Connecting element

• US 20040101382A1
• Filed: 06/02/2003
• Published: 05/27/2004
• Est. Priority Date: 07/13/2000
• Status: Active Grant

• Current Assignee: ABC Umformtechnik GmbH & Co. KG
• Original Assignee: Altenloh Brinck & Company GmbH & Company KG
• Inventors: Hofschneider, Manfred
• Granted Patent: US 7,118,317 B2
• Time in Patent Office: Days
• US Class Current: 411/402
• CPC Class Codes: B60B 3/16 by bolts or the like
• CPC Class Codes: F16B 35/06 Specially-shaped heads special shape in order to rotate the bolt F16B23/00 ; separate hook adaptors for bolts F16B43/025

Abstract

The invention relates to a fixing device consisting of a component (2) and a screw element (1) which comprises a force application (10) for a rotating tool. The component (2) and the screw element (1) co-operate with each other in a fixed state. A contact surface (11) of the screw element (1) is embodied as a convex outer surface (12) on the side thereof facing the component, and a contact surface (11) of the component (2) is embodied as a concave inner surface (16). The outer surface (12) and the inner surface (16) are arranged coaxially in relation to a common longitudinal axis (X-X) extending through the component (2) and the screw element (1). The contact surfaces (11) are defined in the axial section of the fixing device by curved sections which arc bent in such a way that the centre(s) of curvature (A; A1, A2) of the convex outer surface (12) is/are set a perpendicularly to the longitudinal axis (X-X), from the centre(s) of curvature (B; B1, B2) of the concave inner surface (16), the contact surfaces (11) being thereby fixed together by the ends of their curved sections.

Claims

1. Fastener arrangement, consisting of a component (2) and a screw element (1) with a force application area (10) for a turning tool, where the component (2) and the screw element (1)—

when they have been attached—

are in contact with each other by way of contact surfaces (11), and where the contact surface (11) of the screw element (1) on the side facing the component (2) is configured as a convexly curved outer surface (12), and the contact surface (11) of the component (2) is configured as a concavely curved inner surface (16), while the outer surface (12) and the inner surface (16) are positioned coaxially with respect to a common longitudinal axis (X-X), which extends through the component (2) and the screw element (1),

characterized in that the contact surfaces (11) in the axial section of the fastener arrangement are defined as arc sections curved in such a manner, that the center(s) of curvature (A;

A1, A2) of the convexly curved outer surface (12) is (are) spaced from the center(s) of curvature (B;

B1, B2) of the concavely curved inner surface (16) in a direction proceeding perpendicularly to the longitudinal axis (X-X) in such a manner that the contact surfaces (11) are in contact with each other between the ends of their arc sections when they are fastened.

2. Fastener arrangement according to claim 1,

characterized in that the screw element (1) is configured as a screw consisting of a screw head (4) and a threaded shaft (6) which is adjacent to it, and with a free screw tip (8), where the convexly curved outer surface (12) is located on the side of the screw head (4) facing toward the threaded shaft (6).

3. Fastener arrangement according to claim 1,

characterized in that the screw element (1) is configured as a nut and the concavely curved inner surface (16) is located on the component (2) with a threaded shaft (6) extended in the direction of the nut.

4. Fastener arrangement according to one of the claims 1 to 3,

characterized in that arc sections which define the contact surfaces (11) are configured as circular sections.

5. Fastener arrangement according to claim 4,

characterized in that the circular sections of the concavely curved inner surface (16) have a common center of curvature B, and the circular sections of the convexly curved outer surface (12) have, in the direction extending perpendicularly to the longitudinal axis (X-X), centers of curvature A1, A2 spaced from each other, where the radius belonging to the circular sections of the concavely curved inner surface (16) is longer than the radii belonging to the circular sections of the convexly curved outer surface (12).

6. Fastener arrangement according to claim 4,

characterized in that the circular sections of the convexly curved outer surface (12) have a common center of curvature A, and the circular sections of the concavely curved inner surface (16) have, in the direction extending perpendicularly to the longitudinal axis (X-X), centers of curvature (B1, B2) spaced from each other, where the radius belonging to the circular sections of the convexly curved outer surface (12) is shorter than the radii belonging to the circular sections of the concavely curved inner surface (16).

7. Fastener arrangement according to claim 4,

characterized in that the circular sections of the concavely curved inner surface (16) and the circular sections of the convexly curved outer surface (12) always have—

in the direction extending perpendicularly to the longitudinal axis (X-X)—

centers of curvature (A1, A2, B1, B2) spaced from each other, where the centers of curvature (A1, A2, B1, B2) are spaced from each other in the direction perpendicular to the longitudinal axis (X-X), and where the radii belonging to the circular sections of the inner surface (16) are longer than the radii belonging to the circular sections of the outer surface (12).

8. Fastener arrangement according to one of the claims 1 to 3,

characterized in that the arc sections which define the contact surfaces (11) are configured as elliptical sections.

9. Screw element (1) with a force application area (10) for a turning tool, and a contact surface (11) which points in the direction (E) in which the screw element (1) is screwed in, and which contact surface is configured as a convexly curved outer surface (12) for making contact with a concavely curved inner surface (16) of a component (2), where the outer surface (12) of the screw element (1) and the inner surface (16) of the component (2) are coaxial with respect to a common longitudinal axis (X-X) which extends through the component (2) and the screw element (1),

characterized in that the contact surface (11) is defined in the axial section of the screw element (1) by curved arc sections, the centers of curvatures (A1, A2) of which are at such a spacing from the longitudinal axis (X-X) that the convexly curved outer surface (12) and the concavely curved inner surface (16) of the component (2) are in contact with each other between the ends of their arc sections when they are fastened to each other.

10. Screw element according to claim 9,

characterized by its construction as a screw, consisting of a screw head (4) and a threaded shaft (6) adjacent to it with a free screw point (8), where the convexly curved outer surface (12) is located on the side of the screw head (4), which side is facing the threaded shaft (6).

11. Screw element according to claim 9,

characterized by its configuration as a threaded nut.

12. Screw element according to one of the claims (9 to 11),

characterized in that the arc sections which define the contact surfaces (11) of the convexly curved outer surface (12) and the concavely curved inner surface (16) of the component (2) are configured as circular sections.

13. Screw element according to claim 12,

characterized in that the circular sections of the concavely curved inner surface (16) have a common center of curvature (B), and the circular sections of the convexly curved outer surface (12) in the direction extending perpendicularly to the longitudinal axis (X-X) have centers of curvature (A1, A2), which are spaced apart from each other, and where the radius belonging to the circular sections of the concavely curved inner surface (16) is longer than the radii of the circular sections of the convexly curved outer surface (12).

14. Screw element according to claim 12,

characterized in that the circular sections of the convexly curved outer surface (12) have a common center of curvature (A) and the circular sections of the concavely curved inner surface (16) in the direction extending perpendicularly to the longitudinal axis (X-X) have centers of curvature (B1, B2) spaced apart from each other, where the radius belonging to the circular sections of the convexly curved outer surface (12) is shorter than the radii of the circular sections of the concavely curved inner surface (16).

15. Screw element according to claim 12,

characterized in that the circular sections of the concavely curved inner surface (16) and the circular sections of the convexly curved outer surface (12) each have in the direction extending perpendicularly to the longitudinal axis (X-X) centers of curvature (A1, A2, B1, B2), which are spaced apart from each other, and where the centers of curvature (A1, A2, B1, B2), in the direction extending perpendicularly to the longitudinal axis (X-X) are spaced apart from each other, and where the radii belonging to the inner surface (16) of the circular sections are longer than the radii belonging to the circular sections of the outer surface (12).

16. Screw element according to one of the claims 9 to 11,

characterized in that the arc sections of the convexly curved outer surface (12), defining the contact surfaces (11), and the concavely curved inner surface (16) of the component (2) are configured as elliptical sections.