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EP0022953A1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
EP0022953A1
EP0022953A1 EP80103714A EP80103714A EP0022953A1 EP 0022953 A1 EP0022953 A1 EP 0022953A1 EP 80103714 A EP80103714 A EP 80103714A EP 80103714 A EP80103714 A EP 80103714A EP 0022953 A1 EP0022953 A1 EP 0022953A1
Authority
EP
European Patent Office
Prior art keywords
contact
armature
spring
webs
electromagnetic relay
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
Application number
EP80103714A
Other languages
German (de)
English (en)
Other versions
EP0022953B2 (fr
EP0022953B1 (fr
Inventor
Kenji Ono
Kazuhiro Nobutoki
Hans Sauer
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.)
Sds-Relais AG Te Deisenhofen Bondsrepubliek Duits
Original Assignee
Matsushita Electric Works Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=14037671&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0022953(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to AT80103714T priority Critical patent/ATE7182T1/de
Publication of EP0022953A1 publication Critical patent/EP0022953A1/fr
Application granted granted Critical
Publication of EP0022953B1 publication Critical patent/EP0022953B1/fr
Publication of EP0022953B2 publication Critical patent/EP0022953B2/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding

Definitions

  • the invention relates to an electromagnetic relay with an armature block, which contains a pair of armature webs with an interposed permanent magnet, which magnetizes the armature webs in opposite directions, with a substantially U-shaped yoke with projecting ends, each in an air gap between the opposite ends the armature webs are arranged, which extend beyond the sections of the armature webs that are in contact with the permanent magnet, with a coil that can be connected to a control source for excitation of the relay and with a bearing device for the armature block, such that the armature block is optionally in the direction of the projecting ends of the yoke is movable.
  • a relay of this type has the structure shown in Fig. 17 and is e.g. described in DE-AS 24 54 967. It has an armature block h with a pair of armature webs e, d which are arranged parallel to one another, in front of and behind projecting ends c of a yoke b which carries a coil winding a.
  • a permanent magnet f is arranged between the anchor webs e, d.
  • the anchor block is substantially journal-supported in the center of the anchor webs e, d by means of a round axis i in a bore j.
  • such an anchor block is generally carried out in such a way that the permanent magnet in a one-piece pressed part in the middle between parts is arranged, which serve as anchor bars e, d.
  • the influence of the heat causes a change in the distance between the anchor webs, which changes the path of the anchor webs relative to the yoke.
  • the actuating part for the contact spring is molded onto the armature block.
  • This design measure is chosen for this relay because large contact forces and a high degree of self-cleaning effect are required in order to achieve high switching loads and high resistance to contact welding. For this reason, when the contact is selected, contact is made by bending the contact springs.
  • the armature block can move without additional precautions even if one of the contacts is welded and, regardless of the defect, can also close the other contact, which can create further problems in the circuit.
  • one of the contacts makes contact by deflecting the spring, while the other contact is forcibly lifted off.
  • the load capacity of the contacts is unequal, which is due to the difference in the force stored in the springs from the permanent magnetic attraction. Therefore, it is difficult to ensure a sufficiently high sensitivity with such a construction.
  • the bearing device has a resilient arm which extends away from the anchor block perpendicular to its axis of rotation and is attached to its more distant end facing away from the anchor.
  • the frame-like part which holds a pair of anchor bars and a permanent magnet in the middle, as well as the flexible arm, which can bend perpendicular to the direction of rotation of the anchor bars, creates a unit that makes it easy to set up the relay.
  • the flexible arm is fixed in a bearing of the relay body. This arrangement requires neither a journal nor a hole in the anchor block and therefore does not require any special precision in order to achieve sufficient accuracy for the axis of rotation.
  • an advantageous embodiment of the invention can consist in the shape of one of the anchor webs, the actuating pieces and the flexible arm, which ensures the rotatable mounting of the anchor, in order to ensure an exact anchor air gap.
  • cranks are provided on the surfaces of the two actuating pieces, through which the contact springs are guided in such a way that the inside of each crank encompasses the contact spring in a gap, so that both resilient contact and forced contact opening are ensured.
  • one of the two contacts is forced on one openable contact spring attached, which is provided with an auxiliary spring.
  • the auxiliary spring is designed such that it is supported on a fixed part immediately before lifting off.
  • 1 denotes a housing which consists of a base plate 2 consists of insulating material or plastic and a housing cap 3.
  • 4 with a bobbin is designated, which has a winding area 5 and two flanges 6.
  • the winding area 5 of the bobbin 4 is provided with a continuous opening 7, in which a yoke 8 is arranged such that 6 ends 8a protrude upward at the opposite flanges.
  • the coil winding C, the coil body 4 and the yoke 8 together form the electromagnetic circuit M.
  • One pole face is wider than the other.
  • a plate-shaped or cuboid permanent magnet 10 is arranged between the anchor webs 9.
  • An insulating frame 11 holds the anchor bars 9 and the permanent magnet 10 together. It has on the upper side a wall 12 along which one of the anchor webs extends, a pair of posts 13 through which one anchor web is passed, and a horizontal wall 14 which, together with the post 13, has a cavity for receiving the permanent magnet 10 forms. A projection 14a on the horizontal wall 14 serves to position the permanent magnet, receives the other armature web and encloses it with the exception of the pole faces 9a, 9b. All walls are integrally connected to the insulating frame 11.
  • One anchor web 9, which penetrates the posts 13, is designed as a thin plate in order to facilitate insertion into the mold and, at the same time, embedding.
  • the insulating frame 11 also has a resilient arm 15 projecting in the middle, which can bend in the direction T perpendicular to the direction of rotation R of the anchor webs 9 (FIG. 12).
  • the insulating frame 11 including the flexible arm 15 is made of a plastic high arc resistance shaped.
  • the arm 15 is formed from a metallic leaf spring embedded in the insulating frame 11.
  • the arm 15 can also be provided on both sides as shown in FIGS. 10 and 11. Relatively stiff synthetic resin can also be used as long as sufficient flexibility can be ensured by the thickness or shape of the arm 15.
  • the two anchor bars 9, the permanent magnet 10, the insulating frame 11 and the resilient arm 15 together form the anchor block G.
  • the base plate 2 is provided with a bearing block 16.
  • the arm 15 is tapered in cross-section in the area of its connection 15b near the insulating frame 11 and widened at its front end 15a in such a way that an air gap 16a arises in the area of the connection 15b and that its front, widened end 15a against a pair of firmly anchored side walls 17.
  • movable contact springs are designated, which are arranged on both sides of the flexible arm 15. Each of these springs lies opposite the upper wall 12 of the insulating frame 11 of the anchor block and is provided with a contact 19 at its front end. Each contact spring 18 is also fastened to an L-shaped base part 20a of a contact connection 20 with an L-shaped foot part 18a. The movable contact spring 18 engages the inner surface 22 of a bend of an operating part 21 for the purpose of a forced contact opening. With 23 a further contact connection is designated, which carries a fixed contact 24. The two contacts 19 and 24 form a contact arrangement S.
  • the base plate 2 has an upright partition 25, which is arranged as an arc protection between this contact arrangement S on the one hand and the part M of the electromagnetic circuit and the armature block G on the other.
  • the partition 25 is integrally formed on the side walls 17 of the bearing block 16.
  • a connecting pin 26 for the excitation coil C is L-shaped, its horizontal section 26a being passed through the flange 6 of the coil body 4. The contact and coil connections 20, 23 and 26 penetrate the base plate 2.
  • Fig. 15 is a schematic representation of a further preferred embodiment of the invention, which ensures a better coordination of spring force and actuating force.
  • the one of two contacts, which is denoted by 27, is closed by bending the contact spring and stands out from the fixed contact 28 serving as an abutment when there is no force from the armature 30.
  • the other contact with the contact spring 29 is forcibly opened and then closed when no force is exerted by the armature.
  • the spring 29 of the contact which is forcibly opened carries the movable contact 31 on the side facing the armature 30 and, on the other side, an auxiliary spring 32 which is supported on it and which is also fastened to the same contact connection 33.
  • the free end of the auxiliary spring 32 is not always supported on the contact spring 29 but only when the contact spring 29 is lifted off the fixed contact 28.
  • the spring force of the contact spring 29 is increased by the force of the auxiliary spring 32 at this time.
  • the resulting spring force from the deflection when contact is made, the forced contact opening and the auxiliary spring at the end of the armature movement on the side on which the contact is opened takes on an increased value until the spring force on the side at the contact opening takes place the same is the value of the spring force on the side where the contact is closed. In this way, the resulting spring force becomes the actuating force of the armature adjusted.
  • Fig. 13 shows the rest position of the relay
  • Fig. 13a shows the rest position of the relay
  • Fig. 13a shows the rest position of the relay
  • the armature block G is moved when the coil is excited over the flexible arm 15, whereby the contact arrangements S on both sides be opened and closed alternately, as indicated in (a) and (b).
  • FIG. 14 which shows another arrangement with two working contacts (FIG. 14a shows the rest position of the relay)
  • FIG. 14a shows the rest position of the relay
