Brake master cylinder of center valve structure

Abstract

The utility model relates to the technical field of brake valves, and discloses a brake master cylinder of a center valve structure, which comprises a shell component, a brake component is mounted in the shell component, a convenient detachable connecting component is mounted at the tail end of the shell component, and a push rod component is mounted in the middle of the convenient detachable connecting component. According to the brake master valve, the structure of the brake master valve can be simple through the connecting assembly convenient and fast to disassemble, the traditional mode that a hole check ring and a valve seat are connected and fixed through threads, and the valve is limited is omitted, the structure is reliable and easy to assemble can be achieved through the assembly, and production efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of brake valves, specifically a brake master pump with a center valve structure. Background Technology

[0002] Brake valves, also known as air brake valves or hydraulic brake valves, are crucial for vehicle parking and provide technical support for smooth braking. The development of this technology is of paramount importance to automobile manufacturing and road traffic safety. Heavy-duty vehicles frequently use the main brake in conditions such as descending long slopes, resulting in a very high thermal load on the braking system. The system's inability to dissipate this heat quickly leads to excessively high temperatures and rapid wear of the brake drums and shoes, causing the main brake to lose some or all of its braking effectiveness. This severely impacts the continuous braking efficiency of the main brake system, thus affecting braking safety. Using auxiliary braking devices can reduce the frequency of main brake system use, mitigating problems such as excessively high brake temperatures, reduced efficiency, and severe wear caused by continuous brake use. Therefore, the application of auxiliary braking devices is becoming increasingly widespread. Auxiliary braking devices mainly include: engine brakes, exhaust brake valves, hydraulic retarders, and eddy current retarders. Exhaust brake valves, as the most cost-effective auxiliary braking device, are widely used in medium and heavy-duty trucks and buses. Electro-pneumatic exhaust brake devices (see...) Figure 1 It consists of three parts: an exhaust brake actuator, a control mechanism, and a fuel cut-off mechanism. The exhaust brake valve and exhaust brake cylinder are the actuators of the exhaust brake device. The exhaust brake switch, accelerator pedal, clutch pedal linkage switch, exhaust brake working indicator light, solenoid valve, and air pipe constitute the control mechanism, while the fuel cut-off cylinder and other components constitute the fuel cut-off mechanism.

[0003] Application number CN202221882778.6 discloses a dual-chamber parallel center valve structure brake master cylinder, including a pump body, spring assembly, return spring, hexagonal connector, combined washer, valve spring, steel ball, piston, sealing ring, bore retaining ring, dust cover, oil outlet connector, residual pressure valve sealing seat, and residual pressure valve spring. The parallel brake master cylinder provided by this utility model adopts a center valve structure design, which uses a valve-plane seal to effectively avoid friction between the sealing ring and the cylinder wall, thus preventing impact on product lifespan. This structure uses parallel dual working chambers, allowing both chambers to achieve simultaneous or independent pressure build-up. Compared to tandem brake master cylinders, this structure significantly reduces the overall unloaded space. The pump body is made of cast aluminum alloy, meeting customer requirements for lightweight construction.

[0004] Although the aforementioned utility model employs a central valve structure design within the parallel brake master cylinder, this structure uses a valve and a flat seal to effectively prevent friction between the sealing ring and the cylinder wall, thus avoiding impacts on product lifespan. This structure utilizes parallel dual working chambers, allowing both chambers to achieve simultaneous or independent pressure build-up. Compared to tandem brake master cylinders, this structure significantly reduces the overall unloaded space. The pump body is made of cast aluminum alloy to meet customer lightweight requirements. However, a drawback is that the traditional connection method makes the installation and use of the aforementioned device relatively cumbersome.

[0005] Therefore, it is necessary to set up a convenient disassembly and connection component, which can simplify the structure of the brake master valve, eliminate the traditional hole retaining ring, valve seat fixed by threaded connection, and limit valve, etc. This component can achieve a reliable structure, easy assembly, and effectively improve production efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a brake master cylinder with a center valve structure to solve the problems mentioned in the background art.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] This utility model is a brake master cylinder with a center valve structure, including a housing assembly, a brake assembly is installed inside the housing assembly, and a convenient disassembly connection assembly is installed at its end, and a push rod assembly is installed in the middle of the convenient disassembly connection assembly.

[0009] Furthermore, the housing assembly includes an outer shell, with an oil inlet port one installed on one side of the top of the outer shell and an oil inlet port two opened on the other side. A brake cavity is opened at the bottom corresponding to the oil inlet port two, and a brake oil pipe is opened at the bottom of the brake cavity.

[0010] Furthermore, the braking assembly includes a spring, a piston is mounted on the rear side of the spring, a connecting rod is mounted on the rear side of the piston, a piston is mounted on the rear side of the connecting rod, a spring is mounted on the rear side of the piston, and a limit compression block is mounted on the middle end of the spring.

[0011] Furthermore, the easy-to-disassemble connection assembly includes a rubber ring, a sealing ring is installed in the middle of the outer side of the rubber ring, and a hinged gasket is installed at its end. Disassembly clamps are installed on the outer sides of both ends of the hinged gasket.

[0012] Furthermore, the push rod assembly includes a push rod tube, the inside of which is provided with a connecting groove, and a limit mounting groove is installed in the middle of its rear side.

[0013] Furthermore, a limiting annular groove is formed on the inner wall of the end of the outer casing.

[0014] This utility model has the following beneficial effects:

[0015] (1) This utility model is a brake master pump with a central valve structure. By setting a convenient disassembly and connection component, the structure of its brake master valve can be simplified. The traditional hole retaining ring, valve seat fixed by thread connection and limit valve are eliminated. The component can achieve a reliable structure, easy assembly, and can effectively improve production efficiency.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a brake master pump with a center valve structure according to this utility model.

[0019] Figure 2 This is a schematic diagram of the brake assembly structure of a brake master cylinder with a center valve structure according to this utility model;

[0020] Figure 3 This is a schematic diagram of the front part of a brake master pump with a center valve structure according to the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of a convenient disassembly and connection assembly for a brake master cylinder with a center valve structure according to this utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] In the diagram: 1. Housing assembly; 2. Braking assembly; 3. Easy-to-disassemble connection assembly; 4. Push rod assembly; 101. Housing; 102. Oil inlet port one; 103. Oil inlet port two; 104. Braking chamber; 105. Brake oil pipe; 201. Spring one; 202. Piston one; 203. Connecting rod; 204. Piston two; 205. Spring two; 206. Limiting compression block; 301. Rubber ring; 302. Sealing ring; 303. Retractable ring gasket; 304. Disassembly clamp; 401. Push rod tube; 402. Connecting groove; 403. Limiting mounting groove; 1011. Limiting ring groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 4 As shown, this utility model is a brake master cylinder with a center valve structure, including a housing assembly 1, a brake assembly 2 installed inside the housing assembly 1, and a convenient disassembly connection assembly 3 installed at its end, and a push rod assembly 4 installed in the middle of the convenient disassembly connection assembly 3.

[0026] The convenient disassembly and connection component 3 simplifies the structure of the brake master valve, eliminating the need for traditional methods such as retaining rings, threaded connections to fix valve seats, and limit valves. This component ensures a reliable structure, easy assembly, and effectively improves production efficiency.

[0027] The housing assembly 1 includes a housing 101. An oil inlet 102 is installed on one side of the top of the housing 101, and an oil inlet 103 is provided on the other side. A brake chamber 104 is provided at the bottom corresponding to the oil inlet 103, and a brake oil pipe 105 is provided at the bottom of the brake chamber 104. Before using this device, first connect the brake oil reservoir to the top of the oil inlet 102 and the oil inlet 103, and then connect the brake oil pipe 105 at the bottom of the device to the relevant device on the car to start using it.

