US3258548A - Three position slide bar type switch - Google Patents

Three position slide bar type switch Download PDF

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Publication number
US3258548A
US3258548A US337273A US33727364A US3258548A US 3258548 A US3258548 A US 3258548A US 337273 A US337273 A US 337273A US 33727364 A US33727364 A US 33727364A US 3258548 A US3258548 A US 3258548A
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US
United States
Prior art keywords
contacts
contact
switch
strip
cam
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.)
Expired - Lifetime
Application number
US337273A
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English (en)
Inventor
Roger J Cartier
Passetchnik Jean Jacques
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.)
Controls Company of America
Original Assignee
Controls Company of America
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 Controls Company of America filed Critical Controls Company of America
Application granted granted Critical
Publication of US3258548A publication Critical patent/US3258548A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H1/20—Bridging contacts
    • 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
    • H01H19/62—Contacts actuated by radial cams
    • H01H19/626—Contacts actuated by radial cams actuating bridging contacts
    • 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

Definitions

  • drum is rotating at speed in one direction.
  • One object of the present invention is to provide an electric reversing switch device having generally improved performance.
  • Another object of the invention is to provide an improved electric switch device having increased switching capacity within a confined space.
  • Another object of the invention is to provide an improved electric switch device developing adequate contact pressure when the switch is rnade.
  • Another object of the invention is to provide an improved electric switch device which facilitates breaking of the switch contacts in the event of the contacts becoming welded together.
  • FIGURE 1 is a side elevation; part in section on the line I-I of FIGURE 2, of a cam-actuated reversing switch;
  • FIGURE 2 is an end View, part in section along the line II--II of FIGURE 1 of the same switch as is shown in FIGURE l;
  • FIGURE 3 is an underneath view of the switch of FIGURE 1;
  • FIGURE 4 is a plan of the electrical connections of the reversing switch contacts, and the windings of a reversible motor controlled by the switch;
  • FIGURE 5 shows the electric layout of the connections of the reversible motor with the reversing switch
  • fFIGURE 6 is a working dialgram of t-he reversing switch and the reversible motor.
  • the switch device comprises an insulating support or base 1 in which xed .blades Zal to 2f1 and 2:12 to 2f2 are distributed in two longitudinal parallel rows and perpendicular to the longitudinal axis of the ⁇ device and each supporting separate contacts 3a, to 3f, and 3a2 to 312.
  • a movable switch member in the form ice of an insulating strip 6 of substantially rectangular section.
  • the ends of strip 6 are guided into corresponding openings in a support 1, and the intermediate part of said strip is slidable in guides formed by feet 1a of the support 1.
  • the strip 6 forms the supporting element for the movable parts of the reversing switch and carries the movable contact elements formed by conductor bridges 7a, 7b, 7c, 7d, and 9a, 9b.
  • Each of the four bridges 7a to 7d carries two contacts Sal, Saz to Sdl, 8d2, respectively, and each of bridges 9a and 9b carries three contacts 10111, 10112, 10b and 10c, 1002, 10d, respectively.
  • each of the contact-carrying conductor bridges 7a to 7d, 9a and 9b has a rectangular section hole through which passes the strip 6, in a sliding fit.
  • the section of each hole is such that not only can the strip 6 slide with- Iin the hole but the bridge can take up an oblique position rela-tive to the strip when it suffers a constraint due to the fact that one of the contacts which it sup-ports engages its corresponding fixed contact before the other of the contacts which it supports contacts its correspon-ding fixed contact.
  • each of the bridges is resilicntly biased in the direction of the group of fixed contacts with which it co-operates, this being effected by means of springs 11, 12, each of said springs being common to two bridges which it thus tends to move away from one another.
  • the rest position of the movable contacts is determined by stops 13b to 13d and for the end bridge 7a by a shoulder 6a on the strip 6.
  • actuation is effected by a cam 15 fixed on a shaft 15x and whose profile is formed by steps 15e, 15a1, 15b, 15o, 15a2 and 15d arranged at different radial distances and conne-cted to one another by steeply inclined cam portions.
  • the cam 15 acts on a cam follower 16a at the end of one of the arms of a lever 16 pivoted at 1'7 and whose other arm has, set at right-angles thereto, a small tongue 16b whose end is engaged in a hole 18 in the strip 6.
  • a spring 19 acts on the lever 16 to keep the cam follower 16a constantly in contact with the cam 15.
  • the essential working characteristic of the switch is dependent on the sequential closing and/ or -opening of certain contacts.
  • the speed of opening and/ or closing of lcontacts is automatically determined by the profile of the cam and its speed of rotation.
  • the switch described above has numerous applications in effecting delayed operation of the controls of certain circuits or devices. It is, however, particularly ⁇ applicable in controlling the direction of rotation of a reversible motor which it is desired to stop, after rotation in a certain direction, before the supply is re-connected for rotation in the opposite direction.
  • FIGURE 5 The branch circuit layout of FIGURE 5 is obtained when the fixed blades of the reversing switch are connected, in the manner shown in FIGURE 4, to the auxiliary windings of a single-phase motor.
  • FIGURE 6 wherein:
  • T is the time abscissa
  • G is the time for the rotation, in the two directions, of the motor.
  • the switch device described above is particularly suitable for use as a reverser to control the direction of rotation of a reversible electric motor, such as the motor driving the clothes drum of -a washing machine
  • the device can equally well be arranged to act as contact maker, circuit breaker, controller, change-over switch, or the like, with a stepped or sequential action.
  • a problem with a sliding type switch actuator is to develop adequate contact pressure when the switch contacts close. By causing slight overtravel of the sliding strip 6 in the above-described switch device, the respective springs 11 will act to develop the desired contact pressure.
  • a switching mechanism including,
  • each contact bar being arranged in a non-planar manner whereby the contact bar makes contact with a middle and one end contact first and then pivots on the middle contact to close on the other end contact as the slide bar moves in the closing direction,

