JP2011060547A - Electromagnetic relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately set a gap between an iron core and an armature of an electromagnetic relay. <P>SOLUTION: In the electromagnetic relay including an electromagnet 2 with the iron core 23 attached to a spool 21 on which a coil 22 is mounted, the armature 3 movably disposed in opposition to an end surface of the core 2 and attracted to or separated from the iron core 23 according to a voltage applied to the coil 22, and a contact part 4 opening/closing with the movement of the armature 3, the iron core 23 and the armature 3 are brought into contact with each other when the armature 3 is attracted to the iron core 23 and it includes a gap forming part 3a forming a gap space GS between the end surface of the iron core 23 and the armature 3 adjacent to the contact part. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an electromagnetic relay.

  An electromagnet formed by inserting an iron core along the central axis of the winding frame on which the coil is mounted; an armature that moves according to the voltage applied to the coil; and a contact portion that opens and closes as the armature moves In the electromagnetic relay provided with a protrusion on the end surface of the reel by integral molding, the armature collides with the protrusion during operation of the electromagnetic relay, and a gap is formed between the armature and the iron core. An electromagnetic relay is known (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 61-36940

  By the way, it is desirable for this type of electromagnetic relay to reliably return to a predetermined open-circuit voltage. For this purpose, it is necessary to accurately set the gap between the armature and the iron core. However, since the electromagnetic relay described in Patent Document 1 forms a gap through a protrusion provided on the end face of the winding frame, the accuracy of the gap depends on the processing accuracy of the winding frame and the iron core, the assembly accuracy of the electromagnet, and the like. However, it is difficult to set the gap accurately.

  The present invention is an electromagnet in which an iron core is attached to a winding frame on which a coil is mounted, and is disposed so as to be movable facing the end surface of the iron core, and is attracted to the iron core according to the voltage applied to the coil, or from the iron core In an electromagnetic relay having a spaced apart armature and a contact portion that opens and closes as the armature moves, the iron core and the armature come into contact with each other when the armature is attracted to the iron core. And a gap forming part that forms a gap space between the end face of the iron core and the contact.

  According to the present invention, a gap can be easily and accurately set between an iron core and an armature.

It is a disassembled perspective view of the electromagnetic relay which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the assembly state of the electromagnetic relay which concerns on the 1st Embodiment of this invention. It is principal part sectional drawing of the electromagnetic relay which concerns on the 1st Embodiment of this invention. It is a figure which shows the 1st modification of FIG. It is a figure which shows the 2nd modification of FIG. It is a figure which shows the 3rd modification of FIG. It is principal part sectional drawing in the reset state of the electromagnetic relay which concerns on the 2nd Embodiment of this invention. It is principal part sectional drawing in the operation state of the electromagnetic relay which concerns on the 2nd Embodiment of this invention. It is a figure which shows the 1st modification of FIG. It is a figure which shows the 2nd modification of FIG.

-First embodiment-
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of the electromagnetic relay according to the first embodiment, and FIG. 2 is a longitudinal sectional view showing an assembly structure thereof. In the following, for the sake of convenience, front and rear, left and right directions and up and down directions are defined as shown in the figure, and the configuration of each part will be described accordingly. FIG. 2 shows a return state before the operation of the electromagnetic relay.

  The electromagnetic relay according to this embodiment includes a base block 1, an electromagnet 2 incorporated in the base block 1, an armature 3 driven by the electromagnet 2, and a contact portion 4 that opens and closes as the armature 3 moves. And a card 5 that transmits the movement of the armature 3 to the contact portion 4. The electromagnet 2 and the armature 3 constitute an electromagnet device, and the contact portion 4 opens and closes via the card 5 according to the operation of the electromagnet device.

  The base block 1 is an electrically insulative resin component, and is a base part 10 and a cylinder that is erected in a substantially arc shape from one left and right end part to the other right and left end part on the base part 10 and partially surrounds the electromagnet 1. The wall 11 is integrally formed. The front end of the cylindrical wall 11 is opened to incorporate the electromagnet 1. On the other hand, an end wall 12 interposed between the electromagnet 1 and the contact portion 4 is formed at the rear end portion of the cylindrical wall 11, and the end wall 12 connects the electromagnet 1 and the contact portion 4. Electrical insulation between them is ensured.

  As shown in FIG. 1, the electromagnet 2 includes a substantially cylindrical winding frame 21, a coil 22 mounted on the outer peripheral surface of the winding frame 21, and an iron core 23 inserted into the winding frame 21. The central axis of the coil 22 and the central axis of the iron core 23 are directed in the front-rear direction. The winding frame 21 is an electrically insulating resin molded product, and protrudes forward from a hollow barrel portion, flange portions 24a and 24b provided at both ends of the barrel portion in the front-rear direction, and a flange portion 24b on the front side. And a pair of terminal support portions 24c. A coil terminal 25 is press-fitted into each terminal support portion 24c, and both ends of a winding forming the coil 22 are connected to each coil terminal 25. Each coil terminal 25 is press-fitted into a pair of left and right grooves 13 provided at the front end of the base block 1 when the electromagnet 2 is incorporated into the base block 1.

  As shown in FIG. 2, the iron core 23 extends in the front-rear direction, and a head portion (magnetic pole portion) 23 a having a flat end surface is integrally formed at the front end portion thereof. It is exposed on the outer surface of the portion 24b. On the other hand, the rear end portion of the iron core 23 protrudes from the flange portion 24a of the winding frame 21, and a yoke 26 is connected to the protruding portion by, for example, caulking.

  The yoke 26 is a substantially L-shaped plate member made of, for example, magnetic steel, and its short portion extends vertically along the flange 24 a of the winding frame 2, and the long portion is the coil 22. The outside is extended in the front-rear direction. The front end portion 26a of the elongated portion of the yoke 26 is positioned vertically below the head portion 23a of the iron core 23, and the armature 3 is swingably connected to the end portion 26a. When the electromagnet 2 is assembled into the base block 1, the yoke 26 is press-fitted between a pair of left and right rail-like projections 14 provided inside the groove 13 of the base block 1 shown in FIG. 1.

  The armature 3 is a flat plate member made of, for example, magnetic steel, and is connected to the yoke 26 through a substantially L-shaped leaf spring 31 so as to be elastically movable relative to the armature 23. It is arrange | positioned facing. The armature 3 and the leaf spring 31 are fixed by, for example, caulking at the connecting portion 32, and the leaf spring 31 and the yoke 26 are engaged and fixed at, for example, the connecting portion 33. The leaf spring 31 functions as an elastic hinge between the yoke 26 and the armature 3, and biases the armature 3 in a direction away from the head 23 a of the iron core 23 (forward) by its own spring action.

  When the electromagnet 2 (electromagnet device) is not in operation, the armature 3 is brought into contact with the end portion 26a of the yoke 26 under the spring force of the leaf spring 31, so that the iron core as shown in FIG. 23 is held stationary at a return position separated from the head 23a by a predetermined distance. When the electromagnet 2 (electromagnet device) is actuated, the armature 3 resists the spring force of the leaf spring 31 around the engaging portion between the lower end portion thereof and the end portion 26a of the yoke 26 by the magnetic attraction force. It swings in the direction approaching the iron core head 23a (rearward) and is held stationary at an operating position described later.

  The contact part 4 has a fixed contact part and a movable contact part. The fixed contact portion includes a fixed contact member 41 formed of a conductive plate member punched out of a copper plate into a predetermined shape, for example. The fixed contact member 41 is provided integrally with the base block 1 by integral molding, and is disposed to face the end wall 12 of the cylindrical wall 11. More specifically, the fixed contact member 41 is substantially L-shaped, passes through the left end side of the base portion 10 of the base block 1 in the vertical direction, and rises along the end wall 12 of the cylindrical wall 11. And a second flat plate portion extending rightward from the upper end of the first flat plate portion. A fixed contact 42 is provided on the front surface of the tip of the second flat plate portion.

  The movable contact portion includes a base spring member 43 and a movable spring member 44 that is integrally coupled to the base spring member 43 through, for example, welding via the coupling portion 45. The base spring member 43 and the movable spring member 44 are constituted by, for example, conductive plate members punched into a predetermined shape from a thin phosphor bronze plate. The base spring member 43 is integrally formed with the base block 1 by integral molding, and passes through the right end side of the base portion 10 of the base block 1 in the vertical direction between the end wall 12 and the fixed contact member 41, and is cylindrical. The wall 11 is disposed to face the end wall 12.

  The movable spring member 44 has a substantially rectangular shape as a whole, a coupling portion 45 is provided at the lower right corner thereof, and a movable contact 46 is provided on the rear surface of the upper right corner so as to face the fixed contact 42. A notch 47 is provided in the left-right direction between the movable contact 46 and the coupling portion 45, and the movable spring member 44 is partially bent below the notch 47. For this reason, the movable spring member 44 can be easily elastically deformed in the front-rear direction with the coupling portion 45 as a fulcrum, and the movable contact 46 can be brought into contact with and separated from the fixed contact 42 by this elastic deformation. 4 can be opened and closed. The base spring member 43 and the movable spring member 44 may be formed integrally instead of being formed separately.

  The card 5 is an electrically insulating resin component, and has a generally rectangular frame shape by a pair of left and right vertical plates 51 extending in the front-rear direction and a pair of front and rear horizontal plates 52 extending in the left-right direction. There is no. The card 5 is arranged so as to face the base portion 10 above the base block 1 with the upper portion of the cylindrical wall 11 of the base block 1 accommodated inside the frame. A connecting portion 53 projects from the center of the rear end of the card 5 toward the rear.

  As shown in FIG. 2, a recess 48 (FIG. 1) at the center of the upper end of the movable spring member 44 is press-fitted into the bottom surface of the connecting portion 53, and the card 5 and the movable spring member 44 are integrally connected. As shown in FIG. 1, a through hole 49 is opened at the upper left corner of the movable spring member 44, and a projection (not shown) provided at the rear end of the card 5 is inserted into the through hole 49. This prevents the card 5 from being detached from the movable spring member 44.

  Engaging claws 54 are provided on the left and right sides of the front end of the card 5. The left and right end portions of the armature 3 are engaged with the engaging claws 54, and the card 5 and the armature 3 are integrally connected. As a result, the armature 3 and the movable spring member 44 are integrated via the card 5, the movable spring member 44 moves in the front-rear direction in conjunction with the swing of the armature 3 in the front-rear direction, and the contact portion 4 opens and closes. Operate. The card 5 is attached after the electromagnet 2, the armature 3, and the contact portion 4 are attached to the base block 1. After the card 5 is attached, a substantially box-shaped cover 6 that is an electrically insulating resin part is attached to the base block 1 via an adhesive, and the internal space of the electromagnetic relay is sealed.

  In the electromagnetic relay configured as described above, when an operating voltage (a moving voltage) is applied to the coil 22 of the electromagnet 2, the armature 3 is attracted to the iron core 23 against the spring force of the leaf spring 31. As a result, the card 5 is moved forward, the movable spring member 44 is elastically deformed, the movable contact 46 comes into contact with the fixed contact 42, and the electromagnetic relay is activated. On the other hand, when the applied voltage of the coil 22 falls below the open voltage, the armature 3 is separated from the iron core 23 by the spring force of the leaf spring 31, the card moves forward, the movable contact 46 is released from the fixed contact 42, The electromagnetic relay is in the return state. In this case, the open-circuit voltage varies due to individual differences (dimensional error), assembly errors, etc. for each component, and it is desirable to eliminate variations in the open-circuit voltage in order to stabilize the operation of the electromagnetic relay. Therefore, in the present embodiment, a gap is formed between the armature 3 and the iron core 23 as described below, and the electromagnetic relay is reliably returned to a predetermined open voltage.

  FIG. 3 is a cross-sectional view of the main part of the electromagnetic relay according to the first embodiment. FIG. 3 (a) shows a return state when the electromagnet 2 is not operated, and FIG. The operation states are respectively shown. In the return state, the armature 3 is separated from the iron core 23 by the spring force, whereas in the operating state, the armature 3 is attracted to the iron core 23 against the spring force. The armature 3 is bent rearward at a bending point 3a above the central axis of the iron core 23 and below the upper end portion of the iron core head 23a, and the rear surface of the armature 3 has a substantially square shape.

  In the return state shown in FIG. 3A, the armature 3 is completely separated from the iron core 23. In contrast, in the operation state shown in FIG. 3B, the rear surface of the armature 3 abuts on the upper end corner 23b of the iron core 23 above the bending point 3a, and the armature 3 and the front end surface of the iron core 23 are in contact with each other. A gap space GS is formed between them. The gap space GS functions as a resistance of a magnetic circuit formed by the iron core 23, the yoke 26, and the armature 3.

  The open circuit voltage depends on the gap amount of the gap space GS, and the open circuit voltage decreases as the gap amount increases. In this embodiment, since a part of the armature 3 is brought into contact with the corner portion of the iron core 23, the rear surface shape of the armature 3 and the shape of the iron core head 23a regardless of the assembly error of the iron core 23 and the armature 3 or the like. The gap amount can be set according to Therefore, the gap amount can be easily set, the gap amount can be set to the specified value with high accuracy, and the electromagnetic relay can be reliably returned to the predetermined open circuit voltage. In addition, since the gap space GS can be formed simply by bending the armature 3, processing for forming the gap space GS is easy without increasing the number of parts.

