JP7287225B2 - relay - Google Patents

Description

The present invention relates to relays.

Some relays include a pair of fixed terminals, a movable contact piece, and a moving member (see Patent Document 1, for example). A fixed contact is connected to the fixed terminal. A movable contact is connected to the movable contact piece. The moving member supports the movable contact piece. The movable contact and the fixed contact are opened and closed by moving the movable contact piece together with the moving member.

Japanese Patent Application Laid-Open No. 2002-042626

In the relay as described above, by stably moving the moving member, it is possible to stably open and close the movable contact and the fixed contact. However, when the movable contact piece becomes heavy, it is difficult to move the moving member stably. SUMMARY OF THE INVENTION An object of the present invention is to improve the stability of relay operation by stably moving a moving member.

A relay according to an aspect of the present invention includes a first fixed terminal, a first fixed contact, a second fixed terminal, a second fixed contact, a movable contact piece, a first movable contact, and a second movable contact. , a moving member, a base, a coil, and a movable core. The first fixed contact is connected to the first fixed terminal. The second fixed contact is connected to the second fixed terminal. A first movable contact is connected to the movable contact piece. A second movable contact is connected to the movable contact piece. A moving member is connected to the movable contact piece. The moving member is movable between a closed position and an 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 makes 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 base supports the moving member in a supporting direction perpendicular to the moving direction of the moving member. The movable core is connected to the moving member and moved by the magnetic force generated by the coil.

The moving member includes a support that holds the movable contact piece. The base includes a bottom surface and a first wall. The first wall extends from the bottom surface in the support direction and faces the support in the movement direction. At least a portion of the first wall overlaps the movable iron core when viewed from the movement direction.

In the relay according to this aspect, the supporting portion of the moving member is stably supported by the base. Also, the first wall portion extends to a position overlapping the movable iron core when viewed from the moving direction. Therefore, the tilting of the support portion is suppressed by the first wall portion. Thereby, the moving member can be stably moved.

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

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

The support may include an inspection hole arranged opposite the movable contact piece in the direction of movement. The first wall may include an opening arranged opposite the inspection hole of the support in the direction of movement. In this case, the inspection probe can reach the movable contact piece through the opening of the first wall portion and the inspection hole of the support portion.

The opening may have a shape recessed from the end of the first wall. In this case, formation of the opening is easy.

Viewed from the direction of movement, the opening may be larger than the inspection hole. In this case, the inspection probe can easily reach the movable contact piece.

The base may include a second wall extending in the support direction from the bottom surface. The second wall may be spaced apart from the first wall in the direction of movement. The support may be arranged between the first wall and the second wall in the direction of movement. In this case, the tilting of the supporting portion is suppressed by the first wall portion and the second wall portion. Thereby, the moving member can be moved more stably.

The first wall may be higher than the second wall in the supporting direction. In this case, the tilting of the support portion is more effectively suppressed by the first wall portion.

The moving member may further include a connecting portion and a connecting portion. The connecting portion may be connected to the movable core. The connecting portion may connect the supporting portion and the connecting portion. When viewed from the support direction, the second wall may overlap the connecting portion. In this case, it is possible to suppress the fall of the supporting portion by the second wall portion while avoiding interference between the moving member and the second wall portion.

According to the present invention, by stably moving the moving member, the stability of the operation of the relay can be improved.

1 is a perspective view of a relay according to an embodiment; FIG. It is an exploded perspective view of a relay. It is an exploded perspective view of a relay. It is a longitudinal cross-sectional view of a relay. FIG. 4B is a top view of the relay when the moving member is in the open position; FIG. 4B is a top view of the relay when the moving member is in the closed position; Fig. 3 is a perspective view of the base; Fig. 3 is a perspective view of the base; 3 is a perspective view of a moving member and its surroundings; FIG. It is the figure which looked at the relay from the movement direction.

A relay 1 according to an embodiment will be described below with reference to the drawings. FIG. 1 is a perspective view of a relay 1 according to an embodiment. 2 and 3 are exploded perspective views of the relay 1. FIG. 4 is a longitudinal sectional view of the relay 1. FIG. 5 and 6 are top views of the relay 1. FIG.

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

In this embodiment, the movement direction (Y1, Y2), the support direction (Z1, Z2), and the lateral direction (X1, X2) are defined as follows. The movement direction (Y1, Y2) is the direction 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). A first movement direction (Y1) is a direction from the contact block 2 toward the coil block 4 . The second direction of movement (Y2) is opposite to the first direction of movement (Y1). The second movement direction (Y2) is the direction from the coil block 4 toward the contact block 2. As shown in FIG.

