KLOSTER, TYLER G.,BENNING, WOLTER F.,CHANG, YU-WEN
申请号：
CA2785087
公开号：
CA2785087C
申请日:
2010.11.22
申请国别(地区):
CA
年份:
2018
代理人:
摘要：
The power toothbrush includes a driving assembly which in turn includes a DC motor (14) and a battery. The DC motor has a rotating drive shaft (16), supported at its free end. The drive shaft has an eccentric portion (18). Mounted on the eccentric portion is a plastic sleeve (20) having an extending portion which engages one end of a spring member (38). The other end of the spring member is secured to a yoke (36) which is secured to a brushhead shaft (32). Rotation of the drive shaft results in the extending portion of the plastic sleeve, moving the spring between a compressed state and an extended state. The action of the DC motor excites the spring to produce an oscillating action of the brushhead shaft and a brushhead assembly (40) mounted thereon.
