CN2596537Y - Low votage breaker with quick tripping function - Google Patents
Low votage breaker with quick tripping function Download PDFInfo
- Publication number
- CN2596537Y CN2596537Y CN 02267161 CN02267161U CN2596537Y CN 2596537 Y CN2596537 Y CN 2596537Y CN 02267161 CN02267161 CN 02267161 CN 02267161 U CN02267161 U CN 02267161U CN 2596537 Y CN2596537 Y CN 2596537Y
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- opening flange
- rotating shaft
- stressed member
- low
- 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 - Lifetime
Links
Images
Landscapes
- Breakers (AREA)
Abstract
The utility model discloses a low-voltage breaker with a quick tripping function, which is characterized in that at least one side face of a contact device is provided with an internally communicated opening flange; a corresponding stress member is arranged at the bottom of a rotating shaft on a base and is used for receiving overvoltage air streams liberating from the opening flange of the contact device; the overvoltage air streams are transferred to a touching member by the rotating shaft and are amplified; thus, a lock catch is quickly struck to generate tripping. As the force of the stress member is generated earlier than force generated by the actions of an electromagnetic part in a heat energy and electromagnetic system, and middle links are reduced, the low-voltage breaker can be broken early, breaking time is reduced, and the breaking capacity of the low-voltage breaker is raised.
Description
Technical field
The utility model relates to a utmost point or multipolar low-voltage circuit breaker, specifically a kind of low-voltage circuit breaker with quick tripping function.
Background technology
Existing low-voltage circuit breaker comprises a utmost point or the multipole contact device of setting, and realization is closed, the operating mechanism of separating brake; Heat energy, electromagnetic tripping apparatus that moves when overload and/or short circuit and the base that accommodates described first three items, base and cover.As everyone knows, when circuit breaker was subjected to big current overload, the contact head in the contact apparatus was subjected to electrodynamic effect; both repel, and reach metering function, and and then the action of the electromagnet portion in heat energy, the electromagnetic tripping apparatus is hit fast; make the circuit breaker disjunction, reach the effect of protection circuit and equipment.Multipole every impact that all might be subjected to short circuit current in extremely.So every utmost point can both reach the effect of current limliting and the quick disjunction of electromagnetism.But, be abutted against that the electromagnet portion action reaches disjunction in contact head phase repulsive interaction current limliting in the system of touching and heat energy, the electromagnetic tripping apparatus, operate time is long, and the short circuit breaking protective capability of circuit breaker is reached capacity, and improves very difficulty of disjunction class.
Summary of the invention
To be solved in the utility model is that existing low-voltage circuit breaker disjunction protective capability is easily saturated, the problem that the disjunction class is difficult to improve.Patent ZL9211503.2 provides a kind of low-voltage circuit breaker with quick tripping function, utilize air chamber to collect contact head disjunction short circuit current and form gases at high pressure, promote piston and drive bar to hit snap close, the quadric chain of circuit breaker operation mechanism is disintegrated, reach the purpose of the quick disjunction of circuit breaker, but its structure, complex process, the expense of taking a lot of work material.The utility model provides a kind of simpler and more direct otherwise effective technique scheme: described circuit breaker has base, the shell that base and cover is formed, this circuit breaker comprises a utmost point or multipole contact device, be provided with the arc extinguishing grid pieces chamber in the described contact apparatus, be installed under the electrodynamic repulsion force effect that the contact point between the described arc control device can be produced when the electric current that passes through surpasses certain value separately, formation is to the restriction of described electric current, one disconnects described contact and closed operating mechanism, one drives the overload of described operating mechanism and/or the heat energy of short trouble, electromagnetic tripping apparatus and rotating shaft, described contact apparatus has at least a side to be provided with the opening flange, described opening flange and the spatial communication that produces storing high pressure gas; And also being provided with rotating shaft in the corresponding position of base, described rotating shaft has with the stressed member of the relative configuration of described opening flange and with this stressed member transmits the touch part that tripgear that revolving force removes to touch operating mechanism makes switch trip; Described touch part is relative with snap close to be disposed.
When low-voltage circuit breaker is subjected to heavy current impact, contact head is scolded out, produce electric arc, produce power and impact then, wherein major part is consumed by arc extinguishing grid pieces, portion of energy and impact are overflowed along the opening flange of contact apparatus, stressed member is accepted the pressure gas stream of crossing from the opening flange effusion of contact apparatus, has so just produced the power of rotation around the shaft, and this revolving force is delivered to the touch part place and is exaggerated, and then hit snap close fast, produce tripping operation.Because the power that the generation of this power produces early than electromagnet portion action in aforesaid heat energy, the electromagnetic system, thereby electromagnetic force is hit tripgear by adjusting rod and tripping operation a link has been reduced by in the centre, so can make low-voltage circuit breaker disjunction early, reduce break-time, multipolar low-voltage circuit breaker breaking capacity is improved greatly, by theory analysis, multipolar low-voltage circuit breaker of the present utility model improves 50% than the breaking capacity of existing product.And this point is confirmed by experiment.
The lower end of described rotating shaft is arranged in the supporting of base, and the upper end is journaled on the part, and described part and base mechanical connection make rotating shaft keep rotation flexibly.
Go back the sensing part that suit one floats in the opening flange of described contact apparatus, leave an axial stroke gap between described sensing part and the described opening flange; Described stressed member is fin shape, and the axis of its stress surface and described opening flange is perpendicular.Sensing part is accepted outwards to eject behind the air-flow of the opening flange effusion of contact apparatus, hits wing of rotation, forms the power of rotation around the shaft equally, and this revolving force is delivered to the touch part place and is exaggerated, and then hits snap close fast, the generation tripping operation.The rotating shaft anglec of rotation is subjected to the restriction of installation site between wing and the contact apparatus, and sensing part is limited to behind the stroke of finishing the work in the opening flange, does not make the gas leak in the contact apparatus.It is conical that the outer surface of described opening flange is, and promptly guarantees the intensity of flange, can save material again.
As another kind of pattern of the present utility model, the outer surface of described opening flange is cylindrical; Described stressed member is cup-shaped, be sleeved on the described opening flange, and the distance of both cooperations is greater than the impulse stroke of described stressed member.Be understood that easily: after rotating shaft is subjected to powerful air-blowing rotation, can not make cup-shaped stress surface break away from the interior logical opening flange of contact apparatus, so just can not make gas between the adjacent contact device gang up the gas that causes the short circuit or an independent utmost point mutually and overflow destruction base, base and cover etc.
Described rotating shaft, touch part and stressed member can be made into integral structure or adopt the discrete part assembling synthetic, and former structure has higher rigidity, and realize easily making.This mechanism is arranged between the adjacent contact device or a side of an independent utmost point, and lower end and mid portion have supporting, keep its steadily fast rotational.Described rotating shaft is provided with back-moving spring, and it can be resetted after tripping is hit in air-blowing fast being subjected to, and transships disjunction so that better finish next time.Described spring can be torsion spring, extension spring, stage clip.In low-voltage circuit breaker; during the independent utmost point single rotating shaft can be set; under multipole situation,, also such fast trip mechanism can be set all between every two neighboring pole contact apparatus, therefore in order to improve the quick breaking capacity of every utmost point; when the number of poles of multipole circuit breaker is n; the number of fast trip mechanism is n-1, and each fast trip mechanism can both make the tripping dropout, the generation tripping operation; realize multipolar low-voltage circuit breaker quick disjunction, protective circuit and equipment.
In multipole circuit breaker, the stressed member of rotation beating type fast trip mechanism is preferably a pair of, respectively the opening flange on adjacent contact apparatus.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the utility model low-voltage circuit breaker embodiment.
Fig. 2 is the enlarged perspective of rotating shaft band double-vane shape sheet main body rotating shaft touch part.
