JP4730108B2 - Electromagnetic relay - Google Patents

Description

  The present invention relates to a multipolar electromagnetic relay having a plurality of switching contacts.

  As a conventional electromagnetic relay of this type, an electromagnet block and a movable block are assembled in a vertical position on a resin-molded cover, and a plurality of switching contacts are mounted in parallel in the front and rear rows in two rows across the partition. And what was protrudingly provided from the surface part of the cover by the terminal leg part extended from each switching contact is known (refer patent document 1).

  The electromagnetic relay having the above configuration can reduce the mounting area on the board, but it may be difficult to mount the board on the board in the low-volume housing because the height is relatively large. .

  In order to solve such problems, low-profile multipole electromagnetic relays have been developed. As this electromagnetic relay, for example, as shown in FIGS. 23 to 25, the interior of the housing 200 is partitioned into two switching contact accommodating portions 202 and 203 in the vertical direction (for example, the vertical direction) by a partition wall 201, and As shown in FIG. 24, the open / close contact 206 formed of the fixed terminal 204 and the movable terminal 205 is connected to the open / close contact accommodating portion 202, and the fixed spring 204 A of the fixed terminal 204 and the movable spring 205 A of the movable terminal 205 are Two sets are arranged in parallel to each other, and the fixed terminal foot portion 204B and the movable terminal foot portion 205B are projected from the cover 200A, and the lower opening / closing contact accommodating portion 203 includes the fixed terminal 207 and the movable terminal 208. The switching contact 209 is set so that the fixed spring 207A of the fixed terminal 207 and the movable spring 208A of the movable terminal 208 are parallel to the partition wall 201. Te, in which each arranged in two pairs, and the fixed terminal foot 207B and the movable terminal foot 208B to the configuration to project from the cover 200A.

In this electromagnetic relay, when the fixed terminal foot portion 204B, the movable terminal foot portion 205B, the fixed terminal foot portion 207B, and the movable terminal foot portion 208B are protruded from the cover 200A, as shown in FIG. The fixed terminal foot portion 204B and the movable terminal foot portion 205B are disposed so as to pass down the partition wall 201 along the one side surface 200B of the housing 200 and descend, and the fixed terminal foot portion 207B and the movable terminal of the lower switching contact 209 are arranged. The foot 208B is arranged near the center of the housing 200 (see Patent Document 2).
Japanese Patent Laid-Open No. 2000-285782 Japanese Patent Laid-Open No. 11-273530

  When the electromagnetic relay is configured as a safety relay, the safety relay requires circuit duality according to safety standard requirements, and the circuit is duplicated by connecting two electromagnetic relays. When two conventional electromagnetic relays described above are used and the circuit is duplicated by connecting the switching contacts, it is difficult to design the wiring pattern.

  That is, as described above, in the conventional electromagnetic relay, the fixed terminal foot portion 204B and the movable terminal foot portion 205B of the upper switching contact 206 are passed down the partition wall 201 along the one side surface 200B of the housing 200. Since the fixed terminal foot 207B and the movable terminal foot 208B of the lower switching contact 209 are arranged near the center of the housing 200, as shown in FIG. 27, one electromagnetic relay R1 -1 fixed terminal foot 204B is connected to wiring pattern 211, the other electromagnetic relay R2-1 fixed terminal foot 204B is connected to wiring pattern 212, and one electromagnetic relay R1-1 movable terminal foot 205B. And the movable terminal leg 205B of the other electromagnetic relay R2-1 are connected by a wiring pattern 213. Also, the wiring pattern 214 is connected to the fixed terminal foot 207B of one electromagnetic relay R1-1, the wiring pattern 215 is connected to the fixed terminal foot 207B of the other electromagnetic relay R2-1, and one electromagnetic relay R1- One movable terminal foot 208B is connected to the movable terminal foot 208B of the other electromagnetic relay R2-1 by a wiring pattern 216. Similarly, other combinations of the fixed terminal legs 204B and the movable terminal legs 205B are also connected to the wiring pattern.

  In this case, the wiring pattern 213 comes into contact with the movable terminal foot 208B of one electromagnetic relay R1-1, and the wiring pattern 212 comes into contact with the fixed terminal foot 207B of the other electromagnetic relay R2-1. In addition, the wiring pattern 216 comes into contact with the movable terminal leg 205B of the other electromagnetic relay R2-1, and the wiring pattern 214 is a fixed terminal of the one electromagnetic relay R1-1. It comes in contact with the foot 204B.

  In order to eliminate such contact with the movable terminal foot 208B, fixed terminal foot 207B, movable terminal foot 205B, and fixed terminal foot 204B of the wiring patterns 213, 212, 216, 214, the wiring patterns 211, 213, Reference numeral 212 denotes a wiring pattern on the surface of a substrate (not shown) on which the electromagnetic relays R1-1 and R2-1 are mounted as shown by solid lines in FIG. 27. The wiring patterns 214, 215 and 216 are shown in FIG. As shown by the dotted line in FIG.

  As described above, when designing the wiring pattern, it is necessary to route the wiring including the back side of the substrate in order to realize the insulation design, and it is necessary to use both sides of the substrate, which increases the board occupation area. As a result, there is a problem in that the space for placing other components on the board is sacrificed.

  The present invention has been made paying attention to such a situation, and its object is to have a low profile and a compact size, which can be mounted on a board with a low bulk, and an electromagnetic relay is mounted. It is possible to determine the arrangement of the fixed terminal foot and the movable terminal foot to match the design of the printed circuit board footprint, and the wiring pattern to be connected with the wiring pattern when implementing circuit redundancy as a safety relay It is an object of the present invention to provide an electromagnetic relay that is simple and easy to design, does not require a large board area, allows use of only one side of the board, and leaves a space for placing other components on the board.

To achieve the above object, an electromagnetic relay according to the present invention, a fixing spring, a fixed terminal having a fixed terminal foot provided continuously to the fixing spring, a movable spring, is provided continuously to the movable spring a movable terminal having a movable terminal foot portions, in a configuration has been opened and closed contacts, the switching contacts housed several outside the body, for operating switching a plurality of switching contacts by the movement of the movable body that round trip movement a conductive magnetic relays, each longitudinal fixing spring and the movable spring is parallel to the bottom surface of the envelope body, a plurality of switching contacts are arranged side by side in the moving direction of the moving body, the fixed terminal foot and movable terminal foot is spaced from each other in the direction perpendicular to the moving direction is characterized in that the outwardly projecting bottom or al envelope body. Here, the envelope body, for example, applicable is constituted by the cover and the case housing, and the bottom, for example, the cover corresponds.

With this configuration, the plurality of switching contacts have their fixed springs and movable springs arranged so that their longitudinal directions are parallel to the bottom surface of the outer casing, so that the electromagnetic relay has a low profile and is compact. Thus, it can be mounted on the substrate with low bulk.

In the electromagnetic relay of the present invention, the plurality of switching contacts are arranged in parallel in the moving direction of the moving body, and the fixed terminal foot portion and the movable terminal foot portion are in a direction orthogonal to the moving direction of the moving body. each other is separated, because you have to protrude on the bottom or al outwardly, determining the placement of the fixed terminal foot portion and the movable terminal foot portion adapted to the design of the footprint of the substrate on which the electromagnetic relay is mounted Is possible.

  In addition, when the electromagnetic relay is configured as a safety relay, the safety relay requires circuit duality due to safety standard requirements, and the circuit is duplicated by connecting the switching contacts of different electromagnetic relays. In order to implement circuit duplication by using two electromagnetic relays of the present invention, wiring pattern design for connecting two electromagnetic relays with wiring patterns becomes simple and easy, and in order to realize insulation design as in the past It is no longer necessary to route the wiring including the back side of the substrate. For this reason, a large board occupation area is not required, and only one surface of the board can be used, and a space for placing other components on the board can be left.

The electromagnetic relay according to the present invention is the electromagnetic relay according to the present invention described above, wherein the fixed terminal foot is provided on the front side of the fixed terminal lead portion connected to the fixed spring, and the movable terminal foot is the movable spring. The fixed terminal foot and the movable terminal foot are provided by setting the bending direction of the fixed terminal lead portion and the bending direction of the movable terminal lead portion to a predetermined direction. , in which they were spaced apart from each other in the direction perpendicular to the moving direction.

  With this configuration, the terminal lead portion can be bent in a predetermined direction, and the fixed terminal foot portion and the movable terminal foot portion can be separated from each other in a direction orthogonal to the moving direction of the moving body. For this reason, it becomes possible to determine the arrangement of the fixed terminal foot portion and the movable terminal foot portion according to the footprint design of the board on which the electromagnetic relay is mounted.

Further, the electromagnetic relay according to the present invention is the electromagnetic relay according to the present invention described above, in which a plurality of switching contacts are alternately arranged in two stages along the movement direction, and each switching contact as well as isolated by the insulating partition wall member, which fixed terminal foot portion and the movable terminal foot portion of each switching contact of the second stage, by penetrating the insulating partition wall member, is protruded on the bottom surface or al outwardly It is.

  With this configuration, in addition to having the arrangement configuration of the fixed terminal foot and the movable terminal foot according to the footprint design of the board on which the electromagnetic relay is mounted, the first-stage switching contact and the second-stage switching contact Is isolated by an insulating partition member, it is easy to optimize the insulation distance between the first-stage switching contact and the second-stage switching contact. In addition, since the switching contacts are alternately arranged in two stages along the moving direction of the moving body with the insulating partition wall member interposed therebetween, the moving body is compared with the case where all the same number of switching contacts are arranged in parallel in one stage. The moving direction can be made compact.

  In addition, when implementing circuit duplication as a safety relay, it is easy to design wiring patterns that connect with wiring patterns, making it possible to use only one side of the board by narrowing the board occupation area, and mounting other parts on the board You can leave a space for loading.

Further, the electromagnetic relay according to the present invention is the electromagnetic relay according to the present invention described above, wherein a plurality of second-stage switching contacts are mounted on the insulating partition wall member , and each second-stage switching contact is mounted on one surface portion thereof. And a plurality of first-stage switching contact mounting portions on which the first-stage switching contacts are mounted on the other surface, and a partition wall separating each of the second-stage switching contact mounting sections. A partition that separates each first stage switching contact mounting part is provided, each second stage switching contact is mounted on the second stage switching contact mounting part, and each first stage switching contact mounting part is mounted on the first stage switching contact mounting part. it's also form terminal unit fitted with a switching contact.

  With this configuration, each second-stage switching contact is mounted on the second-stage switching contact mounting section, each second-stage switching contact is attached to one surface of the insulating partition wall member, and each first-stage switching contact is one-stage. The terminal unit can be configured by mounting the first open / close contact on the other surface portion of the insulating partition member by mounting the first open / close contact on the other surface of the insulating partition member. Therefore, since the whole can be configured in a compact manner, it is easy to assemble parts. In addition, it becomes easy to optimize the insulation distance by the partition between the first-stage and second-stage switching contact mounting portions.

  Further, the electromagnetic relay according to the present invention is the electromagnetic relay according to the present invention described above, wherein the outer cover body is composed of a cover and a case, the through hole is provided in the cover, and the terminal unit is assembled to the cover. The fixed terminal foot and the movable terminal foot are passed through the through-hole portion and protrude outward from the cover, and the case is mounted on the cover so as to cover the terminal unit.

  With this configuration, the first-stage switching contacts are held by the insulating partition wall member and the cover, and the second-stage switching contacts are held by the insulating partition wall member and the case. The switching contact is securely held.

According to the electromagnetic relay according to the present invention, since the plurality of switching contacts are arranged with the fixed spring and the movable spring so that the respective longitudinal directions are parallel to the bottom surface of the outer casing, the electromagnetic relay has a low profile. And it becomes compact and can be mounted on a substrate with low bulk.

In the electromagnetic relay of the present invention, the plurality of switching contacts are arranged in parallel in the moving direction of the moving body, and the fixed terminal foot portion and the movable terminal foot portion are in a direction orthogonal to the moving direction of the moving body. each other is separated, because you have to protrude on the bottom or al outside of the envelope body, the fixed terminal foot and the arrangement of the movable terminal foot matching the design of the substrate footprint electromagnetic relay is mounted Can be determined.

  In addition, when the electromagnetic relay is configured as a safety relay, the safety relay requires circuit duality due to safety standard requirements, and the circuit is duplicated by connecting the switching contacts of different electromagnetic relays. In order to implement circuit duplication by using two electromagnetic relays of the present invention, wiring pattern design for connecting two electromagnetic relays with wiring patterns becomes simple and easy, and in order to realize insulation design as in the past It is no longer necessary to route the wiring including the back side of the substrate. For this reason, a large board occupation area is not required, and only one surface of the board can be used, and a space for placing other components on the board can be left.

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

  FIG. 1 shows a perspective view of an electromagnetic relay according to the present invention, FIG. 2 shows a perspective view seen from the lower surface side thereof, and FIG. 3 shows a perspective view of an exploded state thereof. In the description of the embodiment of the present invention, the front-rear direction, the left-right direction, and the up-down direction are set as shown for convenience.

  As shown in FIG. 3, the electromagnetic relay includes a cover 1 that is long in the left and right direction and narrowly molded in the front and back, a base 2 as an insulating isolation member that also serves as a terminal mounting member disposed on the cover 1, Multi-polar upper and lower switching contacts 3 and 4 assembled to the base 2 in two upper and lower stages, and a movable body for switching the switching contacts that can linearly reciprocate in the left-right direction, which is the longitudinal direction of the base 2 The card 5, the electromagnet block 6 assembled to the left end which is one side end in the longitudinal direction of the cover 1, and a fulcrum P along the vertical direction which is perpendicular to the cover 1 are pivotable. And a case 8 that is externally fitted to the cover 1 and is mounted on the cover 1 from above. Is configured On 2, it constitutes a terminal unit U at the lower switching contacts 3 and 4. Next, the detailed structure of each part will be described next.

  As shown in FIGS. 2, 3, and 10, the cover 1 has a first fixed terminal through-hole portion 14 </ b> A and a third movable terminal through-hole portion at a predetermined interval in the left-right direction that is the longitudinal direction thereof. 14B and the 5th movable terminal through-hole part 14C are formed. Further, the cover 1 is formed with a second fixed terminal through-hole portion 10A, a fourth fixed terminal through-hole portion 10B, and a sixth fixed terminal through-hole portion 10C at predetermined intervals in the left-right direction. Further, cover-side partition walls 11A, 11B, 11C, 11D, 11E, and 11F project from the inner surface 1a of the cover 1, and the second fixed terminal through-hole portion 10A is formed on the front end side of the cover-side partition wall 11D. The fourth fixed terminal through hole 10B is located on the front end side of the cover side partition wall 11E, and the sixth fixed terminal through hole 10C is located on the front end side of the cover side partition wall 11F. Yes.

  Further, notches 12A, 12B, 12C, and 12D are formed at predetermined intervals in the left-right direction of the cover 1 at the rear side edge (one side edge in the short direction) of the cover 1. Further, the cover 1 is formed with coil terminal through holes 15A and 15B at the left end thereof.

  As shown in FIGS. 11 and 12, the upper and lower switching contacts 3 and 4 that are constituent elements of the terminal unit U are arranged in parallel along the left-right direction (the moving direction of the card 5). The upper switching contact 3 that is the switching contact is a three-pole contact, that is, the first, third, and fifth contacts 3A, 3B, and 3C arranged in parallel on the left and right, and the first contact 3A on the left end is one set. Are normally closed circuits (normally closed contacts), and the center and right end contacts, that is, the third and fifth contacts 3B and 3C constitute two sets of normally open circuits (normally open contacts). The lower-stage switching contact 4 that is the first-stage switching contact is a three-pole contact, that is, the second, fourth, and sixth contacts 4A, 4B, and 4C arranged in parallel on the left and right. Constitutes an open circuit.

  As shown in FIGS. 11 to 13, the first contact 3A of the upper switching contact 3 is composed of a first fixed terminal 20A and a first movable terminal 21A, and the third contact 3B is connected to the third fixed terminal 20B. The fifth movable terminal 21B is constituted by the third movable terminal 21B, and the fifth contact 3C is constituted by the fifth fixed terminal 20C and the fifth movable terminal 21C.

  In addition, as shown in FIGS. 11, 12, and 17, the second contact 4A in the lower switching contact 4 is composed of a second fixed terminal 22A and a second movable terminal 23A, and the fourth contact 4B is the second contact 4B. The fourth fixed terminal 22B and the fourth movable terminal 23B are configured, and the sixth contact 4C is configured by the sixth fixed terminal 22C and the sixth movable terminal 23C.

  Further, as shown in FIG. 14, in the first contact 3 </ b> A, the first fixed terminal 20 </ b> A is fixed to the fixed side support portion 34 having the fixed terminal lead portion 37 and the fixed side support portion 34 by tightening. A fixed spring 35 and a fixed contact 36 fixed to the tip of the fixed spring 35 are provided, the tightenable portion is a press-fit portion 34F, and a fixed terminal foot portion 37A is provided at the front side of the fixed terminal lead portion 37. Is provided. That is, the fixed terminal lead portion 37 is protruded forward from the front end portion of the fixed side support portion 34 and bent in a crank shape, and is inclined downward and forward on the front side of the first bent portion 37a. The protruding second bent portion 37b has a fixed terminal foot portion 37A that is bent at a right angle downward in the front side of the second bent portion 37b. In FIG. 14, the movable contact 40 of the first movable terminal 21 </ b> A is shown separated from the fixed contact 36.

  As shown in FIG. 15, the first movable terminal 21 </ b> A of the first contact 3 </ b> A includes a movable side support portion 38 having a movable terminal lead portion 41 and a movable spring fixed to the movable side support portion 38 by tightening. 39 and a movable contact 40 fixed to the tip of the movable spring 39, the tightenable portion is a press-fit portion 38F, and a movable terminal foot portion 41A is provided on the front side of the movable terminal lead portion 41. It is. That is, the movable terminal lead portion 41 has a first bent portion 41a bent at a right angle with respect to the surface portion of the press-fit portion 38 at the rear end portion of the movable side support portion 38, and the movable terminal foot portion 41A is The first bent portion 41a is bent at a right angle downward in the front side.

  As shown in FIG. 16, the third fixed terminal 20 </ b> B of the third contact 3 </ b> B includes a fixed side support portion 24 having a fixed terminal lead portion 27, and a fixed spring fixed to the fixed side support portion 24 by tightening. 25 and a fixed contact 26 fixed to the tip of the fixed spring 25, the tightenable portion is a press-fit portion 24F, and a fixed terminal foot portion 27A is provided on the front side of the fixed terminal lead portion 27. It is. That is, the fixed terminal lead portion 27 has a first bent portion 27a bent at a right angle with respect to the surface portion of the fixed side support portion 24 at the rear end portion of the fixed side support portion 24, and the fixed terminal foot portion 27A. Is bent at a right angle downward in the front side of the first bent portion 27a. Accordingly, the fixed terminal foot portion 27 </ b> A is located on the side of the rear end portion of the fixed spring 25.

  Further, as shown in FIG. 16, the third movable terminal 21B of the third contact 3B includes a movable side support portion 30 having a movable terminal lead portion 33, and a movable spring fixed to the movable side support portion 30 by tightening. 31 and a movable contact 32 fixed to the tip of the movable spring 31, the tightenable portion is a press-fit portion 30 </ b> F, and a movable terminal foot portion 33 </ b> A is provided on the front side of the movable terminal lead portion 33. It is. That is, the movable terminal lead portion 33 is projected forward from the front end portion of the movable side support portion 30 and bent in a crank shape, and forwardly inclined after being inclined downward on the front side of the first bent portion 33a. The protruding second bent portion 33b is provided, and the movable terminal foot portion 33A is bent at a right angle downward in the front side of the second bent portion 33b. Therefore, the movable terminal foot portion 33 </ b> A is located on the side of the intermediate portion of the movable spring 31.

