MODULAR VEHICLE SEAT ASSEMBLY

Abstract

A vehicle seat assembly comprises a seat base operably coupled to a vehicle floor and a lifting assembly operably coupled to the seat base, wherein the lifting assembly is operable vertically between an engaged position and a disengaged position to vertically adjust a front portion of the seat base when it is in the engaged position.The lifting assembly comprises a base support extending between the seat base and the vehicle floor, a first end support located at a first end of the base support, a second end support located at a second end of the base support, a drive shaft extending between the first end support and the second end support, and an articulating support operably coupled to the drive shaft, the articulating support being configured to move along the drive shaft to adjust the front portion of the seat base when the lifting assembly is in the engaged position.

Description

CROSS-REFERENCE TO RELATED REGISTRATIONS

[0001] This application claims priority from US 63 / 689 260, filed on August 30, 2024, entitled “MODULAR VEHICLE SEATING ASSEMBLY”, the disclosure of which is hereby incorporated in full into this document by reference. AREA OF REVELATION

[0002] The present disclosure relates generally to a seat assembly for a vehicle and in particular to a lifting assembly for the vehicle seat assembly. GENERAL STATE OF THE ART

[0003] Vehicle seat assemblies generally comprise seat structures configured to support the static and dynamic weight of an occupant during travel. These seat structures are often complex and are assembled piece by piece at a manufacturing site. SUMMARY OF THE REVELATION

[0004] According to a first aspect of the present disclosure, a vehicle seat assembly comprises a seat base operably coupled to a vehicle floor and comprising a front section and a rear section, and a lifting assembly operably coupled to the seat base, wherein the lifting assembly is operable vertically between an engaged position and a disengaged position in order to vertically adjust the front section of the seat base when it is in the engaged position.The lifting assembly includes a base support extending between the seat base and the vehicle floor, the base support comprising a first end and a second end, a first end support located at the first end of the base support, and a second end support located at the second end of the base support, a drive shaft extending between the first end support and the second end support, and an articulating support operably coupled to the drive shaft, the articulating support being configured to move along the drive shaft to adjust the front portion of the seat base when the lifting assembly is in the engaged position.

[0005] Embodiments of the first aspect of the present disclosure may include any one or a combination of the following features: - a rail assembly comprising rails supported by the vehicle floor and sliding supports operably coupled to the seat base, the sliding supports being in sliding engagement with the rails 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, the lateral support structures extending between the front section and the rear section of the seat base in close proximity to the rail assembly; - the base bracket is positioned on an inner section of the lateral support structure and is operably coupled to a connector that is positioned on an outer section of the lateral support structure; - the first end of the base bracket defines an opening and the second end defines a curved section, wherein the connector includes a first curved end and a second curved end; - a first coupling connector extends through the opening of the base bracket to engage with the first curved end of the connector link, and a second coupling connector extends along the curved section of the base bracket to engage with the second curved end of the connector link; - Vehicle seat assembly according to claim 4, wherein a first coupling connecting piece extends through the opening of the base mount to engage with the first curved end of the connector member, and a second coupling connecting piece extends along the curved section of the base mount to engage with the second curved end of the connector member; - the joint mount includes a first end and a second end, wherein the first end is operably coupled to the drive shaft and the second end defines a passage configured to receive the second coupling connector; - a coupling bracket is coupled to the rail assembly, which is positioned between the base bracket and the connector link, the coupling bracket defining a passage configured to receive one end of the first coupling connector to secure the lifting assembly; - an anchor bracket coupled to the second end of the base bracket, with the first end bracket coupled to the anchor bracket; - the lifting assembly includes a motor and a motor shaft, wherein the motor shaft extends from one end of the motor to engage with the lead nut; - the motor and the motor shaft are arranged in a motor housing, and the motor housing is operably coupled to the articulated mounting of the lifting assembly; - the seat base can be operated in either a seated or a reclined position; - the reclined position involves reducing a second distance between the backrest and the vehicle floor; - a guide nut that engages in threaded contact with the drive shaft, the guide nut being configured to slide along the drive shaft between the first end bracket and the second end bracket; and - the seat base is operably coupled to a rotary assembly, and the rotary assembly is configured to adjust the rear section of the seat base.

[0006] According to a second aspect of the present disclosure, a vehicle seat assembly comprises a seat base that is operably coupled to a vehicle floor and includes a front section and a rear section. The seat base is operable between a seated position and a reclined position, wherein a lifting assembly is operably coupled to the seat base frame, the lifting assembly being configured to adjust the seat base vertically relative to the vehicle floor when the seat base is operated between the seated and reclined positions. The lifting assembly includes a base support comprising a body and an articulated support, which is operably coupled to the front section of the seat base, the seat base being configured to slide along a length of the body of the base support to adjust the seat base between the seated and reclined positions.

[0007] Embodiments of the second aspect of the present disclosure may include any one or a combination of the following features: - a first end bracket and a second end bracket arranged on the body of the base bracket, a drive shaft extending between the first end bracket and the second end bracket, the drive shaft comprising a first end and a second end, and a guide nut engaging in threaded engagement with the drive shaft, the guide nut configured to slide along the drive shaft from the first end bracket to the second end bracket in order to vertically adjust the front portion of the seat base; and - the first end support defines a channel configured to receive the first end of the drive shaft, and wherein the second end support defines a passage to receive the second end of the drive shaft, such that the drive shaft extends along the body of the base support.

[0008] According to a third aspect of the present disclosure, a modular seat assembly for a vehicle includes a seat base frame that is operably coupled to a vehicle floor, a seat base comprising a front section and a rear section, wherein the seat base is operable between a seated position and a reclined position, and a lifting assembly that is 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 reclined position.The lifting assembly includes a motor assembly located near the underside of the seat base at a midpoint between the front portion of the seat base and the vehicle floor. The motor assembly includes a motor and a motor shaft extending from the motor, and an articulated mount operably coupled to the motor assembly and configured to vertically adjust the front portion of the seat base relative to the vehicle floor. When the lifting assembly is engaged, the front portion of the seat base is adjusted away from the vehicle floor. Embodiments of the second aspect of this disclosure may include any one or a combination of the following features: - a base bracket having a first end and a second end, wherein the base bracket extends between the front portion of the seat base and the vehicle floor, and wherein the drive shaft extends along the base bracket, a first end bracket located at the first end of the base bracket, and a second end bracket located at the second end of the base bracket, wherein the guide nut is configured to move along the drive shaft between the first end bracket and the second end bracket as the seat base transitions between the seated position and the reclined position; and - The distance of the seat base between the front section and the vehicle floor positions the seat base at an angle relative to the vehicle floor when the seat base is in the reclined position.

[0009] These and other features, advantages and functions of the present disclosure are better understood and comprehended by the person skilled in the art by reference to the following description, patent claims and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following applies to the drawings: Fig. Figure 1 is a side perspective partial view of a vehicle seat assembly within the interior of a vehicle; Fig. Figure 2 is a side perspective view of a vehicle seat assembly that includes a seat base pivotally coupled to a backrest; Fig. Figure 3 is an expanded view of a seat base and seat base frame for a vehicle seat assembly comprising a cover fabric, seat cushion assembly, suspension assembly, lifting assembly and seat shell; Fig. Figure 4 is a side perspective view of a seat shell that includes a suspension assembly located in an open intermediate area of ​​the seat shell; Fig. Figure 5 is a side elevation view of a seat shell that includes a rear support defining an arc-shaped section; Fig. Figure 6 is a side perspective view of a seat base frame incorporating a lifting assembly; Fig. Figure 7A is a side perspective view of a lifting assembly comprising a motor and a pair of motor shafts extending from the motor, and opposing lifting mechanisms operably coupled to the motor shafts; Fig. Figure 7B is a side perspective view of a lifting assembly with a motor housing and a joint mount removed; Fig. Figure 8 is an expanded view of a section of a lifting assembly comprising opposing lifting mechanisms, including a base support, a drive shaft, a guide nut and a joint support; Fig. Figure 9 is a side perspective view of a vehicle seat assembly comprising a seat shell engaged with a front cross member and a rear cross member; Fig. 10A is a side perspective partial view of a lifting mechanism of a lifting assembly which is operabably coupled to a seat base frame when the seat base is in a seated position; Fig. Figure 10B is a side perspective partial view of a lifting mechanism of a lifting assembly which is operabably coupled to a seat base frame when the seat base is in a reclined position; Fig. 11A is a side perspective view of a vehicle seat assembly which includes a lifting assembly which is operabably coupled to a seat base frame when the vehicle seat assembly is in a seated position; Fig. Figure 11B is a side perspective view of a vehicle seat assembly that includes a lifting assembly which is operabably coupled to a seat base frame when the vehicle seat assembly is in a reclined position; and Fig. Figure 12 is a block diagram of a control arrangement for a vehicle seat assembly. DETAILED DESCRIPTION OF PREFERRED EXECUTION FORMS

[0011] Detailed reference is now made to the present preferred embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numerals are used in the drawings to denote identical or similar parts. In the drawings, the structural elements depicted are not to scale, and certain components are enlarged relative to the other components for the purpose of emphasis and clarity. In accordance with the requirements, detailed embodiments of the present disclosure are disclosed in this document; however, it is understood that the disclosed embodiments are merely examples of the disclosure, which can be implemented in various and alternative forms.The figures do not necessarily represent a detailed illustration; some schematic diagrams may be enlarged or reduced to show a functional overview. Therefore, specific structural and functional details disclosed in this document should not be interpreted as restrictive, but merely as a representative basis to teach the skilled person the diverse applications of the present disclosure.

[0012] For the purposes of description in this text, the terms "above", "below", "right", "left", "back", "front", "vertical", "horizontal" and derivatives thereof refer to the concepts in their orientation in Fig. 1. It is understood, however, that the concepts can assume various alternative orientations unless expressly stated otherwise. It is also understood that the specific devices and processes illustrated in the accompanying drawings and described in the following description are merely exemplary embodiments of the concepts according to the invention as defined in the accompanying claims. Therefore, specific dimensions and other physical properties relating to the embodiments disclosed in this document are not to be considered limiting unless expressly stated otherwise in the claims.

[0013] The embodiments illustrated herein primarily consist of combinations of process steps and equipment components related to a lifting assembly for a vehicle seat assembly. Accordingly, the equipment components and process steps are represented in the drawings, where appropriate, by conventional symbols, showing only those specific details relevant to understanding the embodiments of this disclosure, so as not to obscure the disclosure with details that are readily apparent to the person skilled in the art from the present description. Furthermore, identical reference numerals in the description and the drawings denote identical elements.

[0014] In this context, the expression "and / or" when used in a list of two or more elements means that each of the listed elements can be used individually, or any combination of two or more of the listed elements can be used. For example, if a composition is described as containing components A, B, and / or C, the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination.

[0015] In this writing, reference terms such as first and second, upper and lower, and the like are used merely to distinguish one unit or action from another, without necessarily requiring or implying any actual relationship or order of such unit or action between such units or actions. It is intended that the terms "includes," "comprehensive," or any other variation thereof cover non-exclusive inclusion, such that a process, procedure, article, or facility comprising an enumeration of elements may include not only those elements but may also include other elements not expressly listed or inherent in such process, procedure, article, or facility. An element that "includes..."The presence of “ein” does not, without further limitations, preclude the presence of additional identical elements in the process, procedure, article or facility that includes the element.

[0016] In the sense used in this document, the term "approximately" means that quantities, sizes, formulations, parameters, and other quantities and properties are not exact and need not be, but may be approximate and / or larger or smaller if desired, and may reflect tolerances, conversion factors, rounding, measurement errors, and the like, and other factors known to the person skilled in the art. When the term "approximately" is used to describe a value or an endpoint of a range, the disclosure should be understood as including the specific value or endpoint to which reference is made. Regardless of whether a numerical value or an endpoint of a range contains "approximately" in the description, the numerical value or endpoint of a range is intended to include two embodiments: one modified by "approximately" and one not modified by "approximately".It is further understood that the endpoints of each of the areas are significant both with respect to the other endpoint and independently of the other endpoint.

[0017] The terms "essentially," "substantially," and variations thereof are used in this context to indicate that a described feature is equal to or nearly equal to a value or description. For example, a "substantially flat" surface means that a surface is flat or nearly flat. Furthermore, "substantially" means that two values ​​are equal to or nearly equal to each other. In some embodiments, "substantially" may denote values ​​within approximately 10% of each other, such as within approximately 5% of each other or within approximately 2% of each other.

[0018] In the present context, the terms "the", "a", "a", or "a" mean "at least one" and should not be limited to "just one" unless expressly stated otherwise. Thus, for example, a reference to "one component" includes embodiments having two or more such components, unless the context clearly indicates otherwise.

[0019] With reference to Fig. Reference numeral 10 generally denotes a seat assembly for a vehicle 11, comprising 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 comprises a front section 16 and a rear section 18. A backrest 20 is rotatably coupled to the seat base 12 near the rear section 16. A seat cushion assembly 22 is coupled to a seat shell 24. The seat shell 24 includes at least one hook tab 26 located on a bottom surface 28 of the seat shell 24. The seat shell 24 also includes a rear support 30 defining an arcuate section 32.A lifting assembly 34 is operable coupled to the seat base 12 and is operable vertically between an engaged position and a disengaged position to vertically adjust the front section 16 of the seat base 12 when it is in the engaged position. The lifting assembly 34 includes a base support 36 that extends between a bottom of the seat base 12 and the vehicle floor 15. The base support 36 includes a first end 38a and a second end 38b. An upper end support 40 is located at the first end 38a of the base support 36, and a lower end support 42 is located at the second end 38b of the base support 36. A drive shaft 44 extends between the upper end support 40 and the lower end support 42. A guide nut 46 engages threadedly with the drive shaft 44 and is configured to slide along the drive shaft 44.A joint bracket 48 is operably coupled to the lead nut 46. The joint bracket 48 is configured to move along the drive shaft 44 via the lead nut 46 to adjust the front section 16 of the seat base 12 when the lifting assembly 34 is in the engaged position.

[0020] With reference to Fig. The vehicle 11 includes an interior 50 containing at least one seating assembly 10 to support passengers. The vehicle 11 can be a sedan, an SUV, a van, a truck, a crossover, another type of wheeled vehicle, or another type of vehicle. The vehicle 11 can be a manually operated vehicle (e.g., operated by a human driver), a fully autonomous vehicle (e.g., operated without a human driver), or a semi-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 ride-hailing services (e.g., chauffeuring), transportation, and / or ride-sharing services.

[0021] Still with reference to Fig. 1 as well as Fig. The vehicle seat assembly 10 comprises the seat base 12, which has a front section 16 and a rear section 18, and the backrest 20, which has an upper section 52 and a lower section 54. The rear section 18 of the seat base 12 is positioned near the lower section 54 of the backrest 20, allowing the backrest 20 to pivot relative to the rear section 18 of the seat base 12. The backrest 20 includes both an upper backrest 56 and a lower backrest 58. The vehicle seat assembly 10 includes a headrest 60, which is located on the upper backrest 56. The headrest 60 is movable between a forward and a rearward position to accommodate passengers of different head sizes and heights.The vehicle seat assembly 10 also includes control elements 61 which are specifically configured to adjust an upper chest section 62 of the upper backrest 56 or a lower lumbar section 64 of the lower backrest 58.

[0022] The vehicle seat assembly 10 can include a variety of comfort controls, such as a calf support 66, a thigh support 68, and a swivel control that allows the backrest 20 to swivel. Additionally, a receptacle 74 for a restraint cable assembly is provided on the vehicle seat assembly 10 to secure the passenger when seated. The vehicle seat assembly 10 is also connected to a rail slide assembly 76 ( Fig. 6) suspended, which allows movement of the vehicle seat assembly 10 in a forward and backward direction relative to the vehicle 11. The rail slide assembly 76 includes rails 78, which can be secured to the vehicle floor 15. In various examples, the rail slide assembly 76 can be coupled to the vehicle floor 15 by one or more legs 81. The legs 81 can be coupled to the rails 78 of the rail slide assembly 76. Additionally, the rail slide assembly 76 includes slide supports 82, which can be operably coupled to the vehicle seat assembly 10, in particular the seat base frame 14. The sliding supports 82 are in sliding engagement with the rails 78. The sliding movement of the sliding supports 82 relative to the rails 78 along a longitudinal direction is able to adjust the relative position of the seat base 12, the backrest 20 and the lifting assembly 34 relative to the rail sliding assembly 76 and / or the legs 81.Accordingly, a front fairing component and side fairing pieces 88 can be arranged around the seat base 12, and base fairing pieces 90 can be arranged around the seat base frame 14. The fairing components cover the seat base frame 14 and structural components of the seat base 12, such as the rail slide assembly 76.

[0023] With reference to Fig. The seat base 12 comprises the seat cushion assembly 22 with a cover fabric 92 arranged on it. The cover fabric 92 can include different variations over different sections of the seat cushion assembly 22. The seat cushion assembly 22 of the seat base 12 includes a main cushion 94, seat side cushions 96, and a thigh support cushion 98. The thigh support cushion 98 is configured to wrap around the thigh support 68 to provide comfort while supporting the passenger's thighs. The main cushion 94 and / or the side cushions 96 can include a variety of ventilation holes 100 configured to allow air to flow through the seat base 12. Accordingly, a climate control system can be provided in the seat base 12 that can draw air from or blow air through the seat cushion assembly 22 and the cover fabric 92.

