Wearable glue-filling electronic product and preparation method thereof

The transparent insulating plastic back cover, which is integrally injection molded, is connected to the mid-frame, solving the problem of assembly gaps between the back cover and the mid-frame of the smartwatch, thus achieving a thinner and lighter design, improved waterproof performance, and enhanced signal accuracy.

CN122386610APending Publication Date: 2026-07-14ZHOUHAI INTELLIGENT (SHENZHEN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHOUHAI INTELLIGENT (SHENZHEN) CO LTD
Filing Date
2026-04-24
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing smartwatches have assembly gaps between the back cover and the watch case frame, which makes it easy for sweat, dander, dust, etc. to get stuck, making them difficult to clean. In addition, traditional designs require additional waterproof gaskets and locking connectors, resulting in a complex structure and insufficient waterproof performance.

Method used

The transparent insulating plastic back cover is made of one-piece injection molding. The lower opening of the middle frame is integrally molded with the back cover to form a seamless connection. It is combined with transparent insulating plastic materials such as polycarbonate and polymethyl methacrylate to fill the gaps and improve waterproof performance. At the same time, a light shield is set in the photoelectric heart rate detection module to block stray light and avoid signal distortion.

Benefits of technology

It achieves a seamless waterproof and lightweight design, simplifies the structure, improves wearing comfort and waterproof performance, while ensuring optical transmittance and insulation, and avoids dirt accumulation and signal interference in gaps.

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Abstract

The application belongs to the technical field of electronic equipment, and discloses a wearable glue-filling electronic product and a preparation method thereof. The wearable glue-filling electronic product comprises a watch body, the shell of the watch body comprises a middle frame and a back cover, the middle frame has a through inner cavity, and opposite upper and lower opening ends are formed, the back cover and the middle frame enclose to form a containing cavity for containing components and devices, the back cover is integrally injection molded at the lower opening end of the middle frame, and the outer surface of the back cover is a polished plane. The scheme directly uses the middle frame as an injection molding insert, integrally injection molds the back cover in situ at the lower opening end of the middle frame, and after the molten glue material fully infiltrates and solidifies on the bonding surface of the middle frame, a seamless connection is formed, thereby avoiding the assembly joint gap generated by traditional split assembly. After the back cover is formed, the outer surface is polished, and the flatness and skin comfort during wearing are further ensured. The application solves the problem of assembly joint gap between the back cover and the middle frame of the watch shell.
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