CN102683124A - Overload alarm non-tripping device of thermomagnetic plastic housing circuit breaker - Google Patents
Overload alarm non-tripping device of thermomagnetic plastic housing circuit breaker Download PDFInfo
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- CN102683124A CN102683124A CN2011100572613A CN201110057261A CN102683124A CN 102683124 A CN102683124 A CN 102683124A CN 2011100572613 A CN2011100572613 A CN 2011100572613A CN 201110057261 A CN201110057261 A CN 201110057261A CN 102683124 A CN102683124 A CN 102683124A
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Abstract
The invention discloses an overload alarm non-trilling device of a thermomagnetic plastic housing circuit breaker. The device comprises three groups of tripping mechanisms and a rotary shaft, wherein each of the tripping mechanisms includes a bimetallic strip, a support and a traction rod, the rotary shaft penetrates through the three groups of the tripping mechanisms, the bimetallic strip in each group of the tripping mechanism is provided with the support, the rotary shaft penetrates through the traction rod, a forced direction of the traction rod points to a center of the rotary shaft, each group of the tripping mechanism further comprises a micro switch and a thermoelement, the micro switch is fixed on the bimetallic strip through the support and connected with a peripheral alarm circuit, and the thermoelement is connected with the bimetallic strip. According to the overload alarm non-trilling device of the thermomagnetic plastic housing circuit breaker, the micro switch is installed on the bimetallic strip to serve as a trigger device and provides a normally open contact for the peripheral alarm circuit, and the overload alarm non-trilling function of the thermomagnetic plastic housing circuit breaker is achieved, the structure is simple, the cost is low, and the device is capable of continuously and reliably operating at a high temperature environment, has an alarm characteristic of overload long deferred action, and can meet the requirement of continuous power supply for special occasions of fire-fighting occasion, chemical engineering occasion, medical treatment occasion, and the like.
Description
Technical field
The present invention relates to circuit breaker, particularly relate to a kind of Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device.
Background technology
Special place at necessary continued power for example with relevant places such as fire-fighting, chemical industry and medical treatment, when overload situations appears in the load of main circuit, generally can not cut off circuit, only allows output alarm signal; When the load failed because of main circuit, then should cut off circuit immediately.At this moment need use the circuit protection device that to realize above-mentioned functions, to guarantee the continuation of power supply.In addition, this circuit protection device also need satisfy the following requirement in the GB50054 low-voltage distribution design specification: the circuit that the loss that causes than overload for sudden power is bigger, its overload protection should not act on front-end circuit, should act on signal.
Circuit breaker is a kind of circuit protection device, has overload, short circuit and under voltage protection function, and the ability of protection circuit and power supply is arranged.Circuit breaker of a great variety, wherein breaker of plastic casing is more commonly used, as shell, is used between the insulated conductor and the grounded metal part plastic insulation.When electric current surpassed the escape setting, breaker of plastic casing can cut off electric current automatically.Breaker of plastic casing comprises electronic type molded case circuit breaker and Thermomagnetic type breaker of plastic casing; Electronic type molded case circuit breaker has overload-alarm non-tripping function; But relatively hot magnetic-type breaker of plastic casing, electronic type molded case circuit breaker have shortcoming such as easy ageing under cost height, thermal stability difference and the hot operation situation; So the Thermomagnetic type breaker of plastic casing is used more extensively, therefore realize that the overload-alarm non-tripping function of Thermomagnetic type breaker of plastic casing becomes the technical problem that this area needs to be resolved hurrily.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of above-mentioned background technology; Provide a kind of simple in structure, cost is low, stable and reliable operation Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device, can realize the overload-alarm non-tripping function of Thermomagnetic type breaker of plastic casing.
Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device provided by the invention; Comprise three groups of rotating shafts that contain the tripping mechanism of bimetal leaf, support, draw bar and run through three groups of tripping mechanisms; Bimetal leaf in every group of tripping mechanism is provided with support, and draw bar is passed in said rotating shaft, and the force direction that receives of draw bar points to the axle center of rotating shaft; Also comprise sensitive switch and thermal element in every group of tripping mechanism; Said sensitive switch is fixed on the bimetal leaf through support, and sensitive switch also links to each other with peripheral warning circuit, and said thermal element links to each other with bimetal leaf.
In technique scheme, said support is provided with the adjustment hole that is used to regulate the spacing between sensitive switch and the draw bar.
In technique scheme, said adjustment hole is a mounting hole.
In technique scheme, said sensitive switch comprises normally opened contact, and sensitive switch passes through the closed said normally opened contact of touching draw bar under the bimetal leaf heated bending drives.
In technique scheme, said sensitive switch is riveted on the support.
In technique scheme, said support passes through screw on bimetal leaf.
In technique scheme, said sensitive switch is the three-phase sensitive switch, and is parallel-connected in the peripheral warning circuit through lead.
