WO2017216845A1 - Contact switch - Google Patents
Contact switch Download PDFInfo
- Publication number
- WO2017216845A1 WO2017216845A1 PCT/JP2016/067544 JP2016067544W WO2017216845A1 WO 2017216845 A1 WO2017216845 A1 WO 2017216845A1 JP 2016067544 W JP2016067544 W JP 2016067544W WO 2017216845 A1 WO2017216845 A1 WO 2017216845A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- fixed contact
- plate
- arc
- grid
- Prior art date
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Classifications
-
- 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
-
- 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
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H33/10—Metal parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Definitions
- the present invention relates to a contact switch capable of interrupting current.
- a contact switch is known in which, when energized and these contacts are separated, the circuit is opened and current is interrupted.
- Patent Document 1 which is a prior art, aims to obtain a switch with a long switching life, and a fixed contact joined to a fixed contact, and a movable contact joined to a movable contact that contacts or leaves the fixed contact.
- a magnetic arc extinguishing plate provided so as to stand in a direction away from the movable contact, and the metal arc extinguishing plate is a switch provided with a plurality of peaks at the side ends of the fixed contact When the movable contact is fully opened, the movable contact and the metal arc extinguishing plate face each other, the height of the two peaks at the center is greater than the height of the peaks at both ends, and the two peaks at the center.
- a switch is disclosed in which the center-to-center distance is equal to the width of the movable contact.
- the arc is driven between the two peak portions at the center and the edge of the notch portion of the arc runner, and the edges of the peak portion and the notch portion are gradually damaged. End up. Therefore, there is a problem that the stable current interruption performance cannot be obtained as the opening and closing are repeated.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a contact switch capable of maintaining stable current interrupting performance even when repeated opening and closing.
- the present invention provides a fixed contact, a fixed contact provided on the fixed contact, a movable contacted to or away from the fixed contact.
- An arc runner in which the stationary contact is disposed inside the notch, the arc runner having an edge at an outer edge and an inner edge formed by the notch, and the plate-like member is The plate-like member having the same number or more of the convex portions as the edge of the arc runner and present at the position closest to the fixed contact includes the plurality of convex portions and the edge closest to each of the convex portions.
- the contact switch according to the present invention has an effect that stable current interruption performance can be maintained even if opening and closing is repeated.
- FIG. 1 The perspective view which shows the contact switch which concerns on Embodiment 1.
- FIG. 2 The top view which observed the contact switch shown in FIG. 1 from the direction of a white arrow.
- FIG. 2 is a cross-sectional view taken along line III-III in FIG.
- FIG. 1 The top view which observed the contact switch shown in FIG. 1 from the direction of a white arrow.
- FIG. 2 is a cross-sectional view taken along line III-III in FIG.
- FIG. 1 is a perspective view showing a contact switch 10 according to Embodiment 1 of the present invention.
- a contact switch 10 shown in FIG. 1 includes a fixed contact 1, a fixed contact 2 provided on the fixed contact 1, a movable contact 3 that faces the fixed contact 2 and contacts or leaves the fixed contact 2, and a movable contact 3 and a magnetic grid 5 provided with a plurality of plate-like members 5_1, 5_2, 5_3, 5_4, and 5_5 in a direction in which the movable contact 3 is separated from the fixed contact 2.
- the arc runner 6 facing the grid 5 and having the fixed contact 1 disposed inside the notch 6 ⁇ / b> A and the crossbar 7 having the movable contact 4 are provided.
- the fixed contact 2 may be provided by being joined to the fixed contact 1
- the movable contact 3 may be provided by being joined to the movable contact 4.
- the grid 5 shown in FIG. 1 is provided by five plate-like members, the number of plate-like members is not particularly limited.
- FIG. 2 is a plan view of the contact switch 10 shown in FIG. 1 observed from the direction of a white arrow.
- the plate-like members 5_1, 5_2, 5_3, 5_4, and 5_5 forming the grid 5 are arranged in this order from the inside to the outside in the contact switch 10.
- FIG. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 3 shows the positional relationship between the plate-like member 5_1 closest to the movable contact 3 and the arc runner 6.
- the plate-like member 5_1 shown in FIG. 3 has convex portions 5C and 5D at the center, and convex portions 5B and 5E at both ends.
- the number of convex portions 5B, 5C, 5D, 5E of the plate-like member 5_1 is four, and the edge 6B on the plate-like member 5_1 side provided on the outer edge of the arc runner 6 and the inner edge formed by the notch portion.
- 6C, 6D, 6E are four, and they are the same number.
- the distance W1, the distance W2, the distance W3, and the distance W4 are equal.
- the distance W1 shown in FIG. 3 is a distance between the convex part 5B of the plate-like member 5_1 and the edge 6B of the arc runner 6 existing at a position closest to the convex part 5B.
- the distance W2 is a distance between the convex part 5C of the plate-like member 5_1 and the edge 6C of the arc runner 6 existing at a position closest to the convex part 5C.
- the distance W3 is a distance between the convex portion 5D of the plate-like member 5_1 and the edge 6D of the arc runner 6 existing at a position closest to the convex portion 5D.
- the distance W4 is a distance between the convex portion 5E of the plate-like member 5_1 and the edge 6E of the arc runner 6 existing at a position closest to the convex portion 5E.
- the convex portions 5B, 5C, 5D, and 5E are formed to have the same height.
- the distance between the convex part 5B and the edge 6B closest to the convex part 5B is equal, and the convex part 5C and the edge 6C closest to the convex part 5C
- the distance is equal, the distance between the convex part 5D and the edge 6D closest to the convex part 5D is equal, and the distance between the convex part 5E and the edge 6E closest to the convex part 5E is equal.
- the projections 5B, 5C, the plate-like member 5_1 present at the position closest to the fixed contact 2 and the movable contact 3 is equal to or more than the number of edges 6B, 6C, 6D, 6E including the outer edge of the arc runner 6. 5D, 5E, and when the distances between the respective convex portions of the plate-like member 5_1 of the grid 5 and the edge of the arc runner 6 existing at the closest position to these convex portions are all equal, the generated arc is Between the convex portions 5B, 5C, 5D, and 5E of the plate-like member 5_1 and the edges 6B, 6C, 6D, and 6E of the arc runner 6 can be driven with equal probability.
- the movable contact 4 is supported by the cross bar 7 so that it can be displaced in the direction of the arrow.
- the cross bar 7 has a degree of freedom in a direction away from the fixed contact 1 and is movable.
- the movable contact 4 is displaceable from the position where the movable contact 3 and the fixed contact 2 are in contact to the tip of the convex portion of the grid 5 closest to the contact.
- a circuit (not shown) connected to the movable contact 3 and the fixed contact 2 enters a closed state and is energized. And if the movable contact 3 and the fixed contact 2 leave
- FIG. 4 is a perspective view showing a contact switch 10a of a comparative example.
- the contact switch 10a shown in FIG. 4 has a grid structure different from that of the contact switch 10 shown in FIG. 1, and is opposed to the fixed contact 1, the fixed contact 2 provided on the fixed contact 1, and the fixed contact 2.
- a movable contact 3 that contacts or leaves the fixed contact 2 a movable contact 4 provided with the movable contact 3, and a plurality of plate-like members 5a_1, 5a_2, 5a_3, 5a_4 in a direction in which the movable contact 3 separates from the fixed contact 2.
- 5a_5 standing upright, a grid 5a made of a magnetic material, an arc runner 6 facing the grid 5a and having the fixed contact 1 disposed inside the notch 6A, and a crossbar having a movable contact 4 7.
- the grid 5a is provided with a plurality of convex portions, and the two convex portions 5A1 at the center are formed closer to the fixed contact 2 than the convex portions 5A2 provided at both ends.
- FIG. 5 is a cross-sectional view taken along line VV in FIG.
- FIG. 5 shows how the arc is driven in the arc extinguishing chamber.
- a dotted line 8 in FIG. 5 indicates the movable contact 4 and the movable contact 3 in the middle of displacement from the state in which the movable contact 3 and the fixed contact 2 are contacted to the state in which the movable contact 3 and the fixed contact 2 are separated from each other.
- arcs 9A, 9B, 9C, and 9D indicated by dotted lines schematically show the driven arc.
- the arc 9A is an arc generated immediately after the fixed contact 2 and the movable contact 3 are separated from each other in the energized state.
- the arc 9A is attracted by the grid 5a and the arc runner 6, reaches the arc runner 6 from the movable contact 4 through the tip of the grid 5a, and is driven to the position of the arc 9B.
- the arc 9B is driven to the position of the arc 9C.
- the arc 9C is further driven to become an arc 9D, and finally reaches the position of the arc 9D and is divided and cooled by the grid 5a, thereby interrupting the current.
- an arc is generated each time the movable contact 3 and the fixed contact 2 are opened and closed, and the grid 5a and the arc runner 6 are melted, evaporated or deformed to cause damage.
- the drive from the arc 9A to the arc 9D described above is not smooth, arc sticking occurs, and the current cannot be cut off. That is, in the comparative example, when the number of times of opening and closing increases, stable current interruption performance cannot be maintained.
- the arc is driven by the two convex portions 5A1 and 5A2 present at the center of the grid 5a.
- the arc can be dispersed by the four convex portions 5B, 5C, 5D, and 5E.
- the ratio of the arcs contracted by the projections 5B, 5C, 5D, 5E of the plate-like member of the grid 5 and the edges 6B, 6C, 6D, 6E of the arc runner 6 with respect to the number of opening / closing operations is reduced, the grid 5 and Damage to the arc runner 6 is suppressed.
- the contact switch 10 can maintain stable current interruption performance even when the number of switching operations is large. Moreover, the contact switch 10 can also suppress damage to a cover (not shown) that covers the entire arc extinguishing chamber, which exists near the convex portions 5B and 5E at both ends of the grid 5, by dispersing the arc.
- FIG. FIG. 6 is a perspective view showing a contact switch 10b according to Embodiment 2 of the present invention.
- the width W5 of the notch 6B1 of the arc runner 6b is constant, and each of the plate-like members 5b_1, 5b_2, 5b_3, 5b_4, 5b_5 of the grid 5b has a plurality of protrusions.
- the distances between the portions 5bB, 5bC, 5bD, and 5bE and the edges 6bB, 6bC, 6bD, and 6bE of the nearest arc runner 6b facing each convex portion are equal.
- the generated arc is generated by the projections 5bB, 5bC, 5bD, 5bE of all the plate-like members 5b_1, 5b_2, 5b_3, 5b_4, 5b_5 of the grid 5b and the edges 6bB, 6bC, 6bD, 6bE of the arc runner 6b.
- it is driven evenly in a stochastic manner, and the dispersion of the arc can be further promoted than in the first embodiment.
- the arc dispersion can be further promoted than in the first embodiment, and the stable current interruption performance can be maintained for a longer period even when the number of switching operations is large.
- FIG. 7 is a perspective view showing a contact switch 10c according to Embodiment 3 of the present invention.
- the arc runner 6c includes a portion adjacent to the movable contact 4 and the fixed contact 1 and a portion facing the grid 5c, and the arc runner 6c in the portion facing the grid 5c.
- the width W6 of the notch 6C1 is constant, and the width W7 of the notch 6C2 of the arc runner 6 adjacent to the fixed contact 2 is also constant.
- the width W6 is smaller than the width W7, and is such a dimension that the movable contact 4 and the arc runner 6c do not interfere even when the movable contact 4 is displaced to be in a closed state.
- the plate-like member arranged at a position far from the fixed contact 2 is arranged so as to be closer to the facing arc runner 6c. That is, among the plate-like members 5c_1, 5c_2, 5c_3, 5c_4, and 5c_5, the plate-like member 5c_5 is disposed closest to the opposing arc runner 6c. In other words, the plate-like members 5c_1, 5c_2, 5c_3, 5c_4, and 5c_5 of the grid 5c are arranged so as to be closer to the arc runner 6c that faces the outer side. Moreover, each convex part 5cB, 5cC, 5cD, 5cE of the grid 5c is arrange
- the arc can be easily driven and the outer dimensions of the grid 5c are set. It can be made smaller than the grid 5 of the first form.
- the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
Description
図1は、本発明の実施の形態1に係る接点開閉器10を示す斜視図である。図1に示す接点開閉器10は、固定接触子1と、固定接触子1に設けられた固定接点2と、固定接点2と対向し、固定接点2と接し又は離れる可動接点3と、可動接点3が設けられた可動接触子4と、可動接点3が固定接点2から離れる方向に複数枚の板状部材5_1,5_2,5_3,5_4,5_5を立てて設けられた磁性体製のグリッド5と、グリッド5と対向し、切欠き部6Aの内側に固定接触子1が配置されるアークランナー6と、可動接触子4を有するクロスバー7とを備える。なお、一例として、固定接点2は固定接触子1に接合されて設けられていればよく、可動接点3は可動接触子4に接合されて設けられていればよい。また、図1に示すグリッド5は5枚の板状部材により設けられているが、板状部材の枚数は特に限定されるものではない。
FIG. 1 is a perspective view showing a
図6は、本発明の実施の形態2に係る接点開閉器10bを示す斜視図である。図6に示す接点開閉器10bでは、アークランナー6bの切欠き部6B1の幅W5が一定であり、グリッド5bのすべての板状部材5b_1,5b_2,5b_3,5b_4,5b_5について、各々の複数の凸部5bB,5bC,5bD,5bEと各凸部に対向する最も近いアークランナー6bのエッジ6bB,6bC,6bD,6bEとの距離が等しい。そのため、発生したアークは、グリッド5bのすべての板状部材5b_1,5b_2,5b_3,5b_4,5b_5の各凸部5bB,5bC,5bD,5bEとアークランナー6bの各エッジ6bB,6bC,6bD,6bEとの間に、確率的に均等に駆動され、アークの分散を実施の形態1よりも更に促進することができる。
FIG. 6 is a perspective view showing a
図7は、本発明の実施の形態3に係る接点開閉器10cを示す斜視図である。図7では、説明のためにクロスバー7の図示を省略している。図7に示す接点開閉器10cでは、アークランナー6cが、可動接触子4及び固定接触子1に隣接する部分とグリッド5cと対向する部分とを含み、グリッド5cと対向する部分におけるアークランナー6cの切欠き部6C1の幅W6は一定であり、固定接点2に隣接するアークランナー6の切欠き部6C2の幅W7も一定である。そして、幅W6は、幅W7よりも小さく、可動接触子4が変位して閉路状態となった場合にも可動接触子4とアークランナー6cとが干渉しない寸法である。
FIG. 7 is a perspective view showing a
Claims (4)
- 固定接触子と、
前記固定接触子に設けられた固定接点と、
前記固定接点と対向し、前記固定接点と接し又は離れる可動接点と、
前記可動接点が設けられた可動接触子と、
前記可動接点が前記固定接点から離れる方向に複数枚の板状部材を立てて設けられた磁性体製のグリッドと、
前記グリッドと対向し、切欠き部の内側に前記固定接触子が配置されるアークランナーとを備え、
前記アークランナーは、外縁及び前記切欠き部によって形成される内縁にエッジを有し、
前記板状部材は、前記アークランナーの前記エッジと同数以上の凸部を有し、
前記固定接点に最も近い位置に存在する前記板状部材は、複数の前記凸部の各々と前記凸部の各々に最も近い前記エッジとの距離が、すべて等しいことを特徴とする接点開閉器。 A stationary contact;
A fixed contact provided on the fixed contact;
A movable contact facing the fixed contact and contacting or leaving the fixed contact;
A movable contact provided with the movable contact;
A grid made of a magnetic material provided with a plurality of plate-like members standing in a direction in which the movable contact is away from the fixed contact;
An arc runner that faces the grid and has the fixed contact disposed inside the notch,
The arc runner has an edge on an outer edge and an inner edge formed by the notch,
The plate-like member has the same or more convex portions as the edges of the arc runner,
The contact switch according to claim 1, wherein the plate-like member present at a position closest to the fixed contact has the same distance between each of the plurality of convex portions and the edge closest to each of the convex portions. - 前記グリッドにおいて前記板状部材の前記凸部と、前記凸部と対向する前記アークランナーの前記エッジとの距離は、すべて等しいことを特徴とする請求項1に記載の接点開閉器。 2. The contact switch according to claim 1, wherein in the grid, all the distances between the convex portion of the plate-like member and the edge of the arc runner facing the convex portion are equal.
- 前記アークランナーは、
前記可動接触子及び前記固定接触子に隣接する部分では、前記可動接触子と前記アークランナーとが干渉しない寸法であり、
前記グリッドと対向する部分では、幅が一定であることを特徴とする請求項1に記載の接点開閉器。 The arc runner
In the portion adjacent to the movable contact and the fixed contact, the movable contact and the arc runner are dimensions that do not interfere with each other.
The contact switch according to claim 1, wherein a width of the portion facing the grid is constant. - 前記固定接点から遠い位置に配置された前記板状部材ほど前記アークランナーに近くなるように配置されていることを特徴とする請求項3に記載の接点開閉器。 4. The contact switch according to claim 3, wherein the plate-like member arranged farther from the fixed contact is arranged so as to be closer to the arc runner.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680086549.4A CN109314003B (en) | 2016-06-13 | 2016-06-13 | Contact switch |
JP2017561989A JP6293397B1 (en) | 2016-06-13 | 2016-06-13 | Contact switch |
PCT/JP2016/067544 WO2017216845A1 (en) | 2016-06-13 | 2016-06-13 | Contact switch |
KR1020187031399A KR101999498B1 (en) | 2016-06-13 | 2016-06-13 | Contact Switches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2016/067544 WO2017216845A1 (en) | 2016-06-13 | 2016-06-13 | Contact switch |
Publications (1)
Publication Number | Publication Date |
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WO2017216845A1 true WO2017216845A1 (en) | 2017-12-21 |
Family
ID=60664506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2016/067544 WO2017216845A1 (en) | 2016-06-13 | 2016-06-13 | Contact switch |
Country Status (4)
Country | Link |
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JP (1) | JP6293397B1 (en) |
KR (1) | KR101999498B1 (en) |
CN (1) | CN109314003B (en) |
WO (1) | WO2017216845A1 (en) |
Families Citing this family (1)
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CN111564339B (en) * | 2020-06-19 | 2022-06-10 | 哈尔滨工业大学 | Miniature sealed electromagnetic relay bottom plate underlying arc extinguishing structure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61220215A (en) * | 1985-03-26 | 1986-09-30 | 三菱電機株式会社 | Switch |
JPH11242924A (en) * | 1997-12-26 | 1999-09-07 | Mitsubishi Electric Corp | Arc-extinguishing device for contact switching equipment |
JPH11353968A (en) * | 1998-06-09 | 1999-12-24 | Mitsubishi Electric Corp | Switch |
JP2001283668A (en) * | 2000-04-04 | 2001-10-12 | Mitsubishi Electric Corp | Switch |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7835288U1 (en) * | 1978-11-28 | 1979-03-01 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Arc extinguishing device for DC switching devices |
KR880001427Y1 (en) * | 1981-08-13 | 1988-04-15 | 미쓰비시전기 주식회사 | Electromagnetic switchgear |
US5866864A (en) * | 1997-07-14 | 1999-02-02 | Eaton Corporation | Electric current switching apparatus with arc spinning extinguisher |
KR100386629B1 (en) * | 2000-10-28 | 2003-06-02 | 엘지산전 주식회사 | Are extinguishing device in circuit breaker |
US9196433B2 (en) * | 2012-05-17 | 2015-11-24 | Mitsubishi Electric Corporation | Electromagnetic switch |
-
2016
- 2016-06-13 WO PCT/JP2016/067544 patent/WO2017216845A1/en active Application Filing
- 2016-06-13 CN CN201680086549.4A patent/CN109314003B/en not_active Expired - Fee Related
- 2016-06-13 JP JP2017561989A patent/JP6293397B1/en not_active Expired - Fee Related
- 2016-06-13 KR KR1020187031399A patent/KR101999498B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61220215A (en) * | 1985-03-26 | 1986-09-30 | 三菱電機株式会社 | Switch |
JPH11242924A (en) * | 1997-12-26 | 1999-09-07 | Mitsubishi Electric Corp | Arc-extinguishing device for contact switching equipment |
JPH11353968A (en) * | 1998-06-09 | 1999-12-24 | Mitsubishi Electric Corp | Switch |
JP2001283668A (en) * | 2000-04-04 | 2001-10-12 | Mitsubishi Electric Corp | Switch |
Also Published As
Publication number | Publication date |
---|---|
JP6293397B1 (en) | 2018-03-14 |
KR101999498B1 (en) | 2019-07-11 |
JPWO2017216845A1 (en) | 2018-06-28 |
CN109314003B (en) | 2020-01-24 |
KR20180122473A (en) | 2018-11-12 |
CN109314003A (en) | 2019-02-05 |
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