CN106450833B - Motor and the curved formula multi-core connector of electric machine controller - Google Patents
Motor and the curved formula multi-core connector of electric machine controller Download PDFInfo
- Publication number
- CN106450833B CN106450833B CN201610981151.9A CN201610981151A CN106450833B CN 106450833 B CN106450833 B CN 106450833B CN 201610981151 A CN201610981151 A CN 201610981151A CN 106450833 B CN106450833 B CN 106450833B
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- China
- Prior art keywords
- shell
- copper bar
- electric machine
- machine controller
- formula multi
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Classifications
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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
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
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- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention discloses a kind of motor and the curved formula multi-core connectors of electric machine controller, it includes: shell, insulated mounting plate, soft copper bar, connecting terminal, insulator, shading ring, shielding pressing sleeve, cover board, gasket, sealing ring；When accessing cable, cable accesses connecting terminal after stripping out shielded layer, and shading ring is crimped on cable by shielding pressing sleeve, and shading ring is stuck on shell；Insulator is socketed on connecting terminal, and by interference fit indentation shell；Insulated mounting plate is fixed on shell by removably；Soft copper bar and connecting terminal are fixed on insulated mounting plate by removably；Gasket is arranged between shell and cover board；Sealing ring is arranged on the mounting surface of shell.The present invention realizes product integration, reduces secondary shield processing.Power part can be locally bent, and improved because tolerance leads the copper bar accumulated and caused not in the same plane, guaranteed effectively to contact at copper bar joint face, make to connect more reliable.
Description
Technical field
The present invention relates to electric automobile connector technical fields, and in particular to a kind of motor in electric automobile and electric machine controller
With curved formula multi-core connector.
Background technique
Usual motor lines use 180 ° of outlets, but during practical wiring, and motor lines need to be bent (or even 90 °), curved
Bent position is stress concentration point, and rubber cracking situation is likely to occur in cable process of expansion and contraction, there are security risk, in order to
Meet this requirement, it is necessary to design 90 ° of outlet structures.Existing motor and electric machine controller are to realize that electrical connection is main
Copper tube terminals or hard copper bar connection are crimped using cable, for realize shielding effect the former mainly by shielding pipe fitting or screen
Wire ground is covered, the latter, which then designs, corresponding shielding construction, therefore each defective, the former is that cannot achieve integration, Hou Zheshe
When being calculated as 90 ° of outlets, multicore power part can have cumulative limit, cause power part not in a mounting surface, assembly difficulty, efficiency
It is low.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, a kind of motor in electric automobile and the curved formula multicore of electric machine controller are provided
Connector.
The present invention increases shielding construction, and is connected using soft copper bar, realizes integration, reduces secondary shield processing；Connection
Device terminal can be locally bent, and copper bar caused by improving because of tolerance stack in the same plane, does not guarantee effective at copper bar joint face
Security performance is reinforced in contact；The present invention reduces assembly difficulty, improves production efficiency, saves cost of labor.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of motor and the curved formula multi-core connector of electric machine controller, it includes: shell, insulated mounting plate, soft copper bar, connects
Line terminals, insulator, shading ring, shielding pressing sleeve, cover board, gasket, sealing ring；When accessing cable, the cable is being stripped out
After shielded layer, the connecting terminal is accessed, and shading ring is crimped on cable by shielding pressing sleeve, the shading ring is stuck in institute
It states on shell；The insulator is socketed on the connecting terminal, and is pressed into the shell by interference fit；The insulation
Mounting plate is fixed on the housing by removably；The soft copper bar and connecting terminal are fixed on by removably
On the insulated mounting plate；The gasket is arranged between the shell and the cover board；The sealing ring is arranged described
On the mounting surface of shell.
Further technical solution be further include shield for protecting the soft copper bar.
Further technical solution be further include grommet and tail-hood, the tail-hood is connect with the grommet, and institute
It is fixed on the housing to state tail-hood.
Further technical solution is that the soft copper bar passes through multilayer copper sheet welding fabrication；The soft copper bar includes hard state
Part and soft polymorphic segment；The hard polymorphic segment is provided with warp architecture.
Further technical solution is the tail-hood for elastic tail-hood, and the tail-hood and the shell pass through buckle structure
It fastens.
Further technical solution be further include retaining ring for limiting the grommet installation site.
Further technical solution is that the shading ring is elastic card claw structure.
Further technical solution is the screw being additionally provided on shell for fixed connection device, and the screw front is set
It is equipped with the guide frame of polished rod.
Further technical solution is that fool proof key mapping is provided on the shell.
Further technical solution is to be provided with partition-type structures on the insulated mounting plate.
Compared with prior art, the beneficial effect of the embodiment of the present invention first is that:
1. present invention design has shielding construction, product integration is realized, reduce secondary shield processing.
2. power part of the present invention can be locally bent, improves because tolerance leads the copper bar accumulated and caused not in the same plane, guarantee
It is effectively contacted at copper bar joint face, makes to connect more reliable.
3. 90 ° of outlets can be met according to different requirements.
4. the present invention reduces assembly difficulty, production efficiency is improved, saves cost of labor.
Present invention design has shielding construction, realizes product integration, reduces secondary shield processing, keeps whole-vehicle wiring more beautiful
It sees, reduces shielding failpoint；Design has waterproof construction, improves original structure tube joint waterproofing effect；Design has soft copper bar connection,
Improve because tolerance leads the copper bar accumulated and caused not in the same plane, guarantees effectively to contact at copper bar joint face, make to connect more reliable；
Meet 90 degree of outlets.
The design difficulty of processing that motor lines are reduced using structure of the invention, reduces design production cost；Using this hair
The low assembly difficulty of publicly price-reduction improves production efficiency, saves cost of labor.
Detailed description of the invention
Fig. 1 is the explosive view of one embodiment of the invention.
Fig. 2 is soft copper bar structural schematic diagram in one embodiment of the invention.
Fig. 3 is soft copper bar structural schematic diagram in one embodiment of the invention.
Fig. 4 is component assembling schematic diagram in one embodiment of the invention.
Fig. 5 is sealed structural schematic diagram in one embodiment of the invention.
Fig. 6 is shielding construction schematic diagram in one embodiment of the invention.
Fig. 7 is the portion A partial enlarged view in Fig. 6 of the present invention.
Fig. 8 is one embodiment of the invention scheme of installation.
Fig. 9 is action principle figure of the soft copper bar in installing and using in one embodiment of the invention.
Figure 10 is the schematic perspective view of one embodiment of the invention.
Description of symbols: 1-1- cover board, 1-2- gasket, 1-3- soft copper bar, 1-4- insulated mounting plate, 1-5- shell,
The special screw of 1-6-M6,1-7- sealing ring, 1-8- shield, 1-9- lock washer, 1-10- connecting terminal, 1-11- insulator,
1-12- shields pressing sleeve, 1-13- shading ring, 1-14- retaining ring, 1-15- grommet, 1-16- tail-hood, the hard state of 2-1- soft copper bar, 2-2-
The soft state of soft copper bar, 2-3- soft copper bar up and down adjustment position, 90 ° of bending positions of 2-4- soft copper bar, 3-1-M4 screw, 3-2-M8 nut
Inserts, 3-3-M8 combined screw, 3-4- insulator force fit shell position, the installation of 3-5- tail-hood and position on shell, 4-1-
Equipment mounting surface, 4-2/3/4- sealing element sealing station, 5-1- shielded cable shielded layer, 5-2- shielding line, 5-3- shading ring
With shell contact position, 6-1-M3 screw, 6-2- locating pin, the special screw guide frame of 1-6-1-M6,7-1- equipment wiring is exhausted
Edge column, 7-2-M8 screw, 7-3- connector realize installation and adjustment position.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings and embodiments.
Such as Fig. 1 to Figure 10, according to one embodiment of present invention, the present embodiment discloses a kind of motor and electric machine controller is used
Curved formula multi-core connector, it includes cover board 1-1, gasket 1-2, soft copper bar 1-3, and insulated mounting plate 1-4, shell 1-5, M6 are special
Screw 1-6, sealing ring 1-7, shield 1-8, lock washer 1-9, connecting terminal 1-10, insulator 1-11 shield pressing sleeve 1-12,
Shading ring 1-13, retaining ring 1-14, grommet 1-15 and tail-hood 1-16.
Wherein, the soft copper bar 1-3, by special welding procedure by after copper sheet lamination welding fabrication, using 90 ° of punching presses
Bending process is made, and realizes electrical connection by screw installation in equipment as the power part of connector；Because soft copper bar can office
Portion's bending can improve because tolerance leads copper bar that accumulation causes not problem in the same plane.The connecting terminal 1-10, as connection
The power part of device is the main element of connector work.The shell 1-5 separates power part with the external world, realizes electrical isolation,
After connector is installed to work top, shell end face and installation face contact are made earthy；In addition design has fool proof key on shell
Position, prevents wrong installation.The insulated mounting plate 1-4, is fixed by screws on shell, and soft copper bar and connecting terminal are logical
It crosses screw to be fixed on insulated mounting plate, there is diaphragm structure on insulated mounting plate, guarantee soft copper bar with connecting terminal worked
Insulation separates in journey.The insulator 1-11 leads to force fit shell, increases the creepage distance between terminal and shell, guarantees electricity
Gas performance.The shading ring 1-13, is assembled on cable, directly contacts with shielding line cable shielding layer, while direct with shell
Contact realizes that cable shielding layer is connected with shell, so realization bonding.The shielding pressing sleeve 1-12, by special equipment,
It is crimped onto shading ring outer wall, guarantees that shading ring is effectively connect with cable shielding layer, in work process, cable shielding layer is not fallen off
Shading ring out.The grommet 1-15, mainly plays dust-proof, waterproof action during the work time.The retaining ring 1-14, sets in structure
It is predominantly limited in meter, limits the installation site of grommet.The tail-hood 1-16 squeezes grommet to guarantee to realize waterproof, prevent
Dirt effect.The cover board 1-1 is covered on connector shell, and power part is separated with the external world, realizes electrical isolation.The gasket 1-
2 are placed between cover board and shell, cover board and shell lock during, pressure distortion of the gasket by vertical direction is real
Existing dust-proof, waterproof effect.The special screw 1-6 of M6, this connector during the installation process, by locking this screw, are fixed to
In equipment, the special screw thread leading portion of M6 is polished rod, can be play the guiding role in assembling process.The sealing ring 1-7, the company of being placed in
Device mounting surface is connect, guarantees that connector mounting surface realizes dust-proof, waterproof action.The shield 1-8, predominantly connector are being transported
Soft copper bar is protected not lost on the way, shield uses recyclable plastics, may be reused, meet the requirement of environmental protection.The lock
Tight washer 1-9, is assembled on the special screw of M6, plays fixed blade guard, and lock washer is plastic part, is set as elastic component,
Facilitate locking and remove, plays the role of the locking of metal nuts, while having saved cost.The protection for mainly realizing connector is wanted
It asks, shield effectiveness requirement, 90 ° of outlets require and improve because tolerance leads the copper bar of accumulation cause not in same plane requirement.
Specifically, motor and electric machine controller are as follows with the main assembling process of curved formula multi-core connector:
Shielded cable 5-2 is after wire stripping (shielded layer and stripping head are stayed in stripping) processing, access connecting terminal 1-10, crimping shading ring
1-13 forms cable-assembly；Insulated mounting plate 1-4 is locked on shell 1-5 with 4 M4 screw 3-1, then uses special tool
Then 3 soft copper bars are packed into spaced insulated mounting plate 1-4, then filled by insulator 1-11 force fit shell 1-5 by dress
Enter cable-assembly by 3 M8 combined screw 3-3, locks cable-assembly, be packed into 3 retaining ring 1-14,3 grommet 1-15,3
Tail-hood 1-16, and tail-hood 1-16 is fastened, gasket 1-2 is then loaded onto, covers cover board 1-1, and pass through 4 M3 screw 6-1 of locking
And plain cushion, spring washer, it secures the lid on shell 1-5, is finally packed into sealing ring 1-7, installed by the special screw 1-6 of 2 M6
Onto equipment.Preferably, as shown in figure 8, the connector is installed to by the special screw 1-6 of 2 M6 of locking, spring washer, plain cushion
In equipment, the special screw guide frame 1-6-1 of M6 is designed as polished rod, play the guiding role during locking, locating pin 6-1 makes
With being mainly in the process wrong-mounting prevention, one of them can be retained according to the actual situation.The sealing ring 4-2, gasket 4-3 seal line
After body 4-4 is by squeezing, dust-proof, waterproof effect is realized, to reach the degree of protection of connector requirement.
Preferably, the insulated mounting plate 1-4 is locked by M4 screw 3-1 onto shell 1-5, and cable-assembly passes through
M8 combined screw 3-3 is locked in M8 nut inserts 3-2, and nut inserts is to enter insulated mounting plate through Shooting Technique plastic packaging, is guaranteed
Electric property reduces Assembly part, simplifies conventional lock screw structure (using nut, needing to consider the fixation of part),
Insulator 3-4 selects intensity and the preferable plastics of insulation performance through injection molding, is pressed into shell using special tooling, tail-hood 1-
16 are designed as elastic component, are fastened between shell by buckle structure.
As preferred embodiment, the soft copper bar 1-3 can by special welding procedure by multilayer copper sheet welding fabrication,
It is divided into the hard state 2-1 of soft copper bar, the soft state 2-2 of soft copper bar, the soft state position dimension of soft copper bar is obtained by calculating, realizes soft copper bar 1-
About 3 bendings adjust (attached drawing view direction), and sized is upper and lower 1~2mm, and two-dot chain line is to be adjusted up and down in attached drawing
Extreme position；90 ° of bending position 2-4 of soft copper bar are to be formed through the stamping process, to meet 90 ° of outlets.
As preferred embodiment, as shown in Figure 6 and Figure 7, the shielded cable 5-2, by rubber outside stripped cable,
Retain cable shielding layer 5-1, cable shielding be placed between shading ring 1-13 and shielding pressing sleeve 1-12, compresses shielding pressing sleeve,
Guarantee that shielded layer is not fallen off, shading ring is elastic card claw structure, jaw position can by flexible deformation with shell 1-5 is benign connects
Touching, after connector is installed to equipment, shell is contacted with equipment mounting surface 4-1, realizes bonding, reaches the required screen of connector
Cover efficiency.
As shown in figure 9, the connector of the present embodiment, by 3 M8 screw 7-2, spring washer, that plain cushion is locked to equipment wiring is exhausted
Edge column 7-1, connector realize that installation site is adjusted, and if connector realizes installation and adjustment position 7-3 in Fig. 9, two point is drawn in attached drawing
Line is adjustable extreme position, to realize terminal installation error when improving 90 ° of outlets.
The present embodiment motor and electric machine controller have special dust-proof, water-proof function: shell with curved formula multi-core connector
Between cover board, by locking 4 screws, gasket is compressed, to reach requirement of shelter；The sealing of cable, grommet is packed into
Shell, lock tail-hood, grommet by shell, tail-hood, cable all directions pressure, to reach requirement of shelter；Connector with
Equipment room, by locking the special screw of M6, after sealing ring is by positive pressure, to reach requirement of shelter.
