Electronic device
By using the supporting plate and the seals of the rear housing in the electronic device to form the rear cavity of the speaker, the problem of increasing the thickness of the device due to the need for a box of the speaker is solved, and the lightness and thinness of the device and the low-frequency performance of the speaker are improved.
Patent Information
- Application Number
- CN202421339498.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The speakers in existing electronic devices need to be equipped with a box to avoid sound short circuit, which leads to an increase in the thickness of the equipment and makes it difficult to achieve lightness and thinness.
By adjusting the box structure, the rear cavity of the speaker is formed by using the supporting plate and the seals of the rear shell, and the separate box arrangement is cancelled, thereby reducing the installation space and equipment thickness.
It has achieved further thinning of electronic devices to meet users' appearance needs. At the same time, since the rear cavity space is not limited by the box, the low-frequency performance of the speakers is improved, and the sound quality is more full and round.
Smart Images
Figure CN222763987U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of loudspeakers, and in particular to an electronic device. Background Art
[0002] At present, speakers in electronic devices generally need to be provided with a box to isolate the sound waves emitted from the front and back of the speaker diaphragm to avoid the acoustic short circuit phenomenon where the sound waves in front and behind the diaphragm cancel each other out. The existence of the speaker box generally increases the overall thickness of the electronic device, which is not conducive to achieving the thinness of the electronic device. Utility Model Content
[0003] An embodiment of the present application provides an electronic device, which can reduce the installation space required for the box by adjusting the structure of the box, so that the thickness of the electronic device can be further reduced.
[0004] In a first aspect, the present application provides an electronic device, comprising a display screen, a support plate, a rear shell, a first sealing member and a speaker. The support plate is connected to the non-display side of the display screen. The rear shell is located on the side of the support plate facing away from the display screen, and the rear shell is provided with a sound outlet, and the sound outlet runs through the rear shell along the thickness direction of the rear shell. The first sealing member is sealingly connected between the support plate and the rear shell, and the first sealing member, the support plate and the rear shell form a accommodating space, and the accommodating space is connected to the sound outlet. The speaker comprises a mounting frame and a diaphragm, both of which are located in the accommodating space, the mounting frame is sealingly connected to the periphery of the sound outlet, the diaphragm is connected to the side of the mounting frame facing away from the support plate, and the diaphragm is arranged opposite to the sound outlet.
[0005] In this embodiment, the support plate and the rear shell of the present application directly form the rear cavity of the speaker through the cooperation of the seal, and there is no need to set up a box for the speaker separately, so the thickness of the electronic device can be further reduced. As a result, the electronic device can be miniaturized and thinner, meeting the current user's requirements for the appearance of electronic devices. Moreover, the installation space required for relatively thin electronic products is smaller, so that they can be applied to more usage scenarios.
[0006] Since the support plate and the rear shell can form the rear cavity of the speaker through the seal, the volume of the rear cavity is not limited by the separate cabinet, which makes it easier to set up a larger rear cavity space for the speaker. The larger the rear cavity space of the speaker, the lower the low-frequency cutoff frequency will usually be, which means that the speaker can better reproduce low-frequency sounds, the low-frequency performance is better, and the sound quality is fuller and rounder.
[0007] The sound hole can serve as a channel for sound waves. The speaker assembly generates sound waves through vibration, and the sound waves propagate to the external environment through the sound hole and are heard by the user. The design of the sound hole can increase the propagation area of the sound, thereby increasing the volume.
[0008] In addition, the sound outlet can also protect the internal structure of the speaker assembly. Since the speaker generates vibration and heat during operation, if there is no sound outlet to dissipate heat and release vibration, the internal structure of the speaker assembly may be damaged or the performance may be degraded. The design of the sound outlet can effectively alleviate these problems and increase the service life and working stability of the speaker assembly.
[0009] In a possible implementation manner, the electronic device further includes an elastic member, one end of the elastic member is connected to a surface of the support plate facing away from the display screen, and the other end of the elastic member is connected to the mounting bracket.
[0010] In a possible implementation, the electronic device further includes an elastic member, one end of the elastic member is connected to a surface of the rear housing facing the support plate, and the other end of the elastic member is connected to the mounting bracket.
[0011] In the embodiment of the present application, the speaker can be spaced apart from the support plate, and the speaker can be directly installed on the back shell to prevent the vibration of the speaker from being transmitted to the support plate, thereby preventing the vibration of the support plate from generating abnormal vibration noise.
[0012] In a possible implementation, the mounting frame is provided with a mounting hole, and the mounting hole penetrates the mounting frame along the thickness direction of the mounting frame. The elastic member includes a positioning column and a flexible member, the positioning column is convexly arranged on the surface of the support plate away from the display screen, and is penetrated through the mounting hole and spaced from the hole wall of the mounting hole, and the flexible member is sleeved on the outer periphery of the positioning column and connected between the positioning column and the mounting hole.
[0013] In this embodiment, the flexible member can play a buffering role between the support plate and the mounting frame. When the speaker is working, the speaker may drive the mounting frame to vibrate, and the flexible member can absorb the vibration of the mounting frame to prevent the vibration of the mounting frame from being transmitted to the support plate, thereby preventing the vibration of the support plate from generating abnormal vibration sound.
[0014] In a possible implementation manner, a rib is protruding from a surface of the support plate facing away from the display screen, the first seal is connected between the rib and the rear shell, and the rib, the first seal, the support plate and the rear shell form an accommodating space.
