Relay

Abstract

The present invention relates to a relay. An insulating member is connected to a first movable contact piece. A movable iron core is connected to the insulating member. A supporting member slides and supports the insulating member. The first movable contact piece and the movable iron core are electrically insulated by the insulating member. The insulating member includes a first end facing the supporting member and a first protrusion protruding from the first end toward the supporting member and partially extending along the moving direction of the insulating member at the first end. The supporting member slides and supports the insulating member at the first protrusion.

Description

Technical Field

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

[0002] The plunger relay has a pair of fixed contacts, a movable contact piece, and a drive device. For example, in the relay of Japanese Patent Publication No. 2017-204480, 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 respectively 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 due to the magnetic force generated by the coil, thereby moving the movable contact piece.

[0004] In the above relay, the movable contact piece and the movable iron core are connected by a driving shaft made of a conductive material. Therefore, it is difficult to ensure an insulation distance between the movable contact piece and the movable iron core. In addition, if an insulating member is arranged between the movable contact piece and the driving shaft in order to ensure the insulation distance, the relay will be enlarged.

[0005] In order to ensure an appropriate insulation distance while suppressing the enlargement of the relay, it is considered to connect the movable contact piece with the movable iron core using an insulating member so that the insulating member moves together with the movable iron core. In this case, in order to make the insulating member move stably, it is preferred to use other components to slide and support the insulating member, but there is a problem of wear debris generated by the sliding of the insulating member. Summary of the invention

[0006] An object of the present invention is to suppress the generation of wear debris due to sliding of an insulating member in a relay in which an insulating member for electrically insulating a movable contact piece from a movable iron core is slidably supported.

[0007] 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 first movable contact, a second movable contact, an insulating member, a supporting member, 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 insulating member is connected to the first movable contact piece in a manner that can move in a direction in which the first movable contact contacts the first fixed contact and in a direction in which the first movable contact contacts the first fixed contact. The supporting member slidingly supports the insulating member. The driving device includes a winding frame, a coil wound on the winding frame, and a movable iron core at least partially disposed in the winding frame and connected to the insulating member. The driving device moves the insulating member together with the movable iron core according to the magnetic force generated from the coil, thereby moving the first movable contact piece. The first movable contact piece and the movable iron core are electrically insulated by the insulating member. The insulating member includes a first end facing the support member and a first protrusion protruding from the first end toward the support member and partially extending along the moving direction of the insulating member at the first end. The support member slidably supports the insulating member at the first protrusion.

[0008] In the relay involved in this embodiment, the first protrusion of the insulating member slidably supported by the supporting member partially extends along the moving direction of the insulating member at the first end portion facing the supporting member. As a result, the contact area between the first protrusion and the supporting member becomes smaller than when the first protrusion extends along the moving direction of the insulating member over the entire length of the first end portion. As a result, the generation of wear debris from the insulating member and / or the supporting member caused by the sliding of the insulating member can be suppressed. In addition, compared with the case where the first protrusion extends along the moving direction of the insulating member over the entire length of the first end portion, when the insulating member is tilted, the interference between the first protrusion and the supporting member can be suppressed. As a result, the first protrusion can be suppressed from interfering with the supporting member and hindering the movement of the insulating member.

[0009] The length of the first protrusion in the moving direction may be shorter than the length of the first end in the moving direction. In this case, the same effects as those described above can be obtained.

[0010] The insulating member may also include a locking groove for locking the movable iron core. The movable iron core may also include a connecting portion arranged in the locking groove. One of the locking groove and the connecting portion may also include a locking protrusion protruding in the moving direction of the insulating member in the locking groove. The movable iron core may also be lightly pressed into the locking groove by the locking protrusion. In this case, the shaking of the movable iron core is suppressed and the movement of the movable iron core is stable.

[0011] The supporting member may be a housing. In this case, the number of components can be reduced and the insulating member can be stably moved.

[0012] The support member may include a base for supporting the driving device. The first protrusion may be slidably supported on the base. In this case, the insulating member can be stably moved by the base.

[0013] The support member may include a first recessed portion that supports the first protrusion in a sliding manner. In this case, since the wear debris is held in the first recessed portion, it is possible to suppress the wear powder from spreading in the support member.

