Drive assembly and vehicle

Patent metadata

Field	Value
Publication number	US-11247749-B2
Application number	US-201716329605-A
Country	US
Kind code	B2
Filing date	Jul 14, 2017
Priority date	Sep 1, 2016
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A drive assemblage is described for a vehicle drivable by muscle energy and/or—in particular additionally—by motor energy, to an electric bicycle, e-bike, or pedelec, having: a crank spindle rotatable around a rotation axis for receiving a first torque that is generated in particular by muscle energy; and a transfer device that is embodied to transfer the first torque from the crank spindle to an output drive element couplable to a drive wheel of the vehicle, and is embodied, by way of an—in particular automatically—shiftable spur gear transmission, for a variable conversion ratio, in which: the spur gear transmission has a first shiftable spur gear transmission and a second shiftable spur gear transmission separate therefrom; the first shiftable spur gear transmission and the second shiftable spur gear transmission have a common transmission output to the couplable output drive element; and the first shiftable spur gear transmission and the second shiftable spur gear transmission are couplable alternatingly and alternatively into the power and torque flow of the transfer device.

First claim

What is claimed is:

1. A drive assemblage for a vehicle drivable by at least one of muscle energy and motor energy, comprising:
a crank spindle rotatable around a rotation axis and for receiving a first torque; and
a transfer device for transferring the first torque from the crank spindle to an output drive element couplable to a drive wheel of the vehicle, the transfer device including a shiftable spur gear transmission for a variable conversion ratio, wherein:
the spur gear transmission includes a first shiftable spur gear transmission and a second shiftable spur gear transmission separate therefrom,
the first shiftable spur gear transmission and the second shiftable spur gear transmission have a common transmission output to the couplable output drive element, and
the first shiftable spur gear transmission and the second shiftable spur gear transmission are couplable alternatingly and alternatively into a power and torque flow of the transfer device,
an electrical drive system to generate a motor torque, wherein the electrical drive system is controllably couplable to the output drive element in order to transfer the motor torque via the transfer device.

2. The driver assemblage as recited in claim 1 , wherein the vehicle includes one of an electric bicycle, an e-bike, and a pedelec.

3. The driver assemblage as recited in claim 1 , wherein the first torque is generated by muscle energy.

4. The driver assemblage as recited in claim 1 , wherein the transfer device is operated automatically.

5. The drive assemblage as recited in claim 1 , wherein:
for alternating and alternative coupling of the first shiftable spur gear transmission and the second shiftable spur gear transmission into the power and torque flow of the transfer device, a first coupling device is associated with the first shiftable spur gear transmission and a second coupling device is associated with the second shiftable spur gear transmission;
the first coupling device and the second coupling device are actuatable independently of one another and are conveyable at least into a coupled state and into a decoupled state;
when a respective one of the first coupling device and the second coupling device is in the coupled state, a respectively associated one of the first shiftable spur gear transmission and the second shiftable spur gear transmission is coupled into the power and torque flow of the transfer device; and
when the respective one of the first coupling device and the second coupling device is in the decoupled state, the respectively associated one of the first shiftable spur gear transmission and the second shiftable spur gear transmission is decoupled from the power and torque flow of the transfer device.

6. The drive assemblage as recited in claim 5 , wherein the respective one of the first coupling device and the second coupling device is disposed in the transfer device, with respect to the power and torque flow of the transfer device, one of:
on an input side and facing away from the output drive element, and
on an output side and facing toward the output drive element.

7. A drive assemblage for a vehicle drivable by at least one of muscle energy and motor energy, comprising:
a crank spindle rotatable around a rotation axis and for receiving a first torque; and
a transfer device for transferring the first torque from the crank spindle to an output drive element couplable to a drive wheel of the vehicle, the transfer device including a shiftable spur gear transmission for a variable conversion ratio, wherein:
the spur gear transmission includes a first shiftable spur gear transmission and a second shiftable spur gear transmission separate therefrom,
the first shiftable spur gear transmission and the second shiftable spur gear transmission have a common transmission output to the couplable output drive element, and
the first shiftable spur gear transmission and the second shiftable spur gear transmission are couplable alternatingly and alternatively into a power and torque flow of the transfer device,
for alternating and alternative coupling of the first shiftable spur gear transmission and the second shiftable spur gear transmission into the power and torque flow of the transfer device, a first coupling device is associated with the first shiftable spur gear transmission and a second coupling device is associated with the second shiftable spur gear transmission;
the first coupling device and the second coupling device are actuatable independently of one another and are conveyable at least into a coupled state and into a decoupled state;
when a respective one of the first coupling device and the second coupling device is in the coupled state, a respectively associated one of the first shiftable spur gear transmission and the second shiftable spur gear transmission is coupled into the power and torque flow of the transfer device; and
when the respective one of the first coupling device and the second coupling device is in the decoupled state, the respectively associated one of the first shiftable spur gear transmission and the second shiftable spur gear transmission is decoupled from the power and torque flow of the transfer device,

wherein the respective one of the first coupling device and the second coupling device includes:
one of a planetary gearset and a part of the planetary gearset, and
is configured for one of:
immobilizing a sun gear of a respective one of the planetary gearset and the part of the planetary gearset nonrotatably with respect to a housing of the drive assemblage for power and torque transfer, in accordance with a coupled state of the respective one of the first coupling device and the second coupling device, and
releasing the one of the planetary gearset and the part of the planetary gearset for free co-rotation with no power and torque transfer, in accordance with a decoupled state of the respective one of the first coupling device and the second coupling device.

8. The drive assemblage as recited in claim 7 , wherein:
the respective one of the first coupling device and the second coupling device includes, for controlled immobilization and release of the sun gear, an entrainer element coupled nonrotatably to the sun gear, and
the entrainer element is at least one one of:
disposed at least one of radially and axially outside the coupled sun gear, and
disposed respectively on, or as a radially external or outermost portion of, a shifting finger coupled nonrotatably to the respective sun gear.

9. The drive assemblage as recited in claim 8 , wherein immobilization and release of the sun gear is executable by way of a positioning drive radially spaced away with respect to at least one of the rotation axis of the crank spindle and the sun gear and positionable in controlled axially parallel fashion, having a plurality of stop elements for immobilizing and releasing the entrainer elements.

10. The drive assemblage as recited in claim 9 , wherein the positioning drive is a shift gate.

11. A drive assemblage for a vehicle drivable by at least one of muscle energy and motor energy, comprising:
a crank spindle rotatable around a rotation axis and for receiving a first torque; and
a transfer device for transferring the first torque from the crank spindle to an output drive element couplable to a drive wheel of the vehicle, the transfer device including a shiftable spur gear transmission for a variable conversion ratio, wherein:
the spur gear transmission includes a first shiftable spur gear transmission and a second shiftable spur gear transmission separate therefrom,
the first shiftable spur gear transmission and the second shiftable spur gear transmission have a common t

Assignees

• Bosch Gmbh Robert

Inventors

• Hinterkausen Markus
• Kimmich Peter

Classifications

• B62M11/06

  with spur gear wheels (B62M11/14 takes precedence) · CPC title

• B62M6/55 Primary

  power-driven at crank shafts parts · CPC title

• B62M11/18

  with a plurality of planetary gear units · CPC title

• B62M11/145

  built in, or adjacent to, the bottom bracket · CPC title

• F16H37/065

  with a plurality of driving or driven shafts (F16H37/0806 takes precedence) · CPC title