CN2232002Y

CN2232002Y - Damping front wheel fork device for bicycle

Info

Publication number: CN2232002Y
Application number: CN 95222607
Authority: CN
Inventors: 张升常; 黄天佑
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-04
Filing date: 1995-09-04
Publication date: 1996-07-31
Anticipated expiration: 2005-09-04

Abstract

The utility model relates to a synergic shaft type damping front fork device for bicycles, comprising a front fork frame arranged in a bicycle head tube by a fixing cylinder and a wheel seat assembled under the front fork frame, wherein, the two sides of the front fork frame are provided with side rods, and the middle segment and the bottom of each side rodis provided with an upper sliding seat and a lower sliding seat respectively in a projecting mode to be sheathed by a sliding shaft on the wheel seat. Besides, an elastic element is arranged between the lower sliding seat and the wheel seat to absorb vibration force transferred from a front wheel to achieve better damping effect.

Description

Bicycle association shaft type shock-absorbing front fork device

The utility model relates to a kind of bicycle and assists shaft type shock-absorbing front fork device.

The bicycle front fork device is in order to connect head tube and front-wheel wheel shaft, and the front fork unit top is placed through in the head tube, and connect and establish handlebar, make and rotate handlebar, can control the direction of front-wheel by front fork unit, opposite, when front-wheel is subjected to the influence of rugged road surface and when producing vibratory force, also can pass to handle by front fork unit, make hand be subjected to brisance and numb, so comparatively Kao Jiu bicycle front fork device promptly can be established with shock-damping structure, and the existing damping design lists that adopt are organized the beam barrel stretch modes more, promptly in direct sheathed elastic axis in two side neck bottoms of front fork and damping spring, but its damping spring also can't be adjusted elasticity, the more important thing is, when doing the difference activity when going out (such as expedition), need the damping spring of different elastic force, but can't change.

For improving above-mentioned existing disappearance, the purpose of this utility model is: provide a kind of bicycle to assist shaft type shock-absorbing front fork device, mat is located at elastic element that the damping that is provided with between the upper and lower slide of stage casing, front fork frame both sides and bottom and lower slider and the wheel seat uses and the slide-bar that extends up through lower slider, upper saddle from the wheel seat top, make and drive when rugged road surface, the wheel seat slippage that promptly can make progress, and reach damping effect, and can adjust the elastic force tightness of elastic element by adjustable bolt, when elastic element during, also can change because of the long-term use elastic fatigue.

For achieving the above object, the utility model provides a kind of bicycle to assist shaft type shock-absorbing front fork device, it is characterized in that: comprise the front fork frame, be located at the wheel seat of front fork frame down either side, be located at the elastic element between front fork frame two ends and the wheel seat, cushion rubber and brake permanent seat, wherein, each extends a side lever downwards front fork frame both sides, in the side lever stage casing and a bottom prominent upper saddle and the lower slider established towards wheel the place ahead respectively, on being somebody's turn to do, the also coaxial last slide opening that runs through up and down that is provided with reaches slide opening down on the lower slider, last slide opening top and the corresponding cushion rubber that is affixed on the upper saddle end face that is provided with, establish an opening down in following slide opening one side of lower slider in addition, the upper notch of inserting for elastic element

Be located at the wheel seat of front fork frame below, its bottom extension downwards is provided with the wheel shaft fixing port, and in the wheel seat end face, with respect to the following slide opening and the upper notch position of lower slider, be equipped with pass down slide opening, go up slide opening, following shrinkage pool that the slide-bar of cushion rubber and is inserted for elasticity element bottom

Be positioned at the brake permanent seat in front fork frame the place ahead, its two ends that extend are downwards respectively established the C type folder mouth at the clamping slide-bar top of outer opening on one day.

Described bicycle is assisted shaft type shock-absorbing front fork device, it is characterized in that: between the upper notch bottom land of lower slider and the elastic element top top flat is set, can supports the adjustable bolt that reaches top flat and establish an ora terminalis in lower slider end face spiral shell.

Described bicycle association shaft type shock-absorbing front fork device is characterized in that: the folder mouth proximal end place of brake permanent seat places the bolt that crosses folder mouthful, and is placed through between the bottom land and bolt of C type folder mouth from the slide-bar that the last slide opening of upper saddle passes.

Implement after the above-mentioned technical conceive, effect of the present utility model is: the elastic force tightness that can adjust elastic element by adjustable bolt, and when elastic element during because of the long-term use elastic fatigue, also can change, and when desiring to go out to do expedition, can change the stronger elastic element of rigidity, such as if elastic element is with the spring setting, but the thicker spring in thread-changing footpath.

Further specify architectural feature of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is installed on the scheme drawing of bicycle body for the utility model.

Fig. 2 is an exploded drawings of the present utility model.

Fig. 3 is an outward appearance assembly drawing of the present utility model.

Fig. 4 is that illustration is implemented in damping action of the present utility model.

