EP4388929A1 - Plattenanordnung für einen epilierer - Google Patents

Plattenanordnung für einen epilierer Download PDF

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Publication number
EP4388929A1
EP4388929A1 EP22214433.9A EP22214433A EP4388929A1 EP 4388929 A1 EP4388929 A1 EP 4388929A1 EP 22214433 A EP22214433 A EP 22214433A EP 4388929 A1 EP4388929 A1 EP 4388929A1
Authority
EP
European Patent Office
Prior art keywords
disc
metal
plastic
hair
epilator
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.)
Pending
Application number
EP22214433.9A
Other languages
English (en)
French (fr)
Inventor
Joost Tomas GLAZENBURG
Geert Willem DE GOEIJ
Alexander PATJE
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
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 Koninklijke Philips NV filed Critical Koninklijke Philips NV
Priority to EP22214433.9A priority Critical patent/EP4388929A1/de
Priority to PCT/EP2023/085019 priority patent/WO2024132612A1/en
Publication of EP4388929A1 publication Critical patent/EP4388929A1/de
Pending legal-status Critical Current

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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
    • A45D26/0028—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers with rotating clamping elements with rotating discs or blades

Definitions

  • the present invention relates to epilating devices and in particular to the tweezer portion of the epilator.
  • Epilating devices of many different types are known for the purpose of removing unwanted hair from various regions of a user's body.
  • the principles of operation vary greatly but amongst these devices, a sizeable subgroup operates through the use of rotating tweezer mechanisms which seize hairs and actively extract them from the skin follicle. As the tweezer rotates further it releases the hair.
  • tweezers is used to denote an arrangement that is capable of opening and closing to grip and extract a hair or hairs.
  • Epilady TM device which uses the rotation of a coil spring to capture and release hairs.
  • EP532106B1 Another type of device is disclosed in EP532106B1 which uses rotating disks which are pivotable towards each other under the influence of a compression member.
  • This invention relates to epilating devices which use a series of adjacent discs to implement a set of tweezers.
  • the effectiveness of the operation of the tweezer type epilator depends in part on the gripping force applied to the hairs by the tweezers, in use.
  • the gripping force depends on the friction and hence the design of the portions which form the tweezers. There is a desire to improve the gripping force while enabling a low cost design.
  • a disc arrangement for an epilator comprising a set of epilator discs, wherein each disc has peripheral hair gripping portions, wherein adjacent discs are for performing a tweezer hair removal function between them at a set of hair removal locations, wherein at each hair removal location, there is:
  • the disc arrangement of the invention may be considered to be a hybrid design, with different materials (plastic and metal) facing each other to define each tweezer. This provides an improvement to existing disc epilator systems by increasing the grip of the tweezers on the hairs needed for extraction form the skin.
  • the performance may be improved compared to an all-plastic design, and the design may also be more suitable for industrialization compared to an all metal design.
  • metal and plastic surfaces also gives a lower sound output and also a lower risk of hair breakage compared to a design with metal at both sides.
  • Each disc for example comprises first peripheral hair gripping regions which are metal and second peripheral hair gripping regions which are plastic.
  • metal-plastic tweezers may be formed using a single disc design, by mating the plastic part of one disc with the metal parts of an adjacent disc.
  • the first peripheral hair gripping regions for example face one side of the disc and the second peripheral hair gripping regions face an opposite side of the disc.
  • the first and second peripheral hair gripping regions are for example alternated around the disc. In one example, there are four tweezer positions for each disc spaced at 90 degrees. There are then two tweezers formed with the adjacent disc on one side and two tweezers formed with the adjacent disc on the other side.
  • the first peripheral hair gripping regions may have a textured surface.
  • the metal portion thus has a textured surface, for example formed by laser etching. This improves grip.
  • Each disc may comprise a metal base which defines the first hair gripping regions and an overmolded plastic portion which defines the second hair gripping regions. This enables easy manufacture, with a metal base which is large enough to enable simple overmolding and a sufficient amount of plastic for the overmolding process.
  • the overmolded plastic portion for example comprises embedded particles or fibers which are harder than the metal of the metal base.
  • the particles or fibers roughen their metal counterpart over time to obtain optimized grip on the hairs and maintain proper surface roughness over the lifetime of the epilator.
  • the embedded particles or fibers for example comprise glass particles or fibers.
  • the invention also provides an epilator comprising:
  • the invention provides a disc arrangement for an epilator, comprising a disc arrangement for an epilator comprises a set of epilator discs.
  • Each disc has peripheral hair gripping portions, wherein adjacent discs are for performing a tweezer hair removal function between them at a set of hair removal locations.
  • At each hair removal location there is a first portion of a first disc which is metal and second portion of a second disc which is plastic.
  • Fig. 1 shows a known epilating device 1 to which the invention may be applied.
  • the epilating device comprises an epilation opening in which a disc assembly 16 is mounted.
  • the disc assembly comprises central discs 12 and end discs 10, 14 which are rotated via a drive 2 provided within the epilating device.
  • Fig. 2 shows an example of a known design for the central discs 12. It has a substantially circular shape.
  • Circumferential regions 18, 20 of the disc 12 are made from a relatively hard material, for example a glass-filled plastic with at least 40% glass fibers. These circumferential regions function as gripping regions.
  • the other regions are made from a softer material having good gliding properties such as a PTFE-filled plastic.
  • the combination of hard and soft materials means the contact surfaces of the tweezers can be prevented from unacceptable wear.
