CN2129732Y

CN2129732Y - Multifunction folding bicycle

Info

Publication number: CN2129732Y
Application number: CN 92227888
Authority: CN
Inventors: 黄崇芬
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-07
Filing date: 1992-08-07
Publication date: 1993-04-14
Anticipated expiration: 2002-08-07

Abstract

The utility model relates to a multifunction folding bicycle. A vehicle frame is trapezoidal, a trapezoidal back angle formed by a back pipe and a lower beam is provided with a connecting sheet, the lower beam is hinged with the connecting sheet, a contact point at the front part of the lower beam is detachable, the lower beam and the back pipe can be parallel, and the middle part of an upper beam is provided with a bending mechanism which can turn at 180 DEG. When the bicycle is folded, the shaft of a front wheel and the shaft of a back wheel are in the same axial line for the convenience of push, pull and running, the utility model can be used as a luggage van, and the folding operation is simple.

Description

Multifunction folding bicycle

The utility model relates to bicycle, particularly a kind of Collapsible bicycle of ladder type frame.

The design plan of at present relevant bicycle folding is more, but all is to adopt traditional triangle frame, can't find the break of a symmetry, and after folding, the axle of front and back wheel is difficult to the push-and-pull walking not on same axis, can only be portable, and heavy and impracticable.The fold mechanism complexity of some folding bicycle, operation inconvenience.

The purpose of this utility model is to provide a kind of folding operation conveniently, and can be as the multifunctional folding bicycle of push-and-pull dolly after folding.

Described folding bicycle, vehicle frame are trapezoidal, and its four edges is respectively upper beam, underbeam, preceding pipe, back pipe.Its forward and backward pipe symmetry of putting the beams in place relatively.The relief angle that underbeam and back pipe constitute be forked be back vent, be used to adorn trailing wheel.The contact pin and the underbeam at relief angle place are hinged, and chain sprocket and pedal are adorned in the underbeam middle part, and the front portion of underbeam is removable, as a to close contact, if it is taken apart, but the hinge-point of underbeam solderless wrapped connection sheet rotation and arranged side by side with the back pipe.There is a bent bending mechanism of 180 ° at the middle part of putting the beams in place.

Handlebar has a straight tube that stretches out to car the place ahead, there is cross recess its end, with the vertical transverse tube middle part that cooperates of straight tube cross recess is arranged also, the cross recess of two pipes is meshed, and the bolt at transverse tube middle part inserts the straight tube port, to be threaded, screw this bolt, straight tube and barrel are fastened can not to rotate mutually, and unscrewing the intermeshing cross recess of this bolt can withdraw from, and rotatable transverse tube.

Described folding bicycle, removable the going to the back of its underbeam managed side by side, the only bending mechanism place bending of putting the beams in place, its folding operation is convenient, because of the forward and backward pipe symmetry of putting the beams in place relatively, folding after, the axle coaxial line of front and rear wheel, but the push-and-pull walking, if article are placed on the shelf, its function is equivalent to baggage car.Be convenient to the tourist after folding and it taken on the long-distance vehicle such as train, can within one minute, its expansion be ridden after arriving the destination, as the short distance traffic instrument.If the handlebar broad is disliked in folding back, transverse tube can be gone to and vertically reduce transverse width.

The front view of the described bicycle of Fig. 1;

Fig. 2 vehicle frame folding, the birds-eye view that the transverse tube of handlebar does not rotate;

Fig. 3 vehicle frame folding, the transverse tube of handlebar changes 90 ° lateral plan;

The put the beams in place birds-eye view (embodiment one) of bending mechanism of Fig. 4;

Fig. 5 is the lateral plan that Fig. 4 closes up state;

The front view of Fig. 6 underbeam contact;

Fig. 7 is that the A of Fig. 1 is to view;

The put the beams in place front view (embodiment two) of locking state of bending mechanism of Fig. 8;

Fig. 9 is the constitution diagram that draws back of Fig. 8;

Figure 10 is the bending state figure of Fig. 9;

The birds-eye view of Figure 11 underbeam contact.

