Lever device and a fuel injection valve

Patent metadata

Field	Value
Publication number	US-9500169-B2
Application number	US-201214369812-A
Country	US
Kind code	B2
Filing date	Dec 19, 2012
Priority date	Dec 30, 2011
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A lever device for a fuel injection valve includes a housing with a housing recess, at least one lever element arranged in the housing recess, a drive element arranged in the housing recess and coupled to the lever element(s) in order to act upon said at least one lever element in a direction of a force-action axis, and an output element arranged in the housing recess and coupled to the lever element(s) such that this output element is moveable in the force-action axis direction by the at least one lever element. Each lever element includes a coupling section designed or arranged such that the lever element is coupled to the housing, or to the output element, in a rotationally-fixed manner with respect to the force-action axis.

First claim

What is claimed is:

1. A lever device for an injection valve, the lever device comprising:
a housing having a housing recess,
at least one lever element arranged in the housing recess,
a drive element arranged in the housing recess and coupled to the at least one lever element for acting on the at least one lever element in a direction of a force action axis, and
an output element arranged in the housing recess and coupled to the at least one lever element such that the output element is moveable in the direction of the force action axis by the at least one lever element, and
wherein a coupling section of each lever element comprises a planar wall section that interacts with a corresponding planar wall section of the output element such that each lever element is fixedly coupled to the output element and during actuation, each lever element rotates with the output element around the force action axis.

2. The lever device of claim 1 , wherein the coupling section of each lever element comprises a planar wall section that interacts with a corresponding planar wall section of the housing recess such that each lever element is fixedly coupled to the housing and during actuation, each lever element rotates with the housing around the force action axis.

3. A lever device for an injection valve, the lever device comprising:
a housing having a housing recess,
at least one lever element arranged in the housing recess,
a drive element arranged in the housing recess and coupled to the at least one lever element for acting on the at least one lever element in a direction of a force action axis, and
an output element arranged in the housing recess and coupled to the at least one lever element such that the output element is moveable in the direction of the force action axis by the at least one lever element,
wherein each of the at least one lever element comprises a coupling section of each lever element comprising a recess, and
the housing comprises a pin arranged in the recess of the coupling section of each lever element such that each lever element is fixedly coupled to the housing fixedly such that each lever element rotates with the housing around the force action axis.

4. The lever device of claim 3 , wherein the pin extends parallel to the force action axis.

5. The lever device of claim 3 , comprising a first lever element and a second lever element,
wherein the coupling section of the first lever element comprises a first planar wall section, and the coupling section of the second lever element comprises a second planar wall section that is co-planar with the first planar wall section of the first lever element.

6. The lever device of claim 3 , wherein the coupling section of each lever element comprises a pair of planar wall sections on opposite sides of the respective lever element.

7. An injection valve, comprising:
a lever device comprising:
a housing having a housing recess,
at least one lever element arranged in the housing recess,
a drive element arranged in the housing recess and coupled to the at least one lever element for acting on the at least one lever element in a direction of a force action axis, and
an output element arranged in the housing recess and coupled to the at least one lever element such that the output element is moveable in the direction of the force action axis by the at least one lever element,
each lever element of the lever device comprises a coupling section with a planar wall section that interacts with a corresponding planar wall section of the output element such that each lever element is fixedly coupled to the output element and during actuation, each lever element rotates with the output element around the force action axis,

a valve needle coupled to or defining the output element,
wherein the drive element of the lever device and the valve needle are coupled to each another such that, based on an actuating signal, the valve needle prevents a fluid flow through the injection valve in a closed position of the valve needle and releases a fluid flow through the injection valve in other positions of the valve needle.

8. The injection valve of claim 7 , wherein the coupling section of each lever element of the lever device comprises a planar wall section that interacts with a corresponding planar wall section of the housing recess such that each lever element is fixedly coupled to the housing and during actuation, each lever element rotates with the housing around the force action axis.

9. An injection valve, comprising:
a lever device comprising:
a housing having a housing recess,
at least one lever element arranged in the housing recess,
a drive element arranged in the housing recess and coupled to the at least one lever element for acting on the at least one lever element in a direction of a force action axis, and
an output element arranged in the housing recess and coupled to the at least one lever element such that the output element is moveable in the direction of the force action axis by the at least one lever element,
wherein each of the at least one lever element comprises a coupling section comprising a recess,

a valve needle coupled to or defining the output element,
wherein the drive element of the lever device and the valve needle are coupled to each another such that, based on an actuating signal, the valve needle prevents a fluid flow through the injection valve in a closed position of the valve needle and releases a fluid flow through the injection valve in other positions of the valve needle, and
the housing comprises a pin arranged in the recess of the coupling section of each lever element such that each lever element is fixedly coupled to the housing fixedly such that each lever element rotates with the housing around the force action axis.

10. The injection valve of claim 9 , wherein each pin extends parallel to the force action axis.

11. The injection valve of claim 9 , wherein the lever device comprises a first lever element and a second lever element,
wherein the coupling section of the first lever element comprises a first planar wall section, and the coupling section of the second lever element comprises a second planar wall section that is co-planar with the first planar wall section of the first lever element.

12. The injection valve of claim 9 , wherein the coupling section of each lever element of the lever device comprises a pair of planar wall sections on opposite sides of the respective lever element.

Assignees

• Lehmann Stefan
• Freudenberg Hellmut
• Kohn Stefan
• Kuchler Robert
• Hannich Manuel
• Feigl Roland
• Wechler Wolfgang
• Wicke Matthias
• Continental Automotive Gmbh

Inventors

• Lehmann Stefan
• Freudenberg Hellmut
• Kohn Stefan
• Kuchler Robert
• Hannich Manuel
• Feigl Roland
• Wechler Wolfgang
• Wicke Matthias

Classifications

• F02M61/168

  Assembling; Disassembling; Manufacturing; Adjusting · CPC title

• F02M61/10

  Other injectors with elongated valve bodies, i.e. of needle-valve type · CPC title

• F02M63/0026

  using piezoelectric or magnetostrictive actuators · CPC title

• F02M51/0603 Primary

  using piezoelectric or magnetostrictive operating means · CPC title

• F02M2200/702

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