CN102254757A - Neutral pole structure of miniature circuit breaker - Google Patents
Neutral pole structure of miniature circuit breaker Download PDFInfo
- Publication number
- CN102254757A CN102254757A CN2011101729814A CN201110172981A CN102254757A CN 102254757 A CN102254757 A CN 102254757A CN 2011101729814 A CN2011101729814 A CN 2011101729814A CN 201110172981 A CN201110172981 A CN 201110172981A CN 102254757 A CN102254757 A CN 102254757A
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- circuit breaker
- arc
- binding post
- neutral pole
- wiring board
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Abstract
The invention discloses a neutral pole structure of a miniature circuit breaker, comprising a line-incoming wiring terminal (15), a line-outgoing wiring terminal (14), an opening/closing operation mechanism and a circuit board (13), wherein the line-incoming wiring terminal (15) and the line-outgoing wiring terminal (14) are respectively positioned at two ends of a circuit breaker bottom shell (16); the opening/closing operation mechanism comprises a movable contact (8) and a static contact (7) which are used for realizing the opening/closing of a line; two ends of the circuit board (13) are respectively and fixedly connected to the bottom shell (16) and an upper cover and close to the lateral wall of the bottom shell (16), and the board surface of the circuit board (13) is vertical to the bottom shell and/or the upper cover; and the neutral pole of the circuit breaker also comprises an arc extinguishing chamber (11), wherein the arc extinguishing chamber (11) is positioned at the lower part of the bottom shell (16), and an arc extinguishing grid sheet is arranged by extending to the direction close to the movable contact (8) and the static contact (7). According to the neutral pole structure, the problem that the neutral pole of the miniature circuit breaker in the prior art has a poor arc extinguishing effect to cause poor short-circuited breaking capacity is solved.
Description
Technical field
The invention belongs to the low-voltage electrical apparatus field, relate in particular to a kind of neutral pole structure of miniature circuit breaker.
Background technology
The structure of the neutral pole of existing miniature circuit breaker is owing to be subjected to the restriction in space, and its neutral pole does not install arc control device additional, and arc extinction performance is relatively poor, causes short circuit breaking capacity poor, and electric arc is serious to neutral pole moving contact scaling loss.
Chinese patent CN2541948Y discloses a kind of miniature circuit breaker, and its N utmost point circuit breaker comprises the electronic circuit board that places base bottom, handle, push-rod assembly, moving contact, fixed contact, snap close, tripping etc.Base and top cover are formed the shell of miniature circuit breaker.Push-rod assembly links to each other with handle, and driving handle can make push-rod assembly promote moving contact, with relative and fixed contact that put contacts.Inlet wire binding post and the outlet binding post two ends of described drain pan that are placed in this circuit breaker; Electronic circuit board is positioned over the middle part between described base and the top cover, and its plate face and base be arranged in parallel; Branch switch-on operating mechanisms such as handle, push-rod assembly, moving contact, fixed contact, snap close, tripping are arranged at above the described electronic circuit board.There is following problem in this N utmost point circuit breaker: 1. this N utmost point circuit breaker makes circuit breaker can't install arc quenching system because electronic circuit board takes up room greatlyyer, and the contact overcurrent produces behind the electric current effectively arc extinguishing.Cause its short circuit breaking capacity poor.2. the wiring board placement location is near from dynamic and static contact distance, and when product disjunction short circuit current, electric arc damages components and parts and the wiring board on the wiring board easily.3. this wiring board is arranged in the gap between base and the loam cake, do not fix its in transportation or vibration processes on the wiring board electronic component might cause the hidden danger of loose contact.
For improving the arc leading and suppressing ability and the breaking capacity of existing miniature circuit breaker, Chinese patent CN2705887Y discloses a kind of high-performance arc leading and suppressing structure of miniature circuit breaker, reaches the muffler plate that following run-on tab end position is set up trough of belt in close last run-on tab in the arc leading and suppressing structure of its neutral pole.By the comprehensive function of abovementioned technology, improved the slot arc quenching effect.Thereby reduced because electric arc is detained the scaling loss that causes moving contact, effectively improved the breaking capacity of miniature circuit breaker.But its slot arc extinguishing is just realized by muffler plate, but owing to spatial limitation, the slot area of this muffler plate is less relatively, and arc quenching effect is still undesirable.
