CN201729248U

CN201729248U - Bicycle disc brake structure

Info

Publication number: CN201729248U
Application number: CN2010202590123U
Authority: CN
Inventors: 郑应
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-09
Filing date: 2010-07-09
Publication date: 2011-02-02
Anticipated expiration: 2020-07-09

Abstract

The utility model discloses a bicycle disc brake structure, which comprises adjusting screws, upper and lower brake sheets, a disc, a driving disc, a fixing disc, steel balls and a pull rod, wherein the adjusting screws, the upper and the lower brake sheets and the disc are arranged in a main body, the driving disc, the fixing disc and the steel balls are connected into an integrated body, the pull rod is connected with a spring and the driving disc, the fixing disc and the driving disc are provided with upper and lower ball channel grooves which are mutually matched, the upper and the lower ball channel grooves are provided with placement slots and grooves on a last step, thereby being connected into an integrated body through a circular surface. The bicycle disc brake structure improves the shapes of the upper and the lower ball channel grooves, in order to lead the steel balls to smoothly move to the grooves from the steel ball placement slots, the two uses transition of the circular surface, because of improving the movement track of the steel balls, the movement distance and the height of the steel balls are bigger after the driving disc rotates the same angle, the distance of doing downward linear motion is greatly increased, thereby being capable of increasing the distance between the brake sheets and the disc, and excellently solving the problems that the disc brake is difficult to mount and debug because of small gaps between the brake sheets and the disc.

Description

The Bicycle dished brake structure

Technical field

The utility model relates to a kind of braking mechanism, particularly a kind of Bicycle dished brake structure.

Background technology

The brake of existing bicycle has multiple different structure, the mechanical type of employing disc brake structure is arranged, but it can not unlimited rotation be the limited restriction of brake lever stroke that this brake is subjected to brake lever, when it rotates to certain angle, brake lever will be run into the cross handle of bicycle, thereby the anglec of rotation of actuator is limited in the disc brake, it is also limited that actuator is done the distance that downward straight-line motion moves, so bring the difficulty of installation and debugging between existing disk brake block and the disc owing to the gap is too little, even the phenomenon that disc rubs brake facing appears, bring inconvenience for the bicyclist of bicycle.

What influence that actuator does downward straight-line motion stroke is the path of motion of steel ball, the path of motion of steel ball is the straight line tangent with the steel ball putting hole in the existing disc brake, therefore the distance that moves down of actuator is little, thus cause between brake facing and disc the gap too little, shown in the dotted line of Fig. 9.

The patent No. 20062001836.4 " Bicycle dished brake structure " is though done improvement to the structure of actuator, especially to the path of motion of steel ball, promptly improve the slope variation of skewed slot, combination by the second less slope of bigger first slope of slope and slope replaces the former skewed slot that has only a kind of slope, makes brake faster but it still fails to solve fully the too little problem in gap between brake facing and disc.And, cause the motion of steel ball discontinuous because two sections slopes can not tangently connect.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of Bicycle dished brake structure is provided, when not influencing braking effect, makes the installation of disc brake and debugging become easy, convenient, fast, make brake easily prolong the service life of disc brake again.

The technical scheme that the utility model addresses the above problem employing is: the Bicycle dished brake structure, by the set screw that is installed in the main body, on, on following brake facing reaches, disc between following brake facing and the driving disk that links into an integrated entity, price fixing, steel ball, the pull bar that is connected with spring and driving disk constitutes, described price fixing, have on the driving disk match on, the lower lane groove, on described, the lower lane groove is by the groove of a standing groove and a last step, the integral body that connects into through an arc surface constitutes, the cross-sectional plane of groove is a circular arc, and described shoulder height H is 0.1～0.7 of a standing groove radius R.

Compared with prior art, advantage of the present utility model is: this disc brake structural development on, the shape of lower lane groove, after being come out from standing groove, steel ball moves up a distance at once in groove, for steel ball can be moved to the groove from the steel ball standing groove smoothly, adopt the transition connection rather than the groove of an arc surface to be connected between the two with standing groove is tangent, the improvement of invar ball running orbit simultaneously, make driving disk turn over the distance that steel ball moves after the equal angular, highly bigger, increase for the application force of price fixing, price fixing also strengthens for the antagonistic force of driving disk simultaneously, making driving disk make downward straight-line stroke increases greatly, therefore can increase the distance between brake facing and disc, just can solve the disc brake that brings for a short time between brake facing and disc because gap well installs, the problem of debug difficulties, because driving disk is under the situation of rotation equal angular, the speed that steel ball motion drive driving disk moves downward is faster, move distance is bigger, the phenomenon of having avoided disc to rub brake facing had not only prolonged the service life of disc and brake facing but also had had very strong practical.

Description of drawings

Fig. 1, structural representation of the present utility model (cutaway view).

Fig. 2, driving disk structural representation (block diagram).

Fig. 3, price fixing structural representation (block diagram).

Fig. 4, actuator structural representation (quiescence).

Fig. 5, actuator structural representation (braking state).

The structural representation that Fig. 6, alley groove launch.

Fig. 7, alley groove center deployment figure when static (mated condition).

Fig. 8, alley groove center deployment figure (mated condition during brake).

The contrast scheme drawing of Fig. 9, the utility model and prior art alley groove center deployment.

The specific embodiment

Below in conjunction with accompanying drawing enforcement of the present utility model is further described.

One macropore is arranged in the middle of the main body 2, have on the sidewall one with main body 2 in the middle of the vertical transverse groove of macropores, the magnet that last brake facing 3, following brake facing 4 place the both sides of transverse groove to be driven in dish 6 and the set screw 16 respectively suck, disc 5

places

3,4 of upper and lower brake facings, above transverse groove, install brake facing 3, driving disk 6, steel ball 7, price fixing 8, spring 9 successively, with screw pull bar 1 and driving disk 6 are connected into integral body, brake facing 4. and set screw 14 under installing below the transverse groove.

In the middle of the upper end of driving disk 6 screw is arranged, the lower lane groove 10 of uniform three abnormity that move for steel ball is arranged on the upper surface of following end disc.Upper and lower as required alley groove can be a plurality of.

There is through hole the centre of price fixing 8, have on the lower surface alley groove 10 on the abnormity of the equal number that alley groove 10 is complementary on uniform and the driving disk '.

Upper and lower alley groove 10,10 ' shape, quantity are identical, cooperate with steel ball 7, are made up of three parts, and the standing groove 12 of placing steel ball 7 is complementary with shape, the size of steel ball 7.

The cross-sectional plane of groove 13 is the helical surface of arc, and its arc size is complementary with steel ball.

Groove 13 exceeds a step than standing groove 11, and described shoulder height H is 0.1～0.7 of a standing groove radius R.

13 of standing groove 11 and grooves with arc surface 12 transition connect into smooth upper and lower spheroid groove 10,10 '.

During apply the brakes, driving driving disk 6 by pull bar 1 rotates, steel ball 7 shifts out from standing groove 11, by arc surface 12 in groove 13, under the effect of steel ball 7, force driving disk 6 to make downward straight-line motion, brake facing 3 moves downward in the promotion, and push down disc 5 to brake facing 4, last, following two brake facings 3, locking disc 5 plays the purpose of brake under 4 the effect, after brake finishes, unclamp brake lever, return to original position with the driving disk 6 that fuses with it at the effect lower link 1 of spring 9, steel ball 7 is also got back in the standing groove 11, little and the straight-line stroke of the anglec of rotation of driving disk is big in the whole process, can increase the distance between brake facing and disc, therefore can solve disc brake and last, the disc brake that brings owing to the gap is little between following brake facing is installed, the problem of debug difficulties.

Claims

1. Bicycle dished brake structure, by the set screw (14) that is installed in the main body (2), on, following brake facing (3,4) reach, disc (5) between following brake facing and the driving disk (6) that links into an integrated entity, price fixing (8), steel ball (7), the pull bar (1) that is connected with spring (9) and driving disk (6) constitutes, it is characterized in that described price fixing (8), have on the driving disk (6) match on, the lower lane groove (10 ', 10), on described, the lower lane groove (10 ', 10) by the groove (13) of a standing groove (11) and a last step, the integral body that connects into through an arc surface (12) constitutes, and described shoulder height H is 0.1～0.7 of a standing groove radius R.

2. Bicycle dished brake structure according to claim 1 is stopped, and it is characterized in that described standing groove (11) and groove (13) and shape, the size of steel ball (7) are complementary.

3. Bicycle dished brake structure according to claim 1 is characterized in that described groove (13) is the helical surface of arc for cross-sectional plane.