Abstract: A personal care device having a handle having an engagement portion and a persona care attachment are described. The personal care attachment has a housing attached to the engagement portion and a contact element carrier. The contact element carrier is movably coupled to the housing. A plurality of contact elements is arranged on the contact element carrier, and wherein the personal care attachment is driven at a frequency of between about 150 Hz to about 175 Hz and has a sound intensity level of less than about 75 dB(A).

Abstract: A personal hygiene device has a resonant motor and a motor control unit for applying a periodic voltage signal with a driving frequency at the resonant motor for driving the resonant motor into an oscillating motion with an oscillating frequency equal to the driving frequency. The motor control unit comprises a synthesizer circuit for digitally synthesizing the periodic voltage signal from voltage pulses of variable length provided with a pulse frequency higher than the driving frequency such that at least two voltage pulses are applied at least in one of two half cycles of each period of the periodic voltage signal.

Abstract: A personal hygiene device has a handle, a treatment head mounted for relative movement of at least a portion thereof with respect to the handle against a restoring force when a treatment force is applied in at least one direction onto the treatment head, a treatment-force-measurement unit for determining the applied treatment force comprising a light-emitting element, a light-sensitive element, and a light-changing element arranged at least partly in the light path between the light-emitting element and the light-sensitive element, wherein the light-changing element and at least one of the light-emitting element and light-sensitive element are arranged to be moved relatively to each other when at least the portion of the treatment head is moved.

Abstract: A personal hygiene device, in particular a toothbrush, has a handle, a treatment head mounted for relative movement with respect to the handle against a spring force when a treatment force is applied in at least one direction onto the treatment head, a treatment-force-measurement unit for determining the applied treatment force comprising an electrically powered coil, a coil core element, and a control circuit for determining a parameter indicative of the inductance of the coil, wherein the coil core element is arranged to be moved with respect to the coil when the treatment head is moved.

Abstract: An oral cleaning tool for an electric oral hygiene device is disclosed. The oral cleaning tool includes a housing having a head section with a head cavity for accommodating a movable oral cleaning head and a neck section with a neck cavity and a handle coupling section; a first magnetic coupling element including at least a permanent magnet or a magnetizable element being provided in the neck section for mechanical handle drive shaft connection by magnetic interaction. The first magnetic coupling element is mounted at a motion transmitter, the motion transmitter extending inside the neck cavity to the head cavity, the motion transmitter arranged so as to be movable in a linear or longitudinal direction. The motion transmitter is coupled with the oral cleaning head, the oral cleaning head arranged so as to oscillate in a rotational direction.

Abstract: A personal hygiene device has a handle and a treatment head pivotably connected with the handle. Applying a treatment force against the treatment head causes a pivoting of the treatment head relative to the handle. A sensor, such as, e.g., a Hall sensor, fixedly secured with respect to one of the handle and the treatment head, measures a measurement variable. A sensor cooperation unit defines or influences the measurement variable in dependence on the relative position of the sensor and the sensor cooperation unit, such e.g., as a sensor permanent magnet, fixedly secured relative to one of the handle and the treatment head. A spring unit defines a rest position of the treatment head when no treatment force is applied. The spring unit has a first spring constant in the treatment direction and a second spring constant in a lateral direction, the second spring constant being at least about two times higher than the first spring constant.

Abstract: A personal hygiene device has a handle, a treatment head, and a motor carrier disposed in the handle. The motor is pivot-mounted against at least one spring element arranged between the handle and the motor carrier. The motor has a stator portion fixedly mounted at the motor carrier and an armature portion spring mounted at the motor carrier to allow a motion relative to the motor carrier. The armature portion is coupled with a drive shaft connected with the treatment head for transferring motion thereto, wherein an external treatment force acting on the brush head leads to pivoting of the motor carrier relative to the handle. The motor has a motor permanent magnet and a coil for providing an alternating electromagnetic field interacting therewith to excite an oscillating motion of the drive shaft.

Abstract: A personal hygiene device has a resonant motor and a motor control unit for applying a periodic voltage signal with a driving frequency at the resonant motor for driving the resonant motor into an oscillating motion with an oscillating frequency equal to the driving frequency. The motor control unit comprises a synthesizer circuit for digitally synthesizing the periodic voltage signal from voltage pulses of variable length provided with a pulse frequency higher than the driving frequency such that at least two voltage pulses are applied at least in one of two half cycles of each period of the periodic voltage signal.

Abstract: A personal hygiene device has a resonant motor and a motor control unit for applying a periodic voltage signal with a driving frequency at the resonant motor for driving the resonant motor into an oscillating motion with an oscillating frequency equal to the driving frequency. The motor control unit comprises a synthesizer circuit for digitally synthesizing the periodic voltage signal from voltage pulses of variable length provided with a pulse frequency higher than the driving frequency such that at least two voltage pulses are applied at least in one of two half cycles of each period of the periodic voltage signal.

Abstract: An oral-care implement having a housing extending along a longitudinal-extension direction, a functional element mounted at the housing for driven motion relative to the housing, a motion-transmitter element disposed within the housing and extending along the longitudinal-extension direction. The motion-transmitter element has a first coupling portion coupled with the functional element. The motion-transmitter element has a metal-sheet portion made from a punched and bent metal sheet. The metal-sheet portion can have at least one section having a non-flat cross-sectional shape in a plane perpendicular to the longitudinal-extension direction, such as an L-shape, or U-shape, or S-shape.

Abstract: An electrically driven device includes a housing, an electric motor with a drive shaft having a first rotary axis and a drive pin eccentrically connected to the drive shaft, and a driven shaft having a second rotary axis and mounted in the housing for a pivoting movement. The driven shaft is coupled to the drive pin by a gear mechanism converting a rotary motion of the drive shaft into the reciprocating pivoting of the driven shaft. The gear mechanism has first and second transmission stages, the former including a cross slider, and the latter an elastically deformable transmission member. The cross slider has a sliding support extending perpendicular to the first rotary axis and receiving the drive pin. The cross slider is axially guided in the housing to move in an axial direction perpendicular to the first rotary axis and perpendicular to the extension of the sliding support. A link, offset relative to the second rotary axis, connects the cross slider to the elastically deformable transmission member.

Abstract: An electrically driven device includes a housing, an electric motor with a drive shaft having a first rotary axis and a drive pin connected to the drive shaft eccentrically with respect to the rotary axis, and a driven shaft having a second rotary axis and mounted in the housing for performing a pivoting about the second rotary axis. The driven shaft is coupled to the drive shaft by a gear mechanism having a scotch yoke mechanism converting a rotary motion of the drive shaft into a reciprocating pivoting motion of the driven shaft. The scotch yoke mechanism includes a cross slider receiving the drive pin and having a sliding support extending perpendicular to the first rotary axis. The cross slider is guided in the housing by at least two elastically deformable elements. The driven shaft is coupled to the cross slider by a pivotable crank arm, converting a rotary motion of the drive shaft into a reciprocating of the driven shaft.

Abstract: An electrically driven device includes a housing, an electric motor with a drive shaft having a first rotary axis and a drive pin connected to the drive shaft eccentrically with respect to the rotary axis, and a driven shaft having a second rotary axis and mounted in the housing for a pivoting about the second rotary axis. The driven shaft is indirectly coupled to the drive shaft by a gear mechanism converting a rotary motion of the drive shaft into a reciprocating pivoting motion of the driven shaft. The gear mechanism includes a cross slider having a sliding support extending perpendicular to the first rotary axis and receiving the drive pin. The cross slider is guided in the housing by a parallel lever in the form of a parallelogram by at least two pivotable links. The driven shaft is coupled to the cross slider by one of the said links, thereby converting a rotary motion of the drive shaft into a reciprocating pivoting of the driven shaft.

Abstract: The present disclosure is concerned with an oral hygiene implement having a longitudinal axis, a carrier element mounted for driven movement, a motion transmitter that has a first end for transferring a drive force to the carrier element, which first end is provided at a position being offset from the longitudinal axis, and the motion transmitter has a second end positioned essentially on on the longitudinal axis or is arranged for being positioned essentially on the longitudinal axis during operation, wherein the motion transmitter has a first coupling part comprising the first end, which first coupling part essentially extends along a centre axis arranged at an angle with respect to the longitudinal axis, and a second coupling part comprising the second end, which first coupling part is fixedly connected with a first connecting portion of an elastic pivot element that allows that the first coupling part and the second coupling part can pivot with respect to each other at least in a first pivoting plane span

Abstract: The present disclosure is concerned with an oral hygiene implement having a longitudinal axis, a carrier element mounted for driven movement, a motion transmitter that has a first end for transferring a drive force to the carrier element, which first end is provided at a position being offset from the longitudinal axis, and the motion transmitter has a second end positioned essentially on on the longitudinal axis or is arranged for being positioned essentially on the longitudinal axis during operation, wherein the motion transmitter has a first coupling part comprising the first end, which first coupling part essentially extends along a centre axis arranged at an angle with respect to the longitudinal axis, and a second coupling part comprising the second end, which first coupling part is fixedly connected with a first connecting portion of an elastic pivot element that allows that the first coupling part and the second coupling part can pivot with respect to each other at least in a first pivoting plane span

Abstract: A personal hygiene device has a resonant motor and a motor control unit for applying a periodic voltage signal with a driving frequency at the resonant motor for driving the resonant motor into an oscillating motion with an oscillating frequency equal to the driving frequency. The motor control unit comprises a synthesizer circuit for digitally synthesizing the periodic voltage signal from voltage pulses of variable length provided with a pulse frequency higher than the driving frequency such that at least two voltage pulses are applied at least in one of two half cycles of each period of the periodic voltage signal.

Abstract: An oral hygiene implement has a neck section extending along a longitudinal direction and a head section having a through hole therein extending through the head section along a through hole direction having an angle with respect to the longitudinal direction and having a head section housing surrounding the through hole. The neck section has a neck section housing surrounding a neck section cavity. The through hole defines a first and a second opening in the head section housing. A cap element, separately made from the head section housing, is connected with the head section housing to essentially cover the first opening. A carrier element, separately made from the head section housing, is arranged to cover the second opening. Between an edge of the first opening and an edge of the cap there is a circumferential gap that allows water, saliva, or toothpaste to escape an interior of the head section during use.

Abstract: A personal hygiene device has a resonant motor and a motor control unit for applying a periodic voltage signal with a driving frequency at the resonant motor for driving the resonant motor into an oscillating motion with an oscillating frequency equal to the driving frequency. The motor control unit comprises a synthesizer circuit for digitally synthesizing the periodic voltage signal from voltage pulses of variable length provided with a pulse frequency higher than the driving frequency such that at least two voltage pulses are applied at least in one of two half cycles of each period of the periodic voltage signal.

Abstract: The present disclosure is concerned with an oral hygiene implement having a neck section extending along a longitudinal direction and having a neck section housing surrounding a neck section cavity, a head section having a through hole therein extending through the head section along a through hole direction having an angle with respect to the longitudinal direction and having a head section housing surrounding the through hole, wherein the through hole defines a first and a second opening in the head section housing, and wherein a cap element separately made from the head section housing is connected with the head section housing to essentially cover the first opening and a carrier element separately made from the head section housing is arranged to cover the second opening.

Abstract: A personal hygiene device, in particular a toothbrush, has a handle, a treatment head mounted for relative movement with respect to the handle against a spring force when a treatment force is applied in at least one direction onto the treatment head, a treatment-force-measurement unit for determining the applied treatment force comprising an electrically powered coil, a coil core element, and a control circuit for determining a parameter indicative of the inductance of the coil, wherein the coil core element is arranged to be moved with respect to the coil when the treatment head is moved.