JP2019139885A - Electromagnetic device and magnetic relay - Google Patents

Abstract

To provide an electromagnet device and a magnetic relay capable of controlling multiple devices becoming drive objects.SOLUTION: An electromagnet device 10 includes an exciting coil 14, first and second stators 12a, 12b, first and second needles 13a, 13b, a first yoke 11a and a second yoke 11b. The first yoke 11a constitutes a first magnetic circuit passing a magnetic flux generated from the exciting coil 14, in conjunction with the first stator 12a and the first needle 13a. The second yoke 11b constitutes a second magnetic circuit passing the magnetic flux generated from the exciting coil 14, in conjunction with the second stator 12b and the second needle 13b. At least one of a set of the first and second stators 12a, 12b, and a set of the first and second needles 13a, 13b is confined in the exciting coil 14. The first and second yokes 11a, 11b are electrically insulated from each other.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates generally to an electromagnet device and an electromagnetic relay, and more particularly to an electromagnet device and an electromagnetic relay having a magnetic circuit through which magnetic flux of an exciting coil passes.

  Conventionally, there is an electromagnet device that drives a contact device (for example, Patent Document 1). In Patent Document 1, an electromagnet device moves a movable contact to a fixed contact of a fixed terminal included in a contact device by moving a movable contact by electromagnetic force generated by energizing an excitation coil (excitation winding). Touch the contacts.

JP 2014-232668 A

  In the electromagnet device of Patent Document 1, a magnetic circuit is formed between a yoke, a fixed iron core, and a movable iron core by energizing an exciting coil (excitation winding). Move to magnetically couple. As the movable iron core moves, the movable contact moves. That is, in Patent Document 1, one electromagnet device drives one contact device.

  In recent years, it has been desired that one electromagnet device drives a plurality of contact devices.

  This indication is made in view of the above-mentioned subject, and it aims at providing an electromagnet device and an electromagnetic relay which can control a plurality of devices used as a candidate for drive.

  An electromagnet device according to an aspect of the present disclosure includes an exciting coil that generates magnetic flux when energized, a first fixed core and a second fixed core, a first movable core and a second movable core, a first yoke, With two yokes. The first movable core moves so as to reduce the magnetic resistance between the first movable core and the first fixed core in response to energization of the exciting coil. The second movable core moves so as to reduce the magnetic resistance between the second movable core and the second fixed core in response to energization of the excitation coil. The first yoke, together with the first fixed core and the first movable core, constitutes a first magnetic circuit through which the magnetic flux generated by the exciting coil passes. The second yoke, together with the second fixed core and the second movable core, constitutes a second magnetic circuit through which the magnetic flux generated by the exciting coil passes. At least one of the set of the first fixed core and the second fixed core and the set of the first movable core and the second movable core is accommodated inside the exciting coil. The first yoke and the second yoke are electrically insulated from each other.

  An electromagnetic relay according to an aspect of the present disclosure includes the electromagnet device, a first fixed contact, a second fixed contact, a first movable contact, and a second movable contact. The first movable contact moves between a closed position in contact with the first fixed contact and an open position away from the first fixed contact in accordance with the movement of the first movable core. The second movable contact moves between a closed position in contact with the second fixed contact and an open position away from the second fixed contact in accordance with the movement of the second movable core.

  According to the present disclosure, it is possible to control a plurality of devices to be driven.

FIG. 1 is a cross-sectional view of an electromagnetic relay according to one aspect of the present embodiment. FIG. 2A is a perspective view of the electromagnetic relay same as above. FIG. 2B is a left side view of the electromagnetic relay. FIG. 2C is a right side view of the electromagnetic relay. FIG. 3 is another cross-sectional view of the electromagnetic relay. FIG. 4 is a cross-sectional view of the electromagnetic relay according to the first modification. FIG. 5 is a cross-sectional view of another electromagnetic relay according to the first modification. FIG. 6 is a cross-sectional view of an electromagnetic relay according to the second modification. FIG. 7 is a cross-sectional view of another electromagnetic relay according to the second modification. FIG. 8A is a left side view of the electromagnetic relay according to the third modification. FIG. 8B is a right side view of the electromagnetic relay. FIG. 9 is a front view of another electromagnetic relay according to the third modification. FIG. 10 is a cross-sectional view of the electromagnet device in the electromagnetic relay according to the fourth modification. FIG. 11 is a diagram for explaining the concept of a hinge-type electromagnet device according to a modification.

  Embodiments and modifications described below are merely examples of the present disclosure, and the present disclosure is not limited to the embodiments and modifications, and the present disclosure may include other embodiments and modifications. Various modifications can be made according to the design or the like as long as the technical idea does not depart from the scope. Further, in the following embodiments and modifications, each drawing to be described is a schematic diagram, and the ratio of the size and thickness of each component in the drawing necessarily reflects the actual dimensional ratio. Not necessarily.

(Embodiment)
A contact device 1 and an 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 two contact devices 1 and one electromagnet device 10 (see FIG. 2A). In the following description, when the two contact devices 1 are distinguished, they are referred to as contact devices 1a and 1b.

  Each contact device 1 has a pair of fixed terminals 31 and 32 and a movable contact 8 (see FIG. 1). The fixed terminals 31 and 32 hold fixed contacts 311 and 321 (see FIG. 3). The movable contact 8 holds a pair of movable contacts 81 and 82 (see FIG. 3). The fixed contacts 311 and 321 of the contact device 1a correspond to the first movable contact of the present disclosure, and the fixed contacts 311 and 321 of the contact device 1b correspond to the second movable contact of the present disclosure.

  The electromagnet device 10 includes a first mover 13a (first moveable core), a second mover 13b (second moveable core), and an exciting coil 14 (see FIG. 1). The electromagnet device 10 attracts the first movable element 13a and the second movable element 13b by a magnetic field generated in the exciting coil 14 when the exciting coil 14 is energized. With the suction of the first movable element 13a and the second movable element 13b, the movable contact elements 8 of the contact devices 1a and 1b move from the open position to the closed position. The “open position” in the present disclosure is the position of the movable contact 8 when the movable contacts 81 and 82 are separated from the fixed contacts 311 and 321. The “closed position” in the present disclosure is the position of the movable contact 8 when the movable contacts 81 and 82 are in contact with the fixed contacts 311 and 321.

  Moreover, in this embodiment, the 1st needle | mover 13a is arrange | positioned on the straight line L1, and it is comprised so that rectilinear advance reciprocation along the straight line L1. The 2nd needle | mover 13b is arrange | positioned on the straight line L2, and is comprised so that rectilinear advance reciprocating movement along the straight line L2.

  In this embodiment, the case where the two contact devices 1 constitute the electromagnetic relay 100 together with the electromagnet device 10 as shown in FIG. 1 will be described as an example. However, each contact device 1 is not limited to the electromagnetic relay 100, and may be used as, for example, a breaker (breaker) or a switch. In this embodiment, a case where the electromagnetic relay 100 is mounted on an electric vehicle is taken as an example. In this case, the contact device 1 (fixed terminals 31 and 32) is electrically connected on a DC power supply path from a battery for traveling to a load (for example, an inverter).

(1.2) Contact Device Next, the configuration of each contact device 1 will be described. Since the contact device 1a and the contact device 1b have the same configuration, the configuration of the contact device 1a will be described here.

  As shown in FIGS. 1 and 3, the contact device 1 a includes a pair of fixed terminals 31 and 32, a movable contact 8, a housing 4, and a flange 5. The contact device 1 a further includes a first yoke 6, a second yoke 7, and an insulating portion 41. The fixed terminal 31 holds a fixed contact 311, and the fixed terminal 32 holds a 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 arranged to face the pair of fixed contacts 311 and 321.

  In the following, for the sake of explanation, the opposing direction of the fixed contacts 311 and 321 and the movable contacts 81 and 82 is defined as the vertical direction, and the fixed contacts 311 and 321 side is defined as the upper side when viewed from the movable contacts 81 and 82. Furthermore, the direction in which the pair of fixed terminals 31 and 32 (the pair of fixed contacts 311 and 321) are arranged is defined as the front-rear direction, and the fixed terminal 31 side as viewed from the fixed terminal 32 is defined as the front. Moreover, below, the direction orthogonal to both the up-down direction and the front-back direction will be described as the left-right direction. That is, in the following description, the upper, lower, left, and right in FIG. However, these directions are not intended to limit the usage of each contact device 1 and electromagnetic relay 100.

  The fixed contact 311 is held at the lower end (one end) of the fixed terminal 31, and the fixed contact 321 is held at the lower end (one end) of the fixed terminal 32.

  The pair of fixed terminals 31 and 32 are arranged so as to be aligned in the front-rear direction (see FIG. 1). 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 this embodiment, fixed terminals 31 and 32 formed of copper (Cu) are used as an example. However, the fixed terminals 31 and 32 are not intended to be made of copper, and the fixed terminals 31 and 32 are other than 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 orthogonal to the vertical direction. Here, each of the pair of fixed terminals 31 and 32 is configured such that the diameter on the upper end (other end) side is larger than the diameter on the lower end (one end) side, 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 passing through an opening formed in the upper wall of the housing 4.

