CN2079152U

CN2079152U - Tricycle child cart

Info

Publication number: CN2079152U
Application number: CN90208337.6U
Authority: CN
Inventors: 威海波
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-06-12
Filing date: 1990-06-12
Publication date: 1991-06-19

Abstract

The utility model relates to a tricycle for children. A frame is provided with a chair. A steering wheel is arranged in front of human chest. The utility model speeds down by rope transmission of pulleys, and controls a front wheel to steer. The frame is hinged with a driving rocker and a recoil rocker. The driving rocker is connected with one end of a link chain. The link chain passes round fly wheels on a rear shaft. The other end is connected with the recoil rocker. Feet step on pedals at the lower part of the driving rocker, and drive the tricycle for children going ahead at the same time. The recoil rocker draws the driving rocker to recoil by spring force when legs go back. The tricycle for children has advantages of volatile stepping, reliable braking, novel direction alteration, and interesting operation.

Description

Tricycle child cart

The utility model is about a kind of toy tricycle.Its keystone configuration is made up of vehicle frame, front fork, wheel, seat, wheel steering mechanism, fork driver train and hand-operated brake device.

Traditional toy tricycle turns to handlebar control.The deflection angle of handlebar and front-wheel is the synchrodrive of 1:1; The driver train of this car is at front-wheel axletree two ends a crank throw step tread plate to be installed respectively.Children's both feet are made garden Zhou Yundong around the front-wheel axial line during driving.Pin one stops to scrunch, and wheel promptly stops operating.

When driving this car, the human body posture is subjected to the influence of front wheel steering angle bigger, outer handle and step tread plate are all away from human body when turning to, internal handle and step tread plate are again near human body, front-wheel axis and hip joint, human body left and right sides line are not parallel simultaneously, when deflection angle surpassed 20 °, the children that drive just felt very awkward even can not advance by treadmill.In addition, the pick-up point of three wheels of this car is equicrural triangle and distributes, because the children's that drive both feet must contact on the stretcher that is installed on the front axle, point is nearer apart from the summit of this isoceles triangle shape so the children's torso center of gravity is hung down, therefore lateral stability is bad, easily overturns.

The purpose of this utility model is the toy tricycle that a kind of novelty is provided for numerous children, allows the children that drive can fully imitate automobilist's driver behavior, improves children's interest with this, but can take exercises and training skills by playing.

For this reason, the utility model toy tricycle is provided with the backrest seat at the vehicle frame rear portion, is provided with bearing circle in the position, front that is fit to children's stature, stirs bearing circle and can drive front-wheel steering than transmission device by reduction of speed; Be provided with step tread plate in the seat front, children's both feet are stepped on step tread plate synchronously back and forth song and are stretched and drive to move ahead; In the fork driver train, also can make the driving transmission divide retaining to change by the hook position that changes chain; Car is when advancing, and people's pin can stop and have a rest temporarily, and car still can free-wheel; Be provided with brake gear specially for controlling to stop, it is to be controlled by the handle that is located at the seat right side.Though the pick-up point of three wheels of this novel three-wheeled perambulator also is to be equicrural triangle to distribute, but drive this car, the human body posture is not subjected to the influence of front-wheel steering angle, and gravity center of human body's vertical line can be fully near the rear axis line, lateral stability is good, is difficult for overturning.

The utility model is realized by following embodiment: the fixed deflection sheave of the shoulder of front fork, the rotating shaft of front fork are packed in the axle sleeve of vehicle frame front end.Along the direction of pointing to the motorist front longitudinal axis is installed at this axle sleeve rear side, the end of this longitudinal axis ring-type bearing circle that is rigidly connected.The front end of the longitudinal axis has steel cable to twine some circles thereon.Two terminations of steel rope are walked around respectively behind the leading sheave of the vehicle frame left and right sides again around to deflection sheave, are strained by spring at the deflection sheave front end.When rotating with the fixed longitudinal axis of bearing circle, by the frictional transmission steel rope, steel rope affects deflection sheave to rotate again and has realized front-wheel steering.Its transmitting ratio is deflection sheave and longitudinal axis diameter ratio under nothing is skidded situation, longitudinal axis diameter is little, and the deflection sheave diameter is big, then can realize turning to than handling with reduction of speed.

Driver train of the present utility model is to link a driving pendulum rod and a return fork respectively by the front and back order on chassis side rail, and its swinging plane all is parallel to chassis side rail.Each step tread plate about be equipped with the driving pendulum rod lower end.Between step tread plate and last twisted point, be provided with several holes, the end that any hole can the hook chain.The other end of chain is walked around the flywheel on the rear axle and is engaged with the back and is connected with the lower end of return fork.Cover is being worn a torque spring on the bearing pin of return fork and vehicle frame hinge joint, makes the return fork do the time spent and always be flapped toward preceding end position removing external force, and the traction by chain also just makes driving pendulum rod always at it self back end position.The hook position of conversion chain on driving pendulum rod just can change the transmitting ratio of driver train.This advantage makes the utility model toy tricycle enlarge range of use.

Brake gear of the present utility model is to constitute like this: two strand supportings are installed on the back vent of vehicle frame, the rotating shaft of brake linkage penetrates in it, the upper end of brake linkage has constituted brake handle, the lower end has connected brake shoes, staff is pressed brake handle, then brake shoes is pressed in by leverage and has realized drag on the trailing wheel, and staff has spring that it is resetted during not according to brake handle.

The utility model all is equipped with antifriction-bearing box in three wheels and rear axle.Wheel adopts air-inflation tyre, thereby it is brisk to drive a vehicle, and inertia is big.

4 in the utility model accompanying drawing, wherein:

Fig. 1 is the lateral plan (wherein having removed the left side back vent of left side trailing wheel and vehicle frame) of the utility model toy tricycle;

Fig. 2 is the birds-eye view of the utility model toy tricycle;

Fig. 3 is the front elevation of the utility model toy tricycle;

Fig. 4 is the A-A section partial enlarged drawing among Fig. 1.

The contrast of piece number and title is as follows among the figure:

1, front-wheel.2, front fork.3, spring.4, deflection sheave.5, steel rope.6, leading sheave.7, vehicle frame.8, step tread plate.9, driving pendulum rod.10, the longitudinal axis.11, bearing circle.12, brake handle.13, seat.14, lever shaft.15, brake shoes 16, return fork.17, chain.18, flywheel.19, trailing wheel.20, bearing pin.21, torque spring.

More than 4 accompanying drawings are embodiment of the present utility model.

Be described further below in conjunction with accompanying drawing:

When children are sitting on the seat (11), both hands are held and during steering wheel rotation (11), 10. the longitudinal axis also rotates synchronously.5. the steel rope that twines on it is walked around leading sheave and is 6. 4. gone up and 3. strained by spring around deflection sheave again.Thereby 4. deflection sheave drives front-wheel with the 2. fixed one of front fork and 1. turns to.Deflection sheave diameter and the diameter ratio of the longitudinal axis that section Cylinder of 10. the going up lay winding wire ropes transmitting ratio that determined steering hardware 4..This ratio is advisable with 3 to 10.The ratio of the rotational angle of bearing circle (11) and front-wheel steering angle 1. just is that 3 to 10 reduction of speed compares transmission like this.

Children are sitting on the seat (13), and bipod is stepped on respectively 8. to go up forward at step tread plate and pedaled out.Driving pendulum rod 9. forward the rotation chain (17) that drives hook on it travel forward, drive the flywheel (18) that is meshing with chain (17) simultaneously and rotate, the back axis mechanism by known manual tricycle drives one of two trailing wheels and rotates car is moved ahead.Meanwhile the other end of chain (17) hauls return fork 916) rotation backward, simultaneously also with the torque spring that covers on the bearing pin (20) ⁽²¹⁾The displacement (see figure 4).Return fork (16) rotation and affect chain (17) forward under the effect of torque spring (21) when both feet draw in makes the crown reversing of the flywheel (18) that is being engaged with, and also spurs 9. rotation backward of driving pendulum rod simultaneously.In this course, toy tricycle is a free-wheel, and children's legs and feet Qu Huihou can do next time again and scrunch.Owing to 9. go up in driving pendulum rod, be provided with position, a plurality of hole along the bar length direction, the user can change the hook position of chain (17) voluntarily, has so promptly changed the rotation ratio of driver train.

When needs stop, press the torsion pass effect of brake handle (12) with the right hand by lever shaft (14), two brake shoes (15) are pressed in respectively on the trailing wheel of the left and right sides simultaneously, realized drag.

The advantage of the utility model toy tricycle is to step on that row is brisk, brake is reliable, lateral stability is good, the wide children of making of the scope of application can imitate the action that drives a car visually. Improve the interest that children play with this, not only can take exercises but also can train, improve the ability of child motor concerted reaction.

Claims

1, a kind of toy tricycle, its structure mainly is made up of front fork, vehicle frame, wheel, seat, steering hardware, driver train and brake gear, it is characterized in that: the bearing circle (11) that drives front-wheel steering is housed on 7. at vehicle frame; Vehicle frame 7. go up link respectively a driving pendulum rod 9. with a return fork (16); Each step tread plate 8. about be equipped with driving pendulum rod lower end 9., driving pendulum rod has several holes on 9., one of them hole hook an end of chain (17), after the other end of chain (17) is walked around flywheel (18) and is engaged with, is connected with the lower end of return fork (16); 7. seat (13) is installed at vehicle frame on, right-hand side at seat (13) is provided with a brake handle (12), brake handle (12) is captiveed joint with lever shaft (14), lever shaft (14) is bearing in vehicle frame back vent position 7., and captives joint with left and right sides brake shoes (15) respectively.

2, toy tricycle as claimed in claim 1, it is characterized in that: front fork rotating shaft is 2. packed vehicle frame into 7. in the axle sleeve of front end, at this axle sleeve rear side, the longitudinal axis that fixed a bearing circle (11) is installed 10., longitudinal axis front end 10. has steel cable 5. to twine some circles thereon, steel rope two terminations 5. walk around respectively vehicle frame 7. the leading sheave of the left and right sides 6. again around 4. going up to deflection sheave, 3. strained by spring at deflection sheave front end 4., 4. deflection sheave captives joint with front fork shoulder 2..