CN202259067U - Minitype breaker provided with safety device - Google Patents
Minitype breaker provided with safety device Download PDFInfo
- Publication number
- CN202259067U CN202259067U CN2011203402323U CN201120340232U CN202259067U CN 202259067 U CN202259067 U CN 202259067U CN 2011203402323 U CN2011203402323 U CN 2011203402323U CN 201120340232 U CN201120340232 U CN 201120340232U CN 202259067 U CN202259067 U CN 202259067U
- Authority
- CN
- China
- Prior art keywords
- baffle plate
- buffering area
- control device
- handle
- baffle
- 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 minitype breaker provided with a safety protection system. The minitype breaker comprises a seal shell, wherein the seal shell is composed of an upper shell and a lower shell, the seal shell is internally provided with an arcing chamber, a first buffer area, a second buffer area, and a hand shank electromagnetism zone; the hand shank electromagnetism zone is internally provided with an electromagnetic system, a hand shank, a driving shaft, and an actuating mechanism, the actuating mechanism is provided with a contact support which is fixedly connected with a lever and a moving contact, and a moving contact and a stationary contact of the electromagnetic system are arranged in the arcing chamber; the hand shank electromagnetism zone is seal space, the hand shank electromagnetism zone and the first buffer area, the second buffer area, and the arcing chamber are separated, and air gaps are formed between the first arcing chamber and the second buffer area respectively and the arcing chamber; and the outer side of the arcing chamber is provided with an air outlet. The minitype breaker provided by the utility model has the beneficial effects that the minitype breaker effectively stops personal impaction from hand shank spraying camber, the transition is convenient, and the cost is low.
Description
Technical field
The utility model relates to a kind of miniature circuit breaker with safety device.
Technical background
Existing miniature circuit breaker (hereinafter to be referred as circuit breaker); Because handle links to each other with the circuit breaker internal mechanism, and receive the space be restricted to the assurance normal running, between handle and the closure casing; Inevitably there is assemblage gap; Therefore be short-circuited at circuit when circuit breaker, and when realizing protection immediately, part electric arc will fly out from the gap between handle and the closure casing.Along with the raising of user's quality of life, power consumption also rises thereupon, and the short-circuit current peak value on the circuit is also progressively promoting, so the arc safety requirement of shelter of circuit breaker also progressively becomes compulsory type approval test requirement in the relevant criterion.
In the prior art field, each factory commercial city has increased safety prevention measure through the mode of oneself, prevents the handle end ejection of electric arc from circuit breaker.
A kind of technical scheme adopts the handle end with circuit breaker to extend, and increases the mode of outer shield, makes the flashover distance of the person away from circuit breaker, and passes through the guard shield zone of limiting circuit breaker handle end ejection electric arc as far as possible.
A kind of technical scheme increases the manual operation annex, and the handle end of circuit breaker is isolated with annex, stops the user and directly contacts with the handle of circuit breaker, and the user can accomplish the handover operation of circuit breaker as long as operate the knob of manual operation annex.
A kind of technical scheme, patent No. CN97125489 on the closure casing of circuit breaker, increases the arc plate washer from the inside of circuit breaker between handle and the electromagnetic system, weaken the energy of electric arc from the handle end ejection.
Preceding as previously mentioned two kinds of technical schemes all need extra increase device, spray from handle end even electric arc occurs, also can guarantee personal safety.But the cost of security protection is very high obviously.
The third technical scheme does not change the outward appearance of circuit breaker own; Comparatively speaking; Overcome the deficiency of above two kinds of scheme costs; Only between the closure casing upper handle of circuit breaker and electromagnetic system, increase the arc plate washer, weakened the energy of electric arc, realized equivalent security protection effect from the handle ejection.But this scheme does not limit the Arc Motion space owing to only carried out protection is installed at handle end, in the time of the circuit breaker disjunction, will inevitably have electric arc in the electromagnetic system zone, in case the short circuit energy is too high, still can be ejected into outside the handle.
Summary of the invention
There is the problem that cost is high, can not effectively play a protective role in the safety guard that the utility model will solve existing miniature circuit breaker, and provides that a kind of cost is low, the miniature circuit breaker of the band safety guard that effectively plays a protective role.
