CN204834541U - Last static contact of moulded case circuit breaker - Google Patents
Last static contact of moulded case circuit breaker Download PDFInfo
- Publication number
- CN204834541U CN204834541U CN201520668894.1U CN201520668894U CN204834541U CN 204834541 U CN204834541 U CN 204834541U CN 201520668894 U CN201520668894 U CN 201520668894U CN 204834541 U CN204834541 U CN 204834541U
- Authority
- CN
- China
- Prior art keywords
- groove
- connecting portion
- power part
- recess
- electricity
- 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 last static contact of moulded case circuit breaker, its technical scheme main points firstly meet electric portion including what connect gradually, connecting portion and second meet electric portion, first electricity portion and the second of connecing connects that electricity is parallel just to be connected through connecting portion, be equipped with in the second wiring portion the logical flute profile that is the U -shaped become in the lug, the groove of running through that is equipped with on the connecting portion and leads to the groove intercommunication, connecting portion connect electricity portion junction to be equipped with the recess with the second, the recess is located respectively and runs through the groove both sides, through connect department of electricity portion to set up the recess at connecting portion and second, and then at the stamping forming in -process, can so that the edge of the position of recess and stamping workpiece correspond, can avoid the direct impact shearing force of edge to the static contact, avoid connecting portion and second to connect the junction of electricity portion crack cracked condition even to appear in the stamping process, the effectual rejection rate that reduces the product, simultaneously because recess and run through the setting in groove, saved on the one hand more easily by stretch forming among production material and the the stamping process.
Description
Technical field
The utility model relates to field of circuit breakers, and more particularly, it relates to the fixed contact on breaker of plastic casing.
Background technology
Circuit breaker refer to the electric current that can close, carry and cut-off under normal loop condition and can close, the switching device of carrying and the electric current under cut-offfing abnormal loop condition in official hour.
Breaker of plastic casing is the one in circuit breaker, it automatically can cut off electric current after electric current exceedes escape setting, mould shell and refer to the shell being used as device with plastic insulation, be used between insulated conductor and ground metal portion, on breaker of plastic casing, two ends can be provided with binding post, fixed contact is for connecting binding post and moving contact, and then realize the path of whole circuit breaker, fixed contact generally includes the first power part connected successively, connecting portion and the second power part, first power part is parallel with the second power part and connected by connecting portion, and fixed contact is all directly by bending in Z-shaped usually, usual employing punch forming, but due to stamping parts in punching course having seamed edge, and on this seamed edge direct effect and fixed contact, easily occur that the situation of slight crack appears damaging in punching press bending place, increase the percent defective of product, therefore be further improved.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of fixed contact not easily occurring damaging in punch forming process.
For achieving the above object, the utility model provides following technical scheme: the fixed contact on a kind of breaker of plastic casing, comprise the first power part, connecting portion and the second power part that connect successively, described first power part is parallel with the second power part and connected by connecting portion, described second wire connecting portion is provided with the groove taken the shape of the letter U and forms middle projection, described connecting portion be provided be communicated with groove run through groove, described connecting portion and the second power part junction are provided with groove, and described groove lays respectively at and runs through groove both sides.
The utility model is arranged further, and described first power part width is less than the second power part width, described in run through groove be trapezoidal, described in run through the width of groove near the first power part side and be less than opposite side.
The utility model is arranged further, and described first power part and middle projection are provided with screwed hole.
The utility model is arranged further, and described first power part is provided with and connects electric hole.
The utility model is arranged further, and described first power part is provided with stopper slot away from both sides, connecting portion one end.
Compared with prior art, the utility model has the advantage of: by arranging groove at connecting portion and the second power part place, and then in punch forming process, the position of groove can be made corresponding with the seamed edge of stamping parts, seamed edge can be avoided like this in punching course to the direct impact shear power of fixed contact, avoid the junction of connecting portion and the second power part in punching course, occur the situation that slight crack even ruptures, effectively reduce the percent defective of product, simultaneously due to groove and the setting running through groove, save production material on the one hand, junction is made on the other hand to be more prone to be stretched shaping in punching course.
Accompanying drawing explanation
Fig. 1 is the structure chart of the fixed contact embodiment on the utility model breaker of plastic casing;
Fig. 2 is the structure chart of the fixed contact embodiment on the utility model breaker of plastic casing.
Reference numeral: 1, the first power part; 2, the second power part; 3, connecting portion; 4, groove; 5, middle projection; 6, groove is run through; 7, groove; 8, screwed hole; 9, electric hole is connect; 10, stopper slot.
Embodiment
Referring to figs. 1 through Fig. 2, the fixed contact embodiment on the utility model breaker of plastic casing is described further.
Fixed contact on a kind of breaker of plastic casing, comprise the first power part 1, connecting portion 3 and the second power part 1 that connect successively, first power part 1 is parallel with the second power part 1 and connected by connecting portion 3, second wire connecting portion is provided with projection 5 in groove 4 formation taken the shape of the letter U, connecting portion 3 be provided be communicated with groove 4 run through groove 6, connecting portion 3 and the second power part 1 junction are provided with groove 7, and groove 7 lays respectively at and runs through groove 6 both sides.
First by arranging the groove 4 of U-shaped on the second power part 1, not only save material, and when current lead-through, electric current can flow through from the metal plate of the second conductive part 2 of the both sides of the first rectangular opening 23, thus big current is divided into small area analysis, to reach the effect reducing the overall temperature rise of fixed contact, by arranging groove 7 at connecting portion 3 and the second power part 1 place, and then in punch forming process, the position of groove 7 can be made corresponding with the seamed edge of stamping parts, seamed edge can be avoided like this in punching course to the direct impact shear power of fixed contact, avoid the junction of connecting portion 3 and the second power part 1 in punching course, occur the situation that slight crack even ruptures, effectively reduce the percent defective of product, simultaneously due to the setting of groove 7, junction is made to be more prone to be stretched shaping in punching course.
Wherein the first power part 1 width is less than the second power part 1 width, run through the width of groove 6 near the first power part 1 side and be less than opposite side, fixed contact is made to have more aesthetic property like this, to run through groove 6 is set to trapezoidal, under guarantee connecting portion 3 can be stretched shaping prerequisite, more save production material, reduce production cost.
Further, the first power part 1 and middle projection 5 are provided with screwed hole 8, are fixed on breaker of plastic casing by screwed hole 8 by fixed contact, and screwed hole 8 is separately positioned on the first power part 1 and middle projection 5, and fix respectively from two ends, fixed effect is more remarkable.
Further, the first power part 1 is provided with and connects electric hole 9, for the installation of linear columns, the diameter wherein connecing electric hole 9 is the half of the first power part 1 width, like this under the prerequisite not affecting the first power part 1 structural strength, expands the diameter of binding post, reduce and produce material, save cost.
Further, first power part 1 is provided with stopper slot 10 away from both sides, connecting portion 3 one end, by the setting of both sides stopper slot 10, and then on the housing of breaker of plastic casing, be provided with the guide vane end stop coordinated with stopper slot 10, and then when installing hold-down screw, stopper slot 10 can play position-limiting action, avoid occurring that the mobile situation causing not easily installing occurs in operation, be convenient to install, and after installing when loosening appears in later stage hold-down screw, stopper slot 10 still can play certain position-limiting action, adds the stability that fixed contact is installed.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. the fixed contact on a breaker of plastic casing, comprise the first power part, connecting portion and the second power part that connect successively, described first power part is parallel with the second power part and connected by connecting portion, described second wire connecting portion is provided with the groove taken the shape of the letter U and forms middle projection, it is characterized in that: described connecting portion be provided be communicated with groove run through groove, described connecting portion and the second power part junction are provided with groove, and described groove lays respectively at and runs through groove both sides.
2. the fixed contact on breaker of plastic casing according to claim 1, is characterized in that: described first power part width is less than the second power part width, described in run through groove be trapezoidal, described in run through the width of groove near the first power part side and be less than opposite side.
3. the fixed contact on breaker of plastic casing according to claim 1, is characterized in that: described first power part and middle projection are provided with screwed hole.
4. the fixed contact on breaker of plastic casing according to claim 1, is characterized in that: described first power part is provided with and connects electric hole.
5. the fixed contact on breaker of plastic casing according to claim 1, is characterized in that: described first power part is provided with stopper slot away from both sides, connecting portion one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520668894.1U CN204834541U (en) | 2015-08-31 | 2015-08-31 | Last static contact of moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520668894.1U CN204834541U (en) | 2015-08-31 | 2015-08-31 | Last static contact of moulded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204834541U true CN204834541U (en) | 2015-12-02 |
Family
ID=54692112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520668894.1U Expired - Fee Related CN204834541U (en) | 2015-08-31 | 2015-08-31 | Last static contact of moulded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204834541U (en) |
-
2015
- 2015-08-31 CN CN201520668894.1U patent/CN204834541U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20180831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |