Brake hydraulic control unit, brake system for motorcycle, and motorcycle

Abstract

The present application obtains a brake hydraulic control unit (50) capable of improving the mountability of a brake system (1) to a motorcycle (100). Furthermore, a motorcycle (100) and a brake system (1) for the motorcycle (100) provided with such a brake hydraulic control unit (50) are obtained. A brake hydraulic control unit (50) of a brake system (1) for a motorcycle (100), an inlet valve (21), a release valve (22), and a pump (24) of a hydraulic circuit (2, 3) as one of a pressure-boosting type hydraulic circuit and a first valve (26) and a second valve (27) of the pressure-boosting type hydraulic circuit (3) are separately provided on a main base body (31) and a sub base body (36), and the main base body (31) and the sub base body (36) are separated from each other.

Description

Technical Field

[0001] This invention relates to a brake hydraulic control unit for a motorcycle braking system, a motorcycle braking system having the brake hydraulic control unit, and a motorcycle having the motorcycle braking system. Background Technology

[0002] Conventional motorcycles (motorized two-wheelers or motorized three-wheelers) include a braking system comprising a first hydraulic circuit acting on the front wheel and a second hydraulic circuit acting on the rear wheel. The first and second hydraulic circuits each include a main flow path connecting the master cylinder and the wheel cylinder, and a secondary flow path that, driven by a pump, discharges brake fluid from the wheel cylinder into the middle of the main flow path. Furthermore, at least one of the first and second hydraulic circuits is a booster-type hydraulic circuit capable of pressurizing the brake fluid in the wheel cylinder by a pump, including a supply flow path that supplies brake fluid from the master cylinder to the pump's suction side.

[0003] A brake hydraulic control unit is constituted by an inlet valve provided in the main flow path of the first hydraulic circuit and the main flow path of the second hydraulic circuit, a release valve provided in the secondary flow path of the first hydraulic flow path and the secondary flow path of the second hydraulic flow path, a first valve provided in the middle section of the main flow path of the hydraulic circuit which is a booster type hydraulic circuit, a second valve provided in the supply flow path, and a base provided thereon (for example, see Patent Document 1).

[0004] Patent document 1: Japanese Patent Application Publication No. 2007-276563.

[0005] In the aforementioned brake hydraulic control unit, the inlet valves and release valves of the first and second hydraulic circuits, as well as the first and second valves of the hydraulic circuit serving as a booster-type hydraulic circuit, are mounted on a single base. Unlike other vehicles, motorcycles, in particular, face stricter constraints regarding mounting space. Furthermore, the addition of structures to realize the booster-type hydraulic circuit results in a larger base. Under these circumstances, a large space needs to be ensured on the motorcycle's main body side in order to mount the base. Therefore, the aforementioned brake hydraulic control unit suffers from a low degree of susceptibility to mounting the brake system onto the motorcycle. Summary of the Invention

[0006] This invention was made against the backdrop of the aforementioned problems, and provides a brake hydraulic control unit that improves the adaptability of a braking system to a motorcycle. Furthermore, a brake system for a motorcycle equipped with such a brake hydraulic control unit is provided. Additionally, a motorcycle equipped with such a brake system for a motorcycle is also provided.

[0007] The brake hydraulic control unit of the present invention is a brake hydraulic control unit for a motorcycle brake system. The brake system includes: a first hydraulic circuit acting on the front wheel of the motorcycle; and a second hydraulic circuit acting on the rear wheel of the motorcycle. The first and second hydraulic circuits each include: a main flow path connecting the master cylinder and the wheel cylinder; and a secondary flow path, driven by a pump, discharging brake fluid from the wheel cylinder to the middle section of the main flow path. One of the first and second hydraulic circuits is a booster-type hydraulic circuit capable of pressurizing the brake fluid in the wheel cylinder by the drive of the pump. The aforementioned master cylinder brake fluid is supplied to the suction side of the aforementioned pump in the aforementioned auxiliary flow path; the aforementioned brake hydraulic control unit includes: an inlet valve disposed in the aforementioned main flow path; a release valve disposed in the aforementioned auxiliary flow path; a first valve disposed in the aforementioned master cylinder side of the aforementioned intermediate portion of the aforementioned main flow path of the aforementioned hydraulic circuit; and a second valve disposed in the aforementioned supply flow path of the aforementioned hydraulic circuit; the aforementioned inlet valve, the aforementioned release valve, and the aforementioned pump of the aforementioned hydraulic circuit, and the aforementioned first valve and the aforementioned second valve of the aforementioned hydraulic circuit are separately disposed on the main body and the auxiliary body; the aforementioned main body and the aforementioned auxiliary body are separated from each other.

