CN200985068Y

CN200985068Y - Double-folding bicycle

Info

Publication number: CN200985068Y
Application number: CN 200620016409
Authority: CN
Inventors: 吴育填
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-12
Filing date: 2006-12-12
Publication date: 2007-12-05
Anticipated expiration: 2016-12-12

Abstract

The utility model discloses a double folding bicycle, comprising the bicycle frame consisting of a front wheel frame, a beam, and a trailing wheel. The front wheel frame and the beam are connected by the back folding joints, and wherein, the front folding joints and the back folding joints are of the self locking cross folding joints, and they are folded in the contradictory way so as to make the front wheel frame and the trailing wheel frame fold up and round up in the cross way along the two sides of the beam. Meanwhile, the front folding and the back folding joints are connected by the unlocking linkage mechanism. If unlocking manually the back folding joint, the unlocking linkage mechanism enables the front folding joint to be unlocked at the same time. The utility model is more compact after being folded, and much easier to keep and carry with. With the utility model, the folding of the bicycle is lessened, and the operation is of great convenience, besides, the folded bicycle can be applied as one pulling luggage barrow.

Description

A kind of twofold bicycle

Technical field

The utility model relates to a kind of bicycle, particularly a kind of scalable or Foldable bicycle.

Background technology

The bicycle manufacturer is reduction bicycle body volume at present, one group of folding joint normally is set on the cross member of frame of bicycle, make bicycle body be divided into forward and backward two sections and be the folding relatively closing in center with the folding joint, with the entire length of reduction bicycle, and then have the reduction packing volume of timber, be convenient to the advantage of transporting and collecting.In addition, also handlebar can be carried out once more folding volume with further reduction bicycle.But the crossbeam of above-mentioned folding bicycle only can fold once, and the bicycle after folding still has the excessive phenomenon of volume to exist and have need improvements.

The utility model content

The purpose of this utility model is the defective at prior art, and the folding bicycle that a kind of cross member of frame can be laterally folded twice is provided, significantly to reduce the volume behind the bicycle folding.

For solving the problems of the technologies described above, the utility model has adopted following technical scheme: design a kind of twofold bicycle, comprise the vehicle frame of forming by front wheel frame, crossbeam and trailing wheel vehicle frame, be connected by preceding folding joint between front wheel frame and the crossbeam, be connected by the back folding joint between crossbeam and the trailing wheel vehicle frame, wherein preceding folding joint and back folding joint are the laterally folded joint that can automatically lock, and their folding direction is reverse each other, thereby makes front wheel frame and trailing wheel vehicle frame respectively towards the laterally folded gathering in crossbeam both sides; Simultaneously, preceding folding joint also links to each other by the release link gear between the folding joint with the back, when the back folding joint being carried out can make by the effect of release link gear when manual unlocking is operated the preceding folding joint state that unlocks simultaneously.

But described front wheel frame is provided with the handgrip standpipe that can contact to earth in longitudinal extension and bottom, but the trailing wheel vehicle frame is provided with the base riser that can contact to earth in longitudinal extension and bottom.Like this, after described front wheel frame and the gathering of trailing wheel vehicle frame folding, handgrip standpipe, base riser and front and back wheel constitute the feet of bicycle jointly, bicycle uprightly is fixed on the ground parks.

After described front wheel frame and trailing wheel vehicle frame folding drew in, front-wheel and trailing wheel were overlapped, at this moment, with the pull-up of handgrip standpipe, this folding bicycle can be used as the parallel trailer of a two-wheeled.Parallel in order to ensure front-wheel and trailing wheel is connected by fixed mechanism between the front fork of trailing wheel vehicle frame and front wheel frame.

Rope or the metal filament of described release link gear for passing via crossbeam inside, its two ends are connected on the release lever of preceding folding joint and back folding joint, and are in tight state all the time.When the user carries out the manual unlocking operation to the back folding joint, only need pull the release lever of back folding joint, the release lever of folding joint before the rotation of this release lever affects by rope or effect wiry, thus make it to rotate simultaneously remove before the lock-out state of folding joint.

The vehicle frame of the utility model twofold bicycle is divided into front wheel frame, crossbeam and three parts of trailing wheel vehicle frame by preceding folding joint and back folding joint, because vehicle frame can fold twice, makes more compact structure behind the bicycle folding, thereby is more convenient for depositing and carrying; In addition, because preceding folding joint links to each other by the release link gear between the folding joint with the back, when state that folding joint before afterwards folding joint carries out can making by the effect of release link gear when manual unlocking is operated is unlocked simultaneously, thereby shortened folding the time of bicycle, more convenient and quicker operates.

During normal the use, vehicle body in line, forward and backward folding joint is in the lock state; When needs are deposited or carry, with front wheel frame and trailing wheel vehicle frame respectively towards the laterally folded gathering in crossbeam both sides, and be put into handgrip standpipe and base riser minimum, contacted to earth in its bottom, like this, handgrip standpipe, base riser and front and back wheel constitute the feet of bicycle jointly, bicycle uprightly is fixed on the ground parks; At this moment, if with the pull-up of handgrip standpipe, also this folding bicycle can be used as the parallel push-and-pull baggage car of a two-wheeled, thereby expand its function and purposes.

Description of drawings

Fig. 1 is the structural representation of the utility model twofold bicycle in deployed condition.

