EP0183867A1 - Relay for high-frequency circuits - Google Patents
Relay for high-frequency circuits Download PDFInfo
- Publication number
- EP0183867A1 EP0183867A1 EP84114797A EP84114797A EP0183867A1 EP 0183867 A1 EP0183867 A1 EP 0183867A1 EP 84114797 A EP84114797 A EP 84114797A EP 84114797 A EP84114797 A EP 84114797A EP 0183867 A1 EP0183867 A1 EP 0183867A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- armature block
- relay
- contacts
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/22—Polarised relays
- H01H51/2227—Polarised relays in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/10—Electromagnetic or electrostatic shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
- H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
Definitions
- This invention relates to an electromagnetic relay for use in a high-frequency circuit.
- a single-pole relay for switching high-frequency currents has been proposed in which a contact system contained in an elongate shield casing is disposed at one side of the relay coil and includes two contact springs mounted in an actuator which is moved between two switching positions in a direction perpendicular of the relay coil by means of an L-shaped armature due to energization of the coil.
- the two contact springs extend parallel to the coil axis and cooperate with a total of three fixed contacts inserted in the high-frequency circuit to be switched by the relay, so as to form a single-pole switch-over contact system.
- the electromagnetic relay of the present invention comprises a coil; an armature block mounted for pivotal movement between two switching positions by energization of the coil; a pair of contact systems disposed on opposite sides of the armature block, each contact system being surrounded by electrically conductive shield means and including a first fixed contact disposed in the high-frequency circuit, a second fixed contact connected to the shield means, and a movable contact; and actuator means linking the movable contacts to the armature block for causing engagement between each movable contact and the associated first and second fixed contact, respectively, in either switching position of the armature block.
- each movable contact is formed by a contact spring mounted in a separate actuating member which is independently coupled to the armature block.
- each such actuating member is formed by a card mounted for slidable movement generally perpendicularly to the sides of the armature block, with one end of the card abutting the armature block and the opposite end being biased by a spring towards the armature block.
- a magnet system B is disposed in the center of the relay, and two contact systems A are disposed on both sides of the magnet system B.
- the magnet system B includes a coil 1 wound about a bobbin 14 located in a base member 4, with the axis of the coil 1 extending parallel to a center line of the base member 4.
- the ends of the coil 1 are connected to coil terminals 21 which extend downwardly through the bobbin 14 and the base member 4.
- a generally U-shaped yoke 12 extends through a central bore of the bobbin 14. Both ends of the yoke 12, which form magnetic pole pieces 2, extend from the ends of the bobbin 14 upwardly and perpendicularly with respect to the coil axis. Non-magnetic separating plates 22 are provided on the two opposite lateral faces of each pole piece 2.
- a generally H-shaped armature 3 is pivotally mounted about an upwardly extending shaft 16 integrally formed on a bearing plate 25 mounted on the bobbin 14.
- the armature 3 contains two parallel pole plates 17 and a permanent magnet 15 disposed therebetween in such a manner that the pole plates 17 abut opposite poles of the magnet 15.
- the ends of the pole plates 17 cooperate with the pole pieces 2 of the yoke 12.
- the separating plates 22 disposed on opposite faces of each pole piece 2 have different thicknesses to achieve a monostable relay function, in which the position shown in Fig. 1 is the inoperative switching position.
- the armature 3 When the coil 1 is energized, the armature 3 will rotate counter-clockwise about the shaft 16 to the other switching position in which the respective other ends of the pole plates 17 abut those faces of the pole pieces 2 where the thicker separating plates 22 are provided. When the coil 1 is deenergized, the armature 3 will return to the rest position shown in Fig. 1.
- a polarized electromagnetic relay having a magnet system of the general type so far described is known from US patent specification No. 3 993 971.
- each contact system A includes a central fixed contact 6, a pair of outer fixed contacts 7 disposed to form, with the central contact 6, a straight line parallel to the coil axis, and a pair of movable contact springs 8, also generally extending parallel to the coil axis.
- the fixed contacts 6, 7 are connected to respective contact terminals 26, 27 which extend downwardly through the base member 4, as shown in Figs. 2 and 3.
