Electromagnetic relay

Abstract

To prevent upsizing of an electromagnetic relay while reducing an impact on the operation of an auxiliary contact part by a main contact part.SOLUTION: An electromagnetic relay comprises a base, a first fixed terminal, a first fixed contact, a second fixed terminal, a second fixed contact, a main contact part, a coil part, an auxiliary contact part, and a second moving member. The main contact part includes a movable contact piece, a first movable contact, a second movable contact, and a first moving member. The movable contact piece extends in a lateral direction. Between a first closed position and a first open position, the first moving member is movable in a moving direction perpendicular to the lateral direction. The main contact part is supported by the base in a supporting direction perpendicular to the lateral direction and the moving direction. The coil part is supported by the base in the supporting direction. The auxiliary contact part includes an auxiliary fixed terminal, an auxiliary movable terminal, and an auxiliary movable contact. In the moving direction of the first moving member, the auxiliary contact part is disposed opposite to the main contact part with respect to the coil part. The second moving member moves in the moving direction in conjunction with the first moving member.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an electromagnetic relay.

Background Art

[0002] A plunger-type electromagnetic relay includes a pair of fixed terminals, a contact portion, and a coil portion (see, for example, Patent Document 1). A fixed contact is connected to the fixed terminal. The contact portion includes a movable contact piece, a pair of movable contacts, and a moving member. The pair of movable contacts are connected to the movable contact piece. The moving member supports the movable contact piece. The coil portion includes a coil and a movable iron core. The movable iron core is connected to the moving member. When the movable iron core moves due to the magnetic force generated by the coil, the moving member moves. Thereby, when the movable contact piece moves, the movable contact and the fixed contact are opened and closed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described electromagnetic relay, the contact portion and the coil portion are supported by a base. When assembling the electromagnetic relay, the contact portion and the coil portion are assembled to the base in the moving direction of the moving member. Therefore, the assembling accuracy of the contact portion and the coil portion may affect the operation of the electromagnetic relay. For example, depending on the assembling accuracy, the distance of the gap between the movable contact and the fixed contact may be different, which may affect the operation of the electromagnetic relay.

[0005] On the one hand, there is an electromagnetic relay provided with an auxiliary contact part for detecting the open / closed state of the contacts at the main contact part. The auxiliary contact part operates in conjunction with the operation of the main contact part. Therefore, if the operation of the main contact part is affected by the assembly accuracy, the operation of the auxiliary contact part is also affected. Further, when the auxiliary contact part is arranged near the main contact part, the auxiliary contact part is affected by the opening and closing of the contacts of the main contact part. However, providing a structure for isolating the auxiliary contact part from the main contact part causes the electromagnetic relay to become larger in size. An object of the present invention is to reduce the influence of the main contact part on the operation of the auxiliary contact part and to suppress the increase in size of the electromagnetic relay.

Means for Solving the Problem

[0006] An electromagnetic relay according to one aspect of the present invention includes a base, a first fixed terminal, a first fixed contact, a second fixed terminal, a second fixed contact, a main contact section, a coil section, an auxiliary contact section, and a second moving member. The first fixed terminal is supported by the base. The first fixed contact is connected to the first fixed terminal. The second fixed terminal is supported by the base. The second fixed contact is connected to the second fixed terminal. The main contact section includes a movable contact piece, a first movable contact, a second movable contact, and a first moving member. The movable contact piece extends in a lateral direction. The first movable contact is connected to the movable contact piece. The second movable contact is connected to the movable contact piece. The first moving member holds the movable contact piece at a position between the first movable contact and the second movable contact. The first moving member is movable in a movement direction perpendicular to the lateral direction between a first closed position and a first open position. When the first moving member is in a first closed position, the first movable contact contacts the first fixed contact, and the second movable contact contacts the second fixed contact. When the first moving member is in a first open position, the first movable contact opens away from the first fixed contact, and the second movable contact opens away from the second fixed contact. The main contact portion is supported by the base in a first support direction perpendicular to the lateral direction and the moving direction. The coil portion includes a coil, a spool, and a movable core. The spool includes a hole extending in the moving direction. The coil is wound around the spool. The movable core is disposed within the hole of the spool. The movable core is connected to the first moving member. The coil portion is supported by the base in the first support direction. The auxiliary contact portion includes an auxiliary fixed terminal, an auxiliary movable terminal, and an auxiliary movable contact. The auxiliary fixed terminal is electrically insulated from the first fixed terminal and the second fixed terminal. The auxiliary fixed contact is connected to the auxiliary fixed terminal. The auxiliary movable terminal is electrically insulated from the movable contact piece. The auxiliary movable contact is connected to the auxiliary movable terminal. The auxiliary contact portion is arranged on the opposite side of the coil portion from the main contact portion in the movement direction of the first movable member. The second movable member is movable between a second closed position and a second open position. When the second movable member is in the second closed position, the auxiliary movable contact contacts the auxiliary fixed contact. When the second movable member is in the second open position, the auxiliary movable contact is separated from the auxiliary fixed contact. The second movable member moves in the movement direction in conjunction with the first movable member.

[0007] In the electromagnetic relay according to this aspect, the main contact portion and the coil portion are supported by the base in a first support direction. The first support direction is perpendicular to the moving direction of the first moving member. Therefore, the influence of the assembling accuracy on the operations of the main contact portion and the auxiliary contact portion is reduced. Further, the auxiliary contact portion is disposed on the side opposite to the main contact portion with respect to the coil portion in the moving direction of the first moving member. Thereby, the influence on the auxiliary contact portion due to the opening and closing of the contacts at the main contact portion is reduced, and the increase in size of the electromagnetic relay is suppressed.

[0008] The first movable contact, the second movable contact, and the auxiliary movable contact may be movable in the moving direction. In this case, the auxiliary movable contact moves in the same direction as the first movable contact and the second movable contact. Thereby, the auxiliary movable contact operates stably.

[0009] The moving direction may include a first moving direction from the main contact portion toward the coil portion and a second moving direction opposite to the first moving direction. The coil portion may further include a fixed core disposed opposite to the movable core. The movable core may be disposed in the second moving direction with respect to the fixed core. The first moving member may move from the first open position to the first closed position by moving in the first moving direction. In this case, when the movable core is drawn into the spool, the first movable contact and the second movable contact come into contact with the first fixed contact and the second fixed contact, respectively. Thereby, the contact stability of the contacts is improved.

[0010] The second moving member may extend through a position in a second support direction opposite to the first support direction with respect to the coil portion. In this case, the auxiliary movable terminal can be lengthened. Thereby, it becomes easy to adjust the contact force or the stroke amount of the auxiliary movable contact. The second moving member may extend through a lateral position with respect to the coil portion. In this case, the height of the electromagnetic relay can be reduced. The second moving member may extend through the hole of the spool. In this case, the height of the electromagnetic relay can be reduced.

