An adjustable seat

Abstract

The application discloses an adjustable seat, which comprises a bearing seat frame, a multi-section adjusting frame and a driving assembly. The bearing seat frame is internally provided with a mounting cavity, the multi-section adjusting frame comprises a fixed bearing part and a plurality of independent adjusting parts, the fixed bearing part is fixedly connected with the bearing seat frame, and the independent adjusting parts are hingedly connected with the bearing seat frame or adjacent independent adjusting parts; the driving assembly comprises a plurality of independent driving members, at least one of which is arranged in the mounting cavity and used for driving the independent adjusting parts respectively. The driving assembly is partially arranged in the mounting cavity through the mounting cavity, so that the external space of the seat is effectively reduced, and the light and thin design is achieved; the multi-section hinged frame is matched with a hinged connecting piece, the support continuity is ensured, and the rotating space is reserved; the plurality of independent driving members correspond to the adjusting parts, the power is accurately transmitted through the matched support arms, and the large-angle independent adjustment is realized. The application solves the technical problem that the existing seat is difficult to simultaneously consider the light and thin design and the large-angle independent adjustment of multiple parts, and improves the practicability, space adaptability and use experience of the seat.

Description

Technical Field

[0001] This invention relates to the field of electric seat technology, and more specifically to an adjustable seat. Background Technology

[0002] In related technologies, a lightweight and thin structure and independent adjustment of multiple parts and angles significantly affect the user experience of adjustable chairs—especially those used as yoga chairs—and are two important design considerations. The inventors of this case have discovered that adjustable chairs in related technologies suffer from a structural design difficulty in simultaneously achieving a lightweight and thin structure and independent adjustment of multiple parts and angles, specifically manifested as follows: Pursuing a thinner and lighter seat often requires compressing internal installation space, especially limiting or reducing the number of drive components and the number of independently adjustable parts and their adjustment angles. This results in an inability to achieve independent multi-angle adjustment of multiple parts of the body, making it difficult to adapt to different usage scenarios. Conversely, pursuing independent adjustment of multiple parts and angles requires multiple drive components and ample space, inevitably leading to a larger and thicker seat, making it difficult to achieve a thin and light design and adapting to space-constrained environments such as small apartments and yoga studios. Therefore, it is necessary to provide an adjustable seat that can ensure a thin and light structure while meeting the needs for independent adjustment of multiple parts and angles. Such an adjustable seat is particularly suitable for use as a yoga chair. Summary of the Invention

[0003] Embodiments of the present invention provide an adjustable seat that ensures a lightweight structure while meeting the needs for independent adjustment of multiple parts and angles. This adjustable seat is particularly suitable for use as a yoga chair.

[0004] According to one aspect of this application, embodiments of the present invention provide an adjustable seat, the adjustable seat comprising: A support frame, the support frame having an internal mounting cavity; the bottom of the support frame is used to connect to the support base of the adjustable seat; A multi-segment adjustable frame includes a fixed support part and a main adjustment mechanism. The fixed support part is connected to the support frame to form a structure that supports the human buttocks of the adjustable seat. The main adjustment mechanism includes multiple adjustment parts, and the adjustment parts in the main adjustment mechanism are hinged to the support frame or adjacent adjustment parts. A drive assembly includes multiple independent drive components, wherein the mounting cavity accommodates at least a portion of one of the drive components, and the drive components and the adjustment parts are arranged in a one-to-one correspondence for driving the adjustment parts to rotate, thereby realizing the posture adjustment of the adjustable seat.

[0005] In some embodiments, the multi-segment adjustment frame further includes a hinged connector, wherein the fixed bearing portion and the adjacent adjustment portion are provided with the hinged connector for hinged connection between the two, and the adjustment portions adjacent to each other in the overall adjustment mechanism are provided with the hinged connector for hinged connection between the two.

[0006] In some embodiments, the adjustable seat includes a plurality of the hinged connectors; the length of the hinged connectors and the gap between the fixed support portion and the adjacent adjustment portion are adapted between the fixed support portion and the adjustment portion; the length of the hinged connectors and the gap between the adjustment portions are adapted between adjacent adjustment portions in the overall adjustment mechanism.

[0007] In some embodiments, the multiple adjustment parts of the main adjustment mechanism are a backrest adjustment part, a thigh adjustment part, and a calf adjustment part, and the fixed support part is a support frame corresponding to the human buttocks, and the fixed support part is integrally formed or fixedly connected to the support frame; the fixed support part is located on the support frame; The frame length of the backrest adjustment part is greater than the frame length of the calf adjustment part, the frame length of the calf adjustment part is greater than the frame length of the thigh adjustment part, and the frame length of the fixed support part is between the calf adjustment part and the thigh adjustment part.

[0008] In some embodiments, the plurality of driving members of the driving assembly are respectively a first driving member, a second driving member, and a third driving member that are independent of each other. The first driving member drives the backrest adjustment part, the second driving member drives the thigh adjustment part, and the third driving member drives the calf adjustment part. The non-output end of the first driving member is hinged to the backrest adjustment part and the output end is hinged to the support frame. The non-output end of the second driving member is hinged to the thigh adjustment part and the output end is hinged to the support frame. The non-output end of the third driving member is hinged to the thigh adjustment part and the output end is hinged to the calf adjustment part. The mounting cavity accommodates at least a portion of both the first and second driving members, and the third driving member is disposed outside the mounting cavity.

