US3259728A - Electrical switch with contact elements serving as external terminals and as assembly fasteners - Google Patents

Electrical switch with contact elements serving as external terminals and as assembly fasteners Download PDF

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US3259728A
US3259728A US286307A US28630763A US3259728A US 3259728 A US3259728 A US 3259728A US 286307 A US286307 A US 286307A US 28630763 A US28630763 A US 28630763A US 3259728 A US3259728 A US 3259728A
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Prior art keywords
contacts
casing
fixed contacts
contact elements
selector element
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US286307A
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De Christian-Marie-Gode Temple
Stapfer Max
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DU TEMPLE DE ROUGEMONT
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DU TEMPLE DE ROUGEMONT
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
    • G05G7/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance
    • G05G7/08—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance in which repeated movement of the controlling member moves the controlling member through a cycle of distinct positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/08—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
    • B43K24/086—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons with heart-shaped cams, balls
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/44—Contacts characterised by the manner in which co-operating contacts engage by sliding with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force
    • H01H13/562—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force making use of a heart shaped cam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/72—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position
    • H01H13/74—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position each contact set returning to its original state only upon actuation of another of the operating members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/26—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection operated by hand
    • H03J5/32—Stationary tuning circuits or elements selected by push-button
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20468—Sliding rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • the present invention enables the construction of switching arrangements satisfying these different conditions.
  • Button-controlled switching arrangements in general, consist of an insulating casing carrying 'the fixed contacts, with which the moving contacts co-act, and they may also incorporate terminals or current taps for the different external circuits which are connected to the fixed contacts.
  • this casing serves as a guide for a sliding selector element, also formed of insulating material, and which carries the moving contacts.
  • the insulating casings carrying the fixed contacts are made in at least two parts, one of which is trough-shaped and guides the selector element in the manner of a slide on three sides, while the other part serves as a cover and a guide on the fourth side. It is to be understood, that these two parts must be firmly secured to each other by suitable separate connecting means, or by. connecting means incorporated in such parts.
  • the assembly of the two casing parts is effected by means of contacts which are themselves fixed, and not by separate joining means.
  • the present invention is, therefore, an electric switching arrangement comprising an insulating casing having a plurality of parts carrying fixed contacts and which houses a sliding selector element carrying movable contacts for coacting with the fixed contacts, the latter being formed of straight lengths of wire of circular cross-section inserted in holes made in opposed pairs in opposed parts of the casing, and the wires being crimped into contact with said parts to interconnect the parts, and the wires projecting from the casing on at least one side thereof.
  • the movable contacts are preferably made as thin, elastic blades of a conducting material, which are freely lodged in recesses made in the sides of the selector element opposite the fixed contacts, the recesses incorporat- 3,259,728 Patented July 5, 1966 "ice ing projecting bosses acting as pivot points for the contact blades, by which means the bearing force exerted by a movable contact on the two adjacent, fixed contacts, is exactly balanced.
  • FIG. 1 is a perspective view of a double changeover switch according to the present invention
  • FIG. 2 is a cross-sectional view of the same changeover switch through two of the fixed contacts
  • FIG. 3 is an elevation partially in section of the casing of the same switch
  • FIG. 4 is a perspective exploded view of the selector element carrying the movable contacts.
  • FIGS. 5, 6 and 7 show the combined action, in three different positions of the switch, of the movable and the fixed contacts.
  • the switching arrangement consists of a casing 2 of insulating material, which carries fixed contacts 4 to 4 and inside which there slides a selector element 6 carrying the movable contacts.
  • the selector element 6 may be actuated in any suitable fashion, for instance by a push-button 8 and be continuously influenced by a spring 10.
  • the casing 2 consists of a channel-shaped slide 12 closed by a cover 14.
  • the switching arrangement shown is fitted for establishing two, characteristic connections between the fixed contacts: 4 with 4 and 4 with 4 (FIG. 7); or, 4 with 4 and 4 with 4 (FIG. 5); but it is understood that such a switching arrangement may combine a greater number of changeover switching positions, for instance four or six.
  • the fixed contacts 4 to 4 are in the form of straight wires of circular crosssection, preferably of silver-plated copper, and are force fitted in opposing holes 16 and 18 made in the slide 12 and the cover 14.
  • At least one end of the wires projects outwards from the casing to form connecting terminals, but it is more advantageous as shown, to let both ends of the wire project from the casing to be able to connect them on either side of the switch casing.
  • the circular sec.- tion of the wire terminals enables their ready insertion in printed circuits on which the switching arrangement may be mounted.
  • the fixed contacts 4 to 4 connect the two parts 12 and 14 of the casing 2 and hold them locked by means of necks 20 without any additional fixing means.
  • a length of wire say 4 is cut to the necessary size (FIG. 3) then clamped to form a first neck 20 and the end of the wire inserted in the first hole 16, which has an external, guiding bevel or countersink 16'; then in the second hole 18, which has an internal countersink 18'.
  • the first neck 20 has abutted against the countersink 16', the second neck 20' is made, flush with the outer surface of the casing.
  • the sensitive parts of the fixed contacts are thus protected from dust inside the casing and the crimping of the wires in the holes 16 and 18 prevents the flux or solder from penetrating to the conducting parts of the said, fixed contacts.
  • the movable contacts consist of a strip 22 or 22 of elastic metal preferably plated with a film of silver on the working face, which is folded back in a hooked shape. These movable contacts are freely inserted in notches 24 made in the selector element 6 and having a central boss 28 against which the shorter arm of the elastic blade 22 or 22' can bear.
  • the selector element 6 which may incorporate a locking element (not shown) for securing it in either of its working positions, is moulded of a synthetic plastic material resistant to heat and abrasion, and with low dielectric losses.
  • the bosses 28 on the selector element 6 are so located that in each of the working positions (FIGS. and 7) of the switching arrangement, these bosses are substantially half-way between the adjacent, fixed contacts which are interconnected by the movable contact.
  • the contact pressure is perfectly balanced between the two, fixed contacts, and contact resist,- ances of the order of a few thousandths of an ohm, e.g. 0.003 ohm can be obtained, which are time-stable owing to the self-cleaning effect of the contacts sliding on each other. It will be seen that when passing the intermediate position shown in FIG.
  • the movable contacts 22 tilt slightly on the bosses 28, when their springs are compressed to the maximum, and then take up a new equilibrium position on the contacts 4 -4 (FIG. 7). It will be seen that in this, preferential form of the invention, comprising two, parallel longitudinal rows of fixed and movable contacts, the elasticity of the two opposed, movable contacts 22, 22' is counter-acting and sets up an automatic equilibrium condition, so that the contacts always remain clean, even if one of the spring blades 22 or 22 becomes weakened.
  • a switching arrangement in accordance with the present invention comprises a reduced number of constituent elements and that it can be assembled very quickly and economically.
  • An electric switching arrangement comprising an insulating casing having a plurality of parts carrying fixed contacts and which houses a sliding selector element carrying movable contacts for coacting with the fixed contacts, the latter being formed of straight lengths of wire of circular cross-section inserted in holes made in opposed pairs in opposed parts of the casing, and the wires being crimped into contact with said parts to interconnect the parts, and the wires projecting from the casing on at least one side thereof.
  • the insulating casing consists of a first part in the form of a slideway guiding the selector element on three of its sides, and a second part in the form of a cover guiding the selector element on its fourth side.
  • each of the movable contacts consists of an elastic blade of conducting material folded back upon itself in the form of a J or hook, and fitted in a longitudinal recess opposite the fixed contacts in the selector element, the recess having substantially at the centre of its length a supporting boss on which the shorter arm of the blade can pivot.
  • An electric push-button switch comprising an elongated insulative casing having a rectangular lengthwise passageway therethrough, fixed contacts extending into said passageway and a selector slidably mounted in said passageway; said selector having a recess in at least one side thereof; at least one insulative boss on the selector extending into the recess; said selector carrying at least one rocking conductive element pivotal on said boss to wipe over and bridge contacts extending into said passageway.
  • An electric switch comprising an insulative housing containing relatively fixed and movable contact elements, said housing having one major face closed by a mating cover plate, and said fixed contact elements comprising wire-like conductors extending through close-fitting aligned sets of holes in said cover plate and in an opposite wall of the housing; said conductors extending be.- yond and outside of both said cover plate and said opposite wall, and being crimped adjacent the outer faces of said cover plate and said housing, whereby to secure said cover plate tightly against said housing.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Push-Button Switches (AREA)
  • Slide Switches (AREA)
  • Mechanical Control Devices (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Manufacture Of Switches (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Discharge By Other Means (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Types And Forms Of Lifts (AREA)

Description

July 5, 1966 3,259,728
CHRlSTlAN-MARlE-GODEFROY DU TEMPLE DE ROUGEMONT ETAL ELECTRICAL SWITCH WITH CONTACT ELEMENTS SERVING AS EXTERNAL TERMINALS AND AS ASSEMBLY FASTENERS Filed June '7, 1963 United States Patent 8 Claims. (a. 200-166) This invention relates to an electric switching arrangement having fixed and moving contacts with sliding selector elements,
It is already known that such switching arrangements, usually controlled by a push-button, are extensively used in television and broadcasting receivers to perform the switching of weak-current circuits, of high or low frequency. They are also used for switching highor lowfrequency circuits generally, and for whatever application they are employed, it is endeavoured to obtain the lowest possible electrical resistance between the switch contacts, as well as a good time-stability of this resistance.
It is similarly desirable to ensure a very good behaviour of the components of such switching arrangements, in particular their contacts, in the presence of the high temperatures encountered in using solder baths or soldering irons, as well as a high resistance to shocks and repeated actuation.
Finally, it is important that the components should be capable of fabrication and assembly in automatic machines in order to reduce the cost.
The present invention enables the construction of switching arrangements satisfying these different conditions.
Button-controlled switching arrangements, in general, consist of an insulating casing carrying 'the fixed contacts, with which the moving contacts co-act, and they may also incorporate terminals or current taps for the different external circuits which are connected to the fixed contacts.
At the same time, this casing serves as a guide for a sliding selector element, also formed of insulating material, and which carries the moving contacts. For convenience in manufacture, the insulating casings carrying the fixed contacts are made in at least two parts, one of which is trough-shaped and guides the selector element in the manner of a slide on three sides, while the other part serves as a cover and a guide on the fourth side. It is to be understood, that these two parts must be firmly secured to each other by suitable separate connecting means, or by. connecting means incorporated in such parts.
In accordance with the present invention, the assembly of the two casing parts is effected by means of contacts which are themselves fixed, and not by separate joining means.
The present invention is, therefore, an electric switching arrangement comprising an insulating casing having a plurality of parts carrying fixed contacts and which houses a sliding selector element carrying movable contacts for coacting with the fixed contacts, the latter being formed of straight lengths of wire of circular cross-section inserted in holes made in opposed pairs in opposed parts of the casing, and the wires being crimped into contact with said parts to interconnect the parts, and the wires projecting from the casing on at least one side thereof.
The movable contacts are preferably made as thin, elastic blades of a conducting material, which are freely lodged in recesses made in the sides of the selector element opposite the fixed contacts, the recesses incorporat- 3,259,728 Patented July 5, 1966 "ice ing projecting bosses acting as pivot points for the contact blades, by which means the bearing force exerted by a movable contact on the two adjacent, fixed contacts, is exactly balanced.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawing, in which:
FIG. 1 is a perspective view of a double changeover switch according to the present invention;
FIG. 2 is a cross-sectional view of the same changeover switch through two of the fixed contacts;
FIG. 3 is an elevation partially in section of the casing of the same switch;
FIG. 4 is a perspective exploded view of the selector element carrying the movable contacts; and,
FIGS. 5, 6 and 7 show the combined action, in three different positions of the switch, of the movable and the fixed contacts.
The switching arrangement consists of a casing 2 of insulating material, which carries fixed contacts 4 to 4 and inside which there slides a selector element 6 carrying the movable contacts. The selector element 6 may be actuated in any suitable fashion, for instance by a push-button 8 and be continuously influenced by a spring 10.
The casing 2 consists of a channel-shaped slide 12 closed by a cover 14. The switching arrangement shown, is fitted for establishing two, characteristic connections between the fixed contacts: 4 with 4 and 4 with 4 (FIG. 7); or, 4 with 4 and 4 with 4 (FIG. 5); but it is understood that such a switching arrangement may combine a greater number of changeover switching positions, for instance four or six.
In accordance with the invention, the fixed contacts 4 to 4 are in the form of straight wires of circular crosssection, preferably of silver-plated copper, and are force fitted in opposing holes 16 and 18 made in the slide 12 and the cover 14.
At least one end of the wires projects outwards from the casing to form connecting terminals, but it is more advantageous as shown, to let both ends of the wire project from the casing to be able to connect them on either side of the switch casing. At the same time, the circular sec.- tion of the wire terminals enables their ready insertion in printed circuits on which the switching arrangement may be mounted.
