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Operation tool

A tool and tool head technology, applied in the direction of striking tools, manufacturing tools, light impact tools, etc.

Inactive Publication Date: 2012-05-02
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, there is still room for improvement in the assembly of the conventional electric hammer for the vibration damping mechanism.

Method used

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  • Operation tool
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] Hereinafter, an embodiment of a rotary hammer as an example of the impact tool of the present invention will be described with reference to the drawings.

[0052] Such as figure 1 As shown, in a nutshell, the electric hammer 101 of this embodiment is mainly composed of the following parts, that is, it includes: a main body 103 that forms the outer contour of the hammer 101; a toolholder 137 that Connected to the front end region (left side in the figure) in the long axis direction of the main body 103; hammer head 119, which is mounted on the tool holder 137 freely; On the other end in the direction of the long axis of the portion 103 (the right side in the figure). The main body portion 103 corresponds to a "tool body" in the present invention, and the hammer head 119 corresponds to a "tool head" in the present invention. The hammer head 119 is held in a state where relative reciprocation is possible in the long axis direction (the long axis direction of the main bo...

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PUM

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Abstract

The invention is an object of the invention to provide a technique that contributes to further improvement of an impact tool. A representative impact tool (101) includes a motor (111), a tool body (103) that houses the motor, a dynamic vibration reducer (151) and a driving mechanism part (171) that is driven by the motor (111) and forcibly drives the dynamic vibration reducer (151) by applying anexternal force other than vibration of the tool body to the dynamic vibration reducer, during hammering operation. At least one of the dynamic vibration reducer (151) and the driving mechanism part (171) is mounted to the tool body (103) in a form of an assembly into which at least one of a plurality of component parts forming the dynamic vibration reducer (151) and a plurality of component partsforming the driving mechanism part (171) are assembled in advance, namely that being assembled to the tool body as assembly parts A1, A2.

Description

technical field [0001] The present invention relates to a vibration damping technology of an impact tool such as a hammer or a hammer drill that drives a tool head linearly. Background technique (Background Technology 1) [0002] Japanese Patent Laid-Open No. 2003-11073 discloses a structure of an electric hammer provided with a vibration damping mechanism. In this conventional electric hammer, there is a dynamic vibration absorber as a device for damping vibration in the long-axis direction of the hammer bit (harm bit) accompanying the hammering operation. low vibration. The dynamic vibration absorber has a counterweight that can move linearly under the action of the force generated by the coil spring, and the weight of the hammer during the hammering operation is reduced by moving the counterweight in the direction of the long axis of the front tool. vibration. [0003] In conventional rotary hammers, the counterweight and the coil spring are disposed in a space havin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25D17/24B25D17/00B25D11/00B25F5/00
Inventor 生田洋规仲村真杉山义夫荒川琢雄三轮正夫鹫见卓也
Owner MAKITA CORP