Electronic device and middle frame

Abstract

The present application relates to the audio technical field, and especially to an electronic device and a middle frame. The electronic device comprises a middle frame, a display screen and a loudspeaker module, wherein the display screen is mounted on one side of the middle frame; a sound output channel is formed between the display screen and the middle frame; the middle frame is provided with a communication hole; the communication hole is in communication with the sound output channel; the loudspeaker module is mounted on the side of the middle frame that faces away from the display screen; and sound emitted from the loudspeaker module enters the sound output channel via the communication hole. The electronic device is provided with a clearance area and a flow guide portion, the flow guide portion being located between the communication hole and the clearance area. The flow guide portion for flow guiding is provided, and guides air in the sound output channel, such that the maximum flow rate of the air in the sound output channel is reduced, thereby reducing noise generation, and facilitating an improvement in the audio quality of the electronic device, without affecting the other structures of the electronic device, i.e., the miniaturization design of the electronic device is facilitated, such that the user experience is improved.

Description

Electronic device and middle frame

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 28, 2024, with application number 202420633459.4 and application name “An electronic device and a middle frame”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of audio technology, and in particular to an electronic device and a middle frame. Background Art

[0003] Mobile phones, tablets, and other electronic products often use micro-speakers to generate sound. Airflow noise has always been a common problem with micro-speakers. This is especially true when playing piano sounds, where the impact of airflow in the front chamber creates a "buzzing" noise, which degrades the user experience. Traditionally, this noise has been reduced by increasing the sound output area. However, this area is easily limited by the size and structure of the electronic device, and speakers still cannot fully meet the noise reduction requirements. Consequently, existing technologies struggle to balance the miniaturization of electronic devices with the demands for high sound quality. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide an electronic device and a middle frame. The electronic device can meet the requirements of miniaturization and high sound quality.

[0005] In a first aspect, an embodiment of the present application provides an electronic device, which includes a middle frame, a display screen, and a speaker module. The display screen is installed on one side of the middle frame, and a sound output channel is formed between the display screen and the middle frame. The middle frame has a connecting hole, which is connected to the sound output channel. The speaker module is installed on the side of the middle frame facing away from the display screen, and the sound emitted by the speaker module enters the sound output channel through the connecting hole. The electronic device has an avoidance area and a guide portion. The sound output channel surrounds the avoidance area, and the guide portion is located between the connecting hole and the avoidance area.

[0006] For example, the sound outlet channel can be arranged around the avoidance area. Since the sound outlet channel is arranged around the avoidance area, it is easy to form a narrow airflow area around the avoidance area. When the air flows in the narrow airflow area, the flow rate is easy to be too fast or vortex is easy to be generated, thereby generating noise.

[0007] When the diaphragm vibrates, the air in the sound inlet and outlet channels will be driven by the diaphragm to vibrate. Taking the diaphragm pushing the air as an example, the air will move from the diaphragm toward the connecting hole, and diffuse from the connecting hole to the sound outlet channel. In the sound outlet channel, since the guide part is located between the avoidance area and the connecting hole, part of the air will flow out directly from the sound outlet, and part of the air will first contact the guide part and slightly change the direction of movement, and then flow through the avoidance area and out of the sound outlet. It can be understood that the guide part can guide the air toward the area with low air density, reduce the air density in the narrow airflow area, thereby reducing the flow rate of the air in the narrow airflow area, and thus reducing the noise. In addition, the guide part can make the flow path of the air in the sound outlet channel smoother, which is conducive to reducing the generation of vortices and thus reducing noise.

[0008] In this embodiment, a guide portion is provided, which is used to guide the air in the sound outlet channel to reduce the maximum flow rate of the air in the sound outlet channel, thereby reducing the generation of noise, which is beneficial to improving the sound quality of the electronic device when it makes sound, thereby improving the sound quality of the electronic device, and will not affect other structures of the electronic device, that is, it is beneficial to the miniaturized design of the electronic device and improves the user experience.

[0009] In some embodiments, the sound outlet channel has a first wall, a second wall and a third wall, the second wall is arranged opposite to the first wall, and the third wall is connected between the first wall and the second wall; the connecting hole is arranged corresponding to the connecting position of the second wall and the third wall, and the avoidance area is located between the first wall and the second wall; the sound outlet channel also has a sound outlet, and the sound outlet is at least partially located on the first wall.

[0010] In this embodiment, by setting up the structure of the sound output channel, it is convenient to utilize the space around the avoidance area, which is beneficial to increasing the volume of the sound output channel. In addition, the speaker module is arranged in the length and width directions of the electronic device, which is convenient to save the thickness space of the electronic device, thereby facilitating the thinning of the electronic device.

[0011] In some embodiments, the guide portion is a boss, and the surface of the guide portion facing the communicating hole is a curved surface.

[0012] In this embodiment, the structural arrangement of the guide portion facilitates the guide portion to directly guide the movement of air, and the curved guide surface can also reduce eddy currents during air flow and reduce the generation of noise.

[0013] In some embodiments, the electronic device further includes a drainage portion, which is a boss. The drainage portion is protruding from the boss surface of the drainage portion, and the surface of the drainage portion facing the connecting hole is closer to the avoidance area relative to the surface of the drainage portion facing the connecting hole.

[0014] In this embodiment, a drainage portion is provided to assist drainage so as to reduce the maximum flow velocity of air in the sound outlet channel, thereby reducing the generation of noise.

[0015] In some embodiments, the guide portion is disposed in close contact with the avoidance area.

[0016] In this embodiment, since the guide part and the avoidance area are arranged in close contact, there is no gap between the guide part and the avoidance area, so no gas flow channel will be formed between the guide part and the avoidance area in the sound outlet channel. At this time, the structure of the sound outlet channel is simple, which facilitates the flow of air in the sound outlet channel.

[0017] In some embodiments, the guide portion is located at an edge of the communicating hole.

[0018] In this embodiment, the guide portion can guide the air at the communicating hole, so that the air can be guided at the beginning of the sound outlet channel, making it easier to change the flow direction of the air.

[0019] In some embodiments, the guide portion includes a plurality of guide columns, which are arranged at intervals, and the spacing between at least two adjacent guide columns is smaller than the spacing between other adjacent guide columns, and the spacing between at least some of the guide columns on the side close to the avoidance area is smaller than the spacing between at least some of the guide columns on the side away from the avoidance area.

[0020] In this embodiment, by providing a plurality of guide columns and setting the spacing between the guide columns, the flow direction of the air can be guided more finely according to the shape of the sound outlet channel, thereby reducing the generation of noise.

[0021] In some embodiments, the guide portion is a mesh, which is fixed to the middle frame. The aperture of the mesh is unevenly set, and the aperture of at least part of the mesh on the side of the mesh close to the avoidance area is smaller than the aperture of at least part of the mesh on the side of the mesh away from the avoidance area.

[0022] Exemplarily, the middle frame may be provided with a plurality of mounting posts, and the plurality of mounting posts are located around the communicating hole, and the mesh cloth guide portion may be bonded to the mounting posts, thereby achieving fixation of the guide portion.

[0023] In this embodiment, by setting the guide part to be a mesh and setting the mesh holes of the guide part to have non-uniform apertures, the flow direction of the air can be guided more finely according to the shape of the sound outlet channel, thereby reducing the generation of noise.

[0024] In some embodiments, the sound outlet is formed by a gap between an edge of the middle frame and an edge of the display screen, and an aspect ratio of the sound outlet is greater than or equal to 10.

[0025] In this embodiment, the sound outlet is relatively simple to form, with minimal impact on the structure of the display screen and the midframe, which helps simplify the manufacturing process and improve the structural strength of the electronic device. In addition, the sound outlet has a large aspect ratio, which helps increase the sound output area of ​​the sound outlet, thereby reducing noise.

