Silica gel shell for bluetooth sound box

Abstract

The utility model relates to a silica gel shell for bluetooth sound equipment, including bottom shell, top shell and base, top shell is connected with bottom shell, the base is assembled in the bottom of bottom shell, the inner chamber of bottom shell is assembled with the clamping mechanism, the clamping mechanism includes first gasbag, first gasbag is assembled in the bottom of bottom shell, the outside of first gasbag is evenly connected with the elbow pipe, the other end of elbow pipe is connected with triangle clamping block, the bottom of top shell is provided with the triangular groove that is matched with triangle clamping block, the outside of triangle clamping block is assembled with second gasbag, the inner chamber of triangular groove is provided with the recess that is matched with second gasbag, the inner chamber of first gasbag is filled with slow rebound memory sponge, and the sponge density is 45D and the surface is immersed with graphene coating. The silica gel shell for bluetooth sound equipment utilizes the slope cooperation of triangle clamping block and triangular groove to form mechanical limit, significantly improves the shell connection stability, and ensures the reliable sealing performance between different batches of parts.

Description

Technical Field

[0001] This utility model relates to the field of silicone shells, specifically to a silicone shell for a Bluetooth speaker. Background Technology

[0002] Bluetooth speakers, as portable audio devices, are widely used in the consumer electronics field. Their casing structure directly affects the device's protective performance and ease of use. Traditional speaker casings are mostly made of hard plastic or metal, assembled using screws or snap-fit ​​structures. While this design meets basic protection requirements, there is room for improvement in assembly efficiency and long-term reliability. Especially for outdoor Bluetooth speakers that need to balance portability and protection levels, existing casing connection methods often suffer from cumbersome assembly processes, easy weakening of connection strength, and a high dependence on manufacturing precision in the sealing structure, resulting in significant fluctuations in sealing performance between different production batches. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned defects and provide a silicone shell for Bluetooth speakers. This solves the problems of cumbersome assembly processes and easy attenuation of connection strength in existing connection methods, as well as the high dependence of the sealing structure on processing precision, which leads to large fluctuations in sealing performance between different production batches.

[0004] The purpose of this utility model is achieved through the following means: a silicone shell for a Bluetooth speaker, comprising a bottom shell, a top shell, and a base, wherein the top shell is connected to the bottom shell, the base is assembled at the bottom of the bottom shell, and a snap-fit ​​mechanism is assembled in the inner cavity of the bottom shell, the snap-fit ​​mechanism comprising a first airbag, the first airbag being assembled at the bottom of the bottom shell, a curved tube being uniformly connected to the outside of the first airbag, the other end of the curved tube being connected to a triangular locking block, a triangular groove adapted to the triangular locking block being opened at the bottom of the top shell, a second airbag being assembled on the outside of the triangular locking block, and a groove adapted to the second airbag being opened in the inner cavity of the triangular groove.

[0005] Furthermore, the top of the top shell and the bottom of the bottom shell are both fitted with protective rubber sleeves made of TPU material through in-mold injection molding. The rubber sleeves are 1.2mm thick and have a UV coating on the surface. The four corners of the protective rubber sleeves are designed with R3 rounded corners, and the transition arcs and the contact surfaces with the shells are provided with 0.5mm deep venting grooves. The connection between the rubber sleeves and the shells is formed by laser welding to create an airtight seal.

[0006] Furthermore, both the top and bottom shells have CNC-machined button protrusion grooves at their ends, with the groove positions precisely corresponding to the button positions on the audio control circuit board. The inner wall of the button protrusion groove has a 0.3mm high silicone dustproof rim with a serrated cross-section, and the groove edges are covered with conductive cloth pads through a secondary injection molding process.

[0007] Furthermore, rectangular slots are provided on the exterior of the top and bottom shells corresponding to the positions of the audio indicator lights. An AG anti-glare protective film is embedded in the inner cavity of the slots through a vacuum adsorption process. The protective film is made of 0.2mm thick PC substrate, and its surface is etched with Fresnel lens structure. The film is sealed to the shell with hot melt adhesive around its perimeter to form a 360° seal. Annular grooves are provided on the exterior of the top and bottom shells to allow sound to pass through.

[0008] Furthermore, the top of the base and the bottom of the base shell are respectively provided with M8×0.75 fine threads, and the thread surface is coated with a nylon anti-loosening coating. The bottom of the base is provided with a hexagonal flange, and the connection between the flange and the base is provided with a stress-dispersing chamfer. The threaded connection is filled with silicone sealant.

[0009] Furthermore, the inner cavity of the first airbag is filled with slow-rebound memory foam with a density of 45D and a graphene coating on its surface. A pressure-sensitive membrane is provided on the contact surface between the bottom of the first airbag and the top of the base. When the base is tightened, the deformation of the memory foam under pressure is controlled between 15% and 20%, ensuring that the airbag always maintains a preload of 2-3N.

[0010] The beneficial effects of this utility model are:

[0011] The Bluetooth speaker uses a silicone shell. The first airbag is connected to the triangular locking block via a bent tube. When the top shell and bottom shell are assembled, the first airbag is compressed and can cause the second airbag inside the triangular locking block to expand through gas conduction, so that the top shell and bottom shell can be quickly locked together. The triangular locking block and the inclined surface of the triangular groove form a mechanical limit, which significantly improves the stability of the shell connection.

[0012] The Bluetooth speaker uses a silicone shell, and the elastic interlocking structure of the second airbag and the groove forms a double-layer sealing structure after assembly, which effectively prevents dust and liquid from entering the speaker. At the same time, the unique deformation recovery properties of silicone material can compensate for processing errors and ensure reliable sealing performance between different batches of parts. Attached Figure Description

[0013] Figure 1 This is an external schematic diagram of a silicone shell for a Bluetooth speaker according to the present invention;

[0014] Figure 2 This is a partial cross-sectional view of a silicone shell for a Bluetooth speaker according to the present invention;

[0015] Figure 3 This is a plan view of a silicone shell for a Bluetooth speaker according to the present invention;

[0016] Figure 4 This is an external schematic diagram of the snap-fit ​​mechanism in the silicone shell of a Bluetooth speaker according to this utility model.

[0017] In the diagram: 1. Bottom shell; 2. Top shell; 21. Protective rubber sleeve; 22. Button protrusion groove; 3. Base; 4. Snap-fit ​​mechanism; 41. First airbag; 42. Bend; 43. Triangular locking block; 44. Second airbag. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] In this embodiment, refer to Figures 1-4 The specific implementation of this embodiment refers to... Figures 1-4 The specific implementation of the silicone shell for a Bluetooth speaker includes a bottom shell 1, a top shell 2 and a base 3. The top shell 2 and the bottom shell 1 are detachably connected by a snap-fit ​​mechanism 4, and the base 3 is threaded onto the bottom of the bottom shell 1.

[0020] The bottom shell 1 is integrally injection molded from medical-grade liquid silicone. Its inner cavity sidewall is provided with an annular limiting groove for assembling the snap-fit ​​mechanism 4. The snap-fit ​​mechanism 4 includes a first airbag 41, which is made of high-elasticity silicone and filled with inert gas. The first airbag 41 is fixed to the annular mounting seat at the bottom of the bottom shell 1 by 3D printing. Six L-shaped bends 42 are evenly connected to its outer side along the circumferential direction. The bending radius of each bend 42 matches the curvature of the inner cavity of the bottom shell 1.

[0021] The other end of the bend 42 is connected to a triangular block 43. The surface of the block is provided with nano-level anti-slip texture. The bottom of the top shell 2 is provided with six sets of triangular grooves, and the inner wall of each set of triangular grooves is coated with Teflon coating.

[0022] The triangular block 43 is fitted with a second airbag 44. The airbag is made of honeycomb-structured silicone material. The inner cavity of the triangular groove is provided with an annular groove that is interference-fitted with the second airbag 44. The groove is pre-embedded with a wire groove for the temperature sensor.

[0023] The top of the top shell 2 and the bottom of the bottom shell 1 are both fitted with TPU protective rubber sleeves 21 through in-mold injection molding. The rubber sleeves are 1.2mm thick and have a UV coating on the surface. The four corners of the protective rubber sleeves 21 are designed with R3 rounded corners. The transition arc and the contact surface with the shell are provided with 0.5mm deep venting grooves. The connection between the rubber sleeves and the shell is formed by laser welding to form an airtight seal.

[0024] Both the top shell 2 and the bottom shell 1 have CNC precision-machined button exposure grooves 22 at their ends. The position of the groove corresponds precisely to the position of the buttons on the audio control circuit board. The inner wall of the button exposure groove 22 has a 0.3mm high silicone dustproof rim with a serrated cross-section. The edge of the groove is covered with a conductive cloth pad through a secondary injection molding process.

[0025] The top shell 2 and the bottom shell 1 have rectangular slots on their exteriors corresponding to the positions of the audio indicator lights. An AG anti-glare protective film is embedded in the inner cavity of the slots through a vacuum adsorption process. The protective film is made of 0.2mm thick PC substrate, and its surface is etched with Fresnel lens structure. The film is sealed to the shell with hot melt adhesive around its perimeter to form a 360° seal. The top shell 2 and the bottom shell 1 also have annular grooves on their exteriors to allow sound to pass through.

[0026] The top of the base 3 and the bottom of the base shell 1 are respectively provided with fine threads of M8×0.75, and the thread surface is coated with nylon anti-loosening coating.

[0027] The base 3 has a hexagonal flange at the bottom, and the connection between the flange and the base 3 has a stress-dispersing chamfer. The threaded connection is filled with silicone sealant.

[0028] The inner cavity of the first airbag 41 is filled with slow-rebound memory foam with a density of 45D and a graphene coating on its surface.

[0029] The bottom of the first airbag 41 is provided with a pressure-sensitive membrane on the contact surface between the bottom and the top of the base 3. When the base 3 is tightened, the deformation of the memory foam under pressure is controlled between 15% and 20%, ensuring that the airbag always maintains a pre-tightening force of 2-3N.

[0030] During assembly, the base 3 is connected to the bottom of the bottom shell 1 by threads, and the top of the base 3 contacts and compresses the first airbag 41, causing its internal air pressure to rise.

[0031] Compressed air is delivered to the triangular locking block 43 through the bend pipe 42, pushing it to expand outward. At the same time, the second airbag 44 inflates and expands, connecting the top shell 2 with the bottom shell 1. The expanded triangular locking block 43 is inserted into the triangular groove at the bottom of the top shell 2, and the second airbag 44 is embedded in the groove to form a double fixation, thus completing the locking of the top shell 2 and the bottom shell 1.

[0032] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A silicone housing for a Bluetooth speaker, comprising a bottom shell (1), a top shell (2), and a base (3), wherein the top shell (2) is connected to the bottom shell (1), and the base (3) is assembled to the bottom of the bottom shell (1), characterized in that: The inner cavity of the bottom shell (1) is equipped with a snap-fit ​​mechanism (4). The snap-fit ​​mechanism (4) includes a first airbag (41). The first airbag (41) is assembled at the bottom of the bottom shell (1). A curved tube (42) is uniformly connected to the outside of the first airbag (41). The other end of the curved tube (42) is connected to a triangular locking block (43). The bottom of the top shell (2) is provided with a triangular groove that matches the triangular locking block (43). A second airbag (44) is assembled on the outside of the triangular locking block (43). The inner cavity of the triangular groove is provided with a groove that matches the second airbag (44).

2. The silicone housing for a Bluetooth speaker according to claim 1, characterized in that: The top of the top shell (2) and the bottom of the bottom shell (1) are both fitted with protective rubber sleeves (21), and the outer side of the protective rubber sleeves (21) is designed with rounded corners.

3. The silicone housing for a Bluetooth speaker according to claim 2, characterized in that: Both the top shell (2) and the bottom shell (1) have button exposure grooves (22) at their ends that are far apart from each other.

4. The silicone housing for a Bluetooth speaker according to claim 3, characterized in that: Both the top shell (2) and the bottom shell (1) have slots on their exteriors, and the inner cavity of the slots is fitted with a protective membrane.

5. The silicone housing for a Bluetooth speaker according to claim 4, characterized in that: The top of the base (3) and the bottom of the bottom shell (1) are both threaded, and the two sets of threads are connected.

6. The silicone housing for a Bluetooth speaker according to claim 5, characterized in that: The inner cavity of the first airbag (41) is fitted with memory foam, and the bottom of the first airbag (41) is in contact with the top of the base (3).

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