EP3663058B1 - Körperpflegevorrichtung mit schwenkbarem behandlungskopf - Google Patents

Körperpflegevorrichtung mit schwenkbarem behandlungskopf Download PDF

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Publication number
EP3663058B1
EP3663058B1 EP18209986.1A EP18209986A EP3663058B1 EP 3663058 B1 EP3663058 B1 EP 3663058B1 EP 18209986 A EP18209986 A EP 18209986A EP 3663058 B1 EP3663058 B1 EP 3663058B1
Authority
EP
European Patent Office
Prior art keywords
pin
cam surface
personal care
care device
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18209986.1A
Other languages
English (en)
French (fr)
Other versions
EP3663058A1 (de
Inventor
Martin Weschta
Peter Junk
Martin Diehl
Pedro Sanchez-Martinez
Alexander Hasse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Friedrich Alexander Univeritaet Erlangen Nuernberg FAU
Original Assignee
Braun GmbH
Friedrich Alexander Univeritaet Erlangen Nuernberg FAU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH, Friedrich Alexander Univeritaet Erlangen Nuernberg FAU filed Critical Braun GmbH
Priority to ES18209986T priority Critical patent/ES2946737T3/es
Priority to EP18209986.1A priority patent/EP3663058B1/de
Priority to KR1020217017234A priority patent/KR20210087992A/ko
Priority to CN201980073901.4A priority patent/CN113015606B/zh
Priority to JP2021531408A priority patent/JP7348284B2/ja
Priority to PCT/IB2019/059937 priority patent/WO2020115592A1/en
Publication of EP3663058A1 publication Critical patent/EP3663058A1/de
Application granted granted Critical
Publication of EP3663058B1 publication Critical patent/EP3663058B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
    • A45D26/0023—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers with rotating clamping elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/048—Complete cutting head being movable
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
    • A45D2026/008—Details of apparatus for removing superfluous hair

