Wheel suspension and transmission gear assembly

Patent metadata

Field	Value
Publication number	US-11524538-B2
Application number	US-202117318601-A
Country	US
Kind code	B2
Filing date	May 12, 2021
Priority date	Jul 1, 2018
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A wheel suspension and transmission gear assembly may include: a main arm pivotally connectable at a connection point of the main arm to a shaft point of a wheel; a first linkage unit pivotally connected at its first end to the main arm; and a second linkage unit pivotally connected at its first end to the main arm such that at least a portion of the main arm is between the first linkage unit and the second linkage unit and such that a second end of the first linkage unit and a second end of the second linkage unit are at opposing sides of the main arm with respect to each other; wherein (i) the main arm and (ii) the first linkage unit or the second linkage unit each may include: a first gear and a second gear pivotally connected thereto and interconnected to transmit rotational motion between each other.

First claim

The invention claimed is:

1. A wheel suspension and transmission gear assembly, comprising:
a main arm pivotally connectable at a connection point of the main arm to a shaft point of a wheel;
a first linkage unit pivotally connected at its first end to the main arm; and
a second linkage unit pivotally connected at its first end to the main arm such that at least a portion of the main arm is between the first linkage unit and the second linkage unit and such that a second end of the first linkage unit and a second end of the second linkage unit are at opposing sides of the main arm with respect to each other;
wherein (i) the main arm and (ii) only the first linkage unit each comprises: a first gear and a second gear pivotally connected thereto and interconnected to transmit rotational motion between each other.

2. The assembly of claim 1 , wherein:
the first gear of the first linkage unit is couplable to an input shaft being powered by a rotational power source,
the first gear of the main arm is rotatable by the second gear of the first linkage unit,
the second gear of the main arm is couplable to an output shaft being coupled to the shaft point of the wheel; and
the first gear of the first linkage unit is a first gear in the transmission gear assembly and the second gear of the main arm is a last gear in the transmission gear assembly.

3. The assembly of claim 2 , wherein the second gear of the first linkage unit and the first gear of the main arm rotate together about a common axis.

4. The assembly of claim 1 , wherein the gears of the main arm rotate in one plane, and the gears of the first linkage unit rotate in a different plane that is substantially parallel to the plane in which the gears of the main arm rotate.

5. The assembly of claim 1 , wherein the first gear and the second gear of at least one of (i) the main arm and (ii) the first linkage unit, rotate in the same direction.

6. The assembly of claim 1 , wherein at least one of (i) the main arm and (ii) the first linkage unit comprises a drive belt or a drive chain interconnecting the respective first gear and the second gear.

7. The assembly of claim 1 , wherein at least one of (i) the main arm and (ii) the first linkage unit comprises an odd number of meshed gears to transmit rotation of the respective first gear to the respective second gear.

8. The assembly of claim 1 , further comprising a shock absorbing unit.

9. The assembly of claim 8 , wherein the shock absorbing unit is connected to at least one of the first linkage unit and the second linkage unit to cause the shock absorbing unit to alter its length in response to a change in a position of at least one of: the main arm, the first linkage unit and the second linkage unit.

10. The assembly of claim 1 , wherein the connection point of the main arm to the shaft point moves along a straight line in response to a change in a position of at least one of: the main arm, the first linkage unit and the second linkage unit.

11. The assembly of claim 1 , wherein:
the second gear of the main arm and the first gear of the first linkage unit are rotatable in the same direction;
the first gear of the first linkage unit is couplable to an input shaft being powered by a rotational power source,
the first gear of the main arm is rotatable by the second gear of the first linkage unit, and
the second gear of the main arm is couplable to an output shaft being coupled to the shaft point of the wheel.

12. The assembly of claim 1 , wherein:
the first gear of the first linkage unit is couplable to an input shaft being powered by a rotational power source,
the first gear of the main arm is rotatable by the second gear of the first linkage unit, and
the second gear of the main arm is couplable to an output shaft being coupled to the shaft point of the wheel, the second gear of the main arm being a last gear in the gears of the main arm.

13. A wheel corner module comprising:
a wheel suspension and transmission gear assembly, comprising:
a main arm pivotally connectable at a connection point of the main arm to a shaft point of a wheel;
a first linkage unit pivotally connected at its first end to the main arm; and
a second linkage unit pivotally connected at its first end to the main arm such that at least a portion of the main arm is between the first linkage unit and the second linkage unit and such that a second end of the first linkage unit and a second end of the second linkage unit are at opposing sides of the main arm with respect to each other;
wherein (i) the main arm and (ii) only the first linkage unit each comprises: a first gear and a second gear pivotally connected thereto and interconnected to transmit rotational motion between each other; and

a drivetrain unit comprising:
an input shaft coupled to the first gear of the first linkage unit or the second linkage unit;
an output shaft coupled to the second gear of the main arm and couplable to the shaft point of the wheel; and
a rotational power source coupled to the input shaft.

14. The wheel corner module of claim 13 , wherein the first gear of the main arm is rotatable by the second gear of the first linkage unit.

15. The wheel corner module of claim 14 , wherein the second gear of the first linkage unit and the first gear of the main arm rotate together about a common axis.

16. The wheel corner module of claim 13 , wherein the gears of the main arm rotate in one plane, and the gears of the first linkage unit rotate in a different plane that is substantially parallel to the plane in which the gears of the main arm rotate.

17. The wheel corner module gear of claim 13 , wherein the first gear and the second gear of at least one of (i) the main arm and (ii) the first linkage unit, rotate in the same direction.

18. The wheel corner module of claim 13 , wherein at least one of (i) the main arm and (ii) the first linkage unit comprises a drive belt or a drive chain interconnecting the respective first gear and the second gear.

19. The wheel corner module of claim 13 , wherein at least one of (i) the main arm and (ii) the first linkage unit comprises an odd number of meshed gears to transmit rotation of the respective first gear to the respective second gear.

20. The wheel corner module of claim 13 , further comprising a shock absorbing unit.

21. The wheel corner module of claim 13 , wherein the shock absorbing unit is connected to at least one of the first linkage unit and the second linkage unit to cause the shock absorbing unit to alter its length in response to a change in a position of at least one of: the main arm, the first linkage unit and the second linkage unit.

22. The wheel corner module of claim 13 , wherein the connection point of the main arm to the shaft point moves along a straight line in response to a change in a position of at least one of: the main arm, the first linkage unit and the second linkage unit.

23. The wheel corner module of claim 13 , wherein the first gear of the first linkage unit is a first gear in the transmission gear assembly and the second gear of the main arm is a last gear in the transmission gear assembly.

24. The wheel corner module of claim 13 , wherein the second gear of the main arm is a last gear in the gears of the main arm.

25. The wheel corner module of claim 13 , wherein the output shaft and the input shaft are rotatable in the same direction.

Assignees

• Ree Automotive Ltd

Inventors

• Sardes Ahishay
• Dekel Ran
• Segev Tomer
• Starik Eran
• Avigur Eylon

Classifications

• B60G3/185 Primary

  the arms being essentially parallel to the longitudinal axis of the vehicle · CPC title

• B60G2204/30

  In-wheel mountings · CPC title

• B60G3/22 Primary

  a rigid arm forming the axle housing · CPC title

• B60G2200/13

  with longitudinal arms only · CPC title

• B60G2202/12

  Wound spring · CPC title