CN203445076U - Electromagnetic trip mechanism - Google Patents
Electromagnetic trip mechanism Download PDFInfo
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- CN203445076U CN203445076U CN201320493709.0U CN201320493709U CN203445076U CN 203445076 U CN203445076 U CN 203445076U CN 201320493709 U CN201320493709 U CN 201320493709U CN 203445076 U CN203445076 U CN 203445076U
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- armature
- yoke
- release mechanism
- electromagnetic release
- bearing pin
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Abstract
The utility model discloses an electromagnetic trip mechanism, which is mounted inside a pedestal (1) of a circuit breaker and comprises a magnet yoke (3) fixedly arranged inside the pedestal (1), an armature (2) rotatably matched with the magnetic yoke (3) through a pin (5), and reset springs (4) arranged between the magnetic yoke (3) and the armature (2) and employing the elastic restoring force to enable the armature (2) to return to an initial position. According to the utility model, by directly erecting the pin (5) on the pedestal (1), an armature support is eliminated; the structure is enabled to be simple and compact; and the production cost is saved. Moreover, by forming open slots or plug holes, which are matched with the pin (5), on the pedestal (1) of the circuit breaker, the armature (2) is guaranteed not to have rotation center offsetting problems during the rotation process, and the overall work reliability of the electromagnetic trip mechanism is improved.
Description
Technical field
The utility model relates to breaker technical field, particularly a kind of electromagnetic release mechanism of circuit breaker.
Background technology
The electromagnetic release mechanism of circuit breaker is as a kind of protective device, and when in circuit, short circuit current surpasses set point, electromagnetic release mechanism action, threads off operating mechanism, and circuit breaker trip, realizes the protection to circuit breaker place circuit and load equipment.
Traditional electromagnetic release mechanism mainly comprises support, armature, yoke, counter-force back-moving spring, busbar, wherein, busbar is fixedly mounted on the pedestal of circuit breaker together with yoke, and support is fixedly mounted in yoke, and armature is arranged on rotationally on support and with yoke and is used in conjunction with.As one piece of Chinese patent literature CN102779698A discloses a kind of electromagnetic release mechanism for low-voltage circuit breaker, it comprises support, rotate the armature be arranged on described support, be placed in yoke between support and armature, be used to armature that the back-moving spring of reseting elasticity is provided; Described support comprises two side and is connected to the connecting wall of two side, is equipped with a pivotable groove on each sidewall; Described armature comprises actuation plate, outstanding two pivot boss and the release link that is positioned at actuation plate top from edge, the actuation plate left and right sides; Each pivot boss of described armature is arranged in the corresponding pivotable groove on rack side wall, when in circuit, short circuit current surpasses set point, yoke attracts armature to overcome counter-force back-moving spring elastic force, around support, rotates, promotion operating mechanism is threaded off, and realizes the tripping operation of circuit breaker.But in the prior art, pivotable groove on rack side wall and the pivot boss of armature are by stamping forming, difference due to pressing direction, pivotable groove can be washed into square or circular, it is square that but the pivot boss of armature can only be washed into, therefore, when square pivot boss is rotated in the pivotable groove of square pivotable groove or circle, due to square corner angle, the frictional force of rotating is larger, like this, after long-time use, can the rotate phenomenon of off-centring of pivot boss and pivotable groove, cause more severe vibrations, thereby cause moving unreliable of tripping mechanism wink.
In order to solve the problems of the technologies described above; Chinese patent literature CN201364861Y discloses a kind of short-circuit protection of Thermomagnetic type overcurrent trip; described current-release device comprises pedestal, is located at overload protection arrangement and the short-circuit protection on pedestal respectively; and be located at the electric guide being shared by overload protection arrangement and short-circuit protection on pedestal; described short-circuit protection comprises armature, yoke, reaction spring, support and axle; the a pair of axis hole that described armature is offered by armature two ends and reaction spring be by rack-mount together with axle, and can rotate around the axis.It is rough that the fit system of the prior art by axle and hole solved in traditional tripping mechanism armature and yoke mating surface, the problem of meeting generative center skew in rotation process, but in use there is following problem in the prior art: 1, in the prior art, for the object to magnetic system protection, the use material of support can only be not magnetic copper material or not magnetic stainless steel material, copper material moulding is simple, but material is softer, easily distortion, armature in the course of the work can be because the distortion of support is rotated dumb, affect the normal use of tripping mechanism, stainless steel material is because elasticity own is better, therefore easy-formation not, difficulty of processing is large, and the stability after moulding is lower, therefore support adopts stainless steel material in use also can affect the reliability of tripping mechanism work, 2, in the prior art, tripping mechanism comprises numerous parts such as armature, yoke, reaction spring, support, axle, and structure is more complicated, takes up space larger in the time of in being installed on the pedestal of circuit breaker, is unfavorable for the compact design of circuit breaker integral body.
Utility model content
For this reason, the tripping mechanism complex structure, volume that technical problem to be solved in the utility model is to overcome prior art more greatly, the low problem of functional reliability in use, a kind of simple and compact for structure, electromagnetic release mechanism that functional reliability is high is provided.
For solving the problems of the technologies described above, the utility model is a kind of electromagnetic release mechanism, is arranged in the base of circuit breaker, and it comprises yoke, is fixedly installed in described base; Armature, coordinates with described yoke rotationally by a bearing pin; Back-moving spring, is located between described yoke and described armature, by its elastic restoring force, makes described armature return back to initial position; Described bearing pin is directly erected on described base.
Described base comprises base plate and the two side being formed by two opposite side edge bendings of described base plate, described in two, between sidewall, forming at least one and the spaced dividing plate of described parallel sidewalls, between described sidewall and adjacent described dividing plate or described in two, between dividing plate, forming and be suitable for the installation cavity that described electromagnetic release mechanism is installed.
At dividing plate symmetric position place described in described sidewall and adjacent described dividing plate symmetric position place or two, form respectively the open slot coordinating with the two ends clamping of described bearing pin.
At dividing plate symmetric position place described in described sidewall and adjacent described dividing plate symmetric position place or two, form respectively the spliced eye of pegging graft and coordinating with described bearing pin two ends.
Described armature comprises the adhesive plate of middle part moulding and the two bendings projections that form from described adhesive plate dual-side bending, the symmetric position of bending projection described in two respectively two of moulding be suitable for the pin-and-hole that described bearing pin passes.
Described armature also comprises armature adjustable wall hook structure, and for described back-moving spring one end hook, corresponding, described yoke comprises yoke adjustable wall hook structure, for described back-moving spring other end hook.
Described adhesive plate forms two symmetrical cantilever arms in the other direction along its radius of turn maximal margin, and described armature adjustable wall hook structure is at least two armature hook holes that are arranged side by side on described cantilever arm;
Described yoke adjustable wall hook structure is to take shape in yoke hook hole corresponding with described armature hook hole in described yoke.
Described base also comprises position limiting structure, after limiting described armature adhesive, is subject to the elastic restoring force of described back-moving spring to return back to initial position.
Described position limiting structure is the positive stop lug boss being arranged on described base plate, described positive stop lug boss is located at the initial position of described armature before adhesive, so that described armature is while returning back to initial position, the radius of turn maximal margin of described adhesive plate is stated positive stop lug boss against residence.
Technique scheme of the present utility model has the following advantages compared to existing technology:
1, in the utility model, armature coordinates with the yoke being fixed on circuit breaker base rotationally around bearing pin, by bearing pin is directly erected on base, saved the supporting structure of existing electromagnetic release mechanism, make electromagnetic release mechanism overall structure simply compact, production cost reduces, and, owing to having saved support, the insecure problem of tripping mechanism work causing due to deformation of timbering of having avoided that existing electromagnetic release mechanism occurs after long-time use, has improved electromagnetic release mechanism overall work reliability further.
