CN2136797Y

CN2136797Y - Buffer shock-proof device for bicycle

Info

Publication number: CN2136797Y
Application number: CN 92232917
Authority: CN
Inventors: 向茂祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-16
Filing date: 1992-09-16
Publication date: 1993-06-23
Anticipated expiration: 2002-09-16

Abstract

The utility model relates to a buffering damper for a bicycle. A hollow annular damper 60 is installed at the position slightly below a seat cushion 30 at the interface of a front triangular main bicycle frame 10 and a rear triangular fork frame 20 of the bicycle, and thereby, the hollow annular damper 60 can be locked and positioned with the interface part of the front triangular main bicycle frame 10 and the rear triangular fork frame 20. Consequently, the buffering damper which can achieve comfortable riding effect by a simple, convenient and handy structure is formed; in addition, the utility model can bear the impact up and down and the torsional force left and right without being additionally provided with any steering joint when the bicycle runs.

Description

Buffer shock-proof device for bicycle

The utility model relates to a kind of bicycle buffering and shock preventing device.The utility model can be very simple and easy and be installed in easily on the bicycle, and can bear the upper and lower impact and the left and right sides torsion of vehicle frame.

The modern bicycle producer all makes every effort to structure in design and can try one's best simply, makes the cyclist operate control easily, and can save muscle power, and whole bicycle structure is tending towards simplifying simultaneously, is convenient to maintenance.

In recent years, the design of bicycle more aspires after perfection, and requirement can make the cyclist have comfortable driving to unload sense, for making the cyclist more comfortable, some producer improved on cushion, and this improvement no all roses, and mode then is an installing buffering and shock preventing device on vehicle frame preferably.

Standard bicycle buffering and shock preventing device is of a great variety, modal spiral compression spring, and polyureas ester PU packing element, oil hydraulic cylinder or air cylinder, even use jointly with coil spring combination and oil hydraulic cylinder or air cylinder.These frame modes all have its characteristic separately, but its common shortcoming is to increase too many weight on bicycle, and structure is too complicated.

For example when using coil spring or polyureas ester PU packing element, except need with the guide rod fixed journey system, in the bicycle running way, can't bear and alleviate wigwag motion torsion.And use oil hydraulic cylinder or air cylinder, and when cooperating arcuate movement, must the installing steering knuckle, cost height not only, structure is numerous and diverse, and maintenance is inconvenient, and oil hydraulic cylinder or air cylinder cause damage because of leakage of oil or gas leakage easily.

The purpose of this utility model provide a kind of can be very simple and easy and be installed in easily on the bicycle, and can bear the upper and lower impact and the left and right sides torsion of vehicle frame, features simple structure, light and handy bicycle buffering and shock preventing device.

Advantage of the present utility model and good effect are significant.The utility model is at the intersection installing buffering and shock preventing device 60 of front and

back vehicle frame

10,20, when bicycle is advanced, produce the comfortable damping shock-proof effect, integral structure is quite easy and light and handy, avoided existing bicycle buffering and shock preventing device complex structure, shortcomings such as cost height, maintenance are difficult for are a kind of quite practical innovative designs.

Describe advantage of the present utility model and characteristics in detail below in conjunction with accompanying drawing embodiment.

Fig. 1 is that the utility model is installed in an enforcement illustration on the bicycle.

Fig. 1-A is the stressed scheme drawing of the utility model Shock absorber.

Fig. 2 is the three-dimensional view of an embodiment of the utility model Shock absorber.

Fig. 3 is a Shock absorber element exploded view shown in Figure 2.

Fig. 4 is the constructional drawing of the utility model main ring circle (outer shroud).

Fig. 5 is another embodiment scheme drawing of the utility model.

Referring to Fig. 1, the main truss of Regular Bicycle is made of preceding triangle main car frame 10 and Vee formation shape crotch 20.Principal feature of the present utility model is: along angle of cut place, above-mentioned preceding triangle main car frame 10 back, be positioned at the summary below of seat cushion 30, and between the last angle of cut place of Vee formation shape crotch 20, install a hollow annular Shock absorber 60.

