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1. WO2013159776 - LINEAR ACTUATOR

Publication Number WO/2013/159776
Publication Date 31.10.2013
International Application No. PCT/DK2013/000031
International Filing Date 23.04.2013
IPC
G01L 1/16 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
1Measuring force or stress, in general
16using properties of piezo-electric devices
A47B 9/04 2006.01
AHUMAN NECESSITIES
47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
9Tables with tops of variable height
04with vertical spindle
G01L 5/00 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
CPC
A47B 9/04
AHUMAN NECESSITIES
47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
9Tables with tops of variable height
04with vertical spindle
G01L 1/16
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
1Measuring force or stress, in general
16using properties of piezo-electric devices
G01L 5/0009
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
0009Force sensors associated with a bearing
G01L 5/0019
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
0009Force sensors associated with a bearing
0019by using strain gages, piezo-electric, piezo-resistive or other ohmic-resistance based sensors
G01L 5/0071
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
0061Force sensors associated with industrial machines or actuators
0071Specific indicating arrangements, e.g. of overload
H02K 11/20
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
11Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
20for measuring, monitoring, testing, protecting or switching
Applicants
  • LINAK A/S [DK]/[DK]
Inventors
  • KLINKE, Norbert
  • RANDLØV, Michael Lindekilde
Agents
  • LINAK A/S
Priority Data
PA 2012 0027923.04.2012DK
Publication Language English (EN)
Filing Language Danish (DA)
Designated States
Title
(EN) LINEAR ACTUATOR
(FR) ACTIONNEUR LINÉAIRE
Abstract
(EN)
A linear actuator especially for adjustable furniture comprises a spindle (16) with a spindle nut (16a) for bringing about the adjustment of the article of furniture. At the end of the spindle (16) there is a bearing (17) for mounting of this in the actuator. The spindle/spindle nut (16,16a) is driven by an electric motor (27) through a transmission (28). For preventing accidents and/or damage during the adjustment of the article of furniture the actuator is equipped with a squeeze protection based on a piezo element (22). This piezo element (22) is arranged in connection with the bearing (17) for registering the forces or deflections of the forces affecting the spindle (16). In that the piezo element (22) has a through-going hole for the spindle the mounting of the piezo element (22) is simplified and further it has turned out that a particularly good signal/noise ratio is obtained.
(FR)
L'invention concerne un actionneur linéaire, destiné notamment à un meuble réglable, et comprenant une broche (16) munie d'un écrou de broche (16a) servant à régler le meuble. Un palier (17) se trouve à l'extrémité de la broche (16) et sert à monter cette dernière dans l'actionneur. L'ensemble broche/écrou de broche (16, 16a) est entraîné par un moteur électrique (27) par l'intermédiaire d'une transmission (28). Pour éviter des accidents et/ou des dommages lors du réglage du meuble, l'actionneur est équipé d'une protection anti-pincement à base d'un élément piézoélectrique (22). Cet élément piézoélectrique (22) est relié au palier (17) de façon à détecter les forces ou les écarts de forces qui affectent la broche (16). L'élément piézoélectrique (22) possède un trou de passage de la broche, ce qui simplifie le montage de l'élément piézoélectrique (22). En outre, un rapport signal/bruit particulièrement bon est obtenu.
Also published as
Latest bibliographic data on file with the International Bureau