JP6667150B2 - Electromagnetic relay - Google Patents

Description

  The present invention relates to an electromagnetic relay.

  Conventionally, an electric contactor (electromagnetic relay) in which a movable contact comes into contact with and separates from a fixed contact has been known (for example, see Patent Document 1). In the electric contactor described in Patent Document 1, the movable core (movable iron core) displaces the plunger (movable shaft) in the axial direction, and the plunger displaces the contact plate (movable contact) from the retracted position to the operating position in the axial direction. By doing so, the contact plate can be brought into contact with the head (fixed contact) of the terminal in the operating position. Further, the electric contactor described in Patent Literature 1 includes a lateral wall portion of a separation plate to reduce the movement of foreign matter. The lateral wall portion described in Patent Document 1 is fixed to an inner lateral surface of the cover facing rearward at a communication portion between the front compartment and the rear compartment of the cover.

JP-A-10-308152

  However, in the conventional electromagnetic relay described in Patent Document 1, since the contact plate is movable with respect to the fixed lateral wall portion, foreign matter is inserted into the insertion hole provided in the axial bushing and into which the movable shaft is inserted. Had the problem of invading.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an electromagnetic relay capable of efficiently reducing foreign substances from entering an insertion hole into which a movable shaft is inserted.

The electromagnetic relay of the present invention includes a fixed contact, a movable contact, a movable shaft, a partition member, a first partition, and a second partition. The movable contact extends along a first axis and includes a movable contact arranged opposite to the fixed contact. The movable axis extends along a second axis orthogonal to the first axis, and moves the movable contact along the second axis to fix the movable contact in accordance with an energized state of a driving device. It is arranged so as to contact and separate from the contact. The partition member is provided around an end of the movable shaft, and includes a protrusion that projects in a cylindrical shape in a first direction along the movable shaft. The first partition is provided around the movable axis, and protrudes along the movable axis in a second direction opposite to the first direction. The second partition is provided around the first partition and protrudes in the second direction along the movable axis. The partition member is made of an insulating material.
Further, the contact device of the present invention includes a pair of fixed contacts, a movable contact, a movable shaft, and a first partition member. The movable contact comes into contact with and separates from the pair of fixed contacts. The movable shaft moves in the axial direction such that the movable contact comes into contact with and separates from the pair of fixed contacts. The first partition member is disposed on a side of the movable contact opposite to the pair of fixed contacts, and includes a first partition. The first partition is provided around the movable shaft, and is interlocked with at least one of the movable contact and the movable shaft.

  The contact device further includes a second partition member including a second partition provided around an insertion hole into which the movable shaft is inserted, and facing the first partition member in the axial direction of the movable shaft. Is preferred.

  In this contact device, it is preferable that the first partition and the second partition overlap in a direction orthogonal to the axial direction of the movable shaft.

  In this contact device, at least one of the first partition and the second partition is provided in a plurality of concentric circles around the movable shaft, and the first partition and the second partition are each provided with the movable partition. It is preferred that the axes alternately overlap in a direction perpendicular to the axial direction of the shaft.

  In this contact device, it is preferable that the tip of the first partition and the tip of the second partition face each other in the axial direction.

  In this contact device, it is preferable that the first partition includes an extension provided to extend in a direction intersecting the axial direction.

  The electromagnetic relay of the present invention includes the contact device, and a driving device that drives the movable shaft such that the movable contact contacts and separates from the pair of fixed contacts.

  According to the present invention, it is possible to efficiently reduce the intrusion of foreign matter into the insertion hole into which the movable shaft is inserted. For example, it is possible to reduce entry of foreign matter into the driving device through the insertion hole.

