Brake chamber with dustproof function

Abstract

The utility model relates to a brake chamber with a dustproof function, which comprises an air chamber shell, an end cover is arranged on the air chamber shell, the air chamber shell is fixedly connected with the end cover through a hoop, a diaphragm is further arranged in the hoop and between the air chamber shell and the end cover, one side, far away from the end cover, of the diaphragm is fixedly connected with a pressing plate, and the end cover is fixedly connected with the pressing plate. The pressing plate is fixedly connected with the connecting fork through the push rod, the connecting fork is located outside the air chamber shell, a reset spring is arranged between the pressing plate and the air chamber shell, an air inlet is formed in the end cover, and the air inlet is sleeved with a filtering device. The brake air chamber is reasonable in structure, air entering the brake air chamber keeps high cleanliness through the three layers of filter screens in the filter device, the possibility that parts in the brake air chamber are polluted is reduced, and the service life of the brake air chamber can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of brake air chambers, in particular to a brake air chamber with a dustproof function. Background Art

[0002] The brake chamber is a device composed of an air inlet, an end cover, a diaphragm, a pressure plate, a return spring, a housing, a push rod, a connecting fork, a clamp and bolts. When the car brakes, air enters the brake chamber from the air inlet, squeezes the diaphragm and drives the push rod and the connecting fork to extend forward, braking the car through the brake drum. The existing brake chamber air inlet is usually directly connected to the air. When in use, impurities in the air will enter the brake chamber, affecting the service life of the brake chamber. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a brake air chamber with a dustproof function.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a brake air chamber with a dustproof function, comprising an air chamber shell, an end cover is arranged on the air chamber shell, the air chamber shell and the end cover are fixedly connected by a clamp, a diaphragm is also arranged inside the clamp and between the air chamber shell and the end cover, a pressure plate is fixedly connected to the side of the diaphragm away from the end cover, the pressure plate is fixedly connected to a connecting fork through a push rod, the connecting fork is located outside the air chamber shell, a return spring is arranged between the pressure plate and the air chamber shell, an air inlet is opened on the end cover, and a filter device is sleeved on the air inlet. When in use, the filter device filters impurities in the air to reduce the possibility of contamination of internal components of the brake air chamber, which can effectively improve the service life of the brake air chamber.

[0005] Preferably, the filtering device comprises a filter cover fixedly connected to the air inlet by a thread, a replaceable activated carbon filter is arranged between the air inlet and the filter cover, a filter sleeve is arranged on the outer cover of the filter cover, and a filter plate and a non-woven filter are arranged in sequence on the side of the filter sleeve away from the air inlet.

[0006] Preferably, grooves are provided on both sides of the air inlet, and a locking mechanism is provided in the filter sleeve for use with the grooves. The locking mechanism includes a clamp and a pressing device fixed in the filter sleeve, and a heart-shaped fixing block is provided in the clamp. The bottom of the heart-shaped fixing block is a first bevel offset from the central axis of the clamp, and a second bevel opposite to the first bevel is provided above the heart-shaped fixing block.

[0007] Preferably, the pressing device includes a pressure block connected to the air chamber housing through a spring, the pressure block is fixedly connected to the locking buckle through a connecting rod, the locking buckle is located below the fixture, and an L-shaped buckle is provided on the pressure block, one end of the L-shaped buckle is rotatably connected to the pressure block, and the other end extends into the fixture.

[0008] Preferably, limiting blocks are fixedly connected to both sides of the air inlet, and a limiting groove for use with the limiting blocks is provided in one side of the filter sleeve close to the air inlet.

[0009] Preferably, a telescopic sleeve is provided on one end of the push rod extending out of the air chamber housing, so as to prevent dust from entering the interior of the air chamber housing through the gap between the push rod and the air chamber housing when the push rod is pushed by the pressure plate.

