| 摘要 |
<p>PURPOSE:To reduce the fraction defective by providing an insertion hole on the end face of a drum, inserting an earth contact which can be deformed in the radial direction into this insertion hole and executing an earth. CONSTITUTION:An earth contact 31 is inserted into an insertion hole 46 formed in the lower drum 12, and bent so as to contract in the radial direction when the contact 31 is inserted into the lower drum 12 made of Al, and by its elastic restoring force, joint force can be obtained. In such a way, the earth of the drum 12 can be attained by inserting the earth contact 31, and by inserting the contact 31, a fall-off stop of a connector 45 and the earth of the fixed drum 12 can be attained simultaneously. Also, since i is unnecessary to execute soldering to the inside of the drum 12, no flux is generated, and the fraction defective can be lowered.</p> |