The fixed contacts 4 to 4 connect the two parts 12 and 14 of the casing 2 and hold them locked by means of necks 20 without any additional fixing means. In practice, when assembling, a length of wire, say 4 is cut to the necessary size (FIG. 3) then clamped to form a first neck 20 and the end of the wire inserted in the first hole 16, which has an external, guiding bevel or countersink 16'; then in the second hole 18, which has an internal countersink 18'. As soon as the first neck 20 has abutted against the countersink 16', the second neck 20' is made, flush with the outer surface of the casing. The sensitive parts of the fixed contacts are thus protected from dust inside the casing and the crimping of the wires in the holes 16 and 18 prevents the flux or solder from penetrating to the conducting parts of the said, fixed contacts.
The movable contacts consist of a strip 22 or 22 of elastic metal preferably plated with a film of silver on the working face, which is folded back in a hooked shape. These movable contacts are freely inserted in notches 24 made in the selector element 6 and having a central boss 28 against which the shorter arm of the elastic blade 22 or 22' can bear. The selector element 6 which may incorporate a locking element (not shown) for securing it in either of its working positions, is moulded of a synthetic plastic material resistant to heat and abrasion, and with low dielectric losses.
The bosses 28 on the selector element 6 are so located that in each of the working positions (FIGS. and 7) of the switching arrangement, these bosses are substantially half-way between the adjacent, fixed contacts which are interconnected by the movable contact. Thus, in either of these positions, the contact pressure is perfectly balanced between the two, fixed contacts, and contact resist,- ances of the order of a few thousandths of an ohm, e.g. 0.003 ohm can be obtained, which are time-stable owing to the self-cleaning effect of the contacts sliding on each other. It will be seen that when passing the intermediate position shown in FIG. 6, the movable contacts 22 tilt slightly on the bosses 28, when their springs are compressed to the maximum, and then take up a new equilibrium position on the contacts 4 -4 (FIG. 7). It will be seen that in this, preferential form of the invention, comprising two, parallel longitudinal rows of fixed and movable contacts, the elasticity of the two opposed, movable contacts 22, 22' is counter-acting and sets up an automatic equilibrium condition, so that the contacts always remain clean, even if one of the spring blades 22 or 22 becomes weakened.
It is thus clear that a switching arrangement in accordance with the present invention comprises a reduced number of constituent elements and that it can be assembled very quickly and economically.
We claim:
1. An electric switching arrangement comprising an insulating casing having a plurality of parts carrying fixed contacts and which houses a sliding selector element carrying movable contacts for coacting with the fixed contacts, the latter being formed of straight lengths of wire of circular cross-section inserted in holes made in opposed pairs in opposed parts of the casing, and the wires being crimped into contact with said parts to interconnect the parts, and the wires projecting from the casing on at least one side thereof.
2. A switching arrangement in accordance with claim 1, wherein the insulating casing consists of a first part in the form of a slideway guiding the selector element on three of its sides, and a second part in the form of a cover guiding the selector element on its fourth side.
3. A switching arrangement in accordance with claim 1, wherein the opposed holes are of a diameter just suflicient to enable the wires to be push-fitted into said holes.
4. A switching arrangement in accordance with claim 1, wherein each of the movable contacts consists of an elastic blade of conducting material folded back upon itself in the form of a J or hook, and fitted in a longitudinal recess opposite the fixed contacts in the selector element, the recess having substantially at the centre of its length a supporting boss on which the shorter arm of the blade can pivot.
5. A switching arrangement in accordance with claim 1, in which the selector element is actuable by a push button thereon.
6. A switching arrangement in accordance with claim 1, in which the selector element is spring-biased.
7. An electric push-button switch comprising an elongated insulative casing having a rectangular lengthwise passageway therethrough, fixed contacts extending into said passageway and a selector slidably mounted in said passageway; said selector having a recess in at least one side thereof; at least one insulative boss on the selector extending into the recess; said selector carrying at least one rocking conductive element pivotal on said boss to wipe over and bridge contacts extending into said passageway.
8. An electric switch comprising an insulative housing containing relatively fixed and movable contact elements, said housing having one major face closed by a mating cover plate, and said fixed contact elements comprising wire-like conductors extending through close-fitting aligned sets of holes in said cover plate and in an opposite wall of the housing; said conductors extending be.- yond and outside of both said cover plate and said opposite wall, and being crimped adjacent the outer faces of said cover plate and said housing, whereby to secure said cover plate tightly against said housing.
References Cited by the Examiner UNITED STATES PATENTS 2,919,315 12/1950 Woofter 200-153 X 3,019,323 1/1962 Daniels 200164 X 3,072,757 1/1963 Gluck 20016 3,157,751 11/1964 Van den Berk 200 16 FOREIGN PATENTS 1,123,011 2/1962 Germany.
KATHLEEN H. CLAFFY, Primary Examiner.
BERNARD A. GILHEANY, Examiner.
H. O. JONES, Assistant Examiner.

