CN2291366Y

CN2291366Y - Simple adjustable brake structure

Info

Publication number: CN2291366Y
Application number: CN 96244650
Authority: CN
Inventors: 柯纯仁
Original assignee: TAIYA KANGPEI CO Ltd
Current assignee: TAIYA KANGPEI CO Ltd
Priority date: 1996-12-06
Filing date: 1996-12-06
Publication date: 1998-09-16
Anticipated expiration: 2006-12-06

Abstract

The utility model relates to a brake in a braking device of a bicycle, particularly a simple adjustable brake structure, which comprises a pair of symmetric braking arms. A center part is fixedly provided with a braking block and a preset position of the top end of each braking arm is provided with a blocking block. The utility model also comprises a tension spring, wherein, both ends of which are respectively provided with a pivoting part to be pivoted with the top end of each braking arm and the other ends of which can connectively push the blocking blocks of the braking arms. The pushing displacement of a pushing block is adjusted to enable the tension spring and the braking arms to generate the change of relative displacement to slightly adjust the space distance between wheels and the braking block of each braking arm.

Description

Simple and easy adjustment type brake structure

The utility model relates to a kind of brake in the cycle brake, refers in particular to a kind of simple and easy adjustment type brake structure.

Brake structure commonly used as shown in Figure 1, it comprises two brake arms, its bottom is to be articulated on the front fork of bicycle or the back fork structure and by a coil spring 2 to release elastic force one time to this brake arm application of force, so that the brake shoes 3 in the middle of this brake arm is urgent from wheel 4 when the normality, this each brake arm 1 top then connects a brake cable 5 and collude to hold in and link with brake crank after compiling on the sheet 6 again respectively; When brake crank is done the time spent, shown in the dotted line of Fig. 1, brake cable 5 is towards brake lever orientation displacement, and makes this collude holding sheet 6, the displacement of brake cable 5 interlocks, and then the brake shoes 3 of this each brake arm is affected promptly towards the wheel closing, and reaches the brake purpose; When loosening brake crank, because of the effect of this each coil spring 2, make this brake arm have back the elastic force of releasing, make each member tool automatic homing.

Yet, above-mentioned brake structure commonly used, but long-term existence has following shortcoming.

One, in order to make brake certain, laborsaving, the above-mentioned support body center that sheet 6 must be positioned at bicycle of holding of colluding, keep equidistant from distance with the brake shoes 3 that makes the left and right sides with wheel, wait to make the two ends, the left and right sides of 3 pairs of wheels of brake shoes of this left and right sides to have identical braking force; Yet aim at installing of operation at center-point, must use speciality tool to fix to collude and hold sheet 6 and this brake arm 1, and with the adjustment back and forth constantly of this speciality tool, quite consuming time; And, for the user, this colludes holds sheet 6 behind braking action repeatedly, very easily produces displacement and can't be immobilizated in bicycle support body center, and the brake arm 1 about this moment is the spacing that does not wait with wheel, when first moment of brake, row braking action on one side only, braking effect not really and effort, if hold different instrument and do not have career training again suffering from not having this when the user adjusts voluntarily, and can't do the balance adjustment to this brake arm 1, often influence braking effect and cause great puzzlement.

Two, installing on the coil spring 2, these coil spring 2 one ends need be fixed on this brake arm, and the other end then is fixed on the bicycle support body, therefore must pin coil spring on the other hand when mounted, then implement to install this brake arm 1 in addition on the other hand, quite difficult in installation combination operation.

The purpose of this utility model is to propose a kind of simple and easy adjustment type brake structure of mainly being made up of brake arm, tension spring, brake shoes, block and thrust unit, it has simple in structure, easy to operate and characteristics such as braking effect is good, thereby has solved the existing in prior technology problem.

The technical scheme that the utility model adopted is, it includes the brake arm of a symmetry, this each brake arm bottom is to be articulated on the bicycle support body with symmetrical manner, and its central part is installed with a brake shoes, and this each one desired location, brake arm top is provided with a block; One tension spring, its two ends have an articulated section respectively and the axle pivot in the top of this each brake arm, the near-end of this each articulated section has then installed a thrust unit respectively, but has the forward block that a multiple stage promotes; The body body of this each forward block is to be arranged in this tension spring, but the other end then apical grafting on the block of this brake arm; By the promotion displacement of adjusting this forward block, make this tension spring and this brake arm produce the relative displacement variation, with the brake shoes of finely tuning this each brake arm and the spacing of wheel.

The utlity model has following advantage:

(1) the simple and easy adjustment type brake of the utility model structure only utilizes simple tool that this each thrust unit is advanced operation by the operator in brake arm balance fine setting operation, and operation is simple and easy, makes that the braking effect after the fine setting is more certain, laborsaving.

(2) combined member of the simple and easy adjustment type brake of the utility model structure is simple and easy, and combination is installed all is consideration with the convenience, therefore the double effects with facility and economy.

Fig. 1 is the scheme drawing of conventional brake structure.

Fig. 2 is the exploded perspective view of the utility model one preferred embodiment.

Fig. 3 is the fragmentary sectional elevation view after the combination of the utility model one preferred embodiment.

Fig. 4 is the side partial sectional view after the utility model one preferred embodiment combination.

Fig. 5 is the top view of the utility model tension spring.

Fig. 6 be the utility model behind the long-term use brake, the scheme drawing of its brake arm and wheel displacement deformation.

Fig. 7 is that Fig. 5 adjusts operation, the relative position scheme drawing of its brake arm and wheel through the brake arm balance.

Further specify preferred embodiment of the present utility model in conjunction with above-mentioned each accompanying drawing now, at first see also Fig. 2 to shown in Figure 5, the simple and easy adjustment type brake of the utility model structure consists predominantly of first and second brake arm 10 of a symmetry, 20, this is this car arm 10 respectively, 20 bottoms are pivot pins 11,21 and be articulated on the crotch of bicycle, and this each brake arm 10,20 central part then is installed with a brake shoes 12,22, reach braking effect in order to clamp car body wheel A, this each brake arm 10 in addition, ora terminalis is provided with a through hole 13 on 20,23, a block 14 then is equipped with at the back side of its lower end, 24; One tension spring 30, it is that elastomeric material is made, as plastic-steel, spring steel etc. are with high-tension and endurance character etc., its two ends have an articulated section 31, generally be a pivoted hole, respectively to should each brake arm 10,20 through hole 13,23, and by wearing, a pin 32 is articulated in this each brake arm 10, on 20, these each articulated section 31 lower edges then are provided with a thrust unit 40 again, this thrust unit 40 is to have the one body to be provided with the forward block 41 of external screw thread and to be provided with one in these tension spring 30 ends and be the cooresponding trepanning 42 of negative thread, make that the body body of this forward block 41 is to screw togather with the appropriate location to be arranged in this tension spring 30, the one end has a criss cross pulling part 411 can be pulled for staff, and the other end then pushes up sincere this brake arm 10,20 block 14, on 24; These tension spring 30 central parts then are provided with a reinforcement part 33 again, it is two loose rib-like, and its basal area can be not same attitude, as convex shape, I font etc., the concentrated place of these tension spring 30 STRESS VARIATION under the operation of constantly braking and increase elastic force with reinforcement and opposing; In addition, the design of this pin 32 is to offer the vertical groove 321 of multiple row in end, and outline then forms an oblique cone portion 322, makes assembling and disassembling this tension spring 30 quick and convenient in brake arm 10,20 operations; One links cable 50, its two ends are to link this first and second brake arm 10,20 respectively, its central authorities link a brake cable 60 again to brake crank, when brake crank moves, then this brake cable 60 of interlock and this binding cable 50 and drive this first and second brake arm 10,20 and inwardly move, make this each brake shoes 12,22 and clamping wheel A reaches braking effect; If brake crank loosens, then release elastic force and make each member automatic homing by returning of this tension spring 30.

Aspect brake arm balance fine setting operation:

(1) as shown in Figure 6, behind the long-term use brake, this each brake arm 10,20 and this wheel form displacement deformation, that is the spacing that do not wait of this each brake shoes 12,22 and wheel A formation;

(2) when carrying out balance adjustment operation, as shown in Figure 7, the operator only need utilize plus driver that this each forward block 41 is promoted operation, that is transfer in the forward block 41 on the left side respectively and access the right forward block 41, make these tension spring 30 left and right edge tails be middle mind-set clickwise with this articulated section 31, and, make the brake shoes 12,22 of this each brake arm 10,20 produce displacements and form equidistantly with wheel A respectively by the sincere effect in mutual top of this forward block 41 with this block 14,24.

What must be illustrated is, the thrust unit of the simple and easy adjustment type brake of the utility model structure, wherein the body body of this forward block 41 also can be the multiple stage blocking block, and this trepanning 42 can be the multiple stage caulking groove, therefore above-mentioned explanation only is a preferred embodiment of the present utility model, is not to be used for limiting the scope that the utility model is implemented.Be that all equalizations of being done according to the utility model claim change and modification, be the utility model claim and contain.

Claims

1. simple and easy adjustment type brake structure, it is characterized in that it includes the brake arm of a symmetry, this each brake shoes bottom is articulated on the bicycle support body with symmetrical manner, and its central part is installed with a brake shoes, and this each one desired location, brake arm top is provided with a block; One tension spring, its two ends have an articulated section respectively and the axle pivot in the top of this each brake arm, the near-end of this each articulated section has then installed a thrust unit respectively, but has the forward block that a multiple stage promotes; The body body of this each forward block is to be arranged in this tension spring, but the other end then apical grafting on the block of this brake arm.

2. according to the said simple and easy adjustment type brake structure of claim 1, it is characterized in that said tension spring, its central part is provided with a reinforcement part.

3. according to the said simple and easy adjustment type brake structure of claim 2, it is characterized in that said reinforcement part, it is one to be two loose rib-like.

4. according to the said simple and easy adjustment type brake structure of claim 1, it is characterized in that said thrust unit, its propelling block body is provided with external screw thread, and partly is provided with a trepanning to tension spring that should forward block is predetermined, and this trepanning is a negative thread shape.

5. according to the said simple and easy adjustment type brake structure of claim 1, it is characterized in that said thrust unit, its propelling block body is provided with the blocking block of multiple stage, and partly is provided with a trepanning to tension spring that should forward block is predetermined, and this trepanning is the caulking groove of a porous type.

6. according to the said simple and easy adjustment type brake structure of claim 1, it is characterized in that said brake arm, it also respectively is connected with in order to link the binding cable on this brake arm top, and its central part links a brake cable again to brake crank.