Miniature four-wheel vehicle steering mechanism

Abstract

The steering mechanism for miniature four-wheel vehicle includes steering rod assembly, steering link rod mechanism and steering gear connected to the steering rod assembly and the steering link rod mechanism. The steering gear includes shaft, shift plate and elastic connecting part, and the shift plate has one end fixed to the shaft and the other end hinged to the steering link rod mechanism via the elastic connecting part. The present invention has simple structure and easy manufacture, may be matched with elastic suspension and used to realize no-interval steering transmission. The present invention may be used widely in various kinds of miniature four-wheel vehicles and three-wheel vehicles.

Description

【Technical field】 [0001] The invention relates to a steering device, in particular to a steering device for a four-wheel vehicle. 【technical background】 [0002] The steering system of a four-wheel vehicle is a complex mechanism. In the prior art, the mechanical steering gear used by large motor vehicles and modern cars is mature in technology, reliable in operation, light and flexible in operation and has a brake device, but this steering gear is complex in structure and heavy, and the general miniature four-wheel vehicle does not possible adoption. Chinese patent 96239805.5 discloses a lever steering device. The lever is installed at the lower end of the steering rod, and the toggle block is installed in the middle of the lever linked with the steering wheel and cooperates with the lever to turn the steering wheel to drive the lever and the toggle block. , lever, the steering wheel can be realized. Although the device is simple, the steering clearance is large and the s...

AI Technical Summary

Problems solved by technology

Although the device is simple, the steering clearance is large and the steering transmission ratio is small, which will easily cause the steering wheel to appear "shimmy" when turning, and can only cooperate with the frame of the non-elastic suspension; Chinese patent 91200285.9 discloses a steering device The upper end of the steering shaft of the device is connected with the steering wheel rod through a universal joint, the lower end of the steering shaft is equipped with a steering arm, and the steering arm is hinged with the pull rod in the steering linkage mechanism. Turning the steering wheel drives the steering arm and the pull rod to realize steering. wheel steering; the structure of the device is simple, but the steering transmission ratio is small, and the parts of the mechanism are rigidly connected, and it is also easy to produce "shimming" when turning, and it can only cooperate with the frame of the non-elastic suspension; Chinese patent 91203171.9 discloses another A steering device, when the device turns, the steering wheel drives the driving sprocket, pulls the driven sprocket through the chain, and then drives the joint, connecting rod, and connecting arm to deflect the steering wheel to realize vehicle steering

The structure of this invention is slightly complicated, and there is no positioning of the steering rod between the connecting arms, so it is difficult to meet the technical requirements of the steering movement of the vehicle, which may cause side slip when the vehicle is turning and cause tire wear

Simultaneously, above invention all does not have braking device, so these steering devices lack driving safety, so should not be popularized in the miniature four-wheel vehicle as transportation means of transportation

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