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WO2018159060A1 - Relais électromagnétique et compteur intelligent - Google Patents

Relais électromagnétique et compteur intelligent Download PDF

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Publication number
WO2018159060A1
WO2018159060A1 PCT/JP2017/044582 JP2017044582W WO2018159060A1 WO 2018159060 A1 WO2018159060 A1 WO 2018159060A1 JP 2017044582 W JP2017044582 W JP 2017044582W WO 2018159060 A1 WO2018159060 A1 WO 2018159060A1
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WO
WIPO (PCT)
Prior art keywords
housing
yoke
movable contact
contact
iron piece
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.)
Ceased
Application number
PCT/JP2017/044582
Other languages
English (en)
Japanese (ja)
Inventor
裕二 小材
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.)
Omron Corp
Original Assignee
Omron Corp
Omron Tateisi Electronics Co
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 Omron Corp, Omron Tateisi Electronics Co filed Critical Omron Corp
Priority to CN201780072572.2A priority Critical patent/CN109997209B/zh
Publication of WO2018159060A1 publication Critical patent/WO2018159060A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H01H50/02—Bases; Casings; Covers
    • 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

Definitions

  • This disclosure relates to an electromagnetic relay and a smart meter using the same.
  • the electromagnetic relay disclosed in Patent Document 1 includes a rectangular box-shaped housing having an accommodating portion therein.
  • the accommodating portion includes a fixed contact, a movable contact piece having a movable contact arranged so as to be able to contact and separate from the fixed contact, an electromagnet portion whose polarity is reversed depending on the direction of the supplied current, and the polarity of the electromagnet portion.
  • a rotating block that rotates in different directions according to the position, and a movable member connected to the rotating block and the movable contact piece are arranged.
  • a permanent magnet is provided on the rotating block, and the rotating block is rotated by a magnetic interaction between the permanent magnet and the electromagnet portion.
  • the on / off state between the fixed contact and the movable contact may be forcibly changed by applying a strong magnetic field (hereinafter referred to as an external magnetic field) from the outside.
  • an external magnetic field a strong magnetic field
  • the housing is covered with a shielding case made of a magnetic material (for example, iron), and the housing portion inside the housing is influenced by the external magnetic field. It may be possible not to receive it.
  • the electromagnetic relay by covering the electromagnetic relay with a shielding case, it is possible to prevent or reduce the inflow of an external magnetic field into the housing portion, but the magnetic body constituting the shielding case is formed by the permanent magnet and the electromagnet portion of the rotating block. This may affect the magnetic interaction and may greatly increase the operating voltage required to rotate the rotating block.
  • An object of the present disclosure is to provide an electromagnetic relay that can reduce the influence of an external magnetic field while suppressing an increase in the operating voltage of the rotating block, and a smart meter using the electromagnetic relay.
  • a box-shaped insulative housing having a receiving portion therein;
  • a plate-shaped fixed contact side terminal fixed to the housing, extending from the outside of the housing to the housing portion, and having a fixed contact located in the housing portion;
  • a plate-like movable contact side terminal fixed to the housing, extending from the outside of the housing to the accommodating portion, and arranged in the housing in parallel with the fixed contact side terminal;
  • the movable contact is disposed in the accommodating portion and electrically connected to the movable contact side terminal, and has a movable contact facing the fixed contact, and the movable contact is elastically deformable so as to be able to contact and open the fixed contact.
  • a rotation block that is disposed in the housing portion and rotates about a rotation axis with respect to the housing in a different direction according to a direction of a current supplied to the electromagnet portion;
  • a movable member that moves in accordance with the rotational direction of the rotational block to bring the movable contact into contact with or separate from the fixed contact;
  • a magnetic shield member provided on at least one of a pair of opposed surfaces orthogonal to the rotational axis of the housing;
  • the electromagnet part is A first yoke that is disposed between the movable contact piece and the electromagnet portion, and has a rotation block arrangement space in which front end surfaces face each other and the rotation block is disposed between the front end surfaces; Having a second yoke,
  • the pivot block is A first iron piece disposed on one side of the rotating block such that a first end protrudes toward the first yok
  • An end portion has a second gap between the movable contact and the second yoke when the movable contact is in contact with the fixed contact, and the first end portion of the second iron piece is connected to the movable contact.
  • a third gap is provided between the first yoke and the first yoke when contacting the fixed contact, and the second end of the second iron piece has the movable contact separated from the fixed contact.
  • Sometimes there is a fourth gap between the second yoke and The magnetic shield member is Having a magnetic part and a non-magnetic part, The non-magnetic body portion is disposed in at least a part of a portion covering at least one of the first to fourth gaps of the housing in the extending direction of the rotation shaft.
