CN105336553A - Releasing mechanism and leakage protector - Google Patents
Releasing mechanism and leakage protector Download PDFInfo
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- CN105336553A CN105336553A CN201410265866.5A CN201410265866A CN105336553A CN 105336553 A CN105336553 A CN 105336553A CN 201410265866 A CN201410265866 A CN 201410265866A CN 105336553 A CN105336553 A CN 105336553A
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- pin
- tripping mechanism
- magnetic conductive
- magnetic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
Abstract
The embodiment of the disclosure relates to a releasing mechanism comprising a magnetic conductive framework (1), a pin (2), a magnetic conductive plate (3), a bias mechanism (5), and a coil (6). The magnetic conductive framework (1) has two support legs (11, 12) and a middle part (13) connecting the two support legs (11, 12). The pin (2) that can be moved axially is arranged between the two support legs (11, 12). The magnetic conductive plate (3) is coupled to free ends of the two support legs (11, 12). The bias mechanism (5) is used for providing an acting force for the pin (2). The coil (6) encircles the pin (2) and is located between the two support legs (11, 12) of the magnetic conductive framework (1). In addition, the invention also provides a leakage protector. According to the releasing mechanism and the leakage protector, the manufacturing cost is reduced; qualities of products are reliable during batch production; the releasing power is reduced; and easy adjustment can be realized.
Description
Technical field
Each execution mode of the present disclosure relates to earth leakage protective device field, particularly relate in earth leakage protective device tripping mechanism.
Background technology
Earth leakage protective device is a kind of safety device, and it is for disconnecting operating circuit when equipment generation leak current fault, with proterctive equipment and personal safety.Earth leakage protective device monitoring electric leakage signal.After electric leakage size reaches dropout threshold values.Inner tripping mechanism action, trigger switch mechanism action, thus turn off operating current, realize creepage protection function.Energy required for tripping mechanism action, what have comes from major loop, and what have comes from the energy that electric capacity in circuit stores, have directly come and in the energy of leakage current.In electric leakage product design, under like products performance, the power that tripping mechanism action needs is the smaller the better.
Tripping mechanism in earth leakage protective device is the vitals realizing earth leakage protective device reaction.The tripping mechanism of existing a kind of earth leakage protective device is arranged in closed tubular shell; it forms this tubular shell by Sheet Metal Forming Technology; and remaining parts being loaded after in this housing, again make secure fit between this tubular shell and inner body by extruding, locate to make inner body.Because Sheet Metal Forming Technology easily causes housing to ftracture, the percent defective of this manufacturing process is high, thus causes manufacturing cost higher.And this tripping mechanism uses one piece of annular permanent magnet to provide locking magnetic force for the motor element in tripping mechanism usually.This annular permanent magnet is difficult to process the cost increase thus also causing tripping mechanism usually.
The tripping mechanism of the type, when there is electric leakage, coil is wherein charged, thus produces one and the reverse magnetic field of permanent magnet wherein, to offset the magnetic field of part permanent magnet, permanent magnet is reduced to the suction of motor element.When suction is less than the restoring force of spring, spring promotes motor element action and realizes tripping mechanism action.
Under the prerequisite of same line loop current, the magnetic field size that coil produces is relevant with the number of turn of coil and the magnetic resistance of surrounding magnetic loop.During design, for increasing the magnetic field that coil current produces, coil turn can be increased.But the increase of coil turn, can increase coil impedance, thus dropout power is made to increase.In addition, the tripping mechanism of above-mentioned tubular shell structure due to its cross section be circular, its radial dimension can not design and too muchly hinder installation to avoid causing excessive overall dimensions, therefore the too much coil of the number of turn can not be set for this tripping mechanism, thus the induced field causing it to produce is limited.
And, the precision coordinated due to extruding is not high, the contact possibility defective tightness of circular arc housing wall and conducting parts wherein, thus when causing its each part forming magnetic conductive loop to coordinate, there is larger gas gap, thus making that there is in magnetic loop larger magnetic resistance, this also will weaken the induced field intensity caused by the electric current in coil.
When above-mentioned two factors all cause producing respective electromagnetic field (EMF), need larger electric current, thus make this tripping mechanism need larger dropout power.Therefore, the tripping mechanism possibility of above-mentioned prior art cannot reliably for needing the workplace that tripping mechanism dropout power is very little.
On the other hand, earth leakage protective product, when designing, needs the tripping mechanism of different dropout power.And owing to using one piece of annular permanent magnet in aforementioned tripping mechanism of the prior art, its Distribution of Magnetic Field relative to motor element is difficult to regulate, the tripping mechanism to different sensitivity requires therefore is needed to design different permanent magnets and its different mounting structure.This makes the flexibility of the tripping mechanism manufacturing different sensitivity reduce and cause cost increase.
Therefore, people wish that tripping mechanism adopts conventional hardware, and be easy to manufacture, assembly technology is simple, thus reduces the manufacturing cost of tripping mechanism.Wish to reduce the size of tripping mechanism, the earth leakage protective product that size more simplifies can be developed, to be installed in the more confined space simultaneously.Also wish the tripping mechanism that operating current is less, dropout power is less, thus lower for developing operating voltage, and highly sensitive earth leakage protective product provides possibility.Meanwhile, also wish that the structure of tripping mechanism is more simple, quality is easy to control, thus when producing in enormous quantities, the dropout power stability of the tripping mechanism of production.
Summary of the invention
In view of the foregoing, embodiment of the present disclosure provides a kind of tripping mechanism and earth leakage protective device, and it is for solving problem existing in above-mentioned existing tripping mechanism at least partially.
According to one side of the present disclosure, provide a kind of tripping mechanism, comprising: magnetic conduction framework, it has two supporting legs and the mid portion being connected described two supporting legs, and described mid portion has pin-and-hole; Pin, axially movably can be arranged between described two supporting legs and also pass described pin-and-hole, has near the first end of described pin-and-hole and the second end away from described pin-and-hole; Magnetic conductive board, is coupled to the free end of described two supporting legs; Bias mechanism, for providing the active force along first direction to described pin, wherein said first direction along described pin axially from described second end of described pin towards described first end; And coil, they are around described pin and between described two supporting legs of described magnetic conduction framework.The framework of tripping mechanism of the present disclosure can be shaped by means of only by strip or flaky material bending, and its raw material manufacture and moulding process is all very simple and percent defective is low, thus reduce manufacturing cost.And the oversized dimensions that open framework is suitable for holding larger coil and at least can not causes tripping mechanism at open sides.
According to another aspect of the present disclosure, this tripping mechanism also comprises coil brace, and magnetic conduction framework and magnetic conductive board are all arranged on coil brace.
According to another aspect of the present disclosure, each free end in two supporting legs of magnetic conduction framework has by two the resilient engagement portions limited that slot, the base of coil brace has a pair installing hole, deform in the other resilient engagement to installing hole of two engagement portion of each free end in two supporting legs of magnetic conduction framework, make the free end of two of magnetic conduction framework supporting legs and the magnetic conductive board be arranged on coil brace combine closely thus.This mounting means makes the gap between the magnetic conduction framework of formation magnetic conductive loop and magnetic conductive board very little, thus significantly reduce the magnetic resistance of magnetic conductive loop, make can produce larger induced field in the electric current lower coil of formed objects, thus improve reliability and the sensitivity of tripping mechanism action.
According to another aspect of the present disclosure, magnetic conductive board is positioned in the magnetic conductive board mounting groove on the base of coil brace, magnetic conductive board forms the stage portion of narrowed width respectively at two ends, stage portion stretches in installing hole, thus two the resilient engagement portion clamping stage portion be coupled in each installing hole, to realize the free end of two supporting legs of magnetic conduction framework and combining closely of the magnetic conductive board be arranged on coil brace.In this way, magnetic conduction framework and magnetic conductive board realize combining closely and have less gas gap, thus reduce the magnetic resistance of joint, and increase induced field, make the action of tripping mechanism more reliable, and make tripping mechanism have less dropout power.Also can by the various known mode that is fastenedly connected by the free end of magnetic conduction framework together with magnetic conductive board compact siro spinning technology, such as buckle connects, is threaded.
According to another aspect of the present disclosure, coil brace has the frame support of the mid portion for fixing magnetic conduction framework.
According to another aspect of the present disclosure, this tripping mechanism also comprises the permanent magnet being coupled to magnetic conductive board, and permanent magnet is at least two permanent magnets distributed about the axisymmetrical of pin.Permanent magnet is the Common Shape such as cuboid, square.This makes the manufacture of permanent magnet become simple, thus reduces costs.The magnetic attraction that the permanent magnet be arranged symmetrically with makes pin be subject to only along its axial direction, thus avoids run-off the straight.
According to another aspect of the present disclosure, permanent magnet is positioned in the permanent magnet mounting groove on the base of coil brace.
According to another aspect of the present disclosure, in the permanent magnet mounting groove of coil brace, be also provided with sept, to regulate permanent magnet relative to the distance of the axis of pin.This makes it possible to the position by adjusting between permanent magnet and obtains different Distribution of Magnetic Field to adapt to different sensitivity requirement, makes the Design and manufacture of the tripping mechanism of different size more flexible and efficient, thus reduces costs further.
Because the part in tripping mechanism of the present disclosure is all located by coordinating with coil brace, and coil brace can by mode Accurate Shaping such as mould moldings, therefore, the manufacture of tripping mechanism of the present disclosure and assembly precision higher relative to the precision of drawing of the prior art and cooperation.Therefore, the gap between each part of formation magnetic conductive loop will be less, thus cause the magnetic resistance of magnetic conductive loop less.Thus tripping mechanism of the present disclosure can reach higher reliability and less dropout power.And owing to manufacturing and assembly precision raising, when producing in enormous quantities, the quality of this tripping mechanism is easier to control, and its dropout power will be more stable.
According to another aspect of the present disclosure, magnetic conduction framework, pin and magnetic conductive board are stainless steel, to realize good magnetic property.Magnetic conduction framework, pin and magnetic conductive board also can be other permeability magnetic material materials.
According to another aspect of the present disclosure; a kind of earth leakage protective device is provided; comprise the tripping mechanism of switching mechanism and aforesaid any one; wherein the coil of tripping mechanism is electrically connected to the operating circuit that earth leakage protective device connects; tripping mechanism coordinates with switching mechanism to make when occurring to leak electricity, coil electricity with trigger switch mechanism action to cut off operating circuit.
Accompanying drawing explanation
When reading the detailed description hereafter to exemplary embodiment by reference to the accompanying drawings, these and other object, feature and advantage will become apparent, in the accompanying drawings:
Fig. 1 is the cutaway view of the tripping mechanism according to an execution mode of the present disclosure;
Fig. 2 is the decomposition view of the tripping mechanism according to an execution mode of the present disclosure;
Fig. 3 is the stereogram of the tripping mechanism according to an execution mode of the present disclosure;
Fig. 4 is the cutaway view of the coil brace of tripping mechanism according to an execution mode of the present disclosure;
Fig. 5 is the stereogram of the tripping mechanism according to an execution mode of the present disclosure, wherein eliminates coil and coil brace;
Fig. 6 shows the magnetic loop of the tripping mechanism according to an execution mode of the present disclosure;
Fig. 7 A shows the tripping mechanism according to an execution mode of the present disclosure being in latched position;
Fig. 7 B shows the tripping mechanism according to an execution mode of the present disclosure being in trip positions;
Fig. 8 A-8B shows the tripping mechanism according to another execution mode of the present disclosure, and wherein in fig. 8 a, tripping mechanism is in latched position, and in the fig. 8b, tripping mechanism is in trip positions.
Embodiment
To describe various execution mode of the present disclosure in detail by means of only exemplary approach now.
With reference to figure 1-3, it illustrates the tripping mechanism according to an execution mode of the present disclosure.This tripping mechanism comprises: magnetic conduction framework 1, and it has two supporting legs 11,12 and the mid portion 13 being connected described two supporting legs 11,12, is preferably formed the magnetic conduction framework 1 of U-shaped.The mid portion 13 of magnetic conduction framework 1 has pin-and-hole 14.This framework 1 can be easily formed by bending strip material.
This tripping mechanism also comprises coil brace 7, and this coil brace 7 comprises base 71, frame support 72 and is connected the coil support portion 73 of base 71 and frame support 72.The mid portion 13 of magnetic conduction framework 1 is supported by this frame support 72, and two supporting legs 11,12 end of magnetic conduction framework 1 is then fixed to the base 71 of coil brace 7.
This tripping mechanism also comprises pin 2, and it can axially movably be arranged on also through pin-and-hole 24 between two supporting legs 11,12, and has near the first end 21 of described pin-and-hole 14 and the second end 22 away from described pin-and-hole 14.This pin 2 be also arranged in run through whole coil brace 7 and formed through hole 75 (see Fig. 4) and can move axially at this through hole 75.The guided rings 8 of such as plastics can be provided to support and guide finger 2.Pin 2 is axially arranged with a spring 5 along it.This spring 5 one end is fixed to be fixedly connected with relative to pin 2 in the draw-in groove on pin 2, and the other end abuts to the end face of the through hole 75 in coil brace 7.This spring 5 is as bias mechanism for providing the active force along first direction to pin 2, wherein this first direction is along axial second end 22 from pin 2 of pin 2 towards first end 21.
This tripping mechanism also comprises coil 6, and they are around pin 2 and between two supporting legs 11,12 of magnetic conduction framework 1.Particularly, the coil support portion 73 that this coil 6 is wrapped in coil brace 7 is peripheral, produces induced field for when passing into electric current.
This tripping mechanism also comprises magnetic conductive board 3, and it is coupled to the free end of two supporting legs 11,12 of framework, forms magnetic conductive loop to be combined with magnetic conduction framework.See Fig. 1 and 4, magnetic conductive board 3 is coupled in the magnetic conductive board mounting groove on the base 71 of coil brace 7, accurately to locate securely relative to coil brace 7.
See Fig. 5, according in an execution mode of the present disclosure, each free end in two supporting legs 11,12 of magnetic conduction framework 1 has two the resilient engagement portions 16 limited by fluting 15, and this resilient engagement portion 16 is owing to having less sectional dimension and larger length and having certain elasticity.The base 71 of coil brace 7 has a pair installing hole 74.Two resilient engagement portions 16 difference resilient engagement of each free end in two supporting legs 11,12 of magnetic conduction framework 1 are in installing hole 74.The size of this installing hole 74 is set to its width in the orientation along two resilient engagement portions 16 on every bar supporting leg 11 or 12 and is slightly less than or just equals the width of supporting leg in this direction, thus when the resilient engagement portion 16 of supporting leg end is inserted installing hole 74, two spaced resilient engagement portions 16 that installing hole 74 can extrude every bar supporting leg end occur bending and deformation relative to each other, thus the elasticity realized between supporting leg 11 and 12 and the base 71 of coil brace 7 extrudes and coordinates.
Magnetic conductive board 3 forms the stage portion 31 of narrowed width respectively at two ends, stage portion 31 stretches into (see accompanying drawing 1-2) in installing hole 74.When the resilient engagement portion 16 of supporting leg 11 or 12 end is inserted installing hole 74, in the fluting 15 between the stage portion 31 of every side two resilient engagement portions 16 just in time in patchhole 74, this is clearly shown that in Figure 5.Therefore, when two resilient engagement portions 16 in installing hole 74 extruded hole are bending toward each other, this resilient engagement portion 16 will be forced to the stage portion 31 clamped therebetween, thus combining closely between the free end realizing two supporting legs 11,12 of magnetic conduction framework 1 and the magnetic conductive board 3 being arranged on coil brace 7.This combines closely for the magnetic loop forming drive pin 2 action is favourable, and this will introduce below.
In one embodiment, this tripping mechanism also comprises the permanent magnet 4 being coupled to magnetic conductive board 3.Permanent magnet 4 preferably about at least two permanent magnets that the axisymmetrical of pin 2 distributes, to provide the magnetic field of the axisymmetrical about pin 2, tilts to avoid pin 2 to be subject to the magnetic influence in other directions except axis direction.In the execution mode shown in Fig. 1-5, this permanent magnet 4 is two pieces of permanent magnets of identical material, size and shape, is arranged in the both sides of pin 2 its axisymmetrical about pin 2.Should be appreciated that the permanent magnet 4 that other quantity also can be set, such as three pieces or four pieces.These two permanent magnets 4 to be arranged in the permanent magnet mounting groove on the base 71 of coil brace 7 (see accompanying drawing 1 and 4) to locate relative to coil brace 7 and pin 2.And these two permanent magnets 4 are directly coupled to magnetic conductive board 3 by magnetic-adsorption or by the mode such as gluing, with by the introduction by magnetic field of permanent magnet 4 on magnetic conductive board 3.Should be appreciated that this permanent magnet 4 can be coupled to the either side of magnetic conductive board 3.Due to permanent magnet 4 is set to the multiple of split, make the simple shape of each permanent magnet and be convenient to manufacture, and easily obtain different Distribution of Magnetic Field by the position between adjustment permanent magnet, this makes the Design and manufacture of the tripping mechanism of different size more flexible and efficient, thus reduces costs further.
In order to realize magnetic conduction and produce magnetic force, magnetic conduction framework 1, pin 2 and magnetic conductive board 3 are all made up of excellent permeability magnetic material, are preferably stainless steel.
The magnetic loop formed by permanent magnet and hot-wire coil in the tripping mechanism of above-mentioned execution mode has been shown in Fig. 6.The magnetic field produced by permanent magnet 4 is directed to the middle position be positioned at immediately below pin 2 of magnetic conductive board 3 via magnetic conductive board 3.Because two permanent magnets 4 arrange about the axial symmetry of pin 2, the magnetic field that two permanent magnets 4 are transmitted to the position immediately below pin 2 superposes on the axial direction along pin 2, and thus the magnetic direction produced due to the two on the axial direction perpendicular to pin 2 cancels out each other on the contrary.Under the effect in the superposition magnetic field vertically that two permanent magnets 4 produce, pin 2 is magnetized to produce and the magnetic field superposing magnetic field equidirectional, thus is attracted by the magnetic force on magnetic conductive board 3.On the other hand, the magnetic field produced by hot-wire coil 6 will be formed in the magnetic conductive loop that is made up of each supporting leg 11 or 12 of magnetic conduction framework 1, magnetic conductive board 3 and pin 2, axially contrary with the superposition magnetic direction of the axis produced by permanent magnet 4 at pin 2 of this magnetic direction, thus the superposition magnetic field of axis that produced by permanent magnet 4 of partial offset, thus the total magnetic field after this counteracting will reduce the magnetic attraction of pin 2.Due to combining closely between each supporting leg 11 or 12 of magnetic conduction framework 1 and magnetic conductive board 3, only has less gas gap therebetween, therefore, less at the magnetic resistance of joint place in the two magnetic conductive loop formed, due to less magnetic resistance, so under same current size and coil turn, coil can provide larger induced field.Comparatively speaking, this can reduce the dropout power of this tripping mechanism.In addition, because the structure of magnetic conduction framework 1 and coil brace 7 is suitable for accurate manufacture, and magnetic conduction framework 1 can relative to coil brace 7 accurately location and installation, therefore the pin-and-hole 14 on magnetic conduction framework 1 and the gap between pin 2 also can accurately be controlled, make this gap can be little as much as possible when not hindering the motion of pin 2, thus reduce the same magnetic resistance formed between the magnetic conduction framework 1 of magnetic conductive loop and pin 2, and then the induced field making coil can provide larger.
The operation principle of this tripping mechanism is introduced below in conjunction with accompanying drawing 7A-7B.In normal state, when there is not electric leakage in operating circuit, do not have electric current to flow through in coil 6 (not shown in Fig. 7 A-7B), thus do not produce induced field yet.Pin 2 magnetic is attached on magnetic conductive board 3 by the magnetic field only having permanent magnet 4 to produce.Now, one end being fixed to pin 2 of spring 5 is driven by pin 2 and is positioned at lower position, thus spring 5 is compressed.Although provided vertically from the second end 22 of pin 2 towards the spring-return power (namely contrary with magnetic attraction direction power) in the direction of first end 21 by the spring 5 that compresses to pin 2, but due to permanent magnet 4 to the magnetic attraction of pin 2 slightly larger than this spring-return power, pin 2 will still remain on the latched position (as shown in Figure 7 A) be adsorbed onto on magnetic conductive board 3.Now, tripping mechanism is failure to actuate, operating circuit normal ON.
When there is electric leakage in operating circuit, electric leakage being detected by detection of electrical leakage mechanism and by the wire loop of controller wire tripping mechanism, making coil 6 charged.Owing to having electric current to pass through in coil 6, in the magnetic conductive loop be made up of each supporting leg 11 or 12 of magnetic conduction framework 1, magnetic conductive board 3 and pin 2 around coil 6, induced field will be produced.This induced field is contrary by the magnetized magnetic direction of permanent magnet 4 institute at the direction of the axial location of pin 2 and pin 2, thus this induced field by partial offset pin 2 by the magnetized magnetic field of permanent magnet 4.The magnetic attraction making magnetic conductive board 3 to pin 2 is reduced to and is less than the spring-return power of spring 5 to pin 2 by the magnetic field after being cancelled.Now, pin 2 moves under the effect of spring-return power towards first direction, makes the first end 21 of pin 2 stretch out longer distance outside framework 1, thus triggers the switch mechanism movement coordinated with this tripping mechanism, to turn off the operating circuit of this generation electric leakage.
As can be seen from above-mentioned introduction, because the coil turn that is limited and tripping mechanism of the size of electric current in coil is limited, the size of the induced field produced is also very limited, and it only can be used for balancing out permanent magnet 4 makes spring-return power become the magnetic attraction of pin 2 slightly larger than the part of spring-return power to be greater than magnetic attraction.Due to the closely reliable juncture between the magnetic conduction framework 1 in embodiment of the present disclosure and magnetic conductive board 3, and the accurate clearance control between each part of formation magnetic conductive loop, cause gas gap less in whole magnetic conductive loop, thus avoid and produce large magnetic resistance therebetween, thus can ensure to produce maximum induced field with same coil current, to ensure the action reliably triggering pin 2 when there is electric leakage.And the magnetic loop due to this structure has less magnetic resistance, this tripping mechanism needs less dropout power.The better earth leakage protective product of performance can be designed.On the other hand, because magnetic conduction framework 1 is open architecture, it only surrounds coil 6 in a direction, therefore, even if the number of turn of coil 6 is increased, make coil 6 become large, this tripping mechanism also can not be made too to increase (because not having the thickness of framework or shell at open sides) in the size of the open sides not having framework 1.Like this, for tripping mechanism, larger coil can be set to improve sensitivity or reliability, still ensure that its size is suitable for installing simultaneously.
In addition, the framework 1 of tripping mechanism of the present disclosure can be shaped by means of only by strip or flaky material bending, and its technique is simple and percent defective is low, thus reduces manufacturing cost.
In addition, because the part in tripping mechanism of the present disclosure is all located by coordinating with coil brace 7, and coil brace 7 can by mode Accurate Shaping such as moulds, therefore, the manufacture of tripping mechanism of the present disclosure and assembly precision higher relative to the precision of drawing of the prior art and cooperation, thus tripping mechanism of the present disclosure can reach higher reliability and be suitable for higher sensitivity when producing in enormous quantities.And the assembling mode of each part of being located in tripping mechanism by coil brace 7 also makes the assembling of this tripping mechanism very simple and reliable.During assembling, only each part need to be navigated on coil brace 7 on corresponding location notch, hole or support portion, then by being clamped on by the free end of framework 1 in the installing hole 74 on coil brace 7, by all parts relative to coil brace 7 stationary positioned, thus assembling can be completed.
The trip gear that different sensitivity requires (i.e. different dropout power) is applicable in order to manufacture, can by arranging sept in the permanent magnet mounting groove of coil brace 7, to regulate permanent magnet 4 relative to the distance of the axis of pin 2, change the Distribution of Magnetic Field of permanent magnet 4, make the magnetic field of this permanent magnet 4 become large to the suction of pin 2 or diminish, offset the size of the induced field (corresponding to drop-away current) needed for this suction with adjustment portion.Like this, the trip gear of different size can use general assembling parts, it reduces manufacturing cost, and makes the adjustment for single trip gear also more simple.
Fig. 8 A-8B shows the tripping mechanism according to another execution mode of the present disclosure.The difference of this execution mode and aforementioned embodiments is, in tripping mechanism, do not provide permanent magnet.When circuit normally works, coil is not charged, pin 2 only under the effect of spring 5 (now spring 5 extends naturally) farthest stretch out magnetic conduction framework 1, but now pin 2 not trigger switch mechanism action (as shown in figure 8).When there is electric leakage in operating circuit, the coil 6 (not shown in Fig. 8 A-8B) of tripping mechanism is charged, the induced field produced produces magnetic attraction to pin 2, such that pin 2 overcomes the resistance of spring 5 and move in the direction towards Compress Spring, namely pin 2 is shunk back in framework 1.The boss 23 of the first end 21 of pin 2 drives switch mechanism movement in the motion of shrinking back, thus turns off operating circuit (as illustrated in figure 8b).The tripping mechanism of this execution mode has the magnetic conductive loop structure similar with last execution mode, thus has the Advantageous techniques effect same with last execution mode.
Tripping mechanism of the present disclosure is applicable in earth leakage protective device.This earth leakage protective device comprises switching mechanism and tripping mechanism of the present disclosure; wherein the coil 6 of tripping mechanism is electrically connected to the operating circuit that earth leakage protective device connects; tripping mechanism coordinates with switching mechanism to make when occurring to leak electricity; coil 6 is energized to trigger described switch mechanism movement to cut off described operating circuit, thus reaches earth leakage protective function.This earth leakage protective device can be the various electric components such as earth leakage circuit-breaker, electric leakage protection relay, earth leakage protective socket.
Should understand, the object described for convenience, the orientation of vertically placing based on the pin of tripping mechanism is herein described.The direction of " upper and lower, left and right " herein all describes based on this location.Obviously, as required, this tripping mechanism can with various towards arranging.And the directivity of " upper and lower, left and right " between each feature described herein describe all by place along with tripping mechanism towards change and change accordingly, but the relative position relation between each feature can not change.
Give specification of the present disclosure for the object illustrated and describe, but it is not intended to be exhaustive or be limited to disclosed form.It may occur to persons skilled in the art that a lot of amendment and variant.Such as, can by the various known mode that is fastenedly connected by the free end of magnetic conduction framework 1 together with magnetic conductive board compact siro spinning technology, such as buckle connects, is threaded.
Therefore; execution mode is to principle of the present disclosure, practical application are described better and enable the other staff in those skilled in the art understand following content and select and describe; namely; under the prerequisite not departing from disclosure spirit, all modifications made and replacement all will fall in the disclosure protection range of claims definition.
Claims (10)
1. a tripping mechanism, comprising:
Magnetic conduction framework (1), it has two supporting legs (11,12) with the mid portion (13) being connected described two supporting legs (11,12), described mid portion (13) has pin-and-hole (14);
Pin (2), axially movably can be arranged on described two supporting legs (11,12) also through described pin-and-hole (14) between, have near the first end (21) of described pin-and-hole (14) and the second end (22) away from described pin-and-hole (14);
Magnetic conductive board (3), is coupled to the free end of described two supporting legs (11,12);
Bias mechanism (5), for providing the active force along first direction to described pin (2), wherein said first direction along described pin (2) axially from described second end (22) of described pin (2) towards described first end (21); And
Coil (6), it is around described pin (2) and between described two supporting legs (11,12) being positioned at described magnetic conduction framework (1).
2. tripping mechanism according to claim 1, wherein, also comprises coil brace (7), and described magnetic conduction framework (1) and described magnetic conductive board (3) are all arranged on described coil brace (7).
3. tripping mechanism according to claim 2, wherein, at described two supporting legs (11 of described magnetic conduction framework (1), 12) each free end in has two the resilient engagement portions (16) limited by fluting (15), the base (71) of described coil brace (7) has a pair installing hole (74), described two supporting legs (11 of described magnetic conduction framework (1), 12) two resilient engagement portions (16) of each free end in deform in resilient engagement to described installing hole (74) respectively, make described two supporting legs (11 of described magnetic conduction framework (1) thus, 12) free end and the magnetic conductive board (3) be arranged on described coil brace (7) are combined closely.
4. tripping mechanism according to claim 3, wherein, described magnetic conductive board (3) is positioned in the magnetic conductive board mounting groove on the described base of described coil brace (7), described magnetic conductive board (3) forms the stage portion (31) of narrowed width respectively at two ends, described stage portion (31) stretches in described installing hole (74), thus two the resilient engagement portions (16) be coupled in each described installing hole (74) clamp described stage portion (31), to realize described two supporting legs (11 of described magnetic conduction framework (1), 12) free end is combined closely with magnetic conductive board (3) that are arranged on described coil brace (7).
5. tripping mechanism according to claim 2, wherein, described coil brace (7) has the frame support (72) of the mid portion (13) for fixing described magnetic conduction framework (1).
6. the tripping mechanism according to any one of claim 1-5, wherein, also comprise the permanent magnet (4) being coupled to described magnetic conductive board (3), described permanent magnet (4) is at least two permanent magnets distributed about the axisymmetrical of described pin (2).
7. tripping mechanism according to claim 6, wherein, described permanent magnet (4) is positioned in the permanent magnet mounting groove on the described base (71) of described coil brace (7).
8. tripping mechanism according to claim 7, wherein, also sept is provided with, to regulate described permanent magnet (4) relative to the distance of the axis of described pin (2) in the described permanent magnet mounting groove of described coil brace (7).
9. the tripping mechanism according to any one in claim 1-5, wherein, described magnetic conduction framework (1), described pin (2) and described magnetic conductive board (3) are stainless steel.
10. an earth leakage protective device; comprise switching mechanism and the tripping mechanism according to any one in aforementioned claim; the described coil (6) of wherein said tripping mechanism is electrically connected to the operating circuit that described earth leakage protective device connects; described tripping mechanism coordinates with described switching mechanism to make when occurring to leak electricity, and described coil (6) energising is to trigger described switch mechanism movement to cut off described operating circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410265866.5A CN105336553B (en) | 2014-06-13 | 2014-06-13 | Tripping mechanism and earth leakage protective device |
| PCT/CN2015/081369 WO2015188783A1 (en) | 2014-06-13 | 2015-06-12 | Tripping mechanism and leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410265866.5A CN105336553B (en) | 2014-06-13 | 2014-06-13 | Tripping mechanism and earth leakage protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105336553A true CN105336553A (en) | 2016-02-17 |
| CN105336553B CN105336553B (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410265866.5A Active CN105336553B (en) | 2014-06-13 | 2014-06-13 | Tripping mechanism and earth leakage protective device |
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| CN (1) | CN105336553B (en) |
| WO (1) | WO2015188783A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20210225606A1 (en) * | 2020-01-16 | 2021-07-22 | Chengli Li | Leakage current protection device employing a pivoting actuator in the trip assembly |
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| CN201015108Y (en) * | 2006-11-13 | 2008-01-30 | 上海焕德机电制品有限公司 | Electromechanical tripping gear for creepage protector |
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| CN101814401A (en) * | 2010-04-16 | 2010-08-25 | 苏州工业园区非而智能电器有限公司 | Tripping device of molded case circuit breaker |
| CN102549683A (en) * | 2009-06-24 | 2012-07-04 | 约翰逊电动德累斯顿有限公司 | Magnetic trigger mechanism |
| CN102656658A (en) * | 2009-09-25 | 2012-09-05 | 伊顿工业(荷兰)有限公司 | Trip unit |
| CN204118015U (en) * | 2014-06-13 | 2015-01-21 | 施耐德电气工业公司 | Tripping mechanism and earth leakage protective device |
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| JP4277719B2 (en) * | 2004-03-18 | 2009-06-10 | 富士電機機器制御株式会社 | Release electromagnetic solenoid |
| JP2007234250A (en) * | 2006-02-27 | 2007-09-13 | Fuji Electric Fa Components & Systems Co Ltd | Breaker tripping device |
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|---|---|---|---|---|
| WO2000016460A1 (en) * | 1998-09-16 | 2000-03-23 | Siemens Aktiengesellschaft | Protective circuit-breaker device |
| CN201015108Y (en) * | 2006-11-13 | 2008-01-30 | 上海焕德机电制品有限公司 | Electromechanical tripping gear for creepage protector |
| CN101399139A (en) * | 2007-04-09 | 2009-04-01 | 伊顿公司 | Electrical switching apparatus accessory sub-assembly employing reversible coil frame, and accessory and electrical switching apparatus |
| CN102549683A (en) * | 2009-06-24 | 2012-07-04 | 约翰逊电动德累斯顿有限公司 | Magnetic trigger mechanism |
| CN102656658A (en) * | 2009-09-25 | 2012-09-05 | 伊顿工业(荷兰)有限公司 | Trip unit |
| CN101814401A (en) * | 2010-04-16 | 2010-08-25 | 苏州工业园区非而智能电器有限公司 | Tripping device of molded case circuit breaker |
| CN204118015U (en) * | 2014-06-13 | 2015-01-21 | 施耐德电气工业公司 | Tripping mechanism and earth leakage protective device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015188783A1 (en) | 2015-12-17 |
| CN105336553B (en) | 2017-12-01 |
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