JP2021057221A - relay - Google Patents

Abstract

To reduce the influence of the assembly accuracy on the operation of a relay.SOLUTION: A moving member holds a movable contact piece at a position between a first movable contact and a second movable contact. The moving member can move between the closed position and the open position. A spool includes a hole extending in the moving direction of the moving member. A movable iron core is arranged in the hole of the spool and is connected to the moving member. A base supports a first fixed terminal, a second fixed terminal, a contact block, and a coil block. The contact block and the coil block are assembled to the base in the first support direction perpendicular to the moving direction of the moving member.SELECTED DRAWING: Figure 2

Description

The present invention relates to a relay.

The plunger type relay includes a pair of fixed terminals, a contact block, and a coil block (see, for example, Patent Document 1). A fixed contact is connected to the fixed terminal. The contact block includes a movable contact piece, a pair of movable contacts, and a moving member. A pair of movable contacts are connected to a movable contact piece. The moving member supports the movable contact piece. The coil block includes a coil and a movable iron core. The movable iron core is connected to the moving member. The moving member moves when the movable iron core moves due to the magnetic force generated from the coil. As a result, the movable contact piece moves to open and close the movable contact and the fixed contact.

JP-A-2002-0426226

In the relay described above, the contact block and the coil block are housed in a housing. When assembling the relay, the contact block and the coil block are assembled to the housing in the moving direction of the moving member. Therefore, the accuracy of assembling the contact block and the coil block may affect the operation of the relay. For example, the distance of the gap between the movable contact and the fixed contact differs depending on the assembly accuracy, which may affect the operation of the relay. An object of the present invention is to reduce the influence of assembly accuracy on the operation of a relay.

The relay according to one aspect of the present invention includes a first fixed terminal, a first fixed contact, a second fixed terminal, a second fixed contact, a contact block, a coil block, and a base. The first fixed contact is connected to the first fixed terminal. The second fixed contact is connected to the second fixed terminal. The contact block includes a movable contact piece, a first movable contact, a second movable contact, and a moving member. The first movable contact is connected to the movable contact piece. The second movable contact is connected to the movable contact piece. The moving member holds the movable contact piece at a position between the first movable contact and the second movable contact. The moving member can move between the closed position and the open position. When the moving member is in the closed position, the first movable contact contacts the first fixed contact and the second movable contact contacts the second fixed contact. When the moving member is in the open position, the first movable contact is separated from the first fixed contact, and the second movable contact is separated from the second fixed contact.

The coil block includes a coil, a spool, and a movable iron core. The spool includes a hole extending in the moving direction of the moving member. A coil is wound around the spool. The movable iron core is arranged in the hole of the spool and is connected to the moving member. The base supports the first fixed terminal, the second fixed terminal, the contact block, and the coil block. The contact block and the coil block are assembled to the base in the first support direction perpendicular to the moving direction of the moving member.

In the relay according to this aspect, the contact block and the coil block are assembled to the base in the first support direction perpendicular to the moving direction of the moving member. Therefore, it is possible to reduce the influence of the assembly accuracy on the operation of the relay.

The first fixed terminal and the second fixed terminal may be assembled to the base in the first support direction. In this case, the influence of the assembly accuracy on the operation of the relay can be further reduced.

The base may include a first mounting hole and a second mounting hole. The first mounting hole may penetrate the base in the first support direction. The second mounting hole may penetrate the base in the first support direction. The first fixed terminal may be inserted into the first mounting hole. The second fixed terminal may be inserted into the second mounting hole. In this case, the first fixed terminal and the second fixed terminal can be assembled to the base in the first supporting direction perpendicular to the moving direction of the moving member.

The coil block may include a protrusion protruding in the first support direction. The base may include mounting holes extending in the first support direction. The protrusion may be inserted into the mounting hole. In this case, the coil block can be assembled to the base in the first support direction perpendicular to the moving direction of the moving member.

The moving member may include a connecting portion connected to the movable iron core. The connection may include a hole and a groove. The hole may be opened toward the first support direction. The groove may communicate with the hole and extend in a second support direction opposite to the first support direction. The movable iron core may include a shaft portion and a head portion. The shaft portion may be arranged in the groove. The head portion may be arranged in the hole and locked to the connection portion. In this case, by moving the moving member in the first support direction with respect to the movable iron core, the head portion of the movable iron core is arranged in the hole. Therefore, by assembling the moving member in the first support direction, the connecting portion of the moving member can be connected to the movable iron core.

The relay may further include a return spring. The return spring may be arranged between the coil block and the moving member. The moving member may include a mounting portion to which the return spring is mounted. The return spring may be attached to the attachment portion in the first support direction. In this case, the return spring can be assembled to the moving member in the first support direction.

The mounting portion may include protrusions. The protrusion may protrude from the moving member toward the coil block. The protrusion may include a tapered surface. The tapered surface may be inclined so that the height of the protrusion becomes lower toward the second support direction opposite to the first support direction. In this case, the tapered surface facilitates the assembly of the return spring to the moving member.

