Dust collection nozzle for core drills

Abstract

This article is a dust collection nozzle for a core drill used to collect cutting chips generated when a wall or the like is drilled with a core drill. As shown in the "Reference Diagram Showing the State of Use", this article is attached to a cylindrical casing, and a core drill bit is installed at one end. A rotating device such as an impact driver is connected to the other end, and the tip of the core drill bit, which rotates together, is pressed against a wall or the like to drill a hole. Cutting chips generated during drilling are sucked from inside the core drill bit into a dust collector through multiple holes formed in this article. In this article, multiple communication holes that communicate with the dust collection hole of the casing are formed in the circumferential direction, and adjacent communication holes are arranged with their positions shifted in the axial direction. This makes it possible to increase the opening area of ​​the communication holes while maintaining strength.

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