CN2141393Y

CN2141393Y - Shock-absorbing bicycle frame

Info

Publication number: CN2141393Y
Application number: CN 92240753
Authority: CN
Inventors: 俞兴初; 沈兆南; 吴凤
Original assignee: Individual
Current assignee: Yu Xingchu
Priority date: 1992-11-18
Filing date: 1992-11-18
Publication date: 1993-09-01
Anticipated expiration: 2002-11-18

Abstract

The damping bicycle frame has one vertical pipe with cushion and middle shaft separated from the rigid frame, one pair of side rods hinged to the ends of the vertical pipe and connected to the inclined beams of the frame, and one elastic part on the special joint to support the weight of human body for suspension. The bicycle frame vibration damper can buffer translation and swing, and the swing is just the main vibration form of the bicycle frame.

Description

Shock damping frame of bicycle

The utility model relates to damping bicycle stand, belongs to technical field of bicycles, and it is applicable to ordinary bicycle, portable bicycle, Mountain bike, race bicycle, Electrical Bicycle etc.

The vehicle frame of bicycle always is a rigidity, and promptly vehicle frame is a rigid structural member, and seat cushion (putting aside seat cushion spring), pedal are rigidly fixed on the vehicle frame, and front-wheel and trailing wheel also rigidity are installed on the vehicle frame.Like this, the wheel bounce that causes of Uneven road will directly be passed to the cyclist by vehicle frame.Also there is the minority bicycle that various shock absorption devices have been installed on front and back wheel, for example application number 87 2 05343 utility model bicycle shock absorption devices.They copy motor bike, increase shock absorption device between wheel and vehicle frame, generally all want two covers.Yet seat cushion, pedal and vehicle frame remain rigidly connected, so any vibrations of vehicle frame will directly affect the cyclist.

The purpose of the utility model damping bicycle stand is exactly the way that adopt to suspend, and provides a kind of simple in structure, reliable, rides comfortablely, light, and might significantly improve the novel bicycle rack of the speed of a motor vehicle.

Damping bicycle stand is formed (see figure 1) by the two large divisions: pipe 1 and oblique Beam 6 before its part comprises.Can settle front fork 11 and handlebar 2 by usual practice in the preceding pipe 1, also can settle front fork 11 and handlebar 2 by general shock absorption device.Front-wheel 10 is installed on the front fork 11.Manage on 1 before tiltedly the front end 6-1 of Beam 6 is fixed in.Tiltedly the rear end 6-2 of Beam 6 installs trailing wheel 7.This part of vehicle frame will be followed beating of front and back wheel 10,7 and be done along the C.C.W. swing.Another part of vehicle frame is made up of standpipe 4, special joint 3 and pair of links 8.Standpipe 4 is connected with oblique Beam 6 movably by special joint 3.The upper end 4-1 of standpipe 4 installs seat cushion 5, shaft device 9 and hinged with the front end 8-1 of connecting rod 8 during lower end 4-2 installs.The rear end 8-2 of connecting rod 8 is hinged with the rear end 6-2 of oblique Beam 6.This part of vehicle frame relies on the buffer action of special joint 3 when riding, and will be with the cyclist to realize suspending.

Tiltedly Beam 6 can be " worker " font rod member, also can constitute (see figure 2) by two pipe 13R arranged side by side and 13L and their attaching parts 12,14.The two ends of attaching

parts

12,14 are fixed in respectively on pipe 13R and the 13L, the front end 13R-1 of pipe 13R and 13L and 13L-1 and preceding pipe 1 are affixed, rear end 13R-2 and 13L-2 install rear wheel 7, and be hinged with rear end 8R-2 and the 8L-2 of connecting rod 8R and 8L respectively simultaneously.

Special joint 3 is formed (see figure 3) by slide plate 16, standpipe spring 18, flange 17 and tension spring 15,19.The middle part of slide plate 16 is offered circular hole 16-1 and is assigned standpipe 4.Cover is with standpipe spring 18 on the standpipe 4, and the lower end 18-2 of this standpipe spring 18 contacts with slide plate 16, and upper end 18-1 contacts with flange 17 on the standpipe 4.The front end 16-2 of slide plate 16 tangles anterior attaching parts 12 to oblique Beam 13 by tension spring 15, and the rear end 16-3 of slide plate 16 tangles rear portion attaching parts 14 to oblique Beam 13 by tension spring 19.Like this, standpipe 4 can not only be made the buffering of up and down translation under the effect of standpipe spring 18, and can be under the effect of

tension spring

15,19 makes the swing buffering around the hinge-point of the front end 8-1 of connecting rod 8.

During cycling, the chance that two wheels synchronous simultaneously upwards (or downwards) are beated is few.But only when this was few, bicycle rack was just done translation up and down.Seat cushion spring only is suitable for cushioning translation up and down.Most situations are wheels motionless (about referring to) during cycling, and another wheel upwards (or downwards) is beated, or a wheel upwards, and another wheel moves downward.No matter being which kind of situation, all is the instantaneous rotation (this fixed point must on the line of front and back wheel shaft) around a fixed point concerning vehicle frame.This rotation just causes vehicle frame to swing back and forth along C.C.W. continuously.The principal mode of vehicle frame vibrations during Here it is cycling--be swing rather than translation.This swing can't absorb and eliminate by seat cushion spring on the ordinary bicycle.

Damping bicycle stand can address this problem preferably.It is with the overwhelming majority of complete vehicle quality--and cyclist's (quality of cyclist account for car load 3/4ths) is arranged on the standpipe 4, because the oblique Beam 6 of 4 pairs of vehicle frames of standpipe can make the buffering of swing, and the fixed point of this swing buffering drops on again on the line of front and back wheel shaft just, during so the bicycle of employing damping bicycle stand is advanced, how do not have wheel front and back wheel 10,7 beats, although they can drive oblique Beam 6 and do along the C.C.W. swing, but after dual effective damping of 3 pairs of rotations of special joint, translation, the vibrations of really passing on the standpipe 4 are just very weak.Standpipe 4 is manned, and 3/4ths quality are stablized, and car load is ridden and will be seemed very steady, can reduce the consumption that is used to this part energy of shaking together with the people effectively.If refill on the front-wheel 10 with common shock absorption device, the damping effect of car load will be more outstanding.

Beating of ordinary bicycle front-wheel can cause whole vehicle frame to swing around hind axle, passes to the shake that seat cushion almost becomes front and back.This shake has not only greatly limited the raising of the speed of a motor vehicle, and the cyclist can't be born.Therefore, usually the inflation of the front-wheel of bicycle can only reach seven minutes full.Like this, the distortion of front-wheel just greatly, can increase the rider resistance in advancing.Front-wheel 10 inflations of employing damping bicycle stand bicycle can be very sufficient, thereby can reduce the consumption of this part energy that overcomes squeegee action.

Ordinary bicycle buffering vertical tremor mainly is a seat pad spring.Its work the time makes the relative position of people's seat cushion and pedal in continuous variation, and this stroke is big will be unfavorable for the performance of the power of pedaling.And the relative position that remains seat cushion and pedal during damping bicycle stand special joint 3 buffering vertical tremors is constant.So just might reduce the rigidity of spring, strengthen cushion stroke, strengthen damping effect.

The bicycle of general band shock absorber all is the forward shock absorption device buffering of taking turns of front wheel bouncing, and trailing wheel is beated and cushioned by the rear wheel shock-absorbing device.Here, two cover shock absorption devices are " parallel connections ", and the swing of leaving vehicle frame after damping for still can not get buffering.In the damping bicycle stand, if adorned shock absorption device on the front-wheel 10, then because special joint 3 can cushion swing, needn't add shock absorption device again on the trailing wheel 7, the shock absorption device that can use front-wheel 10 of beating of trailing wheel 7 is cushioned.Here, shock absorption device is " series connection " in the shock absorption device of front-wheel 10 and the vehicle frame.Moreover a cover shock absorption device of 3 li of special joints will seem simple, reliable compared with the shock absorption device of general trailing wheel.

Because damping bicycle stand can cushion swing and translation preferably simultaneously, therefore the bicycle of dressing up with it not only can reduce overload, make bearing and other framing member reduce impulsive force, prolong parts service life, it is inevitable comfortable, light to ride such bicycle, and has created condition for further improving the speed of a motor vehicle.

Claims

1, a kind of damping bicycle stand, pipe 1 before comprising, settle front fork 11 and handlebar 2 and standpipe 4 in it, it is characterized in that oblique Beam 6 front end 6-1 and preceding pipe 1 are affixed, rear end 6-2 installs trailing wheel 7, described standpipe 4 is connected with oblique Beam 6 movably by a special joint 3, and standpipe 4 upper end 4-1 settle seat cushion 5, shaft device 9 during lower end 4-2 settles, pair of links 8 its front end 8-1 and standpipe 4 lower end 4-2 are hinged, and the rear end 8-2 of connecting rod 8 is hinged with the rear end 6-2 of oblique Beam 6.

2, damping bicycle stand according to claim 1, it is characterized in that wherein said oblique Beam 6 comprises two pipe 13R arranged side by side and 13L and the front and back attaching parts 12 and 14 that is connected them, the two ends of attaching parts 12,14 are fixed in respectively on pipe 13R and the 13L, the front end 13R-1 of pipe 13R and 13L and 13L-1 and preceding pipe 1 are affixed, rear end 13R-2 and 13L-2 install rear wheel 7, and be hinged with rear end 8R-2 and the 8L-2 of connecting rod 8R and 8L respectively simultaneously.

3, damping bicycle stand according to claim 1, it is characterized in that, wherein said special joint 3 comprises slide plate 16, the position, intermediate portion is offered circular hole 16-1 and is assigned standpipe 4, cover is with standpipe spring 18 on the standpipe 4, this standpipe spring 18 lower end 18-2 contact with slide plate 16, upper end 18-1 contacts with standpipe 4 upper flanges 17, slide plate 16 front end 16-2 tangle anterior attaching parts 12 to oblique Beam 13 by tension spring 15, and slide plate 16 rear end 16-3 tangle rear portion attaching parts 14 to oblique Beam 13 by tension spring 19.