Damping device for movable furniture parts

• US 8,991,010 B2
• Filed: 02/20/2014
• Issued: 03/31/2015
• Est. Priority Date: 08/31/2011
• Status: Active Grant

• Current Assignee: Julius BLUM GmbH (BLUM Verwaltung GmbH)
• Original Assignee: Julius BLUM GmbH (BLUM Verwaltung GmbH)
• Inventors: Brunnmayr, Harald
• Primary Examiner(s): DELISLE, ROBERTA S
• Application Number:
  US14/184,910
• Publication Number:
  US 20140165333A1
• Time in Patent Office: 404 Days
• Field of Search: 16/72, 16/85, 163/19, 163/21, 163/22, 163/35, 16D/IG.10
• US Class Current: 16/319
• CPC Class Codes: E05F 3/04 with liquid piston brakes rotary type E05F3/14
• CPC Class Codes: E05F 3/10 with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
• CPC Class Codes: E05F 3/20 in hinges
• CPC Class Codes: E05F 5/006 for hinges having a cup-shaped fixing part, e.g. for attachment to cabinets or furniture
• CPC Class Codes: E05F 5/02 specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
• CPC Class Codes: E05Y 2201/21 Brakes
• CPC Class Codes: E05Y 2201/214 Disengaging means
• CPC Class Codes: E05Y 2201/22 Locks
• CPC Class Codes: E05Y 2201/254 Fluid or viscous friction
• CPC Class Codes: E05Y 2201/264 linear
• CPC Class Codes: E05Y 2900/20 for furnitures, e.g. cabinets
• CPC Class Codes: F16F 13/007 the damper being a fluid damper
• CPC Class Codes: F16F 9/08 where gas is in a chamber with a flexible wall pressurised fluid system accumulators per se F15B1/04

Abstract

A damping device for movable furniture part, includes a damper housing, a fluid chamber which is arranged in the damper housing and in which a piston is movably mounted, a tappet which is connected to the piston, at least one seal being arranged between the damper housing and the tappet in order to seal the fluid chamber, wherein the tappet passes through the seal, a compensating chamber which is fluidically connected to the fluid chamber, which runs laterally parallel to the fluid chamber. At least one deformable compensating body is arranged in the compensating chamber in order to compensate for a volume change due to the tappet being immersed into the fluid chamber. The deformable compensating body and the at least one seal are designed together as a single piece.

Claims

1. A damping device for moveable furniture parts, comprising:

a damper housing,

a fluid chamber which is arranged in the damper housing and in which a piston is moveably supported,

a ram connected to the piston, wherein arranged between the damper housing and the ram is at least one seal for sealing off the fluid chamber, wherein the ram passes through the seal, and

a compensating chamber which is in fluid-conducting relationship with the fluid chamber and which extends laterally parallel to the fluid chamber and in which there is arranged at least one deformable compensating body for compensation for a change in volume by virtue of the ram immersing into the fluid chamber,

wherein the deformable compensating body and the at least one seal have a one-piece configuration.

2. The damping device according to claim 1, wherein the compensating body is in the form of a hollow body filled with air.

3. The damping device according to claim 1, wherein the compensating body at least partially has a substantially bag-form configuration.

4. The damping device according to claim 1, wherein in the rest position, the compensating body substantially completely fills the compensating chamber and is compressible in a damping stroke movement.

5. The damping device according to claim 1, wherein the damper housing has an opening through which air in the compensating body can flow out and through which air can flow into the compensating body in a return movement of the piston.

6. The damping device according to claim 1, wherein the fluid chamber has a first longitudinal axis and the compensating chamber has a second longitudinal axis, and the first longitudinal axis of the fluid chamber and the second longitudinal axis of the compensating chamber extend in substantially mutually parallel relationship.

7. The damping device according to claim 1, wherein a sealing body is arranged in the compensating chamber to seal off the compensating chamber, and the compensating body, the seal, and the sealing body jointly have a one-piece configuration.

8. The damping device according to claim 1, wherein arranged in the fluid chamber is a return spring by which the piston can be returned again after a damping stroke movement into a ready position provided for the next damping stroke movement.

9. The damping device according to claim 1, wherein between the piston and the inside wall of the fluid chamber is a gap, through which the damping fluid flows laterally past the piston in the damping stroke movement.

10. The damping device according to claim 1, wherein there is provided an overload prevention means, by which above a threshold value of a pressure acting on the ram, at least one overload opening between the fluid chamber and the compensating chamber is openable.

11. The damping device according to claim 1, wherein the fluid chamber and the compensating chamber are connected together by way of at least one passage, and the passage leads to the compensating chamber starting from an end region of the fluid chamber, located away from an end of the fluid chamber.

12. The damping device according to claim 11, wherein the passage opens into that end region of the compensating chamber located away from an end of the compensating chamber.

13. A furniture hinge comprising at least one damping device according to claim 1 for damping a movement of the furniture hinge.

14. The furniture hinge according to claim 13, wherein the furniture hinge has a hinge cup and a carcass-side fitment portion hingedly connected thereto for fixing to the respective furniture parts, and the damping device is mounted on or in the hinge cup.

15. The furniture hinge according to claim 14, wherein during a hinge movement, the ram of the damping device can be acted upon by the fitment portion or by an actuating element positively coupled to the hinge movement, whereby the piston can be pressed into the fluid chamber.