[0024] Still with reference to Fig. 3 as well as Fig. 4 and Fig. The seat base 12 comprises the seat shell 24, which is operably coupled to the seat base frame 14 and positioned between the seat base frame 14 and the seat cushion assembly 22 with the cover fabric 92 arranged on it. The seat shell 24 may include side cushions 104, which may be formed integrally with the seat shell 24 or attached to it. The side cushions 104 are configured to provide support and flex under load to give elasticity to the seat shell 24. In addition, forming the side cushions 104 integrally with the seat shell 24 increases the structural support for the passenger when sitting down on and / or standing up from the seat assembly 10, as well as during compression and excessive load situations.

[0025] Still with reference to Fig. 3-5 The seat shell 24 further includes the rear support 30, which, together with the side cushions 104, defines at least a partial open intermediate area 108. The rear support 30 of the seat shell 24 defines the arcuate section 32, which forms a rear engagement channel 110. The rear support 30 can be configured to couple the seat shell 24, and consequently the seat base 12, operably to the seat base frame 14, as described in more detail herein. A surface 114 of the rear support 30 includes receiving notches 116 configured to receive hooks 120 of a suspension assembly 122. The suspension assembly 122 is arranged in the open intermediate area 108 of the seat shell 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 driving with a seated passenger.Additionally, the seat shell 24 includes a lower wall 126, which has at least one hook tab 26 extending from it in a vehicle-forward direction. In the illustrated configuration, shown in . Fig. As shown in Figure 8, there is a first hook tab 26a and a second hook tab 26b, each of which is a forward-extending hook tab 26. It is understood, however, that more or less forward-extending hook features can be considered. Accordingly, the hook tabs 26 engage the seat base frame 14 to assist in coupling the seat base 12 to the seat base frame 14, as described in more detail herein.

[0026] Still with reference to Fig. 3 as well as Fig. The vehicle seat assembly 10 includes the seat base frame 14, which operably couples the seat base 12 to the vehicle floor 15. The seat base frame 14 includes a front cross member 150 near the thigh support 68 and a rear cross member 152 near the lower section 54 of the backrest 20 when the vehicle seat assembly 10 is assembled. The front cross member 150 includes a first end 156a and a second end 156b that engage the lifting assembly 34 to assist in the vertical movement of the seat base 12. In other words, the engagement of the front cross member 150 with the lifting assembly 34 assists in guiding the front section 16 of the seat base 12 in both an upward and a downward direction.The rear cross member 152 of the seat base frame 14 includes a first end 158a and a second end 158b and can be configured to engage with a rotary assembly 162 to adjust the rear section 18 of the seat base 12 independently of the movement of the front section 16 of the seat base 12 in the generally upward or downward direction. Additionally, the seat base frame 14 can include lateral support structures 164. The lateral support structures 164 are positioned on opposite sides of the seat base 12 and extend from the front section 16 to the rear section 18 of the seat base 12. Accordingly, the lateral support structures 164 are positioned near the rail sliding assembly 76. As described in more detail herein, the lateral support structures 164 are configured to engage with the lifting assembly 34 to assist in adjusting the direction of the seat base 12.

[0027] Still with reference to Fig. 6 as well Fig. 7A-8 is the vehicle seat assembly 10 with the support of the lifting assembly 34 between a seated position (see Fig. 11A) and a reclined position (see Fig. 11B). The lifting assembly 34 can be a linear lifting mechanism configured to adjust the front section 16 of the seat base 12. The lifting assembly 34 can be operated between the engaged position, configured to adjust the front section 16 of the seat base 12 upwards towards the reclined position, or the disengaged position, configured to adjust the front section 16 of the seat base 12 downwards towards the seated position. In various examples, the lifting assembly 34 includes a motor 168 located in a motor housing 170. The motor 168 is located directly below the front section 16 of the seat base 12. More specifically, the motor 168 can be located centrally below the front section 16 of the seat base 12 relative to the vehicle floor 80.In other words, the motor 168 is located centrally near the underside of the front section 16 of the seat base 12. A pair of motor shafts 172a, 172b extend from opposite ends of the motor 168 and are located in the motor housing 170. The motor shafts 172a, 172b extend from each end of the motor 168 to engage with opposing lifting mechanisms 174a, 174b, each positioned near the rails 78 of the rail slide assembly 76 and each engaging with an inner section 176 of the lateral support structures 164. Each of the opposing lifting mechanisms 174a, 174b includes the base support 36, which extends from the underside 28 of the seat shell 24 near the front section 16 to the vehicle floor 15. Accordingly, each of the base supports 36 is positioned near, but not parallel or perpendicular to, a section of the rails 78 of the rail slide assembly 76.However, it is considered that the base support 36 may be positioned in various configurations relative to the rail slide assembly 76, including parallel or perpendicular to the rail slide assembly 76.

[0028] The base support 36 can be coupled to a connector 178 via a first coupling connector 182a and a second coupling connector 182b. The connector 178 is positioned on an outer section 180 of the lateral support structures 164. In various examples, the base support 36 of the opposing lifting mechanisms 174a, 174b can include an opening 184 at the first end 38a, configured to receive one end of the first coupling connector 182a, and a curved section 186 at the second end 38b, configured to engage with the second coupling connector 182b. The connector 178 can include a first curved end 187a and a second curved end 187b. When the first coupling connector 182a extends through the opening 184 of the base support 36, the first coupling connector 182a can engage with the first curved end 187a of the connector link 178.Additionally, if the second coupling connector 182b extends along the curved section 186 of the base support 36, the second coupling connector 182b can engage with the second curved end 187b of the connector link 178 to assist in securing and positioning the lifting mechanisms 174a, 174b on the seat base 12.

[0029] Additionally, a coupling bracket 188 can be coupled to the rail sliding assembly and positioned between the base bracket 36 and the connector 178. The coupling bracket 188 can include a passage 190 through which the first coupling connector 182a can extend to engage with the connector 178. The coupling bracket 188 is configured to assist in further securing the opposing lifting mechanisms 174a, 174b, and consequently the lifting assembly 34 to the seat base.

[0030] Still with reference to Fig. 6-8 Each of the opposing lifting mechanisms 174a, 174b also includes a drive shaft 44 extending along a body 192 of the base support 36. The drive shaft 44 can define threads that engage with a guide nut 46. The threads defined by the drive shaft 44 can facilitate the movement of the guide nut 46 along the drive shaft 44 and maintain a position of the guide nut 46 when the rotation of the drive shaft 44 is stopped. Accordingly, the guide nut 46 engages the drive shaft 44 such that a position of the guide nut 46 along the drive shaft 44 is established when the motor 168 is switched on. A first end 194a of the drive shaft 44 can be coupled to the lower end support 42 and a second end 194b of the drive shaft 44 can be coupled to the upper end support 40.Accordingly, the lower end bracket 42 is arranged at the first end 38a of the base bracket 36 and the upper end bracket 40 is arranged at the second end 38b of the base bracket 36.

[0031] The lower end bracket 42 can include a body 196a having a base 196b configured to couple to the first end 38a of the base bracket 36. An upper section of the lower end bracket 42 defines a narrow channel 197 configured to receive the first end 194a of the drive shaft 44. Accordingly, the lower end bracket 42 can be wider near the base 196b compared to the upper section. The narrower profile of the upper section of the lower end bracket 42 allows the lower end bracket 42 to align with the body 192 of the base bracket 36 without extending beyond the body 196a. Consequently, one end of the joint bracket 48 can be positioned above the lower end bracket 43 when the seat base 12 is in the seated position.

[0032] The upper end support 40 can be located at the second end 38b of the base support 36. The upper end support 40 can generally be cylindrical; however, it can be configured to generally have a different shape. A through-hole opening is defined by the upper end support 40 and is configured to receive the second end 194b of the drive shaft 44. Additionally, the upper end support 40 can be located at the second end 38b of the base support 36 or coupled to an anchor support 196. Accordingly, if the upper end support 40 is coupled to the anchor support 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 support 36 but neither abuts nor engages the body 192 of the base support 36.Accordingly, the anchor bracket 196 is coupled to the second end 38b of the base bracket 36. Additionally, the anchor bracket 196 includes a body 198, which has a base 200 coupled to the second end 38b of the body 192 of the base bracket 36. Side walls 202a, 202b, which are perpendicular to each other, extend from the base 200 of the anchor bracket 196. The base 200 and the side walls 202a, 202b of the anchor bracket 196 partially define a space 204 in which the upper end bracket 40 is located. The space 204 provides easy access to the upper end bracket 40 and the drive shaft 44 during manufacturing or assembly.

[0033] Additionally, in various examples, a hinged bracket 48 is arranged over the opposing lifting mechanisms 174a, 174b. The hinged bracket 48 includes passages 205a configured to align with corresponding openings 205b defined by the ends of the motor housing 170. Once aligned, fasteners 206 are inserted within the passages 205a and the openings 205b, respectively, to secure the motor housing 170, and consequently the motor 168 and the motor shafts 172a, 172b, to the opposing lifting mechanisms 174a, 174b. Accordingly, the hinged bracket 48 is configured to slide longitudinally along the body 192 of the base bracket 36 when the motor 168 is switched on. For example, the joint bracket 48 includes an opening 208 configured to accommodate one end of the motor shaft 172a.The end of the motor shaft 172a engages with a drive opening 210, which is defined by the guide nut 46. When the motor 168 is switched on, the motor shaft 172a rotates to adjust the position of the guide nut 46.

[0034] Still with reference to Fig. Figures 6-8 show that the joint bracket 48 comprises, in various examples, a first end 212a located near and engaging with the lead nut 46, and a second end 212b located near the underside 28 of the seat shell 24. The second end 212b of the joint bracket 48 defines passages 213 configured to receive the second coupling connector 182b. Therefore, when the seat base 12 is operated between the seated and reclined positions, the engagement of the joint bracket 48 with the second coupling connector 182b assists in adjusting the distance of the seat base 12.As the guide nut 46 moves along the drive shaft 44 from the lower end bracket 42 to the upper end bracket 40 when the lifting assembly 34 moves towards the engaged position, the joint bracket 48, in other words, engages the second coupling link 182b to move longitudinally towards the seat base 12 in order to adjust the distance of the seat base 12.

[0035] Still with reference to Fig. 6-8 The rear section 18 of the seat base 12 can be adjusted similarly to the front section 16 of the seat base 12. In various examples, the first end 158a of the rear cross member 152 can be operably coupled to a bracket of the rotary assembly 162, and the second end 158b of the rear cross member 152 can be operably coupled to a toothed section 214 of the rotary assembly 162. The rotary assembly 162 can be described as a rack and pinion assembly. The rotary assembly 162 can include the toothed section 214 (rack) of a second bracket, which is coupled to the seat base frame 14, and a toothed gear (pinion) that is coupled to an actuator. The toothed section 214 of the second bracket and the toothed gear can form a toothed interface.Actuation of the actuator can cause the toothed wheel to rotate, allowing the toothed section 214 of the second bracket to move from a rest position to an extended position. Accordingly, the rear section 18 of the seat base 12 can adjust independently of the front section 16 in a generally upward or downward direction, while the swivel assembly 162 adjusts from its rest position to the extended position. However, it is considered that the rear cross member 152 may remain stationary or may not include the swivel assembly 162. Accordingly, the front cross member 150 is positioned at a vehicle-forward location, and the rear cross member 152 is positioned at a vehicle-rear location.

[0036] With reference to Fig. 9. During manufacturing, the seat base 12 is prepared for engagement with the seat base frame 14. In particular, the first and second hook tabs 26a, 26b of the seat shell 24 are configured to engage the front cross member 150, allowing the front section 16 of the seat base 12 to rotate about the front cross member 150 in a generally downward direction towards the vehicle floor 15. As the seat shell 24 continues to rotate about the front cross member 150 via the first and second hook tabs 26a, 26b, the arcuate section 32 of the rear support 30 engages with the rear cross member 152 of the seat base frame 14. Specifically, as the seat base 12 is rotated downward into position, the rear engagement channel 110 of the rear support 30 engages the rear cross member 152.Once engaged, the lifting assembly 34 of the seat base frame 14 can adjust the front section 16 of the seat base 12, and the rotating assembly 162 of the seat base frame 14 can adjust the front section 16 or the rear section 18 of the seat base 12 into, out of, or between the seated position and the reclined position.

[0037] With reference to Fig. 10A and Fig. In 10B, the vehicle seat assembly 10 is capable of moving from the seated position towards the reclined position. The reclined position of the vehicle seat assembly 10 is intended for use when the vehicle 11 is in a stationary (i.e., non-moving) state. For example, while the transmission of the vehicle 11 is in a parked position. Accordingly, moving from, to, and between the seated and reclined 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 away from the lower end bracket 42 towards the upper end bracket 40.Consequently, the displacement of the guide nut 46 along the drive shaft 44 adjusts the position of the joint bracket 48 to assist in adjusting the position of the seat base between the seated and reclined positions. Accordingly, the angle between the lifting assembly 34 and the rail sliding assembly 76 may increase when the vehicle seat assembly 10 moves from the seated to the reclined position. Additionally, the movement of the vehicle seat assembly 10 from the seated to the reclined position may involve rotation of the swivel assembly 162 near the rear cross member 152 toward the rail sliding assembly 76. Therefore, the angle between the swivel assembly 162 and the rail sliding assembly 76 may decrease when the vehicle seat assembly 10 moves from the seated to the reclined position.

[0038] Still with reference to Fig. 10A and Fig. 10B as well Fig. 11A and Fig. During operation, motor 168 is switched on when the vehicle seat assembly 10 is adjusted from the seated position to the reclined position. Switching on motor 168 initiates a rotation of motor shafts 172a, 172b. For example, motor shafts 172a, 172b rotate clockwise to adjust the lifting mechanisms 174a, 174b in the upward direction relative to the vehicle floor 15. As the motor shafts 172a, 172b rotate, the guide nut 46 is configured to thread along the drive shaft 44 from the lower end bracket 42 to the upper end bracket 40. Accordingly, motor 168 and motor shafts 172a, 172b are adjusted in an upward direction perpendicular to and together with the guide nut 46.As the guide nut 46 moves along the drive shaft 44, the joint bracket 48 consequently moves along the body 192 of the base bracket 36 and engages with the second coupling piece 182b to begin adjusting the seat base 12 upwards. As the guide nut 46 reaches the upper end bracket 40, the joint bracket 48 continues to adjust the seat base 12 upwards via the second coupling piece 182b.

[0039] When the vehicle seat assembly 10 is adjusted from the reclined position to the seated position, the motor 168 is switched on. Switching on the motor 168 initiates a rotation of the motor shafts 172a, 172b. Accordingly, the motor shafts 172a, 172b rotate counterclockwise to adjust the lifting mechanisms 174a, 174b in the downward direction relative to the vehicle floor 15. As the motor shafts 172a, 172b rotate, the guide nut 46 is configured to thread along the drive shaft 44 from the upper end bracket 40 to the lower end bracket 42. Thus, the motor 168 and the motor shafts 172a, 172b are adjusted downwards perpendicular to and, together with the guide nut 46, relative to the vehicle floor 15.As the guide nut 46 moves along the drive shaft 44, the joint bracket 48 consequently moves along the body 192 of the base bracket 36 and engages with the second coupling piece 182b to begin adjusting the seat base 12 downwards. As the guide nut 46 reaches the lower end bracket 42, the joint bracket 48 continues to adjust the seat base 12 downwards via the second coupling piece 182b.

[0040] Still with reference to Fig. In the reclined position, an angular relationship between the seat base 12 and the vehicle floor 80 can be set. A first distance between the front section 16 of the seat base 12 and the vehicle floor 15 can increase when the vehicle seat assembly 10 moves from the seated position to the reclined position. Correspondingly, a second distance between the rear section 18 of the seat base 12 and the vehicle floor 15 can decrease when the vehicle seat assembly 10 moves from the seated position to the reclined position. In various examples, each component positioned between the seat base 12 and the vehicle floor 15 can be adjusted with respect to its angular relationship relative to the vehicle floor 15 when the vehicle seat assembly 10 moves into the reclined position.

[0041] When the vehicle seat assembly 10 transitions from the seated position to the reclined position, the first distance between the underside 28 of the front section 16 of the seat base 12 and the vehicle floor 80 can increase. In various examples, the transition of the vehicle seat assembly 10 from the seated position to the reclined position can incrementally increase the first distance between the underside of the front section 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 by which the front section 16 of the seat base 12 can be adjusted. Put another way, 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 front section of the seat base 12 can be incrementally positioned between an angle of approximately 1° and approximately 18° relative to the vehicle floor 80. Accordingly, the seat base 12 is raised in a ratio of 2.5:1 to 3:1 when the first distance between the underside 28 of the seat shell 24 near the front section 16 of the seat base 12 and the vehicle floor 15 is reached. In other words, the seat base 12 can be in a maximally reclined position when it is positioned at the first distance. Consequently, when the seat base 12 is adjusted from and / or between the first distance, the backrest 20 can rotate in the rearward direction to the second distance between the lower section 54 of the backrest 20 and the vehicle floor 80.Accordingly, when the seat assembly 10 is in the seated position, the angle between the seat base 12 and the vehicle floor 15 can generally be zero.

[0042] Additionally, the transition of the vehicle seat assembly 10 from the seated position to the reclined position can involve rotating the backrest 20 in the rearward direction from the seated position such that an angle between approximately 30° and approximately 54° can be achieved between the backrest 20 and the vehicle floor 15. Accordingly, the transition of the vehicle seat assembly 10 from the seated position to the reclined position can involve reducing the second distance between the rear section 18 of the seat base 12 and the vehicle floor 80. When the vehicle seat assembly 10 is in the reclined position via the lifting assembly 34, a neutral positioning capability can be achieved.The neutral position of the vehicle seat assembly 10 can simulate a posture in which the gravitational load on the body is minimized, thereby further reducing stress on the spine and promoting optimal weight distribution. To achieve this, the lifting assembly 34 can be adjusted with additional pivot points and degrees of freedom, allowing adjustment of the angles of the seat base 12 and the backrest 20.

[0043] With reference to Fig.The vehicle seat assembly 10 can include a controller 220, which has a processor 222, such as a microprocessor, a memory 224, and other digital and / or analog control circuits. Instructions or routines 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 input and output, or another selectable feature 230 (e.g., buttons, switches, knobs, etc.). The passenger or user can enter a selection into the user interface regarding the positioning of the vehicle seat assembly 10 between the seated position and the reclined position. The input is communicated to the controller 220, which can then switch on the motor 168.

[0044] The control unit 220 can include routine 226 for managing the transition between the seated and reclined positions of the vehicle seat assembly 10. When the passenger interacts with the selectable features 230, the control unit 220 can activate the lifting assembly 34, which is positioned near the underside 28 of the seat shell 24. The control unit 220 can then coordinate the movement of the opposing linkage mechanisms 174a, 174b by the motor 168, which involves the rotation of the guide nut 46 along the drive shaft 44. Simultaneously, the control unit 220 can adjust the angle of the backrest 20, thereby rotating the backrest 20 in a rearward direction.

[0045] The use of the present device and system can provide numerous advantages. For example, vehicle seat assemblies are typically designed to meet a number of specifications dictated by their use within the passenger compartment of the vehicle 11. These specifications include, among other things, spatial considerations within the passenger compartment, the incorporation of user-desired features, and the consideration of the user experience for a variety of users within the passenger compartment (e.g., legroom).The vehicle seat assembly 10 of the present disclosure is operable in the reclined position of the vehicle seat assembly 10, which can reduce the number and / or intensity of pressure points for a user seated on the vehicle seat assembly 10, while providing a more ergonomically comfortable arrangement than in a conventional reclined position where the backrest 20 can be moved in isolation relative to the seat and the vehicle floor 80. The reclined position of the vehicle seat assembly 10 of the present disclosure can position the backrest 20 in a reclined position relative to the vehicle floor 80 and / or the seat. In addition, the reclined position of the vehicle seat assembly 10 of the present disclosure can position the front section 16 of the seat base 12 in a reclined position relative to the vehicle floor 80 compared to the seated position.

[0046] It is understood that variations and modifications to the aforementioned structure may be made without deviating from the concepts of the present disclosure, and it is further understood that such concepts are to be covered by the following patent claims, unless these patent claims expressly state otherwise by their wording.

[0047] According to the present invention, a vehicle seat assembly is provided comprising: a seat base operably coupled to a vehicle floor and comprising a front section and a rear section; and a lifting assembly operably coupled to the seat base, wherein the lifting assembly is operable vertically between an engaged position and a disengaged position in order to vertically adjust the front section of the seat base when it is in the engaged position, wherein the lifting assembly comprises: a base support extending between the seat base and the vehicle floor, the base support comprising a first end and a second end; a first end support arranged at the first end of the base support, and a second end support arranged at the second end of the base support;an actuator operably coupled to the base support; a drive shaft operably coupled to the actuator, the drive shaft extending between the first end support and the second end support; and an articulated support operably coupled to the drive shaft, the articulated support being configured to move over the actuator along the drive shaft to adjust the front portion of the seat base when the lifting assembly is in the engaged position.

[0048] According to one embodiment, the invention is further characterized by the following: a rail assembly comprising rails supported by the vehicle floor and sliding supports operably coupled to the seat base, wherein the sliding supports engage in sliding engagement with the rails 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 structures extend between the front section and the rear section of the seat base in the vicinity of the rail assembly.

[0049] According to one embodiment, the base support is positioned on an inner section of the lateral support structure and is operably coupled to a connector element that is positioned on an outer section of the lateral support structure.

[0050] According to one embodiment, the first end of the base support defines an opening and the second end defines a curved section, and the connector member includes a first curved end and a second curved end.

[0051] According to one embodiment, a first coupling connector extends through the opening of the base holder to engage with the first curved end of the connector member, and a second coupling connector extends along the curved section of the base holder to engage with the second curved end of the connector member.

[0052] According to one embodiment, the joint mount includes a first end and a second end, wherein the first end is operably coupled to the drive shaft and the second end defines a passage configured to receive the second coupling connector.

[0053] According to one embodiment, a coupling bracket is coupled to the rail assembly, which is positioned between the base bracket and the connector member, wherein the coupling bracket defines a passage configured to receive one end of the first coupling connector to secure the lifting assembly.

[0054] According to one embodiment, the invention is further characterized by the following: an anchor bracket which is coupled to the second end of the base bracket, wherein the first end bracket is coupled to the anchor bracket.

[0055] According to one 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 the lead nut.

[0056] According to one embodiment, the motor and the motor shaft are arranged in a motor housing, and the motor housing is operably coupled to the joint mount of the lifting assembly.

[0057] According to one embodiment, the seat base can be operated in a position between a seated position and a reclined position.

[0058] According to one embodiment, the reclined position involves reducing a second distance between the backrest and the vehicle floor.

[0059] According to one embodiment, the invention is further characterized by the following: a guide nut which engages in threaded engagement with the drive shaft, wherein the guide nut is configured to move along the drive shaft between the first end support and the second end support.

[0060] According to one embodiment, the seat base is operabably coupled to a rotary assembly, and the rotary assembly is configured to adjust the rear section of the seat base.

[0061] According to the present invention, a vehicle seat assembly is provided comprising: a seat base operably coupled to a vehicle floor and comprising a front section and a rear section, wherein the seat base is operable between a seated position and a reclined position; a lifting assembly operably coupled to the seat base frame, wherein the lifting 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, wherein the lifting assembly comprises: a base mount comprising a body; an actuator operably coupled to the base mount;and an articulated bracket operably coupled to the front section of the seat base, the articulated bracket being configured to move via the actuator along a length of the body of the base bracket to adjust the seat base between the seated position and the reclined position.

[0062] According to one embodiment, the invention is further characterized by the following: a first end bracket and a second end bracket arranged on the body of the base bracket; a drive shaft extending between the first end bracket and the second end bracket, the drive shaft comprising a first end and a second end; and a guide nut engaging in threaded engagement with the drive shaft, the guide nut being configured to move along the drive shaft from the first end bracket to the second end bracket in order to vertically adjust the front portion of the seat base.

[0063] According to one embodiment, the first end support defines a channel configured to receive the first end of the drive shaft, and the second end support defines a passage to receive the second end of the drive shaft, such that the drive shaft extends along the body of the base support.

[0064] 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 comprising a front section and a rear section, wherein the seat base is operable between a seated position and a reclined 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 reclined position, the lifting assembly comprising: a motor assembly located near an underside of the seat base at a central location between the front section of the seat base and the vehicle floor, the motor assembly comprising a motor and a motor shaft extending from the motor;a hinged bracket which is operably coupled to the motor assembly and is configured to vertically adjust the front portion of the seat base relative to the vehicle floor, wherein the front portion of the seat base is adjusted away from the vehicle floor when the lifting assembly is engaged.

[0065] According to one embodiment, the invention is further characterized by the following: a base support having a first end and a second end, wherein the base support extends between the front portion of the seat base and the vehicle floor and wherein the drive shaft extends along the base support; a first end support arranged at the first end of the base support; and a second end support arranged at the second end of the base support, wherein the guide nut is configured to move along the drive shaft between the first end support and the second end support as the seat base transitions between the seated position and the reclined position.

[0066] According to one embodiment, the distance of the seat base between the front section and the vehicle floor positions the seat base at an angle relative to the vehicle floor when the seat base is in the reclined position. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 63 / 689 260

[0001]

Claims

[1] Vehicle seat assembly comprising: a seat base that is operably coupled to a vehicle floor and includes a front section and a rear section; and A lifting assembly that is operabably coupled to the seat base, wherein the lifting assembly is operable vertically between an engaged position and a disengaged position in order to vertically adjust the front portion of the seat base when it is in the engaged position, wherein the lifting assembly comprises the following: a base support extending between the seat base and the vehicle floor, wherein the base support includes a first end and a second end; a first end bracket located at the first end of the base bracket, and a second end bracket located at the second end of the base bracket; an actuator that is operationally coupled to the base mount; a drive shaft which is operably coupled to the actuator, wherein the drive shaft extends between the first end bracket and the second end bracket; and a joint mount which is operably coupled to the drive shaft, wherein the joint mount is configured to move via the actuator along the drive shaft to adjust the front portion of the seat base when the lifting assembly is in the engaged position. [2] Vehicle seat assembly according to claim 1, further comprising: a rail assembly comprising rails supported by the vehicle floor and sliding supports operably coupled to the seat base, the sliding supports being in sliding engagement with the rails 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, with the lateral support structures extending between the front section and the rear section of the seat base near the rail assembly. [3] Vehicle seat assembly according to claim 2, wherein the base support is positioned on an inner section of the lateral support structure and is operably coupled to a connector element that is positioned on an outer section of the lateral support structure. [4] Vehicle seat assembly according to claim 3, wherein the first end of the base support defines an opening and the second end defines a curved section and wherein the connector member includes a first curved end and a second curved end. [5] Vehicle seat assembly according to claim 4, wherein a first coupling connector extends through the opening of the base holder to engage with the first curved end of the connector member, and a second coupling connector extends along the curved section of the base holder to engage with the second curved end of the connector member. [6] Vehicle seat assembly according to claim 5, wherein the joint mount 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 a passage configured to receive the second coupling connector. [7] Vehicle seat assembly according to claim 5, wherein a coupling bracket is coupled to the rail assembly which is positioned between the base bracket and the connector member, wherein the coupling bracket defines a passage configured to receive one end of the first coupling connector to secure the lifting assembly. [8] Vehicle seat assembly according to claim 1, further comprising: an anchor bracket coupled to the second end of the base bracket, with the first end bracket coupled to the anchor bracket. [9] Vehicle seat assembly according to one of claims 1-8, wherein the lifting assembly includes a motor and a motor shaft and wherein the motor shaft extends from one end of the motor to engage with the lead nut. [10] Vehicle seat assembly according to claim 9, wherein the motor and the motor shaft are arranged in a motor housing and wherein the motor housing is operably coupled to the joint mount of the lifting assembly. [11] Vehicle seat assembly according to claim 1, wherein the seat base is operable between a seated position and a reclined position. [12] Vehicle seat assembly according to claim 11, wherein the reclined position includes reducing a second distance between the backrest and the vehicle floor. [13] Vehicle seat assembly according to claim 11, further comprising: a guide nut which engages in threaded contact with the drive shaft, wherein the guide nut is configured to move along the drive shaft between the first end support and the second end support. [14] Vehicle seat assembly according to claim 1, wherein the seat base is operably coupled to a rotary assembly and wherein the rotary assembly is configured to adjust the rear section of the seat base.

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