Plastic nut, fastening system and fastening method
AssigneeNewfrey LLC
InventorsMarkus Kumpf, Frank Rosemann
Life of this patent
Estimating the term…
Abstract
A plastic nut for multiple detachable fastening onto a stud with a thread protruding from a workpiece includes a base body with an inner surface partially defining a cylindrical recess penetrating the base body. A support surface is attached to the base body at an axial end of the plastic nut. A clamping device is attached to the plastic nut and configured to provide a clamping force between the plastic nut and the stud when the stud is installed in the cylindrical recess.
Claims12
A plastic nut (10) for multiple detachable fastening onto a stud (12) with a thread protruding from a workpiece (20), the plastic nut comprising:
- a base body (14) including an inner surface partially defining a cylindrical recess (16) penetrating the base body (14);
- a support surface (18) attached to the base body at a first axial end, the support surface including a repeating saw tooth (36) profile;
- and
- a clamping device (22), which is configured to provide a clamping force between the plastic nut (10) and the stud (12) when the stud is installed in the cylindrical recess, is attached to the base body at second axial end opposite to the first axial end and the clamping device (22) includes a radially elastic hollow cylinder section (28), which is arranged concentrically to the cylindrical recess (16), and further includes an elastic clamping nose (26), which extends radial into a cross section matching the cross section of the cylindrical recess (16).
A fastening system for connecting to a workpiece, the fastening system comprising:
- a stud (12), including a flange section (48) and a stem section (50), the stem section (50) extending axially from a first side of the flange section (48) and includes a stud thread (52), and a second side of the flange section (48) that faces away from the stem section (50) is a joining side (54) for joining the stud (12) onto the workpiece (20), and
- a plastic nut (10) including:
- a base body (14) including an inner surface partially defining a cylindrical recess (16) penetrating the base body (14);
- a support surface (18) attached to the base body at a first axial end, the support surface including a repeating saw tooth (36) profile;
- and
- a clamping device (22), which is configured to provide a clamping force between the plastic nut (10) and the stud (12) when the stud is installed in the cylindrical recess, is attached to the base body at second axial end opposite to the first axial end and the clamping device (22) includes a radially elastic hollow cylinder section (28), which is arranged concentrically to the cylindrical recess (16), and further includes an elastic clamping nose (26), which extends radial into a cross section matching the cross section of the cylindrical recess (16).
A method for fastening an object (56) partially defining a through opening (58), with respect to a stud (12) which is joined to a workpiece (20), with a fastening system, the method comprising the following steps:
- providing a fastening system for connecting to a workpiece, the fastening system comprising:
- a stud (12), including a flange section (48) and a stem section (50), the stem section (50) extending axially from a first side of the flange section (48) and including a stud thread (52), and a second side of the flange section (48) that faces away from the stem section (50) is a joining side (54) for joining the stud (12) onto the workpiece (20);
- a plastic nut (10) including:
- a base body (14) including an inner surface partially defining a cylindrical recess (16) penetrating the base body (14);
- a support surface (18) attached to the base body at a first axial end, the support surface including a repeating saw tooth (36) profile;
- and a clamping device (22), which is configured to provide a clamping force between the plastic nut (10) and the stud (12) when the stud is installed in the cylindrical recess, is attached to the base body at second axial end opposite to the first axial end and the clamping device (22) includes a radially elastic hollow cylinder section (28), which is arranged concentrically to the cylindrical recess (16), and further includes an elastic clamping nose (26), which extends radial into a cross section matching the cross section of the cylindrical recess (16);
- arranging the object (56) on the workpiece (20) with the stud (12) protruding through the opening (58);
- and
- placing the plastic nut (10) onto the stud (12) and screwing the plastic nut (10) down onto the stud until the support surface (18) of the plastic nut (10) touches an upper surface of the object (56).
Dependencies are inferred from the claim text.