Integrated vulcanized seal for wedge brake self-adjuster

Abstract

This utility model discloses an integrated vulcanized sealing seat for a wedge brake self-adjuster, including a support frame. A vulcanized sealing ring is provided on the top of the support frame, and an oil seal spring is provided at the edge of the top of the vulcanized sealing ring. This utility model, by assembling a vulcanized sealing ring on the top of the support frame, provides good toughness and tensile strength after vulcanization, suitable for supporting and adjusting the brake. The top of the outer side of the vulcanized sealing ring is provided with an oil seal spring, ensuring high sealing performance and preventing external impurities from entering. An integrally formed auxiliary leak-proof outer ring is sleeved and engaged on the outer sides of the first and second mounting rings, providing auxiliary sealing. An auxiliary sealing ring is provided on the inner side of the vulcanized sealing ring, creating a sealed inner and outer connection that is not easily detached or leaking. This results in excellent sealing performance and anti-detachment capabilities, stable interference fit, improved preload, and automatic compensation of interference fit even with continuous wear of the sealing ring, demonstrating excellent durability and protective properties.

Description

Technical Field

[0001] This utility model relates to the field of wedge brake technology, and in particular to an integrated vulcanized sealing seat for a wedge brake self-adjuster. Background Technology

[0002] In China, wedge brakes are mainly used in heavy vehicles and construction machinery, and most adopt an air brake structure. For wedge brakes, the brake chamber and brake cylinder are connected by threads or end flanges, providing pneumatic power to the brake assembly. The self-adjusting mechanism is the core component of the wedge brake; it is responsible for transmitting the vehicle's braking force to the brake drum and automatically eliminating excessive clearance when wear causes excessive clearance between the brake drum and friction pads, maintaining a constant braking force. In vehicle braking systems, wedge brakes are widely used due to their compact structure and large braking torque, especially in the medium and heavy-duty truck sector.

[0003] The brake chamber is connected to the self-adjusting push rod, applying braking force to the brake. A sealing seat is located at the push rod, consisting of a metal frame and a moving and a stationary sealing ring, preventing impurities from the air chamber direction from entering the self-adjusting unit. Existing sealing seats use an interference fit with the metal frame. The metal frame is made of thin steel sheet, stamped and formed, with flanges to prevent the sealing rings from falling off. There is linear movement between the push rod and the sealing seat. Over time, this causes the grease on the sealing rings to thin or even disappear, leading to increased friction. If this friction exceeds the bonding force between the sealing ring and the frame, the sealing ring will fall off, causing seal failure. The sealing seat is typically installed inside the brake drum at the rear axle wheel end of the vehicle, in a harsh working environment. If external impurities enter the self-adjusting unit, they will cause grease failure, movement stagnation, and ultimately, abnormal or even complete failure of the self-adjusting unit, posing a significant safety hazard to the vehicle. The sealing seat's anti-fall-off and sealing performance are inadequate. Therefore, we propose using an integrated vulcanized sealing seat for the wedge brake self-adjusting unit to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a waterproof structure for the pressure gauge movement.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An integrated vulcanized sealing seat for a wedge brake self-adjuster includes a support frame, and a vulcanized sealing ring is provided on the top of the support frame;

[0007] An oil seal spring is provided at the top edge of the vulcanized sealing ring, a first mounting ring is provided at the bottom of the outer side of the vulcanized sealing ring, a second mounting ring is provided at the top of the outer side of the bearing frame, and an integrally formed auxiliary leak-proof outer ring is sleeved and engaged on the outer sides of the first mounting ring and the second mounting ring.

[0008] The bottom of the vulcanized sealing ring is fitted onto the outer top of the support frame, and an auxiliary sealing ring is provided at the bottom of the inner side of the vulcanized sealing ring, which is fitted onto the top of the inner side of the support frame.

[0009] Preferably, the top of the supporting frame is provided with a right-angle mounting ring, the bottom of the vulcanized sealing ring is sleeved on the outside of the right-angle mounting ring, and the auxiliary sealing ring is filled and sleeved on the inside of the right-angle mounting ring, and the supporting frame and the right-angle mounting ring are an integral unit.

