagram for explaining the relationship between motor torque and rotation speed.

[0072] [Mode for Carrying Out the Invention]

[0074] [ 0 0 1 1 ]

[0076] Hereinafter, an embodiment of a hydraulic control unit according to the present invention and a saddle-ride type vehicle equipped with the hydraulic control unit will be described with reference to the drawings. In this embodiment, an example will be described in which the hydraulic control unit is mounted on a motorcycle as a saddle-ride type vehicle, but the hydraulic control unit according to the present invention may also be mounted on saddle-ride type vehicles other than motorcycles. A saddle-ride type vehicle refers to any vehicle on which a rider straddles and rides. Examples of saddle-ride type vehicles include motorcycles, buggies, and bicycles. Motorcycles include motorcycles, three-wheeled vehicles, motorbikes, scooters, electric scooters, and the like, which use an engine or an electric motor as a propulsion source. Furthermore, a bicycle refers to any vehicle that can be propelled by the rider's pedaling force applied to the pedals. Bicycles include standard bicycles, electrically assisted bicycles, and electric bicycles.

[0078] [ 0 0 1 2 ]

[0080] In addition, in this embodiment, an example of a configuration in which the hydraulic control unit has two hydraulic circuits and two pumps is described, but the hydraulic control unit may have only one hydraulic circuit, or may have three or more hydraulic circuits. Furthermore, the hydraulic control unit may have only one pump, or may have three or more pumps. In addition, in this embodiment, a case in which the hydraulic control unit is applied to a brake system that brakes the front and rear wheels of a motorcycle is described, but the hydraulic control unit may be applied to a brake system that brakes only one of the front and rear wheels.

[0082] [ 0 0 1 3 ]

[0084] Furthermore, the configuration, operation, etc. of the hydraulic control unit described in this embodiment are merely examples, and the hydraulic control unit according to the present invention is not limited to such configuration, operation, etc. Furthermore, in each drawing, the same or similar members or parts may be assigned the same reference numerals or may not be assigned the reference numerals at all. Furthermore, illustrations of detailed structures may be simplified or omitted as appropriate.

[0086] [ 0 0 1 4 ]

[0088] The hydraulic control unit 10 according to this embodiment will be described below with reference to Figs. 1 to 8. Fig. 1 is a diagram illustrating a motorcycle 1 equipped with the hydraulic control unit 10. Fig. 2 is a diagram illustrating a brake system 100 of the motorcycle 1. Figs. 3 to 5 are diagrams illustrating the hydraulic control unit 10. Figs. 6 and 7 are diagrams illustrating a power supply circuit 90 of the hydraulic control unit 10. Fig. 8 is a diagram illustrating the relationship between motor torque and rotational speed.

[0090] [ 0 0 1 5 ] <About saddle-type vehicles and brake systems>

[0092] A motorcycle 1 as a saddle-ride type vehicle equipped with a hydraulic pressure control unit 1 〇 and a brake system 1 〇〇 of the motorcycle 1 controlled by the hydraulic pressure control unit 1 〇 will be described with reference to Figures 1 and 2.

[0094] [ 0 0 1 6 ]

[0096] As shown in FIG. 1, the motorcycle 1 comprises a body 2, a handlebar 3 rotatably mounted on the body 2, a front wheel 4 rotatably mounted on the body 2 together with the handlebar 3, a rear wheel 5 rotatably mounted on the body 2 and driven by a drive source (not shown, for example, an engine, an electric motor, etc.), a front wheel disc rotor 4a that rotates with the front wheel 4, a rear wheel disc rotor 5a that rotates with the rear wheel 5, a brake system 100 that brakes the front wheel 4 and the rear wheel 5, and a hydraulic control unit 10 that controls the brake system 100.

[0098] [ 0 0 1 7 ]

[0100] As shown in FIG. 2, the brake system 100 includes a first operator 6 and a second operator 7 operated by the rider, a front wheel braking mechanism 20 that brakes the front wheel 4, a rear wheel braking mechanism 30 that brakes the rear wheel 5, a front wheel friction member 25 that generates a friction force on the front wheel disc rotor 4a, a rear wheel friction member 35 that generates a friction force on the rear wheel disc rotor 5a, and a hydraulic control unit 10.

[0102] [ 0 0 1 8 ]

[0104] In this embodiment, the first operator 6 is, for example, a brake lever provided on the handlebar 3 and operated by the rider's hand, and the second operator 7 is, for example, a brake pedal provided on the lower part of the body 2 and operated by the rider's foot.

[0106] [ 0 0 1 9 ]

[0108] As shown in Figure 2, the front wheel braking mechanism 20 is composed of a first master cylinder 21 to which the movement of the first operating element 6 is transmitted, a first brake fluid reservoir 22 attached to the first master cylinder 21, a first wheel cylinder 24 connected to the first master cylinder 21 via a first fluid path 23 filled with brake fluid, a front wheel friction member 25 pressed against the front wheel disc rotor 4a by the hydraulic pressure of the brake fluid in the first wheel cylinder 24, and a hydraulic pressure control unit b1〇 described later. The rear wheel braking mechanism 30 is composed of a second master cylinder 31 to which the movement of the second operating element 7 is transmitted, a second reservoir 32 of brake fluid attached to the second master cylinder 31, a second wheel cylinder 34 connected to the second master cylinder 31 via a second fluid path 33 filled with brake fluid, a rear wheel friction member 35 pressed against the rear wheel disc rotor 5a by the hydraulic pressure of the brake fluid in the second wheel cylinder 34, and a hydraulic pressure control unit b1〇. As will be described later, portions 23b, 23c, 33b, and 33c of the first fluid path 23 and the second fluid path 33 are formed as internal fluid paths in the base body 60 of the hydraulic control unit 10. The hydraulic control unit 10 is disposed, for example, in the body 2 of the motorcycle 1 (see FIG. 1).

[0110] [ 0 0 2 0 ]

[0112] The front wheel braking mechanism 20 is configured to press a front wheel friction member 25 against a front wheel disc rotor 4a in accordance with the amount of operation of a first operating element 6 to generate a frictional force, and to generate a braking force on the front wheel 4 in accordance with the amount of operation of the first operating element 6. The rear wheel braking mechanism 30 is configured to press a rear wheel friction member 35 against a rear wheel disc rotor 5a in accordance with the amount of operation of a second operating element 7 to generate a frictional force, and to generate a braking force on the rear wheel 5 in accordance with the amount of operation of the second operating element 7.

[0114] [ 0 0 2 1 ]

[0116] In this embodiment, the brake system 100 is configured to have a brake lever as the first operator 6 and a brake pedal as the second operator 7, but the brake system is not limited to this example and may, for example, be configured to have a brake pedal as the first operator and a brake lever as the second operator, or may be configured to have one or more brake levers as the first operator and the second operator, or may be configured to have one or more brake pedals as the first operator and the second operator.

