US2831939A - Electromechanical relay - Google Patents

Electromechanical relay Download PDF

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Publication number
US2831939A
US2831939A US497257A US49725755A US2831939A US 2831939 A US2831939 A US 2831939A US 497257 A US497257 A US 497257A US 49725755 A US49725755 A US 49725755A US 2831939 A US2831939 A US 2831939A
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US
United States
Prior art keywords
relay
contact
armature
springs
blades
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
US497257A
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English (en)
Inventor
Alizon Etienne
Vazquez Charles
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.)
Compagnie Industrielle des Telephones SA
Original Assignee
Compagnie Industrielle des Telephones SA
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 Compagnie Industrielle des Telephones SA filed Critical Compagnie Industrielle des Telephones SA
Application granted granted Critical
Publication of US2831939A publication Critical patent/US2831939A/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
    • 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

Definitions

  • the electromechanical relays used in telephone or telegraph exchanges comprise an electro-magnetic motor made up of a fixedmagnetic circuit, one or more coils and one or more movable armatures, and associated with one or more stacks of contact springs on which the relay armatures act.
  • the contact springs are parallel with the largest dimension of the motor, generally the axis of the coil, and placed in such a manner that the front area of the relay is the sum of the apparent area of the motor and that of the stack.
  • the small spacing of the springs and the fragility of the tail pieces for soldering render difficult the wiring on the relay and render impossible the connection of the relay by plugging into a support due to the small size of the flexible contacts with which said support'has to be provided.
  • the adjustment of the contact springs is made difiicult by the small spacing between springs.
  • the efiiciency of the magnetic circuit is largely decreased, which involves increased working powers and'prohibitive heatings of'the coil wires.
  • the purpose of the present invention is to obviate these drawbacks.
  • connection tail pieces can be distributed in a regular manner over the entire available frontal area of the relay.
  • the dimensions of these connection tail pieces, their thickness in particular, may be such that they offer the required mechanical rigidity for allowing an easy wiring or a direct plugging in on a support.
  • the contact springs arranged in line with the connection tail pieces on the other side of the stacks are thus suflicientlyspaced for their adjustment to be carried out easily.
  • the fixed portion of the magnetic circuit or frame of the relay comprises a portion cambered in the plane of symmetry of the relay, acting as a core for the operating winding.
  • the magnetic circuit of the relay comprises another cambered portion, bent in a plane perpendicular to that of the frame and which is used for the articulation of the relay armature.
  • the function of the relay motor is to keep open, according to the working or rest condition, one or the other group of these socalled rest or work contacts re tive example, one embodiment of a relay according to the invention.
  • Figure 1 shows a view of the relay, in elevation.
  • Figure 2 is a view of the relay seen from underneath, in Figure l.
  • Figure 3 is a perspective view, on an enlarged scale of the relay of Figure 1
  • Figure 4 is an end view of the relay of Figure I seen from the side of the connection tail pieces, and
  • Figure 5 is an end view of the relay of Figure 1, as seen from the motor side. 1
  • the relay comprises a frame 1, made of mild steel, offering at one end a cambered portion 2 and, in the axial plane of the relay, a cambered lug 3 serving as a core for the coil 4, the latter being formed .by a moulded material supporting the winding.
  • the movable armature comprises a soft iron plate 6 and a stack controlling plate 11, made of insulating inoulded material forced over the arms'12 of the plate 6.
  • the plate 6 Onthe other side of the plate 11, the plate 6 carries twocambered lugs 7 allowing its articulation on a non-mag-' netic metal plate 8 comprising two wings 9 for holding the plate 8 and secured on theframe 1 by a screw 10 screwing into a tapped hole in the cambered portion 2 of frame 1.
  • the motion of the armature 6 is limited, when the relay operates, to the abutment thereof against the core 3 and, when the relay is at rest, by a U-shaped stop 13 secured on the frame 1 by one of its legs by means of an eyelet 14, the other one of its legs coming into contact with the central portion of the plate 11.
  • the stop 13 enters a notch of the flange and is provided with two catches which rest against the edges of the notch, thus locking the winding 4 on the core 3.
  • FIG. 1 and 5 The construction and arrangement of the stack will be described more especially in connection with Figures 1 and 5, on which the stack may be seen to consist of four blocks 16, 17, 18 and 19 of moulded insulating material, each one of them holding or enclosing three blades of a good conducting metal such as German silver.
  • These blocks 16, 17, 18 and 19 are stacked on top of one an other and are secured firmly to the frame It by tubular eyelets 2% or any other suitable means.
  • the portion of each of the blades outside the relay serves as a connection tail piece, either for soldering or for plugging in, the distribution of the connection tail pieces over the entirety of the front area of the relay thereby facilitating these connections.
  • the blades of the block 16 are used for receiving the outer ends of the windings of the coils not shown in the drawing.
  • the blades of the block 18, such as 22 are extended inwards with respect to the relay and are provided, at their inner ends, with two precious metal contact wafers opposite the wafers on springs such. as 21.
  • the block 19 is made of a material similar to that of the block 17 and comprises contact springs such as 23.
  • a return spring 24, made of phosphor bronze is caught under the attachment eyelets 20 and acts against the ends of the arms 12 of the plate.
  • the contact springs such as 21 and 23 are so cambered that, if the plate 11 is assumed to be removed, they both apply their contact wafers, against those of the corresponding blade 22 with a predetermined force.
  • the shape of the plate 11 is such that when the relay coil is not energized, the armature 6 is brought back against its rest stop under the action of the spring 24 which is suflicient for moving the springs 23 away from the corresponding blades 22.
  • the springs 21 then rest on the blades 22 and close the rest contacts of the relay' The blades 22, which are very rigid, do not undergo any appreciable displacement under the action of the springs 21.
  • the relay coil When the relay coil is energized, the electromagnetic force attracts the armature 6, whereupon the plate 11 releases the springs 23 which, owing to their own camber come to press against the blades 22 and close the make contacts of the relay.
  • the tapped hole 25 provided in the frame 1 is intended for receiving a screw for attaching the relay.
  • An electromagnetic relay comprising a magnetic circuit formed by a frame provided at one end thereof with a bent portion and with an essentially rectilinear portion, a movable armature supported at one side thereof by said bent end portion of the frame to enable articulate movement of said armature about an axis adjacent said one side, a stack of contact springs having free ends and disposed essentially parallel to said rectilinear portion and directed toward said bent portion of the frame, a magnetic core with at least one winding thereon with the axis thereof essentially perpendicular to said rectilinear portion and disposed between said bent portion and the free ends of said contact springs, the other side of said armature opposite said one side adjacent said articulation axis being provided with a central recess thereby leaving on both sides thereof narrow armature portions, an essentially flat return spring disposed above said contact springs and secured to said stack, said contact springs consisting of a plurality of groups of contact springs disposed alongside one another, an insulating stack controlling plate for the mov
  • said stack of contact springs comprises one relatively fixed blade disposed between two movable blades and supported by block means of molded material, said two movable blades each having a camber of such shape as to normally tend to apply themselves against said fixed center blade, each of said movable blades being formed in two parts, one part thereof forming the connecting piece and held by the molded material of said block means and the other part forming a contact spring secured to said first part, the contact springs being essentially flat over the entire length thereof.
  • An electromagnetic relay comprising a magnetic circuit formed by a frame provided at one end thereof with a bent portion and with an essentially rectilinear portion, a movable armature supported at oneside thereof by said bent end portion of the frame to enable articulate movement of said armature about an axis adjacent said one side, a staclt of contact springs having free ends and disposed essentially parallel to said rectilinear portion and directed toward said bent portion of the frame, a magnetic core with at least one winding thereon with the axis thereof essentially perpendicular to said rectilinear portion and disposed between said bent portion and the free ends of said contact springs, the other side of said armature opposite said one side adjacent said articulation axis being provided with a central recess thereby leaving on both sides thereof narrow armature portions, an essentially fiat return spring disposed above said contact springs a 5 and secured to said stack, said contact springs consisting of a plurality of groups of contact springs disposed alongside one another, an insulating
  • contact springs being essentially flat over the entire length thereof.
US497257A 1954-04-07 1955-03-28 Electromechanical relay Expired - Lifetime US2831939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR958137X 1954-04-07

Publications (1)

