Riding lawn mower and operating apparatus with position detection for the same

Patent metadata

Field	Value
Publication number	US-11812688-B2
Application number	US-202117241358-A
Country	US
Kind code	B2
Filing date	Apr 27, 2021
Priority date	Mar 28, 2018
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

A riding lawn mower includes a chassis, a power output assembly, a walking assembly, a power supply device, a control module, and an operating apparatus. The operating apparatus includes at least one bracket, an operating lap bar assembly, a pivoting assembly, and a position detecting module. The pivoting assembly mounts the operating lap bar of the operating lap bar assembly on the bracket. The operating lap bar can rotate around different positions in a first direction F1 and/or a second direction F2. The position detecting module includes a magnetic element and a magnetic sensor. The magnetic element is provided on the pivoting assembly or the bracket and the magnet sensor is spaced from the magnetic element so that the magnetic element and the magnetic sensor can generate a relative movement for detecting the position of the operating lap bar in the first direction F1 and/or the second direction F2.

First claim

What is claimed is:

1. A riding lawn mower, comprising:
a chassis;
a power output assembly comprising a blade and a first motor for driving the blade;
a walking assembly comprising wheels and a second motor for driving the wheels;
a control module for controlling the riding lawn mower; and
an operating apparatus operable to set a target state of the riding lawn mower;
wherein the operating apparatus comprises at least one bracket mounted on the chassis, an operating lap bar assembly comprising an operating lap bar configured to rotate about a first axis in a first direction and rotate about a second axis in a second first direction, a pivoting assembly for pivotally mounting the operating lap bar on the at least one bracket such that the operating lap bar rotates about the first axis and rotates about the second axis, and a position detecting module electrically connected to the control module;
wherein the position detecting module comprises a magnetic element and a magnet sensor spaced from the magnet element, the magnet sensor and the magnet element are adapted to detect a relative movement of the operating lap bar, and the magnet sensor is adapted to output a first detection signal related to the position of the operating lap bar in the first direction to the control module when the operating lap bar is rotated about the first axis in the first direction and to output a second detection signal related to the position of the operating lap bar in the second direction to the control module when the operating lap bar is rotated about the second axis in the second direction; and
wherein the control module controls the target state of the riding lawn mower according to the first detection signal and the second detection signal.

2. The riding lawn mower of claim 1 , wherein one of the magnet sensor and the magnet element is fixed relative to the operating lap bar and the other of the magnet sensor and the magnet element is fixed relative to the at least one bracket.

3. The riding lawn mower of claim 2 , wherein the magnet sensor is a Hall sensor.

4. The riding lawn mower of claim 3 , wherein the at least one bracket is provided with a mounting portion for mounting a PCB board and the Hall sensor is mounted to the PCB board.

5. The riding lawn mower of claim 3 , wherein the pivoting assembly comprises a first pivoting module installed on the at least one bracket and a second pivoting module installed on the first pivoting module.

6. The riding lawn mower of claim 2 , wherein the magnet sensor comprises a first Hall sensor and a second Hall sensor which are provided at different positions.

7. The riding lawn mower of claim 1 , wherein the magnetic sensor is a Hall sensor.

8. The riding lawn mower of claim 7 , wherein the bracket is provided with a mounting portion for mounting a PCB board and the Hall sensor is mounted to the PCB board.

9. The riding lawn mower of claim 7 , wherein the pivoting assembly comprises a first pivoting module installed on the bracket and a second pivoting module installed on the first pivoting module.

10. A riding lawn mower, comprising:
a chassis;
a power output assembly comprising a blade and a first motor for driving the blade;
a walking assembly comprising wheels and a second motor for driving the wheels;
a control module for controlling the riding lawn mower;
a bracket mounted on the chassis;
an operating lap bar configured to rotate between a forward position, an intermediate position, and a rear position;
a pivoting assembly for pivotally mounting the operating lap bar on the bracket such that the operating lap bar rotates between the forward position, the intermediate position, and the rear position; and
a position detecting module for detecting a position of the operating lap bar;
wherein the position detecting module comprises a magnetic element and a magnet sensor spaced from the magnet element such that the magnet sensor and the magnet element detect a relative movement of the operating lap bar when the operating lap bar rotates between the forward position, the intermediate position, and the rear position, and the magnetic sensor outputs a detection signal for use by the control module related to the position of the operating lap bar when the operating lap bar is rotated between the forward position, the intermediate position, and the rear position.

11. The riding lawn mower of claim 10 , wherein the magnetic sensor is a magnetoresistive sensor.

12. The riding lawn mower of claim 10 , wherein the magnet sensor comprises a first Hall sensor and a second Hall sensor which are provided at different positions.

13. A riding lawn mower, comprising:
a chassis;
a power output assembly comprising a blade and a first motor for driving the blade;
a walking assembly comprising wheels and a second motor for driving the wheels;
a control module for controlling the riding lawn mower;
a bracket mounted on the chassis;
an operating lap bar configured to rotate about a first axis in a first direction and a second axis in a second direction;
a pivoting assembly for pivotally mounting the operating lap bar on the bracket such that the operating lap bar rotates about the first axis in the first direction and the second axis in the second direction; and
a position detecting module comprising a position detecting sensor for detecting positions of the operating lap bar in the first direction and the second direction;
wherein the position detecting module is electrically connected to the control module, and the control module controls the riding lawn mower according to the positions of the operating lap bar.

14. The riding lawn mower of claim 13 , wherein the position detecting sensor comprises a magnetic element and a magnetic sensor and the magnetic element and the magnetic sensor are spaced apart.

15. The riding lawn mower of claim 14 , wherein the magnet element is associated with the pivoting assembly or the operating lap bar and the magnet sensor is fixedly coupled to the bracket.

16. The riding lawn mower of claim 14 , wherein the magnetic sensor is a Hall sensor.

17. The riding lawn mower of claim 16 , wherein the bracket is provided with a mounting portion for mounting a PCB board and the Hall sensor is mounted to the PCB board.

18. The riding lawn mower of claim 16 , wherein the pivoting assembly comprises a first pivoting module installed on the bracket and a second pivoting module installed on the first pivoting module.

19. The riding lawn mower of claim 14 , wherein the magnet sensor comprises a first Hall sensor and a second Hall sensor which are provided at different positions.

20. The riding lawn mower of claim 13 , wherein the position detecting module outputs a first detection signal related to the position of the operating lap bar in the first direction to the control module when the operating lap bar is rotated about the first axis in the first direction and outputs a second detection signal related to the position of the operating lap bar in the second direction to the control module when the operating lap bar is rotated about the second axis in the second direction.

Assignees

• Nanjing Chervon Ind Co Ltd

Inventors

• Yang Dezhong
• Cai Jicun
• Dai Xiubo
• Wang Zhen
• Yamaoka toshinari
• Meng Dingming

Classifications

• A01D34/006 Primary

  Control or measuring arrangements · CPC title

• A01D34/64

  mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle (A01D34/695 takes precedence) · CPC title

• A01D34/69

  with motor driven wheels · CPC title

• A01D69/02

  electric · CPC title

• G01D5/06

  acting through a wall or enclosure, e.g. by bellows, by magnetic coupling · CPC title