The moving member may include a connecting portion connected to the movable iron core. The relay may further include a first return spring and a second return spring. The first return spring may be located in the first lateral direction with respect to the connecting portion. The first lateral direction is a direction perpendicular to the first support direction and the moving direction. The first return spring may be arranged between the coil block and the moving member. The second return spring may be located in the second lateral direction with respect to the connecting portion. The second lateral direction is the direction opposite to the first lateral direction. The second return spring may be arranged between the coil block and the moving member.

The moving member may include a support portion that supports the movable contact piece. The movable contact piece may extend from the support portion in the first lateral direction and the second lateral direction. The support portion may extend from the movable contact piece toward the base in the first support direction. The support may be arranged on the base. In this case, the moving member can be assembled to the base in the first support direction.

The base may include a first wall portion. The first wall portion may extend in the second support direction opposite to the first support direction. The first wall portion may face the support portion in the moving direction. In this case, the first wall portion suppresses the fall of the support portion. Thereby, the moving member can be operated stably.

The base may further include a second wall portion. The second wall portion may be arranged away from the first wall portion in the moving direction. The support portion may be arranged between the first wall portion and the second wall portion. In this case, the second wall portion suppresses the fall of the support portion. Thereby, the moving member can be operated more stably.

According to the present invention, it is possible to reduce the influence of the assembly accuracy on the operation of the relay.

It is a perspective view of the relay which concerns on embodiment. It is an exploded perspective view of a relay. It is an exploded perspective view of a relay. It is a vertical sectional view of a relay. It is a top view of the relay when the moving member is in an open position. It is the top view of the relay when the moving member is a closed position. It is a perspective view of a base. It is a perspective view of a base. It is a perspective view of a moving member and its periphery. It is a vertical sectional view of the 1st mounting part.

Hereinafter, the relay 1 according to the embodiment will be described with reference to the drawings. FIG. 1 is a perspective view of the relay 1 according to the embodiment. 2 and 3 are exploded perspective views of the relay 1. FIG. 4 is a vertical cross-sectional view of the relay 1. 5 and 6 are top views of the relay 1.

The relay 1 includes a contact block 2, a housing 3, a coil block 4, a first fixed terminal 13, and a second fixed terminal 14. The contact block 2 and the coil block 4 are arranged in the housing 3. The housing 3 includes a base 11 and a case 12. The base 11 and the case 12 are made of, for example, resin. In FIG. 1, the case 12 is omitted. The base 11 supports the first fixed terminal 13, the second fixed terminal 14, the contact block 2, and the coil block 4.

In the present embodiment, the moving direction (Y1, Y2), the supporting direction (Z1, Z2), and the lateral direction (X1, X2) are defined as follows. The moving directions (Y1, Y2) are the directions in which the contact block 2 and the coil block 4 are aligned with each other. The moving directions (Y1, Y2) include a first moving direction (Y1) and a second moving direction (Y2). The first moving direction (Y1) is a direction from the contact block 2 toward the coil block 4. The second moving direction (Y2) is the direction opposite to the first moving direction (Y1). The second moving direction (Y2) is a direction from the coil block 4 toward the contact block 2.

The support direction (Z1, Z2) is a direction perpendicular to the movement direction (Y1, Y2). The support directions (Z1, Z2) are directions in which the base 11 and the contact block 2 are aligned with each other. The support directions (Z1, Z2) include a first support direction (Z1) and a second support direction (Z2). The first support direction (Z1) is a direction from the contact block 2 toward the base 11. The second support direction (Z2) is the direction opposite to the first support direction (Z1). The second support direction (Z2) is a direction from the base 11 toward the contact block 2. Alternatively, the support directions (Z1, Z2) may be the directions in which the base 11 and the coil block 4 are aligned with each other.

The lateral direction (X1, X2) is a direction perpendicular to the moving direction (Y1, Y2) and the supporting direction (Z1, Z2). The lateral direction (X1, X2) includes a first lateral direction (X1) and a second lateral direction (X2). The second lateral direction (X2) is the opposite direction to the first lateral direction (X1).

The first fixed terminal 13 and the second fixed terminal 14 are formed of a conductive material such as copper. The first fixed terminal 13 and the second fixed terminal 14 extend in the supporting directions (Z1, Z2), respectively. The first fixed terminal 13 and the second fixed terminal 14 are arranged apart from each other in the lateral direction (X1, X2).

7 and 8 are perspective views of the base 11. The base 11 includes a first mounting hole 71 and a second mounting hole 72. The first mounting hole 71 and the second mounting hole 72 penetrate the base 11 in the first support direction (Z1). The first fixed terminal 13 is inserted into the first mounting hole 71. As a result, the first fixed terminal 13 is fixed to the base 11. The tip of the first fixed terminal 13 projects outward from the base 11. The second fixed terminal 14 is inserted into the second mounting hole 72. As a result, the second fixed terminal 14 is fixed to the base 11. The tip of the second fixed terminal 14 projects outward from the base 11.

