WO2020100511A1 - Relay - Google Patents

Relay Download PDF

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Publication number
WO2020100511A1
WO2020100511A1 PCT/JP2019/040796 JP2019040796W WO2020100511A1 WO 2020100511 A1 WO2020100511 A1 WO 2020100511A1 JP 2019040796 W JP2019040796 W JP 2019040796W WO 2020100511 A1 WO2020100511 A1 WO 2020100511A1
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WO
WIPO (PCT)
Prior art keywords
storage chamber
movable
contact
movable contact
passage
Prior art date
Application number
PCT/JP2019/040796
Other languages
French (fr)
Japanese (ja)
Inventor
西田　剛
達郎 加藤
開 濱
Original Assignee
オムロン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オムロン株式会社 filed Critical オムロン株式会社
Publication of WO2020100511A1 publication Critical patent/WO2020100511A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/12—Ventilating; Cooling; Heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements

Definitions

  • the present invention relates to a relay.
  • the relay includes a housing including a first storage chamber.
  • a fixed contact, a movable contact, and a movable contact piece are arranged in the first storage chamber.
  • a movable iron core is arranged in the second storage chamber outside the first storage chamber.
  • the movable shaft is arranged across the first storage chamber and the second storage chamber. The first storage chamber and the second storage chamber communicate with each other via a communication passage. The movable shaft is inserted in the communication passage.
  • the movable contact comes into contact with the fixed contact by moving the movable iron core from the first storage chamber to the second storage chamber due to the magnetic force of the coil. Conversely, the movable core moves in the direction from the second storage chamber to the first storage chamber, so that the movable contact is separated from the fixed contact.
  • the purpose of the present invention is to suppress the occurrence of return bounce in the relay.
  • the relay includes a housing, a fixed contact, a movable contact, a movable contact piece, a movable shaft, a movable iron core, a coil, and a communication path.
  • the housing includes a first storage chamber and separates the first storage chamber from the second storage chamber outside the first storage chamber.
  • the fixed contact is arranged in the first storage chamber.
  • the movable contact is arranged in the first storage chamber.
  • the movable contact is provided so as to be movable between a closed position and an open position. In the closed position, the movable contact contacts the fixed contact. In the open position, the movable contact separates from the fixed contact.
  • the movable contact piece is arranged in the first storage chamber.
  • a movable contact is connected to the movable contact piece.
  • the movable shaft extends from the first storage chamber toward the second storage chamber and is connected to the movable contact piece.
  • the movable iron core is connected to the movable shaft in the second storage chamber.
  • the movable core moves the movable contact from the open position to the closed position by moving in the direction from the first storage chamber to the second storage chamber.
  • the movable core moves the movable contact from the closed position to the open position by moving in the direction from the second storage chamber to the first storage chamber.
  • the coil generates a magnetic force that moves the movable iron core.
  • a movable shaft is inserted in the communication passage.
  • the communication passage connects the first storage chamber and the second storage chamber.
  • the communication passage includes a first passage arranged on the first storage chamber side and a second passage arranged on the second storage chamber side. The second gap between the second passage and the movable shaft is larger than the first gap between the first passage and the movable shaft.
  • the second gap between the second passage and the movable shaft is larger than the first gap between the first passage and the movable shaft. Therefore, the air flowing from the first storage chamber to the second storage chamber due to the pressure increase in the first storage chamber is decelerated when flowing into the second passage from the first passage. Therefore, it is possible to prevent the movable contact from returning to the fixed contact side due to the weakening of the force with which the air pushes the movable iron piece. As a result, the occurrence of return bounce can be suppressed.
  • the communication passage may further include a regulation unit.
  • the restriction portion may restrict the movement of the movable core toward the first storage chamber by contacting the movable core.
  • the second passage may be located closer to the first storage chamber than the regulation section. In this case, when the contact is restored, the movable iron core comes into contact with the restricting portion to restrict the movement of the movable iron core to the first storage chamber side.
  • the relay may further include a guide.
  • the guide may extend from the communication passage toward the fixed contact or the movable contact.
  • the air flowing from the second storage chamber to the first storage chamber through the communication passage causes the fixed contact or the movable contact by the guide. Will be guided towards. Thereby, the fixed contact or the movable contact can be cooled.
  • the guide may be arranged along the movable contact piece. In this case, air can be guided toward the fixed contact or the movable contact by the guide and the movable contact piece. Thereby, the fixed contact or the movable contact can be cooled more effectively.
  • the guide may include walls.
  • the wall may project toward the movable contact piece and extend toward the fixed contact or the movable contact.
  • the walls can guide the air towards the fixed or movable contacts. Thereby, the fixed contact or the movable contact can be cooled more effectively.
  • the guide may include a groove.
  • the groove may be recessed in a direction away from the movable contact piece, and may extend toward the fixed contact or the movable contact. In this case, the groove allows the air to be guided towards the fixed or movable contact. Thereby, the fixed contact or the movable contact can be cooled more effectively.
  • FIG. 6 is an enlarged view of a communication path and its surroundings when a movable contact is in a closed position.
  • FIG. 6 is an enlarged view of a communication path and its surroundings when a movable contact is in an open position.
  • It is an enlarged view of a relay concerning the 1st modification.
  • It is an enlarged view of a relay concerning the 2nd modification.
  • It is a perspective view of the guide of the relay which concerns on a 2nd modification.
  • FIG. 1 is a side sectional view showing a relay 1 according to the embodiment.
  • the relay 1 includes a contact device 2, a housing 3, and a drive device 4.
  • the up, down, left, and right directions mean the up, down, left, and right directions in FIG.
  • the direction from the drive device 4 to the contact device 2 is defined as the upper side.
  • the direction from the contact device 2 to the drive device 4 is defined as downward.
  • the direction intersecting with the vertical direction is defined as the horizontal direction.
  • a direction intersecting the vertical direction and the horizontal direction is defined as the front-back direction.
  • the front-back direction is a direction perpendicular to the paper surface of FIG.
  • these directions are defined for convenience of description, and do not limit the arrangement direction of the relay 1.
  • the contact device 2 includes a first fixed terminal 11, a second fixed terminal 12, a movable contact piece 13, a first movable contact 16, and a second movable contact 17.
  • the first fixed terminal 11 and the second fixed terminal 12 are made of a conductive material such as copper.
  • a first fixed contact 14 is provided on the first fixed terminal 11.
  • a second fixed contact 15 is provided on the second fixed terminal 12. The first fixed contact 14 and the second fixed contact 15 are arranged apart from each other in the left-right direction.
  • the first fixed terminal 11 includes a first contact support portion 21 and a first external terminal portion 22.
  • the first fixed contact 14 is connected to the first contact support portion 21.
  • the first external terminal portion 22 is connected to the first contact support portion 21.
  • the first external terminal portion 22 projects outward from the housing 3.
  • the second fixed terminal 12 includes a second contact support portion 23 and a second external terminal portion 24.
  • the second fixed contact 15 is connected to the second contact support portion 23.
  • the second external terminal portion 24 is connected to the second contact support portion 23.
  • the second external terminal portion 24 projects outward from the housing 3.
  • first external terminal portion 22 and the second external terminal portion 24 project upward from the housing 3.
  • first external terminal portion 22 and the second external terminal portion 24 may project from the housing 3 not only in the upper direction but also in other directions such as the left-right direction or the front-back direction.
  • the movable contact piece 13 is made of a conductive material such as copper.
  • the movable contact piece 13 extends in the left-right direction.
  • the longitudinal direction of the movable contact piece 13 corresponds to the left-right direction.
  • the movable contact piece 13 is arranged so as to face the first fixed terminal 11 and the second fixed terminal 12 in the vertical direction.
  • the movable contact piece 13 is arranged so as to be movable in the contact direction Z1 and the opening direction Z2.
  • the contact direction Z1 is a direction in which the movable contact piece 13 approaches the first fixed terminal 11 and the second fixed terminal 12 (downward in FIG. 1).
  • the separation direction Z2 is a direction in which the movable contact piece 13 separates from the first fixed terminal 11 and the second fixed terminal 12 (upward in FIG. 1).
  • the first movable contact 16 and the second movable contact 17 are supported by the movable contact piece 13.
  • the first movable contact 16 and the second movable contact 17 are arranged apart from each other in the left-right direction.
  • the first movable contact 16 faces the first fixed contact 14 in the vertical direction.
  • the first movable contact 16 is arranged above the first fixed contact 14.
  • the second movable contact 17 faces the second fixed contact 15 in the vertical direction.
  • the second movable contact 17 is arranged above the second fixed contact 15.
  • the contact device 2 includes a movable shaft 19 and a contact spring 27.
  • the movable shaft 19 extends in the vertical direction.
  • the movable shaft 19 is connected to the movable contact piece 13.
  • the movable shaft 19 extends downward from the movable contact piece 13.
