CN206877931U - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN206877931U CN206877931U CN201720692869.6U CN201720692869U CN206877931U CN 206877931 U CN206877931 U CN 206877931U CN 201720692869 U CN201720692869 U CN 201720692869U CN 206877931 U CN206877931 U CN 206877931U
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- China
- Prior art keywords
- arc
- chutes
- junction block
- shell
- miniature circuit
- 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.)
- Withdrawn - After Issue
Links
- 210000003205 muscle Anatomy 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 description 23
- 230000003139 buffering effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
Abstract
A kind of miniature circuit breaker, including shell, and the first spacing block in shell, first junction block and arc-chutes, first side plate of the shell is provided with the wiring cavities aligned of the first junction block and for the line outlet of leading-out wire, first junction block is located between the first side plate of shell and the outlet side of arc-chutes, and, first spacing block includes the dividing plate being arranged between the outlet side of arc-chutes and the first junction block, the dividing plate is provided with the first row gas port tilted down, one end of the first row gas port is relative with the outlet side of arc-chutes, the other end is located at below the first junction block and points to the part that the first side plate is located at below line outlet.The utility model provides a kind of simple in construction, exhaust capacity and the high miniature circuit breaker of security performance.
Description
Technical field
It the utility model is related to low voltage electrical apparatus technology field, and in particular to a kind of miniature circuit breaker.
Background technology
Existing breaker realizes 1P+N structure design, it is ensured that product possesses short due to small volume in 18mm width
Road and overload protection function, the exhaust space of natural products are restricted, so as to which electric arc is affected into arc-chutes, disjunction energy
Power is restricted.Existing circuit breaker is raising ability, it usually needs exhaust position is rationally designed, to reach disjunction
Electric arc rapidly enters the purpose of arc-chutes.But when designing vent position, often ignore electric arc from exhaust outlet spout to people
Or potential safety hazard caused by surrounding devices.
Utility model content
The defects of the purpose of this utility model is to overcome prior art, there is provided a kind of simple in construction, exhaust capacity and peace
The high miniature circuit breaker of full performance.
To achieve the above object, the utility model employs following technical scheme：
A kind of miniature circuit breaker, including shell 10 and the first spacing block 2, the first junction block 1 in shell 10
With arc-chutes 3, the first side plate 101 of the shell 10, which is provided with, to align with the wiring cavity 12 of the first junction block 1 and for connecing
The line outlet 107 of outlet, first junction block 1 are located between the first side plate 101 of shell 10 and the outlet side of arc-chutes 3,
Also, first spacing block 2 includes being arranged on dividing plate 21 between the outlet side of arc-chutes 3 and the first junction block 1, it is described every
Plate 21 is provided with the first row gas port 211 tilted down, one end of the first row gas port 211 and the outlet side phase of arc-chutes 3
Right, the other end is located at the lower section of the first junction block 1 and points to the part that the first side plate 101 is located at the lower section of line outlet 107.
Preferably, the second side plate 102 of the shell 10 is connected with the first side plate 101 and is located at the first junction block 1 and goes out
The lower section of arc chamber 3；First spacing block 2 also includes the separation muscle 22 between dividing plate 21 and the outlet side of arc-chutes 3, institute
Docked with the arc extinguishing grid pieces 30 of arc-chutes 3 so as to be separated between separation muscle 22 and dividing plate 21 one end for stating separation muscle 22
Second cushion space 23 and the 3rd cushion space 24 between separation muscle 22 and the second side plate 102 of shell 10, separate muscle
22 other end contacts connection with the second side plate 102 so as to which the through hole on the second side plate 102 is separated into the second cushion space 23
The cushion space 24 of second exhaust port 231 and the 3rd the 3rd exhaust outlet 241.
Preferably, the quantity of first junction block 1 is two, and two the first junction blocks 1 are respectively used to connect L lines, N lines
Outlet, between two the first junction blocks 1, first spacing block 2 is provided with L pole-faces first spacing block 2
The first stopper slot 25 for spacing the first junction block 1 for connecing L lines；The dividing plate 21 is arranged on the L pole-faces of the first spacing block 2
As a side wall of the first stopper slot 25, first stopper slot 25 is formed and first positioned at the section below of the first junction block 1
The first cushion space 20 that exhaust outlet 211 is connected.
Preferably, the quantity of the first row gas port 211 be at least two, at least two first rows gas port 211 it
Between be parallel to each other, and be sequentially arranged at intervals setting from top to bottom.
