CN101888067B - Draw-out type pre-tripping device of low-voltage circuit breaker - Google Patents
Draw-out type pre-tripping device of low-voltage circuit breaker Download PDFInfo
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- CN101888067B CN101888067B CN2010102200610A CN201010220061A CN101888067B CN 101888067 B CN101888067 B CN 101888067B CN 2010102200610 A CN2010102200610 A CN 2010102200610A CN 201010220061 A CN201010220061 A CN 201010220061A CN 101888067 B CN101888067 B CN 101888067B
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- circuit breaker
- gag lever
- lever post
- draw
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Abstract
The invention discloses a draw-out type pre-tripping device of a low-voltage circuit breaker, belonging to the field of low-voltage apparatus. The draw-out type pre-tripping device is positioned in a hole of a circuit breaker base and comprises a limiting rod, a sleeve and a pressure spring, wherein the limiting rod is in a cylindrical structure, one side at the circumference of the top end of the limiting rod protrudes and extends to form a boss, an outer ring at the upper-middle part of the limiting rod protrudes and extends to form an annular boss; the annular boss extends in the axial direction of the limiting rod to form a side wall boss which is matched with a recess in the hole, the bottom end of the side wall of the limiting rod is provided with a barb-shaped structure, and the barb-shaped structure is provided with an upward opening which extends in the axial direction of the limiting rod from the bottom wall of the limiting rod; the sleeve is in a hollow cylindrical structure, and the pressure spring is arranged between the side wall boss and the upper end of the sleeve; the inner diameter of the hole is less than the outer diameter of the annular boss, and the boss is in contact with a draw rod boss arranged on a draw rod and blocks the rotation of the draw rod boss, so that the misoperation of the circuit breaker, caused by the condition that the circuit breaker is not in reliable contact with a drawer base, can be prevented, and potential safety hazards are avoided.
Description
Technical field
The present invention relates to the mold cased circuit breaker parts in a kind of low-voltage electrical apparatus field, relate in particular to the draw-out type pre-tripping device that is used for jumbo mold cased circuit breaker.
Background technology
Along with the develop rapidly of China's modernization and power industry, low-voltage circuit breaker has obtained using widely, and wherein, homemade jumbo mold cased circuit breaker has also obtained development faster because price is hanged down.Mold cased circuit breaker is a kind of safe, reliable, economic low-voltage circuit breaker; The withdrawing device of circuit breaker is the attachment of circuit breaker and drawout chassis, but at present has certain potential safety hazard in use during withdrawing device, when circuit breaker is installed into drawout chassis; If do not contact the energising that just closes a switch with the drawout chassis contact is reliable; Can produce electric spark between contact, can burn circuit breaker when serious, have great potential safety hazard.
Summary of the invention
To the potential safety hazard of the withdrawing device of existing mold cased circuit breaker, the present invention provides a kind of draw-out type pre-tripping device of mold cased circuit breaker, guarantees that circuit breaker contacts with the reliable of drawout chassis contact, guarantees safe action.
The technical scheme that the present invention adopts is: the present invention is positioned at the hole on the circuit breaker base, and the hole is made up of gag lever post, sleeve pipe and stage clip near the draw bar that is connected in the circuit breaker base; Gag lever post is a cylindrical structure, the side-prominent boss that is extended with that its top is circumferential, the outstanding annular boss that is extended with on the outer ring of position, upper middle; On annular boss, along the sidewall boss that extended axially of gag lever post, the groove in sidewall boss and the hole matches, and gag lever post sidewall bottom has a barb-shaped structure, the axial upward opening of barb-shaped structure from the diapire of gag lever post along gag lever post; Sleeve pipe is a hollow cylinder body structure, and its sidewall is provided with the groove that matches with barb-shaped structure, and groove is communicated with the diapire of sleeve pipe, between stage clip is arranged on sidewall boss and the sleeve pipe; The internal diameter in said hole is less than the external diameter of annular boss, and boss contacts the draw bar boss that has to the draw bar and stops that the draw bar boss rotates.
