CN114156811B - Error-proofing interlocking device for bus connector box of data center - Google Patents
Error-proofing interlocking device for bus connector box of data center Download PDFInfo
- Publication number
- CN114156811B CN114156811B CN202111381754.2A CN202111381754A CN114156811B CN 114156811 B CN114156811 B CN 114156811B CN 202111381754 A CN202111381754 A CN 202111381754A CN 114156811 B CN114156811 B CN 114156811B
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- Prior art keywords
- block
- data center
- bus
- terminal block
- plug
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2464—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point
- H01R13/2471—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point pin shaped
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/08—Connection boxes therefor
Abstract
The invention discloses an error-proof interlocking device of a bus connector box of a data center, which belongs to the technical field of data centers and comprises a connector box, wherein the upper end of the connector box is provided with a pin, and the upper end of the pin is provided with a bus; the bus comprises a grounding port, copper bars, a large bottom edge, pin accommodating cavities, a small bottom edge and fixing bumps, wherein the copper bars are arranged on two sides of the interior of the bus, the grounding port is arranged on the upper end of the interior of the bus, the large bottom edge and the small bottom edge are respectively arranged at the bottoms of two inner side faces of the bus.
Description
Technical Field
The invention belongs to the technical field of data centers, and particularly relates to an error-proofing interlocking device for a bus connector of a data center.
Background
Data centers are globally coordinated, specific equipment networks used to communicate, accelerate, display, calculate, store data information over an internet network infrastructure. In future developments, data centers will also become the competitive asset for enterprises, and business models will change accordingly. With the widespread application of data centers, artificial intelligence, network security, etc. have also continued to appear, and more users have been brought into the application of networks and mobile phones. With the increase of computers and data volume, people can also improve their own capacity through continuous learning accumulation, and the method is an important mark for the information age.
The Chinese patent application number 201821083432.3 discloses a special error-proof associated lock device for a data center, which comprises the following components in use: the side elastic plug-in terminals are connected with the copper bars in a contact manner, so that the problem of poor contact exists, and the use is inconvenient; meanwhile, the elastic plug-in terminal at the top has poor contact and potential safety hazard when being used for a long time.
Disclosure of Invention
To solve the problems set forth in the background art. The invention provides an error-proof interlocking device for a bus connector box of a data center, which has the characteristics of firm contact, difficult falling and good long-time contact.
In order to achieve the above purpose, the present invention provides the following technical solutions: the error-proof interlocking device for the bus connector box of the data center comprises a connector box, wherein the upper end of the connector box is provided with pins, and the upper end of each pin is provided with a bus;
the bus comprises a grounding port, copper bars, a large bottom edge, a pin accommodating cavity, a small bottom edge and fixing convex blocks, wherein the copper bars are arranged on two sides of the interior of the bus, the grounding port is arranged at the upper end of the interior of the bus, the large bottom edge and the small bottom edge are respectively arranged at the bottoms of two inner side surfaces of the bus, the pin accommodating cavity is arranged in the middle of the bus, and the fixing convex blocks are arranged on the side edges of the copper bars;
the pin comprises a top elastic plug terminal, a side elastic plug terminal and a shell, wherein the top elastic plug terminal is arranged at the upper end of the shell, and the side elastic plug terminals are arranged at the upper end and the lower end of the two sides of the shell;
the side elastic plug terminal comprises a U-shaped groove, a clamping groove, a side plug terminal block, a sliding groove and a reset spring, wherein the sliding groove is formed in the side edge of the shell, the side plug terminal block is arranged in the sliding groove, the reset spring is arranged between the side edge of the side plug terminal block and the inside of the sliding groove, the U-shaped groove is formed in the side edge of the side plug terminal block, and the clamping groove is formed in the middle of the U-shaped groove.
Preferably, limiting blocks are arranged at two ends of the side plug-in terminal block, and the limiting blocks are attached to the inner wall of the sliding groove.
Preferably, the side edge of the side plug terminal block is provided with an arc-shaped structure, and the clamping groove corresponds to the fixing lug in size.
Preferably, the buckling parts of the copper bars and the side plug-in terminal blocks are deformable.
Preferably, the side edge of the side plug terminal block is connected with a connecting wire, and a through hole for sliding the connecting wire is arranged in the middle of the side edge of the sliding groove.
Preferably, the top elasticity grafting terminal includes top grafting terminal block, sliding plate, shell, clamp splice, telescopic rubber piece and fixed block, wherein, the centre of shell is provided with telescopic rubber piece, the upper end of telescopic rubber piece is provided with the sliding plate, the upper end of sliding plate is provided with top grafting terminal block, the inside of shell is provided with the clamp splice all around, the side of telescopic rubber piece is provided with the fixed block.
Preferably, the inside of telescopic rubber piece is cellular structure, the fixed block of telescopic rubber piece side is fixed in the clamp splice.
Preferably, a buffer spring is arranged between the bottom of the shell and the telescopic rubber block, and the buffer spring is in a compressed state.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the side elastic plug-in terminal is rotationally clamped into the copper bar by screwing, the side edge of the side plug-in terminal block is attached to the surface of the copper bar, the fixing lug penetrates through the U-shaped groove to be clamped into the clamping groove, so that the side plug-in terminal block is attached to the copper bar, the side plug-in terminal block is clamped with the fixing lug, the side plug-in terminal block is firmly contacted with the copper bar, the side plug-in terminal block is not easy to loosen, and the contact stability is improved;
2. according to the invention, the top elastic plug terminal is contacted with the grounding port, the top plug terminal block is contacted with the surface of the grounding port, the top plug terminal block is extruded to move downwards, the sliding plate moves downwards, the telescopic rubber block at the lower end of the sliding plate is extruded to be compressed and deformed, the telescopic rubber block is used for a long time, the fixed block is separated from the clamping block, the buffer spring is rebounded, the buffer spring pushes the telescopic rubber block to move the sliding plate, the telescopic of the top plug terminal block is continuously realized, the contact stability is ensured, the service life is prolonged, and the potential safety hazard is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a bus structure of the present invention;
FIG. 3 is a top view of a copper bar of the present invention;
FIG. 4 is a schematic diagram of a pin structure according to the present invention;
FIG. 5 is a cross-sectional view of a side spring plug terminal of the present invention;
FIG. 6 is a cross-sectional view of a top spring plug terminal of the present invention;
in the figure: 1. a jack box; 2. a bus; 21. a ground port; 22. a copper bar; 23. a large bottom edge; 24. a pin receiving cavity; 25. a small bottom edge; 26. a fixing bump; 3. pins; 31. a top elastic plug terminal; 311. a top plug terminal block; 312. a sliding plate; 313. a housing; 314. clamping blocks; 315. a telescopic rubber block; 316. a buffer spring; 317. a fixed block; 32. a side elastic plug-in terminal; 321. a U-shaped groove; 322. a clamping groove; 323. a side plug terminal block; 324. a limiting block; 325. a chute; 326. connecting wires; 327. a return spring; 33. a housing.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-6, the present invention provides the following technical solutions: the utility model provides a data center busbar joint plug box mistake proofing interlock, includes jack box 1, and the upper end of jack box 1 is provided with participating in 3, and the upper end of participating in 3 is provided with busbar 2;
the bus 2 comprises a grounding port 21, copper bars 22, a large bottom edge 23, a pin accommodating cavity 24, a small bottom edge 25 and a fixing lug 26, wherein the copper bars 22 are arranged on two sides of the interior of the bus 2, the grounding port 21 is arranged at the upper end of the interior of the bus 2, the large bottom edge 23 and the small bottom edge 25 are respectively arranged at the bottoms of two inner side surfaces of the bus 2, the pin accommodating cavity 24 is arranged in the middle of the bus 2, and the fixing lug 26 is arranged on the side edge of the copper bar 22;
the pin 3 comprises a top elastic plug terminal 31, side elastic plug terminals 32 and a shell 33, wherein the top elastic plug terminal 31 is arranged at the upper end of the shell 33, and the side elastic plug terminals 32 are arranged at the upper end and the lower end of the two sides of the shell 33;
the side elastic plug terminal 32 comprises a U-shaped groove 321, a clamping groove 322, a side plug terminal block 323, a sliding groove 325 and a return spring 327, wherein the sliding groove 325 is arranged on the side edge of the shell 33, the side plug terminal block 323 is arranged in the sliding groove 325, the return spring 327 is arranged between the side edge of the side plug terminal block 323 and the inside of the sliding groove 325, the U-shaped groove 321 is arranged on the side edge of the side plug terminal block 323, and the clamping groove 322 is arranged in the middle of the U-shaped groove 321.
Specifically, two ends of the side plug terminal block 323 are provided with limiting blocks 324, the limiting blocks 324 are attached to the inner wall of the sliding groove 325,
by adopting the technical scheme, the side plug terminal block 323 is ensured to stably slide in the sliding groove 325 and not to easily fall off.
Specifically, the side edges of the side plug-in terminal blocks 323 are arranged in an arc-shaped structure, the clamping grooves 322 correspond to the fixing convex blocks 26 in size,
by adopting the technical scheme, the side plug terminal block 323 can be conveniently rotated, and the clamping groove 322 is firmly clamped with the fixing convex block 26.
Specifically, the buckling parts of the copper bars 22 and the side plug terminal blocks 323 can be deformed,
by adopting the technical scheme, the fixing lug 26 is ensured to be clamped into the clamping groove 322.
Specifically, the side edge of the side plug terminal block 323 is connected with a connecting wire 326, a through hole for sliding the connecting wire 326 is arranged in the middle of the side edge of the sliding chute 325,
by adopting the above technical scheme, the side plug terminal block 323 can be electrified when moving conveniently.
When the plug pin 3 is used, the plug pin 3 is inserted into the bus bar 2, the side elastic plug terminal 32 is rotationally clamped into the copper bar 22 by screwing, the side edge of the side plug terminal block 323 is attached to the surface of the copper bar 22, the fixing lug 26 passes through the U-shaped groove 321 and is clamped into the clamping groove 322, the side plug terminal block 323 is attached to the copper bar 22, the side plug terminal block 323 is clamped with the fixing lug 26, the side plug terminal block 323 is firmly contacted with the copper bar 22, looseness is not easy to occur, the contact stability is improved, and the plug pin is portable to use;
example 2
This embodiment differs from embodiment 1 in that: the top elastic plug terminal 31 comprises a top plug terminal block 311, a sliding plate 312, a housing 313, a clamping block 314, a telescopic rubber block 315 and a fixed block 317, wherein the middle of the housing 313 is provided with the telescopic rubber block 315, the upper end of the telescopic rubber block 315 is provided with the sliding plate 312, the upper end of the sliding plate 312 is provided with the top plug terminal block 311, the periphery of the inner part of the housing 313 is provided with the clamping block 314, the side edge of the telescopic rubber block 315 is provided with the fixed block 317,
by adopting the above technical scheme, the top plug terminal block 311 is ensured to slide in the housing 313.
Specifically, the inside of the telescopic rubber block 315 is in a honeycomb structure, the fixing blocks 317 at the side edges of the telescopic rubber block 315 are clamped and fixed in the clamping blocks 314,
through adopting above-mentioned technical scheme, cellular structure's telescopic rubber piece 315 can deform, and convenient flexible buffering, fixed block 317 block is fixed in clamp splice 314, makes telescopic rubber piece 315 fixed.
Specifically, a buffer spring 316 is disposed between the bottom of the housing 313 and the telescopic rubber block 315, the buffer spring 316 is in a compressed state,
through adopting above-mentioned technical scheme, telescopic rubber block 315 ages, makes fixed block 317 break away from clamp block 314, makes buffer spring 316 kick-back, and buffer spring 316 pushes up telescopic rubber block 315 and makes slide plate 312 remove, continues to realize pushing up the flexible of grafting terminal block 311, guarantees the contact stability.
When the plug pin 3 is used in the embodiment, the plug pin 3 is inserted into the bus 2, the top elastic plug terminal 31 is in contact with the grounding port 21, the top plug terminal block 311 is in contact with the surface of the grounding port 21, the top plug terminal block 311 is extruded to move downwards, the sliding plate 312 is moved downwards, the telescopic rubber block 315 at the lower end of the sliding plate 312 is extruded to compress and deform, the telescopic rubber block 315 is aged for a long time, the fixed block 317 is separated from the clamping block 314, the buffer spring 316 is rebounded, the buffer spring 316 pushes the telescopic rubber block 315 to move the sliding plate 312, the expansion and the contraction of the top plug terminal block 311 are continuously realized, the contact stability is ensured, the service life is prolonged, and the potential safety hazard is reduced.
The structure and the use principle of the jack box 1 in the invention are disclosed in a special error-proof interlocking lock device for a data center disclosed in China patent application No. 201821083432.3.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a data center busbar joint subrack mistake proofing interlock, includes jack box (1), its characterized in that: the upper end of the plug box (1) is provided with a pin (3), and the upper end of the pin (3) is provided with a bus (2);
the bus (2) comprises a grounding port (21), copper bars (22), a large bottom edge (23), a pin accommodating cavity (24), a small bottom edge (25) and fixing convex blocks (26), wherein the copper bars (22) are arranged on two sides of the interior of the bus (2), the grounding port (21) is arranged at the upper end of the interior of the bus (2), the large bottom edge (23) and the small bottom edge (25) are respectively arranged at the bottoms of two inner side surfaces of the bus (2), the pin accommodating cavity (24) is arranged in the middle of the bus (2), and the fixing convex blocks (26) are arranged on the side edges of the copper bars (22);
the pin (3) comprises a top elastic plug terminal (31), a side elastic plug terminal (32) and a shell (33), wherein the top elastic plug terminal (31) is arranged at the upper end of the shell (33), and the side elastic plug terminals (32) are arranged at the upper end and the lower end of the two sides of the shell (33);
side elasticity grafting terminal (32) include U type groove (321), draw-in groove (322), side grafting terminal block (323), spout (325) and reset spring (327), wherein, the side of casing (33) is provided with spout (325), the inside of spout (325) is provided with side grafting terminal block (323), be provided with reset spring (327) between the side of side grafting terminal block (323) and the inside of spout (325), the side of side grafting terminal block (323) is provided with U type groove (321), the centre of U type groove (321) is provided with draw-in groove (322), draw-in groove (322) correspond with fixed lug (26) size.
2. The data center bus bar connector error proofing interlock device according to claim 1, wherein: limiting blocks (324) are arranged at two ends of the side plug-in terminal block (323), and the limiting blocks (324) are attached to the inner wall of the sliding groove (325).
3. The data center bus bar connector error proofing interlock device according to claim 1, wherein: the side edges of the side plug-in terminal blocks (323) are arranged to be arc-shaped structures.
4. The data center bus bar connector error proofing interlock device according to claim 1, wherein: the buckling parts of the copper bars (22) and the side plug-in terminal blocks (323) can be deformed.
5. The data center bus bar connector error proofing interlock device according to claim 1, wherein: the side edge of the side plug-in terminal block (323) is connected with a connecting wire (326), and a through hole for sliding the connecting wire (326) is arranged in the middle of the side edge of the sliding groove (325).
6. The data center bus bar connector error proofing interlock device according to claim 1, wherein: the top elasticity grafting terminal (31) is including top grafting terminal block (311), sliding plate (312), shell (313), clamp splice (314), telescopic rubber piece (315) and fixed block (317), wherein, the centre of shell (313) is provided with telescopic rubber piece (315), the upper end of telescopic rubber piece (315) is provided with sliding plate (312), the upper end of sliding plate (312) is provided with top grafting terminal block (311), the inside of shell (313) is provided with clamp splice (314) all around, the side of telescopic rubber piece (315) is provided with fixed block (317).
7. The data center bus bar connector error proofing interlock of claim 6 wherein: the inside of telescopic rubber piece (315) is cellular structure, fixed block (317) block of telescopic rubber piece (315) side block joint is fixed in clamp splice (314).
8. The data center bus bar connector error proofing interlock of claim 6 wherein: a buffer spring (316) is arranged between the bottom of the shell (313) and the telescopic rubber block (315), and the buffer spring (316) is in a compressed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111381754.2A CN114156811B (en) | 2021-11-22 | 2021-11-22 | Error-proofing interlocking device for bus connector box of data center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111381754.2A CN114156811B (en) | 2021-11-22 | 2021-11-22 | Error-proofing interlocking device for bus connector box of data center |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114156811A CN114156811A (en) | 2022-03-08 |
| CN114156811B true CN114156811B (en) | 2023-10-03 |
Family
ID=80456924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111381754.2A Active CN114156811B (en) | 2021-11-22 | 2021-11-22 | Error-proofing interlocking device for bus connector box of data center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114156811B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5817977A (en) * | 1995-03-28 | 1998-10-06 | Rittal-Werk Rudolf Loh Gmbh & Co. Kg | Busbar system |
| US7537494B1 (en) * | 2008-04-14 | 2009-05-26 | 3M Innovative Properties Company | Electrical connector with cantilever arm |
| CN106450980A (en) * | 2015-08-04 | 2017-02-22 | 深圳市振勤电子科技有限公司 | Novel bus duct and electricity utilization plug |
| CN107800091A (en) * | 2017-12-08 | 2018-03-13 | 北京国电恒嘉科贸有限公司 | Bus duct |
| CN108899672A (en) * | 2018-07-10 | 2018-11-27 | 镇江加勒智慧电力科技股份有限公司 | A kind of data center's plugging box special |
| CN111021357A (en) * | 2018-10-10 | 2020-04-17 | 丰县鑫耀机械制造有限公司 | Spacing operation device for ditcher |
| CN211879674U (en) * | 2020-04-27 | 2020-11-06 | 苏州市世连电子科技有限公司 | Tin-feeding-preventing female header connector |
| CN212518309U (en) * | 2020-07-15 | 2021-02-09 | 重庆联控电气有限公司 | Safe energy-saving bus duct |
| CN214100754U (en) * | 2020-08-05 | 2021-08-31 | 镇江西格玛电气有限公司 | High bus grafting device of security |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11837824B2 (en) * | 2015-06-17 | 2023-12-05 | Busway Solutions, LLC | Systems, methods, and apparatus useful for busway power distribution |
-
2021
- 2021-11-22 CN CN202111381754.2A patent/CN114156811B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5817977A (en) * | 1995-03-28 | 1998-10-06 | Rittal-Werk Rudolf Loh Gmbh & Co. Kg | Busbar system |
| US7537494B1 (en) * | 2008-04-14 | 2009-05-26 | 3M Innovative Properties Company | Electrical connector with cantilever arm |
| CN106450980A (en) * | 2015-08-04 | 2017-02-22 | 深圳市振勤电子科技有限公司 | Novel bus duct and electricity utilization plug |
| CN107800091A (en) * | 2017-12-08 | 2018-03-13 | 北京国电恒嘉科贸有限公司 | Bus duct |
| CN108899672A (en) * | 2018-07-10 | 2018-11-27 | 镇江加勒智慧电力科技股份有限公司 | A kind of data center's plugging box special |
| CN111021357A (en) * | 2018-10-10 | 2020-04-17 | 丰县鑫耀机械制造有限公司 | Spacing operation device for ditcher |
| CN211879674U (en) * | 2020-04-27 | 2020-11-06 | 苏州市世连电子科技有限公司 | Tin-feeding-preventing female header connector |
| CN212518309U (en) * | 2020-07-15 | 2021-02-09 | 重庆联控电气有限公司 | Safe energy-saving bus duct |
| CN214100754U (en) * | 2020-08-05 | 2021-08-31 | 镇江西格玛电气有限公司 | High bus grafting device of security |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114156811A (en) | 2022-03-08 |
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