Front wheel steering and fixing device for children cart

Abstract

The invention discloses a front wheel steering and fixing device for a children cart, which relates to the field of manufacturing of machines. The device comprises an injection molding piece front wheel support, a front wheel universal joint, a shaft clamp and a steel piece vertical shaft, wherein the lower end of a foreleg pipe of the children cart is inserted into an upper end mouth of the front wheel support; the upper end of the vertical shaft is positioned in the foreleg pipe; the front wheel support, the foreleg pipe and the vertical shaft are connected in series with one another through rivets in a riveted way; and the lower section of the vertical shaft passes through the vertical hole of the front wheel universal joint, then a circular groove at the lower end of the vertical shaft is buckled by the shaft clamp, and the upper and lower positions of the shaft clamp are limited. Pushing force applied to the children cart during travelling is directly transmitted from the foreleg pipe to the vertical shaft, and then acts on the front wheel universal joint through the lower section of the vertical shaft, so that two wheels on any side at the front end of the children cart can be freely rotated to arbitrary directions on the ground by taking the vertical shaft as a shaft. The device has a reliable design structure principle, so that high using reliability and high using safety of the children cart are ensured.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a front wheel steering and fixing device of a children's carriage. Background technique [0002] In the current higher-grade children's strollers and children's umbrella handle vehicles (hereinafter referred to as children's vehicles) steering and fixing devices, the upper end of the vertical shaft is inlaid and injected into the core column of the front wheel support center, and the core column is connected to the front wheel. The part of the wheel supporting the shell is a thin plastic plate. The core column above the thin plate and the vertical shaft (lower section) below the thin plate form twisting and shearing forces on the above thin plate in the form of leverage during the use of the baby carriage, which will cause the thin plate to Progressive damage or sudden fracture, especially the fracture of thin plates under special circumstances, may lead to accidents that ...

AI Technical Summary

Problems solved by technology

[0002] In the current higher-grade children's strollers and children's umbrella handle vehicles (hereinafter referred to as children's vehicles) steering and fixing devices, the upper end of the vertical shaft is inlaid and injected into the core column of the front wheel support center, and the core column is connected to the front wheel. The part of the wheel supporting the shell is a thin plastic plate. The core column above the thin plate and the vertical shaft (lower section) below the thin plate form twisting and shearing forces on the above thin plate in the form of leverage during the use of the baby carriage, which will cause the thin plate to Progressive damage or sudden breakage, especially the breakage of thin plates under special circumstances may lead to accidents that endanger the lives of children

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