JP2010033719A - Electromagnetic relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic relay which suppresses driving energy in a card from becoming greater by suppressing melting of the card. <P>SOLUTION: The electromagnetic relay includes a projection 100, which is arranged on the side opposite to a fixed contact 30a on a moving contact plate 31, and an engaging section 200, which is arranged on a pressing section 22 of the card 2 to engage with the projection 100 in a way that it is freely movable in the action direction of the card 2. Thus, since the projection 100 is projected in the side opposite to the side on which an arc discharge occurs due to the contact of the moving contact 31a to the moving contact plate 31, an influence due to the arc discharge of the moving contact 31a, which affects the projection 100, is suppressed efficiently. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electromagnetic relay, and more particularly to an electromagnetic relay in which a movable contact plate supporting a movable contact is pressed with a card interlocked with an armature.

  In a conventional electromagnetic relay (electromagnetic relay), a movable contact in a normally open position comes into contact with a fixed contact by exciting an electromagnet portion by signal input. Specifically, the movable contact plate provided in a cantilever state is provided with a movable contact, the movable contact is disposed opposite to the fixed contact, and is moved by a card driven by an electromagnet portion via an armature. The movable contact is pressed against the fixed contact by pressing the contact plate.

  At this time, an insertion part (protrusion part) is provided at the tip part which is a pressing part of the card that presses the movable contact plate, and the insertion part is slidably inserted into a guide hole (through hole) formed in the movable contact plate. (For example, refer to Patent Document 1). This card is made of, for example, resin.

Such a conventional electromagnetic relay can stably press the movable contact plate without shifting the pressing position of the card by inserting the insertion portion provided at the tip of the card into the guide hole of the movable contact plate. it can.
Japanese Utility Model Publication No. 2-13377386

  However, in such a conventional electromagnetic relay, since the guide hole is arranged on the same plane as the movable contact in the movable contact plate, the movable contact is energized with the movable contact and the fixed contact being separated from each other. When arc discharge is generated from the arc, arc heat or arc vapor easily reaches the guide hole through the space between the movable contact and the guide hole, and the peripheral surface of the guide hole is easily heated. For this reason, the surface of the insertion portion of the card that slides in the guide hole is melted to increase the sliding resistance of the card, and it is necessary to increase the driving energy of the card in order to drive the card against the sliding resistance. There is a problem that there is.

  Then, an object of this invention is to provide the electromagnetic relay which can suppress the fusion | melting of a card | curd and can suppress the increase in the drive energy of a card | curd.

  According to a first aspect of the present invention, there is provided an electromagnet portion, an armature that is driven by the electromagnet portion to reciprocate, a fixed contact, a movable contact that is disposed to face the fixed contact with a space therebetween, and a cantilever state. A movable contact plate that supports the movable contact, and a card that is reciprocally driven and is driven by the armature to press and bend the movable contact plate to bring the movable contact into contact with the fixed contact. In the electromagnetic relay comprising: a protrusion on the side of the movable contact plate opposite to the fixed contact side, and the protrusion on the tip of the card is relatively movable in the operating direction of the card. An engaging portion is provided.

  According to a second aspect of the present invention, in the electromagnetic relay according to the first aspect, the engaging portion is formed in a hole shape into which the protruding portion is inserted.

  According to a third aspect of the present invention, in the electromagnetic relay according to the first aspect, the protrusion includes a wide portion in which a base end portion is widened in a width direction of the movable contact plate, and a tip portion is stepped from the wide portion. A narrow portion projecting into a shape, and the engaging portion is provided continuously with the shelf that engages with the wide portion and opens in a distal direction of the movable contact plate. And a bottomed groove portion that is open in the distal direction of the movable contact plate by inserting a narrow portion.

  According to a fourth aspect of the present invention, in the electromagnetic relay according to the first aspect, the protrusion includes a recess having a bifurcated tip, and the engagement portion engages the protrusion and moves the movable portion. It is characterized by comprising a shelf part opened in the tip end direction of the contact plate, and a fitting part provided continuously to the shelf part and fitted into the recess.

  According to a fifth aspect of the present invention, in the electromagnetic relay according to the first aspect, the protrusion includes a base-direction bent portion having a tip portion bent in a base direction of the movable contact plate, and the engaging portion. Is provided with an elongated hole portion for fitting the base direction bent portion so as to be relatively movable.

  According to a sixth aspect of the present invention, in the electromagnetic relay according to the first aspect, the protrusion is provided at a base end portion, and is provided at a wide end portion widened in a width direction of the movable contact plate, and a distal end portion. A narrow bent portion protruding in a step shape from the wide portion and bent toward the base portion of the movable contact plate, and the engaging portion engages with the wide portion and extends in the distal direction of the movable contact plate And a groove that is provided on the shelf and fits the narrow bent portion so as to be relatively movable.

  According to a seventh aspect of the present invention, in the electromagnetic relay according to the first aspect, the protrusion is provided at a lower position corresponding to a lower portion of the engagement portion, and a distal end portion is in a distal direction of the movable contact plate. A lower protrusion provided with a bent distal direction bent portion, and a lower protrusion provided at an upper position corresponding to the upper portion of the engaging portion and disposed in a pair on both sides in the width direction of the lower protrusion. The engaging portion is provided on the shelf that engages with the lower protruding portion and opens in the distal direction of the movable contact plate, and is relatively movable on the distal bent portion of the lower protruding portion. And a groove portion to be fitted to.

  According to an eighth aspect of the present invention, in the electromagnetic relay according to the first aspect, the protruding portion protrudes at a position corresponding to one side of the engaging portion, and the movable contact plate is located inside the protruding tip portion. An inner bent piece that is bent in the base portion direction, the engaging portion being engaged with the protrusion and opening in the distal direction of the movable contact plate, provided on the shelf portion, And a groove for fitting the bent piece so as to be relatively movable.

