CN2512691Y - Four wheel children bicycle - Google Patents

Abstract

The utility model provides a four-wheel children bicycle, which is suitable to children for being used indoor, in public field of district, court, square and park. A frame[3] and a steering wheel type turning mechanism are respectively connected on a left and a right front wheels[1]; stepping a brace[13] and a chain wheel[14], then driving one of the left and right rear wheels[2] with a fly wheel[15] and a reversing clutch[20] on a rear transmission shaft[17] to realize the advancing and reversing; the utility model is still provided with a braking device and an adjustable seat on the rear upper part of the frame. The utility model is compact and simple in structure, smooth in line, low in cost, flexible in advancing and reversing, beautiful in appearance as well as being safe, stable and comfortable, thereby being suitable for the children.

Description

The four-wheel kiddie car

The utility model relates to a kind of four-wheel kiddie car, is suitable for the usefulness that children play in indoor, public place, sub-district, garden, square and park amusement.

In the prior art, common foot-operated perambulator has three wheeled and two wheeled two kinds.Single-wheel direction wushu structure before the two is from structure, three-wheel vehicle is preceding bikini, crank and drive wheel can not slide relative, easily injure children's lower limb, poor stability.Cart is into the scaled down version of person bicycle basically, because the center of gravity height is unsuitable for little age bracket children, and can not rides indoor.After adding a pair of jockey pulley in order to prevent to topple, children can not operate freely, lose the primary characteristic of product.

The purpose of this utility model provides a kind of children and is easy to grasp, ride freely, indoor and outdoor is all suitable, the structure of very attractive is light and handy, safe, stable, comfortable, aesthetic in appearance, just like mini F1 racing car and kart, has more the novel four-wheel perambulator of characteristics of the times.

The utility model provides a kind of four-wheel kiddie car, substantially by two front-wheels [1] and two trailing wheels [2] supporting have turn to, the chassis mount of driving, brake gear and seat constituted, a of being characterised in that of the present utility model, described vehicle frame are to be made of main car frame [3] and steering wheel frame [4].Main car frame is welded by two Z font tubing parallel longitudinals, anterior welding front-axle beam [5], and door type shape tubing [6] is being welded in the rear end.Steering wheel frame [4] is by double font tubing, and the rear portion merging is connected in Z font frame central authorities, and is separately anterior, is connected on the front-axle beam [5], and formation is faced, left and right sides side-looking is chevron shaped shape, in order to supporting fixed-direction dish [7].Z font upper back is provided with slotted hole, with install can before and after the seat [24] regulated.B, described steering hardware are by bearing circle [7], and the left and right wheels pitman arm [11] that center rocker arm [9] and the connecting rod [10] by universal-joint [8] drive installation horizontal direction on vehicle frame connect is realized turning to.C, described actuating device are by pedal [12], crank [13] sprocket wheel [14], by chain [15] but reverse slide is driven one of them trailing wheel of two trailing wheels [2] by movable sprocket (bicycle freewheel) [16] and rear propeller shaft [17] realizes moving ahead sliding with relative.When fall the back, pull clutch handle [18], by backguy, dial hairpin [19], stir and be fixed on the rear propeller shaft laterally the clutch wheel of the star-like tooth of slip band [20] and combined the realization rewind function by movable sprocket [16].D, described brake gear are made up of brake lever [21], backguy [22] and brake [23].E, described seat are made up of saddle [24] and back rest [25].

The utility model compared with prior art, its advantage and good effect are a, open vehicle frame, compact conformation, the lines flow smoothly, both embodied the essential structure of automobile dexterously, the letter refining feature that F1 racing car and kart are arranged again, complete vehicle weight is alleviated fully, realized low-cost, safety and stability is comfortable, aesthetic in appearance.B, steering hardware have adopted the steering principle of automobile.In this device, in order to make bevelled bearing circle axis and the rocker-arm link system that is in horizontality realize interlock, adopted universal-joint with steering wheel shaft and center pitman arm ways of connecting, realized the conversion between different angles moment, this also is than other four-wheel wheel steering formula perambulator part that has a clear superiority in.C, actuating device, but adopted the reverse slide follower to add the unique texture of reverse clutch.When moving ahead, pedal crank energy and rear propeller shaft slide relative.Like this can be according to the in good time outputting power of travel conditions.During reversing, power-transfer clutch can be allocated to and the follower bonding state, realize car-backing function.The combination of the two has solved in the prior art, but only adopts the reverse slide follower, can not move backward; And adopt fixedly follower, though can move backward, when moving ahead, children's both feet must move with pedal, can not have a rest in good time, easily injure the difficult problem of children's lower limb again, traveling comfort, randomness and safety in having realized riding.D, brake gear can slow down unnecessary power, have strengthened safety, reliability in riding.E, chair mounted back rest, increased intensity and aesthetic feeling, just like the roll cage of open sport car.Its installation site is in the back upper place of main car frame, and reserved the grooved hole, can move forward and backward, to adapt to the children of all ages and classes.In sum, the utility model modern design, in light weight, lift convenience, complete function, safe and reliable, comfortable stable, it is extensive to be suitable for child age and place, estimates that it will be a kind ofly to be subjected to very much children and juvenilely to like the new baby carriage of welcoming with their father and mother.

Accompanying drawing:

Fig. 1: four-wheel perambulator front view

Fig. 2: four-wheel perambulator birds-eye view

Fig. 3: front-wheel and steering hardware longitudinal section

Fig. 4: four-wheel perambulator back view (bottom)

Claims (1)

1. a four-wheel perambulator is being supported by two front-wheels and two trailing wheels substantially, have turn to, driving and brake gear, and the chassis mount of seat constitutes, and it is characterized in that:

(a) described vehicle frame is to be made of main car frame and steering wheel frame, and main car frame is welded by two Z font tubing parallel longitudinals, anterior welding front-axle beam, the rear end is being welded door type shape tubing and is being formed, steering wheel frame is by double font tubing, and the rear portion merging is connected in Z font frame central authorities, and is separately anterior, be connected on the front-axle beam, formation is faced, left and right sides side-looking is chevron shaped shape, and in order to supporting fixed-direction dish, Z font frame upper back is provided with slotted hole, with install can before and after the seat regulated

(b) described steering hardware is by bearing circle, is installed in the left and right wheels pitman arm that center rocker arm and connecting rod connect of horizontal direction on the vehicle frame by cardan shaft drive, realize turning to,

(c) described actuating device is by pedal, crank and chain-wheel, but by the chain reverse slide by movable sprocket and rear propeller shaft, driving one of them trailing wheel of two trailing wheels realizes moving ahead sliding with relative, when fall the back, pull clutch handle, by backguy, dial hairpin, stir and be fixed on the rear propeller shaft laterally the clutch wheel of the star-like tooth of slip band and combined the realization rewind function by movable sprocket.

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