The invention has the beneficial effects as follows: through whether contacting of gag lever post bottom and circuit breaker drawer base inwall, control the action of draw bar, can prevent the misoperation of circuit breaker when circuit breaker does not reliably contact with drawout chassis, stop potential safety hazard.Simple in structure, assembling is reliable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is a general assembly structure chart of the present invention;
Fig. 2 and Fig. 3 are the structure charts of gag lever post 1 among Fig. 1;
Fig. 4 is the structure chart of Fig. 1 middle sleeve 2;
Fig. 5 is the present invention and the installation diagram that cooperates of circuit breaker base 4;
Among the figure: 1. gag lever post; 2. sleeve pipe; 3. stage clip; 4. circuit breaker base; 5. draw bar; 6. hole; 11. boss; 12. annular boss; 13. sidewall boss; 14. barb-shaped structure; 15. diapire; 21. sleeve pipe upper end; 22. diapire; 23. groove; 51. draw bar boss.
Embodiment
As shown in Figure 1, the present invention is made up of gag lever post 1, sleeve pipe 2 and stage clip 3.Sleeve pipe 2 is coated at gag lever post 1 lower end, and stage clip 3 is outer to be enclosed within on the gag lever post 1 and an end of stage clip 3 is pressed against the upper end of sleeve pipe 2.
Like Fig. 2, shown in 3, gag lever post 1 is a cylindrical structure, circumferential boss 11 of a side-prominent extension on its top.Annular boss 12 of outstanding extension on the outer ring of position, gag lever post 1 upper middle.On annular boss 12, along the sidewall boss 13 that extends axially of gag lever post 1.In gag lever post 1 sidewall bottom a barb-shaped structure 14 is set, the axial upward opening of barb-shaped structure 14 from the diapire 15 of gag lever post 1 along gag lever post 1.
As shown in Figure 4, sleeve pipe 2 is a hollow cylinder body structure, and the sidewall of sleeve pipe 2 is provided with the groove 23 that matches with barb-shaped structure 14, and groove 23 is communicated with the diapire 22 of sleeve pipes 2.
When the present invention assembles, sleeve pipe 2 is inserted in from gag lever post 1 lower end, groove 23 matches on the barb-shaped structure 14 that makes gag lever post 1 and the sleeve pipe 2, can prevent that sleeve pipe 2 from dropping.Stage clip 3 is installed between sidewall boss 13 and the sleeve pipe upper end 21 of gag lever post 1, and the elastic force of 3 pairs of sleeve pipe 2 sides of stage clip can prevent effectively that gag lever post 1 lower end from also upwards lifting at the situation gag lever post 1 that does not receive power.
As shown in Figure 5; When the present invention uses, it is installed in the corresponding aperture 6 that is provided with on the circuit breaker base 4, hole 6 is near the draw bar that is connected in circuit breaker base 45; The internal diameter in hole 6 is less than the external diameter of annular boss 12, annular boss 12 can prevent gag lever post 1 in hole 6 to lower slider.Sidewall boss 13 on the gag lever post 1 is matched with hole 6 interior grooves, can prevent gag lever post 1 left-right rotation in hole 6 like this.The draw bar 5 of circuit breaker base 4 is arranged near the hole 6, the boss 11 of the draw bar boss 51 limited bars 1 that extend on the draw bar 5 is stopped, gag lever post 1 stops the rotation of draw bar 5 through its boss 11, plays the effect that prevents the circuit breaker action.When circuit breaker was not installed into drawout chassis fully, the boss 11 of gag lever post 1 contacted the draw bar boss 51 to the draw bar 5, stopped draw bar boss 51 and rotated.
When circuit breaker was installed into drawout chassis fully, sleeve pipe 2 bottoms received the power of drawout chassis inwall, promoted gag lever post 1 and upwards lifted, and boss 11 leaves and the contacting of draw bar 5, and the rotation of draw bar 5 is unrestricted.Like this, control draw bar 5 with whether contacting of drawout chassis inwall, prevent the misoperation of circuit breaker when circuit breaker does not reliably contact with drawout chassis through gag lever post 1 bottom.Because draw bar 5 is a kind of vitals of triping in the circuit breaker, when overload or short circuit took place, bimetallic element or electromagnet armature collision draw bar 5 made snap close and tripping on it throw off circuit breaker trip under the effect of main force's spring.And gag lever post 1 of the present invention is when circuit breaker reliably contacts with the drawout chassis contact, and the boss 11 of gag lever post 1 is pushed down the draw bar boss 51 of draw bar 5, makes circuit breaker to thread off again, thereby circuit breaker can't feed motion, has stopped potential safety hazard; When circuit breaker reliably contacted with the drawout chassis contact, owing to receive the power of drawout chassis diapire, the boss 11 on the gag lever post 1 left the restriction to draw bar 5, and draw bar 5 can regular event.
