WO2020026478A1

WO2020026478A1 - Relay

Info

Publication number: WO2020026478A1
Application number: PCT/JP2019/005926
Authority: WO
Inventors: 弘一郎松島
Original assignee: オムロン株式会社
Priority date: 2018-07-31
Filing date: 2019-02-18
Publication date: 2020-02-06
Also published as: JP2020021584A

Abstract

A contact piece that includes an end section facing the tip of a movable body and extends from the end section, in the travel direction for the movable body. A fixed contact section is arranged facing a movable contact section, in a direction intersecting the travel direction of the movable body. A second terminal is separate to the contact piece. A coupling mechanism movably couples the contact piece to the second terminal. An actuator moves the contact piece such that a movable contact moves away from a fixed contact, by moving the movable body such that the tip of the movable body presses down on an end section of the contact piece.

Description

relay

The present invention relates to a relay.

(4) In a relay, a contact piece is contacted or separated by pressing a contact piece by a movable body and bending the contact piece. For example, in the relay of Patent Literature 1, when the actuator pushes the movable body, the movable body rotates, whereby the movable body pushes the contact piece. Thereby, the movable piece attached to the contact piece comes into contact with the fixed contact by bending the contact piece. In addition, when the movable body rotates in the opposite direction, the bending of the contact piece is released, and the contact piece returns to the original position. Thereby, the movable contact is separated from the fixed contact.

では In the above relay, the contact piece is composed of a plurality of laminated thin metal pieces. A movable contact is attached to one end of each metal piece, and the other end of each metal piece is fixed to a terminal by caulking. This allows the contact piece to flex well with respect to the terminal, so that a smooth opening and closing operation of the contact can be obtained.

JP-A-2017-107811

In a relay, the contacts may be welded due to the heat generated between the contacts. In order to separate the movable contact from the fixed contact when welding occurs, it is preferable to apply a large separation force to the movable contact.

However, in the above-mentioned relay, even if a large force is applied to the contact piece by the movable body, the contact piece is bent, so that the separation force acting on the movable contact is reduced. Therefore, in order to separate the movable contact from the fixed contact when welding occurs, a larger force is required to drive the contact piece.

An object of the present invention is to provide a relay that can smoothly open and close a contact and that can easily peel off the contact with a small driving force even if the welding of the contact occurs.

リレー A relay according to one aspect includes a movable body, an actuator, a contact piece, a movable contact portion, a fixed contact portion, a first terminal, a second terminal, and a coupling mechanism. The movable body is provided movably. The contact piece includes an end facing the tip of the movable body, and extends from the end in the moving direction of the movable body. The movable contact portion is attached to the contact piece. The fixed contact portion is disposed to face the movable contact portion in a direction intersecting the moving direction of the movable body. A fixed contact portion is attached to the first terminal. The second terminal is separate from the contact piece. The connection mechanism movably connects the contact piece to the second terminal. The actuator moves the contact piece such that the movable contact moves away from the fixed contact by moving the movable body such that the tip of the movable body presses the end of the contact piece.

In the relay according to this aspect, the connection mechanism movably connects the contact piece to the second terminal. Therefore, a smooth contact opening / closing operation can be obtained even when the contact piece has a small bending. In addition, by using a contact piece having a small rigidity and a high rigidity, a large divergence force can be applied to the movable contact with a small driving force when the welding of the contact occurs. Thus, the contact can be easily peeled off with a small driving force.

The contact piece may have higher rigidity than the coupling mechanism. In this case, the use of the contact piece having a small bending allows the contact to be easily peeled off even with a small driving force.

The coupling mechanism may include an elastic body that urges the contact piece. In this case, even if the elasticity of the contact piece is small, a restoring force can be applied to the contact piece by the urging force of the elastic body.

The coupling mechanism may be a leaf spring. In this case, the contact piece can be urged by the elastic force of the leaf spring.

板 The thickness of the contact piece may be larger than the thickness of the leaf spring. In this case, the use of the contact piece having a small bending allows the contact to be easily peeled off even with a small driving force.

The coupling mechanism may have conductivity. In this case, good conductivity can be obtained between the contact piece and the second terminal.

The movable body may be movable between an off position and an on position. When the movable body is at the off position, the movable body may separate the movable contact portion from the fixed contact portion by pressing the contact piece. When the movable body is at the ON position, the movable contact may contact the fixed contact. The actuator may move the movable body from the on position to the off position via the overshoot position. The overshoot position may be a position beyond the off position from the on position to the off position.

In this case, when the movable body moves from the ON position to the OFF position, it passes through the overshoot position beyond the OFF position. Therefore, the contact piece can be moved further. Therefore, when welding occurs, a larger deviation force can be applied to the movable contact. The contact piece is movably connected to the second terminal by a connection mechanism. Therefore, even if the contact piece moves largely, the load applied to the contact piece can be reduced as compared with the case where the contact piece is largely bent.

The movable contact section may include a first movable contact and a second movable contact. The second movable contact may be separate from the first movable contact. The fixed contact section may include a first fixed contact and a second fixed contact. The first fixed contact may face the first movable contact. The second fixed contact may face the second movable contact. In this case, the movable contact portion and the fixed contact portion contact at a plurality of contacts. As a result, it is possible to prevent the contact from being biased.

The contact piece may include a first contact piece and a second contact piece. The first movable contact may be attached to the first contact piece. The second contact piece may be separate from the first contact piece. A second movable contact may be attached to the second contact piece. The connection mechanism may include a first connection portion and a second connection portion. The first connecting portion may movably connect the first contact piece to the second terminal. The second connecting portion may movably connect the second contact piece to the second terminal. In this case, uneven contact of the contact can be more effectively prevented.

According to the present invention, a smooth contact opening / closing operation can be obtained, and even if welding of the contacts occurs, the contacts can be easily peeled off with a small driving force.

It is a perspective view of the relay concerning an embodiment. It is a top view of a relay. It is an enlarged view of the 1st terminal, the 2nd terminal, and the contact piece. It is a perspective view of a contact piece and a 2nd terminal. It is a perspective view of a contact piece and a 2nd terminal. It is an exploded perspective view of a contact piece and a 2nd terminal. FIG. 4 is a diagram illustrating an operation state of a relay. It is sectional drawing of an actuator. It is an enlarged side view of a holding mechanism and a movable body. It is a perspective view of a holding mechanism and a movable body. It is a perspective view of a holding member. It is sectional drawing which shows the operation state of an actuator. It is a perspective view of a contact piece and a 2nd terminal concerning a modification.

Hereinafter, the relay 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. FIG. 2 is a plan view of the relay 1. As shown in FIGS. 1 and 2, the relay 1 includes a case 2, a first terminal 3, a second terminal 4, a contact piece 5, a movable body 6, an actuator 7, a fixed contact portion 8, And a movable contact portion 9.

The case 2 houses the first terminal 3, the second terminal 4, the contact piece 5, and the actuator 7. One surface of the case 2 is open, and the opening of the case 2 is covered by a cover (not shown). The case 2 has a shape that is long in the axial direction of the actuator 7.

In the following description, the axial direction means a direction parallel to the axis of the actuator 7. The axial direction may be referred to as the longitudinal direction of the relay 1. Further, the lateral direction of the relay 1 is a direction intersecting with the axial direction, and means a direction in which the fixed contact portion 8 and the movable contact portion 9 are arranged. The height direction of the relay 1 means a direction crossing the axial direction and the lateral direction of the relay 1.

The first terminal 3 is formed of a conductive material such as copper. The first terminal 3 is a bent plate-shaped member. At least a part of the first terminal 3 extends in the axial direction. A fixed contact portion 8 is attached to one end of the first terminal 3. The other end of the first terminal 3 projects outside from the case 2.

FIG. 3 is an enlarged view of the first terminal 3, the second terminal 4, and the contact piece 5. In FIG. 3, a part of the first terminal 3 is omitted for easy understanding. As shown in FIG. 3, the first terminal 3 includes a first plate part 31, a second plate part 32, and a third plate part 33. The first plate portion 31 and the third plate portion 33 extend in the axial direction. The second plate portion 32 extends in the lateral direction of the relay 1. The second plate portion 32 connects the first plate portion 31 and the second plate portion 32. The fixed contact portion 8 is attached to the first plate portion 31. The distal end of the third plate portion 33 protrudes from the case 2 toward the outside of the case 2 in the axial direction. The first terminal 3 has a shape bent between the first plate portion 31 and the second plate portion 32. The first terminal 3 has a shape bent between the second plate portion 32 and the third plate portion 33.

The second terminal 4 is formed of a conductive material such as copper. The second terminal 4 is a bent plate-shaped member. At least a part of the second terminal 4 extends in the axial direction. A contact piece 5 is attached to one end of the second terminal. The other end of the second terminal 4 protrudes from the case 2 to the outside.

Specifically, the second terminal 4 includes a first plate portion 41 and a second plate portion 42. The first plate portion 41 extends in the lateral direction of the relay 1. The second plate 42 is connected to the first plate 41. The second plate portion 42 extends in the axial direction. The second terminal 4 has a shape bent between the first plate portion 41 and the second plate portion 42. The contact piece 5 is attached to the tip of the first plate portion 41. The tip of the second plate portion 42 projects axially from the case 2 toward the outside of the case 2.

The contact piece 5 is formed of a conductive material such as copper. The movable piece 9 is attached to the contact piece 5. The movable contact portion 9 is arranged in the lateral direction of the relay 1 so as to face the fixed contact portion 8. FIG. 4 and FIG. 5 are perspective views of the contact piece 5 and the second terminal 4. As shown in FIGS. 4 and 5, the movable contact section 9 includes a first movable contact 9a and a second movable contact 9b. The second movable contact 9b is separate from the first movable contact 9a. The first movable contact 9a and the second movable contact 9b are arranged apart from each other in the height direction of the case 2. As shown in FIG. 1, the fixed contact section 8 includes a first fixed contact 8a and a second fixed contact 8b. The first fixed contact 8a faces the first movable contact 9a. The second fixed contact 8b faces the second movable contact 9b.

可動 As shown in FIG. 3, the movable body 6 is arranged to face the tip of the contact piece 5. The movable body 6 protrudes from the actuator 7 in the axial direction. The movable body 6 has a shape extending linearly in the axial direction. The movable body 6 is provided so as to be linearly movable in the axial direction.

Contact piece 5 includes first end 13 and second end 14. The first end 13 is arranged to face the tip of the movable body 6. The contact piece 5 extends in the axial direction from the first end 13. The second end 14 is connected to the first plate 41 of the second terminal 4.

The first end 13 includes the inclined surface 15. The inclined surface 15 is inclined with respect to the axial direction. As shown in FIGS. 4 and 5, the first end portion 13 has a convex shape protruding from the contact piece 5 in the axial direction. When the tip of the movable body 6 presses the inclined surface 15, the contact piece 5 moves in a direction in which the movable contact 9 moves away from the fixed contact 8.

FIG. 6 is an exploded perspective view of the contact piece 5 and the second terminal 4. The contact piece 5 is separate from the second terminal 4 and is movably connected to the second terminal 4. The contact piece 5 is connected to the second terminal 4 via a connection mechanism 16. The connection mechanism 16 movably connects the contact piece 5 to the second terminal 4. Specifically, the connection mechanism 16 rotatably connects the contact piece 5 to the second terminal 4. The connection mechanism 16 is made of metal and has conductivity.

Specifically, the connection mechanism 16 is a leaf spring that biases the contact piece 5. The contact piece 5 has greater rigidity than the coupling mechanism 16. In other words, the elastic modulus of the contact piece 5 is larger than the elastic modulus of the connecting mechanism 16. Therefore, when the contact piece 5 is pressed by the movable body 6, the connection mechanism 16 bends more than the contact piece 5. At this time, the contact piece 5 hardly bends or slightly bends. That is, the contact piece 5 is moved by the elastic deformation of the coupling mechanism 16.

ときに When the movable contact portion 9 is separated from the fixed contact portion 8, the contact piece 5 is urged by the elastic force of the connecting mechanism 16 in a direction in which the movable contact portion 9 approaches the fixed contact portion 8. The thickness of the contact piece 5 is larger than the thickness of the connecting mechanism 16. The thickness of the contact piece 5 is substantially the same as the thickness of the second terminal 4. The connection mechanism 16 includes a first mounting portion 17, a second mounting portion 18, and a connecting portion 19.

The first mounting portion 17 is fixed to the contact piece 5. The second mounting part 18 is fixed to the second terminal 4. Specifically, the second mounting portion 18 is fixed to the first plate portion 41 of the second terminal 4. For example, the first mounting portion 17 is fixed to the contact piece 5 by welding. The second mounting portion 18 is fixed to the first plate portion 41 by welding. However, the first mounting portion 17 and the second mounting portion 18 may be fixed by fixing means other than welding, respectively. For example, the first mounting portion 17 and the second mounting portion 18 may be fixed by caulking, respectively. The connecting part 19 connects the first mounting part 17 and the second mounting part 18. The connecting portion 19 has a curved shape.

先端 As shown in FIG. 6, the tip of the second terminal 4 includes a recess 21. Specifically, the tip of the first plate portion 41 of the second terminal 4 includes the concave portion 21. The second end 14 of the contact piece 5 has a convex shape. The second end 14 is disposed in the recess 21. More specifically, as shown in FIGS. 5 and 6, the tip of the first plate portion 41 includes a first protrusion 22 and a second protrusion 23. The second end 14 is disposed between the first protrusion 22 and the second protrusion 23. Thereby, the movement of the contact piece 5 in the height direction of the case 2 is restricted. In addition, the tip of the first plate portion 41 may be provided in a convex shape, and the concave portion may be provided in the second end portion 14 of the contact piece 5.

弾性 Elastic member 24 is attached to contact piece 5 and second terminal 4. The elastic member 24 urges the contact piece 5 against the second terminal 4. The elastic member 24 urges the contact piece 5 in a direction in which the movable contact 9 approaches the fixed contact 8. In the present embodiment, the elastic member 24 is a coil spring. However, the elastic member 24 is not limited to a coil spring, and may be another member such as a leaf spring. Alternatively, the elastic member 24 may be omitted.

The contact piece 5 includes the first locking portion 25. The second terminal 4 includes a second locking portion 26. The elastic member 24 is attached to the contact piece 5 by engaging the first engaging portion 25. The elastic member 24 is attached to the second terminal 4 by being locked by the second locking portion 26. An opening 27 is provided in the contact piece 5, and the first locking portion 25 is a projection provided in the opening 27. The second locking portion 26 is a protrusion that protrudes from the second plate portion 42 in the axial direction. However, the structure of the first locking portion 25 and / or the second locking portion 26 may be changed.

Next, the actuator 7 will be described. The actuator 7 rotates the contact piece 5 with respect to the second terminal 4 by moving the movable body 6 in the axial direction and pressing the inclined surface 15 of the contact piece 5. FIG. 7A shows the relay 1 in the set state. FIG. 7B shows the relay 1 in the reset state. The movable body 6 is provided movably between an on position shown in FIG. 7A and an off position shown in FIG. 7B.

可動 As shown in FIG. 7A, when the movable body 6 is in the ON position, the movable body 6 is separated from the inclined surface 15. Therefore, the movable contact portion 9 is in contact with the fixed contact portion 8 by the urging force of the connecting mechanism 16 and the elastic member 24, and the relay 1 is in the set state. Note that the movable body 6 may be in contact with the inclined surface 15 at the off position.

As shown in FIG. 7B, the movable body 6 moves from the ON position to the OFF position by moving in the axial direction from the actuator 7 toward the first end 13 of the contact piece 5. The movable body 6 presses the inclined surface 15 by moving to the off position. Thereby, the movable body 6 rotates the contact piece 5 against the urging force of the connecting mechanism 16 and the elastic member 24. As a result, the movable contact 9 is separated from the fixed contact 8, and the relay 1 is reset. When the movable body 6 moves from the off position to the on position, the movable body 6 rotates in the opposite direction due to the urging force between the coupling mechanism 16 and the elastic member 24. Thereby, the movable contact 9 contacts the fixed contact 8, and the relay 1 returns to the set state.

