Automatic-locking single-way transmission mechanism

Abstract

The invention discloses an automatic-locking single-way transmission mechanism which comprises a ball component formed by at least one ball unit, a main shell body, an input part and an output part. At least one friction face is arranged in the main shell body. The input part is used for being in contact with the ball unit and pushing the ball unit to rotate around the center axis of the main shell body in the non-friction direction between the ball unit and the friction face. The output part is used for being in contact with the ball unit and pushing the ball unit to rotate around the center axis of the main shell body in the direction in which the ball unit and the friction face abut against each other and generate friction force. The function of single-direction automatic locking can be achieved, and compared with the prior art, the advantages of small size and the compact structure are achieved. The automatic-locking single-way transmission mechanism is used in a tubular motor, and effect is great.

Description

technical field [0001] The invention relates to an automatic locking one-way transmission mechanism, which can be applied to actuators of products such as electric lifting doors and windows, electric sunshade systems, electric projection screens and the like. The invention is particularly applicable to tubular motors. Background technique [0002] With people's continuous pursuit of high-quality life, more and more smart furniture appears in people's lives. One type of furniture, such as sunshade curtains, curtains, projector screens, etc., includes a lifting device. The device suspends a suspension part, and the lifting and lowering of the suspension part is realized under the drive of the electric mechanism. [0003] However, the above smart furniture has the following problems in the actual use process: in the process of driving the suspension parts to move up and down by the drive motor, once the power is cut off or the drive is suspended, the suspension parts have a te...

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Problems solved by technology

[0003] However, the above smart furniture has the following problems in the actual use process: in the process of driving the suspension parts to move up and down by the drive motor, once the power is cut off or the drive is suspended, the suspension parts have a tendency to fall down under their own gravity , especially when the weight of the suspension part is relatively large, the drop phenomenon is more obvious, resulting in the consequence that the above-mentioned suspension parts of the smart furniture cannot achieve stable positioning

[0005] However, the above-mentioned spring-loaded brake has the following problems: the spring will accelerate its fatigue during frequent use, weaken its elastic coefficient, and slippage will occur, resulting in brake failure; Displacement space. Therefore, at the beginning of the design of this brake, it is necessary to reserve a certain retreat space for the spring, which is not conducive to the reduction of the overall volume of the brake. At the same time, the internal structure of the brake is not compact enough, and the internal parts are prone to loosening, which affects the response of the brake. Sensitivity; In addition, the overall structure of the above-mentioned spring-loaded brake is complex, the material requirements are high, and the assembly is difficult, which is not conducive to cost control

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