WO2019021673A1 - 開閉器 - Google Patents
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- Publication number
- WO2019021673A1 WO2019021673A1 PCT/JP2018/022884 JP2018022884W WO2019021673A1 WO 2019021673 A1 WO2019021673 A1 WO 2019021673A1 JP 2018022884 W JP2018022884 W JP 2018022884W WO 2019021673 A1 WO2019021673 A1 WO 2019021673A1
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- WIPO (PCT)
- Prior art keywords
- movable contact
- yoke
- fixed contact
- contact
- inner yoke
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
- H01H2001/545—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force having permanent magnets directly associated with the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H50/38—Part of main magnetic circuit shaped to suppress arcing between the contacts of the relay
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
Definitions
- the present invention relates to a switch.
- Patent Document 1 Japanese Utility Model Application Laid-Open No. 1-109155
- Patent Document 2 International Publication No. 2012/128080
- Patent Document 3 Japanese Patent Application Laid-Open No. 2003-197053
- the DC switch described in Patent Document 1 includes a fixed contact having a fixed contact, a movable contact having a movable contact, a cross bar, a pole plate, and a permanent magnet.
- a magnetic field component in a direction perpendicular to the extending direction of the movable contact is generated between the fixed contact and the movable contact by the permanent magnet and the pole plate.
- the magnetic field component causes the arc generated between the fixed contact and the movable contact to be stretched outward in the extending direction of the movable contact and extinguished.
- the contact device described in Patent Document 2 includes a fixed contact having a fixed contact, a movable contact having a movable contact, and a pair of permanent magnets sandwiching a pair of fixed contacts.
- a fixed contact having a fixed contact
- a movable contact having a movable contact
- a pair of permanent magnets sandwiching a pair of fixed contacts.
- the switch described in Patent Document 3 includes a fixed contact having a fixed contact, a movable contact having a movable contact, an operation member connected to the movable contact to separate the contacts, and a magnetic field in the vicinity of the contacts It comprises magnetic field generating means to be generated and a magnetic force line induction member.
- the magnetism generating means generates a magnetic field between the fixed contact and the movable contact in a direction along the extending direction of the movable contact.
- the magnetic force line induction members are disposed symmetrically along the outer wall of the arc-extinguishing chamber case so as to be along the magnetic force lines passing through the first contact and the second contact. Therefore, there is room for the driving force to more effectively act on the arc.
- the present invention has been made in view of the above problems, and has an object to provide a switch with high arc-extinguishing performance by causing a driving force to effectively act on an arc.
- the switch based on the present invention comprises a first fixed contact, a second fixed contact, a movable contact, a drive shaft, a first outer yoke, a second outer yoke, a first inner yoke, 2 comprising an inner yoke and a permanent magnet.
- the first fixed contact has a first fixed contact.
- the second fixed contacts are arranged symmetrically in a line with a gap in the first fixed contacts.
- the second fixed contact has a second fixed contact.
- the movable contact is disposed on the side of the first fixed contact and the second fixed contact.
- the movable contact has a first movable contact provided at a position facing the first fixed contact at one end and a second movable contact provided at a position facing the second fixed contact at the other end.
- the drive shaft is composed of an insulator.
- the drive shaft is disposed to pass through the gap.
- the drive shaft moves the movable contact laterally.
- the first outer yoke is made of a magnetic material.
- the first outer yoke is partially located outside the one end of the movable contact in the direction in which the first fixed contact and the second fixed contact are aligned.
- the second outer yoke is made of a magnetic material.
- the second outer yoke is partially located at a position outside the other end of the movable contact in the above-described direction.
- the first inner yoke is made of a magnetic material.
- the first inner yoke is partially located at a position between the first fixed contact and the drive shaft.
- the second inner yoke is made of a magnetic material.
- the second inner yoke is partially located at a position between the second fixed contact and the drive shaft.
- the permanent magnet is connected to each of the first outer yoke and the second outer yoke.
- the permanent magnet magnetically couples the first outer yoke, the second outer yoke, the first inner yoke and the second inner yoke, and the first fixed contact and the first movable contact, and the second fixed contact
- a magnetic field component in the direction of alignment is generated between each of the second movable contact and the second movable contact.
- FIG. 4 is a cross-sectional view as viewed in the direction of the arrows in FIG. It is the figure which looked at the external appearance of the member which comprises the inner yoke of the switch which concerns on Embodiment 1 of this invention from the side side. It is the figure which looked at the member which comprises the inner yoke of FIG. 5 from the arrow VI direction.
- FIG. 8 is a cross-sectional view as viewed in the direction of arrows of line VIII-VIII in FIG. 7; The partial enlarged view which shows typically the driving force which acts on the arc which generate
- the partial enlarged view which shows typically the driving force which acts on the arc which generate
- FIG. 15 is a cross-sectional view of FIG. 14 as viewed in the direction of arrows XV-XV. It is the figure which looked at the external appearance of the member which comprises the inner side yoke of the switch which concerns on Embodiment 3 of this invention from the side side.
- FIG. 17 is a view of members constituting the inner yoke of FIG. 16 as viewed in the direction of arrow XVII. It is the elements on larger scale which show typically the magnetic field distribution which generate
- FIG. 19 is a cross-sectional view as viewed in the direction of the arrows in FIG. 18 taken along line XIX-XIX.
- the partial enlarged view which shows typically the driving force which acts on the arc which generate
- the partial enlarged view which shows typically the driving force which acts on the arc which generate
- FIG. 23 is a cross-sectional view as viewed in the direction of the arrows in FIG. 22 taken along line XXIII-XXIII. It is the figure which looked at the external appearance of the member which comprises the inner yoke of the switch which concerns on Embodiment 4 of this invention from the side side. It is the figure which looked at the member which comprises the inner yoke of FIG. 24 from the arrow XXV direction. It is the elements on larger scale which saw the state which removed the arc cover from the switch which concerns on Embodiment 5 of this invention from the front side.
- FIG. 23 is a cross-sectional view as viewed in the direction of the arrows in FIG. 22 taken along line XXIII-XXIII. It is the figure which looked at the external appearance of the member which comprises the inner yoke of the switch which concerns on Embodiment 4 of this invention from the side side. It is the figure which looked at the member which comprises the inner yoke of FIG. 24 from the arrow XXV
- FIG. 27 is a cross-sectional view as viewed in the direction of the arrows in lines XXVII-XXVII of FIG. 26. It is the elements on larger scale which saw the state which removed the arc cover from the switch which concerns on Embodiment 6 of this invention from the front side.
- FIG. 29 is a cross-sectional view as seen in the direction of the arrows in FIG. 28 taken along line XXIX-XXIX. It is the elements on larger scale which saw the state which removed the arc cover from the switch which concerns on Embodiment 7 of this invention from the front side.
- FIG. 31 is a cross-sectional view of FIG. 30 as viewed in the direction of arrows along line XXXI-XXI.
- FIG. 33 is a cross-sectional view of FIG. 32 as viewed in the direction of the arrows of XXXIII-XXXIII. It is the elements on larger scale which saw the state which removed the arc cover from the switch which concerns on Embodiment 9 of this invention from the front side.
- FIG. 35 is a cross-sectional view of FIG. 34 as viewed in the direction of arrows along line XXXV-XXXV. It is the elements on larger scale which saw the state which removed the arc cover from the switch which concerns on Embodiment 10 of this invention from the front side.
- FIG. 37 is a cross-sectional view as viewed in the direction of the arrows in FIG. 36 taken along line XXXVII-XXXVII. It is the figure seen from the XXXVIII direction of FIG.
- FIG. 1 is a front view showing an appearance of a switch according to Embodiment 1 of the present invention.
- FIG. 2 is a cross-sectional view of the switch of FIG. 1 as viewed in the direction of arrows II-II.
- FIG. 3 is the elements on larger scale which looked at the state which removed the arc cover from the switch which concerns on Embodiment 1 of this invention from the front side.
- FIG. 4 is a cross-sectional view as viewed in the direction of the arrows in FIG.
- the switch 1 which concerns on Embodiment 1 of this invention is equipped with the arc-extinguishing chamber 2a of a 1st phase, and the arc-extinguishing chamber 2b of a 2nd phase.
- the first-phase arc extinguishing chamber 2a and the second-phase arc extinguishing chamber 2b have the same configuration.
- the switch 1 has a vertically symmetrical shape and a laterally symmetrical shape.
- the switch 1 should just have at least one arc-extinguishing chamber.
- the switch 1 As shown in FIGS. 2 to 4, the switch 1 according to the first embodiment of the present invention includes a first fixed contact 7 a, a second fixed contact 7 b, a movable contact 10, and a drive shaft 11.
- the switch 1 further includes a grid 13, an insulating plate 17 and an arc cover 12 c.
- the first fixed contact 7a has a first fixed contact 8a.
- the first fixed contact 7a has a substantially rectangular parallelepiped outer shape.
- the first fixed contact 7 a has a longitudinal direction, and a through hole is provided at one end in the longitudinal direction.
- the first fixed contact 8a is provided on one main surface of the first fixed contact 7a.
- the first fixed contact 8a is located at the other end of the first fixed contact 7a in the longitudinal direction.
- the second fixed contacts 7b are arranged symmetrically in a row with gaps in the first fixed contacts 7a, and have second fixed contacts 8b.
- the second fixed contact 7 b has a substantially rectangular parallelepiped outer shape.
- the second fixed contact 7 b has a longitudinal direction, and a through hole is provided at the other end in the longitudinal direction.
- the second fixed contact 8b is provided on one main surface of the second fixed contact 7b.
- the second fixed contact 8b is located at one end of the second fixed contact 7b in the longitudinal direction.
- the movable contact 10 extends in the extending direction along the direction in which the first fixed contact 8 a and the second fixed contact 8 b are aligned.
- the movable contact 10 is disposed on the side of the first fixed contact 8 a and the second fixed contact 8 b.
- the movable contact 10 has a substantially rectangular parallelepiped outer shape.
- the movable contact 10 has a longitudinal direction which is an extending direction.
- the movable contact 10 has a first movable contact 9a at one end in the extending direction and a second movable contact 9b at the other end in the extending direction.
- the first movable contact 9 a and the second movable contact 9 b are provided on the other main surface of the movable contact 10.
- the first fixed contact 8a and the first movable contact 9a face each other.
- the first movable contact 9a is provided so as to be capable of coming into and coming out of contact with the first fixed contact 8a.
- the second fixed contact 8b and the second movable contact 9b face each other.
- the second movable contact 9 b is provided so as to be capable of coming into and coming out of contact with the second fixed contact 8 b.
- the drive shaft 11 is made of an insulator.
- the drive shaft 11 is disposed to pass through a gap between the first fixed contact 7 a and the second fixed contact 7 b.
- the drive shaft 11 maintains the state in which the first fixed contact 8a and the first movable contact 9a face each other, and the state in which the second fixed contact 8b and the second movable contact 9b face each other.
- the movable contact 10 is moved in the axial direction perpendicular to the extending direction of the movable contact 10.
- the drive shaft 11 moves the movable contact 10 laterally.
- the drive shaft 11 has a hollow portion on the tip end side, and the contact pressure spring 18 is accommodated in the hollow portion.
- the drive shaft 11 is provided with a pair of holes 11 h through which the movable contact 10 is inserted. Each of the pair of holes 11 h extends along the axial direction of the drive shaft 11.
- the drive shaft 11 is formed of resin or plastic having an insulating property.
- the contact pressure spring 18 is sandwiched between the inner surface on the tip end side of the drive shaft 11 and one main surface 10 a of the movable contact 10.
- the permanent magnet 15 is provided at a position opposite to the first fixed contact 7 a and the second fixed contact 7 b in the axial direction of the drive shaft 11 with respect to the movable contact 10.
- the switch 1 includes only one permanent magnet 15 in each arc-extinguishing chamber.
- An insulating plate 17 is attached to the surface of the permanent magnet 15 on the movable contact 10 side.
- the insulating plate 17 has a substantially rectangular parallelepiped outer shape.
- the insulating plate 17 has a longitudinal direction in the direction along the extension direction of the movable contact 10.
- the width of the insulating plate 17 is larger than the width of the permanent magnet 15 in the width direction perpendicular to each of the extending direction of the movable contact 10 and the axial direction of the drive shaft 11. When viewed in the axial direction of the drive shaft 11, the entire permanent magnet 15 overlaps the insulating plate 17.
- a support 12 d is attached to the surface of the permanent magnet 15 opposite to the surface to which the insulating plate 17 is attached.
- the permanent magnet 15 is fixed to the arc cover 12c by a support 12d.
- the permanent magnet 15 has the N pole on the first outer yoke 14 a side and the S pole on the second outer yoke 14 b side. The direction of the magnetic poles of the permanent magnet 15 may be reversed.
- the first outer yoke 14a is made of, for example, a magnetic material such as iron. One end of the first outer yoke 14 a is connected to the permanent magnet 15. The other end of the first outer yoke 14a is located near the first fixed contact 8a and the first movable contact 9a.
- the first outer yoke 14 a has a portion extending in the direction along the extending direction of the movable contact 10 and a portion extending in the direction along the axial direction of the drive shaft 11.
- the portion of the first outer yoke 14a extending in the direction along the extending direction of the movable contact 10 is opposed to the one major surface 10a of the movable contact 10 at a distance.
- a portion of the first outer yoke 14a extending in the direction along the axial direction of the drive shaft 11 is opposed to the one end surface 10b of the movable contact 10 at a distance.
- the shape of the first outer yoke 14a is not limited to the above, and in the range in which a magnetic field component described later can be generated, viewed from the axial direction of the drive shaft 11, the extending direction of the movable contact 10 is along A part of the first outer yoke 14a may be positioned outside the one end of the movable contact 10 in the direction. That is, in the direction in which the first fixed contact 8a and the second fixed contact 8b are arranged, a part of the first outer yoke 14a may be positioned outside the one end of the movable contact 10.
- the second outer yoke 14b is made of, for example, a magnetic material such as iron.
- One end of the second outer yoke 14 b is connected to the permanent magnet 15.
- the other end of the second outer yoke 14b is located near the second fixed contact 8b and the second movable contact 9b.
- the second outer yoke 14 b has a portion extending in the direction along the extending direction of the movable contact 10 and a portion extending in the direction along the axial direction of the drive shaft 11. A portion of the second outer yoke 14 b extending in the direction along the extending direction of the movable contact 10 is opposed to the one main surface 10 a of the movable contact 10 at a distance. A portion of the second outer yoke 14b extending in the direction along the axial direction of the drive shaft 11 is opposed to the other end surface 10c of the movable contact 10 at a distance.
- the shape of the second outer yoke 14b is not limited to the above, and in the range in which the magnetic field component described later can be generated, viewed from the axial direction of the drive shaft 11, the extending direction of the movable contact 10 extends.
- Part of the second outer yoke 14 b may be located at a position outside the other end of the movable contact 10 in the direction. That is, in the direction in which the first fixed contact 8 a and the second fixed contact 8 b are arranged, a part of the second outer yoke 14 b may be located at a position outside the other end of the movable contact 10.
- FIG. 5 is the figure which looked at the external appearance of the member which comprises the inner yoke of the switch which concerns on Embodiment 1 of this invention from the side side.
- FIG. 6 is a view of members constituting the inner yoke of FIG. 5 as viewed in the direction of arrow VI.
- the first inner yoke 16a and the second inner yoke 16b are integrally configured.
- the member constituting the inner yoke is made of, for example, a magnetic material such as iron.
- a plate-like magnetic body is bent and shaped as a member constituting the inner yoke.
- the first inner yoke 16a and the second inner yoke 16b face each other at an interval.
- Each of the first inner yoke 16a and the second inner yoke 16b has a flat plate shape.
- Each of the first inner yoke 16a and the second inner yoke 16b has a rectangular shape when viewed from the direction opposite to each other.
- first inner yoke 16a and one end of the second inner yoke 16b are connected to each other by a connecting portion extending in a direction perpendicular to each of the first inner yoke 16a and the second inner yoke 16b.
- the connection portion is attached to the drive shaft 11 so as to extend in a direction perpendicular to the axial direction of the drive shaft 11.
- each of the first inner yoke 16 a and the second inner yoke 16 b is connected to the drive shaft 11.
- the member constituting the inner yoke and the drive shaft 11 are integrally formed.
- the first inner yoke 16 a is located between the first fixed contact 7 a and the drive shaft 11 when viewed in the axial direction of the drive shaft 11.
- the second inner yoke 16 b is positioned between the second fixed contact 7 b and the drive shaft 11 when viewed in the axial direction of the drive shaft 11.
- a part of the first outer yoke 14a and the first inner side between the first fixed contact 8a and the first movable contact 9a faces each other.
- the outer width of the first inner yoke 16a is larger than the outer width of the first outer yoke 14a.
- the first outer yoke 14a and the first inner yoke 16a do not necessarily have to face each other, the first fixed contact 8a and the first fixed contact 8a can be seen from the direction along the extending direction of the movable contact 10. It is preferable from the viewpoint of generating a magnetic field component described later that a part of the first outer yoke 14a and a part of the first inner yoke 16a are positioned between the movable contact 9a and the movable contact 9a. Also, the outer width of the first inner yoke 16a may be equal to the outer width of the first outer yoke 14a.
- a part of the yoke 16b faces each other.
- the outer width of the second inner yoke 16b is larger than the outer width of the second outer yoke 14b.
- the second outer yoke 14b and the second inner yoke 16b do not necessarily have to face each other, the second fixed contact 8b and the second second contact may be viewed from the direction along the extending direction of the movable contact 10. It is preferable that a part of the second outer yoke 14 b and a part of the second inner yoke 16 b be located between the movable contact 9 b and the movable contact 9 b from the viewpoint of generating a magnetic field component described later.
- the outer width of the second inner yoke 16b may be equal to the outer width of the second outer yoke 14b.
- the arc cover 12c is made of an insulator.
- a grid 13 is provided on the inner surface of the arc cover 12c.
- the grid 13 is made of nonmagnetic metal such as stainless steel or copper or nonmagnetic ceramic.
- the grid 13 includes the first fixed contact 7a, the second fixed contact 7b, the first fixed contact 8a, the second fixed contact 8b, the first movable contact 9a, the second movable contact 9b, and the movable contact 10 , Electrically isolated.