[0009] In some embodiments, the first drive member is configured to drive the backrest adjustment portion to achieve a rotation angle adjustment of -20° to 75° relative to the support frame, the second drive member is configured to drive the thigh adjustment portion to achieve a rotation angle adjustment of 0° to 35° relative to the support frame, and the third drive member is configured to drive the calf adjustment portion to achieve a rotation angle adjustment of -20° to 0° relative to the thigh adjustment portion.

[0010] In some embodiments, each of the driving members and the corresponding adjustment part are provided with a support arm in a one-to-one correspondence; in the adjustable seat, one end of the support arm is hinged to one end of a driving member, and the other end is fixedly connected or integrally connected to the adjustment part driven by the driving member; the support arm is a bent or arc-shaped structure. The first drive member is hinged to the backrest adjustment part via a support arm, the second drive member is hinged to the thigh adjustment part via a support arm, and the third drive member is hinged to the calf adjustment part via a support arm.

[0011] In some embodiments, the backrest adjustment part, thigh adjustment part, and calf adjustment part have a hollow frame structure; the outer peripheral edge of the hollow frame structure is fixedly connected to or integrally formed with the corresponding hinge connector.

[0012] In some embodiments, the thickness of the backrest adjustment part, thigh adjustment part, and calf adjustment part is 10cm.

[0013] In some embodiments, the support base is an arc-shaped base or a disc-shaped fixed base.

[0014] Compared with the prior art, the adjustable seat of the present invention has at least the following beneficial effects: The adjustable seat provided by this invention effectively solves the technical problems of related technologies, such as the inability of adjustable seats to simultaneously achieve a slim and lightweight structure and independent adjustment of multiple parts, as well as the complex structure and high production and usage costs. The adjustable seat adopts a collaborative design of a support frame, a multi-segment adjustment frame, and a drive component. The support frame has an internal mounting cavity, allowing at least one drive component to be built-in without occupying additional external space, effectively achieving a slim and lightweight seat and adapting to space-constrained scenarios. The multi-segment adjustment frame, through a hinged design that fixes the support part and the independent adjustment parts, works in conjunction with multiple independent drive components of the drive component to achieve independent adjustment of multiple parts, balancing slimness and adjustment flexibility.

[0015] The above description is merely an overview of the technical solution of the present invention. To better understand the technical means of the present invention and to enable its implementation according to the description, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Features described in the context of different aspects and embodiments of the present invention can be used together and / or interchanged. Similarly, features described in the context of a single embodiment can also be provided individually or in any suitable sub-combination. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an adjustable seat provided in an embodiment of the present invention; Figure 2 An exploded view of an adjustable seat provided in an embodiment of the present invention; Figure 3 A front view of an adjustable seat provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an adjustable seat provided in an embodiment of the present invention, when the hollow frame structure is formed only by the arrangement of longitudinal ribs of a curved structure; Figure 5 This invention provides a schematic diagram of the structure of an adjustable seat when the hollow frame structure is formed by the interlacing of transverse and longitudinal ribs. Figure 6 This is a schematic diagram of the structure of an adjustable seat provided in an embodiment of the present invention, showing that at a certain moment the backrest adjustment part is tilted forward and the thigh adjustment part is raised upward; Figure 7 This is a schematic diagram of the structure of an adjustable seat provided in an embodiment of the present invention, showing the backrest adjustment part tilting backward at a certain moment; Figure 8 This is a side view of an adjustable seat provided in an embodiment of the present invention, showing the lower leg adjustment part rotating downwards at a certain moment. Figure 9 This is a schematic diagram of the structure of an adjustable seat with an arc-shaped support arm, provided by an embodiment of the present invention. Figure 10 This is a schematic diagram of the structure of an adjustable seat with a support base added to the bottom, provided by an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of an adjustable seat provided in an embodiment of the present invention, when the support base is an arc-shaped base; Figure 12 This is a side view of an adjustable seat provided in an embodiment of the present invention when the support base is an arc-shaped base; Figure 13 This is a schematic diagram of the structure of an adjustable seat provided in an embodiment of the present invention, when the support base is a disc-shaped fixed base; Figure 14This is a schematic diagram of the structure of an adjustable seat provided in an embodiment of the present invention, in which the drive assembly and the support base are hidden when the support base is a disc-shaped fixed base; Figure 15 An exploded view of the seat portion structure in an adjustable seat provided in an embodiment of the present invention; Figure label explanation: 1. Support frame; 11. Mounting cavity; 12. Support arm; 2. Multi-section adjustable frame; 21. Fixed support part; 22. Main adjustment mechanism; 23. Hinge connector; 221. Backrest adjustment part; 222. Thigh adjustment part; 223. Lower leg adjustment part; 3. Drive assembly; 31. First drive component; 32. Second drive component; 33. Third drive component; 4. Support base. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0019] In the description of this invention, it should be clarified that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention. For ease of description, in this document, the area in front of a person sitting in a normal seated posture is defined as "front," the area behind as "rear," the left hand direction as "left," and the right hand direction as "right."

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] This invention provides an adjustable seat, such as Figures 1-15 As shown, the adjustable seat includes a support frame 1, a multi-segment adjustable frame 2, and a drive assembly 3. The support frame 1 serves as the core mounting carrier for the entire adjustable seat, with its bottom connecting to the seat's support base. The multi-segment adjustable frame 2, as the core structure for human body support, features a segmented hinge design and accommodates various body parts, including the back, buttocks, thighs, and calves. The drive assembly 3, as the core power output, comprises multiple independent drive components. Through the coordinated action of these components, it provides stable power for adjusting various parts of the adjustable seat. In this invention, the support frame 1, the multi-segment adjustable frame 2, and the drive assembly 3 work together to achieve the functions of a "thin and lightweight, multi-part independent adjustment, and stable support" adjustable seat, solving the problem that existing adjustable seats struggle to balance thinness and adjustability.

[0023] The core design concept of this invention is to partially integrate the drive component 3 by designing the mounting cavity of the support frame 1, and to achieve angle adjustment of various parts of the adjustable seat by relying on the segmented hinge design of the multi-segment adjustable frame 2 and the power output of the drive component 3.

[0024] In related technologies, a lightweight and thin structure and independent adjustment of multiple parts and angles significantly affect the user experience of adjustable chairs—especially adjustable chairs used as yoga chairs—and are two important design considerations. The inventors of this case discovered that adjustable chairs face the challenge of simultaneously achieving a lightweight and thin structure and independent adjustment of multiple parts and angles during design. Specifically, if the focus is on achieving a thinner seat, it often requires compressing the internal installation space, especially limiting or reducing the number of drive components and reducing the number of independently adjustable parts on the seat. This results in the inability to achieve independent multi-angle adjustment of many parts of the body, making it difficult to adapt to different usage scenarios. Conversely, if the focus is on achieving independent adjustment of multiple parts and angles, multiple drive components need to be set up and sufficient movement space needs to be reserved, inevitably leading to an increase in seat volume and thickness, making it difficult to achieve a lightweight and thin design and adapting to space-constrained scenarios such as small apartments and yoga studios. The adjustable chair solution corresponding to this embodiment, through the coordinated operation of the supporting seat frame, multi-segment adjustment frame, and drive components, can specifically solve the above-mentioned core technical problems, specifically: The inventors of this case discovered that the support frame 1, which is used to detachably connect to the support base 4, requires a certain thickness and structure to ensure strength. Therefore, embodiments of the present invention, through the mounting cavity 11 provided inside the support frame 1, provide a reasonable built-in mounting space for the drive assembly 3, which includes multiple drive components; furthermore, as... Figures 1-3As shown, the arrangement of the drive component 3 partially built into the mounting cavity 11 can minimize the external space occupied by the drive component 3, effectively achieving a thinner and lighter seat design. In addition, the multi-segment adjustable frame 2 includes a fixed support part 21 and a main adjustment mechanism 22. The fixed support part 21 is connected to the support frame 1 to form a structure that supports the human buttocks of the adjustable seat. The main adjustment mechanism 22 includes multiple adjustment parts, and the adjustment parts in the main adjustment mechanism 22 are hinged to the support frame 1 or other adjacent adjustment parts. This segmented hinged design of the multi-segment adjustable frame 2 ensures the continuity of support and provides sufficient rotation space for each adjustment part.

[0025] As mentioned above, for the drive assembly 3, the mounting cavity 11 accommodates at least a portion of a drive member, and the drive member and the adjustment part are arranged in a one-to-one correspondence to drive the adjustment part to rotate, thereby realizing the multi-posture (or multi-angle) adjustment of the adjustable seat and ensuring that the seat does not have to limit the adjustment angle due to the thin and light design. To the knowledge of the inventors of this case, in related technologies, whether or not large-angle adjustment of multiple parts can be made can also significantly affect the user's experience of the adjustable seat (especially the adjustable seat as a yoga chair), and whether or not large-angle adjustment of multiple parts can be made is also difficult to achieve in harmony with the thin and light design.

[0026] As can be seen from the above, the combination of the above structures can improve the technical problem in related technologies where adjustable seats cannot simultaneously achieve a lightweight structure and independent adjustment of multiple parts and angles, thus balancing the flexibility of use and spatial adaptability, and improving the practicality and user experience of the seat.

[0027] The following is a more detailed design of a possible embodiment of the present invention: In this embodiment, as Figures 1-3 As shown, the support frame 1 is integrally injection molded and has a rectangular structure. The aforementioned mounting cavity 11 is integrally formed inside. The mounting cavity 11 has a cuboid structure, and reinforcing ribs are evenly distributed on its inner wall. These reinforcing ribs are integrally formed with the support frame 1 to enhance the structural strength of the mounting cavity 11, preventing deformation of the inner wall of the mounting cavity due to the housing of the driving component. Simultaneously, they provide a stable support for the installation of the driving component, ensuring that the driving component does not shake during operation and guaranteeing the stability of power output. It is understood that, in possible embodiments, given the presence of the mounting cavity 11, the specific external structure of the support frame 1 can be flexibly designed by those skilled in the art.

[0028] like Figures 1-3As shown, the main adjustment mechanism 22 includes multiple independent adjustment sections. The fixed support section 21 is a support frame corresponding to the human buttocks, integrally formed with the support seat frame 1. That is, the fixed support section 21 and the support seat frame 1 are integrally injection molded, forming an inseparable whole structure. As the core support area of ​​the seat, it stably supports the weight of the human buttocks and provides a mounting base for other adjustment sections. Understandably, in possible embodiments, the fixed support section 21 and the support seat frame 1 can also be fixedly connected by common methods such as welding.

