CN2087171U

CN2087171U - Front driving light bicycle

Info

Publication number: CN2087171U
Application number: CN 90224399
Authority: CN
Inventors: 陶维鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-11-24
Filing date: 1990-11-24
Publication date: 1991-10-23

Abstract

The utility model relates to a portable bicycle with the front drive and the rear wheel steering, which mainly comprises a driving gear, handle bars, wheels, a bicycle frame, a seat board and a steering transfer mechanism. The driving gear is arranged on a front wheel, a rear wheel is used as a steering wheel, and the seat board drops down to the V-shaped bicycle frame arranged between the front wheel and the rear wheel. The steering transfer mechanism is arranged in the steel tube of the V-shaped bicycle frame, and the rotation of the handle bars can control the steering of the rear wheel through a drop center wheel, a transfer rope, etc. in the steering transfer mechanism. The utility model has the advantages of low center of gravity, comfortable and safe ride, faster speed, simple and sprightly appearance, and small occupation area.

Description

Front driving light bicycle

The utility model relates to bicycle, particularly a kind of bicycle of portable front drive and steering back wheel.

China is known as " bikedom ", because its structure is simple and clear, use flexibly, does not need advantages such as other energy, makes it become the main walking-replacing tool of present China urban and rural residents.But also there is some weak point in bicycle on the market at present, and for example: center of gravity is higher when riding, and less stable needs to suspend pin and is difficult to land, inadequately safety in riding; It is reasonable inadequately to ride the seat mode, easily causes defect such as hunchback, crotch's skin disease; Require great effort when scrunching, easily cause tired consumptive disease; Whole center of gravity height when riding, wind area is big, and the speed of a motor vehicle is difficult to improve.In order to overcome above-mentioned drawback, people constantly seek improvement project, and for example: application number is that " 87209054 ", denomination of invention have just been done improvement to above-mentioned some shortcoming for the patent application of " low center of gravity rear-axle steering two-wheel car ".It mainly is that position with seat board moves down, and center of gravity is reduced greatly.Type of drive becomes f-w-d.Steering mode becomes rear-axle steering.But it turn to transmission mechanism complicated, and be exposed to the outside of vehicle frame, not only influence attractive in appearancely, and floor area is bigger.

The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of bicycle that turns to transmission mechanism to be arranged on the portable front drive and steering back wheel in the vehicle frame steel pipe is provided.

How introduce the purpose of this utility model below in conjunction with accompanying drawing realizes.

Fig. 1 is integral structure scheme drawing of the present utility model (the car body top is people's the posture scheme drawing of riding among the figure).

Fig. 2 turns to the transmission mechanism scheme drawing in the utility model.

As shown in Figure 1, the utility model mainly includes driving mechanism 1, handlebar 2, wheel 3, vehicle frame 4, seat board 5 and turns to transmission mechanism. Its driving mechanism 1 is arranged between front-wheel axle center and the front frame, and drive principle is same as the prior art. Its seat board 5 is arranged on " V " type vehicle frame between two wheels, can reduce car body and bicyclist's whole center of gravity. After its front-wheel became driving wheel, then trailing wheel had just become deflecting roller. For the outward appearance that reduces floor space and make car concisely graceful, of the present utility model turning in the steel pipe that transmission mechanism is arranged on " V " type vehicle frame 4, each steel pipe is fixed together by joint 7,11,21. The visible Fig. 2 of its concrete structure has a drop center wheel 9 to be arranged on the vertical handgrip 10 in the front tab 7 that turns to transmission mechanism. Turn to that the rear tab 11 of transmission mechanism is interior to arrange one with the screw rod 12 of drop center wheel, at screw rod 12 gear 13 is set, another gear 13 that matches with it is arranged on the trailing wheel fork arm 18. This trailing wheel fork arm 18 links to each other with rear wheel fork 6. Between the drop center wheel on drop center wheel 9 and the screw rod 12, have one transmit rope 20 around. Arrange one and transmit rope tension-regulator 25 in that the center contact 21 of steering mechanism is interior, a screw rod 24 is arranged in its groove, a slide block 22 is arranged on the screw rod 24, slide block 22 sides are parallel to be arranged two regulating wheels 23 and is supporting and transmit rope 20. Can change the position of slide block 22 and regulating wheel 23 thereof by adjusting screw(rod) 24, be convenient to transmit thereby can regulate the tensioning degree that transmits rope 20. Parallelly two truckles 19 are set are supporting and transmit rope 20 in that joint 11 is interior, the resistance in the time of can reducing to transmit rope 20 and transmit. Around vertical handgrip 10, screw rod 12 and 18 3 rotatable parts of trailing wheel fork arm, be respectively arranged with steel ball 16, can make each parts transhipment flexibly. Be respectively arranged with seal cover 8 at three joints 7,11,21, be convenient to regulate its inner part of assembling, in also can blocks dust entering. In addition, above-mentioned said transmission rope can be steel wire rope, also can be nylon rope, and for the ease of transmitting, " V " shape steel tube that it passes through adopts oblate steel pipe.

The utility model center of gravity is low, good stability, and pin can conveniently land when needing to suspend in riding, and is safe and reliable. The posture of riding is sit lean type, and is pleasant, can prevent some " bicycle disease ". It is more reasonable to scrunch posture, firmly easily, is difficult for tired consumptive disease. The resistance of driving is littler, and the speed of a motor vehicle is very fast. Particularly its transmission mechanism that turns to is arranged in the vehicle frame steel pipe, makes its floor space little, and vehicle is succinctly attractive in appearance.

Introduce embodiment of the present utility model below.

Enforcement of the present utility model and prior art are basic identical.It is the wheel of 560mm that its wheel can adopt diameter, and according to different needs, the size of two wheels also can be different.Turn to transmission mechanism to assemble by Fig. 2, it turn to transfer principle as follows: the bicyclist handles handlebar 2, drive vertical handgrip 10, drop center wheel 9 is rotation simultaneously also, transmits the rope motion thereby drive, drive screw rod 12 and do rotation synchronously, make again then to be delivered to gear 13 rotations on it another gear that coincide with it and to rotate, from and drive trailing wheel fork arm 18, be delivered to rear wheel fork 6 at last, make its trailing wheel change of direction.

Claims

1, a kind of portable before driving bicycle, mainly include driver train 1, handlebar 2, wheel 3, vehicle frame 4, seat board 5 and turn to transmission mechanism, its driver train 1 is arranged between front-wheel axle center and the front frame, its seat board 5 is arranged on " V " type vehicle frame 4 between two wheels, it is characterized in that: said turning in the steel pipe that transmission mechanism is arranged on " V " type vehicle frame 4, each steel pipe is fixed together by joint 7,11,21; Turning in the front tab 7 of transmission mechanism has a drop center wheel 9 to be arranged on the vertical handgrip 10; Turn to the screw rod 12 that a band drop center wheel is set in the rear tab 11 of transmission mechanism, a gear 13 is set on screw rod 12, another gear 13 that matches with it is arranged on the trailing wheel fork arm 18, and this trailing wheel fork arm 18 links to each other with rear wheel fork 6; Between the drop center wheel on drop center wheel 9 and the screw rod 12, have one transmit rope 20 around; Be provided with one and transmit rope tension-regulator 25 in the center contact 21 of steering hardware, a screw rod 24 is arranged in its groove, a slide block 22 is arranged on the screw rod 24, slide block 22 sides are parallel to be provided with two tension wheels 23 and to support and transmit rope 20; Parallelly in joint 11 two small sheaves 19 are set are supporting and transmit rope 20; Around vertical handgrip 10, screw rod 12 and 18 3 rotatable parts of trailing wheel fork arm, be respectively arranged with steel ball 16; On three joints 7,11,21, be respectively arranged with seal cover cap 8.

2, portable before driving bicycle according to claim 1, it is characterized in that: said transmission rope can be a steel rope, also can be nylon rope, " V " shape steel tube that it passes through adopts oblate steel pipe.