Modular vehicle seating assembly

Abstract

The present disclosure provides a "modular vehicle seating assembly". A vehicle seating assembly includes a seat base operably coupled to a vehicle floor; and a lift assembly operably coupled with the seat base, where the lift assembly is vertically operable between an engaged position and a disengaged position to vertically adjust the forward portion of the seat base when in the engaged position. The lift assembly includes a base bracket extending between a seat base and a vehicle floor; the first terminal bracket is arranged at the first end of the base bracket; the second terminal bracket is arranged at the second end of the base bracket; a drive shaft extending between the first terminal bracket and the second terminal bracket; and an articulation bracket operably coupled to the drive shaft, where the articulation bracket is configured to translate along the drive shaft to adjust the forward portion of the seat base when the lift assembly is in the engaged position.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to US 63 / 689,260, filed August 30, 2024, entitled “MODULAR VEHICLE SEATING ASSEMBLY,” the disclosure of which is incorporated by reference herein in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates generally to a seating assembly for a vehicle, and more particularly to a lift assembly for a vehicle seating assembly. BACKGROUND

[0004] Vehicle seating assemblies generally include a seat structure configured to support the static and dynamic weight of an occupant during travel. The seat structure is typically complex and assembled piece-by-piece at a manufacturing site. SUMMARY

[0005] According to a first aspect of the present disclosure, a vehicle seating assembly includes a seat base operably coupled to a vehicle floor, the seat base including a forward portion and an aft portion, and a lift assembly operably coupled with the seat base, wherein the lift assembly is vertically operable between an engaged position and a disengaged position to vertically adjust the forward portion of the seat base when in the engaged position. The lift assembly includes a base bracket extending between the seat base and the vehicle floor, wherein the base bracket includes a first end and a second end, a first terminal bracket disposed on the first end of the base bracket, and a second terminal bracket disposed on the second end of the base bracket, a drive shaft extending between the first terminal bracket and the second terminal bracket, and an articulating bracket operably coupled to the drive shaft, wherein the articulating bracket is configured to translate along the drive shaft to adjust the forward portion of the seat base when the lift assembly is in the engaged position.

[0006] Embodiments of the first aspect of the present disclosure can include any one or combination of the following features:

[0007] - a rail assembly including a rail supported by the vehicle floor and a slider operably coupled with the seat base, wherein the slider is slidably engaged with the rail along a longitudinal direction to adjust a position of the seat base; and a transverse support structure positioned on opposite sides of the seat base, wherein the transverse support structure extends proximate the rail assembly between the forward portion and the rearward portion of the seat base;

[0008] - the base bracket is positioned on an inner portion of the transverse support structure and is operably coupled to a connector link positioned on an outer portion of the transverse support structure;

[0009] - the first end of the base bracket defines an opening and the second end defines a curved portion, and wherein the connector link includes a first curved end and a second curved end;

[0010] - a first coupling joint extends through the opening of the base bracket to engage the first curved end of the connector link, and a second coupling joint extends along the curved portion of the base bracket to engage the second curved end of the connector link;

[0011] - the articulated bracket includes a first end and a second end, and wherein the first end is operably coupled to the drive shaft and the second end defines an aperture configured to receive the second coupling joint;

[0012] - a coupling bracket is coupled to the rail assembly between the base bracket and the connector link, wherein the coupling bracket defines an aperture configured to receive an end of the first coupling joint to secure the lift assembly;

[0013] - an anchor bracket coupled to the second end of the base bracket, wherein the first terminal bracket is coupled to the anchor bracket;

[0014] - the lift assembly includes a motor and a motor shaft, and wherein the motor shaft extends from an end of the motor to engage a lead screw nut;

[0015] - the motor and the motor shaft are disposed in a motor housing, and wherein the motor housing is operably coupled to the articulated bracket of the lift assembly;

[0016] - the seat base is operable between a seated position and a reclined position;

[0017] - the reclined position includes a second distance between the seat back and the vehicle floor is reduced;

[0018] - a lead nut threadably engaged with the drive shaft, wherein the lead nut is configured to translate along the drive shaft between the first terminal bracket and the second terminal bracket; and

[0019] - the seat base is operably coupled to a rotation assembly, and wherein the rotation assembly is configured to adjust the rearward portion of the seat base.

[0020] According to a second aspect of the disclosure, a vehicle seat assembly includes a seat base operably coupled to a vehicle floor, the seat base including a forward portion and a rearward portion. The seat base is operable between a seated position and a reclined position, a lift assembly is operably coupled with a seat base frame, wherein the lift assembly is configured to adjust the seat base vertically relative to the vehicle floor when the seat base is operated between the seated position and the reclined position. The lift assembly includes a base bracket including a main body and an articulated bracket operably coupled to the forward portion of the seat base, wherein the seat base is configured to translate along a length of the main body of the base bracket to adjust the seat base between the seated position and the reclined position.

[0021] Embodiments of the second aspect of the disclosure can include any one or combination of the following features:

[0022] - a first terminal bracket and a second terminal bracket disposed on the main body of the base bracket, a drive shaft extending between the first terminal bracket and the second terminal bracket, wherein the drive shaft includes a first end and a second end, and a lead nut threadably engaged with the drive shaft, wherein the lead nut is configured to translate along the drive shaft from the first terminal bracket to the second terminal bracket to adjust the forward portion of the seat base vertically; and

[0023] - the first terminal bracket defines a channel configured to receive the first end of the drive shaft, and wherein the second terminal bracket defines an aperture to receive the second end of the drive shaft such that the drive shaft extends along the main body of the base bracket.

[0024] According to a third aspect of the present disclosure, a modular seat assembly for a vehicle includes a seat base frame operably coupled to a vehicle floor; a seat base including a forward portion and a rearward portion, wherein the seat base is operable between a seated position and a reclined position; a lift assembly operably coupled with the seat base frame, wherein the lift assembly is configured to adjust the seat base a distance when the seat base is operated between the seated position and the reclined position. The lift assembly includes a motor assembly disposed proximate a lower side of the seat base in a central location between the forward portion of the seat base and the vehicle floor, wherein the motor assembly includes a motor and a motor shaft extending from the motor; an articulated bracket operably coupled to the motor assembly, the articulated bracket configured to adjust the forward portion of the seat base vertically relative to the vehicle floor, the forward portion of the seat base being adjusted away from the vehicle floor when the lift assembly is engaged.

