Expandable rubber leather film

Abstract

The utility model discloses an expandable rubber membrane, which relates to the technical field of brake chamber parts and comprises an outer membrane assembly and an inner membrane assembly, and the inner membrane assembly is arranged in the outer membrane assembly. The double-layer arrangement of the outer skin membrane assembly and the inner skin membrane assembly is adopted, the elastic filling layer is filled between the outer skin membrane assembly and the inner skin membrane assembly, and the elastic filling layer has good elasticity, so that the overall deformation quantity of the skin membrane can be greatly improved, the elastic sealing effect of the skin membrane is improved, meanwhile, the deformation quantity is large, and the sealing effect is good. The pressure on the leather film can be buffered, the abrasion of the leather film is reduced, the service life of the leather film is prolonged, meanwhile, the contact area of the inner side of the leather film can be increased through the arrangement of the first extension sealing ring and the second extension sealing ring, and the sealing effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake air chamber components, in particular to an expandable rubber membrane. Background Art

[0002] Brake diaphragm, also known as rubber brake diaphragm, is a rubber-and-fabric diaphragm used in bicycle brake chambers to transmit pressure. Its working pressure is 0.5-0.8MPa and its working temperature is -40-+70℃. The brake diaphragm used in the prior art is a single-layer sealing structure with limited deformation. Under the repeated pressure of the push rod during operation, it is easy to cause leakage or even rupture, which reduces the service life.

[0003] Therefore, it is necessary to invent a kind of expandable rubber membrane to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an expandable rubber membrane to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an expandable rubber membrane, comprising an outer membrane assembly and an inner membrane assembly, wherein the inner membrane assembly is arranged inside the outer membrane assembly;

[0006] The outer membrane assembly comprises an outer ring and an inner ring, and the inner ring is located inside the outer ring;

[0007] The endothelial membrane assembly comprises a bottom seal and an endothelial membrane body, and the endothelial membrane body is integrally formed around and arranged at the middle of the top end of the bottom seal.

[0008] Preferably, a membrane top is integrally formed at the top end between the outer ring and the inner ring, and a first extended sealing ring is arranged around the top opening edge of the membrane top.

[0009] Preferably, the bottom ends of the outer ring and the inner ring are respectively integrally formed with the outer side and the inner side of the top end of the bottom seal, and a second extended sealing ring is arranged around the bottom opening edge of the bottom seal.

[0010] Preferably, a buffer cavity is formed between the outer membrane assembly and the inner membrane assembly, and the interior of the buffer cavity is filled with an elastic filling layer.

[0011] Preferably, an elastic retaining strip is fixedly mounted on the top of the endothelial membrane body, and the elastic retaining strip is arranged in an inverted "U" shape.

[0012] Preferably, a plurality of the elastic baffles are provided, and the plurality of elastic baffles are distributed in a ring array, and the outer side walls of the elastic baffles are adhesively connected to the inner wall of the outer membrane assembly.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model adopts a double-layer setting of an outer membrane assembly and an inner membrane assembly, and an elastic filling layer is filled between the outer membrane assembly and the inner membrane assembly. The elastic filling layer has good elasticity, thereby greatly improving the overall deformation of the membrane and improving the elastic sealing effect of the membrane. At the same time, the large deformation can buffer the pressure on the membrane, reduce the wear of the membrane, and increase the service life of the membrane. At the same time, through the setting of the first extended sealing ring and the second extended sealing ring, the contact area on the inner side of the membrane can be increased, further improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0016] Figure 2 For the utility model Figure 1 Schematic diagram of the partial cross-sectional view of the structure.

[0017] Figure 3 It is a schematic diagram of the outer membrane assembly structure of the utility model.

[0018] Figure 4 It is a schematic diagram of the endothelial membrane assembly structure of the utility model.

[0019] In the figure: 1. outer membrane assembly; 2. inner membrane assembly; 3. buffer chamber; 4. elastic filling layer; 5. elastic baffle; 101. outer ring; 102. inner ring; 103. membrane top; 104. first extended sealing ring; 201. bottom sealing strip; 202. inner membrane body; 203. second extended sealing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides Figure 1-4The expandable rubber membrane shown in the figure includes an outer membrane assembly 1 and an inner membrane assembly 2, the inner membrane assembly 2 is arranged inside the outer membrane assembly 1, the outer membrane assembly 1 includes an outer ring 101 and an inner ring 102, and the inner ring 102 is located inside the outer ring 101, and the top between the outer ring 101 and the inner ring 102 is integrally formed with a membrane top 103, and the top opening edge of the membrane top 103 is surrounded by a first extended sealing ring 104, the bottom ends of the outer ring 101 and the inner ring 102 are respectively integrally formed with the top outer side and the inner side of the bottom seal 201, and the bottom opening edge of the bottom seal 201 is surrounded by a second extended sealing ring 203, and the outer membrane A buffer cavity 3 is formed between the assembly 1 and the inner membrane assembly 2. The interior of the buffer cavity 3 is filled with an elastic filling layer 4. The elastic filling layer 4 is polyurethane foam. Polyurethane foam is an open honeycomb structure material with excellent elasticity and toughness. It can withstand long-term compression without failure. The outer membrane assembly 1 and the inner membrane assembly 2 are double-layered, and the elastic filling layer 4 is filled between the outer membrane assembly 1 and the inner membrane assembly 2. The elastic filling layer 4 has good elasticity, which can greatly improve the overall deformation of the membrane and improve the elastic sealing effect of the membrane. At the same time, the large deformation can buffer the pressure on the membrane, reduce the wear of the membrane, and improve the service life of the membrane.

[0022] Furthermore, the endothelial membrane assembly 2 includes a bottom seal 201 and an endothelial membrane body 202, and the endothelial membrane body 202 is integrally formed around the middle of the top end of the bottom seal 201, and the top end of the endothelial membrane body 202 is fixedly clamped with an elastic baffle 5, and the elastic baffle 5 is arranged in an inverted "U" shape, and there are multiple elastic baffles 5, and the multiple elastic baffles 5 are distributed in a ring array, and the outer wall of the elastic baffle 5 is adhesively connected to the inner wall of the outer membrane assembly 1. The elastic baffle 5 is made of elastic rubber and has good elasticity. The arrangement of multiple elastic baffles 5 can further assist in restoring the deformation of the rebound membrane.

[0023] Working principle of this utility model:

[0024] When in use, due to the double-layer setting of the outer membrane assembly 1 and the inner membrane assembly 2, and the elastic filling layer 4 is filled between the outer membrane assembly 1 and the inner membrane assembly 2, the elastic filling layer 4 has good elasticity, which can greatly improve the overall deformation of the membrane and improve the elastic sealing effect of the membrane. At the same time, the large deformation can buffer the pressure on the membrane, reduce the wear of the membrane, and increase the service life of the membrane. At the same time, through the setting of the first extended sealing ring 104 and the second extended sealing ring 203, the contact area on the inner side of the membrane can be increased, further improving the sealing effect.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An expandable rubber membrane, characterized in that: It comprises an outer membrane assembly (1) and an inner membrane assembly (2), wherein the inner membrane assembly (2) is arranged inside the outer membrane assembly (1); The outer membrane assembly (1) comprises an outer ring (101) and an inner ring (102), and the inner ring (102) is located inside the outer ring (101); The endothelial membrane assembly (2) comprises a bottom seal (201) and an endothelial membrane body (202), and the endothelial membrane body (202) is integrally formed around and arranged in the middle of the top end of the bottom seal (201).

2. The expandable rubber membrane according to claim 1, characterized in that: A membrane top (103) is integrally formed at the top end between the outer ring (101) and the inner ring (102), and a first extended sealing ring (104) is arranged around the top opening edge of the membrane top (103).

3. The expandable rubber membrane according to claim 2, characterized in that: The bottom ends of the outer ring (101) and the inner ring (102) are respectively integrally formed with the outer side and the inner side of the top end of the bottom seal (201), and a second extended sealing ring (203) is arranged around the bottom opening edge of the bottom seal (201).

4. The expandable rubber membrane according to claim 3, characterized in that: A buffer cavity (3) is formed between the outer membrane assembly (1) and the inner membrane assembly (2), and the interior of the buffer cavity (3) is filled with an elastic filling layer (4).

5. The expandable rubber membrane according to claim 4, characterized in that: An elastic retaining strip (5) is fixedly mounted on the top end of the endothelial membrane body (202), and the elastic retaining strip (5) is arranged in an inverted "U" shape.

6. The expandable rubber membrane according to claim 5, characterized in that: A plurality of the elastic baffles (5) are provided, and the plurality of elastic baffles (5) are distributed in a ring array, and the outer side walls of the elastic baffles (5) are adhesively connected to the inner wall of the outer membrane assembly (1).

Images