EP4552811A1 - Rasiereinheit für einen elektrischen rasierer mit von individuell entkoupbaren abdeckelementen umgebenen haarschneideeinheiten - Google Patents

Rasiereinheit für einen elektrischen rasierer mit von individuell entkoupbaren abdeckelementen umgebenen haarschneideeinheiten Download PDF

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Publication number
EP4552811A1
EP4552811A1 EP24150132.9A EP24150132A EP4552811A1 EP 4552811 A1 EP4552811 A1 EP 4552811A1 EP 24150132 A EP24150132 A EP 24150132A EP 4552811 A1 EP4552811 A1 EP 4552811A1
Authority
EP
European Patent Office
Prior art keywords
hair
cutting
unit
base member
shaving unit
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
EP24150132.9A
Other languages
English (en)
French (fr)
Inventor
Liangwei TAN
Wai Ho LI
Jun Zhang
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 PCT/EP2024/080971 priority Critical patent/WO2025103781A1/en
Publication of EP4552811A1 publication Critical patent/EP4552811A1/de
Pending legal-status Critical Current

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Classifications

    • 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
    • B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
    • 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3853—Housing or handle

Definitions

  • the invention relates to a shaving unit for an electric shaver, comprising a base member, at least two hair-cutting units supported by the base member and, for each respective one of the hair-cutting units, a retaining member associated with the respective hair-cutting unit and configured to retain the respective hair-cutting unit in an operational position relative to the base member, wherein the base member comprises, for each respective one of the hair-cutting units, a receiving member associated with the respective hair-cutting unit and configured to receive and accommodate the respective hair-cutting unit and its associated retaining member in said operational position.
  • the invention further relates to an electric shaver comprising a main body accommodating an electric motor; and a shaving unit as described here before coupled to the main body such that each hair-cutting unit of the shaving unit is drivable by the electric motor.
  • a shaving unit and an electric shaver as described in the section "field of the invention" are generally known.
  • the hair-cutting units of the known shaving unit may comprise an external cutting member with hair-entry openings and an internal cutting member with a plurality of hair-cutting elements covered by the external cutting member.
  • the external cutting member may be supported in a stationary or floating position relative to the base member.
  • the internal cutting member is movable relative to the external cutting member, so that hairs penetrating the hair-entry openings of the external cutting member may be cut by the moving hair-cutting elements of the internal cutting member.
  • the internal cutting member may be rotating or linearly reciprocating relative to the external cutting member.
  • a shaving unit as described in the section "field of the invention" with two hair-cutting units with rotating internal cutting members is disclosed by CN 214924649 U .
  • This known shaving unit has a head cover with two openings in its upper wall which are configured to receive and accommodate the two hair-cutting units.
  • the hair-cutting units are coupled to and supported by a holder comprising a separate retaining member for each hair-cutting unit.
  • the holder is releasably couplable to an interior space of the head cover by means of a locking assembly so that, in the coupled condition of the holder, the hair-cutting units are supported by the head cover via the holder and retained in an operational position relative to the head cover.
  • a shaving unit as described in the section "field of the invention" with three hair-cutting units with rotating internal cutting members is disclosed by EP 3 107 698 B1 in the name of the applicant.
  • This known shaving unit has a lower base member and an upper base member which is releasably coupled to the lower base member.
  • the three hair-cutting units are arranged in and supported by the upper base member.
  • the upper base member comprises, for each respective one of the three hair-cutting units, an annular skin-supporting member which is configured to receive and accommodate the respective hair-cutting unit.
  • Each respective hair-cutting unit is retained within the annular skin-supporting member associated with the respective hair-cutting unit by means of a retainer, which is releasably couplable to the associated skin-supporting member.
  • the retainer retains the respective hair-cutting unit in an operational position relative to the upper base member.
  • the annular skin-supporting members are each pivotally mounted to the upper base member so that, during use, the orientations of the hair-cutting units may be adjusted to the local contours of the user's skin to remain proper contact between the hair-cutting units and the user's skin.
  • a disadvantage of the known shaving units as described here before is that the general appearance of the shaving units is immutable. Some users, however, might desire to be able to change the general appearance of the shaving unit to increase the experience of using the shaving unit and the electric shaver comprising the shaving unit. A change of the general appearance might, e.g., involve a change of the color or outer-surface texture of particular parts of the shaving unit.
  • the user should be able to change the general appearance of the shaving unit without needing to disassemble the main parts of the shaving unit, in particular without needing to disassemble or remove the hair-cutting units.
  • a shaving unit having the features as mentioned in the section "field of the invention” here before is characterized in that the shaving unit comprises, for each respective one of the receiving members, a covering member which:
  • a covering member is provided for each of the receiving members of the base member which receive and accommodate the hair-cutting units.
