CN202796788U - Moulded case circuit breaker - Google Patents
Moulded case circuit breaker Download PDFInfo
- Publication number
- CN202796788U CN202796788U CN 201220539167 CN201220539167U CN202796788U CN 202796788 U CN202796788 U CN 202796788U CN 201220539167 CN201220539167 CN 201220539167 CN 201220539167 U CN201220539167 U CN 201220539167U CN 202796788 U CN202796788 U CN 202796788U
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- CN
- China
- Prior art keywords
- breaker
- plastic casing
- pressuring line
- wiring board
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a moulded case circuit breaker which comprises a base (1), a circuit board (2), a groove (3), a lead pressing groove (4) and a wiring hole; the base is internally provided with a tripping device and a mutual inductor; the mounting surface of the circuit board is provided with the groove (3) which can be used for separating the circuit board and elements in the base, and the circuit board is arranged in the groove; the lead pressing groove (4) and the wiring hole are also arranged on the mounting surface; a three-phase electricity supply lead of the circuit board is embedded and pressed in the lead pressing groove, and is connected with electricity supply elements after passing through the wiring hole; and the circuit board, a lead which is electrically connected with the tripping device, and a signal lead which is electrically connected with the mutual inductor are embedded and pressed in the lead pressing groove, and pass through the wiring hole, and enter the base. The moulded case circuit breaker can effectively lower the operating temperature of the circuit board, and also can enable the arrangement of leads of each electric appliance component to be reasonable.
Description
Technical field
The utility model relates to a kind of breaker of plastic casing, belongs to Low Voltage Electrical Apparatus.
Background technology
Circuit breaker is a kind of contact maker for distributing electric energy, power circuit and motor etc. being carried out real-time guard; it can be according to normal, the overload of circuit, short circuit and the state such as under-voltage; in time carry, close and close and cut-off electric current in the normal loop, thereby guarantee that the safety of producing carries out.
A kind of as in the circuit breaker of breaker of plastic casing, it is with the shell of plastic insulation as device, and can automatically cut off electric current equally after actual current surpasses the escape set point.In practical work process; the wiring board that is arranged on breaker of plastic casing inside is the indispensable parts of earth leakage protective; it is carrying the function that signal is taked, signal amplifies and the signal power contrasts of leakage current, can effectively protect the leakage current of harm circuit or equipment.
In the existing breaker of plastic casing, all electric components for example contact, arc control device, instrument transformer, leakage tripping device and wiring board all seal and are installed in the plastic casing.In the limited space of breaker of plastic casing, to reserve sub-fraction and be used for installing wiring board, wiring board then is connected with the thermal element bimetal leaf and carries out power taking.But; wiring board itself is exactly a kind of heater element; be subject to simultaneously the restriction of the breaker of plastic casing confined space; the heat that wiring board self distributes can not in time leave; the heat that other element work produce further impels the temperature of wiring board to raise and accelerates; thereby cause easily the unstable of components and parts work on the wiring board, affect the earth leakage protective stability of whole breaker of plastic casing.
In addition, the lead-in wire of all electric elements is arranged in the housing of breaker of plastic casing simultaneously, and it is unreasonable, chaotic to cause lead-in wire to arrange.
The utility model content
Technical problem to be solved in the utility model is the too high and chaotic technical problem of each electric component lead-in wire layout of wiring board working temperature in the existing breaker of plastic casing, thereby provides a kind of working temperature that can either effectively reduce wiring board can make again the favorably situated breaker of plastic casing of each electric component lead-in wire.
To achieve these goals, the utility model provides a kind of breaker of plastic casing, comprising:
Pedestal is equipped with release, instrument transformer in described base interior;
Wiring board;
Offer the groove that the element separation of described wiring board and described base interior is opened on the installed surface of described pedestal, described wiring board is arranged in the described groove;
Also be provided with pressuring line groove and wiring hole on the described installed surface, the three phase supply wire embedding of described wiring board is pressed in the described pressuring line groove and passes described wiring hole and is connected with power supply component;
The wire that described wiring board is electrically connected with described release and the holding wire embedding that is electrically connected with described instrument transformer are pressed in the described pressuring line groove and pass described wiring hole and enter described base interior.
In the above-mentioned breaker of plastic casing, described breaker of plastic casing also comprises protective case, and described wiring board is arranged in the protective case, described protective case be installed in the described groove and the opening of described protective case outwardly.
In the above-mentioned breaker of plastic casing, described wiring hole comprises three phase supply hole, release fairlead and instrument transformer fairlead, and described three phase supply hole, release fairlead and instrument transformer fairlead are separately positioned on described installed surface near the position of described power supply component, described release and described instrument transformer.
In the above-mentioned breaker of plastic casing, described pressuring line groove comprises:
Three the first pressuring line grooves are arranged in parallel and are communicated with described three phase supply hole respectively;
The second pressuring line groove is communicated with described release fairlead;
The 3rd pressuring line groove is parallel to described the second pressuring line groove setting and is communicated with described instrument transformer fairlead.
In the above-mentioned breaker of plastic casing, described the second pressuring line groove and described the 3rd pressuring line groove are arranged on described three the first pressuring line grooves spacer region each other.
In the above-mentioned breaker of plastic casing, described power supply component is the screw that is installed in fastening thermal element in the described three phase supply hole.
In the above-mentioned breaker of plastic casing, be fixedly installed conductive plate on the nut of described screw, described three phase supply wire is connected on the described conductive plate.
In the above-mentioned breaker of plastic casing, described breaker of plastic casing also comprises bottom, and described bottom is fixedly mounted on the described installed surface.
In the above-mentioned breaker of plastic casing, be provided with louvre on the described bottom.
In the above-mentioned breaker of plastic casing, described breaker of plastic casing also comprises top cover, and described top cover is installed on the described pedestal.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) breaker of plastic casing of the present utility model, its wiring board is arranged in the groove on the pedestal installed surface, and described wiring board is independent of the base interior spatial placement, thereby has effectively reduced the heat radiation of heater element and the temperature rise of the wiring board that causes makes wiring board work more stable.
(2) breaker of plastic casing of the present utility model, the holding wire embedding that the wire that the three phase supply wire of its wiring board, wiring board are electrically connected with the base interior release and wiring board are electrically connected with instrument transformer is pressed in the pressuring line groove of pedestal installed surface, so that neat reasonable, the safety and stability of arranging of above-mentioned cable.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein,
Fig. 1 is the perspective view of the utility model breaker of plastic casing;
Fig. 2 is the front-view schematic diagram of the utility model breaker of plastic casing.
Description of reference numerals
The 1-pedestal, 2-wiring board, 3-groove, 4-pressuring line groove, 5-protective case, 6-three phase supply hole, 7-release fairlead, 8-instrument transformer fairlead, 9-the first pressuring line groove, 10-the second pressuring line groove, 11-the 3rd pressuring line groove.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
Breaker of plastic casing described in the utility model, as shown in Figure 1, it comprises pedestal 1 and wiring board 2, described pedestal 1 inside is equipped with release, instrument transformer, because the known technology that is set to this area of release and instrument transformer, and therefore not to repeat here, also do not show in the drawings.Installed surface at described pedestal 1 offers the groove 3 that described wiring board 2 and the element separation of described pedestal 1 inside are opened, and described wiring board 2 is arranged in the described groove 3; On the installed surface of described pedestal 1, also be provided with pressuring line groove 4 and wiring hole, wherein, the three phase supply wire embedding of described wiring board 2 is pressed in the described pressuring line groove 4 and passes described wiring hole and is connected with the power supply component of described base interior, the wire that described wiring board 2 is electrically connected with described release and the holding wire embedding that is electrically connected with described instrument transformer are pressed in the described pressuring line groove 4 and pass described wiring hole and enter described pedestal 1 inside, to be connected to described release and instrument transformer.
The mounting means of described wiring board 2 in described groove 3 do not limit, as long as described wiring board 2 other elements with described pedestal 1 inside can be separated; In the above-described embodiments, described wiring board 2 is to be set directly in the described groove 3 of described pedestal 1 installed surface.Also can install by the mode of the following stated.
As execution mode that can conversion; described breaker of plastic casing can also further arrange protective case 5; described wiring board 2 is arranged in the protective case 5; described protective case 5 be installed in the described groove 3 and the opening of described protective case 5 towards the outside of described breaker of plastic casing; so not only realized installing and fixing by 5 pairs of wiring boards 2 of protective case; simultaneously arranging of protective case 5 can also play a protective role to described wiring board 2, makes described wiring board 2 avoid damaging in the transportation of described breaker of plastic casing or installation process.
In the above-described embodiments, described wiring hole can be one, and namely the three phase supply wire of described wiring board 2, the wire that is electrically connected with described release and the holding wire that is electrically connected with described instrument transformer pass simultaneously described wiring hole and enter described pedestal 1 inside.Certainly, described wiring hole also can be for a plurality of, namely in order to avoid the three phase supply wire of described wiring board 2, the wire that is electrically connected with described release and the holding wire that is electrically connected with described instrument transformer produce interference each other, as shown in Figure 2, described wiring hole can comprise three phase supply hole 6, release fairlead 7 and instrument transformer fairlead 8, described three phase supply hole 6, release fairlead 7 and instrument transformer fairlead 8 are separately positioned on described installed surface near described power supply component, the position of described release and described instrument transformer, like this, described three phase supply wire passes respectively described three phase supply hole 6 and is connected with described power supply component, the described wire that is electrically connected with release passes described release fairlead 7 and is connected with described release, and described holding wire passes described instrument transformer fairlead 8 and is connected with described instrument transformer.
Need to prove, in the breaker of plastic casing described in the utility model, the quantity of described wiring hole and position can specifically limit change with setting position according to the actual industrial demand, as long as the cable that can realize described wiring board 2 is rationally inner across and into described pedestal 1.
In the present embodiment, for so that the described cable of described wiring board 2 arrange neat rationally, the described cable of described wiring board 2 can be pressed in the described pressuring line groove 4 in embedding.As shown in Figure 2, described pressuring line groove 4 comprises can three the first pressuring line grooves 9, and these three the first pressuring line grooves 9 are arranged in parallel and are communicated with described three phase supply hole 6 respectively; The second pressuring line groove 10 is communicated with described release fairlead 7; The 3rd pressuring line groove 11 is parallel to described the second pressuring line groove 10 and arranges and be communicated with described instrument transformer fairlead 8.Like this, described three phase supply wire respectively embedding is pressed in described the first pressuring line groove 9 and the described three phase supply hole 6 of passing separately is connected with described power supply component, the described wire embedding that is electrically connected with release is pressed in described the second pressuring line groove 10 and passes described release fairlead 7 and is connected with described release, and described holding wire embedding is pressed in described the 3rd pressuring line groove 11 and passes described instrument transformer fairlead 8 and is connected with described instrument transformer.
As shown in Figure 2, more reasonable for the described cable layout that makes described wiring board 2, described the second pressuring line groove 10 is separately positioned on described three the first pressuring line grooves 9 spacer region each other with described the 3rd pressuring line groove 11.
Wherein, the quantity of described pressuring line groove 4 and arrangement can specifically limit change with arrangement according to the actual industrial demand, as long as can realize the described cable of described wiring board 2 layout of rationally arranging.
In the present embodiment, described power supply component is for being installed in the screw of fastening thermal element (bimetal leaf) in the described three phase supply hole 6, and described three phase supply wire can be connected on separately the described screw.Steadiness in order to ensure described three phase supply wire is connected with described screw is fixedly installed conductive plate on the nut of described screw, and described three phase supply wire is connected on the described conductive plate.
The breaker of plastic casing of present embodiment also comprises bottom, and described bottom is by securing member screw or be fixedly mounted on the described installed surface with the mode of described pedestal clamping for example.Can be provided with louvre on the described bottom, louvre can be arranged on the position corresponding with described wiring board 2, in order to described wiring board 2 is fully contacted with atmosphere, internal heat is in time shed.The quantity of louvre does not limit, can be according to the needs setting of actual product.
As preferred embodiment, on the basis of above-described embodiment, described breaker of plastic casing in the present embodiment can also comprise the top cover (not shown), and described top cover is installed on the described pedestal 1, in order to form the shell of breaker of plastic casing with described pedestal 1.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the utility model creation.
Claims (10)
1. a breaker of plastic casing comprises
Pedestal (1) is equipped with release, instrument transformer in described pedestal (1) inside;
Wiring board (2);
It is characterized in that,
Offer the groove (3) that the element separation that described wiring board (2) and described pedestal (1) is inner is opened on the installed surface of described pedestal (1), described wiring board (2) is arranged in the described groove (3);
Also be provided with pressuring line groove (4) and wiring hole on the described installed surface, the three phase supply wire embedding of described wiring board (2) is pressed in the described pressuring line groove (4) and passes described wiring hole and is connected with power supply component;
The wire that described wiring board (2) is electrically connected with described release and the holding wire embedding that is electrically connected with described instrument transformer are pressed in the described pressuring line groove (4) and pass described wiring hole and enter described pedestal (1) inside.
2. breaker of plastic casing according to claim 1, it is characterized in that, described breaker of plastic casing also comprises protective case (5), and described wiring board (2) is arranged in the protective case (5), described protective case (5) be installed in the described groove (3) and the opening of described protective case (5) outwardly.
3. breaker of plastic casing according to claim 1, it is characterized in that, described wiring hole comprises three phase supply hole (6), release fairlead (7) and instrument transformer fairlead (8), and described three phase supply hole (6), release fairlead (7) and instrument transformer fairlead (8) are separately positioned on described installed surface near the position of described power supply component, described release and described instrument transformer.
4. breaker of plastic casing according to claim 3 is characterized in that, described pressuring line groove (4) comprising:
Three the first pressuring line grooves (9) are arranged in parallel and are communicated with described three phase supply hole (6) respectively;
The second pressuring line groove (10) is communicated with described release fairlead (7);
The 3rd pressuring line groove (11) is parallel to that described the second pressuring line groove (10) arranges and is communicated with described instrument transformer fairlead (8).
5. breaker of plastic casing according to claim 4 is characterized in that, described the second pressuring line groove (10) is arranged on described three the first pressuring line grooves (9) spacer region each other with described the 3rd pressuring line groove (11).
6. breaker of plastic casing according to claim 1 is characterized in that, described power supply component is for being installed in the screw of fastening thermal element in the described three phase supply hole (6).
7. breaker of plastic casing according to claim 6 is characterized in that, is fixedly installed conductive plate on the nut of described screw, and described three phase supply wire is connected on the described conductive plate.
8. each described breaker of plastic casing is characterized in that according to claim 1-7, and described breaker of plastic casing also comprises bottom, and described bottom is fixedly mounted on the described installed surface.
9. breaker of plastic casing according to claim 8 is characterized in that, is provided with louvre on the described bottom.
10. breaker of plastic casing according to claim 9 is characterized in that, described breaker of plastic casing also comprises top cover, and described top cover is installed on the described pedestal (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220539167 CN202796788U (en) | 2012-10-19 | 2012-10-19 | Moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220539167 CN202796788U (en) | 2012-10-19 | 2012-10-19 | Moulded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796788U true CN202796788U (en) | 2013-03-13 |
Family
ID=47823993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220539167 Withdrawn - After Issue CN202796788U (en) | 2012-10-19 | 2012-10-19 | Moulded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915884A (en) * | 2012-10-19 | 2013-02-06 | 德力西电气有限公司 | Molded case circuit breaker |
-
2012
- 2012-10-19 CN CN 201220539167 patent/CN202796788U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915884A (en) * | 2012-10-19 | 2013-02-06 | 德力西电气有限公司 | Molded case circuit breaker |
| CN102915884B (en) * | 2012-10-19 | 2015-07-22 | 德力西电气有限公司 | Molded case circuit breaker |
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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: 20130313 Effective date of abandoning: 20150722 |
|
| RGAV | Abandon patent right to avoid regrant |