WO2022209412A1 - Relais électromagnétique - Google Patents

Relais électromagnétique Download PDF

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Publication number
WO2022209412A1
WO2022209412A1 PCT/JP2022/006728 JP2022006728W WO2022209412A1 WO 2022209412 A1 WO2022209412 A1 WO 2022209412A1 JP 2022006728 W JP2022006728 W JP 2022006728W WO 2022209412 A1 WO2022209412 A1 WO 2022209412A1
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WO
WIPO (PCT)
Prior art keywords
spring
protrusion
electromagnetic relay
armature
spring piece
Prior art date
Application number
PCT/JP2022/006728
Other languages
English (en)
Japanese (ja)
Inventor
涼 山中
芳英 浅田
貴司 大西
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN202280011767.7A priority Critical patent/CN116745878A/zh
Publication of WO2022209412A1 publication Critical patent/WO2022209412A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • 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
    • H01H50/24—Parts rotatable or rockable outside coil
    • 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
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity

Definitions

  • the present disclosure relates to electromagnetic relays, and more particularly to electromagnetic relays having hinge springs for supporting armatures.
  • Patent Document 1 As a conventional example, the electromagnetic relay described in Patent Document 1 is exemplified.
  • An electromagnetic relay (hereinafter referred to as conventional example) described in Patent Document 1 includes a contact device and an electromagnet device that opens and closes the contact device.
  • a conventional electromagnet device includes an iron core, a bobbin surrounding the iron core, a coil wound around the bobbin, a yoke connected to the iron core, an armature, and a hinge spring.
  • the hinge spring is formed so that the upper tip bends to the left and has an L-shaped cross section.
  • the hinge spring and yoke hold the armature so that it can rotate about the inside corner of the armature bend.
  • the tip of the hinge spring is inserted into the hole provided in the bent portion of the armature.
  • the tip of the hinge spring is bent in an L shape, it is sometimes difficult to insert the tip of the hinge spring into the hole of the armature.
  • an electromagnetic relay includes an electromagnet, an armature configured to rotate by the magnetic force of the electromagnet, and a spring that rotatably supports the armature,
  • the electromagnet is positioned below the main portion of the armature, and the spring includes a fixed piece fixed to the electromagnet and a spring elastically deformable with respect to the fixed piece and positioned above the fixed piece.
  • the armature has a through hole, the spring piece is inserted into the through hole, and the projection is The projection is positioned above at least a portion of the armature and vertically opposed to the portion of the armature, and the upper end of the projection is connected to the tip of the spring piece, and the projection is , projecting downward from the spring piece.
  • FIG. 1 is a perspective view of an electromagnetic relay with a case removed according to an embodiment of the present disclosure.
  • FIG. 2 is an exploded perspective view of the same electromagnetic relay with the case removed.
  • FIG. 3 is a side view of the electromagnetic relay in the OFF state, omitting the case and body.
  • FIG. 4 is a cross-sectional view of a main part including a hinge spring and an armature in an OFF state in the electromagnetic relay.
  • FIG. 5 is a top view of the main part including the hinge spring and the armature in the OFF state of the electromagnetic relay.
  • FIG. 6 is a side view of the electromagnetic relay in the ON state, omitting the case and body.
  • FIG. 7 is a cross-sectional view of the main part including the hinge spring and the armature in the ON state in the electromagnetic relay.
  • FIG. 8 is a cross-sectional view of the main part of the electromagnetic relay in the process of assembling the hinge spring.
  • FIG. 9A is a side view of a main part of Modification 1 of the hinge spring in the electromagnetic relay;
  • FIG. 9B is a front view of a main part of Modification 1 of the hinge spring.
  • FIG. 10A is a side view of a main part of Modification 2 of the hinge spring in the electromagnetic relay;
  • FIG. 10B is a front view of a main part of Modification 2 of the hinge spring.
  • FIG. 11A is a side view of a main part of Modification 3 of the hinge spring in the electromagnetic relay;
  • FIG. 11B is a front view of a main part of Modification 3 of the hinge spring.
  • FIG. 11C is a cross-sectional view of a main part of Modification 3 of the hinge spring.
  • 12A is a front view of a main part of Modification 4 of the hinge spring in the electromagnetic relay;
  • FIG. 12B is a cross-sectional view of a main part of Modification 4 of the hinge spring.
  • 13A is a side view of a main part of Modification 5 of the hinge spring in the electromagnetic relay;
  • FIG. 13B is a front view of a main part of Modification 5 of the hinge spring.
