JP2016194984A - Electromagnetic relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic reay suitable for compaction.SOLUTION: An electromagnetic reay 100 includes: an electromagnet device 30 having a coil 32; a plurality of contact mechanisms having a fixed contact 64, and a movable contact 76 arranged oppositely to the fixed contact 64 so as to be able to come into contact therewith and to separate therefrom, respectively, the movable contact 76 being arranged in parallel in the direction coming into contact with the fixed contact 64 and to separate therefrom; and a drive section 40 having a rotary block 41 rotating in the different direction depending on the direction of a current supplied to the coil 32, and bringing the movable contacts 76 of the plurality of contact mechanisms into contact with the fixed contact 64 or separating therefrom by rotation of the rotary block 41. The electromagnet device 30 is disposed in a direction crossing the directions approaching/separating to/from the movable contacts 76 with the fixed contact 64, for the contact mechanisms.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an electromagnetic relay.

  Conventionally, as an electromagnetic relay, there exist some which were indicated in patent documents 1, for example. This conventional electromagnetic relay includes an electromagnet whose polarity is reversed depending on the direction of current flow, and a plurality of pairs of fixed terminals and movable terminals. Among the plurality of pairs of fixed terminals and movable terminals, each of the fixed terminals is provided with a fixed contact, and each of the movable terminals is provided with a movable contact piece having a movable contact disposed opposite to the fixed contact. ing. And the movable contact piece of each movable terminal is mutually connected by the card | curd which can move according to the polarity of an electromagnet, and a some movable contact can contact or open | release simultaneously.

China Utility Model Registration Notice CN2014435354Y

  However, in the conventional electromagnetic relay, a plurality of pairs of fixed terminals and movable terminals and an electromagnet are arranged in parallel. For this reason, when the outer diameter of the electromagnetic relay is limited due to the miniaturization, a desired insulation distance may not be ensured between the fixed terminal and the movable terminal.

  In view of the above-described problems, an object of the present invention is to provide an electromagnetic relay suitable for downsizing.

  In order to solve the above problems, the electromagnetic relay of the present invention includes an electromagnet device having at least one coil, a fixed contact, and a movable contact disposed so as to face or be separated from the fixed contact, A plurality of contact mechanisms arranged in parallel along a contact / separation direction in which the movable contact contacts or separates from the fixed contact, and a rotation block that rotates in different directions depending on the direction of current supplied to the coil And a drive unit that contacts or separates the movable contacts of the plurality of contact mechanisms by the rotation of the rotation block. The electromagnet device is disposed in a direction intersecting the contact / separation direction with respect to the contact mechanism.

  According to the electromagnetic relay of the present invention, the electromagnet device is arranged in a direction intersecting with the contact / separation direction in which the movable contact contacts or opens the fixed contact. For this reason, the space | interval of a fixed terminal and a movable terminal can be enlarged compared with the electromagnetic relay arrange | positioned in the contact / separation direction of the movable contact with respect to a fixed contact. As a result, for example, even when the outer diameter of the electromagnetic relay is limited due to downsizing, a desired insulation distance can be secured between the fixed terminal and the movable terminal.

  As an embodiment of the present invention, when the driving unit moves the movable member of the plurality of contact mechanisms in the same direction and the rotating block rotates, the rotating block rotates. It is good also as a structure which has a transmission member which transmits rotation of the said rotation block to the said movable member by rotating in the direction different from a direction.

  According to this embodiment, the movable contacts of the plurality of contact mechanisms are moved in the same direction via the transmission member and the movable member by the rotation of the rotation block. For this reason, a plurality of fixed contacts and movable contacts can be easily contacted or separated. Further, the amount of movement of the movable member can be adjusted by adjusting the position of the rotation shaft of the transmission member. Thereby, for example, the power consumption of the electromagnetic relay can be reduced.

  As one Embodiment of this invention, it is good also as a structure by which the said drive part is arrange | positioned between the said adjacent contact mechanisms.

  According to this embodiment, since the transmission member is coupled at a position inside the movable member, the stress applied to the movable member can be dispersed when the movable contact is moved. For this reason, it is not necessary to reinforce the movable member, and the manufacturing cost of the electromagnetic relay can be reduced.

  As an embodiment of the present invention, the electromagnet device, a plurality of the contact mechanisms, and a base that houses the driving unit are further provided, and the base supports the rotating block in a rotatable manner. It is good also as a structure which has a movement support part and the 2nd rotation support part which supports the said transmission member so that rotation is possible.

  According to this embodiment, the base further includes a first rotation support portion that rotatably supports the rotation block, and a second rotation support portion that rotatably supports the transmission member. ing. Thereby, a rotation block and a transmission member can be positioned with high precision.

  As one embodiment of the present invention, the first and second rotation support portions are provided along the parallel direction of the plurality of contact mechanisms between the electromagnet device and the movable member, and the second It is good also as a structure by which the rotation support part is arrange | positioned between the said 1st rotation support part and the said movable member.

  According to this embodiment, a 2nd rotation support part can be arrange | positioned in the arbitrary positions between a 1st rotation support part and a movable member. For this reason, the freedom degree of design of an electromagnetic relay can be expanded.

  As an embodiment of the present invention, the electromagnet device is disposed adjacent to the contact mechanism, and the axial center of the coil and the direction in which the fixed contact and the movable contact are in contact with or separated from each other include: It is good also as a structure arrange | positioned so that it may become parallel.

  According to this embodiment, since the dead space in the electromagnetic relay can be reduced, the electromagnetic relay can be easily downsized.

It is a perspective view which shows the electromagnetic relay of one Embodiment of this invention. It is a perspective view which shows the state which removed the cover of the electromagnetic relay of FIG. It is a disassembled perspective view of the electromagnetic relay of FIG. It is the disassembled perspective view seen from the direction different from FIG. 3 of the electromagnetic relay of FIG. It is a perspective view of the base of the electromagnetic relay of FIG. It is a disassembled perspective view of the electromagnet apparatus of the electromagnetic relay of FIG. It is a disassembled perspective view of the rotation block of the electromagnetic relay of FIG. It is a top view which shows the OFF state of the electromagnetic relay of FIG. It is a top view which shows the ON state of the electromagnetic relay of FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In the following explanation, in describing the configuration shown in the drawings, terms indicating directions such as “up”, “down”, “left”, “right”, and other terms including them are used. However, the purpose of using these terms is to facilitate understanding of the embodiments through the drawings. Therefore, these terms do not necessarily indicate the direction in which the embodiments of the present invention are actually used, and the technical scope of the invention described in the claims is limitedly interpreted by these terms. Should not be done.

  As shown in FIGS. 1 to 4, the electromagnetic relay 100 according to an embodiment of the present invention covers the base 10, the contact mechanism unit 20, the electromagnet device 30, the driving unit 40, and the base 10 housed in the base 10. And a cover 50. 3 and 4, the cover 50 is omitted for convenience of explanation.

  As shown in FIGS. 3 and 4, the base 10 has a box shape that is rectangular when viewed from above, with one surface opened. As shown in FIG. 5, the base 10 has first to third storage portions 11, 12, and 13 for storing the contact mechanism portion 20, and a fourth storage portion 14 for storing the electromagnet device 30. A fifth housing 15 for housing the drive unit 40 and a through hole 18 for fixing the electromagnetic relay 100 to a substrate (not shown) or the like are provided.

  As shown in FIG. 5, the first to third storage portions 11, 12, and 13 are arranged at intervals along the side surface of the base 10 on the lower side in the Y direction. Terminal grooves 111, 121, 131 and terminal holding portions 112, 122, 132 for assembling the fixed terminals 21, 22, 23, and movable terminals 24, Terminal grooves 113, 123, 133 for assembling 25, 26 and terminal holding portions 114, 124, 134 are provided. The terminal grooves 111, 113, 121, 123, 131, 133 are provided so as to penetrate the lower side surface of the base 10 in the Y direction.

  Further, the first and second storage portions 11 and 12 are provided with a passage portion 16 that communicates with the first and second storage portions 11 and 12 along the lower side surface of the base 10 in the Y direction. The second and third storage portions 12 and 13 are provided with a passage portion 17 communicating with the second and third storage portions 12 and 13 along the lower side surface of the base 10 in the Y direction. The passage portions 16 and 17 are arranged in a line.

  As shown in FIG. 5, the fourth storage portion 14 is disposed along the side surface of the base 10 on the upper side in the Y direction, and has a protrusion 141 and a groove 142 provided on the bottom surface of the base 10. The protrusions 141 are arranged at both ends in the X direction of the fourth storage part 14, and the groove part 142 is arranged at a lower end in the Y direction of the fourth storage part 14.

