US3824510A - Mechanical interlock for electric switches - Google Patents

Mechanical interlock for electric switches Download PDF

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Publication number
US3824510A
US3824510A US00380564A US38056473A US3824510A US 3824510 A US3824510 A US 3824510A US 00380564 A US00380564 A US 00380564A US 38056473 A US38056473 A US 38056473A US 3824510 A US3824510 A US 3824510A
Authority
US
United States
Prior art keywords
interlock
frame
switching devices
relay
movement
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
US00380564A
Other languages
English (en)
Inventor
A Kolb
J Gilmore
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.)
Cutler Hammer Inc
Original Assignee
Cutler Hammer Inc
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 Cutler Hammer Inc filed Critical Cutler Hammer Inc
Priority to US00380564A priority Critical patent/US3824510A/en
Priority to CA204,010A priority patent/CA1008495A/en
Priority to SE7408832A priority patent/SE7408832L/
Priority to DE2432531A priority patent/DE2432531A1/de
Priority to NO742448A priority patent/NO742448L/no
Priority to DK362274A priority patent/DK362274A/da
Priority to FR7423419A priority patent/FR2238233B1/fr
Priority to BE146334A priority patent/BE817380A/fr
Priority to NL7409277A priority patent/NL7409277A/xx
Application granted granted Critical
Priority to IT52141/74A priority patent/IT1016445B/it
Publication of US3824510A publication Critical patent/US3824510A/en
Priority to ES428371A priority patent/ES428371A1/es
Priority to GB3171374A priority patent/GB1468072A/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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays

Definitions

  • the interlock is a compact one piece member comprising a frame, anchorage means for anchoring the frame between two relay assemblies, each relay assembly having a respective armature, and an interlock element suspended within the frame by an integral flexible link for movement laterally of the frame, to prevent simultaneous actuation of the relay armatures.
  • the interlock element has inclined surfaces extending laterally of the frame and into the paths of movement of the two armatures so that the interlock element is laterally displaced to obstruct the path of movement of one armature whenever the other engages the inclined surface thereof.
  • a typical usage of relay apparatus is to connect motor windings of either a two speed or reversible motor directly across the power lines, and consequently, means must be provided to preclude simultaneous closing of the individual relays. Hence, it is a requirement that such relays be positively interlocked to prevent the completion of a circuit through more than one relay at any given instant.
  • the general object of the present invention is to provide an improved mechanical interlock of the type described which circumvents the problems heretofore noted as well as other disadvantages of the prior art.
  • An additional object of the present invention is to provide a mechanical interlock device which spatially aligns and anchors two adjacent relay devices without the need for a common support bracket for mounting the relays.
  • Another object of the instant invention is to provide a mechanical interlock which is so constructed that its application to associated relay apparatus requires no.
  • a further object of the present invention is to provide a mechanical interlock which affords ready and free movement of various associated movable parts and which requires negligible effort to cause interlocking action between such parts.
  • a still further object of the invention is to provide a tamper proof mechanical interlock for relay apparatus.
  • FIG. 1 is a front elevational view of the one piece mechanical interlock constructed in accordance with the instant invention.
  • FIG. 2 is a sectional view taken along line 2-2 of the mechanical interlock shown in FIG. 1.
  • FIG. 3 is a diagrammatic side view of two adjacent electromagnetic relay apparatus embodying the mechanical interlock of the present invention.
  • FIG. 4 is a front elevational view showing the mechanical interlock of the instant invention illustrating analternate anchorage arrangement therefor.
  • FIG. 5 is a sectional view taken along line 55 of the mechanical interlock shown in FIG. 4.
  • FIG. 6 is a side view of two adjacent electromagnetic relay apparatus embodying the mechanical interlock shown in FIGS. 4 and 5.
  • the interlock member of the present invention is shown comprising a frame 10 in which a pair of interlock elements 12 and 14 are suspended by a flexible link 16. Further included are outward extensions 18 and 20 of the frame 10 which support hooks or anchorage elements 22, 24, 26 and 28 for anchoring adjacent relay assemblies.
  • the frame 10 comprises a peripheral rib 30 surrounding a web 32 and leaving an aperture 34 disposed centrally in the upper portion of the frame 10 and as seen in FIG. 1, the aperture 34 accommodates the link 16 and interlock elements 12 and 14.
  • the link 16 is in the form of a thin strap or web connecting the interlock elements 12 and 14 to the upper part of the frame 10 and is freely bendable to permit displacement of the interlock elements 12 and 14 laterally of the frame and perpendicular to the plane of the paper in FIG. 1.
  • the upper edges of the interlock elements 12 and 14 are curved and present inclined surfaces adjacent the link 16. These surfaces are engageable by the armatures 36 and 38 of the relay elements 40 and-42 when the interlock member is installed between the relay ele ments 40 and 42 as shown in FIG. 3.
  • the anchorage elements 22 to 28 engage in complementary recesses 52 and 54 respectively in the relay elements 40 and 42 to retain the frame 10 in position between the two relay elements. Facing side walls of the relay elements 40 and 42 abut the rib 30.
  • the interlock elements 12 and 14 project into the paths of movement of both armatures 36 and 38 when the relay elements are de-energized. If one of the armatures is actuated, as shown for the armature 'since the interlock elements 12 and 14 obstruct its path of displacement since the interlock elements will be An alternate anchorage arrangement for the mechan- 'ical interlock of the present invention is shown in FIGS.
  • extension 70 is positioned laterally of frame 10 and generally above interference elements 12 and 14, and that in such position, elements 72 and 74 thereon engage in complimentary recesses 90 and 92 in relay elements 76 and 78 and cooperate with elements 22, 24, 26 and 28 therebelow, to achieve optimal spatial alignment between the relay elements should they be mounted on an uneven surface.
  • an additional extension (not shown) could be positioned on the left side of frame 10 directly opposite extension 70 to even further ensure proper alignment between the respective parts.
  • these alternate anchorage arrangements enhance the stability of performance of the mechanical interlock disclosed hereinbefore.
  • the present invention provides a substantial improvement in reducing the number of component parts for mechanical interlocks for relay type and other switching devices. It will also be readily recognized that such reduction of parts coupled with the unique arrangement of the interlock and anchorage elements maintained in this position by the side of the armature provides a highly efficient and durable switch which is inexpensive to manufacture and readily adaptable to existing relay assemblies without the need for extensive or expensive modifications to the relay housing or internal component parts.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Fuses (AREA)
US00380564A 1973-07-19 1973-07-19 Mechanical interlock for electric switches Expired - Lifetime US3824510A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US00380564A US3824510A (en) 1973-07-19 1973-07-19 Mechanical interlock for electric switches
SE7408832A SE7408832L (fr) 1973-07-19 1974-07-04
DE2432531A DE2432531A1 (de) 1973-07-19 1974-07-04 Mechanische verriegelungsvorrichtung fuer elektrische schalter
CA204,010A CA1008495A (en) 1973-07-19 1974-07-04 Mechanical interlock for electric switches
DK362274A DK362274A (fr) 1973-07-19 1974-07-05
FR7423419A FR2238233B1 (fr) 1973-07-19 1974-07-05
NO742448A NO742448L (fr) 1973-07-19 1974-07-05
BE146334A BE817380A (fr) 1973-07-19 1974-07-08 Dispositif d'enclenchement mecanique d'une paire de commutateurs
NL7409277A NL7409277A (nl) 1973-07-19 1974-07-09 Mechanische grendelinrichting voor een elektri- sche schakelaar.
IT52141/74A IT1016445B (it) 1973-07-19 1974-07-16 Dispositivo meccanico a mutuo bloc caggio per interruttori elettrici
ES428371A ES428371A1 (es) 1973-07-19 1974-07-17 Un dispositivo de enclavamiento mecanico para un par de dispositivos de interrupcion.
GB3171374A GB1468072A (en) 1973-07-19 1974-07-17 Mechanical interlock member for electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00380564A US3824510A (en) 1973-07-19 1973-07-19 Mechanical interlock for electric switches

Publications (1)

Publication Number Publication Date
US3824510A true US3824510A (en) 1974-07-16

Family

ID=23501645

Family Applications (1)

Application Number Title Priority Date Filing Date
US00380564A Expired - Lifetime US3824510A (en) 1973-07-19 1973-07-19 Mechanical interlock for electric switches

Country Status (12)

Country Link
US (1) US3824510A (fr)
BE (1) BE817380A (fr)
CA (1) CA1008495A (fr)
DE (1) DE2432531A1 (fr)
DK (1) DK362274A (fr)
ES (1) ES428371A1 (fr)
FR (1) FR2238233B1 (fr)
GB (1) GB1468072A (fr)
IT (1) IT1016445B (fr)
NL (1) NL7409277A (fr)
NO (1) NO742448L (fr)
SE (1) SE7408832L (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385204A1 (fr) * 1977-03-26 1978-10-20 Bbc Brown Boveri & Cie Bloc a deux contacteurs combines
FR2454171A1 (fr) * 1979-04-13 1980-11-07 Telemecanique Electrique Dispositif de verrouillage pour deux boutons-poussoirs
FR2454653A1 (fr) * 1979-04-17 1980-11-14 Telemecanique Electrique Dispositif de verrouillage pour deux boutons-poussoirs
US4409575A (en) * 1980-08-07 1983-10-11 Tokyo Shibaura Denki Kabushiki Kaisha Electromagnetic contactor
FR2525024A1 (fr) * 1982-04-10 1983-10-14 Bbc Brown Boveri & Cie Dispositif de verrouillage pour organes electriques de commutation
US4544814A (en) * 1984-01-19 1985-10-01 Eaton Corporation Mechanical interlock for contactors
US6002579A (en) * 1995-12-22 1999-12-14 Siemens Aktiengesellschaft Switchgear unit
US6140896A (en) * 2000-03-10 2000-10-31 Eaton Corporation Electro-mechanical reversing contactor with a single, common base
FR2874132A1 (fr) * 2004-08-03 2006-02-10 Infra & Sa Element de jonction pour assembler deux supports de connecteurs adjacents et ensemble de support de connecteur comprenant un tel element de jonction
EP2645390A1 (fr) * 2012-03-30 2013-10-02 Abb Ag Commutateur d'installation électrique doté d'un verrouillage mécanique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7926469U1 (de) * 1979-09-18 1979-12-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verriegelungseinrichtung für Kontaktträger

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510612A (en) * 1967-12-14 1970-05-05 Allis Chalmers Mfg Co Mechanical interlock for electrical switches or the like
US3592985A (en) * 1970-02-06 1971-07-13 Square D Co Mechanical interlock for two switches that are mounted on a common support

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510612A (en) * 1967-12-14 1970-05-05 Allis Chalmers Mfg Co Mechanical interlock for electrical switches or the like
US3592985A (en) * 1970-02-06 1971-07-13 Square D Co Mechanical interlock for two switches that are mounted on a common support

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385204A1 (fr) * 1977-03-26 1978-10-20 Bbc Brown Boveri & Cie Bloc a deux contacteurs combines
FR2454171A1 (fr) * 1979-04-13 1980-11-07 Telemecanique Electrique Dispositif de verrouillage pour deux boutons-poussoirs
FR2454653A1 (fr) * 1979-04-17 1980-11-14 Telemecanique Electrique Dispositif de verrouillage pour deux boutons-poussoirs
US4409575A (en) * 1980-08-07 1983-10-11 Tokyo Shibaura Denki Kabushiki Kaisha Electromagnetic contactor
FR2525024A1 (fr) * 1982-04-10 1983-10-14 Bbc Brown Boveri & Cie Dispositif de verrouillage pour organes electriques de commutation
US4544814A (en) * 1984-01-19 1985-10-01 Eaton Corporation Mechanical interlock for contactors
US6002579A (en) * 1995-12-22 1999-12-14 Siemens Aktiengesellschaft Switchgear unit
US6140896A (en) * 2000-03-10 2000-10-31 Eaton Corporation Electro-mechanical reversing contactor with a single, common base
FR2874132A1 (fr) * 2004-08-03 2006-02-10 Infra & Sa Element de jonction pour assembler deux supports de connecteurs adjacents et ensemble de support de connecteur comprenant un tel element de jonction
EP2645390A1 (fr) * 2012-03-30 2013-10-02 Abb Ag Commutateur d'installation électrique doté d'un verrouillage mécanique
CN103366988A (zh) * 2012-03-30 2013-10-23 Abb股份公司 带有机械锁止件的电气安装开关

Also Published As

Publication number Publication date
DK362274A (fr) 1975-03-03
SE7408832L (fr) 1975-01-20
BE817380A (fr) 1975-01-08
GB1468072A (en) 1977-03-23
IT1016445B (it) 1977-05-30
NL7409277A (nl) 1975-01-21
FR2238233B1 (fr) 1978-03-24
FR2238233A1 (fr) 1975-02-14
DE2432531A1 (de) 1975-02-06
ES428371A1 (es) 1976-08-16
NO742448L (fr) 1975-02-17
CA1008495A (en) 1977-04-12

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