JP6897409B2 - Electromagnetic relay - Google Patents

Description

The present invention relates to an electromagnetic relay.

The electromagnetic relay disclosed in Patent Document 1 includes a rectangular box-shaped resin housing having an accommodating portion inside, two fixed contact side terminals fixed to the housing, and two movable contact side terminals. There is. The accommodating portion of this electromagnetic relay includes two fixed contact portions provided on each fixed contact side terminal, two movable contact pieces provided on each movable contact side terminal, and each movable contact piece provided on each movable contact piece. Two movable contact parts arranged so as to face the fixed contact part, an electromagnet part whose polarity is reversed depending on the direction of the supplied current, and one rotation that rotates in a different direction depending on the polarity of the electromagnet part. It includes a block and two movable members that connect the rotating block and each movable contact piece.

In the electromagnetic relay, when the rotating block rotates, each movable member is moved to elastically deform each movable contact piece so that the movable contact portion is brought into contact with or separated from the opposite fixed contact portion. It has become. Further, the rotating block is composed of a rectangular parallelepiped housing in which a permanent magnet is housed and two rectangular plate-shaped iron pieces arranged so as to sandwich the housing. One of the two iron pieces has an arm portion extending in the longitudinal direction of the iron piece from the tip portion in the longitudinal direction of the iron piece.

US2009 / 0033446A1

In the electromagnetic relay, each movable member is provided with a locking hole for locking the arm portion of the iron piece, and by locking the arm portion of the iron piece with the locking hole of the movable member, the rotating block and each Since the movable members are connected to each other, the positions of the movable members are not sufficiently regulated with respect to the extending direction of the arm portion of the iron piece of the rotating block. Therefore, the operation of each movable member due to the rotation of the rotating block is not stable, for example, the movable contact piece cannot be sufficiently elastically deformed, or each movable member is moved to another member. The resin debris generated in contact with the movable contact part causes poor contact between each movable contact part and the corresponding fixed contact part, and the contact reliability between each movable contact part and the corresponding fixed contact part is lowered. There is a risk of

Therefore, an object of the present invention is to provide an electromagnetic relay capable of improving contact reliability between a fixed contact portion and a movable contact portion.

The electromagnetic relay according to one aspect of the present invention is
A box-shaped insulating housing with a housing inside,
A plate-shaped fixed contact side terminal that is fixed to the housing, extends from the outside of the housing to the housing portion, and has a fixed contact portion located in the housing portion.
A plate-shaped movable contact side terminal that is fixed to the housing, extends from the outside of the housing to the housing portion, and is electrically arranged independently of the fixed contact side terminal.
It is arranged in the accommodating portion and is electrically connected to the movable contact side terminal, and has a movable contact portion facing the fixed contact portion, and the movable contact portion contacts and disengages the fixed contact portion. With a movable contact piece that elastically deforms as much as possible,
An electromagnet unit that is arranged in the housing unit and can supply current in different directions,
The movable contact portion is rotatably arranged in the accommodating portion around a rotation axis extending in a direction intersecting the contact / separation direction in which the movable contact portion contacts or opens, and is supplied to the electromagnet portion. A rotating block that rotates in different directions with respect to the housing according to the direction of the electric current,
The movable contact portion is arranged in the accommodating portion and is connected to the movable contact piece and the rotating block, and moves according to the rotation direction of the rotating block to elastically deform the movable contact piece. Is provided with a movable member for contacting or releasing the fixed contact portion.
The rotating block
It has an arm portion extending in a direction intersecting the contact / detachment direction and the extending direction of the rotation shaft to which the movable member is connected.
The arm
It has a groove portion that opens at one end in the extending direction of the rotating shaft and extends in the contacting / separating direction at the tip portion farther from the rotating shaft.
The movable member
A pair of wall portions, which are arranged on both sides of the tip portion of the arm portion in the contacting / separating direction and transmit the rotation of the rotating block to the movable member.
The pair of wall portions are provided at a connecting portion that connects one end of the rotating shaft in the extending direction and at the other end of the pair of wall portions in the extending direction of the rotating shaft. It has a pair of protrusions that project so as to face each other, and the connecting portion and the pair of protrusions are arranged so as to sandwich the arm portion in the extending direction of the rotation shaft. A connecting portion that connects the arm portion and the movable member,
A position regulating unit provided at the end of the pair of wall portions on the tip side of the arm portion in the extending direction and arranged in the groove portion to regulate the position of the movable member in the extending direction of the arm portion. And have.

According to the electromagnetic relay of the above aspect, a pair of wall portions and a pair of walls, in which movable members are arranged on both sides of the tip portion of the arm portion in the contact / detachment direction to transmit the rotation of the rotating block to the movable member, respectively. A pair of connecting portions that connect one end of the rotating shaft of the portion in the extending direction and a pair of wall portions that are provided at the other end of the rotating shaft in the extending direction and project so as to face each other. The position of the arm portion of the movable member in the extending direction is provided at the end portion of the pair of wall portions on the tip end side in the extending direction and arranged in the groove portion. It has a position regulation department that regulates. That is, since the movable member is position-regulated by the position-regulating portion with respect to the extending direction of the arm portion of the rotating block, the stability of the operation of the movable member accompanying the rotation of the rotating block can be improved. .. As a result, the contact reliability between the fixed contact portion and the movable contact portion can be improved.

