CN2543812Y

CN2543812Y - Miniature bicycle

Info

Publication number: CN2543812Y
Application number: CN02219066U
Authority: CN
Inventors: 吴方平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-21
Filing date: 2002-02-21
Publication date: 2003-04-09
Anticipated expiration: 2012-02-21

Abstract

The utility model discloses a miniature bicycle with small volume and function of a chair after being folded inside a back bag. In addition, the utility model also eliminates the defects of the prior bicycle, such as the lowest position has very small movement when human foot treads on the highest position of the bicycle. Therefore, the utility model has the advantages of labor force reduction and highly-improved efficiency.

Description

Mini bicycle

The utility model relates to a kind of vehicle that travel by the manpower driving, especially is useful on the bicycle.

At present, known bicycle is to step on pedal by pin to make sprocket rotation, and the chain transferring power is travelled to trailing wheel.Because chain, Poewr transmission mechanism such as sprocket wheel and back wheel location are disperseed, and will satisfy certain speed change and recently guarantee moving velocity, so volume ratio is bigger, be not easy to unfold, and heavy.

The purpose of this utility model provides a kind of mini bicycle and improves the above-mentioned bicycle of mentioning by following manner: reduce its volume by means of simple structural measure, alleviate its weight.

The purpose of this utility model be achieved in that it comprises the vehicle frame bar and be connected that handle on the vehicle frame bar is upright, saddle vertical rod, front fork, back vent.Connect horizontal standing to go up, connect saddle in the saddle vertical rod, adorn front-wheel on the front fork, adorn trailing wheel on the back vent, other is at the fixed mount of the affixed change-speed box in back vent limit.Dress change-speed box intermediate gear on the change-speed box fixed mount, the external gear of change-speed box, intermediate gear and inner gear intermesh, and inner gear is fixed on the hind axle of trailing wheel, the change-speed box axis be fixed on the external gear and also wherein an end pass the change-speed box inner gear, the another side of hind axle and back vent.The axis two ends of change-speed box are connected by the pedal rod of ratchet device with two pedals, and the effect of ratchet device is to make pedal rod one direction rotate carry-over moment to give change-speed box axis and each gear of change-speed box and trailing wheel, on the other hand to rotation, and carry-over moment not.Both sides two pedals are formed with following sheet by last slice, drivers's pin can be enclosed within slice and following sheet between, perhaps both sides two pedal rods connect by the pulley of flexible body through being fixed on the vehicle frame, when drivers's pin is stepped on a pedal, pedal rod descends and rotates, and drives change-speed box axis and each gear and trailing wheel rotation by ratchet device and advances.The instep band of another pin another pedal rising rotation simultaneously, or under the flexible body effect, the pedal rod of another side rises and rotates (not carry-over moment), and another pin is stepped on this pedal on one side again like this, and reciprocation cycle is constantly travelled mini bicycle like this.The utility model is torn turning point horizontal stroke, upright open on the vehicle frame bar saddle, upright, a vehicle frame bar, establishes the place that slides over each other in the saddle vertical rod.

Owing to adopted such scheme, not only volume is little, can be used as chair after unfolding and uses, and also can be placed in the knapsack, and overcome original bicycle pedal and locate on, and descending place's moment most is zero or very little shortcoming, makes mini bicycle laborsaving, and efficient improves.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation of the utility model after unfolding;

Fig. 3 is the assembly drowing of the utility model pedal, change-speed box, trailing wheel, back vent;

Fig. 4 is the work scheme drawing of the utility model change-speed box;

Fig. 5 implements illustration for another.

Among the figure 1, upright; 2, horizontal; 3, front fork; 4, front-wheel; 5, vehicle frame bar; 6, front wheel spindle; 7, saddle; 8, saddle vertical rod; 9, pulley; 10, flexible body; 11, pedal; 12, pedal rod; 13, change-speed box; 14, trailing wheel; 15, back vent; 16, the upright place that slides over each other; 17, upright removable turning point; 18, the removable turning point of vehicle frame bar; 19, vehicle frame bar, saddle vertical rod slip place; 20, the horizontal turning point of tearing open; 21, saddle is torn turning point open; 22, change-speed box external gear; 23, change-speed box axis; 24, cylindrical bearing; 25, change-speed box fixed mount; 26, change-speed box intermediate gear; 27, change-speed box inner gear and hind axle; 28, ratchet device; 29, bearing; 30, pedal (11) last slice; 31, following of pedal (11).

In Fig. 1,2,3,4,5, vehicle frame bar (5) connects upright (1), saddle vertical rod (8), front fork (3), back vent (15), upright (1) is connected horizontal (2), and saddle vertical rod (8) is gone up and is connected saddle (7), front fork (3) dress front-wheel (4), back vent (15) dress trailing wheel (14), back vent (15), on one side affixed change-speed box fixed mount (25), fixed mount (25) is gone up the intermediate gear (26) of dress change-speed box (13).The external gear (22) of change-speed box (13), intermediate gear (26), inner gear (27) intermeshes, the hind axle of inner gear (27) and trailing wheel is fixed together, affixed change-speed box axis (23) in the middle of the external gear (22) of change-speed box (13), axis (23) one ends pass inner gear and hind axle (27) and back vent (15) another side, the song of axis (23) two ends and pedal (11) is pedaled bar (12) and is connected into ratchet device (28), both sides pedal (11) is made up of last slice (30) and following sheet (31), drivers's pin can be enclosed between slice (30) and the following sheet (31), perhaps interconnects by the pulley (9) of flexible body (10) through being fixed on the back vent for the pedal rod (12) of another embodiment common pedal (11) on both sides.

Claims

1, a kind of mini bicycle, comprise vehicle frame bar (5), upright (1), saddle vertical rod (8), front fork (3), back vent (15), horizontal (2), saddle (7), front-wheel (4), trailing wheel (14), change-speed box (13), pedal (11), it is characterized in that: back vent (15) is affixed change-speed box fixed mount (25) on one side, fixed mount (25) is gone up the intermediate gear (26) of dress change-speed box (13), the external gear (22) of change-speed box (13), intermediate gear (26), inner gear (27) intermesh, the hind axle of inner gear (27) and trailing wheel.Be fixed together, affixed change-speed box axis (23) in the middle of the external gear (22) of change-speed box (13), axis (23) one ends pass inner gear and hind axle (27) and back vent (15) another side, the song of axis (23) two ends and pedal (11) is pedaled bar (12) and is connected into ratchet device (28), and both sides pedal (11) is made up of last slice (30) and following sheet (31).

2, according to claims 1 described a kind of mini bicycle, it is characterized in that: the pedal rod (12) of both sides pedal (11) interconnects by the pulley (9) of flexible body (10) through being fixed on the vehicle frame.