Further, the present embodiment middle connecting terminal mounting surface has controllability, realizes mainly by soft copper bar, this knot
The soft copper bar of structure is welded molded by special process, soft copper bar is divided into soft state and hard state, the soft state position of copper bar can be local curved
Folding, to meet requirement.
The present embodiment motor and electric machine controller have better shield effectiveness with curved formula multi-core connector, and cable is stripping out
After shielded layer, shading ring is crimped on cable by shielding pressing sleeve, shading ring is stuck on shell, and connector is arrived through screw locking
After equipment, connector is connected by mounting surface with equipment, so that shielding be made to be formed into a loop, realizes function of shielding.
" one embodiment " for being spoken of in the present specification, " another embodiment ", " embodiment " etc., refer to combining
Specific features, structure or the feature of embodiment description are included at least one embodiment generally described herein.
It is not centainly to refer to the same embodiment that statement of the same race, which occur, in multiple places in the description.Furthermore, it is understood that in conjunction with any
When a embodiment describes a specific features, structure or feature, to be advocated be realized in conjunction with other embodiments it is this
Feature, structure or feature are also fallen within the scope of the present invention.
Although reference be made herein to invention has been described for the multiple explanatory embodiments invented, however, it is to be understood that this
Field technical staff can be designed that a lot of other modification and implementations, these modifications and implementations will fall in the application
Within disclosed scope and spirit.More specifically, it is disclosed in the scope of the claims in the application, it can be to theme group
The building block and/or layout for closing layout carry out a variety of variations and modifications.In addition to the modification carried out to building block and/or layout
Outer with improving, to those skilled in the art, other purposes also will be apparent.
Claims (9)
1. a kind of motor and the curved formula multi-core connector of electric machine controller, it includes: shell, insulated mounting plate, soft copper bar, wiring
Terminal, insulator, shading ring, shielding pressing sleeve, cover board, gasket, sealing ring；It is characterized by: when accessing cable, the line
Cable accesses the connecting terminal after stripping out shielded layer, and shading ring is crimped on cable by shielding pressing sleeve, institute after installation
State shading ring card on the housing；The insulator is socketed on the connecting terminal, and by described in interference fit indentation
To increase the creepage distance between connecting terminal and shell in shell；There are partition-type structures, the insulating mounting on insulated mounting plate
Plate is fixed on the housing by removably；The soft copper bar and connecting terminal are fixed on described by removably
On insulated mounting plate；The gasket is arranged between the shell and the cover board；The sealing ring is arranged in the shell
Mounting surface on.
2. motor according to claim 1 and the curved formula multi-core connector of electric machine controller, it is characterised in that further include using
In the shield for protecting the soft copper bar.
3. motor according to claim 1 and the curved formula multi-core connector of electric machine controller, it is characterised in that further include envelope
Wire body and tail-hood, the tail-hood are connect with the grommet, and the tail-hood is fixed on the housing.
4. motor according to claim 1 and the curved formula multi-core connector of electric machine controller, it is characterised in that described is soft
Copper bar passes through multilayer copper sheet welding fabrication；The soft copper bar includes hard polymorphic segment and soft polymorphic segment；The hard polymorphic segment is provided with
Warp architecture.
5. motor according to claim 3 and the curved formula multi-core connector of electric machine controller, it is characterised in that the tail
Lid is elastic tail-hood, and the tail-hood and the shell are fastened by buckle structure.
6. motor according to claim 3 and the curved formula multi-core connector of electric machine controller, it is characterised in that further include using
In the retaining ring for limiting the grommet installation site.
7. motor according to claim 1 and the curved formula multi-core connector of electric machine controller, it is characterised in that the screen
Covering ring is elastic card claw structure.
8. motor according to claim 1 and the curved formula multi-core connector of electric machine controller, it is characterised in that on shell also
It is provided with the screw for fixed connection device, the screw front is provided with the guide frame of polished rod.
