Grass trimmer
AssigneesNanjing Chervon Industry Co., Ltd., Chervon (HK) Limited
InventorsJianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
Life of this patent
Estimating the term…
Abstract
A grass trimmer includes a trimming head, a driving device for driving the trimming head to rotate so as to cut vegetation and an operating device for a user to operate so as to control the driving device. The trimming head includes a spool and a line holding element, the spool is used to wind a trimming line, and the line holding element is formed with a line holding structure. The driving device includes a motor. The grass trimmer has an auto-winding mode. In the auto-winding mode, the motor drives at least one of the spool and the line holding element to make the spool and the line holding element rotate relatively so that the trimming line is wound on the spool automatically.
Claims20
An operating method for winding a trimming line of a grass trimmer, the grass trimmer comprising a spool rotatable about an axis and about which the trimming line is wound, a line holding element surrounding the spool and rotatable about the axis, the line holding element having a line holding structure allowing the trimming line to pass therethrough, and a motor capable of driving at least one of the spool and the line holding element, the operating method comprising:
- passing the trimming line from the line holding element to the spool;
- and
- starting the motor to cause the spool and the line holding element to rotate relative to one another about the axis.
An operating method for winding a trimming line of a grass trimmer, comprising:
- passing the trimming line through a head housing disposed on the grass trimmer and into contact with a spool coupled to the head housing and at least partially disposed in the head housing;
- and
- starting a motor to rotate the spool and the head housing relative to each other to wind the trimming line around the spool.
A control method for controlling winding of a trimming line of a grass trimmer, the grass trimmer comprising a spool rotatable about an axis and about which the trimming line is wound, a line holding element surrounding the spool and rotatable about the axis, the line holding element having a line holding structure allowing the trimming line to pass therethrough, and a motor capable of driving at least one of the spool and the line holding element, wherein the control method comprises:
- supplying power to the motor to cause the spool and the line holding element to rotate relative to one another about the axis.
Dependencies are inferred from the claim text.