CN219227951U

CN219227951U - Circuit board assembly and terminal equipment

Info

Publication number: CN219227951U
Application number: CN202223441115.3U
Authority: CN
Inventors: 耿官旺
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-20
Anticipated expiration: 2032-12-20

Abstract

The application discloses a circuit board assembly and terminal equipment belongs to terminal technical field. The circuit board assembly includes: the circuit board body and the shell fragment, the shell fragment includes connecting plate and elasticity portion, because connecting plate and circuit board body parallel arrangement in the shell fragment, and set up the fretwork groove that sets up adjacent with the welded zone on the circuit board body, elasticity portion in the shell fragment can be located this fretwork inslot at least partially. Therefore, the thickness of the part of the spring plate, which is positioned on the front side of the circuit board body, can be reduced, and the overall thickness of the circuit board assembly consisting of the spring plate and the circuit board body is smaller. After the circuit board assembly is integrated in the terminal equipment, the whole thickness of the terminal equipment integrated with the circuit board assembly is smaller, and the light and thin design of the terminal equipment is facilitated.

Description

Circuit board assembly and terminal equipment

Technical Field

The application relates to the technical field of terminals, in particular to a circuit board assembly and terminal equipment.

Background

With the rapid development of integrated circuits and the internet, 3C terminal devices such as computers, communication devices, consumer electronics devices, etc. are becoming popular in people's lives.

Circuit board assemblies, which are important components in terminal equipment, generally include: printed circuit board (English: printed Circuit Board; abbreviated as PCB) and shrapnel, the shrapnel is fixed on the PCB. Functional components in the terminal device can be electrically connected with the PCB through the spring plate.

However, the current circuit board assembly has a large overall thickness, resulting in a terminal device integrated with the circuit board assembly having a large overall thickness.

Disclosure of Invention

The embodiment of the application provides a circuit board assembly and terminal equipment. The problem of the great thickness of the whole of circuit board subassembly among the prior art can be solved, technical scheme is as follows:

in one aspect, a circuit board assembly is provided, the circuit board assembly comprising:

a circuit board body and a spring plate;

the front surface of the circuit board body is provided with a welding area, and the circuit board body is provided with a hollowed-out groove adjacent to the welding area;

the shrapnel comprises: the connecting plate is fixed in the welding area, and the elastic part is fixedly connected with the connecting plate, at least part of the elastic part is positioned in the hollowed-out groove, and the end part of the elastic part is a conductive contact end;

the connecting plate is arranged in parallel with the circuit board body, and the conductive contact end is positioned on one side of the back surface of the circuit board body, which is away from the front surface of the circuit board body.

Optionally, the elastic part includes: a load bearing base and an elastic arm;

the bearing base is fixedly connected with the connecting plate, and is positioned outside the hollowed-out groove;

one end of the elastic arm is fixedly connected with one side, close to the circuit board body, of the bearing base, the other end of the elastic arm is the conductive contact end, and at least part of the elastic arm is located in the hollowed-out groove.

Optionally, the elastic arm is configured to pass through the hollow groove, so that the conductive contact end is located outside the hollow groove.

Optionally, the conductive contact ends protrude from the circuit board body in a direction parallel to the circuit board body.

Optionally, the elastic arm includes: a first sub-elastic arm and a second sub-elastic arm;

the first end of the first sub elastic arm is fixedly connected with the first end of the second sub elastic arm, and the first end of the first sub elastic arm and the first end of the second sub elastic arm which are mutually connected are used for forming the conductive contact end;

the second ends of the first sub-elastic arms and the second ends of the second sub-elastic arms are respectively connected with a first side and a second side which are positioned in the bearing base and are oppositely arranged.

Optionally, the circuit board assembly further includes: and the bonding pad is positioned between the welding area of the circuit board body and the connecting plate, and the connecting plate is fixed in the welding area through the bonding pad.

Optionally, the connection board has a through hole, and the circuit board assembly further includes: and the solder paste is fixed in the through hole and is connected with the bonding pad.

In another aspect, there is provided a terminal device including:

the circuit board assembly comprises a shell and a circuit board assembly arranged in the shell, wherein the circuit board assembly is any one of the circuit board assemblies.

Optionally, the terminal device further includes: and the functional component is abutted with the elastic sheet in the circuit board assembly.

Optionally, the housing includes: the side plate and the bottom plate are connected with the side plate and are mutually perpendicular;

the functional component comprises: the antenna is fixed on the shell, and with the first conducting strip and the second conducting strip that the antenna electricity is connected, first conducting strip is fixed on the curb plate, the second conducting strip is fixed on the bottom plate, just first conducting strip with second conducting strip fixed connection, shell fragment in the circuit board subassembly simultaneously with first conducting strip with second conducting strip butt.

The beneficial effects that technical scheme that this application embodiment provided include at least:

a circuit board assembly may include: the circuit board body and the spring plate. The elastic piece can comprise a connecting plate and an elastic part, and because the connecting plate in the elastic piece is arranged in parallel with the circuit board body, and the circuit board body is provided with a hollowed-out groove adjacent to the welding area, at least part of the elastic part in the elastic piece can be positioned in the hollowed-out groove. Therefore, the thickness of the part of the spring plate, which is positioned on the front side of the circuit board body, can be reduced, and the overall thickness of the circuit board assembly consisting of the spring plate and the circuit board body is smaller. After the circuit board assembly is integrated in the terminal equipment, the whole thickness of the terminal equipment integrated with the circuit board assembly is smaller, and the light and thin design of the terminal equipment is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a front view of the circuit board assembly shown in FIG. 1;

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

fig. 4 is a schematic structural diagram of another circuit board assembly according to an embodiment of the present disclosure;

FIG. 5 is a front view of the circuit board assembly shown in FIG. 4;

fig. 6 is a schematic structural diagram of a spring plate according to an embodiment of the present application;

fig. 7 is a block diagram of a terminal device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural diagram of a circuit board assembly according to an embodiment of the present application, fig. 2 is a front view of the circuit board assembly shown in fig. 1, and fig. 3 is an exploded schematic diagram of the circuit board assembly shown in fig. 1. The circuit board assembly 000 may include: a circuit board body 100 and a spring 200.

The front side A1 of the circuit board body 100 in the circuit board assembly 000 may have a land 101, and the circuit board body 100 may have a hollowed out groove 102 disposed adjacent to the land 101 on the front side A1 of the circuit board body 100. For example, the circuit board body 100 is generally provided with a plurality of electronic devices (not shown in the figure), and the front surface A1 of the circuit board body 100 is the surface of the circuit board body 100 on which the plurality of electronic devices are disposed. For example, the circuit board body 100 may be a PCB circuit board or a flexible circuit board (english: flexible Printed Circuit; abbreviated as FPC). The embodiment of the present application is not particularly limited thereto.

The spring 200 in the circuit board assembly 000 may include: the connecting plate 201 and the elastic part 202, the connecting plate 201 can be fixedly connected with the soldering region 101 on the circuit board body 100, and the elastic part 202 is fixedly connected with the connecting plate 201. At least a portion of the elastic portion 202 may be located in the hollow groove 102 on the circuit board body 100, and an end portion of the elastic portion 202 may be the conductive contact end B1. The connection board 201 may be disposed parallel to the circuit board body 100, that is, the connection board 201 may be parallel to the front surface A1 of the circuit board body 100, and one surface of the connection board 201 is connected to the soldering area 101 on the front surface A1 of the circuit board body 100. The conductive contact B1 of the elastic portion 202 may be located on a side of the back surface of the circuit board body 100 facing away from the front surface A1 of the circuit board body 100, i.e. the elastic sheet 200 may be a reverse elastic sheet. In this application, the number of the connection plates 201 may be two, and the two connection plates 201 are fixedly connected to two side surfaces of the elastic portion 202.

In this embodiment, since the connecting plate 201 in the spring 200 is disposed parallel to the circuit board body 100, and the circuit board body 100 is provided with the hollowed-out groove 102 disposed adjacent to the soldering area 101, at least part of the elastic portion 202 in the spring 200 can be located in the hollowed-out groove 102. Therefore, the thickness of the portion of the spring piece 200 located on the front side A1 of the circuit board body 100 can be reduced, thereby making the overall thickness of the circuit board assembly 000 composed of the spring piece 200 and the circuit board body 100 smaller. After the circuit board assembly 000 is integrated in the terminal device, the whole thickness of the terminal device integrated with the circuit board assembly 000 is smaller, which is beneficial to the light and thin design of the terminal device.

In summary, the embodiment of the present application provides a circuit board assembly, which may include: the circuit board body and the spring plate. The elastic piece can comprise a connecting plate and an elastic part, and because the connecting plate in the elastic piece is arranged in parallel with the circuit board body, and the circuit board body is provided with a hollowed-out groove adjacent to the welding area, at least part of the elastic part in the elastic piece can be positioned in the hollowed-out groove. Therefore, the thickness of the part of the spring plate, which is positioned on the front side of the circuit board body, can be reduced, and the overall thickness of the circuit board assembly consisting of the spring plate and the circuit board body is smaller. After the circuit board assembly is integrated in the terminal equipment, the whole thickness of the terminal equipment integrated with the circuit board assembly is smaller, and the light and thin design of the terminal equipment is facilitated.

Optionally, referring to fig. 4, fig. 4 is a schematic structural diagram of another circuit board assembly according to an embodiment of the present application. The elastic portion 202 of the spring 200 may include: a load bearing base 2021 and a resilient arm 2022. The bearing base 2021 may be fixedly connected to the connecting plate 201, and the bearing base 2021 may be located outside the hollow groove 102 on the circuit board body 100. One end of the elastic arm 2022 may be fixedly connected to a side of the bearing base 2021 near the circuit board body 100, and the other end of the elastic arm 2022 is a conductive contact end B1. At least a portion of the elastic arm 2022 may be located in the hollow groove 102 on the circuit board body 100. In this case, the connection plate 201 and the elastic arm 2022 are fixedly connected by the bearing base 2021, respectively, and the connection plate 201 is fixed to the circuit board body 100. In this way, the stability of the connection of the elastic arm 2022 to the connection plate 201 is effectively improved. And after at least part of the elastic arms 2022 in the elastic portion 202 is placed in the hollowed-out groove 102 on the circuit board body 100, the overall thickness of the circuit board assembly 000 is smaller. In addition, since the thickness of the portion of the elastic portion 202 located on the front side A1 of the circuit board body 100 is smaller, that is, the distance between the side of the bearing base 2021 facing away from the circuit board body 100 and the front side A1 of the circuit board body 100 is smaller, the force arm between the bearing base 2021 and the conductive contact end B1 of the elastic arm 2022 is smaller. Therefore, when the conductive contact end B1 of the elastic arm 2022 is subjected to an external force, the probability of occurrence of a bad phenomenon in which the load-bearing base 2021 is deviated can be effectively reduced.

In an embodiment of the present application, please refer to fig. 4 and 5, fig. 5 is a front view of the circuit board assembly shown in fig. 4. The elastic arm 2022 in the elastic portion 202 may be used to pass through the hollow slot 102 on the circuit board body 100, so that the conductive contact end B1 on the elastic arm 2022 may be located outside the hollow slot 102 on the circuit board body 100. In this case, the elastic arm 2022 is passed through the hollow slot 102 of the circuit board body 100, so that the conductive contact end B1 of the elastic arm 2022 is located outside the hollow slot 102. In this manner, after the circuit board assembly 000 is integrated within the terminal device, the conductive contact end B1 on the spring arm 2022 is facilitated to interface with the functional components within the terminal device.

Alternatively, as shown in fig. 5, the conductive contact end B1 of the elastic arm 2022 protrudes from the circuit board body 100 in a direction parallel to the circuit board body 100. In this case, the conductive contact end B1 on the elastic arm 2022 protrudes from the circuit board body 100 in a direction parallel to the circuit board body 100, so that the conductive contact end B1 on the elastic arm 2022 is facilitated to abut against the functional parts in the terminal device while ensuring that the overall thickness of the circuit board assembly 000 is small after the circuit board assembly 000 is integrated in the terminal device.

In the embodiment of the present application, please refer to fig. 6, fig. 6 is a schematic structural diagram of a spring plate according to the embodiment of the present application. The elastic arm 2022 in the elastic portion 202 may include: a first sub-elastic arm 20221 and a second sub-elastic arm 20222. The first end of the first sub-elastic arm 20221 and the first end of the second sub-elastic arm 20222 may be fixedly connected, and the first end of the first sub-elastic arm 20221 and the first end of the second sub-elastic arm 20222 that are connected to each other may be used to form the conductive contact end B1 on the elastic arm 2022. The second ends of the first sub-elastic arms 20221 and the second ends of the second sub-elastic arms 20222 may be respectively connected to a first side and a second side disposed opposite to each other in the load-bearing base 2021. In this case, the conductive contact end B1 on the elastic arm 2022 is formed by fixedly connecting the first end of the first sub-elastic arm 20221 and the first end of the second sub-elastic arm 20222, and the second end of the first sub-elastic arm 20221 and the second end of the second sub-elastic arm 20222 are fixedly connected to the first side and the second side of the load-bearing base 2021, respectively. In this way, the elastic arm 2022 can have better elasticity, and after the elastic arm 2022 is abutted against the functional component in the terminal device, the elastic arm 2022 and the functional component in the terminal device are ensured to have better contact. Illustratively, the first and second sides of the load bearing base 2021 are aligned in directions perpendicular to the two connection plates 201.

In the present application, as shown in fig. 6, the elastic arm 2022 in the elastic portion 202 may further include: the bending arm 20223, one end of the bending arm 20223 may be fixedly connected to the second side of the bearing base 2021, and the other end of the bending arm 20223 may be fixedly connected to the second end of the second sub elastic arm 20222. In this case, the second sub elastic arms 20222 are fixedly connected to the load base 2021 by providing the bending arms 20223, respectively. In this way, a certain elastic buffer is provided between the second sub-elastic arm 20222 and the bearing base 2021, that is, the first sub-elastic arm 20221 and the second sub-elastic arm 20222 which are fixedly connected have a better elastic buffer performance with the bearing base 2021, so that better contact between the elastic arm 2022 and functional components in the terminal device is further ensured. In the actual process, the first sub-elastic arm 20221, the second sub-elastic arm 20222, and the bending arm 20223 in the spring 200 may be integrally formed, or may be separately processed and then integrally connected. The connecting plate 201 in the spring plate 200 and the bearing base 2021 may be integrally formed, or may be separately processed and then integrally connected, which is not particularly limited in the embodiment of the present application.

Optionally, as shown in fig. 4, the circuit board assembly 000 may further include: a pad 300 located between the land 101 on the circuit board body 100 and the connection plate 201. The connection plate 201 in the spring plate 200 may be fixed in the soldering region 101 on the circuit board body 100 through the soldering pad 300. In this case, the connection plate 201 in the spring 200 is fixedly connected to the land 101 on the circuit board body 100 through the pad 300. Thus, the stability of connection between the connection board 201 and the circuit board body 100 is effectively improved, and normal operation of functional components in the terminal equipment connected with the circuit board body 100 is ensured. In this application, the orthographic projection of the connection plate 201 on the plane of the pad 300 may be located in the area of the pad 300.

In the embodiment of the present application, as shown in fig. 4, the connection plate 201 in the spring plate 200 may have a through hole 2011. The circuit board assembly 000 may further include: solder paste (not shown) fixed in the through holes 2011 on the connection plate 201 may be connected to the pads 300. In this case, by opening the through hole 2011 in the connection plate 201 in the spring plate 200, solder paste is applied between the contact surfaces of the connection plate 201 and the pad 300 during the connection of the connection plate 201 and the pad 300, and the solder paste is also provided in the through hole 2011 in the connection plate 201. In this way, the welding strength between the connecting plate 201 and the bonding pad 300 can be effectively improved, and the stability of the connection between the spring plate 200 and the circuit board body 100 is further improved. For example, in an actual process, the spring plate 200 may be attached to the circuit board body 100 by using a surface mount technology (english: surface Mount Technology, abbreviated as SMT).

The embodiment of the application also provides terminal equipment which can be products or components such as smart phones, tablet computers, notebook computers, cameras and the like. Referring to fig. 7, fig. 7 is a block diagram of a terminal device according to an embodiment of the present application. The terminal device 00 may include: a housing 001, and a circuit board assembly 000 mounted within the housing 001. The circuit board assembly 000 may be any of the circuit board assemblies given above. For example, when the terminal device 00 is a smart phone, the housing 001 may be a middle frame in the smart phone. In this way, after integrating the circuit board assembly 000 in the housing 001 in the terminal device 00, the overall thickness of the terminal device 00 can be effectively reduced.

Optionally, please refer to fig. 8, fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device 00 may further include: the functional member 002 may abut against the spring piece 200 in the circuit board assembly 000. Thus, the functional component 002 can be electrically connected to the circuit board body 100 through the spring plate 200, so as to ensure the normal operation of the functional component 002.

In this embodiment, as shown in fig. 8, the functional component 002 in the terminal device may include an antenna 0021, and a first conductive sheet 0022 and a second conductive sheet 0023 electrically connected to the antenna 0021, and the first conductive sheet 0022 and the second conductive sheet 0023 are fixedly connected. Currently, in order to save the internal space of the terminal device 00, the antenna 0021 may be disposed on the inner wall of the housing 001. The housing 001 in the terminal device 00 may include: a side plate 0011, and a bottom plate 0012 connected to the side plate 0011, and the side plate 0011 and the bottom plate 0012 may be perpendicular to each other. The first conductive piece 0022 of the functional part may be fixed to the side plate 0011 of the case 001, and the second conductive piece 0023 of the functional part may be fixed to the bottom plate 0012 of the case 001. The conductive contact end B1 of the spring 200 in the circuit board assembly 000 is respectively abutted against the first conductive piece 0022 and the second conductive piece 0023. In this case, the conductive contact end B1 in the spring 200 can be simultaneously abutted against the first conductive piece 0022 and the second conductive piece 0023, that is, the contact area between the conductive contact end B1 of the spring 200 and the conductive piece in the functional component is effectively increased, the reliability of the electrical connection between the spring 200 and the antenna 0021 is ensured, and the use area of the conductive piece is saved. For example, the first conductive sheet 0022 and the second conductive sheet 0023 may be conductive copper foil, or other structures with conductive properties, which are not specifically limited in the embodiments of the present application.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the utility model, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the utility model.

Claims

1. A circuit board assembly, comprising: a circuit board body (100) and a spring sheet (200);

the front surface (A1) of the circuit board body (100) is provided with a welding area (101), and the circuit board body (100) is provided with a hollowed-out groove (102) adjacent to the welding area (101);

the spring piece (200) comprises: the connecting plate (201) is fixed in the welding area (101), and the elastic part (202) is fixedly connected with the connecting plate (201), at least part of the elastic part (202) is positioned in the hollowed-out groove (102), and the end part of the elastic part (202) is a conductive contact end (B1);

the connecting plate (201) is arranged in parallel with the circuit board body (100), and the conductive contact end (B1) is located at one side, away from the front side (A1) of the circuit board body (100), of the back side of the circuit board body (100).

2. The circuit board assembly according to claim 1, wherein the resilient portion (202) comprises: a load-bearing base (2021) and an elastic arm (2022);

the bearing base (2021) is fixedly connected with the connecting plate (201), and the bearing base (2021) is located outside the hollowed-out groove (102);

one end of the elastic arm (2022) is fixedly connected with one side, close to the circuit board body, of the bearing base (2021), the other end of the elastic arm (2022) is the conductive contact end (B1), and at least part of the elastic arm (2022) is located in the hollowed-out groove (102).

3. The circuit board assembly according to claim 2, wherein the resilient arm (2022) is adapted to pass through the hollowed out groove (102) such that the conductive contact end (B1) is located outside the hollowed out groove (102).

4. A circuit board assembly according to claim 3, wherein the conductive contact end (B1) protrudes from the circuit board body (100) in a direction parallel to the circuit board body (100).

5. The circuit board assembly according to claim 2, wherein the resilient arm (2022) comprises: a first sub-elastic arm (20221) and a second sub-elastic arm (20222);

wherein a first end of the first sub-elastic arm (20221) is fixedly connected with a first end of the second sub-elastic arm (20222), and the first end of the first sub-elastic arm (20221) and the first end of the second sub-elastic arm (20222) which are connected with each other are used for forming the conductive contact end (B1);

the second ends of the first sub-elastic arms (20221) and the second ends of the second sub-elastic arms (20222) are respectively connected to first and second sides disposed opposite to each other at the load-bearing base (2021).

6. The circuit board assembly of any one of claims 1 to 5, further comprising: and a bonding pad (300) positioned between the bonding area (101) of the circuit board body (100) and the connecting plate (201), wherein the connecting plate (201) is fixed in the bonding area (101) through the bonding pad (300).

7. The circuit board assembly according to claim 6, wherein the connection board (201) has a through hole (2011), the circuit board assembly further comprising: and the solder paste is fixed in the through hole (2011) and is connected with the bonding pad (300).

8. A terminal device, comprising: a housing (001), and a circuit board assembly (000) mounted within the housing (001), the circuit board assembly (000) being as claimed in any one of the preceding claims 1 to 7.

9. The terminal device according to claim 8, characterized in that the terminal device further comprises: and a functional component (002), wherein the functional component (002) is in contact with the spring sheet (200) in the circuit board assembly (000).

10. The terminal device according to claim 9, wherein the housing (001) comprises: a side plate (0011) and a bottom plate (0012) connected to the side plate (0011), wherein the side plate (0011) and the bottom plate (0012) are perpendicular to each other;

the functional component (002) includes: antenna (0021) fixed on casing (001), and with first conducting strip (0022) and second conducting strip (0023) that antenna (0021) electricity is connected, first conducting strip (0022) are fixed on curb plate (0011), second conducting strip (0023) are fixed on bottom plate (0012), just first conducting strip (0022) with second conducting strip (0023) fixed connection, shell fragment (200) in circuit board subassembly (000) simultaneously with first conducting strip (0022) with second conducting strip (0023) butt.