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Trimmer head with members for simplifying the loading of the cutting line

Inactive Publication Date: 2017-04-06
ARNETOLI MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention relates to a trimmer head with a spool for winding cutting line. The spool has a flange with a cutting line anchoring element that allows the cutting line to be easily and quickly anchored to the spool without the need for opening the housing. The line can be quickly replaced without positioning the spool angularly with respect to the outer housing. The trimmer head also has guides to facilitate the insertion of the cutting line in the passage holes. The technical effects of the invention are improved ease of use, efficiency, and flexibility.

Problems solved by technology

During use, the cutting line wears and breaks.
This operation is long and complex.
These systems, even if more practical than those requiring to open the housing to replace the cutting line, have some drawbacks due to the difficulty in passing the cutting line through the spool hole.

Method used

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  • Trimmer head with members for simplifying the loading of the cutting line
  • Trimmer head with members for simplifying the loading of the cutting line
  • Trimmer head with members for simplifying the loading of the cutting line

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0077]a trimmer head according to the invention will be described below with specific reference to FIGS. 1 to 6.

[0078]In this embodiment, the trimmer head is indicated as a whole with number 1.

[0079]It has a housing 3, which can comprise an upper part 3A and a lower part 3B. In the illustrated embodiment, the upper part 3A and the lower part 3B are snap-coupled together, for example by means of elastic tabs 5 which can be integral with the upper part 3A, and slots 7 which can be provided in an edge 9 of the lower part 3B of the housing 3. It should be understood that the method for coupling together the two parts or portions 3A, 3B of the housing 3 may be different than those illustrated, and that any means can be used, suitable for coupling together the two portions 3A, 3B of the housing 3, so that the two portions are axially and torsionally joined during the operation of the trimmer head.

[0080]A-A indicates a head rotation axis, around which the trimmer head rotates when it is co...

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Abstract

The trimmer head (1) includes: an axis of rotation (A-A); a housing (3); a spool (13) insertable in the housing, configured and arranged to wind a stock of cutting line (F) therearound. The spool includes flanges (13A, 13B), between which anchoring elements (15) extend to anchor the cutting line.

Description

TECHNICAL FIELD[0001]The present invention relates to the field of gardening products. More in particular, the invention relates to improvements to trimmer heads for brush cutters or the like, using a line made for example of plastic as a vegetation cutting member.BACKGROUND ART[0002]In the field of gardening equipment for use at both amateur and professional level, the use is well known of trimmer heads applied at the end of a drive shaft of a brush cutter or other equipment, to cut vegetation. Some trimmer heads of this type use a line made of synthetic resin, typically polyamide, to cut the vegetation. Usually, the line is wound inside the trimmer head to form a stock and exits from one or more holes provided in a housing of the trimmer head, inside which a spool is usually provided forming a stock of cutting line. During use, the cutting line wears and breaks. Therefore, a length of the cutting line projecting through the passage holes of the housing shall be periodically replac...

Claims

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Application Information

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IPC IPC(8): A01D34/416
CPCA01D34/4166
Inventor ARNETOLI, FABRIZIO
Owner ARNETOLI MOTOR
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