CN201270398Y - Dual row bus bar connecting device - Google Patents
Dual row bus bar connecting device Download PDFInfo
- Publication number
- CN201270398Y CN201270398Y CNU2008201501784U CN200820150178U CN201270398Y CN 201270398 Y CN201270398 Y CN 201270398Y CN U2008201501784 U CNU2008201501784 U CN U2008201501784U CN 200820150178 U CN200820150178 U CN 200820150178U CN 201270398 Y CN201270398 Y CN 201270398Y
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- CN
- China
- Prior art keywords
- bus
- shield sheath
- earth connection
- breach
- bar
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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.)
- Expired - Lifetime
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/005—Electrical connection between switchgear cells
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- Installation Of Bus-Bars (AREA)
Abstract
A bus-bar connecting device is formed by two bus-bar insulators and a bus-bar connector, wherein a plurality of contacts are buckled with corresponding notches of two ring gaskets to form a hollow cylinder, a plurality of spring rings and two ring gears are respectively sleeved in two spring notches and ring gear notches of the hollow cylinder, and the hollow cylinder, a plurality of spring rings and the two ring gears can form an electric conductor, and the electric conductor is fixed inside an insulating sheath through the teeth of the ring gears and the inner wall of the insulating sheath. When in use, two current-carrying bus-bars are respectively connected with the electric contacts of two bus-bar insulators, the two ends of the bus-bar connector are respectively clamped with the electric contacts of the two bus-bar insulators, the two current-carrying bus-bars are connected with each other through a bus-bar insulator, the bus-bar connector and another bus-bar insulator. The bus-bar connecting device has the advantages of capable connection between two near high-voltage large current electrical devices, easy installation, small structure, no outer exposed conductive portion, and difficult affects to the power transmission, and can assure the safety and the stability of the power transmission.
Description
Technical field
The utility model relates to a kind of bus connecting device, definitely says, relates to the bus connecting device of a kind of high voltage, big electric current, belongs to the technical field of electric power dispensing.
Background technology
In the electric power distribution technology of urban and rural power grids, it is a routine work that the current carrying bus of the current carrying bus of an electric equipment and another electric equipment is linked together.These current carrying bus current potential of living in and ampacity are respectively in the magnitude of 10kV～25kV and 200A～600A.The technical scheme that background technology solves this technical problem is: the conductor of the porcelain insulator of the current carrying bus of two electric equipments by is separately drawn from electric equipment separately, with cable the conductor of two porcelain insulators is linked together again.Though this cable connected mode is very ripe technically, but still exists many problems.
Workmen's technical merit is uneven; and cable is connected with certain technical requirements; the step complexity that connects operation, regular meeting is connected unreliablely because of human factor causes between electric equipment and the electric equipment, causes unnecessary quality accident when causing equipment operation.
Adopt cable to connect and to consider the bending radius of cable installation and workmen's working space, this just requires must leave suitable spacing between the electric equipment, cause the electric equipment structure after the connection not compact, institute takes up space big, has limited the scope of application of part electric equipment to a certain extent.
Adopt cable to connect and cable end will occur exposing, this is the important safety hidden danger that influences the normal operation of electric equipment, and is not in place as safeguard procedures, exposes cable end and meets water, foreign material etc., all can cause device damage, even cause personal injury accident.As adopt insulating case to expose cable end and insulate in the external world, the one, difficulty of construction is big, efficient is low, the 2nd, reliability can not guarantee, the coupling part of cable end, and voltage is higher, under normal operation as connect imprecision, insulating case is easy to pitch, and loses insulation effect, even buries the hidden danger of fault.
Summary of the invention
The purpose of this utility model provides a kind of bus connecting device.This apparatus structure is small and exquisite, no exposed conductive part, good insulation preformance.When this device is used for bus and connects, installs simple and easy, workmen's technical merit is required low, the electric equipment compact conformation after bus connects, take up space for a short time, electric power transfer is not subjected to the influence of external environment condition.
