# US 11,305,676 B2 · Adjusting device having a spindle drive for a seat element of a vehicle seat > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,676 B2 - Document ID: US11305676B2 - Status: Granted - Kind: B2 - Application number: 16/335,205 - Filed: 2017-09-27 - Published: 2021-09-09 - Granted: 2022-04-19 - Earliest claimed: 2016-09-30 - Assignees: Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Coburg - Applicants: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Coburg - Inventors: Sebastian Eichhorn; Florian Schmieder; Wera Wolniczak - Web page: https://patentgrep.com/patent/US11305676B2 ## CPC - B60N 2/6673: {with motor driven adjustments} - B60N 2/02246: {Electric motors therefor} - B60N 2/806: movable or adjustable - B60N 2/02253: {characterised by the transmission between the electric motor and the seat or seat parts} - B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR ## Abstract It is provided an adjusting device for a seat element of a vehicle seat supporting a body part of a seat user, with at least one driving device comprising a spindle drive and at least one adjustable support element for changing the contour or position of the seat element, wherein the spindle drive comprises a spindle extending along a spindle axis, which is floatingly mounted at a spindle end via a spindle holder such that at this spindle end the spindle is displaceable along at least one spatial direction extending transversely to the spindle axis. The spindle holder comprises a first and a second compensating element for a displaceability of the spindle end with respect to two first and second spatial directions extending approximately perpendicularly to each other and each perpendicularly to the spindle axis. ## Claims ### Claim 1 An adjusting device for a seat element of a vehicle seat supporting a body part of a seat user, with at least one driving device comprising a spindle drive and at least one adjustable support element for changing the contour or position of the seat element, wherein the spindle drive comprises a spindle extending along a spindle axis, which is floatingly mounted at a spindle end via a spindle holder, wherein the spindle holder comprises a first and a second compensating element for a displaceability of the spindle end with respect to two first and second spatial directions extending approximately perpendicularly to each other and each perpendicularly to the spindle axis, and wherein the spindle end is displaceably held on the first compensating element and the first compensating element together with the spindle end is displaceably held on the second compensating element. ### Claim 2 (depends on 1) The adjusting device according to claim 1, wherein the displaceable spindle end is positively held on the first compensating element and at least one of shiftable along the first spatial direction and rotatable about the first spatial direction, and the first compensating element is positively held on the second compensating element and at least one of shiftable along the second spatial direction and rotatable about the second spatial direction. ### Claim 3 (depends on 1) The adjusting device according to claim 1, wherein the first compensating element forms a channel-like receptacle in which an end piece of the spindle is positively and shiftably held in the manner of a sliding block. ### Claim 4 (depends on 3) The adjusting device according to claim 3, wherein the second compensating element limits a displacement of the spindle end relative to the first compensating element, wherein the second compensating element closes the channel-like receptacle of the first compensating element on the properly mounted adjusting device to such an extent that the end piece cannot be shifted out of the receptacle. ### Claim 5 (depends on 3) The adjusting device according to claim 3, wherein the second compensating element forms a channel-like receptacle in which the first compensating element is positively and shiftably held in the manner of a sliding block, wherein the receptacle of the first compensating element is open towards a first side, which by about 90° about the spindle axis is offset from a second side towards which the receptacle of the second compensating element is open. ### Claim 6 (depends on 1) The adjusting device according to claim 1, wherein the second compensating element limits a displacement of the spindle end relative to the first compensating element. ### Claim 7 (depends on 1) The adjusting device according to claim 1, wherein the second compensating element forms a channel-like receptacle in which the first compensating element is positively and shiftably held in the manner of a sliding block. ### Claim 8 (depends on 1) The adjusting device according to claim 1, wherein the second compensating element is provided on a guiding device of the adjusting device, via which the adjusting device is mounted to the vehicle seat as a premounted assembly. ### Claim 9 (depends on 1) The adjusting device according to claim 1, wherein the second compensating element is provided on a seat-fixed component of the vehicle seat, to which at least a part of the adjusting device is mounted as a premounted assembly. ### Claim 10 (depends on 1) The adjusting device according to claim 1, wherein the adjusting device comprises a guiding device on which a carrier of the adjusting device is shiftably mounted, which carries the at least one driving device. ### Claim 11 (depends on 10) The adjusting device according to claim 10, wherein the carrier is shiftable by means of the spindle drive of the driving device, whose spindle includes the spindle end displaceable via the first and second compensating elements. ### Claim 12 (depends on 11) The adjusting device according to claim 11, wherein the adjusting device includes an adjusting part shiftably mounted relative to the carrier, by means of which the at least one support element is adjustable, the adjusting device comprises two spindle drives with one spindle each, wherein a spindle end of a first spindle is displaceably held via the first and second compensating elements and a spindle nut meshing with another, second spindle is displaceable by elastically deforming a further, third compensating element, and wherein by means of the first spindle the carrier is shiftable along the guiding device together with the adjusting part and by means of the second spindle the carrier and the adjusting part are shiftable relative to each other. ### Claim 13 (depends on 10) The adjusting device according to claim 10, wherein the adjusting device includes an adjusting part shiftably mounted relative to the carrier, by means of which the at least one support element is adjustable. ### Claim 14 (depends on 1) The adjusting device according to claim 1, wherein the spindle drive comprises a spindle nut meshing with the spindle, and wherein the spindle nut is fixed to an adjusting part adjustable by means of the spindle drive via a bearing point, wherein at the bearing point at least one elastic compensating element is provided, via which the spindle nut is held on the adjusting part such that the spindle nut along with a portion of the spindle meshing with the spindle nut is displaceable at least along a spatial direction extending perpendicularly to the spindle axis by elastically deforming the compensating element. ### Claim 15 (depends on 14) The adjusting device according to claim 14, wherein the elastic compensating element is sleeve-shaped or ring-shaped. ### Claim 16 (depends on 1) The adjusting device according to claim 1, wherein the adjusting device comprises two spindle drives with one spindle each. ### Claim 17 (depends on 16) The adjusting device according to claim 16, wherein a spindle cooperates with a spindle nut drivable to perform a rotation about the associated spindle axis, while the other spindle is drivable to perform a rotation about its spindle axis and meshes with a non-rotatable spindle nut. ### Claim 18 (depends on 1) The adjusting device according to claim 1, wherein the adjusting device comprises two spindle drives with one spindle each, wherein a spindle end of a first spindle is displaceably held via the first and second compensating elements and a spindle nut meshing with another, second spindle is displaceable by elastically deforming a further, third compensating element. ### Claim 19 (depends on 1) The adjusting device according to claim 1, wherein at least one spindle nut or at least one spindle of the adjusting device with at least one portion is circumferentially supported on a bearing point via a two-part bearing shell, wherein via an individual bearing part of the bearing shell the spindle or spindle nut already is supported over more than half of the circumference. ### Claim 20 (depends on 1) The adjusting device according to claim 1, wherein the adjusting device is equipped and provided to variably change the shape or position of a support region or a side bolster of a seat underpart, a backrest or a headrest of a vehicle seat.