[0026] In some embodiments, the air guide portion and the middle frame are integrally formed structural members.

[0027] In this embodiment, the air guide portion and the middle frame are integrally formed as a structural member, so that the air guide portion can be formed when the middle frame is manufactured, thereby improving the connection reliability of the air guide portion and simplifying the assembly of the electronic device.

[0028] In this embodiment, the speaker module has a diaphragm, and the diaphragm is arranged toward the communication hole.

[0029] In some embodiments, since the diaphragm is facing the connecting hole, the distance between the diaphragm and the connecting hole is small and the path is straight, the sound emitted by the diaphragm will be easily transmitted to the connecting hole and then enter the sound output channel, which has little impact on the sound quality of the sound emitted by the diaphragm, and is beneficial to improving the sound quality of electronic equipment.

[0030] In some embodiments, the area of ​​the communication hole is greater than or equal to one eighth of the area of ​​the diaphragm.

[0031] For example, the area of ​​the communication hole may be one quarter of the area of ​​the diaphragm of the speaker module.

[0032] In this embodiment, the connecting hole has a larger area and has less impact on the sound quality of the speaker module; moreover, the opening of the connecting hole causes less structural damage to the bottom wall of the second mounting groove, and the bottom wall of the second mounting groove is more reliable in fixing the speaker module.

[0033] In some embodiments, a sound input channel is formed between the diaphragm and the middle frame, and the sound input channel and the sound output channel are connected through a connecting hole.

[0034] In this embodiment, the sound input channel and the sound output channel can be connected through a connecting hole to form a complete cavity space. At this time, the sound input channel and the sound output channel are equivalent to the front cavity of the speaker module, which is conducive to making the front cavity of the speaker module have a larger volume, thereby reducing the impact on the sound quality of the electronic device.

[0035] In some embodiments, the electronic device further includes a front camera, at least a portion of which is installed in the avoidance area; and / or the sound output channel is arranged around the avoidance area.

[0036] In this embodiment, since the sound output channel surrounds the avoidance area, the space around the avoidance area is utilized, so that the sound output channel has a larger area, which is equivalent to making the speaker module have a larger front cavity, reducing the flow rate of air in the front cavity, which is beneficial to reducing the noise of electronic equipment when the speaker module makes sound.

[0037] In the second aspect, an embodiment of the present application provides a middle frame, which is provided with a first mounting slot and a second mounting slot, and the first mounting slot and the second mounting slot are located on opposite sides of the middle frame; the first mounting slot is used to install a display screen, and the second mounting slot is used to install a speaker module; the middle frame also has a sound outlet slot and a connecting hole, and the sound outlet slot is used to form a sound outlet channel with the display screen, and the connecting hole passes through the middle frame and is connected to the sound outlet slot; the middle frame also has a mounting hole and a guide portion, and the mounting hole passes through the middle frame and is surrounded by the sound outlet slot, and the guide portion is protruded from the bottom wall of the sound outlet slot and is located between the connecting hole and the mounting hole.

[0038] In this embodiment, when the middle frame is used in an electronic device, the air guide portion is used to guide air, and the sound outlet groove is used to form a sound outlet channel with the display screen. By providing the air guide portion, it guides the air in the sound outlet channel to reduce the maximum flow rate of air in the sound outlet channel, thereby reducing the generation of noise, which is beneficial to improving the sound quality of the electronic device when it is sounded, thereby improving the sound quality of the electronic device, and does not affect other structures of the electronic device. In other words, it is beneficial to the miniaturization design of the electronic device and improves the user experience.

[0039] In some embodiments, the guide portion is a boss, and the surface of the guide portion facing the communicating hole is a curved surface.

[0040] In this embodiment, the structural arrangement of the guide portion facilitates the guide portion to directly guide the movement of air, and the curved guide surface can also reduce eddy currents during air flow and reduce the generation of noise.

[0041] In some embodiments, the middle frame further includes a drainage portion, which is a boss. The drainage portion is protruding from the boss surface of the drainage portion, and the surface of the drainage portion facing the connecting hole is closer to the mounting hole than the surface of the drainage portion facing the connecting hole.

[0042] In this embodiment, a drainage portion is provided to assist drainage so as to reduce the maximum flow velocity of air in the sound outlet channel, thereby reducing the generation of noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0044] FIG1 is a schematic structural diagram of a general loudspeaker;

[0045] FIG2 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0046] FIG3 is an exploded schematic diagram of the electronic device shown in FIG2 ;

[0047] FIG4 is a schematic diagram of a partial structure of the middle frame shown in FIG3 ;

[0048] FIG5 is a schematic structural diagram of a portion of the structure of the middle frame shown in FIG3 from another perspective;

[0049] FIG6 is a cross-sectional view of a portion of the structure taken along AA in FIG2 ;

[0050] FIG7 is a simplified diagram of air flow in the sound inlet and outlet channels of the electronic device shown in FIG2 ;

[0051] FIG8 is a schematic structural diagram of the sound input channel and the sound output channel shown in FIG7 ;

[0052] FIG9 is a schematic structural diagram of the sound input channel and the sound output channel shown in FIG8 from another perspective;

[0053] FIG10 is a schematic diagram of the sound input channel and the sound output channel of the electronic device shown in FIG7 in other embodiments;

[0054] FIG11 is a simulation diagram of air flow rates in the sound inlet and outlet channels of the electronic device shown in FIG10 ;

[0055] FIG12 is a comparison diagram of the simulation diagram shown in FIG11;

[0056] FIG13 is a schematic structural diagram of a middle frame of the electronic device shown in FIG3 in other embodiments;

[0057] FIG14 is a schematic structural diagram of a middle frame of the electronic device shown in FIG3 in still other embodiments. DETAILED DESCRIPTION

[0058] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0059] In the description of the embodiments of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood in a broad sense. For example, "connected" can mean detachably connected or non-detachably connected; it can mean directly connected or indirectly connected through an intermediary. "Multiple" means at least two.

[0060] The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inside", "outside", "top", "bottom", "side", etc., are only references to the directions in the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0061] In the embodiments of the present application, the limitations of the relative position relationship mentioned, such as parallel, perpendicular, aligned, etc., are all for the current state of the art, rather than absolutely strict limitations, and a small amount of deviation is allowed, and it is possible to be approximately parallel, approximately perpendicular, approximately aligned, etc. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees. For example, A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 degrees and 100 degrees.

[0062] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of the features.

[0063] Please refer to FIG1 , which is a schematic diagram of the structure of a general loudspeaker.

[0064] In a typical speaker 1000, the speaker 1000 has a diaphragm 1001. The diaphragm 1001 can divide the cavity of the speaker 1000 into a front cavity 1002 and a rear cavity 1003. The front cavity 1002 is connected to the external environment, while the rear cavity 1003 is generally not directly connected to the external environment. The diaphragm 1001 can vibrate and produce sound, which is transmitted to the outside through the front cavity 1002. During the structural design of the speaker 1000, the front cavity 1002 may generate a narrow airflow area. The narrow airflow area is the area where the cross-section of the cavity decreases from large to small in the direction of sound propagation.

[0065] Speaker 1000 can be used in electronic devices. The electronic devices can form a channel for speaker 1000 to produce sound. In this case, diaphragm 1001 of speaker 1000 can also communicate with the channel of the electronic device. The channel of the electronic device is equivalent to the front cavity 1002 of speaker 1000. The structure of electronic devices is generally complex, which can easily form a narrow airflow area in the channel, that is, a narrow airflow area in the front cavity 1002.

[0066] When the diaphragm 1001 of the speaker 1000 vibrates and produces sound, it acts like a piston, rapidly pushing air outward. When the airflow passes through the narrow airflow area of ​​the front cavity 1002 of the speaker 1000, the flow speed increases and vortices are generated, causing the sound produced by the speaker 1000 to produce noise and affect the sound quality. Existing technologies generally reduce the generation of noise by increasing the sound output area or cavity volume of the front cavity 1002.

[0067] 2 and 3 , FIG. 2 is a schematic structural diagram of an electronic device 100 provided in an embodiment of the present application, and FIG. 3 is an exploded schematic diagram of the electronic device 100 shown in FIG. 2 .

[0068] In the embodiment of the present application, the electronic device 100 can be a device with an audio playback function, such as a mobile phone, a tablet computer, a multimedia player, headphones, a speaker, a laptop computer, an in-vehicle device, a foldable terminal device, a television, or a wearable device. Among them, the wearable device can be a smart bracelet, a smart watch, a smart head display, smart glasses, etc. The electronic device 100 of the embodiment shown in Figure 1 is described using a mobile phone as an example. Of course, other types of electronic devices 100 can also adopt similar structures, which will not be described in detail below.

[0069] For ease of description, the width direction of the electronic device 100 is defined as the X direction, the length direction is defined as the Y direction, and the thickness direction is defined as the Z direction.

[0070] In some embodiments, the electronic device 100 may include a middle frame 10, a speaker module 20, a cover plate 30, and a display screen 40. The cover plate 30, the speaker module 20, the middle frame 10, and the display screen 40 may be stacked in sequence. The middle frame 10 and the cover plate 30 may constitute the housing assembly of the electronic device 100.

[0071] For example, the middle frame 10 may be a generally rectangular structure, and the shape of the middle frame 10 may be substantially the same as that of the electronic device 100. The middle frame 10 may serve as the main structural component of the electronic device 100 to carry and install the various components of the electronic device 100. The middle frame 10 may form a plurality of slots or cavities to install the components of the electronic device 100.

[0072] The middle frame 10 may be formed by splicing and assembling a plurality of components. When the structure of the middle frame 10 is relatively complex, it is helpful to simplify the forming of the middle frame 10 .

[0073] The main material of the middle frame 10 can be a metal material, for example, aluminum alloy, magnesium alloy, stainless steel, titanium alloy, etc. The middle frame 10 can also have plastic inserts, etc., which is not strictly limited in this example. In other examples, the main material of the middle frame 10 can be plastic.

[0074] For example, the display screen 40 can be fixedly connected to one side of the middle frame 10. For example, the display screen 40 can be fixedly connected to the middle frame 10 by bonding, snapping, etc.

[0075] The display screen 40 may be electrically connected to the middle frame 10 to achieve grounding of the display screen 40 , thereby protecting the display screen 40 .

[0076] Among them, the display screen 40 can be an organic light-emitting diode (OLED) display screen 40, an active-matrix organic light-emitting diode or active-matrix organic light-emitting diode (AMOLED) display screen 40, a mini organic light-emitting diode (MID) display screen 40, a micro organic light-emitting diode (MID) display screen 40, a micro organic light-emitting diode (MID) display screen 40, a quantum dot light-emitting diode (QLED) display screen 40, a liquid crystal display (LCD), etc.

[0077] The display screen 40 can be a flat screen, and the area of ​​the display screen 40 can occupy most of the area of ​​the middle frame 10 to provide a better display effect. In other embodiments, the display screen 40 can be a curved screen, a foldable screen, or a flexible screen. The specific configuration can be based on the needs of the electronic device 100 and is not strictly limited in this embodiment.

[0078] Exemplarily, the speaker module 20 may be located inside the electronic device 100 .

[0079] Among them, the speaker module 20 can be located on the top side of the electronic device 100. The speaker module 20 can be fixedly installed on the middle frame 10. The electronic device 100 can have a sound outlet channel 1, and the sound outlet channel 1 is connected to the external environment through the sound outlet 11. The speaker module 20 transmits sound to the external environment through the sound outlet channel 1. The sound outlet 11 can be located at the end of the top side of the electronic device 100 to facilitate the opening of the sound outlet 11. As shown in Figure 1, the arrow is the approximate propagation direction of the sound, that is, the approximate flow direction of the air. The flow of air is limited by the shape of the sound outlet channel 1. When the sound outlet channel 1 has a bend, the movement path of the air in the sound outlet channel 1 is also bent.

[0080] Among them, the speaker module 20 can have a diaphragm 201. The speaker module 20 can be powered on and drive the diaphragm 201 to produce sound. When the speaker module 20 is connected to alternating current with different characteristics (such as frequency, voltage), the diaphragm 201 can produce sound at the corresponding frequency and loudness, thereby emitting the desired sound. For example, the diaphragm 201 can be exposed relative to the speaker module 20 to facilitate the sound production of the speaker module 20. It can be understood that the diaphragm 201 can be connected to the sound output channel 1 so that the diaphragm 201 can vibrate the air in the sound output channel 1 to produce sound.

[0081] For example, the cover plate 30 can be fixedly connected to the side of the middle frame 10 facing away from the display screen 40. For example, the cover plate 30 can be fixedly connected to the middle frame 10 by bonding, snapping, etc.

[0082] The middle frame 10 may be provided with a mounting slot (not shown), into which the cover 30 may be mounted. The cover 30 closes the side of the middle frame 10 to which it is connected, thereby protecting the components between the cover 30 and the middle frame 10. The cover 30 may be sealed to the middle frame 10 to prevent impurities such as water and dust from outside the electronic device 100 from entering the inside of the electronic device 100, thereby making the electronic device 100 waterproof and dustproof.

[0083] The shape of the cover plate 30 may be substantially rectangular, and the area of ​​the cover plate 30 may be substantially the same as the area of ​​the middle frame 10 .

[0084] The material of the cover plate 30 may be glass, ceramic, metal, etc., which is not strictly limited in this embodiment.

[0085] In some embodiments, the electronic device 100 may further include a front camera 50 , which is located on the inner side of the electronic device 100 .

[0086] The front camera 50 may be located in the middle of the top of the electronic device 100 , and the front camera 50 may be installed in the middle frame 10 .

[0087] The front camera 50 may include a light receiving sheet 501 for receiving light for imaging. A light hole 401 may be provided at the top of the display screen 40. The light hole 401 may correspond to the light receiving sheet 501 of the front camera 50, allowing external light to pass through the light hole 401 and enter the front camera 50 through the light receiving sheet 501.

[0088] It is understandable that the number of the front cameras 50 can be one or more. For example, the number of the front cameras 50 can be 2, 3, etc. In this case, the number of the light-transmitting holes 401 can be set to 2 or 3 accordingly.

[0089] It is understandable that the electronic device 100 may further include a rear camera, and the rear camera may be located inside the electronic device 100. The structure of the rear camera is not strictly limited in this embodiment.

[0090] In some embodiments, the electronic device 100 may further include a speaker 60 located on the bottom side. A sound hole may be provided on the bottom side of the electronic device 100, and the sound hole may be located on one side of the bottom side of the electronic device 100. The speaker 60 emits sound through the sound hole. The speaker module 20 on the top side and the speaker 60 on the bottom side may emit sound simultaneously, thereby generating stereo sound. Of course, the speaker module 20 on the top side and the speaker 60 on the bottom side may also emit sound independently to meet different usage scenarios.

[0091] In some embodiments, the electronic device 100 may further include a circuit board assembly (not shown). The circuit board assembly may be located between the cover plate 30 and the middle frame 10, and the cover plate 30, the circuit board assembly, and the middle frame 10 may be stacked in sequence. The circuit board assembly may be communicatively connected to the display screen 40, the speaker module 20, and the front camera 50, so that the circuit board assembly controls the three. The structure of the circuit board assembly is not strictly limited in this embodiment.

[0092] In some embodiments, the electronic device 100 may further include multiple modules (not shown in the figure), and the multiple modules may be housed in the middle frame 10. The multiple modules of the electronic device 100 may include, but are not limited to, a battery, an earpiece module, a microphone module, a sensor module, etc. The embodiment of the present application does not specifically limit the number, type, location, etc. of the modules of the electronic device 100.

[0093] Please refer to Figures 3 to 5 , Figure 4 is a partial structural diagram of the middle frame 10 shown in Figure 3 , and Figure 5 is a partial structural diagram of the middle frame 10 shown in Figure 3 from another perspective. The perspective of Figure 5 is flipped relative to that of Figure 4 .

[0094] In some embodiments, the middle frame 10 may include a frame 101 and a middle plate 102 .

[0095] The middle plate 102 and the frame 101 may be an integral structural member. In some examples, the middle plate 102 and the frame 101 may be integrally formed, but the present invention is not limited thereto. For example, the middle plate 102 and the frame 101 may have detachable parts, which may be assembled to form a portion of the middle plate 102 or the frame 101.

[0096] Among them, the frame 101 can be arranged around the middle plate 102, and the frame 101 is fixedly connected to the middle plate 102. The frame 101 can be roughly annular in structure, and a charging hole, a card slot hole, etc. can be provided on the frame 101. The frame 101 can be made of metal, and the frame 101 can form a radiation structure of multiple antennas of the electronic device 100. The middle plate 102 can be roughly plate-shaped in structure, and both sides of the middle plate 102 can be used to install components and modules of the electronic device 100. The middle plate 102 can be partially hollowed out so that the space on both sides of the middle plate 102 can be connected. When there is a module that needs to cross the middle plate 102, it can cross from the hollowed area, thereby reducing the thickness of the electronic device 100, which is conducive to the thin design of the electronic device 100.

[0097] In some embodiments, the middle frame 10 may be provided with a first mounting groove 103 and a second mounting groove 104 .

[0098] The first mounting groove 103 and the second mounting groove 104 can be located on opposite sides of the middle frame 10. The first mounting groove 103 is located on the side of the middle frame 10 facing away from the cover plate 30, and the second mounting groove 104 is located on the side of the middle frame 10 facing the cover plate 30.

[0099] The first mounting groove 103 can be used to mount the display screen 40 . The first mounting groove 103 has a relatively large space and can be formed in the frame 101 .

[0100] The second mounting slot 104 can be used to mount the speaker module 20. The second mounting slot 104 occupies a relatively small space and can be formed on the middle plate 102. For example, the middle plate 102 can have a plurality of protruding portions 1041, which can be multiple. These multiple protruding portions 1041 enclose a slot space, thereby forming the second mounting slot 104. The speaker module 20 can be placed within the second mounting slot 104, and the main structure of the speaker module 20 can be secured to the multiple protruding portions 1041, thereby securing the speaker module 20 to the middle frame 10. In other embodiments, the second mounting slot 104 can be formed by a continuous baffle structure.

[0101] In some embodiments, the middle frame 10 may be provided with a sound outlet slot 105. The sound outlet slot 105 may be provided on the side of the middle frame 10 facing away from the second mounting slot 104. The sound outlet slot 105 may be located on the top side of the middle frame 10 and extend to the side frame 101. Partial areas of the sound outlet slot 105 may be recessed relative to the surface of the middle plate 102. In a direction perpendicular to the surface of the middle plate 102 (i.e., the Z direction), partial areas of the sound outlet slot 105 may overlap partial areas of the second mounting slot 104.

[0102] Exemplarily, the sound outlet slot 105 may have a first side wall 1051 , a second side wall 1052 and a third side wall 1053 , the second side wall 1052 is disposed opposite to the first side wall 1051 , and the third side wall 1053 is connected between the first side wall 1051 and the second side wall 1052 .

[0103] In some embodiments, the middle frame 10 may be provided with a communication hole 106 . The communication hole 106 may be provided in the middle plate 102 , and the communication hole 106 connects spaces on both sides of the middle plate 102 .

[0104] The communicating hole 106 can communicate with the second mounting slot 104 and the sound outlet slot 105. At this time, the second mounting slot 104 and the sound outlet slot 105 can form a communicating space.

[0105] In some embodiments, the middle frame 10 may further be provided with a third mounting slot 107. The third mounting slot 107 may be located on the side of the middle frame 10 facing the cover plate 30, that is, the third mounting slot 107 and the second mounting slot 104 are located on the same side of the middle frame 10. The third mounting slot 107 may be located on the top side of the middle frame 10 and in the middle of the middle frame 10 in the X direction.

[0106] The third mounting groove 107 can be roughly rectangular in structure, and the third mounting groove 107 can be formed in the middle plate 102. In the Z direction, the third mounting groove 107 and the sound outlet groove 105 can overlap. For example, on the side of the middle plate 102 having the second mounting groove 104, the third mounting groove 107 can be formed by the middle plate 102 being recessed. In this case, on the other side of the middle plate 102, the bottom wall of the third mounting groove 107 can be raised relative to the plate surface of the middle plate 102. In addition, the sound outlet groove 105 surrounds the third mounting groove 107, and the side walls of the third mounting groove 107 are equivalent to being used to form the sound outlet groove 105.

[0107] The bottom wall of the third mounting groove 107 may be provided with a mounting hole 1071. The mounting hole 1071 may pass through the middle plate 102 and connect the spaces on both sides of the middle plate 102. The mounting hole 1071 may be a circular hole.

[0108] In addition, on the side of the middle frame 10 with the sound outlet groove 105, the surrounding side of the mounting hole 1071 can form a partial area of ​​the avoidance area 108, that is, the electronic device 100 has a avoidance area 108. Among them, the avoidance area 108 and the connecting hole 106 can be arranged along the X direction. The avoidance area 108 can be a roughly circular area, the avoidance area 108 can be concentrically arranged with the mounting hole 1071, and the area of ​​the avoidance area 108 is greater than or equal to the area of ​​the mounting hole 1071. It is understandable that the area of ​​the avoidance area 108 can include the area of ​​the mounting hole 1071. It is understandable that the connecting hole 106 and the avoidance area 108 can be staggered in the Y direction.

[0109] The third mounting slot 107 can be used to mount the front camera 50. The majority of the front camera 50 can be mounted within the third mounting slot 107, and the mounting hole 1071 can be used to mount a portion of the light intake plate 501 of the front camera 50, allowing light to enter the light intake plate 501 of the front camera 50. The escape area 108 can accommodate a portion of the front camera 50 and can also accommodate fixings or seals that secure the front camera 50.

[0110] In some embodiments, the middle frame 10 may further include an air guide 109 , that is, the electronic device 100 includes an air guide 109 . The air guide 109 is located on a side of the middle frame 10 having the sound outlet slot 105 , and the air guide 109 may be located inside the sound outlet slot 105 .

[0111] For example, the guide portion 109 may be located between the communication hole 106 and the avoidance area 108. The guide portion 109 may be disposed in close contact with the avoidance area 108, that is, the guide portion 109 is in close contact with the avoidance area 108 without any gap.

[0112] The guide portion 109 may be a boss structure, and the surface of the guide portion 109 facing the connecting hole 106 is a guide surface 1091 . The guide surface 1091 may be a curved surface, for example, a circular arc surface.

[0113] For example, the air guide 109 can be a roughly triangular columnar structure, and can be formed by a portion of the structure of the middle plate 102. In this case, the air guide 109 and the middle frame 10 are integrally formed structural members, so that the air guide 109 can be formed when the middle frame 10 is manufactured, thereby improving the connection reliability of the air guide 109 and simplifying the assembly of the electronic device 100.

[0114] In some other examples, the guide portion 109 may also be a rib structure or a rib structure having a guide surface 1091 , which is not strictly limited in this embodiment.

[0115] In some embodiments, the electronic device 100 may further include a drainage portion 1010 , wherein the drainage portion 1010 may be formed on the middle frame 10 .

[0116] Exemplarily, the drainage portion 1010 may be a boss structure. In this case, the drainage portion 109 is protruding from the boss surface of the drainage portion 1010. The surface of the drainage portion 109 facing the connecting hole is closer to the avoidance area 108 than the surface of the drainage portion 1010 facing the connecting hole 106. The surface of the drainage portion 1010 facing the connecting hole 106 is the drainage surface 1011, that is, the drainage surface 1091 is set inward relative to the drainage surface 1011 toward the avoidance area 108. In other examples, the electronic device 100 may not include the drainage portion 1010.

[0117] In some other embodiments, a gap may be left between the air guide portion 109 and the avoidance area 108 .

[0118] Please refer to FIG. 4 to FIG. 6 , FIG. 6 is a cross-sectional view of a portion of the structure cut along line AA in FIG. 2 .

[0119] In some embodiments, the display screen 40 can be mounted in the first mounting slot 103, forming a sound output channel 1 between the display screen 40 and the middle frame 10. The speaker module 20 can be mounted in the second mounting slot 104, forming a sound input channel 2 between the speaker module 20 and the middle frame 10. The sound input channel 2 and the sound output channel 1 can be connected via a connecting hole 106, thereby forming a complete cavity space. In this case, the sound input channel 2 and the sound output channel 1 both act as the front cavity of the speaker module 20, which helps to increase the volume of the front cavity of the speaker module 20, thereby reducing the impact on the sound quality of the electronic device 100.

[0120] For example, the speaker module 20 may include a diaphragm 201, a frame 202, a voice coil (not shown), and a magnetic circuit assembly (not shown). The diaphragm 201 and the magnetic circuit assembly may be fixed to the frame 202, the diaphragm 201 and the magnetic circuit assembly being positioned relative to each other. The magnetic circuit assembly may have a magnetic gap, with one end of the voice coil fixed to the diaphragm 201 and the other end located within the magnetic gap of the magnetic circuit assembly. When power is applied to the voice coil, the voice coil generates an interaction force with the magnetic circuit assembly, driving the voice coil. Since the voice coil is fixedly connected to the diaphragm 201, the voice coil causes the diaphragm 201 to vibrate, thereby producing sound.

[0121] The basin frame 202 can be fixedly connected to the protrusion 1041 to fix the speaker module 20 to the second installation groove 104. In addition, the basin frame 202 can abut against the bottom wall of the second installation groove 104.

[0122] Among them, the diaphragm 201 can be arranged toward the middle plate 102, and a sound inlet channel 2 is formed between the diaphragm 201 and the wall surface of the second mounting groove 104. For example, the diaphragm 201 can be arranged toward the connecting hole 106, that is, the diaphragm 201 faces the side facing away from the cover plate 30. The vibration direction of the diaphragm 201 can be parallel to the Z direction to facilitate the installation of the speaker module 20. At this time, since the diaphragm 201 faces the connecting hole 106, the distance between the diaphragm 201 and the connecting hole 106 is small, and the path is straight. The sound emitted by the diaphragm 201 will be easily transmitted to the connecting hole 106, and then enter the sound outlet channel 1, which has little effect on the sound quality of the sound emitted by the diaphragm 201, which is beneficial to improving the sound quality of the electronic device 100.

[0123] It can be understood that the speaker module 20 and the first mounting groove 103 can be sealedly connected to form the structure of the sound inlet channel 2, so that the sound inlet channel 2 forms a relatively closed cavity, and allows the sound to enter the sound outlet channel 1 from the connecting hole 106, avoiding sound leakage and affecting the sound quality.

[0124] For example, a portion of the display screen 40 is positioned opposite the sound outlet slot 105, with a gap between the display screen 40 and the sound outlet slot 105. The portion of the display screen 40 that is positioned opposite the sound outlet slot 105 can form a sound outlet channel 1 with the sound outlet slot 105. Furthermore, other portions of the display screen 40 can contact and be fixedly connected to the middle frame 10, thereby securing the display screen 40 to the first mounting slot 103 of the middle frame 10. For example, glue or adhesive can be applied to the side of the display screen 40 that faces the middle frame 10, thereby securing the display screen 40 to the middle frame 10.

[0125] Since the sound outlet slots 105 surround the avoidance area 108, the sound outlet channel 1 surrounds the avoidance area 108. This allows the sound outlet channel 1 to have a larger area within the plane formed by the X and Y directions, effectively creating a larger front cavity for the speaker module 20. This reduces the velocity of air flowing through the front cavity, thus reducing noise from the electronic device 100 when the speaker module 20 produces sound.

[0126] It is understandable that since other components and modules need to be installed in the middle frame 10, the sound output channel 1 is limited by the structure of the electronic device 100, and the volume of the sound output channel 1 is usually difficult to increase. This example uses the space around the avoidance area 108 to form the sound output channel 1, which increases the volume of the sound output channel 1 and is beneficial to improving the sound quality of the electronic device 100.

[0127] Exemplarily, the sound outlet channel 1 may have a first wall surface 12 and a second wall surface 13 , wherein the second wall surface 13 is arranged opposite to the first wall surface 12 .

[0128] Exemplarily, the first wall 12, the guide portion 109 and the second wall 13 can be arranged along a first direction, and the first direction can be parallel to the length direction (i.e., the Y direction) of the electronic device 100. At this time, the sound outlet 11 can be opened on the first wall 12, and the sound outlet 11 is at least partially located on the first wall 12. The connecting hole 106 can be located at the end of the second wall 13. In some examples, the connecting hole 106 and the avoidance area 108 can be arranged along the second direction, and the connecting hole 106 and the avoidance area 108 can be staggered in the first direction, which is not strictly limited in this example, wherein the second direction is parallel to the width direction (i.e., the X direction) of the electronic device 100.

[0129] The sound outlet 11 can be formed by the gap between the edge of the middle frame 10 and the edge of the display screen 40. In this case, the formation of the sound outlet 11 is relatively simple, with minimal impact on the structure of the display screen 40 and the middle frame 10, which helps to simplify the manufacturing process and improve the structural strength of the electronic device 100. In other embodiments, the sound outlet 11 can be formed by drilling a hole in the border 101 of the middle frame 10, or by drilling a hole at the top of the screen.

[0130] The aspect ratio of the sound outlet 11 may be greater than or equal to 10. In this case, the sound outlet 11 has a larger aspect ratio, which is beneficial to increasing the sound outlet area of ​​the sound outlet 11, thereby reducing noise.

[0131] The guide portion 109 is used for guiding the air in the sound outlet channel 1 to avoid eddy currents and the like.

[0132] Among them, since the guide part 109 is arranged in close contact with the avoidance area 108, there is no gap between the guide part 109 and the avoidance area 108, so no gas flow channel will be formed between the guide part 109 and the avoidance area 108 in the sound outlet channel 1. At this time, the structure of the sound outlet channel 1 is simple, which facilitates the flow of air in the sound outlet channel 1.

[0133] It can be understood that the display screen 40 and the structure of the middle frame 10 forming the sound outlet channel 1 can be sealed and connected so that the sound outlet channel 1 forms a relatively closed cavity, and the sound entering the sound outlet channel 1 through the connecting hole 106 is emitted from the sound outlet 11, avoiding sound leakage and affecting the sound quality.

[0134] It is understood that the light-transmitting hole 401 of the display screen 40 (as shown in FIG6 ) can be arranged correspondingly to the mounting hole 1071 of the middle frame 10 (as shown in FIG4 ), for example, the two can be arranged concentrically to facilitate light entry for the front camera 50 (as shown in FIG3 ). Furthermore, the sound output channel 1 is not connected to the light-transmitting hole 401 or the mounting hole 1071, so that the sound output channel 1 forms a relatively closed cavity to prevent sound leakage.

[0135] Since the sound outlet slots 105 are arranged around the avoidance area 108, a narrow airflow area is easily generated around the avoidance area 108. When air flows in the narrow airflow area, the flow rate is easily too fast or vortexes are easily generated, thereby generating noise.

[0136] When the diaphragm 201 vibrates, the air in the sound inlet channel 2 and the sound outlet channel 1 will be driven by the diaphragm 201 to vibrate. As shown in Figures 4 and 6, taking the diaphragm 201 pushing the air as an example, the air will move from the diaphragm 201 toward the connecting hole 106 and diffuse from the connecting hole 106 to the sound outlet channel 1. In the sound outlet channel 1, because the guide portion 109 is located between the avoidance area 108 and the connecting hole 106, some air will flow directly out of the sound outlet 11, and some air will first contact the guide portion 109 and slightly change its direction of movement, then flow through the avoidance area 108 and out of the sound outlet 11. It can be understood that the guide portion 109 can guide the air toward areas with low air density, reduce the air density in the narrow airflow area, thereby reducing the flow rate of the air in the narrow airflow area, and thus reducing noise. In addition, the guide portion 109 can make the air flow path in the sound outlet channel 1 smoother, which is conducive to reducing the generation of vortices and thus reducing noise.

[0137] In this embodiment, the guide portion 109 is provided to guide the air in the sound outlet channel 1 to reduce the maximum flow rate of the air in the sound outlet channel 1, thereby reducing the generation of noise, which is beneficial to improving the sound quality of the electronic device 100 when making sound, thereby improving the sound quality of the electronic device 100, and will not affect other structures of the electronic device 100, that is, it is beneficial to the miniaturized design of the electronic device 100 and improves the user experience.

[0138] In some embodiments, since the guide portion 109 can be a boss structure, the surface of the guide portion 109 facing the communication hole 106 is a curved surface. In this case, the structure of the guide portion 109 facilitates the guide portion 109 to directly guide the movement of air. The curved guide surface 1091 can also reduce eddy currents during air flow and reduce the generation of noise.

[0139] In some embodiments, when the electronic device 100 has a drainage portion 1010 (see FIG. 4 ), the drainage portion 1010 can be used to assist drainage to reduce the maximum flow velocity of air in the sound outlet channel 1 , thereby reducing the generation of noise.

[0140] In some embodiments, the area of ​​the communication hole 106 can be greater than or equal to one-eighth of the area of ​​the diaphragm 201. The area of ​​the communication hole 106 cannot be too small to prevent excessive air flow through the communication hole 106, thereby generating noise. For example, the area of ​​the communication hole 106 can be one-fourth the area of ​​the diaphragm 201 of the speaker module 20. In this case, the communication hole 106 has a larger area and has less impact on the sound quality of the speaker module 20. In addition, the opening of the communication hole 106 causes less structural damage to the bottom wall of the second mounting groove 104, and the bottom wall of the second mounting groove 104 more reliably secures the speaker module 20.

[0141] Please refer to Figure 7, which is a simplified diagram of air flow in the sound inlet channel 2 and the sound outlet channel 1 of the electronic device 100 shown in Figure 2. Figure 7 takes the air flowing out of the sound outlet 11 as an example.

[0142] In some embodiments, the overall direction of air flow is within the sound inlet channel 2 and the sound outlet channel 1, from the speaker toward the sound outlet 11. Pushed by the speaker, the air in the sound inlet channel 2 will flow from the connecting hole 106 toward various locations in the sound outlet channel 1. In the sound outlet channel 1, due to the positional relationship between the connecting hole 106 and the sound outlet channel 1, some air flows from the connecting hole 106 toward the left side of the sound outlet 11. Due to the arrangement of the air guide 109 and the avoidance zone 108, some air flows from the connecting hole 106 through the upper side of the air guide 109 and the upper side of the avoidance zone 108 to the middle area of ​​the sound outlet 11. Another portion of air flows from the connecting hole 106 through the lower side of the air guide 109, the lower side of the avoidance zone 108, and the right side of the avoidance zone 108 to the right side of the sound outlet 11.

[0143] Please refer to Figures 8 and 9 . Figure 8 is a schematic diagram of the structure of the sound inlet channel 2 and sound outlet channel 1 shown in Figure 7 , and Figure 9 is a schematic diagram of the structure of the sound inlet channel 2 and sound outlet channel 1 shown in Figure 8 from another perspective. To clearly illustrate the structure of the sound outlet channel 1 and sound inlet channel 2 , Figures 8 and 9 are physicalized diagrams, which are actually hollow cavities in electronic device 100 . Figure 9 shows the structure of Figure 8 after it has been flipped over.

[0144] In some embodiments, the sound outlet channel 1 may further include a third wall 14 and a fourth wall 15. The third wall 14 and the fourth wall 15 are disposed opposite each other and arranged along the X-direction. The third wall 14, the second wall 13, and the fourth wall 15 are sequentially connected, and the third wall 14 and the fourth wall 15 are both located between the sound outlet 11 and the second wall 13. In the X-direction, the length of the sound outlet 11 may be greater than the length of the second wall 13 to facilitate sound output from the sound outlet 11.

[0145] Exemplarily, the second wall 13 is disposed opposite the first wall 12, and the third wall 14 is connected between the first wall 12 and the second wall 13; the connecting hole 106 is disposed corresponding to the junction of the second wall 13 and the third wall 14, and the avoidance zone 108 is located between the first wall 12 and the second wall 13. In this example, by providing the structure of the sound output channel 1, it is convenient to utilize the space around the avoidance zone 108, which is conducive to increasing the volume of the sound output channel 1. In addition, the speaker module 20 is arranged in a plane formed by the length and width directions of the electronic device 100 (see Figure 4) relative to the avoidance zone 108, which is convenient for saving thickness space of the electronic device 100, thereby facilitating the thinning of the electronic device 100.

[0146] It can be understood that the first wall 12 can be partially formed by the first side wall 1051 (see Figure 4), the second wall 13 can be partially formed by the second side wall 1052 (see Figure 4), and the third wall 14 can be partially formed by the third side wall 1053 (see Figure 4).

[0147] The sound inlet channel 2 can be roughly rectangular columnar, and the sound outlet channel 1 can be roughly thin plate-shaped. The sound inlet channel 2 and the sound outlet channel 1 are connected at a connecting hole 106, which can be located at the connection between the second wall 13 and the third wall 14.

[0148] Among them, the middle part of the sound outlet channel 1 is provided with an avoidance area 108 and a guide portion 109. The sound outlet channel 1 surrounds the avoidance area 108. The guide portion 109 is located between the connecting hole 106 and the avoidance area 108. The guide portion 109 is used for diversion. The guide portion 109 and the avoidance area 108 do not form a cavity, that is, the guide portion 109 and the avoidance area 108 are not used for air flow. It can be understood that in the direction perpendicular to the thickness of the electronic device 100 (Z direction), the area of ​​the guide portion 109 is smaller than the area of ​​the avoidance area 108. The area of ​​the guide portion 109 cannot be too large to avoid making the area of ​​the sound outlet channel 1 too small and affecting the sound quality.

[0149] The air guide portion 109 can smoothly transition with the avoidance zone 108. For example, the air guide portion 109 can further include a first surface 1092 and a second surface 1093, the first surface 1092 and the second surface 1093 being arranged at an angle, and the first surface 1092 and the second surface 1093 being smoothly connected to the avoidance zone 108. The first surface 1092, the air guide surface 1091, and the second surface 1093 can be sequentially connected and smoothly transitioned to facilitate the air flow of the air guide portion 109.

[0150] The narrow airflow area 16 may be formed around the avoidance area 108. For example, the narrow airflow area 16 may be formed between the avoidance area 108 and the sound outlet 11. Since the air guide 109 is located between the communication hole 106 and the avoidance area 108, the air guide 109 can guide the airflow. Before the air flows through the narrow airflow area 16, the air guide 109 can slightly change the flow direction of the air, reducing the amount of air flowing into the narrow airflow area 16, thereby reducing the air flow rate in the narrow airflow area 16 and reducing noise.

[0151] In some other embodiments, the second wall 13 and the fourth wall 15 of the sound outlet channel 1 can form an arc surface. For example, the arc surface can correspond to the shape of the outer periphery of the avoidance area 108. The specific setting can be based on demand and is not strictly limited in this embodiment.

[0152] Please refer to Figure 10, which is a schematic diagram of the audio input channel 2 and the audio output channel 1 of the electronic device 100 shown in Figure 7 in other embodiments. The audio input channel 2 and the audio output channel 1 shown in the embodiment of Figure 10 can include most of the technical features of the audio input channel 2 and the audio output channel 1 shown in the embodiment of Figure 8. The following mainly describes the differences between the two, and the majority of the technical content shared by the two is not repeated.

[0153] The main difference between the sound inlet channel 2 and the sound outlet channel 1 in the embodiment of FIG. 10 and the sound inlet channel 2 and the sound outlet channel 1 in the embodiment of FIG. 8 lies in the shape of the air guide portion 109 .

[0154] In some embodiments, the guide surface 1091 of the guide portion 109 may be substantially planar.

[0155] For example, the first surface 1092, the flow guiding surface 1091, and the second surface 1093 of the flow guiding portion 109 are sequentially connected. The first surface 1092 and the second surface 1093 can be arranged opposite each other and arranged along the Y direction. The flow guiding surface 1091 can be arranged parallel to the second wall surface 13, and the first surface 1092 and the second surface 1093 can be arranged parallel to each other. The flow guiding surface 1091 and the first surface 1092 can be connected by the arc surface to facilitate the drainage of the flow guiding surface 1091.

[0156] The position of the guide portion 109 and its connection with other components can be referred to the relevant description in the embodiment of FIG8 , which will not be repeated in this embodiment.

[0157] Please refer to Figures 10 to 12. Figure 11 is a simulated diagram of the air flow rate in the sound inlet channel 2 and the sound outlet channel 1 of the electronic device 100 shown in Figure 10, and Figure 12 is a comparison diagram of the simulation diagram shown in Figure 11. The simulation diagram in Figure 12 is a simulation of the structure of the embodiment of Figure 10 without the air guide 109. The other simulation conditions in Figure 12 are the same as those in Figure 11.

[0158] In Figures 11 and 12, the red areas are areas with higher flow velocities, and the blue areas are areas with lower flow velocities.

[0159] It can be seen that the highest flow velocity in Figure 12 corresponds to the side of the avoidance area 108 and is close to the sound outlet 11, with a maximum flow velocity of 58.2 m / s. The highest flow velocity in Figure 11 corresponds to the position between the guide portion 109 and the sound outlet 11 in Figure 10, with a maximum flow velocity of 48.1 m / s. Therefore, by providing the guide portion 109, the air can be diverted when the air vibrates, thereby reducing the maximum flow velocity in the sound outlet channel 1, thereby reducing the generation of noise, and thus improving the sound quality of the electronic device 100 (see Figure 7). It can be understood that the provision of the guide portion 109 may slightly increase the flow velocity in some areas of the sound outlet channel 1, but the increase in the flow velocity in this area will not generate noise. The impact of these areas with slightly increased flow velocity on the sound quality is small, and the maximum flow velocity in the entire sound outlet channel 1 is greatly reduced, so the overall noise reduction effect is better.

[0160] Please refer to Figure 13, which is a schematic diagram of the structure of the middle frame 10 of the electronic device 100 shown in Figure 3 in other embodiments. The middle frame 10 shown in the embodiment of Figure 13 can include most of the technical features of the middle frame 10 shown in the embodiment of Figure 4. The following mainly describes the differences between the two, and most of the technical content that is shared between the two is not repeated.

[0161] The main difference between the middle frame 10 shown in the embodiment of FIG. 13 and the middle frame 10 shown in the embodiment of FIG. 4 lies in the arrangement of the air guide portion 109 .

[0162] In some embodiments, the guide portion 109 can be located at the edge of the communication hole 106. For example, the guide portion 109 can be flush with the sidewall of the communication hole 106; or the guide portion 109 can be spaced apart from the communication hole 106, with the spacing between the guide portion 109 and the communication hole 106 being smaller than the spacing between the guide portion 109 and the avoidance zone 108. In this case, the guide portion 109 can guide the air at the communication hole 106, allowing the air to be guided at the beginning of the sound outlet channel 1, making it easier to change the air flow direction.

[0163] Exemplarily, the guide portion 109 may include a plurality of guide columns 1094, and the plurality of guide columns 1094 are arranged at intervals, and the spacing between at least two adjacent guide columns 1094 is smaller than the spacing between other adjacent guide columns 1094, and the spacing between at least some of the guide columns 1094 on the side close to the avoidance area 108 is smaller than the spacing between at least some of the guide columns 1094 on the side away from the avoidance area 108.

[0164] For example, a plurality of guide columns 1094 can be arranged in sequence along the edge of the connecting hole 106. Some of the guide columns 1094 are located between the connecting hole 106 and the sound outlet 11, and the gaps between these guide columns 1094 can be set to be larger to reduce the air flow resistance. Another portion of the guide columns 1094 is located between the connecting hole 106 and the avoidance area 108, and the gaps between these guide columns 1094 can be set to be smaller to avoid more air flowing toward the avoidance area 108 and generating noise. In addition, the spacing between the plurality of guide columns 1094 near the second side wall 1052 and the spacing between the guide columns 1094 and the second side wall 1052 can be set to be larger to facilitate the flow of air in the channel between the second side wall 1052 and the avoidance area 108.

[0165] In this example, by providing a plurality of guide columns 1094 and setting the spacing between the guide columns 1094 , it is convenient to guide the flow direction of the air more finely according to the shape of the sound outlet channel 1 , thereby reducing the generation of noise.

[0166] For other structures of the middle frame 10 , reference may be made to the relevant descriptions of the embodiments shown in FIG. 4 to FIG. 9 , which will not be described in detail in this embodiment.

[0167] Please refer to Figure 14, which is a schematic diagram of the structure of the middle frame 10 of the electronic device 100 shown in Figure 3 in further embodiments. The middle frame 10 shown in the embodiment of Figure 14 can include most of the technical features of the middle frame 10 shown in the embodiment of Figure 13. The following mainly describes the differences between the two, and most of the common technical content is not repeated.

[0168] The main difference between the middle frame 10 shown in the embodiment of FIG. 13 and the middle frame 10 shown in the embodiment of FIG. 4 lies in the arrangement of the air guide portion 109 .

[0169] In some embodiments, the air guide 109 can be a mesh fixed to the middle frame 10. The mesh has a plurality of mesh holes 1095, and the apertures of the mesh holes 1095 are non-uniformly arranged. The apertures of at least some of the mesh holes 1095 on the side of the mesh close to the avoidance zone 108 are smaller than the apertures of at least some of the mesh holes 1095 on the side of the mesh away from the avoidance zone 108.

