CN202513100U - Electric connection structure of circuit breaker - Google Patents
Electric connection structure of circuit breaker Download PDFInfo
- Publication number
- CN202513100U CN202513100U CN 201220065602 CN201220065602U CN202513100U CN 202513100 U CN202513100 U CN 202513100U CN 201220065602 CN201220065602 CN 201220065602 CN 201220065602 U CN201220065602 U CN 201220065602U CN 202513100 U CN202513100 U CN 202513100U
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- CN
- China
- Prior art keywords
- conductive elastic
- collet
- electrically conductive
- slotting tool
- circuit breaker
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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 relates to an electric connection structure of a switch device. The electric connection structure comprises an insertion pole, a bus seat, an elastic collet, and conductive elastic pieces, wherein the conductive elastic pieces are arranged according to one of the following structures or arbitrary combinations of the following structures: at least one conductive elastic piece is arranged between the elastic collet and the insertion pole; at least one conductive elastic piece is arranged between the elastic collet and the bus seat; at least one conductive elastic piece is arranged in the elastic collet and between the insertion pole and the bus seat; at least one conductive elastic piece is arranged on the elastic collet; at least one conductive elastic piece is arranged on the insertion pole; and at least one conductive elastic piece is arranged on the bus seat. The electric connection structure of the utility model has the advantages of increasing the conductive area of the circuit breaker, enhancing the current carrying capacity of the circuit breaker, reducing the temperature rise, and decreasing the machining precision and manufacturing cost without increasing the installation space; moreover, the electric connection structure can ensure a good contact and increase the deviation correcting capability even in the presence of positional deviation when the insertion pole or the bus seat is inserted into the elastic collet.
Description
Technical field
The utility model relates to a kind of electric connection structure of withdrawable circuit breaker, belongs to the low voltage electrical apparatus technology field.
Background technology
Along with the continuous development of Chinese national economy, the transmission and distribution network capacitance also constantly increases.Omnipotent breaker occupies in low-voltage distribution system and important effect, and it is used for distributing electric energy and protection circuit and power-supply device, makes it avoid harm such as overload, under voltage, short circuit, earth fault.Simultaneously, the user also in continuous rising, wherein high-performance, miniaturization have become the developing direction of omnipotent breaker to the demand of omnipotent breaker.
Being electrically connected between the body of withdrawable circuit breaker and the drawer is through the taking out, insert and realize of conductive structure, conductive structure generally includes slotting tool, busbar seat and comprises the collet of at least one folder mouthful.Slotting tool is installed on the body of withdrawable circuit breaker, is connected with the dynamic and static contact of circuit breaker; The busbar seat is installed on the drawout chassis, and the one of which end is connected with collet, and the other end is connected with the external bus-bar of circuit breaker; Collet is used to connect slotting tool and busbar seat.Can find out that the quality of connection of contact and slotting tool, busbar seat is with the loaded current ability that has influence on circuit breaker and the level of temperature rise.For this reason, how to improve the quality of connection of collet and slotting tool, busbar seat, improve the bearing capacity of circuit breaker, reduce temperature rise, guarantee high reliability, the fail safe of circuit breaker, become each circuit breaker producer emphasis of design.
The electric connection structure of the pull-out type universal circuit breaker of existing public use is as shown in Figure 1; The collet 2 of this scheme has former and later two folder mouths; In the folder mouth, conducting strip 5 was the face contact with contacting of slotting tool 1, busbar seat 3 before and after slotting tool 1 inserted respectively with busbar seat 3.According to this scheme; If the size of slotting tool, collet, busbar seat guarantees enough precision, and slotting tool keeps accurately inserting folder mouthful according to design size, and conducting strip can keep good face to contact with slotting tool, busbar seat so; If error appears in three's machining accuracy or even very little skew takes place to insert the process of pressing from both sides mouth at slotting tool; Slotting tool will lever up conducting strip, makes conducting strip and contacting of slotting tool, busbar seat become the line contact, and conductive area sharply reduces; Cause the circuit breaker conductive capability to reduce, temperature rise is too high.
