CN201161667Y - A foldable dual-purpose bicycle for riding and dragging - Google Patents

Abstract

A foldable dual-purpose bicycle for riding and dragging is mainly composed of a handlebar, a front fork rod, a top beam, a bottom beam, a rear fork rod, a seat post, front and rear wheels, pedals, a secondary transmission chain device and a towing rack. The basic structure is triangular, and its characteristics are: the transmission system is fixed on the movable bottom beam, so that the bottom beam can rotate, and the front fork and rear fork can be turned over, so that the front and rear wheels are parallel and close together. And add the towing frame to realize the deformation between the bicycle and the trailer. The utility model can be unfolded into a simple bicycle and folded into a convenient trailer. It is easy to use and practical, and it is a good helper for traveling.

Description

A foldable dual-purpose bicycle for riding and dragging

Technical field

The utility model relates to a foldable dual-purpose bicycle for riding and dragging.

Background technique

Existing bicycle structure mostly adopts quadrilateral fixed vehicle frame, and existing foldable bicycle is not suitable for being placed at home because tire is too big, structure is complicated, carrying laborious, folding inconvenience, volume is big. In order to overcome the problems existing in the above-mentioned bicycles, the utility model proposes a foldable dual-purpose bicycle for riding and dragging.

Contents of the invention

The purpose of the utility model is to provide a foldable dual-purpose bicycle for riding and dragging which is simple in structure, convenient to fold, and light to carry.

Technical solutions

The purpose of this utility model is achieved like this: as shown in Figure 1, foldable riding and dragging dual-purpose bicycle mainly consists of handlebar, front fork lever, top beam, bottom beam, rear fork lever, seat bar, front and rear wheels, pedal , two-stage transmission chain device and tow frame.

When the dual-purpose bicycle for riding and dragging is folded, the connection between the bottom beam and the front fork can be disengaged, and the bottom beam will rotate around the rear wheel shaft to be attached to the rear fork, and the front end of the bottom beam will be connected to the upper part of the rear fork. After rotating the front fork and the rear fork 90 degrees, move them closer to the center, and at the same time put down the lower part of the front fork and the rear fork, and connect and fix them, then fold the handlebars and compress them into the front sleeve, and the seat post shrinks Fold back the rear fork. When towing, you can hold the upper part of the top beam and drag. If you have something to haul, you can put down the towing rods in the front fork and rear fork, you can put the luggage, and then easily tow it away.

The utility model expands and is a simple bicycle. Because the front-wheel 5 that adopts, rear-wheel 10 is less (within allowing a certain range), so transmission system 12 adopts secondary chain drive, to guarantee traveling speed.

The beneficial effects of the utility model are:

The utility model is a foldable dual-purpose bicycle for riding and dragging with simple structure. The bicycle can be folded conveniently and quickly. After the front and rear wheels are put together, the occupied area is small, the weight is light, and it is convenient to haul, so that the folded bicycle does not need to be moved It can also be towed with boxes, which is very practical.

Description of drawings

Fig. 1 is a structural schematic diagram when the utility model is expanded into a bicycle.

Fig. 2 is a schematic view of the folded front view of the utility model.

Fig. 3 is a schematic diagram of the folded side view of the utility model.

Detailed ways

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

As shown in Fig. 1, Fig. 2 and Fig. 3, a foldable dual-purpose bicycle for riding and dragging according to the present invention consists of a handlebar 1, a front sleeve 2, a front fork lever 3, a pole 4, a front wheel 5, and a top beam 6. Seat bar 7, rear sleeve 8, rear fork rod 9, rear wheel 10, bottom beam 11, transmission device 12, drag object frame 13 and form. It is characterized in that the transmission system 12 is used to fix on the bottom beam 11, and the front end of the bottom beam 11 is hooked on the shaft pin of the lower hinge of the front sleeve 2. The front fork rod 3 passes through the front sleeve 2, so that the front wheel 5 can be turned to. The upper part of the front sleeve 2 is hingedly connected with the top beam 6 . Top beam 6 and rear sleeve 8 are also connected by hinges. Rear fork rod 9 is enclosed within rear sleeve 8, can realize the steering of rear wheel 10. The seat rod 7 is hinged on the rear sleeve 8 and sleeved on the rear fork rod 9 .

When the dual-purpose bicycle for riding and dragging is folded, disengage the joint between the bottom beam 11 and the front sleeve 2, make the bottom beam 11 rotate upward around the central axis of the rear wheel 10, close to the rear fork rod 9, and put the bottom beam 11 The front end of 11 is articulated on the top of rear fork rod 9. Then rotate the front fork lever 3 and the rear fork lever 9 in the same direction by 90 degrees and then move closer to the center, then put down the pole 4, connect the lower part of the front fork lever 3 and the rear fork lever 9, and finally fold the handlebar 1 in half by 90 degrees The front fork rod 3 top is retracted in the sleeve 2, the seat rod 7 is shortened and folded toward the rear fork rod 9 top and close together.

As shown in Fig. 2 and Fig. 3, the towing rack 13 is put down, so that the luggage can be towed by holding the top beam 6 top.

To unfold the trailer in Figure 3 into the bicycle in Figure 1, the folding process can be reversed.

The utility model expands and is a simple bicycle. The front wheel 5 that the utility model adopts, the trailing wheel 10 is less (within allowing a certain range), so transmission system 12 has applied secondary chain drive, to guarantee traveling speed.

Claims (2)

1. collapsible riding dragged dual-purpose bicycle, mainly by cross handle (1), and front sleeve (2), front fork stem (3) is taken bar (4), front-wheel (5), back timber (6) is sat bar (7), back sleeve (8), rear fork (9), trailing wheel (10), bottom girder (11), driving device (12) drags thing frame (13) composition that is hinged, and it is characterized in that: front fork stem (3) passes in front sleeve (2), front fork stem (3) top connects cross handle (1), turns to realize front-wheel (5); Rear fork (9) passes back sleeve (8), turns to realize trailing wheel (10); Be fixed with transmission device (12) on the bottom girder (11); The bottom girder (11) and the hitching position of front sleeve (2) are thrown off, bottom girder (11) is upwards rotated around the center shaft of trailing wheel (10), draw close in rear fork (9), and the front end of bottom girder (11) is articulated in the top of rear fork (9); Again front fork stem (3) and rear fork (9) are revolved in the same way turn 90 degrees the back in draw close.

2. collapsible riding according to claim 1 dragged dual-purpose bicycle, it is characterized in that: the bicycle after folding has been completed into the structure of Hand pulling vehicle, and back timber (6) top is pull handle, is equipped with in the fork of front fork stem (3) and rear fork (9) and drags thing bar (13).

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