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US 9,016,975 B2Granted
Fastening device for furniture fittings
AssigneeJulius Blum GmbH
InventorsOskar Raich, Thomas Nagel
Life of this patent
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Abstract
A fastening device for furniture fittings on furniture parts which includes at least one dowel core that can be inserted into a hole of a furniture part. The dowel core can be arranged inside a dowel sleeve, and an actuating device moves the dowel sleeve relative to the dowel core. The dowel sleeve spreads on the dowel core and the dowel core is radially resilient.
Claims24
A fastening device for furniture fittings on furniture parts, the device comprising:
- a radially resilient cylindrical dowel sleeve;
- a hollow cylindrical dowel core for being arranged inside the dowel sleeve and inserted into a drilled hole of a furniture part;
- and
- an actuating device configured to move the dowel sleeve relative to the dowel core, whereby the dowel sleeve is selectively changeable from a relaxed condition to a radially expanded condition,
- wherein the dowel core has a longitudinal slit in at least substantially an entire length of the dowel core, is made of spring steel, and is constructed such that it is radially resilient, and
- wherein the dowel sleeve and the dowel core include corresponding engagement surfaces on inner or outer annular sidewall surfaces, respectively, configured such that moving the dowel sleeve relative to the dowel core using the actuating device causes the dowel sleeve to expand on the dowel core,
- wherein the dowel sleeve and the dowel core are configured such that the engagement surface of the dowel core contacts the engagement surface of the dowel sleeve in the expanded condition and in the relaxed condition, and
- whereby relative axial movement of the dowel sleeve with respect to the dowel core, and radial resilience of the dowel core, causes a substantially even expansion of the dowel sleeve along the longitudinal extent of the dowel sleeve.
5 more elements
A fastening device for furniture fittings on furniture parts, the device comprising:
- a radially resilient cylindrical dowel sleeve;
- a hollow cylindrical dowel core for being arranged inside the dowel sleeve and inserted into a drilled hole of a furniture part;
- and
- an actuating device configured to move the dowel sleeve relative to the dowel core, whereby the dowel sleeve is selectively changeable from a relaxed condition to a radially expanded condition,
- wherein the dowel core has a longitudinal slit in at least substantially an entire length of the dowel core, is made of spring steel, and is constructed such that it is radially resilient, and
- wherein the dowel sleeve and the dowel core are configured such that moving the dowel sleeve relative to the dowel core using the actuating device causes the dowel sleeve to expand on the dowel core,
- wherein the dowel core and the dowel sleeve each include inclined inner or outer annular sidewall surfaces, respectively, that are offset in the axial direction, whereby relative movement of the dowel sleeve with respect to the dowel core causes a radially outward expansion of the dowel sleeve at axially offset locations by causing the inclined surfaces of the dowel core to engage the inclined surfaces of the dowel sleeve,
- wherein the dowel sleeve and the dowel core are configured such that they contact each other in the expanded condition and in the relaxed condition, and
- wherein the inclined surfaces of the dowel sleeve and the dowel core are arranged such that the expansion of the dowel sleeve is substantially even over the entire longitudinal extent of the dowel sleeve disposed in the drilled hole.
6 more elements
Dependencies are inferred from the claim text.