Braking leather cup capable of preventing air leakage

Abstract

The utility model discloses an air leakage prevention brake leather cup, which relates to the technical field of leather cups, and comprises a novel tensile rubber part and a plurality of positioning ball parts distributed around the edge of the novel tensile rubber part, the novel tensile rubber part comprises a basic rubber part and an edge locking rubber part sleeved on the periphery of the basic rubber part, a containing groove is formed in the inner circumferential face of the edge locking rubber part, and an extending part is arranged in the containing groove. According to the utility model, through the arrangement of the novel tensile rubber part, when hydraulic pressure transmission and sealing return operation are carried out between the upper end cover and the lower end cover, the basic rubber part is extruded and deformed, and the edge of the basic rubber part is pulled, the extension rubber ring can be gradually stressed along with the deformation of the basic rubber part to extend outwards from the inner side of the accommodating groove; therefore, on the premise that the deformable characteristic of the basic rubber part is guaranteed, the pulling force of the basic rubber part to the overlock rubber part is buffered and weakened to a certain degree, and the situation that the edge of the overlock rubber part is excessively pulled, and consequently the positioning ball part is abraded is avoided.

Description

Technical Field

[0001] This utility model relates to the field of brake cup technology, specifically to a brake cup that prevents air leakage. Background Technology

[0002] Brake cups are widely used in the hydraulic brake pump systems of cars, light vehicles, vans, and some trucks. They play a role in pressure transmission and sealing. During installation, the cup is placed between the upper and lower end caps of the brake pump, and the cup is fixed in the middle by bolting the upper and lower end caps. However, after the existing cups are installed in the braking system, they are prone to displacement due to the influence of vehicle operation and the vibration of the braking system itself. This causes the lip of the cup to loosen from the end cap, thus affecting the sealing performance of the cup.

[0003] Therefore, refer to Figure 1 As shown, the prior art sets several rubber balls 12 at the edge of the diaphragm cup, and provides positioning grooves 11 that are adapted to the rubber balls 12 on the corresponding surfaces of the upper and lower ends. In this way, when the diaphragm cup is pressed and fixed between the upper and lower end caps, the rubber balls 12 are inserted into the inner side of the positioning grooves 11, which can effectively prevent the diaphragm cup from easily displacing under the influence of vehicle operation and the vibration of the braking system itself.

[0004] However, when the rubber cup transmits hydraulic pressure and performs sealing return operations between the upper and lower end caps, the middle part of the rubber cup is often squeezed and deformed, and a pulling force is formed on its edge. This causes excessive friction contact between the rubber ball 2 12 and the inner wall of the positioning groove 11. Over time, this causes wear or even breakage of the rubber ball 2 12, which seriously affects its service life. Utility Model Content

[0005] To solve the above-mentioned technical problems, a leak-proof brake cup is provided. This solves the problem in the prior art where the brake cup is often deformed by compression during hydraulic pressure transmission and sealing return operations between the upper and lower end caps, resulting in tensile force on its edges. This causes excessive friction between the rubber ball and the inner wall of the positioning groove, leading to wear and even breakage of the rubber ball over time.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a leak-proof brake cup, comprising a novel tensile rubber component and a plurality of positioning balls distributed around the edge of the novel tensile rubber component;

[0007] The novel tensile rubber component includes a base rubber component and a locking edge rubber component sleeved around the base rubber component. The locking edge rubber component has a receiving groove on its inner circumferential surface, and the receiving groove has an extension portion inside.

[0008] The extended portion is an extended rubber ring with a corrugated longitudinal section. The inner and outer walls of the extended rubber ring are fixedly connected to the outer wall of the base rubber component and the innermost inner wall of the locking edge rubber component, respectively.

[0009] The positioning ball component includes a rubber ball fixedly embedded in the inner wall of the edge of the locking rubber component, an oil storage tank vertically penetrating the inner wall of the rubber ball, two mounting nozzles detachably disposed in the openings at both ends of the oil storage tank, and a one-way valve built into the mounting nozzle. The corresponding ends of the two oil storage tanks are open, and the closed ends of the oil storage tanks are provided with liquid outlets.

[0010] Preferably, the extended rubber ring is mainly made of neoprene rubber.

[0011] Preferably, the outer wall of the mounting nozzle is threaded with a fixing sleeve that is fixedly connected to the inner wall of the oil storage tank.

[0012] Preferably, the closed end of the mounting nozzle also has a horizontal groove.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] (1) By setting up a new type of tensile rubber component, when it transmits hydraulic pressure and performs sealing return operations between the upper and lower end caps, the base rubber component will be squeezed and deformed, and a pull will be formed at its edge. The extension rubber ring can gradually be stressed and extend outward from the inside of the receiving groove along with the deformation of the base rubber component. Thus, under the premise of ensuring the deformable characteristics of the base rubber component, the pull force of the base rubber component on the locking edge rubber component is buffered and weakened to a certain extent, avoiding excessive tension at the edge of the locking edge rubber component, which would lead to wear of the positioning ball component.

[0015] (2) By setting the positioning ball, when the locking edge rubber part is stretched, the positioning ball part and the inner wall of the positioning groove are in excessive contact, the rubber ball one in the positioning ball part can be relatively squeezed and deformed, and press the inner cavity of the oil storage tank, so that the one-way valve opens under pressure. In this way, the lubricating oil stored in the oil storage tank can be squeezed into the gap between the positioning groove and the rubber ball one, increasing the lubricity between the positioning groove and the rubber ball one, and reducing wear. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the connection structure between the existing leather bowl and the upper and lower end caps of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the novel tensile rubber component of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the locking rubber component of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the rubber ball of this utility model.

[0020] The numbers on the map are:

[0021] 1. Basic rubber parts; 2. Locking edge rubber parts; 3. Receiving groove; 4. Extended rubber ring; 5. Rubber ball one; 6. Oil reservoir; 7. Fixing sleeve; 8. Mounting nozzle; 9. One-way valve; 10. Slotted groove; 11. Positioning groove; 12. Rubber ball two. Detailed Implementation

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0023] Reference Figure 1-4 As shown, a leak-proof brake cup includes a novel tensile rubber component and several positioning balls distributed around the edge of the novel tensile rubber component;

[0024] When the new tensile rubber component is pressed and fixed between the upper and lower end caps, the positioning ball is inserted into the inner side of the positioning groove 11. This can prevent the new tensile rubber component from easily shifting under the influence of vehicle operation and the vibration of the braking system itself.

[0025] Specifically, refer to Figure 3 As shown, it is worth noting that the new tensile rubber component includes a base rubber component 1 and a locking edge rubber component 2 sleeved around the base rubber component 1. The inner circumferential surface of the locking edge rubber component 2 is provided with a receiving groove 3, and the receiving groove 3 has an extension portion inside.

[0026] The extended part is an extended rubber ring 4 with a corrugated longitudinal section. The inner and outer walls of the extended rubber ring 4 are fixedly connected to the outer wall of the basic rubber part 1 and the innermost inner wall of the locking rubber part 2, respectively.

[0027] By setting up a new type of tensile rubber component, when it transmits hydraulic pressure and performs sealing return operations between the upper and lower end caps, the base rubber component 1 will be compressed and deformed, and its edges will be stretched. The extension rubber ring 4 can gradually be stressed and extend outward from the inside of the receiving groove 3 along with the deformation of the base rubber component 1. Thus, while ensuring the deformability of the base rubber component 1, it can buffer and weaken the tensile force of the base rubber component 1 on the locking edge rubber component 2 to a certain extent, and avoid excessive tension at the edge of the locking edge rubber component 2, which would lead to wear of the positioning ball component.

[0028] Furthermore, referring to Figure 2 and Figure 4 As shown, it is worth noting that the extended rubber ring 4 is mainly made of neoprene rubber;

[0029] Neoprene rubber has high elasticity and tensile and tear resistance, which can effectively improve the performance of the extended rubber ring 4.

[0030] In addition, refer to Figure 2 and Figure 4 As shown, it is worth noting that the positioning ball component includes a rubber ball 5 fixedly embedded in the inner wall of the edge of the locking rubber component 2, an oil storage tank 6 vertically penetrating the inner wall of the rubber ball 5, two mounting nozzles 8 detachably disposed in the openings at both ends of the oil storage tank 6, and a one-way valve 9 built into the mounting nozzles 8. The corresponding ends of the two oil storage tanks 6 are open, and the closed ends of the oil storage tanks 6 are provided with liquid outlets.

[0031] By setting up the positioning ball, when the locking edge rubber part 2 is stretched, causing the positioning ball to make excessive contact with the inner wall of the positioning groove 11, the rubber ball 5 in the positioning ball can be relatively squeezed and deformed, and press the inner cavity of the oil storage tank 6, so that the one-way valve 9 opens under pressure. In this way, the lubricating oil stored in the oil storage tank 6 can be squeezed into the gap between the positioning groove 11 and the rubber ball 5, increasing the lubricity between the positioning groove 11 and the rubber ball 5 and reducing wear.

[0032] Furthermore, referring to Figure 4 As shown, it is worth noting that the outer wall of the mounting nozzle 8 is threaded with a fixing sleeve 7 that is fixedly connected to the inner wall of the oil storage tank 6.

[0033] The closed end of the nozzle 8 is also provided with a horizontal groove 10;

[0034] With the slot 10 and the fixing sleeve 7 in place, a flathead screwdriver can be used to insert its flat end into the slot 10. Then, by turning the knob, the mounting nozzle 8 can be turned simultaneously, causing the mounting nozzle 8 to exit the inside of the fixing sleeve 7 under the threaded structure, thus opening the inside of the oil reservoir 6. This makes it convenient to manually add lubricating oil to the oil reservoir 6.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leak-proof brake cup, characterized in that: It includes a novel tensile-resistant rubber component and several positioning balls distributed around the edge of the novel tensile-resistant rubber component; The novel tensile rubber component includes a base rubber component (1) and a locking edge rubber component (2) sleeved around the base rubber component (1). The locking edge rubber component (2) has a receiving groove (3) on its inner circumferential surface, and the receiving groove (3) has an extension portion inside. The extended part is an extended rubber ring (4) with a corrugated longitudinal section. The inner and outer walls of the extended rubber ring (4) are fixedly connected to the outer wall of the base rubber part (1) and the innermost inner wall of the locking edge rubber part (2), respectively. The positioning ball component includes a rubber ball (5) fixedly embedded in the inner wall of the edge of the locking rubber component (2), an oil storage tank (6) vertically penetrating the inner wall of the rubber ball (5), two mounting nozzles (8) respectively detachably disposed in the openings at both ends of the oil storage tank (6), and a one-way valve (9) built into the mounting nozzle (8). The corresponding ends of the two oil storage tanks (6) are open, and the closed end of the oil storage tank (6) is provided with a liquid outlet.

2. The air-proof brake cup according to claim 1, characterized in that, The extended rubber ring (4) is mainly made of chloroprene rubber.

3. The air-proof brake cup according to claim 1, characterized in that, The outer wall of the mounting nozzle (8) is threaded with a fixing sleeve (7) that is fixedly connected to the inner wall of the oil storage tank (6).

4. The air-proof brake cup according to claim 1, characterized in that, The closed end of the mounting nozzle (8) is also provided with a horizontal groove (10).

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