US3679849A - Switch with a delay mechanism - Google Patents

Switch with a delay mechanism Download PDF

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Publication number
US3679849A
US3679849A US114459A US3679849DA US3679849A US 3679849 A US3679849 A US 3679849A US 114459 A US114459 A US 114459A US 3679849D A US3679849D A US 3679849DA US 3679849 A US3679849 A US 3679849A
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US
United States
Prior art keywords
switch
projection
intermediate member
delay mechanism
movable
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
US114459A
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English (en)
Inventor
Cornelis Willem Zwiep
Bernardus Ignatius Maria Steen
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.)
US Philips Corp
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3679849A publication Critical patent/US3679849A/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0066—Auxiliary contact devices
    • 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
    • H01H13/20—Driving mechanisms
    • H01H13/24—Driving mechanisms with means for introducing a predetermined time delay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts

Definitions

  • the invention relates to a switch having a primary switch and a secondary switch.
  • the primary switch When in the ON position, the primary switch exerts a force on an actuating member of the secondary switch, which actuating member springs back as soon as the force is removed.
  • a delay mechanism determines the time during which the force is exerted.
  • Such switches may be used in color television receivers for the purpose of operating a demagnetizing circuit, which is to be switch off after having done its work, through the secondary switch immediately after the receiver has been switched on through the primary switch.
  • a switch having a primary switch with a projection which is coupled to the moving mechanism of the primary switch so as to be in an initial position when the primary switch has been switch off and in a switching position when the primary switch has been switched on.
  • the projection When in the on position the projection is closer to the actuating member of the secondary switch than it is in the initial position.
  • An intermediate member is provided which is coupled with the delay mechanism and, when the primary switch is switched on, is located in the space between the projection and the said actuating member. The intermediate member is caused to be set to an inoperative position by the delay mechanism some time after the switching Operation.
  • This arrangement enables the assembly to be built from standard components, such as an on-off switch, a microswitch and a bimetal.
  • the intermediate member is the only specially designed component and can simply and cheaply be manufactured.
  • FIG. 1 is a side elevation of a switch assembly with the primary switch in the off position
  • FIG. 2 is a rear view of the switch assembly of FIG. I.
  • a switch assembly includes a primary switch 1 having a push-button 3 which is connected to a button rod 5, which by means of toggle springs 7 drives a switch rod 9 which carries moving contacts 11 which cooperate with fixed contacts 13.
  • the assembly is secured in a casing 15 which is mounted on a frame 17.
  • This frame further carries a secondary switch 19, which is operative only when its actuating pin 21 is maintained in the depressed position, and a bimetal 23, to which a heating element 27 is secured by means of a resilient strip 25 shown in broken lines.
  • the heating element can be fed from a voltage source 31 through the secondary switch 19 and connecting leads 29 (see FIG. 2 also).
  • a circuit 32 (such as a demagnetizing circuit-not shown)-may be similarly fed through the secondary switch 19.
  • a projection 33 is formed at the end of button rod 5.
  • the projection 33 cooperates with an intermediate U-shaped leaf spring member 35.
  • Pull rod 37 (see FIG. 3) is connected to member 35 and is pivotally connected to the bimetal 23 at the end thereof which is provided with a bent-over part 39. Pull rod 37 is accommodated with some clearance in an opening 41 formed in the bimetal 23 near the free end thereof.
  • the switch assembly is preferably designed so that first the secondary switch 19 and then the primary switch 1 is switched on. When both switches are on the heating element 27 is switched on, so that the bimetal 23 is heated and deflected. After some time, the situation shown in FIG. 4 is produced.
  • the bimetal has pulled the leaf spring 35 from the space between the projection 33 and the actuating pin 21 through a distance such that the limb 43 no longer engages the surface of the projection 33 facing the actuating pin 21, so that the force acting on the actuating pin 21 has been removed.
  • the actuating pin 21 has sprung back to its initial position, so that the leaf spring 35, the end 47 of the limb 45 of which still bears against the actuating pin 21, has been pivoted from the operative position (FIG. 3) to a locked position (HO. 4) in which it is inoperative as an intermediate member.
  • the described primary switch provided with a push-button may readily be replaced by a switch of a different type, for example a toggle switch or a rotary switch.
  • the bimetal may be replaced by another delay mechanism.
  • the spring 35 may be replaced by a block which is displaceably provided at the free end of the bimetal 23 and which, after having been withdrawn from the space between the actuating pin 21 and the projection 33, is slightly displaced against the direction of depression of the projection 33, for example by a spring.
  • a switch with a delay mechanism comprising a frame, a primary switch carried on said frame having a member movable between OFF and ON switching positions, a projection attached to said movable member, means connected to said movable member for causing movement thereof, a secondary switch carried on said frame having a spring load actuating member movable against the action of the spring loading from an OFF to an ON switching position, an intermediate member movable from an operative position when located between said projection of the primary switch and said actuating member of the secondary switch to an inoperative position located partially removed from between said projection and said actuating member, so that when said intermediate member is in its operative position movement of said movable member of the primary switch to the ON position will be transferred by said intermediate member so as to exert a force on said actuating member against the action of said spring loading to cause movement thereof to the ON position, and a delay mechanism connected to said intermediate member for causing movement thereof to the inoperative position a predetermined time afler said secondary switch has been switched ON so that the force exerted on
  • said delay mechanism comprises a bimetallic element oriented in a plane approximately parallel to the direction of movement of said projection, means connected to said bimetallic element for electrically heating same when said secondary switch has been switched ON, an opening formed at one end of said element, and a pull rod one end thereof passing through said opening and the other end thereof connected to said intermediate member.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Push-Button Switches (AREA)
  • Thermally Actuated Switches (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Adhesives Or Adhesive Processes (AREA)
US114459A 1970-03-31 1971-02-11 Switch with a delay mechanism Expired - Lifetime US3679849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7004569A NL7004569A (en, 2012) 1970-03-31 1970-03-31

Publications (1)

Publication Number Publication Date
US3679849A true US3679849A (en) 1972-07-25

Family

ID=19809720

Family Applications (1)

Application Number Title Priority Date Filing Date
US114459A Expired - Lifetime US3679849A (en) 1970-03-31 1971-02-11 Switch with a delay mechanism

Country Status (8)

Country Link
US (1) US3679849A (en, 2012)
JP (2) JPS463879B1 (en, 2012)
CA (1) CA929194A (en, 2012)
DE (2) DE2108029B2 (en, 2012)
FR (1) FR2083695B1 (en, 2012)
GB (1) GB1346482A (en, 2012)
NL (1) NL7004569A (en, 2012)
SE (1) SE365649B (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5790009A (en) * 1997-01-21 1998-08-04 Black & Decker Inc. Thermostat reset with additional electrical switch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426970A1 (fr) * 1978-05-26 1979-12-21 Jaeger Interrupteur temporise
JPS62154489U (en, 2012) * 1986-03-24 1987-09-30
JPS6368693U (en, 2012) * 1986-10-24 1988-05-09

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438186A (en) * 1946-01-25 1948-03-23 Stewart Warner Corp Time-delay switch
US2577425A (en) * 1949-07-29 1951-12-04 Marcoz Jean Thermal cutout switches
US2821631A (en) * 1955-05-23 1958-01-28 Philco Corp Signal-seeking device
US2958748A (en) * 1959-04-27 1960-11-01 Cts Corp Combination electrical control
US3236971A (en) * 1963-02-28 1966-02-22 Zenith Radio Corp Combination on-off switch and circuit-breaker
US3361888A (en) * 1966-03-01 1968-01-02 Wood Electric Corp Trip-free circuit breaker with thermally responsive snap action switch
US3413431A (en) * 1967-06-29 1968-11-26 Stackpole Carbon Co Snap action slide switch
US3496509A (en) * 1966-12-02 1970-02-17 Electronics Corp America Manually resettable safety lockout switch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH288566A (de) * 1951-03-05 1953-01-31 Elcalor Ag Schalteinrichtung für Kochherde und andere elektrische Wärmegeräte.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438186A (en) * 1946-01-25 1948-03-23 Stewart Warner Corp Time-delay switch
US2577425A (en) * 1949-07-29 1951-12-04 Marcoz Jean Thermal cutout switches
US2821631A (en) * 1955-05-23 1958-01-28 Philco Corp Signal-seeking device
US2958748A (en) * 1959-04-27 1960-11-01 Cts Corp Combination electrical control
US3236971A (en) * 1963-02-28 1966-02-22 Zenith Radio Corp Combination on-off switch and circuit-breaker
US3361888A (en) * 1966-03-01 1968-01-02 Wood Electric Corp Trip-free circuit breaker with thermally responsive snap action switch
US3496509A (en) * 1966-12-02 1970-02-17 Electronics Corp America Manually resettable safety lockout switch
US3413431A (en) * 1967-06-29 1968-11-26 Stackpole Carbon Co Snap action slide switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5790009A (en) * 1997-01-21 1998-08-04 Black & Decker Inc. Thermostat reset with additional electrical switch

Also Published As

Publication number Publication date
FR2083695B1 (en, 2012) 1975-07-04
FR2083695A1 (en, 2012) 1971-12-17
NL7004569A (en, 2012) 1971-10-04
SE365649B (en, 2012) 1974-03-25
CA929194A (en) 1973-06-26
DE2108029A1 (de) 1971-11-04
DE2108029B2 (de) 1972-12-21
DE7106361U (de) 1971-10-28
JPS5328625B1 (en, 2012) 1978-08-16
GB1346482A (en) 1974-02-13
JPS463879B1 (en, 2012) 1971-11-08

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