| 摘要 |
The invention relates to a toothbrush comprising a handle, a head in the form of a housing open at least on one side, and a brush section insertable into said open side and having a carrier and a bristle attachment. It also comprises locking means in the form of interengaging projections and recesses inside the housing and on the carrier for fixing the brush section. The housing has a cheek supporting the carrier on the entire peripheral area thereof and there is also provided on the head, means for tool-free removal of the brush section by pressing thereon. To separate the functions of "achieving a tight seal" and "locking" from each other, the inside of the cheek of the housing and the periphery of the carrier are in the form of sealing surfaces with completely smooth walls, and the locking means outside the sealing surfaces has inwardly staggered, resilient detents.
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