Claims (1)
1. the draw-out type pre-tripping device of a low-voltage circuit breaker; This pre-tripping device is positioned at the hole (6) on the circuit breaker base (4); Hole (6) is characterized in that near the draw bar (5) on the circuit breaker base (4): this pre-tripping device is made up of gag lever post (1), sleeve pipe (2) and stage clip (3); Gag lever post (1) is a cylindrical structure, the side-prominent boss (11) that is extended with that its top is circumferential, the outstanding annular boss (12) that is extended with on the outer ring of position, upper middle; On annular boss (12); The sidewall boss (13) that extended axially along gag lever post (1); Sidewall boss (13) matches with the interior groove in hole (6); Gag lever post (1) sidewall bottom has a barb-shaped structure (14), the axial upward opening of barb-shaped structure (14) from the diapire (15) of gag lever post (1) along gag lever post (1); Sleeve pipe (2) is a hollow cylinder body structure, and its sidewall is provided with the groove (23) that matches with barb-shaped structure (14), and said groove (23) is communicated with the diapire (22) of sleeve pipe (2), and stage clip (3) is arranged on sidewall boss (13) and the sleeve pipe between (21); The internal diameter in said hole (6) is less than the external diameter of annular boss (12), and boss (11) contacts the draw bar boss (51) that has to the draw bar (5) and stops that draw bar boss (51) rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102200610A CN101888067B (en) | 2010-07-08 | 2010-07-08 | Draw-out type pre-tripping device of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102200610A CN101888067B (en) | 2010-07-08 | 2010-07-08 | Draw-out type pre-tripping device of low-voltage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101888067A CN101888067A (en) | 2010-11-17 |
| CN101888067B true CN101888067B (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102200610A Active CN101888067B (en) | 2010-07-08 | 2010-07-08 | Draw-out type pre-tripping device of low-voltage circuit breaker |
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| Country | Link |
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| CN (1) | CN101888067B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2396507Y (en) * | 1999-09-07 | 2000-09-13 | 卢志信 | Keying release |
| CN1901125A (en) * | 2006-07-20 | 2007-01-24 | 常熟开关制造有限公司(原常熟开关厂） | Tripping device for breaker operation mechanism |
| CN101685727A (en) * | 2009-05-11 | 2010-03-31 | 江苏辉能电气有限公司 | Quick releasing device for miniaturized circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002352693A (en) * | 2001-05-28 | 2002-12-06 | Fuji Electric Co Ltd | Electromagnetic trip device for circuit breaker |
-
2010
- 2010-07-08 CN CN2010102200610A patent/CN101888067B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2396507Y (en) * | 1999-09-07 | 2000-09-13 | 卢志信 | Keying release |
| CN1901125A (en) * | 2006-07-20 | 2007-01-24 | 常熟开关制造有限公司(原常熟开关厂） | Tripping device for breaker operation mechanism |
| CN101685727A (en) * | 2009-05-11 | 2010-03-31 | 江苏辉能电气有限公司 | Quick releasing device for miniaturized circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101888067A (en) | 2010-11-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220526 Address after: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee after: Huineng low voltage electric appliance (Jiangsu) Co.,Ltd. Address before: 212132 mechanical and Electrical Industrial Park, Dagang East Road, Dagang District, Zhenjiang, Jiangsu A5 Patentee before: Jiangsu Phono Electric Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee after: Eaton Huineng low voltage electrical appliances (Jiangsu) Co.,Ltd. Address before: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee before: Huineng low voltage electric appliance (Jiangsu) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |