Suspension system, and chassis and robot with the same

Patent metadata

Field	Value
Publication number	US-10875371-B2
Application number	US-201816232059-A
Country	US
Kind code	B2
Filing date	Dec 26, 2018
Priority date	May 30, 2018
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

The present disclosure provides a suspension system, and a chassis with the same. The system includes: a fixing frame having an opening; a suspension frame disposed at the opening; and a driving wheel rotationally coupled to the suspension frame. In which, two ends of the suspension frame are respectively disposed on two ends of the fixing frame at the two sides of the opening to be selectively moved up and down along a height direction of the fixing frame, and two elastic members are respectively disposed between each of the two ends of the suspension frame and the corresponding end of the fixing frame at the two sides of the opening. In the present disclosure, the fixing frame and the suspension frame can move with respect to each other in a vertical direction, and the resetting adjustment is realized through the elastic member.

First claim

What is claimed is:

1. A suspension system, comprising:
a fixing frame having an opening;
a suspension frame disposed at the opening; and
a driving wheel rotationally coupled to the suspension frame;
wherein, two ends of the suspension frame are respectively disposed on two ends of the fixing frame at two sides of the opening to be selectively moved up and down along a height direction of the fixing frame, and two elastic members are respectively disposed between each of the two ends of the suspension frame and the corresponding end of the fixing frame at the two sides of the opening;
wherein the suspension frame comprises:
a suspension body connected to the driving wheel; and
two mounting blocks respectively disposed at two ends of the suspension body and enclosed with the suspension body to form a U-shape;
wherein each of the two ends of the fixing frame are disposed with a sliding rail, each of the sliding rails is disposed with a slider to be selectively slid along the sliding rail, and each of the mounting blocks is fixedly connected with each of the sliders.

2. The system of claim 1 , wherein a middle portion of the suspension body has a mounting portion connected to the driving wheel, and a surface of the suspension body facing the fixing frame is disposed with a plurality of reinforcing ribs, the plurality of reinforcing ribs are disposed to be diverging from two sides of the mounting portion.

3. The system of claim 2 , wherein the driving wheel is a hub motor, the mounting portion is formed with a lead hole, and a wire of the hub motor passes through the lead hole.

4. The system of claim 1 , wherein the mounting block is formed with a mounting hole, and the slider is fixedly connected to the mounting block through a fastener mounted in the mounting hole, and two limit stops for limiting the slider are respectively disposed above and below the mounting hole.

5. The system of claim 1 , wherein the fixing frame comprises a top plate having a U-shaped cross section, a bottom plate having a U-shaped cross section, and a plurality of connecting posts vertically connected between the top plate and the bottom plate, the top plate, the bottom plate and the plurality of connecting posts are enclosed to form a U-shaped structure having the opening, each of two ends of the top plate is connected to one of two ends of the bottom plate through a vertically disposed connecting block, and a sliding groove is formed at an inner side of the connecting block.

6. The system of claim 5 , wherein an inner wall of the top plate and an inner wall of the bottom plate at the two ends of the fixing frame are respectively disposed with cushions for protecting the slider.

7. The system of claim 5 , wherein an end surface of each of the mounting blocks facing the fixing frame is disposed with a first mounting post; a rear surface of each of the connecting blocks away from the suspension frame is disposed with a second mounting post; the elastic member is disposed obliquely with respect to the fixing frame and the suspension frame, one end of the elastic member is fixed on the first mounting post, and the other end of the elastic member is fixed on the second mounting post.

8. A chassis, comprising a chassis bracket, wherein under the chassis bracket is disposed with a universal wheel, and two opposite sides of the chassis bracket are respectively disposed with a suspension system comprising:
a fixing frame having an opening;
a suspension frame disposed at the opening; and
a driving wheel rotationally coupled to the suspension frame;
wherein, two ends of the suspension frame are respectively disposed on two ends of the fixing frame at two sides of the opening to be selectively moved up and down along a height direction of the fixing frame, and two elastic members are respectively disposed between each of the two ends of the suspension frame and the corresponding end of the fixing frame at the two sides of the opening;
wherein the suspension frame comprises:
a suspension body connected to the driving wheel; and
two mounting blocks respectively disposed at two ends of the suspension body and enclosed with the suspension body to form a U-shape;
wherein each of the two ends of the fixing frame are disposed with a sliding rail, each of the sliding rails is disposed with a slider to be selectively slid along the sliding rail, and each of the mounting blocks is fixedly connected with each of the sliders.

9. The chassis of claim 8 , wherein a middle portion of the suspension body has a mounting portion connected to the driving wheel, and a surface of the suspension body facing the fixing frame is disposed with a plurality of reinforcing ribs, the plurality of reinforcing ribs are disposed to be diverging from two sides of the mounting portion.

10. The chassis of claim 9 , wherein the driving wheel is a hub motor, the mounting portion is formed with a lead hole, and a wire of the hub motor passes through the lead hole.

11. The chassis of claim 8 , wherein the mounting block is formed with a mounting hole, and the slider is fixedly connected to the mounting block through a fastener mounted in the mounting hole, and two limit stops for limiting the slider are respectively disposed above and below the mounting hole.

12. The chassis of claim 8 , wherein the fixing frame comprises a top plate having a U-shaped cross section, a bottom plate having a U-shaped cross section, and a plurality of connecting posts vertically connected between the top plate and the bottom plate, the top plate, the bottom plate and the plurality of connecting posts are enclosed to form a U-shaped structure having the opening, each of two ends of the top plate is connected to one of two ends of the bottom plate through a vertically disposed connecting block, and a sliding groove is formed at an inner side of the connecting block.

13. The chassis of claim 12 , wherein an inner wall of the top plate and an inner wall of the bottom plate at the two ends of the fixing frame are respectively disposed with cushions for protecting the slider.

14. The chassis of claim 12 , wherein an end surface of each of the mounting blocks facing the fixing frame is disposed with a first mounting post; a rear surface of each of the connecting blocks away from the suspension frame is disposed with a second mounting post; the elastic member is disposed obliquely with respect to the fixing frame and the suspension frame, one end of the elastic member is fixed on the first mounting post, and the other end of the elastic member is fixed on the second mounting post.

15. A robot having a chassis, wherein the chassis comprises a chassis bracket, under the chassis bracket is disposed with a universal wheel, and two opposite sides of the chassis bracket are respectively disposed with a suspension system comprising: a fixing frame having an opening;
a suspension frame disposed at the opening; and
a driving wheel rotationally coupled to the suspension frame;
wherein, two ends of the suspension frame are respectively disposed on two ends of the fixing frame at two sides of the opening to be selectively moved up and down along a height direction of the fixing frame, and two elastic members are respectively disposed between each of the two ends of the suspension frame and the corresponding end of the fixing frame at the two sides of the opening;
wherein the suspension frame comprises:
a suspension body connected to the driving wheel; and
two mounting blocks respectively disposed at two ends of the suspension body and enclosed with the suspension body to form a U-shape;
wherein each of the two ends of

Assignees

• Ubtech Robotics Corp

Inventors

• Xiong Youjun
• Zhao Kunlei
• Yu Wenhua
• Zhou Libing
• Zhou Hailang

Classifications

• B60G2204/15

  Mounting of subframes · CPC title

• B62D57/02 Primary

  with ground-engaging propulsion means, e.g. walking members · CPC title

• B60G2300/084

  Ridable lawn mowers · CPC title

• B60G2204/45

  Stops limiting travel · CPC title

• B60G2204/4232

  Sliding mounts · CPC title