  • the covering members are each individually couplable to and decouplable from the base member independently from any other of the covering members.
  • a user can decouple each covering member individually and separately from the base member while the hair-cutting units and the other covering member(s) remain in their operational positions within the shaving unit.
  • the covering members are each configured to surround and cover a respective one of the receiving members when the covering member is coupled to the base member, the covering members determine to a considerable degree the general appearance of the shaving unit.
  • the covering members each have said opening via which the respective hair-cutting unit protrudes relative to the covering member, i.e., in order to be able to contact the user's skin during use, the covering members may for the rest fully or substantially fully cover the receiving members in order to keep the receiving members out of the user's sight.
  • the replacement of the covering members does not require any further disassembly of the shaving unit and, accordingly, can be performed by the user in an easy and user-friendly manner.
  • the shaving unit comprises, for each respective one of the receiving members, at least two covering members that are each selectively couplable to the base member to surround and cover the respective receiving member, wherein the at least two covering members have mutually different colors, shapes and/or outer-surface textures.
  • the shaving unit may be provided with a set of such mutually different covering members from which the user, based on his or her personal wishes, may select those specific covering members to be coupled to the base member.
  • the user may, e.g., equip the shaving unit with two covering members having mutually different colors, which may provide a special user experience.
  • each receiving member is arranged on a common carrier of the base member, and each covering member, when coupled to the base member to surround and cover a respective one of the receiving members, extends from the common carrier towards the respective hair-cutting unit associated with the respective receiving member.
  • the covering members since the covering members each extend from the common carrier of the base member to the respective hair-cutting unit which is usually arranged in an uppermost position on the base member, the covering members may determine the general appearance of the shaving unit to a relatively large degree.
  • the common carrier may have a relatively small dimension in a main direction of extension of the covering members, so that the common carrier determines the general appearance of the shaving unit only to a relatively small degree.
  • the common carrier may, e.g., be plate-shaped with the receiving members extending in a direction substantially perpendicular to the plate-shaped carrier.
  • the common carrier may be releasably couplable to a main body of the electric shaver, so that the shaving unit, as a whole, is releasably couplable to the main body of the electric shaver.
  • the user may thus remove the shaving unit from the main body of the electric shaver and couple a different functional unit to the main body, e.g., a nose trimmer unit or a beard trimmer unit, as is generally known to the person skilled in the art.
  • each covering member is couplable to the base member by means of a snap-fit connection.
  • the snap-fit connections allow an easy and effortless decoupling and coupling of the covering members from and to the base member by the user.
  • each covering member may be couplable to the respective receiving member to surround and cover the respective receiving member.
  • snap-fit connections may be provided between the covering members and the receiving members.
  • each hair-cutting unit may be of a rotary type wherein the hair-cutting unit comprises an external cutting member having an annular shaving area with hair-entry openings, and an internal cutting member which is covered by the external cutting member and rotatable relative to the external cutting member about a central axis of the hair-cutting unit.
  • each covering member may have a mainly circularly cylindrical shape and, when coupled to the base member to surround and cover a respective one of the receiving members, may extend co-axially relative to the central axis of the hair-cutting unit associated with the respective receiving member.
  • Such a mainly circularly cylindrical covering member will in general perfectly surround and cover the respective one of the receiving members associated with the covering member.
  • the opening, via which the respective hair-cutting unit protrudes relative to the covering member, may be provided in an axial end portion of the circularly cylindrical covering member.
  • a shaving unit according to the invention may, e.g., have at least two hair-cutting units of a linearly reciprocating type, wherein the external cutting member generally comprises an elongated foil with hair-entry openings and the internal cutting member is configured and arranged to linearly reciprocate relative to the external cutting member in two mutually opposite directions parallel to a direction of extension of the foil.
  • the receiving members and the covering members surrounding and covering the receiving members may generally have rectangular shapes in conformity with the circumferential shape of the foils of the external cutting members.
  • each retaining member is releasably couplable to the base member. This allows the user to decouple the retaining members from the base member, so that the user may remove the hair-cutting units retained by the retaining members from the shaving unit, e.g., to clean the hair-cutting units or replace the hair-cutting units when worn out.
  • the shaving unit comprises a common retaining structure for the hair-cutting units which includes the retaining members associated with the hair-cutting units.
  • the common retaining structure may comprise a central coupling portion which is releasably couplable to the base member and, for each respective one of the retaining members, a connecting element associated with the respective retaining member and connecting the respective retaining member to the central coupling portion.
