Rear partition plate of brake booster

Abstract

The utility model relates to a brake booster rear partition plate which comprises a conical partition plate, a center hole is formed in the middle of the partition plate, a plurality of protruding convex hulls are formed on the partition plate on the periphery of the center hole, shaft holes are formed in the convex hulls, and a plurality of positioning holes are formed in the partition plate between the convex hulls. A plurality of mounting holes are formed in the separation disc close to the outer ring of the separation disc; a plurality of annularly distributed fan-ring-shaped clamping plates are arranged on the upper side of the outer ring of the separation disc, a conical ring-shaped sealing piece is clamped and fixed between the outer ring of each clamping plate and the outer ring of the separation disc, and the outer ring of each sealing piece extends out of the outer ring of the separation disc; connecting columns are formed on the lower end faces of the two sides of the outer ring of the clamping plate correspondingly and penetrate through the sealing piece and the installation holes of the separation disc to extend out of the lower surface of the separation disc. According to the rear partition plate of the brake booster, a sealing piece is buckled and clamped based on a snap spring structure, clamping and mounting are convenient, and meanwhile the problem of separation is not prone to occurring.

Description

Technical Field:

[0001] The utility model relates to the technical field of vacuum dampers, and more specifically to a rear partition plate of a brake booster. Background Art:

[0002] For the vacuum booster on an automobile, its principle is to utilize the vacuum generated by the automobile engine and the atmospheric pressure in nature to generate an air pressure difference between the front and rear chambers of the booster, thereby generating boosting force. Therefore, the sealing performance of the vacuum valve port of the vacuum booster has a crucial impact on the performance of the entire booster. Currently, a rear partition plate is provided inside the vacuum booster. The rear partition plate is a component arranged inside the front and rear shells of the booster. The existing rear partition plates are generally conical discs. Generally, an annular sealing gasket is provided on the outer ring of some rear partition plates. The sealing gasket is clamped and fixed together with the rear partition plate through an annular clamping plate. Among them, the clamping is achieved by screwing several screws through the rear partition plate and the sealing gasket onto the rear partition plate. When connecting, multiple screws need to be tightened. One reason is that the rear partition plate is relatively thin, and it is easy to slip the threads during installation and connection. The other reason is that the problem of screw loosening cannot be avoided, and the screws will fall into the vacuum booster. Therefore, it is necessary to optimize and improve the connection structure of the sealing member on the rear partition plate. Summary of the Utility Model:

[0003] The purpose of the present utility model is to provide a rear partition plate of a brake booster aiming at the deficiencies of the prior art. The rear partition plate of the brake booster clamps the sealing member based on a snap ring structure, which is convenient for clamping and installation, and is not easy to break away and separate.

[0004] A rear partition plate of a brake booster includes a conical partition disc. A central hole is formed in the middle of the partition disc. A plurality of protruding bumps are formed on the partition disc around the central hole. A shaft hole is formed in the bump. A plurality of positioning holes are formed on the partition disc between the bumps. A plurality of mounting holes are formed on the partition disc near the outer ring of the partition disc.

[0005] On the upper side of the outer ring of the partition disc, a plurality of fan-shaped clamping plates distributed annularly are provided. A conical ring-shaped sealing member is clamped and fixed between the outer ring of the clamping plate and the outer ring of the partition disc. The outer ring of the sealing member extends out of the outer ring of the partition disc. Connecting columns are respectively formed on the lower end surfaces of both sides of the outer ring of the clamping plate. The connecting columns pass through the mounting holes of the sealing member and the partition disc and extend out of the lower surface of the partition disc. A bayonet is formed on the outer wall of the lower part of the connecting column near the center of the partition disc. An arc-shaped elastic snap ring is clamped in the bayonet. The elastic snap ring presses against the lower surface of the partition disc. A plurality of positioning columns are formed on the inner ring of the clamping plate. The positioning columns are respectively inserted into the positioning holes of the partition disc.

[0006] Preferably, an arc-shaped curling edge is formed by bending the outer ring of the partition disc. A sealing lip with a circular arc-shaped cross-section is formed on the outer ring of the sealing member. The sealing lip presses against the outer wall of the curling edge.

[0007] Preferably, there are at least two positioning holes between the adjacent convex hulls, and the positioning holes are evenly distributed in a ring around the central axis of the partition disc.

[0008] Preferably, the number of mounting holes on the partition disc is even, and the mounting holes are evenly distributed in a ring around the central axis of the partition disc;

[0009] Preferably, the diameter of the connecting column is equal to the aperture of the mounting hole, and the diameter of the positioning column is equal to the aperture of the positioning hole.

[0010] Preferably, the cross-section of the elastic snap ring is circular, and the bayonet on the connecting column is arc-shaped.

[0011] The beneficial effects of the present utility model are as follows:

[0012] The rear partition of this brake booster is based on a snap ring structure to clamp and hold the seal, which is convenient for clamping and installation, and at the same time is not easy to detach and separate. Description of the drawings:

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 2 is a three-dimensional structural schematic diagram of the present utility model from another angle;

[0015] Figure 3 is a top view structural schematic diagram of the present utility model;

[0016] Figure 4 is Figure 3 a rotating sectional view at A-A in

[0017] Figure 5 is Figure 4 a partial enlarged structural schematic diagram at B in

[0018] In the figure: 1. Partition disc; 11. Central hole; 12. Convex hull; 13. Shaft hole; 14. Rotating edge; 15. Positioning hole; 16. Mounting hole; 2. Clamping plate; 21. Positioning column; 22. Positioning column; 23. Bayonet; 3. Flange; 31. Sealing lip; 4. Elastic snap ring. Specific implementation manner:

[0019] Embodiment: See Figures 1 to 5 As shown, a rear partition of a brake booster includes a conical partition disc 1. A central hole 11 is formed in the middle of the partition disc 1. A number of convex hulls 12 protruding upward are formed on the partition disc 1 around the central hole 11. A shaft hole 13 is formed on the convex hull 12. A number of positioning holes 15 are formed on the partition disc 1 between the convex hulls 12. A number of mounting holes 16 are formed on the partition disc 1 near the outer circle of the partition disc 1;

[0020] On the upper side of the outer ring of the separation disc 1, there are several fan-shaped clamping plates 2 distributed in a ring shape. A conical ring-shaped seal 3 is clamped and fixed between the outer ring of the clamping plate 2 and the outer ring of the separation disc 1, and the outer ring of the seal 3 extends out of the outer ring of the separation disc 1; on the lower end faces of both sides of the outer ring of the clamping plate 2, connecting columns 22 are formed respectively. The connecting columns 22 pass through the mounting holes 16 of the seal 3 and the separation disc 1 and extend out of the lower surface of the separation disc 1; on the outer wall of the lower part of the connecting column 22 near one side of the center of the separation disc 1, a bayonet 23 is formed, and an arc-shaped elastic snap ring 4 is clamped in the bayonet 23. The elastic snap ring 4 presses against the lower surface of the separation disc 1. On the inner ring of the clamping plate 2, several positioning columns 21 are formed, and the positioning columns 21 are respectively inserted into the positioning holes 15 of the separation disc 1.

[0021] An arc-shaped flanging 14 is formed by bending the outer ring of the separation disc 1. A sealing lip 31 with a circular arc-shaped cross section is formed on the outer ring of the seal 3. The sealing lip 31 presses against the outer wall of the flanging 14, and the sealing lip 31 is elastically in contact with the inner wall of the vacuum resistance rear shell to achieve separation.

[0022] There are at least two positioning holes 15 between adjacent convex protrusions 12. The positioning holes 15 are evenly distributed in a ring shape around the central axis of the separation disc 1. The positioning holes 15 facilitate the positioning of the clamping plate 2 and can restrain the clamping plate 2.

[0023] The number of mounting holes 16 on the separation disc 1 is an even number, and the mounting holes 16 are evenly distributed in a ring shape around the central axis of the separation disc 1;

[0024] The diameter of the connecting column 22 is equal to the diameter of the mounting hole 16, and the diameter of the positioning column 21 is equal to the diameter of the positioning hole 15.

[0025] The cross section of the elastic snap ring 4 is circular, and the bayonet 23 on the connecting column 22 is arc-shaped.

[0026] Working principle: This structure is the rear partition of a brake booster. The technical point of the rear partition replaces the annular clamping plate with multiple fan-shaped clamping plates 2. Since there are convex protrusions 12 on the separation disc 1, the split-type clamping plate 2 is adopted. Moreover, the clamping plate 2 is positioned with the separation disc 1 through the positioning columns 21. Then, after the connecting column 22 passes through the separation disc 1, it is snap-connected through the elastic snap ring 4. Therefore, the installation is relatively convenient and the problem of loosening is not likely to occur.

[0027] The embodiments are used to illustrate the present invention by way of example, rather than to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of the rights protection of the present invention should be as listed in the claims of the present invention.

Claims

1. A rear partition of a brake booster, comprising a conical separation disc (1), a central hole (11) is formed in the middle of the separation disc (1), and a number of convex protrusions (12) are formed on the separation disc (1) around the central hole (11), and a shaft hole (13) is formed on the convex protrusion (12), characterized in that: A plurality of positioning holes (15) are formed on the separating disk (1) between the convex hulls (12), and a plurality of mounting holes (16) are formed on the separating disk (1) near the outer ring of the separating disk (1); On the upper side of the outer ring of the separating disk (1), a plurality of clamping plates (2) distributed in a ring shape and in a fan shape are provided. A conical ring-shaped seal (3) is clamped and fixed between the outer ring of the clamping plate (2) and the outer ring of the separating disk (1). The outer ring of the seal (3) extends out of the outer ring of the separating disk (1); Connecting columns (22) are respectively formed on the lower end surfaces on both sides of the outer ring of the clamping plate (2). The connecting columns (22) pass through the mounting holes (16) of the seal (3) and the separating disk (1) and extend out of the lower surface of the separating disk (1); A bayonet (23) is formed on the outer wall of the lower part of the connecting column (22) near the center side of the separating disk (1). An arc-shaped elastic snap ring (4) is clamped in the bayonet (23). The elastic snap ring (4) presses against the lower surface of the separating disk (1). A plurality of positioning columns (21) are formed on the inner ring of the clamping plate (2). The positioning columns (21) are respectively inserted into the positioning holes (15) of the separating disk (1).

2. The rear partition of a brake booster according to claim 1, characterized in that: An arc-shaped flanging (14) is formed by bending the outer ring of the separating disk (1). A sealing lip (31) with a circular arc-shaped cross section is formed on the outer ring of the seal (3). The sealing lip (31) presses against the outer wall of the flanging (14).

3. A rear partition of a brake booster according to claim 1, characterized in that: At least two positioning holes (15) are provided between the adjacent convex hulls (12). The positioning holes (15) are evenly distributed in a ring shape around the central axis of the separating disk (1).

4. A rear partition of a brake booster according to claim 3, characterized in that: The number of the mounting holes (16) on the separating disk (1) is an even number. The mounting holes (16) are evenly distributed in a ring shape around the central axis of the separating disk (1).

5. The rear partition of a brake booster according to claim 4, characterized in that: The diameter of the connecting column (22) is equal to the aperture of the mounting hole (16), and the diameter of the positioning column (21) is equal to the aperture of the positioning hole (15).

6. The rear partition of a brake booster according to claim 1, characterized in that: The cross section of the elastic snap ring (4) is circular, and the bayonet (23) on the connecting column (22) is arc-shaped.

Images