CN102005344B - Tripping gear of frame-type breaker - Google Patents
Tripping gear of frame-type breaker Download PDFInfo
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- CN102005344B CN102005344B CN 201010550471 CN201010550471A CN102005344B CN 102005344 B CN102005344 B CN 102005344B CN 201010550471 CN201010550471 CN 201010550471 CN 201010550471 A CN201010550471 A CN 201010550471A CN 102005344 B CN102005344 B CN 102005344B
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Abstract
The invention discloses the tripping gear of a frame-type breaker, which belongs to the field of low-voltage apparatus. The tripping gear comprises a shell, a yoke iron, an induction coil, a magnetic tripper, a first movable iron core, a second movable iron core, a first spring, a second spring, a thermal deformation/bending component and a movable iron core control device, wherein an inner shell is formed at one side of the shell, and a yoke iron cavity is formed between the inner shell and the shell; the yoke iron is provided with a first yoke iron arm and a second yoke iron arm, and a yoke iron opening is formed between the first and second yoke iron arms; the induction coil is provided with a central through-hole and arranged at the yoke iron opening, and the magnetic tripper is electrically connected with the induction coil; one end of the first movable iron core is accommodated in a first movable iron core hole, and the other end of the first movable core extends to the central through-hole; one end of the second movable iron core hole is accommodated in a second movable iron core hole, and the other end of the second movable iron core hole extends to the central through-hole; the two ends of the first and the second springs are respectively positioned on the first and the second movable iron cores, and the middle portions of the first and the second springs are arranged in the central through-hole; one end of the thermal deformation/bending component is fixed with a primary loop conductor and the other end of the thermal deformation/bending component is a free end; and the movable iron core control device is configured on the inner wall of the inner shell. The tripping device of the invention has the advantages of wide applications, ideal electromagnetic compatibility, and capability of being not affected by the loading of a major loop, and realizing the overload protection and short circuit protection of the breaker.
Description
Technical field
The invention belongs to the low voltage electrical apparatus technology field, be specifically related to a kind of trip gear of frame-type circuit breaker.
Background technology
Frame-type circuit breaker (abbreviation frame circuit breaker) is the bigger low-tension switch electric appliance of a kind of capacity; In distribution system, play and connect and the disjunction normal current; And automatic shutdown circuit when under fault state, being the circuit abnormal situation is with protection circuit equipment and personal safety.The functional module that people cut off response fault current and trigger action mechanism action in the frame-type circuit breaker in circuit is called trip gear.Usually the trip gear that digital processing chip is used for frame-type circuit breaker in the prior art; Current parameters is calculated and judge by digital processing chip; After reaching predefined operation condition; Send triggering signal for the execution electromagnet of trip gear, the operating mechanism action by the action triggers circuit breaker of carrying out electromagnet makes faulty circuit cut off (disconnection).
There is following shortcoming in the above-mentioned trip gear that digital processing chip is used for frame-type circuit breaker: because the working power of digital processing chip is from the inductive energy of current transformer to the major loop alternating current; Thereby no current (promptly unloaded) or major loop are under the DC power supply situation in major loop; Digital processing chip does not have working power, thereby can not cut off paroxysmal short trouble rapidly; In addition, owing to used digital processing chip, so electromagnetic compatibility problem has also restricted its use in some strong electromagnetic occasion.Certainly,, perhaps use other active electric current instrument transformer, can address the above problem in the direct current occasion through the secondary power supply that is independent of major loop is provided to trip gear.Yet this kind technical measures undoubtedly can increase the complexity that cost particularly increases system.
Summary of the invention
Task of the present invention is to provide a kind of and the secondary power supply that is independent of major loop need be provided and can adapts to ac and dc systems ideally, does not receive the major loop load effect and need not to use digital processing chip and use the trip gear of the frame-type circuit breaker that embodies excellent Electro Magnetic Compatibility.
Task of the present invention is accomplished like this; A kind of trip gear of frame-type circuit breaker; Comprise have one be used to wear the primary circuit conductor resigning hole on the conductor of primary circuit housing; One side of this housing and around said primary circuit conductor resigning hole around constitute an inner housing, constitute a yoke chamber between the outer wall of this inner housing and the inwall of housing; One yoke; Be contained in the described yoke chamber; This yoke has one first yoke arm and one second yoke arm; And be formed with a yoke opening between first, second yoke arm, wherein: offer one first moving iron core hole at the terminal of the first yoke arm and at position, and move the corresponding second moving iron core hole, iron core hole in the terminal and same position and said first that offers at position of the second yoke arm corresponding to said yoke opening corresponding to said yoke opening; One has the induction coil and a magnetic release of center through hole, and induction coil is positioned at the position of said yoke opening, and magnetic release and induction coil are electrically connected; One first moving iron core, an end of this first moving iron core are contained in the said first moving iron core hole, and the other end then is insinuated in the described center through hole; One second moving iron core, an end of this second moving iron core are contained in the said second moving iron core hole, and the other end probes in the center through hole equally; Being used to the said first moving iron core and the second moving iron core provides one first spring and one second spring of the actuating force of taking direction each other apart; One end of this first spring is positioned on the described first moving iron core; The other end is positioned on the second yoke arm, and an end of second spring is positioned on the said first moving iron core, and the other end then is positioned on the second moving iron core; The middle part then is positioned at described center through hole, and wherein: first, second spring constitutes nestable relation each other; One thermal deformation bender element, an end of this thermal deformation bender element and said primary circuit conductor are fixed, and the other end constitutes free end, and this free end leans out the side of primary circuit conductor; One moving iron core control device, this moving iron core control device is provided on the inwall of said inner housing up and downly, and is corresponding with said free-ended top, and matches with said moving iron core.
In a concrete embodiment of the present invention; Described inner housing extends a pair of parallel sliding bar blend stop in the inboard corresponding to a shell wall of the said second yoke arm; Constitute the sliding bar sliding cavity between a pair of sliding bar blend stop; On the diapire of inner housing and in position, offer a sliding bar piggybacking hole corresponding to the bottom of said sliding bar sliding cavity; And on the roof of inner housing, constitute a return spring holder; This return spring holder is corresponding with described sliding bar piggybacking hole; The end of the described second yoke arm offers the sliding bar through hole, and this sliding bar through hole communicates with said moving iron core hole, by the free end of said thermal deformation bender element whether the actuating of said moving iron core control device moves up and down the iron core control device and use in said sliding bar sliding cavity the said second moving iron core is discharged or locking.
In another concrete embodiment of the present invention; Offer a sliding bar lock slots on the described second moving iron core; Described moving iron core control device comprises a sliding bar and a back-moving spring, matches with said sliding bar lock slots by way of said sliding bar piggybacking hole and sliding bar through hole successively in the lower end of sliding bar, and the upper end of sliding bar constitutes a sliding bar actuator arm; This sliding bar actuator arm is towards described free end; And corresponding to free-ended top, the upper end of back-moving spring is bearing on the described return spring holder, and the lower end of back-moving spring is bearing on the top end face of sliding bar actuator arm.
In another concrete embodiment of the present invention, the described first moving iron core offers a spring-loaded chamber towards the central authorities of an end of the said second moving iron core, and on the outer wall of the first moving iron core, constitutes a spring bearing housing; The described second moving iron core is constituting a spring positioning seat on the end face of an end of the said first moving iron core; And on the outer wall of the second moving iron core, constitute a bearing; Said second spring is placed in described first spring, and an end bearing of this second spring is in described spring-loaded chamber, and the other end then is bearing on the described spring positioning seat; One end bearing of first spring is on said spring bearing housing, and the other end then is bearing on the said second yoke arm.
In another concrete embodiment of the present invention, constitute a back-moving spring supporting base on the top end face of described sliding bar actuator arm, this back-moving spring supporting base is corresponding with described return spring holder.
Also have among the concrete embodiment of the present invention, described return spring holder is bead or pit, and described back-moving spring supporting base is similarly bead or pit.
more of the present invention and among concrete embodiment, the shape of cross section of described sliding bar is rectangle or circle, and sliding bar is processed by non-conducting material.
In of the present invention and then concrete embodiment, the global shape of described yoke takes the shape of the letter U or type U-shaped.
Of the present invention again more and among concrete embodiment, described housing and inner housing constitute three-back-shaped shape.
In again of the present invention and then concrete embodiment, described housing also disposes one and is used for cap that said yoke is covered, and offer on this cap one with the corresponding primary circuit of conductor resigning hole, said primary circuit conductor through hole.
Technical scheme provided by the invention is owing to adopted said structure; Thereby can embody following technique effect: owing to need not to rely on the secondary power supply that is independent of major loop, therefore there is not the fastidious factor of application scenario in one of which; Both, can be applicable to the DC circuit system again applicable to the alternating current circuit system; Its two owing to abandoned the digital processing chip in the prior art, therefore can not receive electromagnetic compatibility whether influence and have desirable Electro Magnetic Compatibility; Its three, do not receive the influence of major loop load, because traditional trip gear; When needing major loop through certain electric current; The ability operate as normal, promptly traditional trip gear can not be protected emergent short circuit current under Light Condition, and technical scheme provided by the invention is not influenced by this; Its four, both can realize the circuit breaker overload protection, can realize circuit breaker short circuit protection again.
Description of drawings
Fig. 1 is a concrete example structure figure of the present invention.
Fig. 2 is the cutaway view of Fig. 1.
Fig. 3 is applied to the sketch map of multipole frame circuit breaker for trip gear of the present invention.
Embodiment
For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technical scheme category of the present invention.
Ask for an interview Fig. 1 and Fig. 2; Provided by insulating material and the housing 1 that forms by Mould Machining; One side of this housing 1 says that more properly housing 1 is towards a side of yoke 2 and be preferably placed at middle section and constitute the inner housing 12 that is deposited on the housing 1 (promptly integrally formed with housing 1); By shown in Figure 1; Inner housing 12 will be opened in the primary circuit conductor resigning hole 11 of the central authorities of housing 1 and go along with sb. to guard him, and the passage that connects around being formed with between the inwall of the outer wall of inner housing 12 and housing 1, constitute yoke chamber 13 by this passage.And then by shown in Figure 1, both form the three-back-shaped structure of Chinese character each other inside and outside housing 12,1.The yoke 2 of one piece of U-shaped or type U-shaped is placed in the aforesaid yoke chamber 13; This yoke 2 has the first yoke arm 21 and the second yoke arm 22 that is mutually symmetrical; Wherein: the end (also can claim tip) at the first yoke arm 21 offers one first moving iron core hole 211; And offer one second moving iron core hole 221 at the end (equally also can claim tip) of the second yoke arm 22; First, second moving iron core hole 211,221 corresponds to each other, and promptly both are on the same horizontal axis, first, second yoke arm 21, constitutes yoke opening 23 between 22.The notion of aforesaid type of U-shaped is meant that the shape of yoke 2 approaches U-shaped, and has little vast difference between the U-shaped.Induction coil 3 with center through hole 31 (also can claim the hub of a spool hole) is placed in aforesaid yoke opening 23 places; And center through hole 31 is corresponding with first, second moving iron core hole 211,221, and a pair of lead-out wires of coil 32 of induction coil 3 is electrically connected or claims with magnetic release 4 and is electrically connected.One end (illustrated left end) of one first moving iron core 5 is placed in the first moving iron core hole 211, and the other end (illustrated right-hand member) then is insinuated in the center through hole 31 (left end of center through hole 31); One end (illustrated right-hand member) of one second moving iron core 6 is placed in the second moving iron core hole 221, and the other end (illustrated left end) then is insinuated in the center through hole 31 (right-hand member of center through hole 31).Preferred scheme is: in the first moving iron core hole 211, insert a spacer 2111 earlier, then the first moving iron core 5 is inserted in the through hole of spacer 2111.
