CN2776824Y

CN2776824Y - Handle bar vertical pipe folding mechanism of small wheel bicycle

Info

Publication number: CN2776824Y
Application number: CN 200520053782
Authority: CN
Inventors: 廖学湖
Original assignee: HL CORP (SHEN ZHEN)
Current assignee: HL CORP (SHEN ZHEN)
Priority date: 2005-01-12
Filing date: 2005-01-12
Publication date: 2006-05-03
Anticipated expiration: 2015-01-12

Abstract

The utility model relates to a handlebar vertical pipe folding mechanism of a small wheel bicycle which mainly comprises a handlebar pipe, a handlebar fixing head, a handlebar vertical pipe, a folding device, an extending structure and a bicycle body structure. The upper end of the handlebar vertical pipe is provided with the handlebar fixing head, and the handlebar pipe passes through the handlebar fixing head and is fixedly locked on the handlebar fixing head. The proper position of the handlebar vertical pipe is provided with the folding device and is additionally provided with an extending structure. The extending structure is designed into a bent shape, one end is fixedly connected with the folding device and the other end is fixedly connected with the handlebar vertical pipe. The bicycle body structure is provided with a positioning buckle which can fix the handlebar vertical pipe. The utility model is additionally provided with the extending structure to enable the handlebar pipe and the handlebar vertical pipe after folding operation to be arranged on the side surface of the bicycle body, and bicycle body height is lowered. Meanwhile, a bicycle front wheel is rotated to the angle vertical to the bicycle body and bicycle body length is reduced. In addition, the positioning buckle can fix the handle vertical pipe after the folding operation for portability.

Description

The stem fold mechanism of small-wheel bicycle

Technical field

The utility model relates to a kind of fold mechanism of bicycle, relates in particular to a kind of stem fold mechanism of small-wheel bicycle.

Background technology

The bicycle handle standpipe fold mechanism of prior art as depicted in figs. 1 and 2, a kind of known bicycle folding stem 1, its keystone configuration comprises handle fixed head 12, stem, folder 10, oblique fixture block 123 and overbolt 125, folder 10 is made of with following foldable structure 102 last foldable structure 101, one end is articulated with rotating shaft bolt 103 mutually and closes, the other end screws embedded fixture block 104 with turn-knob bolt 105 and pushes mutual embedding combination, stem is made of epimere stem 121 and hypomere stem 122, the affixed epimere stem 121 of last foldable structure 101 upper central, epimere stem 121 upper ends set firmly handle fixed head 12, with mounting knob pipe 11, central affixed hypomere stem 122 below the following foldable structure 102, hypomere stem 122 lower ends are the inclined-plane, cooperate an overbolt 125 to be upward through and be screwed into the combination with it of oblique fixture block 123, insert in standpipe of front fork 141 centre holes 142 of body structure 15 vehicle head tubes 151, screw overbolt 125 to oblique fixture block 123 and prolong the inclined-plane skew effect that makes progress, be fixed in the centre hole 142, so reached handle tube 11 in conjunction with last, hypomere stem (121,122) be fixed in standpipe of front fork 141 on the car front fork 14, be hubbed at simultaneously in body structure 15 vehicle head tubes 151, the user holds handle tube 11 just can control turning of bicycle, when user's desire folds its bicycle, loosen turn-knob bolt 105 to back out embedded fixture block 104, handle tube 11 just can reach the purpose that reduces bodywork height along with epimere stem 121 and last foldable structure 101 are rotating shaft bending backward downwards with rotating shaft bolt 103.

The defective of prior art is: though this folding handles standpipe structure has reduced bodywork height, but can not reduce length over ends of body, in this external small-wheel bicycle, the shared horizontal space of folding back handle tube 11 is excessive, also make folding effect very inharmonious, make and pack and carry all very inconvenience.

The utility model content

The purpose of this utility model is: by using new design concept, improve on the basis of existing technology, overcome the defective of prior art, realized both can reducing bodywork height, also can reduce length over ends of body and also can not increase goals of the invention such as horizontal space after folding.

For achieving the above object, the utility model adopts following technical scheme: a kind of stem fold mechanism of small-wheel bicycle, mainly comprise handle tube, handle fixed head, stem, folder, extended structure and body structure, the stem upper end is provided with the handle fixed head, handle tube wears and is locked on the handle fixed head, the stem appropriate location is provided with folder and has additional extended structure, extended structure is made as curved shape, one end captive joint folder, other end captive joint stem.

Described body structure is provided with locating button, but the stem after the fixed fold.

Described locating button can be a C shape Plastic fastener.

The beneficial effects of the utility model are, by on stem, having additional extended structure, make after folding stem can with the vehicle body dystopy, and handle tube can be and vertically is positioned over vehicle body side, reduced height of the carbody, the car front-wheel also rotates to and the vehicle body vertical angle simultaneously, reduced length over ends of body, in addition because in small-wheel bicycle, wheel diameter is less than the handle tube width, increases the wheel width and eliminates the handle tube width, can not increase the horizontal space after folding on the whole, but and the stem after establishing the locating button fixed fold on the body structure, be easy to carry.

Description of drawings

Fig. 1 is the prior art constructions decomposing schematic representation;

Fig. 2 is the folding scheme drawing of prior art;

Fig. 3 is a structural upright scheme drawing of the present utility model;

Fig. 4 is a structure partial decomposing schematic representation of the present utility model;

Fig. 5 is the scheme drawing of the folded state one of first kind of embodiment of the present utility model;

Fig. 6 is the scheme drawing of the folded state two of first kind of embodiment of the present utility model;

Fig. 7 is the scheme drawing of the folded state three of first kind of embodiment of the present utility model;

Fig. 8 is second kind of embodiment scheme drawing of the present utility model;

Fig. 9 A, Fig. 9 B are multiple extended structure scheme drawing of the present utility model;

Figure 10 is the third embodiment scheme drawing of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail:

As shown in Figure 3 and Figure 4, a kind of stem fold mechanism 2 of small-wheel bicycle, mainly comprise handle tube 11, handle fixed head 12, stem (121,122), folder 10, extended structure 20 and body structure 15, stem (121,122) upper end is provided with handle fixed head 12, handle tube 11 wears and is locked on the handle fixed head 12, stem (121,122) appropriate location is provided with folder 10 and has additional extended structure 20, extended structure 20 is made as curved shape, one end captive joint folder 10, other end captive joint stem (121,122).

Wherein, folder 10 is made of with following foldable structure 102 last foldable structure 101, one end is articulated with rotating shaft bolt 103 mutually and closes, the other end screws embedded fixture block 104 with turn-knob bolt 105 and pushes mutual embedding combination, stem is made of epimere stem 121 and hypomere stem 122, last foldable structure 101 engages with epimere stem 121 bottoms, one end, 21 Joints of following foldable structure 102 and extended structure 20, the other end 22 of extended structure 20 and the upper end Joint of hypomere stem 122, overbolt 125 passes the bolt penetration hole 23 on the extended structure 20 from top to bottom in turn, hypomere stem 122, be screwed into oblique fixture block 123 again, handle fixed head 12 is for mounting knob pipe 11, centre hole 142 internal fixation that oblique fixture block 123 and hypomere stem 122 insert on the car front forks 14, standpipe of front fork 141 is hubbed in the vehicle head tube 151 simultaneously, like this, the user holds top handle tube 11 and just can control below front-wheel 16 turning action of advancing.

As Fig. 5, Fig. 6 and Fig. 7 and in conjunction with illustrated in figures 1 and 2, when user's desire is implemented the folding operation action, open folder 10, the turn-knob bolt 105 of promptly outwarding winding is backed out embedded fixture block 104, just can be to side switching epimere stem 121 and handle tube 11, reaching handle tube 11 centerline directions is changed into by former left and right directions and is above-below direction, utilize the pivot joint relation of the vehicle head tube 151 on standpipe of front fork 141 and the body structure 15 on the front fork 14 again, can rotate epimere handle tube 121 position almost parallel backward and be positioned at its side to epimere handle tube 121 centerline directions and body structure 15 centers, on the corresponding appropriate location on the body structure 15, be installed with a locating button 18, it can be C shape spring leaf or plastic clip etc., behind switching epimere stem 121 and the handle tube 11, epimere stem 121 is pressed into locating button 18 to be maintained static, during installation, only need in locating button 18, to pull out epimere stem 121, upwards switching screws folder 10 again and just can to uprightly being the position that handle tube 11 line of centerss are left and right directions originally.

Fig. 8 is an another kind of embodiment of the present utility model, the end of extended structure 20A and following foldable structure Joint among this embodiment, and the other end is made as folder mouth structure 24, standpipe of front fork 141A on the front fork 14 directly is locked, be tightened by attachment screw 241, nut 242, this mode is used in standpipe of front fork 141A and raises up than long bicycle vehicle again.

For another example shown in Fig. 9 A and Fig. 9 B, extended structure (20B, 20C) during this is novel, can be according to the demand of various vehicles and different jackknife actions, suitably cooperate the profile of revising extended structure (20B, 20C), higher as among Fig. 9 A the position of 21A above the front end of extended structure 20B being provided with, and intercourse the front and back ends of another extended structure 20C (21B, 22B) position among Fig. 9 B.

Figure 10 is the third embodiment of the present utility model, extended structure 20D one end 21 is directly fixed on epimere stem 121 lower ends among this embodiment, and the other end is captiveed joint with the upper end of folder 10, and promptly folder 10 is fixedly arranged between extended structure 20D and the hypomere stem 122.

In sum, the utility model is by setting up extended structure and locating button on prior art, realized both can reducing bodywork height, also can reduce length over ends of body and also can not increase goals of the invention such as horizontal space after folding.

Claims

1, a kind of stem fold mechanism of small-wheel bicycle, mainly comprise handle tube, handle fixed head, stem, folder, extended structure and body structure, it is characterized in that: the stem upper end is provided with the handle fixed head, handle tube wears and is locked on the handle fixed head, the stem appropriate location is provided with folder and has additional extended structure, extended structure is made as curved shape, one end captive joint folder, other end captive joint stem.

2, the stem fold mechanism of small-wheel bicycle according to claim 1, it is characterized in that: described body structure is provided with locating button, but the stem after the fixed fold.

3, the stem fold mechanism of small-wheel bicycle according to claim 2 is characterized in that: described locating button can be a C shape Plastic fastener.