JP2005259654A - Contact block structure of electromagnetic relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a contact block structure of an electromagnetic relay in which a down-sizing is possible and the number of parts and assembling manhours can be reduced. <P>SOLUTION: In this contact block structure of the electromagnetic relay, an assisting side guide 12 has hole parts 20 and contact piece mounting parts 17 having notch parts 21 passing through from the peripheral face part of the hole parts 20 to the both side face parts of the assisting side guide 12, and as for contact pieces 24, the center part of contact piece main bodies 24A consisting of a spring material of a strip shape is made as fitting parts 25, and assisting side movable contacts 28 are firmly fixed to the tip part of spring piece parts 26 on both sides of the fitting parts 25, and the contact pieces 24 are mounted on the contact piece mounting parts 17 because the fitting parts 25 are fitted to the hole part 20 and the base parts of the spring piece parts 26 are inserted into the notch parts 21, and the assisting side movable contacts 28 approach closer to assisting side fixed contacts 37 side by making to have an angle to the spring piece parts 26. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a contact block structure of an electromagnetic relay that can be used as a high-capacity power relay or the like.

  As an electromagnetic relay, an auxiliary contact block is detachably provided on the main body of the electromagnetic relay that has a contact contact mechanism on the main body side that connects and disconnects the movable contact with respect to the fixed contact, and the auxiliary contact block is linked to the operation of the main body contact contact mechanism. Some have a side contact contact mechanism. In some cases, the electromagnetic relay main body is used for a control system of a control device, for example, and the auxiliary contact block is used for a computer or for communication, for example.

  As shown in FIGS. 15 to 17, the auxiliary contact block in the conventional contact block structure has a contact block body 101 having a terminal block 100. The contact block body 101 includes a guide housing portion 102, Contact arrangement portions 103 located on both sides of the guide accommodating portion 102 are provided, and an auxiliary guide 104 that is interlocked with the operation of the main body side contact contact mechanism (not shown) is movable in the guide accommodating portion 102. In addition, the auxiliary side fixed contact 105 of the fixed terminal 105 </ b> A is arranged in the contact arrangement portion 103. Further, as shown in FIG. 17, the auxiliary guide 104 is provided with a contact piece insertion portion 110 and a contact spring accommodating portion 106.

  Then, the contact piece 107 is inserted into the contact piece insertion portion 105 while being urged toward the auxiliary fixed contact 105 side by the contact spring 108 housed in the contact spring housing portion 106, and the auxiliary piece provided on the contact piece 107. The side movable contact 109 is opposed to the auxiliary side fixed contact 105 so as to be able to contact and separate.

  In this case, on the auxiliary contact block side, when the main body side contact mechanism (not shown) of the main body side contact contact mechanism (not shown) is in the return state, the auxiliary side guide 104 is also in the return state. The side movable contact 109 is separated from the auxiliary side fixed contact 105, but the main body side guide moves against the return spring (not shown) to move the auxiliary side guide 104, and the auxiliary side movable contact 109 is moved. The auxiliary side fixed contact 105 is brought into contact. In this case, contact pressure is obtained from the configuration of the auxiliary guide 104, the contact piece 107, and the contact spring 108, and this contact pressure acts on each contact piece 107 to obtain contact contact pressure.

Moreover, as a conventional electromagnetic relay, there exists what consists of an electromagnet part, a terminal block, an insulating board, and a case. In other words, a base is formed by a terminal block and an insulating plate, and a guide is slidably incorporated in a slide groove provided in the center thereof, and is placed in a plurality of chambers arranged at equal intervals so as to face both sides of the slide groove. Each contact terminal is provided with a fixed terminal, and the contact piece is urged by a contact spring so that the movable contact of the contact piece protruding laterally from both sides of the guide at an equal interval is opposed to the fixed terminal so as to be able to contact and separate, The coil is energized to excite the coil, the movable iron piece is rotated, the guide is moved against the return spring, and the movable contact is pressed against the fixed contact (see Patent Document 1).
JP-A-5-342914