The aforesaid first moving iron core 5 offers a spring-loaded chamber 51 towards end of the aforesaid second moving iron core 6 and the central part that is positioned at the length direction of the first moving iron core 5, and on the outer wall of the first moving iron core 5, constitutes the spring bearing housing 52 of the outer surface that protrudes in the first moving iron core 5; The aforesaid second moving iron core 6 on the end face of an end of the first moving iron core 5 and the central authorities that are positioned at end face constitute one and protrude in the spring positioning seat 63 of end face, and on the outer wall of the second moving iron core 6, constitute one protrude in the outer surface of the second moving iron core 6 bearing 62.
Provided first, second spring 7a, the 7b that first, second moving iron core 5,6 provides the actuating force of opening direction that be used to that is nestable relation each other among the figure; Here alleged nestable relation is meant first, second spring 7a, 7b, and both are overlapping, in the present embodiment the second spring 7b are placed in the center through hole of length direction of the first spring 7a (in the cavity).The end of the second spring 7b is that left end shown in Figure 1 is supported in the spring-loaded chamber 51, and the other end of the second spring 7b is that right-hand member shown in Figure 1 is bearing on the spring positioning seat 63.The end of the first spring 7a is that left end shown in Figure 1 is bearing on the spring bearing housing 52, and the other end is that right-hand member shown in Figure 1 is bearing on the second yoke arm 22.Wherein: the middle part of first, second spring 7a, 7b is positioned at the center through hole 31 of aforesaid induction coil 3.Aforesaid spring bearing housing 52 matches towards the position, aperture in the second moving iron core hole 221 with the first moving iron core hole 211, and aforesaid bearing 62 matches towards the position, aperture in the first moving iron core hole 211 with the second moving iron core hole 221.
Aforesaid housing 1 also is furnished with a cap 14; On this cap 14 and corresponding to the position of aforesaid primary circuit conductor resigning hole 11, offer a primary circuit conductor through hole 141, the present invention is set on the primary circuit conductor 10 of Fig. 1 and Fig. 2 signal.
Continue to see Fig. 1 and Fig. 2; Constitute a pair of parallel sliding bar blend stop 121 at aforesaid inner housing 12 corresponding to the inboard of the shell wall of a side of the second yoke arm 22; Constitute sliding bar sliding cavity 1211 between a pair of sliding bar blend stop 121; On the diapire of inner housing 12 and in bottom, offer the sliding bar piggybacking hole 122 that communicates with yoke chamber 13, and on the roof of inner housing 12 and at position, be processed with a return spring holder 123 corresponding to sliding bar piggybacking hole 122 corresponding to aforesaid sliding bar sliding cavity 1211.Offer sliding bar through hole 222 at the terminal of the aforesaid second yoke arm 22 and towards a side of the first yoke arm 21, it is corresponding that this sliding bar through hole 222 and second moves iron core hole 221, and corresponding with aforesaid sliding bar piggybacking hole 122.On the aforesaid second moving the iron core 6 and middle part that is positioned at the length direction of the second moving iron core 6 substantially is concaved with a sliding bar lock slots 61, and sliding bar lock slots 61 is corresponding to aforesaid sliding bar through hole 222.The end (diagram left end) of thermal deformation bender element 8 that constitutes the trip gear of frame-type circuit breaker of the present invention is fixed on the aforesaid primary circuit conductor 10 with welding or riveted joint or with other similar fixed form, and the other end of thermal deformation bender element 8 (diagram right-hand member) leans out the sidepiece of primary circuit conductor 10 and constitutes free end 81.Undoubtedly, thermal deformation bender element 8 is a bimetal leaf.
As technical essential of the present invention; Also include a moving iron core control device 9; Preferably but not the moving iron core control device 9 that definitely is limited to comprises a sliding bar 91 and a back-moving spring 92; Sliding bar 91 is filled the post of by non-conducting material, and shape of cross section is not limited to illustrated rectangle, for example also can adopt cylinder; When adopting cylindrical sliding bar 91; Aforesaid sliding bar piggybacking hole 122, sliding bar through hole 222 should be made adaptations, are matching with the aforesaid sliding bar lock slots 61 that is formed on the second moving iron core 6 with sliding bar through hole 222 by way of aforesaid sliding bar piggybacking hole 122 corresponding to sliding bar sliding cavity 1211 places successively in the lower end of sliding bar 91, and the upper end of sliding bar 91 (top end) constitutes a sliding bar actuator arm 911 with the level bending; This sliding bar actuator arm 911 is corresponding to the top of the free end 81 of aforesaid thermal deformation bender element 8; And on the end face of the top of sliding bar actuator arm 911, constitute a back-moving spring supporting base 9111, this back-moving spring supporting base 9111 is corresponding with aforesaid return spring holder 123, and promptly both are on the same longitudinal axis.The lower end of back-moving spring 92 is bearing on the back-moving spring supporting base 9111, and the upper end then is bearing on the return spring holder 123.In the present embodiment, return spring holder 123 is the bead form with back-moving spring supporting base 9111, but also can both all be constituted pit, and perhaps selecting one of which among both is bead, and another is a pit.Because sliding bar actuator arm 911 is corresponding with the top of the free end 81 of thermal deformation bender element 8 or claim that cooperation is touched in subsides mutually; Therefore; Whether the sliding bar 91 of iron core actuating device 9 is moved up and down in sliding bar sliding cavity 1211 by the actuating of the sliding bar 91 of 81 pairs of moving iron core control device 9 of free end of thermal deformation bender element 8, the sliding bar lock slots of using the second moving iron core 6 61 discharges or locking.
Ask for an interview Fig. 3 and still combine Fig. 1 and Fig. 2; When rated current during, promptly during the yoke chamber 24 of the yoke 2 through aforesaid U-shaped, in yoke 2, first, second moving iron core 5,6, form magnetic loop through primary circuit conductor 10; Because the spring counter-force that the first moving iron core 5 suffered electromagnetic attractions provide less than first, second spring 7a, 7b; Therefore the first moving iron core 5 does not move, and the spring counter-force that the second moving iron core 6 suffered electromagnetic attractions provide greater than the second spring 7b, but because the sliding bar lock slots 61 of 91 pairs second moving iron cores 6 of the sliding bar of moving iron core control device 9 is spacing; Therefore the second moving iron core 6 does not move yet, and circuit breaker normally moves.
When having served as yoke chamber 24 through the yoke 2 of U-shaped of live stream, yoke 2, the first moving iron core 5 and the second moving iron core 6 form magnetic loops.The spring counter-force that the first moving iron core 5 suffered electromagnetic attractions provide less than first, second spring 7a, 7b; So the first moving iron core 5 does not move; And the thermal deformation bender element 8 that is disposed on the primary circuit conductor 10 produces amount of deflection because of being heated, and overcomes the spring force of back-moving spring 92, and sliding bar actuator arm 911 is upwards pushed away; Make sliding bar 91 up and leave the sliding bar lock slots 61 of the second moving iron core 6, to second moving iron core 6 releases.This is that the second moving iron core 6 overcomes the spring force that the second spring 7b provides under the electromagnetic attraction effect, to the first moving iron core 5 directions motion.In attracting process, the magnetic flux generation acute variation in the magnetic loop makes in the induction coil 3 outside first, second moving iron core 5,6 and produces induced current, and induced current triggers magnetic release 4, and magnetic release 4 outwards provides the triggering energy, realizes overload protection function.
Still see Fig. 3, extremely go up in each of multipole frame-type circuit breaker trip gear of the present invention illustrated in figures 1 and 2 all is installed, induction coil 3 parallel connections of a plurality of trip gears, connecting with same magnetic release 4 forms the loop.No matter which utmost point produces overload current, then induced current is provided can both for magnetic release 4 by the induction coil that is installed on this utmost point 3, and induced current triggers magnetic release 4, by magnetic release energy outwards is provided, and realizes overload protection function.
The present invention is not limited only to the specific embodiment shown in above; But some other embodiment of the easy association that on the basis that does not break away from spirit of the present invention or intrinsic propesties, can extensively stretch; For example yoke 2 is divided into the combination of a plurality of parts; Be convenient to install and debugging, and for example increase the adjusting parts that back-moving spring 92 is regulated, or the like.Therefore, the foregoing description does not receive the restriction of any details of above description, anyly on the basis of the technical characterictic that the applicant discloses, makes form but not the change of essence or revise and all should be regarded as the claim protection range that the present invention advocates.
Claims (10)
1. the trip gear of a frame-type circuit breaker; It is characterized in that comprising have one be used to wear the primary circuit conductor resigning hole (11) on the primary circuit conductor (10) housing (1); One side of this housing (1) and around said primary circuit conductor resigning hole (11) around constitute an inner housing (12), constitute a yoke chamber (13) between the inwall of outer wall of this inner housing (12) and housing (1); One yoke (2); Be contained in the described yoke chamber (13); This yoke (2) has one first yoke arm (21) and one second yoke arm (22); And be formed with a yoke opening (23) between first, second yoke arm (21,22); Wherein: offer one first moving iron core hole (211) at the terminal of the first yoke arm (21) and at position corresponding to said yoke opening (23), and at the terminal of the second yoke arm (22) and offer a position equally at the position corresponding to said yoke opening (23) and move iron core hole (221) with the said first moving iron core hole (211) corresponding second; One has the induction coil (3) and a magnetic release (4) of center through hole (31), and induction coil (3) is positioned at the position of said yoke opening (23), and magnetic release (4) is electrically connected with induction coil (3); One first moving iron core (5), an end of this first moving iron core (5) are contained in the said first moving iron core hole (211), and the other end then is insinuated in the described center through hole (31); One second moving iron core (6), an end of this second moving iron core (6) are contained in the said second moving iron core hole (221), and the other end probes in the center through hole (31) equally; Being used to the said first moving iron core (5) and the second moving iron core (6) provides one first spring (7a) and one second spring (7b) of the actuating force of taking direction each other apart; One end of this first spring (7a) is positioned on the described first moving iron core (5); The other end is positioned on the second yoke arm (22); One end of second spring (7b) is positioned on the said first moving iron core (5); The other end then is positioned on the second moving iron core (6), and the middle part then is positioned at described center through hole (31), and wherein: first, second spring (7a, 7b) constitutes nestable relation each other; One thermal deformation bender element (8), an end of this thermal deformation bender element (8) and said primary circuit conductor (10) are fixing, and the other end constitutes free end (81), and this free end (81) leans out the side of primary circuit conductor (10); One moving iron core control device (9); Should be provided on the inwall of said inner housing (12) by moving iron core control device (9) up and downly; Corresponding with the top of said free end (81); And match with said moving iron core (6), whether said free end (81) moves up and down iron core control device (9) to the actuating of moving iron core control device (9) and uses the said second moving iron core (6) is discharged or locks.
2. the trip gear of frame-type circuit breaker according to claim 1; It is characterized in that described inner housing (12) extends a pair of parallel sliding bar blend stop (121) in the inboard corresponding to a shell wall of the said second yoke arm (22); Constitute sliding bar sliding cavity (1211) between a pair of sliding bar blend stop (121); On the diapire of inner housing (12) and in position, offer a sliding bar piggybacking hole (122) corresponding to the bottom of said sliding bar sliding cavity (1211); And on the roof of inner housing (12), constitute a return spring holder (123); This return spring holder (123) is corresponding with described sliding bar piggybacking hole (122); The end of the described second yoke arm (22) offers sliding bar through hole (222), and this sliding bar through hole (222) communicates with the said second moving iron core hole (221), and said moving iron core control device (9) moves up and down in said sliding bar sliding cavity (1211).
3. the trip gear of frame-type circuit breaker according to claim 2; It is characterized in that offering a sliding bar lock slots (61) on the described second moving iron core (6); Described moving iron core control device (9) comprises a sliding bar (91) and a back-moving spring (92); Match with said sliding bar lock slots (61) by way of said sliding bar piggybacking hole (122) and sliding bar through hole (222) successively in the lower end of sliding bar (91); And the upper end of sliding bar (91) constitutes a sliding bar actuator arm (911), and this sliding bar actuator arm (911) is towards described free end (81), and corresponding to the top of free end (81); The upper end of back-moving spring (92) is bearing on the described return spring holder (123), and the lower end of back-moving spring (92) is bearing on the top end face of sliding bar actuator arm (911).
4. the trip gear of frame-type circuit breaker according to claim 1; It is characterized in that the described first moving iron core (5) offers a spring-loaded chamber (51) towards the central authorities of an end of the said second moving iron core (6), and on the outer wall of the first moving iron core (5), constitute a spring bearing housing (52); The described second moving iron core (6) is constituting a spring positioning seat (63) on the end face of an end of the said first moving iron core (5); And on the outer wall of the second moving iron core (6), constitute a bearing (62); Said second spring (7b) is placed in described first spring (7a); One end bearing of this second spring (7b) is in described spring-loaded chamber (51); The other end then is bearing on the described spring positioning seat (63), and an end bearing of first spring (7a) is on said spring bearing housing (52), and the other end then is bearing on the said second yoke arm (22).
5. the trip gear of frame-type circuit breaker according to claim 3; It is characterized in that constituting a back-moving spring supporting base (9111) on the top end face of described sliding bar actuator arm (911), this back-moving spring supporting base (9111) is corresponding with described return spring holder (123).
6. the trip gear of frame-type circuit breaker according to claim 5 is characterized in that described return spring holder (123) is bead or pit, and described back-moving spring supporting base (9111) is similarly bead or pit.
7. the trip gear of frame-type circuit breaker according to claim 3, the shape of cross section that it is characterized in that described sliding bar (9) is rectangle or circle, sliding bar (9) is processed by non-conducting material.
8. the trip gear of frame-type circuit breaker according to claim 1 is characterized in that the global shape of described yoke (2) takes the shape of the letter U or type U-shaped.
9. the trip gear of frame-type circuit breaker according to claim 1, both constitute three-back-shaped shape to it is characterized in that described housing (1) and inner housing (12).
10. the trip gear of frame-type circuit breaker according to claim 1; It is characterized in that described housing (1) also disposes one and is used for cap (14) that said yoke (2) is covered, and offer on this cap (14) one with said primary circuit conductor resigning hole (11) corresponding primary circuit conductor through hole (141).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010550471 CN102005344B (en) | 2010-11-19 | 2010-11-19 | Tripping gear of frame-type breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010550471 CN102005344B (en) | 2010-11-19 | 2010-11-19 | Tripping gear of frame-type breaker |
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| CN102005344A CN102005344A (en) | 2011-04-06 |
| CN102005344B true CN102005344B (en) | 2012-12-05 |
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| CN103311062B (en) * | 2013-05-14 | 2015-06-10 | 常熟瑞特电气股份有限公司 | Back-up protection device for frame type circuit breaker |
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| CN1312949A (en) * | 1998-08-14 | 2001-09-12 | 西门子公司 | Device with axially positionable coil winding |
| EP0981148A2 (en) * | 1998-08-17 | 2000-02-23 | CMC Carl Maier + Cie AG | Trip device for a circuit breaker, especially for an earth fault circuit breaker |
| CN1665379A (en) * | 2004-03-03 | 2005-09-07 | 陈庆荣 | Microelectron controlled release for electric element |
| EP1936651A2 (en) * | 2006-12-20 | 2008-06-25 | General Electric Company | Current trip unit for circuit breaker |
| CN101359561A (en) * | 2007-08-03 | 2009-02-04 | 施耐德电器工业公司 | Release with stepped yoke structure and circuit breaker with such release |
| CN101299402A (en) * | 2008-05-31 | 2008-11-05 | 常熟开关制造有限公司(原常熟开关厂） | Pyromagnetic release |
| CN101685728A (en) * | 2008-09-26 | 2010-03-31 | 浙江正泰电器股份有限公司 | Thermomagnetic tripper of breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102005344A (en) | 2011-04-06 |
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