Brake force control unit for saddle-type vehicle

Abstract

To secure high speed and stability of control of braking force corresponding to output of a sensor, in a brake force control unit for a saddle-ride type vehicle in which the sensor which is mounted on a printed wiring board, where the sensor measures at least acceleration, angle, or angular velocity occurring in the saddle-ride type vehicle.SOLUTION: In a brake force control unit (60), all electronic components (52) governing operation of a brake force adjusting mechanism is integrally mounted on one printed wiring board 51. A sensor (39) which measures at least acceleration, an angle, or angular velocity occurring in a saddle-ride type vehicle (100) is mounted on the printed wiring board 51.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a braking force control unit for a saddle-ride type vehicle in which sensors for measuring at least the acceleration, angle or angular velocity occurring in the saddle-ride type vehicle are mounted on a printed wiring board. [Background technology]

[0002] A braking force control unit for performing antilock brake operation on a vehicle brake system is known. This braking force control unit controls the operation of a braking force adjustment mechanism to adjust the braking force generated on the wheels when a vehicle occupant is operating a brake operation unit. The braking force control unit includes a printed wiring board on which electronic components for controlling the operation of the braking force adjustment mechanism are mounted. Some printed wiring boards are equipped with sensors for measuring at least acceleration, angle, or angular velocity occurring in the vehicle. In such a case, the electronic components and sensors for controlling the operation of the braking force adjustment mechanism are mounted separately on multiple printed wiring boards. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-29239 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a braking force control unit for a saddle-ride type vehicle, when sensors that measure at least the acceleration, angle or angular velocity occurring in the saddle-ride type vehicle are mounted on a printed wiring board, if the electronic components and sensors for controlling the operation of the braking force adjustment mechanism are mounted separately on multiple printed wiring boards as in conventional braking force control units, despite the fact that the running of a saddle-ride type vehicle is extremely unstable compared to other vehicles (e.g., four-wheeled vehicles, trucks, etc.), faster and more stable communication is essential, for example, insufficient communication quality and speed, poor mechanical connection, insufficient resistance to disturbances, etc. may occur, which may interfere with the control of the braking force according to the output of the sensor.

[0005] The present invention has been made in light of the above-mentioned problems, and has an object to ensure high speed and stability of control of braking force in accordance with the output of a sensor in a brake force control unit for a saddle-type vehicle, the sensor being mounted on a printed wiring board and measuring at least the acceleration, angle or angular velocity occurring in the saddle-type vehicle. [Means for solving the problem]

[0006] The braking force control unit of the present invention is a braking force control unit for a saddle-riding vehicle, and includes a braking force adjustment mechanism for adjusting the braking force generated in the saddle-riding vehicle, and a printed wiring board on which electronic components are mounted, wherein all of the electronic components that control the operation of the braking force adjustment mechanism are concentrated and mounted on a single printed wiring board, and a sensor for measuring at least the acceleration, angle or angular velocity generated in the saddle-riding vehicle is mounted on the printed wiring board. Effect of the Invention

[0007] In the braking force control unit according to the present invention, all electronic components that control the operation of the braking force adjustment mechanism are mounted together on a single printed wiring board, and sensors that measure at least the acceleration, angle or angular velocity occurring in the saddle-type vehicle are mounted on the printed wiring board, thereby making it possible to ensure high speed and stability in the control of the braking force according to the output of the sensor, while suppressing, for example, insufficient communication quality and speed, poor mechanical connection, insufficient resistance to disturbances, etc. [Brief description of the drawings]

[0008] [Figure 1] 1 is a diagram showing a configuration of a vehicle equipped with a brake system according to an embodiment of the present invention. [Diagram 2] 1 is a diagram showing a configuration of a brake system according to an embodiment of the present invention; [Diagram 3] 1 is a partial cross-sectional side view of a braking force control unit according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will now be described with reference to the drawings. In the following, the brake force control unit according to the present invention is applied to a motorcycle, but the brake force control unit according to the present invention may be applied to a saddle-type vehicle other than a motorcycle. A saddle-type vehicle means a vehicle on which a rider straddles and rides, and includes, for example, a bicycle, a three-wheeled motor vehicle, a buggy, and the like. A bicycle means any vehicle that can be propelled on a road by a pedaling force applied to the pedals. In other words, a bicycle includes a normal bicycle, an electrically assisted bicycle, an electric bicycle, and the like. A two-wheeled motor vehicle or a three-wheeled motor vehicle means a so-called motor cycle, and a motor cycle includes a motorcycle, a scooter, an electric scooter, and the like. In the following, a case is described in which a brake system for a saddle-type vehicle includes two hydraulic circuits, but the number of hydraulic circuits in a brake system for a saddle-type vehicle is not limited to two. A brake system for a saddle-type vehicle may include only one hydraulic circuit, or may include three or more hydraulic circuits. Furthermore, a brake system for a saddle-ride type vehicle may not include a hydraulic circuit, and may adjust the braking force generated in the saddle-ride type vehicle without controlling hydraulic pressure.

