Relay

Abstract

A relay, in the relay of the present invention, a driving device includes a bobbin, a coil wound on the bobbin, a movable iron core connected to a moving part, a fixed iron core arranged opposite to the movable iron core inside the bobbin, and a guide part arranged inside the bobbin and accommodating at least a part of the movable iron core, and the driving device moves the first movable contact piece by moving the movable iron core based on the magnetic force generated from the coil. The guide part includes a guide part and a retreat part, and the guide part guides the movement of the movable iron core. The inner diameter of the retreat part is larger than the inner diameter of the guide part, and when the movable iron core moves, the retreat part suppresses the interference between the outer end of the movable iron core and the guide part.

Description

Technical Field

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

[0002] The plunger relay includes a pair of fixed contacts, a movable contact piece, and a drive device. For example, in the relay disclosed in Japanese Patent Publication No. 2012-199110, the movable contact piece has a pair of movable contacts. The pair of movable contacts are arranged to be separated from each other in the length direction of the movable contact piece. The pair of movable contacts are arranged opposite to the pair of fixed contacts.

[0003] The driving device moves the movable contact piece. The driving device includes a coil and a movable iron core. The movable contact piece is connected to the movable iron core via a driving shaft. The movable iron core moves by the magnetic force generated by the coil, thereby moving the movable contact piece. The movable iron core is accommodated in a guide component made of a non-magnetic body and moves along the guide component.

[0004] In the above relay, when the movable iron core moves by the magnetic force generated by the coil, if the movable iron core is inclined relative to the guide member, the end of the movable iron core interferes with the guide member, and the movable iron core or the guide member is cut. Summary of the invention

[0005] An object of the present invention is to suppress interference between a movable iron core and a guide member.

[0006] A relay according to one embodiment includes a first fixed terminal, a first fixed contact, a second fixed terminal, a second fixed contact, a first movable contact piece, a moving component, and a driving device. 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 first movable contact piece and is opposite to the first fixed contact. The second movable contact is connected to the first movable contact piece and is opposite to the second fixed contact. The moving component is connected to the first movable contact piece in a manner that it can move in a contact direction in which the first movable contact contacts the first fixed contact and in a separation direction in which the first movable contact separates from the first fixed contact. The driving device includes a bobbin, a coil, a movable iron core, a fixed iron core, and a guide component. The coil is wound on the bobbin. The movable iron core is connected to the moving component. The fixed iron core is arranged opposite to the movable iron core inside the bobbin. The guide component is arranged inside the bobbin and accommodates at least a portion of the movable iron core. The driving device moves the movable iron core according to the magnetic force generated from the coil, thereby moving the first movable contact piece. The guide component includes a guide portion and a retreat portion. The guide portion guides the movement of the movable iron core. The inner diameter of the escape portion is larger than the inner diameter of the guide portion. The escape portion suppresses interference between the outer end portion of the movable iron core on the contact direction side and the guide portion when the movable iron core moves.

[0007] In the relay of this mode, since the inner diameter of the retreat portion is larger than the inner diameter of the guide portion, the outer end of the movable iron core on the contact direction side is moved to the retreat portion when the movable iron core moves, thereby suppressing the interference between the outer end of the movable iron core on the contact direction side and the guide portion. Thus, it is possible to suppress the movable iron core or the guide member from being cut due to the interference between the movable iron core and the guide member.

[0008] When the first movable contact contacts the first fixed contact, the outer end portion may be located in the retreat portion. In this case, when the movable iron core moves and the first movable contact contacts the first fixed contact, the outer end portion of the movable iron core is located in the retreat portion, thereby effectively preventing the movable iron core from interfering with the guide member.

[0009] The outer diameter of the fixed iron core may be larger than the outer diameter of the movable iron core. In this case, since the fixed iron core can be arranged at a position closer to the coil than the movable iron core, the magnetic attraction force can be increased.

[0010] The relay may also include a yoke disposed around the bobbin. The outer diameter of the retreat portion may be larger than the outer diameter of the guide portion. The guide component may also include a connecting portion connecting the guide portion and the retreat portion. A portion of the yoke may also extend along the guide portion to the connecting portion. In this case, an increase in magnetic attraction can be achieved, and the guide component can be prevented from falling off by the yoke.

[0011] The outer diameter of the retreat portion is smaller than the outer diameter of the fixed iron core. In this case, the magnetic force of the coil can be effectively transmitted to the movable iron core.

[0012] The guide member may not be arranged between the bobbin and the fixed core. In this case, since the fixed core can be arranged at a position close to the coil, the magnetic attraction force can be increased.

[0013] A space may be provided between the guide member and the bobbin. In this case, the magnetic force of the coil can be effectively transmitted to the movable iron core.

[0014] The inner surface of the bobbin may extend linearly over the entire length of the moving direction of the movable iron core. In this case, the magnetic attraction force can be increased compared to the case where a step portion is provided on the inner surface of the bobbin.

[0015] At least one of the guide member and the movable iron core may be lubricated. In this case, it is possible to further prevent the outer end of the movable iron core from interfering with the guide portion and causing the movable iron core or the guide member to be cut. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 is a top view of the relay with the moving parts in the off position.

[0018] Figure 3 It is a longitudinal cross-sectional view of the relay.

[0019] Figure 4 It is a three-dimensional diagram of the moving parts and their surroundings.

[0020] Figure 5 It is a magnified representation Figure 3 A diagram of the guide component surrounding.

[0021] Figure 6 is a top view of the relay with the moving part in the closed position. DETAILED DESCRIPTION

[0022] 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 is a top view of the relay 1. Figure 3 It is a longitudinal sectional view of the relay 1.

[0023] The relay 1 includes a contact device 2, a housing 3, and a drive device 4. The contact device 2, the drive device 4, and the elastic body 7 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 as well as Figure 2 In the embodiment, the housing 12 is omitted.

[0024] In addition, in the following description, the direction in which the contact device 2 and the drive device 4 are arranged relative to the base 11 is defined as the upper direction, and the opposite direction is defined as the lower direction. In addition, the prescribed direction intersecting the up-down direction (Z) is defined as the front-back direction (Y). The prescribed direction intersecting the up-down direction (Z) and the front-back direction (Y) is defined as the left-right direction (X). However, these directions are defined for the convenience of description and do not limit the arrangement direction of the relay 1.

[0025] The contact device 2 includes a first fixed terminal 13, a second fixed terminal 14, a first fixed contact 21, a second fixed contact 22, a third fixed contact 23, and a fourth fixed contact 24. 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 up-down direction (Z), respectively. The first fixed terminal 13 and the second fixed terminal 14 are arranged to be separated from each other in the left-right direction (X). The first fixed terminal 13 and the second fixed terminal 14 are supported by the base 11.

[0026] The first fixed terminal 13 includes a first contact support portion 131 and a first external terminal portion 132. The second fixed terminal 14 includes a second contact support portion 141 and a second external terminal portion 142 (see Figure 3 ). The first contact support portion 131 and the second contact support portion 141 are disposed in the housing 3. The first external terminal portion 132 and the second external terminal portion 142 protrude to the outside of the housing 3. The first external terminal portion 132 and the second external terminal portion 142 protrude downward from the base 11.

[0027] The first fixed contact 21 and the third fixed contact 23 are connected to the first contact support portion 131. The first fixed contact 21 and the third fixed contact 23 are separate from the first fixed terminal 13. 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 up-down direction (Z).

[0028] The second fixed contact 22 and the fourth fixed contact 24 are arranged separately from the first fixed contact 21 and the third fixed contact 23 in the left-right direction (X). The second fixed contact 22 and the fourth fixed contact 24 are connected to the second contact support portion 141. The second fixed contact 22 and the fourth fixed contact 24 are separate from the second fixed terminal 14. In the second fixed terminal 14, the second fixed contact 22 and the fourth fixed contact 24 are arranged separately from each other in the up-down direction (Z). The first fixed contact 21 to the fourth fixed contact 24 are formed of a conductive material such as silver or copper.

[0029] The contact device 2 includes a first movable contact piece 15, a second movable contact piece 16, a first movable contact 31, a second movable contact 32, a third movable contact 33, and a fourth movable contact 34. The first movable contact piece 15 and the second movable contact piece 16 extend in the left-right direction (X). The length direction of the first movable contact piece 15 and the second movable contact piece 16 is consistent with the left-right direction (X). 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 to be separated from each other in the up-down direction (Z).

[0030] The second movable contact piece 16 is arranged above the first movable contact piece 15. The first movable contact piece 15 is arranged between the second movable contact piece 16 and the base 11 in the up-down direction (Z). The first movable contact piece 15 and the second movable contact piece 16 are arranged opposite to the first contact support portion 131 of the first fixed terminal 13 and the second contact support portion 141 of the second fixed terminal 14 in the front-back direction (Y). The first movable contact piece 15 and the second movable contact piece 16 are formed of a conductive material such as copper.

[0031] The first movable contact 31 and the second movable contact 32 are separate from the first movable contact piece 15. 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 separately in the left-right direction (X). 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.

[0032] The third movable contact 33 and the fourth movable contact 34 are separate from the second movable contact piece 16. 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 separately arranged in the left-right direction (X). The third movable contact 33 is separately arranged from the first movable contact 31 in the up-down direction (Z). The fourth movable contact 34 is separately arranged from the second movable contact 32 in the up-down direction (Z). 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.

[0033] The contact device 2 includes a movable member 17. The movable member 17 is made of an insulating material such as resin. The movable member 17 is connected to the first movable contact piece 15 and the second movable contact piece 16. The first movable contact piece 15 is connected to the movable member 17 between the first movable contact 31 and the second movable contact 32. The first movable contact piece 15 is connected to the movable member 17 via a first contact spring 51 described later. The second movable contact piece 16 is connected to the movable member 17 between the third movable contact 33 and the fourth movable contact 34. The second movable contact piece 16 is connected to the movable member 17 via a second contact spring 52 described later. In addition, the first movable contact piece 15 and the second movable contact piece 16 may also be directly connected to the movable member 17.

[0034] The movable member 17 is configured to be movable in a contact direction (Y1) in which the first movable contact 31 contacts the first fixed contact 21 and a separation direction (Y2) in which the first movable contact 31 separates from the first fixed contact 21. The contact direction (Y1) and the separation direction (Y2) are examples of the moving direction of the movable member 17. The contact direction (Y1) and the separation direction (Y2) are consistent with the front-to-back direction (Y). The contact direction (Y1) is the direction in which the movable contacts 31-34 contact the fixed contacts 21-24 in the front-to-back direction (Y). The separation direction (Y2) is the direction in which the movable contacts 31-34 separate from the fixed contacts 21-24 in the front-to-back direction (Y).

[0035] Figure 4 1 is a three-dimensional diagram of the moving component 17 and its surroundings. Figure 2 as well as Figure 4As shown, the movable member 17 includes a connecting portion 25, a first supporting portion 41, a second supporting portion 42, a first connecting portion 43, and a second connecting portion 44. The connecting portion 25 extends in the front-back direction (Y). The first supporting portion 41 extends downward from the connecting portion 25. The first supporting portion 41 supports the first movable contact piece 15. The first supporting portion 41 includes a first supporting hole 411. The first movable contact piece 15 is arranged in the first supporting hole 411.

[0036] The second support portion 42 extends upward from the connection portion 25. The second support portion 42 supports the second movable contact piece 16. The second support portion 42 includes a second support hole 421. The second movable contact piece 16 is arranged in the second support hole 421. The moving member 17 includes a partition wall 45. The partition wall 45 divides the first support hole 411 and the second support hole 421. The partition wall 45 is arranged between the first movable contact piece 15 and the second movable contact piece 16.

[0037] The moving part 17 includes a first part 17a and a second part 17b. The first part 17a and the second part 17b are separated from each other. The first part 17a and the second part 17b are connected to each other by snap-fitting. The first part 17a includes a connecting portion 25, a part of the first supporting portion 41, a part of the second supporting portion 42, a first connecting portion 43 and a second connecting portion 44. The second part 17b includes a part of the first supporting portion 41 and a part of the second supporting portion 42. The first supporting hole 411 and the second supporting hole 421 are provided between the first part 17a and the second part 17b.

[0038] like Figure 3 As shown, the upper end of the moving member 17 is arranged close to the housing 12. The lower end of the moving member 17 is arranged on the base 11. The moving member 17 is supported by the base 11 in the up-down direction (Z).

[0039] The contact device 2 includes a first contact spring 51 and a second contact spring 52. The first contact spring 51 is disposed between the first movable contact piece 15 and the first support portion 41. The first contact spring 51 is disposed in the first support hole 411. 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.

[0040] The second contact spring 52 is disposed between the second movable contact piece 16 and the second support portion 42. The second contact spring 52 is disposed in the second support hole 421. 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.

[0041] The driving device 4 moves the first movable contact piece 15 and the second movable contact piece 16 by electromagnetic force. The driving device 4 moves the first movable contact piece 15 and the second movable contact piece 16 in the contact direction (Y1) and the separation direction (Y2). Figure 3 as well as Figure 5 As shown in the enlarged view of FIG. 6 , the drive device 4 includes a coil 61, a bobbin 62, a movable iron core 63, a fixed iron core 64, a guide member 65, and a yoke 66. The drive device 4 moves the first movable contact piece 15 and the second movable contact piece 16 by moving the movable iron core 63 based on the magnetic force generated from the coil 61.

