US3688229A - Miniature electromagnetic relay - Google Patents

Miniature electromagnetic relay Download PDF

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Publication number
US3688229A
US3688229A US103070A US3688229DA US3688229A US 3688229 A US3688229 A US 3688229A US 103070 A US103070 A US 103070A US 3688229D A US3688229D A US 3688229DA US 3688229 A US3688229 A US 3688229A
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US
United States
Prior art keywords
frame
relay
common contact
contacts
contact
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
US103070A
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English (en)
Inventor
Paul Bloch
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.)
ALE International SAS
Original Assignee
La Telephone Industrielle et Commerciale Telic Alcatel SA
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Publication date
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Application granted granted Critical
Publication of US3688229A publication Critical patent/US3688229A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition

Definitions

  • the present invention relates to a miniature electromagnetic relay suitable for being mounted particularly on a map of printed circuits.
  • a relay which has small overall dimensions, is light and can be easily attached to or provided on a map of printed circuits either by plugging or soldering. It isl further required that a relay of this type be sturdy and very reliable, while having a low power consumption. Lastly, a
  • an R-T contact which comprisesL a central element called a common contact and which, in the absence of excitation or energization of the relay, bears on a fixed so-called rest" contact.
  • a common contact With the energization of the relay, due to the attraction of the magnetic circuit the common contactwill come to bear or act on another fixed contact, a socalled work contact.
  • a switch having a common contact consisting of a structure having an elongated shape, for example, a wire, rod or homogeneous resilient metallic bar.
  • This common contact has a constant cross-section over the entire length thereof, comprising in an end region or area an anchored portion having an extremity serving as a connection on one side while the other extremity is divided successively into a first zone of elastic deformation, a second zone which is integral with a magnetic armature, a third zone also providing elastic deformation, and lastly, an extremity serving as the contact portion of the common contact.
  • the aforementioned armature which is made from soft magnetic metal, is connected with the structure of the common contact by means of an insulating body.
  • the vane is placed opposite an opening in a C-shaped magnetic circuit which in operative connection with an excitation coil.
  • the contact portion of the elastic structure bears upon or is supported against the rest contact due to the e'ect of its elastic tension.
  • the attraction of the vane by the magnetic circuit results in the shifting of the common contact to the working contact.
  • the elasticity of the structure resets or returns the common contact to the rest contact.
  • lt is an object of the present invention to provide a relay which eliminates or otherwise avoids the disadvantages inherent in known devices of a similar type.
  • FIG. 1 illustrates schematically the basicelements of the present invention
  • FIG. 2 is a side sectional view of one embodiment of the relay proposed by the present invention.
  • FIG. 3 is a sectional view taken along line lI-II of FIG. 2;
  • FIG. 4 is an exploded perspective view of a portion of the disclosed relay.
  • a resilient elongated metallic structure A forms a common contact cross-section and the following operative zones: a, a first extremity serving as a connection portion for contact with an exterior circuit (not shown); b, an anchoring zone wherein the contact is supported by an insulating piece 28; c, a first zone of elastic deformation; d, a zone which is connected with a armature 18 made from soft magnetic material by means of an insulating body 20; e, a second zone of elastic deformation; and f, a second extremity serving as the contact portion of the common contact.
  • the two fixed contacts have been designated, respectively, withreference symbols g (rest contact) and h (working contact).
  • the metallic vane 18 is placed adjacent the opening of a C-shaped magnetic circuit of which only the branches 14 and 16 have been shown in FIG. l. As is well known in the art, thebranches 14 and 18 close on a yoke and the magnetic circuit may be ⁇ subjected to the field of an induction coil (which have not been shown in FIG. l
  • the relay is mounted in a casing 2, made for example,from hard plastic material, and comprising a tube 4 having a rectangular cross-section, having at the ends thereof flanges 6 and 8 being disposed at the respective ends thereof. Placed around the tube 4 between the flanges 6 and 8 is a winding 10 of an enameled copper wire for example.
  • a magnetic circuit comprises a yoke l2 forming a bridge between the edges of the flanges 6 and 8 on one side of the casing 2, a lower L-shaped branch 14 covering the portion of the flange 6 adjacent the yoke 12 and extending inside of the tube 4 through the bottom, an upper L-shaped branch 16 covering the portion of the flange 8 adjacent the yoke 12 and extending into the tube 4 from above.
  • the yoke 12 engages in channels in the flanges 6 and 8, as is apparent from FIG. 3.
  • this magnetic circuit will consist of at least two parts which may be assembled, for
  • the magnetic circuit elements 12, ⁇ 14, and 16 consist advantageously of an alloy such as Anhyster or the like.
  • armature 18 Adjacent the opening between the branches 14 and 16 of the magnetic circuit is a armature 18 made from a magnetic alloy which is connected, by means of a small insulating block 20, with a group of pairs of parallel wires 22 made of a resilient conductive alloy. A certain portion of these pairs of wires 22 is embedded or anchored in an insulating support 24 consisting, for example, of an organic polymer of the polyamide type or group, or the like.
