US 11,980,124 B2
Robotic lawn mower with sensor for detecting relative movement between body parts of the lawn mower
Stefan Stark, Huskvarna (SE); Svante Larsson, Eksjö (SE); and Staffan Palm, Hok (SE)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Appl. No. 16/972,350
Filed by HUSQVARNA AB, Huskvarna (SE)
PCT Filed Jun. 4, 2019, PCT No. PCT/SE2019/050511
§ 371(c)(1), (2) Date Dec. 4, 2020,
PCT Pub. No. WO2019/245426, PCT Pub. Date Dec. 26, 2019.
Claims priority of application No. 1850763-2 (SE), filed on Jun. 21, 2018.
Prior Publication US 2021/0235616 A1, Aug. 5, 2021
Int. Cl. A01D 34/00 (2006.01); B60R 21/0136 (2006.01); G05D 1/00 (2006.01); A01D 34/78 (2006.01); A01D 101/00 (2006.01)
CPC A01D 34/008 (2013.01) [B60R 21/0136 (2013.01); G05D 1/0227 (2013.01); A01D 34/78 (2013.01); A01D 2101/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A self-propelled robotic lawnmower comprising:
a lawnmower body,
a body part movably arranged in relation to the lawnmower body, and
an elongated sensor element extending in an interface between the lawnmower body and the body part,
wherein the elongated sensor element is configured to generate a signal when a portion of the elongated sensor element is subjected to a change in thickness, in a direction perpendicular to a direction of elongation of the elongated sensor element, by a relative movement between the body part and the lawnmower body,
wherein the lawnmower body comprises a first body portion, a second body portion, and a link arm connecting the first and second body portions, and wherein the body part is movably arranged at the link arm, and
wherein the body part is movably arranged at an underside of the link arm.