US3824510A - Mechanical interlock for electric switches - Google Patents
Mechanical interlock for electric switches Download PDFInfo
- 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
Links
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 abstract description 3
- LYKJEJVAXSGWAJ-UHFFFAOYSA-N compactone Natural products CC1(C)CCCC2(C)C1CC(=O)C3(O)CC(C)(CCC23)C=C LYKJEJVAXSGWAJ-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001169 thermoplastic Polymers 0.000 abstract description 2
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001446467 Mama Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Mechanisms For Operating Contacts (AREA)
- Fuses (AREA)
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 (xx) | 1973-07-19 | 1974-07-04 | |
CA204,010A CA1008495A (en) | 1973-07-19 | 1974-07-04 | Mechanical interlock for electric switches |
DE2432531A DE2432531A1 (de) | 1973-07-19 | 1974-07-04 | Mechanische verriegelungsvorrichtung fuer elektrische schalter |
NO742448A NO742448L (xx) | 1973-07-19 | 1974-07-05 | |
DK362274A DK362274A (xx) | 1973-07-19 | 1974-07-05 | |
FR7423419A FR2238233B1 (xx) | 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 |
GB3171374A GB1468072A (en) | 1973-07-19 | 1974-07-17 | Mechanical interlock member for electric switches |
ES428371A ES428371A1 (es) | 1973-07-19 | 1974-07-17 | Un dispositivo de enclavamiento mecanico para un par de dispositivos de interrupcion. |
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 (xx) |
BE (1) | BE817380A (xx) |
CA (1) | CA1008495A (xx) |
DE (1) | DE2432531A1 (xx) |
DK (1) | DK362274A (xx) |
ES (1) | ES428371A1 (xx) |
FR (1) | FR2238233B1 (xx) |
GB (1) | GB1468072A (xx) |
IT (1) | IT1016445B (xx) |
NL (1) | NL7409277A (xx) |
NO (1) | NO742448L (xx) |
SE (1) | SE7408832L (xx) |
Cited By (10)
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 (de) * | 2012-03-30 | 2013-10-02 | Abb Ag | Elektrischer Installationsschalter mit mechanischer Verriegelung |
Families Citing this family (1)
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)
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 |
-
1973
- 1973-07-19 US US00380564A patent/US3824510A/en not_active Expired - Lifetime
-
1974
- 1974-07-04 DE DE2432531A patent/DE2432531A1/de active Pending
- 1974-07-04 SE SE7408832A patent/SE7408832L/ not_active Application Discontinuation
- 1974-07-04 CA CA204,010A patent/CA1008495A/en not_active Expired
- 1974-07-05 FR FR7423419A patent/FR2238233B1/fr not_active Expired
- 1974-07-05 DK DK362274A patent/DK362274A/da unknown
- 1974-07-05 NO NO742448A patent/NO742448L/no unknown
- 1974-07-08 BE BE146334A patent/BE817380A/xx unknown
- 1974-07-09 NL NL7409277A patent/NL7409277A/xx unknown
- 1974-07-16 IT IT52141/74A patent/IT1016445B/it active
- 1974-07-17 GB GB3171374A patent/GB1468072A/en not_active Expired
- 1974-07-17 ES ES428371A patent/ES428371A1/es not_active Expired
Patent Citations (2)
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)
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 (de) * | 2012-03-30 | 2013-10-02 | Abb Ag | Elektrischer Installationsschalter mit mechanischer Verriegelung |
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 |
---|---|
ES428371A1 (es) | 1976-08-16 |
GB1468072A (en) | 1977-03-23 |
SE7408832L (xx) | 1975-01-20 |
FR2238233B1 (xx) | 1978-03-24 |
NL7409277A (nl) | 1975-01-21 |
BE817380A (fr) | 1975-01-08 |
FR2238233A1 (xx) | 1975-02-14 |
CA1008495A (en) | 1977-04-12 |
DE2432531A1 (de) | 1975-02-06 |
IT1016445B (it) | 1977-05-30 |
DK362274A (xx) | 1975-03-03 |
NO742448L (xx) | 1975-02-17 |
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