CN2185719Y

CN2185719Y - Folding portable bicycle

Info

Publication number: CN2185719Y
Application number: CN 94205133
Authority: CN
Inventors: 唐昕
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-25
Filing date: 1994-03-25
Publication date: 1994-12-21
Anticipated expiration: 2004-03-25

Abstract

The utility model relates to a folding portable bicycle which belongs to a vehicle. The rear wheel of the bicycle is big, and the front wheel of the bicycle is small. A triangular supporting frame is arranged in front of a quadrangular bicycle frame. The top end of the supporting frame is hinged with left and right stepping arms. The two stepping arms are connected by a chain and a rope which penetrate through a pulley. The both ends of a central axis are respectively provided with a flywheel. A big chainwheel on the furthest end on the right of the central axis and the flywheel of the real wheel are transmitted by a second stage chain. The saddle of the bicycle is big, is provided with a backrest, and is very comfortable. The bicycle saddle is low, and the center of gravity of the saddle is low. Two legs can reach the ground at any time to get free of falling down, so the utility model is very safe. Because the stepping arms are long, a rider can save labor. The speed of the bicycle can be increased by the second stage speed changing. When folded, the size of the bicycle body is reduced, so the utility model is convenient for being stored and carried.

Description

Folding portable bicycle

The utility model relates to a kind of folding light bicycle, belong to transportation means.

China is a bicycle big country, and bicycle is indispensable instrument in daily life.But there is weak point in it: 1, center of gravity is too high, easily falls down; 2, for a long time by bike, both hands are ached, and buttocks is easily pressed against wound; 3, the speed of a motor vehicle is required great effort more slowly and very; 4, car body is bigger, is not easy to deposit and carry.

The purpose of this utility model is to provide a kind of folding light bicycle.The not only comfortable safety of this car, and laborsaving quick, and can fold.

The purpose of this utility model is achieved in that it is to improve to form on the basis of ordinary bicycle, its trailing wheel is big, and front-wheel is little, and the distance between two-wheeled is little.Vehicle seat is very low, and both feet can be landed at any time, avoids falling down.Folding backrest is arranged, make health change sitting and lying type into by striding type, thus very comfortable.Axis is located on the front fork outer tube of vehicle frame.Step on arm and change swing into by rotation.Adopt two stage speed change: step on arm pulling one-level chain, the flywheel at axis two ends is rotated, thereby hinge wheel is rotated.Hinge wheel drives the flywheel of trailing wheel again by the secondary chain, thereby the driving car advances.About two step between the arm, be connected by two one-level chains and the rope that passes pulley.

Description of drawings

Fig. 1-structural representation of the present utility model.

The A place partial enlarged drawing of Fig. 2-accompanying drawing 1.

The B place partial enlarged drawing of Fig. 3-accompanying drawing 1.

The D place partial enlarged drawing of Fig. 4-accompanying drawing 1.

In conjunction with the accompanying drawings, structure of the present utility model is illustrated:

By Fig. 1, the utility model is collapsible light bicycle.It is improved to form on the basis of ordinary bicycle.The trailing wheel 2 of this car is big, and front-wheel 14 is little, and the distance between two-wheeled is little.On the axle of trailing wheel flywheel is arranged.Vehicle frame 1 is a quadrilateral structure, is welded into by pipe or other shaped steel.The vehicle frame front is welded with triangular supports 10.The top (see figure 3) of support 10 has bearing pin 17.The two ends of bearing pin 17 penetrate the pin-and-hole of stepping on arm 11 and 13 1 ends.Step on brachium more than 300, its stage casing is porose, in order to fixing one-level chain 12 and 12 ' an end.The other end of stepping on arm is fixed with pedal shaft.The shell of axis 8 is welded on the front fork outer tube 21 of vehicle frame.The two ends of axis 8, the name have a flywheel 15 and 15 '.Hinge wheel 9 is contained in the low order end of axis 8.On the vehicle frame 1, pulley 4 is arranged.Left chain 12 ' an end, be fixed on a left side and step on the hole of arm 11, through the left flywheel 15 on the axis 8 ', the other end is connected with rope 6.Rope passes pulley 4, and the other end is connected with right chain 12.Right chain is through the right flywheel 15 on the axis 8, and the other end is fixed on the right side and steps on the hole of arm 13.

Tetragonal vehicle seat is located at the top of vehicle frame 1.Have position-limited lever 22(to see Fig. 4 below) backrest 3, with hinge-coupled at the rear portion of vehicle frame.Screw 23 is arranged, in order to regulate the degree of dip of backrest on the vehicle frame 1.Backrest 3 is the time spent not, can fold forward to be affixed on the vehicle frame.Because vehicle seat is big, and the backrest that can change inclination is arranged again, and is very comfortable when riding.Again because vehicle seat is very short, so at the bottom of the center of gravity; And be convenient to both feet and land at any time, avoid falling down, very safe.

Handlebar 7(sees Fig. 2) be inserted in the front fork tube 20.One block 19 is arranged in this pipe.The end of handlebar vertical tube has a breach, is used to be stuck in block 19.When depositing or carry, can extract handlebar 7 easily, to dwindle car body.

The motion process of this bicycle is such: the right side is stepped on arm 13 and is lain low when initial, and it is vertical that arm 11 is stepped on a left side, after then getting on the bus, pedals left leg earlier, make a left side step on arm 11 around bearing pin 17 forward to lower swing, thereby pulling left chain 12 '.Left chain rotate on the one hand left flywheel 15 '.Left side flywheel rotates, and also is that axis 8 rotates.Axis rotates, and the hinge wheel 9 that is fixed on the axle is rotated.Hinge wheel 9 rotates trailing wheel 2 by the secondary chain.Left side chain 12 ' aspect is again by rope 6 and pulley 4 in addition, and pulling right chain 12 makes the right side step on arm 13 and upwards swings to vertical position backward around bearing pin 17.Then, pedal right leg again.Equally, arm pulling right chain is stepped on the right side.Right chain makes right flywheel rotate on the one hand, and then drives hinge wheel 9 and trailing wheel 2 rotations; In addition the aspect again by rope 6 pulleys 4 pulling left chains 12 ', it is vertical to make a left side step on arm.This shows that as long as pedal leg one time, axis just can turn around, axis just can change for two weeks when two legs are respectively pedaled one time.And ordinary bicycle, two legs are respectively pedaled once, and axis can only circle.Therefore, the revolution ratio ordinary bicycle of this bicycle is fast again.

The vehicle seat of this bicycle is big, and the backrest that can change the inclination angle is arranged, so very comfortable.Vehicle seat is short, and center of gravity is low, and bipod can land at any time, can not fall down, so very safe.Step on brachium, can be laborsaving.The two stage speed change transmission, rotating speed can double.It is the quick and small and exquisite bicycle of a kind of comfortable safety labor-saving, liked by people.

Claims

1, a kind of collapsible light bicycle, the big front-wheel (14) of trailing wheel (2) that it is characterized in that this car is little, vehicle frame (1) is a quadrilateral structure, this vehicle frame is welded with triangular supports (10), about being connected to, the top of support steps on arm (11), (13), two step on and use chain (12) (12 ') and rope (6) to pass pulley (4) between the arm again to be connected, axis (8) is contained on the front fork outer tube (21) of vehicle frame, flywheel (15) respectively is equipped with at the two ends of axis, (15 ') hinge wheel (9) is contained in the axis low order end, pulley (4) is contained under the vehicle frame, wide vehicle seat (5) is located on the vehicle frame, is hinged with folding backrest (3) behind the vehicle frame.

2, collapsible light bicycle according to claim 1 is characterized in that position-limited lever (22) is arranged at the backrest bottom, and set screw (23) is arranged on the vehicle frame, and both cooperate in order to regulate the inclination angle of backrest.

3, collapsible light bicycle according to claim 1 is characterized in that a block (19) is arranged in the front fork tube (20), and the vertical tube end of wheel (7) is jagged, in order to be stuck on the block (19).

4, collapsible light bicycle according to claim 1 is characterized in that stepping on arm (11) and (13) and respectively reaches more than the 300mm, and the one end has pin-and-hole, and the other end is equipped with the step axle.