Leakage-proof disc brake

Abstract

The utility model discloses a leakage-proof disc brake, and belongs to the technical field of automobile brakes. A leakage-proof disc brake comprises a brake body, a left brake pad, a right brake pad, an oil cylinder, a piston rod, a brake disc and a sealing assembly. One end of the piston rod movably penetrates through the oil cylinder, and the other end of the piston rod is fixedly connected with the right brake pad; the piston rod drives the right brake pad to move; the left brake pad is fixedly mounted at the left end of the inner wall of the brake body The brake disc is arranged between the left brake pad and the right brake pad; the output end of the sealing assembly abuts against the inner wall of the oil cylinder to form sealing. Due to the fact that the sealing assembly is arranged, the sealing performance between the piston rod and the oil cylinder can be improved, and the situation that oil leaks between the oil cylinder and the piston rod is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile brakes, and more specifically relates to a leak-proof disc brake. Background Art

[0002] The rotating element in the friction pair of a disc brake is a metal disc that works on the end surface, called a brake disc. The friction element clamps the brake disc from both sides to produce braking. There are many structural forms of fixed elements. Generally speaking, disc brakes can be divided into two categories: caliper disc type and full disc type.

[0003] Generally, in a disc brake, the oil in the cylinder drives the piston rod to move, which in turn drives the left and right friction plates to move toward each other, thereby clamping the brake disc and achieving the braking effect.

[0004] However, in traditional disc brakes, there is no sealing element when the piston rod moves in the oil cylinder. After repeated movement, the piston rod will wear out, resulting in oil leakage, which in turn affects the braking effect of the brake and increases safety hazards. Therefore, a leak-proof disc brake is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a leak-proof disc brake, which can improve the sealing performance between the piston rod and the oil cylinder, thereby preventing oil leakage.

[0006] The utility model discloses a leak-proof disc brake, comprising a brake body, a left brake pad, a right brake pad, an oil cylinder, a piston rod, a brake disc and a sealing component; the oil cylinder is fixedly installed on the outer wall of the right end of the brake body, one end of the piston rod movably penetrates the oil cylinder, and the other end is fixedly connected with the right brake pad; the piston rod drives the right brake pad to move; the left brake pad is fixedly installed on the left end of the inner wall of the brake body; the brake disc is arranged between the left brake pad and the right brake pad; the sealing component is arranged on the piston rod, and the output end of the sealing component abuts against the inner wall of the oil cylinder to form a seal.

[0007] As a further improvement of the utility model, the sealing assembly includes a pressure plate, a sealing ring, a sleeve, a threaded rod and a locking nut; an oil chamber is provided in the oil cylinder; and an oil inlet communicating with the oil chamber is provided at the right end of the oil cylinder, and a piston hole communicating with the oil chamber is provided at the left end of the oil cylinder; the right end of the piston rod passes through the piston hole and is installed with a connecting plate; the sleeve is sleeved on the piston rod; the pressure plate is provided with a right end of a connecting plate, and a connecting rod is provided on the left end face of the pressure plate, the connecting rod movably passes through the connecting plate and is fixedly connected to the right end face of the sleeve; the two ends of the sealing ring are respectively fixedly connected to the outer wall of the connecting plate and the outer wall of the pressure plate, and the moving pressure plate drives the sealing ring to compress and deform, and the outer wall of the sealing ring abuts against the inner wall of the oil chamber to form a seal; the threaded rod is fixedly provided on the left end face of the sleeve, a fixing plate is provided on the piston rod, the threaded rod movably passes through the fixing plate, and is fixedly connected with the locking nut.

[0008] As a further improvement of the utility model, a first sealing ring is arranged on the inner wall of the sleeve, and the first sealing ring abuts against the outer wall of the piston rod to form a seal.

[0009] As a further improvement of the utility model, a second sealing ring is arranged on the outer wall of the sleeve, and the second sealing ring abuts against the inner wall of the piston hole to form a seal.

[0010] As a further improvement of the utility model, the middle part of the sealing ring bulges outwards in a natural state.

[0011] As a further improvement of the present invention, friction plates are provided on the inner end surfaces of the left brake pad and the right brake pad.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] 1. The utility model is provided with a sealing assembly, which can improve the sealing between the piston rod and the oil cylinder and avoid the leakage of oil from between the oil cylinder and the piston rod.

