DK200901249A - Linear actuator with clamp protection - Google Patents

Linear actuator with clamp protection Download PDF

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Publication number
DK200901249A
DK200901249A DKPA200901249A DKPA200901249A DK200901249A DK 200901249 A DK200901249 A DK 200901249A DK PA200901249 A DKPA200901249 A DK PA200901249A DK PA200901249 A DKPA200901249 A DK PA200901249A DK 200901249 A DK200901249 A DK 200901249A
Authority
DK
Denmark
Prior art keywords
motor
force sensor
linear actuator
actuator according
housing
Prior art date
Application number
DKPA200901249A
Other languages
Danish (da)
Inventor
Lorenzen Kurt
Larsen Lasse Christian
Original Assignee
Linak As
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 filed Critical Linak As
Priority to DKPA200901249A priority Critical patent/DK200901249A/en
Priority to DE202010015736U priority patent/DE202010015736U1/en
Publication of DK200901249A publication Critical patent/DK200901249A/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
    • 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
    • F16H25/2021—Screw mechanisms with means for avoiding overloading
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/04—Tables with tops of variable height with vertical spindle

Abstract

En lineær aktuator omfattende en reverserbar lavvolts elmotor (3) anbragt i et kabinet (7). Motoren (3) driver via en transmission (4) en spindel (5), hvorpå der sidder en mod rotation fastholdt spindelmøtrik (10) forbundet med et indstillingselement (11) . Alternativt kan spindelmetrikken (10) i sig selv være udformet som et indstillingselement. Aktuatoren omfatter en klem beskyttelsesindretning med en kraftsensor (12,l2a) Såfremt indstillingselementet (11) og/eller spindel møtrikken (10) bliver obstrueret i sin bevægelse kan dette detekteret ud fra signalerne fra kraftsensoren (12,12a) . Kraftsensoren (12,12a) er placeret mellem motoren (3) og kabinettet (7) således, at kraftsensoren (12,l2a) påvirkes af motoren (3). Dette giver mulighed for en nem placering af kraftsensoren, ligesom der kan anvendes forskellige typer af kraftsensorer som stram gauges og piezoelementer. Der er også mulighed for at anbringe kraftsensoren i et forspændt elastomert materiale, så som i en skumbA linear actuator comprising a reversible low voltage electric motor (3) housed in a housing (7). The motor (3) drives via a transmission (4) a spindle (5), on which a spindle nut (10) held against rotation is connected to a setting element (11). Alternatively, the spindle metric (10) may itself be designed as a setting element. The actuator comprises a clamp protection device with a force sensor (12, 12a). If the adjusting element (11) and / or the spindle nut (10) becomes obstructed in its movement, this can be detected from the signals from the force sensor (12, 12a). The force sensor (12,12a) is located between the motor (3) and the housing (7) so that the force sensor (12, 12a) is affected by the motor (3). This allows for an easy placement of the force sensor, just as different types of force sensors can be used such as tight gauges and piezo elements. It is also possible to place the force sensor in a prestressed elastomeric material, such as in a foam

Claims (8)

1. Lineær aktuator omfattende en reverserbar lavvoltselmotor (3) anbragt i et kabinet (7) , hvilke motor (3)har en motoraksel og som via en transmission (4) driveren spindel (5), hvorpå der sidder en mod rotationfastholdt spindelmøtrik (10) forbundet med etindstillingselement (11) eller hvor spindelmøtrikken (10)i sig selv er udformet som et indstillingselement og somomfatter en klembeskyttelsesindretning med en kraftsensor(12,12a) og såfremt indstillingselementet (11) og/ellerspindelmøtrikken (10) bliver obstrueret i sin bevægelsekan dette detekteret ud fra signalerne fra kraftsensoren(12,12a), kendetegnet ved, at kraftsensoren(12,12a) er placeret mellem motoren (3) og kabinettet (7)således, at kraftsensoren (12,12a) påvirkes af motoren(3) .A linear actuator comprising a reversible low-voltage motor (3) arranged in a housing (7), said motor (3) having a motor shaft and which via a transmission (4) drives the spindle (5), on which is mounted a rotary spindle nut (10). ) connected to a setting element (11) or wherein the spindle nut (10) is in itself designed as a setting element and comprising a clamp protection device with a force sensor (12, 12a) and if the setting element (11) and / or the spindle nut (10) are obstructed in its movement channel this detected from the signals from the power sensor (12,12a), characterized in that the power sensor (12,12a) is located between the motor (3) and the housing (7) so that the power sensor (12,12a) is influenced by the motor (3) . 2. Lineær aktuator ifølge krav 1, kendetegnetved, at kraftsensoren (12,12a) er anbragt i forbindelsemed et forspændt element (6;18,19;20,21) i aktuatoren.Linear actuator according to claim 1, characterized in that the force sensor (12,12a) is arranged in connection with a biased element (6; 18,19; 20,21) in the actuator. 3. Lineær aktuator ifølge krav i, kendetegnetved, at kraftsensoren (12,12a) er placeret således, atden påvirkes af motoren (3) i en retning vinkelret påmotorakslen.Linear actuator according to claim i, characterized in that the force sensor (12, 12a) is positioned so that it is actuated by the motor (3) in a direction perpendicular to the motor shaft. 4. Lineær aktuator ifølge krav 1, kendetegnetved, at kraftsensoren er en strain gauge (12a).Linear actuator according to claim 1, characterized in that the force sensor is a strain gauge (12a). 5. Lineær aktuator ifølge krav l, kendetegnetved, at kraftsensoren er et piezoelement (12).Linear actuator according to claim 1, characterized in that the force sensor is a piezo element (12). 6. Lineær aktuator ifølge krav i, kendetegnetved, at motoren (3) er fastholdt i kabinettet {7) medmindst et fjederelement.Linear actuator according to claim i, characterized in that the motor (3) is held in the housing (7) with at least one spring element. 7. Lineær aktuator ifølge krav 6, kendetegnetved, at fjederelementet udgøres af et elastomertmateriale (6,-18,19).Linear actuator according to claim 6, characterized in that the spring element is constituted by an elastomeric material (6, -18,19). 8. Lineær aktuator ifølge krav 7, kendetegnetved, at det elastomere materiale udgøres af en blok (6),hvori der er en hulhed (15) for hel eller delvist lejringaf motoren (3).Linear actuator according to claim 7, characterized in that the elastomeric material is constituted by a block (6) in which there is a cavity (15) for the whole or partial bearing of the motor (3).
Figure DK200901249AC00051
Figure DK200901249AC00051
Figure DK200901249AC00061
Figure DK200901249AC00061
DKPA200901249A 2009-11-26 2009-11-26 Linear actuator with clamp protection DK200901249A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DKPA200901249A DK200901249A (en) 2009-11-26 2009-11-26 Linear actuator with clamp protection
DE202010015736U DE202010015736U1 (en) 2009-11-26 2010-11-24 linear actuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200901249A DK200901249A (en) 2009-11-26 2009-11-26 Linear actuator with clamp protection
DK200901249 2009-11-26

Publications (1)

Publication Number Publication Date
DK200901249A true DK200901249A (en) 2011-05-27

Family

ID=43853372

Family Applications (1)

Application Number Title Priority Date Filing Date
DKPA200901249A DK200901249A (en) 2009-11-26 2009-11-26 Linear actuator with clamp protection

Country Status (2)

Country Link
DE (1) DE202010015736U1 (en)
DK (1) DK200901249A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT514743B1 (en) * 2013-09-13 2017-12-15 Blum Gmbh Julius Device for moving a furniture part
DE102020211550A1 (en) 2020-09-15 2022-03-17 Kesseböhmer Holding Kg Drive system for moving a height-adjustable tabletop, table with such a drive system and method for detecting a collision of a height-adjustable tabletop
DE102021206231A1 (en) * 2021-06-17 2022-12-22 Veyhl Gmbh Height-adjustable table leg, table frame and table
CN217756785U (en) * 2022-06-15 2022-11-08 浙江捷昌线性驱动科技股份有限公司 Lifting upright post with resistance detection function and electric lifting mechanism

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307799A (en) 1979-12-05 1981-12-29 Andco Actuator Products, Inc. Linear actuator
US4846011A (en) 1988-02-29 1989-07-11 Gaffney Edward J Clutch assembly
DK4094A (en) 1994-01-10 1995-07-11 Linak As Linear actuator
JP2984752B2 (en) 1994-10-18 1999-11-29 コツホ，デイートマー Mechanisms for adjusting seating and reclining furniture components
US5564677A (en) 1995-02-14 1996-10-15 General Electric Company Linear actuator with force switch for detecting axial load
SE516479C2 (en) 2000-05-11 2002-01-22 Artektron Ab Device is for automatic stopping and-or reversing table top ascending movement to counteract jamming tendency, with table being raisable and lowerable by motor drive
WO2003056976A1 (en) 2001-12-13 2003-07-17 Linak A/S An adjustable construction preferably an article of furniture and a squeeze protection and a drive unit thereto

Also Published As

Publication number Publication date
DE202010015736U1 (en) 2011-04-07

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