Definitions

  • the present application is concerned with a personal care device having a treatment head arranged for pivoting around a pivot axis with respect to a body of the personal care device.
  • Document EP 1 372 428 A1 generally describes an epilator having a head and a housing, where the head is mounted at the housing so that it can pivot around a rest position.
  • a spring is mounted between head and housing so that the head is forced back into the rest position once it is pivoted out of the rest position.
  • Document EP 3 398 737 A1 discusses a razor handle that comprises an elongated body, a connector, and a release mechanism.
  • the release mechanism is configured for releasing the exchangeable razor blade cartridge from the razor handle.
  • the razor handle further comprises a release trigger, offset from the connector in a longitudinal direction of the elongated body, and a transmission mechanism connecting the release trigger to the release mechanism.
  • a push button, forming a release trigger may be arranged so as to emerge through an opening at a middle segment of the elongated body, midway between the front end and rear end thereof.
  • the push button may further be configured to move along transverse axis Z of the elongated body, plunging into the elongated body when operated by a user to trigger the release of the exchangeable razor blade cartridge from the razor handle.
  • the elongated body of the razor handle may internally house a pushrod.
  • the pushrod may be glidingly supported in a sleeve held within the elongated body, so as to mechanically connect the push button to the release mechanism.
  • Pushrod may comprise a rounded end configured to engage an inclined surface of the push button.
  • the inclined surface may thus form a cam surface, and the rounded end of pushrod a cam follower, in a cam mechanism configured to convert a plunging motion of push button along a transverse axis Z intersecting longitudinal axis Y into a gliding motion of the push rod along longitudinal axis Y to actuate the release mechanism.
  • Document US 2017/0282392 A1 discloses razor having a handle with an articulable joint intermediate the cutting blade and the portion of the handle grasped by a user.
  • the joint is made of resilient elastomeric memory material so that the head of the razor may be moved from an initial position to a displaced position and back to the initial position.
  • the joint has at least one undercut to reduce its thickness and facilitate the moving of the head.
  • the joint is defined by the pivotal connection of an upper portion and lower portion of the razor by a pivot joint defined by opposed projections extending from opposed sides of upper portion, which are received in mating depressions provided on an inside surface of forks.
  • the lower portion of the razor is made from elastic materials such as rubber, plastic, silicone rubber, or other natural or synthetic flexible material, and, thus, the upper portion may be snap-fitted to the bottom portion by the outward bending of the forks to allow the projections to enter the depressions and then snap back to form a pivotal joint.
  • the lower portion has a spring channel into which a coil spring may be inserted to resiliently bias the joint to an initial position.
  • a plunger intermediates between the spring and the upper portion. More particularly, the plunger has an upper cam surface that abuts against a cam surface on the upper portion.
  • a personal care device is provided as defined in claim 1.
  • personal care shall mean the nurture (or care) of the skin and of its adnexa (i.e. hairs and nails) and of the teeth and the oral cavity (including the tongue, the gums etc.), where the aim is on the one hand the prevention of illnesses and the maintenance and strengthening of health (“care”) and on the other hand the cosmetic treatment and improvement of the appearance of the skin and its adnexa. It shall include the maintenance and strengthening of wellbeing. This includes skin care, hair care, and oral care as well as nail care. This further includes other grooming activities such as beard care, shaving, and depilation.
  • a "personal care device” thus means any device for performing such nurturing or grooming activity, e.g.
  • (cosmetic) skin treatment devices such as skin massage devices or skin brushes; wet razors; electric shavers or trimmers; electric epilators; and oral care devices such as manual or electric toothbrushes, (electric) flossers, (electric) irrigators, (electric) tongue cleaners, or (electric) gum massagers.
  • an epilation device was chosen to present details of the proposed personal care device. To the extent in which the details are not particular to an epilation device, the proposed technology can be used in any other personal care device.
  • the present disclosure is concerned with a personal care device that has a treatment head and a handle, where the treatment head can be swiveled or pivoted with respect to the handle around a swivel or pivot axis.
  • the treatment head has a rest position (which may also be called a center position in case the rest position is about centric with respect to two swivel directions) out of which the head can be swiveled or pivoted into a least one angular direction against a return spring force provided by a spring element.
  • the treatment head and the body are biased against each other in the rest position by a biasing force that needs to be overcome to swivel the head out of the rest position.
  • the biasing force and the return spring force are provided by a spring element acting between a pin and a cam element, where the pin has a pin head that is in contact with a cam surface of the cam element.
  • the spring element biases the pin head and the cam surface against each other with a certain non-zero minimal value (e.g. 2 N). While it is here mentioned that the personal care device has one spring element, this only means that one spring element is needed, but this shall not exclude that further spring elements are used to provide the total spring return force. In order to pivot the treatment head around the pivot axis, first the biasing force needs to be overcome and then the pin head glides over the cam surface if the applied force increases further.
  • the biasing force thus provides a good feedback to the user as first the biasing force needs to be overcome before the head indeed pivots.
  • the pivoting starts once a force is applied.
  • the biasing force may generally be in a range of between 0.5 N and 8 N, in particular in a range of between 1.0 N and 5.0 N, further in particular in a range of between 1.5 N and 4.0 N, and even further in particular in a range of between 2.0 N and 3.0 N.
  • the spring constant of the spring element may be in a range of between 0.05 N/mm and 1.0 N/mm, in particular in a range of between 0.1 N/mm and 0.4 N/mm, and further in particular in a range of between 0.15 N/mm and 0.25 N/mm. While in the discussed embodiments, the biasing force pushes the pin head against the cam surface, this shall not exclude that the cam surface is biased against the pin head, i.e. where the cam element can move, and the pin head can only pivot.