Referring to Fig. 2, Fig. 3, in the present embodiment, above-mentioned hollow annular Shock absorber is by the bigger outer shroud 61 of diameter, place the less interior ring 62 of outer shroud 61 hollow interior diameters, and the soft shock-absorbing elastomeric pad 63 that is installed between the inner and

outer ring

61,62 constitutes.Outer shroud 61, interior ring 62, elastomeric pad 63 have certain width, outer shroud 61 is preset with

perforation

64,65,66,67 with above-mentioned front and

back vehicle frame

10,20 connections, interior ring correspondence position also is provided with

perforation

66,67, interior ring 62, outer shroud 61 and elastomeric pad 63 and above-mentioned front and

back vehicle frame

10,20 give interlocking by

default perforation

64,65,66,67 with

bolt

68,69, as shown in Figure 1.The hollow annular Shock absorber 60 of the utility model also can be fixed on forward and backward spider junction by intermediate plate interlocking mode, and the intermediate plate two ends can be locked with bolt.

Above-mentioned ring plate material can adopt high tension composite material or alloy, and outer shroud 61 is the bigger elastic material structure of distortion, and 62 on interior ring is the less supporting construction of distortion.And comparatively ideal ring plate is a composite structure, can be intersected with various angle

multiple fields

71,72,73,74,75 by lamination coating (glass, fortified resin laminates such as carbon fibre) to work out (as shown in Figure 4).

With embodiment illustrated in fig. 2 is benchmark, and the utility model can have multiple enforcement moulding and variation.Wherein the structure with the soft elastic caoutchouc pad 63 of installing in the middle of the described inner and

outer rings

61,62 is the best.But only under the normal load condition, also can reach desirable effect with simple hollow outer shroud 61.

Consult Fig. 1, when bicycle used, the gravity of cyclist and bicycle was perpendicular to ground-surface directed force F 1, and F2 is its antagonistic force then, and the bob of trailing wheel when bicycle is advanced passes to default buffering and shock preventing device 60 by Vee formation shape crotch 20.Thereby be center of rotation with the B point, form the arcuate movement that the C point is ordered to D.So annular Shock absorber 60 of the present utility model can bear the compressive force F3 of movement in a curve shown in Fig. 1-A and the distortion that expansion force F4 causes.The utility model is simple in structure, and deformation range is big, need not install any steering knuckle fully.

Referring to Fig. 5, the utility model Shock absorber removes as described above, can adopt simple hollow outer shroud 61 to use, or as most preferred embodiment as described in Fig. 2,3 with the elastic construction of outer shroud 61 and in establish outside the structure of a soft elastic caoutchouc pad 63 between the supporting construction of ring 62, can also adopt ring and pad repeated application in the multilayer, use to adapt under the different various situations of shock-absorbing stress intensity.

Claims

1, a kind of bicycle buffering and shock preventing device, it is characterized in that: before bicycle triangle main car frame 10 and Vee formation shape crotch 20 above the junction, the seat cushion 30 slightly position of below is installed a hollow annular Shock absorber 60, described annular Shock absorber 60 and described preceding triangle main car frame 10 and Vee formation shape crotch 20 give the interlocking location respectively from the inboard of annular Shock absorber 60.

2, by the described bicycle buffering and shock preventing of claim 1 device, it is characterized in that: described hollow annular Shock absorber 60 is positioned over the less interior ring 62 of outer shroud in-to-in diameter by an outer shroud 61,, and a soft elastomeric pad 63 that is positioned between inner and outer ring constitutes.

3, by the described bicycle buffering and shock preventing of claim 1 device, it is characterized in that: described hollow annular Shock absorber 60 is made of single ring plate 61.

4, by the described bicycle buffering and shock preventing of claim 1 device, it is characterized in that: the interior ring 62 and the elastomeric pad 63 that can repeat to install multilayer in the outer shroud 61 of described hollow annular Shock absorber 60.