Claims (1)

1. AN ELECTRIC SWITCHING ARRANGEMENT COMPRISING AN INSULATING CASING HAVING A PLURALITY OF PARTS CARRYING FIXED CONTACTS AND WHICH HOUSES A SLIDING SELECTOR ELEMENT CARRYING MOVABLE CONTACTS FOR COACTING WITH THE FIXED CONTACTS, THE LATTER BEING FORMED OF STRAIGHT LENGTHS OF WIRE OF CIRCULAR CROSS-SECTION INSERTED IN HOLES MADE IN OPPOSED PAIRS IN
US286307A 1962-06-16 1963-06-07 Electrical switch with contact elements serving as external terminals and as assembly fasteners Expired - Lifetime US3259728A (en)

Applications Claiming Priority (1)

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FR900983A FR1335017A (en) 1962-06-16 1962-06-16 Improvements to key operated switches

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US3259728A true US3259728A (en) 1966-07-05

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US286308A Expired - Lifetime US3229548A (en) 1962-06-16 1963-06-07 Positioning and locking device for pushbutton controlled arrangements
US286307A Expired - Lifetime US3259728A (en) 1962-06-16 1963-06-07 Electrical switch with contact elements serving as external terminals and as assembly fasteners
US286339A Expired - Lifetime US3259699A (en) 1962-06-16 1963-06-07 Assembly mounting and interlocking means for plural pushbutton switches

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US286308A Expired - Lifetime US3229548A (en) 1962-06-16 1963-06-07 Positioning and locking device for pushbutton controlled arrangements

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US286339A Expired - Lifetime US3259699A (en) 1962-06-16 1963-06-07 Assembly mounting and interlocking means for plural pushbutton switches

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DE (4) DE1213194B (en)
ES (3) ES288612A1 (en)
FR (1) FR1335017A (en)
GB (4) GB993544A (en)
IT (1) IT699906A (en)
NL (3) NL294092A (en)

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US3507973A (en) * 1968-05-01 1970-04-21 Lee De Pree Touch sensitive capacitor timing percussion keying circuit
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US4001526A (en) * 1974-07-12 1977-01-04 Molex Incorporated Alternate action switch
US4778964A (en) * 1985-09-26 1988-10-18 Nihon Kaiheiki Industrial Company Ltd. Subminiature switch with common and stationary switching contacts
US20070024588A1 (en) * 2005-07-26 2007-02-01 Yin Memphis Z Keyboard lighting device
US11081307B2 (en) 2017-10-16 2021-08-03 Schneider Electric Industries Sas Electrical power supply disconnector for a protection module and protection module including such a disconnector

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3352980A (en) * 1964-10-14 1967-11-14 Godefroy Marie Christiau Du De Slidable switch actuator contacts and structure associated therewith
US3507973A (en) * 1968-05-01 1970-04-21 Lee De Pree Touch sensitive capacitor timing percussion keying circuit
US3646300A (en) * 1969-11-19 1972-02-29 Alps Electric Co Ltd Contact switch
DE2337904A1 (en) * 1972-07-26 1974-02-07 Datanetics Corp ENTER KEY
US4001526A (en) * 1974-07-12 1977-01-04 Molex Incorporated Alternate action switch
US4778964A (en) * 1985-09-26 1988-10-18 Nihon Kaiheiki Industrial Company Ltd. Subminiature switch with common and stationary switching contacts
US20070024588A1 (en) * 2005-07-26 2007-02-01 Yin Memphis Z Keyboard lighting device
US11081307B2 (en) 2017-10-16 2021-08-03 Schneider Electric Industries Sas Electrical power supply disconnector for a protection module and protection module including such a disconnector

Also Published As

Publication number Publication date
DE1540327B1 (en) 1971-04-22
DE1229171B (en) 1966-11-24
DE1236054B (en) 1967-03-09
ES288614A1 (en) 1963-11-01
ES288613A1 (en) 1963-11-01
GB1054915A (en) 1967-01-11
IT699906A (en) 1900-01-01
US3259699A (en) 1966-07-05
FR1335017A (en) 1963-08-16
NL294093A (en) 1965-04-12
NL294094A (en) 1965-04-12
ES288612A1 (en) 1963-11-01
GB993544A (en) 1965-05-26
DE1213194B (en) 1966-03-24
NL294092A (en) 1965-04-12
US3229548A (en) 1966-01-18
GB1054914A (en) 1967-01-11
GB993814A (en) 1965-06-02

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