CN219876742U - Shielding piece, circuit board assembly and electronic equipment - Google Patents

Abstract

The embodiment of the utility model provides a shielding piece, a circuit board assembly and electronic equipment. The shield body has a top wall opposite to the opening, a portion of the top wall being recessed toward the opening side and forming a partition wall. The dividing wall divides the cavity into at least two mutually independent shielding cavities configured to house electronic devices on the circuit board. The shielding piece provided by the utility model can meet the requirement of cavity division arrangement of electronic devices on the circuit board, and simultaneously can reduce the manufacturing cost of electronic equipment and reduce the occupied board space of the shielding piece on the circuit board.

Description

Shielding piece, circuit board assembly and electronic equipment

Technical Field

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

Background

At present, electronic devices such as mobile phones, tablets, notebook computers and the like play a vital role in daily life and work of people.

Taking a mobile phone as an example, a large number of electronic devices are carried on a circuit board, and play an important role in electronic equipment. These electronic devices on the circuit board may include some wireless communication modules, power modules, audio devices, electronic devices with large currents, and the like. Currently, in the related art, on the layout of a circuit board, a wireless communication module is usually disposed in one separate shielding member, and a power module, an audio device, an electronic device with a large current are disposed in another separate shielding member, so that the wireless communication module, the power module, the audio device, the electronic device with a large current, etc. are disposed in separate cavities, thereby ensuring the receiving sensitivity. However, such an arrangement in the related art may result in a larger number of shields on the circuit board, which may result in higher manufacturing costs of the electronic device.

How to reduce the manufacturing cost of electronic equipment while realizing the split-cavity arrangement of a wireless communication module, a power module, an audio device, an electronic device with large current, and the like has become a technical problem to be solved.

Disclosure of Invention

The utility model provides a shielding piece, a circuit board assembly and electronic equipment, which can reduce the manufacturing cost of the electronic equipment and reduce the occupied space of the shielding piece on a circuit board while meeting the requirement of the cavity arrangement of electronic devices on the circuit board.

A first aspect of an embodiment of the present utility model provides a shield comprising a shield body configured to be secured to a circuit board, the shield body having a cavity with an opening at one end;

the shield body has a top wall opposite the opening, a portion of the top wall being recessed toward the opening and forming a dividing wall that divides the cavity into at least two mutually independent shield cavities configured to house electronic devices on the circuit board.

According to the utility model, through the arrangement of the partition walls in the shielding main body, the electronic devices which are mutually interfered on the circuit board can be covered in different shielding cavities when the shielding main body is fixed on the circuit board, so that the arrangement of the electronic devices which are mutually interfered on the circuit board can be realized through one shielding piece (one material) on the basis of not affecting the layout of the electronic devices on the circuit board. And through the setting of division wall, not only can reduce the quantity of shielding piece on the circuit board to reduce the incoming material cost and the equipment cost of shielding piece, can also reduce the occupation board space of shielding piece on the circuit board, be favorable to the compact overall arrangement of electronic device on the circuit board.

In some alternative embodiments, the partition wall is integrally connected with the top wall, so that the partition wall does not need to be assembled on the top wall while the connection strength of the partition wall and the top wall is enhanced, and the manufacturing cost of the electronic device can be further reduced.

In some alternative embodiments, the dividing wall extends to opposite sides of the cavity and forms a recess through opposite sides of the shield body on a side of the top wall facing away from the opening so as to divide the interior space of the cavity by the dividing wall to form the shield cavity.

In some alternative embodiments, the partition wall includes two partition sections, the two partition sections respectively correspond to opposite side groove walls of the groove, and the partition sections are connected with the inner walls of the cavity to divide the cavity into shielding cavities, so that the connection of the partition wall and the top wall through the partition sections can be realized, and meanwhile, electronic devices contained in the adjacent two shielding cavities can be blocked.

In some alternative embodiments, the partition wall further includes a connection section connected between ends of the two partition sections and corresponding to a groove bottom of the groove, so that the connection section and the partition wall can be fixed on the circuit board through the connection section while enclosing the groove recessed toward the opening side together on the shield body.

In some alternative embodiments, the groove width is smaller on the side of the groove adjacent to the connection section than on the side of the groove remote from the connection section, to facilitate drawing during processing of the shield.

In some alternative embodiments, the separation section is obliquely arranged between the connection section and the top wall, so that the groove forms a flaring structure which is expanded towards the side far away from the connection section, and the space occupied by the shielding piece on the circuit board can be reduced when the shielding piece is pulled out during processing.

In some alternative embodiments, the width of the connection section is greater than or equal to 0.4mm, so that the connection section has a certain width to ensure the fixing effect of the partition wall on the circuit board while making the board space of the shield on the circuit board smaller.

In some alternative embodiments, the shield further includes a connecting skirt provided around a peripheral edge of the shield body and configured to fix the shield body to the circuit board so as to enhance fixing effect of the shield body to the circuit board by the connecting skirt;

the two ends of the partition wall extend to opposite sides of the top wall and are connected with the connecting skirt so that the partition wall can extend to opposite sides of the cavity and grooves penetrating through opposite sides of the shielding body are formed in one side of the top wall facing away from the opening.