  According to a ninth aspect of the present invention, in the electromagnetic relay according to the first aspect, the protruding portion protrudes at a position corresponding to the other side of the engaging portion, and the movable contact point is outside the protruding tip portion. An outer bent piece bent in the base portion direction of the plate, the engaging portion is provided on the shelf portion, a shelf portion that engages with the protrusion and opens in a distal direction of the movable contact plate, And a groove for fitting the inner bent piece so as to be relatively movable.

  According to a tenth aspect of the present invention, in the electromagnetic relay according to the first aspect, the protrusion protrudes as a surface along the longitudinal direction of the movable contact plate at a position corresponding to the central portion of the engagement portion. And an upper bent piece that is bent in the width direction of the movable contact plate on the upper side of the protruding tip portion, and the engaging portion includes a groove portion that fits the protruding portion so as to be relatively movable, and the upper portion And a shelf that engages with the bent piece and opens in the distal direction of the movable contact plate.

  According to an eleventh aspect of the present invention, in the electromagnetic relay according to any one of the first to tenth aspects, the protrusion is formed of a metal.

  A twelfth aspect of the present invention is the electromagnetic relay according to any one of the first to eleventh aspects, wherein the protrusion is formed by bending a part of the movable contact plate. .

  According to the present invention, the protrusion is located on the side opposite to the fixed contact side of the movable contact plate, that is, the side opposite to the side where arc discharge is generated by the movable contact with respect to the movable contact plate. As a result, even if arc discharge is generated by the movable contact, it is possible to suppress the arc heat and arc vapor from reaching the protrusions, thereby suppressing the melting of the card and increasing the driving energy of the card. Can be suppressed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
1 to 11 show a first embodiment of the present invention, and FIG. 1 shows an electromagnetic relay in a state where an electromagnet part and a body of (a) are disassembled, and an electromagnet part of (b) is assembled to the body. 2 is a front sectional view of the electromagnetic relay (a), a plan view of (b), and a cross section taken along line II-II in (a) of (a). FIG. 3 is an explanatory view shown by a bottom view of (d), FIG. 3 is a rear sectional view of the electromagnetic relay, FIG. 4 is a sectional view taken along line IV-IV in FIG. FIG. 6 is a cross-sectional view of the main part of the electromagnetic relay shown in FIG. 6A, which is a normally closed contact plate mounting portion, and FIG. 6B is a normally open contact plate mounting portion. FIG. 6 is an exploded perspective view showing the inside of the electromagnetic relay. 7 is a perspective view showing the electromagnetic relay with the cover removed, FIG. 8 is an external perspective view of the electromagnetic relay, FIG. 9 is a rear view showing a contact portion of the electromagnetic relay, and FIG. 10 is a movable contact. Perspective view showing a state in which the projection and the card engagement portion of the plate is engaged, FIG. 11 is a perspective view showing a state in which the engaging portion of the projection and the card of the movable contact plate and separated.

  As shown in FIGS. 1-8, the electromagnetic relay R of 1st Embodiment is interlocked with the electromagnet part 1, the armature 16 act | operated by this electromagnet part 1, the contact part 3 mentioned later, and the armature 16, The armature 16 is generally configured to include a card 2 made of a synthetic resin that presses and bends the movable contact plate 31 to bring the movable contact 31a into contact with a normally-open contact 30a as a fixed contact.

  As shown in FIG. 9, the contact portion 3 includes a normally-open contact 30a as a fixed contact, a movable contact 31a that is opposed to the normally-open contact 30a and is normally open at a predetermined interval, and the movable contact 31a. It is arranged on the opposite side of the normally open contact 30a, and includes a movable contact 31a and a normally closed contact 32a that is normally closed.

  The normally open contact 30a is fixedly provided on one end side of the normally open contact plate 30 formed of a conductive material, and the movable contact 31a is provided in a cantilever state and can be deformed by spring force. The normally closed contact 32 a is provided on the plate 31, and is provided on one end side of the normally closed contact plate 32 made of a conductive material.

  The internal structure parts such as the electromagnet part 1, the armature 16, the contact part 3, and the card 2 described above are housed inside the outer shell formed by the body 4 and the cover 5 made of synthetic resin, respectively.

  The body 4 is provided with storage grooves 49a to 49c opened on one side in the short width direction where the contact plates 30 to 32 are arranged on one end side in the longitudinal direction, and an electromagnet portion on the other end side in the longitudinal direction. A storage recess 42 opened on the other side of the short width direction in which 1 is disposed is provided. The cover 5 has a substantially box shape that is open on one side of the body 4 and is attached to the body 4 so as to cover the electromagnet portion 1, the contact portion 3, and the like.

  The electromagnet portion 1 includes an iron core 10 having a flange portion 10a that is a magnetic pole at one end portion in the longitudinal direction, a coil bobbin 11 that has flange portions 11a and 11b at both ends in the longitudinal direction, and the iron bobbin 11 that is attached. The coil block 13 which consists of the coil 12 wound between the parts 11a and 11b is provided.

  The electromagnet portion 1 is formed in a substantially L shape from a magnetic material and a support member 14 that supports a coil terminal 13a formed integrally with the flange portion 11a of the coil bobbin 11 on the flange portion 10a side. And a yoke 15 that is magnetically coupled to an end of the coil block 13 opposite to the flange 10a and covers one end face and a side face of the coil block 13.

  The armature 16 has a substantially flat plate shape, one end of which is pivotally supported by a hinge spring 17 at the tip of the other side of the yoke 15, and the other end is connected to and separated from the flange portion 10 a of the iron core 10.

  The end of the coil 12 is connected to the coil terminal 13a, the hinge spring 17 is fixed to the tip of the other side of the yoke 15 by caulking or welding, and the other end of the armature 16 is connected to the iron core 10. It is energized in the direction away from the collar portion 10a. Further, the support member 14 is formed with a groove 14 a that meshes with a protrusion 4 b that protrudes from the end surface of the body 4 that faces the support member 14, and the tip of the coil terminal 13 a protrudes from the lower surface of the support member 14. is there.