[0010] Furthermore, the configurations, operations, etc. described below are merely examples, and the braking force control unit according to the present invention is not limited to such configurations, operations, etc. Furthermore, in each drawing, the same or similar members or parts may be given the same reference numerals or may not be given the reference numerals. Furthermore, illustrations of detailed structures are simplified or omitted as appropriate.

[0011] Embodiment A brake system for a saddle-type vehicle according to an embodiment will be described below.

[0012] <Configuration and operation of brake system for saddle-type vehicle> The configuration and operation of the brake system according to the embodiment will be described. Fig. 1 is a diagram showing the configuration of a vehicle equipped with a brake system according to an embodiment of the present invention Fig. 2 is a diagram showing the configuration of the brake system according to an embodiment of the present invention.

[0013] 1 and 2, a brake system 10 is mounted on a saddle-type vehicle 100 such as a motorcycle. The saddle-type vehicle 100 includes a body 1, a handlebar 2 rotatably held by the body 1, a front wheel 3 rotatably held together with the handlebar 2 by the body 1, and a rear wheel 4 rotatably held by the body 1.

[0014] The brake 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 handlebar 2 and is operated by the user's hand. The first hydraulic circuit 12 generates a braking force on a rotor 3a that rotates together with the front wheel 3 according to the amount of operation of the brake lever 11. The brake pedal 13 is provided on the lower part of the body 1 and is operated by the user's foot. The second hydraulic circuit 14 generates a braking force on a rotor 4a that rotates together with the rear wheel 4 according to the amount of operation of the brake pedal 13.

[0015] For example, the first hydraulic pressure circuit 12 and the second hydraulic pressure circuit 14 have the same configuration. Therefore, in the following, the configuration of the first hydraulic pressure circuit 12 will be described as a representative.

[0016] The first hydraulic circuit 12 includes a master cylinder 21 incorporating a piston (not shown), a reservoir 22 attached to the master cylinder 21, a brake caliper 23 held by the body 1 and having brake pads (not shown), and a wheel cylinder 24 that operates the brake pads (not shown) of the brake caliper 23.

[0017] In the first hydraulic circuit 12, the master cylinder 21 and the wheel cylinder 24 communicate with each other through a fluid pipe connected between the master cylinder 21 and a master cylinder port MP formed in the base 61, a main flow passage 25 formed in the base 61, and a fluid pipe connected between the wheel cylinder 24 and a wheel cylinder port WP formed in the base 61. A sub-flow passage 26 is formed in the base 61. The brake fluid in the wheel cylinder 24 is released through the sub-flow passage 26 to a main flow passage intermediate portion 25a which is an intermediate portion of the main flow passage 25. A booster flow passage 27 is formed in the base 61. The brake fluid in the master cylinder 21 is supplied to a sub-flow passage intermediate portion 26a which is an intermediate portion of the sub-flow passage 26 through the booster flow passage 27.

[0018] An inlet valve 28 is provided in a region of the main flow path 25 closer to the wheel cylinder 24 than the main flow path intermediate portion 25a. An outlet valve 29 and an accumulator 30 for storing brake fluid are provided in a region of the secondary flow path 26 upstream of the secondary flow path intermediate portion 26a, in that order from the upstream side. A pump 31 is provided in a region of the secondary flow path 26 downstream of the secondary flow path intermediate portion 26a. A switching valve 32 is provided in a region of the main flow path 25 closer to the master cylinder 21 than the main flow path intermediate portion 25a. A booster valve 33 is provided in the booster flow path 27. In the following description, the inlet valve 28, the outlet valve 29, the switching valve 32, and the booster valve 33 will be referred to as a pressure regulating valve 36 when they are not distinguished from one another.

