CN2086711U

CN2086711U - Children's bicycle

Info

Publication number: CN2086711U
Application number: CN 90224415
Authority: CN
Inventors: 王家华
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-12-01
Filing date: 1990-12-01
Publication date: 1991-10-16

Abstract

The utility model relates to a rocking bicycle for children, which is a safe and labor-saving manual bicycle which can be used by different age groups of children and can move as long as the handle bars of the bicycle are swung left and right. The rocking bicycle for children is composed of a seat cushion, a T-shaped frame and two pairs of front and rear wheels, wherein, the rear wheels are directly arranged under the seat cushion through the shafts of the rear wheels and the front wheels are fixed under the end of the T-shaped frame through a front positioning shaft, while the ends of the T-shaped frame are also connected with the seat cushion through a positioning central shaft of handle bars. A sitting person sits on the seat cushion and two feed step on the foot cushion sleeves of the T-shaped frame, and then two hands hold the sleeves of the handle bars to swing the handle bars from left to right so that the rocking bicycle can move forwards in a left and right swinging mode. The utility model can be used as a toy, a walking tool and a skating bicycle.

Description

Children's bicycle

The utility model relates to a kind of hand-propelled vehicle, relates to a kind of manual entertainment for children Amusement vehicle or rather.

Existing children's pedal car roughly is divided into two types, and a kind of is the two-wheeled chain-type, rides in the centre, drives the trailing wheel rotation by chain gear and advances; Another kind is the three-wheel Chainless type, rides at front-wheel, by foot-operated circular movement through-coupling, drives car and advances.

Existing children's handcar as Chinese patent CN87201530 " great-jump-forward perambulator ", has adopted the crank-rocker structure principle design and has used manual manipulation, and health is along with the jump of dolly is travelled and the version of upper and lower fluctuating.Chinese patent CN88211356 " multipotency hand-car " and for example, as the hand-propelled tricycle time spent, repeat to shake to a pull and a place of cyclist's both hands T-shaped crank, the ratchet and the drive that drive rotating mechanism by chain are advanced with the wheel that ratchet is fixed on the same wheel shaft, and the cyclist rotates the sense of motion of handling car with the left and right sides extension and contraction control guide wheel of both feet simultaneously.

No matter above-described carriage for children is foot-operated or manual type, all is the chain transmission type structure basically, and the poor safety performance because vehicle body center of gravity height, volume are big because of foot-operated or shake effort, not too is suitable for young entertainment for children use again.

The purpose of this utility model is that the children for age groups provide a kind of not only safety but also labour-saving hand-propelled vehicle, only need handlebar swung just can walk, the instrument that can be used as toy or ride instead of walk, also can be used as skate automobile-used.The ability that training keeps one's balance when being at play reaches capability of reactions such as taking exercises, improve the cooperation of hand brain simultaneously.

Two pairs of front and back wheels that hand-car of the present utility model, the inside that the vehicle frame that advances and turn to and car is advanced by the body shell of Gong taking, control car wigwag motion are equipped with bearing are formed.Body shell is a seat cushion, and two trailing wheels are directly installed on the back lower place of seat cushion.Vehicle frame is T-shaped, is fixedly connected into integral body by an end of handlebar body and front frame pipe link.Two coaxial front-wheels are fixed by the location front axle in the other end below of front frame pipe link.There is handlebar location axis that seat cushion and T type vehicle frame are linked together, also is with bearing on the axis.Be with two pad footmuffs on the handlebar body, two ends are with handlebar grip.The people is sitting on the seat cushion by bus, and two ride on the pad footmuff on the handlebar body, and both hands are held handlebar grip, and the handlebar body swings.Swinging of T shape vehicle frame makes two to rise initiatively and the split rotation thereupon of the front-wheel of directional tagging, drives trailing wheel and rotates, and hand-car is swinging and advancing, and step distance strengthens gradually.

Engage the structure that embodiment accompanying drawing of the present utility model describes hand-car in detail below.

The stereoscopic scheme drawing of accompanying drawing 1. hand-cars

The general plane structural representation of accompanying drawing 2. hand-cars

The trailing wheel planar structure scheme drawing of accompanying drawing 3. hand-cars

The front-wheel planar structure scheme drawing of accompanying drawing 4. hand-cars

The three-dimensional general assembly scheme drawing of accompanying drawing 5. hand-cars

The use scheme drawing of accompanying drawing 6. hand-cars

Referring to accompanying drawing 1, body shell is that seat cushion 1 the place ahead is porose, and the back lower place is fixed with trailing wheel 21(and also has a trailing wheel, does not draw among the figure).Be with the front end that handlebar body 12 that pad footmuff 11, two ends are with handlebar grip 9 is welded on front frame pipe link 10 and become T shape support.There is the axis hole of horizontal direction at the rear of front frame pipe link 10, front wheel alignment axle 7 pass this horizontal shaft hole make two leading coaxial and fuse with vehicle frame to driving

wheel

8 and 18,17 is captive nut.The rear of front frame pipe link 10 also has the axis hole of vertical direction, vertical axis hole on hole that handlebar location axis (not marking among the figure) passes body shell 1 the place ahead and the front frame pipe link 10 is arranged, body shell 1 is connected with T shape vehicle frame, and 22 for being bearing in the support tube between body shell 1 and vehicle frame among the figure.Also be with bearing on the handlebar location axis before the body shell 1 in the square hole, vehicle frame can be swung neatly.

The people is sitting on the body shell 1 by bus, two ride on pad footmuff 11, both hands are held handlebar grip 9, trick firmly makes the left and right deflection of vehicle frame simultaneously, and front-wheel is an axle with the point of connection of vehicle body and vehicle frame, and is that fulcrum begins to rotate with a front-wheel of institute's deflecting direction, though two front-wheels are fixed with same axle 7, but their split campaigns always, always fast than the rolling speed of interior front-wheel towards the outer front-wheel of institute's deflecting direction, two front-wheels have mutual incoherent rolling speed and the effect of automatic differential are arranged.Because trailing wheel and vehicle body connect together, rotate thereby drive trailing wheel, but the path of motion difference of front and back wheel, the path of motion curvature of front-wheel is greater than the path of motion curvature of trailing wheel.

Accompanying drawing 2 is outstanding handlebar location axis 13 and body shell 1 have been described and by front frame pipe link 10, be with the annexation of the T shape vehicle frame that the handlebar body 12 of pad footmuff 11 and handlebar grip 9 forms.The hole 25 in body shell 1 the place ahead, two is fixed with locating bush bearing 4 and 6, and the effect of bearing 4,6 is the location and T shape vehicle frame is swung flexibly.23 is spider among the figure, is fixed on the bottom of front

frame pipe link

10, and 22 is support tube, and supporting vehicle body 1 also makes 10 of the front frame pipe links of vehicle body 1 and vehicle frame keep certain distance.2 is captive nut, and 3,5 is pad, and 7 is the front wheel alignment axle, and 18 is front-wheel, and 21 is trailing wheel, and 24 is hind axle.

During enforcement, keep about 10 ° angle between the last plane of front frame pipe link 10 and horizontal surface, the last interplanar of the axis of handlebar location axis 13 and front frame pipe link 10 is the angle about 80 ° promptly as among the figure, with assurance handlebar and the height ridden.

Accompanying drawing 3 shows the planar structure of hand-car trailing wheel, and two trailing wheels are not coaxial, and the hind axle 24 by separately is fixed on two supports 20, and by the support 20 at two trailing wheel 21 is fixed under the vehicle body seat cushion.Trailing wheel 21 inside be equipped be with on the hind axle 24 of 21 of 26, one supports 20 of bearing and trailing wheels overlap 28 between short, pad 29, be with on the hind axle 24 between another support 20 and trailing wheel overlap 27 between long, pad 29,30 is for fixedly using nut.

Accompanying drawing 4 shows the planar structure of hand-car front-wheel.The front-

wheel

8 and 18 of bearing 31 and minipad 32 is equipped with in two inside, be fixed on the front wheel alignment axle 7, be with cushion cover 35, vehicle frame sleeve pipe 15 and big pad 16 on the fix shaft between two-wheeled, vehicle frame sleeve pipe 15 passes the lateral aperture of front frame pipe link 10 1 ends among Fig. 1, Fig. 2.

Accompanying drawing 5 is the solid assembling scheme drawing of hand-car, and the front end that the handlebar body 12 that is with handlebar grip 9, pad footmuff 11 is welded on front frame pipe link 10 becomes T shape vehicle frame.The rear of front frame pipe link 10 has the axis hole 33 of horizontal direction, and front-wheel 18 backs that front wheel alignment axle 7 passes that inside is equipped with the front-wheel 8 of bearing, big pad 16, is enclosed within the vehicle frame sleeve pipe 15 in the axis hole, big pad 16, inside are equipped with bearing are fixing with nut 17.

Body shell is that the front end of cushion 1 has hole 25, and the rear of front frame pipe link 10 also has the hole 34 of vertical direction, and the hole internal fixation has support tube 22.Handlebar location axis 13 passes the support tube 22 in pad 14, the vehicle frame upper shaft hole 34 and is positioned at the pad 5 in hole 25 on the seat cushion 1, and locating bush bearing 6 and 4, pad 3 backs are fixed with nut 2.Trailing wheel 21 is fixed on the back lower place of body shell 1 by the hole on the support 20 with thread-forming screw 19, and 27 for overlapping between the length among Fig. 3, and 28 for overlapping between the weak point among Fig. 3.

In the accompanying drawing 6, when the people sat onboard by bus, body's center of gravity reduced, because the spacing of two front-wheels forms bigger trapezoidal areal of support less than the spacing of two trailing wheels, made hand-car almost not have the possibility of front and back overturning.When turning round or run into special ground-surface situation, hand-car may rise by wing, but because center of gravity is low, and bearing surface area greatly also can self-return, thereby the possibility of hand-car left and right sides overturning is also very little, and laborsaving, safe, recreational is by force advantage of the present utility model.

Claims

1, a kind of hand-car comprises that body shell, the control car sat for people by bus advance and the front and back wheel of bearing is equipped with in the vehicle frame that turns to and inside that car is advanced, it is characterized in that:

1), described body shell is a seat cushion;

2), described control car advances and the vehicle frame that turns to is T-shaped, captive joint with front frame pipe link one end by the handlebar body to be integral;

3), described control car advances and the vehicle frame that turns to and body shell front end link together by handlebar location axis;

4), described inside front-wheel that bearing is housed is fixedly mounted on the vehicle frame by the location front axle;

5), described inside trailing wheel that bearing is housed directly is fixed on the body shell by hind axle.

2, a kind of hand-car according to claim 1 is characterized in that being with the pad footmuff that supplies step in the middle of the described handlebar body.

3, a kind of hand-car according to claim 1 is characterized in that the other end of described T shape support front frame pipe link has the axis hole of horizontal direction and the axis hole of vertical direction.

4,, it is characterized in that described handlebar location axis passes the axis hole of vertical direction on the front frame pipe link according to claim 1 or 3 described a kind of hand-cars.

5,, it is characterized in that described location front axle passes the axis hole of horizontal direction on the front frame pipe link according to claim 1 or 3 described a kind of hand-cars.

6, a kind of hand-car according to claim 1 is characterized in that the last interplanar of axis and T shape vehicle frame front frame pipe link in the described handlebar location has the angle less than 90 °.