[0008] Furthermore, the braking system for motorcycles according to the present invention includes the aforementioned brake hydraulic control unit.

[0009] Furthermore, the motorcycle of the present invention is equipped with the aforementioned braking system for motorcycles.

[0010] In the brake hydraulic control unit of the present invention, the inlet valve and release valve of the hydraulic circuit, which is a booster-type hydraulic circuit, and the first valve and second valve of the hydraulic circuit are separately arranged on separate main and sub-bases. When all components are concentrated on a single base, many flow paths need to be formed on that base in a complex manner. Furthermore, a large external area is required to accommodate many components, thus limiting the miniaturization of the brake hydraulic control unit. In contrast, by separately arranging each component on separate main and sub-bases, each base can be miniaturized with fewer constraints on the flow path and external area, thus enabling a more compact brake hydraulic control unit. Therefore, the necessity of ensuring a large space in a motorcycle is reduced, improving the motorcycle-compatible design of the braking system. Furthermore, the main base can be used for bases in cases where neither the first nor the second hydraulic circuit is a booster-type hydraulic circuit, reducing manufacturing costs, etc. Attached Figure Description

[0011] Figure 1 This is a diagram showing the system structure of a braking system according to an embodiment of the present invention.

[0012] Figure 2 This is a schematic diagram of the main body of a braking system and the components disposed thereon, according to an embodiment of the present invention.

[0013] Figure 3 This is a schematic diagram showing the sub-base of a braking system according to an embodiment of the present invention and the components disposed thereon.

[0014] Figure 4 This is a diagram showing the brake hydraulic control unit of the braking system according to an embodiment of the present invention mounted on a motorcycle.

[0015] Figure 5 This is a diagram showing a modified example of the braking system according to an embodiment of the present invention. Detailed Implementation

[0016] The following description uses the accompanying drawings to illustrate the brake hydraulic control unit, brake system, and motorcycle of the present invention.

[0017] Furthermore, the structures and operations described below are merely examples, and the brake hydraulic control unit, brake system, and motorcycle of the present invention are not limited to such structures and operations. Additionally, in the various figures, the same reference numerals are sometimes used for the same or similar parts. Furthermore, detailed construction details have been appropriately simplified or omitted from the drawings.

[0018] Implementation

[0019] The following describes the braking system according to an embodiment.

[0020] <Structure and Operation of Braking Systems>

[0021] The structure and operation of the braking system according to the relevant implementation method are described.

[0022] Figure 1 This is a diagram showing the system structure of a braking system according to an embodiment of the present invention.

[0023] like Figure 1 As shown, the braking system 1 is mounted on a motorcycle 100 (a motorized two-wheeler or a motorized three-wheeler), including a first hydraulic circuit 2 that acts on the front wheel 101 of the motorcycle 100 and a second hydraulic circuit 3 that acts on the rear wheel 102 of the motorcycle 100. Brake fluid is filled in the first hydraulic circuit 2 and the second hydraulic circuit 3.

[0024] In the master cylinder 11 of the first hydraulic circuit 2, a piston (not shown) is built in which it reciprocates in conjunction with the handlebar 4. A reservoir 12 is attached to the master cylinder 11. The wheel cylinder 13 of the first hydraulic circuit 2 is mounted on the front brake caliper 5. If the brake fluid pressure in the wheel cylinder 13 increases, the brake pad of the front brake caliper 5 (not shown) is pushed against the front rotor 6, which rotates together with the front wheel 101, and the front wheel 101 is braked.

[0025] In the master cylinder 11 of the second hydraulic circuit 3, a piston (not shown) is built in which it reciprocates in conjunction with the foot pedal 7. A reservoir 12 is attached to the master cylinder 11. The wheel cylinder 13 of the second hydraulic circuit 3 is mounted on the rear brake caliper 8. If the brake fluid pressure in the wheel cylinder 13 increases, the brake pad of the rear brake caliper 8 (not shown) is pushed against the rear rotor 9, which rotates together with the rear wheel 102, and the rear wheel 102 is braked.

[0026] The first hydraulic circuit 2 and the second hydraulic circuit 3 each include a main flow path 14 and a secondary flow path 15. The main flow path 14 connects the master cylinder 11 and the wheel cylinder 13. An inlet valve 21 is provided in the main flow path 14. The secondary flow path 15 connects the wheel cylinder 13 side of the inlet valve 21 of the main flow path 14 to the master cylinder 11 side via a release valve 22. The inlet valve 21 is, for example, a solenoid valve that opens when not energized and closes when energized. The release valve 22 is, for example, a solenoid valve that closes when not energized and opens when energized. Downstream of the release valve 22 in the secondary flow path 15, an accumulator 23 and a pump 24 are provided in sequence. The pump 24 is driven by a motor 25. When the pump 24 is driven, the brake fluid in the wheel cylinder 13 is discharged to the middle section 14a of the main flow path 14 via the secondary flow path 15.

[0027] Of the first hydraulic circuit 2 and the second hydraulic circuit 3, only the second hydraulic circuit 3 is a booster-type hydraulic circuit capable of boosting the brake fluid in the wheel cylinder 13 by means of the pump 24. The second hydraulic circuit 3 includes a supply flow path 16 that supplies brake fluid from the master cylinder 11 to the suction side of the pump 24 in the auxiliary flow path 15. A first valve 26 is provided on the master cylinder 11 side at the intermediate section 14a of the main flow path 14 of the second hydraulic circuit 3. A second valve 27 is provided in the supply flow path 16 of the second hydraulic circuit 3. The first valve 26 is, for example, a solenoid valve that is open in the non-energized state and closed in the energized state. The second valve 27 is, for example, a solenoid valve that is closed in the non-energized state and open in the energized state. The second hydraulic circuit 3 corresponds to "one hydraulic circuit" in this invention, and the first hydraulic circuit 2 corresponds to "the other hydraulic circuit" in this invention.

[0028] The inlet valve 21, release valve 22, accumulator 23, pump 24, and motor 25 of the first hydraulic circuit 2 and the second hydraulic circuit 3 are mounted on a main body 31. The main body 31 internally forms a partial flow path 31a, which constitutes part of the main flow path 14 of the first hydraulic circuit 2 and the second hydraulic circuit 3, and a partial flow path 31b, which constitutes part of the secondary flow path 15 of the first hydraulic circuit 2 and the second hydraulic circuit 3. Furthermore, the first valve 26 and the second valve 27 of the second hydraulic circuit 3 are mounted on a secondary body 36. The secondary body 36 internally forms a partial flow path 36a, which constitutes part of the main flow path 14 of the second hydraulic circuit 3, and a partial flow path 36b, which constitutes part of the supply flow path 16 of the second hydraulic circuit 3.

[0029] Port P11 of the partial flow path 31a, which constitutes part of the main flow path 14 of the second hydraulic circuit 3, formed on the main body 31, and port P21 of the partial flow path 36a, which constitutes part of the main flow path 14 of the second hydraulic circuit 3, formed on the sub-body 36, are directly connected, i.e., without via brake fluid lines. The portion of the partial flow path 31a, which constitutes part of the main flow path 14 of the second hydraulic circuit 3, formed on the main body 31, corresponds to the "first partial flow path" in this invention. The portion of the partial flow path 36a, which constitutes part of the main flow path 14 of the second hydraulic circuit 3, formed on the sub-body 36, corresponds to the "second partial flow path" in this invention.

[0030] On the main substrate 31, a partial flow path 31c constituting a part of the supply flow path 16 of the second hydraulic circuit 3 is formed. Port P12 of this partial flow path 31c is directly connected to port P22 of the partial flow path 36b constituting a part of the supply flow path 16 of the second hydraulic circuit 3, which is also formed on the sub-substrate 36, without passing through a brake fluid pipe. A portion of the partial flow path 31c constituting a part of the supply flow path 16 of the second hydraulic circuit 3 formed on the main substrate 31 corresponds to the "third partial flow path" in this invention. A portion of the partial flow path 36b constituting a part of the supply flow path 16 of the second hydraulic circuit 3 formed on the sub-substrate 36 corresponds to the "fourth partial flow path" in this invention.

