Height adjustment device and robotic mower comprising a height adjustment device
AssigneeHusqvarna AB
InventorsJörgen Johansson, Stefan Stark, Lars Ederfors
Life of this patent
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Abstract
A height adjustment device may include 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 threads of the adjustment screw, such that a rotary movement of the height adjustment screw results in a vertical linear movement of the bracket. The adjustment nut may include a first part and a second part which together enclose the adjustment screw, and the first part may be adapted to be attached to the second part. A robotic mower may include the height adjustment device.
Claims12
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.
A robotic mower comprising a chassis, wheels carrying the chassis, and a cutting arrangement suspended by the chassis, wherein the cutting arrangement is arranged in the chassis with a height adjustment device, the height adjustment device comprising:
- a height adjustment screw having outer threads and being oriented substantially vertically and arranged rotatably in relation to the 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.
Dependencies are inferred from the claim text.