The perspective view of the electromagnetic relay of one Embodiment of this invention. The plan view of the electromagnetic relay of FIG. 1 with the cover removed. The plan view for demonstrating the drive unit of the electromagnetic relay of FIG. FIG. 3 is a perspective view of a rotating block of the electromagnetic relay of FIG. An enlarged side view of the periphery of the first movable member of the electromagnetic relay of FIG. 1. An enlarged bottom view of the periphery of the first movable member of the electromagnetic relay of FIG. 1.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, terms indicating a specific direction or position (for example, terms including "top", "bottom", "right", and "left") are used as necessary, but the use of these terms is used. Is for facilitating the understanding of the invention with reference to the drawings, and the meaning of those terms does not limit the technical scope of the present invention. In addition, the following description is merely an example and is not intended to limit the present invention, its application, or its use. Furthermore, the drawings are schematic, and the ratio of each dimension does not always match the actual one.

As shown in FIG. 1, the electromagnetic relay 1 according to the embodiment of the present invention includes a box-shaped insulating housing 10, a first fixed contact side terminal 20 fixed to the housing 10, and a first movable contact side, respectively. It includes a terminal 30, a second fixed contact side terminal 40, and a second movable contact side terminal 50.

The first fixed contact side terminal 20, the first movable contact side terminal 30, the second fixed contact side terminal 40, and the second movable contact side terminal 50 are substantially L-shaped rectangular plates in which the intermediate portions in the longitudinal direction are bent. Shaped and conductive. Further, the second fixed contact side terminal 40 and the second movable contact side terminal 50 are arranged between the first fixed contact side terminal 20 and the first movable contact side terminal 30, and the first fixed contact side terminal 20 is arranged. , The first movable contact side terminal 30, the second fixed contact side terminal 40, and the outer end of the housing 10 of the second movable contact side terminal 50 are arranged substantially in a straight line.

As shown in FIG. 1, the housing 10 is composed of a substantially rectangular box-shaped base 11 and a substantially rectangular plate-shaped cover 12, and as shown in FIG. 2, has an accommodating portion 13 inside the housing 10. That is, the accommodating portion 13 is covered with the base 11 and the cover 12.

As shown in FIG. 2, the first fixed contact side terminal 20 is attached to the first side wall 111 of the first side wall 111 and the second side wall 112 facing the longitudinal direction of the base 11 (that is, the left-right direction in FIG. 2). It is fixed and extends from the outside of the housing 10 to the accommodating portion 13.

Specifically, the first fixed contact side terminal 20 faces the outside of the housing 10 from the first side wall 111 of the base 11 to the outside of the housing 10 from the third side wall 113 to the fourth side wall 114 along the lateral direction of the base 11. The outer terminal 201 extending in the direction (that is, downward in FIG. 2) is connected to the end of the outer terminal 201 on the first side wall 111 side, and the inside of the housing 10 is formed in the longitudinal direction of the base 11 from the first side wall 111 of the base 11. It is composed of an inner terminal 202 extending along the second side wall 112 toward the second side wall 112. The first fixed contact portion 21 is fixed to the surface of the inner terminal 202 facing the fourth side wall 114. The first fixed contact portion 21 is arranged near the first side wall 111 of the base 11.

As shown in FIG. 2, the first movable contact side terminal 30 is fixed to the fourth side wall 114 side of the first fixed contact side terminal 20 of the second side wall 112 of the base 11, and is fixed to the first fixed contact side terminal 20. On the other hand, it extends from the outside of the housing 10 to the accommodating portion 13 in an electrically independent state.

Specifically, the first movable contact side terminal 30 is an outer terminal extending from the second side wall 112 of the base 11 to the lateral side of the base 11 from the third side wall 113 to the fourth side wall 114 on the outside of the housing 10. An inner terminal connected to the outer terminal 301 on the second side wall 112 side and extending from the second side wall 112 of the base 11 toward the first side wall 111 along the longitudinal direction of the base 11. It is composed of 302.

As shown in FIG. 2, a first movable contact piece 31 is provided at an end 303 on the first side wall 111 side of the inner terminal 302 of the first movable contact side terminal 30. The first movable contact piece 31 is arranged in the accommodating portion 13 and extends from the end portion 303 of the first movable contact side terminal 30 toward the first fixed contact side terminal 20. Further, the first movable contact piece 31 is composed of, for example, a plate-like laminated body in which three conductive and elastically deformable rectangular plate members are stacked in the plate thickness direction, and one end portion in the longitudinal direction thereof. The plate surface is fixed in contact with the plate surface of the end 303 of the inner terminal 302 of the first movable contact side terminal 30. The first movable contact portion 32 is fixed to the surface of the other end of the first movable contact piece 31 in the longitudinal direction facing the third side wall 113 of the base 11. The first movable contact portion 32 is arranged so as to face the first fixed contact portion 21, and the first movable contact piece 31 is elastically deformed so that the base 11 is shorter than the first fixed contact portion 21. It is designed to come into contact with or release along the hand direction.

It should be noted that between the first movable contact portion 32 of the first movable contact piece 31 and the end portion 303 of the first movable contact side terminal 30, a curve protruding in a U shape toward the third side wall 113 of the base 11. A portion 33 is provided. The curved portion 33 can absorb and alleviate the amount of bending of the first movable contact piece 31 when the first movable contact piece 31 is elastically deformed, and can ensure smooth operation characteristics.

As shown in FIG. 2, the second fixed contact side terminal 40 is fixed to the fourth side wall 114 side of the first movable contact side terminal 30 of the second side wall 112 of the base 11, and is fixed to the first fixed contact side terminal 20 and the first fixed contact side terminal 20. It extends from the outside of the housing 10 to the accommodating portion 13 in a state of being electrically independent of the first movable contact side terminal 30.

Specifically, the second fixed contact side terminal 40 is an outer terminal extending from the second side wall 112 of the base 11 to the lateral side of the base 11 from the third side wall 113 to the fourth side wall 114 on the outside of the housing 10. An inner terminal connected to the outer terminal 401 on the second side wall 112 side and extending from the second side wall 112 of the base 11 toward the first side wall 111 along the longitudinal direction of the base 11. It is composed of 402. The second fixed contact portion 41 is fixed to the surface of the inner terminal 402 facing the third side wall 113. The second fixed contact portion 41 is arranged near the second side wall 112 of the base 11.

As shown in FIG. 2, the second movable contact side terminal 50 is fixed to the end portion of the fourth side wall 114 of the base 11 on the first side wall 111 side, and the first fixed contact side terminal 20 and the first movable contact side terminal. It extends from the outside of the housing 10 to the accommodating portion 13 in a state of being electrically independent of the 30 and the second fixed contact side terminal 40.

Specifically, the first movable contact side terminal 30 includes an outer terminal 501 extending from the fourth side wall 114 of the base 11 in a direction away from the third side wall 113 along the lateral direction of the base 11 and an outer terminal. An inner terminal 502 connected to the end of the 501 on the side of the fourth side wall 112 and extending the inside of the housing 10 from the fourth side wall 114 in the longitudinal direction of the base 11 from the first side wall 111 to the second side wall 112. It is composed of.

As shown in FIG. 2, a second movable contact piece 51 is provided at the end 503 on the second side wall 111 side of the inner terminal 502 of the second movable contact side terminal 50. The second movable contact piece 51 is arranged in the accommodating portion 13 adjacent to the first movable contact piece 31 in the plate thickness direction of the first movable contact piece 31 (that is, in the lateral direction of the base 11), and is a second movable contact. It extends from the end 503 of the side terminal 50 toward the second fixed contact side terminal 40. Further, as an example, the second movable contact piece 51 is a plate-like laminated body in which three conductive and elastically deformable rectangular plate members are laminated in the plate thickness direction, similarly to the first movable contact piece 31. The plate surface of one end portion in the longitudinal direction thereof is fixed in contact with the plate surface of the end portion 503 of the inner terminal 502 of the second movable contact side terminal 50. The second movable contact portion 52 is fixed to the surface of the other end of the second movable contact piece 51 in the longitudinal direction facing the fourth side wall 114 of the base 11. The second movable contact portion 52 is arranged so as to face the second fixed contact portion 41, and the second movable contact piece 51 is elastically deformed so that the base 11 is shorter than the second fixed contact portion 41. It is designed to come into contact with or release along the hand direction.

A U-shaped curve protruding toward the fourth side wall 114 of the base 11 between the second movable contact portion 52 of the second movable contact piece 51 and the end portion 503 of the second movable contact side terminal 50. A unit 53 is provided. The curved portion 53 can absorb and alleviate the amount of bending of the second movable contact piece 51 when the second movable contact piece 51 is elastically deformed, and can ensure smooth operation characteristics.

Further, as shown in FIG. 2, the electromagnetic relay 1 includes a drive unit 2 having an electromagnet portion 60, a rotating block 70, an insulating first movable member 90, and an insulating second movable member 100. There is. The drive unit 2 is housed in a housing portion 13 of the housing 10.

As shown in FIG. 2, the electromagnet portion 60 is arranged at a position adjacent to the second side wall 112 of the accommodating portion 13. The electromagnet portion 60 is formed on the outer surface of the coil 61 from both ends of the coil 61 wound around the winding center axis CL extending in the longitudinal direction of the base 11 and the electromagnet portion 60 extending in the winding center axis CL in the axial direction. It has a plate-shaped first yoke 62 and a plate-shaped second yoke 63 extending along the plate-shaped first yoke 62, respectively. The first yoke 62 and the second yoke 63 are arranged between the first movable contact piece 31 and the second movable contact piece 51 and the electromagnet portion 60. Although not shown, the electromagnet unit 60 is provided with a coil terminal, and currents in two different directions can be supplied to the electromagnet unit 60 via the coil terminal.

As shown in FIG. 3, the first yoke 62 is directed from the end portion of the electromagnet portion 60 on the first side wall 111 side in the axial direction from the third side wall 113 to the fourth side wall 114 along the first side wall 111 of the base 11. From the connecting portion 621 extending in the direction (that is, downward in FIG. 3) and the tip portion of the connecting portion 621 farther from the electromagnet portion 60, the first side wall 111 to the second side wall 111 to the second along the extending direction of the winding central axis CL. It is composed of a suction portion 622 extending in a direction toward the side wall 112 (that is, facing right in FIG. 3).

As shown in FIG. 3, the second yoke 63 is directed from the end portion of the electromagnet portion 60 on the second side wall 112 side in the axial direction from the third side wall 113 to the fourth side wall 114 along the second side wall 112 of the base 11. A direction extending from the connecting portion 631 extending in the direction and the tip portion of the connecting portion 631 far from the electromagnet portion 60 toward the first side wall 111 from the second side wall 112 along the extending direction of the winding central axis CL (that is,). It is composed of a suction portion 632 extending in the left direction in FIG. 3).

The suction portion 622 of the first yoke 62 and the suction portion 632 of the second yoke 63 extend the winding central axis CL in a plan view along the height direction of the base 11 (that is, the paper surface penetration direction in FIG. 3). The center lines extending along the current direction are arranged so as to coincide with each other. That is, the tip surface of the suction portion 622 of the first yoke 62 and the tip surface of the suction portion 632 of the second yoke 63 face each other, and a rotation block arrangement space in which the rotation block 70 can be arranged between them. 64 is provided.

Specifically, as shown in FIG. 3, the first yoke 62 has a first facing surface 623, and the second yoke 63 has a second facing surface 633. A rotating block arrangement space 64 is provided between the first facing surface 623 and the second facing surface 633.

Further, as shown in FIG. 2, the suction portion 622 of the first yoke 62 and the suction portion 632 of the second yoke 63 are provided with protrusions 625 and 635 protruding in the height direction of the base 11, respectively. The protrusions 625 and 635 can be fitted into the through holes 661 and 662 of the fixing plate 66, which will be described later.

As shown in FIG. 3, the rotating block 70 can rotate around the rotating shaft 71 extending in the height direction of the base 11 with respect to the base 11 of the housing 10, and the rotating block arrangement space 64 of the accommodating portion 13 Is arranged in, and rotates in different directions with respect to the base 11 of the housing 10 according to the direction of the electric current supplied to the electromagnet unit 60. Specifically, the rotating block 70 faces the block housing 72 (shown in FIG. 2), the permanent magnet 73 provided inside the block housing 72, and the block housing 72 so as to face each other with the permanent magnet 73 interposed therebetween. It has a fixed plate-shaped first iron piece 74 and a plate-shaped second iron piece 75. Further, a first arm portion 721 extending toward the first side wall 111 of the base 11 is provided at an end portion of the block housing 72 on the fourth side wall 114 side and the first side wall 111 side, and the fourth side wall of the block housing 72. A second arm portion 722 extending toward the second side wall 112 of the base 11 is provided at the end on the 114 side and the second side wall 112 side.
ing.

The block housing 72 is made of resin as an example, and as shown in FIG. 4, has a main body portion 723 that covers a permanent magnet 73, a part of the first iron piece 74, and a part of the second iron piece 75, and the main body portion. The base 11 of the 723 has rotating shaft portions 76 protruding from both ends in the height direction (that is, the vertical direction in FIG. 4). The rotating shaft portion 76 extends along the height direction of the base 11, and the center line in the extending direction constitutes the rotating shaft 71 of the rotating block 70. One end of the rotating shaft portion 76 in the extending direction of the rotating shaft portion 76 is rotatably supported by the base 11 of the housing 10. Further, the other end of the rotating shaft portion 76 in the extending direction of the rotating shaft portion 76 is rotatably supported by the shaft hole portion 663 of the fixing plate 66 described later.

As shown in FIG. 4, the first arm portion 721 and the second arm portion 722 have one end portion in the extending direction of the rotation shaft 71 at the tip portion farther from the rotation shaft 71 (that is, FIG. 4). A groove portion 77 is provided at the upper end portion of the above portion) and extends in the contact / separation direction (that is, the X direction in FIG. 4). Further, at the tip of each arm portion 721, 722, closer to the rotation shaft 71 than the groove portion 77, and at the other end portion in the extending direction of the rotation shaft 71 (that is, the lower end portion in FIG. 4). A recess is provided to detachably lock the pair of protrusions 922 of the connecting portion 92 of the first movable member 90 and the second movable member 100, which will be described later. Further, on both side surfaces in the X direction at the tip portions of the arm portions 721 and 722, a pair of curved surfaces 79 projecting toward the pair of wall portions 91 of the movable members 90 and 100, which will be described later, are provided. Each of the pair of curved surfaces 79 is in contact with each of the pair of wall portions 91 facing each other, and each of the arm portions 721 and 722 is swingably arranged.

The first iron piece 74 has a first end portion 741 protruding from the permanent magnet 73 toward the first yoke 63, and a second end portion 742 protruding from the permanent magnet 73 toward the second yoke 63. , The suction portion 622 of the first yoke 62 and the suction portion 632 of the second yoke 63 are arranged on the third side wall 113 side.

The second iron piece 75 has a first end portion 751 protruding from the permanent magnet 73 toward the first yoke 63, and a second end portion 752 protruding from the permanent magnet 73 toward the second yoke 63. , The suction portion 622 of the first yoke 62 and the suction portion 632 of the second yoke 63 are arranged on the fourth side wall 114 side.

A first yoke 62 is arranged between the first ends 741 and 751 of the first iron piece 74 and the second iron piece 75, and the first end portions 741 and 751 of either the first iron piece 74 and the second iron piece 75 are arranged. Is configured to come into contact with the first yoke 62 in the direction of rotation of the rotation block 70. Further, a second yoke 63 is arranged between the second end portions 742 and 752 of the first iron piece 74 and the second iron piece 75, and the second end portion 742 of any one of the first iron piece 74 and the second iron piece 75 is arranged. , 752 are configured to come into contact with the second yoke 63 in the rotation direction of the rotation block 70.

The fixing plate 66 has a substantially rectangular plate shape, and has through holes 661 and 662 penetrating in the plate thickness direction at both ends in the longitudinal direction, respectively. The through holes 661 and 662 are fitted into the protrusions 625 of the first yoke 62 and the protrusions 635 of the second yoke 63, respectively. Further, in the center of the fixing plate 66, a shaft hole portion 663 into which the rotating shaft portion 76 of the block housing 72 constituting the rotating shaft 71 of the rotating block 70 can be inserted is provided.

As shown in FIG. 2, the first movable member 90 has a substantially rectangular parallelepiped shape extending along the first side wall 111 of the base 11, and the end portion on the third side wall 113 side in the longitudinal direction thereof (that is, FIG. 2). The upper end portion) is connected to the first arm portion 721 of the rotating block 70, and the fourth side wall 114 side in the longitudinal direction (that is, the lower end portion in FIG. 2) is connected to the first movable contact piece 31. The first movable member 90 moves according to the rotation direction of the rotating block 70 to elastically deform the first movable contact piece 31 to bring the first movable contact portion 32 into contact with the first fixed contact portion 21. Or let it open.

Specifically, in the first movable member 90, the first movable contact portion 32 contacts or opens the rotation of the rotation block 70 with respect to the first fixed contact portion 21 (that is, the short side of the base 11). It can be converted into a linear motion in the direction (vertical direction in FIG. 2), and is connected to the tip of the first arm portion 721 of the rotating block 70 while allowing the rotating block 70 to rotate. , The first movable contact piece 31 is connected to the end portion on the first side wall 111 side (that is, the left end portion in FIG. 2) in the extending direction. That is, the first movable member 90 moves in the contacting / separating direction due to the rotation of the rotating block 70, and the end portion on the first side wall 111 side in the extending direction of the first movable contact piece 31 is the first movable contact portion. The 32 is moved in the contact / separation direction in which the 32 contacts or opens the first fixed contact portion 21.

More specifically, as shown in FIGS. 5 and 6, the first movable member 90 has a pair of wall portions 91, a connecting portion 92, and a position restricting portion 93.

The pair of wall portions 91 are arranged on both sides of the tip portion of the first arm portion 721 in the contact / detachment direction (that is, the left-right direction of FIGS. 5 and 6), and the first movable member 90 is arranged with respect to the contact / detachment direction. While restricting the position, the rotation of the rotation block 70 is transmitted to the first movable member 90.

The connecting portion 92 is a connecting portion 921 that connects one end portion (that is, the upper end portion in FIG. 5) of the rotating shaft 71 of the pair of wall portions 91 in the extending direction, and the rotating shaft of the pair of wall portions 91. It has a pair of protrusions 922 that are provided at the other end of 71 in the extending direction (that is, the lower end of FIG. 5) and project so as to face each other. The connecting portion 921 is arranged on one side of the rotating shaft 71 of the first arm portion 721 in the extending direction, and the pair of protrusions 922 is located on the other side of the rotating shaft 71 of the first arm portion 721 in the extending direction. It is arranged in the recess 78 provided in. That is, the connecting portion 921 and the pair of protrusions 922 are arranged so as to sandwich the first arm portion 721 in the extending direction of the rotating shaft 71, and the first movable member 90 is arranged with respect to the extending direction of the rotating shaft 71. The first arm portion 721 and the first movable member 90 are connected while the position is restricted.

The position restricting portion 93 has a plate shape and is provided at the end portion of the pair of wall portions 91 on the tip end side in the extending direction of the first arm portion 721 (that is, the upper end portion in FIG. 6), and the first arm portion 93 is provided. Arranged in the groove portion 77 of the portion 721, the position of the first arm portion 721 of the first movable member 90 in the extending direction (vertical direction in FIG. 6) is restricted. The position regulating portion 93 extends from the connecting portion 921 of the connecting portion 92 toward the pair of protrusions 922 in the extending direction of the rotating shaft 71, and the tip portion 931 thereof extends from the connecting portion 921 toward the pair of protrusions 922. It is located between 922 and.

The pair of wall portions 91, the connecting portion 92, and the position regulating portion 93 of the first movable member 90 are integrally formed, and a pair of protrusions from the tip portion 931 of the position regulating portion 93 in the pair of wall portions 91. The portions 911 up to the portion 922 can be elastically deformed in the directions away from each other. As a result, the first movable member 90 can be detachably connected to the first arm portion 721.

As shown in FIG. 2, the second movable member 100 has a substantially rectangular parallelepiped shape extending along the second side wall 112 of the base 11, and the end portion on the third side wall 113 side in the longitudinal direction thereof (that is, FIG. 2). The upper end portion) is connected to the second arm portion 722 of the rotating block 70, and the fourth side wall 114 side in the longitudinal direction (that is, the lower end portion in FIG. 2) is connected to the second movable contact piece 51. The second movable member 100 moves according to the rotation direction of the rotating block 70 to elastically deform the second movable contact piece 51 to bring the second movable contact portion 52 into contact with the second fixed contact portion 41. Or let it open.

