Summary of the invention
The technical problem to be solved in the present invention is at the deficiencies in the prior art, has proposed a kind of folding and expansion, simple and easy smoothness, is easy to after folding to take in, and the portable folding bicycle that can make things convenient for pulsation-free to carry out.
The technical problem to be solved in the present invention is achieved through the following technical solutions, a kind of portable folding bicycle, comprise vehicle frame, vehicle seat, handlebar, front and rear fork, front and back wheel and fluted disc chain transmission system, vehicle frame comprises vertical tube of front fork and back seat intubate, be characterized in: the front portion of back seat intubate is provided with folding stand, the rear portion of vertical tube of front fork is provided with entablatrance and following swing arm, the end of folding stand and entablatrance by level to the axle hinged, the front end and the vertical tube of front fork of following swing arm are hinged, the rear end and the folding stand of following swing arm join, folding stand be provided with the level of joining with following swing arm to the guiding bearing pin, the rear end of following swing arm is provided with the guide groove that above-mentioned guiding bearing pin cooperates, and is provided with securing device in the end of guiding bearing pin.
The technical problem to be solved in the present invention can also come to realize that further folding stand is provided with arc shaped handle by the following technical programs.
The technical problem to be solved in the present invention can also be come by the following technical programs further to realize, is provided with the backfolding bearing pin of handlebar between the vertical tube of front fork of handlebar and vehicle frame, and the handle device for quickly disassembling is housed.
The technical problem to be solved in the present invention can also come further to realize by the following technical programs, is provided with seat pipe device for quickly disassembling between vehicle seat and the back seat intubate.
Folding operation process: the first step, draw back securing device, hand-held folding stand, mention back wheels of vehicle to the front upper place, the jointed shaft rotation of vehicle frame rear portion this moment between folding stand and entablatrance, swing arm is upwards rotated, and the guiding bearing pin slides along guide groove, then that front and back wheel is close behind suitable distance, the locking securing device.Second step, unclamp the handle quick detach, handlebar is rotated backward, close up up to handlebar.The 3rd step, unclamp seat pipe quick detach, the seat pipe is inserted into the bottom, the rotation cushion.It is folding that car load is finished in this three steps action.
Launch explanation: during expansion, unclamp securing device, vehicle body is gently drawn backward, front and back wheel just can easily be launched, and the locking securing device is extracted seat out and managed suitable height, and cushion rotated to the tram, locking bed pipe quick detach; At last with the outside Unscrew of handlebar to correct position, the lock handle quick detach.
The present invention compared with prior art great advantage is: the folding and simple and easy smoothness of expansion action, and it is comfortable to ride, and can steadily carry out after folding, and is fit to the crowded locations such as subway, market of coming in and going out; When travelling away from home, put into automobile trunk after also car can being folded, ride instead of walk at any time with convenient.
The specific embodiment
A kind of portable folding bicycle, comprise vehicle frame, vehicle seat 10, handlebar 5, front fork 2, back vent 13, front-wheel 1, trailing wheel 14 and fluted disc chain transmission system 15, vehicle frame comprises vertical tube of front fork 3 and back seat intubate 12, the front portion of back seat intubate 12 is provided with folding stand 9, the rear portion of vertical tube of front fork 3 is provided with entablatrance 6 and following swing arm 17, the end of folding stand 9 and entablatrance 6 by level to axle hinged, the front end of following swing arm 17 and vertical tube of front fork 3 are hinged, the rear end of following swing arm 17 and folding stand 9 join, folding stand 9 be provided with the level of joining with following swing arm 17 to the guiding bearing pin, the rear end of following swing arm 17 is provided with the guide groove 16 that above-mentioned guiding bearing pin cooperates, and is provided with securing device 8 in the end of guiding bearing pin.Folding stand is provided with arc shaped handle 7.
Be provided with the backfolding bearing pin of handlebar between the vertical tube of front fork 3 of handlebar 5 and vehicle frame, and handle device for quickly disassembling 4 is housed.Be provided with seat pipe device for quickly disassembling 11 between vehicle seat 10 and the back seat intubate 12.
Folding mode be front and back wheel side by side, so thinner thickness is high highly slightly, conveniently rests in the wall corner and fall, in the easier boot that lies in automobile, be easy to take in.When folding, only need unclamp quick detach, portable getting final product, and the effort of need not bending over only need gently be drawn upon deployment and just can be realized unfolding freely, it is light convenient to have accomplished.Side by side, can make things convenient for pulsation-free to carry out before and after folding back front and back wheel still keeps, when the location of coming in and going out crowded, show laborsaving advantage of saving worry fully.