[0042] The coil 61 is wound around the bobbin 62. The axis of the coil 61 extends in the front-to-back direction (Y). The bobbin 62 includes a hole 621 extending in the axial direction of the coil 61. The inner surface of the bobbin 62 extends linearly over the entire length of the front-to-back direction (Y). That is, no step difference is formed on the inner circumferential surface of the hole 621 of the bobbin 62.

[0043] 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 provided to be movable in the contact direction (Y1) and the separation direction (Y2). The movable iron core 63 is lubricated. For example, a fluorine-based lubricant is applied to the surface of the movable iron core 63.

[0044] The movable iron core 63 moves integrally with the movable member 17 in the front-to-rear direction (Y). The movable iron core 63 moves in the contact direction (Y1) or the separation direction (Y2) based on the magnetic force generated by the coil 61. As the movable iron core 63 moves, the movable member 17 moves to the closed position or the open position. Moreover, as the movable member 17 moves, the first movable contact piece 15 and the second movable contact piece 16 move in the contact direction (Y1) or the separation direction (Y2). Figure 5 In FIG. 1 , the position of the movable iron core 63 when the moving member 17 is in the closed position is indicated by a two-dot chain line.

[0045] The movable iron core 63 includes an iron core body 63a, a protrusion 63b and a connecting portion 63c. The iron core body 63a is formed in a cylindrical shape and extends in the front-to-back direction (Y). The outer surface of the iron core body 63a extends linearly over the entire length of the front-to-back direction (Y). The protrusion 63b protrudes from the end surface of the iron core body 63a on the contact direction (Y1) side toward the contact direction (Y1). The protrusion 63b is formed in a shape whose outer diameter gradually decreases toward the contact direction (Y1).

[0046] The connecting portion 63c is connected to the moving member 17. In detail, Figure 3As shown, the connection portion 25 of the moving member 17 includes a locking groove 59. The connecting portion 63c of the movable iron core 63 is arranged in the locking groove 59. Thus, the connecting portion 63c is locked in the locking groove 59, and the movable iron core 63 and the moving member 17 are connected.

[0047] The fixed core 64 is disposed opposite to the movable core 63 inside the bobbin 62. The fixed core 64 is disposed in the hole 621 of the bobbin 62. The fixed core 64 is disposed on the contact direction (Y1) side of the movable core 63. The outer diameter of the fixed core 64 is larger than the outer diameter of the movable core 63.

[0048] The guide member 65 is cylindrical and extends in the front-rear direction. The guide member 65 is arranged inside the bobbin 62 and accommodates at least a portion of the movable iron core 63. The guide member 65 is arranged in the hole 621 of the bobbin 62. The guide member 65 is not arranged between the bobbin 62 and the fixed iron core 64. The guide member 65 is lubricated. For example, a fluorine-based lubricant is applied to the surface of the guide member 65. The guide member 65 is formed of a non-magnetic material such as SUS304, brass or copper.

[0049] The guide member 65 includes a guide portion 651, a retreat portion 652, and a connection portion 653. The guide portion 651 guides the movement of the movable iron core 63. The guide portion 651 slides and supports the iron core body 63a. The inner diameter of the guide portion 651 is formed to be slightly larger than the outer diameter of the movable iron core 63, and accommodates at least a part of the movable iron core 63. A space is provided between the outer peripheral surface of the guide member 65 and the inner peripheral surface of the bobbin 62.

[0050] The retreat portion 652 is arranged adjacent to the guide portion 651 on the contact direction (Y1) side of the guide portion 651. The inner diameter of the retreat portion 652 is larger than the inner diameter of the guide portion 651. The outer diameter of the retreat portion 652 is larger than the outer diameter of the guide portion 651 and the outer diameter of the core body 63a. The outer diameter of the retreat portion 652 is smaller than the outer diameter of the fixed core 64. The end face of the retreat portion 652 contacts the end face of the fixed core 64 on the separation direction (Z2) side. A space is provided between the outer peripheral surface of the retreat portion 652 and the inner peripheral surface of the bobbin 62.

[0051] When the movable iron core 63 moves, the escape portion 652 suppresses interference between the outer end portion 63d on the contact direction (Y1) side of the movable iron core 63 and the guide portion 651. The outer end portion 63d in this embodiment is the outer edge portion of the end portion on the contact direction (Y1) side of the iron core body 63a. Figure 5 As shown, the outer end portion 63d is received in the escape portion 652 when the movable iron core 63 moves. The outer end portion 63d is located in the escape portion 652 when the movable member 17 is in the closed position.

[0052] The connecting portion 653 connects the guide portion 651 and the retreat portion 652. The connecting portion 653 extends outward from the end portion on the contact direction (Y1) side of the guide portion 651. The connecting portion 653 extends in the vertical direction. When the moving member 17 is in the disconnected position, the outer end portion 63d overlaps the connecting portion 653 in the vertical direction.

[0053] The yoke 66 is disposed so as to surround the coil 61. The yoke 66 is disposed on the magnetic path formed by the coil 61. A part of the yoke 66 extends along the guide portion 651 to the connection portion 653. Specifically, the yoke 66 includes a first yoke 67 and a second yoke 68.

[0054] The first yoke 67 includes a barrel portion 67a and a flange portion 67b. The barrel portion 67a is arranged between the bobbin 62 and the guide portion 651. The barrel portion 67a extends in the front-to-back direction (Y). The barrel portion 67a extends along the outer peripheral surface of the guide portion 651 to the connecting portion 653, and the barrel portion 67a prevents the guide component 65 from falling off. The flange portion 67b has a rectangular shape and extends in the up-down direction (Z) and the left-right direction (X). The flange portion 67b extends outward from the end of the barrel portion 67a on the separation direction (Y2) side. The flange portion 67b is opposite to the movable component 17 in the front-to-back direction (Y). A portion of the second yoke 68 is arranged on the left and right sides of the coil 61. The second yoke 68 is connected to the fixed core 64.

[0055] like Figure 2 As shown, 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 driving device 4. The first return spring 53 is connected to the first connecting portion 43 of the moving part 17. The second return spring 54 is connected to the second connecting portion 44. The first return spring 53 and the second return spring 54 apply force to the movable iron core 63 in the separation direction.

[0056] Next, the operation of the relay 1 is described. When the coil 61 is not energized, the drive device 4 is not excited. In this case, the moving member 17 and the movable iron core 63 are pressed in the separation direction by the elastic force of the return springs 53 and 54, and the moving member 17 is located at Figure 2 In this state, the first movable contact piece 15 and the second movable contact piece 16 are also pressed in the separation direction 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.

[0057] If the coil 61 is energized, the drive device 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 contact 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 in the contact direction (Y1) together. Therefore, 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 in parallel with respect to the first fixed terminal 13 and the second fixed terminal 14.

[0058] When the current to the coil 61 stops and the coil 61 is demagnetized, the movable iron core 63 is pressed in the separation direction 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 together in the separation direction (Y2). Figure 2 As 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.

[0059] In the relay 1 of the present embodiment described above, since the inner diameter of the retreat portion 652 is larger than the inner diameter of the guide portion 651, when the movable iron core 63 moves, the outer end portion 63d of the movable iron core 63 on the contact direction (Z1) side is moved to the retreat portion 652, thereby suppressing the interference between the outer end portion 63d of the movable iron core 63 and the guide portion 651. Thus, it is possible to suppress the interference between the movable iron core 63 and the guide member 65 and the cutting of the movable iron core 63 or the guide member 65.

[0060] In addition, a part of the yoke 66 extends along the guide portion 651 to the connecting portion 653, so that the magnetic attraction force can be increased, and the guide member 65 can be prevented from falling off by the yoke 66. In addition, the guide member 65 is not arranged between the bobbin 62 and the fixed iron core 64, and the outer diameter of the fixed iron core 64 is larger than the outer diameter of the movable iron core 63. Thus, the fixed iron core 64 can be arranged at a position close to the coil 61, so that the magnetic attraction force can be increased.

[0061] 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.

[0062] In the above-mentioned embodiment, the driving device 4 pushes the movable member 17 from the driving device 4 side to the contact device 2 side, so that the first movable contact piece 15 and the second movable contact piece 16 move in the separation direction. In addition, the driving device 4 pulls the movable member 17 from the contact device 2 side to the driving device 4 side, so that the first movable contact piece 15 and the second movable contact piece 16 move in the contact direction. However, the movement direction of the movable member 17 for opening and closing the contact may be opposite to that in the above-mentioned embodiment. That is, the driving device 4 may push the movable member 17 from the driving device 4 side to the contact device 2 side, so that the first movable contact piece 15 and the second movable contact piece 16 move in the contact direction. It is also possible that the driving device 4 pulls the movable member 17 from the contact device 2 side to the driving device 4 side, so that the first movable contact piece 15 and the second movable contact piece 16 move in the separation direction. That is, the contact direction and the separation direction may also be opposite to those in the above-mentioned embodiment.

[0063] 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 external terminal portion 132 and the second external terminal portion 142 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.

[0064] The shapes or configurations of the first to fourth fixed contacts 21 to 24 may also be changed. 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 be a part of the first fixed terminal 13 and be in the same plane as the 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 as the other parts of the second fixed terminal 14.

[0065] The shape or configuration of the first movable contact 31 to the fourth movable contact 34 may also be changed. 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 the 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 the other parts of the second movable contact piece 16.

[0066] The shape or configuration of the coil 61, the bobbin 62, the movable iron core 63, the fixed iron core 64, the guide member 65 or the yoke 66 may also be changed. A step difference may also be provided on the inner surface of the bobbin 62. The guide member 65 may also be arranged between the bobbin 62 and the fixed iron core 64. Lubrication may also be performed on one of the guide member 65 and the fixed iron core 64, or lubrication may not be performed. The outer end 63d of the movable iron core 63 may be accommodated in either the guide portion 651 or the retreat portion 652 when the movable member 17 is in the disconnected position. When the movable member 17 is in the disconnected position, the outer end 63d may also be arranged closer to the separation direction (Y2) side or the contact direction (Y1) side than the connecting portion 653. As long as the outer end 63d is accommodated in the retreat portion 652 when the movable member 17 is in the closed position.

[0067] The moving member 17 may not be supported by the housing 3. The moving member 17 may be made of a conductive material. The moving member 17 may be made of metal. The moving member 17 may be a shaft member connecting the movable contact pieces 15 and 16 and the movable iron core 63. In this case, the movable contact pieces 15 and 16 may be supported by a bracket.

Claims

1. A relay, characterized in that: have: a first fixed terminal and a second fixed terminal; a first fixed contact connected to the first fixed terminal; a second fixed contact connected to the second fixed terminal; a first movable contact piece; a first movable contact connected to the first movable contact piece and opposite to the first fixed contact; a second movable contact connected to the first movable contact piece and opposite to the second fixed contact; a moving component connected to the first movable contact piece in a manner capable of moving along a contact direction in which the first movable contact contacts the first fixed contact and a separation direction in which the first movable contact contacts the first fixed contact; and a driving device, the driving device comprising a bobbin, a coil wound on the bobbin, a movable iron core connected to the movable member, a fixed iron core arranged inside the bobbin opposite to the movable iron core, and a guide member arranged inside the bobbin and accommodating at least a portion of the movable iron core, the driving device moving the movable iron core based on a magnetic force generated by the coil, thereby moving the first movable contact piece; The guide component includes a guide portion and a retreat portion, the guide portion guides the movement of the movable iron core, the inner diameter of the retreat portion is larger than the inner diameter of the guide portion, and when the movable iron core moves, the retreat portion suppresses the interference between the outer edge portion of the end of the contact direction side of the main body of the movable iron core and the guide portion.

2. The relay according to claim 1, characterized in that: When the first movable contact is in contact with the first fixed contact, the outer edge portion of the movable iron core is located within the escape portion.

3. The relay according to claim 1 or 2, characterized in that: The outer diameter of the fixed iron core is greater than the outer diameter of the movable iron core.

4. The relay according to claim 1 or 2, characterized in that: The relay further includes a yoke disposed around the bobbin, The outer diameter of the retreat portion is larger than the outer diameter of the guide portion, The guide component further includes a connecting portion connecting the guide portion and the retreat portion. A portion of the yoke extends along the guide portion to the connection portion.

5. The relay according to claim 1 or 2, characterized in that: The outer diameter of the retreat portion is smaller than the outer diameter of the fixed core.

6. The relay according to claim 1 or 2, characterized in that: The guide member is not arranged between the bobbin and the fixed core.

7. The relay according to claim 1 or 2, characterized in that: A space is provided between the guide member and the bobbin.

8. The relay according to claim 1 or 2, characterized in that: The inner surface of the bobbin extends linearly over the entire length in the moving direction of the movable iron core.

9. The relay according to claim 1 or 2, characterized in that: At least one of the guide member and the movable iron core is lubricated.

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