Seat assembly for a vehicle

Abstract

The disclosed application relates to a seat assembly for a vehicle including a trim assembly, a heating unit having a plurality of heating elements, a massage unit having selectively inflatable and deflatable air chambers, a ventilation unit having a fluid flow passage that directs airflow to the trim assembly, and a lumbar unit having at least one inflatable air chamber. The ventilation unit is positioned between the massage unit and the lumbar unit. At least one of the massage unit, the ventilation unit, and the lumbar unit are arranged between the trim assembly and a cushion assembly, thereby optimizing functional compatibility to provide heating, ventilation, lumbar support, and massage effects within the seat according to occupant preferences.

Description

Technical Field

[0001] This disclosure relates to a seat assembly. More specifically, this disclosure relates to a seat assembly that provides active lumbar support, ventilation, and massage functions. Background Technology

[0002] Modern seat assemblies require various components, such as lumbar units, ventilation units, and massage units, to provide seating comfort for vehicle occupants. However, integrating these components into existing seat assemblies presents several challenges, particularly in terms of package design and maintaining optimal functionality. Traditionally, seat assemblies include lumbar units to provide better lumbar support to occupants through the use of large lumbar air cells. However, these large air cells occupy additional space within the seat assembly's foam components, making it difficult to integrate additional features such as ventilation and massage units. Therefore, it is necessary to overcome the aforementioned drawbacks associated with seat assemblies to optimize space utilization while maintaining the required functionality. Utility Model Content

[0003] In a first aspect, this disclosure provides a seat assembly for a vehicle. The seat assembly includes a trim assembly; a heating unit adapted to be associated with the trim assembly, the heating unit including a plurality of heating elements; a massage unit adapted to be associated with the heating unit, the massage unit including a plurality of massage air chambers, wherein the plurality of massage air chambers are adapted to selectively inflate and / or deflate according to the desired massage effect of an occupant of the seat assembly of the vehicle; a ventilation unit adapted to be associated with the massage unit, the ventilation unit including a plurality of fluid flow channels defined through the ventilation unit, the ventilation unit being adapted to direct fluid flow through the plurality of fluid flow channels up to the trim assembly; and a lumbar unit adapted to be associated with the ventilation unit, the lumbar unit including at least one inflatable and deflatable air cell, wherein at least one of the massage unit, the ventilation unit, and the lumbar unit is positioned between the trim assembly and the cushion assembly of the seat assembly.

[0004] In one embodiment, the waist unit is adapted to be disposed on side A of the padding assembly, the ventilation unit is adapted to be disposed between the massage unit and the waist unit, and wherein the massage unit is adapted to be positioned between the ventilation unit and the heating unit.

[0005] In one embodiment, the seat assembly further includes a foam component adapted to be disposed between the lumbar unit and the ventilation unit.

[0006] In one embodiment, the plurality of massage air chambers are adapted to be pneumatically connected to a main electronic control unit, wherein the main electronic control unit is adapted to monitor air pressure and control the filling and releasing of the plurality of massage air chambers.

[0007] In one embodiment, the seat assembly further includes a modular valve pneumatically connected to the lumbar unit, the modular valve being adapted to provide lumbar support by inflating or deflating the at least one inflatable and deflateable air chamber in response to occupant input or predefined conditions.

[0008] In one embodiment, the seat assembly further includes at least one air pump operably connected to the massage unit and the lumbar unit via a plurality of pneumatic tubes, the at least one air pump being adapted to supply compressed air to the massage unit and the lumbar unit.

[0009] In one embodiment, the ventilation unit further includes a pulse width modulation (PWM) fan and an air distribution unit (ADU), the PWM fan being adapted to generate airflow, and wherein the ADU is adapted to distribute airflow through internal channels in the seat assembly.

[0010] In an embodiment, the heating unit, the massage unit, the ventilation unit, and the lumbar unit are adapted to receive one or more control commands from a controller and to operate in a predefined sequence to produce a desired comfort effect for the occupant. Attached Figure Description

[0011] Figure 1 A schematic diagram of various components of a seat assembly according to an exemplary embodiment of the present disclosure is shown;

[0012] Figure 2 A schematic diagram of various internal components of a seat assembly according to another exemplary embodiment of the present disclosure is shown;

[0013] Figure 3 A schematic diagram of various internal components of a seat assembly according to another exemplary embodiment of the present disclosure is shown;

[0014] Figure 4 A schematic diagram of a heating unit, a massage unit, and a ventilation unit of a seat assembly according to an exemplary embodiment of the present disclosure is shown;

[0015] Figure 5 A schematic diagram of a ventilation unit and a lumbar unit associated with a main electronic control unit, modular valves and pumps of a seat assembly is shown according to another exemplary embodiment of the present disclosure;

[0016] Figure 6A schematic perspective view of a ventilation unit and a lumbar unit associated with a main electronic control unit, modular valves and pumps of a seat assembly is shown according to another exemplary embodiment of the present disclosure.

