CN2855889Y - Brake structure of bicycle - Google Patents

Abstract

The utility model relates to a brake structure of a bicycle, mainly characterized in that an arch main body is arranged in front of a front fork pipe. The up end of the arch shaped main body pivoted with an arch lever unit which assumes interlock marriage relation with the steel cable of transverse penetrating front fork pipe. The pipe body of second hub ear hitched to the symmetrical brake structure is inserted into the sliding hole on the side edge of the main body, so that the symmetrical brake structure can be installed on the inner side of arch main body. and slant pin joint the symmetrical brake structure and the arch main body are slantingly pivoted with the symmetrical first and second connecting bar. When the level assembly is laterally pulled by the steel cable, the bottom end of the two side rod of the level assembly will press the pipe body to move to the second position of sliding hole and synchronously drive the left-right brake structure to move backward. Owning to the arrangement of that the slantingly arranged first connecting bar and second connecting bar taper inward, the left-right brake structure grip and press the wheel frame inward in opposite direction when moving synchronously backward.

Description

The bicycle brake structure

Technical field

The utility model relates to a kind of bicycle brake structure, particularly relates to a kind of bicycle brake of sliding bar linkage structure form, is to belong to the bike tech development field.

Background technology

Press, the driving safety key of known bicycle is that the braking force design of brake is good and bad, the bicycle that current unit price is expensive, the disc brake of the hydraulic pressure form of many collocation braking force the bests uses, the then relatively poor U type brake of braking force, the drags when running at high speed of adopting of the bicycle of general price with auxiliary bike more.

Yet, known U-shaped brake two brake arms are to be installed in the front fork tube front end, Brake cable is then from top to bottom worn along front fork tube and is locked in the messenger wire sheet that is welded in the front fork tube front end, messenger wire sheet qi is again told two messenger wires, two messenger wires of difference again with the forward and backward overlapping shape brake arm pivot of the fork body front end that is installed in front fork tube in, drive and contract in two brake arms by hold with a firm grip brake crank and interlock Brake cable, two messenger wires again, and order is located at the brake shoes folder of two brake wall inboards and compels wheel rims and reach the tire stopping effect.

Above-mentioned known U type brake, collocation generally drives slow leisure bicycle, its braking effect is more than sufficient voluntarily, if when carrying the athletic type bicycle of running at high speed, because two brake arms of U-shaped brake are subjected to the messenger wire of two differences, the Brake cable of stretched vertically drives event, and before can forming, the left side that the back overlaps, right brake arm generates the disappearance of asynchronous start, and then cause a left side, the brake shoes original place of right brake arm inboard presss from both sides urgent wheel rim " asynchronous start " inwardly, this small asynchronous folder is compeled disappearance and be there is no any impression for the rider, but with regard to actual face opinion, the left side of the process of running at high speed brake, right brake arm is if start synchronously, then can directly be reflected at the braking distance length that wheel rim stops operating, in other words, can't reach a left side, right brake arm contracts synchronously to press from both sides and compels the wheel rim design, then can influence high speed player's personal safety, this disappearance also is the target of the main improvement of this case.

This shows that above-mentioned existing bicycle brake structure obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem that the bicycle brake structure exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.

Because the defective that above-mentioned existing bicycle brake structure exists, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and expertise, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of bicycle brake structure of new structure, can improve general existing bicycle brake structure, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.

Summary of the invention

The purpose of this utility model is, overcomes the defective that existing bicycle brake structure exists, and a kind of sliding brake is provided, and the folder that reaches the wheel frame when using the post-tensioning displacement is compeled effect, thereby is suitable for practicality more.

Another purpose of the present utility model is, provides a kind of left and right brake member of sliding brake can press from both sides the high braking force bicycle brake of compeling the wheel frame synchronously, thereby is suitable for practicality more.

A purpose more of the present utility model is, a kind of sliding brake that is arranged on the front fork tube front and back ends is provided, thereby is suitable for practicality more.

The purpose of this utility model and to solve its technical matters be to adopt following technical scheme to realize.According to a kind of bicycle brake structure that the utility model proposes, this brake comprises: a body, be to be installed in the front fork tube front end and to be corresponding relation up and down with tire that axle is located at front fork tube, this body and with the be pivoted lever assembly of a corresponding shape of rotary way, lever assembly also combines with the cable wire free end of brake usefulness and to be a continuous action relation; The brake member of one left and right symmetry, be to plug by the body in the outside and the slide opening activity of body dual-side, but make left and right symmetry brake member be contained in the body inboard in the transverse slip mode, and when left and right symmetry brake member is pullled lever assembly and is pushed against left and right brake member towards the displacement of cable wire start direction with cable wire, and can impose left and right brake shoes is compeled tire synchronously to the folder that inwardly contracts wheel frame by the linkage rod group of left and right symmetry brake member of oblique connection and body.

The purpose of this utility model and solve its technical matters and also be further achieved by the following technical measures.

Aforesaid bicycle brake structure, wherein said body is an arch configuration body, this arch body dual-side also is provided with a microscler through hole, arch lever assembly two side levers for corresponding shape penetrate, lever assembly two side levers then articulate by the axis hole of T shape pivot that laterally runs through and arch body bottom flange, the arch body also wears a central siphon and front fork tube by the top and is one and links the location, is located in cable wire free end in the central siphon and then combines with lever assembly and be a continuous action relation.

Aforesaid bicycle brake structure, the brake member of wherein said left and right symmetry, the inboard is combined with two ends, the brake shoes outside the extended outwardly first pivot ear and the second pivot ear, then laterally be arranged with a body in the second pivot ear, left and right brake member then is plugged in the Pear-Shaped slide opening of body dual-side by the body free end, but and makes left and right brake member be contained in arch body inboard in the transverse slip mode.

Aforesaid bicycle brake structure, wherein said linkage rod group comprises the first connecting rod and the second connecting rod of left and right symmetry, the first connecting rod of symmetry shape is the oblique left side that is hubbed on, right brake member first pivot ear and arch body front end lug, the second connecting rod of symmetry shape then oblique be pivoted left and right brake member second pivot ear and the perforation of arch body rear end are the line symmetric relation in order to do sharp first, second connecting rod and tire.

Aforesaid bicycle brake structure, wherein said body apical margin rear end forms a square opening, makes it be beneficial to central siphon grafting lock knot.

Aforesaid bicycle brake structure, the horizontal segment that extend towards the rear the dual-side bottom of wherein said lever assembly is formed with an open-work that supplies pivot to wear, the lever assembly apical margin then extends the ear of spacing shape up, and two ear tops are equipped with one for cable wire binding coupling member.

Aforesaid bicycle brake structure, wherein said body exterior also is equipped with an arch lid, and this arch lid dual-side end face is provided with the outer slide opening of corresponding slide opening form.

Aforesaid bicycle brake structure is provided with buffer body between bottom, wherein said body dual-side rear end and front fork tube.

Aforesaid bicycle brake structure, the wherein said body outside is arranged with an outer tube body.

Aforesaid bicycle brake structure, the horizontal segment of wherein said lever assembly two side levers, the proper body normality with left and right brake member of vertical section joining place are not one against shape under the start.

Aforesaid bicycle brake structure, the wherein said pivot that runs through lever assembly and arch body assembly is radially to run through an elasticity connecting element and the arch body fastens spacing mutually by extending part, the pivot outside.

Aforesaid bicycle brake structure, the first connecting rod of wherein said title shape and the first pivot ear are by vertically plugging a connecting element to constitute first pivot part, the oblique outwardly other end that is arranged on arch body front end lug of first connecting rod then vertically runs through the torque spring that the hollow sleeve that is set between the first pivot ear and an end be set in hollow sleeve by a coupling unit and forms first fixed part; As for, the second connecting rod of symmetry shape and the second pivot ear, be arranged on the body in the second pivot ear, then vertically run through and be combined into second pivot part by a connecting element, the oblique outwardly other end that is arranged on the perforation of arch body rear end of second connecting rod then vertically runs through being combined into second fixed part by a coupling unit.

Aforesaid bicycle brake structure, first, second connecting rod of wherein said symmetry shape is meant the oval plate of corresponding shape up and down.

Aforesaid bicycle brake structure, wherein said coupling member comprise that a tubulose pipe link, that laterally provides at two protuberances is arranged on pipe link bottom flat-bed block, and the conjunction of a lock caked mass and pipe link.

Aforesaid bicycle brake structure, wherein said pipe link are to fasten spacing by sheathed C shape button in the side trench with ear.

Via as can be known above-mentioned, the utility model relates to a kind of bicycle brake structure, mainly be that an arch body is fixedly arranged on front fork tube the place ahead, arch body upper end wears and articulates an arch lever assembly, this lever assembly also is an interlock marriage relation with the cable wire that laterally runs through front fork tube, utilize again and be set in a left side, the body of the brake member second pivot ear of right symmetry laterally is plugged in body side slide opening, an order left side, right symmetry brake member is placed in arch body inboard, and by a left side, first of right symmetry, the oblique pivot joint of a second connecting rod left side, right brake member and arch body, when lever assembly is laterally spurred by cable wire, lever assembly two side lever bottoms then can compress body and be moved to the slide opening second place, and drive left synchronously, the displacement backward of right brake member, be subjected to first of oblique setting simultaneously, second connecting rod is inwardly to the design of inwardly contracting, an order left side, subtend was pressed from both sides inwardly and is compeled the wheel frame when right brake member got synchronously displacement backward, use and improve known U-shaped brake and compel the wheel frame and generate the not enough disappearance of bicycle brake power because of pressing from both sides synchronously, reality is one to have the utility model of industry applications.

By technique scheme, the utility model bicycle brake structure has following advantage at least:

The utility model bicycle brake structure does not have known cable wire wears formation along bicycle handle, front fork tube vertical direction complicated circuit question, and by the succinct line design that laterally runs through front fork tube, and the selection effect that brake of the present utility model is arranged on front fork tube front end or rear end is provided and can improves known U-shaped brake and compel the wheel frame and generate the hypodynamic disappearance of bicycle brake because of pressing from both sides synchronously.

In sum, the bicycle brake structure of the utility model special construction, line design is succinct, can improve known U-shaped brake and generate the hypodynamic disappearance of bicycle brake because of pressing from both sides urgent wheel frame synchronously.It has above-mentioned many advantages and practical value, and in like product, do not see have similar structure design to publish or use and really genus innovation, no matter it all has bigger improvement on product structure or function, have large improvement technically, and produced handy and practical effect, and more existing bicycle brake structure has the multinomial effect of enhancement, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.

Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification sheets, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Fig. 1 is the utility model bicycle brake STRUCTURE DECOMPOSITION scheme drawing.

Fig. 2 is the utility model bicycle brake structure transparent view.

Fig. 3 is the side schematic view that the utility model bicycle brake structure is incorporated into front fork tube.

Fig. 4 is the side three-dimensional appearance scheme drawing of the utility model bicycle brake structure.

Fig. 5 is the not upward view during start of the utility model bicycle brake structure normality.

Fig. 6 is the front schematic view of Fig. 5.

Fig. 7 is the side schematic view of Fig. 5.

Fig. 8 is the side status scheme drawing that the utility model bicycle brake structure folder is compeled the wheel frame.

Fig. 9 is the upward view that the utility model bicycle brake structure folder is compeled the wheel frame.

1: brake 10: the arch body

11: through hole 12: lug

13: perforation 14: slide opening

15: flange 151: axis hole

16: direction hole 17: central siphon

18: buffer body 20: lever assembly

21: side lever 22: pivot

23: ear 24: pipe link

241:C shape button 242: platform

243: block 244: conjunction

40: 401: the first pivot ears of brake member

402: the second pivot ears 41: brake shoes

42: body 42a: outer tube body

51: first connecting rod 52: second connecting rod

53: connecting element 54: torque spring

55: hollow sleeve 56: coupling unit

57: nut 60: lid

61: outer slide opening A: front fork tube

B: cable wire C: first pivot part

C1: the second pivot part D: first fixed part

D1: the second fixed part E: elasticity connecting element

The specific embodiment

For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its specific embodiment of bicycle brake structure, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.

Please refer to Fig. 1 to shown in Figure 4, this brake 1 comprises:

One body 10, it is the arch configuration body of an acquiescence fabric width, these arch body 10 terminal suitably fabric widths, the dual-side central longitudinal of thickness is to being provided with a microscler through hole 11, on through hole 11 front ends, the lower surface then is formed with the lug 12 of a spacing hollow out, the rear end then vertically is provided with the perforation 13 of a penetration state, arch body 10 dual-sides laterally then are provided with a Pear-Shaped slide opening 14 by big roundlet footpath, the flange 15 of a semicircle is then extended in corresponding slide opening 14 positions, dual-side bottom surface, flange 15 laterally runs through and is formed with an axis hole 151, again, arch body 10 apical margin rear ends are formed with a direction hole 16, in order to do the lock knot of pegging graft for the central siphon 17 that laterally runs through front fork tube A, make arch body 10 must be positioned bicycle front fork pipe A the place ahead, and arch body 10 dual-sides enclose structure a just and the tire (not shown) that is hubbed between front fork tube A present, following corresponding relation; In addition, for avoiding generating structure clashing and breaking between arch body 10 and front fork tube A, arch body 10 ends are between the dual-side rear end and front fork tube A of bulk, then can set up the buffer body 18 of a bulk, and buffer body must be plastic cement piece, rubber block or the Sponge of tool plasticity.

The lever assembly 20 of one arch, this lever assembly 20 is vertically to penetrate in arch body 10 through holes 11 by L shaped two side levers 21, make lever assembly 20 tops be positioned at the tip exterior of arch body 10,21 L-shaped of two side levers are positioned at arch body 10 dual-side inboards, 20 pivots 22 by a T form sample of lever assembly laterally run through the axis hole 151 of 21 bottom horizontal segment perforation of L shaped two side levers and arch body 10 flanges 15 from inside to outside, radially utilize an elasticity connecting element E to pass the open-work that pivot 22 exposes again, make lever assembly 20 and arch body 10 be a movable relation that articulates;

Again, lever assembly 20 apical margins extend a left side up, the ear 23 of space on right, 23 of two ears are equipped with a coupling member for cable wire B packing combination, this transom main composition comprises a pipe link, one block and a conjunction, wherein, the pipe link 24 of tubulose fastens the location by the sheathed C shape button 241 of a side trench with ear 23, the platform 242 that pipe link 24 bottom surfaces are arranged with, the block 243 of 242 confession one corresponding shapes of platform is ccontaining, and run through lock knot by a conjunction 244,243 of platform 242 and blocks and the cable wire B free ends that supply to be located in the central siphon 17 penetrate packing, make the lever assembly 20 and the cable wire of brake usefulness be a continuous action relation;

One left side, the brake member 40 of right symmetry, the inboard is combined with the brake shoes 41 of a rubber material, before the outside, back two ends are horizontal-extending one first pivot ear 401 and one second pivot ear 402 outwardly then, 402 in the second pivot ear then horizontal stroke laterally is arranged with a body 42, body 42 outside free ends then can be adopted with in the slide opening 14 that is located in arch body 10 dual-sides, also can adopt the free end sheathed outer tube body 42a that goes ahead of the rest and be plugged in two kinds of embodiments in the slide opening again, an order left side, but right brake member 40 is able to the transverse slip mode and is contained in arch body 10 inboards, and body 42 front ends are also vertical with lever assembly 20 bottoms, the horizontal segment joining place is one against shape, and this enforcement is adopted with the extra socket one outer tube body 42a in body 42 outsides, is the usefulness that provides against body 42 lever assemblies 20 1 anti-skidding location.

One linkage rod group (linkage rod group can cooperate with reference to shown in Figure 9 in addition), be by a left side, the first connecting rod 51 and the second connecting rod 52 of right symmetry constitute, first of present embodiment, second connecting rod 51,52, be above, the oval plate of following symmetry is the structure explanation, on being somebody's turn to do, the following oval plate first pivot ear, 401 upper and lower sides that are placed in, utilize the connecting element 53 of a latch form vertically to run through oval plate perforation again, the perforation of the first pivot ear also is incorporated into down in the perforation of oval plate, to form the first pivot part C, the then oblique outwardly correspondence of the oval up and down plate other end is arranged on the arch body 10 front end lugs, the torque spring 54 that again an end is set in the T shape hollow sleeve 55 is seated in, (also can be referred to as to be positioned on the arch body front end between down oval plate perforation, between the lug that extend the lower surface), the coupling unit 56 of using a bolt form vertically runs through oval plate perforation, torque spring 54, hollow sleeve 55, down oval plate perforation, arch body lower end lug 12, utilize a nut 57 locking location again, make first connecting rod 51 rear ends and arch body 10 form the first fixed part D;

As for, the second connecting rod of two symmetries its up and down oval plate be to be seated in the second pivot ear, 402 upper and lower ends, utilize the connecting element 53 of a latch form vertically to run through the body 42 in oval plate perforation, the second pivot ear 402, the second pivot ear and plug set in down oval plate perforation again, make second connecting rod 52 front ends and the second pivot ear 402 form the second pivot part C1; Oval up and down plate rear end is then oblique outwardly to be arranged on 13 places of boring a hole, arch body 10 rear ends, utilize the coupling unit 56 of a bolt form vertically to run through again and, make second connecting rod 52 rear ends and the arch body 10 rear ends perforation 13 formation second fixed part D1 with a nut 57 lock knots;

In addition; bicycle brake of the present utility model; also can be in the lid 60 of arch body 10 outside sheathed arches; the outer slide opening 61 of big roundlet cucurbit form is directly also laterally run through, then in lid 60 corresponding arch body slide openings 14 places; laterally plug by the body 42 that is set in the second pivot ear 402; make this arch lid 60 firmly be incorporated into arch body 10 outsides,, and have the double effects that beautifies of covering each assembly of brake concurrently with the protection effect of each assembly anticollision of reaching brake.

Bicycle brake 1 of the present utility model reaches folder and compels tire to stop the bicycle principle, cooperates Fig. 5, shown in Figure 6 now:

Please refer to Fig. 5 to shown in Figure 7, be respectively schematic bottom view, side schematic appearance and front appearance scheme drawing under brake 1 normality, under the normality, the left and right brake shoes 41 of the utility model brake 1 keeps an acquiescence distance with the wheel frame, and body 42 free ends that are set in the second pivot ear just are positioned at slide opening 14 primary importances;

Refer again to Fig. 8, shown in Figure 9, when the user hold with a firm grip bicycle handle bar on hand the Brake lever (not shown) and during the displacement of interlock cable wire B horizontal cross, 20 of lever assemblies are pivot center by the pivot 22 that runs through with arch body 10, make lever assembly 20 toward back lower place displacement, 20 liang of side lever 21 bottoms of lever assembly then can oppress the rear end against body 42, be moved to the second place and the displacement backward of the left and right brake member 40 of interlock by slide opening 14 primary importances backward; Because brake member 40 and 10 oblique bindings of arch body have a left side, first of right symmetry, second connecting rod 51,52, this left side, first of right symmetry, second connecting rod 51,52 and be " line symmetry " mode with the tire line of centers and design, add, first, second connecting rod 51,52 with first of arch body 10 rear ends perforation, the second fixed part D, D1 is fixing axle center, with first, first of two pivot ears, the second pivot part C, C1 is a center of rotation, so, a left side, can be with interlock first during the displacement backward of right brake member 40, second connecting rod 51,52 with first, the second pivot part C, C1 is a center of rotation and to inwardly contracting, to press from both sides the wheel frame of compeling to be arranged on the front fork tube, stop forcing bicycle; When cable wire B lateral pull discharges, then can be arranged on arch body 10 acquiescence places by 54 1 footings of the torque spring in first pivot part, another footing is arranged on hollow sleeve 55 outsides, and left and right brake member 40 quick elastic reset effects are provided.

The left and right brake member 40 of the utility model brake 1 is compressed synchronously by 20 liang of side levers of lever assembly, and drive the displacement backward synchronously of left and right brake member 40, again by 10 oblique linkage rod group novel designs that are connected of left and right brake member 40 and arch body, must make the brake shoes 41 of left and right brake member 40 inboards " synchronously " press from both sides urgent wheel frame inwardly, promoting the braking force of brake 1, and then the brake of reducing bicycle is apart from long long effect.

Moreover, bicycle brake 1 of the present utility model, because driving the cable wire B of the urgent wheel of brake 1 folder frame adopts laterally to run through front fork tube A form, so no known cable wire wears the complicated circuit question of formation along bicycle handle, front fork tube vertical direction, be with, brake 1 of the present utility model is by the succinct line design that laterally runs through front fork tube, and provided brake 1 of the present utility model to be arranged on the selection effect of front fork tube A front end or rear end.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.

Claims (15)

1, a kind of bicycle brake structure is characterized in that described brake comprises:

One body is to be installed in the front fork tube front end and to be corresponding relation up and down with tire that axle is located at front fork tube, this body and with the be pivoted lever assembly of a corresponding shape of rotary way, and lever assembly also combines with the cable wire free end of brake usefulness and to be a serial verb construction;

The brake member of one left and right symmetry, be to plug by the body in the outside and the slide opening activity of body dual-side, but make left and right symmetry brake member be contained in the body inboard in the transverse slip mode, and when left and right symmetry brake member is pullled lever assembly and is pushed against left and right brake member towards the displacement of cable wire start direction with cable wire, and can impose left and right brake shoes is compeled tire synchronously to the folder that inwardly contracts wheel frame by the linkage rod group of left and right symmetry brake member of oblique connection and body.

2, bicycle brake structure according to claim 1, it is characterized in that wherein said body is an arch configuration body, this arch body dual-side also is provided with a microscler through hole, arch lever assembly two side levers for corresponding shape penetrate, lever assembly two side levers then articulate by the axis hole of T shape pivot that laterally runs through and arch body bottom flange, the arch body also wears a central siphon and front fork tube by the top and is one and links the location, is located in cable wire free end in the central siphon and then combines with lever assembly and be a serial verb construction.

3, bicycle brake structure according to claim 1, the brake member that it is characterized in that wherein said left and right symmetry, the inboard is combined with two ends, the brake shoes outside the extended outwardly first pivot ear and the second pivot ear, then laterally be arranged with a body in the second pivot ear, left and right brake member then is plugged in the Pear-Shaped slide opening of body dual-side by the body free end, but and makes left and right brake member be contained in arch body inboard in the transverse slip mode.

4, bicycle brake structure according to claim 1, it is characterized in that wherein said linkage rod group comprises the first connecting rod and the second connecting rod of left and right symmetry, the first connecting rod of symmetry shape is oblique left and right brake member first pivot ear and the arch body front end lug of being hubbed on, the second connecting rod of symmetry shape then oblique be pivoted left and right brake member second pivot ear and the perforation of arch body rear end make first, second connecting rod and tire be the line symmetric relation.

5, bicycle brake structure according to claim 1 and 2 is characterized in that wherein said body apical margin rear end forms a square opening.

6, bicycle brake structure according to claim 1 and 2, it is characterized in that the horizontal segment that extends towards the rear the dual-side bottom of wherein said lever assembly is formed with an open-work that wears for pivot, the lever assembly apical margin then extends the ear of spacing shape up, and two ear tops are equipped with one for cable wire binding coupling member.

7, bicycle brake structure according to claim 1 and 2 is characterized in that wherein said body exterior and is equipped with an arch lid that this arch lid dual-side end face is provided with the outer slide opening of corresponding slide opening form.

8, bicycle brake structure according to claim 1 and 2 is characterized in that being provided with buffer body between bottom, wherein said body dual-side rear end and front fork tube.

9,, it is characterized in that the wherein said body outside is arranged with an outer tube body according to claim 1 or 3 described bicycle brake structures.

10, bicycle brake structure according to claim 2 is characterized in that the proper body normality with left and right brake member of horizontal segment, vertical section joining place of wherein said lever assembly two side levers is not one against structure under the start.

11, bicycle brake structure according to claim 2, it is characterized in that the wherein said pivot that runs through lever assembly and arch body assembly, is radially to run through an elasticity connecting element and the arch body fastens spacing mutually by extending part, the pivot outside.

12, bicycle brake structure according to claim 4, the first connecting rod and the first pivot ear that it is characterized in that wherein said symmetry shape are by vertically plugging a connecting element to constitute first pivot part, the oblique outwardly other end that is arranged on arch body front end lug of first connecting rod then vertically runs through the torque spring that the hollow sleeve that is set between the first pivot ear and an end be set in hollow sleeve by a coupling unit and forms first fixed part; As for, the second connecting rod of symmetry shape and the second pivot ear, be arranged on the body in the second pivot ear, then vertically run through and be combined into second pivot part by a connecting element, the oblique outwardly other end that is arranged on the perforation of arch body rear end of second connecting rod then vertically runs through being combined into second fixed part by a coupling unit.

13, bicycle brake structure according to claim 4 is characterized in that first, second connecting rod of wherein said symmetry shape, is meant the oval plate of corresponding shape up and down.

14, bicycle brake structure according to claim 6, it is characterized in that wherein said coupling member comprises that a tubulose pipe link, that laterally provides at two protuberances is arranged on pipe link bottom flat-bed block, and the conjunction of a lock caked mass and pipe link.

15, bicycle brake structure according to claim 14 is characterized in that wherein said pipe link is to fasten spacing by sheathed C shape button in the side trench with ear.

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