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WO2018133180A1 - Mécanisme de protection de carte de circuit imprimé multicouche - Google Patents

Mécanisme de protection de carte de circuit imprimé multicouche Download PDF

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Publication number
WO2018133180A1
WO2018133180A1 PCT/CN2017/075903 CN2017075903W WO2018133180A1 WO 2018133180 A1 WO2018133180 A1 WO 2018133180A1 CN 2017075903 W CN2017075903 W CN 2017075903W WO 2018133180 A1 WO2018133180 A1 WO 2018133180A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
limiting
cover
opening
disposed
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/CN2017/075903
Other languages
English (en)
Chinese (zh)
Inventor
杜红伟
李科林
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.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies 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.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201780009701.3A priority Critical patent/CN108702860A/zh
Publication of WO2018133180A1 publication Critical patent/WO2018133180A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • 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 present invention relates to the field of multi-layer circuit boards, and in particular, to a multi-layer circuit board protection mechanism.
  • MBB Mobile Broadband
  • the main and sub-board architecture that is, two-layer circuit board structure
  • the two-layer circuit board is connected by BTB (Board to Board board-to-board) connector
  • BTB Board to Board board-to-board
  • the layer circuit board is easily moved in a direction parallel to the circuit board due to the external action.
  • the BTB connector is easily damaged by the circuit board, thereby causing the product to be powered off or Damage problem.
  • How to limit the relative motion between the boards in the direction parallel to the board becomes a problem that designers need to solve.
  • the present invention provides a multi-layer circuit board protection mechanism capable of limiting relative motion occurring between circuit boards without affecting circuit board layout and radio frequency performance.
  • an embodiment of the present invention provides a multi-layer circuit board protection mechanism, including a first circuit board and a second circuit board, and a connection device disposed between the first circuit board and the second circuit board, the first circuit
  • the first circuit board is disposed adjacent to the second circuit board, and the first circuit board is provided with a first shielding cover, and the second circuit board is provided with a second shielding cover.
  • the first shielding cover and the second shielding cover are located at the first a first opening is formed between the circuit board and the second circuit board, a first opening is defined in the first shielding cover, and a second opening is defined in the second shielding cover, and the connecting device is disposed through the first opening and the second opening, first A limiting structure is disposed between the shielding cover and the second shielding cover, and the limiting structure limits the relative movement of the first shielding cover and the second shielding cover in a direction parallel to the first circuit board.
  • the limiting structure since the limiting structure is disposed between the first shielding cover and the second shielding cover, the limiting structure can limit the first shielding cover and the second shielding cover to be parallel to the first circuit.
  • the limiting structure is disposed between the first shielding cover and the second shielding cover, the first shielding cover and the second shielding cover can reduce the influence of the external environment on the RF performance of the first circuit board and the second circuit board, Therefore, the setting of the limiting structure has less influence on the radio frequency performance of the first circuit board and the second circuit board.
  • the multi-layer circuit board protection mechanism provided by the embodiment of the present invention can limit the relative motion between the shields without affecting the layout of the circuit board and the radio frequency performance, thereby limiting the relationship between the boards. Relative movement occurs, thereby avoiding damage to the connecting devices between the boards (such as the BTB connector) due to excessive movement between the boards.
  • the first shielding cover includes a first cover bottom and a first side plate formed on a peripheral edge of the first cover bottom, the first An opening is formed on the first cover bottom, the first side plate is fixedly connected to the first circuit board;
  • the second shielding cover includes a second cover bottom and a peripheral edge formed on the second cover bottom The second side plate is opened on the second cover bottom, and the second side plate is fixedly connected to the second circuit board.
  • the first shielding cover and the second shielding cover may also be configured as follows: the first shielding cover includes a first cover body, the first cover body is formed with a plurality of mesh holes, and the first cover body is formed with a first cover opening, a rim of the cover is fixedly connected to the first circuit board, the first opening is formed on the first cover; the second cover comprises a second cover, the second cover is formed with a plurality of meshes, and the second cover A second cover is formed on the second cover, and the second cover is fixedly connected to the second circuit board, and the second opening is formed on the second cover.
