GRASS TRIMMER AND CORD DELIVERING METHOD OF GRASS TRIMMER

摘要

The invention provides a grass trimmer and a cord delivering method for a grass trimmer, the grass trimmer comprises an extending rod, an housing, a grass trimming head, a handle, a main motor and a main switch, wherein the grass trimming head comprises a base, a cap and a spool having a first state relative static with the base, and the grass trimmer further comprises a cord delivering mechanism; the cord delivering mechanism comprises a cord delivering electronic switch independent of the main switch and a control device; and the cord delivering electronic switch operably electrically controls the control device to enable the spool to be in a second state capable of generating a rotary speed difference with the base. An operator does not need to interrupt work of the grass trimmer and can timely pay off required and the cord delivering operation is simple and convenient.

主权项

1. A grass trimmer, comprising:
an extending rod extending longitudinally; a housing arranged at one end of said extending rod; a handle arranged on said extending rod and spaced from said housing by a distance; a grass trimming head connected to said housing, wherein said grass trimming head comprises a base, a cap matched and connected to said base, and a spool arranged between said base and said cap; said spool has a first state static relative to said base; a main motor driving said grass trimming head to rotate around an axis; a main switch controlling said main motor; a cord delivering mechanism, wherein said cord delivering mechanism comprises a control circuit electrically connected to said main motor, and said control circuit is used for controlling said main motor to be converted between a normal working speed and a cord delivering speed; said control circuit comprising a cord delivering electronic switch independent of said main switch, said cord delivering electronic switch operably electrically controls said control circuit to enable said spool to be in a second state capable of generating a rotary speed difference relative to said base.