  As shown in FIG. 5, the fifth storage portion 15 is disposed so as to communicate with the fourth storage portion 14 and the passage portion 17, and includes a rotation receiving portion 151 as an example of the first rotation support portion and the second rotation. And a rotation shaft portion 152 as an example of a moving support portion. The rotation receiving portion 151 and the rotation shaft portion 152 are provided on the bottom surface of the base 10 with an interval along the Y direction. The rotation receiving portion 151 has a concave shape having a circular opening and is disposed between the groove portions 142 of the fourth storage portion 14. The rotation shaft portion 152 has a substantially cylindrical shape, and is disposed between the rotation receiving portion 151 and the passage portion 17.

  The fifth storage portion 15 is provided with a recess 153 for attaching a support plate portion 44 described later. The recess 153 has a circular opening and is disposed on the lower side in the Y direction of the groove 142 of the fourth storage portion 14.

  As shown in FIG. 5, the through holes 18 have a circular shape and are respectively disposed at a pair of opposing corners of the base 10.

  As shown in FIG. 2, the contact mechanism unit 20 includes three sets of contact mechanisms CM1 to CM3. 3 and 4, the contact mechanism CM1 includes a pair of fixed terminals 21 and a movable terminal 24, the contact mechanism CM2 includes a pair of fixed terminals 22 and a movable terminal 25, and the contact mechanism CM3 includes a pair of contacts. The fixed terminal 23 and the movable terminal 26.

  Each of the fixed terminals 21, 22, 23 is a rectangular plate-like body, and includes first and second wide portions 61, 62 provided at both ends in the longitudinal direction, a first wide portion 61, and a second wide portion 62. It is comprised with the narrow part 63 to connect.

  Two fixed contacts 64 are provided in the first wide portion 61 of the fixed terminals 21, 22, and 23. The fixed contacts 64 have circular contact surfaces with different diameters, and are fixed by caulking at intervals. Further, the second wide portion 62 of the fixed terminals 21, 22, 23 constitutes the fixed terminal portion 62. That is, the fixed terminal portion 62 that is the second wide portion 62 is formed by bending a part thereof, and has a substantially L-shaped cross-sectional shape. The fixed terminals 21, 22 and 23 are provided with a gap 81 defined by the first and second wide portions 61 and 62 and the narrow portion 63.

  Each of the movable terminals 24, 25, 26 includes a main body 71 and a movable contact piece 72.

  As shown in FIG. 3, the main body 71 is a rectangular plate-like body, and includes first and second wide portions 73 and 74 and first and second wide portions 73 and 74 provided at both ends in the longitudinal direction. It is comprised with the narrow part 75 connected. The first wide portion 73 of the main body 71 is bent in a crank shape, and one end of the movable contact piece 72 is caulked and fixed to one end in the longitudinal direction. Further, the second wide portion 74 of the main body portion 71 constitutes a movable terminal portion 74. That is, the movable terminal portion 74 that is the second wide portion 74 is formed by bending a part thereof, similarly to the fixed terminal portion 62, and has a substantially L-shaped cross-sectional shape. The main body 71 is provided with a gap 82 defined by the first and second wide portions 73 and 74 and the narrow portion 75.

  As shown in FIG. 4, the movable contact piece 72 is formed by stacking four rectangular conductive thin plate springs, and has two movable contacts 76 corresponding to the fixed contacts 64. One end in the longitudinal direction of the movable contact piece 72 is caulked and fixed to the main body 71 to form a fixed end. The other end in the longitudinal direction of the movable contact piece 72 forms a free end, and two movable contacts 76 are fixed to the free end side by caulking at intervals. Further, the movable contact piece 72 is provided with a slit that extends along the longitudinal direction of the movable contact piece 72 through the center of the movable contact 76. By providing this slit, the two movable contacts 76 can move independently.

  A curved portion 77 is provided on the fixed end side of the movable contact piece 72. In addition to the slit between the movable contacts 76, the curved portion 77 is provided with two slits parallel to the slit, and is divided into four substantially equally in the width direction of the movable contact piece 72. By providing the curved portion 77, the expansion and contraction of the movable contact piece 72 is absorbed and relaxed, and smooth operating characteristics are ensured.

  The free end of the movable contact piece 72 is provided with two sets of claw portions 78 and 79 extending in a direction orthogonal to the surface to which the movable contact 76 is fixed, and one set with a slit between the movable contacts 76 interposed therebetween. They are arranged symmetrically. The claw portions 78 and 79 are arranged such that the claw portion 78 close to the slit is farther from the movable contact 76 than the claw portion 79 far from the slit.

  As shown in FIG. 6, the electromagnet device 30 includes a spool 31, a coil 32, an iron core 33, yokes 34 and 35, and three coil terminals 36, 37, and 38.

  The spool 31 has a body part (not shown) around which the coil 32 is wound, and flange parts 311 and 312 provided at both ends of the body part. The body portion is provided with through holes 313 that open the flange portions 311 and 312 respectively. Further, as shown in FIG. 2, the flange portion 312 is provided with an overhang portion 314 having three terminal holes (not shown). The overhanging portion 314 is provided with an engaging groove 315 that engages with the upper end of the side surface of the base 10.

  For example, the coil 32 includes a set coil and a reset coil. The set coil and the reset coil are wound so that magnetic fields in opposite directions are generated by supplying a current. That is, the directions of the current supplied to the set coil and the current supplied to the reset coil are different.

  The iron core 33 has a rectangular plate shape and is made of a magnetic material. The iron core 33 has protrusions 331 for caulking and fixing the yokes 34 and 35 at both ends thereof, and is inserted into the through hole 313 of the spool 31.

  The yokes 34 and 35 have a substantially L-shaped plate shape and are made of a magnetic material. The yokes 34 and 35 have first flat surface portions 341 and 351 that contact the flange portions 311 and 312 of the spool 31, and second flat surface portions 342 and 352 that extend along the body portion of the spool 31. The first flat portions 341 and 351 are provided with fitting grooves 343 and 353 into which the protruding portions 331 of the iron core 33 are fitted, and the second flat portions 342 and 352 are fitted with the groove portions 142 of the base 10. Positioning protrusions 344 and 354 are provided.

  The coil terminals 36, 37, and 38 are press-fitted into the terminal holes of the overhang portions 314 of the spool 31. The coil terminals 36 and 37 are connected to lead wires of the set coil, and the coil terminals 37 and 38 are connected to lead wires of the reset coil.

  As shown in FIGS. 3 and 4, the drive unit 40 includes a rotation block 41, a transmission lever 42 as an example of a transmission member, a card 43 as an example of a movable member, and a support plate 44. .

  As shown in FIG. 7, the rotation block 41 includes a main body 411, a pair of plate-shaped movable iron pieces 412 and 413, and a permanent magnet 414. The permanent magnet 414 is a pair of movable iron pieces 412 and 413. It is formed by insert molding in a sandwiched state. The main body 411 is provided with a driving arm 415 connected to the transmission lever 42 and a pair of rotating shafts 416. As shown in FIG. 3, the driving arm 415 extends in a direction substantially orthogonal to the pair of movable iron pieces 412 and 413, and has a tip surface formed in an arc shape. In addition, the rotation shaft portion 416 has a substantially cylindrical shape that can be inserted into the rotation receiving portion 151 of the base 10 and is disposed on the same axis.

  As shown in FIGS. 3 and 4, the transmission lever 42 has a rectangular plate shape. At one end in the longitudinal direction of the transmission lever 42, a transmission portion 421 having a tip surface formed in an arc shape is provided. A connection receiving portion 422 for connecting to the rotation block 41 is provided at the other end in the longitudinal direction of the transmission lever 42. As shown in FIG. 4, the connection receiving portion 422 has a groove shape with which the tip of the driving arm portion 415 of the rotation block 41 can be engaged. A through hole 423 having a circular opening is provided between the transmission part 421 and the connection receiving part 422. The through-hole 423 is formed so that the diameters of the opening on the upper surface side (shown in FIG. 3) and the opening on the bottom surface side (shown in FIG. 4) are different. The shaft portion 152 has a shape that can be inserted.

  3 and 4, the card 43 has three insertion grooves 431, 432, and 433 into which the movable contact pieces 72 of the movable terminals 24, 25, and 26 are inserted. As shown in FIG. 4, a transmission receiving portion 434 having a concave shape into which the transmission portion 421 of the transmission lever 42 can be inserted is provided between the insertion grooves 432 and 433.

  As shown in FIG. 4, two protrusions 435 protruding from the bottom surface of the base 10 are provided on the bottom surface of the card 43. The protrusion 435 has an arcuate tip surface and is disposed between the insertion grooves 431 and 432 and between the insertion grooves 432 and 433, respectively.

  As shown in FIGS. 3 and 4, the support plate portion 44 has a substantially T-shape when viewed from above, and has a rectangular main body portion 441 and arm portions extending in opposite directions from one end of the main body portion 441. 442.

  A through hole 443 is provided at one end of the main body portion 441, and a rotation shaft portion 444 is provided at the other end. The through hole 443 has a circular opening and has a shape into which the rotation shaft portion 416 of the rotation block 41 can be inserted. The rotating shaft portion 444 has a substantially cylindrical shape that can be inserted into the opening on the upper surface side of the through hole 423 of the transmission lever 42.

  The arm portion 442 has a protrusion 445 for attaching the support plate portion 44 to the base 10 on the tip side. The protrusion 445 has a substantially cylindrical shape that can be fitted into the recess 153 of the base 10.

  As shown in FIG. 1, the cover 50 has a rectangular plate shape that can cover the opening of the base 10. Through holes 51 are provided in a pair of corners on the upper surface of the cover 50. The through hole 51 is disposed so as to form one through hole together with the through hole 18 of the base 10 when the cover 50 is attached to the base 10. Further, the side surface of the cover 50 is provided with an opening 52 for projecting the coil terminal 36 and a groove 53 fitted to the fixed terminals 21, 22, 23 and the movable terminals 24, 25, 26.

  Next, a method for assembling the electromagnetic relay 100 having the above configuration will be described.

  First, the contact mechanism unit 20 and the card 43 are assembled to the base 10.

  The contact mechanism unit 20 is assembled as follows. That is, first, the fixed terminals 21, 22, and 23 are assembled to the first to third storage portions 11, 12, and 13 of the base 10 with the card 43 disposed in the passage portions 16 and 17, and then the base The movable terminals 24, 25, and 26 are assembled to the tenth first to third storage portions 11, 12, and 13, respectively.

  At this time, as shown in FIG. 2, the fixed terminals 21, 22 and 23 and the movable terminals 24, 25 and 26 partially protrude upward from the opening of the base 10, and the fixed contact 64 and the movable contact 76 are Oppositely arranged so as to be contactable or disengageable in the X direction. That is, the contact mechanisms CM1 to CM3 are arranged in parallel along the X direction, and the fixed contact 64 and the movable contact 76 contact or separate along the X direction.

  The fixed terminals 21, 22, 23 and the movable terminals 24, 25, 26 are positioned so that the gaps 81, 82 and the passage portions 16, 17 are aligned and arranged in a line. Thus, the card 43 can be slid along the passage portions 16 and 17.

  Further, the card 43 is disposed such that the protrusion 435 is in contact with the bottom surface of the base 10 and the transmission receiving portion 434 is positioned between the fixed terminal 23 and the movable terminal 25. Thus, since the arc surface of the protrusion 435 and the bottom surface of the base 10 are in contact with each other, it is possible to reduce the resistance accompanying the sliding movement of the card 43. Further, the free end of the movable contact piece 72 is inserted into the insertion grooves 431, 432, and 433 of the card 43, and is sandwiched between the claw portions 78 and 79 to be prevented from coming off. Thus, since the card | curd 43 is pinched | interposed by the nail | claw parts 78 and 79 of the movable contact piece 72, all the movable contacts 76 of the movable terminals 24, 25, and 26 can be reliably moved to the same direction.

  The fixed terminal 21 is positioned by press-fitting the narrow part 63 into the terminal groove 111 of the first storage part 11 and press-fitting the end part on the first wide part 61 side into the terminal holding part 112. Similarly, the fixed terminal 22 is positioned by press-fitting the narrow portion 63 into the terminal groove 121 of the second storage portion 12 and press-fitting the end portion on the first wide portion 61 side into the terminal holding portion 122. Further, the fixed terminal 23 is positioned by press-fitting the narrow portion 63 into the terminal groove 131 of the third storage portion 12 and press-fitting the end portion on the first wide portion 61 side into the terminal holding portion 132.

  The movable terminal 24 is positioned by press-fitting the narrow portion 75 into the terminal groove 113 of the first storage portion 11 and press-fitting the fixed end of the first wide portion 73 into the terminal holding portion 114. Similarly, the movable terminal 25 is positioned by press-fitting the narrow portion 75 into the terminal groove 123 of the second storage portion 12 and press-fitting the fixed end of the first wide portion 73 into the terminal holding portion 124. The movable terminal 26 is positioned by press-fitting the narrow portion 75 into the terminal groove 133 of the third storage portion 12 and press-fitting the fixed end of the first wide portion 73 into the terminal holding portion 132.

  Next, the electromagnet device 30 is assembled to the base 10. At this time, the electromagnet device 30 is positioned by fitting the positioning protrusions 344 and 354 of the yokes 34 and 35 into the groove 142 of the fourth storage part 14 of the base 10, and the protrusions 141 of the fourth storage part 14 are positioned. Assembled in between. That is, the electromagnet device 30 is disposed at a position orthogonal to the contact / separation direction in which the movable contact 76 contacts or separates from the fixed contact 64 and is adjacent to the contact mechanisms CM1 to CM3, and the axis of the coil 32 The movable contact 76 is arranged so as to be parallel to the contact / separation direction of the fixed contact 64. When the electromagnet device 30 is assembled to the base 10, as shown in FIG. 2, the engaging groove 315 of the overhanging portion 314 of the spool 31 engages with the upper end of the side surface of the base 10, and the coil terminal 36 is outside the base 10. Exposed.

  Note that either the contact mechanism unit 20 or the electromagnet device 30 may be assembled first.

  Subsequently, the drive unit 40 excluding the card 43 is assembled to the base 10.

  First, the rotation block 41 is assembled to the fifth storage portion 15 of the base 10. At this time, the rotation block 41 is positioned by inserting one rotation shaft portion 416 into the rotation receiving portion 151 of the fifth storage portion 15.

  Next, the transmission lever 42 is assembled to the fifth storage portion 15 of the base 10. At this time, the transmission portion 421 of the transmission lever 42 is inserted into the transmission receiving portion 434 of the card 43, and the connection receiving portion 422 of the transmission lever 42 is engaged with the driving arm portion 415 of the rotating block 41 and the transmission lever 42. The through hole 423 is inserted into the rotation shaft portion 152 of the base 10. Thereby, the transmission lever 42 is positioned.

  The rotation receiving portion 151 and the rotation shaft portion 152 are provided between the electromagnet device 30 and the card 43 along the parallel direction of the contact mechanisms CM1 to CM3 (that is, the Y direction). 152 is disposed between the rotation receiving portion 151 and the card 43.

  Subsequently, the support plate portion 44 is assembled to the fifth storage portion 15 of the base 10. At this time, the other rotation shaft portion 416 of the rotation block 41 is inserted into the through hole 443 of the support plate portion 44, and the rotation shaft portion 444 of the support plate portion 44 is inserted into the through hole 423 of the transmission lever 42. Then, the protrusion 445 of the support plate 44 is fitted into the recess 153 of the base 10.

  That is, the rotation block 41 is rotatably supported by the rotation receiving portion 151 of the base 10 and the through hole 443 of the support plate portion 44, and the axis of the rotation shaft portion 416 of the rotation block 41 is A rotation axis of the rotation block 41 is configured. The transmission lever 42 is rotatably supported by the rotation shaft portion 152 of the base 10 and the rotation shaft portion 444 of the support plate portion 44, and the axis of the rotation shaft portion 152 of the base is the transmission lever. 42 rotational axes are formed.

  Finally, the cover 50 is attached to the base 10 and the assembly of the electromagnetic relay 100 is completed.

  Next, the operation of the electromagnetic relay 100 having the above configuration will be described with reference to FIGS.

  FIG. 8 shows the electromagnetic relay 100 in the off state. In the electromagnetic relay 100 in the off state, one end of the movable iron piece 412 is attracted to the yoke 35 and one end of the movable iron piece 413 is attracted to the yoke 34 by the permanent magnet 414 of the rotating block 41.

  At this time, the driving arm portion 415 of the rotation block 41 is on the left side in the X direction with respect to a straight line L1 connecting the center of the rotation shaft portion 416 of the rotation block 41 and the center of the rotation shaft portion 152 of the base 10. Is located. Accordingly, the transmission lever 42 is held so that the transmission unit 421 is positioned on the right side in the X direction with respect to the straight line L <b> 1, and all the movable contacts 76 are separated from the fixed contacts 64 via the card 43.

  When a current is supplied to the set coil of the coil 32 of the electromagnetic relay 100 in the off state shown in FIG. 8 and the set coil is excited, the magnetic force of the permanent magnet 414 of the rotating block 41 is canceled, and the other end of the movable iron piece 412 Is attracted to the yoke 34, and the other end of the movable iron piece 413 is attracted to the yoke 35. As a result, the rotation block 41 rotates counterclockwise, and the driving arm 415 moves to the right in the X direction with respect to the straight line L1.

  The movement of the driving arm 415 causes the transmission lever 42 to rotate clockwise, that is, in a direction different from the rotation direction of the rotation block 41. The rotation of the transmission lever 42 causes the card 43 to slide to the left in the X direction, bringing all the movable contacts 76 into contact with the fixed contacts 64. Thereby, the electromagnetic relay is switched from the off state to the on state shown in FIG. Thereafter, even if the supply of current to the set coil is stopped, the ON state of the electromagnetic relay 100 is maintained.

  When a current is supplied to the reset coil of the coil 32 of the electromagnetic relay 100 in the ON state shown in FIG. 9 and the reset coil is excited, the magnetic force of the permanent magnet 414 of the rotating block 41 is canceled, and one end of the movable iron piece 412 is The yoke 35 is sucked and one end of the movable iron piece 413 is sucked by the yoke 34. As a result, the rotation block 41 rotates clockwise, and the driving arm 415 is moved to the left in the X direction with respect to the straight line L1.

  Due to the movement of the driving arm 415, the transmission lever 42 rotates counterclockwise. By the rotation of the transmission lever 42, the card 43 slides to the right in the X direction, and all the movable contacts 76 are separated from the fixed contacts 64. Thereby, the electromagnetic relay is switched from the on state to the off state shown in FIG. Thereafter, even if the supply of current to the set coil is stopped, the OFF state of the electromagnetic relay 100 is maintained.

  In the electromagnetic relay 100 having the above-described configuration, the electromagnet device 30 is disposed in a direction orthogonal to the contact / separation direction in which the movable contact 76 contacts or separates from the fixed contact 64. For this reason, the distance between the fixed terminals 21, 22, 23 and the movable terminals 24, 25, 26 is increased as compared with the electromagnetic relay in which the electromagnet device is arranged in the contact / separation direction of the movable contact 76 with respect to the fixed contact 64. I can. As a result, for example, even if the outer diameter of the electromagnetic relay 100 is limited due to miniaturization, a desired insulation distance is secured between the fixed terminals 21, 22, 23 and the movable terminals 24, 25, 26. it can.

  Further, the movable contact 76 of the movable terminals 24, 25, 26 is moved in the same direction via the transmission lever 42 and the card 43 by the rotation of the rotation block 41. For this reason, the plurality of fixed contacts 64 and the movable contact 76 can be easily contacted or separated. Further, the movement amount of the card 43 can be adjusted by adjusting the positions of the rotation shaft portion 152 of the base 10 that is the rotation shaft of the transmission lever 42 and the rotation shaft portion 444 of the support plate portion 44. Thereby, for example, the power consumption of the electromagnetic relay 100 can be reduced.

  Further, the drive unit 40 is disposed between the adjacent contact mechanisms CM2 and CM3. For this reason, since the transmission lever 42 is connected at a position inside the card 43, the stress applied to the card 43 can be dispersed when the movable contact 76 is moved. As a result, there is no need to reinforce the card 43, and the manufacturing cost of the electromagnetic relay 100 can be reduced.

  Further, the electromagnet device 30 is disposed adjacent to the contact mechanisms CM1 to CM3, and is disposed so that the axis of the coil 32 and the contact / separation direction of the movable contact 76 with respect to the fixed contact 64 are parallel to each other. Yes. For this reason, the dead space in the electromagnetic relay 100 can be reduced, and the electromagnetic relay 100 can be reduced in size easily.

(Other embodiments)
The contact mechanism unit 20 includes three sets of contact mechanisms CM1 to CM3, but is not limited thereto. The contact mechanism part only needs to be composed of a plurality of contact mechanisms.

  Note that the electromagnetic relay 100 having the above-described configuration can be used as a two-pole electromagnetic relay by removing any of the contact mechanisms CM1 to CM3. Thereby, it can be used as an electromagnetic relay for either three-phase or single-phase.

  In the contact mechanisms CM1 to CM3, two fixed contacts 64 and two movable contacts 76 each having a circular contact surface with different diameters are provided, but the present invention is not limited to this. At least one of the fixed contact and the movable contact may be provided in any shape and size.

  The fixed terminal portion 62 and the movable terminal portion 74 are formed in a substantially L shape by bending the wide portions 62 and 74, respectively, but are not limited thereto. The fixed terminal portion 62 and the movable terminal portion 74 may be provided in any shape and size according to the design of the electromagnetic relay, for example, a shape that does not bend the wide portion (so-called straight shape) Alternatively, the wide portion may not be provided.

  The electromagnet device 30 is disposed in a direction orthogonal to the contact / separation direction of the movable contact 76 with respect to the fixed contact 64 with respect to the contact mechanisms CM1 to CM3, but is not limited thereto. The electromagnet device can be arbitrarily arranged as long as the direction intersects the direction of contact of the movable contact with the fixed contact.

  Further, although the electromagnet device 30 is arranged so that the axis of the coil 32 and the contact / separation direction of the movable contact 76 with respect to the fixed contact 64 are parallel to each other, the present invention is not limited thereto. If possible, for example, the electromagnet device may be arranged such that the axis of the coil is orthogonal to the contact / separation direction of the movable contact with respect to the fixed contact.

  The coil 32 of the electromagnet device 30 may be a one-turn coil or a two-turn coil, if possible.

  The drive unit 40 is disposed between the contact mechanisms CM2 and CM3, but is not limited thereto. The drive part should just be arrange | positioned between adjacent contact mechanisms, for example, may be arrange | positioned between contact mechanism CM1, CM2.

  The drive unit 40 is not limited to the above-described embodiment, and may be arbitrarily adopted as long as the drive unit 40 has a configuration capable of bringing the fixed contact and the movable contact into contact with each other or opening them by turning the turning block. For example, if possible, the transmission lever may be omitted and the driving arm of the rotating block may be directly connected to the card.

  The shapes and sizes of the contact mechanisms CM <b> 1 to CM <b> 3, the electromagnet device 30, and the drive unit 40 can be changed as appropriate according to the design of the electromagnetic relay.

  It goes without saying that the constituent elements described in the above embodiments may be combined as appropriate, and may be selected, replaced, or deleted as appropriate.

  The electromagnetic relay of this invention can be utilized for a smart meter, for example.

10 Base 11 First storage portion 12 Second storage portion 13 Third storage portion 111, 121, 131 Terminal grooves 112, 122, 132 Terminal holding portions 113, 123, 133 Terminal grooves 114, 124, 134 Terminal holding portion 14 Fourth Storage part 141 Protrusion 142 Groove part 15 Fifth storage part 151 Rotation receiving part 152 Rotation shaft part 153 Recess 16, 17 Passage part 18 Through hole 20 Contact mechanism part 21, 22, 23 Fixed terminal 24, 25, 26 Movable terminal 30 Electromagnet device 31 Spool 311, 312 鍔 part 313 Through hole 314 Overhang part 315 Engaging groove 32 Coil 33 Iron core 331 Protruding part 34, 35 Yoke 341, 351 First flat part 342, 352 Second flat part 343, 353 Fitting Grooves 344, 354 Positioning projections 36, 37, 38 Coil terminal 40 Drive unit 41 Rotating block 411 Body portion 412 13 Movable iron piece 414 Permanent magnet 415 Driving arm 416 Rotating shaft 42 Transmission lever 421 Transmission unit 422 Connection receiving unit 423 Through hole 43 Card 431, 432, 433 Insertion groove 434 Transmission receiving unit 435 Projection 44 Support plate 441 Body portion 442 Arm portion 443 Through hole 444 Rotating shaft portion 445 Projection 50 Cover 51 Through hole 52 Opening 53 Groove portion 61 First wide portion 62 Second wide portion, fixed terminal portion 63 Narrow portion 64 Fixed contact point 71 Main body portion 72 Movable Contact piece 73 1st wide part 74 2nd wide part, movable terminal part 75 narrow part 76 movable contact 77 bending part 78, 79 claw part 81, 82 clearance 100 electromagnetic relay

  The present invention relates to an electromagnetic relay.

  Conventionally, as an electromagnetic relay, there exist some which were indicated in patent documents 1, for example. This conventional electromagnetic relay includes an electromagnet whose polarity is reversed depending on the direction of current flow, and a plurality of pairs of fixed terminals and movable terminals. Among the plurality of pairs of fixed terminals and movable terminals, each of the fixed terminals is provided with a fixed contact, and each of the movable terminals is provided with a movable contact piece having a movable contact disposed opposite to the fixed contact. ing. And the movable contact piece of each movable terminal is mutually connected by the card | curd which can move according to the polarity of an electromagnet, and a some movable contact can contact or open | release simultaneously.

