CN112582210A - Relay with a movable contact - Google Patents

Abstract

The relay of the present invention includes a base, a 1 st fixed terminal, a driving device, a 1 st positioning member, and a 2 nd positioning member. The base comprises a 1 st positioning surface and a 2 nd positioning surface. The 1 st fixed terminal is fixed to the base. The driving device is supported by the base. The 1 st positioning member is fitted into the base, and the 1 st fixing terminal is pressed against the 1 st positioning surface to position the 1 st fixing terminal with respect to the base. The 2 nd positioning member is fitted into the base, and the driving device is pressed against the 2 nd positioning surface to position the driving device relative to the base.

Description

Relay with a movable contact

Technical Field

The present invention relates to a relay.

Background

Conventionally, a relay that opens and closes an electric circuit by using a magnetic force generated by a coil is known. The relay includes a contact device and a driving device. In the relay of japanese patent laid-open No. 2016 and 110844, a contact device and a driving device are arranged above a base.

In a high-capacity relay, the matrix is formed of a thermosetting resin from the viewpoint of heat resistance. In this case, if the fixed terminal of the contact device is press-fitted into the base and fixed, the base is difficult to press-fit into the base because cracks are generated in the base and resin chips are generated. Further, since press-fitting is impossible, the position of the component is not fixed, and variations in assembly dimension occur.

Disclosure of Invention

The invention aims to improve the positioning accuracy of a component arranged on a base.

A relay according to one embodiment includes a base, a 1 st fixed terminal, a driving device, a 1 st positioning member, and a 2 nd positioning member. The base comprises a 1 st positioning surface and a 2 nd positioning surface. The 1 st fixed terminal is fixed to the base. The driving device is supported by the base. The 1 st positioning member is fitted into the base, and the 1 st fixing terminal is pressed against the 1 st positioning surface to position the 1 st fixing terminal with respect to the base. The 2 nd positioning member is fitted into the base, and the driving device is pressed against the 2 nd positioning surface to position the driving device relative to the base.

In the relay of this embodiment, the 1 st fixing terminal and the driving device can be positioned with respect to the base by the 1 st positioning member and the 2 nd positioning member fitted into the base. This can improve the positioning accuracy of the 1 st fixed terminal and the driving device disposed on the base. Further, for example, when the base is formed of a thermosetting resin, the base may be fixed without caulking, and therefore, it is possible to prevent cracks from occurring in the base or deformation of the assembly member due to caulking.

The 1 st and 2 nd positioning members may also be integral. In this case, the number of components and the assembly process can be reduced.

The direction in which the 1 st positioning member presses the 1 st fixed terminal may be opposite to the direction in which the 2 nd positioning member presses the driving device. In this case, the degree of freedom in design can be improved.

The driving device may include a bobbin, a coil wound around the bobbin, and a yoke disposed around the bobbin. The 2 nd positioning member may press the yoke against the 2 nd positioning surface. In this case, the driving device can be positioned by pressing the yoke against the 2 nd positioning surface.

The 1 st positioning member may include one or more protrusions protruding in a direction in which the 1 st fixed terminal is positioned with respect to the base. The 1 st fixed terminal may be pressed against the 1 st positioning surface by one or more protrusions of the 1 st positioning member.

The 2 nd positioning member may include one or more projections projecting in a direction of positioning the driving device with respect to the base. The driving device may be pressed against the 2 nd positioning surface by one or more projections of the 2 nd positioning member.

The relay may further include a 2 nd fixing terminal fixed to the base and a 3 rd positioning member fitted into the base. The base may further include a 3 rd locating surface. The 3 rd positioning member may press the 2 nd fixing terminal against the 3 rd positioning surface to position the 2 nd fixing terminal with respect to the base. In this case, the positioning accuracy can be improved even in the 2 nd fixing terminal.

The 1 st positioning member and the 3 rd positioning member may also be integral. In this case, the number of components and the assembly process can be reduced.

The 3 rd positioning member may include one or more protrusions protruding in a direction in which the 3 rd fixed terminal is positioned with respect to the base. The 2 nd fixed terminal may be pressed against the 3 rd positioning surface by one or more projections of the 3 rd positioning member.

Drawings

Fig. 1 is a perspective view of a relay according to an embodiment.

Fig. 2 is a top view of the relay with the moving parts in the open position.

Fig. 3 is a bottom view of the relay;

fig. 4 is a sectional view taken along line IV-IV of fig. 2.

Fig. 5 is a portion of the cross-sectional view taken along line V-V of fig. 2.

