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impact tool

A technology of impact tools and tools, applied in the direction of portable impact tools, striking tools, manufacturing tools, etc.

Active Publication Date: 2016-09-28
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electric hammer recorded in the Japanese Invention Patent Publication No. 2007-513784 has room for improvement in the anti-vibration aspect of the handle.

Method used

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Experimental program
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no. 1 Embodiment approach

[0047] Next, refer to Figure 1 to Figure 10 Embodiments of the present invention will be described in detail. In this embodiment, an electric hammer which is an example of an impact tool is used for description. Figure 1 ~ Figure 4 shows the appearance shape of electric hammer 100, Figure 5 The internal structure of the electric hammer 100 is shown in the sectional view of . The electric hammer 100 according to the present embodiment is an impact tool that attaches a hammer head 119 to the front end region of the main body 101 and makes the attached hammer head 119 impact along the long-axis direction to peel off a workpiece such as concrete. The hammer head 119 is attached to the main body 101 in a freely attachable and detachable manner via a cylindrical tool holder 131 . The hammer bit 119 is inserted into the drill insertion hole of the tool holder 131 and held in a state where relative rotation in the circumferential direction is restricted. The hammer head 119 cor...

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PUM

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Abstract

An object of the invention is to provide an impact tool improved in vibration-proofing structure of a handle. A representative impact tool has a tool body and handle. The handle has a handle body and pair of grips that extend in a direction crossing an axial direction of a tool accessory, designed to be held by user's right and left hands. The handle body has a first part to which the grips are connected in a fixed manner and a second part that is connected to the tool body in a fixed manner. The first part is supported against the tool body via an elastic member and is allowed to move with respect to the tool body and the second part while being biased by an elastic force of the elastic member. A current supply cable, supplying current to a motor, is installed on the second part.

Description

technical field [0001] The present invention relates to an anti-vibration technology of an impact tool, which is impacted at least along the long-axis direction by a tip tool, and performs predetermined beating work on a workpiece to be processed. Background technique [0002] Japanese Invention Patent Publication No. 2007-513784 discloses an electric hammer which has a pair of handles held by the operator's left and right hands respectively. The electric hammer has a cylindrical cover surrounding the tool main body, and a pair of handles extending in a direction intersecting the striking axis of the electric hammer are provided on the cylindrical cover. The cylindrical cover can move relative to the tool main body along the impact axis direction by a rotating body device composed of a plurality of rollers, and is connected to the tool main body by an elastic member. [0003] [Reference 1] Japanese Invention Patent Publication Publication Special Form No. 2007-513784 [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25D17/00
CPCB25D17/043B25D2211/003B25D2211/068B25D2222/57B25D2250/041B25D2250/371B25D17/24
Inventor 三轮正夫古泽正规
Owner MAKITA CORP