Electric Truck

Patent metadata

Field	Value
Publication number	US-2022410692-A1
Application number	US-202017782484-A
Country	US
Kind code	A1
Filing date	Dec 8, 2020
Priority date	Jan 27, 2020
Publication date	Dec 29, 2022
Grant date	—

Abstract

An electric truck includes drive units being provided to each of driving wheels on left and right sides of the electric truck, each of the drive units transmitting a driving force of a motor to each of the driving wheels, a body frame casing including a pair of mounting frame bodies extending in a vehicle width direction of the electric truck and being arranged apart in a vehicle front-rear direction and a pair of cross members connecting the pair of mounting frame bodies, and body-connecting parts connecting each of a vehicle front side and a vehicle rear side of each of the drive units arranged in a frame of the body frame casing to each of the mounting frame bodies. The pair of drive units are arranged so as to be adjacent to each other in the vehicle width direction inside the frame of the body frame casing.

First claim

1 . An electric truck, comprising:
drive units being provided to each of driving wheels on left and right sides of the electric truck, each of the drive units transmitting a driving force of a motor to each of the driving wheels; a body frame casing comprising a pair of mounting frame bodies extending in a vehicle width direction of the electric truck and being arranged apart in a vehicle front-rear direction and a pair of cross members connecting the pair of mounting frame bodies; and body-connecting parts connecting each of a vehicle front side and a vehicle rear side of each of the drive units arranged in a frame of the body frame casing to each of the mounting frame bodies, wherein the pair of drive units are arranged so as to be adjacent to each other in the vehicle width direction inside the frame of the body frame casing.

2 . The electric truck according to claim 1 , wherein each of the drive units comprises the motor, a reducer that reduces a rotation speed of the motor, a final gear that is coupled to the reducer and that transfers the driving force of the motor to the driving wheel, and a drive unit housing that integrally accommodates the motor, the reducer, and the final gear.

3 . The electric truck according to claim 2 , further comprising an air suspension part disposed over the final gear in the drive unit housing.

4 . The electric truck according to claim 1 , further comprising a steering gear part provided on the driving wheel and configured to be able to steer the driving wheel, wherein
a steering shaft having a steering center of the driving wheel is disposed equidistantly from each of the pair of mounting frame bodies.

5 . The electric truck according to claim 4 , wherein the steering gear part is configured to be capable of steering the driving wheel up to 90° leftward and rightward on an assumption that a steering angle of the driving wheel under a state where the electric truck is traveling straight forward is 0°.

6 . The electric truck according to claim 4 , further comprising a pair of hinge parts disposed one to each of a vehicle front side and a vehicle rear side of the steering gear part, wherein
the pair of body-connecting parts connect the steering gear part to the mounting frame body through the pair of hinge parts.

7 . The electric truck according to claim 1 , wherein:
the electric truck is provided with double-tires constituting two of the driving wheels; and the drive units transfer the driving force to the double-tires.

Assignees

• Daimler Ag

Inventors

• Premkumar Karthikeyan
• Cakmaz Aydogan
• Thimmaiyan Pradeep Kumar
• Saxena Manish
• Suryanarayanan Karthikeyan
• Murugan Gopinath

Classifications

• B60G2200/422

  Driving wheels or live axles · CPC title

• B62D13/04

  for individually-pivoted wheels · CPC title

• B60G2204/126

  Mounting of pneumatic springs · CPC title

• B60G2204/124

  Mounting of coil springs · CPC title

• B60G2200/44

  steerable · CPC title