JP2012256451A - Electromagnetic relay and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic relay with high reliability and safety.SOLUTION: An electromagnetic relay has: a stationary contact provided on a stationary contact spring; a movable contact provided on a movable contact spring; an electromagnet for applying force to the movable spring via an armature and bringing the movable contact into contact with the stationary contact; a magnet for generating a magnetic field between the stationary contact and the movable contact; a stationary side arc runner connected to the stationary spring and provided at a position spaced apart from the stationary spring from a connection portion to the stationary spring as a starting point; a movable side arc runner connected to the movable spring and provided at a position spaced apart from the movable spring from a connection portion to the movable spring as a starting point; a stationary side projection part that projects toward a stationary contact side than a side on which the stationary side arc runner is provided; and a movable side projection part that projects toward a movable contact side than a side on which the movable side arc runner is provided.

Description

  The present invention relates to an electromagnetic relay and a method for manufacturing the electromagnetic relay.

  There is an electromagnetic relay such as a relay as an electronic component for controlling on / off of electric power using an electromagnet. When such an electromagnetic relay such as a relay is used for electric power such as a high voltage or a direct current, an arc is generated between the contacts, and this arc may reduce the life of the relay.

  For this reason, a method is disclosed in which a permanent magnet is provided in the vicinity of the contact, and the arc is generated by applying a force generated by the magnetic field of the permanent magnet to the arc generated when the contacts are separated from each other, and the arc is interrupted in a short time. .

  Moreover, the switch which can suppress the damage by the arc in a contact by providing an arc runner in the vicinity of a contact is disclosed.

JP 2001-176370 A JP 2009-87918 A Japanese Patent No. 2658170

  By the way, even if the arc can be interrupted quickly by the methods shown in Patent Documents 1 to 3, it is not possible to prevent the arc from being generated between the contacts, and the arc is generated even in a short time. For this reason, the contact and the vicinity of the contact are damaged by the arc, the life of the electromagnetic relay is shortened, and the safety and reliability of the electromagnetic relay may be lowered.

  The present invention has been made in view of the above, and it is possible to quickly remove an arc from a contact point, or even if an arc is generated, reliability that does not affect the life of an electromagnetic relay, etc. Alternatively, it is an object to provide a highly safe electromagnetic relay and a method for manufacturing the electromagnetic relay, in particular, a voltage higher than the voltage of the current commercial power supply, or an electromagnetic relay corresponding to a DC power supply, etc. It is an object of the present invention to provide a highly reliable or safe electromagnetic relay and a method for manufacturing the electromagnetic relay.

  The present invention provides a fixed contact provided on a fixed contact spring, a movable contact provided on a movable contact spring, and a force applied to the movable spring via an armature to bring the movable contact into contact with the fixed contact. An electromagnet, a magnet that generates a magnetic field between the fixed contact and the movable contact, and a fixed side that is connected to the fixed spring and is located at a position farther than the fixed spring from a connection portion with the fixed spring An arc runner, a movable arc runner connected to the movable spring, and provided at a position away from the movable spring from a connection portion with the movable spring, and the fixed contact from the side on which the fixed arc runner is provided A fixed-side protrusion that protrudes toward the movable contact, and a movable-side protrusion that protrudes toward the movable contact from the side where the movable arc runner is provided. That.

  Further, according to the present invention, one or more portions selected from the connection portion between the fixed contact and the fixed spring, the connection portion between the movable contact and the movable spring, the fixed side protrusion, and the movable side protrusion are formed thick. It is characterized by being.

  The present invention also provides a fixed contact provided on the fixed contact spring, a movable contact provided on the movable contact spring, and a force applied to the movable spring via an armature to bring the movable contact into contact with the fixed contact. And a magnet that generates a magnetic field between the fixed contact and the movable contact, and is connected to the fixed spring, and is provided at a position farther than the fixed spring from a connection portion with the fixed spring. A fixed-side arc runner, and a movable-side arc runner connected to the movable spring and provided at a position away from the movable spring from a connection portion with the movable spring, the fixed contact spring and the fixed-side arc runner Is formed by processing the same metal plate, and the movable contact spring and the movable side arc runner are formed by processing the other same metal plate. And wherein the Rukoto.