[0017] Figure 7 A schematic diagram of a portion of a seat assembly having a lumbar support unit, a ventilation unit, and a massage unit according to an exemplary embodiment of the present disclosure is shown;

[0018] Figure 8 A schematic cross-sectional view of a seat assembly with an air bellows according to an exemplary embodiment of the present disclosure is shown; and

[0019] Figure 9 A block diagram illustrating the operation of various components of a seat assembly according to an exemplary embodiment of the present disclosure is shown. Detailed Implementation

[0020] Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. Numerous specific details are set forth in the following detailed description in order to provide a thorough understanding of the various embodiments described. However, it will be apparent to those skilled in the art that the various embodiments described can be practiced without these specific details. In other instances, well-known methods, processes, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the embodiments.

[0021] It should be understood that the disclosed embodiments are merely exemplary, and various forms and alternatives are possible. The drawings are not necessarily to scale; some features may be enlarged or minimized to show details of specific components. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but merely as a representative basis for teaching those skilled in the art to implement the embodiments according to this disclosure in various ways.

[0022] "One or more" includes functions performed by one element, functions performed by more than one element (e.g., in a distributed manner), several functions performed by one element, several functions performed by several elements, or any combination of the foregoing.

[0023] It should also be understood that although the terms first, second, etc., are used in this document to describe various elements in certain circumstances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0024] The terminology used in the description of the various embodiments described herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various described embodiments and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and covers any and all possible combinations of one or more of the associated listed items. It should be further understood that, when used in this specification, the terms “includes,” “including,” “comprises,” and / or “comprising” specify the presence of the stated feature, integral, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof.

[0025] This disclosure provides a seat assembly including a trim component, a heating unit, a massage unit, a ventilation unit, a lumbar support unit, a cushioning component or foam component, a fan assembly, and a rubber bellows. In this regard, the aforementioned components work together to provide an ergonomic, space-saving, and versatile seating solution that enhances occupant comfort and support. The active A-side integration of the lumbar support unit eliminates the limitations of deep packing while providing adjustable lumbar support, reducing occupant fatigue and promoting spinal alignment. The layered arrangement of the heating, massage, and ventilation units allows for simultaneous thermal management, airflow optimization, and dynamic massage functions, providing a customizable and adaptive seating experience. The foam component provides seat cushioning and comfort while allowing lumbar adjustment without compromising the structure. Furthermore, the fan assembly and rubber bellows contribute to effective airflow distribution, preventing heat buildup and allowing for effective ventilation.

[0026] refer to Figure 1This diagram illustrates various components of a seat assembly 106 according to exemplary embodiments of the present disclosure. In this regard, seat assembly 106 may be a vehicle seat assembly. In various examples, seat assembly 106 may be shaped and sized as a front driver or passenger seat, a second rear seat, a third rear seat, or other rear seats. Additionally, seat assembly 106 may be configured for use with other non-vehicle applications. In examples, seat assembly 106 may be used in any seating device, such as a land vehicle, a recliner, an aircraft, a boat, etc. As shown, seat assembly 106 includes one or more seat components. As shown, seat assembly 106 includes a seat base 108 on which a user can sit, a seat back 110 on which a user can lean (e.g., when sitting on seat base 108), and / or a headrest 109. As shown, seat assembly 106 includes a trim component 112. Trim component 112 provides a decorative or visible surface for seat assembly 106. Furthermore, trim component 112 is adapted to protect the lower layer and various components of seat assembly 106. In this regard, the various components of seat assembly 106 include a trim cover, heating unit, massage unit, ventilation unit, lumbar unit, foam components, fan assembly, and rubber bellows. In vehicle seat assemblies, the lumbar unit is typically positioned on the B side of the cushioning assembly or seat foam (i.e., the side closer to the seat frame of the seat assembly). In an exemplary embodiment, the lumbar unit is placed on the A side of the seat assembly (the side closer to the occupant). In such an exemplary embodiment, a larger lumbar unit creates an obstruction that interferes with the ventilation unit of the seat assembly. In such an exemplary embodiment, the ventilation unit relies on the optimal arrangement of layers to achieve uniform fluid or airflow and effective heat dissipation. In such an exemplary embodiment, the repositioning of the lumbar unit reduces airflow efficiency, creates pressure points, and reduces overall seat comfort. Therefore, to mitigate the aforementioned problems associated with vehicle seat assemblies, this disclosure provides a seat assembly 106 comprising a massage unit, a ventilation unit, and a lumbar support unit, which are arranged sequentially between the trim assembly 112 and the cushion assembly (not shown) of the seat assembly 106, with the massage unit being closest to side A of the seat assembly 106. This repositioning or rearrangement of the aforementioned units allows all components to work harmoniously, preventing pressure points and maintaining uniform support and temperature regulation. It should be understood that by repositioning the lumbar support to side A and rearranging the massage unit, ventilation unit, and lumbar support unit, the seat assembly effectively balances lumbar support, massage function, and ventilation efficiency without compromising comfort. Furthermore, the seat assembly 106 provides both optimal lumbar adjustment response time and airflow within the seat assembly 106, thereby providing a superior seating experience for the occupant.

[0027] refer to Figure 2This diagram illustrates various internal components of a seat assembly 106 according to another exemplary embodiment of the present disclosure. As shown, the trim assembly 112 includes a trim cover 118. The trim cover 118 forms the outermost surface of the seat assembly 106 and provides aesthetic appeal, protection, and tactile comfort to the occupant. The trim cover 118 may be designed to withstand abrasion while allowing heat and fluid or airflow to pass through, thereby enabling the effectiveness of the underlying components. As shown, such underlying components include a heating unit 122, a massage unit 126, a ventilation unit 130, a lumbar support unit 134, a cushion assembly (i.e., a foam component 136), a fan assembly 142, and a rubber bellows 148. As shown, the heating unit 122 is positioned below the trim cover 118. In this respect, the heating unit 122 includes a plurality of heating elements, which are conductive elements embedded within an insulating substrate to provide seat heating functionality. The heating unit 122 enables the occupant to experience consistent warmth, especially in colder environments, thereby contributing to overall thermal comfort. In an embodiment, the heating unit 122 may be adapted to receive one or more control commands from a controller and to operate in a predefined sequence to produce a desired comfort effect for the occupant. As shown, the massage unit 126 is positioned below the heating unit 122. The massage unit 126 includes a plurality of massage air chambers or mechanical actuators to provide a dynamic massage function. In this regard, the plurality of massage air chambers are adapted to expand and contract in a controlled manner to provide pulsating pressure to the occupant's back, thereby reducing muscle fatigue and improving circulation. The positioning of the massage unit 126 below the heating unit 122 enhances muscle relaxation for the occupant, thus allowing for a more effective massage function. The plurality of massage air chambers are adapted to selectively inflate and / or deflate according to the desired massage effect of the occupant of the vehicle's seat assembly. In an embodiment, the massage unit 126 may be adapted to receive one or more control commands from a controller and to operate in a predefined sequence to produce a desired comfort effect for the occupant. Furthermore, a ventilation unit 130 is positioned or attached below the massage unit 126 to facilitate airflow regulation. Ventilation unit 130 includes a plurality of fluid flow channels defined therethrough. Furthermore, ventilation unit 130 is adapted to guide fluid flow through the plurality of fluid flow channels up to the decorative shroud 118 or decorative assembly 112. In an exemplary embodiment, ventilation unit 130 includes an air distribution layer that guides airflow from fan assembly 142, thereby allowing heated or cooled air to reach the back of the occupant through decorative shroud 118. Ventilation unit 130 is adapted to prevent heat buildup when heating unit 122 is operating and to provide cooling when needed, thereby providing adaptive thermal regulation. Additionally, lumbar unit 134 is positioned or attached below ventilation unit 130. In this respect, lumbar unit 134 includes at least one inflatable and ventable air chamber that provides adjustable support to the lower back of the occupant.As shown, at least one of the massage unit 126, ventilation unit 130, and lumbar unit 134 is positioned between the trim assembly 118 and the cushion assembly 136 of the seat assembly 106. It should be understood that the A-side integration of the lumbar unit 134 allows for lumbar support adjustment without compromising space efficiency. Furthermore, at least one inflatable and deflated air chamber can expand or contract based on occupant preference, thereby enhancing spinal alignment and reducing fatigue during extended seating periods. Additionally, the lumbar unit 134 is positioned behind the ventilation unit 130 to allow unobstructed airflow while maintaining proximity to the occupant's lumbar region. In one embodiment, the lumbar unit 134 is adapted to be arranged on the A-side of the cushion assembly 136, and the ventilation unit 130 is adapted to be positioned between the massage unit 126 and the lumbar unit 134. In such an embodiment, the massage unit 126 is adapted to be positioned between the ventilation unit 130 and the heating unit 122. As shown, the seat assembly 106 also includes a fan assembly 142 positioned within the seat assembly 106. The fan assembly 142 is adapted to generate the airflow required for ventilation. Furthermore, a rubber bellows 148 connects between the fan assembly 142 and the ventilation unit 130 to form a flexible air duct. The rubber bellows 148 prevents airflow leakage, reduces vibration, and allows for efficient air distribution without requiring a rigid duct structure. The arrangement of the aforementioned components in a specified order improves ergonomic support, enhances the passenger experience, and optimizes seat packaging limitations, making the seat assembly 106 suitable for automotive, aircraft, and premium seating applications.

