Electronic device

Abstract

The present application belongs to the technical field of loudspeakers. Disclosed is an electronic device. The electronic device comprises: a device shell, a display screen, a sealing structure and a loudspeaker, wherein the device shell has a first side face and a second side face opposite each other, a first through hole provided on the device shell running through the first side face and the second side face; the display screen is located on the side where the first side face is located; the sealing structure is located between the device shell and the display screen, the display screen, the sealing structure and the device shell enclosing a first cavity, which is in communication with the first through hole; the loudspeaker is located on the side where the second side face is located, the loudspeaker comprises a housing, the housing having an inner cavity, which comprises a second cavity and a third cavity, the second cavity being in communication with the first through hole. The present application is highly cost-effective, and enables the loudspeaker to have good sound quality performance, significantly improving sound quality.

Description

electronic devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on September 18, 2023, with application number 202311205257.6 and application name “Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of loudspeakers, and in particular to an electronic device. Background Art

[0003] Electronic devices with sound-generating capabilities, such as mobile phones, laptops, tablets, and smartphones, typically have speakers to generate sound to meet user needs. However, with the trend toward thinner and lighter electronic devices, thinning the internal components of these devices has become a growing trend. Speakers are a factor contributing to overall device thinning. When speakers are thinned, their volume also decreases, which in turn affects their sound quality. Speaker sound quality is related to the size of the speaker's back chamber. Insufficient back chamber volume results in poor low-frequency performance and increased power consumption. To alleviate this problem, bass powder can be used to virtually expand the back chamber, or higher-performance power amplifiers can be used to boost the electrical signal to improve low-frequency sound quality. However, bass powder is expensive, and the performance of power amplifiers is limited, so its improvement is limited.

[0004] Summary of the Invention

[0005] The present application provides an electronic device to solve the technical problems of high cost when using bass powder and limited improvement effect of the power amplifier due to its own performance limitations.

[0006] The technical solution is as follows:

[0007] A first aspect of the present application provides an electronic device, comprising: a device housing, a display screen, a sealing structure, and a speaker;

[0008] The device housing has a first side surface and a second side surface opposite to each other, and the device housing has a first through hole penetrating the first side surface and the second side surface;

[0009] The display screen is located on the side where the first side surface is located;

[0010] The sealing structure is located between the device housing and the display screen, and the display screen, the sealing structure and the device housing form a first cavity, and the first cavity is connected to the first through hole;

[0011] The speaker is located on the side where the second side surface is located. The speaker includes a shell. The shell has an inner cavity. The inner cavity includes a second cavity and a third cavity. The second cavity is connected to the first through hole.

[0012] By adopting the above scheme, the gap space formed between the display screen and the device shell is utilized to expand the sound cavity of the speaker. For example, the volume of the back cavity of the speaker can be expanded. After a first through hole is set on the device shell, the second cavity and the first cavity of the speaker are connected by the first through hole, and a sealing structure is used to mark out a cavity of the required volume in the gap space between the display screen and the device shell, and the sealing performance of the first cavity is ensured by the sealing structure, so that the volume of the sound cavity of the speaker can be increased. In this way, the back cavity of the speaker can be expanded, and compared with the higher-priced bass powder used in the related art, the method of expanding the back cavity in this application has a higher cost-effectiveness. Compared with the power amplifier in the related art, since the first cavity of the required volume can be marked out as needed by using the sealing structure, the volume of the back cavity can be expanded as needed, which can enable the speaker to have better sound quality performance and the sound quality improvement effect is more obvious.

[0013] In some implementations, the speaker further includes a core installed in the inner cavity to separate the inner cavity into the second cavity and the third cavity.

[0014] By adopting the above scheme, the core serves as the sound-producing component of the speaker, and the speaker can produce sound through the vibration of the core, and the inner cavity is divided into two different cavities by the core, so that the speaker has a front cavity and a rear cavity; the front cavity can be the third cavity, and the rear cavity can include the second cavity; the front cavity is a sound reflection area, which has the effect of amplifying the sound, and the rear cavity has the effect of enhancing the intensity of the sound.

[0015] In some implementations, the core, the outer shell, and the device housing form the second cavity.

[0016] By adopting the above scheme, the second cavity of the speaker can be an open cavity, that is, when the speaker is not installed on the electronic device, the second cavity is open, and after the speaker is installed on the electronic device, the opening of the second cavity is covered by the device shell; adopting an open second cavity can correspondingly reduce the components that seal the second cavity, which is conducive to reducing the thickness and weight of the speaker, and the thickness of the speaker is parallel to the thickness of the electronic device. After reducing the thickness and weight of the speaker, it is also conducive to reducing the lightness and thinness of the electronic device.

