| 摘要 |
PURPOSE:To eliminate a position shift of a reflection mirror and to improve the detection precision of an article by extending an elastic cord member between both side parts of the reflection mirror in a bundled shape while the reflection mirror is inserted between a detaining members for specifying its fitting position, and clamping and holding the elastic member on the rear surface of a fitting member through a detaining hole formed therein. CONSTITUTION:The reflection mirror 7 is fitted to the surface of the fitting plate 6 and inserted from above and below between lock members fitted in fitting holes 9 for detaining member, and the fitting position of the reflection mirror 7 is specified. Further, a rubber band 11 of fluororubber as the elastic cord member is extended between both side parts of the reflection mirror 7 and said rubber band 11 is tightened up on the rear surface of the fitting plate 6 through a detaining hole 8 in the bundle to press both end parts of the rubber band 11 by a retaining member 12, holding the rubber band 11 fixedly. After the rubber band is fixed, its unnecessary end parts are cut. Further, the edge parts of the detaining hole 8 contacting the rubber band 11 is chambered. |