[0011] The electromagnetic relay may further include a case. The case may be attached to the base. The case may cover the coil portion. The second moving member may include a protrusion protruding toward the case. In this case, even if the case is deformed, the operation of the second moving member is stabilized.

[0012] The lateral direction may include a first lateral direction and a second lateral direction opposite to the first lateral direction. The case may include a first rib and a second rib. The first rib may protrude from the inner surface of the case. The first rib may be arranged in the first lateral direction with respect to the second moving member. The second rib may protrude from the inner surface of the case. The second rib may be arranged in the second lateral direction with respect to the second moving member. In this case, even if the electromagnetic relay receives a large impact in the lateral direction, the displacement of the second moving member is suppressed.

[0013] When the first moving member is in the first open position, the second moving member may be in contact with the auxiliary movable terminal. In this case, when the movement of the first moving member starts toward the first closed position, the movement of the first moving member is assisted by the elastic force of the auxiliary movable terminal. Thereby, the operating performance of the main contact portion is improved.

[0014] The second moving member may include a first contact portion and a second contact portion. The first contact portion may be in contact with the auxiliary movable terminal. The first contact portion may be arranged on the side opposite to the auxiliary fixed contact with respect to the auxiliary movable terminal in the moving direction. The second contact portion may be in contact with the auxiliary movable terminal. The second contact portion may be arranged on the same side as the auxiliary fixed contact with respect to the auxiliary movable terminal in the moving direction. The second contact portion may be arranged laterally displaced with respect to the auxiliary movable contact. In this case, the wear powder generated from the second moving member is suppressed from adhering to the auxiliary movable contact. Thereby, the contact stability of the auxiliary movable contact is improved.

[0015] The second moving member may further include a third contact portion. The third contact portion may contact the auxiliary movable terminal. The third contact portion may be arranged on the same side as the auxiliary fixed contact with respect to the auxiliary movable terminal in the moving direction. The first contact portion may be arranged between the second contact portion and the third contact portion in the lateral direction. In this case, the auxiliary movable terminal can be stably operated by the second moving member.

[0016] The electromagnetic relay may further include an insulating wall. The insulating wall may be arranged between the auxiliary contact portion and the coil portion. In this case, the insulation between the auxiliary contact portion and the coil portion is improved.

[0017] The first moving member may be in the first open position and the second moving member may be in the second open position. The first moving member may be in the first closed position and the second moving member may be in the second closed position. In this case, with the first movable contact and the second movable contact each contacting the first fixed contact and the second fixed contact, the auxiliary movable contact contacts the auxiliary fixed contact. Also, with the first movable contact and the second movable contact each separated from the first fixed contact and the second fixed contact, the auxiliary movable contact separates from the auxiliary fixed contact.

[0018] The first moving member may be in the first open position and the second moving member may be in the second closed position. The first moving member may be in the first closed position and the second moving member may be in the second open position. In this case, with the first movable contact and the second movable contact each contacting the first fixed contact and the second fixed contact, the auxiliary movable contact separates from the auxiliary fixed contact. Also, with the first movable contact and the second movable contact each separated from the first fixed contact and the second fixed contact, the auxiliary movable contact contacts the auxiliary fixed contact.

[0019] The first fixed terminal, the second fixed terminal, the auxiliary fixed terminal, and the auxiliary movable terminal may project outward from the base in the same direction of the electromagnetic relay. In this case, compared with the case where the auxiliary fixed terminal and the auxiliary movable terminal project in a direction different from that of the first fixed terminal and the second fixed terminal, mounting on the substrate is easier.

Advantages of the Invention

[0020] According to the present invention, the influence of the main contact portion on the operation of the auxiliary contact portion is reduced, and the increase in size of the electromagnetic relay is suppressed.

Brief Description of the Drawings

[0021]

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

Figure 21

Figure 22

Embodiments for Carrying Out the Invention

[0022] Hereinafter, an electromagnetic relay according to an embodiment will be described with reference to the drawings. FIGS. 1 and 2 are perspective views of an electromagnetic relay 1 according to the embodiment. FIGS. 3 to 6 are side views of the electromagnetic relay 1. FIG. 7 is a top view of the electromagnetic relay 1. FIG. 8 is a longitudinal sectional view of the electromagnetic relay 1.

[0023] As shown in FIGS. 1 to 8, the electromagnetic relay 1 includes a case 2, a base 3, a main contact portion 4, a coil portion 5, a first fixed terminal 6, a second fixed terminal 7, and an auxiliary contact portion 8. In FIGS. 2 to 7, the case 2 is omitted.

[0024] In the present embodiment, the moving directions (Y1, Y2), the supporting directions (Z1, Z2), and the lateral directions (X1, X2) are defined as follows. The moving directions (Y1, Y2) are the directions in which the main contact portion 4 and the coil portion 5 are aligned with each other. The moving directions (Y1, Y2) include a first moving direction (Y1) and a second moving direction (Y2). The first moving direction (Y1) is the direction from the main contact portion 4 toward the coil portion 5. The second moving direction (Y2) is the direction opposite to the first moving direction (Y1). The second moving direction (Y2) is the direction from the coil portion 5 toward the main contact portion 4.

[0025] The support direction (Z1, Z2) is a direction perpendicular to the moving direction (Y1, Y2). The support direction (Z1, Z2) is the direction in which the base 3 and the main contact portion 4 are aligned with each other. The support direction (Z1, Z2) includes a first support direction (Z1) and a second support direction (Z2). The first support direction (Z1) is the direction from the main contact portion 4 toward the base 3. The second support direction (Z2) is the direction opposite to the first support direction (Z1). The second support direction (Z2) is the direction from the base 3 toward the main contact portion 4. Alternatively, the support direction (Z1, Z2) may be the direction in which the base 3 and the coil portion 5 are aligned with each other.

[0026] The lateral direction (X1, X2) is a direction perpendicular to the moving direction (Y1, Y2) and the support direction (Z1, Z2). The lateral direction (X1, X2) includes a first lateral direction (X1) and a second lateral direction (X2). The second lateral direction (X2) is the direction opposite to the first lateral direction (X1).

[0027] The case 2 and the base 3 are made of, for example, resin. The base 3 supports a first fixed terminal 6, a second fixed terminal 7, a main contact portion 4, a coil portion 5, and an auxiliary contact portion 8. The case 2 is attached to the base 3. The case 2 covers the base 3, the main contact portion 4, the coil portion 5, and the auxiliary contact portion 8 from the second support direction (Z2). The first fixed terminal 6 and the second fixed terminal 7 are formed of a material having conductivity such as copper, for example. The first fixed terminal 6 and the second fixed terminal 7 each extend in the support direction (Z1, Z2). The first fixed terminal 6 and the second fixed terminal 7 are arranged apart from each other in the lateral direction (X1, X2). The first fixed terminal 6 and the second fixed terminal 7 protrude outward from the base 3 in the first support direction (Z1).

[0028] The first fixed terminal 6 is connected to the first fixed contact 11 and the third fixed contact 13. The first fixed contact 11 and the third fixed contact 13 are arranged apart from each other in the support direction (Z1, Z2) on the first fixed terminal 6. The second fixed terminal 7 is connected to the second fixed contact 12 and the fourth fixed contact 14. The second fixed contact 12 and the fourth fixed contact 14 are arranged apart from each other in the support direction (Z1, Z2) on the second fixed terminal 7. The first to fourth fixed contacts 11 - 14 are formed of a conductive material such as silver or copper, for example.

[0029] The main contact portion 4 is supported by the base 3 in the first support direction (Z1). The main contact portion 4 is assembled to the base 3 in the first support direction (Z1). The main contact portion 4 includes a first movable contact piece 15, a second movable contact piece 16, and a first moving member 17. The first movable contact piece 15 and the second movable contact piece 16 extend in the lateral direction (X1, X2). The first movable contact piece 15 and the second movable contact piece 16 are separate from each other. The first movable contact piece 15 and the second movable contact piece 16 are arranged apart from each other in the support direction (Z1, Z2). The second movable contact piece 16 is arranged between the first movable contact piece 15 and the base 3 in the support direction (Z1, Z2). The first movable contact piece 15 and the second movable contact piece 16 are formed of a conductive material such as copper, for example.

[0030] The first movable contact piece 15 is connected to the first movable contact 21 and the second movable contact 22. The first movable contact 21 and the second movable contact 22 are arranged apart from each other in the lateral direction (X1, X2). The first movable contact 21 is arranged facing the first fixed contact 11. The second movable contact 22 is arranged facing the second fixed contact 12.

[0031] The second movable contact piece 16 is connected to a third movable contact 23 and a fourth movable contact 24. The third movable contact 23 and the fourth movable contact 24 are arranged apart from each other in the lateral direction (X1, X2). The third movable contact 23 is arranged facing the third fixed contact 13. The fourth movable contact 24 is arranged facing the fourth fixed contact 14. The first to fourth movable contacts 21 - 24 are formed of a material having conductivity such as silver or copper, for example.

[0032] The first moving member 17 is connected to the first movable contact piece 15 and the second movable contact piece 16. The first moving member 17 is made of an insulating material such as resin. The first moving member 17 is movable in the moving direction (Y1, Y2) between a first closed position and a first open position. In FIGS. 3, 5, and 7, the first moving member 17 is located at the first open position. When the first moving member 17 is at the first open position, the first to fourth movable contacts 21 - 24 are separated from the first to fourth fixed contacts 11 - 14, respectively.

[0033] In FIGS. 4 and 6, the first moving member 17 is located at the first closed position. When the first moving member 17 is at the first closed position, the first to fourth movable contacts 21 - 24 contact the first to fourth fixed contacts 11 - 14, respectively. The first moving member 17 moves from the first open position to the first closed position by moving in the first moving direction (Y1). The first moving member 17 moves from the first closed position to the first open position by moving in the second moving direction (Y2).

[0034] The coil part 5 is supported by the base 3 in the first support direction (Z1). The coil part 5 is assembled to the base 3 in the first support direction (Z1). The coil part 5 moves the first movable contact piece 15 and the second movable contact piece 16 by electromagnetic force. The coil part 5 moves the first movable contact piece 15, the second movable contact piece 16, and the first moving member 17 in the first moving direction (Y1) and the second moving direction (Y2). The first moving direction (Y1) is the direction in which the first to fourth movable contact points 21 - 24 contact the first to fourth fixed contact points 11 - 14 respectively in the moving direction (Y1, Y2). The second moving direction (Y2) is the direction in which the first to fourth movable contact points 21 - 24 separate from the first to fourth fixed contact points 11 - 14 respectively in the moving direction (Y1, Y2). The coil part 5 includes a coil 31, a spool 32, a movable iron core 33, a fixed iron core 34, and a yoke 35.

[0035] The coil 31 is wound around the spool 32. The axis of the coil 31 extends in the moving direction (Y1, Y2). The coil 31 is connected to the coil terminals 36, 37. The coil terminals 36, 37 protrude from the base 3 in the first support direction (Z1). As shown in FIG. 8, the spool 32 includes a hole 321 that extends in the moving direction (Y1, Y2). At least a part of the movable iron core 33 is disposed within the hole 321 of the spool 32. The movable iron core 33 is provided so as to be movable in the first moving direction (Y1) and the second moving direction (Y2).

[0036] The fixed iron core 34 is disposed within the hole 321 of the spool 32. The fixed iron core 34 is disposed opposite to the movable iron core 33 in the moving direction (Y1, Y2). The movable iron core 33 is disposed in the first moving direction (Y1) with respect to the fixed iron core 34. The fixed iron core 34 includes a hole 341 that extends in the moving direction (Y1, Y2). When the coil 31 is energized, it generates an electromagnetic force that moves the movable iron core 33 in the first moving direction (Y1).

[0037] The movable iron core 33 is connected to the first moving member 17. The first movable contact piece 15 and the movable iron core 33 are electrically insulated by the first moving member 17. The second movable contact piece 16 and the movable iron core 33 are electrically insulated by the first moving member 17. The movable iron core 33 moves integrally with the first moving member 17 in the moving directions (Y1, Y2). The movable iron core 33 moves in the first moving direction (Y1) according to the magnetic force generated from the coil 31. Along with the movement of this movable iron core 33, the first moving member 17 moves to the first closed position. Along with the movement of the first moving member 17, the first movable contact piece 15 and the second movable contact piece 16 move in the first moving direction (Y1) or the second moving direction (Y2).

[0038] The yoke 35 is arranged to surround the coil 31. The yoke 35 is arranged on the magnetic circuit constituted by the coil 31. The yoke 35 includes a first yoke 41, a second yoke 42, a third yoke 43, and a fourth yoke 44. The first yoke 41 and the second yoke 42 extend in the lateral directions (X1, X2) and the support directions (Z1, Z2). The first yoke 41 and the second yoke 42 face the coil 31 in the moving directions (Y1, Y2). The coil 31 is located between the first yoke 41 and the second yoke 42 in the moving directions (Y1, Y2). The first yoke 41 faces the first moving member 17 in the moving directions (Y1, Y2). The second yoke 42 is connected to the fixed iron core 34.

[0039] The third yoke 43 and the fourth yoke 44 extend in the moving directions (Y1, Y2) and the support directions (Z1, Z2). The third yoke 43 and the fourth yoke 44 face the coil 31 in the lateral directions (X1, X2). The coil 31 is located between the third yoke 43 and the fourth yoke 44 in the lateral directions (X1, X2).

[0040] The first moving member 17 includes a holding portion 45, a first connecting portion 46, and a first linking portion 47. The holding portion 45 supports the first movable contact piece 15 and the second movable contact piece 16. The first connecting portion 46 is connected to the movable iron core 33. The first linking portion 47 is located between the holding portion 45 and the first connecting portion 46. The first linking portion 47 connects the holding portion 45 and the first connecting portion 46. The first linking portion 47 extends in the moving directions (Y1, Y2).

[0041] The holding portion 45 extends in the supporting directions (Z1, Z2). The holding portion 45 is supported by the base 3 in the supporting directions (Z1, Z2). When the first moving member 17 moves in the moving directions (Y1, Y2), the holding portion 45 slides on the base 3. The holding portion 45 includes a first support hole 48, a second support hole 49, and a partition wall 59. The first movable contact piece 15 is disposed in the first support hole 48. The holding portion 45 holds the first movable contact piece 15 between the first movable contact 21 and the second movable contact 22. The first movable contact piece 15 extends from the holding portion 45 in the first lateral direction (X1) and the second lateral direction (X2).

[0042] The second movable contact piece 16 is disposed in the second support hole 49. The holding portion 45 holds the second movable contact piece 16 between the third movable contact 23 and the fourth movable contact 24. The second movable contact piece 16 extends from the holding portion 45 in the first lateral direction (X1) and the second lateral direction (X2). The partition wall 59 partitions the first support hole 48 and the second support hole 49. The partition wall 59 is disposed between the first movable contact piece 15 and the second movable contact piece 16 in the supporting directions (Z1, Z2).

[0043] As shown in FIG. 8, the main contact portion 4 includes a first contact spring 51 and a second contact spring 52. The first contact spring 51 is disposed between the first movable contact piece 15 and the holding portion 45. The first contact spring 51 is disposed within the first support hole 48. With the first movable contact 21 in contact with the first fixed contact 11 and the second movable contact 22 in contact with the second fixed contact 12, the first contact spring 51 presses the first movable contact piece 15 toward the first fixed terminal 6 and the second fixed terminal 7. The first contact spring 51 is a coil spring and is in a natural length state when the first moving member 17 is at the first open position.

[0044] The second contact spring 52 is disposed between the second movable contact piece 16 and the second holding portion 45. The second contact spring 52 is disposed within the second support hole 49. With the third movable contact 23 in contact with the third fixed contact 13 and the fourth movable contact 24 in contact with the fourth fixed contact 14, the second contact spring 52 presses the second movable contact piece 16 toward the first fixed terminal 6 and the second fixed terminal 7. The second contact spring 52 is a coil 31 spring and is in a natural length state when the first moving member 17 is at the first open position.

[0045] The first connection portion 46 is connected to the first coupling portion 47. As shown in FIG. 8, the first connection portion 46 includes a hole 53 and a groove 54. The hole 53 extends in the support direction (Z1, Z2). The groove 54 communicates with the hole 53. The movable iron core 33 includes a head portion 55. The head portion 55 protrudes from the coil portion 5 in the second moving direction (Y2). The head portion 55 is disposed within the hole 53 through the groove 54. Thereby, the first moving member 17 is prevented from coming off the movable iron core 33 in the moving direction (Y1, Y2).

[0046] The electromagnetic relay 1 includes an insulating wall 25. The insulating wall 25 is disposed between the main contact portion 4 and the coil portion 5 in the moving direction (Y1, Y2). The insulating wall 25 is disposed between the holding portion 45 and the first connection portion 46 in the moving direction (Y1, Y2). The insulating wall 25 extends in the first support direction (Z1) from the top surface of the case 2.

[0047] As shown in FIG. 7, the electromagnetic relay 1 includes a first return spring 56 and a second return spring 57. The first return spring 56 and the second return spring 57 are disposed between the first moving member 17 and the coil portion 5. The first return spring 56 and the second return spring 57 are attached to the first connection portion 46. The first return spring 56 and the second return spring 57 are arranged apart from each other in the lateral direction (X1, X2). The first return spring 56 and the second return spring 57 bias the first moving member 17 in the second moving direction (Y2).

[0048] The auxiliary contact portion 8 is supported by the base 3 in the first supporting direction (Z1). The auxiliary contact portion 8 is assembled to the base 3 in the first supporting direction (Z1). The auxiliary contact portion 8 is disposed on the opposite side of the main contact portion 4 with respect to the coil portion 5 in the moving directions (Y1, Y2). The auxiliary contact portion 8 is disposed in the first moving direction (Y1) with respect to the coil portion 5. The coil portion 5 is disposed between the main contact portion 4 and the auxiliary contact portion 8 in the moving directions (Y1, Y2). The auxiliary contact portion 8 includes an auxiliary fixed terminal 61, an auxiliary fixed contact 62, an auxiliary movable terminal 63, and an auxiliary movable contact 64.

[0049] The auxiliary fixed terminal 61 and the auxiliary movable terminal 63 are formed of a material having conductivity such as copper, for example. The auxiliary fixed terminal 61 and the auxiliary movable terminal 63 are supported by the base 3. The auxiliary fixed terminal 61 and the auxiliary movable terminal 63 extend in the supporting directions (Z1, Z2), respectively. The auxiliary fixed terminal 61 and the auxiliary movable terminal 63 project outward from the base 3 in the first supporting direction (Z1). That is, the first fixed terminal 6, the second fixed terminal 7, the auxiliary fixed terminal 61, and the auxiliary movable terminal 63 project outward from the base 3 in the same direction toward the outside of the electromagnetic relay 1.

[0050] The auxiliary fixed terminal 61 and the auxiliary movable terminal 63 are arranged apart from each other in the moving directions (Y1, Y2). The auxiliary fixed terminal 61 is electrically insulated from the first fixed terminal 6, the second fixed terminal 7, the first movable contact piece 15, and the second movable contact piece 16. The auxiliary movable terminal 63 is electrically insulated from the first fixed terminal 6, the second fixed terminal 7, the first movable contact piece 15, and the second movable contact piece 16. The auxiliary movable terminal 63 is arranged in the second moving direction (Y2) with respect to the auxiliary fixed terminal 61.