  • the connecting element of each respective retaining member may protrude from the central coupling portion into the receiving member associated with the respective retaining member when the central coupling portion is coupled to the base member.
  • a user may simply remove the hair-cutting units together from the shaving unit by decoupling the central coupling portion of the common retaining structure from the base member and removing the common retaining structure, with the hair-cutting units retained by the retaining members thereof, from the shaving unit.
  • the connecting elements of the common retaining structure allow the operational positions of the hair-cutting units to be at a distance from the central coupling portion. This facilitates the placement of the hair-cutting units in their operational positions by the user, in particular when the receiving members of the base member are difficult for the user's fingers to access.
  • the central coupling portion is releasably couplable to the base member by means of a snap-fit connection, which will allow an easy and effortless decoupling and coupling of the common retaining structure from and to the base member by the user.
  • each hair-cutting unit is releasably couplable to the respective retaining member associated with the hair-cutting unit.
  • This will enable the user to remove the retaining members, with the hair-cutting units retained thereon, from the shaving unit and subsequently to remove the hair-cutting units from the retaining members.
  • This may facilitate the removal of the hair-cutting units from the shaving unit, in particular when each hair-cutting unit has two or more parts, e.g., an external cutting member and an internal cutting member.
  • each hair-cutting unit is releasably couplable to the associated retaining member, and particularly when each hair-cutting unit is of a rotary type comprising an external cutting member having an annular shaving area with hair-entry openings and an internal cutting member which is covered by the external cutting member and rotatable relative to the external cutting member about a central axis of the hair-cutting unit, preferably each retaining member is configured to receive the respective hair-cutting unit associated with the retaining member into a coupled condition by a displacement of the respective hair-cutting unit relative to the retaining member in a direction perpendicular to the central axis of the respective hair-cutting unit.
  • each hair-cutting unit is couplable to and decouplable from the associated retaining member in a practical way.
  • the external cutting member of each hair-cutting unit may comprise a circumferential flange
  • each retaining member may comprise at least one guiding channel which, in the coupled condition of the respective hair-cutting unit associated with the retaining member, extends perpendicularly to the central axis of the respective hair-cutting unit to receive the flange of the external cutting member of the respective hair-cutting unit.
  • an electric shaver having the features as mentioned in the section "field of the invention" here before is characterized in that the shaving unit of the electric shaver is a shaving unit according to the invention as described here before.
  • the shaving unit is releasably coupled to the main body.
  • Figs. 1a-1c show an embodiment of an electric shaver 1 according to the invention.
  • the electric shaver 1 comprises a main body 3 which is configured to be held by a hand of a user.
  • the main body 3 accommodates an electric motor, a battery configured to power the electric motor, and electronic components configured to control the electric motor.
  • These parts of the electric shaver 1 accommodated by the main body 3 are well known to the skilled person and, therefore, are not shown in the figures and will not be described in further detail.
  • the electric shaver 1 comprises an embodiment of a shaving unit 5 according to the invention, which is coupled to the main body 3.
  • Fig. 2 the electric shaver 1 is shown in an exploded view, wherein the main parts of the shaving unit 5 are shown mutually separated.
  • the shaving unit 5 comprises two hair-cutting units 7a, 7b of a rotary type, which are well known to the skilled person and, therefore, will not be discussed in much detail.
  • Fig. 1 the electric shaver 1 is shown in an exploded view, wherein the main parts of the shaving unit 5 are shown mutually separated.
  • the shaving unit 5 comprises two hair-cutting units 7a, 7b of a rotary type, which are well known to the skilled person and, therefore, will not be discussed in much detail.
  • each hair-cutting unit 7a, 7b comprises an external cutting member 9a, 9b having an annular shaving area 11a, 1 1b with hair-entry openings (not shown), and an internal cutting member 13a, 13b which, in an assembled condition of the shaving unit 5 as shown in Figs. 1a-1c , is covered by the external cutting member 9a, 9b and rotatable relative to the external cutting member 9a, 9b about a central axis 15a, 15b of the hair-cutting unit 7a, 7b.
  • the main body 3 has two drive spindles 17a, 17b which are rotatable by the electric motor in the main body 3.
  • each of the two drive spindles 17a, 17b engages with a respective one of the internal cutting members 13a, 13b such that the internal cutting members 13a, 13b are jointly rotatable by the electric motor.
  • the shaving unit 5 comprises a base member 19 which is configured to support the hair-cutting units 7a, 7b in the assembled condition of the shaving unit 5.
  • the shaving unit 5 further comprises, for each respective one of the hair-cutting units 7a, 7b, a retaining member 21a, 21b which is associated with the respective hair-cutting unit 7a, 7b and configured to retain the respective hair-cutting unit 7a, 7b in an operational position relative to the base member 19.