Landscapes

  • Control Of Position Or Direction (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Mechanical Control Devices (AREA)
  • Push-Button Switches (AREA)
US337273A 1963-01-18 1964-01-13 Three position slide bar type switch Expired - Lifetime US3258548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR921880A FR1354166A (fr) 1963-01-18 1963-01-18 Dispositif pour la commande d'ouverture et de fermeture de circuits électriques à action échelonnée

Publications (1)

Publication Number Publication Date
US3258548A true US3258548A (en) 1966-06-28

Family

ID=8795010

Family Applications (1)

Application Number Title Priority Date Filing Date
US337273A Expired - Lifetime US3258548A (en) 1963-01-18 1964-01-13 Three position slide bar type switch

Country Status (4)

Country Link
US (1) US3258548A (de)
DE (1) DE1465356A1 (de)
FR (1) FR1354166A (de)
GB (1) GB1052662A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032731A (en) * 1976-01-20 1977-06-28 Waldman Corporation Push-pull switch for use in an electronic watch
EP0001317A1 (de) * 1977-07-16 1979-04-04 Ranco Incorporated Hebelvorrichtung mit Kunststoffscharnier zur Übertragung einer Bewegung
US4405848A (en) * 1980-08-22 1983-09-20 Siemens Aktiengesellschaft Electric contact arrangement
US4471178A (en) * 1981-03-16 1984-09-11 Mitsubishi Denki Kabushiki Kaisha Auxiliary circuit breaker
US4650945A (en) * 1982-07-26 1987-03-17 Emhart Industries, Inc. Four terminal switch
US4950846A (en) * 1989-06-19 1990-08-21 Westinghouse Electric Corp. Multiple pole electric relay
US8586889B2 (en) 2011-04-12 2013-11-19 Amphenol Corporation Multiposition switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361828A1 (fr) * 1976-08-17 1978-03-17 Deral Sa Conservation et valorisation de vegetaux en vert et de sous-produits humides des industries agro-alimentaires

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671836A (en) * 1950-03-29 1954-03-09 Square D Co Electromagnetic relay
US2831938A (en) * 1954-05-26 1958-04-22 Gen Motors Corp Circuit breaker
US2839623A (en) * 1956-01-23 1958-06-17 Int Register Co Time switch mechanism
US2885516A (en) * 1956-08-13 1959-05-05 Square D Co Contact holder
US2892047A (en) * 1956-02-07 1959-06-23 Mallory & Co Inc P R Dryer switch
US3018338A (en) * 1958-12-18 1962-01-23 Westinghouse Electric Corp Control switches
US3040142A (en) * 1959-10-22 1962-06-19 Arrow Hart & Hegeman Electric Lighted push button starting switch
US3142187A (en) * 1960-12-22 1964-07-28 Gen Electric Rotatable switch actuators

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671836A (en) * 1950-03-29 1954-03-09 Square D Co Electromagnetic relay
US2831938A (en) * 1954-05-26 1958-04-22 Gen Motors Corp Circuit breaker
US2839623A (en) * 1956-01-23 1958-06-17 Int Register Co Time switch mechanism
US2892047A (en) * 1956-02-07 1959-06-23 Mallory & Co Inc P R Dryer switch
US2885516A (en) * 1956-08-13 1959-05-05 Square D Co Contact holder
US3018338A (en) * 1958-12-18 1962-01-23 Westinghouse Electric Corp Control switches
US3040142A (en) * 1959-10-22 1962-06-19 Arrow Hart & Hegeman Electric Lighted push button starting switch
US3142187A (en) * 1960-12-22 1964-07-28 Gen Electric Rotatable switch actuators

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032731A (en) * 1976-01-20 1977-06-28 Waldman Corporation Push-pull switch for use in an electronic watch
EP0001317A1 (de) * 1977-07-16 1979-04-04 Ranco Incorporated Hebelvorrichtung mit Kunststoffscharnier zur Übertragung einer Bewegung
US4405848A (en) * 1980-08-22 1983-09-20 Siemens Aktiengesellschaft Electric contact arrangement
US4471178A (en) * 1981-03-16 1984-09-11 Mitsubishi Denki Kabushiki Kaisha Auxiliary circuit breaker
US4650945A (en) * 1982-07-26 1987-03-17 Emhart Industries, Inc. Four terminal switch
US4950846A (en) * 1989-06-19 1990-08-21 Westinghouse Electric Corp. Multiple pole electric relay
US8586889B2 (en) 2011-04-12 2013-11-19 Amphenol Corporation Multiposition switch

Also Published As

Publication number Publication date
DE1465356A1 (de) 1969-07-17
GB1052662A (de)
FR1354166A (fr) 1964-03-06

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