  Further, as shown in FIG. 16, the fifth contact 3C has the same configuration as the third contact 3B, and the fifth fixed terminal 20C in the fifth contact 3C has the same configuration as the third fixed terminal 20B. The movable terminal 21C has the same configuration as the third movable terminal 21B. Therefore, although the same reference numerals are given and description thereof is omitted, the fixed terminal foot of the fifth fixed terminal 20C is 27A-1, and the movable terminal foot of the fifth movable terminal 21C is 33A-1.

  In the lower switching contact 4 described above, as shown in FIGS. 18 and 19, the second fixed terminal 22A of the second contact 4A includes a fixed side support portion 42 having a fixed terminal lead portion 45, and the fixed side support portion. A fixed spring 43 fixed to the screw 42 by tightening, and a fixed contact 44 fixed to the tip of the fixed spring 43. The tightenable portion is a press-fit portion 42F. A fixed terminal foot 45A is provided on the front side. That is, the fixed terminal lead portion 45 has a first bent portion 45a that protrudes forward from the front end portion of the fixed-side support portion 42 and is bent into a crank shape, and a second bent portion that is bent into a crank shape at the front side of the first bent portion 45a. It has a bent portion 45b, and the fixed terminal foot portion 45A is bent at a right angle downward in the front side of the second bent portion 45b. Therefore, the fixed terminal foot portion 45 </ b> A is located on the side of the intermediate portion of the fixed spring 43.

  As shown in FIGS. 18 and 20, the second movable terminal 23A of the second contact 4A is fixed to the movable side support portion 46 having the movable terminal lead portion 49 and the movable side support portion 46 by tightening. The movable spring 47 and a fixed contact 48 fixed to the tip of the movable spring 47 are provided, the tightenable portion is a press-fit portion 46F, and a movable terminal foot portion is provided at the front side of the movable terminal lead portion 49. 49A is provided. That is, the movable terminal lead portion 49 has a first bent portion 49a bent at a right angle with respect to the surface portion of the movable side support portion 46 at the rear end portion of the movable side support portion 46, and the movable terminal foot portion 49A. Is bent at a right angle downward in the front side of the first bent portion 49a. Therefore, the movable terminal foot portion 49 </ b> A is located on the side of the rear end portion of the movable spring 47.

  Also, as shown in FIG. 18, the fourth contact 4B and the sixth contact 4C have the same configuration as the second contact 4A, and the fourth fixed terminal 22B and the sixth contact 4C in the fourth contact 4B. The terminal 22C has the same configuration as the second fixed terminal 22A, and the fourth movable terminal 23B and the sixth movable terminal 23C have the same configuration as the second movable terminal 23A. Accordingly, although the same reference numerals are given and description thereof is omitted, the fixed terminal foot of the fourth fixed terminal 22B is 45A-1, the fixed terminal foot of the sixth fixed terminal 22C is 45A-2, and the fourth movable terminal The movable terminal foot of 23B is 49A-1, and the movable terminal foot of the sixth movable terminal 23C is 49A-2. And the 1st-6th movable terminal 21A, 23A, 21B, 23B, 21C, 23C has the card latching | locking part 50 in the front-end | tip part (free end part) of each movable spring 31,39,47. .

  As shown in FIG. 8, the base 2 has a plate-like base body 51 that isolates the upper switching contact 3 and the lower switching contact 4, and a movable body is held on the front side of the base main body 51. A card holding portion 120 is formed, and a block attachment portion 110 is provided at the left end portion of the base main body 51.

  A first switching contact mounting portion 52A, a third switching contact mounting portion 52B, and a fifth switching contact mounting portion 52C are provided on the upper surface portion 51a, which is one surface portion of the base body 51, and these first switching contacts. The contact mounting part 52A, the third switching contact mounting part 52B, and the fifth switching contact mounting part 52C constitute a second stage switching contact mounting part. The first switching contact mounting portion 52A and the third switching contact mounting portion 52B are partitioned by partition walls 55 and 56, and the third switching contact mounting portion 52B and the fifth switching contact mounting portion 52C are partitioned by the partition wall 57. The space between the partition walls 55 and 56 in the base body 51 is an opening 58. A return spring mounting portion 59 is formed at the rear end portion of the opening 58.

  As shown in FIG. 8, the first switching contact mounting portion 52A includes a first fixed terminal mounting portion 53 and a first movable terminal mounting portion 54, and the first fixed terminal mounting portion 53 and the first movable terminal mounting. A partition wall 60 is provided between the portion 54. The first fixed terminal mounting portion 53 is provided with a terminal press-fit recess 61 and a fixed terminal insertion hole 62, and the first movable terminal mounting portion 54 is provided with a terminal press-fit recess 63 and a movable terminal insertion hole 64. is there.

  The third switching contact mounting part 52 </ b> B includes a third fixed terminal mounting part 65 and a third movable terminal mounting part 66, and a partition wall between the third movable terminal mounting part 65 and the third fixed terminal mounting part 66. 67 is provided. The third fixed terminal mounting portion 65 is provided with a terminal press-fit recess 68 and a fixed terminal insertion hole 71, and the third movable terminal mounting portion 66 is provided with a terminal press-fit recess 70 and a movable terminal insertion hole 69. is there.

  The fifth switching contact mounting part 52C includes a fifth movable terminal mounting part 72 and a fifth fixed terminal mounting part 73. Between the fifth movable terminal mounting part 72 and the fifth fixed terminal mounting part 73, A partition wall 74 is provided. The fifth movable terminal mounting portion 72 is provided with a terminal press-fit recess 75 and a movable terminal insertion hole 76, and the fifth fixed terminal mounting portion 73 is provided with a terminal press-fit recess 77 and a fixed terminal insertion hole 78. It is.

  Further, as shown in FIG. 9, a second switching contact mounting portion 79A, a fourth switching contact mounting portion 79B, and a sixth switching contact mounting portion 79C are provided on the lower surface portion 51b which is the other surface portion of the base body 51. It is provided. The second switching contact mounting part 79A, the fourth switching contact mounting part 79B, and the sixth switching contact mounting part 79C constitute a first stage switching contact mounting part. The second switching contact mounting portion 79A and the fourth switching contact mounting portion 79B are partitioned by partition walls 55A and 56A, and the fourth switching contact mounting portion 79B and the sixth switching contact mounting portion 79C are partitioned by a partition wall 57A. It is.

  Further, the second switching contact mounting portion 79A includes a second fixed terminal mounting portion 82 and a second movable terminal mounting portion 83. Between the second fixed terminal mounting portion 82 and the second movable terminal mounting portion 83, A partition wall 84 is provided. The second fixed terminal mounting portion 82 is provided with a terminal press-fit recess 85, and the second movable terminal mounting portion 83 is provided with a terminal press-fit recess 86.