Fig. 6 is a portion of a cross-sectional view taken along line VI-VI of fig. 2.

Fig. 7 is a perspective view of the moving member and the periphery of the moving member.

Fig. 8 is a perspective view of the 1 st to 3 rd positioning members.

Fig. 9 is a bottom view of a relay according to another embodiment.

Fig. 10 is a bottom view of a relay according to another embodiment.

Fig. 11 is a bottom view of a relay according to another embodiment.

Detailed Description

Next, a relay according to an embodiment will be described with reference to the drawings. Fig. 1 is a perspective view of a relay 1 according to an embodiment. Fig. 2 is a plan view of the relay. Fig. 3 is a bottom view of the relay. Fig. 4 is a sectional view taken along line IV-IV of fig. 2.

The relay 1 includes a contact device 2, a housing 3, a drive device 4, a 1 st positioning member 5, a 2 nd positioning member 6, and a 3 rd positioning member 7.

In the following description, the direction in which the contact device 2 and the driving device 4 are arranged with respect to the base 11 is defined as upward, and the opposite direction is defined as downward. A predetermined direction intersecting the vertical direction (Z) is defined as a front-rear direction (Y). A predetermined direction intersecting the vertical direction (Z) and the front-rear direction (Y) is defined as a left-right direction (X). However, these directions are defined for convenience of explanation, and the arrangement direction of the relay 1 is not limited.

The contact arrangement 2 and the drive arrangement 4 are arranged in a 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. In fig. 1 and 2, the case 12 is omitted.

Fig. 5 is a portion of the cross-sectional view taken along line V-V of fig. 2. Fig. 6 is a portion of a cross-sectional view taken along line VI-VI of fig. 2. As shown in fig. 3 to 6, the base 11 includes a 1 st insertion hole 11a, a 2 nd insertion hole 11b, a 3 rd insertion hole 11c, and a press-in hole 11 d. The 1 st to 3 rd insertion holes 11a to 11c are holes penetrating in the vertical direction. The 1 st insertion hole 11a and the 3 rd insertion hole 11c are arranged separately in the left-right direction (X). The 2 nd insertion hole 11b is disposed near the center of the base 11. The press-in hole 11d is formed by being recessed upward from the lower surface of the base 11. The press-in hole 11d extends in the left-right direction (X) and the front-rear direction (Y). The press-in hole 11d is formed so as to be continuous with the 1 st to 3 rd insertion holes 11a to 11 c.

The contact device 2 includes a 1 st fixed terminal 13, a 2 nd fixed terminal 14, a 1 st fixed contact 21, a 2 nd fixed contact 22, a 3 rd fixed contact 23, and a 4 th fixed contact 24. The 1 st fixed terminal 13 and the 2 nd fixed terminal 14 are formed of a material having conductivity such as copper, for example. The 1 st fixed terminal 13 and the 2 nd fixed terminal 14 extend in the vertical direction (Z), respectively. The 1 st fixed terminal 13 and the 2 nd fixed terminal 14 are arranged apart from each other in the left-right direction (X). The 1 st fixed terminal 13 and the 2 nd fixed terminal 14 are supported by the base 11. The 1 st fixed terminal 13 is inserted into the 1 st insertion hole 11 a. The 2 nd fixing terminal 14 is inserted into the 3 rd insertion hole 11 c.

The 1 st fixed terminal 13 includes a 1 st contact supporting portion 131 and a 1 st outer terminal portion 132. The 2 nd fixed terminal 14 includes a 2 nd contact supporting portion 141 and a 2 nd external terminal portion 142 (refer to fig. 4). The 1 st contact supporting portion 131 and the 2 nd contact supporting portion 141 are disposed in the housing 3. The 1 st and 2 nd external terminal portions 132 and 142 protrude to the outside of the housing 3. The 1 st outer terminal portion 132 and the 2 nd outer terminal portion 142 protrude downward from the base 11.

The 1 st fixed contact 21 and the 3 rd fixed contact 23 are connected to the 1 st contact support portion 131. The 1 st fixed contact 21 and the 3 rd fixed contact 23 are separate from the 1 st fixed terminal 13. The 1 st fixed contact 21 and the 3 rd fixed contact 23 are arranged apart from each other in the vertical direction (Z) in the 1 st fixed terminal 13.

