CN219139658U

CN219139658U - Mechanism for reducing drag force of pneumatic disc brake

Info

Publication number: CN219139658U
Application number: CN202223515381.6U
Authority: CN
Inventors: 王语风; 寿轩远; 郝汉清; 李立刚
Original assignee: Zhejiang VIE Science and Technology Co Ltd
Current assignee: Zhejiang VIE Science and Technology Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-06
Anticipated expiration: 2032-12-28

Abstract

The utility model provides a mechanism for reducing drag force of an air disc brake, which comprises a first clamp body (1), a second clamp body (2) and a bracket, wherein the bracket is divided into a left bracket (3) matched with the first clamp body (1) and a right bracket (4) matched with the second clamp body (2); be provided with axial stud hole (6) on pincers body one (1), install in stud hole (6) post (5), install return circle (7) on post (5), the inner wall in post hole (6) is provided with mounting groove (8) that are used for assembling return circle (7), post (5) can be in post hole (6) axial motion and drive return circle (7) deformation accumulation elastic potential energy and return circle (7) do not break away from the cooperation with mounting groove (8), the inner and the support of post (5) are fixed. The device has the advantages of stable return, long service life and the like.

Description

Mechanism for reducing drag force of pneumatic disc brake

Technical Field

The utility model relates to the field of brakes, in particular to a mechanism for reducing drag force of an air pressure disc type brake.

Background

With the rapid development of the car industry, more and more cars enter ordinary families, and with the improvement of the cognition of customers on the cars, the use requirements of the customers on the cars are also higher and higher. For a disc brake, reducing the residual torque of a friction plate relative to a brake disc to reduce fuel consumption and prolonging the service life of the friction plate are one of important indexes for improving braking performance, so that the brake structure capable of reducing the residual torque is generated. Chinese patent CN201320567142.7 discloses a brake mechanism to reduce drag torque that eliminates the original locking pin and pin bushing. The clearance between the pin and the support pin hole in the optimal design guide system combines the pin bushing feature and the pin dust cover to design, the damping part of the pin dust cover is increased, the center of gravity of the shell is arranged in the damping section, the pin is ensured to be in a horizontal state in the pin hole, and the sliding resistance born by the pin during sliding is small.

However, the scheme for reducing the dragging force is very complex to install, has poor fatigue resistance, short service life and inconvenient maintenance.

Disclosure of Invention

The utility model provides a curtain rail guiding structure according to the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a mechanism for reducing drag force of an air disc brake comprises a first clamp body, a second clamp body and a bracket, wherein the bracket is divided into a left bracket matched with the first clamp body and a right bracket matched with the second clamp body; the first pliers body is provided with an axial stud hole, a pin is arranged in the stud hole, a return ring is arranged on the pin, the inner wall of the stud hole is provided with a mounting groove for assembling the return ring, the pin can axially move in the pin hole and drive the return ring to deform and accumulate elastic potential energy, the return ring is not separated from the cooperation with the mounting groove, and the inner end of the pin is fixed with the bracket.

Preferably, the device further comprises a pin bolt, wherein an axial through hole is formed in the middle of the pin, the pin bolt is installed in the through hole and fixedly matched with the pin, the lower end of the pin bolt extends out of the through hole, and the pin bolt is fixed with the support through threads.

Preferably, the clamp further comprises a bushing, wherein the bushing is in interference fit in the pin hole to realize fixed connection between the bushing and the clamp body I; the pin is inserted in the bushing.

Preferably, the pin can move axially along the inner wall of the bushing, and the return ring is a rectangular ring with a rectangular cross section.

Preferably, the bushing is arranged on the right side of the return ring, and a gap exists between the bushing and the pin hole at the right side part of the rectangular ring.

Preferably, the left side and the right side on the left clamp body are respectively provided with a pin and a pin hole.

Preferably, the return ring is a rubber ring, and the rubber ring and the pin are in interference fit.

Preferably, the edges of the mounting groove are provided with chamfers.

The scheme has the following beneficial effects:

the drag force reducing structure designed by the scheme has the advantages of convenience in installation, simplicity in processing of parts, long service life and the like.

Drawings

Fig. 1 is a schematic view of the overall structure of the device.

Fig. 2 is a cross-sectional view of the device.

Fig. 3 is a schematic structural view of a stud bore.

Fig. 4 is a schematic structural view of the mounting groove.

The novel clamping device comprises a first clamping body, a second clamping body, a 3-left bracket, a 4-right bracket, a 5-pin, a 6-pin hole, a 7-return ring, an 8-mounting groove, a 9-pin bolt, a 10-through hole, an 11-bushing and a 12-gap.

Detailed Description

Example 1

A mechanism for reducing drag force of an air disc brake comprises a first clamp body 1, a second clamp body 2 and a bracket, wherein the bracket is divided into a left bracket 3 matched with the first clamp body 1 and a right bracket 4 matched with the second clamp body 2; the pliers body 1 is provided with an axial pin hole 6, a pin 5 is arranged in the pin hole 6, a return ring 7 is arranged on the pin 5, an installation groove 8 for assembling the return ring 7 is formed in the inner wall of the pin hole 6, the pin 5 can axially move in the pin hole 6 and drive the return ring 7 to deform and accumulate elastic potential energy, the return ring 7 is not separated from the fit with the installation groove 8, and the inner end of the pin 5 is fixed with a bracket. In the scheme, the bracket is fixedly connected with the axle, so that the frame, the pin 5 and the sealing ring do not move in the braking process of the structure, and the clamp moves relative to parts such as the pin 5 in the braking process.

Further, the novel anti-theft lock further comprises a pin bolt 9, an axial through hole 10 is formed in the middle of the pin 5, the pin bolt 9 is installed in the through hole 10 and fixedly matched with the pin 5, the lower end of the pin bolt 9 extends out of the through hole 10, and the pin bolt 9 is fixed with the support through threads. The pin bolt 9 is reliably fixed with the bracket.

In order to ensure that the relative sliding between the clamp body and the pin 5 is smoother and more reliable, the structure further comprises a bushing 11, and the bushing 11 is in interference fit in the pin hole 6 to realize the fixed connection between the bushing 11 and the clamp body 1; the pin 5 is inserted into the bush 11. During braking, the caliper body drives the bushing 11 to slide relative to the pin 5.

The pin 5 can move axially along the inner wall of the bushing 11, the return ring 7 is a rectangular ring with a rectangular cross section, and the return ring 7 has a certain width and can accumulate elastic potential energy in the deformation process.

The bushing 11 is arranged on the right side of the return ring 7, and a gap 12 exists between the bushing 11 on the right side part of the rectangular ring and the pin hole 6. The gap 12 can facilitate the deformation of the return ring 7, provide a deformation space and avoid the phenomena of jamming and the like. The end of the pin bolt 9 is provided with a dust cover.

Non-working state: in the state, the air pressure disc brake does not work, the brake block is not contacted with the brake disc, and the return ring 7 is not deformed;

working state: in the state, the braking push plate is stressed to generate thrust to the braking block, so that the braking block 13 is contacted with the braking disc, the braking disc counteracts the braking caliper body to move rightwards, the pin 5 and the bracket are relatively motionless, and the rubber groove is contacted with the rubber ring to act, so that the return ring 7 is deformed;

reset state: the brake push plate is not stressed and does not generate thrust to the brake block, the brake disc works to generate a separate force to the brake block contacted with the brake disc, so that the brake block 13 and the brake push plate are reset, and the brake caliper body is reset under the combined action of the acting force of the brake block and the force generated by deformation of the return ring 7. The left side and the right side on the left clamp body are respectively provided with a pin 5 and a pin hole 6.

The scheme has the following beneficial effects:

Example 2

This embodiment differs from embodiment 1 in that: the return ring 7 is a rubber ring, and the rubber ring and the pin 5 are in interference fit.

Example 3

The difference from the embodiment 1 is that the edge of the mounting groove 8 is provided with a chamfer to reduce damage to the brake caliper body caused by the rubber ring sliding and pressing leftwards due to road jolt or other reasons. The bottom of the mounting groove 8 is shallow on one side, close to the support, of the left-side shallow-right deep slope, and the other side is deep, so that the return ring 7 and the mounting groove 8 are in interference fit at the bottom of the groove on the left side, the tightness of the structure is improved, and oil and dust are prevented from entering the product.

Claims

1. A mechanism for reducing drag force of an air disc brake, comprising: comprises a first clamp body (1), a second clamp body (2) and a bracket, wherein the bracket is divided into a left bracket (3) matched with the first clamp body (1) and a right bracket (4) matched with the second clamp body (2); be provided with axial stud hole (6) on pincers body one (1), install in stud hole (6) post (5), install return circle (7) on post (5), the inner wall in post hole (6) is provided with mounting groove (8) that are used for assembling return circle (7), post (5) can be in post hole (6) axial motion and drive return circle (7) deformation accumulation elastic potential energy and return circle (7) do not break away from the cooperation with mounting groove (8), the inner and the support of post (5) are fixed.

2. A mechanism for reducing drag in an air disc brake as defined in claim 1, wherein: the novel anti-theft lock is characterized by further comprising a pin bolt (9), wherein an axial through hole (10) is formed in the middle of the pin (5), the pin bolt (9) is installed in the through hole (10) and fixedly matched with the pin (5), the lower end of the pin bolt (9) extends out of the through hole (10), and the pin bolt (9) is fixed with a support through thread.

3. A mechanism for reducing drag in an air disc brake as defined in claim 1, wherein: the clamp further comprises a bushing (11), wherein the bushing (11) is in interference fit in the pin hole (6) to realize fixed connection between the bushing (11) and the clamp body I (1); the pin (5) is inserted into the bushing (11).

4. A mechanism for reducing drag in an air disc brake according to claim 3, wherein: the pin (5) can axially move along the inner wall of the bushing (11), and the return ring (7) is a rectangular ring with a rectangular section.

5. A mechanism for reducing drag in an air disc brake as defined in claim 4, wherein: the bushing (11) is arranged on the right side of the return ring (7), and a gap (12) exists between the bushing (11) on the right side part of the rectangular ring and the pin hole (6).

6. A mechanism for reducing drag in an air disc brake as defined in claim 5, wherein: the left side and the right side on the left clamp body are respectively provided with a pin (5) and a pin hole (6).

7. A mechanism for reducing drag in an air disc brake as defined in claim 4, wherein: the return ring (7) is a rubber ring, and the rubber ring and the pin (5) are in interference fit.

8. A mechanism for reducing drag in an air disc brake as defined in claim 1, wherein:

the edge of the mounting groove (8) is provided with a chamfer.

9. A mechanism for reducing drag in an air disc brake as defined in claim 1, wherein: the bottom of the mounting groove (8) is provided with left shallow and right deep inclination, so that the return ring (7) and the mounting groove (8) are in interference fit at the bottom of the groove at the left side.