  The shape of the contact portion between the armature 3 and the iron core 23 is not limited to that shown in FIG. 4 to 6 show other examples of gap forming portions in which the armature 3 and the iron core 23 are in contact with each other, and a gap space GS is formed between the armature 3 and the iron core 23 adjacent to the contact portion. FIG.

  In FIG. 4, on the rear surface of the armature 3, a step portion 3c approaching the core head portion 23a is formed with a step 3b above the central axis of the core 23 and below the upper end portion of the core head portion 23a. Has been. 4B, when the electromagnet 2 is operated, the rear end surface of the stepped portion 3c comes into contact with the front end surface of the iron core 23, and a gap space GS is formed between the armature 3 and the front end surface of the iron core 23. It is formed.

  In FIG. 5, a protrusion 23c protruding forward is formed on the front end surface of the iron core 23 above the central axis of the iron core 23 and below the upper end of the iron core head portion 23a. As a result, as shown in FIG. 5B, when the electromagnet 2 is operated, the tip of the projection 23 c comes into contact with the rear surface of the armature 3, and a gap space GS is formed between the armature 3 and the front end surface of the iron core 23. Is done.

  In FIG. 6, a recess 23 d is formed on the inner periphery of the front end surface of the iron core 23. Thus, as shown in FIG. 6B, when the electromagnet 2 is operated, the rear surface of the armature 3 comes into contact with the peripheral edge portion of the front end surface of the iron core 23, and the gap space GS is formed by the recess 23d.

  When the step 3c, the protrusion 23c, and the recess 23d are formed at the contact portion between the armature 3 and the iron core 23 without bending the armature 3 as in the example shown in FIGS. Since the gap amount between the armature 3 and the front end face of the iron core 23 can be set directly and uniformly without obtaining the relationship between the bending shape and the gap amount, the gap amount can be easily set. 4 to 6, the stepped portion 3 c, the protruding portion 23 c, and the recessed portion 23 d are provided on one of the armature 3 and the iron core 23, but these are provided on the other of the armature 3 and the iron core 23. It may be provided in both.

-Second Embodiment-
A second embodiment of the present invention will be described with reference to FIGS. In the first embodiment, a gap space GS is formed between the armature 3 and the iron core 23 by bringing a part of the armature 3 and a part of the iron core 23 into contact with each other. In the embodiment, the gap space GS is formed between the armature 3 and the iron core 23 by restricting the movement of the armature 3 via the card 5. In addition, the same code | symbol is attached | subjected to the location same as FIGS. 1-6, and the difference with 1st Embodiment is mainly demonstrated below.

  7 and 8 are diagrams showing the configuration of the main part of the electromagnetic relay according to the second embodiment. FIG. 7 is a non-operating state of the electromagnet 2 in which the armature 3 is separated from the iron core 23 by a spring force. FIG. 8 shows the operating state (operating state) of the electromagnet 2 in which the armature 3 is attracted to the iron core 23 against the spring force. 7 (a) and 8 (a) are mainly schematic plan views of the card 5, and FIGS. 7 (b) and 8 (b) are cross-sectional views of main parts of the electromagnetic relay.

  The pair of left and right front plates 51 of the card 5 each have a substantially rectangular through hole 51a. Corresponding to these through holes 51a, on the upper surface of the cylindrical wall 11, a pair of right and left protrusions 11a projecting upward are provided, and each protrusion 11a is inserted into each through hole 51a. . The length in the front-rear direction of each protrusion 11a is shorter than the length in the front-rear direction of each through hole 51a.

  As shown in FIG. 7, when the electromagnet 2 is not in operation, the rear end surface of the protrusion 11a is in contact with the rear end edge of the through hole 51a. At this time, the armature 3 is biased completely forward by the leaf spring 1, and the movable contact 46 is separated from the fixed contact 42. For this reason, the swinging of the armature 3 forward is not limited by the card 5. Since the card 5 does not limit the forward swing of the armature 3, there may be a gap between the rear end surface of the projection 11a and the rear end edge of the through hole 51a.

  On the other hand, as shown in FIG. 8, when the electromagnet 2 is operated, after the movable contact 46 comes into contact with the fixed contact 42 and before the armature 3 comes into contact with the front end surface of the iron core 23, It abuts on the front edge of 51a. Therefore, the swinging of the armature 3 backward is limited by the card 5, and a gap space GS is formed between the armature 3 and the iron core 23.

  The gap amount of the gap space GS can be changed by adjusting the length of the through hole 51 a of the card 5. Therefore, for example, a plurality of cards 5 having different lengths of the through holes 51a are prepared in advance, and the gap amount can be accurately set by appropriately selecting from the cards. Thereby, an electromagnetic relay can be reliably made into a return state in a predetermined open circuit voltage. Since the card 5 is attached after the electromagnet 2, the armature 3 and the contact portion 4 are attached to the base block 1, it is not necessary to remove other parts when replacing the card, and the adjustment of the gap amount by replacing the card is easy. .

  In the above, the protrusion 11a is provided on the upper surface of the cylindrical wall 11 to restrict the movement of the card 5, but the configuration for restricting the movement of the card 5 is not limited thereto. FIG. 9 is a diagram showing a modification of the second embodiment, in which FIG. 9A shows the non-operating state of the electromagnet 2 and FIG. 9B shows the operating state. In FIG. 9, a resin restriction plate 15 is erected on the upper surface of the base portion 10 between the movable spring member 44 and the fixed contact member 41 by, for example, integral molding with the base block 1.

  As shown in FIG. 9A, when the electromagnet 2 is not operated, the limiting plate 15 is separated from the movable spring member 44 and does not limit the movement of the card 5 at all. On the other hand, as shown in FIG. 9B, when the electromagnet 2 is operated, the limit plate 15 contacts the rear surface of the movable spring member 44 with the movable contact 46 in contact with the fixed contact 42, and the card 5 is moved backward. Restrict movement. As a result, a gap space GS is formed between the armature 3 and the iron core 32.

  The gap amount of the gap space GS can be changed by adjusting the length in the front-rear direction between the connecting portion 53 of the card 5 and the engaging claw 54. Therefore, for example, a plurality of cards 5 having different lengths between the connecting portion 53 and the engaging claw 54 are prepared in advance, and the gap amount can be accurately set by appropriately selecting from the cards 5. Thereby, an electromagnetic relay can be reliably made into a return state in a predetermined open circuit voltage.

  Instead of restricting the movement of the card 5, the movement of the armature 3 can also be restricted directly. FIG. 10 is a cross-sectional view of the main part showing an example thereof, FIG. 10 (a) shows the non-operating state of the electromagnet 2, and FIG. 10 (b) shows the operating state. In FIG. 10, a protrusion 6 a is provided on the inner surface of the upper wall of the cover 6 facing downward.

  As shown in FIG. 10A, when the armature 3 is swung forward by the spring force of the leaf spring 31, the armature 3 is separated from the protrusion 6a. On the other hand, as shown in FIG. 10B, when the armature 3 swings backward by the operation of the electromagnet 2, the upper end portion of the armature 3 comes into contact with the protrusion 6a. Thereby, the backward movement of the armature 3 is limited, and a gap space GS is formed between the armature 3 and the iron core 23.

  The gap amount of the gap space GS can be changed by adjusting the position where the protrusion 6a of the cover 6 is provided. Therefore, for example, the gap amount can be accurately set by preparing in advance a plurality of covers 6 with different positions of the protrusions 6a and selecting them appropriately. Thereby, an electromagnetic relay can be reliably made into a return state in a predetermined open circuit voltage. Since the cover 6 is finally attached to the base block 1, it is not necessary to remove other parts of the electromagnetic relay when replacing the cover, and the adjustment of the gap amount is easy.

  In the first embodiment, the movement of the armature 3 is transmitted to the contact portion 4 via the card 5 so that the contact portion 4 opens and closes as the armature 3 moves. The contact portion 4 may be opened / closed with the movement of the armature 3 without the intervention. Although the armature 3 is supported at the end of the yoke 26 so as to be swingable, the armature 3 is attracted to the iron core 23 according to the voltage applied to the coil 11 or is supported so as to be separated from the iron core 23. If present, the armature 3 may be supported by another configuration.

  In the second embodiment, the card 11 is provided with a protruding portion 11a as a protruding portion on the upper surface of the cylindrical wall 11, or a restriction plate 15 as a contact movement limiting portion is erected on the upper surface of the base portion 10. Although the movement of 5 is restricted, the movement restriction means is not limited to this. The base block 10 as the base member and the card 5 as the transmission member may have any configuration. In FIG. 10, the protrusion 6 a is provided on the inner upper surface of the cover 6 as a cover member, but when the armature 3 is attracted by the iron core 23, it comes into contact with the armature 3, and the iron core 23 and the armature 3 As long as the gap space GS is formed between them, the configuration of the armature movement restriction unit is not limited to this. That is, the present invention is not limited to the electromagnetic relay according to the embodiment as long as the features and functions of the present invention can be realized.

DESCRIPTION OF SYMBOLS 1 Base block 2 Electromagnet 3 Armature 3a Bending point 3c Step part 4 Contact part 5 Card 6 Cover 6a Protrusion part 11 Cylindrical wall 11a Protrusion part 15 Limiting plate 23 Iron core 23c Protrusion part 23d Concavity 26 Relay 41 Fixed contact member 44 Movable Spring member 51a Through hole GS Gap space

Claims (10)

An electromagnet in which an iron core is attached to a winding frame on which a coil is mounted;
An armature that is movably disposed opposite to the end face of the iron core, and is attracted to the iron core or separated from the iron core in accordance with a voltage applied to the coil;
In an electromagnetic relay comprising a contact portion that opens and closes as the armature moves,
The iron core and the armature are:
The armature has a gap forming portion that contacts with each other when the armature is attracted to the iron core and forms a gap space between the contact surface and the end surface of the iron core adjacent to the contact portion. Electromagnetic relay. The electromagnetic relay according to claim 1,
A yoke extending outside the coil substantially parallel to the axis of the iron core and having one end connected to one end of the iron core;
The said armature is supported by the other end part of the said yoke so that rocking | fluctuation is possible, and it extends facing the end surface by the side of the other end part of the said iron core, The electromagnetic relay characterized by the above-mentioned. The electromagnetic relay according to claim 2,
The electromagnetic relay according to claim 1, wherein the armature has a bent shape that is bent toward an end surface of the iron core. The electromagnetic relay according to claim 2,
At least one of the armature and the iron core has a step portion that approaches the other of the armature and the iron core. The electromagnetic relay according to claim 2,
At least one of the armature and the iron core has a protrusion that protrudes toward the other of the armature and the iron core. The electromagnetic relay according to claim 2,
At least one of the armature and the iron core has a recess on a surface facing the armature and the iron core. A base member;
An electromagnet attached to the base member and having an iron core attached to a winding frame on which a coil is attached;
An armature disposed on one end side of the electromagnet so as to be opposed to the end face of the iron core, attracted to the iron core according to a voltage applied to the coil, or separated from the iron core;
A contact portion that is disposed on the other end side of the electromagnet and that opens and closes as the armature moves;
In the electromagnetic relay provided with a transmission member extending from one end side of the electromagnet to the other end side so as to be relatively movable with respect to the base member and transmitting the movement of the armature to the contact portion.
The electromagnetic wave further comprising a movement restricting means for restricting the movement of the transmission member when the armature is attracted to the iron core and forming a gap space between the end surface of the iron core and the contact. relay. The electromagnetic relay according to claim 7,
The base member has a cylindrical wall surrounding the winding frame,
The movement restriction means includes
A protrusion protruding from the cylindrical wall;
A hole formed in the transmission member;
The hole portion has a length that is longer than the length of the protruding portion in the moving direction of the transmission member so that the movement of the transmission member is restricted by contacting the end face of the hole portion when the armature is attracted to the iron core. Is also formed in a long length. The electromagnetic relay according to claim 7,
The contact portion includes a fixed contact member having a fixed contact portion, and a movable contact member having a movable contact portion that moves as the armature moves.
The movement restricting means is fixed to the base member, contacts the movable contact member when the armature is attracted to the iron core, and restricts the movement of the movable contact member after the opening and closing operation of the contact portion. An electromagnetic relay having a contact movement restricting portion for performing the operation. A base member;
An electromagnet attached to the base member and having an iron core attached to a winding frame on which a coil is attached;
An armature that is movably disposed opposite to the end face of the iron core, and is attracted to the iron core or separated from the iron core in accordance with a voltage applied to the coil;
A contact portion that opens and closes as the armature moves;
In an electromagnetic relay that is attached to the base member and includes a cover member that houses the electromagnet, the armature, and the contact portion.
When the armature is attracted to the iron core, the cover member abuts on the armature to limit the movement of the armature, and forms a gap space between the end surface of the iron core and the armature An electromagnetic relay, characterized by having an armature movement restricting portion.

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