[0014] The insulating member may further include a second end portion and a second protrusion, wherein the second end portion faces the support member on a side opposite to the first end portion, the second protrusion protrudes from the second end portion toward the support member, and the second end portion can partially extend in the moving direction of the insulating member and can contact the support member. In this case, the positional deviation of the insulating member can be suppressed by the second protrusion.

[0015] The support member may include a second recessed portion that contacts the second protrusion. In this case, since the wear debris is held in the second recessed portion, it is possible to suppress the wear powder from spreading in the support member.

[0016] The support member may also slide and support the insulating member at the second protrusion. In this case, the insulating member can be moved more stably by the support member.

[0017] A relay according to another embodiment includes a first fixed terminal, a first fixed contact, a second fixed terminal, a second fixed contact, a first movable contact piece, a first movable contact, a second movable contact, an insulating member, a supporting member, 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 insulating member is connected to the first movable contact piece in a manner that allows the first movable contact to move in a direction in which the first movable contact contacts the first fixed contact and in a direction in which the first movable contact separates from the first fixed contact. The supporting member slidingly supports the insulating member. The driving device includes a bobbin, a coil wound on the bobbin, and a movable iron core at least partially disposed in the bobbin and connected to the insulating member. The driving device moves the insulating member together with the movable iron core according to the magnetic force generated from the coil, thereby moving the first movable contact piece. The first movable contact piece and the movable iron core are electrically insulated by the insulating member. The insulating member includes a first end facing the supporting member. The support member includes a protrusion that protrudes toward the first end portion and extends in a moving direction of the insulating member and partially contacts the first end portion in the moving direction of the insulating member, and the insulating member is slidably supported at the protrusion.

[0018] In another type of relay, the insulating member is slidably supported at the protrusion that partially contacts the first end of the insulating member. As a result, the contact area between the protrusion and the insulating member becomes smaller than when the protrusion contacts the first end of the insulating member over the entire length of the moving direction of the insulating member. As a result, the generation of wear debris from the insulating member and / or the supporting component caused by the sliding of the insulating member can be suppressed. In addition, compared with the case where the protrusion contacts the entire length of the moving direction of the insulating member, when the insulating member is tilted, the interference between the insulating member and the protrusion can be suppressed. As a result, the interference between the protrusion and the insulating member and the obstruction of the movement of the insulating member can be suppressed.

[0019] The insulating member may also include a locking groove for locking the movable iron core. The movable iron core may also include a connecting portion arranged in the locking groove. One of the locking groove and the connecting portion may also include a locking protrusion protruding in the moving direction of the insulating member in the locking groove. The movable iron core may also be lightly pressed into the locking groove by the locking protrusion. In this case, the shaking of the movable iron core is suppressed and the movement of the movable iron core is stable.

[0020] The relay may also include a third fixed contact, a fourth fixed contact, a second movable contact piece, a third movable contact and a fourth movable contact. The third fixed contact may also be connected to the first fixed terminal. The fourth fixed contact may also be connected to the second fixed terminal. The second movable contact piece may also be separated from the first movable contact piece. The third movable contact may also be connected to the second movable contact piece and be opposite to the third fixed contact. The fourth movable contact may also be connected to the second movable contact piece and be opposite to the fourth fixed contact. The insulating member may also be connected to the first movable contact piece and the second movable contact piece. The second movable contact piece and the movable iron core may also be electrically insulated by the insulating member.

[0021] In this case, 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. As a result, the contact resistance and temperature rise of the relay can be reduced. In addition, the first movable contact piece and the second movable contact piece are independent of each other. Therefore, compared with the case where the first movable contact to the fourth movable contact are provided on an integrated movable contact piece, the first movable contact to the fourth movable contact can be stably contacted with the first fixed contact to the fourth fixed contact, respectively. In addition, an appropriate insulation distance can be ensured between the first movable contact piece and the movable iron core, and between the second movable contact piece and the movable iron core. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a perspective view of a relay according to the embodiment.

[0023] Figure 2 is a top view of the relay with the insulating member in the disconnected position.

[0024] Figure 3 It is a longitudinal cross-sectional view of the relay.