  • a smart meter according to one embodiment of the present disclosure is provided.
  • the electromagnetic relay is provided.
  • the magnetic shield member is provided on at least one of the pair of opposed surfaces orthogonal to the rotation axis of the rotation block of the housing. Therefore, the influence of the external magnetic field with respect to the accommodating part in a housing can be reduced.
  • the magnetic shield member has a magnetic part and a non-magnetic part, and the non-magnetic part is a part that is easily affected by the magnetic field generated inside the housing. It arrange
  • the gap between the yoke of the electromagnet part and the iron piece of the rotating block can be reduced from the magnetic part of the magnetic shield member as compared with the electromagnetic relay provided with the magnetic shield member not provided with the nonmagnetic part. You can keep away. Thereby, the influence which the magnetic body part of a magnetic shield member has on the magnetic interaction of the permanent magnet and electromagnet part of a rotation block is reduced, and the increase in the operating voltage required for rotation of a rotation block can be suppressed.
  • the electromagnetic relay can reduce the influence of the external magnetic field while suppressing an increase in the operating voltage of the rotating block. As a result, power can be measured with high accuracy.
  • the top view which shows the state which removed the cover of the electromagnetic relay of FIG. The top view for demonstrating arrangement
  • an electromagnetic relay 1 includes a box-shaped insulating housing 10, conductive plate-like fixed contact side terminals 20 each fixed to the housing 10, and And a plate-like movable contact side terminal 30 having conductivity.
  • the housing 10 is composed of a box-shaped base 11 and a plate-shaped cover 12 as shown in FIG. 1, and has a housing 13 inside thereof as shown in FIG.
  • a magnetic shield member 40 is provided on the upper surface of the cover 12 of the housing 10.
  • the magnetic shield member 40 is fixed to the cover 12 with, for example, an adhesive.
  • the fixed contact side terminal 20 extends from the outside of the housing 10 to the accommodating portion 13 along the first side wall 111 of the first side wall 111 and the second side wall 112 facing each other in the longitudinal direction of the base 11.
  • the fixed contact side terminal 20 includes a third side wall 113 and a fourth side wall 114 of which the middle portion is opposed to the short side direction of the housing 10 so that the plate thickness direction thereof substantially coincides with the longitudinal direction of the housing 10. 3 fixed to the side wall 113.
  • a fixed contact 21 is fixed to a surface of the fixed contact side terminal 20 in the plate thickness direction in the accommodating portion 13.
  • the fixed contact 21 is disposed on the surface of the fixed contact side terminal 20 closer to the second side wall 112 in the plate thickness direction (that is, the left surface in FIG. 2).
  • the movable contact side terminal 30 is arranged in parallel with the fixed contact side terminal 20 with an interval in the longitudinal direction of the base 11, and is provided electrically independent of the fixed contact side terminal 20.
  • the movable contact side terminal 30 is fixed to the third side wall 113, which is the same as the fixed contact side terminal 20, so that the plate thickness direction substantially coincides with the longitudinal direction of the housing 10.
  • One end 301 in the longitudinal direction located in the accommodating portion 13 of the movable contact side terminal 30 is fixed to the fourth side wall 114.
  • the fixed contact side terminal 20 and the movable contact side terminal 30 extend in the same direction (that is, the upper side in FIG. 2) from the third side wall 113 of the housing 10.
  • the movable contact piece 32 is fixed to one end 301 in the longitudinal direction of the movable contact side terminal 30.
  • the movable contact piece 32 is composed of a laminate in which two conductive and elastically deformable rectangular plate members are stacked in the plate thickness direction.
  • a movable contact 33 is fixed to the plate surface at the other end in the longitudinal direction of the movable contact piece 32.
  • the movable contact 33 is disposed so as to face the fixed contact 21, and is brought into contact with or separated from the fixed contact 21 when the movable contact piece 32 is elastically deformed.
  • a curved portion 34 protruding in a U shape toward the fixed contact side terminal 20 is provided.
  • the curved portion 34 can absorb and relieve the amount of bending of the movable contact piece 32 when the movable contact piece 32 is elastically deformed, and can ensure smooth operation characteristics.
  • the electromagnetic relay 1 is provided with the electromagnet part 50, the rotation block 60, and the movable member 70, as shown in FIG.
  • the electromagnet unit 50, the rotation block 60, and the movable member 70 are accommodated in the accommodating portion 13 of the housing 10.
  • the electromagnet part 50 is arrange
  • the electromagnet part 50 includes a coil 501 wound around a winding center axis CL extending in the short direction of the base 11 (that is, the vertical direction in FIG. 2), and an electromagnet part 50 extending from the winding center axis CL.
  • a plate-like first yoke 51 and a plate-like second yoke 52 are provided respectively extending along the outer surface of the coil 501 from both ends in the axial direction.
  • the first yoke 51 and the second yoke 52 are disposed between the movable contact piece 32 and the electromagnet unit 50.
  • the first yoke 51 includes a connection part 511 extending from the upper end in the axial direction of the electromagnet part 50 along the third side wall 113 of the accommodating part 13, and a fourth side wall 114 extending from the tip of the connection part 511 along the second side wall 112. It is comprised with the adsorption
  • the second yoke 52 includes a connection part 521 extending from the lower end in the axial direction of the electromagnet part 50 along the third side wall 113 of the housing part 13, and a second side wall 113 extending from the tip of the connection part 521 along the second side wall 112. It is comprised with the adsorption
  • the suction part 512 of the first yoke 51 and the suction part 522 of the second yoke 52 are along the second side wall 112 in a plan view along the height direction of the housing 10 (that is, the paper surface penetration direction in FIG. 2).
  • the extending center line is arranged on the same virtual straight line L.
  • the front end surface of the suction portion 512 of the first yoke 51 and the front end surface of the suction portion 522 of the second yoke 52 are opposed to each other, and there is a rotation block arrangement space 54 in which the rotation block 60 can be arranged. Is provided.
  • two coil terminals 53 are provided at the lower end of the electromagnet unit 50, and currents in two different directions can be supplied to the electromagnet unit 50 via the coil terminals 53.
  • the rotating block 60 includes a block housing 61, a permanent magnet 63 provided inside the block housing 61, and plate-shaped first iron pieces fixed to the block housing 61 so as to face each other with the permanent magnet 63 interposed therebetween. 64 and a plate-like second iron piece 65.
  • the rotation block 60 has a rotation shaft 62 that extends in the height direction of the housing 10 (that is, the paper surface penetration direction in FIG. 2) in the block housing 61.
  • the rotation shaft 62 is located on an imaginary straight line L extending in the extending direction of the suction portion 512 of the first yoke 51 and the suction portion 522 of the second yoke 52, and rotates around the base 11 and the support plate 67 of the housing 10. It is supported movably.
  • the support plate 67 has a plate shape and extends in the vertical direction of FIG. 2, and has an upper end portion on the suction portion 512 of the first yoke 51 so that one plate surface faces the bottom surface of the base 11. Lower end portions are respectively attached to the suction portions 522 of the second yoke 52.
  • the first iron piece 64 is located on one side of the rotating block 60, that is, on the left side of the suction portion 512 of the first yoke 51 and the suction portion 522 of the second yoke 52 (that is, the second side wall 112 side).
  • the first end 641 protrudes toward the first yoke 51 and the second end 642 protrudes toward the second yoke 52.
  • the second iron piece 65 is located on the other side of the rotation block 60, that is, on the right side of the suction portion 512 of the first yoke 51 and the suction portion 522 of the second yoke 52 (that is, the first side wall). 111), the first end 651 protrudes toward the first yoke 51, and the second end 652 protrudes toward the second yoke 52.
  • Each of the first iron piece 64 and the second iron piece 65 has one plate surface facing each other, and an end portion (an example of a first end portion) on the upper side (that is, the third side wall 113 side) of the facing plate surface. ) 641 and 651 can contact the suction portion 512 of the first yoke 51, and end portions (an example of the second end portion) 642 and 652 on the lower side of the opposing plate surface (that is, the fourth side wall 114 side) It arrange
  • an arm portion 66 connected to the movable member 70 is provided on the side portion of the rotating block 60 on the first side wall 111 side.
  • the movable member 70 can move in the contact / separation direction (that is, the left-right direction in FIG. 2) in which the movable contact 33 contacts or separates from the fixed contact 21, and is third in the longitudinal direction of the movable contact piece 32. It is connected to the end on the side wall 113 side (that is, the upper end in FIG. 2). That is, the movable member 70 is moved by the rotation of the rotation block 60, and the movable contact 33 contacts or separates the end on the third side wall 113 side in the longitudinal direction of the movable contact piece 32 with respect to the fixed contact 21. In the direction of contact / separation (that is, the left-right direction in FIG. 2).
  • a current in a predetermined direction is supplied to the electromagnet portion 50, and the state shown in FIG. 2, that is, the lower end portion of the first iron piece 64 contacts the attracting portion 522 of the second yoke 52, and the upper end portion of the second iron piece 65 is the first one.
  • the rotation block 60 in a state of being in contact with the suction portion 512 of the one yoke 51 is rotated clockwise.
  • the arm portion 66 is also rotated clockwise by the rotation of the rotation block 60, and the movable member 70 is moved to the right side.
  • the electromagnetic relay 1 changes from the return state in which the movable contact 33 is separated from the fixed contact 21 to the operation state in which the movable contact 33 is in contact with the fixed contact 21.
  • an electric current in a direction different from a predetermined direction is supplied to the electromagnet unit 50, the upper end portion of the first iron piece 64 contacts the attracting portion 512 of the first yoke 51, and the lower end portion of the second iron piece 65 is the second yoke.
  • the rotation block 60 in a state of being in contact with the suction part 522 is rotated counterclockwise.
  • the arm portion 66 is also rotated counterclockwise by the rotation of the rotation block 60, and the movable member 70 is moved to the left side.
  • the electromagnetic relay 1 changes from an operating state in which the movable contact 33 is in contact with the fixed contact 21 to a return state in which the movable contact 33 is separated from the fixed contact 21.
  • the rotation block 60 can be rotated in the contact direction in which the movable contact 33 contacts the fixed contact 21 and in the separation direction in which the movable contact 33 is separated from the fixed contact 21, and is supplied to the electromagnet unit 50. It rotates in different directions depending on the direction of current.
  • the first end 641 of the first iron piece 64 has a first gap S1 between the first yoke 51 and the first yoke 51 when the movable contact 33 is separated from the fixed contact 21, as shown in FIG.
  • the second end 642 of the first iron piece 64 has a second gap S 2 between the second yoke 52 and the second yoke 52, as shown in FIG. is doing.
  • the first end 651 of the second iron piece 65 has a third gap S 3 between the first yoke 651 and the first yoke 51, as shown in FIG.
  • the second end 652 of the second iron piece 65 has a fourth gap S4 between the second yoke 52 and the second yoke 52 as shown in FIG. 3 when the movable contact 33 is separated from the fixed contact 21. is doing.
  • the magnetic shield member 40 includes a magnetic body portion 41 and an exposed portion 42 that is an example of a nonmagnetic body portion provided in the magnetic body portion 41.
  • the exposed portion 42 includes a first opening 43, a second opening 44, a third opening 45, and a fourth opening 46 each having a rectangular shape when viewed from the height direction of the housing 10.
  • the first opening 43 is disposed in a portion covering the first gap S1 of the cover 12 of the housing 10, and this portion is exposed to the outside of the electromagnetic relay 1.
  • the second opening 44 is disposed in a portion covering the second gap S ⁇ b> 2 of the cover 12 of the housing 10, and this portion is exposed to the outside of the electromagnetic relay 1.
  • the third opening 45 is disposed in a portion covering the third gap S ⁇ b> 3 of the cover 12 of the housing 10, and this portion is exposed to the outside of the electromagnetic relay 1.
  • the fourth opening 46 is disposed in a portion that covers the fourth gap S ⁇ b> 4 of the cover 12 of the housing 10, and this portion is exposed to the outside of the electromagnetic relay 1.
  • the exposed portion 42 is a housing that covers the gaps S1, S2, S3, S4 between the first yoke piece 51 and the second yoke 52 of the electromagnet portion 50 and the first iron piece 64 and the second iron piece 65 of the rotating block 60.
  • 10 cover 12 portions are exposed to the outside of the electromagnetic relay 1.
  • the electromagnetic relay 1 includes the magnetic shield member 40 provided on one of the pair of opposed surfaces orthogonal to the rotation shaft 62 of the rotation block 60 of the housing 10. Thereby, the influence of the external magnetic field with respect to the accommodating part 13 in the housing 10 can be reduced.
  • the magnetic shield member 40 has a magnetic body portion 41 and four openings 43, 44, 45, 46 provided in the magnetic body portion 41, and each of the openings 43, 44, 45, 46 is
  • the housing 10 covers the gaps S1, S2, S3, S4 between the yokes 51, 52 of the electromagnet portion 50 and the iron pieces 64, 65 of the rotating block 60 in the extending direction of the rotating shaft 62 of the rotating block 60.
  • the cover 12 is disposed on each part.
  • the electromagnetic relay 1 can reduce the influence of an external magnetic field on the housing portion 13 of the housing 10 while suppressing an increase in the operating voltage of the rotating block 60.
  • the electromagnetic relay 1 can be applied to, for example, a smart meter.