  • the cam surface is in particular shaped such that the spring force applied by the spring element increases with increasing pivot angle.
  • the shape of the cam surface is such that the distance between the pivot axis and the cam surface decreases and thus the pin is forced to move towards the pivot axis (or the cam element is forced to move away from the pivot axis) and by this motion the spring element is deformed in a manner that the spring force with which the pin head is pushed against the cam surface is increased.
  • the cam surface would follow a circular function with respect to the pivot axis (i.e. the cam surface would be a portion of circle with the pivot axis being in the center of the circle), neither the pin nor the cam element would move, and the spring force would not change.
  • the cam surface may follow any arbitrary function in dependence from the pivot angle as long as the distance between cam surface and pivot axis is essentially monotonously increased.
  • the increasing spring force acts against the deflection of the treatment head and tries to return the treatment head into the rest position.
  • the spring element may be a coil spring that is compressed when the pin moves towards the swivel axis to increase the spring force. But the spring element may also be a leaf spring that is bent, a torsion spring that is twisted etc. As already said, instead of one spring element, two or more spring elements may be used.
  • the cam surface may be shaped such that the distance between cam surface and pivot axis decreases linearly with the pivot angle.
  • the cam surface may also be shaped so that any other distance decreasing function is achieved. This shall not exclude that the cam surface provides for one or several lock positions at lock pivot angles, where the pivot angle would be maintained without applied external force.
  • the treatment head can only be pivoted out of the rest position into one pivot direction, i.e. a clockwise direction or a counter-clockwise direction with respect to the rest position, the treatment head can in some embodiments be pivoted in a plane into a clockwise and into a counter-clockwise direction out of the rest position.
  • the maximum pivot angle in clockwise direction may have the same value as the maximum pivot angle in counter-clockwise direction (e.g. 13 degrees). Alternately, the maximum pivot angle may have different values in clockwise and counter-clockwise direction (e.g. 6 degrees and 20 degrees).
  • the personal care device may comprise at least one stopper element to mechanically limit the deflection of the treatment head out of the rest position so that a maximum pivot angle cannot be exceeded. Two stopper elements may be present in case the treatment head can be pivoted in clockwise and counter-clockwise direction.
  • the pin head has a contact surface for contacting the cam surface.
  • the contact surface may be shaped to provide an essentially point-like or line-like contact region between the contact surface of the pin head and the cam surface.
  • the contact surface of the pin head is shaped as a portion of a sphere or a portion of a cylinder.
  • the pin head is a cylinder or a sphere that is in particular pivotably mounted at the pin. Such a design may help to reduce friction between the contact surface of the pin head and the cam surface.
  • the cam surface has a depression to define the rest position.
  • the depression is smaller in diameter than the diameter of the pin head and in particular smaller than the size of the contact surface so that the contact surface of the pin head has two point-like or line-like contact regions with the cam surface in the rest position.
  • the depression may start and end at the contact points or contact lines of the contact surface of the pin head with the cam surface. This leads to a better-defined rest position and balances out tolerances.
  • the pin may be guided by any suitable linear bearing that in particular pivots together with the pin.
  • the pin is guided in a hollow of a pin mount, the pin mount providing a slide bearing.
  • the materials of pin and pin mount may be chosen to allow for self-lubrication.
  • pin and pin mount While it may be possible to manufacture pin and pin mount by machining a metal block, a plastic block or a ceramic block to achieve very low tolerance so that the inner hollow of the pin mount can precisely receive the pin, it may be less costly to realize at least the hollow pin mount from a thermoplastic material so that the hollow pin mount can be made by plastic injection molding, where many pin mounts can be made in parallel and with a low cycle time.
  • the hollow in such an injected pin mount may then be differently shaped than the pin.
  • the pin may have a circular cross section and the hollow of the pin mount may have a polygonal, e.g. a hexagonal cross section.
  • the pin mount has at least two in particular oppositely arranged guiding surfaces that guide the pin.
  • the pin mount may have at least four guiding surfaces where two guiding surfaces are disposed at a first longitudinal position and two guiding surfaces are arranged at a second longitudinal position, respectively.
  • the pin is guided at two positions along its length extension, leading to a precise linear guidance and a relief for the design of the pin mount as the pin mount does not need to guide the pin along its complete length inside of the pin mount.
  • the hollow in the pin mount may be realized as a blind hole. Instead of a pure blind hole, the hollow may continue as a smaller diameter bore, which bore may be used in the step of mounting the spring element.
  • the spring element may at least partially be arranged in a hollow of the pin where the hollow in the pin may be concentric with the longitudinal axis of the pin.
  • the spring element may generally be realized as a coil spring.
  • One end of the spring element may abut an abutting surface of the hollow in the pin and a second end of the spring element may abut an abutting surface in the hollow of the pin mount.
  • the abutting surface in the pin mount may be precisely dimensioned to tightly receive the second end of the spring element so that the second end of the spring element cannot move with respect to the pin mount.
  • the abutting surface in the pin mount may be provided by a recess in the pin mount. As was already indicated, the hollow may continue as a smaller diameter bore.
  • a metal pin may be slid through the smaller diameter bore, on which pin the spring element (e.g. the coil spring) may be mounted until the pin that compresses the spring element is mounted in the hollow.
  • the metal pin may be retracted from the smaller diameter bore once the mounting of pin and spring element has happened.
  • the hollow in the pin mount may be defined by a precisely machined core in the plastic injection molding of the pin mount.
  • the guiding surfaces (i.e. the distance between the guiding surfaces) of the hollow may then be realized with high quality, e.g. a tolerance of ⁇ 0.03 mm may be applied for the guiding surfaces.