[0025] Figure 4 yes Figure 3 A cross-sectional view of the relay taken along line IV-IV.

[0026] Figure 5 It is a three-dimensional diagram of an insulating member and its surroundings.

[0027] Figure 6 This is a diagram showing the insulating member and its surroundings as viewed from below.

[0028] Figure 7 This is a diagram showing the insulating member and its surroundings as viewed from above.

[0029] Figure 8 is a top view of the relay when the insulating member is in the closed position.

[0030] Fig. 9 It is a diagram showing a modified example of the second protrusion.

[0031] Fig.10 It is a figure which shows the modification of the locking protrusion.

[0032] Fig.11 It is a diagram showing a modified example of the first protrusion, the first recess, the second protrusion, and the second recess. DETAILED DESCRIPTION

[0033] 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. Figure 4 So Figure 3 A cross-sectional view of the relay 1 with the IV-IV line cut off.

[0034] The relay 1 includes a contact device 2, a housing 3 (an example of a supporting member), 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 a case 12. The base 11 and the case 12 are made of, for example, resin. Figure 1 as well as Figure 2 In the embodiment, the housing 12 is omitted.

[0035] 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 configuration direction of the relay 1.

[0036] 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.

[0037] 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.

[0038] 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 up-down direction (Z).

[0039] 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. The second fixed contact 22 and the fourth fixed contact 24 are arranged separately 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.

[0040] 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).

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The contact device 2 includes an insulating member 17. The insulating member 17 is made of an insulating material such as resin. The insulating 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 insulating member 17 between the first movable contact 31 and the second movable contact 32. The first movable contact piece 15 is connected to the insulating member 17 via the first contact spring 51 described later. The second movable contact piece 16 is connected to the insulating member 17 between the third movable contact 33 and the fourth movable contact 34. The second movable contact piece 16 is connected to the insulating member 17 via the 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 insulating member 17.

[0045] The insulating member 17 is provided 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 movement directions of the insulating member 17. The contact direction (Y1) and the separation direction (Y2) coincide with the front-to-back direction (Y). The contact direction (Y1) is a 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 a direction in which the movable contacts 31-34 separate from the fixed contacts 21-24 in the front-to-back direction (Y).

[0046] Figure 5 It is a perspective view of the insulating member 17 and its surroundings. Figure 6 This is a diagram showing the insulating member 17 and its surroundings as viewed from below. Figure 7 1 is a diagram showing the insulating member 17 and the surroundings of the insulating member 17 as viewed from above. The insulating 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-to-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.

[0047] 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 insulating 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.

[0048] The insulating member 17 includes a first member 17a and a second member 17b. The first member 17a and the second member 17b are separated from each other. The first member 17a and the second member 17b are connected to each other by snap fit. The first member 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 member 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 member 17a and the second member 17b.

[0049] like Figure 4 as well as Figure 7 As shown, the upper end of the insulating member 17 is disposed close to the housing 12. The lower end of the insulating member 17 is disposed on the base 11. The insulating member 17 is supported by the base 11 so as to slide in the up-down direction (Z).

[0050] like Figures 4 to 7 As shown, the insulating member 17 includes a first end 46, a second end 47, first protrusions 48a, 48b, and second protrusions 49a, 49b. The first end 46 is one end of the insulating member 17 in the up-down direction (Z), and is the lower end of the insulating member 17 in this case. The first end 46 faces the base 11 of the housing 3. The second end 47 is the other end of the insulating member 17 in the up-down direction (Z), and is the upper end of the insulating member 17 in this case. The second end 47 faces the top surface of the box body 12.

[0051] The first protrusion 48a and the first protrusion 48b are arranged to be separated from each other in the left-right direction (X). The first protrusions 48a and 48b protrude from the first end 46 toward the base 11. The first protrusions 48a and 48b extend in the front-to-back direction (Y). The first protrusions 48a and 48b extend partially at the first end 46 along the front-to-back direction (Y). The length of the first protrusions 48a and 48b in the front-to-back direction (Y) is shorter than the length of the first end 46 in the front-to-back direction (Y). That is, the first protrusions 48a and 48b do not extend over the entire length of the first end 46 in the front-to-back direction (Y). The first protrusions 48a and 48b extend from the end of the first end 46 on the separation direction (Y2) side to near the middle of the first end 46 in the front-to-back direction (Y).