  Of the storage grooves 49a to 49c provided in the body 4, the storage grooves 49a and 49c on both sides are normally opened with the normally open contact plate 30 facing outward and the normally open contact 30a and the normally closed contact 32a facing each other. An open contact plate 30 and a normally closed contact plate 32 are respectively press-fitted. Terminal pieces 30 b and 32 b are provided continuously and integrally on the other end side of the normally open contact plate 30 and the normally closed contact plate 32, and the tips of the terminal pieces 30 b and 32 b protrude from the lower surface side of the body 4.

  A terminal piece 31b is coupled to the other end of the movable contact plate 31, and the terminal piece 31b is press-fitted into the central storage groove 49b to fix the movable contact plate 31 in the storage groove 49b. At this time, the movable contacts 31 a and 31 a formed on both surfaces of the movable contact plate 31 respectively face the normally open contact 30 a and the normally closed contact 32 a, and the tip of the terminal piece 31 b protrudes from the lower surface side of the body 4. To do.

  A rib 42a is provided on the inner side surface of the storage recess 42 provided in the body 4, and the electromagnet portion 1 is accommodated in the two spaces of the storage recess 42 partitioned by the rib 42a. Is disposed in the housing recess 42 so that the armature 16 faces away from the contact portion 3. In addition, a groove 4a is formed on the lower peripheral surface of the body 4 to prevent the seal agent from rising when the electromagnetic relay R is sealed by applying a sealant to the lower surface of the body 4 and the support member 14. It is.

  As shown in FIGS. 2 (c) and 5 (a), the card 2 is provided with locking claws 21, 21 that are respectively locked to recesses 16 a formed at both side edges of the distal end portion of the armature 16 on one end side. At the other end, a pressing portion 22 for pressing the movable contact plate 31 is provided.

  Further, the card 2 is opposed to the wall portion 41 constituting the ceiling of the storage recess 42 and is bridged between the armature 16 and the movable contact plate 31 so that the electromagnetic relay R can be reduced in size and thickness. Yes.

At this time, the card 2 is reciprocated along the upper surface of the wall 41 using the wall 41 as a support.

In addition, the width dimension of the pressing part 22 is narrower than the width dimension of the other site | part of the card | curd 2, and the pressing part 22 is located near the opening side of the accommodation recess 42, and is arrange | positioned.

  Thereby, interference with later-described ribs 5a and 5b protruding from the inner surface of the cover 5 can be avoided, and the electromagnet portion 1 and the contact portion 3 can be separated from the pressing portion 22 away from the opening side of the housing recess 42. The creepage distance along the surface of the card 2 can be increased.

  Further, a slot 24 for inserting a locking projection 11c projecting from the flange 11a is provided in a portion of the card 2 corresponding to the flange 11a of the coil bobbin 11, and the moving direction of the card 2 is determined by the locking projection 11c. Is regulated. In addition, a protrusion 5c protruding inward is provided on the ceiling surface of the cover 5, and the upper surface of the card 2 is in sliding contact with the protrusion 5c, so that the card 2 can be moved without backlash.

  In this electromagnetic relay R, since the contact plates 30 to 32 are arranged on one surface side in the short width direction of the body 4 and the electromagnet portion 1 is arranged on the other surface side, between the contact portion 3 and the electromagnet portion 1. Insulation performance can be improved by increasing the insulation distance. Further, a groove opened on the opening side of the housing recess 42 is formed in the insulating wall 43 on the contact portion 3 side of the housing recess 42 and the part of the body 4 between the insulating wall 43 and the normally closed contact plate 32. 44 and 45 are provided, respectively. On the other hand, ribs 5a and 5b that enter the grooves 44 and 45, respectively, are formed at portions corresponding to the grooves 44 and 45 on the inner surface of the cover 5. Accordingly, when the cover 5 is attached to the body 4, the ribs 5a and 5b enter the grooves 44 and 45, respectively, and the insulating wall 43 and the ribs 5a and 5b double the space between the electromagnet portion 1 and the contact portion 3. It is designed to be insulated.

  Moreover, the wall 41 is formed in a flat surface by providing a flat protrusion 50 on the surface between the electromagnet 1 and the contact 3 on the wall 41 constituting the ceiling of the storage recess 42. Compared with the case where it exists, the creeping distance along the wall part 41 surface between the electromagnet part 1 and the contact part 3 can be lengthened by the height of the protrusion 50. FIG. Thereby, the insulation distance between the electromagnet part 1 and the contact part 3 becomes long, and insulation is improved.

  By the way, since the protrusion 50 protrudes from the wall part 41 which comprises the ceiling of the storage recess 42, when the end surface 50a of the protrusion 50 contacts the card | curd 2, the movement range of the card | curd 2 is controlled and the coil bobbin 11 is controlled. It also has a function as a stopper for restricting the moving range of the card 2 together with the locking projection 11c provided on the flange portion 11a.

  Therefore, in the electromagnetic relay R, when the coil 12 is energized, the electromagnet portion 1 is excited, and the armature 16 is attracted to the flange portion 10a of the iron core 10, and the end portion facing one side of the yoke 15 is shown in FIG. a) rotate clockwise in the middle. As the armature 16 rotates, the card 2 moves to the right in FIG. 2A, the pressing portion 22 presses the movable contact plate 31 toward the normally open contact plate 30 side, and the movable contact 31a opens with the normally closed contact 32a. At the same time, the contact is made with the normally open contact 30a.

  On the other hand, when energization of the coil is stopped, the force for attracting the armature 16 disappears, and the armature 16 rotates counterclockwise in FIG. 2A by the spring return force of the movable contact plate 31 and the hinge spring 17. As the armature 16 rotates, the card 2 moves to the left in FIG. 2A, and the pressing portion 22 does not have the force to press the movable contact plate 31 toward the normally open contact plate 30 side. Due to the force, the movable contact plate 31 moves to the normally closed contact plate 32 side, the movable contact 31a is separated from the normally open contact 30a, and comes into contact with the normally closed contact 32a.

