Seat assembly

Abstract

A seat assembly includes: a seat base; a seat bottom connected to the seat base; and a seat back rotatably connected to at least one of the seat base or the seat bottom. The seat assembly also includes at least one of a seat bottom adjuster, a height adjuster, armrests, a headrest assembly, or a leg support assembly.

Description

[0001] Cross-references to related applications This application claims the benefit and priority of U.S. Provisional Application 63 / 787,312, filed April 11, 2025, the disclosure of which is incorporated herein by reference in its entirety as if fully set forth herein. Technical Field

[0002] This disclosure generally relates to seating assemblies, including seating assemblies that can be used, for example, in conjunction with a vehicle. Brief description of the attached diagram While the claims are not limited to the specific illustrations, an understanding of the various aspects can be obtained through the discussion of various examples. The drawings are not necessarily to scale, and certain features may be exaggerated or omitted to better illustrate and explain the innovative aspects of the examples. Furthermore, the exemplary illustrations described herein are not exhaustive or otherwise limiting, and the embodiments are not limited to the precise forms and configurations illustrated in the drawings or disclosed in the detailed description below. The exemplary illustrations are described in detail below with reference to the accompanying drawings: Figure 1 This is a schematic side view illustrating an embodiment of a seat assembly according to the teachings of this disclosure.

[0003] Figures 2 to 6 An embodiment of a seat assembly including a seat bottom adjuster is illustrated in accordance with the teachings of this disclosure.

[0004] Figures 7 to 11 An embodiment of a seat assembly including a seat bottom adjuster is illustrated in accordance with the teachings of this disclosure.

[0005] Figures 12 to 14 An embodiment of a seat assembly including a seat bottom adjuster is illustrated in accordance with the teachings of this disclosure.

[0006] Figures 15 to 20 An embodiment of a seat assembly including a seat bottom adjuster is illustrated in accordance with the teachings of this disclosure.

[0007] Figures 21-35 illustrate embodiments of a seat assembly including armrests in accordance with the teachings of this disclosure.

[0008] Figures 36 to 48 The illustration shows an embodiment of a headrest assembly and a seat assembly including the headrest assembly in accordance with the teachings of this disclosure.

[0009] Figures 49 to 54 An embodiment of a seat assembly including a lower leg support component is illustrated in accordance with the teachings of this disclosure.

[0010] Figures 55 to 61 An embodiment of a seat assembly including a lower leg support component is illustrated in accordance with the teachings of this disclosure. Detailed description Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. Numerous specific details are set forth in the following detailed description in order to provide a thorough understanding of the various embodiments described. However, it will be apparent to those skilled in the art that the various embodiments described can be practiced without these specific details. In other instances, well-known methods, processes, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the embodiments.

[0011] refer to Figure 1 The seat assembly 100 includes a seat base 102, a seat bottom 104 coupled to the seat base 102, and a seat back 106 rotatably coupled to at least one of the seat base 102 or the seat bottom 104. For example, the seat back 106 is directly rotatably coupled to the seat bottom 104 and indirectly rotatably coupled to the seat base 102 via the seat bottom 104. Alternatively, the seat back 106 is directly rotatably coupled to the seat base 102 and indirectly rotatably coupled to the seat bottom 104 via the seat base 102. A leg support assembly 108 (e.g., rotatably) is coupled to at least one of the seat bottom 104 or the seat base 102. A headrest assembly 110 is coupled (e.g., movably) to the seat back 106. The seat assembly 100 optionally includes a track assembly 112 coupled to the seat base 102. The track assembly 112 includes a fixed track 114 and a movable track 116 slidably engaged with the fixed track 114. Seat base 102 is mounted (e.g., rigidly mounted) to movable track 116. Fixed track 114 is coupled (e.g., fixed to and / or at least partially disposed on) mounting surface 118, such as the floor of a vehicle. Seat assembly 100 defines a longitudinal direction X, a lateral direction Y, and a vertical direction Z. Seat assembly 100 is shown in conjunction with occupant 22 and disposed in vehicle 20, but seat assembly 100 is not limited to vehicle applications.

[0012] Seat assembly 100 optionally includes one or more actuator assemblies 120, such as a tilt adjuster 122 (e.g., a powered / mechanical tilt adjuster) rotatably coupled to seat back 106 and seat bottom 104 and / or seat base 102, a track adjuster 124 adjusting the position of movable track 116 relative to fixed track 114, a seat bottom adjuster 126 adjusting the position of seat bottom 104 relative to seat base 102, a calf support adjuster 128 adjusting the position of leg support assembly 108 relative to seat bottom 104, a headrest adjuster 130 adjusting the position of headrest assembly 110 relative to seat back 106, or combinations thereof. Seat assembly 100 optionally includes or is connected to an electronic controller 132, the electronic controller 132 including a processor 134 and a memory 136. Electronic controller 132 is operatively coupled (e.g., electrically connected) to one or more actuator assemblies 120 to at least partially control their operation.

[0013] A track adjuster 124 is operatively coupled to a fixed track 114 and a movable track 116 to move the movable track 116 along the fixed track 114. The track adjuster 124 optionally includes a track adjuster motor 140, a track adjuster gearbox 142, and a track adjuster spindle 144. The track adjuster spindle 144 is fixed to either the fixed track 114 or the movable track 116. The track adjuster motor 140 and the track adjuster gearbox 142 are coupled (e.g., mounted) to the movable track 116. The track adjuster motor 140 is operatively coupled to the track adjuster spindle 144 via the track adjuster gearbox 142, such that operation of the track adjuster motor 140 causes movement of the track adjuster gearbox 142 and the movable track 116 along the track adjuster spindle 144 in the longitudinal direction X.

[0014] One or more actuator assemblies 120 are operable to move the seat assembly 100 to and between multiple positions, such as a design position, a tilt position, a raised position, an entry position (e.g., an easy-access position), and / or a cargo position (e.g., a folded position). Optionally, the tilt position is a zero-gravity position that distributes the weight of the occupant's body more evenly across the surface of the seat assembly 100 (e.g., the padding attached to the seat back 106 and seat bottom 104) compared to the design position, where most (e.g., the majority) of the weight may be applied through the occupant's spine to a relatively small area of ​​the seat assembly 100 (e.g., a portion of the padding attached to the seat bottom 104).

[0015] refer to Figures 2-6The seat assembly 200 is shown having a seat bottom adjuster 226, which is coupled to a seat base 202 and a seat bottom 204 to adjust the angle of the seat bottom 204 relative to the seat base 202. The seat assembly 200 includes a seat back 206, which is rotatably coupled to the seat bottom 204, for example via a tilt adjuster 122. The seat base 202 is coupled to a track assembly 112. Optionally, the seat bottom adjuster 226 is configured to function as... Figure 1 Seat bottom adjuster 126.

[0016] refer to Figure 4 The seat bottom adjuster 226 is illustrated as having a seat bottom adjuster motor 250, a seat bottom adjuster gearbox 252 operatively coupled to the seat bottom adjuster motor 250, and a seat bottom adjuster spindle 254 engaged with the seat bottom adjuster gearbox 252. The seat bottom adjuster gearbox 252 includes, for example, a nut 256 operatively coupled to the seat bottom adjuster motor 250 and the seat bottom adjuster spindle 254, such that operation of the seat bottom adjuster motor 250 causes the nut 256 to move the seat bottom adjuster spindle 254 up and down, which causes the seat bottom 204 to move (e.g., rotate about the rear axis 204A of the seat bottom).

[0017] Optionally, the seat bottom adjuster motor 250 includes the same configuration as the track adjuster motor 140. Figure 1 Additionally or alternatively, the seat bottom adjuster gearbox 252 may optionally include a track adjuster gearbox 142. Figure 1 The same configuration. Using motors, gearboxes, or other components with the same configuration can, for example, reduce design complexity, assembly complexity, or both.

[0018] refer to Figure 5 The seat bottom adjuster main shaft 254 includes a main shaft axis 254A, a main shaft tip 254B, and a main shaft bottom end 254C. The main shaft axis 254A extends from the main shaft tip 254B to the main shaft bottom end 254C. The main shaft tip 254B is coupled to the seat base 202, allowing the seat bottom adjuster main shaft 254 to rotate about a transverse axis 202A perpendicular to the main shaft axis 254A. The transverse axis 202A is, for example, fixed relative to the seat base 202, parallel to the transverse direction Y, and / or in front of and at a higher height than the rear axis 204A of the seat bottom.

[0019] The seat bottom adjuster 226 is shown with a motor bracket 260 extending in the lateral direction Y between opposite sides of the seat bottom 204 and coupled to the opposite sides of the seat bottom 204. A seat bottom adjuster motor 250 is coupled to the motor bracket 260. A seat bottom adjuster gearbox 252 is mounted, for example, to a first lateral end of the motor bracket 260 and coupled to the seat bottom adjuster motor 250 via a first shaft 258 (e.g., a flexible drive shaft). Figure 4 ). Optionally, such as Figure 4 As shown, a second seat bottom adjuster gearbox 253 is mounted to the second lateral end of the motor bracket 260 and is operatively coupled to the seat bottom adjuster motor 250, for example, via a second shaft 259. The second seat bottom adjuster gearbox 253 is operatively coupled to a second seat bottom adjuster main shaft 255 arranged opposite to the seat bottom adjuster main shaft 254 (e.g., the first seat bottom adjuster main shaft). Optionally, the seat base 202 includes a curved slot 262, and a portion of the motor bracket 260 extends into and / or through the curved slot 262 to engage with and / or guide movement of the seat bottom 204 (e.g., during operation of the seat bottom adjuster motor). The radius of the curved slot 262 is defined between the curved slot 262 and the rear axis 204A of the seat bottom.

[0020] Connecting the seat bottom adjuster gearbox 252 below the top of the main shaft 254B to the seat bottom adjuster main shaft 254 limits the possibility of bending of the seat bottom adjuster main shaft 254, such as when a large downward force is applied to the seat bottom 204 (e.g., in the case of a frontal vehicle collision). For example, under the application of a large downward force, the seat bottom 204 is pulled substantially downward on the seat bottom adjuster main shaft 254, which limits the force applied thereto and / or the force applied parallel to the main shaft axis 254A to a larger extent than in other designs. This configuration allows, for example, a smaller diameter 254D of the seat bottom adjuster main shaft 254 than in other designs, and / or a smaller size of the seat bottom adjuster gearbox 252 than in other designs, which can reduce complexity and / or weight. Optionally, the diameter of the seat bottom adjuster main shaft 254 is at least 5 mm and less than or equal to 10 mm, for example, at least 5.5 mm and less than 8.5 mm.

[0021] The seat bottom adjuster motor 250 is coupled to the seat bottom 204 such that the seat bottom adjuster motor 250 rotates together with the seat bottom 204 (e.g., about the rear axis 204A of the seat bottom). For example, the seat bottom adjuster motor 250 is operable to rotate the seat bottom 204 to... Figure 2 The design location shown and Figure 3 The tilt position shown and in Figure 2The design location shown and Figure 3 Rotation between the indicated tilt positions. A seat bottom adjuster 226 is attached to the seat bottom 204 to adjust the angle 226A of the seat bottom 204 by at least 10 degrees and less than or equal to 30 degrees, for example, between the design position and the tilt position. Optionally, the seat bottom adjuster 226 is attached to the seat bottom 204 to adjust the angle 226A of the seat bottom 204 (… Figure 6 The seat can be adjusted by at least 11 degrees and less than or equal to 15 degrees, for example, 12 degrees. Optionally, the angle 226A of the seat bottom 204 corresponds to the thigh angle of the occupant 22. Figure 1 ).

[0022] refer to Figures 7-11 The seat assembly 300 is shown having a seat bottom adjuster 326, which is coupled to the seat base 302 and the seat bottom 304 to adjust the angle and / or height of the seat bottom 304 relative to the seat base 302. Optionally, the seat bottom adjuster 326 is configured to function as... Figure 1 The seat bottom adjuster 126. The seat assembly 300 includes a seat back 306, which is rotatably coupled to the seat bottom 304, for example via a tilt adjuster 122. The seat base 302 is coupled to the track assembly 112. The seat bottom adjuster 326 is optionally configured as a height adjuster and is referred to herein as height adjuster 326.

[0023] In the example shown, the height adjuster 326 includes a first lever 350 rotatably coupled to a seat base 302, a main shaft 352 coupled to the seat base 302, a reciprocating element 354 operably engaged with the main shaft 352, and a second lever 356 rotatably coupled to the reciprocating element 354 and the seat bottom 304. The first lever 350 is operably coupled to a first height adjuster motor 358 to rotate the first lever 350. The reciprocating element 354 is operably coupled to a second height adjuster motor 360 to move the reciprocating element 354 longitudinally. Optionally, the reciprocating element 354 includes or is operably coupled to a gearbox (e.g., an adjuster gearbox, such as...). Figure 5 The seat bottom adjuster gearbox 252). The track assembly 112 includes a track adjuster 124, which includes a track adjuster motor 140, a track adjuster gearbox 142, and a track adjuster spindle 144 (see See Figure 1The track adjuster spindle 144 and the height adjuster spindle 352 are parallel to each other and / or parallel to the longitudinal direction X, and the spindle 352 is at a higher height than the track adjuster spindle 352 (e.g., at least indirectly mounted to the top of the movable track 116). The second height adjuster motor 360 is operable to move the reciprocating motion member 354 longitudinally along the spindle 352 to adjust the position of the front end 304B of the seat base 304. For example, operation of the second height adjuster motor 360 causes the spindle 352 to rotate (e.g., the spindle 352 does not translate), and the threaded engagement between the spindle 352 and the reciprocating motion member 354 causes the reciprocating motion member 354 to translate along the spindle 352 as the spindle 352 rotates.

[0024] Optionally, the seat assembly 300 includes a design location ( Figure 7 ), rising position ( Figure 8 ), tilt position ( Figure 9 ), enter location ( Figure 10 ), cargo loading position ( Figure 11 ), their combinations, and the intermediate positions between them. Electronic controller 132 ( Figure 1 It can be used with track adjuster motor 140 ( Figure 1 The first height adjuster motor 358, the second height adjuster motor 360, and the tilt adjuster 122 are operatively connected to move the seat assembly 300 to a design position, a raised position, a tilted position, an entry position, and a loading position, as well as between these positions. In the design position, the reciprocating motion member 354 is located near the front of the main shaft 352.

[0025] Remove seat assembly 300 from its design location ( Figure 7 Move to the elevated position ( Figure 8 This includes, for example, operating the first height adjuster motor 358 to rotate the first lever 350 (e.g., in...). Figure 7 (clockwise rotation); and, for example, via electronic controller 132, operating a second height adjuster motor 360 (e.g., to move the reciprocating motion member 354 backward to raise the front end 304B).

[0026] Remove seat assembly 300 from its design location ( Figure 7 Move to the tilt position ( Figure 9 This includes, for example, operating a second height adjuster motor 360 to move the reciprocating motion member 354 rearward and raise the front end 304B of the seat bottom 304. This moves the seat assembly 300 from its designed position ( Figure 7 Move to the tilt position ( Figure 9 Optionally, it does not include operating the first height adjuster motor 360.

[0027] Remove seat assembly 300 from its design location ( Figure 7 Move to the entry position ( Figure 10 This includes, for example, operating the first height adjuster motor 358 to raise the rear end 304C, and operating the track adjuster motor 140 to move the movable track 116. Figure 1 The seat back 306 is moved forward, and the tilt adjuster 122 is operated to rotate the seat back 306 forward. Alternatively, moving from the design position to the entry position does not involve operating the second height adjuster motor 360, and the second lever 356 rotates relative to the reciprocating motion member 354 as the seat bottom 304 moves, without operating the second height adjuster motor 360.

[0028] Remove seat assembly 300 from its design location ( Figure 7 Move to the loading position ( Figure 11 This includes, for example, operating a first height adjuster motor 358 to raise the rear end 304C, operating a second height adjuster motor 360 to move the reciprocating motion member 354 to the rear position and tilt the front end 304B downward, and operating a tilt adjuster 122 to rotate the seat back 306 forward (e.g., to a greater extent than the entry position and to a more horizontal position).

[0029] In the example shown, the reciprocating motion component 354 includes multiple positions along the main axis 352, such as the forward position ( Figure 7 ), rear position ( Figure 9 ) and one or more intermediate positions between the forward and backward positions ( Figure 8 In the forward position, the seat assembly 300 is in the designed position and the seat assembly 300 is in the engaged position. In the rearward position, the seat assembly 300 is in the loading position and the seat assembly 300 is in the tilted position. In the intermediate position, the seat assembly 300 is in the raised position.

[0030] In the example shown, a first lever 350 is rotatable about axis 350A, including a first lever first segment 350B and a first lever second segment 350C, which are arranged in an L-shape with the first lever first segment 350B. The first lever first segment 350B is rotatably connected to the seat base 304, for example at or near the rear end 304C, and is longer than the first lever second segment 350C. The first lever second segment 350C is operatively connected to a first height adjuster motor 358 such that operation of the first height adjuster motor 358 causes the first lever second segment 350C to rotate about axis 350A. For a given actuation of the first height adjuster motor 358, the greater length of the first lever first segment 350B results in greater movement (e.g., height change) of the seat base 304.

[0031] The first segment 350B of the first lever is rotatably connected to the seat bottom 304 at the rear axis 304A of the seat bottom. The seat bottom 304 is rotatable about axis 350A, such as via rotation of the first lever 350. The first lever 350 is connected to the seat bottom 304, the seat base 302, and the first height adjuster motor 358, such that rotation of the first lever 350 via the first height adjuster motor 358 causes translation (e.g., longitudinal and vertical movement) of the rear axis 304A of the seat bottom to adjust the height of the rear portion 304C of the seat bottom 304.

[0032] A first height adjuster motor 358 is rotatably connected to the seat base 302 at a motor shaft 358A and operably connected to a first motor spindle 362, which is operably connected to a first motor gearbox 364. Operation of the first height adjuster motor 358 causes the first motor spindle 362 to rotate about a spindle axis 362A extending along the length of the first motor spindle 362, and the first motor gearbox 364 moves along the first motor spindle 362, resulting in rotation of the first lever 350. A first motor gearbox 364 is rotatably connected to the first lever 350 at a gearbox axis 364A, which rotates together with the first lever 350 about an axis 350A. The motor shaft 358A is fixed relative to the seat base 302.

[0033] The second rod 356 is rotatable relative to the reciprocating member 354 about an axis 356A parallel to the transverse direction Y. The second rod 356 includes a first segment 356B and a second segment 356C angled relative to the first segment 356B. The angle between the first segment 356B and the second segment 356C is greater than 0 degrees and less than 45 degrees, for example, greater than or equal to 10 degrees and less than or equal to 30 degrees. The first segment 356B is connected to the seat bottom 304. The second segment 356C is connected to the reciprocating member 354. The second rod 356 is rotatable relative to the seat bottom 304 about an axis 356D.

[0034] Optionally, the height adjuster 326 includes a second set of first rods 350, main shaft 352, reciprocating motion member 354 and second rod 356 located on the second lateral side of the seat base 302 and having a mirror configuration.

[0035] refer to Figures 12 to 14 The diagram illustrates the design positions of the seat assembly 300, its reclining position, and its cargo-carrying position, wherein the seat back 306 is optionally (e.g., rotatably) directly coupled to the seat base 302, rather than directly coupled to the seat bottom 304. This configuration allows, for example, the seat assembly 300 to be positioned in the cargo-carrying position (…). Figure 14 )Compare Figure 11The construction shown is more compact. Figure 12 As shown in the design, the reciprocating motion component 354 is located near the front of the main shaft 352, and the first rod 350 is angled backward, similar to... Figure 7 The construction of the seat assembly 300. Figure 12 The design location was moved to Figure 13 The tilt position includes moving the reciprocating motion member 354 rearward to tilt the front end 304B of the seat bottom 304 upward and / or includes actuating the tilt adjuster 122 to tilt the seat back 306 rearward. The seat assembly 300 is then moved from... Figure 12 The design location was moved to Figure 13 The tilt position optionally does not include rotating the first lever 350. The seat assembly 300 is then moved from... Figure 12 The design location was moved to Figure 14 The loading position includes, for example, rotating the first lever 350 forward while the reciprocating motion member 354 remains close to the front of the main shaft 352, and rotating the second lever 356 forward, thereby moving the seat bottom 304 further forward and to a position greater than... Figure 11 The example configuration shows a lower position. Since the tilt adjuster 122 does not translate relative to the seat base 302, the seat back 306 is also in a lower position than... Figure 11 The seat assembly 300 is positioned at a lower location in the exemplary configuration. The lower position of the seat bottom 304 and seat back 306 reduces the effective space occupied by the seat assembly 300, which increases the storage space around the seat assembly 300 (e.g., in a vehicle). In this configuration, the movement of the seat back 306 can be independent of the movement of the seat bottom 304, but the electronic controller 132 can coordinate the synchronous movement of the seat back 306 and the seat bottom 304 to move the seat assembly 300 to the desired position.

[0036] refer to Figures 15-18 The seat assembly 400 is shown having a seat bottom adjuster 426, which is coupled to the seat base 402 and the seat bottom 404 to adjust the angle and / or height of the seat bottom 404 relative to the seat base 402. Optionally, the seat bottom adjuster 426 is configured to function as... Figure 1 The seat bottom adjuster 126. The seat assembly 400 includes a seat back 406, which is rotatably coupled to the seat bottom 404, for example via a tilt adjuster 122. The seat base 402 is coupled to the track assembly 112. The seat bottom adjuster 426 is optionally configured as a height adjuster and is referred to herein as height adjuster 426.

[0037] In the example shown, the height adjuster 426 includes a first rod 450 rotatably connected to the seat base 402 via a first tilt adjuster 458, and a second rod 456 rotatably connected to the seat base 402 via a second tilt adjuster 460. The first rod 450 is rotatably connected to the seat bottom 404 at a seat bottom axis 404A. The height adjuster 426 includes a third rod 462 rotatably connected to the distal end of the second rod 456 at axis 462A and rotatably connected to the seat bottom 404 at axis 462B.

[0038] The first tilt adjuster 458 and the second tilt adjuster 460 are electrically operated tilt adjusters. For example, the first tilt adjuster 458 includes or is coupled to a motor, and / or the second tilt adjuster 460 includes or is coupled to a motor. Electronic controller 132 ( Figure 1 For example, it is configured to control the operation of a first tilt adjuster 458 and a second tilt adjuster 460. The seat assembly 400 includes a tilt adjuster 122 (e.g., a third tilt adjuster) that rotatably connects a seat back 406 to a seat base 404 or seat seat 402. In the example shown, the tilt adjuster 122 is an electrically operated tilt adjuster, and an electronic controller 132 is configured to control the operation of all tilt adjusters 122, 458, and 460 to move the seat assembly 400 to a designed position. Figure 15 ), rising position ( Figure 17 ), tilt position ( Figure 18 Enter position ( Figure 19 ) and cargo loading location ( Figure 20 ) and move between these positions.

[0039] refer to Figure 15 With the seat assembly 400 in the designed position, the first lever 450 is set at a first lever design angle 450A, and the second lever 456 is set at a second lever design angle 456A. ​​Optionally, the first lever design angle 450A is at least 150 degrees and less than or equal to 180 degrees, and / or the second lever design angle 456A is at least -10 degrees and less than or equal to 20 degrees. The second lever design angle 456A is... Figure 15 The angle shown is 0 degrees. The first rod design angle 450°A and the second rod design angle 456°A are, for example, measured relative to the front in the longitudinal X direction.

[0040] Figure 16A and Figure 16B This is an exploded view of seat assembly 400. (See diagram below.) Figure 16BAs shown, the height adjuster 426 optionally includes a second set of levers on opposite sides of the seat base 402. The second set of levers includes a fourth lever 451, a fifth lever 457, and a sixth lever 463, which are respectively mirror images of the first lever 450, the second lever 456, and the third lever 462 and / or connected to the first lever 450, the second lever 456, and the third lever 462 via corresponding lateral members (e.g., a transverse tube or shaft extending in the lateral direction). Optionally, a first tilt adjuster 458 is operatively connected to the first lever 450 and the fourth lever 451, or the height adjuster 426 includes an additional / third tilt adjuster connected to the fourth lever 451. Optionally, a second tilt adjuster 460 is operatively connected to the second lever 456 and the fifth lever 457, or the height adjuster 426 includes an additional / fourth tilt adjuster connected to the fifth lever 457.

[0041] refer to Figure 17 With the seat assembly 400 in the raised position, the first lever 450 is set at a first lever elevation angle 450B that is less than the first lever design angle 450A, and / or the second lever 456 is set at a second lever elevation angle 456B that is greater than the second lever design angle 456A. ​​Optionally, the first lever elevation angle 450B is at least 90 degrees and less than or equal to 150 degrees, and / or the second lever elevation angle 456B is at least 15 degrees and less than or equal to 60 degrees. In the raised position of the seat assembly 400, the seat bottom 404 is at a greater height above the seat base 402 and is further forward in the longitudinal direction X than in the design position.

[0042] refer to Figure 18 The seat assembly 400 is in an inclined position, with the first rod 450 set at a first rod inclination angle 450C, and the second rod 456 set at a second rod inclination angle 456C. Optionally, the second rod inclination angle 456C is greater than the second rod design angle 456A, the first rod inclination angle 450C is at least 150 degrees and less than or equal to 180 degrees, and / or the second rod inclination angle 456C is at least 30 degrees and less than or equal to 60 degrees. Optionally, the seat assembly 400 is moved from the design position ( Figure 15 Moving to the tilt position includes actuating the second tilt adjuster 460 but not actuating the first tilt adjuster 458. In the tilt position of the seat assembly 400, the seat bottom 404 is angled such that the front end 404B of the seat bottom 404 is higher than the height of the seat base 402 in the designed position. Additionally or alternatively, the seat base 402 is forward in the longitudinal direction X than in the designed position, for example, via movement of the track assembly 112. Additionally or alternatively, the seat back 406 is angled rearward from the designed position, which is caused by the tilt of the seat bottom 404 and / or by actuation of the tilt adjuster 122. Figure 18In this example, the tilt of the seat back 406 is provided via the tilt of the seat bottom 404. In other configurations, the tilt adjuster 122 is actuated to adjust the position of the seat back 406 relative to the seat bottom 404.

[0043] refer to Figure 19 With the seat assembly 400 in the engaged position, the first lever 450 is set at a first lever engagement angle 450D, and the second lever 456 is set at a second lever engagement angle 456D. Optionally, the first lever engagement angle 450D is less than the first lever design angle 450A and the first lever tilt angle 450C, the first lever third angle is at least 60 degrees and less than or equal to 110 degrees; and the second lever engagement angle 456D is at least -10 degrees and less than or equal to 20 degrees. Optionally, moving the seat assembly 400 from the design position to the engaged position includes actuating the tilt adjuster 122 to tilt the seat back 406 forward, actuating the track assembly 112 to move the seat base 402 forward, and / or actuating the first tilt adjuster 458 to rotate the first lever 450 to move the seat bottom 404 upward and forward, some or all of which are controlled by the electronic controller 132. Figure 1 Control. Moving the seat assembly 400 from the design position to the entry position may optionally not involve actuating the second tilt adjuster 460. For example, actuating the first tilt adjuster 458 causes the third lever 462 to rotate about axis 462A, which remains fixed relative to the seat base 402, and about axis 462B, thereby allowing the front end 404B of the seat bottom 404 to move forward relative to the seat base 402.

[0044] refer to Figure 20 When the seat assembly 400 is in the loading position, the seat back 406 is rotated forward further than in the entry position, and the first lever 450 and the second lever 456 are optionally in the same position as in the entry position, such that the first lever loading angle 450E of the first lever 450 is equal to the first lever entry angle 450D, and the second lever loading angle 456E of the second lever 456 is equal to the second lever entry angle 456D.

[0045] Optionally, one or both of the first tilt adjuster 458 or the second tilt adjuster 460 may be replaced by a motor assembly comprising a gearbox providing high gear reduction and coupled to a spur gear. The spur gear meshes with a sector gear coupled to the first lever 450 or the second lever 456, such that operation of the motor assembly rotates the spur gear, which in turn rotates the sector gear to rotate the first lever 450 or the second lever 456. The motor assembly is not reversible.

[0046] refer to Figures 21A-33The seat assembly 500 is shown as having a seat base 502, a seat bottom 504 coupled to the seat base 502, a seat back 506 rotatably coupled to at least one of the seat base 502 or the seat bottom 504, and an armrest 570 rotatably coupled to the seat back 506. The seat base 502 is coupled to the track assembly 112 ( Figures 21A-21C ).

[0047] The armrest 570 includes a base 572 rotatably connected to the seat back 506, and an arm 574 rotatably connected to the base 572. The arm 574 includes a designed position ( Figures 21A-21C ), rising position ( Figures 22A-22C ), lower position ( Figures 23A-23C ) and folding position ( Figures 24A-24C Optionally, in the design position, the arm angle 570A is at least -5 degrees and less than or equal to 5 degrees; in the raised position, the arm angle 570A is at least 10 degrees and less than or equal to 25 degrees; in the lowered position, the arm angle 570A is less than or equal to -10 degrees and at least -25 degrees; and / or in the folded position, the arm angle 570A is less than or equal to -40 degrees and at least -70 degrees, for example, less than or equal to -50 degrees and at least -60 degrees. The arm angle 570A is measured relative to the front in the longitudinal direction X.

[0048] refer to Figures 25-28 The seat assembly 500 also includes an armrest motor 576 and a housing 577. The armrest motor 576 is coupled to the seat back 506 and operatively coupled to a base 572, such that operation of the armrest motor 576 causes rotation of the base 572. The motor 576 is at least partially housed within the housing 577. The housing 577 is coupled to or integrally formed with the seat back 506. In the illustrated example, the housing 577 is rigidly coupled to the outer surface of the frame of the seat back 506. The seat assembly 500 (e.g., armrest 570) includes a gear segment 578. The gear segment 578 is fixed relative to the seat back 506 and the housing 577 such that operation of the armrest motor 576 does not cause rotation of the gear segment 578. In the illustrated example, the gear segment 578 is integrally formed with the housing 577.

[0049] refer to Figures 29A-33 The armrest 570 includes a first gear 580, which is rotatably connected to the base 572 and meshes with a gear segment 578. The armrest 570 includes a second gear 582 connected to the arm 574 and meshing with the first gear 580, such that rotation of the base 572 in a first rotational direction causes the arm 574 to rotate in a second rotational direction opposite to the first rotational direction.

[0050] refer to Figure 34 and Figure 35The armrest motor 576 includes a drive shaft 584 or is operatively coupled to the drive shaft 584, which engages with a base 572 and defines a motor axis 576A fixed relative to the seat back 506. The motor axis 576A is parallel to the lateral direction Y. Optionally, a gear segment 578 is centered on the motor axis 576A, and is rigidly fixed relative to or integrally formed with the seat back 506. The housing 577 includes a protrusion 586 (e.g., a hollow protrusion) extending in the lateral direction Y, from which the gear segment 578 extends radially outward. A portion of the protrusion 586 is disposed in the base 572, and the gear segment 578 limits the depth to which the protrusion 586 is inserted into the base 572. And / or the drive shaft 584 extends through the protrusion 586 and into the base 572. Optionally, the drive shaft 584 is engaged via a toothed or splined engagement 588 (…). Figure 33 The drive shaft 584 is connected to the base 572, such that the base 572 is rotated by the rotation of the motor 576 via a toothed or splined engagement 588. Fasteners 589 (e.g., screws, bolts, etc.) extend into the distal end of the drive shaft 584 to hold the housing 577 on the protrusion 586.

[0051] Refer again Figures 29A-33 The first gear 580 is rotatable about a first axis 580A, which moves together with the base 572 about a motor axis 576A. The second gear 582 rotates together with the arm 574 about a second axis 574A, which rotates about the motor axis 576A. The first axis 580A, the motor axis 576A, and the second axis 574A are parallel to each other and / or parallel to the lateral direction Y of the seat assembly 500.

[0052] The armrest motor 576 is operable to move the arm 574 to a designed position, a raised position, a lowered position, and a folded position, as well as to move it between these positions. The designed position is... Figures 21A-21C and Figures 26-29B As shown in the diagram. The elevated position is in Figures 22A-22C and Figures 30A-30B As shown in the image. The lower position is... Figures 23A-23C and Figure 31 As shown in the image. The folding position is in... Figures 24A-24C and Figure 32 As shown in the image.

[0053] Moving arm 574 from its designed position to its raised position includes, for example, operating armrest motor 576 to cause base 572 to move in a first direction (e.g., Figure 29A Rotate counterclockwise to make arm 574 rotate in the second direction (e.g., Figure 29AThe arm rotates clockwise, which at least partially moves the distal end 574B of the arm 574 upward and the proximal end 574C of the arm 574 downward and the second axis 574A downward.

[0054] Moving arm 574 from its designed position to its lowered position includes, for example, operating arm motor 576 to cause base 572 to move in a second direction (e.g., Figure 29A Rotate clockwise to make arm 574 rotate in the first direction (e.g., clockwise) so that arm 574 is in the first direction (e.g., clockwise). Figure 29A The armrest 570 rotates counterclockwise, at least partially moving the distal end 574B downward and the proximal end 574C upward. Further operation of the armrest motor 576, rotating the base 572 in a second direction, continues to move the distal end 574B downward and the proximal end 574C upward, for example, until a folded position is reached. Moving the proximal end 574C upward to reach the folded position facilitates folding, for example, by reducing the length of the armrest 570. In contrast, for other designs, such as those that do not adjust the height of the proximal end of the arm upward, the rotation of the arm is restricted, for example, or more significantly, due to contact with the seat bottom or seat assembly or other parts of the vehicle.

[0055] Now for reference Figure 36 and Figure 37 The seat assembly 600 is shown as having a seat back 606 and a headrest assembly 610 coupled (e.g., adjustable) to the seat back 606. Optionally, the seat back 606 is coupled to at least one of the seat base or seat bottom (such as...). Figure 1 The seat base 102 or seat bottom 104 is rotatably coupled. Optionally, the headrest assembly 610 is configured to function as... Figure 1 The headrest component 110.

[0056] refer to Figures 38-43 The headrest assembly 610 is illustrated as having a mounting post 700, a mounting bracket 702 fixed to the mounting post 700, an upper rod 704 rotatably connected to the mounting bracket 702, and a lower rod 706 rotatably connected to the mounting bracket 702. Figures 40-43 An adjustable bracket 708 is rotatably connected to the upper rod 704 and the lower rod 706, and a headrest pad bracket 710 is slidably connected to the adjustable bracket 708. Mounting posts 700 may optionally be configured as a pair of mounting posts. A headrest pad 712 may optionally be connected to the headrest pad bracket 710.

[0057] refer to Figure 42The headrest assembly 610 is further illustrated as having a first headrest motor assembly 720, which is operatively coupled to a mounting bracket 702 and an upper rod 704 to allow the upper rod 704 to rotate relative to the mounting bracket 702. The first headrest motor assembly 720 includes a first headrest motor 722 coupled to the mounting bracket 702, a first nut 724 (e.g., a first headrest nut) coupled to the upper rod 704, and a first spindle 726 (e.g., a first headrest spindle). The first spindle 726 defines a first spindle axis 726A, is operatively coupled to the first headrest motor 722, and engages with the first nut 724 such that operation of the first headrest motor 722 causes the first spindle 726 to rotate about the first spindle axis 726A, which in turn moves the first nut 724 along the first spindle 726 to allow the upper rod 704 to rotate about an upper rod axis 704A located near the top of the mounting bracket 702. The upper rod axis is parallel to the lateral direction Y. Rotating the upper lever 704 moves the adjustable bracket 708 and the headrest pad bracket 710 connected thereto, so as to adjust the position of the headrest pad bracket 710 (e.g., to improve support for the occupant's head).

[0058] The headrest assembly 610 is also shown having a second headrest motor assembly 730 operatively coupled to the adjustable bracket 708 and the headrest pad bracket 710 to allow the headrest pad bracket 710 to slide relative to the adjustable bracket 708, thereby adjusting the position of the headrest pad bracket 710 substantially in the vertical direction Z (e.g., depending on the angle between the seat back 606 and the adjustable bracket 708 relative to the vertical direction Z, if any). The second headrest motor assembly 730 includes a second headrest motor 732 coupled to the adjustable bracket 708, a second nut 734 coupled to the headrest pad bracket 710, and a second spindle 736. The second spindle 736 defines a second spindle axis 736A and is operably connected to the second headrest motor 732 and engages with the second nut 734, such that operation of the second headrest motor 732 causes the second spindle 736 to rotate about the second spindle axis 736A and causes the second nut 734 to translate along the second spindle 736, allowing the headrest cushion support 710 to slide relative to the adjustable support 708. The first spindle axis 726A and the second spindle axis 736A are parallel to the XZ plane. Figure 42 In the configuration shown, the first spindle axis 726A and the second spindle axis 736A are substantially vertical.

[0059] Headrest assembly 610 includes a retracted position ( Figure 36 , Figures 38-40 , Figure 44 and Figure 45 ), extension position ( Figure 37 , Figures 41-43 , Figure 47 and Figure 48), and one or more partial extension locations ( Figure 46 The first headrest motor 722 is operable to move the headrest assembly 610 to a retracted position, an extended position, and one or more partially extended positions, and between the retracted position, the extended position, and one or more partially extended positions. The extended position is in front of and below the retracted position. One or more partially extended positions are located between the retracted position and the extended position. Optionally, in the extended position, the adjustable bracket 708 and the headrest pad bracket 710 are angled forward from the retracted position (e.g., about an axis parallel to the lateral direction Y), such that the angle between the adjustable bracket 708 and the headrest pad bracket 710 relative to the mounting bracket 702 (and the mounting post 700) increases. For example, the difference 718 between the retracted position angle 714 and the extended position angle 716 (e.g., of the headrest pad bracket 710) is at least 5 degrees and less than or equal to 15 degrees (see example). Figure 48 For example, at least 6 degrees and less than or equal to 7 degrees. Optionally, the headrest pad support 710 is at least partially angled backward in the retracted position (e.g., the retracted position angle 714 is greater than 90 degrees, so the headrest pad support 710 is angled backward relative to the vertical direction). Additionally or alternatively, the headrest pad support 710 is at least partially angled forward in the extended position (e.g., the extended position angle 716 is less than 90 degrees, so the headrest pad support 710 is angled forward in the vertical direction).

[0060] In a configuration with a tiltable headrest support 710, the headrest support 710 moves forward and tilts downward in the longitudinal direction X as it moves toward an extended position (e.g., the second upper pivot 742 moves further forward in the longitudinal direction than the second lower pivot 746). For example, this tilting motion provides increased support for the occupant's head, such as for a shorter occupant in a tilted (e.g., zero-gravity) position of the seat assembly 600.

[0061] The headrest padding support 710 includes a raised position ( Figure 44 , Figure 46 , Figure 47 ), lower position ( Figure 48 ), and one or more intermediate positions between them ( Figure 45 The second headrest motor 732 is operable to move the headrest cushion support 710 to a raised position, a lowered position, and one or more intermediate positions, and between the raised position, lowered position, and one or more intermediate positions, such as wherein the headrest assembly 610 is in any of a retracted position, an extended position, or one or more partially extended positions. Optionally, the headrest assembly 610 is configured such that, in the lowered position, the headrest cushion support 710 is in a direction perpendicular to the seat back 606 (e.g., Figure 46It overlaps with the seat back 606 in the longitudinal direction X).

[0062] refer to Figure 44 and Figure 45 In the illustrated example, the upper rod 704 is rotatably connected to the mounting bracket 702 at a first upper rod pivot 740 defining axis 704A, and rotatably connected to the adjustable bracket 708 at a second upper rod pivot 742. The lower rod 706 is rotatably connected to the mounting bracket 702 at a first lower rod pivot 744, and rotatably connected to the adjustable bracket 708 at a second lower rod pivot 746. In the illustrated example, the first upper rod pivot 740 is below the second upper rod pivot 742 (e.g., at a lower height than the second upper rod pivot 742), the first lower rod pivot 744 is below the second lower rod pivot 746, the second lower rod pivot 746 is in front of the first upper rod pivot 740 and the second upper rod pivot 742, and the second lower rod pivot 746 is in front of the first lower rod pivot 744. With the headrest assembly 610 in the retracted position ( Figure 44 and Figure 45 The second lower lever pivot 746 is above the first upper lever pivot 740 (e.g., at a higher height than the first upper lever pivot 740). This is when the headrest assembly 610 is in the extended position ( Figure 47 and Figure 48 The second lower pivot 746 is located below the first upper pivot 740 (e.g., at a lower height than the first upper pivot 740). Regarding the relative positions of pivots 740-746, the first pivot being above or below the second pivot includes being at a higher or lower height than the second pivot, but does not necessarily mean that the first and second pivots are directly above or below each other. Some or all of pivots 740-746 define corresponding axes (e.g., rotation axes) parallel to the lateral direction Y.

[0063] refer to Figure 48The distance 740D between the first upper pivot 740 and the second upper pivot 742 is greater than the distance 744D between the first lower pivot 744 and the second lower pivot 746. For example, but not limited to, the first distance 740D is 115mm to 120mm (inclusive of the endpoints), and the second distance 744D is 105mm to 114mm (inclusive of the endpoints). The difference between the distances 740D and 744D allows for an increased range of motion in the headrest assembly 610 to provide a greater number of comfortable positions for the occupant. For example, the position of the occupant's head in the seat assembly 600 can vary depending on the occupant's height and / or desired body position (e.g., fully reclined with head back, fully reclined with head forward for viewing or reading, partially reclined, etc.), and the headrest assembly 610 can be positioned to provide increased support and / or increased comfort relative to other designs.

[0064] refer to Figures 49-54 The seat assembly 800 is shown as having a seat base 802, a seat bottom 804 coupled to the seat base 802, a seat back 806 rotatably coupled to at least one of the seat base 802 or the seat bottom 804, and a leg support assembly 808 adjustablely coupled to the seat bottom 804. Optionally, the seat base 802 is coupled to the track assembly 112. Figure 1 ), and / or the calf support assembly 808 is configured to serve as Figure 1 Lower leg support assembly 108. Lower leg support assembly 808 is adjustable in various positions of seat assembly 800, such as in the designed position ( Figure 49 ) and / or tilt position ( Figure 50 For example, a portion of a zero-gravity location.

[0065] refer to Figures 51-53 The calf support assembly 808 includes a calf support motor 950, a calf support 952, and a calf support link 954, which adjustably connects the calf support 952 to the seat base 804. The calf support link 954 includes a first link 960 rotatably connected to the seat base 804, a second link 962 rotatably connected to the seat base 804, a third link 964 rotatably connected to the first link 960 and the second link 962, a fourth link 966 rotatably connected to the third link 964 and the calf support 952, and / or a fifth link 968 rotatably connected to the third link 964 and the calf support 952.

[0066] The first lever 960 includes a first end 960B of the first lever rotatably connected to the seat bottom 804 at the first lever axis 960A, and a second end 960C of the first lever opposite to the first end 960B and connected to the third lever 964.

[0067] The second rod 962 includes a first end 962B of the second rod rotatably connected to the seat bottom 804 at the second rod axis 962A, and a second end 962C of the second rod opposite to the first end 962B and connected to the third rod 964.

[0068] The third rod 964 includes a first end 964B, which is rotatably connected to the first rod 960 at a first axis 964A of the third rod located at the second end 960C of the first rod, and includes a second end 964C, which is opposite to the first end 964B of the third rod and is rotatably connected to the second end 962C of the second rod at a second axis 964D of the third rod.

[0069] The fourth rod 966 includes a first end 966B of the fourth rod that is rotatably connected to the third rod 964 at a fourth rod shaft 966A disposed between the first end 964B and the second end 964C of the third rod, and includes a second end 966C of the fourth rod that is opposite to the first end 966B of the fourth rod and rotatably connected to the lower leg support 952.

[0070] The fifth link 968 includes a first end 968B of the fifth link, rotatably connected to the second end 964C of the third link at the second axis 964D, and a second end 968C of the fifth link, rotatably connected to the lower leg support 952 at the fifth link axis 968A, opposite to the first end 968B and offset from the second end 966C of the fourth link. For example, the second link 962 and the fifth link 968 are connected to the second end 964C of the third link at the second axis 964D.

[0071] The calf support link 954 includes a first gear 970, which is connected (e.g., fixedly connected) to the first link 960 at the second end 960C of the first link, and / or centered on the first axis 964A of the third link. The calf support link 954 includes a second gear 972, which is connected (e.g., fixedly connected) to the fourth link 966 at the first end 966B of the fourth link, and / or centered on the axis 966A of the fourth link. The second gear 972 engages with the first gear 970 (e.g., via tooth engagement) such that rotation of the first link 960 in a first direction causes rotation of the fourth link 966 in a second direction opposite to the first direction.

[0072] In the example shown, the calf support motor 950 is operatively connected to the first rod 960, for example, via a calf support spindle 956 of the first rod 960 connected between a first end 960B and a second end 960C. For example, the calf support motor 950 is operatively connected to the first rod 960 via the calf support spindle 956 such that operation of the calf support motor 950 causes translation of the calf support spindle 956 and rotation of the first rod 960 about its axis 960A. Optionally, the calf support motor 950 is mounted to the seat base 804.

[0073] The operation of the calf support motor 950 causes the calf support main shaft 956 to translate, which causes the first rod 960 to rotate about the first rod axis 960A, which causes the rods 962-968 to move so that the calf support 952 moves to the retracted position. Figure 49 and Figure 51 ), rising position ( Figure 52 ) and extended position ( Figure 53 ), and in the retracted position ( Figure 49 and Figure 51 ), rising position ( Figure 52 ) and extended position ( Figure 53 Moving between positions. For example, moving the calf support 952 from the retracted position toward the raised and extended positions, or moving it to the raised and extended positions, includes operating the calf support motor 950 to move the calf support spindle 956 forward, thereby rotating the first rod 960 (e.g., in...). Figure 51 The first lever 960 rotates counterclockwise, causing the third lever 964 to move forward and upward, thereby moving the lower leg support 952 forward and upward. As the first lever 960 rotates, the first gear 970 (e.g., about the first lever axis 960A) rotates, which causes the second gear 972 and the fourth lever 966 to rotate about the fourth lever axis 966A (e.g., ...). Figure 51 (clockwise), thereby causing the lower leg support assembly 952 to tilt outward and upward from its approximately vertical orientation in the retracted position (e.g., clockwise). Figure 51 The lower leg support 952 is rotated (counter-clockwise) to a more horizontal orientation in the raised and extended positions. In the raised position, the lower leg support 952 is higher, forward, and more horizontal than in the retracted position. In the extended position, the lower leg support 952 is higher, forward, and / or more horizontal than in the raised position. For example, operation of a single motor (lower leg support motor 950) can raise and lower the lower leg support 952, tilt the lower leg support 952, and move the lower leg support 952 forward and backward, which can reduce complexity and / or weight compared to a design with multiple motors. Optionally, a third lever 964 translates (e.g., in the longitudinal direction X) during adjustment of the lower leg support 952 and maintains the same orientation (e.g., a maximum rotation of 5 degrees, if any).

[0074] Optionally, the lower leg support link 954 includes a pair of rods 960-968 and a gear 970, which are disposed on opposite lateral sides of the seat bottom 804, have a mirror configuration, and / or are connected by one or more lateral members extending in the lateral direction Y.

[0075] refer to Figure 54 The seat assembly 800 includes a front support leg 818 coupled to a seat base 804 and a seat seat 802. The front support leg 818 includes a protrusion 980 engaging a first lever 960, such that rotation of the front support leg 818 causes rotation of the first lever 960, which in turn causes rotation of a first gear 970, a second gear 972, a second lever 962, a fourth lever 966, and / or a fifth lever 968, to rotate and / or raise or lower the lower leg support 952. The seat assembly 800 includes a front support leg 818 with a protrusion 980 engaging the first lever 960, for example, replacing a lower leg support assembly 808 including a lower leg support motor 950. Figure 51 In the example shown, the calf support assembly 808 includes a spring 982 connected to the first rod 960 and the fourth rod 966.

[0076] refer to Figures 55-61 The seat assembly 1000 is shown as having a seat base 1002, a seat bottom 1004 coupled to the seat base 1002, a seat back 1006 rotatably coupled to at least one of the seat base 1002 or the seat bottom 1004, and a leg support assembly 1008 adjustablely coupled to the seat bottom 1004. Optionally, the seat base 1002 is coupled to a track assembly 112. Figure 1 ), and / or the calf support assembly 1008 is configured to serve as Figure 1 Lower leg support component 108.

[0077] refer to Figures 57-60 The calf support assembly 1008 includes a calf support motor 1150, a calf support 1152, and a calf support link 1154. The calf support link 1154 adjustably connects the calf support 1152 to the seat bottom 1004. The calf support link 1154 includes a first link 1160 rotatably connected to the seat bottom 1004, a second link 1162 connected to the first link 1160, a third link 1164 rotatably connected to the first link 1160 and / or the second link 1162, and / or a fourth link 1166 rotatably connected to the third link 1164 and the calf support 1152.

[0078] The first rod 1160 includes a first rod first end 1160B rotatably connected to the seat bottom 1004 at a first rod axis 1160A, and includes a first rod second end 1160C opposite to the first rod first end 1160B.

[0079] The second rod 1162 includes a first end 1162B connected to the first rod 1160, and a second end 1162C opposite to the first end 1162B. Optionally, the second rod 1162 is rotatably connected to the first rod 1160. Alternatively, the second rod 1162 is fixedly connected to the first rod 1160 at an obtuse angle. Optionally, the second rod 1162 is parallel to the calf support 1152, the third rod 1164 and the fourth rod 1166 are parallel to each other, and / or the second rod 1162, the calf support 1152, the third rod 1164 and the fourth rod 1166 form a parallelogram.