[0052] The base 11 supports the insulating member 17 for sliding movement via the first protrusions 48a and 48b. Figure 4 As shown, the base 11 includes first recessed portions 55a, 55b. The first recessed portions 55a, 55b have a smoothly curved shape.

[0053] The first recessed portion 55a is disposed below the first protrusion 48a. The first recessed portion 55a is in contact with the first protrusion 48a.

[0054] The first recessed portion 55a slidably supports the first protrusion 48a.

[0055] The first recessed portion 55b is disposed below the first protrusion 48b. The first recessed portion 55b is in contact with the first protrusion 48b. The first recessed portion 55b supports the first protrusion 48b in a sliding manner.

[0056] The base 11 includes a first guide wall 56 and a second guide wall 57. The first guide wall 56 and the second guide wall 57 protrude upward from the base 11. The first guide wall 56 and the second guide wall 57 extend in the front-rear direction (Y). The first end 46 of the insulating member 17 is arranged between the first guide wall 56 and the second guide wall 57.

[0057] The second protrusion 49a and the second protrusion 49b are arranged to be separated from each other in the left-right direction (X). The second protrusions 49a, 49b protrude from the second end portion 47 toward the top surface of the box body 12. The second protrusions 49a, 49b extend in the front-to-back direction (Y). The second protrusions 49a, 49b extend partially at the second end portion 47 along the front-to-back direction (Y). That is, the second protrusions 49a, 49b do not extend over the entire length of the second end portion 47 in the front-to-back direction (Y). The second protrusions 49a, 49b extend from the front end of the second end portion 47 to near the middle of the second end portion 47 in the front-to-back direction (Y).

[0058] The second protrusions 49a and 49b can contact the housing 12. Specifically, the housing 12 includes second recesses 58a and 58b. The second recesses 58a and 58b have smoothly curved shapes. The second recess 58a is disposed above the second protrusion 49a. The second recess 58a can contact the second protrusion 49a. The second recess 58b is disposed above the second protrusion 49b. The second recess 58b can contact the second protrusion 49b. Figure 4 As shown in FIG. 1 , when the insulating member 17 is slidably supported on the base 11 in the vertical direction (Z), there is a gap between the second protrusions 49a, 49b and the second recesses 58a, 58b. Figure 4 When the position shown deviates upward, the second protrusions 49a and 49b come into contact with the second recesses 58a and 58b, and the insulating member 17 is slidably supported by the case 12 at the second protrusions 49a and 49b.

[0059] The box body 12 includes a third guide wall 60a and a fourth guide wall 60b. The third guide wall 60a and the fourth guide wall 60b protrude downward from the top surface of the box body 12. The third guide wall 60a and the fourth guide wall 60b extend in the front-to-back direction (Y). The second end 47 of the insulating member 17 is arranged between the third guide wall 60a and the fourth guide wall 60b.

[0060] 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.

[0061] 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.

[0062] 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 shown, the driving device 4 includes a coil 61 , a bobbin 62 , a movable iron core 63 , a fixed iron core 64 and a yoke 65 .

[0063] 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 disposed in the hole 621 of the bobbin 62. The movable iron core 63 is configured to be movable in the contact direction (Y1) and the separation direction (Y2).

[0064] The movable iron core 63 is connected to the insulating member 17. The first movable contact piece 15 and the movable iron core 63 are electrically insulated by the insulating member 17. The second movable contact piece 16 and the movable iron core 63 are electrically insulated by the insulating member 17.

[0065] like Figure 2 and Figure 6As shown, the connecting portion 25 of the insulating member 17 includes a locking groove 59. The locking groove 59 locks the movable iron core 63. The locking groove 59 includes a locking protrusion 59a that protrudes in the moving direction of the insulating member 17 in the locking groove 59. The locking protrusion 59a extends in the front-to-back direction (Y). The locking protrusion 59a protrudes toward the movable iron core 63 in the locking groove 59. The movable iron core 63 includes a connecting portion 66. The connecting portion 66 is arranged in the locking groove 59 in a state where the front end surface of the connecting portion 66 is in contact with the locking protrusion 59a. The connecting portion 66 is lightly pressed into the locking groove 59 by the locking protrusion 59a. As a result, the movable iron core 63 is fixed relative to the insulating member 17 in a manner that it cannot move relative to the front-to-back direction (Y).

