Motorcycle hydraulic brake distribution valve and vehicle linked brake system

Abstract

The present application relates to the technical field of vehicle braking, in particular to a motorcycle hydraulic brake distribution valve and a vehicle linkage braking system. The piston of the motorcycle hydraulic brake distribution valve is movably arranged in a piston cavity, a first elastic member is accommodated in a second chamber, and is used to make the piston have a tendency to move towards the first chamber; wherein when the piston moves from the first chamber to the second chamber against the elastic force of the first elastic member under the hydraulic pressure of the first chamber, the valve core assembly blocks the second oil inlet from the second chamber; when the piston moves from the second chamber to the first chamber under the hydraulic pressure of the second chamber and the elastic force of the first elastic member, the valve core assembly communicates the second oil inlet with the second chamber. The motorcycle hydraulic brake distribution valve has a simple structure, can reduce the manufacturing cost, and can also ensure the performance of linkage braking.

Description

Technical Field

[0001] This invention relates to the field of vehicle braking technology, and more specifically, to a motorcycle hydraulic brake distribution valve and a vehicle linkage braking system. Background Technology

[0002] Currently, existing motorcycle hydraulic braking systems are mainly divided into hydraulic braking systems that control the front wheel and hydraulic braking systems that control the rear wheel. However, if motorcycle users only control the hydraulic braking system of the rear wheel, the vehicle will wobble when braking, which can easily lead to fishtailing and even accidents. To solve the aforementioned problems, a linkage braking structure has been added to the motorcycle hydraulic braking system to achieve a braking linkage effect. However, the existing linkage braking structure has problems such as complex structure, cumbersome assembly process, and high cost. Summary of the Invention

[0003] The present invention aims to provide, for example, a motorcycle hydraulic brake distribution valve and a vehicle linkage braking system, which has a simple structure, is easy to install, and can ensure the performance of linkage braking while reducing manufacturing costs.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a motorcycle hydraulic brake distribution valve, the motorcycle hydraulic brake distribution valve including a valve body, a plug, a piston, a seal, a valve core assembly and a first elastic element;

[0006] The valve body is configured with a piston chamber, an opening, a first oil inlet, a first oil outlet, a second oil inlet, and a second oil outlet. One end of the piston chamber has an opening, and a plug is detachably connected to the valve body to seal the opening. The piston is movably disposed within the piston chamber, and a sealing element is fitted around the outer periphery of the piston, dividing the piston chamber into a first chamber and a second chamber. The first chamber is adjacent to the plug. The first oil inlet and the first oil outlet are both connected to the first chamber, and the second oil inlet and the second oil outlet are both connected to the second chamber. A first elastic element is housed in the second chamber and is used to give the piston a tendency to move towards the first chamber. The valve core assembly is located within the second chamber and is connected to the piston.

[0007] Specifically, when the piston moves from the first chamber to the second chamber under the hydraulic pressure of the first chamber, overcoming the elastic force of the first elastic element, the valve core assembly blocks the second oil inlet from the second chamber; when the piston moves from the second chamber to the first chamber under the hydraulic pressure of the second chamber and the elastic force of the first elastic element, the valve core assembly connects the second oil inlet to the second chamber.

[0008] In an optional embodiment, the piston has an oil passage hole that connects the second oil inlet to the second chamber, and the axial direction of the oil passage hole is parallel to the axial direction of the piston.

[0009] The valve core assembly includes a valve core, a second elastic element, and a limiting element; the valve core is slidably connected to an oil passage and is used to block or open one end of the oil passage that communicates with the second chamber; the second elastic element is connected to a piston and is used to give the valve core a tendency to move toward the position where the end communicating with the oil passage that communicates with the second chamber is blocked; the limiting element is connected to the valve body and is located on the side of the valve core near the first chamber, and at least a portion of the limiting element is accommodated in the piston chamber; the limiting element is used to abut against the valve core.

[0010] In an optional embodiment, the piston is provided with a strip-shaped hole along the piston axis, the strip-shaped hole connecting the second oil inlet and the oil passage hole; the limiting member is slidably engaged with the strip-shaped hole along the piston cavity axis.

[0011] The limiting element is used to abut against the end of the valve core that extends into the slot.

[0012] In an optional embodiment, the valve core assembly further includes a mounting base connected to the piston, and one end of the second elastic member is connected to the mounting base, while the other end of the second elastic member is connected to the valve core.

