CN106025696A - Triple USB connector and production technology thereof - Google Patents
Triple USB connector and production technology thereof Download PDFInfo
- Publication number
- CN106025696A CN106025696A CN201610376419.6A CN201610376419A CN106025696A CN 106025696 A CN106025696 A CN 106025696A CN 201610376419 A CN201610376419 A CN 201610376419A CN 106025696 A CN106025696 A CN 106025696A
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- China
- Prior art keywords
- male
- plug
- interface
- rubber shell
- usb connector
- Prior art date
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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
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/627—Snap or like fastening
- H01R13/6271—Latching means integral with the housing
-
- 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
- H01R13/514—Bases; Cases composed as a modular blocks or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
Abstract
The invention discloses a triple USB connector and a production technology thereof. The triple USB connector comprises male heads and a female base, wherein the male heads are fixedly connected by a lock structure; each male head comprises a male head plastic shell and a plug; each male head plastic shell is of a semi-enclosed cavity; each plug is inserted into the corresponding male head plastic shell and is provided with a first anti-back stopper; and each male head plastic shell is provided with a second anti-back stopper. Compared with the prior art, a locking mode is adopted when the male heads and the female base of the triple USB connector are butted, so that the signal influence caused by vibration loosening in the vehicle running process is avoided; connector parts of the male heads are few and convenient to process; and the processing technology is simple. A TPU injection molding mode is adopted by the male heads of the connector, so that the condition that a product loses the function since the plastic shell falls off due to assembling and disassembling for multiple times is avoided. Three 90-degree DIP-welded fool-proof interface structures are adopted by a female head of the connector, so that an existing vehicle-mounted USB female base technology in the industry is broken through; and installation and use by a customer are facilitated by small-size fool-proof assembly welding plug-ins of three specifications.
Description
Technical field
The present invention relates to electronic applications, particularly relate to a kind of USB connector being not easily disconnected from and production technology thereof.
Background technology
USB(USB (universal serial bus)) the most progressively develop into the host-host protocol of a standard.Certainly, this development
Have benefited from the USB interface extensive application in numerous electronic products.Therefore, vehicle configures this kind of versabus equipment right and wrong
Chang Heli and wise selection.In the more than ten years in past, the application in various types of vehicles of the integrated communication technology is able to fast
Hail exhibition.Car radio system has become " main unit " in automobile the most, is responsible for entering extensive application and function device
Row Central co-ordination.
Meanwhile, electronic product (such as notebook computer, iPods, mobile phone, MP3 player and memory stick etc.) exists
Range of application in automobile is also being continuously increased, it is therefore necessary to ensure that data transmission between electronic product and existing mobile unit
Reliability；For the USB interface device gradually begun to use in current car, its adapter and cable are frequently not according to vehicle-mounted
Adverse circumstances design.Therefore, the design of the simplest circuit may not be exactly most successful design.The loose cable, suitable laid on equipment
Orchestration wire, especially shields poor connection, can substantially deteriorate the solenoid condition of vehicle interior.
Along with the development of automotive electronics and USB adapter are in the application of automotive field, on market, existing USB B/F cannot
Meet vehicle traveling process vibration signal and transmit the impact (vibration frequency is excessive, causes adapter to come off) caused；And JAE is existing
Some MX49 series connectors are monomer assembled, and processing part many (male end part up to 6 kinds) processing technique is complicated, and even
Connecing device reliability poor, repeatedly after assembly and disassembly, connector function district is easy to fall off with glue shell, causes main frame to be connected not with navigation
Good.
Summary of the invention
For weak point present in above-mentioned technology, the present invention provides a kind of three even formula USB connectors being not easily disconnected from,
Including male and female seat, described female seat is provided with three interfaces, and three interfaces are arranged in order and independent are connected with male, institute
Stating male and use the fixing connection of lock catch type structure, described male is made up of male contact rubber shell and plug, and described male contact rubber shell is half envelope
Closing cavity, described plug inserts in male contact rubber shell, and described plug is provided with the first anti-back screens, and described male contact rubber shell is provided with the
Two anti-back screens.