  • the same or a similar low tolerance may be applied for the respective cooperating outer surface portions of the pin itself, so that the pin is finally guided with high precision and with neglectable play or gaps.
  • the pin head or the cam element may be made at least in the area of the contact surface of the pin or the cam surface from one of the following materials: a plastic material, in particular a hard plastic material having a Shore D hardness of at least 40, further in particular a reinforced plastic material; a lightweight metal or a metal alloy having a specific density in the range of between 2 g/cm 3 and 5 g/cm 3 such as titanium or aluminum; a heavy metal or a metal alloy having a specific density in the range of between 5 g/cm 3 and 20 g/cm 3 such as steel, brass, or bronze; or a ceramic material such as silicon carbide or tungsten carbide.
  • a plastic material in particular a hard plastic material having a Shore D hardness of at least 40, further in particular a reinforced plastic material
  • a lightweight metal or a metal alloy having a specific density in the range of between 2 g/cm 3 and 5 g/cm 3 such as titanium or aluminum
  • a heavy metal or a metal alloy having a
  • Fig. 1 is a depiction of an example embodiment of a personal care device 1 realized as a mechanical epilator.
  • the personal care device 1 comprises a detachable attachment 10 and a handle 20.
  • the detachable attachment 10 comprises a treatment head 100 that is arranged to be pivotable with respect to a body 200 of the personal care device 1 around a pivot axis A so that the treatment head 100 can pivot into a clockwise direction and a counter-clockwise direction around the pivot axis A as is indicated by double arrow R1.
  • the treatment head 100 is here realized as an epilation head that comprises a treatment head housing 101 and a treatment unit 120 realized as a mechanical epilation cylinder.
  • the treatment head 100 comprises a skin contact element 110 that is arranged to be pivotable around a pivot axis S as is indicated by double arrow R2.
  • the pivot axis S is aligned with a center axis of the rotatable mechanical epilation cylinder 120.
  • the additional pivotable skin contact element 110 is an optional feature.
  • a collar 180 is fixedly connected with the head housing 101 of the treatment head. The collar 180 is arranged to immerse into a frame 190 when the treatment head 100 is pivoted around the pivot axis A.
  • the frame 190 is a part of the detachable attachment 10 but is fixedly secured to the handle 20 in the attached state by in particular a mechanical fixation means such as one or several snap hooks.
  • the frame 190 is part of the detachable attachment 10, it is fixedly secured to the handle 20, i.e. does not pivot or move when the treatment head is moved, and the handle 20 and the frame 190 together form the body 200 of the personal care device 1.
  • the treatment head may be realized as detachable attachment and frame and collar are provided at the handle.
  • the treatment head together with the collar form the detachable attachment and the frame is realized as a portion of the handle.
  • the handle 200 has a handle housing 201 that may house a battery or a rechargeable accumulator and a drive unit for driving the treatment unit 120.
  • the treatment unit is not driven and may only be supplied with electric energy.
  • the treatment unit is driven and is supplied with energy.
  • the treatment unit is neither actively driven nor supplied with energy.
  • the handle 200 may comprise one or several switches 210 such as an ON/OFF switch or a mode switch etc.
  • the handle may comprise any other feature that a skilled person would provide at a handle, e.g. a light source 220 for illuminating the area to be treated.
  • Fig. 2 is a depiction of an example partly cut-open detachable attachment 10A comprising a treatment head 100A having a treatment head housing 101A to which a collar 180A is fixedly mounted.
  • a frame 190A is pivotably arranged with respect to the treatment head 100A and collar 180A.
  • a support structure 170A is mounted at the frame 190A.
  • the support structure 170A and/or the frame 190A has coupling means for coupling the detachable attachment 10A to a handle of a personal care device as was discussed with respect to Fig. 1 .
  • the support structure 170A carries a cam element 150A.
  • a pin unit 160A is fixedly mounted at the treatment head 100A and/or collar 160A.
  • the pin unit 160A comprises a pin mount 161A and a pin 165A, where a spring element 169A is disposed between the pin mount 161A and the pin 165 A.
  • the pin 165A is in contact with a cam surface 151A of the cam element 150A.
  • the pin 165A is here shown in a rest position.
  • the spring element 169A which is here realized as a coil spring, is compressed and thus pushes the pin 165A against the cam surface 151A of the cam element 150A with a predetermined biasing force F.
  • the technical design of the pin unit 160A and the interaction between the pin 165A and the cam element 150A will be explained in more detail in the following with reference to Figs. 3A, 3B , 4A, and 4B .
  • the cam element is spring-loaded, and that the cam element may then be guided by a linear guide.
  • Fig. 3A is a detail cross-sectional view of the pin unit 160A and cam element 150A when the pin 165A is in a rest position.
  • the pin unit 160A comprises a pin mount 161A having a hollow 162A, which will be more in detail described with reference to Figs. 4A and 4B , a pin 165A disposed partly in the hollow 162A and a spring element 169A that biases a pin head 166A against a cam surface 151A of the cam element 150A with a biasing force F.
  • the pin 165A has a centrical hollow or bore 167A in which the spring element 169A is disposed.
  • the spring element 169A is here realized as a coil spring, which shall not exclude other realization, e.g. the spring element may be an elastically deformable resilient rubber element.
  • One end 1692A of the spring element 169A abuts an abutting surface 1651A provided in the hollow 167A.
  • the pin head 166A has an outer contact surface 1661A that is in frictional contact with a cam surface 151A.
  • the cam surface 151A of the cam element 150A defines a rest position of the pin unit 160A. In order to pivot the pin unit 160A out of the rest position, the pin head 166A must move along the cam surface 151A, which is shaped such that the pin 165A will be moved towards a pivot axis R with increasing pivot angle as shown in Fig. 3B , which leads to a compression of the spring element 169A and hence to an increase of the force F with which the pin head 161A is pushed against the cam element 150A.
  • the cam element 150A has a depression 152A that is arranged centrically on the cam element 150A, i.e.
  • the contact surface 1661A of the pin head 166A is cylindrical at least in those areas that will come into contact with the cam surface 151A.
  • the size of the depression 152A is smaller than the extension of the contact surface 1661A of the pin head 166A so that the pin head 166A contacts the cam element 150A at two contact points CP1 and CP2 on the left and the right of the depression 152A (as the cam surface 151A and the contact surface 1661A extend in three-dimensional space, the contact points CP1 and CP2 are essentially contact lines or contact areas, but for sake of simplicity, it is here referred to as contact points).
  • the depression 152A is dimensioned such that the contact points CP1 and CP2 are located just at the border of the depression 152A. The depression 152A tends to balance tolerances in the parts.
  • the cam element 150A and the cam surface 151A are symmetric with respect to the rest position so that the rest position is also a center position.
  • the personal care device may comprise stopper elements that inhibit any pivoting beyond a maximum pivot angle.
  • the personal care device may comprise two such stopper elements, where one stopper element is limiting the pivot range in clockwise direction and the other stopper element is limiting the pivot range in counter-clockwise direction, where clockwise and counter-clockwise is defined with respect to the paper plane. While the cam element 150A is here symmetric, the stopper elements may provide for non-symmetric pivot ranges in clockwise and counter-clockwise direction.
  • the pin 165A may comprise an extension that is arranged in a groove or cutout of the pin mount 161A (or vice versa) so that the pin 165A is secured at the pin mount 161A during the assembly process.
  • Fig. 3B a somewhat larger detail of the pin unit 160A and cam element 150A is shown, where the pin unit 160A is shown in a clockwise pivoted state.
  • the longitudinal extension direction of the pin unit 160A is indicated by axis L2, which is pivoted against the rest position axis L1 by a pivot angle ⁇ .
  • the shown pivoting state of the pin unit 160A of course means that the treatment head is likewise pivoted by the pivot angle ⁇ against the body of the personal care device.
  • the pivoting occurs around a pivot axis R that is defined by a bearing and/or linkage that pivotably connects the treatment head and the body of the personal care device, e.g.
  • the treatment head and the body may be pivotably connected by means of a cardan joint.
  • the contact surface 1661A of the pin head 166A is in contact with the cam surface 151A at a contact point CP3.
  • the contact point CP1 on the contact surface 1661A of the pin head 166A shown in Fig. 4A slightly moves when the pin 165A is pivoted out of the rest position.
  • the pin head 165A has only one contact point CP3 with the cam element 150A once it is pivoted out of the rest position.
  • the cam surface 151A is shaped such that the distance D( ⁇ ) between the contact point CP3 and the pivot axis R monotonously decreases with increasing pivot angle ⁇ .
  • the cam surface is shaped in a manner that results in a monotonous decrease of the distance D( ⁇ ) between the contact point CP3 and the pivot axis R with increasing pivot angle ⁇ .
  • the cam surface can take other shapes, i.e. a shape where the distance decreases in a potential manner or a shape supporting an intermediate locking position at a lock angle.
  • the materials from which the pin head 166A are made at least in the area of the contact surface 1661A and the cam element 150A at least in the area of the cam surface 151A may be chosen such that the friction between the two parts does not lead to self-locking.
  • the friction coefficient between both materials may be chosen to be below 0.4, in particular below 0.35 such as 0.3 or 0.25 or 0.2.
  • the pin head may be realized as a cylinder or a sphere that is pivotably mounted at the pin and thus self-locking issues may be overcome.
  • the pin fits smoothly into the pin mount.
  • the pin and the pin mount may be precisely shaped aluminum parts or the like and they may be lubricated with a suitable lubricant.
  • an example embodiment of the pin unit 160A comprising the pin 165A and the pin mount 161A is discussed that allows making the parts by plastic injection molding, where the tolerances are higher than in a metal shaping process and where the manufacturing process enforces certain necessities such as deforming angles that are accommodated by the design.
  • the pin 165A and the pin mount 161A are not realized as parts that smoothly fit into each other, but where still a good guiding quality of the linear motion of the pin 165A is achieved.
  • Fig. 4A is a cross-sectional detail of the pin unit 160A
  • Fig. 4B is another cross-sectional detail of the pin unit 160A taken along plane A-A as indicated in Fig. 4A .
  • the pin unit 160A comprises the pin mount 161A, the pin 165A and the spring element 169A. With respect to the spring element 169A it is referred to the previous paragraphs.
  • the pin 165A is guided by the pin mount 161A.
  • the pin mount 161A has a hollow 162A realized as a bore having a blind hole end 164A.
  • the hollow 162A in the pin mount 161A tapers from its open end at the front of the pin mount 161A where the pin 165A projects towards the cam element 150A to the blind hole end 164A. This tapering is necessary to allow deforming the pin mount 161A from a core defining the hollow 162A at the end of a plastic injection molding process.
  • the draft angle is varied over the longitudinal extension length of the hollow 162A. From front towards blind hole end 164A, the draft angle is first very small in a front region 1611A, then the draft angle is relatively large in a middle region 1612A, and the draft angle becomes very small again in a blind hole end region 1613A.
  • guiding surfaces are provided that have a low specified tolerance.
  • region 1611A which is in longitudinal extension direction located close to the front of the pin mount 161A
  • two oppositely arranged guiding surfaces GS21 and GS22 are provided in region 1613A, which is in longitudinal extension direction located close to the blind end hole 164A of the pin mount 161A.
  • two oppositely arranged guiding surfaces GS11 and GS12 are provided in region 1613A.
  • the pin 165A is also generally tapering from a front region 1653A to a back-end region 1654A. But as was described for the hollow 162A of the pin mount 161A, the pin 165A has low tolerance areas at the front and at the back that coincide in the mounted state with the longitudinal locations of the guiding surfaces in the hollow 162A. As can best be seen in Fig. 4B , the pin 165A has an essentially circular cross-sectional outer shape and the hollow 162A has an essentially hexagonal cross-sectional inner shape. Thus, the guiding surfaces, of which GS11 and GS 12 are shown in Fig. 4B , provide an essentially line-like guiding contact with the pin 165A.
  • Non-guiding surfaces NGS11 to NGS 14 are provided with a nominal distance to the pin 165A.
  • the same type of arrangement is provided in the front region 161A. That leads to a precise guiding of the pin's movement in z direction (where the z-direction is indicated in Fig. 4A ) and a precise location of the pin 165A in x-direction.
  • the contact of the pin 165A with the cam element 150A avoids that the pin 165A can tilt and only some freedom of motion in y-direction is allowed (the y-direction is indicated in Fig. 4B ).

