CN202651036U - Static contact member of circuit breaker - Google Patents
Static contact member of circuit breaker Download PDFInfo
- Publication number
- CN202651036U CN202651036U CN 201220343758 CN201220343758U CN202651036U CN 202651036 U CN202651036 U CN 202651036U CN 201220343758 CN201220343758 CN 201220343758 CN 201220343758 U CN201220343758 U CN 201220343758U CN 202651036 U CN202651036 U CN 202651036U
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- Prior art keywords
- fixed contact
- rectangular opening
- circuit breaker
- arc
- striking
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Abstract
The utility model discloses a static contact member of a circuit breaker. The static contact member comprises a first electric connection part arranged on the left end, a second electric connection part arranged on the right end and provided with a static contact, and a contact main body formed by an electric connection part for connecting the first electric connection part with the second electric connection part, wherein an arc guide angle is fixed on the contact main body and comprises an arc guide plate and a connection plate; the arc guide plate comprises a first arc guide area horizontally arranged on the right side of the static contact and a second arc guide area connected with the right end of the first arc guide area and extending towards the right upside; the upper surface of the first arc guide area is lower than the upper surface of the static contact or in the same plane with the upper surface of the static contact, and the top of the second arc guide area is higher than the upper surface of the static contact. The structure of the static contact is more reasonable, the electric arc generated between static, movable contacts is more quickly and smoothly guided into an arc extinguishing device by the above arc guide angle, the dead time of the electric arc on the static, movable contacts is greatly shortened, the arc guide effect is good and the electric arc is facilitated to be extinguished.
Description
Technical field
The utility model belongs to the breaker structure design field, is specifically related to a kind of fixed contact of circuit breaker.
Background technology
Patent documentation CN202172052U discloses a kind of fixed contact of circuit breaker, its design feature is: the close link place in its working end is provided with installing hole, the middle part of described working end arranges through-hole groove near the installing hole place, the alloy conductive contact is fixedly installed on the conducting element working end, and be positioned at the opposite side of the relative installing hole of through-hole groove, press close to arrange with through-hole groove, described arc striking piece is arranged by the sheet metal bending and consists of, consist of a minor face and a long limit after its bending, obtain the arc striking piece of V-arrangement, the bottom of described minor face is provided with erection column, this erection column is installed in the installing hole of working end, the top on described striking length of a film limit is contained in the through-hole groove, and the top width on described striking length of a film limit is greater than the width of alloy conductive contact.Undeniablely be, this patent documentation is by adopting technique scheme, to the arc end that solves the arc striking piece on traditional fixed contact and produce striking distance between the alloy conductive contact of electric arc, the striking path is obstructed, electric arc can not enter arc-control device effectively and quickly, and the problem that the striking effect of arc striking piece can descend along with the wearing and tearing of contact has certain good effect; But still there are some problems: because used arc striking piece adopts v-shaped structure in the above-mentioned patent documentation, and the electric arc resistance that the dynamic/static contact of circuit breaker produces when separating is very large, easily rebound after electric arc and the arc striking piece collision and go back, thereby cause electric arc still to be difficult for entering in the arc control device, the arcing standstill time that produces between dynamic/static contact is elongated, arcing time when having increased the circuit breaker disjunction, the striking effect is still not ideal enough, is unfavorable for blow-out.
The utility model content
For patent documentation CN202172052U above shortcomings, the purpose of this utility model provides a kind of fixed contact of circuit breaker, the structure of the fixed contact of this kind structure more reasonable and by the arc leading angle on it can be more fast, more smoothly the electric arc that produces between dynamic/static contact is introduced in the arc-control device, greatly shorten electric arc in the dead time at dynamic/static contact place, striking is effective, is beneficial to extinguishing of electric arc.
The technical scheme that realizes the utility model purpose is:
A kind of fixed contact of circuit breaker comprises by the first power part that is used for being electrically connected with external power supply that is positioned at left end, is positioned at the contact body that right-hand member the second power part that is provided with fixed contact and the electrical connection section that is connected the first power part and the second power part consist of;
Be fixed with arc leading angle on the described contact body;
Described arc leading angle comprises run-on tab and the connecting plate that is connected run-on tab and contact body; Described run-on tab comprises and is positioned at the fixed contact right side and along horizontally disposed the first striking district and the second striking district of being connected with the right end in the first striking district and extending towards the upper right side;
The upper surface in described the first striking district is lower than the upper surface of fixed contact or in the same plane with the upper surface of fixed contact, and the top in described the second striking district exceeds the upper surface of fixed contact.
In the technique scheme, the middle part of described the second power part is provided be used to the supporting bracket that fixed contact is set with at the first rectangular opening of supporting bracket both sides and the second rectangular opening between supporting bracket and electrical connection section, described the second rectangular opening and described the first rectangular opening UNICOM;
Described the first striking district is arranged in described the second rectangular opening.
In the technique scheme, be provided with the 3rd rectangular opening at described electrical connection section middle part, an end of described the 3rd rectangular opening and described the second rectangular opening UNICOM, its other end extends to the first power part.
In the technique scheme, the upper end of described connecting plate is connected with run-on tab, and its bottom forms the lug boss to downward-extension, is provided with riveted holes in described contact body, the lug boss of described connecting plate and riveted holes riveted joint.
In the technique scheme, the quantity of described lug boss is two, and two described lug bosses are positioned at respectively the two ends of described connecting plate;
The quantity of described riveted holes is two, and two riveted holes lay respectively at the both sides of described the 3rd rectangular opening, a described lug boss and corresponding riveted holes riveted joint.
In the technique scheme, the angle in described the first striking district and the second striking district is between 130 degree are spent to 170.
In the technique scheme, the upper surface of the upper surface of described supporting bracket and described the second power part is in the same plane.
In the technique scheme, from directly over look down, described supporting bracket is " protruding " font; Described fixed contact is arranged on supporting bracket near an end of the second rectangular opening.
In the technique scheme, the end that described connecting plate is not connected with contact body is connected near fixed contact one end with the first striking district or is connected with the end near the first power part in the second striking district.
In the technique scheme, described arc leading angle is through twice bending and molding with a sheet metal;
Be provided with circle at described the first power part and connect electric hole.
The utlity model has positive effect:
(1) arc leading angle that is arranged on the fixed contact in the utility model comprises run-on tab and the connecting plate that is connected run-on tab and contact body; Described run-on tab comprises and is positioned at the fixed contact right side and along horizontally disposed the first striking district and the second striking district of being connected with the right end in the first striking district and extending towards the upper right side; The upper surface in described the first striking district is lower than the upper surface of fixed contact or in the same plane with the upper surface of fixed contact, and the top in described the second striking district exceeds the upper surface of fixed contact.By adopting said structure, arc leading angle is when striking, electric arc enters arc-control device by its horizontally disposed the first striking district striking start of a race by the second striking district that is obliquely installed, because bounce-back that the transition in the first striking district has been avoided electric arc directly and the second striking district bumps, can be more fast, smoothly the electric arc that produces between dynamic/static contact is introduced in the arc-control device, greatly shorten electric arc in the dead time at dynamic/static contact place, striking is effective, be beneficial to extinguishing of electric arc, disclosed fixed contact in the patent documentation CN202172052U, its structure is more reasonable.
(2) be provided with the 3rd rectangular opening at described electrical connection section middle part in the utility model, an end of described the 3rd rectangular opening and described the second rectangular opening UNICOM, its other end extends to the first power part.Owing to be provided with the 3rd rectangular opening at electrical connection section, thereby can avoid arc leading angle that electric arc is drawn the surface that electrical connection section burns in rear arc center, if the 3rd rectangular opening is not set, arc center's part that arc leading angle draws can touch the surface of electrical connection section, because the temperature of arc center's part is very high, can make the surface of electrical connection section produce the metal vaporization, can make the metallic Enrichment in the electric arc after the metal vaporization, thereby increase the conductivity of gas, reduce the dielectric strength between the metal gate sheet in the arc-control device, easily cause arc through to restrike, therefore the setting of the 3rd rectangular opening is necessary.
Description of drawings
Fig. 1 is a kind of structural representation of fixed contact in the utility model;
Fig. 2 is a kind of structural representation of contact body in the utility model;
Fig. 3 is a kind of forward view of Fig. 2;
Fig. 4 is a kind of structural representation of arc leading angle in the utility model;
Fig. 5 is a kind of forward view of Fig. 4;
Fig. 6 is a kind of effect schematic diagram of fixed contact when disconnecting in the utility model;
Fig. 7 is the current direction schematic diagram of fixed contact when conducting in the utility model;
Reference numeral shown in the figure is:
1-the first power part; 11-connects electric hole; 2-the second power part; The 21-fixed contact; The 22-supporting bracket; 23-the first rectangular opening; 24-the second rectangular opening; The 3-electrical connection section; 31-the 3rd rectangular opening; The 4-contact body; The 41-riveted holes; The 5-arc leading angle; The 51-run-on tab; The 52-connecting plate; 53-the first striking district; 54-the second striking district; The 55-lug boss; The 6-moving contact.
Embodiment
(embodiment 1)
See that Fig. 1 to Fig. 7 has shown a kind of embodiment of the present utility model.Wherein, Fig. 1 is a kind of structural representation of fixed contact in the utility model; Fig. 2 is a kind of structural representation of contact body in the utility model; Fig. 3 is a kind of forward view of Fig. 2; Fig. 4 is a kind of structural representation of arc leading angle in the utility model; Fig. 5 is a kind of forward view of Fig. 4; Fig. 6 is a kind of effect schematic diagram of fixed contact when disconnecting in the utility model; Fig. 7 is the current direction schematic diagram of fixed contact when conducting in the utility model.
As shown in Figure 1, a kind of fixed contact of circuit breaker comprises by the first power part 1 that is used for being electrically connected with external power supply that is positioned at left end, is positioned at the contact body 4 that right-hand member the second power part 2 that is provided with fixed contact 21 and the electrical connection section 3 that is connected the first power part 1 and the second power part 2 consist of; Be provided with circle at described the first power part 1 and connect electric hole 11; Be fixed with arc leading angle 5 on the described contact body 4.
In conjunction with Fig. 1 and shown in Figure 4, in the present embodiment, described arc leading angle 5 comprises run-on tab 51 and is connected the connecting plate 52 of run-on tab 51 with contact body 4; Described run-on tab 51 comprises and is positioned at fixed contact 21 right sides and along horizontally disposed the first striking district 53 and the second striking district 54 of being connected with the first striking district 53 right ends and extending towards the upper right side; The upper surface in described the first striking district 53 is lower than the upper surface of fixed contact 21 or in the same plane with the upper surface of fixed contact 21, and the top in described the second striking district 54 exceeds the upper surface of fixed contact 21; The included angle A in described the first striking district 53 and the second striking district 54 is between 130 degree are spent to 170, as shown in Figure 5.
Because the setting of said structure, arc leading angle 5 is when striking, electric arc enters arc-control device by its horizontally disposed the first striking district 53 striking starts of a race by the second striking district 54 that is obliquely installed, because bounce-back that the transition in the first striking district 53 has been avoided electric arc directly and the second striking district 54 bumps, specifically can be referring to Fig. 6, thereby arc leading angle 5 adopts, and structure can be more quick in the present embodiment, smoothly the electric arc that produces between moving contact 6 and fixed contact is introduced in the arc-control device, greatly shorten electric arc in the dead time at moving contact 6 and fixed contact place, striking is effective, be beneficial to extinguishing of electric arc, disclosed fixed contact in the patent documentation CN202172052U, its structure is more reasonable.
As shown in Figure 2, the middle part of described the second power part 2 is provided be used to the supporting bracket 22 that fixed contact 21 is set with at the first rectangular opening 23 of supporting bracket 22 both sides and the second rectangular opening 24 between supporting bracket 22 and electrical connection section 3, described the second rectangular opening 24 and described the first rectangular opening 23 UNICOMs; Described the first striking district 53 is arranged in described the second rectangular opening 24, in the present embodiment by the first rectangular opening 23 being set and the second rectangular opening 24 not only can be saved 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, thereby with being divided into of large electric current of little electric current, to reach the effect that reduces the whole temperature rise of fixed contact, the current direction schematic diagram during conducting can be referring to Fig. 7.
Be provided with the 3rd rectangular opening 31 at described electrical connection section 3 middle parts, an end of described the 3rd rectangular opening 31 and described the second rectangular opening 24 UNICOMs, its other end extends to the first power part 1; Owing to be provided with the 3rd rectangular opening 31 at electrical connection section 3, thereby can avoid arc leading angle 5 that electric arc is drawn the surface that electrical connection section 3 burns in rear arc center, if the 3rd rectangular opening 31 is not set, arc center's part that arc leading angle 5 draws can touch the surface of electrical connection section 3, because the temperature of arc center's part is very high, can make the surface of electrical connection section 3 produce the metal vaporization, can make the metallic Enrichment in the electric arc after the metal vaporization, thereby increase the conductivity of gas, reduce the dielectric strength between the metal gate sheet in the arc-control device, easily cause arc through to restrike, therefore the setting of the 3rd rectangular opening is necessary.
The upper end of described connecting plate 52 is connected with run-on tab 51, and its bottom forms the lug boss 55 to downward-extension, is provided with riveted holes 41 in described contact body 4, the lug boss 55 of described connecting plate 52 and riveted holes 41 riveted joints.
In the present embodiment, described connecting plate 52 upper ends be the end that is not connected with contact body 4 of connecting plate 52 with the end in the second striking district 54 of run-on tab 51 namely the end near the first power part 1 in the second striking district 54 be connected, described riveted holes 41 is arranged on the second power part on 2, the lug boss of described connecting plate 52 bottoms and riveted holes 41 riveted joints that are arranged on the second power part 2, in practical operation, also riveted holes 41 can be arranged on the electrical connection section 3, this moment, described connecting plate 52 upper ends namely were connected near an end of the first power parts 1 in the second striking district 54 with the end in the second striking district 54 of run-on tab 51, and the lug boss of described connecting plate 52 bottoms and the riveted holes that is arranged on the electrical connection section 3 are riveted.
Distortion as said structure, also can adopt following structure: described connecting plate 52 upper ends are that the end that connecting plate 52 is not connected with contact body 4 is connected with an end of the close fixed contact 21 in the first striking district 53 of run-on tab 51, described riveted holes 41 is arranged on the second power part on 2, the lug boss 55 of described connecting plate 52 bottoms and riveted holes 41 riveted joints that are arranged on the second power part 2, this kind structure does not provide corresponding accompanying drawing in Figure of description.
On the basis of said structure, the quantity of described lug boss 55 is two, and two described lug bosses 55 lay respectively at the two ends of described connecting plate 52; The quantity of described riveted holes 41 is two, and two riveted holes 41 lay respectively at the both sides of described the 3rd rectangular opening 31, and a described lug boss 55 is riveted with a corresponding riveted holes 41.
The upper surface of the upper surface of described supporting bracket 22 and described the second power part 2 is in the same plane.
Referring to Fig. 3, from directly over look down, described supporting bracket 22 is " protruding " font; Described fixed contact 21 is arranged on supporting bracket 22 near an end of the second rectangular opening 24.
Described arc leading angle 5 in the present embodiment is through twice bending and molding with a sheet metal.
Obviously, above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to execution mode of the present utility model.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 these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection range of the present utility model.
Claims (10)
1. the fixed contact of a circuit breaker comprises by the first power part (1) that is used for being electrically connected with external power supply that is positioned at left end, is positioned at right-hand member and is provided with second power part (2) of fixed contact (21) and is connected the first power part (1) and the contact body (4) of the electrical connection section (3) of the second power part (2) formation;
Be fixed with arc leading angle (5) on the described contact body (4);
It is characterized in that:
Described arc leading angle (5) comprises run-on tab (51) and is connected the connecting plate (52) of run-on tab (51) with contact body (4); Described run-on tab (51) comprises and is positioned at fixed contact (21) right side and along horizontally disposed the first striking district (53) and the second striking district (54) of being connected with the right end in the first striking district (53) and extending towards the upper right side;
The upper surface in described the first striking district (53) is lower than the upper surface of fixed contact (21) or in the same plane with the upper surface of fixed contact (21), and the top in described the second striking district (54) exceeds the upper surface of fixed contact (21).
2. the fixed contact of circuit breaker according to claim 1, it is characterized in that: the middle part of described the second power part (2) be provided be used to the supporting bracket that fixed contact (21) are set (22) and be positioned at first rectangular opening (23) of supporting bracket (22) both sides and be positioned at supporting bracket (22) and electrical connection section (3) between the second rectangular opening (24), described the second rectangular opening (24) and described the first rectangular opening (23) UNICOM;
Described the first striking district (53) is arranged in described the second rectangular opening (24).
