CN217546422U

CN217546422U - Circuit board assembly and electronic equipment

Info

Publication number: CN217546422U
Application number: CN202220567470.6U
Authority: CN
Inventors: 钟淼林; 毛军峰
Original assignee: Shenzhen Haiyi Zhixin Technology Co Ltd
Current assignee: Shenzhen Haiyi Zhixin Technology Co Ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-10-04
Anticipated expiration: 2032-03-15

Abstract

The embodiment of the application discloses a circuit board assembly and electronic equipment, wherein the circuit board assembly comprises a first circuit board, a second circuit board, an electric connecting piece and a shielding piece, the electric connecting piece is arranged between the first circuit board and the second circuit board, the shielding piece is arranged between the first circuit board and the second circuit board and forms a shielding cavity in an enclosing manner with the first circuit board and the second circuit board, and the electric connecting piece is positioned in the shielding cavity; the shielding piece is electrically connected with the grounding end of the first circuit board and the grounding end of the second circuit board. The electric connecting piece of this application embodiment sets up in the shielding intracavity that shielding piece, first circuit board and second circuit board enclose to close formation, can realize electromagnetic interference's closure for the electromagnetic wave that electric connecting piece work produced neither disturbs other electronic component work, and electric connecting piece also can not receive external electromagnetic wave interference simultaneously, makes electric connecting piece can normally work in the electromagnetic environment of locating, and can not disturb radio frequency antenna working signal.

Description

Circuit board assembly and electronic equipment

Technical Field

The application relates to the technical field of circuit boards, in particular to a circuit board assembly and an electronic device.

Background

In the related art, the number of circuit boards included in the electronic device is increasing, and for the circuit boards distributed at intervals, an electrical connector is usually required to electrically connect the two circuit boards so as to transmit signals. However, the electromagnetic waves generated by the electrical connector during signal transmission are easily interfered with the electromagnetic waves generated by other electronic components, which affects the stability of signal transmission.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a circuit board assembly and electronic equipment, which are used for solving the problem that the electromagnetic waves generated by an electrical connecting piece and the electromagnetic waves generated by other electronic elements in the related art interfere with each other to influence the stability of signal transmission. The technical scheme is as follows;

in a first aspect, an embodiment of the present application provides a circuit board assembly, including:

a first circuit board;

the second circuit board is arranged at intervals with the first circuit board;

the electrical connecting piece is arranged between the first circuit board and the second circuit board and is electrically connected with the first circuit board and the second circuit board;

the shielding part is arranged between the first circuit board and the second circuit board and forms a shielding cavity by being enclosed with the first circuit board and the second circuit board, and the electric connecting part is positioned in the shielding cavity; the shielding piece is electrically connected with the grounding end of the first circuit board and the grounding end of the second circuit board.

The circuit board assembly of this application embodiment, with electric connecting piece set up in the shielding part, first circuit board and second circuit board enclose the shielding intracavity that closes the formation, can realize electromagnetic interference's closure for electric connecting piece work produced electromagnetic wave neither disturbs other electronic component work, and electric connecting piece also can not receive external electromagnetic wave's interference simultaneously, makes electric connecting piece can normally work in the electromagnetic environment of locating. In addition, the shielding part is electrically connected with the grounding end of the first circuit board and the grounding end of the second circuit board, so that the grounding function of the first circuit board and the grounding function of the second circuit board can be realized, a common reference point is formed, the interference effect and the electrostatic shielding effect of electronic elements on the first circuit board and the second circuit board are achieved, the electromagnetic wave generated when the electric connecting part transmits signals is shielded in the shielding cavity, the working signal of the radio frequency antenna cannot be interfered, and meanwhile, the external electromagnetic interference is avoided.

In some embodiments, the electrical connector comprises a first connection terminal and a second connection terminal, the first connection terminal is mounted on the first circuit board and electrically connected with the first circuit board, the second connection terminal is mounted on the second circuit board and electrically connected with the second circuit board, and the second connection terminal is detachably connected with the first connection terminal; or

The electric connection piece comprises a first connection terminal, a second connection terminal and an intermediate piece, the first connection terminal is installed on the first circuit board and electrically connected with the first circuit board, the second connection terminal is installed on the second circuit board and electrically connected with the second circuit board, and the intermediate piece is detachably connected with the second connection terminal and the first connection terminal.

Based on the above embodiment, the electrical connection piece comprises the first connection terminal and the second connection terminal which are detachably connected, so that the electrical connection and the electrical disconnection between the first circuit board and the second circuit board can be transferred to the electrical connection and the electrical disconnection between the first connection terminal and the second connection terminal, and the operation is more convenient. Similarly, when the electrical connector includes the first connecting terminal, the second connecting terminal and the intermediate member, the electrical connection and disconnection operations between the first circuit board and the second circuit board can be facilitated.

In some embodiments, the shield comprises:

the first shielding cover is arranged on the first circuit board and electrically connected with a grounding end of the first circuit board, the first shielding cover and the first circuit board are enclosed to form a first cavity, and at least part of the first connecting terminal is positioned in the first cavity;

the second shielding cover is arranged on the second circuit board and is electrically connected with the grounding end of the second circuit board, the second shielding cover and the second circuit board enclose to form a second cavity, and at least part of the second connecting terminal is positioned in the second cavity;

wherein, the second shield cover with first shield cover can dismantle the connection, the second shield cover is connected during first shield cover, the second cavity with first cavity intercommunication is in order to form the shielding chamber, just the second shield cover with first shield cover electric connection, the second connecting terminal with first connecting terminal electric connection.

Based on the above embodiment, the shielding part includes the first shielding cover corresponding to the first electrical property terminal and the second shielding cover corresponding to the second electrical property terminal, so that the connection of the first shielding cover and the second shielding cover can play a role in pre-positioning when the first connection terminal and the second connection terminal are connected, and the assembly efficiency of the circuit board assembly is improved.

In some embodiments, the first shield has a first opening communicating with the first chamber, and when the second shield is connected to the first shield, at least a portion of the second shield extends into the first chamber of the first shield through the first opening.

Based on the above-mentioned embodiment, the connection stability of the first shield can and the second shield can be improved.

In some embodiments, the first shield can comprises:

the first shielding part is arranged on the first circuit board and is electrically connected with a grounding end of the first circuit board, the first shielding part and the first circuit board are enclosed to form the first cavity, and a first opening communicated with the first cavity is formed in one side, far away from the first circuit board, of the first shielding part;

the second shielding part is positioned on one side, away from the first circuit board, of the first shielding part, one end of the second shielding part is connected with the first shielding part, and the other end of the second shielding part extends towards the direction away from the first circuit board and away from the axis of the opening of the first opening.

Based on above-mentioned embodiment, the second shield can get into first shield and lead to the second shield, promotes the packaging efficiency of second shield and first shield.

In some embodiments, one of a first mounting block and a first mounting hole is disposed on the first shielding cover, the other of the first mounting block and the first mounting hole is disposed on the first circuit board, and the first mounting block is mounted in the first mounting hole and electrically connected to a hole wall surface of the first mounting hole; and/or

The second shielding cover is provided with one of a second mounting block and a second mounting hole, the second circuit board is provided with the other one of the second mounting block and the second mounting hole, and the second mounting block is mounted in the second mounting hole and electrically connected with the hole wall surface of the second mounting hole; and/or

The first shielding cover is provided with one of a clamping portion and a buckling portion, the second shielding cover is provided with the other of the clamping portion and the buckling portion, and when the second shielding cover is connected with the first shielding cover, the clamping portion is clamped in the buckling portion and electrically connected with the buckling portion.

Based on the above-described embodiments, the connection reliability between the first shield can and the first circuit board, between the second shield can and the second circuit board, and between the first shield can and the second shield can be improved.

In some embodiments, a first insulating layer is disposed on an inner wall surface of the first shield case; and/or a second insulating layer is arranged on the inner wall surface of the second shielding cover; and/or a gap between an inner wall surface of the first shield shell and an outer peripheral surface of the first connection terminal is greater than or equal to 0.50mm; and/or a gap between an inner wall surface of the second shield shell and an outer peripheral surface of the second connection terminal is greater than or equal to 0.50mm.

Based on the above-described embodiments, short-circuiting of the first connection terminal and the second connection terminal can be avoided.

In some embodiments, the electrical connector includes a pin header and a socket header, one of the pin header and the socket header is mounted on the first circuit board and electrically connected to the first circuit board, the other of the pin header and the socket header is mounted on the second circuit board and electrically connected to the second circuit board, and the pin header is detachably connected to the socket header; or

The electric connecting piece comprises a first connecting seat, a second connecting seat and a flexible plate, the first connecting seat is mounted on the first circuit board and electrically connected with the first circuit board, the second connecting seat is mounted on the second circuit board and electrically connected with the second circuit board, and the flexible plate is detachably connected with the second connecting seat and the first connecting seat.

