EP0318103A1 - Electric shaving apparatus - Google Patents

Electric shaving apparatus Download PDF

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Publication number
EP0318103A1
EP0318103A1 EP88202633A EP88202633A EP0318103A1 EP 0318103 A1 EP0318103 A1 EP 0318103A1 EP 88202633 A EP88202633 A EP 88202633A EP 88202633 A EP88202633 A EP 88202633A EP 0318103 A1 EP0318103 A1 EP 0318103A1
Authority
EP
European Patent Office
Prior art keywords
shaving
drive
housing
spindle portion
spindle
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.)
Granted
Application number
EP88202633A
Other languages
German (de)
French (fr)
Other versions
EP0318103B1 (en
Inventor
Hans Labrijn
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
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics 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 Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Priority to AT88202633T priority Critical patent/ATE74546T1/en
Publication of EP0318103A1 publication Critical patent/EP0318103A1/en
Application granted granted Critical
Publication of EP0318103B1 publication Critical patent/EP0318103B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3853—Housing or handle
    • 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
    • B26B19/14—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
    • B26B19/145—Cutters being movable in the cutting head
    • 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
    • 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
    • B26B19/3866—Seals or dampers

Definitions

  • the invention relates to a shaving apparatus comprising a housing which functions as a grip and a shaving head comprising at least one shaving unit, the shaving unit being in an inclined position relative to the housing, which shaving unit comprises a stationary shaving member with hair-­entry apertures and a rotatable shaving member, the rotatable shaving member being coupled to an electric motor by means of a drive spindle comprising two portions which are pivotable relative to one another, including a first drive-spindle portion coupled to the rotatable shaving member and a second drive-spindle portion coupled to the motor.
  • Such a shaving apparatus is known, for example, from United States Patent Specification 4,257,161 (PHN 8940). It is desirable that during use of the apparatus the shaving head or at least the shaving unit is in an inclined position relative to the part of the housing which serves as a grip, so that the shaving unit can be brought in contact with the skin to be shaved without strenuous wrist action.
  • PPN 8940 United States Patent Specification 4,257,161
  • the shaving head or at least the shaving unit is in an inclined position relative to the part of the housing which serves as a grip, so that the shaving unit can be brought in contact with the skin to be shaved without strenuous wrist action.
  • the motor must be arranged in the shaving head, so that the shaving head becomes bulky and the weight distribution of the shaver becomes unfavourable.
  • the housing is provided with a bearing by means of which the first drive-spindle portion is maintained in a position in which the direction of the axis of rotation of said portion deviates from the direction of the axis of rotation of the second portion.
  • the shaving apparatus shown in Figures 1 to 4 comprises a housing 1 which functions as a grip, and a shaving head 2, the shaving head being inclined relative to the housing, so that the housing and the shaving head adjoin one another as a vee.
  • the shaving head 2 comprises two shaving units 3, each comprising a stationary shaving member 4 with hair-entry apertures 5 and a rotatable shaving member 6.
  • the rotatable shaving members 6 are coupled to an electromotor 10 by means of drive spindles 9.
  • a drive spindle 9 of a construction known per se comprises a first drive-­spindle portion 11 coupled to the rotatable shaving member 6 and a second drive-spindle portion 12 coupled to the motor 10.
  • the second drive-spindle portion 12 is provided with a toothed ring 13 which is in mesh with the central toothed wheel 14 on the motor shaft 15.
  • a compression spring 16 arranged between the drive-shaft portions 11 and 12 provides the required pressure between the rotatable shaving members 6 and the stationary shaving member 4.
  • the first drive-spindle portion 11 has a flange 17 which engages in the space 18 in the second drive-spindle portion 12 to transmit the rotation of the drive-spindle portion 12 to the drive-spindle portion 11.
  • the drive-spindle portion 11 can telescope relative to the drive-spindle portion 12 against the action of the spring 16 and is also pivotable to a limited extent relative to the drive-spindle portion 12.
  • the housing 1 is provided with a bearing 19 for the first drive-spindle portion 11 to hold the first drive-­spindle portion permanently in a tilted position relative to the second drive-spindle portion 12.
  • This tilted position is such that the axis of rotation 20 of this drive spindle portion 11 ( Figure 4), which axis coincides substantially with the axis of rotation 7 of the rotatable shaving member 6, is oriented at the desired angle ⁇ relative to the axis of rotation 21 of the second drive spindle portion 12, which substantially coincides with the longitudinal axis 8 of the housing 1.
  • the bearing 19 is constructed as a part of an at least partly flexible sealing element 22.
  • This sealing element comprises an annular rubber cup 23, which surrounds the bearing 19, and a circumferential sealing lip 24. This lip engages a groove 25 in the inclined end wall 26 of the housing 1.
  • the sealing lip 24 is retained by means of an annular member 27 which forms part of a frame 28 which also carries the motor 10. To this end the frame 28 comprises hooks 29 which engage underneath the motor 10.
  • the frame comprises a frame plate 30 carrying the journals 31 for the second drive-spindle portions 12, so that these second drive-­spindle portions are also mounted on the frame. This greatly simplifies mounting of the motor 10 and the drive spindles 9, whilst at the same time the sealing element 22 is retained.
  • the sealing lip 24 mainly provides sealing relative to the upright walls 32 and 33 of the groove 25.
  • the above construction utilizes the possibilities offered by the existing pivotal drive spindles 9.
  • the motor 10 can be accommodated in the housing 1, so that the centre of gravity is situated in the housing and the apparatus is convenient to handle.
  • the shaving head 2 comprises only when the shaving units 3 and parts of the drive spindles 9, which provides more freedom with respect to the design of the shaving head.
  • the bearing 19 can be mounted directly in the housing wall 26 of the housing.
  • the sealing element 22 results in an apparatus which may be cleaned with water.
  • the sealing of the drive-spindle portions 11 can be further improved by providing the rubber cup 23 with a lip 34 adjoining the drive-spindle portion 11.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Processing Of Meat And Fish (AREA)

Abstract

The invention relates to a shaving apparatus comprising a housing (1) which can be used as a grip and a shaving head (2) comprising at least one shaving unit (3), the shaving unit (3) being inclined relative to the housing (1), which shaving unit (3) comprises a stationary shaving member (4) with hair-­entry apertures (5) and a rotatable shaving member (6), the rotatable shaving member (6) being coupled to an electric motor (10) by means of a drive spindle (9) comprising two portions (11,12) which are pivotable relative to one another, i.e. a first drive-spindle portion (11)coupled to the rotatable shaving member (6) and a second drive-­spindle portion (12) coupled to the motor (10). The housing (1) is provided with a bearing (19) by means of which the first drive-spindle portion (11) is held in an inclined position relative to the second drive-spindle portion (12).

Description

  • The invention relates to a shaving apparatus comprising a housing which functions as a grip and a shaving head comprising at least one shaving unit, the shaving unit being in an inclined position relative to the housing, which shaving unit comprises a stationary shaving member with hair-­entry apertures and a rotatable shaving member, the rotatable shaving member being coupled to an electric motor by means of a drive spindle comprising two portions which are pivotable relative to one another, including a first drive-spindle portion coupled to the rotatable shaving member and a second drive-spindle portion coupled to the motor.
  • Such a shaving apparatus is known, for example, from United States Patent Specification 4,257,161 (PHN 8940). It is desirable that during use of the apparatus the shaving head or at least the shaving unit is in an inclined position relative to the part of the housing which serves as a grip, so that the shaving unit can be brought in contact with the skin to be shaved without strenuous wrist action. In the known construction, where the axis of rotation of the motor and the axis of rotation of the rotary shaving member have the same direction, this means that the motor must be arranged in the shaving head, so that the shaving head becomes bulky and the weight distribution of the shaver becomes unfavourable.
  • It is the object of the invention to mitigate these drawbacks. To this end it is characterized in that the housing is provided with a bearing by means of which the first drive-spindle portion is maintained in a position in which the direction of the axis of rotation of said portion deviates from the direction of the axis of rotation of the second portion.
  • Special embodiments are defined in the appended subsidiary Claims.
  • Embodiments of the invention will now be described in more detail, by way of example, with reference to the Figures.
    • Figure 1 is a front view of a shaving apparatus in accordance with the invention.
    • Figure 2 is a side view of the shaving apparatus shown in Figure 1.
    • Figure 3 is a sectional view taken on the line III-­III in Figure 2.
    • Figure 4 is a sectional view taken on the line IV-IV in Figure 1.
    • Figure 5 shows a modification of the embodiment shown in Figures 1 to 4.
  • The shaving apparatus shown in Figures 1 to 4 comprises a housing 1 which functions as a grip, and a shaving head 2, the shaving head being inclined relative to the housing, so that the housing and the shaving head adjoin one another as a vee. The shaving head 2 comprises two shaving units 3, each comprising a stationary shaving member 4 with hair-entry apertures 5 and a rotatable shaving member 6.
  • The inclined position of a shaving unit 3 relative to the housing 1 can be defined by the angle α between the axis of rotation 7 of a rotatable shaving member 6 and the longitudinal axis 8 of the housing (Figure 2). Even a comparatively small value of α, for example α= 10°, provides a considerable improvement in shaving convenience.
  • The rotatable shaving members 6 are coupled to an electromotor 10 by means of drive spindles 9. A drive spindle 9 of a construction known per se comprises a first drive-­spindle portion 11 coupled to the rotatable shaving member 6 and a second drive-spindle portion 12 coupled to the motor 10. For this purpose the second drive-spindle portion 12 is provided with a toothed ring 13 which is in mesh with the central toothed wheel 14 on the motor shaft 15. A compression spring 16 arranged between the drive- shaft portions 11 and 12 provides the required pressure between the rotatable shaving members 6 and the stationary shaving member 4.
  • The first drive-spindle portion 11 has a flange 17 which engages in the space 18 in the second drive-spindle portion 12 to transmit the rotation of the drive-spindle portion 12 to the drive-spindle portion 11. The drive-spindle portion 11 can telescope relative to the drive-spindle portion 12 against the action of the spring 16 and is also pivotable to a limited extent relative to the drive-spindle portion 12.
  • The housing 1 is provided with a bearing 19 for the first drive-spindle portion 11 to hold the first drive-­spindle portion permanently in a tilted position relative to the second drive-spindle portion 12. This tilted position is such that the axis of rotation 20 of this drive spindle portion 11 (Figure 4), which axis coincides substantially with the axis of rotation 7 of the rotatable shaving member 6, is oriented at the desired angle α relative to the axis of rotation 21 of the second drive spindle portion 12, which substantially coincides with the longitudinal axis 8 of the housing 1.
  • Preferably, the bearing 19 is constructed as a part of an at least partly flexible sealing element 22. This sealing element comprises an annular rubber cup 23, which surrounds the bearing 19, and a circumferential sealing lip 24. This lip engages a groove 25 in the inclined end wall 26 of the housing 1.
  • The sealing lip 24 is retained by means of an annular member 27 which forms part of a frame 28 which also carries the motor 10. To this end the frame 28 comprises hooks 29 which engage underneath the motor 10. The frame comprises a frame plate 30 carrying the journals 31 for the second drive-spindle portions 12, so that these second drive-­spindle portions are also mounted on the frame. This greatly simplifies mounting of the motor 10 and the drive spindles 9, whilst at the same time the sealing element 22 is retained. The sealing lip 24 mainly provides sealing relative to the upright walls 32 and 33 of the groove 25.
  • For driving the shaving units 3, which are included relative to the housing, the above construction utilizes the possibilities offered by the existing pivotal drive spindles 9. As a result of this special additional parts such as flexible shafts or bevel-gear transmissions are not needed. The motor 10 can be accommodated in the housing 1, so that the centre of gravity is situated in the housing and the apparatus is convenient to handle. The shaving head 2 comprises only when the shaving units 3 and parts of the drive spindles 9, which provides more freedom with respect to the design of the shaving head.
  • Alternatively, the bearing 19 can be mounted directly in the housing wall 26 of the housing. However, the use of the sealing element 22 results in an apparatus which may be cleaned with water. The sealing of the drive-spindle portions 11 can be further improved by providing the rubber cup 23 with a lip 34 adjoining the drive-spindle portion 11.
  • It is obvious that the invention may also be applied to a dry-shaving apparatus as shown in Figure 5 without a shaving head which adjoins the housing in accordance with a vee, but in which the shaving unit 3 is merely inclined relative to said housing 1.

Claims (3)

1. A shaving apparatus comprising a housing which functions as a grip and a shaving head comprising at least one shaving unit, the shaving unit being in an inclined position relative to the housing, which shaving unit comprises a stationary shaving member with hair-entry apertures and a rotatable shaving member, the rotatable shaving member being coupled to an electric motor by means of a drive spindle comprising two portions which are pivotable relative to one another, including a first drive-spindle portion coupled to the rotatable shaving member and a second drive-spindle portion coupled to the motor, characterized in that the housing is provided with a bearing by means of which the first drive-spindle portion is maintained in a position in which the direction of the axis of rotation of said portion deviates from the direction of the axis of rotation of the second portion.
2. A shaving apparatus as claimed in Claim 1, characterized in that the bearing forms part of an at least partly flexible sealing element arranged between the housing and the shaving head.
3. A shaving apparatus as claimed in Claim 2, characterized in that both the motor and the second drive-­spindle portion are carried by a frame which can be mounted in the housing and which also retains the sealing element.
EP88202633A 1987-11-24 1988-11-23 Electric shaving apparatus Expired - Lifetime EP0318103B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88202633T ATE74546T1 (en) 1987-11-24 1988-11-23 ELECTRIC SHAVER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8702812 1987-11-24
NL8702812A NL8702812A (en) 1987-11-24 1987-11-24 ELECTRIC RAZOR.

