Fastening element for fixating two components at each other

Abstract

A fastening element for fastening a first component at a second component, the fastening element including a shaft which includes at least one spring elastic support element which anchors the fastening element at the second component; a shaft head which has a larger diameter than the shaft and which is arranged at a first end of the shaft; and a clamping element which clamps the first component against the second component with a defined contact pressure, wherein the first component is a circuit board which is fitted with LEDs and includes a first pass through opening and the second component is a lamp element which includes a recess which is configured as a dead hole or a second pass through opening.

What is claimed is: 
     
         1 . A fastening element for fastening a first component at a second component, the fastening element comprising:
 a shaft which includes at least one spring elastic support element which anchors the fastening element at the second component;   a shaft head which has a larger diameter than the shaft and which is arranged at a first end of the shaft; and   a clamping element which clamps the first component against the second component with a defined contact pressure,   wherein the first component is a circuit board which is fitted with LEDs and includes a first pass through opening and the second component is a lamp element which includes a recess which is configured as a dead hole or a second pass through opening,   wherein the clamping element is formed by a spring elastic clamping arm which is displaceable in a spring elastic manner and which forms a portion of the shaft head and which contacts a surface of the first component,   wherein the shaft is formed by three arms that are integrally made from one piece of material,   wherein the shaft head is formed by three lobes, wherein each of the three lobes respectively forms a portion of one respective arm of the three arms,   wherein the three arms are formed by two crimps in a stamped blank along two deformation lines and the three lobes are provided by two incisions along the two deformation lines, wherein a length of the two incisions exceeds a length of the three lobes,   wherein the three lobes are formed respectively by crimps along a respective deformation line that is oriented transversal to a longitudinal axis of the shaft, and   wherein the two incisions separate arm sections of the three arms in a portion of the shaft from each other, wherein the arm sections are displaceable in a spring elastic manner relative to the longitudinal axis of the shaft.   
     
     
         2 . The fastening element according to  claim 1 ,
 wherein the clamping arm forms a portion of the shaft head and is sloped downward from the longitudinal axis of the shaft towards a surface of the first component, and   wherein the clamping arm is forced into a movement that builds up a spring reset force through contacting the surface of the first component when the fastening element is inserted into the recess.   
     
     
         3 . The fastening element according to  claim 1 , wherein the at least two of the three arms differ in length and a free end of a first longer arm oriented away from the shaft head forms a support element configured as a spring arm. 
     
     
         4 . The fastening element according to  claim 3 , wherein the free end of the first longer arm is crimped transversal to or opposite to an insertion direction of the shaft. 
     
     
         5 . The fastening element according to  claim 3 , wherein a free end of a second shorter arm oriented away from the shaft head forms a contact surface for the spring arm of the first longer arm.