The electric connection structure of the pull-out type universal circuit breaker of another existing public use is as shown in Figure 2; The contact-making surface of conducting strip 5 is an arc surface in the collet 2; Even slotting tool 1, busbar seat 3 squint in the folder that inserts collet 2 is made a slip of the tongue journey like this, slotting tool, busbar seat and conducting strip still can keep in touch, but contact is the line contact; Conductive area is little, and caloric value is big.For improving the bearing capacity of this electric connection structure, guarantee that simultaneously temperature rise is unlikely to too high, or increase the length of conducting strip, or increase the thickness of conducting strip.The length that increases conducting strip causes the volume of circuit breaker to increase, and runs counter to the miniaturization of circuit breaker, increases the thickness of conducting strip, and consumption copper material amount is big, improves manufacturing cost.
The electric connection structure of the pull-out type universal circuit breaker of another existing public use is as shown in Figure 3; One end in contact face of conducting strip 5 is an exterior arc surface; Form excellent contact with slotting tool 1,, even can contact by formation face if slotting tool and conducting strip keep enough machining accuracies; The other end contact-making surface of conducting strip is an inner arc surface, and the contact-making surface with conducting strip on the busbar seat 3 is an exterior arc surface, and both form good face contact.Collet can rotate around the exterior arc surface of busbar seat in addition, has deviation-correcting function.But; If even the processing dimension of slotting tool, collet error occurs or presss from both sides the very little skew of Cheng Fasheng of making a slip of the tongue in the slotting tool insertion; Slotting tool will lever up conducting strip, makes conducting strip and contacting of slotting tool all become the line contact, and conductive area sharply reduces; Cause the circuit breaker conductive capability to reduce, temperature rise is too high.
Can find out that by such scheme each circuit breaker manufacturing firm has adopted kinds of schemes,, improve the centering capacity of collet, improve the current capacity of circuit breaker, reduce temperature rise through increasing the contact area of collet and slotting tool, busbar seat.Although these schemes have produced certain beneficial effect, still have further improved space and necessity.
The utility model content
The purpose of the utility model provides a kind of electric connection structure of withdrawable circuit breaker, can be implemented under the constant condition of installing space, increases the conductive area of collet and slotting tool, busbar seat, improves the current capacity of circuit breaker; Can guarantee simultaneously reliable electrical contact between collet and slotting tool, the busbar seat again.
For this reason, the utility model adopts following technical scheme:
A kind of electric connection structure of circuit breaker comprises slotting tool, busbar seat and collet, and slotting tool inserts collet, and the busbar seat inserts collet or is electrically connected with collet, it is characterized in that:
At least one electrically conductive elastic spare is set.
Further, adopt one of following structure that electrically conductive elastic spare is set, or electrically conductive elastic spare be set by the combination in any of following structure:
Between collet and the slotting tool at least one electrically conductive elastic spare is set;
Between collet and the busbar seat at least one electrically conductive elastic spare is set;
Between slotting tool and the busbar seat, collet is with interior at least one electrically conductive elastic spare that is provided with;
At least one electrically conductive elastic spare is set on the collet;
At least one electrically conductive elastic spare is set on the slotting tool;
On the busbar seat at least one electrically conductive elastic spare is set.
Further:
Said electrically conductive elastic spare is oblique coil spring.
Said electrically conductive elastic spare is a flat spring.
The cross section of said electrically conductive elastic spare is a polygon circular, oval or the band fillet.
Said collet has an one-tenth at least || the folder mouth of shape, H shape or U-shaped.
Said slotting tool is in the process of inserting the folder mouth, and electrically conductive elastic spare is extruded the back and contacts with the conducting strip of slotting tool, collet.
Said busbar seat is in the process of inserting the folder mouth, and electrically conductive elastic spare is extruded the back and contacts with the conducting strip of busbar seat, collet.
The beneficial effect of the utility model is:
Increase the conductive area of circuit breaker, improve the current capacity of circuit breaker, reduce temperature rise, reduce machining accuracy and manufacturing cost.Do not increase simultaneously installing space.
