Vibration generating device and oral hygiene device using same
First Claim
1. An oral hygiene device comprising:
- an electric motor installed in a casing and a rotating body mounted on a rotary shaft of the electric motor,a driving magnetic body made of permanent magnet provided in the rotating body,an output member passing through the casing in fluid-tight condition,a resonance pin resiliently supporting a middle portion of the output member to the casing so as to be swingable finely,a driven magnetic body made of permanent magnet provided in the output member to face said driving magnetic body so as not to contact therewith inside the casing, andan oral hygiene tool being removably attached directly or indirectly to the output member outside the casing,wherein the oral hygiene tool through the output member is vibrated by a varying magnetic field generated between both magnetic bodies with a rotation of the rotating body.
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Accused Products
Abstract
An oral hygiene device comprises a rotating body 22 mounted to a rotating shaft 21 of an electric motor 14, an output shaft 11 resiliently supported via a resonance pin 25 to be swingable finely, a drive magnetic body 23 provided on the rotating body 22, and a driven magnetic body 31 provided on the output shaft 11 to face the drive magnetic body 23 so as to be out of contact therewith. The drive magnetic body 23 and the driven magnetic body 31 are composed of permanent magnets, and as the rotating body 22 revolves, a varying magnetic field is generated between the both magnetic bodies 23, 31 to cause vibration of the output shaft 11 at high speed. In this manner, there are provided a vibration generating device, which can be manufactured at low cost and efficiently transmits vibration, and an oral hygiene device using the same.
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Citations
8 Claims
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1. An oral hygiene device comprising:
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an electric motor installed in a casing and a rotating body mounted on a rotary shaft of the electric motor, a driving magnetic body made of permanent magnet provided in the rotating body, an output member passing through the casing in fluid-tight condition, a resonance pin resiliently supporting a middle portion of the output member to the casing so as to be swingable finely, a driven magnetic body made of permanent magnet provided in the output member to face said driving magnetic body so as not to contact therewith inside the casing, and an oral hygiene tool being removably attached directly or indirectly to the output member outside the casing, wherein the oral hygiene tool through the output member is vibrated by a varying magnetic field generated between both magnetic bodies with a rotation of the rotating body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification