US2389592A - Relay structure - Google Patents

Relay structure Download PDF

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Publication number
US2389592A
US2389592A US384542A US38454241A US2389592A US 2389592 A US2389592 A US 2389592A US 384542 A US384542 A US 384542A US 38454241 A US38454241 A US 38454241A US 2389592 A US2389592 A US 2389592A
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United States
Prior art keywords
envelope
relay
contact
terminals
armature
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
US384542A
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English (en)
Inventor
Jr Herbert E Bucklen
Uno C Hedin
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BUCKLEN JR
Original Assignee
BUCKLEN JR
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
Priority to US384542D priority Critical patent/USB384542I5/en
Application filed by BUCKLEN JR filed Critical BUCKLEN JR
Priority to US384542A priority patent/US2389592A/en
Application granted granted Critical
Publication of US2389592A publication Critical patent/US2389592A/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
    • H01H51/29—Relays having armature, contacts, and operating coil within a sealed casing

Definitions

  • This invention relates to metal envelope relay structures, and more particularly is directed to the hermetic sealing of an electromagnetic relay in such fashion that both the relay and the actuating coil are enclosed within a sealed metal envelope and subjected-to a hydrogen or inert gas atmosphere under pressure.
  • the envelope may or maynot be a magnetic material.
  • One of the primary objects of the present invention is to place an electro-magnetic relay within a metal envelope in such manner that both the coil and the contacts are effectively insulated from atmosphere.
  • the envelope is preferably evacuated and then filled with either hydrogen or an inert gas under pressure, whereby a non-oxidizing atmosphere is maintained at the contacts, preventing their deterioration or pitting and maintaining the contact surfaces, both of the armature and of the relay contacts, clean and bright.
  • relays when of time, may become coated with dust or moisture films producing rusting or rendering the contacts such that increased resistance through the relay is produced.
  • the present invention therefore contemplates the overcoming of these objections and the production of an enclosed sealed type relay capable of giving continued performance with the same operating characteristics over long periods of time without the necessity of replacing contacts or the like.
  • FIG. 1 is a sectional view of an envelope embodying our present invention
  • Figure 2 is a bottom plan view of the structure shown in Figure 1, showing the manner in which the terminals are led into the envelope;
  • Figure 3 is an elevational view, partly in section, of a modified construction.
  • Figure 4 is a diagrammatic view showing the manner in which a three-phase relay may be provided within the envelope.
  • a metal envelope 5 having the enlarged open end 6 joined to the main body portion of the envelope by the frusto-conical shoulder I.
  • an insulating plug 8 Seated within the open end of the envelope against the shoulder edge is an insulating plug 8 which may be formed of ceramic, Bakelite, or any similar insulating material, and. which has a firm seat against the shoulder l, holding it against movement axially inwardly of the envelope.
  • the plug 8 is provided with a reduced tapered extension 8 around which is adapted to extend a peripheral flange portion ill of a resilient sealing gasket l2, which gasket may be formed of rubber or similar sealing material.
  • a suitable retaining ring it is pressed into the end of the envelope, and holds the gasket 12 compressed by being retained under the spun-over edge 15 of the envelope. This compression of the gasket [2 radially expands the same into sealing-engagement with the internal wall of the enlarged end 6 of the envelope, and also about the terminals projecting axially therethrough.
  • the envelope has four such terminals extending therethrough when a single circuit controlling relay is provided. These terminals are indicated at ii, ll, l8 and IS in Figure 2.
  • the terminals l6 and i8 form the two terminal connections to a solenoid coil Ill mounted within the bracket member 22 forming a support for the core 23 of the relay structure.
  • The, bracket 22 is preferably secured to the inner radial face of the insulating plug I by the screws 2!, and the base portion of this bracket preferably has the enlarged openings 25 through which the terminal studs I i and II extend whereby they are insulated from the bracket 22;
  • the bracket is additionally provided with the normally extended arm portion 26 which, at its free end, is reduced to provide a pivot stud 21 for receiving the/end of the relay armature 28.
  • the armature 28 is preferably provided with the enlarged opening 29 fitting about the stud 21 to accommodate pivotal movement thereabout.
  • a suitable spring 30 is biased between theextending car 32 of the armature 28, and a projecting portion 33 formed'at the base of the arm 26. This spring normally biases the armature 28 in acounter-clockwise direction relative to the pivot 21.
  • the contact carrying member 29 mounted with the spaced contact tip portion 30.
  • the stud H which projects into the envelope parallel to'the stud I6 tion 34 adapted to be engaged by the contact 30.
  • the second terminal stud i 9 has a pig tail connection 35 to the contact carrying arm 29, whereby upon energization of the coil 20, the core 23 attracts the armature 28 to the left, as viewed in Figure 1, closing the circuit between contacts 36 and 34, and consequently closing the circuit between the contact studs H and I9, This is the circuit controlled by the relay.
  • terminals it to i9, inclusive form rigid projections outwardly of the envelope, and the structure is adapted for seating in a socket or panel, if so desired, to establish circuit connections similar to the manner of connecting a radio tube through its prong extensions.
  • the spring 30 Upon deenergization of the coil 20, the spring 30 snapsthe' armature 28 in a counter-clockwise direction away from core 23, thereby providing a snap action breaking of contact between contacts 39 and 34, thereby opening the circuit between terminals ill and 59;
  • each of the terminals it to H9, inclusive is provided with shouldered portions 36 set into corresponding recesses in the outer face of the insulating plug 8 whereby they are limited from axial inward movement,
  • rubber gasket l2 seals the projecting portions of the terminals about the shouldered portions, thereby providing an effective seal preventing leakage of gas or moisture into or out of the open end of the envelope 5.
  • a tubulation 4B which has a flange end 432 welded or otherwise suitably secured to the inner face of the closed end portion, and which can be connected to .a source of vacuum or a source of hydrogen or inert gas under pressure.
  • a source of vacuum or a source of hydrogen or inert gas under pressure When the parts have been assembled in the position shown in Figure 1, the tubulation is connected to the vacuum and the envelope is evacuated of all gases, moisture and the like, The tubulation is then connected to a'source of hydrogen gas under pressure or an inert gas, and the interior of the envelope filled with such gas under a pressure of from 2 to 3 atmospheres. With the pressure being maintained, the tubulation is pinched closed, as indicated at 43, and welded, thereby providing a sealed envelope within which the relay structure is disposed.
  • a metal envelope 45 is provided, which may be formed of non-magnetic material if so desired.
  • This envelope is counterbored to receive the disc 46, after which the projecting parallel arm portions of the bracket 22 form the g edge of the envelope is spun over, as indicated at 41, and welded to the outer face of the disc,
  • the disc 46 is adapted to carry the bracket 22 supporting the coil 20, and also has suitable openings therein through which extend the terminals 16 and 18 providing the connections to the coil.
  • the terminals i6 and i8 are sealed in position, as indicated at 49.
  • terminals l1 and I9 are also extending through the disc 46 extending through the disc 46.
  • Each of these terminals is provided with a reduced neck portion 50 at the point where it enters the disc 46, and a suitable glass sealing means 52 is provided for sealing the terminals ll and IS in position.
  • This sealing means may comprise a borosilicate compound which has substantially the same coeiiicient of thermal expansion as the disc 46, thereby providing a tight seal therebetween.
  • the operation of the structure shown in Figure 3 is similar to that shown in Figures 1 and 2..
  • the armature 28 of the relay in this form of the invention is provided at its end with a laterally extending contact bridge member 58 provided with three terminal contact fingers 59, each carrying a contact 60 corresponding to contact 313 shown in Figure 1.
  • three contact terminals 62 are provided, each terminating at their inner end in a contact tip portion adapted to be engaged by the contact fill oi the fingers 69.
  • the member 58 is preferably formed of resilient spring like material so that contact of all three fingers will be efiected upon energization of the coil 2t.
  • the contacts 30, 3t and 60 are preferably formed of-coin silver or the like to provide low resistance through the relay.
  • the armature 28 in Figure 4 is provided with a pig tail connection to a terminal, such as the terminal member l9 whereby the circuit is led into the contact bridging member 58. in other respects, the operation of the device shown in Figure 4 is similar to that described in Figure l.
  • An enclosed relay construction comprising a cup-shaped metal envelope having an annular shoulder intermediate its ends, an insulatin member inserted through the open end of said envelope into abutment against said shoulder, a normal open air contact type relay rigidly supported on the inner face of said member and including an actuating coil, a fixed contact and an armature, terminal posts for said coil, contact and armature extending axially through said member and having means limiting inward movement thereof relative to said member, a resilient variations.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Motor Or Generator Frames (AREA)
US384542A 1941-03-21 1941-03-21 Relay structure Expired - Lifetime US2389592A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US384542D USB384542I5 (cs) 1941-03-21
US384542A US2389592A (en) 1941-03-21 1941-03-21 Relay structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US384542A US2389592A (en) 1941-03-21 1941-03-21 Relay structure

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US2389592A true US2389592A (en) 1945-11-27

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US384542A Expired - Lifetime US2389592A (en) 1941-03-21 1941-03-21 Relay structure

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2539547A (en) * 1945-06-13 1951-01-30 Clare & Co C P Relay
US2633510A (en) * 1951-09-13 1953-03-31 Hetherington Inc Electric switch
US2641665A (en) * 1946-09-21 1953-06-09 Int Standard Electric Corp Electromagnetic relay armature mounting and biasing
US2664455A (en) * 1951-11-29 1953-12-29 Cornell Dubilier Electric Weatherproof vibrator assembly
US2712046A (en) * 1950-06-06 1955-06-28 Bronee Torben Thermo-switch for fire alarm systems
US2725446A (en) * 1950-11-18 1955-11-29 Westinghouse Electric Corp Circuit interrupter
US2732451A (en) * 1946-07-05 1956-01-24 Degler
US2764656A (en) * 1952-07-26 1956-09-25 Clare & Co C P Relay
US2764654A (en) * 1952-07-26 1956-09-25 Clare & Co C P Relay
US2775666A (en) * 1951-04-19 1956-12-25 Westinghouse Air Brake Co Electrical relays
US2809262A (en) * 1954-12-10 1957-10-08 Carter Parts Company Foot dimmer switch
US2843708A (en) * 1955-05-31 1958-07-15 Guardian Electric Mfg Co Header for electrical devices and method of making the same
US2870287A (en) * 1956-02-13 1959-01-20 Aerojet General Co Electrical device
US2870286A (en) * 1955-03-30 1959-01-20 Piqua Machine & Mfg Company Electric switch
US2943169A (en) * 1957-10-07 1960-06-28 Gen Motors Corp Regulator
US3025372A (en) * 1958-08-07 1962-03-13 Benjetsky Louis Reciprocating type actuating means
US4176241A (en) * 1976-04-13 1979-11-27 Siemens Aktiengesellschaft Fluid-tight protective system for an electromechanical component
US6204460B1 (en) * 1996-05-28 2001-03-20 Matasushita Electric Works, Ltd. Sealed contact device, a method of producing a sealed contact device, and a sealing method

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2539547A (en) * 1945-06-13 1951-01-30 Clare & Co C P Relay
US2732451A (en) * 1946-07-05 1956-01-24 Degler
US2641665A (en) * 1946-09-21 1953-06-09 Int Standard Electric Corp Electromagnetic relay armature mounting and biasing
US2712046A (en) * 1950-06-06 1955-06-28 Bronee Torben Thermo-switch for fire alarm systems
US2725446A (en) * 1950-11-18 1955-11-29 Westinghouse Electric Corp Circuit interrupter
US2775666A (en) * 1951-04-19 1956-12-25 Westinghouse Air Brake Co Electrical relays
US2633510A (en) * 1951-09-13 1953-03-31 Hetherington Inc Electric switch
US2664455A (en) * 1951-11-29 1953-12-29 Cornell Dubilier Electric Weatherproof vibrator assembly
US2764654A (en) * 1952-07-26 1956-09-25 Clare & Co C P Relay
US2764656A (en) * 1952-07-26 1956-09-25 Clare & Co C P Relay
US2809262A (en) * 1954-12-10 1957-10-08 Carter Parts Company Foot dimmer switch
US2870286A (en) * 1955-03-30 1959-01-20 Piqua Machine & Mfg Company Electric switch
US2843708A (en) * 1955-05-31 1958-07-15 Guardian Electric Mfg Co Header for electrical devices and method of making the same
US2870287A (en) * 1956-02-13 1959-01-20 Aerojet General Co Electrical device
US2943169A (en) * 1957-10-07 1960-06-28 Gen Motors Corp Regulator
US3025372A (en) * 1958-08-07 1962-03-13 Benjetsky Louis Reciprocating type actuating means
US4176241A (en) * 1976-04-13 1979-11-27 Siemens Aktiengesellschaft Fluid-tight protective system for an electromechanical component
US6204460B1 (en) * 1996-05-28 2001-03-20 Matasushita Electric Works, Ltd. Sealed contact device, a method of producing a sealed contact device, and a sealing method

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Publication number Publication date
USB384542I5 (cs)

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