Publication Number Publication Date
US2831939A true US2831939A (en) 1958-04-22

Family

ID=9487778

Family Applications (1)

Application Number Title Priority Date Filing Date
US497257A Expired - Lifetime US2831939A (en) 1954-04-07 1955-03-28 Electromechanical relay

Country Status (6)

Country Link
US (1) US2831939A (de)
CH (1) CH328278A (de)
DE (1) DE958137C (de)
FR (1) FR1105483A (de)
GB (1) GB774832A (de)
NL (2) NL188288B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905788A (en) * 1957-03-14 1959-09-22 Potter & Blomfield Inc Contact structures for relays
US3012117A (en) * 1957-02-28 1961-12-05 Bernier Raymond Mounting for the fixed contacts and the terminals of an electromagnetic relay
US3165607A (en) * 1961-08-11 1965-01-12 Ibm Armature for electro-magnetic relay
US3622729A (en) * 1969-07-25 1971-11-23 Nippon Gakki Seizo Hamamatsu S Key switch device for electronic musical instruments
US3657673A (en) * 1968-09-13 1972-04-18 Int Standard Electric Corp Contact spring arrangement for electro-magnetic multi-contact relays
US3702981A (en) * 1970-07-31 1972-11-14 Klaus Dieter Wahnschaffe Electromagnetic relay
US4027131A (en) * 1974-09-13 1977-05-31 Siemens Aktiengesellschaft Spring contact assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815947A (en) * 1929-05-14 1931-07-28 Union Switch & Signal Co Electrical relay
US1981259A (en) * 1932-02-12 1934-11-20 Ohio Electric Mfg Company Motor control system
US2355047A (en) * 1942-02-24 1944-08-08 Lynch Corp Nonlinear modulating system
US2369616A (en) * 1941-07-09 1945-02-13 Bell Telephone Labor Inc Contacting device
CH267799A (fr) * 1944-02-04 1950-04-15 Comp Generale Electricite Relais de petites dimensions, notamment pour téléphonie.
US2524874A (en) * 1947-07-24 1950-10-10 Signal Engineering & Mfg Co Electromagnetic relay construction
US2591684A (en) * 1948-12-23 1952-04-08 Int Standard Electric Corp Electrical contact

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815947A (en) * 1929-05-14 1931-07-28 Union Switch & Signal Co Electrical relay
US1981259A (en) * 1932-02-12 1934-11-20 Ohio Electric Mfg Company Motor control system
US2369616A (en) * 1941-07-09 1945-02-13 Bell Telephone Labor Inc Contacting device
US2355047A (en) * 1942-02-24 1944-08-08 Lynch Corp Nonlinear modulating system
CH267799A (fr) * 1944-02-04 1950-04-15 Comp Generale Electricite Relais de petites dimensions, notamment pour téléphonie.
US2524874A (en) * 1947-07-24 1950-10-10 Signal Engineering & Mfg Co Electromagnetic relay construction
US2591684A (en) * 1948-12-23 1952-04-08 Int Standard Electric Corp Electrical contact

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012117A (en) * 1957-02-28 1961-12-05 Bernier Raymond Mounting for the fixed contacts and the terminals of an electromagnetic relay
US2905788A (en) * 1957-03-14 1959-09-22 Potter & Blomfield Inc Contact structures for relays
US3165607A (en) * 1961-08-11 1965-01-12 Ibm Armature for electro-magnetic relay
US3657673A (en) * 1968-09-13 1972-04-18 Int Standard Electric Corp Contact spring arrangement for electro-magnetic multi-contact relays
US3622729A (en) * 1969-07-25 1971-11-23 Nippon Gakki Seizo Hamamatsu S Key switch device for electronic musical instruments
US3702981A (en) * 1970-07-31 1972-11-14 Klaus Dieter Wahnschaffe Electromagnetic relay
US4027131A (en) * 1974-09-13 1977-05-31 Siemens Aktiengesellschaft Spring contact assembly

Also Published As

Publication number Publication date
CH328278A (fr) 1958-02-28
FR1105483A (fr) 1955-12-05
NL188288B (nl)
DE958137C (de) 1957-02-14
GB774832A (en) 1957-05-15
NL89712C (de)

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