CN205789831U - A kind of miniature circuit breaker - Google Patents
A kind of miniature circuit breaker Download PDFInfo
- Publication number
- CN205789831U CN205789831U CN201620632058.2U CN201620632058U CN205789831U CN 205789831 U CN205789831 U CN 205789831U CN 201620632058 U CN201620632058 U CN 201620632058U CN 205789831 U CN205789831 U CN 205789831U
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- CN
- China
- Prior art keywords
- arc
- sealing member
- chutes
- tripping
- bearing bracket
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- 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- Withdrawn - After Issue
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Abstract
A kind of miniature circuit breaker, it includes housing (1), operating mechanism (2), contact system (3), arc-chutes (4), hot tripping system (5), sealing system (6) and electromagnetic tripping system (7), described contact system (3) includes moving contact (301) and static contact (302), this utility model cancels Pao Hudao district, thus it is greatly improved the arc voltage rate of climb, strengthen short circuit breaking capacity, whole mechanism opens away from greatly, arc blow-out magnetic field is strong, simple in construction, easy to assembly.
Description
Technical field
This utility model belongs to Low Voltage Electrical Apparatus, the most just relates to a kind of miniature circuit breaker, improves chopper
The reliability and stability of disjunction.
Background technology
Low-voltage circuit breaker is divided into miniature circuit breaker, breaker of plastic casing and air-break by its range, be one both
Manual deciliter circuit of energy, the electrical equipment can automatically protected the fault such as circuit overloads, short circuit again, it is functionally equivalent to melt
Disconnected device and the combination of relay, and typically need not change parts after disjunction fault current, it is applied widely.
The traditional structure of miniature circuit breaker is generally divided into four regions: magnetic release district, operating mechanism district, arc-chutes district and
Pao Hudao district, dynamic/static contact is positioned at operating mechanism district and is fixed on operating mechanism, between dynamic/static contact and arc-chutes district, for
Pao Hudao district.When short trouble occurs, dynamic/static contact is opened under electrodynamic repulsion force and operating mechanism effect, produces electric arc, electricity
Arc, under arc blow-out power effect, first passes through Pao Hu road, and subsequently into the grid of arc-chutes, arc voltage is significantly raised and finally puts out
Go out.
The short circuit breaking capacity of miniature circuit breaker, directly related with arc voltage, arc voltage rises the fastest, sustained peak
The highest, short circuit breaking capacity is the highest.In this traditional structure, due to the existence in Pao Hudao district, electric arc must be by running arc
Road could enter arc-chutes, thus limits the rate of climb of arc voltage, reduces short circuit breaking capacity.
Utility model content
The purpose of this utility model is the Pao Hudao district for above-mentioned existing miniature circuit breaker, and electric arc moves before entering grid
Time is long, limits the arc voltage rate of climb so that the technological deficiency that short circuit breaking capacity reduces.Redesign a kind of small-sized
Chopper, cancels Pao Hudao district, thus is greatly improved the arc voltage rate of climb, strengthens short circuit breaking capacity.
Technical scheme
In order to realize above-mentioned technical purpose, this utility model devises a kind of miniature circuit breaker, and it includes housing, operates machine
Structure, contact system, arc-chutes, hot tripping system, sealing system and electromagnetic tripping system, described contact system includes moving contact,
It is characterized in that: described sealing system includes the first housing muscle, the second housing muscle and sealing member, described hot tripping system includes double
Sheet metal, electromagnetic tripping system is positioned at above arc-chutes, and contact system is positioned on the right side of arc-chutes, and operating mechanism is positioned at electromagnetic trip
On the right side of system and arc-chutes, run-on tab is positioned at below arc-chutes, and arc-chutes abdominal part is stretched in one end, and the other end is with bimetal leaf even
Connecing, moving contact one end extends to inside arc-chutes through sealing member, and the other end is connected with the lower link of operating mechanism, sealing member and
First housing muscle and the second housing muscle engage and form annular seal space.
Described sealing system includes the first housing muscle, and the second housing muscle and sealing member, moving contact is contained in sealing member, described
First housing muscle, the second housing muscle and sealing member, inner walls, static contact and sealing member form a confined space by arc-chutes
It is enclosed in wherein.
Described first housing muscle one end connects with static contact, and the other end is connected on housing left side wall.
Described sealing member includes sealing member and lower seal, and it is close that moving contact is contained in that sealing member and lower seal formed
In envelope cavity, the head of moving contact passes sealing cavity and puts in arc-chutes, and afterbody stretches out sealing member, and described lower seal is stretched out
Jut, described sealing member both sides connect with static contact.
Described operating mechanism includes that double leval jib and lower double leval jib, described upper double leval jib and lower double leval jib are connected in series；
Described upper double leval jib includes handle, and handle is connected with tripping by handle and connecting rod, and tripping is hinged to be contained on upper spider,
Snap close is hinged on upper spider, can limit tripping stroke in snap close rotation process；
Described lower double leval jib includes lower bearing bracket, and lower bearing bracket is connected with moving contact by lower link, and moving contact is contained in sealing member
In, extension spring one end is contained on lower bearing bracket, and the other end is contained on moving contact；
Described upper spider and lower bearing bracket are fitted together by torsion spring, and snap close can be promoted in lower bearing bracket motor process to tripping
Unlock.
Described lower bearing bracket is provided with projection, and torsion spring set is contained on projection, and one end of torsion spring is installed on the groove on lower bearing bracket
In, the other end is contained in the mounting groove of upper spider, and described upper spider and lower bearing bracket are fitted together side by side by torsion spring.
Stretching out hook on described lower bearing bracket, extension spring one end hangs on hook, and lower bearing bracket is additionally provided with arcuate projections, described
Arcuate projections can promote snap close to release the locking to tripping in lower bearing bracket motor process.
Described upper spider is provided with stroke limit groove, and tripping one end is hinged to be contained on upper spider, and the other end connects handle even
Bar, handle and connecting rod one end is contained in tripping deep Shen and enters stroke limit groove.
Beneficial effect
A kind of miniature circuit breaker that this utility model provides, cancels Pao Hudao district, thus is greatly improved arc voltage and rises
Speed, strengthens short circuit breaking capacity, and whole mechanism opens away from greatly, and arc blow-out magnetic field is strong, and simple in construction is easy to assembly.
Accompanying drawing explanation
Accompanying drawing 1 is the interior layout structure chart of this utility model embodiment.
Accompanying drawing 2 is the first housing muscle and the structural representation of the second housing muscle in this utility model embodiment.
Accompanying drawing 3 is the structural representation that in this utility model embodiment, moving contact is installed.
Accompanying drawing 4 is the structural representation of moving contact in this utility model embodiment.
Accompanying drawing 5 is the structural representation of sealing member in this utility model embodiment.
Accompanying drawing 6 is the structural representation of upper sealing member in this utility model embodiment.
Accompanying drawing 7 is the structural representation of lower seal in this utility model embodiment.
Accompanying drawing 8 is operating mechanism mounting structure schematic diagram in this utility model embodiment.
Accompanying drawing 9 is upper four-bar linkage structure schematic diagram in this utility model embodiment.
Accompanying drawing 10 is lower four-bar linkage structure schematic diagram in this utility model embodiment.
Accompanying drawing 11 is upper spider and lower bearing bracket mounting structure schematic diagram in this utility model embodiment.
Accompanying drawing 12 is upper spider main apparent direction structural representation in this utility model embodiment.
Accompanying drawing 13 is upper spider backsight direction structure schematic diagram in this utility model embodiment.
Accompanying drawing 14 is lower bearing bracket main apparent direction structural representation in this utility model embodiment.
Accompanying drawing 15 is lower bearing bracket backsight direction structure schematic diagram in this utility model embodiment.
Accompanying drawing 16 is torsion spring structural representation in this utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, this utility model is described further.
