DE112015006404T5 - ELECTROMAGNETIC RELAY - Google Patents

Abstract

An electromagnetic relay (100) is provided with: an electromagnetic device (30) having a coil (32); a plurality of contact mechanisms each having a stationary contact (64) and a movable contact (76) arranged to face and can be brought into contact with and separated from the stationary contact (64); wherein the contact mechanisms are arranged in parallel along a contacting / disconnecting direction in which the movable contact (76) comes into contact with or separated from the fixed contact (64); and a drive unit (40) having a rotary block (41) which rotates in a different direction in response to a direction of current supplied to the coil (32) and adapted to contact the fixed contact (64) to bring the movable contact (76) or to separate the stationary contact (64) from the movable contact (76) by rotation of the rotary block (41). The electromagnetic device (30) is disposed with respect to the contact mechanisms in a direction crossing the contacting / disconnecting direction of the movable contact (76) with the stationary contact (64).

Description

TECHNICAL AREA

The present invention relates to an electromagnetic relay.

STATE OF THE ART

As an electromagnetic relay, for example, one has been described in Patent Document 1. This conventional electromagnetic relay has an electromagnet whose polarity is inverted in response to a current flow direction and a plurality of pairs of fixed terminals and movable terminals. Of these plural pairs of fixed terminals and movable terminals, the fixed terminals are respectively provided with a fixed contact, and the movable terminals are each provided with a movable contact part having a movable contact arranged to be in fixed contact is facing. The movable contact parts of the respective movable terminals are coupled to each other by a movable card in accordance with the polarity of an electromagnet, so that the plurality of movable contacts can be brought into contact or disconnected at the same time.

STATE OF THE ART DOCUMENT

Patent Document

• Patent Document 1: Chinese Utility Model Registration with Publication No. CN2014435354Y

OVERVIEW OF THE INVENTION

THE PROBLEM TO BE SOLVED BY THE INVENTION

However, in the above conventional electromagnetic relay, the plurality of pairs of fixed terminals and movable terminals, and the electromagnet are arranged in parallel. Therefore, there have been cases where setting a limit on the dimension of the outer diameter of the electromagnetic relay due to a reduction in size makes it impossible to ensure a desired insulation distance between the fixed terminal and the movable terminal.

In view of the above problem, it is an object of the present invention to provide an electromagnetic relay suitable for a size reduction.

MEANS TO SOLVE THE TASK

To achieve the above object, an electromagnetic relay of the present invention comprises: an electromagnetic device having at least a single coil; a plurality of contact mechanisms, each having a stationary contact and a movable contact arranged to face the stationary contact and to be brought into contact therewith and separated therefrom, the contact mechanisms being arranged in parallel along a contacting / Separation direction are arranged, in which the movable contact comes into contact with the stationary contact or separated from it; and a drive unit having a rotation block that rotates in a different direction depending on a direction of current supplied to the coil and configured to bring the movable contact of each of the plurality of contact mechanisms into contact with the stationary contact to separate the movable contact from the stationary contact, by rotation of the rotary block. The electromagnetic device is disposed with respect to the contact mechanisms in a direction crossing the contacting / disconnecting direction.

EFFECT OF THE INVENTION

According to the electromagnetic relay of the present invention, the electromagnetic device is disposed in the direction crossing the contacting / disconnecting direction in which the movable contact comes into contact with or separated from the fixed contact. Therefore, as compared with an electromagnetic relay disposed in the contacting / disconnecting direction of the movable contact with / from the stationary contact, the gap between the stationary terminal and the movable terminal can be made large. Accordingly, for example, even if the dimension of the outer diameter of the electromagnetic relay is limited due to the reduction in size, it is possible to ensure a desired insulation distance between the fixed terminal and the movable terminal.

According to an embodiment of the present invention, the drive unit comprises a movable member adapted to move the movable contact of each of the plurality of contact mechanisms in the same direction, and a transmission member adapted to cause rotation of the rotary block on the to transmit movable member by rotation in a direction which is different from a rotational direction of the rotary block when the rotary block rotates.

According to this embodiment, by the rotation of the rotary block, the movable contacts of the plurality of contact mechanisms are moved in the same direction by means of the transmission member and the movable member. This can facilitate contacting and separation between a plurality of stationary contacts and moving contacts. Further, an amount of movement of the movable member can be adjusted by adjusting the position of the rotation axis of the transmission member. This allows, for example, a reduction in the power consumption of the electromagnetic relay.

According to an embodiment of the present invention, the drive unit is disposed between the contact mechanisms which are adjacent to each other.

According to this embodiment, the transmission member is connected to the movable member at its inner position, thereby enabling distribution of a load applied to the movable member at the time of movement of the movable contact. This eliminates the need to reinforce the movable member, thereby enabling a reduction in the manufacturing cost of the electromagnetic relay.

