Electromagnetic relay

Abstract

To obtain a simplified structure.SOLUTION: A coil 21 is wound on a bobbin 22. An iron core 23 is vertically inserted into the coil 21 along a first axis A1. An armature 33 has a bottom face which faces a top face of the iron core 23. A first movable spring 31 has a first movable contact facing a first fixed contact F1 along the first axis A1 to contact and separate from the first fixed contact F1. A second movable spring 52 has a second movable contact facing a second fixed contact to contact and separate from the second fixed contact. A card 34 causes the second movable contact to contact or separate from the second fixed contact according to a switchover between the excitation and non-excitation of the coil 21. The first movable spring 31 is fixed to the top face of the armature 33. The armature 33 has both ends, a first end E1 and a second end E2, in the top face view. The first movable contact is provided on the first movable spring 31 on the first end E1 side of the armature 33 in the top face view. The card 34 is provided on the second end E2 side of the armature 33 in the top face view.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure generally relates to electromagnetic relays, and more particularly to electromagnetic relays having two contact devices each including a fixed contact and a movable contact.

Background Art

[0002] Patent Document 1 discloses an electromagnetic relay. The electromagnetic relay of Patent Document 1 includes a fixed terminal portion, a movable terminal portion, an auxiliary fixed terminal portion, an auxiliary movable terminal portion, a contactor, an electromagnet portion, and a return spring.

[0003] The fixed terminal portion has an external input / output terminal portion and an external output / input terminal portion. The movable terminal portion can electrically connect the external input / output terminal portion and the external output / input terminal portion. The auxiliary fixed terminal portion has an auxiliary external input / output terminal portion and an auxiliary external output / input terminal portion. The auxiliary movable terminal portion can electrically connect the auxiliary external input / output terminal portion and the auxiliary external output / input terminal portion.

[0004] When the contactor switches whether the movable terminal portion is electrically connected to each of the external input / output terminal portion and the external output / input terminal portion, the contactor moves each of the movable terminal portion and the auxiliary movable terminal portion so as to switch whether the auxiliary movable terminal portion is electrically connected to each of the auxiliary external input / output terminal portion and the auxiliary external output / input terminal portion.

[0005] The electromagnet portion generates an electromagnetic force for driving the contactor so as to move the movable terminal portion and the auxiliary movable terminal portion. When the electromagnetic force of the electromagnet portion disappears, the contactor is returned to its original position by the restoring force of the return spring.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] In an electromagnetic relay, simplification of the structure may be desired.

[0008] An object of the present disclosure is to simplify the structure.

Means for Solving the Problems

[0009] An electromagnetic relay according to an aspect of the present disclosure includes a coil, a bobbin, a core, an armature, a first fixed contact, a first movable spring, a second fixed contact, a second movable spring, and a card. The coil is wound around the bobbin. The core is disposed inside the coil. The armature faces the core. The first movable spring has a first movable contact. The first movable contact makes contact with and separates from the first fixed contact. The second movable spring has a second movable contact. The second movable contact makes contact with and separates from the second fixed contact. The card separates the second movable contact from and brings it into contact with the second fixed contact in response to switching between energization and non-energization of the coil. The first movable spring is fixed to the armature. The card moves upward when the first movable contact moves downward, and moves downward when the first movable contact moves upward. The first movable contact moves along a first contact separation axis to contact and separate from the first fixed contact. The second movable contact moves along a second contact separation axis to contact and separate from the second fixed contact. The second contact separation axis is along the first contact separation axis. An electromagnetic relay according to one aspect of the present disclosure includes a coil, an iron core, an armature, a first fixed contact, a first movable spring, a second fixed contact, a second movable spring, and a card. The iron core is disposed inside the coil. The armature faces the iron core. The first movable spring has a first movable contact disposed at a position overlapping the first fixed contact in a top view. The second movable spring has a second movable contact disposed at a position overlapping the second fixed contact in a top view. The card makes the second movable contact contact and separate from the second fixed contact. The armature has a first end and a second end. The second end is located farther from the first movable contact than the first end and closer to the second movable contact than the first end. The second end moves upward when the first end moves downward and moves downward when the first end moves upward. The first movable spring is mechanically coupled to the armature. When the first end of the armature moves downward, the first movable contact moves downward, and when the first end of the armature moves upward, the first movable contact moves upward. The card is located closer to the second end of the armature than the first movable contact. The card is mechanically coupled to the armature. The card moves upward when the first movable contact moves downward and moves downward when the first movable contact moves upward. The first movable contact moves along a first contact separation axis to contact and separate from the first fixed contact. The second movable contact moves along a second contact separation axis to contact and separate from the second fixed contact. The second contact separation axis is along the first contact separation axis.

Advantages of the Invention

[0010] According to the present disclosure, there is an advantage that it is possible to simplify the structure.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Embodiments for Carrying Out the Invention

[0012] The electromagnetic relay according to the embodiment of the present disclosure will be described with reference to the drawings. Each of the drawings described in the following embodiments is a schematic diagram, and the ratio of the size and thickness of each component in the drawing does not necessarily reflect the actual dimensional ratio.

[0013] (1) Overview As shown in FIGS. 2, 3, 14A, and 15A, the electromagnetic relay 100 according to the present embodiment includes a coil 21, a bobbin 22, an iron core 23, a pole piece 33, a first fixed contact F1, a first movable spring 31, a second fixed contact F2, a second movable spring 52, and a card 34.

[0014] The coil 21 is wound around the bobbin 22. The iron core 23 is inserted vertically along the first axis A1 inside the coil 21. The pole piece 33 has a lower surface facing the upper surface of the iron core 23. The first movable spring 31 has a first movable contact M1. The first movable contact M1 faces the first fixed contact F1 along the first axis A1 and makes contact with and separates from the first fixed contact F1. The second movable spring 52 has a second movable contact M2. The second movable contact M2 faces the second fixed contact F2 and makes contact with and separates from the second fixed contact F2. The card 34 causes the second movable contact M2 to make contact with and separate from the second fixed contact F2 in response to switching between excitation and non-excitation of the coil 21.

[0015] The first movable spring 31 is fixed to the upper surface of the pole piece 33. The pole piece 33 has a first end E1 and a second end E2 (see FIG. 9) at both ends in a top view. The first movable contact M1 is provided on the first movable spring 31 on the side of the first end E1 of the pole piece 33 in a top view. The card 34 is provided on the side of the second end E2 of the pole piece 33 in a top view.

[0016] In the electromagnetic relay 100 of the present embodiment, the first movable contact M1 is provided on the first movable spring 31, and the first movable spring 31 is fixed to the terminal 33. Therefore, the first movable contact M1 moves by the attractive force acting from the iron core 23 to the terminal 33 and the spring force of the first movable spring 31. Therefore, in the electromagnetic relay 100 of the present embodiment, for example, compared with an electromagnetic relay of a comparative example including a member (return spring) that moves the first movable contact M1 separately from the member on which the first movable contact M1 is provided, it is possible to simplify the structure.

[0017] Further, in the electromagnetic relay 100 of the present embodiment, the first movable spring 31 is fixed to the upper surface of the terminal 33. Therefore, when the first movable contact M1 is provided on the lower surface of the first movable spring 32, the first movable contact M1 can be brought into contact with the first fixed contact F1 by using the attractive force along the first axis A1 acting from the iron core 23 to the terminal 33. Thereby, it becomes possible to increase the contact pressure between the first movable contact M1 and the first fixed contact F1.

[0018] Further, in the electromagnetic relay 100 of the present embodiment, on the side of the first end E1 of the terminal 33, the first movable contact M1 is provided on the first movable spring 31, and on the side of the second end E2 of the terminal 33, a card 34 for contacting and separating the second movable contact M2 from the second fixed contact F2 is provided. Therefore, it becomes possible to increase the distance between the first movable contact M1 and the second movable contact M2. Thereby, it is possible to reduce the possibility that an arc that may occur at the first movable contact M1 affects the second movable contact M2 or an arc that may occur at the second movable contact M2 affects the first movable contact M1.

[0019] (2) Details Hereinafter, the electromagnetic relay 100 of the present embodiment will be described in detail with reference to the drawings.

[0020] The electromagnetic relay 100 is a so-called hinge-type relay. The electromagnetic relay 100 includes a first contact device including a first movable contact M1 and a first fixed contact F1, and a second contact device including a second movable contact M2 and a second fixed contact F2. A conductive component electrically connected to the first contact device and a conductive component electrically connected to the second contact device are electrically insulated from each other.

[0021] The electromagnetic relay 100 is mounted on, for example, an electric vehicle. The electromagnetic relay 100 is used, for example, for the purpose of turning on and off the circuit of the charging cable of an electric vehicle. The first contact device is inserted into the circuit of the charging cable. The second contact device is used for monitoring the state of the first contact device, for example, detecting welding, etc.

[0022] As shown in FIGS. 1 and 2, the electromagnetic relay 100 includes a relay body 1 and a case 9.

[0023] As shown in FIGS. 2 to 4, the relay body 1 is configured by coupling a plurality of blocks. The relay body 1 includes an electromagnet block 2, a movable block 3, a first block (fixed block) 4, and a second block (auxiliary block) 5, which are coupled to form the relay body 1. Hereinafter, the combination of the electromagnet block 2 and the movable block 3 may be referred to as a main body block 10 (see FIG. 3).

[0024] As shown in FIGS. 3 and 4, the main body block 10 includes a coil 21, an iron core 23 inserted inside the coil 21, and an armature 33.

[0025] Hereinafter, the virtual axis extending along the core 23 is also referred to as the first axis A1. The pole piece 33 is arranged along the core 23 along the first axis A1. Further, the virtual axis along which the main body block 10 and the first block 4 are arranged side by side is also referred to as the second axis A2. The second axis A2 intersects the first axis A1 and is orthogonal here. Further, the virtual axis intersecting both the first axis A1 and the second axis A2 is also referred to as the third axis A3. Here, the third axis A3 is orthogonal to both the first axis A1 and the second axis A2. Also, on the first axis A1, the side where the pole piece 33 is located as viewed from the core 23 is also referred to as "upper", and on the first axis A1, the side where the core 23 is located as viewed from the pole piece 33 is also referred to as "lower". Further, on the second axis A2, the side where the first block 4 is located as viewed from the main body block 10 is also referred to as "left", and on the second axis A2, the side where the main body block 10 is located as viewed from the first block 4 is also referred to as "right". Also, both sides on the third axis A3 are respectively referred to as "front" and "rear".

[0026] Also, in the present disclosure, "top view" means viewing from above along the first axis A1, "side view" means viewing from the right or left along the second axis A2, and "front view" means viewing from the front along the third axis A3.

[0027] As shown in FIG. 3, the first block 4 is assembled to the main body block 10 from the left side along the second axis A2 and fixed to the main body block 10. Further, the second block 5 is assembled to the main body block 10 from the right side along the second axis A2 and fixed to the main body block 10. Note that in the present disclosure, "fixed" can include both meanings of being detachably fixed by fitting or the like and being non-detachably fixed by adhesion or welding or the like.

[0028] (2.1) Electromagnet block As shown in FIGS. 4 and 5, the electromagnet block 2 includes a coil 21, a bobbin 22, a core 23, an insulating member 24, a yoke 25, and two coil terminals 26.

[0029] As shown in FIG. 5, the bobbin 22 has a main body portion 61, an upper flange portion 62 provided on the upper part of the main body portion 61, and a lower flange portion 63 provided on the lower part of the main body portion 61. The main body portion 61, the upper flange portion 62, and the lower flange portion 63 are integrally formed as a molded body of synthetic resin having electrical insulation properties.

[0030] The main body portion 61 is a hollow cylindrical shape whose axis is along the first axis A1. A coil 21 is wound around the main body portion 61. The axis of the coil 21 (the virtual axis around which the winding of the coil 21 is wound) substantially coincides with the axis of the main body portion 61.

[0031] As shown in FIGS. 5 and 6, the upper flange portion 62 includes an upper flange main body 621 having a substantially rectangular plate shape in a top view. The upper flange main body 621 has a circular hole 622 communicating with the internal space of the main body portion 61 at a position to the left of its center. An annular support base portion 623 protruding upward is provided around the hole 622 on the upper surface of the upper flange main body 621.

[0032] The upper flange portion 62 includes a first wall portion 64, a second wall portion 65, and a third wall portion 66 on the upper surface of the upper flange main body 621.

[0033] The first wall portion 64 is provided along the first side (front side) along the second axis A2 of the upper flange main body 621. The first wall portion 64 protrudes upward from the upper surface of the upper flange main body 621. The first wall portion 64 is continuously formed along the second axis A2. The first wall portion 64 is provided at a position overlapping a virtual line extending forward along the third axis A3 from the center of the hole 622 of the upper flange main body 621.

[0034] The first wall portion 64 includes a base portion 641 formed on the upper surface of the upper flange main body 621 and a protruding rib 642 formed on the upper surface of the base portion 641. The base portion 641 is substantially in the shape of a rectangular parallelepiped extending along the second axis A2. The protruding rib 642 is substantially in the shape of a protruding strip extending along the second axis A2.

[0035] The thickness of the protruding rib 642 (dimension along the third axis A3) is thinner than the thickness of the base 641. The front surface (outer surface) of the base 641 and the front surface of the protruding rib 642 are flush (in the same plane). Therefore, there is a step between the rear surface (inner surface) of the protruding rib 642 and the base 641.

[0036] The length of the protruding rib 642 (dimension along the second axis A2) is shorter than the length of the base 641. In the second axis A2, the protruding rib 642 is located substantially at the center of the upper surface of the base 641. Therefore, there is a step between the left side surface of the protruding rib 642 and the base 641, and there is a step between the right side surface of the protruding rib 642 and the base 641. Thus, the first wall portion 64 has a first recess 643 recessed along the first axis A1. The first wall portion 64 has, as the first recess 643, two first recesses 643 located at both ends (left end and right end) of the first wall portion 64 in the second axis A2.

[0037] The second wall portion 65 is provided along the second side (rear side) along the second axis A2 in the upper flange main body 621. The second wall portion 65 protrudes upward from the upper surface of the upper flange main body 621. The second wall portion 65 is continuously formed along the second axis A2. The second wall portion 65 is provided at a position overlapping a virtual line extending rearward along the third axis A3 from the center of the hole 622 of the upper flange main body 621.

[0038] The second wall portion 65 faces the first wall portion 64 across the hole 622 in the third axis A3. In a top view, the first wall portion 64 and the second wall portion 65 are symmetric.

[0039] The second wall portion 65 includes a base 651 formed on the upper surface of the upper flange main body 621 and a protruding rib 652 formed on the upper surface of the base 651. The base 651 is substantially in the shape of a rectangular parallelepiped extending along the second axis A2. The protruding rib 652 is substantially in the shape of a protruding strip extending along the second axis A2.

[0040] The thickness of the protruding rib 652 (dimension along the third axis A3) is thinner than the thickness of the base portion 651. The rear surface (outer surface) of the base portion 651 and the rear surface of the protruding rib 652 are flush (in the same plane). Therefore, there is a step between the front surface (inner surface) of the protruding rib 652 and the base portion 651.

[0041] The length of the protruding rib 652 (dimension along the second axis A2) is shorter than the length of the base portion 651. In the second axis A2, the protruding rib 652 is located approximately at the center of the upper surface of the base portion 651. Therefore, there is a step between the left side surface of the protruding rib 652 and the base portion 651, and there is a step between the right side surface of the protruding rib 652 and the base portion 651. Thus, the second wall portion 65 has a second concave portion 653 recessed along the first axis A1. The second wall portion 65 has two second concave portions 653 located at both ends (left end and right end) of the second wall portion 65 in the second axis A2 as the second concave portion 653.

[0042] The third wall portion 66 is provided on the upper surface of the upper flange main body 621 along the third axis A3. The third wall portion 66 is provided along the third side (left side) of the upper flange main body 621 along the third axis A3. The third wall portion 66 protrudes upward from the upper surface of the upper flange main body 621. The third wall portion 66 is located on the left side of the hole 622.

[0043] The third wall portion 66 is in a substantially rectangular parallelepiped shape extending along the third axis A3. The height of the third wall portion 66 (dimension along the first axis A1) is substantially equal to the height of the base portion 641 of the first wall portion 64 and substantially equal to the height of the base portion 651 of the second wall portion 65.

[0044] The third wall portion 66 connects between the first end (left end) of the first wall portion 64 and the first end (left end) of the second wall portion 65. More specifically, the third wall portion 66 connects between the rear surface of the first end (left end) of the base portion 641 of the first wall portion 64 and the front surface of the first end (left end) of the base portion 651 of the second wall portion 65. The third wall portion 66 is continuously formed along the third axis A3. In the upper flange portion 62, the first wall portion 64, the second wall portion 65, and the third wall portion 66 form a C shape in a top view.

[0045] As shown in FIGS. 5 and 6, the upper flange portion 62 further includes a protruding plate portion 624, a holding protrusion 625, and a positioning portion 626.

[0046] The protruding plate portion 624 is plate-shaped and protrudes leftward along the second axis A2 from the third side (left piece) of the upper flange main body 621. The protruding plate portion 624 is in the same plane as the upper flange main body 621.

[0047] The holding protrusion 625 is provided on the upper surface of the protruding plate portion 624. The holding protrusion 625 is a rib extending along the second axis A2 at a position near the front end on the upper surface of the protruding plate portion 624. One end of the holding protrusion 625 is connected to the left side surface of the third wall portion 66.

[0048] The positioning portion 626 is a protrusion provided along the third axis A3 on the upper surface of the upper flange main body 621. The positioning portion 626 is provided along the fourth side (right side) along the third axis A3 of the upper flange main body 621. The length of the positioning portion 626 (dimension along the third axis A3) is shorter than the length of the fourth side (right side) of the upper flange main body 621. The positioning portion 626 is provided at the center of the fourth side (right side) of the upper flange main body 621 on the third axis A3. The first end (front end) of the positioning portion 626 and the second end (right end) of the first wall portion 64 are not connected and there is a gap therebetween. The second end (rear end) of the positioning portion 626 and the second end (right end) of the second wall portion 65 are not connected and there is a gap therebetween.

[0049] As shown in FIGS. 5 and 7, the lower flange portion 63 includes an upper wall portion 631, a lower wall portion 632, a front wall portion 633, a rear wall portion 634, and a left wall portion 635. The lower flange portion 63 is formed in a hollow rectangular box shape. The lower flange portion 63 has an opening on one side surface (right side surface) of the second axis A2. That is, the lower flange portion 63 is provided with an opening 630 on the right side surface.

[0050] The upper wall portion 631 is plate-shaped with a substantially rectangular shape in top view. The upper wall portion 631 has a circular hole 636 at its center, which connects the internal space of the main body portion 61 and the internal space of the lower flange portion 63.

[0051] The lower wall portion 632 is in the shape of a plate that is approximately rectangular when viewed from above. The lower wall portion 632 has a circular hole 637 at its center that connects the internal space and the external space of the lower flange portion 63. In a top view, the center of the hole 637 in the lower wall portion 632 substantially coincides with the center of the hole 636 in the upper wall portion 631.

[0052] The lower wall portion 632 is longer in length (dimension along the second axis A2) than the upper wall portion 631. In a top view, the right end of the lower wall portion 632 protrudes to the right of the right end of the upper wall portion 631.

[0053] On the lower surface of the lower wall portion 632, an engaging protrusion 638 that protrudes downward is provided at the center of the third axis A3 at its left end.

[0054] The front wall portion 633 and the rear wall portion 634 are in the shape of plates that are approximately rectangular when viewed from the front. The front wall portion 633 connects between the front edge of the upper wall portion 631 and the front edge of the lower wall portion 632. The rear wall portion 634 connects between the rear edge of the upper wall portion 631 and the rear edge of the lower wall portion 632.

[0055] The left wall portion 635 is in the shape of a plate that is approximately rectangular when viewed from the side. The left wall portion 635 connects between the left edge of the upper wall portion 631 and the left edge of the lower wall portion 632.

[0056] The lower flange portion 63 has two holding grooves 639 for attaching two coil terminals 26 respectively at both ends (front end portion and rear end portion) of the third axis A3 at its left end. The holding grooves 639 are formed across the upper wall portion 631, the left wall portion 635, and the lower wall portion 632.

[0057] As shown in FIGS. 4 and 5, the two coil terminals 26 are respectively inserted into the two holding grooves 639 of the lower flange portion 63 and held by the lower flange portion 63. One of the two coil terminals 26 is connected to the first end of the coil 21, and the other is connected to the second end of the coil 21.

[0058] As shown in FIG. 5, the coil terminal 26 includes a first terminal portion 261 connected to the coil 21, a second terminal portion 262 connected to an external device, and a connecting portion 263 connecting between the first terminal portion 261 and the second terminal portion 262. The first terminal portion 261 protrudes upward from the upper wall portion 631 of the lower flange portion 63. The second terminal portion 262 protrudes downward from the lower wall portion 632 of the lower flange portion 63. As shown in FIG. 1, the second terminal portion 262 is exposed downward from the case 9.

[0059] As shown in FIG. 5, the iron core 23 is formed in a cylindrical shape. The iron core 23 is inserted vertically along the first axis A1 into the bobbin 22. The iron core 23 is inserted into the main body portion 61 of the bobbin 22. The iron core 23 has a disk-shaped magnetic pole portion 231 at one end (upper end) on the first axis A1. As shown in FIG. 4, the magnetic pole portion 231 is exposed above the bobbin 22. The lower surface of the magnetic pole portion 231 is supported by the support base portion 623 of the upper flange portion 62 of the bobbin 22. The iron core 23 has a relatively small-diameter thin-diameter portion 232 at its lower end portion.

[0060] As shown in FIGS. 4 and 5, the coil 21 is wound around the bobbin 22. The coil 21 is wound around the periphery of the main body portion 61 of the bobbin 22. Therefore, the coil 21 is wound around the iron core 23.

[0061] The first end of the coil 21 is connected to one of the two coil terminals 26, and the second end of the coil 21 is connected to the other of the two coil terminals 26.

[0062] As shown in FIG. 5, the yoke 25 includes a first yoke 251 and a second yoke 252.

[0063] The first yoke 251 is a rectangular plate shape extending along the first axis A1. The second yoke 252 is a rectangular plate shape extending along the second axis A2. The lower end of the first yoke 251 is connected to the right end of the second yoke 252, and the first yoke 251 and the second yoke form an inverted L shape in a front view.

[0064] The first yoke 251 has two fixing protrusions 253 for fixing the first movable spring 31 at both ends (front end and rear end) of the third axis A3 on its right side. The fixing protrusion 253 can be formed, for example, by pushing out the portion of the left side of the first yoke 251 corresponding to the fixing protrusion 253 from the left side to the right side.

[0065] The second yoke 252 has a through hole 254. The through hole 254 penetrates the second yoke 252 along the first axis A1.

[0066] As shown in FIG. 4, the first yoke 251 is disposed on the right side of the coil 21. The second yoke 252 is inserted from the right side through the opening 630 into the internal space of the lower flange portion 63 of the bobbin 22. Then, the iron core 23 (more specifically, the small-diameter portion 232) is inserted into the through hole 254 of the second yoke 252 from above. The yoke 25 forms a magnetic circuit together with the iron core 23.

[0067] The length of the first yoke 251 (dimension along the first axis A1) is larger than the interval between the upper flange portion 62 (upper flange main body 621) and the lower flange portion 63 (upper wall portion 631) of the bobbin 22. The width of the first yoke 251 (dimension along the third axis A3) is substantially the same as the diameter of the coil 21. In a side view seen from the right side, the first yoke 251 covers substantially the entire coil 21.

[0068] As shown in FIGS. 4 and 5, the insulating member 24 is disposed between the bobbin 22 and the yoke 25. The insulating member 24 is positioned between the coil 21 and the yoke 25. The insulating member 24 insulates between the coil 21 and the yoke 25. The insulating member 24 covers the coil 21 from the right side. The insulating member 24 is covered from the right side by the yoke 25.

[0069] As shown in FIGS. 5 and 8, the insulating member 24 includes a main body portion 241, a first covering portion 242, a first connecting portion 243, a second covering portion 244, a second connecting portion 245, a pair of first protrusions 246, and a pair of second protrusions 247. The main body portion 241, the first covering portion 242, the first connecting portion 243, the second covering portion 244, the second connecting portion 245, the pair of first protrusions 246, and the pair of second protrusions 247 are integrally formed as a molded body of a synthetic resin having electrical insulation properties.

[0070] The main body portion 241 has a plate shape with a substantially C-shaped cross section perpendicular to the first axis A1. The main body portion 241 covers the coil 21 from the right side facing the right side surface of the coil 21. The left surface of the main body portion 241 has a central portion extending back and forth along the third axis A3 so as to conform to the curvature of the right side surface of the coil 21, and both end portions extending obliquely forward to the left and obliquely backward to the left from both ends of the third axis A3 of the central portion with respect to the central portion. Further, the main body portion 241 is covered from the right side by the first yoke 251.

[0071] The first covering portion 242 is located below the main body portion 241. The first covering portion 242 has a plate shape having a width along the second axis A2.

[0072] The first covering portion 242 covers at least a part of the second yoke 252. The first covering portion 242 covers at least a part of the second yoke 252 from above. The first covering portion 242 covers a portion near the right end of the second yoke 252 that is connected to the first yoke 251 (see FIG. 4). The first covering portion 242 integrally has an upper covering portion 291 that covers the upper surface of the second yoke 252, a front covering portion 292 that covers the front side surface of the second yoke 252, and a rear covering portion 293 that covers the rear side surface of the second yoke 252. That is, the first covering portion 242 covers the second yoke 252 from above and from the front and rear three directions. The portion of the second yoke 252 in which the through hole 254 is formed is not covered by the first covering portion 242 and is exposed from the first covering portion 242.

[0073] The first covering portion 242, together with the second yoke 252, is inserted into the internal space of the lower flange portion 63 of the bobbin 22 through the opening 630 from the right side.

[0074] With the first covering portion 242 and the second yoke 252 inserted into the opening 630, from below along the first axis A1, the lower wall portion 632 of the lower flange portion 63, the second yoke 252, the first covering portion 242 of the insulating member 24, the upper wall portion 631 of the lower flange portion 63, and the coil 21 are arranged in this order. Therefore, the upper surface of the first covering portion 242 is covered from above by the upper wall portion 631 of the lower flange portion 63. Also, the lower surface of the second yoke 252 is covered from below by the lower wall portion 632 of the lower flange portion 63.

[0075] The first connecting portion 243 connects between the main body portion 241 and the first covering portion 242. The first connecting portion 243 connects between the lower edge of the right end of the main body portion 241 and the right end of the upper surface of the first covering portion 242.

[0076] The second covering portion 244 is located above the main body portion 241. The second covering portion 244 is plate-shaped having a width along the second axis A2.

[0077] The second covering portion 244 covers at least a part of the upper surface of the upper flange portion 62 (upper flange main body 621) of the bobbin 22. As shown in FIG. 4, the second covering portion 244 covers the right end portion of the upper surface of the upper flange main body 621. The magnetic pole portion 231 of the iron core 23 is exposed without being covered by the second covering portion 244.

[0078] The second covering portion 244 has steps at the left front end and left rear end portions in a top view. The right end portions of the base portions 641 of the first wall portion 64 and the base portions 651 of the second wall portion 65 of the upper flange portion 62 are fitted into these step portions. As shown in FIG. 4, in a top view, the base portion 641 of the first wall portion 64, the third wall portion 66, the base portion 651 of the second wall portion 65, and the second covering portion 244 of the insulating member 24 are connected in a rectangular frame shape.

[0079] As shown in FIG. 4, the upper surface of the second covering portion 244 has a height position (position on the first axis A1) that is substantially the same as the height positions of the base portion 641 of the first wall portion 64 and the base portion 651 of the second wall portion 65 of the upper flange portion 62.

[0080] As shown in FIG. 8, a recess 248 is formed along the second axis A2 on the lower surface of the second covering portion 244. The positioning portion 626 of the upper flange portion 62 of the bobbin 22 is fitted into the recess 248 along the second axis A2, thereby positioning the insulating member 24 with respect to the bobbin 22.

[0081] The second connecting portion 245 connects between the main body portion 241 and the second covering portion 244. The second connecting portion 245 connects between the upper edge of the right end of the main body portion 241 and the lower surface of the right end of the second covering portion 244.

[0082] A groove is formed along the third axis A3 between the second covering portion 244, the second connecting portion 245, and the main body portion 241. The right end portion of the upper flange main body 621 of the upper flange portion 62 of the bobbin 22 is fitted into this groove.

[0083] A pair of first protrusions 246 protrude rightward along the second axis A2 from the right surfaces of the front covering portion 292 and the rear covering portion 293 in the first covering portion 242, respectively. The first protrusion 246 is substantially rectangular parallelepiped-shaped extending along the second axis A2. A claw 249 protruding downward is formed on the lower surface of the first protrusion 246.

[0084] A pair of second protrusions 247 protrude rightward along the second axis A2 from the front end portion and the rear end portion, respectively, of the upper end on the right surface of the main body portion 241. The second protrusion 247 is L-shaped (or inverted L-shaped) in a side view seen from the right side.

[0085] (2.2) Movable block As shown in FIGS. 4 and 9, the movable block 3 includes a first movable spring 31, a first movable contact member 32, a terminal 33, and a card 34.

[0086] The first movable spring 31 includes leg pieces 35, a fixed piece 36, a spring piece 37, and a movable piece 38. The first movable spring 31 includes two leg pieces 35. The two leg pieces 35, the fixed piece 36, the spring piece 37, and the movable piece 38 are integrally formed of a conductive metal material.

[0087] The leg piece 35 is a rectangular plate shape extending along the first axis A1. The two leg pieces 35 are arranged side by side along the third axis A3. The leg piece 35 is a terminal connected to an external electrical device. As shown in FIG. 1, the leg piece 35 is exposed downward from the case 9.

[0088] The fixing piece 36 is a plate shape extending upward from the upper end of the leg piece 35. The fixing piece 36 is a portion fixed to the yoke 25, more specifically, the first yoke 251. The fixing piece 36 has two fixing holes 311 into which the two fixing protrusions 253 of the first yoke 251 are respectively inserted.

[0089] The spring piece 37 is an inverted L-shaped plate shape with the top and bottom reversed in a front view. The spring piece 37 has flexibility. The spring piece 37 has a plate-shaped first leaf spring portion 371 extending upward from the upper end of the fixing piece 36, a curved portion 372 curved leftward from the upper end of the first leaf spring portion 371, and a second leaf spring portion 373 extending leftward from the left end of the curved portion 372. The first movable spring 31 has a through hole 312 extending in a long hole shape from the upper end of the first leaf spring portion 371 through the curved portion 372 to the right end of the second leaf spring portion 373 at the central portion on the third axis A3.

[0090] The movable piece 38 is a plate shape extending leftward from the left end of the second leaf spring portion 373 of the spring piece 37. The joint portion between the movable piece 38 and the spring piece 37 (the second leaf spring portion 373) is bent in a V shape in a front view. The movable piece 38 is movable up and down along the first axis A1 according to the deflection of the spring piece 37. The movable piece 38 is inclined with respect to the normal direction of the fixing piece 36.

[0091] The movable piece 38 includes a terminal holder 381 and a contact holder 382. The terminal holder 381 is located relatively on the right side of the movable piece 38. The contact holder 382 is located relatively on the left side of the movable piece 38.

[0092] The terminal 33 is held by the terminal holder 381. Three fixing holes 313 are formed side by side along the third axis A3 in the terminal holder 381.

[0093] The first movable contact M1 is held by the contact holding portion 382. The contact holding portion 382 has a through hole 314. The through hole 314 is provided relatively rearward in the third axis A3 among the first movable springs 31. Therefore, the center of the through hole 314 is located rearward of the center of the central fixing hole 313 among the three fixing holes 313.

[0094] As shown in FIG. 9, the terminal 33 includes a terminal body 331, fixing protrusions 332, a hook piece 333, and a protrusion 334. The terminal 33 has three fixing protrusions 332. The terminal 33 also has two hook pieces 333. The terminal body 331, the three fixing protrusions 332, the two hook pieces 333, and the protrusion 334 are integrally formed of a magnetic material.

[0095] The terminal body 331 is in the shape of a plate that is substantially rectangular in top view. The three fixing protrusions 332 are provided on the upper surface of the terminal body 331. The three fixing protrusions 332 are arranged along the third axis A3. The three fixing protrusions 332 of the terminal 33 are inserted into the three fixing holes 313 of the terminal holding portion 381 of the first movable spring 31 from below, and the tips of the fixing protrusions 332 are crushed, so that the terminal 33 is fixed to the first movable spring 31 (terminal holding portion 381). The terminal 33 is disposed below the first movable spring 31 and fixed to the first movable spring 31. That is, the first movable spring 31 is fixed to the upper surface of the terminal 33.

[0096] As shown in FIGS. 2 and 3, with the movable block 3 fixed to the electromagnet block 2, the lower surface of the terminal 33 faces the upper surface of the iron core 23 (the upper surface of the magnetic pole portion 231).

[0097] In top view, the terminal 33 has a first end E1 and a second end E2 on a second axis A2 that intersects the first axis A1 (see FIG. 9). In the present embodiment, the first end E1 is the left end and the second end E2 is the right end.

[0098] The two engaging pieces 333 are at the second end E2 (right end) of the pole piece 33. The two engaging pieces 333 project downward from the front end portion and the rear end portion of the right side surface of the pole piece body 331 respectively. As shown in FIG. 3, the engaging piece 333 is hooked on the upper end portion of the right surface of the first yoke 251. Therefore, the pole piece 33 will rotate about the engaging piece 333 as a fulcrum according to the presence or absence of the attractive force between the pole piece 33 and the iron core 23. The movable piece 38 of the first movable spring 31 moves up and down along the first axis A1 together with the pole piece body 331.

[0099] The protrusion 334 is at the second end E2 (right end) of the pole piece 33. The protrusion 334 projects along the longitudinal axis of the pole piece 33 from the center of the third axis A3 on the right side surface of the pole piece body 331 (the portion between the two engaging pieces 333). The protrusion 334 is formed in a substantially rectangular parallelepiped shape. The protrusion 334 projects to the right of the first movable spring 31 through the through hole 312 of the first movable spring 31.

[0100] As shown in FIG. 9, the first movable contact member 32 includes a head 321 and a body 322.

[0101] The shape of the head 321 is a frustum of a cone. The axis of the head 321 is along the first axis A1. The lower surface of the head 321 functions as the first movable contact M1. Among the first movable contact member 32, the lower surface that functions as the first movable contact M1 is formed of, for example, a silver alloy (AgNi or AgSnO2). Among the first movable contact member 32, the parts other than the first movable contact M1 are formed of a copper alloy such as tough pitch copper. Among the first movable contact member 32, the surface (lower surface) that functions as the first movable contact M1 is spherical. Note that the surface (lower surface) that functions as the first movable contact M1 among the first movable contact member 32 may be planar or dome-shaped.

[0102] The body portion 322 protrudes from the upper end of the head portion 321. The body portion 322 is inserted into the through hole 314 of the contact holding portion 382 of the first movable spring 31. The first movable contact member 32 is fixed to the first movable spring 31 by caulking with the body portion 322 passed through the through hole 314 of the contact holding portion 382. Thereby, the first movable contact member 32 is electrically connected to the first movable spring 31.

[0103] Note that the first movable contact M1 may be integrally formed with the first movable spring 31. For example, a part of the metal plate constituting the first movable spring 31 may be protruded downward, and the tip of the protruded portion may be used as the first movable contact M1.

[0104] Thus, the first movable contact M1 is provided on the first movable spring 31 on the side of the first end E1 (left end) of the contactor 33 in a top view. The first movable contact M1 moves up and down along the first axis A1 together with the contactor body 331 in accordance with the movement of the contactor 33 (rotation about the hook piece 333 as a fulcrum).

[0105] As shown in FIGS. 4 and 9, the card 34 is provided on the side of the second end E2 of the contactor 33 in a top view. In the present embodiment, the card 34 is fixed to the second end E2 (right end) of the contactor 33. More specifically, the card 34 is fixed to the protrusion 334 of the contactor 33. The card 34 is fixed to the protrusion 334 of the contactor 33, for example, by press-fitting.

[0106] The card 34 is a molded body of a synthetic resin having electrical insulation. The card 34 moves up and down along the first axis A1 in accordance with the movement of the contactor 33. Since the card 34 is on the side opposite to the contactor body 331 with respect to the fulcrum (hook piece 333) of the contactor 33, the moving direction is opposite to that of the contactor body 331. That is, when the contactor body 331 moves upward, the card 34 moves downward, and when the contactor body 331 moves downward, the card 34 moves upward.

[0107] As shown in FIG. 9, the card 34 includes a card wall portion 341, a cylindrical portion 342, and a protruding portion 343.

[0108] The card wall portion 341 is in the shape of a rectangular plate. The card wall portion 341 extends along the first axis A1. Also, the card wall portion 341 extends along the third axis A3.

[0109] The cylindrical portion 342 is in the shape of a square cylinder and protrudes leftward from the first surface (left surface) of the card wall portion 341. By inserting the protruding portion 334 into the inside of the cylindrical portion 342, the card 34 is fixed to the contact pole 33. The cylindrical portion 342 is fixed to the protruding portion 334 by, for example, press-fitting.

[0110] The protruding portion 343 protrudes rightward from the second surface (right surface) of the card wall portion 341. That is, the protruding portion 343 is on the side opposite to the portion (cylindrical portion 342) fixed to the contact pole 33 in the card 34 with respect to the card wall portion 341. At the first axis A1, the position where the protruding portion 343 protrudes from the card wall portion 341 is different from the position where the cylindrical portion 342 protrudes from the card wall portion 341. More specifically, the protruding portion 343 protrudes from a position lower than the position where the cylindrical portion 342 protrudes in the card wall portion 341. The protruding portion 343 is in a stepped shape with a step in a side view seen from the right side. A dome-shaped protrusion 344 that protrudes upward is provided on the upper surface of the protruding portion 343.

[0111] (2.3) First Block As shown in FIGS. 3 and 10, the first block 4 includes a first holding base 41, a first conductive member 42, a first fixed contact member 43, and an auxiliary member 44.

[0112] The first holding base 41 is in the shape of a rectangular box with an open right surface. As shown in FIGS. 10 and 11, the first holding base 41 includes a left wall 45, a front wall 46, a rear wall 47, a lower wall 48, an upper wall 49, and an auxiliary wall 40. The left wall 45, the front wall 46, the rear wall 47, the lower wall 48, the upper wall 49, and the auxiliary wall 40 are integrally formed as a molded body of a synthetic resin having electrical insulation properties.

[0113] An engagement hole 411 is formed at the right end of the lower wall 48. A recess 412 recessed leftward along the second axis A2 is formed at the upper end of the right side surface of the front wall 46. A recess 413 recessed leftward along the second axis A2 is formed at the upper end of the right side surface of the rear wall 47. A holding groove 414 extending along the second axis A2 is formed at the front end portion of the lower surface of the upper wall 49.