  Here, in 1st Embodiment, as shown in FIGS. 9-11, it protrudes on the opposite side to the normally open contact 30a side of the movable contact plate 31, ie, the right side surface side of the movable contact plate 31 in FIG. In addition to projecting the portion 100, an engagement portion 200 is provided at the tip end portion (pressing portion 22) of the card 2 to engage the projection portion 100 so as to be relatively movable in the operation direction of the card 2 (left and right direction in FIG. 9). It is.

  As shown in FIG. 11, the protrusion 100 is provided at an upper end portion that is offset from a substantially central portion where the movable contact 31 a of the movable contact plate 31 is disposed to the one-side corner C <b> 1 side. A part of the plate 31 is bent. That is, as shown in FIG. 9, the movable contact plate 31 extends with the vertical direction as the longitudinal direction, the lower part thereof is a base part 31c fixed to the body 4, and the upper part is a tip 31d. The tip portion 31d is partially cut and raised to the side opposite to the normally open contact 30a side to form a protrusion 100. The protrusion 100 protrudes substantially perpendicular to the general surface 31G of the movable contact plate 31.

  Further, the protrusion 100 is made of metal. That is, in this embodiment, the movable contact plate 31 is formed in a plate shape by a metal material having a spring force such as spring steel, and a part of the movable contact plate 31 formed by the metal material is bent. As a result, the protrusion 100 is formed of the same metal material as that of the movable contact plate 31.

  As shown in FIG. 11, the engaging part 200 is formed in a hole shape into which the protruding part 100 is inserted. That is, the engaging portion 200 is formed by a hole portion along the moving direction of the card 2 at a substantially central portion of the front end surface of the pressing portion 22 of the card 2, and the hole portion is longer than the protruding length L of the protruding portion 100. It is slightly deeper and the cross-sectional shape is a rectangular shape along the cross-sectional shape of the protrusion 100.

  Then, when the card 2 is assembled, as shown in FIG. 10, the hole-shaped engaging portion 200 is inserted into the protruding portion 100, and the pressing portion 22 of the card 2 is formed by the protruding portion 100 and the engaging portion 200. Is guided so as to press a predetermined part of the movable contact plate 31. At this time, as shown in FIG. 9, in a normal time (when the electromagnet portion 1 is not excited), a predetermined gap x is provided between the pressing portion 22 of the card 2 and the movable contact plate 31, and the electromagnet portion. At the time of excitation of 1, the engaging portion 200 moves along the protrusion 100 as the card 2 moves to fill the gap x, and then the pressing portion 22 presses the movable contact plate 31.

  With the electromagnetic relay R according to the first embodiment having the above configuration, the protrusion 100 is provided on the movable contact plate 31 and the protrusion 100 is received by the engaging portion 200 provided on the card 2 so as to be relatively movable. It has become. At this time, the protrusion 100 protrudes on the opposite side of the movable contact plate 31 from the normally open contact 30a side. Thereby, even if arc discharge is generated by the movable contact 31a, it is possible to suppress the arc heat and arc vapor from reaching the protrusion 100, so that the card 2 is prevented from melting and the driving energy of the card 2 is reduced. The increase can be suppressed. Moreover, since it can suppress that the card | curd 2 fuse | melts in this way, the smooth operation | movement of the card | curd 2 can be maintained and the lifetime improvement of the electromagnetic relay R can be achieved.

  In addition, although it is possible to suppress the influence of the arc heat on the protrusion 100 in this way, the protrusion 100 is provided on the movable contact plate 31 side and the engagement part 200 is provided on the card 2 side. It can be set as a simple structure.

  Moreover, since the engaging part 200 was formed in the hole shape which inserts the projection part 100, the type | mold structure for forming the engaging part 200 at the time of the injection molding of the card | curd 2 can be simplified.

  Further, since the protrusion 100 is made of metal, the protrusion 100 can have excellent heat resistance. Therefore, the protrusion 100 is welded to the engaging portion 200 even when arc heat or arc steam acts. Can be suppressed.

  Furthermore, since the protrusion 100 can be provided integrally with the movable contact plate 31 by bending a part of the movable contact plate 31, the number of parts can be reduced and the assemblability can be improved. It can be improved. Further, by bending the movable contact plate 31 made of metal to form the protrusion 100, the protrusion 100 can be easily formed of metal.

(Second Embodiment)
12 and 13 show a second embodiment of the present invention, FIG. 12 is a perspective view showing a state in which the protrusion of the movable contact plate and the engaging portion of the card are separated, and FIG. 13 is the protrusion of the movable contact plate. It is a perspective view which shows the state which the part and the engaging part of the card | curd engaged. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 12 and 13, the electromagnetic relay R of the second embodiment basically has a protrusion 100 on the side of the normally open contact 30 a (see FIG. 9) of the movable contact plate 31 as in the first embodiment. The protrusion 100 is engaged with the engagement portion 200 of the card 2 so as to be relatively movable.

  Here, the electromagnetic relay R of the second embodiment is mainly different from the first embodiment in that, as shown in FIG. 12, the protrusion 100 widens the base end in the width W direction of the movable contact plate 31. A wide portion 101 and a narrow portion 102 having a tip portion protruding from the wide portion 101 in a step shape are provided. Further, the engaging portion 200 is engaged with the wide portion 101 and opened to the tip 31d direction (upward in the drawing) of the movable contact plate 31, and the shelf portion 201 is provided continuously to the narrow portion 201 and has the narrow width. And a bottomed groove 202 opened in the direction of the tip 31d of the movable contact plate 31 (upward in the drawing) by inserting the portion 102.

  When the card 2 is assembled, as shown in FIG. 13, since the engaging portion 200 is opened upward, the pressing portion 22 of the card 2 is positioned below the protruding portion 100 of the movable contact plate 31. Then, the shelf 201 of the engaging part 200 is positioned on the wide part 101 of the protruding part 100, and the card 2 is lifted to fit the narrow part 102 of the protruding part 100 into the bottomed groove part 202 of the engaging part 200. To do.