In some alternative embodiments, the connecting section of the partition wall has an end surface facing away from the top wall, and the difference in height between the end surface and the end surface of the connecting skirt is greater than 0mm and less than or equal to 0.2mm, so as to avoid local area warping of the connecting skirt when the connecting section is fixed on the circuit board, and ensure the connection effect of the connecting skirt and the circuit board.

In some alternative embodiments, the partition wall is located at one side or the middle of the shielding main body, so that the position of the partition wall on the shielding main body can be flexibly set according to the size and the number of electronic devices required to be arranged in the separated cavities on the circuit board, and the accommodating space of the shielding cavity can be adjusted.

A second aspect of an embodiment of the present utility model provides a circuit board assembly comprising a circuit board and a shield as defined in any one of the preceding claims, the shield being secured to the circuit board, the circuit board having a plurality of electronic devices thereon, the plurality of electronic devices including first and second electronic devices that interfere with each other, the first electronic device being located in one of the shield cavities and the second electronic device being located in the other of the shield cavities.

Thus, through the arrangement of the shielding piece, the cavity-separating arrangement of the first electronic device and the second electronic device can be realized, and mutual interference between the first electronic device and the second electronic device is prevented.

In some alternative embodiments, the connecting skirt and the connecting section in the shield are both sealingly connected to the circuit board so as to form two mutually independent and closed shield cavities within the shield body.

In some alternative embodiments, the end face of the connection section is spaced from the board face of the circuit board to provide a sealed connection between the connection section and the circuit board.

A third aspect of an embodiment of the utility model provides an electronic device comprising a housing and a circuit board assembly as defined in any one of the preceding claims, the circuit board assembly being located within the housing.

Through the arrangement of the shielding piece in the circuit board assembly, the first electronic device and the second electronic device in the circuit board assembly are prevented from interfering with each other, meanwhile, the compact layout of the circuit board assembly can be realized, and the manufacturing cost of the electronic equipment is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present utility model;

fig. 2 is an exploded view of an electronic device according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a shield provided in the related art on a circuit board;

FIG. 4 is an internal schematic view of the shield of FIG. 3;

fig. 5 is an enlarged view of a portion a in fig. 4;

fig. 6 is a schematic structural diagram of a shielding member according to an embodiment of the present utility model;

FIG. 7 is a cross-sectional view of a shield according to an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of another shield provided in an embodiment of the present utility model;

FIG. 9 is a schematic view of a shield member according to another related art;

fig. 10 is a schematic view of the shield of fig. 9 from another perspective;

fig. 11 is an assembled cross-sectional view of the shield of fig. 9 on a circuit board;

FIG. 12 is a second cross-sectional view of the shield of FIG. 7;

fig. 13 is an enlarged view of fig. 12 at B;

fig. 14 is an exploded view of a circuit board assembly according to an embodiment of the present utility model;

fig. 15 is a schematic structural diagram of a circuit board assembly according to an embodiment of the present utility model.

Reference numerals illustrate:

100-an electronic device; 1-a housing; 11-a middle frame; 111-frames; 112-a middle plate; 12-a rear cover; 2-a display screen; 3-a circuit board; 31-an electronic device; 311-a first electronic device; 312-a second electronic device;

4-shielding; 41-a shield body; 411-top wall; 412-dividing walls; 4121-a separator segment; 4122-a connecting segment; 413-grooves; 414-sidewalls; 415-shielded cavity; 416-opening; 42-connecting skirts; 43-barrier.

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 embodiment of the utility model provides an electronic device, which may include, but is not limited to, a fixed terminal or a mobile terminal with a circuit board, such as a mobile phone, a tablet computer (i.e., pad), a notebook computer, a Virtual Reality (VR) device, a personal computer (personal computer, PC), an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a handheld computer, an intelligent wearable device, and the like.

Fig. 1 illustrates a schematic structure of an electronic device 100, and fig. 2 illustrates a schematic disassembly of the electronic device 100.

Referring to fig. 1 and 2, an electronic device 100 provided in an embodiment of the present utility model may include a housing 1, where the housing 1 includes a middle frame 11 and a rear cover 12, and the rear cover 12 is connected to one side of the middle frame 11 and provides a structural frame with the middle frame 11 for the electronic device 100. Referring to the figures, in some embodiments, middle frame 11 includes a middle plate 112 and a rim 111 connected to each other, and rim 111 is provided around a peripheral edge of middle plate 112 and forms middle frame 11 together with middle plate 112.

In some embodiments, when the electronic device 100 has a display function (for example, the electronic device 100 is a mobile phone), the electronic device 100 further includes a display screen 2, as shown in fig. 2, the display screen 2 may be mounted on a side opposite to the rear cover 12 on the middle frame 11, so as to implement the display function of the electronic device 100.

It should be noted that, in fig. 1 and fig. 2, one middle frame 11 is illustrated, in some embodiments, the number of middle frames 11 may be two, and the two middle frames 11 may be rotatably connected and carry the foldable display screen 2, so as to implement folding and flattening of the electronic device 100 through the relative rotation of the two middle frames 11, so that the user can conveniently carry the electronic device 100 while meeting the requirement of people for a large display area of the electronic device 100.

The structure of the electronic device 100 of the present utility model will be further described below by taking a middle frame 11 as an example.

