DAMPER FOR FURNITURE

• US 20120085607A1
• Filed: 04/16/2010
• Published: 04/12/2012
• Est. Priority Date: 04/28/2009
• Status: Active Grant

• Current Assignee: Druck- und Spritzgusswerk Hettich GmbH & Co. KG., GEA Mechanical Equipment GmbH (GEA Group AG)
• Original Assignee: Druck und Spritzgußwerk Hettich GmbH & Co. KG (Halemeier GmbH & Co. KG)
• Inventors: Weber, Konrad
• Granted Patent: US 8,668,062 B2
• Time in Patent Office: Days
• US Class Current: 188/282.1
• CPC Class Codes: E05F 5/10 with piston brakes
• CPC Class Codes: E05Y 2201/21 Brakes
• CPC Class Codes: E05Y 2201/256 with pistons or vanes
• CPC Class Codes: E05Y 2201/264 linear
• CPC Class Codes: E05Y 2900/20 for furniture, e.g. cabinets
• CPC Class Codes: F16F 9/3405 Throttling passages in or on piston body, e.g. slots F16F9/344, F16F9/3481 take precedence

Abstract

The invention relates to a damper (1, 1′) for furniture, especially hinges, comprising a housing (2, 2′) in which a piston (8, 8′) is connected to a piston rod (3, 3′) and can be displaced. A fluid flows through at least one flow channel (11, 11′) on or in the piston (8, 8′) during a movement of the piston (8, 8′) inside the housing (2, 2′), the movement of the piston (8, 8′) resulting in a different damping power in different directions. The cross-section of the flow channel can be modified in some sections on at least one groove (20, 20′) by moving a plate (12, 12′) relative to the piston (8, 8′). On the at least one groove (20, 20′), a substantially funnel-shaped outlet (22, 22′) and/or the groove (20′) have a section which is arranged at an angle to the radial direction to avoid cavitation.

Claims

1. A damper for furniture, especially for hinges, comprising a housing in which a piston connected to a piston rod is received so that it can be displaced, where a fluid flows through at least one flow channel on or in the piston during a movement of the piston inside the housing, wherein a different damping power is obtained during movement of the piston in different directions and the cross-section of the flow channel can be modified in some sections on at least one groove since a plate can be moved relative to the piston, characterised in that on the at least one groove a substantially funnel-shaped outlet and/or the groove has a section disposed at an angle to the radial direction to avoid cavitation.

2. The damper according to claim 1, characterised in that the groove has a bent section.

3. The damper according to claim 1, characterised in that the groove is configured to be wavy or spiral-shaped.

4. The damper according to claim 1, characterised in that the groove has a length of at least 5 mm.

5. The damper according to claim 1, characterised in that the funnel-shaped outlet has rounded transitions.

6. The damper according to claim 1, characterised in that the funnel-shaped outlet is disposed adjacent to an axial flow channel on the piston.