Earth auger

Patent metadata

Field	Value
Publication number	US-12435578-B2
Application number	US-202418782023-A
Country	US
Kind code	B2
Filing date	Jul 24, 2024
Priority date	Jan 28, 2022
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

An earth auger includes a transmission assembly arranged on a connecting base, a motor assembly connected with the transmission assembly and driving the transmission assembly to rotate, a controller arranged at a first side of the transmission assembly and connected with the motor assembly, a control knob and a plurality of indicator lights arranged on a housing, and a gyroscope sensor. The controller controls a rotation of the motor assembly through an on-off of a circuit. Angular velocities and angular acceleration critical values of different gears are set through the control knob. The indicator lights are used to display a current gear, and the gyroscope sensor is arranged on a second side of the transmission assembly. The gyroscope sensor obtains angular velocity information and angular acceleration information, and feedbacks a monitored signal to the controller. When the monitored signal exceeds a preset critical value, the controller stops the motor.

First claim

What is claimed is:

1. An earth auger, comprising:
a transmission assembly, arranged on a connecting base;
a motor assembly, connected with the transmission assembly, and configured to drive the transmission assembly to rotate;
a controller, arranged at a first side of the transmission assembly, connected with the motor assembly, and configured to control a rotation of the motor assembly through an on-off of a circuit;
a control knob and a plurality of indicator lights, arranged on a housing, the control knob configured to set critical values of angular velocities of different gears and set critical values of angular accelerations of the different gears, and the indicator lights configured to display a current gear;
a gyroscope sensor, arranged at a second side of the transmission assembly,
wherein, the gyroscope sensor is configured to obtain angular velocity information and angular acceleration information during a movement of the earth auger, to feedback a monitored signal to the controller, and when the monitored signal exceeds a preset critical value of the current gear, the controller stops power supply to stop the motor from rotating; and
a bracket, installed with an anti-impact assembly, wherein, the anti-impact assembly comprises:
a blocking plate,
a plurality of fastening bolt assemblies, passing through the blocking plate and mounted with the bracket; and
a plurality of buffer components, sleeved on the fastening bolt assembly and located between the blocking plate and the bracket.

2. The earth auger according to claim 1 , wherein, a plurality of first mounting holes and a plurality of second mounting holes are arranged on the bracket, the first mounting holes are disposed coaxially with the second mounting holes, and a diameter of the first mounting holes is larger than a diameter of the second mounting holes.

3. The earth auger according to claim 2 , wherein, the anti-impact assembly further comprises a plurality of guide sleeves, the guide sleeves are arranged in the bracket from the first mounting holes, and a limit is defined between the guide sleeves and the bracket.

4. The earth auger according to claim 3 , wherein, a diameter of the guide sleeves is larger than a diameter of the second mounting holes, and is matched with a diameter of the first mounting holes.

5. The earth auger according to claim 3 , wherein, the fastening bolt assembly is configured to penetrate through the blocking plate and the guide sleeves, and connect the blocking plate and the guide sleeves to the bracket.

6. The earth auger according to claim 1 , wherein, the housing comprises a first housing and a second housing, and the controller is arranged on the first housing.

7. The earth auger according to claim 6 , wherein, tops of the first housing and the second housing form an opening.

8. The earth auger according to claim 7 , wherein, a cover is arranged on the opening.

9. The earth auger according to claim 8 , wherein, the control knob and the plurality of the indicator lights are arranged on the cover, and the control knob is connected with the controller to set the critical values of angular velocities and the critical values of angular accelerations of the different gears.

10. The earth auger according to claim 1 , wherein, the gyroscope sensor is connected with the controller and feedbacks a monitored signal of the angular velocities and a monitored signal of the angular accelerations to the controller.

11. The earth auger according to claim 1 , wherein, the indicator lights comprise a first indicator light, a second indicator light and a third indicator light, the first indicator light, the second indicator light and the third indicator light are adjusted by the control knob to display the current gear.

12. The earth auger according to claim 1 , wherein, the gyroscope sensor is configured to monitor signals of the angular velocity and the angular acceleration of the earth auger in real time, and filter noise information to obtain a real-time working state of the earth auger.

13. The earth auger according to claim 1 , wherein, the transmission assembly comprises a first transmission portion and a second transmission portion, one end of a first bearing component of the first transmission portion is provided with a connecting gear, and the first transmission portion is connected with the second transmission portion through the connecting gear.

14. The earth auger according to claim 13 , wherein, one end of a transmission shaft of the second transmission portion is provided with an drill pipe connector, and the drill pipe connector is connected with a drill bit and configured to drive the drill bit to rotate.

Assignees

• Greenworks Jiangsu Co Ltd

Inventors

• Huang Fei
• Wang Zhikun
• Xi Shangyu
• Chen Bingtan
• Yang Hexin

Classifications

• H02K9/06

  with fans or impellers driven by the machine shaft · CPC title

• H02K7/116

  with gears · CPC title

• F16H2057/02073

  Reduction gearboxes for industry · CPC title

• F16H2057/02034

  Gearboxes combined or connected with electric machines · CPC title

• F16H57/02

  Gearboxes; Mounting gearing therein · CPC title