[0028] refer to Figure 3 This illustration shows a schematic diagram of various interior components of a seat assembly 106 according to another exemplary embodiment of the present disclosure. As shown, the trim assembly 112 (as described above) Figure 1The seat assembly 106 (as described herein) includes a decorative cover 118. The decorative cover 118 forms the outermost surface of the seat assembly 106 and provides occupant aesthetic appeal, protection, and tactile comfort. The decorative cover 118 can be designed to withstand wear while allowing heat and airflow to pass through, thereby enabling the effectiveness of the underlying components. As shown, such underlying components include a heating unit 122, a massage unit 126, a ventilation unit 130, a foam component 132, a lumbar support unit 134, a cushion assembly (i.e., the foam component) 136, and a fan assembly 142. It should be understood that the aforementioned components are arranged in a structured manner to achieve a compact yet efficient seat assembly 106. As shown, the heating unit 122 is positioned below the decorative cover 118. In this respect, the heating unit 122 includes multiple heating elements, which are conductive elements embedded within an insulating substrate to provide seat heating functionality. The heating unit 122 allows occupant to experience consistent warmth, especially in colder environments, thus contributing to overall thermal comfort. In an embodiment, the heating unit 122 may be adapted to receive one or more control commands from a controller and to operate in a predefined sequence to produce a desired comfort effect for the occupant. As shown, the massage unit 126 is positioned below the heating unit 122. The massage unit 126 includes a plurality of massage air chambers or mechanical actuators to provide selective inflation and / or deflation to the massage unit 126. In this regard, the plurality of massage air chambers are adapted to expand and contract in a controlled manner to provide pulsating pressure to the occupant's back, thereby reducing muscle fatigue and improving circulation. The plurality of massage air chambers are adapted to selectively inflate and / or deflate according to the desired massage effect of the occupant of the vehicle's seat assembly. In an embodiment, the massage unit 126 may be adapted to receive one or more control commands from a controller and to operate in a predefined sequence to produce a desired comfort effect for the occupant. Furthermore, a ventilation unit 130 is positioned or attached below the massage unit 126 to facilitate airflow regulation. The ventilation unit 130 includes a plurality of fluid flow channels defined by the ventilation unit 130. Furthermore, the ventilation unit 130 is adapted to guide fluid flow through multiple fluid flow channels up to the decorative shroud 118 or decorative assembly 112. In an exemplary embodiment, the ventilation unit 130 includes an air distribution layer that guides airflow from the fan assembly 142, thereby allowing heated or cooled air to reach the occupant's back through the decorative shroud 118. The ventilation unit 130 is adapted to prevent heat buildup when the heating unit 122 is operating and to provide cooling when needed, thereby providing adaptive thermal regulation. As shown, a foam component 132 is adapted to be disposed between the lumbar unit 134 and the ventilation unit 130. This arrangement provides additional comfort for the occupant. Additionally, the lumbar unit 134 is positioned or attached below the ventilation unit 130. In this respect, the lumbar unit 134 includes at least one inflatable and deflated air chamber that provides adjustable support to the occupant's lower back.As shown in the figure, at least one of the massage unit 126, ventilation unit 130, and lumbar unit 134 is positioned between the trim assembly 118 and the cushion assembly 136 of the seat assembly 106. It should be understood that the A-side integration of the lumbar unit 134 allows for lumbar support adjustment without compromising space efficiency. Furthermore, at least one inflatable and deflated air chamber can expand or contract based on occupant preference, thereby enhancing spinal alignment of the seat assembly with the occupant's spine and reducing fatigue during extended periods of occupant seating. Additionally, the placement of the lumbar unit 134 behind the ventilation unit 130 allows for unobstructed airflow while remaining close to the occupant's lumbar region.

[0029] In one embodiment, the lumbar unit 134 is adapted to be disposed on side A of the cushion assembly 136, and the ventilation unit 130 is adapted to be disposed between the massage unit 126 and the lumbar unit 134. In such an embodiment, the massage unit 126 is adapted to be positioned between the ventilation unit 130 and the heating unit 122. As shown, the foam component 136 is positioned behind the lumbar unit 134. In this respect, the foam component 136 serves as the main cushioning layer of the seat assembly 106. In one embodiment, the foam component 136 is adapted to provide comfort, shock absorption, and structural integrity, thereby allowing the lumbar airbag and other active components to remain seamlessly integrated without causing occupant discomfort. In one embodiment, the foam component 136 may be designed to be partially deformable, thereby allowing the airbag to inflate while maintaining uniform seat ergonomics. As shown, the seat assembly 106 also includes a fan assembly 142 positioned within the seat assembly 106. The fan assembly 142 is adapted to generate the airflow required for ventilation. The arrangement of the aforementioned components in a specified order improves ergonomic support, enhances the passenger experience, and optimizes seat packaging limitations, making seat assembly 106 suitable for automotive, aircraft, and premium seating applications.

[0030] Reference Figure 4 A schematic diagram of a heating unit 122, a massage unit 126, and a ventilation unit 130 of a seat assembly 106 according to an exemplary embodiment of the present disclosure is shown. As shown, the massage unit 126 includes a plurality of massage air chambers 129 arranged sequentially and at regular distances from each other. As shown, the plurality of massage air chambers 129 includes ten massage air chambers 129 arranged in two parallel rows, such that each row has five massage air chambers 129. Furthermore, the plurality of massage air chambers 129 are fluidly connected to each other to allow fluid flow. Additionally, the plurality of massage air chambers 129 are adapted to be pneumatically connected to a main electronic control unit. In an embodiment, the main electronic control unit is adapted to monitor air pressure and control the filling and deflating of the plurality of massage air chambers 129. As shown, the massage unit 126 is also associated with a heating pad 122 and a ventilation unit 130 to provide a balanced massage, heating, and ventilation function to the seat assembly 106.

[0031] refer to Figure 5 The diagram illustrates a ventilation unit 130 and a lumbar unit 134 associated with a main electronic control unit 150, a modular valve 151, and a pump 154, according to another exemplary embodiment of the present disclosure. The main electronic control unit 150 is adapted to monitor air pressure and control multiple massage air chambers 129 (such as...). Figure 4 The seat assembly 106, as shown, also includes a modular valve 151 pneumatically connected to the lumbar unit 134. The modular valve 151 is adapted to provide lumbar support by inflating or deflating at least one inflatable and deflatable air chamber. In this regard, selective inflation or deflation of the air chamber can be performed in response to occupant input or predefined conditions. In an embodiment, the main electronic control unit 150 is adapted to monitor pressure levels and receive an SBR signal. In such an embodiment, the main electronic control unit 150 is adapted to monitor the pressure level in the massage air chamber of the seat assembly and receive an SBR signal from a seatbelt reminder (SBR) system. The main electronic control unit 150 is adapted to continuously check the pressure to allow the massage air chamber to be inflated for optimal occupant comfort. In an exemplary embodiment, when the SBR signal indicates that the seatbelt is fastened, the main electronic control unit 150 is adapted to allow the massage function to operate. Furthermore, the main electronic control unit 150 is then adapted to control the inflation and deflation of the massage air chamber based on pressure readings and the SBR signal, thereby providing a customized massage experience that enhances occupant comfort and relaxation. In one embodiment, the modular valve 151 is adapted to provide rapid-response inflation and deflation of the active lumbar air chamber, thereby allowing real-time lumbar support adjustment. As shown, the seat assembly 106 also includes at least one air pump 154 ​​operatively connected via a plurality of pneumatic tubes 135 to the massage unit 126 and the lumbar unit 134, the air pump 154 ​​being adapted to supply compressed air to the massage unit 126 and the lumbar unit 134. Additionally, one or more pumps 154 facilitate rapid inflation of both the massage air chamber 129 and the lumbar air chamber, wherein the number of air pumps 154 varies based on the desired response speed. In one embodiment, the ventilation unit 130 also includes a pulse width modulation (PWM) fan and an air distribution unit (ADU), the PWM fan being adapted to generate airflow, and wherein the ADU is adapted to distribute airflow through internal channels in the seat assembly. In one embodiment, the ventilation unit 130 comprises a PWM fan 142 and an air distribution unit (ADU) to regulate airflow within the seat assembly 106. The PWM fan 142 uses pulse width modulation to adjust the fan speed based on the occupant's needs, allowing for variable speed control and optimizing air circulation for enhanced comfort. The air distribution unit (ADU) evenly distributes the air circulated by the PWM fan, preventing localized heat buildup and promoting breathability and consistent ventilation across the entire seat surface of the seat assembly.

[0032] refer to Figure 6 This diagram illustrates a perspective view of a ventilation unit 130 and a lumbar unit 134 associated with a main electronic control unit 150, modular valves, and pumps 154 of a seat assembly 106, according to another exemplary embodiment of this disclosure. As shown, the lumbar unit 134 is pneumatically controlled and includes a main electronic control unit 150 (SMV valve) configured to monitor air pressure, process SBR signals, and regulate the inflation or deflation of the massage air chambers. Additionally, a modular valve 151 is provided to facilitate rapid-response inflation and deflation of the lumbar unit 134, thereby providing real-time lumbar adjustment based on occupant posture. Furthermore, one or more pumps 154 are combined to support rapid inflation of both the lumbar and massage air chambers based on desired response speed criteria. As shown, a series of tubes and connectors 135 pass through the seat assembly 106 to enable efficient air distribution to the lumbar and massage air chambers. Furthermore, a ventilation unit 130 is shown, which includes a pulse-width modulation (PWM) fan 142 and an air distribution unit (ADU) 144. The PWM fan 142 is configured to regulate airflow within the seat assembly 106, while the ADU 144 distributes air evenly through internal ventilation channels, thereby reducing localized heat buildup and maintaining occupant thermal comfort.

[0033] refer to Figure 7This diagram illustrates a portion of a seat assembly 106 having a lumbar unit 134, a ventilation unit 130, and a massage unit 126 according to exemplary embodiments of the present disclosure. As shown, the lumbar unit 134 is laterally positioned along the side of the seat back 110 and is designed to provide adjustable support to the lower back of the occupant. The lumbar unit 134 includes at least one inflatable and deflated air chamber that can expand or contract to change the curvature of the lumbar region, thereby ensuring ergonomic support. The ventilation unit 130 is arranged between the lumbar unit 134 and the massage unit 126, integrating a network of fluid flow channels that guide airflow through the seat structure. The ventilation unit 130 provides effective heat dissipation and air circulation, thereby enhancing occupant comfort. The ventilation unit 130 is positioned in such a way that it maintains airflow efficiency, i.e., the ventilation unit 130 maintains airflow efficiency despite the presence of the lumbar unit 134 occupying space within the seat assembly 106. The massage unit 126 consists of a plurality of air chambers arranged in a structured layout along the seat back 110. Multiple air chambers can be selectively filled and released to produce a massage effect, thereby relieving muscle tension and improving blood circulation. Massage unit 126 is positioned between ventilation unit 130 and heating unit 122, enabling functional compatibility between different seat comfort features. At least one of the components, such as massage unit 126, ventilation unit 130, or lumbar support unit 134, is positioned between the trim assembly 112 and the padding assembly of seat assembly 106. Trim assembly 112 forms the outermost layer to provide an aesthetic finish, while the padding assembly consists of a lower layer of foam or padding that contributes to seating comfort. The integration of these units within seat assembly 106 provides optimal space utilization while maintaining the multi-functional capabilities of heating, ventilation, massage, and lumbar support within a limited space.

[0034] refer to Figure 8 This figure shows a schematic cross-sectional view of a seat assembly 106 having an air bellows 148 according to an exemplary embodiment of the present disclosure. As shown, the air bellows 148 is centrally positioned within the seat assembly 106 for regulating airflow distribution. In embodiments, the air bellows 148 is adapted to facilitate controlled inflation and deflation, aiding in ventilation and lumbar support functions. As shown, the air bellows is positioned within the fan assembly 142 (as described above). Figure 2 Between the seat assembly 106 and the ventilation unit 130 (as described above), an air bellows 148 passes through the ventilation unit 130 and the lumbar unit 134, thereby allowing effective air circulation within the seat assembly 106. As shown, the seat frame is partially visible and provides structural support for the integration of various comfort enhancement components such as the ventilation unit 130 and the lumbar unit 134. This design effectively distributes airflow to the occupant's back, thus supporting both passive and active ventilation modes within the seat assembly 106.

[0035] refer to Figure 9 A block diagram illustrating the operation of various components of a seat assembly 206 according to exemplary embodiments of the present disclosure is shown. As shown, the seat assembly 206 for a vehicle incorporates an integrated system for providing lumbar support, massage, and ventilation functions to the occupant of the seat assembly 206. The seat assembly 206 includes a control unit 210, an air supply source 214, a secondary valve system 218, a lumbar unit 222, and a plurality of massage air chambers 226. The interconnection of these components promotes optimal seating comfort through dynamic airflow management. The control unit 210 serves as a main module for regulating the airflow distribution to the different functional components. The control unit 210 is configured to control the air delivery to the lumbar unit 222 and the massage air chambers 226. The control unit 210 is connected to the air supply source 214, which provides the airflow required to inflate and deflate the massage air chambers 226 and the lumbar unit 222. The secondary valve system 218 is provided to effectively manage the airflow distribution. The secondary valve system 218 includes a pump, a first component, and a second component. A first component connects to the lumbar support unit 222, while a second component connects to the control unit 210. A pump connects to both the control unit 210 and the air supply source 214, providing regulated airflow management. Additionally, a secondary valve system 218 includes two charge coils and two discharge coils that work together to precisely control the charge and discharge of the massage air chambers 226 for lumbar support and massage functions. An additional supply unit 232 is positioned between the secondary valve system 218 and the control unit 210. The additional supply unit 232 is adapted to provide various functions, including power distribution and airflow regulation. The active lumbar support unit 222 is a single large lumbar support structure 222 integrated into the seat assembly 206. Eight massage air chambers 226 are positioned adjacent to the lumbar support unit 222. Each of the massage air chambers 226 is adapted to connect to an outlet of the control unit 210, thereby achieving controlled airflow for performing back massage functions. Through coordinated charge and discharge, the massage air chambers 226 produce a massage effect, thereby enhancing occupant comfort. The dashed line 236 represents the airflow channel that interconnects the various components, ensuring seamless airflow from the air supply source 214 to the lumbar unit 222 and the massage unit 226. The integration of the active lumbar unit 222 with the massage air chamber 226 enables a combination of lumbar support adjustment and massage effects to be achieved in real time based on the occupant's needs.

[0036] In a first aspect, this disclosure provides a seat assembly for a vehicle. The seat assembly includes: a trim assembly; a heating unit adapted to be associated with the trim assembly, the heating unit including a plurality of heating elements; a massage unit adapted to be associated with the heating unit, the massage unit including a plurality of massage air chambers, wherein the plurality of massage air chambers are adapted to selectively inflate and / or deflate according to the desired massage effect of an occupant of the seat assembly of the vehicle; a ventilation unit adapted to be associated with the massage unit, the ventilation unit including a plurality of fluid flow channels defined through the ventilation unit, the ventilation unit being adapted to direct fluid flow through the plurality of fluid flow channels up to the trim assembly; and a lumbar unit adapted to be associated with the ventilation unit, the lumbar unit including at least one inflatable and deflateable air chamber, wherein at least one of the massage unit, the ventilation unit, and the lumbar unit is positioned between the trim assembly and a cushion assembly of the seat assembly.

[0037] In one embodiment, the waist unit is adapted to be disposed on side A of the padding assembly, the ventilation unit is adapted to be disposed between the massage unit and the waist unit, and wherein the massage unit is adapted to be positioned between the ventilation unit and the heating unit.

[0038] In one embodiment, the seat assembly further includes a foam component adapted to be disposed between the lumbar unit and the ventilation unit.

[0039] In one embodiment, the plurality of massage air chambers are adapted to be pneumatically connected to a main electronic control unit, wherein the main electronic control unit is adapted to monitor air pressure and control the filling and releasing of the plurality of massage air chambers.

[0040] In one embodiment, the seat assembly further includes a modular valve pneumatically connected to the lumbar unit, the modular valve being adapted to provide lumbar support by inflating or deflating the at least one inflatable and deflateable air chamber in response to occupant input or predefined conditions.

[0041] In one embodiment, the seat assembly further includes at least one air pump operably connected to the massage unit and the lumbar unit via a plurality of pneumatic tubes, the at least one air pump being adapted to supply compressed air to the massage unit and the lumbar unit.

[0042] In one embodiment, the ventilation unit further includes a pulse width modulation (PWM) fan and an air distribution unit (ADU), the PWM fan being adapted to generate airflow, and wherein the ADU is adapted to distribute airflow through internal channels in the seat assembly.

[0043] In an embodiment, the heating unit, the massage unit, the ventilation unit, and the lumbar unit are adapted to receive one or more control commands from a controller and to operate in a predefined sequence to produce a desired comfort effect for the occupant.

[0044] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 These are merely examples and should not unduly limit the scope of the claims herein. Those skilled in the art will recognize many variations, alternatives, and modifications to the embodiments of this disclosure.

[0045] While exemplary embodiments have been described above, this does not mean that these embodiments describe all possible forms according to this disclosure. In this regard, the language used in the specification is descriptive rather than limiting, and it should be understood that various changes can be made without departing from the spirit and scope of this disclosure. Furthermore, features of various embodiments can be combined to form other embodiments according to this disclosure.

Claims

1. A seat assembly for a vehicle, characterized in that, The seat assembly includes: Decorative components; A heating unit adapted to be associated with the decorative assembly, the heating unit comprising a plurality of heating elements; A massage unit adapted to be associated with the heating unit, the massage unit including a plurality of massage air chambers, wherein the plurality of massage air chambers are adapted to be selectively filled and / or released according to the desired massage effect of the occupants of the seat assembly of the vehicle; A ventilation unit, adapted to be associated with the massage unit, the ventilation unit including a plurality of fluid flow channels defined through the ventilation unit, the ventilation unit being adapted to guide fluid flow through the plurality of fluid flow channels up to the decorative assembly; and A lumbar unit adapted to be associated with the ventilation unit, the lumbar unit including at least one inflatable and ventable air chamber, wherein at least one of the massage unit, the ventilation unit and the lumbar unit is positioned between the trim assembly and the cushion assembly of the seat assembly.

2. The seat assembly according to claim 1, characterized in that, The waist unit is adapted to be disposed on side A of the padding assembly, the ventilation unit is adapted to be disposed between the massage unit and the waist unit, and wherein the massage unit is adapted to be positioned between the ventilation unit and the heating unit.

3. The seat assembly according to claim 1 or 2, characterized in that, The seat assembly also includes a foam component adapted to be disposed between the lumbar unit and the ventilation unit.

4. The seat assembly according to claim 1, characterized in that, The plurality of massage air chambers are adapted to be pneumatically connected to a main electronic control unit, wherein the main electronic control unit is adapted to monitor air pressure and control the filling and releasing of the plurality of massage air chambers.

5. The seat assembly according to claim 1, characterized in that, The seat assembly also includes a modular valve pneumatically connected to the lumbar unit, the modular valve being adapted to provide lumbar support by inflating or deflating the at least one inflatable and deflateable air chamber in response to occupant input or predefined conditions.

6. The seat assembly according to claim 1, characterized in that, The seat assembly also includes at least one air pump operably connected to the massage unit and the lumbar unit via a plurality of pneumatic tubes, the at least one air pump being adapted to supply compressed air to the massage unit and the lumbar unit.

7. The seat assembly according to claim 1, characterized in that, The ventilation unit further includes a pulse width modulation fan and an air distribution unit, the pulse width modulation fan being adapted to generate airflow, and wherein the air distribution unit is adapted to distribute airflow through internal channels in the seat assembly.

8. The seat assembly according to claim 1, characterized in that, The heating unit, the massage unit, the ventilation unit, and the lumbar unit are adapted to receive one or more control commands from a controller and to operate in a predefined sequence to produce the desired comfort effect for the occupant.

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