2, in the utility model, wherein base comprises base plate, two side and at least one dividing plate is set between two side, by this kind of set-up mode, form at least two for the installation cavity of electromagnetic release mechanism is installed, electromagnetic release mechanism can be installed according to actual needs flexibly, and this kind of structure is convenient to bearing pin and set up.
3, in the utility model, by at sidewall and adjacent separator symmetric position place or the two dividing plate symmetric position places open slot that moulding coordinates with the clamping of bearing pin two ends respectively, bearing pin fixed card is connected on base, bearing pin can be rotated in base, and this kind of fixed card connecting structure is firmly firm, guaranteed the job stability of bearing pin.
4, in the utility model, by at sidewall and adjacent separator symmetric position place or the two dividing plate symmetric position places spliced eye that moulding coordinates with the grafting of bearing pin two ends respectively, bearing pin is fixed on base, this kind fixing mode of pegging graft is solid and reliable, and because the mating surface of bearing pin and pin-and-hole is smooth, after use, there will not be for a long time the problem of off-centring, further improved the functional reliability of bearing pin.
5, in the utility model, on base, be also provided with position limiting structure, for limiting armature, return back to the position after initial position, position limiting structure is directly arranged on base, further simplify the structure of electromagnetic release mechanism, be conducive to the installation of electromagnetic release mechanism.
6, in the utility model, wherein position limiting structure is the positive stop lug boss on moulding or the base plate that is fixed on base, and this kind of positive stop lug boss is simple in structure, and processing and installation are all very convenient, have further reduced production cost.
7, in the utility model, the adhesive plate of armature forms two symmetrical cantilever arms in the other direction along radius of turn maximal margin, on cantilever arm, be arranged side by side at least two armature hook holes, this kind of structure is arranged so that the length of back-moving spring between armature and yoke can regulate, can regulate as required the reseting elasticity of back-moving spring, thereby regulate electromagnetic force required while threading off, electromagnetic release mechanism of the present utility model be can be applicable in the circuit breaker of different Interruption requirements.
Accompanying drawing explanation
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the structural representation of described electromagnetic release mechanism of the present utility model;
Fig. 2 is circuit breaker base structural representation;
Fig. 3 is that described electromagnetic release mechanism of the present utility model is installed on the structural representation on circuit breaker base;
Fig. 4 is the structural representation of armature of the present utility model.
In figure, Reference numeral is expressed as: 1-base, 11-base plate, 12-sidewall, 13-dividing plate, 14-installation cavity, 15-open slot, 17-positive stop lug boss, 2-armature, 24-adhesive plate, 241-radius of turn maximal margin, 242-cantilever arm, 242a-the first hook hole, 25-bending projection, 26-catch bar, 3-yoke, 3a-the second hook hole, 4-back-moving spring, 5-bearing pin, 6-busbar, 7-bimetallic element.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
As shown in Figure 1, Figure 3, a kind of electromagnetic release mechanism of the present embodiment, be arranged in the base 1 of circuit breaker, it comprises yoke 3, the armature 2 coordinating with yoke 3 being fixedly installed in base 1 and is located at the back-moving spring 4 between described yoke 3 and described armature 2, and described armature 2 coordinates with described yoke 3 rotationally by a bearing pin 5.When in circuit, short circuit current surpasses set point, the close magnetic force of armature 2 described in described yoke 3 generation adhesives, the elastic force that described armature 2 overcomes described back-moving spring 4 under this magneticaction rotates around described bearing pin 5, and be with pneumatic operating mechanism to move, make the circuit breaker lock that breaks, after the disconnected lock of circuit breaker, between described armature 2 and described yoke 3, magnetic force disappears, and described armature 2 returns back to the initial position before rotation under the elastic restoring force effect of described back-moving spring 4.
In order to make tripping mechanism overall structure simply compact, the electromagnetic release mechanism of the present embodiment, saved in prior art conventionally for supporting the armature bracket structure of armature 2, and described bearing pin 5 has directly been erected on the base 1 of circuit breaker, reduced the production cost of electromagnetic release mechanism.The electromagnetic release mechanism of the present embodiment is mainly used in mold cased circuit breaker, but be not limited to mold cased circuit breaker, the base 1 of mold cased circuit breaker is generally by thermosetting material moulding, hardness is high, and base 1 wall thickness, and support of the prior art is considered the problem of magnetic protection and cost, conventionally be set to copper support or the stainless steel stent of thin-walled shape, copper material moulding is simple, but material is softer, easily produce distortion, thereby cause the dropout action of tripping mechanism unreliable, and stainless steel is due to good springiness own, so easy-formation not, cause processing cost to improve, and the less stable after moulding.The electromagnetic release mechanism of the present embodiment, by bearing pin 5 is directly erected on circuit breaker base 1, had both solved the harmful effect that deformation of timbering produces, and had improved the functional reliability of tripping mechanism, but also had reduced production cost.
As shown in Figure 1, the electromagnetic release mechanism of the present embodiment also comprises busbar 6, bimetal leaf 7, busbar 6 is fixedly connected with yoke 3, bimetal leaf 7 is fixedly connected with busbar 6, the mode of being fixedly connected with is preferably screw and connects, also can be fixedly connected with mode by other and connect, such as welding, grafting, key connection etc.
As shown in Figure 2, described base 1 comprises base plate 11 and the two side 12 being formed by 11 two opposite side edge bendings of described base plate, 12 of sidewalls described in two, form the dividing plate 13 that at least one and described sidewall 12 parallel interval arrange, in the present embodiment, be preferably two, but be not limited to two, two described sidewalls 12 are divided into three with two described dividing plates 13 that arrange therebetween and are suitable for the installation cavity 14 that described electromagnetic release mechanism is installed.
As shown in Figure 2, at described sidewall 12 and adjacent described dividing plate 13 symmetric position places, form the open slot 15 coordinating with described bearing pin 5 two ends clampings, two adjacent described dividing plate symmetric position places also form the open slot 15 coordinating with described bearing pin 5 two ends clampings, described open slot 15 is distributed in the symmetrical both sides of described installation cavity 14, described open slot 15 is preferably circular open groove 15, it is circular axle that described bearing pin 5 is preferably the cross section matching with described circular open groove, the shape of described open slot 15 is not done concrete restriction, for example, also can be shaped to square or up big and down small trapezoidal etc., it is square or trapezoidal etc. that the shape of corresponding described bearing pin 5 also can be set to, the bearing pin 5 of described circular cross section can fixed card be connected in described open slot 15, also can form sliding surface with described open slot 15 coordinates, relative to described open slot 15, rotate.
As Figure 1 and Figure 4, described armature 2 comprises the adhesive plate 24 of middle part moulding and the two bending projections 25 that form from the 24 dual-side bendings of described adhesive plate, the symmetric position of bending projection 25 described in two respectively two of moulding be suitable for the pin-and-hole 21 that described bearing pin 5 passes.Described armature 2 is erected on described bearing pin 5 by pin-and-hole 21.In the present embodiment, described adhesive plate 24 preferred structures are, comprise the flat part of bottom and the furcation on top, the structure material saving of the described furcation on top, production cost further reduces, described furcation and described flat part have certain angle, so that described flat part is suitable for coordinating with the auxiliary section, inclined-plane of moulding in described yoke 3.Certainly as the replaceable mode of adhesive plate 24, adhesive plate 24 also can be integrated slab construction, and processing is simple.
A kind of replaceable mode as described pin-and-hole 21, described adhesive plate 24 plate faces form the axle shape slotted hole to yoke one lateral process, described axle shape slotted hole is applicable to described bearing pin 5 and inserts, described armature 2 is erected on described bearing pin 5 by described axle shape slotted hole, this kind of structure makes described armature 2 rotations more steady, is conducive to improve tripping mechanism job stability.
In the present embodiment, in order to realize, short circuit drop-away current is regulated, thereby meet the requirement of different circuit breakers to drop-away current, described armature 2 also comprises armature adjustable wall hook structure, for described back-moving spring 4 one end hooks, accordingly, described yoke 3 comprises yoke adjustable wall hook structure, for described back-moving spring 4 other end hooks.By described armature adjustable wall hook structure and described yoke adjustable hook structure function, the tensile elongation of described back-moving spring 4 between described armature 2 and described yoke 3 carries out changing adjusting, and then the reseting elasticity of regulating spring, thereby regulate the required electromagnetic force of threading off.
Particularly, the moulding of described armature adjustable wall hook structure, two symmetrical cantilever arms 242 along described radius of turn maximal margin 241 moulding in the other direction by described adhesive plate 24, at least two armature hook hole 242a that are arranged side by side on described cantilever arm 242, described yoke adjustable wall hook structure is to take shape in yoke hook hole 3a corresponding with described armature hook hole 242a in described yoke 3.
Disposable, described yoke adjustable wall hook structure is at least two yoke hook hole 3a that take shape in described yoke 3, described armature adjustable wall hook structure is for taking shape in described in described armature two on cantilever arm 242, the armature hook hole 242a corresponding with described yoke hook hole 3a.
Disposable, described yoke adjustable wall hook structure and described armature adjustable wall hook structure can be at least one hook hole being arranged side by side, and described back-moving spring 4 is linked up with and is hooked on the adjusting of different hook place realizations to reseting elasticity by two ends.
On above basis, as shown in Figure 2 and Figure 3, the present embodiment also comprises for the initial position of armature 2 and reset are returned back to the position limiting structure that initial position limits.Described position limiting structure is preferably the positive stop lug boss 17 on the base plate 11 that is arranged on described base 1, described positive stop lug boss 17 is located at the initial position of described armature 24 before adhesive, so that described armature 2 is while returning back to initial position, the radius of turn maximal margin 241 of described adhesive plate 24 is stated positive stop lug boss 17 against residence.The structure of described positive stop lug boss 17 is not done concrete restriction, can be set to rectangular shape, can be set to cylindrical shape yet, as long as can realize its function.
A kind of interchangeable embodiment as embodiment 1, in the present embodiment, described sidewall 12 and described adjacent described dividing plate 13 symmetric position places form the spliced eye of pegging graft and coordinating with described bearing pin 5 two ends, described in two, dividing plate 13 symmetric position places also form respectively the spliced eye of pegging graft and coordinating with described bearing pin 5 two ends, described spliced eye is preferably circular port, accordingly, described bearing pin 5 is the circular shaft coordinating with it, the shape of described spliced eye is not done concrete restriction, can be shaped to square, triangle or polygon, accordingly, described bearing pin 5 is shaped to the shape matching with described spliced eye.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And among the protection range that the apparent variation of being extended out thus or change are still created in the utility model.
Claims (10)
1. an electromagnetic release mechanism, is arranged in the base (1) of circuit breaker, and it comprises
Yoke (3), is fixedly installed in described base (1);
Armature (2), coordinates with described yoke (3) rotationally by a bearing pin (5);
Back-moving spring (4), is located between described yoke (3) and described armature (2), by its elastic restoring force, makes described armature (2) return back to initial position;
It is characterized in that: described bearing pin (5) is directly erected on described base (1).
2. electromagnetic release mechanism according to claim 1, it is characterized in that: described base (1) comprises base plate (11) and by described (11) two two sides that the bending of opposite side edge forms of base plate (12), between sidewall described in two (12), form the dividing plate (13) that at least one and described sidewall (12) parallel interval arrange, between described sidewall (12) and adjacent described dividing plate (13) or described in two, between dividing plate (13), form the installation cavity (14) that is suitable for described electromagnetic release mechanism installation.
3. electromagnetic release mechanism according to claim 2, is characterized in that: at dividing plate (13) symmetric position place described in described sidewall (12) and adjacent described dividing plate (13) symmetric position place or two, form respectively the open slot (15) coordinating with described bearing pin (5) two ends clamping.
4. electromagnetic release mechanism according to claim 2, is characterized in that: at dividing plate (13) symmetric position place described in described sidewall (12) and adjacent described dividing plate (13) symmetric position place or two, form respectively the spliced eye of pegging graft and coordinating with described bearing pin (5) two ends.
5. according to the electromagnetic release mechanism described in any one in claim 2-4, it is characterized in that: described armature (2) comprises the adhesive plate (24) of middle part moulding and the two bendings projections (25) that form from described adhesive plate (24) dual-side bending, the symmetric position of bending projection (25) described in two respectively two of moulding be suitable for the pin-and-hole (21) that described bearing pin (5) passes.
6. electromagnetic release mechanism according to claim 5, it is characterized in that: described armature (2) also comprises armature adjustable wall hook structure, for described back-moving spring (4) one end hook, accordingly, described yoke (3) comprises yoke adjustable wall hook structure, for described back-moving spring (4) other end hook.
7. electromagnetic release mechanism according to claim 6, it is characterized in that: described adhesive plate (24) forms two symmetrical cantilever arms (242) in the other direction along its radius of turn maximal margin (241), and described armature adjustable wall hook structure is at least two the armature hook holes (242a) that are arranged side by side on described cantilever arm (242).
8. electromagnetic release mechanism according to claim 7, is characterized in that: described yoke adjustable wall hook structure is for taking shape in yoke hook hole (3a) corresponding with described armature hook hole (242a) in described yoke (3).
9. electromagnetic release mechanism according to claim 8, is characterized in that: described base (1) also comprises position limiting structure, after limiting described armature (2) adhesive, is subject to the elastic restoring force of described back-moving spring (4) to return back to initial position.
10. electromagnetic release mechanism according to claim 9, it is characterized in that: described position limiting structure is for being arranged on the positive stop lug boss (17) on described base plate (11), described positive stop lug boss (17) is located at the initial position of described armature (24) before adhesive, so that described armature (2) is while returning back to initial position, the radius of turn maximal margin (241) of described adhesive plate (24) is stated positive stop lug boss (17) against residence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320493709.0U CN203445076U (en) | 2013-08-13 | 2013-08-13 | Electromagnetic trip mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320493709.0U CN203445076U (en) | 2013-08-13 | 2013-08-13 | Electromagnetic trip mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN203445076U true CN203445076U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320493709.0U Expired - Lifetime CN203445076U (en) | 2013-08-13 | 2013-08-13 | Electromagnetic trip mechanism |
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| CN (1) | CN203445076U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107230597A (en) * | 2016-04-29 | 2017-10-03 | 上海良信电器股份有限公司 | A kind of miniature circuit breaker clapper-type instantaneous protection mechanism |
| CN108831805A (en) * | 2018-08-23 | 2018-11-16 | 无锡新宏泰电器科技股份有限公司 | A kind of breaker of plastic casing busbar radiator structure |
| CN109390190A (en) * | 2017-08-03 | 2019-02-26 | 乐星产电(无锡)有限公司 | Breaker |
| CN109390191A (en) * | 2017-08-03 | 2019-02-26 | 乐星产电(无锡)有限公司 | Breaker and its buckle releaser |
-
2013
- 2013-08-13 CN CN201320493709.0U patent/CN203445076U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107230597A (en) * | 2016-04-29 | 2017-10-03 | 上海良信电器股份有限公司 | A kind of miniature circuit breaker clapper-type instantaneous protection mechanism |
| CN109390190A (en) * | 2017-08-03 | 2019-02-26 | 乐星产电(无锡)有限公司 | Breaker |
| CN109390191A (en) * | 2017-08-03 | 2019-02-26 | 乐星产电(无锡)有限公司 | Breaker and its buckle releaser |
| CN108831805A (en) * | 2018-08-23 | 2018-11-16 | 无锡新宏泰电器科技股份有限公司 | A kind of breaker of plastic casing busbar radiator structure |
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Granted publication date: 20140219 |
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