Cylinder, use of a cylinder

The cylinder design with wireless position detection units and internal energy supply addresses the complexity of cabling in existing cylinders, facilitating flexible and reliable position sensing with reduced assembly effort.

DE102021112746B4Active Publication Date: 2026-07-02HANS E WINKELMANN GMBH
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
HANS E WINKELMANN GMBH
Filing Date
2021-05-17
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Existing pneumatic and hydraulic cylinders require complex cabling for position detection, which complicates assembly and limits flexible positioning of proximity switches or sensors.

Method used

A cylinder design incorporating a position detection unit with a transmitter unit for wireless signal transmission and an internal energy supply, eliminating the need for external wiring, utilizing kinetic energy conversion or battery-free technologies like EnOcean for power, and employing actuating units such as pins or magnets for reliable position sensing.

Benefits of technology

Enables flexible and efficient position detection with minimal assembly effort, reducing susceptibility to errors and ensuring robust operation without external power sources.

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Abstract

Cylinder (1), comprising a cylinder housing (10) with a cover element (11), a base element (13) and a piston (20), wherein the piston (20) is movably mounted in the cylinder housing (10) between a retracted position (P1) and an extended position (P2) along a piston axis (30), wherein at least one position detection unit (40) is provided by means of which an actual position of the piston (20) with respect to the piston axis (30) can be determined, wherein the at least one position detection unit (40) comprises a transmitter unit (41) for generating a signal for wireless transmission of the actual position to a control unit (100), and the at least one position detection unit (40) comprises an internal energy supply unit (42) for supplying energy to the position detection unit (40), characterized in that the energy supply unit (42) is connected to the position detection unit (40) and its transmitter unit (41) is summarized as a unit,wherein the cylinder housing (10) has two separate cavities (15), one cavity (15) being provided in the cover element (11) and one cavity (15) being provided in the bottom element (13), each cavity (15) containing a position detection unit (40).
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Citation Information

Patent Citations

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