CN115225746B - Electronic equipment - Google Patents

Abstract

The present application provides an electronic device, which includes a middle frame, a circuit board, a bracket, and a first speaker unit. The circuit board includes a mounting surface, and the bracket includes an avoidance groove; The bracket is recessed, the first speaker unit is positioned on the mounting surface and electrically connected to the circuit board, the circuit board and the bracket are stacked and mounted on the middle frame, and the electronic In the thickness direction of the device, the first speaker unit is accommodated in the escape groove.

Description

Electronic equipment

technical field

The present application relates to the technical field of communication equipment, and in particular to an electronic equipment.

Background technique

With the continuous development of science and technology, electronic devices such as mobile phones are widely used in people's daily life and work, and have become indispensable daily necessities for people. In the current electronic equipment, the speaker module and the camera module occupy a lot of space inside the mobile phone, especially the speaker module needs a certain space in thickness, and it is necessary to open a slot on the circuit board to avoid it, which will occupy the space of the circuit board , affecting the device layout and use of the circuit board; if the circuit board is avoided, the overall thickness of the electronic device will be increased.

Contents of the invention

The present application provides an electronic device, which reduces the occupied space of the speaker module on the circuit board and avoids increasing the thickness of the electronic device.

An electronic device provided by an embodiment of the present application includes a middle frame, a circuit board, a bracket, and a first speaker unit, the circuit board includes a mounting surface, and the bracket includes an avoidance groove; the avoidance groove is along the thickness direction of the bracket recessed into the bracket, the first speaker unit is positioned on the mounting surface and electrically connected to the circuit board, the circuit board and the bracket are stacked and mounted on the middle frame, and the In the thickness direction of the electronic equipment, the first speaker unit is accommodated in the escape groove.

In the electronic device of the embodiment of the present application, the first speaker unit is installed on the surface of the circuit board, and the first speaker unit is provided with a space in the thickness direction by providing an escape groove on the bracket, which can avoid opening holes on the circuit board and increase the number of circuits. The usage area of the board can be reduced, and the bracket can be accommodated by the decorative part space of the camera module, which can avoid increasing the thickness space of the electronic device.

In one embodiment, the electronic device includes a second speaker unit and a sound output slot, the middle frame includes a mounting slot, and the circuit board includes an avoidance hole, and the avoidance hole penetrates through the circuit board along the thickness direction of the circuit board. In the above circuit board, the installation groove runs through the middle frame along the thickness direction of the middle frame, the second speaker unit penetrates the escape hole and covers the opening of the installation groove, and the installation groove forms In the front sound chamber of the second speaker unit, the sound outlet connects the front sound chamber of the second speaker unit with the outside of the electronic device.

In an embodiment, the volume of the second speaker unit is smaller than the volume of the first speaker unit. In the external playback scene, due to the small size of the second speaker unit and the volume of the front sound cavity, the second speaker can be used as a tweeter, and the first speaker can be used as a bass unit to enhance the stereo effect.

In one embodiment, the first speaker unit is a tweeter unit or a full-range unit, and the second speaker unit is a full-range unit. In this embodiment, there are a plurality of speaker units, which can realize multi-audio effects, and the sound output gap can be used as a gap for sound output during a call. Since the human ear cannot completely fit and seal the sound output gap, the sound output gap The sound will spread outward and become sound leakage, which will affect the privacy of the call. For this problem, the first speaker unit emits sound waves that are opposite in phase to the sound slot through the speaker hole to offset the sound leakage of the sound slot and improve call privacy sex.

In one embodiment, the middle frame is provided with an end frame and a speaker hole provided on the end frame, the avoidance groove includes a groove bottom wall, and a functional groove is recessed on the groove bottom wall, and the The first speaker unit covers the functional groove, so that the functional groove forms the front sound cavity of the first speaker, and the sound hole communicates with the front sound cavity of the first speaker unit and the outside of the middle frame .

In one embodiment, the middle frame includes a protrusion, the protrusion is provided with a communication groove, the communication groove extends along the thickness direction of the middle frame, the communication groove communicates with the speaker hole, The bracket includes a sound hole, and the sound hole communicates with the front sound cavity of the first speaker unit and the communication groove. The structure of this embodiment is simple and easy to manufacture. The first speaker unit transmits the sound to the outside of the electronic device through the sound hole, the communication groove and the sound hole.

In one embodiment, the bracket includes a bracket body and a boss, the bracket body includes a first surface and a second surface opposite to the first surface, the boss is located on the second surface, The avoidance groove is recessed on the first surface;

There is also a mounting protrusion protruding from the first surface, and the sound hole includes a first sound hole, a second sound hole and a third sound hole connected in sequence, and the first sound hole is along the length of the bracket The direction runs through the groove side wall of the functional groove, the second sound hole is arranged inside the boss and the installation protrusion and extends along the thickness direction of the bracket, and the third sound hole passes through the installation The protrusion is in contact with the installation protrusion, and the third sound hole is opposite to and communicated with the communication groove. The bracket utilizes its own thickness and the mounting protrusions to set sound holes, effectively utilizing part of the structure, and saving the area of the bracket.

In one embodiment, one end of the installation protrusion has an extension part extending along the width direction of the bracket, the extension part is located at the end of the installation protrusion away from the avoidance groove, and the third sound hole is formed by the The end of the installation protrusion extends to the extension part and extends along the length direction of the extension part;

The communication groove is recessed from the upper surface of the protrusion to the inside of the protrusion, the opening of the communication groove is located on the surface of the protrusion, and the communication groove extends along the width direction of the middle frame, so The sound hole runs through a side wall of the communicating groove.

In one embodiment, the protrusion includes a first slope, the first slope is inclined away from the end frame, and the sound hole passes through the bottom wall of the communication groove and communicates with the communication groove;

The installation protrusion is provided with an extension part, the extension part is located at the end of the installation protrusion away from the escape groove, the extension part includes a second slope, the second slope faces away from the installation protrusion and Compared with the first surface of the bracket, the third sound hole runs through the second slope, the first slope and the second slope are in contact, and the third sound hole is connected to the communication groove relative and connected. In this embodiment, the volume of the bump is reduced by providing the first slope on the bump, so as to prevent the area of the gap on the circuit board from being too large and save the area of the circuit board.

In one embodiment, the middle frame includes a middle plate and the end frame connected to the middle plate, the middle plate includes a first surface and a second surface opposite to the first surface, The bump is protruded on the first surface of the middle plate and connected with the end frame;

The communication groove includes a first communication groove and a second communication groove connected with the first communication groove, an opening of the first communication groove is located on the surface of the protrusion facing away from the middle plate, the first communication groove The other opening of a communication groove is located on a groove side wall of the second communication groove; the opening of the second communication groove is located on the second surface of the middle plate.

