CN205666211U - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN205666211U CN205666211U CN201620543133.8U CN201620543133U CN205666211U CN 205666211 U CN205666211 U CN 205666211U CN 201620543133 U CN201620543133 U CN 201620543133U CN 205666211 U CN205666211 U CN 205666211U
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- CN
- China
- Prior art keywords
- arc
- chutes
- circuit breaker
- housing
- contact
- 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 - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a miniature circuit breaker, which comprises a housin, be equipped with the explosion chamber in the casing, be equipped with moving contact and static contact in the casing, the moving contact is including the contact site, flexion and the installation department that connect gradually, be equipped with on the contact site and be curved contact surface to the explosion chamber protrusion, the flexion is equipped with the non return face on a side of explosion chamber, the non return face is the sunken arc structure that is of explosion chamber dorsad, the installation department is the rectangle structure, be equipped with the solder block to one side metal forming on the installation department, solder block is waist shape structure.
Description
Technical field
This utility model relates to a kind of low-voltage electrical protection device, particularly to a kind of miniature circuit breaker.
Background technology
At present, the Chinese patent of Publication No. CN205081084U on market discloses good small-sized of a kind of arc extinction performance
Chopper, it includes by the involutory housing constituted of cap and shell block, and is located at the moving contact in described housing, static contact, magnetic
Yoke, arc-chutes and run-on tab；The electric arc that beneficially will result between described moving contact and described static contact it is provided with in described housing
Introduce the magnetic blow-out device of described arc-chutes, described magnetic blow-out device include being respectively arranged on described cap and described shell block by producing
The first flash barrier that gas material is made and the second flash barrier, and be respectively arranged between described first flash barrier and described cap
And the first magnetic conduction sheet between described second flash barrier and described shell block and the second magnetic conduction sheet；Described first flash barrier and described the
On two flash barriers correspondence position be provided be suitable to pilot arc from arc-chutes front center recess enter arc-chutes striking oblique
Slope, on described housing, the rear at described arc-chutes is provided with at least two air vent.
In such scheme, moving contact easily makes electric arc move up when disjunction, and can not pilot arc to arc-chutes
Interior extinguishing, causes the easy oxidation damage of internal part, and service life is shorter.
Utility model content
The purpose of this utility model is to provide a kind of miniature circuit breaker, and its advantage is to improve moving contact electric arc when disjunction
The ability being drained in arc-chutes.
Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of miniature circuit breaker,
Including housing, being provided with arc-chutes in described housing, be provided with moving contact and static contact in described housing, described moving contact includes successively
Contact site, bending section and the installation portion connected, described contact site is provided with and protrudes curved contact surface to arc-chutes, described curved
Pars convoluta is provided with non-return face, the described non-return face arc-chutes dorsad curved structure of depression, described peace towards the one side of arc-chutes
Dress portion is rectangular configuration, and described installation portion is provided with the welding block stamping to side, and described welding block is kidney-shaped structure.
By technique scheme, moving contact is electrically connected with static contact by contact surface, when disjunction, and the electric arc quilt of generation
Non-return face stops, prevents electric arc from spreading further up, and non-return face is to buffer after arc makes electric arc delay to turn back, to arc extinguishing again
Room is moved and is realized arc extinguishing, it is to avoid electric arc moves directed along on the inclined-plane of installation portion after being detained, and improves the safety of internal structure,
And the structure of installation portion is rectangular configuration, then the structural stability after installation is higher, the structure of welding block is kidney-shaped structure, weldering
Junction is long-pending relatively big, and wire is installed relatively stable.
This utility model is further arranged to: described bending section is provided with, away from the side of arc-chutes, the face of arching upward, described in arch upward
Parallel with non-return face in face.
By technique scheme, there is a compensation in structure in face of arching upward relative to non-return mask, the width of bending section with connect
Contact portion and the similar width of installation portion, the most integrally-built width is all closer to, it is to avoid the fatigue crack of partial structurtes.
This utility model is further arranged to: the curved angle corresponding to described contact surface is more than 90 degree.
By technique scheme, the contact site that the span of contact surface is the most corresponding is the biggest, and overall construction intensity is relatively big,
Warping resistance ability is higher.
This utility model is further arranged to: the curved angle corresponding to described non-return face is less than 90 degree.
By technique scheme, the span in non-return face controls within the specific limits, it is to avoid the electric arc holdup time is long, carries
The rate of turning back of high electric arc.
This utility model is further arranged to: described static contact bends in C character form structure to arc-chutes, and static contact touches with dynamic
The disjunction position of head is provided with stationary contact.
By technique scheme, stationary contact electroplate, improve electrical connection effect.
This utility model is further arranged to: described housing is provided with observation window, and described observation window is provided with and housing shape
Become the buckle foot being clasped.
By technique scheme, observation window is utilized more convenient must the divide-shut brake situation of enclosure interior to be carried out
Solve so that operator are easier to obtain the status information that chopper is current, and the buckle foot on observation window makes it have preferably
Dismounting effect, assembles without extra parts, loads housing extruding and coordinates.
This utility model is further arranged to: described housing is provided with the handle for divide-shut brake, and described handle is provided with
Stopper slot, described housing is provided with spacing hole, and when handle turns to separating brake, stopper slot is through with spacing hole.
By technique scheme, due to chopper under gate-dividing state safer, then the handle position when separating brake
Put and lock, the potential safety hazard that maloperation can be avoided to bring, utilize the rod-like members of hard through spacing hole and stopper slot
Allowing for handle and be in the state of temporarily locking, it is to avoid unexpected combined floodgate, simple in construction is easy to operate.
This utility model is further arranged to: described housing is provided with dividing plate near the side of arc-chutes, and dividing plate is provided with logical
QI KOU, the bottom of housing is provided with gas outlet.
By technique scheme, the effect of the blow vent on dividing plate is the compensation realizing internal gas, by extraneous temperature
Spend relatively low gas to import in arc-chutes, then through the higher gas of gas outlet discharge temperature, it is achieved that gas circulation, carry
The high heat-sinking capability of arc-chutes.
This utility model is further arranged to: described housing includes that female shell and sub-shell, described female shell are provided with some ladders
Shape slot, described sub-shell is provided with the stairstepping column coordinated with stairstepping slot, and stairstepping slot is through with stairstepping column.
By technique scheme, sub-shell is with female shell when coordinating, and stairstepping slot is formed with stairstepping column and pre-fixes,
Make sub-shell and female shell relatively stable after being preliminarily mated, it is to avoid mutual dislocation, stairstepping slot and stairstepping column simultaneously
Shi Guantong's, plug-in mounting screw can realize more stable connection therein.
In sum, this utility model has the advantages that the multiple faces utilizing moving contact achieve drawing of electric arc
Lead, promote electric arc to move to arc-chutes, improve arc quenching effect.
Accompanying drawing explanation
Fig. 1 is the perspective view of embodiment one；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is the structural representation of the contact surface highlighting moving contact of embodiment one；
Fig. 4 is the structural representation in the face of arching upward highlighting moving contact of embodiment one；
Fig. 5 is the structural representation of the welding block highlighting moving contact of embodiment one；
Fig. 6 is the structural representation of the sub-shell of embodiment two；
Fig. 7 is the perspective view of embodiment two.
Reference: 1, housing；11, sub-shell；12, female shell；13, spacing hole；14, gas outlet；15, stairstepping slot；16、
Stairstepping column；2, arc-chutes；3, moving contact；31, contact site；311, contact surface；32, bending section；321, non-return face；322, arch
The face of rising；33, installation portion；4, static contact；5, welding block；6, stationary contact；7, observation window；71, buckle foot；8, handle；81, spacing
Groove；9, dividing plate；91, blow vent.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
Embodiment one: a kind of miniature circuit breaker, including housing 1, is provided with arc-chutes 2, moving contact 3, static contact 4 in housing 1,
Wherein, moving contact 3 and static contact 4 when disjunction by generation electric arc and enter arc-chutes 2 and realize arc extinguishing.
Moving contact 3 includes contact site 31, bending section 32 and installation portion 33；Contact site 31 is provided with contact surface 311, this contact
Face 311 is arcuate structure, and therefore the electrical connection when disjunction of moving contact 3 and static contact 4 can disconnect rapidly, it is achieved electricity timely
Road protected effect；Bending section 32 includes the face in the face towards arc-chutes 2 and arc-chutes 2 dorsad, wherein towards the one side of arc-chutes 2
For non-return face 321, non-return face 321 caves inward, and the electric arc for being detained on moving contact 3 can play the effect of stop, it is to avoid
Electric arc moves up further along non-return face 321, affects the miscellaneous part in housing 1.The one side of arc-chutes 2 is for arching upward the most dorsad
Face 322, serve the compensation in structure relative to non-return face 321, it is to avoid moving contact 3 produces during hitting with static contact 4
Raw fatigue bending.
The structure of installation portion 33 is rectangle, therefore when assembling, it is possible to avoid waving, improves structural stability.Installation portion
Being additionally provided with welding block 5 on 33, the volume that wherein solder flux block is outwardly easily facilitates welding lead, and additionally welding block 5 is actually
Being by punch forming, working (machining) efficiency is processed, and adapts to batch production.
Angle corresponding to contact surface 311 is more than 90 degree, and the leap angle of whole contact surface 311 is relatively big, its surface
Stress can disperse, it is achieved preferably structure buffering, it is to avoid the structural wear of moving contact 3 during divide-shut brake.And non-return face 321
Angle less than 90 degree, realizing stopping on electric arc in the case of shifting, it is to avoid the degree of crook of bending section 32 is excessive.
Static contact 4 bends towards arc-chutes 2, is equivalent to the position that static contact 4 arches upward and contacts with moving contact 3, thus anti-dynamic touches
The striking capabilities of 3 is relatively strong, and the stationary contact 6 on static contact 4 can use silver contact, improves the effect of electrical connection.
Embodiment two: be with the difference of embodiment one, such as Fig. 7, for the ease of observing, is provided with sight on housing 1
Examine window 7, the opening and closing state within housing 1 can be known by observation window 7, add the convenience of acquisition of information, observation window 7
It is connected with housing 1 by buckle foot 71, by by press-fit, assembles without extra parts.
Housing 1 is provided with handle 8, moves handle 8 and can realize the divide-shut brake of chopper, and handle 8 is provided with stopper slot 81,
Stopper slot 81 is arcuate structure, and housing 1 is provided with spacing hole 13, and when handle 8 turns to open position, spacing hole 13 is with spacing
Groove 81 communicates, and now can insert the diameter rod-like members close to stopper slot 81 on housing 1, limit the rotation of handle 8 with this,
Avoid the divide-shut brake that handle 8 unintentional rotation causes, it is achieved that fool proof function.
The electric arc produced when moving contact 3 and static contact 4 disjunction realizes arc extinguishing in entering to arc-chutes 2, simultaneously at housing 1
On the one hand inside, especially produces temperature rise near the position of arc-chutes 2, causes within housing 1 that when gases are heated, they expand, the opposing party
Rising along with temperature is also produced deformation by face-piece body 1 self；Dividing plate 9, dividing plate 9 it is provided with near the side of arc-chutes 2 at housing 1
On have blow vent 91, the relatively low air of ambient temperature carries out gas compensation, for arc-chutes by blow vent 91 to housing 1 is internal
2 effects with arc blow-out, the bottom of housing 1 is provided with gas outlet 14, and gas outlet 14 realizes the discharge effect of gas, blow vent 91,
Gas outlet 14 defines a gas passage, it is achieved that the circulation of air-flow compensates, and improves in housing 1 especially near arc-chutes
The radiating effect of 2 positions.
In conjunction with Fig. 1 and Fig. 6, housing 1 includes sub-shell 11 and female shell 12, sub-shell 11 and female shell 12 by stairstepping slot 15 with
Stairstepping column 16 realizes coordinating, and reaches to pre-fix, then can realize complete fixing at internal plug-in mounting screw, and reach can simultaneously
The effect of dismounting.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (9)
1. a miniature circuit breaker, including housing (1), is provided with arc-chutes (2) in described housing (1), described housing is provided with in (1)
Moving contact (3) and static contact (4), is characterized in that: described moving contact (3) includes contact site (31), the bending section being sequentially connected with
(32) and installation portion (33), described contact site (31) is provided with and protrudes curved contact surface (311) to arc-chutes (2), described
Bending section (32) is provided with non-return face (321), described non-return face (321) arc-chutes dorsad (2) towards the one side of arc-chutes (2)
Cave in curved structure, and described installation portion (33) is rectangular configuration, and described installation portion (33) is provided with to side stamping
Welding block (5), described welding block (5) is kidney-shaped structure.
Miniature circuit breaker the most according to claim 1, is characterized in that: described bending section (32) is away from the one of arc-chutes (2)
Side is provided with the face of arching upward (322), described in face (322) of arching upward parallel with non-return face (321).
Miniature circuit breaker the most according to claim 1, is characterized in that: the curved angle corresponding to described contact surface (311)
More than 90 degree.
Miniature circuit breaker the most according to claim 1, is characterized in that: the curved angle corresponding to described non-return face (321)
Less than 90 degree.
Miniature circuit breaker the most according to claim 1, is characterized in that: described static contact (4) bends in C to arc-chutes (2)
Character form structure, static contact (4) is provided with stationary contact (6) with the disjunction position of moving contact (3).
Miniature circuit breaker the most according to claim 1, is characterized in that: described housing (1) is provided with observation window (7), described
Observation window (7) is provided with and forms, with housing (1), the buckle foot (71) being clasped.
Miniature circuit breaker the most according to claim 1, is characterized in that: described housing (1) is provided with the hands for divide-shut brake
Handle (8), described handle (8) is provided with stopper slot (81), and described housing (1) is provided with spacing hole (13), when handle (8) turns to
During separating brake, stopper slot (81) is through with spacing hole (13).
Miniature circuit breaker the most according to claim 1, is characterized in that: described housing (1) sets near the side of arc-chutes (2)
Having dividing plate (9), dividing plate (9) to be provided with blow vent (91), the bottom of housing (1) is provided with gas outlet (14).
Miniature circuit breaker the most according to claim 1, is characterized in that: described housing (1) includes female shell (12) and sub-shell
(11), described female shell (12) is provided with some stairstepping slots (15), and described sub-shell (11) is provided with and stairstepping slot (15)
The stairstepping column (16) coordinated, stairstepping slot (15) is through with stairstepping column (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543133.8U CN205666211U (en) | 2016-06-06 | 2016-06-06 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543133.8U CN205666211U (en) | 2016-06-06 | 2016-06-06 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666211U true CN205666211U (en) | 2016-10-26 |
Family
ID=57155562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620543133.8U Expired - Fee Related CN205666211U (en) | 2016-06-06 | 2016-06-06 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511296A (en) * | 2017-02-23 | 2018-09-07 | 嘉灵科技有限公司 | Breaker with arc shield |
-
2016
- 2016-06-06 CN CN201620543133.8U patent/CN205666211U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511296A (en) * | 2017-02-23 | 2018-09-07 | 嘉灵科技有限公司 | Breaker with arc shield |
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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: 20161026 Termination date: 20180606 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |