| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technology for sure welding of a translucent cover with different-color parts integrally molded to a housing. <P>SOLUTION: The tool is provided with a translucent cover 30 and a housing 20 welded together by the irradiation of beams, such as laser. The translucent cover has parts made of resin materials of a plurality of different colors (hereafter, to be called "different-color parts") 31, 32 integrally molded; and moreover, a boundary line 33 of a joint part of the different-color parts reaches a side end face 30a of the translucent cover, while the translucent cover is provided with a welded face 34 extended in a closed contour, the jointing part of the different-color parts has the so-called "rubbed joint area" 35, and the so-called "notched joint area" 36 in which the rear-face side of one different-color part is peeled off, and the surface-side part of another different-color part is scraped off to be jointed; and a boundary line 33r appearing on the welded face of the potato-peeled jointing part and a boundary line appearing on a welded face of the notch-peeled joint part are shifted in a direction crossing the width direction of the welded face. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