Publications (2)

Publication Number Publication Date
EP0318103A1 true EP0318103A1 (en) 1989-05-31
EP0318103B1 EP0318103B1 (en) 1992-04-08

Family

ID=19850967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202633A Expired - Lifetime EP0318103B1 (en) 1987-11-24 1988-11-23 Electric shaving apparatus

Country Status (8)

Country Link
EP (1) EP0318103B1 (en)
JP (1) JPH01166791A (en)
AT (1) ATE74546T1 (en)
CA (1) CA1322651C (en)
DE (1) DE3869922D1 (en)
ES (1) ES2032003T3 (en)
HK (1) HK120993A (en)
NL (1) NL8702812A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580251A1 (en) * 1992-07-24 1994-01-26 Koninklijke Philips Electronics N.V. Shaver with a seal against hair dust
WO2006067710A1 (en) * 2004-12-22 2006-06-29 Koninklijke Philips Electronics N.V. Rotary shavers, with improved drive and support structure for the shaving heads
EP4215320A1 (en) * 2022-01-21 2023-07-26 Koninklijke Philips N.V. Sealing an opening through which a drive shaft extends in a shaving unit for a rotary electric shaver

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4341887B2 (en) * 2003-01-23 2009-10-14 九州日立マクセル株式会社 Electric razor
ES2324249B1 (en) * 2006-07-06 2010-05-13 Universidad De Alcala ELECTRIC SHAKER WITH EMISSION OF ULTRASOUNDS.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1410740A (en) * 1963-10-07 1965-09-10 Philips Nv Device for dismantling the wall of a device housing
NL6509285A (en) * 1965-07-17 1967-01-18
EP0162277A1 (en) * 1984-04-21 1985-11-27 Braun Aktiengesellschaft Seal for a dry-shaving apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1410740A (en) * 1963-10-07 1965-09-10 Philips Nv Device for dismantling the wall of a device housing
NL6509285A (en) * 1965-07-17 1967-01-18
EP0162277A1 (en) * 1984-04-21 1985-11-27 Braun Aktiengesellschaft Seal for a dry-shaving apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580251A1 (en) * 1992-07-24 1994-01-26 Koninklijke Philips Electronics N.V. Shaver with a seal against hair dust
WO2006067710A1 (en) * 2004-12-22 2006-06-29 Koninklijke Philips Electronics N.V. Rotary shavers, with improved drive and support structure for the shaving heads
CN101084092B (en) * 2004-12-22 2010-08-11 皇家飞利浦电子股份有限公司 Rotary shavers, with improved drive and support structure for the shaving heads
US8844141B2 (en) 2004-12-22 2014-09-30 Koninklijke Philips N.V. Rotary shavers, with improved drive and support structure for the shaving heads
US9616583B2 (en) 2004-12-22 2017-04-11 Koninklijke Philips N.V. Rotary shavers, with improved drive and support structure for the shaving heads
US10118303B2 (en) 2004-12-22 2018-11-06 Koninklijke Philips N.V. Rotary shavers, with improved drive and support structure for the shaving heads
EP4215320A1 (en) * 2022-01-21 2023-07-26 Koninklijke Philips N.V. Sealing an opening through which a drive shaft extends in a shaving unit for a rotary electric shaver
WO2023138856A1 (en) * 2022-01-21 2023-07-27 Koninklijke Philips N.V. Sealing an opening through which a drive shaft extends in a shaving unit for a rotary electric shaver

Also Published As

Publication number Publication date
CA1322651C (en) 1993-10-05
DE3869922D1 (en) 1992-05-14
EP0318103B1 (en) 1992-04-08
ES2032003T3 (en) 1993-01-01
JPH01166791A (en) 1989-06-30
NL8702812A (en) 1989-06-16
HK120993A (en) 1993-11-12
ATE74546T1 (en) 1992-04-15

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