Parking brake with double-connection structure

Abstract

The utility model relates to a parking brake connecting structure, and belongs to the technical field of automobile brakes. The first connecting structure and the second connecting structure are fixedly connected with the two sides of the caliper body respectively, the hexagonal flange bolt is connected with the caliper body in a threaded mode, the flange end face makes contact with the front end face of the caliper body, a polished rod of the hexagonal flange bolt penetrates through a through hole of the friction plate lining plate, and the friction plate moves in the axial direction of the polished rod of the hexagonal flange bolt. The brake caliper has the advantages that the structure is novel, the brake caliper is connected with the vehicle wheel edge connecting plate through the connecting bolt, the rubber spring and the connecting nut, the friction plate is connected with the brake caliper body through the bolt and the magnet, parts such as a brake caliper support, a guide pin and a guide pin dustproof sleeve are omitted, the cost is reduced by reducing the parts, and the structure is compact; the device has the characteristics of small size, high braking stability and the like, and can improve the performance and reliability of parking brake products.

Description

Technical Field

[0001] This utility model belongs to the field of automotive brake technology, specifically relating to a parking brake connection structure. Background Technology

[0002] The parking brake is the braking actuator in a vehicle's braking system and a key component of that system. Currently, most transport vehicles in China use floating calipers for their parking brakes. These floating calipers are connected to the wheel rim plate via a bracket. For example... Figure 4 The floating caliper E can move axially relative to the brake disc via the guide pin A. The guide pin A is covered with a guide pin dust cover B. The friction pad D is mounted on the bracket C. However, some heavy-duty vehicles have very little space to mount the parking brake at the wheel side, making it difficult to arrange the parking brake using this bracket and guide pin connection. Summary of the Invention

[0003] This utility model provides a parking brake with a dual-connection structure to solve the problem that the space for mounting parking brakes at the wheelside of heavy-duty vehicles is very small, which makes it difficult to arrange existing parking brakes that use brackets and guide pins.

[0004] The technical solution adopted by this utility model includes a clamp body, a first connecting structure, a second connecting structure, a friction plate, and a hexagonal flange bolt. The first connecting structure and the second connecting structure are fixedly connected to both sides of the clamp body, and the hexagonal flange bolt is connected to the clamp body by a thread. The flange end face contacts the front end face of the clamp body, and the smooth rod of the hexagonal flange bolt passes through the through hole of the friction plate liner. The friction plate moves axially along the smooth rod of the hexagonal flange bolt.

[0005] The clamp body includes a body, a piston assembly, a disc spring, an end cap, a small retaining ring, a small sealing ring, a large sealing ring, and a large retaining ring. The piston assembly is assembled in the main hole of the body, the disc spring is installed between the piston assembly and the end cap, the large sealing ring and the large retaining ring are installed in the rear groove of the body, and the small sealing ring and the small retaining ring are installed in the front groove of the body. The large sealing ring, the large retaining ring, the small sealing ring, and the small retaining ring cooperate with the piston assembly to form a sealing cavity.

[0006] The piston assembly includes a first piston, a second piston, and an adjusting bolt, wherein the second piston is installed in the first piston hole, the rear of the adjusting bolt is threadedly connected to the first piston, and the front end is abutted against the second piston.

[0007] The disc springs are stacked concave to concave.

[0008] The connection structure one and connection structure two have the same structure.

[0009] The first connection structure includes a connecting bolt, a first retaining ring, a rubber spring, a second retaining ring, and a connecting nut. The rubber spring wraps around the first and second retaining rings on both sides, and the rear end of the connecting bolt passes through the first retaining ring, the rubber spring, and the second retaining ring, while the front end is threaded to the connecting nut. The middle part is used to connect with the clamp body and the vehicle wheel end connecting plate.

[0010] The first and second retaining rings provide limiting protection for the compression of the rubber spring.

[0011] The rubber spring material is polyurethane rubber.

[0012] The connecting bolts are made of 40Cr material.

[0013] The friction plate includes an inner friction plate, an inner friction plate liner, an inner friction plate liner fixing magnet, an outer friction plate, an outer friction plate liner, and an outer friction plate liner fixing magnet. The inner friction plate is fixedly connected to the inner friction plate liner, and the inner friction plate liner fixing magnet is installed in the second piston hole of the clamp body, through which the inner friction plate liner is connected to the second piston. The outer friction plate is fixedly connected to the outer friction plate liner, and the outer friction plate liner fixing magnet is installed in the hole of the front claw of the clamp body, through which the outer friction plate liner is connected to the clamp body.

[0014] The advantages of this utility model are its novel structure. The brake caliper is connected to the vehicle wheel-side connecting plate through connecting bolts, rubber springs, and connecting nuts. The friction pad is connected to the brake caliper body through bolts and magnets. The brake caliper bracket, guide pin, guide pin dust cover, and other parts are eliminated. The cost is reduced by reducing the number of parts. The structure is compact and has the characteristics of small size and high braking stability, which can improve the performance and reliability of parking brake products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the clamp body and friction plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the current floating clamp with a support frame. Detailed Implementation

[0019] It includes a clamp body 1, a first connection structure 2, a second connection structure 3, a friction plate 4, and a hexagonal flange bolt 5. The first connection structure 2 and the second connection structure 3 are fixedly connected to both sides of the clamp body 1, respectively. The hexagonal flange bolt 5 is connected to the clamp body 1 by threads. The flange end face contacts the front end face of the clamp body. The smooth rod of the hexagonal flange bolt 5 passes through the through hole of the friction plate 4 liner, and the friction plate moves axially along the smooth rod of the hexagonal flange bolt.

[0020] The clamp body 1 includes a body 101, a piston assembly 102, a disc spring 103, an end cap 104, a small retaining ring 105, a small sealing ring 106, a large sealing ring 107, and a large retaining ring 108. The piston assembly 102 is assembled in the main hole of the body 101. The disc spring 103 is installed between the piston assembly 102 and the end cap 104. The large sealing ring 107 and the large retaining ring 108 are installed in the rear groove of the body 101. The small sealing ring 106 and the small retaining ring 105 are installed in the front groove of the body 101. The large sealing ring 107, the large retaining ring 108, the small sealing ring 106, and the small retaining ring 105 cooperate with the piston assembly 102 to form a sealing cavity.

[0021] The piston assembly 102 includes a first piston 10201, a second piston 10202, and an adjusting bolt 10203. The second piston 10202 is installed in the hole of the first piston 10201. The rear part of the adjusting bolt 10203 is threadedly connected to the first piston 10201, and the front end is abutted against the second piston 10202.

[0022] The disc springs 103 are stacked concave to concave.

[0023] The connection structure 1, 2 and the connection structure 2, 3 have the same structure.

[0024] The connection structure 2 includes a connecting bolt 201, a first retaining ring 202, a rubber spring 203, a second retaining ring 204, and a connecting nut 205. The rubber spring 203 wraps around the first retaining ring 202 and the second retaining ring 204 on both sides. The rear end of the connecting bolt 201 passes through the first retaining ring 202, the rubber spring 203, and the second retaining ring 204, and the front end is threaded to the connecting nut 205. The middle part is used to connect with the clamp body 1 and the vehicle wheel end connecting plate 6.

[0025] The first and second retaining rings provide limiting protection for the compression of the rubber spring.

[0026] The rubber spring 203 is made of polyurethane rubber.

[0027] The connecting bolt 201 is made of 40Cr material.

[0028] The friction plate 4 includes an inner friction plate 401, an inner friction plate liner 402, an inner friction plate liner fixing magnet 403, an outer friction plate 404, an outer friction plate liner 405, and an outer friction plate liner fixing magnet 406. The inner friction plate 401 is fixedly connected to the inner friction plate liner 402. The inner friction plate liner fixing magnet 403 is installed in the hole of the second piston 10202 of the clamp body 1, through which the inner friction plate liner 402 is connected to the second piston. The outer friction plate 404 is fixedly connected to the outer friction plate liner 405. The outer friction plate liner fixing magnet 406 is installed in the hole of the front claw of the clamp body 1, through which the outer friction plate liner 405 is connected to the clamp body 1.

[0029] Working principle

[0030] The connecting bolts, rubber springs, and connecting nuts in connection structure 1 and connection structure 2 are used to connect to the vehicle wheel side plate. The caliper body can move axially relative to the brake disc through the connecting bolts and rubber springs. The friction pads are connected to the caliper body through bolts and magnets, eliminating parts such as brake caliper brackets, guide pins, and guide pin dust covers.

