Actuating drive for an injection valve, and injection valve

• US 10,107,242 B2
• Filed: 08/21/2014
• Issued: 10/23/2018
• Est. Priority Date: 08/23/2013
• Status: Active Grant

• Current Assignee: Continental Automotive GmbH (Continental AG)
• Original Assignee: Continental Automotive GmbH (Continental AG)
• Inventors: Sanftleben, Emanuel, Simmet, Martin
• Primary Examiner(s): Vilakazi, Sizo
• Assistant Examiner(s): Manley, Sherman
• Application Number:
  US14/913,023
• Publication Number:
  US 20160201628A1
• Time in Patent Office: 1,524 Days
• CPC Class Codes: F02M 2200/9015 Elastomeric or plastic materials
• CPC Class Codes: F02M 51/005 Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
• CPC Class Codes: F02M 61/168 Assembling; Disassembling; Manufacturing; Adjusting

Abstract

An actuating drive for an injection valve may comprise: a sleeve-shaped actuator housing; an actuator unit disposed in the housing; at least one actuator feed line; at least one connector contact; a housing unit; a cover; and a first sealing unit. The at least one actuator feed line may protrude from an end-side opening of the actuator housing. The at least one connector contact may be coupled electrically to the at least one actuator feed line and configured to be coupled electrically to a system-side connector. The housing unit may be arranged along a circumference of the actuator housing in an end-side shell surface section of the actuator housing and configured to fix the at least one connector contact in a predefined position. The cover may close a cavity defined by the housing unit and be coupled mechanically to the housing unit. The first sealing element may be arranged between the housing unit and the cover to prevent penetration of solid, liquid, or gaseous media into the cavity.

Claims

1. An actuating drive for an injection valve, the drive comprising:

a sleeve-shaped actuator housing with an actuator unit disposed therein;

an actuator feed line protruding from a first end of the actuator housing into a cavity defined by a housing unit arranged at least along a circumference of the actuator housing,

a connector contact coupled electrically to the actuator feed line within the cavity and configured to be coupled electrically to a system-side connector within the housing unit,

the housing unit arranged along a circumference of the actuator housing in a shell surface section at the first end of the actuator housing and configured to fix the connector contact in a predefined position,

a cover coupled mechanically to the housing unit to close the cavity without penetration by the actuator feed line or the connector contact, and

a first sealing element forming a seal with both the housing unit and the cover to prevent penetration of solid, liquid or gaseous media into the cavity.

2. The actuating drive as claimed in claim 1, wherein the cavity has a hollow-cylindrical configuration and the first sealing element is arranged along an inner wall which surrounds the hollow-cylindrical cavity.

3. The actuating drive as claimed in claim 1, further comprising a second sealing element arranged between an outer side of the actuator housing and an inner side of the housing unit, and wherein the inner side faces in the direction of the actuator housing.

4. The actuating drive as claimed in claim 3, wherein the first sealing element and/or the second sealing element is a sealing ring.

5. The actuating drive as claimed in claim 1, wherein the cover is a fixing element for the first sealing element, the fixing element disposed to hold the first sealing element in a position spaced apart in a predefined manner from a side of the cover which faces into the cavity.

6. The actuating drive as claimed in claim 4, wherein the actuator housing has a projection along its circumference, and the second sealing element is arranged on a side of the projection which faces an opening in the first end of the actuator housing.

7. The actuating drive as claimed in claim 1, wherein the cover includes at least one latching hook configured to couple the cover mechanically to the housing unit.

8. The actuating drive as claimed in claim 1, further comprising:

a third sealing element, and

a plug-in connector housing,

wherein the connector contact is arranged at least partially within the plug-in connector housing,

the plug-in connector housing including a transition region, in which the connector contact emerges from the plug-in connector housing for coupling to the system-side connector, and

the third sealing element arranged at least partially in the transition region,

the third sealing element connecting the connector contact in a positively locking or medium-tight manner to the plug-in connector housing.

9. The actuating drive as claimed in claim 1, further comprising a spiral clamping pin coupling the housing unit and the actuator housing mechanically.

10. The actuating drive as claimed in claim 1, wherein the housing unit and the plug-in connector housing are formed integrally in one piece.

11. An injection valve for an internal combustion engine of a motor vehicle for injecting fuel, comprising:

a nozzle for dispensing fuel into a chamber of the internal combustion engine;

a needle for alternatively blocking and allowing fuel flow through the nozzle;

an actuator moving the nozzle between a closed and an open position;

a sleeve-shaped actuator housing with an actuator unit disposed therein;

an actuator feed line protruding from a first end of the actuator housing into a cavity defined by a housing unit,

a connector contact coupled electrically to the actuator feed line within the cavity and configured to be coupled electrically to a system-side connector within the housing unit,

the housing unit arranged along a circumference of the actuator housing in a shell surface section at the first end of the actuator housing and configured to fix the connector contact in a predefined position,

a cover coupled mechanically to the housing unit to close the cavity without penetration by the actuator feed line or the connector contact, and

a first sealing element forming a seal with both the housing unit and the cover to prevent penetration of solid, liquid or gaseous media into the cavity.

12. The injection valve as claimed in claim 11, wherein the cavity has a hollow-cylindrical configuration and the first sealing element is arranged along an inner wall which surrounds the hollow-cylindrical cavity.

13. The injection valve as claimed in claim 11, further comprising a second sealing element arranged between an outer side of the actuator housing and an inner side of the housing unit, and wherein the inner side faces in the direction of the actuator housing.

14. The injection valve as claimed in claim 13, wherein the first sealing element and/or the second sealing element is a sealing ring.

15. The injection valve as claimed in claim 11, wherein the cover is a fixing element for the first sealing element, the fixing element disposed to hold the first sealing element in a position spaced apart in a predefined manner from a side of the cover which faces into the cavity.

16. The injection valve as claimed in claim 14, wherein the actuator housing has a projection along its circumference, and the second sealing element is arranged on a side of the projection which faces the end-side opening of the actuator housing.

17. The injection valve as claimed in claim 11, wherein the cover includes a latching hook configured to couple the cover mechanically to the housing unit.

18. The injection valve as claimed in claim 11, further comprising:

a third sealing element, and

a plug-in connector housing,

wherein the connector contact is arranged at least partially within the plug-in connector housing,

the plug-in connector housing including a transition region, in which the connector contact emerges from the plug-in connector housing for coupling to the system-side connector, and

the third sealing element arranged at least partially in the transition region,

the third sealing element connecting the connector contact in a positively locking or medium-tight manner to the plug-in connector housing.

19. The injection valve as claimed in claim 11, further comprising a spiral clamping pin coupling the housing unit and the actuator housing mechanically.

20. The injection valve as claimed in claim 11, wherein the housing unit and the plug-in connector housing are formed integrally in one piece.