Fig. 3 is the cross sectional representation of the touch device of sensing part and opening flange.
The internal structure schematic diagram of Fig. 4 multipole contact device.
Fig. 5 heat energy, electromagnetic tripping apparatus structural representation.
Fig. 6 is the perspective view of pedestal and lid.
Fig. 7 is the enlarged perspective of single wing of rotating shaft band, main body rotating shaft, touch part.
Fig. 8 is the structural representation of another embodiment of the utility model low-voltage circuit breaker.
Fig. 9 is the enlarged perspective with the rotating shaft of a pair of cup-shaped stressed member.
Figure 10 is the enlarged perspective with the rotating shaft of single cup-shaped stressed member.
Embodiment
With reference to Fig. 1-6, described low-voltage circuit breaker has base 4, the shell that pedestal 17 and lid 18 are formed, this circuit breaker comprises three utmost point contact apparatus 5 placed side by side, two arc extinguishing grid pieces chambers 14, two pairs of contact heads 12 that are installed in described arc extinguishing grid pieces chamber 14, separate under the effect of 13 electrodynamic repulsion forces that can when the electric current that passes through surpasses certain value, be produced, formation is to the restriction of described electric current, one disconnects described contact head and closed operating mechanism 1, one drives the overload of described operating mechanism 1 and/or the heat energy of short trouble, electromagnetic tripping apparatus 15 and a rotating shaft 8, the lower end of described rotating shaft 8 is arranged in the supporting 32 of base 4, the upper end is journaled on the part 33, described part 33 and base 4 mechanical connections.Described rotating shaft 8 produces turning moment by a pair of wing 30 power of accepting to come from the contact apparatus 5 that the bottom is provided with, and when this moment reaches certain value, drives the tripgear 23 of described operating mechanism 1.
The top of described rotating shaft 8 is provided with touch part 9, and rotating shaft 8, touch part 9 and wing 30 employing molded plastics are made integral structure.Described touch part 9 and snap close 7 relative configurations.Logical opening flange 6 in middle contact apparatus 5 two sides are equipped with, and the contact apparatus 5 of both sides is only established opening flange 6 in an inside side, described opening flange 6 is communicated with the space 34 that produces storing high pressure gas, and it is conical that the outer surface 27 of opening flange 6 is.Sensing part 29 is sleeved in the opening flange 6 for having the cylinder of taper or hemispherical nose, and is relative with wing 30, and wing 30 stress surface 20 is perpendicular with the axis of described opening flange 6.Sensing part 29 floats in opening flange 6 and can do the axial motion of certain distance, and after wing 30 of its bump rotation, rotating has for wing 30 necessarily spacingly, and sensing part 29 also is limited, and has only certain displacement.Sensing part 29 is accepted outwards to eject behind the air-flow of opening flange 6 effusions of contact apparatus 5, hits wing 30 of rotation, forms the power of 8 rotations around the shaft, and this revolving force is delivered to touch part 9 places and is exaggerated, and then hits snap close 7 fast, the generation tripping operation.Back-moving spring 3 resets main body rotating shaft 8, and sensing part 29 also is reset so that finish short circuit breaking next time better simultaneously.
Execution mode shown in Figure 7 is improved on above-mentioned execution mode basis, and difference is to be arranged in the rotating shaft 8 wing 30 for single, and like this, each contact apparatus 5 all is provided with opening flange 6 in the same side, and is corresponding with wing 30.Same this structure is more suitable for single-pole circuit breaker.
Shown in Fig. 8,9 is another execution mode of the utility model, different with Fig. 1 execution mode is: stressed member 10 set bottom the rotating shaft is cup-shaped, the outer surface 27 of the opening flange 6 on the contact apparatus 5 is cylindrical, this cup-shaped stressed member 10 directly is sleeved on the described opening flange 6, and the distance of both cooperations is greater than the impulse stroke of described stressed member 10.
When low-voltage circuit breaker is subjected to heavy current impact, contact head 12,13 is scolded out, produce electric arc, then produce power and impact, wherein major part is consumed by arc extinguishing grid pieces, portion of energy and impact are overflowed along the opening flange 6 of contact apparatus 5, because of the cup-shaped stressed member 10 in the left and right sides is accepted from the air-flow of opening flange 6 effusions of two neighboring pole contact apparatus 5, so just produced a power that makes rotating shaft around self axis body rotation, this revolving force is delivered to top touch part 9 places and is exaggerated, and then hit tripping fast, and make it to rotate by inhour around self axis body, produce tripping operation.Because the power that the generation of this power produces early than electromagnet portion action in heat energy, the electromagnetic system, thereby a link that electromagnetic force is hit tripgears 23 by adjusting rod 16, tripping 22 has been reduced by in the centre, so can make the quick disjunction of low-voltage circuit breaker, improve breaking capacity.
Execution mode shown in Figure 10 is improved on the basis of above-mentioned execution mode, and difference is the cup-shaped stressed member 10 of rotating shaft for single, and like this, each contact apparatus 5 all is provided with opening flange 6 in the same side, and is corresponding with cup-shaped stressed member 10.This structure is more suitable for single-pole circuit breaker.
Claims (7)
1, low-voltage circuit breaker with quick tripping function, described circuit breaker has base (4), the shell that pedestal (17) and lid (18) are formed, this circuit breaker comprises a utmost point or multipole contact device (5), be provided with arc extinguishing grid pieces chamber (14) in the described contact apparatus (5), be installed in the contact head (12 between the described arc control device (14), 13) separate under the electrodynamic repulsion force effect that can when the electric current that passes through surpasses certain value, be produced, formation is to the restriction of described electric current, one disconnects described contact and closed operating mechanism (1), one drives the overload of described operating mechanism (1) and/or the heat energy of short trouble, electromagnetic tripping apparatus (15) and rotating shaft (8) is characterized in that: described contact apparatus (5) has at least a side to be provided with opening flange (6), and described opening flange (6) is communicated with the space (34) that produces storing high pressure gas; And also being provided with rotating shaft (8) in the corresponding position of base (4), described rotating shaft (8) has with the stressed member (10,30) of the relative configuration of described opening flange (6) and with this stressed member (10,30) transmits the touch part (9) that tripgear (23) that revolving force goes to touch operating mechanism (1) makes switch trip; The relative configuration of described touch part (9) with snap close (7).
2, circuit breaker as claimed in claim 1 is characterized in that the lower end of described rotating shaft (8) is arranged in the supporting (32) of base (4), and the upper end is journaled on the part (33), described part (33) and base (4) mechanical connection.
3, circuit breaker as claimed in claim 2 is characterized in that going back the sensing part (29) that suit one floats in the opening flange (6) of described contact apparatus (5), leaves an axial stroke gap between described sensing part (29) and the described opening flange (6); Described stressed member (30) is fin shape, and its stress surface (20) is perpendicular with the axis of described opening flange (6).
4, circuit breaker as claimed in claim 3 is characterized in that the outer surface (27) of described opening flange (6) is conical.
5, circuit breaker as claimed in claim 2 is characterized in that, the outer surface (27) of described opening flange (6) is cylindrical; Described stressed member (10) is cup-shaped, be sleeved on the described opening flange (6), and the distance of both cooperations is greater than the impulse stroke of described stressed member (10).
6,, it is characterized in that described rotating shaft (8) is provided with back-moving spring (3) as any one described circuit breaker of claim 1～5.
7, as circuit breaker as described in the claim 6, it is characterized in that described rotating shaft (8), touch part (9) and stressed member (10,30) are designed to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267161 CN2596537Y (en) | 2002-09-12 | 2002-09-12 | Low votage breaker with quick tripping function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267161 CN2596537Y (en) | 2002-09-12 | 2002-09-12 | Low votage breaker with quick tripping function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2596537Y true CN2596537Y (en) | 2003-12-31 |
Family
ID=33732811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267161 Expired - Lifetime CN2596537Y (en) | 2002-09-12 | 2002-09-12 | Low votage breaker with quick tripping function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2596537Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442421C (en) * | 2004-10-07 | 2008-12-10 | Ls产电株式会社 | Pressure trip device for circuit breaker |
| CN101685730B (en) * | 2009-05-11 | 2012-02-01 | 江苏辉能电气有限公司 | Low-voltage circuit breaker with quick tripping function |
| CN102576614A (en) * | 2009-09-18 | 2012-07-11 | 施耐德电器工业公司 | Assembly of double-casing multipolar cutoff device, and circuit breaker including same |
| CN101685727B (en) * | 2009-05-11 | 2012-12-05 | 江苏辉能电气有限公司 | Quick releasing device for miniaturized circuit breaker |
-
2002
- 2002-09-12 CN CN 02267161 patent/CN2596537Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442421C (en) * | 2004-10-07 | 2008-12-10 | Ls产电株式会社 | Pressure trip device for circuit breaker |
| CN101685730B (en) * | 2009-05-11 | 2012-02-01 | 江苏辉能电气有限公司 | Low-voltage circuit breaker with quick tripping function |
| CN101685727B (en) * | 2009-05-11 | 2012-12-05 | 江苏辉能电气有限公司 | Quick releasing device for miniaturized circuit breaker |
| CN102576614A (en) * | 2009-09-18 | 2012-07-11 | 施耐德电器工业公司 | Assembly of double-casing multipolar cutoff device, and circuit breaker including same |
| CN102576614B (en) * | 2009-09-18 | 2016-08-03 | 施耐德电器工业公司 | The assembly of double-casing multipolar cutoff device and include the circuit-breaker of this device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1245731C (en) | Low-voltage circuit breaker with rapid lock-jumping function | |
| CN2596537Y (en) | Low votage breaker with quick tripping function | |
| CN105405707A (en) | Gas-insulated load switch and arc extinguishing device thereof | |
| CN208336117U (en) | A kind of breaker of plastic casing | |
| CN108766849A (en) | Breaker double arc extinguishing chambers static contact arc eliminating module | |
| CN2667649Y (en) | Low-voltage circuit breaker with fast tripping function | |
| RU2294575C2 (en) | Low voltage circuit interrupter with fast disabling function | |
| CN113936978B (en) | Plastic case circuit breaker | |
| CN207319990U (en) | A kind of high voltage load switch | |
| CN220796568U (en) | Arc extinguishing device, switch unit and isolating switch | |
| CN212874402U (en) | Plastic case circuit breaker | |
| CN103094015A (en) | Modularized double breakpoint plastic shell type circuit breaker | |
| CN202178224U (en) | Arc extinction system of breaker for device | |
| CN219591339U (en) | Moving contact fully-enclosed circuit breaker arc extinguishing structure | |
| CN216749679U (en) | Rotating switch moving contact component for physically isolating electric arc | |
| CN209766346U (en) | Arc extinguishing system of direct current breaker | |
| CN114360956A (en) | Rotating switch moving contact component for physically isolating electric arc | |
| CN213304049U (en) | Contact arc extinguishing device of circuit breaker | |
| CN220933998U (en) | Arc blocking assembly for low-voltage circuit breaker | |
| CN107393780A (en) | A kind of miniature circuit breaker of strong breaking capacity | |
| CN209183489U (en) | A kind of static contact structure and its arc quenching system applied on low-voltage intelligent circuit breaker | |
| CN116031116B (en) | Plastic case circuit breaker | |
| CN216528511U (en) | Arc extinguishing system of heavy current direct current traction load switch | |
| CN114360966B (en) | Contactor with enhanced magnetic field guiding arc extinguishing chamber | |
| CN118098899B (en) | Circuit breaker contact structure convenient to assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20060315 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |