Relay

Abstract

The first and second movable contacts are connected to the first movable contact piece. The second movable contact piece is separate from the first movable contact piece. The third and fourth movable contacts are connected to the second movable contact piece. The movable iron core moves by the magnetic force generated from the coil, whereby the driving device moves the first movable contact piece and the second movable contact piece. In a state where the first movable contact to the fourth movable contact are in contact with the first fixed contact to the fourth fixed contact, respectively, the first movable contact piece and the second movable contact piece are electrically connected in parallel with each other relative to the first fixed terminal and the second fixed terminal.

Description

Technical Field

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

[0002] The relay has a pair of fixed contacts and a movable contact piece. For example, in the relay of Patent Document 1, 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 to face each other with the pair of fixed contacts.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2017-204480

[0004] In a relay, contact resistance is generated between a fixed contact and a movable contact. Therefore, in a structure having two sets of fixed contacts and movable contacts, as in the above-mentioned relay, the contact resistance in the relay becomes high. In particular, in a large-capacity relay that switches a large current, heat generation increases in proportion to the square of the current. Therefore, a low contact resistance is required to suppress heat generation.

[0005] An object of the present invention is to reduce contact resistance and suppress temperature rise in a relay. Summary of the invention

[0006] A relay according to one embodiment includes a first fixed terminal, a first fixed contact, a third fixed contact, a second fixed terminal, a second fixed contact, a fourth fixed contact, a first movable contact piece, a first movable contact, a second movable contact, a second movable contact piece, a third movable contact, a fourth movable contact, a connecting component, and a driving device. The first fixed contact and the third fixed contact are connected to the first fixed terminal. The second fixed contact and the fourth fixed contact are 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 second movable contact piece is separated from the first movable contact piece. The third movable contact is connected to the second movable contact piece and is opposite to the third fixed contact. The fourth movable contact is connected to the second movable contact piece and is opposite to the fourth fixed contact. The connecting component is connected to the first movable contact piece and the second movable contact piece. The driving device includes a coil and a movable iron core. The movable iron core is connected to the connecting member. The movable iron core moves by the magnetic force generated by the coil, thereby the driving device moves the first movable contact piece and the second movable contact piece. When the first movable contact point to the fourth movable contact point are in contact with the first fixed contact point to the fourth fixed contact point, respectively, the first movable contact piece and the second movable contact piece are electrically connected in parallel with each other relative to the first fixed terminal and the second fixed terminal.

[0007] In the relay of this mode, the first movable contact piece and the second movable contact piece are electrically connected in parallel with respect to the first fixed terminal and the second fixed terminal. Therefore, the current is shunted in the first movable contact and the third movable contact. The current is shunted in the second movable contact and the fourth movable contact. Thus, the contact resistance of the relay can be reduced and the temperature rise can be suppressed.

[0008] In addition, the first movable contact piece and the second movable contact piece are separate bodies, so that the first movable contact point to the fourth movable contact point can be stably contacted with the first fixed contact point to the fourth fixed contact point, respectively, compared with the case where the first movable contact point to the fourth movable contact point are provided on an integral movable contact piece.

[0009] The first movable contact piece may be connected to the connecting member between the first movable contact and the second movable contact. The second movable contact piece may be connected to the connecting member between the third movable contact and the fourth movable contact. In this case, the distance between the first fixed terminal and the second fixed terminal can be increased.

[0010] The connecting member may also include a connecting portion, a first supporting portion, and a second supporting portion. The connecting portion may also be connected to the movable iron core. The first supporting portion may also extend from the connecting portion toward the first movable contact piece. The first supporting portion may also support the first movable contact piece. The second supporting portion may also extend from the connecting portion toward the second movable contact piece. The second supporting portion may also support the second movable contact piece. In this case, the first movable contact piece and the second movable contact piece can be stably supported by the connecting member.

[0011] The first movable contact piece and the second movable contact piece may also extend in the first direction. The first direction may also be a direction intersecting the moving direction of the first movable contact piece and the second movable contact piece. The first fixed terminal and the second fixed terminal may also be configured to be separated from each other in the first direction. The first movable contact piece and the second movable contact piece may also be configured to be separated from each other in the second direction. The second direction may also be a direction intersecting the moving direction and the first direction.