[0010] Preferably, the vulcanized sealing ring and the auxiliary sealing ring are an integral unit and are made of vulcanized rubber, while the load-bearing frame is formed by stamping thin steel plate.

[0011] Preferably, a static sealing ring is provided at the bottom of the supporting frame, and the front view cross section of the vulcanized sealing ring is frustum-shaped, with the vulcanized sealing ring being wider at the bottom and narrower at the top.

[0012] Preferably, the inner ring of the first mounting ring is provided with a first sealing gasket, the first sealing gasket is interference-fitted to the bottom of the outer side of the vulcanized sealing ring, and the first mounting ring is sealed and installed at the bottom of the outer side of the vulcanized sealing ring by the first sealing gasket.

[0013] Preferably, a second sealing gasket is provided at the inner ring of the second mounting ring, and the second sealing gasket is interference-fitted onto the top of the outer side of the support frame, and the second mounting ring is sealed and installed on the top of the outer side of the support frame by the second sealing gasket.

[0014] Preferably, the auxiliary leak-proof outer ring has a first sealing strip and a second sealing strip on its upper and lower sides respectively. The first sealing strip fills and seals the outside of the first mounting ring, and the second sealing strip fills and seals the outside of the second mounting ring. The auxiliary leak-proof outer ring, the first sealing strip, and the second sealing strip are an integral unit.

[0015] Preferably, the top of the right-angle mounting ring is provided with an annular anti-detachment block, which is filled between the vulcanized sealing ring and the auxiliary sealing ring. The supporting frame, the right-angle mounting ring and the annular anti-detachment block are an integral unit.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. The wedge brake self-adjuster uses an integrated vulcanized sealing seat. A vulcanized sealing ring is assembled on the top of the supporting frame. After vulcanization, the vulcanized sealing ring has good toughness and tensile strength, suitable for supporting and adjusting the brake. An oil seal spring is provided on the top of the outer side of the vulcanized sealing ring. Through continuous elastic pressure, the sealing lip is pressed tightly against the shaft, improving the overall sealing performance of the device and preventing external impurities from entering. An integrated auxiliary leak-proof outer ring is sleeved and engaged on the outer side of the first and second mounting rings, which plays an auxiliary sealing role and has excellent sealing performance. An auxiliary sealing ring is provided on the inner side of the vulcanized sealing ring. The inner and outer joints are double-engaged, making it difficult to detach and leak. The sealing performance is excellent, making the device have excellent sealing performance and anti-detachment performance. The interference fit is stable, which improves the preload. Even if the sealing ring continues to wear, it can automatically compensate for the interference fit, resulting in excellent durability and protection. Attached Figure Description

[0018] Figure 1 A frontal perspective three-dimensional schematic diagram of an integrated vulcanized sealing seat for a wedge brake self-adjuster is provided for this utility model.

[0019] Figure 2 A front view cross-sectional schematic diagram of an integrated vulcanized sealing seat for a wedge brake self-adjuster proposed in this utility model.

[0020] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This utility model Figure 2 Enlarged view of point B in the middle;

[0022] Figure 5 The frontal perspective of the connection structure between the vulcanized sealing ring and the first mounting ring of the integrated vulcanized sealing seat for the wedge brake self-adjuster proposed in this utility model.

[0023] Figure 6 This is a three-dimensional front view cross-sectional view of the vulcanized sealing ring and auxiliary sealing ring of the integrated vulcanized sealing seat for the wedge brake self-adjuster proposed in this utility model.

[0024] Figure 7 This is a top-view perspective view of the connection structure between the right-angle mounting ring and the annular anti-detachment block of the integrated vulcanized sealing seat for the wedge brake self-adjuster proposed in this utility model.

[0025] In the diagram: 1. Support frame; 2. Vulcanized sealing ring; 3. Oil seal spring; 4. First mounting ring; 5. Second mounting ring; 6. Auxiliary leak-proof outer ring; 7. Auxiliary sealing ring; 8. Right-angle mounting ring; 9. Static sealing ring; 10. First sealing gasket; 11. Second sealing gasket; 12. First sealing strip; 13. Second sealing strip; 14. Annular anti-detachment block. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] Please see Figures 1-7 The wedge brake self-adjuster uses an integrated vulcanized sealing seat, including a support frame 1, and a vulcanized sealing ring 2 is provided on the top of the support frame 1.