- the grids 13 are provided to further enhance the arc interrupting performance, but the grids 13 may not necessarily be provided.
- the area surrounded by the first fixed contact 7a, the second fixed contact 7b and the arc cover 12c is each arc-extinguishing chamber.
- the switch 1 includes the operation coil 3, the fixed iron core 4, the movable iron core 5, the tripping spring 6, the mount 12 a and the base 12 b. Further comprising
- the box 12 is configured by connecting the mounting base 12 a and the base 12 b to each other.
- the operation coil 3, the movable iron core 5, the fixed iron core 4 and the tripping spring 6 are accommodated inside the box.
- the operation coil 3 is disposed on the outer peripheral side of the leg of the movable core 5 and the fixed core 4.
- the fixed core 4 is fixed to the mount 12a.
- the tripping spring 6 is sandwiched between the operation coil 3 and the movable iron core 5.
- the movable core 5 is connected to the drive shaft 11.
- the base 12 b is provided with an opening through which the drive shaft 11 is inserted.
- a first fixed contact 7a and a second fixed contact 7b are mounted on the side of the base 12b opposite to the mounting base 12a.
- Each of the mount 12a and the base 12b is made of an insulator. Since the first fixed contact 7a and the second fixed contact 7b are attached to the base 12b, the base 12b is excellent in heat resistance and insulation, such as a synthetic resin or a material in which a glass material is added to the synthetic resin. Materials are used.
- Each of movable core 5 and fixed core 4 is made of, for example, a magnetic material such as iron.
- Each of the movable core 5 and the fixed core 4 may be configured by laminating magnetic steel plates.
- the operation of the switch 1 When closing the switch 1, first, the operation coil 3 is excited. By energizing the operation coil 3, the movable core 5 is attracted to the fixed core 4 against the biasing force of the tripping spring 6. Thus, the drive shaft 11 fixed to the movable core 5 also moves to the fixed core 4 side. As the drive shaft 11 moves, the movable contact 10 also moves, the first movable contact 9a contacts the first fixed contact 8a, and the second movable contact 9b contacts the second fixed contact 8b.
- the biasing force of the contact pressure spring 18 presses the first movable contact 9a to the first fixed contact 8a and presses the second movable contact 9b to the second fixed contact 8b. Thereby, the contact resistance between the first movable contact 9a and the first fixed contact 8a can be sufficiently lowered. Further, the contact resistance between the second movable contact 9 b and the second fixed contact 8 b can be sufficiently reduced.
- the switch 1 is closed. With the switch 1 closed, a forward current or a reverse current, which will be described later, flows through the switch 1.
- the switch 1 is in the open state.
- a high temperature arc is generated between the first movable contact 9a and the first fixed contact 8a.
- a high temperature arc is generated between the second movable contact 9b and the second fixed contact 8b. Since the arc is conductive, current flows in the original conduction path until the arc disappears even after opening.
- FIG. 7 is a partially enlarged view schematically showing a magnetic field distribution generated from the front side when the arc cover is removed from the switch according to Embodiment 1 of the present invention.
- FIG. 8 is a cross-sectional view as viewed in the direction of arrows of line VIII-VIII in FIG. In FIG. 7 and FIG. 8, the insulating plate 17 is not shown.
- the magnetic flux 20 is emitted from the N pole of the permanent magnet 15 and distributed in a closed loop toward the S pole of the permanent magnet 15.
- the magnetic flux 20 passes through the first outer yoke 14a, the first inner yoke 16a, the second inner yoke 16b, and the second outer yoke 14b, which are made of a magnetic material having the property of easily passing the magnetic flux to air.
- the permanent magnet 15 magnetically couples the first outer yoke 14a, the second outer yoke 14b, the first inner yoke 16a, and the second inner yoke 16b.
- the permanent magnet 15 extends the movable contact 10 at each of the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b.
- a magnetic field component in the direction along the existing direction is generated. That is, in each of the permanent magnet 15 between the first fixed contact 8 a and the first movable contact 9 a and between the second fixed contact 8 b and the second movable contact 9 b, the first fixed contact 8 a and the first fixed contact 8 a A magnetic field component is generated in the direction in which the two fixed contacts 8b are aligned.
- the magnetic flux 20 has the above width in the vicinity of the first inner yoke 16a. It spreads in the direction and is distributed so as to converge in the vicinity of the first outer yoke 14a.
- the magnetic flux 20 spreads in the width direction in the vicinity of the second inner yoke 16b and in the vicinity of the second outer yoke 14b. It distributes to converge.
- FIG. 9 schematically shows a driving force acting on an arc generated when a forward current flows when the arc cover is removed from the switch according to Embodiment 1 of the present invention as viewed from the front side It is the elements on larger scale which show.
- the insulating plate 17 is not shown.
- the first fixed contact 7a, the first fixed contact 8a, the first movable contact 9a, the movable contact 10, the second movable contact 9b, the second fixed contact 8b and the second fixed contact 7b As shown in FIG. 9, the first fixed contact 7a, the first fixed contact 8a, the first movable contact 9a, the movable contact 10, the second movable contact 9b, the second fixed contact 8b and the second fixed contact 7b.
- the current I flowing in this order is taken as a positive direction current.
- the driving force a1 acts on the arc generated between the first fixed contact 8a and the first movable contact 9a according to Fleming's left-hand rule, and the second fixed contact 8b and the second fixed contact 8b
- the driving force a2 acts on the arc generated between the two movable contacts 9b.
- the magnetic flux 20 develops in the direction along the extending direction of the movable contact 10, and this region The direction in which the magnetic flux 20 spreads tends to be inclined in the width direction as the distance in the width direction is increased. In the present embodiment, this tendency appears notably because the outer width of the first inner yoke 16a is larger than the outer width of the first outer yoke 14a.
- the driving force a1 mainly acts on one of the width directions with respect to the arc generated between the first fixed contact 8a and the first movable contact 9a, and then in the extending direction of the movable contact 10 It mainly acts in the direction away from the movable contact 10. As a result, the arc generated between the first fixed contact 8a and the first movable contact 9a is drawn long due to the action of the driving force a1.
- the driving force a2 mainly acts on the other in the width direction with respect to the arc generated between the second fixed contact 8b and the second movable contact 9b, and then the extending direction of the movable contact 10 Act in the direction away from the movable contact 10.
- the arc generated between the second fixed contact 8b and the second movable contact 9b is drawn long due to the action of the driving force a2.
- FIG. 10 schematically shows a driving force acting on an arc generated when a reverse direction current is flowing, as viewed from the front side in a state where the arc cover is removed from the switch according to Embodiment 1 of the present invention It is the elements on larger scale which show.
- the insulating plate 17 is not shown.
- the second fixed contact 7b, the second fixed contact 8b, the second movable contact 9b, the movable contact 10 the first movable contact 9a, the first fixed contact 8a and the first fixed contact 7a
- the current I flowing in this order is the reverse current.
- the driving force a3 acts on the arc generated between the first fixed contact 8a and the first movable contact 9a according to Fleming's left-hand rule, and the second fixed contact 8b and the second fixed contact 8b
- the driving force a4 acts on the arc generated between the two movable contacts 9b.
- the driving force a3 mainly acts on the other in the width direction with respect to the arc generated between the first fixed contact 8a and the first movable contact 9a, and then the movable contact in the extending direction of the movable contact 10 It acts mainly in the direction away from the child 10. As a result, the arc generated between the first fixed contact 8a and the first movable contact 9a is drawn long due to the action of the driving force a3.
- the driving force a4 mainly acts on one side in the width direction, and then the extending direction of the movable contact 10 Act in the direction away from the movable contact 10.
- the arc generated between the second fixed contact 8b and the second movable contact 9b is drawn long due to the action of the driving force a4.
- the driving force for the arc can be obtained in both the forward current flow and the reverse current flow.
- the movable contact 10 can be moved away from the movable contact 10 in the extending direction of the movable contact 10.
- the drawn arc is drawn to a sufficiently long arc length, or cooled by coming into contact with the grid 13 and is extinguished. Thereby, the current I is cut off.
- the permanent magnet 15 magnetically couples the first outer yoke 14a, the second outer yoke 14b, the first inner yoke 16a, and the second inner yoke 16b, Magnetic field components in a direction along the extending direction of the movable contact 10 at each of the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b Generate As a result, the driving force can be effectively applied to the arc, and the arc extinguishing performance of the switch 1 can be enhanced.
- the outer width of the first inner yoke 16a is larger than the outer width of the first outer yoke 14a
- the outer width of the second inner yoke 16b is larger than the outer width of the second outer yoke 14b.
- the magnetic field distribution of the magnetic field distribution is plane-symmetrical with respect to a plane passing through the center of the movable contact 10 in the extending direction of the movable contact 10 and parallel to the width direction. Is preferred.
- only one permanent magnet 15 is disposed in one arc extinguishing chamber.
- the manufacturing cost of the switch 1 can be reduced.
- integrally forming the first inner yoke 16a and the second inner yoke 16b the number of parts can be reduced and the manufacturing cost of the switch 1 can be reduced.
