WO2020022231A1

WO2020022231A1 - Electromagnet device and electromagnetic relay

Info

Publication number: WO2020022231A1
Application number: PCT/JP2019/028554
Authority: WO
Inventors: 良介尾▲崎▼; 和広小玉; 進弥木本
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2018-07-27
Filing date: 2019-07-19
Publication date: 2020-01-30
Also published as: JP7357193B2; JP2020017499A

Abstract

Provided are an electromagnet device and an electromagnetic relay, which allow an insulation distance between a coil and a yoke along the surface of an electric insulator to be increased. The electromagnet device (10) is provided with a coil bobbin (19), a coil (14), a yoke (11), and multiple flange parts. The coil (14) is wound on the coil bobbin (19). The yoke (11) forms a portion of a path of a magnetic flux generated by the coil (14). The multiple flange parts have electrical insulation properties, are disposed on one end side of the coil (14) in the axial direction of the coil (14) and face each other with a space therebetween in the axial direction. The multiple flange parts include a first flange part (191) and a second flange part (192). The second flange part (192) is disposed on the opposite side from the coil (14) with respect to the first flange part (191) in the axial direction.

Description

Electromagnet device, electromagnetic relay

The present disclosure generally relates to an electromagnetic device and an electromagnetic relay, and more particularly to an electromagnetic device having a coil bobbin and an electromagnetic relay.

Patent Document 1 describes an electromagnet device that moves a movable contact of a contact device.

電 The electromagnet device described in Patent Document 1 generates an electromagnetic force in accordance with energization of the exciting winding (coil). The electromagnet device includes a coil bobbin on which an exciting winding is wound, and a yoke surrounding the coil bobbin. The yoke forms a magnetic path through which the magnetic flux generated by the exciting winding passes. The electromagnet device is configured so that the movable iron core can be moved by an electromagnetic force. The movable iron core is fixed to one end of a movable shaft (shaft). The electromagnet device can move the movable contact provided on the other end of the movable shaft by moving the movable iron core. The electromagnet device can move the fixed contact and the movable contact of the movable contact toward and away from each other by moving the movable contact.

In the electromagnet device, it is necessary to secure an insulation distance between the coil and the yoke along the surface of the electrical insulator.

JP 2014-232668 A

The present disclosure has been made in view of the above circumstances, and has as its object to provide an electromagnet device and an electromagnetic relay capable of extending the insulation distance between the coil and the yoke along the surface of the electrical insulator. Is to do.

電 The electromagnet device according to an aspect of the present disclosure includes a coil bobbin, a coil, a yoke, and a plurality of flange portions. The coil is wound around the coil bobbin. The yoke forms a part of a path of a magnetic flux generated by the coil. The plurality of flange portions have electrical insulation properties, are provided on one end side of the coil in the axial direction of the coil, and face each other with a gap in the axial direction. The plurality of flange portions include a first flange portion and a second flange portion. The second flange portion is provided on the opposite side to the coil with respect to the first flange portion in the axial direction.

電磁 An electromagnetic relay according to an aspect of the present disclosure includes the electromagnet device, a fixed contact, and a movable contact. The movable contact has a movable contact, and moves between a closed position where the movable contact contacts the fixed contact and an open position where the movable contact separates from the fixed contact. The electromagnet device moves the movable contact.

FIG. 1A is a perspective view of an electromagnetic relay including an electromagnet device according to an embodiment of the present disclosure. FIG. 1B is a perspective view of the electromagnetic relay of the above viewed from another direction. FIG. 2 is a sectional view taken along line X1-X1 of FIG. 1A. FIG. 3 is a sectional view taken along line X2-X2 of FIG. 1A. FIG. 4 is a partially enlarged view of the first flange portion and the second flange portion in FIG. FIG. 5 is a partially enlarged view of the first flange portion and the second flange portion in FIG. FIG. 6 is a partially enlarged view of the third flange portion and the fourth flange portion in FIG. FIG. 7 is a cross-sectional view of an electromagnetic relay including the electromagnet device of the first modification.

Embodiments and modifications described below are merely examples of the present disclosure, and the present disclosure is not limited to the embodiments and the modifications, and even if other than the embodiments and the modifications, the present disclosure is not limited to the embodiments and the modifications. Various changes can be made according to the design and the like as long as the technical idea is not deviated. Further, in the following embodiments and modifications, the drawings to be described are schematic diagrams, and the ratio of the size and thickness of each component in the drawings does not necessarily reflect the actual dimensional ratio. Not necessarily.

(Embodiment)
Hereinafter, the electromagnet device 10 and the electromagnetic relay 100 according to the present embodiment will be described with reference to FIGS.

(1) Configuration (1.1) Overall Configuration The electromagnetic relay 100 according to the present embodiment includes a contact device 1 and an electromagnet device 10. The contact device 1 has a pair of fixed terminals 31 and 32 and a movable contact 8 (see FIGS. 2 and 3). The fixed terminals 31 and 32 hold

fixed contacts

311 and 321, respectively. The movable contact 8 holds a pair of

movable contacts

81 and 82.

The electromagnet device 10 includes the mover 13 and the coil 14 (see FIGS. 2 and 3). The electromagnet device 10 attracts the mover 13 by a magnetic field generated in the coil 14 when the coil 14 is energized. The movable contact 8 moves from the open position to the closed position with the suction of the movable element 13. The “open position” in the present disclosure is a position of the movable contact 8 when the

movable contacts

81 and 82 move away from the

fixed contacts

311 and 321. The “closed position” in the present disclosure is a position of the movable contact 8 when the

movable contacts

81 and 82 come into contact with the

fixed contacts

311 and 321.

In the present embodiment, the mover 13 is arranged on the straight line L, and is configured to reciprocate straight along the straight line L (see FIGS. 2 and 3). The coil 14 is configured by a conductive wire (electric wire) wound around a straight line L. That is, the straight line L corresponds to the central axis of the coil 14.

In the present embodiment, a case where the contact device 1 forms an electromagnetic relay 100 together with the electromagnet device 10 as shown in FIGS. 1A and 1B will be described as an example. In the present embodiment, a case where the electromagnetic relay 100 is mounted on an electric vehicle will be described as an example. In this case, the contact device 1 (fixed terminals 31 and 32) is electrically connected to a DC power supply path from the running battery to a load (for example, an inverter).

(1.2) Contact Device Next, the configuration of the contact device 1 will be described.

(2) The contact device 1 includes a pair of fixed terminals 31, 32, a movable contact 8, a housing 4, and a flange 5, as shown in FIGS. The contact device 1 further includes a first yoke 6, a second yoke 7, two

capsule yokes

23 and 24, two arc-extinguishing magnets (permanent magnets) 25 and 26, an insulating plate 41, and a cover 50. The fixed terminal 31 holds the fixed contact 311, and the fixed terminal 32 holds the fixed contact 321. The movable contact 8 is a plate-shaped member made of a conductive metal material. The movable contact 8 holds a pair of

movable contacts

81 and 82.

