US 12,232,443 B2
Height adjustment device and robotic mower comprising a height adjustment device
Jörgen Johansson, Jönköping (SE); Stefan Stark, Huskvarna (SE); and Lars Ederfors, Benkeryd (SE)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Filed by HUSQVARNA AB, Huskvarna (SE)
Filed on Oct. 8, 2021, as Appl. No. 17/497,500.
Claims priority of application No. 2051175-4 (SE), filed on Oct. 8, 2020.
Prior Publication US 2022/0110245 A1, Apr. 14, 2022
Int. Cl. A01D 34/74 (2006.01); A01D 34/64 (2006.01); A01D 34/78 (2006.01); A01D 34/81 (2006.01); A01D 101/00 (2006.01)
CPC A01D 34/74 (2013.01) [A01D 34/64 (2013.01); A01D 34/81 (2013.01); A01D 34/78 (2013.01); A01D 2101/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A height adjustment device comprising a height adjustment screw having outer threads and being oriented substantially vertically and arranged rotatably in relation to a chassis, and an adjustment nut connected to a bracket and comprising inner threads for engagement with the outer threads of the height adjustment screw, such that a rotary movement of the height adjustment screw results in a vertical linear movement of the bracket,
wherein the adjustment nut comprises a first part and a second part which together enclose the height adjustment screw, the first part being adapted to be attached to the second part,
wherein the inner threads of the adjustment nut are located on one of the first and second parts while the other of the first and second parts is free from the inner threads engaging with the height adjustment screw, and
wherein the first part is adapted to be attached to the second part by a mutual linear movement parallel with a center axis of the height adjustment screw.