Device for height and longitudinal adjustment of a steering column of a motor vehicle
First Claim
1. A device for effecting height and longitudinal adjustment of a steering column of a motor vehicle, comprising a first adjusting device for height adjusting the steering column;
- a second adjusting device for longitudinally adjusting the steering column;
a locking device having open and closed positions for simultaneously opening and closing the first and second adjusting devices and including a locking bolt;
a bracket fixedly securable to a motor vehicle chassis;
a guide member pivotally supported on the bracket, the locking bolt being supported in the guide member and extending through an opening formed in the bracket, the locking bolt being displaceable in the guide member in a direction of a locking bolt axis and being displaceable, for the height adjustment of the steering column, together with the guide member, transverse to an axial extent thereof and substantially transverse to an axial extent of a steering shaft of the steering column; and
a steering volume tube having a longitudinal bore extending in an axial direction of the steering shaft and through which the locking bolt extends, the steering volume tube being displaceable in the axial direction of the steering shaft to provide for longitudinal adjustment of the steering column,wherein the first adjusting device comprises a lamella stack formed of alternating large and small lamellas through which the locking bolt extends, first and second clamping plates arranged on opposite sides of the lamella stack for clamping same in a closed position of the first adjusting device, and spring means for distancing the first and second clamping plates further away from each other in an open position of the first adjusting device, wherein the large lamellas are arranged one of in the bracket and on the bracket with a possibility of changing of spacing therebetween but without a possibility of displacement in a direction of the height adjustment of the steering column, the large lamellas each having an inner recess for enabling displacement of the locking bolt relative to the bracket in the open position of the first adjusting device to enable the height adjustment of the steering column, and wherein the small lamellas are arranged for displacement in an axial direction of the locking bolt but without a possibility of displacement relative to the locking bolt in the direction of the height adjustment of the steering column, the small lamellas being displaceable with respect to the large lamellas in the open position of the first adjusting device upon the displacement of the locking bolt relative to the bracket.
3 Assignments
0 Petitions
Accused Products
Abstract
A device for effecting height and longitudinal adjustment of a steering column of a vehicle and including first and second adjustment devices for adjusting, respectively, height and length of the steering column, with the first adjusting devices including a lamella stack formed of alternating large and small lamellas through which a locking bolt extends, with the large lamellas being arranged in or on the bracket with a possibility of changing of spacing therebetween but without a possibility of displacement in a direction of the height adjustment of the steering column, the large lamellas having each an inner recess for enabling displacement of the locking bolt relative to the bracket in the open position of the first adjusting device to enable the height adjustment of the steering column, and with the small lamellas being arranged for displacement in an axial direction of the locking bolt but without a possibility of displacement relative to the locking bolt in the direction of the height adjustment of the steering column.
-
Citations
36 Claims
-
1. A device for effecting height and longitudinal adjustment of a steering column of a motor vehicle, comprising a first adjusting device for height adjusting the steering column;
- a second adjusting device for longitudinally adjusting the steering column;
a locking device having open and closed positions for simultaneously opening and closing the first and second adjusting devices and including a locking bolt;
a bracket fixedly securable to a motor vehicle chassis;
a guide member pivotally supported on the bracket, the locking bolt being supported in the guide member and extending through an opening formed in the bracket, the locking bolt being displaceable in the guide member in a direction of a locking bolt axis and being displaceable, for the height adjustment of the steering column, together with the guide member, transverse to an axial extent thereof and substantially transverse to an axial extent of a steering shaft of the steering column; and
a steering volume tube having a longitudinal bore extending in an axial direction of the steering shaft and through which the locking bolt extends, the steering volume tube being displaceable in the axial direction of the steering shaft to provide for longitudinal adjustment of the steering column,wherein the first adjusting device comprises a lamella stack formed of alternating large and small lamellas through which the locking bolt extends, first and second clamping plates arranged on opposite sides of the lamella stack for clamping same in a closed position of the first adjusting device, and spring means for distancing the first and second clamping plates further away from each other in an open position of the first adjusting device, wherein the large lamellas are arranged one of in the bracket and on the bracket with a possibility of changing of spacing therebetween but without a possibility of displacement in a direction of the height adjustment of the steering column, the large lamellas each having an inner recess for enabling displacement of the locking bolt relative to the bracket in the open position of the first adjusting device to enable the height adjustment of the steering column, and wherein the small lamellas are arranged for displacement in an axial direction of the locking bolt but without a possibility of displacement relative to the locking bolt in the direction of the height adjustment of the steering column, the small lamellas being displaceable with respect to the large lamellas in the open position of the first adjusting device upon the displacement of the locking bolt relative to the bracket. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
wherein the large lamellas are arranged one of in the steering tube and on the steering volume tube with a possibility of changing spacing therebetween but without of a possibility of displacement in an axial direction, the large lamellas having each an inner recess for enabling displacement of the steering volume tube in the axial direction of the steering shaft in the open position of the second adjusting device, and wherein the small lamellas are supported for displacement in the axial direction of the locking bolt but without a possibility of displacement relative to the locking bolt in the axial direction of the steering spindle, the small lamella being displaceable relative to the large lamellas during an axial displacement of the steering volume tube. -
27. A device as set forth in claim 26, wherein the spring means of the second adjusting device comprises a plurality of compression springs.
-
28. A device as set forth in claim 27, wherein the compression springs are arranged in respective recesses formed in respective guide lamellas between a spring cup and a spring sump which has, in a region of a longitudinal bore of the steering volume tube, a pot-shaped formation extending through the longitudinal bore.
-
29. A device as set forth in claim 28, wherein the spring cup and sump are located in respective recesses formed in the guide lamellas and are displaced together with the guide lamellas upon displacement of the steering volume tube relative to the bracket.
-
30. A device as set forth in claim 27, wherein the second clamping plate of the second adjusting device has a shaped projection on which the small lamellas of the second clamping plate are supported for displacement in the axial direction of the locking bolt.
-
31. A device as set forth in claim 30, wherein the compression springs are located in blind bores formed in the shaped projection.
-
32. A device as set forth in claim 26, wherein the large and small lamellas of the second adjusting device have upper and lower edge strips tangent-bent in a direction toward the steering shaft, and wherein surfaces of the first and second clamping plates of the second adjusting device adjacent to respective lamellas have tangent-bent sections having a shape corresponding to that of the clamping plate.
-
33. A device as set forth in claim 26, wherein the second clamping plate of the second adjusting device is formed by a section of an inner wall of the steering volume tube which surround a longitudinal bore through which the locking bolt extends.
-
34. A device as set forth in claim 26, wherein the second clamping plate of the second adjusting means is supported on a free end of the locking bolt with a head of the locking bolt engaging an end surface of the second clamping plate in a region of an opening through which the locking bolt extends, and wherein the steering volume tube is displaced by the second clamping plate of the second adjusting means.
-
35. A device as set forth in claim 1, wherein the second adjusting device is formed by two compression plates preloaded by the locking bolt.
-
36. A device as set forth in claim 35, wherein the compression plates are formed by inner walls of the steering volume tube in a region of a longitudinal bore of the steering volume tube.
- a second adjusting device for longitudinally adjusting the steering column;
Specification