[0114] The front end portion and the rear end portion of the protruding plate portion 624 of the upper flange portion 62 of the bobbin 22 are respectively inserted into the recess 412 of the front wall 46 and the recess 413 of the rear wall 47. The holding protrusion 625 of the upper flange portion 62 of the bobbin 22 is inserted into the holding groove 414 of the upper wall 49. The engaging protrusion 638 of the lower flange portion 63 of the bobbin 22 is engaged with the engaging hole 411 of the lower wall 48. Thereby, the first block 4 is coupled to the main body block 10. In a state where the first block 4 is coupled to the main body block 10, the left wall 45 of the first holding base 41 faces the left side surface of the coil 21 and covers the coil 21 from the left side (see FIG. 2).

[0115] A protruding wall portion 415 protruding upward along the first axis A1 is provided on the upper surface of the upper wall 49. The protruding wall portion 415 extends back and forth along the third axis A3.

[0116] As shown in FIG. 11, a holding recess 416 recessed rightward is formed at the lower end portion of the left surface of the left wall 45. A holding recess 417 recessed rightward is formed along the first axis A1 on the left surface of the rear wall 47.

[0117] The auxiliary wall 40 protrudes upward from the upper end of the front wall 46. A holding groove 418 extending along the first axis A1 is formed on the left surface of the first holding base 41 from the auxiliary wall 40 to the upper side portion of the front wall 46. The holding groove 418 is used to hold the auxiliary member 44.

[0118] As shown in FIG. 10, the first conductive member 42 includes a leg piece 421, a central piece 422, a first fixing piece 423, a second fixing piece 424, and a holding piece 425. The first conductive member 42 has two leg pieces 421. The two leg pieces 421, the central piece 422, the first fixing piece 423, the second fixing piece 424, and the holding piece 425 are integrally formed of a conductive metal material.

[0119] The leg piece 421 is plate-shaped and extends along the first axis A1. The two leg pieces 421 are arranged along the third axis A3. The leg piece 421 is a terminal connected to an external electrical device. As shown in FIG. 1, the leg piece 421 protrudes downward from the case 9.

[0120] The central piece 422 is plate-shaped and extends upward from the upper end of the leg piece 421. The right surface of the central piece 422 faces the left surface of the left wall 45 of the first holding base 41.

[0121] The first fixing piece 423 is plate-shaped and extends rightward along the second axis A2 from the lower end of the central piece 422. The first fixing piece 423 extends from a portion between the two leg pieces 421 at the lower end of the central piece 422.

[0122] The second fixing piece 424 is plate-shaped and extends rightward along the second axis A2 from the rear edge of the central piece 422. The second fixing piece 424 extends from the center on the first axis A1 at the rear edge of the central piece 422.

[0123] The first fixing piece 423 is inserted into the holding recess 416 of the first holding base 41 from the left. The second fixing piece 424 is inserted into the holding recess 417 of the first holding base 41 from the left. Thereby, the first conductive member 42 is held by the first holding base 41.

[0124] Between the first conductive member 42 and the coil 21, the left wall 45 and the protruding wall portion 415 of the first holding base 41 are interposed. Therefore, the first holding base 41 is disposed between the coil 21 and the first conductive member 42 and functions as an insulating member 7 that insulates between the coil 21 and the first conductive member 42.

[0125] The holding piece 425 is plate-shaped with its thickness axis along the first axis A1. The holding piece 425 extends rightward from the upper end of the central piece 422. The holding piece 425 is located above the upper wall 49 of the first holding base 41. The holding piece 425 has a through hole 426 at its center.

[0126] The first conductive member 42 has a through hole 427 at the connecting portion between the central piece 422 and the holding piece 425. Therefore, the current flowing through the holding piece 425 includes not only the component along the second axis A2 but also the component along the third axis A3. The current component along the third axis A3 applies a Lorentz force in a direction intersecting the first axis A1 to the arc that may be generated along the first axis A1 between the first movable contact M1 and the first fixed contact F1, promoting the arc extinction.

[0127] As shown in FIG. 10, the first fixed contact member 43 includes a head 431 and a body 432, similar to the first movable contact member 32.

[0128] The shape of the head 431 is frustum-shaped. The axis of the head 431 is along the first axis A1. The upper surface of the head 431 functions as the first fixed contact F1. Among the first fixed contact member 43, the upper surface that functions as the first fixed contact F1 is formed of, for example, a silver alloy (AgNi or AgSnO2). Among the first fixed contact member 43, the parts other than the first fixed contact F1 are formed of a copper alloy such as tough pitch copper. Among the first fixed contact member 43, the surface (upper surface) that functions as the first fixed contact F1 is spherical. Note that the surface (upper surface) that functions as the first fixed contact F1 among the first fixed contact member 43 may be planar or dome-shaped.

[0129] The body 432 protrudes from the lower end of the head 431. The body 432 is inserted into the through hole 426 of the holding piece 425 of the first conductive member 42. The first fixed contact member 43 is fixed to the first conductive member 42 by caulking with the body 432 passed through the through hole 426 of the holding piece 425. Thereby, the first fixed contact member 43 is electrically connected to the first conductive member 42.

[0130] Note that the first fixed contact point F1 may be integrally formed with the first conductive member 42. For example, a part of the metal plate constituting the first conductive member 42 may be projected upward, and the tip of the projected part may be used as the first fixed contact point F1.

[0131] As shown in FIGS. 2, 14A, and 14B, with the first block 4 fixed to the main body block 10, the first fixed contact point F1 faces the first movable contact point M1 along the first axis A1. As the movable piece 38 of the first movable spring 31 moves up and down, the first movable contact point M1 makes contact with and separates from the first fixed contact point F1. Further, a protruding wall portion 415 is interposed between the first fixed contact point F1 and the iron core 23 (magnetic pole portion 231).

[0132] As shown in FIG. 10, the auxiliary member 44 includes a side piece 441 and an upper piece 442. The side piece 441 and the upper piece 442 are integrally formed of a conductive metal material.

[0133] The side piece 441 is plate-shaped and extends along the first axis A1. The side piece 441 has a recess 443 recessed leftward along the second axis A2 on its right side surface. The recess 443 positions the auxiliary member 44 with respect to the first holding base 41 on the first axis A1.

[0134] The upper piece 442 is plate-shaped and extends rearward along the third axis A3 from the upper end of the side piece 441. A protrusion 444 that protrudes downward more than other portions of the upper piece 442 is provided on the lower surface of the upper piece 442. The protrusion 444 can be formed, for example, by extruding the portion of the upper surface of the upper piece 442 corresponding to the protrusion 444 downward from above. The lower surface of the protrusion 444 faces the upper surface of the body portion 322 of the first movable contact member 32.

[0135] Since the upper piece 442 of the auxiliary member 44 is above the first movable contact member 32, even if the first movable spring 31 vibrates when the first movable contact point M1 separates from the first fixed contact point F1 and the first movable spring 31 moves upward, excessive vibration of the first movable spring 31 is suppressed.

[0136] (2.4) Second Block As shown in FIGS. 3 and 12, the second block 5 includes a second conductive member 51, a second movable spring 52, a second movable contact member 53, a third conductive member 54, a second fixed contact member 55, and a second holding base 56.

[0137] As shown in FIG. 12, the second conductive member 51 includes a leg piece 511, a central piece 512, and a fixing piece 513. The leg piece 511, the central piece 512, and the fixing piece 513 are integrally formed of a conductive metal material.

[0138] The leg piece 511 is plate-shaped and extends along the first axis A1. The leg piece 511 is a terminal connected to an external electrical device. As shown in FIG. 1, the leg piece 511 is exposed downward from the case 9.

[0139] The central piece 512 is L-shaped in side view and includes a horizontal plate portion 514 extending forward from the upper end of the leg piece 511 and a vertical plate portion 515 extending upward from the front end of the horizontal plate portion 514. The width of the vertical plate portion 515 (dimension along the second axis A2) is larger than the width of the horizontal plate portion 514. Two protrusions 516 protruding leftward along the second axis A2 are formed on the left side surface of the vertical plate portion 515. A recess 517 recessed rightward is formed between the two protrusions 516.

[0140] The fixing piece 513 is plate-shaped and extends upward from the upper end of the vertical plate portion 515 of the central piece 512. The fixing piece 513 has two fixing protrusions 518 for fixing the second movable spring 52 at the upper end portion of its front surface. The fixing protrusions 518 can be formed, for example, by pushing out the portion of the rear surface of the fixing piece 513 corresponding to the fixing protrusions 518 from the rear side forward.

[0141] As shown in FIG. 12, the second movable spring 52 includes a fixing piece 521, a spring piece 522, a rising piece 523, and a holding piece 524. The fixing piece 521, the spring piece 522, the rising piece 523, and the holding piece 524 are integrally formed of a conductive metal material.

[0142] The fixing piece 521 is plate-shaped and extends along the first axis A1. The fixing piece 521 is the part fixed to the second conductive member 51. The fixing piece 521 has two fixing holes 525 into which two fixing protrusions 518 of the second conductive member 51 are respectively inserted. By inserting the two fixing protrusions 518 into the two fixing holes 525 and crushing the tips of the fixing protrusions 518, the second movable spring 52 is fixed to the second conductive member 51.

[0143] The spring piece 522 is plate-shaped and extends obliquely upward backward from the upper end of the fixing piece 521. The spring piece 522 has flexibility. The spring piece 522 is inclined with respect to the normal direction of the fixing piece 521.

[0144] The rising piece 523 is plate-shaped and extends upward from the rear end of the spring piece 522. The second movable spring 52 may not include the rising piece 523. However, by providing the second movable spring 52 with the rising piece 523, the contact pressure between the second movable contact M2 and the second fixed contact F2 in a state where the second movable contact M2 is in contact with the second fixed contact F2 can be improved.

[0145] The holding piece 524 is plate-shaped and extends obliquely upward backward from the upper end of the rising piece 523. The holding piece 524 has a through hole 526.

[0146] The holding piece 524 is inclined with respect to the normal direction of the fixing piece 521. The inclination angle of the holding piece 524 is substantially the same as the inclination angle of the spring piece 522. The holding piece 524 is movable up and down according to the deflection of the spring piece 522.

[0147] The second movable contact member 53 is formed in a substantially cylindrical shape by a contact material mainly composed of, for example, silver. The lower surface of the second movable contact member 53 functions as the second movable contact M2. Among the second movable contact member 53, the lower surface that functions as the second movable contact M2 is spherical. Note that, among the second movable contact member 53, the surface (lower surface) that functions as the second movable contact M2 may be planar or dome-shaped. The second movable contact member 53 is inserted into the through hole 526 of the holding piece 524 of the second movable spring 52. The second movable contact member 53 is fixed to the second movable spring 52 by caulking while being passed through the through hole 526 of the holding piece 524. Thereby, the second movable contact member 53 is electrically connected to the second movable spring 52.

[0148] Note that the second movable contact M2 may be integrally formed with the second movable spring 52. For example, a part of the metal plate constituting the second movable spring 52 may be projected downward, and the tip of the projected part may be used as the second movable contact M2.

[0149] As shown in FIG. 12, the third conductive member 54 includes a leg piece 541, a central piece 542, and a holding piece 543. The leg piece 541, the central piece 542, and the holding piece 543 are integrally formed of a conductive metal material.

[0150] The leg piece 541 is plate-shaped and extends along the first axis A1. The leg piece 541 is a terminal connected to an external electrical device. As shown in FIG. 1, the leg piece 541 is exposed downward from the case 9.

[0151] The central piece 542 is plate-shaped and extends upward from the upper end of the leg piece 541. Two protrusions 544 protruding leftward along the second axis A2 are formed on the left side surface of the central piece 542. A recess 545 recessed rightward is formed between the two protrusions 544.

[0152] The holding piece 543 is plate-shaped and extends obliquely upward rearward from the upper end of the central piece 542. The holding piece 543 has a through hole 546.

[0153] The holding piece 543 is inclined with respect to the normal direction of the central piece 542. The inclination angle (acute angle) of the holding piece 543 is, for example, 45 degrees or less, may be 30 degrees or less, and may be 15 degrees or less. The inclination angle (acute angle) of the holding piece 543 may be 0 degrees or more. From the viewpoint of preventing the displacement (sliding) of the second movable contact M2 with respect to the second fixed contact F2 when the second movable contact M2 contacts the second fixed contact F2, it is preferable that the holding piece 543 is inclined with respect to the normal direction of the central piece 542.

[0154] The second fixed contact member 55 is formed in a substantially cylindrical shape by a contact material mainly composed of, for example, silver. The upper surface of the second fixed contact member 55 functions as the second fixed contact F2. Among the second fixed contact members 55, the upper surface that functions as the second fixed contact F2 is spherical. Note that, among the second fixed contact members 55, the surface (upper surface) that functions as the second fixed contact F2 may be planar or dome-shaped. The second fixed contact member 55 is inserted into the through-hole 546 of the holding piece 543 of the third conductive member 54. The second fixed contact member 55 is fixed to the third conductive member 54 by caulking while being passed through the through-hole 546 of the holding piece 543. Thereby, the second fixed contact member 55 is electrically connected to the third conductive member 54.

[0155] Note that the second fixed contact F2 may be integrally formed with the third conductive member 54. For example, a part of the metal plate constituting the third conductive member 54 may be protruded upward, and the tip of the protruded part may be used as the second movable contact M2.

[0156] As shown in FIGS. 12 and 13, the second holding base 56 includes a holding base body 561 and a holding base wall portion 562.

[0157] The holding base body 561 is formed in a substantially rectangular parallelepiped shape. The holding base body 561 is in a box shape with an open left side. A first holding groove 563 is formed at the front end of the right side of the holding base body 561. A second holding groove 564 is formed at the rear end of the right side of the holding base body 561.

[0158] The first holding groove 563 is a portion used to hold the second conductive member 51. The first holding groove 563 has a first groove portion extending along the first axis A1, a second groove portion extending rearward from the lower end of the first groove portion, and a third groove portion extending downward from the rear end of the second groove portion. In the first groove portion, the vertical plate portion 515 of the central piece 512 of the second conductive member 51 is fitted. In the second groove portion, the horizontal plate portion 514 of the central piece 512 is fitted. In the third groove portion, the upper end portion of the leg piece 511 is fitted. The bottom of the first groove portion has a stepped protrusion corresponding to the recess 517 on the left side surface of the second conductive member 51, and the recess 517 of the second conductive member 51 is fitted into this protrusion.

[0159] The second holding groove 564 is a portion used to hold the third conductive member 54. The second holding groove 564 extends along the first axis A1. The bottom of the second holding groove 564 has a stepped protrusion corresponding to the recess 545 on the left side surface of the third conductive member 54, and the recess 545 of the third conductive member 54 is fitted into this protrusion.

[0160] As shown in FIGS. 3, 15A, and 15B, with the second conductive member 51, the second movable spring 52, and the third conductive member 54 held on the second holding base 56, the second movable contact M2 and the second fixed contact F2 face each other. In this embodiment, the second movable contact M2 is located on the upper side and the second fixed contact F2 is located on the lower side. By the holding piece 524 of the second movable spring 52 moving up and down, the second movable contact M2 makes contact with and separates from the second fixed contact F2.

[0161] As shown in FIG. 13, a pair of first fitting recesses 565 recessed to the right are formed at the front end and the rear end of the lower end of the left surface of the holding base main body 561. A pair of first protrusions 246 of the insulating member 24 of the electromagnet block 2 are respectively inserted into the pair of first fitting recesses 565. An engaging hole 566 for engaging the claw 249 of the first protrusion 246 is formed in the lower wall constituting the lower surface of the first fitting recess 565.

[0162] The holding table wall portion 562 extends upward along the first axis A1 from the left end on the upper surface of the holding table main body 561. The holding table wall portion 562 extends along the third axis A3. At the center of the holding table wall portion 562 along the third axis A3, a recess 567 that is recessed downward from the upper end is formed. The recess 567 is formed here along the first axis A1 over substantially the entire length of the holding table wall portion 562.

[0163] At the front end portion and the rear end portion of the left surface of the holding table wall portion 562, a pair of second fitting recesses 568 that are recessed rightward are formed. The second fitting recesses 568 are L-shaped (or reverse L-shaped) in a side view seen from the left side. A pair of second protrusions 247 of the insulating member 24 of the electromagnet block 2 are respectively inserted into the pair of second fitting recesses 568.

[0164] At the upper end portion of the left surface of the holding table wall portion 562, ribs 569 that protrude leftward are respectively provided along the first axis A1 at both ends (front end and rear end) along the third axis A3.

[0165] (2.5) Relay main body The relay main body 1 is configured by coupling an electromagnet block 2, a movable block 3, a first block 4, and a second block 5.

[0166] For example, as shown in FIG. 4, with respect to the electromagnet block 2, the movable block 3 is positioned to the right. Then, the movable block 3 is moved leftward along the second axis A2, and two fixing protrusions 253 of the first armature 251 are respectively inserted into two fixing holes 311 of the fixing piece 36 of the first movable spring 31, and the tips of the fixing protrusions 253 are crushed. Thereby, the movable block 3 is fixed to the electromagnet block 2. Thereby, a main body block 10 in which the electromagnet block 2 and the movable block 3 are coupled is configured (see FIG. 3).

[0167] Also, as shown in FIG. 3, the first block 4 is positioned to the left of the main body block 10. Then, the first block 4 is moved rightward along the second axis A2, the protruding plate portion 624 of the upper flange portion 62 of the bobbin 22 is inserted into the recesses 412 and 413 of the first holding base 41, the holding protrusion 625 of the upper flange portion 62 is inserted into the holding groove 414 of the first holding base 41, and the engaging protrusion 638 (see FIG. 7) of the lower flange portion 63 is engaged with the engaging hole 411 of the first holding base 41. Thereby, the first block 4 is fixed to the main body block 10 (see FIG. 2). Note that the bobbin 22 may be further fixed to the first holding base 41 by adhesion or the like.

[0168] Also, as shown in FIG. 3, the second block 5 is positioned to the right of the main body block 10. Then, the second block 5 is moved leftward along the second axis A2, the pair of first protrusions 246 of the insulating member 24 are inserted into the pair of first fitting recesses 565 of the second holding base 56 and the claw 249 is engaged with the engaging hole 566, and the pair of second protrusions 247 of the insulating member 24 are inserted (press-fitted here) into the pair of second fitting recesses 568 of the second holding base 56. Thereby, the second block 5 is fixed to the main body block 10 (see FIG. 2). Note that the insulating member 24 may be further fixed to the second holding base 56 by adhesion or the like.

[0169] As described above, the electromagnetic relay 100 includes a first terminal block 81 (bobbin 22 and insulating member 24) that holds the bobbin 22 and retains the first movable spring 31, a second terminal block 82 (second holding base 56) that holds the second fixed contact F2 and the second movable spring 52, and a third terminal block 83 (first holding base 41) that holds the first fixed contact F1. The second terminal block 82 is separate from the first terminal block 81 and is fixed to the first terminal block 81. The third terminal block 83 is separate from the first terminal block 81 and the second terminal block 82 and is fixed to the first terminal block 81. In the electromagnetic relay 100 of the present embodiment, the first terminal block 81, the second terminal block 82, and the third terminal block 83 are separate from each other. Therefore, adjustment of components held by one terminal block (for example, the second terminal block 82), such as component alignment and spring force adjustment, can be separated from adjustment of components held by other terminal blocks (for example, the first terminal block 81 and the third terminal block 83). This makes it possible to simplify the manufacturing process of the electromagnetic relay 100. Also, by simply assembling the second terminal block 82 that holds the second contact device to the first terminal block 81, it is possible to add the second contact device.

[0170] Further, in the electromagnetic relay 100 of the present embodiment, the second terminal block 82 is assembled to the first terminal block 81 along the second axis A2. The third terminal block 83 is assembled to the first terminal block 81 along the second axis A2. Thus, in the electromagnetic relay 100 of the present embodiment, the second terminal block 82 and the third terminal block 83 are assembled to the first terminal block 81 along the same axis (second axis A2). This makes it possible to simplify the manufacturing process of the electromagnetic relay 100.

[0171] Also, one of the terminal blocks between the first terminal block 81 and the second terminal block 82 (here, the insulating member 24 included in the first terminal block 81) is press-fitted into the remaining terminal block between the first terminal block 81 and the second terminal block 82 (here, the second holding base 56 which is the second terminal block 82). This makes it possible to facilitate assembly in the manufacturing process of the electromagnetic relay 100.

[0172] As shown in FIG. 2, in the relay body 1 of the electromagnetic relay 100, the card wall portion 341 is disposed between the second end E2 (right end) of the terminal 33 and the second movable spring 52. Further, in the relay body 1, the holding base wall portion 562 is disposed between the terminal body 331 and the second movable spring 52. That is, for example, as shown in FIG. 17, the card wall portion 341 and the holding base wall portion 562 are arranged so as to block the shortest distance between the conductive component (hereinafter also referred to as "first conductive component") electrically connected to the first contact device and the conductive component (hereinafter also referred to as "second conductive component") electrically connected to the second contact device. Thereby, the insulation distance between the first conductive component and the second conductive component can be increased. In the relay body 1 of the electromagnetic relay 100 of the present embodiment, the first conductive component includes the first movable spring 31, the terminal 33, and the armature 25. Further, the second conductive component includes the second movable spring 52 and the third conductive member 54.

[0173] Further, in the relay body 1 of the electromagnetic relay 100 of the present embodiment, the second movable spring 52 is provided separately from the first movable spring 31 and the terminal 33. Further, the second movable spring 52 is moved by the card 34. Therefore, it is possible to adjust the characteristics of the second contact device (for example, the magnitude of overtravel) without affecting the characteristics of the first contact device (for example, the magnitude of overtravel).

[0174] Further, in the relay body 1 of the electromagnetic relay 100 of the present embodiment, as shown in FIG. 2, in a top view, the first fixed contact F1 and the second fixed contact F2 are on opposite sides of each other across the axis of the coil 21 in the direction connecting the first end E1 (left end) and the second end E2 (right end) of the terminal 33. Therefore, it is possible to increase the distance between the first fixed contact F1 and the second fixed contact F2. Thereby, it is possible to reduce the possibility that the arc that may occur at the first fixed contact F1 affects the second fixed contact F2 or the arc that may occur at the second fixed contact F2 affects the first fixed contact F1.

[0175] Further, in the relay body 1 of the electromagnetic relay 100 of the present embodiment, on the second axis A2, between the first fixed contact F1 and the second fixed contact F2, the protruding wall portion 415 of the first holding base 41, the third wall portion 66 of the bobbin 22, and the insulating member 24 are located. Thereby, it is possible to reduce the possibility that an arc generated at the first fixed contact F1 affects the second fixed contact F2 or an arc generated at the second fixed contact F2 affects the first fixed contact F1.

[0176] Next, the operation of the relay body 1 (operation of the electromagnetic relay 100) will be described.

[0177] In the relay body 1, in a state where no voltage is applied between the two coil terminals 26 and the coil 21 is not energized (hereinafter also referred to as "non-energized state"), as shown in FIGS. 2 and 14A, due to the spring force of the first movable spring 31, the first movable contact M1 is separated from the first fixed contact F1. Therefore, the electric circuit (hereinafter also referred to as "first electric circuit") between the leg piece 421 of the first conductive member 42 and the leg piece 35 of the first movable spring 31 is interrupted.

[0178] Also, in the non-energized state, as shown in FIGS. 2 and 15A, the second movable contact M2 is in contact with the second fixed contact F2 by the spring force of the second movable spring 52. Therefore, an electric circuit (hereinafter also referred to as "second electric circuit") is formed between the leg piece 511 of the second conductive member 51 and the leg piece 541 of the third conductive member 54. As shown in FIGS. 2 and 15A, the protruding portion 343 of the card 34 of the main body block 10 is located below the second movable spring 52 of the second block 5.

[0179] In the relay body 1, when a voltage is applied between the two coil terminals 26 to energize the coil 21 (hereinafter also referred to as "when energized"), the armature 33 is attracted downward along the first axis A1 toward the magnetic pole portion 231 of the iron core 23 by the attractive force generated between the armature 33 and the magnetic pole portion 231 of the iron core 23. As a result, the armature 33 rotates (counterclockwise in a front view) with the hook piece 333 as a fulcrum, and the lower surface of the armature 33 comes into contact with the upper surface of the magnetic pole portion 231 of the iron core 23. When energized, a magnetic circuit through which the magnetic flux generated by the coil 21 passes is formed by the iron core 23, the yoke 25, and the armature 33.

[0180] When energized, due to the rotation of the armature 33, the first movable contact M1 moves downward together with the armature 33. As a result, when energized, as shown in FIG. 14B, the first movable contact M1 comes into contact with the first fixed contact F1. Therefore, the first electric circuit is formed.

[0181] Also, when energized, due to the rotation of the armature 33, the card 34 moves upward, and the second movable spring 52 is pushed upward by the protruding portion 343. As a result, as shown in FIG. 15B, the second movable contact M2 is separated from the second fixed contact F2. Therefore, the second electric circuit is interrupted.

[0182] As described above, in the electromagnetic relay 100 of the present embodiment, the card 34 includes a lower pressing portion (protruding portion 343) located below the second movable spring 52 (see FIGS. 15A and 15B). The lower pressing portion pushes the second movable spring 52 upward to separate the second movable contact M2 from the second fixed contact F2. Further, the card 34 has a base portion (card wall portion 341, cylindrical portion 342) and a protruding portion 343 protruding from the base portion toward the contact device (second contact device) including the second fixed contact F2 and the second movable contact M2. The card 34 moves the second movable spring 52 with the protruding portion 343. By providing the card 34 with the protruding portion 343 that moves the second movable spring 52, it is possible to increase the insulation distance between the first conductive component and the second conductive component.

[0183] In the relay body 1, when the energization of the coil 21 is stopped, the attractive force between the iron core 23 and the armature 33 disappears. Therefore, in the relay body 1, due to the spring force of the first movable spring 31, the armature 33 rotates (clockwise in the front view) with the hook piece 333 as the fulcrum, and the armature 33 moves away from the iron core 23. Due to the rotation of the armature 33, the first movable contact M1 moves upward together with the armature 33 and separates from the first fixed contact F1. Thereby, the first circuit is cut off. Also, due to the rotation of the armature 33, the card 34 moves downward and separates from the second movable spring 52. The second movable contact M2 moves downward due to the spring force of the second movable spring 52 and contacts the first fixed contact F1. Thereby, the second circuit is formed.

[0184] Thus, in the electromagnetic relay 100 of this embodiment, the first movable spring 31 is movable between a first closed position and a first open position in response to the switching between excitation and non-excitation of the coil 21. The first closed position is the position of the first movable spring 31 where the first movable contact M1 contacts the first fixed contact F1. The first open position is the position of the first movable spring 31 where the first movable contact M1 separates from the first fixed contact F1.

[0185] Also, in the electromagnetic relay 100 of this embodiment, the second movable spring 52 is movable between a second closed position and a second open position in response to the switching between excitation and non-excitation of the coil 21. The second closed position is the position of the second movable spring 52 where the second movable contact M2 contacts the second fixed contact F2. The second open position is the position of the second movable spring 52 where the second movable contact M2 separates from the second fixed contact F2. In the electromagnetic relay 100 of this embodiment, in response to the switching between excitation and non-excitation of the coil 21, the card 34 makes the second movable contact M2 contact and separate from the second fixed contact F2.

[0186] As shown in FIGS. 14A and 14B, in the relay body 1 (electromagnetic relay 100) of the present embodiment, the first movable contact M1 moves along the first contact separation axis X1 and makes contact with and separates from the first fixed contact F1. Further, as shown in FIGS. 15A and 15B, the second movable contact M2 moves along the second contact separation axis X2 and makes contact with and separates from the second fixed contact F2. And the second contact separation axis X2 is along the first contact separation axis X1. In the present disclosure, "the second contact separation axis X2 is along the first contact separation axis X1" means that in a side view, the intersection angle (acute angle) between the second contact separation axis X2 and the first contact separation axis X1 is within a predetermined angle range. The intersection angle may be, for example, 45 degrees or less, may be 30 degrees or less, or may be 15 degrees or less. In the electromagnetic relay 100 of the present embodiment, since the second contact separation axis X2 is along the first contact separation axis X1, when cleaning the two contact devices (the first contact device and the second contact device) by air cleaning or the like, it is possible to clean from the same side (for example, the upper side), and the cleaning of the two contact devices becomes easy. Further, in the electromagnetic relay 100, since the second contact separation axis X2 is along the first contact separation axis X1, the direction that is most vulnerable to vibration (or impact) in the two contact devices is common, and it becomes easy to take countermeasures against vibration (or impact). Specifically, in the electromagnetic relay 100, the direction that is most vulnerable to vibration in the two contact devices is the direction along the first axis A1 along which the first contact separation axis X1 and the second contact separation axis X2 commonly extend. The electromagnetic relay 100 is relatively strong against vibrations along other directions (the direction along the second axis A2, the direction along the third axis A3). Therefore, in the electromagnetic relay 100, by only taking countermeasures against vibrations along the first axis A1 (for example, providing a buffer material on the upper wall 91 of the case 9), it is possible to take countermeasures against vibrations.

[0187] (2.6) Case As shown in FIGS. 1 and 2, the case 9 houses the relay body 1. Therefore, the case 9 houses the coil 21, the iron core 23, the pole piece 33, the first fixed contact F1, the first movable spring 31, the second fixed contact F2, the second movable spring 52, and the card 34. The case 9 also houses the first terminal block 81 (bobbin 22 and insulating member 24), the second terminal block 82 (second holding base 56), and the third terminal block 83 (first holding base 41). The case 9 is, for example, a molded body of synthetic resin having electrical insulation properties and is insulating.

[0188] As shown in FIGS. 1, 2, and 16, the case 9 includes a case body 90. The case body 90 constitutes the outer contour of the case 9. The case body 90 is in the shape of a rectangular box with an open bottom surface. The case body 90 includes an upper wall 91, a front wall 92, a rear wall 93, a right wall 94, and a left wall 95.

[0189] As shown in FIG. 16, the case 9 further includes a first ridge portion 961 and two first connection portions 962 inside the case body 90. The first ridge portion 961 is plate-shaped and extends along the first axis A1. The first ridge portion 961 extends along the second axis A2. The first ridge portion 961 faces the front wall 92 with a gap therebetween at the third axis A3. The two first connection portions 962 connect the two end portions of the first ridge portion 961 at the second axis A2 and the rear surface of the front wall 92, respectively. A first recess 96 with an open bottom surface is formed by the front wall 92, the first ridge portion 961, and the two first connection portions 962 of the case body 90.

[0190] The case 9 further includes a second ridge portion 971 and two second connection portions 972 inside the case body 90 (see FIG. 17). The second ridge portion 971 is plate-shaped and extends along the first axis A1. The second ridge portion 971 extends along the second axis A2. The second ridge portion 971 faces the rear wall 93 with a gap therebetween at the third axis A3. The two second connection portions 972 connect the two end portions of the second ridge portion 971 at the second axis A2 and the front surface of the rear wall 93, respectively. A second recess 97 with an open bottom surface is formed by the rear wall 93, the second ridge portion 971, and the two second connection portions 972 of the case body 90.

[0191] As shown in FIG. 17, the first wall portion 64 (more specifically, the protruding rib 642) of the upper flange portion 62 of the bobbin 22 is inserted into the first recess 96. Therefore, the first ridge portion 961 faces the first wall portion 64 (more specifically, the protruding rib 642) at the third axis A3. Also, the first connection portion 962 is inserted into the first recess 643. The two first connection portions 962 are inserted into the two first recesses 643, respectively.

[0192] As shown in FIG. 17, in the second recess 97, the second wall portion 65 (more specifically, the protruding rib 652) of the upper flange portion 62 of the bobbin 22 is inserted. Therefore, the second protruding strip portion 971 faces the second wall portion 65 (more specifically, the protruding rib 652) on the third axis A3. Further, the second connecting portion 972 is inserted into the second recess 653. The two second connecting portions 972 are respectively inserted into the two second recesses 653.

[0193] As shown in FIG. 16, the case 9 further includes a case wall portion 98 inside the case main body 90. The case wall portion 98 is plate-shaped and extends downward along the first axis A1 from the lower surface of the upper wall 91 of the case main body 90. The case wall portion 98 extends along the third axis A3 and divides the lower surface of the upper wall 91 of the case main body 90 into a left side and a right side. At the lower end of the case wall portion 98, a recess 981 that is recessed upward is formed at the center on the third axis A3.

[0194] As shown in FIG. 17, in the electromagnetic relay 100, the case wall portion 98 is disposed between the second end E2 (right end) of the terminal 33 and the second movable spring 52. Thereby, in the electromagnetic relay 100, it becomes possible to interpose the case wall portion 98 between the first conductive component and the second conductive component, and it becomes possible to increase the insulation distance between the first conductive component and the second conductive component. Further, since the electromagnetic relay 100 includes both the card wall portion 341 and the case wall portion 98, it becomes possible to further increase the insulation distance between the first conductive component and the second conductive component. As shown in FIG. 17, on the second axis A2, the card wall portion 341 and the case wall portion 98 overlap each other. Further, as shown in FIG. 17, between the front wall 92 and the rear wall 93 of the case main body 90, in a side view, at least one of the card wall portion 341 and the case wall portion 98 exists over the entire length on the third axis A3. Thereby, it becomes possible to further increase the insulation distance between the first conductive component and the second conductive component.

[0195] Also, as shown in FIGS. 17 and 18, the case wall portion 98 is adjacent to the card wall portion 341. And the case wall portion 98 is located between the card wall portion 341 and the second movable spring 52 on the second axis A2. Therefore, the distance between the case wall portion 98 and the second movable spring 52 is shorter than the distance between the card wall portion 341 and the second movable spring 52. Since the case wall portion 98 is between the card wall portion 341 and the second movable spring 52, even if the card 34 is about to come off from the protrusion 334 of the contact 33, the card wall portion 341 contacts the case wall portion 98 to prevent the card 34 from falling off from the contact 33. From the viewpoint of preventing the card 34 from falling off, the length of the cylindrical portion 342 of the card 34 (dimension along the second axis A2) and the length of the protrusion 334 of the contact 33 may be larger than the distance between the card wall portion 341 and the case wall portion 98.

[0196] Thus, the electromagnetic relay 100 of the present embodiment includes the insulating partition 71. The insulating partition 71 includes at least one of the holding base wall portion 562, the card wall portion 341, and the case wall portion 98. The insulating partition 71 is disposed between the armature 25 and the second fixed contact F2. Also, the insulating partition 71 is disposed between the conductive portion of the first movable spring 31 and the second fixed contact F2. The conductive portion of the first movable spring 31 is a portion located between the coil 21 and the second fixed contact F2 in a top view, and includes at least one of, for example, the fixed piece 36 and the spring piece 37. The insulating partition 71 is interposed at a position where the distance between the first conductive component and the second conductive component is the shortest. Thereby, in the electromagnetic relay 100, it is possible to further increase the insulation distance between the first conductive component and the second conductive component.

[0197] As shown in FIGS. 16 to 18, the case 9 further includes guide ribs 99 inside the case body 90. The case 9 includes two guide ribs 99. The guide rib 99 is plate-shaped and extends downward from the lower surface of the upper wall 91 of the case body 90. The lower surface of the guide rib 99 is an inclined surface that slopes from the upper left to the lower right. The right side surface of the guide rib 99 is connected to the left side surface of the case wall portion 98.

[0198] As shown in FIG. 17, the guide rib 99 is formed at a position overlapping with the holding base wall portion 562 of the relay body 1 in a side view. The guide rib 99 prevents the case 9 from being displaced with respect to the second holding base 56 (second terminal block 82) when the case 9 is assembled to the relay body 1. That is, when the case 9 is to be assembled to the relay body 1 in a state where it is disposed relatively on the left side with respect to the relay body 1, the lower surface (inclined surface) of the guide rib 99 contacts the upper surface of the holding base wall portion 562 of the relay body 1. Thereby, the case 9 is guided to move rightward along the second axis A2, and displacement of the case 9 with respect to the second holding base 56 (relay body 1) is prevented. By preventing the displacement of the case 9 with respect to the relay body 1, a situation where the case wall portion 98 contacts the card wall portion 341 when the case 9 is assembled to the relay body 1 is prevented.

[0199] (3) Modification The above-described embodiment is merely one of various embodiments of the present disclosure. The above-described embodiment can be variously modified according to design and the like as long as the object of the present disclosure can be achieved. Hereinafter, modifications of the embodiment will be listed. Hereinafter, the above-described embodiment may also be referred to as a "basic example". The above basic example and the modifications described below can be applied in appropriate combinations.

[0200] (3.1) First Modification The electromagnetic relay 100 of this modification will be described with reference to FIGS. 19A and 19B. For the configurations similar to those of the electromagnetic relay 100 of the basic example, the description may be omitted as appropriate.

[0201] The electromagnetic relay 100 of the basic example has a structure (hereinafter, also referred to as a "lift-off structure") that secures the contact pressure between the second movable contact M2 and the second fixed contact F2 by the spring force of the second movable spring 52. On the other hand, the electromagnetic relay 100 of this modification has a structure (hereinafter, also referred to as a "friction structure") that secures the contact pressure between the second movable contact M2 and the second fixed contact F2 by pressing the second movable spring 52A with the card 34A.

[0202] More specifically, as shown in FIGS. 19A and 19B, the card 34A includes a card wall portion 341A and a protruding portion 343A. The protruding portion 343A is located above the second movable spring 52A. A dome-shaped protrusion 344A that protrudes downward is provided on the lower surface of the protruding portion 343A.

[0203] When not energized, as shown in FIG. 19A, the second movable spring 52A is pushed upward by the protruding portion 343A, so that the second movable contact M2 on the lower surface of the second movable contact member 53A held by the second movable spring 52A contacts the second fixed contact F2 on the upper surface of the second fixed contact member 55A held by the third conductive member 54A. Therefore, the second electric circuit is formed.

[0204] When energized, as shown in FIG. 19B, the protruding portion 343A moves upward together with the card wall portion 341A, and the protruding portion 343A separates from the second movable spring 52A. The second movable contact M2 moves upward by the spring force of the second movable spring 52A, and the second movable contact M2 separates from the second fixed contact F2.

[0205] Thus, in the electromagnetic relay 100 of this modification, the card 34A includes an upper pressing portion (protruding portion 343A) located above the second movable spring 52A, and the upper pressing portion presses the second movable spring 52A downward to bring the second movable contact M2 into contact with the second fixed contact F2.

[0206] Even in the electromagnetic relay 100 of this modification having a friction structure, it is possible to simplify the structure as in the electromagnetic relay 100 of the basic example.

[0207] In addition, in the lift-off structure, since the second movable contact M2 is brought into contact with the second fixed contact F2 by the spring force of the second movable spring 52, there is an advantage that the contact pressure is more likely to be stable than in the friction structure. Also, in the lift-off concept, there is an advantage that the reliability of separation when separating the second movable contact M2 from the second fixed contact F2 is high. On the other hand, in the friction structure, there is an advantage that the reliability of contact when bringing the second movable contact M2 into contact with the second fixed contact F2 is high.

[0208] (3.2) Variant 2 The electromagnetic relay 100B of this variant will be described with reference to Fig. 20. For the configurations similar to those of the electromagnetic relay 100 in the basic example, the description may be omitted as appropriate.

[0209] In the electromagnetic relay 100B of this variant, the first movable contact M1 and the first fixed contact F1 are arranged on the side of the lower flange portion 63B of the bobbin 22B, and it is different from the electromagnetic relay 100 in the basic example in that the vertical relationship between the iron core and the armature is reversed.

[0210] More specifically, in the electromagnetic relay 100B of this variant, the lower flange portion 63B of the bobbin 22B is in the shape of a hollow box. And inside the internal space of the lower flange portion 63B, the first fixed contact F1, the first movable contact M1, the movable piece 38B of the first movable spring 31B, and the armature body 331B of the armature 33B are arranged.

[0211] A coil 21B is wound around the bobbin 22B, and two coil terminals 26B are held on the lower flange portion 63B of the bobbin 22B. The first terminal portion 261B of the coil terminal 26B protrudes upward from the upper wall portion 631B of the lower flange portion 63B, and one end of the coil 21B is connected thereto. The second terminal portion 262B of the coil terminal 26B protrudes downward from the lower wall portion 632B of the lower flange portion 63B.

[0212] The iron core 23B is inserted vertically along the first axis A1 into the main body portion of the bobbin 22B, and thereby is inserted vertically along the first axis A1 into the interior of the coil 21B. The magnetic pole portion 231B of the iron core 23B is exposed in the internal space of the lower flange portion 63B of the bobbin 22B.

[0213] The first armature 251B of the armature 25B extends vertically along the first axis A1 and faces the right side surface of the bobbin 22B. The second armature 252B of the armature 25B protrudes leftward along the second axis A2 from the upper end of the first armature 251B. The second armature 252B is inserted into the upper flange portion 62B of the bobbin 22B and is coupled to the upper end of the iron core 23B.

[0214] On the lower surface of the upper wall portion 631B of the lower flange portion 63B of the bobbin 22B, the holding piece 425B of the first conductive member 42B is fixed. On the lower surface of the holding piece 425B, a first fixed contact member 43B whose lower surface functions as a first fixed contact F1 is held. The leg piece 421B of the first conductive member 42B protrudes downward from the lower flange portion 63B.

[0215] The first movable spring 31B integrally includes a leg piece 35B, a fixed piece 36B, a spring piece 37B, and a movable piece 38B. The first movable spring 31B is, for example, in a T-shape rotated 90 degrees in a front view. The leg piece 35B protrudes downward from the lower flange portion 63B of the bobbin 22B. The fixed piece 36B is fixed to the right surface of the first yoke 251B. The movable piece 38B is connected to the fixed piece 36B via the spring piece 37B and extends obliquely downward to the left from the spring piece 37B.

[0216] The pole piece 33B is fixed to the upper surface of the movable piece 38B of the first movable spring 31B and faces the magnetic pole portion 231B of the iron core 23B along the first axis A1.

[0217] The first movable contact member 32B is fixed to the upper surface of the movable piece 38B of the first movable spring 31B on the side of the first end E1 (left end) of the pole piece 33B. The upper surface of the first movable contact member 32B functions as a first movable contact M1 and faces the first fixed contact F1.

[0218] The card 34B has a card wall portion 341B (base portion) and a protruding portion 343B. The card 34B is provided on the side of the second end E2 (right end) of the pole piece 33B and is fixed to the protruding portion 334B of the pole piece 33B.

[0219] The second movable spring 52B extends along a third axis orthogonal to both the first axis A1 and the second axis A2. On the upper surface of the second movable spring 52B, a second movable contact member 53B whose upper surface functions as a second movable contact M2 is provided.

[0220] The third conductive member 54B is held by the second holding base 56B such that the holding piece 543B faces the second movable contact member 53B at the first axis A1 and is positioned above the second movable spring 52B. A second fixed contact member 55B whose lower surface functions as the second fixed contact F2 is provided on the lower surface of the holding piece 543B. The leg piece 541B of the third conductive member 54B protrudes downward from the second holding base 56B.

[0221] The second holding base 56B holds the second conductive member to which the second movable spring 52B is connected and the third conductive member 54B. The second holding base 56B is fixed to the bobbin 22B.

[0222] In the electromagnetic relay 100B, when the coil 21B is not energized, the first movable contact M1 is separated from the first fixed contact F1 by the spring force of the first movable spring 31B. Also, when not energized, the second movable contact M2 is in contact with the second fixed contact F2 by the spring force (upward force) of the second movable spring 52B.

[0223] In the electromagnetic relay 100B, when the coil 21B is energized via the coil terminal 26B, the armature 33B is attracted to the iron core 23B and moves toward the iron core 23B, and the first movable contact M1 comes into contact with the first fixed contact F1. Also, when energized, the second movable spring 52B is pushed downward by the card 34B, and the second movable contact M2 separates from the second fixed contact F2.

[0224] Thus, the electromagnetic relay 100B of this modified example includes the coil 21B, the bobbin 22B, the iron core 23B, the armature 33B, the first fixed contact F1, the first movable spring 31B, the second fixed contact F2, the second movable spring 52B, and the card 34B.

[0225] A coil 21B is wound around a bobbin 22B. A core 23B is inserted vertically along a first axis A1 inside the coil 21B. A pole piece 33B has a lower surface (the upper surface in FIG. 20) facing the upper surface of the core 23B (the lower surface in FIG. 20). A first movable spring 31B has a first movable contact M1. The first movable contact M1 faces a first fixed contact F1 along the first axis A1 and makes contact with and separates from the first fixed contact F1. A second movable spring 52B has a second movable contact M2. The second movable contact M2 faces a second fixed contact F2 and makes contact with and separates from the second fixed contact F2. A card 34B separates the second movable contact M2 from and brings it into contact with the second fixed contact F2 in accordance with switching between energization and non-energization of the coil 21B.

[0226] The first movable spring 31B is fixed to the upper surface of the pole piece 33B (the lower surface in FIG. 20). The pole piece 33B has a first end E1 and a second end E2 which are both ends in a top view. The first movable contact M1 is provided on the first movable spring 31B on the side of the first end E1 (the left end in FIG. 20) of the pole piece 33B in a top view. The card 34B is provided on the side of the second end E2 (the right end in FIG. 20) of the pole piece 33B in a top view.

[0227] Even in the electromagnetic relay 100B of this modification example, it is possible to simplify the structure.

[0228] Note that the electromagnetic relay 100B of this modification example may be provided with an insulating member similar to the insulating member 24 of the electromagnetic relay 100 of the basic example. Also, the electromagnetic relay 100B of this modification example may be provided with a case similar to the case 9 of the electromagnetic relay 100 of the basic example.

[0229] (3.3) Other modification examples In one modification example, the method of fixing the card 34 to the pole piece 33 is not limited to press-fitting. For example, the card 34 may be fixed to the pole piece 33 by co-molding, or may be fixed to the pole piece 33 by engagement of a claw and a hole.

[0230] In a modified example, the card 34 may separate and connect the second movable contact M2 with respect to the second fixed contact F2 in conjunction with the switching between energization and non-energization of the coil 21 (movement of the switch pole 33), and it does not have to be fixed to the switch pole 33. The card 34 may be arranged, for example, spatially separated from the switch pole 33 and may have a structure that moves by being pushed by the switch pole 33 and pushes the second movable spring 52.

[0231] In a modified example, the card 34 may include both an upper pressing portion and a lower pressing portion. For example, the card 34 may have two protruding portions so as to sandwich the second movable spring 52 from both sides on the first axis A1.

[0232] In a modified example, the fixing method of the second terminal block 82 with respect to the first terminal block 81 and / or the fixing method of the third terminal block 83 with respect to the first terminal block 81 are not limited to press-fitting. For example, they may be fixed by adhesion, resin welding, or the like.

[0233] In a modified example, the insulating partition wall 71 may include only one or two of the holding base wall portion 562, the card wall portion 341, and the case wall portion 98. Further, the insulating partition wall 71 is not essential and can be omitted.

[0234] In the above basic example, the first contact device is a so-called a-contact (normally open contact) that cuts off the circuit when not energized, but it is not limited to this. In a modified example, the first contact device may be a so-called b-contact (normally closed contact) that forms a circuit when not energized. In a modified example, the first contact device may be a so-called c-contact that has two first fixed contacts F1 and the first movable contact M1 contacts different first fixed contacts F1 when energized and when not energized. When the first contact device is a b-contact or a c-contact, the lower surface of the protrusion 444 of the auxiliary member 44 may be used as the first fixed contact F1.

[0235] In the above basic example, the second contact device is a so-called b-contact, but it is not limited to this. In a modified example, the second contact device may be an a-contact or a c-contact.

[0236] (4) Aspect As is clear from the embodiments and modifications described above, the following aspects are disclosed in this specification.

[0237] The electromagnetic relays (100, 100B) of the first aspect include a coil (21, 21B), a bobbin (22, 22B), a core (23, 23B), a terminal block (33, 33B), a first fixed contact (F1), a first movable spring (31, 31B), a second fixed contact (F2), a second movable spring (52, 52A, 52B), and a card (34, 34A, 34B). The coil (21, 21B) is wound around the bobbin (22, 22B). The core (23, 23B) is inserted vertically along the first axis (A1) inside the coil (21, 21B). The terminal block (33, 33B) has a lower surface facing the upper surface of the core (23, 23B). The first movable spring (31, 31B) has a first movable contact (M1). The first movable contact (M1) faces the first fixed contact (F1) along the first axis (A1) and makes contact with and separates from the first fixed contact (F1). The second movable spring (52, 52A, 52B) has a second movable contact (M2). The second movable contact (M2) faces the second fixed contact (F2) and makes contact with and separates from the second fixed contact (F2). The card (34, 34A, 34B) causes the second movable contact (M2) to make contact with and separate from the second fixed contact (F2) in response to switching between energization and non-energization of the coil (21, 21B). The first movable spring (31, 31B) is fixed to the upper surface of the terminal block (33, 33B). The terminal block (33, 33B) has a first end (E1) and a second end (E2) at both ends in a top view. The first movable contact (M1) is provided on the first movable spring (31, 31B) on the side of the first end (E1) of the terminal block (33, 33B) in a top view. The card (34, 34A, 34B) is provided on the side of the second end (E2) of the terminal block (33, 33B) in a top view.

[0238] According to this aspect, it is possible to simplify the structure. In addition, it is possible to increase the contact pressure between the first movable contact (M1) and the first fixed contact (F1). Further, it is possible to increase the distance between the first movable contact (M1) and the second movable contact (M2), and reduce the possibility that an arc generated at the first movable contact (M1) affects the second movable contact (M2) or an arc generated at the second movable contact (M2) affects the first movable contact (M1).

[0239] In the electromagnetic relays (100, 100B) of the second aspect, in the first aspect, the card (34, 34A, 34B) is fixed to the second end (E2) of the terminal (33, 33B).

[0240] According to this aspect, it is possible to simplify the structure.

[0241] In the electromagnetic relays (100, 100B) of the third aspect, in the first or second aspect, the terminal (33, 33B) has a protrusion (334, 334B). The card (34, 34A, 34B) is fixed to the protrusion (334, 334B) of the terminal (33, 33B).

[0242] According to this aspect, it is possible to simplify the structure.

[0243] In the electromagnetic relay (100) of the fourth aspect, in any one of the first to third aspects, the card (34A) has an upper pressing portion (protrusion 343A). The upper pressing portion is located above the second movable spring (52A). The upper pressing portion presses the second movable spring (52A) downward to bring the second movable contact (M2) into contact with the second fixed contact (F2).

[0244] According to this aspect, the reliability of the contact when the second movable contact (M2) is brought into contact with the second fixed contact (F2) is increased.

[0245] In the electromagnetic relay (100) of the fifth aspect, in any one of the first to fourth aspects, the card (34) includes a lower pressing portion (projection 343). The lower pressing portion is located below the second movable spring (52). The lower pressing portion pushes the second movable spring (52) upward to separate the second movable contact (M2) from the second fixed contact (F2).

[0246] According to this aspect, the contact pressure between the second movable contact (M2) and the second fixed contact (F2) is likely to be stabilized. Also, the reliability of separation when separating the second movable contact (M2) from the second fixed contact (F2) is increased.

[0247] In the electromagnetic relay (100, 100B) of the sixth aspect, in any one of the first to fifth aspects, the card (34, 34A, 34B) includes a base portion (card wall portions 341, 341A, 341B, and cylindrical portion 342) and a projection (343, 343A, 343B). The projection (343, 343A, 343B) projects from the base portion toward the contact device (second contact device) including the second fixed contact (F2) and the second movable contact (M2). The card (34, 34A, 34B) moves the second movable spring (52, 52A, 52B) with the projection (343, 343A, 343B).

[0248] According to this aspect, it becomes possible to increase the insulation distance between the first contact device including the first fixed contact (F1) and the first movable contact (M1) and the second contact device.

[0249] In the electromagnetic relay (100, 100B) of the seventh aspect, in any one of the first to sixth aspects, the card (34, 34A, 34B) has a card wall portion (341, 341A, 341B). The card wall portion (341, 341A, 341B) is disposed between the second end (E2) of the terminal (33, 33B) and the second movable spring (52, 52A, 52B) and extends along the first axis (A1).

[0250] According to this aspect, the insulation distance between the conductive component including the terminal (33, 33B) and the conductive component including the second movable spring (52, 52A, 52B) can be increased.

[0251] The electromagnetic relay (100) according to the eighth aspect further includes a case (9) in the seventh aspect. The case (9) is insulating. The case (9) houses a coil (21), a core (23), a terminal (33), a first fixed contact (F1), a first movable spring (31), a second fixed contact (F2), second movable springs (52, 52A), and cards (34, 34A). The case (9) has a case wall portion (98). The case wall portion (98) is disposed between the second end (E2) of the terminal (33) and the second movable springs (52, 52A) and is adjacent to the card wall portions (341, 341A).

[0252] According to this aspect, the insulation distance between the conductive component including the terminal (33) and the conductive component including the second movable springs (52, 52A) can be increased. Also, it becomes possible to prevent the cards (34, 34A) from coming off.

[0253] In the electromagnetic relay (100) according to the ninth aspect, in the eighth aspect, the distance between the case wall portion (98) and the second movable springs (52, 52A) is shorter than the distance between the card wall portions (341, 341A) and the second movable springs (52, 52A).

[0254] According to this aspect, the insulation distance between the conductive component including the terminal (33) and the conductive component including the second movable springs (52, 52A) can be increased. Also, it becomes possible to prevent the cards (34, 34A) from coming off.

[0255] The electromagnetic relay (100) according to the tenth aspect further includes a case (9) in any one of the first to seventh aspects. The case (9) is insulating. The case (9) houses a coil (21), a core (23), a terminal (33), a first fixed contact (F1), a first movable spring (31), a second fixed contact (F2), second movable springs (52, 52A), and cards (34, 34A). The case (9) has a case wall portion (98). The case wall portion (98) is disposed between the second end (E2) of the terminal (33) and the second movable springs (52, 52A).

[0256] According to this aspect, it is possible to increase the insulation distance between the conductive component including the pole piece (33) and the conductive component including the second movable spring (52, 52A).

[0257] In the electromagnetic relay (100, 100B) of the eleventh aspect, in any one of the first to tenth aspects, in a top view, the first fixed contact (F1) and the second fixed contact (F2) are on opposite sides across the axis of the coil (21, 21B) in the direction connecting the first end (E1) and the second end (E2) of the pole piece (33, 33B).

[0258] According to this aspect, it is possible to increase the distance between the first fixed contact (F1) and the second fixed contact (F2). Thereby, it is possible to reduce the possibility that an arc generated at the first fixed contact (F1) affects the second fixed contact (F2) or an arc generated at the second fixed contact (F2) affects the first fixed contact (F1).

[0259] The electromagnetic relay (100, 100B) of the twelfth aspect further includes an armature (25) in any one of the first to eleventh aspects. The armature (25) forms a magnetic circuit of the coil (21) together with the pole piece (33) and the iron core (23). An insulating partition (71) is disposed between the armature (25) and the second fixed contact (F2).

[0260] According to this aspect, it is possible to increase the insulation distance between the conductive component including the armature (25) and the conductive component including the second fixed contact (F2). The insulating partition (71) may include at least one of, for example, a card wall portion (341, 341A, 341B), a case wall portion (98), and a holding base wall portion (562).

[0261] In the electromagnetic relay (100) according to the 13th aspect, in any one of the 1st to 12th aspects, the first movable spring (31) has conductive portions (fixed pieces 36, 36B, spring pieces 37, 37B) that are located between the coil (21) and the second fixed contact (F2) in a top view. An insulating partition wall (71) is disposed between the conductive portion and the second fixed contact (F2).

[0262] According to this aspect, it becomes possible to increase the insulation distance between the conductive component including the first movable spring (31) and the conductive component including the second fixed contact (F2).

[0263] The electromagnetic relay (100, 100B) according to the 14th aspect further includes a first terminal block (81) and a second terminal block (82) in any one of the 1st to 13th aspects. The first terminal block (81) includes the bobbin (22, 22B). The first terminal block (81) holds the first movable spring (31, 31B). The second terminal block (82) holds the second fixed contact (F2) and the second movable spring (52, 52A, 52B). The second terminal block (82) is separate from the first terminal block (81) and is fixed to the first terminal block (81).

[0264] According to this aspect, it becomes possible to perform the adjustment of the components held by one terminal block (for example, the first terminal block 81) separately from the adjustment of the components held by the other terminal block (for example, the second terminal block 82).

[0265] In the electromagnetic relay (100, 100B) according to the 15th aspect, in the 14th aspect, one of the first terminal block (81) and the second terminal block (82) is press-fitted into the remaining terminal block of the first terminal block (81) and the second terminal block (82).

[0266] According to this aspect, the assembly of the electromagnetic relay (100, 100B) becomes easy.

[0267] The electromagnetic relay (100) according to the 16th aspect further includes a case (9) in the 14th or 15th aspect. The case (9) is insulating. The case (9) houses a coil (21), an iron core (23), a contact pole (33), a first fixed contact (F1), a first movable spring (31), a second fixed contact (F2), a second movable spring (52), a card (34), a first terminal block (81), and a second terminal block (82). The case (9) has a guide rib (99) for preventing displacement of the case (9) with respect to the second terminal block (82).

[0268] According to this aspect, it is possible to prevent displacement of the case (9) with respect to the second terminal block (82).

[0269] The electromagnetic relay (100) according to the 17th aspect further includes a third terminal block (83) in any one of the 14th to 16th aspects. The third terminal block (83) is separate from the first terminal block (81) and the second terminal block (82). The third terminal block (83) holds the first fixed contact (F1). The third terminal block (83) is assembled to the first terminal block (81) along a second axis (A2) intersecting the first axis (A1). The second terminal block (82) is assembled to the first terminal block along the second axis (A2).

[0270] According to this aspect, it is possible to simplify the manufacturing process of the electromagnetic relay (100).

[0271] In the electromagnetic relay (100, 100B) according to the 18th aspect, in any one of the 1st to 17th aspects, the first movable contact (M1) moves along the first contact separation axis (X1) to contact and separate from the first fixed contact (F1). The second movable contact (M2) moves along the second contact separation axis (X2) to contact and separate from the second fixed contact (F2). The second contact separation axis (X2) is along the first contact separation axis (X1).

[0272] According to this aspect, it becomes easy to clean the contact device. Also, it becomes easy to take measures against vibration.

Explanation of Reference Numerals

[0273] 100, 100B Electromagnetic Relay 21, 21B Coil 22, 22B Bobbin 23, 23B Core 24 Insulating Member 25 Armature 31, 31B First Movable Spring 33, 33B Contact Pole 334, 334B Projection 34, 34A, 34B Card 341, 341A, 341B Card Wall Portion (Base Portion, Insulating Partition) 342 Cylindrical Portion (Base Portion) 343 Projection (Lower Pressing Portion) 343A Projection (Upper Pressing Portion) 343B Projection 36 Fixed Piece (Conductive Portion) 37 Spring Piece (Conductive Portion) 41 First Holding Base 52, 52A, 52B Second Movable Spring 56, 56B Second Holding Base 562 Holding Base Wall Portion 71 Insulating Partition 81 First Terminal Block 82 Second Terminal Block 83 Third Terminal Block 9 Case 98 Case Wall Portion 99 Guide Rib F1 First Fixed Contact F2 Second Fixed Contact M1 First Movable Contact M2 Second Movable Contact A1 First Axis A2 Second Axis E1 First End E2 Second End X1 First Contact Separation Axis X2 Second Contact Separation Axis

Claims

1. A coil, a bobbin around which the coil is wound, a core disposed inside the coil, a contact pole facing the core, a first fixed contact, a first movable spring having a first movable contact that makes and breaks contact with the first fixed contact, a second fixed contact, a second movable spring having a second movable contact that makes and breaks contact with the second fixed contact, a card that separates and contacts the second movable contact from and to the second fixed contact in response to switching between energization and non-energization of the coil, and comprising, the first movable spring is fixed to the contact pole, the card moves upward when the first movable contact moves downward and moves downward when the first movable contact moves upward, the first movable contact moves along a first make-and-break axis to make and break contact with the first fixed contact, the second movable contact moves along a second make-and-break axis to make and break contact with the second fixed contact, the second make-and-break axis is along the first make-and-break axis, an electromagnetic relay.

2. The contact pole has, a first end, a second end that is located farther from the first movable contact than the first end and to which the card is fixed, and has, the electromagnetic relay according to Claim 1.

3. The contact pole includes a protrusion, the card is fixed to the protrusion of the contact pole, the electromagnetic relay according to Claim 1 or 2.

4. The card includes an upper pressing portion, the upper pressing portion is located above the second movable spring and presses the second movable spring downward to bring the second movable contact into contact with the second fixed contact, the electromagnetic relay according to any one of Claims 1 to 3.

5. The card includes a lower pressing portion, the lower pressing portion is located below the second movable spring and presses the second movable spring upward to separate the second movable contact from the second fixed contact, the electromagnetic relay according to any one of Claims 1 to 4.

6. The card has, a base portion, a protruding portion that protrudes from the base portion toward a contact device including the second fixed contact and the second movable contact, and has, the card moves the second movable spring at the protruding portion, the electromagnetic relay according to any one of Claims 1 to 5.

7. The contact pole has, a first end, a second end that is located farther from the first movable contact than the first end and closer to the second movable contact than the first end, and has, the card has a card wall portion disposed between the second end of the contact pole and the second movable spring. The electromagnetic relay according to any one of claims 1 to 6.

8. Further comprising an insulating case for housing the coil, the iron core, the armature, the first fixed contact, the first movable spring, the second fixed contact, the second movable spring, and the card, The case has a case wall portion disposed between the second end of the armature and the second movable spring and adjacent to the card wall portion. The electromagnetic relay according to claim 7.

9. The distance between the case wall portion and the second movable spring is shorter than the distance between the card wall portion and the second movable spring. The electromagnetic relay according to claim 8.

10. The armature has a first end, a second end located farther from the first movable contact than the first end and closer to the second movable contact than the first end, and has Further comprising an insulating case for housing the coil, the iron core, the armature, the first fixed contact, the first movable spring, the second fixed contact, the second movable spring, and the card, The case has a case wall portion disposed between the second end of the armature and the second movable spring. The electromagnetic relay according to any one of claims 1 to 7.

11. The armature has a first end, a second end located farther from the first movable contact than the first end and closer to the second movable contact than the first end, and has In a top view, the first fixed contact and the second fixed contact are on opposite sides of each other across the axis of the coil in a direction connecting the first end and the second end of the armature. The electromagnetic relay according to any one of claims 1 to 10.

12. Further comprising a yoke that forms a magnetic circuit of the coil together with the armature and the iron core, An insulating partition is disposed between the yoke and the second fixed contact. The electromagnetic relay according to any one of claims 1 to 11.

13. The first movable spring has a conductive portion located between the coil and the second fixed contact in a top view, An insulating partition is disposed between the conductive portion and the second fixed contact. The electromagnetic relay according to any one of claims 1 to 12.

14. Further comprising a first terminal block that includes the bobbin and holds the first movable spring, and a second terminal block that holds the second fixed contact and the second movable spring, and further comprising The second terminal block is separate from the first terminal block and is fixed to the first terminal block. The electromagnetic relay according to any one of claims 1 to 13.

15. One of the first terminal block and the second terminal block is press-fitted into the remaining terminal block of the first terminal block and the second terminal block. The electromagnetic relay according to claim 14.

16. The electromagnetic relay further includes an insulating case that houses the coil, the iron core, the armature, the first fixed contact, the first movable spring, the second fixed contact, the second movable spring, the card, the first terminal block, and the second terminal block. The case has a guide rib that prevents displacement of the case with respect to the second terminal block. The electromagnetic relay according to claim 14 or 15.

17. The electromagnetic relay further includes a third terminal block that is separate from the first terminal block and the second terminal block and holds the first fixed contact. The first terminal block is disposed at a position between the second terminal block and the third terminal block. The electromagnetic relay according to any one of claims 14 to 16.

18. A coil, An iron core disposed inside the coil, An armature facing the iron core, A first fixed contact, A first movable spring having a first movable contact disposed at a position overlapping the first fixed contact in a top view, A second fixed contact, A second movable spring having a second movable contact disposed at a position overlapping the second fixed contact in a top view, A card that separates and contacts the second movable contact with respect to the second fixed contact, and includes The armature is a first end, a second end that is located farther from the first movable contact than the first end, closer to the second movable contact than the first end, moves upward when the first end moves downward, and moves downward when the first end moves upward, and has The first movable spring is mechanically coupled to the armature, when the first end of the armature moves downward, the first movable contact moves downward, and when the first end of the armature moves upward, the first movable contact moves upward, The card is located closer to the second end of the armature than the first movable contact, mechanically coupled to the armature, moves upward when the first movable contact moves downward, and moves downward when the first movable contact moves upward, The first movable contact moves along a first contact separation axis to contact and separate from the first fixed contact, The second movable contact moves along a second contact separation axis to contact and separate from the second fixed contact, The second contact separation axis is along the first contact separation axis. Electromagnetic relay.

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