[0028] The braking assembly 2 includes a spring 201, a piston 202 mounted on the rear side of the spring 201, a connecting rod 203 mounted on the rear side of the piston 202, a piston 204 mounted on the rear side of the connecting rod 203, a spring 205 mounted on the rear side of the piston 204, and a limiting compression block 206 mounted at the middle end of the spring 205. When braking is not in use, brake fluid is supplied to the brake chamber 104 through the brake fluid reservoir via the inlet 102 and the inlet 103, filling the chamber. When braking is required, the brake pedal is pressed, which applies a force to the push rod assembly 4. At this time, the pistons 202 and 204 seal the internal chamber and compress it, then the braking action is achieved through the brake fluid pipe 105 at the bottom.

[0029] The easy-to-disassemble connecting component 3 includes a rubber ring 301, a sealing ring 302 is installed in the middle of the outer side of the rubber ring 301, and a movable ring gasket 303 is installed at its end. The movable ring gasket 303 has disassembly clamps 304 installed on both outer sides. When installing the push rod component 4, the push rod tube 401 is installed inside the limiting ring groove 1011 through the movable ring gasket 303, which further realizes the limiting installation and facilitates the work. Finally, when it is necessary to replace or disassemble, the disassembly clamps 304 need to be squeezed inward to complete the disassembly work.

[0030] The push rod assembly 4 includes a push rod tube 401, which has a connecting groove 402 inside and a limiting mounting groove 403 installed in the middle of its rear side.

[0031] A limiting annular groove 1011 is formed on the inner wall of the end of the outer casing 101.

[0032] Before using this device, first connect the brake fluid reservoir to the top of the first inlet 102 and the second inlet 103. Then connect the brake fluid line 105 at the bottom to the relevant device on the car to start use. When installing the push rod assembly 4, the push rod tube 401 is installed inside the limiting ring groove 1011 through the movable ring gasket 303, which further realizes the limiting installation and facilitates the work. Finally, when it is necessary to replace or disassemble, the disassembly clamp 304 needs to be squeezed inward to complete the disassembly work. When not braking, the brake fluid is introduced into the brake chamber 104 through the brake fluid reservoir through the first inlet 102 and the second inlet 103 and filled. When braking is required, the push rod assembly 4 is pushed inward by stepping on the brake. At this time, the internal cavity is closed by the piston 1 202 and the piston 2 204 and squeezed, and then the brake is transmitted through the brake fluid line 105 at the bottom to achieve the braking work.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A brake master cylinder with a center valve structure, comprising a housing assembly (1), characterized in that: The housing assembly (1) has a braking assembly (2) installed inside, and a convenient disassembly connection assembly (3) installed at its end. A push rod assembly (4) is installed in the middle of the convenient disassembly connection assembly (3).

2. The brake master cylinder with a center valve structure according to claim 1, characterized in that: The housing assembly (1) includes a housing (101), with an oil inlet port one (102) installed on one side of the top of the housing (101) and an oil inlet port two (103) opened on the other side. A brake chamber (104) is opened at the bottom corresponding to the oil inlet port two (103), and a brake oil pipe (105) is opened at the bottom of the brake chamber (104).

3. The brake master cylinder with a center valve structure according to claim 1, characterized in that: The braking assembly (2) includes a spring (201), a piston (202) is mounted on the rear side of the spring (201), a connecting rod (203) is mounted on the rear side of the piston (202), a piston (204) is mounted on the rear side of the connecting rod (203), a spring (205) is mounted on the rear side of the piston (204), and a limit compression block (206) is mounted on the middle end of the spring (205).

4. The brake master cylinder with a center valve structure according to claim 1, characterized in that: The convenient disassembly connection assembly (3) includes a rubber ring (301), a sealing ring (302) is installed in the middle of the outer side of the rubber ring (301), and a movable ring gasket (303) is installed at its end. Disassembly clamps (304) are installed on the outer sides of both ends of the movable ring gasket (303).

5. A brake master cylinder with a center valve structure according to claim 1, characterized in that: The push rod assembly (4) includes a push rod tube (401), the push rod tube (401) has a connecting groove (402) inside, and a limit mounting groove (403) is installed in the middle of its rear side.

6. A brake master cylinder with a center valve structure according to claim 2, characterized in that: A limiting annular groove (1011) is provided on the inner wall of the end of the outer shell (101).

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