Rubber sealing sleeve with framework

Abstract

The utility model relates to the field of air pressure disc brake sealing, and discloses a rubber sealing sleeve with a framework, which comprises a rubber sleeve (1) and the framework (2). The framework (2) is fixedly connected with the rubber sleeve (1), the rubber sleeve (1) comprises an inner sealing ring (3) and an outer sealing ring (5), and the framework (2) is fixedly connected to the outer sealing ring (5); the framework (2) comprises an annular sleeve body (6) and a press-fitting part (7) which is located at the upper end of the sleeve body (6) and arranged along the outer portion of a pipe opening of the sleeve body (6), the sleeve body (6) comprises a first ring part (9) on the upper portion and a second ring part (10) on the lower portion, and the outer diameter of the first ring part (9) is larger than the inner diameter of a to-be-assembled hole. The device has the advantages of reliable structure, reliable sealing and the like.

Description

Technical Field

[0001] The utility model relates to the field of air pressure disc brake seals, in particular to a rubber sealing sleeve with a skeleton. Background Art

[0002] Chinese patent application CN101512180A discloses a disc brake specifically for trucks. The push disc of this type of pneumatic disc brake needs to be pushed out or retracted, and no leakage is allowed throughout the entire life cycle, otherwise it will cause product failure. The rubber sealing sleeve requires both the inner and outer rings to be sealed. The inner ring seals with the push disc, and the outer ring seals with the pressure plate hole. The push disc with the inner ring seal is a machined part with stable dimensions and reliable sealing; however, the outer ring and the pressure plate hole are relatively difficult to seal, and are prone to falling off and failure. The currently used glue fixation is prone to aging. In order to solve the problem of reliable sealing, a new skeleton structure was designed. Utility Model Content

[0003] The utility model aims at the shortcomings of the prior art and provides a rubber sealing sleeve with a skeleton.

[0004] In order to solve the above technical problems, the present invention solves them through the following technical solutions.

[0005] A rubber sealing sleeve with a skeleton comprises a rubber sleeve and a skeleton; the skeleton and the rubber sleeve are fixedly connected, the rubber sleeve comprises an inner sealing ring and an outer sealing ring, and the skeleton is fixedly connected to the outer sealing ring; the skeleton comprises an annular sleeve body and a press-fitting portion located at the upper end of the sleeve body and arranged along the outside of its pipe mouth, the sleeve body comprises a first ring portion at the upper part and a second ring portion at the lower part, and the outer diameter of the first ring portion is larger than the inner diameter of the hole to be assembled.

[0006] Preferably, the second ring portion is located inside the outer sealing ring, and the first ring portion is located outside the outer sealing ring.

[0007] Preferably, the press-fitting portion is an annular structure.

[0008] Preferably, an outer lip is provided at the upper end of the rubber sleeve, and the press-fitting portion is located inside the outer lip.

[0009] Preferably, the outer lip is arranged horizontally.

[0010] Preferably, the outer side surface of the outer sealing ring is provided with a slot extending inwardly thereof, the slot being an annular groove provided along the outer sealing ring, the second ring portion being inserted into the slot, and the first ring portion being exposed to the outside.

[0011] Preferably, a fixing groove cooperating with the press-fitting portion is provided on the lower side surface of the outer lip, and the press-fitting portion is inserted into the fixing groove.

[0012] Preferably, the skeleton and the rubber sleeve are an integrally formed structure.

[0013] This solution offers the following advantages over existing technologies: the skeleton provides both fixing and positioning support, ensuring the seal sleeve will not experience wear and tear throughout its lifecycle, while also ensuring the outer ring remains sealed. Furthermore, the skeleton structure is more convenient to integrate with the rubber body, resulting in lower costs and adaptability to different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the product.

[0015] Figure 2 A schematic diagram of the skeleton structure.

[0016] Figure 3 It is the assembly diagram of the product.

[0017] The technical names of the figures in the figure are: 1-rubber sleeve, 2-skeleton, 3-inner sealing ring, 5-outer sealing ring, 6-sleeve body, 7-press-fitting part, 9-first ring part, 10-second ring part, 11-outer lip, 12-slot, 13-fixing groove. DETAILED DESCRIPTION

[0018] The present invention is described in further detail below with reference to the accompanying drawings and embodiments.

[0019] Example 1

[0020] A rubber sealing sleeve with a frame 2 comprises a rubber sleeve 1 and a frame 2. The frame 2 and rubber sleeve 1 are fixedly connected. The rubber sleeve 1 includes an inner sealing ring 3 and an outer sealing ring 5, to which the frame 2 is fixedly connected. The frame 2 comprises an annular sleeve body 6 and a press-fit portion 7 located at the upper end of the sleeve body 6 and along the outer portion of its nozzle. The sleeve body 6 comprises a first ring portion 9 at the upper portion and a second ring portion 10 at the lower portion. The outer diameter of the first ring portion 9 is larger than the inner diameter of the hole to be assembled. In this embodiment, both the inner and outer rings of the entire rubber sleeve 1 require sealing, and both are essentially annular structures. The frame 2 structure in this embodiment serves as a fixing mechanism and supports the outer ring seal. The second ring portion 10 is a protruding portion compared to the entire sleeve body 6, so it forms an interference fit with the hole to be assembled in the outer ring. Since an interference fit requires external force for assembly, the press-fit portion 7 facilitates the operation of the press-fit mechanism or tooling.

[0021] To ensure assembly reliability, in this solution, the second ring portion 10 is located inside the outer sealing ring 5, and the first ring portion 9 is located outside the outer sealing ring 5. Compared with the interference fit between the rubber and the hole, the direct contact interference fit of the frame 2 is obviously more reliable and will not be affected by rubber aging, which can extend its service life.

[0022] In this embodiment, the press-fitting portion 7 is an annular structure, which can be realized by flanging or bending processes.

[0023] In this embodiment, in order to prevent the bracket from directly contacting the pressing tool, an outer lip 11 is provided on the upper end of the rubber sleeve 1, and the pressing portion 7 is located inside the outer lip 11. Specifically, the outer lip 11 is arranged horizontally.

[0024] The frame 2 and rubber sleeve 1 can be connected using a variety of connection relationships or manufacturing methods. In this embodiment, the outer side of the outer sealing ring 5 is provided with a slot 12 extending inward. Slot 12 is an annular groove provided along the outer sealing ring 5. The second ring portion 10 is inserted into slot 12, leaving the first ring portion 9 exposed. The underside of the outer lip 11 is provided with a fixing groove 13 that mates with the press-fit portion 7. The press-fit portion 7 is inserted into fixing groove 13.

[0025] During the press-fitting process, the inner ring of the rubber sealing sleeve with the frame 2 is first assembled onto the push plate 14, and then the small assembly is press-fitted into the assembly hole of the pressure plate. After press-fitting, the first ring portion 9 is fixed with the assembly hole to achieve an interference fit, ensuring that both the inner and outer rings are fixed and sealed and do not fall off. The outer rubber portion of the second ring portion 10 is sealed with the assembly hole.

[0026] Example 2

[0027] The difference from Example 1 is that the slot 12 and the fixing slot 13 are not directly opened on the rubber sleeve 1 and then the skeleton 2 is installed, but the skeleton 2 and the rubber sleeve 1 are integrally formed through a process to form the above structure. The slot 12 and the fixing slot 13 are formed because the skeleton 2 occupies this space.

[0028] Example 3

[0029] The difference from Example 1 is that the frame 2 is a metal part.

[0030] Example 4

[0031] The difference from embodiment 1 is that the frame 2 is a plastic part.

Claims

1. A rubber sealing sleeve with a skeleton (2), characterized by: The invention comprises a rubber sleeve (1) and a frame (2); the frame (2) and the rubber sleeve (1) are fixedly connected, the rubber sleeve (1) comprises an inner sealing ring (3) and an outer sealing ring (5), and the frame (2) is fixedly connected to the outer sealing ring (5); the frame (2) comprises an annular sleeve body (6) and a press-fitting portion (7) located at the upper end of the sleeve body (6) and arranged along the outside of the pipe mouth; the sleeve body (6) comprises a first ring portion (9) at the upper part and a second ring portion (10) at the lower part; the outer diameter of the first ring portion (9) is larger than the inner diameter of the hole to be assembled.

2. The rubber sealing sleeve with a skeleton (2) according to claim 1 is characterized in that: The second ring portion (10) is located inside the outer sealing ring (5), and the first ring portion (9) is located outside the outer sealing ring (5).

3. The rubber sealing sleeve with a skeleton (2) according to claim 2 is characterized in that: The press-fitting portion (7) is an annular structure.

4. The rubber sealing sleeve with a skeleton (2) according to claim 3 is characterized in that: An outer lip (11) is provided at the upper end of the rubber sleeve (1), and the press-fitting portion (7) is located inside the outer lip (11).

5. The rubber sealing sleeve with a skeleton (2) according to claim 2, characterized in that: The outer lip (11) is arranged horizontally.

6. The rubber sealing sleeve with a skeleton (2) according to claim 2, characterized in that: The outer side surface of the outer sealing ring (5) is provided with a slot (12) extending inwardly thereof. The slot (12) is an annular groove provided along the outer sealing ring (5). The second ring portion (10) is inserted into the slot (12), and the first ring portion (9) is exposed to the outside.

7. The rubber sealing sleeve with a skeleton (2) according to claim 5, characterized in that: The lower side surface of the outer lip (11) is provided with a fixing groove (13) matched with the press-fitting portion (7), and the press-fitting portion (7) is inserted into the fixing groove (13).

8. The rubber sealing sleeve with a skeleton (2) according to claim 2, characterized in that: The skeleton (2) and the rubber sleeve (1) are an integrally formed structure.

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