[0031] A brake fluid pipe 41 from the master cylinder 11 is connected to port P13 of the main flow path 14 of the first hydraulic circuit 2, which is formed on the main body 31, and a brake fluid pipe 42 from the wheel cylinder 13 is connected to port P14 of the main flow path 31a. A brake fluid pipe 41 from the master cylinder 11 is connected to port P23 of the main flow path 14 of the second hydraulic circuit 3, which is formed on the sub-base 36, and a brake fluid pipe 41 from the wheel cylinder 13 is connected to port P15 of the main flow path 14 of the second hydraulic circuit 3, which is formed on the main body 31. A midway portion 14a at the downstream end of the connecting sub-flow path 15 of the main flow paths 14 of the first hydraulic circuit 2 and the second hydraulic circuit 3 is formed on the main body 31.

[0032] In the first hydraulic circuit 2, a master cylinder hydraulic sensor 28 is provided to detect the pressure of the brake fluid in the master cylinder 11. Furthermore, in both the first hydraulic circuit 2 and the second hydraulic circuit 3, wheel cylinder hydraulic sensors 29 are provided to detect the pressure of the brake fluid in the wheel cylinders 13. The wheel cylinder hydraulic sensor 29 is mounted on the main base 31, and the master cylinder hydraulic sensor 28 is mounted on the auxiliary base 36.

[0033] The port P16 of the main flow path 14 of the first hydraulic circuit 2 formed on the main body 31 is directly connected to the port P24 of the main flow path 36c of the first hydraulic circuit 2 formed on the secondary body 36, without passing through the brake fluid pipe.

[0034] The brake hydraulic control unit 50 consists of at least a main body 31, a secondary body 36, various components mounted on them, and a control device 60. In the brake hydraulic control unit 50, the pressure of the brake fluid in the wheel cylinder 13 is controlled by the control device 60 through the operation of the inlet valve 21, the release valve 22, the first valve 26, and the second valve 27, as well as the operation of the motor 25.

[0035] The control device 60 can be a single controller or multiple controllers. For example, the control device 60 can be divided into a controller that controls components mounted on the main base 31 and a controller that controls components mounted on the sub-base 36. Furthermore, all or part of the control device 60 can be mounted on the main base 31, sub-base 36, etc., or it can be mounted on other components. Moreover, all or part of the control device 60 can be composed of, for example, a microcomputer, a microprocessor unit, or an updatable unit such as firmware, or a program module executed by instructions from a CPU, etc.

[0036] The control device 60 performs, for example, the following hydraulic control actions.

[0037] In the normal state, i.e., when the inlet valve 21, release valve 22, first valve 26 and second valve 27 are not energized, when the handlebars 4 or foot pedals 7 of the motorcycle 100 are operated, if the possibility of locking or locking of the wheels (front wheel 101, rear wheel 102) of the motorcycle 100 is detected, the control device 60 initiates anti-lock braking control of the wheel.

[0038] If anti-lock braking control is initiated, the control device 60 cuts off the main flow path 14 by energizing the inlet valve 21, restricting the flow of brake fluid from the master cylinder 11 to the wheel cylinders 13. Furthermore, the control device 60 opens the auxiliary flow path 15 by energizing the release valve 22, allowing the flow of brake fluid from the wheel cylinders 13 to the accumulator 23. Additionally, the control device 60 drives the motor 25 to allow the brake fluid stored in the accumulator 23 to return to the main flow path 14.

[0039] If the release or avoidance of wheel lock-up of motorcycle 100 (front wheel 101, rear wheel 102) is detected, the control device 60 terminates the anti-lock brake control by de-energizing the inlet valve 21 and release valve 22 and stopping the drive of pump 24.

[0040] Furthermore, when only the handlebars 4 of the motorcycle 100 are operated, if it is determined that the rear wheel 102 also needs to be braked in addition to the front wheel 101, the control device 60 energizes the first valve 26 and the second valve 27 of the second hydraulic circuit 3, opening the supply flow path 16 of the second hydraulic circuit 3, thereby enabling the flow of brake fluid between the master cylinder 11 and the suction side of the pump 24 in the second hydraulic circuit 3. In addition, the control device 60 increases the pressure of the brake fluid in the wheel cylinder 13 of the second hydraulic circuit 3 by driving the motor 25. At this time, the control device 60 optimizes the operating parameters of the motor 25 based on the detection signals from the master cylinder hydraulic sensor 28 of the first hydraulic circuit 2, the wheel cylinder hydraulic sensor 29 of the second hydraulic circuit 3, etc., thereby optimizing the braking force of the rear wheel 102.