[0019] A master cylinder pressure sensor 34 for detecting the pressure of the brake fluid in the master cylinder 21 is provided in a region of the main flow path 25 closer to the master cylinder 21 than the switching valve 32. A wheel cylinder pressure sensor 35 for detecting the pressure of the brake fluid in the wheel cylinder 24 is provided in a region of the main flow path 25 closer to the wheel cylinder 24 than the inlet valve 28.

[0020] In other words, the main flow path 25 communicates the master cylinder port MP and the wheel cylinder port WP via the inlet valve 28. The secondary flow path 26 is defined as a part or all of the flow path that releases the brake fluid in the wheel cylinder 24 to the master cylinder 21 via the outlet valve 29. The booster flow path 27 is defined as a part or all of the flow path that supplies the brake fluid in the master cylinder 21 to the upstream side of the pump 31 of the secondary flow path 26 via a booster valve 33.

[0021] The inlet valve 28 is an electromagnetic valve that switches the flow of brake fluid from open to closed at its installation location when it is switched from a non-energized state to an energized state. The outlet valve 29 is an electromagnetic valve that switches the flow of brake fluid from closed to open through its installation location toward the secondary flow path intermediate portion 26a when it is switched from a non-energized state to an energized state. The switching valve 32 is an electromagnetic valve that switches the flow of brake fluid from open to closed at its installation location when it is switched from a non-energized state to an energized state. The booster valve 33 is an electromagnetic valve that switches the flow of brake fluid from closed to open through its installation location toward the secondary flow path intermediate portion 26a when it is switched from a non-energized state to an energized state.

[0022] The pump 31 of the first hydraulic pressure circuit 12 and the pump 31 of the second hydraulic pressure circuit 14 are driven by a common motor 38. The motor 38 corresponds to the "braking force adjustment mechanism" and the "pressure adjustment mechanism" of the present invention.

[0023] A braking force control unit 60 is constituted by a base 61, each component provided on the base 61 (inlet valve 28, outlet valve 29, accumulator 30, pump 31, switching valve 32, booster valve 33, master cylinder fluid pressure sensor 34, wheel cylinder fluid pressure sensor 35, motor 38, etc.), sensor 39, a printed wiring board 51 of the control device (ECU) 50 (described later), etc.

[0024] The sensor 39 measures at least the acceleration, angle, or angular velocity occurring in the saddle riding type vehicle 100. The sensor 39 is preferably an inertial measurement sensor that measures three-axis angles or angular velocities and three-axis acceleration. All of the three-axis angles or angular velocities and three-axis acceleration may be detected, or only a portion of the three-axis angles or angular velocities and three-axis acceleration may be detected, and the remaining undetected physical quantities may be obtained by calculation. The sensor 39 may also measure other physical quantities that can be substantially converted into acceleration, angle, or angular velocity.

[0025] The control device 50 may be one or multiple. A part of the control device 50 may be, for example, a microcomputer, a microprocessor unit, or the like, or may be an updatable component such as firmware, or may be a program module executed by commands from a CPU or the like. In the braking force control unit 60, at least a part of the control device 50 is configured with a printed wiring board 51, which will be described later.

[0026] For example, in a normal state, the control device 50 controls the inlet valve 28, the outlet valve 29, the switching valve 32, and the booster valve 33 to be in a non-energized state. When the brake lever 11 is operated in this state, in the first hydraulic circuit 12, the piston (not shown) of the master cylinder 21 is pushed in, increasing the hydraulic pressure of the brake fluid in the wheel cylinder 24, and the brake pad (not shown) of the brake caliper 23 is pressed against the rotor 3a of the front wheel 3, thereby braking the front wheel 3. When the brake pedal 13 is operated, in the second hydraulic circuit 14, the piston (not shown) of the master cylinder 21 is pushed in, increasing the hydraulic pressure of the brake fluid in the wheel cylinder 24, and the brake pad (not shown) of the brake caliper 23 is pressed against the rotor 4a of the rear wheel 4, thereby braking the rear wheel 4.

[0027] The outputs of the various sensors (master cylinder hydraulic pressure sensor 34, wheel cylinder hydraulic pressure sensor 35, wheel speed sensor, sensor 39, etc.) are input to the control device 50. In response to the outputs, the control device 50 outputs commands that control the operation of a coil 37, a motor 38, etc., which will be described later, that are attached to the pressure regulating valve 36, thereby performing at least an antilock brake operation.