The actuator 7 moves the movable body 6 between the ON position and the OFF position. FIG. 8 is a sectional view of the actuator 7. As shown in FIG. 8, the actuator 7 includes a coil unit 70, a drive shaft 72, and a holding mechanism 73. The coil unit 70 includes a coil 74, a bobbin 75, an iron core 76, and a yoke 71. The coil 74 is wound around a bobbin 75. The coil 74 is connected to a coil terminal (not shown). The axial direction of the actuator 7 means the axial direction of the coil 74.

The iron core 76 is inserted into a hole of the bobbin 75 extending in the axial direction. The iron core 76 extends in the axial direction of the actuator 7. The yoke 71 is connected to one end and the other end of the iron core 76. The drive shaft 72 is inserted into a hole of the iron core 76. The drive shaft 72 is connected to the above-described movable body 6 via a holding mechanism 73.

The coil unit 70 generates a magnetic force so as to move the drive shaft 72 in the axial direction of the actuator 7 by applying a voltage to the coil 74 via the coil terminal. Thereby, the actuator 7 moves the contact piece 5 so that the tip of the movable body 6 presses the first end portion 13 of the contact piece 5 so that the movable contact portion 9 is separated from the fixed contact portion 8.

The holding mechanism 73 transmits the operation of the drive shaft 72 to the movable body 6 to move the movable body 6 between the ON position shown in FIG. 7A and the OFF position shown in FIG. 7B. The holding mechanism 73 mechanically holds the movable body 6 at the ON position and the OFF position in a state where no voltage is applied to the coil unit 70. The holding mechanism 73 includes a pusher 77, a rotor 78, a holding member 79, and a lid 80.

FIG. 9 is an enlarged side view of the holding mechanism 73 and the movable body 6. FIG. 10 is a perspective view of the holding mechanism 73 and the movable body 6. FIG. 11 is a perspective view of the holding member 79. As shown in FIGS. 8 to 10, the pusher 77 is connected to the drive shaft 72. The pusher 77 moves in the axial direction together with the drive shaft 72. A plurality of convex portions 81 are provided on the outer peripheral surface of the pusher 77. The plurality of protrusions 81 are arranged at intervals in the circumferential direction of the pusher 77. Each of the plurality of convex portions 81 extends in the axial direction. As shown in FIG. 9, a plurality of inclined surfaces 82 are provided at the end of the pusher 77.

The rotor 78 is separate from the pusher 77. The rotor 78 is connected to the movable body 6. The rotor 78 may be separate from the movable body 6. Alternatively, the rotor 78 may be formed by integrally molding the movable body 6. The rotor 78 includes a main body cylindrical portion 84, a support shaft 85, and a plurality of convex portions 86. The support shaft 85 extends from the main body cylindrical portion 84 in the axial direction. The support shaft 85 is rotatably supported on the pusher 77 around the axis. The plurality of convex portions 86 are provided on the outer peripheral surface of the main body cylindrical portion 84. The plurality of projections 86 are arranged at intervals in the circumferential direction of the rotor 78. The plurality of protrusions 86 each extend in the axial direction. Rotor 78 includes a plurality of inclined surfaces 87. The plurality of inclined surfaces 87 are provided at an end of the main body tube portion 84. The plurality of inclined surfaces 87 of the rotor 78 are opposed to the plurality of inclined surfaces 82 of the pusher 77 in the axial direction.

保持 As shown in FIG. 11, the holding member 79 includes a hole 88. The hole 88 penetrates the holding member 79 in the axial direction. A plurality of first guide grooves 91 and second guide grooves 92 are provided on the inner peripheral surface of the hole 88. The plurality of first guide grooves 91 and the plurality of second guide grooves 92 are spaced from each other in the circumferential direction of the hole 88. The plurality of first guide grooves 91 and the plurality of second guide grooves 92 extend in the axial direction. A plurality of first convex portions 93 and a plurality of second convex portions 94 are provided on the inner peripheral surface of the hole 88 of the holding member 79.

The plurality of first protrusions 93 and the plurality of second protrusions 94 project radially inward from the inner peripheral surface of the hole 88. The plurality of first protrusions 93 and the plurality of second protrusions 94 are arranged between the plurality of first guide grooves 91 in the circumferential direction of the hole 88. Each of the plurality of first convex portions 93 includes a first inclined surface 93a. The first inclined surface 93a is inclined with respect to the axial direction. Each of the plurality of second convex portions 94 includes a second inclined surface 94a. The second inclined surface 94a is inclined with respect to the axial direction. A locking step 95 is provided between the first inclined surface 93a and the second inclined surface 94a.

The movable body 6 and the pusher 77 are arranged in the hole 88 of the holding member 79. When the movable body 6 moves in the axial direction, the convex portion 86 of the rotor 78 is guided along the first guide groove 91. When the pusher 77 moves in the axial direction, the protrusion 81 of the pusher 77 is guided along the first guide groove 91 and the second guide groove 92.

蓋 As shown in FIG. 8, the lid 80 is attached to the tip of the holding member 79. A hole 96 is provided in the lid 80. The movable body 6 is inserted into a hole 96 of the lid 80. The movable body 6 includes a flange portion 61. The flange portion 61 protrudes radially outward from the outer peripheral surface of the movable body 6. An elastic member 62 is arranged between the flange 61 and the lid 80. The elastic member 62 urges the movable body 6 in a direction from the off position to the on position.

Next, the operation of the actuator 7 will be described. FIG. 12 is a cross-sectional view illustrating an operation state of the actuator 7. The actuator 7, the movable member 6, from the on position _{P ON} shown in FIG. 12A, through an overshoot position _{P OV} shown in FIG. 12B, is moved to the off position _{P OFF} shown in FIG. 12C. Overshoot position _{P OV} is a position beyond the off position _{P OFF} toward the off position _{P OFF} from the ON position _{P ON.} The actuator 7, the movable member 6, from the off position _{P OFF} shown in FIG. 12C, through an overshoot position _{P OV} shown in FIG. 12B, is moved to the ON position _{P ON} shown in FIG. 12A.

In the following description, the OFF direction means a direction from the _ON position _PON to the OFF position _POFF . The _ON direction means a direction from the _OFF position P _OFF to the ON position PON.

In the on position _{P ON} shown in FIG. 12A, the convex portion 86 of the rotor 78 is disposed in the first guide groove 91 of the holding member 79. When a voltage is applied to the actuator 7, the drive shaft 72 moves in the off direction, so that the pusher 77 also moves in the off direction. Thereby, the pusher 77 presses the rotor 78 in the off direction. Thereby, the rotor 78 moves from the _ON position _PON to the OFF position _POFF . At this time, the inclined surface 82 of the pusher 77 presses the inclined surface 87 of the rotor 78.

When the convex portion 86 of the rotor 78 moves to a position beyond the first guide groove 91, the rotor 78 can rotate around the axis. Therefore, the inclined surface 87 of the rotor 78 slides with respect to the inclined surface 82 of the pusher 77, so that the rotor 78 rotates around the axis. The rotor 78 by being pressed by the pusher 77, further moves to the off-direction, and reaches the overshoot position P _OV as shown in FIG. 12B.

Thereafter, when the voltage to the actuator 7 is released, the movable body 6 moves from the overshoot position _{POV in the} ON direction by the elastic force of the elastic member 62. However, due to the rotation of the rotor 78 as described above, the protrusion 86 of the rotor 78 has moved from a position facing the first guide groove 91 to a position facing the first inclined surface 93a. Therefore, the protrusion of the rotor 78 is locked to the first inclined surface 93a, so that the movement of the rotor 78 in the ON direction is restricted. Thereby, the movable body 6 is held at the off position P _OFF as shown in FIG. 12C. In this state, the rotation of the rotor 78 is regulated by the locking step 95.

