JP2014154496A - Electromagnetic relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a configuration with excellent performance characteristic and impact resistance without degrading insulation performance between contactors.SOLUTION: The electromagnetic relay includes: a stationary contactor 38 with a stationary contact 45; an elastically deformable movable contactor 39 with a movable contact 51 facing the stationary contact 45 to be separable therefrom; an electromagnet 18; an intermediate member 19 that is driven by energizing the electromagnet 18 and elastically deforms the movable contactor 39; and an abutment section 11 that abuts against a part of the movable contactor 39 before the movable contactor 39 elastically deforms and makes the movable contact 51 close to the stationary contact 45.

Description

  The present invention relates to an electromagnetic relay.

  Patent Document 1 discloses an electromagnetic relay including a backup spring that abuts on a movable contact spring when the movable contact spring is driven through an armature by exciting an electromagnet and the movable contact is closed to a fixed contact.

  However, in the electromagnetic relay described in the said patent document 1, it is necessary to arrange | position a backup spring separately between contact springs. In addition, this backup spring cannot ensure a sufficient insulation distance between the contact springs. In particular, it is difficult to ensure insulation performance in an environment where a high voltage is applied or a high current is applied.

JP-A-3-269927

  The subject of this invention is making it the structure excellent in the operating characteristic and impact resistance, without reducing the insulation performance between contact pieces.

As a means for solving the above problems, the present invention provides:
Electromagnetic relay
A stationary contact piece having a stationary contact;
An elastically deformable movable contact piece having a movable contact facing the fixed contact so as to be able to contact and separate;
An electromagnet,
An intermediate member that is driven by excitation of the electromagnet and elastically deforms the movable contact piece;
Before the movable contact piece elastically deforms and closes the movable contact to the fixed contact, a contact portion that contacts a part of the movable contact piece;
It is set as the structure provided.
Here, the intermediate member refers to a member that plays a role of transmitting a driving force accompanying excitation / demagnetization of the electromagnet to the movable contact piece, and includes, for example, a movable iron piece and a card member.

  The contact position of the contact portion with the movable contact piece may be in any range from the fixed portion of the movable contact piece to the movable contact provided on the tip side.

  Further, the pressing position of the intermediate member with respect to the movable contact piece may be on the tip side of the movable contact piece with respect to the contact position of the contact portion.

With the above configuration, when the movable contact piece is elastically deformed, the contact portion comes into contact with the movable contact piece before the contact is closed. For this reason, after the movable contact piece comes into contact with the contact portion, only the portion on the tip side of the contact portion is elastically deformed. Therefore, the spring constant of the movable contact piece can be changed between the initial stage of driving and after the abutting part abuts, and the driving force required for elastic deformation is different.
That is, if the attractive force is not so great by the electromagnet at the initial stage of driving, the movable contact piece has a wide deformation range and is easily elastically deformed. On the other hand, if the movable contact piece comes into contact with the contact portion and a large attractive force can be applied to the intermediate member by the electromagnet, there is no problem even if the movable contact piece is hardly elastically deformed. When the electromagnet is demagnetized, the contact can be easily opened by the movable contact piece whose elastic force is increased by the change in the contact position of the contact portion.
Moreover, since it is the structure which provided only the contact part, movable contact piece itself can be comprised with an elastic deformation | transformation easily, for example with a thin plate.
Furthermore, even if the impact force acts and the movable contact piece is elastically deformed to close the contact, the spring constant changes at the time of contact with the contact portion, and it becomes difficult to deform. That is, it has excellent impact resistance.

The movable contact piece is formed with a bent portion that is bent in a direction away from the contact portion in a range from a fixed portion of the movable contact piece to the movable contact.
It is preferable that the contact portion protrudes in a direction opposite to the fixed portion from a position where the bent portion of the movable contact piece contacts.

  With this configuration, the distance between the contacts can be made sufficiently large in the initial stage before the movable contact piece is elastically deformed. That is, the insulation performance between the contacts can be enhanced with a simple configuration in which the bent portion is formed. In addition, the movable contact piece is initially elastically deformed with the bent portion as a starting point, and after contacting the contact portion, the start point can be moved to the contact position to change the spring constant.

  The contact portion preferably includes a contact position displacement portion that sequentially changes the contact position toward the distal end side with respect to the elastically deformable movable contact piece.

  With the above configuration, the force required when elastically deforming the movable contact piece can be increased stepwise, and a driving force with less waste suitable for changes in the attractive force curve of the electromagnet can be obtained. It becomes possible.

  The abutting position displacement part can be configured by a step part.

  It is preferable that the fixed contact piece and the movable contact piece include a plurality of pairs of contact pairs that are closed with a time lag.

  With the above configuration, the contact is closed with a time difference, so that contact welding hardly occurs.

  According to the present invention, the movable contact piece is provided with the abutting portion that abuts before the contact is closed due to elastic deformation, so that the driving force required for the elastic deformation of the movable contact piece is stepwise. Can be changed. For this reason, it can be set as the structure excellent in the operating characteristic and impact resistance, and it becomes possible to improve the insulation between contacts.

It is a perspective view of the electromagnetic relay which concerns on this embodiment. FIG. 2 is an exploded perspective view of FIG. 1. It is a perspective view of the base of FIG. FIG. 3 is an exploded perspective view of the electromagnet of FIG. 2. (A) is an expanded perspective view of the movable iron piece and card member of FIG. 2, (b) is a perspective view which shows the state which looked at (a) from a different angle. It is an expansion perspective view of the fixed contact piece of FIG. It is an expansion perspective view of the movable contact piece and auxiliary member of FIG. It is a partially broken perspective view of the case shown in FIG. It is a graph which shows the relationship between a suction force curve and the force (driving force) which acts on a movable contact piece. It is the front view which removed the guide part of the base except the case in which the electromagnet of the electromagnetic relay shown in FIG. 1 is a non-excited state. It is a front view which shows the state before exciting an electromagnet from FIG. 10 and closing a contact. It is a front view in the state immediately after contact closing which the movable contact piece driven from FIG. It is a fragmentary perspective view of the base concerning other embodiments.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. In the following description, terms indicating specific directions and positions (for example, terms including “up”, “down”, “side”, “end”) are used as necessary. Is for facilitating understanding of the invention with reference to the drawings, and the technical scope of the present invention is not limited by the meaning of these terms. Further, the following description is merely illustrative in nature and is not intended to limit the present invention, its application, or its use.

  FIG. 1 is a perspective view showing an external appearance of an electromagnetic relay according to the present embodiment, and FIG. 2 is an exploded perspective view thereof. The electromagnetic relay generally includes a base 1, an electromagnet unit 2, a contact opening / closing unit 3, and a case 4.

  As shown in FIG. 2 and specifically FIG. 3, the base 1 is formed into a plate shape by molding a synthetic resin material. A partition wall 5 is formed at the center of the upper surface of the base 1 and is divided into a first mounting portion 6 where the electromagnet portion 2 is disposed and a second mounting portion 7 where the contact opening / closing portion 3 is disposed.

  A grid-like rib 8 is formed at a central portion of the upper surface of the first mounting portion 6 by a plurality of concave portions having a rectangular shape in plan view. In addition, on both sides of the first mounting portion 6, coil terminal holes 9 having a rectangular shape in plan view penetrating the upper and lower surfaces are formed.

  The second mounting portion 7 is formed with fixed terminal holes 10 penetrating the upper and lower surfaces at two locations in the width direction along the one end surface. The fixed terminal hole 10 is partitioned by a central auxiliary wall 12. A mounting recess 13 extending in the width direction is formed along the fixed terminal hole 10. The mounting recess 13 has an escape recess 14 that extends to the other end side at the center. A positioning hole 15 penetrating the lower surface is formed at the center of the bottom surface of the escape recess 14. Further, a contact piece 11 projects between each fixed terminal hole 10 and the mounting recess 13. One side of each contact piece 11 is configured by a flat surface 11 a that is flush with the inner side surface of the mounting recess 13. The opposite side of each contact piece 11 is reinforced by ribs 11b extending in the vertical direction in two rows. Further, an arc surface 11c is formed on the upper end portion of each contact piece 11 from the flat surface 11a side. As will be described later, a movable contact piece 39 is disposed along the flat surface 11a.

  On both sides of the partition wall 5, guide portions 16 that protrude from the partition wall 5 are formed. Each guide portion 16 is formed with a guide groove 17 extending in the vertical direction on the opposing surface.

  The electromagnet unit 2 includes an electromagnet 18 and a movable iron piece 19 driven by the electromagnet 18.

  As shown in FIG. 4, the electromagnet 18 is obtained by winding a coil 22 around an iron core 20 via a spool 21.

  The iron core 20 is made of a magnetic material in a columnar shape, and a flange portion 20a is formed at a lower end portion thereof, and a lower surface thereof serves as a suction surface 20b. A yoke 23 is caulked and fixed to the upper end portion of the iron core 20.

  The spool 21 is formed by molding a synthetic resin material into a substantially cylindrical shape. A coil 22 is wound around a body portion (not shown) of the spool 21. At both ends of the spool 21, flanges are formed. On the upper surface of the upper end side flange portion 25, a groove portion in which the horizontal portion of the yoke 23 is disposed is formed. Coil press-fitting holes 28 into which the coil terminals 27 are press-fitted are formed on both sides of the lower flange portion 26, respectively.

  The coil terminal 27 is made of a conductive metal plate, and a wide portion 29 is formed at the upper end portion. A part of the wide portion 29 is cut and raised to form a winding portion 30 around which the lead wire of the coil 22 is wound. A protrusion 29 a is formed at the center of one side of the wide portion 29. Further, on both side portions of the coil terminal 27, projections 29 b projecting laterally are formed in the vicinity of the wide portion 29. These protrusions 29 a and 29 b are in a press-fitted state when the coil terminal 27 is inserted into the coil press-fit hole 28 formed in the lower flange portion 26 of the spool 21, and position the coil terminal 27 with respect to the spool 21.

  The yoke 23 is obtained by bending a plate material made of a magnetic material into a substantially L shape. A through hole 23a is formed in the central portion of the horizontal portion. The upper end portion of the iron core 20 is inserted into the through hole 23a and crimped. In this crimped state, the horizontal portion of the yoke 23 extends to the lower end side along the coil 22 wound around the spool 21. Both sides of the lower end of the vertical portion are press-fit portions 31 that protrude sideward and downward. The press-fit portion 31 is press-fitted into the guide groove 17 formed in the guide portion 16 of the base 1 and positions the yoke 23, that is, the electromagnet 18 with respect to the base 1. Further, caulking projections 23b are formed at two locations on the outer surface of the vertical portion. A hinge spring 32 is caulked and fixed to the yoke 23 using these protrusions 23b.

  The hinge spring 32 is formed with a substantially C-shaped bent portion 33 on the lower end side. The bent portion 33 elastically supports the movable iron piece 19 between the lower end portion of the yoke 23. Thereby, the movable iron piece 19 can be rotated around the lower end portion of the yoke 23 (specifically, the lower end edge A on the left side in FIG. 10).

  As shown in FIG. 5, the movable iron piece 19 is made of a magnetic material plate, bent at an intermediate portion, and has a substantially L shape. The horizontal portion 19 a obtained by bending is sucked by the suction surface 20 b of the iron core 20. A rectangular hole 19c through which the bent portion 33 of the hinge spring 32 is inserted is formed in the vertical portion 19b. Further, in the vertical portion 19b, two through holes (not shown) are formed in the upper portion of the rectangular hole 19c so as to be integrated with the card member 34.

