CN206864417U - A kind of miniature circuit breaker moving contact thermal trip system architecture - Google Patents
A kind of miniature circuit breaker moving contact thermal trip system architecture Download PDFInfo
- Publication number
- CN206864417U CN206864417U CN201720766028.5U CN201720766028U CN206864417U CN 206864417 U CN206864417 U CN 206864417U CN 201720766028 U CN201720766028 U CN 201720766028U CN 206864417 U CN206864417 U CN 206864417U
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- CN
- China
- Prior art keywords
- moving contact
- bimetal leaf
- circuit breaker
- thermal element
- boss
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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.)
- Expired - Fee Related
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- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 4
- 229910000679 solder Inorganic materials 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Breakers (AREA)
- Thermally Actuated Switches (AREA)
Abstract
The utility model provides a kind of miniature circuit breaker moving contact thermal trip system architecture, and it includes the composition such as moving contact, bimetal leaf, thermal element, binding post.Free-hand driving handle, drivening rod drive mechanism, after dead point is crossed by mechanism, moving contact rotation contacts with static contact to be reliably connected.When occurring overload current in distribution line, the lock on pushing mechanism is deformed after bimetal leaf is heated, lock separates with tripping, and moving contact action flicks, and is allowed to separate with static contact.Two boss are designed with moving contact side, one boss I is connected by being flexible coupling with bimetal leaf, another boss II is connected by being flexible coupling with thermal element, the bottom of thermal element and bimetal leaf is provided with adjusting seat in addition, adjusting screw adjusts the position of bimetal leaf, compared to existing moving contact of breaker structure, the electrical apparatus release takes heater-type and directly-heated type to engage mode, electric current is flowed on moving contact from two independent being flexible coupling, in the case of same conductor section, add solder side, reduce conductor temp.-elevating, reduce the temperature rise of binding post, improve miniature circuit breaker reliability of operation.
Description
Technical field
It the utility model is related to low voltage switch equipment technical field, and in particular to high current in a kind of low-voltage miniature circuit breaker
Moving contact structure.
Background technology
Miniature circuit breaker product has a long delay and instantaneous two sections of defencive functions, long delay protection be flowed through by electric current it is double
Sheet metal heating deformation, pushing mechanism make small size breaker come caused by the case that protection circuit overloads from the normal time
Circuit is burnt out, but in the miniature circuit breaker of high current section, in addition to the purpose for meeting long delay protection, also needs to consider to move
Thermal element heating, bimetal leaf heating cause the higher unqualified problem for causing product of binding post temperature rise in contact system.
The content of the invention
In order to solve the above technical problems, the utility model provides a kind of miniature circuit breaker moving contact structure, structure is set
Meter is more reasonable, increases moving contact radiating surface, reduces temperature rise；Adjustment spring, convenient adjustment are added in thermal element lower end.
For achieving the above object, technical solution adopted in the utility model is：
A kind of miniature circuit breaker moving contact structure, it includes moving contact, bimetal leaf, thermal element, binding post, moves and touches
Head is connected with bimetal leaf, bimetal leaf is connected by thermal element with binding post, and moving contact is hinged with Shell of circuit breaker, and it is logical
The bat-handle switch for crossing connector and breaker connects, and bat-handle switch action, moving contact rotation contacts connection, bimetallic with static contact
Piece is also connected by connecting rod I with moving contact, and deformation pulling moving contact, makes moving contact be separated with static contact after bimetal leaf is heated,
Moving contact side is provided with two boss, and a boss I is connected by being flexible coupling with bimetal leaf, and another boss passes through soft company
Connect II to be connected with thermal element, take heater-type and directly-heated type to engage dropout mode.The bottom of thermal element and bimetal leaf is set
Adjusting seat is equipped with, adjusting seat includes adjusting screw and spring I, and the bottom of thermal element is arranged between adjusting screw and spring I,
Adjusting screw is threadedly coupled with Shell of circuit breaker, the position of rotation adjusting screw adjustment bimetal leaf.
Described moving contact is strip, and middle part is hinged with Shell of circuit breaker, and bottom is provided with touching towards static contact
Point；Described connector includes connecting seat, connecting rod II, torsion spring, the both ends of connecting rod II respectively with bat-handle switch is inner and connecting seat
Be hinged, moving contact is connected by torsion spring with connecting seat, and connecting seat is hinged with moving contact upper end, one end of connecting rod I and connecting seat
Be hinged, the other end is connected with bimetal leaf upper end.
Described thermal element is V-arrangement, and the bimetal leaf lower end of long plate shape is fixedly connected with the middle part angle end of thermal element, heat member
Two side ends of part are fixedly connected with binding post and Shell of circuit breaker respectively, and adjusting screw compresses the angle end of thermal element, compression
Spring I, to adjust the operating distance of bimetal leaf, bimetal leaf has super-high-current process, and temperature distortion is led to curving
Cross connecting rod I and pull moving contact upper end, moving contact is separated with static contact.
Described I, II uiform section that is flexible coupling.
The beneficial effects of the utility model are：The structure is mainly used in same cage in high current section miniature circuit breaker,
Two boss are left in front end on moving contact, and a boss I is connected to upper end in bimetal leaf with being flexible coupling, and another boss is used
It is flexible coupling on II connection thermal element, is so advantageous to electric current and is flowed to from two independent being flexible coupling on moving contact, be advantageous to electric current
Flowed through from the equilibrium of moving contact weldment, bimetal leaf, in the case of same conductor section, add solder side, reduce
Conductor temp.-elevating, the temperature rise of binding post is reduced, improve miniature circuit breaker reliability of operation.
Brief description of the drawings
Fig. 1 is the utility model embodiment structural representation.
Embodiment
A kind of miniature circuit breaker moving contact structure as shown in drawings, it includes moving contact 1, bimetal leaf 4, thermal element
5th, binding post 15, moving contact 1 is connected with bimetal leaf 4, bimetal leaf 4 is connected by thermal element 5 with binding post 15, is moved and is touched
First 1 is hinged with Shell of circuit breaker, and it is connected by the bat-handle switch 3 of connector and breaker, and bat-handle switch 3 acts, moving contact 1
Rotation contacts connection with static contact 2, and bimetal leaf 4 is also connected by connecting rod I 9 with moving contact 1, is deformed after bimetal leaf 4 is heated
Moving contact 1 is pulled, moving contact 1 is separated with static contact 2, the side of moving contact 1 is provided with two boss, and a boss passes through soft company
Connect I 10 to be connected with bimetal leaf 4, another boss II 11 is connected by being flexible coupling with thermal element 5, thermal element 5 and bimetal leaf 4
Bottom be provided with adjusting seat, adjusting seat includes adjusting screw 6 and spring I 7, and the bottom of thermal element 5 is arranged on adjustment spiral shell
Between nail 6 and spring I 7, adjusting screw 6 is threadedly coupled with Shell of circuit breaker, and rotation adjusting screw 6 adjusts the position of bimetal leaf
Put.
Described moving contact 1 is strip, and middle part is hinged with Shell of circuit breaker, and bottom is provided with towards static contact 2
Contact；Described connector includes connecting seat 12, connecting rod II 8, torsion spring 13, and the both ends of connecting rod II 8 are inner with bat-handle switch 3 respectively
Be hinged with connecting seat 12, moving contact 1 is connected by torsion spring 13 with connecting seat 12, and connecting seat 12 is hinged with the upper end of moving contact 1, even
One end of bar I is hinged with connecting seat, and the other end is connected with the upper end of bimetal leaf 4.
Described thermal element 5 is V-arrangement, and the lower end of bimetal leaf 4 of long plate shape is fixedly connected with the middle part angle end of thermal element 5,
Two side ends of thermal element 5 are fixedly connected with binding post and Shell of circuit breaker respectively, and adjusting screw compresses the angle of thermal element 5
End, compression spring I 7, to adjust the operating distance of bimetal leaf 4, bimetal leaf 4 has a super-high-current process, temperature distortion to
Curving, the upper end of moving contact 1 is pulled by connecting rod I 9, moving contact 1 is separated with static contact 2；The breaker is also set up simultaneously
Have trip protection electromagnetic switch 14, its can adhesive connecting seat 12, to separating brake.
Advantage of the present utility model is：
1. two boss are left in moving contact front end, the node face of welding is added, reduces temperature rise；2. in thermal element lower end
Add adjustment spring, aspect overload long delay characteristic adjustment；3. being shunted with two prismatic wires that are flexible coupling, increase
Radiating surface.
Described above is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of technical field
For personnel, on the premise of the utility model principle is not departed from, some improvement can also be made, wound is not being paid in these improvement
The scope of protection of the utility model is also should be regarded as under the premise of the property made work.
Claims (3)
1. a kind of miniature circuit breaker moving contact thermal trip system architecture, it includes moving contact, bimetal leaf, thermal element, wiring
Terminal, moving contact is connected with bimetal leaf, bimetal leaf is connected by thermal element with binding post, moving contact and Shell of circuit breaker
Be hinged, it is connected by the bat-handle switch of connector and breaker, and bat-handle switch action, moving contact rotation contacts company with static contact
Connect, it is characterized in that：Bimetal leaf is also connected by connecting rod I with moving contact, and moving contact side is provided with two boss, a boss
I it is connected by being flexible coupling with bimetal leaf, another boss II is connected by being flexible coupling with thermal element, thermal element and bimetal leaf
Bottom be provided with adjusting seat, adjusting seat includes adjusting screw and spring I, the bottom of thermal element be arranged on adjusting screw and
Between spring I.
2. miniature circuit breaker moving contact thermal trip system architecture according to claim 1, it is characterized in that：Described is dynamic tactile
Head is strip, and middle part is hinged with Shell of circuit breaker, and bottom is provided with the contact towards static contact；Described connector includes
Connecting seat, connecting rod II, torsion spring, the both ends of connecting rod II are hinged with bat-handle switch the inner and connecting seat respectively, and moving contact passes through torsion spring
It is connected with connecting seat, connecting seat is hinged with moving contact upper end, and one end and the connecting seat of connecting rod I are hinged, the other end and bimetallic
Piece upper end connects.
3. miniature circuit breaker moving contact thermal trip system architecture according to claim 1, it is characterized in that：Described heat member
Part is V-arrangement, and the bimetal leaf lower end of long plate shape is fixedly connected with the middle part angle end of thermal element, two side ends of thermal element respectively with
Binding post is fixedly connected with Shell of circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720766028.5U CN206864417U (en) | 2017-06-28 | 2017-06-28 | A kind of miniature circuit breaker moving contact thermal trip system architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720766028.5U CN206864417U (en) | 2017-06-28 | 2017-06-28 | A kind of miniature circuit breaker moving contact thermal trip system architecture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206864417U true CN206864417U (en) | 2018-01-09 |
Family
ID=60828815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720766028.5U Expired - Fee Related CN206864417U (en) | 2017-06-28 | 2017-06-28 | A kind of miniature circuit breaker moving contact thermal trip system architecture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206864417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821270A (en) * | 2021-01-23 | 2021-05-18 | 徐秋菊 | Intelligent device for preventing overload contact burning-out and short circuit for drawer type power distribution cabinet |
-
2017
- 2017-06-28 CN CN201720766028.5U patent/CN206864417U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821270A (en) * | 2021-01-23 | 2021-05-18 | 徐秋菊 | Intelligent device for preventing overload contact burning-out and short circuit for drawer type power distribution cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 |