US3671891A - Small type electromagnetic contactor - Google Patents

Small type electromagnetic contactor Download PDF

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Publication number
US3671891A
US3671891A US175833A US3671891DA US3671891A US 3671891 A US3671891 A US 3671891A US 175833 A US175833 A US 175833A US 3671891D A US3671891D A US 3671891DA US 3671891 A US3671891 A US 3671891A
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US
United States
Prior art keywords
case
plunger
turning frame
actuating rod
disposed
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
US175833A
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English (en)
Inventor
Yushito Usui
Kenji Shiojima
Toshikatsu Hatakeyama
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Application granted granted Critical
Publication of US3671891A publication Critical patent/US3671891A/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
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil

Definitions

  • ABSTRACT A small type electromagnetic contactor wherein a turning Aug. 3 l 1970 Japan ..45/7697l frame is rotatably bridged between a pair of opposing slots in a case having a build-in electromagnetic device, and actuating US. Cl 335/ 126, 335/132 arm of an actuating rod member slidably mounted in an upper Int- Clcase member is disposed to be in ontact with said turning Field of Search ..335/l06, 126, 131, 132, 202, fr
  • the turning frame is rotatably bridged between a pair of opposing internal slots in the case, the head of the plunger is brought into contact with one side of the turning frame, and an extruded stub member disposed on the actuating rod for opening and closing the contacts is brought into engagement with the other side of the turning frame.
  • a principal object of the present invention is to provide an electromagnetic contactor in which the mechanical coupling between the plunger, turning frame and actuating rod is eliminated and thus the assembly of the same is easy.
  • Another object of this invention is to provide an electromagnetic contactor in which the contacts contained in the upper member can'be easily replaced.
  • FIG. 1 is a sectional view showing an electromagnetic contactor embodying this invention
  • FIG. 2 is a perspective view showing the structure of the upper member with an actuating rod disassembled
  • FIG. 3 is a perspective view showing the turning frame
  • FIG. 4 is a perspective view showing the electromagnetic deviceand lower case member disassembled.
  • the reference A denotes an upper case member, in which fixed contacts, an actuating rod equipped with movable contacts, and a coil spring for biasing the actuating rod.
  • the reference B denotes the main body, in which an electromagnetic device comprising a plunger, a yoke and a coil, a cushion member for absorbing any mechanical shocks produced in the electromagnetic device, and a turning frame which is rotated by the movement of said plunger.
  • the contactor is assembled by placing the upper member A on the body B through an insulative plate 31.
  • FIG. 2 shows the upper member, wherein 1 is a case made of an insulating material, 2 is a plurality of fixed contacts, and 3 is a corresponding number of fixed plates having the fixed contacts 2.
  • the fixed contacts 2 and fixed plates 3 are secured integral to said case 1.
  • the internal space of said case 1 is divided into several numbers of small chambers 5 by a plurality of partition walls 4 and 4' projected from longitudinal both side walls toward the center.
  • the fixed plates 3 are respectively secured to each of two mutually opposite sides in the chamber 5. These plates 3 are projected out of the case 1 to serve as terminals.
  • As open path 6 is formed at the center of the partitions 4 and 4', and an actuating rod 7 is slidably disposed in the path 6.
  • 30 is a lug disposed on each edge of an opening of the insulative case I.
  • Said actuating rod 7 is made of a synthetic resin, one end of which has an actuating arm 8 projected sideways.
  • a recess 9 in which a coil spring 10 is inserted is provided at an end of the rod at the side where the actuating arm 8 is installed, and laterally opened windows 11 are provided in the rod body.
  • a movable contact plate 12 is inserted into each of the windows 11.
  • a movable contact 13 is disposed at each end of said movable contact plate 12.
  • 14 is a coil spring contained in each window 11, by which spring the movable plate 12 is biased.
  • the actuating rod 7 thus equipped with the movable contact plates is slidably mounted in the open path 6 inside the case of the upper member so that the respective movable contacts will oppose to the respective fixed contacts.
  • FIG. 3 shows the turning frame 15, wherein mutually parallel arms 17 and 17' are provided as projected from both ends of main body 16, pivoting shafts 18 and 18 are disposed outside the arms 17 and 17', and hook members 19 and 19' are provided to further extend from the ends of the arms 17 and 17'.
  • FIG. 4 shows the main body of the contactor, wherein a vertical slot 21 is disposed inside each of opposing side walls of a case 20 which is made of an insulating material. An arcuate recess 22 is formed at each bottom end of said slots 21. Another pair of vertical slots 23 is disposed on the walls at opposite side to the slot 22.
  • the reference 24 denotes an electromagnetic device, in which 25 is a yoke, 26 is a plunger, 27 is a connecting pin inserted through the head of the plunger, 28 is a coil, and 29 is a cushion member made of an elastic material such as rubber mounted to each side edge of the yoke.
  • the electromagnetic device 24 having the cusion members 29 and the plunger 27 is inserted into the case 20 from its open side.
  • the turning frame 15 is housed in the case, and the pivoting shafts 18 and 18' of the frame are slidably set in the recesses 22.
  • the hook members 19 and 19 of arms 17 and 17' of the turning frame 15 are brought into contact with the connecting pin 27 of the plunger 26.
  • the upper member A is placed on the case 20.
  • the operating arm 8 of the actuating rod 7 is brought into contact with the left shoulder part of the main body 16 as shown in FIG. 1.
  • the respective lugs 30 of the upper case 1 are fitted in the respective slots 21 so as to secure the shafts 18 of the frame 15 in position.
  • FIG. 1 shows the state where the plunger 26 is not attracted and the fixed contacts 2 are away of the movable contacts 13, namely in the OFF state.
  • the plunger 26 is attracted and moved in the direction of X
  • the turning frame 15 is rotated about the shafts l8, and the actuating arm 8 of the actuating rod 7 is moved toward the direction of Y as urged by the main body 16 of the frame 15.
  • the movable contact plates 13 are moved in the Y-direction and brought into contact with the fixed contacts 2 to establish the ON state.
  • the electromagnetic contactor is divided chiefly into two parts of the upper member section equipped with the electric contacts opened and closed by the actuating rod, and the main body section in which the electromagnetic device comprising a yoke, a coil and a plunger is contained, and the arrangement is such that, in order to transmit the actuating force produced when the plunger is attracted to said operating rod, only such a single member as the turning frame is inserted in the open slots in the main body section and, thereby, the plunger in said section and the actuating rod in the upper section are operatively coupled.
  • the material of the tuming frame is not limited to any.
  • the turning frame is made of a magnetic material, the frame will effectively serve to reduce the magnetic loss between the yoke and plunger as a part of the electromagnetic device, depending on the shape of the frame.
  • a small type electromagnetic contactor comprising an upper member which comprises a case opened at one side, a plurality of fixed contacts secured integral to said case, an actuating rod having a plurality of movable contacts respectively arranged to face each said fixed contact, said actuating rod being disposed slidably along a path in the case at said opened side and provided with an actuating arm projected at an end and outside the case, and a means for biasing said actuating rod in opening direction of the contacts; and
  • a main body member which comprises a case opened at one side, an electromagnetic device contained in said case, a plunger slidably mounted in said electromagnetic device, said plunger being extended at a head out of the device, a connecting pin provided at said head of the plunger, and a turning frame having a shoulder part and a hooking part and pivotably mounted in an open slot disposed inside the case, said hooking part being engaged with said connecting pin of the plunger;
  • said upper member being superposed on the open side of the case of said main body so that the actuating arm of the actuating rod will engage said shoulder part of said turning frame, whereby an energization of the electromagnetic device will cause the turning frame to be pivotally turned by the connecting pin of the plunger attracted so as to urge the actuating arm of the actuating rod with the shoulder part of the frame in closing direction of the contacts.
  • said turning frame comprises mutually parallel arms disposed on both sides of a main body, pivoting shafts disposed outside said arms, and hook members disposed at the ends of said arms.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electromagnets (AREA)
US175833A 1970-08-31 1971-08-30 Small type electromagnetic contactor Expired - Lifetime US3671891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45076971A JPS4926773B1 (el) 1970-08-31 1970-08-31

Publications (1)

Publication Number Publication Date
US3671891A true US3671891A (en) 1972-06-20

Family

ID=13620656

Family Applications (1)

Application Number Title Priority Date Filing Date
US175833A Expired - Lifetime US3671891A (en) 1970-08-31 1971-08-30 Small type electromagnetic contactor

Country Status (3)

Country Link
US (1) US3671891A (el)
JP (1) JPS4926773B1 (el)
DE (1) DE2143488C3 (el)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828286A (en) * 1973-07-05 1974-08-06 Datron Syst Inc Miniature relay
US4031493A (en) * 1975-12-12 1977-06-21 Bell Telephone Laboratories, Incorporated Miniature low profile relay
US4101856A (en) * 1976-04-07 1978-07-18 Fritz Kolle Electrical switching relay construction and housing therefor
FR2556497A1 (fr) * 1983-11-28 1985-06-14 Sprecher & Schuh Ag Commutateur electromagnetique
US4578659A (en) * 1983-11-28 1986-03-25 Sprecher & Schuh Ag Coupling system between an electromagnetic switch apparatus and an auxiliary contact block releasably mounted thereupon
GB2233824A (en) * 1989-07-06 1991-01-16 B & R Electrical Plc A solenoid actuated relay
US5059930A (en) * 1989-03-29 1991-10-22 Mitsubishi Denki Kabushiki Kaisha Electromagnetic contactor and fabrication method therefor
US5075660A (en) * 1989-03-24 1991-12-24 Mitsubishi Denki Kabushiki Kaisha Electromagnetic contractor and fabrication method therefor
US5500630A (en) * 1994-10-13 1996-03-19 Square D Company Solid state overload relay mechanism
US5546062A (en) * 1993-07-12 1996-08-13 Schneider Electric Sa Protection switch
US6899118B1 (en) 2000-08-31 2005-05-31 Emerson Electric Co. Single coil two operator controller
US20070241847A1 (en) * 2005-03-28 2007-10-18 Ritsu Yamamoto Contact Device
US20120056701A1 (en) * 2009-08-20 2012-03-08 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contact device
US20120133462A1 (en) * 2009-08-20 2012-05-31 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contactor
US20120139673A1 (en) * 2009-08-20 2012-06-07 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contact device
US20140043116A1 (en) * 2012-08-08 2014-02-13 Tatung Company Switch Linkage Mechanism and Large Current Breaker Switch Using The Same
US20160126042A1 (en) * 2014-10-31 2016-05-05 Lsis Co., Ltd. Crossbar structure of electromagnetic contactor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116620C2 (de) * 1981-04-27 1985-04-04 Leonid Petrovič Doneck Abara Verbraucherschalteinrichtung
EP0078324B1 (de) * 1981-04-30 1987-08-12 Matsushita Electric Works, Ltd. Polarisiertes elektromagnetisches relais
DE3138265C2 (de) * 1981-09-25 1986-10-16 Sds-Elektro Gmbh, 8024 Deisenhofen Elekromagnetisches Schaltgerät
DE3146739C2 (de) * 1981-11-25 1985-10-24 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Schaltgerät
DE3230564C2 (de) * 1982-08-17 1986-12-18 Sds-Elektro Gmbh, 8024 Deisenhofen Elektromagnetisches Schaltgerät, bestehend aus einem Magnetantrieb und einem oberhalb dessen angeordneten Kontaktapparat
DE3246285A1 (de) * 1982-12-14 1984-06-14 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches relais
DE8437662U1 (de) * 1984-12-21 1985-04-04 Siemens AG, 1000 Berlin und 8000 München Elektrisches Schaltgerät
JPH02250229A (ja) * 1989-03-24 1990-10-08 Mitsubishi Electric Corp 電磁接触器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794882A (en) * 1945-03-21 1957-06-04 Cutler Hammer Inc Electric switch operating structure
US3054872A (en) * 1958-11-28 1962-09-18 Ward Leonard Electric Co Electrical contactor
US3465270A (en) * 1967-07-06 1969-09-02 Pollak Corp Joseph Heavy duty relay with wiping contacts
US3509501A (en) * 1966-10-17 1970-04-28 Pirelli Time delay mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794882A (en) * 1945-03-21 1957-06-04 Cutler Hammer Inc Electric switch operating structure
US3054872A (en) * 1958-11-28 1962-09-18 Ward Leonard Electric Co Electrical contactor
US3509501A (en) * 1966-10-17 1970-04-28 Pirelli Time delay mechanism
US3465270A (en) * 1967-07-06 1969-09-02 Pollak Corp Joseph Heavy duty relay with wiping contacts

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3828286A (en) * 1973-07-05 1974-08-06 Datron Syst Inc Miniature relay
US4031493A (en) * 1975-12-12 1977-06-21 Bell Telephone Laboratories, Incorporated Miniature low profile relay
US4101856A (en) * 1976-04-07 1978-07-18 Fritz Kolle Electrical switching relay construction and housing therefor
FR2556497A1 (fr) * 1983-11-28 1985-06-14 Sprecher & Schuh Ag Commutateur electromagnetique
US4578659A (en) * 1983-11-28 1986-03-25 Sprecher & Schuh Ag Coupling system between an electromagnetic switch apparatus and an auxiliary contact block releasably mounted thereupon
US5075660A (en) * 1989-03-24 1991-12-24 Mitsubishi Denki Kabushiki Kaisha Electromagnetic contractor and fabrication method therefor
US5059930A (en) * 1989-03-29 1991-10-22 Mitsubishi Denki Kabushiki Kaisha Electromagnetic contactor and fabrication method therefor
GB2233824A (en) * 1989-07-06 1991-01-16 B & R Electrical Plc A solenoid actuated relay
GB2233824B (en) * 1989-07-06 1993-12-22 B & R Electrical Plc Design of a solenoid actuated relay
US5546062A (en) * 1993-07-12 1996-08-13 Schneider Electric Sa Protection switch
US5500630A (en) * 1994-10-13 1996-03-19 Square D Company Solid state overload relay mechanism
US6899118B1 (en) 2000-08-31 2005-05-31 Emerson Electric Co. Single coil two operator controller
US20070241847A1 (en) * 2005-03-28 2007-10-18 Ritsu Yamamoto Contact Device
US7859373B2 (en) * 2005-03-28 2010-12-28 Panasonic Electric Works Co., Ltd. Contact device
US20120139673A1 (en) * 2009-08-20 2012-06-07 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contact device
US20120133462A1 (en) * 2009-08-20 2012-05-31 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contactor
US20120056701A1 (en) * 2009-08-20 2012-03-08 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contact device
US8274346B2 (en) * 2009-08-20 2012-09-25 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contact device
US8289111B2 (en) * 2009-08-20 2012-10-16 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contactor
US8324993B2 (en) * 2009-08-20 2012-12-04 Fuji Electric Fa Components & Systems Co., Ltd. Electromagnetic contact device
US20140043116A1 (en) * 2012-08-08 2014-02-13 Tatung Company Switch Linkage Mechanism and Large Current Breaker Switch Using The Same
US20160126042A1 (en) * 2014-10-31 2016-05-05 Lsis Co., Ltd. Crossbar structure of electromagnetic contactor
US9646790B2 (en) * 2014-10-31 2017-05-09 Lsis Co., Ltd. Crossbar structure of electromagnetic contactor

Also Published As

Publication number Publication date
DE2143488B2 (de) 1974-07-04
DE2143488A1 (de) 1972-05-25
DE2143488C3 (de) 1975-02-20
JPS4926773B1 (el) 1974-07-11

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