Autonomous track-type moving device

Patent metadata

Field	Value
Publication number	US-11180204-B2
Application number	US-201816171409-A
Country	US
Kind code	B2
Filing date	Oct 26, 2018
Priority date	Apr 27, 2016
Publication date	Nov 23, 2021
Grant date	Nov 23, 2021

Abstract

A track-type moving device having one or more track mechanisms. The track mechanism may include a guide wheel, a driving wheel, a track, and/or a tensioning mechanism. The tensioning mechanism may include an adjusting member and/or an elastic member. The elastic member may provide a driving force that enables the adjusting member to move.

First claim

What is claimed is:

1. A track mechanism for an autonomous moving device, comprising:
a base;
a driving wheel rotatably disposed on the base;
a guide wheel, configured to support the base together with the driving wheel and disposed movably relative to the base;
a track, wound around the driving wheel and the guide wheel, to perform rotary motion around the driving wheel and the guide wheel; and
a tensioning mechanism, including an adjusting member connected to the guide wheel configured to change a position of the guide wheel and an elastic member located between the adjusting member and the base, the elastic member provides a driving force that enables the adjusting member to move, and the adjusting member drives the guide wheel to move and tension the track
wherein the elastic member provides an elastic force that enables the adjusting member to perform swinging motion relative to the base, and when the adjusting member is moving, the adjusting member drives the guide wheel to perform swinging motion.

2. The track mechanism according to claim 1 , wherein the elastic member provides a pushing force or a pulling force that enables the adjusting member to move.

3. The track mechanism according to claim 1 , wherein when the elastic member drives the adjusting member and drives the guide wheel to move, a wheel center distance between the guide wheel and the driving wheel is increased.

4. The track mechanism according to claim 1 , wherein a bottom of the driving wheel and a bottom of the guide wheel are on a same horizontal plane.

5. The track mechanism according to claim 1 , wherein the guide wheel and the adjusting member are connected rotatably through a rotating shaft.

6. The track mechanism according to claim 1 , wherein the adjusting member is rotatably connected to the base, the guide wheel is rotatably connected to the adjusting member, and a rotating axis of the adjusting member on the base and a rotating axis of the guide wheel on the adjusting member are set eccentrically.

7. The track mechanism according to claim 1 , wherein the adjusting member includes a first support shaft rotatably supported on the base, a second support shaft rotatably supported on the guide wheel, and a connecting rod connecting the first support shaft and the second support shaft.

8. The track mechanism according to claim 7 , wherein the elastic member is a torsion spring disposed on the first support shaft, and two ends of the torsion spring bear against the connecting rod and the base respectively.

9. The track mechanism according to claim 7 , wherein the elastic member is connected between the connecting rod and the base.

10. The track mechanism according to claim 1 , wherein a motor for driving the driving wheel to rotate is further disposed on the base.

11. The track mechanism according to claim 1 , wherein the track is a series closed-loop structure formed by a plurality of rubber blocks hinged through metal pins.

12. The track mechanism for an autonomous moving device of claim 1 , wherein the device is a lawn mower.

13. The lawn mower according to claim 12 , wherein the track has a flexible material on one side in contact with a ground.

Assignees

• Positec Power Tools Suzhou Co Ltd

Inventors

• Ran Yuanzhong
• Song Kang

Classifications

• B62D55/10 Primary

  Bogies; Frames (track-tensioning means B62D55/30) · CPC title

• A01D34/835

  specially adapted for particular purposes · CPC title

• B62D55/242

  The flexible band being semi-rigid for resisting back-flexing and contributing to spring the vehicle · CPC title

• B62D55/30

  Track-tensioning means · CPC title

• B62D55/065 Primary

  Multi-track vehicles, i.e. more than two tracks {(soil-shifting machines E02F; mining machines E21C)} · CPC title