Drive system for an exhaust gas flap

Patent metadata

Field	Value
Publication number	US-10443754-B2
Application number	US-201715431819-A
Country	US
Kind code	B2
Filing date	Feb 14, 2017
Priority date	Mar 7, 2016
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A drive system for an exhaust gas flap of a vehicle exhaust gas system includes a drive element that is connected to an adjustment drive and an output element that is connected to an exhaust gas flap spindle. A resilient element is arranged between the drive element and the output element and comprises a center section and two end sections. The center section is used to transfer torque between the drive element and the output element, and wherein the center section and two end sections are coupled to the drive element or to the output element.

First claim

The invention claimed is:

1. A drive system for an exhaust gas flap of a vehicle exhaust gas system comprising:
a drive element is provided for the purpose of being connected to an adjustment drive; and
an output element is provided for the purpose of being connected to an exhaust gas spindle,
wherein a resilient element is provided that is arranged between the drive element and the output element and comprises a center section and two end sections,
wherein the center section is used to transfer torque between the drive element and the output element, and
wherein the center section and the two end sections are coupled to the drive element or wherein the center section and the tow end sections are coupled to the output element.

2. The drive system as set forth in claim 1 , wherein the center section is connected by way of two connecting sections to the end sections, and the connecting sections are used to transfer torque between the drive element and output element, wherein the connecting sections are coupled to the output element or the drive element.

3. The drive system as set forth in claim 2 , wherein each of the connecting sections is engaged in a slot that extends parallel to the axis of rotation of the drive element or the output element.

4. The drive system as set forth in claim 3 , wherein the slots are arranged in a U-shaped receiving element, and the slots are located in arms of the U-shape, and wherein the slots are open on one side.

5. The drive system as set forth in claim 2 , wherein each of the connecting sections comprise two resilient sections that extend adjacent to one another and comprise a connecting resilient section that connects said two resilient sections.

6. The drive system as set forth in claim 2 , wherein in a load-free state the center section and the connecting sections lie in a first plane and the end sections lie in a second plane that is spaced from the first plane.

7. The drive system as set forth in claim 2 , wherein the resilient element in a plan view is in a shape of an eight, wherein the center section forms a center section of the eight and the connecting sections form an outer contour of the eight.

8. The drive system as set forth in claim 1 , wherein the center section engages in a groove that is provided on the drive element or on the output element, wherein a longitudinal axis of the groove extends in a transverse manner and in a manner perpendicular with respect to an axis of rotation of the drive element or the output element.

9. The drive system as set forth in claim 8 , wherein the groove is allocated a hole and the two end sections engage in said hole.

10. The drive system as set forth in claim 9 , wherein a center axis of the hole extends in a transverse manner and in a manner perpendicular with respect to the longitudinal axis of the groove.

11. The drive system as set forth in claim 8 , wherein the two end sections engage into the groove, wherein the two end sections lie on a base of the groove.

12. The drive system as set forth in claim 1 , wherein the center section of the resilient element is reinforced or is embodied in a multi-layered manner.

13. The drive system as set forth in claim 1 , wherein a rigidity of the resilient element for transferring torque between the drive element and the output element is greater than a rigidity of the resilient element for axially coupling in a resilient manner the drive element and the output element.

14. The drive system as set forth in claim 1 , wherein the resilient element is comprised of a resilient wire.

15. The drive system as set forth in claim 1 , wherein one of the drive element and the output element includes a shaft end, and wherein the center section and the two end sections are directly coupled to the shaft end.

16. The drive system as set forth in claim 15 , wherein the shaft end includes a shaft end face with a groove, and wherein the center section and the two end sections are directly received within the groove.

17. The drive system as set forth in claim 16 , wherein the other of the drive element and the output element includes a receiving element with slots, and wherein the two end sections are connected by way of two connecting sections to the center section, and wherein the two connecting sections are mounted in the slots.

18. The drive system as set forth in claim 15 , wherein the shaft end includes a shaft end face with a groove and a hole, and wherein the center section is directly received within the groove and the two end sections are directly received within the hole.

19. The drive system as set forth in claim 18 , wherein the other of the drive element and the output element includes a receiving element with slots, and wherein the two end sections are connected by way of two connecting sections to the center section, and wherein the two connecting sections are mounted in the slots.

Assignees

• Faurecia Emissions Control Technologies Germany Gmbh
• Faurecia Emissions Control Tech Gmbh

Inventors

• Steinhauser Otto

Classifications

• F01N2390/00

  Arrangements for controlling or regulating exhaust apparatus · CPC title

• F02D9/1075

  Materials, e.g. composites · CPC title

• F16K31/043 Primary

  characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means · CPC title

• F02D9/04

  concerning exhaust conduits (throttle valves, or arrangements thereof in conduits F02D9/08) · CPC title

• F02D9/1065 Primary

  Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like · CPC title