Electric wheelbarrow

Patent metadata

Field	Value
Publication number	US-2022274635-A1
Application number	US-201917776387-A
Country	US
Kind code	A1
Filing date	Nov 13, 2019
Priority date	Nov 13, 2019
Publication date	Sep 1, 2022
Grant date	—

Abstract

An electric wheelbarrow comprises a main body portion (1), a power supply device (2) installed at the main body portion (1), a power device and a control device. The power supply device (2) and the control device are respectively connected to the power device. The main body portion (1) comprises a tray (11), a main body frame (12) bearing the tray (11), and a wheel (13) installed at the main body frame (12). The power device comprises a drive device (3), a transmission device (4) and a brake device (5).

First claim

1 . An electric wheelbarrow, comprising a main body portion, and a power supply device, a power device and a control device which are installed at the main body portion, wherein the power supply device and the control device are separately connected to the power device.

2 . The electric wheelbarrow as claimed in claim 1 , wherein the main body portion comprises a tray, a main body frame for carrying the tray, and a wheel installed at the main body frame.

3 . The electric wheelbarrow as claimed in claim 1 , wherein the power device comprises a drive device, a transmission device, and a brake device.

4 . The electric wheelbarrow as claimed in claim 3 , wherein the drive device and the transmission device are disposed in the wheel, the drive device is connected to a hub assembly of the wheel, and the transmission device is connected to a rim of the wheel.

5 . The electric wheelbarrow as claimed in claim 4 , wherein the drive device comprises a hub motor installed in the wheel, and the hub motor is connected to the transmission device and the hub assembly.

6 . The electric wheelbarrow as claimed in claim 5 , wherein the hub motor comprises a stator and a rotor the stator, is connected to the hub assembly, and the rotor is connected to the transmission device.

7 . The electric wheelbarrow as claimed in claim 4 , wherein the transmission device is a gearbox.

8 . The electric wheelbarrow as claimed in claim 7 , wherein the gearbox is a planetary gearbox.

9 . The electric wheelbarrow as claimed in claim 8 , wherein the planetary gearbox comprises a sun gear, a planetary gear, a planet carrier and a ring gear, the sun gear is connected to the drive device, the sun gear meshes with the planetary gear, the planetary gear is installed at the planet carrier, the ring gear meshes with the planetary gear, and the ring gear is fixedly connected to the rim.

10 . The electric wheelbarrow as claimed in claim 1 , wherein the power supply device comprises an upper housing and a lower housing, the lower housing is fixedly installed at the main body portion, and the upper housing is detachably connected to the lower housing.

11 . The electric wheelbarrow as claimed in claim 10 , wherein a sealing ring is disposed between the lower housing and the upper housing.

12 . The electric wheelbarrow as claimed in claim 1 , wherein the control device comprises a controller for controlling the power device, and a switch device connected to the controller, and the controller and the switch device are both disposed on the main body portion.

13 . The electric wheelbarrow as claimed in claim 12 , wherein the switch device comprises a power membrane switch for controlling the on or off of a power supply of the electric wheelbarrow, a brake switch, a motor regulation switch for regulating the operation of the motor when the power supply is turned on, a direction adjustment membrane switch for controlling the electric wheelbarrow to move forward or backward, and a speed regulation membrane switch for regulating a movement speed of the electric wheelbarrow.

14 . The electric wheelbarrow as claimed in claim 13 , wherein the main body portion is provided with a handle, and the switch device is disposed on the handle.

15 . The electric wheelbarrow as claimed in claim 14 , wherein the power membrane switch is disposed on an end face of a first end of the handle, the brake switch is disposed on an inner side of the first end, the motor regulation switch is disposed on an inner side of a second end of the handle, and the direction adjustment membrane switch and the speed regulation membrane switch are disposed on an end face of the second end.

Assignees

• Techtronic Cordless Gp

Inventors

• Zhang sheng rong
• Li da zheng
• Lam Kwok Fan

Classifications

• B62B1/18 Primary

  in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows · CPC title

• B62B5/0053

  Arrangements of batteries · CPC title

• B62B5/004 Primary

  in wheels · CPC title

• B62B5/0438

  hand operated · CPC title

• B62B5/0069

  Control · CPC title