The first fixed contact 21 and the third fixed contact 23 are connected to the first fixed terminal 13. The first fixed contact 21 and the third fixed contact 23 are arranged apart from each other in the support direction (Z1, Z2) at the first fixed terminal 13. The second fixed contact 22 and the fourth fixed contact 24 are connected to the second fixed terminal 14. The second fixed contact 22 and the fourth fixed contact 24 are arranged apart from each other in the support direction (Z1, Z2) at the second fixed terminal 14. The first to fourth fixed contacts 21-24 are made of a conductive material such as silver or copper.

The contact block 2 includes a first movable contact piece 15, a second movable contact piece 16, and a moving member 17. The first movable contact piece 15 and the second movable contact piece 16 extend in the lateral direction (X1, X2). The first movable contact piece 15 and the second movable contact piece 16 are separate bodies from each other. The first movable contact piece 15 and the second movable contact piece 16 are arranged apart from each other in the support direction (Z1, Z2). The first movable contact piece 15 is arranged between the second movable contact piece 16 and the base 11 in the support directions (Z1, Z2). The first movable contact piece 15 and the second movable contact piece 16 are formed of a conductive material such as copper.

The first movable contact 31 and the second movable contact 32 are connected to the first movable contact piece 15. The first movable contact 31 and the second movable contact 32 are arranged apart from each other in the lateral direction (X1, X2). The first movable contact 31 is arranged so as to face the first fixed contact 21. The second movable contact 32 is arranged so as to face the second fixed contact 22.

The third movable contact 33 and the fourth movable contact 34 are connected to the second movable contact piece 16. The third movable contact 33 and the fourth movable contact 34 are arranged apart from each other in the lateral direction (X1, X2). The third movable contact 33 is arranged so as to face the third fixed contact 23. The fourth movable contact 34 is arranged so as to face the fourth fixed contact 24. The first to fourth movable contacts 31-34 are made of a conductive material such as silver or copper.

The moving member 17 is connected to the first movable contact piece 15 and the second movable contact piece 16. The moving member 17 is made of an insulating material such as resin. The moving member 17 can move between the closed position and the open position. In FIGS. 1, 4, and 5, the moving member 17 is located in the open position. When the moving member 17 is in the open position, the movable contacts 31-34 are separated from the fixed contacts 21-24, respectively. In FIG. 6, the moving member 17 is located in the closed position. When the moving member 17 is in the closed position, the movable contacts 31-34 come into contact with the fixed contacts 21-24, respectively.

The coil block 4 moves the first movable contact piece 15 and the second movable contact piece 16 by an electromagnetic force. The coil block 4 moves the first movable contact piece 15 and the second movable contact piece 16 in the first moving direction (Y1) and the second moving direction (Y2). The first moving direction (Y1) is the direction in which the movable contact 31-34 comes into contact with the fixed contact 21-24 in the moving direction (Y1, Y2). The second moving direction (Y2) is a direction in which the movable contact 31-34 is separated from the fixed contact 21-24 in the moving direction (Y1, Y2). The coil block 4 includes a coil 61, a spool 62, a movable iron core 63, a fixed iron core 64, and a yoke 65.

The coil 61 is wound around the spool 62. The axis of the coil 61 extends in the moving direction (Y1, Y2). The coil 61 is connected to the coil terminals 66 and 67. As shown in FIGS. 2 and 3, the coil terminals 66 and 67 project from the coil block 4 in the first support direction (Z1). As shown in FIG. 8, the base 11 includes mounting holes 68, 69. The mounting holes 68 and 69 penetrate the base 11 in the first support direction (Z1). The coil terminals 66 and 67 are inserted into the mounting holes 68 and 69, respectively.

As shown in FIG. 4, the spool 62 includes a hole 621 extending in the moving direction (Y1, Y2). At least a part of the movable iron core 63 is arranged in the hole 621 of the spool 62. The movable iron core 63 is provided so as to be movable in the first moving direction (Y1) and the second moving direction (Y2). The fixed iron core 64 is arranged in the hole 621 of the spool 62. The fixed iron core 64 is arranged so as to face the movable iron core 63 in the moving directions (Y1, Y2). When the coil 61 is energized, it generates an electromagnetic force that moves the movable iron core 63 in the first moving direction (Y1).

The movable iron core 63 is connected to the moving member 17. The first movable contact piece 15 and the movable iron core 63 are electrically insulated by a moving member 17. The second movable contact piece 16 and the movable iron core 63 are electrically insulated by a moving member 17. The movable iron core 63 moves integrally with the moving member 17 in the moving directions (Y1, Y2). The movable iron core 63 moves in the first moving direction (Y1) according to the magnetic force generated from the coil 61. With the movement of the movable iron core 63, the moving member 17 moves to the closed position. As the moving member 17 moves, the first movable contact piece 15 and the second movable contact piece 16 move in the first moving direction (Y1) or the second moving direction (Y2).

The yoke 65 is arranged so as to surround the coil 61. The yoke 65 is arranged on a magnetic circuit composed of the coil 61. The yoke 65 includes a first yoke 73, a second yoke 74, a third yoke 75, and a fourth yoke 76. The first yoke 73 and the second yoke 74 extend in the lateral direction (X1, X2) and the support direction (Z1, Z2). The first yoke 73 and the second yoke 74 face the coil 61 in the moving directions (Y1, Y2). The coil 61 is located between the first yoke 73 and the second yoke 74 in the moving directions (Y1, Y2). The first yoke 73 faces the moving member 17 in the moving directions (Y1, Y2). The second yoke 74 is connected to the fixed iron core 64.

The third yoke 75 and the fourth yoke 76 extend in the moving direction (Y1, Y2) and the supporting direction (Z1, Z2). The third yoke 75 and the fourth yoke 76 face the coil 61 in the lateral direction (X1, X2). The coil 61 is located between the third yoke 75 and the fourth yoke 76 in the lateral direction (X1, X2).

As shown in FIG. 3, the coil block 4 includes a plurality of protrusions 81-84. The plurality of projecting portions 81-84 project from the coil block 4 in the first support direction (Z1). Specifically, the yoke 65 includes a plurality of protrusions 81-84. The plurality of protrusions 81-84 include the first to fourth protrusions 81-84. The first protruding portion 81 projects from the first yoke 73 in the first supporting direction (Z1). The second protruding portion 82 protrudes from the second yoke 74 in the first supporting direction (Z1). The third protruding portion 83 projects from the third yoke 75 in the first supporting direction (Z1). The fourth protruding portion 84 projects from the fourth yoke 76 in the first supporting direction (Z1).

As shown in FIGS. 7 and 8, the base 11 includes a plurality of mounting holes 85-88. The plurality of mounting holes 85-88 penetrate the base 11 in the first support direction (Z1). The plurality of mounting holes 85-88 are arranged at positions corresponding to the plurality of protrusions 81-84. The plurality of protrusions 81-84 are inserted into the plurality of mounting holes 85-88, respectively. Specifically, the plurality of mounting holes 85-88 include first to fourth mounting holes 85-88. The first protruding portion 81 is inserted into the first mounting hole 85. The second protruding portion 82 is inserted into the second mounting hole 86. The third protrusion 83 is inserted into the third mounting hole 87. The fourth protrusion 84 is inserted into the fourth mounting hole 88. As a result, the coil block 4 is fixed to the base 11.

FIG. 9 is a perspective view of the moving member 17 and its surroundings. The moving member 17 includes a support portion 25, a connecting portion 26, and a connecting portion 27. The support portion 25 supports the first movable contact piece 15 and the second movable contact piece 16. The connecting portion 26 is connected to the movable iron core 63. The connecting portion 27 is located between the supporting portion 25 and the connecting portion 26. The connecting portion 27 connects the supporting portion 25 and the connecting portion 26. The connecting portion 27 extends in the moving direction (Y1, Y2).

The support portion 25 extends in the support direction (Z1, Z2). The support portion 25 extends from the first movable contact piece 15 toward the base 11 in the first support direction (Z1). As shown in FIG. 4, the support portion 25 extends from the second movable contact piece 16 toward the top surface 121 of the case 12 in the second support direction (Z2). The support portion 25 includes a first support hole 28, a second support hole 29, and a partition wall 30. The first movable contact piece 15 is arranged in the first support hole 28. The first movable contact piece 15 is supported by a support portion 25 between the first movable contact 31 and the second movable contact 32. The first movable contact piece 15 extends from the support portion 25 in the first lateral direction (X1) and the second lateral direction (X2).

The second movable contact piece 16 is arranged in the second support hole 29. The second movable contact piece 16 is supported by the support portion 25 between the third movable contact 33 and the fourth movable contact 34. The second movable contact piece 16 extends from the support portion 25 in the first lateral direction (X1) and the second lateral direction (X2). The partition wall 30 partitions the first support hole 28 and the second support hole 29. The partition wall 30 is arranged between the first movable contact piece 15 and the second movable contact piece 16.

The moving member 17 includes a first member 17a and a second member 17b. The first member 17a and the second member 17b are separate bodies from each other. The first member 17a includes a connecting portion 27, a part of the supporting portion 25, and a connecting portion 26. The second member 17b includes a part of the support portion 25. The first support hole 28 and the second support hole 29 are provided between the first member 17a and the second member 17b.

The support portion 25 includes a first end portion 35 and a second end portion 36. The first end portion 35 is an end portion of the support portion 25 in the first support direction (Z1). The second end portion 36 is an end portion of the support portion 25 in the second support direction (Z2). The first end 35 is arranged on the base 11. The second end portion 36 is arranged close to the top surface 121 of the case 12. The support portion 25 is supported by the base 11 in the support directions (Z1, Z2).

