CN203032829U

CN203032829U - Tandem leisure bicycle

Info

Publication number: CN203032829U
Application number: CN 201220748431
Authority: CN
Inventors: 金宙渊
Original assignee: TIANJIN PROMADE SPORTS MACHINE Co Ltd
Current assignee: TIANJIN PROMADE SPORTS MACHINE Co Ltd
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-07-03
Anticipated expiration: 2022-12-31

Abstract

The utility model relates to the technical field of bicycle manufacturing, in particular to a tandem leisure bicycle. The tandem leisure bicycle includes a transmission device, a front wheel, a rear wheel and a bicycle frame supported by the front wheel and the rear wheel, wherein the bicycle frame is mainly composed of an upper tube, a middle tube, a lower tube, a front supporting tube, a front seat supporting tube, a rear seat supporting tube, a front fork and a rear folk, the front end of the upper tube is fixedly connected with the front fork, the rear end of the upper tube is respectively connected with the rear end of the lower tube and the lower end of the rear seat supporting tube and is supported on a rear center shaft; one end of the middle tube is fixed on the rear seat supporting tube, while the other end is supported on a front center shaft; two ends of the lower tube respectively are supported on the front center shaft and the rear center shaft; the front seat supporting tube is supported on the front center shaft; and the rear seat supporting tube is fixedly connected with the rear fork. The tandem leisure bicycle utilizes a fixing mode that the upper tube, the middle tube and the lower tube are crosswise welded mutually, thereby reducing the size of the bicycle and facilitating the riding of a user.

Description

Double leisure bicycle

Technical field

The utility model relates to bicycle manufacturing technology field, relates in particular to a kind of double leisure bicycle.

Background technology

Because progress of industry, the national life level improves, and the use of vapour, locomotive has the trend that improves year by year.

But the waste gas that gives off owing to vapour, locomotive can pollute air, badly influences the green-house effect of the earth, and then natural, ecological is produced destruction.So, there are many people to advocate energetically to drive own car with as the instrument of riding instead of walk, not only can reduce the use of automobile and help environmental protection and the saving energy, more can increase motion chance and entertaining and good for health, and these bicycles become instinct honest and clean, are fit to very much popular consumption.

Bicycle is required great effort when going up a slope as people's single rider very much, and bicycle band people is more sense inconvenience then, can not embody the collaborative spirit of cooperation simultaneously, and tandem bicycle then can overcome single defective of riding.Yet, tandem bicycle is stepped on stretcher simultaneously in order to make two people at present, not mutual touching again, so vehicle body must be lengthened in design, yet, vehicle body after the lengthening visually has inharmonic sensation, and the vehicle body after lengthening is when driving, and the radius of turning also relatively increases, and very easily falls down because of the shakiness of center of gravity; Some enterprise installs a change-speed box in order to make the bicyclist more laborsaving in the position of rear pedal at present, but it is laborsaving to show that through practice this change-speed box there is no the bicyclist, has increased the manufacturing cost of enterprise on the contrary.

The utility model content

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and a kind of double leisure bicycle is provided, and is convenient to doublely ride and get on or off the bus.

The utility model for achieving the above object, by the following technical solutions:

A kind of double leisure bicycle, comprise driving device, front and back wheel and be bearing in vehicle frame on the front and back wheel, it is characterized in that: described vehicle frame is mainly by last pipe, middle pipe, pipe, preceding support tube, front stall support tube, back seat support tube and front fork, back vent constitute down, and the described front end of going up pipe and front fork is affixed, go up pipe rear end are affixed and be bearing in afterwards on the axis with the lower end of the rear end of following pipe and back seat support tube respectively; One end of described middle pipe is fixed on the back seat support tube, the other end is bearing on the preceding axis; Before the two ends of described down pipe are bearing in respectively on the axis of on the axis and back; Described front stall support tube is bearing on the preceding axis; Described back seat support tube and described back vent are affixed.

Back sprocket wheel in the described driving device is provided with change-speed box.

Rear bar is installed on the described front stall support tube.

The beneficial effects of the utility model are: the utility model has dwindled the volume of bicycle because employing is gone up pipe, middle pipe, managed the fixed form of intersection welding mutually down, simultaneously, is convenient to the user get on or off the bus; Owing to have only a Rear Derailleur, reduced the manufacturing cost of enterprise on the one hand, on the other hand, be convenient to the user more and ride.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Among the figure: 1, go up pipe; 2, middle pipe; 3, manage down; 4, preceding support tube; 5, front stall support tube; 6, back seat support tube; 7, front fork; 8, back vent; 9, back axis; 10, rear bar; 11, preceding axis; 12, change-speed box.

The specific embodiment

Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in Figure 1, a kind of double leisure bicycle, comprise driving device, front and back wheel and be bearing in vehicle frame on the front and back wheel, described vehicle frame mainly by last pipe 1, middle pipe 2, manage 3 down, preceding support tube 4, front stall support tube 5, back seat support tube 6 and front fork,

back vent

7,8 constitute, the described front end of going up pipe 1 and front fork be 7 affixed, on manage 1 rear end respectively with the lower end of the rear end of pipe 3 down and back seat support tube 6 affixed and be bearing in after on the axis 9; One end of described middle pipe 2 is fixed on the back seat support tube 6, the other end is bearing on the preceding axis 11; Described down before the two ends of pipe 3 are bearing in respectively on the axis 11 and on the axis 9 of back; Described front stall support tube 5 is bearing on the preceding axis 11; Described back seat support tube 6 and described back vent 8 are affixed.Preferably, for the ease of riding easily, the back sprocket wheel in the described driving device is provided with change-speed box 12.In the utility model, described rear bar 10 is installed on the described front stall support tube.In driving device, two drive sprockets can be arranged to also can be arranged to be connected with rear drive sprocket respectively by the chain common rear drive sprocket that drives that links together, and drive respectively.

The utility model has dwindled the volume of bicycle because employing is gone up pipe, middle pipe, managed the fixed form of intersection welding mutually down, simultaneously, is convenient to the user get on or off the bus; Owing to have only a Rear Derailleur, reduced the manufacturing cost of enterprise on the one hand, on the other hand, be convenient to the user more and ride.

The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. double leisure bicycle, comprise driving device, front and back wheel and be bearing in vehicle frame on the front and back wheel, it is characterized in that: described vehicle frame is mainly by last pipe, middle pipe, pipe, preceding support tube, front stall support tube, back seat support tube and front fork, back vent constitute down, and the described front end of going up pipe and front fork is affixed, go up pipe rear end are affixed and be bearing in afterwards on the axis with the lower end of the rear end of following pipe and back seat support tube respectively; One end of described middle pipe is fixed on the back seat support tube, the other end is bearing on the preceding axis; Before the two ends of described down pipe are bearing in respectively on the axis of on the axis and back; Described front stall support tube is bearing on the preceding axis; Described back seat support tube and described back vent are affixed.

2. double leisure bicycle according to claim 1, it is characterized in that: the back sprocket wheel in the described driving device is provided with change-speed box.

3. double leisure bicycle according to claim 2, it is characterized in that: rear bar is installed on the described front stall support tube.