Patent ID: 9115745
Filing Date: 2015-08-25
Classification: F16B

Abstract:
1. Securing nut comprising a base member provided around its circumference with a key face contour, a threaded bolt receptacle provided with an internal thread defining a thread pitch and passing through the base member in the direction of a central axis as well as at least one clamping element provided on the base member, the clamping element being a collar arranged on one side of the base member, the internal thread continuing in said collar, and wherein the collar extends around the threaded bolt receptacle in a closed manner in circumferential direction with respect to the central axis, wherein a step is defined along an outer periphery of the securing nut including a radially extending surface defined by the base member and an axially extending surface defined by the collar, the radially extending surface and the axially extending surface joined at a corner, wherein the radially extending surface is a continuous annular surface that spaces the collar from flats on the key face contour, and wherein at the corner of the collar and the base member a non-circular interface is formed, and wherein the collar has a varying wall thickness including a minimum wall thickness Wmin that is at the most double a penetration depth E of the thread pitch and a maximum wall thickness Wmax that is at least double the penetration depth of the thread pitch wherein the collar defines an external outermost surface and an internal surface on opposing sides of the collar, the internal surface providing for said internal thread continuing in said collar, and wherein at the minimum wall thickness Wmin, the collar defines a largest outer radius from the central axis along the external outermost surface and a largest inner radius R I from the central axis along the internal surface.