Adjustment arrangement and valve control device comprising an adjustment arrangement

Patent metadata

Field	Value
Publication number	US-10487925-B2
Application number	US-201715441301-A
Country	US
Kind code	B2
Filing date	Feb 24, 2017
Priority date	Feb 29, 2016
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

The present invention provides an adjustment arrangement ( 10 ), comprising a rotating input element ( 26 ) at which a first torque from a motor arrangement ( 18, 22 ) can be inputted into the adjustment arrangement, a rotating output element ( 16 ) at which a second torque can be outputted by the adjustment arrangement, and a transmission portion for converting the first torque into the second torque, the transmission portion comprising a transmission means ( 32 ) having a first threaded portion ( 30 ) and a second threaded portion ( 34 ), the first threaded portion converting a rotation of the input element ( 26 ) into an axial movement of the transmission means, and the second threaded portion converting an axial movement of the transmission means into a rotation of the output element ( 16 ).

First claim

The invention claimed is:

1. Adjustment arrangement, comprising
a) a rotating input element at which a first torque from a motor arrangement can be inputted into the adjustment arrangement,
b) a rotating output element at which a second torque can be outputted by the adjustment arrangement,
c) a transmission portion for converting the first torque into the second torque,
wherein the transmission portion comprises a transmission means having a first threaded portion and a second threaded portion, and
d) a housing receiving therein the input element, the motor arrangement, and the transmission means,
wherein the first threaded portion converts a rotation of the input element into an axial movement of the transmission means, and the second threaded portion converts an axial movement of the transmission means into a rotation of the output element,
wherein the first threaded portion and the second threaded portion have different thread pitches from one another,
wherein the transmission means is operably connected to the output element ( 1 ) in an axially displaceable manner so that axial movement of the transmission means is not transferred into axial movement of the output element and ( 2 ) in a rotationally engaged manner so that rotational movement of transmission means is transferred into rotational movement of the output element,
wherein the first threaded portion is in threaded engagement with an external thread formed along an axial length of the input element,
wherein the second threaded portion is in threaded engagement with a threaded element which is rotationally and axially fixed to the housing of the adjustment arrangement during normal operation.

2. Adjustment arrangement according to claim 1 , wherein the transmission means comprises a spindle nut and in that the first threaded portion and the second threaded portion are formed on different portions of the spindle nut.

3. Adjustment arrangement according to claim 1 , wherein the adjustment arrangement has a primary axis about which the input element and the output element rotate and along which the transmission means is axially displaceable.

4. Adjustment arrangement according to claim 1 , wherein the input element is rotatably driven by the motor arrangement.

5. Adjustment arrangement according to claim 4 , wherein the motor arrangement comprises a motor and a transmission, preferably a planetary transmission, an output torque of the motor being inputted into the transmission and an output torque of the transmission driving the input element.

6. Adjustment arrangement according to claim 1 , wherein an overload control means, which is set up to interrupt a rotational coupling between the output element and the motor arrangement, or at least to reduce it over a particular angle-of-rotation range, in the event of an overload, in which a torque exceeding a predetermined overload torque for the adjustment arrangement is inputted at the output element.

7. Adjustment arrangement according to claim 1 , wherein the overload control means is arranged in a torque-transmitting manner between the input element and the motor arrangement.

8. Adjustment arrangement according to claim 6 , wherein the overload control means is arranged between the output element and the input element.

9. Adjustment arrangement according to claim 6 , wherein the second threaded portion is engaged with a threaded element, the threaded element being held in a rotationally engaged manner with respect to the housing of the adjustment arrangement by the overload control means during normal operation, i.e. when a torque between the output element and the motor arrangement is less than a predetermined overload torque, and the threaded element being released for rotation relative to the housing by the overload control means in the event of overload, i.e. when the torque between the output element and the motor arrangement is greater than or equal to the predetermined overload torque.

10. Adjustment arrangement according to claim 6 , wherein the overload control means comprises an axially movable coupling element, which is shifted in an axial direction counter to a restoring force, so as to interrupt torque transmission via the coupling element, in the event of overload, i.e. when a torque between the output element and the motor arrangement is greater than or equal to the predetermined overload torque.

11. Adjustment arrangement according to claim 2 , wherein one of the two threaded portions forming an internal thread of the spindle nut and the other threaded portion forming an external thread of the spindle nut.

12. Adjustment arrangement according to claim 1 , wherein movement of the output element does not include the axial movement.

13. Adjustment arrangement, comprising
a) a rotating input element at which a first torque from a motor arrangement can be inputted into the adjustment arrangement,
b) a rotating output element at which a second torque can be outputted by the adjustment arrangement, and
c) a transmission portion for converting the first torque into the second torque,
wherein the transmission portion comprises a transmission member having a first threaded portion and a second threaded portion,
wherein the first threaded portion converts a rotation of the input element into an axial movement of the transmission member, and the second threaded portion converts an axial movement of the transmission member into a rotation of the output element,
wherein the first threaded portion and the second threaded portion have different thread pitches from one another,
wherein the transmission member is rotatably connected to the output element for transmitting torque and is axially displaceable into and out of the output member for allowing relative axial movement between the transmission member and the output element,
wherein the adjustment arrangement includes a housing in which the input element, the motor arrangement, and the transmission member are accommodated,
wherein the second threaded portion is in threaded engagement with a threaded element which is rotationally and axially fixed to the housing during normal operation.

Assignees

• Stabilus Gmbh

Inventors

• Müller Thomas
• Hillen Jörg
• Lüttchens Thordes
• Wieland Mathias
• Schuth Thomas

Classifications

• F16H25/186 Primary

  with reciprocation along the axis of oscillation · CPC title

• F16H25/04

  for conveying rotary motion · CPC title

• F16H35/10

  Arrangements or devices for absorbing overload or preventing damage by overload · CPC title

• F16H2025/2059

  Common movement by two screws or two nuts, e.g. two connected screws with opposite thread direction · CPC title

• F16H2025/2071

  Disconnecting drive source from the actuator, e.g. using clutches for release of drive connection during manual control · CPC title