CN201002681Y

CN201002681Y - Folding bicycle

Info

Publication number: CN201002681Y
Application number: CNU2007200060629U
Authority: CN
Inventors: 黄森隆
Original assignee: YONGSEN MACHINE HARDWARE CO Ltd FUZHOU
Current assignee: YONGSEN MACHINE HARDWARE CO Ltd FUZHOU
Priority date: 2007-01-12
Filing date: 2007-01-12
Publication date: 2008-01-09
Anticipated expiration: 2017-01-12

Abstract

The utility model refers to a foldable bicycle, which includes a front wheel and a rear wheel, a seat cushion and a handle bar positioned on the frame. The frame forms a triangular structure by the foot-operated tube positioned with a foot operated, a support tube fixed with a seat cushion and a front fork tube fixed with the handle bar. The support tube of the extension-type structure and one end of the foot-operated tube are fixed on the rear axle shaft; the other end of the support tube is pivoted to the upper end of the front fork via a universal ball joint; the other end of the foot-operated tube is dynamically clipped in middle of the front fork tube via a buckle. The frame is of triangular structure, which is good in stability, balanced in stress distribution and convenient in opening and folding. Three pipe fittings that form the frame can come together and the front wheel and the rear wheel can be folded together only by unlocking a junction point on one corner of the triangular frame.

Description

Folding Bicycle

Technical field:

The utility model belongs to field of vehicles, relates in particular to a kind of Foldable bicycle.

Background technology:

Bicycle is liked by masses extensively as the manpower transportation, can ride instead of walk, also can be used as sports equipment.But because the standard bicycle volume is big, not portable, arbitrarily parks and not only take the place, and easily lose, bring uneasiness to people's life, work.At present, producer develops some small-sized or Foldable bicycles energetically, conveniently deposits in Che Nei or is carried into indoorly, does not take public parking area, and can significantly reduce vehicle and lose, and especially is subjected to liking of working clan and student.Existing folding bicycle as shown in Figure 1, comprise vehicle frame and the front and back wheel, seat cushion and the handlebar that are positioned on the vehicle frame, owing to consider folding, the vehicle frame front end is that single tube and front fork tube articulate, single tube is provided with the shaft contact of a rotatable folding, front fork tube and front-wheel can fold around shaft contact and trailing wheel, to save floor area.It also is existing folding bicycle structure Design common fault that vehicle frame adopts single tube and front fork tube to articulate, and makes binding and stressed thin between front and back wheel, certainly will increase the requirement that caliber reaches rigidity intensity, causes car body weight to increase.

Summary of the invention:

The purpose of this utility model is the defective that overcomes prior art, designs the Folding Bicycle that the stressed distribution of a kind of vehicle frame is reasonable, car body is light and handy.

Technical solutions of the utility model are achieved in that a kind of Folding Bicycle that comprises the front and back wheel, seat cushion and the handlebar that are positioned on the vehicle frame, wherein vehicle frame is formed a triangular structure by the front fork tube that is positioned with foot-operated foot-operated pipe, is fixed with the support tube of seat cushion and is fixed with handlebar, one end of the support tube of telescopic structure and foot-operated pipe is separately fixed on the hind axle, the other end of support tube is articulated in the front fork tube upper end by the multi-directional ball joint, and the other end of foot-operated pipe dynamically be located in the front fork tube middle part by hasp.Since vehicle frame triangularity structure, good stability, and stressed distributing equilibrium.

The utlity model has reasonable in design, open with folding easy to operately, only need open the point of connection at an angle of triangle frame, three pipe fittings forming vehicle frame can be closed up and front and back wheel folds; In addition then, it is reasonable that the triangular frame structure has stressed distribution, forms the pipe fitting of vehicle frame and also can select bore littler, can alleviate the weight of car body greatly, promotes the folding bicycle portability.

Description of drawings:

Below in conjunction with concrete legend the utility model is described further:

Fig. 1 has the folding bicycle scheme drawing now

Fig. 2 the utility model Folding Bicycle scheme drawing

Fig. 3 Fig. 2 K is to partial schematic diagram

Fig. 4 folded state scheme drawing

Fig. 5 handlebar and multi-directional ball joint concern scheme drawing

Fig. 6 handlebar folding scheme drawing

Wherein

The foot-operated pipe of 11-110-axle sleeve 12-support tube 120-nut

The protruding axle of 13-front fork tube 131-platform 132-133-snap close

134-sleeve pipe 2-rides 21-front-wheel 22-trailing wheel

220-hind axle 23-sprocket wheel 24-flywheel 3-seat cushion

4-handlebar 41-handgrip 42-bearing pin 5-multi-directional ball joint

The specific embodiment:

Comprise front and

back wheel

21,22, seat cushion 3 and the handlebar 4 that is positioned on the vehicle frame with reference to Fig. 2, Fig. 3 and Fig. 4, a kind of Folding Bicycle, wherein vehicle frame is formed a triangular structure by the front fork tube 13 that is positioned with foot-operated 2 foot-operated pipe 11, is fixed with the support tube 12 of seat cushion 3 and is fixed with handlebar 4.Foot-operated 2 pass to manpower on the flywheel 24 on the hind axle 220 of location by synchronous sprocket wheel 23, drive trailing wheel 22 and rotate, and this is a routine techniques, omits among the figure and transmits chain.

