Lid stay

• US 20060279092A1
• Filed: 04/10/2004
• Published: 12/14/2006
• Est. Priority Date: 05/22/2003
• Status: Active Grant

• Current Assignee: Gmbh Huwil-Werke, Huwil Butoripari Es Uzletberendezesi Rendszerek Kft
• Original Assignee: Toplifter Beteiligungs- und Vertriebs-GmbH & Co. KG
• Inventors: Hirtsiefer, Artur
• Granted Patent: US 7,798,541 B2
• Time in Patent Office: Days
• US Class Current: 292/262
• CPC Class Codes: E05C 17/345 using friction, e.g. friction hinge
• CPC Class Codes: E05F 1/1058 for counterbalancing
• CPC Class Codes: E05Y 2900/20 for furnitures, e.g. cabinets
• CPC Class Codes: Y10S 292/19 Combined door holder and buffer
• CPC Class Codes: Y10T 292/28 Extension link
• CPC Class Codes: Y10T 292/282 Multiple

Abstract

Disclosed is a lid stay, especially for pieces of furniture, comprising a first arm (1) and a second arm (2) which are connected to each other so as to be pivotable about a swivel pin (3) between an open position and a closed position, a convex positioning contour (4) that is disposed on the first arm (1), extends around a central axis (5) located parallel to the swivel pin (3), and has the shape of a circular arc when viewed from a cross-section running perpendicular to the central axis (5), a positioning slide (8) which is movably guided along a positioning axis (9) by means of the first arm (1), is provided with a flat support area (12) facing the positioning contour (4), and is spring-biased in the direction of the positioning contour (4), and a sliding block (13), a concave first sliding surface (14) of which slidably leans on the positioning contour (4) while a flat second sliding surface (15) thereof slidably leans on the support area (12). The first sliding surface (14) extends around the central axis (5) in the shape of a circular arc and has the same curvature as the positioning contour (4).

Claims

1. Lid stay, especially for furniture, comprising

a first arm (1) and a second arm (2), which are pivotably connected to each other around a pivot axis (3) between an open position and a closed position,

a convex adjustment contour (4), which is provided on the first arm (1) and which extends around a centre axis (5) arranged parallel to the pivot axis (3) and is formed as a circular arc, when seen in a sectional view vertical to the centre axis (5),

an adjustment slider (8), which is displaceably guided by means of the first arm (1) along an adjustment axis (9) and which has a plane support face (12) directed to the adjustment contour (4) and is elastically loaded in the direction towards the adjustment contour (4),

a slide shoe (13), which is, with a concave first sliding face (14), in sliding contact with the adjustment contour (4) and which is, with a plane second sliding face (15), in sliding contact to the support face (12), wherein the first sliding face (14) extends circular arc-like around the centre axis (5) and has the same curvature as the adjustment contour (4).

2. Lid stay according to claim 1, wherein the first arm (1) has an axial projecting bead (17) extending along the adjustment contour (4) and which engages in a correspondingly formed groove (18) of the slide shoe (13), and wherein the groove (18) forms the first sliding face (14).

3. Lid stay according to one of claim 1, wherein the radial distance of the adjustment contour (4) relative to the pivot axis (3) decreases towards open position in the contact range between the slide shoe (13) and the adjustment contour (4) at least along a first part of the pivot path, starting from an intermediate position of the two arms (1, 2) relative to each other, which is arranged between the open position and the closed position.

4. Lid stay according to claim 3, wherein the radial distance of the adjustment contour (4) relative to the pivot axis (3) increases in the contact range between the slide shoe (13) and the adjustment contour (4) along a second part of the pivot path, starting from the closed position of the two arms (1, 2) relative to each other towards the intermediate position.

5. Lid stay according to claim 1, wherein the support face (12) is arranged crosswise to the adjustment axis (9), wherein the adjustment axis (9) is arranged deviating from a perpendicular line to the support face (12).

6. Lid stay according to claim 1, wherein a support bearing (26) is provided, which is held at a variable distance to the pivot axis (3), and that compression springs (10, 11) are provided, which are supported on the one hand on the adjustment slider (8) and on the other hand on the support bearing (26).

7. Lid stay according to claim 6, wherein the support bearing (26) is supported on a bearing face (30) of an abutment bearing (29), which is pivotably supported around a rotational axis (31), and wherein the bearing face (30) has in circumferential direction a variable distance to the rotational distance (31).

8. Lid stay according to claim 7, wherein the bearing face (30) is formed worm-like.

9. Lid stay according to one of claims 1 to 8, wherein the arms (1, 2) have, respectively, at a free end facing away from the pivot axis (3) connection means (35, 36) for connecting the respective arm (1, 2) with a lid or a corpus of a furniture.

10. Lid stay according to claim 6, wherein the support bearing (26) has a bore (35) extending parallel to the pivot axis (3) and which represents the connection means of the second arm (2).