Wherein, described female seat is provided with the first locking key, and described first locking key is groove structure, is arranged on female seat with public
The aperture position of head docking, described male is provided with the second locking key, and described second locking key is projection cube structure, just with first
The groove structure adaptation of locking key embeds.
Wherein, described second anti-back screens is through-hole structure, and this through-hole structure is provided with two, is symmetricly set on male
On both sides symmetrical on glue shell.
Wherein, described male contact rubber shell and plug are TPU injection moulding integrated molding structure.
Wherein, described female seat includes that die body, outer iron-clad and interface, one end of described outer iron-clad are contained in die body, another
End stretches out die body, and is connected fixing with interface.
Wherein, described female seat be on three interfaces be injection moulding integrated molding structure.
Wherein, the interface in described female seat is provided with error-proof structure, and the pocket numbers on each of which interface top and position are not
With.
Wherein, the error-proof structure in described female seat uses the DIP welding manner of 90 degree, and is provided with two on first interface
Draw-in groove, is provided with a draw-in groove on the second interface, is positioned at the upper left corner of interface, also be provided with a draw-in groove, position on the 3rd interface
The upper right corner in interface.
The invention also discloses the production technologies of a kind of three company's formula USB connectors, this three companies formula USB connector includes male
And female seat, described male uses the fixing connection of lock catch type structure,
Described male is made up of male contact rubber shell and plug, and described plug one end is inserted in male contact rubber shell, and the other end is by welding side
Formula connects data wire, and the first anti-back screens on plug accommodating structure adaptation connection corresponding with in male contact rubber shell is fixed, data
Line and the weld of plug use the injection of PP membrane structure fixing, after described plug is fixed in male contact rubber shell, and outer injection molding
The external mold of TPU material,
The injection step of described TPU external mold is:
First by male contact rubber shell and plug at 80 DEG C--it is dried 2-3 hour at a temperature of 100 DEG C；
By the temperature constant of the mould used by molding at 50 degree；
Plasticizing pressure value in injection moulding process controls at 0.3--4MPA;
Rotating speed in injection moulding process controls at 30--75r/min;
The 5--10 second again dwell time in injection moulding process；
The cool time of injection moulding process controlled in the 20--60 second.
Wherein, the female seat that be connected suitable with male includes die body, outer iron-clad and interface, and described outer iron-clad loads die body
In, one end of outer iron-clad is fixing in inserting die body, and the other end passes through the DIP welding manner welding junction of 90 degree, and three interfaces
On be provided with error-proof structure.
The invention has the beneficial effects as follows: compared with prior art, the three of the present invention even formula connector male head and female seat docking
Shi Caiyong lock catch type, it is to avoid vehicle traveling process vibrations loosen the effect of signals caused；And the connector part of male is few, side
Just processing, processing technique is simple；Connector male head uses TPU to be molded into pattern, it is to avoid glue shell that repeatedly assembly and disassembly causes
Come off and make product lose function；Connector female end uses 3 kinds of interface error-proof structures of 90 DIP welding type, breaches in industry existing
Vehicle-mounted USB female seat technology, little with volume, 3 kinds of specification fool proof assembly welding plug-in units facilitate client to install and use.
Accompanying drawing explanation
Fig. 1 is male and female seat connection diagram in the embodiment of the present invention；
Fig. 2 is the male contact rubber shell connection diagram with plug of male in the embodiment of the present invention；
Fig. 3 is male perspective view in the embodiment of the present invention.
Fig. 4 is the attachment structure schematic diagram of male contact rubber shell, plug and data wire in the embodiment of the present invention；
Fig. 5 is male and data link linkage schematic diagram in the embodiment of the present invention；
Fig. 6 is how the quick-fried of master base structure in the embodiment of the present invention schemes；
Fig. 7 is the error-proof structure schematic diagram of 3 interfaces of female seat in the embodiment of the present invention.
Main element symbol description is as follows:
1, female seat 2, male
11, the first locking key 12, interface
13, die body 14, outer iron-clad
21, male contact rubber shell 22, plug
23, the second locking key 24, data wire
25, external mold 121, first interface
122, the second interface the 123, the 3rd interface
211, second anti-back screens the 221, first anti-back screens
222, PP membrane structure the 1211, first draw-in groove
1212, the second draw-in groove the 1221, the 3rd draw-in groove
1231, the 4th draw-in groove 2221, welding position.