Based on the above embodiment, the pin header and the nut header are selected as the electrical connector, or the first connecting seat, the second connecting seat and the flexible plate are selected as the electrical connector, so that on one hand, the pin header, the nut header, the first connecting seat, the second connecting seat and the flexible plate are low in price, and the manufacturing cost is reduced; on the other hand, the connection is also convenient.

In a second aspect, the present application provides an electronic device, comprising:

a housing formed with an accommodation chamber; and

the above-mentioned circuit board assembly, circuit board assembly is located hold the chamber.

The electronic equipment of the embodiment of the application comprises the circuit board assembly, has a better shielding effect, and ensures the stability of the performance of each module in the electronic equipment.

In some embodiments, the housing comprises:

the cover body forms the accommodating cavity and a third opening communicated with the accommodating cavity;

the cover plate is positioned at the third opening of the cover body and covers the third opening;

the baffle is located hold the intracavity and with the apron interval sets up, the second circuit board is located the apron with between the baffle, electrical property connecting piece reaches the shield passes through-hole on the baffle, and is located the baffle is kept away from one side of apron.

Based on the above embodiment, the second circuit board is arranged between the cover plate and the partition plate, so that the installation stability of the circuit board assembly in the shell can be improved.

In some embodiments, a window is disposed on the cover, and the window is disposed corresponding to the shielding element; and/or the electronic equipment further comprises an antenna arranged on the cover body.

Based on above-mentioned embodiment, the setting of window is convenient for the user to observe the installation alignment condition of circuit board assembly, does benefit to the packaging efficiency who promotes circuit board assembly. Because the electric connecting piece is positioned in the shielding cavity of the shielding piece and is electrically connected with the grounding end of the first circuit board and the grounding end of the second circuit board, the electrostatic shielding effect can be achieved, and even if the antenna is arranged on the cover body, the electric connecting piece and the antenna cannot interfere with each other.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective structural view of a circuit board assembly provided in an embodiment of the present application;

fig. 2 is a perspective sectional view of a part of the structure of the circuit board assembly shown in fig. 1;

FIG. 3 is an exploded perspective view of the circuit board assembly shown in FIG. 1;

FIG. 4 is another perspective exploded view of the circuit board assembly shown in FIG. 1;

FIG. 5 is an exploded perspective view of a shield in the circuit board assembly shown in FIG. 1;

fig. 6 is a top view of the first shield case, the first connection terminal, and the first circuit board in the circuit board assembly shown in fig. 1;

fig. 7 is a top view of a second shield case, a second connection terminal, and a second circuit board in the circuit board assembly shown in fig. 1;

fig. 8 is a perspective view of an electronic device provided in an embodiment of the present application;

fig. 9 is a perspective sectional view of the electronic apparatus shown in fig. 8.

Description of the drawings: 100. a circuit board assembly; 110. a first circuit board; 120. a second circuit board; 130. an electrical connector; 131. a first connection terminal; 1311. mother arrangement; 132. a second connection terminal; 1321. arranging needles; 140. a shield; 141. a shielding cavity; 142. a first shield case; 1421. a first chamber; 1422. a first opening; 1423. a first shielding part; 1424. a second shielding part; 1425. a first side plate; 1426. a second side plate; 143. a second shield case; 1431. a second chamber; 1432. a second opening; 1433. a third side plate; 144. a fastening part; 145. a fastening part; 151. a first mounting block; 152. a first mounting hole; 153. a second mounting block; 154. a second mounting hole; 10. an electronic device; 200. a housing; 210. an accommodating chamber; 211. a third opening; 212. a fourth opening; 220. a window; 230. a cover body; 240. a partition plate; 250. and a cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.

Referring to fig. 1 and 2, a circuit board assembly 100 is provided according to an embodiment of the present disclosure. The circuit board assembly 100 includes a first circuit board 110, a second circuit board 120, an electrical connector 130, and a shield 140.

The first circuit board 110 and the second circuit board 120 may be used to provide power supply signals, control signals, etc. for the electronic components. The first circuit board 110 and the second circuit board 120 are spaced apart from each other to provide power supply signals, control signals, and the like for electronic components at different positions. For example, in the rear camera of the electronic device 10 such as a mobile phone, electronic components such as a flash lamp are disposed close to the rear cover, and electronic components such as a photosensitive chip are located behind the lens, so that the electronic components are farther away from the rear cover than the flash lamp.

It should be noted that, in the present application, the first circuit board 110 may be a rigid board, a flexible board, or the like; the second circuit board 120 may be a rigid board, a flexible board, or the like, and the embodiments of the present application do not limit the types of the first circuit board 110 and the second circuit board 120.

The electrical connector 130 is installed between the first circuit board 110 and the second circuit board 120, and is electrically connected to both the first circuit board 110 and the second circuit board 120. The electrical connector 130 is electrically connected to the first circuit board 110 and the second circuit board 120, and can perform a signal transmission function, so as to collect signals of the first circuit board 110 and the second circuit board 120 together, so that the two can be connected to an external device through only one connector, thereby realizing interaction of signals such as a power supply signal and a control signal.

The electrical connector 130 has a problem of electromagnetic wave leakage during signal transmission, and the leaked electromagnetic wave interferes with the antenna radio frequency signal in the electronic device 10, affects the stability of the antenna transmission image, and causes problems of distortion or frame loss; moreover, the signal transmitted in the electrical connecting element 130 is also easily interfered by the external electromagnetic signal, which causes distortion of signal transmission, for example, when the signal transmitted in the electrical connecting element 130 corresponds to the sound signal, the noise of the sound signal may be caused by the interference of the external electromagnetic signal. Therefore, in the embodiment of the present invention, the shielding element 140 is installed between the first circuit board 110 and the second circuit board 120, the shielding element 140, the first circuit board 110 and the second circuit board 120 enclose a shielding cavity 141, and the electrical connector 130 is located in the shielding cavity 141. The shielding member 140 is electrically connected to the ground terminal of the first circuit board 110 and the ground terminal of the second circuit board 120.

The electrical connector 130 is disposed in a shielding cavity 141 formed by the shielding element 140, the first circuit board 110 and the second circuit board 120, so as to achieve electromagnetic interference sealing, so that electromagnetic waves generated by the operation of the electrical connector 130 do not interfere with other electronic components, and meanwhile, the electrical connector 130 is not interfered by external electromagnetic waves, so that the electrical connector 130 can normally operate in an electromagnetic environment where the electrical connector 130 is located. The shielding element 140 may be made of metal or other materials, and the specific material of the shielding element 140 is not limited in this application. For example, the shielding member 140 may be made of cupronickel or the like.

In addition, the shielding element 140 is electrically connected to both the ground terminal of the first circuit board 110 and the ground terminal of the second circuit board 120, so that the ground function of the first circuit board 110 and the second circuit board 120 can be realized to form a common reference point, and the interference effect and the electrostatic shielding effect of the electronic components on the first circuit board 110 and the second circuit board 120 are achieved, so that the electromagnetic wave generated when the electrical connecting element 130 transmits the signal is shielded in the shielding cavity 141, the working signal of the radio frequency antenna is not interfered, and the external electromagnetic interference is avoided.

The electrical connector 130 may be any device with an electrical connection function, which is not limited in the embodiments of the present invention. For example, in an exemplary embodiment, the electrical connector 130 may be an integral structure, and two electrical connection ends of the electrical connector 130 are electrically connected to the first circuit board 110 and the second circuit board 120 by soldering, conductive adhesive, and the like. For example, the electrical connector 130 may be a conductive wire.

It should be noted that the electrical connector 130 may also be integrally connected to the first circuit board 110 and/or the second circuit board 120. For example, when the electrical connector 130 is a flexible board, the conductive film of the electrical connector 130 may be connected to the conductive film of the first circuit board 110, and/or the conductive film of the electrical connector 130 may be connected to the conductive film of the second circuit board 120.

In another exemplary embodiment, the electrical connector 130 may also include a first connection terminal 131 mounted on the first circuit board 110 and electrically connected to the first circuit board 110, and a second connection terminal 132 mounted on the second circuit board 120 and electrically connected to the second circuit board 120, wherein the second connection terminal 132 is detachably connected to the first connection terminal 131 to electrically connect or disconnect the second circuit board 120 and the first circuit board 110. For example, the first connection terminal 131 may include one of the pin header 1321 or the socket 1311 mounted on the first circuit board 110 and electrically connected to the first circuit board 110, the second connection terminal 132 may include the other of the pin header 1321 or the socket 1311 mounted on the second circuit board 120 and electrically connected to the second circuit board 120, and the pin header 1321 and the socket 1311 may be detachably connected to electrically connect or disconnect the second circuit board 120 and the first circuit board 110. When the first connection terminal 131 and the second connection terminal 132 respectively select the bus bar 1311 and the pin bank 1321, connection is facilitated, and the bus bar 1311 and the pin bank 1321 have certain structural strength, so that a supporting effect on the first circuit board 110 or the second circuit board 120 can be achieved.

In the embodiment of the present application, the first connection terminal 131 includes a female pin block 1311, and the second connection terminal 132 includes a pin block 1321. The row bus 1311 may be directly die-bonded to the first circuit board 110 and the row pin 1321 may be directly die-bonded to the second circuit board 120.

In another exemplary embodiment, the electrical connector 130 may also include a first connecting terminal 131 mounted on the first circuit board 110 and electrically connected to the first circuit board 110, a second connecting terminal 132 mounted on the second circuit board 120 and electrically connected to the second circuit board 120, and an intermediate member (not shown) detachably connected to both the second connecting terminal 132 and the first connecting terminal 131. For example, the first connecting terminal 131 includes a first connecting seat mounted on the first circuit board 110 and electrically connected to the first circuit board 110, the second connecting terminal 132 includes a second connecting seat mounted on the second circuit board 120 and electrically connected to the second circuit board 120, and the middle part includes a flexible board detachably connected to both the first connecting seat and the second connecting seat. When the middleware is connected to the first connection terminal 131 and the second connection terminal 132, the middleware may be electrically connected to both the first connection terminal 131 and the second connection terminal 132, so as to electrically connect the first circuit board 110 and the second circuit board 120; when the middleware is disconnected from the first connection terminal 131 or the second connection terminal 132, the first connection terminal 131 and the second connection terminal 132 may be disconnected, and thus the first circuit board 110 and the second circuit board 120 may be disconnected.

Optionally, the shield 140 may include a first shield cover 142 and a second shield cover 143. Specifically, referring to fig. 3, the first shielding cover 142 is mounted on the first circuit board 110 and electrically connected to the ground terminal of the first circuit board 110, the first shielding cover 142 and the first circuit board 110 enclose a first cavity 1421, and at least a portion of the first connecting terminal 131 is located in the first cavity 1421. Referring to fig. 4, the second shield 143 is mounted on the second circuit board 120 and electrically connected to the ground of the second circuit board 120, the second shield 143 and the second circuit board 120 enclose a second cavity 1431, and at least a portion of the second connection terminal 132 is located in the second cavity 1431. Referring to fig. 2 to 4, the second shield 143 is detachably connected to the first shield 142, when the second shield 143 is connected to the first shield 142, the second cavity 1431 is communicated with the first cavity 1421 to form the shield cavity 141, the second shield 143 is electrically connected to the first shield 142, and the second connection terminal 132 is electrically connected to the first connection terminal 131.

It should be noted that, in order to connect the second shield case 143 to the first shield case 142, the second connection terminal 132 at least partially located in the second shield case 143 may be connected to the first connection terminal 131 at least partially located in the first shield case 142, the second shield case 143 may have a second opening 1432 communicating with the second cavity 1431, and the first shield case 142 may have a first opening 1422 communicating with the first cavity 1421, so that when the second shield case 143 is connected to the first shield case 142, the second connection terminal 132 and the first connection terminal 131 may pass through the second opening 1432 and the first opening 1422 to be connected.

In an exemplary aspect, the first connection terminal 131 may be partially located in the first cavity 1421, partially located outside the first cavity 1421 through the first opening 1422, partially located in the second cavity 1431 through the second opening 1432, and partially located outside the second cavity 1431. In another exemplary scheme, the first connection terminal 131 may be partially located in the first cavity 1421, partially located outside the first cavity 1421 through the first opening 1422, and the second connection terminal 132 may be entirely located in the second cavity 1431. In still another exemplary aspect, the first connection terminal 131 may be entirely located in the first cavity 1421, the second connection terminal 132 may be partially located in the second cavity 1431, and partially located outside the second cavity 1431 through the second opening 1432. In still another exemplary aspect, the first connection terminal 131 may be entirely located in the first chamber 1421, and the second connection terminal 132 may be entirely located in the second chamber 1431.

The second shield 143 may be connected to the first shield 142 by an abutment, a snap connection, a fitting connection, or the like, which is not limited in this embodiment. Wherein, the snap-fit connection can be: referring to fig. 5, the second shield case 143 has one of the engaging portion 144 and the engaging portion 145, the first shield case 142 has the other of the engaging portion 144 and the engaging portion 145, and the engaging portion 144 is connected to the engaging portion 145. The embedded connection may be: at least a portion of the second shield 143 extends into the first chamber 1421 of the first shield 142 through the first opening 1422, or at least a portion of the first shield 142 extends into the second chamber 1431 of the second shield 143 through the second opening 1432.

For example, an opening surface of the second shield case 143 forming the second opening 1432 may be provided with one of the engaging portion 144 and the engaging portion 145, or an inner wall surface of the second shield case 143 may be provided with one of the engaging portion 144 and the engaging portion 145, or an outer wall surface of the second shield case 143 may be provided with one of the engaging portion 144 and the engaging portion 145. Specifically, when one of the engaging portion 144 and the engaging portion 145 is provided on the opening surface of the second shield cover 143 forming the second opening 1432, the other of the engaging portion 144 and the engaging portion 145 may be provided on the opening surface of the first shield cover 142 forming the first opening 1422, so that when the second shield cover 143 is connected to the first shield cover 142, the second shield cover 143 abuts against the first shield cover 142 and the engaging portion 144 is connected to the engaging portion 145. When one of the engaging portion 144 and the engaging portion 145 is provided on the inner wall surface of the second shield case 143, the other of the engaging portion 144 and the engaging portion 145 may be provided on the outer wall surface of the first shield case 142, so that when the second shield case 143 is connected to the first shield case 142, the first shield case 142 extends into the second shield case 143 and the engaging portion 144 is connected to the engaging portion 145. When one of the engaging portion 144 and the engaging portion 145 is disposed on the outer wall surface of the second shield cover 143, the other of the engaging portion 144 and the engaging portion 145 may be disposed on the inner wall surface of the first shield cover 142, so that when the second shield cover 143 is connected to the first shield cover 142, the second shield cover 143 extends into the first shield cover 142, and the engaging portion 144 is connected to the engaging portion 145, as shown in fig. 2 and 5.

Alternatively, the engaging portion 144 may be formed by the first shielding cover 142 protruding toward the first cavity 1421, and the engaging portion 145 may be a through hole.

Taking the example that at least a portion of the second shielding cover 143 passes through the first opening 1422 and extends into the first cavity 1421 of the first shielding cover 142, at this time, the first shielding cover 142 may include a first shielding part 1423 and a second shielding part 1424, the first shielding part 1423 is mounted on the first circuit board 110 and electrically connected to the ground terminal of the first circuit board 110, the first shielding part 1423 and the first circuit board 110 enclose to form the first cavity 1421, and a first opening 1422 communicated with the first cavity 1421 is formed on one side of the first shielding part 1423 away from the first circuit board 110. The second shielding part 1424 is located on a side of the first shielding part 1423 away from the first circuit board 110, and is connected to the first shielding part 1423 at one end of the second shielding part 1424 at the first opening 1422, and the other end extends toward a direction away from the first circuit board 110 and away from an opening axis of the first opening 1422. So that the second shield part 1424 can guide the second shield 143 into the first cavity 1421, and facilitate the smooth connection between the second shield 143 and the first shield 142. Alternatively, the angle of the second shielding part 1424 to the opening axis of the first opening 1422 may be 30 °.

Optionally, the first shielding part 1423 may include a plurality of first side plates 1425, the plurality of first side plates 1425 are sequentially connected to form a first annular structure, one end port of the first annular structure is mounted on the first circuit board 110, another end port of the first annular structure forms the first opening 1422, the second shielding part 1424 may include a second side plate 1426 correspondingly connected to at least one of the first side plates 1425, and the second side plate 1426 extends toward a direction away from the first circuit board 110 and away from a central axis of the first annular structure. The cross section of the first annular structure may be circular, polygonal, etc., which is not limited in this application. The second side plate 1426 may be angled 30 ° from the direction of the central axis of the first ring structure. In fig. 5, it is shown that the first shielding part 1423 includes four first side plates 1425, and the cross section of the first annular structure formed by the four first side plates 1425 is substantially rectangular. The second shield part 1424 includes four second side plates 1426 corresponding to the respective first side plates 1425.

The second shield cover 143 may include a plurality of third side plates 1433, the plurality of third side plates 1433 are sequentially connected to form a second ring structure, one end port of the first ring structure is mounted to the second circuit board 120, and another port of the second ring structure forms a second opening 1432. The cross section of the second annular structure may be circular, polygonal, etc., which is not limited in the embodiments of the present application. The first shielding part 1423 includes four third side plates 1433, and a cross section of a second annular structure formed by the four third side plates 1433 is substantially rectangular as shown in fig. 5.

Alternatively, referring to fig. 3 to 5, the first shielding case 142 and the first circuit board 110 may be connected through the first mounting block 151 and the first mounting hole 152. Specifically, one of the first mounting block 151 and the first mounting hole 152 may be disposed on the first shield 142, the other one of the first mounting block 151 and the first mounting hole 152 may be disposed on the first circuit board 110, and the first mounting block 151 is mounted in the first mounting hole 152 and electrically connected to a hole wall surface of the first mounting hole 152. For example, the first shielding case 142 may be provided with a first mounting block 151, the first circuit board 110 may be provided with a first mounting hole 152, and a hole wall surface of the first mounting hole 152 may be plated with copper and grounded, so that the first shielding case 142 and the ground end of the first circuit board 110 may be electrically connected after the first mounting block 151 is mounted in the first mounting hole 152.

Alternatively, the second shield 143 and the second circuit board 120 may be connected by the second mounting block 153 and the second mounting hole 154. Specifically, one of the second mounting block 153 and the second mounting hole 154 may be disposed on the second shield 143, the other of the second mounting block 153 and the second mounting hole 154 may be disposed on the second circuit board 120, and the second mounting block 153 is mounted in the second mounting hole 154 and electrically connected to a hole wall surface of the second mounting hole 154. For example, the second shielding cover 143 may be provided with a second mounting block 153, the second circuit board 120 may be provided with a second mounting hole 154, and a hole wall surface of the second mounting hole 154 may be plated with copper and grounded, so that the second shielding cover 143 may be electrically connected to the ground end of the second circuit board 120 after the second mounting block 153 is mounted in the second mounting hole 154.

Alternatively, a first insulating layer may be provided on an inner wall surface of the first shield case 142 to prevent the first connection terminal 131 from being short-circuited. Optionally, a second insulating layer is provided on an inner wall surface of the second shield case 143 to prevent the second connection terminal 132 from being short-circuited.

Optionally, a gap between an inner wall surface of the first shielding case 142 and an outer circumferential surface of the first connection terminal 131 is greater than or equal to 0.50mm to ensure that there is a sufficient gap between the inner wall surface of the first shielding case 142 and the first connection terminal 131 to avoid short circuit of the first connection terminal 131.

Referring to fig. 6, when the cross section of the inner wall surface of the first shielding part 1423 of the first shielding can 142 is substantially a first rectangle, and the first connection terminal 131 includes the bar 1311, the cross section of the outer wall surface of the bar 1311 may be substantially a second rectangle, the long side of the first rectangle may be substantially parallel to the long side of the second rectangle, and the distance h1 therebetween may be greater than or equal to 1.73mm; the short side of the first rectangle may be substantially parallel to the short side of the second rectangle and the spacing h2 therebetween may be greater than or equal to 1.18mm.

Optionally, a gap between the inner wall surface of the second shield case 143 and the outer circumferential surface of the second connection terminal 132 is greater than or equal to 0.50mm to ensure a sufficient gap between the inner wall surface of the second shield case 143 and the second connection terminal 132 to avoid short-circuiting of the second connection terminal 132.

Referring to fig. 7, when the cross section of the inner wall surface of the second shielding case 143 is substantially a third rectangle, and the second connection terminal 132 includes a pin header 1321, the pin header 1321 includes a plurality of pins, and the plurality of pins are substantially arranged in a matrix shape distributed along the length direction and the width direction of the third rectangle, and a distance h3 between a pin close to the long side of the third rectangle and the long side among the plurality of pins may be greater than or equal to 0.50mm; among the plurality of stitches, a distance h4 between a stitch close to a short side of the third rectangle and the long side may be greater than or equal to 1.59mm.

In a second aspect, referring to fig. 8 and 9, an electronic device 10 is provided in an embodiment of the present application. The electronic device 10 may be any device having the circuit board assembly 100, such as a mobile phone, a computer, an instrument, a meter, and the like, which is not limited in this embodiment. The electronic device 10 may include a housing 200 and a circuit board assembly 100, the housing 200 is formed with a receiving cavity 210, and the circuit board assembly 100 is located in the receiving cavity 210.

Optionally, the housing 200 is formed with a window 220 communicating with the receiving cavity 210, and the window 220 is disposed corresponding to the shielding member 140 of the circuit board assembly 100. More specifically, the window 220 is disposed corresponding to the engaging

portions

144 and 145 of the first and

second shielding cases

142 and 143 of the shielding element 140, so that a user can observe whether the first and

second shielding cases

142 and 143 are aligned through the window 220, thereby improving the assembly efficiency of the electronic device 10.

Optionally, the housing 200 may include a cover 230, a partition 240, and a cover plate 250, where the cover 230 forms an accommodating cavity 210, and a third opening 211 and a fourth opening 212 communicated with the accommodating cavity 210, the cover plate 250 is located at the third opening 211 of the cover 230 and covers the third opening 211, the partition 240 is located in the accommodating cavity 210 and is spaced apart from the cover plate 250, the second circuit board 120 is located between the cover plate 250 and the partition 240, and the electrical connector 130 and the second shielding cover 143 pass through a through hole on the partition 240 and are located on a side of the partition 240 away from the cover plate 250. Wherein, the cover 230 is provided with a window 220.

Alternatively, the cover plate 250 and the cover body 230 may be connected by any means such as clamping, screwing, and the like, and the second circuit board 120 and the partition 240 may be connected by any means such as screwing, and the embodiment of the present invention is not limited thereto.

Optionally, the electronic device 10 further includes an antenna mounted on the cover 230, and since the electrical connector 130 is located in the shielding cavity 141 of the shielding member 140 and the electrical connector 130 is electrically connected to the ground terminal of the first circuit board 110 and the ground terminal of the second circuit board 120, the electronic device can perform an electrostatic shielding function and does not interfere with the antenna on the cover 230.

In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.

Claims

1. A circuit board assembly, comprising:

a first circuit board;

the second circuit board is arranged at intervals with the first circuit board;

2. The circuit board assembly according to claim 1, wherein the electrical connector comprises a first connecting terminal and a second connecting terminal, the first connecting terminal is mounted on the first circuit board and electrically connected to the first circuit board, the second connecting terminal is mounted on the second circuit board and electrically connected to the second circuit board, and the second connecting terminal is detachably connected to the first connecting terminal; or

3. The circuit board assembly of claim 2, wherein the shield comprises:

the second shielding cover is arranged on the second circuit board and is electrically connected with a grounding end of the second circuit board, the second shielding cover and the second circuit board are enclosed to form a second cavity, and at least part of the second connecting terminal is positioned in the second cavity;

4. The circuit board assembly of claim 3, wherein the first shield has a first opening in communication with the first cavity, and wherein at least a portion of the second shield extends into the first cavity of the first shield through the first opening when the second shield is coupled to the first shield.

5. The circuit board assembly of claim 4, wherein the first shield can comprises:

6. The circuit board assembly of claim 3,

the first shielding cover is provided with one of a first mounting block and a first mounting hole, the first circuit board is provided with the other one of the first mounting block and the first mounting hole, and the first mounting block is mounted in the first mounting hole and electrically connected with the hole wall surface of the first mounting hole; and/or

The second shielding cover is provided with one of a second mounting block and a second mounting hole, the second circuit board is provided with the other of the second mounting block and the second mounting hole, and the second mounting block is mounted in the second mounting hole and electrically connected with the hole wall surface of the second mounting hole; and/or

7. The circuit board assembly according to claim 3, wherein an inner wall surface of the first shield case is provided with a first insulating layer; and/or a second insulating layer is arranged on the inner wall surface of the second shielding cover; and/or a gap between an inner wall surface of the first shield shell and an outer peripheral surface of the first connection terminal is greater than or equal to 0.50mm; and/or a gap between an inner wall surface of the second shield shell and an outer peripheral surface of the second connection terminal is greater than or equal to 0.50mm.

8. The circuit board assembly according to claim 1, wherein the electrical connector comprises a pin header and a socket header, one of the pin header and the socket header is mounted on the first circuit board and electrically connected to the first circuit board, the other of the pin header and the socket header is mounted on the second circuit board and electrically connected to the second circuit board, and the pin header is detachably connected to the socket header; or

9. An electronic device, comprising:

a housing formed with an accommodation chamber; and

the circuit board assembly of any one of claims 1-8, located in the receiving cavity.

10. The electronic device of claim 9, wherein the housing comprises:

11. The electronic device of claim 10, wherein the housing has a window disposed therein, the window being disposed in correspondence with the shield; and/or the electronic equipment further comprises an antenna arranged on the cover body.