The 2 nd fixed contact 22 and the 4 th fixed contact 24 are disposed apart from the 1 st fixed contact 21 and the 3 rd fixed contact 23 in the left-right direction (X). The 2 nd fixed contact 22 and the 4 th fixed contact 24 are connected to the 2 nd contact support portion 141. The 2 nd fixed contact 22 and the 4 th fixed contact 24 are separate from the 2 nd fixed terminal 14. The 2 nd fixed contact 22 and the 4 th fixed contact 24 are arranged apart from each other in the vertical direction (Z) in the 2 nd fixed terminal 14. The 1 st to 4 th fixed contacts 21 to 24 are made of a material having conductivity, such as silver or copper.

The contact device 2 includes a 1 st movable contact piece 15, a 2 nd movable contact piece 16, a 1 st movable contact 31, a 2 nd movable contact 32, a 3 rd movable contact 33, and a 4 th movable contact 34. The 1 st movable contact piece 15 and the 2 nd movable contact piece 16 extend in the left-right direction (X). The longitudinal direction of the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 coincides with the left-right direction (X). The 1 st movable contact piece 15 and the 2 nd movable contact piece 16 are separate from each other. The 1 st movable contact piece 15 and the 2 nd movable contact piece 16 are arranged apart from each other in the vertical direction (Z).

The 2 nd movable contact piece 16 is disposed above the 1 st movable contact piece 15. The 1 st movable contact piece 15 is disposed between the 2 nd movable contact piece 16 and the base 11 in the vertical direction (Z). The 1 st movable contact piece 15 and the 2 nd movable contact piece 16 are disposed opposite to the 1 st contact supporting portion 131 of the 1 st fixed terminal 13 and the 2 nd contact supporting portion 141 of the 2 nd fixed terminal 14 in the front-rear direction (Y). The 1 st movable contact piece 15 and the 2 nd movable contact piece 16 are formed of a material having conductivity such as copper, for example.

The 1 st movable contact 31 and the 2 nd movable contact 32 are separate from the 1 st movable contact piece 15. The 1 st movable contact 31 and the 2 nd movable contact 32 are connected to the 1 st movable contact piece 15. The 1 st movable contact 31 and the 2 nd movable contact 32 are arranged apart in the left-right direction (X). The 1 st movable contact 31 is disposed to face the 1 st fixed contact 21. The 2 nd movable contact 32 is disposed opposite to the 2 nd fixed contact 22.

The 3 rd movable contact 33 and the 4 th movable contact 34 are separate from the 2 nd movable contact piece 16. The 3 rd movable contact 33 and the 4 th movable contact 34 are connected to the 2 nd movable contact piece 16. The 3 rd movable contact 33 and the 4 th movable contact 34 are arranged separately in the left-right direction (X). The 3 rd movable contact 33 is disposed apart from the 1 st movable contact 31 in the vertical direction (Z). The 4 th movable contact 34 is disposed apart from the 2 nd movable contact 32 in the vertical direction (Z). The 3 rd movable contact 33 is disposed opposite to the 3 rd fixed contact 23. The 4 th movable contact 34 is disposed opposite to the 4 th fixed contact 24. The 1 st to 4 th movable contacts 31 to 34 are formed of a material having conductivity, such as silver or copper.

The contact arrangement 2 comprises a moving part 17. The moving member 17 is made of an insulating material such as resin. The moving member 17 is connected to the 1 st movable contact piece 15 and the 2 nd movable contact piece 16. The 1 st movable contact piece 15 is connected to the moving member 17 between the 1 st movable contact 31 and the 2 nd movable contact 32. The 1 st movable contact piece 15 is connected to the moving member 17 via a 1 st contact spring 51 described later. The 2 nd movable contact piece 16 is connected to the moving member 17 between the 3 rd movable contact point 33 and the 4 th movable contact point 34. The 2 nd movable contact piece 16 is connected to the moving member 17 via a 2 nd contact spring 52 described later. The 1 st movable contact piece 15 and the 2 nd movable contact piece 16 may be directly connected to the moving member 17.

The moving member 17 is provided to be movable between a closed position where the 1 st movable contact 31 is in contact with the 1 st fixed contact 21 and an open position where the 1 st movable contact 31 is separated from the 1 st fixed contact 21. When the moving member 17 is in the closed position, the 2 nd movable contact 32 is in contact with the 2 nd fixed contact 22, the 3 rd movable contact 33 is in contact with the 3 rd fixed contact 23, and the 4 th movable contact 34 is in contact with the 4 th fixed contact 24. When the moving member 17 is in the open position, the 2 nd movable contact 32 is separated from the 2 nd fixed contact 22, the 3 rd movable contact 33 is separated from the 3 rd fixed contact 23, and the 4 th movable contact 34 is separated from the 4 th fixed contact 24.

Fig. 7 is a perspective view of the moving member 17 and the periphery of the moving member 17. As shown in fig. 4 and 7, the moving member 17 includes a coupling portion 25, a 1 st support portion 41, a 2 nd support portion 42, a 1 st coupling portion 43, and a 2 nd coupling portion 44. The connection portion 25 extends in the front-rear direction (Y). The 1 st support portion 41 extends downward from the connection portion 25. The 1 st supporting portion 41 supports the 1 st movable contact piece 15. The 1 st bearing portion 41 includes a 1 st bearing hole 411. The 1 st movable contact piece 15 is disposed in the 1 st support hole 411.

The 2 nd support portion 42 extends upward from the connection portion 25. The 2 nd support portion 42 supports the 2 nd movable contact piece 16. The 2 nd bearing portion 42 includes a 2 nd bearing hole 421. The 2 nd movable contact piece 16 is disposed in the 2 nd support hole 421. The moving member 17 includes a partition wall 45. The partition wall 45 partitions the 1 st bearing hole 411 and the 2 nd bearing hole 421. The partition wall 45 is disposed between the 1 st movable contact piece 15 and the 2 nd movable contact piece 16.

The moving member 17 includes a 1 st member 17a and a 2 nd member 17 b. The 1 st member 17a and the 2 nd member 17b are separate from each other. The 1 st part 17a and the 2 nd part 17b are connected to each other by snapping. The 1 st member 17a includes the connection portion 25, a part of the 1 st support portion 41, a part of the 2 nd support portion 42, the 1 st connection portion 43, and the 2 nd connection portion 44. The 2 nd part 17b includes a portion of the 1 st support portion 41 and a portion of the 2 nd support portion 42. The 1 st and 2 nd support holes 411 and 421 are provided between the 1 st and 2 nd parts 17a and 17 b.

As shown in fig. 4, the moving member 17 is disposed with its upper end close to the case 12. The lower end of the moving member 17 is disposed on the base 11. The moving member 17 is supported by the base 11 in the vertical direction (Z).

The contact arrangement 2 comprises a 1 st contact spring 51 and a 2 nd contact spring 52. The 1 st contact spring 51 is disposed between the 1 st movable contact piece 15 and the 1 st supporting portion 41. The 1 st contact spring 51 is disposed in the 1 st supporting hole 411. In a state where the 1 st movable contact 31 is in contact with the 1 st fixed contact 21 and the 2 nd movable contact 32 is in contact with the 2 nd fixed contact 22, the 1 st contact spring 51 presses the 1 st movable contact piece 15 toward the 1 st fixed terminal 13 and the 2 nd fixed terminal 14.

The 2 nd contact spring 52 is disposed between the 2 nd movable contact piece 16 and the 2 nd supporting portion 42. The 2 nd contact spring 52 is disposed in the 2 nd supporting hole 421. In a state where the 3 rd movable contact 33 is in contact with the 3 rd fixed contact 23 and the 4 th movable contact 34 is in contact with the 4 th fixed contact 24, the 2 nd contact spring 52 presses the 2 nd movable contact piece 16 toward the 1 st fixed terminal 13 and the 2 nd fixed terminal 14.

The driving device 4 moves the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 by electromagnetic force. The driving device 4 moves the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 in the contacting direction (Y1) and the separating direction (Y2). The contact direction (Y1) is a direction in which the movable contacts 31-34 contact the fixed contacts 21-24 in the front-rear direction (Y). The separation direction (Y2) is a direction in which the movable contacts 31-34 are away from the fixed contacts 21-24 in the front-rear direction (Y). The driving device 4 is supported by the base 11. As shown in fig. 4, 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.

The coil 61 is wound around the bobbin 62. The axis of the coil 61 extends in the front-rear direction (Y). The bobbin 62 includes a hole 621 extending in the axial direction of the coil 61. At least a part of the movable core 63 is disposed in the hole 621 of the bobbin 62. The movable iron core 63 is provided movably in the contact direction (Y1) and the separation direction (Y2).

The movable iron core 63 is connected to the moving member 17. The 1 st movable contact piece 15 is electrically insulated from the movable iron core 63 by the moving member 17. The 2 nd movable contact piece 16 and the movable iron core 63 are electrically insulated by the moving member 17.

As shown in fig. 4, the coupling portion 25 of the moving member 17 includes a locking groove 59. The movable iron core 63 includes a coupling portion 66. The connecting portion 66 of the movable iron core 63 is disposed in the locking groove 59 of the moving member 17. Thereby, the connecting portion 66 is locked to the locking groove 59, and the movable iron core 63 is connected to the moving member 17.

The movable iron core 63 moves integrally with the moving member 17 in the front-rear direction (Y). The movable iron core 63 moves in the contact direction (Y1) or the separation direction (Y2) according to the magnetic force generated from the coil 61. The moving member 17 moves to the closed position or the open position in accordance with the movement of the movable iron core 63. Further, with the movement of the moving member 17, the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 move in the contacting direction (Y1) or the separating direction (Y2).

The fixed core 64 is disposed in the hole 621 of the bobbin 62. The fixed core 64 is disposed opposite to the movable 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 being energized.

The yoke 65 is disposed so as to surround the coil 61. The yoke 65 is disposed on the magnetic circuit constituted by the coil 61. As shown in fig. 4, the yoke 65 includes a 1 st yoke 67 and a 2 nd yoke 68.

The 1 st yoke 67 includes a cylindrical portion 67a, a flange portion 67b, and an extension portion 67 c. The cylindrical portion 67a is disposed in the hole 621 of the bobbin 62. The tube portion 67a extends in the front-rear direction (Y). The flange portion 67b has a rectangular outer shape and extends in the vertical direction (Z) and the horizontal direction (X). The flange portion 67b extends outward from an end portion of the tube portion 67a on the side of the separating direction (Y2). The flange portion 67b faces the moving member 17 in the front-rear direction (Y). The extending portion 67c extends downward from the center lower end portion of the flange portion 67b in the left-right direction (X). The extension 67c is inserted into the 2 nd insertion hole 11b of the base 11.

A part of the 2 nd yoke 68 is disposed on the left and right of the coil 61. The 2 nd yoke 68 is connected to the fixed core 64.

As shown in fig. 2, the relay 1 includes a 1 st return spring 53 and a 2 nd return spring 54. The 1 st return spring 53 and the 2 nd return spring 54 are disposed between the moving member 17 and the driving device 4. The 1 st return spring 53 is connected to the 1 st connecting portion 43 of the moving member 17. The 2 nd return spring 54 is connected to the 2 nd connecting portion 44. The 1 st return spring 53 and the 2 nd return spring 54 urge the movable iron core 63 in the separating direction.

Fig. 8 is a perspective view of the 1 st to 3 rd positioning members 5-7. The 1 st to 3 rd positioning members 5 to 7 are fitted into the base 11. Specifically, the 1 st to 3 rd positioning members 5 to 7 are press-fitted and fixed to the press-fitting holes 11d of the base 11. In the present embodiment, the 1 st positioning member 5, the 2 nd positioning member 6, and the 3 rd positioning member 7 are integrated. The 1 st to 3 rd positioning members 5 to 7 are preferably formed of a material having higher toughness than the base 11. The 1 st to 3 rd positioning members 5 to 7 in the present embodiment are made of, for example, nylon.

The 1 st positioning member 5 has a substantially L-shaped cross section perpendicular to the left-right direction (X). The 1 st positioning member 5 includes a press-fitting portion 5a, an abutting portion 5b, and one or more protrusions 5 c. The press-fitting portion 5a is press-fitted and fixed to the press-fitting hole 11 d. The abutting portion 5b extends in the vertical direction, and a part thereof is inserted into the 1 st insertion hole 11 a. The contact portion 5b presses the surface of the 1 st fixed terminal 13 on the side of the separating direction (Y2). The 1 st or more protrusions 5c protrude in a direction of positioning the 1 st fixed terminal 13 with respect to the base 11. That is, one or more projections 5c project in the front-rear direction (Y). In the present embodiment, one or more protrusions 5c protrude from the surface of the press-fitting portion 5a facing the contact direction (Y1) side, and extend in the vertical direction.

The 2 nd positioning member 6 is disposed between the 1 st positioning member 5 and the 3 rd positioning member 7. The 1 st positioning member 5 and the 3 rd positioning member 7 are connected by the 2 nd positioning member 6. The 2 nd positioning member 6 has a substantially rectangular shape in cross section perpendicular to the left-right direction (X). The 2 nd positioning member 6 includes a press-fitting portion 6a and one or more projections 6 b. The press-fitting portion 6a is press-fitted and fixed to the press-fitting hole 11 d. The 1 or more protrusions 6b protrude in a direction of positioning the extension portion 67c with respect to the base 11. That is, one or more projections 6b project in the front-rear direction (Y). In the present embodiment, one or more protrusions 6b protrude from the surface of the press-fitting portion 6a facing the contact direction (Y1) side, and extend in the vertical direction.