The technical scheme of the utility model:
A kind of miniature circuit breaker with safety guard; Comprise the closure casing of forming by upper and lower casing; It is characterized in that: be provided with arc control device, first buffering area, second buffering area, handle electromagnetic district in the said closure casing; In the said handle electromagnetic district electromagnetic system, handle, driving shaft, actuator are installed, lever are installed in the said actuator support that with the contact that is fixedly connected with moving contact the fixed contact of said moving contact and electromagnetic system is installed in the arc control device;
Said lower house is provided with first baffle plate and second baffle; The position of corresponding second baffle is provided with the 3rd baffle plate on the said upper shell, and said handle electromagnetic district is a confined space that is surrounded by first baffle plate, second baffle, the 3rd baffle plate, upper shell, lower house and electromagnetic system;
The right side of said actuator is provided with the 4th baffle plate, encloses frame between said the 4th baffle plate, contact support, lever, the lower house and forms first buffering area, is provided with air gap between said first buffering area and the arc control device; Enclose frame between the left side of said first baffle plate, upper shell, the lower house and form second buffering area, be provided with air gap between said second buffering area and the arc control device; Said arc control device enclose frame by the 4th baffle plate, electromagnetic system, upper shell, lower house, second baffle, the 3rd baffle plate and form; The outside of said arc control device has the gas outlet.
Further, said gas outlet is located at the side away from first and second buffering area.
Further, the sealing surface with the lever mated sealing on the said upper shell is provided with a convex plane, when disjunction, can form the region of no pressure between said convex plane and the lever.
Further, said lower house is provided with the extended surface that is connected with second baffle, and said extended surface and contact support, the 4th baffle plate, lever are formed a stifled body of wall that first buffering area and handle electromagnetic district are separated.
Further, said first baffle plate, lower house dock respectively with upper shell and are connected, and said second baffle is connected with the butt joint of the 3rd baffle plate.
The technical conceive of the utility model; Through cooperating between first baffle plate and the upper and lower casing electromagnetic system and arc control device are isolated; Through cooperating between second baffle and the 3rd baffle plate and the upper and lower casing moving contact and fixed contact are enclosed in arc control device; Handle electromagnetic district and arc control device separate fully like this, and electric arc only exists in the arc control device, make electric arc more to the motion of the gas outlet in the arc control device outside.Simultaneously because the sealing of circuit breaker electric arc moving region has further limited the short circuit energy again.Improved the security protection performance of handle spray arc.
And first buffering area, second buffering area communicate with arc control device, is used at the disjunction initial stage, and the high pressure that moment produces in the arc control device is released in buffering area.Be equipped with buffering area between handle electromagnetic district and the arc control device and isolate, and seal processing between handle electromagnetic district and the buffering area.Thus, at the circuit breaker disjunction initial stage, the product internal gas is absorbed by buffering area because of the high pressure that the disjunction instantaneous expansion produces, and slows down the motion of electric arc to the handle electromagnetic district to greatest extent.The guiding that in breaking course, receives the arc control device space because of electric arc is in the motion process of arc control device gas outlet; In arc control device, buffering area and then produce negative pressure; The handle electromagnetic district is a high pressure because of handle gap and atmosphere relatively; Stop the diffusion of electric arc, stopped the appearance of handle spray arc with this to handle end.
While handle electromagnetic district is arranged to big than the volume of cushion space, even if because of disjunction
JustPhase short circuit energy is too high; Two high pressure that out of buffers produces with absorption electric arc, and make electric arc be diffused in the handle electromagnetic district, the handle electromagnetic district equally also can play cushioning effect; Its effect more is superior to buffering area; Thereby remaining arc energy is absorbed, and electric arc is controlled in the handle electromagnetic district, thereby stop electric arc to spray from handle end.In whole breaking course, electric arc all is to be directed into the gas outlet, has therefore stopped the appearance of handle spray arc.
The beneficial effect of the utility model:
(1) through restriction arc motion space, pilot arc moves to arc control device, when improving current limliting, divides the electric arc buffering area, absorbs arc energy, more effective impact of stopping handle spray arc to the person;
(2) under the prerequisite that does not change the outward appearance of circuit breaker own, circuit breaker is reequiped, make that repacking is convenient, cost is low.
Description of drawings
Fig. 1 is the structural representation of each parts of lower house place of the utility model.
Fig. 2 is the structural representation of the upper shell of the utility model.
Fig. 3 is the structural representation of the lower house of the utility model.