  • FIG. FIG. 13C is a cross-sectional view of a main part of Modification 5 of the hinge spring.
  • FIG. 14A is a side view of a main part of Modification 6 of the hinge spring in the electromagnetic relay;
  • FIG. 14B is a front view of a main part of Modification 6 of the hinge spring.
  • An electromagnetic relay A1 according to an embodiment of the present disclosure includes an electromagnet 2, an armature 3, and a hinge spring 4 (see FIG. 1). Armature 3 is configured to be rotatable by the magnetic force of electromagnet 2 . A hinge spring 4 rotatably supports the armature 3 . It should be noted that the action indicated as “rotation” in the present disclosure includes “rotation”.
  • the hinge spring 4 includes a fixed piece 40 (see FIG. 3) fixed to the electromagnet 2 and a spring piece 41 (see FIG. 4) which is elastically deformable with respect to the fixed piece 40 and positioned above the fixed piece 40. and a protrusion 42 (see FIGS. 3 and 4) provided on the spring piece 41 .
  • the armature 3 has an opening 32 penetrating from the front surface to the rear surface of the armature 3 .
  • the “opening” may be expressed as a “through hole”.
  • a spring piece 41 is inserted into the opening 32 .
  • the protrusion 42 When the electromagnetic relay A1 is in the OFF state, the protrusion 42 is located above the top surface 30A of the armature 3 and faces the top surface 30A of the armature 3 (see FIG. 4).
  • the projecting portion 42 is formed in a shape such that the amount of projection from the spring piece 41 decreases as it approaches the tip of the spring piece 41 . That is, the upper end of the protrusion 42 is connected to the tip 43 of the spring piece 41 , and the protrusion 42 is configured to protrude downward from the tip 43 of the spring piece 41 .
  • the "surface of the armature 3" means “upper surface and right side”
  • the "back surface of the armature 3" means “lower surface and left side”.
  • the armature 3 With the hinge spring 4 inserted into the opening 32 , the armature 3 is pressed against the electromagnet 2 by the spring force of the spring piece 41 and supported. Since the projection 42 is formed in a shape in which the amount of projection from the spring piece 41 decreases as it approaches the tip of the spring piece 41 , when the spring piece 41 is inserted into the opening 32 , the projection 42 does not move. The spring piece 41 is elastically deformed by being pushed by the edge of the opening 32 . Then, when the protrusion 42 is removed from the opening 32, the force applied to the protrusion 42 disappears, so the amount of elastic deformation of the spring piece 41 decreases.
  • the electromagnetic relay A1 since the electromagnetic relay A1 according to the embodiment of the present disclosure can automatically bend the spring piece 41 by inserting the spring piece 41 into the opening 32, assembly of the hinge spring 4 to the armature 3 Workability can be improved. Furthermore, after the assembling work is completed, the protrusion 42 is positioned above the upper surface 30A of the armature 3 and faces the armature 3, thereby suppressing the spring piece 41 from coming off from the opening 32. can.
  • the electromagnetic relay A1 further includes a body 7 that supports the electromagnetic block 1, the contact block 5, and the card 6.
  • the up/down, left/right, and front/rear directions indicated by arrows in FIG. 1 are defined as the up/down, left/right, and front/rear directions of the electromagnetic relay A1.
  • these directions are defined for convenience of explanation, and do not define directions when the electromagnetic relay A1 is actually used.
  • directional terms such as “up”, “down”, “left”, “right”, “front”, “back” are used to describe relative positional relationships. are provided for illustration only and are not intended to limit the present disclosure.
  • the electromagnetic relay A1 of the present disclosure is installed at an angle, the direction of the electromagnetic relay A1 in actual use and the direction of the electromagnetic relay A1 described in the present disclosure may differ from each other.
  • the contact block 5 has a fixed contact plate 50, a fixed contact 51, a movable spring 52, a movable contact 53, a fixed contact terminal 54, and a movable contact terminal 55 (see FIGS. 1 to 3). ).
  • the fixed contact plate 50 has a rectangular straight portion 500 and an arc-shaped curved portion 501 .
  • the straight portion 500 and the curved portion 501 are integrally formed by bending one metal plate.
  • the fixed contact 51 is formed into a shape similar to that of the curved portion 501 and fixed to the surface of the curved portion 501, for example, using a contact material containing silver as a main component.
  • the movable spring 52 has a central piece 520 , a pair of side pieces 521 and leg pieces 522 .