  Further, according to the present invention, a frame portion provided around the fixed contact spring is provided between the connection portion with the fixed spring and the fixed-side arc runner, and the connection portion with the movable spring; The movable side arc runner is connected via a frame provided around the movable contact spring, and the fixed side arc runner and the movable side arc runner are fixed at predetermined positions. It is characterized by being.

  In addition, the present invention provides an electromagnet portion in a base, and a fixed contact portion having a fixed contact, a fixed contact spring and a fixed-side arc runner, a movable contact, a movable contact spring, and a movable side in a region where the electromagnet portion is not installed A step of installing a movable contact portion having an arc runner, a step of installing a yoke so as to sandwich the fixed contact and the movable contact, and a gap between the end of the fixed side arc runner and the end of the movable side arc runner. A step of installing an arc grid; and a step of installing a magnet for generating a magnetic flux between the fixed contact and the movable contact via the yoke, the fixed contact portion, the movable contact portion The yoke, the arc-extinguishing grid, and the magnet are installed in the same direction.

  In the present invention, the direction in which the fixed contact spring extends is substantially the same as the same direction, and the direction in which the movable contact spring extends is substantially the same as the same direction.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of an electromagnetic relay and electromagnetic relay with high reliability or safety | security can be provided. In particular, it is possible to provide an electromagnetic relay corresponding to a voltage higher than the voltage of the current commercial power supply or a DC power supply, and a highly reliable or safe method of manufacturing the electromagnetic relay and the electromagnetic relay.

Structure diagram of electromagnetic relay in this embodiment The perspective view of the electromagnetic relay in this Embodiment Explanatory drawing (1) of the electromagnetic relay in this Embodiment Explanatory drawing (2) of the electromagnetic relay in this Embodiment Explanatory drawing (3) of the electromagnetic relay in this Embodiment The perspective view of the stationary contact part of the electromagnetic relay in this Embodiment The perspective view of the movable contact part of the electromagnetic relay in this Embodiment Explanatory drawing of the fixed contact part and movable contact part of the electromagnetic relay in this Embodiment The perspective view of the other fixed contact part of the electromagnetic relay in this Embodiment The perspective view of the other movable contact part of the electromagnetic relay in this Embodiment Explanatory drawing of the manufacturing method of the electromagnetic relay in this Embodiment Flow chart of manufacturing method of electromagnetic relay in the present embodiment Explanatory drawing of the opening part of the electromagnetic relay in this Embodiment

  The form for implementing this invention is demonstrated below. In addition, about the same member etc., the same code | symbol is attached | subjected and description is abbreviate | omitted.

(Electromagnetic relay)
The electromagnetic relay in this Embodiment is demonstrated. The electromagnetic relay according to the present embodiment includes a fixed contact portion 10 provided with a fixed contact 11, a fixed contact spring 12, a fixed-side arc runner 13, and the like, and a movable contact 21, a movable contact spring 22, a movable-side arc runner 23, and the like. And a contact portion 20. Further, an electromagnet part 30 is provided on the side where the movable contact part 20 is provided, and an armature 40 is provided at an end of the electromagnet part 30. The armature 40 is bent in the shape of a “he” at the center portion, and is connected so that the armature 40 can move around the center portion. In addition, the armature 40 becomes one side 40a which contacts the electromagnet part 30, and the other side 40b which operates the card | curd 41 mentioned later by making the bent center part into a boundary.

  Moreover, in this Embodiment, the electromagnet part 30 is formed of the twin coil. Since a single coil requires a diameter 2.5 times that of a twin coil, the electromagnetic relay can be further reduced in size by using a twin coil.

  The electromagnetic relay in the present embodiment is provided with a permanent magnet 50 for removing an arc and a yoke 60 formed of a magnetic material.

