A folding and stretching mechanism

Abstract

The invention discloses a folding and stretching mechanism. The folding and stretching mechanism is mounted between an upper panel and a lower panel which are hinged to each other, is used for folding and stretching the two panels to finish overturning at an angle of 0-180 degrees, and comprises a four-connecting-rod assembly and a push rod assembly, wherein a first connecting rod and a second connecting rod of the four-connecting-rod assembly are hinged to each other and are hinged to the upper panel and the lower panel; a first hinge point is formed at hinged ends of the first connecting rod and the second connecting rod; a third connecting rod is hinged to the first connecting rod and the second connecting rod through the first hinge point; a fourth connecting rod is hinged to the third connecting rod; the push rod assembly comprises a push rod and a pushing part; the push rod is connected with the fourth connecting rod and is connected with the pushing part; the pushing part is mounted on the lower panel and is used for driving the push rod to move; gaps are formed in opposite surfaces of the upper panel and the lower panel, and accommodating space is formed; and the four-connecting-rod assembly is accommodated in the accommodating space in a folded state. According to the technical scheme, the folding and stretching mechanism is simple in structure, folding and stretching actions can be finished reliably, and the folding and stretching mechanism is concealed in the two panels and occupies small space.

Description

technical field [0001] The invention relates to the technical field of plate hinged auxiliary structures, in particular to a folding and extending mechanism. Background technique [0002] Usually, when there is a joint connection between two large-area plates, a hinge is required, and a certain dynamic system is required to undertake the force support and complete the stretching and folding actions. At the same time, the folding and stretching mechanism completes the two When the blocks are folded and stretched at 0-180 degrees, it takes up a lot of space and the mechanism is relatively complicated, which is not suitable for many application environments. Therefore, there is a need for a folding and extending mechanism with a simple overall structure and a small footprint, and to address the above-mentioned problems. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, a folding and stretching mechanism is provided to reliably comple...

AI Technical Summary

Problems solved by technology

[0002] Usually, when there is a joint connection between two large-area plates, a hinge is required, and a certain dynamic system is required to undertake the force support and complete the stretching and folding actions. At the same time, the folding and stretching mechanism completes the two When the blocks are folded and stretched at 0-180 degrees, it takes up a lot of space and the mechanism is relatively complicated, which is not very suitable for many application environments.

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