[0017] In some implementations, the speaker further includes a cover plate, which is fixedly connected to the housing, and the housing, the core, and the cover plate form the third cavity.

[0018] By adopting the above solution, the cover plate can cover the third cavity of the speaker.

[0019] In some implementations, the sealing structure includes a plurality of sealing strips, wherein the plurality of sealing strips are connected end to end to form a closed pattern;

[0020] The first through hole is located inside the closed figure.

[0021] By adopting the above solution, a closed figure is formed so that the first cavity can form a relatively closed space; and the first through hole is located inside the closed figure, so that the first cavity can communicate with the second cavity.

[0022] In some implementations, one side of the sealing strip is bonded to the first side, and the other opposite side of the sealing strip is in contact with the display screen;

[0023] Alternatively, one side of the sealing strip abuts against the first side, and the other side opposite to the sealing strip is bonded to the display screen;

[0024] Alternatively, one side of the sealing strip is bonded to the first side, and the other side opposite to the sealing strip is bonded to the display screen;

[0025] Alternatively, one side surface of the sealing strip abuts against the first side surface, and the other side surface opposite to the sealing strip abuts against the display screen.

[0026] By adopting the above solution, only one of the two opposing sides of the sealing strip is bonded to the corresponding component, the display screen, or the first side, or both opposing sides of the sealing strip are bonded to the corresponding components, which facilitates maintenance and assembly. When the sealing strip is bonded to the first side and abuts the display screen, the assembly precision between the display screen and the device housing is better controlled because the sealing strip is not bonded to the display screen. Furthermore, if the display screen is damaged, it is easy to remove and replace the display screen without damaging the existing sealing strip. Therefore, the sealing performance of the first cavity can be maintained after replacing the new display screen. Similarly, when the sealing strip abuts the first side and adheres to the display screen, the installation precision of the display screen can be controlled. Furthermore, when replacing the display screen, a sealing strip can be pre-attached under the display screen. When the sealing strip abuts both the display screen and the device housing, replacement of the sealing strip is facilitated. Bonding both opposing sides of the sealing strip effectively ensures the sealing performance of the first cavity.

[0027] In some implementations, the first side surface has a closed positioning groove, and at least a portion of the sealing strip is located in the positioning groove.

[0028] By adopting the above solution, the positioning groove can facilitate the positioning of the sealing strip during installation and, to a certain extent, reduce the possibility of the sealing strip moving during use.

[0029] In some implementations, the positioning groove is formed by a laser engraving process.

[0030] By adopting the above solution, it is convenient to groove the device housing.

[0031] In some implementations, the sealing structure is made of an elastic material.

[0032] By adopting the above solution, the sealing structure can have a certain amount of compression, thereby ensuring the sealing performance between the display screen and the device housing, thereby ensuring the sealing performance of the first cavity.

[0033] In some implementations, the elastic material is foam or silicone.

[0034] By adopting the above solution, the foam or silicone cavity has good elasticity and the cost is relatively low.

[0035] In some implementations, the second side surface has a recessed groove, and the first through hole is located at the bottom of the recessed groove to penetrate the first side surface and the second side surface;

[0036] The housing includes a frame, and the height of the frame extends along the thickness direction of the electronic device;

[0037] The frame is arranged around the edge of the recessed groove.

[0038] By adopting the above solution, a recessed groove is provided on the second side surface, and when the speaker is mounted on the device housing, the recessed groove is used to expand the rear cavity of the speaker.

[0039] In some implementations, the housing is sealed to an edge of the recessed groove.

[0040] By adopting the above solution, the sealing performance of the third cavity at the connection between the outer shell and the recessed groove can be ensured by sealing the connection between the outer shell and the recessed groove edge.

[0041] In some implementations, the first cavity and the second cavity are directly connected to the first through hole, respectively.

[0042] By adopting the above solution, direct communication between the first cavity and the second cavity can be achieved, reducing the length of the communication path between the two. This design also simplifies the assembly method of the speaker in the electronic device and is conducive to the lightweight and thinning of the electronic device.

[0043] In some implementations, the rear cavity of the speaker includes the first cavity and the second cavity; and the front cavity of the speaker is the third cavity.

[0044] By adopting the above solution and using the first cavity and the second cavity as part of the rear cavity, the speaker can have a rear cavity with a larger volume.

[0045] In some embodiments, when the first cavity is greater than or equal to 0.1 cubic centimeter, the orifice area of ​​the first through hole is not less than 1.8 square millimeters; when the first cavity is less than 0.1 cubic centimeter, the orifice area of ​​the first through hole is not less than 1.5 square millimeters.