  In the electromagnetic relay according to the present embodiment, when a current flows through the electromagnet part 30, a magnetic field is generated in the electromagnet part 30, and one side 40a of the armature 40 formed of a material containing a magnetic material such as iron is an electromagnet. The part 30 is contacted. As a result, the armature 40 is movable around the central portion, and the movable contact spring 22 is pushed to the fixed contact portion 10 side via the card 41 provided on the other side 40b of the armature 40 to be fixed to the movable contact 21. The contact 11 comes into contact. In this way, the fixed contact 11 and the movable contact 21 are electrically connected and turned on.

  Further, by interrupting the current flowing through the electromagnet unit 30, the magnetic field generated in the electromagnet unit 30 disappears, and the force that attracts the one side 40a of the armature 40 is lost. Thereby, the fixed contact 11 and the movable contact 21 are separated by the restoring force of the movable contact spring 22, etc., and the electrical connection between the fixed contact 11 and the movable contact 21 is released, and the state is turned off.

  At this time, an arc is generated between the fixed contact 11 and the movable contact 21, but the electromagnetic relay in the present embodiment applies a magnetic field generated by the permanent magnet 50 to a region where the fixed contact 11 and the movable contact 21 are provided. By applying through the yoke 60, the arc can be removed, and this arc can be transferred to the fixed-side arc runner 13 and the movable-side arc runner 23. In this way, by transferring the arc generated at the fixed contact 11 and the movable contact 21 to the fixed-side arc runner 13 and the movable-side arc runner 23, the arc can be removed from the fixed contact 11 and the movable contact 21 at an early stage. Damage to the contact 11 or the movable contact 21 due to the arc can be suppressed.

  The fixed-side arc runner 13 is formed along the direction in which the fixed contact spring 12 extends in the fixed contact portion 10, and the movable-side arc runner 23 is along the direction in which the movable contact spring 22 extends in the vicinity of the movable contact 21. However, the distance from the fixed contact arc runner 13 is gradually increased away from the movable contact 21. In this way, by forming the distance between the fixed-side arc runner 13 and the movable-side arc runner 23 so that they are gradually separated, the fixed-side arc runner 13 and the movable-side arc runner 23 can smoothly generate an arc while gradually increasing the distance between the arcs. You can run.

  Further, an arc extinguishing grid 70 is provided between the end of the fixed side arc runner 13 and the end of the movable side arc runner 23, and an arc is generated to the end of the fixed side arc runner 13 and the end of the movable side arc runner 23. After running, the arc can be extinguished by the arc extinguishing grid 70. Therefore, in order to effectively and smoothly extinguish the arc by the arc extinguishing grid 70, the arc extinguishing grid 70 is preferably provided between the end of the fixed arc runner 13 and the end of the movable arc runner 23. .

  In the electromagnetic relay according to the present embodiment, the fixed contact portion 10, the movable contact portion 20, and the electromagnet portion 30 are installed on one surface side of the base 80, and the fixed contact portion is disposed on the other surface side of the base 80. Terminals 81, 82, 83 connected to the unit 10, the movable contact unit 20, the electromagnet unit 30 are provided. The case 90 and the cover 92 which are a part of the housing are a fixed contact portion 10, a movable contact portion 20, an electromagnet portion 30, an armature 40, a permanent magnet 50, and a yoke arranged on one surface side of the base 80. 60 and arc extinguishing grid 70 are formed so as to cover the base 80. In the electromagnetic relay according to the present embodiment, the exhaust port 95 is formed by the case 90 and the cover 92. Details of the exhaust port 95 will be described later.

(Magnetic flux and current)
Next, the direction of magnetic flux and the direction of current flow in the electromagnetic relay according to the present embodiment will be described with reference to FIGS. 3 to 5, the direction of current flow is indicated by arrow A, the direction of magnetic flux is indicated by arrow B, and the direction of the force applied to the arc (force applied to the electrons by the magnetic field) is indicated by arrow C. 3 is a diagram showing the main part viewed from the same plane as FIG. 1, FIG. 4 is a diagram showing the main part viewed from the direction indicated by arrow D1 in FIG. 1, and FIG. 1 is a diagram illustrating a main part viewed from a direction indicated by an arrow D2 in FIG.

