Rotational positioning device with smooth movement

Abstract

A rotary positioning device with a uniform motion sequence, comprising a fixed part (1) and a rotating part (2), wherein the rotating part (2) is pivotably connected to the fixed part (1), characterized in that it further comprises a pivot arm (3) and a positioning plate (4), wherein one end of the pivot arm (3) is rotatably connected to the rotating part (2) and a guide pin (5) is arranged at the other end, wherein the positioning plate (4) is fixedly mounted on the fixed part (1) and a guide groove (41) is formed in the positioning plate (4), wherein the guide pin (5) projects into the guide groove (41) and can slide along the guide groove (41), wherein the guide groove (41) comprises at least a first deflection section (411), a positioning section (412) and a second deflection section (413),wherein, after the guide pin (5) has slid along the first deflection section (411) when the rotating part (2) is pivoted, the guide pin (5) can slide into the positioning section (412) and form a limit fit, and wherein, when the rotating part (2) is driven again by an external force, the guide pin (5) can slide from the positioning section (412) into the second deflection section (413) to effect unlocking.

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