Single-machine-driven double-pendulum synchronous push-and-pull device and method for avoiding unfavorable push and pull

Abstract

The invention relates to a synchronous push-pull device with double pendulum rods driven by a single machine and a method for avoiding unfavorable push-pull thereof. The first universal joint rod and the second universal joint rod together are sleeved in the universal joint rod bearing through hole of the universal bearing ball, so that the intersection point of the first rotating shaft and the second rotating shaft and the sliding movement of the universal bearing ball The centers of the outer walls coincide. The invention enables the axis of the push-pull bushing assembly to be adaptively oscillated along with the moment change and center-of-gravity displacement during the changing process of the variable device, so as to keep the overall moment balance and center-of-gravity movement of the variable device stable. In addition, the present invention also avoids the unfavorable push-pull situation in the prior art through the structure of the feedback sleeve, the pressure switch and the feedback boss.

Description

technical field [0001] The invention relates to an electric power transmission mechanism, in particular to an electric drive push-pull device for changing the working state or structural state of the device by pushing and pulling components in the device. Background technique [0002] The prior art designs and manufactures variable equipment that can change the working state or structural form, such as an automatic wheelchair bed that can be automatically converted from a wheelchair to a bed driven by electricity, and can be automatically converted from a dining table for four people to a table for six people driven by electricity Or an automatic folding table for eight people with a dining table, a multifunctional automatic desk that can be automatically converted from a desk to a bed driven by electricity, and an automatic sofa bed that can be automatically converted from a sofa to a bed by electricity. The above-mentioned variable devices often require a set of stable, du...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to avoid the deficiencies of the prior art and to propose a motor-driven double-swing bar push-pull device in which the push-pull rod can swing arbitrarily while stretching. This device can also avoid the disadvantageous push-pull situation of the prior art, and this The invention also proposes a method of avoiding the disadvantageous push and pull of the prior art

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