CN2477516Y

CN2477516Y - Retractive structure of mini bicycle

Info

Publication number: CN2477516Y
Application number: CN 01217904
Authority: CN
Inventors: 陈定兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-14
Filing date: 2001-03-14
Publication date: 2002-02-20
Anticipated expiration: 2011-03-14

Abstract

The utility model relates to a folding structure of a mini bicycle. The interior of a bicycle front pipe is penetrated with an axial rotation inner pipe of a handle bar standpipe, and is upwards and convexly extended with a pipe section. The pipe wall of the pipe section is provided with a profile channel and is sheathed with a pipe bundle. The lower part of a lower handle bar standpipe is bent with an insertion rod which penetrates through the axial rotation inner pipe. One end of the insertion rod is provided with a section head which is pivoted by an upper section and a lower section. The side surface of the section head is provided with a longitudinal slide slot, and the upper section and the lower section of the section head corresponding to the inner end are provided with a tenon and a groove. The upper end of the lower handle bar standpipe is sheathed with a pipe bundle. Thus, the upper section and the lower section of the handle bar standpipe are in telescopic fixing. The pipe bundle on the axial rotation inner pipe is loosened, the upper section of the section head of the lower handle bar standpipe is drawn out, and then a connected integration handle bar can be bent.

Description

The folding structure of mini bicycle

The utility model relates to a kind of mini bicycle, refers to the folding structure of mini bicycle especially.

At present, bicycle of a great variety, a kind of mini bicycle interesting and nature of leisure that integrates is wherein just arranged, the bicycle that the unitized frame of this mini bicycle is more general is little, small-sized wheel is equipped with simultaneously, therefore cause car body lower, and front and back vehicle frame length is also shorter, and because this mini bicycle is not to specialize in children's usefulness of playing, therefore it is different from general carriage for children, drive for ease of general teenager in when design, the vehicle frame of its shortening is still needed design in the specification that can be enough to drive for the adult, again based on the vehicle body step-down and shortening is arranged, and people's height unmodified situation, handlebar is tightly managed the height of lengthening with the lifting handle body, and handgrip is slightly extended forward, thereby drive this mini bicycle with the comfortable posture that meets ergonomics with the build that is fit to the adult., once after the body height of lengthening handlebar vertical tube lifting handle, though its unit body framework is shorter, the relevant pipe fitting at handgrip position is quite long, the utmost point accounts for storage space and inconvenience is carried.

The purpose of this utility model promptly is to provide a kind of folding structure of mini bicycle, and the scalable bending of its handgrip framework is folded together, so that collection is carried.

For reaching above-mentioned purpose, the technical scheme that the utility model adopted is as follows: a kind of folding structure of mini bicycle, wherein, pipe upwards protruded out a pipeline section in axle in the front bar changeed, the tube wall of this pipeline section is axially arranged with a profile groove, and the tube bank of noose one tool quick detach spanner, the ring body of this tube bank is provided with to stretch and places axle to change the pilot pin at the profile groove place of interior pipe;

The handlebar vertical tube is divided into, hypomere, hypomere handlebar vertical tube bottom connects an inserted link and is connected to pipe in the axle commentaries on classics, this inserted link is placed in the end of pipe in the axle commentaries on classics and establishes a section header, section header is articulated by epimere and hypomere and constitutes, on it, pipe profile groove direction formed together chute longitudinally in the sidepiece pipe face respective shaft of hypomere was changeed, and be provided with trip and groove in the epimere of section header or the inner relatively of hypomere, and the tube bank of the upper end noose one tool quick detach spanner of hypomere handlebar vertical tube, epimere handlebar vertical tube passes tube bank and is plugged in the hypomere handlebar vertical tube, and epimere handlebar riser upper portions is connected with the horizon bar section of handgrip body.

Upper and lower section flange and pivot seat that is respectively equipped with mutual plant of described section header, and establish a rivet cross-under pivot and connect the two, an and inner relatively appearance hole of establishing trip in that forms of the epimere of section header or hypomere, this trip is by a spring contact one steel ball and be dissolved in the volumetric cylinder and constitute, and the steel ball place of the corresponding trip of the flange of epimere is provided with groove.

The axial symmetrical side of the upper end of described hypomere handlebar vertical tube is respectively established a profile groove and a perforation, and a screw is established in tube bank this perforation place relatively, and establishes a gim peg spiral shell and tie the two.

The top of described epimere handlebar vertical tube the two ends of affixed handgrip body horizon bar section be provided with handle.

The top of described epimere handlebar vertical tube the two ends of affixed handgrip body horizon bar section bend forward and respectively be formed with a upward handle section of sticking up.

Tube bank on the described hypomere handlebar vertical tube is worn and is tied between the ring body open end of quick detach spanner, and the bearing pin of pivot connecting leg bundle and quick detach spanner also wears positioning piece, this locations supports piece towards end moulding one taper of sleeve pipe profile groove inner face, and the corresponding taper of epimere handlebar vertical tube forms together vertically chute to the piece place.

Owing to adopt said structure, after mini bicycle folding structure provided by the utility model applies to mini bicycle, can make flexible and its whole bent the folding of the relative hypomere handlebar of epimere handlebar vertical tube vertical tube segmentation, and make its bending articulated section move back and be hidden in the front bar, and cooperate the tube bank of tool quick detach spanner to be tightened fixing with the bending place in flexible end, can shorten the effect that the handlebar vertical tube folds the handgrip framework again thereby reach to cause, be beneficial to collection and carry the practicality height.

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

Fig. 1 is a three-dimensional exploded view of the present utility model;

Fig. 2 is the structural representation that the utility model is mounted on car body;

Fig. 3 is an assembled sectional view of the present utility model;

Fig. 4 is the scheme drawing that the utility model handgrip shortens state;

Fig. 5 is the diagram of work one that folds of the present utility model;

Fig. 6 is the diagram of work two that folds of the present utility model;

Fig. 7 is the overall schematic after the utility model folds;

Fig. 8 is the variation illustration intention of the utility model handgrip;

Fig. 9 is the structural representation of another example of the utility model;

Figure 10 is the assembled sectional view of another example of the utility model.

At first, see also shown in Fig. 1,2, the folding structure of mini bicycle described in the utility model is that the handlebar vertical tube with the handgrip framework is set as flexible and its whole bent form that folds of segmentation, and the structure design of its possible embodiments is:

Pipe 2 upwards protruded out a suitable long tube section in axle in the front bar 1 changeed, the tube wall of this pipeline section is axially arranged with a profile groove 21, and the tube bank 3 of pipe end noose one tool quick detach spanner 31, but and on the ring body of this tube bank 3, establish a screw 32 spiral shells and tie a pilot pin 33, these pilot pin 33 correspondences stretch place axle change in profile groove 21 places of pipe 2;

The handlebar vertical tube is divided into upper and lower section, the bottom bending end of its hypomere handlebar vertical tube 4 connects an inserted link 41 and can be connected in the interior pipe 2 of axle commentaries on classics, the end place that this inserted link 41 is dissolved in pipe 2 in the axle commentaries on classics establishes a section header 5, and section header 5 is articulated by epimere 51 (being the lower end body of rod of inserted link 41) and hypomere 52 and constitutes.Its upper and

lower section

51,52 is respectively equipped with mutual plant flange 511 and pivot seat 521, and even by a rivet 53 cross-under pivots, and pipe 2 profile grooves 21 were to forming recessed together vertical chute 512,522 in upper and

lower section

51,52 sidepiece pipe face respective shaft changeed, can stretch and be butted on this recessed vertical chute 512,522 places so that restrain 3 pilot pins 33 of wearing spiral shell, and make all to stretch under the section header 5 hypomeres 52 local normalities and place axle to fasten the location in the pipe 2 in changeing.Again, one inner relatively (be hypomere 52 shown in the figure) of the epimere 51 of section header 5 or hypomere 52 forms an appearance hole 523, hold in the hole 523 and establish a trip 54, this trip 54 is by spring 541 contacts, one steel ball 542 and be dissolved in that institute constitutes (cooperation Fig. 3) in the volumetric cylinder 543, and the steel ball 542 of 511 corresponding trips 54 of flange of epimere 51 is provided with groove 513; In addition, the top axial of hypomere handlebar vertical tube 4 symmetry side is respectively established a profile groove 42 and a perforation 43, and the tube bank 6 of another tool quick detach spanner 61 of noose, and a screw 62 is established in the perforation 43 of these tube bank 6 relative hypomere handlebar vertical tubes 4 and spiral shell is tied a gim peg 63.Epimere handlebar vertical tube 7 passes tube bank 6 and is plugged in the hypomere handlebar vertical tube 4, and again, the top of epimere handlebar vertical tube 7 is the horizon bar section that is fixed in handgrip body 8, and horizon bar section two ends are provided with handle 81.

By said structure when implement using, as shown in Figure 3, the tube bank 3 of the pipe 2 pipeline section noose tool quick detach spanners 31 that upwards protrude out in axle changes, and with hypomere handlebar vertical tube 4 bottom bonded assembly inserted links 41 and section header 5 hold to go into axle change in pipe 2, pilot pin 33 spiral shells that to restrain again on 3 advance to stretch to place in the profile groove 21 and then support to terminate on the section header 5,

hypomere

51,52 recessed chute 512,522, in stays to limit hypomere handlebar vertical tube 4 pipe 2 in inserted link 41 relative axles change, be beneficial to smooth and easy flexible slippage, and can vertically borrow the steel ball 541 of trip 54 to be stuck in location, groove 513 places with hypomere 52 epimere 51 of section header 5, pressure stretch pipe in the pipe 2 in axle changes is hidden again, and the pilot pin 33 embedding cunnings of utilizing tube bank 3 are supported in chute 512 places of epimere 51, and only group is solid, borrow the quick detach spanner 31 of tube bank 3 make its tighten axle change in pipe 2 and inserted link 41 packings of hypomere handlebar vertical tube 4 locking relatively, form the latent axle that places front bar 1 of a joint structure change in the pipe 2.