  First, the permanent magnet 50 will be described. As the permanent magnet 50, a samarium cobalt magnet, a neodymium magnet, a ferrite magnet, or the like can be used, but a samarium cobalt magnet is preferable from the viewpoint of magnetic force and durability.

  Two yokes 60 are provided on both sides of the permanent magnet 50 so as to sandwich the fixed contact 11 and the movable contact 21 from both sides. The yoke 60 is formed in a plate shape from a material containing iron, cobalt, nickel, etc., and the magnetic field generated in the permanent magnet 50 is substantially perpendicular to the direction in which the fixed contact spring 12 extends and the direction in which the movable contact spring 22 extends. It is arrange | positioned so that it can apply to. Specifically, the yoke 60 is formed in a flat plate shape, and is installed so that the surfaces of the two yokes 60 are substantially parallel to each other, and one of the two yokes 60 is the S pole of the permanent magnet 50. The other is in contact with the N pole by magnetic force.

  The magnetic flux generated by the permanent magnet 50 passes through the two yokes 60 and generates a magnetic field in the space between the two yokes 60. The fixed contact 11 and the movable contact 21 exist in the space between the two yokes 60, and the direction of the magnetic flux is substantially perpendicular to the direction in which the fixed contact spring 12 extends and the direction in which the movable contact spring 22 extends. And it is applied so that the contact between the fixed contact 11 and the movable contact 21 is substantially perpendicular to the direction in which the contact is separated. In this embodiment, the magnetic field generated by the permanent magnet 50 by the two yokes 60 is strongly applied in a predetermined direction in the space between the two yokes 60. Therefore, the fixed contact 11, the movable contact 21, the fixed side arc runner 13, the movable side arc runner 23, and the arc extinguishing grid 70 exist in this space.

  As described above, in the present embodiment, the direction of the magnetic flux generated by the permanent magnet 50 via the yoke 60, the direction in which the contact between the fixed contact 11 and the movable contact 21, and the direction in which the fixed-side arc runner 13 extends are respectively They are almost orthogonal to each other.

  In the electromagnetic relay according to the present embodiment, the current is connected so as to flow from the fixed contact 11 to the movable contact 21. That is, when the fixed contact 11 and the movable contact 21 come into contact with each other, the terminal 81 connected to the fixed contact 10 is changed from the terminal 81 connected to the movable contact 20 via the fixed contact 11 and the movable contact 21. They are connected so that current flows.

  Thus, since a current flows from the fixed contact 11 to the movable contact 21, electrons flow from the movable contact 21 toward the fixed contact 11. In general, the movable contact spring 22 needs to move the movable contact 21, so that it is easily bent and is formed thinner than the fixed contact spring 12. Therefore, the heat capacity of the movable contact spring 22 is small. Therefore, when an arc is generated between the fixed contact 11 and the movable contact 21, the contact point on the side where the electrons collide becomes high temperature due to the collision of the electrons. Therefore, in the present embodiment, the current flows from the fixed contact 11. It is connected so as to flow to the movable contact 21.

  More specifically, since the fixed contact spring 12 is normally formed thick and has a large thermal capacity, when the electrons collide from the movable contact 21 toward the fixed contact 11, the fixed contact spring 12 or the like Although the thermal influence received by the collision is small, since the movable contact spring 22 is formed thin, the thermal capacity is small, and when electrons collide from the fixed contact 11 toward the movable contact 21, the heat caused by the collision of the electrons There is a high possibility that the movable contact spring 22 is melted and deformed by heat due to the influence of the influence. Therefore, in the present embodiment, the current is connected so that the current flows from the fixed contact 11 to the movable contact 21, that is, the electrons flow from the movable contact 21 to the fixed contact 11.

(Relationship between electromagnet and permanent magnet)
The electromagnetic relay in the present embodiment has an electromagnet part 30 and a permanent magnet 50, both of which generate a magnetic field. However, the electromagnet unit 30 has a function of bringing the fixed contact 11 and the movable contact 21 into contact with each other or separating them, and the permanent magnet has a function of removing an arc generated between the fixed contact 11 and the movable contact 21. Each has different functions.

  For this reason, if the positions of the electromagnet portion 30 and the permanent magnet 50 are close, the magnetic field generated on one side may affect the magnetic field on the other side. In particular, when the electromagnetic relay is downsized, adverse effects such as malfunctions may occur. May affect. For this reason, in the electromagnetic relay according to the present embodiment, as shown in FIG. 3, the electromagnet part 30 is arranged in the lower left part and the permanent magnet 50 is arranged in the upper right so as to sandwich the fixed contact 11 and the movable contact 21. ing. That is, the fixed contact 11 and the movable contact 21 are disposed between the electromagnet portion 30 and the permanent magnet 50. In this way, by separating the positions where the electromagnet unit 30 and the permanent magnet 50 are installed, the influence of the magnetic field generated on one side on the magnetic field on the other side, that is, the influence of each leakage magnetic field can be prevented.

  Moreover, in this Embodiment, the electromagnet part 30 for moving the movable contact 21 is arrange | positioned at the side of the movable contact 21 near the movable contact 21 from a viewpoint of size reduction, A permanent magnet 50 is arranged. In order to apply a strong magnetic field between the fixed contact 11 and the movable contact 21, it is preferable to dispose the permanent magnet 50 near the fixed contact 11 and the movable contact 21, and this is because the yoke 60 is provided. The same applies to the case where it is used.

(Fixed side arc runner and movable side arc runner)
Next, the fixed side arc runner and the movable side arc runner in the electromagnetic relay according to the present embodiment will be described.

  As shown in FIG. 6, the fixed contact portion 10 in the present embodiment is formed by punching a single metal plate and performing processing such as bending. The fixed contact spring 12 is provided with a fixed contact 11 in the vicinity of one end, and is connected to the fixed side support 14 at the other end. Further, a frame portion 15 connected to the fixed side support portion 14 is provided so as to surround the periphery of the fixed contact spring 12, and the fixed contact spring 12 and the frame portion 15 are formed to be substantially parallel. .

  Specifically, three sides of the fixed contact spring 12 are formed by punching a metal plate, and a frame portion 15 is formed around the fixed contact spring 12. The fixed contact spring 12 and the frame portion 15 are connected via a fixed-side support portion 14 at a portion corresponding to the remaining one side of the fixed contact spring 12 that has not been punched. Thereby, since the fixed contact spring 12 is displaced corresponding to the contact between the fixed contact 11 and the movable contact 21, etc., it can function as a spring. The frame portion 15 remains in a predetermined shape without being displaced corresponding to the contact between the fixed contact 11 and the movable contact 21, and the fixed-side protrusion 16 described later is kept in a predetermined position. Yes.

  A fixed-side arc runner 13 formed in the direction in which the fixed contact spring 12 extends is provided at the end of the frame portion 15 on the side opposite to the fixed-side support portion 14. A fixed-side protrusion 16 extending from the frame portion 15 toward the fixed contact 11 is provided on the side where the fixed contact 11 is provided in the direction opposite to the direction in which the fixed-side arc runner 13 extends. Note that the fixed-side protrusion 16 is bent in the vicinity of the connection portion between the fixed-side support portion 14 and the frame portion 15 so as to be close to the fixed contact 11.

  Further, as shown in FIG. 7, the movable contact portion 20 in the present embodiment is formed by punching a single metal plate and performing a process such as bending. The movable contact spring 22 is provided with a movable contact 21 in the vicinity of one end, and is connected to the movable support 24 at the other end. Further, a frame portion 25 connected to the movable side support portion 24 is provided so as to surround the periphery of the movable contact spring 22, and the movable contact spring 22 and the frame portion 25 are formed to be substantially parallel. .

  Specifically, three sides of the movable contact spring 22 are formed by punching a metal plate, and a frame portion 25 is formed around the movable contact spring 22. The movable contact spring 22 and the frame portion 25 are connected via a movable-side support portion 24 at a portion corresponding to the remaining one side of the movable contact spring 22 that has not been punched. Thereby, since the movable contact spring 22 is displaced corresponding to the contact between the fixed contact 11 and the movable contact 21, etc., it can function as a spring. Note that the frame portion 25 is not displaced corresponding to the contact between the fixed contact 11 and the movable contact 21, and remains in a predetermined shape, and a movable side protrusion 26 described later is maintained at a predetermined position. ing.

  A movable side arc runner 23 is provided at the end of the frame portion 25 on the side opposite to the movable side support portion 24. The movable-side arc runner 23 includes a connecting portion 23a formed along the direction in which the frame portion 25 extends, a straight portion 23c bent by the bent portion 23b, and an outer side formed by bending the end of the straight portion 23c at the bent portion 23d. It is formed by the portion 23e. The direction in which the straight line portion 23c extends is bent at the bent portion 23b so as to be smaller than the right angle with respect to the direction in which the frame portion 25 extends, and the direction in which the outer portion 23e extends is substantially the same as the direction in which the frame portion 25 extends. It is bent at the bent portion 23d so as to be parallel.

  Further, the bent portions 23b and 23d are provided with a predetermined roundness, and the generated arc can be smoothly run also in the bent portions 23b and 23d. In addition, on the side on which the movable contact 21 that is opposite to the movable arc runner 23 is provided, a movable projection 26 that extends from the frame 24 toward the movable contact 21 is provided.

  In the present embodiment, the angle formed between the straight line portion 23c and the frame portion 25 in the movable arc runner 23 is bent so as to be smaller than the right angle so that the distance from the fixed arc runner 13 is gradually increased. Is formed. Thereby, an arc can be smoothly run in the linear part 23c. In addition, the angle | corner which the linear part 23c and the frame part 25 make means the angle of the linear part 23c bent with respect to the frame part 25, and the state which is not bent is 0 degree. The movable protrusion 26 is bent in the vicinity of the connecting portion between the support 24 and the movable spring 22 so as to be close to the movable contact 21.

  In the present embodiment, the fixed contact portion 10 is fixed to the base 80 at the fixed side support portion 14, and the movable contact portion 20 is fixed to the base 80 at the movable side support portion 24.

  In the present embodiment, each of the fixed contact portion 10 and the movable contact portion 20 is formed by processing one metal plate, so that an electromagnetic relay can be formed at low cost. Further, since there is no connection member or the like that forms a contact resistance between the fixed contact 11 and the fixed arc runner 13 and between the movable contact 21 and the movable arc runner 23, the resistance between them is low, and the fixed contact 11 And the fixed-side arc runner 13 can be made more uniform, and the potentials of the movable contact 21 and the movable-side arc runner 23 can be made more uniform. Thereby, the arc generated between the fixed contact 11 and the movable contact 21 can be more smoothly transferred to the fixed-side arc runner 13 and the movable-side arc runner 23.

  In FIG. 8, the enlarged view of the contact part of the stationary contact 11 and the movable contact 21 in the electromagnetic relay in this Embodiment is shown. The fixed contact 11 is formed so as to be close to the fixed protrusion 16 connected to the fixed arc runner 13, and the movable contact 21 is close to the movable protrusion 26 connected to the movable arc runner 23. It is formed to do.

  Thus, since the fixed contact 11 and the fixed side protrusion 16 are close to each other, and the movable contact 21 and the movable side protrusion 26 are close to each other, the fixed contact 11 and the movable contact 21 are separated from each other. An arc is generated, but due to the magnetic flux generated by the permanent magnet 50, the generated arc is easily transferred from between the fixed contact 11 and the movable contact 21 to between the fixed projection 16 and the movable projection 26. . Thereafter, the arc transferred between the fixed-side protruding portion 16 and the movable-side protruding portion 26 runs through the fixed-side arc runner 13 and the movable-side arc runner 23. As described above, in the present embodiment, the arc generated between the fixed contact 11 and the movable contact 21 can be smoothly transferred to the fixed arc runner 13 and the movable arc runner 23. The damage at 21 can be reduced.

  In the present embodiment, the reliability and the like may be further improved by increasing the heat capacity in the vicinity of the fixed contact 11 and the movable contact 21. Specifically, as shown in FIG. 9, the heat capacity in the fixed contact 11 may be increased by providing a fixed contact auxiliary portion 111 that reinforces the connection portion between the fixed contact spring 12 and the fixed contact 11. At this time, the protrusion side auxiliary part 116 may be provided also on the fixed side protrusion part 16 to which the arc is transferred from the fixed contact 11 to increase the heat capacity in the fixed side protrusion part 16.

  Further, as shown in FIG. 10, the heat capacity in the movable contact 21 may be increased by providing a movable contact auxiliary portion 121 that reinforces the connection portion between the movable contact spring 22 and the movable contact 21. At this time, the protrusion-side auxiliary portion 126 may be provided also on the movable-side protrusion 26 to which the arc is transferred from the movable contact 21 to increase the heat capacity of the movable-side protrusion 26.

  Thereby, it becomes difficult to receive the thermal damage by an arc, and reliability and safety | security can be improved.

(Manufacturing method of electromagnetic relay)
Next, the manufacturing method of the electromagnetic relay in this Embodiment is demonstrated based on FIG.11 and FIG.12. The electromagnetic relay in the present embodiment can be formed by connecting members constituting the electromagnetic relay from one direction (a direction parallel to the Z axis).

  First, in step 102 (S102), the electromagnet unit 30 having the armature 40 connected to the base 80 is installed. The electromagnet part 30 is installed so that a magnetic field can be generated in the Z-axis direction, and the armature 40 is installed so that one side 40a is located on the upper part of the electromagnet part 30.

  Next, in step 104 (S104), the fixed contact portion 10 and the movable contact portion 20 are installed. Specifically, an insulating case 91 having openings on both sides in the Z-axis direction is installed on the base 80 in a direction parallel to the Z-axis, and further, the fixed contact 10 and the movable contact 10 are moved to the base 80 where the electromagnet unit 30 is not installed. The contact portion 20 is installed so that the terminals 81 and 82 are on the base 80 side from the direction parallel to the Z-axis. At this time, the movable contact portion 20 is installed on the side where the electromagnet portion 30 is provided, and the movable side arc runner 23 in the movable contact portion 20 is positioned above the electromagnet portion 30 (Z-axis direction). Is done.

  Next, in step 106 (S106), the yoke 60, the arc extinguishing grid 70, and the permanent magnet 50 are installed. Specifically, one opening of the case 90 having openings on both sides in the Z-axis direction and the base 80 are connected. At this time, the case 90 is connected to the base 80 in a direction parallel to the Z axis. Thereafter, the yoke 60, the arc extinguishing grid 70, and the permanent magnet 50 are installed in a direction parallel to the Z axis.

  Next, in step 108 (S108), the cover 92 is installed. Specifically, the cover 92 is connected in a direction parallel to the Z axis so as to cover the other opening of the case 90 in the Z axis direction. Thereby, the electromagnetic relay in this Embodiment can be produced.

  In this embodiment, since the components constituting the electromagnetic relay shown in FIG. 11 can be supplied and assembled in order from the bottom, that is, the components constituting the electromagnetic relay can be supplied and assembled from the same direction. The electromagnetic relay can be manufactured with high efficiency and low cost. Note that the base 80, the case 90, the insulating case 91, the cover 92, and the like are formed of a resin material.

(exhaust port)
The base 80, the case 90, and the cover 92 formed in this manner serve as a casing for the electromagnetic relay according to the present embodiment. In the present embodiment, as shown in FIG. 13, when the arc is generated, the pressure in the housing can be prevented from increasing, and the vaporized gas generated by the arc can be discharged. An exhaust port 95 is formed by 90 and the cover 92.

  The exhaust port 95 has a plurality of bent portions in order to prevent entry of dust and the like from the outside. By forming such a bent portion, entry of dust or the like can be prevented as much as possible. Further, a dust storage part 96 is provided in a part of the exhaust port 95, and foreign substances such as dust that have entered the opening 95 from the outside can be stored in the dust storage part 96.

  As mentioned above, although the form which concerns on implementation of this invention was demonstrated, the said content does not limit the content of invention.

DESCRIPTION OF SYMBOLS 10 Fixed contact part 11 Fixed contact 12 Fixed contact spring 13 Fixed side arc runner 14 Fixed side support part 15 Frame part 16 Fixed side protrusion part 20 Movable contact part 21 Movable contact 22 Movable contact spring 23 Movable side arc runner 24 Movable side support part 25 Frame Part 26 movable side protrusion 30 electromagnet part 40 armature 50 permanent magnet 60 yoke 70 arc extinguishing grid 80 base 81, 82, 83 terminal 90 case 91 insulating case 92 cover 95 exhaust port

Claims (6)

A fixed contact provided on the fixed contact spring;
A movable contact provided on the movable contact spring;
An electromagnet for applying a force to the movable spring via an armature and bringing the movable contact into contact with the fixed contact;
A magnet for generating a magnetic field between the fixed contact and the movable contact;
A fixed-side arc runner connected to the fixed spring, provided at a position away from the fixed spring from a connection portion with the fixed spring;
A movable arc runner connected to the movable spring and provided at a position away from the movable spring from a connecting portion with the movable spring;
From the side on which the fixed-side arc runner is provided, a fixed-side protruding portion protruding to the fixed contact side, and
From the side where the movable-side arc runner is provided, a movable-side protruding portion protruding toward the movable contact,
The electromagnetic relay characterized by having.   One or two or more portions selected from a connection portion between a fixed contact and a fixed spring, a connection portion between a movable contact and a movable spring, a fixed-side protrusion, and a movable-side protrusion are formed thick. The electromagnetic relay according to claim 1. A fixed contact provided on the fixed contact spring;
A movable contact provided on the movable contact spring;
An electromagnet for applying a force to the movable spring via an armature and bringing the movable contact into contact with the fixed contact;
A magnet for generating a magnetic field between the fixed contact and the movable contact;
A fixed-side arc runner connected to the fixed spring, provided at a position away from the fixed spring from a connection portion with the fixed spring;
A movable arc runner connected to the movable spring and provided at a position away from the movable spring from a connecting portion with the movable spring;
Have
The fixed contact spring and the fixed arc runner are formed by processing the same metal plate,
The electromagnetic relay according to claim 1, wherein the movable contact spring and the movable arc runner are formed by processing another identical metal plate. Between the connection portion with the fixed spring and the fixed-side arc runner, a frame portion provided around the fixed contact spring is provided,
Between the connection part with the movable spring and the movable side arc runner is connected via a frame provided around the movable contact spring,
4. The electromagnetic relay according to claim 1, wherein the fixed-side arc runner and the movable-side arc runner are fixed at predetermined positions. 5. A movable contact portion having an electromagnet portion installed in a base, a fixed contact portion having a fixed contact, a fixed contact spring and a fixed-side arc runner, a movable contact, a movable contact spring, and a movable-side arc runner in an area where the electromagnet portion is not installed. The process of installing
Installing a yoke so as to sandwich the fixed contact and the movable contact;
Installing an arc extinguishing grid between an end of the stationary arc runner and an end of the movable arc runner;
Installing a magnet for generating a magnetic flux between the fixed contact and the movable contact via the yoke;
And the fixed contact portion, the movable contact portion, the yoke, the arc extinguishing grid, and the magnet are installed in the same direction. The direction in which the fixed contact spring extends is substantially the same direction as the same direction,
6. The method of manufacturing an electromagnetic relay according to claim 5, wherein a direction in which the movable contact spring extends is substantially the same as the same direction.

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