[0029] like Figure 4 , Figures 6-8 As shown, the main adjustment mechanism 22 includes three adjustment parts: a backrest adjustment part 221, a thigh adjustment part 222, and a calf adjustment part 223. These three parts respectively correspond to the support needs of the human back, thigh, and calf. All are integrally injection molded to ensure consistent overall structural strength and uniform material, facilitating production and assembly. Therefore, the adjustable seat in this embodiment has multiple adjustable parts. Specifically, the backrest adjustment part 221 supports the human back, and its lower end is hinged to the rear end of the fixed support part 21. The hinge point is a hinge connection, allowing the backrest adjustment part 221 to rotate flexibly around the hinge point without jamming or abnormal noise during rotation. The thigh adjustment part 222 supports the human thigh, and its rear end is hinged to the front end of the fixed support part 21. The hinge point is also a hinge connection, ensuring smooth rotation. The calf adjustment part 223 supports the human calf, and its rear end is hinged to the front end of the thigh adjustment part 222. The hinge point uses the same hinge as described above, ensuring the consistency and stability of the rotation of each adjustment part. Figure 4 As shown, in a possible embodiment, springs are provided on the backrest adjustment section 221 and the leg adjustment section 223 to provide greater support when supporting the human body; in one possible embodiment, viewed from the bottom up, the adjustable seat may also have springs on the backrest adjustment section 221 and the leg adjustment section 223 as shown in the figure. Figure 5 The internal reinforcing rib structure shown.

[0030] In this embodiment, Figure 1The adjustable seat's length direction (i.e., the front-to-back direction) is the length direction. It can be seen that the frame length of the backrest adjustment part 221 is greater than the frame length of the calf adjustment part 223, the frame length of the calf adjustment part 223 is greater than the frame length of the thigh adjustment part 222, and the frame length of the fixed support part 21 is between the calf adjustment part 223 and the thigh adjustment part 222. This design allows the adjustable seat of this embodiment to form a stepped length layout that adapts to the different physiological structural dimensions of the human back, buttocks, thighs, and calves. This layout design is based on precise ergonomic calculations, perfectly conforming to the human physiological curves. When the human body is in a sitting or lying position, the back, buttocks, thighs, and calves can fully conform to their corresponding support parts, avoiding discomfort caused by concentrated local force, while ensuring even distribution of support force in each part, improving user comfort, especially suitable for long-term use scenarios such as yoga training and office rest.

[0031] Furthermore, such as Figures 1-5 As shown, the multi-segment adjustment frame 2 also includes multiple hinged connectors 23, which are elongated structures. In this embodiment, hinged connectors 23 are provided between the fixed support portion 21 and the main adjustment mechanism 22, and also between adjacent adjustment portions (e.g., thigh adjustment portion 222 and calf adjustment portion 223) in the main adjustment mechanism 22. Between the fixed support portion 21 and the main adjustment mechanism 22, both ends of the hinged connector 23 are connected to the adjacent fixed support portion 21 and the corresponding adjustment portion, respectively; between adjacent adjustment portions, both ends of the hinged connector 23 are connected to the corresponding adjustment portion, respectively. In this embodiment, the hinged connector 23 itself has a two-segment chain-like structure; however, it can be understood that in possible implementations, the chain link itself can serve as a hinged connector. In this case, each hinge point between the fixed support portion 21 and the main adjustment mechanism 22 should be considered as being formed by two hinged connectors.

[0032] As described above, considering each adjustment section and the fixed support section 21 as different frame structures, the core functions of the hinge connector 23 are twofold: first, to achieve hinged rotational cooperation between adjacent frame structures, providing a flexible connection basis for the rotation of each adjustment section, ensuring that each adjustment section can rotate smoothly around the hinge point without any jamming or sticking; second, to extend and fill the gaps between adjacent frame structures, compensating for the overall strength of the adjustable seat. Understandably, since the multi-segment adjustable frame 2 adopts a segmented hinged design, there will inevitably be certain gaps between adjacent frames. Without the hinge connector 23, the seat support would be discontinuous, affecting the user experience. The hinge connector 23 precisely fills these gaps, allowing the multi-segment adjustable frame 2 to form a relatively continuous support surface, ensuring stable support for all parts of the human body, while not affecting the rotational freedom of each adjustment section. Furthermore, it is understood that those skilled in the art are capable of flexibly designing the dimensions of the hinge connector 23 as needed to ensure the compatibility between the hinge connector 23 and the adjustment part or fixed bearing part 21 to which it is connected; in possible embodiments, depending on the application location or whether the gaps between the adjustment parts are the same or different, different hinge connectors 23 may also have different lengths, so that the hinge connector 23 will not interfere with the rotation of the adjustment parts due to being too long, nor will it be too short to fill the gaps sufficiently, thus ensuring the accuracy of the function.

[0033] like Figures 1-3 As shown, the drive assembly 3 includes three independent drive components: a first drive component 31, a second drive component 32, and a third drive component 33. All three utilize miniature electric actuators, providing ample power for adjusting each adjustment section. They are also compact and lightweight, fitting the mounting cavity 11 of the seat frame 1 and facilitating a slimmer seat design. Specifically, the first drive component 31 drives the backrest adjustment section 221, the second drive component 32 drives the thigh adjustment section 222, and the third drive component 33 drives the lower leg adjustment section 223. These three components operate independently without interference, working together to achieve individual adjustment of each section and meet different user posture requirements.

