CN203690773U - Drawer transmission and locking mechanism of drawout type circuit breaker - Google Patents
Drawer transmission and locking mechanism of drawout type circuit breaker Download PDFInfo
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- CN203690773U CN203690773U CN201320874576.1U CN201320874576U CN203690773U CN 203690773 U CN203690773 U CN 203690773U CN 201320874576 U CN201320874576 U CN 201320874576U CN 203690773 U CN203690773 U CN 203690773U
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- lockplate
- drawout
- drawout chassis
- breaker
- square shaft
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- 238000005452 bending Methods 0.000 claims description 19
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
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- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model relates to a drawer base transmission and locking mechanism of a drawout type circuit breaker. The drawer base transmission and locking mechanism is characterized by comprising a traction roller (211), a fanning strip assembly (3), a lead screw driving device (4) and an interlocking locking device (5), wherein the lead screw driving device (4) comprises a sliding block (41), a connecting shaft (42), a threaded block (43) and a lead screw (44), the connecting shaft (42) is arranged on a driving connecting rod (31) of the fanning strip assembly (3), and the sliding block (41) is provided with a strip-shaped groove (412). The sliding block (41) is driven to move by rotation of the lead screw (44), thus the strip-shaped groove (412) in the sliding block (41) and the connecting shaft (42) are matched to drive the fanning strip assembly (3), so that the fanning strip assembly (3) drives the traction roller (211), thereby driving a circuit breaker body (2) to push into or draw out from a drawer base (1). The drawer base transmission and locking mechanism can realize the reliable locking and unlocking of three positions of connection, test and separation.
Description
Technical field
The utility model relates to low-voltage electrical apparatus, is specifically related to a kind of drawout breaker.
Background technology
Due to the facility that detects and keep in repair, withdrawable omnipotent breaker is widely used.Withdrawable omnipotent breaker is divided into breaker body and drawout chassis two parts, drawout chassis is directly connected with external power source, body can advance or extract out in drawout chassis, can realize with drawout chassis be on demand connected, the service position such as test, separation, therefore certainly will require drawout chassis to have a set of steadily reliable drive system breaker body is pushed to corresponding service position, and be equipped with reliable the locking and unlocking in corresponding positions, and prevent misoperation, cause unnecessary accident.
Summary of the invention
The purpose of this utility model is to provide the transmission of a kind of drawout breaker drawout chassis and locking mechanism, to realize positive lock and the release of connection, test, separation three positions.
For achieving the above object, the technical solution adopted in the utility model is: the transmission of a kind of drawout breaker drawout chassis and locking mechanism, and described drawout breaker comprises breaker body and drawout chassis; Described drawout chassis transmission and locking mechanism comprise traction roller, fanning strip assembly, screw rod driving device and for locking the interlocking locking device of described screw rod driving device; Described traction roller is located on breaker body, and fanning strip assembly correspondence is located in drawout chassis, and fanning strip assembly matches with traction roller, and described fanning strip assembly comprises a drive link; Described screw rod driving device is located on drawout chassis, specifically comprises slide block, connecting axle, threaded block and screw mandrel, and described slide block is provided with the axis of guide, and this axis of guide embeds the gathering sill on drawout chassis, is slidably connected with the relative drawout chassis of this slide block; Described connecting axle is located in drive link, and the corresponding bar-shaped trough coordinating with it that is provided with on described slide block; Described threaded block is embedded in slide block, threaded block has a tapped through hole, in this tapped through hole, place described screw mandrel, screw mandrel and threaded block threaded engagement, and the direction that the length direction of screw mandrel drawout chassis relative to slide block slides is consistent, and screw mandrel rotational support is on drawout chassis, rotating band movable slider with this screw mandrel moves, thereby via the bar-shaped trough on slide block and coordinating of connecting axle driving described fanning strip assembly, make fanning strip assembly drive traction roller, thereby drive breaker body in drawout chassis, advance or extract out.
In such scheme, the below of the both sides of described breaker body is provided with U-shaped bending, and this U-shaped bending comprises a flange and bending bottom surface; The inner corresponding each U-shaped bending of described drawout chassis is all provided with guide rail bar, and this guide rail bar coordinates with the flange of U-shaped bending.
In such scheme, described fanning strip assembly also comprises an axis of traction and two fanning strips, and described fanning strip is installed on the two ends of axis of traction, and fanning strip is provided with and the crank slot that draws roller and coordinate, and described drive link is fixed on the end of axis of traction.
In such scheme, described interlocking locking device comprises substrate, lockplate, release mechanism, latch release shaft, extension spring and square shaft; Described substrate and lockplate are all placed on described screw mandrel, and the relative drawout chassis of substrate is fixed, and the relative substrate of described lockplate slides, and one end of lockplate coordinates with latch release shaft, and the other end connects one end of described extension spring, the other end connection substrate of described extension spring; Described screw mandrel is provided with lock slots, and on described lockplate, correspondence is provided with card convex member, and this card convex member coordinates with lock slots inlay card, and the active force of described extension spring forces lockplate to move and makes card convex member embedding lock slots; Described release mechanism is arranged on described substrate, and coordinates with described lockplate; Described square shaft is parallel with described screw mandrel to be fixedly installed on described slide block, and square shaft is through described substrate and lockplate; Described square shaft is provided with the vertical slot coordinating with described lockplate, is also provided with the deep-slotted chip breaker coordinating with described release mechanism on described square shaft; In the time that release mechanism matches with the deep-slotted chip breaker of square shaft, vertical slot on square shaft just aligns with lockplate, and release mechanism lockable lockplate is until freedom of entry state simultaneously, and in the time that release mechanism is deviate from the deep-slotted chip breaker of square shaft, vertical slot on square shaft is also staggered with lockplate, and release mechanism can discharge lockplate to free state simultaneously.
In such scheme, release mechanism comprises jam plate, torsion spring, roller; Jam plate hub setting is on described substrate; Described torsion spring set is on the pivot of jam plate, and this torsion spring one end is resisted against on jam plate, and the other end is limited on substrate; On described jam plate, be also provided with the roller coordinating with the deep-slotted chip breaker of described square shaft; The swinging end of described jam plate is provided with public hasp, and corresponding, described lockplate is provided with female hasp.
In such scheme, described drawout chassis comprises two outer panels and an interior plate, described two outer panels specifically one away from the first outer panel of interior plate and with the second outer panel of described interior plate relative engagement; Described screw rod driving device and interlocking locking device are located between the second outer panel and interior plate.
The utility model compared with prior art has following effect:
The utility model can be realized connection, test, separate positive lock and the release of three positions, and structure is also comparatively simple, makes assembling all convenient.
Accompanying drawing explanation
Fig. 1 is the drawout breaker overall structure figure of application the utility model embodiment;
Fig. 2 is the breaker body schematic diagram of application the utility model embodiment;
Fig. 3 is the drawout chassis schematic diagram of application the utility model embodiment;
Fig. 4 is that the drawout chassis of application the utility model embodiment coordinates schematic diagram with breaker body;
Fig. 5 is fanning strip assembly and the screw rod driving device schematic diagram of the utility model embodiment;
Fig. 6 is interlocking locking device and the screw rod driving device schematic diagram of the utility model embodiment;
Fig. 7 is the schematic diagram further marking in detail for the parts in Fig. 6.
In above accompanying drawing: 1, drawout chassis; 11, outer panel; 111, the first outer panel; 112, the second outer panel; 1121, gathering sill; 12, interior plate; 13, base plate; 2, breaker body; 21, body side plate; 211, traction roller; 212, U-shaped bending; 2121, flange; 2122, bending bottom surface; 3, sector plate component; 31, drive link; 32, axis of traction; 33, fanning strip; 331, crank slot; 4, screw rod driving device; 41, slide block; 411, the axis of guide; 412, bar-shaped trough; 42, connecting axle; 43, threaded block; 44, screw mandrel; 441, lock slots; 5, interlocking locking device; 51, substrate; 511, square hole; 52, lockplate; 521, card convex member; 522, half square hole; 5221, card edge; 523, female hasp; 53, release mechanism; 531, jam plate; 5311, public hasp; 532, torsion spring; 533, roller; 54, latch release shaft; 55, extension spring; 56, square shaft; 561, vertical slot; 562, deep-slotted chip breaker; 6, guide rail bar.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: shown in Fig. 1-7:
A kind of drawout breaker drawout chassis transmission and locking mechanism, comprise traction roller 211, sector plate component 3, screw rod driving device 4 and for locking the interlocking locking device 5 of described screw rod driving device 4.
Shown in Fig. 1-4, described drawout breaker comprises breaker body 2 and drawout chassis 1, described drawout chassis 1 comprises two outer panels 11, an interior plate 12 and a base plate 13, described two outer panels 11 specifically one away from the first outer panel 111 of interior plate 12 and with the second outer panel 112 of described interior plate 12 relative engagement.Breaker body 2 comprises the body side plate 21 of both sides.
Shown in Fig. 1-5, described traction roller 211 is located on breaker body 2, and specifically preferably drawing roller 211 is two, symmetrical being based on two body side plates 21.Described sector plate component 3 is located in drawout chassis 1 corresponding to traction roller 211, and sector plate component 3 matches with traction roller 211, and described sector plate component 3 comprises a drive link 31.Described screw rod driving device 4 is located on drawout chassis 1, specifically referring to Fig. 4 and Fig. 5, screw rod driving device 4 comprises slide block 41, connecting axle 42, threaded block 43 and screw mandrel 44, described slide block 41 is provided with the axis of guide 411, this axis of guide 411 embeds drawout chassis 1(specifically on second outer panel 112 and interior plate 12 of drawout chassis 1) gathering sill 1121, be slidably connected with the relative drawout chassis 1 of this slide block 41; Described connecting axle 42 is located in drive link 31, and the corresponding bar-shaped trough 412 coordinating with it that is provided with on described slide block 41; Described threaded block 43 is embedded in slide block 41, and specifically threaded block 43 is provided with protruding axle, and slide block 41 is provided with groove or hole, and the protruding axle on threaded block 43 embeds in the groove or hole of block case 43, and threaded block 43 is positioned on slide block 41, and threaded block 43 cannot be rotated; Threaded block 43 has a tapped through hole, in this tapped through hole, place described screw mandrel 44, screw mandrel 44 and threaded block 43 threaded engagement, and the direction that the length direction of screw mandrel 44 drawout chassis 1 relative to slide block 41 slides is consistent, and screw mandrel 44 rotational support are on drawout chassis 1, rotate and drive slide block 41 to move with this screw mandrel 44, thereby via the bar-shaped trough 412 on slide block 41 and coordinating of connecting axle 42 driving described sector plate component 3, make sector plate component 3 drive traction roller 211, thereby drive breaker body 2 in the interior propelling of drawout chassis 1 or extraction.
Specifically, preferred slide block 41 is a metallic plate bending part, for U-shaped structure, is convenient to processing.
As shown in the figure, described screw rod driving device 4 and interlocking locking device 5 are located between the second outer panel 112 and interior plate 12.
Shown in Fig. 2 and Fig. 3, the below of the both sides of described breaker body 2 is provided with U-shaped bending 212, and this U-shaped bending 212 comprises a flange 2121 and bending bottom surface 2122; The inner corresponding each U-shaped bending 212 of described drawout chassis 1 is all provided with guide rail bar 6, and this guide rail bar 6 coordinates with the flange 2121 of U-shaped bending 212.Thereby when breaker body 2 pushes behind drawout chassis 1 inside, guide rail bar 6 conflict flange 2121, and bending bottom surface 2122 is positioned on the base plate 13 of drawout chassis 1.Arrange by said structure, when breaker body 2 is moved in drawer, rocking before and after can not producing, by guide rail bar 6 balances moment.
Shown in Fig. 4 and Fig. 5, described sector plate component 3 concrete structures are: except comprising a drive link 31, also comprise an axis of traction 32 and two fanning strips 33, described fanning strip 33 is installed on the two ends of axis of traction 32, fanning strip 33 is provided with and the crank slot 331 that draws roller 211 and coordinate, and described drive link 31 is fixed on the end of axis of traction 32.
Shown in Fig. 4 and Fig. 6, described interlocking locking device 5 comprises substrate 51, lockplate 52, release mechanism 53, latch release shaft 54, extension spring 55 and square shaft 56; Described substrate 51 and lockplate 52 are all placed on described screw mandrel 44, the relative drawout chassis 1 of substrate 51 is fixing, and the relative substrate 51 of described lockplate 52 slides, and one end of lockplate 52 coordinates with latch release shaft 54, and the other end connects one end of described extension spring 55, the other end connection substrate 51 of described extension spring 55.Described screw mandrel 44 is provided with lock slots 441, and on described lockplate 52, correspondence is provided with card convex member 521, and this card convex member 521 coordinates with lock slots 441 inlay cards, and the active force of described extension spring 55 forces lockplate 52 to move to make card convex member 521 embed lock slots 441.Described release mechanism 53 is arranged on described substrate 51, and coordinates with described lockplate 52; Described square shaft 56 is parallel with described screw mandrel 44 to be fixedly installed on described slide block 41, and described square shaft 56 one end are fixed on described slide block 41, and the other end is through the square hole 511 on half square hole 522 and the substrate 51 of described lockplate 52; Half square hole 522 tops of described lockplate 52 are provided with card along 5221; Described square shaft 56 is provided with described card along 5221 vertical slots that coordinate 561, is also provided with the deep-slotted chip breaker 562 coordinating with described release mechanism 53 on described square shaft 56.In the time that release mechanism 53 matches with the deep-slotted chip breaker 562 of square shaft 56, vertical slot 561 on square shaft 56 just aligns with lockplate 52, and release mechanism 53 lockable lockplates 52 are to free state simultaneously, and in the time that release mechanism 53 is deviate from the deep-slotted chip breaker 562 of square shaft 56, on square shaft, 56 vertical slot 561 is also staggered with lockplate 52, and release mechanism 53 can discharge lockplate 52 to free state simultaneously.Specifically, vertical slot 561 is corresponding three of being connected, testing, separating three positions with deep-slotted chip breaker 562.
Described release mechanism 53 as shown in Figure 6 and Figure 7, comprises jam plate 531, and jam plate 531 hub settings are on substrate 51, and described jam plate 531 is provided with provides the torsion spring of restoring force 532.Concrete, described torsion spring 532 is enclosed within on the pivot of jam plate 531, and these torsion spring 532 one end are resisted against on jam plate 531, and the other end is limited on substrate 51.The swinging end of described jam plate 531 is provided with public hasp 5311, and corresponding, described lockplate 52 is provided with female hasp 523.Preferably, described public hasp 5311 is a hasp edge, and described female hasp 523 is that a hasp hooks.On described jam plate 531, be also provided with the roller 533 coordinating with the deep-slotted chip breaker 562 of square shaft 56.The torsion spring power that torsion spring 532 provides forces jam plate 531 to rely on square shaft 56, and roller and square shaft 56 are tightly offseted.Above-mentioned male hasp 5311 was specially with coordinating of female hasp 523: when roller 533 is positioned at deep-slotted chip breaker 562, can will on lockplate 52, move to released state by manual operation latch release shaft 54, male hasp 5311 is joined with female hasp 523 cards, lockplate 52 is remained on to released state, but when roller 533 is deviate from deep-slotted chip breaker 562, public hasp 5311 is open, and departs from female hasp 523, and lockplate 52 reverts to free state.
The present embodiment course of work is as follows:
Operator is at circuit breaker peripheral operation circuit breaker, concrete, first breaker body 2 is placed in to drawout chassis 1 opening part, pushes breaker body 2, push put in place after arrive " separation point position ", operator inserts the head of screw mandrel 44 by outer handle, and stir latch release shaft 54 pull-up lockplates 52, the card convex member 521 of lockplate 52 exits lock slots 441, after lockplate 52 moves upward, trigger release mechanism 53 and catch on lockplate 52, make it keep released state.
Operator continues to shake outer handle, drive screw mandrel 44 to rotate, screw mandrel 44 pulls threaded block 43 to move to lockplate 52 directions, and then described slide block 41 moves to lockplate 52 directions, described square shaft 56 is also being followed to lockplate 52 and is being drawn close, and when the vertical slot 561 on it leaves after cooperation position, the release mechanism 53 on it is also deviate from deep-slotted chip breaker 562, throw off lockplate 52 thereby trigger described release mechanism 53, thereby lockplate 52 can carry out next locking.Meanwhile, described slide block 41 drives fanning strip 33 to rotate by drive link 31, pulls breaker body 2 inwardly to move to " test position ".
In the time wanting release, again stir latch release shaft 54, release lockplate 52, releasing process with narrate identically above, no longer endure and state.Swinging handle enters " link position ", and lockplate 52 locks square shaft 56 again, and then has locked slide block 41, has locked the position of breaker body 2.
By reverse above-mentioned process, go through " link position ", " test position ", " separation point position " until breaker body 2 is exited to drawout chassis 1.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (6)
1. the transmission of drawout breaker drawout chassis and a locking mechanism, described drawout breaker comprises breaker body (2) and drawout chassis (1), it is characterized in that: described drawout chassis transmission and locking mechanism comprise traction roller (211), sector plate component (3), screw rod driving device (4) and for locking the interlocking locking device (5) of described screw rod driving device (4), described traction roller (211) is located on breaker body (2), and sector plate component (3) correspondence is located in drawout chassis (1), sector plate component (3) matches with traction roller (211), and described sector plate component (3) comprises a drive link (31), described screw rod driving device (4) is located on drawout chassis (1), specifically comprise slide block (41), connecting axle (42), threaded block (43) and screw mandrel (44), described slide block (41) is provided with the axis of guide (411), this axis of guide (411) embeds the gathering sill (1121) on drawout chassis (1), is slidably connected with the relative drawout chassis (1) of this slide block (41), it is upper that described connecting axle (42) is located at drive link (31), and the upper correspondence of described slide block (41) is provided with the bar-shaped trough (412) coordinating with it, described threaded block (43) is embedded in slide block (41), threaded block (43) has a tapped through hole, in this tapped through hole, place described screw mandrel (44), screw mandrel (44) and threaded block (43) threaded engagement, and the length direction of screw mandrel (44) is consistent with the direction that the relative drawout chassis of slide block (41) (1) slides, and screw mandrel (44) rotational support is on drawout chassis (1), rotating band movable slider (41) with this screw mandrel (44) moves, thereby via the bar-shaped trough (412) on slide block (41) and coordinating of connecting axle (42) driving described sector plate component (3), make sector plate component (3) drive traction roller (211), thereby drive breaker body (2) in drawout chassis (1), advance or extract out.
2. the transmission of drawout breaker drawout chassis and locking mechanism according to claim 1, it is characterized in that: the below of the both sides of described breaker body (2) is provided with U-shaped bending (212), this U-shaped bending (212) comprises a flange (2121) and bending bottom surface (2122); The inner corresponding each U-shaped bending of described drawout chassis (1) (212) is all provided with guide rail bar (6), and this guide rail bar (6) coordinates with the flange (2121) of U-shaped bending (212).
3. the transmission of drawout breaker drawout chassis and locking mechanism according to claim 1, it is characterized in that: described sector plate component (3) also comprises an axis of traction (32) and two fanning strips (33), described fanning strip (33) is installed on the two ends of axis of traction (32), fanning strip (33) is provided with and the crank slot (331) that draws roller (211) and coordinate, and described drive link (31) is fixed on the end of axis of traction (32).
4. the transmission of drawout breaker drawout chassis and locking mechanism according to claim 1, is characterized in that: described interlocking locking device (5) comprises substrate (51), lockplate (52), release mechanism (53), latch release shaft (54), extension spring (55) and square shaft (56); Described substrate (51) and lockplate (52) are all placed on described screw mandrel (44), substrate (51) relatively drawout chassis (1) is fixing, described lockplate (52) relatively substrate (51) slides, one end of lockplate (52) coordinates with latch release shaft (54), and the other end connects one end of described extension spring (55), the other end connection substrate (51) of described extension spring (55); Described screw mandrel (44) is provided with lock slots (441), and the upper correspondence of described lockplate (52) is provided with card convex member (521), this card convex member (521) coordinates with lock slots (441) inlay card, and the active force of described extension spring (55) forces the mobile card convex member (521) that makes of lockplate (52) to embed lock slots (441); It is upper that described release mechanism (53) is arranged on described substrate (51), and coordinate with described lockplate (52); Described square shaft (56) is parallel with described screw mandrel (44) is fixedly installed on described slide block (41) above, and square shaft (56) is through described substrate (51) and lockplate (52); Described square shaft (56) is provided with the vertical slot (561) coordinating with described lockplate (52), is also provided with the deep-slotted chip breaker (562) coordinating with described release mechanism (53) on described square shaft (56); In the time that release mechanism (53) matches with the deep-slotted chip breaker (562) of square shaft (56), vertical slot (561) on square shaft (56) just aligns with lockplate (52), and release mechanism (53) lockable lockplate (52) is until freedom of entry state simultaneously, and in the time that release mechanism (53) is deviate from the deep-slotted chip breaker (562) of square shaft (56), on square shaft, the vertical slot of (56) (561) is also staggered with lockplate (52), and release mechanism (53) can discharge lockplate (52) to free state simultaneously.
5. the transmission of drawout breaker drawout chassis and locking mechanism according to claim 4, is characterized in that: release mechanism (53) comprises jam plate (531), torsion spring (532), roller (533); Jam plate (531) hub setting is on described substrate (51); Described torsion spring (532) is enclosed within on the pivot of jam plate (531), and it is upper that this torsion spring (532) one end is resisted against jam plate (531), and the other end is limited on substrate (51); On described jam plate (531), be also provided with the roller (533) coordinating with the deep-slotted chip breaker (562) of described square shaft (56); The swinging end of described jam plate (531) is provided with public hasp (5311), and corresponding, described lockplate (52) is provided with female hasp (523).
6. the transmission of drawout breaker drawout chassis and locking mechanism according to claim 1, it is characterized in that: described drawout chassis (1) comprises two outer panels (11) and an interior plate (12), described two outer panels (11) specifically one away from first outer panel (111) of interior plate (12) and with second outer panel (112) of described interior plate (12) relative engagement; Described screw rod driving device (4) and interlocking locking device (5) are located between the second outer panel (112) and interior plate (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874576.1U CN203690773U (en) | 2013-12-27 | 2013-12-27 | Drawer transmission and locking mechanism of drawout type circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320874576.1U CN203690773U (en) | 2013-12-27 | 2013-12-27 | Drawer transmission and locking mechanism of drawout type circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690773U true CN203690773U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320874576.1U Expired - Lifetime CN203690773U (en) | 2013-12-27 | 2013-12-27 | Drawer transmission and locking mechanism of drawout type circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203690773U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956666A (en) * | 2014-05-19 | 2014-07-30 | 慈溪奇国电器有限公司 | Boosting propulsion and error-proofing interlocking mechanism of split structure type drawer device |
| CN109713604A (en) * | 2017-10-25 | 2019-05-03 | 常熟开关制造有限公司(原常熟开关厂） | A kind of circuit breaker drawer base |
| CN110071452A (en) * | 2019-05-24 | 2019-07-30 | 辽宁电能发展股份有限公司 | A kind of low pressure draw-out type breaker |
-
2013
- 2013-12-27 CN CN201320874576.1U patent/CN203690773U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956666A (en) * | 2014-05-19 | 2014-07-30 | 慈溪奇国电器有限公司 | Boosting propulsion and error-proofing interlocking mechanism of split structure type drawer device |
| CN103956666B (en) * | 2014-05-19 | 2016-02-17 | 慈溪奇国电器有限公司 | The reinforcement of Split type structure formula drawer advances and misoperation-prevent interlocking mechanism |
| CN109713604A (en) * | 2017-10-25 | 2019-05-03 | 常熟开关制造有限公司(原常熟开关厂） | A kind of circuit breaker drawer base |
| CN110071452A (en) * | 2019-05-24 | 2019-07-30 | 辽宁电能发展股份有限公司 | A kind of low pressure draw-out type breaker |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140702 |