Pullout guide
AssigneePaul Hettich GmbH & Co. KG
InventorWaldemar Petker
Life of this patent
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Abstract
A pullout guide comprises a stationary guide rail which can be fixed to a body, a middle rail which is movably held on the guide rail via first rolling elements arranged in a first rolling element cage, a running rail which is movably held on the middle rail via second rolling elements arranged in a second rolling element cage, and an opening on the middle rail for a support element, which, in a retracted position of the pullout guide, supports the running rail on the guide rail, the support element being mounted on the middle rail such that it can be lowered. In this case, the opening for the support element can be passed over by at least one second rolling element. This allows the support of the running rail to be optimized.
Claims6
A pullout guide (1), comprising:
- a) a stationary guide rail (4) that is configured to be fixed to a body;
- b) a middle rail (3) that is movably held on the guide rail (4) by means of first rolling elements (7), arranged in a first rolling element cage (8);
- c) a running rail (2) that is movably held on the middle rail (3) via a plurality of second rolling elements (5), arranged in a second rolling element cage (6), and movable along a an upper track of the middle rail (3), wherein
- d) an opening is provided on the middle rail (3) within the track and accommodates a support element (10), which supports the running rail (2) on the guide rail (4) in a retracted position of the pullout guide (1), the opening having a rectangular shape bounded by the track on a first longitudinal side, a second longitudinal side, a rear side and a front side, and
- e) the support element (10) is mounted on the middle rail (3) so that the support element can be lowered so as to not protrude above the middle rail (3),
- wherein at least one said second rolling element (5) is configured to pass over the opening for the support element (10) when the support element is lowered, wherein the second rolling elements (5) are formed longer in a horizontal direction perpendicular to the longitudinal direction of the middle rail (3) than the opening (11) for the support element (10) such that the at least one second rolling element (5) contacts the middle rail on both the first and second longitudinal sides of the opening within the upper track during passing over the opening,
- wherein the support element (10) is movable from a raised position in the retracted position of the pullout guide (1) to a lowered position in an extended position of the pullout guide (1),
- wherein in the raised position the support element (10) extends through the opening (11) in the middle rail (3) and in the lowered position an upper surface of the support element (10) does not protrude beyond the upper track (30) of the middle rail (3),
- wherein the guide rail (4) has an approach slope (41) that is configured for raising or lowering the support element (10),
- wherein a bearing block (13) is fixed to the middle rail (3) and supports the support element (10) in a lowerable and movable manner,
- wherein the running rail (2) has a downwardly projecting embossing (21) which, in the retracted position, rests on the support element (10),
- wherein the support element (10) is designed as a rotatably mounted support roller, and
- wherein the middle rail is formed on a horizontally aligned web, wherein the second rolling elements are at least partially movable over the opening through which the support roller passes in the raised position, so that in the extended position of the pullout guide, the second rolling elements are arranged at least partially over the opening.
Dependencies are inferred from the claim text.