[0034] For ease of description and distinction, the extended ends of the push rods of the first driving member 31, the second driving member 32, and the third driving member 33 are referred to as the output ends, and the relatively thicker end of each driving member, located away from this end, is referred to as the non-output end. Specifically, as... Figure 7As shown, the output end of the first driving member 31 is hinged to the support frame 1 (at the inner wall of the mounting cavity 11); the non-output end of the first driving member 31 is hinged to the backrest adjustment part 221, and the first driving member 31 is used to drive the backrest adjustment part 221 to rotate about the hinge point between the backrest adjustment part 221 and the fixed support part 21. The output end of the second driving member 32 is hinged to the support frame 1 (at the inner wall of the mounting cavity 11), and its non-output end is hinged to the thigh adjustment part 222, and the second driving member 32 is used to drive the thigh adjustment part 222 to rotate about the hinge point between the thigh adjustment part 222 and the fixed support part 21.

[0035] For the third drive member 33, since its installation position needs to be adapted to the driving requirements of the calf adjustment part 223, and since if the third drive member 33 is at least partially built into the mounting cavity 11, it may cause the installation space to be cramped or insufficient. In order to ensure that the position of the third drive member 33 does not restrict the adjustment angle of the thigh adjustment part 222 and the calf adjustment part 223, in this embodiment, the third drive member 33 is set outside the mounting cavity 11 as a whole. Specifically, it can be regarded as being located at the bottom of the thigh adjustment part 222 and connected to the bottom frame of the thigh adjustment part 222. The output end of the third drive member 33 is hinged to the calf adjustment part 223, and the non-output end is hinged to the thigh adjustment part 222. The third drive member 33 is used to drive the calf adjustment part 223 to rotate around the hinge point of the calf adjustment part 223 and the thigh adjustment part 222.

[0036] In this embodiment, as Figure 7 and Figure 8 As shown, when their respective push rod portions are in a certain retraction stroke, the first drive member 31 and the second drive member 32 can be considered as being built into the mounting cavity 11 of the support frame 1 (understandably, when their respective push rod portions are in a certain extension stroke, the first drive member 31 and the second drive member 32 can be considered as being partially located within the mounting cavity 11), and the third drive member 33 is disposed outside the mounting cavity 11. This "partially built-in, partially external" arrangement is one of the core means of achieving a thin and light design in this embodiment: on the one hand, the first drive member 31 and the second drive member 32 are placed in a certain extension stroke, and the third drive member 33 is disposed outside the mounting cavity 11. The second drive component 32 is built-in, utilizing the space of the mounting cavity 11 to hide the drive component, effectively reducing the overall thickness of the seat and avoiding the bulky size caused by external drive components. On the other hand, the third drive component 33 is externally placed to accommodate the drive position requirements of the lower leg adjustment part 223 and to avoid it occupying the space of the mounting cavity 11, ensuring sufficient installation space for the first drive component 31 and the second drive component 32. At the same time, it avoids the limitation of the adjustment angle of the thigh adjustment part 222 and the lower leg adjustment part 223 caused by the third drive component 33 being built-in, thus balancing thinness and adjustment flexibility.

[0037] Furthermore, such as Figure 8As shown, the first driving component 31 can drive the backrest adjustment part 221 to achieve a rotation angle adjustment of -20° to 75° relative to the support frame 1; the second driving component 32 can drive the thigh adjustment part 222 to achieve a rotation angle adjustment of 0° to 35° relative to the support frame 1; and the third driving component 33 can drive the calf adjustment part 223 to achieve a rotation angle adjustment of -20° to 0° relative to the thigh adjustment part 222. The angle adjustment range of each adjustment part conforms to the range of human physiological activities. After ergonomic calculations and multiple test verifications, it can not only meet the needs of multiple usage scenarios, but also avoid structural damage caused by over-adjustment. Among them, the forward tilt angle of the backrest (e.g., -20°) is suitable for scenarios such as yoga forward leaning, desk work, reading, etc., which can provide forward support for the human back and make it easier for the user to maintain a forward leaning posture; the backward tilt angle of the backrest (corresponding to 0° to 75°) is suitable for scenarios such as rest, relaxation, and lunch break, in which the human back can naturally fit and relieve back fatigue. The second drive unit 32 can drive the thigh adjustment part 222 to adjust its angle relative to the support frame 1 from 0° to 35°. The state where the two are in the same plane (corresponding to 0°) is suitable for a normal sitting posture. The upward angle of the thigh adjustment part 222 (corresponding to 0° to 35°) is suitable for scenarios such as leg relaxation and promoting leg blood circulation, especially suitable for people who sit for long periods of time. The third drive unit 33 can drive the calf adjustment part 223 to adjust its angle relative to the thigh adjustment part 222 from -20° to 0°. The state where the two are in the same plane (corresponding to 0°) is suitable for a lying posture. The downward tilt angle of the calf adjustment part 223 (corresponding to -20° to 0°) is suitable for the calf to hang naturally when lying down, which can relieve leg muscle tension and improve comfort during rest.

[0038] The aforementioned angle adjustment range has been precisely calculated ergonomically and verified through multiple experiments. It not only meets the usage needs of different scenarios but also avoids structural damage caused by over-adjustment. On the one hand, the angle range conforms to the range of human physiological activity, preventing discomfort from excessive adjustment and ensuring adaptability to different scenarios from insufficient adjustment. On the other hand, the angle range is precisely matched with the stroke of the drive component, the length of the support arm 12, and the position of the hinge point, ensuring smoothness and stability during adjustment. When adjusted to the limit angle within the preset range, the drive component stops moving, preventing damage to the drive component or deformation of the adjustment part due to excessive extension or retraction. Understandably, the angle adjustment range can be flexibly adjusted by those skilled in the art according to actual needs, as long as multi-scenario adaptability and structural safety are achieved, all of which fall within the scope of protection of this invention.

[0039] like Figures 1-3 , Figure 7As shown, a support arm 12 is provided between the drive component 3 and the corresponding adjustment part. The support arm 12 is the core power transmission component between the drive component 3 and the adjustment part, and is set one-to-one with each drive component to form a hinge relationship between each drive component and the corresponding adjustment part. The structural design and connection method of the support arm 12 directly determine the stability and smoothness of power transmission, and is also the key structure for solving the problems of "power transmission loss and adjustment jamming" in this embodiment. In this embodiment, the support arm 12 can withstand the power transmitted by the drive component, avoiding deformation such as bending and breakage during power transmission. At the same time, it is lightweight and will not increase the overall weight of the seat, which is suitable for the thin and light design of the seat.

[0040] Furthermore, the support arm 12 has a bent structure, the core purpose of which is to avoid adjacent frame structures and accommodate the rotation of each adjustment part: Since the drive component 3 is partially built-in and partially external, and the multi-segment adjustment frame 2 is a segmented structure, the installation space of each component is compact. If the support arm 12 adopts a straight rod structure, it will inevitably interfere with adjacent frames and drive components during the adjustment process, resulting in adjustment jamming, power transmission obstruction, and even damage to parts. The bent structure design can precisely avoid adjacent frames and drive components, leaving sufficient room for movement during the adjustment process, ensuring that each component does not interfere with each other, and at the same time, it can adapt to the installation position of each adjustment part in the drive component and the main adjustment mechanism 22, making the power transmission path more reasonable and smoother. The size of the support arm 12 matches the ends of each drive component and the edge parts of each adjustment part to ensure a firm connection. In possible embodiments, the support arm 12 can be as follows: Figure 9 The curved bending structure shown can also be adopted as follows: Figure 7 The structure shown is bent in a relatively straight manner.

[0041] Furthermore, in this embodiment, for the same support arm 12, one end of the support arm 12 is hinged to a driving member (e.g., the third driving member 33). The hinge point can optionally employ a clearance fit, which ensures that the support arm 12 rotates flexibly around the hinge point while avoiding power transmission offset caused by excessive clearance, ensuring that the extension and retraction power of the driving member can be accurately transmitted to the support arm 12. Additionally, the other end of the support arm 12 is integrally fixed to the frame of the corresponding adjustment part (e.g., the lower leg adjustment part 223), thereby directly and stably transmitting the power transmitted by the driving member to the corresponding adjustment part, preventing loosening during power transmission, and ensuring that the adjustment part rotates smoothly around its own hinge point without tilting or offset. It is understood that the support arm 12 and the corresponding adjustment part can also be fixedly connected by methods such as welding. It is understood that in possible implementations, the support arm 12 can be considered as part of the corresponding adjustment part.

[0042] The specific power transmission logic is as follows: When the drive unit is activated, its output end extends and retracts, causing the support arm 12 to rotate around the hinge point of the non-output end of the drive unit. Since the support arm 12 is connected to the frame of the corresponding adjustment part, and the adjustment part in this embodiment is hinged to the fixed bearing part 21 or an adjacent adjustment part, the extension and retraction of the support arm 12 will cause the corresponding adjustment part to rotate around its own hinge point, thereby achieving angle adjustment. For example, when the first drive unit 31 is activated, its output end extends, causing one end of the support arm 12 hinged to it to rotate upward. This will cause the other end of the support arm 12 to drive the backrest adjustment part 221 to rotate forward around the hinge point between the backrest adjustment part 221 and the fixed bearing part 21, thereby reducing the backrest angle. Similarly, when the output end of the first drive unit 31 retracts, the backrest adjustment part 221 moves in the opposite direction. In this way, the entire power transmission process is smooth and without power loss. The bending structure of the support arm 12 always avoids the adjacent frame and the drive unit, ensuring smooth adjustment.

[0043] In this embodiment, as Figures 4-7 As shown, the backrest adjustment section 221, thigh adjustment section 222, and calf adjustment section 223 all adopt a hollow frame structure. This structure is another core design feature of this embodiment that achieves lightweight and thinness while also improving user comfort. The hollow frame structure can be formed by multiple parallel transverse ribs and multiple parallel longitudinal ribs arranged in an interlaced pattern to form a uniform hollow grid, such as... Figure 5 As shown. The advantages of this structural design are: firstly, compared to a solid frame structure, the hollow frame structure can effectively reduce the weight of the frame while ensuring a certain level of support strength. Combined with the partially built-in arrangement of the drive component 3, this achieves a lightweight design for the seat; secondly, the hollow structure can reduce the contact area between the frame and the human body, improving ventilation and heat dissipation, and avoiding stuffiness and discomfort after prolonged use, making it especially suitable for summer use; in addition, the hollow mesh structure can enhance the elasticity of the frame. When the human body comes into contact with it, it can produce slight elastic deformation, improving the comfort of support, while also dispersing the pressure on the human body and avoiding localized force concentration.

[0044] It should be noted that the frame of the hollow frame structure has a certain thickness to enhance the connection strength with the support arm 12 and the hinge connector 23, and to prevent the connection from being damaged due to stress.

[0045] In a specific embodiment, such as Figure 3As shown, with the height direction of the adjustable seat as the thickness direction, the thickness of the backrest adjustment part 221, thigh adjustment part 222, and calf adjustment part 223 is 10cm. When the adjustable seat is in a lying position with the backrest adjustment part 221, thigh adjustment part 222, and calf adjustment part 223 all coplanar with the fixed support part 21, the overall thickness is controlled to be around 10cm. This overall thickness setting is the core indicator of the lightweight design in this embodiment and is also the result of precise matching of the dimensions of each component. Specifically, the overall thickness of the adjustable seat is limited by the arrangement of the mounting cavity 11 of the support frame 1 to accommodate the first drive component 31 and the second drive component 32, and the hollow frame structure of the multi-segment adjustment frame 2. After the drive component is built in, its top is preferably flush with the top of the support frame 1 and will not protrude from the surface of the support frame 1. The multi-segment adjustment frame 2 is fixed to the top of the support frame 1. The two work together to achieve the lightweight design of the seat.

[0046] The advantages of this slim design in this invention are: firstly, it facilitates storage; when the chair is adjusted to a reclining position, it can be stacked for storage, saving space and making it suitable for small apartments, yoga studios, and other spaces with limited capacity; secondly, it facilitates movement; the slim design reduces the overall weight of the chair, making it easy for ordinary adults to move and improving ease of use; and thirdly, it is suitable for various placement scenarios, avoiding excessive space occupation due to its large size, and can be flexibly placed in living rooms, bedrooms, yoga studios, offices, and other settings. It should be noted that, without affecting the installation and functionality of the components, the overall thickness can be flexibly adjusted by those skilled in the art according to actual needs, as long as a slim design is achieved, and all such adjustments fall within the scope of this invention.

[0047] like Figures 10-13 As shown, the support base 4 serves as the bottom support structure of the seat, ensuring stable placement and adapting to different usage scenarios. The support base 4 stably supports the overall weight of the seat while being lightweight, making it easy to disassemble and replace. The support base 4 includes two types: an arc-shaped base (such as...) Figure 11 and Figure 12 (as shown) and disc-type fixed base (such as Figure 13 As shown in the image, users can flexibly choose the installation method according to their usage scenarios, thus improving the flexibility of the seat.

[0048] The detachable connection between the support base 4 and the bearing frame 1 can optionally be a bolt connection. For example, the bottom of the bearing frame 1 has evenly distributed threaded holes, and the support base 4 has corresponding through holes, with the through holes and threaded holes precisely aligned. During installation, the bolts are passed through the through holes of the support base 4 and screwed into the threaded holes of the bearing frame 1. After tightening, the support base 4 and the bearing frame 1 are fixedly connected. During disassembly, the bolts are unscrewed to separate the support base 4 from the bearing frame 1. Disassembly is convenient and facilitates later maintenance and scene switching. It is understood that other equivalent methods such as snap-fit ​​connections and tenon joints can also be used for the detachable connection, as long as convenient disassembly and stable connection can be achieved, all of which fall within the protection scope of this invention.

[0049] As described above, the working process of the adjustable seat provided in this embodiment revolves around the angle adjustment of each adjustment part. Combined with the power transmission logic of the support arm 12 and the gap filling function of the hinge connector 23, the specific working process is as follows: When the backrest posture needs to be adjusted, the first drive component 31 is activated. The first drive component 31 drives the support arm 12 hinged to it, and the support arm 12 then drives the backrest adjustment part 221. The backrest adjustment part 221 rotates around its hinge point with the fixed support part 21 to achieve angle adjustment. During the adjustment process, the hinge connector 23 fills the gap between the fixed support part 21 and the backrest adjustment part 221 to ensure continuous support and prevent the human back from being unsupported. The bending structure of the support arm 12 precisely avoids the adjacent frame and drive component to avoid interference and ensure smooth adjustment. When the desired angle is reached, the first drive component 31 is turned off, and the backrest adjustment part 221 maintains the current angle to achieve posture locking.

[0050] When thigh posture needs to be adjusted, similarly, the second drive unit 32 is activated, and the output end of the second drive unit 32 performs a telescopic movement, driving the support arm 12 hinged to it to rotate; the support arm drives the thigh adjustment part 222 to rotate around the hinge point between the thigh adjustment part 222 and the fixed bearing part 21 to achieve angle adjustment; during the adjustment process, the hinge connector 23 fills the gap between the fixed bearing part 21 and the thigh adjustment part 222 to ensure that the human thigh is stably supported; the bending structure of the support arm 12 avoids adjacent frames and drive units to ensure smooth adjustment; after adjusting to the required angle, the second drive unit 32 is turned off to lock the thigh posture.

[0051] When the lower leg posture needs to be adjusted, similarly, the third drive unit 33 is activated, and the output end of the third drive unit 33 performs a telescopic movement, driving the support arm 12 hinged to it to rotate; the support arm 12 drives the lower leg adjustment part 223 to rotate around the hinge point between the lower leg adjustment part 223 and the thigh adjustment part 222, thereby realizing angle adjustment; during the adjustment process, the hinge connector 23 fills the gap between the thigh adjustment part 222 and the lower leg adjustment part 223, ensuring that the human lower leg is stably supported; the bending structure of the support arm 12 avoids adjacent frames and drive units, ensuring smooth adjustment; after adjusting to the required angle, the third drive unit 33 is turned off to lock the lower leg posture.