- the permanent magnet 15 is disposed at a position away from each of the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b at which an arc occurs. By doing this, it is possible to suppress the thermal demagnetization of the permanent magnet 15 due to the heat of the arc. Even when the whole of the permanent magnet 15 overlaps the insulating plate 17 when viewed from the axial direction of the drive shaft 11, the heat of the arc can be suppressed from being applied to the permanent magnet 15. Thereby, the arc-extinguishing performance of the switch 1 can be maintained long.
- each of the first inner yoke 16a and the second inner yoke 16b since each of the first inner yoke 16a and the second inner yoke 16b is connected to the drive shaft 11, each of the first inner yoke 16a and the second inner yoke 16b has a movable contact It is not necessary to provide a notch for preventing interference with 10.
- the switch according to the second embodiment of the present invention differs from the switch 1 of the first embodiment only in the shape of each of the first inner yoke and the second inner yoke. The description will not be repeated for the configuration that is.
- FIG. 11 is a side view of the external appearance of members constituting the inner yoke of the switch according to Embodiment 2 of the present invention.
- FIG. 12 is a view of a member constituting the inner yoke of FIG. 11 as viewed in the arrow XII direction.
- FIG. 13 is a view of members constituting the inner yoke of FIG. 11 as viewed in the direction of arrow XIII.
- the first inner yoke 26a is provided with the axially extending notch 26as at the center in the width direction. ing.
- the second inner yoke 26 b is provided with a cutout 26 bs extending in the axial direction at a central portion in the width direction.
- the notches 26 as and the notches 26 bs have substantially the same shape, and are open to the movable contact 10 side.
- the magnetic flux generated between the first outer yoke 14a and the first inner yoke 26a is closer to the central portion of the first inner yoke 26a in the width direction.
- the magnetic flux distribution can be broadened in the width direction.
- the magnetic flux generated between the second outer yoke 14b and the second inner yoke 26b can be obtained by providing the notch 26bs in the second inner yoke 26b in the second inner yoke 26b in the width direction.
- the convergence toward the central portion can be reduced, and the magnetic flux distribution can be broadened in the width direction.
- the driving force can be more effectively applied to the arc in the direction in which the movable contact 10 extends and in the direction away from the movable contact 10.
- the driving force can be effectively applied to the arc, and the arc extinguishing performance of the switch can be enhanced.
- the first inner yoke 26a and the second inner yoke 26b are not connected to the drive shaft 11, and the base It may be connected to the circumferential surface of the opening of 12b.
- an opening for the drive shaft 11 to pass through is provided at the connection portion connecting the first inner yoke 26a and the second inner yoke 26b.
- the permanent magnet 15 magnetically couples the first outer yoke 14a, the second outer yoke 14b, the first inner yoke 26a and the second inner yoke 26b, and the first fixed contact 8a and the first fixed contact 8a.
- a magnetic field component in a direction along the extending direction of the movable contact 10 is generated between each of the movable contact 9 a and the second fixed contact 8 b and the second movable contact 9 b.
- the switch according to the third embodiment of the present invention mainly includes the configuration of the permanent magnet, the first outer yoke, the second outer yoke, the first inner yoke, and the second inner yoke. , And therefore, the description will not be repeated for the same configuration as that of the switch 1 of the first embodiment.
- FIG. 14 is a partially enlarged view of the switch according to Embodiment 3 of the present invention from which the arc cover is removed, as viewed from the front side.
- FIG. 15 is a cross-sectional view as viewed in the direction of the arrows XV-XV in FIG.
- the switch 30 includes the first fixed contact 7a, the second fixed contact 7b, the movable contact 10, and the drive shaft 11.
- the first permanent magnet 35a and the second permanent magnet 35b are provided at positions opposite to the movable contact 10 in the axial direction of the drive shaft 11 with respect to the first fixed contact 7a and the second fixed contact 7b.
- the switch 30 includes two permanent magnets in each arc-extinguishing chamber.
- the first outer yoke 34a is made of, for example, a magnetic material such as iron.
- the first outer yoke 34a is coated with insulation.
- One end of the first outer yoke 34a is connected to the N pole of the first permanent magnet 35a.
- the other end of the first outer yoke 34a is located near the first fixed contact 8a and the first movable contact 9a.
- the first outer yoke 34 a has a portion extending in the direction along the extending direction of the movable contact 10 and a portion extending in the direction along the axial direction of the drive shaft 11.
- a portion of the first outer yoke 34 a extending in the direction along the extending direction of the movable contact 10 is opposed to the other main surface of the movable contact 10 at a distance.
- the portion of the first outer yoke 34a extending in the direction along the axial direction of the drive shaft 11 penetrates the central portion of the first fixed contact 7a in the width direction.
- the shape of the first outer yoke 34a is not limited to the above, and is in the extending direction of the movable contact 10 as viewed from the axial direction of the drive shaft 11 within the range where the magnetic field component described later can be generated. A part of the first outer yoke 34a may be positioned outside the one end of the movable contact 10 in the direction.
- the second outer yoke 34 b is made of, for example, a magnetic material such as iron.
- the second outer yoke 34 b is coated with an insulator.
- One end of the second outer yoke 34 b is connected to the S pole of the second permanent magnet 35 b.
- the other end of the second outer yoke 34 b is located near the second fixed contact 8 b and the second movable contact 9 b.
- the second outer yoke 34 b has a portion extending in the direction along the extending direction of the movable contact 10 and a portion extending in the direction along the axial direction of the drive shaft 11.
- a portion of the second outer yoke 34 b extending in the direction along the extending direction of the movable contact 10 is opposed to the other main surface of the movable contact 10 at a distance.
- the portion of the second outer yoke 34b extending in the direction along the axial direction of the drive shaft 11 penetrates the central portion of the second fixed contact 7b in the width direction.
- the shape of the second outer yoke 34b is not limited to the above, and in the range in which the magnetic field component described later can be generated, viewed from the axial direction of the drive shaft 11, the extending direction of the movable contact 10 is along Part of the second outer yoke 34 b may be located at a position outside the other end of the movable contact 10 in the direction.
- FIG. 16 is a view of the external appearance of members constituting the inner yoke of the switch according to Embodiment 3 of the present invention as viewed from the side.
- FIG. 17 is a view of a member constituting the inner yoke of FIG. 16 as viewed in the direction of arrow XVII.
- the first inner yoke 36a and the second inner yoke 36b are separately configured.
- Each of the first inner yoke 36a and the second inner yoke 36b is formed of a single plate made of a magnetic material such as iron.
- Each of the first inner yoke 36a and the second inner yoke 36b has a rectangular outer shape.
- Each of the first inner yoke 36a and the second inner yoke 36b is coated with an insulator.
- the first inner yoke 36a is provided with a notch 36as extending in the axial direction at a central portion in the width direction.
- the second inner yoke 36 b is provided with a cutout 36 bs extending in the axial direction at a central portion in the width direction.
- the notches 36 as and the notches 36 bs have substantially the same shape, and are open to the movable contact 10 side.
- the width of each of the notches 36 as and the notches 36 bs is larger than the width of the movable contact 10. This can prevent each of the first inner yoke 36 a and the second inner yoke 36 b from interfering with the movable contact 10.
- first inner yoke 36a is connected to the S pole of the first permanent magnet 35a.
- second inner yoke 36 b is connected to the N pole of the second permanent magnet 35 b.
- the directions of the magnetic poles of the first permanent magnet 35a and the second permanent magnet 35b may be reversed.
- one end of the first inner yoke 36a may be connected to the N pole of the first permanent magnet 35a, and one end of the second inner yoke 36b may be connected to the S pole of the second permanent magnet 35b. If the orientation of the magnetic pole changes, the arc drive direction described later changes, but the arc drive capability and the interrupting performance by it become equivalent.
- the first inner yoke 36 a is located at a position between the first fixed contact 7 a and the drive shaft 11 when viewed in the axial direction of the drive shaft 11.
- the second inner yoke 36 b is positioned between the second fixed contact 7 b and the drive shaft 11 when viewed in the axial direction of the drive shaft 11.
- a part of the first outer yoke 34a and the first inner side between the first fixed contact 8a and the first movable contact 9a faces each other.
- the outer width of the first inner yoke 36a is larger than the outer width of the first outer yoke 34a.
- the first outer yoke 34a and the first inner yoke 36a do not necessarily have to face each other, the first fixed contact 8a and the first fixed contact 8a can be seen from the direction along the extending direction of the movable contact 10. It is preferable that a part of the first outer yoke 34a and a part of the first inner yoke 36a be located between the movable contact 9a and the movable contact 9a from the viewpoint of generating a magnetic field component described later.
- the outer width of the first inner yoke 36a may be equal to the outer width of the first outer yoke 34a.
- the second outer yoke 34b and the second inner yoke 36b do not necessarily have to face each other, the second fixed contact 8b and the second second contact may be viewed from the direction along the extending direction of the movable contact 10. It is preferable that a part of the second outer yoke 34 b and a part of the second inner yoke 36 b be located between the movable contact 9 b and the movable contact 9 b from the viewpoint of generating a magnetic field component described later. Further, the outer width of the second inner yoke 36b may be equal to the outer width of the second outer yoke 34b.
- FIG. 18 is a partial enlarged view schematically showing a magnetic field distribution generated when the front side of the switch according to the third embodiment of the present invention has the arc cover removed.
- FIG. 19 is a cross-sectional view as seen in the direction of the arrows in FIG. 18 taken along line XIX-XIX.
- the magnetic flux 20 is emitted from the N pole of the first permanent magnet 35a and distributed in a closed loop toward the S pole of the second permanent magnet 35b.
- the magnetic flux 20 passes through the first outer yoke 34a, the first inner yoke 36a, the second inner yoke 36b, and the second outer yoke 34b, which are made of a magnetic material having the property of easily passing the magnetic flux to air.
- the first permanent magnet 35a and the second permanent magnet 35b magnetically couple the first outer yoke 14a, the second outer yoke 14b, the first inner yoke 16a, and the second inner yoke 16b.
- the first permanent magnet 35a and the second permanent magnet 35b are each between the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b. , Generate a magnetic field component in the direction along the extension direction of the movable contact 10.
- the magnetic flux 20 has the above width in the vicinity of the first inner yoke 36a. It spreads in the direction and is distributed so as to converge in the vicinity of the first outer yoke 34a.
- the magnetic flux 20 spreads in the width direction in the vicinity of the second inner yoke 36b, and in the vicinity of the second outer yoke 34b. It distributes to converge.
- FIG. 20 schematically shows, as viewed from the front side, a state in which the arc cover is removed from the switch according to Embodiment 3 of the present invention, the driving force acting on the arc generated when current in the positive direction flows. It is the elements on larger scale which show.
- a driving force a1 acts on the arc generated between the first fixed contact 8a and the first movable contact 9a according to Fleming's left-hand rule.
- the driving force a2 acts on the arc generated between the second fixed contact 8b and the second movable contact 9b.
- the driving force a1 mainly acts on one side in the width direction with respect to the arc generated between the first fixed contact 8a and the first movable contact 9a, and then the movable contact in the extending direction of the movable contact 10 It acts mainly in the direction away from the child 10. As a result, the arc generated between the first fixed contact 8a and the first movable contact 9a is drawn long due to the action of the driving force a1.
- the driving force a2 mainly acts on the other in the width direction with respect to the arc generated between the second fixed contact 8b and the second movable contact 9b, and then the extending direction of the movable contact 10 Act in the direction away from the movable contact 10.
- the arc generated between the second fixed contact 8b and the second movable contact 9b is drawn long due to the action of the driving force a2.
- FIG. 21 schematically shows a driving force acting on an arc generated when a reverse direction current is flowing, as viewed from the front side in a state in which the arc cover is removed from the switch according to Embodiment 3 of the present invention It is the elements on larger scale which show.
- the driving force a3 acts on the arc generated between the first fixed contact 8a and the first movable contact 9a according to Fleming's left-hand rule.
- the driving force a4 acts on the arc generated between the second fixed contact 8b and the second movable contact 9b.
- the driving force a3 mainly acts on the other in the width direction with respect to the arc generated between the first fixed contact 8a and the first movable contact 9a, and then the movable contact in the extending direction of the movable contact 10 It acts mainly in the direction away from the child 10. As a result, the arc generated between the first fixed contact 8a and the first movable contact 9a is drawn long due to the action of the driving force a3.
- the driving force a4 mainly acts on one side in the width direction, and then the extending direction of the movable contact 10 Act in the direction away from the movable contact 10.
- the arc generated between the second fixed contact 8b and the second movable contact 9b is drawn long due to the action of the driving force a4.
- the driving force for the arc can be obtained in both the forward current flow and the reverse current flow. After acting on any one of the width directions, the movable contact 10 can be moved away from the movable contact 10 in the extending direction of the movable contact 10.
- the first permanent magnet 35a and the second permanent magnet 35b are the first outer yoke 34a, the second outer yoke 34b, the first inner yoke 36a, and the second inner yoke.
- 36b is magnetically coupled, and the extension of the movable contact 10 is extended between the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b, respectively.
- a magnetic field component in the direction along the existing direction is generated.
- the driving force can be effectively applied to the arc, and the arc extinguishing performance of the switch 30 can be enhanced.
- the driving force is applied to the arc in any one of the above width directions, and then the movable contact 10 is It can act in the direction away from the movable contact 10 in the extending direction.
- the arc extinguishing performance of the switch 30 can be further enhanced regardless of the direction of current flow.
- the outer width of the first inner yoke 36a is larger than the outer width of the first outer yoke 34a
- the outer width of the second inner yoke 36b is larger than the outer width of the second outer yoke 34b.
- the magnetic flux generated between the first outer yoke 34a and the first inner yoke 36a is closer to the central portion of the first inner yoke 36a in the width direction.
- the magnetic flux distribution can be broadened in the width direction.
- the magnetic flux generated between the second outer yoke 34b and the second inner yoke 36b is provided by the notch 36bs in the second inner yoke 36b, the magnetic flux generated in the width direction of the second inner yoke 36b.
- the convergence toward the central portion can be reduced, and the magnetic flux distribution can be broadened in the width direction.
- the driving force can be more effectively applied to the arc in the direction in which the movable contact 10 extends and in the direction away from the movable contact 10.
- the driving force can be effectively applied to the arc, and the arc extinguishing performance of the switch can be enhanced.
- the first inner yoke 36a is connected to the first permanent magnet 35a
- the second inner yoke 36b is connected to the second permanent magnet 35b. Because the gap is smaller, a stronger driving force can be applied to the arc. Thereby, the arc-extinguishing performance of the switch 30 can be enhanced. If the strength of the driving force is maintained, the permanent magnets can be miniaturized, and the cost per permanent magnet can be reduced.
- each of the first outer yoke 34a and the first inner yoke 36a is coated with an insulating material, a short circuit between the first fixed contact 7a and the movable contact 10 can be suppressed.
- the insulation coating of each of the second outer yoke 34 b and the second inner yoke 36 b can prevent a short circuit between the second fixed contact 7 b and the movable contact 10.
- the switch according to the fourth embodiment of the present invention mainly includes the configuration of the permanent magnet, the first outer yoke, the second outer yoke, the first inner yoke, and the second inner yoke, and the switch 1 of the first embodiment. , And therefore, the description will not be repeated for the same configuration as that of the switch 1 of the first embodiment.
- FIG. 22 is a partial enlarged view of the switch according to Embodiment 4 of the present invention from which the arc cover is removed, as viewed from the front side.
- FIG. 23 is a cross-sectional view as seen in the direction of the arrows in FIG. 22 taken along line XXIII-XXIII.
- the switch 40 includes a first fixed contact 7 a, a second fixed contact 7 b, a movable contact 10, and a drive shaft 11.
- the first permanent magnet 45a and the second permanent magnet 45b are provided at positions opposite to the first fixed contact 7a and the second fixed contact 7b in the axial direction of the drive shaft 11 with respect to the movable contact 10 There is.
- the switch 40 includes two permanent magnets in each arc-extinguishing chamber.
- a support 12d is attached to each of the first permanent magnet 45a and the second permanent magnet 45b.
- Each of the first permanent magnet 45a and the second permanent magnet 45b is fixed to the arc cover by a support 12d.
- the first outer yoke 44a is made of, for example, a magnetic material such as iron. One end of the first outer yoke 44a is connected to the N pole of the first permanent magnet 45a. The other end of the first outer yoke 44a is located near the first fixed contact 8a and the first movable contact 9a.
- the first outer yoke 44 a has a portion extending in the direction along the extending direction of the movable contact 10 and a portion extending in the direction along the axial direction of the drive shaft 11. A portion of the first outer yoke 44a extending in the direction along the extending direction of the movable contact 10 is opposed to one main surface of the movable contact 10 at a distance. A portion of the first outer yoke 44 a extending in the direction along the axial direction of the drive shaft 11 is opposed to one end surface of the movable contact 10 at a distance.
- the shape of the first outer yoke 44a is not limited to the above, and is in the extending direction of the movable contact 10 as viewed from the axial direction of the drive shaft 11 within the range where the magnetic field component described later can be generated. A part of the first outer yoke 44a may be positioned outside the one end of the movable contact 10 in the direction.
- the second outer yoke 44b is made of, for example, a magnetic material such as iron.
- One end of the second outer yoke 44b is connected to the S pole of the second permanent magnet 45b.
- the other end of the second outer yoke 44b is located near the second fixed contact 8b and the second movable contact 9b.
- the second outer yoke 44 b has a portion extending in the direction along the extending direction of the movable contact 10 and a portion extending in the direction along the axial direction of the drive shaft 11.
- a portion of the second outer yoke 34 b extending in the direction along the extending direction of the movable contact 10 is opposed to one main surface of the movable contact 10 at a distance.
- a portion of the second outer yoke 44b extending in the direction along the axial direction of the drive shaft 11 is opposed to the other end surface of the movable contact 10 at a distance.
- the shape of the second outer yoke 44b is not limited to the above, and is in the extending direction of the movable contact 10 as viewed from the axial direction of the drive shaft 11 within the range where the magnetic field component described later can be generated.
- a part of the second outer yoke 44b may be located at a position outside the other end of the movable contact 10 in the direction.
- FIG. 24 is a view of the external appearance of members constituting the inner yoke of the switch according to Embodiment 4 of the present invention as viewed from the side.
- FIG. 25 is a view of a member constituting the inner yoke of FIG. 24 as viewed in the direction of arrow XXV.
- the first inner yoke 46a and the second inner yoke 46b are separately configured.
- Each of the first inner yoke 46a and the second inner yoke 46b is formed of a single plate made of a magnetic material such as iron.
- Each of the first inner yoke 46a and the second inner yoke 46b has a rectangular outer shape.
- the first inner yoke 46a is provided with a cutout 46as extending in the axial direction at a central portion in the width direction.
- the second inner yoke 46 b is provided with a cutout 46 bs extending in the axial direction at a central portion in the width direction.
- the notches 46 as and the notches 46 bs have substantially the same shape, and are open to the movable contact 10 side.
- the width of each of the notches 46 as and the notches 46 bs is larger than the width of the movable contact 10. This can prevent each of the first inner yoke 46 a and the second inner yoke 46 b from interfering with the movable contact 10.
- first inner yoke 46a is connected to the S pole of the first permanent magnet 45a.
- One end of the second inner yoke 46b is connected to the N pole of the second permanent magnet 45b.
- the directions of the magnetic poles of the first permanent magnet 45a and the second permanent magnet 45b may be reversed.
- one end of the first inner yoke 46a may be connected to the N pole of the first permanent magnet 45a, and one end of the second inner yoke 46b may be connected to the S pole of the second permanent magnet 45b. If the orientation of the magnetic pole changes, the arc drive direction described later changes, but the arc drive capability and the interrupting performance by it become equivalent.
- the first inner yoke 46 a is positioned between the first fixed contact 7 a and the drive shaft 11 when viewed in the axial direction of the drive shaft 11.
- the second inner yoke 46 b is located between the second fixed contact 7 b and the drive shaft 11 when viewed in the axial direction of the drive shaft 11.
- the outer width of the first inner yoke 46a is larger than the outer width of the first outer yoke 44a.
- the first outer yoke 44a and the first inner yoke 46a may not necessarily be opposed to each other, the first fixed contact 8a and the first fixed contact 8a may be viewed from the direction along the extending direction of the movable contact 10. It is preferable that a part of the first outer yoke 44 a and a part of the first inner yoke 46 a be located between the movable contact 9 a and the movable contact 9 a from the viewpoint of generating a magnetic field component described later. Also, the outer width of the first inner yoke 46a may be equal to the outer width of the first outer yoke 44a.
- a part of the yoke 46b faces each other.
- the outer width of the second inner yoke 46b is larger than the outer width of the second outer yoke 44b.
- the second outer yoke 44b and the second inner yoke 46b do not necessarily have to face each other, the second fixed contact 8b and the second fixed contact 8b can be viewed from the direction along the extending direction of the movable contact 10. It is preferable that a part of the second outer yoke 44 b and a part of the second inner yoke 46 b be located between the movable contact 9 b and the movable contact 9 b from the viewpoint of generating a magnetic field component described later.
- the outer width of the second inner yoke 46b may be equal to the outer width of the second outer yoke 44b.
- the first permanent magnet 45a and the second permanent magnet 45b magnetically couple the first outer yoke 44a, the second outer yoke 44b, the first inner yoke 46a, and the second inner yoke 46b.
- the first permanent magnet 45a and the second permanent magnet 45b are each between the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b.
- the first permanent magnet 45a and the second permanent magnet 45b are the first outer yoke 44a, the second outer yoke 44b, the first inner yoke 46a and the second inner yoke.
- 46b is magnetically coupled to extend the movable contact 10 at each of the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b.
- a magnetic field component in the direction along the existing direction is generated.
- the driving force is applied to the arc in any one of the above width directions, and then the movable contact 10 is It can act in the direction away from the movable contact 10 in the extending direction.
- the arc extinguishing performance of the switch 30 can be further enhanced regardless of the direction of current flow.
- the outer width of the first inner yoke 46a is larger than the outer width of the first outer yoke 44a
- the outer width of the second inner yoke 46b is larger than the outer width of the second outer yoke 44b.
- the magnetic flux generated between the first outer yoke 44a and the first inner yoke 46a is closer to the central portion of the first inner yoke 46a in the width direction.
- the magnetic flux distribution can be broadened in the width direction.
- the magnetic flux generated between the second outer yoke 44b and the second inner yoke 46b is provided by the notch 46bs in the second inner yoke 46b in the second inner yoke 46b in the width direction.
- the convergence toward the central portion can be reduced, and the magnetic flux distribution can be broadened in the width direction.
- the driving force can be more effectively applied to the arc in the direction in which the movable contact 10 extends and in the direction away from the movable contact 10.
- the driving force can be effectively applied to the arc, and the arc extinguishing performance of the switch can be enhanced.
- the first inner yoke 46a is connected to the first permanent magnet 45a
- the second inner yoke 46b is connected to the second permanent magnet 45b. Because the gap is smaller, a stronger driving force can be applied to the arc. Thereby, the arc-extinguishing performance of the switch 40 can be enhanced. If the strength of the driving force is maintained, the permanent magnets can be miniaturized, and the cost per permanent magnet can be reduced.
- Embodiment 5 The switch according to the fifth embodiment of the present invention will be described below.
- the switch according to the fifth embodiment of the present invention is different from the switch 40 of the fourth embodiment in the shapes of the first outer yoke and the second outer yoke, respectively. Description will not be repeated for similar configurations.
- FIG. 26 is a partially enlarged view of the switch according to Embodiment 5 of the present invention from which the arc cover is removed, as viewed from the front side.
- FIG. 27 is a cross-sectional view as viewed in the direction of arrows in lines XXVII-XXVII of FIG.
- the switch 50 includes the first fixed contact 7a, the second fixed contact 7b, the movable contact 10, and the drive shaft 11.
- the first outer yoke 54a is made of, for example, a magnetic material such as iron.
- the first outer yoke 54 a extends in the direction along the extending direction of the movable contact 10.
- the first outer yoke 54 a faces the one main surface of the movable contact 10 at a distance.
- One end of the first outer yoke 54a is connected to the N pole of the first permanent magnet 45a.
- the other end of the first outer yoke 54 a is located outside the one end of the movable contact 10 in the direction along the extension direction of the movable contact 10 when viewed from the axial direction of the drive shaft 11.
- the second outer yoke 54b is made of, for example, a magnetic material such as iron.
- the second outer yoke 54 b extends in the direction along the extending direction of the movable contact 10.
- the second outer yoke 54 b is opposed to one main surface of the movable contact 10 at an interval.
- One end of the second outer yoke 54b is connected to the S pole of the second permanent magnet 45b.
- the other end of the second outer yoke 54 b is located outside the other end of the movable contact 10 in the direction along the extension direction of the movable contact 10 when viewed from the axial direction of the drive shaft 11.
- the first permanent magnet 45a and the second permanent magnet 45b magnetically couple the first outer yoke 54a, the second outer yoke 54b, the first inner yoke 46a, and the second inner yoke 46b.
- the first permanent magnet 45a and the second permanent magnet 45b are each between the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b.
- the first permanent magnet 45a and the second permanent magnet 45b are the first outer yoke 54a, the second outer yoke 54b, the first inner yoke 46a and the second inner yoke.
- 46b is magnetically coupled to extend the movable contact 10 at each of the first fixed contact 8a and the first movable contact 9a and between the second fixed contact 8b and the second movable contact 9b.
- a magnetic field component in the direction along the existing direction is generated.
- each of the first outer yoke 54a and the second outer yoke 54b can be formed in a simple shape. Further, each of the first outer yoke 54a and the second outer yoke 54b can be inhibited from contacting and damaging the arc.
- the switch according to the sixth embodiment of the present invention is different from the switch 30 of the third embodiment in the shape of each of the first fixed contact and the second fixed contact, so that the switch according to the third embodiment Descriptions will not be repeated for configurations that are similar to 30.
- FIG. 28 is a partially enlarged view of the switch according to Embodiment 6 of the present invention from which the arc cover is removed, as viewed from the front side.
- FIG. 29 is a cross-sectional view as viewed in the direction of the arrows in FIG. 28 taken along line XXIX-XXIX.
- a switch 60 includes a first fixed contact 67a, a second fixed contact 67b, a movable contact 10, and a drive shaft 11.
- the first fixed contact 67 a has a longitudinal direction, and a portion extending in the longitudinal direction so as to approach the drive shaft 11 and along the drive shaft 11 so as to bend from this portion and approach the movable contact 10 It includes an extending portion and a portion extending longitudinally away from the drive shaft 11 by bending from this portion.
- the first outer side is provided at the central portion in the width direction.
- a longitudinally extending elongated through hole 67 ah through which the yoke 34 a passes is provided.
- the second fixed contacts 67b are arranged in a line with a gap in the first fixed contacts 67a.
- the second fixed contact 67 b has a longitudinal direction, and a portion extending in the longitudinal direction so as to approach the drive shaft 11 and along the drive shaft 11 so as to bend from this portion and approach the movable contact 10 It includes an extending portion and a portion extending longitudinally away from the drive shaft 11 by bending from this portion.
- a second outside in the central portion in the width direction A longitudinally extending through hole 67bh is provided through which the yoke 34b passes.
- the first fixed contact 8a is provided on the main surface of the other end in the longitudinal direction of a portion extending in the longitudinal direction so as to be apart from the drive shaft 11 of the first fixed contact 67a.