[0080] The third rod 1164 includes a first end 1164B, which is rotatably connected to the first rod 1160 and / or the second rod 1162 at a second rod axis 1162A located at the second end 1160C and the second end 1162B of the first rod, and includes a second end 1164C, which is opposite to the first end 1164B of the third rod and is rotatably connected to the lower leg support 1152 at the third rod axis 1164A.

[0081] The fourth rod 1166 includes a first end 1166B of the second rod rotatably connected to the second rod 1162 at its second end 1162C via a fourth rod axis 1166A, and a second end 1166C of the fourth rod opposite to the first end 1166B and rotatably connected to the lower leg support 1152. A spring 1182 is connected to the first rod 1160, for example, between the first end 1160B and the second end 1160C of the first rod, and to the third rod 1164, for example, between the first end 1164B and the second end 1164C of the third rod. The spring 1182 rotatably biases the third rod 1164 toward the first rod 1160.

[0082] Lower leg support 1152 includes the retracted position ( Figure 55 and Figure 57 ), rising position ( Figure 58 ), and one or more extended locations ( Figure 56 , Figure 59 , Figure 60 One or more extension locations, for example, include partial extension locations ( Figure 59 ) and fully extended position ( Figure 56 , Figure 60 In the retracted position, the lower leg support 1152 has a generally vertical orientation and is positioned at or near the front end 1004B of the seat base 1004. In the raised position, the lower leg support 1152 is higher and more horizontal than in the retracted position. In one or more extended positions, the lower leg support 1152 is further forward than in the raised position. The lower leg support 1152 is higher in some extended positions than in others.

[0083] The first lever 1160 includes a protrusion 1170 that extends radially outward from a first end 1160B of the first lever relative to the first lever axis 1160A. The seat base 1004 includes a stop 1172 (e.g., a plate, flange, etc.) positioned to restrict rotation of the first lever 1160 and facilitate forward movement of the leg support 1152, for example, to or toward one or more extended positions. When the leg support 1152 is in the raised position, the protrusion 1170 contacts the stop 1172. For example, movement of the leg support 1152 from a retracted position to a raised position includes rotation of the first lever 1160 until the protrusion 1170 contacts the stop 1172.

[0084] The calf support motor 1150 is operable to move the calf support 1152 to a retracted position, an elevated position, and one or more extended positions, as well as between these positions. For example, the calf support motor 1150 is operably connected to a third rod 1164 via a calf support spindle 1156 operably coupled to the calf support motor 1150. The calf support spindle 1156 is rotatably coupled to the third rod 1164 between a first end 1164B and a second end 1164C, such that operation of the calf support motor 1150 causes translation of the calf support spindle 1156, which in turn causes movement of the third rod 1164. When the protrusion 1170 deviates from the stop 1172, the movement of the third rod 1164 causes movement of the first rod 1160 and the second rod 1162, movement of the third rod 1164, movement of the fourth rod 1166, and movement of the calf support 1152. With the calf support 1152 in the retracted position, the third lever 1164, via the initial movement of the calf support motor 1150, causes the first lever 1160 and the second lever 1162 to rotate about the first lever axis 1160A. This causes the calf support 1152 to move upward and tilt upward toward a more horizontal orientation. Upon reaching the raised position, the calf support 1152 has a generally horizontal orientation, and the protrusion 1170 contacts the stop 1172, thereby preventing further rotation (e.g., ...). Figure 56 (further counterclockwise rotation in the middle). Continued operation of the calf support motor 1150 causes the third rod 1164 and the fourth rod 1166 to rotate about axes 1164A and 1166A, which moves the calf support 1152 from the raised position forward to the extended position or toward the extended position while maintaining a generally horizontal orientation.

[0085] Optionally, the lower leg support link 1154 includes a second set of links 1160-1166, which are disposed on opposite lateral sides of the seat bottom 1004, have a mirror configuration, are operatively coupled to the lower leg support motor 1150, and / or are connected by one or more lateral members extending in the lateral direction Y.

[0086] refer to Figure 61 The seat assembly 1000 optionally includes a front support leg 1018 coupled (e.g., rotatably) to a seat base 1004 and a seat seat 1002. The front support leg 1018 includes a protrusion 1180 that rotates together with the front support leg 1018. The lower leg support link 1154 optionally includes a fifth link 1184 rotatably coupled to the seat base 1004, and a sixth link 1186 coupled to the fifth link 1184 and a third link 1164. The protrusion 1180 engages with the fifth link 1184 (e.g., contacts its protrusion 1190) such that rotation of the front support leg 1018 and / or rotation of the seat base 1004 relative to the front support leg 1018 causes rotation of the fifth link 1184, thereby moving the lower leg support 1152 between a retracted position, a raised position, and one or more extended positions. For example, forward rotation of the front outrigger 1018 and / or downward rotation of the rear end 1004C of the seat bottom 1004 causes relative rotation between the protrusion 1180 and the projection 1190 (e.g., clockwise rotation of the protrusion 1180 and / or counterclockwise rotation of the projection 1190), which causes rotation of the fifth rod 1184 (e.g., Figure 61 The fifth lever 1184 and the sixth lever 1186 move forward (e.g., translate) at least to some extent, which causes the third lever 1164 to move, thereby causing the lower leg support 1152 to move toward a raised position and / or one or more extended positions. Optionally, the fifth lever 1184 and the sixth lever 1186 are used in place of the lower leg support motor 1150 and the lower leg support spindle 1156, respectively, and / or may allow the lower leg support 1152 to be raised and / or extended automatically (e.g., without user intervention) and passively (e.g., without power and / or operation of the controller 132) as the seat bottom 1004 moves downward. The downward movement of the seat bottom 1004 may optionally be controlled by the electronic controller 132. Figure 1 Controlled, for example via operating the height adjuster motor and / or tilt adjuster (see, for example, see...). Figure 7 The first height adjuster motor 358, Figure 15 The first tilt adjuster 458, etc.

[0087] The various aspects of the seat assemblies disclosed herein can be combined in a single seat assembly. For example, a seat assembly may include various combinations of aspects of seat assemblies 100, 200, 300, 400, 500, 600, 800, and 1000. In a non-limiting example, a seat assembly may include a track assembly 112, a seat bottom adjuster 226, 326, or 426, an armrest 570, a headrest assembly 610, and / or a leg support assembly 808 or 1008. Additionally or alternatively, vehicle 20 ( Figure 1 It may include multiple seat assemblies, which may include some or all of seat assemblies 100, 200, 300, 400, 500, 600, 800, and 1000.

[0088] For example, a spindle (e.g., spindles 144, 254, 255, 352, 362, 726, 736, 956, 1156) may include a threaded shaft that defines a spindle axis along its length. In some examples, the spindle may be coupled to a motor such that operation of the motor causes rotation of the spindle about its axis. In some examples, the spindle may be operatively coupled to a motor via a gearbox such that operation of the motor causes at least some degree of translational motion between the motor and the gearbox. In examples, a gearbox (e.g., gearbox 142, 252, 364) may include one or more components that engage with the spindle (e.g., via threaded engagement, gear engagement, etc.), such as one or more gears, worm gears, nuts, other components, or combinations thereof. For example, a motor (e.g., motors 140, 250, 358, 360, 576, 722, 732, 950, 1150) may include an electric motor, such as a brushed or brushless direct current (DC) motor, and other motor configurations.

[0089] This disclosure includes the following non-limiting embodiments: A seat assembly includes: a seat base; a seat bottom connected to the seat base; and a seat back rotatably connected to at least one of the seat base or the seat bottom.

[0090] The seat assembly according to any of the foregoing embodiments further includes a track assembly connected to the seat base, the track assembly including a fixed track and a movable track.

[0091] The seat assembly according to any of the foregoing embodiments further includes a track adjuster operatively coupled to the fixed track and the movable track to allow the movable track to move along the fixed track.

[0092] According to any of the foregoing embodiments of the seat assembly, wherein the track adjuster includes a track adjuster motor, a track adjuster gearbox, and a track adjuster spindle, the track adjuster spindle being fixed to one of the fixed track or the movable track.

[0093] The seat assembly according to any of the foregoing embodiments further includes a seat bottom adjuster connected to the seat base and the seat bottom to adjust the angle of the seat bottom relative to the seat base.

[0094] According to any of the foregoing embodiments, the seat assembly, wherein the seat bottom adjuster includes a seat bottom adjuster motor, a seat bottom adjuster gearbox operatively coupled to the seat bottom adjuster motor, and a seat bottom adjuster spindle engaged with the seat bottom adjuster gearbox.

[0095] According to any of the foregoing embodiments of the seat assembly, at least one of the following is true: (i) the seat bottom adjuster motor has the same configuration as the track adjuster motor, and (ii) the seat bottom gearbox has the same configuration as the track adjuster gearbox.

[0096] According to any of the foregoing embodiments, the seat bottom spindle includes a spindle top end, a spindle bottom end, and a spindle axis extending from the spindle top end to the spindle bottom end; and the spindle top end is coupled to the seat base such that the seat bottom spindle is rotatable about a transverse axis perpendicular to the spindle axis.

[0097] According to any of the foregoing embodiments of the seat assembly, the lateral axis is fixed relative to the seat base.

[0098] According to any of the foregoing embodiments of the seat assembly, wherein the seat bottom motor is connected to the seat bottom such that the seat bottom motor rotates together with the seat bottom.

[0099] According to any of the foregoing embodiments of the seat assembly, the diameter of the spindle is at least 5 mm and less than or equal to 10 mm.

[0100] According to any of the foregoing embodiments of the seat assembly, wherein the diameter of the spindle is less than 8.5 mm.

[0101] According to any of the foregoing embodiments of the seat assembly, wherein the seat bottom adjuster is coupled to the seat bottom to adjust the angle of the seat bottom by at least 10 degrees and less than or equal to 30 degrees.

[0102] According to any of the foregoing embodiments of the seat assembly, wherein the seat bottom adjuster is coupled to the seat bottom to adjust the angle of the seat bottom to at least 11 degrees and less than or equal to 15 degrees.

[0103] According to any of the foregoing embodiments, the seat back is rotatably directly coupled to the seat base.

[0104] According to any of the foregoing embodiments, the seat assembly wherein the seat back is rotatably directly connected to the seat bottom.

[0105] According to any of the foregoing embodiments of the seat assembly, the movement of the seat back is mechanically independent of the movement of the seat base.

[0106] The seat assembly according to any of the foregoing embodiments also includes a height adjuster.

[0107] According to any of the foregoing embodiments of the seat assembly, the height adjuster includes a first rod rotatably connected to the seat base, a main shaft connected to the seat base, a reciprocating motion member operably engaged with the main shaft, and a second rod rotatably connected to the reciprocating motion member and the seat bottom.

[0108] According to any of the foregoing embodiments of the seat assembly, wherein the first rod is operatively coupled to a first height adjuster motor to rotate the first rod; and the reciprocating motion member is operatively coupled to a second height adjuster motor to move the reciprocating motion member longitudinally.

[0109] According to any of the foregoing embodiments, the seat assembly wherein the seat base is connected to a track assembly, the track assembly including a track adjuster, the track adjuster including a track adjuster motor and a track adjuster spindle.

[0110] According to any of the foregoing embodiments of the seat assembly, the main shaft of the track adjuster and the main shaft of the height adjuster are parallel.

[0111] According to any of the foregoing embodiments of the seat assembly, wherein the second height adjuster motor is operable to move the reciprocating motion member longitudinally, thereby adjusting the position of the front end of the seat bottom.

[0112] The seat assembly according to any of the foregoing embodiments includes a design position, a raised position, a tilted position, an entry position, and a cargo position.

[0113] The seat assembly according to any of the foregoing embodiments further includes a tilt adjuster that rotatably connects the seat back to the seat bottom.

[0114] The seat assembly according to any of the foregoing embodiments further includes an electronic controller operatively coupled to the track adjuster motor, the first height adjuster motor, the second height adjuster motor, and the tilt adjuster to move the seat assembly to the design position, the raised position, the tilted position, the entry position, and the cargo position, and to move between the design position, the raised position, the tilted position, the entry position, and the cargo position.

[0115] According to any of the foregoing embodiments of the seat assembly, moving the seat assembly from the designed position to the raised position includes operating a first height adjuster motor and a second height adjuster motor.

[0116] According to any of the foregoing embodiments of the seat assembly, moving the seat assembly from the designed position to the tilted position includes operating a second adjuster motor.

[0117] According to any of the foregoing embodiments of the seat assembly, moving the seat assembly from the design position to the entry position includes operating a first height adjuster motor, a track adjuster motor, and a tilt adjuster.

[0118] According to any of the foregoing embodiments of the seat assembly, moving the seat assembly from the designed position to the cargo position includes operating a first height adjuster motor, a second height adjuster motor, and a tilt adjuster.

[0119] According to any of the foregoing embodiments of the seat assembly, the reciprocating motion member includes a forward position, a rearward position, and an intermediate position between the forward position and the rearward position.

[0120] According to any of the foregoing embodiments of the seat assembly, the reciprocating motion member is in the forward position when the seat assembly is in the designed position and when the seat assembly is in the entered position.

[0121] According to any of the foregoing embodiments of the seat assembly, the reciprocating member is in the rearward position when the seat assembly is in the cargo position and when the seat assembly is in the tilted position.

[0122] According to any of the foregoing embodiments of the seat assembly, wherein when the seat assembly is in the raised position, the reciprocating motion member is in the intermediate position.

[0123] According to any of the foregoing embodiments of the seat assembly, wherein the first rod includes a first rod first section and a first rod second section, the first rod first section and the first rod second section being arranged in an L-shape.

[0124] According to any of the foregoing embodiments of the seat assembly, wherein the first section of the first rod is rotatably connected to the bottom of the seat and is longer than the second section of the first rod.

[0125] According to any of the foregoing embodiments of the seat assembly, wherein the second section of the first rod is operatively coupled to the first height adjuster motor.

[0126] According to any of the foregoing embodiments of the seat assembly, wherein the first segment of the first rod is rotatably connected to the seat bottom at the rear axis of the seat bottom.

[0127] According to any of the foregoing embodiments of the seat assembly, wherein the seat base is rotatable about the rear axis of the seat base.

[0128] According to any of the foregoing embodiments of the seat assembly, wherein the first rod is connected to the seat bottom, the seat base and the first height adjuster motor, such that rotation of the first rod via the first height adjuster motor causes translation of the rear axis of the seat bottom to adjust the height of the rear portion of the seat bottom.

[0129] According to any of the foregoing embodiments of the seat assembly, the second rod includes a first section of the second rod and a second section of the second rod disposed at an angle relative to the first section of the second rod.

[0130] According to any of the foregoing embodiments of the seat assembly, wherein the angle is greater than 0 degrees and less than 45 degrees.

[0131] According to any of the foregoing embodiments of the seat assembly, wherein the angle is greater than or equal to 10 degrees and less than or equal to 30 degrees.

[0132] The seat assembly according to any of the foregoing embodiments also includes a height adjuster.

[0133] According to any of the foregoing embodiments, the seat assembly, wherein the height adjuster includes: a first rod rotatably connected to a seat base and a seat bottom; a first tilt adjuster rotatably connected to the seat base; a second rod rotatably connected to the seat base; a second tilt adjuster rotatably connecting the second rod to the seat base; and a third rod rotatably connected to the second rod and the seat bottom.

[0134] According to any of the foregoing embodiments of the seat assembly, wherein the first tilt adjuster and the second tilt adjuster are electric tilt adjusters.

[0135] The seat assembly according to any of the foregoing embodiments further includes an electronic controller configured to control the operation of the first tilt adjuster and the second tilt adjuster.

[0136] The seat assembly according to any of the foregoing embodiments further includes a third tilt adjuster that rotatably connects the seat back to the seat bottom; wherein the third tilt adjuster is an electric tilt adjuster, and the electronic controller is configured to control the operation of the third tilt adjuster.

[0137] The seat assembly according to any of the foregoing embodiments includes a design position, a raised position, a tilted position, an entry position, and a cargo position.

[0138] According to any of the foregoing embodiments of the seat assembly, wherein, when the seat assembly is in the designed position, the first rod is set at a first rod design angle, and the second rod is set at a second rod design angle; the first rod design angle is at least 150 degrees and less than or equal to 180 degrees; and the second rod design angle is at least -10 degrees and less than or equal to 20 degrees.

[0139] According to any of the foregoing embodiments of the seat assembly, wherein, when the seat assembly is in the raised position, the first rod is set with a first rod raising angle less than the first rod design angle, and the second rod is set with a second rod raising angle greater than the second rod design angle.

[0140] According to any of the foregoing embodiments of the seat assembly, the first rod has an elevation angle of at least 90 degrees and less than or equal to 150 degrees; and the second rod has an elevation angle of at least 15 degrees and less than or equal to 60 degrees.

[0141] According to any of the foregoing embodiments of the seat assembly, wherein, when the seat assembly is in the tilted position, the first rod is set at a first rod tilt angle, and the second rod is set at a second rod tilt angle; and the second rod tilt angle is greater than the second rod design angle.

[0142] According to any of the foregoing embodiments of the seat assembly, the first rod tilt angle is at least 150 degrees and less than or equal to 180 degrees; and the second rod tilt angle is at least 30 degrees and less than or equal to 60 degrees.

[0143] According to any of the foregoing embodiments of the seat assembly, wherein, when the seat assembly is in the access position, the first rod is set at a first rod access angle and the second rod is set at a second rod access angle; and the first rod access angle is less than the first rod design angle and the first rod tilt angle.

[0144] According to any of the foregoing embodiments of the seat assembly, the first rod entry angle is at least 60 degrees and less than or equal to 110 degrees; and the second rod entry angle is at least -10 degrees and less than or equal to 20 degrees.

[0145] The seat assembly according to any of the foregoing embodiments further includes an armrest that is adjustablely connected to the seat back.

[0146] According to any of the foregoing embodiments of the seat assembly, the armrest includes a base rotatably coupled to the seat back and an arm rotatably coupled to the base.

[0147] According to any of the foregoing embodiments of the seat assembly, the armrest includes a designed position, a raised position, a lowered position, and a folded position.

[0148] According to any of the foregoing embodiments of the seat assembly, wherein in the designed position, the armrest angle is at least -5 degrees and less than or equal to 5 degrees.

[0149] According to any of the foregoing embodiments of the seat assembly, wherein in the raised position, the armrest angle is at least 10 degrees and less than or equal to 25 degrees.

[0150] According to any of the foregoing embodiments of the seat assembly, in the lowered position, the armrest angle is less than or equal to -10 degrees and at least -25 degrees.

[0151] According to any of the foregoing embodiments of the seat assembly, wherein in the folded position, the armrest angle is less than or equal to -40 degrees and at least -70 degrees.

[0152] According to any of the foregoing embodiments of the seat assembly, wherein in the folded position, the armrest angle is less than or equal to -50 degrees and at least -60 degrees.

[0153] The seat assembly according to any of the foregoing embodiments further includes an armrest motor coupled to the seat back and operably coupled to the base, such that operation of the armrest motor causes the base to rotate.

[0154] The seat assembly according to any of the foregoing embodiments further includes a gear segment; wherein the armrest includes a first gear rotatably coupled to the base and meshing with the gear segment; and the armrest includes a second gear coupled to the arm and meshing with the first gear, such that rotation of the base in a first rotational direction causes the arm to rotate in a second rotational direction opposite to the first rotational direction.

[0155] According to any of the foregoing embodiments of the seat assembly, wherein the armrest motor is operatively coupled to a drive shaft, the drive shaft engaging with the base and defining a motor axis fixed relative to the seat back.

[0156] According to any of the foregoing embodiments of the seat assembly, wherein the gear segment is centered on the motor axis.

[0157] According to any of the foregoing embodiments of the seat assembly, wherein the gear segment is rigidly fixed relative to the seat back or integrally formed with the seat back.

[0158] According to any of the foregoing embodiments, the seat back includes a protrusion extending in the lateral direction; and the gear segment extends radially outward from the protrusion.

[0159] According to any of the foregoing embodiments of the seat assembly, a portion of the protrusion is disposed in the base.

[0160] According to any of the foregoing embodiments, the seat assembly wherein the drive shaft extends through the protrusion and into the base.

[0161] According to any of the foregoing embodiments of the seat assembly, wherein the first gear is rotatable about a first axis that moves together with the base about the motor axis; and wherein the second gear rotates together with the arm about a second axis that rotates about the motor axis and the first axis.

[0162] According to any of the foregoing embodiments of the seat assembly, wherein the first axis, the motor axis and the second axis are parallel to each other.

[0163] According to any of the foregoing embodiments, the seat assembly wherein the first axis, the motor axis, and the second axis are parallel to the lateral direction of the seat assembly.

[0164] According to any of the foregoing embodiments of the seat assembly, the drive shaft is coupled to the base via a toothed or splined engagement.

[0165] Handrails according to any of the foregoing embodiments.

[0166] An armrest includes: a base and an arm; a first gear rotatably connected to the base and engaging with a gear segment of a seat assembly; and a second gear connected to the arm and engaging with the first gear, such that rotation of the base in a first rotational direction causes rotation of the arm in a second rotational direction opposite to the first rotational direction.

[0167] A headrest assembly includes: a mounting post; a mounting bracket fixed to the mounting post; an upper rod rotatably connected to the mounting bracket; a lower rod rotatably connected to the mounting bracket; an adjustable bracket rotatably connected to the upper rod and the lower rod; and a headrest pad bracket slidably connected to the adjustable bracket.

[0168] The headrest assembly according to any of the foregoing embodiments further includes a first headrest motor assembly operatively coupled to the mounting bracket and the upper rod to allow the upper rod to rotate relative to the mounting bracket.

[0169] According to any of the foregoing embodiments, the headrest assembly, wherein the first headrest motor assembly includes: a first headrest motor connected to the mounting bracket; a first nut connected to the upper bracket; and a first spindle.

[0170] According to any of the foregoing embodiments of the headrest assembly, a first spindle defines a first spindle axis; the first spindle is operatively coupled to a first headrest motor and engages with a first nut, such that operation of the first headrest motor causes the first spindle to rotate about the first spindle axis and moves the first nut along the first spindle to rotate the upper rod.

[0171] The headrest assembly according to any of the foregoing embodiments further includes a second headrest motor assembly operatively coupled to the adjustable bracket and the headrest pad bracket to allow the headrest pad bracket to slide relative to the adjustable bracket.

[0172] According to any of the foregoing embodiments, the headrest assembly wherein the second headrest motor assembly includes a second headrest motor coupled to the adjustable bracket, a second shaft, and a second nut coupled to the headrest padding bracket.

[0173] According to any of the foregoing embodiments of the headrest assembly, a second spindle defines a second spindle axis; and the second spindle is operatively connected to a second headrest motor and engages with a second nut, such that operation of the second headrest motor causes the second spindle to rotate about the second spindle axis and causes the second nut to translate along the second spindle, such that the headrest cushion support slides relative to the adjustable support.

[0174] The headrest assembly according to any of the foregoing embodiments includes a retracted position, an extended position, and a partially extended position.

[0175] According to any of the foregoing embodiments, the headrest assembly wherein a first headrest motor is operable to move the headrest assembly to a retracted position, an extended position, and a partially extended position, as well as to move between the retracted position, the extended position, and the partially extended position.

[0176] According to any of the foregoing embodiments, the headrest assembly includes a raised position, a lowered position, and a middle position.

[0177] According to any of the foregoing embodiments of the headrest assembly, wherein the second headrest motor is operable to move the headrest pad support to the raised position, the lowered position, and the intermediate position, and to move between the raised position, the lowered position, and the intermediate position, when the headrest assembly is in any of the retracted position, the extended position, or the partially extended position.

[0178] According to any of the foregoing embodiments, the headrest assembly, in the lowered position, is configured to overlap the seat back in a direction perpendicular to the seat back.

[0179] According to any of the foregoing embodiments of the headrest assembly, the upper rod is connected to the mounting bracket at a first upper rod pivot; the upper rod is connected to the adjustable bracket at a second upper rod pivot; the lower rod is connected to the mounting bracket at a first lower rod pivot; and the lower rod is connected to the adjustable bracket at a second lower rod pivot.

[0180] According to any of the foregoing embodiments of the headrest assembly, wherein the first upper pivot is below the second upper pivot.

[0181] According to any of the foregoing embodiments of the headrest assembly, wherein the first lower lever pivot is below the second lower lever pivot.

[0182] According to any of the foregoing embodiments of the headrest assembly, wherein the second lower lever pivot is in front of the first upper lever pivot and the second upper lever pivot.

[0183] According to any of the foregoing embodiments of the headrest assembly, wherein the second lower lever pivot is in front of the first lower lever pivot.

[0184] According to any of the foregoing embodiments of the headrest assembly, when the headrest assembly is in the retracted position, the second lower lever pivot is at a higher height than the first upper lever pivot.

[0185] According to any of the foregoing embodiments of the headrest assembly, wherein, when the headrest assembly is in the extended position, the second lower lever pivot is at a lower height than the second upper lever pivot.

[0186] According to any of the foregoing embodiments of the headrest assembly, the distance between the first upper pivot and the second upper pivot is greater than the distance between the first lower pivot and the second lower pivot.

[0187] According to any of the foregoing embodiments, the headrest assembly wherein the adjustable support is adjustable to a retracted position and an extended position, and between the retracted position and the extended position.

[0188] According to any of the foregoing embodiments of the headrest assembly, adjusting the adjustable bracket to a retracted position and an extended position, and adjusting the adjustable bracket between the retracted position and the extended position, includes translating and tilting the adjustable bracket relative to the mounting post and the mounting bracket.

[0189] According to any of the foregoing embodiments of the headrest assembly, the adjustment of the adjustable bracket toward the extended position includes moving the adjustable bracket forward and tilting it downward relative to the mounting post and mounting bracket, such that the top of the adjustable bracket moves forward further than the bottom of the adjustable bracket.

[0190] The seat assembly according to any of the foregoing embodiments also includes a headrest assembly of any of the foregoing embodiments, which is coupled to the seat back.

[0191] A seating assembly including a headrest assembly according to any of the foregoing embodiments.

[0192] The seat assembly according to any of the foregoing embodiments also includes a lower leg support assembly.

[0193] According to any of the foregoing embodiments of the seat assembly, the lower leg support assembly includes a lower leg support motor, a lower leg support, and a lower leg support link, the lower leg support link adjustingly connecting the lower leg support to the bottom of the seat.

[0194] According to any of the foregoing embodiments of the seat assembly, wherein the lower leg support link comprises: a first link rotatably connected to the seat bottom; a second link rotatably connected to the seat bottom; a third link rotatably connected to the first and second links; a fourth link rotatably connected to the third link and the lower leg support; and a fifth link rotatably connected to the third link and the lower leg support.

[0195] According to any of the foregoing embodiments of the seat assembly, the lower leg support link includes a first gear connected to a first rod and a second gear connected to a fourth rod and engaging with the first gear, such that rotation of the first rod in a first direction causes the fourth rod to rotate in a second direction opposite to the first direction.

[0196] According to any of the foregoing embodiments of the seat assembly, wherein the first gear is disposed at the first end of the third rod; the second rod and the fifth rod are coupled to the second end of the third rod; and the fourth rod is coupled to the third rod between the first end and the second end.

[0197] According to any of the foregoing embodiments of the seat assembly, wherein the lower leg support motor is operatively connected to the first rod.

[0198] According to any of the foregoing embodiments of the seat assembly, wherein the calf support motor is operably connected to the first rod via a calf support spindle, such that operation of the motor causes translation of the spindle and rotation of the first rod.

[0199] According to any of the foregoing embodiments of the seat assembly, wherein the lower leg support motor is mounted to the bottom of the seat.

[0200] The seat assembly according to any of the foregoing embodiments further includes a front support leg coupled to the seat bottom and the seat base, the front support leg including a protrusion that engages with the first rod, such that rotation of the front support leg causes rotation of the first rod.

[0201] According to any of the foregoing embodiments of the seat assembly, the lower leg rest assembly includes a spring connected to the first rod and the fourth rod.

[0202] A calf support assembly includes a calf support motor, a calf support, and a calf support linkage.

[0203] According to any of the foregoing embodiments of the calf support assembly, the calf support link includes: a first link rotatably connected to the seat bottom; a second link rotatably connected to the seat bottom; a third link rotatably connected to the first and second links; a fourth link rotatably connected to the third link and the calf support; and a fifth link rotatably connected to the third link and the calf support.

[0204] According to any of the foregoing embodiments of the seat assembly, wherein the calf support link comprises: a first link rotatably connected to the seat bottom; a second link rotatably connected to the first link; a third link rotatably connected to the calf support and the second link; and a fourth link rotatably connected to the second link and the calf support.

[0205] According to any of the foregoing embodiments of the seat assembly, the lower leg support includes a retracted position, an elevated position, and an extended position.

[0206] According to any of the foregoing embodiments of the seat assembly, wherein the seat bottom includes a stop that is positioned to restrict rotation of the first rod and facilitate forward movement of the lower leg support.

[0207] According to any of the foregoing embodiments of the seat assembly, the first rod includes a protrusion; and, when the lower leg support is in the raised position, the protrusion contacts a stop.

[0208] According to any of the foregoing embodiments of the seat assembly, wherein the lower leg support link includes a spring connecting the first link and the third link.

[0209] According to any of the foregoing embodiments of the seat assembly, wherein the lower leg support motor is operatively connected to the third rod.

[0210] According to any of the foregoing embodiments of the seat assembly, wherein the calf support motor is operable to move the calf support to the retracted position, the raised position, and the extended position, and to move between the retracted position, the raised position, and the extended position.

[0211] The seat assembly according to any of the foregoing embodiments further includes a front support leg connected to the seat bottom and the seat base, the front support leg including a protrusion.

[0212] According to any of the foregoing embodiments of the seat assembly, the lower leg support link includes a fifth link rotatably connected to the bottom of the seat, and a sixth link connected to the fifth link and the third link.

[0213] According to any of the foregoing embodiments of the seat assembly, the protrusion engages with the fifth rod such that rotation of the front outrigger causes rotation of the fifth rod, thereby moving the lower leg support to a retracted position, an elevated position, and an extended position, as well as between the retracted position, the elevated position, and the extended position.

[0214] A calf support assembly includes a calf support motor, a calf support, and a calf support linkage.

[0215] According to any of the foregoing embodiments of the calf support assembly, the calf support link includes a first link; a second link rotatably connected to the first link; a third link rotatably connected to the calf support and the second link; and a fourth link rotatably connected to the second link and the calf support.

[0216] According to any of the foregoing embodiments, the calf support assembly includes a retracted position, an elevated position, and an extended position.

[0217] A seat assembly includes a seat base, a seat bottom connected to the seat base, a seat back rotatably connected to at least one of the seat base or the seat bottom, and a seat bottom adjuster connected to the seat base and the seat bottom to adjust the position of the seat bottom relative to the seat base. The seat bottom adjuster includes an adjuster motor, an adjuster gearbox operably connected to the adjuster motor, and an adjuster spindle engaged with the adjuster gearbox.

[0218] According to any of the foregoing embodiments of the seat assembly, wherein the seat bottom adjuster is configured as a height adjuster, the height adjuster including a first rod rotatably connected to the seat base, an adjuster spindle connected to the seat base, a reciprocating member operably engaged with the adjuster spindle and including the adjuster gearbox, and a second rod rotatably connected to the reciprocating member and the seat bottom.

[0219] According to any of the foregoing embodiments of the seat assembly, wherein the adjuster motor is a second adjuster motor, the first lever is operably coupled to the first adjuster motor to rotate the first lever, and the reciprocating motion member is operably coupled to the second adjuster motor to move the reciprocating motion member longitudinally.

[0220] According to any of the foregoing embodiments of the seat assembly, the seat base is connected to a track assembly, the track assembly includes a track adjuster, the track adjuster includes a track adjuster motor and a track adjuster spindle, and wherein the track adjuster spindle and the adjuster spindle of the seat bottom adjuster are parallel.

[0221] The seat assembly according to any of the foregoing embodiments further includes an electronic controller and a tilt adjuster rotatably connected to the seat back and the seat bottom, wherein the seat assembly includes a design position, a raised position, a tilt position, an entry position, and a cargo position, and wherein the electronic controller is operatively coupled to a track adjuster motor, a first adjuster motor, a second adjuster motor, and the tilt adjuster to move the seat assembly to the design position, the raised position, the tilt position, the entry position, and the cargo position, and to move between the design position, the raised position, the tilt position, the entry position, and the cargo position.

[0222] According to any of the foregoing embodiments, the seat assembly, wherein moving the seat assembly from the design position to the raised position includes operating a first adjuster motor and a second adjuster motor, wherein moving the seat assembly from the design position to the tilt position includes operating a second adjuster motor, wherein moving the seat assembly from the design position to the entry position includes operating a first adjuster motor, a track adjuster motor and a tilt adjuster, and wherein moving the seat assembly from the design position to the cargo position includes operating a first adjuster motor, a second adjuster motor and a tilt adjuster.

[0223] According to any of the foregoing embodiments of the seat assembly, the reciprocating motion member includes a forward position, a rearward position, and an intermediate position between the forward position and the rearward position, wherein the reciprocating motion member is in the forward position when the seat assembly is in the designed position and when the seat assembly is in the enter position, wherein the reciprocating motion member is in the rearward position when the seat assembly is in the cargo position and when the seat assembly is in the tilt position, and wherein the reciprocating motion member is in the intermediate position when the seat assembly is in the raised position.

[0224] According to any of the foregoing embodiments of the seat assembly, wherein the first rod includes a first rod first section and a first rod second section, the first rod first section and the first rod second section being arranged in an L-shape.

[0225] According to any of the foregoing embodiments of the seat assembly, wherein the first section of the first rod is rotatably connected to the bottom of the seat and is longer than the second section of the first rod.

[0226] According to any of the foregoing embodiments of the seat assembly, wherein the second section of the first rod is operatively coupled to the first adjuster motor, and wherein the first section of the first rod is rotatably coupled to the seat bottom at the rear axis of the seat bottom.

[0227] According to any of the foregoing embodiments of the seat assembly, wherein the seat bottom is rotatable about the rear axis of the seat bottom, and wherein the first rod is connected to the seat bottom, the seat base and the first adjuster motor, such that the first rod, via rotation of the first adjuster motor, translates the rear axis of the seat bottom to adjust the height of the rear portion of the seat bottom.

[0228] According to any of the foregoing embodiments of the seat assembly, the second rod includes a first section of the second rod and a second section of the second rod arranged at an angle relative to the first section of the second rod, wherein the angle is greater than 0 degrees and less than 45 degrees.

[0229] The seat assembly according to any of the foregoing embodiments further includes: a track assembly coupled to the seat base, the track assembly including a fixed track and a movable track; and a track adjuster operatively coupled to the fixed track and the movable track to move the movable track along the fixed track, wherein the track adjuster includes a track adjuster motor, a track adjuster gearbox, and a track adjuster spindle, the track adjuster spindle being fixed to one of the fixed track or the movable track, and wherein at least one of the following is true: (i) the adjuster motor of the seat bottom adjuster has the same configuration as the track adjuster motor, or (ii) the adjuster gearbox of the seat bottom adjuster has the same configuration as the track adjuster gearbox.

[0230] According to any of the foregoing embodiments, the seat assembly includes a spindle top end, a spindle bottom end, and a spindle axis extending from the spindle top end to the spindle bottom end, and wherein the spindle top end is coupled to the seat base such that the spindle spindle is rotatable about a transverse axis perpendicular to the spindle axis.

[0231] According to any of the foregoing embodiments of the seat assembly, the lateral axis is fixed relative to the seat base.

[0232] According to any of the foregoing embodiments of the seat assembly, wherein the adjuster motor is coupled to the seat base such that the adjuster motor rotates together with the seat base.

[0233] According to any of the foregoing embodiments of the seat assembly, wherein the seat bottom adjuster is coupled to the seat bottom to adjust the angle of the seat bottom by at least 10 degrees and less than or equal to 30 degrees.

[0234] According to any of the foregoing embodiments of the seat assembly, wherein the seat bottom adjuster is coupled to the seat bottom to adjust the angle of the seat bottom to at least 11 degrees and less than or equal to 15 degrees.

[0235] According to any of the foregoing embodiments, the seat back is rotatably directly coupled to the seat base or the seat bottom.

[0236] The seat assembly according to any of the foregoing embodiments further includes an armrest connected to the seat back, a headrest assembly connected to the seat back, and a leg support assembly connected to the bottom of the seat.

[0237] Handrails according to any of the foregoing embodiments.

[0238] Seat backrest according to any of the foregoing embodiments.

[0239] The headrest assembly according to any of the foregoing embodiments.

[0240] Lower leg support assembly according to any of the foregoing embodiments.

[0241] A seat assembly includes: a seat bottom adjuster according to any of the foregoing embodiments; a height adjuster according to any of the foregoing embodiments; an armrest according to any of the foregoing embodiments; a headrest assembly according to any of the foregoing embodiments; and a leg support assembly according to any of the foregoing embodiments.

[0242] A seat assembly includes at least one of: a seat bottom adjuster according to any of the foregoing embodiments; a height adjuster according to any of the foregoing embodiments; an armrest according to any of the foregoing embodiments; a headrest assembly according to any of the foregoing embodiments; or a leg support assembly according to any of the foregoing embodiments.

[0243] A seat assembly includes: a seat base; a seat bottom connected to the seat base; and a seat back rotatably connected to at least one of the seat base or the seat bottom.

[0244] The seat assembly according to any of the foregoing embodiments further includes at least one of the following: a seat bottom adjuster according to any of the foregoing embodiments coupled to the seat bottom; an armrest according to any of the foregoing embodiments coupled to the seat back; a headrest assembly according to any of the foregoing embodiments coupled to the seat back; or a calf support assembly according to any of the foregoing embodiments coupled to the seat bottom.

[0245] A means of transportation, including a seat assembly according to any of the foregoing embodiments.

[0246] An electronic controller configured to control the operation of any of the foregoing embodiments.

[0247] A means of transportation, including an electronic controller according to any of the foregoing embodiments.

[0248] A non-transitory computer-readable storage medium having a computer program encoded thereon for controlling any of the foregoing embodiments.

[0249] A means of transportation, including a non-transitory computer-readable storage medium according to any of the foregoing embodiments.

[0250] In the example, the controller (e.g., electronic controller 134) may include an electronic controller and / or an electronic processor, such as a programmable microprocessor and / or a microcontroller. In embodiments, the controller may include, for example, an application-specific integrated circuit (ASIC) and / or an embedded controller. The controller may include a central processing unit (CPU), memory (e.g., a non-transitory computer-readable storage medium), and / or input / output (I / O) interfaces. The controller may be configured to perform various functions, including those described in more detail herein, using appropriate programming instructions and / or code embodied in software, hardware, and / or other media. In embodiments, the controller may include multiple controllers. In embodiments, the controller may be connected to a display, such as a touchscreen display.

[0251] This document describes various examples / implementations for various apparatuses, systems, and / or methods. Numerous specific details are set forth to provide a thorough understanding of the overall structure, function, manufacture, and use of the examples / implementations described in the specification and illustrated in the accompanying drawings. However, those skilled in the art will understand that the examples / implementations can be practiced without such specific details. In other instances, well-known operations, components, and elements have not been described in detail so as not to obscure the examples / implementations described in this specification. Those skilled in the art will understand that the examples / implementations described and illustrated herein are non-limiting examples, and therefore it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.

[0252] Throughout this specification, references to “example,” “in an example,” “for an example,” “various embodiments,” “for an embodiment,” “in an embodiment,” “an embodiment,” “for some constructions,” “in some constructions,” etc., indicate that a particular feature, structure, or characteristic described in connection with an example / embodiment is included in at least one embodiment. Therefore, the appearance of the phrases “example,” “in an example,” “for an example,” “in the illustrated example,” “in various embodiments,” “for an embodiment,” “in an embodiment,” “an embodiment,” “for some constructions,” “in some constructions,” etc., throughout this specification does not necessarily refer to the same embodiment. Furthermore, specific features, structures, and / or characteristics can be combined in any suitable manner in one or more examples / embodiments. Therefore, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment / example can be combined, in whole or in part, without limitation, with features, structures, functions, and / or characteristics of one or more other embodiments / examples, provided that such combination is not illogical or ineffective. Moreover, many modifications can be made to adapt a particular situation or material to the teachings of this disclosure without departing from the scope of this disclosure. The term “exemplary” is used herein to mean “as a non-limiting example.”

[0253] It should be understood that references to a single element are not necessarily so restrictive and may include one or more such elements unless the context explicitly indicates otherwise. Any directional references (e.g., positive, negative, upper, lower, up, down, left, right, to the left, to the right, top, bottom, above, below, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes only to aid the reader in understanding this disclosure and do not create any limitation, particularly regarding the location, orientation, or use of the examples / embodiments.

[0254] "One or more" includes functions performed by a single element, functions performed by more than one element (e.g., in a distributed manner), several functions performed by a single element, several functions performed by several elements, or any combination of the foregoing. The term "at least one of..." in the context of, for example, "at least one of A, B, and C" or "at least one of A, B, or C", includes only A, only B, only C, or any combination or subset of A, B, and C, including any combination or subset of one or more A's, one or more B's, and one or more C's. A "set" of elements can include any number of one or more elements.

[0255] Although the terms first, second, etc., are used in certain circumstances to describe various elements herein, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of the various embodiments described. Both the first element and the second element are elements, but they are not the same element.

[0256] The terminology used in the description of the various embodiments described herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various described embodiments and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items. The use of “and” and “or” should be interpreted broadly (e.g., considered as “and / or”). For example, and without limitation, the use of “and” does not necessarily require all listed elements or features, and the use of “or” is inclusive unless such a construction would otherwise be illogical. When used in this specification, the terms “includes,” “including,” “comprises,” and / or “comprising” specify the presence of the stated feature, integer, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0257] References to engagement (e.g., attachment, connection, link, etc.) should be interpreted broadly and may include intermediate members between connected elements, relative movement between elements, direct connection, indirect connection, fixed connection, movable connection, operative connection, indirect contact, and / or direct contact. Therefore, references to engagement do not necessarily mean that two elements are directly connected / linked and fixed to each other. Connections of electrical components (if any) may include mechanical connections, electrical connections, wired connections, and / or wireless connections, etc. The use of "e.g." and "such as" in this specification should be interpreted broadly and is intended to provide non-limiting examples of embodiments of this disclosure, and this disclosure is not limited to such examples.

[0258] While this paper may describe processes, systems, and methods by combining one or more steps in a particular sequence, these methods may be practiced by steps in different orders, by performing certain steps simultaneously, by adding steps, and / or by omitting certain steps described.

[0259] As used herein, the term "if" may optionally be interpreted as "when," "in response to determining," or "in response to detecting," depending on the context. Similarly, the phrase "if determined" or "if [the condition or event] is detected" may optionally be interpreted as "when determined," "in response to determining," "when [the condition or event] is detected," or "in response to detecting [the condition or event]," depending on the context.

[0260] References to vehicles may include one or more of a variety of vehicles, including but not limited to passenger cars (e.g., sedans, pickup trucks, SUVs, crossovers, etc.), trucks, buses, airplanes, or ships.

[0261] Everything contained in the above description or illustrated in the accompanying drawings should be interpreted as illustrative rather than restrictive. Changes may be made in detail or structure without departing from this disclosure.

[0262] The controllers, electronic control units (ECUs), systems, and / or processors described herein may include conventional processing devices known in the art, capable of executing pre-programmed instructions stored in associated memory, all according to the functions described herein. To the extent that the methods described herein are embodied in software, the resulting software may be stored in associated memory and may also be configured to perform these methods. Such systems or processors may also be of the type having ROM, RAM, RAM and ROM, and / or a combination of non-volatile and volatile memory, enabling the storage of any software and also allowing the storage and processing of dynamically generated data and / or signals.

[0263] Articles of manufacture according to this disclosure may include a non-transitory computer-readable storage medium on which a computer program is encoded for implementing the logic and other functions described herein. The computer program may include code for performing one or more methods disclosed herein. Such embodiments may be configured to execute via one or more processors, such as a multiprocessor system integrated into a single system or distributed across and connected together on a communication network, which may be wired and / or wireless. Code for implementing one or more features in conjunction with the features described in one or more embodiments may, when executed by a processor, cause multiple transistors to change from a first state to a second state. Specific change patterns (e.g., which transistors change state and which do not change state) may be determined at least in part by logic and / or code.

Claims

1. A seat assembly, comprising: Seat base; The bottom of the seat is connected to the seat base; A seat backrest, which is rotatably connected to at least one of the seat base or the seat bottom; and A seat bottom adjuster, connected to the seat base and the seat bottom, for adjusting the position of the seat bottom relative to the seat base, the seat bottom adjuster comprising: - Regulator motor, - A regulator gearbox, operably connected to the regulator motor, and - A regulator spindle, which engages with the regulator gearbox.

2. The seat assembly according to claim 1, wherein, The seat bottom adjuster is configured as a height adjuster, the height adjuster comprising: The first rod is rotatably connected to the seat base. The adjuster spindle is connected to the seat base. A reciprocating motion component, operably engaged with the regulator spindle and including the regulator gearbox, and The second rod is rotatably connected to the reciprocating motion component and the bottom of the seat.

3. The seat assembly according to claim 2, wherein, The regulator motor is a second regulator motor, the first rod is operably connected to the first regulator motor to rotate the first rod; and the reciprocating motion member is operably connected to the second regulator motor to move the reciprocating motion member longitudinally.

4. The seat assembly according to claim 3, wherein, The seat base is connected to a track assembly, the track assembly including a track adjuster, which includes a track adjuster motor and a track adjuster spindle; and The main shaft of the track adjuster and the main shaft of the seat bottom adjuster are parallel.

5. The seat assembly of claim 3, further comprising an electronic controller and a tilt adjuster, the tilt adjuster rotatably connecting the seat back to the seat bottom; The seat assembly includes a design position, a raised position, a tilted position, an entry position, and a cargo position; and in, The electronic controller is operatively coupled to the track adjuster motor, the first adjuster motor, the second adjuster motor, and the tilt adjuster to move the seat assembly to the designed position, the raised position, the tilted position, the entry position, and the cargo position, as well as between the designed position, the raised position, the tilted position, the entry position, and the cargo position.

6. The seat assembly according to claim 5, wherein, Moving the seat assembly from the designed position to the raised position includes operating the first adjuster motor and the second adjuster motor; Moving the seat assembly from the designed position to the tilted position includes operating the second adjuster motor; Moving the seat assembly from the designed position to the access position includes operating the first adjuster motor, the track adjuster motor, and the tilt adjuster; and Moving the seat assembly from the designed position to the cargo position includes operating the first adjuster motor, the second adjuster motor, and the tilt adjuster.

7. The seat assembly according to claim 5, wherein, The reciprocating motion component includes a forward position, a rearward position, and an intermediate position between the forward position and the rearward position; When the seat assembly is in the designed position and when the seat assembly is in the entered position, the reciprocating motion member is in the forward position; When the seat assembly is in the cargo-carrying position and when the seat assembly is in the tilted position, the reciprocating motion member is in the rearward position; and When the seat assembly is in the raised position, the reciprocating motion member is in the intermediate position.

8. The seat assembly according to claim 3, wherein, The first pole includes a first pole first section and a first pole second section, which are arranged in an L-shape.

9. The seat assembly according to claim 8, wherein, The first section of the first rod is rotatably connected to the bottom of the seat and is longer than the second section of the first rod.

10. The seat assembly according to claim 9, wherein, The second section of the first lever is operably connected to the first regulator motor; and The first segment of the first rod is rotatably connected to the bottom of the seat at the rear axis of the bottom of the seat.

11. The seat assembly of claim 10, wherein, The seat base is capable of rotating about the rear axis of the seat base; and The first rod is connected to the bottom of the seat, the seat base, and the first adjuster motor, such that the rotation of the first rod via the first adjuster motor causes the rear axis of the bottom of the seat to translate, thereby adjusting the height of the rear part of the bottom of the seat.

12. The seat assembly of claim 11, wherein, The second rod includes a first section of the second rod and a second section of the second rod arranged at an angle relative to the first section of the second rod; and The angle is greater than 0 degrees and less than 45 degrees.

13. The seat assembly of claim 1, further comprising: A track assembly, which is connected to the seat base, includes a fixed track and a movable track; and A track adjuster operatively connected to the fixed track and the movable track to move the movable track along the fixed track; The track adjuster includes a track adjuster motor, a track adjuster gearbox, and a track adjuster spindle, the track adjuster spindle being fixed to either the fixed track or the movable track; and Wherein, at least one of the following is true: (i) the adjuster motor of the seat bottom adjuster has the same configuration as the track adjuster motor, and (ii) the adjuster gearbox of the seat bottom adjuster has the same configuration as the track adjuster gearbox.

14. The seat assembly according to claim 1, wherein, The regulator spindle includes a spindle top end, a spindle bottom end, and a spindle axis extending from the spindle top end to the spindle bottom end; and The top end of the main shaft is connected to the seat base, enabling the adjuster main shaft to rotate about a transverse axis perpendicular to the main shaft axis.

15. The seat assembly of claim 14, wherein, The lateral axis is fixed relative to the seat base.

16. The seat assembly of claim 14, wherein, The adjuster motor is connected to the bottom of the seat, so that the adjuster motor rotates together with the bottom of the seat.

17. The seat assembly of claim 14, wherein, The seat bottom adjuster is connected to the bottom of the seat to adjust the angle of the bottom of the seat by at least 10 degrees and less than or equal to 30 degrees.

18. The seat assembly of claim 14, wherein, The seat bottom adjuster is connected to the bottom of the seat to adjust the angle of the bottom of the seat by at least 11 degrees and less than or equal to 15 degrees.

19. The seat assembly of claim 14, wherein, The seat backrest is rotatably connected directly to the seat base or the bottom of the seat.

20. The seat assembly of claim 1, further comprising an armrest connected to the seat back, a headrest assembly connected to the seat back, and a leg support assembly connected to the bottom of the seat.

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