CN103337422B - Tripping device of moulded case circuit breaker - Google Patents
Tripping device of moulded case circuit breaker Download PDFInfo
- Publication number
- CN103337422B CN103337422B CN201310249024.6A CN201310249024A CN103337422B CN 103337422 B CN103337422 B CN 103337422B CN 201310249024 A CN201310249024 A CN 201310249024A CN 103337422 B CN103337422 B CN 103337422B
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- screw rod
- axle sleeve
- pull bar
- iron core
- circuit breaker
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Abstract
The invention relates to a tripping device of a moulded case circuit breaker and mainly aims to solve the problem that low-current and over-current tripping devices are cumbersome to adjust and inconvenient to use. A pull rod (1) is connected with an iron core (4) with a screw (2); a spacing ring (8) is arranged on an axle sleeve (9) and corresponds to the outer ring of the screw (2); an adjusting screw nut (3) is in threaded transmission connection with the screw (2) and corresponds to a position between the iron core (4) and the spacing ring (8); a positioning groove (91) for preventing the adjusting screw nut (3) from rotating in the circumferential direction is arranged on the axle sleeve (9); the adjusting screw nut can slide axially in the positioning groove (91); a screwing part (13) is arranged at the end of the screw (2), which corresponds to the pull rod (1). The tripping device has the effects of convenience in adjustment and high operability.
Description
Technical field
The present invention relates to a kind of mold cased circuit breaker, refer in particular to a kind of mold cased circuit breaker release.
Background technology
Breaker of plastic casing is protective device important in low-voltage distribution system; connection, disjunction running current is played in low-voltage distribution system; and the effect of automatically disengagement failure electric current is rapidly played when circuit malfunctions, generally comprise the compositions such as contact arc-extinguishing system, operating mechanism, controller, manual tripping device and release.
The effect of release converts electrical energy into mechanical action, makes breaker of plastic casing separating brake when receiving trip signal.Traditional release is divided into electronic trip unit and Pyromagnetic release etc., is generally circuit breaker internal and installs, and coordinates the draw bar of breaker of plastic casing to realize trip action.
The release of small area analysis specification breaker of plastic casing conventional is at present primarily of coil, iron core, spring, pull bar, support composition.When coil produces magnetic field by coil inside during alternating current, iron core overcomes spring force and pulls pull bar, and pull bar pulls the draw bar of the operating mechanism of circuit breaker, makes breaker open operation.The pull bar of existing release is directly fixedly connected with iron core, and activity is engaged on axle sleeve, effective dropout distance of pull bar is controlled by iron core and axle sleeve axial limiting, which regulates iron core distance when pre-installing, when release needs adjustment calibration drop-away current, then need again to process iron core part or other correlated parts, there is adjustment loaded down with trivial details, make troubles to assembling and use.
Summary of the invention
In order to overcome deficiency in background technology and defect, the invention provides a kind of mold cased circuit breaker release, mainly solving existing small area analysis overcurrent trip and existing in use and regulate loaded down with trivial details, awkward problem.
Technical scheme of the present invention is: a kind of mold cased circuit breaker release, comprise axle sleeve, coil and iron core, being provided with in described axle sleeve can for the containing cavity of iron core axial slip, described coil, axle sleeve and iron core are socketed from outside to inside successively, described axle sleeve two ends are respectively equipped with yoke and pull bar, between described yoke and iron core, resilient engagement has spring, described pull bar is connected with the iron core with screw rod, on described axle sleeve, corresponding screw rod outer ring is provided with spacing ring, on described screw rod, between corresponding iron core and spacing ring, screw-driven is connected with adjusting nut, described axle sleeve is provided with the suitable location notch that the described adjusting nut of restriction rotates in a circumferential direction, described adjusting nut can in described location notch axial slip, on described screw rod, corresponding pull bar one end is provided with the portion of turning.
Described axle sleeve two ends compression fit has the mounting bracket be connected with housing, and described spacing ring compression fit is between described axle sleeve and mounting bracket, and on mounting bracket, the outer ring of corresponding screw rod is provided with the construction opening groove that can skid off for screw rod.
Described screw rod is provided with the polished rod section removing outer ring screw thread, described pull bar is provided with the connection opening groove matched with polished rod section, described pull bar slips into screw rod by connection opening groove and forms matched in clearance, described screw rod is threaded and the clamp nut of pull bar top press-fit.
Described screw rod is provided with the minor diameter thread segment of stepped profile, described pull bar is provided with the connecting hole matched with minor diameter thread segment, described screw rod penetrates pull bar by minor diameter thread segment and forms matched in clearance, described screw rod is threaded and presses nut with the top of pull bar top press-fit.
Described adjusting nut is hex nut, and described location notch is the hexagonal groove suitable with described hex nut.
The described portion of turning is for regulating open slot.
Beneficial effect of the present invention: owing to taking such scheme, mold cased circuit breaker release of the present invention, the spacing ring that axle sleeve is arranged, when rotating thread screw, by the transmission of adjusting nut, effectively can control the distance of iron core and yoke, and axle sleeve is for being fixed on housing, namely have adjusted the dropout electromagnetic force of tripping system, ensure that release action in the current range of regulation, make circuit breaker separating brake accurately and reliably, there is easy to adjust, that operability is high effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the structure cross-sectional schematic of Fig. 1 bottom bracket axle.
Fig. 3 is the partial sectional view of the embodiment of the present invention one.
Fig. 4 is the partial sectional view of the embodiment of the present invention two.
In figure, 1-pull bar, 2-screw rod, 3-adjusting nut, 4-iron core, 5-coil, 6-spring, 7-yoke, 8-spacing ring, 9-axle sleeve, 91-location notch, 10-containing cavity, 11-mounting bracket, 111-construction opening groove, 12-clamp nut, 13-turns portion, 14-polished rod section, minor diameter thread segment 14 ', 15-connection opening groove, connecting hole 15 '.
Embodiment
For accompanying drawing, embodiments of the invention are described further below:
Embodiment one:
Shown in Fig. 1-3, this mold cased circuit breaker release, comprise axle sleeve 9, coil 5 and iron core 4, being provided with in described axle sleeve 9 can for the containing cavity 10 of iron core 4 axial slip, described coil 5, axle sleeve 9 and iron core 4 are socketed from outside to inside successively, described axle sleeve 9 two ends are respectively equipped with yoke 7 and pull bar 1, between described yoke 7 and iron core 4, resilient engagement has spring 6, described pull bar 1 is connected with the iron core 4 with screw rod 2, on described axle sleeve 9, corresponding screw rod 2 outer ring is provided with spacing ring 8, on described screw rod 2, between corresponding iron core 4 and spacing ring 8, screw-driven is connected with adjusting nut 3, described axle sleeve 9 is provided with the suitable location notch 91 that the described adjusting nut 3 of restriction rotates in a circumferential direction, described adjusting nut can in described location notch 91 axial slip, on described screw rod 2, corresponding pull bar 1 one end is provided with the portion of turning 13.Describedly turn the rotary handle that portion can drive bolt rotary, regulate open slot and rolling disc etc., as preferably adopting the adjustment open slot matched with screwdriver, described spacing ring can be connected by screw rod with axle sleeve, compression fit, the removablies such as clamping connect, as preferably, compression fit mode is adopted to connect, when needing to regulate, only need to utilize the adjustment open slot rotary screw on thread screw as straight screwdriver with instrument, at spacing ring under the axial limiting effect in the up direction of adjusting nut, make the screw-driven of screw rod relative adjustment nut, effectively can control the distance of iron core and yoke, and axle sleeve is for being fixed on housing, namely have adjusted the dropout electromagnetic force of release, ensure that release pulls draw bar accurately within the scope of rated current, make breaker open operation, have easy to adjust, the effect that operability is high.
Described axle sleeve 9 two ends compression fit has the mounting bracket 11 be connected with housing, and described spacing ring 8 compression fit is between described axle sleeve 9 and mounting bracket 11, and on mounting bracket 11, the outer ring of corresponding screw rod 2 is provided with the construction opening groove 111 that can skid off for screw rod 2.By the compression fit of mounting bracket to spacing ring, needs are debugged and when safeguarding, only need remove and install support can disassemble out spacing ring easily, adjusts spring or other part, exchanges, and have to install and stablize, convenient disassembly, the effect that operability is high.