  Further, the fourth switching contact mounting portion 79B includes a fourth fixed terminal mounting portion 87 and a fourth movable terminal mounting portion 88. Between the fourth fixed terminal mounting portion 87 and the 45th movable terminal mounting portion 88, A partition wall 89 is provided. The fourth fixed terminal mounting portion 87 is provided with a terminal press-fit recess 90, and the fourth movable terminal mounting portion 88 is provided with a terminal press-fit recess 91.

  The sixth switching contact mounting part 79C includes a sixth fixed terminal mounting part 92 and a sixth movable terminal mounting part 93. Between the sixth fixed terminal mounting part 92 and the sixth movable terminal mounting part 93, A partition wall 94 is provided. The sixth fixed terminal mounting portion 92 is provided with a terminal press-fit recess 95, and the sixth movable terminal mounting portion 93 is provided with a terminal press-fit recess 96.

  As shown in FIG. 9, the lower surface 51b of the base body 51 has a first terminal holding part 97 having a terminal insertion hole 62 opened and a second terminal holding part having a terminal insertion hole 71 opened. 98 and a third terminal holding part 99 having a terminal insertion hole 76 opened, and a rear edge of the lower surface part 51b of the base body 51 having a terminal insertion hole 64 opened. 4 terminal holding portion 100, fifth terminal holding portion 101 having terminal insertion hole 69 open and holding groove 101a, and sixth terminal holding having terminal insertion hole 78 open and holding groove 102a. A seventh terminal holding part 121 having a part 102 and a holding groove part 121a is projected.

  In the base 2 configured as described above, as shown in FIGS. 5 and 6, the first fixed terminal 20A is mounted on the first fixed terminal mounting portion 53 of the first switching contact mounting portion 52A. In this case, the press-fit portion 34F of the first fixed terminal 20A is press-fitted into the terminal press-fit recess 61, the fixed terminal foot portion 37A of the first fixed terminal 20A is inserted into the fixed terminal insertion hole 62, and the base 2 Projecting downward.

  Further, the first movable terminal 21A is mounted on the first movable terminal mounting portion 54 of the first switching contact mounting portion 52A. In this case, the press-fitting portion 38F of the first movable terminal 21A is press-fitted into the terminal press-fitting recess 63, and the movable terminal foot portion 41A of the first movable terminal 21A is inserted into the movable terminal insertion hole 64, It protrudes below the base 2.

  Further, the third fixed terminal 20B is mounted on the third fixed terminal mounting portion 66 of the third switching contact mounting portion 52B. In this case, the press-fit portion 24F of the third fixed terminal 20B is press-fitted into the terminal press-fit recess 68, and the fixed terminal foot portion 27A of the third fixed terminal 20B is inserted into the fixed terminal insertion hole 69, It protrudes below the base 2.

  Further, the third movable terminal 21B is mounted on the third movable terminal mounting portion 65 of the third switching contact mounting portion 52B. In this case, the press-fitting portion 30F of the third movable terminal 21B is press-fitted into the terminal press-fitting recess 70, and the movable terminal foot portion 33A of the third movable terminal 21B is inserted into the movable terminal insertion hole 71, It protrudes below the base 2.

  The fifth movable terminal 21C is mounted on the fifth movable terminal mounting portion 72 of the fifth switching contact mounting portion 52C. In this case, the press-fit portion 30F of the fifth movable terminal 21C is press-fitted into the terminal press-fit recess 75, and the movable terminal foot portion 33A-1 of the fifth movable terminal 21C is inserted into the movable terminal insertion hole 76. Projecting below the base 2.

  Further, the fifth fixed terminal 20C is mounted on the fifth fixed terminal mounting portion 73. In this case, the press-fit portion 24F of the fifth fixed terminal 20C is press-fitted into the terminal press-fit recess 77, and the fixed terminal foot portion 27A-1 of the fifth fixed terminal 20C is inserted into the fixed terminal insertion hole portion 78. Projecting below the base 2.

  Further, as shown in FIG. 7, the second fixed terminal 22A is mounted on the second fixed terminal mounting portion 82 of the second switching contact mounting portion 79A. In this case, the press-fit portion 42F of the second fixed terminal 22A is provided. The terminal press-fitting recess 85 is press-fitted, and the fixed terminal foot 45A of the second fixed terminal 22A protrudes below the base 2.

  Further, the second movable terminal mounting portion 83 is mounted with the second movable terminal 23A. In this case, the press-fit portion 46F of the second movable terminal 23A is press-fitted into the terminal press-fit recess 86, and the second movable terminal 23A. 49A of the movable terminal protrudes below the base 2 while being held in the holding groove 101a.

  The fourth fixed terminal 22B is mounted on the fourth fixed terminal mounting portion 87. In this case, the press-fit portion 42F of the fourth fixed terminal 22B is press-fitted into the terminal press-fit recess 90, and the fourth fixed terminal 22B is pressed. The fixed terminal leg 45A-1 of the terminal 22B protrudes below the base 2.

  Further, the fourth movable terminal mounting portion 88 is provided with the fourth movable terminal 23B. In this case, the press-fit portion 46F of the fourth movable terminal 23B is press-fitted into the terminal press-fit recess 91, and the fourth movable terminal 23B. The movable terminal leg 49A-1 protrudes below the base 2 while being held by the holding groove 102a.

  Further, the sixth fixed terminal mounting portion 92 is mounted with the sixth fixed terminal 22C. In this case, the press-fit portion 42F of the sixth fixed terminal 22C is press-fitted into the terminal press-fit recess 95, and the sixth fixed terminal A fixed terminal leg 45A-2 of the terminal 22C protrudes below the base 2.

  In addition, the sixth movable terminal 23C is mounted on the sixth movable terminal mounting portion 93. In this case, the press-fit portion 46F of the sixth movable terminal 23C is press-fitted into the terminal press-fit recess 96, and the sixth movable terminal 23C The movable terminal foot portion 49A-2 protrudes below the base 2 while being held in the holding groove portion 121.

  In the opening 58 between the partition walls 56 and 57 in the base main body 51, a return spring 103 having a card locking portion 103 </ b> A is disposed at the tip, and this return spring 103 is attached to the return spring attachment portion 59. .

  The electromagnet block 6 is attached to the block attaching portion 110. As shown in FIG. 4, the electromagnet block 6 has a coil 107 wound around a resin bobbin 106 fitted around the iron core 105, and yokes 108 of both poles are tightened and connected to both upper and lower ends of the iron core 105. The movable block 7 is arranged on the bent end side of each yoke 108. A pair of coil terminals 109 are connected to the coil 107 (see FIG. 5). The coil 107 has a small diameter and high performance.

  As shown in FIG. 4, the movable block 7 includes a block body 111 made of resin, an iron piece 112 made of a thick iron plate fitted and fixed thereto, and a square block-like shape that is adsorbed and fixed to the center of the iron piece 112. A permanent magnet 113, a magnetic shielding plate 114 made of a nonmagnetic metal attached to the top and bottom of the iron piece 112, and a metal fulcrum shaft 115 inserted through the block body 111 from above and below, Both end portions are rotatably fitted and supported in bearing holes 117 and bearing holes 118 of a bearing portion 116 provided in the base 2 (see FIGS. 5 and 7).