Preferably, it is high to be used for one end relative with the outlet side of arc-chutes 3 for the first row gas port 211 positioned at the top
In the least significant end of the first junction block 1, its other end is then less than the least significant end of the first junction block 1.
Preferably, the angle of inclination of the first row gas port 211 is θ, width W, length L, 15 °≤θ≤75 °,
0.8mm≤W≤1.5mm, 2mm≤L≤3mm.
Preferably, be vertically installed with the bottom plate 105 of the shell 10 first baffle 103 above arc-chutes 3, with
And the second baffle 104 positioned at the lower section of arc-chutes 3, the top plate of the first baffle 103 and second baffle 104 with shell 10
106 contact connections, also, the flat part 212 on the top of the dividing plate 21 docks with one end of first baffle 103, and and first gear
Plate 103 concordantly equally also contacts connection with the top plate 106 of shell 10.
Preferably, the end of flat part 212 of the dividing plate 21 is provided with the clamping breach being used for the clamping of first baffle 103
213, the end of the first baffle 103 is provided with the clamping bump coordinated with clamping breach 213.
Preferably, the miniature circuit breaker also includes the short circuit protection system 4, contact system 8, behaviour being arranged in shell 10
Make mechanism 9, the junction block 5 of overload protective device 7 and second；Second junction block 5 for being used to tap into line divides with the first junction block 1
It is not arranged on both sides in shell 10, what the contact system 8 and overload protective device 7 were distributed in arc-chutes 3 one on the other enters arc
Between side and the second junction block 5, the short circuit protection system 4 is located at the top of arc-chutes 3, a part for the operating mechanism 9
Positioned at the top of short circuit protection system 4, another part is located at the side of short circuit protection system 4.
Preferably, the quantity of the second junction block 5 of the miniature circuit breaker is two, and two the second junction blocks 5 are used respectively
In connection L lines, the inlet wire of N lines, the second spacing block 6 for separating both is provided between described two second junction blocks 5, described the
Two compartment block 6 is provided with the 3rd stopper slot and N pole-faces for spacing the second junction block 5 for connecing L lines on L pole-faces
The 4th stopper slot for spacing the second junction block 5 for connecing N lines.
Miniature circuit breaker of the present utility model, by the position of exhaust outlet and the setting of inclination face outer casing inner wall, so that
Air-flow and electric arc are oriented to, it is simple in construction, effectively avoid electric arc and air-flow from being sprayed from line outlet, make electric arc in existing arc extinguishing
Room and striking road improve product exhaust capacity under conditions of being basically unchanged, and electric arc is more rapidly entered arc-chutes, improve production
Product breaking capacity, electric arc or high temperature gas flow is passed through the buffering of product casing inwall again, weaken or consume electric arc or high temperature
The impact energy of air-flow, improve the security performance of product.
Brief description of the drawings
Fig. 1 is the front view of the utility model housing of mini-type circuit breaker inner structure；
Fig. 2 is the three-dimensional exploded view of the utility model miniature circuit breaker；
Fig. 3 is the stereogram of the L pole-faces of the spacing block of the utility model first；
Fig. 4 is the front view of the L pole-faces of the spacing block of the utility model first；
Fig. 5 is the utility model Fig. 4 partial structurtes enlarged drawing；
Fig. 6 is the stereogram of the N pole-faces of the spacing block of the utility model first；
Fig. 7 is the front view of the N pole-faces of the spacing block of the utility model first.
Embodiment
The embodiment provided below in conjunction with accompanying drawing 1 to 7, further illustrate the specific reality of miniature circuit breaker of the present utility model
Apply mode.Miniature circuit breaker of the present utility model is not limited to the following description.
As shown in figure 1, miniature circuit breaker of the present utility model includes shell 10 and first point in shell 10
Spacer block 2, the first junction block 1, arc-chutes 3, short circuit protection system 4, contact system 8, operating mechanism 9, overload protective device 7 and
Two junction blocks 5；It is described to be used to tapping into the second junction block 5 of line and symmetrically and be separately positioned on the first junction block 1 two in shell 10
Side, the contact system 8 and overload protective device 7 be distributed in one on the other arc-chutes 3 enter arc side and the second junction block 5 it
Between, the short circuit protection system 4 is located at the top of arc-chutes 3 and is connected with the static contact of contact system 8, the operating mechanism 9
A part be located at the top of short circuit protection system 4, another part be located at the side of short circuit protection system 4 and with contact system 8
Moving contact connection.
