CN1271661C - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN1271661C CN1271661C CNB031331920A CN03133192A CN1271661C CN 1271661 C CN1271661 C CN 1271661C CN B031331920 A CNB031331920 A CN B031331920A CN 03133192 A CN03133192 A CN 03133192A CN 1271661 C CN1271661 C CN 1271661C
- Authority
- CN
- China
- Prior art keywords
- insulation board
- outside terminal
- circuit breaker
- insulation
- accommodating groove
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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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
- H01H71/02—Housings; Casings; Bases; Mountings
-
- 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
- H01H71/08—Terminals; Connections
Landscapes
- Breakers (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Distribution Board (AREA)
Abstract
In the circuit breaker for interrupting the conduction of an electric path when an overcurrent is detected, the insulating barrier (9) for enhancing insulation between external terminals is provided between the external terminals (3, 4). The insulating barrier (9) is adjustable in length drawn out along the terminals (3, 4). The insulating barrier (9) is housed in a plurality of stages in a housing groove (11) formed at an attachment base (5) of the terminals (3, 4), so that a desired number of stages can be drawn out along the terminals (3, 4) when insulation is required. To provide a circuit breaker highly reliable in insulation between external terminals by allowing a required length of an insulating barrier attached between the external terminals drawn out to provide insulation having a required length suitable for individual cases.
Description
Technical field
The present invention relates to a kind of circuit breaker, relate in particular to the air circuit and the Inturruptor for sub-line that are provided with insulation board alternate.
Background technology
In traditional air circuit, for the short circuit accident that prevents between adjacent power supply side terminal and load side terminal (power supply side terminal and load side terminal are generically and collectively referred to as outside terminal) to cause, the externally alternate insulation board that is provided with of terminal because of foreign conducting matter or dust.Such as, disclosed general air circuit at patent documentation 1 (Japanese patent laid-open 10-74442 communique).
But, the insulation board of traditional circuit breaker, its length is certain, so exist because of the dish difference of circuit breaker is installed, its length is too short and can't implement the insulation of the safety of Len req, or oversize and problem such as can't use.
Summary of the invention
The present invention carries out in order to address the above problem, and its purpose is to provide a kind of energy will be arranged on the alternate insulation board of outside terminal and pulls out required length, is fit to the insulation of the Len req of various shells, obtains the high circuit breaker of phase insulation reliability.
Circuit breaker of the present invention, when detecting overcurrent, the energising of circuit is cut off, wherein, in being located at the alternate accommodating groove of described outside terminal, take in the insulation board that the insulation between outside terminal is strengthened, described insulation board is pulled out Len req from described accommodating groove along described outside terminal, and the described insulation board of scalable is along the length of pulling out of described outside terminal.
Description of drawings
Fig. 1 is the stereogram of the circuit breaker of expression example 1, is the state behind the housing insulation plate.
Fig. 2 is the stereogram of the circuit breaker of expression example 1, is the state of insulation board being pulled out one-level.
Fig. 3 is the stereogram of the circuit breaker of expression example 1, is the state of insulation board being pulled out secondary.
Fig. 4 is the left view of presentation graphs 3.
Fig. 5 is the cutaway view of the A-A line of presentation graphs 4.
Fig. 6 is the insulation board of expression example 1 and the local amplification view of accommodating groove thereof.
Fig. 7 is the stereogram of left mounting blocks of the mounting base of expression example 1.
Fig. 8 is the stereogram that fixing mounting base is taken in 1 of the power supply side terminal of example 1 and load side terminal in expression mutually.
To be expression carry out the stereogram of the mounting base after stacked with 3 of the power supply side terminal of example 1 and load side terminal to Fig. 9 mutually.
Figure 10 is the stereogram that insulation board is accommodated in the mounting blocks internal state of example 1.
Figure 11 is the exploded perspective view of taking in the mounting base behind the insulation board of example 1 and pulling out frame.
Figure 12 is the stereogram of the circuit breaker of expression example 3, is the state behind the housing insulation plate.
Figure 13 is the stereogram that the insulation board of expression Figure 12 is pulled out the back state.
Figure 14 is the stereogram of the insulation board dismounting back state of expression Figure 12.
Figure 15 is the stereogram of installation of the insulation board of expression example 3.
Figure 16 is the stereogram of the circuit breaker shown in the expression example 4.
Figure 17 is the stereogram of the circuit breaker of expression example 5.
Figure 18 is the exploded perspective view of the circuit breaker assembling of explanation Figure 17.
Figure 19 is the part figure that the explanation insulation board is accommodated in the circuit breaker accommodating groove internal state of Figure 17.
Embodiment
Example 1
Fig. 1 is the stereogram of the circuit breaker of expression example 1 of the present invention, is the state behind the housing insulation plate.Fig. 2 is the stereogram of the circuit breaker of expression example 1, is the state of insulation board being pulled out one-level.
Fig. 3 is the stereogram of the circuit breaker of expression example 1, is the state of insulation board being pulled out secondary.Fig. 4 is the left view of presentation graphs 3.Fig. 5 is the cutaway view of the A-A line of presentation graphs 4.
Among the figure, the inside of air circuit 1 has 1 pair of contact, and when detecting overcurrent, not shown switching mechanism moves, and cuts off the energising of circuit.The underrun screw of angle steel 6 etc. is fixed in and is arranged on the outside mounting panel etc.Angle steel 6 is installed in to constitute and pulls out in the side frame 7,8 of frame 2.Pull out frame 2 by being arranged on the pull out guide rail (not shown) of pulling out on the frame 2, circuit breaker can be passed in and out.In addition, at the occasion that can't be accommodated in the circuit breaker in the pulling off device (Figure 16,17 of example 4,5), do not need this to pull out frame 2.
2 sides of power supply side terminal 3 and transformer etc. are connected.Load side terminal 4 is connected with loads such as motors.Power supply side terminal 3 and power supply side terminal 4 are generically and collectively referred to as outside terminal.The supply lines of electric power, internal load side terminal → transfer terminal → external load side terminal 4 → motor such as the air circuit of the contact of the air circuit of the internal electric source side terminal of the air circuit of the transfer terminal of, 2 sides → external power source side terminal 3 of transformer → not shown → not shown → not shown → not shown.And the transfer terminal is connected external power source side terminal 3, external load side terminal 4 respectively with internal electric source side terminal, the internal load side terminal of air circuit.
On mounting base 5, form accommodating groove 11 (Fig. 5), when taking in insulation board 9, in order to strengthen the alternate insulation of outside terminal, insulation board 9 pulled out Len req along outside terminal after, remain secured to insulation board 9 alternate.Fig. 6 is the insulation board of expression example 1 and the local amplification view of accommodating groove thereof.The end that projection 12 is arranged on mounting base 5 reducing the outlet of accommodating groove 11, and engage with the protruding 9d of the 2nd grade of 9c root that is arranged on insulation board, thereby the root of the 2nd grade of 9c of prevention insulation board is pulled out from accommodating groove 11.Projection 9f is arranged on the leading section of the 2nd grade of 9c of insulation board with the outlet of the accommodating groove 9e of the 1st grade of 9a of the insulation board that reduces to form on the 2nd grade of 9c of insulation board, and in the protruding 9b engaging of the 1st grade of 9a root that is arranged on insulation board, thereby stop the root of the 1st grade of 9a of insulation board to be pulled out from accommodating groove 9e.The guiding groove 9g of the accommodating groove 9e that forms on the 2nd grade of 9c of insulation board is used to guide the taking in and pulling out of the 1st grade of 9a of insulation board.
Fig. 7 is the stereogram of the left mounting blocks of expression mounting base.Fig. 8 is the stereogram that fixing back mounting base is taken in 1 of power supply side terminal and load side terminal in expression mutually.Fig. 9 is the stereogram that the mounting base after stacked is carried out 3 of power supply side terminal and load side terminal in expression mutually.Figure 10 is the stereogram that insulation board is accommodated in the mounting blocks internal state.Figure 11 is the exploded perspective view of taking in the mounting base behind the insulation board and pulling out frame.
Assemble and made stacked mounting base mutually shown in Figure 93, at first power supply side terminal 3 and 4 insertions of load side terminal are fixed in left mounting blocks 5a shown in Figure 7, overlapping by left mounting blocks 5a and right mounting blocks 5b, form the state that surrounds power supply side terminal 3 and load side terminal 4.This state as shown in Figure 8.Equally, after the mounting base 5 of 3 phases assembled, carry out the mounting base of 3 phases stacked.This state as shown in Figure 9.
Assemble drawer type air circuit shown in Figure 1, with reference to Figure 11, insulation board 9 is inserted in 2 alternate accommodating grooves 11 (Fig. 5) of mounting blocks 5 from the base side of air circuit 1 (the opposite side of being protruded with power supply side terminal 3 and load side terminal 4 of a side), angle steel 6 is installed on top, the bottom of mounting base 5, under this state, fix by screw-driving from both sides by side frame (L) 7 and side frame (R) 8.Then, the not shown operating grip of mounting base 5 usefulness that side frame (L) 7 and side frame (R) 8 etc. will be installed is rotated, the body of air circuit 1 is accommodated in pulls out in the frame 2, simultaneously, the base side of the air circuit 1 of power supply side terminal 3 and load side terminal 4 is electrically connected with the internal electric source side terminal and the internal load side terminal of air circuit 1 respectively (such as can be with reference to patent documentation 2: No. 2900332 communique of patent).The base side of the air circuit 1 of accommodating groove 11 is stopped up by the insulating properties pedestal 20 of air circuit 1, the root of the 2nd grade of 9c of insulation board can not pushed too much the base side of air circuit 1.
Below, the action of the insulation board 9 of the air circuit of above structure is explained.By insulation board 9 is pulled out towards arrow (d) direction (Fig. 2) along power supply side terminal 3 and load side terminal 4, can strengthen the alternate insulation of outside terminal.By projection 12 engage with protruding 9d, protruding 9f engages with protruding 9b (Fig. 6), pulling out of insulation board 9 is restricted.In the occasion of taking in, push towards arrow (e) direction (Fig. 2), be accommodated in the accommodating groove 11.In addition, by with insulation board 9 from pulling out 1 grade to pulling out 2 grades (Fig. 2, Fig. 3), the length (c) of pulling out along outside terminal of insulation board 9 can be changed over c '.Therefore, can pull out required length along outside terminal, implement the insulation of the required length of suitable various shells, obtain the high circuit breaker of phase insulation reliability being installed on the alternate insulation board of outside terminal.
In addition, represented that more than insulation board 9 is the flexible forms of 2 grades of formulas, but the also flexible form of multistage of 3 grades of flexible forms of formula etc.
Example 2
In addition, the 1st grade of insulation board 9 and the 2nd grade of elastomer by the electric insulation of rubber and so on are formed, constitute between projection 9d and accommodating groove 11 and protruding 9b and the accommodating groove 9e while being subjected to elasticity to push the state of slide (carrying out Elastic Sliding), even the 1st grade of insulation board 9 or the 2nd grade in pulling out the way, also can keep in this position more securely.
Example 3
Figure 12 is the stereogram of the circuit breaker of expression the invention process form 3, is the state of taking in behind the insulation board.Figure 13 is the stereogram of the insulation board state of pulling out of expression Figure 12.Figure 14 is the stereogram of the state after the insulation board of expression Figure 12 is dismantled.Figure 15 is the installation stereogram of the insulation board of expression example 3.Among the figure, the parts identical or suitable with example 1 are represented with same-sign.Spring cylinder 14, such as the net of making by TACHIKAWA BLIND company that rolls, be the rubber film (thickness 1mm, width 200mm, pull out length 200mm) after the calendering to be rolled into the cylinder shape form, by catching the handle (being arranged on the portion of heaving of the leading section of rubber film) that is arranged on the insulation board 9 to pull out, scalable is along the length of pulling out of outside terminal.