  The card member 34 is integrated with the movable iron piece 19 by insert molding (instead of insert molding, it may be integrated by heat caulking or the like). The card member 34 is a plate made of a synthetic resin material. The vertical portion 19b of the movable iron piece 19 abuts on the back surface, and protrusions 34a are formed on the three peripheral sides so as to surround the vertical portion 19b. Yes. Further, a protruding portion 35 is formed on the back surface of the card member 34 so as to protrude to the back surface side through a notch formed in the upper portion of the vertical portion of the movable iron piece 19. The projecting portion 35 abuts on the hinge spring 32 that is caulked and fixed to the yoke 23, and limits the range of rotation in this direction. On the other hand, on the front surface of the card member 34, protrusions 34a that extend vertically in two rows in the width direction are formed, and on each upper end portion of each protrusion 34a, a pressing portion 36 that protrudes toward the front surface side is formed. . A guide piece portion 37 that protrudes forward and then bends downward is formed at the lower end of the card member 34. The guide piece portion 37 is disposed beyond the partition wall 5 of the base 1 toward the second mounting portion 7 side.

  The contact opening / closing part 3 includes a fixed contact piece 38 and a movable contact piece 39.

  As shown in FIG. 6, the fixed contact piece 38 is formed by forming a conductive metal material into a plate shape. The fixed contact piece 38 includes a press-fit portion 41 that is press-fitted into the fixed terminal hole 10 formed in the base 1, a contact piece portion 42 that extends upward from the press-fit portion 41, and a terminal portion 43 that extends downward from the press-fit portion 41. It is configured. The press-fit portion 41 is formed with a protrusion 41a extending in the width direction on one side. The contact piece 42 is formed with a slit 44 extending vertically in the center position. A fixed contact 45 is crimped and fixed to the upper end of the contact piece 42. Further, the terminal portion 43 is folded in half from both sides.

  As shown in FIG. 7, the movable contact piece 39 is formed by forming a metal material having conductivity and elasticity into a plate shape. The movable contact piece 39 includes a press-fit portion 46 and a pair of main body portions 47 that extend from both sides of the press-fit portion 46 upward.

  The press-fit portion 46 is formed with a pair of projections 48 bulging in the thickness direction at a predetermined interval in the width direction (in FIG. 7, only the concave portion side for forming the projection 48 is shown. ). Both end portions of the press-fit portion 46 extend further to the side, and locking claws 49 protrude from the side edges. Further, a press-fit piece 50 that extends further downward is formed at the center of the lower edge of the press-fit portion 46.

  The main body portion 47 includes a first main body portion 47a that extends in the same plane from both sides of the upper edge portion of the press-fit portion 46, and a second main body portion 47b that is bent thereafter and extends obliquely upward. A through hole is formed on the upper end side of the main body 47, and the movable contacts 51 are respectively fixed by crimping. In addition, an extending portion 52 that is bent obliquely upward toward the fixed contact piece 38 side is formed at the upper end portion of the main body portion 47.

  As shown in FIG. 8, the case 4 is formed in a box shape with a bottom surface opened by molding a synthetic resin material. By fitting the lower end opening of the case 4 to the outer surface of the base 1, the case 4 is fixed to the base 1 and covers each component mounted on the base 1. Reference numeral 59 denotes a separation wall that separates the pair of contact opening / closing portions. Reference numeral 60 denotes a protrusion that is removed after completion of the electromagnetic relay to form a vent hole that communicates inside and outside. However, the protrusion 60 may be used as it is without being removed.

  Then, the assembly method of the electromagnetic relay which consists of the said structure is demonstrated.

  The coil 22 is wound around the body portion 24 of the spool 21, the iron core 20 is inserted into the center hole from below, and the coil terminal 27 is press-fitted into the press-fitting hole. In this state, the suction surface 20 b of the iron core 20 is exposed on the lower surface of the lower flange portion of the spool 21. Further, the upper end portion of the iron core 20 protruding from the upper end side flange portion 25 of the spool 21 is inserted into the through hole of the yoke 23 and fixed by caulking. A hinge spring 32 is caulked and fixed to the yoke 23 in advance. Here, after the lead wire of the coil 22 is wound around the winding portion 30 of the coil terminal 27 and soldered, the winding portion 30 is bent along the wound coil 22. Thereby, the electromagnet 18 is completed. The completed electromagnet 18 elastically supports the movable iron piece 19 between the bent portion 33 of the hinge spring 32 and the lower end portion of the yoke 23. A card member 34 is integrated with the movable iron piece 19 in advance.

  Thus, the electromagnet 18 assembled with the movable iron piece 19 is mounted on the first mounting portion 6 of the base 1. That is, the coil terminal 27 is press-fitted into the coil terminal hole 9 of the base 1, and the press-fitting part 31 of the yoke 23 is press-fitted into the guide groove 17 formed in the guide part 16.

  The contact opening / closing part 3 is attached to the second attachment part 7 of the base 1. That is, the terminal portion 43 of the fixed contact piece 38 is press-fitted into the fixed terminal hole 10 from the upper surface side of the base 1, and the terminal portion 43 is protruded from the lower surface of the base 1.

  Further, the movable contact piece 39 is press-fitted into the mounting recess 13. The movable contact piece 39 has a main body portion 47 extending along the press-fit portion 46 and then bent. Therefore, if the upper end side of the main body portion 47 is gripped, the press-fit portion 46 side can be easily along the flat surface 11a of the abutting piece 11 protruding from the base 1 (regardless of whether or not automatic assembly is performed), and can be attached smoothly. It becomes possible to guide to the concave portion 13 side. That is, the flat surface 11 a serves as a guide when the movable contact piece 39 is attached to the base 1.

  In the contact opening / closing part 3 attached to the base 1 in this way, the movable contact piece 39 is in a state where a part of the press-fit part 46 and the first main body part 47a are in surface contact with the flat surface 11a of the contact piece 11. . The second main body 47b extends away from the flat surface 11a and presses the pressing portion 36 of the card member 34 on the upper end side. Then, the movable iron piece 19 is rotated about the fulcrum in the clockwise direction in the drawing via the card member 34. Thereby, the movable contact 51 is opposed at a position away from the fixed contact.

  Finally, the case 1 is covered with the base 1 to complete the electromagnetic relay.

  Next, the operation of the electromagnetic relay having the above configuration will be described.

  In the demagnetized state of the electromagnet 18 to which no voltage is applied to the coil 22, the movable contact piece 39 is positioned at a position where the movable contact 51 is separated from the fixed contact 45 by its own elastic force, as shown in FIG. To do. Further, the movable iron piece 19 is rotated via the pressing portion 36 of the card member 34. That is, the movable iron piece 19 is rotated clockwise around the lower end edge A of the yoke 23, and the horizontal portion 19 a is kept away from the attraction surface 20 b of the iron core 20 of the electromagnet 18.

  When a voltage is applied to the coil 22 to excite the electromagnet 18, a magnetic force acts on the horizontal portion 19 a of the movable iron piece 19 from the attraction surface 20 b of the iron core 20. Thereby, the movable iron piece 19 presses the tip side from the contact position of the contact piece 11 of the movable contact piece 39 via the pressing portion 36 of the card member 34, and resists the urging force of the movable contact piece 39. It rotates counterclockwise in FIG. 10 around the fulcrum.

  Specifically, as shown in the graph of FIG. 9, the force (driving force) required to drive the movable contact piece 39 with respect to the attractive force curve that can be applied to the movable iron piece 19 by the electromagnet 18 is shown. By changing the contact position of the movable contact piece 39 to the contact piece 11, it can be changed in two steps.

  First, at the initial rotation of the movable iron piece 19 (see FIG. 10), the movable contact piece 39 has a boundary position 47c between the first main body portion 47a and the second main body portion 47b as shown by a solid line (a) in FIG. Elastically deforms as a starting point. For this reason, the elastic force which acts on the movable iron piece 19 from the movable contact piece 39 becomes small by the spring constant of the 2nd main-body part 47b whole. Accordingly, even when the distance from the suction surface 20b of the iron core 20 to the horizontal portion 19a of the movable iron piece 19 is long and the suction force cannot be sufficiently exerted, the movable contact piece 39 can be elastically deformed.

  Subsequently, the movable iron piece 19 rotates so that the lower side of the second main body 47b of the movable contact piece 39 is in surface contact with the contact piece 11 (that is, between the mounting recess 13 of the movable contact piece 39 and the movable contact 51). If the contact piece 11 abuts), the movable contact piece 39 is elastically deformed around the upper end portion (strictly speaking, the boundary position 11d between the flat surface 11a and the arc surface 11c) (see FIG. 11). ). That is, the starting point at the time of elastic deformation moves, the range in which elastic deformation is possible is shortened, and the spring constant changes. For this reason, as shown by a solid line (b) in FIG. 9, the force required to elastically deform the movable contact piece 39 increases. However, at this time, the horizontal portion 19a of the movable iron piece 19 is close to the suction surface 20b of the iron core 20, and a sufficiently large suction force can be applied. Therefore, even if the spring constant of the movable contact piece 39 changes and the force required for elastic deformation increases, the movable iron piece 19 can be smoothly rotated.

  Further, the movable iron piece 19 rotates, and the portion of the movable contact piece 39 protruding from the contact piece 11 is elastically deformed, and the contact is closed with a predetermined contact pressure (see FIG. 12). At this time, the horizontal portion 19a of the movable iron piece 19 further approaches the suction surface 20b of the iron core 20, and finally comes into contact to obtain a strong suction state.

  Thereafter, if the electromagnet 18 is demagnetized, as described above, the spring constant of the movable contact piece 39 is changed and the elastic force is increased. Therefore, the contact can be smoothly opened using this elastic force.

  In the electromagnetic relay, even if an impact force is applied by accidentally dropping it or the like, the contact piece 11 is provided along the movable contact piece 39, so that it is not easily deformed. In addition, when it is deformed to the fixed contact piece 38 side, the starting point at the time of elastic deformation by the contact piece 11 is moved and the spring constant is changed to make it difficult to deform, so that the movable contact 51 becomes the fixed contact 45. It won't be damaged by collision. That is, it has excellent impact resistance.

  In addition, this invention is not limited to the structure described in the said embodiment, A various change is possible.

  For example, in the above-described embodiment, the case where two sets of contact pairs are opened and closed has been described. However, even if the configuration is such that one set of contact pairs or three or more contact pairs is opened and closed, A configuration using the contact piece 11 can be employed.

  Moreover, in the said embodiment, with respect to the flat surface 11a of the contact piece 11, a starting point is changed with the movable contact piece 39 which has the main-body part 47 which consists of the 1st main-body part 47a and the 2nd main-body part 47b bent in the middle. Although it was made to make it, it can also be set as the following structures. That is, the movable contact piece 39 may be configured to have a protrusion or the like that can come into contact with the contact piece 11. Moreover, it is good also as a structure which inclines the flat surface 11a side of the contact piece 11, forms a step part, forms a protrusion, etc. Moreover, it is also possible to combine each structure of these contact piece 11 and the movable contact piece 39 suitably.

  Moreover, in the said embodiment, although the position of the starting point which the movable contact piece 39 elastically deforms was made into 2 places, it is also possible to make it into 3 or more places. For example, as shown in FIG. 13, a stepped portion 61 may be formed on the flat surface 11a of the contact piece. According to this, at first, the second main body portion 47b is elastically deformed starting from the boundary position 47c with the first main body portion 47a, and then elastically starting from the corner portion 62 of the stepped portion 61 in contact with the second main portion 47b. The upper end portion (strictly speaking, the boundary position 11d between the flat surface 11a and the circular arc surface 11c) of the contact piece 11 that is deformed and subsequently contacted can be elastically deformed starting from the starting point. With this configuration, a change in force necessary for elastic deformation of the movable contact piece 39 can be made to follow the attractive force curve of the electromagnet 18. Therefore, it is possible to make the movable contact piece 39 easy to operate and to have a configuration suitable for appropriately opening the contact.

  In the above-described embodiment, the two main body portions 47 of the movable contact piece 39 are elastically deformed and simultaneously contact the upper end of the contact piece 11 to move the start point. It is also possible to configure as described above. For example, a stepped portion may be formed on one flat surface 11 a of the contact piece 11. According to this, the other contact can be closed with a time difference after the one contact is closed. As a result, since the contact that receives the closing current can be specified, it is possible to prevent melting and the like by using a contact material having excellent welding resistance for the contact.

DESCRIPTION OF SYMBOLS 1 ... Base 2 ... Electromagnet part 3 ... Contact opening / closing part 4 ... Case 5 ... Partition wall 6 ... 1st attachment part 7 ... 2nd attachment part 8 ... Rib 9 ... Coil terminal hole 10 ... Fixed terminal hole 11 ... Contact piece ( Contact part)
11a ... Flat surface 11b ... Rib 11c ... Arc surface 12 ... Auxiliary wall 13 ... Mounting recess (fixed part)
DESCRIPTION OF SYMBOLS 14 ... Escape recessed part 15 ... Positioning hole 16 ... Guide part 17 ... Guide groove 18 ... Electromagnet 19 ... Movable iron piece (intermediate member)
DESCRIPTION OF SYMBOLS 20 ... Iron core 21 ... Spool 22 ... Coil 23 ... Yoke 24 ... Body part 25 ... Upper end side collar part 26 ... Lower side collar part 27 ... Coil terminal 28 ... Coil press-fit hole 29 ... Wide part 30 ... Winding part 31 ... Press-fit part 32 ... Hinge spring 33 ... Bent part 34 ... Card member (intermediate member)
35 ... Projection part 36 ... Pressing part 37 ... Guide piece part 38 ... Fixed contact piece 39 ... Movable contact piece 40 ... Auxiliary member 41 ... Press-fit part 42 ... Contact piece part 43 ... Terminal part 44 ... Slit 45 ... Fixed contact 46 ... Press-fit Portion 47 ... Body portion 48 ... Projection 49 ... Locking claw 50 ... Press-fitting piece 51 ... Movable contact 52 ... Extension portion 53 ... Press-fitting portion 54 ... Energizing portion 55 ... Recess 56 ... First cutout portion 57 ... Second cutout portion
58 ... Pressing projection 59 ... Separation wall 60 ... Protrusion

Claims (7)

A stationary contact piece having a stationary contact;
An elastically deformable movable contact piece having a movable contact facing the fixed contact so as to be able to contact and separate;
An electromagnet,
An intermediate member that is driven by excitation of the electromagnet and elastically deforms the movable contact piece;
Before the movable contact piece elastically deforms and closes the movable contact to the fixed contact, a contact portion that contacts a part of the movable contact piece;
An electromagnetic relay characterized by comprising:   2. The electromagnetic wave according to claim 1, wherein the contact position of the contact portion with the movable contact piece is in any range from a fixed portion of the movable contact piece to a movable contact provided on a distal end side. relay.   The electromagnetic relay according to claim 1 or 2, wherein a pressing position of the intermediate member with respect to the movable contact piece is closer to a distal end side of the movable contact piece than a contact position of the contact portion. The movable contact piece is formed with a bent portion that is bent in a direction away from the contact portion in a range from a fixed portion of the movable contact piece to the movable contact.
4. The electromagnetic relay according to claim 1, wherein the contact portion protrudes in a direction opposite to the fixed portion from a position where the bent portion of the movable contact piece contacts. 5. .   5. The contact part according to claim 1, wherein the contact part includes a contact position displacement part that sequentially changes the contact position toward the tip side with respect to the movable contact piece that is elastically deformed. 6. The electromagnetic relay described in 1.   The electromagnetic relay according to claim 5, wherein the contact position displacement portion is formed of a stepped portion.   The electromagnetic relay according to any one of claims 1 to 6, wherein the fixed contact piece and the movable contact piece include a plurality of contact pairs that are closed with a time lag.

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