[0066] The movable iron core 63 moves in the contact direction (Y1) or the separation direction (Y2) according to the magnetic force generated by the coil 61. With the movement of the movable iron core 63, the insulating member 17 moves to the closed position or the open position. In addition, with the movement of the insulating member 17, the first movable contact piece 15 and the second movable contact piece 16 move in the contact direction (Y1) or the separation direction (Y2).

[0067] The fixed iron core 64 is disposed in the hole 621 of the bobbin 62. The fixed iron core 64 is disposed opposite to the movable iron core 63 in the front-rear direction (Y). The coil 61 generates an electromagnetic force that moves the movable iron core 63 in the contact direction (Y1) by energizing.

[0068] The yoke 65 is arranged so as to surround the coil 61. The yoke 65 is arranged on the magnetic path formed by the coil 61. Figures 1 to 3 As shown, the yoke 65 includes a first yoke 67 and a second yoke 68. The first yoke 67 extends in the front-to-back direction (Y) and the left-to-right direction (X). The first yoke 67 is opposite to the insulating member 17 in the front-to-back direction (Y). A portion of the second yoke 68 is arranged on the left and right of the coil 61. The second yoke 68 is connected to the fixed iron core 64.

[0069] 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 insulating member 17 and the driving device 4. The first return spring 53 is connected to the first connecting portion 43 of the insulating member 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.

[0070] Next, the operation of the relay 1 will be described. When the coil 61 is not energized, the drive device 4 is not excited. In this case, the insulating 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 insulating member 17 is located Figure 2In this state, the first movable contact piece 15 and the second movable contact piece 16 are also pressed in the separation direction via the insulating member 17. Therefore, when the insulating 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 insulating 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.

[0071] 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 insulating member 17, the first movable contact piece 15, and the second movable contact piece 16 move together in the contact direction (Y1). Figure 8 As shown, the insulating member 17 moves to the closed position. As a result, when the insulating 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 insulating 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 connected in parallel with respect to the first fixed terminal 13 and the second fixed terminal 14.

[0072] When the current in 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 insulating 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 insulating member 17 moves to the disconnected position. As a result, when the insulating 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 insulating 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.

[0073] In the relay 1 of the present embodiment described above, the first protrusions 48a, 48b slidably supported by the insulating member 17 partially extend in the front-rear direction (Y) at the first end 46 of the insulating member 17 facing the housing 3. As a result, the contact area between the first protrusions 48a, 48b and the housing 3 becomes smaller than when the first protrusions 48a, 48b extend over the entire length of the first end 46 in the front-rear direction (Y). As a result, the generation of wear debris generated from the insulating member 17 and / or the housing 3 due to the sliding of the insulating member 17 can be suppressed.

[0074] Furthermore, when the insulating member 17 is tilted, the first protrusions 48a and 48b can be suppressed from interfering with the housing 3, compared with the case where the first protrusions 48a and 48b extend over the entire length of the first end portion 46 in the front-rear direction (Y). Thus, the first protrusions 48a and 48b can be suppressed from interfering with the housing 3 and hindering the movement of the insulating member 17. In addition, the movable iron core 63 is lightly pressed into the locking groove 59, so that the shaking of the movable iron core 63 is suppressed, and the movement of the movable iron core 63 is stable.

[0075] 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.

[0076] In the above-mentioned embodiment, the drive device 4 pushes the insulating 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 insulating 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 insulating member 17 for opening and closing the contact may be opposite to that in the above-mentioned embodiment. That is, the drive device 4 may push the insulating 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 insulating 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 above-mentioned embodiment.

[0077] 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.

[0078] The shape or arrangement of the coil 61, the bobbin 62, the movable iron core 63, the fixed iron core 64, or the yoke 65 may be changed. The shape or arrangement of the first to fourth fixed contacts 21 to 24 may be changed. The shape or arrangement of the first to fourth movable contacts 31 to 34 may be changed.

[0079] The first fixed contact 21 and / or the third fixed contact 23 may also be integrated with the first fixed terminal 13. The first fixed contact 21 and / or the third fixed contact 23 may also be a part of the first fixed terminal 13, and be in the same plane with other parts of the first fixed terminal 13. The second fixed contact 22 and / or the fourth fixed contact 24 may also be integrated with the second fixed terminal 14. The second fixed contact 22 and / or the fourth fixed contact 24 may also be a part of the second fixed terminal 14, and be in the same plane with other parts of the second fixed terminal 14.

[0080] The first movable contact 31 and / or the second movable contact 32 may also be integrated with the first movable contact piece 15. The first movable contact 31 and / or the second movable contact 32 may also be a part of the first movable contact piece 15, and be in the same plane as other parts of the first movable contact piece 15. The third movable contact 33 and / or the fourth movable contact 34 may also be integrated with the second movable contact piece 16. The third movable contact 33 and / or the fourth movable contact 34 may also be a part of the second movable contact piece 16, and be in the same plane as other parts of the second movable contact piece 16.

[0081] The insulating member 17 may not be slidably supported by the housing 3. At least a part of the insulating member 17 may be slidably supported by another member disposed in the housing 3.

[0082] The shape or configuration of the insulating member 17 may also be changed. The shape or configuration of the base 11 may also be changed. The shape or configuration of the housing 12 may also be changed. For example, Fig. 9 As shown, the insulating member 17 may be slidably supported by both the base 11 and the housing 12. Alternatively, the insulating member 17 may be slidably supported only by the housing 12. That is, the same structure as the first protrusions 48a and 48b may be provided at the second end portion 47 of the insulating member 17, and the first protrusions 48a and 48b may be slidably supported by the housing 12.

[0083] The second recesses 58a and 58b may be omitted. The second protrusions 49a and 49b may be omitted. The first recesses 55a and 55b may be omitted. The number of first protrusions 48a and 48b may be changed. The structure of the connecting portion 25 of the insulating member 17 and the connecting portion 66 of the movable iron core 63 may be changed. The shape or arrangement of the locking protrusion 66a may be changed. For example, Fig.10 As shown, the connecting portion 66 of the movable iron core 63 may also include a locking protrusion 66 a. In this case, the locking protrusion 66 a may protrude from the front end surface of the connecting portion 66 in the locking groove 59.

[0084] In addition, if Fig.11As shown in FIG. 1 , the concave-convex relationship between the first protrusions 48a, 48b and the first recesses 55a, 55b may be reversed. Similarly, the concave-convex relationship between the second protrusions 49a, 49b and the second recesses 58a, 58b may be reversed. In this case, the first protrusions 48a, 48b protrude from the base 11 toward the first end 46 of the insulating member 17 and partially contact the first end 46 in the moving direction of the insulating member 17.

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; an insulating member connected to the first movable contact piece in a manner movable in a direction in which the first movable contact and the first fixed contact come into contact and separate from each other; A supporting member for slidably supporting the insulating member; and A driving device, the driving device comprising a winding frame, a coil wound on the winding frame, and a movable iron core, at least a portion of the movable iron core is arranged in the winding frame and the movable iron core is connected to the insulating member, the insulating member and the movable iron core move together according to the magnetic force generated by the coil, thereby moving the first movable contact piece, wherein, The first movable contact piece and the movable iron core are electrically insulated by the insulating member. The insulating member includes a first end portion facing the support member, a first protrusion protruding from the first end portion toward the support member and partially extending in the moving direction of the insulating member at the first end portion, and a locking groove for locking the movable iron core. The support member slides and supports the insulating member at the first protrusion. The movable iron core includes a connecting portion disposed in the locking groove, One of the locking groove and the connecting portion includes a locking protrusion protruding in the locking groove in the moving direction, The movable iron core is lightly pressed into the locking groove by the locking protrusion.

2. 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; an insulating member connected to the first movable contact piece in a manner movable in a direction in which the first movable contact and the first fixed contact come into contact and separate from each other; A supporting member for slidably supporting the insulating member; and A driving device, the driving device comprising a winding frame, a coil wound on the winding frame, and a movable iron core, at least a portion of the movable iron core is arranged in the winding frame and the movable iron core is connected to the insulating member, the insulating member and the movable iron core move together according to the magnetic force generated by the coil, thereby moving the first movable contact piece, wherein, The first movable contact piece and the movable iron core are electrically insulated by the insulating member. The insulating member includes a first end portion facing the support member and a first protrusion, the first protrusion protruding from the first end portion toward the support member and partially extending from the first end portion toward a moving direction of the insulating member, The support member slides and supports the insulating member at the first protrusion. The supporting member includes a base supporting the driving device, The first protrusion is slidably supported by the base.

3. The relay according to claim 1 or 2, characterized in that: A length of the first protrusion in the moving direction is shorter than a length of the first end in the moving direction.

4. The relay according to claim 1 or 2, characterized in that: The supporting component is a housing.

5. The relay according to claim 1 or 2, characterized in that: The support member includes a first recessed portion that slidably supports the first protrusion.

6. The relay according to claim 1 or 2, characterized in that: The insulating member further includes a second end portion and a second protrusion, The second end portion faces the support member on a side opposite to the first end portion, The second protrusion protrudes from the second end portion toward the support member, can partially extend along the moving direction at the second end portion, and can contact the support member.

7. The relay according to claim 6, characterized in that: The support member includes a second recess with which the second protrusion contacts.

8. The relay according to claim 6, characterized in that: The support member slidably supports the insulating member at the second protrusion.

9. 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; an insulating member connected to the first movable contact piece in a manner movable in a direction in which the first movable contact and the first fixed contact come into contact and separate from each other; A supporting member for slidably supporting the insulating member; and A driving device, the driving device comprising a winding frame, a coil wound on the winding frame, and a movable iron core, at least a portion of the movable iron core is arranged in the winding frame and the movable iron core is connected to the insulating member, the movable iron core moves by the magnetic force generated by the coil, thereby moving the first movable contact piece via the insulating member, wherein, The first movable contact piece and the movable iron core are electrically insulated by the insulating member. The insulating member includes a first end portion facing the support component, The support member includes a protrusion, the protrusion protruding toward the first end portion and extending in the moving direction of the insulating member, partially contacting the first end portion in the moving direction of the insulating member, and slidingly supporting the insulating member at the protrusion, The insulating member includes a locking groove for locking the movable iron core. The movable iron core includes a connecting portion disposed in the locking groove, One of the locking groove and the connecting portion includes a locking protrusion protruding in the locking groove in the moving direction of the insulating member. The movable iron core is lightly pressed into the locking groove by the locking protrusion.

10. 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; an insulating member connected to the first movable contact piece in a manner movable in a direction in which the first movable contact and the first fixed contact come into contact and separate from each other; A supporting member for slidably supporting the insulating member; and A driving device, the driving device comprising a winding frame, a coil wound on the winding frame, and a movable iron core, at least a portion of the movable iron core is arranged in the winding frame and the movable iron core is connected to the insulating member, the movable iron core moves by the magnetic force generated by the coil, thereby moving the first movable contact piece via the insulating member, wherein, The first movable contact piece and the movable iron core are electrically insulated by the insulating member. The insulating member includes a first end portion facing the support component, The support component includes a base and a protrusion. The protrusion protrudes from the base toward the first end portion and extends in a moving direction of the insulating member. The protrusion partially contacts the first end portion in the moving direction of the insulating member, and the insulating member is slidably supported by the protrusion.

11. The relay according to any one of claims 1, 2, 9 and 10, characterized in that: Also includes: a third fixed contact connected to the first fixed terminal; a fourth fixed contact connected to the second fixed terminal; a second movable contact piece separate from the first movable contact piece; a third movable contact connected to the second movable contact piece and opposite to the third fixed contact; and A fourth movable contact connected to the second movable contact piece and opposite to the fourth fixed contact, wherein: The insulating member is connected to the first movable contact piece and the second movable contact piece, The second movable contact piece and the movable iron core are electrically insulated from each other by the insulating member.

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