Detailed description of the invention
In order to more clearly state the present invention, below in conjunction with the accompanying drawings the present invention is further described.
Referring to Fig. 1, the present invention provides a kind of three to connect formula USB connector, including male 2 and female seat 1, setting in female seat 1
Having three interfaces 12, and three interfaces 12 are arranged in order and are independently connected with male 2, male 2 uses lock catch type structure fixing even
Connecing, female seat 1 is provided with the first locking key 11, and the first locking key 11 is groove structure, is arranged on female seat 1 and opening that male 2 is docked
Mouthful position, male 2 is provided with the second locking key 23, and the second locking key 23 is projection cube structure, just recessed with the first locking key 11
Groove physical fit embeds, such buckle structure, even if vehicle vibration when, male 2 is also not easy from female 1 to loosen
Or come off, it is to avoid vehicle traveling process vibrations loosen the effect of signals caused.
Referring to Fig. 2, in the present embodiment, male 2 is made up of male contact rubber shell 21 and plug 22, and male contact rubber shell 21 is half envelope
Closing cavity, plug 22 inserts in male contact rubber shell 21, and the internal structure of male 2 is simple, is only made up of two parts, so adds
Work is got up more convenient, and processing technique is simple, and processing cost is the cheapest.
Please continue to refer to Fig. 3, in the present embodiment, plug 22 is provided with the first anti-back screens 221, and male contact rubber shell 21 sets
There is the second anti-back screens 211.Second anti-back screens 211 is through-hole structure, and this through-hole structure is provided with two, is symmetricly set on
On both sides symmetrical on male contact rubber shell 21.Arrange the second anti-back screens 211 beneficially data wire be fixed on male contact rubber shell 21 and
Difficult drop-off.First anti-back screens 221 is arranged on the middle part of plug 22, and is contained in male contact rubber shell 21, the first anti-back screens
221 is projection cube structure, is provided with the accommodating structure (not shown) suitable with the first anti-back screens 221 inside male contact rubber shell 21,
To prevent plug 2 from departing from male contact rubber shell 21, enhance the stability of male 2.
Referring to Fig. 4 and Fig. 5, in the present embodiment, plug 22 one end is inserted in male contact rubber shell 21, and the other end is by welding
Mode connects data wire 24, and the first anti-back screens 221 on plug 22 accommodating structure adaptation corresponding with in male contact rubber shell 21 is even
Connecing fixing, data wire 24 and the weld of plug 22 use PP membrane structure 222 injection fixing, and data wire 24 welds with plug 22
Position 2221 is contained in PP mode structure 222；In the present embodiment, after plug 22 is fixed in male contact rubber shell 21, outer injection becomes
The external mold 25 of type TPU material, TPU (Thermoplastic polyurethanes) entitled Polyurethane Thermoplastic Elastomer rubber
Glue, is a kind of (AB) N-shaped block linear polymer, and A represents polyester or the polyethers (molecular weight is 1000～6000) of high molecular,
Being referred to as long-chain, it is short chain that B represents containing 2～12 carbons glycol, and the intersegmental chemical bond of AB chain is to use diisocyanate.Note
The function moulded is that TPU is processed into required product, is divided into preformed, injection and machine and goes out the digital process of three phases.Note
Shooting machine divides plunger type and screw two kinds, in the present embodiment use screw-type injection machine because it be provided with uniform speed,
Plastify and melted.
When the moisture content of TPU is more than 0.2%, not only affects product appearance, and mechanical performance substantially degenerates, be molded by
Product poor flexibility, intensity is low.Therefore male contact rubber shell should be dried at a temperature of 80 DEG C～110 DEG C with plug before injection
2～3 hours.
In the present embodiment, injector barrel is lined with albronze, and screw rod chromium plating prevents abrasion.Screw slenderness ratio is 16；
Compression ratio 2.5/1 ~ 3.0/1.Feed stage length 0.5L, compression section 0.3L, metering section 0.2L.Check ring should be installed adjacent to screw rod
The place on top, prevents reflux and keeps maximum pressure.
In the present embodiment, injection volume should be the 40% ~ 80% of rated capacity, and processing TPU goods typically require low shear rate,
Thus be advisable with relatively low screw speed, in the present embodiment, the screw speed of TPU controls at 30--75r/min, raw to control
Produce cost.
The most important condition of moulding of TPU is impact plasticizing flowing and temperature, pressure and the time of cooling.These parameters are by shadow
Ring outward appearance and the performance of TPU product.Good processing conditions should be able to obtain uniform white to cream-coloured product.
Molding TPU process needs the temperature controlled to have barrel temperature, nozzle temperature and mold temperature.First two temperature is main
Affecting plasticizing and the flowing of TPU, latter temperature affects flowing and the cooling of TPU.
A. barrel temperature: selecting of barrel temperature is relevant with the hardness of TPU.The TPU melt temperature that hardness is high is high, barrel end
The maximum temperature of end is the highest.Barrel temperature scope used by processing TPU is 177 ~ 232 DEG C.In the present embodiment, use 200 DEG C.Barrel
The distribution of temperature from hopper side (rear end) to nozzle (front end) is only usually, and gradually rises, so that TPU temperature plateau ground rises
Reach homogenous plasticized purpose.
B. nozzle temperature: nozzle temperature is typically somewhat less than the maximum temperature of barrel, to prevent the melt can at through type nozzle
The sialorrhea phenomenon that can occur.Use the nozzle of self-locking if stopping sialorrhea, then nozzle temperature also can be controlled in barrel
In the range of maximum temperature.
C. mold temperature: TPU goods internal performance and apparent mass are affected the biggest by mold temperature.Its height is decided by
Many factors such as the crystallinity of TPU and the size of goods.Mold temperature is generally controlled by the cooling medium of constant temperature such as water,
TPU hardness is high, and degree of crystallinity is high, and mold temperature is the highest, and mold temperature is low, and melt freezes too early and produces streamline, and is unfavorable for
The growth of spherocrystal, makes goods degree of crystallinity low, it may appear that secondary crystallization process, thus causes the after-contraction of goods and the change of performance
Change.In the present embodiment, it is in function and the construction features of adapter, by the temperature constant of the mould used by molding at 50 degree,
So temperature both can guarantee that the performance of whole male 2, moreover it is possible to ensures his service life.
B. pressure
Injection moulding process is that pressure includes plasticizing pressure (back pressure) and injection pressure.During screw retreats, suffered by its top melt
Pressure is back pressure, is regulated by overflow valve.Increase back pressure and can improve melt temperature, lower plasticizing rate, make melt temperature
Uniformly, coloring material for mixing is uniform, and discharges melt gases, but can extend molding cycle.The back pressure of TPU is generally 0.3～4MPa.
Injection pressure is the pressure that TPU is executed by screw tip, and its effect is to overcome TPU to flow to the stream of die cavity from barrel
Dynamic resistance, to the speed of melt mold filling, and is compacted melt.TPU flow resistance and mold filling speed are closely related with melt viscosity,
And melt viscosity is directly related with TPU hardness and melt temperature, i.e. melt viscosity is not only decided by temperature and pressure, also determines
In TPU hardness and rate of deformation.Shear rate more high viscosity is the lowest；Shear rate is constant, and TPU hardness more high viscosity is the biggest.
Under conditions of shear rate is constant, viscosity with temperature increases and declines, but at high shear rates, viscosity is by temperature
Impact big unlike low shear rate.The injection pressure of TPU is 20 ~ 110MPa,.Dwell pressure is the one of injection pressure
Half, the dwell time controlled in the 5--10 second；The Zhang Yuhua dwell time of the USB connector in the present embodiment is 8 seconds, TPU now
Plastify the most uniform.
C. the time
Time needed for completing shot process is referred to as molding cycle.Molding cycle includes mould-filling time, dwell time, cooling
Time and other times (die sinking, the demoulding, mold closing etc.), directly affect labor productivity and utilization rate of equipment and installations.The molding cycle of TPU
Being determined generally by hardness, product thickness and configuration, the TPU hardness height cycle is short, and the plastic thickness cycle is long, plastic configuration Complicated Periodic
Long, molding cycle is also relevant with mold temperature.TPU cooling molding cycle is between 20 ~ 60s, and in the present embodiment, the cooling cycle is
30s。
D. injection speed
Injection speed depends mainly on the configuration of TPU goods.The goods that end face is thick need relatively low injection speed, and end face is thin, notes
Penetrate speed.
Referring to Fig. 6 and Fig. 7, in the present embodiment, the female seat 1 that be connected suitable with male 2 includes die body 13, outer iron-clad
14 and interface 12, one end of outer iron-clad 14 is contained in die body 13, and the other end stretches out die body 13, and is connected fixing with interface 12,
First locking key 11 is just arranged on the junction of interface 12 and outer iron-clad 14.In the present embodiment, the DIP welding of 90 degree is used
Mode welds 3 kinds of error-proof structures on 3 interfaces.Fool-proof design, also referred to as mistake proofing design, it is simply that design rational structure,
The assembling reducing assembler judges the time, prevents user error from assembling, and to improve work efficiency, reduces cost.Due to this reality
Execute in example, female seat 1 is provided with three interfaces 12, respectively first interface the 121, second interface 122 and the 3rd interface 123, three
Individual interface is arranged in order and independent is connected with male, and female seat 1 be upper three interface be injection moulding integrated molding structure.This enforcement
Fool-proof design in example is different with position at the pocket numbers making each interface top.Specifically, in the present embodiment, female seat 1
On error-proof structure use the DIP welding manner of 90 degree, and on first interface 121, be provided with two draw-in grooves, respectively first blocks
Groove 1211 and the second draw-in groove 1212, lay respectively at the two ends, left and right of first class open top end, is provided with on the second interface 122
Three draw-in grooves 1221, are positioned at the upper left corner of the second interface 122, are provided with the 4th draw-in groove 1231 on the 3rd interface 123, be positioned at the 3rd and connect
The upper right corner of mouth.This kind of fool-proof design, effectively prevent original paper in misconnection causes adapter and burns out or malformation.But this reality
Executing one of them typical embodiment that example is only the present invention, the interface of female seat 1 of the present invention is not limited to 3, it is also possible to set
Being set to 4,5 the most, and the fool-proof design on each interface is also not limited to described in the present embodiment to obtain draw-in groove knot
Structure, obtaining as long as being provided with fool-proof design at the seam of the USB connector of this structure, all including protection scope of the present invention in.
Present invention have an advantage that
1) lock catch type is used when the three of the present invention even formula connector male head and female seat docking, it is to avoid vehicle traveling process vibrations pine
The dynamic effect of signals caused；
2) connector part of male is few, and convenient processing, processing technique is simple；
3) connector male head uses TPU to be molded into pattern, it is to avoid glue shell that repeatedly assembly and disassembly causes comes off and makes product lose
Function；
4) connector female end uses 3 kinds of interface error-proof structures of 90 DIP welding type, breaches existing vehicle-mounted USB female seat skill in industry
Art, little with volume, 3 kinds of specification fool proof assembly welding plug-in units facilitate client to install and use.
The several specific embodiments being only the present invention disclosed above, but the present invention is not limited to this, any ability
What the technical staff in territory can think change all should fall into protection scope of the present invention.
Claims (10)
1. an even formula USB connector, it is characterised in that include male and female seat, described female seat is provided with three interfaces,
And three interfaces are arranged in order and independent are connected with male, described male uses lock catch type structure to fix connection, described male by
Male contact rubber shell and plug composition, described male contact rubber shell is semiclosed cavity, and described plug inserts in male contact rubber shell, on described plug
Being provided with the first anti-back screens, described male contact rubber shell is provided with the second anti-back screens.
The most according to claim 1 three connect formula USB connector, it is characterised in that described female seat is provided with the first locking key,
Described first locking key is groove structure, is arranged on the aperture position that female seat is docked with male, and described male is provided with the second lock
Button, described second locking key is projection cube structure, and just the groove structure adaptation with the first locking key embeds.
The most according to claim 1 three connect formula USB connector, it is characterised in that described second anti-back screens is through hole knot
Structure, and this through-hole structure is provided with two, is symmetricly set on male contact rubber shell on the both sides of symmetry.
The most according to claim 1 three connect formula USB connector, it is characterised in that described male contact rubber shell and plug are TPU note
Mould integrated formed structure.
The most according to claim 1 three connect formula USB connector, it is characterised in that described female seat includes die body, outer iron-clad
And interface, one end of described outer iron-clad is contained in die body, and the other end stretches out die body, and is connected fixing with interface.
The most according to claim 3 three even formula USB connectors, it is characterised in that described female seat be on three interfaces be
Injection moulding integrated molding structure.
The most according to claim 3 three connect formula USB connector, it is characterised in that the interface in described female seat is provided with anti-
Slow-witted structure, the pocket numbers on each of which interface top is different with position.
The most according to claim 5 three connect formula USB connector, it is characterised in that the error-proof structure in described female seat uses
The DIP welding manner of 90 degree, and on first interface, it is provided with two draw-in grooves, the second interface is provided with a draw-in groove, is positioned at and connects
The upper left corner of mouth, also is provided with a draw-in groove on the 3rd interface, is positioned at the upper right corner of interface.
9. the production technology connecting formula USB connector, it is characterised in that include male and female seat, described male uses lock
Buckle structure is fixing to be connected,
Described male is made up of male contact rubber shell and plug, and described plug one end is inserted in male contact rubber shell, and the other end is by welding side
Formula connects data wire, and the first anti-back screens on plug accommodating structure adaptation connection corresponding with in male contact rubber shell is fixed, data
Line and the weld of plug use the injection of PP membrane structure fixing, after described plug is fixed in male contact rubber shell, and outer injection molding
The external mold of TPU material,
The injection step of described TPU external mold is:
First by male contact rubber shell and plug at 80 DEG C--it is dried 2-3 hour at a temperature of 100 DEG C；
By the temperature constant of the mould used by molding at 50 degree；
Plasticizing pressure value in injection moulding process controls at 0.3--4MPA;
Rotating speed in injection moulding process controls at 30--75r/min;
The 5--10 second again dwell time in injection moulding process；
The cool time of injection moulding process controlled in the 20--60 second.
The most according to claim 8 three production technologies connecting formula USB connector, it is characterised in that company suitable with male
The female seat connect includes die body, outer iron-clad and interface, and described outer iron-clad loads in die body, and one end of outer iron-clad is solid in inserting die body
Fixed, the other end passes through the DIP welding manner welding junction of 90 degree, and is provided with error-proof structure on three interfaces.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610376419.6A CN106025696B (en) | 2016-05-31 | 2016-05-31 | Three connect formula USB connector and its production technology |
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|---|---|---|---|
| CN201610376419.6A CN106025696B (en) | 2016-05-31 | 2016-05-31 | Three connect formula USB connector and its production technology |
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| CN106025696B CN106025696B (en) | 2019-01-04 |
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| CN108591657A (en) * | 2018-05-25 | 2018-09-28 | 公安消防部队士官学校 | A kind of rescue engineering machinery auxiliary forcible entry device |
| CN115377731A (en) * | 2022-10-26 | 2022-11-22 | 东莞市鸿儒连接器有限公司 | Female socket and waterproof connector capable of realizing module combination |
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| CN107234976A (en) * | 2017-06-28 | 2017-10-10 | 胜蓝科技股份有限公司 | A kind of New-type charge rifle and its manufacture method |
| CN108591657A (en) * | 2018-05-25 | 2018-09-28 | 公安消防部队士官学校 | A kind of rescue engineering machinery auxiliary forcible entry device |
| CN108591657B (en) * | 2018-05-25 | 2024-04-19 | 公安消防部队士官学校 | Rescue engineering machinery auxiliary breaking device |
| CN115377731A (en) * | 2022-10-26 | 2022-11-22 | 东莞市鸿儒连接器有限公司 | Female socket and waterproof connector capable of realizing module combination |
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