| 摘要 |
PURPOSE:To load and unload rapidly and accurately wiht simple operation by fitting a junk ring having a taperingly inclined plane on the outer circumference of a plug and interpositing a compressing spring pushing the junk ring between the junk ring the plug body. CONSTITUTION:A junk ring 20 where the inside circumferential surface at the top side is formed as an inclined plane 19 extending taperingly is fitted slidably on the outer circumferential surface of a plug body 13 and a compression coil spring 22 that pushes always with the force the junk ring 20 to the top is interposed between a flange part 21 provided with extrusion on the outer circumferential surface of the plug 13 behind the junk ring 20 and the junk ring 20. On the other hand, notched grooves 26 facing oppositely 180 deg. each other are notched respectively at both end parts of a receptacle body 25 on the inside circumferential surface of a cylindrical sleeve 24 into which a core 12 is inserted closely is inserted, and a circular hook part 29 is molded to be accomodated in the notched groove 26 at both ends of two bar springs 27 put between the receptacle 25 and the sleeve 24. |
