CN201784765U

CN201784765U - Longitudinal folding bicycle

Info

Publication number: CN201784765U
Application number: CN2010205150835U
Authority: CN
Inventors: 郑汉信; 韩德玮
Original assignee: Dahon Technologies Ltd
Current assignee: DAHON INTELLIGENCE PROPERTY CO., LTD.
Priority date: 2010-08-27
Filing date: 2010-08-27
Publication date: 2011-04-06
Anticipated expiration: 2020-08-27

Abstract

The utility model discloses a longitudinal folding bicycle, wherein a front arm and a middle arm are hinged, the middle arm is fixed on a middle pipe, a rear fork is hinged on the middle pipe or the middle arm, a seat pipe which can slide relatively is arranged in a middle pipe inner sleeve, the lower end of the seat pipe is provided with a connecting rod seat, the two ends of a front connecting rod are respectively connected on the front arm and the connecting rod seat through universal bearings, and two ends of a rear connecting rod are respectively hinged on the rear fork and the connecting rod seat. By the aid of the structure, the seat pip can not swing left and right transversely and is steadier. Sliding sleeves are arranged in the upper and the lower ends of the middle pipe, so that friction force between the pipe seat and the middle pipe is smaller when the bicycle is unfolded and folded, and the bicycle can be folded and unfolded more smoothly. A lockable upper dust-proof sleeve and a lower dust-proof sleeve are respectively arranged at two ends of the middle pipe, thereby preventing dust and sands from entering the pipe.

Description

Longitudinal folding bicycle

Technical field

The utility model relates to bicycle, particularly a kind of vertically fast folding bicycle.

Background technology

Now, the energy total amount in the whole world reduces day by day, the oil price promotion, and the public more and more favors in the vehicle green, environmental protection.Bicycle stands in the breach, green, environmental protection, can also body-building.Folding bicycle is very popular, and the folding bicycle of many patterns has been arranged on the market.

For example the inventor has showed a kind of scheme drawing of longitudinal folding bicycle at the disclosed Chinese patent of CN200320131888.X on November 17 " quick-folding bicycle " in 2004.Shown in its figure one, this utility model comprises forearm 1, middle arm 2, postbrachium 3, forearm 1 is hinged with articulated joint 12 of middle arm 2 usefulness, middle arm 2 is hinged with another articulated joint 13 of postbrachium 3 usefulness, seat support link 5 lower ends are connected with Hooke's coupling 9 respectively with connecting rod 8 with connecting rod 7, connecting rod 8 is connected with postbrachium 3 usefulness Hooke's couplings 11, and connecting rod 7 is connected with forearm 1 usefulness Hooke's coupling 10; Seat support link 5 is plugged in the conduit 4, and it can be slided in conduit 4, and conduit 4 is installed on the middle arm 2, but they have constituted the pentagon of a grade separation distortion, and the front of conduit 4 is provided with axis 14.Because the two ends of two connecting rods all adopt Hooke's coupling to be connected with adjacent component, the seat pipe has the problem of horizontal double swerve, seems insecure, causes having certain risk in riding.

The utility model content

The utility model aims to provide a kind of longitudinal folding bicycle, and folding quick, structure is firm, is easy to make.

The utility model is achieved in that longitudinal folding bicycle, forearm and middle arm are hinged, middle arm is fixed in middle pipe, pipe or middle arm during back vent is articulated in, but the seat pipe of sheathed slide relative in the middle pipe, seat pipe lower end is provided with connecting rod base, and the front rod two ends are connected to forearm and connecting rod base by universal bearing, and the rear linking rod two ends are articulated in back vent and connecting rod base respectively.

The hinge axis of described forearm and middle arm and the projection of hind axle axis in horizontal surface have certain angle, and described angle is the 5-12 degree.

Pipe is provided with sliding sleeve in the two ends up and down in described, and described sliding sleeve is located between middle pipe and the seat pipe.

The pipe upper and lower side is equipped with dust protecting cap in described, and described dust protecting cap has step.

Connecting rod base is a bunching ring with breach, and described connecting rod base has two lugs, has opening between described two lugs, and two lugs are provided with the through hole that runs through, and is provided with screw or through hole at the relative opposite side of described two lugs of connecting rod base.

The seat pipe lower end connecting rod base structure of the longitudinal folding bicycle of the utility model, the horizontal double swerve of feasible seat Guan Buhui is more firm.Pipe up and down is provided with sliding sleeve in the two ends in described, and bicycle is being launched or when folding, the friction force between the seat Guan Yuzhong pipe is littler, more smooth and easy.The two ends of middle pipe are provided with can lock dust protecting cap and following dust protecting cap, prevents that dirt sand from entering in the middle pipe.Described folder hinge axis and the hind axle axis projection angle in horizontal surface is the 5-12 degree, makes front and back wheel can stagger when folding, can guarantee that again folding back transverse width is less.

Description of drawings

Fig. 1 is the longitudinal folding bicycle exploded view of the utility model;

Fig. 2 is the longitudinal folding bicycle assembling of a utility model scheme drawing;

Fig. 3 is the longitudinal folding bicycle folding intermediateness of a utility model scheme drawing;

Fig. 4 is the longitudinal folding bicycle connecting rod base of a utility model scheme drawing;

Fig. 5 is the longitudinal folding bicycle hinge of a utility model angular relationship scheme drawing.

The specific embodiment

Below in conjunction with accompanying drawing the longitudinal folding bicycle of the utility model is described in further details.

As Fig. 1-3, this longitudinal folding bicycle has a front-wheel, and a front fork, a folding handle bar, vehicle frame include arm 2, one back vents 4, one trailing wheels in the forearm 1,, manages 5, one bars of 3, one pipes, 6, one front rods, 7, one rear linking rods 8 in one to form.

Between this forearm 1 and the middle arm 2 folder is set, this folder comprises first connecting panel and second connecting panel, is articulated and connected by hinge 9 between described first connecting panel and second connecting panel.Middle pipe is hinged by hinge 11 with back vent 4, and lock with screw at hinge 11 two ends.These pipe 5 lower ends stretch out in pipe 3 lower ends in this, and seat pipe 5 lower ends are installed with a connecting rod base 12, and connecting rod base 12 is connected with front rod 7 usefulness universal bearings 16, and this universal bearing 16 has through hole, and the through hole of this through hole and connecting rod base 12 is by nut, bolted splice.

Connecting rod base 12 is hinged with the screw 121 that rear linking rod 8 usefulness one bolt passes rear linking rod 8 end through holes, connecting rod base 12; Rear linking rod 8 and another bolted splice of back vent 4; Described front rod 7 is hinged by hinge 10 with forearm 1 usefulness universal bearing 17.In the pipe 3, seat pipe 5 can axially slide in middle pipe 3 during described seat pipe 5 was plugged in, and pipe 3 is fixedly set on middle arm 2 in this; But this forearm 1, middle arm 2, back vent 4, front rod 7, the rear linking rod 8 common pentagons that constitute a grade separation distortion.

As Fig. 4, these pipe 5 lower ends stretch out in pipe 3 lower ends in this, seat pipe 5 lower ends are installed with a connecting rod base 12, this connecting rod base 12 has the beam ring of two lugs 122, has opening between described two lugs 122, two lugs 122 are provided with the through hole 123 that runs through, and are provided with screw 121 at the relative opposite side of described two lugs of connecting rod base, and perhaps through hole also can.

Should in be provided with sliding sleeve 13 between pipe 3 two ends and the seat pipe 5, for example present pipe 5 a upper ends and lower end sheathed sliding sleeve respectively in its pipe, folding when launching bicycle to guarantee, middle pipe 3 and seat are managed the smooth and easy of 5 slide relative.

In the external diameter of pipe 3 two ends, seat pipe 5 be provided with and can lock dust protecting cap 18 and following dust protecting cap 14, prevent dirt sand enter in the pipe, with pipe 3 in guaranteeing with manage 5 slide relative smooth and easy in use.For example, following dust protecting cap 14 is sheathed on seat pipe 5 tail end peripheries, and this time dust protecting cap 14 downsides have the step 141 that inwardly turns over.

The seat pipe is provided with supporting pad 15 bottom, and when making bicycle be in folded state, seat cushion 15 directly supports ground, prevents the wearing and tearing of a tube end.Supporting pad 15 has step 151, makes take a seat pipe but can not be absorbed in the seat pipe of seat cushion 15 cover.

Described hinged folder is the lateral inclination joint, and it comprises outer box, inner box and end cap, and outer box is installed on the arm, and inner box is installed on another arm, and inner box is located in a bolt with outer box.End cap simultaneously padlock is lived an end of inner box and outer box.

During use, pipe 3 in lifting can realize that just the receipts of bicycle are folded, puts lower intermediate tube and just is deployed to running condition, and is very convenient.

As Fig. 5, axis I is bicycle fore-and-aft direction axis, i.e. longitudinal axis, hind axle 19 axis normal are in axis I, and folder hinge 9 axis are not orthogonal to axis I, and folder hinge 9 axis and hind axle 19 axis form an angle, so that when bicycle is longitudinal folding, front and rear wheel can stagger.Through actual verification and improvement repeatedly, folder hinge 9 axis and hind axle 19 axis are preferred embodiment at the angle of horizontal surface inner projection for the 5-12 degree.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. longitudinal folding bicycle, forearm (1) is hinged with middle arm (2), middle arm is fixed in middle pipe (3), pipe or middle arm during back vent (4) is articulated in, but the seat pipe (5) of sheathed slide relative in the middle pipe, seat pipe lower end is provided with connecting rod base (12), and it is characterized in that: front rod (7) two ends are connected to forearm and connecting rod base by universal bearing, and rear linking rod (8) two ends are articulated in back vent and connecting rod base respectively.

2. longitudinal folding bicycle according to claim 1 is characterized in that: the hinge of described forearm and middle arm (9) axis and the projection of hind axle (19) axis in horizontal surface have certain angle, and described angle is the 5-12 degree.

3. longitudinal folding bicycle according to claim 1 and 2 is characterized in that: pipe is provided with sliding sleeve (13) in the two ends up and down in described, and described sliding sleeve is located between middle pipe and the seat pipe.

4. longitudinal folding bicycle according to claim 3 is characterized in that: the pipe upper and lower side is equipped with dust protecting cap in described, and described dust protecting cap has step.

5. longitudinal folding bicycle according to claim 1 and 2 is characterized in that: described seat pipe is provided with supporting pad (15) bottom.

6. longitudinal folding bicycle according to claim 1 and 2 is characterized in that: described connecting rod base is a bunching ring with breach.

7. longitudinal folding bicycle according to claim 6, it is characterized in that: described connecting rod base has two lugs, have opening between described two lugs, two lugs are provided with the through hole that runs through, and are provided with screw or through hole at the relative opposite side of described two lugs of connecting rod base.