CN2506524Y

CN2506524Y - Folding device for bicycle

Info

Publication number: CN2506524Y
Application number: CN 01262472
Authority: CN
Inventors: 陈定兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-27
Filing date: 2001-08-27
Publication date: 2002-08-21
Anticipated expiration: 2011-08-27

Abstract

The utility model discloses a folding device for bicycle, which comprises components of a sleeve casing, an inner tube, an outer tube and a fastening seat etc. The sleeve casing is divided into a first sleeve casing and a second sleeve casing. A convex wall is arranged at the adjacent end of the two sleeve casings. Pivoting points which can be mutually bended is formed by pivotally connecting the two convex walls; wherein, the inner tube and a sliding slot are arranged inside the first sleeve casing. A push rod that passes through the outer tube along radial direction is inserted and extended into the sliding slot and fixedly linked with the inner tube. The second sleeve casing is provided with a fastening seat. The fastening seat is provided with a fastening ring. A shaft of the inner tube is driven by pushing and moving of the push rod inside the sliding slot as well as protrudes and extends between the first sleeve casing and the second sleeve casing. The first sleeve casing and the second sleeve casing are positioned by the inserted extension of the inner tube. The push rod that is sleeved by and against a fastening ring sleeve can not move inside the sliding slot, and the inner tube is further positioned between the first sleeve casing and the second sleeve casing and the effect of dual position is achieved. The folding device for bicycle has simplified structure, the effect of dual positioning and excellent structural strength.

Description

The bicycle folding device

Technical field

The utility model relates to a kind of bicycle folding device.

Background technology

Bicycle folding device of the prior art, mainly be on bicycle transverse tube and car vertical tube, to be respectively equipped with folding unit, utilize folding unit to form an inflection point, thereby front vehicle frame and the mutual doubling of back vehicle frame are folded, yet, the structure of the folding unit of this Folding Bicycle mainly is that two adjacent bodys articulate mutually in joint one side on the vehicle frame, form a pivoting point that can bend mutually, and two bodys engage adjacent be provided with respectively protrusion on, following button portion, one body end moulding set collar, when supporting, cooperate a matrix lock dog with two bodys up and down button portion detain mutually to, the relative lock dog of fixed knob stretches through and is locked together in body in-to-in set collar, two bodys is joined support; Otherwise when folding, fixed knob being loosened be snapped away from lock dog, two bodys is that fulcrum bends mutually and folds once again with the articulated section.This bicycle folding device is to support between adjacent two bodys button portion up and down by the lock dog button, only depends on this folding unit to link between the two, and structural strength is obviously not enough, in case slightly get loose, the vehicle frame accident is folded, and it is dangerous to drive a vehicle; In addition, this structure only is to be buckled in two bodys button portion up and down by an independent lock dog, when vehicle frame folding, must separate lock dog, yet this lock dog and fixed knob all are free-standing member, even folding the back fixed knob is through lock dog on the set collar, also too relax together to lose together with lock dog because of fixed knob easily and drop, in case lose wherein a kind of member, this kind vehicle frame just performs practically no function.

Summary of the invention

The purpose of this utility model is to provide a kind of bicycle folding device, during in order to the driving of assurance bicycle, articulates the intensity and the safety at position, solves the problem that locations easily breaks away from bicycle body simultaneously.

For achieving the above object, solution of the present utility model is:

The bicycle folding device mainly comprises members such as sleeve pipe, interior pipe, outer tube and Button Block; Sleeve pipe is divided into first sleeve pipe and second sleeve pipe, be provided with protruding wall at first sleeve pipe and the second sleeve pipe abutting end, two protruding walls articulate and form the pivoting point that can bend mutually, wherein, the first sleeve pipe periphery is offered a chute, pipe in axially built-in, a push rod radially run through outer tube and stretch through in chute and the fixed interlock of interior pipe.

Described bicycle folding device, second sleeve pipe is provided with a Button Block, and this Button Block is provided with a clasp that is subjected to its control in addition towards the first sleeve pipe direction.

Described bicycle folding device, the first sleeve pipe periphery is provided with an outer tube.