FIG. 3 is a cross-sectional view of the electromagnetic relay according to the first embodiment taken along line AA of FIG. 2. FIG. 2 is an external perspective view of the electromagnetic relay according to the first embodiment. FIG. 3 is a cross-sectional view of the electromagnetic relay according to the first embodiment, taken along line BB of FIG. 2. FIG. 2 is an external view of a main part of the electromagnetic relay according to the first embodiment. It is sectional drawing of the electromagnetic relay which concerns on Embodiment 2. It is sectional drawing of the electromagnetic relay which concerns on Embodiment 3. FIG. 9 is an external view of a main part of an electromagnetic relay according to a third embodiment. It is sectional drawing of the electromagnetic relay which concerns on Embodiment 4. It is an external view of the principal part of the electromagnetic relay which concerns on Embodiment 4. It is an external view of the principal part of the electromagnetic relay which concerns on Embodiment 4. It is sectional drawing of the electromagnetic relay which concerns on Embodiment 5. It is sectional drawing of the electromagnetic relay which concerns on Embodiment 6.

(Embodiment 1)
As shown in FIG. 1, the electromagnetic relay 1 according to the first embodiment includes a contact device 2, a driving device 3, and a hollow box-shaped housing 4. The housing 4 houses the contact device 2 and the drive device 3.

  The contact device 2 includes a pair of fixed terminals 21, a movable contact 22, a contact spring 23, a spring receiving portion 24 (first partition member), a movable shaft 25, an adjusting portion 26, and a yoke 27. , A contact holder 28, a case 51, a connecting body 52, and an insulating member 53.

  Each of the pair of fixed terminals 21 is formed in a substantially cylindrical shape using a conductive material such as copper. A fixed contact 211 is provided at a lower end of each fixed terminal 21. Each fixed terminal 21 is provided so as to be inserted through the through hole 511 of the case 51, and is joined to the case 51 by brazing with the upper end protruding from the upper surface of the case 51.

  The pair of fixed contacts 211 are fixed to lower ends of the pair of fixed terminals 21. Note that each fixed contact 211 may be formed integrally with the fixed terminal 21.

  The movable contact 22 comes into contact with and separates from the pair of fixed contacts 211. The movable contact 22 is formed in a plate shape that is long in the left-right direction (the left-right direction in FIG. 1), and has movable contacts 221 on both left and right sides of the upper surface. That is, the pair of movable contacts 221 are both end portions of the movable contact 22 in the left-right direction. The pair of movable contacts 221 are formed at positions facing the pair of fixed contacts 211 at a predetermined interval. The movable contact 22 is provided with a yoke 27 so as to be fitted to a substantially central portion in the left-right direction (left-right direction in FIG. 1).

  The contact pressure spring 23 is formed of a coil spring, and is disposed between the spring receiving portion 24 and the yoke 27 with the direction of expansion and contraction directed up and down. The contact pressure spring 23 is positioned with respect to the yoke 27 and the movable contact 22 by fitting the positioning protrusion 271 of the yoke 27 into the inner diameter portion on the upper end side of the contact pressure spring 23.

  The spring receiving portion 24 is formed in a substantially rectangular plate shape using an electrically insulating material such as a resin. At a substantially center of the upper surface of the base 241 of the spring receiving portion 24, a positioning protrusion 242 on a substantially disk is formed. The spring receiving portion 24 is positioned with respect to the contact pressure spring 23 by fitting the positioning convex portion 242 of the spring receiving portion 24 into the inner diameter portion on the lower end side of the contact pressure spring 23.

  The movable shaft 25 moves in the axial direction (vertical direction in FIG. 1) such that the movable contact 22 comes into contact with and separates from the pair of fixed contacts 211. The movable shaft 25 is formed in a substantially round bar shape that is long in the vertical direction. The movable iron core 34 of the driving device 3 is connected to the lower end of the movable shaft 25. The upper end of the movable shaft 25 is connected to the spring receiving portion 24. The movable shaft 25 is fixed to the movable core 34 with the through-hole 331 of the fixed iron core 33, the return spring 36, and the through-hole 341 of the movable iron core 34 inserted therethrough.

  The adjusting section 26 is formed of, for example, a substantially rectangular plate made of a magnetic material. The adjustment unit 26 is mounted on the upper surface of the movable contact 22 at a substantially central portion in the left-right direction, and is fixed to the contact holder 28. In addition, the adjustment part 26 is not limited to being formed in a plate shape, and may be formed in another shape.

  The yoke 27 is made of a magnetic material, and has a substantially U-shaped cross section with an open upper part when viewed from the left and right directions. The yoke 27 is disposed below the substantially central portion of the movable contact 22 so as to sandwich the substantially central portion of the movable contact 22 from the front-back direction. A substantially disk-shaped positioning projection 271 is formed substantially at the center of the lower surface of the yoke 27.

  The contact holder 28 includes a pair of holding portions 281 as shown in FIG. Each holding part 281 includes a bottom part 282 and a side part 283. The bottom portion 282 and the side portions 283 are formed by bending a non-magnetic material. The pair of holding portions 281 are integrally formed with the spring receiving portion 24 while being separated from each other in the front-rear direction. A spring receiving portion 24 is interposed between the bottom portion 282 and the side portion 283 and the contact pressure spring 23. That is, the spring receiving portion 24 electrically insulates the bottom portion 282 from the contact pressure spring 23.

  The pair of bottom portions 282 sandwich the movable contact 22, the yoke 27 and the contact pressure spring 23 with the adjusting portion 26 in the up-down direction. Therefore, the movable contact 22 is pressed upward by the contact pressure spring 23 and the upper surface of the movable contact 22 comes into contact with the adjusting portion 26, whereby the movement to the fixed contact 211 side is restricted. The side portion 283 extends upward from an end of the bottom portion 282. The pair of side portions 283 face each other in the front-rear direction (the left-right direction in FIG. 3). The movable contact 22 and the yoke 27 are in sliding contact with each side 283. Each of the side portions 283 abuts on the adjustment portion 26, so that the pair of side portions 283 sandwich the adjustment portion 26 in the front-rear direction. Each bottom 282 is formed, for example, in a plate shape. However, each bottom 282 is not limited to being formed in a plate shape, and may be formed in another shape. Each side part 283 is formed in, for example, a plate shape. However, each side portion 283 is not limited to being formed in a plate shape, and may be formed in another shape.

The adjusting portion 26 provided above the movable contact 22 and the yoke 27 provided below the movable contact 22 are formed of a magnetic material, and the contact holder 28 is formed of a non-magnetic material. ing. Thus, when the fixed contact 211 and the movable contact 221 come into contact with each other and a current flows through the movable contact 22, the magnetic flux passing around the movable contact 22 and passing through the adjustment unit 26 and the yoke 27 around the movable contact 22. Is formed. Then, a magnetic attractive force acts between the adjusting unit 26 and the yoke 27, and the electromagnetic attractive force generated between the fixed contact 211 and the movable contact 221 is suppressed by the magnetic attractive force, and the fixed contact 211 and the movable contact 221 are suppressed. And a decrease in contact pressure between them.

  As shown in FIG. 1, the case 51 is formed in a hollow box shape with an open lower surface from a heat-resistant material such as ceramic. Two through holes 511 are formed on the upper surface of the case 51 so as to be arranged in the left-right direction.

  The first end of the connector 52 is joined to the periphery of the opening of the case 51 by brazing. The second end of the connector 52 is joined to the first yoke plate 351 of the yoke 35 of the driving device 3 by brazing.

  The insulating member 53 includes a bottom surface 531 and a protrusion 532. An insertion hole 533 through which the movable shaft 25 is inserted is formed substantially at the center of the bottom surface portion 531. The insulating member 53 is formed from an insulating material such as ceramic or synthetic resin into a substantially hollow rectangular parallelepiped with an open upper surface, and the upper end side of the peripheral wall contacts the inner surface of the peripheral wall of the case 51. Thereby, the insulating member 53 insulates the arc generated between the fixed contact 211 and the movable contact 221 at the opening of the case 51 from the joint between the case 51 and the connecting body 52.

  By the way, in the contact device 2 of the present embodiment, as shown in FIG. 4, the spring receiving portion 24 is arranged on the side of the movable contact 22 opposite to the pair of fixed contacts 211. And the spring receiving part 24 is provided with the base part 241, the positioning convex part 242, the protrusion part 243, and the partition 244 (1st partition). The partition 244 is provided around the movable shaft 25. More specifically, the partition 244 is formed, for example, in a cylindrical shape, and is provided to extend from the base 241 toward the insulating member 53 along the axial direction of the movable shaft 25. And the partition 244 of this embodiment is interlocked with the movable contact 22 and the movable shaft 25. Here, the interlocking includes not only that when a certain member moves, other members move at the same time, but also that when a certain member moves, another member moves after a slight time delay. Note that the partition 244 may be linked with only the movable contact 22, or may be linked with only the movable shaft 25.