China Utility Model Registration Notice CN2014435354Y

  However, in the conventional electromagnetic relay, a plurality of pairs of fixed terminals and movable terminals and an electromagnet are arranged in parallel. For this reason, when the outer diameter of the electromagnetic relay is limited due to the miniaturization, a desired insulation distance may not be ensured between the fixed terminal and the movable terminal.

  In view of the above-described problems, an object of the present invention is to provide an electromagnetic relay suitable for downsizing.

In order to solve the above-described problems, the electromagnetic relay of the present invention has an electromagnet device having at least one coil, a fixed contact, and a movable contact that is disposed so as to be able to contact and be separated from the fixed contact. A plurality of contact mechanisms arranged in parallel along the contact / separation direction in which the movable contact contacts or separates from the fixed contact, and rotation that rotates in different directions according to the direction of the current supplied to the coil A drive unit that has a block and causes the movable contacts of the plurality of contact mechanisms to contact or separate from the fixed contacts by rotation of the rotation block. The electromagnet device is disposed in a direction intersecting the contact / separation direction with respect to the contact mechanism.

  According to the electromagnetic relay of the present invention, the electromagnet device is arranged in a direction intersecting with the contact / separation direction in which the movable contact contacts or opens the fixed contact. For this reason, the space | interval of a fixed terminal and a movable terminal can be enlarged compared with the electromagnetic relay arrange | positioned in the contact / separation direction of the movable contact with respect to a fixed contact. As a result, for example, even when the outer diameter of the electromagnetic relay is limited due to downsizing, a desired insulation distance can be secured between the fixed terminal and the movable terminal.

  As an embodiment of the present invention, when the driving unit moves the movable member of the plurality of contact mechanisms in the same direction and the rotating block rotates, the rotating block rotates. It is good also as a structure which has a transmission member which transmits rotation of the said rotation block to the said movable member by rotating in the direction different from a direction.

  According to this embodiment, the movable contacts of the plurality of contact mechanisms are moved in the same direction via the transmission member and the movable member by the rotation of the rotation block. For this reason, a plurality of fixed contacts and movable contacts can be easily contacted or separated. Further, the amount of movement of the movable member can be adjusted by adjusting the position of the rotation shaft of the transmission member. Thereby, for example, the power consumption of the electromagnetic relay can be reduced.

  As one Embodiment of this invention, it is good also as a structure by which the said drive part is arrange | positioned between the said adjacent contact mechanisms.

  According to this embodiment, since the transmission member is coupled at a position inside the movable member, the stress applied to the movable member can be dispersed when the movable contact is moved. For this reason, it is not necessary to reinforce the movable member, and the manufacturing cost of the electromagnetic relay can be reduced.

  As an embodiment of the present invention, the electromagnet device, a plurality of the contact mechanisms, and a base that houses the driving unit are further provided, and the base supports the rotating block in a rotatable manner. It is good also as a structure which has a movement support part and the 2nd rotation support part which supports the said transmission member so that rotation is possible.

  According to this embodiment, the base further includes a first rotation support portion that rotatably supports the rotation block, and a second rotation support portion that rotatably supports the transmission member. ing. Thereby, a rotation block and a transmission member can be positioned with high precision.

  As one embodiment of the present invention, the first and second rotation support portions are provided along the parallel direction of the plurality of contact mechanisms between the electromagnet device and the movable member, and the second It is good also as a structure by which the rotation support part is arrange | positioned between the said 1st rotation support part and the said movable member.

  According to this embodiment, a 2nd rotation support part can be arrange | positioned in the arbitrary positions between a 1st rotation support part and a movable member. For this reason, the freedom degree of design of an electromagnetic relay can be expanded.

  As an embodiment of the present invention, the electromagnet device is disposed adjacent to the contact mechanism, and the axial center of the coil and the direction in which the fixed contact and the movable contact are in contact with or separated from each other include: It is good also as a structure arrange | positioned so that it may become parallel.

  According to this embodiment, since the dead space in the electromagnetic relay can be reduced, the electromagnetic relay can be easily downsized.

It is a perspective view which shows the electromagnetic relay of one Embodiment of this invention. It is a perspective view which shows the state which removed the cover of the electromagnetic relay of FIG. It is a disassembled perspective view of the electromagnetic relay of FIG. It is the disassembled perspective view seen from the direction different from FIG. 3 of the electromagnetic relay of FIG. It is a perspective view of the base of the electromagnetic relay of FIG. It is a disassembled perspective view of the electromagnet apparatus of the electromagnetic relay of FIG. It is a disassembled perspective view of the rotation block of the electromagnetic relay of FIG. It is a top view which shows the OFF state of the electromagnetic relay of FIG. It is a top view which shows the ON state of the electromagnetic relay of FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In the following explanation, in describing the configuration shown in the drawings, terms indicating directions such as “up”, “down”, “left”, “right”, and other terms including them are used. However, the purpose of using these terms is to facilitate understanding of the embodiments through the drawings. Therefore, these terms do not necessarily indicate the direction in which the embodiments of the present invention are actually used, and the technical scope of the invention described in the claims is limitedly interpreted by these terms. Should not be done.

  As shown in FIGS. 1 to 4, the electromagnetic relay 100 according to an embodiment of the present invention covers the base 10, the contact mechanism unit 20, the electromagnet device 30, the driving unit 40, and the base 10 housed in the base 10. And a cover 50. 3 and 4, the cover 50 is omitted for convenience of explanation.

  As shown in FIGS. 3 and 4, the base 10 has a box shape that is rectangular when viewed from above, with one surface opened. As shown in FIG. 5, the base 10 has first to third storage portions 11, 12, and 13 for storing the contact mechanism portion 20, and a fourth storage portion 14 for storing the electromagnet device 30. A fifth housing 15 for housing the drive unit 40 and a through hole 18 for fixing the electromagnetic relay 100 to a substrate (not shown) or the like are provided.

  As shown in FIG. 5, the first to third storage portions 11, 12, and 13 are arranged at intervals along the side surface of the base 10 on the lower side in the Y direction. Terminal grooves 111, 121, 131 and terminal holding portions 112, 122, 132 for assembling the fixed terminals 21, 22, 23, and movable terminals 24, Terminal grooves 113, 123, 133 for assembling 25, 26 and terminal holding portions 114, 124, 134 are provided. The terminal grooves 111, 113, 121, 123, 131, 133 are provided so as to penetrate the lower side surface of the base 10 in the Y direction.

  Further, the first and second storage portions 11 and 12 are provided with a passage portion 16 that communicates with the first and second storage portions 11 and 12 along the lower side surface of the base 10 in the Y direction. The second and third storage portions 12 and 13 are provided with a passage portion 17 communicating with the second and third storage portions 12 and 13 along the lower side surface of the base 10 in the Y direction. The passage portions 16 and 17 are arranged in a line.

  As shown in FIG. 5, the fourth storage portion 14 is disposed along the side surface of the base 10 on the upper side in the Y direction, and has a protrusion 141 and a groove 142 provided on the bottom surface of the base 10. The protrusions 141 are arranged at both ends in the X direction of the fourth storage part 14, and the groove part 142 is arranged at a lower end in the Y direction of the fourth storage part 14.

  As shown in FIG. 5, the fifth storage portion 15 is disposed so as to communicate with the fourth storage portion 14 and the passage portion 17, and includes a rotation receiving portion 151 as an example of the first rotation support portion and the second rotation. And a rotation shaft portion 152 as an example of a moving support portion. The rotation receiving portion 151 and the rotation shaft portion 152 are provided on the bottom surface of the base 10 with an interval along the Y direction. The rotation receiving portion 151 has a concave shape having a circular opening and is disposed between the groove portions 142 of the fourth storage portion 14. The rotation shaft portion 152 has a substantially cylindrical shape, and is disposed between the rotation receiving portion 151 and the passage portion 17.

  The fifth storage portion 15 is provided with a recess 153 for attaching a support plate portion 44 described later. The recess 153 has a circular opening and is disposed on the lower side in the Y direction of the groove 142 of the fourth storage portion 14.

  As shown in FIG. 5, the through holes 18 have a circular shape and are respectively disposed at a pair of opposing corners of the base 10.

  As shown in FIG. 2, the contact mechanism unit 20 includes three sets of contact mechanisms CM1 to CM3. 3 and 4, the contact mechanism CM1 includes a pair of fixed terminals 21 and a movable terminal 24, the contact mechanism CM2 includes a pair of fixed terminals 22 and a movable terminal 25, and the contact mechanism CM3 includes a pair of contacts. The fixed terminal 23 and the movable terminal 26.

  Each of the fixed terminals 21, 22, 23 is a rectangular plate-like body, and includes first and second wide portions 61, 62 provided at both ends in the longitudinal direction, a first wide portion 61, and a second wide portion 62. It is comprised with the narrow part 63 to connect.

  Two fixed contacts 64 are provided in the first wide portion 61 of the fixed terminals 21, 22, and 23. The fixed contacts 64 have circular contact surfaces with different diameters, and are fixed by caulking at intervals. Further, the second wide portion 62 of the fixed terminals 21, 22, 23 constitutes the fixed terminal portion 62. That is, the fixed terminal portion 62 that is the second wide portion 62 is formed by bending a part thereof, and has a substantially L-shaped cross-sectional shape. The fixed terminals 21, 22 and 23 are provided with a gap 81 defined by the first and second wide portions 61 and 62 and the narrow portion 63.

  Each of the movable terminals 24, 25, 26 includes a main body 71 and a movable contact piece 72.

  As shown in FIG. 3, the main body 71 is a rectangular plate-like body, and includes first and second wide portions 73 and 74 and first and second wide portions 73 and 74 provided at both ends in the longitudinal direction. It is comprised with the narrow part 75 connected. The first wide portion 73 of the main body 71 is bent in a crank shape, and one end of the movable contact piece 72 is caulked and fixed to one end in the longitudinal direction. Further, the second wide portion 74 of the main body portion 71 constitutes a movable terminal portion 74. That is, the movable terminal portion 74 that is the second wide portion 74 is formed by bending a part thereof, similarly to the fixed terminal portion 62, and has a substantially L-shaped cross-sectional shape. The main body 71 is provided with a gap 82 defined by the first and second wide portions 73 and 74 and the narrow portion 75.

  As shown in FIG. 4, the movable contact piece 72 is formed by stacking four rectangular conductive thin plate springs, and has two movable contacts 76 corresponding to the fixed contacts 64. One end in the longitudinal direction of the movable contact piece 72 is caulked and fixed to the main body 71 to form a fixed end. The other end in the longitudinal direction of the movable contact piece 72 forms a free end, and two movable contacts 76 are fixed to the free end side by caulking at intervals. Further, the movable contact piece 72 is provided with a slit that extends along the longitudinal direction of the movable contact piece 72 through the center of the movable contact 76. By providing this slit, the two movable contacts 76 can move independently.

  A curved portion 77 is provided on the fixed end side of the movable contact piece 72. In addition to the slit between the movable contacts 76, the curved portion 77 is provided with two slits parallel to the slit, and is divided into four substantially equally in the width direction of the movable contact piece 72. By providing the curved portion 77, the expansion and contraction of the movable contact piece 72 is absorbed and relaxed, and smooth operating characteristics are ensured.

  The free end of the movable contact piece 72 is provided with two sets of claw portions 78 and 79 extending in a direction orthogonal to the surface to which the movable contact 76 is fixed, and one set with a slit between the movable contacts 76 interposed therebetween. They are arranged symmetrically. The claw portions 78 and 79 are arranged such that the claw portion 78 close to the slit is farther from the movable contact 76 than the claw portion 79 far from the slit.

  As shown in FIG. 6, the electromagnet device 30 includes a spool 31, a coil 32, an iron core 33, yokes 34 and 35, and three coil terminals 36, 37, and 38.

  The spool 31 has a body part (not shown) around which the coil 32 is wound, and flange parts 311 and 312 provided at both ends of the body part. The body portion is provided with through holes 313 that open the flange portions 311 and 312 respectively. Further, as shown in FIG. 2, the flange portion 312 is provided with an overhang portion 314 having three terminal holes (not shown). The overhanging portion 314 is provided with an engaging groove 315 that engages with the upper end of the side surface of the base 10.

  For example, the coil 32 includes a set coil and a reset coil. The set coil and the reset coil are wound so that magnetic fields in opposite directions are generated by supplying a current. That is, the directions of the current supplied to the set coil and the current supplied to the reset coil are different.

  The iron core 33 has a rectangular plate shape and is made of a magnetic material. The iron core 33 has protrusions 331 for caulking and fixing the yokes 34 and 35 at both ends thereof, and is inserted into the through hole 313 of the spool 31.

  The yokes 34 and 35 have a substantially L-shaped plate shape and are made of a magnetic material. The yokes 34 and 35 have first flat surface portions 341 and 351 that contact the flange portions 311 and 312 of the spool 31, and second flat surface portions 342 and 352 that extend along the body portion of the spool 31. The first flat portions 341 and 351 are provided with fitting grooves 343 and 353 into which the protruding portions 331 of the iron core 33 are fitted, and the second flat portions 342 and 352 are fitted with the groove portions 142 of the base 10. Positioning protrusions 344 and 354 are provided.

  The coil terminals 36, 37, and 38 are press-fitted into the terminal holes of the overhang portions 314 of the spool 31. The coil terminals 36 and 37 are connected to lead wires of the set coil, and the coil terminals 37 and 38 are connected to lead wires of the reset coil.

  As shown in FIGS. 3 and 4, the drive unit 40 includes a rotation block 41, a transmission lever 42 as an example of a transmission member, a card 43 as an example of a movable member, and a support plate 44. .

  As shown in FIG. 7, the rotation block 41 includes a main body 411, a pair of plate-shaped movable iron pieces 412 and 413, and a permanent magnet 414. The permanent magnet 414 is a pair of movable iron pieces 412 and 413. It is formed by insert molding in a sandwiched state. The main body 411 is provided with a driving arm 415 connected to the transmission lever 42 and a pair of rotating shafts 416. As shown in FIG. 3, the driving arm 415 extends in a direction substantially orthogonal to the pair of movable iron pieces 412 and 413, and has a tip surface formed in an arc shape. In addition, the rotation shaft portion 416 has a substantially cylindrical shape that can be inserted into the rotation receiving portion 151 of the base 10 and is disposed on the same axis.

  As shown in FIGS. 3 and 4, the transmission lever 42 has a rectangular plate shape. At one end in the longitudinal direction of the transmission lever 42, a transmission portion 421 having a tip surface formed in an arc shape is provided. A connection receiving portion 422 for connecting to the rotation block 41 is provided at the other end in the longitudinal direction of the transmission lever 42. As shown in FIG. 4, the connection receiving portion 422 has a groove shape with which the tip of the driving arm portion 415 of the rotation block 41 can be engaged. A through hole 423 having a circular opening is provided between the transmission part 421 and the connection receiving part 422. The through-hole 423 is formed so that the diameters of the opening on the upper surface side (shown in FIG. 3) and the opening on the bottom surface side (shown in FIG. 4) are different. The shaft portion 152 has a shape that can be inserted.

  3 and 4, the card 43 has three insertion grooves 431, 432, and 433 into which the movable contact pieces 72 of the movable terminals 24, 25, and 26 are inserted. As shown in FIG. 4, a transmission receiving portion 434 having a concave shape into which the transmission portion 421 of the transmission lever 42 can be inserted is provided between the insertion grooves 432 and 433.

  As shown in FIG. 4, two protrusions 435 protruding from the bottom surface of the base 10 are provided on the bottom surface of the card 43. The protrusion 435 has an arcuate tip surface and is disposed between the insertion grooves 431 and 432 and between the insertion grooves 432 and 433, respectively.

  As shown in FIGS. 3 and 4, the support plate portion 44 has a substantially T-shape when viewed from above, and has a rectangular main body portion 441 and arm portions extending in opposite directions from one end of the main body portion 441. 442.

  A through hole 443 is provided at one end of the main body portion 441, and a rotation shaft portion 444 is provided at the other end. The through hole 443 has a circular opening and has a shape into which the rotation shaft portion 416 of the rotation block 41 can be inserted. The rotating shaft portion 444 has a substantially cylindrical shape that can be inserted into the opening on the upper surface side of the through hole 423 of the transmission lever 42.

  The arm portion 442 has a protrusion 445 for attaching the support plate portion 44 to the base 10 on the tip side. The protrusion 445 has a substantially cylindrical shape that can be fitted into the recess 153 of the base 10.

  As shown in FIG. 1, the cover 50 has a rectangular plate shape that can cover the opening of the base 10. Through holes 51 are provided in a pair of corners on the upper surface of the cover 50. The through hole 51 is disposed so as to form one through hole together with the through hole 18 of the base 10 when the cover 50 is attached to the base 10. Further, the side surface of the cover 50 is provided with an opening 52 for projecting the coil terminal 36 and a groove 53 fitted to the fixed terminals 21, 22, 23 and the movable terminals 24, 25, 26.

  Next, a method for assembling the electromagnetic relay 100 having the above configuration will be described.

  First, the contact mechanism unit 20 and the card 43 are assembled to the base 10.

  The contact mechanism unit 20 is assembled as follows. That is, first, the fixed terminals 21, 22, and 23 are assembled to the first to third storage portions 11, 12, and 13 of the base 10 with the card 43 disposed in the passage portions 16 and 17, and then the base The movable terminals 24, 25, and 26 are assembled to the tenth first to third storage portions 11, 12, and 13, respectively.

At this time, as shown in FIG. 2, the fixed terminals 21, 22 and 23 and the movable terminals 24, 25 and 26 partially protrude upward from the opening of the base 10, and the fixed contact 64 and the movable contact 76 are Oppositely arranged so as to be able to contact in the X direction and to be separated. That is, the contact mechanisms CM1 to CM3 are arranged in parallel along the X direction, and the fixed contact 64 and the movable contact 76 contact or separate along the X direction.

  The fixed terminals 21, 22, 23 and the movable terminals 24, 25, 26 are positioned so that the gaps 81, 82 and the passage portions 16, 17 are aligned and arranged in a line. Thus, the card 43 can be slid along the passage portions 16 and 17.

  Further, the card 43 is disposed such that the protrusion 435 is in contact with the bottom surface of the base 10 and the transmission receiving portion 434 is positioned between the fixed terminal 23 and the movable terminal 25. Thus, since the arc surface of the protrusion 435 and the bottom surface of the base 10 are in contact with each other, it is possible to reduce the resistance accompanying the sliding movement of the card 43. Further, the free end of the movable contact piece 72 is inserted into the insertion grooves 431, 432, and 433 of the card 43, and is sandwiched between the claw portions 78 and 79 to be prevented from coming off. Thus, since the card | curd 43 is pinched | interposed by the nail | claw parts 78 and 79 of the movable contact piece 72, all the movable contacts 76 of the movable terminals 24, 25, and 26 can be reliably moved to the same direction.

  The fixed terminal 21 is positioned by press-fitting the narrow part 63 into the terminal groove 111 of the first storage part 11 and press-fitting the end part on the first wide part 61 side into the terminal holding part 112. Similarly, the fixed terminal 22 is positioned by press-fitting the narrow portion 63 into the terminal groove 121 of the second storage portion 12 and press-fitting the end portion on the first wide portion 61 side into the terminal holding portion 122. Further, the fixed terminal 23 is positioned by press-fitting the narrow portion 63 into the terminal groove 131 of the third storage portion 12 and press-fitting the end portion on the first wide portion 61 side into the terminal holding portion 132.

  The movable terminal 24 is positioned by press-fitting the narrow portion 75 into the terminal groove 113 of the first storage portion 11 and press-fitting the fixed end of the first wide portion 73 into the terminal holding portion 114. Similarly, the movable terminal 25 is positioned by press-fitting the narrow portion 75 into the terminal groove 123 of the second storage portion 12 and press-fitting the fixed end of the first wide portion 73 into the terminal holding portion 124. The movable terminal 26 is positioned by press-fitting the narrow portion 75 into the terminal groove 133 of the third storage portion 12 and press-fitting the fixed end of the first wide portion 73 into the terminal holding portion 132.

  Next, the electromagnet device 30 is assembled to the base 10. At this time, the electromagnet device 30 is positioned by fitting the positioning protrusions 344 and 354 of the yokes 34 and 35 into the groove 142 of the fourth storage part 14 of the base 10, and the protrusions 141 of the fourth storage part 14 are positioned. Assembled in between. That is, the electromagnet device 30 is disposed at a position orthogonal to the contact / separation direction in which the movable contact 76 contacts or separates from the fixed contact 64 and is adjacent to the contact mechanisms CM1 to CM3, and the axis of the coil 32 The movable contact 76 is arranged so as to be parallel to the contact / separation direction of the fixed contact 64. When the electromagnet device 30 is assembled to the base 10, as shown in FIG. 2, the engaging groove 315 of the overhanging portion 314 of the spool 31 engages with the upper end of the side surface of the base 10, and the coil terminal 36 is outside the base 10. Exposed.

  Note that either the contact mechanism unit 20 or the electromagnet device 30 may be assembled first.

  Subsequently, the drive unit 40 excluding the card 43 is assembled to the base 10.

  First, the rotation block 41 is assembled to the fifth storage portion 15 of the base 10. At this time, the rotation block 41 is positioned by inserting one rotation shaft portion 416 into the rotation receiving portion 151 of the fifth storage portion 15.

  Next, the transmission lever 42 is assembled to the fifth storage portion 15 of the base 10. At this time, the transmission portion 421 of the transmission lever 42 is inserted into the transmission receiving portion 434 of the card 43, and the connection receiving portion 422 of the transmission lever 42 is engaged with the driving arm portion 415 of the rotating block 41 and the transmission lever 42. The through hole 423 is inserted into the rotation shaft portion 152 of the base 10. Thereby, the transmission lever 42 is positioned.

  The rotation receiving portion 151 and the rotation shaft portion 152 are provided between the electromagnet device 30 and the card 43 along the parallel direction of the contact mechanisms CM1 to CM3 (that is, the Y direction). 152 is disposed between the rotation receiving portion 151 and the card 43.

  Subsequently, the support plate portion 44 is assembled to the fifth storage portion 15 of the base 10. At this time, the other rotation shaft portion 416 of the rotation block 41 is inserted into the through hole 443 of the support plate portion 44, and the rotation shaft portion 444 of the support plate portion 44 is inserted into the through hole 423 of the transmission lever 42. Then, the protrusion 445 of the support plate 44 is fitted into the recess 153 of the base 10.

  That is, the rotation block 41 is rotatably supported by the rotation receiving portion 151 of the base 10 and the through hole 443 of the support plate portion 44, and the axis of the rotation shaft portion 416 of the rotation block 41 is A rotation axis of the rotation block 41 is configured. The transmission lever 42 is rotatably supported by the rotation shaft portion 152 of the base 10 and the rotation shaft portion 444 of the support plate portion 44, and the axis of the rotation shaft portion 152 of the base is the transmission lever. 42 rotational axes are formed.

  Finally, the cover 50 is attached to the base 10 and the assembly of the electromagnetic relay 100 is completed.

  Next, the operation of the electromagnetic relay 100 having the above configuration will be described with reference to FIGS.

  FIG. 8 shows the electromagnetic relay 100 in the off state. In the electromagnetic relay 100 in the off state, one end of the movable iron piece 412 is attracted to the yoke 35 and one end of the movable iron piece 413 is attracted to the yoke 34 by the permanent magnet 414 of the rotating block 41.

  At this time, the driving arm portion 415 of the rotation block 41 is on the left side in the X direction with respect to a straight line L1 connecting the center of the rotation shaft portion 416 of the rotation block 41 and the center of the rotation shaft portion 152 of the base 10. Is located. Accordingly, the transmission lever 42 is held so that the transmission unit 421 is positioned on the right side in the X direction with respect to the straight line L <b> 1, and all the movable contacts 76 are separated from the fixed contacts 64 via the card 43.

  When a current is supplied to the set coil of the coil 32 of the electromagnetic relay 100 in the off state shown in FIG. 8 and the set coil is excited, the magnetic force of the permanent magnet 414 of the rotating block 41 is canceled, and the other end of the movable iron piece 412 Is attracted to the yoke 34, and the other end of the movable iron piece 413 is attracted to the yoke 35. As a result, the rotation block 41 rotates counterclockwise, and the driving arm 415 moves to the right in the X direction with respect to the straight line L1.

  The movement of the driving arm 415 causes the transmission lever 42 to rotate clockwise, that is, in a direction different from the rotation direction of the rotation block 41. The rotation of the transmission lever 42 causes the card 43 to slide to the left in the X direction, bringing all the movable contacts 76 into contact with the fixed contacts 64. Thereby, the electromagnetic relay is switched from the off state to the on state shown in FIG. Thereafter, even if the supply of current to the set coil is stopped, the ON state of the electromagnetic relay 100 is maintained.

  When a current is supplied to the reset coil of the coil 32 of the electromagnetic relay 100 in the ON state shown in FIG. 9 and the reset coil is excited, the magnetic force of the permanent magnet 414 of the rotating block 41 is canceled, and one end of the movable iron piece 412 is The yoke 35 is sucked and one end of the movable iron piece 413 is sucked by the yoke 34. As a result, the rotation block 41 rotates clockwise, and the driving arm 415 is moved to the left in the X direction with respect to the straight line L1.

  Due to the movement of the driving arm 415, the transmission lever 42 rotates counterclockwise. By the rotation of the transmission lever 42, the card 43 slides to the right in the X direction, and all the movable contacts 76 are separated from the fixed contacts 64. Thereby, the electromagnetic relay is switched from the on state to the off state shown in FIG. Thereafter, even if the supply of current to the set coil is stopped, the OFF state of the electromagnetic relay 100 is maintained.

  In the electromagnetic relay 100 having the above-described configuration, the electromagnet device 30 is disposed in a direction orthogonal to the contact / separation direction in which the movable contact 76 contacts or separates from the fixed contact 64. For this reason, the distance between the fixed terminals 21, 22, 23 and the movable terminals 24, 25, 26 is increased as compared with the electromagnetic relay in which the electromagnet device is arranged in the contact / separation direction of the movable contact 76 with respect to the fixed contact 64. I can. As a result, for example, even if the outer diameter of the electromagnetic relay 100 is limited due to miniaturization, a desired insulation distance is secured between the fixed terminals 21, 22, 23 and the movable terminals 24, 25, 26. it can.

  Further, the movable contact 76 of the movable terminals 24, 25, 26 is moved in the same direction via the transmission lever 42 and the card 43 by the rotation of the rotation block 41. For this reason, the plurality of fixed contacts 64 and the movable contact 76 can be easily contacted or separated. Further, the movement amount of the card 43 can be adjusted by adjusting the positions of the rotation shaft portion 152 of the base 10 that is the rotation shaft of the transmission lever 42 and the rotation shaft portion 444 of the support plate portion 44. Thereby, for example, the power consumption of the electromagnetic relay 100 can be reduced.

  Further, the drive unit 40 is disposed between the adjacent contact mechanisms CM2 and CM3. For this reason, since the transmission lever 42 is connected at a position inside the card 43, the stress applied to the card 43 can be dispersed when the movable contact 76 is moved. As a result, there is no need to reinforce the card 43, and the manufacturing cost of the electromagnetic relay 100 can be reduced.

  Further, the electromagnet device 30 is disposed adjacent to the contact mechanisms CM1 to CM3, and is disposed so that the axis of the coil 32 and the contact / separation direction of the movable contact 76 with respect to the fixed contact 64 are parallel to each other. Yes. For this reason, the dead space in the electromagnetic relay 100 can be reduced, and the electromagnetic relay 100 can be reduced in size easily.

(Other embodiments)
The contact mechanism unit 20 includes three sets of contact mechanisms CM1 to CM3, but is not limited thereto. The contact mechanism part only needs to be composed of a plurality of contact mechanisms.

  Note that the electromagnetic relay 100 having the above-described configuration can be used as a two-pole electromagnetic relay by removing any of the contact mechanisms CM1 to CM3. Thereby, it can be used as an electromagnetic relay for either three-phase or single-phase.

  In the contact mechanisms CM1 to CM3, two fixed contacts 64 and two movable contacts 76 each having a circular contact surface with different diameters are provided, but the present invention is not limited to this. At least one of the fixed contact and the movable contact may be provided in any shape and size.

  The fixed terminal portion 62 and the movable terminal portion 74 are formed in a substantially L shape by bending the wide portions 62 and 74, respectively, but are not limited thereto. The fixed terminal portion 62 and the movable terminal portion 74 may be provided in any shape and size according to the design of the electromagnetic relay, for example, a shape that does not bend the wide portion (so-called straight shape) Alternatively, the wide portion may not be provided.

  The electromagnet device 30 is disposed in a direction orthogonal to the contact / separation direction of the movable contact 76 with respect to the fixed contact 64 with respect to the contact mechanisms CM1 to CM3, but is not limited thereto. The electromagnet device can be arbitrarily arranged as long as the direction intersects the direction of contact of the movable contact with the fixed contact.

  Further, although the electromagnet device 30 is arranged so that the axis of the coil 32 and the contact / separation direction of the movable contact 76 with respect to the fixed contact 64 are parallel to each other, the present invention is not limited thereto. If possible, for example, the electromagnet device may be arranged such that the axis of the coil is orthogonal to the contact / separation direction of the movable contact with respect to the fixed contact.

  The coil 32 of the electromagnet device 30 may be a one-turn coil or a two-turn coil, if possible.

  The drive unit 40 is disposed between the contact mechanisms CM2 and CM3, but is not limited thereto. The drive part should just be arrange | positioned between adjacent contact mechanisms, for example, may be arrange | positioned between contact mechanism CM1, CM2.

  The drive unit 40 is not limited to the above-described embodiment, and may be arbitrarily adopted as long as the drive unit 40 has a configuration capable of bringing the fixed contact and the movable contact into contact with each other or opening them by turning the turning block. For example, if possible, the transmission lever may be omitted and the driving arm of the rotating block may be directly connected to the card.

  The shapes and sizes of the contact mechanisms CM <b> 1 to CM <b> 3, the electromagnet device 30, and the drive unit 40 can be changed as appropriate according to the design of the electromagnetic relay.

  It goes without saying that the constituent elements described in the above embodiments may be combined as appropriate, and may be selected, replaced, or deleted as appropriate.

  The electromagnetic relay of this invention can be utilized for a smart meter, for example.

10 Base 11 First storage portion 12 Second storage portion 13 Third storage portion 111, 121, 131 Terminal grooves 112, 122, 132 Terminal holding portions 113, 123, 133 Terminal grooves 114, 124, 134 Terminal holding portion 14 Fourth Storage part 141 Protrusion 142 Groove part 15 Fifth storage part 151 Rotation receiving part 152 Rotation shaft part 153 Recess 16, 17 Passage part 18 Through hole 20 Contact mechanism part 21, 22, 23 Fixed terminal 24, 25, 26 Movable terminal 30 Electromagnet device 31 Spool 311, 312 鍔 part 313 Through hole 314 Overhang part 315 Engaging groove 32 Coil 33 Iron core 331 Protruding part 34, 35 Yoke 341, 351 First flat part 342, 352 Second flat part 343, 353 Fitting Grooves 344, 354 Positioning projections 36, 37, 38 Coil terminal 40 Drive unit 41 Rotating block 411 Body portion 412 13 Movable iron piece 414 Permanent magnet 415 Driving arm 416 Rotating shaft 42 Transmission lever 421 Transmission unit 422 Connection receiving unit 423 Through hole 43 Card 431, 432, 433 Insertion groove 434 Transmission receiving unit 435 Projection 44 Support plate 441 Body portion 442 Arm portion 443 Through hole 444 Rotating shaft portion 445 Projection 50 Cover 51 Through hole 52 Opening 53 Groove portion 61 First wide portion 62 Second wide portion, fixed terminal portion 63 Narrow portion 64 Fixed contact point 71 Main body portion 72 Movable Contact piece 73 1st wide part 74 2nd wide part, movable terminal part 75 narrow part 76 movable contact 77 bending part 78, 79 claw part 81, 82 clearance 100 electromagnetic relay

Claims (6)

An electromagnet device having at least one coil;
A plurality of fixed contacts and a plurality of movable contacts arranged to face or separate from the fixed contacts and arranged in parallel along a contact / separation direction in which the movable contacts contact or separate from the fixed contacts Contact mechanism of
The rotating block rotates in different directions depending on the direction of the current supplied to the coil, and the rotating contact of the plurality of contact mechanisms is brought into contact with or opened by the fixed contact by rotating the rotating block. A drive unit to be separated;
With
The electromagnetic relay, wherein the electromagnet device is disposed in a direction intersecting the contact / separation direction with respect to the contact mechanism.   The drive unit rotates in a direction different from the rotation direction of the rotation block when the movable block that moves the movable contacts of the plurality of contact mechanisms in the same direction and the rotation block rotate. The electromagnetic relay according to claim 1, further comprising: a transmission member that transmits the rotation of the rotation block to the movable member.   The electromagnetic relay according to claim 2, wherein the driving unit is disposed between the adjacent contact mechanisms. The electromagnet device, a plurality of the contact mechanisms, and a base that houses the drive unit;
The said base has the 1st rotation support part which supports the said rotation block so that rotation is possible, and the 2nd rotation support part which supports the said transmission member so that rotation is possible. 3. The electromagnetic relay according to 3.   The first and second rotation support portions are provided between the electromagnet device and the movable member along a parallel direction of the plurality of contact mechanisms, and the second rotation support portion is the first rotation support portion. The electromagnetic relay of Claim 4 arrange | positioned between the rotation support part and the said movable member.   The electromagnet device is disposed so as to be adjacent to the contact mechanism, and is disposed so that the axial center of the coil and the contact / separation direction are parallel to each other. The electromagnetic relay according to item.

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