Drive device for an injection valve, and injection valve

Patent metadata

Field	Value
Publication number	US-9447760-B2
Application number	US-201113817498-A
Country	US
Kind code	B2
Filing date	Aug 16, 2011
Priority date	Aug 18, 2010
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A drive device for an injection valve may include an actuator configured for exerting a force along a first force action axis, a lever device coupled to the actuator, an output element coupled to the lever device and configured for absorbing a force from the lever device along a second force action axis, wherein the first and second force action axes are arranged offset with respect to one another, and a transmission element arranged between the actuator and the lever device. The transmission element may be coupled to the actuator in a first contact region and to the lever device in a second contact region. The first contact region of the transmission element may be arranged such that it is penetrated by the first force action axis. The second contact region of the transmission element may be arranged such that it is penetrated by the second force action axis.

First claim

What is claimed is:

1. A drive device for an injection valve, comprising:
an actuator configured to exert a force along a first axis of force action,
a lever device mechanically coupled to the actuator via a transmission element and configured to receive a force from the actuator along a second axis of force action offset with respect to the first axis of force action,
a drive output element mechanically coupled to the lever device and configured to absorb a force from the lever device, and
the transmission element including first and second contact regions and arranged between the actuator and the lever device, the transmission element coupled in the first contact region to the actuator and coupled in the second contact region to the lever device,
wherein the first contact region of the transmission element is intersected by the first axis of force action, the second contact region of the transmission element is intersected by the second axis of force action, and
the drive output element is intersected by the first and second axes of force action.

2. The drive device of claim 1 , wherein the transmission element comprises a convexly curved shape in at least one of the first and second contact regions.

3. The drive device of claim 1 , wherein the transmission element comprises a substantially hemispherical shape in at least one of the first and second contact regions.

4. The drive device of claim 1 , wherein at least one of the first and second contact regions of the transmission element comprises a substantially hemispherical shape with a radius substantially smaller than half of a distance between the first contact region and the second contact region.

5. The drive device of claim 1 , wherein at least one of the first and second contact regions of the transmission element comprises a substantially spherical segment having a radius greater than half of a distance between the first contact region and the second contact region.

6. The drive device of claim 1 , wherein the transmission element comprises a pin.

7. An injection valve including a drive device comprising:
an actuator configured to exert a force along a first axis of force action,
a lever device mechanically coupled to the actuator and configured to receive a force along a second axis of force action offset with respect to the first axis of force action,
a drive output element mechanically coupled to the lever device and configured to receive a force from the lever device, and
a transmission element arranged between the actuator and the lever device, the transmission element coupled in a first contact region to the actuator and coupled in a second contact region to the lever device,
wherein the first contact region of the transmission element and the drive output element are intersected by the first axis of force action, and the second contact region of the transmission element is intersected by the second axis of force action; and
wherein at least one of the first and second contact regions of the transmission element comprises a substantially hemispherical shape with a radius substantially smaller than half of a distance between the first contact region and the second contact region.

8. The injection valve of claim 7 , wherein at least one of the first and second contact regions of the transmission element comprises a substantially spherical segment having a radius greater than half of a distance between the first contact region and the second contact region.

9. The injection valve of claim 7 , wherein the transmission element comprises a pin.

10. An injection valve, comprising:
a drive device comprising
an actuator configured to exert a downward force along a first axis,
a pin-shaped transmission element having first and second ends, the pin-shaped transmission element located underneath the actuator with the first end in contact with the actuator to receive the downward force exerted by the actuator along the first axis,
a bell-shaped lever device located underneath and in contact with the transmission element, the lever device mechanically coupled to the actuator via the transmission element to receive the downward force from the actuator via the second end of transmission element along a second axis offset with respect to the first axis,
a drive output element in contact with the bell-shaped lever device and configured to move upward in response to force received from the lever device,
wherein the pin-shaped transmission element arranged between the actuator and the lever device consists of a first curved contact region on the first end and a second curved contact region on the second end, the first contact region intersected by the first axis and in contact with the actuator and the second contact region intersected by the second axis and in contact with the lever device.

11. The injection valve of claim 10 , wherein the contact regions of the transmission element are convexly curved shaped.

12. The injection valve of claim 10 , wherein the first and second contact regions of the transmission element are substantially hemispherical shaped.

13. The injection valve of claim 12 , wherein the hemispherical shaped first and second contact regions of the transmission element comprise radiuses substantially smaller than half of a distance between the first contact region and the second contact region.

14. The injection valve of claim 10 , wherein at least one of the first and second contact regions of the transmission element comprises a substantially spherical segment having a radius greater than half of a distance between the first contact region and the second contact region.

Assignees

• Kronberger Maximilian
• Freudenberg Hellmut
• Dick Jürgen
• Wechler Wolfgang
• Continental Automotive Gmbh

Inventors

• Kronberger Maximilian
• Freudenberg Hellmut
• Dick Jürgen
• Wechler Wolfgang

Classifications

• F02M63/0026

  using piezoelectric or magnetostrictive actuators · CPC title

• F02M2200/702

  with actuator and actuated element moving in different directions, e.g. in opposite directions · CPC title

• F02M2200/701

  mechanical · CPC title

• F02M51/0603 Primary

  using piezoelectric or magnetostrictive operating means · CPC title