Summary of the invention
Technical problem to be solved by this invention is that the neutral pole space utilization of miniature circuit breaker of the prior art is unreasonable, causes placing arc-control device, and then causes arc quenching effect poor, the problem of short circuit breaking capacity difference.
For this reason, the invention provides a kind of neutral pole structure of miniature circuit breaker, it comprises the chamber that drain pan and loam cake constitute; The be placed in two ends of described chamber of inlet wire binding post and outlet binding post, two described binding posts; Breaking-closing operating mechanism is arranged between the two described binding posts, and it comprises moving contact and the fixed contact that is used to realize the circuit disjunction; Described fixed contact is electrically connected with described outlet binding post, and described moving contact is electrically connected with described inlet wire binding post; And wiring board, the two ends of described wiring board be fixedly connected on respectively described drain pan and on cover, it approaches the sidewall of described drain pan, the plate face of described wiring board is with described drain pan and/or loam cake is vertical is provided with; The neutral pole of described circuit breaker also comprises arc control device, and described arc control device place described drain pan bottom, and described arc control device comprise a plurality of arc extinguishing grid pieces that be arranged in parallel, and described arc extinguishing grid pieces extends to the direction near described moving contact and fixed contact.
Described wiring board be plugged in away from the described drain pan of described moving contact and the first side of stationary contact and on cover, described arc control device are arranged between described wiring board and fixed contact and/or the moving contact.
The neutral pole of described circuit breaker also comprises arc-initiating device, and the electric arc when described arc-initiating device is used for the dynamic/static contact disjunction is introduced described arc control device; Described arc-initiating device comprises run-on tab and following run-on tab,
Described upward run-on tab is arranged at the top of described arc control device, and the one end is corresponding with the disjunction position of described moving contact, and the other end is passed by the lower end of described wiring board after bending is extended, and connects with described inlet wire binding post;
Described run-on tab down is arranged at the bottom of described arc control device, fits with described fixed contact after bending is extended, and connects with described outlet binding post by described fixed contact.
Form the holding wire binding post respectively below described inlet wire binding post and described outlet binding post, described holding wire causes on the described wiring board along the preset clearance between described down run-on tab and the described drain pan after by the holding wire terminal.
The present invention has following advantage:
1. neutral pole circuit breaker of the present invention is set up arc control device through resetting the position of described wiring board in the chamber interior of circuit breaker, increases product arc extinguishing ability, can improve the product short circuit breaking capacity greatly.
2. further, wiring board is from dynamic and static contact distance, and when big short circuit current appearred in product, electronic devices and components were unlikely to by arc damage on the wiring board.Wiring board is by being plugged on the shell, fixing is on loam cake and base, its wiring board of comparing existing miniature circuit breaker directly is positioned over the structure of described drain pan, installs firmly, reduces in transportation or vibration processes on the wiring board electronic component because inertia may cause the hidden danger of loose contact.
3. further, the present invention connects striking arc to arc control device by arc-initiating device, electric arc is produced after, can from moving contact the arc root be transferred to run-on tab fast, from fixed contact the arc root is transferred to down run-on tab, carry out arc extinguishing thereby make arc column all enter arc control device.Promptly protected the unlikely electrical wear of moving contact excessive, also reduced electric arc in motion process to the injury of other parts, make arc motion smooth, smooth, moving line is correct, fast, these technical measures can further improve the product breaking capacity.
4. further, the holding wire binding post change two ends into can both wiring.It has changed tradition and has had only a side joint line to be subjected to install limitation, after the improvement, can go up wiring, also can descend wiring can also reserve lower connecting terminal to connect holding wire as required, changed the defective that installation is limited to.
Description of drawings
Fig. 1 is a cut-away view of opening the miniature circuit breaker neutral pole of loam cake.
Reference numeral is expressed as among the figure:
Run-on tab 10-tripping 11-arc control device 12-goes up run-on tab 13-wiring board 14-outlet binding post 15-inlet wire binding post 16-drain pan 17-shunt release under the 1-holding wire binding post 2-snap close 3-handle 4-U type connecting rod 5-holding wire 6-lever 7-fixed contact 8-moving contact 9-.
Embodiment
Below with reference to accompanying drawing, use following examples that the present invention is further set forth.