Specifically, the second movable member 100 has a contact / separation direction in which the second movable contact portion 52 contacts or opens the rotation of the rotation block 70 with respect to the second fixed contact portion 41 (that is, the vertical direction in FIG. 2). ), And is connected to the tip of the second arm 722 of the rotating block 70 while allowing the rotating block 70 to rotate, and the second movable contact piece 51. It is connected to the end on the second side wall 112 side in the extending direction (that is, the right end in FIG. 2). That is, the second movable member 100 moves in the contacting / separating direction due to the rotation of the rotating block 70, and the end portion of the second movable contact piece 51 on the second side wall 112 side in the extending direction is the second movable contact portion. 52 is moved in the contacting / separating direction in which the second fixed contact portion 41 is brought into contact with or separated from the second fixed contact portion 41.

The second movable member 100 has the same configuration as the first movable member 90. Therefore, the description of the second movable member 100 will be omitted with reference to the description of the first movable member 90.

In the electromagnetic relay 1, the operating state shown in FIG. 2 (that is, the first end portion 751 of the second iron piece 75 of the rotating block 70 comes into contact with the suction portion 622 of the first yoke 62, and the second iron piece 75 of the rotating block 70 is in contact with the suction portion 622. The second end portion 742 of the 1 iron piece 74 comes into contact with the suction portion 632 of the second yoke 63, the first movable contact portion 32 and the first fixed contact portion 21 come into contact with each other, and the second movable contact portion 52 and the second movable contact portion 52 and the second 2 A current in a predetermined direction (for example, the A direction in FIG. 2) is supplied to the electromagnet portion 60 of the electromagnetic relay 1 in contact with the fixed contact portion 41) to rotate the rotation block 70 of the rotation block 70. Rotate the shaft 71 clockwise when viewed from the extending direction. Then, as the rotation block 70 rotates, the arm portions 721 and 722 also rotate clockwise to move the first movable member 90 toward the fourth side wall 114 of the base 11, and the first movable contact portion. The 32 is separated from the first fixed contact portion 21, the second movable member 100 is moved toward the third side wall 113 of the base 11, and the second movable contact portion 52 is separated from the second fixed contact portion 41. Let me. As a result, the electromagnetic relay 1 is returned from the operating state (that is, the first end portion 741 of the first iron piece 74 of the rotating block 70 comes into contact with the suction portion 622 of the first yoke 62, and the rotating block 70 The second end portion 752 of the second iron piece 75 comes into contact with the suction portion 632 of the second yoke 63, the first movable contact portion 32 is separated from the first fixed contact portion 21, and the second movable contact portion 52 is the second. 2 The state of open contact with the fixed contact portion 41).

In the operating electromagnetic relay 1, the first movable contact piece 31 is arranged on one side (for example, the left side in FIG. 2) of the first movable contact piece 31 intersecting the first movable contact piece 31 in the extending direction. The first fixed contact side terminal 20 or the first movable contact side terminal 30 (here, the first fixed contact side terminal 20) is a terminal to which a current is supplied. Further, the second fixed contact side terminal 40 or the second movable contact arranged on the other side (for example, the right side in FIG. 2) of the first movable contact piece 31 in the extending direction with respect to the second movable contact piece 51. The side terminal 50 (here, the second fixed contact side terminal 40) is a terminal to which a current is supplied. That is, in the electromagnetic relay 1, when energized, a conduction path composed of a first fixed contact side terminal 20, a first movable contact side terminal 30, and a first movable contact piece 31 and a second fixed contact side terminal. Currents flow in opposite directions to the conduction path including the 40, the second movable contact side terminal 50, and the second movable contact piece 51.

Further, a current in a direction different from the predetermined direction (for example, the B direction in FIG. 2) is supplied to the electromagnet portion 60 of the electromagnetic relay 1 in the restored state, and the rotating block 70 is moved to the rotating shaft 71 of the rotating block 70. Rotate counterclockwise when viewed from the extension direction. Then, as the rotation block 70 rotates, the arm portions 721 and 722 also rotate counterclockwise, and the first movable member 90 is moved toward the third side wall 113 of the base 11, and the first movable contact point is reached. The portion 32 is brought into contact with the first fixed contact portion 21, the second movable member 100 is moved toward the fourth side wall 114 of the base 11, and the second movable contact portion 52 is brought into the second fixed contact portion 41. Make contact with it.

In the electromagnetic relay 1, the first movable member 90 is position-regulated by the position regulating unit 93 with respect to the extending direction of the first arm portion 721 of the rotation block 70, and the second movable member 100 is positioned by the position regulating unit 93. Because the position is restricted with respect to the extending direction of the second arm portion 722 of the rotating block 70, the stability of the operation of the first movable member 90 and the second movable member 100 accompanying the rotation of the rotating block 70. Can be enhanced. As a result, for example, the movable contact pieces 31 and 51 cannot be sufficiently elastically deformed, or the movable members 90 and 100 come into contact with other members during movement and are movable due to resin scraps generated. Preventing poor contact between the contact portions 32 and 52 and the corresponding fixed contact portions 21 and 41, contact reliability between the first fixed contact portion 21 and the first movable contact portion 32, and , The contact reliability between the second fixed contact portion 41 and the second movable contact portion 52 can be improved.

Further, the pair of wall portions 91 can be elastically deformed in the directions away from each other, and are closer to the rotation shaft 71 than the groove portion 77 at the tip of the first arm portion 721 and the second arm portion 722, and the rotation shaft. A recess 78 is provided at the other end of the 71 in the extending direction to detachably lock the pair of protrusions 922. As a result, the first movable member 90 can be detachably connected to the first arm portion 721, and the second movable member 100 can be detachably connected to the second arm portion 722, so that the electromagnetic relay 1 can be assembled. It becomes easy and the electromagnetic relay 1 with high productivity can be realized.

Further, the first arm portion 721 and the second arm portion 722 are provided on both sides of the tip portion in the contact / separation direction, respectively, and have a pair of curved surfaces 79 projecting toward the pair of wall portions 91, and have a pair of curved surfaces. Each of the surfaces 79 is in contact with each of the pair of wall portions 91 facing each other, and the first arm portion 721 and the second arm portion 722 are swingably arranged. As a result, the rotation of the rotation block 70 can be smoothly converted into a linear motion in the contact / separation direction.

In the electromagnetic relay 1, the circuit composed of the first fixed contact side terminal 20, the first movable contact side terminal 30, and the first movable contact piece 31, and the second fixed contact side terminal 40 and the second movable A circuit composed of a contact-side terminal 50 and a second movable contact piece 51 is provided, but the present invention is not limited to this. The number of circuits may be at least one. That is, at least one set of the fixed contact side terminal, the movable contact side terminal, and the first movable contact piece may be provided.

Further, the recess 78 of each arm portion 721 and 722 can be omitted. That is, the arm portions 721 and 722 do not have to be detachable from the corresponding movable members 90 and 100.

Further, the curved surfaces 79 are provided on the arms 721 and 722, but the present invention is not limited to this. The curved surface 79 may be omitted or another configuration may be adopted as long as the rotation of the rotation block 70 can be converted into a linear motion in the contact / separation direction.

Although various embodiments of the present invention have been described in detail with reference to the drawings, finally, various aspects of the present invention will be described.

The electromagnetic relay according to the first aspect of the present invention is
A box-shaped insulating housing with a housing inside,
A plate-shaped fixed contact side terminal that is fixed to the housing, extends from the outside of the housing to the housing portion, and has a fixed contact portion located in the housing portion.
A plate-shaped movable contact side terminal that is fixed to the housing, extends from the outside of the housing to the housing portion, and is electrically arranged independently of the fixed contact side terminal.
It is arranged in the accommodating portion and is electrically connected to the movable contact side terminal, and has a movable contact portion facing the fixed contact portion, and the movable contact portion contacts and disengages the fixed contact portion. With a movable contact piece that elastically deforms as much as possible,
An electromagnet unit that is arranged in the housing unit and can supply current in different directions,
The movable contact portion is rotatably arranged in the accommodating portion around a rotation axis extending in a direction intersecting the contact / separation direction in which the movable contact portion contacts or opens, and is supplied to the electromagnet portion. A rotating block that rotates in different directions with respect to the housing according to the direction of the electric current,
The movable contact portion is arranged in the accommodating portion and is connected to the movable contact piece and the rotating block, and moves according to the rotation direction of the rotating block to elastically deform the movable contact piece. Is provided with a movable member for contacting or releasing the fixed contact portion.
The rotating block
It has an arm portion extending in a direction intersecting the contact / detachment direction and the extending direction of the rotation shaft to which the movable member is connected.
The arm
It has a groove portion that opens at one end in the extending direction of the rotating shaft and extends in the contacting / separating direction at the tip portion farther from the rotating shaft.
The movable member
A pair of wall portions, which are arranged on both sides of the tip portion of the arm portion in the contacting / separating direction and transmit the rotation of the rotating block to the movable member.
The pair of wall portions are provided at a connecting portion that connects one end of the rotating shaft in the extending direction and at the other end of the pair of wall portions in the extending direction of the rotating shaft. It has a pair of protrusions that project so as to face each other, and the connecting portion and the pair of protrusions are arranged so as to sandwich the arm portion in the extending direction of the rotation shaft. A connecting portion that connects the arm portion and the movable member,
A position regulating unit provided at the end of the pair of wall portions on the tip side of the arm portion in the extending direction and arranged in the groove portion to regulate the position of the movable member in the extending direction of the arm portion. And have.

According to the electromagnetic relay of the first aspect, since the movable member is position-regulated with respect to the extending direction of the arm portion of the rotating block by the position regulating portion, the operation of the movable member accompanying the rotation of the rotating block Can increase the stability of. As a result, the contact reliability between the fixed contact portion and the movable contact portion can be improved.

The electromagnetic relay according to the second aspect of the present invention is
The pair of wall portions can be elastically deformed in a direction away from each other.
A recess for detachably locking the pair of protrusions is provided at the other end of the arm portion closer to the rotation shaft than the groove portion of the tip portion and in the extending direction of the rotation shaft. Has been done.

According to the electromagnetic relay of the second aspect, since the movable member can be detachably connected to the arm portion, the electromagnetic relay can be easily assembled and a highly productive electromagnetic relay can be realized.

The electromagnetic relay according to the third aspect of the present invention is
The arm portion is provided on both sides of the tip portion in the contact / separation direction, and has a pair of curved surfaces protruding toward the pair of wall portions.
Each of the pair of curved surfaces is arranged so as to be able to swing the arm portion in contact with each of the pair of wall portions facing each other.

According to the electromagnetic relay of the third aspect, the rotation of the rotating block can be smoothly converted into a linear motion in the contact / separation direction.

By appropriately combining any of the various embodiments or modifications, the effects of each can be achieved. In addition, combinations of embodiments or examples or combinations of embodiments and examples are possible, and features in different embodiments or examples are also possible.

The electromagnetic relay of the present invention can be applied to, for example, a smart meter.

1 Electromagnetic relay 2 Drive unit 10 Housing 11 Base 111 1st side wall 112 2nd side wall 113 3rd side wall 114 4th side wall 12 Cover 13 Accommodating part 20 1st fixed contact side terminal 201 Outer terminal 202 Inner terminal 21 1st fixed contact part 30 1st movable contact side terminal 301 Outer terminal 302 Inner terminal 303 End 31 1st movable contact piece 32 1st movable contact part 33 Curved part 40 2nd fixed contact side terminal 401 Outer terminal 402 Inner terminal 41 2nd fixed contact part 50 Second movable contact side terminal 501 Outer terminal 502 Inner terminal 503 End 51 Second movable contact piece 52 Second movable contact 53 Curved part 60 Electromagnet part 61 Coil 62 First yoke 621 Connection part 622 Suction part 623 First facing Surface 63 Second yoke 631 Connection part 632 Suction part 633 Second facing surface 64 Rotating block arrangement space 66 Fixing plate 661, 662 Through hole 663 Shaft hole part 70 Rotating block 71 Rotating shaft 72 Block housing 721 First arm part 722 Second arm 723 Main body 73 Permanent magnet 74 First iron piece 741 First end 742 Second end 75 Second iron piece 751 First end 752 Second end 76 Rotating shaft 77 Groove 78 Recess 79 Curved Surface 90 First movable member 91 Wall part 92 Connection part 921 Connecting part 922 Protrusion part 93 Position regulation part 931 Tip part 100 Second movable member CL winding center axis

Claims (2)

A box-shaped insulating housing with a housing inside,
A plate-shaped fixed contact side terminal that is fixed to the housing, extends from the outside of the housing to the housing portion, and has a fixed contact portion located in the housing portion.
A plate-shaped movable contact side terminal that is fixed to the housing, extends from the outside of the housing to the housing portion, and is electrically arranged independently of the fixed contact side terminal.
It is arranged in the accommodating portion and is electrically connected to the movable contact side terminal, and has a movable contact portion facing the fixed contact portion, and the movable contact portion contacts and disengages the fixed contact portion. With a movable contact piece that elastically deforms as much as possible,
An electromagnet unit that is arranged in the housing unit and can supply current in different directions,
The movable contact portion is rotatably arranged in the accommodating portion around a rotation axis extending in a direction intersecting the contact / separation direction in which the movable contact portion contacts or opens, and is supplied to the electromagnet portion. A rotating block that rotates in different directions with respect to the housing according to the direction of the electric current,
The movable contact portion is arranged in the accommodating portion and is connected to the movable contact piece and the rotating block, and moves according to the rotation direction of the rotating block to elastically deform the movable contact piece. Is provided with a movable member for contacting or releasing the fixed contact portion.
The rotating block
It has an arm portion extending in a direction intersecting the contact / detachment direction and the extending direction of the rotation shaft to which the movable member is connected.
The arm
It has a groove portion that opens at one end in the extending direction of the rotating shaft and extends in the contacting / separating direction at the tip portion farther from the rotating shaft.
The movable member
A pair of wall portions, which are arranged on both sides of the tip portion of the arm portion in the contacting / separating direction and transmit the rotation of the rotating block to the movable member.
The pair of wall portions are provided at a connecting portion that connects one end of the rotating shaft in the extending direction and at the other end of the pair of wall portions in the extending direction of the rotating shaft. It has a pair of protrusions that project so as to face each other, and the connecting portion and the pair of protrusions are arranged so as to sandwich the arm portion in the extending direction of the rotation shaft. A connecting portion that connects the arm portion and the movable member,
A position regulating unit provided at the end of the pair of wall portions on the tip side of the arm portion in the extending direction and arranged in the groove portion to regulate the position of the movable member in the extending direction of the arm portion. It has a door,
The pair of wall portions can be elastically deformed in a direction away from each other.
A recess for detachably locking the pair of protrusions is provided at the other end of the arm portion closer to the rotation shaft than the groove portion of the tip portion and in the extending direction of the rotation shaft. is not that, electromagnetic relay. The arm portion is provided on both sides of the tip portion in the contact / separation direction, and has a pair of curved surfaces protruding toward the pair of wall portions.
The electromagnetic relay according to claim 1, wherein each of the pair of curved surfaces is arranged so as to be able to swing the arm portion in contact with each of the pair of wall portions facing each other.

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