CN209571367U - A kind of breaker of plastic casing element mounting structure - Google Patents
A kind of breaker of plastic casing element mounting structure Download PDFInfo
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- CN209571367U CN209571367U CN201920364835.3U CN201920364835U CN209571367U CN 209571367 U CN209571367 U CN 209571367U CN 201920364835 U CN201920364835 U CN 201920364835U CN 209571367 U CN209571367 U CN 209571367U
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- arc
- static contact
- insulating part
- chutes
- breaker
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Abstract
A kind of breaker of plastic casing element mounting structure, it is characterized by: insulating part (7) is located on the inside of the U-shaped bending of the static contact (1), insulating part (7) is covered since the U-shaped bending inside of the static contact (1) and is at least extended to from the static contact (1) top fold, and the insulating part (7) is equipped with location structure and can position to the arc-chutes (2) and magnetic inductive block (5) and realize the insulating part (7) when being installed into the static contact (1) from limit.Static contact, arc-chutes and magnetic inductive block are positioned with the self structure feature of insulating part, improve operability when breaker installation, and reduce the maintenance and debugging difficulty of subsequent breaker.
Description
Technical field
The utility model belongs to low-voltage circuit breaker technical field of structures, is specifically exactly to be related to a kind of breaker of plastic casing element
Mounting structure, more particularly, to the location and installation of static contact, magnetic conduction block part three elements of arc-chutes in low-voltage circuit breaker.
Background technique
Low-voltage circuit breaker is generally made of contact system, arc-chutes, operating mechanism, buckle releaser, shell etc., in contact system
Dynamic/static contact be mostly made of silver-plated copper billet conducting rod and silver contact, breaker disconnect when, contact apparatus dynamic/static contact reprimand
Generation electric arc is opened, in the cavity of arc-control device, the electric arc of generation enters under electrodynamic action to go out the moving line of moving contact
In arc grid, electric arc is divided into the concatenated short arc of several segments, such as a series of concatenated resistance, quickly improves arc voltage,
To achieve the purpose that arc extinguishing.
Three magnetic inductive block among static contact, static contact U-type groove, arc-chutes components among breaker usually lead to respectively
The location feature crossed on pedestal positions and forms a module.In this module the mutual distance between three be indirectly by
What the location feature size on pedestal was determined, cause the mutual distance between three components that can not be determined by itself, increases
The difficulty for having added debugging to repair.
Chinese patent ZL201721646740.8 discloses a kind of burn-out proof static contact component and arc quenching system.Static contact group
Part, including static contact and protective cradle, the static contact include power part, contact part, interconnecting piece and stationary contact.The guarantor
Protecting bracket includes sequentially connected drainage plate, isolation part and capouch portion.The isolation part for being isolated the bottom plate, including
Every the first spacing block and the second spacing block of setting.The drainage plate is adapted with the interconnecting piece.The capouch portion includes
The arch isolation board and the second arch isolation board being located on support plate shoulder respectively.Arc quenching system include arc-chutes and
Static contact component, static contact component are located at the arc-chutes bottom, which is correspondingly arranged with static contact, reduce stationary contact
Gap between head and arc-chutes enhances the air-blowing effect of arc extinguishing indoor gas.And at the same time static contact is protected by being isolated,
It is not invaded by electric arc, to avoid by the arc erosion of high temperature.But the protective cradle of the breaker is only served to static contact
Burn-out proof effect, can not play positioning action to magnetic inductive block and arc-chutes.
Chinese patent ZL 201380081061.9 discloses a kind of switchgear with electromagnetism arc driving mechanism, wherein
The switchgear has an arc-chutes, contact of the arc-chutes with stationary positioned and with the contact is positioned opposite to move
Contact, the electromagnetism arc driving mechanism is designed to the form of sheet metal, and the sheet metal surrounds the contact of the stationary positioned
Positioning, the first of the contact for the stationary positioned that the intermediate member being attached and U-shaped of the sheet metal of U-shaped design
Insulator is located between supporting leg and the second supporting leg, the insulator design is at U-shaped and has third supporting leg and the 4th supporting leg
And the connecting component between the third supporting leg and the 4th supporting leg, and wherein, the third branch of the insulator
Leg surrounds the first leg of the contact of the stationary positioned.The patented technology plays positioning action to magnetic inductive block, but
It is that positioning action can not be played to static contact and arc-chutes.
Utility model content
The purpose of this utility model is aiming at static contact in above-mentioned existing breaker of plastic casing, magnetic inductive block and arc-chutes
Relative position is determined by the location feature on pedestal, and the relative positional relationship between three components is caused to debug maintenance difficult
, it is difficult to the technological deficiency for looking for refill-unit provides a kind of breaker of plastic casing element mounting structure, utilizes the self structure of insulating part
Feature positions static contact, arc-chutes and magnetic inductive block, improves operability when breaker installation, and reduce open circuit
The maintenance and debugging difficulty of device.
Technical solution
In order to achieve the above technical purposes, a kind of breaker of plastic casing element mounting structure provided by the utility model, it is special
Sign is: insulating part is located on the inside of the U-shaped bending of the static contact, and insulating part is since on the inside of the U type bending of the static contact
It covers and at least extends at the static contact top fold, the insulating part is equipped with location structure can be to the arc-chutes
It is positioned with magnetic inductive block and realizes the insulating part when being installed into the static contact from limit.
Further, the location structure includes the groove that is equipped with of the insulating part for static contact described in location and installation
Magnetic inductive block in U-shaped bending, the arc-chutes, the insulation can be positioned by stretching out protrusion upwards on the two sides of the insulating part
At least side of part, which is equipped with downward convex block, can be such that the insulating part is realized when being installed into the static contact from limit.
Further, the protrusion, which protrudes into, touch the arc-chutes internal chamber wall and realizes determining for the arc-chutes in the arc-chutes
Position.
Further, the convex block extends to the lower section of the insulating part lower part Yu the static contact contact surface.Beneficial effect
A kind of breaker of plastic casing element mounting structure provided by the invention, with the self structure feature of insulating part to stationary contact
Head, arc-chutes and magnetic inductive block are positioned, and the maintenance and debugging difficulty of breaker is reduced.
Detailed description of the invention
Attached drawing 1 is the perspective view of arc-control device in the embodiment of the present invention.
Attached drawing 2 is the positional structure schematic diagram of isolation bar in the embodiment of the present invention.
Attached drawing 3 is the positional structure schematic diagram of link block in the embodiment of the present invention.
Attached drawing 4 is the positional structure schematic diagram of further groove of the embodiment of the present invention.
Attached drawing 5 is that gas hood structural schematic diagram is produced in the embodiment of the present invention.
Attached drawing 6 is insulating part structure schematic diagram in the embodiment of the present invention.
Attached drawing 7 is static contact structure schematic diagram in the embodiment of the present invention.
Attached drawing 8 is arc chute chip architecture schematic diagram in the embodiment of the present invention.
Attached drawing 9 is arc extinguishing grid pieces positional structure schematic diagram in the embodiment of the present invention.
Attached drawing 10 is the positional structure schematic diagram of arc striking piece in the embodiment of the present invention.
Attached drawing 11 is the structural schematic diagram of arc striking piece in the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is described in further details.
Embodiment
In order to solve conventional arc quenching chamber structure under high voltage environment to contact disconnect when generate electric arc elongation, disjunction,
It is easy to happen electrical breakdown in extinguishing process, eventually leads to long-time arcing；When disjunction high current, the air-flow of generation is toward moving contact one
Side (mechanism side) is mobile, drives electric arc to move inward, to burn out mechanism；Electric arc and moving contact breakdown risk are big after contact is opened
Technical problems such as (dynamic/static contact are in angle, and rear end is close, is easily punctured).The present embodiment devises a kind of arc-control device, such as 1 institute of attached drawing
Show, it includes static contact 1, and arc-chutes 2 are stretched mounted in 1 top of static contact, the grid foot 201 of the arc extinguishing grid pieces of the arc-chutes 2
Enter to produce in gas hood 3, as shown in figs. 4 and 5, outside 202 bottom of groove of the arc extinguishing grid pieces of the arc-chutes 2 and the production gas hood 3
Side end 305 is as far as possible close to distance is not more than 2 millimeters.The engagement and disconnection of moving contact 4 and static contact 1 control breaker
On-off, wherein as shown in Fig. 5, the productions gas hood 3 includes left chamber 301 and right chamber 302, in the present embodiment, the left side
Chamber 301 and right chamber 302 are integral type.The grid foot 201 of the arc extinguishing grid pieces of the arc-chutes 2 protrudes into corresponding left chamber 301
In the isolation channel 301a, 302a in right chamber 302, as shown in Fig. 2, the left chamber 301 and 302 bottom of right chamber are set
There is at least one isolation bar 303,303 ', the isolation bar 303,303 ' is located at the quiet silver point on magnetic inductive block 5 and the static contact 1
Risen between 101 arc and with 5 insulating effect of magnetic inductive block, as shown in Fig. 3, the bottom of the left chamber 301 and right chamber 302
Between be provided with link block 304, the link block 304 is located at the outside of quiet silver point 101, and the top in static contact 1 has
Arc effect.Fixed on the moving contact 4 to produce gas part 6 equipped with moving contact, the moving contact produces gas part 6 and is located at moving contact 4 and quiet
Between contact 1, in particular, it is U-shaped structure that moving contact described in the present embodiment, which produces gas part 6, the bottom surface of U-shaped structure is located at dynamic touching
Position between first 4 and static contact 1.