  By providing the partition 244 as described above, it is possible to reduce the intrusion of foreign matter generated by the contact and separation between the fixed contact 211 and the movable contact 22 into the insertion hole 533.

  Subsequently, an operation of the contact device 2 according to the present embodiment will be described. First, when the movable shaft 25 is displaced upward by the driving device 3, the spring receiving portion 24 and the contact holder 28 connected to the movable shaft 25 are displaced upward with the displacement of the movable shaft 25. The movable contact 22 moves upward with the displacement of the spring receiving portion 24 and the contact holder 28. Then, the movable contact 22 comes into contact with the pair of fixed contacts 211 to conduct between the contacts.

  Next, the driving device 3 will be described in detail.

  The driving device 3 is an electromagnet block, and drives the movable shaft 25 so that the movable contact 22 comes into contact with and separates from the pair of fixed contacts 211.

  The drive device 3 includes an excitation winding 31, a coil bobbin 32, a fixed iron core 33, a movable iron core 34, a yoke 35, a return spring 36, a cylindrical member 37, and a bush 38. Further, the drive device 3 includes a pair of coil terminals to which both ends of the exciting winding 31 are connected.

  The coil bobbin 32 is formed in a substantially cylindrical shape in which flange portions 321 and 322 are formed at upper and lower ends of a resin material, and the exciting winding 31 is wound around a cylindrical portion 323 between the flange portions 321 and 322. The inner diameter of the lower end of the cylindrical portion 323 is larger than the inner diameter of the upper end.

  The ends of the excitation winding 31 are connected to a pair of terminals provided on a flange portion 321 of the coil bobbin 32, respectively, and are connected to a pair of coil terminals via lead wires connected to the terminals. The coil terminal is formed from a conductive material such as copper, and is connected to a lead wire by solder or the like.

  The fixed iron core 33 is formed in a substantially cylindrical shape by a magnetic material, and is arranged and fixed in the coil bobbin 32. More specifically, the fixed iron core 33 is provided in a cylindrical member 37 housed in the cylindrical portion 323 of the coil bobbin 32.

  The movable core 34 is formed in a substantially cylindrical shape by a magnetic material, and is disposed in the coil bobbin 32 so as to face the fixed core 33 in the axial direction. More specifically, the movable iron core 34 is provided inside the cylindrical member 37. The movable iron core 34 is fixed to the movable shaft 25, and moves up and down in accordance with energization of the excitation winding 31. More specifically, when the excitation winding 31 is energized, the movable iron core 34 moves upward. On the other hand, when the energization to the excitation winding 31 is cut off, the movable iron core 34 moves downward.

  The yoke 35 includes a first yoke plate 351, a second yoke plate 352, and a pair of third yoke plates 353. The first yoke plate 351 is provided on the upper end side of the coil bobbin 32. The second yoke plate 352 is provided on the lower end side of the coil bobbin 32. The pair of third yoke plates 353 are provided to extend from both left and right ends of the second yoke plate 352 to the first yoke plate 351 side. The first yoke plate 351 is formed in a substantially rectangular plate shape. An insertion hole 354 is formed substantially at the center of the upper surface of the first yoke plate 351. The upper end of the fixed iron core 33 is inserted into the insertion hole 354.

  The return spring 36 is inserted into a lower portion of the through hole 331 of the fixed iron core 33 and an upper portion of the through hole 341 of the movable iron core 34. The return spring 36 is provided in a compressed state between the fixed iron core 33 and the movable iron core 34 and elastically urges the movable iron core 34 downward.

