# US 2013/0154461 A1 · Ejecting device for a movable furniture part > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0154461 A1 - Document ID: US20130154461A1 - Status: Published application - Kind: A1 - Application number: 13/767,099 - Filed: 2013-02-14 - Published: 2013-06-20 - Earliest claimed: 2010-08-26 - Assignees: Julius Blum GmbH - Inventors: Wolfgang BOHLE - Web page: https://patentgrep.com/patent/US20130154461A1 ## CPC - A47B 88/457: operated by electrically-powered actuation means - E05F 15/614: operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis - E05Y 2900/20: for furniture, e.g. cabinets - A47B: TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE (furniture jointing F16B) - E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract An ejecting device for a movable furniture part includes an ejector, which can be moved between a first and a second position, for ejecting the movable furniture part, a drive train having an electrical drive unit that drives the ejector and a gear mechanism arranged between the drive unit and the ejector and which has an output that acts on the ejector, and an open-loop or closed-loop control device for controlling the drive unit in an open-loop or closed-loop manner. A force accumulator is integrated in the gear mechanism between the drive unit and the output, and a monitoring device connected to the drive train can detect an unloading of the force accumulator and report the unloading to the open-loop or closed-loop control device. The open-loop or closed-loop control device activates the electrical drive unit to move the ejector back to the first position after detection of the unloading. ## Claims ### Claim 1 An ejection device for a movable furniture part, in particular a door or drawer, comprising: an ejector movable between a first position and a second position for ejecting the movable furniture part 2, a drive train having an electric drive unit for driving the ejector and a transmission arranged between the drive unit and the ejector and having a drive output acting on the ejector, and a control or regulating device for controlling or regulating the drive unit, wherein a force storage means is integrated in the transmission between the drive unit and the drive output, unloading of the force storage means can be detected by a monitoring device connected to the drive train and can be signaled to the control or regulating device, and after detection of the unloading of the force storage means the control or regulating device activates the electric drive unit for moving the ejector back into the first position. ### Claim 2 (depends on 1) An ejection device as set forth in claim 1, wherein the ejector is movable with a translatory movement. ### Claim 3 (depends on 1) An ejection device as set forth in claim 1, wherein the ejector is in one piece with the drive output of the transmission. ### Claim 4 (depends on 1) An ejection device as set forth in claim 1, wherein the electric drive unit includes an electric motor. ### Claim 5 (depends on 1) An ejection device as set forth in claim 1, wherein the transmission has two gears which are movable limitedly relative to each other. ### Claim 6 (depends on 5) An ejection device as set forth in claim 5, wherein the two gears are arranged in mutually coaxial relationship. ### Claim 7 (depends on 5) An ejection device as set forth in claim 5, wherein the first gear is connected to the drive unit by a worm and the second gear is connected to the ejector. ### Claim 8 (depends on 5) An ejection device as set forth in claim 5, wherein the force storage means is between the two gears. ### Claim 9 (depends on 8) An ejection device as set forth in claim 8, wherein the gears can be prestressed relative to each other by the force storage means. ### Claim 10 (depends on 1) An ejection device as set forth in claim 1, wherein the monitoring device has a measuring potentiometer. ### Claim 11 (depends on 1) An ejection device as set forth in claim 1, wherein the monitoring device is connected to the drive train by means of at least one monitoring gear. ### Claim 12 (depends on 11) An ejection device as set forth in claim 11, wherein the monitoring gear engages that gear that is connected to the ejector. ### Claim 13 (depends on 1) An ejection device as set forth in claim 1, wherein the force storage means includes at least one spring which is preferably a coil spring. ### Claim 14 (depends on 1) An ejection device as set forth in claim 1, wherein the force storage means includes a fluid pressure storage means or a magnet. ### Claim 15 (depends on 1) An ejection device as set forth in claim 1, wherein unloading of the force storage means is effected after attainment of the second position of the ejector by removal of the force actuation acting against the loaded force storage means. ### Claim 16 (depends on 15) An ejection device as set forth in claim 15, wherein removal of the force actuation is effected by moving the movable furniture part away from the ejector whereby the force storage means moves the ejector into the third position. ### Claim 17 (depends on 1) An article of furniture having a movable furniture part wherein the article of furniture has an ejection device as set forth in claim 1, by which the movable furniture part can be ejected.