Embodiment
With reference to accompanying drawing 1-3; A kind of miniature circuit breaker with safety guard; Comprise the closure casing of forming by upper shell 11B, lower house 11A; Be provided with arc control device 12, first buffering area 15, second buffering area 17, handle electromagnetic district 16 in the said closure casing; Electromagnetic system 1, handle 3, driving shaft 5, actuator 6 are installed in the said handle electromagnetic district 16, lever 8 are installed in the said actuator 6 support 4 with the contact that is fixedly connected with moving contact 10, said moving contact 10 is installed in the arc control device 12 with the fixed contact of electromagnetic system 1;
Said lower house 11A is provided with first baffle plate 2 and second baffle 7A; The position that said upper shell 11B goes up corresponding second baffle 7A is provided with the 3rd baffle plate 7B, and said handle electromagnetic district 16 is confined spaces that surrounded by first baffle plate 2, second baffle 7A, the 3rd baffle plate 7B, upper shell 11B, lower house 11A and electromagnetic system 1;
The right side of said actuator 6 is provided with the 4th baffle plate 9, and said the 4th baffle plate 9, contact support 4, enclose frame between the lever 8, lower house 11A forms first buffering area 15, is provided with air gap between said first buffering area 15 and the arc control device 12; Enclose frame between the left side of said first baffle plate 2, upper shell 11B, the lower house 11A and form second buffering area 17, be provided with air gap between said second buffering area 17 and the arc control device 12; Said arc control device 12 are enclosed frame and are formed by the 4th baffle plate 9, electromagnetic system 1, upper shell 11B, lower house 11A, second baffle 7A, the 3rd baffle plate 7B; The outside of said arc control device 12 has gas outlet 13.
Said gas outlet 13 is located at the side away from first buffering area 15, two buffering areas 17.
Said upper shell 11B goes up and the sealing surface 14 of lever 8 fitted seal is provided with a convex plane, when disjunction, can form the region of no pressure between said convex plane and the lever 8.
Said lower house 11A is provided with the extended surface 18 that is connected with second baffle 7A, and said extended surface 18 and contact support the 4, the 4th baffle plate 9, lever 8 to form a stifled body of wall that first buffering area 15 and handle electromagnetic district 16 are separated.
Said first baffle plate 2, lower house 11A dock respectively with upper shell 11B and are connected, and said second baffle 7A is connected with the 3rd baffle plate 7B butt joint.
The technical conceive of the utility model; Through cooperating between first baffle plate 2 and upper shell 11B, the lower house 11A electromagnetic system 1 and arc control device 12 are isolated; Through cooperating between second baffle 7A and the 3rd baffle plate 7B and upper shell 11B, the lower house 11A moving contact 10 and fixed contact are enclosed in arc control device 12; Handle electromagnetic district 16 separates with arc control device 12 fully like this, and electric arc only exists in the arc control device 12, makes electric arc more to 13 motions of the gas outlet in arc control device 12 outsides.Because the sealing of circuit breaker electric arc moving region has further limited the short circuit energy again, improved the security protection performance of handle spray arc simultaneously.
And first buffering, 15, second buffering area 17 communicates with arc control device 12, is used at the disjunction initial stage, and the high pressure of moments generations is released in buffering area in the arc control device 12.Be equipped with buffering area between handle electromagnetic district 16 and the arc control device 12 and isolate, and seal processing between handle electromagnetic district 16 and the buffering area.Thus, at the circuit breaker disjunction initial stage, the product internal gas is absorbed by buffering area because of the high pressure that the disjunction instantaneous expansion produces, and slows down electric arc to greatest extent to 16 motions of handle electromagnetic district.The guiding that in breaking course, receives arc control device 12 spaces because of electric arc is in 13 motion processes of arc control device 12 gas outlets; In arc control device 12, buffering area and then produce negative pressure; Handle electromagnetic district 16 is a high pressure because of handle gap and atmosphere relatively; Stop the diffusion of electric arc, stopped the appearance of handle spray arc with this to handle end.
While handle electromagnetic district 16 is arranged to big than the volume of cushion space, even if too high because of disjunction initial stage short circuit energy, two out of buffers are to absorb the high pressure that electric arc produces; And make electric arc be diffused in the handle electromagnetic district 16; Handle electromagnetic district 16 equally also can play cushioning effect, and its effect more is superior to buffering area, thereby remaining arc energy is absorbed; And electric arc is controlled in the handle electromagnetic district 16, thereby stop electric arc to spray from handle end.In whole breaking course, electric arc all is to be directed into the gas outlet, has therefore stopped the appearance of handle spray arc.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; The protection range of the utility model should not be regarded as and only limit to the concrete form that embodiment states, the protection range of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (5)
1. miniature circuit breaker with safety guard; Comprise the closure casing of forming by upper and lower casing; It is characterized in that: be provided with arc control device, first buffering area, second buffering area, handle electromagnetic district in the said closure casing; In the said handle electromagnetic district electromagnetic system, handle, driving shaft, actuator are installed, lever are installed in the said actuator support that with the contact that is fixedly connected with moving contact the fixed contact of said moving contact and electromagnetic system is installed in the arc control device;
Said lower house is provided with first baffle plate and second baffle; The position of corresponding second baffle is provided with the 3rd baffle plate on the said upper shell, and said handle electromagnetic district is a confined space that is surrounded by first baffle plate, second baffle, the 3rd baffle plate, upper shell, lower house and electromagnetic system;
The right side of said actuator is provided with the 4th baffle plate, encloses frame between said the 4th baffle plate, contact support, lever, the lower house and forms first buffering area, is provided with air gap between said first buffering area and the arc control device; Enclose frame between the left side of said first baffle plate, upper shell, the lower house and form second buffering area, be provided with air gap between said second buffering area and the arc control device; Said arc control device enclose frame by the 4th baffle plate, electromagnetic system, upper shell, lower house, second baffle, the 3rd baffle plate and form; The outside of said arc control device has the gas outlet.
2. a kind of miniature circuit breaker with safety guard according to claim 1 is characterized in that: said gas outlet is located at the side away from first and second buffering area.
3. a kind of miniature circuit breaker according to claim 1 and 2 with safety guard; It is characterized in that: the sealing surface with the lever mated sealing on the said upper shell is provided with a convex plane, when disjunction, can form the region of no pressure between said convex plane and the lever.
4. a kind of miniature circuit breaker according to claim 3 with safety guard; It is characterized in that: said lower house is provided with the extended surface that is connected with second baffle, and said extended surface and contact support, the 4th baffle plate, lever are formed a stifled body of wall that first buffering area and handle electromagnetic district are separated.
5. a kind of miniature circuit breaker with safety guard according to claim 4 is characterized in that: said first baffle plate, lower house dock respectively with upper shell and are connected, and said second baffle is connected with the butt joint of the 3rd baffle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203402323U CN202259067U (en) | 2011-09-13 | 2011-09-13 | Minitype breaker provided with safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203402323U CN202259067U (en) | 2011-09-13 | 2011-09-13 | Minitype breaker provided with safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202259067U true CN202259067U (en) | 2012-05-30 |
Family
ID=46120270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203402323U Expired - Lifetime CN202259067U (en) | 2011-09-13 | 2011-09-13 | Minitype breaker provided with safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202259067U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368460A (en) * | 2011-09-13 | 2012-03-07 | 上海诺雅克电气有限公司 | Miniature breaker with safety device |
| CN108630472A (en) * | 2018-06-21 | 2018-10-09 | 浙江城电电气有限公司 | Miniature circuit breaker |
-
2011
- 2011-09-13 CN CN2011203402323U patent/CN202259067U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368460A (en) * | 2011-09-13 | 2012-03-07 | 上海诺雅克电气有限公司 | Miniature breaker with safety device |
| CN108630472A (en) * | 2018-06-21 | 2018-10-09 | 浙江城电电气有限公司 | Miniature circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202259067U (en) | Minitype breaker provided with safety device | |
| CN104934270B (en) | Circuit breaker | |
| CN102368460A (en) | Miniature breaker with safety device | |
| CN104810222B (en) | The arc-chutes of a kind of fast arc extinction and apply the miniaturization chopper of these arc-chutes | |
| CN201532915U (en) | Arc extinguish chamber used for low-voltage circuit breaker | |
| CN110838420A (en) | Circuit breaker and arc extinguish chamber thereof | |
| CN103021756A (en) | Circuit breaker capable of preventing electric arc from being ejected reversely and provided with arc way | |
| CN202189745U (en) | Airflow control mechanism for equipment circuit breaker | |
| CN102427008B (en) | Arc-extinguishing device for plastic shell low-voltage circuit breaker | |
| CN102064055B (en) | Contact system of circuit breaker | |
| CN102184814A (en) | Arc extinguishing equipment of moulded case circuit breaker | |
| CN102915892A (en) | Airflow control mechanism for equipment circuit breaker | |
| CN101789322B (en) | Combined type arc extinguish chamber provided with radial arc extinguishing grid pieces | |
| CN108376626B (en) | Control cabinet and GIS equipment using same | |
| CN202178224U (en) | Arc extinction system of breaker for device | |
| CN204905193U (en) | Arc initiation device of circuit breaker | |
| CN207303017U (en) | A kind of AC and DC omnipotent breaker with stronger arc quenching effect | |
| CN207852600U (en) | A kind of flash barrier applied to breaker | |
| CN209607667U (en) | High magnetic force clapper type relay | |
| CN206451665U (en) | Closed type contactor with arc leading angle | |
| CN202473624U (en) | Switch device contact closing impact force inhibiting apparatus | |
| CN104108468B (en) | A kind of programme-control box | |
| CN201117481Y (en) | Dynamoelectric type air contactor utilizing compressed-air for arc extinguishing and amortization | |
| CN215771046U (en) | Circuit breaker large-capacity contact arc extinguishing system capable of eliminating tripping bounce | |
| CN209675210U (en) | A kind of anti-Lorentz force relay |
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: 20120530 |