CN104795658B - It is a kind of can both forward and reverse directions to slotting USB socket and preparation method thereof - Google Patents
It is a kind of can both forward and reverse directions to slotting USB socket and preparation method thereof Download PDFInfo
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- CN104795658B CN104795658B CN201510133554.3A CN201510133554A CN104795658B CN 104795658 B CN104795658 B CN 104795658B CN 201510133554 A CN201510133554 A CN 201510133554A CN 104795658 B CN104795658 B CN 104795658B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 22
- 239000011230 binding agent Substances 0.000 claims description 9
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 5
- 230000037431 insertion Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000003825 pressing Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Abstract
The present invention relates to connector technique field, more particularly to it is a kind of can both forward and reverse directions to slotting USB socket and preparation method thereof, include metal shell, insulating body, conducting terminal, the front end of insulating body has protruded out lock pin, the upper and lower ends face of lock pin respectively sets row's conducting terminal, the conducting terminal of lock pin upper surface connects one to one by the conducting terminal by left-to-right order respectively successively with lock pin lower surface by by right to left order, the lock pin of the present invention is two-sided to be electrically connected, so that plug can be electrically connected effectively from positive and negative either direction insertion socket, it is easy to use, it is not in the phenomenon of direction wrong plug, effectively protect plug and socket, connection is simple and convenient, it is durable, improve operating efficiency;And without the attachment structure for changing USB socket and circuit board, it can be mounted directly on preferred circuit plate so as to directly substituting traditional one direction USB socket.
Description
Technical field:
The present invention relates to technical field of electric connectors, more particularly to it is a kind of can both forward and reverse directions to slotting USB socket and its system
Make method.
Background technology:
USB (Universal Serial BUS, USB), it is an external bus standard, for specification electricity
Being connected and communicate with for brain and external equipment, is to apply the interfacing in PC fields.The plug and play of USB interface holding equipment and
Warm connection function.In the current Peripheral Interface for data transfer and data exchange, USB(USB)Undoubtedly
One of interface being most widely used in computer and periphery consumer electronicses field.Computer periphery peripheral hardware passes through absolutely mostly
USB connection computers carry out data transmission with exchanging, such as mouse, keyboard, USB flash disk, printer, mobile phone, camera etc..So just need
USB socket to be installed on computers, plug is installed in computer peripheral outer equipment, plug insertion socket during connection makes
Both produce electrical connection.It is presently used for transmission communication, charging energization of the portable mobile apparatus such as mobile phone, tablet personal computer etc. even
Connect in device interface, micro universal serial bus(MICRO USB)Interface connector has been widely used.
It is one-to-one because plugs and sockets designs the contact that is electrically connected in itself, wrong plug can cause invalid or even burn equipment
The substantial risk such as bad.In order to prevent people's wrong plug when being docked using USB interface, USB interface has specially carried out fool-proof design, i.e.,
Plug, socket can be because its one side need aligning direction just to insert slotting characteristic, and this is accomplished by wasting many inspections
The time looked into and proofreaded.So, user when in use, generally requires to check that socket is which direction, then plug is adjusted to
Same direction is inserted into, or a slotting direction of not exchanging is inserted again, and varying sometimes can also overexert slotting because of hard insert
Head or socket are broken to slotting, cause very burden.
The content of the invention:
The purpose of the present invention provides one kind aiming at the deficiency that prior art is present can be for USB plug tow sides
It is any to inserting, manufacture craft simply can both forward and reverse directions to slotting USB socket, additionally provide it is this can both forward and reverse directions to inserting
The preparation method of USB socket.
To achieve these goals, the technical solution adopted by the present invention is:
It is a kind of can both forward and reverse directions to slotting USB socket, the insulation sheet for include metal shell, being arranged in metal shell
Body, conducting terminal, the front end of insulating body have protruded out lock pin, and the upper and lower ends face of lock pin respectively sets row's conducting terminal, led
Electric terminal is embedded inside insulating body, and insulating body is combined into one knot by integral injection molding mode and conducting terminal
The contact flat spring extended outside lock pin is formed respectively on structure, each conducting terminal, the conducting terminal positioned at lock pin upper surface
Contact flat spring arch upward upwards, the contact flat spring positioned at the conducting terminal of lock pin lower surface arched upward downwards, and lock pin upper surface is led
Electric terminal is pressed to be pressed with the conducting terminal of lock pin lower surface successively respectively by left-to-right order and corresponded by right to left order
Connection;Wherein, each conducting terminal respectively inwards extend and have electrically conducting contact by side, the conduction contact part of each conducting terminal
The position of the electrically conducting contact of corresponding conducting terminal is not extended to and the contact conducting that is laminated forms contact point.
The conduction contact part of each conducting terminal is respectively positioned on the inside of lock pin front end, lock pin and offers pressing
Hole, each contact point is respectively positioned in pressing hole.
The electrically conducting contact of each conducting terminal respectively with the electrically conducting contact of corresponding conducting terminal along the vertical direction
Set and mutually close pressing is fixed, formed respectively positioned at the rear end of each conducting terminal of lock pin lower surface and extend insulation
The pin of body rear end.
The contact flat spring convex is provided with convex closure.
It is fixedly connected between the electrically conducting contact of corresponding two conducting terminals by welding manner.
It is a kind of can both forward and reverse directions to the preparation method of slotting USB socket, comprise the following steps:
A, respectively making upper end subgroup and lower end subgroup, wherein, upper end subgroup and lower end subgroup include row conduction
Contact flat spring is formed on terminal, each conducting terminal respectively, each conducting terminal front end, which is respectively forwardly extended, has conduction to connect
Contact portion;
B, the mold cavity that spaced mode under more than upper end subgroup and lower end subgroup is put into insulating body respectively
In and positioned by mould, wherein, in the subgroup of upper end press by left-to-right order conducting terminal electrically conducting contact respectively successively
Corresponded with being pressed in the subgroup of lower end by the electrically conducting contact of the right conducting terminal to left order;
C, by the electrically conducting contact of each conducting terminal in the subgroup of the upper end conducting end corresponding with the subgroup of lower end respectively
Pressed and fixed by pressure between the electrically conducting contact of son, contact conducting formation connects between making two corresponding electrically conducting contacts
Contact;
D, will plastic material inject mold cavity in form insulating body, make shape between insulating body and each conducting terminal
Integral structure is formed into combining closely, the front end of wherein insulating body has protruded out lock pin, and the conduction of each conducting terminal connects
Contact portion is covered by inside insulating body, and the contact flat spring of conducting terminal stretches out lock pin upper surface, lower terminal in the subgroup of upper end
The contact flat spring of conducting terminal stretches out lock pin lower surface in group;
E, metal shell is installed to outside insulating body and pressed with insulating body and fixed.
Connected into the step A between the electrically conducting contact of each conducting terminal of upper end subgroup by terminal binder
Linked into an integrated entity, walked by terminal binder between one, the electrically conducting contact of each conducting terminal of lower end subgroup
Terminal binder is cut off before rapid E.
Linked into an integrated entity in the step A between the rear end of each conducting terminal of upper end subgroup by upper terminal material strip,
The rear end of each conducting terminal of lower end subgroup is extended respectively backward pin, leads between the pin rear end of each conducting terminal
Cross lower terminal material strip to link into an integrated entity, cut off upper terminal material strip before step E is carried out, and by pin bending and by lower terminal
Material strip is cut off.
Clamp force in the step C between the electrically conducting contact of corresponding conducting terminal by mould matched moulds presses solid
It is fixed.
Plastic material is the thermosetting high temperature resistant plastic material of saturation in the step D.
Beneficial effect of the present invention is:The present invention it is a kind of can both forward and reverse directions slotting USB socket is included metal shell,
Insulating body, conducting terminal, the front end of insulating body have protruded out lock pin, and the upper and lower ends face of lock pin respectively sets row's conducting end
Contact flat spring is formed on son, each conducting terminal respectively, the conducting terminal of lock pin upper surface is distinguished by by left-to-right order
The conducting terminal with lock pin lower surface connects one to one by by right to left order successively, and lock pin of the invention is two-sided to be entered
Row electrical connection so that plug can be electrically connected effectively from positive and negative either direction insertion socket, easy to use, is not in that direction is inserted
Wrong phenomenon, effectively protects plug and socket, connects simple and convenient, durable, improves operating efficiency;Wherein, each conducting terminal
Side, which is extended, respectively inwards electrically conducting contact, and the electrically conducting contact of each conducting terminal extends to corresponding conducting terminal respectively
The position of electrically conducting contact simultaneously forms contact point by the contact conducting that is strongly laminated, during the manufacturing, by each conducting end
Son is sequentially placed into the shaping mould type intracavitary of insulating body, is positioned by mould, and will be corresponding on each contacting points position
Electrically conducting contact is pressed, then is poured into high temperature plastic cement and be molded fixation in mold cavity, is not only made between two row's conducting terminals tightly
Close combination is fixed, with reference to solid and reliable, while also having molded the plastic structures such as insulating body and lock pin, structure and manufacture craft
Simply, production efficiency is improved, can be achieved to produce in enormous quantities, cost is saved, and without the connection for changing USB socket and circuit board
Structure, can be mounted directly on preferred circuit plate so as to directly substituting traditional one direction USB socket.
Brief description of the drawings:
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the front view of the present invention.
Fig. 3 is the structural representation that the present invention conceals metal shell.
Fig. 4 is the structural representation of conducting terminal of the present invention.
Fig. 5 is the structural representation before conducting terminal of the present invention is combined with insulating body.
Embodiment:
The present invention is further illustrated below in conjunction with the accompanying drawings, as shown in Fig. 1 ~ 5, and one kind of the invention can both forward and reverse directions
To slotting USB socket, include metal shell 1, the insulating body being arranged in metal shell 12, conducting terminal 3, insulating body
2 front end has protruded out lock pin 21, and the upper and lower ends face of lock pin 21 respectively sets row's conducting terminal 3, and conducting terminal 3 is embedded exhausted
Inside edge body 2, the contact flat spring 33 extended outside lock pin 21 is formed on each conducting terminal 3 respectively, positioned at lock pin 21
The contact flat spring 33 of the conducting terminal 3 of upper surface arches upward upwards, positioned at the contact flat spring 33 of the conducting terminal 3 of the lower surface of lock pin 21
Arch upward downwards, the conducting terminal 3 of the upper surface of lock pin 21 presses the conduction by left-to-right order respectively successively with the lower surface of lock pin 21
Terminal 3 connects one to one by by the right order to a left side, and lock pin 21 of the invention is two-sided to be electrically connected so that plug from
Positive and negative either direction insertion socket can be electrically connected effectively, easy to use, be not in the phenomenon of direction wrong plug, and effectively protection is inserted
Head and socket, connect simple and convenient, durable, improve operating efficiency.
Wherein, each conducting terminal 3 respectively inwards extend and have electrically conducting contact 32 by side, the conduction of each conducting terminal 3
Contact site 32 extends respectively to the position of the electrically conducting contact 32 of corresponding conducting terminal 3 and the contact conducting that is laminated forms contact
Point, during the manufacturing, each conducting terminal 3 is sequentially placed into the shaping mould type intracavitary of insulating body 2, positioned by mould,
And corresponding electrically conducting contact 32 is pressed on each contacting points position, then pours into high temperature plastic cement and is molded in mold cavity
It is fixed, not only make fixation of combining closely between two row's conducting terminals 3, with reference to solid and reliable, while also having molded insulating body
2 and the grade plastic structure of lock pin 21, structure and manufacture craft are simple, improve production efficiency, can be achieved to produce in enormous quantities, save into
This, and without the attachment structure for changing USB socket and circuit board, it is not necessary to change or redesign circuit board just can directly by
USB socket is directly assembled in electronic equipment, can be mounted directly to traditional so as to directly substitute on preferred circuit plate
One direction USB socket.
It is respectively 4 that conducting terminal 3 is often arranged on the upper and lower ends face of lock pin 21, the upper surface of lock pin 21 by left-to-right 1st, the
2, the 3rd, the 4th conducting terminal 3 be respectively successively with the lower surface of lock pin 21 by the right side to the 1st, the 2nd, the 3rd, the 4th, a left side
Conducting terminal 3 connects one to one, the 1st conduction during realizing that the 1st conducting terminal 3 is inserted with reverse side when front is inserted
Terminal 3 is correctly connected on same terminal position, and it to be respectively 8 that conducting terminal 3 is often arranged on the upper and lower ends face of certain lock pin 21
Root or other quantity.
Insulating body 2 is combined into one structure by integral injection molding mode and conducting terminal 3, it is ensured that conducting terminal 3
Do not loosen, long-term plug use will not destroy the structure of conducting terminal 3 so that electrical transmission is stable and reliable for performance, while also by two rows
Close pressing is fixed between conducting terminal 3, with reference to solid and reliable.Insulating body 2 is the thermosetting high temperature resistant plastic material of saturation,
With higher intensity, it will more reliably can be fixed together between the electrically conducting contact 32 of corresponding conducting terminal 3.
32 points of the electrically conducting contact of each conducting terminal 3 is respectively positioned on the inside of the front end of lock pin 21, lock pin 21 and offers pressure
Hole 22 is closed, each contact point is respectively positioned in pressing hole 22.
Electrically conducting contact 32 of the electrically conducting contact 32 of each conducting terminal 3 respectively with corresponding conducting terminal 3 is vertically square
Fixed to setting and mutually closely pressing, the distance pressed along the vertical direction is shorter, pressing is more convenient.Positioned at the lower surface of lock pin 21
The rear end of each conducting terminal 3 form the pin 34 for extending the rear end of insulating body 2 respectively, pin 34 can make bonding wire
Formula, SMT patch pcb board formulas or DIP insert the structures such as pcb board formula, to be applicable different occasions.USB socket can also be according to product space
Structure makes horizontal placement, vertical placement or edge-on placement.
The convex of contact flat spring 33 is provided with convex closure 35, by increasing capacitance it is possible to increase the elastic force at the position of contact flat spring 33 of conducting terminal 3.Phase
It is fixedly connected between the electrically conducting contact 32 for answering two conducting terminals 3 by welding manner, such as spot welding, scolding tin.
The invention also discloses it is a kind of can both forward and reverse directions to the preparation method of slotting USB socket, comprise the following steps:
S1, respectively making upper end subgroup and lower end subgroup, wherein, upper end subgroup and lower end subgroup include row conduction
Contact flat spring 33 is formed on terminal 3, each conducting terminal 3 respectively, each front end of conducting terminal 3, which is respectively forwardly extended, leads
Electrical contacts 32;
Linked into an integrated entity between the electrically conducting contact 32 of each conducting terminal 3 of upper end subgroup by terminal binder 36,
Linked into an integrated entity between the electrically conducting contact 32 of each conducting terminal 3 of lower end subgroup by terminal binder 36, upper end subgroup
Each conducting terminal 3 rear end between linked into an integrated entity by upper terminal material strip 37, each conducting terminal 3 of lower end subgroup
Rear end is extended respectively backward pin 34, is connected between the rear end of pin 34 of each conducting terminal 3 by lower terminal material strip 38
Integrally, prevent between upper end subgroup and each conducting terminal 3 of lower end subgroup in subsequent packages transport, electroplating surface, assembling
Etc. deform in post-order process or produce structural failure and after influenceing process assembling make;
S2, the mould type that spaced mode under more than upper end subgroup and lower end subgroup is put into insulating body 2 respectively
Positioned in chamber and by mould, wherein, distinguish in the subgroup of upper end by the electrically conducting contact 32 of the conducting terminal 3 by left-to-right order
Successively with being corresponded in the subgroup of lower end by the electrically conducting contact 32 by the right conducting terminal 3 to left order;
S3, lead the electrically conducting contact 32 of each conducting terminal 3 in the subgroup of upper end is corresponding with the subgroup of lower end respectively
Pressed and fixed by strong pressure between the electrically conducting contact 32 of electric terminal 3, make two corresponding electrically conducting contacts 32 indirectly
Tactile conducting forms contact point;Strong pressure is more than 45 ton forces so that more preferable connection can be realized between electrically conducting contact 32, is subtracted
Small resistor, being capable of high voltage withstanding and high current;It can be closed between the electrically conducting contact 32 of corresponding conducting terminal 3 by mould
The clamp force pressing of mould is fixed, simple in construction, easy to operate.
S4, plastic material injected insulating body 2 formed in mold cavity, make insulating body 2 and each conducting terminal 3 it
Between formed combine closely to form integral structure, the front end of wherein insulating body 2 has protruded out lock pin 21, each conducting terminal 3
Electrically conducting contact 32 be covered by inside insulating body 2, in the subgroup of upper end conducting terminal 3 contact flat spring 33 stretch out lock pin
The contact flat spring 33 of conducting terminal 3 stretches out the lower surface of lock pin 21 in 21 upper surfaces, lower end subgroup;Plastic material is the thermosetting of saturation
Property high temperature resistant plastic material;
S5, terminal binder 36 cut off, to ensure independently to turn between each conducting terminal 3;
S6, upper terminal material strip 37 cut off, and cut off by the bending of pin 34 and by lower terminal material strip 38, to ensure each conduction
Independently turned between terminal 3;
S7, metal shell 1 is installed to the outside of insulating body 2 and fixation is pressed with insulating body 2.
It can be electrically connected using the lock pin 21 of USB socket made from the inventive method is two-sided so that plug is from positive and negative
Either direction insertion socket can effectively electrically connect, it is easy to use, be not in the phenomenon of direction wrong plug, effectively protection plug and
Socket, connects simple and convenient, durable, improves operating efficiency;Conducting terminal 3 passes through integral with insulating body 2 in mold cavity
Injection molding makes fixation of combining closely between two row's conducting terminals 3, with reference to solid and reliable, and structure and manufacture craft are simple,
Production efficiency is improved, can be achieved to produce in enormous quantities, cost is saved, and without the attachment structure for changing USB socket and circuit board,
Need not change or redesign circuit board directly can just be directly assembled to USB socket in electronic equipment, can be mounted directly
So as to directly substituting traditional one direction USB socket on to preferred circuit plate.
Certainly, described above is only presently preferred embodiments of the present invention, therefore all structures according to described in present patent application scope
Make, the equivalent change or modification that feature and principle are done, be included in the range of present patent application.
Claims (3)
1. it is a kind of can both forward and reverse directions to the preparation method of slotting USB socket, it is characterised in that comprise the following steps:
A, respectively making upper end subgroup and lower end subgroup, wherein, upper end subgroup and lower end subgroup include row's conducting terminal,
Contact flat spring is formed respectively on each conducting terminal, and each conducting terminal front end, which is respectively forwardly extended, electrically conducting contact;
Linked into an integrated entity between the electrically conducting contact of each conducting terminal of upper end subgroup by terminal binder, lower end subgroup each
Linked into an integrated entity between the electrically conducting contact of conducting terminal by terminal binder;The rear end of each conducting terminal of upper end subgroup
Between linked into an integrated entity by upper terminal material strip, the rear end of each conducting terminal of lower end subgroup, which extends to have respectively backward, draws
Linked into an integrated entity between pin, the pin rear end of each conducting terminal by lower terminal material strip;
B, spaced mode under more than upper end subgroup and lower end subgroup is put into the mold cavity of insulating body simultaneously respectively
Positioned by mould, wherein, press and distinguished successively with by the electrically conducting contact of the conducting terminal of left-to-right order in the subgroup of upper end
Press and corresponded by the electrically conducting contact of the right conducting terminal to left order in terminal group;
C, by the electrically conducting contact of each conducting terminal in the subgroup of the upper end conducting terminal corresponding with the subgroup of lower end respectively
Pressed and fixed by pressure between electrically conducting contact, contact conducting forms contact between making two corresponding electrically conducting contacts
Point;
D, plastic material injected in mold cavity and form insulating body, make to form tight between insulating body and each conducting terminal
Close to combine to form integral structure, the front end of wherein insulating body has protruded out lock pin, the electrically conducting contact of each conducting terminal
It is covered by inside insulating body, the contact flat spring of conducting terminal is stretched out in lock pin upper surface, lower end subgroup in the subgroup of upper end
The contact flat spring of conducting terminal stretches out lock pin lower surface;
E, terminal binder cut off;
F, upper terminal material strip cut off, and cut off by pin bending and by lower terminal material strip;
G, metal shell is installed to outside insulating body and pressed with insulating body and fixed.
2. it is according to claim 1 it is a kind of can both forward and reverse directions to the preparation method of slotting USB socket, it is characterised in that:Institute
State to press by the clamp force of mould matched moulds between the electrically conducting contact of conducting terminal corresponding in step C and fix.
3. according to claim 1~2 any one it is a kind of can both forward and reverse directions to the preparation method of slotting USB socket, its
It is characterised by:Plastic material is the thermosetting high temperature resistant plastic material of saturation in the step D.
Priority Applications (1)
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CN201510133554.3A CN104795658B (en) | 2015-03-26 | 2015-03-26 | It is a kind of can both forward and reverse directions to slotting USB socket and preparation method thereof |
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CN201510133554.3A CN104795658B (en) | 2015-03-26 | 2015-03-26 | It is a kind of can both forward and reverse directions to slotting USB socket and preparation method thereof |
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CN104795658A CN104795658A (en) | 2015-07-22 |
CN104795658B true CN104795658B (en) | 2017-11-03 |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016188445A1 (en) * | 2015-05-26 | 2016-12-01 | 蔡周贤 | Forward-backward bidirectional insertion electrical connector, and terminal and elastic fastener thereof |
TWM541127U (en) * | 2015-08-26 | 2017-05-01 | Shenzhen Xindesheng Electronic Technology Co Ltd | Electrical connection terminal set structure |
CN105098513B (en) * | 2015-08-31 | 2018-02-23 | 广东雅联科技股份有限公司 | USB plug structure capable of being plugged in forward and reverse directions and manufacturing method thereof |
CN105119078A (en) * | 2015-09-14 | 2015-12-02 | 东莞宇球电子股份有限公司 | A USB plug connector with positive and negative insertion functions and its manufacturing method |
CN105514716B (en) * | 2015-12-31 | 2018-02-13 | 深圳市鑫桐源科技有限公司 | USB plug, signal switching circuit and USB data line |
CN106985337B (en) * | 2017-03-31 | 2019-01-11 | 维沃移动通信有限公司 | USB tongue piece processing method, USB tongue piece and mobile terminal |
CN109038165B (en) * | 2018-08-06 | 2020-04-24 | 广东纳特康电子股份有限公司 | Manufacturing process of waterproof connector with double-sided inserted PCB |
Family Cites Families (7)
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US7387539B2 (en) * | 2006-04-14 | 2008-06-17 | Rodney J. Trenne | Reversible universal serial bus connection interface for USB connectors and universal serial bus ports |
US20140206209A1 (en) * | 2013-01-24 | 2014-07-24 | Apple Inc. | Reversible usb connector |
CN103762479B (en) * | 2014-02-26 | 2016-02-10 | 东莞市星擎电子科技有限公司 | A kind of can the manufacture method of USB connector of double-side plug-in |
CN203850492U (en) * | 2014-04-30 | 2014-09-24 | 深圳市旺溢电子科技有限公司 | USB plug capable of being plugged in positive and negative directions |
CN204103150U (en) * | 2014-08-27 | 2015-01-14 | 潘成禄 | A kind of can both forward and reverse directions to insert USB plug |
CN204088648U (en) * | 2014-09-17 | 2015-01-07 | 深圳市同舟顺电子科技有限公司 | The USB socket connector of two-sided socket |
CN204516956U (en) * | 2015-03-26 | 2015-07-29 | 李亚飞 | A kind of USB socket that can be plugged in forward and reverse directions |
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