The contact block 2 includes a first contact spring 51 and a second contact spring 52. The first contact spring 51 is arranged between the first movable contact piece 15 and the support portion 25. The first contact spring 51 is arranged in the first support hole 28. With the first movable contact 31 in contact with the first fixed contact 21 and the second movable contact 32 in contact with the second fixed contact 22, the first contact spring 51 holds the first movable contact piece 15. Press toward the first fixed terminal 13 and the second fixed terminal 14. The first contact spring 51 is a coil spring, and is in a state of natural length when the moving member 17 is in the open position. The first movable contact piece 15 is connected to the moving member 17 via the first contact spring 51.

The second contact spring 52 is arranged between the second movable contact piece 16 and the second support portion 25. The second contact spring 52 is arranged in the second support hole 29. The second contact spring 52 holds the second movable contact piece 16 in a state where the third movable contact 33 is in contact with the third fixed contact 23 and the fourth movable contact 34 is in contact with the fourth fixed contact 24. Press toward the first fixed terminal 13 and the second fixed terminal 14. The second contact spring 52 is a coil 61 spring, and is in a state of natural length when the moving member 17 is in the open position. The second movable contact piece 16 is connected to the moving member 17 via the second contact spring 52.

The connecting portion 26 extends in the lateral direction (X1, X2). As shown in FIG. 9, the connecting portion 26 includes a core connecting portion 37, a first mounting portion 38, and a second mounting portion 39. The core connecting portion 37 is located between the first mounting portion 38 and the second mounting portion 39. The core connecting portion 37 is connected to the connecting portion 27. As shown in FIGS. 4 and 9, the core connection 37 includes a hole 43 and a groove 44. The hole 43 is opened toward the first support direction (Z1). The groove 44 communicates with the hole 43 and extends in the second support direction (Z2). The width of the groove 44 is narrower than the width of the hole 43. The movable iron core 63 includes a shaft portion 77 and a head portion 78. The shaft portion 77 and the head portion 78 project from the coil block 4 in the second moving direction (Y2). The width of the head portion 78 is larger than the width of the shaft portion 77. The width of the head portion 78 is larger than the width of the groove 44. The shaft portion 77 is arranged in the groove 44. The head portion 78 is arranged in the hole 43. As a result, the moving member 17 is prevented from coming off with respect to the movable iron core 63 in the moving direction (Y1, Y2).

The first mounting portion 38 extends from the core connecting portion 37 in the first lateral direction (X1). The first mounting portion 38 includes a first protrusion 45. The first protrusion 45 projects from the first mounting portion 38 toward the coil block 4. FIG. 10 is a vertical cross-sectional view of the first mounting portion 38. The first protrusion 45 includes a first tapered surface 47. The first tapered surface 47 is inclined so that the height of the first protrusion 45 becomes lower toward the second support direction (Z2). The second mounting portion 39 extends from the core connecting portion 37 in the second lateral direction (X2). The second mounting portion 39 includes a second protrusion 46. The second protrusion 46 projects from the second mounting portion 39 toward the coil block 4. Like the first protrusion 45, the second protrusion 46 includes a second tapered surface 48. The second tapered surface 48 is inclined so that the height of the second protrusion 46 becomes lower toward the second support direction (Z2).

The relay 1 includes a first return spring 53 and a second return spring 54. The first return spring 53 and the second return spring 54 are arranged between the moving member 17 and the coil block 4. The first return spring 53 is located in the first lateral direction (X1) with respect to the connecting portion 26. The second return spring 54 is located in the second lateral direction (X2) with respect to the connecting portion 26. In other words, the connecting portion 26 is located between the first return spring 53 and the second return spring 54 in the lateral direction (X1, X2). The first return spring 53 and the second return spring 54 urge the moving member 17 in the second moving direction (Y2).

A first return spring 53 is attached to the first protrusion 45. A second return spring 54 is attached to the second protrusion 46. As described above, the first protrusion 45 is provided with the first tapered surface 47. The second protrusion 46 is provided with a second tapered surface 48. Therefore, the first return spring 53 can be easily attached to the first protrusion 45 in the first support direction (Z1). Further, the second return spring 54 can be easily attached to the second protrusion 46 in the first support direction (Z1).

As shown in FIGS. 4, 7, and 8, the base 11 has a bottom surface 55, a first wall portion 56, a second wall portion 57, a third wall portion 58, and a fourth wall portion 59. Including. The bottom surface 55 supports the contact block 2 and the coil block 4 in the support directions (Z1, Z2). The bottom surface 55 is located in the first support direction (Z1) with respect to the contact block 2 and the coil block 4. The first wall portion 56, the second wall portion 57, the third wall portion 58, and the fourth wall portion 59 extend from the bottom surface 55 in the second support direction (Z2).

The first wall portion 56 and the second wall portion 57 are arranged apart from each other in the moving direction (Y1, Y2). The first wall portion 56 and the second wall portion 57 face the support portion 25 of the moving member 17 in the moving direction (Y1, Y2). The support portion 25 is located between the first wall portion 56 and the second wall portion 57 in the moving directions (Y1, Y2). The first wall portion 56 and the second wall portion 57 extend in the lateral direction (X1, X2). The first wall portion 56 overlaps with the support portion 25 when viewed from the moving directions (Y1, Y2). The first wall portion 56 is located in the second moving direction (Y2) with respect to the support portion 25. The first wall portion 56 extends in the second support direction (Z2) to at least the height of the central portion of the support portion 25. The first wall portion 56 extends in the second support direction (Z2) to a position between the first movable contact piece 15 and the second movable contact piece 16. The first wall portion 56 overlaps with the partition wall 30 when viewed from the moving directions (Y1, Y2).

The first wall portion 56 includes a first guide portion 91 and a second guide portion 92. The first guide portion 91 and the second guide portion 92 extend in the support direction (Z1, Z2). The first guide portion 91 and the second guide portion 92 project from the first wall portion 56 in the first moving direction (Y1). The first guide portion 91 and the second guide portion 92 are arranged apart from each other in the lateral direction (X1, X2). The moving member 17 is in the open position, and the support portion 25 is located between the first guide portion 91 and the second guide portion 92.

The second wall portion 57 overlaps with the support portion 25 when viewed from the moving directions (Y1, Y2). The second wall portion 57 is located in the first moving direction (Y1) with respect to the support portion 25. The second wall portion 57 is lower than the first wall portion 56 in the support directions (Z1, Z2). Seen from the support direction (Z1, Z2), the second wall portion 57 overlaps with the connecting portion 27. The second wall portion 57 includes a third guide portion 93 and a fourth guide portion 94. The third guide portion 93 and the fourth guide portion 94 extend in the support direction (Z1, Z2). The third guide portion 93 and the fourth guide portion 94 project from the second wall portion 57 in the second moving direction (Y2). The third guide portion 93 and the fourth guide portion 94 are arranged apart from each other in the lateral direction (X1, X2). The moving member 17 is in the closed position, and the support portion 25 is located between the third guide portion 93 and the fourth guide portion 94.

The third wall portion 58 and the fourth wall portion 59 face the support portion 25 in the lateral direction (X1, X2). The support portion 25 is located between the first wall portion 56 and the second wall portion 57 in the lateral direction (X1, X2). The third wall portion 58 and the fourth wall portion 59 extend in the moving directions (Y1, Y2). The third wall portion 58 and the fourth wall portion 59 are lower than the first wall portion 56 and the second wall portion 57 in the support direction (Z1, Z2). The third wall portion 58 and the fourth wall portion 59 overlap with the first movable contact piece 15 and the second movable contact piece 16 when viewed from the support directions (Z1 and Z2). The third wall portion 58 overlaps with the support portion 25 when viewed from the lateral direction (X1, X2). The third wall portion 58 is located in the first lateral direction (X1) with respect to the support portion 25. The fourth wall portion 59 overlaps with the support portion 25 when viewed from the lateral direction (X1, X2). The fourth wall portion 59 is located in the second lateral direction (X2) with respect to the support portion 25.

The base 11 includes a first recess 95 and a second recess 96. The first recess 95 and the second recess 96 have a shape recessed in the first support direction (Z1). The first recess 95 is located in the first support direction (Z1) with respect to the first movable contact 31. Seen from the support directions (Z1, Z2), the first recess 95 overlaps the first movable contact 31 and the third movable contact 33. The second recess 96 is located in the first support direction (Z1) with respect to the second movable contact 32. Seen from the support directions (Z1, Z2), the second recess 96 overlaps the second movable contact 32 and the fourth movable contact 34.

The base 11 includes a third recess 97 and a fourth recess 98. The third recess 97 and the fourth recess 98 have a shape recessed in the first support direction (Z1). The third recess 97 is located in the first support direction (Z1) with respect to the first fixed contact 21. Seen from the support directions (Z1, Z2), the third recess 97 overlaps the first fixed contact 21 and the third fixed contact 23. The fourth recess 98 is located in the first support direction (Z1) with respect to the second fixed contact 22. Seen from the support directions (Z1, Z2), the fourth recess 98 overlaps the second fixed contact 22 and the fourth fixed contact 24.

Next, the operation of the relay 1 will be described. When the coil 61 is not energized, the coil block 4 is not excited. In this case, the moving member 17 is pressed in the second moving direction (Y2) by the elastic force of the return springs 53 and 54 together with the movable iron core 63, and the moving member 17 is located at the open position shown in FIG. .. In this state, the first movable contact piece 15 and the second movable contact piece 16 are also pressed in the second moving direction (Y2) via the moving member 17. Therefore, when the moving member 17 is in the open position, the first movable contact 31 and the second movable contact 32 are separated from the first fixed contact 21 and the second fixed contact 22. Similarly, when the moving member 17 is in the open position, the third movable contact 33 and the fourth movable contact 34 are separated from the third fixed contact 23 and the fourth fixed contact 24.