[0029] An oil seal spring 3 is provided at the top edge of the vulcanized sealing ring 2, a first mounting ring 4 is provided at the bottom of the outer side of the vulcanized sealing ring 2, a second mounting ring 5 is provided at the top of the outer side of the bearing frame 1, and an integrally formed auxiliary leak-proof outer ring 6 is sleeved and engaged on the outer side of the first mounting ring 4 and the second mounting ring 5.

[0030] Among them, the bottom of the vulcanized sealing ring 2 is sleeved on the top outer side of the bearing frame 1, and the bottom of the inner side of the vulcanized sealing ring 2 is provided with an auxiliary sealing ring 7, which is sleeved on the top of the inner side of the bearing frame 1.

[0031] The beneficial effects of this solution are as follows: By assembling a vulcanized sealing ring 2 on the top of the load-bearing frame 1, the vulcanized sealing ring 2 has good toughness and tensile strength after vulcanization, which is suitable for supporting and adjusting the brake. An oil seal spring 3 is provided on the top of the outer side of the vulcanized sealing ring 2. Through continuous elastic pressure, the sealing lip is pressed tightly against the shaft, which improves the overall sealing performance of the device and prevents external impurities from entering. An integrally formed auxiliary anti-leakage outer ring 6 is sleeved and engaged on the outer side of the first mounting ring 4 and the second mounting ring 5, which plays an auxiliary sealing role and has excellent sealing performance. An auxiliary sealing ring 7 is provided on the inner side of the vulcanized sealing ring 2. The inner and outer joints are double-engaged, which is not easy to detach and leak, and has excellent sealing performance. This makes the device have excellent sealing performance and anti-detachment performance, and the interference is stable, which improves the preload. Even if the sealing ring continues to wear, it can automatically compensate for the interference, which has excellent durability and protection.

[0032] Furthermore, a right-angle mounting ring 8 is provided at the top of the support frame 1, the bottom of the vulcanized sealing ring 2 is sleeved on the outside of the right-angle mounting ring 8, and the auxiliary sealing ring 7 is filled and sleeved on the inside of the right-angle mounting ring 8. The support frame 1 and the right-angle mounting ring 8 are an integral whole.

[0033] By setting a right-angle mounting ring 8, an auxiliary sealing ring 7 is provided on the inner side of the vulcanized sealing ring 2. The auxiliary sealing ring 7 is fitted inside the right-angle mounting ring 8, and the inner side of the vulcanized sealing ring 2 is fitted outside the right-angle mounting ring 8. The inner and outer joints are double-locked, making it difficult to detach or leak, and the sealing performance is excellent.

[0034] Furthermore, the vulcanized sealing ring 2 and the auxiliary sealing ring 7 are an integral unit and are made of vulcanized rubber, while the load-bearing frame 1 is formed by stamping thin steel plate.

[0035] By setting the vulcanized sealing ring 2 and the auxiliary sealing ring 7 as a whole, both made of vulcanized rubber, the durability is good and the installation connection with the load-bearing frame 1 is stable and not easy to detach. The load-bearing frame 1 is made of thin steel plate stamping and integral molding, which is convenient to use and easy to install.

[0036] Furthermore, a static sealing ring 9 is provided at the bottom of the supporting frame 1, and the front view cross section of the vulcanized sealing ring 2 is frustum-shaped, with the vulcanized sealing ring 2 being wider at the bottom and narrower at the top.

[0037] By setting a static sealing ring 9, it is easy to install with quiet operation and sealing. The front view cross section of the vulcanized sealing ring 2 is truncated cone-shaped, wider at the bottom and narrower at the top, which is convenient for installation and use. The adjuster can be adjusted stably.

[0038] Furthermore, a first sealing gasket 10 is provided at the inner ring of the first mounting ring 4. The first sealing gasket 10 is interference-fitted to the bottom of the outer side of the vulcanized sealing ring 2, and the first mounting ring 4 is sealed and installed at the bottom of the outer side of the vulcanized sealing ring 2 by the first sealing gasket 10.

[0039] By setting the first sealing gasket 10, the connection and sealing performance between the first mounting ring 4 and the vulcanized sealing ring 2 are increased, resulting in a tighter connection.

[0040] Furthermore, a second sealing gasket 11 is provided at the inner ring of the second mounting ring 5. The second sealing gasket 11 is interference-fitted to the top of the outer side of the support frame 1, and the second mounting ring 5 is sealed and installed at the top of the outer side of the support frame 1 by the second sealing gasket 11.

[0041] By setting the second sealing gasket 11, the sealing performance between the second mounting ring 5 and the load-bearing frame 1 is enhanced, resulting in a high degree of connection tightness and a good connection effect.

[0042] Furthermore, the upper and lower sides of the inner side of the auxiliary leak-proof outer ring 6 are respectively provided with a first sealing strip 12 and a second sealing strip 13. The first sealing strip 12 fills and seals the outside of the first mounting ring 4, and the second sealing strip 13 fills and seals the outside of the second mounting ring 5. The auxiliary leak-proof outer ring 6, the first sealing strip 12 and the second sealing strip 13 are an integral whole.

[0043] By setting the first sealing strip 12 and the second sealing strip 13, they can respectively engage and seal with the first mounting ring 4 and the second mounting ring 5, which is convenient to install, has a good sealing effect, facilitates sealing installation, and is convenient to use.

[0044] Furthermore, the top of the right-angle mounting ring 8 is provided with an annular anti-detachment block 14, which is filled between the vulcanized sealing ring 2 and the auxiliary sealing ring 7. The supporting frame 1, the right-angle mounting ring 8 and the annular anti-detachment block 14 are an integral whole.

[0045] By setting an annular anti-detachment block 14, the gap between the vulcanized sealing ring 2 and the auxiliary sealing ring 7 when installed on the load-bearing frame 1 can be prevented from detaching by the annular anti-detachment block 14. The fitting effect is good. The load-bearing frame 1, the right-angle mounting ring 8 and the annular anti-detachment block 14 are integrated into a whole, which is convenient for integrated load-bearing and use.

[0046] How to use and how to work this device:

[0047] A vulcanized sealing ring 2 is fitted on the top of the load-bearing frame 1. The vulcanized sealing ring 2 is made of vulcanized material.

[0048] Vulcanized rubber refers to rubber that has been vulcanized. It has the characteristics of not being sticky and not being easy to break. It is a general term for rubber compounds after vulcanization. After vulcanization, a three-dimensional structure is formed in the raw rubber, which has high elasticity, heat resistance, tensile strength and insolubility in organic solvents. Vulcanized sealing ring 2 has good toughness and tensile strength after vulcanization, which is suitable for supporting and adjusting braking ability.

[0049] An oil seal spring 3 is provided on the top of the outer side of the vulcanized sealing ring 2. The oil seal spring 3 acts as a ring clamping spring, which presses the sealing lip tightly onto the shaft through continuous elastic pressure to form an initial sealing force. When the sealing lip is fatigued or worn due to long-term use, the elasticity of the spring can dynamically compensate for the loss of radial force, avoid sealing failure, improve the overall sealing performance of the device, and is not prone to jamming or failure after long-term use. It is easy to use and can better prevent external impurities from entering the regulator.

[0050] The bottom of the outer side of the vulcanized sealing ring 2 is provided with a first mounting ring 4, and the top of the outer side of the bearing skeleton 1 is provided with a second mounting ring 5. The outer sides of the first mounting ring 4 and the second mounting ring 5 are fitted with an integrally formed auxiliary leak-proof outer ring 6, which plays an auxiliary sealing role and provides auxiliary sealing protection for the connection between the bearing skeleton 1 and the vulcanized sealing ring 2, with excellent sealing performance.

[0051] The top of the support frame 1 is provided with a right-angle mounting ring 8, and the inner side of the vulcanized sealing ring 2 is provided with an auxiliary sealing ring 7. The auxiliary sealing ring 7 is fitted inside the right-angle mounting ring 8, and the inner side of the vulcanized sealing ring 2 is fitted outside the right-angle mounting ring 8. The inner and outer joints are double-locked, which makes it difficult to detach and leak, and the sealing performance is excellent. This makes the device have excellent sealing performance and anti-detachment performance. The interference fit is stable, which improves the preload. Even if the sealing ring continues to wear, it can automatically compensate for the interference fit, which has excellent durability and protection.

[0052] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An integrated vulcanized sealing seat for a wedge brake self-adjuster, comprising a load-bearing frame (1), characterized in that: A vulcanized sealing ring (2) is provided on the top of the supporting frame (1); An oil seal spring (3) is provided at the top edge of the vulcanized sealing ring (2), a first mounting ring (4) is provided at the bottom of the outer side of the vulcanized sealing ring (2), a second mounting ring (5) is provided at the top of the outer side of the bearing frame (1), and an integrally formed auxiliary leak-proof outer ring (6) is sleeved and engaged with the outer sides of the first mounting ring (4) and the second mounting ring (5). The bottom of the vulcanized sealing ring (2) is sleeved on the top outer side of the supporting frame (1), and the bottom of the inner side of the vulcanized sealing ring (2) is provided with an auxiliary sealing ring (7), which is sleeved on the top of the inner side of the supporting frame (1).

2. The integrated vulcanized sealing seat for the self-adjusting mechanism of a wedge brake according to claim 1, characterized in that: The top of the support frame (1) is provided with a right-angle mounting ring (8), the bottom of the vulcanized sealing ring (2) is sleeved on the outside of the right-angle mounting ring (8), and the auxiliary sealing ring (7) is filled and sleeved on the inside of the right-angle mounting ring (8). The support frame (1) and the right-angle mounting ring (8) are an integral unit.

3. The integrated vulcanized sealing seat for the self-adjusting mechanism of a wedge brake according to claim 1, characterized in that: The vulcanized sealing ring (2) and the auxiliary sealing ring (7) are an integral unit and are made of vulcanized rubber. The load-bearing frame (1) is formed by stamping thin steel plate.

4. The integrated vulcanized sealing seat for the wedge brake self-adjuster according to claim 1, characterized in that: The bottom of the supporting frame (1) is provided with a static sealing ring (9), and the front view cross section of the vulcanized sealing ring (2) is frustum-shaped, and the vulcanized sealing ring (2) is wider at the bottom and narrower at the top.

5. The integrated vulcanized sealing seat for the self-adjusting device of the wedge brake according to claim 1, characterized in that: The first mounting ring (4) has a first sealing gasket (10) on its inner ring. The first sealing gasket (10) is press-fitted onto the bottom of the outer side of the vulcanized sealing ring (2). The first mounting ring (4) is sealed and installed on the bottom of the outer side of the vulcanized sealing ring (2) by the first sealing gasket (10).

6. The integrated vulcanized sealing seat for the self-adjusting mechanism of a wedge brake according to claim 1, characterized in that: The second mounting ring (5) has a second sealing gasket (11) at its inner ring. The second sealing gasket (11) is press-fitted onto the top of the outer side of the support frame (1). The second mounting ring (5) is sealed and mounted on the top of the outer side of the support frame (1) by the second sealing gasket (11).

7. The integrated vulcanized sealing seat for the self-adjusting mechanism of a wedge brake according to claim 1, characterized in that: The auxiliary leak-proof outer ring (6) has a first sealing strip (12) and a second sealing strip (13) on its upper and lower sides respectively. The first sealing strip (12) fills and seals the outside of the first mounting ring (4), and the second sealing strip (13) fills and seals the outside of the second mounting ring (5). The auxiliary leak-proof outer ring (6), the first sealing strip (12) and the second sealing strip (13) are an integral whole.

8. The integrated vulcanized sealing seat for the self-adjusting device of the wedge brake according to claim 2, characterized in that: The top of the right-angle mounting ring (8) is provided with an annular anti-detachment block (14), which is filled between the vulcanized sealing ring (2) and the auxiliary sealing ring (7). The bearing frame (1), the right-angle mounting ring (8) and the annular anti-detachment block (14) are an integral unit.

Images