Especially, as shown in figure 1, the first side plate 101 of the shell 10 is provided with the wiring cavity with the first junction block 1
12 align and for the line outlet 107 of leading-out wire, and first junction block 1 is located at the first side plate 101 and arc-chutes 3 of shell 10
Outlet side between, also, first spacing block 2 include be arranged between the outlet side of arc-chutes 3 and the first junction block 1
Dividing plate 21, the dividing plate 21 are provided with the first row gas port 211 tilted down, one end of the first row gas port 211 and arc extinguishing
The outlet side of room 3 is relative, and the other end, which is located at the lower section of the first junction block 1 and points to the first side plate 101, is located at the lower section of line outlet 107
Part.Miniature circuit breaker of the present utility model, by the position of exhaust outlet and the setting of inclination face outer casing inner wall, so as to gas
Stream and electric arc are oriented to, simple in construction, effectively avoid electric arc and air-flow from being sprayed from line outlet, make electric arc in existing arc-chutes and
Striking road improves product exhaust capacity under conditions of being basically unchanged, and electric arc is more rapidly entered arc-chutes, improves product point
Cutting capacity, electric arc or high temperature gas flow is passed through the buffering of product casing inwall again, weaken or consume electric arc or high temperature gas flow
Impact energy, improve the security performance of product.
As shown in fig. 3 to 7, the quantity of first junction block 1 is two, and two the first junction blocks 1 are respectively used to connect L
The outlet of line, N lines, first spacing block 2 between two the first junction blocks 1 with by described two first junction blocks 1 every
Open, first spacing block 2 be provided with L pole-faces on for spacing the first junction block 1 for connecing L lines the first stopper slot 25, with
And the second stopper slot 26 for spacing the first junction block 1 for connecing N lines on N pole-faces；The dividing plate 21 is arranged on the first separation
A side wall on the L pole-faces of block 2 as the first stopper slot 25, first stopper slot 25 are located at the lower section of the first junction block 1
Divide the first cushion space 20 for being formed and being connected with first row gas port 211.First spacing block 2 passes through rivet riveting with shell 10
Connect and achieve a fixed connection, first spacing block 2 is provided with the rivet hole 27 with rivets.First stopper slot is located at first
The side wall of cushion space plays a part of buffering or weakening electric arc and high temperature gas flow.
As shown in Fig. 1 and Fig. 3-4, the second side plate 102 of the shell 10 is connected with the first side plate 101 and connect positioned at first
The lower section of line seat 1 and arc-chutes 3；First spacing block 2 also includes on L pole-faces and going out positioned at dividing plate 21 and arc-chutes 3
Separation muscle 22 between gas side, described one end for separating muscle 22 is docked with the arc extinguishing grid pieces 30 of arc-chutes 3 to be located at so as to be separated into
Separate the second cushion space 23 between muscle 22 and dividing plate 21 and positioned at separating between muscle 22 and the second side plate 102 of shell 10
3rd cushion space 24, the other end for separating muscle 22 contacts with the second side plate 102 and connected so that by the through hole on the second side plate 102
It is separated into the 3rd exhaust outlet 241 of the cushion space 24 of second exhaust port 231 and the 3rd of the second cushion space 23.It is separated out two
Exhaust gas region, strengthen buffering and guiding effect to electric arc and high temperature gas flow, improve the arc extinguishing ability and exhaust heat radiation energy of product
Power.Specifically, the size of the second cushion space 23 is more than the 3rd cushion space 24.The electric arc come out from the outlet side of arc-chutes 3
Or high temperature gas flow most after the buffering of the second cushion space 23 from second exhaust port 231 discharge shell 10；It is another small
Shell 10 is discharged from the 3rd exhaust outlet 241 in part after the 3rd cushion space 24 buffering.Preferably, the separation muscle 22 is circle
Arc convex tendon.
As shown in Figure 3 and Figure 4, the quantity of the first row gas port 211 is at least two, at least two first exhaust
It is parallel to each other between mouth 211, and is sequentially arranged at intervals is arranged on dividing plate 21 from top to bottom.The first row at multiple intervals on dividing plate
The setting of gas port, both made the convection current of arc-chutes both sides so as to ensure that the striking road of arc-chutes is constant, also will not be single excessive as setting
Exhaust outlet and cause the air pressure that arc-chutes outlet side is greatly reduced, so as to ensure that electric arc rapidly enters arc-chutes.It is described to be located at
The first row gas port 211 of the top is used for the least significant end that one end relative with the outlet side of arc-chutes 3 is higher than the first junction block 1,
Then it is less than the least significant end of the first junction block 1 positioned at the other end of the first row gas port 211 of the top.The first row gas port of the top
Position and the design of angle, it is easy to the rational deployment of other first row gas ports, the optional scope in position wide.
