Vacuum booster assembly with rubber hanging locking plate

Abstract

The utility model relates to a vacuum booster assembly with a rubber hanging locking plate, and belongs to the technical field of automobile braking systems. The rubber hanging locking plate is inserted into two holes in the valve body part, the rear edge of the rubber hanging locking plate is connected to the rear shell air seal in an abutting mode, the front edge of the rubber hanging locking plate is connected to the valve body part in an abutting mode, the rubber hanging locking plate comprises a metal framework, a rubber wrapping layer and a limiting boss, the outer portion of the metal framework is wrapped by the rubber wrapping layer, and the limiting boss is arranged at the contact position of the rubber hanging locking plate and the valve body part. The vacuum booster assembly has the advantages that the structure is novel, and the vacuum booster assembly is in contact with a valve body after being assembled with a product, so that the phenomenon that the lock plate is suspended in the air and collides with the valve body to generate sound in the return process is avoided, and the sound generated in the return process of the vacuum booster meets the requirements of a main engine plant; according to the vacuum booster assembly, under the condition that only the structure of the locking plate is changed, sound generated in the return stroke process of the vacuum booster can be reduced, the return stroke sound in the working process meets the requirements of a main engine plant, and the requirements of customers are met.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive braking systems, and particularly relates to a vacuum booster assembly with a rubber-coated lock piece. Background Art

[0002] The existing conventional 11-inch through-type vacuum booster assembly mainly consists of the following parts: front housing, diaphragm, rear housing riveting component, dust cover, lock piece, rear housing air seal, control valve component, adjusting fork, hexagon nut, clearance pad, pressing block, feedback disc, retaining ring, support pad, sealing washer, return spring, master cylinder push rod, adjusting pad, push rod head and joint seat, as Figure 4 shown. In the original structure of the vacuum booster assembly, after the vacuum booster assembly is assembled, due to feedback from the vehicle factory that the product makes a relatively loud noise when the pedal returns to the original position during the return stroke operation, which is reported as a customer complaint, it is necessary to find out the reason. After analysis, it is found that the metal lock piece (such as Figure 5 、 6 shown) collides with the valve body during the return stroke, resulting in noise. In order to reduce costs and solve the problem of relatively loud noise while ensuring that the 11-inch through-type vacuum booster assembly has fewer redesigned parts, the customer satisfaction is improved. Summary of the Invention

[0003] The utility model provides a vacuum booster assembly with a rubber-coated lock piece to solve the problem of relatively loud noise when the pedal returns to the original position.

[0004] The technical solution adopted by the utility model is: it includes a front housing, a diaphragm, a rear housing riveting component, a rubber-coated lock piece, a rear housing air seal, a valve body component, a dust cover, a control valve component, a hexagon nut, an adjusting fork, a clearance pad, a pressing block, a feedback disc, a retaining ring, a return spring, a sealing washer, a support pad, a push rod head, an adjusting pad, a master cylinder push rod and a joint seat. The rubber-coated lock piece is inserted into two holes on the valve body component, with its rear side abutted against the rear housing air seal and its front side abutted against the valve body component. The rubber-coated lock piece includes a metal skeleton, a rubber wrapping layer and a limiting boss. The outer part of the metal skeleton is wrapped by the rubber wrapping layer, and there is a limiting boss at the contact position between the rubber-coated lock piece and the valve body component.

[0005] The material of the limiting boss is rubber.

[0006] The material of the anti-detachment claw at the lower end of the rubber-coated lock piece is rubber.

[0007] The advantages of the present utility model are novel structure. The material of the lock piece is changed from the original metal to a structure with a metal skeleton wrapped by rubber on the outer layer, and a limiting boss is added. The material of the limiting boss is rubber, which contacts the valve body after being assembled with the product, avoiding the sound generated by the collision between the suspended lock piece and the valve body during the return process, and enabling the sound generated during the return process of the vacuum booster to meet the requirements of the vehicle manufacturer. Compared with the conventional 11-inch through-type vacuum booster assembly, the vacuum booster assembly of the present utility model can reduce the sound generated during the return process of the vacuum booster only by changing the structure of the lock piece, achieving that the return sound during the working process meets the requirements of the vehicle manufacturer and satisfying the customer requirements.

[0008] Compared with the previous designs, the present utility model can well avoid the problems of redesigning the valve body, air valve seat, and control valve components to meet the requirements of the vehicle manufacturer, and has the advantages of quick effect and low cost, providing a good alternative for the research and development of the vacuum booster assembly.

[0009] The present utility model can also be used on different types of 11-inch, 10-inch, and 9-inch through-type vacuum booster assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural view of the present utility model;

[0011] Figure 2 is a schematic structural view of the rubber-coated lock piece of the present utility model;

[0012] Figure 3 is Figure 2 the A-A sectional view of

[0013] Figure 4 is a schematic structural view of the original 11-inch vacuum booster assembly;

[0014] Figure 5 is a schematic structural view of the original lock piece;

[0015] Figure 6 is Figure 5 the left view of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] As Figure 1 、 2As shown in the figure, it includes a front housing 1, a diaphragm 2, a rear housing riveting component 3, a rubber-coated lock piece 4, a rear housing air seal 5, a valve body component 6, a dust cover 7, a control valve component 8, a hexagon nut 9, an adjusting fork 10, a clearance pad 11, a pressing block 12, a feedback disc 13, a retaining ring 14, a return spring 15, a sealing washer 16, a support pad 17, a push rod head 18, an adjusting pad 19, a master cylinder push rod 20, and a joint seat 21. The rubber-coated lock piece 4 is inserted into two holes on the valve body component 6, with its rear side abutted against the rear housing air seal 5 and its front side abutted against the valve body component 6. The rubber-coated lock piece 4 includes a metal skeleton 401, a rubber wrapping layer 402, and a limiting boss 403. The outer part of the metal skeleton 401 is wrapped by the rubber wrapping layer 402, and there is a limiting boss 403 at the contact position between the rubber-coated lock piece 4 and the valve body component 6.

[0017] The material of the limiting boss 403 is rubber.

[0018] As Figure 3 shown in the figure, the material of the anti-dislodging claw 404 at the lower end of the rubber-coated lock piece 4 is rubber.

[0019] During operation, the control valve component 8 is pushed by the brake pedal to drive the valve body in the rear housing riveting component 3 to move forward. During this process, the atmosphere valve port opens, and air enters the atmosphere chamber of the vacuum booster, creating a vacuum pressure difference between the vacuum chamber and the atmosphere chamber, thereby playing a boosting role. The material of the lock piece is changed from the original metal to a structure with a metal as the skeleton and the outer layer of the skeleton wrapped by rubber, and a limiting boss is added. The material of the limiting boss is rubber. After being assembled with the product and contacting the valve body, it avoids the sound generated by the collision between the suspended lock piece and the valve body during the return process, and enables the sound generated during the return process of the vacuum booster to meet the requirements of the vehicle manufacturer.

Claims

1. A vacuum booster assembly with a rubber-mounted locking piece, comprising a front housing, a diaphragm, a rear housing riveted component, a rubber-mounted locking piece, a rear housing gas seal, a valve body component, a dust cover, a control valve component, a hexagonal nut, an adjustment fork, a gap gasket, a pressure block, a feedback plate, a retaining ring, a return spring, a sealing gasket, a support pad, a push rod head, an adjustment pad, a master cylinder push rod and a joint seat, characterized in that: The rubber locking piece is inserted into two holes on the valve body component, with its rear side abutting against the rear shell air seal and its front side connected to the valve body component. The rubber locking piece includes a metal frame, a rubber wrapping layer and a limiting boss, wherein the outside of the metal frame is wrapped by the rubber wrapping layer, and there is a limiting boss at the contact point between the rubber locking piece and the valve body component.

2. A vacuum booster assembly with a rubber-mounted locking piece according to claim 1, characterized in that: The material of the limiting boss is rubber.

3. The vacuum booster assembly with a rubber-mounted locking piece according to claim 1, characterized in that: The material of the anti-fall-out claw at the lower end of the rubber-hanging lock piece is rubber.

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