[0028] For example, when the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic pressure circuit 12 is excessive or there is a possibility that the hydraulic pressure of the brake fluid is excessive, the control device 50 executes an operation to reduce the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic pressure circuit 12. In this case, the control device 50 drives the motor 38 while controlling the inlet valve 28 to an energized state, the outlet valve 29 to an energized state, the switching valve 32 to a non-energized state, and the booster valve 33 to a non-energized state in the first hydraulic pressure circuit 12. In addition, the control device 50 executes an operation to reduce the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic pressure circuit 14 when the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic pressure circuit 14 is excessive or there is a possibility that the hydraulic pressure of the brake fluid is excessive. At that time, the control device 50 drives the motor 38 while controlling the second hydraulic circuit 14 so as to control the inlet valve 28 to an energized state, the outlet valve 29 to an energized state, the switching valve 32 to a non-energized state, and the boost valve 33 to a non-energized state.

[0029] Also, for example, when the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic pressure circuit 12 is insufficient or there is a possibility of insufficient, the control device 50 executes an operation to increase the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the first hydraulic pressure circuit 12. At that time, the control device 50 drives the motor 38 while controlling the inlet valve 28 to a non-energized state, the outlet valve 29 to a non-energized state, the switching valve 32 to an energized state, and the booster valve 33 to an energized state in the first hydraulic pressure circuit 12. Also, when the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic pressure circuit 14 is insufficient or there is a possibility of insufficient, the control device 50 executes an operation to increase the hydraulic pressure of the brake fluid in the wheel cylinder 24 of the second hydraulic pressure circuit 14. At that time, the control device 50 drives the motor 38 while controlling the inlet valve 28 to a non-energized state, the outlet valve 29 to a non-energized state, the switching valve 32 to an energized state, and the boost valve 33 to an energized state in the second hydraulic circuit 14.

[0030] The control device 50 also outputs a control signal based on the output of the sensor 39 to, for example, the braking force control unit 60, a control unit (not shown) that controls the propulsive force of the saddle riding type vehicle 100, or the like, to control the behavior of the saddle riding type vehicle 100. The control device 50 may output, in response to the output of the sensor 39, a control signal that causes the braking force control unit 60 to generate a braking force corresponding to the acceleration in the travel direction or the acceleration in the vehicle width direction occurring in the saddle riding type vehicle 100 while traveling, or may output a control signal that causes the braking force control unit 60 to generate a braking force corresponding to the roll angle or roll angular velocity occurring in the saddle riding type vehicle 100 while traveling, or may output a control signal that causes the braking force control unit 60 to generate a braking force corresponding to the pitch angle or pitch angular velocity occurring in the saddle riding type vehicle 100 while traveling. The control device 50 may also output, in response to the output of the sensor 39, a control signal that causes the braking force control unit 60 to generate a braking force corresponding to the gradient of the road surface on which the saddle riding type vehicle 100 stops, for example.

[0031] <Structure of the Brake Force Control Unit> The configuration of the braking force control unit of the brake system according to the embodiment will be described. FIG. 3 is a partial cross-sectional side view of the braking force control unit according to the embodiment of the present invention.

[0032] The base 61 is made of a metal such as aluminum and has a substantially rectangular parallelepiped shape, for example. Each surface of the base 61 may include a stepped portion, or may include a curved portion.

[0033] 3, a motor 38 is attached to a base body 61. An eccentric body 42 that rotates together with the output shaft 41 of the motor 38 is attached to the output shaft 41 of the motor 38. When the eccentric body 42 rotates, the plunger of the pump 31 that is pressed against the outer circumferential surface of the eccentric body 42 reciprocates, thereby transporting brake fluid from the suction side to the discharge side of the pump 31.

[0034] Further, the housing 70 is attached to the base 61. The housing 70 is formed of, for example, resin, and has, for example, a substantially rectangular parallelepiped shape. The housing 70 is attached to the base 61 with an opening closed by the base 61, and houses the motor 38 inside. The motor 38 has a terminal 43 at an end opposite to the side where the output shaft 41 is provided. The terminal 43 penetrates the bottom surface of the housing 70 and is electrically connected to a pin 76 erected on the housing 70, and is electrically connected to a printed wiring board 51 arranged outside the housing 70 via the pin 76. Note that the member to which the motor 38 is attached is not limited to the base 61. For example, the motor 38 may be attached to the housing 70.