  • the base member 19 comprises, for each respective one of the hair-cutting units 7a, 7b, a receiving member 23a, 23b which is associated with the respective hair-cutting unit 7a, 7b and configured to receive and accommodate the respective hair-cutting unit 7a, 7b and its associated retaining member 21a, 21b in said operational position in the assembled condition of the shaving unit 5.
  • each receiving member 23a, 23b has a partial circularly cylindrical wall 25 which surrounds a receiving space 27 for receiving and accommodating the respective hair-cutting unit 7a, 7b together with its associated retaining member 21a, 21b.
  • the shaving unit 5 comprises, for each respective one of the receiving members 23a, 23b of the base member 19, a covering member 29a, 29b.
  • the respective hair-cutting unit 7a, 7b associated with the respective receiving member 23a, 23b is retained in the operational position relative to the base member 19 by the retaining member 21a, 21b associated with the respective hair-cutting unit 7a, 7b as, e.g., shown in Fig.
  • each covering member 29a, 29b associated with the respective receiving member 23a, 23b is individually couplable to and decouplable from the base member 19 independently from the covering member 29a, 29b of the other receiving member 23a, 23b.
  • each covering member 29a, 29b is configured and arranged to surround and cover the respective receiving member 23a, 23b when the covering member 29a, 29b is coupled to the base member 19.
  • each covering member 29a, 29b has an opening 31 via which the respective hair-cutting unit 7a, 7b, in its operational position relative to the base member 19, protrudes relative to the covering member 29a, 29b when the covering member 29a, 29b is coupled to the base member 19, as shown in Figs. 1a-1c .
  • the covering members 29a, 29b are configured to surround and cover the receiving members 23a, 23b when the covering members 29a, 29b are coupled to the base member 19, the covering members 29a, 29b determine to a considerable degree the general appearance of the shaving unit 5, as shown in Figs. 1a-1c .
  • the covering members 29a, 29b may fully or substantially fully cover the receiving members 23a, 23b in order to keep the receiving members 23a, 23b out of the user's sight in the assembled condition of the shaving unit 5.
  • the covering members 29a, 29b each have a mainly circularly cylindrical shape, with the opening 31 being provided at an axial end portion of the covering member 29a, 29b.
  • each covering member 29a, 29b extends co-axially relative to the central axis 15a, 15b of the respective hair-cutting unit 7a, 7b associated with the respective receiving member 23a, 23b, as shown in Fig. 1a .
  • the covering members 29a, 29b will in general perfectly surround and cover the receiving members 23a, 23b.
  • the extent to which the covering members 29a, 29b determine the general appearance of the shaving unit 5 is further increased as a result of the facts that the base member 19 has a common carrier 33, as shown in Fig. 2 , onto which the receiving members 23a, 23b are arranged, and that the covering members 29a, 29b, when coupled to the base member 19 to surround and cover the receiving members 23a, 23b, each extend from the common carrier 33 towards the respective hair-cutting unit 7a, 7b, as shown in Figs. 1a-1c .
  • the common carrier 33 has a relatively small dimension in the axial direction of extension of the cylindrical covering members 29a, 29b when coupled to the base member 19, so that the common carrier 19 determines the general appearance of the shaving unit 5 only to a relatively small degree, as is visible in Figs. 1a-1c .
  • the common carrier 33 is substantially plate-shaped, and the receiving members 23a, 23b are integrally formed on the plate-shaped common carrier 33 and each extend in a direction substantially perpendicular to the plate-shaped common carrier 33.
  • a separate covering member 29a, 29b is provided which is individually couplable to and decouplable from the base member 19 of the shaving unit 5 independently from the covering member 29a, 29b of the other receiving member 23a, 23b, a user of the electric shaver 1 can decouple each covering member 29a, 29b individually and separately from the base member 19 while the hair-cutting units 7a, 7b, the other covering member 29a, 29b and other parts of the shaving unit 5 remain in their assembled positions relative to the base member 19 within the shaving unit 5.
  • the user may replace one of the covering members 29a, 29b or both covering members 29a, 29b by a covering member having a different appearance compared with the appearance of the replaced covering member 29a, 29b.
  • the shaving unit 5 is, for each respective one of the receiving members 23a, 23b, provided with at least two covering members 29a, 29a'; 29b, 29b' which are each selectively couplable to the base member 19 to surround and cover the respective receiving member 23a, 23b.
  • the at least two covering members 29a, 29a'; 29b, 29b' have mutually different colors, shapes, outer-surface textures and/or outer-surface decorations.