Utilize the compressibility of electrically conductive elastic spare, guarantee slotting tool or busbar seat in the process of inserting collet,, improve the centering capacity of circuit breaker even the location deviation still can guarantee excellent contact between slotting tool, busbar seat and the conducting strip.
Description of drawings
Fig. 1,2,3 is disclosed electric connection structure sketch map;
Fig. 4 is the structural representation of the utility model embodiment;
Fig. 5 is the structural representation of the utility model embodiment collet;
Fig. 6 is the structural representation of the utility model embodiment conducting strip;
Fig. 7 is the structural representation of the utility model embodiment slotting tool;
Fig. 8 is the structural representation of the utility model embodiment busbar seat;
Fig. 9,10,11,12,13,14,15,16,17 is the structural representation of other embodiment of the utility model.
Among the figure: 1 slotting tool, 11 joint faces, 12 slotting tool holes, 13 openings, 2 collets, 3 busbar seats, 31 joint faces, 32 busbar seat holes, 33 joint faces, 4 electrically conductive elastic spares, 41 joint faces, 5 conducting strips, 51 joint faces, 52 joint faces, 53 conduction film perforations, 54 contact-making surfaces, 6 elastic components, 7 strutting pieces, 8 fixed frames, 9 folder mouths.
Embodiment
The utility model is the electric connection structure on a kind of switching device; Electric connection structure especially on a kind of withdrawable circuit breaker comprises slotting tool, busbar seat and collet, and slotting tool inserts collet; The busbar seat inserts collet or is electrically connected with collet, it is characterized in that:
At least one electrically conductive elastic spare is set.
A kind of electric connection structure of circuit breaker is characterized in that adopting one of following structure to be provided with or by the combination in any setting of following structure:
Between collet and the slotting tool at least one electrically conductive elastic spare is set;
Between collet and the busbar seat at least one electrically conductive elastic spare is set;
Between slotting tool and the busbar seat, collet is with interior at least one electrically conductive elastic spare that is provided with;
At least one electrically conductive elastic spare is set on the collet;
At least one electrically conductive elastic spare is set on the slotting tool;
On the busbar seat at least one electrically conductive elastic spare is set.
Further:
Said electrically conductive elastic spare is oblique coil spring.
Said electrically conductive elastic spare is a flat spring.
The cross section of said electrically conductive elastic spare is a polygon circular, oval or the band fillet.
Said collet has an one-tenth at least || the folder mouth of shape, H shape or U-shaped.
Said slotting tool is in the process of inserting the folder mouth, and electrically conductive elastic spare is extruded the back and contacts with the conducting strip of slotting tool, collet.
Said busbar seat is in the process of inserting the folder mouth, and electrically conductive elastic spare is extruded the back and contacts with the conducting strip of busbar seat, collet.
Below in conjunction with accompanying drawing the utility model is described in detail.
With reference to figure 4-8, the arrangements of electric connection of the withdrawable circuit breaker of the utility model comprises the collet of being made up of conducting strip 5, elastic component 6, strutting piece 7, fixed frame 82, and slotting tool 1 and busbar seat 3.Wherein:
Conducting strip 5 is the bar shaped lamellar body, and joint face 51 places that the rear portion of conducting strip 5 is connected with the side of slotting tool are provided with conduction film perforation 53, and the axis normal of conduction film perforation 53 is in the plane of the lamellar body of conducting strip 5.The 52nd, be positioned at the joint face that the front portion of conducting strip 5 is connected with the side of busbar seat, the 54th, be positioned on the front end face of conducting strip 5 and be positioned at the contact-making surface of joint face 33 upper ends of busbar seat 3.
As shown in Figure 7, joint face 11 places of two sides are provided with slotting tool hole 12 about slotting tool 1, and the parallel axes in slotting tool hole 12 is in the joint face 11 of slotting tool 1 and vertical with the direction of insertion of slotting tool 1.
As shown in Figure 8, joint face 31 places of two sides are provided with busbar seat hole 32 about busbar seat 3, and the parallel axes in busbar seat hole 32 is in the joint face 31 of busbar seat and vertical with the direction of insertion of slotting tool.The 33rd, be positioned at the positive contact-making surface of busbar seat on the busbar seat.
As shown in Figure 5, conducting strip 5 paired symmetries are positioned over strutting piece 7 both sides, and elastic component 6 is positioned over the outside of conducting strip 5, and fixed frame 8 is enclosed within the outside of elastic component 6.Under the restriction of fixed frame 8, elastic component 6 produces deformation and is pressed on the conducting strip 5, thereby forms two folder mouths 9 that have precompression in the rear and front end of collet 2.
Shown in Fig. 4-8; Be placed with electrically conductive elastic spare 4 respectively in hole 12, hole 32, the hole 53; Electrically conductive elastic spare 4 is oblique coil spring; Between conducting strip 5 that symmetry is placed and strutting piece 7, also be placed with electrically conductive elastic spare 4, in addition, the contact-making surface 54 of the front end face of conducting strip 5 and between the positive joint face 33 of busbar seat 3 same placement electrically conductive elastic spare 4.The shape in the line footpath of above electrically conductive elastic spare 4, middle footpath and cross section all maybe be different, look through the size of electric current and decide.It is emphasized that the maximum outside diameter that is positioned over the electrically conductive elastic spare 4 in hole 12, hole 32, the hole 53 diameter, that is to say that the part of above-mentioned electrically conductive elastic spare 4 exceeds the breach in above-mentioned hole greater than the hole of correspondence.
During the utility model work; Slotting tool 1 inserts respectively in the two ends folder mouth 9 of collet 2 with busbar seat 3, and the thickness of the thickness of the joint face 11 of slotting tool 1 and the joint face 31 of busbar seat 3 is all greater than the minimum dimension of pressing from both sides mouth 9, along with the insertion of slotting tool 1 or busbar seat 3; Folder mouth 9 expands outwardly; The deformation of aggravation elastic component 6, thus the joint face 51,52 of compressing conducting strip 5 is pressed in respectively on the joint face 31 of joint face 11 and busbar seat 3 of slotting tool 1, and electrically conductive elastic spare 4 is in the compressing generation deformation down with the busbar seat of the compressing of conducting strip or slotting tool 1; Tightly be attached on the joint face of slotting tool 1, conducting strip 5 and busbar seat 3, form electrical connection; Simultaneously, the distance of the distance of slotting tool 1 to strutting piece 7 and busbar seat 3 to conducting strip 5 is also reducing, and electrically conductive elastic spare 4 makes slotting tool 1 form with conducting strip 5 with conducting strip 5 and busbar seat 3 and is electrically connected under the extruding of slotting tool 1 and busbar seat 3.
In the utility model electric connection structure, utilize the compressibility of electrically conductive elastic spare to increase conductive area, in the hope of the current capacity that improves circuit breaker, centering capacity, reduction machining accuracy and the manufacturing cost that reduces temperature rise, raising circuit breaker.
Among other embodiment of the utility model, following structural change can be arranged: increase and decrease the number of oblique coil spring, change cross sectional shape, line footpath, size of oblique coil spring etc., like Fig. 9,10,11,12,13, shown in 14.
Shown in figure 15; The electrically conductive elastic spare 4 of the another embodiment of the utility model is a flat spring; One end of electrically conductive elastic spare 4 is connected through strutting piece 7 with conducting strip 5; The other end of electrically conductive elastic spare 4 is bent into the joint face 41 with certain angle, and electrically conductive elastic spare 4 symmetries are positioned in the folder mouth 9, and the insertion end of slotting tool 1 is provided with opening 13 along joint face 11 parallel directions.During work, slotting tool 1 inserts in folder mouthful 9 processes, and the opening 13 on the slotting tool 1 is connected with joint face 41, and along with the lasting insertion of slotting tool 1, electrically conductive elastic spare 4 is close to opening 13 because of being squeezed, and increases the contact pressure of electrically conductive elastic spare 4 and slotting tool 1.
As replenishing of present embodiment, electrically conductive elastic spare 4 adopts the mode of present embodiment to be connected with busbar seat 3, and is shown in figure 16.Perhaps electrically conductive elastic spare 4 is flat spring and the tiltedly combination of coil spring, and is shown in figure 17.
Through the description of applicant to the foregoing description; To help to understand the utility model more, and the good effect of the utility model is embodied more, but embodiment should not be regarded as the utility model protection range is limited to some extent; Therefore; For a person skilled in the art, under the situation that does not deviate from the utility model spirit and scope, it is carried out various conspicuous changes, all should be within the protection range of the utility model.
Claims (8)
1. the electric connection structure of a circuit breaker comprises slotting tool, busbar seat and collet, and slotting tool inserts collet, and the busbar seat inserts collet or is electrically connected with collet, it is characterized in that:
At least one electrically conductive elastic spare is set.
2. the electric connection structure of circuit breaker as claimed in claim 1 is characterized in that:
Adopt one of following structure that said electrically conductive elastic spare is set, or said electrically conductive elastic spare be set by the combination in any of following structure:
Between collet and the slotting tool at least one electrically conductive elastic spare is set;
Between collet and the busbar seat at least one electrically conductive elastic spare is set;
Between slotting tool and the busbar seat, collet is with interior at least one electrically conductive elastic spare that is provided with;
At least one electrically conductive elastic spare is set on the collet;
At least one electrically conductive elastic spare is set on the slotting tool;
On the busbar seat at least one electrically conductive elastic spare is set.
3. the electric connection structure of circuit breaker as claimed in claim 1 is characterized in that:
Said electrically conductive elastic spare is oblique coil spring.
4. the electric connection structure of circuit breaker as claimed in claim 1 is characterized in that:
Said electrically conductive elastic spare is a flat spring.
5. the electric connection structure of circuit breaker as claimed in claim 1 is characterized in that:
The cross section of said electrically conductive elastic spare is a polygon circular, oval or the band fillet.
6. the electric connection structure of circuit breaker as claimed in claim 1 is characterized in that:
Said collet has an one-tenth at least || the folder mouth of shape, H shape or U-shaped.
7. the electric connection structure of circuit breaker as claimed in claim 1 is characterized in that:
Said slotting tool is in the process of inserting the folder mouth, and electrically conductive elastic spare is extruded the back and contacts with the conducting strip of slotting tool, collet.
8. the electric connection structure of circuit breaker as claimed in claim 1 is characterized in that:
Said busbar seat is in the process of inserting the folder mouth, and electrically conductive elastic spare is extruded the back and contacts with the conducting strip of busbar seat, collet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220065602 CN202513100U (en) | 2012-02-24 | 2012-02-24 | Electric connection structure of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220065602 CN202513100U (en) | 2012-02-24 | 2012-02-24 | Electric connection structure of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202513100U true CN202513100U (en) | 2012-10-31 |
Family
ID=47065564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220065602 Expired - Lifetime CN202513100U (en) | 2012-02-24 | 2012-02-24 | Electric connection structure of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202513100U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094011A (en) * | 2013-02-25 | 2013-05-08 | 北京人民电器厂有限公司 | Electric connection structure of switch device |
| CN103295850A (en) * | 2012-02-24 | 2013-09-11 | 北京人民电器厂有限公司 | Electric connection structure of circuit breaker |
| CN112614754A (en) * | 2020-12-10 | 2021-04-06 | 平高集团有限公司 | Handcart type direct current circuit breaker and connecting contact thereof |
-
2012
- 2012-02-24 CN CN 201220065602 patent/CN202513100U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295850A (en) * | 2012-02-24 | 2013-09-11 | 北京人民电器厂有限公司 | Electric connection structure of circuit breaker |
| CN103094011A (en) * | 2013-02-25 | 2013-05-08 | 北京人民电器厂有限公司 | Electric connection structure of switch device |
| CN103094011B (en) * | 2013-02-25 | 2016-02-10 | 北京人民电器厂有限公司 | A kind of electric connection structure of switching device |
| CN112614754A (en) * | 2020-12-10 | 2021-04-06 | 平高集团有限公司 | Handcart type direct current circuit breaker and connecting contact thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |