Actuator

Patent metadata

Field	Value
Publication number	US-11047591-B2
Application number	US-201916410113-A
Country	US
Kind code	B2
Filing date	May 13, 2019
Priority date	May 14, 2018
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

Various embodiments include an actuator comprising: a drive element; a transmission section; an actuating element; a mechanically active connection from the drive element to the actuating element through the transmission section; and a reset spring providing a closing force acting on the actuating element. The transmission section includes a drive gear wheel, a transmission gear wheel, and a take-off gear wheel. The transmission gear wheel includes a drive gear section and a take-off gear section. There is a first meshed engagement from the drive gear section through a first transmission function into the drive gear wheel and a second meshed engagement from the take-off gear section through a second transmission function into the take-off gear wheel. The first transmission function and the second transmission function are different. The drive gear wheel, the drive gear section, the take-off gear section, and the take-off gear wheel are arranged in one active plane.

First claim

The invention claimed is:

1. An actuator comprising:
a drive element;
a transmission section;
an actuating element;
a mechanically active connection from the drive element to the actuating element through the transmission section; and
a reset spring providing a closing force acting on the actuating element;
wherein the transmission section includes a drive gear wheel, a transmission gear wheel, and a take-off gear wheel;
wherein the transmission gear wheel includes a drive gear section and a take-off gear section;
a first meshed engagement from the drive gear section through a first transmission function into the drive gear wheel; and
a second meshed engagement from the take-off gear section through a second transmission function into the take-off gear wheel;
wherein the first transmission function and the second transmission function are different; and
wherein the drive gear wheel, the drive gear section, the take-off gear section, and the take-off gear wheel are arranged in the same active plane.

2. An actuator according to claim 1 , wherein:
the reset spring provides a rotation angle-dependent resetting force;
the drive gear section employs the first transmission function to at least partially compensate for the rotation angle dependency of the resetting force.

3. An actuator according to claim 2 , wherein the reset spring comprises a coil spring or a spiral spring.

4. An actuator according to claim 1 , wherein the transmission gear wheel includes a spacer section without teeth disposed between the drive gear section and the take-off gear section.

5. An actuator according to claim 1 , wherein the drive gear section comprises a circle sector.

6. An actuator according to claim 1 , wherein:
the drive gear section comprises a circle segment in relation to a centre point of the circle; and
an axis of rotation of the transmission gear wheel goes through the centre point of the circle.

7. An actuator according to claim 6 , wherein the take-off gear section comprises an ellipse segment in relation to an ellipse centre point; and
the ellipse centre point corresponds to the centre point of the circle.

8. An actuator according to claim 1 , wherein:
the take-off gear section comprises an ellipse segment in relation to an ellipse focal point; and
an axis of rotation of the transmission gear wheel goes through this ellipse focal point.

9. An actuator according to claim 8 , wherein:
the drive gear section comprises a circle segment in relation to a centre point of the circle; and
the centre point of the circle corresponds to the ellipse focal point.

10. An actuator according to claim 1 , wherein the take-off gear wheel includes a toothed gear section for meshing engagement into the take-off gear section of the transmission gear wheel and a non-toothed free section.

11. An actuator according to claim 1 , wherein the actuating element is formed at least partly by the take-off gear wheel.

12. An actuator according to claim 1 , wherein:
the reset spring provides a rotation angle-dependent resetting force; and
the take-off gear section employs the second transmission function to at least partially compensate for the rotation angle dependency of the resetting force.

13. An actuator according to claim 1 , wherein the take-off gear section comprises an ellipse segment.

Assignees

• Siemens Schweiz Ag

Inventors

• Konrad Hilmar

Classifications

• F16H2035/003

  Gearings comprising pulleys or toothed members of non-circular shape, e.g. elliptical gears · CPC title

• F16K31/535

  for rotating valves (F16K31/54 takes precedence) · CPC title

• F24F2013/1446

  with gearings · CPC title

• F16H27/08

  with driving toothed gears with interrupted toothing · CPC title

• F16H1/22

  with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts · CPC title