[0035] A through hole 71 into which the fixing member 90 is inserted is formed in the bottom surface of the housing 70. The fixing member 90 may be, for example, a bolt that is coupled to a female screw formed in the base 61, or a pin that is press-fitted into a hole formed in the base 61. The fixing member 90 is attached in a state in which one end is inserted into the through hole 71 and coupled to the base 61, and the other end protrudes outside the housing 70, that is, between the housing 70 and the printed wiring board 51. A bulge 91 having a diameter larger than that of the through hole 71 is formed in the other end, and the bulge 91 presses the bottom surface of the housing 70 directly or indirectly via a washer or the like toward the base 61, thereby fixing the housing 70 to the base 61. The opening of the housing 70 and the base 61 may be bonded to each other.

[0036] Further, a coil 37 for driving the pressure regulating valve 36 is attached to the base 61 for each pressure regulating valve 36. The pressure regulating valve 36 includes a valve body (not shown) for opening and closing a flow path formed in the base 61, and a plunger (not shown) that reciprocates in conjunction with the valve body. The coil 37 is attached to the base 61 in a state where an opening into which the plunger is inserted faces the base 61, that is, in an upright state. When a magnetic force is generated by energizing the coil 37, the plunger moves up and down in the state shown in FIG. 3, and the flow path is opened and closed by the accompanying movement of the valve body. The coil 37 corresponds to the "braking force adjustment mechanism" and the "pressure adjustment mechanism" in this invention.

[0037] The coil 37 is housed in a housing 70. A protrusion 72 is formed on the inner surface of the housing 70. When the housing 70 is fixed to the base 61 by the fixing member 90, the protrusion 72 presses the top of the coil 37 toward the base 61, thereby fixing the coil 37 to the base 61. The base 61 and the coil 37 may be bonded together. A pin 76 is provided on the end of the coil 37 farther from the base 61. The pin 76 penetrates the bottom surface of the housing 70 and is electrically connected to the printed wiring board 51 arranged outside the housing 70.

[0038] The printed wiring board 51 includes metal wiring made of copper or the like on its surface, and electronic components 52 mounted on the surface so as to be electrically connected to the metal wiring. An electronic circuit is formed by the metal wiring, electronic components 52, etc. All electronic components 52 that control the operation of the coil 37 and the motor 38 are mounted together on one printed wiring board 51. In addition, a sensor 39 is mounted on the printed wiring board 51. An output signal of the sensor 39 is received by the electronic components 52 by serial communication. It is preferable that no other printed wiring boards are provided other than the printed wiring board 51 on which the sensor 39 is mounted.

[0039] A through hole 53 is formed in the printed wiring board 51. A tip of a pin 76 protruding outside the housing 70 is inserted into the through hole 53. This electrically connects the coil 37 and the motor 38 to the electronic circuit of the printed wiring board 51. This insertion also causes the printed wiring board 51 to be held by the pin 76, and the printed wiring board 51 is fixed. Note that a pin 76 that does not function as an electrically conductive part may be further provided upright on the housing 70, and insertion of the pin 76 into the through hole 53 may assist in fixing the printed wiring board 51. In the braking force control unit 60, movement of the printed wiring board 51 in a direction away from the housing 70 is restricted only by engagement of the pin 76 with the printed wiring board 51.

[0040] A printed wiring board cover 80 that covers the printed wiring board 51 is attached to the outside of the housing 70. The printed wiring board cover 80 is fixed to the housing 70 in a state in which the opening is closed by the bottom surface of the housing 70. The fixing may be by mechanical engagement or by adhesion.

[0041] <Effects of the Brake Force Control Unit> The effects of the braking force control unit of the brake system according to the embodiment will be described.

[0042] The braking force control unit 60 includes a braking force adjustment mechanism (e.g., coil 37, motor 38, etc.) for adjusting the braking force generated in the saddle riding type vehicle 100, and a printed wiring board 51 on which electronic components 52 are mounted. All of the electronic components 52 that control the operation of the braking force adjustment mechanism are mounted together on a single printed wiring board 51, and a sensor 39 that measures at least the acceleration, angle or angular velocity generated in the saddle riding type vehicle 100 is mounted on the printed wiring board 51. This makes it possible to ensure high speed and stability of the control of the braking force according to the output of the sensor 39, by suppressing, for example, insufficient communication quality and speed, mechanical connection failure, insufficient resistance to disturbances, etc.

[0043] Preferably, the output signal of the sensor 39 is received by the electronic component 52 via serial communication. Such a configuration ensures stability.

[0044] Preferably, the braking force control unit 60 is not provided with any printed wiring board other than the printed wiring board 51 on which the sensor 39 is mounted. Such a configuration significantly improves the ease of mounting the braking force control unit 60 on the saddle-ride type vehicle 100, cost efficiency, ease of assembly, etc.

