CN1285606A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN1285606A CN1285606A CN 00124089 CN00124089A CN1285606A CN 1285606 A CN1285606 A CN 1285606A CN 00124089 CN00124089 CN 00124089 CN 00124089 A CN00124089 A CN 00124089A CN 1285606 A CN1285606 A CN 1285606A
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- CN
- China
- Prior art keywords
- circuit breaker
- attachment head
- handle
- stop pin
- accessories
- 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.)
- Pending
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- Breakers (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
In a circuit breaker, a recessed part for storing self-contained accessories is partitioned in an upper cover of a main body case assembled in with a contact, an opening and closing mechanism, a tripping mechanism and an operation handle, a accessory cover is arranged in an upper face of the recessed part, an interlocking means for linking the accessory cover and the manual operation handle is provided to restrict the cover in a closed position to preclude the cover from being opened in an on-condition, a lock pin is inplanted, more specifically, in a side face of an opening and closing lever connected to the handle, an engaging slit engaged with the lock pin is formed in a side face of the accessory over along a moving route of the lock pin, and restriction of the lock pin is released only in an off-position of the handle to open and close the cover and to attach and detach the self-contained accessories. The invention is able to improvingly secure safety by simple structure at the time when a user carries out an operation for attaching and detaching a self-contained accessory to/from a circuit breaker main body.
Description
The present invention relates to a kind of circuit breaker, this circuit breaker is an object with Inturruptor for sub-line used in the low pressure distribution plant, residual current circuit breaker etc., can auxiliary switch, alarm switch, voltage as accessory be installed by the user in the future on breaker body and cut off switch, built-in accessories such as afc voltage shearing device not.
As everyone knows; above-mentioned Inturruptor for sub-line that the protection load equipment was used when overcurrent or electric leakage took place or residual current circuit breaker are to equip the general part that overvoltage cutting device and even electrical leakage breaking device are the standard specification making; in order to satisfy user's various requirement, also prepared can after the various built-in accessories that add.
The built-in accessories here have to be made the switching of circuit breaker, tripped condition the auxiliary switch, alarm switch of contact output and makes the voltage shearing device of circuit breaker trip and be reduced to the not afc voltage shearing device etc. that setting makes circuit breaker trip when following forcibly when main circuit voltage according to the remote control command of outside to the outside, various annexes all adopt the boxlike structure, even the circuit breaker of standard specification installs at the purpose position, also need not decompose Shell of circuit breaker, and as long as user's breaker body of packing into simply.
Below the residual current circuit breaker used with 3 circuitry phases be example, Fig. 5 represents its internal structure, Fig. 6 represents can be by the structure of the conventional circuit breaker body housing that adds aforementioned built-in accessories behind the user.In Fig. 5, the body housing of 1 circuit breaker, it is resin molded formed products with lower case 1a and upper cover 1b combination, the 2nd, mains side (left side), the main circuit terminal of load-side (right side), the 3rd, the fixed contact that is connected with the main circuit terminal of mains side, the 4th, movable contact, the 5th, with the contact switching mechanism of manual operation handle (stirring operated handle) 6 combinations, the 7th, be clipped on the dual metal type over current trip of each phase main circuit, the 8th, detect the leakage tripping device that leaks electricity with zero phase current transformer, the 9th, the tripping operation cross bar of tripping mechanism, the 10th, the breech lock supporting base, the 11st, fixing when eliminating current interruption, the muffler plate of the electric arc that produces between travelling contact.
The action of this circuit breaker is well-known, in case over current trip 7 or 8 starts of leakage tripping device when main circuit is switched on, tripping operation cross bar 9 promptly rotates, and breech lock supporting base 10 is discharged, and make contact switching mechanism 5 do the tripping operation action, so that movable contact 4 breaks away from fixed contact 3.In addition, because the tripping operation of circuit breaker action, handle 6 moves to trip position from on-position.And in case reverse turn operation is to on-position again after tripping operation action back temporarily moves to open position with handle 6 from trip position by manual operation, circuit breaker promptly is reset and returns to on-state.
On the other hand, in Fig. 6, for above-mentioned various built-in accessories are installed in breaker body, on upper cover 1b, mark off the recess 12 that surrounds by partition wall in the side of manual operation handle 6, be equipped with the one-sided open attachment head (loam cake) 13 that an end combines with lid 1b hinge at the upper side of this recess 12.
In said structure, after attachment head 13 opened with above-mentioned various built-in accessories with pack into assigned address in the recess 12 of cartridge embedded mode, auxiliary switch, alarm switch can carry out on-off action linkedly with switching, the tripping operation action of circuit breaker, and its contact output is transported to the outside through lead-in wire.In addition, the voltage shearing device, the afc voltage shearing device cuts off the energising of solenoid by it and the breech lock of shut-off mechanism is not discharged, and makes 5 actions of contact switching mechanism, so that movable contact 4 breaks away from.
Yet, above-mentioned the sort of for can be in the body housing 1 of circuit breaker is packed into built-in accessories from the outside in the future and the circuit breaker of recess 12 and attachment head 13 is set, following problem is being arranged aspect its use.
That is, in case when circuit breaker is in on-state ("on" position) mounting or dismounting voltage shearing device, built-in accessories such as afc voltage shearing device not, circuit breaker just may produce misoperation, and operator's finger may touch charged position and get an electric shock danger close.For this reason, traditional circuit breaker is printed words of indicating " must carry out during the mounting or dismounting built-in accessories " on the label of body housing 1 under disconnection or tripped condition, with call user's attention.
Yet,, also can cause the built-in accessories breakage in case, not only may cause circuit breaker misoperation and operator electric shock under the circuit breaker contact condition because the operator of customer-side is uncomfortable or do not note and open the attachment and cover 13 and install and remove built-in accessories by force.
In order to prevent above-mentioned trouble, applicant of the present invention opens in the flat 6-236726 communique the spy and discloses a kind of structure, be to be equipped with the blocking lever that is connected with the contact switching mechanism in the inside of aforementioned recess 12, this blocking lever stretches out when circuit breaker is in on-state, stop the installation and removal of built-in accessories, only under tripped condition, could not be subjected to the obstruction mounting or dismounting annex of this blocking lever.Yet, adopt this structure, the package assembly that contains the blocking lever part is quite complicated, make the assembling of circuit breaker very time-consuming, even circuit breaker is under "on" position, the attachment head of recess also can freely be opened, so open the attachment under the breaker electrifying state when covering, the operator is careless will to be run into the charged position in the recess and cause getting an electric shock.
In view of the above problems, the object of the present invention is to provide a kind of fail safe, circuit breaker simple in structure can guarantee that the user installs and removes built-in accessories in breaker body the time.
To achieve these goals, the present invention is a kind of circuit breaker, in the body housing of forming by lower case and upper cover, pack into fixing and movable contact, with the contact switching mechanism and the shut-off mechanism thereof of manual operation handle combination, be arranged side by side simultaneously built-in accessories are contained in recess in the upper cover in the side of aforementioned handle, and the upper side at this recess is equipped with attachment head
The 1st invention is, be provided with and connect between aforementioned attachment head and the handle, under the contact closure state, this attachment head is limited in the interlock of the off-position that can not open, under the on-state of circuit breaker, attachment head is locked on the off-position, make it to open (technical scheme 1), as interlock, side in the opening that connects manual operation handle and contact switching mechanism is convexly equipped with stop pin towards attachment head, simultaneously along the mobile route of this stop pin side in attachment head, formation can be chimeric with stop pin, and have only when handle is in open position, just remove with stop pin between engage, the slot (technical scheme 2) that allows attachment head to open and close, or form have only when handle is in trip position, just remove with stop pin between engage, the slot (technical scheme 3) that allows attachment head to open and close.
Adopt said structure, when circuit breaker was in on-state, attachment head was limited in can not opening on the off-position, so do not operate and install and remove built-in accessories in recess, operating personnel's safety can be guaranteed thus, and the built-in accessories breakage that operation causes can be prevented to install and remove by force.
The 2nd invention is the trip(ping) bar that just makes the shut-off mechanism start under the contact closure state when setting is covered when opening the attachment on the aforementioned attachment head forcibly, when covering when under the closing of power circuit breaker state, opening the attachment, just make circuit breaker do the tripping operation action, with the safety (technical scheme 4) of preferentially guaranteeing the operator.
Simple declaration to accompanying drawing
Fig. 1 is structure, the action specification figure of the portion of interlocking device of the embodiment of the invention 1, and wherein (a) is illustrated in the state that opens the attachment and cover under the off-state of circuit breaker, (b) the expression on-state.
Fig. 2 is the supplementary notes figure of Fig. 1, and wherein (a) is the vertical view of breaker body, (b) is side elevation in partial section.
Fig. 3 is structure, the action specification figure of the portion of interlocking device of the embodiment of the invention 2, and wherein (a) is illustrated in the state that opens the attachment and cover under the tripped condition of circuit breaker, (b) expression on-state, (c) expression off-state.
Fig. 4 is structure, the action specification figure of the portion of interlocking device of the embodiment of the invention 3, and wherein (a) is sectional view, (b) is the vertical view of breaker body.
Fig. 5 is to be the circuit breaker cut-away view of example with the residual current circuit breaker.
Fig. 6 is the stereoscopic figure that has equipped the conventional circuit breaker body housing of the recess that holds built-in accessories and attachment head in upper cap.
Below in conjunction with Fig. 1～Fig. 4 example of the present invention is described.All members corresponding with Fig. 5 and Fig. 6 are all represented with same-sign and are omitted explanation among the figure of each embodiment.
[embodiment 1]
Fig. 1 (a) and (b) and Fig. 2 (a) and (b) are represented the embodiment corresponding with technical solution of the present invention 1,2.In this embodiment, at the recess 12 that is used to assemble contents of the upper cap 1b that is formed at body housing 1, be provided with the following interlocking device that the annex 13 that will be configured in its upper side is connected with manual operation handle 6.
Promptly, side at the opening 6a that is connected with contact switching mechanism 5 (this contact switching mechanism 5 and 6 combinations of manual operation handle), the stop pin 15 that setting is stretched out towards attachment head 13, and form in the side of attachment head 13 along the mobile route of aforementioned stop pin 15 and the slot 13a chimeric with stop pin.This slot 13a has following effect, promptly, chimeric by with stop pin 15, when circuit breaker is in on-state, attachment head 13 is limited in the off-position that can not open, in the present embodiment, corresponding with the open position of handle 6, form unlimited notch part 13b below lid in the part of slot 13a, so as can to remove with stop pin 15 between engage and attachment head 13 opened and closed.In addition, in the recess 12 of Fig. 2, auxiliary switch 16, alarm switch 17 and voltage shearing device 18 are housed as built-in accessories.
Adopt said structure, under the closing of power circuit breaker state of main circuit contact closure, shown in Fig. 1 (b), handle 6 is in the position of connection.Thereby, cover 13 even under this state, will open the attachment, also can not open the attachment and cover 13 because stop pin 15 engages with slot 13a.Can stop thus and under on-state, install and remove built-in accessories, prevent circuit breaker misoperation and electric shock accidents etc., guarantee safety.On the other hand, shown in Fig. 1 (a), if circuit breaker is in off-state, handle 6 just moves to open position, this moment, the position of stop pin 15 was consistent with the notch part 13b of slot 13a, so under this state, can not be subjected to the constraint of stop pin 15 freely to open and close attachment head 13, safely mounting or dismounting built-in accessories or operation such as check in recess 12.
[embodiment 2]
Fig. 3 (a) and (b) are represented the Application Example of the previous embodiment 1 corresponding with the present invention's the 3rd technical scheme.The interlocking device of present embodiment is basic identical with previous embodiment 1, but the notch part 13b of slot 13a and the trip position of handle 6 are set in the middle of on-position and the open position accordingly, when handle 6 is in connection, open position, stop attachment head 13 to be opened, only when circuit breaker is in tripped condition, could open and close attachment head 13.
Promptly, when adopting embodiment 1, as long as circuit breaker is in off-state, just attachment head 13 can be opened, can not have get an electric shock and jeopardously carry out the mounting or dismounting operation of built-in accessories safely, but when the afc voltage shearing device is installed for example not, even not afc voltage disconnecting apparatus is installed under off-state, circuit breaker also can be done the tripping operation action, the danger that its counter-rotating action can make the operator have finger to be crushed by switching mechanism.
About this point, even if adopt present embodiment except covering 13 interlock under off-state, can not opening the attachment the circuit breaker trip state, then the installation exercise of afc voltage shearing device etc. can not carry out safely yet, compares with embodiment 1, and is safer.
[embodiment 3]
Fig. 4 (a) and (b) are represented the embodiment corresponding with technical scheme of the present invention 4.Present embodiment is mutually opposed with tripping operation cross bar 9, at the hinge side base portion of attachment head 13 trip(ping) bar 13c is set.Open the attachment cover 13 after, this trip(ping) bar 13c pushing tripping operation cross bar 9 and breech lock supporting base 10 discharged, same during with shearing device 7 starts shown in Figure 5, make contact switching mechanism 5 do the tripping operation action, so that movable contact 4 disconnects.
When adopting said structure, when the user when circuit breaker has been installed under the actual user mode at purpose position the mounting or dismounting built-in accessories, if the operator does not earlier make circuit breaker trip cover 13 being switched on or switched off to open the attachment under the state by manual operation, the trip(ping) bar 13c that is located on the attachment head 13 just will trip cross bar 9 to disconnecting the direction pushing, with latch supporting base 10, make breaker body do the tripping operation action forcibly.
Thus, same with previous embodiment 2, can prevent the danger of mounting or dismounting built-in accessories under closing of power circuit breaker and off-state, can after automatically circuit breaker being switched to tripped condition, carry out the mounting or dismounting operation of annex more safely.
As mentioned above, the present invention is a kind of circuit breaker, in the body housing of forming by lower case and upper cover, pack into fixing and movable contact, with the contact switching mechanism and the shut-off mechanism thereof of manual operation handle combination, be arranged side by side simultaneously built-in accessories are contained in recess in the upper cover in the side of aforementioned handle, and the upper side at this recess is equipped with attachment head
The 1st invention is, be provided with and connect, under the contact closure state, this attachment head to be limited in the interlock of the off-position that can not open between aforementioned attachment head and the handle, by under the on-state of circuit breaker, attachment head being locked on the off-position, make it and to open, so can not operate in recess inside and the mounting or dismounting of built-in accessories, can guarantee user's safety thus, and prevent that the built-in accessories that mounting or dismounting operation by force causes from damaging.And, compare with traditional safety measure, owing to adopted the interlock of the lid that under the closing of power circuit breaker state, can not open the attachment,, further guarantee fail safe so can prevent unexpected electric shock accidents.
The 2nd invention is to make the trip(ping) bar of shut-off mechanism start when covering forcibly when opening the attachment in setting on the aforementioned attachment head under the contact closure state, when covering when under the closing of power circuit breaker state, opening the attachment, just make circuit breaker do the tripping operation action, so can preferentially guarantee operator's safety.
Claims (4)
1. circuit breaker, in the body housing of forming by lower case and upper cover, pack into fixing and movable contact, with the contact switching mechanism and the shut-off mechanism thereof of manual operation handle combination, be arranged side by side simultaneously built-in accessories are contained in recess in the upper cover in the side of described handle, and the upper side at this recess is equipped with attachment head, it is characterized in that, be provided with and connect, under the contact closure state, this attachment head to be limited in the interlock of the off-position that can not open between described attachment head and the handle.
2. circuit breaker according to claim 1, it is characterized in that, as interlock, side in the opening that connects manual operation handle and contact switching mechanism, be convexly equipped with stop pin towards attachment head, simultaneously along the mobile route of this stop pin the side of attachment head form can be chimeric with stop pin and have only when handle is in open position, just remove with stop pin between the slot that engages, allows the attachment head switching.
3. circuit breaker according to claim 1, it is characterized in that, as interlock, side in the opening that connects manual operation handle and contact switching mechanism, be convexly equipped with stop pin towards attachment head, simultaneously along the mobile route of this stop pin the side of attachment head form can be chimeric with stop pin and have only when handle is in trip position, just remove with stop pin between the slot that engages, allows the attachment head switching.
4. circuit breaker, in the body housing of forming by lower case and upper cover, pack into fixing and movable contact, with the contact switching mechanism and the shut-off mechanism thereof of manual operation handle combination, in upper cap, mark off simultaneously the recess that holds built-in accessories, and the upper side at this recess is equipped with attachment head, it is characterized in that, when setting is covered when opening the attachment on the described attachment head, just make the trip(ping) bar of shut-off mechanism start forcibly under the contact closure state.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP235176/1999 | 1999-08-23 | ||
| JP11235176A JP2001060429A (en) | 1999-08-23 | 1999-08-23 | Circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1285606A true CN1285606A (en) | 2001-02-28 |
Family
ID=16982204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00124089 Pending CN1285606A (en) | 1999-08-23 | 2000-08-21 | Circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2001060429A (en) |
| CN (1) | CN1285606A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651292A (en) * | 2011-02-22 | 2012-08-29 | Ls产电株式会社 | Circuit breaker |
| CN106024454A (en) * | 2016-07-08 | 2016-10-12 | 莱芜钢铁集团有限公司 | Locking device for air switch |
| CN111933477A (en) * | 2020-06-22 | 2020-11-13 | 华翔翔能科技股份有限公司 | Zero-flashover molded case circuit breaker |
| CN112924845A (en) * | 2019-12-05 | 2021-06-08 | 仁宝电脑工业股份有限公司 | Test fixture and test method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6619970B2 (en) | 2001-09-25 | 2003-09-16 | Yazaki Corporation | Lever fitting-type manual disconnector |
| JP4830595B2 (en) * | 2006-04-07 | 2011-12-07 | 富士電機機器制御株式会社 | Circuit breaker |
| JP4641008B2 (en) * | 2006-06-16 | 2011-03-02 | 株式会社日立産機システム | Circuit breaker |
| JP5009411B2 (en) * | 2010-11-04 | 2012-08-22 | 株式会社日立産機システム | Circuit breaker |
| DE102012201852A1 (en) * | 2012-02-08 | 2013-08-08 | Siemens Aktiengesellschaft | Test button for an electrical switching device and electrical switching device |
| DE102012203030A1 (en) | 2012-02-28 | 2013-08-29 | Siemens Aktiengesellschaft | switching device |
-
1999
- 1999-08-23 JP JP11235176A patent/JP2001060429A/en not_active Withdrawn
-
2000
- 2000-08-21 CN CN 00124089 patent/CN1285606A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651292A (en) * | 2011-02-22 | 2012-08-29 | Ls产电株式会社 | Circuit breaker |
| CN106024454A (en) * | 2016-07-08 | 2016-10-12 | 莱芜钢铁集团有限公司 | Locking device for air switch |
| CN112924845A (en) * | 2019-12-05 | 2021-06-08 | 仁宝电脑工业股份有限公司 | Test fixture and test method |
| CN111933477A (en) * | 2020-06-22 | 2020-11-13 | 华翔翔能科技股份有限公司 | Zero-flashover molded case circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001060429A (en) | 2001-03-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |