Automobile caliper guide pin bush and caliper guide pin assembly

Abstract

The utility model discloses an automobile caliper guide pin bush and a caliper guide pin assembly, and belongs to the technical field of automobiles. The automobile caliper body solves the problem that compressed air is instantly formed in a guide hole when brake of an automobile caliper body is released in the prior art. The lining mainly comprises a lining body, a plurality of air guide grooves are formed in the outer circumferential face of the lining body at intervals in the circumferential direction, and the air guide grooves penetrate through the front end and the rear end of the lining body respectively. A plurality of oil storage grooves are formed in the outer circumferential face of the bush body.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile, concretely speaking, especially relate to a kind of automobile caliper guide pin bush and caliper guide pin assembly. BACKGROUND

[0002] The guide pin on caliper is important part connecting caliper body and support, when brake or deceleration, brake caliper body moves along the axial direction of guide pin, and brake deceleration work is implemented, caliper guide pin is installed in guide hole, and guide pin reaches the effect of guiding caliper body by moving along guide hole, bush is generally installed on caliper guide pin, and bush will contact with the inner wall of guide hole during the axial movement of guide pin.

[0003] When brake caliper body is braked and clamped, brake system hydraulic pressure moves caliper body and guide pin assembly to brake disc direction, at this time, low vacuum is formed in guide hole, and low vacuum formed in guide hole will form low resistance to caliper movement, but because brake pressure is 1Mpa-10Mpa, so low vacuum will not affect caliper movement, and finally brake clamping is successfully completed.When brake caliper body is braked and released, brake system pressure is completely released, and caliper piston is automatically reset, brake caliper body and guide pin assembly will be instantaneously moved to the opposite direction of brake disc, at this time, compressed air is formed in guide hole, and certain resistance is formed to caliper movement, which affects the movement of caliper body, and further causes disc drag, and increases drag force. SUMMARY

[0004] The utility model aims at providing a kind of automobile caliper guide pin bush and caliper guide pin assembly to overcome the problem that guide hole will form compressed air instantaneously when brake caliper body is braked and released in prior art.

[0005] The utility model is realized by the following technical scheme, a kind of automobile caliper guide pin bush, including bush body, multiple gas guide grooves are spaced apart on the outer circumferential surface of the bush body along circumferential direction, and the gas guide groove is respectively passed through the front and rear ends of bush body;Multiple oil storage grooves are formed on the outer circumferential surface of the bush body.

[0006] Further, three gas guide grooves are spaced apart on the outer circumferential surface of the bush body along circumferential direction.

[0007] Further, three gas guide grooves are spaced apart on the outer circumferential surface of the bush body along circumferential direction.

[0008] Further, the oil storage groove on the outer circumferential surface of the bush body is distributed in spiral shape.

[0009] Further, three oil storage grooves are arranged between every two adjacent gas guide grooves on the outer circumferential surface of the bush body.

[0010] Further, the bushing body is made of nylon material.

[0011] Further, the air guide groove is a trapezoidal groove.

[0012] A caliper guide pin assembly comprises a guide pin comprising a guide pin rod body, and the above-mentioned automobile caliper guide pin bushing, a ring-shaped groove is formed on one side of the guide pin rod body, and the bushing body is sleeved in the ring-shaped groove.

[0013] Further, the outer diameter of the bushing body is greater than the outer diameter of the guide pin rod body.

[0014] Compared with the prior art, the caliper guide pin assembly has the advantages that:

[0015] 1. The three air guide grooves are formed on the outer circumferential surface of the bushing body in the circumferential direction, so that compressed air is not formed in the guide hole when the guide pin assembly moves along the guide hole, specifically, when the caliper body of the automobile caliper moves in the direction opposite to the brake disc and the guide pin assembly moves instantaneously, the air between the inner end of the guide hole and the bushing is discharged from the air guide groove, so that compressed air is not formed in the guide hole instantaneously, the operation of the caliper is smooth, and the problem of disc drag and increased drag force caused by the formation of compressed air in the guide hole is avoided.

[0016] 2. The plurality of oil storage grooves are formed on the outer circumferential surface of the bushing body, so that the lubricating grease can be supplemented to the bushing in time, the wear of the guide pin assembly and the guide hole is reduced, and the situation that the lubricating grease easily blocks the air guide groove when the lubricating grease is applied in the guide hole is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the bushing body of the utility model;

[0018] Figure 2 is Figure 1 A-A sectional view of the utility model;

[0019] Figure 3 is a structural schematic view of the caliper guide pin assembly of the utility model;

[0020] Figure 4 is a use state view of the utility model.

[0021] In the drawing: 1, bushing body; 2, air guide groove; 3, oil storage groove; 4, guide pin; 5, guide pin rod body; 6, ring-shaped groove. DETAILED DESCRIPTION

[0022] In order to make the person skilled in the art better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor shall belong to the protection scope of the utility model.

[0023] A kind of automobile caliper guide pin bushing, including bushing body 1, multiple gas guide grooves 2 are spaced apart on the outer circumferential surface of the bushing body 1 along circumferential direction, the gas guide groove 2 is respectively through the front and back ends of bushing body 1, the gas guide groove 2 is trapezoidal groove, the vertical section of the gas guide groove 2 of the utility model is trapezoidal.

[0024] Three gas guide grooves 2 are spaced apart on the outer circumferential surface of the bushing body 1 along circumferential direction, three gas guide grooves 2 are equally spaced along circumferential direction.The utility model by the outer circumferential surface of the bushing body 1 along circumferential direction is provided with three gas guide grooves 2, when guide pin 4 assembly moves along guide hole, avoid forming compressed gas in guide hole, specifically, when the caliper body of automobile caliper is in brake release and guide pin 4 assembly moves to brake disc reverse direction instantaneously, air in the inner end of guide hole and bushing will be discharged from gas guide groove 2, avoid forming compressed air in guide hole instantaneously, ensure that the operation of caliper is unobstructed, thereby avoid the problem that disc piece is dragged and the drag force is increased due to the formation of compressed air in guide hole.

[0025] Multiple oil storage grooves 3 are set on the outer circumferential surface of the bushing body 1, the utility model by the outer circumferential surface of the bushing body 1 is provided with multiple oil storage grooves 3, can realize timely supplementing of grease to bushing, reduce the wear of bushing body 1 and guide hole, also avoid the case that lubricating grease is easily blocked in gas guide groove 2 when lubricating grease is applied in guide hole,

[0026] The oil storage groove 3 on the outer circumferential surface of the bushing body 1 is helically distributed, and three oil storage grooves 3 are provided between every two adjacent gas guide grooves 2 on the outer circumferential surface of the bushing body 1.

[0027] The bushing body 1 is made of nylon material. The bushing body 1 has good wear resistance and oil resistance by making the bushing body 1 be made of nylon material.

[0028] A kind of caliper guide pin assembly, including guide pin 4, the guide pin 4 includes guide pin rod body 5, further include the above-mentioned one kind of automobile caliper guide pin bushing, annular groove 6 is set up in one side of the guide pin rod body 5, the bushing body 1 is sleeved in annular groove 6.

[0029] The outer diameter of the bushing body 1 is greater than the outer diameter of the guide pin rod body 5.

Claims

1. A caliper guide pin bushing for an automobile, characterized by, The sleeve body (1) is provided with a plurality of air guide grooves (2) on the outer circumferential surface thereof and spaced apart in the circumferential direction, and the air guide grooves (2) respectively pass through the front and rear ends of the sleeve body (1); a plurality of oil storage grooves (3) are formed on the outer circumferential surface of the sleeve body (1).

2. The automotive caliper guide pin bushing of claim 1, wherein, Three air guide grooves (2) are spaced apart in the circumferential direction on the outer circumferential surface of the sleeve body (1).

3. A vehicle caliper guide pin bushing according to claim 2, wherein, The three air guide grooves (2) are equally spaced apart in the circumferential direction.

4. The automotive caliper guide pin bushing of claim 1, wherein, The oil storage grooves (3) on the outer circumferential surface of the sleeve body (1) are helically distributed.

5. A vehicle caliper guide pin bushing according to claim 4, wherein, Three oil storage grooves (3) are arranged between every two adjacent air guide grooves (2) on the outer circumferential surface of the sleeve body (1).

6. The automotive caliper guide pin bushing of claim 1, wherein, The sleeve body (1) is made of nylon.

7. The automotive caliper guide pin bushing of claim 1, wherein, The air guide grooves (2) are trapezoidal grooves.

8. A calliper guide pin assembly comprising a guide pin (4), the guide pin (4) comprising a guide pin shank (5), characterised in that, The sleeve body (1) is arranged in the annular groove (6) on one side of the guide pin rod body (5).

9. A caliper guide pin assembly as in claim 8, wherein, The outer diameter of the sleeve body (1) is greater than the outer diameter of the guide pin rod body (5).

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