Dustproof cover for self-adjusting device of wedge brake

Abstract

The utility model discloses a dust cover for a wedge brake self-regulator, which comprises a rubber dust cover and a metal support framework, the metal support framework is embedded and mounted on the inner side of the edge of the rubber dust cover, and an auxiliary mounting notch is arranged on the metal support framework in the middle of the rubber dust cover. According to the utility model, the anti-leakage outer wrapping ring is mounted on the metal supporting framework, and the auxiliary mounting notches are formed in the metal supporting framework, so that the anti-leakage outer wrapping ring can be tightly attached to the metal supporting framework and the rubber dust cover, the mounting matching degree is excellent, and the sealing fixing strips are correspondingly arranged at the two ends of the anti-leakage outer wrapping ring; according to the anti-leakage outer wrapping ring, the anti-leakage outer wrapping ring has the good attaching installation capacity and anti-leakage capacity, the internal attaching compactness is high, hollowing and leakage are not prone to occurring, the device plays a role in wrapping and protecting framework leakage, the installation attaching compactness is high, the overall attaching matching degree is high, installation and assembly are convenient, and the magnitude of interference is stable.

Description

Technical Field

[0001] This utility model relates to the field of wedge brake self-adjustment technology, and in particular to a dust cover for a wedge brake self-adjustment. Background Technology

[0002] In China, wedge brakes are mainly used in heavy vehicles and construction machinery, and most adopt an air brake structure. 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 it between the brake drum and the friction pads, maintaining a constant braking force. It is installed inside the brake drum at the rear axle wheel end, in a harsh working environment. Dust generated by the friction between the friction pads and the brake drum, as well as external mud and water, can enter the self-adjusting mechanism, causing grease failure, movement stagnation, and ultimately leading to abnormal operation or even failure of the self-adjusting mechanism, posing a significant safety hazard to the vehicle. The sealing capability of the dust cover is a crucial protective feature.

[0003] The self-adjusting actuator has a dust cover at each end, one end fitting into the housing and the other into the movable push rod. During installation, the metal frame of the dust cover is exposed and has an interference fit with the inner hole of the housing. The metal frame is made of thin steel plate and has a certain roundness error. Therefore, a gap is inevitable after fitting with the inner hole of the housing. Water and fine dust can seep into the self-adjusting actuator, causing lubrication failure, movement stagnation, poor sealing, and the entry of foreign objects. At the same time, the frame is made of thin steel plate and has a large outer diameter tolerance and roundness, making it difficult to control the interference fit with the inner hole of the housing. This easily leads to assembly difficulties and insufficient interference fit, resulting in poor sealing and insufficient assembly matching. Therefore, we propose a dust cover for the self-adjusting actuator of the wedge brake to solve the above 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] A dust cover for a wedge brake self-adjuster includes a rubber dust cover and a metal support frame, wherein the metal support frame is embedded and installed on the inner side of the edge of the rubber dust cover.

[0007] The rubber dust cover has a metal support frame in the middle with an auxiliary installation slot. The inside of the rubber dust cover is fitted and filled into the auxiliary installation slot. The outside of the metal support frame is fitted with a leak-proof outer ring. The inside of the leak-proof outer ring is filled and engaged in the auxiliary installation slot.

[0008] The two ends of the leak-proof outer ring are respectively provided with sealing strips, and the two sealing strips are respectively fixedly installed on the inner and outer sides of the rubber dust cover.

[0009] Preferably, the metal support frame is annularly inserted into the inner side of the edge of the rubber dust cover, the rubber dust cover is made of high-temperature resistant rubber, and the metal support frame is made of thin steel plate.

[0010] Preferably, the outer edge of the rubber dust cover is provided with multiple embedded mounting holes at equal intervals, and the inner side of the leak-proof outer ring is provided with multiple fitting filler blocks, which are correspondingly interference-filled into the inner side of the embedded mounting holes.

[0011] Preferably, the rubber dust cover and the leak-proof outer ring are both vulcanized rubber, and the metal support frame is integrally stamped.

[0012] Preferably, the rubber dust cover is provided with a filling and fixing strip at its edge, the filling and fixing strip being interference-filled into the auxiliary mounting groove, and the metal support frame being interference-filled into the edge of the rubber dust cover through the auxiliary mounting groove.

[0013] Preferably, the inner side of the leak-proof outer ring is fitted onto the metal support frame, the metal support frame is inserted into and filled into the inner wall of the edge of the rubber dust cover, and the two sides of the metal support frame are respectively sealed and bonded to the rubber dust cover and the leak-proof outer ring.

[0014] Preferably, the outer and inner sides of the edge of the rubber dust cover are provided with fixing and sealing grooves, and the two sealing and fixing strips are respectively filled into the inner side of the two fixing and sealing grooves.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. The dust cover for the self-adjusting device of this wedge brake has a metal support frame inserted into the outer edge of the rubber dust cover, which provides rigid load-bearing. The exposed part of the metal support frame is wrapped with a leak-proof outer ring. An auxiliary installation slot is opened on the metal support frame. The rubber dust cover and the leak-proof outer ring are fitted to the two sides of the auxiliary installation slot, and the connection is tight. This allows the metal support frame to be tightly wrapped and fitted between the leak-proof outer ring and the rubber dust cover by the auxiliary installation slot. The installation matching degree is excellent, and the device can wrap and protect the exposed part of the frame. The installation tightness is high and it is not easy to have hollow spots or leaks.

[0017] 2. The dust cover for the self-adjusting device of this wedge brake has sealing and fixing strips at both ends of the anti-leakage outer ring, which can be installed on both sides of the rubber dust cover. This gives the anti-leakage outer ring good fit and anti-leakage ability. When the anti-leakage outer ring is fitted to the metal support frame, it can be fitted and installed in the embedded mounting hole by the fitting filler block. The fit and installation effect is good, the internal fit is tight, and it is not easy to have hollows and leaks. This makes the overall fit and matching of the device high, the installation convenient, the assembly convenient, and the interference fit stable. Attached Figure Description

[0018] Figure 1 A frontal perspective three-dimensional schematic diagram of a dust cover for a wedge brake self-adjuster proposed in this utility model;

[0019] Figure 2 A three-dimensional front view sectional view of the dust cover for the self-adjusting device of the wedge brake is provided for this utility model.

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

[0021] Figure 4 A side perspective three-dimensional schematic diagram of a dust cover for a wedge brake self-adjuster proposed in this utility model;

[0022] Figure 5 A three-dimensional side view sectional view of a dust cover for a wedge brake self-adjuster is provided for this utility model.

[0023] Figure 6 This is a three-dimensional front view sectional view of the rubber dust cover and fixed sealing groove structure of this utility model;

[0024] Figure 7 This is a frontal perspective three-dimensional schematic diagram of the metal support frame and the embedded mounting hole connection structure of this utility model.

[0025] In the diagram: 1. Rubber dust cover; 2. Metal support frame; 3. Auxiliary installation groove; 4. Leak-proof outer ring; 5. Sealing strip; 6. Fixed sealing groove; 7. Embedded installation hole; 8. Fitting filler block; 9. Filler fixing strip. 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 A dust cover for a wedge brake self-adjuster includes a rubber dust cover 1 and a metal support frame 2, wherein the metal support frame 2 is embedded and installed on the inner side of the edge of the rubber dust cover 1.

[0029] The middle part of the rubber dust cover 1 is provided with a metal support frame 2 and an auxiliary installation slot 3. The inside of the rubber dust cover 1 is fitted and filled into the auxiliary installation slot 3. The outside of the metal support frame 2 is fitted with a leak-proof outer ring 4, and the inside of the leak-proof outer ring 4 is filled and engaged in the auxiliary installation slot 3.

[0030] The two ends of the leak-proof outer ring 4 are respectively provided with sealing and fixing strips 5, and the two sealing and fixing strips 5 are respectively fixedly installed on the inner and outer sides of the rubber dust cover 1;

[0031] The beneficial effects of this solution are as follows: A metal support frame 2 is inserted and embedded at the outer edge of the rubber dust cover 1 to provide rigid load-bearing capacity. An anti-leakage outer ring 4 is installed on the exposed part of the metal support frame 2. An auxiliary installation slot 3 is provided on the metal support frame 2. The rubber dust cover 1 and the anti-leakage outer ring 4 are correspondingly fitted to both sides of the auxiliary installation slot 3, resulting in a tight connection. The anti-leakage outer ring 4 can be securely installed on the metal support frame 2, with excellent installation matching. Correspondingly, the two ends of the anti-leakage outer ring 4 are provided with… The sealing and fixing strip 5 can be installed on both sides of the rubber dust cover 1, so that the anti-leakage outer ring 4 has good fitting and installation capabilities and anti-leakage capabilities. When the anti-leakage outer ring 4 is fitted to the metal support frame 2, it can be fitted and installed in the embedded installation hole 7 by the fitting filler block 8. The fitting and installation effect is good, the internal fitting tightness is high, and it is not easy to have hollow leakage. The device plays a role in wrapping and protecting the frame. The installation and fitting tightness is high, it is not easy to have hollow leakage, and the overall fitting and matching degree is high. It is convenient to install and assemble, and the interference fit is stable.

[0032] Furthermore, the metal support frame 2 is inserted into the inner side of the edge of the rubber dust cover 1 in a ring shape. The rubber dust cover 1 is made of high temperature resistant rubber, and the metal support frame 2 is made of thin steel plate.

[0033] By setting the metal support frame 2 in a ring shape and inserting it into the inner side of the edge of the rubber dust cover 1, the metal support frame 2 can be embedded and installed into the inner side of the edge of the rubber dust cover 1, with high installation tightness. The rubber dust cover 1 is made of high temperature resistant rubber material, with excellent durability and wear resistance. The metal support frame 2 is made of thin steel plate, which plays the role of skeleton support and has good adaptability.

[0034] Furthermore, multiple embedded mounting holes 7 are provided at equal intervals along the outer edge of the rubber dust cover 1, and multiple fitting filler blocks 8 are provided on the inner side of the anti-leakage outer ring 4, with the multiple fitting filler blocks 8 corresponding to the inner side of the embedded mounting holes 7.

[0035] By setting the embedded mounting hole 7 and the fitting filler block 8, when the anti-leakage outer ring 4 is attached to the metal support frame 2, the fitting filler block 8 can be correspondingly attached and installed in the embedded mounting hole 7. The fitting and installation effect is good, and its internal tightness is high, making it less prone to hollowing and leakage.

[0036] Furthermore, both the rubber dust cover 1 and the leak-proof outer ring 4 are vulcanized rubber, and the metal support frame 2 is integrally stamped.

[0037] By setting both the rubber dust cover 1 and the leak-proof outer ring 4 to be made of vulcanized rubber, which has excellent toughness and wear resistance, and the metal support frame 2 is integrally stamped, which has excellent durability and practicality, thus improving service life.

[0038] Furthermore, a filling and fixing strip 9 is provided at the edge of the rubber dust cover 1. The filling and fixing strip 9 is correspondingly filled into the auxiliary installation groove 3. The metal support frame 2 is interference-fitted to the edge of the rubber dust cover 1 by the auxiliary installation groove 3.

[0039] By setting the filling fixing strip 9, the filling fixing strip 9 can be correspondingly filled into the auxiliary installation groove 3, so that the metal support frame 2 can be filled and fixed into the auxiliary installation groove 3 by the filling fixing strip 9 during installation, which plays an auxiliary fitting and installation role and has good fit.

[0040] Furthermore, the inner side of the anti-leakage outer ring 4 is fitted onto the metal support frame 2, and the metal support frame 2 is inserted into and filled into the inner wall of the edge of the rubber dust cover 1. The two sides of the metal support frame 2 are sealed and bonded to the rubber dust cover 1 and the anti-leakage outer ring 4 respectively.

[0041] By setting the inner side of the anti-leakage outer ring 4 to fit onto the metal support frame 2, the rubber dust cover 1 and the anti-leakage outer ring 4 are respectively fitted onto the two sides of the auxiliary installation groove 3. The fit is tight and the adaptability is good. Furthermore, the two sides of the metal support frame 2 are sealed and bonded to the rubber dust cover 1 and the anti-leakage outer ring 4 respectively, which further improves the tightness of the installation and prevents foreign objects from entering through voids. It is highly practical.

[0042] Furthermore, the outer and inner sides of the edge of the rubber dust cover 1 are provided with fixing and sealing grooves 6, and the two sealing and fixing strips 5 are respectively filled into the inner side of the two fixing and sealing grooves 6.

[0043] By setting a fixed sealing groove 6, two sealing strips 5 are respectively filled into the inner side of the two fixed sealing grooves 6, which makes the fit-fit installation convenient. This gives the anti-leakage outer ring 4 good fit-fit installation ability and anti-leakage ability, and excellent anti-leakage protection ability. Its connection gap can be tightly sealed by the sealing strips 5, so that fine dust and dirt are not easy to enter the interior of the self-regulator, and the sealing effect is good.

[0044] How to use and how to work this device:

[0045] A metal support frame 2 is inserted and embedded at the outer edge of the rubber dust cover 1 to provide rigid load-bearing function. The metal support frame 2 is exposed on the outside of the rubber dust cover 1. During installation and fixing, a leak-proof outer ring 4 can be wrapped around the exposed part of the metal support frame 2. An auxiliary installation slot 3 is provided on the metal support frame 2. The rubber dust cover 1 and the leak-proof outer ring 4 are respectively attached to the two sides of the auxiliary installation slot 3, so that the metal support frame 2 can be tightly installed on the rubber dust cover 1. At the same time, the leak-proof outer ring 4 can be tightly installed on the metal support frame 2, so that the metal support frame 2 can be tightly wrapped and attached between the leak-proof outer ring 4 and the rubber dust cover 1 by the auxiliary installation slot 3, resulting in excellent installation matching.

[0046] The two ends of the leak-proof outer ring 4 are equipped with sealing strips 5, which can be installed on both sides of the rubber dust cover 1, giving the leak-proof outer ring 4 good fit and leak-proof capability. Its connection gap can be tightly sealed by the sealing strips 5, preventing fine dust and dirt from easily entering the self-regulating device, resulting in a good sealing effect. Both the rubber dust cover 1 and the leak-proof outer ring 4 are made of vulcanized rubber, which has strong wear resistance and excellent durability.

[0047] The inner side of the leak-proof outer ring 4 is provided with multiple fitting filler blocks 8, and the edge of the metal support frame 2 is provided with multiple embedded installation holes 7. When the leak-proof outer ring 4 is fitted to the metal support frame 2, the fitting filler blocks 8 can be fitted and installed in the embedded installation holes 7 respectively. The fitting and installation effect is good, the internal fitting tightness is high, and it is not easy to have hollow leakage. The leak-proof outer ring 4 has a good sealing installation capability and excellent sealing performance, so that the device can wrap and protect the frame from leakage. The installation and fitting tightness is high, it is not easy to have hollow leakage, and the overall fitting and matching degree is high. It is convenient to install and assemble, and the interference fit is stable.

[0048] 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. A dust cover for wedge brake self-adjuster comprising a rubber dust cover (1) and a metal supporting skeleton (2), characterized in that: The metal support frame (2) is embedded in the inner side of the edge of the rubber dust cover (1); The rubber dust cover (1) has a metal support frame (2) in the middle and an auxiliary installation slot (3) on it. The inside of the rubber dust cover (1) is fitted and filled into the auxiliary installation slot (3). The outside of the metal support frame (2) is fitted with a leak-proof outer ring (4). The inside of the leak-proof outer ring (4) is filled and locked into the auxiliary installation slot (3). The two ends of the anti-leakage outer ring (4) are respectively provided with sealing and fixing strips (5), and the two sealing and fixing strips (5) are respectively fixedly installed on the inner and outer sides of the rubber dust cover (1).

2. The dust shield for a wedge brake self-adjuster according to claim 1, wherein: The metal support frame (2) is annularly inserted into the inner side of the edge of the rubber dust cover (1). The rubber dust cover (1) is made of high-temperature resistant rubber, and the metal support frame (2) is made of thin steel plate.

3. The dust shield for a wedge brake self-adjuster according to claim 1, wherein: The rubber dust cover (1) has multiple embedded mounting holes (7) at equal intervals on the outer edge. The leak-proof outer ring (4) has multiple fitting filler blocks (8) on its inner side. The multiple fitting filler blocks (8) are correspondingly filled into the inner side of the embedded mounting holes (7).

4. The dust shield for a wedge brake self-adjuster according to claim 1, wherein: The rubber dust cover (1) and the leak-proof outer ring (4) are both vulcanized rubber, and the metal support frame (2) is integrally stamped.

5. The dust shield for a wedge brake self-adjuster according to claim 1, wherein: The rubber dust cover (1) is provided with a filling and fixing strip (9) at the edge. The filling and fixing strip (9) is filled into the auxiliary installation slot (3) by interference fit. The metal support frame (2) is interference fit into the edge of the rubber dust cover (1) by the auxiliary installation slot (3).

6. The dust shield for a wedge brake self-adjuster according to claim 1, wherein: The inner side of the anti-leakage outer ring (4) is fitted onto the metal support frame (2), and the metal support frame (2) is inserted into and filled into the inner wall of the edge of the rubber dust cover (1). The two sides of the metal support frame (2) are sealed and bonded to the rubber dust cover (1) and the anti-leakage outer ring (4) respectively.

7. The dust cover for the self-adjusting device of the wedge brake according to claim 1, characterized in that: The rubber dust cover (1) has a fixed sealing groove (6) on both the outer and inner sides of its edge, and the two sealing strips (5) are respectively filled into the inner side of the two fixed sealing grooves (6).

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