In addition further, the relative position of static contact, magnetic inductive block and arc-chutes is by pedestal in existing breaker of plastic casing
On location feature determine, cause relative positional relationship between three components to debug maintenance difficult, it is difficult to look for refill-unit
A kind of breaker of plastic casing element mounting structure has also been devised in the present embodiment, using the self structure feature of insulating part to stationary contact
Head, arc-chutes and magnetic inductive block are positioned, and the maintenance and debugging difficulty of breaker is reduced.Breaker of plastic casing element mounting structure is
Be achieved: as shown in attached drawing 1,6 and 7, insulating part 7 is located on the inside of the U-shaped bending of the static contact 1, and insulating part 7 is from described
102 start to cover and at least extend to 103 at 1 top fold of static contact on the inside of the U-shaped bending of static contact 1, the insulation
Part 7 be equipped with location structure the arc-chutes 2 and magnetic inductive block 5 can be positioned and make the insulating part 7 be installed into it is described
It is realized when static contact 1 from limit.
In particular, as shown in Fig. 6, the location structure includes that the insulating part 7 is equipped in the present embodiment
Groove 701 is for the magnetic inductive block 5 in the U-shaped bending of static contact 1 described in location and installation, on the two sides of the insulating part 7 upwards
The arc-chutes 2 can be positioned by stretching out protrusion 702,702 ', and at least side of the insulating part 7 is equipped with downward 703 energy of convex block
Realize the insulating part 7 when being installed into the static contact 1 from limit.Described raised 702,702 ' protrude into the arc-chutes
The positioning that 2 internal chamber wall of arc-chutes realizes the arc-chutes 2 is touched in 2.The convex block 703 extends under the insulating part 7
The lower section in portion and 1 contact surface of static contact.The mounting structure is using the self structure feature of insulating part to static contact, arc-chutes
It is positioned with magnetic inductive block, reduces the maintenance and debugging difficulty of breaker.
Meanwhile the present embodiment is also by the improvement to arc-chutes arc extinguishing grid pieces layout structure, so that breaker is in high voltage
Electric arc elongation, the disjunction, extinguishing generated when can effectively be disconnected to contact in use environment.As shown in figs. 8 and 9, specific
Structure is that the arc extinguishing grid pieces of the arc-chutes 2 successively go out including arc striking piece 203, top arc extinguishing grid pieces group 204, middle part from top to bottom
Arc grid group 205 and bottom arc extinguishing grid pieces group 206, the arc extinguishing grid pieces both ends of the arc-chutes 2 are inserted on bracket 207, such as attached
Shown in Figure 10 and 11, the top arc striking piece 203 includes base portion 203a and end 203b, and the end 203b protrudes from the base
It portion 203 and tilts upward, and the base portion 203a and end 203b are V-shaped.As shown in attached drawing 9 and 10, the top arc-chute
Piece group 204 is shorter in length than length of the middle part arc extinguishing grid pieces group 205 towards 4 side of moving contact, institute towards 4 side of moving contact
It states top arc extinguishing grid pieces group 204 and is laterally away from the fan-shaped distribution from top to bottom of 4 side of moving contact from towards moving contact 4, it is described
The curvilinear path that the end of top arc extinguishing grid pieces group 204 towards 4 side of moving contact is formed is corresponding with 4 motion profile of moving contact,
The bottom arc extinguishing grid pieces group 206 is shorter in length than the middle part arc extinguishing grid pieces group 205 towards dynamic touching towards 4 side of moving contact
The length of first 4 side, the middle part arc extinguishing grid pieces group 205 and bottom arc extinguishing grid pieces group 206 are parallel to each other, the top arc striking piece
203 and bottom arc extinguishing grid pieces group 206 thickness be greater than top arc extinguishing grid pieces group 204 and middle part arc extinguishing grid pieces group 205 thickness.