  • the smart meter which can reduce the influence of an external magnetic field can be provided, suppressing the increase in the operating voltage of a rotation block.
  • each opening part 43, 44, 45, 46 of the magnetic shielding member 40 should just be arrange
  • the opening of the magnetic shield member 40 may be provided in at least one of the cover 12 portions of the housing 10 that covers the four gaps S1, S2, S3, and S4.
  • the exposed portion 42 of the housing 10 covers the gaps S1, S2, S3, S4 between the first yoke 51 and the second yoke 52 of the electromagnet portion 50 and the first iron piece 64 and the second iron piece 65 of the rotating block 60. It is not restricted to the case where it is comprised by four opening part 43,44,45,46 which exposes the part of the cover 12 to the exterior of the electromagnetic relay 1.
  • FIG. 5 the gaps S1, S2, S3, S4 between the yokes 51, 52 of the electromagnet portion 50 and the iron pieces 64, 65 of the rotating block 60 (in FIG. 5, only the gap S1 and the gap S4 are shown).
  • a notch 47 that exposes the cover 12 portion of the housing 10 that covers the first yoke 51 and the second yoke 52 to the outside of the electromagnetic relay 1,
  • the exposed portion 42 may be configured.
  • the exposed portion 42 is constituted by the notch portion 47, so that the magnetic body portion 41 constituting the magnetic shield member 40 gives a magnetic interaction between the permanent magnet 63 and the electromagnet portion 50 of the rotating block 60.
  • the influence is further reduced, and an increase in operating voltage necessary for the rotation of the rotation block 60 can be reliably suppressed.
  • the notch 47 is at least a part of the cover 12 of the housing 10 that covers at least the vicinity of the tip surface of the suction portion 512 of the first yoke 51 and at least the vicinity of the tip surface of the suction portion 522 of the second yoke 52. It suffices if they are arranged.
  • the notch 47 covers at least the portion of the cover 10 of the housing 10 that covers at least the vicinity of the tip surface of the suction portion 512 of the first yoke 51 and at least the vicinity of the tip surface of the suction portion 522 of the second yoke 52. What is necessary is just to be arrange
  • the gaps S1, S2, S3, S4 between the yokes 51, 52 of the electromagnet portion 50 and the iron pieces 64, 65 of the rotating block 60 (in FIG. 6, only the gap S1 and the gap S4 are shown).
  • the exposed portion 42 may be constituted by a notch portion 147 that exposes the portion to the outside of the electromagnetic relay 1.
  • the exposed portion 42 is formed by the notch portion 147, so that the magnetic body portion 41 constituting the magnetic shield member 40 gives a magnetic interaction between the permanent magnet 63 and the electromagnet portion 50 of the rotating block 60.
  • the influence is further reduced, and an increase in operating voltage necessary for the rotation of the rotation block 60 can be reliably suppressed.
  • the notch 147 is movable at the movable region 48 of the first end 641 of the first iron piece 64, the movable region 48 of the second end 642 of the first iron piece 64, and the first end 651 of the second iron piece 65. What is necessary is just to be arrange
  • the exposed portion 42 has at least a portion of the cover 12 of the housing 10 that covers the gaps S1, S2, S3, S4 between the yokes 51, 52 of the electromagnet portion 50 and the iron pieces 64, 65 of the rotating block 60 at least electromagnetically. What is necessary is just to be comprised so that it may be exposed to the exterior of the relay 1.
  • the portion of the cover 12 of the housing 10 that covers the gaps S1, S2, S3, S4 between the yokes 51, 52 of the electromagnet section 50 and the iron pieces 64, 65 of the rotating block 60 is defined as the first portion.
  • 52 covers the movable region of the movable contact 33 as the second portion
  • the cover 12 of the housing 10 covering the entire movable region 48 of the iron pieces 64, 65 as the third portion.
  • a portion of the cover 12 of the tenth portion is a fourth portion
  • a portion of the cover 12 of the housing 10 that covers the fixed contact 21 is a fifth portion.
  • the exposed portion 42 can be configured such that the first portion and the third portion are exposed to the outside of the electromagnetic relay 1, and the first portion, the fourth portion, and the fifth portion are the electromagnetic relay 1. It can also be configured to be exposed to the outside.
  • the magnetic shield member 40 is not limited to the case where it is provided on the upper surface of the cover 12 of the housing 10 (that is, one of the surfaces facing the height direction of the housing 10).
  • magnetic shield members 40 may be provided on both surfaces facing the height direction of the housing 10 (that is, the vertical direction in FIG. 7).
  • a magnetic shield member 40 is provided on each of a pair of opposing surfaces (that is, an upper surface and a bottom surface) facing the height direction of the housing 10 (that is, the vertical direction in FIG. 8).
  • the auxiliary magnetic shield member 140 may be provided on one of the surfaces (that is, the side surfaces) orthogonal to (that is, intersecting) the pair of facing surfaces that are opposed to each other in the height direction.
  • the auxiliary magnetic shield member 140 is disposed on the side of the second side wall 112 (shown in FIG. 2) in the longitudinal direction of the housing 10, and covers the first yoke 51 and the second yoke 52. 12 has an exposed portion 142 exposed to the outside of the electromagnetic relay 1.
  • a magnetic shield member 40 is provided on each of a pair of opposing surfaces (that is, an upper surface and a bottom surface) facing the height direction of the housing 10 (that is, the vertical direction in FIG. 9).
  • the first auxiliary magnetic shield member 140 is provided on one of the surfaces (that is, the side surfaces) orthogonal to (that is, intersecting with) the pair of opposed surfaces facing each other in the height direction. You may provide the 2nd auxiliary
  • the second auxiliary magnetic shield member 240 is disposed on the first side wall 111 (shown in FIG.
  • the auxiliary magnetic shield members 140 and 240 on at least one of the surfaces intersecting the pair of opposing surfaces of the housing 10, the flow of the external magnetic field into the accommodating portion 13 in the housing 10 can be more reliably performed. Can be reduced.
  • the magnetic shield member 40 and the auxiliary magnetic shield member 140 respectively provided on at least three surfaces of the housing 10 that is, one of the upper surface, the bottom surface, and the side surface
  • the magnetic shield member 40 and the auxiliary magnetic shield member 140 can be easily attached to the housing 10, and the magnetic shield member 40 and the auxiliary magnetic shield member 140 can be fixed to the housing 10 without using an adhesive or the like.
  • the magnetic shield member 40 and the auxiliary magnetic shield members 140 and 240 can be made of any material depending on the design of the electromagnetic relay 1. For example, you may comprise with the board (or film) of the metal (for example, iron) which has a ferromagnetic material.
  • the magnetic shield member 40 and the auxiliary magnetic shield members 140 and 240 can be provided on any surface of the housing 10 according to the design of the electromagnetic relay 1.
  • the magnetic shield member 40 is provided on one (for example, the upper surface) of a pair of facing surfaces facing the housing 10 in the height direction, and a surface (that is, a side surface) intersecting the pair of facing surfaces facing the housing 10 in the height direction.
  • One auxiliary magnetic shield member 140 may be provided.
  • the magnetic shield member 40 and the auxiliary magnetic shield members 140 and 240 provided on each surface of the housing 10 may be connected to each other or may be independent from each other.
  • the non-magnetic body portion is not limited to the exposed portion 42 as long as the external magnetic field does not flow.
  • the portion of the cover 12 of the housing 10 that covers the gaps S1, S2, S3, S4 between the yokes 51, 52 of the electromagnet unit 50 and the iron pieces 64, 65 of the rotating block 60 is made of resin or magnetic field. You may cover with the member comprised with the metal which is not influenced (or it is hard to receive).
  • the electromagnetic relay to which the present disclosure can be applied is not limited to the electromagnetic relay 1 of the above-described embodiment.
  • the movable contact and the fixed contact are contacted or separated in the extending direction of the rotating shaft 62 of the rotating block 60. It may be configured as follows.
  • the electromagnetic relay 1 includes: A box-shaped insulating housing 10 having an accommodating portion 13 therein; A plate-like fixed contact side terminal 20 fixed to the housing 10 and extending from the outside of the housing 10 to the accommodating portion 13 and having a fixed contact 21 located in the accommodating portion 13; A plate-like movable contact-side terminal 30 fixed to the housing 10, extending from the outside of the housing 10 to the accommodating portion 13 and disposed in parallel with the fixed contact-side terminal 20; The movable contact 33 is disposed in the housing portion 13 and electrically connected to the movable contact side terminal 30 and faces the fixed contact 21. The movable contact 33 contacts the fixed contact 21.
  • a movable contact piece 32 that is elastically deformed so as to be separable;
  • An electromagnet part 50 arranged in the housing part 13 and capable of supplying currents in different directions;
  • a rotating block 60 disposed in the accommodating portion 13 and rotating around the rotating shaft 62 with respect to the housing 10 in a different direction according to the direction of the current supplied to the electromagnet portion 50;
  • a movable member 70 that moves in accordance with the rotational direction of the rotational block 60 to bring the movable contact 33 into contact with or separate from the fixed contact 21;
  • a magnetic shield member 40 provided on at least one of a pair of opposed surfaces orthogonal to the rotation shaft 62 of the housing 10;
  • the electromagnet unit 50 is A rotating block arrangement space 54 is disposed between the movable contact piece 32 and the electromagnet portion 50, and has a rotation block arrangement space 54 in which the front end surfaces face each other and the rotation block is arranged between the front end surfaces.
  • the rotating block 60 is A first iron piece 64 disposed on one side of the rotating block 60 such that a first end 641 protrudes toward the first yoke 51 and a second end 642 protrudes toward the second yoke 52; , A second iron piece 65 disposed on the other side of the rotating block 60 such that a first end 651 protrudes toward the first yoke 51 and a second end 652 protrudes toward the second yoke 52; , A permanent magnet 63 provided between the first iron piece 64 and the second iron piece 65; Have The first end 641 of the first iron piece 64 has a first gap S1 between the first yoke 51 and the first yoke 51 when the movable contact 33 is separated from the fixed contact 21.
  • the second iron piece 64 has a second gap S2 between the second end 642 of the iron piece 64 and the second yoke 52 when the movable contact 33 is in contact with the fixed contact 21, and the second iron piece.
  • the first end 651 of 65 has a third gap S3 between the first yoke 51 and the second iron piece 65.
  • the second end 652 has a fourth gap S4 between the second end 652 and the second yoke 52 when the movable contact 33 is separated from the fixed contact 21.
  • the magnetic shield member 40 is A magnetic part 41 and non-magnetic parts 42, 142, 242;
  • the nonmagnetic parts 42, 142, and 242 are formed on at least a part of a portion that covers at least one of the first to fourth gaps S 1 to S 4 of the housing 10 in the extending direction of the rotating shaft 62. Has been placed.
  • the magnetic shield member 40 provided on at least one of the pair of opposed surfaces orthogonal to the rotation shaft 62 of the rotation block 60 of the housing 10 is provided. Thereby, the influence of the external magnetic field with respect to the accommodating part 13 in the housing 10 can be reduced.
  • the magnetic shield member 40 includes a magnetic part 41 and nonmagnetic parts 42, 142, and 242, and the nonmagnetic parts 42, 142, and 242 are affected by an external magnetic field that flows through the magnetic part 41. It is disposed on at least a part of the portion of the housing 10 that covers the gaps S1 to S4 between the yokes 51 and 52 of the electromagnet portion 50 and the iron pieces 64 and 65 of the rotating block 60, which are easy portions. As a result, the gaps S1 to S1 between the yokes 51 and 52 of the electromagnet unit 50 and the iron pieces 64 and 65 of the rotating block 60 are compared with an electromagnetic relay having a magnetic shield member that is not provided with a non-magnetic member.
  • the electromagnetic relay 1 is:
  • the non-magnetic parts 42, 142, 242 are at least part of a portion that covers at least the vicinity of the tip surface of the first yoke 51 of the housing 10 in the extending direction of the rotating shaft 62, or the At least a part of the housing 10 covering at least the vicinity of the tip surface of the second yoke 52, or at least a part of a portion of the housing 10 covering the vicinity of the tip surface of the first yoke 51, and the The second yoke 52 is further disposed on at least a part of a portion covering at least the vicinity of the tip surface.
  • the influence of the magnetic body portion 41 of the magnetic shield member 40 on the magnetic interaction between the permanent magnet 63 and the electromagnet portion 50 of the rotation block 60 can be further reduced and rotated.
  • An increase in operating voltage required for the rotation of the block 60 can be more reliably suppressed.
  • the electromagnetic relay 1 is:
  • the nonmagnetic body portions 42, 142, 242 are at least one of the first end portion 641 and the second end portion 642 of the first iron piece 64 of the housing 10 in the extending direction of the rotating shaft 62.
  • the two end portions 652 are disposed at portions covering the entire movable region 48.
  • the influence of the magnetic body portion 41 of the magnetic shield member 40 on the magnetic interaction between the permanent magnet 63 and the electromagnet portion 50 of the rotation block 60 can be further reduced and rotated.
  • An increase in operating voltage required for the rotation of the block 60 can be more reliably suppressed.
  • the electromagnetic relay 1 according to the fourth aspect of the present disclosure is:
  • the magnetic shield member 40 is provided on each of the pair of opposed surfaces of the housing 10.
  • the influence of the external magnetic field on the accommodating portion 13 in the housing 10 can be more reliably reduced.
  • the electromagnetic relay 1 is: Auxiliary magnetic shield members 140 and 240 are provided on at least one of the surfaces intersecting the pair of opposed surfaces of the housing 10.
  • the influence of the external magnetic field on the accommodating portion 13 in the housing 10 can be more reliably reduced.
  • the smart meter according to the sixth aspect of the present disclosure is: The electromagnetic relay 1 of the said aspect is provided.
  • the electromagnetic relay 1 of the above aspect can reduce the influence of the external magnetic field while suppressing an increase in the operating voltage of the rotating block 60. As a result, power can be measured with high accuracy.
  • the electromagnetic relay of the present disclosure can be applied to, for example, a smart meter.
  • Electromagnetic relay 10 Housing 11 Base 111 1st side wall 112 2nd side wall 113 3rd side wall 114 4th side wall 12 Cover 13 Storage part 20 Fixed contact side terminal 21 Fixed contact 30 Movable contact side terminal 301 One end part 31 Terminal part 32 Movable contact Piece 33 Movable contact 34 Curved portion 40 Magnetic shield member 41 Magnetic body portions 42, 142, 242 Exposed portion (an example of non-magnetic body portion) 43, 44, 45, 46, 49 Opening 47, 147 Notch 48 (movable area of first iron piece and second iron piece) 50 Electromagnet part 501 Coil 51 First yoke 511 Connection part 512 Adsorption part 52 Second yoke 521 Connection portion 522 Adsorption portion 53 Coil terminal 54 Rotating block arrangement space 60 Rotating block 61 Block housing 62 Rotating shaft 63 Permanent magnet 64 First iron piece 641 First end portion 642 Second end portion 65 Second iron piece 651 First end Portion 652 second end portion 66 arm portion 67 support plate 70

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)
  • Electromagnets (AREA)

Abstract

La présente invention concerne un relais électromagnétique qui est équipé d'un élément de blindage magnétique disposé sur au moins l'une parmi une paire de surfaces opposées d'un boîtier, qui sont orthogonales à un axe de rotation pour un bloc rotatif. L'élément de blindage magnétique comprend une portion de corps magnétique et une portion de corps non magnétique. La portion de corps non magnétique est disposée dans le sens de l'extension de l'axe de rotation, au moins dans une section à partir d'une portion du boîtier recouvrant au moins l'un quelconque parmi des premier à quatrième écarts.
PCT/JP2017/044582 2017-02-28 2017-12-12 Relais électromagnétique et compteur intelligent Ceased WO2018159060A1 (fr)

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JP2017-037541 2017-02-28
JP2017037541A JP6376231B1 (ja) 2017-02-28 2017-02-28 電磁継電器およびスマートメータ

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CN110634708B (zh) * 2019-10-05 2024-07-30 浙江美硕电气科技股份有限公司 一种永磁式密封接触器
CN115631970A (zh) * 2022-10-13 2023-01-20 厦门宏发电力电器有限公司 一种带屏蔽壳的继电器

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH01107839U (fr) * 1988-01-12 1989-07-20
JP2013222699A (ja) * 2012-04-19 2013-10-28 Fujitsu Component Ltd 電磁継電器
JP2015018762A (ja) * 2013-07-12 2015-01-29 オムロン株式会社 接点機構部およびこれを備えた電磁継電器
JP2015018767A (ja) * 2013-07-12 2015-01-29 オムロン株式会社 接点機構部
WO2015125319A1 (fr) * 2014-02-24 2015-08-27 オムロン株式会社 Relais électromagnétique

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Publication number Priority date Publication date Assignee Title
EP0183867B1 (fr) * 1984-12-05 1989-02-01 Sauer, Hans Relais pour circuits à haute fréquence
CN203013632U (zh) * 2013-01-09 2013-06-19 厦门宏发电力电器有限公司 带有磁屏蔽结构的磁保持继电器
CN204651253U (zh) * 2015-04-15 2015-09-16 浙江正泰电器股份有限公司 磁保持继电器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01107839U (fr) * 1988-01-12 1989-07-20
JP2013222699A (ja) * 2012-04-19 2013-10-28 Fujitsu Component Ltd 電磁継電器
JP2015018762A (ja) * 2013-07-12 2015-01-29 オムロン株式会社 接点機構部およびこれを備えた電磁継電器
JP2015018767A (ja) * 2013-07-12 2015-01-29 オムロン株式会社 接点機構部
WO2015125319A1 (fr) * 2014-02-24 2015-08-27 オムロン株式会社 Relais électromagnétique

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CN109997209A (zh) 2019-07-09
CN109997209B (zh) 2020-12-01

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