[0051] The auxiliary fixed contact 62 and the auxiliary movable contact 64 are formed of a material having conductivity such as silver or copper, for example. The auxiliary fixed contact 62 is connected to the auxiliary fixed terminal 61. The auxiliary movable contact 64 is connected to the auxiliary movable terminal 63. The auxiliary fixed contact 62 and the auxiliary movable contact 64 are arranged facing each other in the moving directions (Y1, Y2).

[0052] The electromagnetic relay 1 includes a second moving member 18. The second moving member 18 is made of an insulating material such as resin, for example. The second moving member 18 is connected to the first moving member 17. The second moving member 18 extends from the main contact portion 4 through the position in the second supporting direction (Z2) with respect to the coil portion 5 to the auxiliary contact portion 8. The second moving member 18 moves in the moving directions (Y1, Y2) in conjunction with the first moving member 17. The second moving member 18 moves integrally with the first moving member 17. In response to the movement of the second moving member 18, the auxiliary movable terminal 63 moves in the moving directions (Y1, Y2). Thereby, the auxiliary movable contact 64 moves in the moving directions (Y1, Y2).

[0053] The second moving member 18 is movable between a second closed position and a second open position. In FIGS. 3, 5, and 7, the second moving member 18 is located at the second open position. When the first moving member 17 is at the first open position and the second moving member 18 is at the second open position, when the second moving member 18 is at the second open position, the second moving member 18 presses the auxiliary movable terminal 63 in the second moving direction (Y2), and the auxiliary movable contact 64 is separated from the auxiliary fixed contact 62.

[0054] In FIGS. 4 and 6, the second moving member 18 is located at the second closed position. The first moving member 17 is at the first closed position, and the second moving member 18 is at the second closed position. When the second moving member 18 is at the second closed position, the second moving member 18 presses the auxiliary movable terminal 63 in the first moving direction (Y1), and the auxiliary movable contact 64 is in contact with the auxiliary fixed contact 62.

[0055] FIG. 9 is a perspective view of the main contact portion 4 and the second moving member 18. As shown in FIGS. 1 to 9, the second moving member 18 includes a second connecting portion 65, a second connecting portion 66, and a contact portion 67. The second connecting portion 65 is connected to the first moving member 17. The second connecting portion 65 is arranged in the second moving direction (Y2) with respect to the coil portion 5. The second connecting portion 65 is connected to the first connecting portion 46. The second connecting portion 65 extends from the first connecting portion 46 in the second supporting direction (Z2). The second connecting portion 66 connects the second connecting portion 65 and the contact portion 67. The second connecting portion 66 is arranged in the second supporting direction (Z2) with respect to the coil portion 5. The second connecting portion 66 extends in the moving directions (Y1, Y2). The second connecting portion 66 extends from the second connecting portion 65 in the first moving direction (Y1).

[0056] The contact portion 67 is arranged in the first moving direction (Y1) with respect to the coil portion 5. The contact portion 67 contacts the auxiliary movable terminal 63. The contact portion 67 extends from the second connecting portion 66 in the first supporting direction (Z1). The contact portion 67 includes a first contact portion 68, a second contact portion 69, and a third contact portion 70. FIG. 10 is a cross-sectional view taken along line X-X in FIG. 8. As shown in FIG. 10, the auxiliary movable terminal 63 includes a first receiving portion 71, a second receiving portion 72, and a third receiving portion 73. The tip of the auxiliary movable terminal 63 has a shape divided into the first receiving portion 71, the second receiving portion 72, and the third receiving portion 73. The first receiving portion 71 is arranged between the second receiving portion 72 and the third receiving portion 73 in the lateral direction (X1, X2). The second receiving portion 72 is arranged in the first lateral direction (X1) with respect to the first receiving portion 71. The third receiving portion 73 is arranged in the second lateral direction (X2) with respect to the first receiving portion 71.

[0057] The first contact portion 68 is disposed between the second contact portion 69 and the third contact portion 70 in the lateral direction (X1, X2). The first contact portion 68 is disposed on the side opposite to the auxiliary fixed contact 62 with respect to the auxiliary movable terminal 63 in the moving direction (Y1, Y2). The first contact portion 68 is disposed in the second moving direction (Y2) with respect to the auxiliary movable terminal 63. The first contact portion 68 is disposed facing the first receiving portion 71. When the second moving member 18 moves in the first moving direction (Y1), the first contact portion 68 contacts the first receiving portion 71 and presses the auxiliary movable terminal 63 in the first moving direction (Y1). Thereby, as shown in FIGS. 4 and 6, the auxiliary movable terminal 63 moves to the second closed position, and the auxiliary movable contact 64 contacts the auxiliary fixed contact 62.

[0058] The second contact portion 69 and the third contact portion 70 are disposed on the same side as the auxiliary fixed contact 62 with respect to the auxiliary movable terminal 63 in the moving direction (Y1, Y2). The second contact portion 69 and the third contact portion 70 are disposed in the first moving direction (Y1) with respect to the auxiliary movable terminal 63. The second contact portion 69 is disposed facing the second receiving portion 72. The third contact portion 70 is disposed facing the third receiving portion 73. When the second moving member 18 moves in the second moving direction (Y2), the second contact portion 69 contacts the second receiving portion 72, the third contact portion 70 contacts the third receiving portion 73, and the second contact portion 69 and the third contact portion 70 press the auxiliary movable terminal 63 in the second moving direction (Y2). Thereby, as shown in FIGS. 3, 5, and 7, the auxiliary movable terminal 63 moves to the second open position, and the auxiliary movable contact 64 separates from the auxiliary fixed contact 62.

[0059] The second contact portion 69 and the third contact portion 70 are disposed offset in the lateral direction (X1, X2) with respect to the auxiliary movable contact 64. The second contact portion 69 is disposed offset in the first lateral direction (X1) with respect to the auxiliary movable contact 64. The third contact portion 70 is disposed offset in the second lateral direction (X2) with respect to the auxiliary movable contact 64. Thereby, wear powder generated when the second contact portion 69 and the third contact portion 70 contact the auxiliary movable terminal 63 is less likely to adhere to the auxiliary movable contact 64.

[0060] Further, the second contact portion 69 has a shape that covers the second receiving portion 72 from the auxiliary movable contact 64 side in the moving directions (Y1, Y2) and covers the second receiving portion 72 from the first receiving portion 71 side in the lateral directions (X1, X2). The third contact portion 70 has a shape that covers the third receiving portion 73 from the auxiliary movable contact 64 side in the moving directions (Y1, Y2) and covers the second receiving portion 72 from the first receiving portion 71 side in the lateral directions (X1, X2). Thereby, wear powder generated when the second contact portion 69 and the third contact portion 70 come into contact with the auxiliary movable terminal 63 is less likely to adhere to the auxiliary movable contact 64.