  • the shaving unit 5 may be provided with a plurality of such mutually different covering members from which the user, based on his or her personal wishes, may select those specific covering members to be coupled to the base member 19.
  • Figs. 1a-1c show the shaving unit 5 in three different configurations, wherein the shaving unit 5 is respectively provided with a first set of covering members 29a, 29b ( Fig. 1a ), a second set of covering members 29a', 29b' ( Fig. 1b ), and a third set of covering members 29a", 29b" ( Fig. 1c ) having mutually different outer-surface textures.
  • Figs. 1a-1c show the shaving unit 5 in three different configurations, wherein the shaving unit 5 is respectively provided with a first set of covering members 29a, 29b ( Fig. 1a ), a second set of covering members 29a', 29b' ( Fig. 1b ), and a third set of covering members 29a", 29b" ( Fig. 1c ) having mutually different outer-surface textures
  • the different sets of covering members 29a, 29b; 29a', 29b'; 29a", 29b" provide a special user experience as a result of the different appearances of the shaving unit 5.
  • a user can thus easily change the general appearance of the shaving unit 5 without the need to disassemble any other parts of the shaving unit 5, in particular the hair-cutting units 7a, 7b.
  • the invention also covers embodiments wherein the shaving unit is provided with three or more than three hair-cutting units of a rotary type.
  • an individually removable covering member as described in detail herein before is provided for the receiving member of each hair-cutting unit.
  • a skilled person will be readily able to realize a shaving unit with three or more hair-cutting units of a rotary-type and with three or more corresponding covering members based on the description of the embodiment of the shaving unit 5 with the two hair-cutting units 7a, 7b herein before.
  • each covering member 29a, 29b is couplable to the base member 19 by means of a snap-fit connection.
  • the snap-fit connections are provided between the covering members 29a, 29b and the receiving members 23a, 23b of the base member 19, so that each covering member 29a, 29b is couplable directly to the respective receiving member 23a, 23b to surround and cover the respective receiving member 23a, 23b.
  • the components of the snap-fit connections between the covering members 29a, 29b and the receiving members 23a, 23b are visible in Fig. 2 and in Fig. 3 , wherein Fig.
  • the snap-fit connections each comprise a pair of balls 35 and a pair of elastically deformable slots 37 configured to receive and hold the balls 35.
  • the slots 37 are provided in diametrically opposite positions on the cylindrical wall 25 of each receiving member 23a, 23b.
  • the balls 35 are provided in diametrically opposite positions on an inner wall of each covering member 29a, 29b. It is noted that in Fig. 3 only one ball 35 of the pair of balls 35 is visible on each covering member 29a, 29b.
  • Fig. 3 shows the covering member 29a in a condition coupled to the receiving member 23a, with the balls 35 of the covering member 29a in engagement with the corresponding slots 37 in the receiving member 23a.
  • Fig. 3 shows the covering member 29b in a condition individually decoupled from the receiving member 23b.
  • the covering members 29a, 29b may be releasably couplable to another part of the base member 19, e.g., the common carrier 33, and that instead of the snap-fit connections another type of connecting structure may be applied between the covering members 29a, 29b and the base member 19, such as a bayonet coupling or similar releasable coupling structures.
  • Fig. 4 shows the electric shaver 1 with the shaving unit 5 decoupled from the main body 3.
  • the user is able to remove the hair-cutting units 7a, 7b from the shaving unit 5, e.g., to clean the hair-cutting units 7a, 7b or to replace the hair-cutting units 7a, 7b when worn out.
  • each retaining member 21a, 21b is releasably couplable to the base member 19 of the shaving unit 5.
  • the shaving unit 5 shows the shaving unit 5 with the retaining members 21a, 21b, together with the hair-cutting units 7a, 7b retained thereby, in a condition decoupled from the base member 19.
  • the retaining members 21a, 21b are parts of and integrally formed on a common retaining structure 39 for the hair-cutting units 7a, 7b. This allows the user to simply remove the hair-cutting units 7a, 7b together from the shaving unit 5 by decoupling the common retaining structure 39, with the hair-cutting units 7a, 7b retained thereby, from the base member 19 and removing the common retaining structure 39 from the base member 19.
  • the retaining members 21a, 21b may be embodied as separate components of the shaving unit 5 configured to separately retain the hair-cutting units 7a, 7b in their operational positions relative to the base member 19 and the receiving members 23a, 23b.
  • the common retaining structure 39 of the shaving unit 5 comprises a central coupling portion 41 and, for each respective one of the retaining members 21a, 21b, a connecting element 43a, 43b associated with the respective retaining member 21a, 21b and connecting the respective retaining member 21a, 21b to the central coupling portion 41.
