Shifting device

Patent metadata

Field	Value
Publication number	US-12140189-B2
Application number	US-202117922397-A
Country	US
Kind code	B2
Filing date	Apr 26, 2021
Priority date	May 15, 2020
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

A shifting device ( 1 ) for the powertrain of a motor vehicle, including a control shaft ( 10 ) for adjusting a control element ( 9 ), the control shaft ( 10 ) has a first sub-section ( 15 ) which can be driven by an actuator ( 36 ) and a second sub-section ( 16 ) which is designed to adjust the control element ( 9 ). The first sub-section ( 15 ) is rotatably mounted relative to the second sub-section ( 16 ). A spring element ( 11 ), via which a torque of the first sub-section ( 15 ) can be transmitted to the second sub-section ( 16 ), is provided between the two sub-sections ( 15, 16 ).

First claim

The invention claimed is:

1. A shifting device for a powertrain of a motor vehicle, the shifting device comprising:
a housing in which a first drive shaft and a second drive shaft are rotatably mounted, the first drive shaft and the second drive shaft are arranged coaxially to one another and have a common axis of rotation;
a shiftable clutch is arranged between the first drive shaft and the second drive shaft; wherein the clutch has an open shift position, in which the first drive shaft is freely rotatable relative to the second drive shaft, and has a closed shift position in which the first drive shaft is connected to the second drive shaft via the clutch in a rotationally fixed manner;
the clutch includes a non-displaceable clutch element that is not displaceable in a direction of the common axis of rotation and a displaceable clutch element that is displaceable in the direction of the common axis of rotation by a control element;
a control shaft oriented orthogonal to the common axis of rotation, the control shaft is configured to adjust the control element, and the control shaft has a first sub-section which is drivable by an actuator and a second sub-section which is configured to adjust the control element;
the first sub-section is rotatably mounted relative to the second sub-section;
a spring element, via which a torque of the first sub-section is transmittable to the second sub-section, located between the two sub-sections; and
an end stop for the displaceable clutch element which, in the direction of the common axis of rotation of the first drive shaft and the second drive shaft, determines an end position of the displaceable clutch element in the open shift position, the end stop being positioned directly adjacent a radially outer surface of the second drive shaft.

2. The shifting device according to claim 1 , wherein the clutch is a claw clutch.

3. The shifting device according to claim 1 , wherein the first sub-section is mounted relative to the second sub-section such that, when the first sub-section rotates in a first direction, the torque is transmitted to the second sub-section by a force flow via the spring element.

4. The shifting device according to claim 3 , wherein the first sub-section is mounted relative to the second sub-section such that, when the first sub-section rotates in a second direction, the torque is transmitted to the second sub-section without the force flow via the spring element.

5. The shifting device according to claim 4 , wherein a rotation of the first sub-section in the first direction causes the clutch to be shifted into the closed shift position, and a rotation of the first sub-section in the opposite second direction causes the clutch to be shifted into the open shift position.

6. The shifting device according to claim 1 , wherein the spring element is a torsion spring.

7. The shifting device according to claim 1 , wherein the first or the second sub-section is rotatably mounted with one end in the respective other sub-section, and the spring element is mounted radially in relation to an axis of rotation of the control shaft between the first sub-section and the second sub-section.

8. The shifting device according to claim 1 , wherein a maximum relative rotational movement of the first sub-section relative to the second sub-section is defined by a contour of the first sub-section, into which a radial extension of the second sub-section protrudes.

9. The shifting device according to claim 1 , wherein the control shaft is a pinion shaft.

10. The shifting device according to claim 1 , wherein the end stop is configured to contact an axial end face of the displaceable clutch element to determine the end position of the displaceable clutch element in the open shift position.

11. A shifting device for a powertrain of a motor vehicle, the shifting device comprising:
a housing in which a first drive shaft and a second drive shaft are rotatably mounted, the first drive shaft and the second drive shaft are arranged coaxially to one another and have a common axis of rotation;
a shiftable clutch arranged between the first drive shaft and the second drive shaft;
the shiftable clutch has an open shift position, in which the first drive shaft is freely rotatable relative to the second drive shaft, and has a closed shift position in which the first drive shaft is connected to the second drive shaft via the clutch in a rotationally fixed manner;
the clutch includes an axially fixed clutch element and an axially displaceable clutch element that is displaceable by a control element;
a control shaft oriented orthogonal to the common axis of rotation, the control shaft is configured to adjust the control element, and the control shaft has a first sub-section which is rotatable by an actuator and a second sub-section which is configured to displace the control element such that the axially displaceable clutch element is displaced;
the first sub-section is rotatably mounted relative to the second sub-section, wherein a maximum relative rotational movement of the first sub-section relative to the second sub-section is defined by a contour of the first sub-section that opens radially inward in relation to an axis of rotation of the control shaft, into which a radial extension of the second sub-section protrudes radially outward from an outer surface of the second sub-section in a direction transverse to the axis of rotation of the control shaft, the radial extension directly contacts a force transmission surface of the contour at the maximum relative rotational movement of the first sub-section relative to the second sub-section; and
a torsion spring located between the first sub-section and the second sub-section through which a torque on the first sub-section is transmittable to the second sub-section.

12. The shifting device according to claim 11 , wherein the clutch is a claw clutch.

13. The shifting device according to claim 11 , wherein the first sub-section is rotatably mounted relative to the second sub-section such that, when the first sub-section rotates in a first direction, the torque is transmitted to the second sub-section via the torsion spring.

14. The shifting device according to claim 13 , wherein the first sub-section is mounted relative to the second sub-section such that, when the first sub-section rotates in a second direction, the torque is transmitted to the second sub-section without a force flow via the torsion spring.

15. The shifting device according to claim 14 , wherein a rotation of the first sub-section in the first direction causes the clutch to be shifted into the closed shift position, and a rotation of the first sub-section in the opposite second direction causes the clutch to be shifted into the open shift position.

16. The shifting device according to claim 11 , wherein the first or the second sub-section is rotatably mounted with one end in the respective other sub-section, and the torsion spring is mounted radially in relation to the axis of rotation of the control shaft between the first sub-section and the second sub-section.

17. The shifting device according to claim 11 , wherein the control shaft is a pinion shaft.

18. The shifting device according to claim 11 , further comprising an end stop for the displaceable clutch element which, in a direction of the common axis of rotation of the drive shafts, determines an end position of the displaceable clutch element in the open shift position.

19. The shifting device according to claim 18 , wherein the first sub-section is ro

Assignees

• Schaeffler Technologies Ag

Inventors

• Loeffelmann Jochen
• Ruder Viktor
• Reuss Felix
• Huemmer Thomas
• Wagner Alexander
• Wirth Alexander

Classifications

• F16D28/00

  Electrically-actuated clutches (arrangements for synchronisation F16D23/02; clutches actuated directly by means of an electromagnet F16D27/00; automatic clutches F16D43/00 - F16D45/00; external control F16D48/00) · CPC title

• F16D23/14

  Clutch-actuating sleeves {or bearings}; Actuating members directly connected to clutch-actuating sleeves {or bearings} · CPC title

• F16D2023/123

  Clutch actuation by cams, ramps or ball-screw mechanisms · CPC title

• B60Y2400/405

  Electric motors actuators · CPC title

• B60Y2400/421

  Dog type clutches or brakes · CPC title