As shown in figure 15, spring cylinder installation is up and down used in the recess 16 with protruding 5 half installations up and down that are pressed into a side mounting blocks (such as right mounting blocks 5a), partly be pressed under the state at this, by will spring cylinder up and down install with projection 15 half be pressed into the opposing party mounting blocks (such as left mounting blocks 5b) about installation with the installation of carrying out spring cylinder 14 in the recess 16.That is, with the fixing a pair of spring cylinder 14 of a pair of mounting blocks 5a, 5b.
Below, the action of the insulation board 9 of the air circuit 1 of above structure is explained.By with insulation board 9 along outside terminal towards arrow (f) direction (Figure 13) slowly pull out, make insulation board 9 pull out the required length c that pulls out by spring cylinder 14, strengthen the alternate insulation of outside terminal in the same manner with example 1.In addition, decontrol, can suck towards arrow (g) direction and take in by insulation board 9 is spurred the back suddenly towards arrow (f) direction earlier.For the loss that prevents insulation board 9, when being preferably in product export, the installation that in advance insulation board 9 is pressed into the accommodating groove 17 that is fixed in mounting base 5 is with in the recess 16.In addition, compare with example 1, the depth direction length of the also comparable mounting base 5 of accommodating groove 17 of spring cylinder 14 is short.
Example 4
Figure 16 is the stereogram of the circuit breaker shown in the expression example 4.Example 4 is different with example 1～3, and insulation board 9 is arranged on this susceptor body of air circuit 1.This susceptor body 20 in insulating properties is protruding with power supply side terminal 21, load side terminal 22, and 20a is provided with accommodating groove 11 at its phase partition, is provided with insulation board 9 in this accommodating groove 11.Insulation board 9 and accommodating groove 11 are identical with example 1, its explanation of Therefore, omited.Cover plate 24 is mounted on this susceptor body 20 by intermediate base 23.The end face of phase partition 20a is stopped up by intermediate base 23, and insulation board 9 can not enter in the intermediate base 23.
Example 5
Example 1～4th is illustrated air circuit, and the present invention also is applicable to Inturruptor for sub-line.Figure 17 is the stereogram of the circuit breaker of expression the invention process form 5.Figure 18 is the exploded perspective view of the circuit breaker assembling of explanation Figure 17.Figure 19 is the part figure that the explanation insulation board is accommodated in the state in the circuit breaker accommodating groove of Figure 17.
As shown in figure 17, Inturruptor for sub-line 30 has 1 pair of contact in the enclosure that is formed by cover plate 31, pedestal 35, is to be used for cutting off overcurrent that circuit takes place.Figure 17 is expression 3 example of the Inturruptor for sub-line 30 of usefulness mutually, and cover plate 31, pedestal 35 are made of the molded part of the casting resin of insulating properties.
With reference to Figure 18, the assembling of Inturruptor for sub-line 30 is described.Insulation board 40 is inserted the accommodating groove 37 interior (Figure 19) of an end of the phase partition 36 that is arranged on pedestal 35.Then, with terminal board 34 (being outside terminal) (Figure 17), have the fixed contact of contact and movable contact (not shown), the overcurrent testing agency (not shown) of switching mechanism (not shown), detection of excessive current and driven opening mechanism that movable contact is opened and closed etc. is disposed on the pedestal 35.Then, cover plate 31 is covered on pedestal 35, cover plate 31 is fixed on the pedestal 35, thereby finish Inturruptor for sub-line shown in Figure 17 30 with screw (not shown).
With reference to Figure 18,19, insulation board 40 is described.Plate-like portion 40a by the insulation board 40 that forms with example 1 identical materials has the thickness of slab that can slide between protruding 36a, the 36a of the leading section that is arranged at phase partition 36 (outboard end).On the other hand, be provided with protruding 40b at the root of insulation board 40, this projection 40b has the size that can slide and can not slide between protruding 36a, 36a in accommodating groove 37.
Therefore, insulation board 40 can be towards the p-q direction (length direction of pedestal 35 of Figure 17, direction along outside terminal) pulls out Len req, simultaneously, by cover plate 31 top is fixed, so after Inturruptor for sub-line 30 assemblings, be held in the state that can not come off from the shell of cover plate 31 and pedestal 35 formations.
In addition, here be that the length of insulation board 40 example longer than the length (length of the length direction of pedestal 35) of accommodating groove 37 is illustrated, but, also can use as implementing the insulation board of the flexible form of 2 grades of formulas shown in the form 1, or as implementing the insulation board of the drum-type shown in the form 3, in these occasions, the major part of insulation board can be accommodated in the accommodating groove 37, can miniaturization when the carrying Inturruptor for sub-line.
As mentioned above, circuit breaker of the present invention is at the alternate insulation board that the insulation between outside terminal is strengthened that is provided with of described outside terminal, simultaneously, scalable is along the length of pulling out of the described insulation board of described outside terminal, so can pull out required length with being arranged on the alternate insulation board of outside terminal, be fit to the insulation of the Len req of various shells, obtain the high circuit breaker of phase insulation reliability.
Claims (7)
1. circuit breaker, when detecting overcurrent, the energising of circuit is cut off, it is characterized in that, in being located at the alternate accommodating groove (11) (17) (37) of described outside terminal (3) (4) (21) (22) (34), take in the insulation board (9) (40) that the insulation between outside terminal (3) (4) (21) (22) (34) is strengthened, described insulation board (9) (40) is pulled out Len req from described accommodating groove (11) (17) (37) along described outside terminal (3) (4) (21) (22) (34), and the described insulation board of scalable (9) (40) is along the length of pulling out of described outside terminal (3) (4) (21) (22) (34).
2. circuit breaker according to claim 1, it is characterized in that, described insulation board (9) (40), be accommodated in the accommodating groove (11) (17) (37) in the mounting base (5) (35) that is arranged on described outside terminal (3) (4) (21) (22) (34), when needing insulation, pull out Len req along described outside terminal (3) (4) (21) (22) (34).
3. circuit breaker according to claim 2, it is characterized in that, described insulation board (9), form with multi-stage expansion is accommodated in the interior described accommodating groove (11) of mounting base (5) (20) that is arranged on described outside terminal (3) (4) (21) (22) (34), when needing insulation, pull out required progression along described outside terminal (3) (4) (21) (22) (34), and the described insulation board of scalable (9) (40) is along the length of pulling out of described outside terminal (3) (4) (21) (22) (34).
4. according to claim 2 or 3 described circuit breakers, it is characterized in that described insulation board (9) (40) is formed by elastomer, can and described accommodating groove (11) (37) between Elastic Sliding.
5. circuit breaker according to claim 1 and 2, it is characterized in that, described insulation board (9), be that the insulating properties rubber film is rolled into the cylinder shape, be accommodated in the accommodating groove (17) in the mounting base (5) that is arranged on described outside terminal (3) (4), when needing insulation, pull out Len req along described outside terminal (3) (4).
6. circuit breaker according to claim 1 is characterized in that, described insulation board (9) is accommodated in the accommodating groove (11) in this susceptor body (20) that is arranged on circuit breaker, when needing insulation, pulls out Len req along described outside terminal (21) (22).
7. circuit breaker according to claim 1, it is characterized in that described insulation board (40) is accommodated in the accommodating groove (37) on the phase partition of the described outside terminal (34) that is arranged on Inturruptor for sub-line, when needing insulation, pull out Len req along described outside terminal (34).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003013868A JP4104996B2 (en) | 2003-01-22 | 2003-01-22 | Breaker |
| JP2003013868 | 2003-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1518031A CN1518031A (en) | 2004-08-04 |
| CN1271661C true CN1271661C (en) | 2006-08-23 |
Family
ID=32902082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031331920A Expired - Fee Related CN1271661C (en) | 2003-01-22 | 2003-07-25 | Circuit breaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4104996B2 (en) |
| KR (1) | KR100527823B1 (en) |
| CN (1) | CN1271661C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378179B (en) * | 2007-08-28 | 2011-08-17 | 三菱电机株式会社 | Draw-out type circuit breaker, and terminal device and phase insulating board thereof |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06121756A (en) * | 1992-10-14 | 1994-05-06 | Aisin Seiki Co Ltd | Automatic stool and stool cover opening and closing device |
| JP4367407B2 (en) * | 2005-12-16 | 2009-11-18 | 三菱電機株式会社 | Control circuit connection device for drawer type circuit breaker |
| KR100924431B1 (en) * | 2007-12-13 | 2009-10-29 | 엘에스산전 주식회사 | Cradle of air circuit breaker |
| KR101148796B1 (en) * | 2010-12-31 | 2012-05-24 | 엘에스산전 주식회사 | Circuit breaker |
| KR200477248Y1 (en) * | 2011-07-22 | 2015-05-29 | 엘에스산전 주식회사 | An Insulation Barrier of the MCCB and the Fixing Structure for the Insulation Barrier thereof |
| EP2575156B1 (en) * | 2011-09-29 | 2017-04-26 | Hager-Electro SAS | Anti-hiatus device provided for a joining area of two adjacent shell portions of a housing of a modular electrical appliance |
| KR101386583B1 (en) * | 2012-12-05 | 2014-04-18 | 엘에스산전 주식회사 | Three phase integrated lug barrier of molded case circuit barrier |
| JP6415351B2 (en) * | 2015-02-25 | 2018-10-31 | 日東工業株式会社 | Distribution board |
| KR102094778B1 (en) * | 2016-01-18 | 2020-03-31 | 현대일렉트릭앤에너지시스템(주) | Assembly type insulating barrier |
| KR101823516B1 (en) * | 2016-08-31 | 2018-01-30 | 엘에스산전 주식회사 | Trip mechanism for dc molded case circuit breaker |
| WO2018211579A1 (en) * | 2017-05-16 | 2018-11-22 | 三菱電機株式会社 | Drawer-type circuit breaker |
| EP3726676B1 (en) * | 2017-12-14 | 2022-10-19 | Mitsubishi Electric Corporation | Drawer type breaker |
| KR102102884B1 (en) * | 2018-12-11 | 2020-04-22 | 엘에스일렉트릭(주) | Molded Case Circuit Breaker |
| KR102303548B1 (en) | 2020-01-10 | 2021-09-17 | 엘에스일렉트릭 (주) | Cover frame and magnetic contactor include the same |
| KR102303549B1 (en) | 2020-01-10 | 2021-09-17 | 엘에스일렉트릭 (주) | Insulation component and magnetic contactor include the same |
-
2003
- 2003-01-22 JP JP2003013868A patent/JP4104996B2/en not_active Expired - Lifetime
- 2003-07-21 KR KR10-2003-0049817A patent/KR100527823B1/en not_active IP Right Cessation
- 2003-07-25 CN CNB031331920A patent/CN1271661C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378179B (en) * | 2007-08-28 | 2011-08-17 | 三菱电机株式会社 | Draw-out type circuit breaker, and terminal device and phase insulating board thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4104996B2 (en) | 2008-06-18 |
| KR20040067785A (en) | 2004-07-30 |
| CN1518031A (en) | 2004-08-04 |
| KR100527823B1 (en) | 2005-11-09 |
| JP2004227905A (en) | 2004-08-12 |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
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