CN201886993U - Overload protection adjusting device used for circuit breaker - Google Patents
Overload protection adjusting device used for circuit breaker Download PDFInfo
- Publication number
- CN201886993U CN201886993U CN2010206449172U CN201020644917U CN201886993U CN 201886993 U CN201886993 U CN 201886993U CN 2010206449172 U CN2010206449172 U CN 2010206449172U CN 201020644917 U CN201020644917 U CN 201020644917U CN 201886993 U CN201886993 U CN 201886993U
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- China
- Prior art keywords
- release
- circuit breaker
- boss
- overload protection
- draw bar
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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 - Lifetime
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Abstract
The utility model relates to an overload protection adjusting device used for a circuit breaker, which belongs to the technical field of a low-voltage apparatus, and comprises a release, a drag rod and an adjusting knob, wherein the release comprises an overload protection release and a short circuit protection release, and a first boss used for corresponding to the overload protection release, a second boss used for corresponding to the short circuit protection release and a fork part used for corresponding to the adjusting knob are formed on the drag rod. The utility model is characterized in that a groove parallel to the axis direction of the drag rod and a bending part forming the groove are formed on the second boss. The utility model has the advantages that the circuit breaker adopting a solenoid type release also has selectivity in thermal overload protection, and simultaneously has a short circuit protection function, the short circuit protection characteristic can not be affected even if the thermal overload is adjustable, and parts have simple structures, are convenient to install, and have stable and reliable acting characteristics.
Description
Technical field
The utility model belongs to the low voltage electrical apparatus technology field, is specifically related to a kind of overload protection adjusting device that is used for circuit-breaker.
Background technology
Circuit-breaker is applicable in the low voltage power distribution network, is used to distribute electric energy and protection circuit, power supply and power consumption equipment, and circuit breaker has overload, short circuit, under voltage protection function, and energy protection circuit and power-supply device are not damaged.
The overload protection adjusting device of circuit breaker is mainly by electromagnetic release, Thermomagnetic type release two classes.Traditional hot magnetic-type circuit breaker generally provides two kinds of protections; be thermal overload (long delay) protection and short-circuit protection; aspect short-circuit protection; helix tube type release more commonly at present; it can be in limited space; by changing the number of turns of coil, just can realize the protection of very little short circuit current, this is that other release such as clapper-type release do not possess.But the existing shortcoming of the circuit breaker existence of helix tube type release that adopts is: the long delay protection is for non-adjustable, and the family of applying is used inconvenient.
Summary of the invention
The purpose of this utility model is that a kind of overload protection adjusting device that is used for circuit breaker will be provided; it can realize that long delay is adjustable on the basis of the advantage of inheriting the little current protection of helix tube type release; do not influence the characteristic of short-circuit protection even long delay is adjustable yet; to adapt to the user scene circuit breaker is adjusted, be user-friendly to.
The purpose of this utility model reaches like this; a kind of overload protection adjusting device that is used for circuit breaker; comprise release; draw bar and adjusting knob; described release comprises overload protection release and short-circuit protection release; be formed with on the described draw bar and be used for corresponding first boss of overload protection release and be used for corresponding second boss of short-circuit protection release and be used for and the corresponding forked portion of adjusting knob, it is characterized in that: be formed with the groove parallel and the bending part of formation groove on described second boss with the draw bar axis direction.
In a specific embodiment of the present utility model, be formed with an inclined-plane on the described bending part.
In another specific embodiment of the present utility model, described groove is formed with channel opening on bending part.
In another specific embodiment of the present utility model, described boss is made of first, second cascaded surface and the inclined-plane between first, second cascaded surface.
In also specific embodiment of the present utility model, also be formed with on the described draw bar and be used for the dropout boss that matches with circuit breaker operation mechanism.
The utility model is owing to adopt the beneficial effect that has behind the said structure: make and adopt the circuit breaker of helix tube type release also to have controllability in thermal overload (long delay) protection; has simultaneously short-circuit protection function again; can not influence the short-circuit protection characteristic even thermal overload is adjustable yet; and design of part is simple; easy for installation, operating characteristics is stable, reliable.
Description of drawings
Fig. 1 is the perspective view of draw bar of the present utility model.
Fig. 2 is the perspective view of the other direction of draw bar among Fig. 1.
Fig. 3 is installed to the stereochemical structure exploded view that the circuit breaker pedestal gets on for draw bar of the present utility model.
