Actuating drive for moving a moveable furniture part

• US 9,498,062 B2
• Filed: 07/13/2015
• Issued: 11/22/2016
• Est. Priority Date: 02/08/2013
• Status: Active Grant

• Current Assignee: Julius BLUM GmbH (BLUM Verwaltung GmbH)
• Original Assignee: Julius BLUM GmbH (BLUM Verwaltung GmbH)
• Inventors: Baldreich, Armin, Haemmerle, Kurt
• Primary Examiner(s): Ing, Matthew
• Assistant Examiner(s): GALLEGO, ANDRES F
• Application Number:
  US14/797,594
• Publication Number:
  US 20150351539A1
• Time in Patent Office: 498 Days
• US Class Current: 1/1
• CPC Class Codes: A47B 2220/0061 Accessories
• CPC Class Codes: A47B 96/00 Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture doors E06B
• CPC Class Codes: A47B 97/00 Furniture or accessories for furniture, not provided for in other groups of this subclass
• CPC Class Codes: E05D 11/1064 with a coil spring perpendicular to the pivot axis
• CPC Class Codes: E05F 1/1041 with a coil spring perpendicular to the pivot axis E05F1/1246 takes precedence
• CPC Class Codes: E05F 1/1058 for counterbalancing
• CPC Class Codes: E05F 1/1261 for counterbalancing
• CPC Class Codes: E05Y 2201/638 Cams; Ramps
• CPC Class Codes: E05Y 2600/10 Adjustable or movable
• CPC Class Codes: E05Y 2600/20 characterised by the movement transmission
• CPC Class Codes: E05Y 2900/20 for furnitures, e.g. cabinets
• CPC Class Codes: E06B 3/34 with only one kind of movement E06B3/48 takes precedence
• CPC Class Codes: E06B 5/006 for furniture E06B3/00, E06B9/115 take precedence
• CPC Class Codes: F03G 1/10 for producing output movement other than rotary, e.g. vibratory

Abstract

An actuating drive for moving a moveable furniture part includes at least one moveably mounted actuating member for moving the moveable furniture part a spring device for subjecting the actuating member to force; and an adjustment device by which a force of the spring device acting on the actuating member can be adjusted. The adjustment device has an adjustment screw having a thread, wherein the force of the spring device acting on the actuating member can be adjusted via a screw nut mounted displaceably along the thread. At least one spring element is provided via which the screw nut can be subjected, at at least one end region of the adjustment screw, to a force directed away from the end region.

Claims

1. An actuating drive for moving a moveable furniture part, comprising:

a moveably mounted actuating member for moving the moveable furniture part;

a spring device for applying a force to said actuating member;

an adjusting device for adjusting the force of said spring device acting on said actuating member, said adjusting device including;

an adjusting screw having a thread portion, a head, and a threadless portion between said thread portion and said head; and

a screw nut mounted displaceably along said adjusting screw, said threadless portion being configured to allow said screw nut to disengage from said thread portion;

wherein said adjusting device is configured to adjust the force of said spring device acting on said actuating member via movement of said screw nut along said thread portion of said adjusting screw; and

a spring element separate from said spring device, and located adjacent to said head of said adjusting screw and operative between said screw nut and said head, said spring element being configured to bear against said screw nut and apply a force of said spring element against said screw nut in a direction away from said head of said adjusting screw.

2. The actuating drive according to claim 1, wherein said actuating member is an actuating arm mounted pivotably about an axis of rotation.

3. The actuating drive according to claim 2, further comprising a control cam and a pressure roller running along said control cam and pressurized by said spring device, said control cam being interconnected to said actuating arm so as to pivot said actuating arm via the force from said spring device.

4. The actuating drive according to claim 3, wherein said control cam is on said actuating arm, said control cam being configured to provide a varying radial spacing between said spring device and said axis of rotation of said actuating arm.

5. The actuating drive according to claim 1, wherein said adjusting device further includes:

an adjustment wheel having a receiving element for receiving a tool; and

a transmission mechanism for allowing said adjustment wheel to cooperate with said adjusting screw such that said adjusting screw is rotatable by a rotary movement of said adjustment wheel implemented by the tool.

6. The actuating drive according to claim 5, wherein said adjustment wheel is mounted rotatably about an axis of rotation, the axis of rotation of said adjustment wheel extending transversely relative to a longitudinal axis of said adjusting screw.

7. The actuating drive according to claim 6, wherein the axis of rotation of said adjustment wheel extends at a right angle relative to the longitudinal axis of said adjusting screw.

8. The actuating drive according to claim 1, wherein said spring element is a leaf spring.

9. The actuating drive according to claim 8, wherein said leaf spring is pre-stressed in a bow-shaped manner.

10. The actuating drive according to claim 1, wherein said spring element is configured to apply the force of said spring element against said screw nut in a direction to engage said screw nut with said thread portion.

11. The actuating drive according to claim 1, wherein said head has an abutment surface against which said spring element is supported.

12. The actuating drive according to claim 1, wherein said spring element is formed as a component separate from said screw nut.

13. The actuating drive according to claim 1, wherein said spring device comprises at least one coil spring.

14. The actuating drive according to claim 1, further comprising a housing to be fixed to a furniture carcass, said actuating member being pivotably connected to the furniture carcass and to the moveable furniture part.

15. An article of furniture comprising:

a furniture carcass;

a flap moveable relative to said furniture carcass; and

an actuating drive according claim 1 for moveably mounting said flap to said furniture carcass.