PROBLEM TO BE SOLVED: To provide a brushhead adapted for cleaning teeth as part of a power toothbrush and including a brushhead member which includes a bristle field, as for the brushhead in operation moves in a reciprocating action, wherein as much fluid as possible from the action of bristles is directed toward the teeth and gums of a user providing cleaning and a sensory effect for the user.SOLUTION: In one embodiment, the brushhead includes a rim member which extends around at least a substantial portion of the brushhead, the rim member extending around the entire bristle field and having an upper edge which is lower than the top of the bristles. The rim member has a different flexibility than the bristles so that the movement of the rim member and the bristles is out of phase during operation of the toothbrush, which results in fluid from the bristles being directed toward the teeth during operation of the toothbrush.COPYRIGHT: (C)2011,JPO&INPIT【課題】本発明は、電動歯ブラシの一部として歯を清掃するのに適しており、ブリッスル領域を含むブラシヘッド部材を具備するブラシヘッドであり、動作中に往復運動で動くブラシヘッドに関するものであり、ブリッスルの動作からできるだけ多量の流体をユーザの歯及び歯ぐきに向かって方向づけるようにして、ユーザのために清掃及び感覚的効果をもたらすことを目的とする。【解決手段】ある実施形態において、このブラシヘッドは、ブラシヘッドの少なくともかなりの部分の周りに延在するリム部材を具備し、このリム部材が、ブリッスル領域全体を囲むように延在し、ブリッスルの先端よりも低い上端をもつ。このリム部材がブリッスル部とは異なる可撓性をもつので、歯ブラシの動作中、リム部材及びブリッスルの動きは位相がずれ、そのため、歯ブラシの動作時にブリッスルから流体が歯に向かって方向づけられる結果がもたらされる。【選択図】図4
