CN2219251Y

CN2219251Y - Foldable bicycle

Info

Publication number: CN2219251Y
Application number: CN 95201674
Authority: CN
Inventors: 于本良
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-23
Filing date: 1995-01-23
Publication date: 1996-02-07
Anticipated expiration: 2005-01-23

Abstract

The utility model relates to a folding bicycle which is composed of a folding part and a fixed part, wherein, the folding part comprises the bracket of a front wheel, the bracket of a back wheel, a bicycle handle and a saddle, and the fixed part is composed of a bicycle frame, a foot board, a chain wheel and a chain. The conversion from use state to folding state or the conversion from folding state to use state which does not need any tool can be completed within half a minute. The utility model has the advantages of small volume, light weight, simple structure, portability, etc.

Description

Folding Bicycle

The utility model relates to a kind of portable and collapsible bicycle.

At present, in the vehicle, bicycle is a most convenient, most economical a kind of.It has energy-conservation, cost is low, to advantages such as road worthiness are strong, very popular.But because its volume is big, carry inconvenience, people can not ride instead of walk with it at any time at the whilst on tour of going out, and the range of use of bicycle is restricted.

The purpose of this utility model is that the relative section of bicycle can be folded.After folding, volume reduces 3/4ths, can put into travelling bag and carry, and uses at any time.Do not use any instrument, only need half a minute to finish.Will be to travelling outdoors, the field work personnel provide a kind of desirable portable walking-replacing tool.Bring convenience also for city dweller's bicycle storing difficulty,

The purpose of this utility model is realized by following scheme: Folding Bicycle, comprise housing, front-wheel support, trailing wheel, rear wheel support, left and right stretcher, vehicle frame, saddle, saddle bracing frame, vehicle frame (11) two ends are respectively equipped with preceding vertical shaft sleeve (24) and back vertical shaft sleeve (25), vertical shaft sleeve (24) bearing fit before front-wheel support vertical shaft (22) inserts, rear wheel support vertical shaft (23) inserts back vertical shaft sleeve (25) bearing fit, and front-wheel support vertical shaft (22) is gone up with bolt one handgrip blocking device (10); Saddle (13) is fixed by bolts on the saddle bracing frame (14), is contained under the saddle bracing frame (14) in the trailing wheel blocking device (15).

The utlity model has following effect and advantage: because it is made up of foldable portion and fixed part, foldable portion comprises front-wheel support, rear wheel support, handlebar and saddle, therefore car can be folded into minimum size, is easy to carry.This car by running condition to folded state or by folded state to running condition, need not any instrument, can in half a minute, finish, it is little, in light weight, simple in structure to have a volume, advantage such as easy to carry.

Below in conjunction with accompanying drawing, the utility model is elaborated:

Fig. 1 a-1c is the running condition outside drawing.

Fig. 2 a, 2b are folding scheme drawing of front-wheel and constitution diagram.

Fig. 3 is folding scheme drawing of left and right handlebar and constitution diagram.

Fig. 4 is folding scheme drawing of saddle and constitution diagram.

Fig. 5 a-5c is folding signal of trailing wheel and full car folded state diagram.

Fig. 6 a-6c is the handle bar locking apparatus constructional drawing.

Fig. 7 a carries on the handlebar opening folding scheme drawing down.

Fig. 7 b is a folding and press down the locking scheme drawing on the handlebar.

Fig. 8 a-8e is for rear wheel support lockout mechanism constructional drawing reaches folding, unlatching, locking scheme drawing down.

The utility model is by front-wheel (1), front-wheel support (2), left foot pedal (3), sprocket wheel (4), rear wheel support (5), trailing wheel (6), rear guard (7), front wheel guard (8), handlebar (9), handle bar locking apparatus (10), vehicle frame (11), right steps (12), saddle (13), saddle bracing frame (14), rear wheel support locking loading amount (15), rear wheel support locking key (16), rear wheel support locking keyway (17), handlebar lock pin (18), handlebar lockhole (19), chain (20), baggage rack (21), front-wheel support vertical shaft (22), rear wheel support vertical shaft (23), vertical shaft sleeve (25) formation behind vertical shaft sleeve (24) and the vehicle frame before the vehicle frame.

The utility model keystone configuration and use principle are: front-wheel (1) and trailing wheel (6) adopt minor diameter, wide wheel face bike tyre, and its diameter is equivalent to roll over back car load height.Be loaded on respectively on front-wheel support (2) and the rear wheel support (5).Front-wheel support can adopt the A-frame formula, also can adopt upright V shape.Rear wheel support adopts the A-frame formula.The front and rear wheel support is respectively equipped with vertical shaft (22) and (23).Vehicle frame (11) is that steel-tube construction, two ends are respectively equipped with forward and backward vertical shaft sleeve (24) and (25).In the vertical shaft sleeve (24), pulley bracket vertical shaft (23) inserted in the back vertical shaft sleeve (25) before front-wheel support vertical shaft (22) inserted, and was used for realizing folding.Handlebar (9) is the steel pipe foldable structure, and the bottom is contained in the Lock of handlebar mechanism (10).Handle bar locking apparatus (10), usefulness bolt are on front-wheel vertical shaft (22).Handlebar (9) drives vertical shaft (22) and front-wheel (1) turns to by rotating.

Fig. 6 a-6c and 7a, shown in the 7b, for the constructional drawing of handle bar locking apparatus (10) and locking, unlatching, down folding, on roll over scheme drawing.Blocking device (10) is in this device Shape; A lock pin (18) is respectively arranged in the groove at its two ends, leave bar shaped lockhole (19) in the handlebar lower end and be installed on the blocking device (10), be enclosed within lock pin (18) and go up and (see Fig. 7 a, 7b).When handlebar (9) is pressed down, when making lock pin (18) be positioned at lockhole (19) top, be lock-out state shown in Fig. 7 b.When handlebar (9) is carried on shown in Fig. 7 a, when making lock pin (18) be positioned at the bottom of lockhole (19), be opening, handlebar this moment (9) can be by rolling on the folding formula down shown in Fig. 7 a.

Saddle (13) is fixed by bolts on the saddle bracing frame (14).Saddle bracing frame (14) lower end is contained in the rear wheel support blocking device (15), and the saddle bracing frame has the support saddle and rear wheel support locks, the double action of unlatching.Fig. 8 a-8e is rear wheel support locking, unlatching scheme drawing.This device is by: saddle bracing frame (14), vehicle frame (11), rear wheel support (5) and saddle bracing frame processing all-in-one-piece locking key (16), lock pin (28) and open locking keyway (17) formation on vertical shaft sleeve behind the vehicle frame (25) and rear wheel support vertical shaft (23).Fig. 8 a, 8b, 8c represent that the saddle bracing frame is a running condition, and locking key (16) inserts in the locking keyway (17), and rear wheel support (5) is locked.Fig. 8 c, 8d represent that this device is opening, at this moment, roll under the saddle bracing frame (14) to vehicle frame (11) top, see shown in Fig. 4 arrow, locking key (16) rotates with saddle bracing frame (14), and the keyway that goes out of lock (17) can freely rotate the back wheeling supporting frame.

Chain drive-belt (20) but be the fold-type chain, sprocket wheel (4) for and the upright steel sprocket wheel that is complementary.Drive by left and right stretcher (3) and (12) respectively.

Baggage rack is a steel design, and its width is not more than the length of hind axle.

The method that makes of the present utility model is: when need be with the bicycle (Fig. 1 a-1c) of running condition when changing folded state into (Fig. 5 a-5c); Earlier front-wheel support (2) is pressed direction shown in (Fig. 2 b) arrow, nearly 180 ° of back rotation, and in the left side of support (11).Again with left and right handlebar (9) by upwards carrying on the arrow direction shown in Fig. 7 a, make the lock pin of two handlebars be positioned at the lockhole bottom, again by 180 ° of foldings down shown in the rotation arrow, and in vehicle frame (11) both sides.Saddle is rolled over to vehicle frame top before by direction shown in Fig. 4 arrow, at this moment, back wheeling supporting frame blocking device (15) is opened: locking key (16) keyway (17) that goes out of lock, trailing wheel can rotate, again rear wheel support be rotated nearly 180 ° by direction shown in (Fig. 5) arrow is preceding, and in the right side of vehicle frame (11), at this moment, full handlebar just is folded state.Volume only is 1/3rd of an original volume.

When rugosity will be returned to running condition, earlier trailing wheel (6) is threaded to the same axis of vehicle frame on, will roll over to running condition on the saddle (13), rear wheel support (5) is locked.Again with left and right handlebar (9), on roll over and press down, lock pin is contacted, handlebar locked (seeing Fig. 7 b) with lockhole top.Front-wheel is rotated nearly 180 ° forward then, this moment, full car was running condition.

Claims

1, a kind of Folding Bicycle, comprise front-wheel, front-wheel support, trailing wheel, rear wheel support, left and right stretcher, vehicle frame, saddle, saddle bracing frame, it is characterized in that: vehicle frame (11) two ends are respectively equipped with preceding vertical shaft sleeve (24) and back vertical shaft sleeve (25), vertical shaft sleeve (24) bearing fit before front-wheel support vertical shaft (22) inserts, rear wheel support vertical shaft (23) inserts back vertical shaft sleeve (25) bearing fit, and front-wheel support vertical shaft (22) is gone up with bolt one handgrip blocking device (10); Saddle (13) is fixed by bolts on the saddle bracing frame (14), and saddle bracing frame (14) lower end is contained in the rear wheel support blocking device (15).

2, Folding Bicycle according to claim 1 is characterized in that: handle bar locking apparatus (10) is

Shape respectively has a lock pin (18) in the groove at its two ends; Handlebar (9) lower end has bar shaped lockhole (19); Lock pin (18) passes handle bar locking apparatus (10) lower end and has bar shaped lockhole (19); Lock pin (18) passes the bar shaped lockhole (19) of handle bar locking apparatus (10) two ends groove and handlebar (9) lower end, and riveting is in the outside of handle bar locking apparatus (10) two ends groove.

3, Folding Bicycle according to claim 1 is characterized in that: rear wheel blocking device (15) is by saddle bracing frame (14), vehicle frame (11) and rear wheel support (5) the three parts formation that combines; Wherein saddle bracing frame (14) end is processed into a locking key (16); And milling out a locking keyway (17) jointly on vertical shaft sleeve (25) and the rear wheel support vertical shaft (23) behind the vehicle frame (11), vehicle frame, locking key (16) is rotation in locking keyway (17).