WO2014125549A1 - 回路遮断器及び回路遮断器の組立方法 - Google Patents

回路遮断器及び回路遮断器の組立方法 Download PDF

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Publication number
WO2014125549A1
WO2014125549A1 PCT/JP2013/007592 JP2013007592W WO2014125549A1 WO 2014125549 A1 WO2014125549 A1 WO 2014125549A1 JP 2013007592 W JP2013007592 W JP 2013007592W WO 2014125549 A1 WO2014125549 A1 WO 2014125549A1
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WO
WIPO (PCT)
Prior art keywords
button
trip
opening
closing mechanism
circuit breaker
Prior art date
Application number
PCT/JP2013/007592
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
佑高 佐藤
浜田　佳伸
洋平 細岡
Original Assignee
富士電機機器制御株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士電機機器制御株式会社 filed Critical 富士電機機器制御株式会社
Priority to CN201380052125.2A priority Critical patent/CN104756219B/zh
Publication of WO2014125549A1 publication Critical patent/WO2014125549A1/ja

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly

Definitions

  • the present invention relates to a circuit breaker and a circuit breaker assembling method for circuit breakers, circuit breakers and the like, and more particularly to the structure of a trip button provided in the circuit breaker.
  • FIG. 5 shows the inside of a circuit breaker provided with a trip button.
  • reference numeral 5 is a handle that allows manual operation of the circuit breaker
  • reference numeral 2 is a handle lever
  • reference numeral 3 is a latch mechanism that is connected to the handle lever 2 and is involved in the pulling operation
  • reference numeral 4 is The movable contact 4 having a movable contact 4A, which is rotatably connected via the latch mechanism 3 and the toggle link mechanism 5, is rotated around the pin 6A and is connected via the trip lever 7 when the overcurrent is tripped.
  • 8 is an open / close spring
  • 9 is an electromagnetic force generated in the electromagnetic trip portion 10 when an overcurrent occurs. This is an armature that is sucked by the arm and rotates the cross bar 6 in the direction of the arrow.
  • Reference numeral 11 denotes a fixed contact having a fixed contact 11A.
  • the housing 12 is provided with a trip button 13. By depressing the trip button 13 against the spring force of the coil spring 14, the engagement state between the latch mechanism 3 and the trip lever 7 is released, and the movable contact 4 is opened. It is tested whether the tripping operation is normal without flowing.
  • the circuit breaker of Patent Document 1 described above includes a stopper (not shown) that regulates the push-down position of the trip button 13 in the direction of pushing down the trip button 13 and a cylindrical spring guide 15 that holds the coil spring 14. It is formed so as to protrude from the inner wall of the housing 12, and the size of the stopper, the spring guide 15 and the stroke of the trip button 13 must be taken into consideration, so that the inner volume of the housing 12 must be designed large, and the size can be reduced. There is a problem in terms of.
  • an object of the present invention is to provide a circuit breaker and a circuit breaker assembling method that can be reduced in size while reducing the manufacturing cost even if a trip button is provided.
  • a circuit breaker includes a fixed contact provided with a fixed contact and a movable contact provided with a movable contact in contact with the fixed contact inside a housing. And an opening / closing mechanism connected to the movable contact, and a trip cross bar that causes the opening / closing mechanism to perform a trip operation by receiving a pressing operation, and a trip button is disposed on the outer surface of the housing,
  • the trip button includes a push button portion provided on a top portion of the button body and the trip cross bar provided on the button body.
  • An axis extends in a direction orthogonal to the push-in direction of the push button portion between the engagement portion engageable with the push button portion and the engagement portion of the button body.
  • a shaft portion provided, and the button body is rotated around the shaft portion by pressing the push button portion, and the engagement portion applies a pressing force to the trip cross bar,
  • the opening / closing mechanism includes a bearing hole that supports the shaft of the trip button.
  • the member for holding the trip button is not formed in the housing as in the conventional device, and the housing can be made a simple structure. Reduction can be achieved.
  • the trip button of the present invention is not connected to the casing and operates. Reliability is not reduced.
  • the shaft part of the trip button is a spring member that is elastically deformable, and the button main body is rotated when the push button part is pushed.
  • a return spring force acts to return the main body to its original position.
  • the shaft portion of the trip button also serves as a return spring, the number of parts can be reduced.
  • the circuit breaker according to an aspect of the present invention is a torsion spring in which a shaft portion of the trip button is bent in a substantially U shape and includes a pair of parallel wires, and the torsion spring includes: The other wire rod is inserted into the bearing hole of the opening / closing mechanism portion.
  • the torsion spring can act on the return spring force while supporting the trip button.
  • a circuit breaker assembly method includes a fixed contact provided with a fixed contact, a movable contact provided with a movable contact contacting the fixed contact, An opening / closing mechanism connected to the movable contact and a trip cross bar that causes the opening / closing mechanism to perform a trip operation by receiving a pressing operation are mounted, and a trip button is disposed on the outer surface of the casing.
  • the trip button is assembled to the opening / closing mechanism portion, and the trip button includes a push button portion provided on a top portion of the button body.
  • a shaft insertion hole provided with an axial line extending in a direction orthogonal to the pushing direction of the tongue portion, and the opening / closing mechanism portion includes a pair of side plates and a top plate positioned above the pair of side plates.
  • the one side plate is provided with a bearing hole penetrating in the plate thickness direction, and after arranging the trip button so that the shaft insertion hole corresponds to the bearing hole of the side plate, a substantially U shape A torsion spring having a pair of wires that are bent in parallel with each other, one wire is locked to a part of the top plate, and the other wire is the bearing hole of the side plate and the trip button It is inserted into the shaft insertion hole and attached.
  • the trip button can be easily assembled to the opening / closing mechanism portion using a substantially U-shaped torsion spring without using a tool such as a screwdriver.
  • circuit breaker and the circuit breaker assembly method according to the present invention it is possible to reduce the size while reducing the manufacturing cost and the number of parts.
  • FIG. 1 is a perspective view showing a main part of a circuit breaker for three-pole wiring according to the present invention, showing an opening / closing mechanism unit 20, a trip crossbar 21, and a trip button 22 mounted in a housing 12.
  • Is. 2 is a view showing the main part of FIG. 1 from the side
  • FIG. 3 shows the assembly of the trip button 22 to the opening / closing mechanism 20
  • FIG. 4 shows the structure of the trip button 22 and It is a figure which shows pushing operation.
  • the opening / closing mechanism unit 20 includes a latch mechanism 3 and a toggle link mechanism 5 (see FIG. 5) that are connected to the handle lever 2 and are involved in the pulling operation.
  • a pair of side plates 23a and 23b arranged in parallel to each other and a top plate 24 connected to the upper part of the pair of side plates 23a and 23b are arranged around the periphery.
  • the top plate 24 has an opening 24a.
  • the opening 24a extends so as to form an L shape continuously with a long opening extending toward the pair of side plates 23a and 23b and the side of the long opening toward the side plate 23a. And a short opening.
  • a bearing hole 25 is formed through the side plate 23a near the short opening of the opening 24a of the top plate 24 in the thickness direction.
  • the trip cross bar 21 is a member in which trip portions 21b are integrally formed at three positions in the longitudinal direction of the bar main body 21a, and as shown in FIG. 1, the shaft portion is rotatable around the hole 23c. It is supported between the pair of side plates 23a and 23b.
  • reference numeral 21 c indicates the position of the shaft portion of the trip cross bar 21 described above. As shown in FIG.
  • the trip button 22 includes a button main body 22a, a push button portion 22b provided at the top of the button main body 22a, an engagement convex portion 22c provided at the lower portion of the button main body 22a, and a push button portion 22b. And a shaft insertion hole 22d provided penetrating in the thickness direction between the engaging convex portions 22c.
  • the trip button 22 is disposed on the lower surface side of the top plate 24, and the shaft insertion hole 22d is made to correspond to the bearing hole 25 of the side plate 23a, and the bearing hole 25 and the shaft insertion hole 22d are in correspondence with each other.
  • a torsion spring 26 is inserted.
  • the torsion spring 26 is an elastic member including a pair of wire rods 26 a and 26 b that are bent in a substantially U shape and are parallel to each other.
  • One wire rod 26a of the torsion spring 26 is a member inserted into the bearing hole 25 and the shaft insertion hole 22d, and the other wire rod 26b extends along the opening edge of the opening 24a as shown in FIG.
  • the end portion 26 b 1 extends and is engaged with the upper surface of the top plate 24.
  • the trip button 22 supported by the opening / closing mechanism 20 (side plate 23a and top plate 24) via the torsion spring 26 has a button hole provided in the housing 12, as shown in FIG.
  • a push button portion 22 b projects from 12 a to the outside, and is arranged in the housing 12 with the engagement convex portion 22 c facing the trip portion 21 b of the trip crossbar 21.
  • the engaging convex portion 22c is located below the shaft insertion hole 22d, and the push button portion 22b is located above the shaft insertion hole 22d.
  • the trip button 22 in which the engaging convex portion 22c and the push button portion 22b are arranged on the left and right with respect to the shaft insertion hole 22d causes the shaft insertion hole 22d to move when a downward pushing force is applied to the push button portion 22b. It is converted into rotation of the button body 22a with the center.
  • the torsion spring 26 when a pushing force is applied to the push button portion 22b, the torsion spring 26 has one wire rod 26a inserted through the bearing hole 25 and the shaft insertion hole 22d, and an opening 24a.
  • the other wire rod 26b extending along the opening edge of the top plate 24 and having the end portion 26b1 hooked and engaged with the upper surface of the top plate 24 undergoes torsional deformation so that the distance between the two wire rods 26b increases.
  • the button main body 22a rotates around the shaft insertion hole 22d while moving downward, and the engagement convex portion 22c applies a pressing force to the trip portion 21b of the trip crossbar 21.
  • the trip crossbar 21 rotates in the direction of the arrow about the shaft 21 c, thereby opening the movable contact 4 by the latch mechanism 3 and the toggle link mechanism 5 of the opening / closing mechanism 20.
  • the torsion spring 26 performing the torsional deformation generates a return spring force for returning to the original shape in which the pair of wires 26a and 26b are parallel to each other. Acts on 22a (returning spring force indicated by the arrow direction of S).
  • the trip button 22 to which the return spring force S of the torsion spring 26 is applied moves to the original position in FIG.
  • the engaging portion according to the present invention corresponds to the engaging convex portion 22 c
  • the shaft portion according to the present invention corresponds to the wire material 26 a of the torsion spring 26.
  • the procedure for assembling the trip button 22 on the side plate 23a and the top plate 24 arranged around the opening / closing mechanism 20 will be described with reference to FIG.
  • the trip button 22 is raised from the lower surface side of the top plate 24, and the trip button 22 is moved until the upper part of the button body 22 a is positioned at the opening 24 a of the top plate 24.
  • the shaft insertion hole 22d of the trip button 22 is made to correspond to the bearing hole 25 of the side plate 23a.
  • the torsion spring 26 is moved toward the upper part of the side plate 23a, and one wire rod 26a is inserted into the bearing hole 25 and the shaft insertion hole 22d, and the other wire rod is inserted.
  • 26 b extends along the opening edge of the opening 24 a, and its end 26 b 1 is hooked and engaged with the upper surface of the top plate 24. Thereby, the assembly of the trip button 22 to the side plate 23a and the top plate 24 is completed.
  • the members that support the trip button 22 are the side plates 23a and 23b and the top plate 24 of the opening / closing mechanism unit 20, and the member that holds the trip button as in the conventional device is the housing 12. Since the housing 12 can have a simple structure, the manufacturing cost can be reduced. Further, even when the casing 12 to which the plurality of divided bodies are connected via the connecting screw is deformed due to the influence of the tightening force such as the connecting screw, the trip button 22 of the present embodiment is not connected to the casing 12. However, since it is supported by the side plates 23a and 23b and the top plate 24 of the opening / closing mechanism 20, the operational reliability is not lowered.
  • the trip button 22 is a mechanism that rotates around a shaft insertion hole 22d provided substantially at the center of the button body 22a. Since the operation stroke of the trip button 22 is small, the circuit breaker can be downsized. it can.
  • a member that rotatably supports the trip button 22 on the side plate 23a and the top plate 24 is a torsion spring 26.
  • the torsion spring 26 is a return for returning the pushed trip button 22 to its original position. Since the spring force S acts to support the trip button 22 and the function as a return spring member, an increase in the number of parts can be suppressed.
  • the trip button 22 is disposed on the lower surface side of the top plate 24, and then the trip button is inserted into the bearing hole 25 of the side plate 23a.
  • 22 shaft insertion holes 22d are made to correspond to each other, and then one wire rod 26a of the substantially U-shaped torsion spring 26 is inserted into the bearing hole 25 and the shaft insertion hole 22d, and the other wire rod 26b of the torsion spring 26 is opened.
  • Assembling of the trip button 22 is completed by extending along the opening edge of 24 a and engaging the end 26 b 1 with the upper surface of the top plate 24. In this way, the trip button 22 can be easily assembled to the side plate 23 a and the top plate 24 using the substantially U-shaped torsion spring 26 without using a tool such as a screwdriver.
  • circuit breaker and the circuit breaker assembly method according to the present invention are useful for reducing the manufacturing cost while reducing the manufacturing cost even if the trip button is provided.

