Retraction device and method for opening and closing a movable furniture part

Patent metadata

Field	Value
Publication number	US-11547210-B2
Application number	US-201816755197-A
Country	US
Kind code	B2
Filing date	Oct 2, 2018
Priority date	Oct 11, 2017
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A retraction device for movable furniture parts has a driver movable along a first guide path, which is movable between a retracted position and a parked position and is directly or indirectly pretensioned into the retracted position by an energy storage device. The driver can be coupled to an activator in order to move the movable furniture part into a closed position. A method uses the driver for opening and closing the movable furniture part and tensioning and releasing a retraction device.

First claim

What is claimed is:

1. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the transmission gear ( 30 ) is a gear with a transmission ratio which can be varied via the movement of the opening driver ( 23 ).

2. The retraction device according to claim 1 , A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein with a constant movement of the opening driver ( 23 ) in the opening direction, the movement of the driver ( 11 ) from the retraction position to the parked position becomes slower.

3. The retraction device according to claim 2 , wherein with constant movement of the opening driver ( 23 ) in the opening direction, the movement of the driver ( 11 ) from the retracted position to the parked position is slowed down by at least 50% due to a changing transmission ratio.

4. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the second guide path ( 21 ) has a linear section and an angled section and, when the opening driver ( 23 ) is arranged on the angled section, the opening activator ( 26 ) is decoupled from the opening driver ( 23 ) and the driver ( 11 ) is arranged in the parked position.

5. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the transmission gear ( 30 ) comprises at least one cable pull ( 33 , 34 ) which is configured to be wound up along a rotatable disc ( 32 ), wherein a winding edge for the cable pull ( 33 , 34 ) is formed on the disc ( 32 ), said winding edge having a radius which varies relative to an axis of rotation of the disc.

6. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein the transmission gear ( 30 ) comprises at least one rack which runs along at least one non-circular gear, and wherein the at least one non-circular gear has teeth that are arranged along a curve which extends at a non-constant distance from an axis of rotation of the non-circular bear.

7. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy storage device, wherein the driver ( 11 ) is configured to be coupled to an activator ( 25 ) in order to move the movable furniture part ( 3 ) into a closed position, and further comprising an opening driver ( 23 ) which is movable along a second guide path ( 21 ) and is coupled to the driver ( 11 ) via a transmission gear ( 30 ), wherein the opening driver ( 23 ) is configured to be coupled to an opening activator ( 26 ) which moves the opening driver ( 23 ) along the second guide path ( 21 ) in an opening direction during an opening movement, wherein a distance traveled by the opening driver ( 23 ) is longer than a distance traveled by the driver ( 11 ), wherein during a closing movement of the movable furniture part ( 3 ), the activator ( 25 ) moves the driver ( 11 ) out of the parked position and the driver ( 11 ) moves the activator ( 25 ) into the retracted position by a force of the energy storage device.

8. A retraction device for movable furniture parts ( 3 ), comprising a driver ( 11 ) which is configured to be moved along a first guide path ( 10 ) between a retraction position and a parked position and is directly or indirectly pretensioned into the retraction position by an energy stor

Assignees

• Hettich Paul Gmbh & Co Kg

Inventors

• Stuffel Andreas
• Buhmeier Marvin

Classifications

• E05Y2201/474

  Compression springs · CPC title

• F16H19/0645

  the flexible push or pull member having guiding means, i.e. the flexible member being supported at least partially by a guide to transmit the reciprocating movement  (the flexible member being a non-buckling chain F16H19/0636) · CPC title

• E05Y2900/31

  for refrigerators · CPC title

• E05Y2201/604

  Transmission members · CPC title

• A47B88/467 Primary

  self-closing · CPC title