# US 2012/0073613 A1 · Device to capture the relative position of a component of which the position can change relative to a reference component of a washing handling device, and corresponding washing handling device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2012/0073613 A1 - Document ID: US20120073613A1 - Status: Published application - Kind: A1 - Application number: 13/074,168 - Filed: 2011-03-29 - Published: 2012-03-29 - Earliest claimed: 2010-03-30 - Assignees: emz-Hanuaer GmbH & Co. KgaA - Inventors: Johann Schenkl; Johannes Baumer; Michael Sorgenfrei; Manfredi Signorino - Web page: https://patentgrep.com/patent/US20120073613A1 ## CPC - D06F 34/20: Parameters relating to constructional components, e.g. door sensors - G01B 11/16: for measuring the deformation in a solid, e.g. optical strain gauge - G01L 1/24: by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis {using infrared, visible light, ultraviolet} - D06F 2103/00: Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers - D06F 2103/64: Radiation, e.g. microwaves - D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) ## Abstract A device to capture the relative position of a component (14) of which the position can change relative to a reference component (12) of a washing handling device (10), in particular a washing machine or drier, includes at least one light source (34, 38, 42), at least one light receiver (36, 40, 44), a light-reflecting surface (50, 52), which reflects light which the light source (34, 38, 42) emits to the light receiver (36, 40, 44). The device is designed to capture the present relative position of the changeable-position component (14) relative to the reference component (12), according to the reflected light which the light receiver (36, 40, 44) captures. ## Claims ### Claim 1 A device to capture the relative position of a component of which the position can change relative to a reference component of a washing handling device, in particular a washing machine or drier, comprising: at least one light source; at least one light receiver; and a light-reflecting surface, which reflects light which the light source emits to the light receiver; the device being designed to capture the present position of the changeable position component relative to the reference component, according to the reflected light which the light receiver captures. ### Claim 2 (depends on 1) The device according to claim 1 wherein the reflecting surface is in the form of a scattering reflecting surface, which scatters and reflects the light which the light source emits. ### Claim 3 (depends on 1) The device according to claim 1 wherein the light emitted by the light source is polarised. ### Claim 4 (depends on 1) The device according to claim 1 wherein the light source is in the form of a light-emitting diode (LED), a laser diode or an infrared light source or similar. ### Claim 5 (depends on 1) The device according to claim 1 wherein the light receiver is in the form of a phototransistor, photodiode, photoresistor, passively operated LED or similar. ### Claim 6 (depends on 1) The device according to claim 1 wherein the light source and light receiver are combined next to each other in one module. ### Claim 7 (depends on 1) The device according to claim 1 comprising two or more pairs of light source and light receiver, which are arranged at different alignments to each other. ### Claim 8 (depends on 7) The device according to claim 7 wherein the distance of the pairs of light source and light receiver relative to the light-reflecting surface assigned to them is different. ### Claim 9 (depends on 7) The device according to claim 7 wherein the light-reflecting surfaces are arranged at an angle to each other. ### Claim 10 (depends on 1) The device according to claim 1 comprising a spring arrangement, which is arranged so that it prestresses at least one pair of light source and light receiver and the light-reflecting surface into a predetermined initial position relative to each other. ### Claim 11 (depends on 1) A washing handling device, in particular a washing machine or drier, comprising a housing; a changeable-position component, which is carried movably in the housing; and a device according to claim 1 wherein on one component out of housing or changeable-position component, a sensor arrangement with at least one pair of light source and light receiver is arranged, and on the other component out of housing and changeable-position component, the light-reflecting surface is arranged, and the present relative position of the changeable-position component relative to the housing can be determined according to the light reflection which the light receiver captures. ### Claim 12 (depends on 11) The washing handling device according to claim 11 wherein the changeable-position component is a tub in which a washing drum is rotatably carried, the tub being suspended in the housing so that its position can change. ### Claim 13 (depends on 12) The washing handling device according to claim 12 wherein the tub is carried in the housing by means of at least one actively controllable damper, and the damper characteristic can be adjusted according to the captured relative position of the drum receptacle in the housing. ### Claim 14 (depends on 11) The washing handling device according to claim 11 wherein the changeable-position component is a membrane which is prestressed by a spring and displaceable, and which closes and seals a pressure chamber, it being possible to capture the relative position of the membrane relative to the housing according to the captured light reflection, taking account of the compression state of the spring. ### Claim 15 (depends on 11) The washing handling device according to claim 11 wherein the changeable-position component is a force sensor which is prestressed by a spring.