  • the first shield cover and the second shield cover of the former solution Compared with the structure of the first shield cover and the cover of the second shield cover having a plurality of mesh structures, the first shield cover and the second shield cover of the former solution have higher structural strength and are less prone to deformation, when the limit is When the structure is disposed on the first shield or the second shield, it can have sufficient strength to limit the relative motion between the two
  • the limiting structure in conjunction with the first possible implementation of the first aspect, in a second possible implementation manner of the first aspect, includes a flanged rib disposed on a first opening edge, and the flanged rib fits The utility model is disposed in the second opening.
  • the method of fitting the limit by the flange and the second opening is simple in structure, easy to disassemble and convenient to maintain, and does not need to add other parts, which is beneficial to reduce the cost.
  • the first cover bottom defines a slot
  • the second cover is provided
  • the limiting ribs are disposed in the limiting slot.
  • the limiting structure in conjunction with the first possible implementation of the first aspect, in a fourth possible implementation manner of the first aspect, includes a limiting protrusion disposed on the first cover and opening a limiting hole on the second cover bottom, wherein the limiting protrusion fits through the limiting hole.
  • the limiting hole can limit the movement of the limiting protrusion in a direction parallel to the first circuit board, thereby restricting the relative movement of the first shielding cover and the second shielding cover, thereby limiting the first circuit board and the second circuit. The relative movement of the plates, the connecting device will not be damaged by the relative movement of the first circuit board and the second circuit board.
  • the limiting protrusion is a plurality, and the plurality of the limiting protrusions surround the first The opening is disposed; the plurality of limiting holes are disposed around the second opening, and are in one-to-one correspondence with the plurality of limiting protrusions.
  • the plurality of limiting protrusions are matched with the plurality of limiting holes in one-to-one correspondence, when the first shielding cover and the second shielding cover are parallel
  • the plurality of limiting protrusions are disposed around the first opening, and the plurality of limiting holes are disposed around the second opening, so that the first shielding cover and the second shielding cover can be more accurately restricted, avoiding the first opening and the second opening
  • the inner wall of the opening contacts the connecting device when the first shield and the second shield move relative to each other in a direction parallel to the first circuit board, which is more advantageous for the protection of the connecting device.
  • the rib is formed by bending or stretching.
  • the ribs are made by a process of stretching or bending the material of the first shield itself, which is advantageous in reducing the manufacturing cost.
  • connection between the flange and the first cover is provided with a reinforcing rib.
  • the connection strength between the flange and the first cover bottom can be increased, and the rigidity of the flange can be increased, so that the flange can be greatly reduced in the direction in which the first shield and the second shield are parallel to the first circuit board. Deformation that occurs during exercise.
  • the limiting rib is formed by bending.
  • the limit rib is made by a process of bending the material of the second shield itself, which is advantageous for reducing the manufacturing cost.
  • FIG. 1 is a schematic structural view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (flange rib bending forming);
  • FIG 3 is a cross-sectional view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (flange rib bending forming);
  • FIG. 4 is a schematic structural view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (a rib forming process with a rib);
  • FIG. 5 is a cross-sectional view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (flange rib forming, with ribs);
  • FIG. 6 is a schematic structural view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (a rib stretch forming);
  • FIG. 7 is a cross-sectional view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (flange rib stretch forming);
  • FIG. 8 is a schematic structural view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (folding ribs folded in half);
  • Figure 9 is a cross-sectional view of a multi-layer (two-layer) circuit board protection mechanism in accordance with an embodiment of the present invention (flap ribs folded in half);
  • FIG. 10 is a schematic structural view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (a limiting protrusion and a limiting hole matching);
  • FIG. 11 is a cross-sectional view of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention (a limiting protrusion, a limiting hole matching);
  • FIG. 12 is a schematic structural view (inter-insertion structure) of a multi-layer (two-layer) circuit board protection mechanism according to an embodiment of the present invention
  • Figure 13 is a cross-sectional view (inter-insertion structure) of a multi-layer (two-layer) circuit board protection mechanism in accordance with an embodiment of the present invention.
  • an embodiment of the present invention provides a multi-layer circuit board protection mechanism including a first circuit board 1 and a second circuit board 2 and disposed between the first circuit board 1 and the second circuit board 2.
