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Tool-clamp of impactor

A technology of impact machine and tool holder, which can be used in tool holder accessories, light impact tools, striking tools, etc., and can solve problems such as difficulties

Inactive Publication Date: 2007-10-10
BLACK & DECKER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is relatively difficult to operate the latches of known cartridge designs for impact machines fitted with a cutter having a stop ring

Method used

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  • Tool-clamp of impactor
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  • Tool-clamp of impactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] A first embodiment of the tool holder shown in Figures 1, 2a and 2b has a body 2 formed in the shape of a tube. The rear end of the main body is installed in the tubular flange body 4 . The shank of the tool 6 is locked in the tool holder. The flange body 4 is rigidly fixed at a certain position on the shell of the impact machine, so that the rear end of the tool 6 locked in the tool holder is repeatedly impacted by the striking part 3 of the hammer mechanism of the impact machine. In the upper part of FIG. 1 the knife 6 and the striker 3 are shown in their active position and in the lower half of FIG. 1 the knife 6 and the striker 3 are shown in their inactive mode position. On the outer surface of the main body 2 are formed an annular notch 8 and an annular rib 9, the annular rib being located just in front of the annular notch. The body is also formed with a pair of axially rearwardly extending slots 10 extending from the annular recess 8 on opposite sides of the b...

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PUM

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Abstract

A tool holder for a hand supported impacting machine, which tool holder is suitable for receiving a tool having a shank portion on which is formed a retaining collar via which retaining collar the tool is retained within the tool holder. The tool holder includes a tubular main body for receiving the tool and at least one locking element moveably mounted with respect to the main body and having an engaging portion moveable between a radially inner locked position in which the engaging portion is engageable with the retaining collar of the tool to retain the tool within the tool holder and a radially outer unlocked position in which a tool can be inserted into or removed from the tool holder. The tool holder additionally comprises a manually actuable sleeve which is mounted around the main body so as to be moveable between a locked position in which the locking elements are held in their locked position and an unlocked position in which the engaging portions of the locking elements are moveable to their unlocked position.

Description

technical field [0001] The present invention relates to a hand-supported impact machine, such as a concrete breaker or a heavy hammer. Background technique [0002] Impact machines of this type typically have a tool holder in which the cutter is releasably mounted for limited axial reciprocation relative to the tool holder. The hammering mechanism produces repetitive impacts on the rear end of the knife. The front end of the cutter is pushed onto the body of material to be broken, such as rock or concrete, to which the cutter transmits the impact from the hammering mechanism. The tool is typically retained within the tool holder by a lock which engages a stop ring formed on the tool. [0003] Patent GB1382019 describes a percussion machine with a tool holder for a tool with such a stop ring. In a first embodiment, a latch is pivotally mounted on the tool holder, pivotally between a first position and a second position in which a raised portion on the latch The stop ring ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25D17/08B23B31/00
CPCB25D2217/0038B25D17/08B25D2250/231B25D17/088Y10T279/17076
Inventor 诺伯特·哈恩
Owner BLACK & DECKER INC