Title:
GRASS TRIMMER, TRIMMING HEAD THEREOF AND WINDING CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/158008
Kind Code:
A1
Abstract:
A grass trimmer, a trimming head thereof and a winding control method therefor, the grass trimmer comprising: a trimming head, comprising a spool and a head housing, wherein the spool is used for wrapping a trimming rope, and the head housing forms a rope-holding structure through which the trimming rope passes or around which the trimming rope wraps; a drive device, which is used to drive the trimming head to rotate to cut vegetation; an operating device, which is used for operation by a user so as to control the drive device; the operating device further comprises an operating element or a switch device, which are used to be triggered to run winding mode; a winding detection unit, which detects winding length; meanwhile, winding state is determined according to the winding length to drive the operating element or the switch device to control the same to run or stop winding mode. The grass trimmer and the winding control method therefor may effectively prevent the trimming rope from being completely drawn into the grass trimmer due to over-winding, thereby optimizing the grass trimmer winding process.
Inventors:
GUO JIANPENG (CN)
QI QIN (CN)
QI QIN (CN)
Application Number:
PCT/CN2019/074591
Publication Date:
August 22, 2019
Filing Date:
February 02, 2019
Export Citation:
Assignee:
NANJING CHERVON IND CO LTD (CN)
International Classes:
A01D34/416; B65H75/34; G05B19/048
Foreign References:
| CN106993427A | 2017-08-01 | |||
| CN203006639U | 2013-06-19 | |||
| CN104663113A | 2015-06-03 | |||
| CN204297819U | 2015-04-29 | |||
| CN206834073U | 2018-01-02 | |||
| US20170347523A1 | 2017-12-07 | |||
| US20170303467A1 | 2017-10-26 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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