Self-compensating brake caliper

Abstract

The utility model discloses a self-compensating brake caliper which comprises a guide pin, a brake pad steel backing is installed on the outer wall of the guide pin, a brake friction plate is fixedly connected to one side of the brake pad steel backing, an installation support plate is fixedly connected to the outer wall of the guide pin, and a dustproof cap is arranged on the outer wall of the side, away from the installation support plate, of the guide pin in a sleeved mode. The number of the dustproof caps is two, the number of the brake pad steel backs is two, and the brake pad steel back on the left side is connected to the outer wall of the guide pin in a sliding mode. By arranging the parking adjusting assembly and the piston assembly, after a brake friction plate is abraded, the parking adjusting assembly can rotate under the action of a parking pull wire, a spherical ball arranged in the ball assembly pushes a parking adjusting screw rod to move towards a brake disc, then the piston assembly is pushed, the piston assembly pushes a brake plate steel back, and therefore the abrasion gap is made up; and a fixed parking gap is always kept.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile braking, in particular to a self-compensating brake caliper. Background Technique

[0002] The brake caliper mainly relies on the sealing effect of the sealing ring, piston and caliper body to establish hydraulic pressure to push the brake friction plate assembly to clamp the brake disc, so as to provide braking torque to decelerate or stop the vehicle. After braking, the piston returns under the drive of the sealing ring, creating a certain gap between the brake friction plate assembly and the brake disc to ensure the normal rotation of the brake disc and the normal driving or starting of the vehicle.

[0003] However, currently, leisure three-wheel and four-wheel vehicles all adopt mechanical parking mechanisms. When the brake friction pads are worn, due to the inability to perform self-compensation, as the wear of the brake friction pads intensifies, the distance between the parking rocker arm push rod and the piston tail seat rod becomes larger and larger. However, due to the limited stroke of the parking rocker arm, the parking force gradually decreases, and there is a situation where the vehicle cannot be parked. Content of the Utility Model

[0004] The purpose of the utility model is to provide a self-compensating brake caliper to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, a self-compensating brake caliper is provided, including a guide pin. A brake pad steel back is installed on the outer wall of the guide pin. A brake friction pad is fixedly connected to one side of the brake pad steel back. An installation bracket plate is fixedly connected to the outer wall of the guide pin. A dust cap is sleeved on the outer wall of the guide pin on the side far from the installation bracket plate. The number of dust caps is two. The number of brake pad steel backs is two. The left brake pad steel back is slidably connected to the outer wall of the guide pin. A caliper is arranged on the side of the right brake pad steel back far from the brake friction pad. The number of brake friction pads is two. The installation bracket plate is located on the side of the left brake pad steel back far from the brake friction pad. A piston assembly is fixedly connected to the side of the left brake pad steel back far from the brake friction pad. A parking adjustment assembly is installed on the inner wall of the piston assembly. A parking bracket base is sleeved on the outer wall of the parking adjustment assembly on the side far from the piston assembly. A circlip is fixedly connected to the outer wall of the piston assembly. The piston assembly and the caliper are fixedly connected by a tubing bolt. A bleed valve is fixedly connected to the inner wall of the caliper. The parking bracket base and the caliper are fixedly connected by a parking base fixing bolt.

[0006] According to the self-compensating brake caliper described above, the piston assembly includes an adjusting nut and a piston body. The adjusting nut is fixedly connected to the inner wall of the piston body, and threads are provided on the inner wall of the adjusting nut.

[0007] According to the self-compensating brake caliper described above, the outer wall of the piston body is fixedly connected to the brake pad steel back.

[0008] According to the self-compensating brake caliper described above, the parking adjustment assembly includes a spring seat, a parking rocker arm shaft, a parking adjustment screw, and a ball assembly. A snap ring is sleeved on the outer wall of the spring seat. The parking rocker arm shaft is rotatably connected to the inner wall of the spring seat. A parking adjustment screw is slidably connected to the inner wall of the side of the parking rocker arm shaft away from the spring seat.

[0009] According to the self-compensating brake caliper described above, the inner wall of the adjusting nut is matched with the parking adjustment screw, and the ball assembly is fixedly connected to the inner wall of the spring seat.

[0010] According to the self-compensating brake caliper described above, the ball assembly includes a ball disc, a ball groove, and spherical balls. The inner wall of the ball disc is provided with a ball groove, and the spherical balls are rotatably connected to the inner wall of the ball groove.

[0011] According to the self-compensating brake caliper described above, the number of the spherical balls is three.

[0012] The beneficial effects of the present utility model: By providing a parking adjustment assembly and a piston assembly, since the parking adjustment assembly is provided inside the piston assembly, when the brake friction pads are worn, the parking adjustment assembly will rotate under the action of the parking cable. The spherical balls provided in the ball assembly push the parking adjustment screw to move towards the brake disc direction, and then push the piston assembly. The piston assembly pushes the steel back of the brake pad, thereby compensating for the wear gap and always maintaining a fixed parking gap.

[0013] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0014] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0015] Figure 1 is a three-dimensional structure diagram of the self-compensating brake caliper of the present utility model;

[0016] Figure 2 is a cross-sectional view of the self-compensating brake caliper of the present utility model;

[0017] Figure 3 is an exploded view of the self-compensating brake caliper of the present utility model;

[0018] Figure 4 is a cross-sectional connection view of the parking adjustment assembly and the piston assembly of the self-compensating brake caliper of the present utility model;

[0019] Figure 5 is a top view of the ball assembly of the self-compensating brake caliper of the present utility model;

[0020] Legend Explanation:

[0021] 1. Mounting Bracket Plate; 2. Caliper; 3. Brake Friction Lining; 4. Brake Lining Steel Backing; 5. Guide Pin; 6. Bleeder Valve; 7. Oil Pipe Bolt; 8. Dust Cap; 9. Snap Ring; 10. Parking Bracket Base; 11. Parking Rocker Arm; 12. Parking Return Spring; 13. Parking Base Fixing Bolt; 14. Parking Adjustment Assembly; 15. Piston Assembly; 141. Spring Seat; 142. Parking Rocker Arm Shaft; 143. Parking Adjustment Screw; 144. Ball Component; 1441. Ball Disc; 1442. Ball Groove; 1443. Spherical Ball; 151. Adjusting Nut; 152. Piston Body. Detailed Implementation Manner

[0022] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be construed as a limitation on the protection scope of the present invention.

[0023] Embodiment:

[0024] Refer to Figures 1 to 5 , the self-compensating brake caliper of the embodiment of the present invention includes a guide pin 5. A brake lining steel backing 4 is installed on the outer wall of the guide pin 5. One side of the brake lining steel backing 4 is fixedly connected with a brake friction lining 3. An installation bracket plate 1 is fixedly connected to the outer wall of the guide pin 5. A dust cap 8 is sleeved on the outer wall of the guide pin 5 away from the installation bracket plate 1. The number of dust caps 8 is two, and the number of brake lining steel backings 4 is two. The left brake lining steel backing 4 is slidably connected to the outer wall of the guide pin 5. A caliper 2 is provided on the side of the right brake lining steel backing 4 away from the brake friction lining 3. The number of brake friction linings 3 is two. The installation bracket plate 1 is located on the side of the left brake lining steel backing 4 away from the brake friction lining 3. A piston assembly 15 is fixedly connected to the side of the left brake lining steel backing 4 away from the brake friction lining 3. A parking adjustment assembly 14 is installed on the inner wall of the piston assembly 15. A parking bracket base 10 is sleeved on the outer wall of the parking adjustment assembly 14 away from the piston assembly 15. A snap ring 9 is fixedly connected to the outer wall of the piston assembly 15. The piston assembly 15 and the caliper 2 are fixedly connected by an oil pipe bolt 7. A bleeder valve 6 is fixedly connected to the inner wall of the caliper 2. The parking bracket base 10 and the caliper 2 are fixed by a parking base fixing bolt 13. By setting a parking return spring 12, it is convenient for the parking rocker arm 11 to return under the elastic force of the parking return spring 12 when the handbrake is released.

[0025] The piston assembly 15 includes an adjusting nut 151 and a piston body 152. The adjusting nut 151 is fixedly connected to the inner wall of the piston body 152, and a thread is provided on the inner wall of the adjusting nut 151.

[0026] The outer wall of the piston body 152 is fixedly connected to the brake pad steel back 4.

[0027] The parking adjustment assembly 14 includes a spring seat 141, a parking rocker arm shaft 142, a parking adjustment screw 143, and a ball assembly 144. A snap ring 9 is sleeved on the outer wall of the spring seat 141. The parking rocker arm shaft 142 is rotatably connected to the inner wall of the spring seat 141. A parking adjustment screw 143 is slidably connected to the inner wall of the parking rocker arm shaft 142 on the side away from the spring seat 141.

[0028] The inner wall of the adjusting nut 151 is matched with the parking adjustment screw 143, and the ball assembly 144 is fixedly connected to the inner wall of the spring seat 141.

[0029] The ball assembly 144 includes a ball disk 1441, a ball groove 1442, and a spherical ball 1443. The inner wall of the ball disk 1441 is provided with a ball groove 1442, and the spherical ball 1443 is rotatably connected to the inner wall of the ball groove 1442.

[0030] The number of the spherical balls 1443 is three. The spherical balls 1443 roll in the ball groove 1442 under the rotation of the parking rocker arm shaft 142, converting the rotational motion into a linear motion. The parking adjustment screw 143 performs a linear motion, pushing the parking adjustment screw 143 to move towards the brake disc direction, and then pushing the piston assembly 15 to complete the compensation for the wear gap.

[0031] Working principle: During parking braking, when the brake friction pad 3 wears, the parking cable pulls the parking rocker arm 11, and the parking rocker arm 11 drives the parking return spring 12 to be compressed. Since the parking rocker arm 11 is pressed into the parking rocker arm shaft 142, the parking rocker arm shaft 142 is driven to rotate. The spherical balls 1443 roll in the ball groove 1442 under the rotation of the parking rocker arm shaft 142, converting the rotational motion of the parking rocker arm shaft 142 into a linear motion of the parking adjustment screw 143. Thus, the parking adjustment screw 143 is pushed to move towards the brake disc direction. The parking adjustment screw 143 rotates into the adjusting nut 151, and the parking adjustment screw 143 pushes the adjusting nut 151, thereby pushing the piston body 152. The piston assembly 15 pushes the brake pad steel back 4, and then pushes the brake friction pad 3 to brake, making up for the wear gap and always maintaining a fixed parking gap. When the handbrake is released, the parking rocker arm 11 returns under the elastic force of the parking return spring 12, and the parking adjustment assembly 14 returns under the elastic force of the parking return spring 12. During this process, the spherical balls 1443 return to the bottom of the groove.

[0032] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can also be made without departing from the purpose of the present invention.

Claims

1. Self-compensating brake caliper, including a guide pin (5), characterized in that, A brake pad steel back (4) is mounted on the outer wall of the guide pin (5). One side of the brake pad steel back (4) is fixedly connected to a brake friction pad (3). An installation support plate (1) is fixedly connected to the outer wall of the guide pin (5). A dust cap (8) is sleeved on the outer wall of the guide pin (5) on the side away from the installation support plate (1). The number of the dust caps (8) is two, and the number of the brake pad steel backs (4) is two. The left brake pad steel back (4) is slidably connected to the outer wall of the guide pin (5). A caliper (2) is arranged on the side of the right brake pad steel back (4) away from the brake friction pad (3). The number of the brake friction pads (3) is two. The installation support plate (1) is located on the side of the left brake pad steel back (4) away from the brake friction pad (3). A piston assembly (15) is fixedly connected to the side of the left brake pad steel back (4) away from the brake friction pad (3). A parking adjustment assembly (14) is installed on the inner wall of the piston assembly (15). A parking support base (10) is sleeved on the outer wall of the parking adjustment assembly (14) on the side away from the piston assembly (15). A circlip (9) is fixedly connected to the outer wall of the piston assembly (15). The piston assembly (15) and the caliper (2) are fixedly connected by an oil pipe bolt (7). A bleed valve (6) is fixedly connected to the inner wall of the caliper (2). The parking support base (10) and the caliper (2) are fixedly connected by a parking base fixing bolt (13). A parking swing arm (11) is fixedly connected to the outer wall of the parking adjustment assembly (14). A parking return spring (12) is arranged between the parking support base (10) and the parking swing arm (11).

2. The self-compensating brake caliper according to claim 1, wherein The piston assembly (15) includes an adjusting nut (151) and a piston body (152). The adjusting nut (151) is fixedly connected to the inner wall of the piston body (152), and threads are provided on the inner wall of the adjusting nut (151).

3. The self-compensating brake caliper according to claim 2, wherein, The outer wall of the piston body (152) is fixedly connected to the brake pad steel back (4).

4. The self-compensating brake caliper according to claim 3, wherein, The parking adjustment assembly (14) includes a spring seat (141), a parking swing arm shaft (142), a parking adjustment screw (143), and a ball assembly (144). A circlip (9) is sleeved on the outer wall of the spring seat (141). The parking swing arm shaft (142) is rotatably connected to the inner wall of the spring seat (141). A parking adjustment screw (143) is slidably connected to the inner wall of the parking swing arm shaft (142) on the side away from the spring seat (141).

5. The self-compensating brake caliper according to claim 4, wherein The inner wall of the adjusting nut (151) cooperates with the parking adjustment screw (143), and the ball assembly (144) is fixedly connected to the inner wall of the spring seat (141).

6. The self-compensating brake caliper according to claim 5, wherein, The ball assembly (144) includes a ball disk (1441), a ball groove (1442), and spherical balls (1443). The ball groove (1442) is provided on the inner wall of the ball disk (1441), and the spherical balls (1443) are rotatably connected to the inner wall of the ball groove (1442).

7. The self-compensating brake caliper according to claim 6, characterized in that, The number of the spherical balls (1443) is three.

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