| 摘要 |
PROBLEM TO BE SOLVED: To provide a moving object detection device that can enhance the fitting strength and can change a metal cover to a resin-made cover by devising weld-line measures.SOLUTION: As shown in Fig. (b), a cover 40 is mounted to a case 20 by fitting four protrusions 27-30 in four holes 46-49. The cover is fitted in four places, so that the fitting strength is increased more than being fitted in two places. In the cover 40, a gate position is set between a first hole 46 and a third hole 48, and thereby a weld-line is made between a second hole 47 and a fourth hole 49. The deformation of the cover 40 is small between the second hole 47 and the fourth hole 49, so that the occurrence of cracks can be suppressed. In the cover 40, the first to fourth holes 46-49 are made in parallel with each other, and therefore the mold opening after the resin injection molding becomes easy and the resinification of the cover 40 is promoted.SELECTED DRAWING: Figure 10 |
