A detection device and method for preventing screw loosening

By setting up a vacuum channel in the detection device that connects to the screw hole, and by using a sealing ring and a vacuum detection device, the problem of chip damage caused by screw loosening is solved, and real-time detection of screw status is achieved, improving the reliability of the detection device.

CN121163860BActive Publication Date: 2026-07-21QULIANG ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QULIANG ELECTRONICS CO LTD
Filing Date
2025-09-23
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing testing devices, loose screws can damage the chip or the internal electrical components of the test socket when the chip is pressed into the test socket. Furthermore, existing fiber optic sensor solutions are costly and difficult to implement.

Method used

By setting up a vacuum channel in the detection device that connects to the screw hole, vacuum detection is used to determine whether the screw is loose. Real-time detection is achieved by combining a sealing ring and a vacuum detection device.

Benefits of technology

It enables real-time detection of loose screws, improving the reliability and stability of detection, reducing costs, and increasing production efficiency and yield.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a detection device and method for preventing screw loosening, which is used for sucking a chip and pressing the chip into a test seat to detect the chip. The detection device comprises a pressing device, a test arm and a vacuum air duct. The pressing device comprises a connecting part, a suction part and the vacuum air duct penetrating through the connecting part and the suction part. The suction part is used for sucking the chip. The connecting part has at least two screw holes. The vacuum air duct near one end of the connecting part is communicated with any screw hole through a connecting air duct. The test arm is connected with the connecting part through a fastening screw. The fastening screw is installed in the screw hole to form a closed state. The test arm further comprises a vacuum suction port. The vacuum suction port is communicated with the vacuum air duct near one end of the connecting part and is sealed with the outside. The vacuum air duct of the pressing device is communicated with the screw hole. When the fastening screw is loosened, the vacuum air duct cannot be sealed. Whether the screw is loosened can be judged by the chip suction condition, and real-time detection of the screw state is realized.
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Citation Information

Patent Citations

  • Probe test seat, test system and method

    CN113917196A

  • The Sticking / De-Sticking Device For Press Materials

    KR101619757B1