A waterproof exterior door handle assembly, automobile

By combining capacitive and vibration sensors on the exterior door handles, the problem of false triggering during rain or car washing is solved, improving the accuracy and sensitivity of detection and enabling normal operation under waterproof conditions.

CN224432268UActive Publication Date: 2026-06-30BEIJING TASHAN TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING TASHAN TECHNOLOGY CO LTD
Filing Date
2025-06-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The capacitive touch buttons in existing smart cars are easily affected by water in rainy weather or when washing the car, leading to false triggering. The sealing design of traditional door handles reduces the sensitivity of vibration detection.

Method used

A waterproof exterior door handle assembly was designed, employing a combination of capacitive and vibration sensors for detection. The vibration sensor is placed inside a waterproof sealed cavity, which serves as a vibration conduction or amplification structure. Signal processing is performed through a capacitive digital conversion circuit and a processor to ensure detection accuracy.

Benefits of technology

It effectively improves the opening rate and false trigger rate of door detection, reduces false triggering caused by environmental interference, and ensures normal operation in rainy weather or when washing the car.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224432268U_ABST
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Abstract

This utility model relates to a waterproof car door handle assembly and automobile, including a capacitive digital conversion circuit, a processor, and a sensing unit; the outer surface of the handle away from the vehicle body serves as the sensing area, and the sensing unit includes at least a capacitive sensor for detecting the approach and / or contact of external objects with the sensing area, and a vibration sensor for detecting handle vibration; the handle has a waterproof sealed cavity, the vibration sensor is disposed inside the sealed cavity, and the sealed cavity is reused as a device for transmitting or amplifying vibration; the capacitive digital conversion circuit couples the capacitive sensor, and the processor couples the digital conversion circuit and the vibration sensor respectively, and the electrical connection structure between the various electronic components and the surface of the electronic components excluding the sealed cavity are covered with a waterproof layer.
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