According to an embodiment of the present invention, the electromagnetic relay further comprises a base adapted to receive the electromagnetic device, the plurality of contact mechanisms, and the drive unit. The base may include a first pivot support configured to rotatably support the pivot block and a second pivot support configured to rotatably support the transmission element.

According to this embodiment, the electromagnetic relay further includes the base which has the first rotation support configured to rotatably support the rotation block and the second rotation support configured to rotatably support the transmission element. This allows a very accurate positioning of the rotary block and the transmission element.

According to an embodiment of the present invention, the first and second rotational supports are provided between the electromagnetic device and the movable member along a parallel direction of the plurality of contact mechanisms, and the second rotational support is disposed between the first rotational support and the movable member.

According to this embodiment, the second rotational support may be disposed at a freely selected position between the first rotational support and the movable member. Therefore, it is possible to increase the degree of freedom in the design of the electromagnetic relay.

 According to an embodiment of the present invention, the electromagnetic device is disposed so as to be adjacent to the contact mechanisms, and also arranged such that a center axis of the coil is parallel to the direction in which the stationary contact and the movable contact come into contact with each other or separated from each other.

According to this embodiment, it is possible to reduce an unused space in the electromagnetic relay, thereby facilitating a reduction in the size of the electromagnetic relay.

BRIEF DESCRIPTION OF THE DRAWINGS

1 FIG. 12 is a perspective view illustrating an electromagnetic relay of one embodiment of the present invention. FIG.

2 FIG. 15 is a perspective view illustrating a state in which a cover of the electromagnetic relay of FIG 1 was removed.

3 FIG. 11 is an exploded perspective view of the electromagnetic relay of FIG 1 ,

4 FIG. 11 is an exploded perspective view of the electromagnetic relay of FIG 1 , viewed from one direction, which differs from that of 3 is.

5 is a perspective view of a lower part of the electromagnetic relay of 1 ,

6 FIG. 13 is an exploded perspective view of an electromagnetic device in the electromagnetic relay of FIG 1 ,

7 FIG. 13 is an exploded perspective view of a rotary block in the electromagnetic relay of FIG 1 ,

8th FIG. 12 is a plan view showing an OFF state of the electromagnetic relay of FIG 1 illustrated.

9 FIG. 12 is a plan view showing an ON state of the electromagnetic relay of FIG 1 illustrated.

MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, in describing configurations represented in the drawings, terms indicating directions such as "up", "down", "left", and "right" are used, and other terms, which have those. The purpose of using these terms is to facilitate the understanding of the embodiment by means of the drawings. Accordingly, these terms do not necessarily indicate directions used at the time of actual use of the embodiment of the present invention. A technical scope of the invention recited in the claims should not be interpreted restrictively by use of these terms.

An electromagnetic relay 100 according to one embodiment of the present invention as shown in FIGS 1 to 4 illustrates: a base 10 ; a contact mechanism section 20 , an electromagnetic device 30 , and a drive unit 40 in the lower part 10 are included; and a cover 50 which the lower part 10 covered. Note that in the 3 and 4 the cover 50 is omitted for simplicity of description.

As in the 3 and 4 Illustrates the lower part 10 in a plan view of a rectangular box shape with one or a single open end. As in 5 illustrated is this lower part 10 provided with: a first to a third receiving portion 11 . 12 . 13 for receiving the contact mechanism section 20 ; a fourth receiving section 14 for receiving the electromagnetic device 30 ; a fifth receiving section 15 for receiving the drive unit 40 ; and a through hole 18 for fixing the electromagnetic relay 100 on a substrate or the like, which is not illustrated.

As in 5 Illustrated are the first to third receiving section 11 . 12 . 13 at intervals along a lower side surface of the base relative to the Y direction 10 arranged. The first to third recording section 11 . 12 . 13 are each provided with: connecting grooves 111 . 121 . 131 and connection holders 112 . 122 . 132 for mounting fixed connections 21 . 22 . 23 ; and connecting grooves 113 . 123 . 133 and connection holders 114 . 124 . 134 for mounting mobile connections 24 . 25 . 26 , The connection grooves 111 . 113 . 121 . 123 . 131 . 133 are provided so as to be the lower side surface of the lower part with respect to the Y direction 10 run through.

In the first and second receiving sections 11 . 12 is a passage section 16 along the lower side surface of the base with respect to the Y direction 10 provided with the first receiving section 11 and the second receiving portion 12 communicates. Further, in the second and third receiving portions 12 . 13 a passage section 17 along the lower side surface of the base with respect to the Y direction 10 provided with the second and the third receiving portion 12 . 13 communicates. These passage sections 16 . 17 are arranged in a row.

As in 5 Illustrated is the fourth receiving section 14 along the upper side surface of the base with respect to the Y direction 10 arranged, and has projections 141 and grooves 142 on, attached to the bottom surface of the base 10 are provided. The projections 141 are at both, with respect to the X direction, ends of the fourth receiving portion 14 provided, and the grooves 142 are at the lower end of the fourth receiving portion with respect to the Y direction 14 spaced apart.

As in 5 Illustrated is the fifth receiving section 15 arranged such that it with the fourth receiving portion 14 and the passage section 17 communicates, and has a pivot bearing 151 , which is an example of the first rotary support, and a rotary shaft 152 which is an example of the second rotary support. The pivot bearing 151 and the rotary shaft 152 are spaced along the Y-direction on the bottom surface of the base 10 intended. The pivot bearing 151 has a recessed shape with a circular opening, and is between the grooves 142 of the fourth receiving section 14 arranged. The rotary shaft 152 has a substantially cylindrical shape, and is between the pivot bearing 151 and the passage section 17 intended.

Furthermore, the fifth recording section 15 with a recessed section 153 for attaching a support plate section 44 provided later. This recessed section 153 has a circular opening and is below the groove in the Y direction 142 of the fourth receiving section 14 arranged.

As in 5 illustrated has the through hole 18 a circular shape and is at each of a pair of mutually facing corner portions of the base 10 intended.

As in 2 Illustrated is the contact mechanism section 20 formed from three contact mechanisms CM1 to CM3. As in the 3 and 4 illustrated is the contact mechanism CM1 of a pair consisting of a fixed terminal 21 and a mobile connection 24 educated. The contact mechanism CM2 is a pair consisting of a fixed terminal 22 and a mobile connection 25 educated. The contact mechanism CM3 is a pair consisting of a fixed terminal 23 and a mobile connection 26 educated.

Each of the fixed connections 21 . 22 . 23 is a rectangular plate-shaped body, and a first and a second wide section 61 . 62 provided at both longitudinal ends and a narrow portion 63 formed, the first wide section 61 and the second wide section 62 combines.

The first wide section 61 from each of the fixed connections 21 . 22 . 23 is with two fixed contacts 64 Mistake. These fixed contacts 64 have circular contact surfaces, each having a different diameter, and caulked and spaced from each other. Furthermore, the second wide section forms 62 from each of the fixed connections 21 . 22 . 23 a fixed connection section 62 , That is, the fixed terminal section 62 which is the second wide section 62 is formed by being partially bent, and has a substantially L-shape in cross section. Note that each of the fixed connectors 21 . 22 . 23 with a room 81 provided by the first and the second wide section 61 . 62 and the narrow section 63 is defined.

Each of the mobile connections 24 . 25 . 26 is from a body 71 and a movable contact part 72 educated.

As in 3 The body is illustrated 71 a rectangular plate-shaped body and a first wide section 73 and a second wide section 74 provided at both longitudinal ends and a narrow portion 75 formed, the first wide section 73 and the second wide section 74 combines. The first wide section 73 of the body 71 is cranked, and one end of the movable contact part 72 is caulked and at a longitudinal end of the first wide section 73 attached. Further, the second wide section forms 74 of the body 71 a movable connection section 74 , That is, the movable terminal section 74 which is the second wide section 74 is formed by being partially bent, and has a substantially L-shape in cross section, similar to the fixed terminal portion 62 , Note that the body 71 with a room 82 is provided by the first wide section 73 and the second wide section 74 and the narrow section 75 is defined.

As in 4 Illustrated is the movable contact part 72 formed by laminating four rectangular conductive leaf springs, and has two movable contacts 76 on that the fixed contact 64 assigned. A longitudinal end of the movable contact part 72 is caulked and attached to the body 71 attached to form a tight end. The other longitudinal end of the movable contact part 72 Make a free end and on this side of the free end are the two moving contacts 76 caulked and spaced apart from each other. Furthermore, this is movable contact part 72 provided with a slot passing through the center of the movable contact 76 passes through and longitudinally along the movable contact part 72 extends. The provision of this slot allows independent movement of the two movable contacts 76 ,

A curved section 77 is on the side of the fixed end of the movable contact part 72 intended. In addition to the slot between the moving contacts 76 is the curved section 77 provided with two slots parallel to the slot between the movable contacts 76 extend substantially into four sections in the width direction in the movable contact part 72 is divided equally. By providing this curved section 77 becomes an expansion and shrinkage of the movable contact part 72 absorbed and reduced to ensure smooth operating characteristics.

The free end of the movable contact part 72 is with two pairs of claw sections 78 . 79 provided, which extend in a direction perpendicular to the surface, which at the movable contacts 76 is attached, and the pairs are arranged symmetrically to one another, with the slot disposed therebetween, wherein the slot between the movable contacts 76 is provided. The claw sections 78 . 79 are arranged such that the claw portion 78 , which is closer to the slot, farther from the movable contact 76 as the claw section 79 located farther away from the slot.

As in 6 illustrates the electromagnetic device 30 a bobbin 31 , a coil 32 , an iron core 33 , Yokes 34 . 35 , and three coil terminals 36 . 37 . 38 on.

The bobbin 31 has a hull (not shown) around which the spool 32 wound is, and leadership sections 311 . 312 on, which are provided at both ends of this hull. The hull is with a through hole 313 provided on each of the guide sections 311 . 312 is open. As in 2 Illustrated is the guide section 312 with an outwardly projecting portion 314 having three terminal holes (not shown). This outwardly projecting section 314 is with an engagement groove 315 provided in the upper end of the side surface of the base 10 intervenes.

The sink 32 is formed for example of a set coil and a reset coil. The set coil and the reset coil are wound so that magnetic fields are generated in mutually opposite directions by the supply of currents. That is, the direction of a current supplied to the set coil and the direction of a current supplied to the reset coil are different from each other.

The iron core 33 has a rectangular plate-like shape and is formed of a magnetic material. This iron core 33 is with projecting sections 331 at both ends for caulking and fixing the yokes 34 . 35 provided, and is in the through hole 313 in the bobbin 31 inserted.

Each of the yokes 34 . 35 has a substantially L-shaped plate-like shape and is formed of a magnetic material. The yokes 34 . 35 have first planar sections 341 . 351 who are in contact with the leadership sections 311 . 312 of the bobbin 31 and second planar sections 342 . 352 on, extending along the hull of the bobbin 31 extend. The first planar sections 341 . 351 are with Einpassrillen 343 . 353 provided in which the projecting sections 331 of the iron core 33 are fitted, and the second planar sections 342 . 352 are with registration tabs 344 . 354 provided, which in the grooves 142 of the lower part 10 are fitted.

The coil connections 36 . 37 . 38 are in the terminal holes in the outwardly projecting portion 314 of the bobbin 31 fitted. Further, the coil terminals 36 . 37 respectively connected to lead wires of the set coil, and the coil terminals 37 . 38 are each connected to lead wires of the reset coil.

As in the 3 and 4 Illustrated is the drive unit 40 from the rotary block 41 , a transmission lever 42 , which is an example of the transfer element of a card 43 , which is an example of the movable member, and a support plate portion 44 educated.

As in 7 illustrated has the rotary block 41 a body 411 , a pair of plate-shaped movable iron parts 412 . 413 , and a permanent magnet 414 on, and is formed by insertion in a state in which the permanent magnet 414 between the pair of movable iron parts 412 . 413 is held. Further, this body is 411 with a drive arm section 415 , which with the transmission lever 42 is connected, and a pair of rotary shaft sections 416 Mistake. As in 3 illustrated, the drive arm portion extends 415 in a direction substantially orthogonal to the pair of movable iron parts 412 . 413 is, and its end surface is formed arcuate. The rotary shaft sections 416 each have substantially cylindrical shapes, which in the pivot bearing 151 of the lower part 10 can be used, and are arranged so that they have the same central axis.

As in the 3 and 4 illustrates the transmission lever 42 a rectangular plate-shaped form. A longitudinal end of the transmission lever 42 is with a transmission section 421 provided, wherein the end face is formed in an arc shape. Further, the other longitudinal end of the transmission lever 42 with a connection bearing 422 for connection to the rotary block 41 Mistake. As in 4 Illustrates the connection bearing 422 a groove shape into which the tip of the drive arm section 415 of the rotary block 41 can intervene. Further, between the transmission section 421 and the connection warehouse 422 a through hole 423 provided with a circular opening. This through hole 423 is formed such that an opening on the upper surface side (in FIG 3 illustrated) and an opening on the lower surface side (in FIG 4 illustrated) have different diameters, and the opening on the side of the lower surface has a shape such that the rotating shaft 152 of the lower part 10 can be used therein.

As in the 3 and 4 Illustrates the map 43 three insertion grooves 431 . 432 . 433 on, in which the respective movable contact parts 72 the movable connections 24 . 25 . 26 be used. As in 4 is illustrated between the insertion grooves 432 . 433 a transfer warehouse 434 provided, the transfer warehouse 434 has a recessed shape into which the transfer section 421 the transmission lever 42 can be used.

Further, as in 4 illustrates two protruding parts 435 , which from the bottom surface of the base 10 to project on the bottom surface of the map 43 intended. These projecting parts 435 each have an end face in one Arch shape, and are each between the insertion grooves 431 . 432 and between the insertion grooves 432 . 433 intended.

As in the 3 and 4 illustrated has the support plate portion 44 in a plan view substantially a T-shape, and is made of a body 441 which has a rectangular shape in a plan view, and arms 442 formed in mutually opposite directions from one end of the body 441 extend out.

A through hole 443 is on a pers 441 provided, and a DrehwellEnde the Körenabschnitt 444 is provided at the other end. The through hole 443 has a circular opening and has a shape such that the rotary shaft portion 416 of the rotary block 41 can be used therein. The rotary shaft section 444 has a substantially cylindrical shape, which is in the opening on the side of the upper surface of the through hole 423 in the transmission lever 42 can be used.

The poor 442 have projections at their tips 445 for attaching the support plate section 44 on the lower part 10 on. The projections 445 have a substantially cylindrical shape in the recessed portion 153 of the lower part 10 is customizable.

As in 1 Illustrates the cover 50 a rectangular plate-like shape, which is capable of the opening of the lower part 10 to cover. Through holes 51 are at a pair of corner portions of the top surface of the cover 50 intended. The through hole 51 is arranged such that it together with the through hole 18 of the lower part 10 forms a single through hole when the cover 50 on the lower part 10 is mounted. Further, the side surface of the cover 50 with an opening 52 to cause the coil terminal 36 protrudes, and a groove 53 provided, in which the fixed connections 21 . 22 . 23 and the movable connections 24 . 25 . 26 be fitted.

Next is a method of assembling the electromagnetic relay 100 described with the above configuration.

First, the contact mechanism portion 20 and the card 43 in the lower part 10 assembled.

The contact mechanism section 20 is mounted as follows. First, with the card 43 in the passage sections 16 . 17 arranged, the fixed terminals 21 . 22 . 23 in the respective first to third accommodating sections 11 . 12 . 13 of the lower part 10 assembled. Then the movable connections 24 . 25 . 26 in the respective first to third accommodating sections 11 . 12 . 13 of the lower part 10 assembled.

As in 2 Illustrated at this time stands out from each of the fixed ports 21 . 22 . 23 and the movable connections 24 . 25 . 26 a part starting from the opening of the lower part 10 up. Meanwhile, the stationary contact 64 and the moving contact 76 arranged so that they face each other and in the X-direction can be brought into contact and separated from each other. That is, the contact mechanisms CM1 to CM3 are arranged in parallel along the X direction, and the fixed contact 64 and the moving contact 76 come into contact with each other or separate from each other along the X-direction.

Furthermore, the fixed connections 21 . 22 . 23 and the movable connections 24 . 25 . 26 positioned so that the rooms 81 . 82 and the passage sections 16 . 17 arranged in a row. This allows the card 43 along the passage sections 16 . 17 slides.

Furthermore, the card 43 arranged so that the projecting part 435 in contact with the bottom surface of the base 10 located and the transfer warehouse 434 between the stationary connection 23 and the mobile connection 25 located. As in this way the arc surface of the projecting part 435 in contact with the bottom surface of the base 10 It is possible to overcome the resistance associated with the sliding of the card 43 is connected to decrease. Further, the free ends of the movable contact parts 72 in the insertion grooves 431 . 432 . 433 the map 43 inserted, and between the claw sections 78 . 79 held so that they are prevented from coming out. Because the card 43 between the claw sections 78 . 79 of the movable contact part 72 Being held in this way makes it possible to reliably handle all moving contacts 76 the movable connections 24 . 25 . 26 to move in the same direction.

Note that the fixed connection 21 by fitting the narrow section 63 in the connection groove 111 of the first receiving section 11 , and fitting the end on the side of the first wide section 61 in the connection holder 112 is positioned. Similarly, the fixed connection becomes 22 by fitting the narrow section 63 in the connection groove 121 of the second receiving section 12 , and fitting the end on the side of the first wide section 61 in the connection holder 122 positioned. Furthermore, the fixed connection 23 by fitting the narrow section 63 in the connection groove 131 of the third receiving section 13 , and fitting the end on the side of the first wide section 61 in the connection holder 132 positioned.

The mobile connection 24 is done by fitting the narrow section 75 in the connection groove 113 of the first receiving section 11 , and by fitting the fixed end of the first wide section 73 in the connection holder 114 positioned. Similarly, the movable connection becomes 25 by fitting the narrow section 75 in the connection groove 123 of the second receiving section 12 , and fitting the fixed end of the first wide section 73 in the connection holder 124 positioned. The mobile connection 26 is done by fitting the narrow section 75 in the connection groove 133 of the third receiving section 13 , and fitting the fixed end of the first wide section 73 in the connection holder 134 positioned.

Next, the electromagnetic device 30 in the lower part 10 assembled. At this time, the electromagnetic device becomes 30 by fitting the alignment projections 344 . 354 the yokes 34 . 35 in the grooves 142 of the fourth receiving section 14 of the lower part 10 positioned, and then between the protrusions 141 of the fourth receiving section 14 assembled. That is, the electromagnetic device 30 is placed in a position orthogonal to the contacting / separating direction in which the movable contact 76 in contact with the fixed contact 64 is or is separated from this, and is adjacent to the contact mechanisms CM1 to CM3, and also arranged such that the central axis of the coil 32 parallel to the contacting / disconnecting direction of the movable contact 76 with the / from the fixed contact 64 is. When the electromagnetic device 30 in the lower part 10 as in 2 illustrated mounted, engages the engagement groove 315 of the outwardly projecting portion 314 of the bobbin 31 in the upper end of the side surface of the base 10 on, and the coil connection 36 lies outside of the lower part 10 free.

Note that either the contact mechanism section 20 or the electromagnetic device 30 can be mounted first.

Subsequently, the drive unit 40 with the exception of the card 43 in the lower part 10 assembled.

First, the turning block 41 in the fifth receiving section 15 of the lower part 10 assembled. At this time, the shooting block 41 by a single rotary shaft section 416 positioned in the pivot bearing 151 of the fifth receiving section 15 is inserted.

Next is the transmission lever 42 in the fifth receiving section 15 of the lower part 10 assembled. At this time, the transmission section becomes 421 the transmission lever 42 in the transfer warehouse 434 the map 43 used to the Antriebsarmabschnitt 415 of the rotary block 41 in the connection warehouse 422 the transmission lever 42 to engage, and the through hole 423 in the transmission lever 42 becomes the rotation shaft 152 of the lower part 10 placed. Consequently, the transmission lever 42 positioned.

Note that the pivot bearing 151 and the rotary shaft 152 between the electromagnetic device 30 and the card 43 along a parallel direction of the contact mechanisms CM1 to CM3 (that is, the Y direction), and the rotation shaft 152 between the pivot bearing 151 and the card 43 is arranged.

Subsequently, the support plate section 44 in the fifth receiving section 15 of the lower part 10 assembled. At this time, the other rotary shaft section becomes 416 of the rotary block 41 in the through hole 443 in the support plate section 44 introduced, the rotary shaft section 444 of the support plate section 44 gets into the through hole 423 in the transmission lever 42 introduced, and the lead 445 of the support plate section 44 will with the recessed section 153 of the lower part 10 engaged.

That is, the turning block 41 gets through the pivot bearing 151 of the lower part 10 and the through hole 443 of the support plate section 44 rotatably supported, and the central axis of the rotary shaft portion 416 of the rotary block 41 forms the axis of rotation of the rotary block 41 , Further, the transmission lever 42 rotatable from the rotary shaft 152 of the lower part 10 and the rotary shaft portion 444 of the support plate section 44 stored, and the central axis of the rotary shaft 152 of the lower part forms the axis of rotation of the transmission lever 42 ,

Finally the cover 50 on the lower part 10 mounted to the assembly of the electromagnetic relay 100 to complete.

Next is the operation of the electromagnetic relay 100 with the above configuration using the 8th and 9 to be discribed.

8th illustrates the electromagnetic relay 100 in an off state. At the electromagnetic relay 100 in the off-state becomes an end of the movable iron part 412 from the yoke 35 attracted and one end of the movable iron part 413 is from the yoke 34 attracted by the permanent magnet 414 of the rotary block 41 ,

At this time, the drive arm section is located 415 of the rotary block 41 on the left side of a straight line L1 in the X direction, which is the center of the rotary shaft section 416 of the rotary block 41 with the center of the rotary shaft 152 of the lower part 10 combines. In this way, the transmission lever 42 held such that the transmission section 421 located on the right side of the straight line L1 in the X direction to all moving contacts 76 from the fixed contacts 64 by means of the card 43 to separate.

When the setting coil of the coil 32 of the electromagnetic relay 100 in the off state, the in 8th is illustrated, a current is supplied and the set coil is energized, the magnetic force of the permanent magnet 414 of the rotary block 41 lifted, and the other end of the movable iron part 412 is from the yoke 34 Attracted while the other end of the movable iron part 413 from the yoke 35 is attracted. This will spin the block 41 counterclockwise and the Antriebsarmabschnitt 415 moves to the right side of the straight line L1 in the X direction.

By this movement of the drive arm section 415 the transmission lever turns 42 clockwise, more precisely, it turns in a direction different from the direction of rotation of the rotary block 41 is. Through this rotation of the transmission lever 42 slides the card 43 in the X direction to the left to all moving contacts 76 in contact with the fixed contacts 64 bring to. Therefore, the electromagnetic relay is switched from the off state to the in 9 illustrated on-state switched. Thereafter, even if the supply of the current to the set coil is terminated, the electromagnetic relay 100 held in the on state.

If in the in 9 On state represent a current of the reset coil of the coil 32 of the electromagnetic relay 100 is fed and the reset coil is energized, the magnetic force of the permanent magnet 414 of the rotary block 41 lifted, and one end of the movable iron part 412 is from the yoke 35 attracted while one end of the movable iron part 413 from the yoke 34 is attracted. This will spin the block 41 clockwise and the drive arm section 415 moves to the left side of the straight line L1 in the X direction.

By this movement of the drive arm section 415 the transmission lever turns 42 counterclockwise. Through this rotation of the transmission lever 42 slides the card 43 in the X direction to the right to all moving contacts 76 from the fixed contacts 64 to separate. Therefore, the electromagnetic relay is switched from the on state to the in 8th switched OFF state switched. Thereafter, even if the power supply to the set coil is terminated, the electromagnetic relay 100 held in the off state.

At the electromagnetic relay 100 with the above configuration is the electromagnetic device 30 arranged in a direction orthogonal to the contacting / disconnecting direction in which the movable contact 76 in contact with the fixed contact 64 passes or is separated from it. Therefore, as compared with an electromagnetic relay in which an electromagnetic device in the contacting / disconnecting direction of the movable contact 76 with the / from the fixed contact 64 is arranged, the distances or intervals between the fixed terminals 21 . 22 . 23 and the mobile connections 24 . 25 . 26 be made big. Accordingly, it is possible, for example, even if the dimension of the outer diameter of the electromagnetic relay 100 is limited due to the reduction in size, desired isolation distances between the fixed terminals 21 . 22 . 23 and the mobile connections 24 . 25 . 26 sure.

Furthermore, by the rotation of the rotary block 41 the moving contacts 76 the movable connections 24 . 25 . 26 by means of the transmission lever 42 and the card 43 moved in the same direction. This can be a contacting and separation between the plurality of stationary contacts 64 and moving contacts 76 facilitate. Furthermore, a degree of movement of the card 43 be adjusted by the positions of the rotary shaft 152 of the lower part 10 and the rotary shaft section 444 of the support plate section 44 be set, the rotary shaft 152 the axis of rotation of the transmission lever 42 is. This allows, for example, a reduction in the power consumption of the electromagnetic relay 100 ,

Furthermore, the drive unit 40 disposed between the adjacent contact mechanisms CM2, CM3. Therefore, the transmission lever 42 with the map 43 connected to their inner position, thereby allowing a distribution of the load on the card 43 at the time of movement of the moving contact 76 is exercised. Consequently, there is no need to use the card 43 amplify, thereby reducing the manufacturing cost of the electromagnetic relay 100 is possible.

Further, the electromagnetic device is 30 arranged such that the contact mechanisms CM1 to CM3 are adjacent to each other, and also arranged such that the central axis of the coil 32 parallel to the contacting / disconnecting direction of the movable contact 76 with the / from the fixed contact 64 is. Therefore, it is possible to spare an unused space in the electromagnetic relay 100 reduce and reduce the size of the electromagnetic relay 100 to facilitate.

Other embodiments

The contact mechanism section 20 is formed of three contact mechanisms CM1 to CM3, but this is not restrictive. The contact mechanism portion may be formed of only a plurality of contact mechanisms.

Note that it is the electromagnetic relay 100 With the above configuration, it is possible to remove any one of the contact mechanisms CM1 to CM3 and to use the remaining as a bipolar electromagnetic relay. Therefore, it can be used as an electromagnetic relay for either three phases or a single phase.

The contact mechanisms CM1 to CM3 are each with two stationary contacts 64 and two moving contacts 76 , which have circular contact surfaces with different diameters formed, but this is not limiting. It may simply be provided at least one stationary contact and at least one movable contact with freely selected shapes and dimensions.

The stationary connection section 62 and the movable terminal section 74 are formed in the substantially L-shape, each by the wide sections 62 . 74 be bent, but this is not limiting. The stationary connection section 62 and the movable terminal section 74 can be easily provided in freely selected shapes and dimensions according to the design and other of the electromagnetic relay. For example, the wide portion may have a shape that is formed without being bent (that is, a straight shape), or the wide portion may not be provided.

The electromagnetic device 30 is with respect to the contact mechanisms CM1 to CM3 in the direction orthogonal to the contacting / disconnecting direction of the movable contact 76 with the / from the fixed contact 64 arranged, but this is not limiting. The electromagnetic device may be arranged in a freely selected manner as long as it is arranged in a direction crossing the contacting / disconnecting direction of the movable contact with / from the stationary contact.

Further, the electromagnetic device is 30 arranged such that the central axis of the coil 32 parallel to the contacting / disconnecting direction of the movable contact 76 with the / from the fixed contact 64 is, but this is not limiting. If possible, for example, the electromagnetic device may be arranged such that the central axis of the coil is orthogonal to the contacting / disconnecting direction of the movable contact with the stationary contact.

The sink 32 the electromagnetic device 30 may, if possible, be either a single turn coil or a two turn coil.

The drive unit 40 is arranged between the contact mechanisms CM2, CM3, but this is not limiting. The drive unit can be arranged between the adjacent contact mechanisms and can be arranged, for example, between the contact mechanisms CM1, CM2.

Note that the drive unit 40 is not limited to the above embodiment, but any drive unit can be used in a freely chosen manner, provided that it has a configuration in which the stationary contact and the movable contact by rotation of the rotary block are brought into contact with each other or separated can be. For example, the transmission lever may be omitted and the drive arm portion of the rotary block may be directly connected to the card if possible.

The shapes, sizes and the like of the contact mechanisms CM1 to CM3, the electromagnetic device 30 and the drive unit 40 may be appropriately changed depending on the design of the electromagnetic relay and the like.

Of course, the ingredients described in the above embodiments may be suitably combined, or may be appropriately selected, substituted or deleted.

INDUSTRIAL APPLICABILITY

The electromagnetic relay of the present invention can be used, for example, for a smart meter.

LIST OF REFERENCE NUMBERS

10

lower part

11

first receiving section

12

second receiving section

13

third receiving section

111, 121, 131

terminal groove

112, 122, 132

port bracket

113, 123, 133

terminal groove

114, 124, 134

terminal holder

14

fourth recording section

141

head Start

142

groove section

15

fifth recording section

151

pivot bearing

152

rotary shaft

153

recessed section

16, 17

Passage section

18

Through Hole

20

Contact mechanism section

21, 22, 23

fixed connection

24, 25, 26

mobile connection

30

electromagnetic device

31

bobbins

311, 312

guide section

313

Through Hole

314

outwardly projecting section

315

engaging groove

32

Kitchen sink

33

iron core

331

projecting section

34, 35

yoke

341, 351

first planar section

342, 352

second planar section

343, 353

Einpassrille

344, 354

alignment projection

36, 37, 38

coil terminal

40

drive unit

41

rotating block

411

body

412

413 moving iron part

414

permanent magnet

415

drive arm

416

rotary shaft

42

transmission lever

421

transmission section

422

connecting bearing

423

Through Hole

43

map

431, 432, 433

insertion groove

434

transmission bearings

435

projecting part

44

Support plate portion

441

body

442

arm

443

Through Hole

444

rotary shaft

445

head Start

50

cover

51

Through Hole

52

opening

53

groove section

61

first broad section

62

second wide section, fixed connection section

63

narrow section

64

permanent contact

71

body

72

movable contact part

73

first broad section

74

second wide section, movable connection section

75

narrow section

76

moving contact

77

curved section

78, 79

claw portion

81, 82

room

100

electromagnetic relay

Claims (6)

Electromagnetic relay, comprising: an electromagnetic device having at least one coil; a plurality of contact mechanisms, each of the contact mechanisms having a stationary contact and a movable contact arranged to face the stationary contact and to be brought into contact therewith and separated therefrom, the contact mechanisms being parallel along a contacting - / separation direction are arranged, in which the movable contact comes into contact with the stationary contact or is separated from it; and a drive unit having a rotation block that rotates in a different direction depending on a direction of a current supplied to the coil and configured to bring the movable contact of each of the plurality of contact mechanisms into contact with the stationary contact or the to separate movable contact from the stationary contact, by rotation of the rotary block, wherein the electromagnetic device is disposed with respect to the contact mechanisms in a direction crossing the contacting / disconnecting direction. The electromagnetic relay according to claim 1, wherein the drive unit comprises a movable member configured to move the movable contact of each of the plurality of contact mechanisms in the same direction, and a transmission member configured to transmit rotation of the rotary block to the movable member by rotation in a direction different from a rotational direction of the rotary block when the rotary block rotates. The electromagnetic relay according to claim 2, wherein the drive unit is disposed between the contact mechanisms which are adjacent to each other. An electromagnetic relay according to claim 2 or 3, further comprising a lower part adapted to receive the electromagnetic device, the plurality of contact mechanisms and the drive unit, wherein the lower part has a first rotary support adapted to rotatably support the rotary block, and a second rotary support adapted to rotatably support the transmission element. An electromagnetic relay according to claim 4, wherein the first and second rotational supports are disposed between the electromagnetic device and the movable member along a parallel direction of the plurality of contact mechanisms, and the second rotary support is disposed between the first rotary support and the movable member. The electromagnetic relay according to any one of claims 1 to 5, wherein the electromagnetic device is disposed so as to be adjacent to the contact mechanisms, and also arranged such that a center axis of the coil is parallel to the contacting / disconnecting direction.

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