Electronic equipment and middle frame

Abstract

The utility model relates to the technical field of audio, in particular to electronic equipment and a middle frame. The electronic equipment comprises a middle frame, a display screen and a loudspeaker module, the display screen is installed on one side of the middle frame, a sound outlet channel is formed between the display screen and the middle frame, the middle frame is provided with a communicating hole, the communicating hole is communicated with the sound outlet channel, the loudspeaker module is installed on the side, opposite to the display screen, of the middle frame, and sound emitted by the loudspeaker module enters the sound outlet channel through the communicating hole; the electronic equipment is provided with an avoiding area and a flow guide part, and the flow guide part is located between the communicating hole and the avoiding area. According to the electronic equipment, the flow guide part is arranged and is used for guiding flow, so that the flow guide part guides air in the sound outlet channel to reduce the maximum flow speed of the air in the sound outlet channel, noise is reduced, the sound quality of the electronic equipment is improved, other structures of the electronic equipment cannot be influenced, and the miniaturization design of the electronic equipment is facilitated; and the use experience of the user is improved.

Description

Technical Field

[0001] The present application relates to the field of audio technology, and in particular to an electronic device and a middle frame. Background Art

[0002] Micro speakers are generally used in electronic products such as mobile phones and tablets to produce sound, and airflow noise has always been a common problem with micro speakers. Especially when playing piano sounds, the impact of the airflow in the front cavity will produce a "sizzling" noise, which reduces the user experience. Traditional methods often reduce noise by increasing the sound output area, but the sound output area is easily limited by the size and structure of the electronic device, and the speaker still cannot fully meet the requirements of reducing noise. Therefore, it is difficult for existing technologies to take into account both the miniaturization of electronic equipment and the high sound quality requirements. Utility Model Content

[0003] 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.

[0004] 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, a sound output channel is formed between the display screen and the middle frame, the middle frame has a connecting hole, the connecting hole is connected to the sound output channel, the speaker module is installed on a 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.

[0005] Exemplarily, 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 generate 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 eddy currents are easy to be generated, thereby generating noise.

[0006] When the diaphragm vibrates, the air in the sound inlet channel and the sound outlet channel 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 reduce 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.

[0007] In this embodiment, a guide portion is provided, which is used for guiding air so that the guide portion 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 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.

[0008] 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.

[0009] In this embodiment, by setting 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 modules are 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.

[0010] In some embodiments, the guide portion is a boss, and a surface of the guide portion facing the connecting hole is a curved surface.

[0011] In this embodiment, the structure of the guide part is set to facilitate the guide part to directly guide the movement of air, and the guide surface is a curved surface which can also reduce eddy currents during air flow and reduce the generation of noise.

[0012] In some embodiments, the electronic device further includes a drainage portion, which is a boss, and the drainage portion is protruded 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 than the surface of the drainage portion facing the connecting hole.

[0013] 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.

[0014] In some embodiments, the guide portion is disposed in close contact with the avoidance area.

[0015] In this embodiment, since the guide part and the avoidance area are arranged in close contact with each other, there is no gap between them, 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.

[0016] In some embodiments, the guide portion is located at an edge of the communicating hole.

[0017] In this embodiment, the guide portion can guide the air at the connecting 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.

[0018] 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.

[0019] In this embodiment, by providing a plurality of guide columns and setting the intervals 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.

[0020] In some embodiments, the guide portion is a mesh, which is fixed to the middle frame. The aperture size of the mesh holes is unevenly set, and the aperture size of at least some of the mesh holes on the side of the mesh close to the avoidance zone is smaller than the aperture size of at least some of the mesh holes on the side of the mesh away from the avoidance zone.

[0021] Exemplarily, the middle frame may be provided with a plurality of mounting posts, and the plurality of mounting posts are located around the connecting hole, and the mesh cloth and the air guide portion may be bonded to the mounting posts, thereby achieving fixation of the air guide portion.

[0022] In this embodiment, by setting the guide part to be a mesh cloth 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.

[0023] 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 a length-to-width ratio of the sound outlet is greater than or equal to 10.

[0024] In this embodiment, the sound outlet is relatively simple to form, which has little impact on the structure of the display screen and the middle frame, which is conducive to simplifying the manufacturing process and improving the structural strength of the electronic device. In addition, the sound outlet has a large aspect ratio, which is conducive to increasing the sound outlet area of ​​the sound outlet, thereby reducing noise.

[0025] In some embodiments, the air guide portion and the middle frame are integrally formed structural members.

[0026] In this embodiment, the air guide part and the middle frame are integrally formed as a structural member, so that the air guide part can be formed when the middle frame is manufactured, thereby improving the connection reliability of the air guide part and simplifying the assembly of the electronic device.

[0027] In this embodiment, the speaker module has a diaphragm, and the diaphragm is arranged toward the communication hole.

[0028] 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.

[0029] In some embodiments, the area of ​​the communication hole is greater than or equal to one eighth of the area of ​​the diaphragm.

[0030] Exemplarily, the area of ​​the communication hole may be one quarter of the area of ​​the diaphragm of the speaker module.

[0031] 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 for fixing the speaker module.

[0032] In some embodiments, a sound input channel is formed between the diaphragm and the middle frame, and the sound input channel is connected to the sound output channel through a connecting hole.

