Drive Assembly

Patent metadata

Field	Value
Publication number	US-2024217618-A1
Application number	US-202218558893-A
Country	US
Kind code	A1
Filing date	May 13, 2022
Priority date	May 17, 2021
Publication date	Jul 4, 2024
Grant date	—

Abstract

A drive assembly of a vehicle, in particular a vehicle which is operated using muscle power and/or a motor includes a drive unit, a frame interface, and at least one holding element. The frame interface is L-shaped and has a base and a lateral wall. The drive unit is screwed to the base of the L-shaped frame interface via a fixed bearing assembly. The holding element is screwed to the lateral wall of the L-shaped frame interface and to the drive unit via a respective floating bearing assembly in each case.

First claim

1 . A drive assembly of a vehicle which is operated using muscle power and/or a motor, comprising:
a drive unit, a frame interface, and at least one holding element, wherein the frame interface is L-shaped and has a base and a lateral wall, wherein the drive unit is fastened to the base of the L-shaped frame interface via a fixed bearing assembly, and wherein the holding element is fastened to the lateral wall of the L-shaped frame interface and to the drive unit via a respective floating bearing assembly in each case.

2 . The drive assembly according to claim 1 , wherein the base of the frame interface is arranged on an output side of the drive unit and is substantially orthogonal to a bottom bracket axle of the drive unit, and the lateral wall is arranged substantially perpendicular to the base.

3 . The drive assembly according to claim 1 , wherein the fixed bearing assembly is formed in that the base is fastened to at least one threaded bolt of a housing of the drive unit.

4 . The drive assembly according to claim 1 , wherein the floating bearing assembly is formed in that the holding element is an elastically deformable, plate-shaped element.

5 . The drive assembly according to claim 4 , wherein the holding element is a planar piece of sheet metal.

6 . The drive assembly according to 4 , wherein:
the holding element is a stepped piece of sheet metal with two planar sheet portions, and the two planar sheet portions are arranged parallel to one another with a predefined offset.

7 . The drive assembly according to claim 1 , wherein the holding element is a lid abutting an end face of the lateral wall of the frame interface.

8 . The drive assembly according to claim 7 , wherein the lid has at least one opening and, per opening, an elastomeric element and a sleeve, wherein the elastomeric element and the sleeve are arranged in the opening and are fastened to the drive unit by way of a screw such that the sleeve pushes the elastomeric element against the drive unit.

9 . The drive assembly according to claim 1 , wherein the drive assembly is configured such that, in a fully screwed state, at least one holding region of the drive unit between the holding element and the base of the frame interface is stressed by tension or pressure.

10 . The drive assembly according to claim 1 , wherein the lateral wall circumferentially completely surrounds the base.

11 . The drive assembly according to claim 1 , wherein:
the lateral wall has a recess, in particular wherein the recess extends over at least 20% of the circumference of the lateral wall, and the recess extends over a maximum of 80% of the circumference of the lateral wall.

12 . A vehicle which is operated using muscle power and/or a motor, comprising a drive assembly according to claim 1 .

13 . The vehicle according to claim 12 , further comprising a chassis, wherein:
the frame interface is an integral component of the chassis, and the frame interface is connected to a lower tube and/or to a seat tube and/or to chain struts of the chassis.

14 . The vehicle according to claim 12 , wherein the base of the frame interface is arranged on a chainring side of the drive unit.

15 . The vehicle according to claim 12 , further comprising a spring-loaded chainstay connected to the frame interface in an articulated manner by way of a hinge, wherein the hinge is integrated into the lateral wall of the frame interface.

16 . A method for producing a drive assembly of a vehicle, comprising:
arranging a drive unit at least partially in a receiving space of an L-shaped frame interface such that the drive unit abuts a base of the frame interface, providing a holding element, and screwing the holding element to a lateral wall of the frame interface and to the drive unit, wherein the holding element is screwed to the drive unit and the lateral wall such that, in a fully screwed state, at least one holding region of the drive unit between the holding element and the base of the frame interface is stressed by tension or pressure.

17 . The method according to claim 16 , further comprising:
producing the frame interface by die-casting, generating screw openings in the frame interface, and generating support points on the base of the frame interface, wherein the screw openings and the support points are generated by way of machining.

18 . The drive assembly according to claim 1 , wherein the fixed bearing assembly is formed in that the base is fastened to a threaded screw of a housing of the drive unit.

19 . The drive assembly according to claim 1 , wherein the fixed bearing assembly is formed in that the base is fastened to a threaded sleeve of a housing of the drive unit.

20 . The vehicle according to claim 12 , wherein the vehicle is an electric bicycle.

Assignees

• Bosch Gmbh Robert

Inventors

• Hassler Julien
• Mast Rainer
• Nguyen Quoc-Dat
• Bertsch Benjamin
• Binder Julian

Classifications

• B62D65/02

  Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components · CPC title

• B60K2007/0046

  the motor moving together with the vehicle body, i.e. moving independently from the wheel axle · CPC title

• B60K2007/0061

  the motor axle being parallel to the wheel axle · CPC title

• B60Y2200/13

  Bicycles; Tricycles · CPC title

• B60K1/00

  Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) · CPC title