[0025] Embodiments of the third aspect of the present disclosure can include any of the following features, alone or in combination:

[0026] a base bracket having a first end and a second end, wherein the base bracket extends between the forward portion of the seat base and the vehicle floor, and wherein the drive shaft extends along the base bracket; a first terminal bracket disposed on the first end of the base bracket; and a second terminal bracket disposed on the second end of the base bracket, wherein the lead nut is configured to translate along the drive shaft between the first terminal bracket and the second terminal bracket when the seat base transitions between the seated position and the reclined position; and

[0027] when the seat base is in the reclined position, the distance between the forward portion of the seat base and the vehicle floor positions the seat base at an angle relative to the vehicle floor.

[0028] These and other features, advantages, and objects of the present disclosure will be further understood and appreciated by those skilled in the art by reference to the following specification, claims, and appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] In the drawings:

[0030] Figure 1 is a partial side perspective view of a vehicle seat assembly within an interior cabin of a vehicle;

[0031] Figure 2 is a side perspective view of a vehicle seat assembly including a seat base pivotably coupled with a seat back.

[0032] Figure 3 This is an exploded view of a seat base and seat base frame for a vehicle seat assembly, the vehicle seat assembly including a cover fabric, a seat cushion assembly, a suspension assembly, a lifting assembly, and a seat base.

[0033] Figure 4 It is a side perspective view of the seat floor including the suspension assembly, which is disposed in the central opening area of ​​the seat floor;

[0034] Figure 5 It is a side front view of the seat base including the rearward support member that defines the curved portion;

[0035] Figure 6 It is a side perspective view of the seat base frame including the lifting assembly;

[0036] Figure 7A It is a side perspective view of a lifting assembly including a motor, a pair of motor shafts extending from the motor, and opposing lifting mechanisms operably connected to the motor shafts.

[0037] Figure 7B This is a side perspective view of the lifting assembly with the motor housing and hinge bracket removed.

[0038] Figure 8 It is an exploded view of a portion of a lifting assembly including opposing lifting mechanisms, the opposing lifting mechanisms having a base bracket, a drive shaft, a guide nut, and a hinge bracket;

[0039] Figure 9 It is a side perspective view of the vehicle seat assembly, including the seat floor that engages with the front and rear crossbeams.

[0040] Figure 10A It is a partial side perspective view of the lifting mechanism of the lifting assembly that is operably connected to the seat base frame when the seat base is in the seated position;

[0041] Figure 10B It is a partial side perspective view of the lifting mechanism of the lifting assembly that is operable to the seat base frame when the seat base is in the tilted position;

[0042] Figure 11A It is a side perspective view of a vehicle seat assembly, including a lifting assembly that is operably connected to the seat base frame when the vehicle seat assembly is in the seated position.

[0043] Figure 11B It is a side perspective view of a vehicle seat assembly, including a lifting assembly operably connected to the seat base frame when the vehicle seat assembly is in a tilted position; and

[0044] Figure 12This is a block diagram for the control layout of the vehicle seat assembly. Detailed Implementation

[0045] Reference will now be made in detail to the preferred embodiments of this disclosure, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numerals will be used throughout the drawings to refer to the same or similar parts. In the drawings, structural elements are depicted not to scale, and some parts are enlarged relative to others for emphasis and understanding purposes.

[0046] Detailed embodiments of this disclosure are disclosed herein as needed; however, it should be understood that the disclosed embodiments are merely examples of this disclosure and may be implemented in various and alternative forms. The accompanying drawings are not necessarily detailed designs; some schematic diagrams may be enlarged or minimized to show a functional overview. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but rather serve only as a representative basis for teaching those skilled in the art to employ this disclosure in different ways.

[0047] For descriptive purposes, the terms "up," "down," "right," "left," "back," "front," "vertical," "horizontal," and their derivatives should be used in this document. Figure 1 The concept of orientation is used. However, it should be understood that the concept may present various alternative orientations unless explicitly stated otherwise. It should also be understood that the specific apparatus and processes shown in the accompanying drawings and described in the following specification are merely exemplary embodiments of the inventive concept defined in the appended claims. Therefore, unless otherwise expressly stated in the claims, the specific dimensions and other physical characteristics relating to the embodiments disclosed herein should not be considered limiting.

[0048] The embodiments illustrated herein primarily exist in combinations of method steps and apparatus components related to a lifting assembly for a vehicle seat assembly. Therefore, apparatus components and method steps have been indicated by conventional symbols in the drawings where appropriate, showing only those specific details relevant to understanding embodiments of this disclosure, so as not to obscure the disclosure in ways obvious to those skilled in the art who will benefit from the description herein. Furthermore, the same reference numerals denote the same elements in the specification and drawings.

[0049] As used herein, the term "and / or" when used with two or more listed items means that any one of the listed items may be used alone, or any combination of two or more of the listed items may be used. For example, if a composition is described as containing components A, B, and / or C, the composition may contain: A only; B only; C only; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C.

[0050] In this document, relational terms such as first and second, top and bottom are used individually to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms “comprising,” “including,” or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article of manufacture, or apparatus that comprises a list of elements includes not only those elements but may also include other elements not expressly listed or inherent to such process, method, article of manufacture, or apparatus. Without further constraints, an element preceded by “comprising…” does not exclude the presence of additional identical elements in the process, method, article of manufacture, or apparatus that includes said element.

[0051] As used herein, the term "about" means that a quantity, dimension, formulation, parameter, and other quantity and characteristic is not precise, nor is it required to be precise, but may be approximate and / or larger or smaller as needed to reflect tolerances, conversion factors, rounding, measurement errors, and other factors known to those skilled in the art. When the term "about" is used to describe an endpoint of a value or range, this disclosure should be understood to include the specific value or the mentioned endpoint. Whether or not the endpoints of numerical values ​​or ranges in this specification are referred to as "about," the endpoints are intended to include two embodiments: one modified by "about" and one not modified by "about." It should also be understood that each endpoint of a range is significant both in relation to and independent of another endpoint.

