CN2486449Y

CN2486449Y - Bicycle disc brake

Info

Publication number: CN2486449Y
Application number: CN 01248093
Authority: CN
Inventors: 吴凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-06
Filing date: 2001-06-06
Publication date: 2002-04-17
Anticipated expiration: 2011-06-06

Abstract

The disk brake for bicycle features that its sleeve has top block, steel ball and central axle, the sleeve has notch in its inner wall, spiral slideway on the surface of central axle, steel ball and locating block in the slideway and notch, end cover on the end of sleeve, and braking arm on the end of central axle. The auxiliary member is fixed to the inner side of the fork by a U-shaped bolt through a wheel axle, and the bracket for supporting the brake body is fixedly mounted on the auxiliary member by a nut and an auxiliary member bolt. The utility model discloses can provide great brake force, in addition the utility model discloses simple structure, low in manufacturing cost is honest and clean, can be applicable to the bicycle of various grades.

Description

Disk brake of bicycle

The utility model is a kind of bicycle assembly parts, particularly a kind of disk brake of bicycle.

China is a bikedom, and yearly output is about 4,000 ten thousand.But be the ordinary bicycle of low precision mostly.And the braking effect that occurred on the China market in recent years disk brake of bicycle preferably is a kind of from external import, and the ordinary bicycle that still all is not suitable for China from price on the structure uses.Also have a kind of homemade Pan Zha, be used for homemade ordinary bicycle though can adorn, price is also cheap, and Pan Zha compares with import, has unstable properties, shortcomings such as braking force deficiency.It is that homemade ordinary bicycle working accuracy is lower that homemade disk brake of bicycle is braked hypodynamic reason, assembling back brake disc driving surface is beated bigger, this just requires to keep between friction lining and the brake disc bigger spacing, brake cable will be walked very big idle travel when causing brake, the stroke that is to say brake lever has mainly consumed on idle travel, and the stroke of brake lever is limited, has only tens millimeters, and this is the basic reason that causes homemade disk brake of bicycle braking moment deficiency.

The purpose of this utility model provides a kind of later-model disk brake of bicycle, it can overcome existing shortcoming in the prior art, guaranteeing have between brake disc and the friction lining under the prerequisite of big spacing, can make the lock torque of disk brake of bicycle enough big, and simple in structure, with low cost.

The purpose of this utility model is achieved in that it comprises that a side has the U type caliper of sleeve pipe, the opposite side of caliper is equipped with the compensation screw, be installed in the left side in the caliper, right Friction disk is separately fixed at a left side, on the right liner, on a left side, between the right liner V-arrangement pull back spring is housed, sleeve pipe is equipped with pull back spring outward, support and brake cable seat, it is characterized in that being equipped with successively in the sleeve pipe jacking block, steel ball and center shaft, internal surface of sleeve pipe has groove, the center shaft surface has spiral ramp, in slideway and groove steel ball is housed, and in groove locating piece is housed, cannula tip is equipped with end cap, and brake control lever is equipped with in the center shaft end.

Above-mentioned jacking block and center shaft can be made one, and the steel ball in the middle of having omitted.

The line of centers and the axis angle at the spiral slide two ends on above-mentioned center shaft surface are respectively α and β, wherein α≤β.And the slideway quantity on groove on the sleeve pipe and center shaft surface all has one at least.

The above-mentioned lock body of the utility model is connected by an auxiliary with the car fork to be realized, can stick auxiliary bolt of welding or nut at car that is:, and the lock body is fixed on auxiliary bolt or the nut.Perhaps adopt an auxiliary, fix with clevis bolt between auxiliary and the car fork, the lock body is fixed on the auxiliary bolt with the auxiliary one by support.

The utility model has the advantages that: the utility model is according to the different needs of lock torque, adopt the slideway of different helical angles, also can adopt the slideway of stage shape, consume the idle travel that very short brake lever stroke is just finished lock in the time of can making brake, residue just can satisfy the needs that Pan Zha forms big braking force than the brake lever stroke of many parts.So the utility model can provide bigger braking force.The utility model is simple in structure in addition, and is cheap for manufacturing cost, goes for the bicycle of various class.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is described in further detail.

Fig. 1 is a general view of the present utility model.

Fig. 2 is that B among Fig. 1 is to view.

Fig. 3 A is A-A (the removing auxiliary etc.) cutaway view among Fig. 1.

Fig. 3 B is A-A (remove auxiliary etc., center shaft and the jacking block are integrated) cutaway view among Fig. 1.

Fig. 4 is the B-B cutaway view among Fig. 2.

Fig. 5 is that D among Fig. 4 is to view.

Fig. 6 is C-C (the removing brake cable seat etc.) section-drawing among Fig. 3.

Fig. 7 is D-D (the removing brake cable seat etc.) section-drawing among Fig. 3.

Fig. 8 is E-E (the removing brake cable seat etc.) section-drawing among Fig. 3.

Fig. 9 is F-F (the removing brake cable seat etc.) section-drawing among Fig. 3.

Figure 10 is G-G (the removing brake cable seat etc.) cutaway view among Fig. 3.

Figure 11 is that C among Figure 10 is to (removing brake disc etc.) view.

Figure 12 is the surface development of the center shaft among Fig. 3.

By Fig. 1, Fig. 2 and shown in Figure 3, the 11st, the U-shaped caliper, right side at caliper, repay screw 17 by being threaded one to assist, left and

right liner

13 and 15 are housed in the caliper, left and

right friction lining

14 and 16 fixedly are housed respectively on them, the pull back spring 12 that a V-arrangement is arranged between the Friction disk of the left and right sides, brake disc 18 is between the Friction disk of the left and right sides, and right liner and auxilliary repaying have groove and projection between the screw, to prevent the auxilliary screw turns of repaying.The left side of caliper has sleeve pipe, in the inside of sleeve pipe jacking block 9 is housed successively, steel ball 8 and center shaft 2.Jacking block also can be combined into an integral body with center shaft, shown in Fig. 3 B.By Fig. 3 finding, two grooves are arranged in the sleeve pipe, corresponding two slideways opening on center shaft, steel ball 5 is contained in the fluted slideway with center shaft of sleeve pipe, slideway has angle between slideway line of centers and the center shaft at the expansion shape on center shaft surface as shown in figure 12, and right section is α, left side section is β, wherein α≤β.Locating piece 4 is housed in the groove of sleeve pipe, end cap 3 is equipped with in the outer end, the brake control lever 1 that links to each other with bicycle brake line fixedly is housed in the outer end of center shaft, in the outside of sleeve pipe pull back spring 10 is housed, support the support 7 of lock body and brake cable seat 6 fixedly is housed, sleeve pipe can axially slide in the support holes of support, for preventing that sleeve pipe from rotating, outside the caliper sidewall of connector bushing, a boss is set, the corresponding groove that has of support with this boss corresponding position, boss can slide in groove along casing axis, i.e. the suitable feather key of boss and groove and its keyway are shown in Figure 10 and 11.This boss is set and the groove effect is very big, except that preventing that sleeve pipe from rotating, has also increased the supporting width of support, can effectively guarantee lock torque caliper.As seen from Figure 1, pull back spring 19 is housed between brake control lever and brake cable seat.Projection and groove are arranged between end cap and the locating piece,, overcome the resistance turn end cap of projection and groove and auxilliaryly repay screw, can assist and repay the thickness that a left side, Friction disk wear away, make non-braking state friction lining and brake disc maintenance certain spacing in case not-go-end lid rotates.As shown in Figure 3, formed by part 1 to part 17 at the lock body of Pan Zha.By Fig. 1, Fig. 2, Fig. 4, Fig. 5 as seen, have a prong on the auxiliary 20, prong is fixed on the axletree, and auxiliary 20 is installed on car fork inboard by U-bolt 21, nut 24, auxiliary bolt 23 is welded on the auxiliary, and the lock body can be installed on the auxiliary by support auxiliary screw bolt and nut 22.Also can this become mounting means: stick auxiliary bolt of welding or nut at car, the lock body support frame is by nut or be bolted on above-mentioned auxiliary bolt or the nut.

Claims

1, disk brake of bicycle, it comprises that a side has the U type caliper of sleeve pipe, the opposite side of caliper is equipped with the compensation screw, be installed in the left side in the caliper, right friction lining is separately fixed at a left side, on the right liner, on a left side, between the right liner V-arrangement pull back spring is housed, sleeve pipe is equipped with pull back spring outward, support and brake cable seat, it is characterized in that being equipped with successively in the sleeve pipe jacking block, steel ball and center shaft, internal surface of sleeve pipe is fluted, the center shaft surface has spiral ramp, in slideway and groove steel ball is housed, and locating piece is housed, cannula tip is equipped with end cap, and brake control lever is equipped with in the center shaft end.

2,, it is characterized in that jacking block and center shaft also can be combined into an integral body according to the said disk brake of bicycle of claim 1.

3,, it is characterized in that having at least in the sleeve pipe having a spiral slide on a groove and the center shaft at least according to the said disk brake of bicycle of claim 1.

4,, it is characterized in that the pitch angle alpha will of the spiral slide right-hand member on the center shaft is less than or equal to the helixangle of left end according to claim 1 and 3 said disk brake of bicycle.

5, according to the said disk brake of bicycle of claim 1, it is characterized in that the caliper sidewall of connector bushing has a boss outward at least, support is corresponding with this boss corresponding position to have a groove at least.

6, according to the said disk brake of bicycle of claim 1, it is characterized in that sticking and be welded with an auxiliary bolt or nut at car, the lock body is fixed on car by auxiliary bolt or nut and sticks.

7, according to the said disk brake of bicycle of claim 1, it is characterized in that the lock body is fixed to car by a connection auxiliary and sticks, connect between auxiliary and the car fork and fix with a U-bolt, be welded with an auxiliary bolt on the connection auxiliary, the lock body is connected with the auxiliary bolt by support.