Grass trimming head and grass trimmer having the same
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsJianpeng Guo, Toshinari Yamaoka, Fangjie Nie, Qi Zhang, Zongjing Li, Fei Wang, Lanxi Xu
Life of this patent
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Abstract
A grass trimming head includes a housing assembly and a spool. The housing assembly is formed with a housing cavity and an outer aperture for allowing a cutting line to be inserted from an outside of the housing assembly into the housing cavity. At least a portion of the spool is arranged inside the housing cavity, and the spool is rotatable with respect to the housing assembly about a central axis. The spool is formed with an inner aperture for allowing the cutting line to be inserted into the spool or a clamping portion configured to fix the cutting line.
Claims17
A power tool, comprising:
- an output assembly for outputting power;
- a motor configured to drive the output assembly;
- a power source device configured to power the motor;
- a support member configured to support at least one of the output assembly, the motor, or the power source device;
- wherein the support member comprises a carbon fiber material, a ratio of a density of the support member to a tensile strength of the support member is greater than or equal to 4.5 kg/(m3·MPa) and less than or equal to 15 kg/(m3·MPa).
A power tool, comprising:
- an output assembly for outputting power;
- a motor configured to drive the output assembly;
- a power source device configured to power the motor;
- and
- a housing configured to accommodate at least part of the motor;
- wherein at least one element of the power tool comprises a carbon fiber composite material, and a ratio of a density of the at least one element to a tensile strength of the at least one element is greater than or equal to 4.5 kg/(m3·MPa) and less than or equal to 15 kg/(m3·MPa).
Dependencies are inferred from the claim text.