CN103441047B - Tripping trigger device for small residual-current circuit breaker - Google Patents
Tripping trigger device for small residual-current circuit breaker Download PDFInfo
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- CN103441047B CN103441047B CN201310419602.6A CN201310419602A CN103441047B CN 103441047 B CN103441047 B CN 103441047B CN 201310419602 A CN201310419602 A CN 201310419602A CN 103441047 B CN103441047 B CN 103441047B
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Abstract
The invention provides a tripping trigger device for a small residual-current circuit breaker. The tipping trigger device is characterized by comprising a shell, an electric leakage sensing assembly, a transmission part and a triggering part, wherein the electric leakage sensing assembly, the transmission part and the triggering part are arranged in the shell, the triggering part is suitable for triggering the tripping of a tripping mechanism, the electric leakage sensing assembly generates a horizontal impelling force after sensing leakage current with specific quantity, the transmission part rotates under the action of the horizontal impelling force, and the triggering part is driven to trigger the tripping of the tripping mechanism under the action of the rotating of the transmission part.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology field, be specifically related to a kind of dropout trigger equipment of Minitype electrical leakage breaker.
Background technology
In family expenses electric power system, in order to safety and the protection household electrical appliance of user, usually Minitype electrical leakage breaker can be installed, and improving constantly along with power industry and electricity consumption level, require more and more higher to the performance, quality etc. of above-mentioned Minitype electrical leakage breaker; As everyone knows, general Minitype electrical leakage breaker is combined by miniature circuit breaker body and disengaging deivce of earth leakage, the parts used are a lot, such Minitype electrical leakage breaker volume is larger, it is very inconvenient that family uses, and thus the Minitype electrical leakage breaker that a kind of volume is little, breaking capacity is high is developed in people's an urgent demand.
Existing for earth leakage protective Minitype electrical leakage breaker, mainly comprise dropout trigger equipment and the trip gear that can carry out threading off under the effect of dropout trigger equipment, dropout trigger equipment mainly comprises shell, mechanism base, bedplate, is equipped with tripping coil in the enclosure, iron core, test button spring, test button, wiring board, zero-sequence transformer, free-handle, U-shaped connecting rod, tripping, snap close and rotation seat etc., during use, when zero-sequence transformer senses leakage current, above-mentioned secondary can export a voltage to wiring board, when voltage reaches certain value, can trigger the controlled silicon conducting be arranged on above-mentioned wiring board, the tripping coil be now connected on controlled silicon conducting circuit can produce electromagnetic propulsion power, under the effect of electromagnetic propulsion power, pass through iron core, the multiple action of torsion spring and free-handle could realize final dropout, above-mentioned dropout trigger equipment complex structure, and volume is comparatively large, and mould development input amount is large, and the construction cycle is long, does not have versatility with other Minitype electrical leakage breakers.
Summary of the invention
Therefore, the technical problem that will solve of the present invention is to provide the trigger equipment of the Minitype electrical leakage breaker tripping mechanism that a kind of structure is simple, reliable in action, volume are little.
For this reason, the invention provides a kind of dropout trigger equipment of Minitype electrical leakage breaker, comprise shell, be arranged on the electric leakage inductive component in described shell, driving member and be suitable for triggering the trigger member of tripping mechanism dropout, described electric leakage inductive component produces horizontal impulse after the leakage current sensing specific size, described driving member rotates under the effect of described horizontal impulse, and described trigger member drives triggering tripping mechanism to thread off by the rotary action of described driving member.
Described driving member comprises driving lever, and described driving lever has installing hole, rotating shaft and power transmission shaft, and described driving lever is arranged in described housing by described rotating shaft is rotating; Described electric leakage inductive component has can the iron core connecting portion of horizontal movement under the effect of described horizontal impulse, described iron core connecting portion is arranged in described installing hole becomes the entirety that links with described driving lever, and form buffer gap in the height direction with described installing hole, make described iron core connecting portion that described driving lever can be driven under the effect of described horizontal impulse around described axis of rotation.
Described trigger member comprises dropout sheet, the long handle portion that described dropout sheet has short handle portion and becomes special angle to be fixedly connected with described short handle portion, and the free end in described long handle portion is provided with through hole; Described power transmission shaft comprises the first connecting portion and the second connecting portion, during inactive state, described second connecting portion contacts with the inwall of the length direction along described long handle portion of described through hole, and described first connecting portion to be arranged in described through hole and to have certain distance with described through hole upper and lower inwall; Described driving lever is when described axis of rotation, and the inwall that the second connecting portion of described power transmission shaft promotes described through hole makes described long handle portion move along its length, and then drives described short handle portion to trigger described tripping mechanism to thread off.
The described certain degree formed between described short handle portion with described long handle portion becomes to be less than the acute angle of 90 °.
Described electric leakage inductive component comprises and being arranged in described shell and the zero-sequence transformer of electrical connection, wiring board, controlled silicon conducting and tripping coil, described tripping coil produces described horizontal impulse under the effect of leakage current, be provided with the iron core that can be pulled by described horizontal impulse in described tripping coil inside, described iron core drives described driving member to rotate by described iron core connecting portion.
The removal hole that described installing hole has interface channel and is connected with described interface channel.
Described through hole is circular port or square opening.
Described housing is provided with gathering sill, and described gathering sill is for supporting described long handle portion, and described gathering sill is parallel to the direction of motion of described iron core.
Described long handle portion and described short handle portion one-body molded.
The dropout trigger equipment of Minitype electrical leakage breaker of the present invention has the following advantages:
1. the dropout trigger equipment of Minitype electrical leakage breaker of the present invention, by electric leakage inductive component, the mating reaction of driving member and trigger member, the iron core horizontal movement caused by electric leakage is converted into the rotation of driving lever, the horizontal movement of dropout sheet is driven again by rotating, the slope driving couple axle of the short handle portions of dropout sheet is upwards dynamic, circuit breaker tripping is disconnected cut off the electricity supply, less parts are used just to achieve stable tripping function, and by horizontal movement to rotating the conversion of arriving horizontal movement again, tripping coil and dropout sheet are spatially arranged in parallel, have compressed plane to take up room, and motion reasonably stability, Minitype electrical leakage breaker tripping mechanism of the present invention is made to take up room little on the whole, compact conformation, be convenient to installing and using of normal domestic use.
2. the dropout trigger equipment of Minitype electrical leakage breaker of the present invention, have employed driving lever as the medium transmitting iron core connecting portion motive force, iron core connecting portion is arranged in the installing hole of described driving lever, and in the short transverse of installing hole, form buffer gap with described installing hole, iron core connecting portion, under the effect of horizontal impulse, drives described driving lever around described axis of rotation.Because described driving lever is fixed on case for circuit breaker by rotating shaft is rotating, can not offset on the direction irrelevant with transmission, thus stable transmission is reliable, and deviation is very little.The rotation horizontal impulse that the inductive component that leaks electricity produces being converted into described driving lever is coordinated by described iron core connecting portion and described installing hole, for the triggering of trigger member provides advantage, the existence of buffer gap and iron core connecting portion coordinate with installing hole the conversion achieving the direction of motion, structure is simple, takes up room little.
3. the dropout trigger equipment of Minitype electrical leakage breaker of the present invention, described trigger member comprises dropout sheet, described dropout sheet has short handle portion and becomes to be less than the acute angle of 90 ° with described short handle portion and be fixedly connected with or integrated long handle portion, the free end in described long handle portion is provided with through hole, the inclined-plane of described dropout sheet moves upward for promoting couple axle, circuit breaker tripping is opened and cuts off the electricity supply, described power transmission shaft is flat, comprises the first connecting portion and the second connecting portion, and during inactive state, described second connecting portion contacts with the inwall of the length direction along described long handle portion in described through hole, and auxiliary described dropout trigger equipment keeps stable, when the inductive component that leaks electricity senses leakage current, iron core horizontal movement, drive driving lever rotates around the axis, thus drive power transmission shaft to rotate around the axis, second connecting portion of described power transmission shaft promotes the inwall along described long handle portion length direction of described through hole, described long handle portion is moved along its length, and now described first connecting portion to be arranged in described through hole and with on described through hole, below inwall has certain distance, that is: described first connecting portion and described through hole have cushion space in the short transverse of through hole, described driving lever is when described axis of rotation, owing to there is above-mentioned cushion space, first connecting portion can not touch described dropout sheet in the height direction and cause dropout blade to occur the displacement of above-below direction, but promote described dropout sheet in the longitudinal direction by the second connecting portion and move horizontally along on the length direction in its long handle portion, and then drive described short handle portion to trigger the dropout of described tripping mechanism.By the power transmission shaft of platypelloid type on described driving lever and coordinating of through hole on described dropout sheet, the stable rotation of driving lever there is the horizontal movement having changed into dropout sheet, the stability of rotating due to driving lever is high, the horizontal movement stability of the dropout sheet triggered by it obtains enhancing, makes the short handle portion of above-mentioned dropout sheet reliably can trigger tripping mechanism and threads off.Therefore, the fit system of this kind of dropout sheet and power transmission shaft not only achieves the stability of device, also improves the sensitivity of triggering.
4. the dropout trigger equipment of Minitype electrical leakage breaker of the present invention, the described certain degree formed between described short handle portion and described long handle portion is less than 90, during horizontal movement, the conversion of motion of its length direction is the horizontal movement in the short handle portion acutangulating angle direction with length direction, thus tripping mechanism to be triggered can be arranged along the length direction in described long handle portion, the upper and lower space of effective utilization, shorten the area occupied of length direction, thus make device space utilization of the present invention reasonable, compact conformation.
5. the dropout trigger equipment of Minitype electrical leakage breaker of the present invention, the long handle portion of above-mentioned dropout sheet is arranged in the gathering sill of shell, when the motive force of driving lever transmission from iron core, above-mentioned long handle portion can only move horizontally along the direction of gathering sill, other skews can not be produced, further enhancing dropout sheet and make connected short handle portion reliable in action, enough shift lengths can be had promote or clash into couple axle and move upward, the body of circuit breaker is disconnected and cuts off the electricity supply.
6. being less than 5 millimeters with the length of the power transmission shaft be positioned on driving lever of above-mentioned through hole connection and can realizing stable drive effect of dropout trigger equipment of Minitype electrical leakage breaker of the present invention, save installing space, thus can reduce the space hold volume of finished product circuit breaker further.
Accompanying drawing explanation
Fig. 1 is the rip cutting planar structure schematic diagram of the dropout trigger equipment of the embodiment of the present invention 1 residual current circuit breaker.
Fig. 2 is the structural representation of driving lever in Fig. 1.
Fig. 3 is the structural representation of sheet of threading off in Fig. 1.
Fig. 4 is the syndeton schematic diagram of tripping coil in Fig. 1, driving lever and dropout sheet.
Fig. 5 is Fig. 1 housing guide groove structure schematic diagram.
Fig. 6 is the overall schematic of residual current circuit breaker tripping mechanism in embodiment 1.
In figure:
1-shell, 11-gathering sill; 2-dropout sheet, 21-through hole, 22-inclined-plane; 3-driving lever, 31-power transmission shaft, 31a-first connecting portion, 32b-second connecting portion, 32-installing hole, 33-rotating shaft, 34-interface channel, 35-removal hole; 4-couple axle; 5-tripping coil; 6-iron core, 61-iron core connecting portion; 7-wiring board.
Embodiment
Be described in further detail below in conjunction with the dropout trigger equipment of accompanying drawing to Minitype electrical leakage breaker of the present invention.
As shown in Figure 1, the dropout trigger equipment of the Minitype electrical leakage breaker of the present embodiment, comprise shell 1, to be arranged in shell 1 and the zero-sequence transformer (not shown) of electrical connection, wiring board 7, controlled silicon conducting (not shown) and tripping coil 5, the power-actuated iron core 6 of the electromagnetism that can be produced by tripping coil 5, passes to driving lever 3 and the dropout sheet 2 of dropout sheet 2 by the side-to-side movement of iron core 6.
Wherein, above-mentioned zero-sequence transformer has the secondary of transmission voltage, when zero-sequence transformer senses leakage current, above-mentioned secondary can export a voltage to wiring board 7, when voltage reaches certain value, can trigger the controlled silicon conducting be arranged on above-mentioned wiring board 7, the tripping coil 5 be now connected on controlled silicon conducting circuit can produce electromagnetic propulsion power.
It is inner that iron core 6 is arranged on tripping coil 5, and it has an iron core connecting portion 61, can promote iron core 6 and move right (relative to Fig. 1) after tripping coil 5 produces electromagnetic propulsion power.
As shown in Figure 2, driving lever 3 be provided with can be connected with above-mentioned iron core connecting portion 61 installing hole 32, rotating shaft 33 and power transmission shaft 31.Above-mentioned driving lever 3 is fixed on shell 1 by rotating shaft 33 is rotating, iron core connecting portion 61 is installed in installing hole 32 and forms the entirety linked with driving lever 3, and form buffer gap with installing hole 32, drive driving lever 3 33 to rotate towards the direction of tripping coil 5 around the shaft under the effect of the horizontal impulse of iron core connecting portion 61 to the right, and then cause power transmission shaft 31 33 to rotate around the shaft.
Above-mentioned trigger member comprises dropout sheet 2, as shown in Figure 3-4, dropout sheet 2 has the short handle portion that comprises and have inclined-plane 22 and becomes special angle with short handle portion and the long handle portion be fixedly connected with, the free end in above-mentioned long handle portion is provided with through hole 21, and described long handle portion becomes to be less than the acute angle of 90 ° with the junction in described short handle portion; Power transmission shaft 31 is in flat, comprise the first connecting portion 31a and the second connecting portion 31b, during inactive state, above-mentioned second connecting portion 31b contacts with the inwall of the length direction along above-mentioned long handle portion of above-mentioned through hole 21, when the first connecting portion 31a is arranged in through hole 21 and its height lower than the height of through hole 21 upper and lower inwall.During driving lever 3 33 rotation around the shaft, the inwall of the second connecting portion 31b promotion through hole 21 of power transmission shaft 31 makes above-mentioned long handle portion move along its length, and then drives the inclined-plane 22 location triggered tripping mechanism in short handle portion to thread off.Above-mentioned long handle portion and short handle portion also can be one-body molded, to form above-mentioned dropout sheet 2.
First connecting portion 31a is different with the function of the second connecting portion 31b, and during inactive state, the second connecting portion 31b contacts with the inwall of the length direction along above-mentioned long handle portion of above-mentioned through hole 21, and auxiliary above-mentioned dropout trigger equipment keeps stable.When the inductive component that leaks electricity senses leakage current, iron core 6 horizontal movement, driving lever 3 is driven to rotate, and then drive power transmission shaft 31 to rotate, power transmission shaft 31 promotes through hole 21 and along the inwall of above-mentioned long handle portion length direction, above-mentioned long handle portion is moved along its length, and to be arranged in through hole 21 and upper with through hole 21 due to above-mentioned first connecting portion 31a, below inwall has certain distance, that is: the first connecting portion 31a and above-mentioned through hole 21 have cushion space in the short transverse of through hole 21, during driving lever 3 33 rotation around the shaft, owing to there is above-mentioned cushion space, first connecting portion 31a can not touch dropout sheet 2 in the short transverse of above-mentioned through hole 21, but promote described dropout sheet 2 in the longitudinal direction by the second connecting portion 31b and move horizontally along on the length direction in its long handle portion, and then drive short handle portion to trigger tripping mechanism dropout.By the power transmission shaft 31 of platypelloid type on above-mentioned driving lever 3 and coordinating of through hole 21 on described dropout sheet 2, the stable rotation of driving lever 3 is changed into the horizontal movement of dropout sheet 2, the stability of rotating due to driving lever 3 is high, the horizontal movement stability of the dropout sheet 2 triggered by it obtains enhancing, makes the short handle portion of above-mentioned dropout sheet 2 reliably can trigger tripping mechanism and threads off.Therefore, the fit system of this kind of driving lever 3 and power transmission shaft 31 not only achieves the stability of device, also improves the sensitivity of triggering.
As seen in figs. 5-6, above-mentioned long handle portion can by support through fastening by two pieces of shells 1 gathering sill 11 inside (as shown in Figure 5) formed, gathering sill 11 is parallel to described iron core 6, when 33 rotation around the shaft of above-mentioned power transmission shaft 31, the inwall of through hole 21 can be promoted, thus drive dropout sheet 2 and its long handle portion to move in above-mentioned gathering sill 11.Above-mentioned gathering sill 11 plays an effect supporting and lead to dropout sheet 2, ensures the position of dropout sheet 2 and the reliability of movement.
In the present embodiment, in order to make dropout sheet overall structure compacter, angle between above-mentioned long handle portion and short handle portion is less than 90 °, its effect is when the horizontal movement of long handle portion, the conversion of motion of its length direction is the motion in the short handle portion becoming specific sharp angle with length direction, thus tripping mechanism to be triggered can be arranged along the length direction in described long handle portion, the upper and lower space of effective utilization, shorten the area occupied of length direction, thus make device space utilization of the present invention reasonable, compact conformation.
Further, the length arranging above-mentioned power transmission shaft 31 is less than 5mm.
When above-mentioned dropout sheet 2 moves horizontally, drive its short handle portion to move right to the right, the inclined-plane 22 in its short handle portion promotes couple axle 4 and moves upward, and breaker body is disconnected, thus cuts off the electricity supply, play earth leakage protective effect.
Above-mentioned breaker body, as the C65 miniature circuit breaker that Schneider is produced, the dropout trigger equipment of the present embodiment just for C65 miniature circuit breaker with the use of the principle of electric leakage module tripping mechanism improve.
One as the present embodiment is out of shape, and the shape of above-mentioned through hole 21 can be arranged to the hole shape that circular hole or square hole or other can realize identical function.
Improve as to the one of the present embodiment, as shown in Figure 2, the protuberance of annular is arranged in the end of iron core connecting portion 61, the removal hole 35 that installing hole 32 has interface channel 34 and is connected with interface channel 34, the internal diameter of removal hole 35 is greater than the internal diameter of installing hole 32 and interface channel 34, as shown in Figure 2, above-mentioned protuberance just can be fit into from removal hole 35, then move up along interface channel 34, and then enter the inside of installing hole 32, internal diameter due to installing hole 32 is less than the internal diameter of removal hole 35, above-mentioned protuberance can not pull out from installing hole 32 above, thus the pulling force of iron core 6 can be transmitted, pull driving lever 3 to rotate around it axle 33 to rotate, above-mentioned improvement can make that iron core connecting portion 61 is easier is fit into driving lever 3, and transmission stability is better, at this, interface channel 34 is straight channel, be more convenient for installing.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not 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 the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (8)
1. the dropout trigger equipment of a Minitype electrical leakage breaker; it is characterized in that: comprise shell (1); be arranged on the electric leakage inductive component in described shell (1), driving member and be suitable for triggering the trigger member of tripping mechanism dropout; described electric leakage inductive component produces horizontal impulse after the leakage current sensing specific size; described driving member rotates under the effect of described horizontal impulse, and described trigger member drives triggering tripping mechanism to thread off by the rotary action of described driving member;
Described driving member comprises driving lever (3), and described driving lever (3) has installing hole (32), rotating shaft (33) and power transmission shaft (31), and described driving lever (3) is arranged in described shell (1) by described rotating shaft (33) is rotating; Described electric leakage inductive component has can the iron core connecting portion (61) of horizontal movement under the effect of described horizontal impulse, described iron core connecting portion (61) is arranged in described installing hole (32) becomes the entirety that links with described driving lever (3), and form buffer gap in the height direction with described installing hole (32), make described iron core connecting portion (61) that described driving lever (3) can be driven under the effect of described horizontal impulse to rotate around described rotating shaft (33).
2. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 1, it is characterized in that: described trigger member comprises dropout sheet (2), the long handle portion that described dropout sheet (2) has short handle portion and becomes special angle to be fixedly connected with described short handle portion, the free end in described long handle portion is provided with through hole (21); Described power transmission shaft (31) comprises the first connecting portion (31a) and the second connecting portion (31b), during inactive state, described second connecting portion (31b) contacts with the inwall of the length direction along described long handle portion of described through hole (21), and described first connecting portion (31a) to be arranged in described through hole (21) and to have certain distance with described through hole (21) upper and lower inwall; Described driving lever (3) is when described rotating shaft (33) is rotated, the inwall that second connecting portion (31b) of described power transmission shaft (31) promotes described through hole (21) makes described long handle portion move along its length, and then drives described short handle portion to trigger described tripping mechanism to thread off.
3. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 2, is characterized in that: the described certain degree formed between described short handle portion with described long handle portion becomes to be less than the acute angle of 90 °.
4. the dropout trigger equipment of the Minitype electrical leakage breaker according to Claims 2 or 3, it is characterized in that: described electric leakage inductive component comprises and being arranged in described shell (1) and the zero-sequence transformer of electrical connection, wiring board (7), controlled silicon conducting and tripping coil (5), described tripping coil (5) produces described horizontal impulse under the effect of leakage current, be provided with the iron core (6) that can be pulled by described horizontal impulse in described tripping coil (5) inside, described iron core (6) drives described driving member to rotate by described iron core connecting portion (61).
5. the dropout trigger equipment of the Minitype electrical leakage breaker according to Claims 2 or 3, is characterized in that: the removal hole (35) that described installing hole (32) has interface channel (34) and is connected with described interface channel (34).
6. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 5, is characterized in that: described through hole (21) is circular port or square opening.
7. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 4, it is characterized in that: described shell (1) is provided with gathering sill (11), described gathering sill (11) is for supporting described long handle portion, and described gathering sill (11) is parallel to the direction of motion of described iron core (6).
8. the dropout trigger equipment of Minitype electrical leakage breaker according to claim 7, is characterized in that: described long handle portion and described short handle portion one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419602.6A CN103441047B (en) | 2013-09-16 | 2013-09-16 | Tripping trigger device for small residual-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419602.6A CN103441047B (en) | 2013-09-16 | 2013-09-16 | Tripping trigger device for small residual-current circuit breaker |
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| Publication Number | Publication Date |
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| CN103441047A CN103441047A (en) | 2013-12-11 |
| CN103441047B true CN103441047B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310419602.6A Active CN103441047B (en) | 2013-09-16 | 2013-09-16 | Tripping trigger device for small residual-current circuit breaker |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112530763A (en) * | 2020-12-25 | 2021-03-19 | 浙江奥来电器有限公司 | Electric leakage tripping mechanism of circuit breaker |
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| EP0849761A2 (en) * | 1996-12-20 | 1998-06-24 | ABBPATENT GmbH | Overcurrent and short circuit trip device for an electric circuit breaker |
| DE10126852B4 (en) * | 2001-06-01 | 2005-02-03 | Siemens Ag | Switching device with an electromagnetic tripping device |
| CN2938383Y (en) * | 2006-08-30 | 2007-08-22 | 刘本鹊 | Electromagnetic leakage switch |
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| CN201219090Y (en) * | 2008-06-20 | 2009-04-08 | 上海电器陶瓷厂有限公司 | Creepage tripping mechanism of creepage breaker |
| CN203055839U (en) * | 2013-01-22 | 2013-07-10 | 一开电气集团有限公司 | Novel miniature circuit breaker |
| CN203503578U (en) * | 2013-09-16 | 2014-03-26 | 安德利集团有限公司 | Tripping trigger device for small residual-current circuit breaker |
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2013
- 2013-09-16 CN CN201310419602.6A patent/CN103441047B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0849761A2 (en) * | 1996-12-20 | 1998-06-24 | ABBPATENT GmbH | Overcurrent and short circuit trip device for an electric circuit breaker |
| DE10126852B4 (en) * | 2001-06-01 | 2005-02-03 | Siemens Ag | Switching device with an electromagnetic tripping device |
| CN2938383Y (en) * | 2006-08-30 | 2007-08-22 | 刘本鹊 | Electromagnetic leakage switch |
| CN200997378Y (en) * | 2006-09-13 | 2007-12-26 | 浙江德力西电器股份有限公司 | Inleakage releasing mechanism of circuit breaker |
| CN201219090Y (en) * | 2008-06-20 | 2009-04-08 | 上海电器陶瓷厂有限公司 | Creepage tripping mechanism of creepage breaker |
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| CN203503578U (en) * | 2013-09-16 | 2014-03-26 | 安德利集团有限公司 | Tripping trigger device for small residual-current circuit breaker |
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