Cover device for a power tool

Inactive Publication Date: 2006-03-30
HILTI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019] Advantageously, the engaging-from-behind elements are formed integrally with the remaining part of the cover device as a one-piece part, i.e., by deformation or partial removal of the material that forms the cover device. Thereby, manufacturing costs are reduced, and a stable locking element is produced.
[0020] Advantageously, the

Problems solved by technology

However, the manufacturing costs of the device of DE 94 03 777 are relatively high.
In addition, the means that provides for the forcelocking connection of the cover device on the power tool, such as, e.g., clamp scr

Method used

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  • Cover device for a power tool
  • Cover device for a power tool
  • Cover device for a power tool

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0036]FIGS. 3a-3c shows the engaging-from-behind elements 24. The elements 24 have, at their respective free ends, two hook-shaped elements 32 which are formed at the tangential ends of the bearing means 22. The hook-shaped elements 32, together with the engaging-from-behind elements 24, are formed, together with the bearing means 22, as a substantially formstable single piece. In order to be able to displace the engaging-from-behind elements 24 away from each other to increase the distance a therebetween for hooking the cover device 20 on the limiting edges 26 of the shielding member 12 and for removing the cover device 20 off the shielding member 12, there is formed, in the protective disc 30, a radial slot 34. The slot 34 permits to deform, the bearing means 22 during mounting of the cover device 20 on the shielding member 12 and dismounting of the cover device 20 from the shielding member 12. The slot 34 provides for a radial pivotal movement of the engaging-from-behind elements...

second embodiment

[0038]FIGS. 4a-4c show an alternative, second embodiment of the engaging-from-behind elements 24. According to this embodiment, the engaging-from-behind elements 24 are formed on a locking nose 38 of an elastically resilient locking element 40. The locking element 40 has a spring arm 42 that is formed by two tangentional, extending parallel to each other, cut-ins 44 provided at respective tangential ends of the bearing means 22. The cut-ins 44 provide for elastic pivotal movement of the engaging-from-behind elements 24 in the radial direction relative to the bearing means 22 in order to change the distance a therebetween.

[0039] With both embodiments of the engaging-from-behind elements 24, the cover device 20 can be rapidly pinned on the shielding member 12, without using any additional tools.

[0040] In both embodiments, the engaging-from-behind elements 24 engage the limiting edges 26 in order to secure the cover device 20 on the shielding member 12 in the tangential and radial dir...

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PUM

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Abstract

A cover device for partially covering a front, in an axial direction, side of a disc-shaped working tool (10) of a power tool includes a bearing element (22) securable on the shielding member (12), which partially radially covers the working tool (10), and having a bearing surface (28) abutting, at least regionwise, an outer surface (14) of the shielding member (12), a protective disc (30) extending substantially transverse to the bearing surface (28) of the bearing means (22), and engaging-from-behind elements (24) provided at opposite tangential ends of the bearing surface (28), respectively, with at least one of the engaging-from-behind elements (24) being elastically pivotal in a radial direction.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a cover device for partially covering a front, in an axial direction, side of a disc-shaped grinding or separating tool of a power tool, in particular, of an angle grinder. The cover device is designed in particular to be retrofitted on the power tool. The cover device is provided with a bearing member having a bearing surface securable, when required, over a shielding member that partially covers the working tool. The bearing surface at least regionwise abuts the outer surface of the strip-shaped shielding member. The cover device also includes a protective disc which extends substantially transverse to the bearing surface and which partially covers the front, in the axial direction, side of the working tool. [0003] 2. Description of the Prior Art [0004] Most of angle grinders are equipped, standardwise, with a shielding member which is formed as a protective plate having an acruate...

Claims

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Application Information

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IPC IPC(8): B24B55/04
CPCB24B55/052
Inventor KOSCHEL, CHRISTIANFUNK, ALEXANDER
Owner HILTI AG
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