  • the central coupling portion 41 of the common retaining structure 39 is releasably couplable to the base member 19 of the shaving unit 5.
  • the central coupling portion 41 is releasably couplable to the common carrier 33 of the base member 19 by means of a snap-fit connection.
  • the components of the snap-fit connection between the central coupling portion 41 of the common retaining structure 39 and the common carrier 33 of the base member 19 are partially visible in the partial cross section of the shaving unit 5 shown in Fig. 4 , which shows the common retaining structure 39 with the hair-cutting units 7a, 7b retained thereby in a condition coupled to the base member 19 of the shaving unit 5.
  • the components of said snap-fit connection are shown in further detail in the enlarged view A of Fig.
  • said snap-fit connection comprises a boss 45 which is integrally formed on a bottom side of the common carrier 33 of the base member 19 in a central position between the receiving members 23a, 23b.
  • Said snap-fit connection further comprises two bosses 47a, 47b which are each integrally formed on the central coupling portion 41 of the common retaining structure 39 in positions facing each other.
  • Fig. 4 shows the boss 45 formed on the base member 19 snap-fitted with the bosses 47a, 47b formed on the common retaining structure 39, as a result of which the hair-cutting units 7a, 7b are retained in their operational positions relative to the base member 19 by the retaining members 21a, 21b of the common retaining structure 39.
  • the snap-fit connection between the base member 19 and the common retaining structure 39 will allow an easy and effortless decoupling and coupling of the common retaining structure 39, together with the hair-cutting units 7a, 7b retained thereby, from and to the base member 19 by the user.
  • alternative releasable coupling structures which will be well-known to the skilled person, may be used to releasably couple the common retaining structure 39 to the base member 19 of the shaving unit 5.
  • the connecting elements 43a, 43b of the common retaining structure 39 each protrude from the central coupling portion 41 into a respective one of the receiving members 23a, 23b of the base member 19.
  • the connecting elements 43a, 43b thus allow the operational positions of the hair-cutting units 7a, 7b to be at a distance from the central coupling portion 41. This facilitates the placement of the hair-cutting units 7a, 7b in their operational positions by the user, in particular when the receiving members 23a, 23b of the base member 19 are difficult to access for the user's fingers.
  • the connecting elements 43a, 43b allow the receiving members 23a, 23b and the covering members 29a, 29b covering and surrounding the receiving members 23a, 23b to extend and protrude over a relatively long distance from the common carrier 33 of the base member 19, without obstructing the user to easily place and remove the hair-cutting units 7a, 7b when necessary.
  • the covering members 29a, 29b may largely determine the appearance of the shaving unit 5.
  • Fig. 7 shows a cross section of the shaving unit 5 in its assembled condition and decoupled from the main body 3 of the electric shaver 1.
  • Fig. 7 shows the common carrier 33 of the base member 19, with the receiving members 23a, 23b integrally formed on and extending from the common carrier 33, and with the boss 45 integrally formed on the bottom side of the common carrier 33.
  • Fig. 7 shows the common carrier 33 of the base member 19, with the receiving members 23a, 23b integrally formed on and extending from the common carrier 33, and with the boss 45 integrally formed on the bottom side of the common carrier 33.
  • FIG. 7 further shows the central coupling portion 41, the retaining members 21a, 21b and the connecting elements 43a, 43b of the common retaining structure 39, with the hair-cutting units 7a, 7b retained in their operational positions relative to the base member 19 by means of the retaining members 21a, 21b, and with the two bosses 47a, 47b integrally formed on the central coupling portion 41 engaging the boss 45 formed on the common carrier 33.
  • Fig. 7 also shows the covering members 29a, 29b surrounding and covering the receiving members 23a, 23b, with the hair-cutting units 7a, 7b protruding relative to the covering members 29a, 29b via the openings 31 and with the balls 35 provided on the covering members 29a, 29b engaging the slots 37 provided in the receiving members 23a, 23b.
  • each hair-cutting unit 7a, 7b of the shaving unit 5 is releasably couplable to the respective retaining member 21a, 21b associated with the hair-cutting unit 7a, 7b in a manner to be described in detail herein after.
  • the user can easily remove the hair-cutting units 7a, 7b from the shaving unit 5 by first removing the common retaining structure 39, with the hair-cutting units 7a, 7b retained thereon by the retaining members 21a, 21b, from the shaving unit 5 and by subsequently removing the hair-cutting units 7a, 7b from the retaining members 21a, 21b.
  • the invention also covers embodiments wherein the hair-cutting units are not couplable to the retaining members.
  • the retaining members may each be releasably couplable to the base member in such way that, when the retaining members are coupled to the base member, the hair-cutting units are merely enclosed between the retaining members and parts of the base member to which the retaining members are coupled, without being coupled to the retaining members.
  • Fig. 5 shows the condition shown in Fig. 5 , wherein the shaving unit 5 is decoupled from the main body 3 of the electric shaver 1 and wherein the common retaining structure 39 is decoupled from the base member 19 of the shaving unit 5, the user can remove the hair-cutting units 7a, 7b from the common retaining structure 39 by decoupling the hair-cutting units 7a, 7b from the retaining members 21a, 21b.
  • Fig. 6 shows the common retaining structure 39 with one of the hair-cutting units 7a coupled to the associated retaining member 21a and with the other hair-cutting unit 7b decoupled from the associated retaining member 21b. As shown in Fig.
  • each retaining member 21a, 21b is configured to receive the respective hair-cutting unit 7a, 7b associated with the respective retaining member 21a, 21b into a coupled condition by a displacement of the respective hair-cutting unit 7a, 7b relative to the retaining member 21a, 21b in a direction perpendicular to the central axis 15a, 15b of the respective hair-cutting unit 7a, 7b, as indicated by the arrow D in Fig. 6 .
  • the retaining members 21a, 21b each comprise two guiding channels 49 which are arranged in diametrically opposite positions on the respective retaining member 21a, 21b, as shown in Fig. 6 .
  • the guiding channels 49 extend perpendicularly to the central axis 15a, 15b of the respective hair-cutting unit 7a, 7b.
  • the guiding channels 49 are configured and arranged to receive and hold a circumferential flange 51 which is provided on the external cutting member 9a, 9b of the respective hair-cutting unit 7a, 7b.
  • the circumferential flange 51 of the external cutting member 9a, 9b of each hair-cutting unit 7a, 7b is provided with two recesses 53 arranged in diametrically opposite positions relative to the central axis 15a, 15b. It is noted that in Fig. 6 only one of the two recesses 53 in the flange 51 of the external cutting member 9b of the hair-cutting unit 7b is visible.
  • the receiving members 21a, 21b each comprise an arresting element 55 which is configured and arranged to engage with one of the two recesses 53 in the flange 51 of the external cutting member 9a, 9b when the respective hair-cutting unit 7a, 7b is coupled to the respective receiving member 21a, 21b.
  • the retaining members 21a, 21b each comprise a pair of elastically deformable arms 57, each having an end portion on which an abutment element 59 is provided. It is noted that in Fig. 6 only the arms 57 and the abutment elements 59 of the retaining member 21b are visible. When the user places the respective hair-cutting unit 7a, 7b into the respective receiving member 21a, 21b, the abutment elements 59 will engage a lower side of the flange 51 of the external cutting member 9a, 9b of the respective hair-cutting unit 7a, 7b.
  • the arms 57 will be slightly deflected downwardly, so that the arms 57 will exert a biasing force on the flange 51 of the external cutting member 9a, 9b of the respective hair-cutting unit 7a, 7b via the abutment elements 59. Said biasing force assists to retain the hair-cutting units 7a, 7b in their operational positions within the receiving members 21a, 21b.
  • the shaving unit 5 is releasably couplable to the main body 3 of the electric shaver 1.
  • the common carrier 33 of the base member 19 of the shaving unit 5 is releasably couplable to the main body 3.
  • Figs. 8a-8b show a coupling mechanism provided on the main body 3 and configured to cooperate with the common carrier 33 of the base member 19 of the shaving unit 5 to enable the shaving unit 5 to be coupled to and decoupled from the main body 3 by the user.
  • the coupling mechanism comprises a sliding plate 61 which is provided with a push button 63 that can be operated by the user.
  • the sliding plate 61 is provided on an upper wall 65 of the main body 3 and is guided relative to the upper wall 65 by means of a guiding structure, not indicated in the figures, so as to be displaceable in two opposite directions indicated by arrows S, S' in Figs. 8a-8b .
  • the sliding plate 61 has two openings 67a, 67b through which the drive spindles 17a, 17b extend.
  • the drive spindles 17a, 17b are not shown in Figs. 8a-8b .
  • the coupling mechanism further has a spring, also not shown in the figures, arranged to bias the sliding plate 61 into a rest position as shown in Fig. 8a , wherein the push button 63 protrudes from the main body 3.
  • the sliding plate 61 is provided with four latching elements 69a, 69b, 69c, 69d, which are arranged on a circumferential edge of the sliding plate 61.
  • Figs. 8a-8b further show, in cross section, a circumferential flange 71 which is provided on the bottom side of the common carrier 33 of the base member 19.
  • the circumferential flange 71 is also indicated in Figs. 2 , 4 , 5 and 7 . In the rest position of the sliding plate 61 as shown in Fig.
