CN102700665B

CN102700665B - Folding bicycle

Info

Publication number: CN102700665B
Application number: CN201210179571.7A
Authority: CN
Inventors: 郑牧之
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-04
Filing date: 2012-06-04
Publication date: 2014-09-24
Anticipated expiration: 2032-06-04
Also published as: CN102700665A

Abstract

The invention relates to a folding bicycle, comprising a bicycle frame, a handlebar arranged at the front upper part of the bicycle frame, and a saddle arranged at the rear lower part of the bicycle frame. The folding bicycle is characterized in that a handlebar stem capable of rotating back and forth relative to the bicycle frame is arranged at the front end of the bicycle frame, a front and a rear saddle posts capable of rotating back and forth relative to the bicycle frame are arranged at the rear end of the bicycle frame, the front and rear ends of the saddle are respectively hinged with the upper ends of the front and rear saddle posts, the upper end of the handlebar stem is hinged with the front end of a first connecting rod, the rear end of a second connecting rod is connected with the lower end of the rear saddle post and rotates synchronously therewith, and the rear end of the first connecting rod is hinged with the front end of the second connecting rod. Compared with the prior art, the folding bicycle has the advantages that the handlebar and the saddle can be folded synchronously, so the folding is convenient; with the bicycle frame consisting of a first and a second bicycle frames, the integral structure of the bicycle is firm, and all parts are located between the first and second bicycle frames after the bicycle is folded, thereby causing the external structure of the bicycle to be simple.

Description

Folding bicycle

Technical field

The present invention relates to a kind of bicycle, specifically refer to a kind of Foldable bicycle.

Background technology

Folding bicycle general structure is all comparatively compact, and volume after folding is less, is very suitable for people and goes out to carry.It is folding that existing most of folding bicycle is all that the midperpendicalar along vehicle frame carries out left and right substantially, if the patent No. is that ZL 95225197.3(Granted publication number is CN 2242842Y) the disclosed < < of Chinese utility model patent Collapsible bicycle > >, this folding bicycle is equipped with a revolute pair formula folding locking device in the lower end of neutral tube, on this revolute pair formula folding locking device, have a pin-and-hole, one spring locking pin is installed in hole, on pin, draw a bracing wire, bracing wire can be placed in any position of vehicle body, when folding, only need pull-up locking pin, front tripod can neutral tube be that axle center rotation is to being affixed with Vee formation frame, realize folding.Although this folding bicycle after folding before and after vehicle body size shorten half, thickness increases, and handlebar and saddle cannot fold, and gives to carry and can bring certain inconvenience.

For improving the deficiency of above-mentioned folding bicycle, application number is that 02158267.X(publication number is CN 1428264A) Chinese invention patent application a kind of < < folding bicycle > > is disclosed, this folding bicycle is provided with the hinge of one or more horizontal axis in car beam posterior transversal, rear crotch is connected with Che Liang by hinge, between the lower end of stem and vertical tube of front fork, there is hinged and latching device, between saddle and saddle pipe and saddle pipe bottom and car beam, have hinge; When folding,, rotation or promote back vent forward, make back vent and the trailing wheel below in car beam first downwards, then rotating vehicle handle riser backward, makes handle bar folding on Che Liang, last, forward, be rotated down saddle pipe, it is folded on stem.Visible this folding bicycle can not increase vehicle body thickness after folding, but also has realized the folding of handlebar and saddle, makes the vehicle body volume after folding less, carries more convenient.But, by above-mentioned folding process, can be seen, this folding bicycle need to carry out substep to rear crotch, handlebar and saddle and fold, folding comparatively time-consuming.In addition, it is thin that the folding bicycle that this folding bicycle and above-mentioned < < Collapsible bicycle > > provide has vehicle frame equally, the shortcoming that vehicle body overall construction intensity is not high.

In sum, need existing folding bicycle to be further improved.

Summary of the invention

Technical matters to be solved by this invention is for above-mentioned prior art present situation, a kind of folding convenient is provided and can carries out to handlebar and saddle the folding bicycle of synchronous folding.

Another technical matters to be solved by this invention is to provide comparatively firmly folding bicycle of a kind of structure.

Another technical matters to be solved by this invention is to provide a kind of folding rear comparatively succinct folding bicycle of external structure.

