Rotary electric toothbrush with a swing head
First Claim
1. A rotary electric toothbrush with a swing head comprising a handle and a neck, the handle containing a first swing link connected to a motor, the neck containing a crank to drive a brush head, and second swing link to be abutted to the first link in the handle, wherein a rotor is attached to a motor shaft;
- a U-shape member being attached to the first swing link at an upper edge of the handle;
the first swing link indicating a semi-circular plan with a triangle gap to drive the second swing link in the neck when the U-shape member having motion caused by friction from the rotor;
the brush head being driven by the crank to execute lateral swing of thirty degrees respect to a vertical axis; and
wear and tear to the crank being minimized so there is little resistance being transferred to the rotating crank;
a bottom of a front end of the neck and a plastic part of the crank that is held in position by the brush head and are secured.
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Accused Products
Abstract
An electric toothbrush comprised of a handle and a neck; the handle containing a swing link connected to a motor and a cell cabinet; the neck also containing a crank to drive a brush head and another swing link abutted to its counterpart in the handle characterized by that a rotor being inserted to the motor shaft; a U-shape member inserted to the swing link in the handle; the U-shape member being engaged by friction due to reciprocal impact from the rotor thus to drive the swing link in the neck; and the crank further driving the brush head to execute lateral swing at an angle of thirty degrees to achieve the optimal tooth brushing effect.
64 Citations
4 Claims
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1. A rotary electric toothbrush with a swing head comprising a handle and a neck, the handle containing a first swing link connected to a motor, the neck containing a crank to drive a brush head, and second swing link to be abutted to the first link in the handle, wherein a rotor is attached to a motor shaft;
- a U-shape member being attached to the first swing link at an upper edge of the handle;
the first swing link indicating a semi-circular plan with a triangle gap to drive the second swing link in the neck when the U-shape member having motion caused by friction from the rotor;
the brush head being driven by the crank to execute lateral swing of thirty degrees respect to a vertical axis; and
wear and tear to the crank being minimized so there is little resistance being transferred to the rotating crank;
a bottom of a front end of the neck and a plastic part of the crank that is held in position by the brush head and are secured. - View Dependent Claims (2, 3, 4)
- a U-shape member being attached to the first swing link at an upper edge of the handle;
Specification