CN203453345U - Silica gel guide lining for automobile brake calipers - Google Patents

Abstract

The utility model relates to a silica gel guide lining for automobile brake calipers. A body of the guide lining is cylindrical and is provided with an outer circle face and an inner circle face. Grooves are uniformly distributed in the axial direction of the outer circle face. The two ends of the body are provided with guide chamfers. The front ends of the guide chamfers are provided with small straight faces. According to the guide lining, due to the fact that the guide lining structure is reasonably designed, the product yield is greatly improved, the product production efficiency is improved, and the production cost is lowered. As a guide locating mechanism with the square section is designed, the coaxiality of the inner circle face and the outer circle face of the guide lining is ensured. The implementation effect of the guide lining is remarkable through verification of actual production.

Description

Automobile brake clamp silica gel guide bush

Technical field

The utility model relates to a kind of auto parts and components, is specifically related to automobile brake clamp silica gel guide bush, belongs to automobile technical field.

Background technique

The inner circle of guide bush is contained on brake-caliper support guide finger, and its cylindrical is contained on caliper.During brake caliper work, oil pressure promotes piston driving friction plate and caliper bracket moves, and makes friction plate hold brake disc braking tightly.In moving process, piston and cylinder body need keeping parallelism, can not be eccentric; When piston and cylinder body bias, gently make seal ring rapid wearing in caliper, cause the brake caliper life-span to be reduced; Heavy can cause piston and cylinder body friction, cause braking failure.The effect of guide bush is keeping parallelism while guaranteeing that piston moves in cylinder body, there will not be bias; So guide bush plays key effect to the life-span of brake caliper and Security.Similar products are produced the coaxality that cannot guarantee the inside and outside circle of this product due to mould orientation problem at home, thereby the life-span of clamp is reduced; Domestic this series products sizing material is to adopt EPDM(Ethylene-Propylene-Diene Monomer, ethylene propylene diene rubber in addition) produce the high temperature requirement of bringing to a halt in the time of cannot meeting sport car high-speed motion and causing.In addition, during this series products of domestic production, mold parting surface is wedge angle, causes product to break in going out mold process, causes up-to-standard rate low, and manufacturing efficiency is not high, and cost is high.

Model utility content

The deficiency that the utility model exists for prior art just, provides a kind of automobile brake clamp silica gel guide bush.

For addressing the above problem, technical solution adopted in the utility model is as follows:

Automobile brake clamp silica gel guide bush, the body of described guide bush is annulus column, body has periphery and inner headed face, on the axial direction of described periphery, is uniformly distributed groove; The two ends of described body arrange guiding chamfering, and the front end of guiding chamfering is provided with little facing directly.

As the improvement of technique scheme, the described little width range of facing directly is: 0.1mm ~ 0.4mm.

As the improvement of technique scheme, the coaxality of described inner headed face and periphery is in 0.06mm.

As the improvement of technique scheme, in described guide bush shaping die, guide-localization mechanism is set, described guide-localization mechanism comprises square guide column and square guide pin bushing, and square guide column cross section is square, and square guide column is inserted in square guide pin bushing and is combined together.

Compared with prior art, implementation result of the present utility model is as follows for the utility model:

Guide bush described in the utility model, by appropriate design guide bush structure, has improved conforming product rate greatly, has improved production efficiency, has reduced cost of production.By the guide-localization mechanism of design square-section, guarantee the coaxality of guide bush inner headed face and periphery.Guide bush verifies by actual production, and implementation result is remarkable.

Accompanying drawing explanation

Fig. 1 is guide bush plan view described in the utility model;

Fig. 2 is the left view in Fig. 1;

Fig. 3 is A place partial enlarged drawing in Fig. 1;

Fig. 4 is guide bush mounting structure schematic diagram described in the utility model;

Fig. 5 is the plan view that in prior art, in guide bush shaping die, directional post coordinates with guide sleeve;

Fig. 6 is the left view in Fig. 5;

Fig. 7 is the plan view that square guide column described in the utility model coordinates with square guide pin bushing;

Fig. 8 is the left view in Fig. 7.

Embodiment

Content of the present utility model is described below in conjunction with specific embodiments.

As shown in Figure 1, be guide bush plan view described in the utility model, Fig. 2 is its left view, Fig. 3 is A place partial enlarged drawing in Fig. 1.Guide bush 20 described in the utility model is made by silica gel material, has solved product non-refractory problem.Described guide bush 20 comprises body 21, and body 21 is annulus column.Body 21 has periphery 25 and inner headed face 26, on the axial direction of periphery 25, be uniformly distributed groove 22, the two ends of body 21 arrange guiding chamfering 23, and the front end of guiding chamfering 23 is provided with littlely faces 24 directly, and little 24 the width d scope faced directly is: 0.1mm ~ 0.4mm.Littlely face 24 directly and effectively improved product depanning, improve conforming product rate, improved production efficiency, reduced cost of production.Guide bush 20 described in the utility model, the precision of the coaxality of inner headed face 26 and periphery 25 is higher, and general control is in coaxality in 0.06mm, and keeping parallelism when assurance piston moves in cylinder body, there will not be bias.

As shown in Figure 4, be guide bush 20 mounting structure schematic diagram described in the utility model.Guide bush 20 described in the utility model is arranged in clamp 30, and periphery 25 contacts with clamp 30.The guide finger 10 of brake-caliper support is arranged in inner headed face 26.

As shown in Figure 5, be plan view that in guide bush shaping die in prior art, directional post coordinates with guide sleeve; Fig. 6 is the left view in Fig. 5.In prior art, guide bush 20, when die for molding, needs to use directional post 50 to coordinate each other location with guide sleeve 40 between upper/lower die.Directional post 50 cross sections are circular, and directional post 50 inserts guide sleeve 40 and is combined together.But because between the inner headed face 26 of guide bush 20 and periphery 25, coaxality is in 0.06mm, the directional post 50 of circular cross-section cannot accurately be located to it.For this reason, in the shaping die of guide bush 20 described in the utility model, the guide-localization mechanism of setting party's tee section.

As shown in Figure 7, be the plan view that square guide column described in the utility model coordinates with square guide pin bushing, Fig. 8 is its left view.Square guide column described in the utility model 70 cross sections are square, and square guide column 70 is inserted square guide pin bushing 60 and is combined together.So accurately locate, guaranteed the inner headed face 26 of guide bush 20 and the coaxality between periphery 25.

Claims (4)

1. automobile brake clamp silica gel guide bush, the body (21) of described guide bush (20) is annulus column, body (21) has periphery (25) and inner headed face (26), it is characterized in that, is uniformly distributed groove (22) on the axial direction of described periphery (25); The two ends of described body (21) arrange guiding chamfering (23), and the front end of guiding chamfering (23) is provided with little facing directly (24).

2. automobile brake clamp silica gel guide bush as claimed in claim 1, is characterized in that, the width range of described little facing directly (24) is: 0.1mm ~ 0.4mm.

3. automobile brake clamp silica gel guide bush as claimed in claim 1, is characterized in that, the coaxality of described inner headed face (26) and periphery (25) is in 0.06mm.

4. automobile brake clamp silica gel guide bush as claimed in claim 1, it is characterized in that, in described guide bush (20) shaping die, guide-localization mechanism is set, described guide-localization mechanism comprises square guide column (70) and square guide pin bushing (60), square guide column (70) cross section is square, and square guide column (70) is inserted in square guide pin bushing (60) and is combined together.

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