The present invention solves the problems of the technologies described above adopted technical scheme: a kind of folding bicycle, comprise vehicle frame, be located at the handlebar of vehicle frame front upper place and be located at the saddle of vehicle frame back upper place, it is characterized in that: also include first connecting rod and second connecting rod, the front end of described vehicle frame is provided with for supported cart the stem that also can rotate before and after this vehicle frame is done, the rear end of described vehicle frame is provided with upper end above vehicle frame top and vertical rod after vertical rod and saddle before the saddle that relatively this vehicle frame is done rotate front and back, described saddle rear and front end is articulated with respectively the front vertical rod of above-mentioned saddle, the upper end of rear vertical rod, the front end of described first connecting rod and the upper end of described stem are hinged, the rear end of described second connecting rod be connected with vertical rod lower end after described saddle and with saddle after vertical rod keep synchronizeing rotation, simultaneously, described first connecting rod extends to the back lower place from front end, described second connecting rod extends to front lower place from rear end, and the rear end of first connecting rod and described second connecting rod front end are hinged.

In order to make front-wheel carry out synchronous folding with handlebar and saddle, described vehicle frame front end is also provided with a vertical tube of front fork that can rotate before and after vehicle frame is done and that be positioned at described stem below, the front end of the lower end of this vertical tube of front fork and a third connecting rod is hinged, and the rear end of this third connecting rod is hinged with the front end of described second connecting rod and the rear end of described first connecting rod simultaneously.Front-wheel is arranged on vertical tube of front fork by front fork, like this, handlebar and saddle carry out folding in, under the drive of third connecting rod, front-wheel is rotated to be taken in to vehicle frame below, thereby makes the bicycle volume after folding less, carries more convenient; In addition, bicycle is under folded state not time, and vertical tube of front fork and stem are on same straight line and be mutually fastened togather.

In order further to reduce the volume of the bicycle after folding, the posterior end portion of described vehicle frame is provided with the back vent that vehicle frame rotate before and after doing relatively, is also provided with the positive stop back vent after rotation being forward fixed on below vehicle frame in the posterior end of vehicle frame portion.Under positive stop effect, back vent and trailing wheel are limited in vehicle frame below.

In order to make the structure of folding bicycle comparatively firm, described vehicle frame comprises the first vehicle frame and the second vehicle frame that lays respectively at the car body left and right sides, at the top of the first vehicle frame and the second vehicle frame, there are respectively front and back to the first cross bar and the second cross bar that distribute, between the first cross bar bottom and the second cross bar bottom, pass through successively from front to back the first rotating shaft, the second rotating shaft is connected with the 3rd rotating shaft, and above-mentioned each rotating shaft is all perpendicular to the first described cross bar and the second cross bar, the lower end of described stem is fixed in the first rotating shaft, before described saddle, the lower end of vertical rod is fixed in the second rotating shaft, after described saddle, the lower end of vertical rod is fixed in the 3rd rotating shaft.By being positioned at the first vehicle frame and second vehicle frame of car body both sides, and be arranged on each rotating shaft between first, second cross bar, make the structural strength of car body better.Certainly, except adopting above-mentioned bilateral vehicle frame, also can adopt existing one-sided vehicle frame, but the structural strength of one-sided vehicle frame is lower, the external structure of folding rear bicycle is also succinct not.

As such scheme preferably, the front vertical rod of described saddle, rear vertical rod are two, and lay respectively between described the first cross bar and the second cross bar, described saddle comprises the first saddle and the second saddle that left and right is separated, the upper end of described stem is provided with verticle stem of handlebar, described handlebar is arranged on this verticle stem of handlebar, under bicycle folded state, after two described saddles, vertical rod is embedded between above-mentioned the first saddle and the second saddle, and described verticle stem of handlebar is embedded in after two described saddles between vertical rod.Like this, at verticle stem of handlebar, the forward and backward vertical rod of saddle and saddle, in synchronous folding process, just can mutually not stop, folding can carrying out smoothly, and after folding above-mentioned parts also between the first vehicle frame and the second vehicle frame, thereby make the bicycle external structure after folding comparatively succinct.

As such scheme further preferably, under bicycle folded state, the first described saddle and the left handle of the second saddle and described handlebar and right handle are subject to described the first cross bar and the second stopping of cross bar and spacing respectively.Like this, when first, second saddle turns to after leaning with first, second cross bar, just no longer rotate, similarly, when left and right handle turns to after leaning with first, second cross bar, just no longer rotate.

Further preferably, the first described rotating shaft below is provided with the 4th rotating shaft, and the 4th rotating shaft connects described the first vehicle frame and the second vehicle frame and parallels with this first rotating shaft, and the upper end of described vertical tube of front fork is fixed in the 4th rotating shaft.By the setting of the 4th rotating shaft, further improved on the one hand the structural strength of vehicle frame, be also convenient on the other hand vertical tube of front fork and do to rotate smoothly.