When desiring to fold this handgrip framework, the quick detach spanner 61 of hypomere handlebar vertical tube 4 upper ends tube bank 6 can be pulled open and loosen, then being plugged in epimere handlebar vertical tubes 7 in the hypomere handlebar vertical tube 4 just can contract and put in the pipe, reduce its length, this measure just can be carried out suitable flexible adjustment, makes the handle 81 of handgrip body 8 be positioned at the height that suitable rider holds; The quick detach spanner 31 of managing in the axle of loosening again changes on 2 makes 2 section headers 5 that can unclasp hypomere handlebar vertical tube 4 inserted links 41 of pipe in the commentaries on classics of the no longer tight bundle axle of tube bank 3, shown in Fig. 5,6, pipe 2 rotations were towards a side in handgrip changeed with axle, this inserted link 41 can draw high section header 5 makes epimere 51 partly stretch the upper end that shaft changes interior pipe 2, the most of handgrip body bending receipts that comprise hypomere handlebar vertical tube 4, epimere handlebar vertical tube 7 and handgrip body 8 more than making herein are against vehicle frame central authorities, as shown in Figure 7, thereby the reduction volume is placed easily or is carried with less car body form in order to it; Again, when pulling out inserted link 41 when being stretched to the limit, 33 of the pilot pins of this tube bank 3 are butted on the groove end of the chute 522 of section header 5 hypomeres 52, make that inserted link 41 is unlikely to be drawn out disengaging.

Again, in the above-mentioned example top of epimere handlebar vertical tube 7 affixed handgrip body 8 also can be changed with handle 81, as shown in Figure 8, make affixed handgrip body 8 horizon bar section two ends, epimere handlebar vertical tube 7 straight lengths upper end be bent to form a handgrip than the handle section 82 formation one ox horn moulding of lacking and can slightly upwardly stick up again forward.

In addition, in the design that epimere handlebar vertical tube 7 relative hypomere handlebar vertical tubes 4 stretch, also can design one and limit the structure that epimere handlebar vertical tube 7 can't rotate, to keep the flexible up and down of epimere handlebar vertical tube 7 orientations, as Fig. 9, shown in 10, tube bank 6 on this hypomere handlebar vertical tube 4 is worn and tied between the ring body open end of quick detach spanner 61 is to form by wearing positioning piece 65 with its pivot bearing pin 64 even, its locations 65 supports piece 651 towards profile groove 42 inner face end moulding one taper of hypomere handlebar vertical tube 4, the taper of then corresponding locations 65 is supported piece 651 and is formed together vertically chute 71 on the epimere handlebar vertical tube 7, make epimere handlebar vertical tube 7 can borrow chute 71 and taper to support piece 651 and offset, thereby limit in stays and take into account the smoothness of flexible slippage.

Claims

1, a kind of folding structure of mini bicycle, it is characterized in that: pipe upwards protruded out a pipeline section in the axle in the front bar changeed, the tube wall of this pipeline section is axially arranged with a profile groove, and the tube bank of noose one tool quick detach spanner, and the ring body of this tube bank is provided with to stretch and places axle to change the pilot pin at the profile groove place of interior pipe;

2, the folding structure of mini bicycle as claimed in claim 1, it is characterized in that: upper and lower section flange and pivot seat that is respectively equipped with mutual plant of described section header, and establish a rivet cross-under pivot and connect the two, an and inner relatively appearance hole of establishing trip in that forms of the epimere of section header or hypomere, this trip is by a spring contact one steel ball and be dissolved in the volumetric cylinder and constitute, and the steel ball place of the corresponding trip of the flange of epimere is provided with groove.

3, the folding structure of mini bicycle as claimed in claim 1 is characterized in that: the axial symmetrical side of the upper end of described hypomere handlebar vertical tube is respectively established a profile groove and a perforation, and a screw is established in tube bank this perforation place relatively, and establishes a gim peg spiral shell and tie the two.

4, the folding structure of mini bicycle as claimed in claim 1 is characterized in that: the top of described epimere handlebar vertical tube the two ends of affixed handgrip body horizon bar section be provided with handle.

5, the folding structure of mini bicycle as claimed in claim 1 is characterized in that: the top of described epimere handlebar vertical tube the two ends of affixed handgrip body horizon bar section bend forward and respectively be formed with a upward handle section of sticking up.

6, the folding structure of mini bicycle as claimed in claim 1, it is characterized in that: the tube bank on the described hypomere handlebar vertical tube is worn and is tied between the ring body open end of quick detach spanner, and the bearing pin of pivot connecting leg bundle and quick detach spanner also wears positioning piece, this locations supports piece towards end moulding one taper of sleeve pipe profile groove inner face, and the corresponding taper of epimere handlebar vertical tube forms together vertically chute to the piece place.