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WO2016058353A1 - Élément couvrant de blindage et carte de circuit imprimé - Google Patents

Élément couvrant de blindage et carte de circuit imprimé Download PDF

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Publication number
WO2016058353A1
WO2016058353A1 PCT/CN2015/077497 CN2015077497W WO2016058353A1 WO 2016058353 A1 WO2016058353 A1 WO 2016058353A1 CN 2015077497 W CN2015077497 W CN 2015077497W WO 2016058353 A1 WO2016058353 A1 WO 2016058353A1
Authority
WO
WIPO (PCT)
Prior art keywords
partition wall
pcb
cover
elastic piece
fixing
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.)
Ceased
Application number
PCT/CN2015/077497
Other languages
English (en)
Chinese (zh)
Inventor
卫东
张煜
王峰
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.)
ZTE Corp
Original Assignee
ZTE Corp
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.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Publication of WO2016058353A1 publication Critical patent/WO2016058353A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields

Definitions

  • the utility model relates to the field of interference signal shielding of electronic devices, in particular to a shielding cover and a printed circuit board (PCB).
  • PCB printed circuit board
  • the shielding cover includes a cover body and a partition wall.
  • the cover body shields the entire PCB area to be shielded from interference to external devices, and the partition wall separates different devices in the PCB area to avoid mutual interference between the devices.
  • the existing shield is generally a metal integrated shield.
  • the screw is usually connected to the PCB by screws. Due to the influence of mechanical stress, the thickness of the partition is generally 2 mm. Further, considering During the installation, the collision with the device on the PCB, the device should be kept far away from the shield (including the cover and the partition) (usually 2mm), which increases the design area of the PCB.
  • the utility model provides at least one of the above problems to provide a shield cover and a PCB board, which can reduce the design area of the PCB board.
  • the present invention provides a shield for shielding devices on a PCB.
  • the shield includes a cover and a partition, and the partition includes a spring that contacts the cover.
  • the partition wall in the above embodiment is an integrally formed elastic piece.
  • the cover body in the above embodiment includes an upper cover and a side wall extending downwardly from the upper cover, and the elastic piece in the partition wall is in elastic contact with the cover body.
  • the portion of the elastic piece used in the above embodiment for elastic contact with the side wall is a curved elastic piece.
  • the portion of the elastic piece used in the above embodiment for elastic contact with the upper cover is a bifurcated elastic piece.
  • the partition wall in the above embodiment is provided with a fixing member for fixing the elastic piece.
  • the fixing member in the above embodiment is a fisheye fixing member.
  • the present invention also provides a PCB board.
  • the PCB board is provided with a fixing area for fixing the inner shrapnel of the shield case according to any one of claims 1 to 7.
  • the fixing region is provided with a tin layer in the above embodiment.
  • the fixing region is provided with a fixing hole matched with the fixing member.
  • the shield cover and the PCB board provided by the utility model replace the metal partition wall in the existing shield cover by using the elastic piece. Because the thickness of the elastic piece is thinner, the original metal partition wall is significantly reduced, and the PCB area occupied by the partition wall is reduced. In turn, the PCB design area can be reduced; further, the shrapnel can be preferentially soldered on the PCB before the device is placed on the PCB, thereby avoiding the collision of the shield with the device on the PCB during installation, which can further reduce the device and the spacer. The process avoidance distance between the walls further reduces the PCB design area.
  • FIG. 1 is a schematic structural view of a shield cover according to a first embodiment of the present invention
  • FIG. 2 is a schematic structural view of a elastic piece according to a second embodiment of the present invention.
  • FIG 3 is a schematic structural view of a PCB board according to a third embodiment of the present invention.
  • the core idea of the utility model is to provide a shield cover using a shrapnel instead of a partition wall to reduce the design area of the PCB board.
  • the shield cover provided by the present invention includes a cover 11 and a partition wall 12, and the partition wall 12 includes a spring piece.
  • the elastic partition is used to replace the metal partition wall in the existing shield cover.
  • the thickness of the elastic piece is much smaller than the thickness of the metal partition wall (the strength of the metal partition wall of 2 mm thick and the same strength and shielding requirements).
  • the shielding effect can be achieved with a 0.3mm thick shrapnel. On this basis, the fixed area of the PCB board that needs to be designed for the partition wall 12 will be greatly reduced.
  • FIG. 2 is a schematic structural view of the elastic piece provided by the second embodiment of the present invention, which can be seen from FIG. 2:
  • the partition wall is an integrally formed elastic piece; replacing the metal partition wall with the integrally formed elastic piece can reduce the design area of the PCB board to a greater extent;
  • the cover body 11 includes an upper cover and a side wall extending downwardly from the upper cover, and the elastic piece in the partition wall is in elastic contact with the cover body; the elastic contact can reduce the difficulty in installing the shield cover, and the partition wall 12 and The elastic contact of the cover 11 makes the size of the partition wall 12 have a certain range of changes, and can be compatible with more use scenarios;
  • the portion of the elastic piece for elastically contacting the side wall is a curved elastic piece
  • the portion of the elastic piece for elastic contact with the upper cover is a bifurcated elastic piece
  • the partition wall is provided with a fixing member 121 for fixing the elastic piece; specifically, as shown in (c) of FIG. 2, the fixing member is a fisheye fixing member.
  • FIG. 3 is a schematic structural view of the PCB board provided by the third embodiment of the present invention, and FIG. 3 shows:
  • the PCB board is provided with a fixing area 3 for fixing the elastic piece in the shielding cover; the fixing area is used for fixing the elastic piece, and the area thereof is much smaller than that of the prior art PCB board is a metal partition wall. Fixed area set;
  • the fixing area is provided with a tin layer; and the tin layer is provided for soldering;
  • the fixing portion when the partition wall is provided with a fixing member, the fixing portion is provided with a fixing hole 31 matched with the fixing member, and the fixing hole 31 cooperates with the fixing member to fix the elastic piece on the PCB board, and then Heating, so that the tin layer melts, the underside of the shrapnel is sealed to ensure the shielding effect.
  • the shielding cover provided by the utility model is made of a conductive material, preferably made of metal, which comprises a metal cover body and a metal elastic piece; the metal cover body is formed by machine or die casting.
  • the shell body processed by the method, the metal shrapnel refers to a metal shrapnel which is processed into a specific shape (the length and other parameters can be adjusted);
  • the metal shrapnel is soldered to the PCB when soldering the surface mount technology (SMT, also known as surface mount technology), first when the PCB is printed with tin. Printing tin on a fixed area of the metal shrapnel corresponding to the PCB, and then inserting the fish eye of the metal shrapnel into a fixing hole on the PCB for over-welding;
  • SMT surface mount technology
  • the metal cover is pressed on the PCB, and the fixing of the PCB and the metal cover is fixed by screws. At this time, the U-shaped split on the top of the metal dome is elastically connected with the metal cover to form the shield provided by the present application.
  • the shrapnel can be preferentially soldered on the PCB before the device is placed on the PCB, thereby avoiding the collision problem between the shield and the device on the PCB during installation, and further reducing the process avoidance distance between the device and the partition wall. Thereby further reducing the PCB design area.
  • the utility model provides a shielding cover for shielding interference of circuit components on a PCB board, comprising a cover body and a partition wall, wherein the partition wall comprises a spring piece contacting the cover body; thus, by the implementation of the utility model, the elastic piece is used instead
  • the metal partition wall in the existing shield cover has a thinner thickness than the original metal partition wall, which reduces the PCB area occupied by the partition wall, thereby reducing the PCB design area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention concerne un élément couvrant de blindage et une carte de circuit imprimé (PCB). L'élément couvrant de blindage est utilisé pour blinder les interférences d'un élément de circuit sur la PCB. L'élément couvrant de blindage comprend un corps d'élément couvrant et une paroi de séparation, la paroi de séparation comprenant une feuille élastique qui est en contact avec le corps d'élément couvrant.
PCT/CN2015/077497 2014-10-16 2015-04-27 Élément couvrant de blindage et carte de circuit imprimé Ceased WO2016058353A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201420598929.4U CN204335283U (zh) 2014-10-16 2014-10-16 一种屏蔽罩及pcb板
CN201420598929.4 2014-10-16

Publications (1)

Publication Number Publication Date
WO2016058353A1 true WO2016058353A1 (fr) 2016-04-21

Family

ID=53171583

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/077497 Ceased WO2016058353A1 (fr) 2014-10-16 2015-04-27 Élément couvrant de blindage et carte de circuit imprimé

Country Status (2)

Country Link
CN (1) CN204335283U (fr)
WO (1) WO2016058353A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112888286A (zh) * 2021-01-06 2021-06-01 北京遥测技术研究所 一种分叉型材组合屏蔽罩及使用方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016221728A1 (de) * 2016-11-07 2018-05-09 Schaeffler Technologies AG & Co. KG Leistungselektronikeinheit mit einem eine Hochvoltseite von einer Niedervoltseite entkoppelnden Trennelement
CN222736507U (zh) * 2024-03-18 2025-04-08 法雷奥新能源汽车(深圳)有限公司 电气设备、电驱动总成系统和车辆

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1717969A (zh) * 2003-03-31 2006-01-04 信越聚合物株式会社 屏蔽箱以及屏蔽方法
CN101524011A (zh) * 2006-11-03 2009-09-02 莱尔德技术股份有限公司 用于安装到基板上的具有凸起和导电构件的卡合安装式emi屏蔽件
CN102651963A (zh) * 2011-02-25 2012-08-29 卓英社有限公司 用于emi屏蔽的屏蔽壳

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1717969A (zh) * 2003-03-31 2006-01-04 信越聚合物株式会社 屏蔽箱以及屏蔽方法
CN101524011A (zh) * 2006-11-03 2009-09-02 莱尔德技术股份有限公司 用于安装到基板上的具有凸起和导电构件的卡合安装式emi屏蔽件
CN102651963A (zh) * 2011-02-25 2012-08-29 卓英社有限公司 用于emi屏蔽的屏蔽壳

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112888286A (zh) * 2021-01-06 2021-06-01 北京遥测技术研究所 一种分叉型材组合屏蔽罩及使用方法

Also Published As

Publication number Publication date
CN204335283U (zh) 2015-05-13

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