Fig. 2 is the structural representation of back folding joint;

Fig. 3 is the structural representation of preceding folding joint;

The specific embodiment

As shown in Figure 1, twofold bicycle of the present utility model comprises the vehicle frame of being made up of front wheel frame 1, crossbeam 2 and trailing wheel vehicle frame 3, be connected by preceding folding joint 4 between front wheel frame 1 and the crossbeam 2, be connected by back folding joint 5 between crossbeam 2 and the trailing wheel vehicle frame 3, wherein preceding folding joint 4 and back folding joint 5 are the common on the market laterally folded joint that automatically locks, and their folding direction is reverse each other, thereby makes front wheel frame 1 and trailing wheel vehicle frame 3 respectively towards the laterally folded gathering in crossbeam 2 both sides.Because vehicle frame can fold twice, make more compact structure behind the bicycle folding, thereby be more convenient for depositing and carrying.

Figure 2 shows that the back folding joint 5 of twofold bicycle, it comprises and affixed preceding connecting panel 51 of crossbeam 2 and the back connecting panel 52 affixed with trailing wheel vehicle frame 3, preceding connecting panel 51 is hinged with back connecting panel 52, before be equipped with on the connecting panel 51 can axially movable locking bar 53, have the lockhole 54 that can insert locking bar 53 on the back connecting panel 52, the last knock hole 55 of connecting panel 51 before locking bar 53 passes, handle 8 is contained in locking bar 53 upper ends, can drive locking bar 53 and rotate.The guide block 56 on band inclined-plane is housed in the side of locking bar 53 on the preceding connecting panel 51, and its inclined plane ring is around in outside the locking bar 53.Be fixed with drive link 57 on the locking bar 53, drive block 57 can slide along the inclined-plane of guide block 56.Between the last knock hole 55 of locking bar 53 and preceding connecting panel 51 spring 58 is housed.Be fixed with the top board 59 that can touch drive link 57 with drive link 57 corresponding positions on the connecting panel 52 of described back.In the time will locking back folding joint 5, connecting panel 51 and back connecting panel 52 before closing up, the top board 59 on the back connecting panel 52 withstands drive link 57, and drive link 57 is moved along the inclined-plane of guide block 56, drives locking bar 53 and axially insert lockhole 54 under the spring force effect.Therefore connecting panel 51 and back connecting panel 52 before only need closing up, joint is auto lock just.Have a platform at beveled top end on the described guide block 56, when back folding joint 5 was opened, drive link 57 rested on this platform, avoided its inclined-plane along guide block 56 to glide.

Figure 3 shows that the preceding folding joint 4 of twofold bicycle, its structure is similar with the back folding joint, therefore no longer repeat specification.

In addition, before folding joint 4 also link to each other between the folding joint 5 with the back by the release link gear, this release link gear is preferably rope or the metal filament 6 that passes via crossbeam 2 inside, before its two ends are connected on the locking bar drive link 57 of the locking bar drive link 47 of folding joint 4 and back folding joint 5, and be in tight state all the time.When the user carries out the manual unlocking operation to back folding joint 5, only need pull the release lever 8 on the folding joint 5 of back, the rotation of this release lever 8 affects the locking bar drive link 47 of preceding folding joint 4 by the effect of rope or metal filament 6, thereby being rotated simultaneously, locking bar 43 removes the lock-out state of preceding folding joint 4, release lever 7 before need not pulling again on the folding joint 4, thereby shortened folding the time of bicycle, more convenient and quicker operates.

But described front wheel frame 1 is provided with the handgrip standpipe 9 that can contact to earth in longitudinal extension and bottom, but trailing wheel vehicle frame 3 is provided with the base riser 10 that can contact to earth in longitudinal extension and bottom.Like this, after described front wheel frame 1 and trailing wheel vehicle frame 3 folding gatherings in, front-wheel 11 and trailing wheel 12 are overlapped, and handgrip standpipe 9, base riser 10 and front and back wheel 11, the 12 common feets that constitute bicycle uprightly are fixed on the ground bicycle and park.At this moment, if with 9 pull-ups of handgrip standpipe, this folding bicycle can be used as the parallel trailer of a two-wheeled.In order to ensure front-wheel 11 and trailing wheel 12 keeping parallelisms, between the front fork 13 of trailing wheel vehicle frame 3 and front wheel frame, be connected by fixed mechanism.

Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the present utility model design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims

1. twofold bicycle, comprise the vehicle frame of forming by front wheel frame, crossbeam and trailing wheel vehicle frame, it is characterized in that: be connected by preceding folding joint between front wheel frame and the crossbeam, be connected by the back folding joint between crossbeam and the trailing wheel vehicle frame, wherein preceding folding joint and back folding joint are the laterally folded joint that can automatically lock, and their folding direction is reverse each other, thereby makes front wheel frame and trailing wheel vehicle frame respectively towards the laterally folded gathering in crossbeam both sides; Simultaneously, preceding folding joint also links to each other by the release link gear between the folding joint with the back, when the back folding joint being carried out can make by the effect of release link gear when manual unlocking is operated the preceding folding joint state that unlocks simultaneously.

2. twofold bicycle according to claim 1, it is characterized in that: but described front wheel frame is provided with the handgrip standpipe that can contact to earth in longitudinal extension and bottom, but the trailing wheel vehicle frame is provided with the base riser that can contact to earth in longitudinal extension and bottom, like this, after described front wheel frame and the gathering of trailing wheel vehicle frame folding, handgrip standpipe, base riser and front and back wheel constitute the feet of bicycle jointly, bicycle uprightly is fixed on the ground parks.

3. twofold bicycle according to claim 1, it is characterized in that: after described front wheel frame and trailing wheel vehicle frame folding draw in, front-wheel and trailing wheel are overlapped, connect to guarantee the parallel of front-wheel and trailing wheel by fixed mechanism between the front fork of trailing wheel vehicle frame and front wheel frame.

4. twofold bicycle according to claim 1, it is characterized in that: rope or the metal filament of described release link gear for passing via crossbeam inside, its two ends are connected on the release lever of preceding folding joint and back folding joint, and are in tight state all the time.