As shown in figure 5, the angle of inclination of the first row gas port 211 is θ, width W, length L, 15 °≤θ≤75 °,
0.8mm≤W≤1.5mm, 2mm≤L≤3mm.Principal security first row gas port is unsuitable excessive, the air pressure of stable second buffering area,
Contribute to electric arc to enter arc-chutes, strengthen arc-rupturing capacity.Preferably, the cross sectional shape of the first row gas port 211 is non-rectangle
Parallelogram.It is simple in construction, it is easy to manufacture.
As depicted in figs. 1 and 2, the first gear being vertically installed with the bottom plate 105 of the shell 10 above arc-chutes 3
Plate 103 and the second baffle 104 positioned at the lower section of arc-chutes 3, the first baffle 103 and second baffle 104 with shell 10
The contact connection of top plate 106, also, the flat part 212 on the top of the dividing plate 21 docks with one end of first baffle 103, and with
First baffle 103 concordantly equally also contacts connection with the top plate 106 of shell 10.Two baffle plates and dividing plate coordinate the shell of breaker
Realize and close the region outside arc-chutes outlet side, stablize the air pressure in the region so that electric arc rapidly enters arc-chutes, improve
Arc quenching effect, while electric arc or high temperature gas flow are directed, it is only capable of discharging from first, second, and third exhaust outlet, effectively keeps away
Exempting from electric arc or high temperature gas flow influences other mechanisms or the normal operation of part in breaker, improves the reliability and safety of product
Property.Specifically, the first baffle 103 is located between arc-chutes 3 and the short circuit protection system 4 of the top of arc-chutes 3, and described second
Baffle plate 104 is located between arc-chutes 3 and the second side plate 102 of the lower section of arc-chutes 3.Also, the end of flat part 212 of the dividing plate 21
Portion is provided with the clamping breach 213 being used for the clamping of first baffle 103, and the end of the first baffle 103 is provided with and clamping breach
213 clamping bumps coordinated.Matched somebody with somebody by the clamping bump of the clamping breach and first baffle on shell of the first spacing block upper spacer
Close, when the first spacing block is installed can fast positioning be arranged in shell, improve efficiency of assembling and uniformity.
As depicted in figs. 1 and 2, the quantity of the second junction block 5 of the utility model miniature circuit breaker is two, two second
Junction block 5 is respectively used to connect L lines, the inlet wire of N lines, and separate both second is provided between described two second junction blocks 5
Spacing block 6, second spacing block 6 be provided with L pole-faces on for spacing the second junction block 5 for connecing L lines the 3rd stopper slot,
And the 4th stopper slot for spacing the second junction block 5 for connecing N lines on N pole-faces.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (10)
- A kind of 1. miniature circuit breaker, it is characterised in that：The first spacing block including shell (10) and in shell (10) (2), the first junction block (1) and arc-chutes (3), the first side plate (101) of the shell (10) are provided with and the first junction block (1) Wiring cavity (12) align and for the line outlet (107) of leading-out wire, first junction block (1) is located at the of shell (10) Between the outlet side of side plate (101) and arc-chutes (3), also, first spacing block (2) includes being arranged on arc-chutes (3) Outlet side and the first junction block (1) between dividing plate (21), the dividing plate (21) is provided with the first row gas port that tilts down (211), one end of the first row gas port (211) is relative with the outlet side of arc-chutes (3), and the other end is located at the first junction block (1) lower section and the first side plate of sensing (101) are located at the part below line outlet (107).
- 2. miniature circuit breaker according to claim 1, it is characterised in that：The second side plate (102) of the shell (10) with First side plate (101) connects and positioned at the lower section of the first junction block (1) and arc-chutes (3)；First spacing block (2) also includes Separation muscle (22) between the outlet side of dividing plate (21) and arc-chutes (3), described one end for separating muscle (22) and arc-chutes (3) arc extinguishing grid pieces (30) dock is located at the second cushion space (23) separated between muscle (22) and dividing plate (21) so as to be separated into And positioned at the 3rd cushion space (24) separated between muscle (22) and the second side plate (102) of shell (10), separate muscle (22) The other end contacts connection with the second side plate (102) so as to which the through hole on the second side plate (102) is separated into the second cushion space (23) second exhaust port (231) and the 3rd exhaust outlet (241) of the 3rd cushion space (24).
- 3. miniature circuit breaker according to claim 1, it is characterised in that：The quantity of first junction block (1) is two, Two the first junction blocks (1) are respectively used to connect the outlet of L line, N lines, and first spacing block (2) is located at two the first wiring Between seat (1), first spacing block (2) is provided with first for spacing the first junction block (1) for connecing L lines on L pole-faces Stopper slot (25)；The dividing plate (21) is arranged on the side on the L pole-faces of the first spacing block (2) as the first stopper slot (25) Wall, first stopper slot (25) form what is be connected with first row gas port (211) positioned at the first junction block (1) section below First cushion space (20).
- 4. according to any described miniature circuit breakers of claim 1-3, it is characterised in that：The number of the first row gas port (211) Measure as at least two, be parallel to each other between at least two first rows gas port (211), and be sequentially arranged at intervals set from top to bottom Put.
- 5. miniature circuit breaker according to claim 4, it is characterised in that：The first row gas port positioned at the top (211) it is used for the least significant end that one end relative with the outlet side of arc-chutes (3) is higher than the first junction block (1), its other end is then low Least significant end in the first junction block (1).
- 6. according to any described miniature circuit breakers of claim 1-3, it is characterised in that：First row gas port (211) incline Rake angle is θ, width W, length L, 15 °≤θ≤75 °, 0.8mm≤W≤1.5mm, 2mm≤L≤3mm.
- 7. according to any described miniature circuit breakers of claim 1-3, it is characterised in that：The bottom plate (105) of the shell (10) On be vertically installed with the first baffle (103) above arc-chutes (3) and the second baffle below arc-chutes (3) (104), the first baffle (103) and second baffle (104) contact connection, also, institute with the top plate (106) of shell (10) The flat part (212) for stating dividing plate (21) top docks with one end of first baffle (103), and concordant with first baffle (103) same Sample also contacts connection with the top plate (106) of shell (10).
- 8. miniature circuit breaker according to claim 7, it is characterised in that：Flat part (212) end of the dividing plate (21) It is provided with provided with the end for the clamping breach (213) with first baffle (103) clamping, the first baffle (103) and clamping The clamping bump that breach (213) coordinates.
- 9. according to any described miniature circuit breakers of claim 1-3, it is characterised in that：The miniature circuit breaker also includes installation Short circuit protection system (4), contact system (8) in shell (10), operating mechanism (9), overload protective device (7) and second connect Line seat (5)；Second junction block (5) for being used to tap into line is separately positioned on shell (10) interior both sides with the first junction block (1), What the contact system (8) and overload protective device (7) were distributed in arc-chutes (3) one on the other enters arc side and the second junction block (5) between, the short circuit protection system (4) is located at the top of arc-chutes (3), and a part for the operating mechanism (9) is positioned at short The top of road protection system (4), another part are located at the side of short circuit protection system (4).
- 10. according to any described miniature circuit breakers of claim 1-3, it is characterised in that：The second of the miniature circuit breaker connects The quantity of line seat (5) is two, and two the second junction blocks (5) are respectively used to connect L lines, the inlet wire of N lines, and described two second connect The second spacing block (6) for separating both is provided between line seat (5), second spacing block (6), which is provided with L pole-faces, to be used for It is used for spacing the second junction block for connecing N lines on the 3rd stopper slot and N pole-faces of spacing the second junction block (5) for connecing L lines (5) the 4th stopper slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692869.6U CN206877931U (en) | 2017-06-14 | 2017-06-14 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692869.6U CN206877931U (en) | 2017-06-14 | 2017-06-14 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206877931U true CN206877931U (en) | 2018-01-12 |
Family
ID=61333738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720692869.6U Withdrawn - After Issue CN206877931U (en) | 2017-06-14 | 2017-06-14 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206877931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087829A (en) * | 2017-06-14 | 2018-12-25 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
-
2017
- 2017-06-14 CN CN201720692869.6U patent/CN206877931U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087829A (en) * | 2017-06-14 | 2018-12-25 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN109087829B (en) * | 2017-06-14 | 2024-08-27 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180112 Effective date of abandoning: 20240827 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180112 Effective date of abandoning: 20240827 |