Anti-off rotation mechanism

Abstract

The invention discloses a fall off prevention rotating mechanism. The fall off prevention rotating mechanism comprises an external thread element and an internal thread element which is connected with the external thread element in a matching mode; external threads and a tooth-shaped portion are arranged on the external thread element; and internal threads and a buckle portion are arranged on the internal thread element. When the external thread element is connected with the internal thread element in a matching mode, the external threads are in threaded connection with the internal threads and the buckle portion and the tooth-shaped portion are buckled with each other to prevent the external thread element and the internal thread element from getting loose and falling off. Accordingly, the fall off prevention rotating mechanism has the advantages of being novel in mode, reliable in connection and convenient to install and being capable of being operated through a single hand due to the fact that the tooth-shaped structure is utilized to reversely fix the threads to avoid falling off and being capable of being widely applied to gardening tools or other tools.

Description

technical field [0001] The invention relates to an anti-off rotation mechanism. Background technique [0002] The rotation function plays a pivotal role in various mechanical mechanisms, and the rotation function is mainly produced by the rotation mechanism. At present, gardening cutting tools on the market, such as lawn trimmers, generally use two parts to compress multiple parts and then fix them with screws. This kind of rotating structure is inconvenient to install. Another method is to use undercut or bayonet to fix. This kind of rotating structure has high requirements on the mold and it is difficult to release the mold. Another method is to use threaded connection, but after the thread is tightened, there is no loosening structure or clamping structure, so that during the continuous operation of the machine, the rotating structure is easy to loosen due to the vibration of the machine, resulting in Unsafe factors, and the alternating forward and reverse rotation duri...

AI Technical Summary

Problems solved by technology

At present, gardening cutting tools on the market, such as lawn trimmers, generally use two parts to compress multiple parts and then fix them with screws. This kind of rotating structure is inconvenient to install.

Another method is to use undercut or bayonet to fix. This kind of rotating structure has high requirements on the mold and it is difficult to release the mold.

Another method is to use threaded connection, but after the thread is tightened, there is no loosening structure or clamping structure, so that during the continuous operation of the machine, the rotating structure is easy to loosen due to the vibration of the machine, resulting in Unsafe factors, and the alternating forward and reverse rotation during threaded connection will also reduce the surplus of the thread and cause the connection to loosen

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