Limiting mechanism

Abstract

The invention relates to the field of medical instruments, and provides a limiting mechanism used for limiting a first rotating body and a second rotating body which are rotationally connected. The limiting mechanism comprises elastic positioning pins, a limiting plate, a hinge shaft and ropes. Each elastic positioning pin comprises a shaft sleeve, a pin shaft and an elastic piece, wherein one end of the pin shaft penetrates through the shaft sleeve in a telescopic mode, the elastic piece is elastically connected between the pin shaft and the shaft sleeve, and the pin shaft is installed on the first rotating body through the shaft sleeve. The limiting plate is installed on the second rotating body, limiting holes are formed in the limiting plate, and the limiting holes are formed below one rotating position of the elastic positioning pins so that the pin shafts can be connected with the limiting holes in an inserted and pulled mode. The hinge shaft is installed on the first rotating body, one ends of the ropes are hinged to the hinge shaft in a surrounding mode, the other ends of the ropes are connected with the other ends of the pin shafts, the ends, connected with the hinge shaft, of the ropes are higher than the ends, connected with the pin shafts, of the ropes, and the pin shafts are automatically inserted in the limiting holes through the elastic pieces. The limiting mechanism is convenient to operate, accurate in positioning, good in stability, simple in structure and convenient to use and popularize.

Description

technical field [0001] The present invention relates to the field of medical devices, and in particular provides a limiting mechanism, and more specifically relates to a limiting mechanism for a seat or a bed. Background technique [0002] my country has a large population, accounting for about one-fifth of the world's total population. The medical device market has huge potential. The accelerated economic development has driven the upgrading of medical service demand, and the rapid economic development has led to an overall increase in the demand for health services. The gradual opening up of the medical service market has accelerated the investment of domestic and foreign capital in China's medical service industry, thereby increasing the demand for medical devices. As a relatively important part of the medical device field, medical chairs or medical beds have broad market prospects. The fixing, adjustment and limit of medical chairs or medical beds need to be completed by...

AI Technical Summary

Problems solved by technology

[0003] The existing limit mechanism either has single function, poor reliability and stability, or complex structure, difficult maintenance and high cost

The existing limit mechanism usually uses a limit pin, and there is only one pin hole on the limit plate at a certain limit position. Ideal, that is, there is shaking or the limit pin cannot accurately enter the limit hole, and the operation is inconvenient

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