[0013] In an optional embodiment, the valve core includes a core rod and a sealing end cap. The core rod is connected to the sealing end cap and engages with an oil passage hole. The sealing end cap is used to block the end of the oil passage hole that communicates with the second chamber.

[0014] In an optional embodiment, the end of the piston facing the second chamber is provided with a mounting hole for accommodating a sealing end cap.

[0015] In an optional embodiment, the seal includes a first sealing ring and an isolation sealing ring, both of which are fitted onto the piston.

[0016] In an optional embodiment, the seal further includes a second sealing ring, which is fitted onto the piston;

[0017] Along the axial direction of the piston, the first sealing ring and the second sealing ring are spaced apart, and the strip hole is located between the first sealing ring and the second sealing ring.

[0018] In an optional embodiment, the inner circumferential surface of the piston chamber is provided with a limiting step, which is used to abut against the piston to restrict the movement of the piston from the first chamber to the second chamber.

[0019] In a second aspect, the present invention provides a vehicle linkage braking system, which includes a first brake pump, a first brake assembly, a second brake pump, a second brake assembly, and the aforementioned motorcycle hydraulic brake distribution valve.

[0020] The first brake pump and the first brake assembly are respectively connected to the first oil inlet and the first oil outlet, and the second brake pump and the second brake assembly are respectively connected to the second oil inlet and the second oil outlet.

[0021] The beneficial effects of the embodiments of the present invention include:

[0022] The motorcycle hydraulic brake distribution valve includes a valve body, a plug, a piston, a seal, a valve core assembly, and a first elastic element. The valve body is configured with a piston chamber, an opening, a first oil inlet, a first oil outlet, a second oil inlet, and a second oil outlet. One end of the piston chamber has an opening, and the plug is detachably connected to the valve body to seal the opening. The piston is movably disposed within the piston chamber, and the seal is fitted around the outer periphery of the piston, dividing the piston chamber into a first chamber and a second chamber. The first chamber is adjacent to the plug. The first oil inlet and the first oil outlet are both connected to the first chamber, and the second oil inlet and the second oil outlet are both connected to the first chamber. The system communicates with a second chamber; a first elastic element is housed in the second chamber and is used to give the piston a tendency to move towards the first chamber; a valve core assembly is located in the second chamber and connected to the piston; wherein, when the piston moves from the first chamber to the second chamber under the hydraulic action of the first chamber, overcoming the elastic force of the first elastic element, the valve core assembly blocks the second oil inlet from the second chamber; when the piston moves from the second chamber to the first chamber under the hydraulic action of the second chamber and the elastic force of the first elastic element, the valve core assembly connects the second oil inlet to the second chamber. This motorcycle hydraulic brake distribution valve has a simple structure, is easy to install, and while reducing manufacturing costs, it can also ensure the performance of linkage braking. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of the motorcycle hydraulic brake distribution valve in an embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of the valve body in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the piston, seal and valve core assembly in an embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional view of the piston, seal, and valve core assembly in an embodiment of the present invention;

[0028] Figure 5 This is a cross-sectional view of the piston in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the vehicle linkage braking system in an embodiment of the present invention.

[0030] Icons: 100-Motorcycle hydraulic brake distribution valve; 110-Valve body; 120-Plug; 130-Piston; 140-Seal; 150-Valve core assembly; 160-First elastic element; 111-Piston chamber; 112-Opening; 113-First oil inlet; 114-First oil outlet; 115-Second oil inlet; 116-Second oil outlet; 117-First chamber; 118-Second chamber; 131-Oil passage; 151-Valve core ; 152-Second elastic element; 153-Limiting element; 132-Strip hole; 154-Mounting base; 155-Core rod; 156-Sealing end cap; 133-Mounting hole; 141-First sealing ring; 142-Isolation sealing ring; 143-Second sealing ring; 119-Limiting step; 200-Vehicle linkage braking system; 210-First brake pump; 220-First brake assembly; 230-Second brake pump; 240-Second brake assembly. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0035] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0036] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0037] Please refer to Figures 1-5 This embodiment provides a motorcycle hydraulic brake distribution valve 100, which includes a valve body 110, a plug 120, a piston 130, a seal 140, a valve core assembly 150, and a first elastic element 160.

[0038] The valve body 110 is provided with a piston chamber 111, an opening 112, a first oil inlet 113, a first oil outlet 114, a second oil inlet 115, and a second oil outlet 116; one end of the piston chamber 111 is provided with the opening 112, and a plug 120 is detachably connected to the valve body 110 to seal the opening 112; the piston 130 is movably disposed in the piston chamber 111, and a sealing member 140 is sleeved on the outer periphery of the piston 130, dividing the piston chamber 111 into a first chamber 117. The first chamber 117 is adjacent to the plug 120, and the second chamber 118 is connected to the first chamber 117. The first oil inlet 113 and the first oil outlet 114 are both connected to the first chamber 117, and the second oil inlet 115 and the second oil outlet 116 are both connected to the second chamber 118. The first elastic element 160 is housed in the second chamber 118 and is used to give the piston 130 a tendency to move toward the first chamber 117. The valve core assembly 150 is located in the second chamber 118 and is connected to the piston 130.

[0039] Specifically, when the piston 130 moves from the first chamber 117 to the second chamber 118 under the hydraulic action of the first chamber 117, overcoming the elastic force of the first elastic element 160, the valve core assembly 150 blocks the second oil inlet 115 from the second chamber 118; when the piston 130 moves from the second chamber 118 to the first chamber 117 under the hydraulic action of the second chamber 118 and the elastic force of the first elastic element 160, the valve core assembly 150 connects the second oil inlet 115 to the second chamber 118.

[0040] Please refer to Figures 1-5The working principle of the motorcycle hydraulic brake distribution valve 100 is as follows:

[0041] The motorcycle hydraulic brake distribution valve 100 includes a valve body 110, a plug 120, a piston 130, a seal 140, a valve core assembly 150, and a first elastic element 160. The valve body 110 is provided with a piston chamber 111, an opening 112, a first oil inlet 113, a first oil outlet 114, a second oil inlet 115, and a second oil outlet 116. One end of the piston chamber 111 is provided with an opening 112. The plug 120 is detachably connected to the valve body 110 to block the opening 112. The piston 130 is movably disposed in the piston chamber 111, and the seal 140 is sleeved on the outer periphery of the piston 130, dividing the piston chamber 111 into a first chamber 117 and a second chamber 118. The first chamber 117 is adjacent to the plug 120.

[0042] The first oil inlet 113 and the first oil outlet 114 are both connected to the first chamber 117, and the second oil inlet 115 and the second oil outlet 116 are both connected to the second chamber 118; the first elastic member 160 is housed in the second chamber 118 and is used to give the piston 130 a tendency to move toward the first chamber 117; the valve core assembly 150 is located in the second chamber 118 and is connected to the piston 130.

[0043] Since the first oil inlet 113 is connected to the first chamber 117 and the second oil inlet 115 is connected to the second chamber 118, the pressure in the first chamber 117 and the second chamber 118 can be adjusted according to the oil pressure introduced by the first oil inlet 113 and the second oil inlet 115. In this way, when the pressure in the first chamber 117 is greater than the pressure in the second chamber 118, the piston 130 can move relative to the piston chamber 111 from the first chamber 117 to the second chamber 118. When the pressure in the first chamber 117 is less than the pressure in the second chamber 118, under the action of the pressure difference and the action of the first elastic element 160, the piston 130 will move from the second chamber 118 to the first chamber 117.

[0044] As can be seen from the above, under the pressure of the first chamber 117, the pressure of the second chamber 118, and the action of the first elastic member 160, the piston 130 will move in the piston chamber 111. Based on this, by arranging the valve core assembly 150 connected to the piston 130 in the piston chamber 111, and enabling the valve core assembly 150 to form a linkage brake according to the movement state of the piston 130, the structure of the motorcycle hydraulic brake distribution valve 100 can be simplified.

[0045] Specifically, when the brake pump connected to the first oil inlet 113 is in operation, the hydraulic brake assembly connected to the first oil outlet 114 begins to work and apply brakes. This increases the pressure at the first oil inlet 113, which in turn causes the pressure in the first chamber 117 to rise. Simultaneously, due to the increased pressure in the first chamber 117, the piston 130, under the hydraulic pressure of the first chamber 117, overcomes the elastic force of the first elastic element 160 and moves from the first chamber 117 to the second chamber 118. At this time, the valve core assembly 150 can block the second oil inlet 115 from the second chamber 118. After the second oil inlet 115 is blocked from the second chamber 118, as the piston 130 continues to move, the volume of the second chamber 118 will gradually decrease, thereby increasing the pressure in the second chamber 118, which in turn causes the hydraulic braking assembly connected to the second oil outlet 116 to start working and perform braking. Thus, the linkage braking of the braking assemblies connected to the first oil outlet 114 and the second oil outlet 116 can be realized.

[0046] When the brake pump connected to the first oil inlet 113 is in a stopped working state, the pressure in the first chamber 117 is less than or equal to the pressure in the second chamber 118. However, since the first elastic element 160 is installed in the second chamber 118, the piston 130 can be pushed from the second chamber 118 to the first chamber 117 under the action of the first elastic element 160. At this time, the valve core assembly 150 connects the second oil inlet 115 to the second chamber 118, so that the hydraulic oil output by the brake pump connected to the second oil inlet 115 can enter the second chamber 118 through the second oil inlet 115 and be introduced into its corresponding brake assembly for braking through the second oil outlet 116.

[0047] In summary, the structure of the motorcycle hydraulic brake distribution valve 100, through the above-described structural design, simplifies the internal structure of the valve body 110, thereby facilitating assembly and reducing the manufacturing cost of the motorcycle hydraulic brake distribution valve 100 structure; in addition, this structural design can ensure the stability of the linkage braking.

[0048] It should be noted that when the motorcycle hydraulic brake distribution valve 100 is in its initial position, the piston 130 moves from the second chamber 118 to the first chamber 117 to the end of its stroke under the action of the first elastic element 160. At this time, the second oil inlet 115 is in communication with the second chamber 118. When the first oil inlet 113 starts to receive oil, it can drive the piston 130 to move from the first chamber 117 to the second chamber 118, thus forming a braking linkage effect. The specific process is as described above and will not be repeated here. In addition, in this embodiment, the positions of the first oil inlet 113 and the first oil outlet 114 can be interchanged; one of them can also be set to a blocked state, in which case either the first oil inlet 113 or the first oil outlet 114 can be used as both an oil inlet and an oil outlet simultaneously.

[0049] Further, please refer to Figures 1-5 In this embodiment, the piston 130 is provided with an oil passage 131 that connects the second oil inlet 115 and the second chamber 118. The axial direction of the oil passage 131 is parallel to the axial direction of the piston 130.

[0050] In configuring the valve core assembly 150, this embodiment uses a valve core assembly 150 including a valve core 151, a second elastic member 152, and a limiting member 153; the valve core 151 is slidably connected to the oil passage 131 and is used to block or open one end of the oil passage 131 that communicates with the second chamber 118; the second elastic member 152 is connected to the piston 130 and is used to make the valve core 151 have a tendency to move toward the position where the end of the oil passage 131 that communicates with the second chamber 118 is blocked; the limiting member 153 is connected to the valve body 110 and is located on the side of the valve core 151 near the first chamber 117, and at least a portion of the limiting member 153 is accommodated in the piston chamber 111; the limiting member 153 is used to abut against the valve core 151.

[0051] Furthermore, when installing the limiting member 153, this embodiment uses a piston 130 with a strip hole 132 along the axial direction of the piston 130. The strip hole 132 connects the second oil inlet 115 with the oil passage 131. The limiting member 153 is slidably engaged with the strip hole 132 along the axial direction of the piston cavity 111. The limiting member 153 is used to abut against one end of the valve core 151 that extends into the strip hole 132.

[0052] Therefore, through the structure of the valve core assembly 150 and the piston 130 described above, the movement of the piston 130 relative to the piston chamber 111 can be guided by the sliding cooperation between the limiting member 153 and the strip hole 132; at the same time, the limiting member 153 can limit the position of the valve core 151, thereby ensuring that when the piston 130 moves from the second chamber 118 to the first chamber 117, the valve core 151 can connect the second oil inlet 115 with the second chamber 118.

[0053] Specifically, when the limiting member 153 cooperates with the strip hole 132, the maximum stroke of the piston 130 in the piston chamber 111 is the length of the strip hole 132. When the piston 130 is in the initial position, under the action of the first elastic member 160, the piston 130 moves towards the first chamber 117 to the end of its stroke. At this time, the valve core 151 abuts against the limiting member 153. Through the abutment between the valve core 151 and the limiting member 153, the valve core 151 can overcome the elastic action of the second elastic member 152 and move to the position where the oil passage hole 131 is open to the second chamber 118. Thus, the oil passage hole 131 is in the state where the oil passage hole 131 is open to the second chamber 118.