  • the gripping regions 18, 20 form part of a clamping portion intended to interact with further clamping portions of a neighboring disc, as is well known to the person skilled in the art.
  • Each gripping region may be considered to comprise a tweezer, while two abutting gripping regions form a tweezer pair.
  • Each tweezer is raidally beyond a channel 19 which helps to define the exact gripping area.
  • the gripping area is at a slight angle compared to the area behind the channel. The design of the channel prevents a sharp edge being present that could cause unwanted strain on the hair (and hence hair breakage).
  • the two diametrically opposed gripping regions 18 are for forming tweezers with an adjacent disc to one side of the disc and the two diametrically opposed gripping regions 20 are for forming tweezers with an adjacent disc to the opposite side of the disc.
  • the disc 12 comprises torque transmitting means 22 for transmitting a torque from/to a neighboring disc in the disc assembly 16.
  • the torque transmitting means are formed by projections 22 on one side and recesses on the opposite side, wherein the projections are configured such that they can engage in the recesses of a neighboring disc to receive/transmit the torque.
  • the known disc 12 is made by a 2K molding process, to enable the disc to be formed with the relatively hard and relatively soft portions as mentioned above. A more detailed discussion of an example of this type of disc may be found in US 8 608 756 .
  • Fig. 3 shows a sectional view of the known disc assembly 16.
  • This example shows nine discs 12 arranged between two end discs 10 and 14 .
  • the end disc 14 comprises side bearing means 36 which are intended to interact with bearing means of the epilating epilating device (not shown).
  • the end disc 10 comprises torque transmitting means 32 which are intended to receive a torque created by the drive of the epilating device.
  • Center bores of the discs 10, 12, 14 have a diameter which is slightly larger than a diameter of a shaft 50 on which the discs are arranged. This is necessary to enable the necessary pivot motion when the epilating apparatus is in operation.
  • Fig. 4 shows an example of the disc design in accordance with the invention. It may be applied to the epilator of the general type shown in Figs. 1 and 3 .
  • the disc has circumferential gripping regions 18 facing one side and circumferential gripping regions 20 facing the other side.
  • the disc is adjacent identical other discs (but with a 90 degree offset) two tweezers are formed at one side and two tweezers are formed at the other side.
  • the disc may however have more or fewer gripping regions, and the choice of four gripping regions (two facing each way) is simply an example.
  • the gripping regions present a narrowing channel over entrapped hairs and thereby pull them out.
  • This invention provides an improvement to the disc design, which increases the grip of the tweezers on the hairs needed for extraction form the skin.
  • a hard material should be used, and preferably also the surface roughness of the tweezers should be maintained as large as possible.
  • the disc of Fig. 4 is formed of metal parts and plastic parts.
  • the metal parts define one of the pairs of gripping regions, e.g. gripping regions 18, and the plastic parts define the other of the pairs of gripping regions, e.g. gripping regions 20.
  • the disc is formed by an overmolding process, such that plastic is overmolded over a metal base.
  • the interface between the metal part 60 and the plastic part 62 is for example represented by line 64 in Fig. 4 .
  • the metal base is thus an insert into the plastic mold.
  • the combination of metal and plastic gripping regions in each individual disc is a preferred design.
  • the plastic-metal tweezers may instead be formed by alternating fully plastic and fully metal discs.
  • the tweezer is again formed by a first portion of a first disc, which first portion is metal, and a second portion of an adjacent second disc, which second portion is plastic.
  • there need to be two different types of the central discs 12 whereas the combination of metal and plastic gripping regions in each individual disc enables a single design for the central discs 12.
  • the base and the overmolding each create half (in this example two) of the peripheral gripping regions, there is a suitable base for the overmolding as well as sufficient added volume of the plastic overmolding. This is only one option, and the metal part may instead be connected in a different (mechanical) way.
  • each tweezer is formed by the interface between a plastic gripping region and a metal gripping region.
  • the two surfaces that face each other to form a tweezer have different materials.
  • Fig. 5 shows the metal base part 60, which defines the first pair of gripping regions 18.
  • Fig. 6 shows the shape of the plastic overmolding 62. This does not exist as a separate component because it is formed over and around the metal base part 60. It is shown simply for clarity. It defines the second pair of gripping regions 20.
  • the metal base 60 is for example textured after the overmolding process, for example by laser etching. This texture gives an increased surface roughness, for example with greater roughness than the facing plastic part of the adjacent disc.
  • the metal gripping region may also be provided with a low friction rim (plastic and/or a coating) in order to protect the skin from getting into direct contact with the metal tweezer part.
  • the plastic part 62 for example comprises a plastic body filled with particles or fibers which are harder than the metal.
  • particles or fibers which are harder than the metal.
  • glass particles are used to roughen their metal counterpart over time to obtain optimized grip on the hairs and maintain proper surface roughness over the product's lifetime.
  • embedded particles such as glass fibers can be very abrasive to their metal counterpart, automatically roughening the metal surface over time.
  • the particles or fibers also give the plastic discs more stiffness and make them less prone to plastic deformation and relaxation over time (as is already known).
  • the particles or fibers may be glass beads or fibers, or carbon fibers or chalk particles. Instead of embedded particles of fibers, a coating may be applied to the plastic part.
  • the embedded particles are for example mixed with the plastic before the molding process.
  • the plastic may comprise PA66+60%GF, i.e. polyamide (nylon) with 60% glass fibers.
  • the invention may be applied to any epilator device which uses adjacent rotating discs to perform a tweezer function.