  • the contact spring 27 biases the movable contact piece 13 in the contact direction Z1 while the movable contacts 16 and 17 are in contact with the fixed contacts 14 and 15.
  • the housing 3 houses the contact device 2.
  • the housing 3 includes a first storage chamber S1.
  • the fixed contacts 14 and 15, the movable contact piece 13, and the movable contacts 16 and 17 are arranged in the first storage chamber S1.
  • the drive device 4 is arranged outside the first storage chamber S1.
  • the drive device 4 operates the movable contact piece 13 by electromagnetic force.
  • the drive device 4 moves the movable contact piece 13 in the contact direction Z1 and the opening direction Z2.
  • the drive device 4 is arranged below the housing 3.
  • the drive device 4 includes a spool 30, a movable iron core 31, a coil 32, a fixed iron core 33, a yoke 34, and a return spring 35.
  • the spool 30 includes a hole 301 that extends vertically through the spool 30.
  • the hole 301 constitutes the second storage chamber S2 in which the movable iron core 31 is arranged.
  • the second storage chamber S2 may be provided in a portion other than the spool 30.
  • the movable iron core 31 is a separate body from the fixed iron core 33.
  • the movable shaft 19 extends from the first storage chamber S1 toward the second storage chamber S2.
  • the movable iron core 31 is connected to the movable shaft 19 in the second storage chamber S2.
  • the movable iron core 31 is provided so as to be movable in the contact direction Z1 and the opening direction Z2.
  • the contact direction Z1 is a direction from the first storage chamber S1 toward the second storage chamber S2.
  • the opening direction Z2 is a direction from the second storage chamber S2 to the first storage chamber S1.
  • the coil 32 is wound around the spool 30. The coil 32 is energized to generate an electromagnetic force that moves the mov
  • the fixed iron core 33 is arranged in the second storage chamber S2.
  • the fixed iron core 33 is arranged to face the movable iron core 31.
  • the return spring 35 is arranged between the movable iron core 31 and the fixed iron core 33. The return spring 35 biases the movable iron core 31 in the opening direction Z2.
  • the yoke 34 is arranged so as to surround the coil 32.
  • the yoke 34 is arranged on the magnetic circuit formed by the coil 32.
  • the yoke 34 is arranged above the coil 32, on the side of the coil 32, and below the coil 32. Further, a part 341 of the yoke 34 is arranged in the second storage chamber S2. A part 341 of the yoke 34 is arranged around the movable iron core 31.
  • relay 1 When the coil 32 is not energized, the drive device 4 is not excited. In this case, the movable shaft 19 is pressed in the opening direction Z2 by the elastic force of the return spring 35 together with the movable iron core 31. Therefore, the movable contact piece 13 is also pressed in the opening direction Z2, and the movable contacts 16 and 17 are located at the open position shown in FIG. In the state where the movable contacts 16 and 17 are located at the open position, the first movable contact 16 and the second movable contact 17 are separated from the first fixed contact 14 and the second fixed contact 15.
  • the drive device 4 When the coil 32 is energized, the drive device 4 is excited. In this case, the electromagnetic force of the coil 32 causes the movable iron core 31 to move in the contact direction Z1 against the elastic force of the return spring 35. As a result, both the movable shaft 19 and the movable contact piece 13 move in the contact direction Z1, and the movable contacts 16 and 17 move to the closed position shown in FIG. When the movable contacts 16 and 17 are in the closed position, the first movable contact 16 and the second movable contact 17 are in contact with the first fixed contact 14 and the second fixed contact 15, respectively.
  • the housing 3 described above includes a partition wall 40.
  • the partition wall 40 is arranged between the contact device 2 and the drive device 4.
  • the partition wall 40 is arranged below the contact device 2.
  • the partition wall 40 is disposed above the drive device 4.
  • the first storage chamber S1 and the second storage chamber S2 are partitioned by a partition wall 40.
  • a communication path 41 is provided in the partition wall 40.
  • the communication passage 41 connects the first storage chamber S1 and the second storage chamber S2.
  • the movable shaft 19 is inserted into the communication passage 41.
  • FIG. 3 is an enlarged view of the communication passage 41 and its surroundings when the movable contacts 16 and 17 are in the closed position.
  • FIG. 4 is an enlarged view of the communication passage 41 and its surroundings when the movable contacts 16 and 17 are in the open position.
  • the communication passage 41 includes a first passage 42 arranged on the first storage chamber S1 side and a second passage 43 arranged on the second storage chamber S2 side.
  • the first passage 42 opens toward the first storage chamber S1.
  • the second passage 43 opens toward the second storage chamber S2.
  • the second passage 43 is smaller than the outer shape of the movable iron core 31.
  • the second passage 43 is larger than the first passage 42. That is, the opening area of the second passage 43 is larger than the opening area of the first passage 42.
  • the opening area of the second passage 43 means the projected area of the second passage 43 in the vertical direction.
  • the opening area of the first passage 42 means the projected area of the first passage 42 in the vertical direction.
  • the second gap G2 between the second passage 43 and the movable shaft 19 is larger than the first gap G1 between the first passage 42 and the movable shaft 19.
  • a step portion 44 is provided between the first passage 42 and the second passage 43.
  • a taper portion may be provided instead of the step portion 44.
  • the tapered portion may be provided so as to expand from the first passage 42 side toward the second passage 43 side.
  • the communication passage 41 includes a regulation unit 45. As shown in FIG. 4, the restricting portion 45 restricts the movement of the movable iron core 31 toward the first storage chamber S1 by coming into contact with the movable iron core 31. When the movable contacts 16 and 17 are in the open position, the movable iron core 31 is in contact with the restriction portion 45.
  • the second passage 43 is located closer to the first storage chamber S1 than the regulating portion 45. The second passage 43 has a shape recessed from the restriction portion 45 toward the first storage chamber S1.
  • the second gap G2 between the second passage 43 and the movable shaft 19 is larger than the first gap G1 between the first passage 42 and the movable shaft 19. large. Therefore, the air flowing from the first storage chamber S1 to the second storage chamber S2 due to the pressure increase in the first storage chamber S1 is decelerated when flowing into the second passage 43 from the first passage 42. Therefore, it is possible to prevent the movable contacts 16 and 17 from returning to the fixed contacts 14 and 15 side due to the weakening of the force of the air pushing the movable iron piece 31. As a result, the occurrence of return bounce can be suppressed.
  • the shape or arrangement of the first fixed terminal 11, the second fixed terminal 12, and the movable contact piece 13 may be changed.
  • the shape or arrangement of the spool 30, the movable iron core 31, the coil 32, the fixed iron core 33, or the yoke 34 may be changed.
  • the shape or arrangement of the first fixed contact 14, the second fixed contact 15, the first movable contact 16, and the first fixed contact 14 may be changed.
  • the first fixed contact 14 may be separate from the first fixed terminal 11 or may be integrated.
  • the second fixed contact 15 may be separate from the second fixed terminal 12 or may be integrated with the second fixed terminal 12.
  • the first movable contact 16 may be a separate body from the movable contact piece 13 or may be an integral body.
  • the second movable contact 17 may be a separate body from the movable contact piece 13 or may be an integral body.
  • FIG. 5 is a diagram showing a first modification of the relay 1.
  • the relay 1 may further include guides 51 and 52.
  • the guides 51 and 52 may be arranged along the movable contact piece 13.
  • the guides 51 and 52 may face the movable contact piece 13 below the movable contact piece 13.
  • the guides 51 and 52 may include the first guide 51 and the second guide 52.
  • the first guide 51 may extend from the communication passage 41 toward the first fixed contact 14 or the first movable contact 16 in the left-right direction.
  • the second guide 52 may extend from the communication passage 41 toward the second fixed contact 15 or the second movable contact 17 in the left-right direction.
  • the air flowing from the second storage chamber S2 to the first storage chamber S1 via the communication passage 41. are guided by the guides 51, 52 toward the fixed contacts 14, 15 or the movable contacts 16, 17. Thereby, the fixed contacts 14 and 15 or the movable contacts 16 and 17 can be cooled more effectively.
  • the guides 51 and 52 may include walls 53 and 54.
  • the walls 53 and 54 may project toward the movable contact piece 13, that is, upward.
  • the walls 53, 54 may extend toward the fixed contacts 14, 15 or the movable contacts 16, 17 in the left-right direction.
  • the walls 53 and 54 may include a first wall 53 and a second wall 54.
  • the first wall 53 and the second wall 54 may be arranged at intervals in the front-rear direction.
  • the first wall 53 and the second wall 54 may extend along the movable contact piece 13, that is, in the left-right direction.
  • the guides 51, 52 may also include grooves 55, 56.
  • the grooves 55 and 56 may be recessed in a direction away from the movable contact piece 13, that is, downward.
  • the grooves 55 and 56 may include the first groove 55 and the second groove 56.
  • the first groove 55 may extend toward the first fixed contact 14 or the first movable contact 16 in the left-right direction.
  • the second groove 56 may extend toward the second fixed contact 15 or the second movable contact 17 in the left-right direction.
  • the air can be guided toward the fixed contacts 14 and 15 or the movable contacts 16 and 17 by the walls 53 and 54 and the grooves 55 and 56.
  • the guides 51 and 52 are not limited to both the walls 53 and 54 and the grooves 55 and 56, and may include only one. That is, the guides 51 and 52 may include only the walls 53 and 54. Alternatively, the guides 51, 52 may include only the grooves 55, 56.
  • FIG. 8 is a diagram showing a third modification of the relay 1.
  • a buffer member 46 may be arranged between the communication passage 41 and the movable iron core 31.
  • the communication passage 41 may be in contact with the movable iron core 31 via the cushioning member 46.
  • the cushioning member 46 may be made of an elastic member such as rubber.
  • a spacer may be arranged between the buffer member 46 and the movable iron core 31, and / or between the buffer member 46 and the restriction member 46.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

A movable iron core of the present invention moves in a direction from a first storage chamber toward a second storage chamber, thereby causing a movable contact to move from an open position to a closed position. Furthermore, the movable iron core moves in a direction from the second storage chamber toward the first storage chamber, thereby causing the movable contact to move from the closed position to the open position. A connection passage connects the first storage chamber and the second storage chamber. The connection passage includes a first passage disposed on the first storage chamber side and a second passage disposed on the second storage chamber side. A second gap between the second passage and a movable shaft is larger than a first gap between the first passage and the movable shaft.

Description

リレーrelay
　本発明は、リレーに関する。 The present invention relates to a relay.
　リレーには、可動軸をコイル側に引き込むことで接点を閉じるものがある（例えば、特許文献１参照）。当該リレーは、第１収納室を含むハウジングを備えている。第１収納室には、固定接点と可動接点と可動接触片とが配置される。第１収納室外の第２収納室には、可動鉄心が配置される。可動軸は、第１収納室と第２収納室とに亘って配置されている。第１収納室と第２収納室とは、連通路を介して連通している。可動軸は、連通路に挿入されている。 Some relays close the contacts by pulling the movable shaft toward the coil side (for example, see Patent Document 1). The relay includes a housing including a first storage chamber. A fixed contact, a movable contact, and a movable contact piece are arranged in the first storage chamber. A movable iron core is arranged in the second storage chamber outside the first storage chamber. The movable shaft is arranged across the first storage chamber and the second storage chamber. The first storage chamber and the second storage chamber communicate with each other via a communication passage. The movable shaft is inserted in the communication passage.
　上記のリレーでは、コイルによる磁力によって、可動鉄心が第１収納室から第２収納室に向かう方向に移動することで、可動接点が固定接点に接触する。逆に、可動鉄心が第２収納室から第１収納室に向かう方向に移動することで、可動接点が固定接点から開離する。 In the above relay, the movable contact comes into contact with the fixed contact by moving the movable iron core from the first storage chamber to the second storage chamber due to the magnetic force of the coil. Conversely, the movable core moves in the direction from the second storage chamber to the first storage chamber, so that the movable contact is separated from the fixed contact.
特開２０１６－２４８６４JP, 2016-24864, A
　上述したリレーにおいて、可動接点が固定接点から開離するとき、可動接点と固定接点との間にアークが発生する場合がある。その場合、第１収納室内の温度が上昇することで、第１収納室内の圧力が上昇する。それにより、第１収納室の空気が、連通路を通って、第２収納室に流入する。 In the relay described above, when the movable contact is separated from the fixed contact, an arc may occur between the movable contact and the fixed contact. In that case, the temperature in the first storage chamber rises, so that the pressure in the first storage chamber rises. As a result, the air in the first storage chamber flows into the second storage chamber through the communication passage.
　連通路を通って第２収納室に流入した空気が可動鉄心を押すと、可動鉄心は、可動接点が固定接点に向かう方向に動作する。そのため、接点の復帰時に、可動接点が、固定接点側に戻ってしまうバウンスという現象が生じてしまう。 When the air flowing into the second storage chamber through the communication passage pushes the movable iron core, the movable iron core moves in the direction in which the movable contact points toward the fixed contact. Therefore, when the contact is restored, a phenomenon of bounce occurs in which the movable contact returns to the fixed contact side.
　本発明の目的は、リレーにおいて復帰バウンスの発生を抑えることにある。 The purpose of the present invention is to suppress the occurrence of return bounce in the relay.
　一態様に係るリレーは、ハウジングと、固定接点と、可動接点と、可動接触片と、可動軸と、可動鉄心と、コイルと、連通路とを備える。ハウジングは、第１収納室を含み、第１収納室を第１収納室外の第２収納室から区画している。固定接点は、第１収納室内に配置される。可動接点は、第１収納室内に配置される。可動接点は、閉位置と開位置とに移動可能に設けられる。閉位置で、可動接点は、固定接点と接触する。開位置で、可動接点は、固定接点から開離する。可動接触片は、第１収納室内に配置される。可動接触片には、可動接点が接続される。可動軸は、第１収納室から第２収納室に向かって延び、可動接触片に接続される。可動鉄心は、第２収納室内において可動軸に接続される。可動鉄心は、第１収納室から第２収納室に向かう方向に移動することで、可動接点を開位置から閉位置に移動させる。可動鉄心は、第２収納室から第１収納室に向かう方向に移動することで、可動接点を閉位置から開位置に移動させる。コイルは、可動鉄心を移動させる磁力を発生させる。連通路には、可動軸が挿入される。連通路は、第１収納室と第２収納室とを連通させる。連通路は、第１収納室側に配置された第１通路と、第２収納室側に配置された第２通路とを含む。第２通路と可動軸との間の第２の間隙は、第１通路と可動軸との間の第１の間隙よりも大きい。 The relay according to one aspect includes a housing, a fixed contact, a movable contact, a movable contact piece, a movable shaft, a movable iron core, a coil, and a communication path. The housing includes a first storage chamber and separates the first storage chamber from the second storage chamber outside the first storage chamber. The fixed contact is arranged in the first storage chamber. The movable contact is arranged in the first storage chamber. The movable contact is provided so as to be movable between a closed position and an open position. In the closed position, the movable contact contacts the fixed contact. In the open position, the movable contact separates from the fixed contact. The movable contact piece is arranged in the first storage chamber. A movable contact is connected to the movable contact piece. The movable shaft extends from the first storage chamber toward the second storage chamber and is connected to the movable contact piece. The movable iron core is connected to the movable shaft in the second storage chamber. The movable core moves the movable contact from the open position to the closed position by moving in the direction from the first storage chamber to the second storage chamber. The movable core moves the movable contact from the closed position to the open position by moving in the direction from the second storage chamber to the first storage chamber. The coil generates a magnetic force that moves the movable iron core. A movable shaft is inserted in the communication passage. The communication passage connects the first storage chamber and the second storage chamber. The communication passage includes a first passage arranged on the first storage chamber side and a second passage arranged on the second storage chamber side. The second gap between the second passage and the movable shaft is larger than the first gap between the first passage and the movable shaft.
　本態様に係るリレーでは、第２通路と可動軸との間の第２の間隙は、第１通路と可動軸との間の第１の間隙よりも大きい。そのため、第１収納室での圧力上昇によって第１収納室から第２収納室へ流れる空気は、第１通路から第２通路に流入する際に、減速される。従って、空気が可動鉄片を押す力が弱まることで、可動接点が、固定接点側に戻ってしまうことが抑えられる。その結果、復帰バウンスの発生を抑えることができる。 In the relay according to this aspect, the second gap between the second passage and the movable shaft is larger than the first gap between the first passage and the movable shaft. Therefore, the air flowing from the first storage chamber to the second storage chamber due to the pressure increase in the first storage chamber is decelerated when flowing into the second passage from the first passage. Therefore, it is possible to prevent the movable contact from returning to the fixed contact side due to the weakening of the force with which the air pushes the movable iron piece. As a result, the occurrence of return bounce can be suppressed.
　連通路は、規制部をさらに含んでもよい。規制部は、可動鉄心と接触することで、可動鉄心の第１収納室側への移動を規制してもよい。第２通路は、規制部よりも第１収納室側に位置してもよい。この場合、接点の復帰時に、可動鉄心は、規制部に接触することで、第１収納室側への移動が規制される。 The communication passage may further include a regulation unit. The restriction portion may restrict the movement of the movable core toward the first storage chamber by contacting the movable core. The second passage may be located closer to the first storage chamber than the regulation section. In this case, when the contact is restored, the movable iron core comes into contact with the restricting portion to restrict the movement of the movable iron core to the first storage chamber side.
　リレーは、ガイドをさらに備えてもよい。ガイドは、連通路から、固定接点又は可動接点に向かって延びていてもよい。この場合、可動鉄心が第２収納室から第１収納室に向かう方向に移動するときに、第２収納室から連通路を介して第１収納室に流れる空気が、ガイドによって固定接点又は可動接点に向かって案内される。それにより、固定接点又は可動接点を冷却することができる。 The relay may further include a guide. The guide may extend from the communication passage toward the fixed contact or the movable contact. In this case, when the movable iron core moves in the direction from the second storage chamber to the first storage chamber, the air flowing from the second storage chamber to the first storage chamber through the communication passage causes the fixed contact or the movable contact by the guide. Will be guided towards. Thereby, the fixed contact or the movable contact can be cooled.
　ガイドは、可動接触片に沿って配置されてもよい。この場合、ガイドと可動接触片とによって、空気を固定接点又は可動接点に向かって案内することができる。それにより、固定接点又は可動接点を、より効果的に冷却することができる。 The guide may be arranged along the movable contact piece. In this case, air can be guided toward the fixed contact or the movable contact by the guide and the movable contact piece. Thereby, the fixed contact or the movable contact can be cooled more effectively.
