Electronic toothbrush, and transmission for an electric toothbrush
1 Assignment
0 Petitions
Accused Products
Abstract
The transmission according to the invention for an electric toothbrush serves for the transmission and reforming of a rotational movement provided by an electric motor into a particularly careful and effective cleaning movement of a cleaning element. The ratio of the distance between the longitudinal mid-axis of an output shaft and the longitudinal mid-axis of a drive shaft of the transmission and of the distance between the longitudinal mid-axis of a shaft driving a cam of the transmission and the longitudinal mid-axis of the cam amounts to at least 10:1.
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Citations
58 Claims
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1-24. -24. (canceled)
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25. An electric toothbrush with a 1:
- 1 step-up transmission and reforming of a rotational movement, oriented in one direction of rotation and provided by an electric motor on a drive shaft, into at least one reversible pivotal movement of an output shaft for driving a movable cleaning element of the electric toothbrush, the transmission having a cam, operatively connected to the drive shaft, and a corresponding pick-up which is connected fixedly in terms of rotation to the output shaft, wherein a ratio of the distance between the longitudinal mid-axis of the output shaft and the longitudinal mid-axis of the drive shaft in the region of the pick-up to the distance between the longitudinal mid-axis of a shaft driving the cam and the longitudinal mid-axis of the cam amounts to at least 10;
1. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
- 1 step-up transmission and reforming of a rotational movement, oriented in one direction of rotation and provided by an electric motor on a drive shaft, into at least one reversible pivotal movement of an output shaft for driving a movable cleaning element of the electric toothbrush, the transmission having a cam, operatively connected to the drive shaft, and a corresponding pick-up which is connected fixedly in terms of rotation to the output shaft, wherein a ratio of the distance between the longitudinal mid-axis of the output shaft and the longitudinal mid-axis of the drive shaft in the region of the pick-up to the distance between the longitudinal mid-axis of a shaft driving the cam and the longitudinal mid-axis of the cam amounts to at least 10;
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44. An electric toothbrush with a 1:
- 1 step-up transmission and reforming of a rotational movement, oriented in one direction of rotation and provided by an electric motor on a drive shaft, into at least one reversible pivotal movement of an output shaft for driving a movable cleaning element of the electric toothbrush, the transmission having a cam, operatively connected to the drive shaft, and a corresponding pick-up which is connected fixedly in terms of rotation to the output shaft, wherein the movable cleaning element executes a reversible pivoting movement with a frequency of between 3,000 cycles/min and 15,000 cycles/min and wherein the movable cleaning element, during the pivoting movement, can be deflected, overall, by 3°
to 15°
, between its two maximum deflection positions. - View Dependent Claims (45)
- 1 step-up transmission and reforming of a rotational movement, oriented in one direction of rotation and provided by an electric motor on a drive shaft, into at least one reversible pivotal movement of an output shaft for driving a movable cleaning element of the electric toothbrush, the transmission having a cam, operatively connected to the drive shaft, and a corresponding pick-up which is connected fixedly in terms of rotation to the output shaft, wherein the movable cleaning element executes a reversible pivoting movement with a frequency of between 3,000 cycles/min and 15,000 cycles/min and wherein the movable cleaning element, during the pivoting movement, can be deflected, overall, by 3°
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46. An electric toothbrush with a 1:
- 1 step-up transmission and reforming of a rotational movement, oriented in one direction of rotation and provided by an electric motor on a drive shaft, into at least reversible pivotal movement of an output shaft for driving a movable cleaning element of the electric toothbrush, the transmission having a cam, operatively connected to the drive shaft, and a corresponding pick-up which is connected fixedly in terms of rotation to the output shaft, wherein the drive shaft and the output shaft have longitudinal axes included with respect to each other to form an angle of between about 3°
-10°
, and the movable cleaning element executes a reversible pivoting movement with a frequency of between 3,000 cycles/min and 15,000 cycles/min and wherein the movable cleaning element, during the pivoting movement, can be deflected, overall, by 3°
to 15°
, between its two maximum deflection positions. - View Dependent Claims (47)
- 1 step-up transmission and reforming of a rotational movement, oriented in one direction of rotation and provided by an electric motor on a drive shaft, into at least reversible pivotal movement of an output shaft for driving a movable cleaning element of the electric toothbrush, the transmission having a cam, operatively connected to the drive shaft, and a corresponding pick-up which is connected fixedly in terms of rotation to the output shaft, wherein the drive shaft and the output shaft have longitudinal axes included with respect to each other to form an angle of between about 3°
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48. An electric toothbrush, comprising:
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a body portion having a grip and a body cavity that receives an electric motor and a power source, the electric motor including a drive shaft that is driven at a rotational speed of between 3,000 and 12,000 rev/min., the drive shaft having a longitudinal axis; an internal framework provided inside the body cavity, the internal framework having a head bearing; an output shaft extending from the body portion through the head bearing to be supported thereby, the output shaft having a longitudinal axis; a plug-on brush forming a movable cleaning element and having a neck and a head containing bristles, the neck having an internal shaft receptacle that receives the output shaft to be fixedly mounted thereon for rotation with the output shaft; a 1;
1 step-up transmission that transforms rotational movement of the drive shaft into reciprocating pivotal movement of the output shaft for driving the movable cleaning element formed by the plug-on brush, the transmission having a cam eccentrically mounted for rotation on the drive shaft, and a corresponding pick-up fixedly mounted for rotation with the output shaft, the pick-up including a support portion extending coaxial with the output shaft and extending along the longitudinal axis of the output shaft to be supported thereby, a pick-up surround defined by an internal sensing wall that receives the cam therethrough, the pickup surround extending generally perpendicular to the support portion, and a pick-up support extension tip formed as an extension of the support portion that stands on a supporting surface of the electric motor or body of the electric toothbrush to support the pick-up at an end opposite the output shaft, the extension tip forming a bearing point allowing rotation of the pick-up,wherein the longitudinal axes of the drive shaft and the output shaft are offset from each other and form an angle therebetween of between about 3°
-10°
,the movable cleaning element executes a reversible pivoting movement with a frequency of between 3,000 cycles/min and 15,000 cycles/min, and the movable cleaning element during the movement is constrained by the dimensions of the pick-up surround sensing wall and cam between two maximum deflection positions to an overall deflection of 3°
to 15°
. - View Dependent Claims (49, 50, 51)
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52. An electric toothbrush, comprising:
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a body portion having a grip and a body cavity that receives an electric motor and a power source, the electric motor including a drive shaft that is driven at a rotational speed of between 3,000 and 12,000 rev/min., the drive shaft having a longitudinal axis; an internal framework provided inside the body cavity, the internal framework having a head bearing and a stabilizer shaft substantially perpendicular to the longitudinal axis; an output shaft extending from the body portion through the head bearing to be supported thereby, the output shaft having a longitudinal axis; a plug-on brush forming a movable cleaning element and having a neck and a head containing bristles, the neck having an internal shaft receptacle that receives the output shaft to be fixedly mounted thereon for rotation with the output shaft; a 1;
1 step-up transmission that transforms rotational movement of the drive shaft into reciprocating pivotal movement of the output shaft for driving the movable cleaning element formed by the plug-on brush, the transmission having a cam eccentrically mounted for rotation on the drive shaft, and a corresponding pick-up fixedly mounted for rotation with the output shaft, the pick-up including a support portion extending coaxial with the output shaft and extending along the longitudinal axis of the output shaft to be supported thereby, a pick-up surround defined by an internal sensing wall that receives the cam therethrough, the pickup surround extending generally perpendicular to the support portion, and a pick-up recess, the pick-up recess being dimensioned to receive the stabilizer shaft therethrough to support the pick-up and allow pivotal movement of the pick-up,wherein the longitudinal axes of the drive shaft and the output shaft are offset from each other and form an angle therebetween of between about 3°
-10°
,the movable cleaning element executes a reversible pivoting movement with a frequency of between 3,000 cycles/min and 15,000 cycles/min, and the movable cleaning element during the movement is constrained by the dimensions of the pick-up surround sensing wall and cam between two maximum deflection positions to an overall deflection of 3°
to 15°
. - View Dependent Claims (53, 54, 55, 56, 57, 58)
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Specification