Koji Hasegawa,Yasuhiro Hotta,Naotoshi Kinoshita,Tarou Endou,Shuichiro Fukuda,Kazuhiro Uchida,Yosuke Tomita,Hitoshi Kamada,Kazunori Wakabayashi
申请号：
US14232341
公开号：
US09266142B2
申请日:
2012.09.06
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A partition portion includes a proximal portion fixed to the outer periphery of the peripheral wall portion and a sealing member mounted to the proximal portion in a manner that the sealing member is allowed to move in inner and outer circumferential directions of the peripheral wall portion. When receiving a force toward an outer circumferential direction, the sealing member is moved in the outer circumferential direction, and a distal end portion thereof is held in press-contact with a sliding contact portion of a ventilation member with a force generated along with the above-mentioned force.
