Force transfer device
View Patent ↗A force transfer device, comprising a hub, disposed in the drive train of a motor vehicle for torque transfer between a drive unit and a transmission, in particular a turbine shell hub of a turbine shell of a hydrodynamic machine, coupled to a damper hub with a vibration damper device connected in between. The vibration damping device is provided with a mechanical stop device, which becomes effective, as soon as a maximum design load of the vibration damping device is exceeded, and the mechanical stop device is disposed between the turbine shell hub and the damper hub.
1. A force transfer device ( 2 ), comprising:
a vibration damper device including:
an input component including a plurality of coupling elements extending toward an axis of rotation for the force transfer device in a radial direction orthogonal to the axis of rotation;
an output component; and,
at least one spring engaged with the input component and the output component to enable relative rotation of the input component with respect to the output component;
a turbine shell forming an outer circumference of a turbine;
a turbine shell hub ( 17 ) connected to the turbine shell such that rotation of the turbine shell hub is locked to rotation of the turbine shell, and including:
a portion arranged to contact an input shaft for a transmission while being rotatable with respect to the input shaft;
a first plurality of stop elements:
extending from the portion of the turbine shell hub in an axial direction parallel to the axis of rotation; and
engaged with the plurality of coupling elements such that rotation of the plurality of coupling elements is locked to rotation of the first plurality of stop elements; and,
a second plurality of stop elements including:
respective first portions:
extending from the portion of the turbine shell hub in the axial direction;
engaged with the plurality of coupling elements such that rotation of the plurality of coupling elements is locked to rotation of the second plurality of stop elements; and,
aligned with and alternating with respective stop elements from the first plurality of stop elements in a circumferential direction; and,
a third plurality of stop elements:
extending from the respective first portions in the radial direction toward the axis of rotation; and,
radially inward of the first plurality of stop elements; and,
a damper hub ( 16 ):
connected to the output component such that rotation of the damper hub is locked to rotation of the output component;
arranged to engage the input shaft for the transmission to transmit torque to the input shaft; and,
including a fourth plurality of stop elements:
extending in the radial direction away from the axis of rotation;
at least partially aligned with the third plurality of stop elements in the circumferential direction; and,
when the load on the force transfer device is less than the maximum design load, at least partly aligned with the second plurality of stop elements in the radial direction and separated from the third plurality of stop elements by second respective spaces in the circumferential direction.
2. The force transfer device ( 2 ) recited in claim 1 , wherein the plurality of coupling elements extends into interspaces between the first plurality of stop elements, and wherein the size of the interspaces, viewed in a circumferential direction, exceeds the width of the plurality of coupling elements.
3. The force transfer device ( 2 ) recited in claim 1 , wherein the plurality of coupling elements is aligned with the turbine shell hub ( 17 ) an axial direction.
4. The force transfer device ( 2 ) recited in claim 1 , wherein the plurality of coupling elements is aligned with the damper hub ( 16 ) in a radial direction.
5. The force transfer device ( 2 ) recited in claim 1 , wherein the first plurality of stop elements is aligned with the damper hub ( 16 ) in a radial direction.
6. The force transfer device ( 2 ) recited in claim 1 , wherein the first plurality of stop elements is aligned with the damper hub ( 16 ) in an axial direction.
7. The force transfer device ( 2 ) recited in claim 1 , wherein the plurality of coupling elements is disposed at the turbine shell hub ( 17 ) with even respective distances from each other in circumferential direction and the first plurality of stop elements is disposed at the damper hub ( 16 ) with even respective distances from each other in the circumferential direction.
8. The force transfer device ( 2 ) recited in claim 1 , wherein the first plurality of stop elements is provided as circular arc segment shaped elements, integrally formed with the turbine shell hub ( 17 ).
9. The force transfer device ( 2 ) recited in claim 1 , wherein the first and second pluralities of stop elements, and the plurality of coupling elements are disposed at the input component ( 10 ), respectively offset from one another in circumferential direction, forming interspaces ( 20 . 1 through 20 . 8 ; 21 . 1 through 21 . 8 ), and the first plurality of stop engage the interspaces ( 20 . 1 through 20 . 8 ) between the plurality of coupling elements at the input component ( 10 ).
10. The force transfer device ( 2 ) recited in claim 9 , wherein the engaging occurs without clearance.