[0045] Preferably, the braking force control unit 60 includes a base 61 in which a flow path for the brake fluid is formed, and the braking force adjustment mechanism is a brake fluid pressure adjustment mechanism (e.g., the coil 37, the motor 38, etc.) provided on the base 61. High speed communication is particularly required in a configuration in which the braking force generated in the saddle riding type vehicle 100 is adjusted by controlling the hydraulic pressure. In other words, the above-mentioned configuration is particularly useful in such a braking force control unit 60.

[0046] Preferably, the braking force control unit 60 includes a housing 70 that accommodates a braking force adjustment mechanism (e.g., the coil 37, the motor 38, etc.). The braking force adjustment mechanism is electrically connected to the electronic components 52 of the printed wiring board 51 on which the sensor 39 is mounted, via at least a part of a plurality of pins 76 protruding outside the housing 70. The movement of the printed wiring board 51 on which the sensor 39 is mounted in a direction away from the housing 70 is restricted only by the plurality of pins 76. By adopting a configuration in which the movement of the printed wiring board 51 in a direction away from the housing 70 is restricted only by the plurality of pins 76, it is possible to improve the assembly of the braking force control unit 60. In addition, in such a configuration, there is a concern about resistance to disturbances. In other words, the above-mentioned configuration is particularly useful in such a braking force control unit 60.

[0047] Although the braking force control unit according to the embodiment has been described above, the braking force control unit according to the present invention is not limited to the description of the embodiment. For example, only a part of the embodiment may be implemented.

[0048] For example, although the above describes a case where the coil 37 and the motor 38 are housed in the housing 70, the housing 70 may house only one of the coil 37 and the motor 38, or may house another pressure regulating mechanism.

[0049] For example, while FIG. 3 illustrates a case in which sensor 39 is mounted on the opposite side of housing 70 relative to printed wiring board 51, sensor 39 may also be mounted on the same side of housing 70 relative to printed wiring board 51. [Explanation of symbols]

[0050] 10 brake system, 12 first hydraulic circuit, 14 second hydraulic circuit, 31 pump, 36 pressure regulating valve, 37 coil, 38 motor, 39 sensor, 50 control device, 51 printed wiring board, 52 electronic component, 53 through hole, 60 brake force control unit, 61 base, 70 housing, 71 through hole, 72 protrusion, 76 pin, 80 printed wiring board cover, 90 fixing member, 91 bulge, 100 saddle-type vehicle.

Claims

1. A braking force control unit (60) for a saddle-type vehicle (100), comprising: a braking force adjustment mechanism (37, 38) for adjusting a braking force generated in the saddle riding type vehicle (100); A base (61) in which a flow path for brake fluid is formed; A printed wiring board (51) on which electronic components (52) are mounted; It is equipped with The braking force adjustment mechanism is a pressure adjustment mechanism (37, 38) of the brake fluid provided on the base body (61), all of the electronic components (52) controlling the operation of the braking force adjustment mechanism (37, 38) are collectively mounted on one of the printed wiring boards (51), and a sensor (39) for measuring at least an acceleration, an angle or an angular velocity occurring in the saddle riding type vehicle (100) is mounted on the printed wiring board (51); The output signal of the sensor (39) is received by the electronic component (52) via serial communication. Brake force control unit.

2. No other printed wiring board is provided other than the printed wiring board (51) on which the sensor (39) is mounted.

2. A braking force control unit according to claim 1.

3. The pressure regulating mechanism (37, 38) includes a motor (38) that drives a pump (31) provided in the flow path.

2. A braking force control unit according to claim 1.

4. The pressure regulating mechanism (37, 38) includes a coil (37) that drives a pressure regulating valve (36) that opens and closes the flow path. A braking force control unit according to any one of claims 1 to 3.

5. The brake force adjusting mechanism further includes a housing (70) for accommodating the brake force adjusting mechanism (37, 38). the braking force adjustment mechanism (37, 38) is electrically connected to the electronic component (52) of the printed wiring board (51) on which the sensor (39) is mounted via at least a portion of a plurality of pins (76) protruding outside the housing (70); The movement of the printed wiring board (51) on which the sensor (39) is mounted in a direction away from the housing (70) is restricted only by the plurality of pins (76). A braking force control unit according to any one of claims 1 to 4.

6. The sensor (39) is an inertial measurement sensor. A braking force control unit according to any one of claims 1 to 5.

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