  Further, as shown in FIG. 5, the card 5 is guided and held on the base body 51 of the base 2 by the card holding unit 120 so as to be linearly slidable in the left-right direction. A card locking portion 50 at the tip of each of the movable springs 31, 39, 47 of the movable terminals 21A, 23A, 21B, 23B, 21C, and 23C and a card locking portion 103A at the tip of the return spring 103 are locked. The movable springs 31, 39, 47 are displaced by the reciprocating movement of the card 5 in the left-right direction so that the switching contacts are switched. The card 5 is always given a return force toward the electromagnet block 6 by the elastic force of the return spring 103.

  As described above, the terminal unit U assembled with the electromagnetic block 6, the movable block 7, and the card 5 is attached to the cover 1 as shown in FIGS. In this case, as shown in FIG. 2, the first terminal holding portion 97 faces the first fixed terminal through hole portion 14A of the cover 1, and the fixed terminal foot portion 37A is formed in the first fixed terminal through hole portion 14A. The second terminal holding portion 98 faces the third movable terminal through hole portion 14B of the cover 1, and the movable terminal foot portion 33A penetrates through the third movable terminal through hole portion 14B. The third terminal holding portion 99 faces the fifth movable terminal through hole portion 14C of the cover 1, and the movable terminal foot portion 33A-1 penetrates through the fifth movable terminal through hole portion 14C.

  Further, the fourth terminal holding portion 100 is inserted into the cutout portion 12A of the cover 1, the fifth terminal holding portion 101 is inserted into the cutout portion 12B of the cover 1, and the sixth terminal holding portion. 102 is inserted into the cutout portion 12 </ b> C of the cover 1, and the seventh terminal holding portion 121 is inserted into the cutout portion 12 </ b> D of the cover 1.

  Further, the fixed terminal legs 45A, 45A-1, and 45A-2 of the second fixed terminal 22A, the fourth fixed terminal 22B, and the sixth fixed terminal 22C are the second fixed terminal through-hole portions 10A and the fourth fixed holes of the cover 1, respectively. It passes through the fixed terminal through hole 10B and the sixth fixed terminal through hole 10C.

  A case 8 is detachably attached to the cover 1 so as to cover the terminal unit U assembled with the electromagnet block 6, the movable block 7, and the card 5.

  In this case, the electromagnet block 6 and the movable block 7 are arranged so that the virtual axis of the support shaft 115 centering on the fulcrum P of the movable block 7 extends in the vertical direction with respect to the surface portion of the cover 1. On the other hand, the fixed springs 25, 35, 43 of the first to sixth fixed terminals 20A, 22A, 20B, 22B, 20C, 22C constituting the upper and lower switching contacts 3, 4 are arranged in a tilted posture. The movable springs 31, 39, 47 of the first to sixth movable terminals 21A, 23A, 21B, 23B, 21C, 23C are also arranged so that their longitudinal directions are parallel to the surface portion of the cover 1, that is, 1 is arranged so as to be in a fallen posture.

  When the coil 107 is not energized, the movable block 7 is rotated clockwise by the return force of the return spring 103 as shown in FIG. The first contact 3A is closed, the third contact 3B and the fifth contact 3C are opened, and the lower opening / closing contact 4 is the second contact 4A, the fourth contact 4B, and the sixth contact 4C. Each of them is open.

  When the coil 107 is energized, the movable block 7 rotates counterclockwise against the return force of the return spring 103 and the card 5 is slid to the left, and the upper and lower contact points are opened. In the upper switching contact 3, the first contact 3A is opened, the third contact 3B and the fifth contact 3C are closed, and the lower switching contact 4 is the first switching contact 3A. Each of the 2-contact 4A, the fourth contact 4B, and the sixth contact 4C is closed.

  Also, when the electromagnetic relay is configured as a safety relay, the safety relay requires circuit duality due to safety standard requirements, and the circuit is duplicated by connecting the switching contacts of two electromagnetic relays. In this case, when the circuit is duplicated using two electromagnetic relays of the present invention, as shown in FIG. 22, the movable terminal feet 41A, 49A, the fixed terminal feet 27A, the movable terminal feet of one electromagnetic relay R1 49A-1, the fixed terminal foot portion 27A-1, and the movable terminal foot portion 49A-2 are connected to the wiring patterns 130 to 136, and the electromagnetic relay R1 (the fixed terminal foot portions 37A and 45A, the movable terminal foot portion 33A, Fixed terminal foot portion 45A-1, movable terminal foot portion 33A-1, fixed terminal foot portion 45A-2) and other electromagnetic relay R2 (movable terminal foot portions 41A, 49A, fixed terminal foot portion) 7A, movable terminal foot portion 49A-1, fixed terminal foot portion 27A-1, movable terminal foot portion 49A-2) are connected by wiring patterns 137 to 142, and fixed terminal foot portions 37A, 45A of the other electromagnetic relay R2. The wiring patterns 143 to 148 are connected to the movable terminal foot portion 33A, the fixed terminal foot portion 45A-1, the movable terminal foot portion 33A-1, and the fixed terminal foot portion 45A-2.

  In this case, since the wiring patterns 130 to 136, 137 to 142, and 143 to 148 are easily routed, the wiring patterns 130 to 136, 137 to 142, and 143 to 148 are mounted on the electromagnetic relays R1 and R2. This is done with a wiring pattern on the surface (not shown).

  Such a wiring pattern design is such that the first, third, fifth contacts 3A, 3B, 3C and the second, fourth, sixth contacts 4A, 4B, 4C are in the moving direction of the card 5 in the electromagnetic relays R1, R2. The fixed terminal legs 37A, 45A, 27A, 45A-1, 27A-1, 45A-2 and the movable terminal legs 41A, 49A, 33A, 49A-1 are arranged in parallel (in the longitudinal direction of the cover 1). , 33A-1 and 49A-2 are spaced apart from each other in the direction orthogonal to the moving direction of the card 5 (short direction of the cover 1) and protrude outward from the surface portion of the cover 1. Will be possible.

  As described above, according to the embodiment of the present invention, the first contact 3A, the third contact 3B, the fifth contact 3C, the second contact 4A, the fourth contact 4B, and the sixth contact 4C are the fixed spring 35, 25, 43 and movable springs 39, 31, 47 are arranged so that their longitudinal directions are parallel to the surface portion of the cover 1, so that the electromagnetic relay is low-profile and compact, and mounted on the board with low bulk. can do.