[0031] When the vehicle is off and not in operation, the spring force of the disc spring 103 pushes the first piston 10201, which in turn pushes the adjusting bolt 10203 and the second piston 10202 forward. The second piston 10202 pushes the inner friction pad 401 to press against one side of the brake disc 7 to generate friction. The reaction force causes the caliper 1 to compress the rubber spring and move axially, causing the brake caliper to float and drive the outer friction pad 404 to press against the other side of the brake disc 7 to generate friction. This friction prevents the brake disc from rotating, and the brake disc then prevents the wheel from rotating to apply the parking brake.

[0032] Before the vehicle moves, the hydraulic system fills the space between the main body 101, the first piston 10201, the small seal ring 106 and the large seal ring 107 with pressurized oil. The first piston 10201 is compressed by the hydraulic pressure to the disc spring 103. At this time, the second piston 10202 is no longer pushed by the adjusting bolt 10203 and the first piston 10201, the friction pads no longer press against the brake disc 7, and the parking brake is released.

Claims

1. A parking brake with a dual-connection structure, characterized in that: It includes a clamp body, a first connection structure, a second connection structure, a friction plate, and a hexagonal flange bolt. The first connection structure and the second connection structure are fixedly connected to both sides of the clamp body, respectively. The hexagonal flange bolt is connected to the clamp body by threads, with the flange end face contacting the front end face of the clamp body. The smooth rod of the hexagonal flange bolt passes through the through hole of the friction plate liner, and the friction plate moves axially along the smooth rod of the hexagonal flange bolt.

2. A parking brake with a dual-connection structure according to claim 1, characterized in that: The clamp body includes a body, a piston assembly, a disc spring, an end cap, a small retaining ring, a small sealing ring, a large sealing ring, and a large retaining ring. The piston assembly is assembled in the main hole of the body, the disc spring is installed between the piston assembly and the end cap, the large sealing ring and the large retaining ring are installed in the rear groove of the body, and the small sealing ring and the small retaining ring are installed in the front groove of the body. The large sealing ring, the large retaining ring, the small sealing ring, and the small retaining ring cooperate with the piston assembly to form a sealing cavity.

3. A parking brake with a dual-connection structure according to claim 2, characterized in that: The piston assembly includes a first piston, a second piston, and an adjusting bolt, wherein the second piston is installed in the first piston hole, the rear of the adjusting bolt is threadedly connected to the first piston, and the front end is abutted against the second piston.

4. A parking brake with a dual-connection structure according to claim 2, characterized in that: The disc springs are stacked concave to concave.

5. A parking brake with a dual-connection structure according to claim 1, characterized in that: The connection structure one and connection structure two have the same structure.

6. A parking brake with a dual-connection structure according to claim 5, characterized in that: The first connection structure includes a connecting bolt, a first retaining ring, a rubber spring, a second retaining ring, and a connecting nut. The rubber spring wraps around the first and second retaining rings on both sides, and the rear end of the connecting bolt passes through the first retaining ring, the rubber spring, and the second retaining ring, while the front end is threaded to the connecting nut. The middle part is used to connect with the clamp body and the vehicle wheel end connecting plate.

7. A parking brake with a dual-connection structure according to claim 6, characterized in that: The first and second retaining rings provide limiting protection for the compression of the rubber spring.

8. A parking brake with a dual-connection structure according to claim 6, characterized in that: The rubber spring material is polyurethane rubber.

9. A parking brake with a dual-connection structure according to claim 6, characterized in that: The connecting bolts are made of 40Cr material.

10. A parking brake with a dual-connection structure according to claim 1, characterized in that: The friction plate includes an inner friction plate, an inner friction plate liner, an inner friction plate liner fixing magnet, an outer friction plate, an outer friction plate liner, and an outer friction plate liner fixing magnet. The inner friction plate is fixedly connected to the inner friction plate liner, and the inner friction plate liner fixing magnet is installed in the second piston hole of the clamp body, through which the inner friction plate liner is connected to the second piston. The outer friction plate is fixedly connected to the outer friction plate liner, and the outer friction plate liner fixing magnet is installed in the hole of the front claw of the clamp body, through which the outer friction plate liner is connected to the clamp body.

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