Sound producing device and electronic product

1. A sound producing device comprising a front cover and a shell bonded together; wherein a diaphragm is accommodated in a cavity enclosed by the front cover and shell, an upper surface of the front cover away from the diaphragm is covered with an elastic sealing piece, and the elastic sealing piece and the front cover are hot pressed bonded.

2. The sound producing device of claim 1 , wherein the elastic sealing piece is made of a rubber material.

3. The sound producing device of claim 2 , wherein the elastic sealing piece is made of a solid silica gel material.

4. The sound producing device of claim 1 , wherein a sound outlet is formed on the front cover, the elastic sealing piece protrudes toward a side away from the front cover, and a protrusion formed by the elastic sealing piece is provided around the sound outlet.

5. The sound producing device of claim 1 , wherein contacts between the front cover and the shell are melting connections.

6. The sound producing device of claim 5 , wherein the front cover is made of a light-transmitting material, and a lower surface of the front cover is provided with a protruding portion, the protruding portion comprises a melted portion fixedly connected to the shell.

7. The sound producing device of claim 5 , wherein the melting connections include at least one of a laser melted connection and an ultrasonic melted connection.

8. The sound producing device of claim 1 , wherein the diaphragm is made of a rubber material, and the diaphragm and the shell are integrally injection molded.

9. The sound producing device of claim 8 , wherein the diaphragm includes a central portion and a corrugated rim portion concaved downward relative to the central portion.

10. The sound producing device of claim 9 , wherein one end of the corrugated rim portion extends upward and downward along an inner surface of the shell, respectively.

11. The sound producing device of claim 8 , wherein the rubber material is one of silicone rubber, AEM rubber and ACM rubber.

12. The sound producing device of claim 1 , wherein the hot press bonding comprises bonding by:

mixing a vulcanizing agent into the solid rubber material to form a blend thereof and then refining the blend in a rubber refiner;

cutting a refined blend of the solid rubber material into pieces of rubber compound with a set size; and

placing the front cover into a hot-pressing mold as an insert, and further placing the rubber compound into the hot-pressing mold, and hot-pressing the rubber compound onto the front cover to form the elastic sealing piece.

13. The sound producing device of claim 12 , wherein the solid rubber material is a solid silica gel material.

14. An electronic product, comprising:

the sound producing device of claim 1 ; and

a housing;

wherein the sound producing device is embedded in the housing, and the sound producing device is sealed with the housing using the elastic sealing piece.