Rotary knob screen with waterproof structure

By combining the water guide ring groove and the water baffle ring with the labyrinth sealing component, the problem of the knob screen's sealing performance deterioration in humid environments is solved, achieving a balance between rotational flexibility and waterproof reliability, and enhancing the real-time detection and early warning capabilities for water ingress.

CN122395874APending Publication Date: 2026-07-14SHENZHEN RIXIN OPTOELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN RIXIN OPTOELECTRONICS CO LTD
Filing Date
2026-04-17
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

When existing rotary knobs are used in humid or wet environments, the sealing rings wear and age, causing a decline in sealing performance, which affects rotation flexibility and waterproof reliability.

Method used

The design employs a combination of a water-guiding ring groove and a water-blocking ring, along with a labyrinth sealing component and a phase change material encapsulation block. Water is guided by the water-guiding ring groove and pressure is gradually reduced through the labyrinth channel to prevent water penetration. Real-time detection and early warning are achieved using waterproof lubricant and a penetration detection component.

Benefits of technology

While ensuring rotational flexibility, the waterproof reliability of the knob screen has been improved, enabling water blocking and drainage, enhancing sealing performance, and providing real-time detection and graded early warning functions for water ingress.

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Abstract

This application relates to a rotary screen with a waterproof structure, belonging to the technical field of display control devices. The rotary screen includes a housing, comprising a mounting base and a display bracket; a PCB board fixed inside the mounting base; a hollow encoder fixed on the PCB board; a display screen, with one end of the display bracket connected to the display screen and the other end coaxially connected to the fixed inner ring of the hollow encoder; and a rotary assembly including a rotating ring coaxially sleeved on the outside of the mounting base, with an extension bracket coaxially fixed inside the rotating ring, located between the display bracket and the mounting base, and coaxially connected to the rotating outer ring of the hollow encoder; a water-guiding groove coaxially formed at one end of the rotating ring, and a water-blocking ring coaxially disposed on the display bracket, coaxially disposed with the water-guiding groove, one end of the water-blocking ring fixedly connected to the display bracket, and the other end inserted into the water-guiding groove. This application can improve the waterproof reliability of the rotary screen while ensuring the smooth rotation of the rotating ring.
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