[0014] 2. The utility model drives the sleeve, the connecting rod and the pressure plate to move leftward by tightening the locking nut, and then cooperates with the connecting plate to compress and deform the sealing ring. The compressed and deformed sealing ring can bulge outward, thereby forming a seal against the inner wall of the oil chamber, thereby achieving the purpose of preventing leakage; after long-term use, even if leakage occurs, it is only necessary to tighten the locking nut again to drive the sealing ring to continue to compress and deform, so that the sealing ring can be against the inner wall of the oil chamber to form a seal. The operation is simple, the service life is long, and it is also convenient for subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 This is a structural schematic diagram of the sealing component of the utility model;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the sealing component of the utility model.

[0019] Description of the numbers in the figure:

[0020] 1. Brake body; 2. Left brake pad; 3. Right brake pad; 4. Oil cylinder; 401. Oil chamber; 402. Oil inlet; 403. Piston hole; 5. Piston rod; 501. Connecting plate; 502. Fixing plate; 6. Brake disc; 7. Sealing assembly; 701. Pressure plate; 702. Sealing ring; 703. Sleeve; 704. Threaded rod; 705. Locking nut; 706. Connecting rod; 8. First sealing ring; 9. Second sealing ring; 10. Friction plate. DETAILED DESCRIPTION

[0021] Specific embodiment 1: Please refer to Figure 1-4 A leakproof disc brake comprises a brake body 1, a left brake pad 2, a right brake pad 3, an oil cylinder 4, a piston rod 5, a brake disc 6 and a sealing assembly 7; the oil cylinder 4 is fixedly installed on the outer wall of the right end of the brake body 1, one end of the piston rod 5 movably penetrates the oil cylinder 4, and the other end is fixedly connected to the right brake pad 3; the piston rod 5 drives the right brake pad 3 to move; the left brake pad 2 is fixedly installed on the left end of the inner wall of the brake body 1 by welding; the brake disc 6 is arranged between the left brake pad 2 and the right brake pad 3; and the inner end surfaces of the left brake pad 2 and the right brake pad 3 are both provided with friction pads 10; the right brake pad 3 is driven to move by the piston rod 5, and the brake disc 6 can be clamped in cooperation with the left brake pad 2 to achieve the purpose of braking;

[0022] The sealing assembly 7 includes a pressure plate 701, a sealing ring 702, a sleeve 703, a threaded rod 704 and a locking nut 705; an oil chamber 401 is provided in the oil cylinder 4; and an oil inlet 402 communicating with the oil chamber 401 is provided at the right end of the oil cylinder 4, and a piston hole 403 communicating with the oil chamber 401 is provided at the left end of the oil cylinder 4; the right end of the piston rod 5 passes through the piston hole 403 and is installed with a connecting plate 501; the sleeve 703 is sleeved on the piston rod 5; the pressure plate 701 is provided with a right end of the connecting plate 501, and a connecting rod 706 is provided on the left end face of the pressure plate 701, and the connecting rod 706 movably passes through the connecting plate 501 and is fixedly connected to the right end face of the sleeve 703; the two ends of the sealing ring 702 are respectively connected to the outer wall of the connecting plate 501 and the outer wall of the pressure plate 701, and the moving pressure plate 701 drives the sealing ring 702 to compress and deform, and the sealing ring 702 The outer wall abuts against the inner wall of the oil chamber 401 to form a seal; the threaded rod 704 is fixedly arranged on the left end face of the sleeve 703, and a fixing plate 502 is arranged on the piston rod 5. The threaded rod 704 movably penetrates the fixing plate 502, and is fixedly connected with a locking nut 705; by tightening the locking nut 705, the sleeve 703, the connecting rod 706 and the pressure plate 701 are driven to move to the left, and then the sealing ring 702 can be compressed and deformed in cooperation with the connecting plate 501, and the compressed and deformed sealing ring 702 can bulge outward, thereby abutting against the inner wall of the oil chamber 401 to form a seal, thereby achieving the purpose of preventing leakage; and the sealing ring 702 bulges outward in the middle part in a natural state; therefore, when the sealing ring 702 is compressed, it can guide the outward deformation to avoid the situation where the sealing ring 702 does not abut against the inner wall of the oil chamber 401. At the same time, a first sealing ring 8 is arranged on the inner wall of the sleeve 703, and the first sealing ring 8 abuts against the outer wall of the piston rod 5 to form a seal; a second sealing ring 9 is arranged on the outer wall of the sleeve 703, and the second sealing ring 9 abuts against the inner wall of the piston hole 403 to form a seal; through the first sealing ring 8 and the second sealing ring 9, the problem of oil leakage from the piston hole 403 can be avoided, thereby further ensuring the leakage-proof effect of the device.