  The movable contact 8 has a thickness in the vertical direction and is formed in a plate shape longer in the front-rear direction than in the left-right direction. The movable contact 8 is arranged below the pair of fixed terminals 31 and 32 so that both ends in the longitudinal direction (front-rear direction) face the pair of fixed contacts 311 and 321 (see FIG. 3). In the movable contact 8, a pair of movable contacts 81 and 82 are provided at portions facing the pair of fixed contacts 311 and 321 (see FIG. 3).

  The movable contact 8 is accommodated in the housing 4. The movable contact 8 is moved up and down by an electromagnet device 10 disposed below the housing 4. As a result, the movable contact 8 moves between the closed position and the open position. FIG. 1 shows 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 311 and 321, respectively. To touch. On the other hand, when the movable contact 8 is in 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, the pair of fixed terminals 31 and 32 are short-circuited via the movable contact 8. That is, when the movable contact 8 is in the closed position, the movable contacts 81 and 82 are in contact with the fixed contacts 311 and 321, so that the fixed terminal 31 is the fixed contact 311, the movable contact 81, the movable contact 8, and the movable contact 82. In addition, the fixed terminal 32 is electrically connected 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, the contact device 1a is connected to the battery when the movable contact 8 is in the closed position. A supply path for DC power from to the load is formed.

  Here, the movable contacts 81 and 82 may be held by the movable contact 8. Therefore, the movable contacts 81 and 82 may be configured integrally with the movable contact 8 by, for example, driving out a part of the movable contact 8, or may be formed of a separate member from the movable contact 8, for example, welding. For example, the movable contact 8 may be fixed. Similarly, the fixed contacts 311 and 321 may be held by the fixed terminals 31 and 32. For this reason, the fixed contacts 311 and 321 may be formed integrally with the fixed terminals 31 and 32, or are made of a member different from the fixed terminals 31 and 32, and are fixed to the fixed terminals 31 and 32 by welding or the like, for example. It may be.

  The movable contact 8 has a through hole 83 in the central portion. In the present embodiment, the through hole 83 is formed in the middle of the pair of movable contacts 81 and 82 in the movable contact 8. The through hole 83 penetrates the movable contact 8 in the thickness direction (vertical direction). The through hole 83 is a hole through which a first shaft 15a described later is passed. In addition, the through hole 83 of the movable contact 8 of the contact device 1b is a hole through which a second shaft 15b described later is passed.

  The first yoke 6 is a magnetic body, and is formed of a metal material such as iron, for example. The first yoke 6 is fixed to the tip (upper end) of the first shaft 15a. The first shaft 15 a passes through the movable contact 8 through the through hole 83 of the movable contact 8, and the tip (upper end) of the first shaft 15 a protrudes upward from the upper surface of the movable contact 8. Therefore, the first yoke 6 is positioned above the movable contact 8 (see FIGS. 1 and 3).

  The second yoke 7 is a magnetic body, and is formed of a metal material such as iron, for example. The second yoke 7 is fixed to the lower surface of the movable contact 8 (see FIGS. 1 and 3). As a result, the second yoke 7 moves in the vertical direction as the movable contact 8 moves in the vertical direction.

  The second yoke 7 has a through hole 71 at the central portion. 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 passes through the second yoke 7 in the thickness direction (vertical direction). The through hole 71 is a hole through which the first shaft 15a and a first contact pressure spring 17a described later are passed. The through hole 71 of the second yoke 7 of the contact device 1b is a hole through which the second shaft 15b and a second contact pressure spring 17b described later are passed.

  According to such a shape, when a current flows through the movable contact 8, a magnetic flux passing through a magnetic path formed by the first yoke 6 and the second yoke 7 is generated. As a result, a suction force acts between the first yoke 6 and the second yoke 7.

  The housing 4 is made of a ceramic such as aluminum oxide (alumina). The housing | casing 4 is formed in the hollow rectangular parallelepiped shape (refer FIG. 2A) longer in the front-back direction than the left-right direction. The lower surface of the housing 4 is open. The housing 4 accommodates a pair of fixed contacts 311 and 321, a movable contact 8, a first yoke 6, and a second yoke 7. A pair of opening holes for allowing the pair of fixed terminals 31 and 32 to pass through are formed on 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 hole, and the fixed terminal 32 is passed through the other opening hole. The pair of fixed terminals 31 and 32 and the housing 4 are coupled by brazing.

  The housing 4 only needs to 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 the hollow rectangular shape as in the present embodiment, for example, a hollow ellipse. A cylindrical shape, a hollow polygonal column shape, etc. may be sufficient. That is, the box shape here means an overall 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 ceramic, and may be formed of an insulating material such as glass or resin, or may be made of metal. The housing 4 is preferably made of a nonmagnetic material that does not become magnetic due to magnetism.

  The flange 5 is made of a nonmagnetic metal material. The nonmagnetic 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 front-rear direction. The upper surface and the lower surface of the flange 5 are open. The flange 5 is arrange | positioned between the housing | casing 4 and the electromagnet apparatus 10 (refer FIGS. 1-3). The flange 5 is airtightly joined to the housing 4 and a first yoke upper plate 111a of an electromagnet device 10 to be described later. Thereby, the internal space of the contact device 1 surrounded by the housing 4, the flange 5, and the first yoke upper plate 111a 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 part 41 is made of synthetic resin and has electrical insulation. The insulating part 41 is formed in a rectangular plate shape. The insulating part 41 is located below the movable contact 8. The insulating part 41 prevents a short circuit due to an arc generated between the movable contacts 81 and 82 and the fixed contacts 311 and 321. The insulating portion 41 has a through hole 42 at the central portion. 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 portion 41 in the thickness direction (vertical direction). The through hole 42 is a hole for passing the first shaft 15a. Note that the through hole 42 of the insulating portion 41 of the contact device 1b is a hole through which the second shaft 15b passes.

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

  The electromagnet device 10 is disposed below the movable contact 8 included in each of the two contact devices 1. As shown in FIG. 1, the electromagnet device 10 includes a first stator 12a (first fixed core), a second stator 12b (second fixed core), a first mover 13a, and a second mover 13b. And an exciting coil 14.

  The electromagnet device 10 attracts the first movable element 13a to the first stator 12a and the second movable element 13b to the second stator 12b by the magnetic field generated in the exciting coil 14 when the exciting coil 14 is energized, respectively. The mover 13a and the second mover 13b are moved upward.

  Here, the electromagnet device 10 further includes a first yoke 11a, a second yoke 11b, a first shaft 15a, a second shaft 15b, a first contact pressure spring 17a, and a second contact pressure spring 17b. And a first return spring 18a, a second return spring 18b, and a coil bobbin 19. The electromagnet device 10 further includes a first bush 20a, a second bush 20b, a first plunger cap 21a, and a second plunger cap 21b.

  The first yoke 11a has a first yoke upper plate 111a, and the second yoke 11b has a second yoke upper plate 111b.

  The first stator 12a is a fixed iron core formed in a cylindrical shape that protrudes downward from the center of the lower surface of the first yoke upper plate 111a. The upper end portion of the first stator 12a is fixed to the first yoke upper plate 111a.

  The second stator 12b is a fixed iron core formed in a cylindrical shape that protrudes downward from the center of the lower surface of the second yoke upper plate 111b. The upper end portion of the second stator 12b is fixed to the second yoke upper plate 111b.

  The first mover 13a is a movable iron core formed in a columnar shape. The 1st needle | mover 13a is arrange | positioned so that the upper end surface may face the lower end surface of the 1st stator 12a below the 1st stator 12a. The first mover 13a is configured to be movable in the vertical direction. The first armature 13a has an excitation position (see FIGS. 1 and 3) in which the upper end surface thereof is in contact with the lower end surface of the first stator 12a, and a non-existence where the upper end surface is separated from the lower end surface of the first stator 12a. Move between excitation positions. The first mover 13a moves so as to reduce the magnetic resistance between the first mover 13a and the first stator 12a in response to energization of the exciting coil 14. Specifically, the first mover 13a moves upward in response to energization of the exciting coil 14.

  The 2nd needle | mover 13b is the movable iron core formed in the column shape. The 2nd needle | mover 13b is arrange | positioned so that the upper end surface may oppose the lower end surface of the 2nd stator 12b under the 2nd stator 12b. The second movable element 13b is configured to be movable in the vertical direction. The second mover 13b has an excitation position (see FIG. 1) in which the upper end surface is in contact with the lower end surface of the second stator 12b, and a non-excitation position in which the upper end surface is separated from the lower end surface of the second stator 12b. Move between. The second movable element 13b moves so as to reduce the magnetic resistance between the second movable element 13b and the second stator 12b in response to energization of the exciting coil 14. Specifically, the second mover 13b moves upward in response to energization of the exciting coil 14.

  The exciting coil 14 is disposed below the housing 4 in a direction in which the central axis direction coincides with the vertical direction. In this embodiment, the 1st stator 12a, the 1st needle | mover 13a, the 2nd stator 12b, and the 2nd needle | mover 13b are arrange | positioned inside the exciting coil 14 (refer FIG. 1).

  The first yoke 11a is disposed outside the exciting coil 14, and includes a first yoke upper plate 111a and a U-shaped first U-shaped yoke 112a. The first U-shaped yoke 112a includes a bottom yoke 120a, a first side yoke 121a, and a second side yoke 122a arranged in the downward direction of the electromagnet device 10 (see FIG. 2B). The first side yoke 121a is provided so as to extend upward from the front end of the bottom yoke 120a. A second side yoke 122a is provided so as to extend upward from the rear end of the bottom yoke 120a. The first U-shaped yoke 112a is caulked and joined to the first yoke upper plate 111a at the upper ends of the first side yoke 121a and the second side yoke 122a. Thereby, since the both ends of the front-back direction of the 1st yoke upper board 111a are fixedly supported, possibility that the 1st yoke upper board 111a will deform | transform downward can be made low.

  The first yoke 11a, together with the first stator 12a and the first mover 13a, forms a first magnetic circuit 50 through which a magnetic flux generated when the exciting coil 14 is energized passes (see FIG. 2B). Therefore, the first yoke 11a, the first stator 12a, and the first movable element 13a are all made of a magnetic material. The first yoke upper plate 111a constitutes a part of the first yoke 11a. In other words, at least a part of the first yoke 11a (the first yoke upper plate 111a) is located between the exciting coil 14 and the movable contact 8 of the contact device 1a. The first yoke upper plate 111a is formed of a stainless steel material (SUS430) and is coupled to the flange 5 of the contact device 1a by welding. The first U-shaped yoke 112a is formed of a steel plate (SPCC).

  The second yoke 11b is disposed outside the exciting coil 14, and has a second yoke upper plate 111b and a U-shaped second U-shaped yoke 112b. The second U-shaped yoke 112b has a bottom yoke 120b, a first side yoke 121b, and a second side yoke 122b arranged in the downward direction of the electromagnet device 10 (see FIG. 2C). The first side yoke 121b is provided so as to extend upward from the front end of the bottom yoke 120b. A second side yoke 122b is provided so as to extend upward from the rear end of the bottom yoke 120b. The first U-shaped yoke 112b is caulked and joined to the second yoke upper plate 111b at the upper ends of the first side yoke 121b and the second side yoke 122b. Thereby, since the both ends of the front-back direction of the 2nd yoke upper board 111b are fixedly supported, possibility that the 2nd yoke upper board 111b will deform | transform downward can be made low.

  The second yoke 11b, together with the second stator 12b and the second mover 13b, forms a second magnetic circuit 51 through which the magnetic flux generated when the exciting coil 14 is energized passes (see FIG. 2C). Therefore, the second yoke 11b, the second stator 12b, and the second mover 13b are all made of a magnetic material. The second yoke upper plate 111b constitutes a part of the second yoke 11b. In other words, at least a part of the second yoke 11b (second yoke upper plate 111b) is located between the exciting coil 14 and the movable contact 8 of the contact device 1b. The first yoke upper plate 111a is formed of a stainless steel material (SUS430) and is coupled to the flange 5 of the contact device 1b by welding. The second U-shaped yoke 112b is formed of a steel plate (SPCC).

  In the present embodiment, the magnetic flux passing through the first yoke 11a out of the magnetic flux generated by the exciting coil 14 substantially passes between the first stator 12a and the first movable element 13a, and the exciting coil 14 is generated. The first magnetic circuit 50 and the second magnetic circuit 51 are configured so that the magnetic flux passing through the second yoke 11b substantially passes between the second stator 12b and the second mover 13b. Yes. For example, 90% or more, preferably 95% or more of the magnetic flux passing through the first yoke 11a out of the magnetic flux generated by the exciting coil 14 passes between the first stator 12a and the first movable element 13a, and the exciting coil 14 Of the generated magnetic flux, 90% or more, preferably 95% or more of the magnetic flux passing through the second yoke 11b passes between the second stator 12b and the second mover 13b, so that the first yoke 11a and the second yoke 11b. A yoke 11b is provided. In addition, these numerical values are examples and are not intended to be limited to these numerical values.

  The first contact pressure spring 17a is disposed between the lower surface of the movable contact 8 of the contact device 1a and the upper surface of the insulating portion 41 of the contact device 1a. The first contact pressure spring 17a is a coil spring that biases the movable contact 8 of the contact device 1a upward (see FIG. 1).

  The second contact pressure spring 17b is disposed between the lower surface of the movable contact 8 of the contact device 1b and the upper surface of the insulating portion 41 of the contact device 1b. The second contact pressure spring 17b is a coil spring that biases the movable contact 8 of the contact device 1b upward (see FIG. 1).

  At least a part of the first return spring 18a is disposed inside the first stator 12a. The first return spring 18a is a coil spring that biases the first movable element 13a downward (non-excitation position). One end of the first return spring 18a is connected to the upper end surface of the first mover 13a, and the other end of the first return spring 18a passes through the first yoke upper plate 111a (see FIG. 1).

  At least a part of the second return spring 18b is arranged inside the second stator 12b. The second return spring 18b is a coil spring that biases the second movable element 13b downward (non-excited position). One end of the second return spring 18b is connected to the upper end surface of the second movable element 13b, and the other end of the second return spring 18b passes through the second yoke upper plate 111b (see FIG. 1).

  The first shaft 15a is made of a nonmagnetic material. The first shaft 15a is formed in a round bar shape extending in the vertical direction. The first shaft 15 a transmits the driving force generated in the electromagnet device 10 to the contact device 1 a provided above the electromagnet device 10. The first shaft 15a passes through the inside of the first contact pressure spring 17a, the through hole formed in the central portion of the first yoke upper plate 111a, the inside of the first stator 12a, and the inside of the first return spring 18a. And the lower end part is being fixed to the 1st needle | mover 13a. The first yoke 6 of the contact device 1a is fixed to the upper end portion of the first shaft 15a.

  The second shaft 15b is made of a nonmagnetic material. The second shaft 15b is formed in a round bar shape extending in the vertical direction. The second shaft 15 b transmits the driving force generated by the electromagnet device 10 to the contact device 1 b provided above the electromagnet device 10. The second shaft 15b passes through the inside of the second contact pressure spring 17b, the through hole formed in the center portion of the second yoke upper plate 111b, the inside of the second stator 12b, and the inside of the second return spring 18b. And the lower end part is being fixed to the 2nd needle | mover 13b. The first yoke 6 of the contact device 1b is fixed to the upper end portion of the second shaft 15b.

  The coil bobbin 19 is made of synthetic resin, and the exciting coil 14 is wound around it. The coil bobbin 19 has a shaft portion 19 a that is a portion that becomes a winding shaft of the exciting coil 14. Concave and convex portions 190 and 195 are provided at both ends in the vertical direction of the shaft portion 19a. Specifically, a plurality of convex portions 191 protruding in the left-right direction and a plurality of concave portions 192 recessed in the left-right direction are provided at the upper end of the shaft portion 19a, and the first yoke upper plate 111a and the second It is provided in the direction in which the yoke upper plate 111b is arranged. Thereby, the uneven | corrugated | grooved part 190 uneven | corrugated in the left-right direction is formed in the arrangement direction of the 1st yoke upper board 111a and the 2nd yoke upper board 111b.

  A plurality of insulating plates projecting in the left-right direction and the lower direction at the lower end of the shaft portion 19a and arranged at predetermined intervals in the direction in which the first yoke upper plate 111a and the second yoke upper plate 111b are arranged. 196 (here, two insulating plates 196) is provided. Thereby, the uneven | corrugated | grooved part 190 uneven | corrugated in the left-right direction and the up-down direction in the arrangement direction of the 1st yoke upper board 111a and the 2nd yoke upper board 111b is formed.

  Further, an insulating plate 193 protruding upward is provided at the upper end of the shaft portion 19a. Here, one insulating plate 193 is provided, but a plurality of insulating plates 193 may be arranged at a predetermined interval in the arrangement direction of the first yoke upper plate 111a and the second yoke upper plate 111b. Good. The plurality of insulating plates 193 are arranged at a predetermined interval in the direction in which the first yoke upper plate 111a and the second yoke upper plate 111b are arranged, so that the first joint also at the upper end of the shaft portion 19a. In the arrangement direction of the iron upper plate 111a and the second yoke upper plate 111b, a concavo-convex portion that is uneven in the vertical direction is formed.

  That is, the uneven portions 190 and 195 and the insulating plate 193 are provided between the first U-shaped yoke 112a and the second U-shaped yoke 112b. The uneven portions 190 and 195 and the insulating plates 193 and 196 correspond to the insulating member of the present disclosure.

  Thus, the first yoke 11a and the second yoke 11b are separated by the synthetic resin coil bobbin 19, that is, the insulating coil bobbin 19, so the first yoke 11a and the second yoke 11b. The electrical insulation between the two can be maintained. Moreover, since the creeping distance is increased by providing the uneven portions 190 and 195 between the first yoke 11a and the second yoke 11b, the gap between the first yoke 11a and the second yoke 11b is increased. The electrical insulation can be increased.

  The first plunger cap 21a is formed in a cylindrical shape. The 1st plunger cap 21a accommodates the 1st stator 12a and the 1st needle | mover 13a, and regulates the moving direction of the 1st needle | mover 13a up and down.

  The second plunger cap 21b is formed in a cylindrical shape. The 2nd plunger cap 21b accommodates the 2nd stator 12b and the 2nd needle | mover 13b, and regulates the moving direction of the 2nd needle | mover 13b up and down.

  The first bush 20a is formed in a cylindrical shape. The first bush 20 a is disposed inside the coil bobbin 19 so that the cylindrical axis of the first bush 20 a is along the axis of the exciting coil 14. The first bush 20a houses a portion below the first plunger cap 21a.

  The second bush 20b is formed in a cylindrical shape. The second bush 20b is disposed inside the coil bobbin 19 so that the cylindrical axis of the second bush 20b is along the axis of the exciting coil 14. The second bush 20b houses a portion below the second plunger cap 21b.

  With this configuration, as the first movable element 13a and the second movable element 13b move in the vertical direction by the driving force generated by the electromagnet device 10, the movable contact 8 of the contact device 1a and the movable contact of the contact device 1b. 8 moves up and down.

(2) Operation Next, the operation of the electromagnetic relay 100 including the contact devices 1a and 1b and the electromagnet device 10 configured as described above will be briefly described.

  When the exciting coil 14 is not energized (when it is not energized), no magnetic attractive force is generated between the first mover 13a and the first stator 12a, so the first mover 13a is in the first return state. It is located at the non-excitation position by the spring force of the spring 18a. At this time, the first shaft 15a is pulled downward against the spring force of the contact pressure spring 17a. The movable contact 8 of the contact device 1a is restricted from moving upward by the first shaft 15a. Thereby, the movable contact 8 of the contact device 1a is located in the open position which is the lower end position in the movable range. Therefore, the movable contacts 81 and 82 of the contact device 1a are separated from the fixed contacts 311 and 321 of the contact device 1a, and the contact device 1a is opened. In this state, the fixed terminals 31 and 32 of the contact device 1a are not conductive.

  When the exciting coil 14 is not energized (when it is not energized), no magnetic attraction force is generated between the second mover 13b and the second stator 12b. It is located at the non-excitation position by the spring force of the spring 18b. At this time, the second shaft 15b is pulled downward against the spring force of the contact pressure spring 17b. The movable contact 8 of the contact device 1b is restricted from moving upward by the second shaft 15b. Thereby, the movable contact 8 of the contact device 1b is located in the open position which is a lower end position in the movable range. Therefore, the movable contacts 81 and 82 of the contact device 1b are separated from the fixed contacts 311 and 321 of the contact device 1b, and the contact device 1b is opened. In this state, the fixed terminals 31 and 32 of the contact device 1b are not conductive.

  On the other hand, when the exciting coil 14 is energized, a magnetic attractive force is generated between the first mover 13a and the first stator 12a and between the second mover 13b and the second stator 12b. The magnetic attractive force acts so that the gap between the first mover 13a and the first stator 12a and the gap between the second mover 13b and the second stator 12b are reduced. Therefore, the first movable element 13a is attracted upward against the spring force of the first return spring 18a, and the second movable element 13b is attracted upward against the spring force of the second return spring 18b. Move to position. At this time, since the first shaft 15a is pushed upward, the upward movement restriction of the movable contact 8 of the contact device 1a by the first shaft 15a is released. Similarly, since the second shaft 15b is pushed upward, the upward movement restriction of the movable contact 8 of the contact device 1b by the second shaft 15b is released.

  Then, the first contact pressure spring 17a biases the movable contact 8 of the contact device 1a upward, so that the movable contact 8 of the contact device 1a moves to the closed position that is the upper end position in the movable range. Therefore, the movable contacts 81 and 82 of the contact device 1a come into contact with the fixed contacts 311 and 321 and the contact device 1a is closed. In this state, since the contact device 1a is in a closed state, the fixed terminals 31 and 32 are electrically connected. Similarly, the second contact pressure spring 17b biases the movable contact 8 of the contact device 1b upward, so that the movable contact 8 of the contact device 1b moves to a closed position that is the upper end position in the movable range. . Therefore, the movable contacts 81 and 82 of the contact device 1b come into contact with the fixed contacts 311 and 321, and the contact device 1b is closed. In this state, since the contact device 1b is in a closed state, the fixed terminals 31 and 32 are electrically connected.

  As described above, the electromagnet device 10 controls the attractive force acting on the first movable element 13a and the second movable element 13b by switching the energized state of the exciting coil 14, and controls the first movable element 13a and the second movable element 13b. By moving in the vertical direction, a driving force for switching between the open state and the closed state of the contact devices 1a and 1b is generated.

(3) Advantages In the electromagnet device 10, the first stator 12 a, the second stator 12 b, the first mover 13 a, and the second mover 13 b are provided inside the excitation coil 14, and the first joint is placed outside the excitation coil 14. An iron 11a and a second yoke 11b are provided. Thereby, in one electromagnet device 10, two movers (the 1st mover 13a and the 2nd mover 13b) can be moved. That is, one electromagnet device 10 can drive two contact devices 1.

  Since the insulating members (uneven portions 190, 195, insulating plate 193) are provided between the first yoke 11a and the second yoke 11b, the first mover 13a and the second mover 13b are moved. Even if it exists, insulation can be maintained.

  In the present embodiment, the first stator 12a, the first mover 13a, the second stator 12b, and the second mover 13b are arranged inside the excitation coil 14, but this configuration is used. It is not limited. The first stator 12a and the second stator 12b may be arranged inside the exciting coil 14, or the first movable element 13a and the second movable element 13b may be arranged. Also good. That is, a configuration in which at least one of the set of the first stator 12a and the second stator 12b and the set of the first mover 13a and the second mover 13b is arranged inside the excitation coil 14. If it is.

(4) Modified Examples Hereinafter, modified examples of the embodiment will be described. Hereinafter, the same components as those in the embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The modifications described below can be applied in combination with the above embodiment as appropriate.

(4.1) Modification 1
In the embodiment, the exciting coil 14 may include a first coil 141 and a second coil 142. In the present modification, the first coil 141 is disposed inside the second coil 142 (see FIG. 4).

  The first mover 13a and the second mover 13b move from the non-excitation position to the excitation position, that is, both the movable contact 8 of the contact device 1a and the movable contact 8 of the contact device 1b move from the open position to the closed position. When moving, the first coil 141 and the second coil 142 are energized. Further, the first movable element 13a and the second movable element 13b hold the state at the excitation position. When both the movable contact 8 of the contact device 1a and the movable contact 8 of the contact device 1b hold the closed position, current is supplied to at least one of the first coil 141 and the second coil 142. For example, the first coil 141 can be energized and the second coil 142 can be de-energized. In this modification, the axes of the first coil 141 and the second coil 142 are the same.

  In this case, for example, when the first movable element 13a and the second movable element 13b are moved from the non-excitation position to the excitation position, the first coil 141 and the second coil 142 are energized. Thereby, a magnetic attraction force is generated between the first mover 13a and the first stator 12a and between the second mover 13b and the second stator 12b. Therefore, the first movable element 13a is attracted upward against the spring force of the first return spring 18a, and the second movable element 13b is attracted upward against the spring force of the second return spring 18b. Move to position. As a result, since the first shaft 15a is pushed upward, the upward movement restriction of the movable contact 8 of the contact device 1a by the first shaft 15a is released. Similarly, since the second shaft 15b is pushed upward, the upward movement restriction of the movable contact 8 of the contact device 1b by the second shaft 15b is released.

  Then, the first contact pressure spring 17a biases the movable contact 8 of the contact device 1a upward, so that the movable contact 8 of the contact device 1a moves to the closed position that is the upper end position in the movable range. Therefore, the movable contacts 81 and 82 of the contact device 1a come into contact with the fixed contacts 311 and 321 and the contact device 1a is closed. In this state, since the contact device 1a is in a closed state, the fixed terminals 31 and 32 are electrically connected. Similarly, the second contact pressure spring 17b biases the movable contact 8 of the contact device 1b upward, so that the movable contact 8 of the contact device 1b moves to a closed position that is the upper end position in the movable range. . Therefore, the movable contacts 81 and 82 of the contact device 1b come into contact with the fixed contacts 311 and 321, and the contact device 1b is closed. In this state, since the contact device 1b is in a closed state, the fixed terminals 31 and 32 are electrically connected.

  Then, the contact device is switched by externally controlling the energization from the first coil 141 and the second coil 142 to at least one of the first coil 141 and the second coil 142 (for example, the first coil 141). The closed state of 1a and 1b is maintained.

  Note that the second coil 142 may be disposed inside the first coil 141.

  Further, the first coil 141 and the second coil 142 may be arranged so as to be aligned in the vertical direction. For example, the second coil 142 may be disposed above the first coil 141 (see FIG. 5). Even in this case, the axes of the first coil 141 and the second coil 142 are the same. Further, the first coil 141 may be disposed above the second coil 142.

  In order for both the movable contact 8 of the contact device 1a and the movable contact 8 of the contact device 1b to move from the open position to the closed position, a force for pushing up the first return spring 18a and the second return spring 18b is required. . Therefore, it is necessary to supply a large current to the coil. On the other hand, the movable contact 8 is closed at a current smaller than the current required to move both the movable contact 8 of the contact device 1a and the movable contact 8 of the contact device 1b from the open position to the closed position. It can be held in the state. In this modification, the exciting coil 14 includes a first coil 141 and a second coil 142. In order to move both the movable contact 8 of the contact device 1a and the movable contact 8 of the contact device 1b from the open position to the closed position, current is supplied to the first coil 141 and the second coil 142, In order to hold the movable contact 8 in the closed position, for example, only the first coil 141 is supplied with current. The amount of current flowing only through the first coil 141 is less than the amount of current flowing through the first coil 141 and the second coil 142. That is, the current consumption can be reduced by switching the input current from both the first coil 141 and the second coil 142 to the first coil 141.

  In this modification, the first mover 13a and the second mover 13b move from the non-excitation position to the excitation position, that is, both the movable contact 8 of the contact device 1a and the movable contact 8 of the contact device 1b. When moving from the open position to the closed position, the first coil 141 and the second coil 142 are both energized. However, the present invention is not limited to this structure. When both the movable contact 8 of the contact device 1a and the movable contact 8 of the contact device 1b move from the open position to the closed position, only one of the first coil 141 and the second coil 142 is energized. Also good.

(4.2) Modification 2
In the embodiment, the electromagnet device 10 may include excitation coils 145 and 146 in addition to the excitation coil 14.

  In this modification, the excitation coil 14 can be used as a coil for maintaining the closed state of the contact devices 1a and 1b. The exciting coil 145 serves as a coil for moving the movable contact 8 of the contact device 1a from the open position to the closed position, and the exciting coil 146 moves the movable contact 8 of the contact device 1b from the open position to the closed position. Each of the coils can be used as a coil.

  An excitation coil 145 and an excitation coil 146 are disposed inside the excitation coil 14 (see FIG. 6).

  The exciting coil 145 is disposed below the contact device 1a in such a direction that the central axis direction coincides with the vertical direction. The first stator 12a and the first movable element 13a are disposed inside the exciting coil 145. When conducting to the exciting coil 145, the magnetic flux generated by the exciting coil 145 passes through the first yoke 11a, the first stator 12a, and the first movable element 13a. The magnetic flux generated when the exciting coil 145 is energized is in the same direction as the direction of the magnetic flux generated when the exciting coil 14 is energized in the first magnetic circuit 50. That is, at least one of the magnetic flux generated when the exciting coil 14 is energized and the magnetic flux generated when the exciting coil 145 is energized pass through the first magnetic circuit 50.

  The exciting coil 146 is disposed below the contact device 1b in such a direction that the central axis direction coincides with the vertical direction. Inside the exciting coil 146, the second stator 12b and the second movable element 13b are arranged. When conducting to the exciting coil 146, the magnetic flux generated by the exciting coil 146 passes through the second yoke 11b, the second stator 12b, and the second movable element 13b. The magnetic flux generated when the exciting coil 146 is energized is in the same direction as the direction of the magnetic flux generated when the exciting coil 14 is energized in the first magnetic circuit 50. That is, at least one of the magnetic flux generated when the exciting coil 14 a is energized and the magnetic flux generated when the exciting coil 145 is energized pass through the second magnetic circuit 51.

  For example, when the excitation coil 145 is energized and the excitation coil 146 is not energized, the magnetic flux generated by the excitation coil 145 passes through the first stator 12a and the first movable element 13a. On the other hand, the magnetic flux generated by the exciting coil 145 does not substantially pass through the second stator 12b and the second movable element 13b. Therefore, the magnetic flux density in the gap between the first stator 12a and the first movable element 13a of the first magnetic circuit 50, and the magnetic flux density in the gap between the second stator 12b and the second movable element 13b of the second magnetic circuit 51. An imbalance in the magnetic flux density.

  Next, operation | movement of the electromagnetic relay 100 of this modification is demonstrated easily.

  When the exciting coil 14, the exciting coil 145, and the exciting coil 146 are not energized (when not energized), no magnetic attractive force is generated between the first movable element 13a and the first stator 12a. The mover 13a is located at the non-excitation position by the spring force of the first return spring 18a. Thereby, the contact apparatus 1a will be in an open state.

  When the exciting coil 14, the exciting coil 145, and the exciting coil 146 are not energized (when not energized), no magnetic attractive force is generated between the second movable element 13b and the second stator 12b. The mover 13b is located at the non-excitation position by the spring force of the second return spring 18b. Thereby, the contact apparatus 1b will be in an open state.

  On the other hand, when the exciting coil 14 and the exciting coil 145 are energized, a magnetic attractive force is generated between the first movable element 13a and the first stator 12a. Therefore, the first movable element 13a is attracted upward and moves to the excitation position. At this time, since the first shaft 15a is pushed upward, the contact device 1a is closed.

  After energization of the excitation coil 14 and the excitation coil 145, by switching the energization to one of the excitation coil 145 or the excitation coil 14, at least the contact device 1a of the contact device 1a and the contact device 1b is kept closed. Can do.

  When the excitation coil 14 and the excitation coil 146 are energized, a magnetic attractive force is generated between the second mover 13b and the second stator 12b. Therefore, the second mover 13b is attracted upward and moves to the excitation position. At this time, since the second shaft 15b is pushed upward, the contact device 1b is closed.

  After energization of the excitation coil 14 and the excitation coil 146, by switching the energization to one of the excitation coil 146 or the excitation coil 14, at least the contact device 1b of the contact device 1a and the contact device 1b is kept closed. Can do.

  In this modification, the exciting coil 14 has a function as a first functional coil used for maintaining the closed state of the contact devices 1a and 1b, and the exciting coils 145 and 146 open the contact devices 1a and 1b from the closed state. It has a function as a second functional coil used for displacement to a state. As a specific example, by energizing the exciting coils 14a, 145, and 146, the contact devices 1a and 1b are closed. Thereafter, the energization is switched from the excitation coils 14a, 145 and 146 to only the excitation coil 14a. Thereby, the contact device 1a and the contact device 1b can be kept in the closed state, and the current consumption can be reduced.

  In this modification, the exciting coil 14 may have a function as a second functional coil, and the exciting coils 145 and 146 may have a function as a first functional coil. As a specific example, by energizing the exciting coils 14a, 145, and 146, the contact devices 1a and 1b are closed. Thereafter, the energization is switched from the excitation coils 14a, 145, and 146 to the energization of the excitation coils 145 and 146 by de-energizing the excitation coil 14a. Thereby, the contact device 1a and the contact device 1b can be kept in the closed state, and the current consumption can be reduced.

It is also possible to control so that only one of the contact devices 1a and 1b is opened.
As a specific example, a case where only the contact device 1b is opened when both the contact devices 1a and 1b are closed will be described. The excitation coil 14 and the excitation coils 145 and 146 are energized to close both the contact devices 1a and 1b. Next, while the exciting coils 145 and 146 are energized, the exciting coil 14 is deenergized. Thereafter, the energization is switched to at least one of the exciting coils 145 and 146. For example, the excitation coil 146 is deenergized. At this time, the exciting coil 145 is energized. Accordingly, the contact device 1b can be opened while the contact device 1a is kept closed. That is, the electromagnet device 10 can individually control the open / close state with respect to the contact devices 1a and 1b.

  In addition, the exciting coil 14, the exciting coil 145, and the exciting coil 146 may be arrange | positioned so that it may rank with an up-down direction. For example, the excitation coil 145 and the excitation coil 146 may be disposed above the excitation coil 14 (see FIG. 7). Further, the excitation coil 14 may be disposed above the excitation coil 145 and the excitation coil 146. Further, the exciting coil 145 may be disposed above the exciting coil 14 and the exciting coil 146 may be disposed below the exciting coil 14. Alternatively, the exciting coil 146 may be disposed above the exciting coil 14 and the exciting coil 145 may be disposed below the exciting coil 14.

  In this modification, the electromagnet device 10 has the two excitation coils 145 and 146 in addition to the excitation coil 14, but is not limited to this configuration. The electromagnet device 10 may have one excitation coil of the two excitation coils 145 and 146.

  In the present modification, the excitation coil 14 may include the first coil 141 and the second coil 142 described in Modification 1. At this time, the electromagnet device 10 may include only one or both of the exciting coils 145 and 146. In this case, the excitation coils 145 and 146 can assist when the first movable element 13a and the second movable element 13b move from the non-excitation position to the excitation position, respectively.

  In this modification, the exciting coils 145 and 146 may generate magnetic flux in a direction opposite to the direction of magnetic flux generated by the exciting coil 14. In this case, when both the contact devices 1a and 1b are in the closed state, for example, when the exciting coil 145 is energized, at least a part of the magnetic flux generated by the exciting coil 14 is canceled by the magnetic flux generated by the exciting coil 145. . For this reason, the magnetic coupling between the first stator 12a and the first movable element 13a is weakened, and as a result, the contact device 1a is opened. Thereby, the open / close state can be individually controlled for the contact devices 1a and 1b.