When the coil 61 is energized, the coil block 4 is excited. In this case, due to the electromagnetic force of the coil 61, the movable iron core 63 moves in the first moving direction (Y1) against the elastic force of the return springs 53 and 54. As a result, the moving member 17, the first movable contact piece 15, and the second movable contact piece 16 all move in the first moving direction (Y1). Therefore, as shown in FIG. 6, the moving member 17 moves to the closed position. As a result, the moving member 17 is in the closed position, and the first movable contact 31 and the second movable contact 32 come into contact with the first fixed contact 21 and the second fixed contact 22, respectively. Similarly, when the moving member 17 is in the closed position, the third movable contact 33 and the fourth movable contact 34 come into contact with the third fixed contact 23 and the fourth fixed contact 24, respectively. As a result, the first movable contact piece 15 and the second movable contact piece 16 are electrically connected to the first fixed terminal 13 and the second fixed terminal 14.

When the current to the coil 61 is stopped and degaussed, the movable iron core 63 is pressed in the second moving direction (Y2) by the elastic force of the return springs 53 and 54. As a result, the moving member 17, the first movable contact piece 15, and the second movable contact piece 16 all move in the second moving direction (Y2). Therefore, as shown in FIG. 5, the moving member 17 moves to the open position. As a result, when the moving member 17 is in the open position, the first movable contact 31 and the second movable contact 32 are separated from the first fixed contact 21 and the second fixed contact 22. Similarly, when the moving member 17 is in the open position, the third movable contact 33 and the fourth movable contact 34 are separated from the third fixed contact 23 and the fourth fixed contact 24.

In the relay 1 according to the present embodiment described above, the coil block 4 is fixed to the base 11 by inserting the protruding portion 81-84 of the coil block 4 into the mounting holes 85-88 in the first support direction (Z1). Will be done. The moving member 17 is connected to the movable iron core 63 by attaching the connecting portion 26 to the head portion 78 of the movable iron core 63 in the first support direction (Z1). Further, the support portion 25 is supported by the base 11 by arranging the support portion 25 between the first wall portion 56 and the second wall portion 57 in the first support direction (Z1). In this way, the contact block 2 and the coil block 4 are assembled to the base 11 in the first support direction (Z1) perpendicular to the movement direction (Y1, Y2) of the moving member 17. Thereby, the influence of the assembly accuracy on the operation of the relay 1 can be reduced.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the invention.

In the above embodiment, the coil block 4 pushes the moving member 17 in the second moving direction (Y2), so that the movable contact 31-34 is separated from the fixed contact 21-24. Further, the coil block 4 pulls the moving member 17 in the first moving direction (Y1), so that the movable contact 31-34 comes into contact with the fixed contact 21-24. However, the operating direction of the moving member 17 for opening and closing the contacts may be opposite to that of the above embodiment. That is, the coil block 4 may push the moving member 17 in the second moving direction (Y2) so that the movable contact 31-34 may come into contact with the fixed contact 21-24. The movable contact 31-34 may be separated from the fixed contact 21-24 by the coil block 4 pulling the moving member 17 in the first moving direction (Y1).

The shapes or arrangements of the first fixed terminal 13, the second fixed terminal 14, the first movable contact piece 15, and the second movable contact piece 16 may be changed. For example, the first fixed terminal 13 and the second fixed terminal 14 may protrude from the base 11 in a direction different from that of the above embodiment. The first movable contact piece 15 and the second movable contact piece 16 may be integrated. That is, the first to fourth movable contacts 31-34 may be connected to the integrated movable contact piece. Alternatively, the second movable contact piece 16, the third and fourth movable contacts 33 and 34, and the third and fourth fixed contacts 23 and 24 may be omitted.

The shape or arrangement of the coil 61, the spool 62, the movable iron core 63, the fixed iron core 64, or the yoke 65 may be changed. The shape or arrangement of the first to fourth fixed contacts 21-24 may be changed. The shape or arrangement of the first to fourth movable contacts 31-34 may be changed.

The first fixed contact 21 and / or the third fixed contact 23 may be integrated with the first fixed terminal 13. The first fixed contact 21 and / or the third fixed contact 23 may be a part of the first fixed terminal 13 and may be flush with other parts of the first fixed terminal 13. The second fixed contact 22 and / or the fourth fixed contact 24 may be integrated with the second fixed terminal 14. The second fixed contact 22 and / or the fourth fixed contact 24 may be a part of the second fixed terminal 14 and may be flush with the other part of the second fixed terminal 14.

The first movable contact 31 and / or the second movable contact 32 may be integrated with the first movable contact piece 15. The first movable contact 31 and / or the second movable contact 32 may be a part of the first movable contact piece 15 and may be flush with other parts of the first movable contact piece 15. The third movable contact 33 and / or the fourth movable contact 34 may be integrated with the second movable contact piece 16. The third movable contact 33 and / or the fourth movable contact 34 may be a part of the second movable contact piece 16 and may be flush with other parts of the second movable contact piece 16.

