SU1244001A1 - Childъs tricycle - Google Patents

Description

2. A bicycle according to claim 1, characterized in that the length of the steering rod exceeds the length of the frame tube by 0.7-1.0 times the length of the latter.

The invention relates to vehicles, and more specifically to children's tricycles with controlled rear wheels, and can be used in bicycle construction for the production of children's vehicles with unconventional controls designed to roll children 950-1120 mm in height.

The purpose of the invention is to expand the skills of children in driving game vehicles while simplifying the design.

FIG. 1 shows a schematic view of a child's tricycle, front view; in fig. 2 - the same plan view; in fig. 3 - the same, side view; in fig. 4 shows section A-A in FIG. 3 (swivel clutch knot with swivel pin).

The children's tricycle contains a single tube frame 1, a front end connected to a front fork 2 for mounting a front drive wheel 3 equipped with a pedal drive 4, and a rear end connected to controllable rear wheels 5, a steering device 6 and mounted between the front 3 and rear wheels 5 saddle 7. The frame pipe 1 is straight, has a circular cross-section along its entire length and is installed at an angle close to the straight line relative to the longitudinal axis of the front fork 2. Fork 2 is made in the form of a double moped to 8, attached by means of a connector 9 to the tube of the frame 1, the lower ends of the uprights 8 perform the function of the feathers of the fork 2 and are intended to install the hub 10 of the front wheel 3, and the upper free ends of the uprights 8 protruding upward beyond the frame 1 form a saddle holder on which the seat 7 is mounted. The pedal drive 4 is mounted in the hub 10 of the front wheel 3 and consists of a curtain shaft 11 and pedals 12.

The steering device 6 is made in the form of a rod 13, the length of which exceeds the length of the tube frame 1 by 0.7-1 the length of the latter and is telescopically mounted inside the tube frame 1 for its entire length. The front end of the tube 13 protruding from the front end of the frame tube 1 is rigidly connected to the U-shaped steering tube 14 (own 3. Bicycle according to claim 1, characterized in that the slot in the rear end of the frame tube is made with an arc length corresponding to the required angle of the steering device and the length of the groove in the swivel plate is not less than the diameter of the swivel pin.

but with a rudder) having spherical handles 15 and a crossbar 16 simulating an energy-absorbing casing, on which a pneumatic sound signal 17 is installed, made of a corrugated polymer material. The handles 15 are made of plastic and provide convenience for gripping the steering wheel in the up and down swinging motion of the steering tube 14.

At the rear end of the rod 13 of the steering device 6 is fixed by means of a threaded connection 18 a swivel plate 19 with a longitudinal through groove 20. The Novorot plate 19 is passed through a slot 21 made at the rear end of the tube of frame 1 with an arc length close to 45-60 ° and has interaction with a swivel pin 22 mounted in the middle of a two-armed lever 23 connected with its ends mounted on the ends

beams 24 rigidly connected in the center with the rear end of the frame 1, movable levers 25. The latter are fixed at the ends of the beam 24 by means of axles 27 passing through bushings 26, for example made of plastic, fixed from

drop out the bottom pins (not shown). The ends of the two shoulders lever 23 are also fixed on the free ends of the movable levers 25 by means of axles 28 fixed at the bottom with the clips. A new pin 22 is installed at an angle to the longitudinal axis of the lever 23 and, in order to enable interaction with the rotary plate 19, is inserted into the groove 20 of the guide plate 19, which is also a device that fixes the position of the rod 13 in the frame pipe 1. The groove width 20 is equal to or greater than the diameter of the pivot pin 22. The stem 13 of the steering device 6 at the front and rear ends of the tube frame 1 is installed in bearing assemblies (not shown), facilitating the transformation of the oscillatory movements of the steering tube 14 into swivel izheni rod 13 and respectively a rotary movement of the rear wheels.

At the ends of the movable levers 25, mounted on the ends of the beam 24, the rear wheels 5 are mounted.

5 of them, as well as anterior 3, are made in the form of a torus with one diametrical spoke 29 extending to the center.

Above the front wheel 3 in place of the connector 9 between the posts 8 of the front fork 2 is the flap 30 of the front wheel 3.

The saddle 7 is installed on the upper ends of the uprights 8 with adjustable height. The saddle 7 has a wide metal base and a tire made from the polymer movements of the front drive wheel 3.

The force applied by the cyclist to the steering tube 14 causes the swinging movements of this tube up and down and through the rod 13, telescopically mounted in the frame pipe 1 through the interaction of the rod 13 fixed at the rear end, passed through the slot 21 in the frame pipe 1 of the swivel plate 19 from the rotary material with elongated side fingers 22, installed in the middle of not two shoulders 23, is transmitted last to moving arms 25 with rear wheels 5 fixed to them. As a result of this interaction control is executed and the rear wheels 15 eventually bicycle. At the same time, the child develops unconventional skills in controlling the gaming vehicle, based not on turning movements of the hands along the direction of movement of the bicycle, but on balancing them along the vertical direction in the manner of swinging movements up and down.

The lower ends of the uprights 8 are equipped with decorative shock absorbers 31 made of plastic.

Children's tricycle works as follows.

Assembled according to the layout scheme and adjusted according to the child’s anthropometric data, the bicycle is set in motion by acting on the muscular forces of the child on the pedals 12 of the pedal drive 4, which transform these forces into rotational movements of the front driving wheel 3.

The force applied by the cyclist to the steering tube 14 causes the swinging movements of this tube up and down and through the rod 13, telescopically mounted in the frame pipe 1 through the interaction of the rod 13 fixed at the rear end, passed through the slot 21 in the frame pipe 1 of the rotary plate 19 s rotation finger 22, set in the middle of the two shoulders lever 23, is transmitted to the last 12

75

five

CPU r. 2

BUT

physical

fig a

Compiled by V. Ionov

Tehred I. Veres Corrector A. Zimokosov

Circulation 571 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (3)

1. CHILDREN'S THREE-WHEEL BICYCLE, comprising a single-tube frame, a front end connected to a front fork for installing a front driving wheel equipped with a pedal drive, and a rear end connected to the steered rear wheels, a steering device and a saddle mounted between the front and rear wheels, characterized in that , in order to expand the skills of children in driving game vehicles while simplifying the design, the tube of the frame is made straight along the entire length and is installed relatively longitudinal about the front fork at an angle close to a straight line, while the fork, made of two struts, in its upper part is detachably connected to the front end of the frame pipe with the formation of the tubular ends of the saddle post strut protruding beyond the frame, the steering gear is made in the form of a rod, along the length exceeding the length of the tube of the frame and installed inside it to its entire length, the front end of the shaft protruding from the pipe of the rod is rigidly connected to the U-shaped steering tube, a rotary plate is fixed at the rear end of the steering rod and a projection arranged in the rear end of the frame tube slot and a through longitudinal groove for interaction with povorot- nym _with a finger, which is mounted in the mid SS is not a two-armed lever associated with its ends mounted on the ends of bal- Q ki movable levers, on which the rear wheels are fixed, while the beam * is rigidly connected to the rear end of the frame. 2. Bike on π. 1, characterized in that the length of the rod of the steering device exceeds the length of the pipe frame by 0.7-1.0 lengths of the latter. 3. Bike on π. 1, characterized in that the slot in the rear end of the frame pipe is made with an arc length corresponding to the required angle of rotation of the steering device, and the groove length in the rotary plate is not less than the diameter of the rotary finger.