CN201622985U - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN201622985U CN201622985U CN2010200501394U CN201020050139U CN201622985U CN 201622985 U CN201622985 U CN 201622985U CN 2010200501394 U CN2010200501394 U CN 2010200501394U CN 201020050139 U CN201020050139 U CN 201020050139U CN 201622985 U CN201622985 U CN 201622985U
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- CN
- China
- Prior art keywords
- moving contact
- support
- circuit breaker
- miniature circuit
- housing
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- 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 - Lifetime
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Abstract
The utility model provides a miniature circuit breaker, and mainly solves the problems of complex structure, unreasonable space utilization and high failure rate of the conventional miniature circuit breaker. The miniature circuit breaker is characterized in that brackets comprise a main bracket (14) and an assistant bracket (15); both the main bracket (14) and the assistant bracket (15) are hinged with a housing (4); a shifting pin (16) is arranged on the main bracket (14); a shifting fork (17) is arranged on the assistant bracket (15); the shifting pin (16) is clamped with the shifting fork (17) in a sliding manner; a torsion spring (18) for resetting the assistant bracket (15) is arranged on the housing (4); and movable contact frames (9) are mounted on the both sides of the assistant bracket (15). The miniature circuit breaker fully utilizes the space in the housing, reasonably arranges each part, and has the characteristics of simple structure and low failure rate.
Description
Technical field:
The utility model relates to a kind of low-voltage electrical apparatus, is specifically related to a kind of miniature circuit breaker.
Background technology:
At present, the miniature circuit breaker at the two poles of the earth is generally adopted, this miniature circuit breaker is mainly by three housings that separate, transmission mechanism, overload protection arrangement, arc-control device, moving contact, fixed contact, binding post is formed, its inside by middle casing with two polar circuits separately, transmission mechanism wherein is mainly by snap close, tripping, support, moving contact frame, " U " type connecting rod and handle are formed, support, " U " type connecting rod and handle are formed four-bar mechanism, have chute on the support, one end of " U " type connecting rod places in the chute and can slide therein, tripping is a dihedral, an end of tripping blocks mutually with snap close during normal the use, and the other end blocks the chute on the support; In overheated, when overload,, tripping breaks away from snap close, the tripping rotation, and the chute on the support is opened, and " U " type connecting rod slides along chute can't block support, and support drives moving contact and moves the disengaging fixed contact under the effect of spring force.Because the moment that moving contact and fixed contact break away from can produce electric arc, for successfully being introduced, electric arc carries out arc extinguishing in the arc-control device, there is a kind of fixed contact of miniature circuit breaker to be arranged on the position of the middle part of housing near arc control device, and snap close, tripping, support, moving contact frame and bimetal leaf are concentrated a side that is arranged on transmission mechanism in the housing, space utilization in the complex structure, housing is unreasonable, the assembling difficulty, bimetal leaf is subjected to electric arc influence, the failure rate height.
The utility model content:
In order to overcome existing miniature circuit breaker complex structure, space utilization is unreasonable and failure rate is high deficiency, the utility model provides a kind of miniature circuit breaker, this miniature circuit breaker has made full use of the space in the housing, and each arrangements of components is reasonable, has characteristics simple in structure and that failure rate is low.
The technical solution of the utility model is: this miniature circuit breaker comprises transmission mechanism, moving contact, fixed contact, arc control device, housing and input, lead-out terminal, transmission mechanism wherein is mainly by snap close, tripping, support, moving contact frame, " U " type connecting rod and handle are formed, moving contact is installed on the moving contact frame, fixed contact is positioned at the entrance side of arc control device and is fixed on the yoke, moving contact is electrically connected with input terminal and is corresponding with fixed contact, lead-out terminal is electrically connected with bimetal leaf, support is divided into main support and assistant support, main support and assistant support all are hinged with housing, main support is provided with stirs pin, assistant support is provided with fork, described pin and the sliding mutually card of described fork stirred, housing is provided with a torsion spring that assistant support is resetted; Moving contact frame is all installed in the both sides of assistant support.
The all hinged moving contact frame in the both sides of described assistant support is provided with bearing pin between described 2 moving contact frames, is provided with extension spring between assistant support and the moving contact frame, and the two ends of extension spring are hung on the bearing pin and the backing pin on the assistant support of moving contact frame.
Have through hole on the described housing, a moving contact frame is provided with the circular arc end face and near the housing upside, scribbles two kinds of different colours on the described end face.
The yoke of a side and overload coil support are one and are electrically connected with the end lead-in wire of overload coil in the described yoke, and the other end of overload coil goes between and is electrically connected with bimetal leaf.
Described bimetal leaf is positioned at a side of lead-out terminal, sets gradually snap close and tripping from left to right between handle and overload coil support.
The overload coil of built-in iron core is installed on the described overload coil support, and being provided with between an end of iron core and the snap close can rotating torsion spring, and the two ends of torsion spring are hung in the end of snap close and iron core; The other end of iron core is corresponding with moving contact frame.
The utlity model has following beneficial effect: owing to take such scheme, support Design is for dividing body structure, main support can drive the assistant support rotation, but main support is opposite with the direction of assistant support rotation, pull contact that handle can realize moving contact and fixed contact and separate, meanwhile, then be distributed in handle one side for snap close, tripping and bimetal leaf, rationally utilized the space of enclosure interior, with the background technology simplified in comparison structure at transmission mechanism position, be convenient to assembling, bimetal leaf is not subjected to electric arc influence, and failure rate is low.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is exploded views of transmission mechanism among Fig. 1.
1-moving contact among the figure, 2-fixed contact, 3-arc control device, 4-housing, 5-input terminal, the 6-lead-out terminal, 7-snap close, 8-tripping, 9-moving contact frame, 10-" U " type connecting rod, 11-handle, 12-yoke, 13-bimetal leaf, the 14-main support, the 15-assistant support, 16-stirs pin, the 17-fork, the 18-torsion spring, 19-bearing pin, 20-extension spring, 21-backing pin, the 22-through hole, 23-overload coil support, 24-iron core, 25-torsion spring.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, this miniature circuit breaker comprises transmission mechanism, moving contact 1, fixed contact 2, arc control device 3, housing 4 and input, lead-out terminal (5,6), transmission mechanism wherein is mainly by snap close 7, tripping 8, support, moving contact frame 9, " U " type connecting rod 10 and handle 11 are formed, moving contact 1 is installed on the moving contact frame 9, fixed contact 2 is positioned at the entrance side of arc control device 3 and is fixed on the yoke 12, moving contact 1 is electrically connected with input terminal 5 and is corresponding with fixed contact 2, lead-out terminal 6 is electrically connected with bimetal leaf 13, support is divided into main support 14 and assistant support 15, main support 14 and assistant support 15 all are hinged with housing 4, main support 14 is provided with stirs pin 16, assistant support 15 is provided with fork 17, described pin 16 and the sliding mutually card of described fork 17 stirred, and housing 4 is provided with a torsion spring 18 that assistant support 15 is resetted; Moving contact frame 9 is all installed in the both sides of assistant support 15.Support Design is for dividing body structure, main support 14 can drive assistant support 15 rotations, but the direction of main support 14 and assistant support 15 rotations is opposite, pulls contact that handle 11 can realize moving contact 1 and fixed contact 2 and separates, meanwhile, be distributed in handle 11 1 sides for snap close 7, tripping 8 and 13 of bimetal leafs, rationally utilized housing 4 volume inside, with the background technology simplified in comparison structure at transmission mechanism position, be convenient to the assembling, bimetal leaf 13 is not subjected to electric arc influence, and failure rate is low.
By Fig. 1 in conjunction with shown in Figure 2, the all hinged moving contact frame 9 in the both sides of described assistant support 15, be provided with bearing pin 19 between described 2 moving contact frames 9, be provided with extension spring 20 between assistant support 15 and the moving contact frame 9, the two ends of extension spring 20 are hung on the backing pin 21 on bearing pin 19 and the assistant support 15.Under the effect of extension spring 20,2 moving contact frames 9 have the trend that turns clockwise, when moving contact 1 and fixed contact 2 closures, moving contact frame 9 counterclockwise deflection certain angles, moving contact 1 is remained and fixed contact 2 tight state of contact, can not produce the gap and discharge, burn moving contact 1 and fixed contact 2.
By shown in Figure 1, have 22, one moving contact frames 9 of through hole on the described housing 4 and be provided with the circular arc end face and, scribble two kinds of different colours on the described end face near housing 4 upsides.Can see endface position on the moving contact frame 9 from through hole 22, judge closure state or released state according to the color of seeing.
By shown in Figure 1, the yoke 12 of the side in the described yoke 12 is electrically connected for one and with the end lead-in wire of overload coil with overload coil support 23, and the other end lead-in wire of overload coil is electrically connected with bimetal leaf 13.When moving contact 1 and fixed contact 2 closures, input terminal 5, moving contact 1, fixed contact 2, yoke 12, overload coil support 23, overload coil, bimetal leaf 13, lead-out terminal 6 form the loop, if electric current is excessive in this loop, then make overload coil produce bigger magnetic field force, attract iron core action wherein, iron core touches snap close 7 actions, and tripping 8 breaks away from snap close 7, realizes overload protection; When overheated, bimetal leaf 13 distortion also touch snap close 7 actions, and tripping 8 breaks away from snap close 7, realizes overtemperature protection.
By shown in Figure 1, described bimetal leaf 13 is positioned at a side of lead-out terminal 6, sets gradually snap close 7 and tripping 8 between handle 11 and overload coil support 23 from left to right.Utilized to this connection and reasonable arrangement the space in the housing 4, simple in structure.
By shown in Figure 1, the overload coil of built-in iron core 24 is installed on the described overload coil support 23, being provided with between an end of iron core 24 and the snap close 7 can rotating torsion spring 25, and the two ends of torsion spring 25 are hung in the end of snap close 7 and iron core 24; The other end of iron core 24 is corresponding with moving contact frame 9.By torsion spring 25 direction-changeables, iron core 24 can be transferred torque on the snap close 7 by torsion spring 25 when moving contact frame 9 directions are moved, make snap close 7 and tripping 8 glue from, structure is ingenious, reasonable.
Claims (6)
1. miniature circuit breaker, comprise transmission mechanism, moving contact (1), fixed contact (2), arc control device (3), housing (4) and input, lead-out terminal (5,6), transmission mechanism wherein is mainly by snap close (7), tripping (8), support, moving contact frame (9), " U " type connecting rod (10) and handle (11) are formed, moving contact (1) is installed on the moving contact frame (9), fixed contact (2) is positioned at the entrance side of arc control device (3) and is fixed on the yoke (12), moving contact (1) is electrically connected with input terminal (5) and is corresponding with fixed contact (2), lead-out terminal (6) is electrically connected with bimetal leaf (13), it is characterized in that: support is divided into main support (14) and assistant support (15), main support (14) and assistant support (15) all are hinged with housing (4), main support (14) is provided with stirs pin (16), assistant support (15) is provided with fork (17), described pin (16) and the sliding mutually card of described fork (17) stirred, housing (4) is provided with a torsion spring (18) that assistant support (15) is resetted; Moving contact frame (9) is all installed in the both sides of assistant support (15).
2. miniature circuit breaker according to claim 1, it is characterized in that: all hinged moving contact frames in the both sides of assistant support (15) (9), be provided with bearing pin (19) between described 2 moving contact frames (9), be provided with extension spring (20) between assistant support (15) and the moving contact frame (9), the two ends of extension spring (20) are hung on the backing pin (21) on bearing pin (19) and the assistant support (15).
3. miniature circuit breaker according to claim 1 and 2 is characterized in that: have through hole (22) on the housing (4), a moving contact frame (9) is provided with the circular arc end face and near housing (4) upside, scribbles two kinds of different colours on the described end face.
4. miniature circuit breaker according to claim 1 and 2 is characterized in that: the yoke of a side (12) is electrically connected for one and with the end lead-in wire of overload coil with overload coil support (23), and the other end lead-in wire of overload coil is electrically connected with bimetal leaf (13).
5. miniature circuit breaker according to claim 4 is characterized in that: bimetal leaf (13) is positioned at a side of lead-out terminal (6), sets gradually snap close (7) and tripping (8) between handle (11) and overload coil support (23) from left to right.
6. miniature circuit breaker according to claim 5, it is characterized in that: the overload coil that built-in iron core (24) are installed on the overload coil support (23), being provided with between one end of iron core (24) and the snap close (7) can rotating torsion spring (25), and the two ends of torsion spring (25) are hung in the end of snap close (7) and iron core (24); The other end of iron core (24) is corresponding with moving contact frame (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200501394U CN201622985U (en) | 2010-01-12 | 2010-01-12 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200501394U CN201622985U (en) | 2010-01-12 | 2010-01-12 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622985U true CN201622985U (en) | 2010-11-03 |
Family
ID=43026441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200501394U Expired - Lifetime CN201622985U (en) | 2010-01-12 | 2010-01-12 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201622985U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763990B (en) * | 2010-01-12 | 2012-02-08 | 温州波普电气有限公司 | Small-sized circuit breaker |
| CN102543603A (en) * | 2012-01-20 | 2012-07-04 | 浙江鼎威科技有限公司 | Ultrathin minitype breaker |
| CN102881531A (en) * | 2012-09-13 | 2013-01-16 | 浙江天正电气股份有限公司 | Easily-assembled small circuit breaker and operating mechanism thereof |
| CN103050342A (en) * | 2012-12-20 | 2013-04-17 | 李敏 | Circuit breaker operation mechanism and circuit breaker |
| CN105590804A (en) * | 2014-11-04 | 2016-05-18 | 西门子公司 | Opening mechanism of breaker, and breaker |
| CN106206194A (en) * | 2016-09-23 | 2016-12-07 | 徐州新电高科电气有限公司 | A kind of micro-disconnected divide-shut brake system |
-
2010
- 2010-01-12 CN CN2010200501394U patent/CN201622985U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763990B (en) * | 2010-01-12 | 2012-02-08 | 温州波普电气有限公司 | Small-sized circuit breaker |
| CN102543603A (en) * | 2012-01-20 | 2012-07-04 | 浙江鼎威科技有限公司 | Ultrathin minitype breaker |
| CN102881531A (en) * | 2012-09-13 | 2013-01-16 | 浙江天正电气股份有限公司 | Easily-assembled small circuit breaker and operating mechanism thereof |
| CN103050342A (en) * | 2012-12-20 | 2013-04-17 | 李敏 | Circuit breaker operation mechanism and circuit breaker |
| CN103050342B (en) * | 2012-12-20 | 2014-10-15 | 李敏 | Circuit breaker operation mechanism and circuit breaker |
| CN105590804A (en) * | 2014-11-04 | 2016-05-18 | 西门子公司 | Opening mechanism of breaker, and breaker |
| CN105590804B (en) * | 2014-11-04 | 2018-03-27 | 西门子公司 | The brake separating mechanism and its breaker of breaker |
| CN106206194A (en) * | 2016-09-23 | 2016-12-07 | 徐州新电高科电气有限公司 | A kind of micro-disconnected divide-shut brake system |
| CN106206194B (en) * | 2016-09-23 | 2018-02-16 | 徐州新电高科电气有限公司 | A kind of micro- disconnected division brake system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101103 Effective date of abandoning: 20100112 |