[0052] As used herein, the terms “substantially,” “basically,” and variations thereof are intended to indicate that the described feature is equal to or approximately equal to a value or description. For example, a “substantially planar” surface is intended to indicate a planar or approximately planar surface. Additionally, “substantially” is intended to mean that two values ​​are equal or approximately equal. In some embodiments, “substantially” may indicate that the values ​​are within about 10% of each other, such as within about 5% of each other, or within about 2% of each other.

[0053] Unless explicitly indicated otherwise, as used herein, the terms “the,” “an,” or “a” mean “at least one” and should not be limited to “only one.” Thus, for example, unless the context clearly indicates otherwise, references to “component” include embodiments having two or more such components.

[0054] refer to Figures 1 to 12Reference numeral 10 generally indicates a seat assembly for a vehicle 11, the vehicle seat assembly including a seat base 12 operably coupled to a seat base frame 14. The seat base 12 is operably coupled to a vehicle floor 15 and includes a forward portion 16 and a rearward portion 18. A seat back 20 is rotatably coupled to the seat base 12 adjacent to the rearward portion 16. A seat cushion assembly 22 is coupled to a seat base 24. The seat base 24 includes at least one hook-shaped tab 26 disposed on a lower side 28 of the seat base 24. The seat base 24 also includes a rearward support 30 defining an arcuate portion 32. A lift assembly 34 is operably coupled to the seat base 12 and is vertically operable between an engaged position and a disengaged position to vertically adjust the forward position 16 of the seat base 12 when in the engaged position. The lift assembly 34 includes a base bracket 36 extending between the lower side of the seat base 12 and the vehicle floor 15. The base bracket 36 includes a first end 38a and a second end 38b. An upper terminal bracket 40 is disposed on a first end 38a of a base bracket 36, and a lower terminal bracket 42 is disposed on a second end 38b of the base bracket 36. A drive shaft 44 extends between the upper terminal bracket 40 and the lower terminal bracket 42. A guide nut 46 is threadedly engaged with the drive shaft 44 and configured to translate along the drive shaft 44. A hinge bracket 48 is operably coupled to the guide nut 46. The hinge bracket 48 is configured to translate along the drive shaft 44 via the guide nut 46 when the lifting assembly 34 is in the engaged position to adjust the forward portion 16 of the seat base 12.

[0055] Now for reference Figure 1 The vehicle 11 includes an interior compartment 50, which includes at least one seat assembly 10 for supporting passengers thereon. The vehicle 11 can be a sedan, SUV, van, truck, crossover, other type of wheeled motor vehicle, or other type of vehicle. The vehicle 11 can be a manually operated vehicle (e.g., operated with a human driver), a fully autonomous vehicle (e.g., operated without a human driver), or a partially autonomous vehicle (e.g., operated with or without a human driver). Additionally, the vehicle 11 can be used for personal and / or commercial purposes, such as providing ride services (e.g., drive-through transportation), transportation, and / or ride-sharing services.

[0056] Still referencing Figure 1 And also refer to Figure 2The vehicle seat assembly 10 includes a seat base 12 having a forward portion 16 and a rearward portion 18, and a seat back 20 having a top portion 52 and a bottom portion 54. The rearward portion 18 of the seat base 12 is positioned near the bottom portion 54 of the seat back 20, such that the seat back 20 is pivotable relative to the rearward portion 18 of the seat base 12. The seat back 20 includes both an upper seat back 56 and a lower seat back 58. The vehicle seat assembly 10 includes a headrest 60 disposed on the upper seat back 56. The headrest 60 is movable between a forward position and a rearward position to accommodate passenger heads of various sizes and passengers of different heights. The vehicle seat assembly 10 also includes a control 61 specifically configured to adjust the upper chest portion 62 of the upper seat back 56 or the lower lumbar portion 64 of the lower seat back 58.

[0057] The vehicle seat assembly 10 may include various comfort controls, including, for example, a calf support 66, a thigh support 68, and pivot controls that allow pivotal movement of the seat back 20. Additionally, a receiver 74 for the lanyard assembly is disposed on the vehicle seat assembly 10 to secure the passenger when seated. Furthermore, the vehicle seat assembly 10 is slidably mounted on a guide rail sliding assembly 76. Figure 6 The guide rail sliding assembly 76 allows the vehicle seat assembly 10 to move relative to the vehicle 11 in the fore-and-aft direction. The guide rail sliding assembly 76 includes a guide rail 78 that can be fixed to the vehicle floor 15. In various examples, the guide rail sliding assembly 76 can be coupled to the vehicle floor 15 via one or more support legs 81. The support legs 81 can be coupled to the guide rail 78 of the guide rail sliding assembly 76. Additionally, the guide rail sliding assembly 76 includes a slider 82 that can be operatively coupled to the vehicle seat assembly 10 (specifically, the seat base frame 14). The slider 82 slidably engages with the guide rail 78. Sliding movement of the slider 82 relative to the guide rail 78 in the longitudinal direction can adjust the relative positions of the seat base 12, seat back 20, and lifting assembly 34 relative to the guide rail sliding assembly 76 and / or the support legs 81. Therefore, forward trim pieces and side trim pieces 88 can be positioned around the seat base 12, and base trim pieces 90 can be positioned around the seat base frame 14. Decorative components cover structural parts of the seat base frame 14 and seat base 12, such as guide rail sliding assembly 76.

[0058] refer to Figure 3The seat base 12 includes a seat cushion assembly 22 on which a covering fabric 92 is disposed. The covering fabric 92 may include different types on different portions of the seat cushion assembly 22. The seat cushion assembly 22 of the seat base 12 includes a main seat cushion 94, seat side support cushions 96, and thigh support cushions 98. The thigh support cushion 98 is configured to wrap around a thigh support member 68 to provide comfort while supporting the passenger's thighs. The main seat cushion 94 and / or the side support cushions 96 may include a plurality of ventilation holes 100 configured to allow air to pass through the seat base 12. Therefore, a climate control system may be provided in the seat base 12, which can draw air from or blow air through the seat cushion assembly 22 and the covering fabric 92.

[0059] Still referencing Figure 3 And also refer to Figure 4 and Figure 5 The seat base 12 includes a seat base plate 24 operably connected to and positioned between the seat base frame 14 and the seat cushion assembly 22, wherein a cover fabric 92 is disposed on the seat cushion assembly. The seat base plate 24 may include side support pads 104, which may be integrally formed with or attached to the seat base plate 24. The side support pads 104 are configured to support and bend under stress to provide elasticity to the seat base plate 24. Furthermore, integrally forming the side support pads 104 with the seat base plate 24 increases structural support for the passenger during entry and / or exit from the seat assembly 10 and during bumpy and abusive loading conditions.

