US3148259A - Vacuum switch and actuator assembly - Google Patents

Vacuum switch and actuator assembly Download PDF

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Publication number
US3148259A
US3148259A US209846A US20984662A US3148259A US 3148259 A US3148259 A US 3148259A US 209846 A US209846 A US 209846A US 20984662 A US20984662 A US 20984662A US 3148259 A US3148259 A US 3148259A
Authority
US
United States
Prior art keywords
envelope
end plate
switch
stem
operating stem
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
US209846A
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English (en)
Inventor
Jennings Jo Emmett
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 US209846A priority Critical patent/US3148259A/en
Priority to CH737664A priority patent/CH416790A/de
Priority to DEJ26355A priority patent/DE1230883B/de
Application granted granted Critical
Publication of US3148259A publication Critical patent/US3148259A/en
Priority to FR988788A priority patent/FR1413230A/fr
Priority to NL6415296A priority patent/NL6415296A/xx
Priority to BE660999A priority patent/BE660999A/xx
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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/38—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • 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

  • This invention relates to vacuum switches for use in high power and high frequency circuits. More particularly the invention is directed to means for mounting a vacuum switch on an actuator or operating device and at the same time effectively insulating the actuator from the switch.
  • Still another object of the invention is the provision of a vacuum switch and actuating means therefor which may be easily assembled and disassembled.
  • FIG. 1 is a side elevation of my vacuum switch and actuator assembly, partly broken away to show internal details.
  • the plane of section of the central flanges is indicated by the line 1-1 of FIG. 2.
  • FIG. 2 is a cross sectional view taken in a plane represented by lines 2-2 in FIG. 1.
  • my switch and operator assemblies comprise a pair of glass or ceramic envelopes; one vacuumized and containing the sub-assembly of fixed and mobile switch contacts, with a switch operating stem functioning thru sealing bellows.
  • the other envelope remains at atmospheric pressure and contains the operator comprising a dielectric rod with adjustable coupling means at one end for connection to the free end of the switch stem, and means at the other end for connection to the armature of a solenoid.
  • Spring means are interposed between the dielectric rod and the end of the envelope to apply pressure against the rod at all times.
  • Current conducting leads are connected to opposite ends of the vacuumized envelope; and a quick-release clamping device is provided for securement of the aligned and adjusted pair of envelopes.
  • the vacuumized envelope with its switch components provides control of power currents, while the envelope at atmospheric pressure with its dielectric shell and dielectric connector rod insures safe operation and handling.
  • the invention comprises a switch envelope generally designated 1 which includes a glass or ceramic shell 2 provided at its opposite ends with flared seals 3,148,259 Patented Eaept. 8, 1964 I circuit.
  • End plate 5 carries a fixed contact support 8 to which is rigidly secured a fixed contact generally designated 9 which includes an annular contact element 10 preferably of tungsten.
  • the fixed contact element ill cooperates with a mobile contact element 11 carried by a mobile contact generally designated 12 which in turn is rigidly secured to a mobile contact support 13 carried by the inner end of a switch stem 14 which extends outwardly of the envelope 1 thru the end plate 6.
  • Switch stem 14 is reciprocably supported within a hearing 16 of dielectric material which in turn'is threaded within a central boss 17 formed on end plate 6. At this point it will be noted that upward movement of the switch stems from the position shown in FIG. 1 causes the mobile contact to engage the fixed contact.
  • bellows 2% In order to hermetically seal the contacts from the atmosphere a bellows 2% is provided and is fixedly secured at its inner end to mobile contact support 13 and at its outer end to the central boss 17 of end plate 6.
  • bellows 20 may conduct some current between the mobile contact and the end plate 6, it is preferably to provide a plurality of low resistance high current carrying bonding straps 23 of flexible material for making the connection between the mobile contact 12 and the end plate 6.
  • the envelope generally designated 30 which contains the actuator means preferably takes a form closely similar to that of the switch envelope 1 in that it includes a glass or ceramic shell 31 provided at one end with a flared seal 32 for connecting the shell to an end plate 33 interfitted with the end plate 6 of the switch envelope.
  • the opposite end of the shell 31 is provided with a similar flared seal 34 conecting the shell with the upper portion 35 of a solenoid generally designated 36.
  • switch stem 14 is threaded for engagement within an internally threaded sleeve 37 which is formed with a radially outwardly extending annular flange 33.
  • a compression spring 49 is interposed between flange 38 and the end plate 33 so as to urge the switch stem 14 outwardly of the switch envelope to separate the contacts 9 and i2.
  • Fixedly secured to the spring retainer flange 38 is a downwardly opening socket member or thimble 41 which is provided with flared end 42 to form a corona shield.
  • This thimble fits tightly over the upper end of a dielectric connector rod 43.
  • the opposite end of the rod fits snugly within a similar socket or thimble 44 which is also flared outwardly to provide a corona shield 45.
  • the lower thimble 44 is rigidly secured to the upper end of solenoid stem 47 which in turn is provided at its lower end with an armature 48.
  • thimbles 4i and 44 are fixedly secured to the flange 38 and stem 47 respectively, it is unnecessary to metalize the connector rod 43 for permanent securement to the thimbles inasmuch as said connector rod is always in compression, so that there is no-tendency for it to pull out of the thimbles. Furthermore, since no tension is applied to the connector rod, high grade dielectric materials may be employed despite the fact that such materials have a low tensile strength.
  • the armature 43 of the solenoid 36 cooperates with a coil 49 so that when the latter is energized the armature 43 is attracted upwardly to close the switch contacts 9 and 12.
  • the spring 40 Upon deenergization of the solenoid 36 the spring 40 returns the mechanism to the position of FIG. 1, with the solenoid armature in abutment with an annular pad 51 carried by end plate 52 of solenoid.
  • a pair of clamps generally designated 56 and 57 are provided. These clamps are identical and each is channel shaped in cross section and swingably supported at its end by a pin 58 in the end plate 6. The opposite end of each clamp is provided with a depressed portion 59 which is adapted to cooperate with one of a plurality of indentations hit on the end plate 6 and end plate 33 for yieldably holding the clamp in locked position as seen in FIG. 2.
  • Each clamp includes upper and lower legs 62 and d3 respectively connected together by vertically extending webs 64-.
  • the operator envelope may be rotated relative to the switch envelope so as to disconnect the threaded connection between stem 1 and sleeve 37.
  • stem 14 is fixed for rotation with the switch assembly by a key 65 engaged in a keyway formed in the stem; and the threaded sleeve is fixed for rotation with the actuator assembly by the key 66 engaged in a keyway cut in the bearing 67.
  • end plate 6 of switch unit 1 is provided with a central boss 68 which is received within a complementary recess on end plate 33 of actuator unit 30.
  • Adjustment of the space between the contacts 9 and I2 is readily effected, when the clamps 56 and 57 are disconnected, by rotating the actuator unit relative to the switch unit so that switch item 14 is moved axially of the sleeve 37 as desired.
  • Atmospheric pressure applied to bellows 2t will tend to urge the contacts 9 and 12 to a closed position and this atmospheric force is cumulative relative to the force applied by solenoid 36.
  • the compression spring 40 has an opposite elfect and urges the points to an open position. It is therefore a relatively simple matter to design spring 40 to obtain the desired loading and the desired force opening the switch contacts.
  • the spacing between the solenoid armature 48 and the coil 49 is of course slightly greater than the spacing between the contacts when the latter are open. In this manner a constant force is exerted by energized solenoid 36 urging the contacts to their closed position.
  • said housing is formed with an upper portion constituting an end plate having a centrally disposed slide bearing and a lower portion enclosing said motor means which comprises a magnetic coil, an armature, and a stem fixed in the armature and slidably disposed in said bearing.
  • a solenoid including an armature and its stem arranged in the housing with the armature stem in said bearing in axial alignment with said operating stem
  • VII a connector lead each for the fixed electrode on the outside of the end plate mounting and on the conductive end plate.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
US209846A 1962-07-16 1962-07-16 Vacuum switch and actuator assembly Expired - Lifetime US3148259A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US209846A US3148259A (en) 1962-07-16 1962-07-16 Vacuum switch and actuator assembly
CH737664A CH416790A (de) 1962-07-16 1964-06-05 Vakuumschalter mit Betätigungsvorrichtung
DEJ26355A DE1230883B (de) 1962-07-16 1964-08-08 Vakuumschalter
FR988788A FR1413230A (fr) 1962-07-16 1964-09-21 Commutateur dans le vide et dispositif de commande
NL6415296A NL6415296A (OSRAM) 1962-07-16 1964-12-31
BE660999A BE660999A (OSRAM) 1962-07-16 1965-03-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US209846A US3148259A (en) 1962-07-16 1962-07-16 Vacuum switch and actuator assembly

Publications (1)

Publication Number Publication Date
US3148259A true US3148259A (en) 1964-09-08

Family

ID=22780555

Family Applications (1)

Application Number Title Priority Date Filing Date
US209846A Expired - Lifetime US3148259A (en) 1962-07-16 1962-07-16 Vacuum switch and actuator assembly

Country Status (4)

Country Link
US (1) US3148259A (OSRAM)
BE (1) BE660999A (OSRAM)
CH (1) CH416790A (OSRAM)
NL (1) NL6415296A (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180138002A1 (en) * 2015-05-11 2018-05-17 General Electric Technology Gmbh Improvements in or relating to voltage source converters

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180138002A1 (en) * 2015-05-11 2018-05-17 General Electric Technology Gmbh Improvements in or relating to voltage source converters
US10504676B2 (en) * 2015-05-11 2019-12-10 General Electric Technology Gmbh Voltage source converters

Also Published As

Publication number Publication date
BE660999A (OSRAM) 1965-07-01
NL6415296A (OSRAM) 1966-07-04
CH416790A (de) 1966-07-15

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