JP4258361B2 - Electromagnetic relay - Google Patents

Description

  In the present invention, a movable contact piece provided with a movable contact and a fixed contact piece provided with a fixed contact are erected on a base, and the movable contact piece is rotated via a card that supports an upper end portion of the movable contact piece. Thus, the present invention relates to an electromagnetic relay that contacts and separates the movable contact from the fixed contact.

Conventionally, as an electromagnetic relay that opens and closes a contact by rotating the movable contact piece via a card that supports the upper end of the movable contact piece, for example, an electromagnetic that opens and closes a contact with a card that reciprocates through a movable block. There is a relay (see Patent Document 1).
European Patent Application Publication No. 1308976

  However, in the above-described electromagnetic relay, a current in the reverse direction flows through the contact surfaces facing each other as shown in FIG. 14A, so that an electromagnetic repulsive force as shown in FIG. 14B is generated. In particular, since the electromagnetic repulsive force is proportional to the square of the flowing current, for example, when an instantaneous overcurrent (at 1200 A for 0.5 seconds) flows, the electromagnetic repulsive force increases remarkably and the contact pressure decreases. Contact resistance increases and contacts are easily welded due to the generation of Joule heat. For this reason, when it is going to ensure desired contact pressure, it is necessary to enlarge the magnetic force of the electromagnet block which drives a movable block, and there exists a problem that an apparatus enlarges.

  In view of the above problems, an object of the present invention is to provide a small electromagnetic relay capable of supplying a large current.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, the electromagnetic relay according to the present invention has a movable contact piece provided with a movable contact and a fixed contact piece provided with a fixed contact standing on a base and supporting an upper end portion of the movable contact piece. An electromagnetic relay that rotates the movable contact piece via a card and contacts the movable contact with the fixed contact,
A fixed portion in which a first movable contact and a second movable contact are provided at an intermediate portion between the first movable divided piece and the second movable divided piece of the movable contact piece having a substantially U shape, respectively, and a first fixed contact is provided at the intermediate portion. A fixed split piece extends vertically downward through a connecting portion extending in the horizontal direction from the upper end portion of the contact piece, and a second fixed contact is provided at the lower end portion of the fixed split piece. Two movable contacts are configured to contact and separate from the first and second fixed contacts, respectively.

  According to the present invention, since the electromagnetic repulsive force is proportional to the square of the flowing current, the electromagnetic repulsive force is reduced by dividing the movable contact piece into the first and second movable divided pieces and diverting the current. it can. Furthermore, since the lower side of the fixed split piece provided with the second fixed contact is not opposed to the first movable split piece, no electromagnetic repulsive force is generated and the contact pressure is not reduced. For this reason, contact welding due to a decrease in contact pressure can be prevented without increasing the size of the electromagnet block.

As an embodiment of the present invention, a suction movable piece made of a magnetic material may be provided at a position facing the intermediate portion of the fixed split piece, of the opposing surface of the second movable split piece facing the fixed split piece, or In addition, a suction fixed piece made of a magnetic material may be provided in the back middle portion of the fixed split piece provided with the second fixed contact at the lower end.
According to the present embodiment, the suction movable piece is attracted to the fixed split piece side by the magnetic field generated based on the current flowing through the intermediate portion of the fixed split piece according to the right-screw rule, or the suction fixed piece Therefore, the contact pressure can be further increased without increasing the size of the apparatus, and contact welding or the like can be prevented.

In another embodiment of the present invention, the first fixed contact and the first movable contact are an arc fixed contact and an arc movable contact, respectively, and the second fixed contact and the second movable contact are an energization fixed contact and It may be a movable contact for energization.
According to this embodiment, contact welding due to arc discharge can be more effectively prevented. In particular, since the arc fixed contact generally has a larger electric resistance than the energizing fixed contact, the current flowing through the arc fixed contact is smaller than the current flowing through the energizing fixed contact. For this reason, even if the first movable split piece of the movable contact piece and the main body of the fixed contact piece provided with the arc fixed contact face each other, the arrangement of the arc fixed contact and the energizing fixed contact is reversed. Rather than the electromagnetic repulsive force generated between the two, it is possible to suppress the decrease in contact pressure.

An embodiment according to the present invention will be described with reference to the accompanying drawings of FIGS.
As shown in FIGS. 1 to 11, the first embodiment is roughly composed of a base 10, an electromagnet block 20, a movable block 30, a contact mechanism 40, a card 80, a reed switch 90, and a case 95. This is a case where it is applied to a self-holding electromagnetic relay.

  As shown in FIG. 2, the base 10 has a pair of support walls 12 and 13 that support a movable block 30 (described later) extending from both side edges on one side of the insulating wall 11 erected at the center of the upper surface. On the other hand, partition walls 14 and 15 are arranged in parallel at a predetermined pitch on the one surface side where the insulating wall 11 remains. The support walls 12 and 13 are provided with shaft holes 12a and 13a for supporting a movable block 30 described later. Further, a housing recess 13b for attaching a reed switch 90 described later is provided on the outer surface of the support wall 13. A guide projection 17 projects from the upper end of the partition wall 14.

  As shown in FIGS. 3 and 4, the electromagnet block 20 is obtained by winding a coil 22 around a body portion 21c (FIG. 4) of a spool 21 having flange portions 21a and 21b at both ends. Both ends of the coil 22 are electrically connected to coil terminals 23a and 23b provided on the flange 21b. Further, two plate-like iron cores 24 and 25 are inserted into the through hole 21d of the body portion 21c, and the first yoke 26 having a substantially L-shaped cross section is caulked and fixed to the protruding upper end portion, while the protruding lower end portion The second yoke 27 having a substantially L-shaped cross section is fixed by caulking. For this reason, the magnetic pole part 26a located in the lower end part of the 1st yoke 26 and the magnetic pole part 27a located in the upper end part of the 2nd yoke 27 have faced at predetermined intervals (FIG. 3).

  As shown in FIG. 5, the movable block 30 is inserted into and engaged with a permanent magnet 35 and a pair of movable iron pieces 36, 37 from below in a holder 31 having a substantially H-shaped cross section. The permanent magnets 35 are held by iron pieces 36 and 37. The holder 31 has a rotation shaft 32a (not shown) and a rotation shaft 32b projecting from the opposite side surfaces on the same axis.

  Then, after the movable block 30 is temporarily assembled between the magnetic pole portions 26 a and 27 a of the electromagnet block 20, the electromagnet block 20 is assembled between the support walls 12 and 13 of the base 10. Is positioned at a predetermined position. Further, when the rotation shafts 32a and 32b of the movable block 30 are fitted into the shaft holes 12a and 13a of the support walls 12 and 13 of the base 10, the movable block 30 is rotatably supported.

  As shown in FIG. 2, the contact mechanism 40 includes first and second movable contact terminals 41 and 51 and first and second fixed contact terminals 61 and 71. As shown in FIG. 6, the first movable contact terminal 41 includes a front substantially U-shaped movable contact piece 42, a front substantially L-shaped auxiliary movable contact piece 45, a terminal portion 46, an arc movable contact 47, It consists of an energizing movable contact 48 and a suction iron piece 49 made of a magnetic material. Then, bent portions 43a, 44a and 45a are formed at the intermediate portion of the movable split pieces 43 and 44 forming the movable contact piece 42 and at the intermediate portion of the vertical portion of the auxiliary contact piece 45, respectively. Also, the upper end portions 43c, 44c and 45c of the movable split pieces 43 and 44 and the auxiliary movable contact piece 45 are narrow, respectively. This is because if the entire movable split pieces 43 and 44 or the vertical portion of the auxiliary contact piece 45 is made narrow, the electrical resistance increases and heat is easily generated. Furthermore, mounting tongue pieces 44d and 44d extend from both sides of the base portion of the upper end portion 44c of the movable split piece 44, respectively. On the other hand, a shielding tongue 45 d for shielding the energizing movable contact 48 from the arc discharge of the arc movable contact 47 extends from the base part side of the upper end portion 45 c of the auxiliary contact piece 45.

