Linkage valve and linkage braking system

Abstract

The utility model belongs to the technical field of brake equipment, and discloses a linkage valve and a linkage brake system.The linkage valve comprises a valve body, a plunger, a sealing piece, a leather cup and a reset piece, the valve body is provided with a cavity, the plunger is arranged in the cavity in a sliding mode, the sealing piece is arranged in the cavity and divides the cavity into a first cavity part and a second cavity part which are independent of each other, and the first cavity part and the second cavity part are arranged in the cavity. The first end of the plunger is located in the first cavity, the second end of the plunger is located in the second cavity, a first oil inlet pipe and a first oil outlet pipe on the valve body are communicated with the first cavity, a second oil inlet pipe, a second oil outlet pipe and a third oil outlet pipe on the valve body are communicated with the second cavity, and the leather cup is configured to enable brake fluid in the second oil inlet pipe to flow to the second cavity in a one-way mode. The reset piece is configured to enable the plunger to always have a trend of sliding towards the first cavity part; the linkage braking system comprises the linkage valve. According to the linkage braking system, the braking handles on the two sides of the two-wheeled vehicle can provide linkage braking, braking is effective, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake equipment, in particular to a linkage valve and a linkage brake system. Background Art

[0002] With the increasing traffic pressure today, electric vehicles and motorcycles have become the preferred means of transportation for most people due to their cost-effectiveness and convenience. With the increase in transportation modes and vehicles on the road, the demand for braking is becoming more and more important, and it needs to be safer, smoother and more timely.

[0003] Since most traditional two-wheeled vehicles use independent front and rear braking systems, braking requires a balanced distribution of hand and foot force, relying on the driver's experience and proficiency. Therefore, a coordinated braking system (CBS) has emerged in the prior art. This system distributes braking force based on a combination of factors, such as vehicle load, road adhesion, and tire wear, to achieve smooth braking. Market research has shown that users tend to use the rear brake (recommended for driving tests). However, due to varying user habits, many still prioritize right-hand braking. This can lead to front wheel locking, rollovers, and skidding, resulting in accidents. The primary cause of locking and skidding is uneven braking distribution. Therefore, it is crucial to properly distribute front and rear braking force to ensure safe, rapid, and smooth stopping of high-speed two-wheeled vehicles in emergencies. Furthermore, users may brake with one hand. If the CBS system is on the other hand, it cannot be triggered, preventing effective braking. Utility Model Content

[0004] The purpose of the utility model is to provide a linkage valve and a linkage braking system, in which the brake handles on both sides of the two-wheeled vehicle have a linkage braking effect, and users who are accustomed to braking with their left hands and users who are accustomed to braking with their right hands can both provide linkage braking when braking, so that the braking is effective, safe and reliable.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A linkage valve, comprising:

[0007] A valve body having a cavity, wherein the valve body is provided with a first oil inlet pipe, a first oil outlet pipe, a second oil inlet pipe, a second oil outlet pipe and a third oil outlet pipe;

[0008] a plunger, slidably disposed in the cavity;

[0009] a sealing member disposed in the cavity, for sealing a gap between the plunger and the cavity, and dividing the cavity into a first cavity portion and a second cavity portion that are independent of each other, wherein the first end of the plunger is located in the first cavity portion, and the second end is located in the second cavity portion, the first oil inlet pipe and the first oil outlet pipe are connected to the first cavity portion, and the second oil inlet pipe, the second oil outlet pipe, and the third oil outlet pipe are connected to the second cavity portion;

[0010] a leather cup, disposed at the second end of the plunger, configured to allow the brake fluid in the second oil inlet pipe to flow unidirectionally to the second chamber;

[0011] The reset member is configured to make the plunger always have a tendency to slide toward the first cavity.

[0012] Preferably, the valve body includes a valve main body, a first connecting piece, a second connecting piece and a third connecting piece, the cavity is provided on the valve main body, and the valve main body is provided with a first connecting hole connected to the first cavity portion and a second connecting hole and a third connecting hole connected to the second cavity portion; wherein,

[0013] The first connecting member is connected to the first connecting hole, and the first connecting member has a first flow channel connected to the first cavity. The first oil inlet pipe and the first oil outlet pipe are both provided on the first connecting member and connected to the first flow channel.

[0014] The second connecting member is connected to the second connecting hole, and the second connecting member has a second flow channel connected to the second cavity. The second oil inlet pipe and the second oil outlet pipe are both provided on the second connecting member and connected to the second flow channel.

[0015] The third connecting member is connected to the third connecting hole, and the third connecting member has a third flow channel connected to the second cavity. The third oil outlet pipe is provided on the third connecting member and connected to the third flow channel.

[0016] Preferably, the first connecting member includes a first oil inlet bolt, the first connecting hole is set as a screw hole, and the first oil inlet bolt is threadedly connected to the first connecting hole;

[0017] The second connecting member includes a second oil inlet bolt, the second connecting hole is configured as a screw hole, and the second oil inlet bolt is threadedly connected to the second connecting hole;

[0018] The third connecting member includes an oil outlet bolt, the third connecting hole is configured as a screw hole, and the oil outlet bolt is threadedly connected to the third connecting hole.

[0019] Preferably, the cavity is provided with a limiting member, which is arranged corresponding to the first cavity portion, and is suitable for abutting against the plunger when the plunger slides toward the first cavity portion to an extreme position.

[0020] Preferably, the valve body is provided with a connecting screw hole connected to the first cavity portion, and the limiting member includes a limiting bolt, which is threadedly connected to the connecting screw hole.

[0021] Preferably, the reset member comprises a spring, the spring is located in the second cavity, a first end of the spring abuts against the second end of the plunger, and a second end of the spring abuts against an inner wall of the second cavity.

[0022] Preferably, a mounting groove is provided on a peripheral wall of the plunger, and the leather cup is fixed in the mounting groove.

[0023] Preferably, an embedding groove is provided on the inner wall of the cavity, and the sealing member is embedded in the embedding groove.

[0024] Preferably, the sealing member is made of rubber.

[0025] A linkage brake system, comprising a first disc brake upper pump, a second disc brake upper pump, a front disc brake caliper, a rear disc brake caliper, and also comprising any linkage valve described above; wherein,

[0026] The rear disc brake caliper has an oil inlet pipe A and an oil inlet pipe B, and the front disc brake caliper has an oil inlet pipe C;

[0027] The first disc brake upper pump is connected to the first oil inlet pipe, and the first oil outlet pipe is connected to the oil inlet pipe A; the second disc brake upper pump is connected to the second oil inlet pipe, and the second oil outlet pipe is connected to the oil inlet pipe B; the third oil outlet pipe is connected to the oil inlet pipe C.

[0028] Beneficial effects:

[0029] When the linkage valve is used in a linkage brake system, the overall linkage scheme is divided into two sealed oil circuits. Specifically, sealed oil circuit one connects to the first oil inlet pipe of the linkage valve through the first disc brake upper pump. Brake fluid from the first disc brake upper pump flows into the linkage pump through the first oil inlet pipe. Part of the brake fluid enters the rear disc brake caliper through the first oil outlet pipe and oil inlet pipe A, driving the rear disc brake caliper to clamp the rear brake disc. The other part of the brake fluid enters the first chamber, creating oil pressure in the first chamber, pushing the plunger toward the second chamber, and pumping the brake fluid in the second chamber into the third oil outlet pipe. After passing through the third oil outlet pipe and oil inlet pipe C, it enters the front disc brake caliper, driving the front disc brake caliper to clamp the front brake disc, thereby simultaneously clamping the front and rear calipers and forming a linkage. The sealed oil circuit 2 is connected to the second oil inlet pipe of the linkage valve through the second disc brake upper pump. The brake fluid of the second disc brake upper pump flows into the linkage pump through the second oil inlet pipe. A part of the brake fluid enters the rear disc brake caliper through the second oil outlet pipe and the oil inlet pipe B, driving the rear disc brake caliper to clamp the rear brake disc; the other part of the brake fluid flows through the leather cup and enters the second cavity under the action of the leather cup. This part of the brake fluid then enters the front disc brake caliper through the third oil outlet pipe and the oil inlet pipe C, driving the front disc brake caliper to clamp the front brake disc, thereby forming a linkage.

[0030] This linked pump is used in a linked braking system. The left and right brake handles drive the first and second disc brake pumps, respectively. This provides a linked braking effect for both left-hand and right-hand users, ensuring effective, safe, reliable, smooth, and stable braking. The linked disc brakes operate independently on both sides, maintaining significant braking force even in a failure mode, ensuring reliable and effective use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a cross-sectional view of the linkage valve provided by the utility model;

[0032] Figure 2 It is a schematic diagram of the structural components of the linkage braking system provided by the utility model;

[0033] Figure 3 It is a schematic diagram of the rear disc brake caliper provided by the utility model.

[0034] In the picture:

[0035] 1. Linkage valve; 101. First cavity; 102. Second cavity; 103. Embedded groove; 11. Valve body; 1101. Valve main body; 11011. First connecting hole; 11012. Second connecting hole; 11013. Third connecting hole; 1102. First connecting member; 11021. First flow channel; 1103. Second connecting member; 11031. Second flow channel; 1104. Third connecting member; 11041. Third flow channel; 111. First oil inlet pipe; 112. First oil outlet pipe; 113. Second oil inlet pipe; 114. Second oil outlet pipe; 115. Third oil outlet pipe; 12. Plunger; 121. Mounting groove; 13. Sealing member; 14. Leather cup; 15. Reset member; 16. Limiting member;

[0036] 2. Pump up the first disc brake;

[0037] 3. Install the second disc brake pump;

[0038] 4. Front disc brake caliper;

[0039] 5. Rear disc brake caliper; 51. Oil inlet pipe A; 52. Oil inlet pipe B;

[0040] 61, first connecting oil pipe; 62, second connecting oil pipe; 63, third connecting oil pipe; 64, fourth connecting oil pipe; 65, fifth connecting oil pipe;

[0041] 71. Front brake disc; 72. Rear brake disc. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0043] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0046] Reference Figures 1 to 3 As shown, this embodiment provides a linkage brake system, which includes a first disc brake upper pump 2, a second disc brake upper pump 3, a front disc brake caliper 4, a rear disc brake caliper 5, and also includes a brake valve.

[0047] Specifically, the brake valve includes a valve body 11, a plunger 12, a seal 13, a leather cup 14, and a reset member 15. The valve body 11 has a cavity, and is provided with a first oil inlet pipe 111, a first oil outlet pipe 112, a second oil inlet pipe 113, a second oil outlet pipe 114, and a third oil outlet pipe 115. The plunger 12 is slidably disposed in the cavity. The seal 13 is disposed in the cavity to seal the gap between the plunger 12 and the cavity and to separate the cavity into a first cavity portion 101 and a second cavity portion 102 that are independent of each other. The first end of the plunger 12 is located in the first cavity portion 101, and the second end is located in the second cavity portion 102. The first oil inlet pipe 111 and the first oil outlet pipe 112 are connected to the first cavity portion 101, and the second oil inlet pipe 113, the second oil outlet pipe 114, and the third oil outlet pipe 115 are connected to the second cavity portion 102. The leather cup 14 is provided at the second end of the plunger 12 and is configured to allow the brake fluid in the second oil inlet pipe 113 to flow unidirectionally to the second cavity 102 . The reset member 15 is configured to allow the plunger 12 to always have a tendency to slide toward the first cavity 101 .

[0048] Specifically, the rear disc brake caliper 5 has oil inlet pipes A51 and B52, while the front disc brake caliper 4 has an oil inlet pipe C (not shown). The first disc brake upper pump 2 is connected to the first oil inlet pipe 111, and the first oil outlet pipe 112 is connected to the oil inlet pipe A51. The second disc brake upper pump 3 is connected to the second oil inlet pipe 113, and the second oil outlet pipe 114 is connected to the oil inlet pipe B52. The third oil outlet pipe 115 is connected to the oil inlet pipe C.

[0049] In this embodiment, when the linkage valve 1 is used in a linkage brake system, the overall linkage scheme is divided into two sealed oil circuits. Specifically, sealed oil circuit 1 is connected to the first oil inlet pipe 111 of the linkage valve 1 through the first disc brake upper pump 2. The brake fluid of the first disc brake upper pump 2 flows into the linkage pump through the first oil inlet pipe 111. Part of the brake fluid enters the rear disc brake caliper 5 through the first oil outlet pipe 112 and the oil inlet pipe A51, driving the rear disc brake caliper 5 to clamp the rear brake disc 72. The other part of the brake fluid enters the first chamber 101, generating oil pressure in the first chamber 101, pushing the plunger 12 to slide toward the second chamber 102, and the brake fluid in the second chamber 102 is pumped into the third oil outlet pipe 115. After passing through the third oil outlet pipe 115 and the oil inlet pipe C, it enters the front disc brake caliper 4, driving the front disc brake caliper 4 to clamp the front brake disc 71, thereby simultaneously clamping the front and rear calipers and forming a linkage. The sealed oil circuit 2 is connected to the second oil inlet pipe 113 of the linkage valve 1 through the second disc brake upper pump 3. The brake fluid of the second disc brake upper pump 3 flows into the linkage pump through the second oil inlet pipe 113. A part of the brake fluid enters the rear disc brake caliper 5 through the second oil outlet pipe 114 and the oil inlet pipe B52, driving the rear disc brake caliper 5 to clamp the rear brake disc 72; the other part of the brake fluid flows through the leather cup 14, and enters the second cavity 102 under the action of the leather cup 14. This part of the brake fluid then enters the front disc brake caliper 4 through the third oil outlet pipe 115 and the oil inlet pipe C, driving the front disc brake caliper 4 to clamp the front brake disc 71, thereby forming a simultaneous clamping of the front and rear calipers, forming a linkage.

[0050] This linked pump is used in a linked braking system. The left and right brake handles drive the first and second disc brake pumps 2 and 3, respectively. This provides a linked braking effect for both left-hand and right-hand users, ensuring effective, safe, reliable, smooth, and stable braking. The linked disc brakes operate independently on both sides, maintaining significant braking force even in a failure mode, making them reliable and effective.

[0051] Specifically in this embodiment, the first oil inlet pipe 111 is provided with a first oil inlet joint, the first oil outlet pipe 112 is provided with a first oil outlet joint, the second oil inlet pipe 113 is provided with a second oil inlet joint, the second oil outlet pipe 114 is provided with a second oil outlet joint, and the third oil outlet pipe 115 is provided with a third oil outlet joint. Specifically, the first disc brake upper pump 2 is connected to the first oil inlet joint via a first connecting oil pipe 61 and is connected to the first oil inlet pipe 111. The first oil outlet joint is connected to the oil inlet pipe A51 via a second connecting oil pipe 62, and the first oil outlet pipe 112 is connected to the oil inlet pipe A51 via the second connecting oil pipe 62. The second disc brake upper pump 3 is connected to the second oil inlet joint via a third connecting oil pipe 63 and is connected to the second oil inlet pipe 113. The second oil outlet joint is connected to the oil inlet pipe B52 via a fourth connecting oil pipe 64, and the second oil outlet pipe 114 is connected to the oil inlet pipe B52 via the fourth connecting oil pipe 64. The third oil outlet joint is connected to the oil inlet pipe C through the fifth connecting oil pipe 65 , and the third oil outlet pipe 115 is connected to the oil inlet pipe C through the fifth connecting oil pipe 65 .

[0052] Specifically in this embodiment, the valve body 11 includes a valve main body 1101, a first connecting member 1102, a second connecting member 1103, and a third connecting member 1104. The cavity is provided on the valve main body 1101. The valve main body 1101 defines a first connecting hole 11011 connected to the first cavity 101, and a second connecting hole 11012 and a third connecting hole 11013 connected to the second cavity 102. The first connecting member 1102 is connected to the first connecting hole 11011 and has a first flow passage 11021 connected to the first cavity 101. The first oil inlet pipe 111 and the first oil outlet pipe 112 are both provided on the first connecting member 1102 and are both connected to the first flow passage 11021. The second connecting member 1103 is connected to the second connecting hole 11012, and the second connecting member 1103 has a second flow channel 11031 connected to the second cavity 102. The second oil inlet pipe 113 and the second oil outlet pipe 114 are both provided on the second connecting member 1103 and are both connected to the second flow channel 11031. The third connecting member 1104 is connected to the third connecting hole 11013, and the third connecting member 1104 has a third flow channel 11041 connected to the second cavity 102. The third oil outlet pipe 115 is provided on the third connecting member 1104 and is connected to the third flow channel 11041.

[0053] Specifically, the first connecting member 1102 is detachably mounted on the valve body 1101 through a first connecting hole 11011, the second connecting member 1103 is detachably mounted on the valve body 1101 through a second connecting hole 11012, and the third connecting member 1104 is detachably mounted on the valve body 1101 through a third connecting hole 11013. The separate arrangement of the valve body 1101, the first connecting member 1102, the second connecting member 1103, and the third connecting member 1104 facilitates assembly and replacement.

[0054] Optionally, the first connecting member 1102 includes a first oil inlet bolt, a first connecting hole 11011 configured as a threaded hole, and the first oil inlet bolt is threadedly connected to the first connecting hole 11011. The second connecting member 1103 includes a second oil inlet bolt, a second connecting hole 11012 configured as a threaded hole, and the second oil inlet bolt is threadedly connected to the second connecting hole 11012. The third connecting member 1104 includes an oil outlet bolt, a third connecting hole 11013 configured as a threaded hole, and the oil outlet bolt is threadedly connected to the third connecting hole 11013. Specifically, the first flow channel 11021 is defined within the first oil inlet bolt, the second flow channel 11031 is defined within the second oil inlet bolt, and the third flow channel 11041 is defined within the oil outlet bolt. The threaded engagement between the first oil inlet bolt and the first connecting hole 11011, between the second oil inlet bolt and the second connecting hole 11012, and between the oil outlet bolt and the third connecting hole 11013 further ensures the sealing of the connection points and prevents oil leakage.

[0055] In some other optional embodiments, the first connecting member 1102, the second connecting member 1103 and the third connecting member 1104 can be directly set as connecting plugs, and the three connecting plugs can be interference-fitted into the first connecting hole 11011, the second connecting hole 11012 and the third connecting hole 11013 respectively.

[0056] In this embodiment, the cavity is provided with a stopper 16, which is arranged corresponding to the first cavity portion 101. The stopper 16 is adapted to abut against the plunger 12 when the plunger 12 slides to the limit position toward the first cavity portion 101. The provision of the stopper 16 can provide an effective limit for the plunger 12 to slide toward the first cavity portion 101.

[0057] In this embodiment, the valve body 11 defines a connecting threaded hole that communicates with the first chamber 101. The stopper 16 includes a stopper bolt that is threadedly engaged with the connecting threaded hole. Specifically, the stopper bolt is adapted to abut against the plunger 12 when the plunger 12 slides toward the first chamber 101 to its limit position. The cooperation between the stopper bolt and the connecting threaded hole provides a simple structure and facilitates assembly and disassembly.

[0058] In this embodiment, the return member 15 comprises a spring located within the second cavity 102. The first end of the spring abuts the second end of the plunger 12, and the second end of the spring abuts the inner wall of the second cavity 102. Specifically, when the brake fluid in the first cavity lacks hydraulic pressure, the spring pushes the plunger 12 toward the first cavity and eventually stops the plunger 12 against the stopper 16.

[0059] Specifically, a first sleeve is provided at the second end of the plunger 12 , a second sleeve is provided on the inner wall of the second cavity 102 , the first end of the spring is sleeved on the first sleeve, and the second end of the spring is sleeved on the second sleeve.

[0060] In this embodiment, a mounting groove 121 is formed on the peripheral wall of the plunger 12, and the leather cup 14 is fixed in the mounting groove 121. Specifically, the mounting groove 121 is annular in shape for mounting the annular leather cup 14.

[0061] In this embodiment, the inner wall of the cavity is provided with an embedding groove 103, and the sealing member 13 is embedded in the embedding groove 103. Specifically, the sealing member 13 includes a sealing ring, and the sealing groove is annular in shape, and the sealing ring is embedded in the annular sealing groove.

[0062] Optionally, the material of the sealing member 13 is set to rubber. Rubber material has low cost, is easy to produce, and has strong sealing performance.

[0063] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A linkage valve, characterized in that: include: A valve body (11) has a cavity, and the valve body (11) is provided with a first oil inlet pipe (111), a first oil outlet pipe (112), a second oil inlet pipe (113), a second oil outlet pipe (114), and a third oil outlet pipe (115); a plunger (12) slidably disposed in the cavity; a sealing member (13) disposed in the cavity and used for sealing a gap between the plunger (12) and the cavity, and dividing the cavity into a first cavity portion (101) and a second cavity portion (102) which are independent of each other; a first end of the plunger (12) is located in the first cavity portion (101), and a second end is located in the second cavity portion (102); the first oil inlet pipe (111) and the first oil outlet pipe (112) are in communication with the first cavity portion (101); and the second oil inlet pipe (113), the second oil outlet pipe (114) and the third oil outlet pipe (115) are in communication with the second cavity portion (102); a leather cup (14), provided at the second end of the plunger (12), configured to allow the brake fluid in the second oil inlet pipe (113) to flow unidirectionally to the second chamber (102); The reset member (15) is configured to ensure that the plunger (12) always has a tendency to slide toward the first cavity (101).

2. The linkage valve according to claim 1, characterized in that: The valve body (11) comprises a valve main body (1101), a first connecting member (1102), a second connecting member (1103) and a third connecting member (1104); the cavity is provided on the valve main body (1101); the valve main body (1101) is provided with a first connecting hole (11011) connected to the first cavity (101) and a second connecting hole (11012) and a third connecting hole (11013) connected to the second cavity (102); wherein, The first connecting member (1102) is connected to the first connecting hole (11011), the first connecting member (1102) has a first flow channel (11021) connected to the first cavity (101), the first oil inlet pipe (111) and the first oil outlet pipe (112) are both provided on the first connecting member (1102) and are connected to the first flow channel (11021); The second connecting member (1103) is connected to the second connecting hole (11012), and the second connecting member (1103) has a second flow channel (11031) connected to the second cavity (102); the second oil inlet pipe (113) and the second oil outlet pipe (114) are both provided on the second connecting member (1103) and are connected to the second flow channel (11031); The third connecting member (1104) is connected to the third connecting hole (11013), and the third connecting member (1104) has a third flow channel (11041) connected to the second cavity (102). The third oil outlet pipe (115) is provided on the third connecting member (1104) and connected to the third flow channel (11041).

3. The linkage valve according to claim 2, characterized in that: The first connecting member (1102) includes a first oil inlet bolt, the first connecting hole (11011) is set as a screw hole, and the first oil inlet bolt is threadedly connected to the first connecting hole (11011); The second connecting member (1103) includes a second oil inlet bolt, the second connecting hole (11012) is configured as a screw hole, and the second oil inlet bolt is threadedly connected to the second connecting hole (11012); The third connecting member (1104) includes an oil outlet bolt, the third connecting hole (11013) is configured as a screw hole, and the oil outlet bolt is threadedly connected to the third connecting hole (11013).

4. The linkage valve according to claim 1, characterized in that: The cavity is provided with a limiting member (16), the limiting member (16) is arranged corresponding to the first cavity portion (101), and the limiting member (16) is suitable for abutting against the plunger (12) when the plunger (12) slides toward the first cavity portion (101) to an extreme position.

5. The linkage valve according to claim 4, characterized in that: The valve body (11) is provided with a connecting screw hole connected to the first cavity (101), and the limiting member (16) includes a limiting bolt, which is threadedly connected to the connecting screw hole.

6. The linkage valve according to claim 1, characterized in that: The reset member (15) comprises a spring, which is located in the second cavity (102), with a first end of the spring abutting against the second end of the plunger (12), and a second end of the spring abutting against the inner wall of the second cavity (102).

7. The linkage valve according to claim 1, characterized in that: A mounting groove (121) is provided on the peripheral wall of the plunger (12), and the leather cup (14) is fixed in the mounting groove (121).

8. The linkage valve according to claim 1, characterized in that: An embedding groove (103) is provided on the inner wall of the cavity, and the sealing member (13) is embedded in the embedding groove (103).

9. The linkage valve according to claim 1, characterized in that: The material of the sealing member (13) is rubber.

10. A linkage braking system, characterized in that: It comprises a first disc brake upper pump (2), a second disc brake upper pump (3), a front disc brake caliper (4), a rear disc brake caliper (5), and also comprises a linkage valve (1) according to any one of claims 1 to 9; wherein, The rear disc brake caliper (5) has an oil inlet pipe A (51) and an oil inlet pipe B (52), and the front disc brake caliper (4) has an oil inlet pipe C; The first disc brake upper pump (2) is connected to the first oil inlet pipe (111), and the first oil outlet pipe (112) is connected to the oil inlet pipe A (51); the second disc brake upper pump (3) is connected to the second oil inlet pipe (113), and the second oil outlet pipe (114) is connected to the oil inlet pipe B (52); and the third oil outlet pipe (115) is connected to the oil inlet pipe C.

Images