[0033] 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 beneficial for making the front cavity of the speaker module have a larger volume, thereby reducing the impact on the sound quality of the electronic device.

[0034] In some embodiments, the electronic device further includes a front camera, and at least a portion of the structure of the front camera is installed in the avoidance area; and / or the sound output channel is arranged around the avoidance area.

[0035] In this embodiment, since the sound outlet channel surrounds the avoidance area, the space around the avoidance area is utilized so that the sound outlet channel has a larger area, which is equivalent to making the speaker module have a larger front cavity, thereby reducing the flow rate of air in the front cavity, which is beneficial to reducing the noise of the electronic equipment when the speaker module makes sound.

[0036] In the second aspect, an embodiment of the present application provides a middle frame, which is provided with a first mounting groove and a second mounting groove, and the first mounting groove and the second mounting groove are located on two opposite sides of the middle frame; the first mounting groove is used to install a display screen, and the second mounting groove is used to install a speaker module; the middle frame also has a sound outlet groove and a connecting hole, the sound outlet groove 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 groove; the middle frame also has a mounting hole and a guide portion, the mounting hole passes through the middle frame and is surrounded by the sound outlet groove, and the guide portion is protruding from the bottom wall of the sound outlet groove and is located between the connecting hole and the mounting hole.

[0037] In this embodiment, when the middle frame is used in an electronic device, the air guide is used for air drainage, and the sound outlet groove is used for forming a sound outlet channel with the display screen. By providing the air guide, the air guide guides 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 is sounded, 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 miniaturization design of the electronic device and improves the user experience.

[0038] In some embodiments, the guide portion is a boss, and a surface of the guide portion facing the connecting hole is a curved surface.

[0039] In this embodiment, the structure of the guide part facilitates the guide part to directly guide the movement of air, and the guide surface is a curved surface which can also reduce eddy currents during air flow and reduce the generation of noise.

[0040] In some embodiments, the middle frame further includes a drainage portion, which is a boss, and the drainage portion is protruded 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.

[0041] 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

[0042] 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.

[0043] Figure 1 This is a schematic diagram of the structure of a general loudspeaker;

[0044] Figure 2 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0045] Figure 3 yes Figure 2 an exploded schematic diagram of the electronic device shown;

[0046] Figure 4 yes Figure 3 A schematic diagram of a portion of the structure of the middle frame shown;

[0047] Figure 5 yes Figure 3 A schematic diagram of the structure of a part of the middle frame shown in another viewing angle;

[0048] Figure 6 is along Figure 2 A cross-sectional view of a portion of the structure cut at AA;

[0049] Figure 7 yes Figure 2 A simplified diagram of the air flow in the sound inlet and outlet channels of the electronic device shown;

[0050] Figure 8 yes Figure 7 The structural diagram of the sound input channel and the sound output channel is shown;

[0051] Fig. 9 yes Figure 8 A schematic diagram of the structure of the sound input channel and the sound output channel from another perspective;

[0052] Fig.10 yes Figure 7 Schematic diagrams of the sound input channel and the sound output channel of the electronic device shown in other embodiments;

[0053] Fig.11 for Fig.10 A simulation diagram of the air flow rate of the sound inlet and outlet channels of the electronic device shown;

[0054] Fig.12 for Fig.11 A comparison diagram of the simulation diagram shown;

[0055] Fig.13 yes Figure 3 A schematic diagram of the structure of a middle frame of the electronic device in other embodiments;

[0056] Fig.14 yes Figure 3 The middle frame of the electronic device shown is a schematic structural diagram of some further embodiments. DETAILED DESCRIPTION

[0057] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0058] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Multiple" means at least two.

[0059] 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 of 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.

[0060] In the embodiments of the present application, the limitations of the relative position relationship mentioned, such as parallel, vertical, aligned, etc. These limitations 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 vertical, 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 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 and 100 degrees.

[0061] In the embodiments of the present application, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features.

[0062] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a general speaker.

[0063] In a general speaker 1000, the speaker 1000 has a diaphragm 1001, and 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, and the rear cavity 1003 is generally not directly connected to the external environment. The diaphragm 1001 can vibrate and produce sound, and transmit it to the outside through the front cavity 1002. When the speaker 1000 is designed, the front cavity 1002 may generate a narrow airflow area, which is the place where the cross-section of the cavity changes from large to small in the sound propagation direction.

[0064] The speaker 1000 can be applied to an electronic device, and the electronic device can form a channel for the speaker 1000 to make sound. In this case, the diaphragm 1001 of the speaker 1000 can also be connected to the channel of the electronic device, and the channel of the electronic device is equivalent to the front cavity 1002 of the speaker 1000. The structure of the electronic device is generally complex, and it is easy to form a narrow airflow area in the channel, that is, a narrow airflow area is formed in the front cavity 1002.

[0065] When the diaphragm 1001 of the speaker 1000 vibrates and produces sound, the diaphragm 1001 acts like a piston, rapidly pushing air outward for radiation. When the airflow passes through the narrow airflow area of ​​the front cavity 1002 of the speaker 1000, the flow speed becomes faster and vortices are generated, causing noise in the sound emitted by the speaker 1000, affecting the sound quality. The prior art generally reduces the generation of noise by increasing the sound output area or cavity volume of the front cavity 1002.

[0066] Combined with reference Figure 2 and Figure 3, Figure 2 is a structural diagram of an electronic device 100 provided in an embodiment of the present application, Figure 3 yes Figure 2 An exploded schematic diagram of the electronic device 100 is shown.

[0067] In the embodiment of the present application, the electronic device 100 may be a device with an audio playback function, such as a mobile phone, a tablet computer, a multimedia player, a headset, a stereo, a laptop computer, a vehicle-mounted device, a foldable terminal device, a television, or a wearable device. Among them, the wearable device may be a smart bracelet, a smart watch, a smart head display, smart glasses, etc. Figure 1 The electronic device 100 of the illustrated embodiment is described by taking a mobile phone as an example. Of course, other types of electronic devices 100 may also adopt similar structures, which will not be described in detail below.

[0068] 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.

[0069] 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 a housing device of the electronic device 100.

[0070] Exemplarily, the middle frame 10 may be substantially rectangular in structure, and the shape of the middle frame 10 may be substantially the same as the shape 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 various components of the electronic device 100. The middle frame 10 may form a plurality of slots or chambers to install components of the electronic device 100.

[0071] 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 .

[0072] 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 a plastic insert, etc., which is not strictly limited in this example. In some other examples, the main material of the middle frame 10 can be plastic.

[0073] Exemplarily, the display screen 40 may be fixedly connected to one side of the middle frame 10. For example, the display screen 40 may be fixedly connected to the middle frame 10 by bonding, snapping, or the like.

[0074] 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 .

[0075] 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 an active-matrix organic light emitting diode (AMOLED) display screen 40, a mini light emitting diode (MINI) display screen 40, a micro light emitting diode (MICRO) display screen 40, a micro organic light emitting diode (MICRO) display screen 40, a quantum dot light emitting diode (QLED) display screen 40, a liquid crystal display 40 (LCD), etc.

[0076] The display screen 40 may be a flat screen, and the area of ​​the display screen 40 may occupy most of the area of ​​the middle frame 10 to provide a better display effect. In some other embodiments, the display screen 40 may be a curved screen, a folding screen, or a flexible screen, which may be specifically configured according to the requirements of the electronic device 100, and is not strictly limited in this embodiment.

[0077] Exemplarily, the speaker module 20 may be located inside the electronic device 100 .

[0078] The speaker module 20 may be located on the top side of the electronic device 100. The speaker module 20 may be fixedly mounted on the middle frame 10. The electronic device 100 may have a sound outlet channel 1, which is connected to the external environment through a sound outlet 11, and the speaker module 20 transmits sound to the external environment through the sound outlet channel 1. The sound outlet 11 may be located at the end of the top side of the electronic device 100 to facilitate the opening of the sound outlet 11. Figure 1 As shown, the arrow is the general direction of sound propagation, that is, the general direction of air flow. 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.

[0079] Among them, the speaker module 20 may have a diaphragm 201. The speaker module 20 can be powered on and drive the diaphragm 201 to make a sound. When the speaker module 20 is connected to alternating current with different characteristics (such as frequency, voltage), the diaphragm 201 can make a sound at a corresponding frequency and loudness, thereby making a desired sound. For example, the diaphragm 201 may be exposed relative to the speaker module 20 to facilitate the sound of the speaker module 20. It is understandable that the diaphragm 201 can be connected to the sound outlet channel 1 so that the diaphragm 201 can vibrate the air in the sound outlet channel 1 to make a sound.

[0080] Exemplarily, the cover plate 30 may be fixedly connected to the side of the middle frame 10 facing away from the display screen 40. For example, the cover plate 30 may be fixedly connected to the middle frame 10 by bonding, clamping, or the like.

[0081] The middle frame 10 may be provided with an installation groove (not shown), and the cover plate 30 may be installed in the installation groove. The cover plate 30 closes the side of the middle frame 10 connected thereto, thereby protecting the components between the cover plate 30 and the middle frame 10. The cover plate 30 may be sealedly connected to the middle frame 10 to prevent impurities such as water and dust outside the electronic device 100 from entering the inside of the electronic device 100, thereby achieving waterproof and dustproof properties of the electronic device 100.

[0082] 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 .

[0083] The material of the cover plate 30 may be glass, ceramic, metal, etc., which is not strictly limited in this embodiment.

[0084] 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 .

[0085] 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 .

[0086] The front camera 50 may have a light-intake sheet 501, which is used to receive light for imaging. A light-transmitting hole 401 may be provided on the top of the display screen 40, and the light-transmitting hole 401 may be arranged corresponding to the light-intake sheet 501 of the front camera 50, so that external light passes through the light-transmitting hole 401 and enters the front camera 50 through the light-intake sheet 501.

[0087] It is understandable that the number of the front cameras 50 may be one or more. For example, the number of the front cameras 50 may be 2 or 3, and in this case, the number of the light-transmitting holes 401 may be set to 2 or 3 accordingly.

[0088] 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.

[0089] In some embodiments, the electronic device 100 may further include a speaker 60 located on the bottom side. A sound outlet may be provided on the bottom side of the electronic device 100, and the sound outlet may be located on one side of the bottom side of the electronic device 100, and the speaker 60 emits sound through the sound outlet. The speaker module 20 on the top side and the speaker 60 on the bottom side may emit sound at the same time, and stereo sound may be formed at this time. 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.

