Electronic device

Abstract

The application discloses an electronic device, and belongs to the technical field of loudspeakers. The electronic device comprises a device shell, a display screen, a sealing structure and a loudspeaker. The device shell has opposite first and second side surfaces, and the device shell is provided with a first through hole penetrating through the first and second side surfaces. The display screen is located on the side where the first side surface 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 enclose a first cavity, and the first cavity is in communication with the first through hole. The loudspeaker is located on the side where the second side surface is located, and the loudspeaker comprises a shell. The shell has an inner cavity, and the inner cavity comprises a second cavity and a third cavity. The second cavity is in communication with the first through hole. The application has a high cost performance, can make the loudspeaker have a high sound quality performance, and the sound quality improvement effect is relatively obvious.

Description

TECHNICAL FIELD

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

[0002] For electronic devices with sound production functions, such as mobile phones, notebook computers, tablet computers, smart phones, etc., generally have loudspeakers, which produce sound through loudspeakers to meet the needs of users, however, under the development trend of thin and light electronic devices, the thinning of the components inside the electronic devices has gradually become the development direction. The loudspeaker is one of the factors affecting the thinning of the whole machine, when the loudspeaker is thinned, the volume of the loudspeaker is also correspondingly reduced; the reduction of the volume of the loudspeaker also affects the sound quality performance of the loudspeaker. The sound quality performance of the loudspeaker is related to the size of the back cavity of the loudspeaker, when the volume of the back cavity of the loudspeaker 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 power amplifier with higher configuration can be used to improve the low frequency sound quality; but the cost of Bass powder is high, and the power amplifier is limited by its own performance, so its improvement effect is limited. SUMMARY

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

[0004] The technical solution is as follows:

[0005] The first aspect of the present application provides an electronic device, comprising: a device shell, a display screen, a sealing structure and a loudspeaker;

[0006] The device shell has opposite first and second sides, and the device shell has a first through hole penetrating through the first and second sides;

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

[0008] The sealing structure is located between the device shell and the display screen, the display screen, the sealing structure and the device shell form a first cavity, and the first cavity is in communication with the first through hole;

[0009] The loudspeaker is located on the side where the second side is located, and the loudspeaker comprises a shell, the shell has an inner cavity, the inner cavity comprises a second cavity and a third cavity, and the second cavity is in communication with 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 loudspeaker, for example, the volume of the rear cavity of the loudspeaker can be expanded. After the first through hole is arranged on the device shell, the second cavity of the loudspeaker is connected with the first cavity through the first through hole, and a sealing structure is adopted to divide the gap space between the display screen and the device shell into a cavity with a required volume, and the sealing performance of the first cavity is ensured through the sealing structure, so that the volume of the sound cavity of the loudspeaker can be increased. In this way, the expansion of the rear cavity of the loudspeaker can be realized, and compared with the Bass powder with a higher price in the related art, the rear cavity expansion method of the loudspeaker has a higher cost performance. Compared with the power amplifier in the related art, since the sealing structure can divide the first cavity with a required volume according to the requirement, the volume of the rear cavity can be expanded according to the requirement, so that the loudspeaker can have a better sound quality performance, and the sound quality is obviously improved.

[0011] In some implementations, the loudspeaker further includes a core, the core is installed in the inner cavity to divide the inner cavity into the second cavity and the third cavity.

[0012] By adopting the above scheme, the core is used as a sound generating component of the loudspeaker, and the inner cavity is divided into two different cavities through the core, so that the loudspeaker 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 expanding 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 shell enclose the second cavity.

[0014] By adopting the above scheme, the second cavity of the loudspeaker can be an open cavity, that is, when the loudspeaker is not installed on the electronic device, the second cavity is in an open form, and after the loudspeaker is installed on the electronic device, the opening of the second cavity is covered by the device shell. By adopting the open second cavity, the components for sealing the second cavity are correspondingly reduced, which is beneficial to reducing the thickness and weight of the loudspeaker. Since the thickness of the loudspeaker is parallel to the thickness of the electronic device, reducing the thickness and weight of the loudspeaker is also beneficial to reducing the thinness of the electronic device.

[0015] In some implementations, the loudspeaker further includes a cover plate, the cover plate is fixedly connected with the shell, and the shell, the core and the cover plate enclose the third cavity.

[0016] By adopting the above scheme, the cover plate can cover the third cavity of the loudspeaker.

[0017] In some implementations, the sealing structure comprises 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 using the above scheme, the first cavity can form a relatively closed space by forming a closed figure; and the first through hole is located inside the closed figure, so that the first cavity can be in communication 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 is in abutment with the display screen.

[0021] Alternatively, one side of the sealing strip is in abutment with the first side, and the other side of the sealing strip is bonded to the display screen.

[0022] Alternatively, one side of the sealing strip is bonded to the first side, and the other side of the sealing strip is bonded to the display screen.

[0023] Alternatively, one side of the sealing strip is in abutment with the first side, and the other side of the sealing strip is in abutment with the display screen.

[0024] By using the above scheme, only one side of the two opposite sides of the sealing strip is bonded to the corresponding component, the display screen or the first side, or both sides of the sealing strip are in abutment with the corresponding component, which facilitates maintenance and assembly; in the case where the sealing strip is bonded to the first side and the sealing strip is in abutment with the display screen, the assembly precision between the display screen and the device shell can be better controlled when the display screen and the device shell are assembled, since the sealing strip is not bonded to the display screen. 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 that the sealing performance of the first cavity can be ensured after replacing the new display screen. Similarly, in the case where the sealing strip is in abutment with the first side and the sealing strip is bonded to the display screen, the installation precision of the display screen can also be controlled. In addition, when replacing the display screen, the sealing strip can be pasted under the display screen in advance. In the case where the sealing strip is in abutment with the display screen and the device shell, it is convenient to replace the sealing strip. In the case where both sides of the sealing strip are bonded, the sealing performance of the first cavity can be better ensured.

[0025] In some implementations, the first side has a closed positioning groove, and at least part of the sealing strip is located in the positioning groove.

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

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

[0028] By adopting the above scheme, the device shell can be conveniently slotted.

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

[0030] By adopting the above scheme, the sealing structure can have a certain compression amount, thereby ensuring the sealing performance between the display screen and the device shell, and ensuring the sealing performance of the first cavity.

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

[0032] By adopting the above scheme, the foam or silica gel has good elasticity and relatively low cost.

[0033] In some implementations, the second side surface has a recessed groove, and the first through hole is located at the groove bottom of the recessed groove to penetrate the first side surface and the second side surface.

[0034] The shell includes a frame, and a height of the frame extends along a thickness direction of the electronic device.

[0035] The frame is surrounded by a groove edge of the recessed groove.

[0036] By adopting the above scheme, the recessed groove is provided on the second side surface, and when the loudspeaker is installed on the device shell, the recessed groove is used to expand the rear cavity of the loudspeaker.

[0037] In some implementations, the shell is in sealing connection with the groove edge of the recessed groove.

[0038] By adopting the above scheme, the sealing connection between the shell and the groove edge of the recessed groove can ensure the sealing performance of the third cavity at the connection between the shell and the recessed groove.

[0039] In some implementations, the first cavity and the second cavity are directly communicated with the first through hole.

[0040] By adopting the above scheme, the direct communication can realize direct communication between the first cavity and the second cavity, reduce the length of the communication path therebetween, and such a design also simplifies the assembly of the loudspeaker on the electronic device and facilitates the thinning of the electronic device.

[0041] In some implementations, the back cavity of the loudspeaker includes the first cavity and the second cavity; and the front cavity of the loudspeaker is the third cavity.

[0042] By using the above scheme, the first cavity and the second cavity are used as part of the back cavity, so that the loudspeaker has a larger volume of the back cavity.

[0043] In some implementations, when the first cavity is greater than or equal to 0.1 cubic centimeters, 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 centimeters, the orifice area of the first through hole is not less than 1.5 square millimeters.

[0044] By using the above scheme, the orifice 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 loudspeaker with the expanded back cavity. BRIEF DESCRIPTION OF DRAWINGS

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

[0046] Figure 2 is an exploded structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0047] Figure 3 is a top view of the electronic device in Figure 1

[0048] Figure 4 is a sectional view along the line D-D in Figure 3

[0049] Figure 5 is a sectional view along the line E-E in Figure 3

[0050] Figure 6 is a partial enlarged schematic diagram of G in Figure 5

[0051] Figure 7 is a sectional view along the line F-F in Figure 3

[0052] Figure 8 is a partial enlarged schematic diagram of H in Figure 7

[0053] Figure 9 is a structural schematic diagram of an electronic device without installing a display screen in an embodiment of the present application;

[0054] Figure 10 is a partial structural schematic diagram of another electronic device without installing a display screen in an embodiment of the present application; ​​​​​​

[0055] Figure 11 Figure 6 is a partial structural schematic diagram of an electronic device without a display screen and a sealing structure in an embodiment of the present application;

[0056] Figure 12 Figure 7 is a structural schematic diagram of an electronic device without a back cover in an embodiment of the present application;

[0057] Figure 13 Figure 8 is a structural schematic diagram of an electronic device without a back cover and a loudspeaker in an embodiment of the present application;

[0058] Figure 14 Figure 9 is a structural schematic diagram of the loudspeaker from another perspective; Figure 13

[0059] Figure 15 Figure 11 is a structural schematic diagram of the loudspeaker when a second cavity is open in an embodiment of the present application;

[0060] Figure 16 Figure 12 is a structural schematic diagram of the loudspeaker when an outer shell and a cover plate are connected together in an embodiment of the present application;

[0061] Figure 17 Figure 13 is a comparison schematic diagram of a frequency response curve of the loudspeaker before the expansion of a rear cavity and a frequency response curve of the loudspeaker after the expansion of the rear cavity.

[0062] In the drawings, the meanings of the respective reference numerals are as follows:

[0063] 101, display screen; 102, device shell; 103, sound hole; 104, sealing structure; 105, loudspeaker; 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 table; 125, core; 126, sealing ring. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0065] ​It should be understood that the "multiple" mentioned in the present application refers to two or more. In the description of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B; "and / or" herein only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, in order to clearly describe the technical solutions of the present application, the same items or similar items with basically the same functions and roles are distinguished by using "first", "second", etc. The skilled in the art can understand that "first", "second", etc. do not limit the quantity and execution order, and "first", "second", etc. also do not necessarily mean different.

[0066] The electronic device provided by the embodiments of the present application will be explained and described in detail below.

[0067] Referring to Figure 1 , the electronic device further includes a display screen 101 and a device shell 102, the display screen 101 is connected with the device shell 102; the device shell 102 can be a middle frame; and the display screen 101 can be a liquid crystal display screen 101 or an organic light-emitting diode display screen 101, etc. Figure 1 is a structural schematic diagram of the electronic device provided by the embodiments of the present application, and the electronic device can be an electronic device such as a mobile phone, a tablet computer, a portable computer, a laptop computer, a camera, a video recorder, a smart watch, etc. The mobile phone can be a straight mobile phone or a foldable mobile phone. The embodiments of the present application do not specially limit the specific form of the above-mentioned electronic device. For the convenience of description and understanding, the electronic device is taken as a mobile phone as an example for description.

[0068] For the convenience of description, the length direction of the electronic device is defined as A-A direction, the width direction of the electronic device is defined as B-B direction, and the thickness direction of the electronic device is defined as C-C direction. The A-A direction, the B-B direction and the C-C direction are perpendicular to each other.

[0069] Referring to Figure 1 , the electronic device further includes a display screen 101 and a device shell 102, the display screen 101 is connected with the device shell 102; the device shell 102 can be a middle frame; and the display screen 101 can be a liquid crystal display screen 101 or an organic light-emitting diode display screen 101, etc.

[0070] As Figure 1 , a sound outlet hole 103 is arranged on the side of the device shell 102, the number of the sound outlet hole 103 is multiple, and the multiple sound outlet holes 103 are distributed at intervals; the sound outlet hole 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] Referring to Figure 2 , the electronic device further includes a display screen 101 and a device shell 102, the display screen 101 is connected with the device shell 102; the device shell 102 can be a middle frame; and the display screen 101 can be a liquid crystal display screen 101 or an organic light-emitting diode display screen 101, etc. Figure 2This is an exploded view of the electronic device provided in an embodiment of this 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 disposed on the same side relative to the device housing 102. The device housing 102 has a first side surface 107, and the display screen 101 is located on the side where the first side surface 107 is located. The sealing structure 104 is also located on the side where the first side surface 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 provided on the device housing 102, and the first through hole 109 is located within the shape enclosed by the sealing structure 104. The display screen 101 is bonded to the first side surface 107.

[0072] It should be noted that the back cover 106 and the device housing 102 can be a separate structure with a fixed connection, or they can be an integrated structure.

[0073] Combination Figure 3 and Figure 4 As shown, Figure 3 for Figure 1 Top view of the electronic equipment in the middle. Figure 4 It is along Figure 3 A cross-sectional view along line DD; In some embodiments, the device housing 102 also has a second side 108 opposite to the first side 107. A first through hole 109 penetrates the first side 107 and the second side 108. Since the first through hole 109 penetrates the first side 107 and the second side 108, the first through hole 109 connects the opposite sides of the device housing, thus 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 form a first cavity 110. Specifically, one side of the display screen 101, the sealing structure 104, and the first side 107 of the device housing 102 together form 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 108 is located. The speaker 105 includes a housing 115, which 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.

[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 shell 102 to facilitate expansion of the sound cavity of the loudspeaker 105, for example, the volume of the rear cavity of the loudspeaker 105 can be expanded. After the first through hole 109 is arranged on the device shell 102, the second cavity 112 of the loudspeaker 105 and the first cavity 110 are connected through the first through hole 109, and the sealing structure 104 is adopted to divide the gap space between the display screen 101 and the device shell 102 into a cavity with a required volume, and the sealing performance of the first cavity 110 is ensured through the sealing structure 104, so that the volume of the sound cavity of the loudspeaker 105 can be increased.

[0075] In this way, the expansion of the rear cavity of the loudspeaker 105 can be realized, and compared with the Bass powder with a higher price in the related art, the way of expanding the rear cavity in the present application has a higher cost performance, and the cost saving is more obvious. Compared with the power amplifier in the related art, since the sealing structure 104 can divide the first cavity 110 with a required volume as needed, the expansion of the volume of the rear cavity can be realized as needed, so that the loudspeaker 105 can have good 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 the electronic device can have a thinner shape, and the rear cavity can also be expanded in a physical way, so that the rear cavity can meet the requirement of maximum output of the loudspeaker 105 performance, ensure the sound quality performance of the loudspeaker 105, and improve the overall acoustic performance of the loudspeaker 105.

[0076] In one application scenario, compared with the loudspeaker 105 without expansion of the rear cavity, the electronic device with the expanded rear cavity of the loudspeaker 105 in 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, the first cavity 110 can also be filled with Bass powder. The Bass powder can improve the sound effect performance of the loudspeaker 105, which mainly enhances the low frequency band through sound wave reflection superposition, and also achieves the effect of virtual expansion and volume increase.

[0078] In some embodiments, the display screen 101 can 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 of the display screen 101 facing the first side 107, and the first side 107 of the device shell 102 together enclose the 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 can be, for example, a copper foil or a steel sheet.

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

[0080] Referring to Figure 4 In some embodiments, the loudspeaker 105 further includes a core 125, which is installed in the inner cavity 111 to divide the inner cavity 111 into a second cavity 112 and a third cavity 113. The core 125 serves as a sound generating component of the loudspeaker 105, and through the vibration of the core 125, the loudspeaker 105 can generate sound. The core 125 divides the inner cavity 111 into two different cavities, so that the loudspeaker 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 and the first cavity 110, because the first cavity 110 is connected to the second cavity 112 through the first through hole 109. 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] Referring to Figure 4 In some embodiments, the core 125, the shell 115, and the device shell 102 enclose the second cavity 112; specifically, the core 125, the shell 115, and the second side 108 of the device shell 102 enclose the second cavity 112, so that the second cavity 112 of the loudspeaker 105 is an open cavity, i.e., when the loudspeaker 105 is not installed on an electronic device, the second cavity 112 is in an open form, and after the loudspeaker 105 is installed on the electronic device, the opening of the second cavity 112 is covered by the device shell 102. By using an open second cavity 112, the components that seal the second cavity 112 are correspondingly reduced, which is beneficial to reducing the thickness and weight of the loudspeaker 105. The thickness of the loudspeaker 105 is parallel to the thickness of the electronic device, so that reducing the thickness and weight of the loudspeaker 105 is also beneficial to reducing the thinness of the electronic device.

[0082] Referring to Figure 4As shown, in some embodiments, the loudspeaker 105 further comprises a cover plate 114 fixedly connected with the outer shell 115, and the outer shell 115, the inner core 125 and the cover plate 114 enclose a third cavity 113. The cover plate 114 can cover the third cavity 113 of the loudspeaker 105. In an embodiment, the cover plate 114 and the outer shell 115 are in an integrated structure. The loudspeaker 105 can have a certain length, width and thickness, the thickness direction of the loudspeaker 105 is parallel to the thickness direction of the electronic device, the length direction of the loudspeaker 105 is parallel to the width direction of the electronic device, and the width direction of the loudspeaker 105 is parallel to the length direction of the electronic device.

[0083] It should be noted that, in some other possible embodiments, the cover plate 114 and the outer shell 115 can also be in a split structure, and the cover plate 114 and the outer shell 115 are fixedly connected by means of screws or adhesion. In addition, in yet some possible embodiments, the cover plate 114 can be omitted, that is, the loudspeaker 105 is open type with the third cavity 113, so that the thickness of the loudspeaker 105 can be reduced; the third cavity 113 is also in an open form, and the third cavity 113 is covered by the rear cover 106 of the electronic device, and the rear cover 106 is sealingly connected with the outer shell 115 to realize the sealing of the third cavity 113 at the connection between the rear cover 106 and the outer shell 115.

[0084] Referring to Figure 4As shown, the first cavity 110 and the second cavity 112 are directly connected to the first through hole 109. Through the direct connection, the first cavity 110 and the second cavity 112 can be directly connected, reducing the length of the connection path between them. This design also simplifies the assembly of the speaker 105 in the electronic device and facilitates the thinning of the electronic device. The area of ​​the opening of the first through-hole 109 affects the frequency response 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, resulting in a deterioration in the mid-frequency range. This will manifest as a dip in the mid-frequency range on the speaker's frequency response curve, affecting the sound performance. Therefore, the area of ​​the opening 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 area of ​​the opening 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 area of ​​the opening of the first through-hole 109 needs to be no less than 1.5 square millimeters to ensure the frequency response of the speaker 105 after the rear cavity is expanded. The volume of the first cavity 110 is positively correlated with the area of ​​the opening of the first through-hole 109, that is, the larger the volume of the first cavity 110, the larger the area of ​​the opening of the first through-hole 109 needs to be. The volume of the first cavity 110 can be from 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 orifice area of ​​the first through hole 109 can be from 1.5 square millimeters to 8 square millimeters; for example, the orifice 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.

[0085] It should be noted that in some other possible implementations, the first through hole 109 may include a plurality of sub-through holes, which penetrate through the first side and the second side.

[0086] Combination Figure 5 and Figure 6 As shown, Figure 5 It is along Figure 3 Sectional view of the EE line. Figure 6 yes Figure 5 The enlarged schematic diagram at point G shows that the 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 It is along Figure 3 Sectional view of the FF line. Figure 8 yes Figure 7A local enlarged view of the H in FIG. 10B; in some embodiments, the third cavity 113 is in communication with the sound hole 103, and in order to ensure the sealing performance of the connection between the third cavity 113 and the sound hole 103, a sealing ring 126 is used to seal the connection between the outlet of the third cavity 113 and the sound hole 103. The sealing ring 126 can be foam or silica gel.

[0088] Referring to FIG. 10A, Figure 9 as shown in FIG. 10A, Figure 9 FIG. 10B is a structural schematic diagram of an electronic device without the display screen 101 in the embodiments 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 first cavity 110 can form a relatively closed space by forming the closed figure. The first through hole 109 is located inside the closed figure, so that the first cavity 110 can be in communication with the second cavity 112. The closed figure formed by the plurality of sealing strips 116 can be circular, elliptical or polygonal, and the polygonal shape can be quadrilateral, pentagonal or hexagonal, etc.

[0089] Referring to FIG. 10A, Figure 9 as shown in FIG. 10A, in one embodiment, the plurality of sealing strips 116 can form an integrated structure, so that the sealing structure 104 is an integrated structure, which is convenient to manufacture and can ensure the sealing performance. The closed figure is quadrilateral, for example, the quadrilateral is rectangular. The hole of the first through hole 109 is located inside the closed figure, so that the first cavity 110 is in communication with the first through hole 109. The sealing strips 116 are located on the same plane on the first side surface 107, so that the sealing between the display screen 101 and the sealing strips 116 can be better achieved, and the sealing between the sealing strips 116 and the first side surface 107 can be better achieved.

[0090] It should be noted that in some other possible embodiments, the plurality of sealing strips 116 can also be in a split form and be bonded to each other. In yet some possible embodiments, the sealing structure 104 can also be in the form of a bag, and the bag opening of the bag is in communication with the first through hole 109. Or the first cavity 110 is formed by the sealing strips 116, the film structure and the second surface together, and the film structure and the sealing strips 116 can be bonded to each other to be sealed.

[0091] Referring to FIG. 10A, Figure 10 as shown in FIG. 10A, Figure 10Figure 9 is a schematic view of a partial structure of another electronic device without the display 101 in the embodiments of the present application; in other embodiments, the closed figure is a polygon, which 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 that of the second sub-cavity 118, and the width of the second sub-cavity 118 is greater than that of the third sub-cavity 119; the width direction of the three sub-cavities is parallel to the width direction of the electronic device; the length of the first sub-cavity 117 is greater than that of the third sub-cavity 119, and the length of the second sub-cavity 118 is greater than that of the third sub-cavity 119; the relationship between the length of the first sub-cavity 117 and that of the second sub-cavity 118 can be set as needed; and the aperture of the first through hole 109 is located at the third sub-cavity 119; in this way, the first cavity 110 is substantially in the shape of a convex character, which can have better acoustic performance, and makes full use of the space between the display 101 and the device housing 102, and the position of the display 101 sealing strip 116 on the first side 107 avoids the flexible circuit board of the display 101.

[0092] 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 is in abutment with the display screen 101; or, one side of the sealing strip 116 is in abutment with the first side 107, and the other side of 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 of the sealing strip 116 is bonded to the display screen 101; or, one side of the sealing strip 116 is in abutment with the first side 107, and the other side of the sealing strip 116 is in abutment with the display screen 101. In this way, only one side of the two opposite sides of the sealing strip 116 is bonded to the corresponding component, the display screen 101 or the first side 107, or both sides of the two opposite sides of the sealing strip 116 are in abutment with the corresponding components, which facilitates maintenance and assembly; in the case where the sealing strip 116 is bonded to the first side 107 and the sealing strip 116 is in abutment with the display screen 101, the assembly precision between the display screen 101 and the device housing 102 can be better controlled 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; in addition, when the display screen 101 is damaged, the display screen 101 can be easily disassembled and replaced without damaging the original sealing strip 116, so that the sealing performance of the first cavity 110 can be ensured after the new display screen 101 is replaced. Similarly, in the case where the sealing strip 116 is in abutment with the first side 107 and the sealing strip 116 is bonded to the display screen 101, the installation precision 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. In the case where the sealing strip 116 is in abutment with the display screen 101 and the device housing 102, the sealing strip 116 can be easily replaced. In the case where both sides of the two opposite sides of the sealing strip 116 are bonded, the sealing performance of the first cavity 110 can be better ensured.

[0093] It should be noted that the thickness of the sealing strip 116 in the thickness direction of the electronic device and the area size of the sealing strip 116 in the plane parallel to the length direction and the width direction of the electronic device can be determined according to actual needs.

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

[0095] Referring toFigure 11 As shown in Figure 11 Fig. 2 is a partial structural schematic diagram of an electronic device without the display screen 101 and the sealing structure 104 in the embodiment of the present application. The first side 107 has a positioning groove 120 in a closed shape, which 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, so that the positioning groove 120 can facilitate the positioning of the sealing strip 116 during installation, and to some extent, can reduce the possibility of movement of the sealing strip 116 in the use state.

[0096] In some embodiments, the positioning groove 120 is formed by a laser engraving process, so as to facilitate the slotting of the device shell 102.

[0097] It should be noted that the depth of the positioning groove 120 can be between 0.02mm and 1.5mm, for example, it can be 0.1mm, 0.2mm, or 0.5mm, or 1mm, etc., and the embodiment of the present application will not be limited specifically. In some other possible implementations, the positioning groove 120 can also be formed by processes such as stamping or die casting. In addition, the same shape as the closed shape surrounded by the sealing structure 104 can also be formed on the first side 107 by means of paint spraying or the like, so as to facilitate the assembly of the sealing structure 104.

[0098] As shown in Figure 12 As shown in Figure 12 Fig. 3 is a structural schematic diagram of an electronic device without the back cover 106 in the embodiment of the present application; the housing 115 of the loudspeaker 105 is provided with a mounting hole 121, and the loudspeaker 105 is mounted on the device shell 102 by means of a screw (not shown) passing through the mounting hole 121. The loudspeaker 105 is close to the bottom of the electronic device.

[0099] It should be noted that Figure 12 only to show the mounting position of the loudspeaker 105 on the device shell 102, and the specific form of the structure of other positions on the device shell 102 is not limited.

[0100] As shown in Figure 13 and Figure 14 As shown in Figure 13 Fig. 4 is a structural schematic diagram of an electronic device without the back cover 106 and the loudspeaker 105 in the embodiment of the present application, Figure 14 Fig. 5 is another perspective view of the structural schematic diagram of Figure 13 Fig. 5 is another perspective view of the structural schematic diagram of

[0101] It should be noted that Figure 13 and Figure 14The corresponding fixing hole opposite to the mounting hole 121 on the speaker 105 is not shown in the figure. The mounting hole 121 and the fixing hole are used to fix the speaker 105 on the device shell 102 by means of a screw.

[0102] In combination Figure 14 and Figure 15 as shown, Figure 15 is a structural schematic diagram of the speaker 105 after the second cavity 112 is opened in the embodiment of the present application. The shell 115 includes a frame 123, the height of the frame 123 extends along the thickness direction of the electronic device; the frame 123 is surrounded by the groove edge of the recessed groove 122; the back cavity of the speaker 105 can also include the recessed groove 122. In this way, the recessed groove 122 is opened on the second side 108, and when the speaker 105 is installed on the device shell 102, the recessed groove 122 can further expand the back cavity of the speaker 105. The shell 115 is sealingly connected with the groove edge of the recessed groove 122; by sealingly connecting the shell 115 with the groove edge of the recessed groove 122, the sealing property of the third cavity 113 at the connection between the shell 115 and the recessed groove 122 can be ensured. For example, the frame 123 of the shell 115 is sealingly connected with the second side 108 by means of a sealing ring 126, the sealing ring 126 is arranged along the groove edge of the recessed groove 122, and the material of the sealing ring 126 can be foam or silicone. The frame 123 is fixedly connected with the cover plate 114. The frame 123, the core 125 and the cover plate 114 of the shell 115 surround the third cavity 113 (see Figure 4 as shown).

[0103] It should be noted that in some other possible embodiments, at least part of the frame 123 extends into the recessed groove 122, which is conducive to reducing the influence of the thickness of the speaker 105 on the thickness of the electronic device, thereby facilitating the thin and light design of the electronic device.

[0104] In combination Figure 15 and Figure 16 as shown, Figure 16 is a structural schematic diagram of the frame 123 of the shell 115 of the speaker 105 connected with the cover plate 114 in the embodiment of the present application. The shell 115 has a positioning table 124, the positioning table 124 is located in the inner cavity 111, and the positioning table 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 means of adhesion or screw fixation.

[0105] Referring to Figure 17 as shown, Figure 17Fig. 1 is a schematic diagram of a comparison between a frequency response curve of a loudspeaker before expansion of a rear cavity and a frequency response curve of the loudspeaker after expansion of the rear cavity, wherein the abscissa represents frequency, the ordinate represents sound pressure level, in one application scenario, a first curve L1 represents a frequency response curve of a loudspeaker with an unexpanded rear cavity in the related art, and a second curve L2 represents a frequency response curve of the loudspeaker 105 with an expanded rear cavity in the embodiment of the present application. It can be seen from Fig. 1 that the low frequency of the loudspeaker 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 loudspeaker 105 after expansion is larger, and the improvement effect of the loudspeaker 105 is more obvious. Figure 17 It can be seen from Fig. 1 that the low frequency of the loudspeaker 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 loudspeaker 105 after expansion is larger, and the improvement effect of the loudspeaker 105 is more obvious.

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

[0107] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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 having opposing first and second sides, and a first through hole penetrating the first and second sides; A display screen, located on the same side as the first side; A sealing structure is provided, located between the device housing and the display screen. The display screen, the sealing structure, and the device housing form a first cavity, which is connected to a first through hole. The first cavity includes a first sub-cavity, a second sub-cavity, and a third sub-cavity. The width of the first sub-cavity is greater than the width of the second sub-cavity, and the width of the second sub-cavity is greater than the width of the third sub-cavity. The width directions of the three sub-cavities are all parallel to the width direction of the electronic device. The length of the first sub-cavity is greater than the length of the third sub-cavity, and the length of the second sub-cavity is greater than the length of the third sub-cavity. The opening of the first through hole is located in the third sub-cavity. A loudspeaker, located on the side where the second side is located, the loudspeaker includes a housing, the housing having an inner cavity, the inner cavity including a second cavity and a third cavity, the second cavity communicating with the first through hole; The volume of the first cavity is positively correlated with the orifice area of ​​the first through hole. When the first cavity is greater than or equal to 0.1 cubic centimeters, 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 centimeters, the orifice area of ​​the first through hole is not less than 1.5 square millimeters.

2. The electronic device as claimed in claim 1, characterized in that, The loudspeaker also includes a core, which is installed in the cavity to divide the cavity into the second cavity and the third cavity.

3. The electronic device as described in claim 2, characterized in that, The core, the outer shell, and the device housing form the second cavity.

4. The electronic device as claimed in claim 2, characterized in that, The speaker also includes a cover plate, which is fixedly connected to the outer casing, and the outer casing, the core, and the cover plate form the third cavity.

5. The electronic device as claimed in any one of claims 1-4, characterized in that, The sealing structure includes multiple sealing strips, which are connected end to end to form a closed shape; The first through hole is located inside the closed pattern.

6. The electronic device as claimed in 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 abuts against the display screen; Alternatively, one side of the sealing strip abuts against the first side, and the opposite side of the sealing strip is bonded to the display screen; Alternatively, one side of the sealing strip is bonded to the first side, and the opposite side of the sealing strip is bonded to the display screen; Alternatively, one side of the sealing strip abuts against the first side, and the opposite side of the sealing strip abuts against the display screen.

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

8. The electronic device as claimed in claim 7, characterized in that, The positioning groove is formed using laser engraving technology.

9. The electronic device as claimed in any one of claims 1-4, characterized in that, The sealing structure is made of an elastic material.

10. The electronic device as claimed in claim 9, characterized in that, The elastic material is foam or silicone.

11. The electronic device as claimed in any one of claims 1-4, characterized in that, The second side has a recessed groove, and the first through hole is located at the bottom of the recessed groove to penetrate the first side and the second side; The housing includes a frame, the height of which extends along the thickness direction of the electronic device; The border surrounds the edge of the recessed groove.

12. The electronic device as claimed in claim 11, characterized in that, The outer shell is sealed to the edge of the recessed groove.

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

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

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