  • the latching elements 69a-69d each engage a respective one of four latching recesses 73a, 73b, 73c, 73d which are provided on an inner side of the circumferential flange 71 of the common carrier 33, so that the shaving unit 5 is firmly coupled to the main body 3.
  • the latching recesses 73a and 73d are also visible in Fig. 7 .
  • the user needs to press the push button 63 against the biasing force applied to the sliding plate 61, so that the sliding plate 61 will be displaced in the direction S from the rest position shown in Fig. 8a into the unlatching position shown in Fig. 8b .
  • the latching elements 69a-69d will each be released from the corresponding latching recesses 73a-73d, as shown in Fig. 8b , so that the user can remove the shaving unit 5 from the main body 3.
  • the push button 63 is only shown in Figs. 8a and 8b , and not shown in the other figures. It will be clear for the skilled person that, e.g., in the view on the electric shaver 1 as shown in Figs. 1a-1c , the push button 63 may be arranged centrally on the main body 3 in a position immediately below the common carrier 33 of the base member 19 of the shaving unit 5.
  • the user By decoupling the shaving unit 5 from the main body 3, the user is enabled to remove the common retaining structure 39 carrying the hair-cutting units 7a, 7b from the shaving unit 5, as described in detail herein before.
  • the user may decouple the shaving unit 5 from the main body 3 in order to be able to couple a different functional unit to the main body 3, e.g., a nose trimmer unit 75.
  • Fig. 9 shows the main body 3 with the nose trimmer unit 75 coupled thereto. Because such a nose trimmer unit is generally known to the skilled person, the nose trimmer unit 75 will not be described in detail herein.
  • the main body 3 may have a separate drive shaft 77 to drive the nose trimmer unit 75 when coupled to the main body 3.
  • the separate drive shaft 77 is partially visible in Figs. 2 and 4 and is arranged in a more central position on the upper wall 65 of the main body 3 as compared with the drive spindles 17a, 17b.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP24150132.9A 2023-11-13 2024-01-03 Rasiereinheit für einen elektrischen rasierer mit von individuell entkoupbaren abdeckelementen umgebenen haarschneideeinheiten Pending EP4552811A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2024/080971 WO2025103781A1 (en) 2023-11-13 2024-11-04 Shaving unit for an electric shaver with hair-cutting units surrounded by individually decouplable covering members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2023131319 2023-11-13

Publications (1)

Publication Number Publication Date
EP4552811A1 true EP4552811A1 (de) 2025-05-14

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EP24150132.9A Pending EP4552811A1 (de) 2023-11-13 2024-01-03 Rasiereinheit für einen elektrischen rasierer mit von individuell entkoupbaren abdeckelementen umgebenen haarschneideeinheiten

Country Status (2)

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EP (1) EP4552811A1 (de)
CN (2) CN222079336U (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715803A (en) * 1971-02-16 1973-02-13 T Tyler Rotary dry shaver with tiltable shear plates
EP0318103A1 (de) * 1987-11-24 1989-05-31 Koninklijke Philips Electronics N.V. Elektrisches Rasiergerät
EP3107698A1 (de) 2014-05-07 2016-12-28 Koninklijke Philips N.V. Verbesserte rasiervorrichtung
US20170120465A1 (en) * 2015-11-02 2017-05-04 Izumi Products Company Rotary electric shaver
CN107756458A (zh) * 2017-10-24 2018-03-06 佛山市焕之醒科技有限公司 一种磁吸式电动剃须刀
CN214924649U (zh) 2021-05-25 2021-11-30 余姚市浦朗电器有限公司 一种方便拆装刀片的剃须刀头及其电动剃须刀

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715803A (en) * 1971-02-16 1973-02-13 T Tyler Rotary dry shaver with tiltable shear plates
EP0318103A1 (de) * 1987-11-24 1989-05-31 Koninklijke Philips Electronics N.V. Elektrisches Rasiergerät
EP3107698A1 (de) 2014-05-07 2016-12-28 Koninklijke Philips N.V. Verbesserte rasiervorrichtung
US20170120465A1 (en) * 2015-11-02 2017-05-04 Izumi Products Company Rotary electric shaver
CN107756458A (zh) * 2017-10-24 2018-03-06 佛山市焕之醒科技有限公司 一种磁吸式电动剃须刀
CN214924649U (zh) 2021-05-25 2021-11-30 余姚市浦朗电器有限公司 一种方便拆装刀片的剃须刀头及其电动剃须刀

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CN119974073A (zh) 2025-05-13
CN222079336U (zh) 2024-11-29

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