CN2920801Y

CN2920801Y - Tilt folding shaft folding bicycle

Info

Publication number: CN2920801Y
Application number: CN 200620003649
Authority: CN
Inventors: 曹金山
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-13
Filing date: 2006-02-13
Publication date: 2007-07-11
Anticipated expiration: 2016-02-13

Abstract

A tilt folding shaft folding bicycle, relating to a bicycle is provided, a girder of the folding bicycle is divided into a front girder and a rear girder by a clinoaxis which is not vertical with the girder; a handlebar, a front fork, a front wheel and other common techniques bicycle parts are arranged at the front of the front girder; a clinoaxis is also arranged on the rear girder, the rear girder is connected with an upright girder on which a saddle is arranged by the clinoaxis; a rear wheel is arranged at the rear part of the rear girder. Owing to the axis, which connects the front girder and the rear girder, is declining, therefore, after the front girder and the handlebar, the front fork and the front wheel arranged on the front girder rounded the clinoaxis and contrarotated to realize the fold, they rostagger and overlap with the rear girder and the rear wheel which is connected with the rear girder each other. With the same reason, after the upright girder and the saddle which is connected with the upright girder rounded the clinoaxis and carried out a clockwise rotation, the upright girder and the saddle also overlap with the one side of the rear girder and are caught in the middle. The folding bicycle is most applicable to be used for waiting bus and riding underground.

Description

Oblique folding shaft folding bicycle

Technical field the utility model relates to a kind of oblique folding shaft folding bicycle, belongs to the bicycle field.

The existing folding bicycle of background technology roughly is divided into two kinds of folding modes, i.e. side-foldable mode and forward folding mode.

Its folding shaft of the folded bicycle of side-foldable mode is perpendicular to horizontal surface, when folding, around folding shaft side direction rotary folding, front fork, front-wheel etc. is stacked together with rear wheel.Car load vehicle body after the advantage of side-foldable mode is to fold is shorter; Shortcoming is that folding step is more loaded down with trivial details, and operating process not too smoothly.

Forward its folding shaft of the folded bicycle of folding mode is a level, when folding, the front end of bicycle around folding shaft rotary folding forward, make front fork, front-wheel etc. and rear wheel before and after order put the two non-overlapping copies together.Forward the advantage of folding mode is the folding step simple and fast, and operation comparatively smoothly; Shortcoming is that the vehicle body after folding is longer.

Summary of the invention the utility model provides a kind of advantage that collects above two kinds of folding modes to be the oblique one by one folding shaft folding bicycle of folding bicycle all over the body.

The girder of folded bicycle is divided for the preceding fine strain of millet and the back rest by a girder inclined shaft, and the bicycle assembly parts of common technology such as handlebar, front fork, front-wheel is housed at the front end of front-axle beam; On the top of the back rest a upright beam inclined shaft is housed also, the upright fine strain of millet that the back rest is equipped with vehicle seat by this upright fine strain of millet inclined shaft and top links to each other; Usually the bicycle assembly parts of technology such as trailing wheel is housed at the rear portion of the back rest.

Because connecting the girder inclined shaft of the front-axle beam and the back rest is bevelled (both be not orthogonal to front-axle beam and also be not orthogonal to the back rest), so when front-axle beam and institute's bonded assembly handlebar thereof, front fork, front-wheel etc. behind girder inclined shaft rotary folding, just overlap with the back rest and institute's bonded assembly trailing wheel thereof.In like manner, behind upright beam inclined shaft on the back rest such as upright beam and institute's bonded assembly vehicle seat thereof (this axle not simultaneously perpendicular to the back rest and upright fine strain of millet, or be not orthogonal to the back rest and Li Liang simultaneously) rotary folding, found the side that beam and vehicle seat etc. also overlap the back rest and trailing wheel.Like this, adopting forward, the folding mode of folded bicycle has reached the folding back vehicle body of side-foldable mode than short purpose.

Description of drawings is described further below in conjunction with accompanying drawing:

Fig. 1 is the view that the utility model uses attitude.

Fig. 2 is the utility model folding process figure.

Fig. 3, Fig. 4, Fig. 5 are the three-view diagram of the utility model after folding, and wherein Fig. 3 be a front view, and Fig. 4 be a left view, and Fig. 5 is a birds-eye view, (in Fig. 4 and Fig. 5, with narrate the handlebar that has nothing to do, front fork, pedal etc. do not draw).

With reference to Fig. 1: by girder inclined shaft 4 front-axle beam 5 being linked to each other with the back rest 2 forms girder, the front end of front-axle beam 5 Handlebar, front fork and front-wheel 6 are housed, and trailing wheel 1 is equipped with in the rear end of rear fine strain of millet 2; The back rest 2 is by the vertical beam of its upper end Inclined shaft 3 links to each other with the vertical fine strain of millet 7 that vehicle seat is housed; Pegged graft by cramp bar epimere 8 and cramp bar hypomere 9 and to have formed Hold bar, cramp bar hypomere 9 is fixed on the back rest 2; Cramp bar epimere 8 links to each other with vertical beam 7 movable axis. (figure Middle handlebar, front fork, pedal, wheel disc etc. usually technology have been not described herein at this. )

Front and back wheel can be overlapping and make the car load width after folding littler, the girder inclined shaft in order to fold later on 4 is 1 to front-wheel 6 axles and its ratio to the air line distance of trailing wheel 1 axle: 1.1--1: between 1.3.

