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Automatic line feed for trimmer

A trimmer, thread trimmer technology, applied in applications, harvesters, agricultural machinery and implements, etc., can solve the problem of not being suitable for close-up and accurate trimming, increasing the cutting height of the trimmer head, etc.

Active Publication Date: 2018-06-08
HUSQVARNA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the buttons protrude from the trimmer head, this arrangement increases the cutting height of the trimmer head and is therefore not suitable for close and precise trimming

Method used

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  • Automatic line feed for trimmer
  • Automatic line feed for trimmer
  • Automatic line feed for trimmer

Examples

Experimental program
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Embodiment Construction

[0032] The disclosed embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown. The invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; The range fully conveys to those skilled in the art. Throughout, like numerals refer to like elements.

[0033] As will be obvious to the skilled person, all indications of rotation speed and duration are given as examples and may be varied in many different ways. Changes can be to individual entities as well as groups of entities and can be absolute or relative.

[0034] Figure 1A A perspective view of an exemplary embodiment electric trimmer 10 is shown. The trimmer comprises a power source 4, which in the example of an electric trimmer is an electrical power source, such as a battery or a grid connector for providing power to an electric motor 2 arranged to rotate a...

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PUM

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Abstract

A trimmer head (1) arranged to be driven to rotate a trimmer line (3), wherein the trimmer head comprises a housing (1a, 1b) and an inner body (1c) connected to a trimmer line spool (13, 39), the trimmer head being characterized in that the inner body is arranged to be movable relative the housing so that a trimmer line spooled around the trimmer line spool is released and to be pulled out by a centrifugal force caused by the rotation of the trimmer head, thereby allowing feed of the trimmer line. A trimmer (10) comprising a trimmer head according to above, wherein the trimmer further comprises drive means (2, 4) for driving the trimmer head to rotate and wherein the trimmer is arranged to cause a relative movement of the inner body relative the housing by changing the rotation speed of the trimmer head.

Description

technical field [0001] The present application relates to a method for feeding a trimmer with trimmer line, a trimmer head and a trimmer, and in particular to automatic feeding of trimmer line for an electric trimmer. Background technique [0002] Electric trimmers operate by turning or spinning a line or lines at high speed. When the thread touches grass or other vegetation, the grass is mowed by the thread. This physical interaction between the grass and the trimming line causes the trimming line to wear down and the line often shortens over time. In order to provide a uniform cutting operation, more wire needs to be fed. [0003] The prior art solution is to provide the trimmer with a button which is arranged on the underside of the trimmer head. When the operator wants to feed more thread, he can do so by gently pushing the trimmer head onto the ground, thereby pushing the button that enables the supply of thread. [0004] Such solutions are shown, for example, in US...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01D34/416
CPCA01D34/416A01D34/4162A01D34/4163A01D34/4161
Inventor 约翰·哈伦多夫托马斯·维克曼斯特凡·库尔贝里里卡德·斯科格瓦德
Owner HUSQVARNA AB