For vertical rod after more comfortable, the described saddle that makes to ride extends upward and is formed with saddle backrest.Like this, in the time of by bike, back is leaned against to saddle backrest, can relieving sports fatigue, increase comfort level.

Compared with prior art, the invention has the advantages that: because the forward and backward vertical rod of saddle, saddle of this folding bicycle and the vehicle frame that is positioned between the forward and backward vertical rod of saddle form four-bar mechanism, and being positioned at vehicle frame rear end synchronizes the second connecting rod rotating and can drive stem synchronously to rotate by first connecting rod with vertical rod after saddle, make to turn to forward near in the process of vehicle frame at saddle, stem drives handlebar synchronously to rotate backward until near vehicle frame, thereby realized the synchronous folding of handlebar and saddle, folding very convenient.In addition, because the present invention has also adopted the body frame structure for automotive consisting of the first vehicle frame and the second vehicle frame, not only make the integral structure of car body comparatively firm, and after folding, each parts, between the first vehicle frame and the second vehicle frame, make the external structure of bicycle seem comparatively succinct.

Accompanying drawing explanation

Fig. 1 is the three-dimensional structure diagram of the embodiment of the present invention;

Fig. 2 is the three-dimensional structure diagram of another angle of folding bicycle shown in Fig. 1;

Fig. 3 is the left view of folding bicycle shown in Fig. 1;

Fig. 4 is left view when folding bicycle is partially folded shown in Fig. 1;

Fig. 5 is the three-dimensional structure diagram after folding bicycle shown in Fig. 1 folds completely;

Fig. 6 is the left view of folding bicycle shown in Fig. 5.

For making figure succinct, power part is not expressed in the drawings.

The specific embodiment

Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.

As shown in Figures 1 to 6, the vehicle frame of the folding bicycle in the present embodiment consists of the first vehicle frame 11 and the second vehicle frame 12, the first vehicle frame and the second vehicle frame are located at respectively the left and right sides of car body, the bicycle structure of this bilateral vehicle frame is more firm, and each assembly of bicycle all in the inner space between the first vehicle frame 11 and the second vehicle frame 12, makes the bicycle external structure after folding more succinct after folding.Certainly, the present invention also can adopt one-sided body frame structure for automotive.At the top of the first vehicle frame 11 and the second vehicle frame 12, there are respectively front and back to the first cross bar 13 and second cross bar 14 of horizontal distribution, bottom at the first cross bar 13 is provided with the first axis hole 51 from front to back successively, the second axis hole 52 and Triaxial hole 53 be totally three axis holes, bottom at the second cross bar 14 is also provided with the first corresponding axis hole 51 from front to back successively, the second axis hole 52 and Triaxial hole 53 be totally three axis holes, between above-mentioned two the first axis holes 51, the first rotating shaft 41 is installed, between above-mentioned two the second axis holes 52, the second rotating shaft 42 is installed, between above-mentioned two Triaxial holes 53, the 3rd rotating shaft 43 is installed, and above-mentioned each rotating shaft is all perpendicular to the first cross bar 13 and the second cross bar 14.In addition, the front end of the first vehicle frame 11 be positioned at the first axis hole 51 below locate to be provided with the 4th axis hole 54, the front end of the second vehicle frame 12 be positioned at the first axis hole 51 below locate to be provided with the 4th axis hole 54, the four rotating shafts 44 and be arranged between above-mentioned two the 4th axis holes 54 and with the first rotating shaft 41 and parallel.

Before saddle, vertical rod 22 is two, between the first cross bar 13 and the second cross bar 14, and before two saddles, the lower end of vertical rod 22 is separately fixed at the two ends of the second rotating shaft 42, like this, rotation along with the second rotating shaft 42, before saddle, vertical rod 22 just can be rotated before and after the first cross bar and the second cross bar work, and before two saddles, the upper end of vertical rod 22 exceeds the first cross bar and the second cross bar and is hinged with the front end of the first saddle 51 and the second saddle 52 respectively.Accordingly, after saddle, vertical rod 23 is two, between the first cross bar 13 and the second cross bar 14, and after two saddles, the lower end of vertical rod 23 is separately fixed at the two ends of the 3rd rotating shaft 43, like this, rotation along with the 3rd rotating shaft 43, before saddle, vertical rod 22 can be rotated before and after the first cross bar and the second cross bar work, after two saddles, the upper end of vertical rod 23 exceeds the first cross bar and the second cross bar and is hinged with the rear end of the first saddle 51 and the second saddle 52 respectively, and after two saddles, vertical rod 23 extends upward formation saddle backrest 26.In addition, thereby the rear end of second connecting rod 32 is fixed in the 3rd rotating shaft 43 with vertical rod after two saddles 23 and keeps synchronize rotations, and this second connecting rod 32 is from its rear end to front lower place extension setting.Like this, saddle, the forward and backward vertical rod of saddle and the cross bar between second and third rotating shaft form four-bar mechanism jointly, during this four-bar mechanism work, saddle rotates to front lower place and is spacing until the first saddle 51 and the second saddle 52 were subject to respectively in the first cross bar 13 and stopping of the second cross bar 14, and can drive second connecting rod 32 to do backward synchronous rotation when this four-bar mechanism work.