Next, as shown in FIG. 12C, when a voltage is applied to the actuator 7 in a state where the movable body 6 is located at the off position P _OFF , the drive shaft 72 moves in the off direction, and the pusher 77 is moved. Also move in the off direction. Thereby, the pusher 77 presses the rotor 78 in the off direction. Thereby, the rotor 78 moves from the off position P _OFF toward the overshoot position _POV . At this time, the inclined surface 82 of the pusher 77 presses the inclined surface 87 of the rotor 78.

When the protrusion 86 of the rotor 78 moves to a position beyond the locking step 95, the rotor 78 can rotate around the axis. Therefore, the inclined surface 87 of the rotor 78 slides with respect to the inclined surface 82 of the pusher 77, so that the rotor 78 rotates around the axis. The rotor 78 by being pressed by the pusher 77, further moves to the off-direction, and reaches the overshoot position P _OV as shown in FIG. 12B.

Thereafter, when the voltage to the actuator 7 is released, the movable body 6 moves from the overshoot position _{POV in the} ON direction by the elastic force of the elastic member 62. However, due to the rotation of the rotor 78 as described above, the convex portion 86 of the rotor 78 has moved from a position facing the first inclined surface 93a to a position facing the second inclined surface 94a. Therefore, the convex portion 86 of the rotor 78 contacts the second inclined surface 94a. Then, when the convex portion 86 of the rotor 78 slides with respect to the second inclined surface 94a, the rotor 78 further rotates, and the convex portion 86 of the rotor 78 faces the first guide groove 91. Move to the position you want. Thereby, the convex portion 86 of the rotor 78 moves in the ON direction along the first guide groove 91, and the movable body 6 returns to the _ON position PON. Then, the movable body 6 is held at the _ON position PON by the urging force of the elastic member 62.

As described above, in the relay 1 according to the present embodiment, the movable body 6 is held at the _ON position PON by the elastic member 62. Further, the movable body 6 is held at the off position P _OFF by locking the rotor 78 to the holding member 79. That is, in a state where the voltage to the actuator 7 is not applied, the movable member 6 is held in each of the mechanically on position P _ON and OFF position P _OFF rather than force. Therefore, the relay 1 can be maintained in the reset state and the set position without applying a voltage to the coil 74.

In the relay 1 according to the present embodiment described above, the connection mechanism 16 movably connects the contact piece 5 to the second terminal 4. Therefore, a smooth contact opening / closing operation can be obtained even if the contact piece 5 is less bent. In addition, by using the contact piece 5 having high rigidity and low bending, a large diverging force can be applied to the movable contact with a small driving force when the welding of the contact occurs. Thus, the contact can be easily peeled off with a small driving force.

Movable member 6, when moving from the ON position _{P ON} OFF position _{P OFF,} via an overshoot position _{P OV} beyond the off position _{P OFF.} Therefore, the contact piece 5 can be moved further in the direction in which the movable contact portion 9 moves away from the fixed contact portion 8. Therefore, when welding occurs, a larger deviation force can be applied to the movable contact. The contact piece 5 is movably connected to the second terminal 4 by a connection mechanism 16. Therefore, even if the contact piece 5 is moved further, the load applied to the contact piece 5 can be reduced as compared with the case where the contact piece 5 is largely bent.

The coupling mechanism 16 has conductivity. Therefore, although the contact piece 5 and the second terminal 4 are separate bodies, good conductivity can be obtained between the contact piece 5 and the second terminal 4.

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

構成 The configuration of the relay 1 may be changed. For example, the number of movable contacts and the number of fixed contacts are not limited to two, but may be one. Alternatively, the number of movable contacts and fixed contacts may be more than two.

構成 The configuration of the case 2 is not limited to the above-described embodiment, and may be changed. The configuration of the movable body 6 is not limited to the above-described embodiment, and may be changed. The configuration of the actuator 7 is not limited to the above-described embodiment, and may be changed. The configuration of the holding mechanism 73 is not limited to the above-described embodiment, and may be changed.

The configurations of the first terminal 3 and the second terminal 4 are not limited to those of the above-described embodiment, and may be changed. For example, the arrangement of the first terminal 3 and / or the second terminal 4 in the case 2 may be changed. The first terminal 3 and the second terminal 4 may protrude from the case 2 in a lateral direction of the relay 1. Alternatively, the first terminal 3 and the second terminal 4 may have a shape protruding from the case 2 in the axial direction and bent laterally outside the case 2.

構成 The configuration related to the contact piece 5 is not limited to the above-described embodiment, and may be changed. For example, the connection mechanism 16 is not limited to a leaf spring and may be another member. The inclined surface 15 may be provided such that when the inclined surface 15 is pressed by the movable body 6, the contact piece 5 moves in a direction in which the movable contact 9 approaches the fixed contact 8. The thickness of the contact piece 5 may be larger than the thickness of the second terminal 4. The thickness of the contact piece 5 may be smaller than the thickness of the second terminal 4.

FIG. 13 is a perspective view showing a contact piece 5 according to a modification. As shown in FIG. 13, the contact piece 5 may be configured to be divided into a first contact piece 5a and a second contact piece 5b. The first movable contact 9a is attached to the first contact piece 5a. The second contact piece 5b is separate from the first contact piece 5a. The second movable contact 9b is attached to the second contact piece 5b. The connection mechanism 16 includes a first connection portion 16a and a second connection portion 16b. The first connecting portion 16a movably connects the first contact piece 5a to the second terminal 4. The second connecting portion 16b movably connects the second contact piece 5b to the second terminal 4. The first connecting portion 16a and the second connecting portion 16b are each a leaf spring having conductivity. In the contact piece 5 according to such a modified example, it is possible to effectively prevent uneven contact of the contact.

3 First terminal 4 Second terminal 6 Movable body 5 Contact piece 5a First contact piece 5b Second contact piece
7 Actuator 8 Fixed contact part 8a First fixed contact 8b Second fixed contact 9 Movable contact part 9a First movable contact 9b Second movable contact 16 Connection mechanism 16a First connection part 16b Second connection part P _OFF off position P _ON on Position _POV overshoot position

Claims

A movable body movably provided;
A contact piece that includes an end facing the tip of the movable body and extends from the end in the moving direction of the movable body;
A movable contact portion attached to the contact piece;
A fixed contact portion disposed opposite to the movable contact portion in a direction intersecting the moving direction of the movable body,
A first terminal to which the fixed contact portion is attached;
A second terminal separate from the contact piece;
A connection mechanism for movably connecting the contact piece to the second terminal;
An actuator that moves the contact piece so that the movable contact moves away from the fixed contact by moving the movable body so that the tip of the movable body presses the end of the contact piece,
A relay equipped with.
The contact piece has a higher rigidity than the connection mechanism,
The relay according to claim 1.
The connection mechanism includes an elastic body for urging the contact piece,
The relay according to claim 1.
The connection mechanism is a leaf spring,
The relay according to claim 3.
The thickness of the contact piece is greater than the thickness of the leaf spring.
The relay according to claim 4.
The coupling mechanism has conductivity,
The relay according to claim 1.
The movable body moves to an off position in which the movable body presses the contact piece to separate the movable contact portion from the fixed contact portion and an on position in which the movable contact portion contacts the fixed contact portion. Is possible,
The actuator moves the movable body from the on position, toward the off position, through an overshoot position beyond the off position, to the off position,
The relay according to claim 1.
The movable contact portion,
A first movable contact;
A second movable contact separate from the first movable contact;
Including
The fixed contact portion,
A first fixed contact facing the first movable contact;
A second fixed contact facing the second movable contact;
including,
The relay according to claim 1.
The contact piece,
A first contact piece to which the first movable contact is attached;
A second contact piece that is separate from the first contact piece and has the second movable contact attached thereto;
Including
The connection mechanism,
A first connecting portion that movably connects the first contact piece to the second terminal;
A second connecting portion that movably connects the second contact piece to the second terminal;
including,
A relay according to claim 8.