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WO2009039853A3 - Linear actuator - Google Patents

Linear actuator Download PDF

Info

Publication number
WO2009039853A3
WO2009039853A3 PCT/DK2008/000338 DK2008000338W WO2009039853A3 WO 2009039853 A3 WO2009039853 A3 WO 2009039853A3 DK 2008000338 W DK2008000338 W DK 2008000338W WO 2009039853 A3 WO2009039853 A3 WO 2009039853A3
Authority
WO
WIPO (PCT)
Prior art keywords
spindle
nut
spindle nut
linear actuator
circuit board
Prior art date
Application number
PCT/DK2008/000338
Other languages
French (fr)
Other versions
WO2009039853A2 (en
Inventor
Jan Froehlich
Original Assignee
Linak As
Jan Froehlich
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linak As, Jan Froehlich filed Critical Linak As
Priority to DE212008000062U priority Critical patent/DE212008000062U1/en
Publication of WO2009039853A2 publication Critical patent/WO2009039853A2/en
Publication of WO2009039853A3 publication Critical patent/WO2009039853A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/2015—Means specially adapted for stopping actuators in the end position; Position sensing means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2084—Perpendicular arrangement of drive motor to screw axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/209—Arrangements for driving the actuator using worm gears

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Control Of Position Or Direction (AREA)
  • Transmission Devices (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)

Abstract

A linear actuator for instance for use during adjustment of articles of furniture of the type comprising a housing (1) with a reversible electric motor (2), which via a transmission (3) drives a spindle (4). On the spindle there is a spindle nut (5), surrounded by an outer tube (8). The nut (5) is secured against rotation and thus moves in the longitudinal direction when the spindle (4) is rotated. In a guide track (13) is mounted a printed circuit board (12) where a capacitive positioning system is constructed. The capacitive sensors (14) of the positioning system are activated by the activation block (15), mounted on the spindle nut (5). Simultaneously, the spindle nut with the activation block (15) serves to activate the end stop switches (16, 17) also mounted on the printed circuit board (12) when the spindle nut (5) reaches an end position for its migration on the spindle (4).
PCT/DK2008/000338 2007-09-27 2008-09-29 Linear actuator WO2009039853A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212008000062U DE212008000062U1 (en) 2007-09-27 2008-09-29 linear actuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200701388 2007-09-27
DKPA200701388 2007-09-27

Publications (2)

Publication Number Publication Date
WO2009039853A2 WO2009039853A2 (en) 2009-04-02
WO2009039853A3 true WO2009039853A3 (en) 2009-07-16

Family

ID=40202919

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2008/000338 WO2009039853A2 (en) 2007-09-27 2008-09-29 Linear actuator

Country Status (2)

Country Link
DE (1) DE212008000062U1 (en)
WO (1) WO2009039853A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2290260T3 (en) 2009-08-31 2013-01-07 Kih Utveckling Ab Linear actuator including an end-stop detector
DE102011086037A1 (en) * 2011-11-09 2013-05-16 Dewertokin Gmbh Electromotive linear drive, in particular for adjusting reclining and seating furniture
WO2015105448A1 (en) * 2014-01-07 2015-07-16 Aktiebolaget Skf Capacitive position measuring of electro-mechanical linear actuator
TWM590010U (en) * 2019-11-18 2020-02-01 海麥斯科技有限公司 Single motor driven lifting table leg structure
DE102020122368B4 (en) * 2020-08-26 2024-01-11 Ewellix AB Position sensor and manufacturing method as well as method for determining a position of a linear actuator
DE102023112298A1 (en) * 2023-05-10 2024-11-14 Auma Riester Gmbh & Co. Kg actuator with electric motor
DE102023112297A1 (en) 2023-05-10 2024-11-14 Auma Riester Gmbh & Co. Kg actuator of automation technology

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE872643C (en) * 1944-10-07 1953-04-02 Pierre Buisson Device for measuring the change in distance between two elements by measuring the change in capacitance
DE2945895A1 (en) * 1979-11-14 1981-05-27 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen MAGNETIC LENGTH MEASURING SYSTEM PREFERABLY FOR MEASURING THE POSITION OF HYDRAULIC AND PNEUMATIC CYLINDERS
DE20009155U1 (en) * 2000-05-20 2000-08-24 Festo AG & Co, 73734 Esslingen Position detection device and adjusting device equipped therewith
US20030034774A1 (en) * 2001-08-16 2003-02-20 Delphi Technologies, Inc. Hall effect position sensing in a powered parking brake system
DE10164580C1 (en) * 2001-12-28 2003-04-17 Esw Extel Systems Wedel Ges Fu Length detection device for electromechanical linear drive, uses linear sensor with measuring rod and cooperating position source attached to drive spindle
US20060213297A1 (en) * 2005-03-12 2006-09-28 Elero Gmbh Drive system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809833A (en) 1996-09-24 1998-09-22 Dana Corporation Linear actuator
AU2001293682B2 (en) 2000-10-03 2005-07-07 Linak A/S A linear actuator
DK174879B1 (en) 2001-10-03 2004-01-19 Linak As Actuator
DE102005052796B4 (en) 2005-11-05 2014-01-09 Ilcon Gmbh Linear drive with displacement measurement
AU2007250344A1 (en) 2006-05-13 2007-11-22 Linak A/S Linear actuator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE872643C (en) * 1944-10-07 1953-04-02 Pierre Buisson Device for measuring the change in distance between two elements by measuring the change in capacitance
DE2945895A1 (en) * 1979-11-14 1981-05-27 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen MAGNETIC LENGTH MEASURING SYSTEM PREFERABLY FOR MEASURING THE POSITION OF HYDRAULIC AND PNEUMATIC CYLINDERS
DE20009155U1 (en) * 2000-05-20 2000-08-24 Festo AG & Co, 73734 Esslingen Position detection device and adjusting device equipped therewith
US20030034774A1 (en) * 2001-08-16 2003-02-20 Delphi Technologies, Inc. Hall effect position sensing in a powered parking brake system
DE10164580C1 (en) * 2001-12-28 2003-04-17 Esw Extel Systems Wedel Ges Fu Length detection device for electromechanical linear drive, uses linear sensor with measuring rod and cooperating position source attached to drive spindle
US20060213297A1 (en) * 2005-03-12 2006-09-28 Elero Gmbh Drive system

Also Published As

Publication number Publication date
DE212008000062U1 (en) 2010-12-23
WO2009039853A2 (en) 2009-04-02

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