Rotary bidirectional self-locking mechanism

Abstract

The invention relates to the technical field of mechanical parts, in particular to a rotary bidirectional self-locking mechanism. The rotary bidirectional self-locking mechanism is characterized in that an output shaft is fixed to a locking part, a mounting hole and an assembling groove are formed in the locking part, an elastic part is mounted in the mounting hole, two ends of the elastic part are propped against the side surface of a limiting column, and the side wall of the limiting column makes contact with the end of the elastic part and the outer side face of the assembling groove; and alimiting part is located on an input shaft, assembling teeth are arranged on the inner wall of the limiting part, and the limiting part and the locking part can be installed in a matched mode to forma locking assembly. According to the rotary bidirectional self-locking mechanism, planet wheels, a differential mechanism and other components are omitted, the structure is simplified, transmission levels are reduced, and mechanism efficiency is improved; and self-locking mechanisms of different sizes can be manufactured only by changing design parameters, the self-locking mechanism is suitable for different mechanical devices, positioning is conducted through a spring, the limiting column makes contact with the side face of the inner wall of a sleeve and the arc faces of assembling groove teeth all the time, therefore a self-locking return stroke gap is eliminated, and the safety and reliability of the self-locking mechanism are greatly improved.

Description

technical field [0001] The invention relates to the technical field of mechanical parts, in particular to a rotating bidirectional self-locking mechanism. Background technique [0002] The self-locking mechanism is a commonly used component in the existing mechanical field. With the continuous development of the mechanical structure, the demand for the rotating two-way self-locking mechanism is increasing. Especially in robots, the two-way self-locking mechanism can significantly increase the structure. security. For this reason, someone adopts an electromagnetically controlled braking mechanism as a locking mechanism. Although the purpose of real-time locking can be achieved, the size of this locking mechanism is generally large, and the energy consumption that needs to be consumed is not small, and the cost brought The rising problem cannot be ignored, so the mechanical self-locking mechanism is more popular. [0003] However, the existing two-way self-locking mechanisms...

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Problems solved by technology

For this reason, someone adopts an electromagnetically controlled braking mechanism as a locking mechanism. Although the purpose of real-time locking can be achieved, the size of this locking mechanism is generally large, and the energy consumption that needs to be consumed is not small, and the cost brought The rising problem cannot be ignored, so the mechanical self-locking mechanism is more popular

[0003] However, the existing two-way self-locking mechanisms usually use planetary gears, differentials, or a combination of gears and pawls to achieve two-way self-locking. Such two-way self-locking mechanisms are complex in structure, high in cost, and large in size. It cannot be applied to more and more miniaturized robots, and the existing two-way self-locking mechanism will produce a backlash when reverse self-locking, which is not applicable to finely controlled robots. For example, a Only the manipulator grasps the object. If there is a return gap, the small return gap after the grip may cause the object to loosen and fall, causing accidental injury

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