(4.3) Modification 3
In the embodiment, the first yoke 11a includes a first yoke upper plate 111a and a U-shaped first U-shaped yoke 112a, and the second yoke 11b includes the second yoke upper plate 111b and the U-shaped first plate. It was set as the structure which has the 2nd U-shaped yoke 112b of character shape. However, it is not limited to this configuration.

  The first yoke 11a has a first yoke upper plate 111a and an L-shaped first L-shaped yoke 125a, and the second yoke 11b has an L-shaped first plate with the second yoke upper plate 111b. The structure which has 2 L-shaped yoke 125b may be sufficient.

  The first L-shaped yoke 125a has a bottom yoke 126a and a side yoke 127a arranged in the downward direction of the electromagnet device 10 (see FIG. 8A). A side yoke 127a is provided so as to extend upward from one end of both ends in the front-rear direction of the bottom yoke 126a. In this modification, the side yoke 127a of the first yoke 11a is provided so as to extend upward from the front end of the bottom yoke 126a. The first L-shaped yoke 125a is caulked and joined to the first yoke upper plate 111a at the upper end of the side yoke 127a. Thereby, one end (here, the end in the front direction) of both ends in the front-rear direction of the first yoke upper plate 111a is fixedly supported.

  The second L-shaped yoke 125b has a bottom yoke 126b and a side yoke 127b arranged in the downward direction of the electromagnet device 10 (see FIG. 8B). A side yoke 127b is provided so as to extend upward from one end of both ends of the bottom yoke 126b in the front-rear direction. In the present modification, the side yoke 127b of the second yoke 11b is provided so as to extend upward from the rear end of the bottom yoke 126b. The second L-shaped yoke 125b is caulked and joined to the second yoke upper plate 111b at the upper end of the side yoke 127b. Thereby, one end (here, the end in the rear direction) of both ends in the front-rear direction of the second yoke upper plate 111b is fixedly supported.

  Even in this case, since the first magnetic circuit 50 and the second magnetic circuit 51 (see FIGS. 8A and 8B) described in the embodiment are formed, the electromagnet device 10 of the present modification includes the contact devices 1a and 1b. Opening and closing can be controlled.

  In this modification, the side yoke 127a of the first yoke 11a is arranged on the front side and the side yoke 127b of the second yoke 11b is arranged on the rear side with respect to the exciting coil 14. The configuration is not limited to this.

  The structure which arrange | positions the side yoke 127a of the 1st yoke 11a to the back side, and the side yoke 127b of the 2nd yoke 11b with respect to the exciting coil 14 may be sufficient.

  Alternatively, the side yoke 127a of the first yoke 11a and the side yoke 127b of the second yoke 11b may be arranged so as to be arranged along the arrangement direction (left-right direction) of the contact devices 1a, 1b. (See FIG. 9).

  Alternatively, the side yoke 127a of the first yoke 11a and the side yoke 127b of the second yoke 11b may be arranged on the same side with respect to the exciting coil 14.

  From the viewpoint of electrical insulation between the first yoke 11a and the second yoke 11b, the side yoke 127a of the first yoke 11a and the side yoke 127b of the second yoke 11b are: It is preferable to dispose at a more distant position.

  In the present modification, the first yoke upper plate 111a is caulked and coupled to the side yoke 127a, but is not limited to this configuration. The first yoke upper plate 111a may be coupled to the side yoke 127a by press-fitting. Alternatively, the first yoke upper plate 111a and the first L-shaped yoke 125a may be integrally formed.

  Similarly, the second yoke upper plate 111b may be coupled to the side yoke 127b by press fitting. Alternatively, the second yoke upper plate 111b and the first L-shaped yoke 125a may be integrally formed.

  In the present embodiment, the first yoke 11a is configured such that the bottom yoke 126a is disposed below the first yoke upper plate 111a, but is not limited to this configuration. The first yoke 11a may be formed such that the bottom yoke 126a is disposed above the first yoke upper plate 111a. Similarly, the second yoke 11b may be formed such that the bottom yoke 126b is disposed above the second yoke upper plate 111b.

(4.4) Modification 4
In the embodiment and the first to third modifications, both the contact devices 1a and 1b are configured to be disposed above the exciting coil 14, but the present invention is not limited to this configuration.

  One of the contact devices 1 a and 1 b may be disposed above the exciting coil 14, and the other contact device may be disposed below the exciting coil 14.

  For example, the contact device 1a may be disposed above the excitation coil 14, and the contact device 1b may be disposed below the excitation coil 14 (see FIG. 10).

  In the present modification, as in Modification 3, the first yoke 11a includes a first yoke upper plate 111a and a first L-shaped yoke 125a, and the second yoke 11b is formed on the second yoke. It has the board 111b and the 2nd L-shaped yoke 125b.

  The first yoke upper plate 111 a and the bottom yoke 126 b of the second L-shaped yoke 125 b are disposed above the exciting coil 14. At this time, the first yoke upper plate 111a and the bottom yoke 126b of the second L-shaped yoke 125b may be arranged on the same plane perpendicular to the vertical direction, or perpendicular to the vertical direction and on different planes. May be arranged. In this modification, the first yoke upper plate 111a and the bottom yoke 126b of the second L-shaped yoke 125b are arranged on different planes orthogonal to the vertical direction (see FIG. 10). The distance between the first yoke upper plate 111a and the bottom yoke 126b of the second L-shaped yoke 125b is a distance d1.

  The second yoke upper plate 111 b and the bottom yoke 126 a of the first L-shaped yoke 125 a are disposed below the exciting coil 14. At this time, the second yoke upper plate 111b and the bottom yoke 126a of the first L-shaped yoke 125a may be arranged on the same plane perpendicular to the vertical direction, or perpendicular to the vertical direction and on different planes. May be arranged. In the present modification, the second yoke upper plate 111b and the bottom yoke 126a of the first L-shaped yoke 125a are arranged on different planes orthogonal to the vertical direction (see FIG. 10). The distance between the second yoke upper plate 111b and the bottom yoke 126a of the first L-shaped yoke 125a is also the distance d1.

  The first yoke upper plate 111a and the bottom yoke 126b of the second L-shaped yoke 125b are separated in the vertical direction, and the second yoke upper plate 111b and the bottom yoke 126a of the first L-shaped yoke 125a are moved in the vertical direction. By separating the distance, the insulating structure can be provided in the vertical direction.

  In this modification, the contact device 1 a is disposed above the excitation coil 14, and the contact device 1 b is disposed below the excitation coil 14. Accordingly, the length from the end portion 128b of the bottom yoke 126b of the second yoke 11b to the side yoke 127a of the first yoke 11a is set from the tip 118a of the first yoke upper plate 111a to the first yoke. The length of the iron 11a can be shorter than the length of the side yoke 127a (see FIG. 10). Similarly, the length from the end portion 128a of the bottom yoke 126a of the first yoke 11a to the side yoke 127b of the second yoke 11b is set from the tip 118b of the second yoke upper plate 111b to the second yoke. It can be made shorter than the length of the iron 11b up to the side yoke 127b. As a result, the length in the left-right direction of the electromagnetic relay 100 of this modification can be shortened.

(4.5) Modification 5
In the embodiment, the fixed terminals 31 and 32 of the contact device 1a and the fixed terminals 31 and 32 of the contact device 1b are arranged to be arranged in the front-rear direction, but the present invention is not limited to this configuration.

  The fixed terminals 31 and 32 of the contact device 1a and the fixed terminals 31 and 32 of the contact device 1b may be arranged in the left-right direction. Thereby, the length of the front-back direction can be shortened. For example, when the electromagnetic relay 100 is attached to a plane including the vertical direction and the horizontal direction, a reduction in height can be realized.

  This modification can be applied to other modifications.

(4.6) Modification 6
The exciting coil 14 described in the embodiment is an elliptical winding as viewed from the top and bottom directions. Further, the exciting coil 14 may be an 8-shaped winding as viewed from the up-down direction. In this case, two openings are formed in the 8-shaped exciting coil 14. The first stator 12a and the first movable element 13a are inserted into one of the two openings (first opening). The second stator 12b and the second movable element 13b are inserted into the other opening (second opening).

  For example, if the current flows clockwise at the site where the first opening is formed in the exciting coil 14, the current flows counterclockwise at the site where the second opening is formed. Therefore, an upward magnetic flux is generated in the first opening, and a downward magnetic flux is generated in the second opening. In this case, the contact device 1a is closed by the magnetic flux generated upward, and the contact device 1b is closed by the magnetic flux generated downward. Assuming that the current flows clockwise at the site where the second opening is formed in the exciting coil 14, the current flows counterclockwise at the site where the first opening is formed. Therefore, an upward magnetic flux is generated in the second opening, and a downward magnetic flux is generated in the first opening. In this case, the contact device 1a is closed by the magnetic flux generated downward, and the contact device 1b is closed by the magnetic flux generated upward.

  Further, another exciting coil may be provided outside the 8-shaped exciting coil 14. In this case, for example, the first movable element 13a and the second movable element 13b move from the non-excitation position to the excitation position, that is, both the movable contact 8 of the contact device 1a and the movable contact 8 of the contact device 1b are opened. When moving from the position to the closed position, the exciting coil 14 is energized. As a result, first, both the contact device 1a and the contact device 1b are closed. Thereafter, when another excitation coil is energized, the direction of the magnetic flux generated in the other excitation coil is such that the direction of the magnetic flux generated at the site where the first opening is formed in the excitation coil 14 and the second opening in the excitation coil 14. This coincides with one of the directions of magnetic flux generated at the site to be formed. For example, when the direction of the magnetic flux generated by another exciting coil coincides with the direction of the magnetic flux generated at the site where the first opening is formed in the exciting coil 14, the contact device 1a maintains the closed state. 1b is in an open state. That is, by switching the direction of the current flowing through another exciting coil, one of the contact device 1a and the contact device 1b can be kept closed. Thereby, the open / close state can be individually controlled for the contact devices 1a and 1b.

  The same operation as described above is performed even if the current is supplied to another excitation coil first and then the excitation coil 14 is supplied with current.

(Other variations)
Below, other modifications are listed. The modifications described below can be applied in appropriate combination with the above-described embodiments (including modifications of the embodiments).

  In the said embodiment, although it was set as the structure which uses an insulating member in order to mutually insulate the 1st yoke 11a and the 2nd yoke 11b, it is not limited to this structure. The first yoke 11a and the second yoke 11b may be insulated from each other by setting the distance between the first yoke 11a and the second yoke 11b to a certain value or more. Or the 1st yoke 11a and the 2nd yoke 11b may have insulation.

  In the said embodiment, although the electromagnetic relay 100 was set as the structure which controls opening and closing of the two contact devices 1, it is not limited to this structure. The electromagnetic relay 100 may be configured to control opening and closing of three or more contact devices 1. For example, the exciting coil 14 of the electromagnet device 10 is disposed so as to have a pair of a stator and a movable element inside each of the three or more contact devices 1.

  In the embodiment, an insulating member is used to insulate the first yoke 11a and the second yoke 11b from each other. However, the present invention is not limited to this configuration. The first yoke 11a and the second yoke 11b may be insulated from each other by setting the distance between the first yoke 11a and the second yoke 11b to a certain value or more. Or the 1st yoke 11a and the 2nd yoke 11b may have insulation.

  The electromagnetic relay 100 of the above embodiment is a plunger type electromagnetic relay, but may be a hinge type electromagnetic relay. The electromagnet device 10b included in the hinge type electromagnetic relay will be briefly described with reference to FIG. As shown in FIG. 11, the electromagnet device 10b according to the present modification includes an exciting coil 400, a first iron core 500, a first yoke 501, a first armature 502, a second iron core 510, a second yoke 511, and a second iron coil 511. An armature 512 is provided. The first yoke 501 together with the first iron core 500 and the first armature 502 forms a first magnetic circuit through which magnetic flux generated when the exciting coil 400 is energized passes. The second yoke 511 together with the second iron core 510 and the second armature 512 forms a second magnetic circuit through which magnetic flux generated when the exciting coil 400 is energized passes. For example, the exciting coil 400 is arranged in a direction in which the central axis direction coincides with the vertical direction. A part of the first iron core 500 and a part of the second iron core 510 are arranged inside the exciting coil 400. When the exciting coil 400 is energized, a magnetic attractive force is generated between the first iron core 500 and the first armature 502 and between the second iron core 510 and the second armature 512. As a result, the first iron core 500 and the first armature 502 are magnetically coupled to the second iron core 510 and the second armature 512, respectively. The contact device 1a is driven as the first armature 502 is moved, and the contact device 1b is driven as the second armature 512 is moved.

  In the above embodiment, the electromagnetic relay is a so-called normally-off type electromagnetic relay in which the movable contact 8 is located in the open position when the excitation coil 14 is not energized. Good.

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

  The electromagnetic relay according to the above embodiment is an electromagnetic relay without a holder, but is not limited to this configuration, and may be an electromagnetic relay with a holder. Here, the holder is, for example, a rectangular cylinder having both front and rear sides opened, and the holder is combined with the movable contact 8 so that the movable contact 8 penetrates the holder in the front and rear direction. A contact pressure spring (for example, the first contact pressure spring 17 a) is disposed between the lower wall of the holder and the movable contact 8. That is, the front and rear central portions of the movable contact 8 are held by the holder. The upper end of the shaft is fixed to the holder. When the excitation coil 14 is energized, the shaft is pushed upward, so that the holder moves upward. With this movement, the movable contact 8 moves upward and positions the pair of movable contacts 81 and 82 in the closed position where they contact the pair of fixed contacts 311 and 321.

  The electromagnet device according to the embodiment has been described as applied to an electromagnetic relay, but the electromagnet device may be applied to an actuator.

(Summary)
As described above, the electromagnet device (10, 10b) according to the first aspect includes the exciting coil (14, 400) that generates magnetic flux when energized and the first fixed core (first stator 12a, first iron core 500). And the second fixed core (second stator 12b, second iron core 510), the first movable core (first movable element 13a, first armature 502) and the second movable core (second movable element 13b, second). Armature 512), a first yoke (11a, 501), and a second yoke (11b, 511). The first movable core moves so as to reduce the magnetic resistance between the first movable core and the first fixed core in response to energization of the exciting coil (14, 400). The second movable core moves so as to reduce the magnetic resistance between the second movable core and the second fixed core in response to energization of the exciting coil (14, 400). The first yoke (11a, 501), together with the first fixed core and the first movable core, constitute a first magnetic circuit (50) through which the magnetic flux generated by the exciting coil (14, 400) passes. The second yoke (11b, 511), together with the second fixed core and the second movable core, constitute a second magnetic circuit (51) through which the magnetic flux generated by the exciting coil (14, 400) passes. At least one of the set of the first fixed core and the second fixed core and the set of the first movable core and the second movable core fits inside the exciting coil (14, 400). The first yoke (11a, 501) and the second yoke (11b, 511) are electrically insulated from each other.

  According to this configuration, it is possible to control a plurality of devices (for example, contact devices 1a and 1b) to be driven. Further, at least a part of the first yoke (11a, 501) and the first fixed core forming the first magnetic circuit (50), and the second yoke (11b, 11) forming the second magnetic circuit (51). 511) and at least a part of the second fixed core are insulated from each other, so that the possibility that the first magnetic circuit (50) and the second magnetic circuit (51) are short-circuited is reduced.

  In the electromagnet device (10, 10b) of the second aspect, in the first aspect, the first fixed core and the second fixed core are disposed inside the exciting coil (14, 400).

  According to this configuration, since the magnetic flux generated in the exciting coil (14, 400) passes through the first fixed core and the second fixed core, the coupling between the first fixed core and the first movable core, and the second fixed core and the second fixed core. The coupling with the two movable cores can be surely performed.

  In the electromagnet device (10) of the third aspect, in the first or second aspect, the first movable core and the second movable core are disposed inside the exciting coil (14).

  According to this configuration, since the magnetic flux generated by the exciting coil (14) passes through the first movable core and the second movable core, the coupling between the first fixed core and the first movable core, and the second fixed core and the second movable core. Bonding with the core can be reliably performed.

  The electromagnet device (10, 10b) according to the fourth aspect is the second excitation coil (excitation coil 145) different from the first excitation coil as the excitation coil (14, 400) in any of the first to third aspects. 146). The second excitation coil is arranged so that the axis of the second excitation coil is located inside the first excitation coil. At least one of the first fixed core and the second fixed core is disposed inside the second excitation coil.

  According to this configuration, the coupling between the first fixed core and the first movable core and the coupling between the second fixed core and the second movable core can be performed individually. That is, the first magnetic circuit and the second magnetic circuit can be individually generated.

  In the electromagnet device (10, 10b) according to the fifth aspect, in the fourth aspect, the movable core corresponding to the fixed core among the first movable core and the second movable core is at least the first excitation coil or the second excitation coil. Thus, it is provided so as to be movable independently of the other movable core.

  According to this configuration, the first magnetic circuit and the second magnetic circuit can be individually generated.

  In the electromagnet device (10, 10b) of the sixth aspect, in any one of the first to fifth aspects, at least one of the first yoke (11a) and the second yoke (11b) is: It has L-shaped L-shaped yokes (first L-shaped yoke 125a, second L-shaped yoke 125b). The L-shaped yoke has side yokes (127a, 127b) arranged in parallel to the exciting coil (14, 400) in a direction orthogonal to the axial direction of the exciting coil (14, 400). The side yokes (127a, 127b) are arranged in a direction crossing the direction in which the first fixed core and the second fixed core are arranged.

  According to this structure, a member can be saved compared with the case where a yoke is made into a U shape. It is also assumed that both the first yoke (11a) and the second yoke (11b) have L-shaped yokes (first L-shaped yoke 125a and second L-shaped yoke 125b). At this time, when the electromagnet device (10) is viewed in plan, it is excited between the side yoke (127a) of the first yoke (11a) and the side yoke (127b) of the second yoke (11b). When the coil (14, 400) is present, the insulation distance between the first yoke (11a) and the second yoke (11b) can be increased.

  In the electromagnet device (10, 10b) of the seventh aspect, in any one of the first to fifth aspects, at least one of the first yoke (11a) and the second yoke (11b) is: It has L-shaped L-shaped yokes (first L-shaped yoke 125a, second L-shaped yoke 125b). The L-shaped yoke has side yokes (127a, 127b) arranged in parallel to the exciting coil (14, 400) in a direction orthogonal to the axial direction of the exciting coil (14, 400). The side yokes (127a, 127b) are arranged in the direction in which the first fixed core and the second fixed core are arranged.

  According to this structure, a member can be saved compared with the case where a yoke is made into a U shape. In addition, when both the first yoke (11a) and the second yoke (11b) have L-shaped yokes (first L-shaped yoke 125a, second L-shaped yoke 125b), the first The insulation distance between the yoke (11a) and the second yoke (11b) can be increased.

  The electromagnet device (10) of the eighth aspect is the first shaft (15a) to which the first movable core is attached and the second shaft to which the second movable core is attached in any one of the first to seventh aspects. A shaft (15b).

  According to this configuration, the first shaft (15a) and the second shaft (15b) can be moved according to the movement of the first movable core and the second movable core.

  In the electromagnet device (10) of the ninth aspect, in the eighth aspect, the first shaft (15a) and the second shaft (15b) move along the axial direction of the exciting coil (14).

  According to this configuration, the first shaft (15a) and the second shaft (15b) can be moved along the axis of the exciting coil (14) in accordance with the movement of the first movable core and the second movable core. it can.

  In any one of the first to ninth aspects, the electromagnet device (10) of the tenth aspect further includes an insulating member (uneven portions 190 and 195 and insulating plates 193 and 196) having electrical insulation. The insulating member insulates the first yoke (11a) and the first fixed core from the second yoke (11b) and the second fixed core.

  According to this configuration, the possibility that the first magnetic circuit (50) and the second magnetic circuit (51) are short-circuited can be further reduced.

  In the electromagnet device (10) of the eleventh aspect, in the tenth aspect, the insulating member is provided between the first yoke (11a) and the second yoke (11b).

  According to this configuration, the first magnetic circuit (50) and the second magnetic circuit (51) can be more reliably insulated.

  In the electromagnet device (10) of the twelfth aspect, in the eleventh aspect, the insulating members (uneven portions 190, 195) are arranged in the arrangement direction of the first yoke (11a) and the second yoke (11b). It has irregularities.

  According to this configuration, the creeping distance of the insulating member can be increased. As a result, the insulation between the first yoke (11a) and the second yoke (11b) can be increased.

  In the electromagnet device (10) of the thirteenth aspect, in any one of the first to twelfth aspects, the exciting coil (14) includes a first coil (141) and a second coil (142). By energizing the first coil (141) and the second coil (142), the first movable core and the second movable core are moved in a predetermined direction. When the first coil (141) is energized, the first movable core and the second movable core are held in a state of moving in a predetermined direction.

  According to this configuration, it is possible to selectively use coils that generate magnetic flux. As a result, current consumption can be reduced.

  The electromagnetic relay (100) of the fourteenth aspect includes at least one of the electromagnet device (10, 10b) of any one of the first to thirteenth aspects and a first fixed contact (for example, the fixed contacts 311 and 321 of the contact device 1a). A second fixed contact (for example, at least one of the fixed contacts 311 and 321 of the contact device 1b), a first movable contact (at least one of the movable contacts 81 and 82 of the contact device 1a), and a second movable contact A contact (at least one of the movable contacts 81 and 82 of the contact device 1b). The first movable contact moves between a closed position in contact with the first fixed contact and an open position away from the first fixed contact in accordance with the movement of the first movable core. The second movable contact moves between a closed position in contact with the second fixed contact and an open position away from the second fixed contact in accordance with the movement of the second movable core.

  According to this configuration, it is possible to control a plurality of devices to be driven (a contact device having a first movable contact and a contact device having a second movable contact). Further, at least a part of the first yoke (11a, 501) and the first fixed core forming the first magnetic circuit (50), and the second yoke (11b, 11) forming the second magnetic circuit (51). 511) and at least a part of the second fixed core are insulated from each other, so that the possibility that the first magnetic circuit (50) and the second magnetic circuit (51) are short-circuited is reduced.

1, 1a, 1b Contact device 10, 10b Electromagnet device 11a, 501 First yoke 11b, 511 Second yoke 12a First stator (first fixed core)
12b Second stator (second fixed core)
13a First mover (first moveable core)
13b Second mover (second moveable core)
14,400 Excitation coil (first excitation coil)
15a 1st shaft 15b 2nd shaft 50 1st magnetic circuit 51 2nd magnetic circuit 81,82 Movable contact 100 Electromagnetic relay 125a 1st L-shaped relay (L-shaped yoke)
125b 2nd L-shaped yoke (L-shaped yoke)
127a, 127b Side yoke 141 First coil 142 Second coil 145 Excitation coil (second excitation coil)
146 Excitation coil (second excitation coil)
190,195 Uneven portion 193,196 Insulating plate 311,321 Fixed contact 500 First iron core (first fixed core)
502 First armature (first movable core)
510 2nd iron core (2nd fixed core)
512 Second armature (second movable core)

Claims (14)

An exciting coil that generates magnetic flux when energized,
A first fixed core and a second fixed core;
The first movable core that moves so as to reduce the magnetic resistance between the first fixed core and the second fixed core moves so as to reduce the magnetic resistance according to energization of the exciting coil. A second movable core that
A first yoke constituting a first magnetic circuit through which the magnetic flux generated by the exciting coil passes together with the first fixed core and the first movable core;
A second yoke constituting a second magnetic circuit through which the magnetic flux generated by the exciting coil passes together with the second fixed core and the second movable core;
At least one of the set of the first fixed core and the second fixed core and the set of the first movable core and the second movable core is accommodated inside the excitation coil,
The electromagnet apparatus, wherein the first yoke and the second yoke are electrically insulated from each other. The electromagnet device according to claim 1, wherein the first fixed core and the second fixed core are arranged inside the exciting coil. The electromagnet apparatus according to claim 1, wherein the first movable core and the second movable core are disposed inside the excitation coil. A second excitation coil different from the first excitation coil as the excitation coil,
The second excitation coil is arranged such that the axis of the second excitation coil is located inside the first excitation coil;
The at least one fixed core among the first fixed core and the second fixed core is disposed inside the second excitation coil. The method according to any one of claims 1 to 3, Electromagnet device. Of the first movable core and the second movable core, the movable core corresponding to the fixed core is provided to be movable independently of the other movable core by at least the first excitation coil or the second excitation coil. The electromagnet device according to claim 4, wherein the electromagnet device is provided. At least one of the first and second yokes has an L-shaped L-shaped yoke,
The L-shaped yoke has side yokes arranged in parallel to the exciting coil in a direction orthogonal to the axial direction of the exciting coil,
The said side part yoke is arrange | positioned in the direction which cross | intersects with respect to the direction in which a said 1st fixed core and a said 2nd fixed core are located in a line. Electromagnet device. At least one of the first and second yokes has an L-shaped L-shaped yoke,
The L-shaped yoke has side yokes arranged in parallel to the exciting coil in a direction orthogonal to the axial direction of the exciting coil,
The electromagnet device according to any one of claims 1 to 5, wherein the side yoke is arranged in a direction in which the first fixed core and the second fixed core are arranged. A first shaft to which the first movable core is attached;
The electromagnet device according to any one of claims 1 to 7, further comprising a second shaft to which the second movable core is attached. The electromagnet device according to claim 8, wherein the first shaft and the second shaft move along an axial direction of the excitation coil. An insulating member having electrical insulation is further provided to insulate the first yoke and the first fixed core and the second yoke and the second fixed core from each other. Item 10. The electromagnet device according to any one of Items 1 to 9. The electromagnet device according to claim 10, wherein the insulating member is provided between the first yoke and the second yoke. The electromagnet device according to claim 11, wherein the insulating member has irregularities in an arrangement direction of the first yoke and the second yoke. The exciting coil has a first coil and a second coil,
By energizing the first coil and the second coil, the first movable core and the second movable core are moved in a predetermined direction,
The electromagnet device according to any one of claims 1 to 12, wherein the first movable core and the second movable core are held in a predetermined direction by energization of the first coil. The electromagnet device according to any one of claims 1 to 13,
A first fixed contact;
A second fixed contact;
A first movable contact that moves between a closed position in contact with the first fixed contact and an open position away from the first fixed contact in accordance with the movement of the first movable core;
And a second movable contact that moves between a closed position that contacts the second fixed contact and an open position that moves away from the second fixed contact in accordance with the movement of the second movable core. Electromagnetic relay.

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