The support directions (Z1, Z2) are perpendicular to the movement directions (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 the direction from the contact block 2 toward the base 11. As shown in FIG. The second support direction (Z2) is opposite to the first support direction (Z1). The second support direction (Z2) is the direction from the base 11 toward the contact block 2. As shown in FIG. Alternatively, the support directions (Z1, Z2) may be the directions in which the base 11 and the coil block 4 are arranged side by side.

The lateral direction (X1, X2) is the direction perpendicular to the movement direction (Y1, Y2) and the support direction (Z1, Z2). The lateral directions (X1, X2) include a first lateral direction (X1) and a second lateral direction (X2). The second lateral direction (X2) is opposite to the first lateral direction (X1).

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

7 and 8 are perspective views of the base 11. FIG. 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 pass through the base 11 in the first support direction (Z1). The first fixed terminal 13 is inserted into the first attachment hole 71 . Thereby, the first fixed terminal 13 is fixed to the base 11 . A tip 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 . Thereby, the second fixed terminal 14 is fixed to the base 11 . The tip of the second fixed terminal 14 protrudes outward from the base 11 .

A first fixed contact 21 and a 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 . A second fixed contact 22 and a 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 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 direction (Z1, Z2). The first movable contact piece 15 and the second movable contact piece 16 are made of a conductive material such as copper.

A first movable contact 31 and a 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 horizontal direction (X1, X2). The first movable contact 31 is arranged to face the first fixed contact 21 . The second movable contact 32 is arranged to face the second fixed contact 22 .

A third movable contact 33 and a 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 horizontal direction (X1, X2). The third movable contact 33 is arranged to face the third fixed contact 23 . The fourth movable contact 34 is arranged 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 is movable between a closed position and an open position. 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 contact 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 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 movement direction (Y1) is the direction in which the movable contacts 31-34 contact the fixed contacts 21-24 in the movement directions (Y1, Y2). The second movement direction (Y2) is the direction in which the movable contacts 31-34 move away from the fixed contacts 21-24 in the movement directions (Y1, Y2). Coil block 4 includes coil 61 , spool 62 , movable core 63 , fixed core 64 , and yoke 65 .

The coil 61 is wound around a spool 62 . The axis of the coil 61 extends in the movement direction (Y1, Y2). The coil 61 is connected to coil terminals 66 and 67 . As shown in FIGS. 2 and 3, the coil terminals 66 and 67 protrude 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 pass through the base 11 in the first support direction (Z1). Coil terminals 66 and 67 are inserted into mounting holes 68 and 69, respectively.

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

The movable 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 the moving member 17 . The second movable contact piece 16 and the movable iron core 63 are electrically insulated by the moving member 17 . The movable iron core 63 moves together 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 . As the movable core 63 moves, 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).

Yoke 65 is arranged to surround coil 61 . The yoke 65 is arranged on the magnetic circuit formed by the coil 61 . 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 positioned 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 core 64 .

The third yoke 75 and the fourth yoke 76 extend in the movement direction (Y1, Y2) and the support 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 positioned between the third yoke 75 and the fourth yoke 76 in the lateral direction (X1, X2).

As shown in FIG. 3, coil block 4 includes a plurality of protrusions 81-84. A plurality of protrusions 81-84 protrude from the coil block 4 in the first support direction (Z1). Specifically, yoke 65 includes a plurality of protrusions 81-84. The plurality of protrusions 81-84 includes first to fourth protrusions 81-84. The first protrusion 81 protrudes from the first yoke 73 in the first support direction (Z1). The second protrusion 82 protrudes from the second yoke 74 in the first support direction (Z1). The third protrusion 83 protrudes from the third yoke 75 in the first support direction (Z1). The fourth protrusion 84 protrudes from the fourth yoke 76 in the first support direction (Z1).

As shown in FIGS. 7 and 8, base 11 includes a plurality of mounting holes 85-88. A 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 includes first through fourth mounting holes 85-88. The first projecting portion 81 is inserted into the first mounting hole 85 . The second projecting portion 82 is inserted into the second mounting hole 86 . The third projecting portion 83 is inserted into the third mounting hole 87 . The fourth projecting portion 84 is inserted into the fourth mounting hole 88 . The coil block 4 is thereby fixed to the base 11 .

FIG. 9 is a perspective view of the moving member 17 and its periphery. The moving member 17 includes a support portion 25 , a connection portion 26 and a connection 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 core 63 . The connecting portion 27 is positioned 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 movement 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 inside the first support hole 28 . The first movable contact piece 15 is supported by the 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 horizontal direction (X1) and the second horizontal direction (X2).

The second movable contact piece 16 is arranged inside 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 horizontal direction (X1) and the second horizontal direction (X2). The partition wall 30 partitions the first support hole 28 and the second support hole 29 . A 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 members. The first member 17 a includes a connecting portion 27 , a portion of the supporting portion 25 and a connecting portion 26 . The second member 17b includes 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.

Support portion 25 includes a first end 35 and a second end 36 . The first end portion 35 is the end portion of the support portion 25 in the first support direction (Z1). The second end portion 36 is the 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 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 inside 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 pushes 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 has a natural length when the moving member 17 is at 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 support portion 25 . The second contact spring 52 is arranged inside 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 pushes the second movable contact piece 16. Press toward the first fixed terminal 13 and the second fixed terminal 14 . The second contact spring 52 is a coil 61 spring, and has a 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 .

FIG. 10 is a diagram of the relay 1 viewed from the movement direction (Y1, Y2). As shown in FIGS. 1, 4 and 10, the support portion 25 includes a first inspection hole 41 and a second inspection hole . The first inspection hole 41 and the second inspection hole 42 extend in the movement direction (Y1, Y2). The first inspection hole 41 is arranged to face the first movable contact piece 15 when viewed from the moving direction (Y1, Y2). The first inspection hole 41 is arranged to face the hole of the first contact spring 51 when viewed from the movement direction (Y1, Y2). A portion of the first movable contact piece 15 is visible through the first inspection hole 41 . The second inspection hole 42 is arranged to face the second movable contact piece 16 when viewed in the movement direction (Y1, Y2). The second inspection hole 42 is arranged to face the hole of the second contact spring 52 when viewed from the movement direction (Y1, Y2). A portion of the second movable contact piece 16 is visible through the second inspection hole 42 .

The connecting portion 26 extends in the horizontal direction (X1, X2). As shown in FIG. 9 , the connection portion 26 includes a core connection portion 37 , a first attachment portion 38 and a second attachment portion 39 . The core connecting portion 37 is positioned 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, core connecting portion 37 includes holes 43 and grooves 44 . The holes 43 are open in the first support direction (Z1). The groove 44 communicates with the hole 43 and extends in the second support direction (Z2). The width of groove 44 is narrower than the width of hole 43 . 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 block 4 in the second movement 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 groove 44 . Axle 77 is disposed within groove 44 . Head portion 78 is positioned within bore 43 . As a result, the moving member 17 is prevented from coming off with respect to the movable iron core 63 in the moving directions (Y1, Y2).

The first mounting portion 38 extends from the core connecting portion 37 in the first lateral direction (X1). The first attachment portion 38 includes a first protrusion 45 . The first protrusion 45 protrudes from the first attachment portion 38 toward the coil block 4 . The second attachment portion 39 extends from the core connection portion 37 in the second lateral direction (X2). The second attachment portion 39 includes a second protrusion 46 . The second protrusion 46 protrudes from the second attachment portion 39 toward the coil block 4 .

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 positioned in the first lateral direction (X1) with respect to the connection portion 26 . The second return spring 54 is positioned in the second lateral direction (X2) with respect to the connection portion 26 . In other words, the connecting portion 26 is positioned 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 bias the moving member 17 in the second movement direction (Y2). A first return spring 53 is attached to the first protrusion 45 . A second return spring 54 is attached to the second projection 46 .

As shown in FIGS. 4, 7, and 8, 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. include. 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 supporting direction (Z1) with respect to the contact block 2 and the coil block 4. As shown in FIG. 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 movement 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 positioned between the first wall portion 56 and the second wall portion 57 in the movement direction (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 the support portion 25 when viewed from the movement direction (Y1, Y2). The first wall portion 56 is positioned in the second movement direction (Y2) with respect to the support portion 25 . The first wall portion 56 extends at least up to the height of the central portion of the support portion 25 in the second support direction (Z2). The first wall portion 56 extends to a position between the first movable contact piece 15 and the second movable contact piece 16 in the second support direction (Z2). The first wall portion 56 overlaps the partition wall 30 when viewed from the movement direction (Y1, Y2). At least part of the first wall portion 56 overlaps the movable iron core 63 when viewed from the movement direction.

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 apart from each other in the lateral direction (X1, X2). When the moving member 17 is in the open position, the support portion 25 is positioned between the first guide portion 91 and the second guide portion 92 .

First wall portion 56 includes opening 99 . The opening 99 penetrates the first wall portion 56 in the moving directions (Y1, Y2). The opening 99 is arranged to face the first inspection hole 41 of the support portion 25 when viewed from the movement direction (Y1, Y2). The first inspection hole 41 is visible through the opening 99 . The opening 99 has a shape recessed from the end of the first wall portion 56 in the first support direction (Z1).

The first wall portion 56 extends to a position between the first inspection hole 41 and the second inspection hole 42 in the support direction (Z1, Z2). As viewed from the movement direction (Y1, Y2), the opening 99 is larger than the first inspection hole 41 in the lateral direction (X1, X2). Viewed from the movement direction (Y1, Y2), the opening 99 is smaller than the support portion 25 in the lateral direction (X1, X2). As seen from the movement direction (Y1, Y2), the opening 99 is larger than the first inspection hole 41 in the support direction (Z1, Z2).

The second wall portion 57 overlaps the support portion 25 when viewed from the movement direction (Y1, Y2). The second wall portion 57 is positioned in the first movement 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 direction (Z1, Z2). The second wall portion 57 overlaps the connecting portion 27 when viewed from the support directions (Z1, Z2). 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 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 apart from each other in the lateral direction (X1, X2). When the moving member 17 is in the closed position, the support portion 25 is positioned 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 positioned 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 movement 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 support 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 support direction (Z1, Z2). The third wall portion 58 overlaps the support portion 25 when viewed in the lateral direction (X1, X2). The third wall portion 58 is positioned in the first lateral direction (X1) with respect to the support portion 25 . The fourth wall portion 59 overlaps the support portion 25 when viewed from the lateral direction (X1, X2). The fourth wall portion 59 is positioned in the second horizontal direction (X2) with respect to the support portion 25 .

Base 11 includes a first recess 95 and a second recess 96 . The first recessed portion 95 and the second recessed portion 96 have a shape recessed in the first support direction (Z1). The first concave portion 95 is positioned in the first support direction (Z1) with respect to the first movable contact 31 . The first concave portion 95 overlaps the first movable contact 31 and the third movable contact 33 when viewed from the support direction (Z1, Z2). The second recess 96 is located in the first support direction (Z1) with respect to the second movable contact 32. As shown in FIG. The second concave portion 96 overlaps the second movable contact 32 and the fourth movable contact 34 when viewed from the support direction (Z1, Z2).

Base 11 includes a third recess 97 and a fourth recess 98 . The third recess 97 and the fourth recess 98 have shapes recessed in the first support direction (Z1). The third recessed portion 97 is positioned in the first support direction (Z1) with respect to the first fixed contact 21 . The third recessed portion 97 overlaps the first fixed contact 21 and the third fixed contact 23 when viewed from the support direction (Z1, Z2). The fourth recess 98 is located in the first support direction (Z1) with respect to the second fixed contact 22. As shown in FIG. The fourth recess 98 overlaps the second fixed contact 22 and the fourth fixed contact 24 when viewed from the support direction (Z1, Z2).

Next, operation of relay 1 will be described. When the coil 61 is not energized, the coil block 4 is not energized. In this case, the moving member 17 is pressed in the second movement direction (Y2) by the elastic forces of the return springs 53 and 54 together with the movable iron core 63, and the moving member 17 is positioned 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. As shown in FIG. Therefore, when the moving member 17 is at 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 at 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, the electromagnetic force of the coil 61 causes the movable core 63 to move in the first movement direction (Y1) against the elastic forces 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 movement direction (Y1). Accordingly, as shown in FIG. 6, the moving member 17 moves to the closed position. As a result, when the moving member 17 is at the closed position, 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 contact the third fixed contact 23 and the fourth fixed contact 24, respectively. Thereby, 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 demagnetized, the movable iron core 63 is pressed in the second moving direction (Y2) by the elastic forces of the return springs 53 and 54 . Thereby, the moving member 17, the first movable contact piece 15, and the second movable contact piece 16 all move in the second movement direction (Y2). Accordingly, as shown in FIG. 5, the moving member 17 moves to the open position. As a result, the moving member 17 is at the open position, and 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 at 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 this embodiment described above, the support portion 25 of the moving member 17 is stably supported by the base 11 . Also, the first wall portion 56 extends to a position overlapping the movable iron core 63 when viewed from the moving direction (Y1, Y2). Therefore, the first wall portion 56 prevents the moving member 17 from falling. Thereby, the moving member 17 can be stably moved. Furthermore, the inspection probe can reach the first movable contact piece 15 through the opening 99 of the first wall portion 56 and the first inspection hole 41 of the support portion 25 . Thereby, the energized state of the first movable contact piece 15 can be inspected while the contact block 2 is attached to the base 11 . Moreover, the inspection probe can reach the second movable contact piece 16 through the second inspection hole 42 . Thereby, the energized state of the second movable contact piece 16 can be inspected while the contact block 2 is attached to the base 11 .

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

In the above embodiment, the coil block 4 pushes the moving member 17 in the second movement direction (Y2), thereby separating the movable contacts 31-34 from the fixed contacts 21-24. Also, when the coil block 4 pulls the moving member 17 in the first movement direction (Y1), the movable contacts 31-34 come into contact with the fixed contacts 21-24. However, the movement 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 pushes the moving member 17 in the second moving direction (Y2), so that the movable contacts 31-34 may come into contact with the fixed contacts 21-24. The movable contacts 31-34 may be separated from the fixed contacts 21-24 by the coil block 4 pulling the moving member 17 in the first movement direction (Y1).

The shape or arrangement 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 directions different from the above embodiments. 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 an 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 be omitted.

The shape or arrangement of the coil 61, the spool 62, the movable core 63, the fixed 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 part of the first fixed terminal 13 and 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 part of the second fixed terminal 14 and flush with the rest 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 part of the first movable contact piece 15 and flush with the rest 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 part of the second movable contact piece 16 and flush with the rest 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 .

The shape of the base 11 may be changed. For example, the opening 99 of the first wall is not limited to the recessed shape described above, and may have another shape such as a hole. The opening 99 in the first wall may be omitted.

According to the present invention, by stably moving the moving member, the stability of the operation of the relay can be improved.

Reference Signs List 11 Base 13 First fixed terminal 14 Second fixed terminal 15 First movable contact piece 17 Moving member 21 First fixed contact 22... Second fixed contact, 25... Support portion, 27... Connecting portion, 31... First movable contact, 32... Second movable contact, 37... Core connecting portion, 55 ... Bottom surface 56 ... First wall portion 57 ... Second wall portion 61 ... Coil 63 ... Movable core 41 ... First inspection hole 99 ... Opening

Claims (9)

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;
a movable contact piece;
a first movable contact connected to the movable contact piece;
a second movable contact connected to the movable contact piece;
A closed position connected to the movable contact piece, in which the first movable contact contacts the first fixed contact and the second movable contact contacts the second fixed contact; and a closed position in which the first movable contact contacts the first fixed contact. a moving member movable to an open position where the second movable contact separates from the contact and separates from the second fixed contact;
a base that supports the moving member in a supporting direction perpendicular to the moving direction of the moving member;
a coil;
a movable iron core connected to the moving member and moved by the magnetic force generated by the coil;
with
the moving member includes a support that holds the movable contact piece,
The base is
a bottom surface;
a first wall extending from the bottom surface in the supporting direction and facing the moving member in the moving direction;
including
At least part of the first wall overlaps the movable core when viewed from the moving direction,
relay. The first wall portion extends at least to a height of a central position of the support portion in the support direction,
A relay according to claim 1. The first wall portion extends to a position beyond the movable contact piece in the support direction,
3. A relay according to claim 1 or 2. the support includes an inspection hole arranged to face the movable contact piece in the moving direction;
The first wall includes an opening arranged to face the inspection hole of the support in the moving direction,
A relay according to any one of claims 1 to 3. The opening has a shape recessed from the end of the first wall,
A relay according to claim 4. When viewed from the moving direction, the opening is larger than the inspection hole,
A relay according to claim 4 or 5. the base includes a second wall portion extending from the bottom surface in the supporting direction;
the second wall is spaced apart from the first wall in the direction of movement;
The support portion is arranged between the first wall portion and the second wall portion in the moving direction,
A relay as claimed in any one of claims 1 to 6. The first wall is higher than the second wall in the support direction,
A relay according to claim 7. The moving member is
a connecting portion connected to the movable core;
a connection portion that connects the support portion and the connection portion;
further comprising
When viewed from the supporting direction, the second wall portion overlaps the connecting portion,
A relay according to claim 7 or 8.

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