Sanding tool

Patent metadata

Field	Value
Publication number	US-12145234-B2
Application number	US-202117500243-A
Country	US
Kind code	B2
Filing date	Oct 13, 2021
Priority date	Nov 12, 2020
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

A sanding tool includes a machine body, a power supply, a base plate assembly, a drive mechanism, and a control mechanism. The machine body includes a casing. The base plate assembly includes a base plate. The drive mechanism is disposed in the casing and includes a motor and an output shaft, the motor has a motor shaft rotating around a first axis, the output shaft rotates around a second axis, and the output shaft transmits power to the base plate assembly. The control mechanism is electrically connected to the motor and configured to control the sanding tool to operate. The first axis and the second axis form an included angle and are not in the same plane. A battery pack and the motor are disposed on two sides of the output shaft.

First claim

What is claimed is:

1. A sanding tool, comprising:
a machine body comprising a casing;
a battery pack disposed at a rear end of the machine body;
a base plate assembly comprising a base plate;
a drive mechanism disposed in the casing and comprising a motor, an output shaft, and a transmission assembly, wherein the motor has a motor shaft extending along and rotating around a first axis, the output shaft extends along and rotates around a second axis, the transmission assembly comprises a first gear installed on the output shaft and a second gear installed on the motor shaft and engaged with the first gear, and the output shaft transmits power to the base plate assembly through the transmission assembly to drive the base plate assembly to move; and
a control mechanism electrically connected to the motor and configured to control the sanding tool to operate,
wherein the base plate is located on and extends along a first plane;
wherein the first axis of the motor shaft is parallel with the first plane, and the second axis of the output shaft is perpendicular to the first plane such that the first axis and the second axis form an included angle,
wherein the first axis of the motor shaft is located at a staggered distance from the second axis of the output shaft, and the staggered distance extends in a lateral radial direction from the second axis to the first axis, such that the first axis and the second axis do not intersect, and
wherein the battery pack and the motor are disposed on two sides of the output shaft.

2. The sanding tool of claim 1 , wherein the battery pack comprises a coupling surface on which a battery pack terminal is disposed and the coupling surface is substantially perpendicular to the base plate and coupled to a coupling portion of the machine body.

3. The sanding tool of claim 2 , wherein the coupling surface of the battery pack is substantially parallel to the coupling portion of the machine body.

4. The sanding tool of claim 1 , wherein a second included angle between a coupling surface of the battery pack and the first plane where the base plate is located is greater than or equal to 0° and less than or equal to 120°.

5. The sanding tool of claim 1 , wherein the first axis of the motor shaft passes through the battery pack.

6. The sanding tool of claim 1 , further comprising a fan assembly, wherein the fan assembly comprises cooling fan blades configured to form a cooling air path, the cooling air path comprises a first cooling air path and a second cooling air path, the first cooling air path passes through the motor, the second cooling air path passes through the control mechanism, and the first cooling air path and the second cooling air path intersect at the cooling fan blades.

7. The sanding tool of claim 6 , wherein the casing is provided with a first air inlet, a second air inlet, and an air outlet, the air outlet is disposed on the casing proximate the cooling fan blades, the first air inlet is disposed in upstream of the motor along the first cooling air path, and the second air inlet is disposed upstream of the control mechanism along the second cooling air path.

8. The sanding tool of claim 7 , wherein the first air inlet is disposed on a front side of the casing and the second air inlet is disposed on a rear side of the casing.

9. The sanding tool of claim 1 , wherein a ratio of a height of the battery pack to a height of the sanding tool is less than or equal to 0.7.

10. The sanding tool of claim 1 , wherein the staggered distance between the first axis and the second axis is less than or equal to a radius of the first gear.

11. The sanding tool of claim 1 , wherein a first projection of the motor extending in a vertical direction perpendicular to the base plate and a second projection of the battery pack extending in the vertical direction.

12. The sanding tool of claim 1 , wherein a ratio of a diameter of the motor to a height of the sanding tool is greater than or equal to 0.2 and less than or equal to 0.6.

13. The sanding tool of claim 1 , wherein a ratio of a diameter of the motor to a height of the sanding tool is greater than or equal to 0.3 and less than or equal to 0.4.

14. The sanding tool of claim 1 , wherein a ratio of a distance between a center of the motor and the second axis of the output shaft to a length of the base plate is less than or equal to 0.5.

15. A sanding tool, comprising:
a machine body comprising a casing;
a battery pack configured to supply a power source to the sanding tool;
a base plate assembly comprising a base plate;
a drive mechanism disposed in the casing and comprising a motor and an output shaft connected by a transmission assembly, wherein the motor has a motor shaft extending along and rotating around a first axis, the output shaft extends along and rotates around a second axis, the transmission assembly comprises a first gear installed on the output shaft and a second gear installed on the motor shaft and engaged with the first gear, and the output shaft transmits power to the base plate assembly through the transmission assembly to drive the base plate assembly to move; and
a control mechanism electrically connected to the motor and configured to control the sanding tool to operate,
wherein the base plate is located on and extends along a first plane;
wherein a direction along which the battery pack is plugged in and out of a battery pack accommodating portion of the machine body is parallel to the first plane where the base plate is located,
wherein the first axis of the motor shaft is parallel with the first plane, and the second axis of the output shaft is perpendicular to the first plane such that the first axis and the second axis form an included angle,
wherein the first axis of the motor shaft is located at a staggered distance from the second axis of the output shaft, and the staggered distance extends in a lateral radial direction from the second axis to the first axis, such that the first axis and the second axis do not intersect, and
wherein a ratio of a diameter of the motor to a height of the sanding tool is greater than or equal to 0.2 and less than or equal to 0.6.

16. The sanding tool of claim 15 , wherein the ratio of the diameter of the motor to the height of the sanding tool is greater than or equal to 0.3 and less than or equal to 0.4.

17. The sanding tool of claim 15 , wherein a projection of the battery pack on the first plane where the base plate is located overlaps with the base plate.

18. A sanding tool, comprising:
a machine body comprising a casing;
a battery pack configured to supply a power source to the sanding tool;
a base plate assembly comprising a base plate;
a drive mechanism disposed in the casing and comprising a motor and an output shaft connected by a transmission assembly, wherein the motor has a motor shaft extending along and rotating around a first axis, the output shaft extends along and rotates around a second axis, the transmission assembly comprises a first gear installed on the output shaft and a second gear installed on the motor shaft and engaged with the first gear, and the output shaft transmits power to the base plate assembly through the transmission assembly to drive the base plate assembly to move; and
a control mechanism electrically connected to the motor and configured to control the sanding tool to operate,
wherein the base plate is located on and extends along a first plane;
wherein the first axis of the motor shaft is parallel with the first plane, and the second axis of the output shaft is perpe

Assignees

• Nanjing Chervon Ind Co Ltd

Inventors

• Zhang Lisong
• Xing Li

Classifications

• B24B47/12

  by mechanical gearing or electric power (B24B47/16 takes precedence) · CPC title

• B24B41/04

  Headstocks; Working-spindles; Features relating thereto · CPC title

• B24B23/028

  Angle tools · CPC title

• B24B23/04

  with oscillating grinding tools; Accessories therefor · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title