CN104139820A - telescopic bike - Google Patents

Abstract

The invention discloses a telescopic bicycle, which comprises a main beam, a handlebar frame, a front wheel frame, a rear wheel, a middle pipe, a pedal disc and a seat cushion frame, wherein the front wheel frame penetrates through the front pipe of the main beam and is connected with the handlebar frame of a handlebar assembly; the rear end of the main beam is fixedly connected with the upper middle pipe; the main beam is connected with the pedal disc through a support rod, the upper end of the support rod is hinged with the main beam, and the lower end of the support rod is hinged with the pedal disc; the pedal plate is connected with the rear wheel through a flat connecting rod; the upper middle pipe is connected with the rear wheel through a vertical fork, the upper end of the vertical fork is hinged with the upper middle pipe, and the lower end of the vertical fork is hinged with the flat connecting rod; the seat cushion frame is inserted on the upper middle pipe. The bicycle of the invention has small volume after being folded, simple structure and convenient contraction and expansion.

Description

telescopic bike

technical field

The invention relates to the technical field of bicycles, in particular to a telescopic folding bicycle. the

Background technique

In order to carry the bicycle in the trunk of the car conveniently, various folding bicycles have appeared on the market, such as the patent No. "2006200613355", the Chinese patent titled "a telescopic and folding bicycle", the structure of which is Although the telescopic folding bicycle solves the problem of small volume after being folded, the structure of this telescopic folding bicycle is complicated, and the folding and unfolding are not convenient enough. the

Contents of the invention

The purpose of the present invention is to provide a telescopic bicycle with simple structure and convenient contraction and deployment. the

In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a telescopic bicycle, including a main beam, a handlebar frame, a front wheel, a front wheel frame, a rear wheel, a middle tube, a pedal plate and a seat cushion frame, and the front wheel frame Pass through the front tube of the main beam and connect with the handlebar frame of the handlebar assembly. The middle tube is divided into an upper middle tube and a lower middle tube. The lower end of the upper middle tube is provided with a card slot matched with the lower middle tube. The upper middle pipe and the lower middle pipe are locked and connected by a locking mechanism; the rear end of the main beam is fixedly connected with the upper middle pipe; The pedal plate is hinged; the pedal plate and the rear wheel are connected by a flat connecting rod; the upper middle tube and the rear wheel are connected by a vertical fork, the upper end of the vertical fork is hinged with the upper middle tube, and the lower end is hinged with the flat connecting rod; the seat cushion The rack is inserted on the upper middle tube. the

Preferably, the locking mechanism is a latch locking mechanism. the

Preferably, the seat cushion frame and the upper middle tube are locked by a quick disassembly mechanism. the

The present invention adopts the above-mentioned structure, the main beam, the support rod, the flat connecting rod and the vertical fork constitute a four-bar mechanism, pull the locking mechanism between the upper middle pipe and the lower middle pipe, hold the main beam and pull back, four The rods of the rod mechanism rotate relative to each other, and the front wheel and the rear wheel are attached together to complete the shrinking and folding of the bicycle; when the bicycle is unfolded, the rear wheel is fixed, and the front wheel is pushed forward until the lower middle tube is stuck in the upper middle tube slot So far, the bicycle is completed by locking through the locking mechanism. The telescopic bicycle of the present invention is simple in structure, convenient to fold, and also achieves the purpose of small volume after shrinking and folding. the

Description of drawings

Fig. 1 is the expanded schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the semi-shrinking and folding state of the present invention;

Fig. 3 is a schematic diagram of the fully retracted and folded state of the present invention.

