CN2228048Y

CN2228048Y - Damper for front fork of cycle

Info

Publication number: CN2228048Y
Application number: CN 95222560
Authority: CN
Inventors: 童介德
Original assignee: Giant China Co Ltd
Current assignee: Giant China Co Ltd
Priority date: 1995-09-29
Filing date: 1995-09-29
Publication date: 1996-05-29
Anticipated expiration: 2005-09-29

Abstract

The utility model discloses a vibration damper for front fork of cycle. The inner of the vertical pipes of the standpipes of bicycle handles is simultaneously provided with an elastic element and a hydraulic vibration damping device, and a sliding bush is arranged between the elastic element and the hydraulic vibration damping device to be a connecting component. The utility model makes the bicycle achieve the effect of vibration damping when the rider rides uphill and downhill, which has simple structure and easy assembly.

Description

The bicycle front fork Shock absorber

The utility model relates to a kind of automatic shock-proof device, especially a kind of bicycle front fork Shock absorber that has elastic element and hydraulic pressure shock absorbing apparatus simultaneously.

General bicycle is not provided with Shock absorber mostly, the derailleur cross-country car of current popular has stationarity and speed when driving on the level land, but during as if even alpine terrain uneven on the road surface, above-mentioned bicycle can't bear the vibrations that cause on concavo-convex road surface at all, it should be noted that vibrations that bicycle produces for rider's vibrations injury particularly seriously therefore, can install Shock absorber mostly on the front fork of at present the most popular mountain-climbing car (MTB) all activity vehicle (ATB), this expands the mountain area to rather than only is confined on the level land with regard to the footprint that impels bicycle, based on the characteristic of bicycle itself, even drive in the mountain area or still can adapt to during more jiggly road surface.Shock absorber structure with bicycle commonly used, it is at the inner installing of the hard pipe of front fork driver compression spring that a kind of shock-absorbing district is arranged, installing hydraulic pressure shock absorbing apparatus is also arranged, these two kinds of Shock absorbers can be brought into play due incabloc function for the road surface of general road and lower slope section, that is can also bear the application force that is produced from lower to upper that front fork bore, but road surface for the section of going up a slope, this compression spring or hydraulic pressure shock absorbing apparatus are subjected to the pressure effect that rider's elbow is executed, can offset the climbing power that the rider applies on the contrary and hinder to ride and sail, that is to say when going up a slope, the health of riding the person of sailing can drive in order to advancing to moving forward or standing up, so movement certainly will increase the weight of the strength of both hands, compression spring or hydraulic pressure shock absorbing apparatus are pressed and do not have the shock-absorbing effect, and when rider's foot pedal, also pressure can be imposed on compression spring or the hydraulic pressure shock absorbing apparatus, therefore cause downward strength major part vertically put on domatic on, rather than be parallel to the domatic strength of advancing, therefore the climbing power major part that causes the rider and applied is absorbed by the compression spring of front fork or hydraulic pressure shock absorbing apparatus or offsets, so that feel more arduous the uphill way rider, and vibrations are not lowered yet.

The purpose of this utility model is to propose a kind of bicycle front fork Shock absorber, riser interiors at driver's vertical tube is equiped with an elastic element and a hydraulic pressure shock absorbing apparatus simultaneously, and between is provided with a sliding sleeve as transom, makes bicycle all can reach shock-proof effect when upper and lower slope.

An of the present utility model purpose is to propose a kind of bicycle front fork Shock absorber, and its hydraulic pressure shock absorbing apparatus is simple in structure, assembling is easy, and can reach the shock-proof effect of expection.

Utility model realizes like this:

Shock absorbing apparatus of the present utility model travels when the road surface of uphill way.Though human body adds all pressure in driver's vertical tube elastic element is compressed a little, but effect through the hydraulic pressure shock absorbing apparatus, also has shock-proof effect, the disadvantage that the climbing power major part that the rider certainly of can being situated between is applied is absorbed or offsets by the compression spring of front fork or hydraulic pressure shock absorbing apparatus when going up a slope.And but stronghold deformationization or rider's build change that modulated pressure shock-absorbing power is simple in structure, assembling easily, can reach the shock-proof effect and the goal of the invention of expection.