　ガイドは、壁を含んでもよい。壁は、可動接触片に向かって突出し、固定接点又は可動接点に向かって延びていてもよい。この場合、壁によって、空気を固定接点又は可動接点に向かって案内することができる。それにより、固定接点又は可動接点を、より効果的に冷却することができる。 The guide may include walls. The wall may project toward the movable contact piece and extend toward the fixed contact or the movable contact. In this case, the walls can guide the air towards the fixed or movable contacts. Thereby, the fixed contact or the movable contact can be cooled more effectively.
　ガイドは、溝を含んでもよい。溝は、可動接触片から離れる方向に向かって凹んでおり、固定接点又は可動接点に向かって延びていてもよい。この場合、溝によって、空気を固定接点又は可動接点に向かって案内することができる。それにより、固定接点又は可動接点を、より効果的に冷却することができる。 The guide may include a groove. The groove may be recessed in a direction away from the movable contact piece, and may extend toward the fixed contact or the movable contact. In this case, the groove allows the air to be guided towards the fixed or movable contact. Thereby, the fixed contact or the movable contact can be cooled more effectively.
　本発明によれば、リレーにおいて復帰バウンスの発生を抑えることができる。 According to the present invention, it is possible to suppress the occurrence of return bounce in the relay.
可動接点が開位置での実施形態に係るリレーの側面断面図である。It is a side sectional view of a relay concerning an embodiment in which a movable contact is in an open position. 可動接点が閉位置でのリレーの側面断面図である。It is a side surface sectional view of a relay in which a movable contact is in a closed position. 可動接点が閉位置での連通路及びその周囲の拡大図である。FIG. 6 is an enlarged view of a communication path and its surroundings when a movable contact is in a closed position. 可動接点が開位置での連通路及びその周囲の拡大図である。FIG. 6 is an enlarged view of a communication path and its surroundings when a movable contact is in an open position. 第１変形例に係るリレーの拡大図である。It is an enlarged view of a relay concerning the 1st modification. 第２変形例に係るリレーの拡大図である。It is an enlarged view of a relay concerning the 2nd modification. 第２変形例に係るリレーのガイドの斜視図である。It is a perspective view of the guide of the relay which concerns on a 2nd modification. 第３変形例に係るリレーの拡大図である。It is an enlarged view of a relay concerning the 3rd modification.
　以下、図面を参照して実施形態に係るリレー１について説明する。図１は実施形態に係るリレー１を示す側面断面図である。図１に示すように、リレー１は、接点装置２と、ハウジング３と、駆動装置４とを備える。なお、以下の説明において、上下左右の各方向は、図１における上下左右の各方向を意味するものとする。詳細には、駆動装置４から接点装置２に向かう方向を上方と定義する。また、接点装置２から駆動装置４に向かう方向を下方と定義する。図１において、上下方向に交差する方向を左右方向と定義する。また、上下方向及び左右方向に交差する方向を前後方向と定義する。前後方向は、図１の紙面に垂直な方向である。ただし、これらの方向は、説明の便宜上、定義されるものであって、リレー１の配置方向を限定するものではない。 Hereinafter, the relay 1 according to the embodiment will be described with reference to the drawings. FIG. 1 is a side sectional view showing a relay 1 according to the embodiment. As shown in FIG. 1, the relay 1 includes a contact device 2, a housing 3, and a drive device 4. In the following description, the up, down, left, and right directions mean the up, down, left, and right directions in FIG. Specifically, the direction from the drive device 4 to the contact device 2 is defined as the upper side. Further, the direction from the contact device 2 to the drive device 4 is defined as downward. In FIG. 1, the direction intersecting with the vertical direction is defined as the horizontal direction. Further, a direction intersecting the vertical direction and the horizontal direction is defined as the front-back direction. The front-back direction is a direction perpendicular to the paper surface of FIG. However, these directions are defined for convenience of description, and do not limit the arrangement direction of the relay 1.
　接点装置２は、第１固定端子１１と、第２固定端子１２と、可動接触片１３と、第１可動接点１６と、第２可動接点１７とを含む。第１固定端子１１と第２固定端子１２とは、例えば銅などの導電性を有する材料で形成されている。第１固定端子１１には、第１固定接点１４が設けられている。第２固定端子１２には、第２固定接点１５が設けられている。第１固定接点１４と第２固定接点１５とは、左右方向に離れて配置されている。 The contact device 2 includes a first fixed terminal 11, a second fixed terminal 12, a movable contact piece 13, a first movable contact 16, and a second movable contact 17. The first fixed terminal 11 and the second fixed terminal 12 are made of a conductive material such as copper. A first fixed contact 14 is provided on the first fixed terminal 11. A second fixed contact 15 is provided on the second fixed terminal 12. The first fixed contact 14 and the second fixed contact 15 are arranged apart from each other in the left-right direction.
　第１固定端子１１は、第１接点支持部２１と第１外部端子部２２とを含む。第１固定接点１４は、第１接点支持部２１に接続されている。第１外部端子部２２は、第１接点支持部２１に接続されている。第１外部端子部２２は、ハウジング３から外方に突出している。第２固定端子１２は、第２接点支持部２３と第２外部端子部２４とを含む。第２固定接点１５は、第２接点支持部２３に接続されている。第２外部端子部２４は、第２接点支持部２３に接続されている。第２外部端子部２４は、ハウジング３から外方に突出している。 The first fixed terminal 11 includes a first contact support portion 21 and a first external terminal portion 22. The first fixed contact 14 is connected to the first contact support portion 21. The first external terminal portion 22 is connected to the first contact support portion 21. The first external terminal portion 22 projects outward from the housing 3. The second fixed terminal 12 includes a second contact support portion 23 and a second external terminal portion 24. The second fixed contact 15 is connected to the second contact support portion 23. The second external terminal portion 24 is connected to the second contact support portion 23. The second external terminal portion 24 projects outward from the housing 3.
　なお、図１では、第１外部端子部２２と第２外部端子部２４とは、ハウジング３から上方に突出している。しかし、第１外部端子部２２と第２外部端子部２４とは、上方に限らず、左右方向、或いは前後方向など他の方向にハウジング３から突出してもよい。 Note that, in FIG. 1, the first external terminal portion 22 and the second external terminal portion 24 project upward from the housing 3. However, the first external terminal portion 22 and the second external terminal portion 24 may project from the housing 3 not only in the upper direction but also in other directions such as the left-right direction or the front-back direction.
　可動接触片１３は、例えば銅などの導電性を有する材料で形成されている。可動接触片１３は、左右方向に延びている。本実施形態において、可動接触片１３の長手方向は、左右方向に一致する。可動接触片１３は、上下方向において、第１固定端子１１及び第２固定端子１２に対向して配置されている。 The movable contact piece 13 is made of a conductive material such as copper. The movable contact piece 13 extends in the left-right direction. In this embodiment, the longitudinal direction of the movable contact piece 13 corresponds to the left-right direction. The movable contact piece 13 is arranged so as to face the first fixed terminal 11 and the second fixed terminal 12 in the vertical direction.
　可動接触片１３は、接触方向Ｚ１と開離方向Ｚ２とに移動可能に配置されている。接触方向Ｚ１は、可動接触片１３が第１固定端子１１及び第２固定端子１２に近接する方向（図１における下方）である。開離方向Ｚ２は、可動接触片１３が第１固定端子１１及び第２固定端子１２から開離する方向（図１における上方）である。 The movable contact piece 13 is arranged so as to be movable in the contact direction Z1 and the opening direction Z2. The contact direction Z1 is a direction in which the movable contact piece 13 approaches the first fixed terminal 11 and the second fixed terminal 12 (downward in FIG. 1). The separation direction Z2 is a direction in which the movable contact piece 13 separates from the first fixed terminal 11 and the second fixed terminal 12 (upward in FIG. 1).
　第１可動接点１６と第２可動接点１７とは、可動接触片１３に支持されている。第１可動接点１６と第２可動接点１７とは、左右方向に離れて配置されている。第１可動接点１６は、上下方向において第１固定接点１４に対向している。第１可動接点１６は、第１固定接点１４の上方に配置されている。第２可動接点１７は、上下方向において第２固定接点１５に対向している。第２可動接点１７は、第２固定接点１５の上方に配置されている。 The first movable contact 16 and the second movable contact 17 are supported by the movable contact piece 13. The first movable contact 16 and the second movable contact 17 are arranged apart from each other in the left-right direction. The first movable contact 16 faces the first fixed contact 14 in the vertical direction. The first movable contact 16 is arranged above the first fixed contact 14. The second movable contact 17 faces the second fixed contact 15 in the vertical direction. The second movable contact 17 is arranged above the second fixed contact 15.
　接点装置２は、可動軸１９と接点バネ２７とを含む。可動軸１９は、上下方向に延びている。可動軸１９は、可動接触片１３に接続されている。可動軸１９は、可動接触片１３から下方に延びている。接点バネ２７は、可動接点１６，１７が固定接点１４，１５に接触している状態で、可動接触片１３を接触方向Ｚ１に付勢する。 The contact device 2 includes a movable shaft 19 and a contact spring 27. The movable shaft 19 extends in the vertical direction. The movable shaft 19 is connected to the movable contact piece 13. The movable shaft 19 extends downward from the movable contact piece 13. The contact spring 27 biases the movable contact piece 13 in the contact direction Z1 while the movable contacts 16 and 17 are in contact with the fixed contacts 14 and 15.
　ハウジング３は、接点装置２を収容している。ハウジング３は、第１収納室Ｓ１を含む。固定接点１４，１５と、可動接触片１３と、可動接点１６，１７とは、第１収納室Ｓ１内に配置されている。駆動装置４は、第１収納室Ｓ１の外部に配置されている。 The housing 3 houses the contact device 2. The housing 3 includes a first storage chamber S1. The fixed contacts 14 and 15, the movable contact piece 13, and the movable contacts 16 and 17 are arranged in the first storage chamber S1. The drive device 4 is arranged outside the first storage chamber S1.