  Therefore, according to the electromagnetic relay R of the second embodiment, as in the first embodiment, the protruding portion 100 is provided on the opposite side of the movable contact plate 31 from the normally open contact 30a side. Thus, it is possible to efficiently suppress the influence of the arc discharge caused by the movable contact 31a on the protrusion 100.

  In particular, in the second embodiment, since the upper part of the shelf part 201 and the bottomed groove part 202 of the engaging part 200 is opened, it can be easily assembled to the wide part 101 and the narrow part 102 of the protrusion part 100 from below. it can. As a result, it is possible to improve the assembling property between the protrusion 100 and the engaging portion 200, and since the engaging portion 200 is opened on one side (upper side), the mold structure for forming the engaging portion 200 is simplified. can do.

(Third embodiment)
14 and 15 show a third embodiment of the present invention, FIG. 14 is a perspective view showing a state in which the protrusion of the movable contact plate and the engaging portion of the card are separated, and FIG. 15 shows the movable contact plate. It is a perspective view which shows the state which the protrusion part of this and the engaging part of the card | curd engaged. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 14 and 15, the electromagnetic relay R of the third embodiment basically has a protrusion 100 on the side of the normally open contact 30 a (see FIG. 9) on the movable contact plate 31, as in the first embodiment. The protrusion 100 is engaged with the engagement portion 200 of the card 2 so as to be relatively movable.

  Here, the electromagnetic relay R of the third embodiment is mainly different from the first embodiment in that, as shown in FIG. 14, the protrusion 100 is provided with a recess 103 having a bifurcated tip, and is engaged. The portion 200 is engaged with the protrusion 100 and is opened in the direction of the tip 31d of the movable contact plate 31 (upward in the figure), and the shelf 200 is provided continuously to the shelf 203 and fits into the recess 103. A convex portion 204 is provided.

  When the card 2 is assembled, as shown in FIG. 15, since the engaging portion 200 is opened upward as in the second embodiment, the shelf portion 203 and the convex portion 204 of the engaging portion 200 are opened. Is raised from below the protrusion 100 to fit the protrusion 204 into the recess 103.

  Therefore, according to the electromagnetic relay R of the third embodiment, as in the first embodiment, the protrusion 100 is provided on the opposite side of the movable contact plate 31 from the normally open contact 30a side, and thus the configuration is simplified. Thus, it is possible to efficiently suppress the influence of the arc discharge caused by the movable contact 31a on the protrusion 100.

  In particular, in the third embodiment, since the upper portion of the engaging portion 200 is opened as in the second embodiment, the engaging portion 200 can be easily assembled from below the protruding portion 100. As a result, the one side (upper side) of the engaging part 200 is opened, and the mold structure for forming the engaging part 200 can be simplified.

(Fourth embodiment)
16 and 17 show a fourth embodiment of the present invention, FIG. 16 is a perspective view showing a state in which the protrusion of the movable contact plate and the engaging portion of the card are separated, and FIG. 17 shows the movable contact plate. It is a perspective view which shows the state which the protrusion part of this and the engaging part of the card | curd engaged. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 16 and 17, the electromagnetic relay R of the fourth embodiment basically has a protrusion 100 on the side of the normally open contact 30 a (see FIG. 9) of the movable contact plate 31 as in the first embodiment. The protrusion 100 is engaged with the engagement portion 200 of the card 2 so as to be relatively movable.

  Here, the electromagnetic relay R of the fourth embodiment is mainly different from the first embodiment in that, as shown in FIG. 16, the protrusion 100 has a distal end portion in the direction of the base 31 c of the movable contact plate 31 (downward in the drawing). ) Is provided with a bent portion 104 in the base direction. Further, the engaging portion 200 is provided with a long hole portion 205 for fitting the base direction bent portion 104 so as to be relatively movable. In the present embodiment, the upper half portion of the pressing portion 22 of the card 2 is cut out to form a shelf portion 206, and the elongated hole portion 205 is formed in the center portion of the shelf portion 206.

  Then, when assembling the card 2, as shown in FIG. 17, the engaging portion 200 is lifted from below the protruding portion 100, and the elongated hole portion 205 is fitted into the base direction bent portion 104.

  Therefore, according to the electromagnetic relay R of the fourth embodiment, as in the first embodiment, the protrusion 100 is provided on the opposite side of the movable contact plate 31 from the normally open contact 30a side, and thus the configuration is simplified. Thus, it is possible to efficiently suppress the influence of the arc discharge caused by the movable contact 31a on the protrusion 100.

  In particular, in the fourth embodiment, since the upper portion of the engaging portion 200 is opened as in the second embodiment, the engaging portion 200 can be easily assembled from below the protruding portion 100, and the protruding portion 100. As a result, the one side (upper side) of the engaging part 200 is opened, and the mold structure for forming the engaging part 200 can be simplified.

(Fifth embodiment)
18 and 19 show a fifth embodiment of the present invention, FIG. 18 is a perspective view showing a state in which the protrusion of the movable contact plate and the engaging portion of the card are separated, and FIG. 19 shows the movable contact plate. It is a perspective view which shows the state which the protrusion part of this and the engaging part of the card | curd engaged. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 18 and 19, the electromagnetic relay R of the fifth embodiment basically has a protrusion 100 on the side of the normally open contact 30 a (see FIG. 9) on the movable contact plate 31 as in the first embodiment. The protrusion 100 is engaged with the engagement portion 200 of the card 2 so as to be relatively movable.

  Here, the electromagnetic relay R of the fifth embodiment is mainly different from the first embodiment in that, as shown in FIG. 18, the protrusion 100 has a wide base end that is widened in the width direction of the movable contact plate. The portion 105 and the narrow bent portion 106 that protrudes from the wide portion 105 in a stepped shape and is bent in the direction of the base 31c (downward in the drawing) of the movable contact plate 31 are provided. Further, the engaging portion 200 is engaged with the wide portion 105 and opened in the direction of the tip 31d of the movable contact plate 31 (upward in the drawing), and the narrow bent portion located on the shelf 207. And a groove 208 that fits 106 so as to be relatively movable.

  Then, when the card 2 is assembled, as shown in FIG. 19, the engaging portion 200 is lifted from below the protruding portion 100, and the groove portion 208 is fitted to the narrow bent portion 106.

  Therefore, according to the electromagnetic relay R of the fifth embodiment, as in the first embodiment, the protrusion 100 is provided on the opposite side of the movable contact plate 31 from the normally open contact 30a side. Thus, it is possible to efficiently suppress the influence of the arc discharge caused by the movable contact 31a on the protrusion 100.

  In particular, in the fifth embodiment, since the upper portion of the engaging portion 200 is opened as in the second embodiment, the engaging portion 200 can be easily assembled from below the protruding portion 100. As a result, the one side (upper side) of the engaging part 200 is opened, and the mold structure for forming the engaging part 200 can be simplified.

(Sixth embodiment)
20 and 21 show a sixth embodiment of the present invention, FIG. 20 is a perspective view showing a state in which the protrusion of the movable contact plate and the engaging portion of the card are separated, and FIG. 21 shows the movable contact plate. It is a perspective view which shows the state which the protrusion part of this and the engaging part of the card | curd engaged. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 20 and 21, the electromagnetic relay R of the sixth embodiment basically has a protrusion 100 on the side of the normally open contact 30 a (see FIG. 9) of the movable contact plate 31 as in the first embodiment. The protrusion 100 is engaged with the engagement portion 200 of the card 2 so as to be relatively movable.

  Here, the electromagnetic relay R of the sixth embodiment is mainly different from the first embodiment in that the protrusion 100 is provided at a lower position corresponding to the lower portion of the engaging portion 200, as shown in FIG. A lower protrusion 108 provided with a front end bent portion 107 bent in the direction of the front end 31d (upward in the drawing) of the movable contact plate 31 and an upper position corresponding to the upper portion of the engaging portion 200 are provided at the front end thereof. And a pair of upper protrusions 109 arranged on both sides in the width direction of the lower protrusion 108. Further, the engaging portion 200 is engaged with the upper protrusion portion 109 and opened in the tip 31d direction (upward in the drawing) of the movable contact plate 31, and the lower portion protrusion portion 108 is positioned on the shelf portion 209. And a groove portion 210 for fitting the distal direction bending portion 107 so as to be relatively movable.

  When the card 2 is assembled, as shown in FIG. 21, the engaging portion 200 is lifted from below the protruding portion 100, the tip portion of the shelf portion 209 is abutted against the lower surface of the upper protruding portion 109, and the groove portion The lower protrusion 108 is fitted in 210.

  Therefore, according to the electromagnetic relay R of the sixth embodiment, as in the first embodiment, the protrusion 100 is provided on the opposite side of the movable contact plate 31 from the normally open contact 30a side, so the configuration is simplified. Thus, it is possible to efficiently suppress the influence of the arc discharge caused by the movable contact 31a on the protrusion 100.

  In particular, in the sixth embodiment, since the upper portion of the engaging portion 200 is opened as in the second embodiment, the engaging portion 200 can be easily assembled from below the protruding portion 100. As a result, the one side (upper side) of the engaging part 200 is opened, and the mold structure for forming the engaging part 200 can be simplified.

(Seventh embodiment)
22 and 23 show a seventh embodiment of the present invention, FIG. 22 is a perspective view showing a state in which the protrusion of the movable contact plate and the engaging portion of the card are separated, and FIG. 23 shows the movable contact plate. It is a perspective view which shows the state which the protrusion part of this and the engaging part of the card | curd engaged. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 22 and 23, the electromagnetic relay R of the seventh embodiment is basically the same as the first embodiment, and the protrusion 100 is on the normally open contact 30a (see FIG. 9) side of the movable contact plate 31. The protrusion 100 is engaged with the engagement portion 200 of the card 2 so as to be relatively movable.

  Here, the electromagnetic relay R of the seventh embodiment is mainly different from the first embodiment in that the protrusion 100 corresponds to one side (the front side in the figure) of the engaging portion 200 as shown in FIG. The inner bent piece 110 bent in the direction of the base 31c (downward in the figure) of the movable contact plate 31 is provided on the inner side (the other side in the figure) of the protruding tip part, and the engaging part 200 is A shelf 211 that engages with the protrusion 100 and opens in the direction of the tip 31d of the movable contact plate 31 (upward in the drawing) and the inner bent piece 110 that is located on the shelf 211 are fitted so as to be relatively movable. A groove 212 is provided.

  Then, when the card 2 is assembled, as shown in FIG. 23, the engaging portion 200 is lifted from below the protruding portion 100, the shelf portion 211 is abutted against the lower surface of the protruding portion 100, and inside the groove portion 212. The bent piece 110 is fitted.

  Therefore, according to the electromagnetic relay R of the seventh embodiment, as in the first embodiment, the protrusion 100 is provided on the opposite side of the movable contact plate 31 from the normally open contact 30a side. Thus, it is possible to efficiently suppress the influence of the arc discharge caused by the movable contact 31a on the protrusion 100.

  In particular, in the seventh embodiment, since the upper portion of the engaging portion 200 is opened as in the second embodiment, the engaging portion 200 can be easily assembled from below the protruding portion 100, and the protruding portion 100 As a result, the one side (upper side) of the engaging part 200 is opened, and the mold structure for forming the engaging part 200 can be simplified.

(Eighth embodiment)
24 and 25 show an eighth embodiment of the present invention, FIG. 24 is a perspective view showing a state in which the protrusion of the movable contact plate and the engaging portion of the card are separated, and FIG. 25 is the movable contact plate. It is a perspective view which shows the state which the protrusion part of this and the engaging part of the card | curd engaged. The same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIGS. 24 and 25, the electromagnetic relay R of the eighth embodiment basically has a protrusion 100 on the side of the normally open contact 30a (see FIG. 9) of the movable contact plate 31 as in the first embodiment. The protrusion 100 is engaged with the engagement portion 200 of the card 2 so as to be relatively movable.

