CN108448293A - Electric connector - Google Patents
Electric connector Download PDFInfo
- Publication number
- CN108448293A CN108448293A CN201810464604.XA CN201810464604A CN108448293A CN 108448293 A CN108448293 A CN 108448293A CN 201810464604 A CN201810464604 A CN 201810464604A CN 108448293 A CN108448293 A CN 108448293A
- Authority
- CN
- China
- Prior art keywords
- shell
- terminal
- electric connector
- body component
- positioning region
- Prior art date
- 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.)
- Pending
Links
- 239000004033 plastic Substances 0.000 claims abstract description 57
- 229920003023 plastic Polymers 0.000 claims abstract description 57
- 230000000712 assembly Effects 0.000 claims abstract description 42
- 238000000429 assembly Methods 0.000 claims abstract description 42
- 239000004568 cement Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
- H01R13/6471—Means for preventing cross-talk by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
-
- 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
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
- H01R13/42—Securing in a demountable manner
- H01R13/428—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members
-
- 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
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
- H01R13/42—Securing in a demountable manner
- H01R13/436—Securing a plurality of contact members by one locking piece or operation
- H01R13/4364—Insertion of locking piece from the front
-
- 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
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- 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
- H01R13/46—Bases; Cases
- H01R13/516—Means for holding or embracing insulating body, e.g. casing, hoods
-
- 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
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding with earth pin, blade or socket
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Present invention is disclosed a kind of electric connectors, including：The housing unit of terminal assemblies, the plastic body component of stationary terminal and accepting terminals component and plastic body component, terminal assemblies include several signal terminals and with the spaced several ground terminals of several signal terminals, signal terminal is alternatively arranged with ground terminal, housing unit includes first shell and the second shell fastened with first shell and third shell, and first shell, second shell and third shell collectively constitute a receiving space for accepting terminals component and plastic body component.The present invention forms a receiving space for accommodating the terminal assemblies and the plastic body component by the first shell, second shell and third shell that mutually fasten, the whole shaking for avoiding plastic body component from being formed with terminal assemblies, simultaneously can in order to avoid by external force scratch or squeeze, so as to increase the electric connector terminal structure overall stability.
Description
Technical field
The present invention relates to high-speed electrical connectors, more particularly to a kind of high-speed electrical connectors with supporing shell.
Background technology
High speed connector, including also positive higher rate is sent out for back panel connector, board to board connector and I/O connector
Exhibition.The transmission rate of connector is improved, it is necessary that signal quality of the signal under higher frequency transmission rate.Signal exists
Quality in transmission path is signal integrity, and leading indicator includes harassing, being lost and impedance etc..
The structure of general existing High speed rear panel connector is earth shield piece and to carry signal terminal by plastic cement interference
Plastic cement support chip be fixed together, but manufacturing, transporting, in the case of vibration at high speed, it is easy to make earth shield piece and
Plastic cement support chip loosens, and causes high speed transmission of signals unstable.It is therefore desirable to be improved.
Invention content
The purpose of the present invention is to provide a kind of support constructions so that the more stable electric connector of terminal structure.
In order to achieve the above objectives, the present invention provides the following technical solutions：A kind of electric connector, including：Terminal assemblies, fixation
The plastic body component of the terminal assemblies and the housing unit of the receiving terminal assemblies and the plastic body component, institute
State terminal assemblies include several signal terminals and with several spaced several ground terminals of signal terminal, the letter
Number terminal is alternatively arranged with the ground terminal, and the housing unit includes first shell and fastened with the first shell
Second shell and third shell, the first shell, second shell and third shell collectively constitute a receiving space for receiving
Hold the terminal assemblies and the plastic body component.
Further, each ground terminal include body part, the plug division that extends from the body part side, first
Positioning region and the second positioning region extended from the other side of the body part and third positioning region, first positioning region, institute
The second positioning region, the third positioning region are stated respectively with the plastic body component, housing unit insertion cooperation with fixation
The terminal assemblies.
Further, first positioning region, second positioning region and the third positioning region are chip shape.
Further, the first shell is in groove body type comprising two institutes of two parallel side walls and a connection
State the bottom wall of side wall, two side walls of the second shell vertical connection and the bottom wall.
Further, the side of two side walls is extended with weld part, and the weld part can be inserted with the third shell
Enter cooperation to limit the movement of the third shell.
Further, several arc convex, the second shell and the third shell are additionally provided in the first shell
The through-hole that can be fastened and connected with the arc convex is respectively equipped on body.
Further, the third shell includes the interconnecting piece for accepting the plastic body component.
Further, the ground terminal further includes the welding ends far from inserted terminal setting.
Further, the plastic body component is interlockingly connected with the housing unit.
Further, the electric connector further includes the butt strip for overlapping several ground terminals, the butt strip and the plastic cement
Body assembly is fixedly connected.
The beneficial effects of the present invention are：One is formed by the first shell, second shell and third shell that mutually fasten
A receiving space avoids plastic body component and terminal assemblies group for accommodating the terminal assemblies and the plastic body component
At it is whole shake, while can be in order to avoid be scratched or squeezed by external force, so as to increase the terminal structure of the electric connector
Overall stability.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, below with presently preferred embodiments of the present invention and after coordinating attached drawing to be described in detail such as.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the first stereochemical structure cooperation schematic diagram of plastic body component and terminal assemblies.
Fig. 3 is the second stereochemical structure cooperation schematic diagram of plastic body component and terminal assemblies.
Fig. 4 is plastic body component and butt strip, the fit structure schematic diagram of front shroud, back shroud.
Fig. 5 is terminal assemblies and butt strip, the fit structure schematic diagram of front shroud, back shroud, plastic parts.
Fig. 6 is ground terminal and butt strip, the fit structure schematic diagram of front shroud, back shroud, plastic parts.
Fig. 7 is the structural schematic diagram of ground terminal.
Fig. 8 is the structural schematic diagram of front shroud.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
It please refers to shown in Fig. 1 to Fig. 8, present invention is disclosed a kind of electric connectors 100, including described in terminal assemblies 1, fixation
The plastic body component 2 of terminal assemblies 1 and the housing unit 3 of the receiving terminal assemblies 1 and the plastic body component 2,
Terminal assemblies 1 can be used for being electrically connected other connectors, and plastic body component 2 can fix terminal assemblies 1 so that terminal assemblies 1
It will not be deformed after frequent grafting, housing unit 3 can protect terminal assemblies 1 and plastic body component 2 not to be scratched, and can carry
The stability of high entire electric connector 100.The terminal assemblies 1 are integrally formed part with the plastic body component 2, this is whole
Body part is located at one end of the housing unit 3.
The housing unit 3 includes first shell 4 and the second shell 5 fastened with the first shell 4 and third shell
Body 6, the first shell 4, second shell 5 and third shell 6 collectively constitute a receiving space for accommodating the terminal group
Part 1 and plastic body component 2.Specifically, the first shell 4 is in the groove body type of thin-walled, and the plastic cement sheet is accommodated for whole
Body component 2 and the terminal assemblies 1, there are two the bottom walls of two side walls 7 of parallel side wall 7 and a connection for tool
(not shown), 5 vertical connection of the second shell, two side walls 7 and the bottom wall are used for the plastic body group
Part 2 is closed with the single piece that the terminal assemblies 1 are formed.The side of two side walls 7 is extended with weld part 9, the welding
Portion 9 can be inserted into cooperation to limit the movement of the third shell 6 with the third shell 6.
Several arc convex 10 are additionally provided in the first shell 4, in the second shell 5 and the third shell 6
It is respectively equipped with the through-hole 11 that can be fastened and connected with the arc convex 10.The arc convex 10 has elasticity, so as to quilt
Third shell 6 and the wall of second shell 5 are squeezed to stretch into the through-hole 11.When the arc convex 10 stretches into the through-hole 11
Interior, the arc convex 10 is no longer squeezed by third shell 6 and the wall of second shell 5, so as to multiple using the elasticity of itself
Position.And inner wall of the arc convex 10 after resetting then with the through-hole 11 contacts, to first shell 4,5 and of second shell
Third shell 6 can be connected removably.
The third shell 6 includes the interconnecting piece 12 for accepting the plastic body component 2, which can protect
The setting for the monolithic stability that the plastic body component 2 is formed with the terminal assemblies 1 is demonstrate,proved in the housing unit 3, to
Improve the stability of entire electric connector 100.
The terminal assemblies 1 include several signal terminals 13 and with the spaced several ground connection of several signal terminals 13
Terminal 14, the signal terminal 13 are fixed and the arrangement neat with the ground terminal 14 by the plastic body component 2.It is described
Signal terminal 13 is not contacted with the ground terminal 14.The signal terminal 13 is used for transmission signal, and the ground terminal 14 can
To realize shield effectiveness, so that signal terminal 13 can be with high-speed signal transmission.The ground terminal 14 is engraved structure, from
And contact area can be reduced, convenient for heat dissipation, while reducing own wt so that the overall weight of electric connector 100 reduces, just
In carrying.
The present invention also provides a kind of structure of ground terminal 14, the ground terminal 14 can not only increase shield effectiveness but also with
13 close-packed arrays of signal terminal, thus the overall stability of terminal assemblies 1 can be improved.
The plug division 16 and first that each ground terminal 14 extends including body part 15, from 15 side of the body part
Positioning region 17 and the second positioning region 18 extended from the other side of the body part 15 and third positioning region 19.The electrical connection
Device 100 further includes the front shroud 20 for being clamped several the first positioning regions 17 and the back shroud for being clamped several the second positioning regions 18
21, the plastic body component 2 includes the plastic parts 22 for being fixedly connected with several third positioning regions 19, the front shroud 20 and institute
State the both sides that back shroud 21 is oppositely arranged and is located at the ground terminal 14.First positioning region 17, described second are determined
Position portion 18 and the third positioning region 19 are chip shape, to embedding with corresponding front shroud 20, back shroud 21, plastic parts 22
Enter cooperation.First positioning region 17 can stretch into the front shroud 20 and be contacted with the front shroud 20, and described second is fixed
Position portion 18 can stretch into the back shroud 21 and be contacted with the back shroud 21.The third positioning region 19 is embedded in and fixed company
The plastic parts 22 is connect, to which plastic parts 22 can be such that several ground terminals 14 are arranged according to a certain distance, if with stablizing
The effect of dry ground terminal 14.Front shroud 20, back shroud 21, plastic parts 22 with dead earth terminal 14 and can increase terminal group
The overall stability of part 1.
The body part 15 is fixedly connected with the plug division 16, first positioning region 17, institute including at least one
State the support chip (not labeled) of the second positioning region 18, the third positioning region 19.The ground terminal 14 further includes far from described
Entire electric connector 100 can be welded on mainboard by the welding ends 23 of inserted terminal setting, the welding ends 23.
The front shroud 20 is similar to the structure of the back shroud 21, therefore only describes front shroud 20 in the present embodiment
Structure.Specifically, the front shroud 20 includes cover board body 24, several elastic joint parts 25 being arranged on cover board body 24
And several elastic contact parts 26 positioned at 24 both sides of the cover board body, the cover board body 24 abut the terminal assemblies
1 setting.First positioning region 17 of the ground terminal 14 coordinates with the insertion of the elastic joint part 25, further, the bullet
Property interconnecting piece 25 include straight slot 27 and two the first shrapnels 28 for extending and being oppositely arranged from the wall of the straight slot 27 and the
Two shrapnels 29, the first shrapnel 28 and the second shrapnel 29 mutually stagger so that the first positioning region 17 can smoothly stretch into the straight slot 27
And abutted respectively with the first shrapnel 28, the second shrapnel 29, thus front shroud 20 is in the lateral direction relative to the ground terminal
Any movement does not occur for 14 body part 15.The elastic contact part 26 includes third shrapnel 30, and the third shrapnel 30 utilizes
The elastic force of itself and the cover board body 24 are against thus front shroud 20 is in the up-down direction relative to the ground terminal 14
Body part 15 any movement does not occur.Therefore, the front shroud 20 passes through several first shrapnels 28, several second shrapnels
29 abut with the first positioning region 17, several third shrapnels 30 and body part 15 so as to effectively fix several against connecing
Ground terminal 14, and then also fastened with several 14 spaced signal terminals 13 of ground terminal, further through back shroud 21 with
Further increase the overall stability of terminal assemblies 1.
The electric connector 100 of the present invention further includes the butt strip 31 for overlapping several ground terminals 14, and the butt strip 31 is in hollow out
Strip, set up separately close to the plug division of the terminal assemblies 1 and set, due to the butt strip 31 simultaneously with several ground terminals
14 contacts, increase the contact area of butt strip 31 and the ground terminal 14, therefore can be used for improving transmission shield effectiveness, make
Obtaining signal terminal 13 can be with speedy carding process signal.The butt strip 31 connects the ground terminal 14, and with the plastic body group
Part 2 is fixedly connected, to ensure the overall stability of the terminal assemblies 1.Further, the plastic body component 2 further includes
First plastic cement 32 of the fixed 1 grafting part of terminal assemblies and the second plastic cement 33 fastened with the butt strip 31.Described
One plastic cement 32 is equipped with the slot (not labeled) convenient for grafting, is accommodated in the slot and is fixed with 1 plug division of the terminal assemblies
Point.Second plastic cement 33 is several lugs extended from 2 side of plastic body component, and several lugs are taken with described
The hollow-out part of piece 31 fastens.The butt strip 31 is made of conductive material, that is, has electrical conductance, such as rubber, metal material, lead
Electric plastics etc..
Beneficial effects of the present invention：A receipts are formed by the first shell, second shell and third shell that mutually fasten
Hold space for accommodating the terminal assemblies and the plastic body component, and the third shell is provided with described to accept
The interconnecting piece of plastic body component, avoid that plastic body component and terminal assemblies form it is whole shake, while can in order to avoid by
External force scratch or squeeze, so as to increase the electric connector terminal structure overall stability.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of electric connector, which is characterized in that including：Terminal assemblies, the fixed terminal assemblies plastic body component with
And the housing unit of the receiving terminal assemblies and the plastic body component, the terminal assemblies include several signal terminals with
And it is arranged with several spaced several ground terminals of signal terminal, the signal terminal and the ground terminal interval
Row, the housing unit include first shell and the second shell fastened with the first shell and third shell, and described the
One shell, second shell and third shell collectively constitute a receiving space for accommodating the terminal assemblies and the plastic cement sheet
Body component.
2. electric connector as described in claim 1, it is characterised in that：Each ground terminal includes body part, described in
Plug division, the first positioning region and the second positioning region extended from the other side of the body part that body part side extends and the
Three positioning regions, first positioning region, second positioning region, the third positioning region respectively with the plastic body component,
The housing unit insertion cooperation is with the fixation terminal assemblies.
3. electric connector as claimed in claim 2, it is characterised in that：First positioning region, second positioning region and institute
It is chip shape to state third positioning region.
4. electric connector as claimed in claim 3, it is characterised in that：The first shell is in groove body type comprising two flat
The bottom wall of two side walls of capable side wall and a connection, two side walls of the second shell vertical connection and institute
State bottom wall.
5. electric connector as claimed in claim 4, it is characterised in that：The side of two side walls is extended with weld part, institute
Cooperation can be inserted into limit the movement of the third shell with the third shell by stating weld part.
6. electric connector as claimed in claim 5, it is characterised in that：It is convex that several arcs are additionally provided in the first shell
It rises, the through-hole that can be fastened and connected with the arc convex is respectively equipped on the second shell and the third shell.
7. electric connector as claimed in claim 6, it is characterised in that：The third shell includes accepting the plastic cement sheet
The interconnecting piece of body component.
8. electric connector as claimed in claim 7, it is characterised in that：The ground terminal further includes being set far from the inserted terminal
The welding ends set.
9. being used for electric connector as claimed in claim 8, it is characterised in that：The plastic body component and the housing unit
It is interlockingly connected.
10. being used for electric connector as described in claim 1, it is characterised in that：If the electric connector further includes overlap joint stem grafting
The butt strip of ground terminal, the butt strip are fixedly connected with the plastic body component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810464604.XA CN108448293A (en) | 2018-05-15 | 2018-05-15 | Electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810464604.XA CN108448293A (en) | 2018-05-15 | 2018-05-15 | Electric connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108448293A true CN108448293A (en) | 2018-08-24 |
Family
ID=63203766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810464604.XA Pending CN108448293A (en) | 2018-05-15 | 2018-05-15 | Electric connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108448293A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202749590U (en) * | 2012-09-06 | 2013-02-20 | 温州意华通讯接插件有限公司 | Electrical connector assembly |
| CN204966744U (en) * | 2015-09-19 | 2016-01-13 | 温州意华接插件股份有限公司 | Electric connector |
| CN105720402A (en) * | 2016-03-23 | 2016-06-29 | 欧品电子(昆山)有限公司 | Miniature pluggable connector |
| CN105742854A (en) * | 2014-12-08 | 2016-07-06 | 欧品电子(昆山)有限公司 | Backboard socket connector |
| CN106353863A (en) * | 2016-11-22 | 2017-01-25 | 温州意华接插件股份有限公司 | Shell and small hot plug connector with shell |
| CN208401117U (en) * | 2018-05-15 | 2019-01-18 | 深圳市益晟康科技有限公司 | Electric connector |
-
2018
- 2018-05-15 CN CN201810464604.XA patent/CN108448293A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202749590U (en) * | 2012-09-06 | 2013-02-20 | 温州意华通讯接插件有限公司 | Electrical connector assembly |
| CN105742854A (en) * | 2014-12-08 | 2016-07-06 | 欧品电子(昆山)有限公司 | Backboard socket connector |
| CN204966744U (en) * | 2015-09-19 | 2016-01-13 | 温州意华接插件股份有限公司 | Electric connector |
| CN105720402A (en) * | 2016-03-23 | 2016-06-29 | 欧品电子(昆山)有限公司 | Miniature pluggable connector |
| CN106353863A (en) * | 2016-11-22 | 2017-01-25 | 温州意华接插件股份有限公司 | Shell and small hot plug connector with shell |
| CN208401117U (en) * | 2018-05-15 | 2019-01-18 | 深圳市益晟康科技有限公司 | Electric connector |
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