　駆動装置４は、電磁力によって可動接触片１３を動作させる。駆動装置４は、接触方向Ｚ１及び開離方向Ｚ２に可動接触片１３を移動させる。駆動装置４は、ハウジング３の下方に配置されている。駆動装置４は、スプール３０と、可動鉄心３１と、コイル３２と、固定鉄心３３と、ヨーク３４と、復帰バネ３５とを含む。 The drive device 4 operates the movable contact piece 13 by electromagnetic force. The drive device 4 moves the movable contact piece 13 in the contact direction Z1 and the opening direction Z2. The drive device 4 is arranged below the housing 3. The drive device 4 includes a spool 30, a movable iron core 31, a coil 32, a fixed iron core 33, a yoke 34, and a return spring 35.
　スプール３０は、上下方向にスプール３０を貫通する孔３０１を含む。孔３０１は、可動鉄心３１が配置される第２収納室Ｓ２を構成する。ただし、第２収納室Ｓ２は、スプール３０以外の部分に設けられてもよい。可動鉄心３１は、固定鉄心３３と別体である。可動軸１９は、第１収納室Ｓ１から第２収納室Ｓ２に向かって延びている。可動鉄心３１は、第２収納室Ｓ２内において可動軸１９に接続されている。可動鉄心３１は、接触方向Ｚ１及び開離方向Ｚ２に移動可能に設けられている。接触方向Ｚ１は、第１収納室Ｓ１から第２収納室Ｓ２に向かう方向である。開離方向Ｚ２は、第２収納室Ｓ２から第１収納室Ｓ１に向かう方向である。コイル３２は、スプール３０に巻回されている。コイル３２は、通電されることで可動鉄心３１を接触方向Ｚ１に移動させる電磁力を発生させる。 The spool 30 includes a hole 301 that extends vertically through the spool 30. The hole 301 constitutes the second storage chamber S2 in which the movable iron core 31 is arranged. However, the second storage chamber S2 may be provided in a portion other than the spool 30. The movable iron core 31 is a separate body from the fixed iron core 33. The movable shaft 19 extends from the first storage chamber S1 toward the second storage chamber S2. The movable iron core 31 is connected to the movable shaft 19 in the second storage chamber S2. The movable iron core 31 is provided so as to be movable in the contact direction Z1 and the opening direction Z2. The contact direction Z1 is a direction from the first storage chamber S1 toward the second storage chamber S2. The opening direction Z2 is a direction from the second storage chamber S2 to the first storage chamber S1. The coil 32 is wound around the spool 30. The coil 32 is energized to generate an electromagnetic force that moves the movable iron core 31 in the contact direction Z1.
　固定鉄心３３は、第２収納室Ｓ２内に配置されている。固定鉄心３３は、可動鉄心３１に対向して配置されている。復帰バネ３５は、可動鉄心３１と固定鉄心３３との間に配置されている。復帰バネ３５は、可動鉄心３１を開離方向Ｚ２に付勢している。 The fixed iron core 33 is arranged in the second storage chamber S2. The fixed iron core 33 is arranged to face the movable iron core 31. The return spring 35 is arranged between the movable iron core 31 and the fixed iron core 33. The return spring 35 biases the movable iron core 31 in the opening direction Z2.
　ヨーク３４は、コイル３２を囲むように配置されている。ヨーク３４は、コイル３２によって構成される磁気回路上に配置されている。ヨーク３４は、コイル３２の上方と、コイル３２の側方と、コイル３２の下方とに配置されている。また、ヨーク３４の一部３４１は、第２収納室Ｓ２に配置されている。ヨーク３４の一部３４１は、可動鉄心３１の周囲に配置されている。 The yoke 34 is arranged so as to surround the coil 32. The yoke 34 is arranged on the magnetic circuit formed by the coil 32. The yoke 34 is arranged above the coil 32, on the side of the coil 32, and below the coil 32. Further, a part 341 of the yoke 34 is arranged in the second storage chamber S2. A part 341 of the yoke 34 is arranged around the movable iron core 31.
　次に、リレー１の動作について説明する。コイル３２に通電されていないときには、駆動装置４は励磁されていない。この場合、可動軸１９は、可動鉄心３１と共に、復帰バネ３５の弾性力によって開離方向Ｚ２に押圧されている。そのため、可動接触片１３も開離方向Ｚ２に押圧されており、可動接点１６，１７は、図１に示す開位置に位置している。可動接点１６，１７が開位置に位置している状態では、第１可動接点１６及び第２可動接点１７は、第１固定接点１４及び第２固定接点１５から開離している。 Next, the operation of relay 1 will be described. When the coil 32 is not energized, the drive device 4 is not excited. In this case, the movable shaft 19 is pressed in the opening direction Z2 by the elastic force of the return spring 35 together with the movable iron core 31. Therefore, the movable contact piece 13 is also pressed in the opening direction Z2, and the movable contacts 16 and 17 are located at the open position shown in FIG. In the state where the movable contacts 16 and 17 are located at the open position, the first movable contact 16 and the second movable contact 17 are separated from the first fixed contact 14 and the second fixed contact 15.
　コイル３２に通電されると、駆動装置４が励磁される。この場合、コイル３２の電磁力により、可動鉄心３１が、復帰バネ３５の弾性力に抗して、接触方向Ｚ１に移動する。それにより、可動軸１９と可動接触片１３とが共に接触方向Ｚ１に移動して、可動接点１６，１７は図２に示す閉位置へ移動する。可動接点１６，１７が閉位置に位置している状態では、第１可動接点１６及び第２可動接点１７は、第１固定接点１４及び第２固定接点１５にそれぞれ接触している。 When the coil 32 is energized, the drive device 4 is excited. In this case, the electromagnetic force of the coil 32 causes the movable iron core 31 to move in the contact direction Z1 against the elastic force of the return spring 35. As a result, both the movable shaft 19 and the movable contact piece 13 move in the contact direction Z1, and the movable contacts 16 and 17 move to the closed position shown in FIG. When the movable contacts 16 and 17 are in the closed position, the first movable contact 16 and the second movable contact 17 are in contact with the first fixed contact 14 and the second fixed contact 15, respectively.
　コイル３２への電流が停止され消磁されると、可動鉄心３１は、復帰バネ３５の弾性力によって開離方向Ｚ２に押圧される。それにより、可動軸１９と可動接触片１３とが共に開離方向Ｚ２に移動して、可動接点１６，１７は図１に示す開位置へ戻る。 When the current to the coil 32 is stopped and demagnetized, the movable core 31 is pressed in the opening direction Z2 by the elastic force of the return spring 35. As a result, both the movable shaft 19 and the movable contact piece 13 move in the opening direction Z2, and the movable contacts 16 and 17 return to the open position shown in FIG.
　上述したハウジング３は、隔壁４０を含む。隔壁４０は、接点装置２と駆動装置４との間に配置されている。隔壁４０は、接点装置２の下方に配置されている。隔壁４０は、駆動装置４の上方に配置されている。第１収納室Ｓ１と第２収納室Ｓ２とは、隔壁４０によって区画されている。隔壁４０には、連通路４１が設けられている。連通路４１は、第１収納室Ｓ１と第２収納室Ｓ２とを連通させる。連通路４１には、可動軸１９が挿入される。 The housing 3 described above includes a partition wall 40. The partition wall 40 is arranged between the contact device 2 and the drive device 4. The partition wall 40 is arranged below the contact device 2. The partition wall 40 is disposed above the drive device 4. The first storage chamber S1 and the second storage chamber S2 are partitioned by a partition wall 40. A communication path 41 is provided in the partition wall 40. The communication passage 41 connects the first storage chamber S1 and the second storage chamber S2. The movable shaft 19 is inserted into the communication passage 41.
　図３は、可動接点１６，１７が閉位置での連通路４１及びその周囲の拡大図である。図４は、可動接点１６，１７が開位置での連通路４１及びその周囲の拡大図である。図３及び図４に示すように、連通路４１は、第１収納室Ｓ１側に配置された第１通路４２と、第２収納室Ｓ２側に配置された第２通路４３とを含む。第１通路４２は、第１収納室Ｓ１に向かって開口している。第２通路４３は、第２収納室Ｓ２に向かって開口している。 FIG. 3 is an enlarged view of the communication passage 41 and its surroundings when the movable contacts 16 and 17 are in the closed position. FIG. 4 is an enlarged view of the communication passage 41 and its surroundings when the movable contacts 16 and 17 are in the open position. As shown in FIGS. 3 and 4, the communication passage 41 includes a first passage 42 arranged on the first storage chamber S1 side and a second passage 43 arranged on the second storage chamber S2 side. The first passage 42 opens toward the first storage chamber S1. The second passage 43 opens toward the second storage chamber S2.
　第２通路４３は、可動鉄心３１の外形よりも小さい。第２通路４３は、第１通路４２よりも大きい。すなわち、第２通路４３の開口面積は、第１通路４２の開口面積よりも大きい。第２通路４３の開口面積は、上下方向への第２通路４３の投影面積を意味する。第１通路４２の開口面積は、上下方向への第１通路４２の投影面積を意味する。第２通路４３と可動軸１９との間の第２の間隙Ｇ２は、第１通路４２と可動軸１９との間の第１の間隙Ｇ１よりも大きい。第１通路４２と第２通路４３との間には、段部４４が設けられている。ただし、段部４４に代えてテーパ部が設けられてもよい。テーパ部は、第１通路４２側から第２通路４３側に向かって拡大するように設けられてもよい。 The second passage 43 is smaller than the outer shape of the movable iron core 31. The second passage 43 is larger than the first passage 42. That is, the opening area of the second passage 43 is larger than the opening area of the first passage 42. The opening area of the second passage 43 means the projected area of the second passage 43 in the vertical direction. The opening area of the first passage 42 means the projected area of the first passage 42 in the vertical direction. The second gap G2 between the second passage 43 and the movable shaft 19 is larger than the first gap G1 between the first passage 42 and the movable shaft 19. A step portion 44 is provided between the first passage 42 and the second passage 43. However, a taper portion may be provided instead of the step portion 44. The tapered portion may be provided so as to expand from the first passage 42 side toward the second passage 43 side.
　連通路４１は、規制部４５を含む。図４に示すように、規制部４５は、可動鉄心３１と接触することで、可動鉄心３１の第１収納室Ｓ１側への移動を規制する。可動接点１６，１７が開位置で、可動鉄心３１は、規制部４５に接触している。第２通路４３は、規制部４５よりも第１収納室Ｓ１側に位置する。第２通路４３は、規制部４５から第１収納室Ｓ１側に凹んだ形状を有している。 The communication passage 41 includes a regulation unit 45. As shown in FIG. 4, the restricting portion 45 restricts the movement of the movable iron core 31 toward the first storage chamber S1 by coming into contact with the movable iron core 31. When the movable contacts 16 and 17 are in the open position, the movable iron core 31 is in contact with the restriction portion 45. The second passage 43 is located closer to the first storage chamber S1 than the regulating portion 45. The second passage 43 has a shape recessed from the restriction portion 45 toward the first storage chamber S1.
　以上説明した本実施形態に係るリレー１では、第２通路４３と可動軸１９との間の第２の間隙Ｇ２は、第１通路４２と可動軸１９との間の第１の間隙Ｇ１よりも大きい。そのため、第１収納室Ｓ１での圧力上昇によって第１収納室Ｓ１から第２収納室Ｓ２へ流れる空気は、第１通路４２から第２通路４３に流入する際に、減速される。従って、空気が可動鉄片３１を押す力が弱まることで、可動接点１６，１７が、固定接点１４，１５側に戻ってしまうことが抑えられる。その結果、復帰バウンスの発生を抑えることができる。 In the relay 1 according to the present embodiment described above, the second gap G2 between the second passage 43 and the movable shaft 19 is larger than the first gap G1 between the first passage 42 and the movable shaft 19. large. Therefore, the air flowing from the first storage chamber S1 to the second storage chamber S2 due to the pressure increase in the first storage chamber S1 is decelerated when flowing into the second passage 43 from the first passage 42. Therefore, it is possible to prevent the movable contacts 16 and 17 from returning to the fixed contacts 14 and 15 side due to the weakening of the force of the air pushing the movable iron piece 31. As a result, the occurrence of return bounce can be suppressed.
　また、可動鉄心３１の復帰動作時に、第２収納室Ｓ２から第１収納室Ｓ１に空気が流入するときには、連通路４１において空気の流速を増大させることができる。それにより、可動接触片１３の復帰動作を早くすることができる。そのため、接点間の絶縁のために必要な接点間隔を迅速に確保することができる。 Also, when air flows from the second storage chamber S2 into the first storage chamber S1 during the return operation of the movable iron core 31, the flow velocity of the air in the communication passage 41 can be increased. Thereby, the returning operation of the movable contact piece 13 can be accelerated. Therefore, the contact gap required for insulation between the contacts can be quickly secured.
　さらに、第２収納室Ｓ２から第１収納室Ｓ１に流入する空気の流速が増大することで、空気が接点に到達し易くなる。そのため、接点において発生したアークを冷却することができる。 Furthermore, since the flow velocity of the air flowing from the second storage chamber S2 into the first storage chamber S1 increases, the air easily reaches the contact. Therefore, the arc generated at the contact can be cooled.
　以上、本発明の一実施形態について説明したが、本発明は上記実施形態に限定されるものではなく、発明の要旨を逸脱しない範囲で種々の変更が可能である。 Although one embodiment of the present invention 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.
　第１固定端子１１、第２固定端子１２、可動接触片１３の形状、或いは配置が変更されてもよい。スプール３０、可動鉄心３１、コイル３２、固定鉄心３３、或いはヨーク３４の形状、或いは配置が変更されてもよい。第１固定接点１４、第２固定接点１５、第１可動接点１６、第１固定接点１４の形状、或いは配置が変更されてもよい。 The shape or arrangement of the first fixed terminal 11, the second fixed terminal 12, and the movable contact piece 13 may be changed. The shape or arrangement of the spool 30, the movable iron core 31, the coil 32, the fixed iron core 33, or the yoke 34 may be changed. The shape or arrangement of the first fixed contact 14, the second fixed contact 15, the first movable contact 16, and the first fixed contact 14 may be changed.
　第１固定接点１４は、第１固定端子１１と別体であってもよく、或いは一体であってもよい。第２固定接点１５は、第２固定端子１２と別体であってもよく、或いは一体であってもよい。第１可動接点１６は、可動接触片１３と別体であってもよく、或いは一体であってもよい。第２可動接点１７は、可動接触片１３と別体であってもよく、或いは一体であってもよい。 The first fixed contact 14 may be separate from the first fixed terminal 11 or may be integrated. The second fixed contact 15 may be separate from the second fixed terminal 12 or may be integrated with the second fixed terminal 12. The first movable contact 16 may be a separate body from the movable contact piece 13 or may be an integral body. The second movable contact 17 may be a separate body from the movable contact piece 13 or may be an integral body.
　連通路４１の形状、或いは配置は、上記の実施形態のものに限らず、変更されてもよい。図５は、リレー１の第１変形例を示す図である。図５に示すように、リレー１は、ガイド５１，５２をさらに備えてもよい。ガイド５１，５２は、可動接触片１３に沿って配置されてもよい。ガイド５１，５２は、可動接触片１３の下方において可動接触片１３と対向していてもよい。ガイド５１，５２は、第１ガイド５１と第２ガイド５２とを含んでもよい。第１ガイド５１は、左右方向において連通路４１から第１固定接点１４又は第１可動接点１６に向かって延びていてもよい。第２ガイド５２は、左右方向において連通路４１から第２固定接点１５又は第２可動接点１７に向かって延びていてもよい。 The shape or arrangement of the communication passage 41 is not limited to that of the above embodiment, and may be changed. FIG. 5 is a diagram showing a first modification of the relay 1. As shown in FIG. 5, the relay 1 may further include guides 51 and 52. The guides 51 and 52 may be arranged along the movable contact piece 13. The guides 51 and 52 may face the movable contact piece 13 below the movable contact piece 13. The guides 51 and 52 may include the first guide 51 and the second guide 52. The first guide 51 may extend from the communication passage 41 toward the first fixed contact 14 or the first movable contact 16 in the left-right direction. The second guide 52 may extend from the communication passage 41 toward the second fixed contact 15 or the second movable contact 17 in the left-right direction.
　第１変形例では、可動鉄心３１が第２収納室Ｓ２から第１収納室Ｓ１に向かう方向に移動するときに、第２収納室Ｓ２から連通路４１を介して第１収納室Ｓ１に流れる空気が、ガイド５１，５２によって固定接点１４，１５又は可動接点１６，１７に向かって案内される。それにより、固定接点１４，１５又は可動接点１６，１７を、より効果的に冷却することができる。 In the first modified example, when the movable iron core 31 moves in the direction from the second storage chamber S2 toward the first storage chamber S1, the air flowing from the second storage chamber S2 to the first storage chamber S1 via the communication passage 41. Are guided by the guides 51, 52 toward the fixed contacts 14, 15 or the movable contacts 16, 17. Thereby, the fixed contacts 14 and 15 or the movable contacts 16 and 17 can be cooled more effectively.
　図６及び図７は、リレー１の第２変形例を示す図である。図６及び図７に示すように、ガイド５１，５２は、壁５３，５４を含んでもよい。壁５３，５４は、可動接触片１３に向かって、すなわち上方に、突出していてもよい。壁５３，５４は、左右方向において固定接点１４，１５又は可動接点１６，１７に向かって延びていてもよい。壁５３，５４は、第１壁５３と第２壁５４とを含んでもよい。第１壁５３と第２壁５４とは、前後方向に互いに間隔をおいて配置されてもよい。第１壁５３と第２壁５４とは、それぞれ可動接触片１３に沿って、すなわち、左右方向に延びていてもよい。 6 and 7 are diagrams showing a second modification of the relay 1. As shown in FIGS. 6 and 7, the guides 51 and 52 may include walls 53 and 54. The walls 53 and 54 may project toward the movable contact piece 13, that is, upward. The walls 53, 54 may extend toward the fixed contacts 14, 15 or the movable contacts 16, 17 in the left-right direction. The walls 53 and 54 may include a first wall 53 and a second wall 54. The first wall 53 and the second wall 54 may be arranged at intervals in the front-rear direction. The first wall 53 and the second wall 54 may extend along the movable contact piece 13, that is, in the left-right direction.
　また、ガイド５１，５２は、溝５５，５６を含んでもよい。溝５５，５６は、可動接触片１３から離れる方向、すなわち下方に向かって凹んでいてもよい。溝５５，５６は、第１溝５５と第２溝５６とを含んでもよい。第１溝５５は、左右方向において第１固定接点１４又は第１可動接点１６に向かって延びていてもよい。第２溝５６は、左右方向において第２固定接点１５又は第２可動接点１７に向かって延びていてもよい。 The guides 51, 52 may also include grooves 55, 56. The grooves 55 and 56 may be recessed in a direction away from the movable contact piece 13, that is, downward. The grooves 55 and 56 may include the first groove 55 and the second groove 56. The first groove 55 may extend toward the first fixed contact 14 or the first movable contact 16 in the left-right direction. The second groove 56 may extend toward the second fixed contact 15 or the second movable contact 17 in the left-right direction.
　第２変形例では、壁５３，５４及び溝５５，５６によって、空気を固定接点１４，１５又は可動接点１６，１７に向かって案内することができる。それにより、固定接点１４，１５又は可動接点１６，１７を、より効果的に冷却することができる。なお、ガイド５１，５２は、壁５３，５４と溝５５，５６との両方に限らず、一方のみを含んでもよい。すなわち、ガイド５１，５２は、壁５３，５４のみを含んでもよい。或いは、ガイド５１，５２は、溝５５，５６のみを含んでもよい。 In the second modified example, the air can be guided toward the fixed contacts 14 and 15 or the movable contacts 16 and 17 by the walls 53 and 54 and the grooves 55 and 56. Thereby, the fixed contacts 14 and 15 or the movable contacts 16 and 17 can be cooled more effectively. The guides 51 and 52 are not limited to both the walls 53 and 54 and the grooves 55 and 56, and may include only one. That is, the guides 51 and 52 may include only the walls 53 and 54. Alternatively, the guides 51, 52 may include only the grooves 55, 56.
　図８は、リレー１の第３変形例を示す図である。図８に示すように、連通路４１と可動鉄芯３１との間に、緩衝部材４６が配置されてもよい。連通路４１は、緩衝部材４６を介して、可動鉄心３１と接触してもよい。緩衝部材４６は、例えばゴムなどの弾性部材製であってもよい。また、緩衝部材４６と可動鉄芯３１との間、及び／又は、緩衝部材４６と規制部材４６との間に、スペーサが配置されてもよい。 FIG. 8 is a diagram showing a third modification of the relay 1. As shown in FIG. 8, a buffer member 46 may be arranged between the communication passage 41 and the movable iron core 31. The communication passage 41 may be in contact with the movable iron core 31 via the cushioning member 46. The cushioning member 46 may be made of an elastic member such as rubber. Further, a spacer may be arranged between the buffer member 46 and the movable iron core 31, and / or between the buffer member 46 and the restriction member 46.
　本発明によれば、リレーにおいて復帰バウンスの発生を抑えることができる。 According to the present invention, it is possible to suppress the occurrence of return bounce in the relay.
３　　　　　ハウジング
１３　　　　可動接触片
１４，１５　固定接点
１６，１７　可動接点
１９　　　　可動軸
３１　　　　可動鉄心
３２　　　　コイル
４１　　　　連通路
４２　　　　第１通路
４３　　　　第２通路
４５　　　　規制部
５１，５２　ガイド
５３，５４　壁
５５，５６　溝
Ｓ１　　　　第１収納室
Ｓ２　　　　第２収納室 3 Housing 13 Movable Contact Pieces 14 and 15 Fixed Contacts 16 and 17 Movable Contact 19 Movable Shaft 31 Movable Iron Core 32 Coil 41 Communication Passage 42 First Passage 43 Second Passage 45 Regulators 51, 52 Guides 53, 54 Walls 55, 56 Grooves S1 First storage room S2 Second storage room

Claims (6)

  1. 　第１収納室を含み、前記第１収納室を前記第１収納室外の第２収納室から区画するハウジングと、
    　前記第１収納室内に配置された固定接点と、
    　前記第１収納室内に配置され、前記固定接点と接触する閉位置と、前記固定接点から開離した開位置とに移動可能に設けられる可動接点と、
    　前記第１収納室内に配置され、前記可動接点が接続された可動接触片と、
    　前記第１収納室から前記第２収納室に向かって延び、前記可動接触片に接続された可動軸と、
    　前記第２収納室内において前記可動軸に接続され、前記第１収納室から前記第２収納室に向かう方向に移動することで前記可動接点を前記開位置から前記閉位置に移動させ、前記第２収納室から前記第１収納室に向かう方向に移動することで前記可動接点を前記閉位置から前記開位置に移動させる可動鉄心と、
    　前記可動鉄心を移動させる磁力を発生させるコイルと、
    　前記可動軸が挿入され、前記第１収納室と前記第２収納室とを連通させる連通路と、
    を備え、
    　前記連通路は、前記第１収納室側に配置された第１通路と、前記第２収納室側に配置された第２通路とを含み、
    　前記第２通路と前記可動軸との間の第２の間隙は、前記第１通路と前記可動軸との間の第１の間隙よりも大きい、
    リレー。     A housing that includes a first storage chamber and partitions the first storage chamber from a second storage chamber outside the first storage chamber;
    A fixed contact disposed in the first storage chamber,
    A movable contact disposed in the first storage chamber and movably provided in a closed position in contact with the fixed contact and in an open position separated from the fixed contact;
    A movable contact piece arranged in the first storage chamber, to which the movable contact is connected,
    A movable shaft extending from the first storage chamber toward the second storage chamber and connected to the movable contact piece;
    The movable contact is moved from the open position to the closed position by being connected to the movable shaft in the second storage chamber and moving in a direction from the first storage chamber to the second storage chamber. A movable core that moves the movable contact from the closed position to the open position by moving in a direction from the storage chamber toward the first storage chamber;
    A coil that generates a magnetic force that moves the movable iron core;
    A communication path into which the movable shaft is inserted and which connects the first storage chamber and the second storage chamber;
    Equipped with
    The communication passage includes a first passage arranged on the first storage chamber side and a second passage arranged on the second storage chamber side,
    A second gap between the second passage and the movable shaft is larger than a first gap between the first passage and the movable shaft,
    relay.
  2. 　前記連通路は、前記可動鉄心と接触することで、前記可動鉄心の前記第１収納室側への移動を規制する規制部をさらに含み、
    　前記第２通路は、前記規制部よりも前記第１収納室側に位置する、
    請求項１に記載のリレー。     The communication passage further includes a restricting portion that restricts movement of the movable core toward the first storage chamber side by contacting the movable core,
    The second passage is located closer to the first storage chamber than the restriction portion is,
    The relay according to claim 1.
  3. 　前記連通路から前記固定接点又は前記可動接点に向かって延びるガイドをさらに備える、
    請求項１又は２に記載のリレー。     Further comprising a guide extending from the communication passage toward the fixed contact or the movable contact,
    The relay according to claim 1 or 2.
  4. 　前記ガイドは、前記可動接触片に沿って配置されている、
    請求項３に記載のリレー。     The guide is arranged along the movable contact piece,
    The relay according to claim 3.
  5. 　前記ガイドは、前記可動接触片に向かって突出し前記固定接点又は前記可動接点に向かって延びる壁を含む、
    請求項４に記載のリレー。     The guide includes a wall protruding toward the movable contact piece and extending toward the fixed contact or the movable contact.
    The relay according to claim 4.
  6. 　前記ガイドは、前記可動接触片から離れる方向に向かって凹んでおり前記固定接点又は前記可動接点に向かって延びる溝を含む、
    請求項４又は５に記載のリレー。     The guide includes a groove that is recessed in a direction away from the movable contact piece and extends toward the fixed contact or the movable contact.
    The relay according to claim 4 or 5.
PCT/JP2019/040796 2018-11-16 2019-10-17 Relay WO2020100511A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018215495A JP7163734B2 (en) 2018-11-16 2018-11-16 relay
JP2018-215495 2018-11-16

Publications (1)

Publication Number Publication Date
WO2020100511A1 true WO2020100511A1 (en) 2020-05-22

Family

ID=70731417

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/040796 WO2020100511A1 (en) 2018-11-16 2019-10-17 Relay

Country Status (2)

Country Link
JP (2) JP7163734B2 (en)
WO (1) WO2020100511A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS552069U (en) * 1978-06-21 1980-01-08
WO2006104080A1 (en) * 2005-03-28 2006-10-05 Matsushita Electric Works, Ltd. Contact device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4815270B1 (en) * 1968-04-24 1973-05-14
JPS4924965U (en) * 1972-06-07 1974-03-02
JPS5664648U (en) * 1979-10-23 1981-05-30
JPS6416043U (en) * 1987-07-20 1989-01-26
JP2006310250A (en) 2005-03-28 2006-11-09 Matsushita Electric Works Ltd Contact device
JP4807430B2 (en) * 2009-03-30 2011-11-02 富士電機機器制御株式会社 Magnetic contactor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS552069U (en) * 1978-06-21 1980-01-08
WO2006104080A1 (en) * 2005-03-28 2006-10-05 Matsushita Electric Works, Ltd. Contact device

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JP2022185119A (en) 2022-12-13
JP2020087538A (en) 2020-06-04
JP7396426B2 (en) 2023-12-12
JP7163734B2 (en) 2022-11-01

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