Embodiment
As shown in Figure 1, a kind of miniature circuit breaker, it includes housing 1, operating mechanism 2, contact system 3, arc-chutes 4, heat
Tripping system 5, sealing system 6 and electromagnetic tripping system 7, described contact system 3 includes moving contact 301, it is characterised in that: described
Sealing system 6 includes the first housing muscle 601, the second housing muscle 602 and sealing member 603, and described hot tripping system 5 includes bimetallic
Sheet 501, electromagnetic tripping system 7 is positioned at above arc-chutes 4, and contact system 3 is positioned on the right side of arc-chutes 4, and operating mechanism 2 is positioned at electromagnetism
On the right side of tripping system 7 and arc-chutes 4, run-on tab 8 is positioned at below arc-chutes 4, and arc-chutes 4 abdominal part is stretched in one end, and the other end is with double
Sheet metal 501 connects, and it is internal that moving contact 301 one end extends to arc-chutes 4 through sealing member 603, the other end and operating mechanism 2
Lower link 2202 connects, and sealing member 603 engages formation annular seal space with the first housing muscle 601 and the second housing muscle 602.
Described sealing system 6 includes the first housing muscle 601, the second housing muscle 602 and sealing member 603, and moving contact 301 is contained in
In sealing member 603, described first housing muscle 601, the second housing muscle 602 and sealing member 603, housing 1 inwall 102, static contact 302
Form a confined space with sealing member 603 to be enclosed in wherein by arc-chutes 4.
As shown in Figure 2, described first housing muscle 601 one end connects with static contact 302, and it is left that the other end is connected to housing 1
On sidewall.
As shown in accompanying drawing 3～7, sealing member 603 includes sealing member 6301 and lower seal 6302, and moving contact 301 is contained in
In the sealing cavity that upper sealing member 6301 and lower seal 6302 are formed, the head 3201 of moving contact 301 passes sealing cavity and stretches
Entering in arc-chutes 4, afterbody 3202 stretches out sealing member 603, and described lower seal 6302 stretches out jut 6302a, described sealing member
603 both sides connect with static contact 302.
As shown in Figure 8, operating mechanism 2 includes double leval jib 21 and lower double leval jib 22, described upper double leval jib 21 and lower four
Connecting rod 22 is connected in series；
As shown in Figure 9, upper double leval jib 21 includes handle 2101, and handle 2101 is by handle and connecting rod 2102 and tripping 2103
Connecting, tripping 2103 is hinged to be contained on upper spider 2104, and snap close 2105 is hinged on upper spider 2104, snap close 2105 rotation process
In can limit tripping 2103 stroke；
As shown in Figure 10, lower double leval jib 22 includes lower bearing bracket 2201, and lower bearing bracket 2201 is touched with dynamic by lower link 2202
301 connect, and moving contact 301 is contained in sealing member 603, and extension spring 2205 one end is contained on lower bearing bracket 2201, and the other end is contained in close
On sealing 603；Specifically, lower seal 204b stretches out jut 204b01, and one end of extension spring 205 is contained in jut 204b01's
In the 204b0101 of extension spring hole.
As shown in accompanying drawing 11 and 16, described upper spider 2104 and lower bearing bracket 2201 are fitted together by torsion spring 23, lower bearing bracket
2201 motor processs can promote snap close 2105 tripping 2103 is unlocked.
As shown in figures 14 and 15, lower bearing bracket 2201 is provided with projection 2201a, and torsion spring 23 is sleeved on projection 2201a, turns round
One end of spring 23 is installed in the groove 2201b on lower bearing bracket 2201, and the other end is contained in the mounting groove 2104a of upper spider 2104
In, described upper spider 2104 and lower bearing bracket 2201 are fitted together side by side by torsion spring 23.
Stretching out hook 2201c on lower bearing bracket 2201, extension spring 2205 one end hangs on hook 2201c, on lower bearing bracket 2201 also
It is provided with arcuate projections 2201d, described arcuate projections 2201d and can promote snap close 2105 in lower bearing bracket 2201 motor process
Release the locking to tripping 2103.