For achieving the above object, the utility model adopts following technical scheme.This device is made up of two bus-bar insulators and a bus tie, bus-bar insulator contains insulating cover and electrical contact, bus tie contains electric conductor and insulating sleeve, each self-corresponding breach is fastened togather on a plurality of contacts and two lining rings, constitute hollow cylinder, hoop cover multiple tracks spring coil and twice gear ring respectively in two spring breach of hollow cylinder and the gear ring breach, hollow cylinder, multiple tracks spring coil and twice gear ring constitute electric conductor, tooth and the inwall of the insulating sleeve inside that is fixed on insulating sleeve of electric conductor by gear ring, during use, two current carrying bus are connected with the electrical contact of two bus-bar insulators respectively, the two ends of bus tie respectively with the electrical contact clamping of two bus-bar insulators, two current carrying bus are by a bus-bar insulator, bus tie and another bus-bar insulator link together.
Now describe the technical solution of the utility model in detail.A kind of bus connecting device, it is characterized in that, by two bus-bar insulators and the auxiliary products that bus tie is formed, the structure of two bus-bar insulators is identical, bus-bar insulator contains insulating cover and electrical contact, the material that constitutes insulating cover is an epoxy resin, insulating cover is cup-shaped, q installing hole is evenly distributed on the cover mouth of insulating cover, q is 3～8 natural number, sealing has the inserts nut in each installing hole, the constituent material of electrical contact is a copper, the bottom of electrical contact, middle part and head are cylindrical respectively, cylindrical and taper type, electrical contact is locked in the core at the bottom of the cover of insulating cover in the insulating cover, the bottom of electrical contact is run through at the bottom of the cover of insulating cover, the central shaft of electrical contact overlaps with the central shaft of insulating cover, the bottom of electrical contact has bus screw is installed, bus tie contains electric conductor and insulating sleeve, electric conductor contains m contact, two lining rings, two gear rings and n spring coil, m is 6～18 natural number, n is 2～6 even number, the material that constitutes contact is a copper, the shape of all contacts is all identical with size, the two ends of the outside of contact and middle part are shaped on spring breach and gear ring breach respectively, the two ends of the inner edge of contact are shaped on respectively with the middle part and contact inclined-plane and locating notch, the spring breach, gear ring breach and locating notch are all rectangular, the material that constitutes lining ring is a stainless steel, the shape of two lining rings is all identical with size, it is circular that lining ring is, be shaped on m breach on the lining ring, m breach is all rectangular, m breach is uniformly distributed in the outer rim of lining ring, m breach radius from the outer rim of lining ring along lining ring extends to the center of circle of lining ring, the material that constitutes gear ring is a silicon rubber, the shape of two gear rings is all identical with size, gear ring is cylindrical, p tooth evenly distributes and stands on the outer wall of gear ring, p is 8～12 natural number, the shape of all spring coils is all identical with size, spring coil is end to end hairspring, the material that constitutes insulating sleeve is a silicon rubber, insulating sleeve is hollow drum, the inner space of insulating sleeve is cylindric, m contact locating notch by separately respectively with two lining rings on each self-corresponding breach be fastened togather, constitute hollow cylinder, hoop overlaps n/2 road spring coil respectively in two spring breach of this hollow cylinder, hoop cover twice gear ring in the gear ring breach of this hollow cylinder, hollow cylinder, n/2 road spring coil and twice gear ring constitute electric conductor, tooth and the inwall of the insulating sleeve inside that is fixed on insulating sleeve of electric conductor by gear ring, during use, two current carrying bus that plan links together are installed screw with bolt with the bus of the electrical contact of two bus-bar insulators by copper bar separately respectively and are connected, the contact inclined-plane at bus tie two ends is connected together with the electrical contact of two bus-bar insulators respectively, and two current carrying bus are by a bus-bar insulator, bus tie and another bus-bar insulator link together.
The technical solution of the utility model is further characterized in that, bus tie also contains shield sheath, ground spring circle and earth connection, the place, Middle Ring Line of insulating sleeve has the cross section and is circular groove, the material that constitutes shield sheath is a silicon rubber, shield sheath is cylindrical, the ground spring circle is end to end hairspring, earth connection is an insulated conductor, the shield sheath hoop is enclosed within the middle part of the outer wall of insulating sleeve, ground spring circle hoop is enclosed within the recess of shield sheath, the lead and the ground spring circle of earth connection one end are stranded, and during use, the earth connection other end is connected on the earth terminal of a current carrying bus place equipment.
The technical solution of the utility model is further characterized in that, m=12, n=4, p=8, q=6.
The technical solution of the utility model is further characterized in that, contact and electrical contact surperficial silver coated.
Compare with background technology, the utlity model has following advantage:
1, this apparatus structure is small and exquisite, no exposed conductive part, good insulation preformance.
When 2, this device is used for bus and connects, installs simple and easy, low to workmen's technical merit requirement.
3, the electric equipment compact conformation after bus connects, institute takes up space little, and electric power transfer is not subjected to the influence of external environment condition.
Description of drawings
Fig. 1 is the cutaway view of the bus tie of embodiment 2, among the figure, and the 2nd, bus tie, the 20th, lining ring, the 21st, contact, the 22nd, spring coil, the 23rd, gear ring, the 24th, insulating sleeve, the 25th, shield sheath, the 26th, the ground spring circle, there is the cross section at A-A and B-B place.
Fig. 2 is the schematic cross-section at A-A place among Fig. 1.
Fig. 3 is the schematic cross-section at B-B place among Fig. 1.
Fig. 4 is the structural representation of contact 21, among the figure, and the 210th, spring breach, the 211st, locating notch, the 212nd, gear ring breach.Two spring breach 210 and two locating notches 211 are arranged on the contact 21.
Fig. 5 is the bus-bar insulator cutaway view, among the figure, and the 1st, bus-bar insulator, the 10th, insulating cover, the 101st, the cover mouth, the 102nd, the cover end, the 103rd, installing hole, the 104th, nut, the 11st, electrical contact, the 110th, bus is installed screw.
Fig. 6 is the connection diagram of two bus-bar insulators 1 and a bus tie 2.
Embodiment
Now describe the technical solution of the utility model in conjunction with the accompanying drawings and embodiments in detail.
A kind of bus connecting device, it is characterized in that, by two bus-bar insulators 1 and the auxiliary products that bus tie 2 is formed, the structure of two bus-bar insulators 1 is identical, bus-bar insulator 1 contains insulating cover 10 and electrical contact 11, the material that constitutes insulating cover 10 is an epoxy resin, insulating cover 10 is cup-shaped, q installing hole 103 is evenly distributed on the cover mouth 101 of insulating cover 1, q is 3～8 natural number, sealing has inserts nut 104 in each installing hole 103, the constituent material of electrical contact 11 is a copper, the bottom of electrical contact 11, middle part and head are cylindrical respectively, cylindrical and taper type, electrical contact 11 is locked at the bottom of the cover of insulating covers 10 in the insulating cover 10 102 core, the bottom of electrical contact 11 runs through at the bottom of the cover of insulating cover 10 102, the central shaft of electrical contact 11 overlaps with the central shaft of insulating cover 10, the bottom of electrical contact 11 has bus screw 110 is installed, bus tie 2 contains electric conductor 27 and insulating sleeve 24, electric conductor 27 contains m contact 21, two lining rings 20, two gear rings 23 and n spring coil 22, m is 6～18 natural number, n is 2～6 even-integral number, the material that constitutes contact 21 is a copper, the shape of all contacts 21 is all identical with size, the two ends of the outside of contact 21 and middle part are shaped on spring breach 210 and gear ring breach 212 respectively, the two ends of the inner edge of contact 21 are shaped on respectively with the middle part and contact inclined-plane 213 and locating notch 211, spring breach 210, gear ring breach 212 and locating notch 211 are all rectangular, the material that constitutes lining ring 20 is a stainless steel, the shape of two lining rings 20 is all identical with size, lining ring 20 is circular, be shaped on m breach on the lining ring 20, m breach is all rectangular, m breach is uniformly distributed in the outer rim of the annulus of lining ring 20, m breach radius from the outer rim of lining ring 20 along lining ring 20 extends to the center of circle of lining ring 20, the material that constitutes gear ring 23 is a silicon rubber, the shape of two gear rings 23 is all identical with size, gear ring 23 is cylindrical, p tooth evenly distributes and stands on the outer wall of the pipe of gear ring 23, p is 8～12 natural number, the shape of all spring coils 22 is all identical with size, spring coil 22 is end to end hairsprings, the material that constitutes insulating sleeve 24 is a silicon rubber, insulating sleeve 24 is hollow drums, the inner space of insulating sleeve 24 is cylindric, m contact 21 locating notch 211 by separately respectively with two lining rings 20 on each self-corresponding breach be fastened togather, constitute hollow cylinder, hoop overlaps n/2 road spring coil 22 respectively in two spring breach 210 of this hollow cylinder, hoop cover twice gear ring 23 in the gear ring breach 212 of this hollow cylinder, hollow cylinder, n/2 road spring coil 22 and twice gear ring 23 constitute electric conductor 27, tooth and the inwall of insulating sleeve 24 inside that is fixed on insulating sleeve 23 of electric conductor 27 by gear ring 23, during use, two current carrying bus that plan links together are installed screw 110 with bolt with the bus of the electrical contact 11 of two bus-bar insulators 1 by copper bar separately respectively and are connected, the contact inclined-plane 213 at bus tie 1 two ends is connected together with the electrical contact 11 of two bus-bar insulators 1 respectively, and two current carrying bus are by a bus-bar insulator 1, bus tie 2 and another bus-bar insulator 1 link together.
Except for the following differences, remainder and embodiment 1 are identical.
Embodiment 3
Except for the following differences, remainder and embodiment 1 are identical.m＝12，n＝4，p＝8，q＝6。
Embodiment 4
Except for the following differences, remainder and embodiment 2 are identical.m＝12，n＝4，p＝8，q＝6。
In the reality test, present embodiment 1 industrial frequency withstand voltage reaches 42kV/min; Pass through local discharge test; Through-current capability is up to state standards, and promptly 1.1 of 630A times, is 693A; The dynamic and thermal stability electric current is 20kA/4s.
Embodiment 5
Except for the following differences, remainder and embodiment 1 are identical.Contact 21 and electrical contact 11 surperficial silver coated.
Embodiment 6
Except for the following differences, remainder and embodiment 2 are identical.Contact 21 and electrical contact 11 surperficial silver coated.
Embodiment 7
Except for the following differences, remainder and embodiment 1 are identical.M=12, n=4, p=8, q=6, contact 21 and electrical contact 11 surperficial silver coated.
Embodiment 8
Except for the following differences, remainder and embodiment 2 are identical.M=12, n=4, p=8, q=6, contact 21 and electrical contact 11 surperficial silver coated.
Claims (7)
1, a kind of bus connecting device, it is characterized in that, the auxiliary products of forming by two bus-bar insulators (1) and a bus tie (2), the structure of two bus-bar insulators (1) is identical, bus-bar insulator (1) contains insulating cover (10) and electrical contact (11), the material that constitutes insulating cover (10) is an epoxy resin, insulating cover (10) is cup-shaped, q installing hole (103) is evenly distributed on the cover mouth (101) of insulating cover (1), q is 3～8 natural number, the interior sealing of each installing hole (103) has inserts nut (104), the constituent material of electrical contact 11 is a copper, the bottom of electrical contact (11), middle part and head are cylindrical respectively, cylindrical and taper type, electrical contact (11) is locked in the core of (102) at the bottom of the cover of the interior insulating cover of insulating cover (10) (10), (102) at the bottom of the cover of insulating cover (10) are run through in the bottom of electrical contact (11), the central shaft of electrical contact (11) overlaps with the central shaft of insulating cover (10), the bottom of electrical contact (11) has bus screw (110) is installed, bus tie (2) contains electric conductor (27) and insulating sleeve (24), electric conductor (27) contains m contact (21), two lining rings (20), two gear rings (23) and n spring coil (22), m is 6～18 natural number, n is 2～6 even number, the material that constitutes contact (21) is a copper, the shape of all contacts (21) is all identical with size, the two ends of the outside of contact (21) and middle part are shaped on spring breach (210) and gear ring breach (212) respectively, the two ends of the inner edge of contact (21) are shaped on respectively with the middle part and contact inclined-plane (213) and locating notch (211), spring breach (210), gear ring breach (212) and locating notch (211) are all rectangular, the material that constitutes lining ring (20) is a stainless steel, the shape of two lining rings (20) is all identical with size, lining ring (20) is circular, be shaped on m breach on the lining ring (20), m breach is all rectangular, m breach is uniformly distributed in the outer rim of the annulus of lining ring (20), m breach radius from the outer rim of lining ring (20) along lining ring (20) extends to the center of circle of lining ring (20), the material that constitutes gear ring (23) is a silicon rubber, the shape of two gear rings (23) is all identical with size, gear ring (23) is cylindrical, p tooth evenly distributes and stands on the outer wall of the pipe of gear ring (23), p is 8～12 natural number, the shape of all spring coils (22) is all identical with size, spring coil (22) is end to end hairspring, the material that constitutes insulating sleeve (24) is a silicon rubber, insulating sleeve (24) is hollow drum, the inner space of insulating sleeve (24) is cylindric, m contact 21 gone up each self-corresponding breach with two lining rings (20) respectively by locating notch (211) separately and is fastened togather, constitute hollow cylinder, hoop overlaps n/2 road spring coil (22) respectively in two spring breach (210) of this hollow cylinder, hoop cover twice gear rings (23) in the gear ring breach (212) of this hollow cylinder, hollow cylinder, n/2 road spring coil (22) and twice gear ring (23) constitute electric conductor (27), tooth and the inwall of insulating sleeve (24) inside that is fixed on insulating sleeve (23) of electric conductor (27) by gear ring (23), during use, two current carrying bus that plan links together are installed screw (110) with bolt with the bus of the electrical contact (11) of two bus-bar insulators (1) by copper bar separately respectively and are connected, the contact inclined-plane (213) at bus tie (1) two ends is connected together with the electrical contact (11) of two bus-bar insulators (1) respectively, and two current carrying bus are by a bus-bar insulator (1), bus tie (2) and another bus-bar insulator (1) link together.
2, bus connecting device according to claim 1, it is characterized in that, bus tie (2) also contains shield sheath (25), ground spring circle (26) and earth connection, the place, Middle Ring Line of insulating sleeve (24) has the cross section and is circular groove, the material that constitutes shield sheath (25) is a silicon rubber, shield sheath (25) is cylindrical, ground spring circle (26) is end to end hairspring, earth connection is an insulated conductor, shield sheath (25) hoop is enclosed within the middle part of the outer wall of insulating sleeve (24), ground spring circle (26) hoop is enclosed within the recess of shield sheath (25), the lead of earth connection one end and ground spring circle (26) are stranded, during use, the earth connection other end is connected on the earth terminal of a current carrying bus place equipment.
3, bus connecting device according to claim 1 is characterized in that, m=12, n=4, p=8, q=6.
4, bus connecting device according to claim 1 is characterized in that, contact (21) and electrical contact (11) surperficial silver coated.
5, bus connecting device according to claim 1, it is characterized in that, bus tie (2) also contains shield sheath (25), ground spring circle (26) and earth connection, the place, Middle Ring Line of insulating sleeve (24) has the cross section and is circular groove, the material that constitutes shield sheath (25) is a silicon rubber, shield sheath (25) is cylindrical, ground spring circle (26) is end to end hairspring, earth connection is an insulated conductor, shield sheath (25) hoop is enclosed within the middle part of the outer wall of insulating sleeve (24), and ground spring circle (26) hoop is enclosed within the recess of shield sheath (25), and the lead of earth connection one end and ground spring circle (26) are stranded, during use, the earth connection other end is connected on the earth terminal of a current carrying bus place equipment, m=12, n=4, p=8, q=6.
6, bus connecting device according to claim 1, it is characterized in that, bus tie (2) also contains shield sheath (25), ground spring circle (26) and earth connection, the place, Middle Ring Line of insulating sleeve (24) has the cross section and is circular groove, the material that constitutes shield sheath (25) is a silicon rubber, shield sheath (25) is cylindrical, ground spring circle (26) is end to end hairspring, earth connection is an insulated conductor, shield sheath (25) hoop is enclosed within the middle part of the outer wall of insulating sleeve (24), ground spring circle (26) hoop is enclosed within the recess of shield sheath (25), the lead of earth connection one end and ground spring circle (26) are stranded, during use, the earth connection other end is connected on the earth terminal of a current carrying bus place equipment, contact (21) and electrical contact (11) surperficial silver coated.
7, bus connecting device according to claim 1, it is characterized in that, bus tie (2) also contains shield sheath (25), ground spring circle (26) and earth connection, the place, Middle Ring Line of insulating sleeve (24) has the cross section and is circular groove, the material that constitutes shield sheath (25) is a silicon rubber, shield sheath (25) is cylindrical, ground spring circle (26) is end to end hairspring, earth connection is an insulated conductor, and shield sheath (25) hoop is enclosed within the middle part of the outer wall of insulating sleeve (24), and ground spring circle (26) hoop is enclosed within the recess of shield sheath (25), the lead of earth connection one end and ground spring circle (26) are stranded, during use, the earth connection other end is connected on the earth terminal of a current carrying bus place equipment, m=12, n=4, p=8, q=6, contact (21) and electrical contact (11) surperficial silver coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201501784U CN201270398Y (en) | 2008-06-27 | 2008-06-27 | Dual row bus bar connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201501784U CN201270398Y (en) | 2008-06-27 | 2008-06-27 | Dual row bus bar connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201270398Y true CN201270398Y (en) | 2009-07-08 |
Family
ID=40843008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201501784U Expired - Lifetime CN201270398Y (en) | 2008-06-27 | 2008-06-27 | Dual row bus bar connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201270398Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122539A (en) * | 2010-12-29 | 2011-07-13 | 李永勤 | Totally-enclosed refractory flame-retardant flexible branch bus |
| CN102544868A (en) * | 2010-10-08 | 2012-07-04 | 横河电机株式会社 | Connector |
| CN101373890B (en) * | 2008-06-27 | 2013-05-22 | 上海市电力公司 | Busbar connection device |
| WO2016202171A1 (en) * | 2015-06-19 | 2016-12-22 | 伊顿电力设备有限公司 | Bus connector |
| CN112383008A (en) * | 2020-10-22 | 2021-02-19 | 江苏向荣电气有限公司 | Intelligent bus duct convenient to install |
-
2008
- 2008-06-27 CN CNU2008201501784U patent/CN201270398Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373890B (en) * | 2008-06-27 | 2013-05-22 | 上海市电力公司 | Busbar connection device |
| CN102544868A (en) * | 2010-10-08 | 2012-07-04 | 横河电机株式会社 | Connector |
| US8758049B2 (en) | 2010-10-08 | 2014-06-24 | Yokogawa Electric Corporation | Connector |
| CN102544868B (en) * | 2010-10-08 | 2016-03-02 | 横河电机株式会社 | Connector |
| CN102122539A (en) * | 2010-12-29 | 2011-07-13 | 李永勤 | Totally-enclosed refractory flame-retardant flexible branch bus |
| CN102122539B (en) * | 2010-12-29 | 2012-11-21 | 李永勤 | Totally-enclosed refractory flame-retardant flexible branch bus |
| WO2016202171A1 (en) * | 2015-06-19 | 2016-12-22 | 伊顿电力设备有限公司 | Bus connector |
| CN106329167A (en) * | 2015-06-19 | 2017-01-11 | 伊顿电力设备有限公司 | Bus connector |
| CN112383008A (en) * | 2020-10-22 | 2021-02-19 | 江苏向荣电气有限公司 | Intelligent bus duct convenient to install |
| CN112383008B (en) * | 2020-10-22 | 2022-06-14 | 江苏向荣电气有限公司 | Intelligent bus duct convenient to install |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090708 Effective date of abandoning: 20080627 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20090708 Effective date of abandoning: 20080627 |
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| RGAV | Abandon patent right to avoid regrant |