[0170] Exemplarily, the middle frame 10 may be provided with a plurality of mounting posts 1096 , which are located around the communicating hole 106 , and the mesh guide portion 109 may be bonded to the mounting posts 1096 , thereby fixing the guide portion 109 .

[0171] For example, the mesh holes 1095 of the portion of the air guide 109 facing the sound outlet 11 can be larger to reduce air flow resistance. The gaps in the portion of the air guide 109 facing the escape zone 108 can be smaller to prevent excessive air from flowing toward the escape zone 108 and generating noise. Furthermore, the mesh holes 1095 of the portion of the air guide 109 near the second side wall 1052 can be larger to facilitate air flow between the second side wall 1052 and the escape zone 108.

[0172] In this example, by setting the guide part 109 to a mesh and providing the mesh 1095 with non-uniform apertures in the guide part 109, the flow direction of the air can be guided more finely according to the shape of the sound outlet channel 1, thereby reducing the generation of noise.

[0173] For other structures of the middle frame 10 , reference may be made to the relevant descriptions of the embodiments shown in FIG. 4 to FIG. 9 , which will not be described in detail in this embodiment.

[0174] The embodiment of the present application also provides a middle frame.

[0175] In some embodiments, the middle frame is provided with a first mounting slot and a second mounting slot, and the first mounting slot and the second mounting slot are located on opposite sides of the middle frame; the first mounting slot is used to install the display screen, and the second mounting slot is used to install the speaker module; the middle frame also has a sound outlet slot and a connecting hole, and the sound outlet slot is used to form a sound outlet channel with the display screen, and the connecting hole passes through the middle frame and is connected to the sound outlet slot; the middle frame also has a mounting hole and a guide portion, and the mounting hole passes through the middle frame and is surrounded by the sound outlet slot, and the guide portion is protruded from the bottom wall of the sound outlet slot and is located between the connecting hole and the mounting hole.

[0176] In this embodiment, when the middle frame is used in an electronic device, the air guide portion is used to guide air, and the sound outlet groove is used to form a sound outlet channel with the display screen. By providing the air guide portion, it guides the air in the sound outlet channel to reduce the maximum flow rate of air in the sound outlet channel, thereby reducing the generation of noise, which is beneficial to improving the sound quality of the electronic device when it is sounded, thereby improving the sound quality of the electronic device, and does not affect other structures of the electronic device. In other words, it is beneficial to the miniaturization design of the electronic device and improves the user experience.

[0177] In some embodiments, the guide portion is a boss, and the surface of the guide portion facing the communication hole is a curved surface. In this case, the structure of the guide portion facilitates the guide portion to directly guide the movement of air. The curved guide surface can also reduce eddy currents during air flow and reduce the generation of noise.

[0178] In some embodiments, the middle frame further includes a drainage portion, which is a boss. The drainage portion is protruding from the boss surface of the drainage portion, and the surface of the drainage portion facing the communication hole is closer to the mounting hole than the surface of the drainage portion facing the communication hole. In this case, the drainage portion is provided to assist in drainage, thereby reducing the maximum flow velocity of air in the sound outlet channel, thereby reducing the generation of noise.

[0179] In some embodiments, the structure of the middle frame may be similar to the structure of the middle frame in the embodiments of Figures 1 to 14, and the structure of the middle frame will not be described in detail in this embodiment.

[0180] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0181] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0182] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electronic device, characterized in that: The device comprises a middle frame, a display screen, and a speaker module. The display screen is mounted on one side of the middle frame, a sound outlet channel is formed between the display screen and the middle frame, the middle frame has a communication hole, the communication hole is connected to the sound outlet channel, and the speaker module is mounted on a side of the middle frame facing away from the display screen. Sound emitted by the speaker module enters the sound outlet channel through the communication hole. The electronic device comprises an avoidance area and a guide portion, wherein the guide portion is located between the communication hole and the avoidance area.

2. The electronic device according to claim 1, wherein The sound outlet channel has a first wall surface, a second wall surface, and a third wall surface, wherein the second wall surface is arranged opposite to the first wall surface, and the third wall surface is connected between the first wall surface and the second wall surface; The communicating hole is provided corresponding to the connecting position of the second wall surface and the third wall surface, and the avoiding area is located between the first wall surface and the second wall surface; The sound outlet channel further has a sound outlet, and the sound outlet is at least partially located on the first wall surface.

3. The electronic device according to claim 1, wherein The guide portion is a boss, and a surface of the guide portion facing the communicating hole is a curved surface.

4. The electronic device according to claim 3, wherein: The electronic device further includes a drainage portion, which is a boss. The guide portion is protruding from the boss surface of the drainage portion. The surface of the guide portion facing the connecting hole is closer to the avoidance area than the surface of the drainage portion facing the connecting hole.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The guide portion is arranged in close contact with the avoidance area.

6. The electronic device according to any one of claims 1 to 4, characterized in that: The guide portion is located at the edge of the communicating hole.

7. The electronic device according to claim 6, wherein: The guide portion includes a plurality of guide columns, which are arranged at intervals. The spacing between at least some of the guide columns on the side close to the avoidance area is smaller than the spacing between at least some of the guide columns on the side away from the avoidance area.

8. The electronic device according to claim 7, wherein: The guide part is a mesh, which is fixed to the middle frame. The apertures of the multiple mesh holes of the mesh are unevenly set, and the apertures of at least some of the mesh holes on the side of the mesh close to the avoidance area are smaller than the apertures of at least some of the mesh holes on the side of the mesh away from the avoidance area.

9. The electronic device according to any one of claims 1 to 4, characterized in that: The sound outlet channel also has a sound outlet, which is formed by the gap between the edge of the middle frame and the edge of the display screen, and the aspect ratio of the sound outlet is greater than or equal to 10.

10. The electronic device according to any one of claims 1 to 4, characterized in that: The air guide portion and the middle frame are integrally formed structural components.

11. The electronic device according to any one of claims 1 to 4, characterized in that: The speaker module has a diaphragm, and the diaphragm is arranged toward the communication hole.

12. The electronic device according to claim 11, wherein: The area of ​​the communication hole is greater than or equal to one eighth of the area of ​​the diaphragm.

13. The electronic device according to claim 11, wherein: A sound inlet channel is formed between the diaphragm and the middle frame, and the sound inlet channel is connected to the sound outlet channel through the communication hole.

14. The electronic device according to any one of claims 1 to 4, characterized in that: The electronic device further includes a front camera, at least a portion of which is installed in the avoidance area; and / or the sound output channel is arranged around the avoidance area.

15. A middle frame, characterized in that: The middle frame is provided with a first mounting slot and a second mounting slot, the first mounting slot and the second mounting slot being located on opposite sides of the middle frame; the first mounting slot is used to mount the display screen, and the second mounting slot is used to mount the speaker module; The middle frame further has a sound outlet slot and a communication hole, wherein the sound outlet slot is used to form a sound outlet channel with the display screen, and the communication hole passes through the middle frame and is connected to the sound outlet slot; The middle frame further has a mounting hole and a guide portion. The mounting hole passes through the middle frame and is surrounded by the sound outlet groove. The guide portion is protruded from the bottom wall of the sound outlet groove and is located between the communicating hole and the mounting hole.

16. The middle frame according to claim 15, characterized in that: The guide portion is a boss, and a surface of the guide portion facing the communicating hole is a curved surface.

17. The middle frame according to claim 15 or 16, characterized in that: The middle frame further includes a drainage portion, which is a boss. The drainage portion is protruding from the boss surface of the drainage portion. The surface of the drainage portion facing the connecting hole is closer to the mounting hole than the surface of the drainage portion facing the connecting hole.

Images