Electromagnetic constant force detection structure and detection device for keyboard

By using an electromagnetic constant force detection structure, detachable weights and connecting rod units, combined with an energized electromagnetic unit, the problems of high cost and cumbersome operation of existing keyboard detection methods are solved, achieving flexible force detection and accurate load judgment.

CN224518902UActive Publication Date: 2026-07-17SHENZHEN PENGDA ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN PENGDA ELECTRONICS CO LTD
Filing Date
2025-07-01
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing keyboard detection technology is costly and cumbersome to operate, cannot flexibly handle various force requirements, and cannot determine the load at the actual connection point when the load range is not conductive.

Method used

Employing an electromagnetic constant force detection structure, the system uses detachable weights and connecting rods, combined with an energized electromagnetic unit, to provide stable electromagnetic force, enabling the vertical position of the detection probe unit to be adjusted. This allows for the replacement of weights of different weights to meet varying impact force requirements.

Benefits of technology

It enables flexible testing under different striking forces, is easy to operate, reduces costs, and improves the flexibility and accuracy of testing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of electromagnetic constant force detection structure and keyboard detection device, comprising: detection structure body;Detection needle unit, set in the foremost end of detection structure body, for with the keyboard printed circuit to be detected connection, for detecting the on-off of the keyboard printed circuit and the load required for conduction;Connecting rod unit, installed inside detection structure body, and its two ends are connected detection needle unit and first weight respectively;Connecting rod unit and first weight are detachably connected;Power-on electromagnetic unit, installed inside detection structure body;Power-on electromagnetic unit includes power-on subunit and coil subunit, provides electromagnetic force to control connecting rod unit to realize the up-down movement of detection needle unit under power-on state.By inputting stable voltage, coil subunit gives connecting rod unit stable downward driving force, first weight further increases load, as the detection needle unit of lowermost end gives the knocking force of the keyboard printed circuit to be detected, from the superposition of the above two forces.
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