Driving device

• US 8,601,891 B2
• Filed: 12/02/2011
• Issued: 12/10/2013
• Est. Priority Date: 12/03/2010
• Status: Active Grant

• Current Assignee: Stabilus GmbH (Stabilus S.A.)
• Original Assignee: Stabilus GmbH (Stabilus S.A.)
• Inventors: Bochen, Marian, Knopp, Michael
• Primary Examiner(s): FENSTERMACHER, DAVID MORGAN
• Application Number:
  US13/310,188
• Publication Number:
  US 20120137803A1
• Time in Patent Office: 739 Days
• Field of Search: 74/89, 74/893.7, 74/892.3, 744/245, 744/247.1, 74/893.9, 74/893.8
• US Class Current: 74/89.38
• CPC Class Codes: E05F 15/622 using screw-and-nut mechanisms
• CPC Class Codes: E05Y 2201/216 Clutches
• CPC Class Codes: E05Y 2201/236 using force or torque
• CPC Class Codes: E05Y 2201/702 Spindles; Worms
• CPC Class Codes: E05Y 2400/337 Encoder wheels
• CPC Class Codes: E05Y 2400/342 Pulse count value setting or correcting
• CPC Class Codes: E05Y 2600/458 in or on a transmission member
• CPC Class Codes: E05Y 2800/205 forming a unit
• CPC Class Codes: E05Y 2800/232 of motors and transmissions
• CPC Class Codes: E05Y 2800/238 of springs and transmissions
• CPC Class Codes: E05Y 2800/40 Physical or chemical protection
• CPC Class Codes: E05Y 2900/50 for vehicles
• CPC Class Codes: F16H 25/2015 Means specially adapted for stopping actuators in the end position; Position sensing means
• CPC Class Codes: F16H 25/2021 with means for avoiding overloading
• CPC Class Codes: Y10T 74/18648 Carriage surrounding, guided by, and primarily supported by member other than screw [e.g., linear guide, etc.]
• CPC Class Codes: Y10T 74/18688 Limit stop
• CPC Class Codes: Y10T 74/18696 including means to selectively transmit power [e.g., clutch, etc.]
• CPC Class Codes: Y10T 74/18704 Means to selectively lock or retard screw or nut

Abstract

A driving device having a housing tube connected to a stationary base part or a movable structural component part a protective tube connected to the other respective part a spindle drive which has a threaded spindle and a spindle nut arranged on the threaded spindle by which the housing tube and protective tube are movable axially relative to one another, and a rotary drive that drives the spindle drive via a clutch, a rotationally rigid interconnection thereof can be canceled when a determined torque is exceeded. A magnetic ring having a plurality of north and south poles is rotationally arranged near a stationary sensor element. The magnetic ring is arranged at the clutch that is connected to the threaded spindle, fixed with respect to rotation relative to it.

Claims

1. A driving device comprising:

a housing tube connectable to one of a stationary base part and a movable structural component part;

a protective tube connectable to the other of the stationary base part and the movable structural component part;

a spindle drive by which the housing tube and protective tube are movable axially relative to one another, comprising;

a threaded spindle; and

a spindle nut arranged on the threaded spindle;

a rotary drive that drives the spindle drive in rotation via an overload protection device, a rotationally rigid interconnection of the overload protection device configured to be canceled when a determined torque is exceeded;

a sensor element arranged so as to be stationary with respect to the housing tube; and

a magnetic ring having a plurality of north poles and south poles arranged to be rotationally movable near the sensor element, the magnetic ring cooperating with the sensor element,

wherein the magnetic ring is arranged at a part of the overload protection device that is connected to the threaded spindle to be fixed with respect to rotation relative to the threaded spindle.

2. The driving device according to claim 1, wherein the sensor element is arranged at the inner wall of the housing of the clutch device.

3. The driving device according to claim 1, wherein the stationary base part is a vehicle body.

4. The driving device according to claim 1, wherein the movable structural component part is one of a vehicle hatch and a vehicle door.

5. The driving device according to claim 1, wherein the overload protection device is a clutch device.

6. The driving device according to claim 1, wherein the sensor element is a Hall effect sensor.

7. The driving device according to claim 1, wherein the sensor element is a plurality of Hall effect sensors.