- Each bifurcated contact spring 8 is embedded in an actuator card 5 so as to project from both sides of the card at substantially equal lengths.
- Each card 5 slidably engages a guiding groove 29 provided in the base member 4 as shown in Figs. 1 and 3.
- the inner end of each card 5 abuts against a side surface of the armature 3, and a return spring 19 engages the outer end of the card 5 to bias the card against the armature 3.
- a common return spring 19 is provided for both cards 5 disposed on the same side of the armature 3.
- each contact spring 8 is disposed between an outer fixed contact 7 and an outer ground contact 10.
- the inner end of each contact spring 8 is disposed between the central fixed contact 6 and a central ground contact 11.
- the central fixed contact 6 and the central ground contact 11 are of increased width for cooperation with both contact springs 8 of the same contact system A.
- separate middle contacts may be provided for cooperation with the two contact springs to provide a four-contact system.
- Each contact system A is surrounded by an open-top elongate shield casing 9 which is shown as such in Figs. 4 and 5.
- a total of six ground terminals 20 are formed by punching and bending strips from the side and bottom walls of the casing 9. These ground terminals also extend downwardly through the base member 4 as shown in Fig. 2. Further strips of material are cut and bent from the side wall of the casing 9, which form the ground contacts 10 and 11.
- appertures 30 and 31 are provided through which the fixed contacts 7 and 6 project into the interior of the shield casing 9, as shown in Fig. 1.
- the side walls of the casing 9 are further provided with windows 18 through which the cards 5 extend.
- a pair of projections 37 may be provided on the bottom wall of the casing 9 in alignment with the two lateral edges of each pair of opposing windows 18 to guide the respective card 5.
- the shield casings 9 are inserted in recesses 13 of the base member 4 as shown in Fig. 3.
- the bottom surface of these recesses 13 is situated below the bottom surface of the grooves 29 which serve to guide the cards 5.
- the shield casings 9 are held in place in their recesses 13 by means of their ground terminals 20 which penetrate through the base member 4.
- a cover 23 closes the upper side of the base member 4 and carries two shield plates 24 which serve to close the open tops of the shield casings 9. As shown in Fig. 6, the underside of each shield plate 24 is provided with two pairs of parallel ribs 38 which further serve to guide the respective cards 5.
- the shield casings 9 and shield plates 24 are of highly conductive material, just as are the fixed contacts 6, 7 with their contact terminals 26, 27 and the contact springs 8, the base member 4, the cover 23 and the cards 5 are of insulating, preferably synthetic material,just as all other components of the relay which have neither an electrical nor a magnetic function.
- the armature 3 When the armature 3 is in a neutral center position in which its longitudinal axis extends parallel to the coil axis, the whole relay structure is symmetrical with respect to that axis and also with respect to an axis which is perpendicular thereto and extends vertically in Fig. 1.
- Fig. 7 shows a schematic cross-sectional view of an embodiment in which the base member 4 is provided with holes 39 to permit a sealant, which is used to seal the terminals 20, 21, 26 and 27 to the base member 4, to reach the bearing plate 25 for the armature 3 and to serve as an adhesive for fixing the bearing plate 25 to the base member 4.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
Description
- This invention relates to an electromagnetic relay for use in a high-frequency circuit.
- A single-pole relay for switching high-frequency currents has been proposed in which a contact system contained in an elongate shield casing is disposed at one side of the relay coil and includes two contact springs mounted in an actuator which is moved between two switching positions in a direction perpendicular of the relay coil by means of an L-shaped armature due to energization of the coil. The two contact springs extend parallel to the coil axis and cooperate with a total of three fixed contacts inserted in the high-frequency circuit to be switched by the relay, so as to form a single-pole switch-over contact system.
- If the relay of the above type were designed so that the two opposite poles of a high-frequency circuit could be switched-over simultaneously by the same actuator movement, two contact systems would be required which would have to be separated from each other by a-sufficient spacing to achieve the necessary electrical separation between the two opposite polarities. The overall size of such a relay would become considerable.
- Another problem with the relay described above resides in the fact that both contact springs are fixed to the same actuator. Therefore, if the closing and opening function of one contact spring is to be adjusted by applying pressure to the spring to cause a slight deformation thereof, thus a variation in the contact pressure, such manipulation will also influence the characteristic of the other contact spring, so that an adjustment of the hole structure is difficult.
- It is an object of the present invention to provide a relay for high-frequency circuits capable of switching two different polarities thereof, in which sufficient electrical separation between the two polarities is achieved at comparatively small overall relay dimensions. It is another object of the invention to provide a relay of this type in which each contact may be independently adjusted.
- In view of the above objects, the electromagnetic relay of the present invention comprises a coil; an armature block mounted for pivotal movement between two switching positions by energization of the coil; a pair of contact systems disposed on opposite sides of the armature block, each contact system being surrounded by electrically conductive shield means and including a first fixed contact disposed in the high-frequency circuit, a second fixed contact connected to the shield means, and a movable contact; and actuator means linking the movable contacts to the armature block for causing engagement between each movable contact and the associated first and second fixed contact, respectively, in either switching position of the armature block.
- Due to the disposition of the armature block between the two contact systems, a spacing between the contact systems as required for high-frequency installations is achieved even though all three of these components are arranged closely together to achieve minimum overall relay dimensions.
- In a preferred embodiment of the invention, each movable contact is formed by a contact spring mounted in a separate actuating member which is independently coupled to the armature block. Preferably, each such actuating member is formed by a card mounted for slidable movement generally perpendicularly to the sides of the armature block, with one end of the card abutting the armature block and the opposite end being biased by a spring towards the armature block. With such a structure, each individual contact spring may be independently adjusted in its switching behaviour by deformation without influencing the characteristics of the other contact springs.
-
- Figure 1 is a top view (cover removed) of a double-pole relay for use in a high-frequency circuit in accordance with an embodiment of the invention;
- Figure 2 is a section taken along the line II-II of Fig. 1;
- Figure 3 is a section taken along the line III-III in Fig. 1;
- Figure 4 is a top view of a shield casing which forms part of the relay of Fig. 1;
- Figure 5 is a side view, partly shown in section, of the shield casing of Fig. 4;
- Figure 6 is a perspective view of a shield plate for closing the shield casing of Figs. 4 and 5; and
- Figure 7 is a sectional view on a reduced scale of another embodiment of the invention.
- As shown in Fig. 1, a magnet system B is disposed in the center of the relay, and two contact systems A are disposed on both sides of the magnet system B.
- Referring to Figs. 1 to 3, the magnet system B includes a coil 1 wound about a
bobbin 14 located in abase member 4, with the axis of the coil 1 extending parallel to a center line of thebase member 4. The ends of the coil 1 are connected tocoil terminals 21 which extend downwardly through thebobbin 14 and thebase member 4. - A generally U-shaped
yoke 12 extends through a central bore of thebobbin 14. Both ends of theyoke 12, which formmagnetic pole pieces 2, extend from the ends of thebobbin 14 upwardly and perpendicularly with respect to the coil axis. Non-magneticseparating plates 22 are provided on the two opposite lateral faces of eachpole piece 2. - A generally H-
shaped armature 3 is pivotally mounted about an upwardly extendingshaft 16 integrally formed on abearing plate 25 mounted on thebobbin 14. Thearmature 3 contains twoparallel pole plates 17 and apermanent magnet 15 disposed therebetween in such a manner that thepole plates 17 abut opposite poles of themagnet 15. The ends of thepole plates 17 cooperate with thepole pieces 2 of theyoke 12. In the embodiment shown in Fig. 1, theseparating plates 22 disposed on opposite faces of eachpole piece 2 have different thicknesses to achieve a monostable relay function, in which the position shown in Fig. 1 is the inoperative switching position. When the coil 1 is energized, thearmature 3 will rotate counter-clockwise about theshaft 16 to the other switching position in which the respective other ends of thepole plates 17 abut those faces of thepole pieces 2 where the thicker separatingplates 22 are provided. When the coil 1 is deenergized, thearmature 3 will return to the rest position shown in Fig. 1. - A polarized electromagnetic relay having a magnet system of the general type so far described is known from US patent specification No. 3 993 971.
- As further shown in Figs. 1 to 3, each contact system A includes a central
fixed contact 6, a pair of outerfixed contacts 7 disposed to form, with thecentral contact 6, a straight line parallel to the coil axis, and a pair ofmovable contact springs 8, also generally extending parallel to the coil axis. Thefixed contacts respective contact terminals base member 4, as shown in Figs. 2 and 3. - Each bifurcated
contact spring 8 is embedded in anactuator card 5 so as to project from both sides of the card at substantially equal lengths. Eachcard 5 slidably engages a guidinggroove 29 provided in thebase member 4 as shown in Figs. 1 and 3. The inner end of eachcard 5 abuts against a side surface of thearmature 3, and areturn spring 19 engages the outer end of thecard 5 to bias the card against thearmature 3. As shown in Fig. 1, acommon return spring 19 is provided for bothcards 5 disposed on the same side of thearmature 3. - The outer end of each
contact spring 8 is disposed between an outer fixedcontact 7 and anouter ground contact 10. The inner end of eachcontact spring 8 is disposed between the central fixedcontact 6 and acentral ground contact 11. The central fixedcontact 6 and thecentral ground contact 11 are of increased width for cooperation with bothcontact springs 8 of the same contact system A. Alternatively, separate middle contacts may be provided for cooperation with the two contact springs to provide a four-contact system. - In the rest position of the relay shown in Fig. 1, the upper
left contact spring 8 and the lowerright contact spring 8 each bridge the corresponding outerfixed contact 7 with the centralfixed contact 6, while the upperright contact spring 8 and the lowerleft contact spring 8 each bridge twoground contacts armature 3 is rotated into its other switching position, the upper left and lower right contact springs will bridge ground contacts, whereas the upper right and lower left contact springs will each interconnect anouter contact 7 with the respectivecentral contact 6. When thefixed contacts - Each contact system A is surrounded by an open-top
elongate shield casing 9 which is shown as such in Figs. 4 and 5. A total of sixground terminals 20 are formed by punching and bending strips from the side and bottom walls of thecasing 9. These ground terminals also extend downwardly through thebase member 4 as shown in Fig. 2. Further strips of material are cut and bent from the side wall of thecasing 9, which form theground contacts shield casing 9 adjacent to theground contacts appertures fixed contacts shield casing 9, as shown in Fig. 1. The side walls of thecasing 9 are further provided withwindows 18 through which thecards 5 extend. A pair ofprojections 37 may be provided on the bottom wall of thecasing 9 in alignment with the two lateral edges of each pair of opposingwindows 18 to guide therespective card 5. - The
shield casings 9 are inserted inrecesses 13 of thebase member 4 as shown in Fig. 3. The bottom surface of theserecesses 13 is situated below the bottom surface of thegrooves 29 which serve to guide thecards 5. Theshield casings 9 are held in place in theirrecesses 13 by means of theirground terminals 20 which penetrate through thebase member 4. - A
cover 23 closes the upper side of thebase member 4 and carries twoshield plates 24 which serve to close the open tops of theshield casings 9. As shown in Fig. 6, the underside of eachshield plate 24 is provided with two pairs ofparallel ribs 38 which further serve to guide therespective cards 5. - While the
shield casings 9 andshield plates 24 are of highly conductive material, just as are thefixed contacts contact terminals contact springs 8, thebase member 4, thecover 23 and thecards 5 are of insulating, preferably synthetic material,just as all other components of the relay which have neither an electrical nor a magnetic function. When thearmature 3 is in a neutral center position in which its longitudinal axis extends parallel to the coil axis, the whole relay structure is symmetrical with respect to that axis and also with respect to an axis which is perpendicular thereto and extends vertically in Fig. 1. - Fig. 7 shows a schematic cross-sectional view of an embodiment in which the
base member 4 is provided withholes 39 to permit a sealant, which is used to seal theterminals base member 4, to reach thebearing plate 25 for thearmature 3 and to serve as an adhesive for fixing thebearing plate 25 to thebase member 4.
Claims (14)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19840114797 EP0183867B1 (en) | 1984-12-05 | 1984-12-05 | Relay for high-frequency circuits |
DE8484114797T DE3476604D1 (en) | 1984-12-05 | 1984-12-05 | Relay for high-frequency circuits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19840114797 EP0183867B1 (en) | 1984-12-05 | 1984-12-05 | Relay for high-frequency circuits |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0183867A1 true EP0183867A1 (en) | 1986-06-11 |
EP0183867B1 EP0183867B1 (en) | 1989-02-01 |
Family
ID=8192332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19840114797 Expired EP0183867B1 (en) | 1984-12-05 | 1984-12-05 | Relay for high-frequency circuits |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0183867B1 (en) |
DE (1) | DE3476604D1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0361442A2 (en) * | 1988-09-28 | 1990-04-04 | Anritsu Corporation | Relay device for switching radio frequency signal |
EP1103997A2 (en) * | 1999-11-25 | 2001-05-30 | Matsushita Electric Works, Ltd. | High frequency relay |
EP2394285A2 (en) * | 2009-02-04 | 2011-12-14 | Clodi L.L.C. | Electromagnetic relay assembly |
TWI662576B (en) * | 2017-03-13 | 2019-06-11 | 日商歐姆龍股份有限公司 | High frequency relay |
CN109997209A (en) * | 2017-02-28 | 2019-07-09 | 欧姆龙株式会社 | Electromagnetic relay and intelligence instrument |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993971A (en) * | 1974-05-15 | 1976-11-23 | Matsushita Electric Works, Ltd. | Electromagnetic relay |
EP0034811A1 (en) * | 1980-02-25 | 1981-09-02 | Siemens Aktiengesellschaft | Polarized magnet system |
EP0124109A2 (en) * | 1983-04-28 | 1984-11-07 | Omron Tateisi Electronics Co. | Electromagnetic relay with symmetric reaction |
-
1984
- 1984-12-05 EP EP19840114797 patent/EP0183867B1/en not_active Expired
- 1984-12-05 DE DE8484114797T patent/DE3476604D1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3993971A (en) * | 1974-05-15 | 1976-11-23 | Matsushita Electric Works, Ltd. | Electromagnetic relay |
EP0034811A1 (en) * | 1980-02-25 | 1981-09-02 | Siemens Aktiengesellschaft | Polarized magnet system |
EP0124109A2 (en) * | 1983-04-28 | 1984-11-07 | Omron Tateisi Electronics Co. | Electromagnetic relay with symmetric reaction |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0361442A2 (en) * | 1988-09-28 | 1990-04-04 | Anritsu Corporation | Relay device for switching radio frequency signal |
EP0361442A3 (en) * | 1988-09-28 | 1991-11-27 | Anritsu Corporation | Relay device for switching radio frequency signal |
EP1103997A2 (en) * | 1999-11-25 | 2001-05-30 | Matsushita Electric Works, Ltd. | High frequency relay |
EP1103997A3 (en) * | 1999-11-25 | 2003-03-19 | Matsushita Electric Works, Ltd. | High frequency relay |
EP2394285A2 (en) * | 2009-02-04 | 2011-12-14 | Clodi L.L.C. | Electromagnetic relay assembly |
EP2394285A4 (en) * | 2009-02-04 | 2014-04-09 | Clodi L L C | Electromagnetic relay assembly |
CN109997209A (en) * | 2017-02-28 | 2019-07-09 | 欧姆龙株式会社 | Electromagnetic relay and intelligence instrument |
CN109997209B (en) * | 2017-02-28 | 2020-12-01 | 欧姆龙株式会社 | Electromagnetic relay and intelligent instrument |
TWI662576B (en) * | 2017-03-13 | 2019-06-11 | 日商歐姆龍股份有限公司 | High frequency relay |
Also Published As
Publication number | Publication date |
---|---|
EP0183867B1 (en) | 1989-02-01 |
DE3476604D1 (en) | 1989-03-09 |
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