[0090] 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 with the display screen 40, the speaker module 20, and the front camera 50, etc., so that the circuit board assembly controls the three. The structure of the circuit board assembly is not strictly limited in this embodiment.

[0091] 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., and the embodiment of the present application does not specifically limit the number, type, position, etc. of the modules of the electronic device 100.

[0092] Please refer to Figures 3 to 5 , Figure 4 yes Figure 3 The schematic diagram of the partial structure of the middle frame 10 is shown. Figure 5 yes Figure 3 The structure diagram of the part of the middle frame 10 shown in another perspective. Figure 5 Relative perspective Figure 4 The perspective has been flipped.

[0093] In some embodiments, the middle frame 10 may include a frame 101 and a middle plate 102 .

[0094] The middle plate 102 and the frame 101 may be an integrated structural member. In some examples, the middle plate 102 and the frame 101 may be integrally formed, but are not limited thereto. For example, the middle plate 102 and the frame 101 may have disassembled parts, which may be assembled to form a part of the middle plate 102 or the frame 101.

[0095] 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, 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-out area, thereby reducing the thickness of the electronic device 100, which is conducive to the thin design of the electronic device 100.

[0096] In some embodiments, the middle frame 10 may be provided with a first mounting groove 103 and a second mounting groove 104 .

[0097] The first mounting groove 103 and the second mounting groove 104 may 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.

[0098] The first mounting groove 103 can be used to mount the display screen 40 . The first mounting groove 103 has a relatively large space. The first mounting groove 103 can be formed in the frame 101 .

[0099] The second mounting groove 104 can be used to mount the speaker module 20. The second mounting groove 104 occupies a small space and can be formed in the middle plate 102. For example, the middle plate 102 has a plurality of protruding portions 1041, and the number of the protruding portions 1041 can be multiple. The multiple protruding portions 1041 surround a slot space to form the second mounting groove 104. The speaker module 20 can be placed in the second mounting groove 104, and the main structure of the speaker module 20 can be fixed on the multiple protruding portions 1041, so as to fix the speaker module 20 to the middle frame 10. In some other embodiments, the second mounting groove 104 can be surrounded by a continuous baffle structure.

[0100] In some embodiments, the middle frame 10 may be provided with a sound outlet groove 105. The sound outlet groove 105 may be provided on the side of the middle frame 10 facing away from the second mounting groove 104, and the sound outlet groove 105 may be located on the top side of the middle frame 10 and extend to the frame 101. Part of the sound outlet groove 105 may be recessed relative to the board surface of the middle plate 102. In the direction perpendicular to the board surface of the middle plate 102 (i.e., the Z direction), part of the sound outlet groove 105 may overlap part of the second mounting groove 104.

[0101] 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 .

[0102] 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 communicates with spaces on both sides of the middle plate 102 .

[0103] The communicating hole 106 can communicate with the second installation slot 104 and the sound outlet slot 105. At this time, the second installation slot 104 and the sound outlet slot 105 can form a communicating space.

[0104] In some embodiments, the middle frame 10 may further be provided with a third mounting groove 107. The third mounting groove 107 may be located on the side of the middle frame 10 facing the cover plate 30, that is, the third mounting groove 107 and the second mounting groove 104 are located on the same side of the middle frame 10. The third mounting groove 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.

[0105] The third mounting groove 107 may be roughly rectangular in structure, and the third mounting groove 107 may be formed in the middle plate 102. In the Z direction, the third mounting groove 107 and the sound outlet groove 105 may overlap. For example, on the side of the middle plate 102 having the second mounting groove 104, the third mounting groove 107 may be formed by the concave portion of the middle plate 102. At this time, on the other side of the middle plate 102, the bottom wall of the third mounting groove 107 may 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 wall of the third mounting groove 107 is equivalent to being used to form the sound outlet groove 105.

[0106] 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 communicate with the spaces on both sides of the middle plate 102. The mounting hole 1071 may be a circular hole.

[0107] In addition, on the side of the middle frame 10 having 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 roughly a circular area, and 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 may 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.

[0108] Among them, the third installation slot 107 can be used to install the front camera 50. At this time, most of the structure of the front camera 50 can be installed in the slot of the third installation slot 107, and the installation hole 1071 can be used to install part of the structure at the light intake sheet 501 of the front camera 50, so that light can enter the light intake sheet 501 of the front camera 50. The avoidance area 108 can be used to accommodate part of the structure of the front camera 50, and the avoidance area 108 can also be used to accommodate a fixing or a sealing member for fixing the front camera 50.

[0109] In some embodiments, the middle frame 10 may further include a guide portion 109 , that is, the electronic device 100 includes a guide portion 109 . The guide portion 109 is located on a side of the middle frame 10 having the sound outlet slot 105 , and the guide portion 109 may be located inside the sound outlet slot 105 .

[0110] Exemplarily, 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.

[0111] The guide portion 109 may be a boss structure, the surface of the guide portion 109 facing the connecting hole 106 is a guide surface 1091 , and the guide surface 1091 may be a curved surface, for example, a circular arc surface.

[0112] Exemplarily, the air guide 109 may be a roughly triangular columnar structure, and the air guide 109 may be formed by a partial structure of the middle plate 102. At this time, the air guide 109 and the middle frame 10 are integrally formed structural parts, so that the air guide 109 is 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.

[0113] 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.

[0114] 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 .

[0115] Exemplarily, the drainage portion 1010 may be a boss structure. In this case, the drainage portion 109 is convexly arranged on 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 relative to the surface of the drainage portion 1010 facing the connecting hole 106. Among them, the surface of the drainage portion 1010 facing the connecting hole 106 is the drainage surface 1011, that is, the drainage surface 1091 is retracted relative to the drainage surface 1011 toward the avoidance area 108. In some other examples, the electronic device 100 may not include the drainage portion 1010.

[0116] In some other embodiments, a gap may be left between the air guide portion 109 and the avoidance area 108 .

[0117] Please refer to Figures 4 to 6 , Figure 6 is along Figure 2 A cross-sectional view of a portion of the structure cut at AA.

[0118] In some embodiments, the display screen 40 can be installed in the first installation slot 103, and a sound outlet channel 1 is formed between the display screen 40 and the middle frame 10. The speaker module 20 can be installed in the second installation slot 104, and a sound inlet channel 2 can be formed between the speaker module 20 and the middle frame 10. The sound inlet channel 2 and the sound outlet channel 1 can be connected through the connecting hole 106 to form a complete cavity space. At this time, the sound inlet channel 2 and the sound outlet channel 1 are equivalent to the front cavity of the speaker module 20, which is conducive to making the front cavity of the speaker module 20 have a larger volume, thereby reducing the impact on the sound quality of the electronic device 100.

[0119] Exemplarily, the speaker module 20 may include a diaphragm 201, a basin 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 basin frame 202, the diaphragm 201 and the magnetic circuit assembly are arranged relative to each other, the magnetic circuit assembly may have a magnetic gap, one end of the voice coil is fixed to the diaphragm 201, and the other end is located in the magnetic gap of the magnetic circuit assembly. When the voice coil is energized, the voice coil generates an interaction force with the magnetic circuit assembly, and the voice coil is driven. Since the voice coil is fixedly connected to the diaphragm 201, the voice coil drives the diaphragm 201 to vibrate, thereby producing sound.

[0120] 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.

[0121] Among them, the diaphragm 201 can be arranged toward the middle plate 102, and the 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 conducive to improving the sound quality of the electronic device 100.

[0122] It can be understood that the speaker module 20 and the first mounting groove 103 can be sealed and connected to form the structure of the sound inlet channel 2, so that the sound inlet channel 2 forms a relatively closed cavity, and the sound enters the sound outlet channel 1 from the connecting hole 106, avoiding sound leakage and affecting the sound quality.

[0123] Exemplarily, part of the structure of the display screen 40 is arranged opposite to the sound outlet slot 105, and a gap is left between the display screen 40 and the sound outlet slot 105. The part of the structure of the display screen 40 arranged opposite to the sound outlet slot 105 can form a sound outlet channel 1 with the sound outlet slot 105. In addition, other parts of the structure of the display screen 40 can contact with the middle frame 10 and be fixedly connected with the middle frame 10, so that the display screen 40 is fixed in the first mounting slot 103 of the middle frame 10. For example, the side of the display screen 40 facing the middle frame 10 can be glued or glued, so that the display screen 40 is fixedly connected with the middle frame 10.

[0124] Among them, since the sound outlet groove 105 is arranged around the avoidance area 108, the sound outlet channel 1 is arranged around the avoidance area 108. At this time, the sound outlet channel 1 has a larger area in the plane formed by the X direction and the Y direction, which is equivalent to making the speaker module 20 have a larger front cavity, which can reduce the flow rate of air flowing in the front cavity, which is beneficial to reduce the noise of the electronic device 100 when the speaker module 20 makes sound.

[0125] 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.

[0126] 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 .

[0127] Exemplarily, the first wall 12, the guide portion 109 and the second wall 13 can be arranged along the 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.

[0128] 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, and has little impact on the structure of the display screen 40 and the middle frame 10, which is conducive to simplifying the manufacturing process and improving the structural strength of the electronic device 100. In some other embodiments, the sound outlet 11 can be formed by digging a hole in the frame 101 of the middle frame 10, or the sound outlet 11 can also be formed by digging a hole at the top of the screen.

[0129] The length-to-width ratio of the sound outlet 11 may be greater than or equal to 10. In this case, the sound outlet 11 has a larger length-to-width ratio, which is beneficial to increasing the sound outlet area of ​​the sound outlet 11, thereby reducing noise.

[0130] The guide portion 109 is used for guiding the air in the sound outlet channel 1 to avoid the generation of eddy currents and the like.

[0131] Among them, since the guide part 109 and the avoidance area 108 are arranged in close contact, 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.

[0132] It can be understood that the display screen 40 and the structure of the middle frame 10 forming the sound output channel 1 can be sealed and connected so that the sound output channel 1 forms a relatively closed cavity, and the sound entering the sound output channel 1 through the connecting hole 106 is emitted from the sound outlet 11, avoiding sound leakage and affecting the sound quality.

[0133] It is understandable that the light-transmitting hole 401 (such as Figure 6 ) can be connected with the mounting hole 1071 of the middle frame 10 (such as Figure 4 ) are arranged accordingly, for example, the two can be arranged concentrically so that the front camera 50 (such as Figure 3 In addition, the sound output channel 1 is not connected to the light-transmitting hole 401, and the sound output channel 1 is not connected to the mounting hole 1071, so that the sound output channel 1 forms a relatively closed cavity to avoid sound leakage.

[0134] 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 velocity is easily too fast or eddies are easily generated, thereby generating noise.

[0135] 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. Figure 4 and Figure 6Taking 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, since the guide part 109 is located between the avoidance area 108 and the connecting hole 106, part of the air will flow out directly from the sound outlet 11, and part of the air will first contact the guide part 109 and slightly change the direction of movement, and then flow through the avoidance area 108 and then flow out from the sound outlet 11. It can be understood that the guide part 109 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 109 can make the flow path of the air in the sound outlet channel 1 smoother, which is conducive to reducing the generation of vortices and thus reducing noise.

[0136] 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 a 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.

[0137] In some embodiments, since the guide portion 109 may be a boss structure, the surface of the guide portion 109 facing the connecting hole 106 is a curved surface. At this time, the structural setting of the guide portion 109 facilitates the guide portion 109 to directly guide the movement of the air, and the guide surface 1091 is a curved surface, which can also reduce the vortex during the air flow and reduce the generation of noise.

[0138] In some embodiments, when the electronic device 100 has a drainage portion 1010 (see Figure 4 ), the drainage portion 1010 can be used to assist in drainage to reduce the maximum flow velocity of air in the sound outlet channel 1, thereby reducing the generation of noise.

[0139] In some embodiments, the area of ​​the communication hole 106 may 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 the air from flowing too fast through the communication hole 106 and generating noise. For example, the area of ​​the communication hole 106 may be one fourth of 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 is more reliable in fixing the speaker module 20.

[0140] See also Figure 7 , Figure 7 yes Figure 2The air flow diagram of the sound inlet channel 2 and the sound outlet channel 1 of the electronic device 100 is shown. Figure 7 The flow of air from the sound outlet 11 is taken as an example for demonstration.

[0141] In some embodiments, the general air flow direction is in the sound inlet channel 2 and the sound outlet channel 1, from the speaker toward the sound outlet 11. The air in the sound inlet channel 2 will flow from the connecting hole 106 toward various places of the sound outlet channel 1 when the air is pushed by the speaker; in the sound outlet channel 1, due to the positional relationship between the connecting hole 106 and the sound outlet channel 1, the flow direction of part of the air is from the connecting hole 106 toward the left area of ​​the sound outlet 11, and due to the setting of the guide portion 109 and the avoidance area 108, the flow direction of part of the air is from the connecting hole 106 through the upper side of the guide portion 109, the upper side of the avoidance area 108 to the middle area of ​​the sound outlet 11, and the flow direction of part of the air is from the connecting hole 106 through the lower side of the guide portion 109, the lower side of the avoidance area 108, and the right side of the avoidance area 108 to the right area of ​​the sound outlet 11.

[0142] Please refer to Figure 8 and Fig. 9 , Figure 8 yes Figure 7 The structural diagram of the sound input channel 2 and the sound output channel 1 is shown. Fig. 9 yes Figure 8 The structure diagram of the sound input channel 2 and the sound output channel 1 from another perspective is shown. In order to clearly show the structure of the sound output channel 1 and the sound input channel 2, Figure 8 and Fig. 9 It is a structural diagram after materialization, and is actually a cavity in the electronic device 100; Fig. 9 yes Figure 8 The structure is shown in a flipped perspective.

[0143] 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 arranged opposite to each other and arranged along the X direction. The third wall 14, the second wall 13 and the fourth wall 15 are connected in sequence, and the third wall 14 and the third wall 14 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, so as to facilitate the sound outlet 11 to emit sound.

[0144] Exemplarily, the second wall 13 is arranged opposite to 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 arranged corresponding to the connecting position of the second wall 13 and the third wall 14, and the avoidance area 108 is located between the first wall 12 and the second wall 13. In this example, by setting the structure of the sound output channel 1, it is convenient to use the space around the avoidance area 108, which is conducive to increasing the volume of the sound output channel 1, and the speaker module 20 is relatively close to the avoidance area 108 in the electronic device 100 (see Figure 4 ) is arranged in a plane formed by the length direction and the width direction, which is convenient for saving the thickness space of the electronic device 100, thereby facilitating the thinning of the electronic device 100.

[0145] It is understood that the first wall surface 12 may be partially formed by the first side wall 1051 (see Figure 4 ), the second wall surface 13 may be partially formed by the second side wall 1052 (see Figure 4 ) is formed, the third wall 14 can be partially formed by the third side wall 1053 (see Figure 4 )form.

[0146] The sound inlet channel 2 may be roughly a rectangular column structure, and the sound outlet channel 1 may be roughly a thin plate structure. The sound inlet channel 2 and the sound outlet channel 1 are connected at the connecting hole 106, and the connecting hole 106 may be located at the connection between the second wall surface 13 and the third wall surface 14.

[0147] Among them, a avoidance area 108 and a guide portion 109 are provided in the middle of the sound outlet channel 1, 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 drainage, and 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 flowing air. 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.

[0148] The air guide 109 may smoothly transition with the avoidance area 108. For example, the air guide 109 may also have a first surface 1092 and a second surface 1093, the first surface 1092 and the second surface 1093 are arranged at an angle, and the first surface 1092 and the second surface 1093 are respectively smoothly connected with the avoidance area 108. The first surface 1092, the air guide surface 1091 and the second surface 1093 may be sequentially connected and smoothly transitioned, so as to facilitate the air guide 109 to guide the air.

[0149] 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 connecting 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, reduce the air flowing to the narrow airflow area 16, and then reduce the air flow rate in the narrow airflow area 16, thereby reducing noise.

[0150] 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 configuration can be based on the needs and is not strictly limited in this embodiment.

[0151] See also Fig.10 , Fig.10 yes Figure 7 Schematic diagrams of the sound input channel 2 and the sound output channel 1 of the electronic device 100 in other embodiments. Fig.10 The sound input channel 2 and the sound output channel 1 shown in the embodiment may include Figure 8 Most of the technical features of the sound input channel 2 and the sound output channel 1 shown in the embodiment are mainly explained below to explain the differences between the two, and most of the technical contents that are the same between the two are not repeated.

[0152] Fig.10 The sound input channel 2 and the sound output channel 1 of the embodiment are Figure 8 The main difference between the sound inlet channel 2 and the sound outlet channel 1 of the embodiment lies in the shape of the air guide portion 109 .

[0153] In some embodiments, the guide surface 1091 of the guide portion 109 may be substantially planar.

[0154] Exemplarily, the first surface 1092, the guide surface 1091 and the second surface 1093 of the guide portion 109 are connected in sequence, and the first surface 1092 and the second surface 1093 can be arranged opposite to each other and arranged along the Y direction. The guide surface 1091 can be arranged parallel to the second wall surface 13, and the first surface 1092 and the second wall surface 13 can be arranged parallel to each other. The guide surface 1091 and the first surface 1092 can be connected by the arc surface to facilitate the drainage of the guide surface 1091.

[0155] The position of the guide part 109 and its connection with other components can be referred to Figure 8 The relevant descriptions in the embodiments are not repeated in this embodiment.

[0156] Please refer to Figures 10 to 12 , Fig.11 for Fig.10 The air flow rate simulation diagram of the sound inlet channel 2 and the sound outlet channel 1 of the electronic device 100 is shown. Fig.12 for Fig.11 The comparison diagram of the simulation diagram shown. Fig.12 The simulation diagram is Fig.10 The structure simulation after removing the guide part 109 in the embodiment is formed. Fig.12 Other simulation conditions and Fig.11 The simulation conditions are the same.

[0157] Fig.11 and Fig.12 In the figure, red areas are areas with higher flow velocities, and blue areas are areas with lower flow velocities.

[0158] It can be seen that Fig.12 The highest flow velocity in the flow corresponds to the side of the avoidance area 108 and is close to the sound outlet 11, where the highest flow velocity is 58.2 m / s. Fig.11 The highest flow velocity in corresponds to Fig.10 The maximum flow velocity between the middle guide portion 109 and the sound outlet 11 is 48.1 m / s. Therefore, by providing the guide portion 109, the air can be guided when the air vibrates, thereby reducing the maximum flow velocity in the sound outlet channel 1, thereby reducing the generation of noise, thereby improving the electronic device 100 (see Figure 7 ) sound quality. It is understandable 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 such areas will not generate noise, and the areas with slightly increased flow velocity have little effect on the sound quality, and the maximum flow velocity in the entire sound outlet channel 1 is greatly reduced, thus having a better effect of reducing noise as a whole.

[0159] See also Fig.13 , Fig.13 yes Figure 3 The middle frame 10 of the electronic device 100 is shown as a schematic structural diagram in other embodiments. Fig.13 The middle frame 10 shown in the embodiment may include Figure 4 Most of the technical features of the middle frame 10 shown in the embodiment are mainly described below. The differences between the two are described below, and most of the same technical contents between the two are not repeated here.

[0160] Fig.13 The middle frame 10 shown in the embodiment Figure 4 The main difference of the middle frame 10 shown in the embodiment is the arrangement of the air guide portion 109 .

[0161] In some embodiments, the guide portion 109 may be located at the edge of the communication hole 106. For example, the guide portion 109 is flush with the side wall of the communication hole 106; or there is a distance between the guide portion 109 and the communication hole 106, and the distance between the guide portion 109 and the communication hole 106 is smaller than the distance between the guide portion 109 and the avoidance area 108. In this case, the guide portion 109 can guide the air at the communication hole 106, so that the air can be guided at the beginning of the sound outlet channel 1, and it is easier to change the flow direction of the air.

[0162] 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.

[0163] For example, a plurality of guide posts 1094 may be arranged in sequence along the edge of the connecting hole 106. Some of the guide posts 1094 are located between the connecting hole 106 and the sound outlet 11, and the gaps between these guide posts 1094 may be set larger to reduce air flow resistance. Another portion of the guide posts 1094 is located between the connecting hole 106 and the avoidance area 108, and the gaps between these guide posts 1094 may be set smaller to avoid more air flowing toward the avoidance area 108 and generating noise. In addition, the spacing between the plurality of guide posts 1094 near the second side wall 1052 and the spacing between the guide posts 1094 and the second side wall 1052 may be set larger to facilitate air flow in the channel between the second side wall 1052 and the avoidance area 108.

[0164] 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.

[0165] For other structures of the middle frame 10, please refer to Figures 4 to 9 The relevant description of the embodiment will not be repeated in this embodiment.

[0166] See also Fig.14 , Fig.14 yes Figure 3 The middle frame 10 of the electronic device 100 is shown as a schematic structural diagram in some further embodiments. Fig.14 The middle frame 10 shown in the embodiment may include Fig.13 Most of the technical features of the middle frame 10 shown in the embodiment are mainly described below. The differences between the two are described below, and most of the same technical contents between the two are not repeated here.

[0167] Fig.13 The middle frame 10 shown in the embodiment Figure 4 The main difference of the middle frame 10 shown in the embodiment is the arrangement of the air guide portion 109 .

[0168] In some embodiments, the air guide 109 may be a mesh, which is fixed to the middle frame 10. The mesh has a plurality of mesh holes 1095, and the apertures of the plurality of mesh holes 1095 of the mesh are non-uniformly arranged, and 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.

[0169] Exemplarily, the middle frame 10 may be provided with a plurality of mounting posts 1096 , and the plurality of mounting posts 1096 are located around the connecting hole 106 , and the mesh cloth guide portion 109 may be bonded to the mounting posts 1096 , thereby fixing the guide portion 109 .

[0170] For example, the mesh 1095 of the portion of the air guide 109 facing the sound outlet 11 can be set larger to reduce the air flow resistance. The gap of the portion of the air guide 109 facing the avoidance area 108 can be set smaller to avoid more air flowing toward the avoidance area 108 and generating noise. In addition, the mesh 1095 of the portion of the air guide 109 close to the second side wall 1052 can be set larger to facilitate the air flow in the channel between the second side wall 1052 and the avoidance area 108.

[0171] In this example, by setting the guide part 109 to be a mesh cloth and providing the guide part 109 with mesh holes 1095 of non-uniform apertures, 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.

[0172] For other structures of the middle frame 10, please refer to Figures 4 to 9 The relevant description of the embodiment will not be repeated in this embodiment.

[0173] The embodiment of the present application also provides a middle frame.

[0174] 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, 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, 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.

[0175] In this embodiment, when the middle frame is used in an electronic device, the air guide is used for air drainage, and the sound outlet groove is used for forming a sound outlet channel with the display screen. By providing the air guide, the air guide guides 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 is sounded, 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 miniaturization design of the electronic device and improves the user experience.

[0176] In some embodiments, the guide portion is a boss, and the surface of the guide portion facing the connecting hole is a curved surface. In this case, the structural setting of the guide portion facilitates the guide portion to directly guide the movement of air, and the curved surface of the guide surface can also reduce eddy currents during air flow and reduce the generation of noise.

[0177] In some embodiments, the middle frame further includes a drainage portion, which is a boss, and the drainage portion is convexly arranged on 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. At this time, by providing the drainage portion, the drainage portion is used to assist drainage to reduce the maximum flow velocity of the air in the sound outlet channel, thereby reducing the generation of noise.

[0178] In some embodiments, the structure of the middle frame can be Figures 1 to 14 The structure of the middle frame in the embodiment is similar, and the structure of the middle frame will not be described in detail in this embodiment.

[0179] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of the present application. In other words, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0180] It should be noted that all the above drawings are illustrative illustrations of the present application and do not represent the actual size of the product. Moreover, the size ratio relationship between the components in the drawings is not intended to limit the actual product of the present application.

[0181] The above are only some embodiments and implementation methods of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the technical scope disclosed in the present application can easily think of changes or substitutions, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

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

2. The electronic device according to claim 1, characterized in that: The sound outlet channel comprises 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 connecting hole is arranged corresponding to the connecting position of the second wall surface and the third wall surface, and the avoidance area is located between the first wall surface and the second wall surface; The sound outlet channel also 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, characterized in that: The guide portion is a boss, and a surface of the guide portion facing the connecting hole is a curved surface.

4. The electronic device according to claim 3, characterized in that: The electronic device further comprises a drainage portion, which is a boss. The drainage portion is convexly arranged on the boss surface of the drainage portion. The surface of the drainage 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, characterized in that: The guide portion includes a plurality of guide columns, which are arranged at intervals, 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.

8. The electronic device according to claim 7, characterized in that: The guide part is a mesh, which is fixed to the middle frame. The apertures of the multiple mesh holes of the mesh are non-uniformly arranged, and the apertures of at least some of the mesh holes on the side of the mesh close to the avoidance zone are smaller than the apertures of at least some of the mesh holes on the side of the mesh away from the avoidance zone.

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, and the sound outlet is formed by a gap between an edge of the middle frame and an edge of the display screen. The length-to-width 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 parts.

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, characterized in that: 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, characterized in that: 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 connecting 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 groove and a second mounting groove, and the first mounting groove and the second mounting groove are located on two opposite sides of the middle frame; the first mounting groove is used to install the display screen, and the second mounting groove is used to install the speaker module; The middle frame also has a sound outlet groove and a connecting hole, wherein the sound outlet groove 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 groove; The middle frame also 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 connecting 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 connecting 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 convexly arranged on 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.

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