[0118] [ 0 0 2 2 ]

[0120] In this embodiment, the front wheel braking mechanism 20 and the rear wheel braking mechanism 30 are configured to generate frictional force by pressing a friction member against a disc rotor, but the front wheel braking mechanism and the rear wheel braking mechanism may be configured to generate frictional force by, for example, pressing a friction member of a brake shoe against a brake drum that rotates together with the wheel, or may be configured to generate frictional force by pressing a friction member against the disc rotor or brake drum using an actuator that is electrically connected to an operator and is operated in response to operation of the operator. Also, the brake system may be configured to include only one of the front wheel braking mechanism or the rear wheel braking mechanism.

[0122] [ 0 0 2 3 ]

[0124] <About the hydraulic control unit>

[0126] The hydraulic pressure control unit 100 that controls the brake hydraulic pressure of the brake system 100 of the motorcycle 1 will be described with reference to Figures 2 to 5.

[0128] [ 0 0 2 4 ]

[0130] As shown in FIG. 2, the hydraulic control unit 10 includes a first main fluid passage 23b connecting the first master cylinder 21 and the first wheel cylinder 24, a first solenoid valve 40a arranged in the first main fluid passage 23b, a first sub-fluid passage 23c branched from a region of the first main fluid passage 23b closer to the first wheel cylinder 24 than the first solenoid valve 40a and connected to a region of the first main fluid passage 23b closer to the first master cylinder 21 than the first solenoid valve 40a, a second solenoid valve 40b arranged in the first sub-fluid passage 23c, and a second solenoid valve 40b arranged in the first sub-fluid passage 23c. The first sub-fluid passage 23c includes a first accumulator 26 that is arranged in an area closer to the first master cylinder 21 than the first accumulator 26 and that temporarily stores brake fluid, and a first pump 27 that is arranged in an area of ​​the first sub-fluid passage 23c that is closer to the first master cylinder 21 than the first accumulator 26. The first main fluid passage 23b and the first sub-fluid passage 23c form part of the above-mentioned first fluid passage 23.

[0132] [ 0 0 2 5 ]

[0134] The hydraulic control unit 10 also includes a second main fluid line 33b connecting the second master cylinder 31 and the second wheel cylinder 34, a third solenoid valve 40c arranged in the second main fluid line 33b, a second sub-fluid line 33c branched from a region of the second main fluid line 33b closer to the second wheel cylinder 34 than the third solenoid valve 40c and connected to a region of the second main fluid line 33b closer to the second master cylinder 31 than the third solenoid valve 40c, a fourth solenoid valve 40d arranged in the second sub-fluid line 33c, and a fourth solenoid valve 40d arranged in the second sub-fluid line 33c. The second sub-fluid passage 33c includes a second accumulator 36 that is disposed in an area on the second master cylinder 31 side and temporarily stores brake fluid, and a second pump 37 that is disposed in an area of ​​the second sub-fluid passage 33c that is closer to the second master cylinder 31 than the second accumulator 36. The second main fluid passage 33b and the second sub-fluid passage 33c form part of the second fluid passage 33 described above.

[0136] [ 0 0 2 6 ]

[0138] In the first to fourth solenoid valves 40a to 40d, the first to fourth coils 42a to 42d (see FIG. 5) corresponding to each solenoid valve are controlled to an energized or de-energized state by a control circuit 73 of a control board 70 (described later), thereby controlling the operation of the first to fourth valve bodies 41a to 41d corresponding to each coil so that each fluid path is opened or closed. Hereinafter, the first to fourth solenoid valves 40a to 40d may be referred to as a fluid pressure control mechanism that controls the hydraulic pressure of the brake fluid. Furthermore, the first to fourth coils 42a to 42d may be referred to as components for controlling the brake hydraulic pressure.

[0140] [ 0 0 2 7 ]

[0142] The first pump 27 pumps up the brake fluid stored in the first accumulator 26 and outputs it to the first main fluid line 23b. The second pump 37 pumps up the brake fluid stored in the second accumulator 36 and outputs it to the second main fluid line 33b. The first pump 27 and the second pump 37 are driven by a common electric motor 50. The motor 50's operation (stopped state and rotating state) is controlled by a control circuit 73 (described below) that controls the energized and de-energized states. Hereinafter, the first pump 27 and the second pump 37 may be referred to as a hydraulic pressure control mechanism that controls the hydraulic pressure of the brake fluid. The motor 50 may also be referred to as a component for controlling the brake hydraulic pressure.

[0144] [ 0 0 2 8 ]

[0146] The control board 70 includes a printed circuit board 72 (hereinafter, sometimes simply referred to as the board). Mounted on the board 72 are electrical wiring and various electronic components that constitute a control circuit 73 that controls the operation of the components 42a to 42d, 50 of the hydraulic control mechanisms 40a to 40d, 27, and 37. The control circuit 73 is electrically connected to the electrical terminals 43a to 43d of the first to fourth coils 42a to 42d, the electrical terminal 53 of the motor 50, output terminals of various sensors (not shown), and a connector pin 75 that is connected to an on-board power supply 91 (described below) provided outside the hydraulic control unit 10. The control circuit 73 also includes a controller 71 that controls the components 42a to 42d and 50. The control board 70 can control the operation of the components of the hydraulic control mechanism by the controller 71 executing a predetermined program or the like. The controller 71 is a general-purpose controller that operates at a first operating voltage (e.g., 5 V and / or 3.3 V, etc.) as described below.

[0148] [ 0 0 2 9 ]

[0150] The controller 71 may be a single unit or may be divided into multiple units. Part or all of the controller 71 may be configured as, for example, a microcomputer, a microprocessor unit, or may be configured to be updatable by software such as firmware, or may be a program module executed by commands from a CPU, etc. Furthermore, the controller 71 may be configured to be provided on a single board, or may be configured to be provided on multiple boards.

[0152] [ 0 0 3 0 ]

[0154] The controller 71 also includes an acquisition unit 71a that acquires the detection results of various sensors (e.g., a hydraulic pressure sensor that detects the hydraulic pressure of the brake fluid, a wheel speed sensor that detects the rotational speed of the wheels, an acceleration sensor that detects the acceleration in the roll, pitch, and yaw directions of the motorcycle 1, etc.), and an execution unit 71b that controls the operation of the brake system 100 (e.g., normal operation, pressure reduction operation, etc., described below) based on the various information acquired by the acquisition unit 71a (see Figure 5).

[0156] [ 0 0 3 1 ]

[0158] For example, during normal operation, the control board 70 controls the first solenoid valve 40a and the third solenoid valve 40c to an open state and the second solenoid valve 40b and the fourth solenoid valve 40d to a closed state. When the rider operates the first operating element 6 in this state, the plunger 27f of the first master cylinder 21 is pressed in accordance with the amount of operation of the first operating element 6, increasing the hydraulic pressure of the brake fluid in the first master cylinder 21. The increased hydraulic pressure is supplied to the first wheel cylinder 24 via the first main hydraulic line 23b, increasing the hydraulic pressure of the brake fluid in the first wheel cylinder 24. The front wheel friction member 25 is then pressed against the front wheel disc rotor 4a in accordance with the hydraulic pressure in the first wheel cylinder 24, generating a frictional force that brakes the front wheel 4. When the rider operates the second operating element 7, the plunger (not shown) of the second master cylinder 31 is pressed in accordance with the amount of operation of the second operating element 7, increasing the hydraulic pressure of the brake fluid in the second master cylinder 31. The increased hydraulic pressure is supplied to the second wheel cylinder 34 via the second main hydraulic path 33b, increasing the hydraulic pressure of the brake fluid in the second wheel cylinder 34. The rear wheel friction member 35 is then pressed against the rear wheel disc rotor 5a in accordance with the hydraulic pressure in the second wheel cylinder 34, generating a frictional force that brakes the rear wheel 5.

[0160] [ 0 0 3 2 ]

[0162] Furthermore, for example, as control of the antilock brake operation of the front wheels, the control board 70 executes a pressure reducing operation to reduce the hydraulic pressure of the brake fluid in the first wheel cylinder 24 when it determines, based on the detection results of various sensors, that the rotation of the front wheels 4 is locked or there is a possibility that the rotation of the front wheels 4 may lock. During the pressure reducing operation of the first wheel cylinder 24, the controller 71 controls the first solenoid valve 40a to a closed state and the second solenoid valve 40b to an open state, while controlling the motor 50 to drive. As a result, the brake fluid is released from the first wheel cylinder 24 to the first accumulator 26, the hydraulic pressure of the brake fluid in the first wheel cylinder 24 is reduced, and the braking force of the front wheels 4 is reduced, thereby unlocking the rotation of the front wheels 4 or preventing the front wheels 4 from locking. In addition, the brake fluid released into the first accumulator 26 is pumped up by the first pump 27 driven by the motor 50 and returned to the area of ​​the first main fluid path 23b that is closer to the first master cylinder 21 than the first solenoid valve 40a.

[0164] [ 0 0 3 3 ]

[0166] Furthermore, for example, as control of the antilock brake operation of the rear wheels, the control board 70 executes a pressure reducing operation to reduce the hydraulic pressure of the brake fluid in the second wheel cylinder 34 when it determines, based on the detection results of various sensors, that the rotation of the rear wheels 5 is locked or there is a possibility that the rotation of the rear wheels 5 may lock. During the pressure reducing operation of the second wheel cylinder 34, the controller 71 controls the third solenoid valve 40c to a closed state and the fourth solenoid valve 40d to an open state, while controlling the motor 50 to operate. As a result, the brake fluid is released from the second wheel cylinder 34 to the second accumulator 36, the hydraulic pressure of the brake fluid in the second wheel cylinder 34 is reduced, and the braking force of the rear wheels 5 is reduced, thereby unlocking the rotation of the rear wheels 5 or preventing them from locking. In addition, the brake fluid released into the second accumulator 36 is pumped up by the second pump 37 driven by the motor 50 and returned to the area of ​​the second main fluid path 33b closer to the second master cylinder 31 than the fourth solenoid valve 40d.

[0168] [ 0 0 3 4 ]

[0170] In addition, the hydraulic control unit 10 may be configured to include a hydraulic pressure sensor that detects the hydraulic pressure of the brake fluid input from the first master cylinder 21 and the second master cylinder 31, and / or a hydraulic pressure sensor that detects the hydraulic pressure of the brake fluid output to the first wheel cylinder 24 and the second wheel cylinder 34.Such a hydraulic pressure sensor may be, for example, configured to be arranged in the main flow path or sub-flow path of the hydraulic control unit, or configured to be arranged in a brake fluid pipe connected to the main flow path, or configured to be arranged in the master cylinder or wheel cylinder.

[0172] [ 0 0 3 5 ]

[0174] Furthermore, the hydraulic control unit 10 may be configured to include, for example, a fluid path that allows the first pump 27 to pump up brake fluid from the first reservoir 22 and output the brake fluid to the first wheel cylinder 24. In such a configuration, the control board 70 may be configured to, for example, perform a front wheel pressure-increasing operation to increase the hydraulic pressure of the brake fluid in the first wheel cylinder 24 with the brake fluid output by the first pump 27 when it is determined based on the detection results of various sensors that the braking force of the front wheels 4 is insufficient or may become insufficient. In such a configuration, the pressure-increasing operation can increase the braking force of the front wheels 4 to compensate for the insufficient braking force.

[0176] [ 0 0 3 6 ]

[0178] Furthermore, the hydraulic control unit 10 may be configured to include, for example, a fluid path that allows the second pump 37 to pump up brake fluid from the second reservoir 32 and output the brake fluid to the second wheel cylinder 34. In such a configuration, the control board 70 may be configured to, for example, perform a rear wheel pressure-increasing operation to increase the hydraulic pressure of the brake fluid in the second wheel cylinder 34 with the brake fluid output by the second pump 37 when it is determined based on the detection results of various sensors that the braking force of the rear wheels 5 is insufficient or may become insufficient. In such a configuration, the rear wheel pressure-increasing operation increases the braking force of the rear wheels 5, thereby making up for the lack of braking force.

[0180] [ 0 0 3 7 ]

[0182] As shown in Figures 3 to 5, the hydraulic control unit 10 is configured as a unit comprising a base 60 in which part of the brake fluid path described above is formed as an internal fluid path, first to fourth solenoid valves 40a to 40d, a first pump 27 and a second pump 37, a first accumulator 26 and a second accumulator 36, a motor 50, a control board 70, and a housing 80 that houses the control board 70, etc.

[0184] [ 0 0 3 8 ]

[0186] The base body 60 is formed, for example, from a rectangular parallelepiped block of aluminum. The above-mentioned brake fluid paths 23b, 23c, 33a, and 33c are formed in the base body 60. A motor hole 61H for accommodating the motor 50 and valve holes 62H for accommodating the first to fourth solenoid valves 40a to 40d are formed in a first surface 60A that constitutes the exterior of the base body 60, and the motor 50 and the first to fourth solenoid valves 40a to 40d are assembled in these holes. A pump hole 64H is formed in a second surface 60B and a third surface 60C extending from the first surface 60A, and the plungers of the first pump 27 and the second pump 37 are respectively accommodated therein. A fourth surface 60D extending from the first to third surfaces 60A to 60C is formed with an accumulator hole 65H that accommodates the first accumulator 26 and the second accumulator 36. Furthermore, a fifth surface 60E opposite the fourth surface 60D is formed with first to fourth master cylinder ports P1 to P4.

[0188] [ 0 0 3 9 ]

[0190] The motor 50 is attached to the base 60 by inserting one end of the output shaft 51, which is rotated by the motor body, into the motor hole 61H. An eccentric 52 is attached to one end of the output shaft 51, which rotates together with the output shaft 51 to reciprocate the plunger. The motor 50 also has an electrical terminal 53, which is electrically connected to the control board 70, at the end opposite to the end where the output shaft 51 is provided.

[0192] [ 0 0 4 0 ]

[0194] The first to fourth solenoid valves 40a to 40d are each composed of a valve element 41a to 41d and a coil 42a to 42d. The first to fourth valve elements 41a to 41d of the first to fourth solenoid valves 40a to 40d are inserted into the valve holes 62H, and the first to fourth coils 42a to 42d of the first to fourth solenoid valves 40a to 40d are erected on the first surface 60A of the base 60, thereby assembling the first to fourth solenoid valves 40a to 40d to the base 60.

[0196] [ 0 0 4 1 ]

[0198] The housing 80 is made of resin, for example, and includes a first housing 81 that houses the first to fourth solenoid valves 40a to 40d and the motor 50, and a second housing 87 that houses the control board 70. When the first housing 81 is attached to the base 60, it includes an enclosing portion 81a that encloses the first to fourth solenoid valves 40a to 40d and the motor 50, and a connector portion 81b that houses the connector pin 75. When attached to the first housing 81, the second housing 87 covers the control board 70 and closes the opening 84 of the first housing 81. The first housing 81 and the second housing 87 are fixed to each other by the engagement of the protrusion 86 of the first housing 81 with the engagement portion 88 of the second housing 87.

[0200] [ 0 0 4 2 ]

[0202] As described above, the hydraulic control unit 10 comprises a base 60 in which the brake fluid paths 23, 33 are formed, components 42a to 42d, 50 that are incorporated into the base 60 and are used to control the hydraulic pressure of the brake fluid in the brake system 100 mounted on the motorcycle 1 as a saddle-ride type vehicle, and a control circuit 73 that controls the operation of the components 42a to 42d, 50, and is configured to control the hydraulic pressure of the brake fluid in the brake system 100 by controlling the operation of the components 42a to 42d, 50 using the control circuit 73. The hydraulic control unit 10 may be configured to include at least one of the first to fourth solenoid valves 40a to 40d, the first pump 27, and the second pump 37 as a hydraulic control mechanism, and may be configured to include at least one of the coils 42a to 42d and the motor 50 as a component.

[0204] [ 0 0 4 3 ]

[0206] <About the power supply circuit configuration of the hydraulic control unit>

[0208] The power supply circuit 90 that supplies power to the components 42a to 42d, 50 included in the hydraulic control mechanisms 40a to 40d, 27, 37 of the hydraulic control unit 10, and to the control circuit 73 that controls the operation of the components 42a to 42d, 50, will be described with reference to Figures 6 to 8.

[0210] [ 0 0 4 4 ]

[0212] As shown in Figures 6 and 7, the power supply circuit 90 includes an on-board power supply 91, a step-down circuit 92, a step-up circuit 93, a switching element 94, a switch drive circuit 95, components 42a to 42d, 50, a control circuit 73, a first power supply line L1, a second power supply line L2, and a third power supply line L3.

[0214] [ 0 0 4 5 ]

[0216] The on-board power supply 91 is a power supply device that outputs a power supply voltage (e.g., 3.6 V or 4.8 V, etc.) higher than the first operating voltage (e.g., 5 V and / or 3.3 V, etc.) of the controller 71 included in the above-mentioned control circuit 73, and is, for example, a storage battery mounted on the body of the motorcycle 1. The on-board power supply 91 supplies power to the hydraulic control unit 10 via the above-mentioned connector pin 75. The on-board power supply 91 may, for example, supply power to a drive motor (not shown) that drives the wheels of the motorcycle 1, and also supply power to a hydraulic control unit 10 that is an on-board device of the motorcycle 1 other than the drive motor, or it may be a power supply device different from the power supply device that supplies power to the drive motor of the motorcycle 1 and supply power to on-board devices including the hydraulic control unit 10, or it may supply power only to the hydraulic control unit 10. The on-board power supply 91 may also be, for example, a power generation device.

[0218] [ 0 0 4 6 ]

[0220] The step-down circuit 92 is a conversion circuit that steps down the input power to a predetermined output voltage lower than the input voltage and outputs it, and is, for example, a DC / DC converter that includes a switching element (e.g., an FET, a transistor, etc.) and generates the predetermined output voltage by controlling the ON / OFF time of the switching element. The step-down circuit 92 converts the power supply voltage (e.g., 3.6 V or 4.8 V) input from the on-board power supply 91 to a first operating voltage (e.g., 5 V and / or 3.3 V) that is lower than the power supply voltage and that operates the control circuit 73, and outputs the first operating voltage. The step-down circuit 92 is not limited to being configured by a DC / DC converter, and may be configured by, for example, a linear regulator that steps down the input voltage to a predetermined output voltage (e.g., the first operating voltage) by controlling the ON resistance of a switching element, or may be configured by a circuit that steps down the input voltage to a predetermined output voltage by a resistive element. The step-down circuit 92 in this embodiment corresponds to the first conversion unit in the present invention.

[0222] [ 0 0 4 7 ]

[0224] The boost circuit 93 is a conversion circuit that boosts input power to a predetermined output voltage higher than the input voltage and outputs it. For example, it is a charge pump equipped with a switching element (e.g., an FET, a transistor, etc.) and a capacitor, and generates the predetermined output voltage by controlling the ON / OFF time of the switching element and switching the connection method of the capacitor. The boost circuit 93 converts the power supply voltage (e.g., 36 [V] or 48 [V], etc.) input from the on-board power supply 91 to a second operating voltage (e.g., 55-60 [V], etc.) that is higher than the power supply voltage and operates the switch drive circuit 95, and outputs the second operating voltage. By configuring the boost circuit 93 as a charge pump, the conversion circuit can be configured with a switching element and a capacitor, which simplifies the circuit configuration compared to, for example, a configuration using a DC / DC converter. The boost circuit 93 may be configured as a DC / DC converter that includes, for example, a switching element (e.g., an FET, a transistor, etc.), a capacitor, and an inductor (coil), and that boosts the input voltage to a predetermined output voltage (e.g., a second operating voltage) by controlling the N resistance of the switching element and by controlling the switching of the connection method of the capacitor and the inductor. The boost circuit 93 in this embodiment corresponds to the second conversion unit in the present invention.

[0226] [ 0 0 4 8 ]

[0228] The switching element 94 is an element, such as a field-effect transistor (e.g., an N-type MOSFET), that switches between a conducting state in which the input side and the output side are electrically connected and power is passed through, and a non-conducting state in which the input side and the output side are electrically disconnected, in response to a drive signal output from the switch drive circuit 95. A corresponding switching element is provided for each of the components 42a to 42d, 50. Note that the switching element 94 may be configured such that a common element is provided for some or all of the components. Furthermore, using an N-type MOSFET as the switching element 94 allows a relatively large current to be supplied to the components 42a to 42d, 50 compared to using a P-type MOSFET, thereby improving the design flexibility of the power supply circuit 90.

[0230] [ 0 0 4 9 ]

[0232] The switch drive circuit 95 is a circuit that generates a drive signal that switches the switching element 94 between a conductive state and a non-conductive state, and is operated by the power of the first operating voltage supplied from the step-down circuit 92 and the power of the second operating voltage supplied from the step-up circuit 93.The switch drive circuit 95 generates a drive signal according to a control signal input from the controller 71 and outputs it to the switching element 94 to be controlled, thereby controlling the operation of each component 42a to 42d, 50.

[0234] [ 0 0 5 0 ]

[0236] The control circuit 73 includes a controller 71, a switch drive circuit 95, a first input terminal, and a second input terminal. A first operating voltage input to the first input terminal is branched and supplied to the controller 71 and the switch drive circuit 95. A second operating voltage input to the second input terminal is supplied to the switch drive circuit 95.

[0238] [ 0 0 5 1 ]

[0240] The first power supply line L1 electrically connects a first input terminal of the control circuit 73 to an output terminal (anode side) of the on-board power supply 91. A step-down circuit 92 is arranged on the first power supply line L1 between the on-board power supply 91 and the control circuit 73. A first operating voltage, which is stepped down from the power supply voltage of the on-board power supply 91 by the step-down circuit 92, is input to a first input terminal of the control circuit 73, and the first operating voltage is supplied to the controller 71 and the switch drive circuit 95.

[0242] [ 0 0 5 2 ]

[0244] The second power supply line L2 electrically connects the output terminal (anode side) of the on-board power supply 91 to the input terminals of the components 42a to 42d, 50. A switching element 94 corresponding to each component is arranged on the second power supply line L2 between the on-board power supply 91 and the component, and when the corresponding switching element 94 is in a conducting state, the power supply voltage of the on-board power supply 91 is supplied to the corresponding component 42a to 42d, 50, while when the corresponding switching element 94 is in a non-conducting state, the power supply from the on-board power supply 91 to the components 42a to 42d, 50 is cut off.

[0246] [ 0 0 5 3 ]

[0248] The third power supply line L3 electrically connects the output terminal (anode side) of the on-board power supply 91 to the second input terminal of the control circuit 73. A boost circuit 93 is arranged on the third power supply line L3 between the on-board power supply 91 and the control circuit 73, and a second operating voltage boosted by the boost circuit 93 from the power supply voltage of the on-board power supply 91 is input to the second input terminal of the control circuit 73, and the second operating voltage is supplied to the switch drive circuit 95. Note that the third power supply line L3 may be configured to include, for example, a boost circuit that electrically connects the step-down circuit 92 and the control circuit 73 and converts the output voltage of the step-down circuit 92 to the second operating voltage.

[0250] [ 0 0 5 4 ]

[0252] The step-down circuit 92, the step-up circuit 93, the switching element 94, the switch drive circuit 95, the first power supply line L1, the second power supply line L2, and the third power supply line L3 are mounted on a common substrate 72 together with the above-mentioned control circuit 73. In addition, the negative electrode side of the power supply circuit 90 is grounded to the body of the motorcycle 1.

[0254] [ 0 0 5 5 ]

[0256] Furthermore, the power supply circuit 90 includes at least one of the connector pins 75 described above, and the portion of the power supply circuit 90 on the substrate 72 is connected to the on-board power supply 91 via the connector pin 75. The first power supply line L1, the second power supply line L2, and the third power supply line L3 are connected to the on-board power supply 91 via a common connector pin 75. As a result, for example, in a hydraulic control unit 10 for a saddle-ride vehicle, which has a smaller body volume than a four-wheeled vehicle and therefore requires miniaturization of various on-board devices, it is possible to reduce the number of connector pins and wiring cables in the power supply circuit 90 that connect the on-board power supply 91 to the hydraulic control unit 10, thereby reducing the volume and weight of the hydraulic control unit 10.

[0258]

[0056] For example, as shown in FIG. 8, in the relationship between the rotational speed S and torque T of motor 50, when the voltage V supplied to motor 50 is constant, the rotational speed S tends to decrease as the torque T increases. Furthermore, increasing the voltage supplied to motor 50 from V1 to V2 tends to increase the rotational speed S and torque T of motor 50. Furthermore, in the relationship between the voltage applied to coils 42a to 42d of solenoid valves 40a to 40d and the attractive force, the attractive force tends to increase as the voltage supplied to coils 42a to 42d increases (not shown). Therefore, by increasing the voltage supplied to coils 42a to 42d and motor 50, the output of these components can be improved.

[0260] [ 0 0 5 7 ]

[0262] As described above, the hydraulic control unit 10 includes a power supply circuit 90 that supplies power to the control circuit 73 and the components 42a to 42d, 50. The power supply circuit 90 includes a first power supply line L1 that electrically connects the on-board power supply 91 mounted on the motorcycle 1 to the control circuit 73 of the hydraulic control unit 10, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50. The first power supply line L1 has a step-down circuit 92 as a first conversion unit that converts the power supply voltage supplied from the on-board power supply 91 into a first operating voltage for the control circuit 73, and supplies the first operating voltage to the control circuit 73. The second power supply line L2 A power supply voltage higher than the operating voltage is supplied to the components 42a to 42d and 5.

[0264] [ 0 0 5 8 ]

[0266] In this embodiment, the control circuit 73, the first power supply line L1, and the second power supply line L2 are mounted on a common substrate 72, but at least one of the first power supply line L1 and the second power supply line L2 may be mounted on a substrate different from the substrate 72 on which the control circuit 73 is mounted. Alternatively, both the first power supply line L1 and the second power supply line L2 may be mounted on a substrate different from the substrate 72 on which the control circuit 73 is mounted, or the first power supply line L1 may be mounted on a first substrate different from the substrate 72 on which the control circuit 73 is mounted, and the second power supply line L2 may be mounted on a third substrate different from the first substrate and the substrate 72 on which the control circuit 73 is mounted. Furthermore, at least a part or all of the first to third power supply lines L1 to L3 may be configured as pattern wiring provided on a printed circuit board, or may be configured as wiring cables or the like covered with an insulating material such as rubber.

[0268] [ 0 0 5 9 ]

[0270] In this embodiment, the power supply circuit 90 is configured to include a step-down circuit 92 that reduces the power supply voltage of the on-board power supply 91 to the first operating voltage of the control circuit 73, i.e., a configuration in which the power supply voltage is converted to the first operating voltage using one step-down circuit, but it may also be configured to reduce the power supply voltage to the first operating voltage through two or more steps using two or more step-down circuits, or it may be configured to convert the power supply voltage to the first operating voltage using a combination of a step-down circuit and a step-up circuit. For example, the power supply circuit 9 〇 may be configured to include a first step-down circuit and a second step-down circuit as conversion circuits that convert input power into a predetermined output voltage different from the input voltage, with the first step-down circuit converting the power supply voltage (e.g., 3.6 V or 4.8 V, etc.) into a first voltage (e.g., 1.2 V, etc.) that is lower than the power supply voltage and higher than the first operating voltage of the control circuit 73, and the second step-down circuit converting the first voltage into the first operating voltage (e.g., 5 / 3.3 V, etc.).

[0272] [ 0 0 6 0 ]

[0274] <About the effects>

[0276] Conventionally, some saddle-ride type vehicles (e.g., motorcycles, etc.) are equipped with a hydraulic control unit that controls the hydraulic pressure of brake fluid in a brake system that brakes the wheels. Such hydraulic control units include, for example, a hydraulic control mechanism (e.g., a solenoid valve, a pump, etc.) that controls the hydraulic pressure of the brake fluid and includes components (e.g., a solenoid, a motor, etc.) that operate when supplied with power, and a control board (e.g., a controller, etc.) that controls the operation of the hydraulic control mechanism. The components of the hydraulic control mechanism tend to have higher output as the voltage applied to them increases. However, in a hydraulic control unit configured such that, for example, a power line that supplies power to the control board from a power source such as an on-board power supply branches off and is connected to the components of the hydraulic control mechanism, and power is supplied to the components at the same voltage as the voltage supplied to the control board, the voltage applied to the components may be limited to the voltage supplied to the control board, making it difficult to increase the output of the components.

[0278] [ 0 0 6 1 ]

[0280] In contrast, the hydraulic control unit 10 of this embodiment is a hydraulic control unit that controls the hydraulic pressure of brake fluid in a brake system 100 mounted on a motorcycle 1 as a saddle-ride type vehicle, and includes a base 60 in which a hydraulic path for the brake fluid is formed, hydraulic control mechanisms 40a to 40d, 27, 37 that are incorporated into the base 60 and include components 42a to 42d, 50 for controlling the brake hydraulic pressure, a control circuit 73 that controls the operation of the components 42a to 42d, 50, a first power supply line L1 that electrically connects an on-board power supply 91 mounted on the motorcycle 1 to the control circuit 73, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50. The first power supply line L1 has a step-down circuit 92 as a first conversion unit that converts the voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73. The second power supply line is configured to supply the power supply voltage of the on-board power supply 91, which is a voltage higher than the first operating voltage, to the components 42a to 42d, 50.

[0282] [ 0 0 6 2 ]

[0284] With this configuration, the first power supply line L1 converts the voltage supplied from the on-board power supply 91 to a first operating voltage using the step-down circuit 92 as a first conversion unit and supplies it to the control circuit 73, and the second power supply line L2 supplies a power supply voltage higher than the first operating voltage to the components 42a to 42d, 50.Therefore, the hydraulic control unit 10 can use a general-purpose control circuit 73 that operates at the first operating voltage, while operating the components 42a to 42d, 50 at a voltage higher than the first operating voltage, thereby improving the output of the components 42a to 42d, 50.

[0286] [ 0 0 6 3 ]

[0288] The hydraulic control unit 10 of this embodiment includes a control circuit 73 that controls the operation of the components 42a to 42d, 50 of the hydraulic control mechanisms 40a to 40d, 27, 37, a first power supply line L1 that electrically connects the control circuit 73 to an on-board power supply 91 mounted on the motorcycle 1, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50, the first power supply line L1 having a step-down circuit 92 as a first conversion unit that converts a voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73, and the second power supply line L2 The configuration supplies a voltage higher than the operating voltage to components 42a to 42d, 50, and the control circuit 73, the first power supply line L!, and the second power supply line L2 are mounted on a common substrate 72.

[0290] [ 0 0 6 4 ]

[0292] According to this configuration, the control circuit 73, the first power supply line L1, and the second power supply line L2 are mounted on a common board 72. Therefore, the board 72 can be disposed inside the housing 80 of the hydraulic control unit 10, facilitating the assembly of the hydraulic control unit 10.

[0065]

[0294] The hydraulic control unit 10 of this embodiment includes a control circuit 73 that controls the operation of the components 42a to 42d, 50 of the hydraulic control mechanisms 40a to 40d, 27, 37, a first power supply line L1 that electrically connects an on-board power supply 91 mounted on the motorcycle 1 to the control circuit 73, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50, the first power supply line L1 having a step-down circuit 92 as a first conversion unit that converts a voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73, and the second power supply line L2 The configuration supplies a voltage higher than the operating voltage of the vehicle power supply 91 to the components 42a to 42d, 50, and includes a step-down circuit 92 as a first conversion unit that steps down the power supply voltage of the vehicle power supply 91 and converts it to the first operating voltage using a DC / DC converter that generates a predetermined output voltage by controlling the ON / OFF time of a switching element.

[0296] [ 0 0 6 6 ]

[0298] According to this configuration, the step-down circuit 92 as the first conversion unit uses a DC / DC converter to step down the power supply voltage of the on-board power supply 91 and convert it to the first operating voltage, so that the first operating voltage can be supplied to the control circuit 3 while maintaining a relatively high power conversion efficiency.

[0300] [ 0 0 6 7 ]

[0302] The hydraulic control unit 10 of this embodiment includes a control circuit 73 that controls the operation of the components 42a to 42d, 50 of the hydraulic control mechanisms 40a to 40d, 27, 37, a first power supply line L1 that electrically connects an on-board power supply 91 mounted on the motorcycle 1 to the control circuit 73, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50, the first power supply line L1 having a step-down circuit 92 as a first conversion unit that converts a voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73, and the second power supply line L2 The first power supply line L2 is configured to supply a voltage higher than the first operating voltage to components 42a to 42d, 50, and the second power supply line L2 is configured to supply the power supply voltage of the on-board power supply 91 to components 42a to 42d, 50 as a voltage higher than the first operating voltage.

[0304] [ 0 0 6 8 ]

[0306] With this configuration, the power supply voltage of the on-board power supply 91 is supplied to the components 42a to 42d, 50 via the second power supply line L2, so that the hydraulic control unit 10 can operate the components 42a to 42d, 50 with the power supply voltage of the on-board power supply 91, which is a voltage higher than the first operating voltage, thereby improving the output of the components 42a to 42d, 50.

[0308] [ 0 0 6 9 ]

[0310] The hydraulic control unit 10 of this embodiment includes a control circuit 73 that controls the operation of the components 42a to 42d, 50 of the hydraulic control mechanisms 40a to 40d, 27, 37, a first power supply line L1 that electrically connects the control circuit 73 to an on-board power supply 91 mounted on the motorcycle 1, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50, the first power supply line L1 having a step-down circuit 92 as a first conversion unit that converts a voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73, and the second power supply line L2 The brake fluid supply system is configured to supply a voltage higher than the operating voltage to components 42a to 42d, 50, which are motors 50 that drive pumps 27, 37 that move brake fluid through fluid paths 23, 33.

[0312] [ 0 0 7 0 ]

[0314] With this configuration, the second power supply line L2 supplies a voltage higher than the first operating voltage to the motor 50 as a component, so that the hydraulic control unit 10 can use a general-purpose control circuit 73 that operates at the first operating voltage while operating the motor 50 at a voltage higher than the first operating voltage, thereby improving the output of the motor 50.

[0316] [ 0 0 7 1 ]

[0318] The hydraulic control unit 10 of this embodiment includes a control circuit 73 that controls the operation of the components 42a to 42d, 50 of the hydraulic control mechanisms 40a to 40d, 27, 37, a first power supply line L1 that electrically connects the control circuit 73 to an on-board power supply 91 mounted on the motorcycle 1, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50, the first power supply line L1 having a step-down circuit 92 as a first conversion unit that converts a voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73, and the second power supply line L2 The configuration is such that a voltage higher than the operating voltage is supplied to components 42a to 42d, 50, and the components are coils 42a to 42d of solenoid valves 4〇a to 4〇d that open and close brake fluid paths 23, 33.

[0320] [ 0 0 7 2 ]

[0322] With this configuration, the second power supply line L2 supplies a voltage higher than the first operating voltage to the coils 42a to 42d as components, so that the hydraulic control unit 10 can use a general-purpose control circuit 73 that operates at the first operating voltage while operating the coils 42a to 42d at a voltage higher than the first operating voltage, thereby improving the output of the coils 42a to 42d.

[0324] [ 0 0 7 3 ]

[0326] The hydraulic control unit 10 of this embodiment includes a control circuit 73 that controls the operation of the components 42a to 42d, 50 of the hydraulic control mechanisms 40a to 40d, 27, 37, a first power supply line L1 that electrically connects the control circuit 73 to an on-board power supply 91 mounted on the motorcycle 1, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50, the first power supply line L1 having a step-down circuit 92 as a first conversion unit that converts a voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73, and the second power supply line L2 The second power supply line L2 is configured to supply a voltage higher than the operating voltage of the on-board power supply 91 to the components 42a to 42d, 50, and the second power supply line L2 has a switching element 94 between the anode of the on-board power supply 91 and the components 42a to 42d, 50, which switches the flow of current from the on-board power supply 91 to the components 42a to 42d, 50 between a conducting state and a non-conducting state.

[0328] [ 0 0 7 4 ]

[0330] According to this configuration, the second power supply line L2 of the power supply circuit 90 has a switching element 94 between the anode of the on-board power supply 91 and the components 42a to 42d, 50, so that the power supply circuit 90 can be configured to easily detect short circuits, thereby increasing the degree of freedom in designing the power supply circuit 90.

[0332] [ 0 0 7 5 ]

[0334] The hydraulic control unit 10 of this embodiment includes a control circuit 73 that controls the operation of the components 42a to 42d, 50 of the hydraulic control mechanisms 40a to 40d, 27, 37, a first power supply line L1 that electrically connects the control circuit 73 to an on-board power supply 91 mounted on the motorcycle 1, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components 42a to 42d, 50, the first power supply line L1 having a step-down circuit 92 as a first conversion unit that converts a voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73, and the second power supply line L2 The hydraulic pressure control unit 10 is configured to supply a voltage higher than the operating voltage of the on-board power supply 91 to the components 42a to 42d, 5o, and the second power supply line L2 has a switching element 94 that switches the flow of current from the on-board power supply 91 to the components 42a to 42d, 5o between an energized state and a non-energized state. Furthermore, the hydraulic pressure control unit 10 includes a switch drive circuit 95 that switches the energized state and non-energized state of the switching element 94, and a third power supply line L3 that electrically connects the on-board power supply 91 and the switch drive circuit 95. The third power supply line L3 has a boost circuit 93 as a second conversion unit that converts the voltage supplied from the on-board power supply 91 into a second operating voltage that operates the switch drive circuit 95, and the second operating voltage is supplied to the switch drive circuit 95. This is a configuration in which the power is supplied to

[0336] [ 0 0 7 6 ]

[0338] With this configuration, the third power supply line L3 converts the voltage supplied by the on-board power supply 91 into a second operating voltage by the boost circuit 93 as a second conversion unit and supplies it to the switch drive circuit 95.Therefore, in the hydraulic control unit 10, the second operating voltage can be supplied to the switch drive circuit 95 while maintaining a relatively high power conversion efficiency, and the components 42a to 42d, 50 can be operated at a voltage higher than the first operating voltage, thereby improving the output of the components 42a to 42d, 50.

[0340] [ 0 0 7 7 ]

[0342] In this embodiment, the control circuit 73, the first power line L1, and the second power line L2 are mounted on the common control board 70, board 72, but the control circuit 73 may be mounted on a first board, and the first power line L1 and the second power line L2 may be mounted on a second board different from the first board. This configuration increases the degree of freedom in designing the boards on which the control circuit 73, the first power line L1, and the second power line L2 are mounted.

[0344]

[0078] In this embodiment, the control circuit 73, the first power supply line L1, and the second power supply line L2 are mounted on the common control board 70, board 72, but the control circuit 73 may be mounted on the first board, the first power supply line L1 may be mounted on a second board different from the first board, and the second power supply line may be mounted on a third board different from the first board and the second board. This configuration increases the degree of freedom in designing the boards on which the control circuit 73, the first power supply line L1, and the second power supply line L2 are mounted.

[0346] [ 0 0 7 9 ]

[0348] In this embodiment, the control circuit 73, the first power supply line L1, and the second power supply line L2 are mounted on the common control board 72, but the control circuit 73 and the first power supply line L1 may be mounted on a first board, and the second power supply line L2 may be mounted on a second board different from the first board. This configuration increases the degree of freedom in designing the boards on which the control circuit 73, the first power supply line L1, and the second power supply line L2 are mounted.

[0350] [ 0 0 8 0 ]

[0352] In this embodiment, the control circuit 73, the first power supply line L1, and the second power supply line L2 are mounted on the common control board 72, but the control circuit 73 and the second power supply line L2 may be mounted on a first board, and the first power supply line L1 may be mounted on a second board different from the first board. This configuration increases the degree of freedom in designing the boards on which the control circuit 73, the first power supply line L1, and the second power supply line L2 are mounted.

[0354] [ 0 0 8 1 ]

[0356] In this embodiment, the power supply circuit 90 of the hydraulic control unit 10 has one step-down circuit 92 as a first conversion unit that converts the power supply voltage of the on-board power supply 91 into a first operating voltage, and supplies the first operating voltage to the control circuit 73. However, the power supply circuit 90 may have multiple conversion circuits as first conversion units, and the multiple conversion circuits may convert the power supply voltage of the on-board power supply 91 into the first operating voltage and supply it to the control circuit 73. The power supply circuit 90 may have, for example, a first step-down circuit and a second step-down circuit as the multiple conversion circuits serving as the first conversion unit, in which the first step-down circuit steps down the power supply voltage to the first voltage using a DC / DC converter that generates a predetermined output voltage by controlling the ON / OFF times of a switching element, and the second step-down circuit is arranged downstream of the first step-down circuit and steps down the first voltage to the first operating voltage using a linear regulator that generates a predetermined output voltage by controlling the ON resistance of the switching element, and supplies the first operating voltage to the control circuit 73. With this configuration, the power supply voltage is stepped down and converted to the first operating voltage using the DC / DC converter and the linear regulator arranged downstream, so that the first operating voltage can be supplied to the control circuit 73 while maintaining a relatively high power conversion efficiency, thereby increasing the degree of freedom in designing the power supply circuit 90.

[0358] [ 0 0 8 2 ]

[0360] In this embodiment, the power supply circuit 9O of the hydraulic control unit 1O has a configuration in which a switching element 94 is provided in the second power supply line L2 between the output terminal (anode side) of the on-board power supply 91 and the components 42a to 42d, 50, for switching the flow of current from the on-board power supply 91 to the components 42a to 42d, 50 between a conducting state and a non-conducting state, but the power supply circuit 9O may also have a configuration in which the switching element 94 is provided on the ground side of the components 42a to 42d, 50. In such a configuration, for example, the switching element 94 can be controlled without using a boost circuit 93, and the configuration of the power supply circuit 9O can be simplified, thereby increasing the degree of freedom in designing the power supply circuit 9O.

[0362] [ 0 0 8 3 ]

[0364] In this embodiment, the power supply circuit 90 of the hydraulic control unit 10 has one boost circuit 93 as a second conversion unit that converts the power supply voltage of the on-board power supply 91 into the second operating voltage of the switch drive circuit 95, and is configured to supply the second operating voltage to the switch drive circuit 95. However, it may also be configured to have multiple conversion circuits as the second conversion unit, and to convert the power supply voltage of the on-board power supply 91 into the second operating voltage using the multiple conversion circuits and supply it to the switch drive circuit 95. The power supply circuit 90 may have, for example, a step-down circuit and a step-up circuit as multiple conversion circuits serving as the second conversion unit, and may be configured to convert the power supply voltage of the on-board power supply 91 to the second operating voltage and supply it to the switch drive circuit 95, or may have, for example, multiple step-up circuits, and may convert the power supply voltage of the on-board power supply 91 to the second operating voltage and supply it to the switch drive circuit 95. Furthermore, the power supply circuit 90 may be configured, for example, to step up the voltage stepped down by the above-mentioned first conversion unit to the second operating voltage. These configurations increase the degree of freedom in designing the power supply circuit 90.

[0366] [ 0 0 8 4 ]

[0368] The motorcycle 1 as a saddle-ride type vehicle of this embodiment includes a hydraulic pressure control unit 10 that controls brake hydraulic pressure in a brake system 10. As described above, the hydraulic pressure control unit 10 includes a base 60, hydraulic pressure control mechanisms 40a to 40d, 27, 37 that are incorporated into the base 60 and include components 42a to 42d, 50 for controlling brake hydraulic pressure, a control circuit 73 that controls the operation of the components 42a to 42d, 50, a first power supply line L1 that electrically connects an on-board power supply 91 mounted on the motorcycle 1 to the control circuit 73, and a second power supply line L2 that electrically connects the on-board power supply 91 to the components. The vehicle has a step-down circuit 92 as a first conversion unit that converts the voltage supplied from an on-board power supply 91 into a first operating voltage that operates a control circuit 73, and supplies the first operating voltage to the control circuit 73. The second power supply line is configured to supply a voltage higher than the first operating voltage to the components.

[0370] [ 0 0 8 5 ]

[0372] According to this configuration, in the hydraulic control unit 10 provided in the motorcycle 1, the first power supply line L1 has a step-down circuit 92 that converts the voltage supplied from the on-board power supply 91 into a first operating voltage that operates the control circuit 73, and supplies the first operating voltage to the control circuit 73. The second power supply line L2 supplies a power supply voltage higher than the first operating voltage to the components 42a to 42d, 50. Therefore, while using a general-purpose control circuit 73 that operates at the first operating voltage, the components 42a to 42d, 50 can be operated at a voltage higher than the first operating voltage, and the output of the components 42a to 42d, 50 can be improved.

[0374] [ 0 0 8 6 ]

[0376] Although the hydraulic control unit 10 according to the present embodiment has been described above, the hydraulic control unit according to the present invention is not limited to the description of the present embodiment. For example, only a part of the present embodiment may be implemented.

[0378] [Explanation of symbols]

[0380] [ 0 0 8 7 ]

[0382] 1 Motorcycles (saddle-type vehicles)

[0384] 1 ○ Hydraulic control unit

[0386] 2 3 1st liquid path (liquid path)

[0388] 2 7 First pump (hydraulic pressure control mechanism, pump)

[0390] 3 3 2nd liquid path (liquid path)

[0392] 3 7 Second pump (hydraulic pressure control mechanism, pump)

[0394] 4. a to 4. 0 d Solenoid valve (hydraulic pressure control mechanism)

[0396] 42a to 42d Coils (components)

[0398] 5 ○ Motor (component)

[0400] 6 〇 Base

[0402] 7 2 Printed circuit board (board)

[0404] 7 3 Control circuit

[0406] 9 1 Onboard power supply

[0408] 9 2 Step-down circuit (first conversion section)

[0410] 9 3 Boost circuit (second conversion section)

[0412] 9 4 Switching element

[0414] 9 5 Switch drive circuit

[0416] 1 0 0 Brake System

[0418] L 1 First power line

[0420] L 2 Second power supply line L 3 Third power supply line

Claims

[Document name] Scope of claims

1. A hydraulic pressure control unit (10) that controls the hydraulic pressure of brake fluid in a brake system (! XXX) of a saddle-ride type vehicle (1), a base (60) in which the brake fluid paths (23, 33) are formed; a hydraulic pressure control mechanism (40a to 40d, 27, 37) that is incorporated into the base body (60) and includes components (42a to 42d, 50) for controlling the hydraulic pressure; a control circuit (73) that controls the operation of the components (42a to 42d, 50); a first power supply line (L1) that electrically connects an on-board power supply (91) mounted on the saddle-ride type vehicle (1) to the control circuit (73); a second power supply line (L2) that electrically connects the on-board power supply (91) and the components (42a to 42d, 50); Equipped with The first power supply line (L1) has a first conversion unit (92) that converts a voltage supplied from the on-board power supply (91) into a first operating voltage that operates the control circuit (73), and supplies the first operating voltage to the control circuit (73); The second power supply line (L2) supplies a voltage higher than the first operating voltage to the components (42a to 42d, 50). Hydraulic control unit.

2. the control circuit (73), the first power supply line (L1), and the second power supply line (L2) are mounted on a common substrate (72); The hydraulic control unit according to claim 1.

3. The control circuit (73) is mounted on a first substrate, the first power supply line (L1) and the second power supply line (L2) are mounted on a second substrate different from the first substrate; The hydraulic control unit according to claim 1.

4. The control circuit (73) is mounted on a first substrate, the first power supply line (L1) is mounted on a second substrate different from the first substrate, and the second power supply line (L2) is mounted on a third substrate different from the first substrate and the second substrate; The hydraulic control unit according to claim 1.

5. the first power supply line (L1) is mounted on a first substrate; The hydraulic control unit according to claim 1, wherein the second power supply line (L2) is mounted on a second board different from the first board.

6. The first conversion unit has a conversion circuit (92) that steps down the power supply voltage of the on-board power supply (91) and converts it into the first operating voltage. A hydraulic control unit according to any one of claims 1 to 5. [Claim?] The second power supply line (L2) supplies the voltage supplied from the on-board power supply (91) to the components (42a to 42d, 50). A hydraulic control unit according to any one of claims 1 to 5.

8. The component is a motor (50) that drives a pump (27, 37) that moves the brake fluid in the fluid path (23, 33). A hydraulic control unit according to any one of claims 1 to 5.

9. The components are coils (42a to 42d) of solenoid valves (40a to 40d) that open and close the brake fluid paths (23, 33). A hydraulic control unit according to any one of claims 1 to 5. [Claim 1〇] The second power supply line (L2) has a switching element (94) that switches the current flow from the on-board power supply (91) to the components (42a to 42d, 50) between a conducting state and a non-conducting state. A hydraulic control unit according to any one of claims 1 to 5. [Claim 1 1] The hydraulic pressure control unit (10) comprises: a switch drive circuit (95) for switching the switching element (94) between a conducting state and a non-conducting state; a third power supply line (L3) electrically connecting the on-board power supply (91) and the switch drive circuit (95); Equipped with The third power supply line (L3) has a second conversion unit (93) that boosts the power supply voltage of the on-board power supply (91) and converts it into a second operating voltage that operates the switch drive circuit (95), and supplies the second operating voltage to the switch drive circuit (95). A hydraulic control unit as described in claim 1. [Claim 1 2] A saddle-ride type vehicle comprising the hydraulic control unit (10) according to any one of claims 1 to 5.

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