  Here, the electromagnetic relay R of the eighth embodiment is mainly different from the first embodiment in that the protrusion 100 corresponds to the other side of the engaging portion 200 (the other side in the drawing) as shown in FIG. The outer bent piece 111 bent in the direction of the base 31d (upward in the figure) of the movable contact plate 31 is provided on the outer side (front side in the figure) of the protruding tip part. Is engaged with the protruding portion 100 and opened to the tip 31d direction (upward in the drawing) of the movable contact plate 31 and the outer bent piece 111 located on the shelf 213 so as to be relatively movable. And a groove portion 214 to be provided.

  Then, when the card 2 is assembled, as shown in FIG. 25, the engaging portion 200 is lifted from below the protruding portion 100 and the shelf portion 213 is abutted against the lower surface of the protruding portion 100, and the groove portion 214 has an outer side. The bent piece 111 is fitted.

  Therefore, according to the electromagnetic relay R of the eighth embodiment, as in the first embodiment, the protrusion 100 is provided on the opposite side of the movable contact plate 31 from the normally open contact 30a side, so the configuration is simplified. Thus, it is possible to efficiently suppress the influence of the arc discharge caused by the movable contact 31a on the protrusion 100.

  In particular, in the eighth embodiment, since the upper portion of the engaging portion 200 is opened as in the second embodiment, the engaging portion 200 can be easily assembled from below the protruding portion 100. As a result, the one side (upper side) of the engaging part 200 is opened, and the mold structure for forming the engaging part 200 can be simplified.

(Ninth embodiment)
26 and 27 show a ninth embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. FIG. 27 is a perspective view showing a state in which the protruding portion of the movable contact plate and the engaging portion of the card are engaged with each other.

  As shown in FIGS. 26 and 27, the electromagnetic relay R of the ninth embodiment basically has a protrusion 100 on the side of the normally open contact 30a (see FIG. 9) on the movable contact plate 31, as in the first embodiment. The protrusion 100 is engaged with the engagement portion 200 of the card 2 so as to be relatively movable.

  Here, the electromagnetic relay R of the ninth embodiment is mainly different from the first embodiment in that, as shown in FIG. 26, the protruding portion 100 is at a position corresponding to the center portion in the width direction of the engaging portion 200. An upper bent portion that is cut and raised so as to be a surface along the longitudinal direction (vertical direction in the drawing) of the movable contact plate 31 and is bent in the width W direction of the movable contact plate 31 above the protruding tip portion. While providing the piece 112, the engaging part 200 engages with the groove part 215 which fits the protrusion part 100 so that relative movement is possible, and the upper side bending piece 112, and the front-end | tip 31d direction (upward in the figure) of the movable contact plate 31 And an open shelf 216.

  When the card 2 is assembled, as shown in FIG. 27, the engaging portion 200 is lifted from below the protruding portion 100 to fit the groove portion 215 to the protruding portion 100 and the shelf portion 216 is bent upward. It is arranged on the lower surface of the piece 112.

  Therefore, according to the electromagnetic relay R of the ninth embodiment, as in the first embodiment, the protrusion 100 is provided on the opposite side of the movable contact plate 31 from the normally open contact 30a side, so the configuration is simplified. Thus, it is possible to efficiently suppress the influence of the arc discharge caused by the movable contact 31a on the protrusion 100.

  In particular, in the ninth embodiment, since the upper portion of the engaging portion 200 is opened as in the second embodiment, the engaging portion 200 can be easily assembled from below the protruding portion 100. As a result, the one side (upper side) of the engaging part 200 is opened, and the mold structure for forming the engaging part 200 can be simplified.

  By the way, in the first embodiment, the protrusion 100 is made of metal by bending a part of the movable contact plate 31, but the protrusion 100 is similarly formed in the second to ninth embodiments. Since a part of the movable contact plate 31 is bent, the protrusion 100 is made of metal, and welding due to arc heat can be suppressed.

  The present invention is not limited to the above-described embodiments, and various other embodiments can be adopted without departing from the gist of the present invention.

It is a principal part perspective view which shows the state which decomposed | disassembled the electromagnet part and body of (a), and the state which assembled | attached the electromagnet part of (b) to the body about the electromagnetic relay concerning 1st Embodiment of this invention. The electromagnetic relay according to the first embodiment of the present invention includes a front sectional view of (a), a plan view of (b), a sectional view taken along line II-II in (a) of (c), and (d) ) And a bottom view thereof. It is a back sectional view of the electromagnetic relay concerning a 1st embodiment of the present invention. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. It is principal part sectional drawing which shows the electromagnetic relay concerning 1st Embodiment of this invention with the attachment part of the normally closed contact plate of (a), and the attachment part of the normally open contact plate of (b). It is a disassembled perspective view which shows the inside of the electromagnetic relay concerning 1st Embodiment of this invention. It is a perspective view which shows the electromagnetic relay concerning 1st Embodiment of this invention in the state which removed the cover. 1 is an external perspective view of an electromagnetic relay according to a first embodiment of the present invention. It is a rear view which shows the contact part of the electromagnetic relay concerning 1st Embodiment of this invention. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 1st Embodiment of this invention and the engaging part of the card | curd engaged. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 1st Embodiment of this invention and the engaging part of a card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 2nd Embodiment of this invention and the engaging part of the card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 2nd Embodiment of this invention and the engaging part of the card | curd engaged. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 3rd Embodiment of this invention and the engaging part of a card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 3rd Embodiment of this invention and the engaging part of the card | curd engaged. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 4th Embodiment of this invention and the engaging part of a card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 4th Embodiment of this invention and the engaging part of the card | curd engaged. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 5th Embodiment of this invention and the engaging part of the card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 5th Embodiment of this invention and the engaging part of the card | curd engaged. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 6th Embodiment of this invention and the engaging part of the card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 6th Embodiment of this invention and the engaging part of the card | curd engaged. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 7th Embodiment of this invention and the engaging part of a card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 7th Embodiment of this invention and the engaging part of the card | curd engaged. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 8th Embodiment of this invention and the engaging part of a card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 8th Embodiment of this invention and the engaging part of the card | curd engaged. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 9th Embodiment of this invention and the engaging part of the card | curd isolate | separated. It is a perspective view which shows the state which the protrusion part of the movable contact plate of the electromagnetic relay concerning 9th Embodiment of this invention and the engaging part of the card | curd engaged.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electromagnet part 2 Card 16 Armature 22 Press part 30a Normally open contact (fixed contact)
31 Movable Contact Plate 31a Movable Contact 31c Movable Contact Plate Base 31d Movable Contact Plate Tip 100 Projection 101 Wide Part 102 Narrow Part 103 Concave 104 Base Bend Part 105 Wide Part 106 Narrow Bend Part 107 Front End Fold Bending portion 108 Bending portion in the front end direction 109 Upper protrusion 110 Inner bending piece 111 Outer bending piece 112 Upper bending piece 200 Engaging portion 201, 203, 206, 207, 209, 211, 213, 216 Shelf portion 202 Existence Bottom groove portion 204 Projection portion 205 Long hole portion 208, 210, 212, 214, 215 Groove portion R Electromagnetic relay

