CN202363379U - Connection structure of molded case circuit breaker - Google Patents
Connection structure of molded case circuit breaker Download PDFInfo
- Publication number
- CN202363379U CN202363379U CN2011204298539U CN201120429853U CN202363379U CN 202363379 U CN202363379 U CN 202363379U CN 2011204298539 U CN2011204298539 U CN 2011204298539U CN 201120429853 U CN201120429853 U CN 201120429853U CN 202363379 U CN202363379 U CN 202363379U
- Authority
- CN
- China
- Prior art keywords
- nut
- fixed contact
- circuit breaker
- breaker
- copper bar
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a connection structure of a molded case circuit breaker, which comprises a fixed contact, a thermoelement, the molded case circuit breaker and a base. The connecting surface of the fixed contact is higher than a position of a fixed contact point, an incoming copper bar is directly connected onto the connecting surface of the fixed contact and is fixedly connected together with the fixed contact and the base through a first stud and a first nut, a first insulating cover is mounted at the end of the first nut, an outgoing copper bar is connected with a connecting surface of the thermoelement and is fixedly connected together with the thermoelement and the base through a second stud and a second nut, and a second insulating cover is mounted at the end of the second nut. The connection structure of the molded case circuit breaker has the advantages that short circuit breaking capacity of the molded case circuit breaker is enhanced as the connecting surface of the fixed contact is higher than the position of the fixed contact point, using the iron nuts to replace copper nuts enables fixed connection of the circuit breaker with a bus or a cable to be more firm and not easy to slip, a soldering procedure is omitted by means of separation of the fixed contact from the iron nut, and production efficiency of the molded case circuit breaker is improved.
Description
Technical field
The utility model relates to the electric power system low-voltage electrical apparatus, especially relates to a kind of wiring construction of breaker of plastic casing.
Background technology
Breaker of plastic casing is mainly used in makes not the not usefulness of Fraquent start of frequent transitions and motor in the low voltage power distribution network, have overload, short circuit and under voltage protection function, can not be damaged with power-supply device by protection circuit, so is widely used in the low-voltage distribution system.
Along with rising steadily of non-ferrous metal copper price, the domestic and international market competition increasingly sharpens, and reducing cost again when how to improve the quality of products has seemed particularly important.In the existing breaker of plastic casing inlet wire side structure; Between access copper bar and fixed contact, a copper nut coupling part is arranged; Copper nut is welded on the fixed contact, and electric current must pass through this copper nut in the time of circuit breaker, and copper nut plays electric action and is connected fastening effect.In breaker of plastic casing outlet side structure, thermal element is directly to be connected with the outlet copper bar, and what below thermal element, put is copper nut, and copper nut directly uses two screw on pedestal, and this copper nut only plays the role of fastening.Non-ferrous metal copper has high input in this design, and product cost is high; The copper nut texture material is soft, easily sliding tooth when being connected with copper bar; It is unnecessary that inlet wire side copper nut need be welded on the fixed contact, can nut be placed on the fixed contact below fully, makes the inlet wire copper bar directly insert fixed contact.
The utility model content
The utility model technical problem to be solved is the wiring construction that a kind of breaker of plastic casing is provided to the problem that exists in the prior art; Its objective is and guarantee that circuit breaker uses connection reliable; Save the welding sequence of nut; Improve the short circuit breaking capacity of breaker of plastic casing, reduce the breaker of plastic casing cost.
The technical scheme of the utility model is the wiring construction of this kind breaker of plastic casing; Comprise fixed contact, thermal element, breaker of plastic casing, pedestal; The joint face of described fixed contact is higher than the position of fixed contact; The inlet wire copper bar directly is connected on the joint face of fixed contact, and through first double-screw bolt and first nut inlet wire copper bar and fixed contact and pedestal is fixed together, and first insulating cover is installed in the end of first nut; The joint face of outlet copper bar and thermal element is connected, and through second double-screw bolt and second nut outlet copper bar and thermal element and pedestal is fixed together, and second insulating cover is installed in the end of second nut.
Described first insulating cover is identical with the structure of second insulating cover, and all is to be fixed on the pedestal through sunk screw.
Described first nut is identical with the structure of second nut, and is steel No. 45.
Wiring construction with this kind breaker of plastic casing of said structure has the following advantages:
1. the fixed contact joint face of the wiring construction of this kind breaker of plastic casing is higher than the position of fixed contact; Improved the short circuit breaking capacity of breaker of plastic casing; Simultaneously, copper nut is become nut, make the affixed stripped thread that more firmly is difficult for when circuit breaker is connected with bus or cable.
2. the wiring construction fixed contact of this kind breaker of plastic casing separates with nut, has lacked welding sequence, improves production efficient; Simultaneously, nut material becomes 45 steel from red copper, has saved the cost of material; Then reduce the production cost of breaker of plastic casing, improved competitiveness of product.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the assembly structure sketch map of the utility model.
Fig. 2 is the structural representation of fixed contact in the utility model.
Fig. 3 is the structural representation of nut in the utility model.
Fig. 4 is the structural representation of insulating cover in the utility model.
Fig. 5 is the vertical view of structure shown in Figure 4.
In Fig. 1-5,1: the first nut; 2: the inlet wire copper bar; 3: fixed contact; 4: the first double-screw bolts; 5: thermal element; 6: the second double-screw bolts; 7: the outlet copper bar; 8: the second nuts; 9: the second insulating covers; 10: breaker of plastic casing; 11: pedestal; 12: the second insulating covers.
A, B, C, D represent four faces respectively.
