Loudspeaker sealing structure and mobile terminal

Abstract

The utility model discloses a horn sealing structure and a mobile terminal, the horn sealing structure is arranged in a middle frame housing of the mobile terminal, and the horn sealing structure comprises a horn main body, a waterproof glue assembly and an annular sealing layer; one side of the annular sealing layer is arranged on the periphery of the outlet of the loudspeaker body in a sealed mode, and one side of the waterproof glue assembly is arranged on the inner side of the through hole of the middle frame shell in a sealed mode. The loudspeaker main body is arranged in the middle frame shell, and the other side of the annular sealing layer is in sealed abutting contact with the other side of the waterproof glue assembly. While the LDS antenna area requirement of the loudspeaker main body is met, the waterproof sealing width is increased, and the waterproof performance of the mobile terminal is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment loudspeakers, in particular to a loudspeaker sealing structure and a mobile terminal. Background Art

[0002] Currently, sealing solutions for speaker boxes and housings in mobile terminals or electronic devices, such as rugged phones and tablets, typically involve first applying sealing silicone to the speaker box and then pressing and sealing the speaker box against the midframe. This prior art suffers from the following drawbacks: To increase the LDS antenna area on the speaker box's upper cover (1), glue must be added toward the lower cover. This increased antenna area reduces the sealing width of the lower cover, leading to leakage in the assembly gap between the upper and lower covers. Consequently, while maintaining the LDS antenna area, the sealing silicone's sealing width within the midframe is limited, failing to meet the design's required sealing width and increasing the risk of waterproofing failure. Utility Model Content

[0003] The purpose of the utility model is to provide a speaker sealing structure which can increase the width of the waterproof seal while meeting the area requirement of the LDS antenna of the speaker body, thereby ensuring the waterproof performance of the mobile terminal.

[0004] Another object of the present invention is to provide a mobile terminal that can meet the area requirements of the LDS antenna of the speaker body and has good waterproof performance.

[0005] In order to achieve the above-mentioned purpose, the speaker sealing structure provided by the utility model is arranged in the middle frame shell of the mobile terminal, including a speaker body, a waterproof glue assembly and an annular sealing layer; one side of the annular sealing layer is sealedly arranged around the outlet of the speaker body, and one side of the waterproof glue assembly is sealedly arranged on the inner side of the through hole of the middle frame shell; the speaker body is arranged in the middle frame shell, and the other side of the annular sealing layer is in sealed pressure contact with the other side of the waterproof glue assembly.

[0006] Compared with the prior art, the present invention sealingly arranges an annular sealing layer around the outlet of the speaker body, and sealingly arranges a waterproof glue component on the inner side of the through hole of the middle frame shell, and makes the other side of the annular sealing layer in sealed pressure contact with the other side of the waterproof glue component. By adding an annular sealing layer between the speaker body and the waterproof glue component, and utilizing the annular sealing layer to stick to the end face of the outlet of the speaker body, the width of the waterproof seal can be increased while meeting the LDS antenna area requirements, thereby ensuring the waterproof performance of the mobile terminal.

[0007] Preferably, the speaker body includes an upper cover and a lower cover, the upper cover and the lower cover are sealed together, and the outlet is provided on the end surface of the lower cover. By providing the upper cover and the lower cover, the requirement of increasing the LDS antenna area between the upper cover and the lower cover can be met.

[0008] Specifically, a boss protruding toward the lower cover is provided on the upper front end side of the upper cover, and the lower cover is provided with a recess that cooperates with the boss. An LDS antenna is provided on the outer end surface of the upper cover, and the LDS antenna extends to the outer end surface of the boss and reaches the edge of the assembly gap between the boss and the recess.

[0009] Specifically, the annular sealing layer is provided on the end surface of the lower cover, with one side of the annular sealing layer extending to the outer end surfaces of the boss and the outer end surfaces of the upper cover to cover the assembly gap. This allows the assembly gap to be sealed while meeting the requirement of increasing the LDS antenna area, thereby increasing the sealing width of the speaker body and improving waterproof performance.

[0010] Specifically, the width of the annular sealing layer extending from covering the assembly gap to the end surface of the upper cover is at least 0.4 mm.

[0011] Specifically, the width of the annular sealing layer extending from the edge of the inner hole to the end surface of the upper cover is at least 1.2 mm.

[0012] Preferably, the annular sealing layer is a PET polyester film layer. The PET polyester film layer has good waterproof performance, which greatly improves the waterproof performance of the speaker sealing mechanism.

[0013] Preferably, a first waterproof glue layer is bonded between one side of the annular sealing layer and the outlet end surface of the speaker body.

[0014] Preferably, a second waterproof glue layer is bonded between one side of the waterproof glue component and the inner side of the through hole of the middle frame shell.

[0015] A mobile terminal includes an operation panel, a bottom shell, a middle frame shell, a control circuit board, and a speaker sealing structure. The middle frame shell is arranged between the operation panel and the bottom shell and encloses an inner cavity. The control circuit board and the speaker sealing structure are arranged in the inner cavity. The speaker body of the speaker sealing structure and the operation panel are respectively electrically connected to the control circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the speaker sealing structure of the present invention.

[0017] Figure 2 It is an exploded view of the speaker sealing structure of the present invention.

[0018] Figure 3 It is a cross-sectional view of the speaker sealing structure of the utility model.

[0019] Figure 4 It is a structural diagram of the annular sealing layer of the speaker sealing structure of the present invention. DETAILED DESCRIPTION

[0020] In order to explain the technical content, structural features and effects achieved by the present invention in detail, the following is a detailed description in conjunction with the embodiments and the accompanying drawings.

[0021] The mobile terminal of the present invention includes an operation panel, a bottom shell, a middle frame shell, a control circuit board and a speaker sealing structure. The middle frame shell is arranged between the operation panel and the bottom shell and encloses an inner cavity. The control circuit board and the speaker sealing structure are arranged in the inner cavity. The speaker sealing structure and the operation panel are electrically connected to the control circuit board respectively. The operation panel is a display screen. The mobile terminal of the present invention is a mobile terminal such as a mobile phone or a tablet computer. Figures 1 to 3 As shown, the speaker sealing structure 100 includes a speaker body 1, a waterproof glue assembly 2 and an annular sealing layer 3; the speaker body 1 is electrically connected to the control circuit board; one side of the annular sealing layer 3 is sealedly adhered to the periphery of the outlet 1a of the speaker body 1 through a first waterproof glue layer 4, and one side of the waterproof glue assembly 2 is sealedly adhered to the inner side of the through hole 201 of the middle frame shell 200 through a second waterproof glue layer 5; the speaker body 1 is arranged in the middle frame shell 200, the outlet 1a of the speaker body 1 is opposite to the through hole 201 of the middle frame shell 200, and the other side of the annular sealing layer 3 is in sealed pressure contact with the other side of the waterproof glue assembly 2.

[0022] See also Figure 2 and Figure 3The speaker body 1 includes an upper cover 11 and a lower cover 12, which seal together. The outlet 1a is located on the outer end surface of the lower cover 12. A boss 11a is provided on the upper front end of the upper cover 11, projecting toward the lower cover 12. The lower cover 12 has a recess 12a that mates with the boss 11a, forming an assembly gap 1b therebetween. An LDS antenna 11b is provided on the outer end surface of the upper cover 11, extending from the outer end surface of the upper cover 11 to the outer end surface of the boss 11a, reaching the edge of the assembly gap 1b. The provision of the upper and lower covers 11, 12, and the boss 11a increases the area on the outer end surface of the boss 11a to accommodate the LDS antenna 11b. The annular sealing layer 3 is disposed on the outer end surface of the lower cover 12, and one side of the annular sealing layer 3 extends to the outer end surface of the upper cover 11, covering the assembly gap 1b and the outer end surface of the boss 11a. This allows the assembly gap 1b to be sealed while increasing the area of ​​the LDS antenna 11b, thereby increasing the sealing width of the speaker body 1 and improving waterproof performance.

[0023] See also Figure 3 and Figure 4 The width M of the annular sealing layer 3 extending from the assembly gap 1b to the outer end surface of the upper cover 11 is at least 0.4 mm. Since the maximum width from the inner edge to the outer edge of the outlet 1a of the upper cover 11 is 0.8 mm, the width L of the annular sealing layer 3 extending from the edge of its inner hole 3a to the end surface of the upper cover 11 is at least 1.2 mm; this meets the waterproof requirements of IPX7 and above.

[0024] The annular sealing layer 3 is a PET polyester film layer. The PET polyester film layer has good waterproof performance, which greatly improves the waterproof performance of the speaker sealing mechanism 100.

[0025] In conjunction with the above-mentioned drawings, the assembly method of the speaker sealing structure 100 of the present invention is as follows: First, the waterproof glue assembly 2 is glued and fixed to the inner side of the through hole 201 of the middle frame shell 200 through the second waterproof glue layer 5. Then, the upper cover 11 and the lower cover 12 are fixed together by ultrasonic welding. After that, the annular sealing layer 3 is glued and fixed to the four sides of the ultrasonically welded speaker body 1 through the first waterproof glue layer 4, so that the edge of the annular sealing layer 3 can cover the assembly gap 1b, the outer end surface of the boss 11a, and the outer end surface of the lower cover 12. Finally, the speaker body 1 with the annular sealing layer 3 attached is inserted obliquely into the corresponding position of the middle frame shell 200, so that the outlet 1a of the speaker body 1 is directly opposite to the through hole 201 of the middle frame shell 200, and the annular sealing layer 3 and the opposite sides of the waterproof glue assembly 2 are pressed against each other to achieve the purpose of sealing and waterproofing.

[0026] Compared with the prior art, the present invention sealingly arranges an annular sealing layer 3 around the outlet 1a of the speaker body 1, and sealingly arranges a waterproof glue component 2 on the inner side of the through hole 201 of the middle frame shell 200, and makes the other side of the annular sealing layer 3 in sealed pressure contact with the other side of the waterproof glue component 2. By adding an annular sealing layer 3 between the speaker body 1 and the waterproof glue component 2, and utilizing the annular sealing layer 3 to be bonded to the end face of the outlet 1a of the speaker body 1, the width of the waterproof seal can be increased while meeting the LDS antenna area requirements, thereby improving the waterproof performance of the mobile terminal.

[0027] The structures of the speaker body 1 and the waterproof adhesive assembly 2 involved in the speaker sealing structure 100 of the present invention are well known to ordinary technicians in this field and will not be described in detail here.

[0028] The above disclosure is only a preferred embodiment of the present invention and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A speaker sealing structure, disposed in a middle frame housing of a mobile terminal, characterized in that: It includes a speaker body, a waterproof glue component and an annular sealing layer; one side of the annular sealing layer is sealingly arranged around the outlet of the speaker body, and one side of the waterproof glue component is sealingly arranged on the inner side of the through hole of the middle frame shell; the speaker body is arranged in the middle frame shell, and the other side of the annular sealing layer is in sealing pressure contact with the other side of the waterproof glue component.

2. The speaker sealing structure according to claim 1, wherein: The speaker body includes an upper cover and a lower cover. The upper cover and the lower cover are sealed together. The outlet is arranged on the end surface of the lower cover.

3. The speaker sealing structure according to claim 2, wherein: A boss protruding toward the lower cover is provided on the upper front end side of the upper cover, and the lower cover is provided with a recess cooperating with the boss. An LDS antenna is provided on the outer end surface of the upper cover, and the LDS antenna extends to the outer end surface of the boss and reaches the edge of the assembly gap between the boss and the recess.

4. The speaker sealing structure according to claim 3, wherein: The annular sealing layer is disposed on the end surface of the lower cover, and one side of the annular sealing layer extends to the outer end surface of the boss and the outer end surface of the upper cover to cover the assembly gap.

5. The speaker sealing structure according to claim 4, wherein: The width of the annular sealing layer extending from covering the assembly gap to the end surface of the upper cover is at least 0.4 mm.

6. The speaker sealing structure according to claim 5, wherein: The width of the annular sealing layer extending from the edge of the inner hole to the end surface of the upper cover is at least 1.2 mm.

7. The speaker sealing structure according to claim 1, wherein: The annular sealing layer is a PET polyester film layer.

8. The speaker sealing structure according to claim 1, wherein: A first waterproof glue layer is bonded between one side of the annular sealing layer and the outlet end surface of the speaker body.

9. The speaker sealing structure according to claim 1, wherein: A second waterproof glue layer is bonded between one side of the waterproof glue component and the inner side of the through hole of the middle frame shell.

10. A mobile terminal, characterized in that: It includes an operation panel, a bottom shell, a middle frame shell, a control circuit board and the speaker sealing structure according to any one of claims 1 to 9, the middle frame shell is arranged between the operation panel and the bottom shell and encloses an inner cavity, the control circuit board and the speaker sealing structure are arranged in the inner cavity, and the speaker body of the speaker sealing structure and the operation panel are electrically connected to the control circuit board respectively.

Images