In one embodiment, the first communication groove includes a first groove side wall, the first groove side wall is inclined compared with the opening of the first communication groove, and part of the sound hole runs through the first groove side wall;

The second communication groove is formed by indenting the second surface into the middle plate, the second communication groove includes a groove bottom wall and a sub-groove, and the sub-groove is formed by indenting the groove bottom wall into the middle plate , the sub-trough includes two inclined side walls and a bottom wall connecting the two inclined side walls, another part of the sound hole runs through the bottom wall, and the other opening of the first communication slot is located at one of the on the sloped side wall and towards the sound hole. In this embodiment, by setting the communication grooves on the two faces of the middle frame, that is, setting the special-shaped communication grooves, the volume of the bump can be reduced, thereby reducing the area of the gap opened for the bump on the circuit board, thereby saving The area of the circuit board.

In one embodiment, an opening of the third sound hole is located on the second slope, the third sound hole includes a hole wall, and the extension direction of the hole wall is the same as the extension direction of the third sound hole. An opening of the second sound hole passes through the hole wall and communicates with the third sound hole. In this embodiment, the cross-sectional area of the third sound hole is greater than that of the second sound hole, and the third sound hole is used to communicate with the communication groove to realize communication with the speaker hole, which can improve the sound effect.

In one embodiment, the electronic device includes a camera module and a decorative part, the decorative part includes a receiving groove, and the circuit board further includes an installation avoidance hole, and the installation avoidance hole runs through the circuit board along the thickness direction On the circuit board, the installation avoidance hole is spaced apart from the first speaker unit;

The camera module passes through the installation avoidance hole, the decorative part is installed on the middle frame, and the camera module and the protrusion of the bracket are accommodated in the receiving groove. In this embodiment, the space of the decorative part for accommodating the camera module is utilized to accommodate the bracket accommodating the first speaker unit, so as to avoid increasing the thickness of the electronic device.

In one embodiment, the electronic device includes a screen, the middle frame includes a middle plate, an end frame connected to the middle frame, and a sound outlet groove, the middle plate includes a first surface and a back surface connected to the first surface. facing the second surface, the sound outlet groove is recessed on the second surface, and the sound outlet groove includes a gap recessed on the inner surface of the end frame and a connection area communicated with the installation groove , the screen is installed on the second surface and covers the connection area, and the screen and the gap form the sound outlet gap. The sound output slot is arranged on one side of the display screen so that the user can listen to the sound.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will describe the drawings required for the embodiments of the present application.

FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

Fig. 2 is a schematic structural view of the electronic device shown in Fig. 1 at another angle;

Fig. 3 is a schematic diagram of an angle decomposition structure of the electronic device shown in Fig. 2;

Fig. 4 is a schematic diagram of an angle decomposition structure of the electronic device shown in Fig. 1;

Fig. 5 is a schematic structural diagram of a middle frame of the electronic device shown in Fig. 3;

Fig. 6 is a structural schematic view of the middle frame shown in Fig. 4 at another angle;

Fig. 7 is a schematic cross-sectional view of an angle of the middle frame shown in Fig. 5;

Fig. 8 is a schematic cross-sectional view of an angle shown in Fig. 6;

Fig. 9 is a schematic structural view of the circuit board in the electronic device shown in Fig. 3;

Fig. 10 is a schematic diagram of the partial structure assembly of the electronic device shown in Fig. 3;

Fig. 11 is a schematic structural view of the bracket in the electronic device shown in Fig. 3;

Fig. 12 is a schematic structural view of the bracket shown in Fig. 11 at another angle;

Fig. 13 is a schematic plan view of the bracket shown in Fig. 12;

Fig. 14 is a partial structural cross-sectional view of an angle of the electronic device shown in Fig. 2;

Fig. 15 is a partial structural cross-sectional view from another angle of the electronic device shown in Fig. 2;

Fig. 16 is a schematic cross-sectional structure diagram of an angle of the electronic device shown in Fig. 1;

Fig. 17 is a schematic cross-sectional structure diagram of another angle of the electronic device shown in Fig. 1;

FIG. 18 is a schematic diagram of an exploded structure of an electronic device provided in a second embodiment of the present application;

Fig. 19 is a schematic structural view of the bracket of the electronic device shown in Fig. 18 at another angle;

Fig. 20 is a schematic diagram of the partial structure assembly of the electronic device provided by the second embodiment of the present application;

FIG. 21 is a schematic cross-sectional view of the assembled electronic device shown in FIG. 17;

Fig. 22 is a schematic diagram of an exploded structure of an electronic device provided in a third embodiment of the present application;

FIG. 23 is a schematic structural view of the bracket of the electronic device shown in FIG. 22 at an angle;

FIG. 24 is a schematic structural view of the bracket of the electronic device shown in FIG. 22 at another angle;

Fig. 25 is a schematic diagram of the partial structure assembly of the electronic device provided by the third embodiment of the present application;

FIG. 26 is a schematic cross-sectional view from an angle after assembly of the electronic device shown in FIG. 25 .

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

Please refer to FIG. 1 to FIG. 2 . FIG. 1 is a schematic structural diagram of an electronic device 1000 provided by an embodiment of the present application, and FIG. 2 is a schematic structural diagram of the electronic device 1000 shown in FIG. 1 at another angle.

The electronic device 1000 may be an electronic product such as a mobile phone, a tablet computer, a notebook computer, a car machine, a smart watch, a smart bracelet, a POS machine (point of sales terminal, point of sale terminal), and the like. The embodiment of the present application is described by taking the electronic device 1000 as a mobile phone as an example. Wherein, for the convenience of description, it is defined that the width direction of the electronic device 1000 is the X-axis direction, the length direction of the electronic device 1000 is the Y-axis direction, the thickness direction of the electronic device 1000 is the Z-axis direction, and the X-axis direction, the Y-axis direction and the Z-axis direction The directions are perpendicular to each other. It should be noted that the orientation words such as "top", "bottom", "upper", "lower", "left" and "right" involved in this application are described with reference to the orientation shown in Figure 1 , take the positive direction of the Y-axis as "top", the negative direction of the Y-axis as "bottom", the positive direction of the Z-axis as "up", the negative direction of the Z-axis as "down", and the positive direction of the X-axis The direction is "right", and the negative direction toward the X-axis is "left", which does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a reference to this application. limits.

Please refer to FIG. 3 and FIG. 4 , FIG. 3 is a schematic diagram of an angle-decomposed structure of the electronic device 1000 shown in FIG. 2 , and FIG. 4 is a schematic diagram of an angle-decomposed structure of the electronic device 1000 shown in FIG. 1 . The electronic device 1000 includes a casing 10, a screen 20, a circuit board 30, a bracket 40, a processor (not shown), a camera module, a speaker module (not shown), a power module (not shown) and decorative parts 70. The screen 20 is mounted on one side of the casing 10 . The circuit board 30 , the bracket 40 , the processor, the camera module, the speaker module and the power supply module are all installed inside the casing 10 . The processor can be mounted on the circuit board 30 and electrically connected to the circuit board 30 . Wherein, the processor may be a CPU (central processing unit, central processing unit) of the electronic device 1000 . The decoration part 70 is mounted on the other side of the casing 10 and covers the bracket 40 .

The speaker module is located on the top of the electronic device 1000 and serves as a top speaker module of the electronic device 1000 . The speaker module includes a second speaker unit 63 and a first speaker unit 62 . The second speaker unit 63 can be a high-frequency unit, and can be used as an earpiece of the electronic device 1000 . The second speaker unit 63 can receive the audio signal sent by the processor through the circuit board 30 , and vibrate and sound according to the audio signal, and the sound diffuses into the external environment, so that the earpiece of the electronic device 1000 can emit sound. The first speaker unit 62 is electrically connected to the circuit board 30 to realize an electrical connection with the processor. Wherein, the first speaker unit 62 can be a full-frequency unit, and can be used as a speaker of the electronic device 1000, or can be a low-frequency unit to enhance the stereo effect. The first speaker unit 62 can receive the audio signal sent by the processor through the circuit board 30 , and vibrate and sound according to the audio signal, and the sound diffuses into the external environment, so that the speaker of the electronic device 1000 can sound. In other embodiments, both the second speaker unit 63 and the first speaker unit 62 can be full-range units, and the speaker module can realize three-channel sound, which helps to improve the sound quality of the speaker module. The electronic device 1000 is also provided with a speaker hole 80 and a sound outlet slot 90 , and the speaker hole 80 and the sound outlet slot 90 in this embodiment are located on the top of the electronic device. In other embodiments, the second speaker unit 63 can be omitted. After omitting, the sound output mode of the first speaker unit 62 can pass through the speaker hole 80 and the sound output slot 90, or it can be the speaker hole 80, or the sound output slot. 90.

In this embodiment, the casing 10 includes a middle frame 11 and a rear cover 18 , and the rear cover 18 is installed on one side of the middle frame 11 . The rear cover 18 may be a battery cover of the electronic device 1000 . The rear cover 18 is provided with a mounting hole 181 , and the mounting hole 181 is located on the top of the rear cover 18 and passes through the rear cover 18 . That is, the mounting hole 181 penetrates the rear cover 18 in the thickness direction (the Z-axis direction in the drawing) of the rear cover 18 . The installation hole 181 is a square hole. In other embodiments, the installation hole 181 may also be a circular hole or a hole of other shapes. The speaker hole 80 is located at one end of the middle frame 11 . In this embodiment, the screen 20 may be a display screen such as LCD (liquid crystal display) or OLED (organic light-emitting diode, organic light-emitting diode display), and is used to display information such as images or text. The screen 20 is installed on the other side of the middle frame 11 , that is, the screen 20 is installed on the side of the middle frame 11 away from the back cover 18 . The sound outlet 90 is located at the top of the screen 20 .

The decoration 70 is in the shape of a rectangular cover. The decoration part 70 is provided with a receiving groove 71 and a mounting edge 72 , and the installation edge 72 is an outer peripheral edge of the decoration part 70 . The decoration part 70 is mounted on the installation hole 181 of the back cover 18 , the installation edge 72 is fixedly clamped with the periphery of the installation hole 181 , and the decoration part 70 protrudes from the outer surface of the back cover 18 . The opening of the receiving groove 71 is located on one side of the decoration part 70 . The receiving groove 71 is recessed from the upper surface of the decorative part 70 in the direction of the lower surface (not shown in the figure) (the negative direction of the Z axis in the figure). Wherein, the shape of the receiving groove 71 matches the shape of the bracket 40 . The decoration part 70 can also be provided with a camera hole (not shown in the figure), and the opening of the camera hole is located at the bottom wall of the receiving groove 71 . The imaging hole is recessed from the bottom wall of the receiving groove 71 toward the lower surface of the decorative component 70 , and penetrates through the lower surface of the decorative component 70 . Wherein, external light can enter the receiving groove 71 of the decoration part 70 through the camera hole.

Please refer to FIG. 4 , FIG. 5 and FIG. 6 , FIG. 5 is a schematic structural diagram of the middle frame 11 of the electronic device 1000 shown in FIG. 3 , and FIG. 6 is a structural schematic diagram of the middle frame 11 shown in FIG. 4 at another angle.

The middle frame 11 includes a middle board 111 , two end frames 112 and two side frames (not shown), the middle board 111 includes a first surface 1110 and a second surface 1111 opposite to the first surface 1110 . The two end frames 112 and the two side frames are first connected and both are connected to the side of the middle plate 111, the two end frames 112 and the two side frames surround the middle plate 111 and form a receiving groove 113 with the middle plate 111 . The first surface 1110 is a bottom surface of the receiving groove 113 . The middle board 111 in this embodiment is a rectangular board, and the two end frames 112 located at the ends of the middle board 111 can be regarded as the top and bottom casings of electronic equipment, and are usually used to set speaker holes and connector sockets. The side frames located on the opposite sides of the middle board can be regarded as the two side shells of the electronic device, which can be equipped with volume keys, power on and off keys, etc., and are also the parts held by the user. In this embodiment, the end frame 112 at the top is provided with a speaker hole 80 for cooperating with the speaker module.

In this embodiment, the middle frame 11 further includes a protrusion 114 protruding from the bottom surface (the first surface 1110 ) of the receiving groove 113 and extending toward the opening direction of the receiving groove 113 (the negative direction of the Z axis in the figure). Specifically, the protruding block 114 is rectangular, the protruding block 114 is located on the top of the receiving groove 113 , and the protruding block 114 is connected to the inner side of the end frame 112 . Wherein, the height of the protrusion 114 is smaller than the depth of the receiving groove 113 . Exemplarily, the bump 114 is square. In other embodiments, the protrusion 114 may also be circular or in other shapes.

Please refer to FIG. 5 and FIG. 6 together, the middle frame 11 is further provided with a communication slot 115 , an installation slot 117 and a sound output slot 118 . Both the sound outlet slot 118 and the installation slot 117 are located on the top of the middle frame 11 . The installation groove 117 runs through the first surface and the second surface of the middle plate 111 along the thickness direction of the middle frame 11 . The sound outlet groove 118 includes a slit 1181 and a connection area 1182. The slit 1181 extends along the end frame 112 (X-axis direction), and is specifically recessed on the inner side of the end frame 112 and runs through the upper surface of the end frame 112. That is, it faces the same surface as the first surface 1110 . The sound outlet groove 118 is partially recessed on the second surface 1111 of the middle plate 111 (depressed from the second surface of the middle plate 111 to the first surface (the negative direction of the Z axis in the figure)), and the connecting area 1182 is located in the installation groove 117- side and communicate with the mounting groove 117.

Please refer to FIG. 6 , FIG. 7 and FIG. 8 together. FIG. 7 is a schematic cross-sectional view of the middle frame 11 shown in FIG. 5 at an angle; FIG. 8 is a schematic cross-sectional view of the middle frame 11 shown in FIG. 6 at an angle. The communication groove 115 runs through the protruding block 114 and the second surface 1111 of the middle plate 111 and communicates with the sound hole 80 . One opening of the communication groove 115 is located on the upper surface (not shown) of the protrusion 114 , and the other opening is located on the second surface 1111 . Specifically, the communication groove 115 includes a first communication groove 115 a and a second communication groove 115 b, and the opening of the first communication groove 115 a is located on the upper surface of the protrusion 114 and communicates with the receiving groove 113 . The first communication groove 115a includes a first groove side wall 1150, the first groove side wall 1150 is connected to the end frame 112, the first groove side wall 1150 is inclined compared with the opening of the first communication groove 115a, and part of the sound hole 80 runs through the first communication groove 115a. A groove side wall 1150 communicates with the first communication groove 115a.

The opening of the second communication groove 115 b is located on the second surface 1111 , and the second communication groove 115 b is spaced apart from the mounting groove 117 in the X-axis direction, and spaced from the sound output groove 118 in the Y-axis direction. The second communication groove 115b includes a groove bottom wall 1152 and a sub-groove 1153. The second communication groove 115b is formed by indenting the second surface 1111 into the middle plate 111. The opening of the second communication groove 115b faces away from the receiving groove 113 and is located on the second side of the middle plate. Two surfaces. The groove bottom wall 1152 is parallel to the second surface 1111 . The sub-groove 1153 is formed by recessing the bottom wall 1152 of the groove toward the inside of the middle plate 111 (specifically, recessing into the protrusion 114 ), and the sub-groove 1153 communicates with part of the speaker hole 80 . Actually, the first communication groove 115a is within the projection range of the second communication groove 115b.

Specifically, the sub-trough 1153 includes two inclined side walls 1154 and a bottom wall 1155 connected to the inclined side walls 1154 , and the sound hole 80 communicates with the sub-trough 1153 through the bottom wall 1155 . The first communication groove 115 a communicates with the sub-groove 1153 through one of the inclined side walls 1154 , that is, the other opening of the first communication groove 115 a is located on the inclined side wall 1154 and faces the bottom wall 1155 . Wherein, the sub-groove 1153 is an inclined groove, which is recessed from the middle plate 111 to the protrusion 114, and the bottom wall 1155 can be a part of the end frame 112 or a part of the protrusion. It can be understood that the first communication groove 115a runs through part of the groove sidewall of the second communication groove 115b. The area of the second communication groove 115b is larger, which facilitates the processing of the first communication groove 115a, and can also reduce the size of the first communication groove 115a, thereby reducing the size of the bump, and reducing the size of the gap on the circuit board 30 , thereby increasing the actual use area of the circuit board.

Please refer to FIG. 9 and FIG. 10 . FIG. 9 is a schematic structural diagram of the circuit board 30 in the electronic device 1000 shown in FIG. 3 , which includes a speaker module. FIG. 10 is a schematic diagram of partial structural assembly of the electronic device 1000 shown in FIG. 3 .

The circuit board 30 may be a main board (main board) of the electronic device 1000 . The circuit board 30 includes a mounting surface 31 on which a first mounting area 311 and a second mounting area 312 adjacent to the first mounting area 311 are disposed. The circuit board 30 also has avoidance holes 32 , a plurality of installation avoidance holes 33 and notches 34 . Avoidance holes 32, multiple installation avoidance holes 33 (two or more) and notches 34 penetrate the circuit board 30 along the thickness direction (Z-axis direction) of the circuit board 30, that is, penetrate the mounting surface 31 and face away from the mounting surface 31. s surface.

Wherein, the avoidance hole 32 , the installation avoidance hole 33 and the notch 34 are arranged at intervals; the avoidance hole 32 and the notch 34 are located on the top of the circuit board 30 and run through the top surface of the circuit board 30 (not shown). The notch 34 is located on one side of the escape hole 32 . A plurality of installation avoidance holes 33 are located on the first installation area 311 of the circuit board 30 , and the notches 34 and the avoidance holes 32 are located above the first installation area 311 . It should be noted that the part of the circuit board 30 between the avoidance hole 32 and the installation avoidance hole 33 is generally used for routing radio frequency signal lines and control lines, and the distance between the avoidance hole 32 and the installation avoidance hole 33 can be convenient. Lines such as radio frequency signal lines and control lines are arranged to ensure the reliability of the circuit board 30 .

Please refer to FIG. 10 , the circuit board 30 , the camera module (not shown) and the speaker module are installed in the receiving groove 113 of the middle frame 11 . Specifically, the circuit board 30 is installed on the bottom wall of the receiving groove 113 (not shown). The notch 34 of the circuit board 30 avoids the protrusion 114 of the middle frame 11 . The camera module is mounted on the bottom wall of the receiving groove 113 and passes through a plurality of installation escape holes 33 of the circuit board 30 . The camera module is electrically connected to the circuit board 30 to realize the electrical connection with the processor. The camera module can receive the information collection signal sent by the processor through the circuit board 30 , and collect light outside the electronic device 1000 to form corresponding image data.

The second speaker unit 63 of the speaker module is located on the top of the electronic device 1000 , and the second speaker unit 63 is installed in the installation groove 117 . Specifically, the second speaker unit 63 passes through the installation avoidance hole 33 of the circuit board 30 and is electrically connected with the circuit board 30 to realize an electrical connection with the processor. Wherein, the second speaker unit 63 can be a high-frequency unit, and can be used as an earpiece of the electronic device 1000 . The second speaker unit 63 can receive the audio signal sent by the processor through the circuit board 30 , and vibrate and sound according to the audio signal, and the sound diffuses into the external environment, so that the earpiece of the electronic device 1000 can emit sound.

The first speaker unit 62 is installed on the second installation area 312 of the circuit board 30 , that is, on the installation surface 31 , and is electrically connected to the circuit board 30 to realize an electrical connection with the processor. Along the X-axis direction, the first speaker unit 62 is spaced apart from the camera module. In this embodiment, the first speaker unit 62 is directly disposed on the mounting surface 31 of the circuit board 30 , and there is no need to provide an avoidance hole penetrating the circuit board 30 on the circuit board 30 , which can save the space of the circuit board 30 . Wherein, the first speaker unit 62 can be a full-range unit, and can be used as a speaker of the electronic device 1000; of course, it can also be used as a bass unit. The first speaker unit 62 can receive the audio signal sent by the processor through the circuit board 30 , and vibrate and sound according to the audio signal, and the sound diffuses into the external environment, so that the speaker of the electronic device 1000 can sound. At this time, the first speaker unit 62 can cooperate with the second speaker unit 63 to produce sound, which can reduce the power consumption of the speaker module and help prolong the battery life of the electronic device 1000 .

In addition, the electronic device 1000 may further include another speaker module (not shown in the figure), which is located at the bottom of the electronic device 1000 and used as a bottom speaker module of the electronic device 1000 . At this time, the electronic device 1000 can simultaneously use the top speaker module and the bottom speaker module to produce sound, so as to realize the "dual speakers" sounding mode of the electronic device 1000, which helps to improve the sound quality of the electronic device 1000.

Please refer to FIG. 11 and FIG. 12. FIG. 11 is a schematic structural view of the bracket 40 in the electronic device 1000 shown in FIG. 3. FIG. 12 is a schematic structural diagram of the bracket 40 shown in FIG. A schematic diagram of the planar structure of the bracket 40 .

In this embodiment, the bracket 40 includes a bracket body 41 , a boss 42 , an assembly groove 43 , an escape groove 45 , a mounting protrusion 46 and a sound hole 47 , and the boss 42 and the mounting protrusion 46 are fixedly connected to the bracket body 41 . The shape of the bracket body 41 is adapted to the shape of the receiving groove 113 (shown in FIG. 4 ) of the middle frame 11 . The bracket body 41 includes a first surface 411 and a second surface 412 opposite to the first surface 411 .

The boss 42 is fixedly connected to the second surface 412 of the bracket body 41 . The boss 42 protrudes from the second surface 412 of the bracket body 41 in a direction away from the second surface 412 (the positive direction of the Z axis in the figure). The assembly groove 43 runs through the boss 42 on the first surface 411 and the second surface 412, that is, the assembly groove 43 is a through groove, and its two openings are respectively located on the side of the first surface 411 and the boss 42 facing away from the second surface 412 . The shape of the fitting groove 43 is adapted to the shape of the camera module.

The avoidance groove 45 is recessed on the first surface 411 . Along the Z-axis direction, the avoidance groove 45 is recessed from the first surface 411 to the second surface 412 ; along the X-axis direction, the avoidance groove 45 is spaced apart from the assembly groove 43 . The shape of the escape groove 45 is adapted to the shape of the first speaker unit 62 for accommodating the first speaker unit 62 . A functional groove 451 is recessed on the groove bottom wall 450 of the escape groove 45 parallel to the first surface 411 , the first speaker unit covers the functional groove 451 , and the functional groove 451 serves as the front sound cavity of the first speaker unit 62 .

The installation protrusion 46 protrudes from the first surface 411 of the bracket body 41 . In the Y direction, the installation protrusion 46 is adjacent to the avoidance groove 45 ; along the Z axis direction, the installation protrusion 46 partially overlaps with the boss 42 . The included angle θ between the length extension direction of the installation protrusion 46 and the Y-axis direction is greater than or equal to 0 degrees and less than 90 degrees.

Please refer to FIG. 14 and FIG. 15 together. FIG. 14 is a partial structural sectional view of the electronic device 1000 shown in FIG. 2 , and FIG. 15 is a partial structural sectional view of the electronic device 1000 shown in FIG. 2 .

The sound hole 47 includes a first sound hole 471, a second sound hole 472 and a third sound hole 473, and the first sound hole 471, the second sound hole 472 and the third sound hole 473 are sequentially connected along the extending direction of the sound hole 47 . A first sound hole 471 is provided on the side wall (not shown) of the functional groove 451 adjacent to the installation protrusion 46 , and the extension direction of the first sound hole 471 is parallel to the Y-axis direction. After the second sound hole 472 extends to the inside of the installation protrusion 46 along the Z axis in the boss 42, it extends along the extension direction of the installation protrusion 46 inside the installation protrusion 46; The stepped hole passing through the boss 42 and the mounting protrusion 46 extends along the Z axis as a whole. The second sound hole 472 only needs to be connected to the first sound hole 471 and the third sound hole 473 , and its path is not limited. The third sound hole 473 runs through the outer surface of the installation protrusion 46 along the Z-axis direction, and is located at the end of the installation protrusion 46 away from the escape groove 45 ; the extension direction of the third sound hole 473 is parallel to the Z-axis direction. In some other embodiments, various parts in the sound hole 47 may also adopt other structures, and the present application does not specifically limit the structure of the sound hole 47 . The first sound hole 471 , the second sound hole 472 and the third sound hole 473 can be round holes, square holes, or through-slot structures, and their shapes are not limited.

In one embodiment, the front sound cavity of the first speaker unit 62, that is, the functional slot 451 may be in an hourglass shape, that is, the side walls of the slot in the Z-axis direction will be relatively close to each other, and the functional slot 451 in the Z-axis direction The section of the part of 451 located between the opening and the bottom wall of the groove is smaller than the area of the opening and the bottom wall of the groove. It can be understood that the inside of the functional groove 451 is partially narrowed. Or, the cross-sectional area of the second sound hole 472 is smaller than the area of the opening connecting the first sound hole 471 and the third sound hole 473 in the direction of its sound output, which can be understood as the sound output direction of the second sound hole 472 Some areas are narrowed. In this way, the high-frequency performance of the first speaker unit 62 can be improved. It can be understood that the sound output channel of the first speaker unit 62 is not limited to the narrowed area at the second sound hole, and the first sound hole 471 and the third sound hole 473 may also be provided with narrow areas.

The bracket 40 is installed in the receiving groove 113 of the middle frame 11 . Specifically, the bracket 40 is installed on the surface of the circuit board 30 away from the middle frame 11 (ie, the installation surface 31 of the circuit board 30 ). The bracket 40 can be installed on the circuit board 30 through fasteners such as screws. Wherein, the bracket 40 covers the second speaker unit 63 . The camera module passes through the assembly slot 43 , and the first speaker unit 62 is installed in the escape slot 45 and covers the first sound hole 471 . In addition, the second surface 412 of the bracket body 41 can be flush with the surface of the middle frame 11 , so as to facilitate subsequent assembly of the back cover 18 and the middle frame 11 .

Please refer to FIG. 15 , FIG. 16 and FIG. 17 , FIG. 16 is a schematic cross-sectional structural view of the electronic device 1000 shown in FIG. 1 from one angle, and FIG. 17 is a schematic cross-sectional structural schematic view of the electronic device 1000 shown in FIG. 1 from another angle.

The decorative part 70 is installed on the surface of the bracket 40 facing away from the middle frame 11 and covers the bracket 40 and the camera module. Wherein, the bracket 40 , the camera module and the decoration 70 are all passed through the installation hole 181 of the rear cover 18 . Specifically, the accommodating groove 71 of the decoration part 70 accommodates the boss 42 of the bracket 40 . In addition, the camera hole of the decorative part 70 is set opposite to the camera module. The camera module can collect the light outside the electronic device 1000 through the camera hole, and form corresponding image data to realize the camera.

The screen is mounted on the other side of the middle frame 11, and seals the installation groove 117 and the second communication groove 115b of the communication groove 115. The installation groove 117 forms the front sound cavity 63a of the second speaker unit 63, the second speaker in this embodiment The unit 63 is smaller than the first speaker unit 62, and correspondingly reduces the volume of the front sound chamber 63a of the second speaker unit 63, and the second speaker unit 63 can be used as a tweeter unit in an external playback scene. The gap 1181 between the screen 20 and the sound outlet 118 forms a sound outlet 90 , and the sound outlet 90 communicates with the front sound chamber 63 a of the second speaker unit 63 through the connection area 1182 of the sound outlet 118 . The sound that the second speaker unit 63 emits when it works can be transmitted from the front sound chamber 63a to the outside of the electronic device 1000 through part of the sound outlet groove 118 and the sound outlet slit 90, that is, it can be understood that the sound that the second speaker unit 63 emits when it works sequentially The sound is transmitted to the outside of the electronic device 1000 through the installation slot 117 and the sound output slot 118 of the middle frame 11 to realize the sound generation of the second speaker unit 63 . The sound output seam is formed by the sound output groove of the middle frame and the screen 20, and the sound output seam can also be formed by the screen 20 cutting groove and the middle frame.

The third sound hole 473 of the sound hole 47 is opposite to and communicated with the communication groove 115 of the protrusion 114 , and the sound hole 47 communicates with the sound hole 80 through the communication groove 115 . The functional slot 451 in the avoidance slot 45 of the bracket 40 forms the front sound chamber 62a of the first speaker unit 62 and is sealed by the rear cover 18 or the decoration. Wherein, the first sound hole 471 of the sound hole 47 communicates with the front sound cavity 62 a of the first speaker unit 62 . The sound emitted by the first speaker unit 62 during work can be transmitted from the front sound cavity 62a to the outside of the electronic device 1000 through the sound hole 47, that is, it can pass through the sound hole 47 of the bracket 40, the communication groove 115 of the middle frame 11 and the The sound hole 80 transmits to the outside of the electronic device 1000 to realize sound emission from the first speaker unit 62 . It can be understood that the sound hole 47 , the communication groove 115 and the sound hole 80 communicate with the sound channel of the first speaker unit 62 .

The sound output slit 90 can be used as a gap for sound output during a call. Since the human ear cannot completely fit and seal the sound output slit, the sound from the sound output slit will spread outward and become sound leakage, which affects the privacy of the call. For this problem, the front sound chamber 62a of the first speaker unit 62 can emit a sound wave with a phase opposite to that of the sound outlet 90 through the top speaker hole 80, so as to offset the sound leakage from the sound outlet and improve the privacy of the call.

The electronic device 1000 further includes a first adhesive layer, a second adhesive layer, a third adhesive layer, and a fourth adhesive layer. The first adhesive layer is bonded between the first speaker unit 62 and the bracket 40 . Specifically, the upper surface (not shown) of the first adhesive layer is bonded to the first speaker unit 62 , and the lower surface (not shown) of the first adhesive layer is bonded to the bottom wall of the escape groove 45 of the bracket 40 . Wherein, the first adhesive layer is provided with a through hole (not marked in the figure), and the through hole penetrates the first adhesive layer along the thickness direction of the first adhesive layer, so as to ensure that the first adhesive layer will not hinder the first speaker unit 62 voice. The second adhesive layer connects the protrusion 114 of the middle frame and the installation protrusion 46 to seal the communication groove 115 and the third sound hole 473 .

In some other embodiments, the first speaker unit 62 may not be installed on the circuit board 30 , but installed on the bracket 40 through the first adhesive layer. At this time, along the Z-axis direction, the first speaker unit 62 is spaced apart from the circuit board 30, and the electronic components of the electronic device 1000 can be mounted on the circuit board 30 and positioned between the first speaker unit 62 and the circuit board 30, so as to improve The utilization rate of space inside the electronic device 1000 improves the integration degree of the electronic device 1000 .

The third adhesive layer 100c is bonded between the screen 20 and the middle plate 111 of the middle frame 11, and surrounds the installation groove 117 and the sound outlet groove 118, and the fourth adhesive layer (not shown in the figure) is bonded between the second speaker unit 63 and the middle The board 111 is installed between the grooves 117 and ensures that it will not hinder the sound generation of the second speaker unit 63 .

Please refer to FIG. 18 and FIG. 19. FIG. 18 is a schematic exploded view of the electronic device 1000 provided by the second embodiment of the present application, and FIG. 19 is a schematic structural view of the bracket of the electronic device 1000 shown in FIG. 18 at another angle.

The difference between the electronic device 1000 shown in this embodiment and the electronic device 1000 shown in the above embodiments is that the connecting groove 115 of the middle frame 11 is a groove recessed on the surface of the protrusion 114, and does not penetrate through the middle plate 111. The sound hole 80 runs through the end frame 112 and the groove sidewall of the communication groove 115 , in fact, the end frame 112 is the groove sidewall of the communication groove 115 . It can be understood that the communication groove 115 has a groove bottom wall, and the side wall of the groove in the Y direction is not a slope, but may be a plane perpendicular or substantially perpendicular to the middle plate 111 .

The installation protrusion 46 of the bracket 40 further includes an extension portion 461 , and the extension portion 461 is formed by extending the end of the installation protrusion 46 away from the escape groove 45 along the X-axis direction. The third sound hole 473 of the sound hole 47 is opened on the extension part 461, the opening of the sound hole 47 is located on the upper surface of the mounting protrusion 46 (the same orientation as the first surface 411), and the hole wall of the third sound hole 473 is Vertical or approximately vertical to the plane of the bracket body 41 . It can be understood that the length of the third sound hole 473 along the X direction is greater than the length of the third sound hole 473 described in the first embodiment. Both the extension portion 461 and the third sound hole 473 meet the length of the protrusion 114 and the length of the communication groove 115 . In this embodiment, the areas of the communication groove 115 and the third sound hole 473 are increased, which is more conducive to the release of sound.

Please refer to FIG. 20 and FIG. 21 . FIG. 20 is a schematic diagram of a partial structure and assembly of an electronic device 1000 provided in the second embodiment of the present application. FIG. 21 is a schematic cross-sectional view of the assembled electronic device 1000 shown in FIG. 17 .

Both the circuit board 30 and the speaker module are installed in the receiving slot 113 of the middle frame 11 . The circuit board 30 is installed on the bottom wall (not shown) of the containing groove 113 . The notch 34 of the circuit board 30 avoids the protrusion 114 of the middle frame 11 . The first speaker unit 62 is located on the installation surface 31 of the circuit board 30 , and the bracket is installed on the receiving groove 113 , specifically, the bracket 40 is installed on the surface of the circuit board 30 away from the middle frame 11 . The second speaker unit 63 is installed in the installation slot 117 , and the bracket 40 covers the second speaker unit 63 . The first speaker unit 62 is installed in the escape groove 45 and covers the first sound hole 471 . The decoration part 70 is installed on the surface of the bracket 40 away from the middle frame 11 and covers the bracket 40 . The installation groove 117 forms the front sound cavity 63 a of the second speaker unit 63 . Wherein, the sound outlet slot 90 communicates with the front sound cavity 63 a of the second speaker unit 63 through the sound outlet slot 118 . The third sound hole 473 of the sound hole 47 is opposite to and communicated with the communication groove 115 of the protrusion 114, the hole wall of the third sound hole 473 is aligned with the side wall of the communication groove 115 in the Z direction, and the sound hole 47 passes through the communication groove 115 communicates with the sound hole 80 . The communication groove 115 in this embodiment has a simple structure. The sound hole 47 , the communication groove 115 and the sound hole 80 communicate with the sound channel of the first speaker unit 62 .

Please refer to FIG. 22 and FIG. 23. FIG. 22 is a schematic exploded view of the electronic device 1000 provided in the third embodiment of the present application. FIG. 23 is a schematic view of the structure of the bracket of the electronic device 1000 shown in FIG. 22 at an angle; FIG. 24 is FIG. 22 is a schematic structural diagram of the bracket of the electronic device 1000 at another angle.

The difference between the electronic device 1000 shown in this embodiment and the electronic device 1000 shown in the above embodiments is that the protrusion 114 of the middle frame 11 includes a first slope 1141, and the first slope 1141 faces away from the end frame and is aligned with the middle frame. The first surface 1110 of the board 111 is connected and forms an included angle, and the included angle is greater than 90 degrees and less than 180 degrees. The communication slot 115 is recessed on the first slope 1141 and communicates with the sound hole 80 . The installation protrusion 46 of the bracket 40 includes a body 461 and an extension portion 462 , the extension portion 462 includes a second slope 463 , and the third sound hole 473 is disposed on the second slope 463 . The inclination angle of the body 461 is the same as that of the installation protrusion 46 of the first embodiment.

Specifically, the communication groove 115 is formed by the first inclined surface 1141 being recessed toward the direction of the end frame 112 , and the first inclined surface 1141 is recessed toward the Y direction. The bottom wall of the communication groove 115 is the inner surface of the end frame 112 facing the receiving groove 113 , and the speaker hole 80 passes through the bottom wall of the communication groove 115 to communicate with the communication groove 115 .

In this embodiment, the extension portion 462 is located at the end of the installation protrusion 46 away from the escape groove 45 , the extension portion 462 is roughly a prism, and its length direction is parallel to the X-axis direction, and part of the extension portion 461 is connected to the installation protrusion 46 . The extension portion 462 includes a second inclined surface 463 , a resisting surface 464 and a connecting surface 465 . The resisting surface 464 connects the second inclined surface 463 and the connecting surface 465 . The second slope 463 is located at the end of the bracket body 41 and connected to the end surface (connecting the first surface 411 and the second surface 412 ), and the second slope 463 faces away from the first surface 411 . The connection surface 465 faces the first surface 411 for assembly with the circuit board 30 . The connecting surface 465 is used for abutting against the bottom wall of the receiving groove 113 .

The third sound hole 473 of the sound hole 47 is provided on the second slope 463, an opening of the third sound hole is located on the second slope 463, and the other opening communicates with the second sound hole 472; in fact the third sound hole 473 The area of the two openings is different, the area of the opening communicating with the second sound hole 472 is smaller, and the area of the opening connected to the sound hole 80 is larger, which is more conducive to the playback of sound. A part of the second sound hole 472 extends along the length direction of the body 461 and communicates with the third sound hole 473; the other part of the second sound hole 472 extends into the boss 42 along the Z axis and extends toward the escape groove 45, It communicates with the first sound hole 471. In fact, the second sound hole 472 is a stepped hole passing through the boss 42 and the installation protrusion 46 , and the whole extends along the Z-axis direction.

Please refer to FIG. 25 and FIG. 26. FIG. 25 is a schematic assembly diagram of a partial structure of the electronic device 1000 provided by the third embodiment of the present application; FIG. 26 is a schematic cross-sectional view of an angle after assembly of the electronic device 1000 shown in FIG.

Both the circuit board 30 and the speaker module are installed in the receiving slot 113 of the middle frame 11 . The circuit board 30 is installed on the bottom wall (not shown) of the containing groove 113 . The notch 34 of the circuit board 30 avoids the protrusion 114 of the middle frame 11 , and the communication groove 115 is located above the circuit board. The first speaker unit 62 is located on the installation surface 31 of the circuit board 30 , and the bracket 40 is installed on the receiving groove 113 , specifically, the bracket 40 is installed on the surface of the circuit board 30 away from the middle frame 11 . Wherein, the second slope 463 of the installation protrusion 46 of the bracket 40 is parallel to the first slope 1141 of the protrusion 114 of the middle frame 11, and the third sound hole 473 of the sound hole 47 communicates with the sound hole 80 through the communication groove 115 . The abutting surface 464 of the extension portion 462 is abutted against the middle board 111 , and the connecting surface 465 is abutted against an end portion of the circuit board 30 provided with a notch. The second speaker unit 63 is installed in the installation slot 117 , and the bracket 40 covers the first speaker unit 62 and the second speaker unit 63 . The first speaker unit 62 is installed in the escape groove 45 and covers the first sound hole 471 . The decoration part 70 is installed on the surface of the bracket 40 away from the middle frame 11 and covers the bracket 40 .

It should be noted that the periphery of the sound-passing part in any of the above embodiments, including the periphery of the groove and the hole, is sealed and connected by sealing colloid to ensure the sealing performance and prevent sound leakage. The rear cavity of the first speaker unit 62 in any of the above embodiments is formed by the sealing part of the circuit board, the rear cover 18 and the middle frame 11 . The rear cavity of the second speaker is formed by the sealing part of the rear cover 18 and the middle frame 11 , which will not be described again.

The above description is only the specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application, and should It falls within the protection scope of the present application; in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (14)

1. An electronic device, characterized in that it includes a camera module, a middle frame, a circuit board, a bracket and a first speaker unit, the circuit board includes a mounting surface, and the bracket includes an avoidance groove; the avoidance groove is along the The thickness direction of the bracket is recessed into the bracket, the first speaker unit is positioned on the mounting surface and electrically connected to the circuit board, and the circuit board and the bracket are stacked and installed in the middle frame, the installation surface faces away from the middle frame, the bracket is fixed on the installation surface, the camera module is assembled in the middle frame and electrically connected with the circuit board, and the camera module Passing through the bracket and being positioned on the middle frame through the bracket, the first speaker unit is accommodated in the escape groove in the thickness direction of the electronic device. 2. The electronic device according to claim 1, characterized in that the electronic device comprises a second speaker unit and a sound outlet, the middle frame comprises a mounting slot, the circuit board comprises an avoidance hole, and the avoidance hole penetrating through the circuit board along the thickness direction of the circuit board, the installation groove penetrating through the middle frame along the thickness direction of the middle frame, the second speaker unit passing through the escape hole, and covering the The opening of the installation groove, the installation groove forms the front sound chamber of the second speaker unit, and the sound outlet connects the front sound chamber of the second speaker unit with the outside of the electronic device. 3. The electronic device according to claim 2, wherein the volume of the second speaker unit is smaller than the volume of the first speaker unit. 4. The electronic device according to claim 3, wherein the first speaker unit is a tweeter unit or a full-range unit, and the second speaker unit is a full-range unit. 5. The electronic device according to any one of claims 1-4, wherein the middle frame is provided with an end frame and a speaker hole provided on the end frame, and the avoidance groove includes a groove bottom wall, a functional groove is recessed on the bottom wall of the groove, the first speaker unit covers the functional groove, so that the functional groove forms the front sound cavity of the first speaker, and the sound hole communicates with the The front sound cavity of the first speaker unit and the outside of the middle frame. 6. The electronic device according to claim 5, wherein the middle frame comprises a protrusion, and the protrusion is provided with a communication groove, and the communication groove extends along the thickness direction of the middle frame, and the The communication slot communicates with the sound hole, the bracket includes a sound hole, and the sound hole communicates with the front sound cavity of the first speaker unit and the communication slot. 7. The electronic device according to claim 6, wherein the bracket comprises a bracket body and a boss, the bracket body includes a first surface and a second surface opposite to the first surface, the The boss is located on the second surface, and the avoidance groove is recessed on the first surface; There is also a mounting protrusion protruding from the first surface, and the sound hole includes a first sound hole, a second sound hole and a third sound hole connected in sequence, and the first sound hole is along the length of the bracket The direction runs through the groove side wall of the functional groove, the second sound hole is arranged inside the boss and the installation protrusion and extends along the thickness direction of the bracket, and the third sound hole passes through the installation The protrusion is in contact with the installation protrusion, and the third sound hole is opposite to and communicated with the communication groove. 8. The electronic device according to claim 7, wherein one end of the installation protrusion has an extension part extending along the width direction of the bracket, and the extension part is located at the side of the installation protrusion away from the avoidance groove. At one end, the third sound hole extends from the end of the installation protrusion to the extension part, and extends along the length direction of the extension part; The communication groove is recessed from the upper surface of the protrusion to the inside of the protrusion, the opening of the communication groove is located on the surface of the protrusion, and the communication groove extends along the width direction of the middle frame, so The sound hole runs through a side wall of the communicating groove. 9. The electronic device according to claim 7, wherein the protrusion includes a first slope, the first slope is inclined away from the end frame, and the sound hole runs through the groove of the communication groove The bottom wall communicates with the communication groove; The installation protrusion is provided with an extension part, the extension part is located at the end of the installation protrusion away from the escape groove, the extension part includes a second slope, the second slope faces away from the installation protrusion and Compared with the first surface of the bracket, the third sound hole runs through the second slope, the first slope and the second slope are in contact, and the third sound hole is connected to the communication groove relative and connected. 10. The electronic device according to claim 7, wherein the middle frame includes a middle board and the end frame connected to the middle board, the middle board includes a first surface and a connection with the second One surface faces away from the second surface, and the bump protrudes from the first surface of the middle plate and connects with the end frame; The communication groove includes a first communication groove and a second communication groove connected with the first communication groove, an opening of the first communication groove is located on the surface of the protrusion facing away from the middle plate, the first communication groove The other opening of a communication groove is located on a groove side wall of the second communication groove; the opening of the second communication groove is located on the second surface of the middle plate. 11. The electronic device according to claim 10, wherein the first communication groove comprises a first groove side wall, and the first groove side wall is inclined compared with the opening of the first communication groove, and partly The sound hole runs through the side wall of the first slot; The second communication groove is formed by indenting the second surface into the middle plate, the second communication groove includes a groove bottom wall and a sub-groove, and the sub-groove is formed by indenting the groove bottom wall into the middle plate , the sub-trough includes two inclined side walls and a bottom wall connecting the two inclined side walls, another part of the sound hole runs through the bottom wall, and the other opening of the first communication slot is located at one of the on the sloped side wall and towards the sound hole. 12. The electronic device according to claim 9, wherein an opening of the third sound hole is located on the second slope, the third sound hole includes a hole wall, and the extension direction of the hole wall Intersecting with the extension direction of the third sound hole, an opening of the second sound hole passes through the hole wall and communicates with the third sound hole. 13. The electronic device according to claim 7, characterized in that, the electronic device comprises a camera module and a decorative part, the decorative part comprises a receiving groove, the circuit board further comprises a mounting avoidance hole, and the mounting avoidance A hole runs through the circuit board along the thickness direction of the circuit board, and the installation avoidance hole is spaced apart from the first speaker unit; The camera module passes through the installation avoidance hole, the decorative part is installed on the middle frame, and the camera module and the boss of the bracket are accommodated in the receiving groove. 14. The electronic device according to claim 2, wherein the electronic device includes a screen, the middle frame includes a middle plate, an end frame connected to the middle frame, and a sound outlet, and the middle plate includes a second A surface and a second surface facing away from the first surface, the sound outlet groove is recessed on the second surface, and the sound outlet groove includes a gap recessed on the inner surface of the end frame and a connection area communicating with the installation groove, the screen is mounted on the second surface and covers the connection area, and the screen and the slit form the sound output slot.

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