  The cylindrical member 37 is formed in a cylindrical shape with a bottom, and is housed in the cylindrical portion 323 of the coil bobbin 32. A flange 371 is formed at the upper end of the cylindrical member 37. The flange 371 is located between the flange 321 of the coil bobbin 32 and the first yoke plate 351. Here, the movable iron core 34 is provided at a lower end side in the cylindrical portion 372 of the cylindrical member 37. Further, a fixed iron core 33 is provided in the cylindrical portion 372.

  The bush 38 is formed in a cylindrical shape from a magnetic material. The bush 38 is fitted into a gap formed between the inner peripheral surface on the lower end side of the coil bobbin 32 and the outer peripheral surface of the cylindrical member 37. The bush 38 forms a magnetic circuit with the first to third yoke plates 351 to 353, the fixed core 33, and the movable core 34.

  Next, the housing 4 will be described in detail.

  The housing 4 is formed of a resin material into a substantially rectangular box shape, and includes a hollow box-shaped housing body 41 having an open upper surface, and a hollow box-shaped cover 42 that covers the opening of the housing body 41. I have.

  As shown in FIG. 2, the housing body 41 is provided with a pair of protrusions 411 at the front ends of the left and right side walls, each having a through-hole used for fixing the electromagnetic relay 1 to the mounting surface by screwing. . Further, as shown in FIG. 1, a step portion 412 is formed on the periphery of the opening on the upper end side of the housing main body 41, and the inner diameter of the upper end is larger than that of the lower end side.

  The cover 42 is formed in a hollow box shape with an open lower surface. The upper surface 421 of the cover 42 is formed with a partition 422 that substantially divides the upper surface 421 into two right and left parts. A pair of insertion holes 423 through which the fixed terminals 21 are inserted are formed in the upper surface 421 divided into two by the partition 422.

  When the contact device 2 and the driving device 3 are stored in the housing 4, the lower cushion rubber 43 is interposed between the second yoke plate 352 of the yoke 35 and the bottom surface 413 of the housing body 41. Is done. An upper cushion rubber 44 having an insertion hole 441 through which the fixed terminal 21 is inserted is interposed between the case 51 and the cover 42.

  In the electromagnetic relay 1 having the above configuration, the movable iron core 34 slides downward by the urging force of the return spring 36, and the movable shaft 25 also moves downward. Thus, when the movable contact 22 is pressed downward by the adjustment unit 26, the movable contact 22 moves downward together with the adjustment unit 26. Therefore, the movable contact 221 is separated from the fixed contact 211 in the initial state.

  Then, when the exciting winding 31 is energized and the movable core 34 is attracted to the fixed core 33 and slides upward, the movable shaft 25 connected to the movable core 34 also moves upward in conjunction therewith. Accordingly, the spring receiving portion 24 (contact holder 28) connected to the movable shaft 25 moves toward the fixed contact 211, and the movable contact 22 also moves upward with the movement of the contact holder 28. Then, the movable contact 221 comes into contact with the fixed contact 211, and the contact is conducted.

  When the power supply to the excitation winding 31 is turned off, the movable iron core 34 slides downward due to the urging force of the return spring 36, and the movable shaft 25 moves downward accordingly. As a result, the spring receiving portion 24 (contact holder 28) also moves downward, and the movable contact 22 also moves downward with the movement of the contact holder 28, so that the fixed contact 211 and the movable contact 221 are separated from each other. I do.

  In the contact device 2 of the electromagnetic relay 1 according to the present embodiment, the pair of movable contacts 221 is a part of the movable contact 22 and is provided integrally with the movable contact 22. As a modification, the pair of movable contacts may be provided separately from the movable contact 22. Also in the contact device 2, the movable contact provided separately from the movable contact moves integrally with the movable contact 22 by the movement of the movable shaft 25, and the movable contact comes into contact with and separates from the fixed contact 211. .

  In the contact device 2 according to the present embodiment described above, the partition 244 is provided at a position (contact portion) where the movable contact 22 comes into contact with or separates from the pair of fixed contacts 211, that is, near a position where foreign matter is generated. Thus, it is possible to efficiently reduce the intrusion of foreign matter into the insertion hole 533 of the movable shaft 25 with a simple configuration. That is, it is possible to reduce entry of foreign matter into the driving device 3 through the insertion hole 533.

(Embodiment 2)
The contact device 2 according to the second embodiment is different from the contact device 2 according to the first embodiment (see FIG. 1) in that a partition 534 is provided on an insulating member 53 as shown in FIG. Note that the same components as those of the electromagnetic relay 1 of the first embodiment (see FIG. 1) are denoted by the same reference numerals and description thereof is omitted.

  The insulating member 53 of the present embodiment includes a partition 534 (second partition) provided around an insertion hole 533 into which the movable shaft 25 is inserted. That is, the insulating member 53 includes the bottom surface 531, the protrusion 532, and the partition 534. The partition 534 extends from the bottom surface 531 toward the spring receiving portion 24 (first partition member) along the axial direction of the movable shaft 25. The insulating member 53 faces the spring receiving portion 24 in the axial direction of the movable shaft 25 (vertical direction). The description of the same functions as those of the insulating member 53 of the first embodiment (see FIG. 1) is omitted.

  In the contact device 2 according to the present embodiment described above, the partitions 244 and 534 are provided near a portion (contact portion) where the movable contact 22 comes into contact with and separate from the pair of fixed contacts 211, that is, near a location where foreign matter is generated. Thus, it is possible to efficiently reduce the intrusion of foreign matter into the insertion hole of the movable shaft 25 with a simple configuration.

(Embodiment 3)
The contact device 2 according to the third embodiment is different from the contact device 2 according to the second embodiment in that the partition 244 of the spring receiving portion 24 and the partition 534 of the insulating member 53 overlap as shown in FIG. Is different from Note that the same components as those of the electromagnetic relay 1 of Embodiment 2 (see FIG. 5) are denoted by the same reference numerals and description thereof is omitted.

  In this embodiment, the partition 244 (first partition) of the spring receiving portion 24 (first partition member) and the partition 534 (second partition) of the insulating member 53 (second partition member) They are provided so as to overlap in a direction perpendicular to the axial direction. More specifically, as shown in FIG. 7, the insulating member 53 includes a bottom surface 531, a protrusion 532, and a partition 534. The partition 534 extends from the bottom surface 531 toward the spring receiving portion 24 along the axial direction of the movable shaft 25. The partition 244 and the partition 534 overlap in a direction orthogonal to the axial direction of the movable shaft 25. The description of the same functions as those of the spring receiving portion 24 and the insulating member 53 (see FIG. 5) of the second embodiment will be omitted.

  In the contact device 2 according to the present embodiment described above, the partition 244 (first partition) of the spring receiving portion 24 and the partition 534 (second partition) of the insulating member 53 overlap each other, so that the moving path of the foreign substance is long. In addition, the invasion of foreign matter can be further reduced.

(Embodiment 4)
The contact device 2 according to the fourth embodiment is different from the contact device 2 according to the third embodiment (see FIG. 6) in that a plurality of partitions 244, 534, and 535 overlap each other as shown in FIGS. Note that the same components as those of the electromagnetic relay 1 of Embodiment 3 (see FIG. 6) are denoted by the same reference numerals and description thereof is omitted.

  A plurality of partition walls 534 and 535 of the insulating member 53 of the present embodiment are provided concentrically around the movable shaft 25. That is, as shown in FIG. 10, the insulating member 53 includes a bottom surface 531, a protruding portion 532, and two partition walls 534 and 535. In the present embodiment, the partitions 244 and the partitions 534 and 535 alternately overlap in a direction orthogonal to the movable shaft 25. The description of the same functions as those of the spring receiving portion 24 and the insulating member 53 (see FIG. 6) of the first embodiment will be omitted.

  In the contact device 2 according to the present embodiment described above, the moving path of the foreign matter is formed in a labyrinth shape by the partition 244 (first partition) of the spring receiving portion 24 and the partition 534, 535 (second partition) of the insulating member 53. In addition, the invasion of foreign matter can be further reduced.

  Instead of the partition wall of the insulating member 53, a plurality of partition walls of the spring receiving portion 24 may be provided concentrically around the movable shaft 25, and either the partition wall of the spring receiving portion 24 or the partition wall of the insulating member 53 may be provided. May be provided concentrically around the movable shaft 25.