Embodiment
Fig. 1 is the installation diagram of the utility model structure; First nut 1 and second nut 8 are inserted the corresponding groove from the back side of circuit breaker pedestal 10; Cover first insulating cover 12 and second insulating cover 9 then respectively; Second insulating cover 12, first insulating cover 9 play positioning action and insulation against ground effect to first nut 1, second nut 8 respectively, and first insulating cover 12 and second insulating cover 9 are fixed on the pedestal 11 through sunk screw.When inlet wire connected, the A face of inlet wire copper bar 2 and fixed contact 3 was connected, and through first double-screw bolt 4 and first nut 1 inlet wire copper bar 2 and fixed contact 3 and pedestal 11 was fixed together.When outlet connects; Be connected by the joint face of outlet copper bar 7, and outlet copper bar 7 and thermal element 5 and pedestal 11 be fixed together, earlier thermal element 5 is installed on the pedestal 11 through second double-screw bolt 6 and second nut 8 with thermal element 5; Put into second nut 8 the reverse side groove of pedestal 11 again; And load onto second insulating cover 9 with second nut, 8 location, outlet copper bar 7 directly is connected with thermal element 7, and fastening through second double-screw bolt 6 and second nut 8.。
Fig. 2 is the utility model static contact structure sketch map; The A face is the joint face of fixed contact 3, and the B face is the fixed contact face, and the A face of newly-designed fixed contact 3 and C face be not on same horizontal plane; And the A face is higher than the B face of fixed contact; Help improving the short circuit breaking capacity of breaker of plastic casing 10, and the A face below of fixed contact 3 is had living space insert first nut 1, the A face of fixed contact 3 directly is connected with inlet wire copper bar 2.
Fig. 3 is the structural representation of the utility model nut; First nut 1 and second nut 8 all adopt 45 steel; To guarantee that inlet wire copper bar 2 is connected with breaker of plastic casing 10 reliably with outlet copper bar 7, the D face of first nut 1 and second nut 8 is used for making inlet wire copper bar 2 to be connected more firm with outlet copper bar 7 with pedestal 11.
Fig. 4 is the utility model insulating cover structural representation, and Fig. 5 is the vertical view of structure shown in Figure 4, and second insulating cover 9 and first insulating cover 12 are fixing through sunk screw and pedestal 11.
The fixed contact joint face of the wiring construction of this kind breaker of plastic casing is higher than the position of fixed contact, has improved the short circuit breaking capacity of breaker of plastic casing, simultaneously; Copper nut is become nut, make affixedly when circuit breaker is connected with bus or cable more firmly to be difficult for stripped thread, fixed contact separates with nut; Lack welding sequence, improved production efficient, simultaneously; Nut material becomes 45 steel from red copper; Save the cost of material, reduced the production cost of breaker of plastic casing then, improved competitiveness of product.
Claims (3)
1. the wiring construction of a breaker of plastic casing; Comprise fixed contact (3), thermal element (5), breaker of plastic casing (10), pedestal (11); It is characterized in that: the joint face of described fixed contact (3) is higher than the position of fixed contact; Inlet wire copper bar (2) directly is connected on the joint face of fixed contact (3), and through first double-screw bolt (4) and first nut (1) inlet wire copper bar (2) and fixed contact (3) is fixed together with pedestal (11), and first insulating cover (12) is installed in the end of first nut (1); Outlet copper bar (7) is connected with the joint face of thermal element (5), and through second double-screw bolt (6) and second nut (8) outlet copper bar (7) and thermal element (5) is fixed together with pedestal (11), and second insulating cover (9) is installed in the end of second nut (8).
2. the wiring construction of a kind of breaker of plastic casing according to claim 1, it is characterized in that: described first insulating cover (12) is identical with the structure of second insulating cover (9), and all is to be fixed on the pedestal (11) through sunk screw.
3. the wiring construction of a kind of breaker of plastic casing according to claim 1 and 2, it is characterized in that: described first nut (1) is identical with second nut (8) structure, and is steel No. 45.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204298539U CN202363379U (en) | 2011-11-03 | 2011-11-03 | Connection structure of molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204298539U CN202363379U (en) | 2011-11-03 | 2011-11-03 | Connection structure of molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202363379U true CN202363379U (en) | 2012-08-01 |
Family
ID=46574543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204298539U Expired - Fee Related CN202363379U (en) | 2011-11-03 | 2011-11-03 | Connection structure of molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202363379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368078A (en) * | 2013-07-09 | 2013-10-23 | 上海电器科学研究院 | Ship busbar type circuit breaker adapter |
| CN104362518A (en) * | 2014-11-28 | 2015-02-18 | 鹤山市辉域成套设备有限公司 | Moulded case circuit breaker mounting seat |
-
2011
- 2011-11-03 CN CN2011204298539U patent/CN202363379U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368078A (en) * | 2013-07-09 | 2013-10-23 | 上海电器科学研究院 | Ship busbar type circuit breaker adapter |
| CN103368078B (en) * | 2013-07-09 | 2016-01-13 | 上海电器科学研究院 | A kind of ship busbar type circuit breaker adapter |
| CN104362518A (en) * | 2014-11-28 | 2015-02-18 | 鹤山市辉域成套设备有限公司 | Moulded case circuit breaker mounting seat |
| CN104362518B (en) * | 2014-11-28 | 2016-11-02 | 鹤山市辉域成套设备有限公司 | A kind of breaker of plastic casing mounting seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Xin Long SBLV Assignor: Xinlong Electric-Appliance Co., Ltd., Anhui Contract record no.: 2014340000038 Denomination of utility model: Connection structure of molded case circuit breaker Granted publication date: 20120801 License type: Exclusive License Record date: 20140313 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20151103 |
|
| EXPY | Termination of patent right or utility model |