  In the above-described conventional electromagnetic relay shown in FIGS. 15 to 17, the contact contact mechanism obtains contact pressure from the configuration of the auxiliary guide 104, the contact piece 107, and the contact spring 108, and the contact spring 108. Therefore, the space for attaching the contact spring 108 is required, and the auxiliary guide 104 cannot be reduced in size, and cannot be reduced as a contact auxiliary block. Further, since the contact spring 108 is provided, there is a problem that the number of parts and the number of assembly steps cannot be reduced.

  The present invention has been made to improve the above-described conventional problems, and the object of the present invention is to provide a contact for an electromagnetic relay that can be miniaturized and can reduce the number of parts and the number of assembly steps. It is to provide a block structure.

  In order to achieve the above object, the electromagnetic relay contact block structure of the present invention is provided with an auxiliary contact block that is detachably attached to an electromagnetic relay main body having a main body-side contact contact mechanism for separating and connecting a movable contact to a fixed contact. A contact block structure of an electromagnetic relay in which an auxiliary contact block is provided with an auxiliary contact contact mechanism that interlocks with the operation of the main body side contact contact mechanism, and the auxiliary contact contact mechanism is interlocked with the operation of the main body side contact contact mechanism. The auxiliary guide is provided with a spring-rich contact piece having an auxiliary movable contact, and the auxiliary movable contact is separated from the auxiliary fixed contact by the movement of the auxiliary guide.

  With this configuration, the contact side force is obtained by the auxiliary side movable contact provided on the contact piece coming into contact with the opposing auxiliary side fixed contact and the contact piece being bent. This eliminates the need for a contact spring, eliminates the need for a mounting space for the contact spring, allows the auxiliary side guide to be reduced in size, and allows the contact auxiliary block to be reduced in size. Further, since the contact spring is not required, the number of parts can be reduced and the number of assembly steps can be reduced.

  Further, the contact block structure of the electromagnetic relay of the present invention is the above-described contact block structure of the electromagnetic relay of the present invention, wherein the auxiliary side guide is pulled out from the hole portion and the peripheral surface portion of the hole portion to both side portions of the auxiliary side guide. It has a contact piece mounting portion having a cut portion, and the contact piece has a center portion of a contact piece body made of a strip-shaped spring material as a fitting portion, and the tip portions of the spring piece portions on both sides of the fitting portion. The contact piece is attached to the contact piece mounting portion by fitting the fitting portion into the hole portion and inserting the base portion of the spring piece portion into the cut portion. The auxiliary side movable contact is brought close to the auxiliary side fixed contact side with the spring piece portion having an angle.

  With this configuration, it is possible to easily and easily assemble the contact piece to the auxiliary side guide, and the auxiliary side movable contact is brought closer to the auxiliary fixed contact side with the spring piece portion having an angle. The contact force due to the bending of the contact piece can be further increased.

  Further, the contact block structure of the electromagnetic relay of the present invention is the above-described contact block structure of the electromagnetic relay of the present invention, in which the spring piece portion is formed with a cut portion from each end edge portion to the fitting portion side. .

  With this configuration, the spring property of the contact piece can be further increased by the cut portion, and the contact force due to the bending of the contact piece can be further increased.

  According to the contact block structure of the electromagnetic relay of the present invention, the contact side force is obtained when the auxiliary movable contact provided on the contact piece comes into contact with the opposing auxiliary fixed contact and the contact piece bends. This eliminates the need for a contact spring, eliminates the need for a mounting space for the contact spring, allows the auxiliary side guide to be reduced in size, and allows the contact auxiliary block to be reduced in size. In addition, by eliminating the need for contact springs, the number of parts and assembly man-hours can be reduced.

  Embodiments of the present invention will be described in detail with reference to the drawings.

  An embodiment of the present invention is shown in FIGS. 1 is a perspective view of an electromagnetic relay having a contact block structure according to the present invention, FIG. 2 is a perspective view of an electromagnetic relay main body in the electromagnetic relay, FIG. 3 is a perspective view of an auxiliary contact block, and FIG. 4 is an exploded view of the auxiliary contact block. It is a perspective view of a state.

  The contact block structure of the present invention includes an auxiliary contact block 3 as shown in FIG. 1, and this auxiliary contact block 3 is detachably attached to the electromagnetic relay main body F. The electromagnetic relay main body F is configured by integrating the electromagnetic operating unit 1 and the contact block 2. In FIG. 1, J is an AC operation unit that is detachably attached to the electromagnetic relay main body F.

  As shown in FIGS. 3 to 8, the auxiliary contact block 3 is composed of a base 11, an auxiliary guide 12, and a block body 13 having a terminal block 13A.

  The base 11 has a rectangular bottom surface portion 11A and short side wall portions 11B and 11C of the base, and is inserted into the bottom surface portion 11A while being positioned at the center thereof as shown in FIG. Opening 14 is formed. Further, the side wall portions 11B and 11C are formed with an engaging groove portion 15 and a locking hole portion 8, and the base 11 is provided with a locking claw portion 9 at one end portion in the longitudinal direction of the bottom surface portion 11A. is there.

  The auxiliary side guide 12 has guide bodies 12A and 12B that can be disassembled up and down in FIG. 5, and one guide body 12A has a guide portion 16 on a base portion 12C that matches the upper surface portion of the other guide body 12B. The guide portion 16 is provided with a knob 16 a at the top. Further, a locking pin (not shown) is provided on the base portion 12C.

  The other guide body 12B is provided with two contact piece mounting portions 17 in the longitudinal direction of the upper surface portion, and a pin hole 18 is provided at the center of the upper surface portion. The contact piece mounting portion 17 includes a hole portion 20 and a cut portion 21 that extends from the peripheral surface portion of the hole portion 20 to both side surface portions 12a and 12b. Further, a pair of leg portions 22 project from the lower surface portion of the other guide body 12B, and a projection insertion portion 23 is formed between these leg portions 22.

  A contact piece 24 is mounted on the contact piece mounting portion 17 of the other guide body 12B. That is, as shown in FIG. 7, the contact piece 24 is formed with a semicircular center portion of a contact piece main body 24A made of a strip-shaped spring material to form a fitting portion 25, and the contact piece main body 24A is fitted. In the spring piece portions 26 on both sides of the portion 25, cut portions 27 are formed from the respective end edge portions 26a to the fitting portion 25 side, and the auxiliary-side movable contact 28 is fixed to the tip portions of both spring piece portions 26. is there.

  And the contact piece 24 comprised in this way is fitted in the contact piece mounting part 17 by fitting the fitting part 25 in the hole part 20, and inserting the base of both the spring piece parts 26 in the notch part 21. It is attached. In this case, as shown in FIG. 8, the auxiliary movable contact 28 is brought closer to the auxiliary fixed contact 37 described later with the spring piece portion 26 having an angle. The auxiliary side guide 12, the contact piece 24 carried by the auxiliary side guide 12, the auxiliary side movable contact 28, and the auxiliary side fixed contact 37 constitute an auxiliary side contact contact mechanism.

  Then, the locking pin is locked in the pin hole 18 on the upper surface portion of the other guide body 12B, and the base portion 11 of the one guide body 12A is matched with the upper surface portion of the other guide body 12B, whereby one guide body The auxiliary guide 12 is configured by attaching the body 12A to the other guide body 12B.

  As shown in FIG. 4 and FIG. 9 (1), the block main body 13 includes end wall portions 13B and 13C, a guide accommodating portion 30 located between these end wall portions 13B and 13C, and the guide accommodating portion. 30 and the contact arrangement | positioning part 35 located in the both sides.