Meanwhile as shown in Fig. 9, the middle part arc extinguishing grid pieces group 205 and bottom arc extinguishing grid pieces group 206 are far from moving contact 4
The end line of side is linear, and end line of the top arc extinguishing grid pieces group 204 far from 4 side of moving contact is in smooth song
Line, end line and top arc extinguishing grid pieces group 204 of the middle part arc extinguishing grid pieces group 205 far from 4 side of moving contact are far from dynamic touching
The joining place of the end line of first 4 side is to smoothly transit.
In order to make arc-chutes have best arc quenching effect, in the present embodiment, the quantity of the arc striking piece 203 is preferably 1
Piece, described 204 quantity of top arc extinguishing grid pieces group preferably 5~9,205 quantity preferably 11~15 of middle part arc extinguishing grid pieces group
Piece, described 206 quantity of bottom arc extinguishing grid pieces group preferably 1~3.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of breaker of plastic casing element mounting structure, it is characterised in that: insulating part (7) is located at the U-shaped folding of the static contact (1)
Curved inside, insulating part (7) cover since the U-shaped bending inside of the static contact (1) and at least extend to the static contact (1)
At top fold, the insulating part (7) be equipped with location structure the arc-chutes (2) and magnetic inductive block (5) can be positioned and
Realize the insulating part (7) when being installed into the static contact (1) from limit.
2. a kind of breaker of plastic casing element mounting structure as described in claim 1, it is characterised in that: the location structure includes
The groove (701) that the insulating part (7) is equipped with is for the magnetic inductive block in the U-shaped bending of static contact (1) described in location and installation
(5), stretching out raised (702,702 ') on the two sides of the insulating part (7) upwards can position the arc-chutes (2), described exhausted
At least side of edge part (7), which is equipped with downward convex block (703), can make the insulating part (7) be installed into the static contact (1)
Shi Shixian is limited certainly.
3. a kind of breaker of plastic casing element mounting structure as claimed in claim 2, it is characterised in that: the protrusion (702,
702 ') it protrudes into and touch the positioning that the arc-chutes (2) internal chamber wall realizes the arc-chutes (2) in the arc-chutes (2).
4. a kind of breaker of plastic casing element mounting structure as claimed in claim 2, it is characterised in that: the convex block (703) is prolonged
Reach the lower section of the insulating part (7) lower part Yu the static contact (1) contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920364835.3U CN209571367U (en) | 2019-03-21 | 2019-03-21 | A kind of breaker of plastic casing element mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920364835.3U CN209571367U (en) | 2019-03-21 | 2019-03-21 | A kind of breaker of plastic casing element mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209571367U true CN209571367U (en) | 2019-11-01 |
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ID=68335419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920364835.3U Active CN209571367U (en) | 2019-03-21 | 2019-03-21 | A kind of breaker of plastic casing element mounting structure |
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| Country | Link |
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| CN (1) | CN209571367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885675A (en) * | 2021-03-24 | 2021-06-01 | 西屋低压开关设备(镇江)有限公司 | Modular single-breakpoint contact arc extinguishing device |
-
2019
- 2019-03-21 CN CN201920364835.3U patent/CN209571367U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885675A (en) * | 2021-03-24 | 2021-06-01 | 西屋低压开关设备(镇江)有限公司 | Modular single-breakpoint contact arc extinguishing device |
| CN112885675B (en) * | 2021-03-24 | 2024-07-05 | 西屋开关设备(江苏)有限公司 | Modularized single-breakpoint contact arc extinguishing device |
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