Described support tube 12 is a telescopic structure, is formed by the mutual intussusception of the pipe fitting of two sections different bores, is provided with at the large caliber pipe mouth place to pin nut 120.Telescoping support tube 12 can be when bicycle be opened, and self adaptation two wheelspans, and support tube 12 is fixed on this length by nut 120 are avoided driving stressed and changed.

Support tube 12 stands in the both sides of trailing wheel 22 with an end branch of foot-operated pipe 11, and is separately fixed on the hind axle 220.As Fig. 3, support tube 12 of this section and foot-operated pipe 11 camber shapes, the orthogonal projection of remainder and front and back wheel straight path are overlapping, can guarantee that seat cushion 3 or human body gravity are on the front and back wheel path of motion, drive comparatively stable.The other end of support tube 12 is articulated in front fork tube 13 upper ends by multi-directional ball joint 5.As Fig. 5, multi-directional ball joint 5 both can keep the reliable connection of support tube 12 and front fork tube 13, did not influence the swing of front fork tube 13 left rotation and right rotation again, realized the vehicle operation of turning round; The other end of foot-operated pipe 11 dynamically be located in front fork tube 13 middle parts by hasp, hasp is meant that an end solid welding of foot-operated pipe 11 has an axle sleeve 110, a platform 131 is extended at front fork tube 13 middle parts, platform is provided with up a protruding axle 132, axle sleeve 110 is sheathed on to form dynamically to detain on the protruding axle 132 and establishes, the axis of its convexity axle 132 is parallel with front fork tube 13 line of centerss, and it is more smooth that handlebar 4 is swung.In addition, be provided with one on the top of protruding axle 132 and can limit the swing snap close 133 that axle sleeve 110 is deviate from, make vehicle more complete, also avoid driving when rugged road surface, shaking and take off.

With reference to Fig. 6, handlebar is the quick elbow of slip pipe formula, comprise the sleeve pipe 134 that is fixed on front fork tube 13 upper ends, sleeve pipe 134 two ends slide pivot respectively are provided with left and right handles 41, handgrip 41 is the two sectional type structure, and middle by bearing pin 42 hinged location, wherein bearing pin 42 articulated sections can be slided in the retraction sleeve pipe 134, make the parallel or coaxial rigid construction of two handgrips 41 and sleeve pipe 134, form two handgrips 41 and meet the width that people control custom; When folding, only handgrip 41 need be pulled outward exposes the articulated section of bearing pin, then around 42 folding handgrip 41 can being closed up to the both sides of front fork tube 13 of bearing pin, reduces handlebar 4 and takes up room.

Folding bicycle folding operation process is as follows: as Fig. 3 Unclosing structure, at first that handlebar 4 is folding; Unclamp the nut 120 on the support tube 12 again, and open snap close 133, to ride on the pipe 11 and carry, axle sleeve 110 is deviate from the restriction of protruding axle 132, carry in the continuation and ride pipe 11 until closing up with support tube 12, this moment,

front fork tube

13 and 12 of support tubes only depended on multi-directional ball joint 5 to articulate, and swing front fork tube 13 makes front and

back wheel

21,22 process side by side, and 12 pairs of sections of support tube shorten the foldable integral relation of catering to automatically.Structure such as Fig. 4 after folding; Inverse operation can be opened bicycle, and swing snap close and jam nut are pulled out handgrip and can be ridden usefulness.

Claims

1, a kind of Folding Bicycle that comprises the front and back wheel, seat cushion and the handlebar that are positioned on the vehicle frame, it is characterized in that vehicle frame forms a triangular structure by the front fork tube that is positioned with foot-operated foot-operated pipe, is fixed with the support tube of seat cushion and is fixed with handlebar, one end of the support tube of telescopic structure and foot-operated pipe is separately fixed on the hind axle, the other end of support tube is articulated in the front fork tube upper end by the multi-directional ball joint, and the other end of foot-operated pipe dynamically be located in the front fork tube middle part by hasp.

2, Folding Bicycle according to claim 1 is characterized in that support tube is that the mutual intussusception of pipe fitting of two sections different bores forms, and is provided with the pinning nut at the large caliber pipe mouth place.

3, Folding Bicycle according to claim 1 is characterized in that foot-operated pipe and support tube branch stand in the both sides of trailing wheel, and is separately fixed on the hind axle.

4, Folding Bicycle according to claim 3 is characterized in that being in the support tube of trailing wheel section and rides pipe camber shape, and the orthogonal projection of remainder and front and back wheel straight path are overlapping.

5, Folding Bicycle according to claim 1 is characterized in that hasp is meant that an end solid welding of foot-operated pipe has an axle sleeve, and a platform is extended at the front fork tube middle part, and platform is provided with up a protruding axle, and axle sleeve is sheathed on protruding axle and goes up and form dynamically button and establish.

6, Folding Bicycle according to claim 1 or 5 is characterized in that the axis of protruding axle is parallel with the front fork tube line of centers.

7, Folding Bicycle according to claim 1 or 5 is characterized in that protruding axle top is provided with one and can limits the swing snap close that axle sleeve is deviate from.

8, Folding Bicycle according to claim 1, it is characterized in that handlebar is the quick elbow of slip pipe formula, comprise the sleeve pipe that is fixed on the front fork tube upper end, sleeve pipe two ends slide pivot respectively are provided with left and right handles, handgrip is the two sectional type structure, middle by the hinged location of bearing pin, wherein the bearing pin articulated section can be slided in the retraction sleeve pipe.