In the following, for the sake of explanation, the facing direction of the

fixed contacts

311 and 321 and the

movable contacts

81 and 82 is defined as the up-down direction, and the

fixed contacts

311 and 321 side as viewed from the

movable contacts

81 and 82 is defined as the upper side. Further, a direction in which the pair of fixed terminals 31 and 32 (a pair of fixed contacts 311 and 321) are arranged is defined as a left-right direction, and the fixed terminal 32 side as viewed from the fixed terminal 31 is defined as a right side. That is, hereinafter, the upper, lower, left and right in FIG. Hereinafter, a direction orthogonal to both the vertical direction and the horizontal direction (a direction orthogonal to the plane of FIG. 2) will be described as a front-back direction. However, these directions are not intended to limit the usage of the contact device 1 and the electromagnetic relay 100.

One fixed contact 311 is held at one end of one fixed terminal 31, and the other fixed contact 321 is held at one end of the other fixed terminal 32.

(4) The pair of fixed terminals 31, 32 are arranged so as to be arranged in the left-right direction (see FIG. 2). Each of the pair of fixed terminals 31 and 32 is made of a conductive metal material. The pair of fixed terminals 31 and 32 function as terminals for connecting an external circuit (battery and load) to the pair of fixed

contacts

311 and 321. In the present embodiment, the fixed terminals 31 and 32 made of copper (Cu) are used as an example. However, the fixed terminals 31 and 32 are not limited to copper. It may be formed of a conductive material.

Each of the pair of fixed terminals 31 and 32 is formed in a columnar shape having a circular cross section in a plane perpendicular to the vertical direction. Here, each of the pair of fixed terminals 31 and 32 is configured such that the diameter at the upper end (the other end) is larger than the diameter at the lower end (the one end), and the front view is T-shaped. ing. The pair of fixed terminals 31 and 32 are held by the housing 4 with a part (the other end) protruding from the upper surface of the housing 4. Specifically, each of the pair of fixed terminals 31 and 32 is fixed to the housing 4 in a state of penetrating an opening formed in the upper wall of the housing 4.

The movable contact 8 has a thickness in the up-down direction and is formed in a plate shape longer in the left-right direction than in the front-rear direction. The movable contact 8 is disposed below the pair of fixed terminals 31 and 32 such that both ends in the longitudinal direction (left and right directions) face the pair of fixed contacts 311 and 321 (see FIG. 2). In the movable contact 8, a pair of

movable contacts

81 and 82 are provided at a portion facing the pair of fixed contacts 311 and 321 (see FIG. 2).

The movable contact 8 is housed in the housing 4. The movable contact 8 is moved up and down by the electromagnet device 10. Thus, the movable contact 8 moves between the closed position and the open position. FIGS. 2 and 3 show a state in which the movable contact 8 is located at the closed position. In this state, the pair of

movable contacts

81 and 82 held by the movable contact 8 correspond to the corresponding fixed contacts, respectively. Contact 311 and 321. On the other hand, when the movable contact 8 is located at the open position, the pair of

movable contacts

81 and 82 held by the movable contact 8 are separated from the corresponding fixed

contacts

311 and 321 respectively.

Therefore, when the movable contact 8 is in the closed position, a short circuit occurs between the pair of fixed terminals 31 and 32 via the movable contact 8. For example, if the movable contact 8 is in the closed position, the

movable contacts

81 and 82 come into contact with the fixed

contacts

311 and 321. Therefore, the fixed terminal 31 is composed of the fixed contact 311, the movable contact 81, the movable contact 8 and the movable contact 82. And, it is electrically connected to the fixed terminal 32 via the fixed contact 321. Therefore, if the fixed terminal 31 is electrically connected to one of the battery and the load and the fixed terminal 32 is electrically connected to the other, when the movable contact 8 is in the closed position, the contact device 1 A path for supplying DC power from the power supply to the load is formed.

Here, the

movable contacts

81 and 82 only need to be held by the movable contact 8. Therefore, the

movable contacts

81 and 82 may be formed integrally with the movable contact 8 by, for example, stamping out a part of the movable contact 8 or may be formed of a member separate from the movable contact 8, for example, by welding. For example, it may be fixed to the movable contact 8. Similarly, the fixed

contacts

311 and 321 only need to be held by the fixed terminals 31 and 32. Therefore, the fixed

contacts

311 and 321 may be formed integrally with the fixed terminals 31 and 32, or may be formed of a separate member from the fixed terminals 31 and 32, and are fixed to the fixed terminals 31 and 32 by, for example, welding. May be.

The movable contact 8 has a through hole 83 at the center. In the present embodiment, the through hole 83 is formed in the movable contact 8 between the pair of

movable contacts

81 and 82. The through hole 83 penetrates the movable contact 8 in the thickness direction (vertical direction). The through hole 83 is a hole for passing a shaft 15 described later.

The first yoke 6 is a magnetic material, and is formed of, for example, a metal material such as iron. The first yoke 6 is fixed to a tip (upper end) of the shaft 15. The shaft 15 penetrates the movable contact 8 through the through hole 83 of the movable contact 8, and the tip (upper end) of the shaft 15 projects upward from the upper surface of the movable contact 8. Therefore, the first yoke 6 is located above the movable contact 8 (see FIG. 2). Specifically, the first yoke 6 is located on the same side as the fixed

contacts

311 and 321 exist with respect to the movable contact 8 in the moving direction of the movable contact 8. Further, the first yoke 6 may be fixed to the housing 4. That is, the first yoke 6 may be fixed relatively to the fixed

contacts

311 and 321.

The second yoke 7 is a magnetic material, and is formed of, for example, a metal material such as iron. The second yoke 7 is fixed to the lower surface of the movable contact 8 (see FIG. 2). Specifically, in the moving direction of the movable contact 8, the second yoke 7 is opposite to the side of the movable contact 8 on which the fixed

contacts

311 and 321 exist, among the vertical surfaces of the movable contact 8. Is fixed (located) on the surface. As a result, the second yoke 7 moves in the up-down direction along with the up-down movement of the movable contact 8. That is, the second yoke 7 moves relatively to the fixed

contacts

311 and 321.

The second yoke 7 has a through hole 71 at the center. In the present embodiment, the through hole 71 is formed at a position corresponding to the through hole 83 of the movable contact 8. The through hole 71 penetrates the second yoke 7 in the thickness direction (vertical direction). The through hole 71 is a hole for passing the shaft 15 and a contact pressure spring 17 described later.

The second yoke 7 has a pair of projecting portions 72 and 73 (see FIG. 3) projecting upward at both ends in the front-rear direction. In other words, the protruding portions 72 projecting in the same direction as the direction in which the movable contact 8 moves from the open position to the closed position (upward in the present embodiment) are provided at both ends in the front-rear direction on the upper surface of the second yoke 7. 73 are formed.

According to such a shape, the front end face (upper end face) of the front protruding part 72 of the pair of protruding

parts

72, 73 is attached to the front end part of the first yoke 6 (the front end face of the rear protruding part 73). The upper end surfaces are respectively butted against the rear ends of the first yokes 6. Therefore, when a current flows through the movable contact 8, a magnetic flux is generated that passes through a magnetic path formed by the first yoke 6 and the second yoke 7. At this time, for example, the front end of the first yoke 6 and the distal end surface of the protruding portion 73 have an N pole, and the rear end of the first yoke 6 and the distal end surface of the protruding portion 72 have an S pole. A suction force acts between the first yoke 7 and the second yoke 7.

The capsule yokes 23 and 24 are magnetic materials, and are formed of a metal material such as iron, for example. The capsule yokes 23, 24 form a magnetic circuit through which the magnetic flux of the

arc extinguishing magnets

25, 26 passes. The capsule yokes 23 and 24 hold the

arc extinguishing magnets

25 and 26. The capsule yokes 23 and 24 are arranged on both sides in the front-rear direction with respect to the housing 4 so as to surround the housing 4 from both sides in the front-rear direction.

弧 The

arc extinguishing magnets

25 and 26 are arranged so that the same pole (for example, the N pole) is opposed to each other in the left-right direction or the different poles are opposed to each other. The arc-extinguishing

magnets

25 and 26 are arranged on both sides in the left-right direction with respect to the housing 4. The capsule yokes 23 and 24 surround the housing 4 together with the

arc extinguishing magnets

25 and 26. The arc-extinguishing

magnets

25 and 26 are arranged in a direction in which the fixed

contacts

311 and 321 are arranged when viewed from one side of the moving direction of the movable contact 8. When the movable contact 8 moves from the closed position to the open position, a discharge current (arc) is generated between the fixed contact 311 and the movable contact 81 and between the fixed contact 321 and the movable contact 82. The arc-extinguishing

magnets

25 and 26 extend arcs generated between the fixed contact 311 and the movable contact 81 and between the fixed contact 321 and the movable contact 82, respectively. The arc-extinguishing

magnets

25 and 26 may be arranged in a direction orthogonal to the direction in which the fixed

contacts

311 and 321 are arranged when viewed from one of the moving directions of the movable contact 8. In this case, the

arc extinguishing magnets

25 and 26 are arranged so that the same pole (for example, the N pole) faces each other.

The housing 4 is made of ceramic such as aluminum oxide (alumina). The housing 4 is formed in a hollow rectangular parallelepiped shape longer in the left-right direction than in the front-rear direction. The lower surface of the housing 4 is open. The housing 4 houses the pair of fixed

contacts

311 and 321, the movable contact 8, the first yoke 6, and the second yoke 7. A pair of opening holes for passing the pair of fixed terminals 31 and 32 are formed in the upper surface of the housing 4. Each of the pair of opening holes is formed in a circular shape, and penetrates the upper wall of the housing 4 in the thickness direction (vertical direction). The fixed terminal 31 is passed through one opening, and the fixed terminal 32 is passed through the other opening. The pair of fixed terminals 31 and 32 and the housing 4 are joined by brazing.

The housing 4 may be formed in a box shape that accommodates the pair of fixed

contacts

311 and 321 and the movable contact 8, and is not limited to a hollow rectangular parallelepiped as in the present embodiment, but may be, for example, a hollow ellipse. It may have a cylindrical shape or a hollow polygonal column shape. In other words, the box shape here means any shape having a space for accommodating the pair of fixed

contacts

311 and 321 and the movable contact 8 therein, and is not intended to be limited to a rectangular parallelepiped shape. The housing 4 is not limited to being made of ceramic, and may be made of, for example, an insulating material such as glass or resin, or may be made of metal. The housing 4 is preferably made of a non-magnetic material that does not become a magnetic material due to magnetism.

The flange 5 is formed of a non-magnetic metal material. The non-magnetic metal material is, for example, austenitic stainless steel such as SUS304. The flange 5 is formed in a hollow rectangular parallelepiped shape that is long in the left-right direction. The upper and lower surfaces of the flange 5 are open.

For example, the flange 5 is disposed between the housing 4 and the electromagnet device 10 (see FIGS. 2 and 3). The flange 5 is hermetically joined to the housing 4 and a yoke upper plate 111 of the electromagnet device 10 described later. Thereby, the internal space of the contact device 1 surrounded by the housing 4, the flange 5, and the yoke upper plate 111 can be an airtight space. The flange 5 does not have to be non-magnetic, and may be, for example, an alloy mainly composed of iron such as 42 alloy.

The insulating plate 41 is made of synthetic resin and has electrical insulation. The insulating plate 41 is formed in a rectangular plate shape. The insulating plate 41 is located on the side opposite to the side where the fixed

contacts

311 and 321 exist with respect to the movable contact 8 in the moving direction of the movable contact 8. The insulating plate 41 prevents a short circuit due to an arc generated between the movable contact 8 and the fixed

contacts

311 and 321.

The insulating plate 41 has a through hole 42 at the center. In the present embodiment, the through hole 42 is formed at a position corresponding to the through hole 83 of the movable contact 8. The through hole 42 penetrates the insulating plate 41 in the thickness direction (vertical direction). The through hole 42 is a hole through which the shaft 15 passes.

The cover 50 is made of a non-magnetic material and is formed in a hollow rectangular parallelepiped shape that is longer in the left-right direction than in the front-rear direction. The cover 50 is disposed so as to expose the swaged portion 35 of the fixed terminal 31 and the swaged portion 36 of the fixed terminal 32 and cover the housing 4. The front surface of the cover 50 is formed in a step shape (see FIG. 1A). The cover 50 holds the capsule yokes 23 and 24 and the arc-extinguishing

magnets

25 and 26.

The contact device 1 further includes bus bars 21 and 22.

The

busbars

21 and 22 are made of a conductive metal material (for example, copper or a copper alloy). In the present embodiment, the bus bars 21 and 22 are made of copper as an example. The bus bars 21 and 22 are formed in a strip shape. In the present embodiment, the bus bars 21 and 22 are formed by bending a metal plate. One end of the bus bar 21 is electrically connected to, for example, the fixed terminal 31. The other end of the bus bar 21 is electrically connected to, for example, a running battery. One end of the bus bar 22 is electrically connected to, for example, the fixed terminal 32. The other end of the bus bar 22 is electrically connected to, for example, a load.

The bus bar 21 is mechanically connected to the fixed terminal 31 (see FIG. 2). Specifically, the bus bar 21 is caulked to the fixed terminal 31 at the caulked portion 35 of the fixed terminal 31.

The bus bar 22 is mechanically connected to the fixed terminal 32 (see FIG. 2). Specifically, the bus bar 22 is caulked to the fixed terminal 32 at the caulked portion 36 of the fixed terminal 32.

(1.3) Electromagnet Device Next, the configuration of the electromagnet device 10 will be described.

The electromagnet device 10 is located on the side opposite to the side where the fixed

contacts

311 and 321 exist with respect to the movable contact 8 in the moving direction of the movable contact 8 of the contact device 1. The movable contact 8 is configured to be moved by force.

The electromagnet device 10 includes a stator 12, a mover 13, a coil 14, and a shaft 15, as shown in FIGS. The electromagnet device 10 attracts the mover 13 to the stator 12 by a magnetic field generated in the coil 14 when the coil 14 is energized, and moves the mover 13 toward the stator 12. The shaft 15 is fixed to the mover 13, and moves the movable contact 8 with the movement of the mover 13. That is, the electromagnet device 10 moves the movable contact 8 by driving the shaft 15 that moves the movable contact 8 in the axial direction of the coil 14.

The electromagnet device 10 includes, in addition to the stator 12, the mover 13, the coil 14, and the shaft 15, a yoke 11 including a yoke upper plate 111, a cylindrical body 16, a contact pressure spring 17, and a return spring 18. , A coil bobbin 19.

The stator 12 is a stationary core formed in a cylindrical shape that protrudes from the center of the yoke upper plate 111 toward the mover 13. The stator 12 is made of a magnetic material. One end of the stator 12 is fixed to the yoke upper plate 111.

The mover 13 is a movable iron core formed in a columnar shape. The mover 13 is made of a magnetic material. The mover 13 is arranged to face the stator 12. The mover 13 is arranged on the side opposite to the movable contact 8 with respect to the stator 12. The mover 13 is configured to be vertically movable. The mover 13 moves between an excitation position where one end surface thereof is in contact with the stator 12 (see FIGS. 2 and 3) and a non-excitation position where one end surface is away from the stator 12. The “excitation position” in the present disclosure is the position of the mover 13 when the coil 14 is energized. Further, the “non-excitation position” in the present disclosure is a position of the mover 13 when the coil 14 is not energized.

The cylindrical body 16 is formed in a cylindrical shape with a bottom and an open end. The cylinder 16 is made of a non-magnetic material. The cylindrical body 16 houses the stator 12 and the mover 13 in a state of being arranged in the up-down direction. One end of the stator 12 protrudes from the opening of the cylindrical body 16. The periphery of the opening of the cylinder 16 is joined to the yoke upper plate 111. Thereby, the cylinder 16 restricts the moving direction of the mover 13 in the vertical direction, and defines the non-excited position of the mover 13. The cylindrical body 16 is air-tightly joined to the lower surface of the yoke upper plate 111. Thus, for example, even if a through hole is formed in the yoke upper plate 111 of the electromagnet device 10, the contact device surrounded by the housing 4, the flange 5 of the contact device 1 and the yoke upper plate 111 of the electromagnet device 10. 1, the airtightness of the internal space can be ensured.

The coil bobbin 19 is made of a synthetic resin and has electrical insulation. The coil bobbin 19 has a shaft portion 190.

The shaft portion 190 is formed in a cylindrical shape whose central axis is along the moving direction of the movable contact 8. The coil 14 is wound around the shaft 190. In other words, the coil 14 is configured by winding an electric wire (for example, a copper wire) around the outer peripheral surface of the shaft portion 190 of the coil bobbin 19.

The coil 14 is arranged in such a direction that the axial direction along the central axis coincides with the vertical direction. That is, the axial direction of the coil 14 coincides with the moving direction of the movable contact 8, the movable element 13, and the shaft 15. The coil 14 has a first winding and a second winding.

The first winding is configured by winding an electric wire around the outer peripheral surface of the shaft portion 190 when viewed from one side (above) in the moving direction of the movable contact 8. One end of the first winding is electrically connected to the coil terminal 141 by being wound around the coil terminal 141, and the other end is electrically connected to the coil terminal 142 by being wound around the coil terminal 142. .

The second winding is formed by winding the electric wire around the outer peripheral surface of the shaft portion 190 when viewed from one side (above) in the moving direction of the movable contact 8. One end of the second winding is electrically connected to the coil terminal 141 by being wound around the coil terminal 141, and the other end is electrically connected to the coil terminal 143 by being wound around the coil terminal 143. .

The cylindrical body 16 is arranged so as to pass through the inside of the shaft portion 190. That is, the stator 12 and the mover 13 are arranged inside the coil 14. Therefore, the stator 12 and the mover 13 are magnetized by the magnetic field generated by the coil 14.

The yoke 11 is formed in a frame shape and is arranged so as to surround the coil 14. The yoke 11 is made of a magnetic material. The yoke 11 forms, together with the stator 12 and the mover 13, a part of a path (magnetic circuit) through which a magnetic flux generated when the coil 14 is energized passes.

The yoke 11 has a yoke upper plate 111 and a main body 112.

The main body 112 is formed in a substantially U shape when viewed from the front-rear direction, and has a pair of

yoke side plates

113 and 114 and a yoke lower plate 115. The pair of

yoke side plates

113 and 114 oppose each other in the direction in which the fixed contact 311 and the fixed contact 321 are arranged (left-right direction). The yoke lower plate 115 is formed so as to connect the lower ends of the pair of

yoke side plates

113 and 114 to each other.

The yoke upper plate 111 is formed in a rectangular plate shape. The yoke upper plate 111 is arranged so as to connect the upper ends of the pair of

yoke side plates

113 and 114 to each other. The yoke upper plate 111 and the yoke lower plate 115 are opposed to each other in the moving direction (vertical direction) of the movable contact 8.

The coil 14 is arranged in a space surrounded by the yoke upper plate 111 and the main body 112 (a pair of

yoke side plates

113 and 114 and a yoke lower plate 115).

貫通 A through hole 1151 is formed at the center of the yoke lower plate 115. A bush 116 penetrates the through hole 1151. The bush 116 is formed in a cylindrical shape. The bush 116 is made of a magnetic material. The bush 116 is located between the shaft portion 190 and the cylindrical body 16 inside the shaft portion 190 of the coil bobbin 19 and surrounds the mover 13 via the cylindrical body 16. The bush 116, together with the yoke 11, the stator 12, and the mover 13, forms a part of the path of the magnetic flux generated by the coil 14.

The contact pressure spring 17 is disposed between the movable contact 8 and the insulating plate 41. The contact pressure spring 17 is a coil spring that urges the movable contact 8 toward the fixed contacts 311 and 321 (see FIG. 2).

The return spring 18 is at least partially disposed inside the stator 12. The return spring 18 is a coil spring that biases the mover 13 to a non-excited position. One end of the return spring 18 is connected to one end surface of the mover 13, and the other end of the return spring 18 is connected to the yoke upper plate 111 (see FIG. 2).

The shaft 15 is made of a non-magnetic material. The shaft 15 is formed in a round bar shape extending vertically. The shaft 15 has a through hole 83, a through hole 71, an inside of the contact pressure spring 17, a through hole 42, a through hole formed in the center of the yoke upper plate 111, an inside of the stator 12, and an inside of the return spring 18. , The lower end of which is fixed to the mover 13. The first yoke 6 is fixed to the tip of the shaft 15. The shaft 15 transmits the driving force generated by the electromagnet device 10 to the contact device 1.

Here, when the shaft 15 is in contact with the inner peripheral surface of the through hole 83 of the movable contact 8, the shaft 15 and the movable contact 8 are electrically connected to have substantially the same potential. In this case, the movable contact 8 and the yoke 11 (the yoke upper plate 111, the main body 112) are electrically connected to each other via the shaft 15, the mover 13, the cylinder 16, the bush 116, and the like. Potential. Therefore, when the movable contact 8 is in the closed position and makes contact with the pair of fixed

contacts

311 and 321 and a potential difference is generated between the movable contact 8 and the circuit to which the coil terminals 141 to 143 are connected, the connection is made. A potential difference also occurs between the iron 11 and the circuit to which the coil terminals 141 to 143 are connected.

The coil bobbin 19 has a plurality of flange portions in addition to the shaft portion 190. The plurality of flange portions include a first flange portion 191 and a second flange portion 192. The first flange portion 191 and the second flange portion 192 are provided on one end side (the lower end side in the present embodiment) of the coil 14 in the axial direction (vertical direction) of the coil 14. The first flange portion 191 and the second flange portion 192 are formed so as to protrude from the outer peripheral surface of the shaft portion 190 in a direction orthogonal to the axial direction of the coil 14. The term "orthogonal" used herein means that the angle between the axial direction of the coil 14 and the protruding direction of the first flange portion 191 and the second flange portion 192 is not limited to a strictly right angle. It may be shifted in the range.

The second flange 192 is provided on the opposite side (lower side) of the coil 14 with respect to the first flange 191 in the axial direction of the coil 14. In other words, the first flange portion 191 is provided closer to the coil 14 than the second flange portion 192 in the axial direction of the coil 14.

The first flange portion 191 and the second flange portion 192 are formed apart from each other in the axial direction of the coil 14. That is, the first flange portion 191 and the second flange portion 192 face each other with a gap in the axial direction of the coil 14. The first flange portion 191 and the second flange portion 192 protrude from the shaft portion 190. Therefore, the first flange portion 191 and the second flange portion 192 are connected (connected) through a part of the shaft portion 190.

In the present embodiment, the plurality of flange portions (the first flange portion 191 and the second flange portion 192) are a part of the coil bobbin 19. That is, the plurality of flange portions (the first flange portion 191 and the second flange portion 192) are formed integrally with the coil bobbin 19. Therefore, the plurality of flange portions (the first flange portion 191 and the second flange portion 192) are made of synthetic resin and have electrical insulation.

The outer shape of the first flange portion 191 as viewed from the axial direction of the coil 14 is rectangular. The dimension of the first flange portion 191 in the direction (left-right direction) where the pair of

yoke side plates

113 and 114 face each other is shorter than the dimension between the pair of yoke side plates 113 and 114 (see FIG. 2). The first flange portion 191 has a space between both the pair of

yoke side plates

113 and 114 in the direction in which the pair of

yoke side plates

113 and 114 face each other. In other words, the first flange portion 191 is apart from the yoke 11 in a direction orthogonal to the axial direction of the coil 14.

The first flange 191 determines the position of one end (lower end) of the coil 14 in the axial direction of the coil 14. In the present embodiment, the surface (upper surface) of the first flange portion 191 on the coil 14 side is in contact with one end (lower end) of the coil 14 in the axial direction of the coil 14.

The first flange portion 191 holds the coil terminals 141 to 143 by insert molding. Each of the coil terminals 141 to 143 is formed in an L-shape. Each of the coil terminals 141 to 143 has one end electrically connected to the coil 14 protruding from the front end of the first flange 191 and extending upward, and the other end extending from the rear end of the first flange 191. It protrudes (see FIGS. 1A and 1B). The coil terminals 141 to 143 are arranged in a direction (left-right direction) in which the pair of

yoke side plates

113 and 114 face each other. The central coil terminal 142 is bent in the first flange portion 191 to avoid a space inside the shaft portion 190.

２The second flange 192 is provided below the first flange 191. In other words, the second flange portion 192 is provided at a position farther from the coil 14 than the first flange portion 191 in the axial direction of the coil 14. That is, the second flange portion 192 is provided at a position farthest from the coil 14 in the axial direction of the coil 14 among the plurality of flange portions (the first flange portion 191 and the second flange portion 192). In the present embodiment, the second flange portion 192 is formed so as to protrude from the lower end of the shaft portion 190.

外形 The outer shape of the second flange portion 192 viewed from the axial direction of the coil 14 is such that the central portion is circular, and the pair of

yoke side plates

113 and 114 extend from the central portion in a rectangular shape in the direction facing each other. When viewed from the axial direction of the coil 14, the outer shape of the second flange portion 192 is substantially the same as the outer shape of the yoke lower plate 115. The coil bobbin 19 is arranged such that the second flange portion 192 overlaps the yoke lower plate 115 in the axial direction of the coil 14.

(4) The dimension of the second flange 192 is longer than the dimension of the first flange 191 in the direction in which the pair of

yoke side plates

113 and 114 face each other (left-right direction) (see FIG. 2). In the direction (left-right direction) where the pair of

yoke side plates

113 and 114 face each other, the dimension between the second flange portion 192 and both of the pair of

yoke side plates

113 and 114 is equal to the first flange portion 191 and the pair of yoke side plates. It is shorter than the dimension between both of the

iron side plates

113 and 114. That is, at least a part of the second flange portion 192 protrudes from the first flange portion 191 in a direction orthogonal to the axial direction of the coil 14. Specifically, the second flange portion 192 protrudes from the first flange portion 191 on the side where the yoke 11 exists in a direction orthogonal to the axial direction of the coil 14.

In the present embodiment, both ends of the second flange portion 192 in the direction in which the pair of

yoke side plates

113 and 114 face each other are close to the pair of

yoke side plates

113 and 114. Thereby, the second flange portion 192 limits the rotation of the coil bobbin 19. Here, the rotation of the coil bobbin 19 is a rotation about the central axis of the coil bobbin 19 (the central axis of the coil 14) as a rotation axis. The end of the second flange portion 192 in the direction orthogonal to the axial direction of the coil 14 (the end in the direction in which the pair of

yoke side plates

113 and 114 opposes) comes into contact with the yoke 11, thereby forming the coil bobbin 19. Limit rotation. The second flange portion 192 is provided such that an end in a direction orthogonal to the axial direction of the coil 14 (an end in a direction in which the pair of

yoke side plates

113 and 114 are opposed) comes into contact with the yoke 11. You may.

The coil bobbin 19 further includes a third flange 193 and a fourth flange 194 in addition to the plurality of flanges (the first flange 191 and the second flange 192). The third flange portion 193 and the fourth flange portion 194 are provided on the other end side (the upper end side in the present embodiment) of the coil 14 in the axial direction (vertical direction) of the coil 14. That is, the third flange portion 193 and the fourth flange portion 194 are provided on the opposite side of the coil 14 from the first flange portion 191 and the second flange portion 192. The third flange portion 193 and the fourth flange portion 194 are formed so as to protrude from the outer peripheral surface of the shaft portion 190 in a direction orthogonal to the axial direction of the coil 14. The term “orthogonal” as used herein is not limited to the case where the angle between the axial direction of the coil 14 and the projecting directions of the third flange portion 193 and the fourth flange portion 194 is strictly a right angle. It may be shifted in the range.

The fourth flange 194 is provided on the opposite side (upper side) of the coil 14 with respect to the third flange 193 in the axial direction of the coil 14. In other words, the third flange 193 is provided closer to the coil 14 than the fourth flange 194 in the axial direction of the coil 14.

The third flange 193 and the fourth flange 194 are formed apart from each other in the axial direction of the coil 14. That is, the third flange portion 193 and the fourth flange portion 194 face each other with a gap in the axial direction of the coil 14. The third flange 193 and the fourth flange 194 protrude from the shaft 190. Therefore, the third flange portion 193 and the fourth flange portion 194 are connected (connected) through a part of the shaft portion 190.

In the present embodiment, the third flange 193 and the fourth flange 194 are a part of the coil bobbin 19. That is, the third flange portion 193 and the fourth flange portion 194 are integrally formed with the coil bobbin 19. Therefore, the third flange portion 193 and the fourth flange portion 194 are made of synthetic resin and have electrical insulation.

外形 The third flange portion 193 has a circular outer shape when viewed from the axial direction of the coil 14. The dimension of the third flange portion 193 in the direction (left-right direction) where the pair of

yoke side plates

113 and 114 face each other is shorter than the dimension between the pair of yoke side plates 113 and 114 (see FIG. 2). The third flange portion 193 has a space between both the pair of

yoke side plates

113 and 114 in the direction in which the pair of

yoke side plates

113 and 114 face each other. In other words, the third flange portion 193 is apart from the yoke 11 in a direction orthogonal to the axial direction of the coil 14.

The third flange 193 determines the position of the other end (upper end) of the coil 14 in the axial direction of the coil 14. In the present embodiment, the surface (lower surface) of the third flange portion 193 on the coil 14 side is in contact with the other end (upper end) of the coil 14 in the axial direction of the coil 14. That is, the coil 14 is disposed so as to be sandwiched between the first flange portion 191 and the third flange portion 193 in the axial direction of the coil 14.

４The fourth flange 194 is provided above the third flange 193. In other words, the fourth flange portion 194 is provided at a position farther from the coil 14 than the third flange portion 193 in the axial direction of the coil 14. In the present embodiment, the fourth flange 194 is formed to protrude from the upper end of the shaft 190.

外形 The fourth flange portion 194 has a circular outer shape as viewed from the axial direction of the coil 14. When viewed from the axial direction of the coil 14, the outer shape of the fourth flange portion 194 is substantially the same as the outer shape of the third flange portion 193. Therefore, similarly to the third flange portion 193, the fourth flange portion 194 has a dimension in a direction (left-right direction) in which the pair of

yoke side plates

113 and 114 are opposed to each other. Shorter than the dimensions (see FIG. 2). The fourth flange portion 194 has a space between both the pair of

yoke side plates

113 and 114 in the direction in which the pair of

yoke side plates

113 and 114 face each other. In other words, the fourth flange portion 194 is apart from the yoke 11 in a direction orthogonal to the axial direction of the coil 14.

(2) Operation Next, the operation of the electromagnetic relay 100 having the above-described configuration will be briefly described.

When the coil 14 is not energized (when not energized), no magnetic attraction force is generated between the mover 13 and the stator 12, and the mover 13 is moved to the non-excited position by the spring force of the return spring 18. Located in. At this time, the shaft 15 has been pulled down. The upward movement of the movable contact 8 is restricted by the shaft 15. As a result, the movable contact 8 is located at the open position which is the lower end position in the movable range. Therefore, the pair of

movable contacts

81 and 82 are separated from the pair of fixed

contacts

311 and 321 and the contact device 1 is opened. In this state, the conduction between the pair of fixed terminals 31 and 32 is non-conductive.

On the other hand, when current is supplied to both the first winding and the second winding of the coil 14, a magnetic flux is generated inside the coil 14 (the first winding and the second winding). As a result, the stator 12 and the mover 13 are magnetized, and a magnetic attraction force is generated between the mover 13 and the stator 12. Accordingly, the mover 13 is pulled upward against the spring force of the return spring 18 and moves to the excitation position. At this time, since the shaft 15 is pushed upward, the upward movement restriction of the movable contact 8 by the shaft 15 is released. When the contact pressure spring 17 urges the movable contact 8 upward, the movable contact 8 moves to the closed position, which is the upper end position in the movable range. Therefore, the pair of

movable contacts

81 and 82 come into contact with the pair of fixed

contacts

311 and 321, and the contact device 1 is closed. In this state, since the contact device 1 is in the closed state, conduction between the pair of fixed terminals 31 and 32 is established.

接点 By turning off the coil 14 (the first winding and the second winding), the contact device 1 changes from the closed state to the open state.

As described above, the electromagnet device 10 controls the attraction force acting on the mover 13 by switching the energized state of the coil 14, and moves the mover 13 in the vertical direction, thereby opening and closing the contact device 1. And a driving force for switching between. In the present embodiment, the electromagnetic relay 100 is a so-called normally-off type in which the movable contact 8 is located at the open position when the coil 14 is not energized. Therefore, when the mover 13 is located at the non-excitation position, the contact device 1 is in the open state, and when the mover 13 is at the excitation position, the contact device 1 is in the closed state.

(3) Advantages The advantages of the electromagnet device 10 having the first to fourth flange portions 191 to 194 will be described with reference to FIGS.

As described above, the yoke 11 is electrically connected to the movable contact 8 via the shaft 15 and the like, and has substantially the same potential. On the other hand, the voltage applied to the coil 14 is lower than the voltage applied to the movable contact 8. Therefore, it is necessary to secure an electrical insulation distance between the coil 14 and the yoke 11.

In the electromagnet device 10 of the present embodiment, the first flange portion 191 to the fourth flange portion 194 increase the insulation distance between the coil 14 and the yoke 11 along the surface of the electrical insulator (coil bobbin 19). be able to.

のうち Of the insulation distances along the surface of the electrical insulator between the coil 14 and the yoke 11, the shortest distance is referred to as the creepage distance. Here, the creepage distance means the shortest distance along the surface of the electrical insulator between the two conductors.

The coil 14 is electrically connected to each of the coil terminals 141 to 143 by being wound around one end of each of the coil terminals 141 to 143. One end of each of the coil terminals 141 to 143 protrudes from the front end of the first flange 191 (see FIG. 1A). The yoke lower plate 115 of the yoke 11 has a central portion projecting forward. Therefore, in the electromagnet device 10 of the present embodiment, the shortest distance between the coil terminal 142 and the yoke lower plate 115 along the surfaces of the first flange portion 191 and the second flange portion 192 is the creepage distance (FIG. 4 arrow A1). FIG. 4 is a partially enlarged view of the first flange portion and the second flange portion in FIG. Here, as shown in FIG. 1B, the other end of the coil terminal 142 protruding from the rear end of the first flange 191 is shifted from the left-right central part of the first flange 191. Therefore, the shortest distance between the other end 142 b of the coil terminal 142 protruding from the rear end of the first flange 191 and the yoke lower plate 115 is the length of the coil terminal 142 protruding from the front end of the first flange 191. Is longer than the shortest distance (creepage distance) between the one end 142a of the first member 142 and the yoke lower plate 115.

The first flange portion 191 and the second flange portion 192 face each other with a gap in the axial direction of the coil 14. Due to this gap, the creepage distance includes a distance along each of the lower surface of the first flange portion 191 and the upper surface of the second flange portion 192. Thereby, in the electromagnet device 10 of the present embodiment, the one end portion of the coil 14 in the axial direction of the coil 14 has a smaller distance between the coil 14 and the yoke 11 than the configuration in which the flange portion of the coil bobbin 19 is one. The insulation distance (creepage distance) along the surface of the electrical insulator becomes longer.

As shown in FIG. 2, the second flange portion 192 projects more than the first flange portion 191 in the direction in which the pair of

yoke side plates

113 and 114 face each other. Therefore, the first flange portion 191 has a space between both the pair of

yoke side plates

113 and 114 in the direction in which the pair of

yoke side plates

113 and 114 face each other. The space shortest distance between the end of the first flange portion 191 and the yoke side plate 114 (or 113) is longer than a distance that is not regarded as a creepage distance between the coil 14 and the yoke side plate 114 (or 113). Is set. Therefore, at one end side (lower end side) of the coil 14, the shortest distance along the surface of the electrical insulator between the coil 14 and the yoke side plate 114 (or 113), that is, the creepage distance is equal to the first flange portion 191. The distance along each of the lower surface and the upper surface of the second flange portion 192 is included (see the arrow A2 in FIG. 5). FIG. 5 is a partially enlarged view of the first flange portion and the second flange portion in FIG. Therefore, the surface of the electrical insulator between the coil 14 and the yoke side plate 114 (or 113) is more in comparison with the configuration in which one flange portion of the coil bobbin 19 is provided at one end side of the coil 14 in the axial direction of the coil 14. The insulation distance along is longer.

As shown in FIG. 2, in the direction in which the pair of

yoke side plates

113 and 114 face each other, the third flange portion 193 and the fourth flange portion 194 are located between both the pair of

yoke side plates

113 and 114. There is space. The shortest distance between the end of each of the third flange portion 193 and the fourth flange portion 194 and the yoke side plate 114 (or 113) is the creepage distance between the coil 14 and the yoke side plate 114 (or 113). Is set to a distance that is not regarded as Therefore, on the other end side (upper end side) of the coil 14, the shortest distance along the surface of the electrical insulator between the coil 14 and the yoke side plate 114 (or 113), that is, the creepage distance is the third flange portion 193. 6 and the distance along the lower surface of the fourth flange portion 194 (see arrow A3 in FIG. 6). FIG. 6 is a partially enlarged view of the third flange portion and the fourth flange portion in FIG. Therefore, on the other end side of the coil 14 in the axial direction of the coil 14, as compared with a configuration in which the coil bobbin 19 has a single flange portion, the coil bobbin 19 extends along the surface of the electrical insulator between the coil 14 and the yoke upper plate 111. Insulation distance becomes longer.

In the electromagnet device 10 of the present embodiment, the second flange portion 192 is close to both the pair of

yoke side plates

113 and 114 in the direction in which the pair of

yoke side plates

113 and 114 face each other. Thereby, the second flange portion 192 can restrict rotation of the coil bobbin 19 about the center axis of the coil bobbin 19 as a rotation axis by contacting a part of the yoke 11. Since the second flange portion 192 is provided at a position farthest from the coil 14 in the axial direction of the coil 14, even if the second flange portion 192 contacts the yoke 11, the influence on the insulation distance is small.

(4) Modifications Modifications will be listed below. The modifications described below can be applied in appropriate combinations with the above embodiments.

(4.1) First Modification In the electromagnet device 10 of the above-described embodiment, the coil bobbin 19 includes a first flange portion 191 and a second flange portion 192 on both ends of the coil 14 in the axial direction of the coil 14, Although the flange portion 193 and the fourth flange portion 194 are provided, the invention is not limited thereto.

As shown in FIG. 7, the coil bobbin 19 may have the fourth flange 194 omitted. That is, the coil bobbin 19 is provided with only one flange portion (third flange portion 193) on the side opposite to the first flange portion 191 and the second flange portion 192 with respect to the coil 14 in the axial direction of the coil 14. ing. The third flange portion 193 is provided closer to the coil 14 than the upper end of the coil bobbin 19. Therefore, the shortest distance along the surface of the electric insulator between the coil 14 and the yoke upper plate 111 includes the distance along the upper surface of the third flange portion 193, and the insulation distance can be secured. it can.

(4.2) Other Modifications In the above embodiment, two flange portions (the first flange portion 191 and the second flange portion 192) are provided on one end side of the coil 14 in the axial direction of the coil 14. Further, more flange portions may be provided. For example, in the axial direction of the coil 14, another flange portion between the first flange portion 191 and the second flange portion 192 faces the first flange portion 191 and the second flange portion 192 with a gap. It may be provided.

In addition to the third flange portion 193 and the fourth flange portion 194, another flange portion may be provided on the other end side of the coil 14 in the axial direction of the coil 14. For example, in the axial direction of the coil 14, another flange portion between the third flange portion 193 and the fourth flange portion 194 faces the third flange portion 193 and the fourth flange portion 194 with a gap therebetween. It may be provided.

In the above embodiment, the first flange portion 191 and the second flange portion 192 are configured integrally with the coil bobbin 19, but the present invention is not limited to this configuration. The first flange portion 191 and the second flange portion 192 may be formed as separate members from the coil bobbin 19 and may be connected to the coil bobbin 19. Further, the third flange portion 193 and the fourth flange portion 194 are formed integrally with the coil bobbin 19, but the present invention is not limited to this configuration. The third flange portion 193 and the fourth flange portion 194 may be formed as separate members from the coil bobbin 19 and may be connected to the coil bobbin 19.

In the above-described embodiment, the second flange portion 192 is configured to restrict rotation of the coil bobbin 19 by being in contact with the yoke 11, but is not limited to this configuration. The second flange portion 192 may be configured to restrict rotation of the coil bobbin 19 by contacting a member different from the yoke 11. Further, on one end side (lower end side) of the coil 14, a flange portion different from the second flange portion 192 may be configured to limit the rotation of the coil bobbin 19. For example, the first flange portion 191 may be configured to restrict rotation of the coil bobbin 19 by being in contact with an electrical insulating member different from the yoke 11. Further, even if at least one flange portion (third flange portion 193, fourth flange portion 194) provided on the other end side (upper end side) of the coil 14 is configured to limit the rotation of the coil bobbin 19. Good.

In the above embodiment, the electromagnetic relay 100 is a normally-off type electromagnetic relay, but may be a normally-on type electromagnetic relay.

In the above embodiment, the number of the movable contacts held by the movable contact 8 of the contact device 1 is two, but is not limited to this configuration. The number of movable contacts held by the movable contact 8 may be one, or three or more. Similarly, the number of fixed terminals (and fixed contacts) of the contact device 1 is not limited to two, but may be one or three or more.

The electromagnetic relay 100 according to the above-described embodiment is a holderless electromagnetic relay, but is not limited to this configuration, and may be a holder-equipped electromagnetic relay. Here, the holder is, for example, a rectangular cylindrical shape having both sides opened in the left-right direction, and the holder is combined with the movable contact 8 so that the movable contact 8 penetrates the holder in the left-right direction. A contact pressure spring 17 is arranged between the lower wall of the holder and the movable contact 8. That is, the center of the movable contact 8 in the left-right direction is held by the holder. The upper end of the shaft 15 is fixed to the holder. When the coil 14 is energized, the shaft 15 is pushed upward, so that the holder moves upward. Along with this movement, the movable contact 8 moves upward, and positions the pair of

movable contacts

81 and 82 at the closed position where the movable contacts 8 contact the pair of fixed

contacts

311 and 321.

The contact device 1 of the above embodiment is a plunger type contact device, but may be a hinge type contact device.

Although the bus bar in the above embodiment is mechanically connected to the fixed terminals 31 and 32 by being caulked to the fixed terminals 31 and 32, the bus bar is mechanically connected to the fixed terminals 31 and 32 by screwing. Is also good.

In the contact device 1 of the above embodiment, the first yoke 6, the second yoke 7, the arc-extinguishing

magnets

25 and 26, and the capsule yokes 23 and 24 are not essential components.

(Summary)
An electromagnet device (10) according to a first aspect includes a coil bobbin (19), a coil (14), a yoke (11), and a plurality of flange portions. The coil (14) is wound around a coil bobbin (19). The yoke (11) forms a part of the path of the magnetic flux generated by the coil (14). The plurality of flange portions have electrical insulation properties, are provided on one end side of the coil (14) in the axial direction of the coil (14), and face each other with a gap in the axial direction. The plurality of flange portions include a first flange portion (191) and a second flange portion (192). The second flange portion (192) is provided on the opposite side of the first flange portion (191) from the coil (14) in the axial direction.

According to this aspect, it is possible to extend the insulation distance between the coil (14) and the yoke (11) along the surface of the electrical insulator.

In the electromagnet device (10) according to the second aspect, in the first aspect, at least a portion of the second flange portion (192) protrudes beyond the first flange portion (191) in a direction orthogonal to the axial direction. .

では In the electromagnet device (10) according to the third aspect, in the first or second aspect, the plurality of flange portions are integrally formed with the coil bobbin (19).

According to this aspect, the configurations of the coil bobbin (19) and the plurality of flange portions can be simplified.

電 The electromagnet device (10) according to the fourth aspect, in any one of the first to third aspects, further comprises at least a third flange portion (193) and a fourth flange portion (194). The third flange portion (193) and the fourth flange portion (194) have electrical insulation properties, are provided on the other end side of the coil (14) in the axial direction, and face each other with a gap in the axial direction. The fourth flange portion (194) is provided on the side opposite to the coil (14) with respect to the third flange portion (193) in the axial direction.

では In the electromagnet device (10) according to the fifth aspect, in the fourth aspect, the third flange portion (193) and the fourth flange portion (194) are integrally formed with the coil bobbin (19).

According to this configuration, the configurations of the coil bobbin (19), the third flange portion (193), and the fourth flange portion (194) can be simplified.

では In the electromagnet device (10) according to the sixth aspect, in any of the first to fifth aspects, any one of the plurality of flange portions restricts rotation of the coil bobbin (19).

According to this configuration, the rotation of the coil bobbin (19) can be restricted.

In the electromagnet device (10) according to the seventh aspect, in the sixth aspect, the second flange portion (192) is provided at a position farthest from the coil (14) in the axial direction among the plurality of flange portions. . One flange portion is a second flange portion (192).

According to this aspect, the second flange portion (192) can also have a function of restricting the rotation of the coil bobbin (19).

In the electromagnet device (10) according to the eighth aspect, in any one of the first to seventh aspects, the first flange portion (191) holds a coil (14) terminal electrically connected to the coil (14). I do.

According to this aspect, it is possible to extend the insulation distance between the coil (14) terminal and the yoke (11) along the surface of the electrical insulator.

電磁 An electromagnetic relay according to a ninth aspect includes the electromagnet device (10) according to any of the first to eighth aspects, fixed contacts (311, 321), and a movable contact (8). The movable contact (8) has a movable contact (81, 82), and a closed position where the movable contact (81, 82) contacts the fixed contact (311, 321) and the movable contact (81, 82) is a fixed contact. (311, 321) to move to an open position away from it. The electromagnet device (10) moves the movable contact (8).

According to this aspect, in the electromagnet device (10), the insulation distance between the coil (14) and the yoke (11) along the surface of the electrical insulator can be extended.

In the electromagnetic relay according to the tenth aspect, in the ninth aspect, the electromagnet device (10) drives a shaft (15) that moves the movable contact (8) in the axial direction.

DESCRIPTION OF SYMBOLS 10 Electromagnet apparatus 11 Yoke 14 Coil 15 Shaft 19 Coil bobbin 191 First flange 192 Second flange 193 Third flange 194

Fourth flange

311, 321

Fixed contacts

81, 82 Movable contacts 8 Movable contacts

Claims

A coil bobbin,
A coil wound on the coil bobbin;
A yoke that forms part of the path of the magnetic flux generated by the coil,
It has electrical insulation, is provided on one end side of the coil in the axial direction of the coil, and comprises a plurality of flange portions facing each other with a gap in the axial direction,
The plurality of flange portions,
A first flange portion,
A second flange portion provided on the opposite side to the coil with respect to the first flange portion in the axial direction.
Electromagnet device.
The second flange portion at least partially protrudes from the first flange portion in a direction orthogonal to the axial direction.
The electromagnet device according to claim 1.
The plurality of flange portions are formed integrally with the coil bobbin,
The electromagnet device according to claim 1.
Further comprising at least a third flange portion and a fourth flange portion, which have electrical insulation properties, are provided on the other end side of the coil in the axial direction, and face each other with a gap in the axial direction;
The fourth flange portion is provided on the opposite side to the coil with respect to the third flange portion in the axial direction.
The electromagnet device according to any one of claims 1 to 3.
The third flange portion and the fourth flange portion are integrally formed with the coil bobbin.
The electromagnet device according to claim 4.
The electromagnet device according to any one of claims 1 to 5, wherein any one of the plurality of flange portions limits rotation of the coil bobbin.
The second flange portion is provided at a position farthest from the coil in the axial direction among the plurality of flange portions,
The one flange portion is the second flange portion,
An electromagnet device according to claim 6.
The first flange portion holds a coil terminal electrically connected to the coil;
The electromagnet device according to any one of claims 1 to 7.
An electromagnet device according to any one of claims 1 to 8,
Fixed contacts,
A movable contact having a movable contact, wherein the movable contact moves between a closed position where the movable contact contacts the fixed contact and an open position where the movable contact separates from the fixed contact;
The electromagnet device moves the movable contact,
Electromagnetic relay.
The electromagnet device drives a shaft that moves the movable contact in the axial direction,
An electromagnetic relay according to claim 9.