CN2492453Y - Double bicycle - Google Patents

Abstract

The utility model discloses a tandem bicycle suitable for two people to ride, which primarily comprises a front and a rear wheel (16, 10), a W-shaped frame (4), a front fork (1), a brake (2), a front and a rear handle bar (3, 6), a front and a rear seat (5,7), a front and rear pedal (11,22), a bracket (8), a front intermediate axle (14), a middle axle (12), a rear axle (9), a chain (13) and a saw disc (15). The utility model is characterized in that the W-shaped frame (4) is movably connected with the rear handle bar (6), the super-clutch saw disc (15) is connected to the axle roller of the front intermediate axle (14) and the middle axle (12), the super-clutch saw disc is formed by a flywheel (17) that is fixedly connected to a transmission chain wheel (21) through a bolt (18), an outer jacket of the chain wheel (19) is movably connected with an eccentric jacket (20). The utility model has simple structure and is flexible to ride, which can be independently operated by the front rider or by the rear rider with the other one keep stationery; therefore, the bicycle is more convenient, free and relax for the rider to ride.

Description

Tandem bicycle

Technical field

The utility model belongs to the vehicle, is specifically related to be fit to double tandem bicycle of riding.

Background technology

At present, bicycle mostly is single rider, on the tandem bicycle market as amusement and recreation sale is arranged also, but demand is little, and this mainly is because some shortcoming of tandem bicycle is restricting: 1, the tandem bicycle structure is not compact, and is dumb in the process of riding; 2, first people is the active bicyclist, and second people locates driven status, and bicycle can not advance when the former does not ride, and the former rides, and when the latter did not ride, though vehicle travels in the same old way, the latter's both feet will be followed foot-operated the rotation passively; Light when 3, the latter locates subordinate status and do not have by bike freely felt.

Technology contents

The purpose of this utility model is: design a kind of tandem bicycle, adopt the overdrive clutch member, both can the driven vehicle before and after making, and the opposing party can keep quiet relatively moving state during side driving, allows the person of riding that freedom is more arranged.

Technical solution of the present utility model is: this tandem bicycle mainly includes parts such as front and back wheel, W type vehicle frame, front fork, brake, front and back handlebar, seat, front and back, front and back are foot-operated, support, preceding axis, axis, rear axle, chain wheel, be characterized in, flexibly connect rear bar on the W type vehicle frame, connect overdrive clutch chain wheel parts on the beaming roller of preceding axis, axis, described overdrive clutch chain wheel parts are connected on the speed-changing chain through bolt by flywheel and constitute, and eccentric bushing puts outside screw flexibly connects sprocket wheel.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model overdrive clutch chain wheel structural representation

Fig. 3 is the utility model eccentric bushing mounting structure scheme drawing

Among the figure: axis, 15 chain wheels, 16 front-wheels, 17 flywheels, 18 bolts, 19 sprocket wheel overcoats, 20 eccentric bushings, 21 sprocket wheels, 22 rear treadles before 1 front fork, 2 brakes, 3 front trucks handle, 4W type vehicle frame, 5 front seats, 6 rear bars, 7 back seats, 8 supports, 9 rear axles, 10 trailing wheels, 11 foot-operated, 12 axis, 13 chains, 14.

Specific implementation method

As shown in Figure 1, this tandem bicycle mainly include front-wheel 16, trailing wheel 10, W type vehicle frame 4, front fork 1, brake 2, front truck 3, parts such as foot-operated 11,22, the support 8 of rear bar 6, front seats 5, back seat 7, front and back, preceding axis 14, axis 12, rear axle 9, chain wheel 15, chain 13, its characteristics as shown in Figure 2, chain wheel 15 before being installed on axis 14, the axis 12 is the overdrive clutch chain wheel, be that described chain wheel 15 is fixedly connected on the speed-changing chain 21 by bolt 18 by flywheel 17 and constitutes, be connected with eccentric bushing 20 through bolt on the sprocket wheel overcoat 19.

The utlity model has following advantage: 1, this car adopts overdrive clutch chain wheel, energy Make the more convenient freedom of cyclist light, but both driven vehicles namely, as by front The person rides, and it is static that latter can keep riding, and the latter rides, and the former also can It is static that maintenance is ridden; 2, can relatively rotate 60 ° between eccentric bushing and the sprocket wheel overcoat, In order to timely adjustment chain elasticity; 3, rear bar is movable installs, and allows the latter also produce Bicycle operated sensation.

Claims (3)

1, tandem bicycle, this car owner will include front and back wheel (16,10), W type vehicle frame (4), front fork (1), brake (2), front and back handlebar (3,6), seat, front and back (5,7), front and back foot-operated (11,22), support (8), preceding axis (14), axis (12), rear axle (9), chain (13), chain wheel parts such as (15), it is characterized in that: connect overdrive clutch chain wheel (15) on the beaming roller of preceding axis (14), axis (12), described overdrive clutch chain wheel (15) is fixedly connected on speed-changing chain (21) by flywheel (17) through bolt (18) and goes up formation.

2, tandem bicycle according to claim 1 is characterized in that: W type vehicle frame (4) is gone up and is flexibly connected rear bar (5).

3, tandem bicycle according to claim 1 is characterized in that: sprocket wheel overcoat (9) is gone up and is flexibly connected eccentric bushing (20).

Images