CN201559766U

CN201559766U - Portable folding bicycle

Info

Publication number: CN201559766U
Application number: CN2009202141831U
Authority: CN
Inventors: 庞明方
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-26
Filing date: 2009-11-26
Publication date: 2010-08-25
Anticipated expiration: 2019-11-26

Abstract

A portable folding bicycle, comprises a bicycle body, a folding chain, a foldable handgrip, a folding stand, a front fork, a front head pipe assembly, a front-wheel, a seat, a middle axle, a crank, a pedal, a crankset, a small flywheel, a chain and a trailing wheel, characterized in that the bicycle body is arranged in a bridge shape, the folding chain is arranged at the middle of the bicycle body, the foldable handgrip is unfolded to form a T shape, and folded to form a M shape, the folding stand can be subjected to the double joint folding of four linkages, and is matched between the foldable handgrip and the front fork and between the seat and the bicycle body, the crankset on the middle axle directly drives the small flywheel at high specific speed by the chain. Compared with the original bicycle, the whole structure and shape are more perfect and simpler, the cost is lower and the folding effect is better.

Description

Folding portable bicycle

Technical field:

The utility model relates to a kind of bicycle, particularly a kind of trundle, and folding effect is good, small and exquisite more portable bicycle after folding.

Background technology:

Existing frame is bigger, folding back effect is also unsatisfactory, though I have solved folding littler problem on the patent of ZL2005200439975, but because this patent is on some structure and in the technology cooperation, also there is some deficiency, therefore caused some defective and the cost of this product too high.

Summary of the invention:

The purpose of this utility model is to provide a kind of cost lower, folded structure cooperate better folding portable bicycle.The purpose of this utility model is achieved in that folding portable bicycle, comprise vehicle body, folded chain, the handgrip of can taking down the exhibits, folding stand, front fork, front pipe assembly, front-wheel, vehicle seat, axis, crank, pedal, chain wheel, small flywheel, chain and trailing wheel, it is characterized in that: described vehicle body is provided with for bridge shape, described folded chain is arranged on the centre of vehicle body, the described handgrip of taking down the exhibits becomes T-shaped when launching, be the river font during gathering, the doublejointed that described folding stand can be made four connecting rods folds, and be matched with and take down the exhibits between handgrip and the front fork, and between vehicle seat and the vehicle body, the chain wheel on the described axis is by the direct height ratio speed of chain transmission small flywheel.

The beneficial effects of the utility model are: the handgrip of can taking down the exhibits is more effective, locks more firmly during expansion, and the folding stand cost is lower, and expansion and folding more effective, and the structure of car load was with the moulding ratio was perfect more originally, letter saves, cost is lower, and folding effect is better.

Description of drawings:

Fig. 1 is the utility model structural representation

Fig. 2 is the utility model handle structure scheme drawing of can taking down the exhibits

Fig. 3 draws the back design sketch in for the utility model handgrip of can taking down the exhibits

Fig. 4 is the utility model folding stand structural representation

Fig. 5 is a scheme drawing in the utility model folding stand folding process

Fig. 6 is the utility model folding process design sketch

Fig. 7 finishes design sketch for the utility model is folding

Among the figure: 1---vehicle body, 2---folded chain, 3---the handgrip of can taking down the exhibits, 4---folding stand, 5---front fork, 6---front pipe assembly, 7---front-wheel, 8---vehicle seat, 9---axis, 10---crank, 11---pedal, 12---chain wheel, 13---small flywheel, 14---chain, 15---trailing wheel.

The utility model is described in further detail below in conjunction with accompanying drawing.

The specific embodiment:

According to Fig. 1～Fig. 6;

Described vehicle body 1 curved pipe-type material welding constitutes, and the middle folded chain 2 that connects is bridge shape during expansion, and front end connects front pipe 61, and trailing wheel 15 is installed in the rear end.