Embodiment one:

Vehicle frame is trapezoidal, and the contact pin 7 of its relief angle is fixing with back pipe 9, and is hinged with underbeam 6.The relief angle of vehicle frame is forked, is used to adorn trailing wheel.Underbeam 6 middle parts dresses chain sprocket and pedal, its anterior removable contact that closes 5 is as Fig. 6, and contact 5 one ends are forked, and the bolt 14 of a band knob is laterally arranged, and there is a recess flat end of the contact other end, is stuck on the bolt 14 to lock then.Bending mechanism 2(such as Fig. 4,5 of putting the beams in place), the pipe of putting the beams in place is open circuited at the middle part, the breakpoint two ends are fixing toggle 10,11 respectively, two toggles are at one end hinged, toggle 10 other ends have notched ring 12, toggle 11 other ends vertically are equipped with rotating cotter pilotage 13, and it can enter the landolsring 12 of toggle, change 90 ° and are stuck in the landolsring and can not withdraw from afterwards.Preceding pipe 2 bottoms dress front fork and front-wheel, top entrucking handle, as Fig. 7, transverse tube 9 middle parts have one perpendicular to the cross recess of transverse tube and the cross recess engagement of straight tube 3 ends, bolt 16 inserts in the straight tube port, is threaded, and screws straight tube 3 transverse tubes 9 lockings soon, unscrew, the ingear cross recess can withdraw from transverse tube 9 is rotated.

Embodiment two:

The bending mechanism 2 of putting the beams in place is as Fig. 8,9,10, and the breakpoint two ends have outside thread and jam nut 16 respectively, insert slide bar 17 respectively in the upper beam pipe at breakpoint two ends, king-rod 18 two ends are hinged with slide bar 17 respectively, unclamp jam nut 16 when folding, pulling slide bar 17 is two hinge-point place bendings, the contact 5 of underbeam, as Figure 11, an end is forked, and transverse holes is arranged, the flat end of the other end is porose, and chimeric back inserting bolt 19 screws.All the other are identical with embodiment one.

Claims

1, multifunctional folding bicycle, front and rear wheel is arranged, front fork, handlebar, it is characterized in that: vehicle frame is trapezoidal, the preceding pipe 4 of vehicle frame, back pipe 8 be upper beam 1 symmetry relatively, and back pipe 8 is forked with the vehicle frame relief angle that underbeam 6 constitutes, i.e. back vent, the contact pin 7 at relief angle place is hinged with underbeam 6, underbeam 6 middle parts dress chain sprocket, underbeam 6 front portions are removable, as to close contacts 5, there is a bent bending mechanism of 180 ° 2 at 1 middle part of putting the beams in place.

2, by the described bicycle of claim 1, it is characterized in that: an end of underbeam contact 5 is forked, and the bolt 14 of a band knob is laterally arranged, and there is recess the flat end of contact 5 other ends, may be stuck in locking on the bolt 14.

3, by the described bicycle of claim 1, it is characterized in that: the breakpoint two ends of upper beam bending mechanism 2 are fixing toggle 10,11 respectively, two toggles are at one end hinged, and the other end of toggle 10 has notched ring 12, and toggle 11 other ends vertically are equipped with rotating cotter pilotage 13.

4, by the described bicycle of claim 1, it is characterized in that: an end of underbeam contact 5 is forked, and transverse holes is arranged, and there is transverse holes the flat end of contact 5 other ends, chimeric back, two ends inserting bolt 19.

5, by the described bicycle of claim 1, it is characterized in that: the bending mechanism 2 breakpoint two ends of upper beam have outside thread and jam nut 16 respectively, insert slide bar 17 respectively in the upper beam pipe at breakpoint two ends, and king-rod 18 two ends are hinged with the slide bar 17 at two ends respectively.

6, by the described bicycle of claim 1, it is characterized in that: there are vertical self a cross recess engagement of cross recess and straight tube 3 ends, the connection of bolt 15 insertion straight tubes 3 port negative threads in transverse tube 9 middle parts of handlebar.