As shown in accompanying drawing 12 and 13, upper spider 2104 is provided with stroke limit groove 2104b, and tripping 2103 one end is hinged to be contained in
On upper spider 2104, the other end connects handle and connecting rod 2102, and handle and connecting rod 2102 one end is contained in tripping 2103 deep Shen and enters stroke
Stopper slot 2104b.
The present embodiment optimizes loop structure arrangement, increases dynamic and static contact large opening；Moving contact initial open position is at grid
Inside sheet, such striking magnetic field is strong, and electric arc arrives grid abdominal part through the shortest time, and the middle arc time is greatly shortened；Dynamic,
Static contact panel and arc-chutes region add sealing device, and the air pressure produced in this region disjunction promotes electric arc to arc-chutes abdominal part
Move in direction.Operating mechanism has rapid-releasing function, has stopped to move touch panel during disjunction and has fallen the phenomenon of arc discharge repeatedly caused after rise.Whole
Individual circuit breaker short circuit breaking capacity strengthens.
Structure depicted in the present embodiment institute accompanying drawings, ratio, size etc., the most only in order to coordinate disclosed in description in
Hold, understand for those skilled in the art and read, being not limited to the enforceable qualifications of this utility model, therefore not
Have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, do not affecting this practicality newly
Under effect that type can be generated by and the purpose that can reach, all should still fall and obtain can contain at the technology contents disclosed in this utility model
In the range of lid.Meanwhile, in this specification cited as " on ", D score, "left", "right", " middle ", " clockwise ", " inverse time
Pin " etc. term, be merely convenient to narration understand, and be not used to limit the enforceable scope of this utility model, it closes relatively
System is altered or modified, and is changing under technology contents without essence, when being also considered as the enforceable category of this utility model.
Claims (9)
1. a miniature circuit breaker, it includes that housing (1), operating mechanism (2), contact system (3), arc-chutes (4), heat are threaded off and be
System (5), sealing system (6) and electromagnetic tripping system (7), described contact system (3) includes moving contact (301), it is characterised in that:
Described moving contact (301) is positioned at arc-chutes (4) right side.
2. a kind of miniature circuit breaker as claimed in claim 1, it is characterised in that: described sealing system (6) includes the first housing
Muscle (601), the second housing muscle (602) and sealing member (603), described hot tripping system (5) includes bimetal leaf (501), electromagnetism
Tripping system (7) is positioned at arc-chutes (4) top, and described contact system (3) is positioned at arc-chutes (4) right side, and operating mechanism (2) is positioned at
Electromagnetic tripping system (7) and arc-chutes (4) right side, run-on tab (8) is positioned at arc-chutes (4) lower section, and arc-chutes (4) abdomen is stretched in one end
Portion, the other end is connected with bimetal leaf (501), in moving contact (301) one end extends to arc-chutes (4) through sealing member (603)
Portion, the other end is connected with the lower link (2202) of operating mechanism (2), sealing member (603) and the first housing muscle (601) and the second shell
Body muscle (602) engages and forms annular seal space.
3. a kind of miniature circuit breaker as claimed in claim 2, it is characterised in that: described sealing system (6) includes the first housing
Muscle (601), the second housing muscle (602) and sealing member (603), moving contact (301) is contained in sealing member (603), described first shell
Body muscle (601), the second housing muscle (602) and sealing member (603), housing (1) inwall (102), static contact (302) and sealing member
(603) form a confined space to be enclosed in wherein by arc-chutes (4).
4. a kind of miniature circuit breaker as claimed in claim 3, it is characterised in that: described first housing muscle (601) one end is with quiet
Contact (302) connects, and the other end is connected on housing (1) left side wall.
