JP6690459B2 - Electromagnetic relay - Google Patents

Description

  The present invention relates to an electromagnetic relay having a self-holding solenoid drive unit.

  The electromagnetic relay disclosed in Patent Document 1 includes a driven contact, a driving contact movable with respect to the driven contact, an off position in which the driven contact and the driving contact are in a non-contact state, a driven contact and the driving contact. And a self-holding solenoid drive part having a movable part that is movable to an on position in which the movable part and the contact part are in contact with each other, and the solenoid drive part holds the movable part in the on position and the off position. .

  Further, in the electromagnetic relay, the drive contact is supported by the drive contact piece, and the drive contact is brought into contact with or separated from the driven contact by elastically deforming and bending the drive contact piece. Further, in the electromagnetic relay, for example, when the driving contact and the driven contact are switched from the non-contact state to the contact state, the movable portion is moved from the off position to the on position via the overshoot position beyond the on position. It is moved and held in the on position.

JP, 2016-58178, A

  By the way, for example, in an electromagnetic relay used for a smart meter or the like, a high current (for example, 60 A) flows by opening and closing a contact, and the high current causes the conduction path to generate heat at a high temperature. As one method of suppressing this heat generation, it is conceivable to stack two driving contact pieces that support the driving contact.

  However, if the two driving contact pieces are stacked, the rigidity becomes high, so that the movable portion cannot be moved to the overshoot position by the solenoid driving portion, and there is a possibility that the holding position of the movable portion cannot be changed. is there. In such a case, it cannot operate as a self-holding type electromagnetic relay.

  Then, an object of the present invention is to provide an electromagnetic relay provided with a self-holding type solenoid drive part which can move certainly to an overshoot position.

The electromagnetic relay of the present invention is
A fixed contact side terminal having a fixed contact,
A movable contact arranged so as to face the fixed contact is provided, and the movable contact has a movable contact piece that elastically deforms so as to come into contact with the fixed contact, the movable contact is arranged in parallel with the fixed contact side terminal, and A movable contact side terminal that is electrically independent of the fixed contact side terminal,
A solenoid actuator; and a movable portion capable of reciprocating in the contact / separation direction in which the movable contact comes into contact with and separates from the fixed contact by the solenoid actuator, and is in contact with the movable contact piece in the contact / separation direction. A self-holding solenoid drive unit that has a movable contact with or separates from the fixed contact by reciprocating movement of the movable unit in the contacting and separating direction;
Equipped with
The movable contact piece has, at its end portion, a contact portion with which the movable portion of the solenoid drive portion can contact, and the movable contact with respect to the fixed contact in a state where the movable contact is in contact with the fixed contact. A rigid separation structure that elastically deforms the contact portion more than a portion to which the movable contact is fixed when the movable portion is moved in a contact direction.
In the return state in which the movable portion is held with the movable contact separated from the fixed contact, the movable portion is located at the non-contact position, and the movable contact is held in contact with the fixed contact. In the operating state in which the movable portion is located at the first contact position, a second contact position between the non-contact position and the first contact position is farther from the non-contact position than the first contact position. Is configured to move through
The contact portion is located in the non-holding position in the return state, is located in the holding position in the operating state, and is further from the non-holding position than the holding position when the movable portion is in the second contact position. It is configured to be located at the overshoot position.

  According to the electromagnetic relay of the present invention, the movable portion is moved to the end of the movable contact piece of the movable contact side terminal in the direction in which the movable contact contacts the fixed contact while the movable contact contacts the fixed contact. It has a rigid separation structure that elastically deforms the contact portion more than the portion where the movable contact is fixed when the contact is made. As a result, the contact portion has a non-holding position that is the position of the contact portion when the fixed contact and the movable contact are separated, and the position of the contact portion when the fixed contact and the movable contact are held in contact with each other. Therefore, even if the movable contact piece has a high rigidity, the movable portion can be reliably elastically deformed so as to be movable between the holding position and the overshoot position farther from the non-holding position than the holding position. , And can move between the first contact position and the non-contact position through the second contact position. As a result, it is possible to provide an electromagnetic relay including a self-holding solenoid drive unit that can reliably move to the overshoot position.

The top view which shows the state which removed the housing cover from the housing case of the electromagnetic relay in the reset state of 1st Embodiment of this invention. The top view which shows the operation state of the electromagnetic relay of FIG. The perspective view which shows the edge part of the movable contact piece of the electromagnetic relay of FIG. The perspective view which shows the movable plate of the electromagnetic relay of FIG. FIG. 2 is a sectional view of an operating state for explaining the configuration of a solenoid drive unit of the electromagnetic relay in FIG. 1. FIG. 6 is another cross-sectional view for explaining the configuration of the solenoid drive unit of the electromagnetic relay in FIG. 1, following FIG. 5. FIG. 7 is a partially enlarged view for explaining the configuration of the solenoid drive unit of the electromagnetic relay in FIG. 1, following FIG. 6. The side surface schematic diagram which shows the contact part of the movable contact piece located in the non-holding position of the electromagnetic relay of FIG. The side surface schematic diagram which shows the contact part of the movable contact piece located in the overshoot position of the electromagnetic relay of FIG. The side surface schematic diagram which shows the contact part of the movable contact piece located in the holding position of the electromagnetic relay of FIG. FIG. 3 is a first development view for explaining the operation of the solenoid drive unit of the electromagnetic relay in FIG. 1. FIG. 12 is a second development view for explaining the operation of the solenoid drive unit of the electromagnetic relay in FIG. 1, following FIG. 11. FIG. 13 is a third development view for explaining the operation of the solenoid drive section of the electromagnetic relay in FIG. 1, following FIG. 12. FIG. 14 is a fourth development view for explaining the operation of the solenoid drive unit of the electromagnetic relay in FIG. 1, following FIG. 13. FIG. 15 is a fifth development view for explaining the operation of the solenoid drive section of the electromagnetic relay in FIG. 1, following FIG. 14. FIG. 17 is a sixth development view for explaining the operation of the solenoid drive section of the electromagnetic relay in FIG. 1, following FIG. 16. The perspective view which shows the other example of the movable contact piece of the electromagnetic relay of FIG. The perspective view which shows the other example of the movable plate of the electromagnetic relay of FIG. The perspective view which shows another example of the movable contact piece of the electromagnetic relay of FIG. The top view which shows the movable contact piece of the return state of the electromagnetic relay of 2nd Embodiment of this invention. FIG. 21 is a plan view showing a movable contact piece in an operating state of the electromagnetic relay of FIG. 20. The plane schematic diagram which shows the solenoid actuator of the solenoid drive part of the electromagnetic relay of 3rd Embodiment of this invention. The figure which shows the relationship between the size of the collar part of the movable iron core of the solenoid drive part of the electromagnetic relay of FIG.

  An embodiment of the present invention will be described below with reference to the accompanying drawings. In the following description, terms indicating a specific direction or position (eg, terms including “upper”, “lower”, “right”, and “left”) are used as necessary, but use of those terms Is for facilitating the understanding of the invention with reference to the drawings, and the technical scope of the present invention is not limited by the meanings of the terms. Further, the following description is merely an exemplification in nature, and is not intended to limit the present invention, its application, or its application. Furthermore, the drawings are schematic, and the ratios of the respective dimensions and the like do not always match the actual ones.

(First embodiment)
As shown in FIG. 1, the electromagnetic relay 100 of the first embodiment of the present invention includes a fixed contact side terminal 10 having conductivity, and a movable contact side having conductivity and arranged in parallel with the fixed contact side terminal 10. A terminal 20 and a self-holding solenoid drive unit 30 are provided. The fixed contact side terminal 10 has a fixed contact 11, and the movable contact side terminal 20 has a movable contact 23 arranged so as to face the fixed contact 11.

  In addition, a part of the fixed contact side terminal 10 and a part of the movable contact side terminal 20 and the solenoid drive unit 30 are housed inside the housing 1 having an insulating property, as an example.

  Further, the horizontal direction in FIG. 1 is the X direction, and the vertical direction in FIG. 1 is the Y direction. Further, a direction orthogonal to both the X direction and the Y direction is the Z direction.

  The housing 1 has a substantially rectangular box shape as shown in FIGS. 1 and 2. The housing 1 includes a housing case 2 having therein a housing recess 4 for housing a part of the fixed contact side terminal 10 and the movable contact side terminal 20 and the solenoid drive unit 30, and a housing cover that covers the housing case 2 (see FIG. (Not shown) and.

  1 shows the electromagnetic relay 100 in the return state in which the movable contact 23 is separated from the fixed contact 11, and FIG. 2 shows the electromagnetic relay 100 in the operation state in which the movable contact 23 contacts the fixed contact 11. Is shown. Here, the return state is a state in which the movable contact 23 is held in a state of being separated from the fixed contact 11, and the operating state is held in a state of the movable contact 23 in contact with the fixed contact 11. It is in a state of being.

  The fixed contact side terminal 10 is fixed to the left end of the housing case 2, and a part thereof extends inside the housing case 2 along the left side wall 3. The fixed contact 11 is fixed to the surface of the fixed contact side terminal 10 located in the housing recess 4 on the right side in the X direction of the tip end (upper end in the Y direction).

  As shown in FIGS. 1 and 2, the movable contact side terminal 20 includes a terminal portion 21 arranged substantially parallel to the fixed contact side terminal 10, and an upper end portion 24 of the terminal portion 21 (upper end portion in the Y direction). ), And a movable contact piece 22 extending upward from the upper end 24 in the Y direction. The movable contact side terminal 20 is provided electrically independent of the fixed contact side terminal 10.

  The terminal portion 21 is provided such that its upper end portion 24 is located below the center of the accommodation recess 4 in the Y direction.

  The movable contact piece 22 has a movable contact 23 fixed so as to face the fixed contact 11 on the surface of the upper end portion thereof facing left in the X direction, and the movable contact 23 is elastically deformed so as to be able to contact the fixed contact 11. . That is, the movable contact 23 is arranged so as to face the fixed contact 11, and the movable contact piece 22 comes into contact with the fixed contact 11 by elastically deforming and bending.

  Further, the movable contact piece 22 has a contact / separation direction (X) in which the movable contact 23 contacts and separates the two electrically conductive elastically deformable first plate member 22 a and second plate member 22 b with respect to the fixed contact 11. Direction), and is inclined so as to be separated from the left side wall 3 of the housing case 2 toward the upper side in the Y direction. In the vicinity of the lower end of the movable contact piece 22 in the longitudinal direction (Y direction), a curved portion 25 that protrudes rightward in the X direction in a U shape is provided. By the curved portion 25, the amount of bending of the movable contact piece 22 when the movable contact piece 22 is elastically deformed is absorbed and alleviated, and smooth operation characteristics can be secured.

  In addition, as shown in FIG. 3, the upper end portion 26 of the movable contact piece 22 is provided with a low lamination area 26a in which the second plate member 22b is not overlapped in the contacting / separating direction (X direction) of the first plate member 22a. Has been. In the low stacking region 26a, a rectangular first cut portion 41, a rectangular second cut portion 42, and a rectangular third cut portion 43 which extend in a direction intersecting the contact and separation direction of the movable contact 23, Two contact portions 51, 52 adjacent to these cut portions 41, 42, 43 are provided. The first cut portion 41, the second cut portion 42, and the third cut portion 43 are examples of a rigid separation structure.

  The first cut portion 41 is provided above the movable contact 23 in the Y direction and in the middle in the lateral direction (Z direction) of the movable contact piece 22 and extends in the lateral direction of the movable contact piece 22. The second notch 42 and the third notch 43 are provided at intervals in the lateral direction of the movable contact 23 and extend in the longitudinal direction (Y direction) of the movable contact piece 22. The upper end of each of the second cut portion 42 and the third cut portion 43 is continuous with both ends of the movable contact piece 22 of the first cut portion 41 in the lateral direction.

  As described above, the movable contact 23 comes into contact with the fixed contact 11 by providing the first cut portion 41, the second cut portion 42, and the third cut portion 43, which are examples of the rigid separation structure. In this state, when the movable portion 31 is moved in the direction in which the movable contact 23 comes into contact with the fixed contact 11 (leftward in the X direction), the contact portions 51 and 52 are elastically deformed more than the portion where the movable contact 23 is fixed. Can be made.

  The contact portions 51, 52 are respectively arranged at both ends in the lateral direction of the movable contact piece 22, and in the plan view seen from the contact / separation direction (X direction) of the movable contact 23, the longitudinal direction of the movable contact piece 22. It has a substantially L-shape that is symmetrical with respect to the center line extending in the direction. Further, each of the contact portions 51 and 52 is configured by the first plate member 22a on the movable contact 23 side of the movable contact piece 22, and the movable plate 33 that constitutes the movable portion of the solenoid drive unit 30 described later comes into contact with each other. That is, the dimension (plate thickness) of each contact part 51, 52 in the contact / separation direction (X direction) is adjacent to the first to third cutout parts 41, 42, 43 of the movable contact piece 22, and the first plate. The second plate member 22b is overlapped in the contact / separation direction of the member 22a, and is smaller than the size in the contact / separation direction of the non-contact portion 53 where the movable plate 33 does not contact.

  As described above, the contact portions 51 and 52 have a smaller plate thickness than the non-contact portion 53 to which the movable contact 23 is fixed. Therefore, as compared with the non-contact portion 53, elastic deformation of the movable contact 23 in the contact / separation direction (X direction) is facilitated. As a result, the contact portions 51 and 52 are fixed to the non-holding position IV (see FIG. 8), which is the position of each contact portion 51 and 52 when the fixed contact 11 and the movable contact 23 described later are separated. The holding position V (see FIG. 10), which is the position of each contact portion 51, 52 when the 11 and the movable contact 23 are held in contact with each other, and the overshoot position VI farther from the non-holding position than the holding position. (See FIG. 9).

  The notches 41, 42, and 43 are not limited to mere cuts (slits), and the width (dimension in the Z direction) of a contact portion, such as a groove or a notch, which is elastically deformed by the contact of the movable plate 33 is movable contact. A configuration that can be made smaller than the dimension of the piece 22 in the lateral direction is included.

  As shown in FIGS. 1 and 2, the solenoid driving unit 30 is capable of reciprocating in a contact / separation direction (X direction) in which the movable contact 23 contacts and separates from the fixed contact 11 with the solenoid actuator 30a. It has a movable portion 31 that can come into contact with the movable contact piece 22 in the contact and separation direction. In the solenoid drive unit 30, the movable contact 23 comes into contact with or separates from the fixed contact 11 by the reciprocating movement of the movable unit 31 in the contacting / separating direction, and at the same time, the movable unit 31 serves as a self-holding solenoid drive unit. It can also be held at the position.

  Specifically, the solenoid drive unit 30 includes a solenoid actuator 30a, a ratchet mechanism unit 30b connected in series to the solenoid actuator 30a, and an arm unit 32 provided between the ratchet mechanism unit 30b and the movable contact piece 22. , A movable plate 33 connected to the upper end of the arm 32. The ratchet mechanism section 30b, the arm section 32, and the movable plate 33 constitute the movable section 31. The movable part 31 has a first contact position II (see FIGS. 2 and 10) that is the position of the movable part 31 in the operating state and a non-contact position I (see FIG. 1) that is the position of the movable part 31 in the return state. Between the first contact position and the second contact position III (see FIG. 9) farther from the non-contact position than the first contact position, and is held by the non-contact position I and the first contact position II. It is possible.

  As shown in FIG. 5, the solenoid actuator 30a includes an insulating housing 61, a spool 62 housed in the housing 61 and provided with a through hole 62a, and a coil 63 wound around the outer circumference of the spool 62. It has a substantially columnar movable iron core 64 arranged in the through hole 62 a of the spool 62, and a yoke 65 that covers the coil 63. The through hole 62 a of the housing 61 extends in the direction (X direction) in which the movable contact 23 comes in contact with and separates from the fixed contact 11. A coil terminal (not shown) is connected to the coil 63. Further, the movable iron core 64 is arranged so as to be movable in a direction (X direction) in which the movable contact 23 comes into contact with and separates from the fixed contact 11.

  An electromagnetic force is generated by supplying a current to the coil 63, and the movable iron core 64 is moved in a direction in which the movable contact 23 contacts the fixed contact 11 (leftward in the X direction).

  The end of the movable iron core 64 on the ratchet mechanism 30b side (the end on the left side in the X direction) is located in a through hole 91a of the ratchet mechanism 30b, which will be described later, and serves as a locking member 67 of the ratchet mechanism 30b, which will be described later. It has a pressing member 66 provided so as to be contactable. Further, the end portion of the movable iron core 64 on the right side in the X direction is located outside the housing 61 and has a circular brim portion 68 extending in the YZ plane. By adjusting the mounting position of the circular collar portion 68, the stroke amount of the movable iron core 64 can be adjusted.

  The pressing member 66 has a substantially cylindrical shape and, as shown in FIG. 6, is arranged in a through hole 91a in a housing 91 of a ratchet mechanism portion 30b described later. The pressing member 66 has a plurality of inclined surfaces 82 and 83 at its tip. Each of the plurality of inclined surfaces 82 and 83 has a different inclination direction and is alternately arranged in the circumferential direction to form a pair of first inclined surfaces 82 and a second inclined surface that are configured to form an upward convex triangular hypotenuse. It is composed of the inclined surface 83, and comes into contact with the locking member 67 as the movable iron core 64 moves to the left side in the X direction.

  A plurality of rectangular guide protrusions 86 extending in the X direction are provided on the outer peripheral surface of the tip of the pressing member 66. The guide protrusions 86 are arranged at intervals in the circumferential direction and are positioned in the guide grooves 93 (see FIG. 7) formed on the inner peripheral surface of the through hole 91a of the ratchet mechanism portion 30b, which will be described later, and are pressed. The movable contact 23 guides the member 66 in a direction (X direction) in which the movable contact 23 comes into contact with and separates from the fixed contact 11.

  As shown in FIG. 5, the ratchet mechanism portion 30b includes an insulating housing 91 having a through hole 91a, a locking member 67, a coil spring 95, and a connection member provided in series in the through hole 91a. And a member 96. The locking member 67 is arranged at the end of the through hole 91a closest to the solenoid actuator 30a (the end on the right side in the X direction). The connecting member 96 is arranged at the end opposite to the end facing the solenoid actuator 30a (the end on the left side in the X direction). The coil spring 95 is arranged between the locking member 67 and the connecting member 96 in a state of being in contact with the locking member 67.

  The through hole 91a of the housing 91 extends in the direction (X direction) in which the movable contact 23 comes in contact with and separates from the fixed contact 11, and is continuous with the through hole 62a of the solenoid actuator 30a. As shown in FIG. 7, on the inner peripheral surface of the through hole 91a, a plurality of holding convex portions 92 extending in the X direction, and the first guide groove 93 and the second guide arranged between the holding convex portions 92 are provided. A groove 94 is provided. A plurality of sixth inclined surfaces 92a and a plurality of seventh inclined surfaces 92b adjacent to the sixth inclined surfaces 92a and inclined in the same direction are provided on the upper end portion (upper end portion in FIG. 7) of the holding convex portion 92. And a plurality of step portions 92c (see FIG. 8) arranged between each sixth inclined surface 92a and each seventh inclined surface 92b. Further, the first guide grooves 93 and the second guide grooves 94 are arranged alternately. The first guide groove 93 has a greater diametrical depth than the second guide groove 94, and accommodates each guide protrusion 86 of the pressing member 66 and each engagement protrusion 81 of the engagement member 67 described later. It is possible. The second guide groove 94 can accommodate the guide protrusions 86 of the pressing member 66, but cannot accommodate the lock protrusions 81 of the retaining member 67.

  The locking member 67 has a substantially cylindrical shape, and as shown in FIG. 6, a plurality of locking protrusions 81 extending in the X direction are provided on the outer peripheral surface thereof. The locking protrusions 81 are arranged at equal intervals in the circumferential direction. Further, a plurality of inclined surfaces 84 and 85 are provided on the lower end (lower end in FIG. 6) of the locking projection 81. Each of the plurality of inclined surfaces 84 and 85 has a different inclination direction and is arranged alternately in the circumferential direction to form a downwardly convex triangular hypotenuse. It is composed of an inclined surface 85. The third sloping surface 84 faces the first sloping surface 82 in the circumferentially offset state, and the fourth sloping surface 85 faces the second sloping surface 83 in the circumferentially offset state. is doing. Further, each locking convex portion 81 has a fifth inclined surface 81a provided at the lower end (lower end in FIG. 6). The fifth inclined surface 81a has the same inclination direction as the third inclined surface 84.

  Each locking projection 81 is located in the guide groove 93 (see FIG. 11) formed on the inner peripheral surface of the through hole 91 a, and the movable member 23 contacts the pressing member 66 with the fixed contact 11. Also, the guide is provided in the opening direction (X direction).

  The coil spring 95 comes into contact with a step portion 91b provided at an end portion on the left side in the X direction of the through hole 91a to separate the locking member 67 from the movable contact 23 relative to the fixed contact 11 (right direction in the X direction). ). With the coil spring 95, in a state where no voltage is applied to the coil 63 of the solenoid actuator 30a, the movable iron core 64 is pressed rightward in the X direction to be positioned at the position (return position) shown in FIG. There is.

  The connecting member 96 has a protrusion 96a that can project from an opening 91c provided at the left end of the through hole 91a in the X direction and can be housed in the through hole 91a, and is connected to the locking member 67. It can be moved back and forth in the X direction. The tip of the protrusion 96a is connected to the middle portion of the arm 32. That is, the connecting member 96 connects the movable iron core 64 and the arm portion 32 via the locking member 67 and the coil spring 95. When a voltage is applied to the coil 63 of the solenoid actuator 30a and the coil spring 95 is pressed to the left in the X direction of FIG. 1 by the locking member 67 and contracted, the connecting member 96, as shown in FIG. The protrusion 96a projects from the opening 91c to the outside of the housing 91. When no voltage is applied to the coil 63 of the solenoid actuator 30a, the coupling member 96 moves to the right in the X direction by the urging force of the coil spring 95, so that the projection 96a penetrates the through hole. It is accommodated in 91a.

  As shown in FIGS. 1 and 2, the arm portion 32 extends along the Y direction and includes a rotation support portion 36 provided on the Y direction lower side of the end portion on the left side in the X direction of the ratchet mechanism portion 30b. It is rotatably supported by the housing case 2 via the. The arm portion 32 is configured to rotate forward and backward about the rotation support portion 36 by the reciprocating movement of the projection portion 96a of the connecting member 96 of the ratchet mechanism portion 30b in the X direction.

  As shown in FIGS. 1 and 2, the movable plate 33 is provided on the Y direction upper side of the arm portion 32, and the movable contact 23 contacts the fixed contact 11 by a guide portion (not shown) provided in the housing case 2. Further, the movable contact piece 22 is arranged so as to be capable of reciprocating in the contacting / separating direction (X direction) for opening and closing and simultaneously contacting the contact portions 51, 52 of the movable contact piece 22. As shown in FIG. 4, the movable plate 33 has a rectangular plate shape, and has a pair of protrusions 34a and 34b provided at the left end in the X direction and a through hole 35 penetrating the movable plate 33 in the Y direction. have.

  The pair of protrusions 34 a and 34 b are respectively provided at both ends in the Z direction of the movable plate 33, protrude in the X direction from the left side surface in the X direction, and contact the contact portions 51 and 52 of the movable contact piece 22, respectively. To do. The upper end of the arm 32 is inserted into the through hole 35. As a result, the arm portion 32 and the movable plate 33 are connected to each other, and the rotation of the arm portion 32 causes the movable plate 33 to reciprocate in the X direction. A gap is provided between the inner wall surface of the through hole 35 and the upper end of the arm 32, and the gap allows the arm 32 to move in the Y direction due to the rotation.

  Next, the operation of the electromagnetic relay 100 will be described. 11 to 16 are developed views in which the inner peripheral surface of the through hole 91a of the ratchet mechanism portion 30b is developed.

  In the restored electromagnetic relay 100 shown in FIG. 1, when a current is supplied to the coil 63 of the solenoid actuator 30a, the movable portion 31 starts moving from the non-contact position I toward the second contact position III. That is, the electromagnetic force generated in the solenoid actuator 30 a moves the movable iron core 64 in the contact direction in which the movable contact 23 contacts the fixed contact 11 (leftward in the X direction in FIG. 1), and the locking member 67 via the pressing member 66. In the contact direction.

  The locking member 67 pushed by the movable iron core 64 moves in the contact direction to compress the coil spring 95, as shown in FIG. As a result, the connecting member 96 is moved in the contact direction, and the protrusion 96a is projected from the opening 91c of the housing 91 of the ratchet mechanism 30b to the outside of the housing 91.

  The protruding portion 96a protruding from the opening 91c of the ratchet mechanism portion 30b rotates the arm portion 32 in the contact direction about the rotation support portion 36 to move the movable plate 33 connected to the upper end portion of the arm portion 32. Move in the contact direction. The movable plate 33, which has moved leftward in the X direction, pushes the contact portions 51 and 52 of the movable contact piece 22 through the pair of protrusions 34a and 34b to bring the movable contact 23 into contact with the fixed contact 11 as shown in FIG. Let

  At this time, in the locking member 67, as shown in FIG. 6, each third inclined surface 84 is pushed by each first inclined surface 82 of the pressing member 66, and as shown in FIG. 11, along the respective guide grooves 93. Move in the A1 direction (contact direction). Then, when the movable contact 23 and the fixed contact 11 come into contact with each other, the fifth inclined surface 81a at the lower end (the lower end in FIG. 11) of each locking convex portion 81 of the locking member 67 is inside the through hole 91a. The holding convex portions 92 are located below the sixth inclined surface 92a (lower side in FIG. 11).

  The contact portions 51 and 52 of the movable contact piece 22 are located at the non-holding position IV shown in FIG. 8 until the movable contact 23 and the fixed contact 11 come into contact with each other. This non-holding position IV is the position of each contact portion 51, 52 when moving together with the non-contact portion 53.

  Even after the movable contact 23 and the fixed contact 11 are in contact with each other, the movable iron core 64 keeps the movable contact 23 and the fixed contact 11 in contact with each other. The movement in the contact direction is continued until the fifth inclined surface 81a of 81 reaches the upper end (upper end in FIG. 12) of the guide groove 93.

  When the fifth inclined surface 81a of each locking convex portion 81 of the locking member 67 moves to the upper end of each guide groove 93 (upper end in FIG. 12), that is, the movable portion 31 makes the second contact shown in FIG. When moving to the position III, as shown in FIG. 12, the locking member 67 moves in the A3 direction (inclining direction of the fifth inclined surface 81a or the sixth inclined surface 92a), and the fifth inclination of each locking convex portion 81. The locking member 67 rotates until the surface 81a and the sixth inclined surface 92a of each holding convex portion 92 face each other. This is because the first inclined surface 82 and the third inclined surface 84 are displaced from each other in the circumferential direction as shown in FIG. 6, so that the third inclined surface 84 of the locking member 67 is the first inclined surface 82. This is because it slides in the A2 direction (the inclination direction of the first inclined surface 82 or the third inclined surface 84) along.

  When the movable portion 31 is located at the second contact position III, the movable contact 23 and the fixed contact 11 remain in contact with each other, and the movable contact piece 22 includes the pair of protrusions 34 a and 34 b of the movable plate 33. Only the contact portions 51 and 52 that are in contact with are elastically deformed. The contact portions 51 and 52 of the movable contact piece 22 are located at the overshoot position VI shown in FIG. 9 when the fifth inclined surface 81a of each locking projection 81 reaches the upper end of each guide groove 93. . The overshoot position VI is the position of each contact portion 51, 52 at the limit position in the contact direction in which the movable iron core 64 can move. At the overshoot position, the contact portions 51 and 52 rotate in the approach direction (leftward in the X direction in FIG. 9) around the position P close to the non-contact portion 53 as a fulcrum, and are fixed as compared with the non-holding position in FIG. It is located near the contact 11. Further, even at this overshoot position, the movable contact 23 and the fixed contact 11 maintain contact with each other.

  When the supply of the current to the coil 63 of the solenoid actuator 30a is stopped after the locking member 67 has rotated to the position shown in FIG. 12, the movable iron core 64 and the movable contact 23 are fixed by the biasing force of the coil spring 95. The movable portion 31 moves in the opening direction (rightward in the X direction in FIG. 1) of opening from the contact 11, that is, toward the first contact position II shown in FIG. Then, as shown in FIG. 13, each locking projection 81 slides along the sixth inclined surface 92a of each holding projection 92 in the A4 direction (inclination direction of the fifth inclined surface 81a or the sixth inclined surface 92a). To do. Since each locking protrusion 81 is not housed in the second guide groove 94, it contacts each step 93c. As a result, each locking projection 81 is held by the sixth inclined surface 92a of each holding projection 92 and each step 92c, and the locking member 67 is held at the position shown in FIG.

  At this time, in the locking member 67, each fifth inclined surface 81a is held at a position closer to the contact direction than the position shown in FIG. Therefore, the movable portion 31 is held at the first contact position II, and as a result, the electromagnetic relay 100 is held in the operating state shown in FIG.

  Further, the contact portions 51 and 52 of the movable contact piece 22 have the holding positions shown in FIG. 10 when the locking member 67 is held by the sixth inclined surface 92a of each holding convex portion 92 and each step portion 92c. Located in V. In the holding position V, the contact portions 51 and 52 are located between the non-holding position IV shown in FIG. 8 and the overshoot position VI shown in FIG.

  That is, the contact portions 51 and 52 of the movable contact piece 22 are not held when the electromagnetic relay 100 changes from the reset state to the operating state (when the movable portion 31 moves from the non-contact position I to the first contact position II). When moving from the position IV to the holding position V, the holding position V is once passed, and after passing through the overshoot position VI which is farther from the non-holding position IV in the contact direction than the holding position V, the holding position V is moved to the holding position V. It is supposed to do.

  On the other hand, in the electromagnetic relay 100 in the operating state shown in FIG. 2, when current is supplied to the coil 63 of the solenoid actuator 30a, the movable portion 31 starts moving from the first contact position II toward the second contact position III. That is, the movable iron core 64 moves in the contact direction and pushes the locking member 67 in the contact direction via the pressing member 66.

  At this time, in the movable iron core 64, as shown in FIG. 14, the locking member 67 moves in the A5 direction (upward in the longitudinal direction of the locking projection 81 in FIG. 14), and the fifth locking portion of each locking projection 81. The movement in the contact direction is continued until the inclined surface 81a reaches the upper end (the upper end in FIG. 14) of the step 92c of each holding projection 92.

  Further, the contact portions 51 and 52 of the movable contact piece 22 move from the holding position V shown in FIG. 10 to the overshoot position VI shown in FIG. 9 as the movable iron core 64 moves.

  When the fifth inclined surface 81a of each locking projection 81 of the locking member 67 moves to the upper end (upper end of FIG. 14) of the step 92c of each holding projection 92, that is, the movable portion 31 moves to the position shown in FIG. 15, the locking member 67 moves in the A6 direction (inclination direction of the seventh inclined surface 92b of the holding convex portion 92) as shown in FIG. 15, and each locking convex portion 81. The locking member 67 rotates until the fifth inclined surface 81a of the above and the seventh inclined surface 92b of each holding convex portion 92 face each other.

  After the locking member 67 rotates to the position shown in FIG. 15, when the supply of the current to the coil 63 of the solenoid actuator 30a is stopped, the biasing force of the coil spring 95 causes the movable iron core 64 to move in the opening direction, that is, The movable portion 31 moves toward the non-contact position I shown in FIG. Then, as shown in FIG. 16, the locking projection 81 slides along the seventh inclined surface 92b of the holding projection 92 and then moves in the A7 direction (downward in the longitudinal direction of the locking projection 81 in FIG. 16). Then, the locking member 67 is housed in the first guide groove 93. As a result, the movable portion 31 is held at the non-contact position I, and as a result, the electromagnetic relay 100 is held in the return state shown in FIG.

  At this time, the contact portions 51 and 52 of the movable contact piece 22 move from the overshoot position VI shown in FIG. 9 to the non-holding position IV shown in FIG. 8 as the locking member 67 moves.

  Thus, in the electromagnetic relay 100, the movable contact 23 contacts the fixed contact 11 while the movable contact 23 contacts the fixed contact 11 at the end of the movable contact piece 22 of the movable contact side terminal 20. It has a rigid separation structure that elastically deforms the contact portions 51 and 52 more than the portion where the movable contact 23 is fixed when the movable portion 31 is moved in the direction.

  That is, the cut portions 41, 42, 43 and the contact portions 51, 52 adjacent to the cut portions 41, 42, 43 are provided at the end of the movable contact piece 22 of the movable contact side terminal 20, and each contact portion is provided. 51, 52 are held in a state where the fixed contact 11 and the movable contact 23 are in contact with the non-holding position IV, which is the position of each contact portion 51, 52 when the fixed contact 11 and the movable contact 23 are separated. It elastically deforms so as to be surely movable between the holding position V, which is the position of each of the contact portions 51 and 52 when it is present, and the overshoot position VI farther from the non-holding position IV than the holding position V. As a result, even when the movable contact piece 22 has high rigidity, the movable portion 31 moves between the first contact position II and the non-contact position I through the second contact position III. be able to. As a result, it is possible to provide the electromagnetic relay 100 including the self-holding solenoid drive unit 30 that can reliably move to the overshoot position.

  Further, the movable contact piece 22 of the movable contact side terminal 20 has at least a first plate member 22a and a second plate member 22b stacked in the contact / separation direction (X direction) of the first plate member 22a, The end portion 26 of the movable contact piece 22 is provided with a low laminated area 26a in which the second plate member 22b is not overlapped in the contact and separation direction of the first plate member 22a, and the contact portions 51, 52 and a rigid separation structure are arranged.

  That is, the movable contact piece 22 is a laminated body in which a plurality of plate members are stacked in the contacting / separating direction, the contact portions 51, 52 are adjacent to the cut portions 41, 42, 43, and the movable portion 31 does not contact. It has a smaller contact / separation direction dimension than the non-contact portion 53. Therefore, as compared with the non-contact portion 53, elastic deformation in the contact / separation direction (X direction) of the movable contact 23 of each contact portion 51, 52 is facilitated, so that the movable portion 31 moves the second contact position III. Through this, it is possible to more reliably move between the first contact position II and the non-contact position I.

  In addition, the notches are provided at intervals in the lateral direction (Z direction) and the first notches 41 extending along the lateral direction (Z direction) of the movable contact piece 22, respectively. The movable contact piece 22 has a second cut portion 42 and a third cut portion 43 which extend along the longitudinal direction (Y direction) and are continuous with the first cut portion 41. This facilitates elastic deformation of the contact portions 51, 52 in the contact / separation direction (X direction) of the movable contact 23, so that the movable portion 31 passes through the second contact position III and the first contact position II. And the non-contact position I can be moved more reliably.

  In addition, the movable portion 31 is capable of reciprocating in the contacting / separating direction (X direction) with the movable iron core 64, and is in contact with the contact portions 51 and 52 of the movable contact piece 22, and the movable iron core 64 and the movable iron core 64. And a connecting member 96 for connecting the movable plate 33. Accordingly, the arrangement of the fixed contact side terminal 10, the movable contact side terminal 20, and the solenoid drive unit 30 can be changed according to the design of the electromagnetic relay 100 and the like.

  Further, the movable plate 33 has a pair of projecting portions 34a, 34b projecting in the contacting / separating direction (X direction) and capable of contacting the contact portions 51, 52 of the movable contact piece 22, and a pair of projecting portions 34a, 34b. The contact parts 51 and 52 of the movable contact piece 22 are connected. Thereby, the movement of the movable iron core 64 can be efficiently transmitted to the movable contact piece 22.

  In addition, in the electromagnetic relay 100 of 1st Embodiment, although the movable contact piece 22 was comprised by the laminated body which laminated | stacked the two plate members in the contact / separation direction, it is not restricted to this. The movable contact piece may be composed of one plate member or may be composed of three or more plate members.

  Further, the movable contact piece 22 is not limited to the rectangular plate shape, and any shape can be adopted according to the design of the electromagnetic relay.

  Further, the notches are not limited to the first to third notches 41, 42, 43, and any number and shape may be used as long as they can form a contact part with which the movable part of the solenoid drive part can contact. The notch can be used.

  That is, the movable contact piece has, at its end, a notch portion extending in a direction intersecting the contact and separation direction, and a contact portion that is adjacent to the notch portion and is in contact with the movable portion of the solenoid drive portion. It suffices that the contact portion is elastically deformed so as to be reliably movable to the non-holding position, the holding position and the overshoot position.

  For example, as shown in FIG. 17, a contact portion 151 is provided at the tip end portion so as to surround the first to third cutout portions 41, 42, 43, and through holes 54a, 54b are provided at both ends in the lateral direction. You may employ | adopt the movable contact piece 122 which has. In this case, as shown in FIG. 18, for example, as shown in FIG. 18, the pair of protrusions 34a and 34b protrudes to the left in the X direction and has a pair of protrusions 134a and 134b that can be fitted into the through holes 54a and 54b. By adopting the plate 133, the movement of the movable iron core 64 can be efficiently transmitted to the movable contact piece 22.

  Further, as shown in FIG. 19, a movable contact piece 222 may be adopted in which only the first cut portion 41 is provided at the tip end portion and the contact portions 251 and 252 adjacent to the first cut portion 41 are provided.

  The rigid separation structure is not limited to the case where it is configured by the first cut portion 41, the second cut portion 42, and the third cut portion 43, and the movable contact 23 is movable in a state where the movable contact 23 is in contact with the fixed contact 11. When the movable part 31 is moved in the direction in which the contact 23 comes into contact with the fixed contact 11 (leftward in the X direction), the contact parts 51 and 52 can be elastically deformed more than the part where the movable contact 23 is fixed. Any structure can be adopted as long as it is possible.

  The solenoid drive unit 30 is not limited to the case where it is configured by the solenoid actuator 30a, the ratchet mechanism unit 30b, the arm unit 32, and the movable plate 33. The solenoid drive part has a movable part capable of reciprocating in the contacting / separating direction and capable of contacting the movable contact piece in the contacting / separating direction. A self-holding solenoid drive unit, which is configured to move between the first contact position and the non-contact position through the second contact position while being brought into contact with or separated from each other by the movable section. Good.

(Second embodiment)
As shown in FIGS. 20 and 21, the electromagnetic relay 200 of the second embodiment of the present invention has a movable contact side terminal 120 in which a terminal portion 121 extends upward from the housing case 2 along the fixed contact side terminal 10. In addition, the movable contact piece 122 and the movable plate 133 shown in FIGS. 17 and 18 are used, which is a difference from the electromagnetic relay 100 of the first embodiment. In the second embodiment, the same parts as those in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted. Differences from the first embodiment will be described.

  In the electromagnetic relay 200 of the second embodiment, as shown in FIG. 20 and FIG. 21, the fixed contact side terminal 10 moves as the terminal portion 121 of the movable contact side terminal 120 moves upward from the housing case 2 (upper side in the Y direction). And a flat plate portion 122b extending upward from the inclined plate portion 121a along the fixed contact side terminal 10. The movable contact piece 122 is fixed to the lower end of the flat plate portion 121b.

  As shown in FIG. 21, in the electromagnetic relay 200 in the operating state, a part of the movable contact piece 122 between the curved portion 25 and the movable contact 23 comes into contact with the terminal portion 121. Thereby, the heat generated when the fixed contact 11 and the movable contact 23 are opened and closed can be conducted to the movable contact side terminal 20 via the movable contact piece 122 to be dissipated.

(Third Embodiment)
As shown in FIG. 22, the electromagnetic relay 300 of the third embodiment of the present invention is a solenoid in which a yoke 65 is provided around the coil 63 and a fixed iron core 164 is provided at the end of the coil 63 on the pressing member 66 side. It differs from the electromagnetic relay 100 of the first embodiment in that the actuator 130a is used. In the third embodiment, the same parts as those in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted. Differences from the first embodiment will be described.

  In the electromagnetic relay 300 of the third embodiment, as shown in FIG. 22, when a current is supplied to the coil 63 of the solenoid actuator 130a, a magnetic field is generated between the movable iron core 64 and the fixed iron core 164, and the movable iron core 64 is fixed. It is sucked toward the iron core 164. When the movable iron core 64 is attracted toward the fixed iron core 164, the gap between the yoke 65 and the circular brim portion 68 is narrowed, a magnetic field is generated between the yoke 65 and the circular brim portion 68, and the circular arc is further generated. The collar portion 68 is sucked toward the yoke 65.

  Here, the relationship between the diameter of the circular collar portion 68 and the magnetic attraction force acting between the yoke 65 and the circular collar portion 68 is shown in FIG. In FIG. 23, when the distance (stroke) between the yoke 65 and the end surface of the movable iron core 64 is 5 mm and the circular collar portion 68 is not provided (φ8 mm), the yoke 65 and the movable iron core 64 are separated from each other. The relative value when the magnetic attraction force to work is set to 1 is shown.

  As shown in FIG. 23, the magnetic force acting between the yoke 65 and the movable iron core 64 is greater when the circular collar portion 68 is provided (φ13 and φ18) than when the circular collar portion 68 is not provided (φ8). It was found that the attractive force becomes larger. It was also found that the larger the diameter of the circular collar portion 68, the greater the magnetic attraction force acting between the yoke 65 and the circular collar portion 68.

  That is, in the electromagnetic relay 300 of the third embodiment, since the force pressing the contact portion 151 of the movable contact piece 122 can be increased, even if the movable contact piece 22 has high rigidity, the movable portion It is possible for 31 to move more reliably between the first contact position II and the non-contact position I through the second contact position III.

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

The electromagnetic relay of the first aspect of the present invention is
A fixed contact side terminal having a fixed contact,
A movable contact arranged so as to face the fixed contact is provided, and the movable contact has a movable contact piece that elastically deforms so as to come into contact with the fixed contact, the movable contact is arranged in parallel with the fixed contact side terminal, and A movable contact side terminal that is electrically independent of the fixed contact side terminal,
A solenoid actuator; and a movable portion capable of reciprocating in the contact / separation direction in which the movable contact comes into contact with and separates from the fixed contact by the solenoid actuator, and is in contact with the movable contact piece in the contact / separation direction. A self-holding solenoid drive unit that has a movable contact with or separates from the fixed contact by reciprocating movement of the movable unit in the contacting and separating direction;
Equipped with
The movable contact piece has, at its end portion, a contact portion with which the movable portion of the solenoid drive portion can contact, and the movable contact with respect to the fixed contact in a state where the movable contact is in contact with the fixed contact. A rigid separation structure that elastically deforms the contact portion more than a portion to which the movable contact is fixed when the movable portion is moved in a contact direction.
In the return state in which the movable portion is held with the movable contact separated from the fixed contact, the movable portion is located at the non-contact position, and the movable contact is held in contact with the fixed contact. In the operating state in which the movable portion is located at the first contact position, a second contact position between the non-contact position and the first contact position is farther from the non-contact position than the first contact position. Is configured to move through
The contact portion is located in the non-holding position in the return state, is located in the holding position in the operating state, and is further from the non-holding position than the holding position when the movable portion is in the second contact position. It is configured to be located at the overshoot position.

  According to the electromagnetic relay of the first aspect, the movable portion is provided at the end of the movable contact piece of the movable contact side terminal in the direction in which the movable contact makes contact with the fixed contact while the movable contact makes contact with the fixed contact. It has a rigid separation structure that elastically deforms the contact portion more than the portion where the movable contact is fixed when moved. As a result, the contact portion has a non-holding position that is the position of the contact portion when the fixed contact and the movable contact are separated, and the position of the contact portion when the fixed contact and the movable contact are held in contact with each other. And the overshoot position farther from the non-holding position than the holding position. Accordingly, even when the movable contact piece has high rigidity, the movable portion can move between the first contact position and the non-contact position through the second contact position. As a result, it is possible to provide an electromagnetic relay including a self-holding solenoid drive unit that can reliably move to the overshoot position.

In the electromagnetic relay of the second aspect of the present invention,
The movable contact piece has at least a first plate member and a second plate member that is overlapped with the first plate member in the contact and separation direction,
A low stacking region where the second plate member is not stacked in the contacting and separating direction of the first plate member is provided at the end portion of the movable contact piece,
The movable contact is fixed to a non-contact portion where the second plate member is superposed in the contact and separation direction of the first plate member and the movable portion does not contact,
The contact portion and the rigid separation structure are arranged in the low stacking region.

  According to the electromagnetic relay of the second aspect, elastic deformation in the contacting / separating direction of the movable contact of each contact portion becomes easier than that of the non-contact portion, so that the movable portion passes through the second contact position and moves to the first contact point. It is possible to move more reliably between the contact position and the non-contact position.

In the electromagnetic relay of the third aspect of the present invention,
The movable contact piece of the movable contact side terminal has a rectangular plate shape,
The notch portion is provided with a first notch portion extending along the lateral direction of the movable contact piece and at a distance in the lateral direction, and along the longitudinal direction of the movable contact piece. A second notch and a third notch that extend continuously and are continuous with the first notch,
The contact portion is located outside the first cut portion, the second cut portion, and the third cut portion of the movable contact piece.

  According to the electromagnetic relay of the third aspect, elastic deformation of the movable contacts of the respective contact portions in the contact / separation direction (X direction) is facilitated, so that the movable portion passes through the second contact position and becomes the first contact position. It is possible to more reliably move to and from the non-contact position.

In the electromagnetic relay of the fourth aspect of the present invention,
The solenoid drive unit has a coil, and a movable iron core provided in the coil and capable of reciprocating in the contacting / separating direction,
A movable plate in which the movable portion is capable of reciprocating in the contact and separation direction with the movable iron core, and is in contact with the contact portion of the movable contact piece; and a connecting member connecting the movable iron core and the movable plate. have.

  According to the electromagnetic relay of the fourth aspect, the arrangement of the fixed contact side terminal, the movable contact side terminal, and the solenoid drive unit can be changed according to the design of the electromagnetic relay and the like.

In the electromagnetic relay of the fifth aspect of the present invention,
The movable plate has a protrusion projecting in the contact and separation direction and capable of contacting the contact portion of the movable contact piece;
The protrusion and the contact portion of the movable contact piece are connected.

  According to the electromagnetic relay of the fifth aspect, the motion of the movable iron core can be efficiently transmitted to the movable contact piece.

  By properly combining the arbitrary embodiments or modifications of the aforementioned various embodiments or modifications, the effects possessed by them can be produced. Further, a combination of the embodiments or a combination of the examples or a combination of the embodiment and the example is possible, and a combination of features in different embodiments or examples is also possible.

  The electromagnetic relay of the present invention is not limited to the electromagnetic relay of the above embodiment, but can be applied to electromagnetic relays of other configurations.

DESCRIPTION OF SYMBOLS 1 Housing 2 Housing case 3 Left side wall 4 Housing recess 10 Fixed contact side terminal 11 Fixed contact 20, 120 Movable contact side terminal 21, 121 Terminal part 121a Inclined plate part 121b Flat plate part 22 Movable contact piece 22a First plate member 22b Second Plate member 23 Movable contact 24 Upper end portion 25 (of terminal portion) Curved portion 26 Upper end portion 26 of movable contact piece 26a Low lamination area 30 Solenoid drive portions 30a, 130a Solenoid actuator 30b Ratchet mechanism portion 31 Movable portion 32 Arm portion 33, 133 movable plates 34a, 34b, 134a, 134b projecting portion 35 through hole 36 rotation support portion 41 first cut portion 42 second cut portion 43 third cut portion 51, 52, 151, 251, 252 contact portion 53 Non-contact parts 54a, 54b Through hole 61 Housing 62a (of solenoid actuator) Through hole 62 63 coil 64 movable iron core 164 fixed iron core 65 yoke 66 pressing member 67 locking member 68 circular flange 81 locking protrusion 81a fifth inclined surface 82 first inclined surface 83 second inclined surface 84 third inclined surface 85 4 inclined surface 86 guide convex portion 91 (of ratchet mechanism portion) housing 91a through hole 92 holding convex portion 92a sixth inclined surface 92b seventh inclined surface 93 first guide groove 94 second guide groove 95 coil spring 96 connecting member 100, 200, 300 Electromagnetic relay I Non-contact position
II First contact position
III Second contact position
IV Non-holding position V Holding position
VI Overshoot position

Claims (4)

A fixed contact side terminal having a fixed contact,
A movable contact arranged so as to face the fixed contact is provided, and the movable contact has a movable contact piece that elastically deforms so as to come into contact with the fixed contact, the movable contact is arranged in parallel with the fixed contact side terminal, and A movable contact side terminal that is electrically independent of the fixed contact side terminal,
A solenoid actuator; and a movable portion capable of reciprocating in the contact / separation direction in which the movable contact comes into contact with and separates from the fixed contact by the solenoid actuator, and is in contact with the movable contact piece in the contact / separation direction. A self-holding solenoid drive unit that has a movable contact with or separates from the fixed contact by reciprocating movement of the movable unit in the contacting and separating direction;
Equipped with
The movable contact piece has, at its end portion, a contact portion with which the movable portion of the solenoid drive portion can contact, and the movable contact with respect to the fixed contact in a state where the movable contact is in contact with the fixed contact. A rigid separation structure that elastically deforms the contact portion more than a portion to which the movable contact is fixed when the movable portion is moved in a contact direction.
In the return state in which the movable portion is held with the movable contact separated from the fixed contact, the movable portion is located at the non-contact position, and the movable contact is held in contact with the fixed contact. In the operating state in which the movable portion is located at the first contact position, a second contact position between the non-contact position and the first contact position is farther from the non-contact position than the first contact position. Is configured to move through
The contact portion is located in the non-holding position in the return state, is located in the holding position in the operating state, and is further from the non-holding position than the holding position when the movable portion is in the second contact position. It is configured to be located at the overshoot position ,
The movable contact piece has at least a first plate member and a second plate member that is overlapped with the first plate member in the contact and separation direction,
A low stacking region where the second plate member is not stacked in the contacting and separating direction of the first plate member is provided at the end portion of the movable contact piece,
The movable contact is fixed to a non-contact portion where the second plate member is superposed in the contact and separation direction of the first plate member and the movable portion does not contact,
An electromagnetic relay in which the contact portion and the rigid separation structure are arranged in the low stacking region . The movable contact piece of the movable contact side terminal has a rectangular plate shape,
The notch portion is provided with a first notch portion extending along the lateral direction of the movable contact piece and at a distance in the lateral direction, and along the longitudinal direction of the movable contact piece. A second notch and a third notch that extend continuously and are continuous with the first notch,
The electromagnetic relay according to claim 1, wherein the contact portion is located outside the first cut portion, the second cut portion, and the third cut portion of the movable contact piece. The solenoid drive unit has a coil, and a movable iron core provided in the coil and capable of reciprocating in the contacting / separating direction,
A movable plate in which the movable portion is capable of reciprocating in the contact and separation direction with the movable iron core, and is in contact with the contact portion of the movable contact piece; and a connecting member connecting the movable iron core and the movable plate. The electromagnetic relay according to claim 1 or 2 , further comprising: The movable plate has a protrusion projecting in the contact and separation direction and capable of contacting the contact portion of the movable contact piece;
The electromagnetic relay according to claim 3 , wherein the protruding portion and the contact portion of the movable contact piece are connected to each other.

Images