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Gears, Cams (AREA)
  • Brushes (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Processing Of Meat And Fish (AREA)
  • Dry Shavers And Clippers (AREA)

Claims (14)

  1. Körperpflegevorrichtung (1) mit einem Behandlungskopfstück (100), der um eine Drehachse (A) herum hinsichtlich eines Körpers (200) der Körperpflegevorrichtung (1) drehbar gelagert ist, die Körperpflegevorrichtung (1) umfassend:
    eine Nadel (165A), die ein Nadelkopfstück (166A) aufweist, wobei die Nadel (165A) an einem von dem Behandlungskopfstück (100) oder dem Körper (200) bereitgestellt ist;
    ein Nockenelement (150A), das eine Nockenoberfläche (151A) aufweist, das an dem anderen von dem Behandlungskopfstück (100) oder dem Körper (200) bereitgestellt ist;
    ein Federelement (169A), das das Nadelkopfstück (166A) und die Nockenoberfläche (151A) gegeneinander vorspannt;
    wobei das Nadelkopfstück (166A) mit der Nockenoberfläche (151A) in Kontakt steht und die Nockenoberfläche (151A) derart geformt ist, dass sie eine Ruheanordnung bestimmt, an der die Vorspannfederkraft, die durch das Federelement (169A) bereitgestellt wird, mit der das Nadelkopfstück (166A) und die Nockenoberfläche (151A) gegeneinandergedrückt werden, einen Mindestwert ungleich Null aufweist;
    wobei ein Drehen des Kopfstücks (100) um die Drehachse (A) herum das Nadelkopfstück (166A) veranlasst, sich entlang der Nockenoberfläche (151A) zu bewegen und die Nockenoberfläche (151A) ferner derart geformt ist, dass die Federkraft (F), die das Nadelkopfstück (166A) und die Nockenoberfläche (151A) gegeneinanderdrückt, mit zunehmendem Drehwinkel (α) zunimmt; und
    dadurch gekennzeichnet, dass
    das Nadelkopfstück (166A) eine Kontaktoberfläche (1661A) zum Inkontaktbringen mit der Nockenoberfläche (151A) aufweist, wobei die Kontaktoberfläche (1661A) wenigstens einen Abschnitt einer kugelförmigen Oberfläche oder einer zylindrischen Oberfläche ist und die Nockenoberfläche (151A) eine Depression (152A) aufweist, um die Ruheanordnung zu bestimmen, wobei die Depression (152A) kleiner als ein Durchmesser der Kugel, die die kugelförmige Oberfläche bestimmt, oder des Zylinders, der die zylindrische Oberfläche bestimmt, ist und wobei die Depression (152A) kleiner als der Durchmesser des Nadelkopfstücks (166A) ist und kleiner als die Größe der Kontaktoberfläche (1661A) ist, sodass die Kontaktoberfläche (1661A) des Nadelkopfstücks (166A) zwei punktartige oder strichartige Kontaktregionen (CP1, CP2) mit der Nockenoberfläche (151A) in der Ruheanordnung aufweist.
  2. Körperpflegevorrichtung nach Anspruch 1, wobei die Nadel (165A) in einer Vertiefung (162A) einer Nadellagerung (161A) geführt ist.
  3. Körperpflegevorrichtung nach Anspruch 2, wobei die Nadellagerung (161A) wenigstens zwei Führungsoberflächen (GS21, GS22) zum Führen der Nadel (165A) aufweist, insbesondere wobei die Nadellagerung (161A) wenigstens vier Führungsoberflächen (GS11, GS12, GS21, GS22) aufweist, wo zwei entgegengesetzt gestaltete Führungsoberflächen an einer ersten Längsanordnung (1611A) in der Nadellagerung (161A) bereitgestellt sind und zwei weitere entgegengesetzt gestaltete Führungsoberflächen an einer zweiten Längsanordnung (1613A) gestaltet sind.
  4. Körperpflegevorrichtung nach Anspruch 2 oder 3, wobei der Nadelabschnitt, der durch die Nadellagerung (161A) geführt wird, eine im Wesentlichen kreisförmige Querschnittsform aufweist und ein Abschnitt in der Nadellagerung (161A) zum Führen der Nadel eine im Wesentlichen vieleckige Querschnittsform, insbesondere eine sechseckige Form, aufweist.
  5. Körperpflegevorrichtung nach einem der Ansprüche 3 bis 4, wobei die Nadellagerung (161A) und die geführten Teile der Nadel (165A) wenigstens in dem Bereich, wo die Nadel (165A) durch die Nadellagerung (161A) geführt ist, eine Toleranz von ±0,03 mm oder darunter aufweisen.
  6. Körperpflegevorrichtung nach einem der Ansprüche 2 bis 5, wobei das Federelement (169A) teilweise in einer sich in Längsrichtung erstreckenden mittigen Vertiefung (167A) in der Nadel (165A) und teilweise in der Vertiefung (162A) der Nadellagerung (161A) gestaltet ist.