Fig. 4 is installed on structure chart on the circuit breaker pedestal for the utility model.
Fig. 5 is installed on partial structurtes figure on the circuit breaker pedestal for the utility model.
Fig. 6 is installed on another partial structurtes figure on the circuit breaker pedestal for the utility model.
Embodiment
For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but to the description of embodiment all is not restriction to technical solutions of the utility model, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.
See also Fig. 1 and in conjunction with Fig. 2; a kind of overload protection adjusting device that is used for circuit breaker; comprise release 1, draw bar 2 and adjusting knob 3; described release 1 comprises overload protection release 11 and short-circuit protection release 12, is formed with on the described draw bar 2 to be used for overload protection release 11 corresponding first boss 21, to be used for and short-circuit protection release 12 corresponding second boss 22, the dropout boss 24 that is used for adjusting knob 3 corresponding forked portion 23 and is used for matching with circuit breaker operation mechanism.Wherein: the spacing L (shown in Figure 1) between the quantity of first boss 21 and second boss 22 and adjacent two boss can adjust with the form (three utmost points or four utmost points) and the size of circuit breaker.Described first boss 21 is made of first, second cascaded surface 211,212 and the inclined-plane 213 between first, second cascaded surface 211,212.The bending part 222 that is formed with a groove 221 parallel on described second boss 22 and constitutes groove 221 with draw bar 2 axis directions, described groove 221 is formed with channel opening 2211 on bending part 222, described bending part 222 is formed with an inclined-plane 2221 in the lower inside near groove 221.Described forked portion 23 is between two adjacent second boss 22, described dropout boss 24 is between other two adjacent second boss 22, on described dropout boss 24, offer a hole 241, offer first cavity 25 at the back side of described forked portion 23, offer second pocket 26 at the back side of described dropout boss 24.
See also Fig. 3 and in conjunction with Fig. 4, described draw bar 2 is installed on first, second strutting piece 51,52 of circuit breaker pedestal 5 by pivot pin 4, specifically: pivot pin 4 is located in first, second cavity 25,26 of draw bar 2 and passes hole 511,521 on first, second strutting piece 51,52, makes draw bar 2 rotate and can move axially on bearing pin 4 around bearing pin 4.One end of the spring 6 that draw bar 2 resets is installed in the hole 241 of dropout boss 24, and the other end of spring 6 is installed in the hole 512 of first strutting piece 51, when draw bar 2 rotate trigger breaker open operations after, spring 6 provides an automatically reset power.Release 1 is installed on the circuit breaker pedestal 5, and the armature 121 on the short-circuit protection release 12 of release 1 can enter into the appropriate location of groove 221 by the notch 2211 of the groove 221 on second boss 22.
Adjusting knob 3 with regulatory function is installed in the forked portion 23 of draw bar 2 by the card base on it 31; when rotation adjusting knob 3; because the effect of the card base 31 of adjusting knob 3; the forked portion 23 that drives draw bar 2 is moved together; can drive thus draw bar 2 along pivot pin 4 axially do displacement, thereby realize alternative to overload protection.Wherein: the condition that the length of described groove 221 need satisfy is can hold because the draw bar 2 that adjusting knob 3 adjustings cause at axial displacement, does not make the armature 121 of short-circuit protection release 12 interfere to good with groove 221.When rotation during adjusting knob 3, the groove 221 relative armature 121 of draw bar 2 are done displacement like this, though armature 121 at the diverse location of groove 221, the motion of drive draw bar 2 can not be affected yet during armature 121 adhesives.
See also Fig. 4 and in conjunction with Fig. 5; when having overload current I in the circuit that circuit breaker is housed; after sensing element 111 (bimetallic element) sense of the overload protection release 11 of release 1 discerns overload current; will bend towards the motion of draw bar 2; run on first boss 21 of draw bar 2 pairing first when being installed in adjustment screw 112 on the sensing element 111; second cascaded surface 211; 212 or during inclined-plane 213; draw bar 2 will rotate; dropout boss 24 on draw bar 2 triggers the operating mechanism (not shown) of circuit breaker; the operating mechanism release, breaker open operation.Wherein first, second cascaded surface 21,22 and inclined-plane 213 are to determine according to concrete current specification, also can adopt lozenges to replace cascaded surface to realize.
See also Fig. 4 and in conjunction with Fig. 6, when having short circuit current I in the circuit, when the sensing coil sense in the release 1 discerns electric current and exceeds predetermined setting value, armature 121 just moves downward, when the end 1211 of armature 121 moves to the kink 222 of second boss 22 of draw bar 2, driving draw bar 2 rotates, in driving draw bar 2 rotating process, owing to formed an inclined-plane 2221 on the bending part 222 of second boss 22, therefore the lower end of bending part 222 can not interfered with armature 121 all the time, to guarantee the reliability of draw bar 2 actions.Move to the operating mechanism that dropout boss 24 triggers circuit breaker, the release of operating mechanism snap close, breaker open operation up to draw bar 2.
Claims (5)
1. overload protection adjusting device that is used for circuit breaker; comprise release (1); draw bar (2) and adjusting knob (3); described release (1) comprises overload protection release (11) and short-circuit protection release (12); be formed with on the described draw bar (2) and be used for corresponding first boss of overload protection release (11) (21) and be used for corresponding second boss of short-circuit protection release (12) (22) and be used for and the corresponding forked portion of adjusting knob (3) (23), it is characterized in that: be formed with groove (221) parallel and the bending part (222) that constitutes groove (221) on described second boss (22) with draw bar (2) axis direction.
2. a kind of overload protection adjusting device that is used for circuit breaker according to claim 1 is characterized in that being formed with on the described bending part (222) inclined-plane (2221).
3. a kind of overload protection adjusting device that is used for circuit breaker according to claim 1 is characterized in that described groove (221) is formed with channel opening (2211) on bending part (222).
4. a kind of overload protection adjusting device that is used for circuit breaker according to claim 1 is characterized in that described boss (21) is made of first, second cascaded surface (211,212) and the inclined-plane (213) that is positioned between first, second cascaded surface (211,212).
5. a kind of overload protection adjusting device that is used for circuit breaker according to claim 1 is characterized in that also being formed with on the described draw bar (2) and is used for the dropout boss (24) that matches with circuit breaker operation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206449172U CN201886993U (en) | 2010-12-03 | 2010-12-03 | Overload protection adjusting device used for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206449172U CN201886993U (en) | 2010-12-03 | 2010-12-03 | Overload protection adjusting device used for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201886993U true CN201886993U (en) | 2011-06-29 |
Family
ID=44184542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206449172U Expired - Lifetime CN201886993U (en) | 2010-12-03 | 2010-12-03 | Overload protection adjusting device used for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201886993U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568961A (en) * | 2011-12-15 | 2012-07-11 | 常熟开关制造有限公司(原常熟开关厂） | Tripping traction device for circuit breaker |
| CN102810436A (en) * | 2012-08-21 | 2012-12-05 | 德力西电气有限公司 | Delay-adjustable breaker |
| CN103474303A (en) * | 2013-08-13 | 2013-12-25 | 德力西电气有限公司 | Molded case circuit breaker with hinged draw bar |
| CN105810525A (en) * | 2016-04-21 | 2016-07-27 | 首瑞（天津）电气设备有限公司 | Device for adjusting idle stroke of release |
-
2010
- 2010-12-03 CN CN2010206449172U patent/CN201886993U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568961A (en) * | 2011-12-15 | 2012-07-11 | 常熟开关制造有限公司(原常熟开关厂） | Tripping traction device for circuit breaker |
| CN102568961B (en) * | 2011-12-15 | 2014-02-26 | 常熟开关制造有限公司(原常熟开关厂） | Tripping traction device for circuit breaker |
| CN102810436A (en) * | 2012-08-21 | 2012-12-05 | 德力西电气有限公司 | Delay-adjustable breaker |
| CN103474303A (en) * | 2013-08-13 | 2013-12-25 | 德力西电气有限公司 | Molded case circuit breaker with hinged draw bar |
| CN103474303B (en) * | 2013-08-13 | 2015-12-16 | 德力西电气有限公司 | A kind of breaker of plastic casing with hinge-type draw bar |
| CN105810525A (en) * | 2016-04-21 | 2016-07-27 | 首瑞（天津）电气设备有限公司 | Device for adjusting idle stroke of release |
| CN105810525B (en) * | 2016-04-21 | 2018-06-08 | 首瑞（天津）电气设备有限公司 | Buckle releaser idle running regulating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |