CN220191330U

CN220191330U - Circuit board assembly and electronic equipment

Info

Publication number: CN220191330U
Application number: CN202320796880.2U
Authority: CN
Inventors: 林洪峰; 陈金榜; 唐辉俊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-12-15
Anticipated expiration: 2033-04-07

Abstract

The embodiment of the utility model provides a circuit board assembly and electronic equipment. The edge of the shielding cover is clamped in a fixing clamp on the circuit board, and the fixing clamp is used for fixing the shielding cover at least in the first direction and the second direction. The shielding cover is arranged on the guide piece, and the guide piece is at least abutted with the inner wall of the shielding cover in the first direction and the second direction, so that the guide piece provides guidance for the installation of the shielding cover at least in the first direction and the second direction. The shielding cover can be effectively reduced or avoided from shifting in the installation process, and the situation that the shielding cover is poor in buckling is reduced or avoided, so that the qualification rate of the electronic equipment is effectively improved. In addition, the secondary buckling can be effectively avoided, so that the assembly efficiency of the electronic equipment is effectively improved.

Description

Circuit board assembly and electronic equipment

Technical Field

The present utility model relates to the field of electronic technologies, and in particular, to a circuit board assembly and an electronic device.

Background

Electronic devices have very wide applications in people's lives, such as notebook computers, desktop computers, and the like. Electronic devices generally need to transmit and receive signals during operation to implement communication functions of the electronic devices. With the continuous development and update of electronic technology, people have higher and higher requirements along with the performance of electronic equipment.

In general, in order to reduce or avoid interference of a storage chip in an electronic device to signals of the electronic device, a shielding cover is disposed on the storage chip of the electronic device to shield signals of the storage chip. In the related art, a plurality of fixing clips are generally provided on a circuit board of an electronic device, and the plurality of fixing clips are disposed around an edge of a shielding cover so that the edge of the shielding clip can be caught in the fixing clips.

However, in the above arrangement, the shielding cover is easy to be dislocated in the process of being matched with the fixing clip, so that the shielding cover is in poor buckling, and the assembly efficiency and qualification rate of the electronic equipment are reduced.

Disclosure of Invention

The utility model provides a circuit board assembly and electronic equipment, which are used for solving the problems that in the traditional circuit board assembly, the shielding cover is easy to be misplaced in the matching process of the shielding cover and a fixing clamp, so that the shielding cover is not buckled well, and the assembly efficiency and the qualification rate of the electronic equipment are reduced.

A first aspect of the present utility model provides a circuit board assembly comprising a circuit board, a memory disposed on the circuit board, and a shield cover disposed over the memory;

the shielding cover is characterized by further comprising a plurality of fixing clamps arranged on the circuit board, wherein the fixing clamps are arranged along the periphery of the shielding cover, the edges of the shielding cover are clamped in the fixing clamps, the fixing clamps are used for fixing the shielding cover at least in a first direction and a second direction, and the first direction and the second direction are arranged at an angle;

the shielding cover is further arranged on the guide piece in a covering mode, and the guide piece is at least in butt joint with the inner walls of the shielding cover in the first direction and the second direction, so that the guide piece provides guidance for installation of the shielding cover at least in the first direction and the second direction.

Through the direction of guide piece to shielding lid, can effectively reduce or avoid shielding lid to take place the skew at the in-process of installation, make the edge of shielding lid can be with the fixation clamp accurate alignment to in making the shielding lid can insert the fixation clamp smoothly, can effectively reduce or avoid shielding lid to appear the poor condition of lock, thereby effectively improve electronic equipment's qualification rate. In addition, the secondary buckling can be effectively avoided, so that the assembly efficiency of the electronic equipment is effectively improved.

In one possible implementation manner, the shielding cover at least comprises a first side wall, a second side wall, a third side wall and a fourth side wall which are connected end to end in sequence;

the first side wall and the third side wall are arranged opposite to each other and extend along the first direction, and the second side wall and the fourth side wall are arranged opposite to each other and extend along the second direction;

the fixing clamp is arranged along the first side wall, the second side wall, the third side wall and the fourth side wall, and the first side wall, the second side wall, the third side wall and the fourth side wall are respectively clamped in the fixing clamp. The shield cover may be fixed to the circuit board by a fixing clip.

In one possible implementation manner, the number of the guide pieces is two, and one of the two guide pieces is arranged near the position where the first side wall and the second side wall intersect and is abutted against the first side wall and the second side wall;

the other guide piece of the two guide pieces is arranged near the intersection position of the second side wall and the third side wall and is abutted against the second side wall and the third side wall. The two guide pieces can respectively guide the shielding cover in the first direction and the second direction through the butt with the first side wall, the second side wall and the third side wall so as to avoid the dislocation of the shielding cover in the first direction and the second direction, thereby effectively improving the installation precision of the shielding cover, improving the reliability and the stability of the buckling between the shielding cover and the fixing clamp and improving the product qualification rate of the electronic equipment.

In one possible implementation, the guide includes first and second guide sidewalls connected and angularly disposed;

the first guide side wall in one guide piece is abutted against the first side wall of the shielding cover, and the second guide side wall is abutted against the second side wall of the shielding cover;

the first guide side wall of the other guide piece is abutted against the third side wall of the shielding cover, and the second guide side wall is abutted against the second side wall of the shielding cover.

In one possible implementation, the guide has a positioning post on an end facing the circuit board;

the circuit board is provided with a positioning hole matched with the positioning column, and the positioning column is inserted into the first positioning hole. The cooperation of reference column and locating hole can play the positioning action to the setting of guide on the circuit board to reduce or avoid the position that the guide set up on the circuit board to take place the skew, help improving the accuracy that the guide set up on the circuit board. In addition, the situation that the guide piece is toppled or turned over in the process of being connected with the circuit board can be reduced or avoided, the reliability and stability of connection between the guide piece and the circuit board can be improved, and the overall structural stability of the circuit board assembly is improved.

In one possible implementation, a gap is formed between the inner wall of the positioning hole and the outer side wall of the positioning column, and the minimum distance between the inner wall of the positioning hole and the outer side wall of the positioning column is 0.1 mm-0.15 mm. Therefore, the positioning column can be conveniently inserted into the positioning hole, the blocking phenomenon in the process of inserting the positioning column into the positioning hole can be reduced or avoided, and the matching reliability and stability between the positioning column and the positioning hole are improved.

In one possible implementation, an angle between the first guide sidewall and the second guide sidewall in one of the guides is equal to an angle between the first sidewall and the second sidewall;

the angle between the first guide side wall and the second guide side wall in the other guide piece is equal to the angle between the third side wall and the second side wall. Therefore, the fitting degree between the guide piece and the inner wall of the shielding cover can be effectively improved, the reliability and stability of the guide piece on the guiding of the shielding cover can be improved, and the installation reliability of the shielding cover can be improved.

In one possible implementation, the angle between the first and second guide side walls and between the first and second side walls in one of the guides are both 90 °;

the angle between the first guide side wall and the second guide side wall and the angle between the second side wall and the third side wall in the other guide piece are 90 degrees.

In one possible implementation, the guide further includes a support sidewall at an end of the first guide sidewall remote from the second guide sidewall, and disposed at an angle to the first guide sidewall;

and/or, the supporting side wall is far away from one end of the first guiding side wall, and an angle is formed between the supporting side wall and the second guiding side wall. The support side wall can provide support for the guide piece, can avoid the guide piece to topple over or turn on one's side, helps improving reliability and stability that the guide piece set up on the circuit board.

In one possible implementation, the guide further comprises a flange structure;

the flanging structure is located at one end, far away from the circuit board, of the guide piece, and is connected with the first guide side wall and the second guide side wall. The flanging structure can play a role of reinforcing ribs, is beneficial to improving the structural strength and rigidity of the guide piece, and can reduce or avoid bending deformation of the guide piece, so that the structural stability of the guide piece is effectively improved.

In one possible implementation, the guide further includes a gripping portion at an end of the guide remote from the circuit board. The mechanical arm can conveniently grasp the guide piece, so that the reliability and stability of the mechanical arm grasping the guide piece can be improved, and the reliability of the guide piece assembly can be improved.

A second aspect of the utility model provides an electronic device comprising a circuit board assembly as described in any one of the preceding claims.

Drawings

Fig. 1 is a schematic structural diagram of a circuit board assembly according to an embodiment of the present utility model;

fig. 2 is an exploded view of a circuit board assembly according to an embodiment of the present utility model;

fig. 2a is a schematic structural diagram of a memory connector according to an embodiment of the present utility model when the memory connector is mounted on a circuit board;

FIG. 2b is a schematic diagram of a memory according to an embodiment of the present utility model when the memory is mounted on a circuit board;

fig. 3 is a schematic structural diagram of a state in the process of assembling a shielding member and a circuit board according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a shielding member after being assembled on a circuit board according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a shielding cover according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a fixing clip distributed on a circuit board according to an embodiment of the present utility model;

FIG. 7 is a schematic view of one of the guide members according to an embodiment of the present utility model;

FIG. 8 is a schematic view of another guide member according to an embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a pad disposed on a circuit board according to an embodiment of the present utility model;

fig. 10 is an enlarged view of area a of fig. 9;

FIG. 11 is an enlarged view of region B of FIG. 9;

FIG. 12 is an enlarged view of area C of FIG. 9;

fig. 13 is a schematic structural diagram of a positioning post and a positioning hole according to an embodiment of the present utility model.

Reference numerals illustrate:

100-a circuit board assembly;

110-a circuit board; 111. 111a, 111 b-a first set of pads; 112-a second set of pads;

113. 113a, 113 b-positioning holes;

120-memory;

130-shielding cover; 131-a first sidewall; 132-a second sidewall; 133-a third sidewall; 134-fourth side wall; 135-top wall;

140-fixing clips;

150. 150a, 150 b-guides; 151. 151a, 151 b-a first guide sidewall;

152. 152a, 152 b-a second guide sidewall; 153. 153a, 153 b-positioning posts;

154. 154a, 154 b-support sidewalls; 155. 155a, 155 b-flanging structure; 156. 156a, 156 b-grips;

160-storage connector.

Detailed Description

The terminology used in the description of the embodiments of the utility model herein is for the purpose of describing particular embodiments of the utility model only and is not intended to be limiting of the utility model.

The electronic device provided by the embodiment of the utility model can be any electronic device with a circuit board assembly, such as a tablet personal computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a mobile phone, an interphone, a netbook, a POS machine, a personal digital assistant (personal digital assistant, PDA), a virtual reality device, a vehicle-mounted device and the like.

In the embodiment of the utility model, taking the electronic equipment as a notebook computer as an example, the electronic equipment can comprise a circuit board assembly, and the circuit board assembly can comprise a circuit board and electronic components arranged on the circuit board so as to realize the complete functions of the electronic equipment. For example, a radio frequency chip may be disposed on the circuit board, and the radio frequency chip may emit an electromagnetic wave signal, which may be emitted outward through an antenna, so that the electronic device may implement a communication function.

The circuit board may also be provided with a memory, for example, the memory may be a memory chip, for example, the memory may be a Double Data Rate (DDR) memory, for example, the memory may be a small-outline double-row memory module (small outline dual in-line memory module; SO-DIMM for short), and in the process of working the electronic device, signals generated by the memory may interfere signals of the radio frequency chip, which easily causes problems such as poor signal reception or flash back of the wireless network of the electronic device. In order to reduce or avoid signal interference of the memory to the radio frequency chip, a shielding cover may be disposed on the circuit board, and the shielding cover may be disposed on the memory to shield signals of the memory.

Currently, in the related art, a plurality of fixing clips are generally provided on a circuit board, the plurality of fixing clips are disposed around the outer circumference of a shielding cover, and edges of the shielding cover are caught in the fixing clips, so that the shielding cover can be mounted on the circuit board by the fixing clips. However, the size of the shield cover is generally large, and the fixing clips are disposed at the outer periphery of the shield cover in a dispersed manner. Therefore, in the process of installing the shielding cover, the shielding cover is easy to misplace or deviate, so that the shielding cover is in poor buckling, and the qualification rate of the electronic equipment is reduced.

Moreover, when the shielding cover is in a poor buckling condition, the shielding cover is required to be buckled secondarily, so that the assembly efficiency of the electronic equipment is reduced.

In order to solve the problems, researchers want to improve the structure of the circuit board assembly, and can play an effective guiding role on the shielding cover by arranging the guide piece on the circuit board, so that dislocation of the shielding cover in the installation process is reduced or avoided, the situation that the shielding cover is dislocated and is buckled poorly is prevented, and the qualification rate of electronic equipment is effectively improved.

The circuit board assembly provided by the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a circuit board assembly according to an embodiment of the present utility model, fig. 2 is an exploded view of a circuit board assembly according to an embodiment of the present utility model, fig. 2a is a schematic structural view of a memory connector according to an embodiment of the present utility model when the memory connector is mounted on a circuit board, fig. 2b is a schematic structural view of a memory according to an embodiment of the present utility model when the memory is mounted on a circuit board, fig. 3 is a schematic structural view of a shielding member and a circuit board during an assembly process according to an embodiment of the present utility model, and fig. 4 is a schematic structural view of a shielding member after the assembly of the shielding member on the circuit board according to an embodiment of the present utility model is completed.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a circuit board assembly 100, and the circuit board assembly 100 may include a circuit board 110, a memory 120 disposed on the circuit board 110, and a shielding cover 130 covering the memory 120. The memory 120 may be used to store data information in an electronic device, for example, a memory connector 160 (see fig. 2a and 2 b) may also be provided on the circuit board 110, for example, when the memory 120 is an SO-DIMM memory, the memory connector 160 may be an SO-DIMM connector. For example, the storage connector 160 and the circuit board 110 may be electrically connected by soldering, the storage connector 160 may be electrically connected to the memory 120, for example, the storage connector 160 may have a socket (not shown) that mates with the memory 120, and the memory 120 may be inserted into the socket to electrically connect to the storage connector 160, so that the memory 120 may be electrically connected to the circuit board 110 through the storage connector 160. The shielding cover 130 can shield the signals of the memory 120 to reduce or avoid interference of the signals of the memory 120 to the signals of the radio frequency chip of the electronic device, so as to prevent the electronic device from poor signal reception, flash back and the like, and thus, the stability of the operation of the electronic device is improved.

The electronic device may further include a plurality of fixing clips 140 disposed on the circuit board 110, wherein the plurality of fixing clips 140 may be disposed along the outer circumference of the shielding cover 130, and edges of the shielding cover 130 may be caught in the fixing clips 140. The plurality of fixing clips 140 may fix the shielding cover 130 at least in a first direction (see x-direction in fig. 2) and a second direction (see y-direction in fig. 2) so that the shielding cover 130 may be mounted on the circuit board 110 by the fixing clips 140 to prevent the shielding cover 130 from falling.

The first direction and the second direction may be disposed at an angle, for example, as shown in fig. 2, the first direction may be a width direction of the shielding cover 130 shown in fig. 2, and the second direction may be a length direction of the shielding cover 130 shown in fig. 2. For example, the shielding cover 130 may be rectangular, in which case the first direction and the second direction may be perpendicular to each other, or, in some examples, the shielding cover 130 may also be triangular, parallelogram, irregular shape, etc., and the included angle between the first direction and the second direction may be correspondingly different according to the shape of the shielding cover 130. In the embodiment of the present utility model, the first direction and the second direction are described as being perpendicular.

For example, a portion of the fixing clips 140 may be distributed along the outer circumference of the shielding cover 130 along the first direction (i.e., the x direction in fig. 2), and after the edge of the shielding cover 130 is clamped on the fixing clips 140 located in the first direction, the fixing clips 140 may provide a limiting fixation to the shielding cover 130 in the second direction (i.e., the y direction in fig. 2) so as to prevent the shielding cover 130 from moving in the second direction. Accordingly, another portion of the fixing clips 140 may be distributed on the periphery of the shielding cover 130 along the second direction, and when the edge of the shielding cover 130 is clamped on the fixing clip 140 located in the second direction, the fixing clip 140 may provide a limiting fixation for the shielding cover 130 in the first direction, so as to prevent the shielding cover 130 from moving in the first direction. Thus, the shielding cover 130 can be provided with the limiting fixation in the first direction and the second direction by the fixing clips 140 distributed in two directions, so that the shielding cover 130 can be fixed on the circuit board 110.

The circuit board assembly 100 may further include at least one guide 150 disposed on the circuit board 110, the shielding cover 130 is further disposed on the guide 150, and the shielding member is abutted against at least inner walls of the shielding cover 130 in the first direction and the second direction, so that the guide 150 may provide a guide for the installation of the shielding cover 130 in at least the first direction and the second direction.

For example, referring to fig. 2a, during assembly of the circuit board assembly 100, the guide 150, the fixing clip 140, and the storage connector 160 may be disposed on the circuit board 110, for example, the guide 150, the fixing clip 140, and the storage connector 160 may be disposed on the circuit board 110 by welding, fastening, clamping, or the like. As shown in fig. 2b, after the assembly of the guide 150, the fixing clip 140 and the storage connector 160 on the circuit board 110 is completed, the memory 120 may be inserted into the insertion port of the storage connector 160 to complete the assembly of the memory 120 on the circuit board 110.

Referring to fig. 3, after the assembly of the memory 120 is completed, the shielding cover 130 may be assembled, for example, during the process of installing the shielding cover 130, the shielding cover 130 may be first placed on the guide 150, and a sidewall (for example, the second sidewall 132 in fig. 3) of the shielding cover 130 extending in the second direction (i.e., the y-direction in fig. 3) may abut against the guide 150, so that the guide 150 provides a limit to the shielding cover 130 in the first direction (i.e., the x-direction in fig. 3) to prevent the shielding cover 130 from being deviated in the first direction.

The side walls of the shield cover 130 (e.g., the second side walls 132 of fig. 3) extending in the second direction may be aligned with the fixing clips 140 distributed in the second direction by the restraining action of the guide 150 in the first direction. Pressing the side wall of the shield cover 130 aligned with the fixing clip 140 toward the direction of the fixing clip 140 (i.e., the z-direction in fig. 3) allows the side wall of the shield cover 130 to be accurately inserted into the fixing clip 140 to connect the side wall of the shield cover 130 with the fixing clip 140. At this time, the shielding cover 130 may be in an inclined state as shown in fig. 3, and other sidewalls of the shielding cover 130 are not yet connected with the respective corresponding fixing clips 140.

As shown in fig. 4, after the assembly of the second side wall of the shielding cover 130 and the fixing clip 140 is completed, at this time, the side walls of the shielding cover 130 extending in the first direction (for example, the first side wall 131 and the side wall opposite to the first side wall in fig. 4) also abut against the guide 150, and the guide 150 may provide a limit to the shielding cover 130 in the second direction (i.e., the y direction in fig. 4) to prevent the shielding cover 130 from being deviated in the second direction.

This aligns the side walls of the shield cover 130 extending in the first direction (i.e., the x-direction in fig. 4) with the retaining clips 140 distributed in the first direction. At this time, the side wall of the shielding cover 130 is pressed toward the direction of the fixing clip 140 (i.e., the z direction in fig. 4), so that the remaining side wall of the shielding cover 130 is inserted into the opposite fixing clip 140, thereby completing the installation operation of the shielding cover 130 on the circuit board 110.

Compared with the scheme in the related art, the embodiment of the utility model can effectively reduce or avoid the deviation of the shielding cover 130 in the installation process by guiding the shielding cover 130 through the guide piece 150, so that the edge of the shielding cover 130 can be precisely aligned with the fixing clamp 140, the shielding cover 130 can be smoothly inserted into the fixing clamp 140, the situation of poor buckling of the shielding cover 130 can be effectively reduced or avoided, and the qualification rate of electronic equipment is effectively improved. In addition, the secondary buckling can be effectively avoided, so that the assembly efficiency of the electronic equipment is effectively improved.

Fig. 5 is a schematic structural view of a shielding cover according to an embodiment of the present utility model, and fig. 6 is a schematic structural view of a fixing clip distributed on a circuit board according to an embodiment of the present utility model.

Referring to fig. 5, in an embodiment of the present utility model, the shielding cover 130 may include at least a first sidewall 131, a second sidewall 132, a third sidewall 133, and a fourth sidewall 134 connected in sequence, for example, the shielding cover 130 may further include a top wall 135, and the first sidewall 131, the second sidewall 132, the third sidewall 133, and the fourth sidewall 134 may be fanned to enclose the top wall 135. Wherein the first sidewall 131 and the third sidewall 133 may be disposed opposite to each other and each extend along a first direction (i.e., x-direction in fig. 5), and the second sidewall 132 and the fourth sidewall 134 may be disposed opposite to each other and each extend along a second direction (i.e., y-direction in fig. 5). As shown in fig. 6, the fixing clip 140 may be disposed along the first, second, third and fourth sidewalls 131, 132, 133 and 134, and the first, second, third and fourth sidewalls 131, 132, 133 and 134 may be respectively caught in the fixing clip 140. So that the shield cover 130 can be fixed to the circuit board 110 by the fixing clip 140.

With continued reference to fig. 6, the number of guides 150 may be two, one guide 150 of the two guides 150 may be disposed near a position near where the first and second sidewalls 131 and 132 intersect, and the guide 150 may abut the first and second sidewalls 131 and 132. Another guide 150 may be disposed near a position where the second and third sidewalls 132 and 133 meet, and the guide 150 may abut against the second and third sidewalls 132 and 133.

For example, the two guides 150 may be a guide 150a and a guide 150b, respectively, the guide 150a may be disposed near a position near where the first and second sidewalls 131 and 132 meet, and the guide 150a may abut against the first and second sidewalls 131 and 132. The guide 150b may be disposed near a position where the second and third sidewalls 132 and 133 meet, and the guide 150b may abut against the second and third sidewalls 132 and 133.

The guide 150a may guide the shield cover 130 in the first and second directions by abutting the first and second sidewalls 131 and 132 to reduce or avoid misalignment of the shield cover 130 in the first and second directions. The guide member 150b can guide the shielding cover 130 in the first direction and the second direction through the abutting connection with the second side wall 132 and the third side wall 133, so as to avoid the dislocation of the shielding cover 130 in the first direction and the second direction, thereby effectively improving the installation precision of the shielding cover 130, improving the reliability and stability of the buckling between the shielding cover 130 and the fixing clamp 140, and improving the product qualification rate of the electronic equipment.

Fig. 7 is a schematic structural view of one of the guide members according to the embodiment of the present utility model, and fig. 8 is a schematic structural view of the other guide member according to the embodiment of the present utility model.

Referring to fig. 7 and 8, the guide 150 may include a first guide sidewall 151 and a second guide sidewall 152 connected and disposed at an angle, wherein the first guide sidewall 151 of one of the two guides 150 may abut on the first sidewall 131 of the shielding cover 130, and the second guide sidewall 152 may abut on the second sidewall 132 of the shielding cover 130. The first guide sidewall 151 of the other guide 150 may abut on the third sidewall 133 of the shield cover 130, and the second guide sidewall 152 may abut on the second sidewall 132 of the shield cover 130.

For example, referring to fig. 7, a first guide sidewall 151a of the guide 150a may abut on the first sidewall 131 of the shield cover 130, and a second guide sidewall 152a of the guide 150a may abut on the second sidewall 132 of the shield cover 130. Referring to fig. 8, a first guide sidewall 151b of the guide 150b may abut on the third sidewall 133 of the shield cover 130, and a second guide sidewall 152b of the guide 150b may abut on the second sidewall 132 of the shield cover 130.

The first guide sidewall 151a of the guide 150a may limit the shielding cover 130 in the second direction by abutment with the first sidewall 131 to avoid the shielding cover 130 from being offset in the second direction. The second guide sidewall 152a may limit the shielding cover 130 in the first direction through the abutment with the second sidewall 132, so as to prevent the shielding cover 130 from being offset in the first direction, thereby effectively improving the reliability and stability of the installation of the shielding cover 130.

Accordingly, the first guide sidewall 151b of the guide 150b may limit the shielding cover 130 in the second direction by the abutment with the third sidewall 133 to prevent the shielding cover 130 from being offset in the second direction. The second guiding side wall 152b can limit the shielding cover 130 in the first direction through abutting with the second side wall 132, so as to avoid the shielding cover 130 from shifting in the first direction, so that two shielding pieces can limit and guide the shielding cover 130 at the same time, and the reliability and stability of the installation of the shielding cover 130 are effectively improved.

In the embodiment of the present utility model, the angle between the first guide sidewall 151 and the second guide sidewall 152 in one of the guide members 150 may be equal to the angle between the first sidewall 131 and the second sidewall 132. The angle between the first guide sidewall 151 and the second guide sidewall 152 in the other guide 150 may be equal to the angle between the third sidewall 133 and the second sidewall 132. For example, an angle between the first guide sidewall 151a and the second guide sidewall 152a in the guide 150a and an angle between the first sidewall 131 and the second sidewall 132 may be equal, and an angle between the first guide sidewall 151b and the second guide sidewall 152b and an angle between the third sidewall 133 and the second sidewall 132 in the guide 150b may be equal.

Thus, the fitting degree between the guide member 150 and the inner wall of the shielding cover 130 can be effectively improved, the reliability and stability of the guide member 150 for guiding the shielding cover 130 can be improved, and the mounting reliability of the shielding cover 130 can be improved.

For example, in an embodiment of the present utility model, the angle between the first guide sidewall 151 and the second guide sidewall 152 and the angle between the first sidewall 131 and the second sidewall 132 in one of the guide members 150 may be 90 °. The angle between the first guide sidewall 151 and the second guide sidewall 152 and the angle between the third sidewall 133 and the second sidewall 132 in the other guide 150 may be 90 ° each. For example, the angle between the first guide sidewall 151a and the second guide sidewall 152a in the guide 150a and the angle between the first sidewall 131 and the second sidewall 132 may be 90 °, and correspondingly, the angle between the first guide sidewall 151b and the second guide sidewall 152b and the angle between the third sidewall 133 and the second sidewall 132 in the guide 150b may be 90 °

Alternatively, in some examples, the angles between the first guide sidewall 151 and the second guide sidewall 152, the angles between the first sidewall 131 and the second sidewall 132, and the angles between the third sidewall 133 and the second sidewall 132 may be other values, for example, the angles between the first guide sidewall 151 and the second guide sidewall 152, the angles between the first sidewall 131 and the second sidewall 132, and the angles between the third sidewall 133 and the second sidewall 132 may be 60 °, 120 °, etc., and specifically, the angles between the first guide sidewall 151 and the second guide sidewall 152, the angles between the first sidewall 131 and the second sidewall 132, and the angles between the third sidewall 133 and the second sidewall 132 may be selectively set according to specific application scenarios.

With continued reference to fig. 7 and 8, the guide 150 may further include a support sidewall 154, the support sidewall 154 may be disposed at an end of the first guide sidewall 151 remote from the second guide sidewall 152, and the first support sidewall 154 may be disposed at an angle with respect to the first guide sidewall 151.

Alternatively, the first support sidewall 154 may be disposed at an end of the second guide sidewall 152 remote from the first guide sidewall 151, and the first support sidewall 154 may be disposed at an angle with respect to the second guide sidewall 152. Alternatively, in some examples, the first support sidewall 154 may be disposed on both an end of the first guide sidewall 151 remote from the second guide sidewall 152 and an end of the second guide sidewall 152 remote from the first guide sidewall 151, and the first support sidewall 154 may be disposed at an angle to both the first guide sidewall 151 and the second guide sidewall 152.

For example, as shown in fig. 7, the supporting sidewall 154a in the guide 150a may be disposed at an end of the first guide sidewall 151a remote from the second guide sidewall 152a, and as shown in fig. 8, the supporting sidewall 154b in the guide 150b may be disposed at an end of the first guide sidewall 151b remote from the second guide sidewall 152 b.

The support side walls 154 can provide support to the guide 150 to prevent the guide 150 from tipping or tipping over, which can help to improve the reliability and stability of the placement of the guide 150 on the circuit board 110.

With continued reference to fig. 7 and 8, the guide 150 may further include a flange structure 155, the flange structure 155 may be located at an end of the guide 150 remote from the circuit board 110, and the flange structure 155 may be connected to the first guide sidewall 151 and the second guide sidewall 152. For example, as shown in fig. 7, the burring structure 155a in the guide 150a may be located at an end of the guide 150a remote from the circuit board 110 and connected to the first guide sidewall 151a and the second guide sidewall 152a, and as shown in fig. 8, the burring structure 155b in the guide 150b may be located at an end of the guide 150b remote from the circuit board 110 and connected to the first guide sidewall 151b and the second guide sidewall 152 b.

For example, the flange structure 155 may be formed by a bending process, for example, the first guide sidewall 151 and the second guide sidewall 152 of the guide 150 may be folded over to form the flange structure 155. The flanging structure 155 can play a role of reinforcing ribs, is helpful to improve the structural strength and rigidity of the guide member 150, and can reduce or avoid bending deformation of the guide member 150, thereby effectively improving the structural stability of the guide member 150.

With continued reference to fig. 7 and 8, the guide 150 may further include a gripping portion 156, and the gripping portion 156 may be located at an end of the guide 150 remote from the circuit board 110. For example, referring to fig. 9, the grasping portion 156a of the guide 150a may be located at an end of the guide 150a remote from the circuit board 110, and the grasping portion 156b of the guide 150b may be located at an end of the guide 150b remote from the circuit board 110.

For example, the grasping portion 156 may be formed by a bending process, and the robot arm may grasp the guide 150 by the grasping portion 156 and place the guide 150 at a corresponding position on the circuit board 110 during the installation of the guide 150. For example, the area of the grabbing portion 156 may be larger, a suction cup may be disposed on the mechanical arm, and the mechanical arm may suck the guide member 150 through the suction cup at the location of the grabbing portion 156 to drive the guide member 150 to move. Thus, the mechanical arm can conveniently grasp the guide piece 150, so that the reliability and stability of the mechanical arm grasping the guide piece 150 can be improved, and the reliability of the assembly of the guide piece 150 can be improved.

Fig. 9 is a schematic structural diagram of a pad disposed on a circuit board according to an embodiment of the present utility model, fig. 10 is an enlarged view of a region a in fig. 9, fig. 11 is an enlarged view of a region B in fig. 9, and fig. 12 is an enlarged view of a region C in fig. 9.

In an embodiment of the present utility model, the guide 150 and the fixing clip 140 may be disposed on the circuit board 110 by soldering, for example, as shown in fig. 9 and 10, a pad may be disposed on the circuit board 110, and the guide frame and the fixing clip 140 may be connected to the circuit board 110 by soldering with the pad.

For example, referring to fig. 9 and 10, a first pad group 111 and a second pad group 112 may be provided on the circuit board 110, wherein the first pad group 111 may be used for soldering with the guide 150 and the second pad group 112 may be used for soldering with the fixing clip 140. So that the guide 150 and the fixing clip 140 can be connected to the circuit board 110 by soldering with the first and second pad groups 111 and 112, respectively. For example, the solder mask layer of the circuit board 110 at the portion to be soldered with the guide 150 and the fixing clip 140 may be removed so that the copper layer under the solder mask layer may be exposed, and at this time, a tin layer may be plated on the copper layer to form a solder pad, so that the guide 150 and the fixing clip 140 may be connected with the circuit board 110 by soldering with the tin layer.

For example, as shown in connection with fig. 11 and 12, the first pad group 111 may include a first pad group 111a and a first pad group 111b, the guide 150a may be soldered with the first pad group 111a, and the guide 150b may be soldered with the first pad group 111b during the soldering of the guide 150 with the circuit board 110.

Alternatively, in some examples, the guide 150 and the fixing clip 140 may be fixed to the circuit board 110 in other manners, for example, the guide 150 and the fixing clip 140 may be provided to the circuit board 110 by a snap fit, a buckle fit, a screw fastening, or the like.

With continued reference to fig. 11 and 12, a positioning post 153 (shown in fig. 7 and 8) may be further disposed at an end of the guide 150 facing the circuit board 110, and a positioning hole 113 matching the positioning post 153 may be formed in the circuit board 110, and the positioning post 153 may be inserted into the positioning hole 113. For example, two positioning holes 113 may be formed in the circuit board 110, the two positioning holes 113 may be a positioning hole 113a and a positioning hole 113b, respectively, a positioning column 153a (see fig. 7) is disposed on the guide 150a, and a positioning column 153b (see fig. 8) is disposed on the guide 150b, wherein the positioning column 153a may be inserted into the positioning hole 113a, and the positioning column 153b may be inserted into the positioning hole 113 b.

The positioning posts 153 and the positioning holes 113 cooperate to position the guide member 150 on the circuit board 110, so as to reduce or avoid the offset of the position of the guide member 150 on the circuit board 110, and facilitate improving the accuracy of the guide member 150 on the circuit board 110. In addition, the situation that the guide member 150 is toppled or turned over in the process of being connected with the circuit board 110 can be reduced or avoided, so that the reliability and stability of the connection between the guide member 150 and the circuit board 110 can be improved, and the overall structural stability of the circuit board assembly 100 can be improved.

Wherein the number of the positioning posts 153 may be one, one positioning post 153 may be located on the first guide sidewall 151 in the guide 150, or the positioning post 153 may be located on the second guide sidewall 152. Alternatively, in some examples, the number of the positioning posts 153 may be two or more, and the positioning posts 153 may be provided on both the first guide sidewall 151 and the second guide sidewall 152. In the process of welding the guide member 150 and the circuit board 110, the positioning column 153 may be inserted into the positioning hole 113, and the positioning column 153 and the positioning hole 113 may be welded, so that the positioning column 153 and the positioning hole 113 may be fixedly connected by welding.

Referring to fig. 13, taking the cooperation between the positioning column 153a and the positioning hole 113a as an example, a gap may be provided between the inner wall of the positioning hole 113 and the outer side wall of the positioning column 153, and the minimum distance between the inner wall of the positioning hole 113 and the outer side wall of the positioning column 153 is 0.1mm to 0.15mm. For example, referring to fig. 13, the minimum distance between the inner wall of the positioning column 153 and the outer side wall of the positioning column 153 may be a distance d1 as shown in fig. 13, that is, the distance d1 may be understood as the minimum distance between the sharp corners of the positioning column 153 and the inner wall of the positioning hole 113, and the value of d1 may be in the range of 0.1mm to 0.15mm. In this way, the positioning column 153 can be conveniently inserted into the positioning hole 113, the blocking phenomenon in the process of inserting the positioning column 153 into the positioning hole 113 can be reduced or avoided, and the reliability and stability of the cooperation between the positioning column 153 and the positioning hole 113 can be improved.

For example, d1 may have a value of 0.1mm. Alternatively, for convenience of measurement, a distance between an outer sidewall of the positioning column 153 in the length direction and an inner sidewall of the positioning hole 113 may be set, for example, a distance between an outer sidewall of the positioning column 153 in the length direction and an inner sidewall of the positioning hole 113 may be d2, and a value of d2 may be 0.12mm. The occurrence of jamming between the positioning posts 153 and the inner wall of the positioning hole 113 can be reduced or avoided.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly coupled, indirectly coupled through an intermediary, in communication between two elements, or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances. The terms "first," "second," "third," "fourth," and the like, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the embodiments of the present utility model, and are not limited thereto; although embodiments of the present utility model have been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The circuit board assembly is characterized by comprising a circuit board, a memory arranged on the circuit board and a shielding cover arranged on the memory in a covering way;

2. The circuit board assembly of claim 1, wherein the shield cover comprises at least a first side wall, a second side wall, a third side wall, and a fourth side wall that are connected end to end in sequence;

the fixing clamp is arranged along the first side wall, the second side wall, the third side wall and the fourth side wall, and the first side wall, the second side wall, the third side wall and the fourth side wall are respectively clamped in the fixing clamp.

3. The circuit board assembly of claim 2, wherein the number of said guides is two, one of said guides being disposed adjacent to and abutting said first and second side walls where said first and second side walls intersect;

the other guide piece of the two guide pieces is arranged near the intersection position of the second side wall and the third side wall and is abutted against the second side wall and the third side wall.

4. The circuit board assembly of claim 3, wherein the guide member comprises first and second guide side walls connected and angularly disposed;

5. The circuit board assembly according to any one of claims 1 to 4, wherein the guide has a positioning post on an end facing the circuit board;

the circuit board is provided with a positioning hole matched with the positioning column, and the positioning column is inserted into the first positioning hole.

6. The circuit board assembly of claim 5, wherein a gap is provided between the inner wall of the locating hole and the outer side wall of the locating post, and a minimum distance between the inner wall of the locating hole and the outer side wall of the locating post is 0.1mm to 0.15mm.

7. The circuit board assembly of claim 4, wherein an angle between the first guide sidewall and the second guide sidewall in one of the guides is equal to an angle between the first sidewall and the second sidewall;

the angle between the first guide side wall and the second guide side wall in the other guide piece is equal to the angle between the third side wall and the second side wall.

8. The circuit board assembly of claim 7, wherein an angle between the first and second guide sidewalls and between the first and second sidewalls in one of the guides is 90 °;

9. The circuit board assembly of claim 4, 7 or 8, wherein the guide further comprises a support sidewall at an end of the first guide sidewall remote from the second guide sidewall, the support sidewall being disposed at an angle to the first guide sidewall;

and/or, the supporting side wall is far away from one end of the first guiding side wall, and an angle is formed between the supporting side wall and the second guiding side wall.

10. The circuit board assembly of claim 4, 7 or 8, wherein the guide further comprises a flange structure;

the flanging structure is located at one end, far away from the circuit board, of the guide piece, and is connected with the first guide side wall and the second guide side wall.

11. The circuit board assembly of claim 4, 7 or 8, wherein the guide further comprises a gripping portion at an end of the guide remote from the circuit board.

12. An electronic device comprising a circuit board assembly according to any one of claims 1 to 11.