The 3 rd positioning member 7 has a substantially L-shaped cross section perpendicular to the left-right direction (X). The 3 rd positioning member 7 includes a press-fitting portion 7a, an abutting portion 7b, and one or more protrusions 7 c. The press-fitting portion 7a is press-fitted and fixed to the press-fitting hole 11 d. The abutting portion 7b extends in the vertical direction, and a part thereof is inserted into the 3 rd insertion hole 11 c. The contact portion 7b presses the surface of the 2 nd fixed terminal 14 on the side of the separating direction (Y2). The 1 st or more protrusions 7c protrude in a direction in which the 2 nd fixed terminal 14 is positioned with respect to the base 11. That is, one or more projections 7c project in the front-rear direction (Y). In the present embodiment, one or more protrusions 7c protrude from the surface of the press-fitting portion 7a facing the contact direction (Y1) side, and extend in the vertical direction.

As shown in fig. 4 to 6, the base 11 includes a 1 st positioning surface 71, a 2 nd positioning surface 72, and a 3 rd positioning surface 73. The 1 st to 3 rd positioning surfaces 71 to 73 are flat surfaces and extend in the vertical direction (X) and the horizontal direction (Y).

The 1 st positioning surface 71 positions the 1 st fixed terminal 13 in the front-rear direction (Y) with respect to the base 11. As shown in fig. 5, the 1 st positioning surface 71 faces the contact direction (Y1) side and contacts the surface of the 1 st fixed terminal 13 on the separation direction (Y2) side. The 1 st positioning member 5 presses the 1 st fixed terminal 13 against the 1 st positioning surface 71 to position the 1 st fixed terminal 13 with respect to the base 11. The 1 st positioning member 5 presses the 1 st fixed terminal 13 in the separation direction (Y2). Thereby, the 1 st fixed terminal 13 is positioned with respect to the base 11.

The 2 nd positioning surface 72 positions the drive device 4 in the front-rear direction (Y) with respect to the base 11. As shown in fig. 4, the 2 nd positioning surface 72 faces the separating direction (Y2) side and contacts the surface of the 1 st yoke 67 on the contacting direction (Y1) side of the extending portion 67 c. The 2 nd positioning member 6 presses the extension portion 67c against the 2 nd positioning surface 72 to position the extension portion 67c with respect to the base 11. The 2 nd positioning member 6 presses the extending portion 67c in the contact direction (Y1). The drive device 4 is positioned with respect to the base 11 via the extension 67 c.

The 3 rd positioning surface 73 positions the 2 nd fixing terminal 14 in the front-rear direction (Y) with respect to the base 11. As shown in fig. 6, the 3 rd positioning surface 73 faces the contact direction (Y1) side and contacts the surface of the 2 nd fixing terminal 14 on the separation direction (Y2) side. The 3 rd positioning member 7 presses the 2 nd fixing terminal 14 against the 3 rd positioning surface 73 to position the 2 nd fixing terminal 14 with respect to the base 11. Thereby, the 2 nd fixing terminal 14 is positioned with respect to the base 11.

Next, the operation of the relay 1 will be described. When the coil 61 is not energized, the driving device 4 is not excited. In this case, the moving member 17 is pressed in the separating direction together with the movable iron core 63 by the elastic force of the return springs 53 and 54, and the moving member 17 is positioned at the open position shown in fig. 2. In this state, the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 are also pressed in the separating direction via the moving member 17. Therefore, when the moving member 17 is in the open position, the 1 st movable contact 31 and the 2 nd movable contact 32 are separated from the 1 st fixed contact 21 and the 2 nd fixed contact 22. Likewise, when the moving member 17 is in the open position, the 3 rd movable contact 33 and the 4 th movable contact 34 are separated from the 3 rd fixed contact 23 and the 4 th fixed contact 24.

When the coil 61 is energized, the driving device 4 is excited. In this case, the movable iron core 63 is moved in the contact direction (Y1) against the elastic force of the return springs 53 and 54 by the electromagnetic force of the coil 61. Thereby, the moving member 17, the 1 st movable contact piece 15, and the 2 nd movable contact piece 16 all move in the contact direction (Y1). Accordingly, as shown in fig. 4, the moving member 17 moves to the closed position. As a result, when the moving member 17 is in the closed position, the 1 st movable contact 31 and the 2 nd movable contact 32 are in contact with the 1 st fixed contact 21 and the 2 nd fixed contact 22, respectively. Likewise, when the moving member 17 is in the closed position, the 3 rd movable contact 33 and the 4 th movable contact 34 are in contact with the 3 rd fixed contact 23 and the 4 th fixed contact 24, respectively. Thereby, the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 are electrically connected in parallel to each other with respect to the 1 st fixed terminal 13 and the 2 nd fixed terminal 14.

When the current flowing through the coil 61 stops and is demagnetized, the movable iron core 63 is pressed in the separating direction by the elastic force of the return springs 53 and 54. Thereby, the moving member 17, the 1 st movable contact piece 15, and the 2 nd movable contact piece 16 move together in the separating direction (Y2). Therefore, as shown in fig. 3, the moving member 17 moves to the open position. As a result, when the moving member 17 is in the open position, the 1 st movable contact 31 and the 2 nd movable contact 32 are separated from the 1 st fixed contact 21 and the 2 nd fixed contact 22. Likewise, when the moving member 17 is in the open position, the 3 rd movable contact 33 and the 4 th movable contact 34 are separated from the 3 rd fixed contact 23 and the 4 th fixed contact 24.

In the relay 1 of the present embodiment described above, the 1 st fixed terminal 13, the 2 nd fixed terminal 14, and the driving device 4 can be positioned with respect to the base 11 by the 1 st to 3 rd positioning members 5-7 fitted into the base 11. This can improve the positioning accuracy of the 1 st fixed terminal 13, the 2 nd fixed terminal 14, and the driving device 4. Further, for example, when the base 11 is formed of a thermosetting resin, since caulking fixation is not required, it is possible to prevent cracks from occurring in the base 11 due to caulking, and the 1 st fixed terminal 13 from being deformed. In addition, the base 11 is not limited to the thermosetting resin, and may be made of other kinds of resins.

While one embodiment has been described above, the present invention is not limited to the above embodiment, and various modifications may be made without departing from the scope of the invention.

In the above embodiment, the driving device 4 pushes the moving member 17 from the driving device 4 side to the contact device 2 side, thereby moving the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 in the separating direction. Further, the driving device 4 pulls the moving member 17 from the contact device 2 side to the driving device 4 side, thereby moving the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 in the contact direction. However, the direction of operation of the moving member 17 for turning on and off the contacts may be reversed from the above-described embodiment. That is, the driving device 4 may move the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 in the contact direction by pushing the moving member 17 from the driving device 4 side to the contact device 2 side. The driving device 4 may move the 1 st movable contact piece 15 and the 2 nd movable contact piece 16 in the separating direction by pulling the moving member 17 from the contact device 2 side to the driving device 4 side. That is, the contact direction and the separation direction may be opposite to those of the above embodiments.

The shape and arrangement of the 1 st fixed terminal 13, the 2 nd fixed terminal 14, the 1 st movable contact piece 15, and the 2 nd movable contact piece 16 may be changed. For example, the 1 st and 2 nd external terminal portions 132 and 142 may protrude from the base 11 in a direction different from the above embodiment. The 1 st movable contact piece 15 and the 2 nd movable contact piece 16 may be integrated. That is, the 1 st to 4 th movable contacts 31 to 34 may be connected to an integrated movable contact piece. Alternatively, the 2 nd movable contact piece 16, the 3 rd and 4 th movable contacts 33 and 34, and the 3 rd and 4 th fixed contacts 23 and 24 may be omitted. The present invention can also be applied to a hinge-type relay.

The shape and arrangement of the coil 61, the bobbin 62, the movable core 63, the fixed core 64, and the yoke 65 may be changed. The shape and arrangement of the 1 st to 4 th fixed contacts 21 to 24 may be changed. The shape and arrangement of the 1 st to 4 th movable contacts 31 to 34 may be changed.

The 1 st fixed contact 21 and/or the 3 rd fixed contact 23 may be integrated with the 1 st fixed terminal 13. The 1 st fixed contact 21 and/or the 3 rd fixed contact 23 may be a part of the 1 st fixed terminal 13 and may be flush with the other part of the 1 st fixed terminal 13. The 2 nd fixed contact 22 and/or the 4 th fixed contact 24 may also be integrated with the 2 nd fixed terminal 14. The 2 nd fixed contact 22 and/or the 4 th fixed contact 24 may be a part of the 2 nd fixed terminal 14, and may be in the same plane as the other part of the 2 nd fixed terminal 14.

The 1 st movable contact 31 and/or the 2 nd movable contact 32 may be integrated with the 1 st movable contact piece 15. The 1 st movable contact 31 and/or the 2 nd movable contact 32 may be a part of the 1 st movable contact piece 15, and may be flush with the other part of the 1 st movable contact piece 15. The 3 rd movable contact 33 and/or the 4 th movable contact 34 may be integrated with the 2 nd movable contact piece 16. The 3 rd movable contact 33 and/or the 4 th movable contact 34 may be a part of the 2 nd movable contact piece 16, and may be flush with the other part of the 2 nd movable contact piece 16.

The moving member 17 may not be supported by the housing 3. The moving member 17 may also be made of a material having electrical conductivity. The moving member 17 may be made of metal. The moving member 17 may be a shaft member that couples 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 holder.

The arrangement and shape of the 1 st to 3 rd positioning members 5-7 may be changed. For example, as shown in fig. 10, the 1 st positioning member 5, the 2 nd positioning member 6, and the 3 rd positioning member 7 may be separate from each other. Alternatively, as shown in fig. 11, only the 1 st positioning member 5 and the 3 rd positioning member 7 may be integrated. The 3 rd positioning member 7 may be omitted.

For example, the 2 nd positioning member 6 may position the driving device 4 with respect to the base 11 by positioning other components of the driving device 4 on the 2 nd positioning surface 72. For example, the bobbin 62 may be pressed against the 2 nd positioning surface 72. The shape and arrangement of the 1 st to 3 rd positioning surfaces 71 to 73 may be changed as appropriate depending on the structure of the positioning member.

The members positioned by the 1 st to 3 rd positioning members 5 to 7 are not limited to the above-described embodiments. The 1 st to 3 rd positioning members 5 to 7 may be configured to perform positioning in the left-right direction (X) with respect to the base 11, or may perform positioning in both the left-right direction (X) and the front-rear direction (Y). Alternatively, a positioning member for positioning in the left-right direction (X) may be added.

The 1 or more protrusions 5c, 6b, and 7c may be omitted, or the arrangement and number may be changed.

Claims (9)

1. A relay is characterized by comprising:

the base comprises a 1 st positioning surface and a 2 nd positioning surface;

a 1 st fixed terminal fixed with respect to the base;

a drive device supported by the base;

a 1 st positioning member that is fitted into the base, presses the 1 st fixed terminal against the 1 st positioning surface, and positions the 1 st fixed terminal with respect to the base; and

and a 2 nd positioning member which is fitted to the base, presses the driving device against the 2 nd positioning surface, and positions the driving device with respect to the base.

2. The relay according to claim 1, characterized in that:

the 1 st and 2 nd positioning members are integral.

3. The relay according to claim 1 or 2, characterized in that:

the direction in which the 1 st positioning member presses the 1 st fixed terminal is a direction opposite to the direction in which the 2 nd positioning member presses the driving device.

4. The relay according to claim 1 or 2, characterized in that:

the driving device includes a bobbin, a coil wound around the bobbin, and a yoke disposed around the bobbin,

the 2 nd positioning member presses the yoke against the 2 nd positioning surface.

5. The relay according to claim 1 or 2, characterized in that:

the 1 st positioning member includes one or more protrusions protruding in a direction in which the 1 st fixed terminal is positioned with respect to the base,

the 1 st fixed terminal is pressed against the 1 st positioning surface by the one or more protrusions of the 1 st positioning member.

6. The relay according to claim 1 or 2, characterized in that:

the 2 nd positioning member includes one or more projections projecting in a direction of positioning the driving device with respect to the base,

the driving device is pressed against the 2 nd positioning surface by one or more of the projections of the 2 nd positioning member.

7. The relay according to claim 1 or 2, further comprising:

a 2 nd fixed terminal fixed with respect to the base; and

a 3 rd positioning part embedded in the base,

the base further comprises a 3 rd positioning surface,

the 3 rd positioning member presses the 2 nd fixing terminal against the 3 rd positioning surface, and positions the 2 nd fixing terminal with respect to the base.

8. The relay according to claim 7, wherein:

the 1 st and 3 rd positioning members are integral.

9. The relay according to claim 7, wherein:

the 3 rd positioning member includes one or more protrusions protruding in a direction of positioning the 2 nd fixed terminal with respect to the base,

the 2 nd fixed terminal is pressed against the 3 rd positioning surface by the one or more projections of the 3 rd positioning member.

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