A powered toothbrush includes a plurality of rows of bristle tufts that project through a perforated top shell of a hollow toothbrush head. Ends of individual bristles are held in buckets to form the tufts and the bristle ends opposite the bucketed ends are free (where the opposite ends contact the toothbrush user's teeth). The bucketed ends of the bristle tufts are captured within the internal space within the head but are not fixedly attached to any other toothbrush component or structure. This non-fixed attachment feature enables the bristle tufts to have multiple degrees of freedom (DoF) of motion with respect to the perforations in the top shell and can rotate, move axially, and tilt.

A manually-wound or charged, powered toothbrush includes a winding mechanism, an energy storage element, and an output gear train to cause a rotating, oscillating or sweeping brush head to move, thus improving the efficacy of the user's oral-care regimen. The toothbrush may include a removable, replaceable brush head that includes a clip that also serves as a removal tool for a spent brush head.

A brush head is provided on the front surface at a distal-end-side part of a neck of a replaceable brush. A fitting shaft portion is provided on a planting base of the brush head so as to protrude rearward and penetrate through a support wall portion of the neck. A shaft hole is formed at a rotation center of a brush head body of the brush head so as to extend frontward from a rear surface of the brush head body. The neck has ahead support shaft mounted to the shaft hole so as to rotatably support the brush head. A front end of the head support shaft is located frontward of a rear surface of the planting base, and power from the driving portion is transmitted to a rear part of the fitting shaft portion.

A linear motor includes an armature mounted for driven linear oscillation substantially along a longitudinal direction; a secondary mass mounted for linear oscillation substantially along the longitudinal direction; and a coupling unit for coupling the armature and the secondary mass. The coupling unit includes at least two coupling spring assemblies and at least a coupling element, the coupling spring assemblies being arranged in planes perpendicular to the longitudinal direction and being spaced apart from each other, and the coupling element being fixedly connected with the coupling spring assemblies.

A toothbrush is disclosed. The toothbrush includes a handle, a brush tip connected to the handle, wherein the brush tip includes a plurality of bristles operably connected thereto, a power source, a direct current motor in selective electrical communication with the power source, wherein the motor includes a drive shaft, a drive assembly connected between the brush tip and the drive shaft, wherein the drive assembly converts rotation of the drive shaft into movement of the plurality of bristles, and a control assembly in electrical communication with the motor and the power source; wherein during operation of the motor, the control assembly monitors a current draw by the motor and adjusts a current applied to the direct current motor based on the current draw.

An attachment brush part for an electrical body care brush, in particular an electrical toothbrush, includes brush head with an in particular circular bristle carrier, on which a bristle field with a plurality of bristle bundles each with a plurality of care bristles is arranged.

An attachment brush part for an electrical body care brush, in particular an electrical toothbrush, wherein the attachment brush part is designed in a multi-part manner. The attachment brush part includes an attachment brush housing, a drive rod for driving a brush head, with a brush-head-side end section, on which a first toothing is arranged, and with a hand-part-side end section, and furthermore a brush head with a bristle carrier and care bristles which are arranged on this, wherein the bristle carrier includes a second toothing. The attachment brush housing further includes a securing element for the rotatable mounting of the hand-part-side end section of the drive rod. The first and second toothing form a drive toothing for the driving of the brush head by the drive rod.

A toothbrush comprising a drive mechanism and electronic circuitry configured to drive the drive mechanism to execute toothbrushing motions is disclosed. The electronic circuitry comprises a drive circuitry and a controller which is configured to form a drive signal to operate the drive circuitry to generate drive current. The drive signal comprises a plurality of signal packets, wherein a signal packet has a signal packet duration and comprises a train of switching signals. The switching signals are configured to repeatedly switch on and switch off drive current supply to the drive mechanism at a switching frequency f.sub.s. The signal packet duration is configured to define a rhythm of toothbrushing motions.

The disclosure provides an ionic toothbrush having an elongated body that may be configured to have a one-piece design, or alternatively one or more components of the ionic toothbrush may be removable and/or replaceable. In some embodiments, the present disclosure provides an ionic toothbrush which includes a handle portion, a brush head portion including a plurality of bristle tufts; and an electrical circuit configured to transmit a negative electrical charge through at least a portion of the brush head, wherein the electrical circuit includes one or more sections of conductive resin present on an outer surface of one or both of the handle portion and the brush head portion.

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).