(Embodiment 5)
As shown in FIG. 11, the contact device 2 according to the fifth embodiment differs from the contact device 2 according to the second embodiment (see FIG. 5) in that the tips of the corresponding partition walls 244 and 534 face each other. I do. Note that the same components as those of the electromagnetic relay 1 of Embodiment 2 (see FIG. 5) are denoted by the same reference numerals and description thereof is omitted.

  In the contact device 2 of the present embodiment, the tip of the partition 244 (first partition) of the spring receiving portion 24 and the tip of the partition (second partition) of the insulating member 53 face each other in the axial direction of the movable shaft 25. are doing. That is, the partition 244 and the partition 534 are cylinders having the same radius. The description of the same functions as those of the spring receiving portion 24 and the insulating member 53 (see FIG. 5) of the second embodiment will be omitted.

  In the contact device 2 according to the present embodiment described above, the partition 244 (first partition) of the spring receiving portion 24 and the partition (second partition) of the insulating member 53 come into contact with each other in the axial direction of the movable shaft 25. In addition, the size can be reduced.

(Embodiment 6)
The contact device 2 according to the sixth embodiment is different from the contact device 2 according to the first embodiment in that a partition 244 is provided so as to block an upper part and a lower part of the spring receiving part 24 as shown in FIG. (See FIG. 1). Note that the same components as those of the electromagnetic relay 1 of the first embodiment (see FIG. 1) are denoted by the same reference numerals and description thereof is omitted.

  In the spring receiving portion 24 of the present embodiment, the partition 244 (first partition) includes an extending portion provided to extend in a direction intersecting the axial direction of the movable shaft 25. That is, the partition wall 244 has a base portion extending from the base portion 241 in the axial direction of the movable shaft 25 and a distal end portion extending in a direction intersecting the axial direction. The description of the same functions as those of the spring receiving portion 24 (see FIG. 1) of the first embodiment will be omitted.

  In the contact device 2 according to the present embodiment described above, the gap between the protrusion 532 located in the circumferential direction and the partition 244 can be reduced, so that the moving path of the foreign matter can be lengthened.

DESCRIPTION OF SYMBOLS 1 Electromagnetic relay 2 Contact device 211 Fixed contact 22 Movable contact 24 Spring receiving part (1st partition member)
243 Projection 244 Partition (first partition)
25 movable shaft 3 driving device 53 insulating member (second partition member)
533 insertion hole 534 partition (first partition)
535 partition (second partition)

Claims (8)

Fixed contacts,
A movable contact extending along the first axis and including a movable contact disposed opposite to the fixed contact;
The movable contact extends along a second axis orthogonal to the first axis, and moves the movable contact along the second axis to move the movable contact toward and away from the fixed contact according to an energized state of a driving device. A movable shaft arranged like
A partition member provided around the end of the movable shaft and including a protruding portion that projects in a cylindrical shape in the first direction along the movable shaft;
A first partition wall provided around the movable axis and protruding along a second direction opposite to the first direction along the movable axis;
A second partition provided around the first partition and protruding in the second direction along the movable axis;
Equipped with a,
The partition member is made of an insulating material,
Power磁継electronics. The first partition is made of an insulating material;
The electromagnetic relay according to claim 1. The protrusion overlaps the first partition in a direction orthogonal to the second axis,
The electromagnetic relay according to claim 1. The driving device is disposed so as to surround at least a part of the movable shaft, and
The first partition and the second partition are arranged above an upper surface of the driving device on the movable contact side,
The electromagnetic relay according to claim 1. The driving device includes a coil bobbin having a cylindrical portion, an exciting winding wound around the cylindrical portion, and a yoke plate disposed closer to the movable contact than the coil bobbin,
The electromagnetic relay according to claim 1. When viewed along the second axis, the protrusion, the first partition, and the second partition are provided coaxially with the movable shaft.
The electromagnetic relay according to claim 1. The first partition has a cylindrical shape,
The electromagnetic relay according to claim 1. The second partition has a cylindrical shape,
The electromagnetic relay according to claim 1.

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