  • the insulating support 24 comprises an elongated block 26 which occupies the entire length of the tube 4 on the side opposite the magnetic circuit, and a short block 28 which serves to retain the lower branch 14 of the magnetic circuit and the pairs-of wires 22.
  • These two blocks 26 and 28 may be interconnected by any known means, such as gluing, screwing, or merely the forcible engagement in the tube 4.
  • the tow parallel wires 22 of each pair constitute or make up the contact structure having the elongated form A as described in connection with FIG. l.
  • the lower portion of the wires 22 passing or extending below the flange serves for the exterior connections to the relay, such as a sleeve (zone a in FIG. 1), and above this portion is the anchoring zone b.
  • the central portion is connected with the magnetic annature 18 (zone d) by means ofthe insulting block 20.
  • the zone of elastic deformation c Situated between the block and the anchoring zone.
  • Above the block 20 is a second zone of elastic deformation e, and the extreme end por tion of the wires 22 constitutes the contact portion of the common contact (zone f).
  • the fixed (rest-work) contacts are advantageously connected to or formed of two conductors 30 and 32 embedded in the body of the block 26 with the exclusion of the lower portion which passes below the flange 6 and of the upper portion which has a contact surface to the right of the upper end of the common contacts 22. It is particularly advantageous to employ as conductors 30 and 32 wires that are identical to the wires 22. In the preferred case, the upper end of the wires 30 and 32 is bent back first into the vertical plane and second into the horizontal plane, as is apparent from FIG. 2. The different rest-work contacts of the same relay are separated from each other by means of connecting pieces or sleeves, such as projections 34 in the block 26.
  • a lid 36 which is transparent and forms a magnifying glass.
  • This lid is forcibly secured within the tube 4 by means of legs 38 and 40 shown in cross-section in FIG. 3.
  • This lid may consist of methyl methacrylate or the like.
  • the magnifying glass renders it possible to clearly see the contact zones of the fixed and movable conductors, whereby the good operation of the relay is assured.
  • the wires 22 are advantageously made of a eutectic alloy of silver and copper in a weight ratio of about work contacts, but it is understood that this number of I contacts has been indicated solely by way of example and is not intended to be limitative in any way. It is quite Y possible to either increase or decrease the number disclosed herein by increasing the size of the casing.
  • the magnetic' circuit does not require an opening, nor machining of any kind.
  • FIG. 4 shows an exploded view of the group of elements consisting of the common and fixed contacts of the relay according to the present invention. Also evident from this figure are the four pairs of wires 22 held in position by the block 20, which is made from insulating material and which is turn supports the magnetic armature 18.
  • the support 26 contains four pairs of wires 30 and 32 whose ends project or extend on one side from the support, the other ends of which are bent back twice in the manner already described. Projections 34 hold the upper ends of the wires 30-32 and separate the contacts of the relay from each other.
  • a miniature electromagnetic relay comprising a plurality of fixed rest contacts andwork contacts, an elongated frame of insulating material having a rectangular cross-section on which there is wound at least one winding, a C-shaped magnetic circuit surrounding said winding on one side of said rectangular frame and having a gap disposed inside of said frame, at least one common elastically flexible wire contact having an elongated shape and constant cross-section, support means for supporting one end of said common contact in cantilever fashion inside said frame adjacent one end of said frame with said one end of said common contact extending out of said frame as a connection portion, a magnetic armature insulatingly secured solely to said common contact at a point substantially midway between said support means and the other free end of i said common contact inside said frame, said magnetic armature being disposed adjacent the gap in said magnetic circuit and the other free end of said common contact being disposed between at least one rest contact and one work contact.
  • a relay as defined in claim 2, wherein the wires forming said common contact are made from a silvercopper alloy in a weight ratio of about 72/28.
  • each of said common contacts is provided in the form of a pair of parallel wires.
  • wires forming said common contact are made from a silvercopper alloy in a weight ratio of about 72/28.
  • a relay as defined in claim 8 wherein said xed rest contacts and said fixed work contacts each are formed by a wire extending substantially parallel to said common contact on the same-side thereof and having a double bend at the end thereof adjacent the free end of said common contact inside said frame, while the other end thereof extends out of said frame 10.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Package Frames And Binding Bands (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Relay Circuits (AREA)
US103070A 1969-12-31 1970-12-31 Miniature electromagnetic relay Expired - Lifetime US3688229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6945735A FR2071519A5 (enrdf_load_stackoverflow) 1969-12-31 1969-12-31

Publications (1)

Publication Number Publication Date
US3688229A true US3688229A (en) 1972-08-29

Family

ID=9045501

Family Applications (1)

Application Number Title Priority Date Filing Date
US103070A Expired - Lifetime US3688229A (en) 1969-12-31 1970-12-31 Miniature electromagnetic relay

Country Status (17)