In the figure: 1 main beam, 2 handlebar frame, 3 front wheel, 4 front wheel frame, 5 rear wheel, 6 middle tube, 61 upper middle tube, 611 card slot, 62 lower middle tube, 63 locking mechanism, 7 feet Pedal, 8 rods, 9 flat connecting rods, 10 vertical forks, 11 seat cushions, 12 quick disassembly mechanisms. the

Detailed ways

As shown in Figures 1, 2 and 3, a telescopic bicycle includes a main beam 1, a handlebar frame 2, a front wheel 3, a front wheel frame 4, a rear wheel 5, a middle tube 6, a pedal plate 7 and a seat cushion frame 11. The front wheel frame 4 passes through the front tube of the main beam 1 and is connected with the handlebar frame 2. The middle tube 6 is divided into an upper middle tube 61 and a lower middle tube 62. The lower end of the upper middle tube 61 is provided with a lower The card slot 611 matched with the middle pipe 62, the upper middle pipe 61 and the lower middle pipe 62 are locked and connected by the locking mechanism 63; the main beam 1 and the pedal plate 7 are connected by the strut 8, and the upper end of the strut It is hinged with the main beam 1, and the lower end is hinged with the pedal plate 7; the pedal plate 7 and the rear wheel 5 are connected by a flat connecting rod 9; the upper middle tube 61 and the rear wheel 5 are connected by a vertical fork 10, and the vertical fork 10 The upper end is hinged with the upper middle pipe 61 , and the lower end is hinged with the flat connecting rod 9 ; the cushion frame 11 is inserted on the upper middle pipe 61 and locked by the quick disassembly mechanism 12 . In this embodiment, the locking mechanism 63 is a latch locking mechanism. the

The card groove 611 that the upper middle tube 61 of the telescopic bicycle of the present invention cooperates with the lower middle tube 62 can also be set on the lower middle tube 62, and the card groove 611 can be set on the front side of the lower middle tube 62. Its principle is the same as that of the upper middle tube 61 position is the same. the

When shrinking and folding, pull out the locking mechanism 63 between the upper middle tube 61 and the lower middle tube 62, fix the rear wheel 5, hold the main beam 1 and pull it back, and the main beam 1, the support rod 8, and the flat connecting rod 9 The rods of the four-bar mechanism formed with the vertical fork 10 are relatively rotated, and the front wheel 3 and the rear wheel 5 are attached together to complete the shrinking and folding of the bicycle. the

When stretching, the rear wheel 5 is fixed, and the front wheel 3 is pushed forward until the lower middle tube 62 is stuck in the slot 611 of the upper middle tube 61, and locked by the locking mechanism 63, that is, the bicycle is unfolded. the

The telescopic bicycle of the present invention is simple in structure, convenient to fold, and also achieves the purpose of small volume after shrinking and folding.

The above description is only a preferred embodiment of the present invention, and of course it cannot be used to limit the scope of rights of the present invention. It should be pointed out that for those of ordinary skill in the art, any modification or equivalent replacement of the technical solutions of the present invention will Do not depart from the scope of protection of the technical solution of the present invention. the

Claims (3)

1. an extension bicycle, comprise girder (1), carrier (2), front-wheel (3), front wheel carrier (4), trailing wheel (5), middle pipe (6), foot-operated dish (7) and seat frame (11), front wheel carrier (4) connects through the front Guan Bingyu carrier (2) of girder (1), it is characterized in that: described middle pipe (6) is divided into upper intermediate tube (61) and lower intermediate tube (62), in the lower end of upper intermediate tube (61), be provided with the draw-in groove (611) coordinating with lower intermediate tube (62), between upper intermediate tube (61) and lower intermediate tube (62), by catch gear (63) locking, be connected; Girder (1) rear end is fixedly connected with upper intermediate tube (61); At girder (1), be connected by pole (8) with foot-operated coiling between (7), pole (8) upper end and girder (1) are hinged, and lower end is hinged with foot-operated dish (7); Between foot-operated dish (7) and trailing wheel (5), by flat pipe link (9), be connected; Between upper intermediate tube (61) and trailing wheel (5), by vertical fork (10), is connected, vertical pitch (10) upper end and upper intermediate tube (61) hinged, lower end and flat pipe link (9) are hinged; Seat frame (11) is inserted on upper intermediate tube (61).

2. extension bicycle according to claim 1, is characterized in that: described catch gear (63) is latch catch gear.

3. extension bicycle according to claim 1, is characterized in that: between described seat frame (11) and upper intermediate tube (61), by fast mechanism for assembling-disassembling (12), lock.