  In addition, the fixed terminal feet 37A, 45A, 27A, 45A-1, 27A-1, 45A-2 and the movable terminal feet 41A, 49A, 33A, 49A in accordance with the footprint design of the board on which the electromagnetic relay is mounted. -1,33A-1 and 49A-2 can be determined, and when the electromagnetic relay is configured as a safety relay, the safety relay requires circuit duality according to safety standard requirements, The circuit is duplicated by connecting the switching contacts of the relay. In this case, the wiring patterns 130 to 136, 137 to 142, and 143 are used to duplicate the circuit by using two electromagnetic relays of the present invention. In order to simplify the routing of 148, the wiring patterns 130 to 136, 137 to 142, 143 to 148 are connected to the electromagnetic relays R1, R2. Can be performed on the surface of the wiring pattern of the board mounted (not shown).

  In this way, since it is not necessary to route the wiring including the back side of the substrate, it is possible to use only one surface of the substrate by reducing the area occupied by the substrate and leave a space for placing other components on the substrate. .

  Further, according to the embodiment of the present invention, the fixed terminal lead portions 37, 27, 45 are bent in a predetermined direction with respect to the fixed side support portions 34, 24, 42, and the movable terminal lead portions 41, 33, 49. Are bent in a predetermined direction with respect to the movable side support portions 38, 30, 46, and the fixed terminal foot portions 37A, 45A, 27A, 45A-1, 27A-1, 45A-2 and the movable terminal foot portions 41A, 49A, 33A, 49A-1, 33A-1, and 49A-2 can be separated from each other in a direction orthogonal to the moving direction of the card 5.

  Further, according to the embodiment of the present invention, the first-stage switching contacts (second contact 4A, fourth contact 4B, and sixth contact 4C) and the second-stage switching contacts (first contact 3A, third contact 3B). And the fifth contact 3C) are separated from each other by the base 2, so that the first-stage switching contact (second contact 4A, fourth contact 4B and sixth contact 4C) and the second-stage switching contact (first contact 3A, It becomes easy to optimize the insulation distance from the third contact 3B and the fifth contact 3C). The first contact 3A, the third contact 3B, the fifth contact 3C, the second contact 4A, the fourth contact 4B, and the sixth contact 4C are alternately arranged in two stages along the moving direction of the card 5 with the base 2 interposed therebetween. Therefore, compared with the case where all the same number of switching contacts are arranged in parallel in a single stage, the card 5 can be configured more compactly in the moving direction.

  Further, according to the embodiment of the present invention, the fixed terminal feet 45A, 45A-1, and 45A-2 in the first stage fixed terminals (second, fourth, and sixth fixed terminals 22A, 22B, and 22C) are fixed. The movable terminal legs 49A, 49A-1, and 49A-2 are located on the side of the intermediate portion of the spring 43 and are located at the first stage movable terminals (second, fourth, and sixth movable terminals 23A, 23B, and 23C). Is located to the side of the rear end of the movable spring 47, so that the fixed terminal feet 45A, 45A-1, 45A-2 and the second contact 4A, the fourth contact 4B, and the sixth contact 4C in the first stage The movable terminal legs 49A, 49A-1, 49A-2 can be separated from each other in a direction orthogonal to the moving direction of the card 5. Further, the fixed terminal foot 37A in the first fixed terminal 20A, which is the second stage fixed terminal, is located on the side of the intermediate part of the fixed spring 35, and is movable in the first movable terminal 21A, which is the second stage movable terminal. The terminal foot portion 41A is located to the side of the rear end portion of the movable spring 39, and the fixed terminal foot portions 27A and 27A-1 in the third and fifth fixed terminals 20B and 20C, which are the second-stage fixed terminals, are fixed springs. 25, the movable terminal legs 33A and 33A-1 of the third and fifth movable terminals 21B and 21C, which are the second stage movable terminals, are located on the side of the intermediate portion of the movable spring 31. With the first contact 3A, the third contact 3B, and the fifth contact 3C in the second stage, the fixed terminal feet 37A, 27A, 27A-1 and the movable terminal feet 41A, 33A, 33A-1 In the direction perpendicular to the moving direction of the cards 5 It can be separated from each other.

  For this purpose, the fixed terminal foot portions 37A, 45A, 27A, 45A-1, 27A-1, 45A-2 and the movable terminal foot portions 41A, 49A, 33A in accordance with the footprint design of the board on which the electromagnetic relay is mounted. , 49A-1, 33A-1, and 49A-2 can be determined.

  Further, according to the embodiment of the present invention, the upper first, third, and fifth contacts 3A, 3B, and 3C are mounted on the first, third, and fifth switching contact mounting portions 52A, 52B, and 52C. The first, third, and fifth contacts 3A, 3B, and 3C are attached to the upper surface 51a of the base 2, and the lower second, fourth, and sixth contacts 4A, 4B, and 4C are connected to the second, fourth, and sixth, respectively. The terminal unit U can be configured by mounting on the switching contact mounting portions 79A, 79B, 79C and mounting the second, fourth and sixth contacts 4A, 4B, 4C to the lower surface portion 51b of the base 2. Therefore, since the whole can be configured in a compact manner, it is easy to assemble parts.

  The partition walls 55, 56, 57 between the first, third, and fifth switching contact mounting portions 52A, 52B, 52C and the partition walls 55A, 56A of the second, fourth, and sixth switching contact mounting portions 79A, 79B, 79C. 57A makes it easy to optimize the insulation distance.

  Further, according to the embodiment of the present invention, the lower second, fourth and sixth contacts 4A, 4B and 4C are held by the base 2 and the cover 1, and the upper first, third and fifth contacts. 3A, 3B and 3C are securely held by the base 2 and the case 8.

  According to the electromagnetic relay according to the present invention, it is low-profile and compact, can be mounted on a board with low bulk, and when wiring a circuit as a safety relay, wiring design connected with a wiring pattern is easy. Therefore, it is possible to use only one surface of the board by reducing the area occupied by the board, and to leave a space for placing other components on the board. This is useful for pole type electromagnetic relays.

1 is a perspective view of an electromagnetic relay according to the present invention. It is the perspective view which looked at the same electromagnetic relay from the lower surface side. It is a perspective view of the disassembled state of the electromagnetic relay. FIG. 3 is a schematic bottom view of the electromagnetic relay in which a part of the cover is broken and the electromagnetic block and the movable block are sectioned. It is the perspective view which looked at the whole electromagnetic relay of the state which removed the case from the front side. It is a top view of the electromagnetic relay in a state where a case is removed. It is a bottom view of the electromagnetic relay with the case removed. It is a top view of a base. It is a bottom view of a base. It is a perspective view of a cover. It is the perspective view which looked at the switching contact of the electromagnetic relay from the front side. It is the perspective view which looked at the switching contact of the electromagnetic relay from the back side. It is the perspective view which looked at the upper-stage (second stage) switching contact from the rear side. It is a perspective view of the 1st contact in the upper stage (2nd stage) switching contact. It is a perspective view of the movable terminal in the 1st contact. It is a perspective view of the 3rd and 5th contact in an upper stage (second stage) switching contact. It is the perspective view which looked at the switching contact of the lower stage (first stage) from the back side. It is a perspective view of the 2nd, 4th, and 6th contact in a lower stage (first stage) switching contact. It is a perspective view of the fixed terminal in the said 2nd, 4th, 6th contact. It is a perspective view of the movable terminal in the said 2nd, 4th, 6th contact. It is explanatory drawing for demonstrating the arrangement | sequence of a terminal leg part in the electromagnetic relay which concerns on this invention. It is explanatory drawing of a wiring pattern in case the circuit is duplicated using two electromagnetic relays of this invention. It is sectional drawing of the conventional electromagnetic relay. It is sectional drawing which follows the XX line of FIG. It is sectional drawing which follows the YY line of FIG.24 and FIG.25. It is explanatory drawing for demonstrating the arrangement | sequence of a terminal leg part in the conventional electromagnetic relay. It is explanatory drawing of the wiring pattern in the case of duplicating a circuit using two conventional electromagnetic relays.

Explanation of symbols

U terminal unit 1 Cover (cover)
2 Base (insulation isolation member)
3 Upper switching contact (second switching contact)
3A 1st contact 3B 3rd contact 3C 5th contact 4 Lower switching contact (first switching contact)
4A 2nd contact 4B 4th contact 4C 6th contact 5 Card (moving body)
6 Electromagnet Block 7 Movable Block 8 Case (Coating)
10A 2nd fixed terminal through-hole part (through-hole part)
10B 4th fixed terminal through-hole part (through-hole part)
10C 6th fixed terminal through-hole part (through-hole part)
11A, 11B, 11C, 11D, 11E, 11F Cover side partition 12A, 12B, 12C, 12D Notch 20A First fixed terminal 20B Third fixed terminal 20C Fifth fixed terminal 21A First movable terminal 21B Third movable terminal 21C 5th movable terminal 22A 2nd fixed terminal 22B 4th fixed terminal 22C 6th fixed terminal 23A 2nd movable terminal 23B 4th movable terminal 23C 6th movable terminal 24 Fixed side support part 25 Fixed spring 26 Fixed contact 27 Fixed terminal lead part 27A Fixed terminal foot portion 27A-1 Fixed terminal foot portion 30 Movable side support portion 31 Movable spring 33 Movable terminal lead portion 33A Movable terminal foot portion 33A-1 Movable terminal foot portion 34 Fixed side support portion 35 Fixed spring 36 Fixed contact 37 Fixed Terminal lead portion 37A Fixed terminal foot portion 38 Movable side support portion 39 Movable spring 40 Movable contact point 41 Movable terminal lead portion 41A Movable terminal foot portion 42 Fixed side support portion 43 Fixed spring 45 Fixed terminal lead portion 45A Fixed terminal foot portion 45A-1 Fixed terminal foot portion 45A-2 Fixed terminal foot portion 46 Movable side support portion 47 Movable spring 49 Movable terminal lead portion 49A Movable terminal foot portion 49A-1 Movable terminal foot portion 52A First switching contact mounting portion (second stage switching contact mounting portion)
52B Third switching contact mounting part (second stage switching contact mounting part)
52C Fifth switching contact mounting part (second stage switching contact mounting part)
53 1st fixed terminal mounting part 54 1st movable terminal mounting part 55, 56, 57 Partition 55A, 56A, 57A Partition 62 Fixed terminal insertion hole 64 Mobile terminal insertion hole 65 3rd fixed terminal mounting part 66 3rd movable terminal Mounting part 69 Fixed terminal insertion hole 72 Fifth movable terminal mounting part 73 Fifth fixed terminal mounting part 76 Movable terminal insertion hole part 78 Fixed terminal insertion hole part 79A Second switching contact mounting part (first stage switching contact mounting part)
79B Fourth switching contact mounting part (first stage switching contact mounting part)
79C 6th switching contact mounting part (first stage switching contact mounting part)
82 Second fixed terminal mounting portion 83 Second movable terminal mounting portion 87 Fourth fixed terminal mounting portion 88 Fourth movable terminal mounting portion 92 Sixth fixed terminal mounting portion 93 Sixth movable terminal mounting portion

Claims (5)

And fixing spring, a fixed terminal having a fixed terminal foot provided continuously to the fixing spring, a movable spring and a movable terminal having a movable terminal foot portion which is provided continuously on the movable spring, in the configured switching contact the provided, the switching contacts housed several outside the body, a conductive magnetic relay to operate switches the plurality of switching contacts by the movement of the movable body that round trip movement,
Each longitudinal direction before Symbol fixing spring and the movable spring is parallel to the bottom surface of the envelope body, the plurality of switching contacts are arranged side by side in the moving direction of the movable body, the fixed terminal foot and electromagnetic relay the movable terminal foot, characterized in that spaced apart from each other in a direction perpendicular to the moving direction to protrude to the outside of the bottom surface or found the envelope body. The fixed terminal foot portion is provided on a front side of a fixed terminal lead portion connected to the fixed spring, and the movable terminal foot portion is provided on a front side of a movable terminal lead portion connected to the movable spring, and By setting the bending direction of the fixed terminal lead portion and the bending direction of the movable terminal lead portion to a predetermined direction, the fixed terminal foot portion and the movable terminal foot portion are mutually in a direction perpendicular to the moving direction. electromagnetic relay according to claim 1, characterized in that is separated. The plurality of switching contacts are alternately arranged in two stages along the moving direction, and the first- stage switching contacts and the second- stage switching contacts are separated by an insulating partition member, and the second stage the fixed terminal foot portion and the movable terminal foot portion of each switching contacts of the by penetrating the insulating partition wall member, an electromagnetic relay according to claim 2, characterized in that projecting on the bottom surface or al outwardly . The insulating partition member includes a plurality of second-stage switching contact mounting portions on one surface of which the second-stage switching contacts are mounted, and a partition that isolates the second-stage switching contact mounting portions from each other. The other surface portion is provided with a plurality of first-stage switching contact mounting portions to which the first-stage switching contacts are mounted, and a partition wall for isolating each of the first-stage switching contact mounting portions. Te, with mounting the second stage switching contact mounting portion to the second stage of the switching contact, and this constituting a terminal unit equipped with a respective switching contacts of the first stage to the first stage switching contact mounting portion The electromagnetic relay according to claim 3. The outer cover is composed of a cover and a case, the cover is provided with a through-hole portion, the terminal unit is assembled to the cover, and the fixed terminal foot portion and the movable terminal foot portion are connected to the through-hole. by penetrating the parts projecting outwardly of the cover, the cover, the electromagnetic relay according to claim 1-4 which so as to cover the terminal unit characterized by being adapted to mount the casing.

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