[0060] Still referencing Figures 3 to 5 The seat base 24 also includes a rearward support 30, which, together with the side support pad 104, at least partially defines a central opening region 108. The rearward support 30 of the seat base 24 defines an arcuate portion 32 forming a rear engagement channel 110. The rearward support 30 can be configured to operatively connect the seat base 24, and thus the seat base 12, to the seat base frame 14, as further described herein. The surface 114 of the rearward support 30 includes a receiving recess 116 configured to receive a hook 120 of the suspension assembly 122. The suspension assembly 122 is disposed in the central opening region 108 of the seat base 24. The suspension assembly 122 supports the seat cushion assembly 22 and the seat cover fabric 92 and is configured to withstand both static and dynamic loads associated with the movement of the seated passenger. Additionally, the seat base 24 includes a bottom wall 126 having at least one hook-shaped tab 26 extending therefrom in the vehicle's forward direction. Figure 8In the configuration depicted herein, there are a first hook-shaped tab 26a and a second hook-shaped tab 26b, each of which is a forward-extending hook-shaped tab 26. However, it should be understood that more or fewer forward-extending hook features may be contemplated. Thus, the hook-shaped tabs 26 engage the seat base frame 14 to aid in attaching the seat base 12 to the seat base frame 14, as further described herein.

[0061] Still referencing Figure 3 And also refer to Figure 6 The vehicle seat assembly 10 includes a seat base frame 14 that operatively connects a seat base 12 to a vehicle floor 15. When the vehicle seat assembly 10 is assembled, the seat base frame 14 includes a front crossbeam 150 near the thigh support 68 and a rear crossbeam 152 near the bottom portion 54 of the seat back 20. The front crossbeam 150 includes a first end 156a and a second end 156b, which engage a lifting assembly 34 to aid in the vertical displacement of the seat base 12. In other words, the engagement of the front crossbeam 150 with the lifting assembly 34 helps guide the forward portion 16 of the seat base 12 in both upward and downward directions. The rear crossbeam 152 of the seat base frame 14 includes a first end 158a and a second end 158b and can be configured to engage a swivel assembly 162 to adjust the rear portion 18 of the seat base 12 in a generally upward or downward direction, independent of movement of the forward portion 16 of the seat base 12. Additionally, the seat base frame 14 may include a lateral support structure 164. The lateral support structure 164 is positioned on opposite sides of the seat base 12 and extends from the forward portion 16 of the seat base 12 to the rearward portion 18. Therefore, the lateral support structure 164 is positioned close to the guide rail sliding assembly 76. As further described herein, the lateral support structure 164 is configured to engage with the lifting assembly 34 to assist in adjusting the orientation of the seat base 12.

[0062] Still referencing Figure 6 And also refer to Figures 7A to 8 The vehicle seat assembly 10 can be positioned in a seated position (see [reference]) with the assistance of the lifting assembly 34. Figure 11A ) and tilt position (see Figure 11BThe lifting assembly 34 can operate between an engaged position configured to adjust the forward portion 16 of the seat base 12 toward a tilted position in an upward direction and a disengaged position configured to adjust the forward portion 16 of the seat base 12 toward a seated position in a downward direction. In various examples, the lifting assembly 34 includes a motor 168 disposed in a motor housing 170. The motor 168 is located directly below the forward portion 16 of the seat base 12. More specifically, the motor 168 may be centrally located below the forward portion 16 of the seat base 12 relative to the vehicle floor 80. In other words, the motor 168 is centrally located near the lower side of the forward portion 16 of the seat base 12. A pair of motor shafts 172a, 172b extend from opposite ends of the motor 168 and are disposed in the motor housing 170. Motor shafts 172a and 172b extend from each end of motor 168 to engage opposing lifting mechanisms 174a and 174b, each positioned near the guide rail 78 of guide rail assembly 76 and engaging with the inner portion 176 of lateral support structure 164. Each of the opposing lifting mechanisms 174a and 174b includes a base bracket 36 extending from the underside 28 of the forward-facing portion 16 of seat base 24 to vehicle floor 15. Thus, each of the base brackets 36 is positioned near a portion of the guide rail 78 of guide rail assembly 76 and is neither parallel nor perpendicular to said portion. However, it is contemplated that the base brackets 36 may be positioned relative to guide rail assembly 76 in various configurations, including parallel or perpendicular to guide rail assembly 76.

[0063] The base support 36 can be connected to a connector link 178 positioned on the outer portion 180 of the transverse support structure 164 via a first coupling joint 182a and a second coupling joint 182b. In various examples, the base support 36 of the opposing lifting mechanisms 174a, 174b may include an opening 184 at a first end 38a configured to receive one end of the first coupling joint 182a and a bent portion 186 at a second end 38b configured to engage with the second coupling joint 182b. The connector link 178 may include a first bent end 187a and a second bent end 187b. When the first coupling joint 182a extends through the opening 184 of the base support 36, the first coupling joint 182a can engage with the first bent end 187a of the connector link 178. Additionally, when the second connecting joint 182b extends along the curved portion 186 of the base bracket 36, the second connecting joint 182b can engage with the second curved end 187b of the connector rod 178 to help secure and position the lifting mechanisms 174a, 174b to the seat base 12.

[0064] Additionally, the connecting bracket 188 can be connected to the guide rail sliding assembly and can be positioned between the base bracket 36 and the connector link 178. The connecting bracket 188 may include an aperture 190 through which a first connecting joint 182a can extend to engage with the connector link 178. The connecting bracket 188 is configured to facilitate further securing the opposing lifting mechanisms 174a, 174b, and thus the lifting assembly 34, to the seat base.

[0065] Still referencing Figures 6 to 8 Each of the opposing lifting mechanisms 174a and 174b further includes a drive shaft 44 extending along the body 192 of the base bracket 36. The drive shaft 44 may define a thread engaged by a guide nut 46. The thread defined by the drive shaft 44 facilitates movement of the guide nut 46 along the drive shaft 44 and maintains the position of the guide nut 46 when rotation of the drive shaft 44 stops. Thus, the guide nut 46 engages the drive shaft 44 such that when the motor 168 is activated, the position of the guide nut 46 along the drive shaft 44 is adjusted. A first end 194a of the drive shaft 44 may be connected to a lower terminal bracket 42, and a second end 194b of the drive shaft 44 may be connected to an upper terminal bracket 40. Therefore, the lower terminal bracket 42 is located at the first end 38a of the base bracket 36, and the upper terminal bracket 40 is located at the second end 38b of the base bracket 36.

[0066] The lower terminal support 42 may include a body 196a having a base 196b configured to attach to a first end 38a of a base support 36. A top portion of the lower terminal support 42 defines a narrow channel 197 configured to receive a first end 194a of a drive shaft 44. Therefore, the lower terminal support 42 can be wider near the base 196b compared to the top portion. The narrower profile of the top portion of the lower terminal support 42 allows the lower terminal support 42 to align with the body 192 of the base support 36 without extending beyond the body 196a. Thus, when the seat base 12 is in the seated position, one end of the hinged bracket 48 can be positioned above the top of the lower terminal support 43.

[0067] The upper terminal bracket 40 can be disposed on the second end 38b of the base bracket 36. The upper terminal bracket 40 can be generally cylindrical; however, it can be configured in a generally different shape. A through-hole opening is defined by the upper terminal 40 and configured to receive the second end 194b of the drive shaft 44. Alternatively, the upper terminal bracket 40 can be disposed on the second end 38a of the base bracket 36 or can be connected to the anchor bracket 196. Thus, when the upper terminal bracket 40 is connected to the anchor bracket 196, the second end 194b of the drive shaft 44 is configured to extend along the same plane as the first end 194a, such that the drive shaft 44 is positioned parallel to the base bracket 36 but does not abut or engage with the body 192 of the base bracket 36. Therefore, the anchor bracket 196 is connected to the second end 38b of the base bracket 36. Additionally, the anchor bracket 196 includes a body 198 having a base 200, which is connected to the second end 38b of the body 192 of the base bracket 36. Perpendicular sidewalls 202a and 202b extend from the base 200 of the anchor bracket 196. The base 200 and sidewalls 202a and 202b of the anchor bracket 196 partially define a space 204 in which the upper terminal bracket 40 is disposed. The space 204 facilitates access to the upper terminal bracket 40 and the drive shaft 44 during manufacturing or assembly.

[0068] Additionally, in various examples, a hinge bracket 48 is positioned above the top of the opposing lifting mechanisms 174a, 174b. The hinge bracket 48 includes an aperture 205a configured to align with a corresponding opening 205b defined by an end of the motor housing 170. Once aligned, fasteners 206 are received within the aperture 205a and opening 205b, respectively, to secure the motor housing 170, and thus the motor 168 and motor shafts 172a, 172b, to the opposing lifting mechanisms 174a, 174b. Therefore, the hinge bracket 48 is configured to translate longitudinally along the body 192 of the base bracket 36 when the motor 168 is activated. For example, the hinge bracket 48 includes an opening 208 configured to receive one end of the motor shaft 172a. This end of the motor shaft 172a engages with a drive opening 210 defined by a guide nut 46. When the motor 168 is activated, the motor shaft 172a rotates to adjust the position of the guide nut 46.

[0069] Still referencing Figures 6 to 8In various examples, the hinge bracket 48 includes a first end 212a near and engaging with the guide nut 46 and a second end 212b near the lower side 28 of the seat base 24. The second end 212b of the hinge bracket 48 defines an orifice 213 configured to receive a second coupling connector 182b. Thus, when the seat base 12 is operated between a seated position and a reclining position, the engagement of the hinge bracket 48 with the second coupling connector 182b facilitates adjustment of the distance of the seat base 12. In other words, as the lifting assembly 34 moves toward the engaged position, as the guide nut 46 translates along the drive shaft 44 from the lower end bracket 42 to the upper end bracket 40, the hinge bracket 48 engages with the second coupling connector 182b to move longitudinally toward the seat base 12 to adjust the distance of the seat base 12.

[0070] Still referencing Figures 6 to 8 Similar to the forward portion 16 of the seat base 12, the rearward portion 18 of the seat base 12 can be adjusted. In various examples, a first end 158a of the rear crossbeam 152 can be operatively connected to a bracket of the rotating assembly 162, and a second end 158b of the rear crossbeam 152 can be operatively connected to a toothed portion 214 of the rotating assembly 162. The rotating assembly 162 can be described as a rack and pinion assembly. The rotating assembly 162 may include a toothed portion 214 (rack) of a second bracket connected to the seat base frame 14 and a gear (pinion) connected to an actuator. The toothed portion 214 of the second bracket and the gear can form a toothed interface. Actuation of the actuator can rotate the gear, causing the toothed portion 214 of the second bracket to move from a rest position to an extended position. Therefore, as the rotating assembly 162 is adjusted from a rest position to an extended position, the rearward portion 18 of the seat base 12 can be adjusted independently of the forward portion 16 in a generally upward or downward direction. However, it is conceivable that the rear crossbeam 152 may remain fixed or may not include the rotating assembly 162. Thus, the front crossbeam 150 is positioned in the forward position of the vehicle, and the rear crossbeam 152 is positioned in the rearward position of the vehicle.

[0071] Now for reference Figure 9During manufacturing, the seat base 12 is prepared to engage with the seat base frame 14. Specifically, the first hook-shaped tabs 26a and 26b of the seat base 24 are configured to engage the front crossbeam 150 to allow the forward portion 16 of the seat base 12 to rotate about the front crossbeam 150 in a generally downward direction toward the vehicle floor 15. As the seat base 24 continues to rotate about the front crossbeam 150 via the first hook-shaped tabs 26a and 26b, the arcuate portion 32 of the rear support 30 engages with the rear crossbeam 152 of the seat base frame 14. Specifically, as the seat base 12 rotates downward into place, the rear engagement channel 110 of the rear support 30 engages with the rear crossbeam 152. Once engaged, the lifting assembly 34 of the seat base frame 14 can adjust the forward portion 16 of the seat base 12, and the rotating assembly 162 of the seat base frame 14 can adjust the forward portion 16 and the rear portion 18 of the seat base 12 to the seated position and the reclined position, from the seated position and the reclined position, or between the seated position and the reclined position.

[0072] Now for reference Figure 10A and Figure 10B The vehicle seat assembly 10 is movable from a seated position to a reclining position. The reclining position of the vehicle seat assembly 10 is intended for use when the vehicle 11 is stationary (i.e., not moving), for example, when the transmission of the vehicle 11 is in the parking position. Therefore, changing from the seated position to the reclining position, changing from the reclining position to the seated position, and changing between the seated and reclining positions involves adjusting the position of the guide nut 46 along the drive shaft 44 of the lifting mechanisms 174a, 174b, such that the guide nut 46 moves toward the upper end bracket 40 away from the lower end bracket 42. Thus, the translation of the guide nut 46 along the drive shaft 44 adjusts the position of the hinge bracket 48 to help adjust the position of the seat base between the seated and reclining positions. Therefore, when the vehicle seat assembly 10 changes from the seated position to the reclining position, the angle between the lifting assembly 34 and the guide rail sliding assembly 76 can increase. Additionally, changing the vehicle seat assembly 10 from a seated position to a reclining position may include rotating the swivel assembly 162 toward the rear crossbeam 152 toward the guide rail sliding assembly 76. Therefore, when the vehicle seat assembly 10 is changed from a seated position to a reclining position, the angle between the swivel assembly 162 and the guide rail sliding assembly 76 can be reduced.

[0073] Still referencing Figure 10A and Figure 10B And also refer to Figure 11A and Figure 11BIn operation, when the vehicle seat assembly 10 is adjusted from a seated position to a reclined position, the motor 168 is activated. Activation of the motor 168 initiates rotation of motor shafts 172a and 172b. For example, motor shafts 172a and 172b rotate clockwise to adjust lifting mechanisms 174a and 174b in the upward direction relative to the vehicle floor 15. As the motor shafts 172a and 172b rotate, the guide nut 46 is configured to translate threadedly along the drive shaft 44 from the lower end bracket 42 to the upper end bracket 40. Therefore, the motor 168 and motor shafts 172a and 172b are adjusted in the upward direction perpendicular to and together with the guide nut 46. Thus, as the guide nut 46 translates along the drive shaft 44, the hinge bracket 48 translates along the body 192 of the base bracket 36, which engages with the second coupling joint 182b, to initiate adjustment of the seat base 12 in the upward direction. As the guide nut 46 reaches the upper terminal bracket 40, the hinge bracket 48 continues to adjust the seat base 12 in the upward direction via the second connecting joint 182b.

[0074] Similarly, when the vehicle seat assembly 10 is adjusted from a reclined position to a seated position, the motor 168 is activated. Activation of the motor 168 initiates rotation of motor shafts 172a and 172b. Therefore, motor shafts 172a and 172b rotate counterclockwise to adjust the lifting mechanisms 174a and 174b in the downward direction relative to the vehicle floor 15. As the motor shafts 172a and 172b rotate, the guide nut 46 is configured to translate threadedly along the drive shaft 44 from the upper end bracket 40 to the lower end bracket 42. Therefore, the motor 168 and motor shafts 172a and 172b are adjusted relative to the vehicle floor 15 in the downward direction perpendicular to the guide nut 46. Thus, as the guide nut 46 translates along the drive shaft 44, the hinge bracket 48 translates along the body 192 of the base bracket 36, which engages with the second coupling joint 182b, to begin adjusting the seat base 12 in the downward direction. As the guide nut 46 reaches the lower terminal bracket 42, the hinge bracket 48 continues to adjust the seat base 12 in the downward direction via the second connecting joint 182b.

[0075] Still referencing Figures 10A to 11B In the reclining position, the angular relationship between the seat base 12 and the vehicle floor 80 can be adjusted. When the vehicle seat assembly 10 changes from the seated position to the reclining position, a first distance between the forward portion 16 of the seat base 12 and the vehicle floor 15 can be increased. Therefore, when the vehicle seat assembly 10 changes from the seated position to the reclining position, a second distance between the rearward portion 18 of the seat base 12 and the vehicle floor 15 can be increased. In various examples, when the vehicle seat assembly 10 changes to the reclining position, the angular relationship of each component located between the seat base 12 and the vehicle floor 15 relative to the vehicle floor 15 can be adjusted.

[0076] When the vehicle seat assembly 10 is rotated from a seated position to a reclining position, a first distance between the lower side 28 of the forward portion 16 of the seat base 12 and the vehicle floor 80 can be increased. In various examples, rotating the vehicle seat assembly 10 from a seated position to a reclining position can incrementally increase the first distance between the lower side of the forward portion of the seat base and the vehicle floor 80, such that the seat base 12 is positioned at an angle relative to the vehicle floor 80. In other words, the first distance is the maximum distance that the forward portion 16 of the seat base 12 can be adjusted. In other words, the first distance can position the seat base 12 at an angle between approximately 19° and approximately 22° relative to the vehicle floor 80. However, before the seat base 12 reaches the first distance, the forward portion of the seat base 12 can be incrementally positioned relative to the vehicle floor 80 at an angle between approximately 1° and approximately 18°. Therefore, when the lower side 28 of the seat floor 24 near the forward portion 16 of the seat base 12 reaches the first distance with the vehicle floor 15, the seat base 12 is raised at a ratio of 2.5:1 to 3:1. In other words, when the seat base 12 is positioned at the first distance, the seat base 12 can be in its maximum tilt position. Therefore, as the seat base 12 adjusts from and / or between the first distances, the seat back 20 can rotate in the rearward direction of the vehicle to a second distance between the bottom portion 54 of the seat back 20 and the vehicle floor 80. Therefore, when the seat assembly 10 is in the seated position, the angle between the seat base 12 and the vehicle floor 15 can be approximately zero.

[0077] Additionally, shifting the vehicle seat assembly 10 from a seated position to a reclining position may include rotating the seat back 20 from the seated position in the rearward direction of the vehicle, such that an angle between approximately 30° and approximately 54° can be achieved between the seat back 20 and the vehicle floor 15. Therefore, shifting the vehicle seat assembly 10 from a seated position to a reclining position may include reducing the second distance between the rearward portion 18 of the seat base 12 and the vehicle floor 80.

[0078] When the vehicle seat assembly 10 is in a tilted position via the lifting assembly 34, a neutral positioning capability is achieved. The neutral position of the vehicle seat assembly 10 can simulate a posture that minimizes gravitational stress on the body, thereby further reducing strain on the spine and promoting optimal weight distribution. To achieve this, the lifting assembly 34 can be adjusted using additional hinge points and degrees of freedom, thereby allowing adjustment of the angles of the seat base 12 and the seat back 20.

[0079] Referring to Figure 10, the vehicle seat assembly 10 may include a controller 220 having a processor 222 (such as a microprocessor), a memory 224, and other digital and / or analog control circuitry. Instructions or programs 226 are stored in the memory 224 and can be executed by the processor 222. The controller 220 communicates with a user interface, which may include a display, such as a touchscreen with inputs and outputs, or other selectable features 230 (e.g., buttons, switches, knobs, etc.). A passenger or user can input a selection regarding the positioning of the vehicle seat assembly 10 between a seated position and a reclined position into the user interface. The input is transmitted to the controller 220, which can then activate a motor 168.

[0080] The controller 220 may include a program 226 for managing the transition between a seated position and a reclined position of the vehicle seat assembly 10. When a passenger interacts with the selectable feature 230, the controller 220 may activate a lifting assembly 34 positioned near the lower side 28 of the seat base 24. The controller 220 may then coordinate the movement of opposing linkages 174a, 174b via a motor 168, including the rotation of a guide nut 46 along a drive shaft 44. Simultaneously, the controller 220 may adjust the angle of the seat back 20, thereby rotating the seat back 20 in the rearward direction of the vehicle.

[0081] Using the devices and systems of the present invention offers a variety of advantages. For example, vehicle seat assemblies are generally designed to meet numerous specifications determined by their use within the passenger compartment of vehicle 11. These specifications include, but are not limited to, spatial considerations within the passenger compartment, the packaging of user-desired features, and balancing the user experience (e.g., legroom) for multiple users within the passenger compartment. The vehicle seat assembly 10 of the present disclosure can operate in a tilted position, which can reduce the number and / or intensity of pressure points for users seated in the vehicle seat assembly 10, while providing a more ergonomic and comfortable arrangement than a conventional tilted position in which the seat back 20 can move in an isolated manner relative to the seat and vehicle floor 80. The tilted position of the vehicle seat assembly 10 of the present disclosure can position the seat back 20 relative to the vehicle floor 80 and / or the seat in a tilted position. Additionally, compared to the seated position, the tilted position of the vehicle seat assembly 10 of the present disclosure can position the forward portion 16 of the seat base 12 relative to the vehicle floor 80 in a tilted position.

[0082] It should be understood that changes and modifications may be made to the foregoing structures without departing from the concept of this disclosure, and it should also be understood that such concepts are intended to be covered by the following claims unless otherwise expressly stated in their language.

[0083] According to the present invention, a vehicle seat assembly is provided, comprising: a seat base operably coupled to a vehicle floor, the seat base including a forward portion and a rearward portion; and a lifting assembly operably coupled to the seat base, wherein the lifting assembly is vertically operable between an engaged position and a disengaged position to vertically adjust the forward portion of the seat base when in the engaged position, the lifting assembly including: a base bracket extending between the seat base and the vehicle floor, wherein the base bracket includes a first end and a second end; a first terminal bracket and a second terminal bracket. A bracket, wherein the first terminal bracket is disposed on the first end of the base bracket, and the second terminal bracket is disposed on the second end of the base bracket; an actuator operatively coupled to the base bracket; a drive shaft operatively coupled to the actuator, wherein the drive shaft extends between the first terminal bracket and the second terminal bracket; and a hinge bracket operatively coupled to the drive shaft, wherein the hinge bracket is configured to translate along the drive shaft via the actuator to adjust the forward portion of the seat base when the lifting assembly is in the engaged position.

[0084] According to an embodiment, the invention is further characterized by: a guide rail assembly including a guide rail supported by the vehicle floor and a slider operably connected to the seat base, wherein the slider slidably engages with the guide rail in a longitudinal direction to adjust the position of the seat base; and a lateral support structure positioned on opposite sides of the seat base, wherein the lateral support structure extends close to the guide rail assembly between the forward and rearward portions of the seat base.

[0085] According to an embodiment, the base bracket is positioned on the inner portion of the transverse support structure and is operatively connected to a connector rod positioned on the outer portion of the transverse support structure.

[0086] According to an embodiment, the first end of the base bracket defines an opening, and the second end defines a bent portion, wherein the connector rod includes a first bent end and a second bent end.

[0087] According to an embodiment, a first coupling extends through the opening of the base bracket to engage with the first bent end of the connector rod, and a second coupling extends along the bent portion of the base bracket to engage with the second bent end of the connector rod.

[0088] According to an embodiment, the hinge bracket includes a first end and a second end, wherein the first end is operatively coupled to the drive shaft, and the second end defines an orifice configured to receive the second coupling connector.

[0089] According to an embodiment, a connecting bracket is connected to the guide rail assembly located between the base bracket and the connector rod, wherein the connecting bracket defines an orifice configured to receive one end of the first connecting joint to secure the lifting assembly.

[0090] According to an embodiment, the present invention is further characterized by: an anchoring bracket, the anchoring bracket being connected to the second end of the base bracket, wherein the first terminal bracket is connected to the anchoring bracket.

[0091] According to an embodiment, the lifting assembly includes a motor and a motor shaft, wherein the motor shaft extends from one end of the motor to engage with a guide nut.

[0092] According to an embodiment, the motor and the motor shaft are disposed in a motor housing, wherein the motor housing is operatively connected to the hinge bracket of the lifting assembly.

[0093] According to an embodiment, the seat base is operable between a seated position and a tilted position.

[0094] According to an embodiment, the tilt position includes reducing a second distance between the seat back and the vehicle floor.

[0095] According to an embodiment, the invention is further characterized by: a guide nut, which is threadedly engaged with the drive shaft, wherein the guide nut is configured to translate along the drive shaft between the first terminal bracket and the second terminal bracket.

[0096] According to an embodiment, the seat base is operatively coupled to a rotating assembly, wherein the rotating assembly is configured to adjust the rearward portion of the seat base.

[0097] According to the present invention, a vehicle seat assembly is provided, comprising: a seat base operably coupled to a vehicle floor, the seat base including a forward portion and a rearward portion, wherein the seat base is operable between a seated position and a reclined position; a lifting assembly operably coupled to a seat base frame, wherein the lifting assembly is configured to vertically adjust the seat base relative to the vehicle floor when the seat base is operable between the seated position and the reclined position, the lifting assembly comprising: a base bracket including a body; an actuator operably coupled to the base bracket; and a hinge bracket operably coupled to the forward portion of the seat base, wherein the hinge bracket is configured to translate along the length of the body of the base bracket via the actuator to adjust the seat base between the seated position and the reclined position.

[0098] According to an embodiment, the invention is further characterized by: a first terminal bracket and a second terminal bracket disposed on the main body of the base bracket, a drive shaft extending between the first terminal bracket and the second terminal bracket, wherein the drive shaft includes a first end and a second end, and a guide nut threadedly engaged with the drive shaft, wherein the guide nut is configured to translate along the drive shaft from the first terminal bracket to the second terminal bracket to vertically adjust the forward portion of the seat base.

[0099] According to an embodiment, the first terminal bracket defines a channel configured to receive the first end of the drive shaft, and wherein the second terminal bracket defines an aperture to receive the second end of the drive shaft, such that the drive shaft extends along the body of the base bracket.

[0100] According to the present invention, a modular seat assembly for a vehicle is provided, comprising: a seat base frame operably coupled to a vehicle floor; a seat base including a forward portion and a rearward portion, wherein the seat base is operable between a seated position and a reclining position; a lifting assembly operably coupled to the seat base frame, wherein the lifting assembly is configured to adjust the seat base by a distance when the seat base is operated between the seated position and the reclining position, the lifting assembly comprising: a motor assembly disposed at a central position between the forward portion of the seat base and the vehicle floor near the lower side of the seat base, wherein the motor assembly includes a motor and a motor shaft extending from the motor; and a hinge bracket operably coupled to the motor assembly, the hinge bracket being configured to vertically adjust the forward portion of the seat base relative to the vehicle floor, wherein when the lifting assembly is engaged, the forward portion of the seat base is adjusted away from the vehicle floor.

[0101] According to an embodiment, the invention is further characterized by: a base bracket having a first end and a second end, wherein the base bracket extends between the forward portion of the seat base and the vehicle floor, and wherein the drive shaft extends along the base bracket; a first terminal bracket disposed on the first end of the base bracket; and a second terminal bracket disposed on the second end of the base bracket, wherein the guide nut is configured to translate along the drive shaft between the first terminal bracket and the second terminal bracket when the seat base changes between the seated position and the tilted position.

[0102] According to an embodiment, when the seat base is in the tilted position, the distance between the forward portion of the seat base and the vehicle floor positions the seat base at an angle relative to the vehicle floor.

Claims

1. A vehicle seat assembly comprising: a seat base operably coupled to a vehicle floor, the seat base including a forward portion and an aft portion; and a lift assembly operably coupled with the seat base, wherein the lift assembly is vertically operable between an engaged position and a disengaged position to vertically adjust the forward portion of the seat base when in the engaged position, the lift assembly including: a base bracket extending between the seat base and the vehicle floor, wherein the base bracket includes a first end and a second end; a first terminal bracket disposed on the first end of the base bracket and a second terminal bracket disposed on the second end of the base bracket; an actuator operably coupled to the base bracket; a drive shaft operably coupled to the actuator, wherein the drive shaft extends between the first terminal bracket and the second terminal bracket; and an articulating bracket operably coupled to the drive shaft, wherein the articulating bracket is configured to translate along the drive shaft via the actuator to adjust the forward portion of the seat base when the lift assembly is in the engaged position.

2. The vehicle seat assembly of claim 1, further comprising: a rail assembly including a rail supported by the vehicle floor and a slider operably coupled with the seat base, wherein the slider is slidably engaged with the rail along a longitudinal direction to adjust a position of the seat base; and a lateral support structure positioned on opposite sides of the seat base, wherein the lateral support structure extends proximate the rail assembly between the forward portion and the aft portion of the seat base.

3. The vehicle seat assembly of claim 2, wherein the base bracket is positioned on an inner portion of the lateral support structure and is operably coupled to a connector link positioned on an outer portion of the lateral support structure.

4. The vehicle seat assembly of claim 3, wherein the first end of the base bracket defines an opening and the second end defines a curved portion, and wherein the connector link includes a first curved end and a second curved end.

5. The vehicle seat assembly of claim 4, wherein a first coupling joint extends through the opening of the base bracket to engage the first curved end of the connector link and a second coupling joint extends along the curved portion of the base bracket to engage the second curved end of the connector link.

6. The vehicle seat assembly of claim 5, wherein the articulating bracket includes a first end and a second end, and wherein the first end is operably coupled to the drive shaft and the second end defines an aperture configured to receive the second coupling joint.

7. The vehicle seat assembly of claim 5, wherein a coupling bracket is coupled to the rail assembly between the base bracket and the connector link, wherein the coupling bracket defines an aperture configured to receive an end of the first coupling joint to secure the lift assembly.

8. The vehicle seat assembly of claim 1, further comprising: an anchor bracket coupled to the second end of the base bracket, wherein the first terminal bracket is coupled to the anchor bracket.

9. The vehicle seat assembly of any one of claims 1-8, wherein the lift assembly includes a motor and a motor shaft, and wherein the motor shaft extends from an end of the motor to engage a lead screw nut.

10. The vehicle seat assembly of claim 9, wherein the motor and the motor shaft are disposed in a motor housing, and wherein the motor housing is operably coupled to the articulating bracket of the lift assembly.

11. The vehicle seat assembly of claim 1, wherein the seat base is operable between a seated position and a reclined position.

12. The vehicle seat assembly of claim 11, wherein the reclined position includes reducing a second distance between the seat back and the vehicle floor.

13. The vehicle seat assembly of claim 11, further comprising: a lead screw nut threadably engaged with the drive shaft, wherein the lead screw nut is configured to translate along the drive shaft between the first terminal bracket and the second terminal bracket.

14. The vehicle seat assembly of claim 1, wherein the seat base is operably coupled to a rotation assembly, and wherein the rotation assembly is configured to adjust the rearward portion of the seat base.

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