JP5930095B1 - Electromagnetic drive mechanism and electromagnetic relay having the same - Google Patents

Abstract

An electromagnetic drive mechanism suitable for miniaturization and an electromagnetic relay provided with the electromagnetic drive mechanism are provided. An electromagnetic drive mechanism includes a first iron core 35 and a first iron core 35 wound around the first iron core 35. A second electromagnet having a first electromagnet block 301 having a coil 33, a second iron core 36 spaced from the first iron core 35, and a second coil 34 wound around the second iron core 36. A rotation block that is rotatably arranged between the block 302 and the first and second iron cores 35 and 36 and rotates in different directions depending on the direction of the current supplied to the first and second coils 33 and 34. 41. [Selection] Figure 11

Description

  The present invention relates to an electromagnetic drive mechanism and an electromagnetic relay including the same.

  Conventionally, as an electromagnetic relay, there exist some which were indicated in patent documents 1, for example. This conventional electromagnetic relay includes an electromagnetic drive mechanism composed of an electromagnet device and a rotating block that rotates in different directions according to the current supplied to the coil of the electromagnet device, and is movable by this electromagnetic drive mechanism. The contact is in contact with or separated from the fixed contact.

China Utility Model Registration Notice CN2014435354Y

  However, in the conventional electromagnetic relay, substantially L-shaped yokes are provided at both ends of the iron core of the electromagnet device, the free ends of the yokes are opposed to each other with a space therebetween, and a rotating block is provided between the opposed free ends. Is arranged to be rotatable. For this reason, in order to rotate the rotating block, a gap corresponding to the outer diameter shape of the rotating block or the number of turns of the coil is provided between the body portion of the spool and the yoke extending along the wound coil. In some cases, it was not possible to cope with downsizing.

  In view of the above-described problems, an object of the present invention is to provide an electromagnetic drive mechanism suitable for miniaturization and an electromagnetic relay including the same.

  In order to solve the above problems, an electromagnetic drive mechanism of the present invention is spaced apart from a first electromagnet block having a first iron core, a first coil wound around the first iron core, and the first iron core. A second electromagnet block having a second iron core arranged and a second coil wound around the second iron core; and a first electromagnet that is pivotally arranged between the first and second iron cores. A rotating block that rotates in different directions according to the direction of the current supplied to the two coils.

  According to the electromagnetic drive mechanism of the present invention, the rotating block is arranged between the first and second iron cores arranged at intervals. As a result, the rotating block can be rotated regardless of the outer diameter shape of the rotating block or the number of turns of the coil, and the electromagnetic drive mechanism can be easily downsized.

  As one embodiment of the present invention, the axial center of the first iron core is the first axial center, and the length from the first axial center to the end of the first iron core in the direction perpendicular to the first axial center is set. In addition to the first length, the axis of the second iron core is the second axis, and the length from the second axis to the end of the second iron core in the direction orthogonal to the second axis is the second length. When the length is set, the first axis and the second axis are parallel to each other, and the linear distance between the first and second axes is determined by the sum of the first length and the second length. It is good also as a structure by which the said 1st, 2nd iron core is arrange | positioned so that it may become small.

  According to this embodiment, the first axis and the second axis are parallel, and the linear distance between the first and second axes is smaller than the sum of the first length and the second length. Thus, the 1st, 2nd iron core is arrange | positioned. As a result, the rotating block can be rotated regardless of the outer diameter shape of the rotating block or the number of turns of the coil, and the electromagnetic drive mechanism can be easily downsized.

  As one embodiment of the present invention, the first and second iron cores may be arranged on the same axis.

  According to this embodiment, the first and second iron cores are arranged on the same axis. As a result, the rotating block can be rotated regardless of the outer diameter shape of the rotating block or the number of turns of the coil, and the electromagnetic drive mechanism can be easily downsized.

  As one embodiment of the present invention, the first electromagnet block is composed of a body part into which the first iron core is inserted and first and second flange parts provided at both ends of the body part. The second electromagnet block has a second spool composed of a body portion into which the second iron core is inserted and first and second flange portions provided at both ends of the body portion. The first and second spools may be integrated by a connecting portion that connects the second collar portion of the first spool and the first collar portion of the second spool.

  According to this embodiment, since the first and second spools are integrated via the connecting portion, even a small electromagnet device can be easily attached to an electromagnetic relay or the like.

  As one embodiment of the present invention, the connecting portion may have a coil groove through which a lead wire of the first coil or the second coil passes.

  According to this embodiment, the insulation of the lead wire of the coil passing through the connecting portion can be improved, and disconnection of the lead wire can be prevented.

  As an embodiment of the present invention, the rotating block is disposed in a recess formed by the second flange portion of the first spool, the first flange portion of the second spool, and the connecting portion. It is good also as a structure.

  According to this embodiment, the rotation block is arranged at the connecting portion. Thereby, an electromagnetic drive mechanism can be reduced in size easily.

  As one embodiment of the present invention, the first and second coils may have different numbers of turns.

  According to this embodiment, the magnetic force generated in the first and second electromagnet blocks can be adjusted. Thereby, the freedom degree of design of an electromagnetic drive mechanism can be expanded.

  The electromagnetic relay of the present invention includes the drive mechanism.

  According to the electromagnetic relay of the present invention, the size can be easily reduced by incorporating the drive mechanism.

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 perspective view of the electromagnet apparatus of the electromagnetic relay of FIG. It is the perspective view seen from the direction different from FIG. 6 of the electromagnet apparatus 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 perspective view of the spool 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. It is a schematic diagram which shows the 1st modification of the 1st, 2nd iron core of the electromagnetic relay of FIG. It is a schematic diagram which shows the 2nd modification of the 1st, 2nd iron core of the electromagnetic relay of FIG. It is a schematic diagram which shows the 3rd modification of the 1st, 2nd iron core 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, an electromagnetic relay 100 including an electromagnetic drive mechanism according to an embodiment of the present invention includes a base 10, a contact mechanism unit 20 accommodated in the base 10, an electromagnet device 30, and a drive unit 40. And a cover 50 covering the base 10. 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 the movable contact terminal 24 are provided in the first to third storage portions 11, 12, 13 respectively. , 25, 26 are provided with terminal grooves 113, 123, 133 and terminal holding portions 114, 124, 134. 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 upper side surface of the base 10 in the Y direction, and has protrusions 141 and 142 provided to protrude from the bottom surface of the base 10. . The protrusions 141 and 142 are arranged at the lower end in the Y direction of the fourth storage portion 14 with an interval along the X direction.

  The protrusion 141 includes a first protrusion 143 that is substantially square when viewed from above, and second and third protrusions 144 and 145 that are rectangular when viewed from above. The first and second protrusions 143 and 144 are arranged at intervals along the Y direction, and the third protrusion 145 is arranged between the first and second protrusions 143 and 144 along the X direction. . The first and second protrusions 143 and 144 protrude higher than the third protrusion 145. An arcuate notch 146 is provided on the upper surface of the first protrusion 143. In addition, a concave portion 147 having a rectangular shape in a top view is provided on the upper surface of the third protrusion 145. On the other hand, the protrusion 142 has a shape as viewed from above and has substantially the same height as the third protrusion 145. A concave portion 148 having a rectangular shape in a top view is provided on the upper surface of the protrusion 142.

  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 a rotation receiving portion 151 and a rotation shaft portion 152 provided on the bottom surface of the base 10. have. The rotation receiving portion 151 has a concave shape having a circular opening, and the center thereof is disposed on a straight line connecting the centers of the protrusions 141 and 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 recesses 147 and 148 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 contact terminal 24. The contact mechanism CM2 includes a pair of fixed terminals 22 and a movable contact terminal 25. The contact mechanism CM3 includes It consists of a pair of fixed terminals 23 and a movable contact terminal 26.

  As shown in FIGS. 3 and 4, each of the fixed terminals 21, 22, and 23 is a rectangular plate-like body, and includes first and second wide portions 61 and 62 provided at both ends in the longitudinal direction, The second wide portions 61 and 62 are connected to each other with a narrow portion 63.

  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 contact terminals 24, 25, 26 includes a main body 71 and a movable contact piece 72 as shown in FIGS. 3 and 4.

  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 FIGS. 6 to 9, the electromagnet device 30 includes first and second spools 31 and 32, first and second coils 33 and 34, first and second iron cores 35 and 36, and a yoke 37. And three coil terminals 381, 382, and 383.

  As shown in FIG. 9, the first spool 31 includes a prismatic body 311 and first and second collar portions 312 and 313 that are provided at both ends of the body 311 and have a rectangular plate shape. Has been. The body portion 311 is provided with through holes (not shown) that open to the first and second flange portions 312 and 313.

  As shown in FIG. 9, the second spool 32 includes a prismatic body portion 321 and first and second flange portions 322 and 323 which are provided at both ends of the body portion 321 and have a rectangular plate shape. Has been. As shown in FIG. 8, the body portion 321 is provided with a through hole 324 that opens to the first and second flange portions 322 and 323. As shown in FIG. 9, the second flange portion 323 is provided with an overhang portion 325 having three terminal holes 326.

  The first and second spools 31 and 32 of the electromagnet device 30 have the same configuration, but the lengths of the body portions 311 and 321 are different. That is, the first spool 31 has a trunk 311 that is longer than the trunk 321 of the second spool 32.

  The first spool 31, the first coil 33, and the first iron core 35 constitute a first electromagnet block 301, and the second spool 32, the second coil 34, and the second iron core 36 constitute a second electromagnet block 302. doing.

  Further, as shown in FIG. 9, a connecting portion 39 having a substantially rectangular plate shape is provided between the first and second spools 31 and 32. Both ends of the connecting portion 39 in the longitudinal direction are respectively connected to one short side edge of the second collar portion 313 of the first spool 31 and one short edge of the first collar portion 322 of the second spool 32. The first and second spools 31 and 32 are integrated.

  At this time, in the first and second spools 31 and 32, the second collar 313 of the first spool 31 and the first collar 322 of the second spool 32 face each other in a substantially parallel manner, and The body portion 311 of the first spool and the body portion 321 of the second spool 32 are integrated so as to be aligned in a row.

  The second flange 313 of the first spool 31, the first flange 322 of the second spool 32, and the connecting portion 39 constitute a recess 90. Of the surface of the connecting portion 39, the surface forming the recess 90 is defined as the inner surface (the surface shown in FIG. 6), and the surface facing the inner surface is defined as the outer surface (the surface shown in FIG. 7).

  As shown in FIG. 7, a positioning hole 391 is provided on the second flange 313 side of the first spool 31 in the longitudinal direction of the connecting portion 39, and the first flange of the second spool 32 in the longitudinal direction of the connecting portion 39 is provided. A positioning hole 392 is provided on the part 322 side. The positioning hole 391 has a substantially T shape, and is provided so that the protrusion 141 of the base 10 can be fitted. The positioning hole 392 has a substantially rectangular shape, and is provided so that the protrusion 142 of the base 10 can be fitted.

  A through hole 393 having a circular opening is provided in the approximate center of the connecting portion 39. The through hole 393 has a shape into which the rotation shaft portion 416 of the rotation block 41 can be inserted, and the rotation shaft portion 416 is connected to the rotation receiving portion 151 of the base 10 through the through hole 393. It can be inserted. As shown in FIG. 7, a coil groove 394 is provided on the long side edge of the outer surface of the connecting portion 39. In the coil groove 394, the lead wire of the first coil 33 is routed toward the second coil 34. Thereby, while being able to improve the insulation of the lead wire of the 1st coil 33 which passes along the connection part 39, disconnection of the lead wire can be prevented.

  As shown in FIGS. 6 and 7, the first and second coils 33 and 34 are wound around the body 311 of the first spool 31 and the body 321 of the second spool 32, respectively, and are arranged on the same axis. Has been. The first and second coils 33 and 34 are composed of a set coil and a reset coil, for example. The set coil and the reset coil are wound so that magnetic fields in opposite directions are generated by supplying a current.

  The first and second coils 33 and 34 of the electromagnet device 30 have different numbers of turns depending on the lengths of the body portions 311 and 321, and the magnetic force generated by the first and second coils 33 and 34 is different. It has been adjusted to be approximately even.

  As shown in FIG. 8, each of the first and second iron cores 35 and 36 has a substantially rectangular plate shape with different lengths in the longitudinal direction, and is made of a magnetic material. Positioning projections 351, 361 projecting in the short direction are provided at one end in the longitudinal direction of the first and second iron cores 35, 36, and connecting recesses 352, 362 are provided at the other end in the longitudinal direction. . Further, as shown in FIG. 6, the first and second iron cores 35 and 36 include a through hole (not shown) provided in the body portion 311 of the first spool and a through hole of the body portion 321 of the second spool 32. 324 is inserted respectively.

  At this time, the first iron core 35 is inserted into the through hole of the first spool so that the end on the positioning projection 351 side is exposed in the recess 90 and the positioning projection 351 is positioned in the positioning hole 391 of the connecting portion 39. ing. The second iron core 36 is inserted into the through hole 324 of the second spool so that the end on the positioning projection 361 side is exposed in the recess 90 and the positioning projection 361 is positioned in the positioning hole 392 of the connecting portion 39. ing. That is, the first and second iron cores 35 and 36 are arranged on the same axis, and a space is provided between the end portions on the side of the opposing positioning projections 351 and 361.

  As shown in FIG. 8, the yoke 37 has a substantially U-shaped plate shape, a first flat surface portion 371 having a rectangular shape, and second and second portions provided at both ends in the longitudinal direction of the first flat surface portion 371. It is comprised by the 3rd plane part 372,373.

  The first flat surface portion 371 is disposed such that the wide surface 376 is parallel to the wide surfaces 353 and 363 of the first and second iron cores 35 and 36. The second and third plane portions 372 and 373 extend from the wide surface 376 of the first plane portion 371 in the orthogonal direction, and are provided with connecting projections 374 and 375 at the tips. The second flat surface portion 372 is in contact with the first flange portion 312 of the first spool 31, and the connection protrusion 374 is connected to the connection recess 352 of the first iron core 35. Further, the third flat surface portion 373 is in contact with the second flange portion 323 of the second spool 32, and the connection protrusion 375 is connected to the connection recess 362 of the second iron core 36.

  As shown in FIG. 6, the coil terminals 381, 382, and 383 are press-fitted into terminal holes 326 (shown in FIG. 9) of the overhanging portion 325 of the second spool 32. The coil terminals 381 and 382 are connected to the lead wires of the set coil, and the coil terminals 382 and 383 are connected to the 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, a card 43, and a support plate 44.

  As shown in FIG. 10, 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.

  As shown in FIG. 3, the card 43 has three insertion grooves 431, 432, and 433 into which the movable contact pieces 72 of the movable contact 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, on the side surface of the cover 50, there are a notch 52 for projecting the coil terminals 381, 382 and 383, and a groove portion 53 fitted to the fixed terminals 21, 22 and 23 and the movable contact terminals 24, 25 and 26. Is provided.

  In the electromagnetic relay 100 of the present embodiment, the first and second electromagnet blocks 301 and 302 of the electromagnet device 30 and the drive unit 40 constitute an electromagnetic drive mechanism.

  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. Subsequently, the movable contact terminals 24, 25, and 26 are assembled to the first to third storage portions 11, 12, and 13 of the base 10, respectively.

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

  The fixed terminals 21, 22, 23 and the movable contact 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 located between the fixed terminal 23 and the movable contact 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 contact 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 contact 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 contact 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 contact 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, first, the protrusion 141 of the fourth storage portion 14 of the base 10 is positioned in the positioning hole 391 of the electromagnet device 30, and the protrusion 142 of the fourth storage portion 14 is positioned in the positioning hole 392 of the electromagnet device 30. In addition, the electromagnet device 30 is housed in the fourth housing portion 14. Then, the positioning projection 351 of the electromagnet device 30 is fitted into the recess 147 of the fourth storage portion 14, and the positioning projection 361 of the electromagnet device 30 is fitted into the recess 148 of the fourth storage portion 14. Accordingly, the electromagnet device 30 is positioned 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. The coils 33 and 34 are positioned so that the axial centers of the coils 33 and 34 are parallel to the contact / separation direction of the movable contact 76 with respect to the fixed contact 64, and are assembled to the fourth storage portion 14. When the electromagnet device 30 is assembled to the base 10, the coil terminals 381, 382, and 383 are exposed to the outside of the base 10 as shown in FIG.

  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 accommodated between the first and second iron cores 35 and 36 of the recess 90 of the electromagnet device 30, and the rotation shaft portion 416 is interposed through the through hole 393 of the connecting portion 39. It is inserted into the rotation receiving part 151 of the fifth storage part 15. Thereby, the rotation block 41 has its rotation axis positioned on the axis of the first and second iron cores 35 and 36, and the first and second iron cores 35, 413 between the pair of movable iron pieces 412 and 413. 36 is positioned and assembled to 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.

  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 portion 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. 11 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 first iron core 35 and one end of the movable iron piece 413 is attracted to the second iron core 36 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 current is supplied to the set coils of the coils 33 and 34 of the electromagnetic relay 100 in the off state shown in FIG. 11 and the set coils are excited, the magnetic force of the permanent magnet 414 of the rotating block 41 is canceled, and the movable iron piece 412 The other end is sucked by the second iron core 36 and the other end of the movable iron piece 413 is sucked by the first iron core 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 current is supplied to the reset coils of the coils 33 and 34 of the electromagnetic relay 100 in the ON state shown in FIG. 12 and the reset coil is excited, the magnetic force of the permanent magnet 414 of the rotating block 41 is canceled, and the movable iron piece 412 One end is sucked by the first iron core 35, and one end of the movable iron piece 413 is sucked by the second iron core 36. 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 rotating block 41 is disposed between the first and second iron cores 35 and 36 disposed on the same axis with a space therebetween. As a result, the rotation block 41 can be rotated regardless of the outer diameter shape of the rotation block 41 or the number of turns of the first and second coils 33, 34, and the electromagnetic drive mechanism can be easily downsized. .

  Further, since the first and second spools 31 and 32 of the electromagnet device 30 are integrated via the connecting portion 39, even the small electromagnet device 30 can be easily attached to the electromagnetic relay 100.

  Further, 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 contact terminals 24, 25, 26 is increased as compared with the electromagnetic relay in which the electromagnet device is arranged in the direction of contact of the movable contact with respect to the fixed contact. it can. As a result, for example, even when the outer diameter of the electromagnetic relay 100 is limited due to miniaturization, a desired insulation distance can be provided between the fixed terminals 21, 22, 23 and the movable contact terminals 24, 25, 26. It can be secured.

  Further, the movable contact 76 of the movable contact terminals 24, 25, and 26 is moved in the same direction through 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 the axial centers of the first and second coils 33 and 34 and the contact / separation direction of the movable contact 76 with respect to the fixed contact 64 are parallel. It is arranged to be. 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 should just have one or more 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, in the electromagnet device 30, the axial centers of the first and second coils 33 and 34, that is, the axial centers of the first and second iron cores 35 and 36, and the contact / separation direction of the movable contact 76 with respect to the fixed contact 64 are parallel. Although it arrange | positions so that it may become, it is not restricted to this. 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.

  In the electromagnet device 30 having the above-described configuration, the first and second electromagnet blocks are configured by the first and second spools 31 and 32, the first and second coils 33 and 34, and the first and second iron cores 35 and 36. However, it is not limited to this. The electromagnet block only needs to include at least an iron core and a coil wound around the iron core, and the spool and the yoke may be omitted if possible.

  The first and second spools 31 and 32 and the connecting portion 39 may be formed as separate bodies and then connected, or may be formed by integral molding. Further, the first and second spools 31 and 32 and the connecting portion 39 may all be made of the same material, or may be made of different materials.

  If possible, the first and second coils 33 and 34 may be one-turn coils or two-turn coils.

  The first and second coils 33 and 34 can adjust the generated magnetic force by adjusting the number of turns. For this reason, the lengths of the body portions 311 and 321 of the first and second spools 31 and 32 can be arbitrarily changed, and the degree of freedom in designing the electromagnetic drive mechanism can be increased.

  The first and second iron cores 35 and 36 are not limited to being disposed on the same axis. For example, as shown in FIG. 13, the first and second iron cores 35 and 36 include a first axis L1 that is an axis of the first iron core 35 and a second axis L2 that is an axis of the second iron core 36. Can also be arranged so that they intersect.

  As shown in FIG. 14, the first and second iron cores 35 and 36 are parallel to the first and second axis L1 and L2, and are straight lines between the first and second axis 35 and 36. The distance W3 may be arranged so as to be smaller than the sum of the first length W1 and the second length W2. The first length W1 is the length from the end of the first iron core 35 in the short direction to the first axis L1, and the second length W2 is from the end of the second iron core 36 in the short direction. It is assumed that the length is up to the second axis L2.

  Furthermore, as shown in FIG. 15, the shapes of the first and second iron cores 35 and 36 can be appropriately changed according to the design of the electromagnetic relay 100 and the like. 13-15, only the 1st, 2nd iron cores 35 and 36 are shown for convenience of explanation.

  The connecting part 39 may be omitted 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.

In the electromagnetic relay 100 having the above-described configuration, the first and second electromagnet blocks 301 and 302 and the drive unit 40 constitute an electromagnetic drive mechanism, but the invention is not limited thereto. The electromagnetic drive mechanism only needs to include two electromagnet blocks in which the iron cores are arranged on the same axis with a space between them, and a rotating block arranged between the iron cores of the electromagnet blocks. Any driving mechanism capable of contacting and separating the contacts can be employed. 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 electromagnetic drive mechanism of the present invention is not limited to the electromagnetic relay of the above-described embodiment, but can be applied to other configurations of electromagnetic relays, for example, self-returning type electromagnetic relays.

  Moreover, the electromagnetic drive mechanism of this invention is applicable not only to an electromagnetic relay but other electromagnetic devices.

  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 drive mechanism and the electromagnetic relay of the present invention can be used 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, 142 Protrusion part 143 First protrusion 144 Second protrusion 145 Third protrusion 146 Notch 147, 148 Recess 15 Fifth storage part 151 Rotation receiving part 152 Rotation shaft part 153 Recess 16, 16 Passage part 18 Through hole 20 Contact mechanism 21, 22, 23 Fixed terminal 24, 25, 26 Movable contact terminal 30 Electromagnet device 301 1st electromagnet block 302 2nd electromagnet block 31 1st spool 311 trunk 312 1st collar 313 2nd collar 32 Second spool 321 Body 322 First collar 323 Second collar 324 Through hole 325 Overhang 326 Terminal hole 33 First coil 3 Second coil 35 First iron core 351 Positioning projection 352 Connection recess 353 Wide surface 36 Second iron core 361 Positioning projection 362 Connection recess 363 Wide surface 37 Yoke 371 First plane portion 372 Second plane portion 373 Third plane portions 374, 375 Connection Projection 376 Wide surface 381, 382, 383 Coil terminal 39 Coupling part 391, 392 Positioning hole 393 Through hole 394 Coil groove 40 Drive part 41 Rotating block 411 Body part 412, 413 Movable iron piece 414 Permanent magnet 415 Driving arm part 416 Rotating shaft portion 42 Transmission lever 421 Transmission portion 422 Connection receiving portion 423 Through hole 43 Card 431, 432, 433 Insertion groove 434 Transmission receiving portion 435 Projection portion 44 Support plate portion 441 Main body portion 442 Arm portion 443 Through hole 444 Rotation Shaft portion 445 Protrusion 50 Cover 51 Through hole 52 Notch 53 Groove portion 6 1st wide part 62 2nd wide part, fixed terminal part 63 Narrow part 64 Fixed contact 71 Main part 72 Movable contact piece 73 1st wide part 74 2nd wide part, movable terminal part 75 Narrow part 76 Movable contact 77 Curve Portions 78 and 79 Claw portions 81 and 82 Clearance 90 Recess 100 Electromagnetic relay

Claims (7)

A first electromagnet block having a first iron core and a first coil wound around the first iron core;
A second electromagnetic block having a second iron core spaced from the first iron core, and a second coil wound around the second iron core;
A rotating block that is rotatably arranged between the first and second iron cores and that rotates in different directions depending on the direction of current supplied to the first and second coils;
Equipped with a,
The first electromagnet block has a first spool composed of a body portion into which the first iron core is inserted and first and second flange portions provided at both ends of the body portion, and the second spool. The electromagnet block has a second spool composed of a body part into which the second iron core is inserted, and first and second flange parts provided at both ends of the body part,
An electromagnetic drive mechanism in which the first and second spools are integrated by a connecting portion that connects a second collar portion of the first spool and a first collar portion of the second spool . The axial center of the first iron core is the first axial center, the length from the end of the first iron core in the direction orthogonal to the first axial center to the first axial center is the first length, and the first When the axis of the two iron cores is the second axis, and the length from the end of the second iron core in the direction orthogonal to the second axis is the second length,
The first axis and the second axis are parallel to each other, and the linear distance between the first and second axes is smaller than the sum of the first length and the second length. The electromagnetic drive mechanism according to claim 1, wherein the first and second iron cores are arranged.   The electromagnetic drive mechanism according to claim 1 or 2, wherein the first and second iron cores are disposed on the same axis. The electromagnetic drive mechanism according to any one of claims 1 to 3 , wherein the connecting portion has a coil groove through which a lead wire of the first coil or the second coil passes. The said rotation block is arrange | positioned in the recess formed by the 2nd collar part of the said 1st spool, the 1st collar part of the said 2nd spool, and the said connection part . The electromagnetic drive mechanism according to item 1 . The electromagnetic drive mechanism according to any one of claims 1 to 5 , wherein the first and second coils have different numbers of turns. The electromagnetic relay provided with the electromagnetic drive mechanism of any one of Claim 1 to 6 .

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