The described handgrip 3 of taking down the exhibits comprises: left and right handles 31, the double-deck comma shape sheet 32 that connects two band gap, two double-deck comma shape sheets 32 are sandwiched in the horse-hof shape sheet 33, horse-hof shape sheet 33 is middle to wearing certain axle bolt 34, backer's bolt 35 is also worn in the upper end of horse-hof shape intermediate plate 33, the one side of the comma shape sheet 32 of left hand handle has arc-shaped notch, there is a button hole 38 upper end, the comma shape sheet 32 of right handgrip ' one side have the protruding lip of arc, right comma shape sheet 32 ' the protruding lip of arc and the arc-shaped notch of left comma shape sheet just in time mesh, right comma shape sheet 32 ' on also have an eccentric shaft 37, one hook pin 361 is installed on the eccentric shaft 37, eccentric shaft 32 is gone back connection button 362, hook pin 361 and button constitute hook button 36 to 362, hook button 36 and button hole 38 cooperates, lock just left comma shape sheet 32 and right comma shape sheet 32 ', the whole handgrip 3 of taking down the exhibits of related then locking is (referring to Fig. 2, Fig. 3).

Described folding stand 4 comprises: go up pipe fitting 41, following pipe fitting 42, U-shaped bag sheet 43, two-tube section part 44 of 8 words, bracing frame 45, base 46, flute profile is towards part 47, last pipe fitting 41 bottoms are U-shaped bag sheet 43 fixedly, U-shaped bag sheet 43 has two pairs to perforation, two-tube section part 44 of 8 words fixed on following pipe fitting 42 tops, the last pore of two-tube section part 44 of 8 words is rotatably connected to perforation by the below of pin and U-shaped bag sheet 43 is a pair of, make two-tube section part of 8 words 44 and U-shaped bag sheet 43 form hinge effect, have one to disconnect section in the middle of the following pore of two-tube section part 44 of 8 words, be installed with cylinder 441 with threaded hole in the middle of in the following pore, be screwed with the bolt 442 of a band handle in the tapped bore of cylinder 441, the bottom of following pipe fitting 42 fixedly flute profile towards part 47, bracing frame 45 is shaped as frame metal rods of top end opening, the bottom of bracing frame 45 is installed in an end of base 46, the both ends of top bending opening penetrate the last a pair of in the perforation of U-shaped bag sheet 43, flat tube shape base tube 461 cooperates the plug 462 of a base, and mix bolt, form the base 46 of a two ends band pore, the pore of the base 46 1 ends bracing frame 45 that is rotatably connected, base 46 other end pores are rotatably connected (referring to Fig. 4 towards part 47 by pin and flute profile, Fig. 5)

Described front fork 5 is the front forks that are directly welded on the base 46 of handgrip folding stand 4;

Described front pipe assembly 6 comprises: 61, seven bowls 62 of front pipe, and interior pipe 63, front pipe 61 are captiveed joint with vehicle body 1 front end, and the base 46 of interior pipe 63 and handgrip folding stand 4 is captiveed joint, and interior pipe 63 is managed 61 by seven bowls 62 and front and is rotatably connected.

Claims

1. folding portable bicycle, comprise vehicle body, folded chain, the handgrip of can taking down the exhibits, folding stand, front fork, front pipe assembly, front-wheel, vehicle seat, axis, crank, pedal, chain wheel, small flywheel, chain and trailing wheel, it is characterized in that: vehicle body is bridge shape, folded chain is arranged on the centre of vehicle body, when launching, the handgrip of can taking down the exhibits becomes T-shaped, be the river font during gathering, the doublejointed that folding stand can be made four connecting rods folds, one folding stand is matched with can take down the exhibits between handgrip and the front fork, another folding stand is matched with between vehicle seat and the vehicle body, and the chain wheel of axis is by the direct height ratio speed of chain transmission small flywheel;

2. folding portable bicycle according to claim 1, its feature of wherein said folding stand also comprises, folding stand by last pipe fitting, following pipe fitting, U-shaped bag sheet, two-tube section part of 8 words, bracing frame, base and flute profile constitute towards part, last pipe fitting captive joint U-shaped bag sheet, two-tube section part of following pipe fitting captive joint 8 words and flute profile are towards part, the last pore of two-tube section part of 8 words is following to perforation is rotatably connected by pin and U-shaped bag sheet, have one to disconnect section in the middle of the following pore of two-tube section part of eight shape, be installed with a cylinder with threaded hole in the hole, the tapped bore of cylinder is screwed with the bolt of a band handle, the bracing frame bottom base that is rotatably connected, upper end are rotatably connected on the U bag sheet to perforation.

3. folding portable bicycle according to claim 1, wherein said front fork, its feature comprises that also termination is welded on the base of handgrip folding stand on the front fork.