US3238324A - Miniature hermetically sealed relay - Google Patents

Miniature hermetically sealed relay Download PDF

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Publication number
US3238324A
US3238324A US238364A US23836462A US3238324A US 3238324 A US3238324 A US 3238324A US 238364 A US238364 A US 238364A US 23836462 A US23836462 A US 23836462A US 3238324 A US3238324 A US 3238324A
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US
United States
Prior art keywords
housing
mobile contact
relay
hermetically sealed
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
US238364A
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English (en)
Inventor
Clark T Roessler
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.)
Jennings Radio Manufacturing Corp
Original Assignee
Jennings Radio Manufacturing Corp
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 Jennings Radio Manufacturing Corp filed Critical Jennings Radio Manufacturing Corp
Priority to US238364A priority Critical patent/US3238324A/en
Priority to BE669075D priority patent/BE669075A/xx
Priority to DE1965J0029009 priority patent/DE1280407B/de
Application granted granted Critical
Publication of US3238324A publication Critical patent/US3238324A/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
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed

Definitions

  • This invention relates to electric relays, and particularly to a miniature relay embodying an hermetically sealed housing.
  • the ability of a relay to withstand impact shocks and high acceleration and deceleration forces is determined to a large extent by the nature and mounting of movable parts in the relay. It is therefore another object of the invention to provide a relay capable of withstanding such forces to at least 10Gs at vibration levels of 1000 cycles per second.
  • the relay of the invention comprises a hollow housing having opposed shell-like wall portions on one of which are mounted a plurality of terminals leads, portions of which extend into the housing.
  • a suitable actuating mechanism to effect make and break operation of a mobile contact mounted within the housing in a manner to selectively make or break a circuit through one of a plurality of fixed contacts and an adjacent terminal lead common to both fixed contacts.
  • Suitable means associated with the mobile contact provide a resilient spring loading on the mobile contact tending to eliminate vibration thereof.
  • FIG. 1 is an elevation of the relay, a portion being broken away to reveal the interior construction.
  • FIG. 2 is a plan view of the relay illustrated in FIG. 1.
  • FIG. 3 is a vertical cross-sectional view taken in the plane indicated by the line 3-3 in FIG. 1.
  • FIG. 4 is a View of the interior of one of the shell-like wall portions in the direction indicated by the arrows on line 44 of FIG. 1 and illustrating the cooperative relationship between fixed and mobile contacts.
  • FIG. 5 is a view similar to FIG. 4 but taken in the Opposite direction and illustrating the actuating mechanism contained within the interior of the other shell-like housing portion.
  • FIG. 6 is a fragmentary view illustrating the assembled and at-rest relationship of fixed and mobile contacts. The view is taken in the direction of the arrow 6 in FIG. 4.
  • the miniature relay comprises a metallic housing designated generally by the numeral 2, and including a first or upper shell-like portion 3 and a second or lower shell-like portion 4, the shell-like portions being provided with radially outwardly extending peripheral flanges 5 and 6, respectively, adapted to be abutted as shown and hermetically bonded.
  • Shell portion 3 is provided with a wall 7 through which extend a plurality of substantially identical tubular terminal leads 8, each of the terminal leads being provided with relatively thin and thick wall sections 9 and 12, the thin wall section 9 being surrounded and hermetically bonded as by brazing within tubular dielectric bushing or spacer 13, preferably of ceramic.
  • each bushing rigidly supports each terminal lead on the housing and electrically insulates each terminal lead from the associated shell portion when the shell portion is fabricated from metallic material as indicated in the drawing.
  • the shell portion 3 can be fabricated from a dielectric material, such as ceramic, in which case the dielectric bushing would be eliminated and each terminal lead bonded directly to the dielectric shell.
  • the portion of each terminal lead portion outside the housing beyond the associated dielectric bushing provides for connection of the relay into a circuit, while the terminal lead portions within the housing are utilized to support cooperatively related fixed and mobile contacts.
  • two of the spaced and electrically insulated terminal leads are utilized to support a pair of rigid, plate-like conductive contact members 16 and 17, each of which is supported on an associated terminal lead.
  • the fixed contact plates are provided with mutually extending but spaced free-end portions 18 and 19, respectively, each free-end portion being angularly disposed to the main body portion of the fixed contact plate.
  • the fixed contact plates are arranged in planar alignment, and each plate hermetically seals the inner end of the associated terminal lead.
  • the inner end of the remaining terminal lead is hermetically sealed by a conductive mounting plate 21 to which is fixed, as by riveting, one end 22 of a resilient T-shaped strap-like mobile contact 23, the stem of the T-shaped strap extending transversely across the housing toward the spaced fixed contact plates.
  • the stem On its free end the stem is bifurcated to provide resilient finger-like por- 3 tions 24 and 26, the finger-like portion 24 being associated with fixed contact plate 16, and the resilient fingerlike portion 26 being associated with the fixed contact 17.
  • the fixed contact plates are in planar alignment, while the resilient finger-like portions 24 and 26 of the mobile contact are offset one from the other so as to make contact with remote sides of adjacent fixed contacts.
  • the mobile contact is preferably fabricated from beryllium copper sheet preferably having a thickness of approximately .005, while the fixed contact plates are preferably fabricated from substantially thicker oxygen free high conductive copper plate.
  • the resilient finger-like portions 24 and 26 of the mobile contact are offset only .043". This much of an offset provides approximately .008" of gap between each fixed contact and the associated resilient finger-like portion 24 or 26 when in the open position.
  • the mobile contact because of its strap-like nature and the proportions of the parts possesses inherent resiliency contributing from a .003" to .005" of overtravel.
  • the structure may of course be scaled up or down.
  • a remotely controllable solenoid designated generally by the numeral 31 is provided securely mounted on wall section 32'of shell 4;
  • the solenoid includes a magnetic housing 33 the inner end of which projects into the housing and is hermetically sealed by a transverse ferromagnetic wall 34 brazed about its outer periphery Within the solenoid housing and'having brazed within its inner periphery a magnetizable core 36.
  • Core and housing are coaxially arranged to provide an annular space therebetween within which is detachably mounted a suitable coil 37.
  • End cap 38 secured to the threaded end portion of the core retains the coil within the housing and completes the magnetic circuit around this end of the housing.
  • the low reluctance housing is provided with a ferromagnetic armature 39 resiliently hinged on the inner end of the housing by a spring 41, one end of which engages the armature and the other end of which is secured to the housing through a suitable mounting pad 42.
  • the spring is preferably biased to urge the armature toward the adjacent T-shaped mobile contact.
  • the armature is provided with an aperture 43 chamfered as shown to receive a spherical dielectric thrust or electrically insulating member 44.
  • the parts are proportioned so that the sphere abuts the underside of mobile contact 23 when resting in the chamfered aperture, thus exertlng a resillent force thereagainst to displace the mobile contact in a direction to make a circuit through resilient finger-like portion 24 and fixed contact 16.
  • this resilient force is provided by leaf spring 41, but it will of course be understood that other types of spring means may be utilized.
  • the coil is provided with appropriate terminals 46 and 47 to energize the coil and complete a magnetic circuit through the armature to pull the armature against the inner end of the core.
  • the dielectric sphere is pulled away from the mobile contact which, because of its inherent resilience, follows the sphere downwardly until the mobile contact is suspended on resilient-like portion 26. In this position of theparts the dielectric sphere remains in the aperture provided to receive it and thus in either position of the mobile contact the actuating assembly is electrically insulated from the mobile contact.
  • the embodiment of the relay illustrated utilizes an evacuated housing provided with a suitable tubulation 48, but it is to be understood however that instead of being evacuated the housing may be charged with a suitable gas.
  • a relay comprising a housing, a plurality of terminal leads extending into and supported on the housing to provide inner and outer spaced terminal ends, a plurality of fixed contacts within the housing on the inner terminal ends of at least two of the terminal leads, a mobile contact supported within the housing on one of said inner spaced terminal ends and normally resiliently urged in a first direction tending to displace the mobile contact to make a circuit through a first one of the fixed contacts and an adjacent terminal lead including said inner spaced terminal end on which the mobile contact is supported, and an actuating assembly mounted on the housing and operatively connected to the mobile contact and normally resiliently urging the mobile contact in a second direction opposite to said first direction tending to displace the mobile contact to break a circuit through said first one of said fixed contacts and make a circuit through the second one of the fixed contacts and said adjacent terminal lead.
  • the fixed contacts comprise rigid plate-like conductive members having mutually extending but spaced free-end portions providing fixed contact surfaces.
  • the mobile contact comprises a resilient strap-like member conductively connected at one end to one of the terminal leads and bifurcated at its other end adjacent the fixed contacts.
  • said housing comprises opposed shell portions having peripheral flanges adapted to be abutted and hermetically sealed.
  • terminal leads comprise tubular metallic members having relatively thick and thin wall portions and the thin walled portions are hermetically united to the housing wall.
  • said actuating assembly comprises an electromagnetically operated solenoid including an armature within the housing resiliently urged in said second direction, and dielectric means interposed between the armature and the mobile contact electrically insulating the actuating assembly from the mobile contact.
  • a fixed and mobile contact assembly comprising a pair of rigid plate-like conductive members mounted on a pair of said terminal leads and extending substantially perpendicularly therefrom to provide fixed contact surfaces remote from said terminal leads, a mobile contact comprising a resilient strap-like member conductively connected at one end to one of said terminals and extending substantially perpendicularly therefrom between said pair of said terminals and providing a resilient strap-like portion movable to engage and disengage said fixed contact surfaces, and means on the housing to effect movement of the mobile contact.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US238364A 1962-11-19 1962-11-19 Miniature hermetically sealed relay Expired - Lifetime US3238324A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US238364A US3238324A (en) 1962-11-19 1962-11-19 Miniature hermetically sealed relay
BE669075D BE669075A (en:Method) 1962-11-19 1965-09-02
DE1965J0029009 DE1280407B (de) 1962-11-19 1965-09-17 Elektromagnetisches Relais mit Umschaltkontakt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US238364A US3238324A (en) 1962-11-19 1962-11-19 Miniature hermetically sealed relay

Publications (1)

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US3238324A true US3238324A (en) 1966-03-01

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US238364A Expired - Lifetime US3238324A (en) 1962-11-19 1962-11-19 Miniature hermetically sealed relay

Country Status (2)

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US (1) US3238324A (en:Method)
BE (1) BE669075A (en:Method)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344253A (en) * 1965-02-15 1967-09-26 Jennings Radio Mfg Corp Relay having improved armature and mobile contact assembly
US3411118A (en) * 1966-07-28 1968-11-12 High Vacuum Electronics Inc Vacuum relay with improved armature mounting and movable contact
US3891950A (en) * 1974-08-05 1975-06-24 Lucia Victor E De Pressurized relay assembly
USRE29174E (en) * 1974-08-05 1977-04-05 Torr Laboratories, Inc. Pressurized relay assembly
EP0801798A4 (en) * 1994-03-04 1998-12-09 Kilovac Corp SEALED RELAY ARRANGEMENT
RU2138092C1 (ru) * 1998-03-23 1999-09-20 Уфимское государственное производственное предприятие "ЭЛЕКТРОАППАРАТ" Вакуумный выключатель и способ его работы (варианты)
RU2474905C1 (ru) * 2011-08-15 2013-02-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенская государственная технологическая академия" Высоковольтный вакуумный выключатель

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1905751A (en) * 1929-12-26 1933-04-25 Gen Electric Vacuum sealing structure
US2432230A (en) * 1946-03-29 1947-12-09 Dorne Arthur Electrical apparatus
US2810026A (en) * 1953-12-02 1957-10-15 Vigren Sten Daniel Electric switching devices
US2868922A (en) * 1957-01-14 1959-01-13 Penta Lab Inc Vacuum switch
US2911398A (en) * 1952-12-31 1959-11-03 Hercules Powder Co Ltd Polymer hydroperoxides
US2922855A (en) * 1955-01-31 1960-01-26 Giannini Controls Corp Magnetic switch device
US2979588A (en) * 1958-12-09 1961-04-11 Jennings Radio Mfg Corp Vacuum switch
US2997669A (en) * 1958-02-03 1961-08-22 Thompson Ramo Wooldridge Inc Broad band lobing switch
US3021408A (en) * 1959-05-18 1962-02-13 Jennings Radio Mfg Corp Coaxial switch
US3026394A (en) * 1959-11-10 1962-03-20 Jennings Radio Mfg Corp Vacuumized electric switch
US3033957A (en) * 1960-07-12 1962-05-08 Gen Electric Electromagnetic relay
US3068335A (en) * 1960-06-21 1962-12-11 Litton Systems Inc Dry circuit switch

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1905751A (en) * 1929-12-26 1933-04-25 Gen Electric Vacuum sealing structure
US2432230A (en) * 1946-03-29 1947-12-09 Dorne Arthur Electrical apparatus
US2911398A (en) * 1952-12-31 1959-11-03 Hercules Powder Co Ltd Polymer hydroperoxides
US2810026A (en) * 1953-12-02 1957-10-15 Vigren Sten Daniel Electric switching devices
US2922855A (en) * 1955-01-31 1960-01-26 Giannini Controls Corp Magnetic switch device
US2868922A (en) * 1957-01-14 1959-01-13 Penta Lab Inc Vacuum switch
US2997669A (en) * 1958-02-03 1961-08-22 Thompson Ramo Wooldridge Inc Broad band lobing switch
US2979588A (en) * 1958-12-09 1961-04-11 Jennings Radio Mfg Corp Vacuum switch
US3021408A (en) * 1959-05-18 1962-02-13 Jennings Radio Mfg Corp Coaxial switch
US3026394A (en) * 1959-11-10 1962-03-20 Jennings Radio Mfg Corp Vacuumized electric switch
US3068335A (en) * 1960-06-21 1962-12-11 Litton Systems Inc Dry circuit switch
US3033957A (en) * 1960-07-12 1962-05-08 Gen Electric Electromagnetic relay

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344253A (en) * 1965-02-15 1967-09-26 Jennings Radio Mfg Corp Relay having improved armature and mobile contact assembly
US3411118A (en) * 1966-07-28 1968-11-12 High Vacuum Electronics Inc Vacuum relay with improved armature mounting and movable contact
US3891950A (en) * 1974-08-05 1975-06-24 Lucia Victor E De Pressurized relay assembly
USRE29174E (en) * 1974-08-05 1977-04-05 Torr Laboratories, Inc. Pressurized relay assembly
EP0801798A4 (en) * 1994-03-04 1998-12-09 Kilovac Corp SEALED RELAY ARRANGEMENT
RU2138092C1 (ru) * 1998-03-23 1999-09-20 Уфимское государственное производственное предприятие "ЭЛЕКТРОАППАРАТ" Вакуумный выключатель и способ его работы (варианты)
RU2474905C1 (ru) * 2011-08-15 2013-02-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенская государственная технологическая академия" Высоковольтный вакуумный выключатель

Also Published As

Publication number Publication date
BE669075A (en:Method) 1966-03-02

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