  7. Körperpflegevorrichtung nach einem der Ansprüche 2 bis 6, wobei das Federelement (169A) eine sich in Längsrichtung erstreckende Spiralfeder ist, die ein erstes Ende (1691A), das in einer Aussparung (163A) der Nadellagerung (161A) gestaltet ist, aufweist, wobei die Aussparung (163A) bemessen ist, um das erste Ende (1691A) zu beschränken, sodass sich das erste Ende im Wesentlichen nicht bewegen kann (1691A).
  8. Körperpflegevorrichtung nach einem der Ansprüche 1 bis 7, wobei die Nockenoberfläche (151A) eine im Allgemeinen konkave Form aufweist, die sich zu dem Nockenoberflächenabschnitt, der den Ruhepunkt bestimmt, hin verjüngt, insbesondere wobei die Nockenoberfläche (151A) hinsichtlich der Ruheanordnung symmetrisch geformt ist.
  9. Körperpflegevorrichtung nach einem der Ansprüche 1 bis 8, wobei die Nockenoberfläche (151A) durch eine Funktion hinsichtlich der Drehachse, die durch die Formel D(α) = D0 - ΔD·(α/Δα) gegeben ist, bestimmt ist, wobei D der Abstand eines Kontaktpunkts (CP1; CP2) des Nadelkopfstücks (166A) und der Nockenoberfläche (151A) zu der Drehachse (A) ist, α der Drehwinkel hinsichtlich der Ruheanordnung ist, D0 der jeweilige Abstand in der Ruheanordnung ist und ΔD und Δα Parameter, die die Steigung der Funktion bestimmen, sind.
  10. Körperpflegevorrichtung nach einem der Ansprüche 1 bis 9, wobei wenigstens das Nadelkopfstück (166A) aus einem der folgenden Materialien hergestellt ist: einem Kunststoffmaterial, insbesondere einem Hartkunststoffmaterial, das eine Shore-D-Härte von wenigstens 40 aufweist, ferner insbesondere einem verstärkten Kunststoffmaterial; einem Leichtmetall oder einem Metallgemisch, das eine spezifische Dichte in dem Bereich von zwischen 2 g/cm3 und 5 g/cm3 aufweist, wie Titan oder Aluminium; einem Schwermetall oder einem Metallgemisch, das eine spezifische Dichte in dem Bereich von zwischen 5 g/cm3 und 20 g/cm3 aufweist, wie Stahl, Messing oder Bronze.
  11. Körperpflegevorrichtung nach einem der Ansprüche 1 bis 10, wobei wenigstens die Nockenoberfläche (151A) aus einem der folgenden Materialien hergestellt ist: einem Kunststoffmaterial, insbesondere einem Hartkunststoffmaterial, das eine Shore-D-Härte von wenigstens 40 aufweist, ferner insbesondere einem verstärkten Kunststoffmaterial; einem Leichtmetall oder einem Metallgemisch, das eine spezifische Dichte in dem Bereich von zwischen 2 g/cm3 und 5 g/cm3 aufweist, wie Titan oder Aluminium; einem Schwermetall oder einem Metallgemisch, das eine spezifische Dichte in dem Bereich von zwischen 5 g/cm3 und 20 g/cm3 aufweist, wie Stahl, Messing oder Bronze; Keramikmaterial wie Siliciumcarbid oder Wolframcarbid.
  12. Körperpflegevorrichtung nach einem der Ansprüche 1 bis 11, wobei die Federkonstante des Federelements (169A) in einem Bereich von zwischen 0,05 N/mm und 1,0 N/mm, insbesondere in einem Bereich von zwischen 0,1 N/mm und 0,4 N/mm und ferner insbesondere in einem Bereich von zwischen 0,15 N/mm und 0,25 N/mm liegt.
  13. Körperpflegevorrichtung nach einem der Ansprüche 1 bis 12, wobei die Vorspannkraft (F), mit der das Nadelkopfstück (166A) gegen die Nockenoberfläche (151A) gedrückt wird, durch einen Faktor in dem Bereich von zwischen 1,025 bis 1,5, insbesondere in dem Bereich von zwischen 1,05 bis 1,25 und ferner insbesondere in einem Bereich von zwischen 1,08 und 1,15, aus der Mittelanordnung zu einer maximalen Drehwinkelanordnung zunimmt.
  14. Körperpflegevorrichtung nach einem der Ansprüche 1 bis 13, wobei die Vorspannkraft (F), mit der das Nadelkopfstück (166A) gegen die Nockenoberfläche (151A) in der Ruheanordnung gedrückt wird, in dem Bereich von zwischen 0,5 N und 8 N, insbesondere in einem Bereich von zwischen 1 N und 5 N, ferner insbesondere in einem Bereich von zwischen 1,5 N und 4,0 N und noch ferner insbesondere in einem Bereich von zwischen 2,0 N und 3,0 N liegt.
EP18209986.1A 2018-12-04 2018-12-04 Körperpflegevorrichtung mit schwenkbarem behandlungskopf Active EP3663058B1 (de)

Priority Applications (6)

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ES18209986T ES2946737T3 (es) 2018-12-04 2018-12-04 Dispositivo de higiene personal con cabezal de tratamiento pivotable
EP18209986.1A EP3663058B1 (de) 2018-12-04 2018-12-04 Körperpflegevorrichtung mit schwenkbarem behandlungskopf
KR1020217017234A KR20210087992A (ko) 2018-12-04 2019-11-19 피벗 가능한 처리 헤드를 갖는 개인 케어 장치
CN201980073901.4A CN113015606B (zh) 2018-12-04 2019-11-19 具有可枢转处理头部的个人护理装置
JP2021531408A JP7348284B2 (ja) 2018-12-04 2019-11-19 枢動可能な処置ヘッドを有するパーソナルケアデバイス
PCT/IB2019/059937 WO2020115592A1 (en) 2018-12-04 2019-11-19 Personal care device with pivotable treatment head

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EP18209986.1A EP3663058B1 (de) 2018-12-04 2018-12-04 Körperpflegevorrichtung mit schwenkbarem behandlungskopf

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Citations (1)

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US20170282392A1 (en) * 2014-03-24 2017-10-05 Flexhandle, L.L..C. Razor with handle having articulable joint

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Publication number Priority date Publication date Assignee Title
GB2116470B (en) * 1982-03-12 1985-09-25 Gillette Co Safety razors
JP3716353B2 (ja) * 1995-07-31 2005-11-16 九州日立マクセル株式会社 ロータリ式電気かみそり
AT2988U1 (de) * 1998-07-24 1999-08-25 Payer Lux Elektroprod Trockenrasierapparat
FR2823080B1 (fr) 2001-04-06 2003-05-30 Seb Sa Appareil a epiler
JP5576175B2 (ja) * 2010-04-27 2014-08-20 日立マクセル株式会社 電気かみそり
EP3398737A1 (de) * 2017-05-05 2018-11-07 BIC Violex S.A. Rasierergriff

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Publication number Priority date Publication date Assignee Title
US20170282392A1 (en) * 2014-03-24 2017-10-05 Flexhandle, L.L..C. Razor with handle having articulable joint

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JP7348284B2 (ja) 2023-09-20
CN113015606B (zh) 2023-04-11
JP2022511000A (ja) 2022-01-28
CN113015606A (zh) 2021-06-22
KR20210087992A (ko) 2021-07-13
EP3663058A1 (de) 2020-06-10
WO2020115592A1 (en) 2020-06-11

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