See also shown in Figure 1, bicycle provided by the utility model is assisted shaft type shock-absorbing front fork device, be to be mounted between bicycle headstock pipe 11 and the front-wheel wheel shaft 12, it has front fork frame 2, front fork frame 2 left and right sides are respectively established a side lever 21, and on side lever 21, establish upper and

lower slide

23,25, wheel seat 31 slide-bars 311 for the below wear, and engage sleeves is located at cushion rubber 4 on the slide-bar 311 and the elastic element 3 between lower slider 25 and the wheel seat 31, and reach slippage and vibration-absorbing function up and down, its thin bilge construction describes in detail as the back:

Please consult Fig. 2 simultaneously, shown in 3, its member is a left side, right symmetry, comprise front fork frame 2, wheel seat 31, brake permanent seat 5 and elastic element 3, cushion rubber 4, top flat 255, and screw 53, wherein, front fork frame 2 is like the inverted U design, its end face central part protrudes a bicycle headstock pipe stationary magazine creel 201, stationary magazine creel 201 tops also are provided with elongated slot 202 and outside thread 203, with in bicycle headstock pipe 11 (as shown in Figure 1), combine with the bicycle handle standpipe, and be made as side lever 21 in the front fork frame 2 lower part left and right sides, need the suitable space of tool so that the displacement of front-wheel vertical tremor to be provided between two side levers 21, still rotated, and in side lever 21 stage casings and a bottom prominent upper saddle 23 and the lower slider 25 established towards wheel the place ahead respectively, on being somebody's turn to do, lower slider 23, the also coaxial last slide opening 231 that runs through up and down that is provided with reaches slide opening 251 down on 25, establish an opening down in following slide opening 251 1 sides of lower slider 25 in addition, the upper notch of inserting for elastic element 3 253, these upper notch 253 end faces also are provided with an adjustment screw 254, establish for adjustable bolt 252 spiral shells.

The wheel seat 31 of being located at front fork frame 2 belows is a blocks, its bottom extension downwards is provided with wheel shaft fixing port 312, embed fixing for axletree 12, and in wheel seat 31 end faces, following slide opening 251 and upper notch 253 positions with respect to lower slider 25, be equipped with slide-bar 311 and reach shrinkage pool 313, this slide-bar 311 up passes the following slide opening 251 of lower slider 25 and the last slide opening 231 of upper saddle 23 in regular turn, and pass a cushion rubber 4 of being close to upper saddle 23 end faces, should then can insert towards following shrinkage pool 313 of upper shed for the bottom of elasticity element 3.

Establish an inverted U-shaped design-calculated brake permanent seat 5 in addition in front fork frame 2 the place aheads, its two end is established the C type folder mouth 51 of outer opening on one day, and the two side at folder mouthful 51 proximal end places is provided with perforation and screw relatively, to place the bolt 53 that crosses folder mouth 51, just can be placed through from the slide-bar 311 that the last slide opening 231 of upper saddle 23 passes between the bottom land and bolt 53 of C type folder mouthfuls 51, and mat bolt 53 screws tight folder mouthfuls 51, and the permanent seat 5 that promptly brakes lock onto on the slide-bar 311.

And the two ends of elastic element 3 are mounted on respectively in the upper notch 253 of the following recess 313 of wheel seat 31 and lower slider 25, wherein, between the bottom land of upper notch 253 and elastic element 3 tops, establish with top flat 255, when desire is adjusted the elastic force of elastic element 3, be screwed into or spiral shell pine adjustable bolt 252, the elastic force that can adjust elastic element 3 is pine tightlier or.

See also damping action of the present utility model shown in Figure 4 and implement scheme drawing, cooperate shown in Figure 3, the head tube stationary magazine creel 201 of front fork frame 2 is located in the head tube, the wheel shaft fixing port 312 of being located at the bottom then is fixed on the wheel shaft 12 of front-wheel, in the middle of driving, wheel can cause chatter phenomena because of the road surface is concavo-convex, this phenomenon produced one upwards application force reach wheel seat 31 from axletree 12, use compression elastic element 3, and make slide-bar 311 following slide opening 253 and on slide up and down in the slide opening 231, after vibration force disappears, elastic element 3 is promptly replied extension because of the elastic force of accumulating, the two ends folder mouthfuls 51 that moves down into brake permanent seat 50 to slide-bar 311 supports and is affixed on till the cushion rubber 4 of upper saddle 23 end faces, and so the phenomenon perseveration just can provide a kind of wheel shock-absorbing function.

When the user thinks that damping elasticity is too soft, the adjustable bolt 252 of being located at lower slider 25 end faces can be screwed in a suitable distance, the end face pushing and pressing top flat 255 of adjustable bolt 252 is moved down, and then compression elastic element 3 to one appropriate amounts, opposite, if when thinking that damping elasticity is too hard, then can unscrew adjustable bolt 252.

Claims

1. a bicycle is assisted shaft type shock-absorbing front fork device, it is characterized in that:

Comprise the front fork frame, be located at the wheel seat of front fork frame down either side, be located at the elastic element between front fork frame two ends and the wheel seat, cushion rubber and brake permanent seat, wherein, each extends a side lever downwards front fork frame both sides, in the side lever stage casing and a bottom prominent upper saddle and the lower slider established towards wheel the place ahead respectively, on being somebody's turn to do, the also coaxial last slide opening that runs through up and down that is provided with reaches slide opening down on the lower slider, last slide opening top and the corresponding cushion rubber that is affixed on the upper saddle end face that is provided with, establish an opening down in following slide opening one side of lower slider in addition, the upper notch of inserting for elastic element

2. bicycle as claimed in claim 1 is assisted shaft type shock-absorbing front fork device, it is characterized in that: between the upper notch bottom land of lower slider and the elastic element top top flat is set, supports the adjustable bolt that reaches top flat and establish an ora terminalis in lower slider end face spiral shell.

3. bicycle as claimed in claim 1 is assisted shaft type shock-absorbing front fork device, it is characterized in that: the folder mouth proximal end place of brake permanent seat places the bolt that crosses folder mouthful, and is placed through from the slide-bar that the last slide opening of upper saddle passes between the bottom land and bolt of C type folder mouth.