CN205177743U - Breaker - Google Patents
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- CN205177743U CN205177743U CN201521050120.9U CN201521050120U CN205177743U CN 205177743 U CN205177743 U CN 205177743U CN 201521050120 U CN201521050120 U CN 201521050120U CN 205177743 U CN205177743 U CN 205177743U
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- arc
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- extinguishing grid
- arc extinguishing
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Abstract
The utility model relates to an electrical apparatus component field especially relates to a breaker. This breaker includes the casing to and the operating device who sets up in casing inside, electrically conductive mechanism and arc control device, this breaker's operating device branch is disconnected fast, and arc control device's quenching time is short, thus assurance breaker's is safe in utilization.
Description
Technical field
The utility model relates to electrical equipment component field, particularly relates to a kind of circuit breaker.
Background technology
Circuit breaker refers to can be connected, carries and electric current under disjunction normal circuit condition, also under the non-normal condition of regulation, (as overload, short circuit etc.) can connect, carry the device for switching of certain hour and breaking current.In breaker closing, disjunction moment, when certain conditions are met (as voltage, electric current meet or exceed certain value time) electric arc will be produced between contact, if arc extinction can not will constitute a threat to our life and property safety by circuit breaker timely and effectively.Therefore disjunction (arc extinguishing) performance of circuit breaker is extremely important; But existing circuit breaker deposits weak point both ways: 1, easily there is movable feeler lever resilience and cause restrike of arc in operating mechanism exercise speed not enough, result of use undesirable soon; 2, the arc quenching effect of arc-control device is not good, punctures and restrike after blow-out overlong time, arc extinction, causes circuit breaker can not disengagement failure circuit timely and effectively.
Summary of the invention
In order to solve the problem, the purpose of this utility model is to provide a kind of circuit breaker, and the operating mechanism breaking speed of this circuit breaker is fast, and the quenching time of arc-control device is short, thus ensures the use safety of circuit breaker.
In order to realize above-mentioned object, the utility model have employed following technical scheme:
A kind of circuit breaker, comprises housing, and is arranged on the operating mechanism of enclosure interior, conductive mechanism and arc-control device; Described conductive mechanism comprises end of incoming cables conductive component, leading-out terminal conductive component and electromagnetic system; Described leading-out terminal conductive component is connected with electromagnetic system, and electromagnetic system end is provided with fixed contact, and end of incoming cables conductive component is connected with moving contact, and operating mechanism drives moving contact and fixed contact to be rotatably assorted; Described operating mechanism comprises the handle be hinged in housing, tripping frame and contact rack, is connected between described handle and tripping frame by handle and connecting rod, and tripping frame is connected with contact rack, and moving contact is fixed on contact rack; Distance on described contact rack and between the link of tripping frame to contact rack hinged place, is less than the distance between moving contact to contact rack hinged place;
The lower end of described arc-control device is led arc plate under passing through and is connected with end of incoming cables conductive component, the upper end of arc-control device by lead arc plate and be connected with electromagnetic system; Arc-control device comprises the connecting plate be made up of insulating material, and some arc extinguishing grid pieces arranged in parallel; The main body side of described arc extinguishing grid pieces is provided with arc chute, and the arc extinguishing grid pieces side of arc chute both sides is provided with grid projection, and the protruding both sides of grid are provided with grid slot; Be provided with some plate holes along its length in the middle part of described connecting plate, some arc extinguishing grid pieces are connected and fixed by connecting plate, and the grid projection of arc extinguishing grid pieces snaps in the plate hole of connecting plate, and connecting plate locator card is connected in the grid slot of arc extinguishing grid pieces.
As preferably, described housing is provided with extension spring, and for the axostylus axostyle of Locating extension spring; Extension spring two ends are connected on axostylus axostyle and operating mechanism.
As preferably, the little outer end opening of interior end opening of described arc chute is large, and arc chute comprises notch district, angled transition district, horizontal transition district and bottom land district from outside to inside successively; The bottom land district semicircular in shape of described arc chute, the semicircle openend in bottom land district communicates with the inner, horizontal transition district, and outer end, horizontal transition district communicates with the inner in angled transition district, and the outer end in angled transition district communicates with notch district, and notch district sidewall is circular arc.
As preferably, the quantity of described arc extinguishing grid pieces is 13, and the quantity of connecting plate is 4 pieces; The two sides of every sheet arc extinguishing grid pieces are all connected with two pieces of connecting plates, and the arc extinguishing grid pieces between the connecting plate of two pieces, the same side is provided with arc groove.
