Bored and flanged sleeve held in panel or wall

摘要

On one side (6), the panel, wall etc (5) is fixed in place by the sleeve (3) flange (2) and on the far side by a ball (9) to be pressed into the relatively narrower expanded part (11) of the sleeve bore (1). The sleeve part (13) behind the expansion (11) is reduced in diameter and drawn in to locate the impressed ball (9). The wall thickness of the sleeve where passed through the panel or wall should exceed that of the sleeve in the rear part and the sleeve is solid-walled where passed through the panel or wall. The tool used for the ball insertion stage is made up of plunger (8) and sleeve-calibrating die (12). Once the flange has been run tight against the panel side (6), the larger diameter ball (9) is forced in by plunger (8) to form the expanded sector (11) of the sleeve, thus locating this with flange to panel (2,5). At the panel the sleeve diameter is (d1) as opposed to the larger (Dw) of the impressed ball.