US 11,890,256 B2
Active rollator
Ming-Ru Syue, New Taipei (TW); Cheng-Hsing Liu, New Taipei (TW); and Jia-Hung Lee, New Taipei (TW)
Assigned to WISTRON CORPORATION, New Taipei (TW)
Filed by Wistron Corporation, New Taipei (TW)
Filed on Nov. 19, 2020, as Appl. No. 16/952,188.
Claims priority of application No. 109133726 (TW), filed on Sep. 28, 2020.
Prior Publication US 2022/0096311 A1, Mar. 31, 2022
Int. Cl. A61H 3/04 (2006.01)
CPC A61H 3/04 (2013.01) [A61H 2003/043 (2013.01); A61H 2003/046 (2013.01); A61H 2201/1215 (2013.01); A61H 2201/5064 (2013.01); A61H 2201/5069 (2013.01); A61H 2201/5079 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An active rollator, comprising:
an auxiliary frame, comprising a body and a bottom portion;
a driving assembly, disposed at the bottom portion and configured to make the auxiliary frame have a motion;
a sensing assembly, disposed at the body and configured to sense an operation area and output a sensing signal; and
a controller, configured to, according to the sensing signal and a sensing threshold, control the driving assembly to make the auxiliary frame have the motion corresponding to the sensing signal; wherein the sensing assembly comprises two distance sensors, the sensing threshold comprises a body distance area and a middle area, the middle area is in the body distance area, each distance sensor is configured to sense the operation area and output a distance signal, the distance sensors sense substantially different parts of the operation area; when the distance signals fall in the middle area, the controller controls the driving assembly to drive the auxiliary frame to move in a traveling direction; and when the distance signals fall in the body distance area, the controller controls the driving assembly to maintain the movement of the auxiliary frame.