Claims (12)

An electromagnet part;
An armature that is driven by the electromagnet portion to reciprocate;
A fixed contact;
A movable contact disposed opposite to the fixed contact with an interval;
A movable contact plate provided in a cantilever state and supporting the movable contact;
A card that is reciprocally movable, driven by the armature, presses and bends the movable contact plate, and contacts the movable contact with the fixed contact;
In an electromagnetic relay comprising:
A protrusion is provided on the side of the movable contact plate opposite to the fixed contact, and an engagement portion is provided at the tip of the card to engage the protrusion in a movable manner relative to the card. An electromagnetic relay characterized by that. The electromagnetic relay according to claim 1,
The electromagnetic relay according to claim 1, wherein the engaging portion is formed in a hole shape into which the protruding portion is inserted. The electromagnetic relay according to claim 1,
The protruding portion includes a wide portion having a base end portion widened in the width direction of the movable contact plate, and a narrow portion having a tip portion protruding in a step shape from the wide portion,
The engaging portion includes a shelf that engages with the wide portion and opens in a distal direction of the movable contact plate, and a leading end of the movable contact plate that is provided continuously with the shelf and inserts the narrow portion. An electromagnetic relay comprising a bottomed groove portion that is open in a direction. The electromagnetic relay according to claim 1,
The protrusion includes a recess having a bifurcated tip.
The engaging portion includes a shelf portion that is engaged with the protrusion portion and opened in a distal end direction of the movable contact plate, and a convex portion that is provided continuously to the shelf portion and fits into the concave portion. An electromagnetic relay characterized by that. The electromagnetic relay according to claim 1,
The protrusion includes a base-direction bent portion that is bent in a base portion direction of the movable contact plate at a tip portion,
The electromagnetic relay according to claim 1, wherein the engaging portion includes an elongated hole portion that fits the base-direction bent portion so as to be relatively movable. The electromagnetic relay according to claim 1,
The protrusion includes a wide portion with a base end portion widened in the width direction of the movable contact plate, and a narrow bend in which a tip portion protrudes from the wide portion in a step shape and is bent in the base portion direction of the movable contact plate. And comprising
The engaging portion includes a shelf that engages with the wide portion and opens in a distal direction of the movable contact plate, and a groove that is positioned on the shelf and fits the narrow bent portion so as to be relatively movable. The electromagnetic relay characterized by comprising. The electromagnetic relay according to claim 1,
The protrusion is provided at a lower position corresponding to a lower portion of the engagement portion, and a lower protrusion provided with a distal-direction bent portion bent in the distal direction of the movable contact plate at the distal end thereof, An upper protrusion provided at an upper position corresponding to the upper portion of the engaging portion, and a pair of upper protrusions disposed on both sides in the width direction of the lower protrusion,
The engaging portion engages with the upper projecting portion and is opened in the distal direction of the movable contact plate, and the distal portion bent portion of the lower projecting portion located on the shelf is relatively movable. An electromagnetic relay comprising: a fitting groove. The electromagnetic relay according to claim 1,
The protruding portion protrudes at a position corresponding to one side of the engaging portion, and includes an inner bent piece bent in the base portion direction of the movable contact plate on the inner side of the protruding tip portion.
The engaging portion includes a shelf that engages with the protrusion and opens in a distal direction of the movable contact plate, and a groove that is positioned on the shelf and fits the inner bent piece so as to be relatively movable. An electromagnetic relay characterized by comprising: The electromagnetic relay according to claim 1,
The protruding portion protrudes at a position corresponding to the other side of the engaging portion, and includes an outer bent piece that is bent in the base portion direction of the movable contact plate on the outer side of the protruding tip portion.
The engaging portion includes a shelf that engages with the protrusion and opens in a distal direction of the movable contact plate, and a groove that is positioned on the shelf and fits the outer bent piece so as to be relatively movable. An electromagnetic relay characterized by comprising: The electromagnetic relay according to claim 1,
The protruding portion protrudes as a surface along the longitudinal direction of the movable contact plate at a position corresponding to the center portion in the width direction of the engaging portion, and the width direction of the movable contact plate above the protruding tip portion. With the upper folded piece
The engaging portion includes a groove portion that fits the protrusion portion so as to be relatively movable, and a shelf portion that engages with the upper bent piece and opens in a distal end direction of the movable contact plate. Electromagnetic relay to do. In the electromagnetic relay as described in any one of Claims 1-10,
An electromagnetic relay characterized in that the protrusion is made of metal. In the electromagnetic relay as described in any one of Claims 1-11,
The electromagnetic relay according to claim 1, wherein the protrusion is formed by bending a part of the movable contact plate.

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