Embodiment 1
Figure 1 shows that the neutral pole structure of miniature circuit breaker of the present invention, it comprises inlet wire binding post 15 and the outlet binding post 14 that lays respectively at circuit breaker drain pan 16 two ends; Be arranged at the breaking-closing operating mechanism between the two described binding posts, it comprises moving contact 8 and the fixed contact 7 that is used to realize the circuit disjunction; Described fixed contact 7 is electrically connected with described outlet binding post 14, and described moving contact 8 is electrically connected with described inlet wire binding post 15; And wiring board 13, described wiring board 13 be plugged in away from the described drain pan 16 of moving contact 8 and fixed contact 7 one sides and on cover.
The neutral pole of described circuit breaker also comprises arc control device 11, and described arc control device 11 place in the described drain pan 16, between described inlet wire binding post 15 and outlet binding post 14.Described arc control device comprise a plurality of arc extinguishing grid pieces that be arranged in parallel, and described arc extinguishing grid pieces extends to the direction near described moving contact 8 and fixed contact 7.This neutral pole also comprises arc-initiating device, and the electric arc that produces when being used for the dynamic/static contact disjunction is introduced described arc control device 11; Described arc-initiating device comprises the last run-on tab 12 that is positioned at described arc control device 11 tops, one side end of described upward run-on tab 12 is corresponding with the disjunction position of described moving contact, after bending is extended, pass, and connect with described inlet wire binding post 15 by the lower end of described wiring board 13; And the following run-on tab 9 that is positioned at described arc control device 11 bottoms, after bending is extended, fit, and connect with described outlet binding post 14 by described fixed contact 7 with described fixed contact 7.Added after arc-initiating device produces electric arc, can be fast the electric arc of moving contact 8 places generation be transferred to run-on tab 12 with the arc root, carried out arc extinguishing thereby make arc column all enter arc control device 11.Promptly protected moving contact 8 unlikely electrical wear excessive, also reduced electric arc in motion process to the injury of other parts, make arc motion smooth, smooth, moving line is correct, fast, improves the product breaking capacity greatly.
Run-on tab 12 upsides also are provided with shunt release 17 on described, be used to realize long-range deciliter, external control line input AC 230V control voltage signal, circuit breaker could be closed, and the control voltage signal disappears, and the electronic building brick trigger of N utmost point the inside was worked after 0.5～5 second, trigger controllable silicon and make the shunt release closure, thereby cause the circuit breaker disjunction, this function is widely used in supporting the making of IC-card pre payment watthour meter and is used for the break-make of control circuit, prevents user's owing electricity charges
Described drain pan 16 two ends form holding wire binding post 1 respectively, and described holding wire 5 causes on the described wiring board 13 along the preset clearance between described run-on tab 9 down and the described drain pan 16 by holding wire binding post 1 back.
The neutral pole of this miniature circuit breaker breaking-closing operating mechanism also also comprises the mobile link mechanism that handles described moving contact 8, this connects the U type connecting rod 4 that this mechanism comprises handle 3, is connected with handle, and snap close 2 and tripping 10, tripping 10 drives described moving contact 8 by a lever 6 and moves.
The divide-shut brake course of work of described breaking-closing operating mechanism is:
During combined floodgate, handle 3 is up pushed away, handle 3 makes tripping 10 snap close that links closely by U type connecting rod 4, and lever 6 is rotated, and drives moving contact 8 and moves breaker closing toward the direction of fixed contacts 7.
During separating brake, handle 3 is down pulled, handle 3 makes snap close 2 motions by U type connecting rod 4, and snap close 2 makes moving contact 8 leave fixed contact 7 under the active force of moving contact spring and returns breaker open operation.
Present embodiment is the another kind of execution mode of the neutral pole structure of this miniature circuit breaker, and this neutral pole circuit breaker comprises inlet wire binding post 15 and the outlet binding post 14 that lays respectively at circuit breaker drain pan 16 two ends; Be arranged at the breaking-closing operating mechanism between the two described binding posts, it comprises moving contact 8 and the fixed contact 7 that is used to realize the circuit disjunction; Described fixed contact 7 is electrically connected with described outlet binding post 14, and described moving contact 8 is electrically connected with described inlet wire binding post 15; And wiring board 13, described wiring board 13 be plugged in away from the described drain pan 16 of moving contact 8 and fixed contact 7 one sides and on cover; The neutral pole of described circuit breaker also comprises arc control device 11, described arc control device 11 place in the described drain pan 16, described arc control device 11 are arranged between described wiring board 13 and fixed contact 7 and/or the moving contact 8, described arc control device comprise a plurality of arc extinguishing grid pieces that be arranged in parallel, and described arc extinguishing grid pieces extends to the direction near described moving contact 8 and fixed contact 7.
Also be provided with shunt release 17 at described arc control device 11 upsides, be used to realize long-range deciliter, external control line input AC 230V control voltage signal, circuit breaker could be closed, and the control voltage signal disappears, and the electronic building brick trigger of N utmost point the inside was worked after 0.5～5 second, trigger controllable silicon and make the shunt release closure, thereby cause the circuit breaker disjunction, this function is widely used in supporting the making of IC-card pre payment watthour meter and is used for the break-make of control circuit, prevents user's owing electricity charges.
Described drain pan 16 two ends form holding wire binding post 1 respectively, and described holding wire 5 causes on the described wiring board 13 along the preset clearance between described arc control device 11 and the described drain pan 16 by holding wire binding post 1 back.
The neutral pole of this miniature circuit breaker breaking-closing operating mechanism also also comprises the mobile link mechanism that handles described moving contact 8, this connects the U type connecting rod 4 that this mechanism comprises handle 3, is connected with handle, and snap close 2 and tripping 10, tripping 10 drives described moving contact 8 by a lever 6 and moves.
The breaking-closing operating working process of mechanism of present embodiment is with embodiment 1.
Though the present invention elaborates it by embodiment; but; the any form that does not exceed the claim protection range that those skilled in the art should be understood that on this basis to be made and the variation of details all belong to invention which is intended to be protected.
Claims (4)
1. the neutral pole structure of a miniature circuit breaker, it comprises the chamber that drain pan (16) and loam cake constitute;
The be placed in two ends of described chamber of inlet wire binding post (15) and outlet binding post (14), two described binding posts;
Breaking-closing operating mechanism is arranged between the two described binding posts, and it comprises moving contact (8) and the fixed contact (7) that is used to realize the circuit disjunction; Described fixed contact (7) is electrically connected with described outlet binding post (14), and described moving contact (8) is electrically connected with described inlet wire binding post (15);
And wiring board (13), it is characterized in that:
The two ends of described wiring board (13) be fixedly connected on respectively described drain pan (16) and on cover, it approaches the sidewall of described drain pan (16), the plate face of described wiring board (13) is with described drain pan and/or loam cake is vertical is provided with;
The neutral pole of described circuit breaker also comprises arc control device (11), described arc control device (11) place described drain pan (16) bottom, described arc control device (11) comprise a plurality of arc extinguishing grid pieces that be arranged in parallel, and described arc extinguishing grid pieces extends to the direction near described moving contact (8) and fixed contact (7).
2. the neutral pole structure of miniature circuit breaker according to claim 1 is characterized in that:
Described wiring board (13) be plugged in away from the described drain pan (16) of described moving contact (8) and fixed contact (7) one sides and on cover, described arc control device (11) are arranged between described wiring board (13) and fixed contact (7) and/or the moving contact (8).
3. the neutral pole structure of miniature circuit breaker according to claim 1 and 2 is characterized in that:
The neutral pole of described circuit breaker also comprises arc-initiating device, and the electric arc when described arc-initiating device is used for the dynamic/static contact disjunction is introduced described arc control device (11); Described arc-initiating device comprises run-on tab (12) and following run-on tab (9),
Described upward run-on tab (12) is arranged at the top of described arc control device (11), and the one end is corresponding with the disjunction position of described moving contact (8), and the other end is passed by the lower end of described wiring board after bending is extended, and connects with described inlet wire binding post (15);
Described run-on tab (9) down is arranged at the bottom of described arc control device (11), fits with described fixed contact (7) after bending is extended, and connects with described outlet binding post (14) by described fixed contact (7).
4. the neutral pole structure of miniature circuit breaker according to claim 3 is characterized in that:
Below at described inlet wire binding post (15) and described outlet binding post (14) forms holding wire binding post (1) respectively, and described holding wire (5) causes on the described wiring board (13) along the preset clearance between described run-on tab (9) down and the described drain pan (16) by holding wire terminal (1) back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110172981 CN102254757B (en) | 2011-06-24 | 2011-06-24 | Neutral pole structure of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110172981 CN102254757B (en) | 2011-06-24 | 2011-06-24 | Neutral pole structure of miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
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| CN102254757A true CN102254757A (en) | 2011-11-23 |
| CN102254757B CN102254757B (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110172981 Active CN102254757B (en) | 2011-06-24 | 2011-06-24 | Neutral pole structure of miniature circuit breaker |
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| CN (1) | CN102254757B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167336A (en) * | 2014-07-16 | 2014-11-26 | 浙江天正电气股份有限公司 | Automatic opening mechanism with remote controlling function, and circuit breaker using the same |
| CN107507743A (en) * | 2017-10-20 | 2017-12-22 | 孙岳 | A kind of rain-proof RCCB |
| CN110880438A (en) * | 2018-09-06 | 2020-03-13 | 天津市中力神盾电子科技有限公司 | A plug-in miniature circuit breaker |
| CN113725031A (en) * | 2020-05-26 | 2021-11-30 | 天津首瑞智能电气有限公司 | Electric switch |
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| JP2000011818A (en) * | 1998-01-07 | 2000-01-14 | Mitsubishi Electric Corp | Circuit breaker |
| JP2004281144A (en) * | 2003-03-13 | 2004-10-07 | Mitsubishi Electric Corp | Ground leakage breaker |
| CN1841616A (en) * | 2005-03-29 | 2006-10-04 | 三菱电机株式会社 | Residual current circuit breaker |
| CN201444468U (en) * | 2009-03-09 | 2010-04-28 | 湖北盛佳电器设备有限公司 | Circuit breaker with control line switch-in end positioned at power line inlet end |
| CN101923989A (en) * | 2009-04-18 | 2010-12-22 | 通用电气公司 | Allocation of space in the circuit breaker |
| CN202094061U (en) * | 2011-06-24 | 2011-12-28 | 人民电器集团有限公司 | Neutral pole structure for miniature circuit breaker |
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2011
- 2011-06-24 CN CN 201110172981 patent/CN102254757B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000011818A (en) * | 1998-01-07 | 2000-01-14 | Mitsubishi Electric Corp | Circuit breaker |
| JP2004281144A (en) * | 2003-03-13 | 2004-10-07 | Mitsubishi Electric Corp | Ground leakage breaker |
| JP4012098B2 (en) * | 2003-03-13 | 2007-11-21 | 三菱電機株式会社 | Earth leakage breaker |
| CN1841616A (en) * | 2005-03-29 | 2006-10-04 | 三菱电机株式会社 | Residual current circuit breaker |
| CN201444468U (en) * | 2009-03-09 | 2010-04-28 | 湖北盛佳电器设备有限公司 | Circuit breaker with control line switch-in end positioned at power line inlet end |
| CN101923989A (en) * | 2009-04-18 | 2010-12-22 | 通用电气公司 | Allocation of space in the circuit breaker |
| CN202094061U (en) * | 2011-06-24 | 2011-12-28 | 人民电器集团有限公司 | Neutral pole structure for miniature circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167336A (en) * | 2014-07-16 | 2014-11-26 | 浙江天正电气股份有限公司 | Automatic opening mechanism with remote controlling function, and circuit breaker using the same |
| CN107507743A (en) * | 2017-10-20 | 2017-12-22 | 孙岳 | A kind of rain-proof RCCB |
| CN110880438A (en) * | 2018-09-06 | 2020-03-13 | 天津市中力神盾电子科技有限公司 | A plug-in miniature circuit breaker |
| CN113725031A (en) * | 2020-05-26 | 2021-11-30 | 天津首瑞智能电气有限公司 | Electric switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102254757B (en) | 2013-08-14 |
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Owner name: ZHEJIANG PEOPLE ELECTRICAL APPLIANCE CO., LTD. Free format text: FORMER OWNER: PEOPLE ELECTRICAL APPLIANCES GROUP CO., LTD. Effective date: 20140609 |
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Effective date of registration: 20140609 Address after: 325604, Yueqing, Zhejiang province Liushi town wide industrial zone Patentee after: Zhejiang People Electrical Appliance Co., Ltd. Address before: 325604, No. 555, Station Road, Liushi Town, Wenzhou, Zhejiang, Yueqing Patentee before: People Electrical Appliances Group Co., Ltd. |