  • the arrangement of FIG. 13 corresponds to the construction shown in FIG. 7
  • the arrangement according to FIG. 14 corresponds to that shown in FIG. 9.
  • the relationship between the anchor block G and the elastic arm 15 is that the arm 15 is bent in a direction T perpendicular to the axis of rotation of the anchor block G in response to its rotation, as shown in FIG. If the axis of rotation is displaced from the normal position, a subsequent movement to the right or left or forwards or backwards occurs within the range of the deflection to compensate for the offset, thereby compensating for the problem of chattering or excessive play on the axis of rotation.
  • the electromagnetic relay according to the invention is designed such that the insulating frame 11, which carries the armature webs 9 and the permanent magnet 10, is integrally formed with the elastic arm 15, which can bend perpendicular to the direction of the axis of rotation of the armature webs 9 and from the bearing block 16 of the base plate 2 is held securely, any offset due to a deflection of the elastic arm 15 by the said subsequent movement is rendered ineffective.
  • This arrangement makes it unnecessary to take great care in centering to dedicate, which was necessary with conventional journal bearings.
  • the armature block G is also a unit which comprises the armature webs 9, the permanent magnet 10 and an insulating frame 11, the final assembly compared to the known relays according to the prior art, in which only one part at a time can be installed in the housing , made much more efficient.
  • the electromagnetic relay according to the invention is further characterized in that the upright partition 25 is provided in its base plate 2 in order to provide protection against arcing between the contacts. Furthermore, the common contact spring 18 is designed so that it comes into engagement with the inner surface of the offset of the actuating part 21.
  • the insulating frame 11, which carries the anchor bars 9 and the permanent magnet 10 is on its top with the wall 12, along which one of the anchor bars is arranged, the pair of posts 13, which an anchor bar passes, and the horizontal wall 14, which together with said posts 13 forms a cavity for receiving and fastening the permanent magnet.
  • the wall projection 14a which extends from the horizontal wall and together with this forms a positioning segment for the permanent magnet, which is adapted to and covers the other armature web 9, the pole faces 9a and 9b of which alone remain uncovered. All the walls mentioned are integrally connected to the frame part.
  • one of the contact springs is provided with a contact that springs through when contact is made, while the other contact spring carries a contact that is forced to open.
  • the first-mentioned contact spring is provided with an auxiliary spring which is supported on the surface of the contact spring facing away from the moving contact, as a result of which the advantages mentioned are achieved.
  • the flexible web 15 like the actuating pieces 21a, 21b, 21a ', 21b', is molded from the insulating material jacket or the insulating material frame 11 of the armature.
  • the insulating material jacket also fixes in the armature at least one permanent magnet (not shown) and armature webs 9, which interact with the yoke ends 8a of the coil core.
  • the actuating pieces 21a, 21b and 21a ', 21b' shown in section are connected to one another on their upper side, that is to say they grip around the contact springs 18 and 18 '.
  • the right contact 19, 24 is closed, the left contact 19 ', 24' is open.
  • the spherical actuating piece 21b presses against the contact spring 18, while the opposite actuating piece 21a is lifted off the latter.
  • the contact spring 18 experiences considerable deflection.
  • the contact opening at the left contact point 19 ', 24' takes place through the action of the actuating piece 21a 'on the contact spring 18', the actuating piece 21b 'being lifted off the contact spring.
  • the contact-near section 21c, 21c 'of the actuating piece 21a, 21a' engages with the contact spring 18 ', so that only the short resilient length L 3 , L 3 ' is effective up to the contact point.
  • the point of contact on the contact spring moves with increasing opening of the contact 19 ', 24', since the surface of the actuating piece 21a 'facing the contact spring 18' runs parallel to the longitudinal axis of the armature 8, from the portion near the contact to the non-contact portion 21d 'of the actuating piece 21a' .
  • the permanent magnetic attraction force can also be stored well in the contact springs 18, 18 '. Due to the slight deflection of the contact springs 18, 18 'at the contact opening, however, in the case of contact welding, the welded contact is either torn open and the other is actuated properly - or, if the weld cannot be broken, the other contact is also no longer actuated.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Surgical Instruments (AREA)
  • Valve Device For Special Equipments (AREA)
  • Cookers (AREA)
EP80103714A 1979-07-18 1980-06-30 Relais électromagnétique Expired EP0022953B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103714T ATE7182T1 (de) 1979-07-18 1980-06-30 Elektromagnetisches relais.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP91836/79 1979-07-18
JP9183679A JPS5615522A (en) 1979-07-18 1979-07-18 Electromagnetic relay

Publications (3)

Publication Number Publication Date
EP0022953A1 true EP0022953A1 (fr) 1981-01-28
EP0022953B1 EP0022953B1 (fr) 1984-04-18
EP0022953B2 EP0022953B2 (fr) 1987-06-24

Family

ID=14037671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103714A Expired EP0022953B2 (fr) 1979-07-18 1980-06-30 Relais électromagnétique

Country Status (6)

Country Link
US (1) US4339735A (fr)
EP (1) EP0022953B2 (fr)
JP (1) JPS5615522A (fr)
AT (1) ATE7182T1 (fr)
CA (1) CA1139806A (fr)
DE (1) DE3067528D1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034811A1 (fr) * 1980-02-25 1981-09-02 Siemens Aktiengesellschaft Système d'aimant polarisé
EP0072976A1 (fr) * 1981-08-14 1983-03-02 Siemens Aktiengesellschaft Relais électromagnétique polarisé
EP0091688A1 (fr) * 1982-04-14 1983-10-19 Siemens Aktiengesellschaft Relais électromagnétique
EP0091687A1 (fr) * 1982-04-14 1983-10-19 Siemens Aktiengesellschaft Relais électromagnétique
DE3223867A1 (de) * 1982-06-25 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Polarisiertes relais
EP0168058A2 (fr) * 1984-07-13 1986-01-15 EURO-Matsushita Electric Works Aktiengesellschaft Relais de sécurité
EP0186160A2 (fr) * 1984-12-22 1986-07-02 EURO-Matsushita Electric Works Aktiengesellschaft Relais électromagnétique
EP0203515A2 (fr) * 1985-05-29 1986-12-03 EURO-Matsushita Electric Works Aktiengesellschaft Relais électromagnétique
EP0204199A2 (fr) * 1985-05-20 1986-12-10 EURO-Matsushita Electric Works Aktiengesellschaft Relais électromagnétique
EP0250644A2 (fr) * 1986-06-23 1988-01-07 Tektronix, Inc. Appareil de commutation
EP0361638A2 (fr) * 1988-09-28 1990-04-04 Com Dev Ltd. Interrupteurs pour micro-ondes de configuration C et S

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135171A1 (de) * 1981-09-04 1983-03-17 Siemens AG, 1000 Berlin und 8000 München Polarisiertes elektromagnetisches relais
DE9016328U1 (de) * 1990-11-30 1992-04-02 EURO-Matsushita Electric Works AG, 8150 Holzkirchen Elektromagnetisches Relais
JP2018170241A (ja) * 2017-03-30 2018-11-01 富士通コンポーネント株式会社 電磁継電器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943713C (de) * 1952-12-17 1956-06-01 Spoorweg Sein Ind N V Ankerhatlerung fuer polarisiertes Relais
DE1217500B (de) * 1962-01-16 1966-05-26 Fujitsu Ltd Gepoltes Kleinrelais
DE2454967B2 (de) * 1974-05-15 1976-12-30 Gepoltes elektromagnetisches relais
DE2830390A1 (de) * 1978-07-11 1980-01-24 Gruner Gmbh & Co Relaisfabrik Relais
EP0013991A1 (fr) * 1979-01-25 1980-08-06 EURO-Matsushita Electric Works Aktiengesellschaft Dispositif à ressorts de contact pour relais électromagnétiques polarisés

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960583A (en) * 1958-04-30 1960-11-15 Sigma Instruments Inc Sensitive relay
US3499463A (en) * 1967-11-20 1970-03-10 Sperry Rand Ltd Electrohydraulic servo valve
US4272745A (en) * 1978-06-30 1981-06-09 Omron Tateisi Electronics Co. Electromagnetic relay

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943713C (de) * 1952-12-17 1956-06-01 Spoorweg Sein Ind N V Ankerhatlerung fuer polarisiertes Relais
DE1217500B (de) * 1962-01-16 1966-05-26 Fujitsu Ltd Gepoltes Kleinrelais
DE2454967B2 (de) * 1974-05-15 1976-12-30 Gepoltes elektromagnetisches relais
DE2830390A1 (de) * 1978-07-11 1980-01-24 Gruner Gmbh & Co Relaisfabrik Relais
EP0013991A1 (fr) * 1979-01-25 1980-08-06 EURO-Matsushita Electric Works Aktiengesellschaft Dispositif à ressorts de contact pour relais électromagnétiques polarisés

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034811A1 (fr) * 1980-02-25 1981-09-02 Siemens Aktiengesellschaft Système d'aimant polarisé
EP0072976A1 (fr) * 1981-08-14 1983-03-02 Siemens Aktiengesellschaft Relais électromagnétique polarisé
EP0091688A1 (fr) * 1982-04-14 1983-10-19 Siemens Aktiengesellschaft Relais électromagnétique
EP0091687A1 (fr) * 1982-04-14 1983-10-19 Siemens Aktiengesellschaft Relais électromagnétique
DE3223867A1 (de) * 1982-06-25 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Polarisiertes relais
EP0168058A3 (en) * 1984-07-13 1988-08-17 Sds-Relais Ag Safety relay
EP0168058A2 (fr) * 1984-07-13 1986-01-15 EURO-Matsushita Electric Works Aktiengesellschaft Relais de sécurité
EP0186160A2 (fr) * 1984-12-22 1986-07-02 EURO-Matsushita Electric Works Aktiengesellschaft Relais électromagnétique
EP0186160A3 (en) * 1984-12-22 1988-08-24 Sds-Relais Ag Electromagnetic relay
EP0204199A2 (fr) * 1985-05-20 1986-12-10 EURO-Matsushita Electric Works Aktiengesellschaft Relais électromagnétique
EP0204199A3 (en) * 1985-05-20 1989-03-08 Sds-Relais Ag Electromagnetic relay
EP0203515A2 (fr) * 1985-05-29 1986-12-03 EURO-Matsushita Electric Works Aktiengesellschaft Relais électromagnétique
EP0203515A3 (en) * 1985-05-29 1989-03-22 Sds-Relais Ag Electromagnetic relay
EP0250644A2 (fr) * 1986-06-23 1988-01-07 Tektronix, Inc. Appareil de commutation
EP0250644A3 (fr) * 1986-06-23 1989-12-13 Tektronix, Inc. Appareil de commutation
EP0361638A2 (fr) * 1988-09-28 1990-04-04 Com Dev Ltd. Interrupteurs pour micro-ondes de configuration C et S
EP0361638A3 (fr) * 1988-09-28 1991-10-02 Com Dev Ltd. Interrupteurs pour micro-ondes de configuration C et S

Also Published As

Publication number Publication date
DE3067528D1 (en) 1984-05-24
US4339735A (en) 1982-07-13
EP0022953B2 (fr) 1987-06-24
CA1139806A (fr) 1983-01-18
JPS5615522A (en) 1981-02-14
ATE7182T1 (de) 1984-05-15
EP0022953B1 (fr) 1984-04-18

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