  • One side piece 521 is arranged in front of and behind the central piece 520 (see FIG. 2). That is, the central piece 520 and the pair of side pieces 521 are integrally formed in a W shape when viewed from the left-right direction.
  • the leg piece 522 is formed in a U shape when viewed from the left-right direction.
  • the upper ends of the leg pieces 522 are connected to the lower ends of the central piece 520 and the pair of side pieces 521 .
  • the center piece 520, the pair of side pieces 521, and the leg pieces 522 are integrally formed by processing a single metal plate.
  • the movable contact 53 is formed in a cylindrical shape with a curved contact surface, for example, from a contact material whose main component is silver.
  • the movable contact 53 is attached to the central piece 520 of the movable spring 52 and electrically connected to the movable spring 52 .
  • the fixed contact terminal 54 has a flat mounting piece 540 and a prismatic terminal piece 541 projecting downward from the lower end of the mounting piece 540 (see FIG. 3).
  • the fixed contact terminal 54 is electrically connected to the fixed contact plate 50 by attaching the straight portion 500 of the fixed contact plate 50 to the left side surface of the mounting piece 540 .
  • the movable contact terminal 55 has a U-shaped mounting piece 550 and a prism-shaped terminal piece 551 projecting downward from the lower end of the mounting piece 550 (see FIG. 3).
  • the movable contact terminal 55 is electrically connected to the movable spring 52 by attaching the leg piece 522 of the movable spring 52 to the left side surface of the mounting piece 550 .
  • Electromagnet Block 1 has an electromagnet 2 , an armature 3 and a hinge spring 4 .
  • Electromagnet 2 has an iron core 20, a coil bobbin 21, a coil 22, a yoke 23, and a permanent magnet .
  • the coil bobbin 21 has a cylindrical winding drum (not shown), a first flange 211 provided at the upper end of the winding drum, and a second flange 212 provided at the lower end of the winding drum. (See Figure 3).
  • the winding drum portion, the first flange portion 211, and the second flange portion 212 are integrally formed as an electrically insulating synthetic resin molding.
  • the iron core 20 is formed in a cylindrical shape having a disc-shaped magnetic pole portion 200 at one end (upper end) in the axial direction.
  • the iron core 20 is attached to the coil bobbin 21 so as to be accommodated in the winding body of the coil bobbin 21 .
  • the magnetic pole portion 200 is exposed from the upper surface of the first flange portion 211 of the coil bobbin 21 (see FIG. 3).
  • the coil 22 is provided on the outer peripheral surface of the winding body of the coil bobbin 21 .
  • the coil 22 includes a set coil and a reset coil.
  • One terminal (not shown) of the set coil and one terminal (not shown) of the reset coil are electrically connected to a pair of coil terminals 25 supported by the second flange portion 212 of the coil bobbin 21, one by one. be.
  • the other terminals (not shown) of each of the set coil and reset coil are electrically connected to another coil terminal supported by the second flange portion 212 of the coil bobbin 21 .
  • the yoke 23 has a first yoke 231 and a second yoke 232 (see FIG. 3).
  • the first yoke 231 is L-shaped when viewed from the rear.
  • a lower end portion of the core 20 is coupled to one end (left end) of the first yoke 231 .
  • the other end (upper end) of the first yoke 231 is located at substantially the same height as the magnetic pole portion 200 of the iron core 20 in the vertical direction (see FIG. 3).
  • the second yoke 232 is arranged on the left side of the first yoke 231 with the permanent magnet 24 sandwiched between the lower end portion and the first yoke 231 .
  • the permanent magnet 24 is formed in a rectangular plate shape.
  • the permanent magnet 24 is magnetized in its thickness direction (horizontal direction).
  • the permanent magnet 24 is magnetized so that the left side face is the north pole and the right side face is the south pole.
  • the permanent magnet 24 may be magnetized so that the left side surface becomes the S pole and the right side surface becomes the N pole.
  • the armature 3 includes a plate-shaped main portion 30 whose longitudinal direction is the left-right direction, and a plate-shaped arm projecting downward from one end (right end) of the main portion 30 in the longitudinal direction. 31 (see FIGS. 1-3). That is, the armature 3 is formed in an inverted L shape when viewed from the rear.
  • An opening 32 is provided in the armature 3 .
  • the opening 32 penetrates the armature 3 in the thickness direction (vertical direction and lateral direction) from the center of the right end of the main portion 30 in the front-rear direction to the vicinity of the center in the vertical direction of the arm portion 31 (FIGS. 1 and 2). See Figure 4). That is, the armature 3 has a through hole.
  • the through-hole is referred to as "opening 32".
  • a cover 34 is attached to the arm portion 31 of the armature 3 (see FIGS. 2 and 3).
  • the cover 34 is made of, for example, a synthetic resin material so as to cover the right side surface, the front and rear side surfaces, and the lower surface of the arm portion 31 .
  • a protrusion 340 is provided on the right side surface of the cover 34 (see FIG. 3). The protrusion 340 protrudes rightward from the lower part of the right side surface of the cover 34 in the center in the front-rear direction (see FIG. 3).
  • the armature 3 is arranged so that the main portion 30 faces the magnetic pole portion 200 of the electromagnet 2 in the vertical direction, and the arm portion 31 faces the first yoke 231 in the horizontal direction ( See Figure 3).
  • the corner portion 33 located at the boundary between the lower surface of the main portion 30 and the left side surface of the arm portion 31 is in contact with the right corner portion 233 of the upper end portion of the first yoke 231 (see FIGS. 3 and 4).
  • the armature 3 can rotate bidirectionally between the OFF position and the ON position about the corner 233 of the first yoke 231 as an axis.
  • the OFF position is a position where the main portion 30 is separated from the magnetic pole portion 200 and the arm portion 31 is in contact with the right side surface of the first yoke 231 (see FIG. 3).
  • the ON position is a position where the main portion 30 is in contact with the magnetic pole portion 200 and the arm portion 31 is away from the right side surface of the first yoke 231 (see FIG. 6).
  • the hinge spring 4 has a fixed piece 40 and a spring piece 41 (see FIGS. 3 and 4).
  • the fixed piece 40 is formed in a rectangular flat plate shape.
  • the spring piece 41 is formed in a long rectangular flat plate shape.
  • the spring piece 41 protrudes upward from the upper end of the fixed piece 40 .
  • the fixed piece 40 and the spring piece 41 are integrally formed of a metal plate material suitable for a spring material.
  • a protrusion 42 is provided at the tip 43 of the spring piece 41 (see FIGS. 4 and 5).
  • the projecting portion 42 is formed by cutting and raising a part of the tip portion 43 .
  • a portion closer to the tip of the spring piece 41 than the protrusion 42 is formed flat.
  • the spring piece 41 has a flat shape above the protrusion 42 .
  • the tip 43 of the spring piece 41 When the tip 43 of the spring piece 41 is cut and raised using a mold to form the protrusion 42, the flat portion near the tip of the spring piece 41 can be supported.
  • the protrusion 42 is formed in a trapezoidal shape in plan view.
  • the upper end of the projecting portion 42 is connected to the tip portion 43 of the spring piece 41 .
  • the projecting portion 42 faces the portion around the opening 32 on the upper surface of the main portion 30 along the thickness direction (vertical direction) of the main portion 30 (see FIG. 4).
  • the projecting portion 42 is formed in a shape such that the amount of projection from the spring piece 41 decreases as it approaches the tip (upper end) of the spring piece 41 . That is, the left side surface of the protrusion 42 is an inclined surface that slopes from the lower end of the protrusion 42 toward the upper end (tip 43 of the spring piece 41).
  • the hinge spring 4 is in contact with the armature 3 on the left side of the spring piece 41, and is pushed rightward from the armature 3 and elastically deformed. Therefore, the hinge spring 4 can rotatably support the armature 3 with the first yoke 231 by applying leftward elastic force (spring force) to the armature 3 .
  • the protrusion 42 of the hinge spring 4 vertically faces the upper surface 30A of the main portion 30, even if the armature 3 moves upward, the upper surface of the main portion 30 contacts the protrusion 42. As a result, upward movement (floating) of the armature 3 is suppressed.
  • the corner portion 33 of the armature 3 and the corner portion 233 of the first yoke 231 are in contact with each other, the lower end of the projecting portion 42 and the top surface 30A of the main portion 30 are not in contact with each other.
  • the distance between the lower end of the projecting portion 42 and the upper surface of the main portion 30 is preferably about 10 to 15 ⁇ m.
  • the corner 33 of the armature 3 and the corner 233 of the first yoke 231 may contact each other.
  • a recess 300 is provided in the upper surface of the main portion 30 facing the protrusion 42 of the hinge spring 4 (see FIGS. 4 and 5). That is, the protrusion 42 faces the bottom surface (upper surface 30A) of the recess 300 along the thickness direction (vertical direction) of the main portion 30 .
  • the tip (upper end) of the hinge spring 4 is less likely to be bent than the case where the recess 300 is not provided. position can be lowered. As a result, the height of the hinge spring 4 is suppressed, and the size of the electromagnet block 1 is reduced.
  • the width of the recess 300 is narrower than the width of the opening 32 in the direction (front-rear direction) intersecting the thickness direction (left-right direction) of the spring piece 41 (see FIG. 5).
  • the card 6 has a main body 60, a pair of first pressing portions 61, a second pressing portion 62, and a pair of shaft portions 63 (see FIGS. 2 and 3).
  • the main body 60 is formed in a rectangular plate shape.
  • the pair of first pressing portions 61 protrude rightward one by one from both front and rear ends of the upper end of the right side surface of the main body 60 .
  • the tip (right end) of each of the pair of first pressing portions 61 is formed in a cylindrical shape.
  • the second pressing portion 62 protrudes leftward from the center of the left side surface of the main body 60 in the vertical direction and the front-rear direction.
  • a pair of shaft portions 63 are provided one each at the front and rear ends of the lower end of the main body 60 .
  • Each of the pair of shaft portions 63 is formed in a cylindrical shape.
  • the card 6 is supported by the body 7 so as to be rotatable with the pair of shafts 63 as fulcrums.
  • the body 7 has a base member 70 and a seal member 71 (see FIG. 2).
  • the base member 70 includes a first support portion 701 that supports the electromagnet block 1 , a second support portion 702 that supports the contact block 5 , and a pair of bearing portions 703 that support the pair of shaft portions 63 of the card 6 . have.
  • the first support portion 701, the second support portion 702, and the pair of bearing portions 703 are integrally formed as a molded body of synthetic resin material.
  • the sealing member 71 is formed in a rectangular plate shape.
  • a base member 70 is attached to the upper surface of the seal member 71 .
  • the body 7 is covered with a case.
  • the case is formed in a rectangular parallelepiped box shape with an open bottom surface.
  • the seal member 71 is configured to close the opening on the lower surface of the case that covers the body 7 .
  • the pair of side pieces 521 of the movable spring 52 pushes the pair of first pressing portions 61 of the card 6 leftward. Therefore, the card 6 receives a counterclockwise rotating force in FIG. 3 and pushes the cover 34 of the armature 3 leftward through the second pressing portion 62 (see FIG. 3).
  • the electromagnet 2 In the OFF state, the electromagnet 2 does not generate magnetic force. Therefore, the arm portion 31 of the armature 3 receives the magnetic attraction force of the permanent magnet 24 and is attracted to the first yoke 231 .
  • the electromagnet 2 In the electromagnetic relay A1 in the OFF state, when a coil current is passed through the two coil terminals 25 connected to the set coil, the electromagnet 2 generates forward magnetic force (electromagnetic force). The forward magnetic force generated by the electromagnet 2 attracts the main portion 30 of the armature 3 to the magnetic pole portion 200 of the iron core 20 . As a result, the armature 3 rotates counterclockwise and the main portion 30 is attracted to the magnetic pole portion 200 (see FIG. 6). If the main portion 30 and the magnetic pole portion 200 are in contact with each other, the contact state between the main portion 30 and the magnetic pole portion 200 is maintained by the magnetic force of the permanent magnet 24 even if the coil current flowing through the set coil is stopped.
  • the hinge spring 4 can support the armature 3 with the first yoke 231 by applying a leftward elastic force (spring force) to the armature 3 ( See Figure 7).
  • the arm portion 31 of the armature 3 since an attractive force is generated between the arm portion 31 of the armature 3 and the first yoke 231 , the arm portion 31 is attracted to the first yoke 231 .
  • the contact state between the arm portion 31 and the first yoke 231 is maintained by the magnetic force of the permanent magnet 24 even if the coil current flowing through the reset coil is stopped. be.
  • the armature 3 rotates clockwise, the projection 340 of the cover 34 moves leftward, so the card 6 receives the leftward spring force of the movable spring 52 on the pair of first pressing portions 61 and rotates counterclockwise. do.
  • the force with which the pair of first pressing portions 61 press the pair of side pieces 521 of the movable spring 52 to the right decreases.
  • the rightward deflection of the movable spring 52 is reduced, and the movable contact 53 provided on the central piece 520 is separated from the fixed contact 51 (see FIG. 3).
  • the electromagnetic relay A1 is switched from the ON state to the OFF state.
  • the worker who performs the assembly work assembles the armature 3 with the cover 34 attached to the arm 31 to the electromagnet 2 with the hinge spring 4 attached to the first yoke 231 .
  • the operator inserts the distal end portion 43 of the hinge spring 4 into the opening 32 of the armature 3 from below (see FIG. 8).
  • the inner peripheral surface 320 (see FIG. 8) of the opening 32 of the main portion 30 of the armature 3 may come into contact with the left side surface of the protrusion 42 of the hinge spring 4 .
  • the left side surface of the protrusion 42 of the hinge spring 4 is an inclined surface that slopes from the lower end to the upper end of the protrusion 42 . Therefore, when the left side surface of the protrusion 42 hits the inner peripheral surface 320 of the opening 32 , as the hinge spring 4 is inserted into the opening 32 , the tip portion 43 (spring piece) receives a rightward force from the inner peripheral surface 320 . 41) bends to the right (is elastically deformed).
  • the electromagnetic relay A1 can automatically bend the spring piece 41 by inserting the tip portion 43 into the opening 32, the workability of assembling the hinge spring 4 to the armature 3 can be improved. can be done. Furthermore, after the assembly work is completed, the protrusion 42 faces the portion (bottom surface of the recess 300) around the opening 32 on the surface of the main portion 30 along the thickness direction (vertical direction) of the main portion 30. Therefore, it is possible to prevent the spring piece 41 from slipping out of the opening 32 .
  • An inner peripheral surface 320 of the opening 32 is formed with an inclined surface 321 inclined from the back surface (lower surface) of the main portion 30 toward the front surface (upper surface) of the main portion 30 in a direction toward the spring piece 41 (see FIG. 8). Therefore, when the tip (upper end) of the spring piece 41 of the hinge spring 4 hits the inclined surface 321 , the tip of the spring piece 41 is guided into the opening 32 along the inclined surface 321 . As a result, the electromagnetic relay A ⁇ b>1 can further improve the workability of assembling the hinge spring 4 to the armature 3 .
  • the hinge spring 4 described below is characterized by the shape of the protrusion 42 . Since the hinge spring 4 of each modified example has the same configuration as the hinge spring 4 in the embodiment except for the shape of the protrusion 42, the same reference numerals are given to the configurations common to the hinge spring 4 in the embodiment. , and the illustration and description thereof are omitted as appropriate.
  • the hinge spring 4 of Modification 1 has a protruding portion 42 formed by cutting and bending a part of the tip portion 43 into a Z shape.
  • the left side surface of the upper portion is an inclined surface that slopes from the lower end to the upper end of the protrusion 42 (see FIG. 9A). Therefore, the electromagnetic relay A1 using the hinge spring 4 of Modification 1 can improve the workability of assembling the hinge spring 4 with respect to the armature 3, as in the embodiment. It is possible to prevent the spring piece 41 from coming off.
  • the hinge spring 4 of Modification 2 has a protrusion 42 formed in a bridge shape by cutting a portion of the distal end portion 43 into a bridge shape.
  • the left side surface of the upper portion is an inclined surface that slopes from the lower end to the upper end of the protrusion 42 (see FIG. 10A). Therefore, the electromagnetic relay A1 using the hinge spring 4 of Modification 2 can improve the workability of assembling the hinge spring 4 to the armature 3 as in the embodiment. It is possible to prevent the spring piece 41 from coming off.
  • the left side surface of the upper portion is an inclined surface that slopes from the lower end to the upper end of the protrusion 42 (see FIG. 11A). Therefore, the electromagnetic relay A1 using the hinge spring 4 of Modification 3 can improve the workability of assembling the hinge spring 4 with respect to the armature 3 as in the embodiment. It is possible to prevent the spring piece 41 from coming off.
  • the front and rear of the projection 42 are connected to the tip portion 43 (see FIG. 11C). It is possible to improve the mechanical strength of
  • the left side surface of the upper portion is an inclined surface that slopes from the lower end to the upper end of the protrusion 42 (see FIG. 12A). Therefore, the electromagnetic relay A1 using the hinge spring 4 of Modification 4 can improve the workability of assembling the hinge spring 4 with respect to the armature 3 as in the embodiment. It is possible to prevent the spring piece 41 from coming off.
  • the front and rear of the projecting portion 42 are connected to the tip portion 43.
  • the mechanical strength of the protrusion 42 can be improved.
  • the protrusion 42 is connected to the tip portion 43 over the entire circumference (see FIG. 13C). It is possible to further improve the mechanical strength of.