[0010] The beneficial effect of the utility model is that the air entering the brake air chamber is kept at a high level of cleanliness through the three-layer filter in the filter device, the possibility of contamination of the internal components of the brake air chamber is reduced, and the service life of the brake air chamber is effectively improved. In addition, the locking device can realize quick and convenient installation and removal of the filter sleeve, which is convenient for subsequent cleaning, and the activated carbon filter is pressed on the air inlet through the filter cover, and the activated carbon filter can be quickly replaced by unscrewing the filter cover. The telescopic sleeve can effectively prevent dust from entering the interior of the air chamber shell from the gap between the push rod and the air chamber shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a cross-sectional view of the utility model;

[0013] Figure 2 It is a cross-sectional view of the filter device of the utility model;

[0014] Figure 3 It is a cross-sectional exploded view of the filter device of the utility model;

[0015] Figure 4 It is the front view of the clamp of the utility model;

[0016] Figure 5 It is a front view of the pressing device of the utility model;

[0017] Figure 6 It is a left side view of the L-shaped buckle of the utility model;

[0018] Figure 7 It is a left side view of the air inlet of the utility model;

[0019] In the figure, 1. air chamber shell; 2. end cover; 3. clamp; 4. diaphragm; 5. pressure plate; 6. push rod; 7. connecting fork; 8. reset spring; 9. air inlet; 10. filter device; 11. filter cover; 12. activated carbon filter; 13. filter plate; 14. non-woven filter; 15. groove; 16. locking mechanism; 17. fixture; 18. first bevel; 19. pressure block; 20. connecting rod; 21. locking buckle; 22. L-shaped buckle; 23. heart-shaped fixing block; 24. second bevel; 25. pressing device; 26. telescopic sleeve; 27. filter sleeve; 28. limit block; 29. ​​limit groove. DETAILED DESCRIPTION

[0020] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0021] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0022] like Figure 1-7 A brake air chamber with a dustproof function shown in the figure includes an air chamber shell 1, an end cover 2 is provided on the air chamber shell 1, the air chamber shell 1 and the end cover 2 are fixedly connected by a clamp 3, a diaphragm 4 is also provided inside the clamp 3 and between the air chamber shell 1 and the end cover 2, a pressure plate 5 is fixedly connected to the side of the diaphragm 4 away from the end cover 2, the pressure plate 5 is fixedly connected to a connecting fork 7 through a push rod 6, the connecting fork 7 is located outside the air chamber shell 1, a return spring 8 is provided between the pressure plate 5 and the air chamber shell 1, an air inlet 9 is opened on the end cover 2, and a filter device 10 is sleeved on the air inlet 9. When in use, the filter device 10 filters impurities in the air to reduce the possibility of contamination of the internal components of the brake air chamber, which can effectively improve the service life of the brake air chamber.

[0023] The filtering device 10 includes a filter cover 11 fixedly connected to the air inlet 9 by threads, a replaceable activated carbon filter 12 is arranged between the air inlet 9 and the filter cover 11, and a filter sleeve 27 is arranged on the outer cover of the filter cover 11. A filter plate 13 and a non-woven filter 14 are arranged in sequence on the side of the filter sleeve 27 away from the air inlet 9.

[0024] Grooves 15 are provided on both sides of the air inlet 9, and a locking mechanism 16 for use with the grooves 15 is provided in the filter sleeve 27. The locking mechanism 16 includes a clamp 17 and a pressing device 25 fixedly arranged in the filter sleeve 27. A heart-shaped fixing block 23 is provided in the clamp 17, and the bottom of the heart-shaped fixing block 23 is a first bevel 18 offset from the central axis of the clamp 17, and a second bevel 24 with an angle opposite to the first bevel 18 is provided above the heart-shaped fixing block 23.

[0025] The pressing device 25 includes a pressing block 19 connected to the air chamber housing 1 through a spring. The pressing block 19 is fixedly connected to a locking buckle 21 through a connecting rod 20. The locking buckle 21 is located below the fixture 17. An L-shaped buckle 22 is provided on the pressing block 19. One end of the L-shaped buckle 22 is rotatably connected to the pressing block 19, and the other end extends into the fixture 17.

[0026] The two sides of the air inlet 9 are fixedly connected with the limiting blocks 28 , and the filter sleeve 27 is provided with a limiting groove 29 for use with the limiting blocks 28 on one side close to the air inlet 9 .

[0027] A telescopic sleeve 26 is sleeved on one end of the push rod 6 extending out of the air chamber housing 1 , so that when the push rod 6 is pushed by the pressing plate 5 , dust is prevented from entering the interior of the air chamber housing 1 through the gap between the push rod 6 and the air chamber housing 1 . Specific embodiments

[0028] First, place the activated carbon filter 12 in the filter cover 11, and fix the filter cover 11 to the air inlet 9 through threads, then put the filter sleeve 27 on the air inlet 9 and the filter cover 11, and make the locking mechanism 16 correspond to the position of the groove 15 through the action of the limit block 28 and the limit groove 29. Press the pressing block 19, and the L-shaped buckle 22 will move to the upper right corner under the action of the first bevel 18. When the pressing block 19 is released, the L-shaped buckle 22 will fall to the notch of the heart-shaped fixing block 23. At this time, the locking buckle 21 is driven by the connecting rod 20 to extend into the groove 15 to complete the locking work. Press the pressing block 19 again, and the L-shaped buckle 22 will move to the upper left corner under the action of the second bevel 24. Release the pressing block 19, and the L-shaped buckle will return to the starting point under the action of the spring, and drive the locking buckle 21 to retreat. At this time, the filter sleeve 27 can be removed.

[0029] This design is ingenious. The three-layer filter in the filter device can keep the air entering the brake air chamber at a high level of cleanliness, reduce the possibility of contamination of the internal components of the brake air chamber, and effectively increase the service life of the brake air chamber. In addition, the locking device can realize quick and convenient installation and removal of the filter sleeve, which is convenient for subsequent cleaning. The activated carbon filter is pressed onto the air inlet through the filter cover, and the activated carbon filter can be quickly replaced by unscrewing the filter cover. The telescopic sleeve can effectively prevent dust from entering the interior of the air chamber shell through the gap between the push rod and the air chamber shell.

[0030] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A brake air chamber with dustproof function, characterized in that: The invention comprises an air chamber shell (1), an end cover (2) being provided on the air chamber shell (1), the air chamber shell (1) and the end cover (2) being fixedly connected via a clamp (3), a diaphragm (4) being provided inside the clamp (3) and between the air chamber shell (1) and the end cover (2), a pressure plate (5) being fixedly connected to the side of the diaphragm (4) away from the end cover (2), the pressure plate (5) being fixedly connected to a connecting fork (7) via a push rod (6), the connecting fork (7) being located outside the air chamber shell (1), and a reset plate (5) being provided between the pressure plate (5) and the air chamber shell (1). A spring (8) is provided on the end cover (2), an air inlet (9) is provided on the air inlet (9), a filter device (10) is sleeved on the air inlet (9), the filter device (10) comprises a filter cover (11) fixedly connected to the air inlet (9) by means of a thread, a replaceable activated carbon filter (12) is provided between the air inlet (9) and the filter cover (11), a filter sleeve (27) is provided on the outer sleeve of the filter cover (11), and a filter plate (13) and a non-woven filter (14) are sequentially provided on a side of the filter sleeve (27) away from the air inlet (9).

2. The brake air chamber with dustproof function according to claim 1, characterized in that: Grooves (15) are formed on both sides of the air inlet (9), and a locking mechanism (16) for use with the grooves (15) is arranged in the filter sleeve (27). The locking mechanism (16) comprises a clamp (17) and a pressing device (25) fixedly arranged in the filter sleeve (27). A heart-shaped fixing block (23) is arranged in the clamp (17), and the bottom of the heart-shaped fixing block (23) is a first bevel (18) offset from the central axis of the clamp (17), and a second bevel (24) is arranged above the heart-shaped fixing block (23) at an angle opposite to the first bevel (18).

3. The brake air chamber with dustproof function according to claim 2, characterized in that: The pressing device (25) comprises a pressing block (19) connected to the air chamber housing (1) via a spring, the pressing block (19) being fixedly connected to a locking buckle (21) via a connecting rod (20), the locking buckle (21) being located below the clamp (17), and an L-shaped buckle (22) being provided on the pressing block (19), one end of the L-shaped buckle (22) being rotatably connected to the pressing block (19), and the other end of the L-shaped buckle (22) extending into the clamp (17).

4. The brake air chamber with dustproof function according to claim 1, characterized in that: Limit blocks (28) are fixedly connected to both sides of the air inlet (9), and a limit groove (29) for use with the limit block (28) is formed in one side of the filter sleeve (27) close to the air inlet (9).

5. The brake air chamber with dustproof function according to claim 1, characterized in that: A telescopic sleeve (26) is sleeved on one end of the push rod (6) extending out of the air chamber housing (1).

Images