US3176106A - Voltage change-over switch for electrical apparatus - Google Patents

Voltage change-over switch for electrical apparatus Download PDF

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Publication number
US3176106A
US3176106A US201969A US20196962A US3176106A US 3176106 A US3176106 A US 3176106A US 201969 A US201969 A US 201969A US 20196962 A US20196962 A US 20196962A US 3176106 A US3176106 A US 3176106A
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United States
Prior art keywords
buttons
contact member
voltage
supporting plate
over switch
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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.)
Expired - Lifetime
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US201969A
Inventor
Driest Jan Van Den
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US Philips Corp
North American Philips Co Inc
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US Philips Corp
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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
    • B26B19/3873—Electric features; Charging; Computing devices
    • 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
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/286—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive providing for two or more different electrical power sources
    • 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
    • B26B19/3886—Actuating members, e.g. switches or control knobs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/635—Contacts actuated by rectilinearly-movable member linked to operating part, e.g. by pin and slot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/54—Lever switches with blade-type contact co-operating with one or two spring-clip contacts, e.g. knife switch
    • H01H21/58—Change-over switches without stable intermediate position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"

Definitions

  • FIG.3 15 VOLTAGE CHANGE-OVER S WITQH FORELECTRICAL APPARATUS Filed June 12, 1962 FIG.3 15
  • FIG 5 AGENT United States Patent 3,176,106 VOLTAGE CHANGE-OVER SWITCH FOR ELECTRICAL APPARATUS Jan van den Driest, Drachten, Netherlands, assignor to North American Philips Company, Inc., New York,
  • the invention relates to a voltage change-over switch for electrical apparatus, in particular shaving apparatus.
  • the invention has for its object to provide a simple change-over switch which permits of readily changing over from, for example, 220 v. to 110 v. mains voltage and conversely and which gives a clear indication of the voltage switched in.
  • this object is achieved in that use is made of two buttons movable in opposite directions, which buttons can be shifted along a surface on which two voltage markings are provided so that always one of them is covered by one of the buttons.
  • push-button switches having two push-buttons one of which serves to switch in and the other to switch out the voltage, are known. This construction is not suitable for a voltage change-over switch because push-buttons may be readily operated unintentionally as a result of an accidental contact with an object, for example when putting down a shaving apparatus on a table while difiiculties are also involved in covering one of two voltage markings with push-buttons.
  • FIG. 1 is a plan view of a shaving apparatus incorporating the invention.
  • FIGS. 2 to are a plan View, a bottom view and a cross-sectional view, respectively, of a component part of the apparatus.
  • the shaving apparatus shown in FIGS. 1 and 2 is accommodated in a housing of a synthetic material consisting of two parts 1 and 3 secured to each other, the latter of which serves as a covering hood.
  • the hood 3 projects beyond the part 1 of the housing and in this projecting part a change-over switch is provided which is shown separately in FIGS. 3, 4 and 5.
  • This switch comprises an insulating supporting plate 5 on which are provided two elongated and preferably parallel arranged sliding buttons 7 and 9 adapted to be moved in the longitudinal directions in opposite directions.
  • two voltage markings for example, 110 and 220" are arranged in the paths of movement of the buttons 7 and 9 so that always one of these voltage indications is covered by one of the buttons (see FIGS. 1 and 3).
  • each button (for the sake of clarity, only the button 7 shown completely in FIG. 5 is described hereinafter) is constituted by one leg of a U-shaped member which embraces the plate 5 on both sides and the connecting piece or center part 15 of which has a rectangular cross-section fitting in the associated edge slot 11 and is guided by this slot, while the other leg 16 actuates the moving contact member of the device in a manner described hereinafter.
  • This member consists of a butterfly-shaped piece of insulating material 19 which is adapted to rotate about a central shaft 17 and on the lower side of which (see FIG. 4) two diametrically opposed stripshaped change-over contacts 21 are provided the ends of which are bent around the circular-cylindrical edge of the insulating member 19 (shown in elevation in FIG. 5). These bent ends co-operate with four resilient fixed con- .tacts 23 disposed about the contact member 19 which with the aid of loop-shaped portions 25 are secured to pins 27 formed on the lower side of the supporting plate 5.
  • the ends of the contacts 21 located on the lower side of the contact member 19 are widened and cooperate with two contacts 29 (see also FIG. 5) which are secured to two contact pins 31 with which they are in electrical connection and which serve to connect the apparatus to a suitable counterplug (not shown).
  • a conventional locking device 33 under spring pressure the contact member 19 can be locked in two switch positions.
  • the contacts 23 are so connected to the apparatus in the housing 1, 3 that in one position -of the contact member 19 this apparatus is adjusted to one of the mains voltage and in the other position to the other of the mains voltage.
  • the contacts 23 are omitted for the sake of clarity.
  • the supporting plate 5 with the buttons 7 and 9 is arranged in the housing 1, 3 of the apparatus so that the button depressed-button 9 in FIG. 1disappears in the housing entirely or at least in part, the other button 7 only slightly projecting from the housing-in this case from the part 1.
  • the buttons are disposed in a recessed corner constituted by the parts 1 and 3 of the housing which are at an angle of less than and consequently the buttons are protected to a certain extent from unintentional operation due to the apparatus being carelessly put down or striking another object.
  • buttons may be used to avoid unintentional changing over completely by disposing the buttons so that they both remain within the housing, the non-operated button being flush with the housing.
  • a changeover is effected with the aid of an accessory, for example the lower end of the brush for cleaning the apparatus.
  • a voltage change-over switch for an electric shaver comprising an insulated supporting plate provided with guide grooves therein, two buttons slideable in said guide grooves, voltage indicia on said supporting plate in the path of travel of said buttons, a contact member, and means pivotally securing said contact member to said supporting plate, said buttons being operatively connected to said pivotal contact member whereby said buttons are simultaneously slidable in opposite directions so that one of said voltage indicia is always covered by one of the buttons when another voltage connection has been made to said contact member.
  • buttons are elongated and are located substantially parallel.
  • a Voltage change-over switch for an electric shaver comprising an insulated supporting plate provided with guide grooves therein, two buttons slide'able ih said guide grooves, voltage indicia on said supporting plate in the path of travel of said buttons, a contact member, and means pivotally securing said contact member to said supporting plate, said buttons being operatively connected to said pivotal contact member whereby said buttons are simultaneously slideable in opposite directions so that located in the area at the junction of said two parts.

Description

March 30, 1965 J. VAN DEN DRIEST 3,176,106
VOLTAGE CHANGE-OVER S WITQH FORELECTRICAL APPARATUS Filed June 12, 1962 FIG.3 15
INVENTOR.
0 JAN MN DEN' DRIEST FIG 5 AGENT United States Patent 3,176,106 VOLTAGE CHANGE-OVER SWITCH FOR ELECTRICAL APPARATUS Jan van den Driest, Drachten, Netherlands, assignor to North American Philips Company, Inc., New York,
N.Y., a corporation'of Delaware Filed June 12, 1962, Ser. No. 201,969 Claims priority, application ge7therlands, July 13, 1961,
4 Claims. (Cl. 200-157) The invention relates to a voltage change-over switch for electrical apparatus, in particular shaving apparatus. The invention has for its object to provide a simple change-over switch which permits of readily changing over from, for example, 220 v. to 110 v. mains voltage and conversely and which gives a clear indication of the voltage switched in.
According to the invention, this object is achieved in that use is made of two buttons movable in opposite directions, which buttons can be shifted along a surface on which two voltage markings are provided so that always one of them is covered by one of the buttons.
It should be noted that push-button switches having two push-buttons one of which serves to switch in and the other to switch out the voltage, are known. This construction is not suitable for a voltage change-over switch because push-buttons may be readily operated unintentionally as a result of an accidental contact with an object, for example when putting down a shaving apparatus on a table while difiiculties are also involved in covering one of two voltage markings with push-buttons.
The invention will now be described more fully with reference to the accompanying drawings, in which:
FIG. 1 is a plan view of a shaving apparatus incorporating the invention, and
FIGS. 2 to are a plan View, a bottom view and a cross-sectional view, respectively, of a component part of the apparatus.
The shaving apparatus shown in FIGS. 1 and 2 is accommodated in a housing of a synthetic material consisting of two parts 1 and 3 secured to each other, the latter of which serves as a covering hood. The hood 3 projects beyond the part 1 of the housing and in this projecting part a change-over switch is provided which is shown separately in FIGS. 3, 4 and 5. This switch comprises an insulating supporting plate 5 on which are provided two elongated and preferably parallel arranged sliding buttons 7 and 9 adapted to be moved in the longitudinal directions in opposite directions. On the upper side, that is to say the visible side of the plate 5, two voltage markings, for example, 110 and 220" are arranged in the paths of movement of the buttons 7 and 9 so that always one of these voltage indications is covered by one of the buttons (see FIGS. 1 and 3).
In the supporting plate 5 provision is made of two edge slots 11 and 13 extending parallel to each other in the direction of movement of the buttonsthat is to say, slots starting from one of the edges of the platewhich serve as guides for the buttons 7 and 9. Each button (for the sake of clarity, only the button 7 shown completely in FIG. 5 is described hereinafter) is constituted by one leg of a U-shaped member which embraces the plate 5 on both sides and the connecting piece or center part 15 of which has a rectangular cross-section fitting in the associated edge slot 11 and is guided by this slot, while the other leg 16 actuates the moving contact member of the device in a manner described hereinafter. This member consists of a butterfly-shaped piece of insulating material 19 which is adapted to rotate about a central shaft 17 and on the lower side of which (see FIG. 4) two diametrically opposed stripshaped change-over contacts 21 are provided the ends of which are bent around the circular-cylindrical edge of the insulating member 19 (shown in elevation in FIG. 5). These bent ends co-operate with four resilient fixed con- .tacts 23 disposed about the contact member 19 which with the aid of loop-shaped portions 25 are secured to pins 27 formed on the lower side of the supporting plate 5. The ends of the contacts 21 located on the lower side of the contact member 19 are widened and cooperate with two contacts 29 (see also FIG. 5) which are secured to two contact pins 31 with which they are in electrical connection and which serve to connect the apparatus to a suitable counterplug (not shown). By means of a conventional locking device 33 under spring pressure the contact member 19 can be locked in two switch positions.
In the leg of each of the U-shaped members located on the lower side of the supporting plate 5, for example in the leg 16 of the member 7, 15, 16, provision is made of a recess 35 in which lies one of two embossed parts or projections 37 provided opposite to each other on the upper side of the contact member 19. Through these recesses and projections the two U-shaped members of which the buttons 7 and 9 form part, are connected with the contact member 19 so that when one of the buttons 7 and 9 is displaced in one of the two directions, the contact member is actuated, the other button being moved in the opposite direction by the contact member. Consequently always only one of the two voltage indicia is covered by one of the buttons 7 and 9 the voltage indicated being obviously that to which the apparatus is set by the switch.
In a usual manner which need not be described further, the contacts 23 are so connected to the apparatus in the housing 1, 3 that in one position -of the contact member 19 this apparatus is adjusted to one of the mains voltage and in the other position to the other of the mains voltage. In FIG. 5, the contacts 23 are omitted for the sake of clarity.
In FIG. 1, preferably, the supporting plate 5 with the buttons 7 and 9 is arranged in the housing 1, 3 of the apparatus so that the button depressed-button 9 in FIG. 1disappears in the housing entirely or at least in part, the other button 7 only slightly projecting from the housing-in this case from the part 1. As shown in FIG. 2, the buttons are disposed in a recessed corner constituted by the parts 1 and 3 of the housing which are at an angle of less than and consequently the buttons are protected to a certain extent from unintentional operation due to the apparatus being carelessly put down or striking another object.
If desired, unintentional changing over may be avoided completely by disposing the buttons so that they both remain within the housing, the non-operated button being flush with the housing. In this embodiment, a changeover is effected with the aid of an accessory, for example the lower end of the brush for cleaning the apparatus.
\Vhat is claimed is:
1. A voltage change-over switch for an electric shaver comprising an insulated supporting plate provided with guide grooves therein, two buttons slideable in said guide grooves, voltage indicia on said supporting plate in the path of travel of said buttons, a contact member, and means pivotally securing said contact member to said supporting plate, said buttons being operatively connected to said pivotal contact member whereby said buttons are simultaneously slidable in opposite directions so that one of said voltage indicia is always covered by one of the buttons when another voltage connection has been made to said contact member.
2. A voltage change-over switch for an electric shaver 3 a as 'claimed'in claim 1 wherein said buttons are elongated and are located substantially parallel.
3*. A voltage change-over switch for an electric shaver as claimed in claim' 1 'wherein said guide grooves are edge slots and each of said buttons are U-shape'd in conf gurations with one leg of each of said buttons being the finger piece and the other leg being the means by which said contact member is actuated upon the movement of said butto'ns'in predetermined directions.
'4'. A Voltage change-over switch for an electric shaver comprising an insulated supporting plate provided with guide grooves therein, two buttons slide'able ih said guide grooves, voltage indicia on said supporting plate in the path of travel of said buttons, a contact member, and means pivotally securing said contact member to said supporting plate, said buttons being operatively connected to said pivotal contact member whereby said buttons are simultaneously slideable in opposite directions so that located in the area at the junction of said two parts.
References Cited by theExaminer g UNITED STATES PATENTS 828,739 8/06 Hart 200 172 2,228,665 1/41 Knopp 2o0 172 2,256,181, 9/41 Tyrner -t 339-32 BERNARD A. GILHEANY, Primary Examiner.
ROBERT K. SCHAEF-ER, Examiner.

Claims (1)

1. A VOLTAGE CHANGE-OVER SWITCH FOR AN ELECTRIC SHAVER COMPRISING AN INSULATED SUPPORTING PLATE PROVIDED WITH GUIDE GROOVES THEREIN, TWO BUTTONS SLIDEABLE IN SAID GUIDE GROOVES, VOLTAGE INDICIA ON SAID SUPPORTING PLATE IN THE PATH OF TRAVEL OF SAID BUTTONS, A CONTACT MEMBER, AND MEANS PIVOTALLY SECURING SAID CONTACT MEMBER TO SAID SUPPORTING PLATE, SAID BUTTONS BEING OPERATIVELY CONNECTED TO SAID PIVOTAL CONTACT MEMBER WHEREBY SAID BUTTONS ARE SIMULTANEOUSLY SLIDABLE IN OPPOSITE DIRECTIONS SO THAT ONE OF SAID VOLTAGE INDICIA IS ALWAYS COVERED BY ONE OF THE BUTTONS WHEN ANOTHER VOLTAGE CONNECTION HAS BEEN MADE TO SAID CONTACT MEMBER.
US201969A 1961-07-13 1962-06-12 Voltage change-over switch for electrical apparatus Expired - Lifetime US3176106A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL267067 1961-07-13

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US3176106A true US3176106A (en) 1965-03-30

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JP (1) JPS4417542Y1 (en)
DE (1) DE1161622B (en)
ES (1) ES279124A1 (en)
FR (1) FR1328775A (en)
GB (1) GB969397A (en)
NL (1) NL267067A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112271A (en) * 1976-12-20 1978-09-05 Sperry Rand Corporation Counter device associated with switch actuator of electrical shaver to determine battery recharging and use
US4384180A (en) * 1980-07-17 1983-05-17 U.S. Philips Corporation Electric shaver having plural switch assembly and illuminated counter mechanism
US20100275446A1 (en) * 2009-04-29 2010-11-04 Rovcal, Inc. Rotary electric shaver
US20130104401A1 (en) * 2011-11-02 2013-05-02 Milly Rodriguez Anatomically configured razor device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US828739A (en) * 1905-11-10 1906-08-14 Hart Mfg Co Electric switch.
US2228665A (en) * 1940-07-15 1941-01-14 Knapp Monarch Co Two voltage shaver
US2256181A (en) * 1940-03-20 1941-09-16 Air Reduction Change-over switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US828739A (en) * 1905-11-10 1906-08-14 Hart Mfg Co Electric switch.
US2256181A (en) * 1940-03-20 1941-09-16 Air Reduction Change-over switch
US2228665A (en) * 1940-07-15 1941-01-14 Knapp Monarch Co Two voltage shaver

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112271A (en) * 1976-12-20 1978-09-05 Sperry Rand Corporation Counter device associated with switch actuator of electrical shaver to determine battery recharging and use
US4384180A (en) * 1980-07-17 1983-05-17 U.S. Philips Corporation Electric shaver having plural switch assembly and illuminated counter mechanism
US20100275446A1 (en) * 2009-04-29 2010-11-04 Rovcal, Inc. Rotary electric shaver
US20130104401A1 (en) * 2011-11-02 2013-05-02 Milly Rodriguez Anatomically configured razor device

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Publication number Publication date
NL267067A (en) 1964-08-10
FR1328775A (en) 1963-05-31
GB969397A (en) 1964-09-09
JPS4417542Y1 (en) 1969-07-30
ES279124A1 (en) 1962-10-01
DE1161622B (en) 1964-01-23

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