The lower end of stem 21 is fixed in the first rotating shaft 41 and oblique back upper place arranges, and like this, along with the rotation of the first rotating shaft, stem 21 just can rotate before and after the first cross bar 13 and the second cross bar 14 works.Verticle stem of handlebar 24 is installed in upper end at stem 21, and the left handlebar 61 of handlebar and right handlebar 62 are arranged on the top of verticle stem of handlebar 24.The upper end of vertical tube of front fork 25 is fixed in the 4th rotating shaft 44 and oblique front lower place arranges, on the opposing end surface of stem 21 and vertical tube of front fork 25, be provided with the snap-in structure 27 of mutual engaging, bicycle is under folded state not, stem 21 also mutually snaps into one on same straight line with vertical tube of front fork 25, like this, when driving, just cannot fold parts such as stem 21 and verticle stem of handlebars 24, guarantee traffic safety.Front fork 72 and front-wheel 82 are fixed on the below of vertical tube of front fork 25, the lower end of vertical tube of front fork 25 is hinged by connecting strap 34 and the front end of third connecting rod 33, the front end of the rear end of third connecting rod 33 and above-mentioned second connecting rod 32 is hinged, simultaneously, the rear end of third connecting rod 33 is also hinged with the rear end of first connecting rod 31, and from its rear end, oblique front upper place arranges and its front end is articulated with the upper end of stem 21 first connecting rod 31.Like this, when above-mentioned four-bar mechanism work drives second connecting rod 32 synchronously to rotate backward, second connecting rod 32 can drive third connecting rod 33 and first connecting rod 31 to move backward.Third connecting rod 33 backward movement can drive vertical tube of front fork 25 and be fixed on the parts such as front fork 72 on vertical tube of front fork 25, front-wheel 82 and rotates backward, and until to be accommodated in the front end of the first vehicle frame 11 and the second vehicle frame 12 inner; First connecting rod 31 backward movement can drive stem 21, verticle stem of handlebar 24 and handlebar to rotate backward, and spacing until left and right handlebar is subject to respectively stopping of first, second cross bar, to realize the synchronous folding of saddle, verticle stem of handlebar and front-wheel.Otherwise, rotate backward stem 21, verticle stem of handlebar 24 and handlebar, it finally drives vertical tube of front fork 25 and above-mentioned four-bar mechanism to move by first connecting rod 31, also can realize the synchronous folding of verticle stem of handlebar, front-wheel and saddle, specifically can, with reference to above-mentioned course of action, not repeat them here.

In the present embodiment, also be provided with trailing wheel fold mechanism, particularly, between the first vehicle frame 11 and the posterior end portion of the second vehicle frame 12, be provided with the back vent 71 that can rotate before and after vehicle frame is done, trailing wheel 81 is arranged on back vent 71, in the posterior end portion of the first vehicle frame and the second vehicle frame, is respectively equipped with a positive stop 9.During folding trailing wheel 81, rotate trailing wheel 81 and make its rear end that is accommodated in the first vehicle frame 11 and the second vehicle frame 12 inner, now, positive stop 9 can stop that back vent 71 rotates backward, thereby the bicycle volume after making to fold is less, carries more convenient.

For strengthening the sound construction degree of car body, and be simultaneously also convenient to each parts and be well on folding, the front vertical rod 22 of saddle, rear vertical rod 23 are two, and respectively between the first cross bar 13 and the second cross bar 14, saddle comprises the first saddle 51 and the second saddle 52 that left and right is separated, under bicycle folded state, after two saddles, vertical rod 23 is embedded between above-mentioned the first saddle 51 and the second saddle 52, and verticle stem of handlebar 24 is embedded in after two saddles between vertical rod 23.Like this, vertical rod 22 before verticle stem of handlebar 24, saddle, rear vertical rod 23 and saddle just can mutually not stop in synchronous folding process, folding can carrying out smoothly.In addition, the first connecting rod 31 in the present embodiment, second connecting rod 32 and third connecting rod 33 also all adopt two, in the bottom of the first vehicle frame 11 and the second vehicle frame 12, also by reinforcing rod 10, are connected, and with this, further strengthen the integral structure firmness of this folding bicycle.

