CN113133293A - Floating shielding mechanism and circuit board module - Google Patents

Abstract

Translated fromChinese

一种浮动式屏蔽机构，包括一罩体、一屏蔽片及一柔性导体件。罩体用于固定至一电路板且罩覆电路板的多个输入输出端口。屏蔽片可移动地配置于罩体与一背板，屏蔽片具有多个开孔，这些开孔分别对应于这些输入输出端口。柔性导体件可压缩地凸出于屏蔽片的内表面，且用于接触这些输入输出端口。当电路板、背板与浮动式屏蔽机构一起组装至一机箱内时，这些输入输出端口外露于机箱开口，且柔性导体件用于被压缩而使屏蔽片抵接机箱开口周围的内壁面。

A floating shielding mechanism includes a cover body, a shielding sheet and a flexible conductor piece. The cover body is used for being fixed to a circuit board and covering a plurality of input and output ports of the circuit board. The shielding sheet is movably disposed on the cover body and a backplane, and the shielding sheet has a plurality of openings, and the openings correspond to the input and output ports respectively. The flexible conductor member compressibly protrudes from the inner surface of the shielding sheet and is used to contact the input and output ports. When the circuit board, the backplane and the floating shielding mechanism are assembled into a case, the input and output ports are exposed to the case opening, and the flexible conductors are compressed to make the shielding sheet abut the inner wall around the case opening.

Description

Floating shielding mechanism and circuit board module

Technical Field

The present invention relates to a shielding mechanism and a circuit board module, and more particularly, to a floating shielding mechanism and a circuit board module.

Background

At present, a considerable number of motherboards are integrated with the IO shielding mechanism, that is, the IO shielding mechanism is directly locked to the motherboard and then loaded into the chassis together. However, after the motherboard is locked into the chassis, the IO shielding mechanism may not be well overlapped with the chassis due to tolerance, which may cause a problem of poor electromagnetic shielding.

Disclosure of Invention

The present invention is directed to a floating type shielding mechanism, which is movable relative to a circuit board assembly to be able to be well overlapped to a chassis when being fixed to the chassis together with the circuit board assembly, thereby providing a good electromagnetic shielding effect.

In order to achieve the above object, the present invention provides a circuit board module having the above floating type shielding mechanism.

The invention relates to a floating type shielding mechanism which is used for being assembled on a circuit board assembly and assembled into a case together with the circuit board assembly, wherein the circuit board assembly comprises a circuit board and a back plate fixed to the bottom surface of the circuit board, the circuit board comprises a plurality of input and output ports positioned on the top surface, the case comprises a case opening, and the floating type shielding mechanism comprises a cover body, a shielding sheet and a flexible conductor piece. The cover body is used for being fixed to the circuit board, is located the top surface and covers the top of these input/output ports. The shielding sheet is movably arranged on the cover body and the back plate and is provided with a plurality of openings which respectively correspond to the input and output ports. The flexible conductor member is compressibly raised from the inner surface of the shielding plate and is used for contacting the input and output ports. When the circuit board assembly and the floating type shielding mechanism are assembled in the case together, the input/output ports are exposed out of the case opening, and the flexible conductor piece is used for being compressed to enable the shielding sheet to abut against the inner wall surface around the case opening.

In an embodiment of the invention, the shielding plate includes a main plate and a top plate connected to the main plate in a bending manner, the input and output ports are located on the main plate, one of the top plate and the cover facing each other is provided with a first protrusion, the other one of the top plate and the cover is provided with a first opening, and the first protrusion is movably disposed in the first opening along a moving direction.

In an embodiment of the invention, the first protrusion is integrally formed on the cover, and the first opening is a long hole, an elliptical hole or a circular hole.

In an embodiment of the invention, the shielding plate includes a main plate body and a bottom plate body connected to the main plate body in a bending manner, the input and output ports are located on the main plate body, the bottom plate body is located between the back plate and the circuit board, one of the positions of the bottom plate body and the back plate facing each other is provided with a second protruding portion, the other one of the positions of the bottom plate body and the back plate is provided with a second opening, and the second protruding portion is movably disposed in the second opening along the moving direction.

In an embodiment of the invention, the bottom plate has a screw hole, the second protrusion includes a nut, a boss and a body connected in sequence, the body of the second protrusion is screwed to the screw hole of the bottom plate, and the boss passes through the second opening on the back plate and abuts against the bottom plate.

In an embodiment of the invention, the second opening is a long hole or an elliptical hole, the size of the nut is larger than the width of the second opening, and the width and the length of the second opening are larger than the size of the boss.

In an embodiment of the invention, the second opening is a circular hole, a size of the nut is larger than a size of the second opening, and a size of the second opening is larger than a size of the boss.

In an embodiment of the invention, the flexible conductor is a conductive foam.

In an embodiment of the invention, the flexible conductor is a bent elastic sheet formed by folding a part of the shielding sheet.

The invention discloses a circuit board module which is used for being assembled in a case, wherein the case comprises a case opening positioned on a first wall and a case fixing hole positioned on a second wall, and the circuit board module comprises a circuit board, a back plate and a floating type shielding mechanism. The circuit board comprises a circuit board fixing hole and a plurality of input and output ports, wherein the circuit board fixing hole penetrates through the circuit board fixing hole, and the input and output ports are located on the top surface. The back plate is fixed to the bottom surface of the circuit board. The floating type shielding mechanism is configured on the circuit board and the back plate. When the circuit board, the back plate and the floating type shielding mechanism are assembled in the case together, the flexible conductor piece is compressed, so that the circuit board fixing hole is aligned with the case fixing hole, and the shielding sheet abuts against the inner wall surface around the opening of the case.

In view of the above, the floating type shielding mechanism of the present invention is configured to the cover body and the back plate movably through the shielding plate, and the flexible conductor member is configured to protrude from the inner surface of the shielding plate in a compressible manner.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

Fig. 1 is a schematic diagram of a circuit board module according to an embodiment of the invention.

Fig. 2 is a partial sectional view taken along line a-a of fig. 1.

Fig. 3 is a partial sectional view taken along line B-B of fig. 1.

Fig. 4A is an exploded view of the floating shield mechanism and the backplate of fig. 1.

FIG. 4B is a schematic view of a first opening of a floating shield mechanism according to another embodiment of the invention.

FIG. 4C is a schematic view of a second opening of a floating shield mechanism in accordance with another embodiment of the present invention.

Fig. 5-6 are top schematic views of the circuit board module of fig. 1 installed in a chassis.

Fig. 7 is a schematic partial cross-sectional view of a shield sheet according to another embodiment of the present invention.

Wherein, the reference numbers:

d1: direction of movement

d1, d2, L1, L2, L3, P, R1, R2: size of

1: circuit board module

2: circuit board assembly

10: circuit board

12: input/output port

14: circuit board fixing hole

16: the top surface

18: bottom surface

20: cabinet

23: first wall

24: case opening

25: second wall

26: case fixing hole

27: inner wall surface

30: back plate

32. 32 a: second opening

100: floating type shielding mechanism

110: cover body

112: first projecting part

120: shielding sheet

121: main sheet body

122: top sheet body

123: bottom sheet body

124: opening holes

125. 125 a: first opening

126: screw hole

127: abutting part

128: inner surface

140: second projecting part

142: nut cap

144: boss

146: spiral shell body

150. 150 a: flexible conductor

Detailed Description

The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:

fig. 1 is a schematic diagram of a circuit board module according to an embodiment of the invention. Referring to fig. 1, the circuit board module 1 of the present embodiment is used for being assembled into a chassis 20 (shown in fig. 5). The circuit board module 1 includes acircuit board assembly 2 and a floatingtype shielding mechanism 100. Thecircuit board assembly 2 includes acircuit board 10 and aback plate 30 fixed to thebottom surface 18 of thecircuit board 10. The floatingshield mechanism 100 is located on thetop surface 16 of thecircuit board 10.

Circuit board 10 includes a plurality of input/output ports 12 on atop surface 16. The floatingshielding mechanism 100 is movably disposed on thecircuit board 10 and theback plate 30 and covers the input/output ports 12 of thecircuit board 10.

Compared to the situation that the shielding mechanism cannot be well abutted against the chassis after the shielding mechanism and the circuit board are assembled to the chassis together due to tolerance, in the embodiment, the floatingshielding mechanism 100 can slightly move relative to thecircuit board 10, so that the abuttingportion 127 of the floatingshielding mechanism 100 can abut against thechassis 20 after the floatingshielding mechanism 100 is assembled to thechassis 20 together with thecircuit board 10 and theback plate 30, thereby achieving a good electromagnetic shielding effect. This will be explained below.

Fig. 2 is a partial sectional view taken along line a-a of fig. 1. Fig. 3 is a partial sectional view taken along line B-B of fig. 1. Fig. 4A is an exploded view of the floating shield mechanism and the backplate of fig. 1.

Referring to fig. 2 to 4A, the floatingtype shielding mechanism 100 includes ahousing 110, ashielding plate 120 and aflexible conductor 150. Thecover 110 is disposed on thecircuit board 10 and located on thetop surface 16 of thecircuit board 10, and covers the input/output ports 12.

The shieldingplate 120 is movably disposed between thecover 110 and theback plate 30 along a moving direction D1. In detail, the shieldingplate 120 includes amain body 121, atop body 122 and abottom body 123 connected to themain body 121 in a bending manner, and a plurality of abuttingportions 127 surrounding themain body 121.

Themain body 121 of theshielding plate 120 has a plurality ofopenings 124, and theopenings 124 respectively correspond to the input/output ports 12. Thetop sheet 122 and thebottom sheet 123 are respectively located at two opposite ends of themain sheet 121. Thetop panel 122 is adjacent to theshell 110 and thebottom panel 123 is adjacent to theback panel 30. The abuttingportion 127 is used to abut against a portion of thehousing 10 around thehousing opening 24.

As shown in fig. 2, one of thetop sheet body 122 and thecover body 110 is provided with afirst protrusion 112 at a position facing each other, and the other is provided with afirst opening 125. Thefirst protrusion 112 is movably disposed at thefirst opening 125 along the moving direction D1.

Specifically, in the present embodiment, thetop sheet body 122 has afirst opening 125, and thecover body 110 has afirst protrusion 112. Of course, in other embodiments, thetop sheet body 122 may also have thefirst protrusion 112, and thecover body 110 may also have thefirst opening 125.

In the embodiment, thefirst protrusion 112 is integrally formed on thecover 110, but thefirst protrusion 112 may be fixed on thecover 110 by locking, riveting, fastening, and adhering, and is not limited to the above.

In addition, as shown in fig. 4A, in the present embodiment, thefirst opening 125 is a long hole or an elliptical hole. The length dimension L1 of thefirst opening 125 is greater than the dimension P (fig. 2) of thefirst projection 112 such that thefirst projection 112 is able to slide within thefirst opening 125. Therefore, theshield plate 120 can move relative to thecover 110. Of course, the form of thefirst opening 125 is not limited thereto.

FIG. 4B is a schematic view of a first opening of a floating shield mechanism according to another embodiment of the invention. Referring to fig. 4B, in the present embodiment, thefirst opening 125a is a circular hole. The diameter dimension d1 of thefirst opening 125a is greater than the dimension P of the first tab 112 (fig. 2). Therefore, thefirst protrusion 112 can also move relative to thefirst opening 125 a.

Referring back to fig. 3, thebottom plate 123 is located between theback plate 30 and thecircuit board 10, one of the portions of thebottom plate 123 facing theback plate 30 is provided with asecond protrusion 140, the other one is provided with a second opening 32, and thesecond protrusion 140 is movably disposed in the second opening 32 along the moving direction D1.

Specifically, in the present embodiment, theback plate 30 has the second opening 32, and thesecond protrusion 140 is disposed on thebottom plate 123. Of course, in other embodiments, theback plate 30 may be disposed on thebottom plate 123, and thesecond protrusion 140 may also have the second opening 32.

Further, in the present embodiment, thebottom body 123 has ascrew hole 126, and thesecond protrusion 140 includes anut 142, aboss 144 and ascrew body 146 connected in sequence. Thescrew body 146 of the second protrudingportion 140 is screwed to thescrew hole 126 of thebottom plate body 123, and theboss 144 abuts against thebottom plate body 123, so that the second protrudingportion 140 is firmly fixed on thebottom plate body 123 of theshielding plate 120.

In this embodiment, when the floatingshielding mechanism 100 is assembled, thefirst protrusion 112 is inserted into thefirst opening 125, and then thesecond protrusion 140 is inserted through the second opening 32 of theback plate 30 and screwed into thescrew hole 126 of thebottom plate 123. In other words, thesecond protrusion 140 is designed similar to a screw, which can improve the assembly convenience of the floatingshielding mechanism 100.

Of course, in other embodiments, thesecond protrusion 140 may also be integrally formed on thebottom sheet body 123, for example, and is formed in a protruding or folding manner, without being limited thereto.

In addition, in the present embodiment, as shown in fig. 4A, the second opening 32 is a long hole or an elliptical hole. As shown in fig. 3, the length L2 and the width L3 (fig. 4A) of the second opening 32 are greater than the dimension R1 of theprotrusion 144 of thesecond protrusion 140, so that theprotrusion 144 of thesecond protrusion 140 can move in the second opening 32. Of course, the shape of the second opening 32 is not limited thereto.

In addition, in the present embodiment, the dimension R2 of thenut 142 is greater than the width dimension L3 (shown in fig. 4A) of the second opening 32, so that theback plate 30 is not separated from thebottom plate 123 and thesecond protrusion 140 at a position close to the second opening 32.

FIG. 4C is a schematic view of a second opening of a floating shield mechanism in accordance with another embodiment of the present invention. Referring to fig. 4C, in the present embodiment, the second opening 32a is a circular hole. The diameter dimension d2 of the second opening 32a is greater than the dimension R1 (fig. 3) of theboss 144 such that theboss 144 of thesecond projection 140 is movable within the second opening 32 a.

In addition, the dimension R2 of thenut 142 is larger than the diameter dimension d2 of the second opening 32, so that theback plate 30 does not get out of between thebottom plate 123 and thesecond protrusion 140 at the position close to the second opening 32 a.

In addition, as shown in fig. 3, in the present embodiment, theflexible conductor member 150 may compressively protrude from theinner surface 128 of theshielding plate 120 and contact the input/output ports 12. Therefore, theflexible conductor member 150 can be compressed so that the input/output port 12 on thecircuit board 10 is relatively close to theshield plate 120. In the present embodiment, theflexible conductor 150 may be a conductive foam, which may be compressed and conductive, but theflexible conductor 150 is not limited thereto.

Fig. 5-6 are top schematic views of the circuit board module of fig. 1 installed in a chassis. It should be noted that fig. 5 and fig. 6 are schematic diagrams, and fig. 1 to fig. 4A are combined together. Referring to fig. 5, in the present embodiment, thehousing 20 includes ahousing opening 24 on thefirst wall 23 and ahousing fixing hole 26 on thesecond wall 25. Thecircuit board 10 includes a circuitboard fixing hole 14 therethrough.

When thecircuit board 10 is assembled with the floatingshielding mechanism 100 into thehousing 20, the circuitboard fixing holes 14 are aligned with the housing fixing holes 26 for screws (not shown) to lock thecircuit board 10 to thehousing 20.

However, as shown in fig. 5, when thecircuit board 10 is assembled into thehousing 20 together with the floatingshielding mechanism 100, the shieldingplate 120 abuts against theinner wall surface 27 around thehousing opening 24, but the circuitboard fixing hole 14 is not aligned with thehousing fixing hole 26, so that thecircuit board 10 cannot be locked on thehousing 20.

Referring to fig. 6, in this embodiment, theflexible conductor 150 is used to be compressed. The assembler pushes thecircuit board 10 along the moving direction D1 toward thefirst wall 23 of thecasing 20, and theflexible conductor 150 is compressed, thereby making room for the circuitboard fixing holes 14 to be located at the casing fixing holes 26. Thus, the circuitboard fixing holes 14 are aligned with thecase fixing holes 26, and screws can pass through the circuitboard fixing holes 14 and thecase fixing holes 26, so that thecircuit board 10 is fixed on thecase 20.

Fig. 7 is a schematic partial cross-sectional view of a shield sheet according to another embodiment of the present invention. Referring to fig. 7, in the present embodiment, theflexible conductor 150a is a bent elastic sheet formed by folding a portion of theshielding sheet 120. Theflexible conductor 150a is adapted to abut the input and output ports 12 (shown in fig. 2). As shown in fig. 5, when the circuitboard fixing hole 14 is not aligned with thechassis fixing hole 26, the assembler only pushes thecircuit board 10 toward thefirst wall 23 of thechassis 20, and theflexible conductor 150a of the embodiment may be pressed toward the shieldingplate 120, so that the circuitboard fixing hole 14 is aligned with thechassis fixing hole 26. Of course, the kind of theflexible conductor member 150a is not limited thereto.

In summary, the floating shielding mechanism of the present invention is configured to the cover body and the back plate movably through the shielding plate, and the flexible conductor member is configured to protrude from the inner surface of the shielding plate in a compressible manner.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

Translated fromChinese

1.一种浮动式屏蔽机构，用于组装于一电路板组件上且与该电路板组件一起组装至一机箱内，该电路板组件包括一电路板及固定至该电路板的底面的一背板，该电路板包括位于顶面的多个输入输出端口，该机箱包括一机箱开口，其特征在于，该浮动式屏蔽机构包括：1. A floating shielding mechanism for being assembled on a circuit board assembly and assembled into a chassis together with the circuit board assembly, the circuit board assembly comprising a circuit board and a back fixed to the bottom surface of the circuit board The circuit board includes a plurality of input and output ports on the top surface, and the chassis includes a chassis opening. It is characterized in that, the floating shielding mechanism includes:一罩体，用于固定至该电路板，该罩体位于该顶面且罩覆该些输入输出端口的上方；a cover for fixing to the circuit board, the cover is located on the top surface and covers the input and output ports;一屏蔽片，可移动地配置于该罩体与该背板，该屏蔽片具有多个开孔，该些开孔分别对应于该些输入输出端口；以及a shielding sheet, movably disposed on the cover body and the backplane, the shielding sheet has a plurality of openings, the openings correspond to the input and output ports respectively; and一柔性导体件，可压缩地凸出于该屏蔽片的内表面，且用于接触该些输入输出端口，a flexible conductor, compressively protruding from the inner surface of the shielding sheet, and used for contacting the input and output ports,其中当该电路板组件与浮动式屏蔽机构一起组装至该机箱内时，该些输入输出端口外露于该机箱开口，且该柔性导体件用于被压缩而使该屏蔽片抵接该机箱开口周围的内壁面。When the circuit board assembly and the floating shielding mechanism are assembled into the case, the input and output ports are exposed to the case opening, and the flexible conductor is used to be compressed so that the shielding sheet abuts around the case opening the inner wall surface.2.根据权利要求1所述的浮动式屏蔽机构，其特征在于，该屏蔽片包括一主片体及弯折地连接于该主片体的一顶片体，该些输入输出端口位于该主片体上，该顶片体与该罩体在朝向于彼此的部位的其中一者设有一第一凸出部，另一者具有一第一开口，该第一凸出部沿一移动方向可移动地配置于该第一开口。2. The floating shielding mechanism according to claim 1, wherein the shielding sheet comprises a main sheet body and a top sheet body that is flexibly connected to the main sheet body, and these input and output ports are located in the main sheet body. On the sheet body, one of the top sheet body and the cover body is provided with a first protruding part in the parts facing each other, and the other has a first opening, and the first protruding part can be moved along a moving direction. It is arrange|positioned at this 1st opening so that it may move.3.根据权利要求2所述的浮动式屏蔽机构，其特征在于，该第一凸出部一体成型地设置于该罩体，该第一开口为一长条孔、一椭圆孔或一圆孔。3 . The floating shielding mechanism according to claim 2 , wherein the first protruding portion is integrally formed on the cover body, and the first opening is a long hole, an oval hole or a round hole. 4 . .4.根据权利要求1所述的浮动式屏蔽机构，其特征在于，该屏蔽片包括一主片体及弯折地连接于该主片体的一底片体，该些输入输出端口位于该主片体上，该底片体位于该背板与该电路板之间，该底片体与该背板在朝向于彼此的部位的其中一者设有一第二凸出部，另一者具有一第二开口，该第二凸出部沿一移动方向可移动地配置于该第二开口。4 . The floating shielding mechanism of claim 1 , wherein the shielding sheet comprises a main sheet body and a bottom sheet body connected to the main sheet body by bending, and the input and output ports are located on the main sheet. 5 . On the body, the bottom sheet body is located between the back plate and the circuit board, one of the bottom sheet body and the back plate facing each other is provided with a second protruding part, and the other has a second opening , the second protruding portion is movably disposed in the second opening along a moving direction.5.根据权利要求4所述的浮动式屏蔽机构，其特征在于，该底片体具有一螺孔，该第二凸出部包括依序相连接的一螺帽、一凸台及一螺身，该第二凸出部的该螺身螺接于该底片体的该螺孔，且该凸台穿过该背板上的该第二开口并抵靠该底片体。5 . The floating shielding mechanism according to claim 4 , wherein the base body has a screw hole, and the second protruding portion comprises a nut, a boss and a screw body connected in sequence, The screw body of the second protruding portion is screwed to the screw hole of the bottom sheet body, and the boss passes through the second opening on the back plate and abuts against the bottom sheet body.6.根据权利要求5所述的浮动式屏蔽机构，其特征在于，该第二开口为一长条孔或一椭圆孔，该螺帽的尺寸大于该第二开口的宽度，该第二开口的宽度与长度大于该凸台的尺寸。6 . The floating shielding mechanism according to claim 5 , wherein the second opening is an elongated hole or an oval hole, the size of the nut is larger than the width of the second opening, and the second opening is The width and length are greater than the dimensions of the boss.7.根据权利要求5所述的浮动式屏蔽机构，其特征在于，该第二开口为一圆孔，该螺帽的尺寸大于该第二开口的尺寸，该第二开口的尺寸大于该凸台的尺寸。7 . The floating shielding mechanism of claim 5 , wherein the second opening is a round hole, the size of the nut is larger than the size of the second opening, and the size of the second opening is larger than the boss. 8 . size of.8.根据权利要求1所述的浮动式屏蔽机构，其特征在于，该柔性导体件为导电泡棉。8 . The floating shielding mechanism according to claim 1 , wherein the flexible conductor member is a conductive foam. 9 .9.根据权利要求1所述的浮动式屏蔽机构，其特征在于，该柔性导体件为该屏蔽片的一部分翻折出的一弯折弹片。9 . The floating shielding mechanism according to claim 1 , wherein the flexible conductor member is a bent elastic piece that is folded from a part of the shielding sheet. 10 .10.一种电路板模块，用于组装至一机箱内，该机箱包括位于第一壁上的一机箱开口及位于第二壁上的一机箱固定孔，其特征在于，该电路板模块包括：10. A circuit board module for assembling into a case, the case comprising a case opening on a first wall and a case fixing hole on a second wall, wherein the circuit board module comprises:一电路板，包括贯穿的电路板固定孔及位于顶面的多个输入输出端口；a circuit board, comprising a through-hole fixing hole of the circuit board and a plurality of input and output ports on the top surface;一背板，固定至该电路板的底面；a backplane fixed to the bottom surface of the circuit board;一如权利要求书第1项至第9项中的任一项所述的浮动式屏蔽机构，配置于该电路板与该背板上，a floating shielding mechanism according to any one of claims 1 to 9, disposed on the circuit board and the backplane,其中当该电路板、该背板与浮动式屏蔽机构一起组装至该机箱内时，该柔性导体件用于被压缩，以使该电路板固定孔对位于该机箱固定孔，且使该屏蔽片抵接该机箱开口周围的内壁面。When the circuit board, the backplane and the floating shielding mechanism are assembled into the chassis, the flexible conductor is used to be compressed, so that the circuit board fixing hole is aligned with the chassis fixing hole, and the shielding sheet is Abutting against the inner wall surface around the opening of the case.

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