Relay

Abstract

A relay, in which a moving part includes a support portion for holding a movable contact piece. A base includes a bottom surface and a first wall portion. The first wall portion extends from the bottom surface in a supporting direction and is opposite to the moving part in a moving direction. When viewed from the moving direction, at least a portion of the first wall portion overlaps with the movable iron core.

Description

Technical Field

[0001] The invention relates to a relay. Background Art

[0002] The relay has a pair of fixed terminals, a movable contact piece, and a moving part (for example, refer to Japanese Patent Publication No. 2002-042626). A fixed contact is connected to the fixed terminal. The movable contact piece is connected to the movable contact. The moving part supports the movable contact piece. The movable contact piece moves together with the moving part, so that the movable contact and the fixed contact are opened or closed.

[0003] In the above relay, by moving the moving member stably, the movable contact and the fixed contact can be stably opened and closed. However, if the movable contact piece becomes heavy, it is difficult to move the moving member stably. Summary of the invention

[0004] An object of the present invention is to improve the stability of the operation of a relay by stably moving a moving member.

[0005] A relay according to one embodiment of the present invention comprises a first fixed terminal, a first fixed contact, a second fixed terminal, a second fixed contact, a movable contact piece, a first movable contact, a second movable contact, a moving part, a base, a coil and a movable iron core. The first fixed contact is connected to the first fixed terminal. The second fixed contact is connected to the second fixed terminal. The first movable contact is connected to the movable contact piece. The second movable contact is connected to the movable contact piece. The moving part is connected to the movable contact piece. The moving part is capable of moving to a closed position and an open position. When the moving part 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 part 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 base supports the moving part in a supporting direction perpendicular to the moving direction of the moving part. The movable iron core is connected to the moving part and moves by the magnetic force generated by the coil.

[0006] The movable component includes a support portion for holding a movable contact piece. The base includes a bottom surface and a first wall portion. The first wall portion extends from the bottom surface in the support direction and is opposite to the support portion in the moving direction. When viewed from the moving direction, at least a portion of the first wall portion overlaps with the movable iron core.

[0007] In the relay involved in this method, the support portion of the moving part is stably supported by the base. In addition, when viewed from the moving direction, the first wall portion extends to a position overlapping with the movable iron core. Therefore, the first wall portion can be used to suppress the support portion from falling. As a result, the moving part can be stably moved.

[0008] The first wall portion may extend at least to the height of the center position of the support portion in the support direction. In this case, the moving member can be moved more stably.

[0009] The first wall portion may also extend in the supporting direction to a position beyond the movable contact piece. In this case, the moving member can be moved more stably.

[0010] The support portion may also include an inspection hole disposed opposite to the movable contact piece in the moving direction. The first wall portion may also include an opening disposed opposite to the inspection hole of the support portion in the moving direction. In this case, the inspection probe can reach the movable contact piece via the opening of the first wall portion and the inspection hole of the support portion.

[0011] The opening may also have a shape recessed from the end of the first wall portion. In this case, the opening is easily formed.

[0012] The opening may be larger than the inspection hole when viewed from the moving direction. In this case, the inspection probe can be easily brought to the movable contact piece.

[0013] The base may also include a second wall portion extending from the bottom surface in the supporting direction. The second wall portion may also be arranged separately from the first wall portion in the moving direction. The supporting portion may also be arranged between the first wall portion and the second wall portion in the moving direction. In this case, the first wall portion and the second wall portion can suppress the tilting of the supporting portion. Thus, the moving component can be moved more stably.

[0014] The first wall portion may be higher than the second wall portion in the support direction. In this case, the first wall portion can more effectively suppress the support portion from falling down.

[0015] The movable member may further include a connecting portion and a coupling portion. The connecting portion may also be connected to the movable iron core. The coupling portion may also couple the supporting portion to the connecting portion. When viewed from the supporting direction, the second wall portion may also overlap with the coupling portion. In this case, interference between the movable member and the second wall portion can be avoided, and the second wall portion can be used to suppress the tilting of the supporting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view of a relay according to the embodiment.

[0017] Figure 2 This is an exploded perspective view of a relay.

[0018] Figure 3 This is an exploded perspective view of a relay.

[0019] Figure 4 It is a longitudinal cross-sectional view of the relay.

[0020] Figure 5Top view of the relay with the moving part in the off position.

[0021] Figure 6 Top view of the relay with the moving part in the closed position.

[0022] Figure 7 It is a three-dimensional image of the base.

[0023] Figure 8 It is a three-dimensional image of the base.

[0024] Fig. 9 It is a three-dimensional diagram of the moving parts and their surroundings.

[0025] Fig.10 This is a diagram of the relay viewed from the moving direction. DETAILED DESCRIPTION

[0026] Hereinafter, a relay according to an embodiment will be described with reference to the drawings. Figure 1 It is a perspective view of the relay 1 according to the embodiment. Figure 2 and Figure 3 It is an exploded perspective view of the relay 1. Figure 4 It is a longitudinal sectional view of the relay 1. Figure 5 and Figure 6 is a top view of the relay 1.

[0027] The relay 1 includes a contact assembly 2, a housing 3, a coil assembly 4, a first fixed terminal 13, and a second fixed terminal 14. The contact assembly 2 and the coil assembly 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 resin, for example. Figure 1 In the embodiment, the box body 12 is omitted. The base 11 supports the first fixed terminal 13, the second fixed terminal 14, the contact assembly 2 and the coil assembly 4.

[0028] In this embodiment, the moving directions (Y1, Y2), the supporting directions (Z1, Z2), and the lateral directions (X1, X2) are defined as follows. The moving directions (Y1, Y2) are the directions in which the contact assembly 2 and the coil assembly 4 are arranged relative to 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 the direction from the contact assembly 2 toward the coil assembly 4. The second moving direction Y2 is the direction opposite to the first moving direction Y1. The second moving direction (Y2) is the direction from the coil assembly 4 toward the contact assembly 2.

[0029] The supporting directions (Z1, Z2) are directions perpendicular to the moving directions (Y1, Y2). The supporting directions (Z1, Z2) are directions in which the base 11 and the contact assembly 2 are arranged relative to each other. The supporting directions (Z1, Z2) include a first supporting direction (Z1) and a second supporting direction (Z2). The first supporting direction (Z1) is a direction from the contact assembly 2 toward the base 11. The second supporting direction Z2 is a direction opposite to the first supporting direction Z1. The second supporting direction (Z2) is a direction from the base 11 toward the contact assembly 2. Alternatively, the supporting directions (Z1, Z2) may also be directions in which the base 11 and the coil module 4 are arranged relative to each other.

[0030] 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 a direction opposite to the first lateral direction (X1).

[0031] 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 to be separated from each other in the lateral direction (X1, X2).

[0032] Figure 7 and Figure 8 71 and 72. The first mounting hole 71 and the second mounting hole 72 penetrate the base 11 in the first supporting direction Z1. The first fixed terminal 13 is inserted into the first mounting hole 71. Thus, the first fixed terminal 13 is fixed to the base 11. The front end of the first fixed terminal 13 protrudes outward from the base 11. The second fixed terminal 14 is inserted into the second mounting hole 72. Thus, the second fixed terminal 14 is fixed to the base 11. The front end of the second fixed terminal 14 protrudes outward from the base 11.

[0033] The first fixed terminal 13 is connected to a first fixed contact 21 and a third fixed contact 23. In the first fixed terminal 13, the first fixed contact 21 and the third fixed contact 23 are arranged to be separated from each other in the support direction (Z1, Z2). The second fixed terminal 14 is connected to a second fixed contact 22 and a fourth fixed contact 24. In the second fixed terminal 14, the second fixed contact 22 and the fourth fixed contact 24 are arranged to be separated from each other in the support direction (Z1, Z2). The first fixed contact 21 to the fourth fixed contact 24 are formed of a conductive material such as silver or copper.

[0034] The contact assembly 2 includes a first movable contact piece 15, a second movable contact piece 16 and a movable 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 separated from each other. The first movable contact piece 15 and the second movable contact piece 16 are arranged separately from each other in the supporting direction (Z1, Z2). The first movable contact piece 15 is arranged between the second movable contact piece 16 and the base 11 in the supporting direction (Z1, Z2). The first movable contact piece 15 and the second movable contact piece 16 are formed of a conductive material such as copper.

[0035] 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 to be separated from each other in the lateral direction (X1, X2). The first movable contact 31 is arranged opposite to the first fixed contact 21. The second movable contact 32 is arranged opposite to the second fixed contact 22.

[0036] 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 to be separated from each other in the lateral direction (X1, X2). The third movable contact 33 is arranged opposite to the third fixed contact 23. The fourth movable contact 34 is arranged opposite to the fourth fixed contact 24. The first movable contact 31 to the fourth movable contact 34 are formed of a conductive material such as silver or copper.

[0037] The moving part 17 is connected to the first movable contact piece 15 and the second movable contact piece 16. The moving part 17 is made of an insulating material such as resin. The moving part 17 can be moved to a closed position and an open position. Figure 1 , Figure 4 , Figure 5 In the embodiment, the movable part 17 is in the disconnected position. When the movable part 17 is in the disconnected position, the movable contacts 31-34 are separated from the fixed contacts 21-24 respectively. Figure 6 In the embodiment, the moving part 17 is located in the closed position. When the moving part 17 is in the closed position, the movable contacts 31-34 are in contact with the fixed contacts 21-24 respectively.

[0038] The coil assembly 4 moves the first movable contact piece 15 and the second movable contact piece 16 by electromagnetic force. The coil assembly 4 moves the first movable contact piece 15 and the second movable contact piece 16 in a first moving direction (Y1) and a second moving direction (Y2). The first moving direction (Y1) is the direction in which the movable contacts 31-34 contact the fixed contacts 21-24 in the moving direction (Y1, Y2). The second moving direction (Y2) is the direction in which the movable contacts 31-34 move away from the fixed contacts 21-24 in the moving direction (Y1, Y2). The coil assembly 4 includes a coil 61, a bobbin 62, a movable iron core 63, a fixed iron core 64 and a yoke 65.

[0039] The coil 61 is wound around the bobbin 62. The axis of the coil 61 extends in the moving direction (Y1, Y2). The coil 61 is connected to the coil terminals 66, 67. Figure 2 and Figure 3 As shown, the coil terminals 66, 67 protrude from the coil assembly 4 in the first supporting direction (Z1). Figure 8 As shown, the base 11 includes mounting holes 68, 69. The mounting holes 68, 69 penetrate the base 11 in the first supporting direction Z1. The coil terminals 66, 67 are inserted into the mounting holes 68, 69, respectively.

[0040] like Figure 4 As shown, the bobbin 62 includes a hole 621 extending along the moving direction (Y1, Y2). At least a portion of the movable iron core 63 is disposed in the hole 621 of the bobbin 62. The movable iron core 63 is configured to be movable in the first moving direction (Y1) and the second moving direction (Y2). The fixed iron core 64 is disposed in the hole 621 of the bobbin 62. The fixed iron core 64 is disposed opposite to the movable iron core 63 in the moving direction (Y1, Y2). The coil 61 generates an electromagnetic force that moves the movable iron core 63 in the first moving direction (Y1) by energizing.

[0041] The movable iron core 63 is connected to the movable member 17. The first movable contact piece 15 and the movable iron core 63 are electrically insulated by the movable member 17. The second movable contact piece 16 and the movable iron core 63 are electrically insulated by the movable member 17. The movable iron core 63 moves integrally with the movable member 17 in the moving direction (Y1, Y2). The movable iron core 63 moves in the first moving direction (Y1) according to the magnetic force generated from the coil 61. As the movable iron core 63 moves, the movable member 17 moves to the closed position. As the movable 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).

[0042] The yoke 65 is arranged in a manner to surround the coil 61. The yoke 65 is arranged on the magnetic circuit formed by 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 supporting direction (Z1, Z2). The first yoke 73 and the second yoke 74 are opposite to the coil 61 in the moving direction (Y1, Y2). The coil 61 is located between the first yoke 73 and the second yoke 74 in the moving direction (Y1, Y2). The first yoke 73 is opposite to the moving part 17 in the moving direction (Y1, Y2). The second yoke 74 is connected to the fixed core 64.

[0043] 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 are opposite to the coil 61 in the transverse direction (X1, X2). The coil 61 is located between the third yoke 75 and the fourth yoke 76 in the transverse direction (X1, X2).

[0044] like Figure 3 As shown, the coil assembly 4 includes a plurality of protrusions 81-84. The plurality of protrusions 81-84 protrude from the coil assembly 4 toward the first supporting direction Z1. In detail, the yoke 65 includes a plurality of protrusions 81-84. The plurality of protrusions 81-84 include first to fourth protrusions 81-84. The first protrusion 81 protrudes from the first yoke 73 toward the first supporting direction (Z1). The second protrusion 82 protrudes from the second yoke 74 toward the first supporting direction (Z1). The third protrusion 83 protrudes from the third yoke 75 toward the first supporting direction (Z1). The fourth protrusion 84 protrudes from the fourth yoke 76 toward the first supporting direction (Z1).

[0045] like Figure 7 and Figure 8 As shown, 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 supporting 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 respectively inserted into the plurality of mounting holes 85-88. In detail, the plurality of mounting holes 85-88 include first to fourth mounting holes 85-88. The first protrusion 81 is inserted into the first mounting hole 85. The second protrusion 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. Thus, the coil assembly 4 is fixed to the base 11.

[0046] Fig. 91 is a perspective view of the movable member 17 and its surroundings. The movable member 17 includes a support portion 25, a connection 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 support portion 25 and the connection portion 26. The connecting portion 27 connects the support portion 25 and the connection portion 26. The connecting portion 27 extends in the moving direction (Y1, Y2).

[0047] 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). Figure 4 As shown, the support portion 25 extends from the second movable contact piece 16 toward the top surface 121 of the box body 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 disposed in the first support hole 28. The first movable contact piece 15 is supported by the support portion 25 between the first movable contact point 31 and the second movable contact point 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).

[0048] 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 point 33 and the fourth movable contact point 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 divides 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.

[0049] 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 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 supporting portion 25. A first supporting hole 28 and a second supporting hole 29 are provided between the first member 17a and the second member 17b.

[0050] 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 portion 35 is disposed on the base 11. The second end portion 36 is disposed close to the top surface 121 of the box body 12. The support portion 25 is supported on the base 11 in the support directions Z1 and Z2.

[0051] The contact assembly 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. In a state where the first movable contact 31 is in contact with the first fixed contact 21 and the second movable contact 32 is in contact with the second fixed contact 22, the first contact spring 51 presses the first movable contact piece 15 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 movable member 17 is in the disconnected position. The first movable contact piece 15 is connected to the movable member 17 via the first contact spring 51.

[0052] The second contact spring 52 is arranged between the second movable contact piece 16 and the support portion 25. The second contact spring 52 is arranged in the second support hole 29. 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, the second contact spring 52 presses the second movable contact piece 16 toward the first fixed terminal 13 and the second fixed terminal 14. The second contact spring 52 is a coil spring and is in a state of natural length when the movable member 17 is in the disconnected position. The second movable contact piece 16 is connected to the movable member 17 via the second contact spring 52.

[0053] Fig.10 This is a diagram of relay 1 viewed from the moving direction (Y1, Y2). Figure 1 , 4 As shown in Figures 10 and 10, the support portion 25 includes a first inspection hole 41 and a second inspection hole 42. The first inspection hole 41 and the second inspection hole 42 extend in the moving direction (Y1, Y2). When viewed from the moving direction (Y1, Y2), the first inspection hole 41 is arranged opposite to the first movable contact piece 15. When viewed from the moving direction (Y1, Y2), the first inspection hole 41 is arranged opposite to the hole of the first contact spring 51. A portion of the first movable contact piece 15 can be visually confirmed through the first inspection hole 41. When viewed from the moving direction (Y1, Y2), the second inspection hole 42 is arranged opposite to the second movable contact piece 16. When viewed from the moving direction (Y1, Y2), the second inspection hole 42 is arranged opposite to the hole of the second contact spring 52. A portion of the second movable contact piece 16 can be visually confirmed through the second inspection hole 42.

[0054] The connecting portion 26 extends in the lateral direction (X1, X2). Fig. 9 As shown, the connection portion 26 includes a core connection portion 37, a first mounting portion 38, and a second mounting portion 39. The core connection portion 37 is located between the first mounting portion 38 and the second mounting portion 39. The core connection portion 37 is connected to the connecting portion 27. Figure 4 and Fig. 9As shown, the core connection portion 37 includes a hole 43 and a slot 44. The hole 43 opens toward the first supporting direction (Z1). The slot 44 is connected to the hole 43 and extends toward the second supporting direction (Z2). The width of the slot 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 protrude from the coil assembly 4 toward the second moving direction (Y2). The width of the head portion 78 is greater than the width of the shaft portion 77. The width of the head portion 78 is greater than the width of the slot 44. The shaft portion 77 is arranged in the slot 44. The head portion 78 is arranged in the hole 43. Thus, the movable component 17 is prevented from falling off relative to the movable iron core 63 in the moving directions (Y1, Y2).

[0055] The first mounting portion 38 extends from the core connecting portion 37 to the first lateral direction (X1). The first mounting portion 38 includes a first protrusion 45. The first protrusion 45 protrudes from the first mounting portion 38 toward the coil component 4. The second mounting portion 39 extends from the core connecting portion 37 to the second lateral direction (X2). The second mounting portion 39 includes a second protrusion 46. The second protrusion 46 protrudes from the second mounting portion 39 toward the coil component 4.

[0056] 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 part 17 and the coil assembly 4. The first return spring 53 is located in the first lateral direction (X1) relative to the connecting part 26. The second return spring 54 is located in the second lateral direction (X2) relative to the connecting part 26. In other words, the connecting part 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 apply force to the moving part 17 in the second moving direction (Y2). The first return spring 53 is installed on the first protrusion 45. The second return spring 54 is installed on the second protrusion 46.

[0057] like Figure 4 , Figure 7 as well as Figure 8 As shown, the base 11 includes 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. The bottom surface 55 supports the contact assembly 2 and the coil assembly 4 in the supporting directions Z1 and Z2. The bottom surface 55 is located in the first supporting direction (Z1) relative to the contact assembly 2 and the coil assembly 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 to the second supporting direction (Z2).

[0058] The first wall portion 56 and the second wall portion 57 are arranged to be separated from each other in the moving direction (Y1, Y2). The first wall portion 56 and the second wall portion 57 are opposite to the support portion 25 of the movable 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 direction (Y1, Y2). The first wall portion 56 and the second wall portion 57 extend in the lateral direction (X1, X2). When viewed from the moving direction (Y1, Y2), the first wall portion 56 overlaps with the support portion 25. The first wall portion 56 is located relative to the support portion 25 in the second moving direction (Y2). The first wall portion 56 extends in the second supporting 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 supporting direction Z2 to a position between the first movable contact piece 15 and the second movable contact piece 16. When viewed from the moving direction (Y1, Y2), the first wall portion 56 overlaps with the partition wall 30. At least a portion of the first wall portion 56 overlaps with the movable iron core 63 when viewed from the moving direction.

[0059] 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 protrude 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 to be separated from each other in the lateral direction (X1, X2). When the moving member 17 is in the disconnected position, the support portion 25 is located between the first guide portion 91 and the second guide portion 92.

[0060] The first wall portion 56 includes an opening 99. The opening 99 penetrates the first wall portion 56 in the moving direction (Y1, Y2). The opening 99 is arranged opposite to the first inspection hole 41 of the support portion 25 when viewed from the moving direction (Y1, Y2). The first inspection hole 41 can be visually confirmed through the opening 99. The opening 99 has a shape that is recessed from the end of the first wall portion 56 toward the first supporting direction (Z1).

[0061] The first wall portion 56 extends in the supporting direction (Z1, Z2) to a position between the first inspection hole 41 and the second inspection hole 42. When viewed from the moving direction (Y1, Y2), the opening 99 is larger than the first inspection hole 41 in the lateral direction (X1, X2). When viewed from the moving direction (Y1, Y2), the opening 99 is smaller than the supporting portion 25 in the lateral direction (X1, X2). When viewed from the moving direction (Y1, Y2), the opening 99 is larger than the first inspection hole 41 in the supporting direction (Z1, Z2).

[0062] When viewed from the moving direction (Y1, Y2), the second wall portion 57 overlaps with the support portion 25. The second wall portion 57 is located in the first moving direction (Y1) relative to the support portion 25. The second wall portion 57 is lower than the first wall portion 56 in the supporting direction (Z1, Z2). When viewed from the supporting 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 supporting direction (Z1, Z2). The third guide portion 93 and the fourth guide portion 94 protrude 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 to be separated from each other in the lateral direction (X1, X2). When the movable member 17 is in the closed position, the support portion 25 is located between the third guide portion 93 and the fourth guide portion 94.

[0063] The third wall portion 58 and the fourth wall portion 59 are opposite to 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 direction (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 supporting direction (Z1, Z2). The third wall portion 58 and the fourth wall portion 59 overlap the first movable contact piece 15 and the second movable contact piece 16 when viewed from the supporting direction (Z1, 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) relative 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 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) relative to the support portion 25.

[0064] 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 that is recessed in the first supporting direction (Z1). The first recess 95 is located in the first supporting direction (Z1) relative to the first movable contact 31. When viewed from the supporting directions (Z1, Z2), the first recess 95 overlaps with the first movable contact 31 and the third movable contact 33. The second recess 96 is located in the first supporting direction (Z1) relative to the second movable contact 32. When viewed from the supporting directions (Z1, Z2), the second recess 96 overlaps with the second movable contact 32 and the fourth movable contact 34.

[0065] 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 that is recessed in the first supporting direction (Z1). The third recess 97 is located in the first supporting direction (Z1) relative to the first fixed contact 21. When viewed from the supporting directions (Z1, Z2), the third recess 97 overlaps with the first fixed contact 21 and the third fixed contact 23. The fourth recess 98 is located in the first supporting direction (Z1) relative to the second fixed contact 22. When viewed from the supporting directions (Z1, Z2), the fourth recess 98 overlaps with the second fixed contact 22 and the fourth fixed contact 24.

[0066] Next, the operation of the relay 1 is described. When the coil 61 is not energized, the coil assembly 4 is not excited. In this case, the movable member 17 and the movable iron core 63 are pressed in the second moving direction (Y2) by the elastic force of the return springs 53 and 54, and the movable member 17 is located at Figure 5 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 movable member 17. Therefore, when the movable member 17 is in the disconnected 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 movable member 17 is in the disconnected 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.

[0067] If the coil 61 is energized, the coil assembly 4 is excited. In this case, the movable iron core 63 overcomes the elastic force of the return springs 53 and 54 and moves in the first moving direction (Y1) by the electromagnetic force of the coil 61. As a result, the movable member 17, the first movable contact piece 15, and the second movable contact piece 16 move together in the first moving direction (Y1). Figure 6 As shown, the movable member 17 moves to the closed position. As a result, when the movable member 17 is in the closed position, the first movable contact 31 and the second movable contact 32 are in contact with the first fixed contact 21 and the second fixed contact 22, respectively. Similarly, when the movable member 17 is in the closed position, the third movable contact 33 and the fourth movable contact 34 are in contact with the third fixed contact 23 and the fourth fixed contact 24, respectively. Thus, 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.

[0068] When the current to the coil 61 stops and the coil 61 is demagnetized, 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 movable member 17, the first movable contact piece 15 and the second movable contact piece 16 move in the second moving direction (Y2) together. Figure 5As shown, the movable member 17 moves to the disconnected position. As a result, when the movable member 17 is in the disconnected 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 movable member 17 is in the disconnected 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.

[0069] In the relay 1 of the present embodiment described above, the support portion 25 of the movable member 17 is stably supported by the base 11. In addition, when viewed from the moving direction (Y1, Y2), the first wall portion 56 extends to a position overlapping with the movable iron core 63. Therefore, the first wall portion 56 can suppress the tilting of the movable member 17. Thus, the movable member 17 can be stably moved. Moreover, through the opening 99 of the first wall portion 56 and the first inspection hole 41 of the support portion 25, the inspection probe can reach the first movable contact piece 15. Thus, in a state where the contact assembly 2 is mounted on the base 11, the power-on state of the first movable contact piece 15 can be inspected. In addition, through the second inspection hole 42, the inspection probe can reach the second movable contact piece 16. Thus, in a state where the contact assembly 2 is mounted on the base 11, the power-on state of the second movable contact piece 16 can be inspected.

[0070] Although one embodiment 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.

[0071] In the above-mentioned embodiment, the movable part 17 is pushed out in the second moving direction (Y2) by the coil assembly 4, so that the movable contacts 31-34 are separated from the fixed contacts 21-24. In addition, the movable part 17 is pulled in in the first moving direction (Y1) by the coil assembly 4, so that the movable contacts 31-34 are in contact with the fixed contacts 21-24. However, the movement direction of the movable part 17 for opening and closing the contacts may be opposite to that in the above-mentioned embodiment. That is, the movable part 17 may be pushed out in the second moving direction (Y2) by the coil assembly 4, so that the movable contacts 31-34 are in contact with the fixed contacts 21-24. The movable part 17 may be pulled in in the first moving direction (Y1) by the coil assembly 4, so that the movable contacts 31-34 are separated from the fixed contacts 21-24.

[0072] The shapes or configurations 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 also 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 in the above-mentioned embodiment. The first movable contact piece 15 and the second movable contact piece 16 may also be integrated. That is, the first movable contact 31 to the fourth movable contact 34 may also be connected to the integrated movable contact piece. Alternatively, the second movable contact piece 16, the third and fourth movable contacts 33, 34, and the third and fourth fixed contacts 23, 24 may also be omitted.

[0073] The shape or arrangement of the coil 61, bobbin 62, movable iron core 63, fixed iron core 64, or yoke 65 may be changed. The shape or arrangement of the first to fourth fixed contacts 21 to 24 may be changed. The shape or arrangement of the first to fourth movable contacts 31 to 34 may be changed.

[0074] The first fixed contact 21 and / or the third fixed contact 23 may also be integrated with the first fixed terminal 13. The first fixed contact 21 and / or the third fixed contact 23 may also be a part of the first fixed terminal 13, and be in the same plane with other parts of the first fixed terminal 13. The second fixed contact 22 and / or the fourth fixed contact 24 may also be integrated with the second fixed terminal 14. The second fixed contact 22 and / or the fourth fixed contact 24 may also be a part of the second fixed terminal 14, and be in the same plane with other parts of the second fixed terminal 14.

[0075] The first movable contact 31 and / or the second movable contact 32 may also be integrated with the first movable contact piece 15. The first movable contact 31 and / or the second movable contact 32 may also be a part of the first movable contact piece 15, and be in the same plane as other parts of the first movable contact piece 15. The third movable contact 33 and / or the fourth movable contact 34 may also be integrated with the second movable contact piece 16. The third movable contact 33 and / or the fourth movable contact 34 may also be a part of the second movable contact piece 16, and be in the same plane as other parts of the second movable contact piece 16.

[0076] The shape or configuration of the movable member 17 may also be changed. For example, the movable member 17 may also include a shaft member that connects the movable contact pieces 15 and 16 to the movable iron core 63. The movable member 17 may also be made of a conductive material. The movable member 17 may also be made of metal. In the above embodiment, the movable member 17 includes a first member 17a and a second member 17b that are separate from each other. However, the movable member 17 may also be formed as an integral body. The first movable contact piece 15 and the second movable contact piece 16 may also be directly connected to the movable member 17.

[0077] The shape of the base 11 may also be changed. For example, the opening 99 of the first wall portion is not limited to the above-mentioned concave shape, but may be other shapes such as a hole. The opening 99 of the first wall portion may also be omitted.

Claims

1. A relay, characterized in that: have: a first fixed terminal; a first fixed contact connected to the first fixed terminal; A second fixed terminal; a second fixed contact connected to the second fixed terminal; Movable contact piece; a first movable contact point connected to the movable contact piece; a second movable contact connected to the movable contact piece; a movable member connected to the movable contact piece and capable of moving so that the movable contact and the fixed contact are in a closed position and an open position, wherein the closed position is a position where the first movable contact is in contact with the first fixed contact and the second movable contact is in contact with the second fixed contact, and the open position is a position where the first movable contact is separated from the first fixed contact and the second movable contact is separated from the second fixed contact; a base that supports the moving part in a supporting direction perpendicular to the moving direction of the moving part; Coil; and A movable iron core is connected to the moving part and moves by the magnetic force generated by the coil, wherein The moving member includes a support portion for holding the movable contact piece, The base comprises a bottom surface and a first wall portion, The first wall portion extends from the bottom surface toward the supporting direction and is opposite to the moving component in the moving direction. At least a portion of the first wall portion overlaps with the movable iron core when viewed from the moving direction.

2. The relay according to claim 1, characterized in that: The first wall portion extends in the supporting direction at least to the height of a central position of the supporting portion.

3. The relay according to claim 1 or 2, characterized in that: The first wall portion extends in the supporting direction to a position beyond the movable contact piece.

4. The relay according to claim 1 or 2, characterized in that: The support portion includes an inspection hole arranged opposite to the movable contact piece in the moving direction, The first wall portion includes an opening disposed opposite to the inspection hole of the support portion in the moving direction.

5. The relay according to claim 4, characterized in that: The opening has a shape recessed from an end portion of the first wall portion.

6. The relay according to claim 4, characterized in that: When viewed from the moving direction, the opening is larger than the inspection hole.

7. The relay according to claim 1 or 2, characterized in that: The base includes a second wall portion extending from the bottom surface to the supporting direction, The second wall portion is arranged to be separated from the first wall portion in the moving direction, The support portion is disposed between the first wall portion and the second wall portion in the moving direction.

8. The relay according to claim 7, characterized in that: The first wall portion is higher than the second wall portion in the supporting direction.

9. The relay according to claim 7, characterized in that: The moving part also includes, a connecting portion connected to the movable iron core; and a connecting portion connecting the supporting portion and the connecting portion, The second wall portion overlaps the connecting portion when viewed from the supporting direction.

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