The utility model adopts technique scheme, this circuit breaker has the advantage of following two aspects: 1, operating mechanism comprises the handle be hinged in housing, tripping frame and contact rack, be connected by handle and connecting rod between described handle and tripping frame, tripping frame is connected with contact rack, and moving contact is fixed on contact rack; Namely handle, handle and connecting rod, constitute quadric chain between tripping frame and contact rack.And limit on contact rack and the link of tripping frame to the distance between contact rack hinged place, be less than the distance between moving contact to contact rack hinged place; Specifically refer to that the input arm of force of contact rack is less than the output arm of force of contact rack, make the disjunction amplitude of the output of contact rack comparatively large, the quick disjunction of moving contact, operating mechanism has higher breaking capacity.2, arc-control device comprises the connecting plate that insulating material is made, and some arc extinguishing grid pieces arranged in parallel, and some arc extinguishing grid pieces are connected and fixed by connecting plate, the grid projection of arc extinguishing grid pieces snaps in the plate hole of connecting plate, and connecting plate locator card is connected in the grid slot of arc extinguishing grid pieces; And arc extinguishing grid pieces is outside original arc chute structure, also on the arc extinguishing grid pieces side of arc chute both sides, be provided with grid slot, the grid slot of both sides not only can to promote the arc voltage between arc extinguishing grid pieces, reach the effect of fast arc extinction, the area of dissipation of arc extinguishing grid pieces can also be made larger, be more conducive to cooling and the extinguishing of electric arc, thus shorten the quenching time, alleviate the scaling loss to contact, extend the useful life of circuit breaker.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of arc-control device.
Fig. 3 is the structural representation of arc extinguishing grid pieces.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.
A kind of circuit breaker as shown in Fig. 1 ~ Fig. 3, comprises housing 1, and is arranged on the operating mechanism of housing 1 inside, conductive mechanism and arc-control device 4.Described conductive mechanism comprises end of incoming cables conductive component 21, leading-out terminal conductive component 22 and electromagnetic system 23; Described leading-out terminal conductive component 22 is connected with electromagnetic system 23, and electromagnetic system 23 end is provided with fixed contact 24, end of incoming cables conductive component 21 is connected with moving contact 25, and operating mechanism drives moving contact 25 and fixed contact 24 to be rotatably assorted.
Described housing 1 is provided with extension spring 26, and for the axostylus axostyle 27 of Locating extension spring 26; Extension spring 26 two ends are connected on axostylus axostyle 27 and operating mechanism; Operating mechanism comprises the handle 31 be hinged in housing 1, tripping frame 32 and contact rack 33, and be connected by handle and connecting rod 34 between described handle 31 and tripping frame 32, tripping frame 32 is connected with contact rack 33, and moving contact 25 is fixed on contact rack 33; Distance on described contact rack 33 and between the link of tripping frame 32 to contact rack 33 hinged place, is less than the distance between moving contact 25 to contact rack 33 hinged place.Under this operating mechanism, handle 31, handle and connecting rod 34, between tripping frame 32 and contact rack 33, constitute quadric chain; Limit the distance on contact rack 33 and between the link of tripping frame 32 to contact rack 33 hinged place, be less than the distance between moving contact 25 to contact rack 33 hinged place; Specifically refer to that the input arm of force of contact rack 33 is less than the output arm of force of contact rack 33, make the disjunction amplitude of the output of contact rack 33 comparatively large, moving contact 25 disjunction fast, operating mechanism has higher breaking capacity.
The lower end of described arc-control device 4 is led arc plate 51 under passing through and is connected with end of incoming cables conductive component 21, the upper end of arc-control device 4 by lead arc plate 52 and be connected with electromagnetic system 23.Arc-control device 4 comprises the connecting plate 41 be made up of insulating material, and some arc extinguishing grid pieces 42 arranged in parallel.The main body side of described arc extinguishing grid pieces 42 is provided with arc chute, and the little outer end opening of interior end opening of arc chute is large, and arc chute comprises notch district 42a, angled transition district 42b, horizontal transition district 42c and bottom land district 42d from outside to inside successively; The bottom land district 42d semicircular in shape of described arc chute, the semicircle openend of bottom land district 42d communicates with 42c the inner, horizontal transition district, 42c outer end, horizontal transition district communicates with the inner of angled transition district 42b, the outer end of angled transition district 42b communicates with notch district 42a, and 42a sidewall in notch district is circular arc.
Arc extinguishing grid pieces 42 side of shown arc chute both sides is provided with grid projection 43, and protruding 43 both sides of grid are provided with grid slot 44; Some plate holes 411 are provided with along its length in the middle part of described connecting plate 41, some arc extinguishing grid pieces 42 are connected and fixed by connecting plate 41, the grid projection 43 of arc extinguishing grid pieces 42 snaps in the plate hole of connecting plate 41, and connecting plate 41 locator card is connected in the grid slot 44 of arc extinguishing grid pieces 42.In actual production, the quantity of arc extinguishing grid pieces 42 is preferably 13, and the quantity of connecting plate 41 is preferably 4 pieces; The two sides of every sheet arc extinguishing grid pieces 42 are all connected with two pieces of connecting plates 41, and the arc extinguishing grid pieces 42 between the connecting plate 41 of two pieces, the same side is provided with arc groove 45.In the arc-control device 4 of said structure, arc extinguishing grid pieces 42 is outside original arc chute structure, also on arc extinguishing grid pieces 42 side of arc chute both sides, be provided with grid slot 44, the grid slot 44 of both sides not only to promote the arc voltage between arc extinguishing grid pieces 42, can reach the effect of fast arc extinction, and the area of dissipation of arc extinguishing grid pieces 42 can also be made larger, more be conducive to cooling and the extinguishing of electric arc, thus shorten the quenching time, alleviate the scaling loss to contact, extend the useful life of circuit breaker.
Claims (4)
1. a circuit breaker, comprises housing, and is arranged on the operating mechanism of enclosure interior, conductive mechanism and arc-control device; Described conductive mechanism comprises end of incoming cables conductive component, leading-out terminal conductive component and electromagnetic system; Described leading-out terminal conductive component is connected with electromagnetic system, and electromagnetic system end is provided with fixed contact, and end of incoming cables conductive component is connected with moving contact, and operating mechanism drives moving contact and fixed contact to be rotatably assorted; It is characterized in that: described operating mechanism comprises the handle be hinged in housing, tripping frame and contact rack, is connected between described handle and tripping frame by handle and connecting rod, and tripping frame is connected with contact rack, and moving contact is fixed on contact rack; Distance on described contact rack and between the link of tripping frame to contact rack hinged place, is less than the distance between moving contact to contact rack hinged place;
The lower end of described arc-control device is led arc plate under passing through and is connected with end of incoming cables conductive component, the upper end of arc-control device by lead arc plate and be connected with electromagnetic system; Arc-control device comprises the connecting plate be made up of insulating material, and some arc extinguishing grid pieces arranged in parallel; The main body side of described arc extinguishing grid pieces is provided with arc chute, and the arc extinguishing grid pieces side of arc chute both sides is provided with grid projection, and the protruding both sides of grid are provided with grid slot; Be provided with some plate holes along its length in the middle part of described connecting plate, some arc extinguishing grid pieces are connected and fixed by connecting plate, and the grid projection of arc extinguishing grid pieces snaps in the plate hole of connecting plate, and connecting plate locator card is connected in the grid slot of arc extinguishing grid pieces.
2. a kind of circuit breaker according to claim 1, is characterized in that: described housing is provided with extension spring, and for the axostylus axostyle of Locating extension spring; Extension spring two ends are connected on axostylus axostyle and operating mechanism.
3. a kind of circuit breaker according to claim 1, is characterized in that: the little outer end opening of interior end opening of described arc chute is large, and arc chute comprises notch district, angled transition district, horizontal transition district and bottom land district from outside to inside successively; The bottom land district semicircular in shape of described arc chute, the semicircle openend in bottom land district communicates with the inner, horizontal transition district, and outer end, horizontal transition district communicates with the inner in angled transition district, and the outer end in angled transition district communicates with notch district, and notch district sidewall is circular arc.
4. a kind of circuit breaker according to claim 3, is characterized in that: the quantity of described arc extinguishing grid pieces is 13, and the quantity of connecting plate is 4 pieces; The two sides of every sheet arc extinguishing grid pieces are all connected with two pieces of connecting plates, and the arc extinguishing grid pieces between the connecting plate of two pieces, the same side is provided with arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050120.9U CN205177743U (en) | 2015-12-16 | 2015-12-16 | Breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050120.9U CN205177743U (en) | 2015-12-16 | 2015-12-16 | Breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205177743U true CN205177743U (en) | 2016-04-20 |
Family
ID=55741699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521050120.9U Active CN205177743U (en) | 2015-12-16 | 2015-12-16 | Breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205177743U (en) |
-
2015
- 2015-12-16 CN CN201521050120.9U patent/CN205177743U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |