| 摘要 |
A children's toothbrush having a handle and an arm joined to the handle and having bristles disposed at one end thereof. A joint is formed on the opposite end of the arm for connection to the handle. The handle has a cavity for receiving the arm and the bristles therein when the toothbrush is folded. There is also a lock disposed in the joint for releasably locking the joint to maintain said toothbrush in an open position. The joint comprises a cylindrical portion formed on the end of the arm having a central pivot hole. An annular channel is formed around the pivot hole and spaced apart wing arms receiving and capturing the cylindrical portion to complete the joint.
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