[0041] <Assembly status of components of the brake hydraulic control unit>

[0042] The assembly state of each component of the brake hydraulic control unit of the brake system in the relevant implementation method is described.

[0043] Figure 2 This is a schematic diagram of the main body of a braking system and the components disposed thereon, according to an embodiment of the present invention. Figure 3 This is a schematic diagram of a brake system sub-base and components disposed thereon, according to an embodiment of the present invention.

[0044] like Figure 2As shown, the main body 31 is a generally rectangular aluminum block, etc. Ports P11, P12, P13, P14, P15, and P16 are preferably formed on the same surface (surface A) of the main body 31. The inlet valve 21, release valve 22, and wheel cylinder hydraulic sensor 29 of the first hydraulic circuit 2 and the second hydraulic circuit 3 are mounted on the surface of the main body 31 on which the main body housing 32 is mounted, and are covered by the main body housing 32.

[0045] like Figure 3 As shown, the sub-base 36 is a generally rectangular aluminum block, etc. Ports P21, P22, and P24 are preferably formed on the same side (side B) of the sub-base 36. The first valve 26 and the second valve 27 of the second hydraulic circuit 3 and the master cylinder hydraulic sensor 28 of the first hydraulic circuit 2 are mounted on the surface of the sub-base 36 on which the sub-base housing 37 is mounted, and are covered by the sub-base housing 37.

[0046] The sub-substrate 36 is mounted to the main substrate 31 by connecting its ports P21, P22, and P24 to the ports P11, P12, and P16 of the main substrate 31. Preferably, the ports P11, P12, and P16 of the main substrate 31 and the ports P21, P22, and P24 of the sub-substrate 36 have a connection structure capable of sealing the brake fluid.

[0047] <Brake hydraulic control unit installed on the motorcycle>

[0048] The brake hydraulic control unit of the brake system according to the relevant implementation method is described in the motorcycle mounting state.

[0049] Figure 4 This is a diagram showing the brake hydraulic control unit of the braking system according to an embodiment of the present invention mounted on a motorcycle.

[0050] like Figure 4 As shown, the main substrate 31 and the sub-substrate 36 are arranged such that the sub-substrate 36 is located on the side closer to the foot pedal 7 of the motorcycle 100 compared to the main substrate 31.

[0051] <Braking System Effects>

[0052] The effects of the braking system according to the relevant implementation method will be explained.

[0053] In the brake hydraulic control unit 50 of the brake system 1, the inlet valve 21, release valve 22, and pump 24 of the hydraulic circuit (second hydraulic circuit 3), which is a booster-type hydraulic circuit, and the first valve 26 and second valve 27 of the hydraulic circuit (second hydraulic circuit 3), are separately mounted on a main base 31 and a sub-base 36. When all components are concentrated on a single base, many flow paths need to be formed on that base in a complex manner. Furthermore, a large external area is required to accommodate many components, so the brake hydraulic control unit 50 can only be miniaturized to a certain extent. In contrast, when each component is separately mounted on a main base 31 and a sub-base 36, the individual bases can be miniaturized with fewer constraints on the flow path and external area, thus allowing for a more compact brake hydraulic control unit 50. Therefore, the necessity of ensuring a large space in the motorcycle 100 is reduced, and the fitment of the brake system 1 into the motorcycle 100 is improved. Furthermore, the main substrate 31 can be used in the case where the hydraulic circuits (first hydraulic circuit 2, second hydraulic circuit 3) of both are not booster type hydraulic circuits, thus reducing manufacturing costs, etc.

[0054] Preferably, in the brake hydraulic control unit 50 of the brake system 1, the middle section 14a of the main path 14 of the hydraulic circuit (second hydraulic circuit 3), which is a booster-type hydraulic circuit, is not formed on the sub-base 36, but on the main base 31. Therefore, the number of ports that should be provided on the main base 31 and the sub-base 36 can be reduced, making the main base 31 and the sub-base 36 more compact, and further improving the compatibility of the brake system 1 with the motorcycle 100.

