Electric toothbrush with linear oscillator
First Claim
Patent Images
1. An electric toothbrush comprising;
- a drive part comprising;
a drive shaft provided to be lineally movable; and
a brush part detachably attached to one end of the drive shaft;
a driver configured to apply reciprocal force to the drive shaft to reciprocally lineally move the drive shaft;
a vibration-absorber connected to the drive shaft via a spring to be lineally movable along the drive shaft; and
an outer case housing the drive shaft, the driver, and the vibration-absorber,wherein the vibration-absorber is provided within an open area that extends from the drive shaft to an inner surface of the outer case.
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Accused Products
Abstract
An electric toothbrush includes a drive part, a driver, a brush part and a vibration-absorber. The drive part includes a drive shaft provided to be lineally movable and a brush part detachably attached to one end of the drive shaft. The driver is configured to apply reciprocal force to the drive shaft to reciprocally lineally move the drive shaft. The vibration-absorber is connected to the drive shaft via a second spring to be lineally movable along the drive shaft. A weight ratio of a weight of the vibration-absorber to a weight of the drive part is at least 0.9 and at most 1.1.
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Citations
27 Claims
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1. An electric toothbrush comprising;
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a drive part comprising; a drive shaft provided to be lineally movable; and a brush part detachably attached to one end of the drive shaft; a driver configured to apply reciprocal force to the drive shaft to reciprocally lineally move the drive shaft; a vibration-absorber connected to the drive shaft via a spring to be lineally movable along the drive shaft; and an outer case housing the drive shaft, the driver, and the vibration-absorber, wherein the vibration-absorber is provided within an open area that extends from the drive shaft to an inner surface of the outer case. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A brushing device, comprising;
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a brush part; a movable part including a drive shaft provided to be lineally movable; a driver configured to apply reciprocal force to the drive shaft to reciprocally lineally move the drive shaft; a vibration-absorber connected to the drive shaft via a spring to be lineally movable along the drive shaft; and an outer case housing the drive shaft, the driver, and the vibration-absorber, wherein the vibration-absorber is provided within an open area that extends from the drive shaft to an inner surface of the outer case. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A brushing apparatus comprising;
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a brush part; a movable part including a drive shaft provided to be lineally movable; driver means for applying reciprocal force to the drive shaft to reciprocally lineally move the drive shaft; a vibration-absorber connected to the drive shaft via a spring to be lineally movable along the drive shaft; and an outer case housing the drive shaft, the driver means, and the vibration-absorber, wherein the vibration-absorber is provided within an open area that extends from the drive shaft to an inner surface of the outer case. - View Dependent Claims (14)
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15. An electric toothbrush comprising;
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a drive part comprising; a drive shaft provided to be lineally movable; and a brush part detachably attached to one end of the drive shaft; a driver configured to apply reciprocal force to the drive shaft to reciprocally lineally move the drive shaft; a vibration-absorber connected to the drive shaft via a spring to be lineally movable along the drive shaft; a pedestal configured to hold at least a portion of the driver; a bearing configured to support an end of the drive shaft; and a projection engaged with the pedestal to provide an open space between the pedestal and the bearing within which the vibration-absorber is provided. - View Dependent Claims (16, 17)
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18. A brushing device comprising;
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a brush part; a movable part including a drive shaft provided to be lineally movable; a driver configured to apply reciprocal force to the drive shaft to reciprocally lineally move the drive shaft; a vibration-absorber connected to the drive shaft via a spring to be lineally movable along the drive shaft; a pedestal configured to hold at least a portion of the driver; a bearing configured to support an end of the drive shaft; and a projection engaged with the pedestal to provide an open space between the pedestal and the bearing within which the vibration-absorber is provided. - View Dependent Claims (19, 20)
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21. A brushing apparatus comprising;
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a brush part; a movable part including a drive shaft provided to be lineally movable; driver means for applying reciprocal force to the drive shaft to reciprocally lineally move the drive shaft; a vibration-absorber connected to the drive shaft via a spring to be lineally movable along the drive shaft, a pedestal configured to hold at least a portion of the driver means; a bearing configured to support an end of the drive shaft; and a projection engaged with the pedestal to provide an open space between the pedestal and the bearing within which the vibration-absorber is provided. - View Dependent Claims (22, 23)
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24. A brushing apparatus comprising;
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a brush unit attached to an end of a drive shaft; a driving unit configured to move the drive shaft; a vibration-absorbing unit configured to absorb vibrations caused by the movement of the drive shaft; a pedestal configured to hold at least a portion of the driving unit; a bearing configured to support an end of the drive shaft; and a projection engaged with the pedestal to provide an open space between the pedestal and the bearing within which the vibration-absorbing unit is provided. - View Dependent Claims (25, 26)
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27. A brushing apparatus comprising:
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a brush unit attached to an end of a drive shaft; a driving unit configured to move the drive shaft; a vibration-absorbing unit configured to absorb vibrations caused by the movement of the drive shaft; and an outer case housing the drive shaft, the driving unit, and the vibration-absorbing unit, wherein the vibration-absorbing unit is provided within an open area that extends from the drive shaft to an inner surface of the outer case, and wherein a ratio of a weight of the vibration-absorbing unit to a sum of a weight of the brush and driving units is from 0.9 to 1.1.
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Specification