CN2294906Y

CN2294906Y - Easy bicycle for two persons

Info

Publication number: CN2294906Y
Application number: CN 97232603
Authority: CN
Inventors: 申勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-10
Filing date: 1997-04-10
Publication date: 1998-10-21
Anticipated expiration: 2007-04-10

Abstract

The utility model is composed of a front and a back bicycle frames, a front and a back handlebars, a front and a back wheel, front and back pedals, a front and a back transmission chains. The utility model is characterized in that a driven chain gear is fixedly coupled with a back driving chain wheel; a ratchet wheel and a ratchet mechanism are arranged between a front and a back middle shafts and a front and the back driving chain wheel; an adjusting device is arranged on the front transmission chain. Because the utility model is provided with the transmission mechanism, two persons can simultaneously ride for advancing and can alternatively ride for advancing when the two persons rides the bicycle; the bicycle can be used for physical exercise and can simultaneously increase the riding entertainment; the utility model is easy to control.

Description

Double leisure bicycle

The utility model relates to a kind of bicycle, is a kind of outdoor activity bicycle for two uses specifically.

Bicycle is people's the vehicle still not, also are leisure, the apparatus of taking exercises.Chinese patent CN1068074U discloses a kind of two bicycle of stepping on, and this car comprises two handle, two-seater, two axis, two chain drums, messenger chain and a flywheel and a vehicle frame, and this car two people use, and form tacit agreement and concern, and are recreational.Yet because this car employing is two chain drums, a messenger chain is during use, two people must move simultaneously, and the rider can not alternately have a rest like this, and two people cooperate fine could the use, use a messenger chain in addition, make messenger chain long, its degree of tightness is difficult for adjusting, and is fragile.

The purpose of this utility model provides a kind of double use, the bicycle that can alternately have a rest again simultaneously.

The utility model realizes by following means, by front and back vehicle frame 3 and 6, front and back handlebar 2 and 5, front and back wheel 1 and 8 and front and back foot-operated 13 and 18 and two messenger chains 14 in front and back and 11 form.Axis 19 or 20 places all are installed with ratchet and ratchet before and after it is characterized in that; Driven sprocket 12 is fixedly connected with back drive sprocket 21, in the bottom of front and back vehicle frame 3 and 6 support 16 is installed, and the setting device 15 that matches with preceding messenger chain 14 is installed on it.

Setting device 15 is hinged by an end and support 16, the other end connecting rod 22 is installed and be installed in connecting rod 22 two

ends pinch roller

23 and 26 and elastic draw bar 24 form.

Flywheel 10 places of trailing wheel 8 of the present utility model are installed with change-speed box 9.

Of the present utility model reasonable in design, simple in structure, not only can two people use simultaneously, alternately have a rest when can also two people using, promptly can be used as the vehicle, can be used as the apparatus that leisure, joy are eastern, take exercises again.

Below in conjunction with Figure of description and embodiment the utility model is described in detail:

Description of drawings: Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to scheme drawing;

Fig. 3 is the local enlarged diagram of Fig. 1.

Among the figure, 1 is front-wheel, and 2 is preceding, and 3 is front vehicle frame, and 4 is front stall, 5 is the back handle, and 6 is the back vehicle frame, and 7 is back seat, and 8 is trailing wheel, and 9 is change-speed box, 10 is flywheel, and 11 is the back messenger chain, and 12 is driven sprocket, and 13 is rear treadle, and 14 is preceding messenger chain, 15 is setting device, and 16 is support, and 17 is drive sprocket, and 18 is preceding foot-operated, 19 is preceding axis, and 20 is the back axis, and 21 is the back drive sprocket, and 22 is connecting rod, 23 is pinch roller, and 24 is elastic draw bar, and 25 is pole, and 26 is pinch roller.

Embodiment

As can be seen, front and back of the present utility model vehicle frame 3 and 6 connects firmly together, constitutes an integral body from accompanying drawing 1, and each component part and single bicycle are basic identical.Inventive point of the present utility model just is its running part, between preceding axis 19 and preceding drive sprocket 17 ratchet, ratch mechanism has been installed, and the preceding drive sprocket 17 of foot-operated 18 drives rotates to a direction before making; Driven sprocket 12 connects firmly with back drive sprocket 21 and is integral, one group of ratchet ratch mechanism has also been installed between the axis 20 in both and back, making rear treadle 13 drive the back drive sprocket rotates to a direction, preceding messenger chain 14 matches with preceding drive sprocket 17 and driven sprocket 12, form front driving mechanism, back drive sprocket 21 is by the back messenger chain 11 composition rear drive mechanism that matches with change-speed box 9 on the flywheel 10.The utility model has also been installed one group of setting device 15 on preceding messenger chain 14, messenger chain 14 before adjusting makes it reach best transmission effect.This device 15 is installed on the support 16 that connects firmly with front and back vehicle frame 3 and 6, it is hinged by an end and support 16, the other end is installed with connecting rod 22 and is installed in the

pinch roller

23,26 and elastic draw bar 24 compositions at connecting rod 22 two ends, and

pinch roller

23,26 intersections match with preceding messenger chain 14; And adjust the application force of messenger chain 14 before 23,26 pairs of the pinch rollers by elastic draw bar 24.For the ease of depositing, Vehicle Frame Design of the present utility model can be become the folding structure.Because above-mentioned transmission device has been arranged, make when two people ride, can drive simultaneously to move ahead, can two people alternately drive to walk again, take exercises simultaneously, increased ride recreational, and grasped than being easier to.

Claims

1, double leisure bicycle, it is by former and later two supports (3) and (6), former and later two handlebars (2) and (5), front and back wheel (1) and (8) and front and back foot-operated (13) and (18) and two messenger chains in front and back (14) and (11) are formed, it is characterized in that two axis (19) and (20) locate all to be installed with ratchet and ratchet, driven sprocket (12) is fixedly connected with back drive sprocket (21), support (16) is installed between the bottom of front and back vehicle frame (3) and (6), the setting device (15) that matches with preceding messenger chain (14) is installed on it.

2, double leisure bicycle according to claim 1 is characterized in that the pole (25) that setting device (15) is joined by an end and front vehicle frame (3) bottom and pinch roller (23) and (26) at connecting rod (22) that is installed in pole (25) other end and connecting rod (22) two ends form.

3, double leisure bicycle according to claim 1 is characterized in that flywheel (10) locates to be installed with change-speed box (9).

4, double leisure bicycle according to claim 1 and 2 is characterized in that also being shaped on elastic link (24) between the pole (25) of setting device (15) and the support (16).