9. motor according to claim 1 and the curved formula multi-core connector of electric machine controller, it is characterised in that the shell
Fool proof key mapping is provided on body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981151.9A CN106450833B (en) | 2016-11-08 | 2016-11-08 | Motor and the curved formula multi-core connector of electric machine controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981151.9A CN106450833B (en) | 2016-11-08 | 2016-11-08 | Motor and the curved formula multi-core connector of electric machine controller |
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| Publication Number | Publication Date |
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| CN106450833A CN106450833A (en) | 2017-02-22 |
| CN106450833B true CN106450833B (en) | 2019-01-08 |
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| CN201610981151.9A Active CN106450833B (en) | 2016-11-08 | 2016-11-08 | Motor and the curved formula multi-core connector of electric machine controller |
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| CN107611636B (en) * | 2017-09-08 | 2023-08-29 | 厦门唯恩电气有限公司 | Split type metal junction box with electromagnetic shielding function |
| CN108390215A (en) * | 2017-12-30 | 2018-08-10 | 珠海市业成轨道交通设备科技有限公司 | A kind of curved formula circular shield connector of high speed motor car |
| CN108281826B (en) * | 2018-01-16 | 2024-01-23 | 苏州华旃航天电器有限公司 | Multi-core shielding type electric connector |
| CN110323592B (en) * | 2018-03-30 | 2022-10-18 | 比亚迪股份有限公司 | Electric connector, electric unit and vehicle |
| CN108923158B (en) * | 2018-08-21 | 2023-08-11 | 上海航天科工电器研究院有限公司 | OT terminal junction box capable of rapidly uncovering |
| CN109103681A (en) * | 2018-08-25 | 2018-12-28 | 广州连捷新能源科技有限公司 | Two core via metal high-tension connectors |
| CN109244713A (en) * | 2018-09-29 | 2019-01-18 | 深圳市品川能源电气有限公司 | A kind of simplified structure connector and its installation method |
| CN111082245A (en) * | 2019-12-05 | 2020-04-28 | 宝能汽车有限公司 | Terminal mounting bracket and motor controller |
| CN111162404A (en) * | 2019-12-12 | 2020-05-15 | 上海航天科工电器研究院有限公司 | High-voltage connector |
| CN111370893B (en) * | 2020-04-15 | 2024-07-19 | 深圳市沃尔新能源电气科技股份有限公司 | Junction box and electric automobile |
| CN112563809B (en) * | 2020-12-22 | 2022-05-17 | 中航光电科技股份有限公司 | Bending connector |
| CN114465060A (en) * | 2022-02-23 | 2022-05-10 | 深圳市易能拓科技有限公司 | Connector and method of mounting the same |
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| JP3669560B2 (en) * | 1999-08-26 | 2005-07-06 | 矢崎総業株式会社 | Shield wire connection structure of shield connector |
| FR2953071B1 (en) * | 2009-11-23 | 2012-04-20 | Tyco Electronics France Sas | ELECTRICAL CONNECTOR HOUSING |
| JP5743740B2 (en) * | 2011-06-23 | 2015-07-01 | 矢崎総業株式会社 | connector |
| JP2014038793A (en) * | 2012-08-20 | 2014-02-27 | Sumitomo Wiring Syst Ltd | Connector |
| CN103427259A (en) * | 2013-08-01 | 2013-12-04 | 苏州智绿环保科技有限公司 | Electric connector for high-voltage electric equipment |
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| CN104901061A (en) * | 2015-02-13 | 2015-09-09 | 深圳巴斯巴科技发展有限公司 | Novel soft-connection high-voltage connector |
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Address after: 621000 Mianyang City, Sichuan province Fucheng District Jin Jialin Street No. 68 Applicant after: Sichuan Yonggui Science and Technology Co., Ltd. Address before: Deyang City, Sichuan Province Branch Chong Park 621000 Applicant before: Sichuan Yonggui Science and Technology Co., Ltd. |
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