Air leakage prevention air chamber rubber diaphragm

Abstract

The utility model discloses an air leakage prevention air chamber rubber diaphragm which comprises a bowl-shaped diaphragm body, the diaphragm body comprises an outer ring skirt edge arranged on the periphery of the diaphragm body, a first diaphragm and a second diaphragm, the first diaphragm and the second diaphragm are arranged on the inner ring of the diaphragm body, and the first diaphragm and the second diaphragm are correspondingly arranged up and down. A middle cavity is formed between the first diaphragm and the second diaphragm, the middle cavity is filled with filling media, and the periphery of the first diaphragm and the periphery of the second diaphragm are both fixedly connected with the outer ring skirt edge. The middle of the diaphragm body is of the double-layer structure formed by combining the first diaphragm and the second diaphragm, the strength of the middle of the diaphragm body can be improved, the service life of the diaphragm body can be prolonged, even if the diaphragm on one side is damaged, the diaphragm body can still keep running, and safety is improved; the first diaphragm and the second diaphragm are prevented from mutually rubbing to influence the strength in the working process of the diaphragm body.

Description

[Technical Field]

[0001] This utility model relates to the technical field of automotive braking components, and in particular to a leak-proof rubber diaphragm for an air chamber. [Background Technology]

[0002] The brake chamber rubber diaphragm is the diaphragm of the brake chamber, playing a crucial role in transmitting pressure in the automotive braking system. When the vehicle brakes, air enters the brake chamber through the air intake, causing the diaphragm to deform under air pressure. This deformation pushes the push rod, which in turn rotates the brake adjusting arm and brake cam, pressing the brake shoe friction pads against the brake drum to generate braking force. When the vehicle releases the brakes, the compressed air in the brake chamber is discharged into the atmosphere through a dual-chamber brake valve or quick-release valve. The diaphragm and push rod return to their original state under the action of the position spring. The brake chamber rubber diaphragm plays a vital role in this process. The performance of the brake chamber rubber diaphragm directly affects the vehicle's braking performance; therefore, its quality and airtightness are extremely important. However, existing brake chamber rubber diaphragms are all single-layer structures with low strength, making them prone to damage. Once damaged, they will affect braking and compromise safety. [Utility Model Content]

[0003] The purpose of this invention is to solve the problems in the prior art by proposing a leak-proof air chamber rubber diaphragm. The diaphragm body has a double-layer structure, which is high in strength, not easily damaged, and has better safety.

[0004] To achieve the above objectives, this utility model proposes a leak-proof air chamber rubber diaphragm, comprising a bowl-shaped diaphragm body. The diaphragm body includes an outer ring skirt on its outer periphery, a first diaphragm and a second diaphragm on its inner ring. The first diaphragm and the second diaphragm are arranged vertically correspondingly, and an intermediate chamber is provided between the first diaphragm and the second diaphragm. The intermediate chamber is filled with a filling medium, and the outer periphery of both the first diaphragm and the second diaphragm is fixedly connected to the outer ring skirt.

[0005] Preferably, a plurality of connecting ribs are provided between the first diaphragm and the second diaphragm for connecting the two.

[0006] Preferably, the connecting ribs are arranged radially along the diaphragm body.

[0007] Preferably, both the first diaphragm and the second diaphragm include two rubber layers and a canvas layer sandwiched between the rubber layers on both sides.

[0008] Preferably, the diaphragm body is provided with a metal protective plate on the side near the brake spring for cooperating with the brake spring.

[0009] Preferably, the filling medium is hydraulic oil.

[0010] Preferably, a central connecting block is provided at the center position between the first diaphragm and the second diaphragm.

[0011] The beneficial effects of this invention, a leak-proof air chamber rubber diaphragm, are as follows: By setting the middle part of the diaphragm body to a double-layer structure composed of a first diaphragm and a second diaphragm, the strength of the middle part of the diaphragm body can be improved, and the service life can be increased. Even if one side of the diaphragm is damaged, the diaphragm body can still continue to operate, thus improving safety. The middle chamber separates the first diaphragm and the second diaphragm, preventing the first diaphragm and the second diaphragm from rubbing against each other during the operation of the diaphragm body, which would affect the strength.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. [Attached Image Description]

[0013] Figure 1 This is a schematic diagram of the main view cross-sectional structure of a leak-proof air chamber rubber diaphragm according to this utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of AA cross-section structure.

[0015] Figure 3 This is a schematic diagram of the main structure of a leak-proof air chamber rubber diaphragm according to this utility model.

[0016] In the figure: 1-diaphragm body, 2-metal protective plate, 11-outer ring skirt, 12-first diaphragm, 13-second diaphragm, 14-intermediate chamber, 15-connecting rib, 16-central connecting block, 101-rubber layer, 102-canvas layer.

Detailed Implementation Methods

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0018] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0019] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example 1:

[0022] See Figure 1 , Figure 2 and Figure 3This utility model discloses a leak-proof air chamber rubber diaphragm, comprising a diaphragm body 1, wherein the diaphragm body 1 is bowl-shaped, with the bottom of the bowl used to connect to a brake spring. The diaphragm body 1 includes an outer ring skirt 11 on its outer periphery, a first diaphragm 12 and a second diaphragm 13 on its inner ring. The outer ring skirt 11 is used to fix it and to seal the connection. The first diaphragm 12 and the second diaphragm 13 are arranged vertically correspondingly, and an intermediate chamber 14 is provided between the first diaphragm 12 and the second diaphragm 13. The intermediate chamber 14 is filled with a filling medium. The outer peripheries of the first diaphragm 12 and the second diaphragm 13 are both fixedly connected to the outer ring skirt 11. In this embodiment, the middle part of the diaphragm body 1 is set as a double-layer structure composed of a first diaphragm 12 and a second diaphragm 13, which can improve the strength of the middle part of the diaphragm body 1 and increase its service life. Even if one side of the diaphragm is damaged, the diaphragm body 1 can still keep operating and avoid air leakage. The middle chamber is set to separate the first diaphragm 12 and the second diaphragm 13, so as to avoid the first diaphragm 12 and the second diaphragm 13 rubbing against each other during the operation of the diaphragm body 1 and affecting its strength.

[0023] See Figure 1 Both the first diaphragm 12 and the second diaphragm 13 include two rubber layers 101 and a canvas layer 102 sandwiched between the rubber layers 101 on both sides, wherein the canvas layer 102 extends into the outer circumferential skirt 11. The canvas layer 102 provides support and increases strength, while the rubber layers provide toughness and sealing.

[0024] Specifically, the filling medium is hydraulic oil. Hydraulic oil can balance the pressure and prevent the intermediate chamber 14 from being compressed and deformed, thus affecting pressure transmission.

[0025] See Figure 1 A central connecting block 16 is provided at the center between the first diaphragm 12 and the second diaphragm 13. The central connecting block 16 connects the first diaphragm 12 and the second diaphragm 13 together at the center, improving the central strength and preventing deformation.

[0026] Example 2:

[0027] See Figure 2 A plurality of connecting ribs 15 are provided between the first diaphragm 12 and the second diaphragm 13 for connecting the two. The connecting ribs 15 are used to tightly connect the first diaphragm 12 and the second diaphragm 13 together, prevent them from separating, and improve strength.

[0028] See Figure 2 The connecting rib 15 is arranged radially along the diaphragm body 1. This improves the radial strength of the diaphragm body 1 and enhances its radial pull-out resistance.

[0029] See Figure 1Based on Embodiment 1, a metal protective plate 2 is provided on the side of the diaphragm body 1 near the brake spring for cooperating with the brake spring. The metal protective plate 2 can cooperate with the brake spring to improve strength and prevent damage.

[0030] The working process of this utility model:

[0031] This utility model discloses an air-leaking rubber diaphragm for a brake chamber. When the vehicle brakes, air enters the brake chamber through the air inlet. Under air pressure, the diaphragm body 1 deforms, thereby transmitting force to the other side. The double-layer structure of the first diaphragm 12 and the second diaphragm 13 can improve the strength of the middle part of the diaphragm body 1 and increase its service life. Even if one side of the diaphragm is damaged, the diaphragm body 1 can still continue to operate.

[0032] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The internal components of the electric slide rail, cylinder, welding machine, electric telescopic rod and controller all adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete the normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the existing technology, and will not be described in detail here.

[0033] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A leak-proof air chamber rubber diaphragm, comprising a bowl-shaped diaphragm body (1), characterized in that: The diaphragm body (1) includes an outer ring skirt (11) on its outer periphery, a first diaphragm (12) and a second diaphragm (13) on its inner ring. The first diaphragm (12) and the second diaphragm (13) are arranged vertically and vertically, and an intermediate chamber (14) is provided between the first diaphragm (12) and the second diaphragm (13). The intermediate chamber (14) is filled with a filling medium. The outer periphery of the first diaphragm (12) and the second diaphragm (13) are fixedly connected to the outer ring skirt (11).

2. The leak-proof air chamber rubber diaphragm as described in claim 1, characterized in that: A plurality of connecting ribs (15) are provided between the first diaphragm (12) and the second diaphragm (13) for connecting the two.

3. The leak-proof air chamber rubber diaphragm as described in claim 2, characterized in that: The connecting rib (15) is arranged radially along the diaphragm body (1).

4. The leak-proof air chamber rubber diaphragm as described in claim 1, characterized in that: Both the first diaphragm (12) and the second diaphragm (13) include two rubber layers (101) and a canvas layer (102) sandwiched between the two rubber layers (101).

5. The leak-proof air chamber rubber diaphragm as described in claim 1, characterized in that: The diaphragm body (1) is provided with a metal protective plate (2) on the side near the brake spring for cooperating with the brake spring.

6. The leak-proof air chamber rubber diaphragm as described in claim 1, characterized in that: The filling medium is hydraulic oil.

7. The leak-proof air chamber rubber diaphragm as described in claim 1, characterized in that: A central connecting block (16) is provided at the center between the first diaphragm (12) and the second diaphragm (13).

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