The foregoing is only the preferred embodiment of the present invention; should be understood that; for those of ordinary skills; do not departing under principle prerequisite of the present invention; can make multiple remodeling or improvement to the present invention; such as, the first connecting rod in the present invention, second connecting rod and third connecting rod all can substitute with the similar attaching parts such as the first connecting strap, the second connecting strap and the 3rd connecting strap respectively, within these are all regarded as protection scope of the present invention.

Claims

1. a folding bicycle, comprise vehicle frame, be located at the handlebar of vehicle frame front upper place and be located at the saddle of vehicle frame back upper place, it is characterized in that: also include first connecting rod (31) and second connecting rod (32), the front end of described vehicle frame is provided with for supported cart the stem (21) that also can rotate before and after this vehicle frame is done, the rear end of described vehicle frame is provided with upper end above vehicle frame top and vertical rod (23) after vertical rod (22) and saddle before the saddle that relatively this vehicle frame is done rotate front and back, described saddle rear and front end is articulated with respectively the front vertical rod (22) of above-mentioned saddle, the upper end of rear vertical rod (23), the upper end of the front end of described first connecting rod (31) and described stem (21) is hinged, the rear end of described second connecting rod (32) be connected with vertical rod (23) lower end after described saddle and with saddle after vertical rod (23) keep synchronizeing rotation, simultaneously, described first connecting rod (31) extends to the back lower place from front end, described second connecting rod (32) extends to front lower place from rear end, and the rear end of first connecting rod (31) and described second connecting rod (32) front end are hinged, described vehicle frame front end is also provided with one can be relative to vehicle frame work front and back vertical tube of front fork (25) that rotate and that be positioned at described stem (21) below, the front end of the lower end of this vertical tube of front fork (25) and a third connecting rod (33) is hinged, the rear end of this third connecting rod (33) is hinged with the front end of described the second vertical rod (32) and the rear end of described first connecting rod (31) simultaneously, the posterior end portion of described vehicle frame is provided with the back vent (71) that can rotate before and after vehicle frame is done, in the posterior end of vehicle frame portion, be also provided with the positive stop (9) that the back vent (71) after rotating is forward fixed on to vehicle frame below, described vehicle frame comprises the first vehicle frame (11) and the second vehicle frame (12) that lays respectively at the car body left and right sides, at the top of the first vehicle frame and the second vehicle frame, there are respectively front and back to the first cross bar (13) and the second cross bar (14) that distribute, between the first cross bar bottom and the second cross bar bottom, pass through successively from front to back the first rotating shaft (41), the second rotating shaft (42) is connected with the 3rd rotating shaft (43), and above-mentioned each rotating shaft is all perpendicular to described the first cross bar (13) and the second cross bar (14), the lower end of described stem (21) is fixed in the first rotating shaft, before described saddle, the lower end of vertical rod (22) is fixed in the second rotating shaft, the lower end of vertical rod after described saddle (23) is fixed in the 3rd rotating shaft, vertical rod (22) before described saddle, rear vertical rod (23) is two, and lay respectively between described the first cross bar (13) and the second cross bar (14), described saddle comprises the first saddle (51) and the second saddle (52) that left and right is separated, the upper end of described stem (21) is provided with verticle stem of handlebar (24), described handlebar is arranged on this verticle stem of handlebar, under bicycle folded state, after two described saddles, vertical rod (23) is embedded between above-mentioned the first saddle (51) and the second saddle (52), described verticle stem of handlebar (24) is embedded in after two described saddles between vertical rod (23), described the first rotating shaft (41) below is provided with the 4th rotating shaft (44), the 4th rotating shaft (44) connects described the first vehicle frame (11) and the second vehicle frame (12) and parallels with this first rotating shaft (41), the upper end of described vertical tube of front fork (25) is fixed in the 4th rotating shaft (44).

2. folding bicycle according to claim 1, it is characterized in that: under bicycle folded state, described the first saddle (51) and the left handle (61) of the second saddle (52) and described handlebar and right handle (62) are subject to respectively described the first cross bar (13) and stopping of the second cross bar (14) and are spacing.

3. according to the folding bicycle described in any one in claim 1 and 2, it is characterized in that: vertical rod after described saddle (23) extends upward and is formed with saddle backrest (26).