5. a kind of miniature circuit breaker as claimed in claim 3, it is characterised in that: described sealing member (603) includes sealing member
(6301) and lower seal (6302), moving contact (301) is contained in sealing member (6301) and that lower seal (6302) is formed is close
In envelope cavity, the head (3201) of moving contact (301) passes sealing cavity and puts in arc-chutes (4), and afterbody (3202) stretches out close
Sealing (603), described lower seal (6302) stretches out jut (6302a), described sealing member (603) both sides and static contact
(302) connect.
6. a kind of miniature circuit breaker as claimed in claim 1, it is characterised in that: described operating mechanism (2) includes double leval jib
(21) and lower double leval jib (22), described upper double leval jib (21) and lower double leval jib (22) are connected in series；
Described upper double leval jib (21) includes handle (2101), and handle (2101) is by handle and connecting rod (2102) with tripping (2103) even
Connecing, tripping (2103) is hinged to be contained on upper spider (2104), and snap close (2105) is hinged on upper spider (2104), snap close (2105)
Rotation process can limit tripping (2103) stroke；
Described lower double leval jib (22) includes lower bearing bracket (2201), and lower bearing bracket (2201) passes through lower link (2202) and moving contact
(301) connecting, moving contact (301) is contained in sealing member (603), and extension spring (2205) one end is contained on lower bearing bracket (2201), another
End is contained on moving contact (301)；
Described upper spider (2104) and lower bearing bracket (2201) are fitted together, in lower bearing bracket (2201) motor process by torsion spring (23)
Can promote snap close (2105) that tripping (2103) is unlocked.
7. a kind of miniature circuit breaker as claimed in claim 6, it is characterised in that: described lower bearing bracket (2201) is provided with projection
(2201a), torsion spring (23) is sleeved on projection (2201a), and one end of torsion spring (23) is installed on the groove on lower bearing bracket (2201)
(2201b), in, the other end is contained in the mounting groove (2104a) of upper spider (2104), described upper spider (2104) and lower bearing bracket
(2201) it is fitted together side by side by torsion spring (23).
8. a kind of miniature circuit breaker as claimed in claim 6, it is characterised in that: described lower bearing bracket stretches out hook on (2201)
(2201c), extension spring (2205) one end hangs on hook (2201c), and lower bearing bracket is additionally provided with arcuate projections on (2201)
(2201d), snap close (2105) can be promoted to release in lower bearing bracket (2201) motor process right for described arcuate projections (2201d)
The locking of tripping (2103).
9. a kind of miniature circuit breaker as claimed in claim 6, it is characterised in that: described upper spider (2104) is provided with stroke limit
Position groove (2104b), tripping (2103) one end is hinged to be contained on upper spider (2104), and the other end connects handle and connecting rod (2102), hands
Handle connecting rod (2102) one end is contained in the upper deep Shen of tripping (2103) and enters stroke limit groove (2104b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620632058.2U CN205789831U (en) | 2016-06-23 | 2016-06-23 | A kind of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620632058.2U CN205789831U (en) | 2016-06-23 | 2016-06-23 | A kind of miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205789831U true CN205789831U (en) | 2016-12-07 |
Family
ID=58131073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620632058.2U Withdrawn - After Issue CN205789831U (en) | 2016-06-23 | 2016-06-23 | A kind of miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205789831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546080A (en) * | 2016-06-23 | 2018-01-05 | 上海良信电器股份有限公司 | A kind of miniature circuit breaker |
-
2016
- 2016-06-23 CN CN201620632058.2U patent/CN205789831U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546080A (en) * | 2016-06-23 | 2018-01-05 | 上海良信电器股份有限公司 | A kind of miniature circuit breaker |
| CN107546080B (en) * | 2016-06-23 | 2019-12-31 | 上海良信电器股份有限公司 | Small-sized circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiang Honggang Inventor after: Jiang Wushan Inventor after: Peng Qiong Inventor after: Wang Longjiang Inventor before: Xiang Honggang Inventor before: Jiang Wushan Inventor before: Peng Qiong Inventor before: Wang Longjiang |
|
| CB03 | Change of inventor or designer information | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20191231 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20191231 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |