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

Abstract

The invention relates to a single-machine-driven double-pendulum synchronous push-and-pull device and a method for avoiding unfavorable push and pull. The single-machine-driven double-pendulum synchronous push-and-pull device comprises a first universal joint rod, a second universal joint rod and a universal bearing ball, wherein the first universal joint rod and the second universal joint rod are connected in a rotating mode and installed in a through hole of the universal joint rod of the universal bearing ball in a clamping mode so that a cross point of a first shaft and a second shaft coincides with a center of a sliding outer wall of the universal bearing ball. The single-machine-driven double-pendulum synchronous push-and-pull device has the advantages that axes of a push-and-pull sleeve assembly is adapted to sway and change with the torque changing and the center of gravity displacing during the change process of a variable device; the overall torque balance of the variable device and the smooth movement of the center of gravity are maintained; and further the situation of unfavorable push and pull in the prior art is prevented from occurring with a feedback sleeve, a pressure switch and a feedback boss structure.

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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