  A long opening 31 is formed at the center of the ceiling 30A of the guide housing 30 so as to be positioned at the center thereof. Moreover, the terminal mounting part 32 is provided in the both sides on both sides of the guide accommodating part 30, and the terminal mounting part 32 is divided by partitioning the end wall parts 13B and 13C by the partition wall part 33.

  Further, the end wall portions 13B and 13C and the partition wall portion 33 extend downward in FIG. 4, and a space between these extended portions 34 is a contact arrangement portion 35, and a bottom portion of the terminal mounting portion 32 is provided. A locking claw portion 36 is provided on the outer surface portion.

  Each contact placement portion 35 is provided with an auxiliary side fixed contact 37 of the fixed terminal 37 </ b> A, and the auxiliary side fixed terminal 37 </ b> A is attached to the terminal mounting portion 32.

  The block main body 13 is attached to the base 11 by engaging the locking claw 36 with the locking hole 8 in a state in which the auxiliary guide 12 is stored in the guide housing 30. Is inserted into the opening 31 of the guide housing 30, and the pair of leg portions 22 of the other guide body 12 </ b> B are inserted into the opening 14 of the base 11 and project outside the base 11.

  As shown in FIGS. 10 and 11, the electromagnetic actuating unit 1 of the electromagnetic relay main body F includes a case 41, an electromagnetic block 42, and an iron piece 44.

  The side wall portions 41A, 41B in the short direction of the case 41 and one end wall portion 41C facing each other in the longitudinal direction of the case 41 are provided with locking holes 41E, and the inner surface of the other end wall portion 41D is provided on the inner surface of the other end wall portion 41D. A pair of partition wall portions 41F are formed, and an interval between the partition wall portions 41F is an iron piece housing portion 46A, and a portion excluding the iron piece housing portion 46A is an electromagnetic block housing portion 46B. And the support part (not shown) of the iron piece 44 is provided in the bottom part of the iron piece accommodating part 46A.

  The electromagnetic block 42 has a spool 47, and a coil 48 is wound around the spool 47, and an iron core 43 is inserted into the center hole 47 a of the spool 47. The right end portion is a magnetic pole portion.

  Further, as shown in FIG. 11, the iron piece 44 has a rectangular iron piece main body 44A, and fulcrum portions 44B are provided at lower portions of both side portions of the iron piece main body 44A, and the iron piece main body 44A. An engaging projection 45 is provided at the center of the upper side of the.

  And as shown in FIG. 10, the electromagnetic block 42 is accommodated in the electromagnetic block accommodating part 46B of the case 41, and the iron piece 44 is accommodated in the iron piece accommodating part 46A, respectively. Further, the fulcrum portion 44B of the iron piece 44 is pivotally supported on the support portion of the iron piece housing portion 46A. The iron piece 44 faces the magnetic pole portion of the iron core 43 of the electromagnetic block 42.

  As shown in FIG. 12, the contact block unit 2 includes a base 50, a main body side guide 51, a block main body 52 having a terminal block 52 </ b> A, and a return spring 53.

  As shown in FIG. 12, an insertion opening 54 is formed on the bottom surface 50A of the base 50 on the right side in FIG. Further, the end wall portions 50D and 50E are provided with a pair of locking hole portions 55, respectively. The base 50 is provided with locking claws 56 at both ends in the longitudinal direction of the bottom surface 50A.

  The main body side guide 51 has one and other guide main bodies 51A and 51B that can be disassembled up and down in FIG. 13, and one guide protrusion 57 is located at the left end of FIG. 13 of one guide main body 51A. A return spring accommodating portion 57 </ b> A is formed at the base of one guide projection 57. In addition, in FIG. 13 of the other guide main body 51B, the other guide projection 58 projects downward from the right end, and the other guide projection 58 has an engaging recess 58A. .

  Further, as shown in FIG. 13, one guide main body 51 </ b> A has four rectangular contact piece insertion portions 59 extending from the one side surface 51 a to the other side surface portion 51 b in the longitudinal direction of the main body side guide 51. As shown in FIG. 14, a spring accommodating portion 60 is provided on an end surface portion 59 a on the right side in FIG. 14 of the contact piece insertion portion 59. Further, abutting portions 61 are provided on the side surface portions 51 a and 51 b so as to be positioned on the end surface portion 59 a side of the contact piece insertion portion 59.

  Further, as shown in the figure, the contact piece 62 has a movable contact 63 fixed to both ends of the surface, and the back of the contact piece 62 has a U-shaped spring piece at both ends. A spring auxiliary member 64 having 64a is attached.

  As shown in FIG. 14, the contact piece 62 is inserted into the contact piece insertion portion 59, and the contact spring 65 is accommodated in the spring accommodation portion 60. Then, the contact spring 65 abuts against the contact piece 62, and the contact piece 62 is urged by the spring force of the contact spring 65 and abuts on the left end surface portion 59b of the contact piece insertion portion 59 in FIG.

  As shown in FIG. 14, the block main body 52 is formed with a guide accommodating portion 66 and a contact arrangement portion 67, and the terminal block main body 52A is equipped with a plurality of terminals on both sides of the guide accommodating portion 66. A portion 68 is provided.

  A long insertion recess 69 is formed in the ceiling 66A of the guide housing 66 on the end wall 52B side, and a long opening 70 is provided at the bottom of the insertion recess 69. is there. Further, the end wall portion 52B is provided with a locking hole portion 52D through which the insertion concave portion 69 is removed (see FIG. 2). Further, a locking claw portion 72 is provided on the leg portion 71 of the end wall portions 52B and 52C. Further, as shown in FIGS. 12 and 14, the fixed contact 73 of the fixed terminal 73 </ b> A is arranged in each contact arrangement portion 67.

  Then, the block main body 52 is attached to the base 50 by engaging the locking claw 72 with the locking hole 55 in a state where the main body side guide 51 is accommodated in the guide housing 66. The protrusion 57 is inserted into the opening 70 of the guide housing 66, and the other guide protrusion 58 is inserted into the insertion opening 54 of the base 50.

  The return spring 53 is accommodated in the return spring accommodating portion 57 </ b> A of the one guide protrusion 57, and the main body side guide 51 is positioned in the return state by the urging force of the return spring 53.

  That is, in this return state, each contact piece 62 is pressed against the end surface portion 59b of the contact piece insertion portion 59 by the urging force of each contact spring 65, and the movable contact 63 provided on the contact piece 62 is fixed contact. The spring piece 64 a of the spring auxiliary member 63 is separated from the abutting portion 61. The main body side guide 51, the contact piece 62 carried by the main body side guide 51, the contact spring 65, the movable contact 63, and the fixed contact 73 constitute a main body side contact contact mechanism.

  The electromagnetic relay main body F is configured by connecting the contact block 2 assembled as described above to the electromagnetic operating unit 1. This connection is performed by releasably engaging the engaging claw portions 56 provided on the bottom surface portion 50 </ b> A of the base 50 with the engaging hole portions 41 </ b> E of the case 41.

  In this state where the contact block 2 is connected to the electromagnetic actuating unit 1, the engaging projection 45 provided on the upper side of the iron piece 44 is the other guide projection 58 protruding from the insertion opening 54 of the base 50. The engaging recess 58A is swingably engaged.

  And the electromagnetic relay is comprised by connecting the auxiliary contact block 3 assembled as mentioned above to the electromagnetic relay main body F. As shown in FIG. This connection is performed by locking the locking claw 9 provided on the base 11 to the locking hole 52D of the contact block 2 of the electromagnetic relay main body F. In this case, the leg portion 22 of the auxiliary side guide 12 is inserted into the fitting recess 69 of the contact block 2, and the protrusion insertion portion 23 between the leg portions 22 of the auxiliary side guide 12 is inserted into the body side of the contact block 2. One guide protrusion 57 of the guide 51 is inserted.

  In this way, in the state where the auxiliary contact block 3 is connected to the electromagnetic relay main body F, if the main body side guide 51 is in the return state, the auxiliary side guide 12 on the auxiliary contact block 3 side is also in the return state, and FIG. As shown in FIG. 9 (1), the auxiliary movable contact 28 of each contact piece 24 is separated from the auxiliary fixed contact 37.

  Next, the operation of the electromagnetic relay (the electromagnetic relay main body F and the auxiliary contact block 3) configured as described above will be described.

  In a state where the coil 48 of the electromagnetic block 42 is not excited, the main body side guide 51 is positioned in a return state due to a return spring load (biasing force) of the return spring 53.

  By exciting the coil 48, an attractive force is generated at the magnetic pole portion of the iron core 43 to attract the iron piece 44 and swing around the fulcrum portion 44 </ b> B. By the swinging of the iron piece 44, the engaging protrusion 45 provided on the upper side of the iron piece 44 moves the main body side guide 51 against the return spring 53 via the other guide protrusion 58. For this reason, the spring piece portion 64 a of the spring auxiliary member 66 contacts the abutting portion 61.

  Since the main body side guide 51 is further pushed in through the iron piece 44 by the suction force, the spring piece portion 64a of the spring auxiliary member 64 is bent by the abutting portion 61, and a load (spring load) is generated in the spring piece portion 64a. To do. This state is the time of complete adsorption, and the contact pressure formed by the contact spring load and the load (spring load) generated at the spring piece portion 64 a acts on the contact piece 62 to press the movable contact 63 against the fixed contact 73.

  In addition, by releasing the excitation of the coil 48 and releasing the attractive force, the main body side guide 51 is moved by the return force of the return spring 53 and returns to the return position.

  On the auxiliary contact block 3 side, when the main body side guide 51 is in the return state, the auxiliary side guide 12 on the auxiliary contact block 3 side is also in the return state as shown in FIG. The auxiliary movable contact 28 is separated from the auxiliary fixed contact 37. As described above, the coil 48 of the electromagnetic block 42 is excited and the main body guide 51 is moved to the return spring 53 via the iron piece 44 by the attractive force. When it moves against one side, one guide projection 57 of the main body side guide 51 interferes with the leg portion 22 of the auxiliary side guide 12, and the auxiliary side guide 12 is moved as shown in FIGS. In order to move, the auxiliary movable contact 28 provided on the contact piece 24 is brought into contact with the auxiliary fixed contact 37 and the contact piece 24 is bent to obtain a contact force.

  As described above, according to the embodiment of the present invention, the auxiliary side movable contact provided on the contact piece comes into contact with the opposing auxiliary side fixed contact and the contact piece bends to obtain a contact force. . This eliminates the need for a contact spring, eliminates the need for a mounting space for the contact spring, allows the auxiliary side guide to be reduced in size, and allows the contact auxiliary block to be reduced in size. Further, since the contact spring is not required, the number of parts can be reduced and the number of assembly steps can be reduced.

  In addition, since the contact piece can be easily and easily assembled to the auxiliary guide, and the auxiliary movable contact is brought close to the auxiliary fixed contact side with the spring piece portion having an angle, the contact piece It is possible to further increase the contact force due to the bending of.

  In addition, by forming a cut portion on the spring piece portion from each end edge portion to the fitting portion side, the spring property of the contact piece can be further increased, and the contact force due to the bending of the contact piece can be further increased. Can be increased.

  In the contact block structure of the electromagnetic relay according to the present invention, the contact side force is obtained when the auxiliary movable contact provided on the contact piece contacts the opposing auxiliary fixed contact and the contact piece bends. This eliminates the need for a contact spring, eliminates the need for a mounting space for the contact spring, allows the auxiliary side guide to be reduced in size, and allows the contact auxiliary block to be reduced in size. Further, since the contact spring is not required, the number of parts can be reduced and the number of assembling steps can be reduced, which is useful as a contact block structure of an electromagnetic relay that can be used as a high-capacity power relay.

1 is a perspective view of an electromagnetic relay having a contact block structure according to the present invention. It is a perspective view of the electromagnetic relay main body in the same electromagnetic relay. It is a perspective view of an auxiliary contact block. It is a perspective view of the decomposition state of an auxiliary contact block It is a perspective view of the auxiliary side guide in an auxiliary contact block. It is a perspective view of the other guide main body of the guide. It is a perspective view of a contact piece. It is arrangement | positioning explanatory drawing of the movable contact and fixed contact in an auxiliary side guide. (1), (2), (3) is an operation explanatory diagram of the auxiliary contact block. It is a perspective view of the decomposition | disassembly state of an electromagnetic relay main body. It is a perspective view of the disassembled state of an electromagnetic block. It is a perspective view of the decomposition | disassembly state of a contact block. It is a perspective view of the guide in the contact block. It is explanatory drawing of a guide. It is a perspective view of the contact block structure of the conventional electromagnetic relay. It is a longitudinal cross-sectional view of the same contact block structure. It is explanatory drawing of an auxiliary | assistant side guide.

Explanation of symbols

F Electromagnetic relay body 1 Electromagnetic actuator 2 Contact block 3 Auxiliary contact block 11 Base 12 Auxiliary side guide (auxiliary side contact contact mechanism)
13 Block body 14 Insertion opening 17 Contact piece mounting portion 20 Hole portion 21 Cutting portion 22 Leg portion 23 Projection insertion portion 24 Contact piece (auxiliary contact contact mechanism)
24A Contact piece body 25 Fitting portion 26 Spring piece portion 27 Cut portion 28 Auxiliary side movable contact (auxiliary side contact contact mechanism)
37 Auxiliary side fixed contact (Auxiliary side contact contact mechanism)
51 Main unit side guide (Main unit contact contact mechanism)
62 Contact piece (Main body side contact contact mechanism)
65 Contact spring (Main body contact contact mechanism)
73 Fixed contact (Main body contact mechanism)

Claims (3)

An auxiliary contact block is detachably provided in the electromagnetic relay main body having a main body contact contact mechanism for separating and moving the movable contact with respect to the fixed contact, and the auxiliary contact contact is interlocked with the operation of the main body contact contact mechanism. A contact block structure of an electromagnetic relay provided with a mechanism,
The auxiliary-side contact contact mechanism is provided with a spring-rich contact piece having the auxiliary-side movable contact on the auxiliary-side guide interlocked with the operation of the main-body-side contact contact mechanism, and the auxiliary-side guide moves by moving the auxiliary-side guide. A contact block structure for an electromagnetic relay, characterized in that the movable contact is separated from the auxiliary fixed contact. The auxiliary side guide has a contact piece mounting portion having a hole portion and a notch portion extending from a peripheral surface portion of the hole portion to both side surface portions of the auxiliary side guide,
The contact piece is a configuration in which a central part of a contact piece main body made of a strip-shaped spring material is used as a fitting part, and the auxiliary movable contact is fixed to the tip part of the spring piece part on both sides of the fitting part,
The contact piece is mounted on the contact piece mounting portion by fitting the fitting portion into the hole portion and inserting a base portion of the spring piece portion into the cut portion. 2. The contact block structure for an electromagnetic relay according to claim 1, wherein the auxiliary movable contact is brought close to the auxiliary fixed contact side with an angle. The contact block structure of the electromagnetic relay according to claim 2, wherein a cut portion is formed on the spring piece portion from each end edge portion to the fitting portion side.

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