  • the connecting device 3 the first circuit board 1 is adjacent to the second circuit board 2 and arranged in parallel, the first circuit board 1 is covered with a first shielding cover 4, and the second circuit board 2 is covered with a second shielding cover. 5, the first shield 4 and the second shield 5 are located between the first circuit board 1 and the second circuit board 2 and are oppositely disposed.
  • the first shield 4 is provided with a first opening 40, and the second shield 5 is A second opening 50 is defined, and the connecting device 3 is disposed through the first opening 40 and the second opening 50.
  • a limiting structure is disposed between the first shielding cover 4 and the second shielding cover 5.
  • the limiting structure can limit the first shielding cover. 4 and the second shield 5 are relatively moved in a direction parallel to the first circuit board 1.
  • the circuit board may be a PCB (Printed Circuit Board), and the number of layers of the circuit board may be 2, 3, or 4 layers, which is not limited herein.
  • the limiting structure can limit the first shielding cover 4 and the second shielding cover 5 to be parallel. Relatively moving in the direction of the first circuit board 1, so that no additional parts need to be added on the first circuit board 1 and the second circuit board 2 to restrict their relative movement in the direction parallel to the first circuit board 1, thereby reducing the first The influence of the layout of the components on the circuit board 1 and the second circuit board 2; since the limiting structure is disposed between the first shield 4 and the second shield 5, the first shield 4 and the second shield 5 can be reduced The small external influence on the radio frequency performance of the first circuit board 1 and the second circuit board 2, whereby the setting of the limit structure has less influence on the radio frequency performance of the first circuit board 1 and the second circuit board 2.
  • the multi-layer circuit board protection mechanism provided by the embodiment of the present invention can limit the relative motion between the shields without affecting the layout of the circuit board and the radio frequency performance, thereby limiting the relationship between the boards. Relative movement occurs, thereby preventing the connection device 3 (such as the BTB connector) between the boards from being damaged due to excessive movement between the boards.
  • the structure of the first shield 4 and the second shield 5 is not unique.
  • the first shield 4 and the second shield 5 may have the following structure: the first shield 4 includes a first cover, and the first cover a plurality of mesh holes are formed on the body, and a first cover is formed on the first cover, the edge of the first cover is fixedly connected to the first circuit board 1, and the first opening 40 is opened on the first cover;
  • the shielding cover 5 includes a second cover body.
  • the second cover body is formed with a plurality of mesh holes, and the second cover body is formed with a second cover opening.
  • the edge of the second cover opening is fixedly connected with the second circuit board 2, and the second The opening 50 is opened on the second cover.
  • the first shield 4 and the second shield 5 may also have the following structure: the first screen
  • the cover 4 includes a first cover bottom 41 and a first side plate 42 formed on the periphery of the first cover bottom 41.
  • the first opening 40 is formed on the first cover bottom 41, and the first side plate 42 and the first circuit board 1
  • the second shield cover 5 includes a second cover bottom 51 and a second side plate 52 formed on the periphery of the second cover bottom 51.
  • the second opening 50 is opened on the second cover bottom 51, and the second side plate 52 is The second circuit board 2 is fixedly connected.
  • FIG. 2 and FIG. 3 show a limiting structure.
  • the limiting structure includes a flange rib 43 disposed on the edge of the first opening 40, and the flange rib 43 is worn. It is disposed in the second opening 50.
  • the first circuit board 1 and the second circuit board 2 are relatively moved in the direction parallel to the first circuit board 1, and the second opening 50 acts on the movement of the flange ribs 43.
  • the effect of the limitation further limits the relative movement of the first circuit board 1 and the second circuit board 2 in a direction parallel to the first circuit board 1.
  • the connecting device 3 (such as the BTB connector) between the first circuit board 1 and the second circuit board 2 is not damaged by the relative movement of the first circuit board 1 and the second circuit board 2.
  • the method of fitting the limit by the flange rib 43 and the second opening 50 is simple in structure, easy to disassemble and convenient to maintain, and does not need to add other parts, which is beneficial to reduce the cost.
  • the flange rib 43 can be formed by bending, as shown in FIG. 2 and FIG. 3, by cutting the first opening 40, and then bending the edge of the first opening 40, thereby forming the flip shown in FIG. Side ribs 43.
  • the ribs 43 can be folded in half, and the ribs 43 can be strengthened by folding the ribs 43 to reduce the first shield 4 and the second shield. 5 deformation occurring when moving in a direction parallel to the direction of the first circuit board 1.
  • the flange rib 43 may be formed by stretch forming, applying a force to the edge of the first opening 40 using a mold and stretching in the direction of the first shield 4 to form a surrounding first opening. 40 rounded ribs 43 along the edge.
  • the ribs 43 are formed by a process of stretching or bending the material of the first shield 4 itself, which is advantageous in reducing the manufacturing cost.
  • the flanges 43 and the first A rib 44 is provided at the joint of the cover bottom 41.
  • the connection strength between the flanges 43 and the first cover bottom 41 can be increased, and the rigidity of the flanges 43 can be improved, thereby greatly reducing
  • the deformation of the small flange ribs 43 when the first shield 4 and the second shield 5 are relatively moved in the direction parallel to the first circuit board 1 provides better protection for the connecting device 3.
  • the first cover bottom 41 has a limit groove 411
  • the second cover bottom 51 has a limit.
  • the rib 511 and the limiting rib 511 are inserted into the limiting groove 411.
  • the second opening 50 of the first shielding cover 4 and the limiting rib 511 of the second shielding cover 5 are inserted into the limiting slot 411 of the first shielding cover 4 .
  • the limiting structure may further include a limited position slot 411 formed on the first cover bottom 41, and the second cover bottom 51 is disposed
  • the limiting rib 511, the limiting rib 511 is inserted into the limiting slot 411, and is inserted into the limiting slot 411 through the limiting rib 511. This can also limit the first shielding cover 4 and the second shielding cover 5 to be parallel to the first A board 1 is relatively moved in the direction.
  • the limiting rib 511 is formed by bending, that is, the notch is cut on the second cover bottom 51, and then the edge of the notch is biased to be bent into the limiting rib 511 shown in FIG.
  • the stopper 511 is made by a process of bending the material of the second shield 5 itself, which is advantageous in reducing the manufacturing cost.
  • FIG. 10 and FIG. 11 show another limiting structure.
  • the limiting structure includes a limiting protrusion 412 disposed on the first cover bottom 41 and a limiting hole 512 formed on the second cover bottom 51.
  • the limiting protrusion 412 is inserted into the limiting hole 512.
  • the limiting hole 512 can limit the movement of the limiting protrusion 412 in a direction parallel to the first circuit board 1 , thereby restricting the relative movement of the first shielding cover 4 and the second shielding cover 5 , thereby limiting the first circuit.
  • the relative movement of the board 1 and the second circuit board 2, the connecting device 3 is not damaged by the relative movement of the first circuit board 1 and the second circuit board 2.
  • the limiting protrusions 412 are easily deformed.
  • the limiting protrusions 412 are multiple, and multiple limit positions are provided.
  • the protrusions 412 are disposed around the first opening 40.
  • the plurality of limiting holes 512 are disposed around the second opening 50 and are in one-to-one correspondence with the plurality of limiting protrusions 412.
  • the plurality of limiting protrusions 412 are matched with the plurality of limiting holes 512 in one-to-one correspondence.
  • the limiting protrusions The force of the 412 can be greatly reduced, and the deformation occurring is also greatly reduced, thereby facilitating the improvement of the limit effect between the first circuit board 1 and the second circuit board 2; since the connecting device 3 passes through the first opening 40 and The second opening 50 is disposed, and the plurality of limiting protrusions 412 are disposed around the first opening 40, and the plurality of limiting holes 512 are disposed around the second opening 50, so that the first shielding cover 4 and the second shielding cover can be more accurately 5 performing a limit to prevent the inner walls of the first opening 40 and the second opening 50 from coming into contact with the connecting device 3 when the first shield 4 and the second shield 5 are relatively moved in a direction parallel to the first circuit board 1 , and more Conducive to the protection
  • the limiting protrusion 412 is a hollow structure, and the limiting protrusion 412 is formed by stretching, that is, applying a force to the first cover bottom 41 by a mold and stretching in the direction of the second shielding cover 5 , and then stretching into The limiting projection 412 is shown in FIG.
  • the limiting protrusion 412 may be a hollow cylinder or a hollow polygonal convex hull structure, which is not limited herein.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention concerne un mécanisme de protection de carte de circuit imprimé multicouche qui comprend une première carte de circuit imprimé (1), une seconde carte de circuit imprimé (2) et un composant de connexion (3). La première carte de circuit imprimé (1) et la seconde carte de circuit imprimé (2) sont adjacentes et sont disposées en parallèle l'une par rapport à l'autre. Un premier boîtier de protection (4) est disposé sur la première carte de circuit imprimé (1), un second boîtier de protection (5) est disposé sur la seconde carte de circuit imprimé (2). Le premier boîtier de protection (4) et le second boîtier de protection (5) sont situés entre la première carte de circuit imprimé (1) et la seconde carte de circuit imprimé (2) et sont disposés de façon relative. Une ouverture (40, 50) est formée dans chacun du premier boîtier de protection (4) et du second boîtier de protection (5). Le composant de connexion (3) est disposé de manière à pénétrer à travers les ouvertures (40, 50). Une structure de limite est disposée entre le premier boîtier de protection (4) et le second boîtier de protection (5), et la structure de limitation peut limiter un mouvement relatif du premier boîtier de protection (4) et du second boîtier de protection (5) le long d'une direction parallèle à la première carte de circuit imprimé (1).
PCT/CN2017/075903 2017-01-17 2017-03-07 Mécanisme de protection de carte de circuit imprimé multicouche Ceased WO2018133180A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780009701.3A CN108702860A (zh) 2017-01-17 2017-03-07 一种多层电路板保护机构

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710035790 2017-01-17
CN201710035790.0 2017-01-17

Publications (1)

Publication Number Publication Date
WO2018133180A1 true WO2018133180A1 (fr) 2018-07-26

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ID=62908361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/075903 Ceased WO2018133180A1 (fr) 2017-01-17 2017-03-07 Mécanisme de protection de carte de circuit imprimé multicouche

Country Status (2)

Country Link
CN (1) CN108702860A (fr)
WO (1) WO2018133180A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI754268B (zh) * 2020-04-23 2022-02-01 大陸商宏啟勝精密電子（秦皇島）有限公司 板對板連接結構及其製作方法
CN114025601A (zh) * 2021-11-15 2022-02-08 珠海格力电器股份有限公司 屏蔽装置及电器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1972587A (zh) * 2005-11-25 2007-05-30 深圳富泰宏精密工业有限公司 电子装置的屏蔽构件及壳体组件
US20100020520A1 (en) * 2007-01-03 2010-01-28 Chin-Fu Horng Emi shielding device
CN201563343U (zh) * 2009-12-16 2010-08-25 英华达股份有限公司 板对板屏蔽模块结构及具有该结构的电子设备
JP2011071827A (ja) * 2009-09-28 2011-04-07 Kyocera Corp 携帯電子機器
CN202634510U (zh) * 2012-04-25 2012-12-26 深圳天珑移动技术股份有限公司 一种屏蔽罩及手机
CN102882995A (zh) * 2011-07-13 2013-01-16 Lg电子株式会社 移动终端
CN105451441A (zh) * 2014-08-12 2016-03-30 国基电子（上海）有限公司 电子装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1972587A (zh) * 2005-11-25 2007-05-30 深圳富泰宏精密工业有限公司 电子装置的屏蔽构件及壳体组件
US20100020520A1 (en) * 2007-01-03 2010-01-28 Chin-Fu Horng Emi shielding device
JP2011071827A (ja) * 2009-09-28 2011-04-07 Kyocera Corp 携帯電子機器
CN201563343U (zh) * 2009-12-16 2010-08-25 英华达股份有限公司 板对板屏蔽模块结构及具有该结构的电子设备
CN102882995A (zh) * 2011-07-13 2013-01-16 Lg电子株式会社 移动终端
CN202634510U (zh) * 2012-04-25 2012-12-26 深圳天珑移动技术股份有限公司 一种屏蔽罩及手机
CN105451441A (zh) * 2014-08-12 2016-03-30 国基电子（上海）有限公司 电子装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI754268B (zh) * 2020-04-23 2022-02-01 大陸商宏啟勝精密電子（秦皇島）有限公司 板對板連接結構及其製作方法
CN114025601A (zh) * 2021-11-15 2022-02-08 珠海格力电器股份有限公司 屏蔽装置及电器

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