Hedge trimmer

A hedge trimmer and hedge trimming technology, which can be used in agricultural machinery and implements, gardening, agriculture, etc., and can solve the problem that the hedge trimmer is not suitable for use.

Inactive Publication Date: 2014-05-07
HUSQVARNA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hedge trimmers are often not suitable for cutting larger branches

Method used

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  • Hedge trimmer

Examples

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Embodiment Construction

[0027] The hedge trimmer 1 includes a main body housing 2 that houses a motor 3 and a gear box 4. The gearbox 4 includes an input shaft fixed to the output shaft of the engine, and the output shaft of the engine is fixed to or forms a part of the engine rotor. The output end of the gearbox is connected to a linkage. This arrangement is such that as the engine rotates, the linkage device moves forward toward one end of the housing and moves back to its starting position. As the engine continues to rotate, this movement is continuously performed so that the linkage device performs reciprocating motion.

[0028] The gearbox includes a two-speed planetary gear, which allows two different gear ratios to be selected between the input shaft and the output shaft of the gearbox. One gear ratio is approximately 30 times higher than the other gear ratio.

[0029] Two cutting blades 5, 6 are provided, one above the other. Each edge of each blade has a row of teeth, and the teeth of the two...

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PUM

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Abstract

A hedge trimmer (1) comprises an electric motor (3) and at least two cutting blades (5,6), each blade comprising at least one row of teeth with the motor being connected to at least one of the blades so that rotation of the motor (4) produces a movement of at least one of the blades relative to the other, a first user operable switch (10) for operation of the hedge trimmer blades and a second user operable switch (11) which enables a user to select between at least two operating modes of the hedge trimmer, the two modes comprising a hedge trimming mode in which operation of the first user operable switch causes a reciprocal motion of the at least one blade, and a secateur mode in which operation of the switch causes a single cutting cycle to be performed. A two ratio gearbox may be provided to enable the blades to move at a lower speed and with higher torque when in the secateur mode compared with the hedge trimming mode.

Description

Technical field [0001] The present invention relates to a hedge trimmer, and to a hedge trimmer with improved operation. Background technique [0002] Known are manual and engine driven hedge trimmers. Although many gardeners still use manual trimmers, motor-driven trimmers can cut faster and do much less work on any assigned hedge trimming task. The hedge trimmer is ideally suited for cutting large thin branches and flowers to make the hedges tidy after trimming. They are less suitable for cutting larger branches, and performing any such attempt will usually cause the pruner to "bounce" off the branches. If large branches can be in the area between the cutting blades of the hedge trimmer during use, the trimmer may usually get stuck. For this reason, pruning machines are usually provided with blades that have a shape that particularly prevents attempts to cut large branches. [0003] In situations where large branches need to be cut, hedge trimmers are usually not suitable. G...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G3/053
CPCA01G3/053
Inventor 乌尔里克·耶耶尔瓦尔斯特凡·瓦尔弗里德松
Owner HUSQVARNA AB
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