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Impact tool

一种冲击工具、工具头的技术，应用在冲击工具领域，能够解决耐久性损害等问题，达到提高耐久性的效果

Inactive Publication Date: 2014-05-28
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the mode switching mechanism described in Japanese Patent Laid-Open Publication No. 2002-292579, the force applying member is arranged outside the casing, and is affected by dust generated when the workpiece is hammered by the impact tool. , thereby compromising its durability

Method used

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  • Impact tool
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no. 1 Embodiment approach ）

[0028] Refer below Figure 1 ~ Figure 5 The first embodiment of the present invention will be described. This embodiment will be described using an electric hammer 100 as an example of an impact tool. Such as figure 1 As shown, a hammer head 119 is installed on the electric hammer 100. The electric hammer 100 makes the installed hammer head 119 perform linear motions along the long axis direction and rotate around the long axis direction to perform the processing on the workpiece Processing such as drilling or cutting. The hammer head 119 corresponds to the "tool head" in the present invention.

[0029] In general, the electric hammer 100 mainly has a body portion 101 as a “tool body” constituting the outer contour of the electric hammer 100. The hammer head 119 is detachably mounted on the tip area of ​​the body portion 101 through a cylindrical tool holder 159. The hammer head 119 is inserted into the hammer head insertion hole of the tool holder 159, and the tool holder 159...

no. 2 Embodiment approach ）

[0063] Refer below Image 6 with Figure 7 The second embodiment of the present invention will be described. This embodiment is a modified example of the holding mechanism for holding the switching knob 161 at the switched position, and other than the holding mechanism is the same as the first embodiment described above. Therefore, the same constituent parts are denoted by the same symbols, and their descriptions are omitted or simplified.

[0064] In this embodiment, between the leaf spring 181 and the lower flanged cylinder 167 of the switching knob 161, a cylindrical roller 183 as an insert member is arranged. The leaf spring 175 corresponds to the "forcing member" in the present invention, and the roller 183 corresponds to the "insertion member" in the present invention.

[0065] Such as Figure 7 As shown, the leaf spring 181 is substantially in the shape of an arc protruding rearward, and the central part in the longer direction thereof protrudes forward in a curved shape, a...

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PUM

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Abstract

It is an object of the invention to provide an improved impact tool in which a biasing member is not affected by dust. The impact tool according to the invention has a driving mechanism 120 for driving a tool bit 119, housing parts 105, 106 that form a housing space 105a in which at least part of the driving mechanism 120 is disposed, and a switching member 160 for switching a drive mode of the impact tool. The switching member 160 has an operating member 161 that is operated by a user for mode switching, and a biasing member 175 that is disposed between the operating member 161 and the housing part 106 and biases the operating member 161 so as to hold the operating member 161 in a selected position. The biasing member 175 is disposed in the housing space 105a.

Description

Technical field [0001] The invention relates to an impact tool, which makes its tool head move linearly at least along the long axis direction to perform required processing operations on a workpiece. Background technique [0002] The following impact tool is disclosed in Japanese Patent Application Publication No. 2002-292579. That is, the impact tool has a mode switching mechanism for switching the operating mode of the working head. The mode switching mechanism described in Japanese Patent Laid-Open Publication No. 2002-292579 has an operating member that switches the operating mode of the tool head under the action of the operator's turning operation, and the operating member is turned to select the desired operation In the mode, the force-applying member is positioned and maintained at the angular position it has rotated to. The urging member is composed of a leaf spring fixed on the housing, and the leaf spring engages with the groove (recess) of the operating member in a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25D11/00B25D16/00B25D17/00B25F5/00
CPCB25D16/006B25D17/26B25D2217/0096B25D2250/255B25D2250/345B25D2250/365B25D2250/381G05G5/06H01H9/06B25D2216/0023B25F5/001
Inventor 竹内一古泽正规多田祥朗
Owner MAKITA CORP