CN2408025Y - Rotary contract portable quick folding bicycle - Google Patents

Abstract

The utility model relates to a rotary contract portable quick folding bicycle. A vehicle body uses an entirety interconnection technique of a separated structure, and is provided with a set of rotary combined sleeve central shaft and a double pipe type cross beam having a telescopic function, etc. The rotation of a back wheel bicycle frame part is conducted through the central shaft combined sleeve, and the model of the bicycle body is converted. The telescopic double pipe type cross beam is changed from inclination of front and back to horizontality, and the double pipe type cross beam is composed of a front and a back double pipes having different calibres and a middle pipe stroage box. The pipe is pushed in from both ends to the middle, and the bicycle body is contracted to the compact degree of one third. The contraction replaces the folding process, and the rotary contract portable quick folding bicycle has the advantages of simple structure, quick operation, and basically has the functions of replacing walking, carryover, storage, etc.

Description

The portable fast folding bicycle of a kind of rotary contract type

The utility model relates to a kind of quick folding device of bicycle.Especially be applied to the portable bicycle that is easy to carry, deposits.

For a long time, people are exactly the folding of constantly exploring bicycle.But because the radical function of bicycle is its riding property and corresponding speed, and all kinds of vehicle all is confined to whole unified pattern in the design of body frame structure for automotive.Therefore, it brings the limitation that is difficult to overcome to folding technology.Just at present the known means that adopt nothing more than as similar process such as hinges, bolt-type.Require the mobilizable joint of vehicle body to increase but its shortcoming is it, outer attachment is more, and it is complex structure not only, also can influence the firm degree of car body.While is the comparatively ideal folding effect of out of reach also, is difficult to be widely used.

The purpose of this utility model is to provide a kind of energy quickly-folding portable bicycle and one cover to revolve the technique device that contracts.It has not only improved the limitation that the traditional vehicle shelf structure exists, and uses to shrink the folding technology of replacement, and it is not only simple in structure, also can make the compacter degree that reaches of shrinking.

The utility model is to adopt following scheme to realize: the foregoing technique device that contracts that revolves is exactly to set up an overcoat at the car axis can revolve axis and overlap again, and the central authorities of overlapping sphere again have the dead slot, the dead slot width that prolong garden week arc length 170-180 degree together to be slightly larger than the external diameter that seat is pedaled standpipe.Rear wheel fork only is fixed on again and puts, and trailing wheel supports, and rack for books and newspaper is upright point with rear wheel fork all, and the upper end is connected with the knot that can be undone by a pull that seat is pedaled riser upper, so is combined into the triangle-frame of trailing wheel part.

The leading portion of vehicle frame is seat to be pedaled standpipe still be fixed on the former interior axis by overlapping dead slot again, and there are a joint 15 centimeter length sleeve pipes seat standpipe bottom apart from axis 10 centimeters, and it turns to sleeve pipe corresponding with the front fork handgrip; The front fork handgrip all recedes with 20 degree with the back seat standpipe.Fixing one pair of two-tube one-tenth 90 degree connection on forward and backward sleeve pipe separately stretches to respectively in the middle storage pipe control box.So promptly constituted the vehicle frame first half of a two-tube single-beam formula.The feature of said structure is that it changes the vehicle frame body by the revolved function of using multiple cover axis; When rear wheel fork was spent with trailing wheel backspin 90-100, cross member of frame was in horizontality, and different two-tube just can the propellings of two ends bore this moment reaches in the middle storage pipe control box to shrink the folding purpose of replacement.

The utility model is compared with existing bicycle folding technology because it has improved the folded limitation of traditional car body doubling and to shrink the scheme that replaces folding technology.It is not only simple in structure, outer attachment is few, and the unfolded vestige, and shrinkage amplitude is big, and the tool free operation is more easy and convenient.

Embodiment is further described below in conjunction with accompanying drawing:

Fig. 1 is the basic diagrammatic sketch of body construction.

Fig. 2 can revolve axis to overlap phantom view again.

Fig. 3 is a storage pipe control box locker section-drawing.

Among the figure 1, precedingly turn to that sleeve pipe 2, front stretching are two-tube 3, flexible two-tube 4, the storage pipe control box 5 in back, tube storing box locker 6, seat are pedaled standpipe 7, seat is pedaled standpipe case in 8, fixed cover 9, interior driving axis 10, can revolve that axis overlaps 11 again, rear wheel fork 12, back support 13, rack for books and newspaper 14, back support knot that can be undone by a pull

Implement by making following program among Fig. 1: knot that can be undone by a pull (14) is supported in loosening back comes off support (12) upper end voluntarily, with rear wheel fork (11) together with trailing wheel cw backspin 90-100 degree, it is in alignment that rear wheel fork (11) is just pedaled standpipe (6) with the seat on axis top, rack for books and newspaper (13) also stretches along with drop-down simultaneously, improve the axis position, the front and back wheel rim is drawn close, two-tube crossbeam is horizontal, back-out fixed cover (8) again seat is pedaled standpipe (6) cover (8) that turn 90 degrees left and be tightened together with trailing wheel, also corresponding 90 degree that turn in to the right of front-wheel handgrip, make front and back wheel arranged side by side, car body is H shape; The locker (5) at loosening then storage pipe control box (4) two ends, and bore different flexible two-tube (2) and (3) in crossbeam rear and front end just can push in the storage pipe control box (4), so far, vehicle body has been shrunk to 20 centimetres of wide dandy horses of wheelspan.

Claims (3)

1, the portable fast folding bicycle of a kind of rotary contract type, it overlaps the car body device that axis and flexible two-tube cross member of frame are formed again by revolving property, it is characterized in that: on axis, set up an overcoat and can revolve axis and overlap again, and constitute the trailing wheel part of vehicle frame as attachment point; The front portion of vehicle frame is pedaled standpipe from front fork handgrip turning sleeve to central axis seat and is two-tubely formed with the middle telescopic two-tube crossbeams of storage pipe control box bonded assembly by forward and backward two pairs respectively.

2, rotary contract type folding bicycle according to claim 1 is characterized in that: can revolve the sphere that axis overlaps central authorities again has the dead slot that prolongs garden week arc length 170-180 degree together, the width of groove is slightly larger than the external diameter that seat is pedaled standpipe, rear wheel fork only is fixed on again and puts, trailing wheel supports, and rack for books and newspaper all is point of connection, and is connected to constitute the triangle-frame of trailing wheel part with the knot that can be undone by a pull that seat is pedaled riser upper with the rear wheel fork end.

3, rotary contract type folding bicycle according to claim 1, its feature also is: the preceding two-tube of telescopic two-tube crossbeam is fixed on the front fork handgrip turning sleeve, two-tube fixing present the pedaling on the sleeve pipe of standpipe in back, middle with the storage pipe control box of forming by inner catheter and two lockers be connected and constitute one before and after become 20 degree to tilt, front and back bore two-tube and storage pipe control box inner catheter should be to overlap cooperation each other mutually.

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