The present invention installs sensitive switch on the bimetal leaf of ordinary hot magnetic-type breaker of plastic casing, as trigger equipment, for peripheral warning circuit provides normally opened contact, realize the overload-alarm non-tripping function of Thermomagnetic type breaker of plastic casing.The present invention is not only simple in structure, cost is low, can under hot environment, continue reliably working, and has the warning characteristic of overload long delay action, can satisfy the requirement of special place continued powers such as fire-fighting, chemical industry and medical treatment.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the right view of Fig. 1;
The circuit theory diagrams of Fig. 3 embodiment of the invention;
Fig. 4 is the structural representation of inventive embodiments medium-height trestle;
Fig. 5 is the end view of Fig. 4.
Among the figure: 1-screw, 2-bimetal leaf, 3-support, 4-draw bar, 5-rotating shaft, 6-sensitive switch, 7-lead, 8-thermal element.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is made further detailed description:
Referring to illustrated in figures 1 and 2; The Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device that the embodiment of the invention provides comprises three groups of tripping mechanisms and the rotating shaft 5 that runs through three groups of tripping mechanisms, and every group of tripping mechanism comprises bimetal leaf 2, support 3, draw bar 4, sensitive switch 6 and thermal element 8; Wherein, Draw bar 4 is passed in rotating shaft 5, and sensitive switch 6 is riveted on the support 3, and support 3 is fixed on the bimetal leaf 2 through screw 1; Sensitive switch 6 is angled with bimetal leaf 2, points to the axle center of rotating shaft 5 with the force direction that receives that guarantees draw bar 4.Thermal element 8 links to each other with bimetal leaf 2.Sensitive switch 6 comprises normally opened contact, and sensitive switch 6 is under bimetal leaf 2 heated bendings drive, through touching draw bar 4 closed normally opened contacts.Referring to shown in Figure 3, sensitive switch 6 is the three-phase sensitive switch, and parallelly connected with lead 7, receives together in the peripheral warning circuit.Referring to Fig. 4 and shown in Figure 5, support 3 is provided with adjustment hole, and this adjustment hole is a mounting hole, and position that can up-down adjustment sensitive switch 6 meets the demands the spacing between sensitive switch 6 and the draw bar 4.
The operation principle of the embodiment of the invention is following:
During embodiment of the invention operate as normal, through electric current, produce heat in the thermal element 8, thermal element 8 is transmitted to the heat that produces on the bimetal leaf 2, and bimetal leaf 2 heated bendings drive sensitive switch 6 to draw bar 4 motions.In normal operation, the heat that thermal element 8 produces is limited, and the crooked stroke of bimetal leaf 2 is less, and the normally opened contact of sensitive switch 6 does not have closure, and peripheral warning circuit can not conducting, and audible-visual annunciator does not send alarm signal.When overload situations appearred in circuit, the heat that thermal element 8 produces increased, and the crooked stroke of bimetal leaf 2 increases, and sensitive switch 6 touches on the draw bar 4, and the normally opened contact of sensitive switch 6 is closed, and peripheral warning circuit is connected, and audible-visual annunciator sends alarm signal.Because the force direction that receives of draw bar 4 points to the center of rotating shaft 5, torque equals zero, and can not cause the overlond trip of Thermomagnetic type breaker of plastic casing.When testing circuit can continue to switch on, the circuit in can fragmentary 3 stopped output alarm signal; When in the circuit during failed because, the electromagnet snap action of Thermomagnetic type breaker of plastic casing, interrupting short circuit, in this process, the overload of Thermomagnetic type breaker of plastic casing is not threaded off can not influence the circuit breaker action.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
The content of not doing in this specification to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (7)
1. Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device; Comprise three groups of tripping mechanisms and the rotating shaft (5) that runs through three groups of tripping mechanisms that contain bimetal leaf (2), support (3), draw bar (4); Bimetal leaf (2) in every group of tripping mechanism is provided with support (3); Draw bar (4) is passed in said rotating shaft (5); The force direction that receives of draw bar (4) points to the axle center of rotating shaft (5), and it is characterized in that: also comprise sensitive switch (6) and thermal element (8) in every group of tripping mechanism, said sensitive switch (6) is fixed on the bimetal leaf (2) through support (3); Sensitive switch (6) also links to each other with peripheral warning circuit, and said thermal element (8) links to each other with bimetal leaf (2).
2. Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device as claimed in claim 1 is characterized in that: said support (3) is provided with the adjustment hole that is used to regulate the spacing between sensitive switch (6) and the draw bar (4).
3. Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device as claimed in claim 2, it is characterized in that: said adjustment hole is a mounting hole.
4. Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device as claimed in claim 1; It is characterized in that: said sensitive switch (6) comprises normally opened contact, and sensitive switch (6) passes through the closed said normally opened contact of touching draw bar (4) under bimetal leaf (2) heated bending drives.
5. Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device as claimed in claim 1, it is characterized in that: said sensitive switch (6) is riveted on the support (3).
6. Thermomagnetic type breaker of plastic casing overload-alarm non-tripping device as claimed in claim 1, it is characterized in that: said support (3) is fixed on the bimetal leaf (2) through screw (1).
7. like the described Thermomagnetic type breaker of plastic casing of each claim of claim 1 to 6 overload-alarm non-tripping device, it is characterized in that: said sensitive switch (6) is the three-phase sensitive switch, and is parallel-connected in the peripheral warning circuit through lead (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100572613A CN102683124A (en) | 2011-03-10 | 2011-03-10 | Overload alarm non-tripping device of thermomagnetic plastic housing circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100572613A CN102683124A (en) | 2011-03-10 | 2011-03-10 | Overload alarm non-tripping device of thermomagnetic plastic housing circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102683124A true CN102683124A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100572613A Pending CN102683124A (en) | 2011-03-10 | 2011-03-10 | Overload alarm non-tripping device of thermomagnetic plastic housing circuit breaker |
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| CN (1) | CN102683124A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576230A (en) * | 2013-10-18 | 2015-04-29 | 上海精益电器厂有限公司 | Overload alarm non-tripping device of MCCB (moulded case circuit breaker) |
| CN106876220A (en) * | 2015-12-14 | 2017-06-20 | 浙江正泰电器股份有限公司 | The thermal overload alarm non-tripping device of breaker |
| CN108321044A (en) * | 2018-04-13 | 2018-07-24 | 法泰电器（江苏）股份有限公司 | A kind of breaker of plastic casing overload-alarm non-tripping device |
| CN112885660A (en) * | 2019-11-29 | 2021-06-01 | 上海电器股份有限公司人民电器厂 | Thermomagnetic overload alarm adjustable non-tripping current protection module and circuit breaker |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3037356A1 (en) * | 1980-09-30 | 1982-04-22 | Siemens AG, 1000 Berlin und 8000 München | Load protection switch with delayed overcurrent release - has additional bimetallic element actuating switch for advance warning signalling device |
| CN101127285A (en) * | 2007-07-06 | 2008-02-20 | 常熟开关制造有限公司(原常熟开关厂） | A plastic shell breaker with over heat alarming function |
| CN201327800Y (en) * | 2009-03-31 | 2009-10-14 | 上海电科博耳电器开关有限公司 | Alarm non-tripping device |
| CN201392791Y (en) * | 2009-03-12 | 2010-01-27 | 浙江嘉凯电气有限公司 | Molded case circuit breaker |
| CN201608125U (en) * | 2010-01-12 | 2010-10-13 | 上海良信电器股份有限公司 | Mechanism for displaying thermomagnetic trip type in circuit breaker |
| CN202084489U (en) * | 2011-03-10 | 2011-12-21 | 北京正北元电器有限公司 | Thermomagnetic plastic-case breaker with overload alarm non-tripping function |
-
2011
- 2011-03-10 CN CN2011100572613A patent/CN102683124A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3037356A1 (en) * | 1980-09-30 | 1982-04-22 | Siemens AG, 1000 Berlin und 8000 München | Load protection switch with delayed overcurrent release - has additional bimetallic element actuating switch for advance warning signalling device |
| CN101127285A (en) * | 2007-07-06 | 2008-02-20 | 常熟开关制造有限公司(原常熟开关厂） | A plastic shell breaker with over heat alarming function |
| CN201392791Y (en) * | 2009-03-12 | 2010-01-27 | 浙江嘉凯电气有限公司 | Molded case circuit breaker |
| CN201327800Y (en) * | 2009-03-31 | 2009-10-14 | 上海电科博耳电器开关有限公司 | Alarm non-tripping device |
| CN201608125U (en) * | 2010-01-12 | 2010-10-13 | 上海良信电器股份有限公司 | Mechanism for displaying thermomagnetic trip type in circuit breaker |
| CN202084489U (en) * | 2011-03-10 | 2011-12-21 | 北京正北元电器有限公司 | Thermomagnetic plastic-case breaker with overload alarm non-tripping function |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576230A (en) * | 2013-10-18 | 2015-04-29 | 上海精益电器厂有限公司 | Overload alarm non-tripping device of MCCB (moulded case circuit breaker) |
| CN106876220A (en) * | 2015-12-14 | 2017-06-20 | 浙江正泰电器股份有限公司 | The thermal overload alarm non-tripping device of breaker |
| CN106876220B (en) * | 2015-12-14 | 2020-02-18 | 浙江正泰电器股份有限公司 | Thermal overload alarm non-tripping device of circuit breaker |
| CN108321044A (en) * | 2018-04-13 | 2018-07-24 | 法泰电器（江苏）股份有限公司 | A kind of breaker of plastic casing overload-alarm non-tripping device |
| CN112885660A (en) * | 2019-11-29 | 2021-06-01 | 上海电器股份有限公司人民电器厂 | Thermomagnetic overload alarm adjustable non-tripping current protection module and circuit breaker |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120919 |