[0012] The first fixed contact and the third fixed contact may also be arranged in the first fixed terminal to be separated from each other in the second direction. The second fixed contact and the fourth fixed contact may also be arranged in the second fixed terminal to be separated from each other in the second direction. The first fixed terminal and the second fixed terminal may also extend respectively along the second direction.

[0013] The relay may further include a housing. The housing may support the first fixed terminal and the second fixed terminal in the second direction. The first fixed terminal and the second fixed terminal may protrude from the housing to the outside of the relay in the second direction.

[0014] The connecting member may be supported by the housing in the second direction. In this case, by providing the first movable contact piece and the second movable contact piece as separate bodies, the movement of the connecting member can be stabilized even if a load applied to the connecting member increases.

[0015] The relay may also include a first contact spring and a second contact spring. When the first movable contact is in contact with the first fixed contact and the second movable contact is in contact with the second fixed contact, the first contact spring may also press the first movable contact piece toward the first fixed terminal and the second fixed terminal. When the third movable contact is in contact with the third fixed contact and the fourth movable contact is in contact with the fourth fixed contact, the second contact spring may also press the second movable contact piece toward the first fixed terminal and the second fixed terminal. In this case, the contact pressure at each contact can be increased.

[0016] The drive device may further include a bobbin around which the coil is wound. At least a portion of the movable core may also be disposed within the bobbin. In this case, the drive device can be miniaturized.

[0017] According to the present invention, in a relay, contact resistance can be reduced and a temperature increase can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view of a relay according to the embodiment.

[0019] Figure 2 It is a three-dimensional diagram of a relay.

[0020] Figure 3 This is an exploded perspective view of a relay.

[0021] Figure 4 is a side view of the relay.

[0022] Figure 5 This is the front view of the relay.

[0023] Figure 6 This is an enlarged view of the connecting parts.

[0024] Figure 7 It is a top cross-sectional view of the relay.

[0025] Figure 8 It is a top cross-sectional view of the relay.

[0026] Fig. 9 It is a side view of the relay of the first modification.

[0027] Fig.10 It is a perspective view of a relay according to a second modification.

[0028] Fig.11It is a perspective view of a connecting member according to a second modification.

[0029] Explanation of the reference numerals: 3…housing, 4…driving device, 13…first fixed terminal, 14…second fixed terminal, 15…first movable contact piece, 16…second movable contact piece, 17…connecting component, 21…first fixed contact, 22…second fixed contact, 23…third fixed contact, 24…fourth fixed contact, 25…connecting portion, 31…first movable contact, 32…second movable contact, 33…third movable contact, 34…fourth movable contact, 41…first supporting portion, 42…second supporting portion, 51…first contact spring, 52…second contact spring, 61…coil, 62…winding frame, 63…movable iron core. DETAILED DESCRIPTION

[0030] Hereinafter, a relay 1 according to an embodiment will be described with reference to the drawings. Figure 1 and Figure 2 It is a perspective view of the relay 1 according to the embodiment. Figure 3 It is an exploded perspective view of the relay 1. Figure 4 is a side view of relay 1. Figure 5 This is the front view of relay 1.

[0031] like Figures 1 to 5 As shown in FIG. 1 , the relay 1 includes a contact device 2, a housing 3, and a drive device 4. The contact device 2 and the drive device 4 are arranged in the housing 3. The housing 3 includes a base 11 and Figure 4 The housing 12 shown. In addition, Figure 4 In FIG. 1 , the base 11 and the housing 12 are shown in cross section. Figures 1 to 3 as well as Figure 5 In the embodiment, the housing 12 is omitted.

[0032] 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 upward, and the opposite direction is defined as downward. In addition, a prescribed direction intersecting the up-down direction (Z) is defined as the front-back direction (Y). A prescribed direction intersecting the up-down direction (Z) and the front-back direction (Y) is defined as the left-right direction (X). The left-right direction (X) is an example of a first direction. The up-down direction (Z) is an example of a second direction. However, these directions are defined for ease of explanation and do not limit the configuration direction of the relay 1.

[0033] 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.

