CN205752716U - There is the adapter of high intensity and anti-EMI function - Google Patents

There is the adapter of high intensity and anti-EMI function Download PDF

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Publication number
CN205752716U
CN205752716U CN201620421214.0U CN201620421214U CN205752716U CN 205752716 U CN205752716 U CN 205752716U CN 201620421214 U CN201620421214 U CN 201620421214U CN 205752716 U CN205752716 U CN 205752716U
Authority
CN
China
Prior art keywords
fore shell
lower casing
upper casing
casing
flange
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.)
Active
Application number
CN201620421214.0U
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Chinese (zh)
Inventor
金海伟
陶武松
王钰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lianji Precision Electronics Co.,Ltd.
Original Assignee
DONGGUAN LIANJI ELECTRIC INDUSTRY Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
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Application granted granted Critical
Publication of CN205752716U publication Critical patent/CN205752716U/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/502Bases; Cases composed of different pieces
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581Shield structure
    • H01R13/6585Shielding material individually surrounding or interposed between mutually spaced contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • H01R13/6593Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable the shield being composed of different pieces

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

This utility model discloses a kind of adapter with high intensity and anti-EMI function, include connector body, upper casing and lower casing, this upper casing and lower casing are coated on connector body tail end, this connector body includes plastic body, be installed on plastic body plural conductive terminal and the fore shell being placed on plastic body front end, this fore shell rear end has been wholely set fore shell flange and positioning rib, forms locating slot between this fore shell flange and positioning rib;This upper casing front end correspondence locating slot is provided with upper casing flange, and this lower casing front end correspondence locating slot is provided with lower casing flange, and the upper casing flange of this upper casing and the lower casing flange of lower casing are respectively embedded in the locating slot of fore shell.Thereby, by utilizing upper lower casing upper overturning and the coordinating of locating slot on fore shell, make fore shell, upper casing and lower casing three combine closely, improve adapter intensity and EMI suppression performance.

Description

There is the adapter of high intensity and anti-EMI function
Technical field
This utility model relates to field of connectors technology, refers in particular to a kind of adapter with high intensity and anti-EMI function.
Background technology
There are traffic, communication, network, IT, medical treatment, household electrical appliances etc. in the main supporting field of electric connector, the fast development of supporting field product technology level and the quick growth in market thereof, draws the development of connector technique forcefully.Up to the present, adapter have evolved into that product category is complete, description abundant, structural shape is various, major field segmentation, industrial characteristic substantially, the seriation of standards system specification and specialized product.Adapter product is when dispatching from the factory, will be through reliability testing, the most qualified with detection product, existing adapter, during reliability testing, applies power F (F1, F2, F3, F4) as it is shown in figure 1, the power of an axial direction N backward can be produced, if adapter self does not have good fixed structure, it is easy to get loose and causes losing efficacy, and, existing adapter is the most perfect in EMI suppression performance.Therefore, tackle existing adapter and improve, to solve the problems referred to above.
Utility model content
In view of this, this utility model is for the disappearance of prior art existence, its main purpose is to provide a kind of adapter with high intensity and anti-EMI function, by utilizing upper and lower shell upper overturning and the coordinating of locating slot on fore shell, make fore shell, upper casing and lower casing three combine closely, improve adapter intensity, strengthen product axial direction stress-bearing capability, strengthen product steadiness, improve adapter EMI suppression performance simultaneously.
For achieving the above object, this utility model uses such as purgation technical scheme:
A kind of adapter with high intensity and anti-EMI function, include connector body, upper casing and lower casing, this upper casing and lower casing are coated on connector body tail end, described connector body includes plastic body, be installed on plastic body plural conductive terminal and the fore shell being placed on plastic body front end, this fore shell rear end has been wholely set fore shell flange and positioning rib, forms locating slot between this fore shell flange and positioning rib;This upper casing front end correspondence locating slot is provided with upper casing flange, and this lower casing front end correspondence locating slot is provided with lower casing flange, and the upper casing flange of this upper casing and the lower casing flange of lower casing are respectively embedded in the locating slot of fore shell.
As a kind of preferred version: be respectively arranged with location buckle on described fore shell roof and diapire, on the correspondence fore shell roof of upper casing front end, position buckle be provided with upper casing button hole, on the correspondence fore shell diapire of lower casing front end, position buckle be provided with lower casing button hole, position buckle on fore shell roof to be inserted in upper casing button hole, fore shell diapire positions buckle and is inserted in lower casing button hole.
As a kind of preferred version: described upper casing flange both sides are respectively arranged with the first concaveconvex structure, are respectively arranged with the second concaveconvex structure matched with the first concaveconvex structure in lower casing flange both sides, and this first concaveconvex structure and the second concaveconvex structure are engaged each other.
As a kind of preferred version: be provided with the riveted construction making both be fixed to one another on described upper casing and lower casing, this riveted construction includes the rivet hole being arranged on upper casing and the rivet being integrally formed on lower casing corresponding to rivet hole, and rivet is integrally formed at lower case side wall upper edge on lower casing, on upper casing, rivet hole correspondence rivet is arranged at upper casing roof both sides, rivet passes rivet hole, and riveting is outside rivet hole.
As a kind of preferred version: be respectively arranged with a recess, upper casing button hole and lower casing button hole on described upper casing roof and lower casing diapire and be respectively arranged in this recess.
As a kind of preferred version: be arranged at intervals with two location buckles on described fore shell roof, close up on fore shell diapire and be provided with two location buckles, on upper casing roof, position buckle on corresponding fore shell roof be arranged at intervals with two upper casing button holes, on lower casing diapire, position buckle on corresponding fore shell diapire be provided with a lower casing button hole, on fore shell roof, two location buckles are inserted on upper casing roof in two upper casing button holes respectively, and the two location buckles that fore shell diapire closes up setting are inserted in the lower casing button hole on lower casing diapire.
As a kind of preferred version: be provided with button block in described upper case side wall, in lower case side wall, corresponding button block is provided with catching groove, and button block is buckled in catching groove.
As a kind of preferred version: being provided with fixture block on described plastic body, to being provided with draw-in groove by fixture block on fore shell, fixture block is stuck in draw-in groove.
As a kind of preferred version: described plastic body rear end connects has one for the coil holder of fixed cable.
As a kind of preferred version: described positioning rib is integrally formed at fore shell tail end in the form of a ring, and is positioned on front side of fore shell flange.
This utility model compared with prior art has clear advantage and beneficial effect, specifically, as shown from the above technical solution, by upper casing flange and lower casing flange are respectively embedded in the locating slot of fore shell, so that fore shell, upper casing and lower casing three combine closely, form three layers of shielding construction, be obviously improved the EMI suppression performance of adapter;Simultaneously, upper and lower shell upper overturning and the coordinating of locating slot on fore shell, it is upwardly formed a counteracting force forward at connector shaft, improves product axial direction stress-bearing capability, simultaneously, because upper and lower shell flange is provided with concaveconvex structure, when injection molded, will not open outward at upper and lower shell flange, can effectively prevent the inefficacy that gets loose between fore shell and upper and lower shell, it is greatly promoted adapter steadiness, enhances adapter overall construction intensity.
For more clearly illustrating architectural feature of the present utility model and effect, it is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is assembling and the stress schematic diagram of this utility model;
Fig. 2 is that another visual angle of this utility model assembles schematic perspective view;
Fig. 3 is the adapter partial schematic sectional view of this utility model;
Fig. 4 is the adapter decomposing schematic representation of this utility model;
Fig. 5 is that the fore shell of this utility model separates with plastic body and dispersive stress schematic diagram after fore shell stress;
Fig. 6 be this utility model fore shell stress after dispersive stress schematic diagram;
Fig. 7 is the upper casing schematic perspective view of this utility model;
Fig. 8 is the lower casing schematic perspective view of this utility model.
Accompanying drawing identifier declaration:
10, connector body 11, plastic body
111, fixture block 12, conducting terminal
13, coil holder 14, fore shell
141, fore shell flange 142, positioning rib
143, location buckle 144, locating slot
145, draw-in groove 20, upper casing
21, upper casing flange 22, recess
23, upper casing button hole 24, button block
25, rivet hole the 26, first concaveconvex structure
30, lower casing 31, lower casing flange
32, recess 33, lower casing button hole
34, catching groove 35, rivet
36, the second concaveconvex structure 40, cable
F, Impact direction N, axial direction.
Detailed description of the invention
This utility model as shown in Figures 1 to 8, a kind of adapter with high intensity and anti-EMI function, include connector body 10, upper casing 20 and lower casing 30, wherein:
This connector body 10 includes plastic body 11, be installed on plastic body 11 plural conductive terminal 12, it is connected to plastic body 11 rear end for the coil holder 13 of fixed cable 40 and the fore shell 14 that is placed on plastic body 11 front end, this plastic body 11 is provided with fixture block 111;This fore shell 14 rear end has been wholely set fore shell flange 141, positioning rib 142 and location buckle 143, this fore shell flange 141 is the most vertically outside fore shell 14, this positioning rib 142 is integrally formed at fore shell 14 tail end in the form of a ring, and it is positioned on front side of fore shell flange 141, locating slot 144 is formed between this fore shell flange 141 and positioning rib 142, this location buckle 143 is arranged on fore shell 14 roof and diapire, and on fore shell 14 roof, it is arranged at intervals with two location buckles 143, close up on fore shell 14 diapire and be provided with two location buckles 143, additionally on fore shell 14, on corresponding plastic body 11, fixture block 111 is provided with draw-in groove 145, fixture block 111 is stuck in draw-in groove 145;Closing up two location buckles 143 of setting on this fore shell 14 roof on spaced two location buckles 143 and fore shell 14 diapire, form the location structure distribution of triangle, can strengthen fore shell 14 and upper casing 20 and lower casing 30 coordinates steadiness.
The locating slot 144 of this upper casing 20 front end correspondence fore shell 14 is provided with upper casing flange 21, this upper casing flange 21 is extended downward vertically by roof, being provided with a recess 22 on upper casing 20 roof, in this recess 22, on corresponding fore shell 14 roof, two location buckles 143 are arranged at intervals with two upper casing button holes 23;Button block 24 it is provided with on upper casing 20 sidewall.
The locating slot 144 of this lower casing 30 front end correspondence fore shell 14 is provided with lower casing flange 31, and this lower casing flange 31 is extended vertically upwards by diapire;On lower casing 30 diapire, it is provided with a recess 32, in this recess 32, is provided with lower casing button hole 33;And corresponding upper casing 20 upper lump 24 is provided with catching groove 34 on lower casing 30 sidewall;Above-mentioned fore shell 14, upper casing 20 and lower casing 30 upper overturning are all vertically arranged, and can strengthen the compactness that is fitted to each other;Recess 32 and recess 22 can strengthen upper and lower shell intensity.
It is provided with, on upper casing 20 and lower casing 30, the riveted construction making both be fixed to one another, this riveted construction includes the rivet hole 25 being arranged on upper casing 20 and the rivet 35 being integrally formed on lower casing 30 corresponding to rivet hole 25, on this lower casing 30, rivet 35 is integrally formed at lower casing 30 sidewall upper edge, and on this upper casing 20, the corresponding rivet 35 of rivet hole 25 is arranged at upper casing 20 roof both sides.
This fore shell 14, upper casing 20 and lower casing 30 matching relationship: this upper casing 20 and lower casing 30 are coated on connector body 10 tail end, the upper casing flange 21 of this upper casing 20 is respectively embedded in the locating slot 144 of fore shell 14 with the lower casing flange 31 of lower casing 30;Position buckle 143 on the roof of fore shell 14 to be inserted in upper casing button hole 23, the diapire of fore shell 14 positions buckle 143 and is inserted in lower casing button hole 33;The rivet 35 of lower casing 30 is riveting in outside the rivet hole 25 of upper casing 20;Upper casing 20 upper lump 24 is buckled in the catching groove 34 of lower casing 30.
Principle of the present utility model is as follows:
1, form locating slot between fore shell rear end flange (semi-drawing is processed to form) and fore shell positioning rib, and coordinate the flange on upper and lower shell to form mutual buckle structure, product strength and EMI characteristic can be improved;Product is when by lift heavy direction active force, it is transmitted to fore shell by upper and lower shell upper overturning, because fore shell is semi-drawing integral type flange, so unidirectional for lift heavy power can be disperseed (stress is disperseed by flange as shown in Figure 5,6), improve product ability to bear;And upper and lower shell is stretching shell structure, while ensureing casing rigidity, it is possible to provide preferably shielding properties.
2, coincidence between upper and lower shell combine effective contact of riveted construction, forms effective shield loop, makes adapter possess the EMI characteristic of excellence, meanwhile, improve product bulk strength further.
3. between upper and lower shell, the concaveconvex structure of flange both sides coordinates, and forms the supporting construction of multiaspect so that product, when injection mo(u)lding, will not be opened outward at upper and lower shell flange, and product structure intensity is high.
4, by location buckle and coordinating of positioning button hole between upper and lower shell with fore shell, make upper and lower shell and fore shell linking steady character higher, improve product strength further.
5, upper and lower shell is combined closely with fore shell with coordinating of catching groove by button block, improves connector shell molding and enters because pressure is produced outer Zhang Wenti, improves product strength.
Design focal point of the present utility model is, by upper casing flange and lower casing flange being respectively embedded in the locating slot of fore shell, so that fore shell, upper casing and lower casing three combine closely, forms three layers of shielding construction, is obviously improved the EMI suppression performance of adapter;Simultaneously, upper and lower shell upper overturning and the coordinating of locating slot on fore shell, it is upwardly formed a counteracting force forward at connector shaft, improves product axial direction stress-bearing capability, simultaneously, because upper and lower shell flange is provided with concaveconvex structure, when injection molded, will not open outward at upper and lower shell flange, can effectively prevent the inefficacy that gets loose between fore shell and upper and lower shell, it is greatly promoted adapter steadiness, enhances adapter overall construction intensity.
The above, it it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore every according to technical spirit of the present utility model to any trickle amendment made for any of the above embodiments, equivalent variations and modification, all still fall within the range of technical solutions of the utility model.

Claims (10)

1. an adapter with high intensity and anti-EMI function, include connector body, upper casing and lower casing, this upper casing and lower casing are coated on connector body tail end, it is characterized in that: described connector body includes plastic body, the plural conductive terminal that is installed on plastic body and the fore shell being placed on plastic body front end, this fore shell rear end has been wholely set fore shell flange and positioning rib, forms locating slot between this fore shell flange and positioning rib;This upper casing front end correspondence locating slot is provided with upper casing flange, and this lower casing front end correspondence locating slot is provided with lower casing flange, and the upper casing flange of this upper casing and the lower casing flange of lower casing are respectively embedded in the locating slot of fore shell.
The most according to claim 1, there is the adapter of high intensity and anti-EMI function, it is characterized in that: on described fore shell roof and diapire, be respectively arranged with location buckle, on the correspondence fore shell roof of upper casing front end, position buckle be provided with upper casing button hole, on the correspondence fore shell diapire of lower casing front end, position buckle be provided with lower casing button hole, position buckle on fore shell roof to be inserted in upper casing button hole, fore shell diapire positions buckle and is inserted in lower casing button hole.
The most according to claim 1, there is the adapter of high intensity and anti-EMI function, it is characterized in that: described upper casing flange both sides are respectively arranged with the first concaveconvex structure, be respectively arranged with the second concaveconvex structure matched with the first concaveconvex structure in lower casing flange both sides, this first concaveconvex structure and the second concaveconvex structure are engaged each other.
The most according to claim 1, there is the adapter of high intensity and anti-EMI function, it is characterized in that: on described upper casing and lower casing, be provided with the riveted construction making both be fixed to one another, this riveted construction includes the rivet hole being arranged on upper casing and the rivet being integrally formed on lower casing corresponding to rivet hole, and rivet is integrally formed at lower case side wall upper edge on lower casing, on upper casing, rivet hole correspondence rivet is arranged at upper casing roof both sides, rivet passes rivet hole, and riveting is outside rivet hole.
The most according to claim 2, there is the adapter of high intensity and anti-EMI function, it is characterised in that: it is respectively arranged with a recess, upper casing button hole and lower casing button hole on described upper casing roof and lower casing diapire and is respectively arranged in this recess.
The most according to claim 2, there is the adapter of high intensity and anti-EMI function, it is characterized in that: on described fore shell roof, be arranged at intervals with two location buckles, close up on fore shell diapire and be provided with two location buckles, on upper casing roof, position buckle on corresponding fore shell roof be arranged at intervals with two upper casing button holes, on lower casing diapire, position buckle on corresponding fore shell diapire be provided with a lower casing button hole, on fore shell roof, two location buckles are inserted on upper casing roof in two upper casing button holes respectively, the two location buckles closing up setting on fore shell diapire are inserted in the lower casing button hole on lower casing diapire.
The most according to claim 1, there is the adapter of high intensity and anti-EMI function, it is characterised in that: being provided with button block in described upper case side wall, in lower case side wall, corresponding button block is provided with catching groove, and button block is buckled in catching groove.
The most according to claim 1, there is the adapter of high intensity and anti-EMI function, it is characterised in that: being provided with fixture block on described plastic body, to being provided with draw-in groove by fixture block on fore shell, fixture block is stuck in draw-in groove.
The most according to claim 1, there is the adapter of high intensity and anti-EMI function, it is characterised in that: described plastic body rear end connects has one for the coil holder of fixed cable.
The most according to claim 1, there is the adapter of high intensity and anti-EMI function, it is characterised in that: described positioning rib is integrally formed at fore shell tail end in the form of a ring, and is positioned on front side of fore shell flange.
CN201620421214.0U 2015-12-31 2016-05-10 There is the adapter of high intensity and anti-EMI function Active CN205752716U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201521125551 2015-12-31
CN2015211255517 2015-12-31

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CN201610307367.7A Active CN105826745B (en) 2015-12-31 2016-05-10 Connector with high intensity and anti-EMI function

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105826745A (en) * 2015-12-31 2016-08-03 东莞联基电业有限公司 Connector with high strength and anti-EMI function

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9666995B1 (en) * 2016-08-08 2017-05-30 Te Connectivity Corporation EMI containment cage member

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Publication number Priority date Publication date Assignee Title
FR2703840B1 (en) * 1993-04-05 1995-06-16 Eurocopter France Electrical connector provided with a plurality of connection modules arranged in rows and columns.
GB2344701B (en) * 1998-12-09 2003-03-12 All Best Electronics Co Ltd An electrical connector
TWM258443U (en) * 2004-05-13 2005-03-01 Advanced Connectek Inc Improved connector with a transmission interface
CN203589305U (en) * 2013-10-09 2014-05-07 东莞联基电业有限公司 Electric connector
CN203574158U (en) * 2013-10-23 2014-04-30 郑宗远 Reinforced anti-interference HDMI joint
CN203607638U (en) * 2013-12-06 2014-05-21 深圳市创益五金精密模具有限公司 HDMI male plug with EMI shielding shell
CN203774530U (en) * 2014-01-17 2014-08-13 东莞联基电业有限公司 HDMI electric connector
CN205752716U (en) * 2015-12-31 2016-11-30 东莞联基电业有限公司 There is the adapter of high intensity and anti-EMI function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105826745A (en) * 2015-12-31 2016-08-03 东莞联基电业有限公司 Connector with high strength and anti-EMI function
CN105826745B (en) * 2015-12-31 2018-11-06 东莞联基电业有限公司 Connector with high intensity and anti-EMI function

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Publication number Publication date
CN105826745B (en) 2018-11-06
CN105826745A (en) 2016-08-03

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C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20200915

Address after: 523000 Guangdong Province, Dongguan city Changan town usha community Chen Wu industrial zone sixth Beach Road No. 29 A District

Patentee after: INTERCONNECT PRODUCTS Ltd.

Address before: 523000 Guangdong Province, Dongguan city Changan Town Industrial Zone sixth Beach Road usha Dongguan based Electronics Company Limited

Patentee before: FREEPORT RESOURCES ENTERPRISES Corp.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20211230

Address after: 523000 room 212, building 3, No. 42, Muxuan Chuangye 1st Road, Changping Town, Dongguan City, Guangdong Province

Patentee after: Guangdong Lianji Precision Industry Co.,Ltd.

Address before: 523000 District A, 29 Beach Road, Chen Wu Sixth Industrial Zone, Changan Town, Dongguan, Guangdong.

Patentee before: INTERCONNECT PRODUCTS Ltd.

CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 523000, No. 138 Gangjian Road, Changping Town, Dongguan City, Guangdong Province

Patentee after: Lianji Precision Electronics Co.,Ltd.

Country or region after: Zhong Guo

Address before: 523000 room 212, building 3, No. 42, Muxuan Chuangye 1st Road, Changping Town, Dongguan City, Guangdong Province

Patentee before: Guangdong Lianji Precision Industry Co.,Ltd.

Country or region before: Zhong Guo