[0054] After oil begins to enter through the first oil inlet 113, causing the pressure in the first chamber 117 to rise, as the piston 130 moves from the first chamber 117 toward the second chamber 118, the valve core assembly 150 moves synchronously with the piston 130. Simultaneously, due to the gradual increase in the distance between the end of the oil passage 131 communicating with the second chamber 118 and the limiting member 153, the valve core 151 also moves toward the limiting member 153 under the action of the second elastic member 152, and thus moves with the piston... The continuous movement of 130 will cause the piston 130 to move from the first chamber 117 to the second chamber 118 to the end of its stroke, causing the valve core 151 to disengage from the limiting member 153. At this time, the valve core 151 can move towards the limiting member 153 under the action of the second elastic member 152 to the state of abutting against the piston 130, thereby blocking the end of the oil passage 131 that connects to the second chamber 118, thus blocking the second oil inlet 115 from the second chamber 118.

[0055] In summary, through the above structural design, the valve core 151 can act synchronously with the movement of the piston 130, thereby improving the stability of the motorcycle hydraulic brake distribution valve 100 structure. This allows the motorcycle hydraulic brake distribution valve 100 structure to gradually achieve linkage based on pressure changes while playing a linkage braking role. Moreover, in this process, it can improve the stability of pressure distribution and enhance the balance of pressure regulation.

[0056] It should be noted that, as described above, the maximum stroke of piston 130 within piston chamber 111 is equal to the length of the strip-shaped hole 132. Thus, when piston 130 moves within piston chamber 111 under pressure, its movement can be restricted by its contact with the plug 120. Furthermore, during its movement, the elastic contraction of the first elastic element 160 ensures that the continuous movement of piston 130 requires a continuous increase in pressure within the first chamber 117, thereby guaranteeing the smoothness of the movement. Simultaneously, the contact between the strip-shaped hole 132 and the limiting element 153 restricts the movement of piston 130. In addition, a limiting step 119 can be provided on the inner circumferential surface of piston chamber 111. The limiting step 119 is used to contact piston 130, restricting the movement of piston 130 from the first chamber 117 to the second chamber 118. This ensures that the internal pressure of the first chamber 117 and the second chamber 118 stabilizes after piston 130 has moved to the appropriate position.

[0057] Based on the above structure, please refer to Figures 1-5 In this embodiment, to facilitate the installation of the second elastic element 152, the valve core assembly 150 further includes a mounting base 154, which is connected to the piston 130. One end of the second elastic element 152 abuts against the mounting base 154, and the other end of the second elastic element 152 abuts against the valve core 151. Furthermore, when configuring the valve core 151, to facilitate the sealing of the oil passage 131, the valve core 151 includes a core rod 155 and a sealing end cap 156. The core rod 155 is connected to the sealing end cap 156, and the core rod 155 cooperates with the oil passage 131. The sealing end cap 156 is used to seal the end of the oil passage 131 that communicates with the second chamber 118. Furthermore, in order to simplify the structure of the valve core assembly 150 and avoid the valve core 151 occupying too much space during movement, the piston 130 is provided with a mounting hole 133 for accommodating the sealing end cap 156 at the end facing the second chamber 118, thereby allowing the sealing end cap 156 of the valve core 151 to move relative to each other within the mounting hole 133.

[0058] Please refer to Figures 1-5 In this embodiment, to ensure the independence of the first chamber 117 and the second chamber 118, i.e., to improve the sealing performance of the first chamber 117 and the second chamber 118, in an optional implementation, the sealing element 140 includes a first sealing ring 141 and an isolation sealing ring 142, both of which are fitted onto the piston 130. It should be noted that, in addition, a sealing ring can also be provided on the outer periphery of the plug 120 or at its connection with the valve body 110. The first sealing ring 141 and the isolation sealing ring 142 can be integrated into one unit, i.e., a single sealing ring structure can replace both the first sealing ring 141 and the isolation sealing ring 142.

[0059] Further, please refer to Figures 1-5 In this embodiment, the sealing member 140 further includes a second sealing ring 143, which is sleeved on the piston 130; along the axial direction of the piston 130, the first sealing ring 141 and the second sealing ring 143 are spaced apart, and the strip hole 132 is located between the first sealing ring 141 and the second sealing ring 143.

[0060] Based on the above, please refer to Figures 1-6 This embodiment also provides a vehicle linkage braking system 200, which includes a first brake pump 210, a first brake assembly 220, a second brake pump 230, a second brake assembly 240, and the aforementioned motorcycle hydraulic brake distribution valve 100; wherein, the first brake pump 210 and the first brake assembly 220 are respectively connected to the first oil inlet 113 and the first oil outlet 114, and the second brake pump 230 and the second brake assembly 240 are respectively connected to the second oil inlet 115 and the second oil outlet 116.

[0061] As can be seen from the above, when the first brake pump 210 is in working state, as the first brake pump 210 introduces oil into the first chamber 117, while driving the first brake assembly 220 to brake, it will drive the piston 130 to move from the first chamber 117 to the second chamber 118, thereby causing the pressure in the second chamber 118 to gradually increase, thus causing the second brake assembly 240 to start braking, thereby realizing the linkage braking of the first brake assembly 220 and the second brake assembly 240.

[0062] Therefore, by adopting the motorcycle hydraulic brake distribution valve 100 described above, the vehicle linkage braking system 200 can simplify the system structure, reduce manufacturing costs, and ensure linkage braking performance.

[0063] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A motorcycle hydraulic brake distribution valve, characterized in that: The motorcycle hydraulic brake distribution valve includes a valve body, a plug, a piston, a seal, a valve core assembly, and a first elastic element. The valve body is configured with a piston chamber, an opening, a first oil inlet, a first oil outlet, a second oil inlet, and a second oil outlet. One end of the piston chamber has an opening, and a plug is detachably connected to the valve body to seal the opening. The piston is movably disposed within the piston chamber, and a sealing element is fitted around the outer periphery of the piston, dividing the piston chamber into a first chamber and a second chamber. The first chamber is adjacent to the plug. The first oil inlet and the first oil outlet are both connected to the first chamber, and the second oil inlet and the second oil outlet are both connected to the second chamber. The first elastic element is housed in the second chamber and is used to give the piston a tendency to move towards the first chamber. The valve core assembly is located within the second chamber and is connected to the piston. Specifically, when the piston moves from the first chamber to the second chamber under the hydraulic pressure of the first chamber, overcoming the elastic force of the first elastic element, the valve core assembly blocks the second oil inlet from the second chamber; when the piston moves from the second chamber to the first chamber under the hydraulic pressure of the second chamber and the elastic force of the first elastic element, the valve core assembly connects the second oil inlet to the second chamber. The piston has an oil passage hole that connects the second oil inlet to the second chamber, and the axial direction of the oil passage hole is parallel to the axial direction of the piston. The valve core assembly includes a valve core, a second elastic element, and a limiting element; the valve core is slidably connected to the oil passage and is used to block or open one end of the oil passage that communicates with the second chamber; the second elastic element is connected to the piston and is used to give the valve core a tendency to move toward the position where the end of the oil passage that communicates with the second chamber is blocked; the limiting element is connected to the valve body and is located on the side of the valve core near the first chamber, and at least a portion of the limiting element is accommodated in the piston chamber; the limiting element is used to abut against the valve core.

2. The motorcycle hydraulic brake distribution valve according to claim 1, characterized in that: The piston has a strip-shaped hole along its axial direction, which connects the second oil inlet to the oil passage; the limiting member is slidably engaged with the strip-shaped hole along the axial direction of the piston cavity. The limiting member is used to abut against one end of the valve core that extends into the strip hole.

3. The motorcycle hydraulic brake distribution valve according to claim 1, characterized in that: The valve core assembly further includes a mounting base connected to the piston, and one end of the second elastic element is connected to the mounting base, while the other end of the second elastic element is connected to the valve core.

4. The motorcycle hydraulic brake distribution valve according to claim 1, characterized in that: The valve core includes a core rod and a sealing end cap. The core rod is connected to the sealing end cap and cooperates with the oil passage hole. The sealing end cap is used to block the end of the oil passage hole that communicates with the second chamber.

5. The motorcycle hydraulic brake distribution valve according to claim 4, characterized in that: The piston has a mounting hole for accommodating the sealing end cap at one end facing the second chamber.

6. The motorcycle hydraulic brake distribution valve according to any one of claims 1-5, characterized in that: The sealing element includes a first sealing ring and an isolation sealing ring, both of which are fitted onto the piston.

7. The motorcycle hydraulic brake distribution valve according to claim 6, characterized in that: The sealing element further includes a second sealing ring, which is sleeved on the piston; Along the axial direction of the piston, the first sealing ring and the second sealing ring are spaced apart, and the strip hole is located between the first sealing ring and the second sealing ring.

8. A vehicle linkage braking system, characterized in that: The vehicle linkage braking system includes a first brake pump, a first brake assembly, a second brake pump, a second brake assembly, and a motorcycle hydraulic brake distribution valve as described in any one of claims 1-7. The first brake pump and the first brake assembly are respectively connected to the first oil inlet and the first oil outlet, and the second brake pump and the second brake assembly are respectively connected to the second oil inlet and the second oil outlet.

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