The shape or arrangement of the moving member 17 may be changed. For example, the moving member 17 may include a shaft member that connects the movable contact pieces 15 and 16 and the movable iron core 63. The moving member 17 may be made of a conductive material. The moving member 17 may be made of metal. In the above embodiment, the moving member 17 includes a first member 17a and a second member 17b that are separate from each other. However, the moving member 17 may be integrally formed. The first movable contact piece 15 and the second movable contact piece 16 may be directly connected to the moving member 17.

According to the present invention, it is possible to reduce the influence of the assembly accuracy on the operation of the relay.

2 ... Contact block, 4 ... Coil block, 11 ... Base, 13 ... 1st fixed terminal, 14 ... 2nd fixed terminal, 15 ... 1st movable contact piece, 17. .. Moving member, 21 ... 1st fixed contact, 22 ... 2nd fixed contact, 25 ... support, 31 ... 1st movable contact, 32 ... 2nd movable contact, 37. .. Core connection part, 38 ... 1st mounting part, 43 ... hole, 44 ... groove, 45 ... 1st protrusion, 47 ... 1st tapered surface, 53 ... 1st Return spring, 54 ... 2nd return spring, 56 ... 1st wall, 57 ... 2nd wall, 61 ... Coil, 62 ... Spool, 63 ... Movable iron core, 77 ... Shaft part, 78 ... Head part, 81 ... First protrusion, 85 ... First mounting hole, 86 ... Second mounting hole

Claims (11)

1st fixed terminal and
With the first fixed contact connected to the first fixed terminal,
2nd fixed terminal and
With the second fixed contact connected to the second fixed terminal,
At a position between the movable contact piece, the first movable contact connected to the movable contact piece, the second movable contact connected to the movable contact piece, and the first movable contact and the second movable contact. A closed position in which the movable contact piece is held, the first movable contact contacts the first fixed contact and the second movable contact becomes the second fixed contact, and the first movable contact is the first fixed contact. A contact block including a moving member that can be separated from the second movable contact and moved to an open position that is separated from the second fixed contact.
A coil block including a coil, a spool including a hole extending in the moving direction of the moving member and the coil wound around the coil, and a movable iron core arranged in the hole of the spool and connected to the moving member.
A base that supports the first fixed terminal, the second fixed terminal, the contact block, and the coil block.
With
The contact block and the coil block are assembled to the base in a first support direction perpendicular to the moving direction of the moving member.
relay. The first fixed terminal and the second fixed terminal are assembled to the base in the first support direction.
The relay according to claim 1. The base is
A first mounting hole penetrating the base in the first support direction,
A second mounting hole that penetrates the base in the first support direction,
Including
The first fixed terminal is inserted into the first mounting hole and is inserted into the first mounting hole.
The second fixed terminal is inserted into the second mounting hole.
The relay according to claim 2. The coil block includes a protrusion that protrudes in the first support direction.
The base includes a mounting hole extending in the first support direction.
The protrusion is inserted into the mounting hole.
The relay according to any one of claims 1 to 3. The moving member includes a connecting portion connected to the movable iron core.
The connection part
The hole opened in the first support direction and
A groove that communicates with the hole and extends in the second support direction opposite to the first support direction.
Including
The movable iron core is
The shaft portion arranged in the groove and
A head portion that is arranged in the hole and locks to the connection portion,
including,
The relay according to any one of claims 1 to 4. Further provided with a return spring disposed between the coil block and the moving member.
The moving member includes a mounting portion to which the return spring is mounted.
The return spring is attached to the attachment portion in the first support direction.
The relay according to any one of claims 1 to 5. The mounting portion includes a protrusion protruding from the moving member toward the coil block.
The protrusion includes a tapered surface that is inclined so that the height of the protrusion becomes lower toward the second support direction opposite to the first support direction.
The relay according to claim 6. The moving member includes a connecting portion connected to the movable iron core.
A first return spring located between the coil block and the moving member, located in the first supporting direction and the first lateral direction perpendicular to the moving direction with respect to the connecting portion.
A second return spring located in the second lateral direction opposite to the first lateral direction with respect to the connection portion and arranged between the coil block and the moving member.
Further prepare,
The relay according to any one of claims 1 to 5. The moving member includes a support portion that supports the movable contact piece.
The movable contact piece extends from the support portion in a first lateral direction perpendicular to the first support direction and the movement direction, and in a second lateral direction opposite to the first lateral direction.
The support portion extends from the movable contact piece toward the base in the first support direction and is arranged on the base.
The relay according to any one of claims 1 to 8. The base includes a first wall portion extending in a second support direction opposite to the first support direction.
The first wall portion faces the support portion in the moving direction.
The relay according to claim 9. The base further includes a second wall portion that is disposed away from the first wall portion in the moving direction.
The support portion is arranged between the first wall portion and the second wall portion.
The relay according to claim 10.

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