US 11,111,973 B2Granted

Drive mechanism

AssigneeStabilus GmbH

InventorsMadalina Gherman, Mihai-Augustin Vidrean, Sergei Mazepa, Magnus Hümmerich

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Abstract

A drive mechanism having a drive motor that rotatably drives a threaded spindle against a specific braking force generated by a pretensioned spring of a friction brake arrangement. The drive motor and the threaded spindle are arranged coaxially in a housing tube of the drive mechanism, and components of the friction brake arrangement are arranged in a tubular brake housing, which is arranged in an axially and rotationally fixed in the housing tube. A first end of the brake housing has one or more radially inwardly directed first stop shoulders and at a second end of the brake housing has one or more radially inwardly directed second stop shoulders. The brake housing has at its first end a radially circumferential ring with one or more radially resilient spring arms extending axially toward the second end, at the free ends of which spring arms are arranged the second stop shoulders.

Claims10

Dependent claims

A drive mechanism, comprising:

a housing tube;
a drive motor with drive shaft;
a threaded spindle rotatably drivable by the drive motor via the drive shaft, the drive motor and the threaded spindle being arranged coaxially in the housing tube;
a friction brake arrangement having a tubular brake housing axially and rotatably fixed in the housing tube, braking components, and a pretensioned spring, wherein the braking components and the pretensioned spring are arranged in the tubular brake housing, the braking components generating a braking force by the pretensioned spring that is surmounted by the drive motor to rotate the threaded spindle,
wherein the tubular brake housing has a first axial end and a second axial end, at least one radially inwardly directed first stop shoulder and a radially circumferential ring are arranged at the first axial end, at least one radially resilient spring arm extends from the circumferential ring axially toward the second axial end, and a respective second stop shoulder is arranged at each of the at least one spring arm.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/523,076Filed 26 Jul 2019
Priority: DE 10 2018 118 299.627 Jul 2018
Published: US 2020/0032865 A130 Jan 2020
Granted: 7 Sep 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16D 55/226
The braking members being brake pads: in which the common actuating member is moved axially , e.g. floating caliper disc brakes
F16H 25/20
For conveying or interconverting oscillating or reciprocating motions: screw mechanisms
F16D 65/186
Adapted for drawing members together , e.g. for disc brakes: with full-face force-applying member, e.g. annular
F16D 2121/26
Using motors: for releasing a normally applied brake

Family

US 2020/0032865 A1Pre-grant publication · published 30 Jan 2020
US 11,111,973 B2This patent

From the US filing history. Foreign family members aren’t listed.

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