Cutting saw and control method of the cutting saw

Patent metadata

Field	Value
Publication number	US-2025073793-A1
Application number	US-202418926459-A
Country	US
Kind code	A1
Filing date	Oct 25, 2024
Priority date	Apr 27, 2022
Publication date	Mar 6, 2025
Grant date	—

Abstract

A cutting saw includes a housing, a cutting part, a driving part, a power supplying part, a lighting part and a control board. The control board is electrically connected with the power supplying part, the driving part and the lighting part respectively. An operating panel is installed on the housing. The operating panel is provided with a power supply switch, a lighting switch and an alarm light. The power supply switch, the lighting switch, and the alarm light are electrically connected with the control board. When the power supply switch is activated, a light of the power supply switch lights up. If the control board of the cutting saw does not receive any control signal input within a first time threshold, the light starts to flash. If there is still no control signal input within a second time threshold after flashing, the power supply switch enters an inactivated state.

First claim

What is claimed is:

1 . A cutting saw, comprising:
a cutting part; a driving part, the driving part supplying power to the cutting part; a power supplying part, the power supplying part supplying power to the cutting saw; a lighting part, the lighting part providing light for the cutting saw; a control board, the control board electrically connected with the power supplying part, the driving part and the lighting part respectively; and a housing, the housing provided with an operating panel, the operating panel provided with:
a power supply switch, the power supply switch electrically connected with the control board and controlling a switch of the power supplying part,
a lighting switch, the lighting switch electrically connected with the control board and controlling an on-off of the lighting part, and
an alarm light, the alarm light electrically connected with the control board and receiving a corresponding alarm signal from the control board to give an alarm;
wherein, when the power supply switch is activated, a light of the power supply switch lights up, if the control board of the cutting saw does not receive a control signal input within a first time threshold, the light of the power supply switch starts to flash, and if there is still no control signal input within a second time threshold after flashing, the power supply switch enters an inactivated state and the light of the power supply switch is turned off.

2 . The cutting saw according to claim 1 , wherein, the power supply switch and the lighting switch are arranged at touchable positions of fingers during a cutting operation.

3 . The cutting saw according to claim 1 , wherein, the housing is provided with a battery cavity to install the power supplying part, a first handle is arranged on a side of the battery cavity away from the cutting part, the operating panel is arranged on an outer surface of the housing between the first handle and the battery cavity, and the operating panel is recessed into the outer surface of the housing by 0 mm to 2 mm.

4 . The cutting saw according to claim 1 , wherein, surfaces of the power supply switch and the lighting switch protrude from a surface of the operating panel, and the surfaces of the power supply switch and the lighting switch are lower than the housing surrounding the operating panel.

5 . The cutting saw according to claim 1 , wherein, the operating panel further comprises a wiring part and a plug-in connector, the plug-in connector is electrically connected to the power supply switch, the lighting switch, and the alarm light through the wiring part, and the power supplying part, the driving part, the lighting part, and the control board are electrically connected with the plug-in connector through other wires.

6 . The cutting saw according to claim 1 , wherein, the power supply switch is centrally arranged on the operating panel and close to a direction of fingers during a cutting operation, and the lighting switch and the alarm light are located on two sides of the power supply switch.

7 . The cutting saw according to claim 1 , wherein, the lighting switch is provided with a lighting switch light capable of reflecting a state of the lighting switch, when the lighting switch is in an activated mode, the lighting switch light is white, and when the power supply switch is in an inactivated mode, the lighting switch light is off.

8 . The cutting saw according to claim 1 , further comprising a speed regulation switch, the speed regulation switch electrically connected with the control board and configured to control a rotating speed of a motor in the driving part.

9 . The cutting saw according to claim 1 , wherein, the lighting part comprises an LED driving board and an LED light board, the LED driving board is electrically connected with the control board, and the LED light board is electrically connected with the LED driving board.

10 . The cutting saw according to claim 1 , further comprising a charger plugging base, wherein, the power supplying part is electrically connected with the control board, and the control board is electrically connected with the charger plugging base.

11 . The cutting saw according to claim 1 , further comprising a shaft sleeve, sleeved on an output shaft of the driving part, wherein the shaft sleeve is provided with shaft surfaces of different diameters, and the shaft surfaces are arranged on two sides of a center plane of the shaft sleeve and are installed in cooperation with the cutting part.

12 . The cutting saw according to claim 1 , wherein, a first shaft shoulder is further arranged on the shaft sleeve, the shaft surface comprises a first shaft surface and a second shaft surface, the first shaft surface and the second shaft surface are arranged on two sides of the first shaft shoulder, an outer diameter of the first shaft shoulder is larger than diameters of the first shaft surface and the second shaft surface, and the diameter of the first shaft surface is larger than the diameter of the second shaft surface.

13 . A control method of a cutting saw, comprising:
activating a power supply switch and turning on a light of the power supply switch; the light of the power supply switch starting to flash if a control board of the cutting saw does not receive any control signal input within a first time threshold; the power supply switch entering an inactivated state if there is still no control signal input within a second time threshold after flashing, and turning off the power supply switch.

14 . The control method according to claim 13 , wherein, when the power supply switch is in an activated mode, the light of the power supply switch is green, and when the power supply switch is in an inactivated mode, the light of the power supply switch is turned off or displayed in other colors.

15 . The control method according to claim 13 , wherein, when a fault occurs during operation of the cutting saw, flashing times and/or colors of an alarm light are controlled to indicate a type of the corresponding fault.

Assignees

• Greenworks Jiangsu Co Ltd

Inventors

• Zhang Lingao
• Feng Qiuping
• Huo Xiaohui

Classifications

• B23D47/00

  Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts (constructional features of these parts per se B23Q; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title

• B23D61/02

  Circular saw blades · CPC title

• B23D59/00

  Accessories specially designed for sawing machines or sawing devices (lubricating or cooling machine tools in general B23Q11/12) · CPC title

• B23D47/12 Primary

  of drives for circular saw blades · CPC title

• B23D45/16

  Hand-held sawing devices with circular saw blades · CPC title