[0055] Particularly preferred is that, in the brake hydraulic control unit 50 of the brake system 1, the middle section 14a of the main flow path 14 of the hydraulic circuit (second hydraulic circuit 3) is connected to the first valve 26 via a partial flow path 31a formed on the main body 31 and a partial flow path 36a formed on the sub-body 36. The suction side of the pump 24 of the secondary flow path 15 of the hydraulic circuit (second hydraulic circuit 3) is connected to the second valve 27 of the supply flow path 16 via a partial flow path 31c formed on the main body 31 and a partial flow path 36b formed on the sub-body 36. Partial flow paths 31a and 36a are directly connected, and partial flow paths 31c and 36b are directly connected. With this configuration, by separating the main body 31 and the sub-body 36 from each other, the increase in the number of parts in the brake system 1 is suppressed.

[0056] Preferably, in the brake hydraulic control unit 50 of the brake system 1, only one hydraulic circuit (the second hydraulic circuit 3) is a booster-type hydraulic circuit, and the master cylinder hydraulic sensor 28 of the other hydraulic circuit (the first hydraulic circuit 2) is provided on the sub-base 36. Therefore, it is possible to perform a linked braking action that boosts the brake fluid in the wheel cylinder 13 of one hydraulic circuit (the second hydraulic circuit 3) based on the operation input in the other hydraulic circuit (the first hydraulic circuit 2). This reduces the necessity of adding multiple bases when neither of the two hydraulic circuits (the first hydraulic circuit 2 and the second hydraulic circuit 3) is a booster-type hydraulic circuit, and improves the assemblability of the brake system 1.

[0057] Particularly preferred is that the main body 31 is provided with the inlet valve 21, the release valve 22, and the pump 24 of the hydraulic circuits (first hydraulic circuit 2 and second hydraulic circuit 3) of both systems. With this configuration, the assemblability of the braking system 1 is further improved.

[0058] Preferably, in the brake hydraulic control unit 50 of the brake system 1, only the second hydraulic circuit 3 is a booster-type hydraulic circuit. Therefore, the brake hydraulic control unit 50 can be miniaturized while ensuring the user's feel for the handlebars 4, further improving the adaptability of the brake system 1 to the motorcycle 100.

[0059] Particularly preferred is that, for the operation of the foot pedal 7 input to the master cylinder 11 of the second hydraulic circuit 3, the auxiliary base 36 is positioned closer to the foot pedal 7 than the main base 31. This configuration prevents unnecessarily long wiring of the brake fluid line 41 from being increased.

[0060] <Variation Example-1>

[0061] Figure 5 This is a diagram showing a modified example of the braking system according to an embodiment of the present invention.

[0062] like Figure 5As shown, port P11 of the main flow path 14 of the second hydraulic circuit 3 formed on the main body 31, and port P21 of the main flow path 14 of the second hydraulic circuit 3 formed on the sub-base 36 are connected via brake fluid pipe 43. Furthermore, port P12 of the supply flow path 16 of the second hydraulic circuit 3 formed on the main body 31 and port P22 of the supply flow path 16 of the second hydraulic circuit 3 formed on the sub-base 36 are connected via brake fluid pipe 44. Additionally, port P24 of the main flow path 14 of the first hydraulic circuit 2 formed on the sub-base 36 is connected to brake fluid pipe 41 via brake fluid pipe 45. Brake fluid pipe 43 corresponds to the "first brake fluid pipe" in this invention, and brake fluid pipe 44 corresponds to the "second brake fluid pipe" in this invention.

[0063] With this configuration, the main base 31 and the secondary base 36 can be housed in a relatively small, individual space within the motorcycle 100. Therefore, the necessity of ensuring a large space within the motorcycle 100 is further reduced, and the mounting capacity of the brake system 1 within the motorcycle 100 is further improved. In this case, it is also preferable to position the secondary base 36 near the foot pedal 7 compared to the main base 31, thereby preventing unnecessarily long wiring lengths of the brake fluid line 41.

[0064] <Variation Example-2>

[0065] Alternatively, only the first hydraulic circuit 2 of the first hydraulic circuit 2 and the second hydraulic circuit 3 may be a booster-type hydraulic circuit capable of boosting the brake fluid in the wheel cylinder 13 by means of the pump 24. In this case, the first hydraulic circuit 2 corresponds to "one hydraulic circuit" in the present invention, and the second hydraulic circuit 3 corresponds to "the other hydraulic circuit" in the present invention.

[0066] Alternatively, both the first hydraulic circuit 2 and the second hydraulic circuit 3 may be booster-type hydraulic circuits capable of boosting the brake fluid in the wheel cylinder 13 by means of the pump 24. In such a case, one of the first hydraulic circuit 2 and the second hydraulic circuit 3 corresponds to "one hydraulic circuit" in this invention. The first valve 26 and the second valve 27 of the first hydraulic circuit 2 and the first valve 26 and the second valve 27 of the second hydraulic circuit 3 may also be concentrated on a single sub-base 36, or they may be respectively disposed on two sub-bases 36.

[0067] The embodiments have been described above, but the present invention is not limited to the described embodiments. For example, the present invention may also be implemented only in part of the described embodiments.

[0068] Explanation of reference numerals in the attached figures

[0069] 1 Braking system; 2 First hydraulic circuit; 3 Second hydraulic circuit; 4 Handlebars; 5 Front brake caliper; 6 Front rotor; 7 Foot pedal; 8 Rear brake caliper; 9 Rear rotor; 11 Master cylinder; 12 Reservoir; 13 Wheel cylinder; 14 Main flow path; 14a Intermediate section; 15 Secondary flow path; 16 Supply flow path; 21 Inlet valve; 22 Release valve; 23 Accumulator; 24 Pump; 25 Motor; 26 First valve; 27 Second valve; 28 Master cylinder hydraulic sensor; 29 Wheel cylinder hydraulic sensor; 31 Main body; 31a, 31b, 31c Partial flow paths; 32 Main body housing; 36 Secondary body; 36a, 36b, 36c Partial flow paths; 37 Secondary body housing; 41, 42, 43, 44, 45 Brake fluid lines; 50 Brake hydraulic control unit; 60 Control device; 100 Motorcycle; 101 Front wheel; 102 Rear wheel; P11, P12, P13, P14, P15, P16, P21, P22, P23, P24 Ports.

Claims

1. A brake hydraulic control unit for a motorcycle braking system, characterized in that, The aforementioned braking system includes: The first hydraulic circuit acts on the front wheel of the motorcycle; and The second hydraulic circuit acts on the rear wheel of the aforementioned motorcycle; The aforementioned first hydraulic circuit and the aforementioned second hydraulic circuit each include: The main path connects the master cylinder and the wheel cylinder; and The secondary flow path, driven by a pump, discharges the brake fluid from the aforementioned wheel cylinder to the middle section of the aforementioned main flow path. The hydraulic circuit of one of the aforementioned first hydraulic circuit and the aforementioned second hydraulic circuit is a booster type hydraulic circuit that can boost the brake fluid of the aforementioned wheel cylinder by means of the aforementioned pump, including a supply flow path that supplies the brake fluid of the aforementioned master cylinder to the suction side of the aforementioned pump in the aforementioned auxiliary flow path. The aforementioned brake hydraulic control unit includes: The inlet valve is installed in the aforementioned main flow path; A release valve is installed in the aforementioned secondary flow path; The first valve is disposed on the master cylinder side at the aforementioned intermediate section of the aforementioned main flow path in the aforementioned hydraulic circuit of the aforementioned party; and The second valve is installed in the aforementioned supply flow path of the hydraulic circuit of the aforementioned party; The aforementioned inlet valve, the aforementioned release valve, and the aforementioned pump of the hydraulic circuit of one party, and the aforementioned first valve and the aforementioned second valve of the hydraulic circuit of the other party, are separately arranged on the main body and the sub-body; The aforementioned main matrix and the aforementioned secondary matrix are separated from each other. The hydraulic circuit of the first hydraulic circuit and the other hydraulic circuit of the second hydraulic circuit mentioned above is not a booster type hydraulic circuit that can boost the brake fluid of the wheel cylinder by means of the pump mentioned above. On the aforementioned sub-base, a master cylinder hydraulic sensor is provided to detect the pressure of the brake fluid in the aforementioned master cylinder of the aforementioned hydraulic circuit of the other party.

2. The brake hydraulic control unit as described in claim 1, characterized in that, On the aforementioned main body, the aforementioned inlet valve, the aforementioned release valve, and the aforementioned pump of the aforementioned other party's hydraulic circuit are provided.

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