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Shears comprising a first and a second shear part

A scissors, end section technology, applied in the field of pruning shears or trimmers, which can solve problems such as surface erosion, noise, etc. of flat spring elements

Active Publication Date: 2018-02-23
HUSQVARNA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the cutting and opening operations, there is a sliding action between the components, which after a few operations starts to generate noise due to wear, or causes erosion of the surface of the flat spring element

Method used

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  • Shears comprising a first and a second shear part
  • Shears comprising a first and a second shear part
  • Shears comprising a first and a second shear part

Examples

Experimental program
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Embodiment Construction

[0021] Such as figure 1 The trimmer 1 shown consists of a first cutting part 3 and a second cutting part 3' made of metal and interconnected by means of hinges 7, such as screws and corresponding nuts or the like. Each of the first cutting part 3 and the second cutting part 3' includes a lever arm 5, 5' respectively, and each lever arm 5, 5' is combined with a cutting blade 11, 11' and is made of plastic or rubber. The handles 9, 9', the lever arms 5, 5' and the cutting blades 11, 11' that are used to hold and operate the trimmer 1 are arranged on opposite sides of the hub 7.

[0022] In order to store or transport the pruning machine 1 safely, it can be set in such as Figure 1 to Figure 5 Idle or closed position as stated. In order to ensure this rest or closed position, on the handle 9' of the second shearing part 3' there is arranged a coupling slide element 13 which is movable in the longitudinal direction of the handle 9'. The linked slide element 13 is made up of an ...

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PUM

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Abstract

The invention discloses a shears comprising a first and a second shear part. The invention relates to shears, in particular pruning shears or secateurs (1), comprising a first shear part (3) and a second shear part (3'). Each of the first and second shear parts (3, 3') have a cutting blade (11, 11') and a shaft or lever arm (5, 5') which are arranged at opposite sides of a pivot (7) which rotatably connects the first and second shear parts (3, 3') with each other. The shears further comprise a laminated or flat spring element (27) acting up-on the first and second shear parts (3, 3') to move the shears on to an open position. The laminated or flat spring element (27) comprises a first portion (27') fixedly arranged at or allocated to the first shear part (3) and a flexibly arranged secondportion (27'') acting on the second shear part (3'). In order to provide a movement of the laminated or flat spring element (27) on a contacting surface at the second shear part (3') without or with only very low friction, thus avoiding occurrence of noise or abrasion, the second shear part (5') comprises a rounded surface or curve at a contraction area which constitutes the touching zone betweenthe second shear part (5') and the laminated or flat spring element (27).

Description

technical field [0001] The present invention relates to the field of scissors, in particular a pruning shear or trimmer. Background technique [0002] For cutting purposes, scissors typically comprise a first cutting part and a second cutting part, both cutting parts comprising a cutting blade and a shaft or lever arm arranged on opposite sides of the hub. A hinge rotatably connects the first shear portion and the second shear portion to each other. [0003] Certain scissors, such as pruning shears or trimmers, include spring elements that provide an opening force for the first and second cutting parts to place the scissors in an open position for subsequent cutting action. From patent document DE 3426577 A1 a trimmer is known which comprises a flat spring element acting on the first and the second cutting part to move the scissors into the open position. The flat spring element is fixedly arranged with a first end portion at a first shearing portion, wherein the first end...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G3/02
CPCA01G3/02
Inventor 沃夫格·盎登克里斯丁·汪奈伟斯屈博哈德·瑞
Owner HUSQVARNA AB