The display 2 may enclose a housing space (not illustrated in the drawing) of the electronic device 100 together with the middle frame 11 and the rear cover 12. The accommodating space may be used to accommodate the circuit board 3 of the electronic device 100. The circuit board 3 may be understood as a motherboard in the electronic device 100 (such as a mobile phone). The circuit board 3 typically carries electronic devices 31 such as a System On a Chip (SoC), a System Chip, a memory module, a communication module, and a Power Amplifier (PA).

The SoC may include one or more processing units, such as: the SoC may include an application processor (application processor, AP), a modem processor, a graphics processor (Graphics Processingunit, GPU), an image signal processor (Image Signal Processor, ISP), a digital signal processor (Digital Signal Processor, DSP), a baseband processor, and/or a Neural network processor (Neural-netZork Processing Unit, NPU), etc.

The memory module may be electrically connected to the system chip to facilitate storage of data. The memory modules may include, but are not limited to, double Data Rate (DDR) memory, universal flash memory (Universal Flash Storage, USF) devices.

The communication module may include a wireless communication module electrically connected to the system chip, and the wireless communication module may include a wireless fidelity (Wireless Fidelity, wi-Fi) module, a Bluetooth (BT) module, a near field communication (Near Field Communication, NFC) module, and the like. An antenna in the electronic device 100 may be coupled to a wireless communication module that receives electromagnetic waves via the antenna and transmits electromagnetic wave signals to a processor after processing. The wireless communication module may also receive signals to be transmitted from the processor, process them, and radiate the processed signals via the antenna so that the electronic device 100 may communicate with other devices through wireless communication technology.

The power amplifier is one of the radio frequency chips and is used for signal amplification during communication of the electronic device 100.

In some embodiments, the circuit board 3 may also carry sensor modules thereon. The sensor module may include a pressure sensor, a gyroscope sensor, a barometric sensor, a distance sensor, a proximity sensor, a touch sensor, and the like. Each sensor module may be electrically connected to the system chip so that the electronic device 100 has the function of each sensor module. For example, the touch sensor may be electrically connected to the processor to implement the touch functionality of the electronic device 100.

The display screen 2 may be electrically connected to a system chip on the circuit board 3 to enable the electronic device 100 to perform display or operation functions on the display screen 2.

In some embodiments, the circuit board 3 may further carry electronic devices 31 such as a camera module, a power module, and an audio device, so as to accommodate the camera module, the power module, and the audio device in the accommodating space. The camera module may be electrically connected to the circuit board 3, so that when a user inputs a photographing instruction, the camera module can be controlled to photograph a target object through the circuit board 3, thereby realizing a photographing function of the electronic device 100.

The power module may include a Double Data Rate (DDR) power device, a power management module, or other electronic device 31 having a power function. The power management module may receive input from the battery and may provide power to the display 2, processor, memory, camera module, etc. In some embodiments, the power management module may also be used to monitor battery capacity, battery cycle times, battery health (leakage, impedance), and the like.

The audio device generally refers to an electronic device 31 for converting digital audio information into an analog audio signal output, as well as for converting an analog audio input into a digital audio signal. The audio device may include, but is not limited to, an electronic device 31 such as a speaker, receiver, microphone, etc.

Speakers, also known as "horns," are used to convert audio electrical signals into sound signals. The electronic device 100, such as a cell phone, may listen to music through a speaker or to a hands-free conversation. A receiver, also called an "earpiece", is used to convert an audio electrical signal into a sound signal. When the electronic device 100 (e.g., a cell phone) receives a call or voice message, the phone may be received by placing the receiver in close proximity to the human ear. Microphones, also known as "microphones" and "microphones", are used to convert sound signals into electrical signals. When making a call or transmitting voice information, a user can sound near the microphone through the mouth, inputting a sound signal to the microphone. The electronic device 100 may be provided with at least one microphone. In other embodiments, the electronic device 100 may be provided with two microphones, such that the microphones may implement a noise reduction function in addition to collecting sound signals.

Alternatively, in some embodiments, the electronic device 31 such as a compass, a vibration motor, etc. may be further accommodated in the accommodating space. In the present utility model, the number and kind of the electronic devices 31 accommodated in the accommodation space are not further limited.

Some electronic devices carried on the circuit board will interfere with each other to affect the normal operation of each of them, so on the layout of the circuit board 3, it is necessary to design the electronic devices interfering with each other in a cavity-dividing manner. For example, the Wi-Fi module may interfere with some of the electronics 31 on the circuit board 3, and the electronics 31 that can interfere with the Wi-Fi module include, but are not limited to, DDR power devices, audio devices, memory modules. For convenience of description, the electronic device 31 having an interference effect on the Wi-Fi module, such as a DDR power device, an audio device, a memory module, etc., will be collectively referred to as an interference device of the Wi-Fi module.

On the layout of the circuit board 3, the Wi-Fi module and the interference device of the Wi-Fi module are required to be designed in a cavity-separating mode on the circuit board 3, so that the Wi-Fi module and the interference device of the Wi-Fi module are isolated from each other, mutual interference of the Wi-Fi module and the interference device of the Wi-Fi module is avoided, and the receiving sensitivity of the Wi-Fi module and normal operation of the interference device of the Wi-Fi module are ensured.

Fig. 3 is a schematic view showing a structure of a shield 4a provided in the related art one on a circuit board 3, and fig. 4 is a schematic view showing an inside of the shield 4a in fig. 3.

For this purpose, referring to fig. 3 and 4, in the related art, a shield 4a is separately designed on the Wi-Fi module on the circuit board 3, and the shield 4a is covered on the Wi-Fi module (not shown in the drawing). The interfering devices (not illustrated in the figures) of the Wi-Fi module are then housed inside the further at least one shield 4 a. Therefore, through the shielding of at least two shielding pieces 4a, the interference between the Wi-Fi module and the interference device of the Wi-Fi module can be avoided, and the receiving sensitivity of the Wi-Fi module and the normal operation of the interference device of the Wi-Fi module are ensured. Each shield 4a is fixed to the circuit board 3 by a connecting skirt 42 a.

However, such an arrangement in the related art one results in a larger number of the shields 4a on the circuit board 3. Since one shielding member 4a is used as a single material, the shielding members 4a on the circuit board 3 are all used as a single material to be individually packaged, shipped and assembled to the circuit board 3 by the surface assembly technology (Surface Mounted Technology, SMT), so that the material feeding cost and the assembly cost of the shielding members 4a are high, and the manufacturing cost of the electronic device 100 is high.

Fig. 5 is an enlarged view of the portion a in fig. 4. Referring to fig. 5, in consideration of machining tolerance of the shielding members 4a, assembly tolerance on the circuit board 3, etc., a certain safety distance L is left between the connecting skirts 42a of the adjacent two shielding members 4a after the shielding members 4a are assembled on the circuit board 3 ₀ For passing through the safety distance L ₀ Machining tolerances and assembly tolerances of the shield 4a are eliminated, and assembly variations of the shield 4a on the circuit board 3 are reduced. To ensure the fixing effect of the shielding members 4a on the circuit board 3, the connecting skirt 42a also needs to satisfy a certain width requirement, in which case the gap L between the side walls of the adjacent two shielding members 4a adjacent to the side of the circuit board 3 ₁ Larger. Gap L ₁ Comprising a safety distance L ₀ And the width of the adjacent two connecting skirts 42 a. For example, gap L ₁ Typically 0.9mm, with a limit size of 0.8mm, which results in a large board space for the shield 4a on the circuit board 3, which is detrimental to a compact layout of the electronic device 31 on the circuit board 3.

The space occupied by the board is understood to be the space occupied by the board surface of the circuit board 3 when the shield 4a is connected to the circuit board 3.

Therefore, the embodiment of the utility model provides the shielding piece, which can be applied to the circuit board, and at least two shielding cavities can be formed in the shielding piece by improving the structure of the shielding piece, so that when at least electronic devices on the circuit board are accommodated in at least two shielding cavities, the electronic devices in different shielding pieces can be prevented from interfering with each other, the manufacturing cost of the electronic equipment can be reduced, the occupied space of the shielding piece on the circuit board is reduced, and the compact layout of the electronic devices on the circuit board is facilitated.

The structure of the shield 4 of the present utility model will be further elucidated with reference to the drawings and embodiments.

Fig. 6 illustrates a schematic structure of a shield 4, and fig. 7 illustrates a cross-sectional view of the shield 4 so as to facilitate observation of the structure of the shield 4.

Referring to fig. 6 and 7, the shield 4 includes a shield body 41, and the shield body 41 is configured to be fixed on the circuit board 3 to achieve fixation of the shield body 41 and the shield 4 on the circuit board 3. The shield body 41 has a cavity (not shown) with an opening 416 at one end, and the shield body 41 has a top wall 411 opposite the opening 416.

Referring to fig. 7, a portion of the top wall 411 is recessed toward the opening 416 side, and forms a partition wall 412, the partition wall 412 dividing the cavity into at least two shielding cavities 415 independent of each other, the shielding cavities 415 being configured to house the electronic components 31 (not shown in the drawing) on the circuit board 3.

Thus, through the arrangement of the partition wall 412 in the shielding main body 41, when the shielding main body 41 is fixed on the circuit board 3, the electronic devices 31 interfering with each other on the circuit board 3 can be covered in different shielding cavities 415, so that the cavity-separating arrangement of the electronic devices 31 interfering with each other on the circuit board 3 can be realized while the layout of the electronic devices 31 on the circuit board 3 is not influenced, the mutual interference of the electronic devices 31 in different shielding cavities 415 is avoided, and the normal operation of the electronic devices 31 in the shielding cavities 415 is ensured.

The electronic device 31 covered by the shielding member 4 may include, but is not limited to, a Wi-Fi module and an interference device of the Wi-Fi module. In some embodiments, the electronic device 31 covered by the shielding member 4 may be other electronic devices 31 interfering with each other on the circuit board 3. For example, the electronic device 31 covered by the shielding member 4 may also be an electronic device 31 adjacent to the compass on the circuit board 3.

Taking the Wi-Fi module as an example, the Wi-Fi module may be separately accommodated in one shielding cavity 415, and at least one of the interference devices of the Wi-Fi module may be accommodated in the other shielding cavity 415, so as to realize the cavity division setting of the Wi-Fi module and the interference devices of the Wi-Fi module.

Alternatively, in some embodiments, the electronic device 31 on the circuit board 3 that does not interfere with the Wi-Fi module may be housed in the same shielded cavity 415 as the Wi-Fi module. In the present utility model, the number and kind of the electronic devices 31 in the shield cavity 415 are not further limited.

Compared with the two shields 4a in the related art one, due to the shielding of the present utility modelThe cavities 415 are partitioned by the partition walls 412 in the shielding member 4, so that the utility model can realize the cavity arrangement of the electronic devices 31 interfering with each other on the circuit board 3 through one shielding member 4 (one material), and not only can reduce the number of the shielding members 4 assembled on the circuit board 3, thereby reducing the material cost and the assembly cost of the shielding members 4, but also can reduce the manufacturing cost of the electronic device 100 when the manufacturing cost of other structures of the electronic device 100 is unchanged, and the safety distance L is not required to be arranged ₀ The board space occupied by the shield 4 on the circuit board 3 can be reduced, facilitating a compact layout of the electronic device 31 on the circuit board 3.

The shielding body 41 includes a side wall 414 in addition to the top wall 411, and the side wall 414 is disposed around the peripheral edge of the top wall 411 and encloses the shielding body 41 with the top wall 411.

Wherein the construction of the shield 4 comprising two shield cavities 415 is illustrated in fig. 6 and 7.

Fig. 8 illustrates a cross-sectional view of another shield 4. Referring to fig. 8, in some embodiments, the shield cavity 415 in the shield 4 may also be three or more. Taking the shielding cavity 415 as three examples, the top wall 411 having two parts on the shielding body 41 is recessed toward the opening 416 side to form two partition walls 412, and the cavity of the shielding body 41 can be divided into three shielding cavities 415 by the two partition walls 412. In the present utility model, the number of the shielding cavities 415 is not further limited.

The structure of the shield 4 of the present utility model will be further described below by taking two shield cavities 415 as an example.

Fig. 9 and 10 are schematic views showing the structure of one shield 4b provided in the second related art at different viewing angles, respectively, and fig. 10 is a sectional view showing the assembly of the shield 4b of fig. 8 on the circuit board 3 so as to understand the structure of the shield 4b.

In order to realize the split-cavity arrangement of the Wi-Fi module and the interference device of the Wi-Fi module, a shielding member 4b is provided in the related art. The structure of the shield 4b is shown with reference to fig. 9 and 10.

Referring to fig. 9 in combination with fig. 10, the shield 4b includes a shield body 41a and a barrier 43, and the barrier 43 may include, but is not limited to, a barrier strip. The barrier 43 is located inside the shield body 41a and welded to the inner surface of the top wall of the shield body 41a by jig assembly, an electric welding process. When the Wi-Fi module is located at a side in the shielding body 41a and the interference device of the Wi-Fi module is located at a side far away from the Wi-Fi module in the shielding body 41a, the blocking member 43 may be located between the Wi-Fi module and the interference device of the Wi-Fi module and serve as a shielding retaining wall in the shielding body 41a to separate the Wi-Fi module and the interference device of the Wi-Fi module.

Through the setting of the blocking piece 43, although the setting of the Wi-Fi module and the cavity of the interference device of the Wi-Fi module can be realized, the number of the shielding pieces 4b on the circuit board 3 is reduced, but the number of the shielding pieces 4b is increased, and the blocking piece 43 needs to be connected to the shielding main body 41a through jig assembly and electric welding process, so that the assembly of the blocking piece 43 in the shielding main body 41a is complicated, and the manufacturing cost of the electronic device 100 is increased undoubtedly.

Compared with the second prior art, the partition wall 412 of the present utility model is formed by recessing a portion of the top wall 411 toward the opening 416, so that the number of materials of the shielding member 4 can be reduced by the arrangement of the partition wall 412, and the manufacturing process of the shielding member 4 can be simplified without welding to the shielding body 41 by jig assembly or electric welding, thereby reducing the manufacturing cost of the electronic device 100.

Fig. 12 illustrates a cross-sectional view of the shield 4 of fig. 7 from another perspective. As shown in fig. 12, the partition wall 412 is integrally connected with the top wall 411 so as to realize the connection of the partition wall 412 with the top wall 411, and the connection strength of the partition wall 412 with the top wall 411 is enhanced, so that the partition wall 412 does not need to be assembled on the top wall 411, and the manufacturing cost of the electronic device 100 can be further reduced.

During the processing of the shielding member 4, the partition wall 412 may be integrally formed by drawing and pressing. The drawing die has a protrusion adapted to the shape of the outer surface of the partition wall 412 at a position corresponding to the partition wall 412, so that after the drawing die (drawing die) is drawn, the partition wall 412 recessed toward the inside of the cavity with respect to the top wall 411 can be formed on the top wall of the shield main body 41.

The partition wall 412 may be located at one side or the middle of the shielding main body 41, so that the position of the partition wall 412 on the shielding main body 41 can be flexibly set according to the size and the number of the electronic devices 31 needing to be arranged in the cavity on the circuit board 3, so as to adjust the accommodating space of the shielding cavity 415, so that the electronic devices 31 needing to be arranged in the cavity on the circuit board 3 in the same area can be accommodated in the shielding cavity 415 of the shielding member 4. When the partition wall 412 is located at one side of the shield body 41, the structure of the shield 4 may refer to the structure in fig. 11, and the position of the partition wall 412 on the shield body 41 is not further limited.

Referring to fig. 12, the partition wall 412 extends to opposite sides of the cavity, and grooves 413 penetrating opposite sides of the shielding body 41 are formed on a side of the top wall 411 facing away from the opening 416, so that the partition wall 412 can be recessed toward the opening 416 with respect to the top wall 411, and the inner space of the cavity is partitioned by the partition wall 412, so that the shielding cavity 415 is formed, and meanwhile, the electronic devices 31 contained in the two adjacent shielding cavities 415 can be better blocked by the partition wall 412, so that the mutual interference of the electronic devices 31 contained in the two adjacent shielding cavities 415 can be avoided.

The partition wall 412 may include two partition sections 4121, the two partition sections 4121 corresponding to opposite side groove walls of the groove 413, respectively, and the partition sections 4121 are connected with an inner wall of the cavity to partition the cavity into the shielding cavity 415. This allows the separation wall 412 to be connected to the top wall 411 by the separation section 4121, while also blocking the electronic components 31 contained in the adjacent two shield cavities 415. Wherein two partition walls 412 may form a notch of the groove 413 toward one end of the top wall 411.

The partition wall 412 may include a connection section 4122, the connection section 4122 being connected between the ends of the two partition sections 4121 and corresponding to the groove bottom of the groove 413, so that the connection section 4122 and the partition wall 412 can be fixed to the circuit board 3 by the connection section 4122 while enclosing the groove 413 recessed toward the opening 416 side together on the shield main body 41, so as to form the sealed shield cavity 415. Wherein the partition 4121 is smoothly connected to the top wall 411.

Fig. 13 illustrates an enlarged view of fig. 12 at B to better understand the structure of the partition wall 412.

Referring to fig. 13, in some embodiments, the groove 413 has a smaller groove width on the side adjacent to the connecting section 4122 than on the side of the groove 413 remote from the connecting section 4122, such that the groove 413 has a larger dimension at the end adjacent to the slot, which can facilitate drawing of the shield 4 during processing of the shield 4.

The drawing die generally refers to the drawing of the drawing die during the processing of the shield 4.

Alternatively, in some embodiments, the groove width of the side of the groove 413 adjacent the connecting segment 4122 may be equal to the groove width of the side of the groove 413 remote from the connecting segment 4122 without excessive demands on the drawing difficulty.

The structure of the shield 4 of the present utility model will be further described by taking the example that the groove width of the side of the groove 413 adjacent to the connection section 4122 is smaller than the groove width of the side of the groove 413 remote from the connection section 4122.

Referring to fig. 13, in some embodiments, a divider 4121 may be provided obliquely between the connecting section 4122 and the top wall 411 such that the groove 413 forms a flared structure that expands toward a side away from the connecting section 4122. In the present utility model, the inclination angle of the partition 4121 is not further limited. In some embodiments, the included angle a between the separation section 4121 and the groove depth direction of the groove 413 may be greater than 0 degrees and less than 10 degrees. For example, the included angle a may be 2 degrees, 3 degrees, 4 degrees, 5 degrees, etc. The groove depth direction of the groove 413 can be seen in the Y direction in fig. 13.

Due to the arrangement of the outward expansion structure, the groove width of the groove 413 in the direction from the groove bottom to the groove opening is gradually increased, so that the space occupied by the connecting section 4122 on the circuit board 3 is not influenced while the mold is pulled out during processing of the shielding piece 4, and the space occupied by the shielding piece 4 on the circuit board 3 can be reduced compared with the prior art.

The connection section 4122 may have a planar structure, so that the connection section 4122 has a larger contact area with the circuit board 3, so as to ensure the fixing effect of the partition 412 on the circuit board 3.

The connection section 4122 may be fixed to the circuit board 3 by soldering, bonding, or the like. The welding may be assembled using SMT. To ensure the fixing effect of the connection section 4122 on the circuit board 3, the connection section 4122 is generally fixed to the circuit board 3 by soldering. When the shield body 41 is fixed to the circuit board 3, the two separate sections 4121 separate the inner spaces of the cells, so that two separate and airtight shield cavities 415 can be formed in the shield body 41.

Referring to FIG. 13, the width L of the connecting segment 4122 ₂ May be greater than or equal to 0.4mm. That is, the groove 413 has a groove width at the groove bottom of 0.4mm or more. Wherein the width L of the connecting section 4122 ₂ May be 0.45mm, 0.48mm, 0.5mm, etc. In this way, compared with the two shielding pieces 4a in the first prior art, the present utility model realizes the cavity division arrangement of the Wi-Fi module and the interference device of the Wi-Fi module through one shielding piece 4, so that the connecting section 4122 has a certain width, thereby ensuring the fixing effect of the partition wall 412 on the circuit board 3 without setting the safety distance L ₀ So that the shield 4 occupies less board space on the circuit board 3.

It should be noted that in some embodiments, the partition wall 412 is the same as the top wall 411. Alternatively, in other embodiments, the thickness of the partition wall 412 at the connecting section 4122 may also be greater than the thickness of the top wall 411, as processing conditions allow, to facilitate reducing the recess depth of the partition wall 412. In the present utility model, the thicknesses of the partition wall 412 and the top wall 411 are not further limited.

The structure of the shield 4 will be further described below taking the same thickness of the partition wall 412 and the top wall 411 as an example.

In some embodiments, the end of the shield body 41 facing the circuit board 3 may be directly fixed to the circuit board 3 by soldering, bonding, or the like, so that the connection segments 4122 together achieve the fixation of the shield 4 to the circuit board 3.

Fig. 14 shows an exploded view of a circuit board assembly, and fig. 15 shows a schematic view of the circuit board assembly in order to understand the effect of assembling the shield 4 on the circuit board 3.

Referring to fig. 14 and 15, in other embodiments, the shield member 4 may further include a connecting skirt 42, the connecting skirt 42 being provided around a peripheral edge of the shield body 41 and configured to fix the shield body 41 to the circuit board 3 so that the fixing of the shield body 41 to the circuit board 3 is facilitated by the arrangement of the connecting skirt 42 while the connection area of the shield body 41 to the circuit board 3 can be increased to enhance the fixing effect of the shield body 41 to the circuit board 3.

Specifically, the connecting skirt 42 may be integrally connected to the peripheral edge of the side wall 414. The connecting skirt 42 may be fixed to the circuit board 3 by welding, bonding, or the like, as in the connecting section 4122. To ensure the fixing effect of the connecting skirt 42 to the circuit board 3, the connecting skirt 42 is generally fixed to the circuit board 3 by soldering so that two shielding cavities 415, which are independent from each other and airtight, can be formed in the shielding main body 41 under the separation action of the two separation sections 4121.

Wherein both end portions of the partition wall 412 extend to opposite sides of the top wall 411, respectively, and are connected to the connecting skirts 42, so that the partition wall 412 can extend to opposite sides of the cavity, and grooves 413 penetrating opposite sides of the shield body 41 are formed at one side of the top wall 411 facing away from the opening 416. At this time, the two ends of the partition 4121 and the connecting section 4122 extend to the opposite sides of the top wall 411 as well, and are connected to the connecting skirt 42, so that the inner space of the cavity can be effectively partitioned by the partition 4121, and two shielding cavities 415 independent of each other are formed, thereby isolating the electronic devices 31 in the two shielding cavities 415.

The connecting skirt 42 may have a planar structure located outside the cavity so that the connecting skirt 42 has a large contact area with the circuit board 3 to secure the fixing effect of the shield main body 41 on the circuit board 3.

In some embodiments, the connecting segment 4122 has an end face facing away from the top wall, a height difference h between the end face and the end face of the connecting skirt ₁ May be greater than 0mm and less than or equal to 0.2mm. For example, the height difference h ₁ May be 0.05mm or 0.1mm, etc. Thus due to the height difference h ₁ Is capable of avoiding the attachment of the connection section 4122 to the circuitWhen the board 3 is mounted, the local area of the connecting skirt 42 is tilted, so that the connecting effect between the connecting skirt 42 and the circuit board 3 is ensured.

The height difference h is ₁ The dimension of the connecting skirt 42 is smaller, so that the groove depth of the groove 413 can be made to be nearly flush with the connecting skirt 42 while ensuring the connecting effect of the connecting skirt 42 and the circuit board 3, so that the partition 4121 can effectively partition the inner space of the chamber, and plays a role in isolating the electronic device 31 in the adjacent shielding chamber 415.

Referring to fig. 14 and 15, the embodiment of the present utility model further provides a circuit board assembly including the circuit board 3 and the above shield 4, the shield 4 being fixed to the circuit board 3. As described above, the circuit board 3 has the plurality of electronic devices 31 thereon, wherein the plurality of electronic devices 31 includes the first electronic device 311 and the second electronic device 312 that interfere with each other, the first electronic device 311 is located in one of the shielding cavities 415 in the shielding 4, and the second electronic device 312 is located in the other of the shielding cavities 415 in the shielding 4, so that the cavity-dividing arrangement of the first electronic device 311 and the second electronic device 312 can be achieved by the arrangement of the shielding 4, preventing the mutual interference between the first electronic device 311 and the second electronic device 312.

In some embodiments, the first electronic device 311 may include a wireless communication module and the second electronic device 312 may include an interference module of the wireless communication module. The wireless communication module may include, but is not limited to, the Wi-Fi module described above, and the like. Taking Wi-Fi module as an example, the second electronic device 312 may include, but is not limited to, the DDR power device, audio device, memory module described above.

Alternatively, in other embodiments, the first electronic device 311 may also be a system on chip or a power amplifier as described above, and the second electronic device 312 may also be a trace of an antenna on the circuit board 3 having an interference effect on the system on chip or the power amplifier, or the like. Alternatively, in other embodiments, the first electronic device 311 and the second electronic device 312 may also be adjacent to and interfere with the electronic device 31 of the compass accessory on the circuit board 3. In the present utility model, the kinds of the first electronic device 311 and the second electronic device 312 are not further limited. By arranging the shielding piece 4 in this way, the first electronic device 311 and the second electronic device 312 can be arranged in a cavity on the circuit board 3, so that mutual interference between the first electronic device 311 and the second electronic device 312 is avoided.

