Electronic device

Abstract

The invention discloses electronic equipment, and belongs to the technical field of loudspeakers. The electronic equipment comprises an equipment shell, a display screen, a sealing structure and a loudspeaker, the equipment shell is provided with a first side face and a second side face which are opposite, and a first through hole penetrating through the first side face and the second side face is formed in the equipment shell; the display screen is located on the side where the first side face is located. The sealing structure is located between the equipment shell and the display screen, a first cavity is defined by the display screen, the sealing structure and the equipment shell, and the first cavity is communicated with the first through hole; the loudspeaker is located on the side where the second side face is located, the loudspeaker comprises a shell, the shell is provided with an inner cavity, the inner cavity comprises a second cavity body and a third cavity body, and the second cavity body is communicated with the first through hole. The loudspeaker has relatively high cost performance, can have high sound quality performance, and has a relatively obvious sound quality improvement effect.

Description

Technical Field

[0001] The present application relates to the technical field of loudspeakers, and in particular to an electronic device. Background Art

[0002] For electronic devices with sound-generating functions, such as mobile phones, laptops, tablets, and smart phones, speakers are generally used to generate sound to meet the needs of users. However, with the trend of electronic devices becoming thinner and lighter, the thinning of components inside electronic devices has gradually become a development direction. The speaker is a factor that affects the thinning of the entire device. When the speaker is thinned, the volume of the speaker is also reduced accordingly; the reduction in the volume of the speaker also affects the sound quality of the speaker. The sound quality of the speaker is related to the size of the back cavity of the speaker. When the volume of the back cavity of the speaker is insufficient, the low-frequency performance is poor and the power consumption increases. In order to alleviate this problem, although bass powder can be used to virtually expand the back cavity, or a higher-configuration power amplifier can be used to improve the low-frequency sound quality by boosting the electrical signal; however, the cost of bass powder is high, and the power amplifier is limited by its own performance and its improvement effect is limited. Summary of the invention

[0003] The present application provides an electronic device to solve the technical problems that the cost of using bass powder is high and the power amplifier has limited improvement effect due to its own performance limitation.

[0004] The technical solution is as follows:

[0005] A first aspect of the present application provides an electronic device, comprising: a device housing, a display screen, a sealing structure and a speaker;

[0006] 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;

[0007] The display screen is located on the side where the first side is located;

[0008] 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;

[0009] The speaker is located on the side where the second side 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.

[0010] 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; and after the 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 structure is used to ensure the sealing performance of the first cavity, so that the volume of the sound cavity of the speaker can be increased; this method can be used to expand the back cavity of the speaker, and compared with the use of the more expensive Bass powder in the related art, the method of expanding the back cavity in this application has a higher cost performance; compared with the power amplifier in the related art, since the sealing structure can be used to mark out the first cavity of the required volume as needed, the volume of the back cavity can be expanded as needed, which can enable the speaker to have a high-quality sound performance, and the sound quality improvement effect is more obvious.

[0011] 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.

[0012] By adopting the above scheme, the inner core serves as the sound-emitting component of the speaker, and the speaker can produce sound through the vibration of the inner core, and the inner cavity is divided into two different cavities by the inner 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.

[0013] In some implementations, the core, the shell, and the device housing enclose the second cavity.

[0014] 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 sealing the second cavity, which is conducive to reducing the thickness of the speaker and reducing the weight of the speaker. 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 of the electronic device.

[0015] In some implementations, the speaker further includes 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.

[0016] By adopting the above solution, the cover plate can cover the third cavity of the speaker.

[0017] In some implementations, the sealing structure includes a plurality of sealing strips, and the plurality of sealing strips are connected end to end to form a closed figure;

[0018] The first through hole is located inside the closed figure.

[0019] 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.

[0020] In some implementations, 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 abutted against the display screen;

[0021] 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;

[0022] 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;

[0023] 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.

[0024] By adopting the above scheme, only one of the two opposite sides of the sealing strip is bonded to the corresponding component, the display screen or the first side, or both opposite sides of the sealing strip are abutted against the corresponding components, which is convenient for maintenance and assembly; when the sealing strip is bonded to the first side and the sealing strip is abutted against the display screen, when the display screen and the device housing are assembled, since the sealing strip is not bonded to the display screen, the assembly accuracy between the display screen and the device housing can be better controlled; in addition, when the display screen is damaged, it is also convenient to disassemble and replace the display screen without damaging the original sealing strip, so after replacing the new display screen, the sealing performance of the first cavity can also be guaranteed. Similarly, when the sealing strip is abutted against the first side and the sealing strip is bonded to the display screen, the installation accuracy of the display screen can also be controlled; in addition, when the display screen is replaced, the sealing strip can be pasted under the display screen in advance. When the sealing strip is abutted against the display screen and the device housing respectively, it is convenient to replace the sealing strip. The form in which both opposite sides of the sealing strip are bonded can better ensure the sealing performance of the first cavity.

[0025] 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.

[0026] By adopting the above solution, the positioning groove can facilitate the positioning of the sealing strip during installation and can reduce the possibility of movement of the sealing strip during use to a certain extent.

[0027] In some implementations, the positioning groove is formed by a laser engraving process.

[0028] By adopting the above solution, it is convenient to groove the device housing.

[0029] In some implementations, the sealing structure is made of an elastic material.

[0030] 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.

[0031] In some implementations, the elastic material is foam or silicone.

[0032] By adopting the above solution, the foam or silicone cavity has good elasticity and the cost is relatively low.

[0033] 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;

[0034] The housing comprises a frame, the height of which extends along the thickness direction of the electronic device;

[0035] The frame is arranged around the groove edge of the concave groove.

[0036] By adopting the above solution, a recessed groove is provided on the second side surface, and when the speaker is installed on the device housing, the recessed groove is used to expand the rear cavity of the speaker.

[0037] In some implementations, the housing is sealed to an edge of the recessed groove.

[0038] 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.

[0039] In some implementations, the first cavity and the second cavity are directly connected to the first through hole, respectively.

[0040] By adopting the above scheme, direct communication between the first cavity and the second cavity can be achieved through direct communication, 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 facilitates the thinness of the electronic device.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] By adopting the above solution, the opening area of ​​the first through hole is limited to be adapted 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

[0045] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0046] Figure 2 A schematic diagram of the exploded structure of an electronic device provided in an embodiment of the present application;

[0047] Figure 3 for Figure 1 A top view of an electronic device in FIG.

[0048] Figure 4 is along Figure 3 Sectional view along the mid-DD line;

[0049] Figure 5 is along Figure 3 Sectional view along line EE;

[0050] Figure 6 yes Figure 5 A local enlarged schematic diagram of G in FIG.

[0051] Figure 7 is along Figure 3 Sectional view along line FF;

[0052] Figure 8 yes Figure 7 A local enlarged schematic diagram of H in FIG.

[0053] Fig. 9 This is a schematic diagram of the structure of an electronic device when a display screen is not installed in an embodiment of the present application;

[0054] Fig.10 It is a partial structural diagram of another electronic device when a display screen is not installed in the embodiment of the present application;

[0055] Fig.11 It is a schematic diagram of a partial structure of an electronic device when a display screen and a sealing structure are not installed in an embodiment of the present application;

[0056] Fig.12 This is a schematic diagram of the structure of an electronic device without a back cover installed in an embodiment of the present application;

[0057] Fig.13 This is a schematic diagram of the structure of the electronic device when the back cover and the speaker are not installed in the embodiment of the present application;

[0058] Fig.14 for Fig.13 A structural schematic diagram from another perspective;

[0059] Fig.15 This is a schematic diagram of the structure of the loudspeaker after the second cavity is open in the embodiment of the present application;

[0060] Fig.16 This is a schematic diagram of the structure in which the housing and the cover of the speaker are connected together in an embodiment of the present application;

[0061] Fig.17 It is a schematic diagram comparing the frequency response curve of the speaker before the rear cavity expansion and the frequency response curve of the speaker after the rear cavity expansion.

[0062] The meanings of the figures are as follows:

[0063] 101. display screen; 102. device housing; 103. sound outlet hole; 104. sealing structure; 105. speaker; 106. back cover; 107. first side surface; 108. second side surface; 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. inner core; 126. sealing ring. DETAILED DESCRIPTION

[0064] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0065] 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 only 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, the words "first" and "second" are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not limit them to be different.

[0066] The electronic device provided in the embodiments of the present application is explained in detail below.

[0067] See also Figure 1 As shown, Figure 1 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 smart watch, or other electronic device. The mobile phone may be a straight phone or a foldable phone. The embodiment of the present application does not impose any special restrictions on the specific form of the above-mentioned electronic device. For example, for the convenience of description and understanding, the electronic device is taken as an example of a mobile phone.

[0068] For ease of description, the length direction of the electronic device is defined as the AA direction, the width direction of the electronic device is defined as the BB direction, and the thickness direction of the electronic device is defined as the CC direction. The AA direction, the BB direction, and the CC direction are perpendicular to each other.

[0069] See also Figure 1 As shown, 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.

[0070] like Figure 1 As shown, a sound outlet hole 103 is opened on the side of the device housing 102, and the number of the sound outlet holes 103 is multiple, and the multiple sound outlet holes 103 are distributed at intervals; the sound outlet holes 103 can be located at the bottom of the electronic device; the direction from the top of the electronic device to the bottom of the electronic device is the length direction of the electronic device.

[0071] See also Figure 2 As shown, Figure 2Schematic diagram of the exploded structure of the electronic device provided in the embodiment of the present application; in some embodiments, the electronic device further comprises 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 respectively located on opposite sides of the device housing 102, and the speaker 105 and the back cover 106 are arranged on the same side relative to 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. A first through hole 109 is also opened on the device housing 102, and the first through hole 109 is located within the shape surrounded by the sealing structure 104. The display screen 101 is bonded to the first side 107.

[0072] It should be noted that the back cover 106 and the device housing 102 may be a split structure and fixedly connected, or the two may be an integrated structure.

[0073] Combination Figure 3 and Figure 4 As shown, Figure 3 for Figure 1 A top view of an electronic device in FIG. Figure 4 is along Figure 3 Cross-sectional view along line DD; In some embodiments, the device housing 102 further has a second side surface 108 opposite to the first side surface 107, and the first through hole 109 penetrates the first side surface 107 and the second side surface 108. Since the first through hole 109 penetrates 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, so that the space formed between the display screen 101 and the device housing 102 can be connected to 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 housing 115 . The housing 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 in communication with the first through hole 109 .

[0074] 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 the first through hole 109 is set on the device housing 102, the second cavity 112 and the first cavity 110 of the speaker 105 are connected by the first through hole 109, and the 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, and the sealing structure 104 is used to ensure the sealing performance of the first cavity 110, so that the volume of the sound cavity of the speaker 105 can be increased.

[0075] This method can be used to expand the back cavity of the speaker 105, and compared with the high-priced bass powder used in the related art, the method of expanding the back cavity in this application has a higher cost-effectiveness and more obvious cost savings; compared with the power amplifier in the related art, since the sealing structure 104 can be used to divide the first cavity 110 of the required volume as needed, the volume of the back cavity can be expanded as needed, which can make the speaker 105 have a high 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 by the sealing structure 104, the first cavity 110 can have better integrity, and can have a thinner shape in the electronic device, and can also achieve physical expansion of the back cavity, so as to ensure that the back cavity meets the maximum output requirements of the speaker 105 performance, ensure the sound quality performance of the speaker 105, and improve the overall acoustic performance of the speaker 105.

[0076] In one application scenario, compared with the speaker 105 whose rear cavity is not expanded, the electronic device that expands the rear cavity of the speaker 105 according to the embodiment of the present application increases the volume of the rear cavity by at least 0.1 cubic centimeters.

[0077] It should be noted that, in some other possible cases, in order to further increase the volume of the rear cavity and without considering the cost, bass powder can also be filled in the first cavity 110. Bass powder can improve the sound performance of the speaker 105, which mainly enhances the bass frequency band through the superposition of sound wave reflection, and at the same time achieves the effect of virtual expansion and volume increase.

[0078] In some embodiments, the display screen 101 may include a cover plate 114 layer and a display layer, a gap space is formed between the display layer of the display screen 101 and the first side 107, and the sealing structure 104 is located between the display layer and the first side 107, so that 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, and the metal structure may be, for example, copper foil or steel sheet.

[0079] In some embodiments, the shape of the first through hole 109 may be circular, polygonal or elliptical, and the polygonal shape may be a quadrilateral, pentagonal or hexagonal, etc. The shape of the first through hole 109 may be determined according to actual needs.

[0080] See also Figure 4 As shown, 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 is used as a sound-generating component of the speaker 105. The speaker 105 can generate sound through the vibration of the core 125, and the inner cavity 111 is divided into two different cavities through 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 expanding the sound, and the rear cavity has the effect of enhancing the intensity of the sound.

[0081] See also Figure 4 As shown, 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 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; using an open second cavity 112, the components sealing the second cavity 112 are correspondingly reduced, which is conducive to reducing the thickness of the speaker 105 and reducing the 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 conducive to reducing the lightness of the electronic device.

[0082] See also Figure 4As shown, in some embodiments, the speaker 105 further includes a cover plate 114, the cover plate 114 is fixedly connected to the housing 115, and the housing 115, the core 125 and the cover plate 114 enclose a third cavity 113. The cover plate 114 can cover the third cavity 113 of the speaker 105. In one embodiment, the cover plate 114 and the housing 115 are an integral structure. The speaker 105 can have a certain length, width and thickness, and 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; the width direction of the speaker 105 is parallel to the length direction of the electronic device.

[0083] It should be noted that, in some other possible implementations, the cover plate 114 and the housing 115 can also be a split structure, and the cover plate 114 and the housing 115 are fixedly connected by screws or bonding. In addition, in some other possible implementations, the cover plate 114 can be omitted, that is, the speaker 105 has the third cavity 113 as an open type, which can reduce the thickness of the speaker 105; the third cavity 113 is also in an open form, 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 the sealing of the third cavity 113 at the connection between the back cover 106 and the housing 115.

[0084] See also Figure 4As shown, the first cavity 110 and the second cavity 112 are directly connected to the first through hole 109 respectively; through the direct connection, the direct connection between the first cavity 110 and the second cavity 112 can be achieved, reducing the length of the connecting path between the two, and such a design also simplifies the assembly method of the speaker 105 in the electronic device, and is conducive to the lightweight of the electronic device. The area of ​​the opening of the first through hole 109 will affect the frequency response performance of the speaker 105 after the rear cavity is expanded. When the area of ​​the opening of the first through hole 109 is too small, the Q value (Q value is the quality factor) of the speaker will increase, and the intermediate frequency will be deteriorated. On the frequency response curve of the speaker, it is shown that the curve will have a pit at the intermediate frequency, which affects the sound performance. Therefore, it is necessary to limit the opening area of ​​the first through hole 109; 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 not 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 not 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, when the volume of the first cavity 110 is larger, the opening area of ​​the first through hole 109 needs to be larger. The volume of the first cavity 110 may be 0.1 cm3 to 0.6 cm3; for example, the volume of the first cavity 110 may be 0.6 cm3, 0.5 cm3, 0.4 cm3, 0.3 cm3 or 0.2 cm3. The opening area of ​​the first through hole 109 may be 1.5 mm2 to 8 mm2, for example, the opening area of ​​the first through hole 109 may be 1.5 mm2, 1.8 mm2, 2 mm2, 3 mm2, 4 mm2 or 4.5 mm2.

[0085] 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 penetrate the first side surface and the second side surface.

[0086] Combination Figure 5 and Figure 6 As shown, Figure 5 is along Figure 3 The cross-sectional view of the EE line, Figure 6 yes Figure 5 In the partially enlarged schematic diagram at G in FIG. 1 , a first cavity 110 is defined between the device housing 102 and the display screen 101 by a sealing structure 104 .

[0087] Combination Figure 7 and Figure 8 As shown, Figure 7 is along Figure 3 The cross-sectional view of the FF line, Figure 8 yes Figure 7A local enlarged schematic diagram of H in the figure; 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.

[0088] See also Fig. 9 As shown, Fig. 9 1 is a schematic diagram of the structure of the electronic device when the display screen 101 is not installed in the embodiment of the present application; in some embodiments, the sealing structure 104 includes a plurality of sealing strips 116, and the plurality of sealing strips 116 are connected end to end to form a closed figure; the first through hole 109 is located inside the closed figure, and the closed figure is formed so that the first cavity 110 can form a relatively closed space; and the first through hole 109 is located inside the closed figure, so that the first cavity 110 can communicate with the second cavity 112. The closed figure surrounded by the plurality of sealing strips 116 can be circular, elliptical or polygonal, and the polygon can be a quadrilateral, pentagon or hexagon, etc.

[0089] See also Fig. 9 As shown, in one embodiment, a plurality of sealing strips 116 can form an integral structure, so that the sealing structure 104 is an integral structure, which is convenient to manufacture and can ensure the sealing performance. The closed figure is a quadrilateral, for example, the quadrilateral is a rectangle; the opening of the first through hole 109 is located inside the closed figure, so that the first cavity 110 is connected to the first through hole 109. The sealing strip 116 is located on the same plane on the first side surface 107, so that the sealing between the display screen 101 and the sealing strip 116 and the sealing between the sealing strip 116 and the first side surface 107 can be better achieved.

[0090] It should be noted that, in some other possible implementations, the multiple sealing strips 116 may be in a separate form, and the multiple sealing strips 116 may be bonded to each other. In some other possible implementations, 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 is surrounded by the sealing strip 116, the membrane structure and the second surface, the membrane structure and the sealing strip 116 may be sealed and connected by bonding, and the membrane structure may be attached to the display screen 101.

[0091] See also Fig.10 As shown, Fig.10It is a partial structural diagram of another electronic device when the display screen 101 is not installed in the embodiment of the present application; in other embodiments, the closed figure is a polygon, and the polygon can 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 that 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 of the display screen 101.

[0092] In some embodiments, one side of the sealing strip 116 is bonded to the first side 107, and the other side opposite to the sealing strip 116 is abutted against the display screen 101; or, one side of the sealing strip 116 is abutted against the first side 107, and the other side opposite to the sealing strip 116 is bonded to the display screen 101; or, one side of the sealing strip 116 is bonded to the first side 107, and the other side opposite to the sealing strip 116 is bonded to the display screen 101; or, one side of the sealing strip 116 is abutted against the first side 107, and the other side opposite to the sealing strip 116 is abutted against 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 the two opposite side surfaces of the sealing strip 116 are both 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 is assembled with the device housing 102, 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 against the first side surface 107 and the sealing strip 116 is bonded to the display screen 101, the installation accuracy of the display screen 101 can also be controlled; in addition, when the display screen 101 is replaced, the sealing strip 116 can be pre-pasted under the display screen 101. When the sealing strip 116 abuts against the display screen 101 and the device housing 102, it is convenient to replace the sealing strip 116. The bonding of the two opposite sides of the sealing strip 116 can better ensure the sealing performance of the first cavity 110.

[0093] 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 formed parallel to the length direction and width direction of the electronic device can be determined according to actual needs.

[0094] In some embodiments, the sealing structure 104 is made of an elastic material. This allows the sealing structure 104 to have a certain amount of compression, thereby ensuring the sealing performance between the display screen 101 and the device housing 102, thereby ensuring the sealing performance of the first cavity 110. Exemplarily, the elastic material is foam or silicone. Foam or silicone cavity has good elasticity and is relatively low in cost. When the sealing structure 104 is made of foam, the thickness of the foam can be compressed in the thickness direction of the electronic device to ensure the sealing performance, thereby improving the performance of the rear cavity.

[0095] See also Fig.11 As shown, Fig.11 This 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 the embodiment of the present application. The first side 107 has a closed positioning groove 120. The closed shape surrounded by the positioning groove 120 is the same as the closed shape surrounded 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 reduce the possibility of movement of the sealing strip 116 during use to a certain extent.

[0096] In some embodiments, the positioning groove 120 is formed by laser engraving, which makes it easier to groove the device housing 102 .

[0097] 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 will not be specifically limited to this. In some other possible implementations, the positioning groove 120 can also be formed by a process such as stamping or die casting. In addition, the first side surface 107 can also be formed into a shape that is the same as the closed figure surrounded by the sealing structure 104 by spraying paint or the like, so as to facilitate the assembly of the sealing structure 104.

[0098] See also Fig.12 As shown, Fig.12 The structure diagram of the electronic device without the back cover 106 in the embodiment of the present application; the housing 115 of the speaker 105 is provided with a mounting hole 121, and the speaker 105 is mounted on the device housing 102 by passing a screw (not shown) through the mounting hole 121. The speaker 105 is close to the bottom of the electronic device.

[0099] It should be noted that for 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.

[0100] Combination Fig.13 and Fig.14 As shown, Fig.13 1 is a schematic diagram of the structure of the electronic device when the back cover 106 and the speaker 105 are not installed in the embodiment of the present application. Fig.14 for Fig.13 The second side surface 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 surface 107 and the second side surface 108.

[0101] It should be noted that Fig.13 and Fig.14The fixing holes corresponding to the mounting holes 121 on the speaker 105 are not shown in the figure. The speaker 105 is fixed to the device housing 102 by screws through the mounting holes 121 and the fixing holes.

[0102] Combination Fig.14 and Fig.15 As shown, Fig.15 This is a schematic diagram of the structure of the speaker 105 after the second cavity 112 is open in the embodiment of the present application; the housing 115 includes a frame 123, the height of the frame 123 extends along the thickness direction of the electronic device; the frame 123 is arranged around the edge of the recessed groove 122; the rear cavity of the speaker 105 may also include the recessed groove 122. In this way, the recessed groove 122 is provided on the second side surface 108, and when the speaker 105 is installed on the device housing 102, the recessed groove 122 can be used to further expand the rear cavity of the speaker 105. 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, which 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 surround the third cavity 113 (see Figure 4 shown).

[0103] It should be noted that in some other possible implementations, at least a portion of the frame 123 extends into the recessed groove 122. This helps reduce the effect 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 design for the electronic device.

[0104] Combination Fig.15 and Fig.16 As shown, Fig.16 Schematic diagram of the structure in which the frame 123 and the cover 114 of the outer shell 115 of the speaker 105 are connected together in the embodiment of the present application; a positioning platform 124 is provided on the outer shell 115, 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.

[0105] See also Fig.17 As shown, Fig.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 without rear cavity expansion in the related art, 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. Fig.17 It can be seen 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 back cavity of the expanded speaker 105 is larger, and the improvement effect of the speaker 105 is more obvious.

[0106] In the description of the specification of the present application, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0107] 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 it. 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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