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PCT/JP2013/007592 2013-02-14 2013-12-25 回路遮断器及び回路遮断器の組立方法 WO2014125549A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201380052125.2A CN104756219B (zh) 2013-02-14 2013-12-25 电路断路器和电路断路器的组装方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-026627 2013-02-14
JP2013026627A JP6020236B2 (ja) 2013-02-14 2013-02-14 回路遮断器及び回路遮断器の組立方法

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WO2014125549A1 true WO2014125549A1 (ja) 2014-08-21

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Application Number Title Priority Date Filing Date
PCT/JP2013/007592 WO2014125549A1 (ja) 2013-02-14 2013-12-25 回路遮断器及び回路遮断器の組立方法

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JP (1) JP6020236B2 (zh)
CN (1) CN104756219B (zh)
WO (1) WO2014125549A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102275002B1 (ko) * 2019-11-12 2021-07-08 엘에스일렉트릭(주) 트립 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61153944U (zh) * 1985-03-18 1986-09-24
JP2001325873A (ja) * 2000-05-16 2001-11-22 Kawamura Electric Inc 漏電遮断器のテストボタン
JP3096829U (ja) * 2002-04-01 2004-01-08 エルジー産電株式会社 回路遮断器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102194619B (zh) * 2010-03-16 2014-08-13 施耐德电器工业公司 用于断路器的试验装置及具有该试验装置的断路器
CN201673872U (zh) * 2010-05-13 2010-12-15 上海华联低压电器有限公司 塑料外壳式低压断路器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61153944U (zh) * 1985-03-18 1986-09-24
JP2001325873A (ja) * 2000-05-16 2001-11-22 Kawamura Electric Inc 漏電遮断器のテストボタン
JP3096829U (ja) * 2002-04-01 2004-01-08 エルジー産電株式会社 回路遮断器

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JP6020236B2 (ja) 2016-11-02
CN104756219A (zh) 2015-07-01
CN104756219B (zh) 2017-03-01
JP2014157665A (ja) 2014-08-28

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