Fig. 1, utility model embodiment combination section

Fig. 2, embodiment top plan view

Fig. 3, embodiment move scheme drawing

Now further narrate structure of the present utility model and embodiment in conjunction with the accompanying drawings:

Referring to Fig. 1-2: the bicycle front fork Shock absorber comprises the standpipe 20 of a head tube 10, driver's vertical tube, neck tube 30, a sliding sleeve 40, a front fork 50, a hydraulic pressure shock absorbing apparatus 60 and an elastic element 70 of driver's vertical tube, wherein:

Head tube 10 is the garden shape cylindrical shell of a hollow, is engaged between pipe and the following pipe, and the two ends of head tube are arranged with bulb stopper 111 respectively, steel ball 112, and pearl bowl 113 reaches pearl bowl 121 down, steel ball 122, following bulb stopper 123.

The standpipe 20 of driver's vertical tube is located in the inside of head tube 10, its two ends respectively with this on bulb stopper 111 and bulb stopper 123 is affixed down, its interior sidewall surface upper edge long axis direction is the inlay card position 21 that four roads are the groove shape that offers of equidistant spacing distance, its top is equiped with a closedtop ring 22, and standpipe central authorities are provided with a through hole 221.

The neck tube 30 of driver's vertical tube is installed in the outer ring surface place, standpipe 20 top of this driver's vertical tube, so that the rider grips handle to control the direction of front fork and front-wheel.

Sliding sleeve 40 is the hollow cylinder of a tool suitable length.21 places, inlay card position with respect to the standpipe 20 of driver's vertical tube on the outer ring surface of sliding sleeve are provided with the guiding position 41 that four roads are the raised line shape.When sliding sleeve 40 was located in the inside of this driver's vertical tube standpipe 20, this guiding position 41 was proper.Be and be embedded slidably in this inlay card position 21, and make sliding sleeve 40 can be subjected to driver's vertical tube standpipe 20 connection and rotate simultaneously, its top is provided with a shrouding 42; In addition, the inner ring surface at this sliding sleeve 40 sets firmly an internal lining pipe 80 with viscose glue gummed or other affixed mode.

The top front fork joint 51 of front fork 50 is set in the bottom of this internal lining pipe 80, can drive internal lining pipe 80, sliding sleeve moves during 40 ridges, and install a telescopic snake belly tube 90 on joint 51 tops and impel the top of snake belly tube 90 to be installed in the bottom of the standpipe 20 of driver's vertical tube.

Hydraulic pressure shock absorbing apparatus 60 comprises following apparatus: at the internal lining pipe 80 inner hydraulic pressure chambers 61 that form, the oil plant 100 that its inner filling shock-absorbing is used, at hydraulic pressure chamber 61 two ends leakproof element 621 is set respectively, 622, and hydraulic pressure chamber inside is equiped with a control cock 63, it can separate into hydraulic pressure chamber two interval A, B, being provided with an adjusting lever 64 at control cock 63 1 ends can pass from the through hole 221 of closedtop ring 22, and extend standpipe 20 outer ends of driver's montant, at adjusting lever 64 ends screw thread 641 is set, establish one at screw thread 641 place's spiral shells and adjust nut 65, adjust the position that nut 65 is adjusted control cock 63 by rotation, can make two interval A like this, the ratio of B changes, and adjusts shock-absorbing power with this.

Elastic element 70, adopt compression bullet Huang in an embodiment, be installed in standpipe 20 inside of driver's vertical tube, and the bottom is supported and is ended on the shrouding 42 of sliding sleeve 40 end faces, the top then is compressed on the bottom surface of this closedtop ring 22, adjust the position that nut 65 is regulated control cock 63 with rotation, can adjust the compressive force of elastic element 70, thereby further adjust shock-absorbing power.