[0015] In this embodiment, in some usage scenarios, the gap between the support plate and the bottom plate of the rear shell is large. When the first seal is connected between the support plate and the bottom plate of the rear shell, the first seal may not be able to form sufficient contact pressure between the support plate and the bottom plate, resulting in poor sealing effect. In addition, since the material of the seal is generally a flexible material with elastic deformation, the flexible material may be sensitive to environmental factors such as temperature, humidity and chemicals. In a larger gap, the first seal may be more susceptible to these factors, resulting in volume shrinkage, thereby reducing its sealing stability.
[0016] The ribs can reduce the distance between the support plate and the rear shell, so that the first seal can form a close contact with the ribs and the bottom plate of the rear shell, generating sufficient contact pressure, thereby providing an effective sealing effect, avoiding sound leakage from the rear cavity of the speaker, thereby avoiding acoustic short circuit of the speaker, increasing the low-frequency performance of the speaker, making the sound emitted by the speaker fuller and more three-dimensional, and enhancing the user's listening experience.
[0017] In a possible implementation, the electronic device further includes a second sealing member, the second sealing member is located in the accommodating space, the second sealing member is sealingly connected between the mounting frame and the rear housing, and the second sealing member is disposed around the sound outlet and the diaphragm.
[0018] In this embodiment, the first seal seals the support plate to the rear shell. The second seal seals the rear shell to the speaker. The support plate, the first seal, the rear shell, the second seal, the mounting frame and the diaphragm form a closed cavity, which can be used as the rear cavity of the speaker. The sealing of the rear cavity also has an important influence on the performance of the speaker. The first seal and the second seal can ensure that the sealing of the rear cavity is good to avoid the negative impact of sound leakage on the sound quality.
[0019] In a possible implementation, the speaker further includes a folding ring, the inner side of the folding ring is connected to the edge of the diaphragm, the outer side of the folding ring is connected to the surface of the mounting frame facing the rear shell, and the second sealing member is sealingly connected between the outer side of the folding ring and the rear shell.
[0020] In this embodiment, the folding ring can block the air flow in front of and behind the diaphragm. The folding ring can prevent the sound radiated backwards generated by the vibration of the diaphragm from going around to the front and causing an acoustic short circuit, thereby ensuring the clarity and accuracy of sound transmission.
[0021] In a possible implementation manner, the diaphragm is arranged concavely relative to the surface of the rear shell facing away from the support plate.
[0022] In this embodiment, the diaphragm is recessed relative to the rear housing so that the diaphragm is not easily impacted by the outside, thereby maintaining the structural integrity of the speaker.
[0023] In a possible implementation, the mounting frame includes a first bracket, a second bracket and a buffer member, the first bracket is connected to the outer periphery of the second bracket, the buffer member is connected between the first bracket and the second bracket, the first bracket is provided with a mounting hole, and the second bracket is connected to the outer side of the folding ring.
[0024] In this embodiment, the vibration of the voice coil of the speaker is transmitted to the second bracket. The buffer pad can effectively prevent the vibration of the second bracket from being transmitted to the first bracket, thereby preventing the speaker from causing the mounting bracket to resonate when the speaker vibrates, and preventing the mounting bracket from resonating with the speaker to cause sound distortion or deterioration of sound quality.
[0025] In addition, the cushion can also prevent the vibration of the speaker from being transmitted to the support plate, preventing the vibration of the support plate from colliding with other parts of the electronic device to generate noise. Reducing the noise associated with the sound of the electronic device can enhance the user experience, so that the user can enjoy pure, undisturbed sound and improve the user's listening experience.
[0026] In a possible implementation manner, the loudspeaker further includes a voice coil connected to a side of the diaphragm facing away from the rear housing.
[0027] In a possible implementation, the rear shell includes a side panel and a bottom panel, the side panel is bent and connected to the bottom panel, and the side of the side panel facing away from the bottom panel is connected to the support panel. The sound outlet hole penetrates the bottom panel along the thickness direction of the bottom panel, or the sound outlet hole penetrates the side panel along the thickness direction of the side panel.
[0028] In a possible implementation manner, the electronic device further includes a grille connected to a hole wall of the sound outlet hole.
[0029] In this embodiment, the grille can protect the diaphragm of the speaker from being damaged due to external impact. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.
[0031] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;
[0032] Figure 2 yes Figure 1 an exploded schematic diagram of the electronic device shown;
[0033] Figure 3 yes Figure 1 A structural schematic diagram of the rear shell shown;
[0034] Figure 4 is another structural schematic diagram of the rear shell provided in an embodiment of the present application;
[0035] Figure 5 This is another possible structural diagram of the rear cover provided in the embodiment of the present application;
[0036] Figure 6 yes Figure 1 A schematic cross-sectional view at BB is shown;
[0037] Figure 7 yes Figure 1 A schematic diagram of the structure of the loudspeaker assembly shown;
[0038] Figure 8 yes Figure 6 An enlarged schematic diagram of the electronic device shown at A;
[0039] Fig. 9 yes Figure 7 An exploded schematic diagram of the loudspeaker shown;
[0040] Fig.10 yes Fig. 9 A schematic structural diagram of the first bracket shown;
[0041] Fig.11 yes Fig. 9 A schematic structural diagram of the second bracket shown;
[0042] Fig.12 yes Fig. 9 The structural schematic diagram of the buffer pad shown;
[0043] Fig.13 yes Fig. 9 The structural schematic diagram of the folding ring shown;
[0044] Fig.14 for Figure 1 The frequency response curve diagram of the electronic device shown and the existing electronic device;
[0045] Fig.15 yes Figure 1 A structural schematic diagram of an assembly of a support plate and an elastic member is shown. DETAILED DESCRIPTION
[0046] The specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can also be implemented in other ways different from those described herein, and therefore, the present application is not limited to the following embodiments.
[0047] For ease of understanding, the terms involved in the embodiments of the present application are first explained.
[0048] Multiple: refers to two or more than two.
[0049] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either direct or indirect through an intermediary.
[0050] The specific implementation of the present application will be clearly described below in conjunction with the accompanying drawings.
[0051] Please refer to Figure 1 and Figure 2 , Figure 1It is a schematic diagram of the structure of the electronic device 100 provided in an embodiment of the present application. Figure 2 yes Figure 1 The electronic device 100 of the embodiment of the present application can be any large-screen terminal device including a speaker, and the electronic device 100 includes any device with an external speaker function, such as a display, an all-in-one computer, a television, etc. The embodiment of the present application does not impose any special restrictions on the specific form of the electronic device 100. For the convenience of description, the electronic device 100 is taken as a television as an example.
[0052] The electronic device 100 comprises a housing 10, a display screen 20, a support plate 30 and a speaker assembly 40. The housing 10 has a receiving space. The display screen 20, the support plate 30 and the speaker assembly 40 are all located in the receiving space of the housing 10.
[0053] in, Figure 1 The X direction is the width direction of the electronic device 100 . Figure 1 The Y direction shown is the height direction of the electronic device 100 . Figure 1 The Z direction shown is the thickness direction of the electronic device 100 .
[0054] In a possible embodiment, the housing 10 includes a rear housing 11, a side housing 12, and a bracket 13. The side housing 12 is connected to the periphery of the rear housing 11 to form a receiving space. The bracket 13 is installed on a side of the side housing 12 away from the receiving space and is located at an end of the side housing 12 in the opposite direction to the Y direction. The bracket 13 is a supporting part of the electronic device 100, which can ensure that the electronic device 100 is firmly placed on the ground or on a desktop.
[0055] Among them, see Figure 3 , Figure 3 yes Figure 1 A structural schematic diagram of the rear shell 11 shown. The rear shell 11 includes a bottom plate 111, a side plate 112 and an extension portion 113. The side plate 112 is arranged around the periphery of the bottom plate 111. The side plate 112 is bent and connected to the bottom plate 111. The side plate 112 and the bottom plate 111 form a receiving space. The extension portion 113 is connected to the side of the side plate 112 away from the bottom plate 111, and extends toward the outer peripheral side of the side plate 112.
[0056] The bottom plate 111 is provided with a heat dissipation hole 1111 and a sound outlet hole 1112. The heat dissipation hole 1111 penetrates the rear shell 11 along the thickness direction (Z direction) of the bottom plate 111. The number of heat dissipation holes 1111 can be multiple. The multiple heat dissipation holes 1111 can be arranged along the edge area of the bottom plate 111 of the rear shell 11. Exemplarily, the side plate 112 of the rear shell 11 can also be provided with an auxiliary heat dissipation hole 1113.
[0057] In this embodiment, the heat dissipation holes 1111 and the auxiliary heat dissipation holes 1113 are both located at the edge of the rear shell 11, which is conducive to natural convection of air. When the electronic device 100 is working, the internal electronic devices will generate heat, and this heat is exchanged with the external environment through the heat dissipation holes 1111 and the auxiliary heat dissipation holes 1113, thereby achieving heat dissipation. The design of the heat dissipation holes 1111 at the edge position can ensure smoother air circulation and improve heat dissipation efficiency. The auxiliary heat dissipation holes 1113 can provide more heat dissipation channels for the electronic devices inside the electronic device 100, thereby improving the heat dissipation performance of the electronic device 100.
[0058] The sound outlet hole 1112 may be located in the middle area of the bottom plate 111. The sound outlet hole 1112 penetrates the bottom plate 111 of the rear housing 11 along the Z direction. The sound outlet hole 1112 may be spaced apart from the heat dissipation hole 1111.
[0059] In this embodiment, the sound hole 1112 can serve as a channel for sound waves. The speaker assembly 40 generates sound waves by vibration, and the sound waves propagate to the external environment through the sound hole 1112 and are heard by the user. The design of the sound hole 1112 can increase the propagation area of the sound, thereby increasing the volume.
[0060] In addition, the sound outlet 1112 can also protect the internal structure of the speaker assembly 40. Since the speaker generates vibration and heat during operation, if there is no sound outlet 1112 to dissipate heat and release vibration, the internal structure of the speaker assembly 40 may be damaged or the performance may be degraded. The design of the sound outlet 1112 can effectively alleviate these problems and improve the service life and working stability of the speaker assembly 40.
[0061] For some possible implementations, see Figure 4 , Figure 4 11 is another structural schematic diagram of the rear housing 11 provided in an embodiment of the present application. The housing 10 may further include a grille 1114. The grille 1114 may be connected to the hole wall of the sound outlet hole 1112. The grille 1114 may cover the opening of the sound outlet hole 1112.
[0062] In this embodiment, the grille 1114 can protect the diaphragm of the speaker assembly 40 from being damaged due to external impact.
[0063] For other possible implementations, see Figure 5 , Figure 5It is another possible structural diagram of the rear shell 11 provided in an embodiment of the present application. The sound hole 1112 can also be located at the lower end of the rear shell 11, and the sound hole 1112 can penetrate the side plate 112 along the thickness direction of the side plate 112 of the rear shell 11. When the side plate 112 is provided with heat dissipation holes 1111, part of the heat dissipation holes 1111 can be used as sound holes 1112 to provide a sound outlet channel for the speaker assembly 40. The present application does not limit the position or shape of the sound hole 1112. The above description of the position of the sound hole 1112 is only for schematic illustration.
[0064] In this embodiment, part of the heat dissipation holes 1111 is used as the sound outlet holes 1112 , thereby reducing the processing steps of the sound outlet holes 1112 and making the appearance of the housing 10 of the electronic device 100 more concise.
[0065] Please refer to Figure 2 and Figure 3 The side shell 12 is disposed around the rear shell 11. Specifically, the side shell 12 may be connected to a side of the extension portion 113 of the rear shell 11 that is away from the bottom plate 111.
[0066] The display screen 20 can be connected to the side shell 12 and located at the end of the side shell 12 away from the rear shell 11. The display screen 20 can be used to display images. Exemplarily, the display screen 20 can be an organic light-emitting diode (OLED) display screen, an active matrix organic light-emitting diode, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, a micro organic light-emitting diode (MID) display screen, or a quantum dot light-emitting diode (QLED) display screen. The display screen 20 can also be a rigid display screen, such as a liquid crystal display 20 (LCD).
[0067] Please refer to Figure 6 , Figure 6 yes Figure 1The cross-sectional schematic diagram at BB is shown. The support plate 30 is located in the receiving space of the housing 10. The support plate 30 is located on the inner side of the side shell 12 and can be located between the display screen 20 and the rear shell 11. The support plate 30 is connected to the extension portion 113 of the rear shell 11. There is a gap between the support plate 30 and the bottom plate 111 of the rear shell 11.
[0068] See also Figure 7 , Figure 7 yes Figure 1 The structure diagram of the speaker assembly 40 is shown. The speaker assembly 40 includes a first sealing member 41, a second sealing member 42, a speaker 43 and an elastic member 44. The first sealing member 41, the second sealing member 42, the speaker 43, the support plate 30 and the rear shell 11 form a sealed cavity to form a rear cavity of the speaker assembly 40. The elastic member 44 fixes the speaker 43 on the support plate 30 or the bottom plate 111 of the rear shell 11.
[0069] It should be noted that Figure 7 The purpose is only to schematically describe the connection relationship between the first seal 41, the second seal 42, the speaker 43 and the elastic member 44, and it does not specifically limit the connection position, specific structure and quantity of each device. The structure illustrated in the embodiment of the present application does not constitute a specific limitation on the speaker assembly 40. In other embodiments of the present application, the speaker assembly 40 may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.
[0070] Specifically, see Figure 8 , Figure 8 yes Figure 6 An enlarged schematic diagram of point A of the electronic device 100 shown. The first seal 41 is connected between the support plate 30 and the bottom plate 111 of the rear shell 11. The first seal 41 can seal the bottom plate 111 and the support plate 30. The first seal 41 is arranged around the sound outlet 1112. The first seal 41, the support plate 30 and the bottom plate 111 of the rear shell 11 form an accommodating space. Among them, the material of the first seal 41 is a material that can undergo elastic deformation. Exemplarily, the material of the first seal 41 may include ethylene vinyl acetate copolymer (EVA), foam, rubber or silicone.
[0071] The speaker 43 is located in a containing space surrounded by the first sealing member 41, the support plate 30 and the bottom plate 111 of the rear housing 11. Exemplarily, the speaker 43 may be a dynamic speaker 43.
[0072] Please refer to Figure 7-Figure 9 , Fig. 9 yes Figure 7 The exploded schematic diagram of the loudspeaker 43 is shown. The loudspeaker 43 includes a mounting frame 431 , a folding ring 436 , a diaphragm 432 , a magnet 433 and a voice coil 434 .
[0073] The mounting frame 431 includes a first bracket 4351, a second bracket 4352, and a buffer pad 4353. The first bracket 4351 is connected to the outer periphery of the second bracket 4352. The buffer pad 4353 is connected between the first bracket 4351 and the second bracket 4352.
[0074] See also Fig.10 , Fig.10 yes Fig. 9 Schematic diagram of the structure of the first bracket 4351 shown. The first bracket 4351 can be a rectangular ring structure. The first bracket 4351 is provided with a bracket through hole 4351a, a mounting hole 4351b and a first limit portion 4351c. The bracket through hole 4351a runs through the middle area of the first bracket 4351. The bracket through hole 4351a can be circular. The number of mounting holes 4351b can be four, and the four mounting holes 4351b can be located at the four vertex positions of the rectangular first bracket 4351. The mounting hole 4351b runs through the first bracket 4351 along the thickness direction of the first bracket 4351. The mounting hole 4351b can also run through the peripheral side surface of the first bracket 4351.
[0075] In this embodiment, the mounting holes 4351b are used to accommodate the elastic member 44 so that the elastic member 44 can be fixedly connected to the mounting bracket 431. The mounting holes 4351b are arranged at the four corners of the first bracket 4351 to avoid the bracket through holes 4351a, so as to avoid interference between the second bracket 4352 and the elastic member 44 after the first bracket 4351 is assembled with the second bracket 4352 and the elastic member 44.
[0076] The number of the first limiting portions 4351c may be four. The four first limiting portions 4351c may be respectively disposed at the midpoints of the four edges of the first bracket 4351. Exemplarily, the first limiting portions 4351c may be blind holes, which are recessed on the surface of the first bracket 4351 in the opposite direction of the Z direction.
[0077] See also Fig.11 , Fig.11 yes Fig. 9The schematic diagram of the structure of the second bracket 4352 shown in FIG. The second bracket 4352 is provided with a first receiving groove 4352a, a second receiving groove 4352b, a magnet connection hole 4352c, a sound-transmitting hole 4352d and a second limiting portion 4352e. The first receiving groove 4352a is located in the middle area of the second bracket 4352. The first receiving groove 4352a is formed by a surface depression of the second bracket 4352 in the opposite direction of the Z direction. The second receiving groove 4352b surrounds the first receiving groove 4352a and has a gap with the first receiving groove 4352a. The second receiving groove 4352b is formed by a surface depression of the second bracket 4352 in the opposite direction of the Z direction. The depression depth of the second receiving groove 4352b may be less than the depression depth of the first receiving groove 4352a. The magnet connection hole 4352c penetrates the middle area of the bottom wall of the first receiving groove 4352a along the Z direction. The number of the sound-transmitting holes 4352d is multiple, and the multiple sound-transmitting holes 4352d all penetrate the bottom wall of the first receiving groove 4352a and / or the second receiving groove 4352b along the Z direction, and are spaced apart from the magnet connection hole 4352c. The number of the second limiting parts 4352e can be four. The four second limiting parts 4352e are arranged on the outer periphery of the second bracket 4352. Exemplarily, the second limiting part 4352e can be a through hole, and the through hole penetrates the edge area of the first bracket 4351 along the Z direction.
[0078] The second bracket 4352 is connected to the hole wall of the bracket through hole 4351a of the first bracket 4351. The second limiting body of the second bracket 4352 can be arranged corresponding to the first limiting body of the first bracket 4351. The through hole of the second limiting part 4352e is arranged corresponding to the blind hole of the first limiting part 4351c.
[0079] See also Fig.12 , Fig.12 yes Fig. 9 The structure diagram of the buffer pad 4353 is shown. The buffer pad 4353 is located between the first bracket 4351 and the second bracket 4352. Specifically, the buffer pad 4353 is annular. The buffer pad 4353 is provided with an avoidance hole 4353a. The number of the avoidance holes 4353a is the same as the number of the first limit portion 4351c, and the number of the avoidance holes 4353a can be four, and the four avoidance holes 4353a are arranged at intervals.
[0080] Please refer to Figure 7 , Figure 8 and Fig.12, the buffer pad 4353 is connected to the surface of the first bracket 4351 in the opposite direction to the Z direction, and the buffer pad 4353 surrounds the bracket through hole 4351a and is arranged at the periphery of the hole of the bracket through hole 4351a. Each avoidance hole 4353a is arranged corresponding to a first limiting portion 4351c. A avoidance hole 4353a is connected to a blind hole of a first limiting portion 4351c. The second bracket 4352 is connected to the side of the buffer pad 4353 away from the first bracket 4351. The periphery of the surface of the second bracket 4352 facing the Z direction is connected to the buffer pad 4353, and a second limiting portion 4352e of the second bracket 4352 is connected to a avoidance hole 4353a of the buffer pad 4353 and a first limiting portion 4351c.
[0081] The speaker assembly 40 may also be provided with a plurality of connecting pins (not shown). Each connecting pin is provided through a first limiting portion 4351c, a avoiding hole 4353a of a buffer pad 4353 and a second limiting portion 4352e to fix the first bracket 4351, the buffer pad 4353 and the second bracket 4352 together.
[0082] In this embodiment, the vibration of the voice coil 434 of the speaker 43 is transmitted to the second bracket 4352. The buffer pad 4353 can effectively prevent the vibration of the second bracket 4352 from being transmitted to the first bracket 4351, thereby preventing the speaker 43 from causing the mounting bracket 431 to resonate when vibrating to generate sound, and preventing the mounting bracket 431 from resonating with the speaker 43, resulting in sound distortion or reduced sound quality.
[0083] In addition, the buffer pad 4353 can also prevent the vibration of the speaker 43 from being transmitted to the support plate 30, thereby preventing the vibration of the support plate 30 from colliding with other components of the electronic device 100 to generate noise. Reducing the noise associated with the sound of the electronic device 100 can enhance the user experience, so that the user can enjoy purer, undisturbed sound and improve the user's listening experience.
[0084] Please refer to Figure 8 The magnet 433 passes through the magnet connection hole 4352c of the second bracket 4352. One end of the magnet 433 along the Z direction is protruded relative to the surface of the second bracket 4352 facing the Z direction, and one end of the magnet 433 in the opposite direction of the Z direction can be located in the first receiving groove 4352a.
[0085] The voice coil 434 is sleeved on one end of the magnet 433 facing the opposite direction of the Z direction. The voice coil 434 is disposed around the magnet 433. There is a gap between the voice coil 434 and the groove wall of the first receiving groove 4352a.
[0086] The fold ring 436 is spaced apart from the voice coil 434. The outer side of the fold ring 436 is connected to the side of the first bracket 4351 facing the rear housing 11, and the inner side of the fold ring 436 is connected to the edge of the diaphragm 432. Fig.13 , Fig.13 yes Fig. 9 The structure diagram of the folding ring 436 is shown in FIG. The folding ring 436 includes an elastic portion 4361, a first connecting portion 4362, and a second connecting portion 4363. The elastic portion 4361 may be a U-shaped elastic body and is arranged in a ring shape. The first connecting portion 4362 is connected to the inner side of the elastic portion 4361, and the first connecting portion 4362 may be in a ring shape. The second connecting portion 4363 is connected to the outer side of the elastic portion 4361, and the second connecting portion 4363 may be in a ring shape.
[0087] Please refer to Figure 8 , at least part of the elastic portion 4361 of the folded ring 436 is located in the second receiving groove 4352b. The elastic portion 4361 may be spaced apart from the groove wall of the second receiving groove 4352b. The second connecting portion 4363 is connected to the surface of the second bracket 4352 facing the Z direction. The second connecting portion 4363 is arranged around the second receiving groove 4352b. The first connecting portion 4362 is connected to the surface of the second bracket 4352 facing the Z direction. The first connecting portion 4362 is located between the first receiving groove 4352a and the second receiving groove 4352b. The first connecting portion 4362 may be arranged around the voice coil 434, and there is a gap between the first connecting portion 4362 and the voice coil 434.
[0088] In this embodiment, the folding ring 436 can block the air flow in front and behind the diaphragm 432. The folding ring 436 can prevent the sound radiated backwards generated by the vibration of the diaphragm 432 from going around to the front and causing an acoustic short circuit, thereby ensuring the clarity and accuracy of sound transmission.
[0089] The folding ring 436 enables the diaphragm 432 to move axially along the Z direction while limiting its movement in other directions, which helps to maintain the stable position of the voice coil 434 connected to the diaphragm 432 in the magnetic field and prevent the voice coil 434 from colliding with the magnet 433.
[0090] The diaphragm 432 is connected to the surface of the first connecting portion 4362 of the folding ring 436 away from the second bracket 4352. The diaphragm 432 is located on the side of the voice coil 434 away from the second bracket 4352. The middle area of the diaphragm 432 is connected to the voice coil 434. The diaphragm 432 is arranged opposite to the sound outlet hole 1112 of the rear housing 11. The diaphragm 432 is recessed relative to the surface of the bottom plate 111 of the rear housing 11 away from the support plate 30.
[0091] In this embodiment, when current passes through the voice coil 434, the voice coil 434 is acted upon by a force in the magnetic field of the magnet 433. According to Faraday's law of electromagnetic induction, when current passes through a wire, a magnetic field is generated around the wire, and this magnetic field interacts with the magnetic field of the magnet 433. Since the current is changing, the force on the voice coil 434 in the magnetic field of the magnet 433 is also constantly changing, thereby causing the voice coil 434 and the diaphragm 432 connected thereto to vibrate. The vibration of the diaphragm 432 will push the surrounding air to change in density, thereby forming sound waves.
[0092] When the diaphragm 432 vibrates, it causes the air on both sides to vibrate. The sound-transmitting holes 4352d help the sound waves on one side of the diaphragm 432 to propagate freely in the accommodating space.
[0093] The diaphragm 432 is recessed relative to the rear housing 11 so that the diaphragm 432 is not easily impacted by the outside, thereby maintaining the structural integrity of the speaker 43.
[0094] In addition, since the diaphragm 432 is directly facing the sound outlet 1112, when the speaker 43 is working, the sound waves can be directly transmitted to the outside from the sound outlet 1112, and the sound waves will not be blocked by the shell 10 of the electronic device 100, thereby preventing the sound waves from being reflected or scattered, preventing the original waveform of the sound waves from being affected, and preventing the sound quality from becoming blurred, turbid, lacking clarity and transparency.
[0095] Please refer to Figure 8 , the second seal 42 is located in the accommodating space. The second seal 42 can be sealed and connected between the second connection part 4363 of the folding ring 436 and the bottom plate 111 of the rear shell 11. Specifically, the second seal 42 is annular. One side of the second seal 42 in the thickness direction abuts against the surface of the second connection part 4363 of the folding ring 436 away from the second bracket 4352, and the other side in the thickness direction abuts against the bottom plate 111 of the rear shell 11. The second seal 42 is arranged around the sound outlet 1112. The second seal 42 is located on the inner side of the first seal 41. That is, the first seal 41 is arranged around the second seal 42. There may be a gap between the first seal 41 and the second seal 42. Among them, the material of the second seal 42 can be the same as the material of the first seal 41. The material of the second seal 42 can refer to the description of the material of the first seal 41 above, and the present application will not repeat it here.
[0096] In this embodiment, the first sealing member 41 seals the support plate 30 and the rear housing 11. The second sealing member 42 seals the rear housing 11 and the speaker 43. The support plate 30, the first sealing member 41, the rear housing 11, the second sealing member 42, the folding ring 436 and the diaphragm 432 of the speaker 43 form a closed cavity, which can be used as the rear cavity of the speaker 43.
[0097] At present, some large-screen electronic devices such as televisions, monitors or all-in-one computers need to be equipped with larger speakers to provide higher power output and louder volume. Since the speakers in large-screen devices have a large volume and a wide sound range, a separate cabinet is generally set up to isolate the sound waves in front and behind the speaker diaphragm to prevent the front and back sound waves of the diaphragm from canceling each other and causing an acoustic short circuit. The cabinet will vibrate when the speaker is working, so the cabinet needs to be spaced apart from the housing of the electronic device to prevent the cabinet from vibrating and colliding with the housing to generate noise. Therefore, the overall thickness of the electronic device needs to take into account the thickness of the cabinet and the distance between the cabinet and the housing, resulting in the inability to further thin the electronic device, and the volume of the cabinet is also very limited, resulting in a smaller back cavity provided by the cabinet for the speaker, which affects the low-frequency performance of the speaker.
[0098] The support plate 30 and the rear shell 11 of the present application directly form the rear cavity of the speaker 43 through the cooperation of the seal, and there is no need to set up a box for the speaker 43 separately, thereby saving the cost of setting up a box for the speaker 43 separately, and the thickness of the electronic device 100 can be further reduced. As a result, the electronic device 100 can be miniaturized and thin, meeting the current user's requirements for the appearance of the electronic device 100. Moreover, the installation space required for relatively thin electronic products is smaller, so that they can be applied to more usage scenarios.
[0099] Since the support plate 30 and the rear shell 11 can form the rear cavity of the speaker 43 through the seal, the volume of the rear cavity is not limited by the separate box, which facilitates the provision of a larger rear cavity space for the speaker 43. The larger the rear cavity space of the speaker 43, the lower the low-frequency cutoff frequency will generally be, which means that the speaker 43 can better reproduce low-frequency sounds, making the sound quality fuller and rounder.
[0100] At the same time, the sealing of the rear cavity also has an important influence on the performance of the speaker 43. The first sealing member 41 and the second sealing member 42 can ensure good sealing of the rear cavity to avoid negative impact of sound leakage on the sound quality.
[0101] It should be noted that the electronic device 100 provided in the present application can also be some small-screen electronic devices 100 that need to be equipped with speakers 43. For example, the electronic device 100 can include a smart watch, a smart wristband, a smart phone, a personal digital assistant (PDA) computer, a tablet computer, a laptop computer, a car computer, smart glasses, etc.
[0102] See also Fig.14 , Fig.14 for Figure 1 The electronic device 100 and the frequency response curves of the conventional electronic device are shown. Fig.14 L1 is an embodiment of this application Figure 8 A frequency response curve of the electronic device 100 is provided. Fig.15 L2 is the frequency response curve of an electronic device in which the speaker is provided with a separate cabinet in the prior art. It can be seen from the figure that when the frequency is less than 100Hz, the decibel of L1 is greater than the decibel of L2. Compared with a speaker with a separate cabinet as a back cavity, the present application cancels the cabinet so that a back cavity is directly formed between the support plate 30 and the rear shell 11, which can improve the low-frequency performance of the speaker 43. The electronic device 100 with good low-frequency effect can more accurately restore the low-frequency signal, making the sound quality more mellow, deep and powerful. The low-frequency part can supplement the missing or inconspicuous parts of the music, such as drums, bass, etc., to make the music richer and complete. As the basis of music, low frequency can form the bottom-level basic sound, contrast and set off with other frequency bands, making the music more layered and three-dimensional. This sense of layering can make the music fuller and more three-dimensional, and enhance the listening experience.
[0103] One end of the elastic member 44 may be connected to the side of the support plate 30 away from the display screen 20, and the other end of the elastic member 44 may be connected to the mounting bracket 431. Fig.15 , Fig.15 yes Figure 1 The schematic diagram of the structure of a support plate 30 and an elastic member 44 is shown. The elastic member 44 may include a positioning column 441 and a flexible member 442. The positioning column 441 is located in the accommodation space surrounded by the support plate 30, the rear housing 11 and the first sealing member 41, and the positioning column 441 is convexly arranged on the surface of the support plate 30 away from the display screen 20. The flexible member 442 is sleeved on the outer periphery of the positioning column 441.
[0104] At least part of the positioning column 441 is located in the mounting hole 4351b and is spaced apart from the hole wall of the mounting hole 4351b. The flexible member 442 is connected between the positioning column 441 and the mounting hole 4351b. The outer periphery of the flexible member 442 can be connected to the hole wall of the mounting hole 4351b of the first bracket 4351 of the speaker 43. The flexible member 442 passes through the mounting hole 4351b of the first bracket 4351 and is clamped with the first bracket 4351.
[0105] In this embodiment, the flexible member 442 can play a buffering role between the support plate 30 and the mounting bracket 431. When the speaker 43 is working, the speaker 43 may drive the first bracket 4351 to vibrate, and the flexible member 442 can absorb the vibration of the first bracket 4351 to prevent the vibration of the first bracket 4351 from being transmitted to the support plate 30, thereby preventing the support plate 30 from vibrating and generating abnormal vibration noise.
[0106] In some other possible implementations, one end of the elastic member 44 may also be connected to the side of the rear housing 11 facing the support plate 30, and the other end of the elastic member 44 is connected to the mounting bracket 431, so that the speaker 43 is fixedly connected to the rear housing 11. Specifically, the positioning column 441 of the elastic member may be convexly disposed on the surface of the rear housing 11 facing the support plate 30. The flexible member 442 is sleeved on the outer periphery of the positioning column 441. The flexible member 442 is connected between the positioning column 441 and the hole wall of the mounting hole 4351b.
[0107] For another possible embodiment, please refer to Fig.15 The support plate 30 is further provided with ribs 31. The number of ribs 31 can be multiple. The multiple ribs 31 can be protruded from the surface of the support plate 30 in the opposite direction of the Z direction. The multiple ribs 31 can extend along the X direction or the Y direction. The multiple intersecting ribs 31 are arranged around the speaker 43. The ribs 31 can enclose to form an accommodating space.
[0108] The first seal 41 is connected to the side of the rib 31 facing away from the support plate 30, and is sealed between the rib 31 and the bottom plate 111 of the rear shell 11, so that the support plate 30, the rib 31, the first seal 41, the bottom plate 111 of the rear shell 11, the second seal 42 and the diaphragm 432 of the speaker 43 form a sealed cavity to isolate the sound waves emitted by the diaphragm 432 toward the Z direction.
[0109] In this embodiment, in some usage scenarios, the spacing between the support plate 30 and the bottom plate 111 of the rear shell 11 is relatively large. When the first seal 41 is connected between the support plate 30 and the bottom plate 111 of the rear shell 11, the first seal 41 may not be able to form sufficient contact pressure between the support plate 30 and the bottom plate 111, resulting in poor sealing effect. In addition, since the material of the first seal 41 is generally a flexible material with elastic deformation, the flexible material may be sensitive to environmental factors such as temperature, humidity and chemicals. In a larger gap, the first seal 41 may be more susceptible to these factors, resulting in volume shrinkage, thereby reducing its sealing stability.
[0110] The ribs 31 can reduce the distance between the support plate 30 and the rear shell 11, so that the first seal 41 can form a close contact with the ribs 31 and the bottom plate 111 of the rear shell 11, and generate sufficient contact pressure, thereby providing an effective sealing effect, avoiding sound leakage from the rear cavity of the speaker 43, thereby avoiding acoustic short circuit of the speaker 43, and increasing the low-frequency performance of the speaker 43, so that the sound emitted by the speaker 43 is fuller and more three-dimensional, thereby enhancing the user's listening experience.
[0111] The above are exemplary embodiments of the present application. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made thereto without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.
Claims
1. An electronic device, characterized in that: include: Display screen; A support plate connected to the non-display side of the display screen; A rear shell, located on a side of the support plate away from the display screen, the rear shell being provided with a sound outlet hole, the sound outlet hole penetrating the rear shell along a thickness direction of the rear shell; a first sealing member, sealingly connected between the support plate and the rear shell, wherein the first sealing member, the support plate and the rear shell form an accommodating space, and the accommodating space is communicated with the sound outlet; A loudspeaker comprises a mounting frame and a diaphragm, wherein the mounting frame and the diaphragm are both located in the accommodating space, the mounting frame is sealedly connected to the periphery of the sound outlet, the diaphragm is connected to a side of the mounting frame away from the supporting plate, and the diaphragm is arranged opposite to the sound outlet.
2. The electronic device according to claim 1, characterized in that: The electronic device further comprises an elastic member, one end of which is connected to a surface of the support plate facing away from the display screen, and the other end of which is connected to the mounting bracket.
3. The electronic device according to claim 1, characterized in that: The electronic device further comprises an elastic member, one end of which is connected to the surface of the rear shell facing the support plate, and the other end of which is connected to the mounting bracket.
4. The electronic device according to claim 2 or 3, characterized in that: The mounting frame is provided with a mounting hole, and the mounting hole penetrates the mounting frame along the thickness direction of the mounting frame; The elastic member includes a positioning column and a flexible member. The positioning column is protruded from the surface of the support plate away from the display screen, penetrates the mounting hole, and is spaced apart from the hole wall of the mounting hole. The flexible member is sleeved on the outer periphery of the positioning column and connected between the positioning column and the mounting hole.
5. The electronic device according to any one of claims 1 to 3, characterized in that: A rib is protruded from a surface of the support plate facing away from the display screen, the first seal is connected between the rib and the rear shell, and the rib, the first seal, the support plate and the rear shell form the accommodating space.
6. The electronic device according to claim 4, characterized in that: The electronic device further comprises a second sealing member, the second sealing member is located in the accommodating space, the second sealing member is sealingly connected between the mounting bracket and the rear shell, and the second sealing member is arranged around the sound outlet and the diaphragm.
7. The electronic device according to claim 6, characterized in that: The speaker also includes a folding ring, the inner side of which is connected to the edge of the diaphragm, the outer side of which is connected to the surface of the mounting frame facing the rear shell, and the second sealing member is sealingly connected between the outer side of the folding ring and the rear shell.
8. The electronic device according to any one of claims 1 to 3, characterized in that: The diaphragm is arranged concavely relative to a surface of the rear shell facing away from the support plate.
9. The electronic device according to claim 7, characterized in that: The mounting frame includes a first bracket, a second bracket and a buffer member, the first bracket is connected to the outer periphery of the second bracket, the buffer member is connected between the first bracket and the second bracket, the first bracket is provided with the mounting hole, and the second bracket is connected to the outer side of the folding ring.
10. The electronic device according to claim 7, characterized in that: The loudspeaker further comprises a voice coil connected to a side of the diaphragm facing away from the rear housing.
11. The electronic device according to any one of claims 1 to 3, characterized in that: The rear shell includes a side plate and a bottom plate, the side plate is bent and connected to the bottom plate, and the side of the side plate facing away from the bottom plate is connected to the support plate; The sound outlet hole penetrates the bottom plate along the thickness direction of the bottom plate, or the sound outlet hole penetrates the side plate along the thickness direction of the side plate.
12. The electronic device according to any one of claims 1 to 3, characterized in that: The electronic device further comprises a grille connected to a hole wall of the sound outlet hole.