After adopting said structure, push rod in chute, passes the interior tubular axis that drives in first sleeve pipe to protruding out between first sleeve pipe and second sleeve pipe, make win sleeve pipe with manage to deciding and can't bending relatively in second sleeve pipe is subjected to; Make the clasp cover of Button Block push bar again and make it can't slippage in chute, and then pipe be positioned between first sleeve pipe and second sleeve pipe in making, and reaches dual location.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an assembled sectional view of the present utility model;

Fig. 3 is a dismounting illustrative view of the present utility model;

Fig. 4 is the illustrative view that folds of the present utility model.

The specific embodiment

See also shown in Figure 1ly, the utility model mainly is provided with one group of folding device on cycle frame 1 connects the cross bar of forward and backward vehicle frame, and this folding device mainly comprises members such as sleeve pipe 2, interior pipe 3, outer tube 4 and Button Block 5.

Sleeve pipe 2 is divided into first sleeve pipe 21 and second sleeve pipe 22, the adjacent end portion of first sleeve pipe 21 and second sleeve pipe 22 is respectively equipped with protruding wall 211,221, protruding wall 211,221 one-sided pivot joints form pivoting point, with this pivoting point is that the center bends mutually, wherein, first sleeve pipe, 21 peripheries offer a chute 212 that is matrix, chute 212 usefulness one suitable long outer tube 4 covers to be avoided exposing outside, cooperate shown in Figure 2, pipe 3, one push rods 41 radially ran through outer tube 4 and are extended through in the chute 212 and interior pipe 3 mutual fixed interlocks in first sleeve pipe 21 was axially established; Second sleeve pipe 22 is provided with a Button Block 5 with respect to first sleeve pipe, 21 outer peripheral edges, and Button Block 5 is provided with one in addition towards first sleeve pipe, 21 directions and is subjected to its control and mobilizable clasp 51;

When supporting, push rod 41 is passed in chute 212 towards second sleeve pipe, 22 directions, and then drive that interior pipes 3 in first sleeve pipe 21 axially protrude out and between first sleeve pipe 21 and second sleeve pipe 22, the sleeve pipe 21 of winning can't be bent owing to pipe in being subjected to 3 supports surely relatively with second sleeve pipe 22, and then reach the first road positioning function, make clasp 51 covers of Button Block 5 push bar 41 again, being wrenched Button Block 5 can't break away from its location in chute 212, pipe 3 is positioned between first sleeve pipe 21 and second sleeve pipe 22 fully in making, and reaches the second road locating effect.

When folding, shown in figure 2,3, pull from Button Block 5 and make the disengaging of loosening of clasp 51 relative push rods 41, push rod 41 carries over chute 212 and drives outer tubes 4 and pass another groove end to chute 212, and interior pipe 3 contracts and moves in first sleeve pipe 21, no longer stretches to be butted between first sleeve pipe 21 and second sleeve pipe 22, make first sleeve pipe 21 and the 22 relative bendings of second sleeve pipe, cooperate shown in Figure 4ly, vehicle frame 1 is an inflection point with the placement of this folding device, and forebody is superimposed with latter half of relative bending.

What deserves to be explained is that first sleeve pipe 21 of the present utility model and second sleeve pipe 22 also can substitute with difform bodys such as ellipse, square tube or polygon pipes and implement except that utilizing the round tube, its positioning function at all can not be affected; And folding device of the present utility model not only can be used on the cross bar of vehicle frame 1, also can be arranged on the handlebar montant, makes the handlebar montant be made as the two-period form body, and at two-period form body adjacent one group of folding device is set, to fold the handlebar montant.

Claims

1, a kind of bicycle folding device, comprise members such as sleeve pipe, interior pipe and push rod, sleeve pipe is divided into first sleeve pipe and second sleeve pipe, two sleeve pipe abutting ends are provided with protruding wall, two protruding walls articulate the formation pivoting point mutually, it is characterized in that: first quill drive is managed in built-in, and periphery is offered chute, and a push rod radially is extended through in the chute and the fixed interlock of interior pipe.

2, bicycle folding device as claimed in claim 1 is characterized in that: the second sleeve pipe periphery is provided with Button Block, and this Button Block is provided with the clasp that is subjected to its control in addition towards the direction of first sleeve pipe.

3, bicycle folding device as claimed in claim 1 is characterized in that: the first sleeve pipe periphery cooperates a sheathed outer tube.