  • the protrusion 42 is formed by bending a tip portion 43 including the tip of the spring piece 41 . More specifically, the protruding portion 42 is formed by hinge-bending the distal end portion 43 (see FIG. 14A).
  • the protrusion 42 of Modification 6 is formed into a cylindrical shape by hinge bending.
  • the left side surface of the upper portion is an inclined surface that slopes from the lower end to the upper end of the protrusion 42 (see FIG. 14A). Therefore, the electromagnetic relay A1 using the hinge spring 4 of Modification 6 can improve the workability of assembling the hinge spring 4 to the armature 3 as in the embodiment. It is possible to prevent the spring piece 41 from coming off.
  • the protrusion 42 is connected to the tip portion 43 over the entire circumference, so the mechanical strength of the protrusion 42 is higher than that of the hinge springs 4 of Modifications 3 and 4. can be further improved. Furthermore, since the hinge spring 4 of Modification 6 does not require a flat portion at the tip of the projecting portion 42, the length of the tip portion 43 can be shortened.
  • hinge spring 4 Although the present disclosure has been described using the hinge spring 4, it is not limited to the hinge spring. Other types of springs may be used as long as the armature 3 can be rotatably supported.
  • the electromagnetic relay A1 includes an electromagnet 2, an armature 3 configured to rotate by the magnetic force of the electromagnet 2, and a hinge that rotatably supports the armature 3.
  • a spring 4 the electromagnet 2 is positioned below the main portion 30 of the armature 3
  • the hinge spring 4 includes a fixed piece 40 fixed to the electromagnet 2, and elastically deformable with respect to the fixed piece 40. It has a spring piece 41 positioned above the fixed piece 40 and a protrusion 42 provided at the tip portion 43 of the spring piece 41, and the armature 3 has an opening 32 (through hole).
  • the spring piece 41 is inserted into the opening 32 (through hole), and the protrusion 42 is positioned above at least a part of the armature 3 and vertically faces a part of the armature 3 to form a protrusion.
  • the upper end of the portion 42 is connected to the tip portion 43 of the spring piece 41 , and the projecting portion 42 protrudes downward from the spring piece 41 .
  • the electromagnetic relay A1 can automatically deflect the spring piece 41 by inserting the spring piece 41 into the opening 32, the operation of assembling the hinge spring 4 to the armature 3 It is possible to improve the quality.
  • the spring piece 41 has a flat shape above the protrusion 42 .
  • the electromagnetic relay A1 according to the second aspect can support a flat portion near the tip of the spring piece 41 when the protrusion 42 is formed on the spring piece 41 using a mold.
  • the protrusion 42 is formed by cutting and raising a part of the spring piece 41 .
  • the electromagnetic relay A1 according to the third aspect can easily form the projection 42.
  • the protrusion 42 is formed by cutting and bending a part of the spring piece 41 into a Z shape.
  • the electromagnetic relay A1 according to the fourth aspect can easily form the protrusion 42.
  • the projecting portion 42 is formed in a bridge shape.
  • the electromagnetic relay A1 according to the fifth aspect can easily form the protrusion 42.
  • the projecting portion 42 is formed in a louver shape.
  • the electromagnetic relay A1 according to the sixth aspect can easily form the protrusion 42 and improve the mechanical strength of the protrusion 42 .
  • the protrusion 42 is formed by beading the spring piece 41 .
  • the electromagnetic relay A1 according to the seventh aspect can easily form the protrusion 42 and improve the mechanical strength of the protrusion 42 .
  • the projecting portion 42 is formed integrally with the spring piece 41 .
  • the protrusion 42 extends upward from the tip of the spring piece 41 and further extends downward.
  • the spring piece 41 can be automatically bent by inserting the spring piece 41 into the opening 32 (through hole). It is possible to improve the workability of the assembly work.
  • the projecting portion 42 is formed by bending the tip portion 43 of the spring piece 41 .
  • the projecting portion 42 is formed by bending, a flat portion at the tip of the projecting portion 42 is not required, so the length of the spring piece 41 can be shortened. .
  • the projecting portion 42 is formed by subjecting the tip portion 43 of the spring piece 41 to hinge bending.
  • the electromagnetic relay A1 according to the tenth aspect can easily form the protrusion 42 and improve the mechanical strength of the protrusion 42 .
  • the inner peripheral surface of the opening 32 (through hole) is formed with an inclined surface 321 that is inclined from bottom to top in a direction approaching the spring piece 41. ing.
  • the tip of the spring piece 41 of the hinge spring 4 hits the inclined surface 321, the tip of the spring piece 41 moves along the inclined surface 321 into the opening 32 (through hole). be guided. As a result, the workability of assembling the hinge spring 4 to the armature 3 can be further improved.
  • the electromagnetic relay A1 according to the twelfth aspect of the present disclosure is provided with a recess 300 on the upper surface of the main portion of the armature 3 and adjacent to the opening 32 (through hole), and the protrusion 42 is a recess It is located above the place 300 and faces the bottom surface of the recess 300 .
  • the position of the tip of the hinge spring 4 can be lowered compared to the case where the recess 300 is not provided. can be planned.
  • the width of the recess 300 is greater than the width of the opening 32 (through-hole ).
  • the magnetic resistance of the armature 3 is increased by forming the recess 300. can be suppressed.
  • An electromagnetic relay A1 includes an electromagnetic block 1, a contact block 5, and a card 6.
  • Electromagnet block 1 has electromagnet 2 , armature 3 , and hinge spring 4 .
  • the contact block 5 has a movable spring 52 , a movable contact 53 provided on the movable spring 52 , and a fixed contact 51 that contacts or separates from the movable contact 53 .
  • the card 6 transmits the rotation of the armature 3 to the movable spring 52, and switches between a contact state in which the movable contact 53 contacts the fixed contact and a non-contact state in which the movable contact separates from the fixed contact.
  • the electromagnetic relay A1 according to the fourteenth aspect can improve the workability of assembling the hinge spring 4 to the armature 3.

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

Abstract

Ce relais électromagnétique comprend : un électroaimant ; une armature conçue pour être entraînée en rotation par la force magnétique de l'électroaimant ; et un ressort destiné à supporter en rotation l'armature. L'électroaimant est situé sous une partie principale de l'armature. L'armature comporte un trou traversant, et une pièce à ressort est insérée dans le trou traversant. Une saillie est située au-dessus d'au moins une partie de l'armature, et est verticalement en regard de ladite partie de l'armature. Une extrémité supérieure de la saillie est reliée à une extrémité avant de la pièce à ressort. La saillie fait saillie de façon à s'étendre vers le bas à partir de la pièce à ressort.
PCT/JP2022/006728 2021-03-30 2022-02-18 Relais électromagnétique WO2022209412A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280011767.7A CN116745878A (zh) 2021-03-30 2022-02-18 电磁继电器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-058424 2021-03-30
JP2021058424A JP2022155088A (ja) 2021-03-30 2021-03-30 電磁継電器

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WO2022209412A1 true WO2022209412A1 (fr) 2022-10-06

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JP (1) JP2022155088A (fr)
CN (1) CN116745878A (fr)
WO (1) WO2022209412A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170249U (fr) * 1981-04-21 1982-10-26
JPS5882753U (ja) * 1981-11-30 1983-06-04 富士通株式会社 継電器
JPS6160434U (fr) * 1984-09-25 1986-04-23
JPS6176653U (fr) * 1984-10-25 1986-05-23
JPH0198450U (fr) * 1987-12-23 1989-06-30
JPH05174683A (ja) * 1991-12-24 1993-07-13 Matsushita Electric Works Ltd 電磁継電器
JP2000222991A (ja) * 1999-01-29 2000-08-11 Matsushita Electric Works Ltd 電磁リレー
JP2018170257A (ja) * 2017-03-30 2018-11-01 パナソニックＩｐマネジメント株式会社 電磁継電器
JP2019212376A (ja) * 2018-05-31 2019-12-12 富士通コンポーネント株式会社 電磁継電器

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57170249U (fr) * 1981-04-21 1982-10-26
JPS5882753U (ja) * 1981-11-30 1983-06-04 富士通株式会社 継電器
JPS6160434U (fr) * 1984-09-25 1986-04-23
JPS6176653U (fr) * 1984-10-25 1986-05-23
JPH0198450U (fr) * 1987-12-23 1989-06-30
JPH05174683A (ja) * 1991-12-24 1993-07-13 Matsushita Electric Works Ltd 電磁継電器
JP2000222991A (ja) * 1999-01-29 2000-08-11 Matsushita Electric Works Ltd 電磁リレー
JP2018170257A (ja) * 2017-03-30 2018-11-01 パナソニックＩｐマネジメント株式会社 電磁継電器
JP2019212376A (ja) * 2018-05-31 2019-12-12 富士通コンポーネント株式会社 電磁継電器

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CN116745878A (zh) 2023-09-12
JP2022155088A (ja) 2022-10-13

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