Country Link
US (1) US3688229A (enrdf_load_stackoverflow)
JP (1) JPS4832858B1 (enrdf_load_stackoverflow)
AT (1) AT305387B (enrdf_load_stackoverflow)
BE (1) BE760590A (enrdf_load_stackoverflow)
CA (1) CA918205A (enrdf_load_stackoverflow)
CH (1) CH517374A (enrdf_load_stackoverflow)
DE (1) DE2064226C3 (enrdf_load_stackoverflow)
ES (1) ES194681Y (enrdf_load_stackoverflow)
FR (1) FR2071519A5 (enrdf_load_stackoverflow)
GB (1) GB1269190A (enrdf_load_stackoverflow)
LU (1) LU62338A1 (enrdf_load_stackoverflow)
NL (1) NL7018934A (enrdf_load_stackoverflow)
PL (1) PL69862B1 (enrdf_load_stackoverflow)
RO (1) RO57171A (enrdf_load_stackoverflow)
SE (1) SE361976B (enrdf_load_stackoverflow)
SU (1) SU434668A3 (enrdf_load_stackoverflow)
YU (1) YU33548B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292613A (en) * 1978-09-08 1981-09-29 Omron Tateisi Electronics Co. Flat-shaped electromagnetic relay having multiple contacts
US4472699A (en) * 1981-07-20 1984-09-18 Takamisawa Electric Co., Ltd. Electromagnetic relay
US4482876A (en) * 1982-03-23 1984-11-13 Siemens Aktiengesellschaft Electromagnetic relay
EP0167131A3 (en) * 1984-06-30 1986-10-08 Omron Tateisi Electronics Co. Electromagnetic relay
US4689587A (en) * 1985-05-22 1987-08-25 Siemens Aktiengesellschaft Electromagnetic relay
US4703295A (en) * 1981-07-20 1987-10-27 Takamisawa Electric Co., Ltd. Electromagnetic relay having precise positional relationship between elements

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633734C2 (de) * 1976-07-27 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Miniaturrelais
CH614068A5 (en) * 1977-03-30 1979-10-31 Standard Telephon & Radio Ag Electromagnetic relay

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608630A (en) * 1948-01-07 1952-08-26 Bell Telephone Labor Inc Relay
US2662135A (en) * 1948-07-28 1953-12-08 Autocall Company Plug-in relay
US3138678A (en) * 1962-02-05 1964-06-23 Littelfuse Inc Automatically calibrated electromagnetic relay
US3333216A (en) * 1965-10-21 1967-07-25 Automatic Elect Lab Unencapsulated reed contact relay
US3544930A (en) * 1968-02-29 1970-12-01 Matsushita Electric Works Ltd Electromagnetic multicontact relay

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608630A (en) * 1948-01-07 1952-08-26 Bell Telephone Labor Inc Relay
US2662135A (en) * 1948-07-28 1953-12-08 Autocall Company Plug-in relay
US3138678A (en) * 1962-02-05 1964-06-23 Littelfuse Inc Automatically calibrated electromagnetic relay
US3333216A (en) * 1965-10-21 1967-07-25 Automatic Elect Lab Unencapsulated reed contact relay
US3544930A (en) * 1968-02-29 1970-12-01 Matsushita Electric Works Ltd Electromagnetic multicontact relay

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292613A (en) * 1978-09-08 1981-09-29 Omron Tateisi Electronics Co. Flat-shaped electromagnetic relay having multiple contacts
US4472699A (en) * 1981-07-20 1984-09-18 Takamisawa Electric Co., Ltd. Electromagnetic relay
US4703295A (en) * 1981-07-20 1987-10-27 Takamisawa Electric Co., Ltd. Electromagnetic relay having precise positional relationship between elements
US4482876A (en) * 1982-03-23 1984-11-13 Siemens Aktiengesellschaft Electromagnetic relay
EP0167131A3 (en) * 1984-06-30 1986-10-08 Omron Tateisi Electronics Co. Electromagnetic relay
US4689587A (en) * 1985-05-22 1987-08-25 Siemens Aktiengesellschaft Electromagnetic relay

Also Published As

Publication number Publication date
ES194681U (es) 1975-01-01
DE2064226B2 (de) 1978-07-27
CA918205A (en) 1973-01-02
NL7018934A (enrdf_load_stackoverflow) 1971-07-02
SE361976B (enrdf_load_stackoverflow) 1973-11-19
PL69862B1 (en) 1973-10-31
DE2064226A1 (de) 1971-07-08
RO57171A (enrdf_load_stackoverflow) 1974-11-11
GB1269190A (en) 1972-04-06
JPS4832858B1 (enrdf_load_stackoverflow) 1973-10-09
DE2064226C3 (de) 1980-04-03
BE760590A (fr) 1971-06-21
AT305387B (de) 1973-02-26
YU33548B (en) 1977-06-30
LU62338A1 (enrdf_load_stackoverflow) 1971-08-13
YU319170A (en) 1976-12-31
FR2071519A5 (enrdf_load_stackoverflow) 1971-09-17
CH517374A (fr) 1971-12-31
ES194681Y (es) 1975-05-01
SU434668A3 (ru) 1974-06-30

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