[0034] 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. The first contact support portion 131 and the second contact support portion 141 are arranged 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.

[0035] 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. The first fixed contact 21 and the third fixed contact 23 are arranged in the first fixed terminal 13 to be separated from each other in the vertical direction (Z).

[0036] The second fixed contact 22 and the fourth fixed contact 24 are arranged away 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. The second fixed contact 22 and the fourth fixed contact 24 are arranged to be separated from each other in the up-down direction (Z) in the second fixed terminal 14. The first fixed contact 21 to the fourth fixed contact 24 are formed of a conductive material such as silver or copper.

[0037] 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).

[0038] 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. 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.

[0039] 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.

[0040] 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.

[0041] The contact device 2 includes a connecting member 17. The connecting 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 connecting member 17 between the first movable contact 31 and the second movable contact 32. The second movable contact piece 16 is connected to the connecting member 17 between the third movable contact 33 and the fourth movable contact 34. The connecting member 17 is made of an insulating material such as resin.

[0042] In detail, Figure 6 1 is an enlarged view of the connecting member 17. Figure 6 As shown, the connecting 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-rear 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.

[0043] 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 disposed in the second support hole 421.

[0044] like Figure 4 As shown, the upper end of the connection member 17 is arranged close to the housing 12. The lower end of the connection member 17 is arranged on the base 11. The connection member 17 is supported by the base 11 in the up-down direction (Z).

[0045] 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.

[0046] 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.

[0047] Figure 7 as well as Figure 8 1 is a top cross-sectional view of the relay 1. The drive device 4 moves the first movable contact piece 15 and the second movable contact piece 16 by electromagnetic force. The drive device 4 moves the first movable contact piece 15 and the second movable contact piece 16 in the contact direction and the separation direction. The contact direction is the direction in which the movable contacts 31-34 approach the fixed contacts 21-24 in the front-to-back direction (Y). The separation direction is the direction in which the movable contacts 31-34 leave the fixed contacts 21-24 in the front-to-back direction (Y). The drive device 4 includes a coil 61, a winding frame 62, a movable iron core 63, a fixed iron core 64 and a yoke 65.

[0048] The coil 61 is wound on 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. At least a portion of the movable iron core 63 is arranged in the hole 621 of the bobbin 62. The movable iron core 63 is connected to the connecting member 17. The movable iron core 63 is configured to be movable in the contact direction and the separation direction. The fixed iron core 64 is arranged in the hole 621 of the bobbin 62. The fixed iron core 64 is arranged opposite to the movable iron core 63 in the front-to-back direction (Y). The coil 61 generates an electromagnetic force that moves the movable iron core 63 in the contact direction by energizing. The yoke 65 is arranged in a manner surrounding the coil 61. The yoke 65 is arranged on the magnetic circuit formed by the coil 61. The yoke 65 is arranged in front of, behind, on the left and on the right of the coil 61.

[0049] 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 connecting member 17 and the driving device 4. The first return spring 53 is connected to the first connecting portion 43 of the connecting member 17. The second return spring 54 is connected to the second connecting portion 44 of the connecting member 17. The first return spring 53 and the second return spring 54 apply force to the movable iron core 63 in the separation direction.

[0050] 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 connection 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. Therefore, the connection member 17 is located Figure 7 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 connecting member 17. Therefore, when the connecting 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 connecting 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.

[0051] If the coil 61 is energized, the drive device 4 is excited. In this case, the electromagnetic force of the coil 61 causes the movable iron core 63 to overcome the elastic force of the return springs 53 and 54 and move in the contact direction. As a result, the connecting member 17, the first movable contact piece 15, and the second movable contact piece 16 move in the contact direction together. Figure 8As shown, the connecting member 17 moves to the closed position. As a result, when the connecting 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 connecting 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.

[0052] 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 connecting member 17, the first movable contact piece 15 and the second movable contact piece 16 move in the separation direction together. Figure 7 As shown in FIG. 1 , the connecting member 17 moves toward the disconnected position. As a result, when the connecting 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 connecting 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.