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  • Brushes (AREA)
EP22214433.9A 2022-12-19 2022-12-19 Plattenanordnung für einen epilierer Pending EP4388929A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22214433.9A EP4388929A1 (de) 2022-12-19 2022-12-19 Plattenanordnung für einen epilierer
PCT/EP2023/085019 WO2024132612A1 (en) 2022-12-19 2023-12-11 A disc arrangement for an epilator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22214433.9A EP4388929A1 (de) 2022-12-19 2022-12-19 Plattenanordnung für einen epilierer

Publications (1)

Publication Number Publication Date
EP4388929A1 true EP4388929A1 (de) 2024-06-26

Family

ID=84537939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22214433.9A Pending EP4388929A1 (de) 2022-12-19 2022-12-19 Plattenanordnung für einen epilierer

Country Status (2)

Country Link
EP (1) EP4388929A1 (de)
WO (1) WO2024132612A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0532106B1 (de) 1991-09-10 1995-06-07 Koninklijke Philips Electronics N.V. Scheibenepilliergerät mit Kraftübertragungsnocken
US8608756B2 (en) 2005-05-02 2013-12-17 Koninklijke Philips N.V. Disc for an epilating apparatus disc assembly
EP3552513B1 (de) * 2018-04-12 2020-12-16 Braun GmbH Kompakter pinzettenkopf zur haarentfernung
EP3915430A1 (de) * 2020-05-26 2021-12-01 Koninklijke Philips N.V. Verbesserung derhaarklemmleistung von einem paar haarklemmenelementen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0532106B1 (de) 1991-09-10 1995-06-07 Koninklijke Philips Electronics N.V. Scheibenepilliergerät mit Kraftübertragungsnocken
US8608756B2 (en) 2005-05-02 2013-12-17 Koninklijke Philips N.V. Disc for an epilating apparatus disc assembly
EP3552513B1 (de) * 2018-04-12 2020-12-16 Braun GmbH Kompakter pinzettenkopf zur haarentfernung
EP3915430A1 (de) * 2020-05-26 2021-12-01 Koninklijke Philips N.V. Verbesserung derhaarklemmleistung von einem paar haarklemmenelementen

Also Published As

Publication number Publication date
WO2024132612A1 (en) 2024-06-27

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