Fig. 2 is this folded bicycle folding process figure, presses the gripping mechanism (usually technology) on the back supporting rod, makes Cramp bar epimere 8 breaks away from cramp bar hypomere 9, and cramp bar epimere 8 is rotated to pressing close to vertical beam around movable axis 7, vertical beam 7 and back supporting rod epimere 8, vehicle seat etc. go to one of trailing wheel around 3 dextrorotations of vertical beam inclined shaft together Side. Equally, unclamp the locking device of girder inclined shaft 4 tops, make front fine strain of millet 5 and handlebar, front fork, front-wheel 6 etc. Be rotated counterclockwise to trailing wheel one side around girder inclined shaft 4 together, namely finished folding operation.

Girder inclined shaft 4 and upright fine strain of millet inclined shaft 3 bevelled angles in Fig. 4 and Fig. 5, have been reflected, (because from Fig. 1 to Fig. 3, the locus of the back rest 2, girder inclined shaft 4, upright beam inclined shaft 3 never changes, so, below the narration at girder inclined shaft 4, upright beam inclined shaft 3 angles of inclination all is as the criterion the position when this folded bicycle uses attitude upright with it.) as can be seen from Figure 5, the horizontal projection of girder inclined shaft 4, upright beam inclined shaft 3 respectively with the angle of the horizontal projection of girder 2: A is 93 degree--105 degree; B is 90 degree--105 degree.As can be seen from Figure 4, girder inclined shaft 4, upright beam inclined shaft 3 the projection on the right projecting plane respectively with the angle of the projection of the back rest 2 on right projecting plane: a is 75 degree--87 degree; B is 75 degree--90 degree.

As can be seen, front fork, front-wheel 6 after folding are overlapping together with trailing wheel 1 in Fig. 5, and vehicle seat after folding and upright fine strain of millet 7 have been placed between front-wheel 6 and the trailing wheel 1.

Specific embodiment the utility model mainly is the design at folding stand, and is more comfortable in order to ride, and can adorn a damping spring on strut bar epimere 8; In the use, though upright fine strain of millet inclined shaft 3 is bevelleds, because upright beam 7 is spent less than 6 with the variable angle of back fine strain of millet 2, the vehicle seat when riding swings scope in 1CM, so 3 pairs of these folded bicycles of the upright beam inclined shaft of bevelled use the damper spring damping not have much influences.The handlebar of this folded bicycle adopts common folding folding; The size of wheel disc and flywheel can be decided according to the size of front-wheel 6 and trailing wheel 1, is 12 cun than trundle before and after this example, so wheel disc is bigger.The use attitude of this folded bicycle is of a size of: long 115CM, the high 65--85CM of vehicle seat is of a size of after folding: long 58CM, high 35CM.This car suits to take it and takes buses such as subway.

Claims

1, a kind of oblique folding shaft folding bicycle connects the front-axle beam and the back rest respectively by the girder inclined shaft, and the front end of front-axle beam is equipped with handlebar, front fork and front-wheel, and trailing wheel is equipped with in the rear end of the back rest; It is characterized in that: the girder inclined shaft (4) that connects the front-axle beam (5) and the back rest (2) is a bevelled, and it both had been not orthogonal to front-axle beam (5), also was not orthogonal to the back rest (2); The back rest (2) links to each other with the upright beam (7) that vehicle seat is housed by upright beam inclined shaft (3), and upright beam inclined shaft (3) also is a bevelled, and it is not simultaneously perpendicular to the back rest (2) He Liliang (7), and upright beam inclined shaft (3) can not fall in the back rest (2) He Liliang (7) simultaneously yet; When front-axle beam (5) and front fork, front-wheel (6) together around the side of girder inclined shaft (4) left-hand revolution to trailing wheel, front-wheel (6) just in time is overlapping with trailing wheel (1), simultaneously, upright beam (7) and vehicle seat are around founding the side that beam inclined shaft (3) dextrorotation goes to trailing wheel (1), and upright beam (7) just in time has been placed between front-wheel (6) and the trailing wheel (1).

2, the described oblique folding shaft folding bicycle of claim 1 is characterized in that: this folded bicycle is when using attitude upright, and the angle of the horizontal projection of girder inclined shaft (4), upright beam inclined shaft (3) and the horizontal projection of the back rest (2) is respectively: A is the 93-105 degree; B is 90 degree-105 degree.

3, the described oblique folding shaft folding bicycle of claim 1, it is characterized in that: this folded bicycle is when using attitude upright, and the angle of girder inclined shaft (4), upright beam inclined shaft (3) projection on right projecting plane in the projection on the right projecting plane and the back rest (2) is respectively: a is the 75-87 degree; B is 75 degree-90 degree.

4, the described bicycle of claim 1 is characterized in that: girder inclined shaft (4) arrives the ratio of the straight-line distance of front-wheel (6) axle and the straight-line distance that girder inclined shaft (4) arrives trailing wheel (1) axle 1: 1.1-1: between 13.