[0053] In the relay 1 of the present embodiment described above, the first movable contact piece 15 and the second movable contact piece 16 are electrically connected in parallel with each other relative to the first fixed terminal 13 and the second fixed terminal 14. Therefore, the current is shunted in the first movable contact 31 and the third movable contact 33. The current is shunted in the second movable contact 32 and the fourth movable contact 34. Thus, the contact resistance of the relay 1 can be reduced.

[0054] In addition, the first movable contact piece 15 and the second movable contact piece 16 are separate from each other. Therefore, compared with the case where the first to fourth movable contacts 31 to 34 are provided on an integral movable contact piece, the first to fourth movable contacts 31 to 34 can be brought into stable contact with the first to fourth fixed contacts 21 to 24, respectively.

[0055] As mentioned above, although one embodiment of the present invention has been described, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the invention.

[0056] In the embodiment described above, the drive device 4 pushes the connecting member 17 from the drive device 4 side to the contact device 2 side, thereby moving the first movable contact piece 15 and the second movable contact piece 16 in the separation direction. In addition, the drive device 4 pulls the connecting member 17 from the contact device 2 side to the drive device 4 side, thereby moving the first movable contact piece 15 and the second movable contact piece 16 in the contact direction. However, the movement direction of the connecting member 17 for opening and closing the contact may be opposite to that in the embodiment described above. That is, the drive device 4 may push the connecting member 17 from the drive device 4 side to the contact device 2 side, thereby moving the first movable contact piece 15 and the second movable contact piece 16 in the contact direction. The drive device 4 may also pull the connecting member 17 from the contact device 2 side to the drive device 4 side, thereby moving the first movable contact piece 15 and the second movable contact piece 16 in the separation direction. That is, the contact direction and the separation direction may also be opposite to those in the embodiment described above.

[0057] The shape or configuration 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 also protrude from the base 11 in a direction different from that of the embodiment described above. The shape or configuration of the first to fourth fixed contacts 21 to 24 may also be changed. For example, the first fixed contact 21 and the third fixed contact 23 may also be configured separately in the left-right direction (X). The second fixed contact 22 and the fourth fixed contact 24 may also be configured separately in the left-right direction (X). The same is true for the first to fourth movable contacts 31-34.

[0058] The shape or configuration of the coil 61, the winding frame 62, the movable iron core 63, the fixed iron core 64 or the yoke 65 may also be changed. The shape or configuration of the first fixed contact 21 to the fourth fixed contact 24 may also be changed. The shape or configuration of the first movable contact 31 to the fourth movable contact 34 may also be changed. In the above embodiment, the relay 1 includes the first return spring 53 and the second return spring 54. However, the number of return springs may be one, or more than two.

[0059] 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 is a part of the first fixed terminal 13, and may be flush with other parts of the first fixed terminal 13. The second fixed contact 22 and / or the fourth fixed contact 24 may also be integrated with the second fixed terminal 14. The second fixed contact 22 and / or the fourth fixed contact 24 is a part of the second fixed terminal 14, and may be flush with other parts of the second fixed terminal 14.

[0060] 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 be a part of the first movable contact piece 15 and may be in the same plane as other parts of the first movable contact piece 15. The third movable contact 33 and / or the fourth movable contact 34 may also be integrated with the second movable contact piece 16. The third movable contact 33 and / or the fourth movable contact 34 may be a part of the second movable contact piece 16 and may be flush with other parts of the second movable contact piece 16.

[0061] In the embodiment, the distance between the first movable contact 31 and the first fixed contact 21 is substantially the same as the distance between the third movable contact 33 and the third fixed contact 23. Therefore, the third movable contact 33 contacts the third fixed contact 23 substantially at the same time as the first movable contact 31 contacts the first fixed contact 21. Fig. 9 As shown in the first modified example, the distance D1 between the first movable contact 31 and the first fixed contact 21 and the distance D3 between the third movable contact 33 and the third fixed contact 23 may be different. In this way, the switching contacts and the energizing contacts that generate arcs can be separated. The same is true for the second and fourth movable contacts 32, 34 and the second and fourth fixed contacts 22, 24.

[0062] The connecting member 17 may not be supported by the housing 3. The connecting member 17 may be made of a conductive material. The connecting member 17 may be made of metal. The shape or configuration of the connecting member 17 may also be changed. For example, Fig.10 It is a diagram showing a relay 1 according to a second modification. Fig.11 It is a diagram showing a connecting member 17 according to a second modified example.

[0063] like Fig.10 and Fig.11 As shown, the shapes of the first support portion 41 and the second support portion 42 may be changed. The first support portion 41 may be provided so as to penetrate the first movable contact piece 15. The first support portion 41 may include stoppers 71, 72. The first movable contact piece 15 and the first contact spring 51 may be arranged between the stoppers 71, 72.

[0064] The second support portion 42 may be provided so as to penetrate the second movable contact piece 16. The second support portion 42 may include stoppers 73 and 74. The second movable contact piece 16 and the second contact spring 52 may be disposed between the stoppers 73 and 74.

[0065] Industrial Applicability

[0066] According to the present invention, in a relay, contact resistance can be reduced and a temperature increase can be suppressed.

Claims

1. A relay, characterized in that: have: Pedestal; a housing covering the base; a first fixed terminal extending in the up-down direction and supported by the base; a first fixed contact connected to the first fixed terminal; a third fixed contact connected to the first fixed terminal; a second fixed terminal extending in the up-down direction and supported by the base, and arranged to be separated from the first fixed terminal in the left-right direction; a second fixed contact connected to the second fixed terminal; a fourth fixed contact connected to the second fixed terminal; A first movable contact piece extending in the left-right direction; a first movable contact point connected to the first movable contact piece and opposite to the first fixed contact point; a second movable contact point connected to the first movable contact piece and opposite to the second fixed contact point; a second movable contact piece which is separate from the first movable contact piece, extends in the left-right direction and is arranged to be separated from the first movable contact piece in the up-down direction; a third movable contact point connected to the second movable contact piece and opposite to the third fixed contact point; a fourth movable contact point connected to the second movable contact piece and opposite to the fourth fixed contact point; a connecting member connected to the first movable contact piece and the second movable contact piece and supported by the base in the up-down direction; as well as a driving device including a coil and a movable iron core connected to the connecting member, wherein the movable iron core moves by a magnetic force generated by the coil, thereby moving the first movable contact piece and the second movable contact piece in a front-rear direction, When the first to fourth movable contacts are in contact with the first to fourth fixed contacts, respectively, the first movable contact piece and the second movable contact piece are electrically connected in parallel with respect to the first fixed terminal and the second fixed terminal. The connecting member comprises: A connecting portion connected to the movable iron core; a first supporting portion extending downward from the connecting portion and supporting the first movable contact piece; a second supporting portion extending upward from the connecting portion and supporting the second movable contact piece; The lower end of the connecting member is arranged on the base. An upper end of the connecting member is arranged close to the housing.

2. The relay according to claim 1, characterized in that: The first movable contact piece is connected to the connecting member between the first movable contact point and the second movable contact point. The second movable contact piece is connected to the connection member between the third movable contact point and the fourth movable contact point.

3. The relay according to claim 1 or 2, characterized in that: The first fixed contact and the third fixed contact are arranged in the first fixed terminal so as to be separated from each other in the up-down direction. The second fixed contact and the fourth fixed contact are arranged to be separated from each other in the up-down direction at the second fixed terminal.

4. The relay according to claim 1 or 2, characterized in that: The first fixed terminal and the second fixed terminal protrude from the base toward the outside of the relay in the up-down direction.

5. The relay according to claim 1 or 2, characterized in that: The connecting member is supported by the base in the up-down direction.

6. The relay according to claim 1 or 2, characterized in that: Also available: a first contact spring for pressing the first movable contact piece toward the first fixed terminal and the second fixed terminal when the first movable contact is in contact with the first fixed contact and the second movable contact is in contact with the second fixed contact; and The second contact spring presses the second movable contact piece toward the first fixed terminal and the second fixed terminal in a state where the third movable contact is in contact with the third fixed contact and the fourth movable contact is in contact with the fourth fixed contact.

7. The relay according to claim 1 or 2, characterized in that: The driving device further includes a winding frame on which the coil is wound. At least a portion of the movable iron core is disposed within the bobbin.

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