[0046] By adopting the above solution, the opening area of ​​the first through hole is limited to adapt to the volume of the first cavity, so as to ensure the frequency response performance of the speaker after the rear cavity is expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0048] FIG2 is a schematic diagram of the exploded structure of an electronic device provided in an embodiment of the present application;

[0049] FIG3 is a top view of the electronic device in FIG1 ;

[0050] FIG4 is a cross-sectional view along line DD in FIG3 ;

[0051] Figure 5 is a cross-sectional view taken along line EE in Figure 3;

[0052] FIG6 is a partial enlarged schematic diagram of point G in FIG5 ;

[0053] FIG7 is a cross-sectional view taken along line FF in FIG3 ;

[0054] FIG8 is a partial enlarged schematic diagram of point H in FIG7;

[0055] FIG9 is a schematic structural diagram of an electronic device without a display screen installed in an embodiment of the present application;

[0056] FIG10 is a schematic diagram of a partial structure of another electronic device without a display screen installed according to an embodiment of the present application;

[0057] FIG11 is a schematic diagram of a partial structure of an electronic device without a display screen and a sealing structure installed in an embodiment of the present application;

[0058] FIG12 is a schematic structural diagram of an electronic device without a rear cover installed in an embodiment of the present application;

[0059] FIG13 is a schematic structural diagram of the electronic device in an embodiment of the present application when the back cover and the speaker are not installed;

[0060] FIG14 is a structural schematic diagram of FIG13 from another perspective;

[0061] FIG15 is a schematic structural diagram of a loudspeaker in which the second cavity is open in an embodiment of the present application;

[0062] FIG16 is a schematic structural diagram of a speaker housing and a cover plate connected together in an embodiment of the present application;

[0063] FIG17 is a schematic diagram showing a comparison of the frequency response curves of the loudspeaker before and after the rear cavity expansion.

[0064] The meanings of the figures are as follows:

[0065] 101. Display screen; 102. Device housing; 103. Sound outlet; 104. Sealing structure; 105. Speaker; 106. Back cover; 107. First side; 108. Second side; 109. First through hole; 110. First cavity; 111. Inner cavity; 112. Second cavity; 113. Third cavity; 114. Cover plate; 115. Outer shell; 116. Sealing strip; 117. First sub-cavity; 118. Second sub-cavity; 119. Third sub-cavity; 120. Positioning groove; 121. Mounting hole; 122. Recessed groove; 123. Frame; 124. Positioning platform; 125. Core; 126. Sealing ring. DETAILED DESCRIPTION

[0066] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0067] It should be understood that the “multiple” mentioned in this application refers to two or more. In the description of this application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solution of this application, words such as “first” and “second” are used to distinguish between identical or similar items with basically the same functions and effects. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not necessarily limit them to be different.

[0068] The electronic device provided in the embodiments of the present application is explained in detail below.

[0069] Referring to FIG. 1 , FIG. 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may be a mobile phone, a tablet computer, a laptop computer, a camera, a video recorder, a smartwatch, or other electronic device. The mobile phone may be a candy bar phone or a foldable phone. The embodiments of the present application do not impose any particular restrictions on the specific form of the above-mentioned electronic device. For ease of explanation and understanding, the electronic device is described as a mobile phone.

[0070] For ease of description, the length direction of the electronic device is defined as AA direction, the width direction of the electronic device is defined as BB direction, and the thickness direction of the electronic device is defined as CC direction. The AA direction, BB direction, and CC direction are perpendicular to each other.

[0071] 1 , the electronic device further includes a display screen 101 and a device housing 102 , wherein the display screen 101 is connected to the device housing 102 ; the device housing 102 may be a middle frame; and the display screen 101 may be a liquid crystal display screen 101 or an organic light emitting diode display screen 101 , etc.

[0072] As shown in FIG1 , a sound outlet 103 is provided on the side of the device housing 102 . There are multiple sound outlets 103 , which are spaced apart. The sound outlets 103 can be located at the bottom of the electronic device. The direction from the top to the bottom of the electronic device is the length direction of the electronic device.

[0073] Referring to FIG. 2 , FIG. 2 is a schematic diagram of the exploded structure of an electronic device provided in an embodiment of the present application. In some embodiments, the electronic device further includes a sealing structure 104, a speaker 105, and a back cover 106. The back cover 106 is connected to the device housing 102. The back cover 106 and the display screen 101 are located on opposite sides of the device housing 102, and the speaker 105 and the back cover 106 are located on the same side of the device housing 102. The device housing 102 has a first side 107, the display screen 101 is located on the side where the first side 107 is located, and the sealing structure 104 is also located on the side where the first side 107 is located. The sealing structure 104 is located between the display screen 101 and the device housing 102. The device housing 102 also has a first through hole 109, which is located within the shape enclosed by the sealing structure 104. The display screen 101 is bonded to the first side 107.

[0074] It should be noted that the back cover 106 and the device housing 102 can be a split structure and fixedly connected, or they can be an integrated structure.

[0075] As shown in conjunction with Figures 3 and 4 , Figure 3 is a top view of the electronic device in Figure 1 , and Figure 4 is a cross-sectional view taken along line DD in Figure 3 ; in some embodiments, the device housing 102 further has a second side surface 108 opposite the first side surface 107 , and a first through hole 109 extends through the first side surface 107 and the second side surface 108 . Because the first through hole 109 extends through the first side surface 107 and the second side surface 108 , the first through hole 109 connects the two opposite sides of the device housing, thereby allowing the space formed between the display screen 101 and the device housing 102 to communicate with the space on the other side of the device housing 102 . The display screen 101 , the sealing structure 104 , and the device housing 102 enclose a first cavity 110 . Specifically, one side surface of the display screen 101 , the sealing structure 104 , and the first side surface 107 of the device housing 102 together enclose the first cavity 110 . The first cavity 110 is connected to the first through hole 109 . The speaker 105 is located on the side where the second side surface 108 is located. The speaker 105 includes a shell 115. The shell 115 has an inner cavity 111. The inner cavity 111 includes a second cavity 112 and a third cavity 113. The second cavity 112 is connected to the first through hole 109.

[0076] The electronic device in at least one embodiment of the present application utilizes the gap space formed between the display screen 101 and the device housing 102 to expand the sound cavity of the speaker 105. For example, the volume of the back cavity of the speaker 105 can be expanded. After a first through hole 109 is provided on the device housing 102, the second cavity 112 and the first cavity 110 of the speaker 105 are connected by utilizing the first through hole 109, and a sealing structure 104 is used to mark out a cavity of the required size in the gap space between the display screen 101 and the device housing 102. The sealing structure 104 is used to ensure the sealing performance of the first cavity 110, thereby increasing the volume of the sound cavity of the speaker 105.

[0077] This method can be used to expand the back cavity of the speaker 105. Compared with the more expensive bass powder used in the related art, the method of expanding the back cavity in this application has a higher cost-effectiveness and more significant cost savings. Compared with the power amplifier in the related art, since the first cavity 110 of the required volume can be divided out as needed by the sealing structure 104, the volume of the back cavity can be expanded as needed, which can make the speaker 105 have better sound quality performance and the sound quality improvement effect is more obvious. Since the first cavity 110 is between the display screen 101 and the first side 107, and the required space is divided out by the sealing structure 104, the first cavity 110 can have better integrity and can have a thinner shape when the electronic device is in a thinner state. It can also achieve physical expansion of the back cavity, thereby ensuring that the back cavity meets the maximum output requirements of the speaker 105 performance, ensuring the sound quality performance of the speaker 105, and improving the overall acoustic performance of the speaker 105.

[0078] In one application scenario, compared with the speaker 105 without rear cavity expansion, the electronic device using the embodiment of the present application to expand the rear cavity of the speaker 105 increases the volume of the rear cavity by at least 0.1 cubic centimeters.

[0079] It should be noted that in some other possible cases, in order to further increase the volume of the rear cavity and without considering cost, bass powder can also be filled in the first cavity 110. Bass powder can improve the sound performance of the speaker 105. It mainly enhances the bass frequency band through the superposition of sound wave reflection, while achieving the effect of virtual expansion and increasing the volume.

[0080] In some embodiments, the display screen 101 may include a cover plate 114 and a display layer, with a gap space formed between the display layer of the display screen 101 and the first side 107, and the sealing structure 104 located between the display layer and the first side 107. Thus, the sealing structure 104, the side of the display layer facing the first side 107, and the first side 107 of the device housing 102 together form a first cavity 110. The side of the display layer of the display screen 101 facing the first side 107 is generally a metal structure, which may be, for example, copper foil or a steel sheet.

[0081] In some embodiments, the shape of the first through hole 109 can be circular, polygonal, or elliptical. The polygonal shape can be a quadrilateral, a pentagon, or a hexagon. The shape of the first through hole 109 can be determined according to actual needs.

[0082] As shown in FIG4 , in some embodiments, the speaker 105 further includes a core 125, which is installed in the inner cavity 111 to separate the inner cavity 111 into a second cavity 112 and a third cavity 113. The core 125 serves as the sound-emitting component of the speaker 105. The vibration of the core 125 enables the speaker 105 to produce sound, and the inner cavity 111 is divided into two different cavities by the core 125, so that the speaker 105 has a front cavity and a rear cavity; the front cavity can be the third cavity 113, and the rear cavity can include the second cavity 112. Since the first cavity 110 is connected to the second cavity 112 through the first through hole 109, the rear cavity also includes the first cavity 110; the front cavity is a sound reflection area, which has the effect of amplifying the sound, and the rear cavity has the effect of increasing the intensity of the sound.

[0083] 4 , in some embodiments, the core 125, the outer shell 115 and the device housing 102 form a second cavity 112; specifically, the core 125, the outer shell 115 and the second side surface 108 of the device housing 102 form the second cavity 112, so that the second cavity 112 of the speaker 105 is an open cavity, that is, when the speaker 105 is not installed on the electronic device, the second cavity 112 is open, and after the speaker 105 is installed on the electronic device, the opening of the second cavity 112 is covered by the device housing 102; the use of an open second cavity 112 correspondingly reduces the number of components sealing the second cavity 112, which is beneficial to reducing the thickness and weight of the speaker 105, and the thickness of the speaker 105 is parallel to the thickness of the electronic device. After reducing the thickness and weight of the speaker 105, it is also beneficial to reduce the thinness of the electronic device.

[0084] As shown in FIG4 , in some embodiments, the speaker 105 further includes a cover 114, which is fixedly connected to the housing 115. The housing 115, the core 125, and the cover 114 enclose a third cavity 113. The cover 114 can cover the third cavity 113 of the speaker 105. In one embodiment, the cover 114 and the housing 115 are an integral structure. The speaker 105 can have a certain length, width, and thickness. The thickness direction of the speaker 105 is parallel to the thickness direction of the electronic device; the length direction of the speaker 105 is parallel to the width direction of the electronic device; and the width direction of the speaker 105 is parallel to the length direction of the electronic device.

[0085] It should be noted that, in some other possible embodiments, the cover plate 114 and the housing 115 may be separate structures, and the cover plate 114 and the housing 115 may be fixedly connected by screws or adhesive. In addition, in some other possible embodiments, the cover plate 114 may be omitted, that is, the speaker 105 has an open third cavity 113, which can reduce the thickness of the speaker 105; the third cavity 113 is also open, and the third cavity 113 is covered by the back cover 106 of the electronic device, and the back cover 106 and the housing 115 are sealed to achieve a seal of the third cavity 113 at the connection between the back cover 106 and the housing 115.

[0086] As shown in Figure 4, the first cavity 110 and the second cavity 112 are directly connected to the first through hole 109 respectively; through the direct connection, direct connection between the first cavity 110 and the second cavity 112 can be achieved, reducing the length of the connection path between the two, and this design also simplifies the assembly method of the speaker 105 in the electronic device, and is conducive to the lightweight and thinning of the electronic device. The opening area of ​​the first through hole 109 affects the frequency response performance of the speaker 105 after the rear cavity is expanded. If the opening area of ​​the first through hole 109 is too small, the speaker's Q value (Q value is the quality factor) will increase, resulting in a deterioration in the mid-frequency range. This is reflected in the speaker's frequency response curve as a notch at the mid-frequency range, affecting the sound quality. Therefore, the opening area of ​​the first through hole 109 needs to be limited. When the first cavity 110 is greater than or equal to 0.1 cubic centimeters, the opening area of ​​the first through hole 109 needs to be no less than 1.8 square millimeters. When the first cavity 110 is less than 0.1 cubic centimeters, the opening area of ​​the first through hole 109 needs to be no less than 1.5 square millimeters to ensure the frequency response performance of the speaker 105 after the rear cavity is expanded. The volume of the first cavity 110 is positively correlated with the opening area of ​​the first through hole 109. That is, the larger the volume of the first cavity 110, the larger the opening area of ​​the first through hole 109 is required. The volume of the first cavity 110 can be 0.1 cubic centimeters to 0.6 cubic centimeters. For example, the volume of the first cavity 110 can be 0.6 cubic centimeters, 0.5 cubic centimeters, 0.4 cubic centimeters, 0.3 cubic centimeters, or 0.2 cubic centimeters. The opening area of ​​the first through hole 109 can be 1.5 square millimeters to 8 square millimeters. For example, the opening area of ​​the first through hole 109 can be 1.5 square millimeters, 1.8 square millimeters, 2 square millimeters, 3 square millimeters, 4 square millimeters, or 4.5 square millimeters.

[0087] It should be noted that, in some other possible implementations, the first through hole 109 may include a plurality of sub-through holes, and the sub-through holes pass through the first side surface and the second side surface.

[0088] 5 and 6 , FIG5 is a cross-sectional view along line EE in FIG3 , and FIG6 is a partially enlarged schematic diagram of point G in FIG5 . A first cavity 110 is defined between the device housing 102 and the display screen 101 by a sealing structure 104 .

[0089] As shown in Figures 7 and 8, Figure 7 is a cross-sectional view along line FF in Figure 3, and Figure 8 is a partially enlarged schematic diagram of point H in Figure 7; in some embodiments, the third cavity 113 is connected to the sound outlet 103, and in order to ensure the sealing performance of the connection between the third cavity 113 and the sound outlet 103, the outlet of the third cavity 113 and the sound outlet 103 are sealed and connected by a sealing ring 126, and the sealing ring 126 can be foam or silicone, etc.

[0090] Referring to FIG. 9 , FIG. 9 is a schematic diagram of the structure of the electronic device without the display screen 101 installed in an embodiment of the present application. In some embodiments, the sealing structure 104 includes a plurality of sealing strips 116, which are connected end to end to form a closed pattern. The first through hole 109 is located inside the closed pattern. By forming a closed pattern, the first cavity 110 can form a relatively closed space. The first through hole 109 is located inside the closed pattern, so that the first cavity 110 can communicate with the second cavity 112. The closed pattern formed by the plurality of sealing strips 116 can be circular, elliptical, or polygonal. The polygon can be a quadrilateral, pentagon, or hexagon, etc.

[0091] As shown in FIG9 , in one embodiment, multiple sealing strips 116 can form an integral structure, making the sealing structure 104 a single, integrated structure. This facilitates manufacturing and ensures sealing performance. The closed shape is a quadrilateral, such as a rectangle. The opening of the first through hole 109 is located within the closed shape, thereby achieving communication between the first cavity 110 and the first through hole 109. The sealing strips 116 are located on the same plane on the first side surface 107, thereby effectively sealing the display screen 101 and the sealing strips 116, as well as the sealing strips 116 and the first side surface 107.

[0092] It should be noted that in some other possible embodiments, the multiple sealing strips 116 may be separate and bonded to each other. In still other possible embodiments, the sealing structure 104 may be in the form of a bag, the bag opening of which is connected to the first through hole 109; or the first cavity 110 may be enclosed by the sealing strips 116, the membrane structure, and the second surface, and the membrane structure and the sealing strips 116 may be sealed by bonding, so that the membrane structure can be in contact with the display screen 101.

[0093] Referring to FIG10 , FIG10 is a schematic diagram of a partial structure of another electronic device when the display screen 101 is not installed in an embodiment of the present application; in other embodiments, the closed figure is a polygon, which may be a decagon; the first cavity 110 includes a first sub-cavity 117, a second sub-cavity 118, and a third sub-cavity 119; the width of the first sub-cavity 117 is greater than the width of the second sub-cavity 118, the width of the second sub-cavity 118 is greater than the width of the third sub-cavity 119, and the width directions of the three sub-cavities are parallel to the width direction of the electronic device; the length of the first sub-cavity 117 is greater than the length of the third sub-cavity 119, the length of the second sub-cavity 118 is greater than the length of the third sub-cavity 119, and the relationship between the length of the first sub-cavity 117 and the length of the second sub-cavity 118 can be set as needed; and the opening of the first through hole 109 is located at the third sub-cavity 119. Through this arrangement, the first cavity 110 is roughly convex in shape, which can have better acoustic performance and make full use of the space between the display screen 101 and the device housing 102, and the position of the sealing strip 116 of the display screen 101 on the first side 107 avoids the flexible circuit board that avoids the display screen 101.

[0094] In some embodiments, one side of the sealing strip 116 is bonded to the first side 107, and the other side of the sealing strip 116 opposite to the display screen 101; or, one side of the sealing strip 116 is bonded to the first side 107, and the other side of the sealing strip 116 opposite to the display screen 101; or, one side of the sealing strip 116 is bonded to the first side 107, and the other side of the sealing strip 116 opposite to the display screen 101; or, one side of the sealing strip 116 is bonded to the first side 107, and the other side of the sealing strip 116 opposite to the display screen 101. In this way, only one of the two opposite side surfaces of the sealing strip 116 is bonded to the corresponding component, the display screen 101 or the first side surface 107, or both opposite side surfaces of the sealing strip 116 are in contact with the corresponding components, which facilitates maintenance and assembly. When the sealing strip 116 is bonded to the first side surface 107 and the sealing strip 116 is in contact with the display screen 101, when the display screen 101 and the device housing 102 are assembled, since the sealing strip 116 is not bonded to the display screen 101, the assembly accuracy between the display screen 101 and the device housing 102 can be better controlled. In addition, when the display screen 101 is damaged, it is also convenient to disassemble and replace the display screen 101 without damaging the original sealing strip 116. Therefore, after replacing the new display screen 101, the sealing performance of the first cavity 110 can also be guaranteed. Similarly, when the sealing strip 116 abuts the first side surface 107 and is bonded to the display screen 101, the installation accuracy of the display screen 101 can be controlled. Furthermore, when the display screen 101 is replaced, the sealing strip 116 can be pre-attached to the underside of the display screen 101. When the sealing strip 116 abuts the display screen 101 and the device housing 102, it is easier to replace the sealing strip 116. Bonding both opposing sides of the sealing strip 116 can better ensure the sealing performance of the first cavity 110.

[0095] It should be noted that the thickness of the sealing strip 116 in the thickness direction of the electronic device and the area of ​​the sealing strip 116 in a plane parallel to the length and width directions of the electronic device can be determined according to actual needs.

[0096] In some embodiments, the sealing structure 104 is made of an elastic material. This allows the sealing structure 104 to have a certain degree of compression, thereby ensuring the seal between the display screen 101 and the device housing 102, and thus ensuring the sealing of the first cavity 110. Exemplarily, the elastic material is foam or silicone. Foam or silicone has good elasticity and is relatively low in cost. When foam is used for the sealing structure 104, the thickness of the foam can be compressed in the thickness direction of the electronic device to ensure sealing performance, thereby improving the performance of the rear cavity.

[0097] Referring to Figure 11, Figure 11 is a schematic diagram of the partial structure of the electronic device when the display screen 101 and the sealing structure 104 are not installed in an embodiment of the present application. The first side 107 has a closed positioning groove 120. The closed shape formed by the positioning groove 120 is the same as the closed shape formed by the sealing structure 104. At least part of the sealing strip 116 is located in the positioning groove 120. In this way, the positioning groove 120 can facilitate the positioning of the sealing strip 116 during installation, and to a certain extent can reduce the possibility of the sealing strip 116 moving during use.

[0098] In some embodiments, the positioning groove 120 is formed by a laser engraving process, which facilitates the grooving of the device housing 102 .

[0099] It should be noted that the depth of the positioning groove 120 can be between 0.02 mm and 1.5 mm, for example, 0.1 mm, 0.2 mm, 0.5 mm, or 1 mm, etc., and this embodiment of the present application does not impose any specific limitations on this. In some other possible embodiments, the positioning groove 120 can also be formed using processes such as stamping or die-casting. In addition, the first side surface 107 can also be formed into a shape identical to the closed pattern formed by the sealing structure 104 using methods such as spray painting to facilitate assembly of the sealing structure 104.

[0100] Referring to FIG. 12 , FIG. 12 is a schematic diagram illustrating the structure of an electronic device without a rear cover 106 in accordance with an embodiment of the present application. A mounting hole 121 is defined in the housing 115 of the speaker 105. Screws (not shown) are inserted through the mounting hole 121 to mount the speaker 105 on the device housing 102. The speaker 105 is located near the bottom of the electronic device.

[0101] It should be noted that FIG. 12 is only for illustrating the installation position of the speaker 105 on the device housing 102 , and does not limit the specific form of the structure at other positions on the device housing 102 .

[0102] As shown in Figures 13 and 14, Figure 13 is a structural schematic diagram of the electronic device when the back cover 106 and the speaker 105 are not installed in an embodiment of the present application, and Figure 14 is a structural schematic diagram from another perspective of Figure 13; the second side 108 of the device housing 102 has a recessed groove 122, and the first through hole 109 is located at the bottom of the recessed groove 122 to penetrate the first side 107 and the second side 108.

[0103] It should be noted that, FIG13 and FIG14 do not show the fixing holes corresponding to the mounting holes 121 on the speaker 105 , and the speaker 105 is fixed to the device housing 102 using screws through the mounting holes 121 and fixing.

[0104] As shown in Figures 14 and 15 , Figure 15 is a schematic structural diagram of the speaker 105 in an embodiment of the present application, wherein the second cavity 112 is open. The housing 115 includes a frame 123, the height of which extends along the thickness direction of the electronic device. The frame 123 surrounds the edge of the recessed groove 122. The rear cavity of the speaker 105 may also include a recessed groove 122. By providing the recessed groove 122 on the second side surface 108, the recessed groove 122 can be utilized to further expand the rear cavity of the speaker 105 when the speaker 105 is mounted on the device housing 102. The outer shell 115 is sealed to the groove edge of the recessed groove 122. By sealing the outer shell 115 to the groove edge of the recessed groove 122, the sealing of the third cavity 113 at the connection between the outer shell 115 and the recessed groove 122 can be ensured. For example, the frame 123 of the outer shell 115 is sealed to the second side 108 by a sealing ring 126. The sealing ring 126 is arranged along the notch edge of the recessed groove 122. The material of the sealing ring 126 can be foam or silicone. The frame 123 is fixedly connected to the cover plate 114. The frame 123 of the outer shell 115, the core 125 and the cover plate 114 enclose the third cavity 113 (see Figure 4).

[0105] It should be noted that in some other possible embodiments, at least part of the frame 123 extends into the recessed groove 122. This helps reduce the impact of the thickness of the speaker 105 on the thickness of the electronic device when the speaker 105 is installed on the device housing 102, thereby facilitating a lightweight and thin design for the electronic device.

[0106] As shown in Figures 15 and 16, Figure 16 is a structural schematic diagram of the frame 123 of the outer shell 115 of the speaker 105 in an embodiment of the present application being connected with the cover 114; the outer shell 115 has a positioning platform 124, and the positioning platform 124 is located in the inner cavity 111. The positioning platform 124 is used to install the core 125 in the inner cavity 111; the core 125 can be installed in the inner cavity 111 by bonding or screwing.

[0107] Referring to Figure 17, Figure 17 is a schematic diagram comparing the frequency response curve of the speaker before the rear cavity is expanded and the frequency response curve of the speaker after the rear cavity is expanded, wherein the horizontal axis represents the frequency and the vertical axis represents the sound pressure level. In an application scenario, the first curve L1 represents the frequency response curve of the speaker whose rear cavity is not expanded in the related technology, and the second curve L2 represents the frequency response curve of the speaker 105 after the rear cavity is expanded in the embodiment of the present application. It can be seen from Figure 17 that the low frequency of the speaker 105 in the embodiment of the present application can be significantly improved. In addition, the actual improvement effect is related to the size of the first cavity 110. When the volume of the first cavity 110 is larger, the volume of the rear cavity of the expanded speaker 105 is larger, and the improvement effect of the speaker 105 is more obvious.

[0108] In the description of the specification of this application, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, characterized in that: include: A device housing, wherein the device housing has a first side surface and a second side surface opposite to each other, and the device housing has a first through hole penetrating the first side surface and the second side surface; a display screen, the display screen being located on the side where the first side surface is located; A sealing structure, wherein the sealing structure is located between the device housing and the display screen, the display screen, the sealing structure and the device housing form a first cavity, and the first cavity is connected to the first through hole; A speaker is located on the side where the second side is located, and the speaker includes a shell, the shell has an inner cavity, the inner cavity includes a second cavity and a third cavity, and the second cavity is connected to the first through hole.

2. The electronic device according to claim 1, wherein: The speaker further includes a core installed in the inner cavity to separate the inner cavity into the second cavity and the third cavity.

3. The electronic device according to claim 2, characterized in that: The core, the shell and the device casing form the second cavity.

4. The electronic device according to claim 2, characterized in that: The speaker further comprises a cover plate, wherein the cover plate is fixedly connected to the outer shell, and the outer shell, the inner core and the cover plate enclose the third cavity.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The sealing structure comprises a plurality of sealing strips, wherein the plurality of sealing strips are connected end to end to form a closed pattern; The first through hole is located inside the closed figure.

6. The electronic device according to claim 5, characterized in that: One side of the sealing strip is bonded to the first side, and the other side of the sealing strip opposite to the first side is in contact with the display screen; Or, one side of the sealing strip is in contact with the first side, and the other side of the sealing strip opposite to the first side is bonded to the display screen; Or, one side of the sealing strip is bonded to the first side, and the other side of the sealing strip opposite to the first side is bonded to the display screen; Alternatively, one side surface of the sealing strip abuts against the first side surface, and the other side surface of the sealing strip opposite to the first side surface abuts against the display screen.

7. The electronic device according to claim 5, characterized in that: The first side surface has a closed positioning groove, and at least a portion of the sealing strip is located in the positioning groove.

8. The electronic device according to claim 7, characterized in that: The positioning groove is formed by laser engraving technology.

9. The electronic device according to any one of claims 1 to 4, characterized in that: The sealing structure is made of elastic material.

10. The electronic device according to claim 9, characterized in that: The elastic material is foam or silica gel.

11. The electronic device according to any one of claims 1 to 4, characterized in that: The second side surface has a concave groove, and the first through hole is located at the bottom of the concave groove to penetrate the first side surface and the second side surface; The housing comprises a frame, the height of which extends along the thickness direction of the electronic device; The frame is arranged around the groove edge of the concave groove.

12. The electronic device according to claim 11, characterized in that: The housing is sealed and connected to the groove edge of the recessed groove.

13. The electronic device according to any one of claims 1 to 4, characterized in that: The first cavity and the second cavity are directly connected to the first through hole respectively.

14. The electronic device according to any one of claims 1 to 4, characterized in that: The rear cavity of the speaker includes the first cavity and the second cavity; the front cavity of the speaker is the third cavity.

15. The electronic device according to any one of claims 1 to 4, characterized in that: When the first cavity is greater than or equal to 0.1 cubic centimeter, the orifice area of ​​the first through hole is not less than 1.8 square millimeters; when the first cavity is less than 0.1 cubic centimeter, the orifice area of ​​the first through hole is not less than 1.5 square millimeters.

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