CN210003725U

CN210003725U - guide pin damping bush applied to floating caliper type automobile brake

Info

Publication number: CN210003725U
Application number: CN201920782293.1U
Authority: CN
Inventors: 黄俍; 姜鹏
Original assignee: CSG TRW Chassis Systems Co Ltd
Current assignee: CSG TRW Chassis Systems Co Ltd
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-01-31
Anticipated expiration: 2029-05-28

Abstract

The utility model relates to an be applied to uide pin shock bushing of floating caliper formula car brake, belong to car brake technical field this uide pin shock bushing includes the bush body, be equipped with annular and recess on the periphery wall face of bush body, annular and recess are cut apart into a plurality of bellying I with the periphery wall of bush body, be equipped with the sphere pit on the bellying I, this bush has accepted rubber shock bushing's deformation allowance after the assembly, the pinhole has been UNICOM, the air resistance has been avoided, do benefit to lubricating grease's flow, sliding damping has been reduced, the braking return has been improved and the remaining dragging stagnation of braking has been improved, the adsorptivity to lubricating grease has been strengthened, the lubrication characteristic has been improved, it is lower to break away from sliding resistance after the storage is placed.

Description

guide pin damping bush applied to floating caliper type automobile brake

Technical Field

The utility model belongs to the technical field of the automotive brake, concretely relates to kind are applied to guide pin shock attenuation bush of floating caliper formula automotive brake.

Background

The guide pin damping bush that uses on the present float caliper formula stopper mostly is the tubulose rubber sleeve, during cylinder tubular structure rubber spare emboliaed the guide pin recess promptly, disect insertion support pinhole. Because there is interference elastic deformation between cylinder rubber shock attenuation bush and pinhole, so can seal support pinhole bottom completely, form the air lock and cause braking slip damping too big, calliper return is bad, has brought unusual dragging and rubs or the risk of braking inefficacy from this. In addition, since the grease used for reducing the frictional wear between the guide pin and the bracket pin hole is accumulated in the pin hole, the grease cannot be uniformly distributed, and the flow and lubrication characteristics of the grease are relatively poor.

The current automobile braking technology develops towards the direction of high safety reliability, low drag and low oil consumption loss; optimizing the brake structure, reducing the cost and the failure mode thereof are imperative.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides kinds of guide pin damping bushings applied to floating caliper type automobile brakes to reduce cost and improve safety.

In order to achieve the above purpose, the utility model provides a following technical scheme:

kind be applied to guide pin shock-absorbing bush of floating caliper formula car brake, including the bush body, be equipped with annular and recess on the periphery wall face of bush body, a plurality of digs logical recess around bush body circumference interval along bush body axial and sets up, and a plurality of digs logical annular along bush body axial interval around bush body circumference and sets up.

And , dividing the peripheral wall surface of the bushing body into a plurality of convex surfaces I by the ring grooves and the grooves, and arranging spherical pits on the convex surfaces I.

, thickening the convex surfaces I at the two ends of the bushing body to form convex surfaces II, wherein each convex surface II is positioned on the same circumference and the radius of the circumference is larger than that of the circumference where the convex surface I is positioned.

And , chamfering and transitioning the convex surface II and the end surface of the bushing body.

The beneficial effects of the utility model reside in that:

(1) by arranging the ring groove and the groove, the deformation allowance of the rubber damping bush is borne after assembly; the pin holes are communicated, so that air resistance is avoided, and the lubricating grease can flow conveniently; the sliding damping is reduced, and the brake return and the brake residual dragging are improved.

(2) The spherical pits are arranged on the convex surface I, so that the adsorption of lubricating grease is enhanced, and the uniform flow distribution of gas and liquid inside the pin hole is facilitated; improves the lubricating property, and has lower sliding resistance after being stored and placed.

(3) The structure is optimized, the scale production is facilitated, the production period is short, the efficiency is high, and the manufacturing cost is reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a bushing body;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

figure 4 is a schematic view of the assembly of the bushing body on the guide pin.

Reference numerals:

the novel bushing comprises a bushing body-1, a ring groove-11, a groove-12, a convex surface I-13, a spherical pit-14, a convex surface II-15, a chamfer-16 and a guide pin-2.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Please refer to fig. 1 to 4, which are kinds of guide pin damping bushings applied to floating caliper type automobile brakes, including a bushing body 1, wherein a circumferential wall of the bushing body is provided with a ring groove 11 and a plurality of grooves 12, the plurality of grooves 12 are circumferentially spaced around the bushing body, the plurality of ring grooves 11 are circumferentially spaced around the bushing body, the ring groove 11 and the grooves 12 divide the circumferential wall of the bushing body into a plurality of convex surfaces i 13, the convex surfaces i 13 are provided with spherical pits 14, the convex surfaces i 13 at two ends of the bushing body are thickened to form convex surfaces ii 15, each convex surface ii 15 is located on the same circumference, the circumferential radius R2 of each convex surface is greater than the radius R1 of the circumference where the convex surface i is located, and the chamfer 16 transitions between the convex surfaces ii and the end face of the bushing body.

The bushing body 1 is tubular, and the inner wall side of the bushing body is a smooth rubber cylindrical surface. The peripheral wall surface of the annular groove 11 and the groove 12 is divided to form a plurality of convex surfaces I13, and spherical concave pits 14 are radially sunk on the convex surfaces I13.

The guide pin damping bush is assembled and nested on the annular groove of the guide pin 2 and then assembled in the pin hole of the bracket; the ring groove 11, the groove 12, the convex surface I13, the convex surface II 15 and the spherical concave pit 14 on the outer surface of the bushing body are all contacted with the inner wall of the pin hole of the bracket and lubricating grease thereof; the ring groove 11 is used for bearing the elastic deformation allowance of the bushing body after assembly; the groove 12 is used for communicating cavities at two ends of a support pin hole, which are formed by isolating a guide pin damping bush, so that lubricating grease is guided, and braking failure caused by air resistance clamping stagnation is avoided; protruding face II is in order to realize reliable assembly, and the sphere pit 14 that is located on protruding face I13 is used for the reinforcing to the adsorptivity of lubricating grease, does benefit to the even flow distribution of pinhole inside gas, liquid. The shock-absorbing bush improves the lubrication characteristic and reduces the break-away sliding resistance after storage and placement.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

guide pin damping bush applied to floating caliper type automobile brake comprises a bush body and is characterized in that annular grooves and grooves are formed in the peripheral wall surface of the bush body, a plurality of grooves which are axially dug through along the bush body are circumferentially arranged around the bush body at intervals, and a plurality of annular grooves which are circumferentially dug through around the bush body are axially arranged along the bush body at intervals.
2. The guide pin damper bushing applied to the floating caliper type automobile brake as set forth in claim 1, wherein: the circumferential wall surface of the lining body is divided into a plurality of convex surfaces I by the ring grooves and the grooves, and spherical pits are arranged on the convex surfaces I.
3. The guide pin damping bushing applied to the floating caliper type automobile brake as claimed in claim 2, wherein the protrusion surfaces I at the two ends of the bushing body are thickened to form protrusion surfaces II, and the protrusion surfaces II are located on the same circumference of and have a circumference radius larger than that of the protrusion surface I.
4. The guide pin damper bushing applied to the floating caliper type automobile brake as set forth in claim 3, wherein: and chamfer transition is performed between the convex surface II and the end head surface of the bushing body.