US 12,385,514 B1
Wedge lock washer pair and tensioning arrangement with such wedge lock washer pair
Frank Lutter, Welver-Stocklarn (DE); and Stefan Vornweg, Werl (DE)
Assigned to Heico Befestigungstechnik GmbH, Ense-Niederense (DE)
Filed by Heico Befestigungstechnik GmbH, Ense (DE)
Filed on Nov. 11, 2024, as Appl. No. 18/943,257.
Claims priority of application No. 20 2024 100 648.8 (DE), filed on Feb. 9, 2024; and application No. 20 2024 001 799.0 (DE), filed on Sep. 19, 2024.
Int. Cl. F16B 39/24 (2006.01); F16B 39/282 (2006.01)
CPC F16B 39/24 (2013.01) [F16B 39/282 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A pair of wedge lock washers comprising:
a first wedge lock washer and a second wedge lock washer, with the first wedge lock washer having a larger outer diameter than the second wedge lock washer,
wherein the two wedge lock washers each have a fastener opening arranged in alignment with one another,
wherein the two wedge lock washers each have a first washer surface, a second washer surface opposite the first washer surface, and a radial outer side extending between the first washer surface and the second washer surface, the first washer surfaces of the two wedge lock washers being arranged facing one another,
wherein, on the first washer surfaces, the two wedge lock washers each have a wedge lock surface structure which engage one another,
wherein, on the second washer surfaces, the two wedge lock washers each have clamping structures configured for a form-fitting embossing thereof into a surface of a component adjacent thereto,
wherein the first wedge lock washer has a rotary drive contour defining the radial outer side thereof for torque support of a clamping tool, the rotary drive contour being a toothed contour with negative and positive structures, which are located beyond a radial termination of the second wedge lock washer with respect to the radial direction, whereby the first wedge lock washer functions as a reaction washer,
wherein the clamping structures of the first wedge lock washer are arranged at least in a radially outer area of the second washer surface extending in the radial direction at an axial distance from a radially inner area of the second washer surface, such that a material thickness of the first wedge lock washer including its clamping structures decreases from the radially outer area in a direction of the fastener opening,
wherein apexes of the wedge lock surface structures are arranged as positive structures on the mutually facing first washer surfaces of the two wedge lock washers in each case in a respective plane, and the planes of the first and second washer surfaces of the second wedge lock washer are arranged parallel to one another.