Automatic coil winding grass trimmer

Abstract

The invention discloses an automatic coil winding grass trimmer. The automatic coil winding grass trimmer comprises a grass trimming head, a ratchet is arranged on the end face, close to a motor, of agrass trimming head shell, and the ratchet is provided with a tooth-shaped surface and a friction surface; when a first switch is started, the motor drives a reel assembly and a knocking cap assemblyto rotate in the first direction, a blocking piece makes contact with the friction surface of the ratchet, so that the whole grass trimming head rotates, and at the moment, a working mode is achieved; and when a second switch is started, the motor drives the reel assembly and the knocking cap assembly to rotate in the second direction, the blocking piece makes contact with the tooth-shaped surface of the ratchet, at the moment, the grass trimming head shell cannot rotate along with the knocking cap assembly, so that the knocking cap assembly is separated from the meshing with the grass trimming head shell, then the reel assembly and the grass trimming head shell form relative rotation to wind a grass trimming rope on the reel assembly, and at the moment, an automatic coil winding mode isachieved.

Description

technical field [0001] The invention relates to the technical field of garden machinery, in particular to an automatic wire-winding weeder. Background technique [0002] The mowing machine is a common garden tool, and its main principle is to use a motor or an engine to drive its mowing head to rotate at a high speed. The flexible cutting wire is wound on the winding wheel, and the winding wheel is accommodated in the mowing head, and the end of the flexible cutting wire protrudes through the hole on the mowing head shell. When the mowing head rotates at high speed, the flexible cutting The wire also rotates at a high speed to realize the cutting effect. [0003] When the mower is performing mowing operations, the mowing rope on the mowing head is gradually consumed due to wear and tear. After working for a period of time, the user needs to replace the new grass rope and wind the grass rope on the spool. With traditional trimmers, the user needs to manually turn the spool...

AI Technical Summary

Problems solved by technology

Although the technical solution disclosed in the above-mentioned patent can realize the automatic winding of the mowing head, its locking structure basically requires a manual operation of an operating part to control the locking mechanism. In its specific embodiment, the locking Mechanisms often use a movable part (such as locking pin 171) to limit the rotation of the upper end surface of the head shell (such as part 121). However, in actual use, the initial position of the upper end surface of the head shell cannot be well controlled. The components often cannot be accurately matched with the limit part on the upper end surface of the head shell at one time, which affects the operating experience, and the structure of the above technical solution is still relatively complicated, and it is inconvenient to manufacture and assemble.

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