Handheld electric tool

The capacitive sensor elements in handheld electric tools are designed to be longer than the expected object length, enhancing detection accuracy and reliability by allowing sensitive detection of hand movements and specifying gripping positions, thus addressing erroneous detection issues.

WO2025201899A1 Publication Date: 2025-10-02HILTI AG
5 Cites 0 Cited by

Patent Information

Application Number
PCT/EP2025/056884
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-03-28
Filing Date
2025-03-13
Publication Date
2025-10-02

AI Technical Summary

Technical Problem

Existing handheld electric tools with capacitive sensors face issues of erroneous detection due to high sensitivity causing undesired proximity effects, making it difficult to distinguish between fingertip contact capacitance and proximity capacitance, leading to complexity and reliability issues.

Method used

The design of capacitive sensor elements in handheld electric tools with a length greater than the expected maximum length of the object to be detected, ensuring sensitive detection of minor hand movements, and multiple sensor elements arranged to meet different control logic requirements, allowing safe operation by specifying desired gripping positions.

Benefits of technology

Enhances the accuracy and reliability of capacitive sensing by reducing erroneous detections, ensuring safe and efficient operation through sensitive detection of hand movements and specified gripping positions.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present invention relates to a handheld electric tool, comprising a drive device by means of which an insert operably connectable to the electric tool can be actuated, and a controller for actuating the drive device, and at least one capacitive sensor element operably connected to the controller. The electric tool further comprising at least one gripping part, the gripping part comprising a gripping region defining a gripping direction, for holding and guiding the electric tool by means of one or both hands of a user contacting the gripping region at least partially around the gripping direction. A length of the at least one sensor element in the gripping direction is not less than a length of the gripping region.
Need to check novelty before this filing date? Find Prior Art