3. the fixed contact of circuit breaker according to claim 2, it is characterized in that: be provided with the 3rd rectangular opening (31) at described electrical connection section (3) middle part, one end of described the 3rd rectangular opening (31) and described the second rectangular opening (24) UNICOM, its other end extends to the first power part (1).
4. the fixed contact of circuit breaker according to claim 3, it is characterized in that: the upper end of described connecting plate (52) is connected with run-on tab (51), its bottom forms the lug boss (55) to downward-extension, be provided with riveted holes (41) in described contact body (4), the lug boss (55) of described connecting plate (52) and riveted holes (41) riveted joint.
5. the fixed contact of circuit breaker according to claim 4, it is characterized in that: the quantity of described lug boss (55) is two, two described lug bosses (55) lay respectively at the two ends of described connecting plate (52);
The quantity of described riveted holes (41) is two, and two riveted holes (41) lay respectively at the both sides of described the 3rd rectangular opening (31), a described lug boss (55) and a corresponding riveted holes (41) riveted joint.
6. the fixed contact of each described circuit breaker in 5 according to claim 1 is characterized in that: the angle in described the first striking district (53) and the second striking district (54) at 130 degree between 170 degree.
7. the fixed contact of each described circuit breaker in 5 according to claim 2, it is characterized in that: the upper surface of the upper surface of described supporting bracket (22) and described the second power part (2) is in the same plane.
8. the fixed contact of circuit breaker according to claim 7 is characterized in that: from directly over look down, described supporting bracket (22) is " protruding " font;
Described fixed contact (21) is arranged on supporting bracket (22) near an end of the second rectangular opening (24).
9. the fixed contact of circuit breaker according to claim 6 is characterized in that: the end that described connecting plate (52) is not connected with contact body (4) is connected near fixed contact (21) one ends with the first striking district (53) or is connected with an end of close first power part (1) in the second striking district (54).
10. the fixed contact of circuit breaker according to claim 1, it is characterized in that: described arc leading angle (5) is through twice bending and molding with a sheet metal;
Be provided with circle at described the first power part (1) and connect electric hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220343758 CN202651036U (en) | 2012-07-16 | 2012-07-16 | Static contact member of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220343758 CN202651036U (en) | 2012-07-16 | 2012-07-16 | Static contact member of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202651036U true CN202651036U (en) | 2013-01-02 |
Family
ID=47420101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220343758 Expired - Fee Related CN202651036U (en) | 2012-07-16 | 2012-07-16 | Static contact member of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202651036U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538265A (en) * | 2014-11-28 | 2015-04-22 | 浙江正泰电器股份有限公司 | Arc extinguishing chamber and residual current operated circuit breaker |
| CN106077893A (en) * | 2016-08-03 | 2016-11-09 | 安徽汇精模具研发科技有限公司 | A kind of high breaking striking integrated bracket |
| CN109449028A (en) * | 2018-09-21 | 2019-03-08 | 温州瑞睿电气有限公司 | A kind of static contact structure and its with the fixed-type technique of arc leading angle |
| RU188671U1 (en) * | 2019-01-15 | 2019-04-19 | Михаил Аркадьевич Шурдов | Fixed contact circuit breaker |
| CN113889384A (en) * | 2021-08-16 | 2022-01-04 | 浙江创奇电气有限公司 | Circuit breaker |
-
2012
- 2012-07-16 CN CN 201220343758 patent/CN202651036U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538265A (en) * | 2014-11-28 | 2015-04-22 | 浙江正泰电器股份有限公司 | Arc extinguishing chamber and residual current operated circuit breaker |
| CN106077893A (en) * | 2016-08-03 | 2016-11-09 | 安徽汇精模具研发科技有限公司 | A kind of high breaking striking integrated bracket |
| CN109449028A (en) * | 2018-09-21 | 2019-03-08 | 温州瑞睿电气有限公司 | A kind of static contact structure and its with the fixed-type technique of arc leading angle |
| RU188671U1 (en) * | 2019-01-15 | 2019-04-19 | Михаил Аркадьевич Шурдов | Fixed contact circuit breaker |
| CN113889384A (en) * | 2021-08-16 | 2022-01-04 | 浙江创奇电气有限公司 | Circuit breaker |
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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: 20130102 Termination date: 20180716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |