CN114156811A - Data center bus connects subrack mistake proofing interlock - Google Patents
Data center bus connects subrack mistake proofing interlock Download PDFInfo
- Publication number
- CN114156811A CN114156811A CN202111381754.2A CN202111381754A CN114156811A CN 114156811 A CN114156811 A CN 114156811A CN 202111381754 A CN202111381754 A CN 202111381754A CN 114156811 A CN114156811 A CN 114156811A
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- CN
- China
- Prior art keywords
- plug
- block
- bus
- data center
- terminal block
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
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- 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 a fault-proof interlocking device for a data center bus-bar connection plug box, which belongs to the technical field of data centers and comprises a plug box, wherein the upper end of the plug box is provided with a plug pin, and the upper end of the plug 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 a fixing lug, wherein the copper bars are arranged on two sides in the bus, the grounding port is arranged at the upper end in the bus, and the large bottom edge and the small bottom edge are respectively arranged at the bottoms of two inner side surfaces of the bus.
Description
Technical Field
The invention belongs to the technical field of data centers, and particularly relates to a fault-proof interlocking device for a bus connection and plug box of a data center.
Background
A data center is a globally collaborative network of devices that is used to deliver, accelerate, present, compute, store data information over the internet network infrastructure. In future development, data centers will become competitive assets for enterprises, and business models will change accordingly. With the popularization of data center applications, artificial intelligence, network security and the like are also appeared in succession, and more users are brought into the applications of networks and mobile phones. With the increase of computers and data volume, people can also improve the self ability by continuously learning and accumulating, and the method is an important mark advancing to the information age.
Chinese patent application No. 201821083432.3 discloses a data center dedicated error-proof associated lock device, which exists when in use: the side elastic plug terminals are in contact with the copper bars for connection, so that the problem of poor contact exists, and the use is inconvenient; meanwhile, the top elastic plug terminal is poor in contact and has potential safety hazard when used for a long time.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a mistake-proofing interlocking device for a bus connection and plug box of a data center, which has the characteristics of firm contact, difficulty in falling and good long-time contact.
In order to achieve the purpose, the invention provides the following technical scheme: a fault-proof interlocking device for a data center bus connection and plug box comprises a plug box, wherein plug pins are arranged at the upper end of the plug box, and buses are arranged at the upper ends of the plug pins;
the bus comprises a grounding port, copper bars, a large bottom edge, a pin accommodating cavity, a small bottom edge and a fixing lug, wherein the copper bars are arranged on two sides of the inside of the bus, the grounding port is arranged at the upper end of the inside 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 lug is arranged on the side edge of the copper bar;
the plug pins comprise top elastic plug terminals, side elastic plug terminals and a shell, wherein the top elastic plug terminals are 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 two sides of the shell;
the side elastic plug-in terminal comprises a U-shaped groove, a clamping groove, a side plug-in terminal block, a sliding groove and a reset spring, wherein the sliding groove is formed in the side of the shell, the side plug-in terminal block is arranged inside the sliding groove, the reset spring is arranged between the side of the side plug-in terminal block and the inside of the sliding groove, the U-shaped groove is formed in the side of the side plug-in terminal block, and the clamping groove is formed in the middle of the U-shaped groove.
Preferably, the two ends of the side plug-in terminal block are provided with limit blocks, and the limit blocks are attached to the inner wall of the sliding groove.
Preferably, the side edge of the side plug-in terminal block is of an arc structure, and the clamping groove corresponds to the fixed lug in size.
Preferably, the buckling parts of the copper bar and the side plug-in terminal block can be deformed.
Preferably, the side edge of the side plug-in terminal block is connected with a connecting wire, and a through hole through which the connecting wire slides is formed in the middle of the side edge of the sliding groove.
Preferably, the top elastic plug-in terminal comprises a top plug-in terminal block, a sliding plate, a shell, a clamping block, a telescopic rubber block and a fixed block, wherein the telescopic rubber block is arranged in the middle of the shell, the sliding plate is arranged at the upper end of the telescopic rubber block, the top plug-in terminal block is arranged at the upper end of the sliding plate, the clamping block is arranged around the inside of the shell, and the fixed block is arranged on the side edge of the telescopic rubber block.
Preferably, the inside of telescopic rubber block is cellular structure, the fixed block of telescopic rubber block 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 rotated and 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 passes through the U-shaped groove and is clamped into the clamping groove, so that the side plug-in terminal block is attached to the copper bar, and the side plug-in terminal block is clamped with the fixing lug, so that the side plug-in terminal block is firmly contacted with the copper bar, is not easy to loosen, and improves the contact stability;
2. according to the invention, the top elastic plug terminal is contacted with the ground port, the top plug terminal block is contacted with the surface of the ground port, the top plug terminal block is extruded to move downwards, so that the sliding plate moves downwards, the telescopic rubber block at the lower end of the sliding plate is extruded and compressed to deform, and after long-time use, the telescopic rubber block is aged, so that 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 stable contact is ensured, the service life is prolonged, and the potential safety hazard is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a bus bar structure according to the present invention;
FIG. 3 is a top view of the copper bar of the present invention;
FIG. 4 is a schematic view of a pin configuration of the present invention;
FIG. 5 is a cross-sectional view of a side resilient plug terminal of the present invention;
FIG. 6 is a cross-sectional view of a top resilient plug terminal of the present invention;
in the figure: 1. a jack box; 2. a bus bar; 21. a ground port; 22. copper bars; 23. a large bottom edge; 24. a pin accommodating cavity; 25. a small bottom edge; 26. fixing the bump; 3. a pin; 31. a top elastic plug terminal; 311. inserting a terminal block; 312. a sliding plate; 313. a housing; 314. a clamping block; 315. a telescopic rubber block; 316. a buffer spring; 317. a fixed block; 32. a side elastic plug terminal; 321. a U-shaped groove; 322. a card slot; 323. side plug-in terminal blocks; 324. a limiting block; 325. a chute; 326. connecting a lead; 327. a return spring; 33. a housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-6, the present invention provides the following technical solutions: a data center bus connection and plug box mistake-proofing interlocking device comprises a plug box 1, wherein the upper end of the plug box 1 is provided with a plug pin 3, and the upper end of the plug pin 3 is provided with a bus 2;
the bus 2 comprises a grounding port 21, a copper bar 22, a large bottom edge 23, a pin accommodating cavity 24, a small bottom edge 25 and a fixing lug 26, wherein the copper bar 22 is arranged on two sides inside the bus 2, the grounding port 21 is arranged at the upper end inside 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, 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 two sides of the shell 33;
the side elastic plug terminal 32 includes a U-shaped groove 321, a slot 322, a side plug terminal block 323, a sliding groove 325, and a return spring 327, wherein the side of the housing 33 is provided with the sliding groove 325, the inside of the sliding groove 325 is provided with the side plug terminal block 323, the return spring 327 is provided between the side of the side plug terminal block 323 and the inside of the sliding groove 325, the side of the side plug terminal block 323 is provided with the U-shaped groove 321, and the middle of the U-shaped groove 321 is provided with the slot 322.
Specifically, two ends of the side plug-in terminal block 323 are provided with a limit block 324, the limit block 324 is attached to the inner wall of the sliding groove 325,
by adopting the technical scheme, the side plug-in terminal block 323 can be ensured to stably slide in the sliding groove 325 and is not easy to fall off.
Specifically, the side edge of the side plug-in terminal block 323 is set to be an arc structure, the slot 322 corresponds to the fixed lug 26 in size,
by adopting the technical scheme, the side plug-in terminal block 323 can rotate conveniently, and the clamping groove 322 is firmly clamped with the fixed lug 26.
Specifically, the buckling part of the copper bar 22 and the side plug-in terminal block 323 can be deformed,
by adopting the above technical scheme, it is ensured that the fixing projection 26 is clamped into the clamping groove 322.
Specifically, the side edge of the side plug-in terminal block 323 is connected with a connecting wire 326, a through hole for the sliding of the connecting wire 326 is arranged in the middle of the side edge of the sliding groove 325,
by adopting the technical scheme, the side plug-in terminal block 323 can be electrified when moving conveniently.
When the connector is used, the pin 3 is inserted into the bus bar 2, the side elastic plug terminal 32 is rotated and 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 bump 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 bump 26, and the side plug terminal block 323 is firmly contacted with the copper bar 22 and is not easy to loosen, so that the contact stability is improved, and the connector is portable;
example 2
The present embodiment is different from embodiment 1 in that: the top elastic plug terminal 31 comprises a top plug terminal block 311, a sliding plate 312, a shell 313, a clamping block 314, a telescopic rubber block 315 and a fixed block 317, wherein the middle of the shell 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 inside the shell 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-in terminal block 311 is ensured to slide in the housing 313.
Specifically, the inside of the telescopic rubber block 315 is a honeycomb structure, the fixing block 317 at the side of the telescopic rubber block 315 is fixed in the clamping block 314 in a clamping manner,
through adopting above-mentioned technical scheme, honeycomb structure's telescopic rubber piece 315 can deform, convenient flexible buffering, and fixed block 317 block is fixed in clamp splice 314, makes telescopic rubber piece 315 fixed.
Specifically, a buffer spring 316 is arranged between the bottom of the outer shell 313 and the telescopic rubber block 315, the buffer spring 316 is in a compressed state,
by adopting the technical scheme, the telescopic rubber block 315 is aged, the fixing 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 telescopic effect of pushing the plug-in terminal block 311 is continuously realized, and the stable contact is ensured.
When the bus bar is used in the embodiment, the pin 3 is inserted into the bus bar 2, the top elastic plug terminal 31 is in contact with the ground port 21, the top plug terminal block 311 is in contact with the surface of the ground port 21, the top plug terminal block 311 is extruded to move downwards, the sliding plate 312 moves downwards, the telescopic rubber block 315 at the lower end of the sliding plate 312 is extruded, compressed and deformed, the telescopic rubber block 315 is used for a long time, the telescopic rubber block 315 is aged, the fixing block 317 is separated from the clamping block 314, the buffer spring 316 rebounds, the buffer spring 316 pushes the telescopic rubber block 315 to move the sliding plate 312, the stretching of the top plug terminal block 311 is 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 of the invention are disclosed in Chinese patent application No. 201821083432.3, and a special mistake-proof interlocking device for a data center is disclosed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 generating line meets jack box mistake proofing interlock, includes jack box (1), its characterized in that: the upper end of the plug box (1) is provided with a plug pin (3), and the upper end of the plug pin (3) is provided with a bus (2);
the bus (2) comprises a grounding port (21), a copper bar (22), a large bottom edge (23), a pin accommodating cavity (24), a small bottom edge (25) and a fixing lug (26), wherein the copper bar (22) is arranged on two sides of the inside of the bus (2), the grounding port (21) is arranged at the upper end of the inside 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 one side edge of the copper bar (22);
the plug pins (3) comprise top elastic plug terminals (31), side elastic plug terminals (32) and a shell (33), wherein the top elastic plug terminals (31) are 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 two sides of the shell (33);
the side elastic plug-in terminal (32) comprises a U-shaped groove (321), a clamping groove (322), a side plug-in terminal block (323), a sliding groove (325) and a return spring (327), wherein the sliding groove (325) is formed in the side of the shell (33), the side plug-in terminal block (323) is arranged in the sliding groove (325), the return spring (327) is arranged between the side of the side plug-in terminal block (323) and the inside of the sliding groove (325), the U-shaped groove (321) is formed in the side of the side plug-in terminal block (323), and the clamping groove (322) is formed in the middle of the U-shaped groove (321).
2. The data center busway junction box error proofing interlock of claim 1, wherein: the two ends of the side plug-in terminal block (323) are provided with limit blocks (324), and the limit blocks (324) are attached to the inner wall of the sliding groove (325).
3. The data center busway junction box error proofing interlock of claim 1, wherein: the side edge of the side plug-in terminal block (323) is arranged to be of an arc-shaped structure, and the clamping groove (322) corresponds to the size of the fixed lug (26).
4. The data center busway junction box error proofing interlock of claim 1, wherein: the buckling parts of the copper bar (22) and the side plug-in terminal block (323) can be deformed.
5. The data center busway junction box error proofing interlock of 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 through which the connecting wire (326) slides is arranged in the middle of the side edge of the sliding groove (325).
6. The data center busway junction box error proofing interlock of claim 1, wherein: the top elastic plug-in terminal (31) comprises a top plug-in terminal block (311), a sliding plate (312), a shell (313), a clamping block (314), a telescopic rubber block (315) and a fixing block (317), wherein the telescopic rubber block (315) is arranged in the middle of the shell (313), the sliding plate (312) is arranged at the upper end of the telescopic rubber block (315), the top plug-in terminal block (311) is arranged at the upper end of the sliding plate (312), the clamping block (314) is arranged around the inside of the shell (313), and the fixing block (317) is arranged on the side edge of the telescopic rubber block (315).
7. The data center busway junction box error proofing interlock of claim 6, wherein: the inside of telescopic rubber piece (315) is honeycomb structure, fixed block (317) block of telescopic rubber piece (315) side is fixed in clamp splice (314) the block.
8. The data center busway junction box 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 true CN114156811A (en) | 2022-03-08 |
| CN114156811B CN114156811B (en) | 2023-10-03 |
Family
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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 (10)
| 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 |
| US20190097399A1 (en) * | 2015-06-17 | 2019-03-28 | Busway Solutions, LLC | Systems, methods, and apparatus useful for busway power distribution |
| 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 |
-
2021
- 2021-11-22 CN CN202111381754.2A patent/CN114156811B/en active Active
Patent Citations (10)
| 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 |
| US20190097399A1 (en) * | 2015-06-17 | 2019-03-28 | Busway Solutions, LLC | Systems, methods, and apparatus useful for busway power distribution |
| 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 |
|---|---|
| CN114156811B (en) | 2023-10-03 |
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