Described screw rod 2 is provided with the polished rod section 14 removing outer ring screw thread, described pull bar 1 is provided with the connection opening groove 15 matched with polished rod section 14, described pull bar 1 slips into screw rod 2 by connection opening groove 15 and forms matched in clearance, described screw rod 2 is threaded and pushes up the clamp nut 12 of press-fit with pull bar 1.By plug-in type matched in clearance, after using screwdriver rotary screw to regulate, clamp nut is tightened, firmly effect easy to assembly.
Described adjusting nut 3 is hex nut, and described location notch 91 is the hexagonal groove suitable with described hex nut, and structure is simple, the effect of stable transmission.
The described portion 13 that turns is for regulating open slot.Certainly the portion that turns described in can for driving the rotary handle of bolt rotary, regulating open slot and rolling disc etc., as preferably adopting the adjustment open slot matched with screwdriver, when needing to regulate, only need to utilize the adjustment open slot rotary screw on thread screw as straight screwdriver with instrument, structure is simple, easy to assembly.
Embodiment two:
As shown in Figure 4, this mold cased circuit breaker release, described screw rod 2 is provided with the minor diameter thread segment 14 ' of stepped profile, described pull bar 1 is provided with the connecting hole 15 ' matched with minor diameter thread segment 14 ', described screw rod 2 penetrates pull bar 1 by minor diameter thread segment 14 ' and forms matched in clearance, and nut 12 is pressed on the top of pushing up press-fit with pull bar 1 that described screw rod 2 is threaded.By the compression fit of mounting bracket to spacing ring, needs are debugged and when safeguarding, only need remove and install support can disassemble out spacing ring easily, adjusts spring or other part, exchanges, and have to install and stablize, convenient disassembly, the effect that operability is high.Other technologies feature all duplicates with embodiment one, repeats no more herein.
Embodiment should not be considered as the restriction to invention, but any improvement done based on spirit of the present invention, all should within protection scope of the present invention.
Claims (5)
1. a mold cased circuit breaker release, comprise axle sleeve (9), coil (5) and iron core (4), the containing cavity (10) that can supply iron core (4) axial slip is provided with in described axle sleeve (9), described coil (5), axle sleeve (9) and iron core (4) are socketed from outside to inside successively, described axle sleeve (9) two ends are respectively equipped with yoke (7) and pull bar (1), between described yoke (7) and iron core (4), resilient engagement has spring (6), it is characterized in that: described pull bar (1) is connected with the iron core (4) with screw rod (2), upper corresponding screw rod (2) outer ring of described axle sleeve (9) is provided with spacing ring (8), on described screw rod (2), between corresponding iron core (4) and spacing ring (8), screw-driven is connected with adjusting nut (3), described axle sleeve (9) is provided with the suitable location notch (91) that the described adjusting nut of restriction (3) rotates in a circumferential direction, described adjusting nut can in described location notch (91) axial slip, upper corresponding pull bar (1) one end of described screw rod (2) is provided with the portion of turning (13), described screw rod (2) is provided with the polished rod section (14) removing outer ring screw thread, described pull bar (1) is provided with the connection opening groove (15) matched with polished rod section (14), described pull bar (1) slips into screw rod (2) by connection opening groove (15) and forms matched in clearance, described screw rod (2) is threaded and pushes up the clamp nut (12) of press-fit with pull bar (1).
2. mold cased circuit breaker release according to claim 1, it is characterized in that: described axle sleeve (9) two ends compression fit has the mounting bracket (11) be connected with housing, described spacing ring (8) compression fit is between described axle sleeve (9) and mounting bracket (11), and the outer ring of the upper corresponding screw rod (2) of mounting bracket (11) is provided with the construction opening groove (111) that screw rod (2) can be supplied to skid off.
3. mold cased circuit breaker release according to claim 1 and 2, it is characterized in that: described screw rod (2) is provided with the minor diameter thread segment (14 ') of stepped profile, described pull bar (1) is provided with the connecting hole (15 ') matched with minor diameter thread segment (14 '), described screw rod (2) penetrates pull bar (1) by minor diameter thread segment (14 ') and forms matched in clearance, and nut (12) is pressed on the top of pushing up press-fit with pull bar (1) that described screw rod (2) is threaded.
4. mold cased circuit breaker release according to claim 1 and 2, is characterized in that: described adjusting nut (3) is hex nut, and described location notch (91) is the hexagonal groove suitable with described hex nut.
5. mold cased circuit breaker release according to claim 1 and 2, is characterized in that: described in turn portion (13) for regulate open slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310249024.6A CN103337422B (en) | 2013-06-21 | 2013-06-21 | Tripping device of moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310249024.6A CN103337422B (en) | 2013-06-21 | 2013-06-21 | Tripping device of moulded case circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103337422A CN103337422A (en) | 2013-10-02 |
| CN103337422B true CN103337422B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310249024.6A Active CN103337422B (en) | 2013-06-21 | 2013-06-21 | Tripping device of moulded case circuit breaker |
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| Country | Link |
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| CN (1) | CN103337422B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69201999T2 (en) * | 1991-05-21 | 1995-11-23 | Schneider Electric Sa | Electromagnetic release for a low-voltage switch. |
| EP0834895A1 (en) * | 1996-09-23 | 1998-04-08 | Schneider Electric Sa | An electromagnetic trip for an electrical apparatus for protection |
| US6218921B1 (en) * | 2000-02-24 | 2001-04-17 | Eaton Corporation | Adjustable flux transfer shunt trip actuator and electric power switch incorporating same |
| CN1165921C (en) * | 1998-05-07 | 2004-09-08 | 尹顿公司 | Drive assembly with calibrating equipment |
| CN101490784A (en) * | 2006-07-20 | 2009-07-22 | 西门子公司 | Adjustable short-circuit release |
| CN101527230A (en) * | 2008-03-03 | 2009-09-09 | 富士电机机器制御株式会社 | Electromagnetical tripping apparatus of circuit breaker |
| CN201780940U (en) * | 2010-06-22 | 2011-03-30 | 杭州之江开关股份有限公司 | Novel structure of electromagnet of high-voltage circuit breaker |
| CN203288551U (en) * | 2013-06-21 | 2013-11-13 | 浙江电器开关有限公司 | Release of molded case circuit breaker |
-
2013
- 2013-06-21 CN CN201310249024.6A patent/CN103337422B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69201999T2 (en) * | 1991-05-21 | 1995-11-23 | Schneider Electric Sa | Electromagnetic release for a low-voltage switch. |
| EP0834895A1 (en) * | 1996-09-23 | 1998-04-08 | Schneider Electric Sa | An electromagnetic trip for an electrical apparatus for protection |
| CN1165921C (en) * | 1998-05-07 | 2004-09-08 | 尹顿公司 | Drive assembly with calibrating equipment |
| US6218921B1 (en) * | 2000-02-24 | 2001-04-17 | Eaton Corporation | Adjustable flux transfer shunt trip actuator and electric power switch incorporating same |
| CN101490784A (en) * | 2006-07-20 | 2009-07-22 | 西门子公司 | Adjustable short-circuit release |
| CN101527230A (en) * | 2008-03-03 | 2009-09-09 | 富士电机机器制御株式会社 | Electromagnetical tripping apparatus of circuit breaker |
| CN201780940U (en) * | 2010-06-22 | 2011-03-30 | 杭州之江开关股份有限公司 | Novel structure of electromagnet of high-voltage circuit breaker |
| CN203288551U (en) * | 2013-06-21 | 2013-11-13 | 浙江电器开关有限公司 | Release of molded case circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103337422A (en) | 2013-10-02 |
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Address after: 325000 Wenzhou, Lucheng light industrial park, No. Jiang Road, No. 101 Patentee after: Five Electric Co., Ltd. Patentee after: Shanghai Huatong Electricity Co., Ltd. Address before: 325019, A1-03 light industrial park, Wenzhou, Zhejiang, Lucheng Patentee before: Zhejiang Electric Appliance and Switchgear Co., Ltd. Patentee before: Shanghai Huatong Electricity Co., Ltd. |