Grass trimmer
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsQi Zhang, Zhifeng Wang
Life of this patent
Estimating the term…
Abstract
A grass trimmer includes a trimmer head, a driving device, and an operating device. The trimmer head includes a spool and a head housing. The driving device includes a motor. The grass trimmer has an automatic winding mode in which the motor drives the spool or the head housing to cause the spool and the head housing to rotate relatively so as to wind the trimmer line onto the spool. The grass trimmer further includes a winding switch for controlling the automatic winding mode to be enabled, an operating assembly for controlling the winding switch to be opened, and a locking mechanism. When the operating assembly is operated, the locking mechanism is able to lock the head housing or the spool and the winding switch is triggered so as to cause the head housing and the spool to rotate relatively.
Claims14
A grass trimmer, comprising:
- a trimmer head comprising a spool and a head housing, wherein the spool is configured for a trimmer line to wind around and the head housing is configured to accommodate at least part of the spool;
- a driving device configured to drive the trimmer head to rotate around an axis, wherein the driving device comprises a motor having an output shaft, and the grass trimmer has an automatic winding mode in which the motor is configured to drive at least one of the spool or the head housing to cause a relative rotation between the spool and the head housing so as to wind the trimmer line onto the spool;
- an operating assembly comprising an operating portion operated by a user;
- a winding switch configured to control the automatic winding mode to be enabled when the operating portion is operated;
- and
- a locking mechanism, wherein, when the operating portion is operated, the operating assembly triggers the winding switch,
- wherein the operating assembly and the locking mechanism are mechanically coupled such that when the operating portion is operated, movement of the operating portion is mechanically transmitted to the locking mechanism to cause the locking mechanism to move into contact with and to lock at least one of the head housing or the spool.
Dependencies are inferred from the claim text.