It should be noted that, the structure of the shielding member 4 may be referred to the above description, and will not be further described herein.

Wherein, the connecting skirt 42 and the connecting section 4122 in the shielding member 4 are all in sealing connection with the circuit board 3, so that when the shielding member 4 is fixed on the circuit board 3 through the connecting skirt 42 and the connecting section 4122, two mutually independent and airtight shielding cavities 415 can be formed in the shielding main body 41 under the separation action of the separation wall 412. The connection skirt 42 and the connection section 4122 may be connected to the circuit board 3 by welding or bonding.

As shown in fig. 13, the end face of the connecting section 4122 has a distance h from the board face of the circuit board 3 ₂ So that a sealed connection between the connection section and the circuit board 3 is obtained. Wherein, in some embodiments, the spacing h ₂ May be greater than 0mm and less than or equal to 0.2mm.

When the connection section 4122 is hermetically connected to the circuit board 3, a connection portion (not shown) is provided between the end surface of the connection section 4122 and the board surface of the circuit board 3, and a pitch h ₂ It is also possible to equal the length of the connection portion in the Y direction (thickness of the connection portion) so that the sealing connection of the connection section 4122 with the circuit board 3 is achieved by the connection portion.

Since the connection section 4122 is generally connected to the circuit board 3 by soldering, the connection portion can be understood as a soldered portion formed of solder. In some embodiments, the spacing h ₂ But may also be greater than 0.2mm in order to accommodate thicker connections. In the present utility model, the distance between the connection section 4122 and the circuit board 3 is not further limited.

It should be noted that the circuit board assembly of the present utility model may be applied to not only the electronic device 100 described above, but also other devices, such as home appliances including a speaker. In the present utility model, the application range of the shield 4 and the circuit board assembly is not further limited.

As described above, the electronic device 100 includes the casing 1, and when the circuit board assembly is applied to the electronic device 100, the electronic device 100 may further include the circuit board assembly, where the circuit board assembly is located in the casing 1 to replace the circuit board 3 described above, so as to control the display, call, camera, and other functions of the electronic device 100, and not only avoid interference between the first electronic device 311 and the second electronic device 312 in the circuit board assembly, but also realize a compact layout of the circuit board assembly, and reduce the manufacturing cost of the electronic device 100.

It should be noted that, the structure of the housing 1 may be referred to the above description, and will not be further described herein.

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 in the description and in the claims and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Claims (15)

1. A shield comprising a shield body configured to be secured to a circuit board, the shield body having a cavity with an opening at one end;

the shield body has a top wall opposite the opening, a portion of the top wall is recessed toward one side of the opening, and forms a partition wall that separates the cavity into at least two mutually independent shield cavities configured to house electronic devices on the circuit board.

2. The shield of claim 1, wherein the divider wall is integrally connected with the top wall.

3. The shield of claim 1 wherein the divider wall extends to opposite sides of the cavity and forms a recess through opposite sides of the shield body on a side of the top wall facing away from the opening.

4. A shield according to claim 3, wherein the partition wall comprises two partition sections corresponding to opposite side walls of the recess, respectively, and the partition sections are connected with an inner wall of the cavity to partition the cavity into the shield cavity.

5. The shield of claim 4, wherein the partition wall further comprises a connecting section connected between ends of the two partition sections and corresponding to a bottom of the groove.

6. The shield of claim 5, wherein a groove width of a side of the recess adjacent the connection section is smaller than a groove width of a side of the recess remote from the connection section.

7. The shield of claim 6 wherein said divider is disposed obliquely between said connector and said top wall such that said recess forms a flared structure that diverges toward a side remote from said connector.

8. The shield of claim 5, wherein the width of the connection section is greater than or equal to 0.4mm.

9. The shield of any one of claims 1-8, further comprising a connecting skirt that is peripherally disposed to a peripheral edge of the shield body and is configured to secure the shield body to the circuit board;

the two ends of the partition wall extend to two opposite sides of the top wall respectively and are connected with the connecting skirt.

10. The shield according to claim 9, wherein the connecting section of the partition wall has an end face facing away from the top wall, a height difference between the end face and the end face of the connecting skirt being greater than 0mm and less than or equal to 0.2mm.

11. The shield according to any one of claims 1-8, wherein the dividing wall is located at one side or in the middle of the shield body.

12. A circuit board assembly comprising a circuit board and a shield according to any one of claims 1-11, said shield being secured to said circuit board, said circuit board having a plurality of electronic devices thereon, a plurality of said electronic devices comprising first and second electronic devices that interfere with each other, said first electronic device being located in one of said shield cavities and said second electronic device being located in the other of said shield cavities.

13. The circuit board assembly of claim 12, wherein the connecting skirt and connecting segment in the shield are both sealingly connected to the circuit board.

14. The circuit board assembly of claim 13, wherein a space is provided between the end surface of the connection section and the board surface of the circuit board.

15. An electronic device comprising a housing and the circuit board assembly of any one of claims 12-14, the circuit board assembly being located within the housing.