- the second fixed contact 8b is provided on the main surface of one end in the longitudinal direction of a portion extending in the longitudinal direction so as to be apart from the drive shaft 11 of the second fixed contact 67b.
- the first fixed contact 8a and the second fixed contact 8b are aligned in the longitudinal direction of each of the first fixed contact 67a and the second fixed contact 67b.
- each of the first fixed contact 67a and the second fixed contact 67b has a folded shape, the current flowing through each of the first fixed contact 67a and the second fixed contact 67b is used.
- the self magnetic field can be enhanced to increase the driving force acting on the arc.
- a through hole 67ah is provided in the first fixed contact 67a, and a through hole 67bh is provided in the second fixed contact 67b. Therefore, the density of the current flowing through each of the first fixed contact 67a and the second fixed contact 67b is increased. Thereby, the electromagnetic force acting on the arc traveling on the first fixed contact 67a or the second fixed contact 67b can be strengthened to improve the arc interrupting performance. Further, the through hole 67ah is provided in the first fixed contact 67a, and the through hole 67bh is provided in the second fixed contact 67b, so that each of the first outer yoke 34a and the second outer yoke 34b is And can be inhibited from contacting and damaging the arc.
- Embodiment 7 The switch according to the seventh embodiment of the present invention will be described below.
- the switch according to the seventh embodiment of the present invention differs from the switch 60 according to the sixth embodiment in that the movable contact is provided with a recess, so that the switch according to the sixth embodiment is similar to the switch 60 according to the sixth embodiment. Description of certain configurations will not be repeated.
- FIG. 30 is a partially enlarged view of the switch according to Embodiment 7 of the present invention from which the arc cover is removed, as viewed from the front side.
- 31 is a cross-sectional view as viewed in the direction of arrows along line XXXI-XXXI in FIG.
- the switch 70 includes a first fixed contact 67a, a second fixed contact 67b, a movable contact 10x, and a drive shaft 11.
- the movable contact 10x is provided with a recess 10an extending in the axial direction of the drive shaft 11 at a position corresponding to the notch 36as of the first inner yoke 36a on both side surfaces perpendicular to the width direction.
- a recess 10bn extending in the axial direction of the drive shaft 11 is provided at a position corresponding to the notch 36bs of the inner yoke 36b.
- displacement of the movable contact may occur due to vibration or the like.
- the movable contact 10x is provided with the recess 10an and the recess 10bn, the first inner yoke 36a and the second inner yoke 36b are maintained while maintaining the shapes of the first inner yoke 36a and the second inner yoke 36b.
- the separation distance between each of the second inner yokes 36b and the movable contact 10x can be increased.
- each of the first inner yoke 36 a and the second inner yoke 36 b interferes with the movable contact 10 x even when the movable contact 10 x is displaced. Contact can be suppressed.
- the switch according to the eighth embodiment of the present invention is different from the switch 60 of the sixth embodiment in that the arc extinguishing material is provided in the vicinity of the movable contact and the fixed contact. The description of the same configuration as that of the switch 60 will not be repeated.
- FIG. 32 is a partially enlarged view of the switch according to Embodiment 8 of the present invention from which the arc cover is removed, as viewed from the front side.
- FIG. 33 is a cross-sectional view as viewed in the direction of arrows along line XXXIII-XXXIII in FIG.
- a switch 80 includes a first fixed contact 67a, a second fixed contact 67b, a movable contact 10, and a drive shaft 11.
- the first arc-extinguishing members 83a have a flat plate-like outer shape, and are arranged in a pair so as to face each other at an interval in the width direction.
- the first fixed contact 8a and the first movable contact 9a are located between the pair of first arc-extinguishing members 83a.
- the first arc-extinguishing member 83a is made of an insulating material made of an organic substance or an inorganic substance, or a metal material.
- the second arc-extinguishing members 83 b have a flat plate-like outer shape, and are arranged in a pair so as to face each other at an interval in the width direction.
- the second fixed contact 8b and the second movable contact 9b are located between the pair of second arc-extinguishing members 83b.
- the second arc-extinguishing member 83b is made of an insulating material made of an organic substance or an inorganic substance, or a metal material.
- the first arc-extinguishing material 83a and the second arc-extinguishing material 83b by providing the first arc-extinguishing material 83a and the second arc-extinguishing material 83b, the first arc-extinguishing material 83a or the second arc-extinguishing material when the arc is driven in the width direction. Since it contacts with the material 83b, the arc can be attenuated from the initial stage of opening of the switch 80, the arc current can be limited, and the blocking reliability of the switch 80 can be enhanced.
- Embodiment 9 The switch according to the ninth embodiment of the present invention will be described below.
- the switch according to the ninth embodiment of the present invention differs from the switch 60 of the sixth embodiment in that the grid is provided in the vicinity of the movable contact and the fixed contact, so the switch according to the sixth embodiment The description of the same configuration as that of 60 will not be repeated.
- FIG. 34 is a partially enlarged view of the switch according to Embodiment 9 of the present invention from which the arc cover is removed, as viewed from the front side.
- FIG. 35 is a cross-sectional view as seen from the direction of arrows along the line XXXV-XXXV in FIG.
- a switch 90 includes a first fixed contact 67a, a second fixed contact 67b, a movable contact 10, and a drive shaft 11.
- the first grid 93 a has a U-shaped outer shape as viewed from the axial direction of the drive shaft 11.
- the first grid 93a is disposed in the vicinity of the first fixed contact 8a and the first movable contact 9a.
- the first grid 93a is arranged such that the first fixed contact 8a and the first movable contact 9a are located inside the first grid 93a when viewed in the axial direction of the drive shaft 11.
- the plurality of first grids 93 a are arranged to face each other at an interval in the axial direction of the drive shaft 11.
- the number of first grids 93a is not limited to a plurality, and may be one.
- the first grid 93a is made of a nonmagnetic metal such as stainless steel or copper or a nonmagnetic ceramic.
- the second grid 93 b has a U-shaped outer shape as viewed from the axial direction of the drive shaft 11.
- the second grid 93 b is disposed in the vicinity of the second fixed contact 8 b and the second movable contact 9 b.
- the second grid 93 b is disposed so that the second fixed contact 8 b and the second movable contact 9 b are located inside the second grid 93 b when viewed in the axial direction of the drive shaft 11.
- the plurality of second grids 93 b are arranged to face each other at an interval in the axial direction of the drive shaft 11.
- the number of second grids 93b is not limited to a plurality, and may be one.
- the second grid 93 b is made of nonmagnetic metal such as stainless steel or copper or nonmagnetic ceramic.
- the first outer yoke 34a is located inside the first grid 93a, and the second outer yoke 34b is located inside the second grid 93b. However, the first outer yoke 34a is located outside the first grid 93a. The first outer yoke 34a may be positioned, and the second outer yoke 34b may be positioned outside the second grid 93b.
- the arc voltage can be increased and the interrupting performance of the switch 90 can be enhanced.
- the corresponding voltage of the switch 90 can be increased.
- Embodiment 10 The switch according to the tenth embodiment of the present invention will be described below.
- the switch according to Embodiment 10 of the present invention mainly includes the configuration of the permanent magnet, the first outer yoke, the second outer yoke, the first inner yoke, and the second inner yoke.
- the structure is similar to that of the switch of the fourth embodiment and therefore the description will not be repeated.
- FIG. 36 is a partially enlarged view of the switch according to Embodiment 10 of the present invention from which the arc cover has been removed as viewed from the front side.
- FIG. 37 is a cross-sectional view as viewed in the direction of arrows along line XXXVII-XXXVII in FIG.
- FIG. 38 is a view as seen from the direction of XXXVIII in FIG.
- a switch 100 includes a first fixed contact 7a, a second fixed contact 7b, a movable contact 10, and a drive shaft 11.
- Each of the first inner yoke 106a and the second inner yoke 106b is formed by bending a single plate-like magnetic body.
- Each of the first inner yoke 106 a and the second inner yoke 106 b has an inverted U-shaped outline so as to cover a part of the movable contact 10 from above.
- the first inner yoke 106a and the second inner yoke 106b may be integrally formed.
- the first inner yoke 106a is preferably disposed between the first movable contact 9a and the drive shaft 11, but even if the first inner yoke 106a is partially covered with the first movable contact 9a. Good.
- the second inner yoke 106b is preferably disposed between the second movable contact 9b and the drive shaft 11. However, even if a part of the second inner yoke 106b covers the second movable contact 9b. Good.
- the upper portion of the first inner yoke 106a is connected to the N pole of the first permanent magnet 105a.
- the upper portion of the second inner yoke 106b is connected to the N pole of the second permanent magnet 105b.
- the directions of the magnetic poles of the first permanent magnet 105a and the second permanent magnet 105b may be reversed.
- the upper portion of the first inner yoke 106a may be connected to the S pole of the first permanent magnet 105a
- the upper portion of the second inner yoke 106b may be connected to the S pole of the second permanent magnet 105b.
- the first outer yoke 104a is disposed above the first permanent magnet 105a, and one end of the first outer yoke 104a is connected to the S pole of the first permanent magnet 105a. The other end of the first outer yoke 104a is located near the first fixed contact 8a and the first movable contact 9a.
- the second outer yoke 104b is disposed above the second permanent magnet 105b, and one end of the second outer yoke 104b is connected to the S pole of the second permanent magnet 105b. The other end of the second outer yoke 104b is located near the second fixed contact 8b and the second movable contact 9b.
- the first permanent magnet 105a may be connected to the upper portion of the first outer yoke 104a, and the first inner yoke 106a may be connected to the upper portion of the first permanent magnet 105a.
- the second permanent magnet 105b may be connected to the upper portion of the second outer yoke 104b, and the second inner yoke 106b may be connected to the upper portion of the second permanent magnet 105b.
- the width of each of the first inner yoke 106a and the second inner yoke 106b is the width of the first outer yoke 104a and the second outer yoke 104b when viewed from the direction along the extending direction of the movable contact 10. Greater than the width of each.
- the movable contact 10 is moved in the extending direction of the movable contact 10 after the driving force is applied to the arc in one of the width directions.
- the arc can be stretched longer because it can effectively act in the direction away from. Thereby, the arc-extinguishing performance of the switch 100 can be further enhanced.
- each of the first inner yoke 106a and the second inner yoke 106b can be easily formed, each of the first inner yoke 106a and the second inner yoke 106b can be made smaller. As a result, it is possible to miniaturize each of the first phase arc extinguishing chamber 2a and the second phase arc extinguishing chamber 2b.
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Abstract
Description
図1は、本発明の実施の形態1に係る開閉器の外観を示す正面図である。図2は、図1の開閉器をII-II線矢印方向から見た断面図である。図3は、本発明の実施の形態1に係る開閉器からアークカバーを取り外した状態を正面側から見た部分拡大図である。図4は、図3のIV-IV線矢印方向から見た断面図である。
開閉器1を閉極する際には、まず、操作コイル3が励磁される。操作コイル3が励磁されることにより、引き外しばね6の付勢力に反して、可動鉄心5が固定鉄心4に吸引される。これにより、可動鉄心5に固定された駆動軸11も固定鉄心4側に移動する。駆動軸11の移動に伴って可動接触子10も移動し、第1可動接点9aは第1固定接点8aに接触し、第2可動接点9bは第2固定接点8bに接触する。
以下、本発明の実施の形態2に係る開閉器について説明する。
以下、本発明の実施の形態3に係る開閉器について説明する。
以下、本発明の実施の形態4に係る開閉器について説明する。
以下、本発明の実施の形態5に係る開閉器について説明する。
以下、本発明の実施の形態6に係る開閉器について説明する。
以下、本発明の実施の形態7に係る開閉器について説明する。
以下、本発明の実施の形態8に係る開閉器について説明する。
以下、本発明の実施の形態9に係る開閉器について説明する。
以下、本発明の実施の形態10に係る開閉器について説明する。
なお、今回開示した上記実施の形態はすべての点で例示であって、限定的な解釈の根拠となるものではない。したがって、本発明の技術的範囲は、上記した実施の形態のみによって解釈されるものではない。また、請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。
Claims (14)
- 第1固定接点を有する第1固定接触子と、
前記第1固定接触子に隙間をあけて1列に並んで配置され、第2固定接点を有する第2固定接触子と、
前記第1固定接点と前記第2固定接点との側方に配置され、前記第1固定接点に対向する位置に設けられた第1可動接点を一端部に有し、前記第2固定接点に対向する位置に設けられた第2可動接点を他端部に有する、可動接触子と、
絶縁体で構成され、前記隙間を通るように配置され、前記可動接触子を前記側方に移動させる、駆動軸と、
磁性体で構成され、前記第1固定接点と前記第2固定接点とが並ぶ方向において前記可動接触子の前記一端部より外側の位置に一部が位置する第1外側ヨークと、
磁性体で構成され、前記並ぶ方向において前記可動接触子の前記他端部より外側の位置に一部が位置する第2外側ヨークと、
磁性体で構成され、前記第1固定接触子と前記駆動軸との間の位置に一部が位置する第1内側ヨークと、
磁性体で構成され、前記第2固定接触子と前記駆動軸との間の位置に一部が位置する第2内側ヨークと、
前記第1外側ヨークおよび前記第2外側ヨークの各々に、接続された永久磁石とを備え、
前記永久磁石は、前記第1外側ヨーク、前記第2外側ヨーク、前記第1内側ヨークおよび前記第2内側ヨークを磁気的に結合し、前記第1固定接点と前記第1可動接点との間、および、前記第2固定接点と前記第2可動接点との間、の各々において、前記並ぶ方向の磁界成分を発生させる、開閉器。 - 前記可動接触子は、前記並ぶ方向に延在しており、
前記第1可動接点は、前記第1固定接点に接離可能に設けられており、
前記第2可動接点は、前記第2固定接点に接離可能に設けられており、
前記駆動軸は、前記第1固定接点と前記第1可動接点とが互いに対向した状態を維持しつつ、かつ、前記第2固定接点と前記第2可動接点とが互いに対向した状態を維持しつつ、前記可動接触子を前記並ぶ方向に対して垂直な軸方向に移動させ、
前記永久磁石は、前記可動接触子に関して、前記軸方向において、前記第1固定接触子および前記第2固定接触子とは反対側の位置、または、前記第1固定接触子および前記第2固定接触子に関して、前記軸方向において、前記可動接触子とは反対側の位置、に設けられている、請求項1に記載の開閉器。 - 前記並ぶ方向から見て、前記第1固定接点と前記第1可動接点との間に、前記第1外側ヨークの一部および前記第1内側ヨークの一部が位置し、
前記並ぶ方向から見て、前記第2固定接点と前記第2可動接点との間に、前記第2外側ヨークの一部および前記第2内側ヨークの一部が位置している、請求項2に記載の開閉器。 - 前記並ぶ方向から見て、前記第1固定接点と前記第1可動接点との間において、前記第1外側ヨークの一部と前記第1内側ヨークの一部とが互いに対向し、
前記並ぶ方向から見て、前記第2固定接点と前記第2可動接点との間において、前記第2外側ヨークの一部と前記第2内側ヨークの一部とが互いに対向している、請求項3に記載の開閉器。 - 前記並ぶ方向および前記軸方向の各々に対して垂直な幅方向において、前記第1内側ヨークの外幅は、前記第1外側ヨークの外幅より大きく、
前記幅方向において、前記第2内側ヨークの外幅は、前記第2外側ヨークの外幅より大きい、請求項2から請求項4のいずれか1項に記載の開閉器。 - 前記第1内側ヨークは、前記並ぶ方向および前記軸方向の各々に対して垂直な幅方向における中央部に、前記軸方向に延びる切欠部が設けられており、
前記第2内側ヨークは、前記幅方向における中央部に、前記軸方向に延びる切欠部が設けられている、請求項2から請求項5のいずれか1項に記載の開閉器。 - 前記永久磁石として、1つの永久磁石のみを備える、請求項1から請求項6のいずれか1項に記載の開閉器。
- 前記第1内側ヨークおよび前記第2内側ヨークが一体で構成されている、請求項1から請求項7のいずれか1項に記載の開閉器。
- 前記第1内側ヨークおよび前記第2内側ヨークの各々は、前記駆動軸に接続されている、請求項1から請求項8のいずれか1項に記載の開閉器。
- 前記第1内側ヨークおよび前記第2内側ヨークの各々は、前記永久磁石に接続されている、請求項1から請求項6のいずれか1項に記載の開閉器。
- 前記第1外側ヨークが、前記並ぶ方向および前記軸方向の各々に対して垂直な幅方向における前記第1固定接触子の中央部を貫通し、
前記第2外側ヨークが、前記幅方向における前記第2固定接触子の中央部を貫通している、請求項2から請求項6のいずれか1項に記載の開閉器。 - 前記第1外側ヨーク、前記第2外側ヨーク、前記第1内側ヨークおよび前記第2内側ヨークのうちの少なくとも1つは、絶縁被覆されている、請求項1から請求項11のいずれか1項に記載の開閉器。
- 前記第1固定接触子の前記中央部に、前記第1外側ヨークが貫通する、前記並ぶ方向に延在する長孔形状の貫通孔が設けられており、
前記第2固定接触子の前記中央部に、前記第2外側ヨークが貫通する、前記並ぶ方向に延在する長孔形状の貫通孔が設けられている、請求項11に記載の開閉器。 - 前記可動接触子は、前記並ぶ方向および前記軸方向の各々に対して垂直な幅方向に垂直な両側面の前記第1内側ヨークおよび前記第2内側ヨークの各々の前記切欠部に対応する位置に、前記軸方向に延在する凹部が設けられている、請求項6項に記載の開閉器。
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KR1020207001545A KR102290582B1 (ko) | 2017-07-26 | 2018-06-15 | 개폐기 |
US16/614,803 US11205546B2 (en) | 2017-07-26 | 2018-06-15 | Switch |
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CN110945615B (zh) | 2021-11-05 |
JPWO2019021673A1 (ja) | 2019-11-07 |
US20200203094A1 (en) | 2020-06-25 |
KR20200015774A (ko) | 2020-02-12 |
JP6599030B2 (ja) | 2019-10-30 |
KR102290582B1 (ko) | 2021-08-17 |
CN110945615A (zh) | 2020-03-31 |
US11205546B2 (en) | 2021-12-21 |
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