[0061] As shown in FIGS. 8 to 10, the second moving member 18 includes protrusions 74-77. The protrusions 74-77 project from the second connecting portion 66 toward the case 2. By the protrusions 74-77, a gap is secured between the second moving member 18 and the inner surface of the case 2. Thereby, even if the case 2 is deformed, the second moving member 18 can move stably.

[0062] Further, as shown in FIG. 10, the case 2 includes a first rib 78 and a second rib 79. The first rib 78 and the second rib 79 project from the inner surface of the case 2. The first rib 78 is arranged in the first lateral direction (X1) with respect to the second moving member 18. The second rib 79 is arranged in the second lateral direction (X2) with respect to the second moving member 18. Even if the electromagnetic relay 1 receives a large impact in the lateral directions (X1, X2), the displacement of the second moving member 18 is suppressed by the first rib 78 and the second rib 79.

[0063] Next, the operation of the electromagnetic relay 1 will be described. When the coil 31 is not energized, the coil portion 5 is not excited. In this case, the first moving member 17, together with the movable iron core 33, is pressed in the second moving direction (Y2) by the elastic forces of the return springs 56 and 57, and the first moving member 17 is located at the first open position shown in FIGS. 3 and 5. In this state, the first movable contact piece 15 and the second movable contact piece 16 are also pressed in the second moving direction (Y2) via the first moving member 17. Therefore, when the first moving member 17 is at the first open position, the first movable contact 21 and the second movable contact 22 are separated from the first fixed contact 11 and the second fixed contact 12. Similarly, when the first moving member 17 is at the first open position, the third movable contact 23 and the fourth movable contact 24 are separated from the third fixed contact 13 and the fourth fixed contact 14.

[0064] Also, the second moving member 18 is located at the second open position. In this state, the second receiving portion 72 of the auxiliary movable terminal 63 is pressed in the second moving direction (Y2) by the second contact portion 69 of the second moving member 18, and the third receiving portion 73 of the auxiliary movable terminal 63 is pressed in the second moving direction (Y2) by the third contact portion 70 of the second moving member 18. Therefore, when the first moving member 17 is at the first open position, the auxiliary movable contact 64 is separated from the auxiliary fixed contact 62. Note that the auxiliary movable terminal 63 is elastically deformed by being pressed in the second moving direction (Y2) by the second moving member 18. Therefore, the second moving member 18 is biased in the first moving direction (Y1) by the elastic force of the auxiliary movable terminal 63. However, the elastic force by the auxiliary movable terminal 63 is smaller than the elastic forces of the return springs 56 and 57. Therefore, the first moving member 17 is held at the first open position, and the second moving member 18 is held at the second open position.

[0065] When current is applied to the coil 31, the coil portion 5 is excited. In this case, due to the electromagnetic force of the coil 31, the movable iron core 33 moves in the first moving direction (Y1) against the elastic forces of the return springs 56 and 57. Thereby, the first moving member 17, the first movable contact piece 15, and the second movable contact piece 16 all move in the first moving direction (Y1). Therefore, as shown in FIGS. 4 and 6, the first moving member 17 moves to the first closed position. As a result, when the first moving member 17 is at the first closed position, the first movable contact 21 and the second movable contact 22 contact the first fixed contact 11 and the second fixed contact 12, respectively. Similarly, when the first moving member 17 is at the first closed position, the third movable contact 23 and the fourth movable contact 24 contact the third fixed contact 13 and the fourth fixed contact 14, respectively. Thereby, the first movable contact piece 15 and the second movable contact piece 16 are electrically connected to the first fixed terminal 6 and the second fixed terminal 7.

[0066] Also, together with the first moving member 17, the second moving member 18 moves in the first moving direction (Y1). Thereby, the second moving member 18 moves to the second closed position. In this state, the first receiving portion 71 of the auxiliary movable terminal 63 is pressed in the first moving direction (Y1) by the first contact portion 68 of the second moving member 18. Therefore, when the first moving member 17 is at the first closed position, the auxiliary movable contact 64 contacts the auxiliary fixed contact 62. Thereby, the auxiliary movable terminal 63 is electrically connected to the auxiliary fixed terminal 61. Note that before the first to fourth movable contacts 21 - 24 contact the first to fourth fixed contacts 11 - 14, respectively, the first contact portion 68 presses the first receiving portion 71, so that the auxiliary movable contact 64 contacts the auxiliary fixed contact 62.

[0067] When the current to the coil 31 is stopped and demagnetized, the movable iron core 33 is pressed in the second moving direction (Y2) by the elastic forces of the return springs 56 and 57. Thereby, the first moving member 17, the first movable contact piece 15, and the second movable contact piece 16 all move in the second moving direction (Y2). Therefore, as shown in FIGS. 3 and 5, the first moving member 17 moves to the first open position. As a result, when the first moving member 17 is in the first open position, the first movable contact 21 and the second movable contact 22 are separated from the first fixed contact 11 and the second fixed contact 12. Similarly, when the first moving member 17 is in the first open position, the third movable contact 23 and the fourth movable contact 24 are separated from the third fixed contact 13 and the fourth fixed contact 14. Also, the second moving member 18 moves in the second moving direction (Y2) together with the first moving member 17. Thereby, the second moving member 18 moves to the second open position. Therefore, when the first moving member 17 is in the first open position, the auxiliary movable contact 64 is separated from the auxiliary fixed contact 62.

[0068] In the electromagnetic relay 1 according to the present embodiment described above, the main contact portion 4 and the coil portion 5 are supported by the base 3 in the first support direction (Z1). The first support direction (Z1) is perpendicular to the moving directions (Y1, Y2) of the first moving member 17. Therefore, the influence of the assembling accuracy on the operations of the main contact portion 4 and the auxiliary contact portion 8 is reduced. Also, the auxiliary contact portion 8 is arranged on the side opposite to the main contact portion 4 with respect to the coil portion 5 in the moving directions (Y1, Y2) of the first moving member 17. Thereby, the influence on the auxiliary contact portion 8 due to the opening and closing of the contacts at the main contact portion 4 is reduced, and the increase in size of the electromagnetic relay 1 is suppressed.

[0069] As described above, one embodiment of the present invention has been described. However, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the invention.

[0070] In the above embodiment, the coil portion 5 pushes the first moving member 17 in the second moving direction (Y2), so that the first to fourth movable contact points 21-24 are separated from the first to fourth fixed contact points 11-14. Further, when the coil portion 5 pulls the first moving member 17 in the first moving direction (Y1), the first to fourth movable contact points 21-24 come into contact with the first to fourth fixed contact points 11-14. However, the operating direction of the first moving member 17 for opening and closing the contacts may be opposite to that of the above embodiment. That is, when the coil portion 5 pushes the first moving member 17 in the second moving direction (Y2), the first to fourth movable contact points 21-24 may come into contact with the first to fourth fixed contact points 11-14. When the coil portion 5 pulls the first moving member 17 in the first moving direction (Y1), the first to fourth movable contact points 21-24 may be separated from the first to fourth fixed contact points 11-14.

[0071] The shapes or arrangements of the first fixed terminal 6, the second fixed terminal 7, the first movable contact piece 15, and the second movable contact piece 16 may be changed. For example, the first fixed terminal 6 and the second fixed terminal 7 may protrude from the base 3 in a direction different from that of the above embodiment. The first movable contact piece 15 and the second movable contact piece 16 may be integrated. That is, the first to fourth movable contact points 21-24 may be connected to an integrated movable contact piece. Alternatively, the second movable contact piece 16, the third and fourth movable contact points 23, 24, and the third and fourth fixed contact points 13, 14 may be omitted.

[0072] The shapes or arrangements of the coil 31, the spool 32, the movable iron core 33, the fixed iron core 34, or the yoke 35 may be changed. The shapes or arrangements of the first to fourth fixed contact points 11-14 may be changed. The shapes or arrangements of the first to fourth movable contact points 21-24 may be changed.

[0073] The first fixed contact point 11 and / or the third fixed contact point 13 may be integral with the first fixed terminal 6. The first fixed contact point 11 and / or the third fixed contact point 13 may be a part of the first fixed terminal 6 and flush with other parts of the first fixed terminal 6. The second fixed contact point 12 and / or the fourth fixed contact point 14 may be integral with the second fixed terminal 7. The second fixed contact point 12 and / or the fourth fixed contact point 14 may be a part of the second fixed terminal 7 and flush with other parts of the second fixed terminal 7.

[0074] The first movable contact point 21 and / or the second movable contact point 22 may be integral with the first movable contact piece 15. The first movable contact point 21 and / or the second movable contact point 22 may be a part of the first movable contact piece 15 and flush with other parts of the first movable contact piece 15. The third movable contact point 23 and / or the fourth movable contact point 24 may be integral with the second movable contact piece 16. The third movable contact point 23 and / or the fourth movable contact point 24 may be a part of the second movable contact piece 16 and flush with other parts of the second movable contact piece 16.

[0075] The shape or arrangement of the first moving member 17 may be changed. For example, the first moving member 17 may include a shaft member that connects the movable contact pieces 15, 16 and the movable iron core 33. The first moving member 17 may be made of a conductive material. The first moving member 17 may be made of metal.

[0076] The configuration of the auxiliary contact portion 8 is not limited to the above-described embodiment and may be changed. For example, the auxiliary fixed contact point 62 may be integral with the auxiliary fixed terminal 61. The auxiliary fixed contact point 62 may be a part of the auxiliary fixed terminal 61 and flush with other parts of the auxiliary fixed terminal 61. The auxiliary movable contact point 64 may be integral with the auxiliary movable terminal 63. The auxiliary movable contact point 64 may be a part of the auxiliary movable terminal 63 and flush with other parts of the auxiliary movable terminal 63.

[0077] The shapes or arrangements of the auxiliary fixed terminal 61, the auxiliary movable terminal 63, and the second moving member 18 may be changed. For example, the auxiliary fixed terminal 61 and the auxiliary movable terminal 63 may protrude from the base 3 in a direction different from that of the above-described embodiment. Alternatively, the auxiliary fixed terminal 61 and the auxiliary movable terminal 63 may protrude from the case 2 to the outside of the electromagnetic relay 1.

[0078] The shapes or arrangements of the contact portion 67 of the second moving member 18 and the auxiliary movable terminal 63 may be changed. For example, FIG. 11 is a front view showing the contact portion 67 and the auxiliary movable terminal 63 according to the first modification. As shown in FIG. 11, the auxiliary movable terminal 63 may have a cross-shaped configuration. The auxiliary movable contact 64 may be provided in the first receiving portion 71. FIG. 12 is a front view showing the contact portion 67 and the auxiliary movable terminal 63 according to the second modification. As shown in FIG. 12, the third contact portion 70 of the second moving member 18 and the third receiving portion 73 of the auxiliary movable terminal 63 may be omitted.

[0079] FIG. 13 is a front view showing the contact portion 67 and the auxiliary movable terminal 63 according to the third modification. FIG. 14 is a front view showing the contact portion 67 and the auxiliary movable terminal 63 according to the fourth modification. As shown in FIGS. 13 and 14, the auxiliary movable terminal 63 may have a linear shape. FIG. 15 is a front view showing the contact portion 67 and the auxiliary movable terminal 63 according to the fifth modification. As shown in FIG. 15, the second contact portion 69 may be arranged across the lateral direction (X1, X2) of the auxiliary movable terminal 63.

[0080] FIG. 16 is a side view showing the contact portion 67 and the auxiliary movable terminal 63 according to the sixth modification. As shown in FIG. 16, the first contact portion 68 may press the tip of the auxiliary movable terminal 63. FIG. 17 is a side view showing the contact portion 67 and the auxiliary movable terminal 63 according to the seventh modification. As shown in FIG. 17, the first contact portion 68 may press the auxiliary movable terminal 63 at a position lower than the tip of the auxiliary movable terminal 63. Further, as shown in FIGS. 16 and 17, the first contact portion 68 may include a protrusion 81. The first contact portion 68 may press the auxiliary movable terminal 63 at the protrusion 81. Similarly, the second contact portion 69 and the third contact portion 70 may include a protrusion and may press the auxiliary movable terminal 63 at the protrusion.

[0081] FIG. 18 is a perspective view of the electromagnetic relay 1 according to the eighth modification. As shown in FIG. 18, the contact portion 67 of the second moving member 18 may include a hole 82. The first contact portion 68 and the second contact portion 69 may be the edges of the holes 82 facing each other in the moving directions (Y1, Y2).

[0082] FIG. 19 is a longitudinal sectional view of the electromagnetic relay 1 according to the ninth modification. As shown in FIG. 19, the second moving member 18 may extend through the hole 321 of the spool 32. The second moving member 18 may extend through the hole 341 of the fixed core 34. The second moving member 18 may move in the first moving direction (Y1) by being pressed by the movable core 33.

[0083] FIG. 20 is a side view of the electromagnetic relay 1 according to the tenth modification. As shown in FIG. 20, the second moving member 18 may extend through a position in the lateral direction (X1, X2) with respect to the coil portion 5. FIG. 21 is a side view of the electromagnetic relay 1 according to the eleventh modification. As shown in FIG. 21, the electromagnetic relay 1 may include an insulating wall 83. The insulating wall 83 may be disposed between the auxiliary contact portion 8 and the coil portion 5.

[0084] In the above-described embodiment, the first moving member 17 is at the first open position, the second moving member 18 is at the second open position, the first moving member 17 is at the first closed position, and the second moving member 18 is at the second closed position. However, the first moving member 17 may be at the first open position, the second moving member 18 may be at the second closed position, the first moving member 17 may be at the first closed position, and the second moving member 18 may be at the second open position. For example, FIG. 22 is a side view of the electromagnetic relay 1 according to the twelfth modification. As shown in FIG. 22, the auxiliary movable terminal 63 may be arranged in the first moving direction (Y1) with respect to the auxiliary fixed terminal 61.

Industrial Applicability

[0085] According to the present invention, the influence of the main contact portion on the operation of the auxiliary contact portion is reduced, and the increase in size of the electromagnetic relay is suppressed.

Explanation of Reference Numerals

[0086] 2: Case, 3: Base, 4: Main contact portion, 5: Coil portion, 6: First fixed terminal, 7: Second fixed terminal, 8: Auxiliary contact portion, 11: First fixed contact, 12: Second fixed contact, 15: First movable contact piece, 17: First moving member, 18: Second moving member, 21: First movable contact, 22: Second movable contact, 31: Coil, 32: Spool, 33: Movable iron core, 61: Auxiliary fixed terminal, 62: Auxiliary fixed contact, 63: Auxiliary movable terminal, 64: Auxiliary movable contact, 68: First contact portion, 69: Second contact portion, 70: Third contact portion, 74 - 77: Protrusion, 78: First rib, 79: Second rib, 83: Insulating wall

Claims

1. A base, a first fixed terminal supported by the base, a first fixed contact connected to the first fixed terminal, a second fixed terminal supported by the base, a second fixed contact connected to the second fixed terminal, a movable contact piece extending in the lateral direction, a first movable contact connected to the movable contact piece, a second movable contact connected to the movable contact piece, and a first moving member that holds the movable contact piece at a position between the first movable contact and the second movable contact and is movable in a moving direction perpendicular to the lateral direction, where the first movable contact contacts the first fixed contact and the second movable contact contacts the second fixed contact, and a main contact portion supported by the base in a first support direction perpendicular to the lateral direction and the moving direction, a coil, a spool including a hole extending in the moving direction around which the coil is wound, and a movable iron core disposed in the hole of the spool and connected to the first moving member, and a coil portion supported by the base in the first support direction, an auxiliary fixed terminal electrically insulated from the first fixed terminal and the second fixed terminal, an auxiliary fixed contact connected to the auxiliary fixed terminal, an auxiliary movable terminal electrically insulated from the movable contact piece, and an auxiliary movable contact connected to the auxiliary movable terminal, and an auxiliary contact portion disposed on the side opposite to the main contact portion with respect to the coil portion in the moving direction of the first moving member, a second moving member that is movable between a second closed position where the auxiliary movable contact contacts the auxiliary fixed contact and a second open position where the auxiliary movable contact separates from the auxiliary fixed contact and moves in the moving direction in conjunction with the first moving member, An electromagnetic relay comprising the above components.

2. The first movable contact, the second movable contact, and the auxiliary movable contact are movable in the moving direction. The electromagnetic relay according to Claim 1.

3. The moving direction includes a first moving direction from the main contact portion toward the coil portion and a second moving direction opposite to the first moving direction, The coil portion further includes a fixed iron core disposed opposite to the movable iron core, The movable iron core is disposed in the second moving direction with respect to the fixed iron core, The first moving member moves from the first open position to the first closed position by moving in the first moving direction. The electromagnetic relay according to claim 1.

4. The second moving member extends through a position in a second supporting direction opposite to the first supporting direction with respect to the coil portion. The electromagnetic relay according to claim 1.

5. The second moving member extends through the position in the lateral direction with respect to the coil portion. The electromagnetic relay according to claim 1.

6. The second moving member extends through the hole of the spool. The electromagnetic relay according to claim 1.

7. Further comprising a case attached to the base and covering the coil portion. The second moving member includes a protrusion protruding toward the case. The electromagnetic relay according to claim 1.

8. Further comprising a case attached to the base and covering the coil portion. The lateral direction includes a first lateral direction and a second lateral direction opposite to the first lateral direction. The case is a first rib protruding from the inner surface of the case and arranged in the first lateral direction with respect to the second moving member; a second rib protruding from the inner surface of the case and arranged in the second lateral direction with respect to the second moving member; including The electromagnetic relay according to claim 1.

9. When the first moving member is in the first open position, the second moving member is in contact with the auxiliary movable terminal. The electromagnetic relay according to claim 1.

10. The second moving member is a first contact portion arranged on the side opposite to the auxiliary fixed contact with respect to the auxiliary movable terminal in the moving direction and in contact with the auxiliary movable terminal; a second contact portion arranged on the same side as the auxiliary fixed contact with respect to the auxiliary movable terminal in the moving direction and in contact with the auxiliary movable terminal; including The electromagnetic relay according to claim 1.

11. The second contact portion is arranged offset in the lateral direction with respect to the auxiliary movable contact. The electromagnetic relay according to claim 10.

12. The second moving member further includes a third contact portion arranged on the same side as the auxiliary fixed contact with respect to the auxiliary movable terminal in the moving direction and in contact with the auxiliary movable terminal. The first contact portion is arranged between the second contact portion and the third contact portion in the lateral direction. The electromagnetic relay according to claim 10.

13. Further comprising an insulating wall arranged between the auxiliary contact portion and the coil portion. The electromagnetic relay according to claim 1.

14. When the first moving member is in the first open position, the second moving member is located at the second open position. The first moving member is at the first closed position, and the second moving member is at the second closed position. The electromagnetic relay according to claim 1.

15. The first moving member is at the first open position, and the second moving member is at the second closed position. The first moving member is at the first closed position, and the second moving member is at the second open position. The electromagnetic relay according to claim 1.

16. The first fixed terminal, the second fixed terminal, the auxiliary fixed terminal, and the auxiliary movable terminal protrude outward from the base in the same direction of the electromagnetic relay. The electromagnetic relay according to claim 1.

Images