  Then, the lower end portions of the movable contact piece 42 and the auxiliary contact piece 45 are caulked and integrated with the upper end portion of the terminal portion 46. Furthermore, the arc movable contact 47 is fixed by caulking to the caulking hole 43b of the movable split piece 43, and the energizing movable contact 48 is fixed by caulking to the caulking hole 44b of the movable split piece 44 and the caulking hole 45b of the auxiliary movable contact piece. By doing so, the movable contact piece 42 and the auxiliary movable contact piece 45 are integrated. As a result, a substantially square gap 49a is formed between the bent portion 44a and the bent portion 45a (FIG. 9A). Furthermore, the creeping distance from the movable contact 48 of the auxiliary movable contact piece 45 to the lower crimping position is longer than the creepage distance from the movable contact 48 of the movable split piece 44 to the lower crimping position. This is because when the contact is closed, the movable contact piece 42 and the auxiliary movable contact piece 45 are smoothly rotated without stretching. Further, a suction iron piece 49 is caulked and fixed to the mounting tongue pieces 44 d and 44 d of the movable split piece 44. The suction iron piece 49 is for suppressing the repulsive force between the contacts by sucking each other with a corresponding suction iron piece 69 described later.

  The second movable contact terminal 51 is substantially the same as the first movable contact terminal 41 described above except for the shape of the terminal portion 56, and the arc movable contact 57 and the energizing movable contact 58 are provided below the upper end portions 53c and 55c. Respectively. Further, a suction iron piece and a shielding tongue piece are provided at the base of the upper end portion 55 c in the same manner as the first movable contact terminal 41.

  As shown in FIG. 7, the first fixed contact terminal 61 includes a fixed contact piece 62, a terminal portion 66, an arc fixed contact 67, a current-carrying fixed contact 68, and a suction iron piece 69 made of a magnetic material. It will be. The fixed contact piece 62 is formed by bending the fixed divided pieces 63 and 65 which are divided into two by providing a slit 62a at the wide upper end. Therefore, the upper end portion of the fixed contact piece 62 includes a fixed divided piece 63 for caulking and fixing the arc fixed contact 67 and a fixed divided piece 65 for caulking and fixing the energizing fixed contact 68. 64 is connected and integrated. The connecting portion 64 is bent horizontally to enhance rigidity. Then, the lower end portion of the fixed contact piece 62 is fixed by caulking to the upper end portion of the terminal portion 66, and the arc fixed contact 67 and the energizing fixed contact 68 are respectively inserted into the caulking holes 63a and 65a of the fixed split pieces 63 and 64. Secure with caulking. Further, the first fixed contact terminal 61 is completed by caulking and fixing the suction iron piece 69 on the back side of the fixed divided piece 65.

  The second fixed contact terminal 71 is substantially the same as the first fixed contact terminal 61 described above except for the shape of the terminal portion 76, and the arc fixed contacts 77, 75 are connected to the fixed divided pieces 73, 75 connected by the connecting portion 74. The energizing fixed contacts 78 are fixed by caulking. Further, similarly to the first fixed contact terminal 61, a suction iron piece (not shown) made of a magnetic material is caulked and fixed to the back surface of the fixed divided piece 75.

  Then, as shown in FIG. 2, the first movable contact terminal 41 and the first fixed contact terminal 61 are respectively press-fitted between the partition walls 14 and 15 of the base 10 from the side, as shown in FIG. The arc movable contact 47 and the fixed contact 67 are opposed to each other so as to be able to contact and separate, and the energizing movable contact 48 and the fixed contact 68 are opposed to each other so as to be able to contact and separate.

  Further, by pressing the second fixed contact terminal 51 and the second movable contact terminal 71 from the side between the insulating wall 11 and the partition wall 14 of the base 10 respectively, the arc movable contact 57 and the fixed contact 78 are formed. The energizing movable contact 58 and the fixed contact 77 oppose each other so as to be able to contact and separate.

  The card 80 is a plate-shaped resin molded product that drives the contact mechanism 40 based on the rotating operation of the movable block 30. Then, the guide hole 81 provided in the central portion of the card 80 is fitted into the guide protrusion 17 of the base 10, and the first and second engagement holes 82 and 83 provided in the card 80 are the first ones. The first movable contact terminals 41 and 51 are engaged with upper end portions 43c and 53c of the second movable contact terminals 41 and 51, respectively. Further, the third and fourth engagement holes 84 and 85 provided in the card 80 are engaged with the upper end portions 45c (44c) and 55c of the first and second movable contact terminals 41 and 51, respectively. However, the adjacent first and third engagement holes 82 and 84 and the adjacent second and fourth engagement holes 83 and 85 are provided at positions shifted by a predetermined distance. This is because the energizing movable contacts 48 and 58 are brought into contact with the energizing fixed contacts 68 and 78 after the arc movable contacts 47 and 57 come into contact with the arc fixed contacts 67 and 77, respectively. Further, the card 80 is connected to the movable block 30 by engaging a long hole 86 formed at one end of the card 80 with the engaging projection 34 of the movable block 30.

  The reed switch 90 is for detecting the operating state of the movable block 30, and is incorporated in the housing recess 13b of the support wall 13 provided at a position where the leakage magnetic flux of the permanent magnet 35 can be detected.

  The case 95 has a box shape that can be fitted to the base 10 to which the above-described internal components are assembled, and a gas vent hole 96 is provided at the center of the upper surface thereof. Then, a case 95 is fitted and sealed to the base 10 in which the internal components are incorporated, and after the internal gas is extracted from the degassing hole 96, the degassing hole 96 is heat-sealed. The relay is completed.

Next, the operation of the electromagnetic relay composed of the aforementioned internal components will be described.
First, as shown in FIG. 11A, based on the magnetic force of the permanent magnet 35, the upper end portion of the movable iron piece 36 is attracted to the magnetic pole portion 26a of the yoke 26, and the lower end portion of the movable iron piece 37 is the magnetic pole portion 27a of the yoke 27. Adsorbed to For this reason, the reed switch 90 is in the ON state due to the leakage magnetic flux of the permanent magnet 35 flowing between the lower end portion of the movable iron piece 36 and the magnetic pole portion 27a. Further, the card 80 is biased in the opposite direction to the electromagnet block 20, and the movable contacts 47 and 48 of the first movable contact terminal 41 are in contact with the fixed contacts 67 and 68 of the first fixed contact terminal 61, respectively (see FIG. 9) The movable contacts 57 and 58 of the second movable contact terminal 51 are in contact with the fixed contacts 67 and 68 of the second fixed contact terminal 61, respectively. In this case, the current flowing from the terminal portion 46 of the first movable contact terminal 41 is divided into the movable split pieces 43 and 44, flows from the arc movable contact 47 to the arc fixed contact 67, and flows out from the terminal portion 66. On the other hand, the current flowing into the energizing fixed contact 68 from the energizing movable contact 48 flows into the fixed split piece 63 from the fixed split piece 65 through the connecting portion 64, and flows out from the terminal portion 66.

  Since the repulsive force between the contacts is proportional to the square of the amount of current flowing between the contacts, for example, when the flowing current is divided into two, the repulsive force between the contacts is theoretically a quarter. Can be reduced. In general, the arc fixed contact 47 that is caulked and fixed to the fixed divided piece 63 has an electric resistance larger than that of the energized fixed contact 48, so that the current flowing from the movable divided piece 43 to the fixed divided piece 63 is from the movable divided piece 44. Less than the current flowing through the fixed segment 65. For this reason, even if the electric current which flows into the movable division piece 43 and the fixed division piece 63 is a reverse direction, the electromagnetic repulsion force produced between both can be reduced. Furthermore, a magnetic field is generated based on the right-handed screw law while a current flows through the fixed split piece 65, and the suction iron pieces 49 and 69 attract each other. For this reason, according to this embodiment, there is an advantage that a contact pressure sufficiently larger than the repulsive force between the contact surfaces of the movable contact 48 and the fixed contact 68 can be secured, and contact failure can be prevented.

  When a voltage is applied to the coil 22 so as to generate a magnetic flux that cancels the magnetic flux of the permanent magnet 35, the upper end portion of the movable iron piece 36 is repelled by the magnetic pole portion 26a of the yoke 26 as shown in FIG. At the same time, the lower end portion of the movable iron piece 37 repels against the magnetic pole portion 27 a of the yoke 27. The lower end portion of the movable iron piece 36 is attracted and attracted to the magnetic pole portion 27a of the yoke 27, and the upper end portion of the movable iron piece 37 is attracted and attracted to the magnetic pole portion 26a of the yoke 26. For this reason, the leakage magnetic flux of the permanent magnet 35 disappears, and the reed switch 90 is turned off. Furthermore, after the energizing movable contacts 48 and 58 are separated from the energizing fixed contacts 68 and 78, respectively, the arc movable contacts 47 and 57 are separated from the arc fixed contacts 67 and 77, respectively. Even if arc discharge occurs while the arc movable contacts 47 and 57 are completely separated from the arc fixed contacts 67 and 77, the energized movable contacts 48 and 58 and the energized fixed contacts 68 and 78 are scattered. The shielding tongues 45c and 55c suppress the adhesion of powder or the like.

  Next, when a voltage in the direction opposite to the applied voltage is applied to the coil 22, the upper end of the movable iron piece 36 is attracted and attracted to the magnetic pole part 26 a of the yoke 26, and the upper end of the movable iron piece 37 is attached to the yoke 26. Repels the magnetic pole part 26a. The lower end portion of the movable iron piece 36 repels the magnetic pole portion 27 a of the yoke 27, and the lower end portion of the movable iron piece 37 is attracted and attracted to the magnetic pole portion 27 a of the yoke 27. For this reason, the reed switch 90 is turned on by the leakage magnetic flux of the permanent magnet 35. As a result, the movable block 30 rotates and slides the card 80. Then, after the arc movable contacts 47 and 57 are in contact with the arc fixed contacts 67 and 77, the energization movable contacts 48 and 58 are in contact with the energization fixed contacts 68 and 78, respectively. Further, even if an arc discharge occurs while the arc movable contacts 47 and 57 are in contact with the arc fixed contacts 67 and 77, the scattered powder to the energizing movable contacts 48 and 58 and the energizing fixed contacts 68 and 78, etc. Is prevented by the shielding tongue pieces 45d and 55d. Thereafter, the circuit is opened and closed by repeating the same operation.

  In the present embodiment, when the movable split piece 44 and the auxiliary contact piece 45 of the first movable contact terminal 41 rotate, a substantially square gap 49a is formed between the bent portions 44a and 45a. Further, the creepage distance of the auxiliary contact piece 45 is longer than the creepage distance of the movable split piece 44. For this reason, when the movable divided piece 44 and the auxiliary contact piece 45 are rotated, there is an advantage that the movable divided piece 44 and the auxiliary contact piece 45 are smoothly rotated without stretching.

  The electromagnet block 20 and the movable block 30 are not limited to those having the above-described configuration. For example, as in the second embodiment shown in FIG. 12, the magnetic block portions 24a and 24b of the substantially C-shaped iron core 24 around which the coil 22 is wound. The movable iron piece 36 in which the permanent magnet 35 is arranged at the center of one side may be supported so as to be rotatable. A reed switch 90 that detects the leakage flux of the permanent magnet 35 is disposed in the vicinity of the magnetic pole portion 24 b of the iron core 24.

  For this reason, the permanent magnet 35 generated when the end portion 36 b of the movable iron piece 36 is separated from the magnetic pole portion 24 b of the iron core 24 by applying a voltage to the coil 22 and rotating the movable iron piece 36. Due to the leakage magnetic flux, the reed switch 90 is turned on. Further, when the movable iron piece 36 rotates and the end portion 36b is attracted to the magnetic pole portion 24b of the iron core 24, the leakage magnetic flux of the permanent magnet 35 disappears, and the reed switch 90 is turned off. The rest is substantially the same as in the first embodiment described above, and a detailed description thereof will be omitted.

  Further, as in the third embodiment shown in FIG. 13, a permanent magnet 35 is arranged at the center of the C-shaped iron core 24 to form a substantially E shape, and the coil 22 is wound around the iron core 24, and the permanent The movable iron piece 36 may be rotatably supported on the free end portion of the magnet 35. A reed switch 90 is disposed in the vicinity of the magnetic pole portion 24b of the iron core 24.

  For this reason, by applying a voltage to the coil 22 and rotating the movable iron piece 36, the reed switch 90 is turned on and off due to the influence of the leakage magnetic flux of the permanent magnet 35. The rest is substantially the same as in the first embodiment described above, and a detailed description thereof will be omitted.

  The attracting iron piece preferably has a high magnetic permeability in order to increase magnetic efficiency. The shape may be not only a plate shape but also a substantially L shape, a substantially U shape, and a substantially C shape.

  Of the iron pieces for suction, the movable iron piece for suction is not limited to being attached above the movable contact provided on the movable contact piece, but the opposing surface positioned between the base of the movable contact piece and the movable contact or You may attach to the back. In this case, it is preferable to provide a fixed iron piece for suction at a position corresponding to the movable iron piece for suction. For example, the fixed iron piece for suction may be attached to the opposite surface or the back surface of the extending portion that extends downward from the lower end edge of the fixed divided piece in the above-described embodiment. Further, a protrusion is provided on the upper surface of the base where the fixed contact piece of the fixed divided piece is erected so as to be juxtaposed with the fixed contact piece, and a suction fixed iron piece is embedded in the upper end of the protrusion. It may be left. By embedding in this way, there is an advantage that a decrease in contact pressure can be prevented while a decrease in insulation performance is prevented.

  Of course, the present invention is not limited to the electromagnetic relay described above, but may be applied to an electromagnetic relay having a normally open contact and / or a normally open contact and a normally closed contact.

It is a perspective view of the electromagnetic relay concerning 1st Embodiment of this invention. It is a disassembled perspective view of embodiment shown in FIG. FIG. 3 is a partially enlarged view of FIG. 2. FIG. 3 is an exploded perspective view of the electromagnet block shown in FIG. 2. It is a disassembled perspective view of the movable block shown in FIG. FIG. 3 is an exploded perspective view of a first movable contact terminal shown in FIG. 2. FIG. 3 is an exploded perspective view of a first fixed contact terminal shown in FIG. 2. FIGS. A and B are perspective views of the combined state of the first movable contact terminal and the first fixed contact terminal as seen from different angles. FIGS. A and B are a side view and a partially enlarged view of the combined state shown in FIG. FIG. 10 is a partially broken enlarged perspective view of FIG. 9. FIGS. A and B are front views showing before and after operations of the electromagnet block and the movable block. FIGS. A and B are front views showing before and after operations of the electromagnet block and the movable block according to the second embodiment. FIGS. A and B are front views showing before and after operations of the electromagnet block and the movable block according to the third embodiment. FIG. A is a schematic enlarged view showing a contact structure according to a conventional example, and FIG. B is a graph showing an electromagnetic repulsion force of the contact according to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: Base 11: Insulating wall 12, 13: Support wall 12a, 13a: Shaft hole 13b: Storage recessed part 14, 15: Partition wall 17: Protrusion for guide 20: Electromagnet block 21: Spool 22: Coil 24, 25: Plate shape Iron cores 26, 27: First and second yokes 26a, 27a: Magnetic pole portion 30: Movable block 31: Holder 32a, 32b: Rotating shaft 35: Permanent magnet 36, 37: Movable iron piece 40: Contact mechanism 41, 51: First and second movable contact terminals 42: movable contact piece 43: arc movable divided piece 44: energized movable divided piece 45: auxiliary movable contact piece 46, 56: terminal portion 47, 57: arc movable contact 48, 58 : Movable contact 61 for energization 61, 71: first and second fixed contact terminals 62, 72: fixed contact piece 63, 73: fixed divided piece 64, 74: fixed divided piece 66, 76: terminal portion 67 77: Arc fixed contact 68, 78: Energizing fixed contact 80: Card 81: Guide hole 82, 83: First and second engagement holes 84, 85: Third and fourth engagement holes 86: Long hole 90: Reed switch 95: Case 96: Gas vent hole

Claims (4)

A movable contact piece provided with a movable contact and a fixed contact piece provided with a fixed contact are erected on a base, and the movable contact piece is rotated via a card that supports the upper end portion of the movable contact piece. An electromagnetic relay that contacts and separates the contact from the fixed contact,
A fixed portion in which a first movable contact and a second movable contact are provided at an intermediate portion between the first movable divided piece and the second movable divided piece of the movable contact piece having a substantially U shape, respectively, and a first fixed contact is provided at the intermediate portion. A fixed split piece extends vertically downward through a connecting portion extending in the horizontal direction from the upper end portion of the contact piece, and a second fixed contact is provided at the lower end portion of the fixed split piece. An electromagnetic relay characterized in that two movable contacts are respectively connected to and separated from the first and second fixed contacts.   The attraction movable piece made of a magnetic material is provided at a position facing the intermediate portion of the fixed divided piece, of the opposing surface of the second movable divided piece opposed to the fixed divided piece. Electromagnetic relay.   3. The electromagnetic relay according to claim 1, wherein a suction fixing piece made of a magnetic material is provided at a rear intermediate portion of the fixed split piece provided with the second fixed contact at the lower end portion. The first fixed contact and the first movable contact are an arc fixed contact and an arc movable contact, respectively, and the second fixed contact and the second movable contact are an energization fixed contact and an energization movable contact, respectively. The electromagnetic relay according to any one of claims 1 to 3.

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