A mower gear box with a grass cutting head that is easily removed and replaced

By incorporating a limit cover and a ratchet mechanism, the lawnmower gearbox enables tool-free installation and removal of the mowing head, solving the problems of inconvenient operation and tool loss in existing technologies, and providing a convenient solution for field operations.

CN116255444BActive Publication Date: 2026-06-19ZHEJIANG WELL SHINE IND & TRADE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG WELL SHINE IND & TRADE CO LTD
Filing Date
2023-03-03
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Existing lawnmower gearboxes require tools to install and remove the trimmer head, which is inconvenient and poses a risk of tool loss, especially when operating in the field.

⚗Method used

A tool-free gearbox structure for a lawnmower was designed. The installation and removal of the mowing head are made convenient through a limit cover and a ratchet mechanism. The rotation of the gear shaft is restricted and released by the cooperation of the limit pin and the ratchet.

🎯Benefits of technology

It enables easy installation and removal of the grass trimmer head without tools, saving time and effort, avoiding the risk of losing tools, and is especially suitable for field operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a lawnmower gearbox with an easy-to-disassemble and assemble trimmer head. It includes a gearbox body, a limiting cover fitted around the gear shaft at the lower part of the gearbox body, and the gear shaft connected to the limiting cover via a spline. The gearbox body has a first through hole extending from top to bottom through the gearbox body. The limiting cover has a limiting hole corresponding to the first through hole, and a limiting pin that can extend into / remove from the limiting hole is located within the first through hole. The bottom of the gear shaft has an external thread for connecting the trimmer head. This invention allows for the disassembly and assembly of the trimmer head without the need for any tools, making operation convenient, time-saving, and labor-saving.
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