[0023] Working principle: In the utility model, during installation, by tightening the locking nut 705, the threaded rod 704, the sleeve 703, the connecting rod 706 and the pressure plate 701 can be driven to move to the left, so that the connecting plate 501 can compress the sealing ring 702, so that the sealing ring 702 is compressed and deformed outward, thereby forming a seal with the inner wall of the oil chamber 401, which can ensure that the oil in the oil chamber 401 will not leak. At the same time, the deformation elastic force of the sealing ring 702 can support the sealing ring 702 to always be against the inner wall of the oil chamber 401, further ensuring the sealing performance of the device and improving the service life of the brake.

[0024] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A leakproof disc brake, characterized in that: The brake device comprises a brake body (1), a left brake pad (2), a right brake pad (3), an oil cylinder (4), a piston rod (5), a brake disc (6) and a sealing assembly (7); the oil cylinder (4) is fixedly mounted on the outer wall of the right end of the brake body (1), and one end of the piston rod (5) is movable through the outer wall of the right end of the brake body (1). The piston rod (5) is inserted into the oil cylinder (4), and the other end is fixedly connected to the right brake pad (3); the piston rod (5) drives the right brake pad (3) to move; the left brake pad (2) is fixedly installed on the left end of the inner wall of the brake body (1); the brake disc (6) is arranged between the left brake pad (2) and the right brake pad (3); the sealing component (7) is arranged on the piston rod (5), and the output end of the sealing component (7) abuts against the inner wall of the oil cylinder (4) to form a seal.

2. A leakproof disc brake according to claim 1, characterized in that: The sealing assembly (7) comprises a pressure plate (701), a sealing ring (702), a sleeve (703), a threaded rod (704) and a locking nut (705); an oil chamber (401) is arranged in the oil cylinder (4); an oil inlet (402) communicating with the oil chamber (401) is arranged at the right end of the oil cylinder (4); a piston hole (403) communicating with the oil chamber (401) is arranged at the left end of the oil cylinder (4); the right end of the piston rod (5) passes through the piston hole (403) and is installed with a connecting plate (501); the sleeve (703) is sleeved on the piston rod (5); the pressure plate (701) is provided with a right end of the connecting plate (501), and a left end surface of the pressure plate (701) is provided with a A connecting rod (706) is provided, and the connecting rod (706) movably passes through the connecting plate (501) and is fixedly connected to the right end surface of the sleeve (703); the two ends of the sealing ring (702) are respectively fixedly connected to the outer wall of the connecting plate (501) and the outer wall of the pressure plate (701), and the moving pressure plate (701) drives the sealing ring (702) to be compressed and deformed, and the outer wall of the sealing ring (702) and the inner wall of the oil chamber (401) are abutted to form a seal; the threaded rod (704) is fixedly arranged on the left end surface of the sleeve (703), and a fixing plate (502) is provided on the piston rod (5), and the threaded rod (704) movably passes through the fixing plate (502), and is fixedly connected with a locking nut (705).

3. A leakproof disc brake according to claim 2, characterized in that: A first sealing ring (8) is provided on the inner wall of the sleeve (703), and the first sealing ring (8) abuts against the outer wall of the piston rod (5) to form a seal.

4. The leakproof disc brake according to claim 2, characterized in that: The outer wall of the sleeve (703) is provided with a second sealing ring (9), and the second sealing ring (9) abuts against the inner wall of the piston hole (403) to form a seal.

5. The leakproof disc brake according to claim 1, characterized in that: The sealing ring (702) has a central portion that bulges outward in a natural state.

6. The leakproof disc brake according to claim 1, characterized in that: The inner end surface of the left brake pad (2) and the inner end surface of the right brake pad (3) are both provided with friction pads (10).

Images