Setting-up procedure of the present utility model is: the inside that earlier standpipe 20 of driver's vertical tube is located in head tube 10, by steel ball 112,122 effect, make the neck tube 30 of driver's vertical tube drive the standpipe 20 of driver's vertical tube in head tube 10 inner rotation, then closedtop ring 22 is set firmly standpipe 20 tops that are positioned at driver's vertical tube, and after elastic element 70 is installed in closedtop ring 22 medial surfaces, the sliding sleeve 40 that can will be combined into one, inner covering 80, front fork 50, hydraulic pressure shock absorbing apparatus 60 members such as grade penetrate from the bottom of the standpipe 20 of driver's vertical tube, and make guiding position 41 just be located in this inlay card position 21 standpipe 20 inside that can make sliding sleeve 40 be slidably and not to be set in this driver's vertical tube rotationally.

Referring to Fig. 3: when driving bicycle when advance in uneven road surface, bicycle front fork 50 can be felt vibrations, that is front fork 50 can be subjected to the antagonistic force that ground makes progress, and this front fork 50 can drive internal lining pipe 80 when vibrations produced, sliding sleeve 40 moves up, when the action that moves up produces, being arranged in the oil plant 100 that leakproof element 622 is understood hydraulic pressure chamber 61 interval A under internal lining pipe 80 in-to-ins pushes, and oil plant 100 can flow to another interval B via the oil pipe 631 of control cock 63, thereby arrives the effect of shock-absorbing; And this sliding sleeve 40 that is positioned at outer shroud is when the ridge that standpipe 20 interior sidewall surface along driver's vertical tube move up, this moment should guiding position 41 along inlay card position 21 slides within, elastic element 70 is pushed, and makes this elastic element 70 moment compressive state.

When elastic element 70 produces compressive state, itself screen resilience effect of mat, again with shrouding 42, members such as sliding sleeve 40 and front fork 50 are passed simultaneously downwards and are returned to original state, and when sliding sleeve 40 moves down, oil plant 100 in the interval B is subjected to being fixedly arranged on internal lining pipe 80 in-to-ins leakproof element 621 also simultaneously to the squeezing action that bottom offset produced, and is back to the interval A from another loop again.

The utility model travel on the road of uphill way and the time, though the pressure that human body puts on the neck tube 30 of driver's vertical tube can make elastic element 70 be compressed a little, the effect by hydraulic pressure shock absorbing apparatus 60 also has shock-proof effect.

Adjusting lever 64 ends are provided with screw thread 641, be to adjust the position that control cock 63 that these adjusting lever 64 ends set firmly is positioned at hydraulic pressure chamber 61 through rotate adjusting nut 65, and the space size of two interval A, B can be adjusted at any time, and can change or rider's build when changing greatly and adjust according to landform.

Claims

1, a kind of bicycle front fork Shock absorber, the standpipe of driver's vertical tube (20) is located in the inside of head tube (10), neck tube (30) is installed in standpipe item end outer ring surface place, in the inner elastic elements of standpipe (20) (70), it is characterized in that: at the sliding sleeve (40) of the inner installing of hollow standpipe (20) hollow cylinder, described sliding sleeve bottom and front fork joint (51) are affixed, shrouding (42) is established on the top, the sliding sleeve inner ring surface sets firmly an internal lining pipe (80), hydraulic pressure shock absorbing apparatus (60) is set in internal lining pipe (80), conflicts on the shrouding (42) of sliding sleeve end face in the bottom of elastic element (70).

2, by the described bicycle front fork Shock absorber of claim 1, it is characterized in that: inlay card position (21) is set on the standpipe interior sidewall surface, and the outer ring surface of sliding sleeve (40) is provided with guiding position (41), described guiding position slidably with inlay card position (21) socket.

3, by the described bicycle front fork Shock absorber of claim 1, it is characterized in that: hydraulic pressure shock absorbing apparatus (60) is two ends to be set have the anti-element (621) that belongs in sliding sleeve internal lining pipe (80), (622) hydraulic pressure chamber (61), be installed in hydraulic pressure chamber in-to-in control cock (63) and hydraulic pressure chamber be divided into (A), (B) two intervals, be provided with adjusting lever (64) at control cock one end, described adjusting lever extends the outer end of standpipe (20).