[0052] Understandably, when the chair needs to be used in a different setting, the bolts can be removed to replace the curved base or the disc-shaped fixed base: if used for relaxation, the curved base will make the chair look more dynamic and curved; if used for office work or yoga training, the disc-shaped fixed base can be replaced to ensure the chair is stable and prevents it from wobbling; when the chair needs to be stored, the various adjustment parts can be adjusted to a flat position that is coplanar with the fixed support part 21 or to a state with a suitable storage space, so that it can be stacked and stored using its 10cm thickness, saving space.

[0053] It is understood that the dimensions, materials, angles, and other parameters of each component of the adjustable seat in this embodiment can be flexibly adjusted by those skilled in the art according to actual needs, as long as the core functions of the present invention (lightweight, independent adjustment of multiple parts, stable support, and smooth power transmission) can be achieved, all of which fall within the protection scope of the present invention; at the same time, the control method of the drive component 3 can be wired control or wireless remote control, and the control switch can be set on the side of the support frame 1 for easy user operation, all of which do not affect the protection scope of the present invention.

[0054] Understandably, in possible implementations, the adjustable chair provided in this embodiment can be widely used in various scenarios such as yoga studios, offices, homes, and hotels, adapting to the usage needs of different groups of people: yoga enthusiasts can adjust the angles of various parts to adapt to the support needs of different yoga movements; office workers can adjust to a comfortable sitting posture to relieve fatigue from prolonged sitting; home users can adjust to a lying position for lunch breaks and relaxation, demonstrating good practicality and scenario adaptability.

[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An adjustable seat, characterized in that, The adjustable seat includes: A support frame, the support frame having an internal mounting cavity; the bottom of the support frame is used to connect to the support base of the adjustable seat; A multi-segment adjustable frame includes a fixed support part and a main adjustment mechanism. The fixed support part is connected to the support frame to form a structure that supports the human buttocks of the adjustable seat. The main adjustment mechanism includes multiple adjustment parts, and the adjustment parts in the main adjustment mechanism are hinged to the support frame or adjacent adjustment parts. A drive assembly includes multiple independent drive components, wherein the mounting cavity accommodates at least a portion of one of the drive components, and the drive components and the adjustment parts are arranged in a one-to-one correspondence for driving the adjustment parts to rotate, thereby realizing the posture adjustment of the adjustable seat.

2. The adjustable seat according to claim 1, characterized in that, The multi-segment adjustment frame also includes a hinged connector. The fixed bearing part and the adjacent adjustment part are provided with the hinged connector for hinged connection between the two. The adjustment parts adjacent to each other in the main adjustment mechanism are provided with the hinged connector for hinged connection between the two.

3. The adjustable seat according to claim 2, characterized in that, The adjustable seat includes a plurality of the hinged connectors; the length of the hinged connectors and the gap between the fixed support portion and the adjacent adjustment portion are adapted between the fixed support portion and the adjustment portion; the length of the hinged connectors and the gap between the adjustment portions are adapted between adjacent adjustment portions in the overall adjustment mechanism.

4. The adjustable seat according to claim 1, characterized in that, The main adjustment mechanism has multiple adjustment parts, namely a backrest adjustment part, a thigh adjustment part, and a calf adjustment part. The fixed support part is a support frame corresponding to the human buttocks, and the fixed support part is integrated with or fixedly connected to the support seat frame. The fixed support part is located on the support seat frame. The frame length of the backrest adjustment part is greater than the frame length of the calf adjustment part, the frame length of the calf adjustment part is greater than the frame length of the thigh adjustment part, and the frame length of the fixed support part is between the calf adjustment part and the thigh adjustment part.

5. The adjustable seat according to claim 4, characterized in that, The plurality of driving components of the drive assembly are independent first driving component, second driving component, and third driving component. The first driving component drives the backrest adjustment part, the second driving component drives the thigh adjustment part, and the third driving component drives the calf adjustment part. The non-output end of the first driving component is hinged to the backrest adjustment part and the output end is hinged to the support frame. The non-output end of the second driving component is hinged to the thigh adjustment part and the output end is hinged to the support frame. The non-output end of the third driving component is hinged to the thigh adjustment part and the output end is hinged to the calf adjustment part. The mounting cavity accommodates at least a portion of both the first and second driving members, and the third driving member is disposed outside the mounting cavity.

6. The adjustable seat according to claim 5, characterized in that, The first drive member is configured to drive the backrest adjustment part to achieve a rotation angle adjustment of -20° to 75° relative to the support frame, the second drive member is configured to drive the thigh adjustment part to achieve a rotation angle adjustment of 0° to 35° relative to the support frame, and the third drive member is configured to drive the calf adjustment part to achieve a rotation angle adjustment of -20° to 0° relative to the thigh adjustment part.

7. The adjustable seat according to claim 5, characterized in that, Each of the aforementioned driving components and its corresponding adjustment part is provided with a support arm in a one-to-one correspondence; in the adjustable seat, one end of the support arm is hinged to one end of a driving component, and the other end is fixedly connected or integrally connected to the adjustment part driven by the driving component; the support arm has a bent or arc-shaped structure. The first drive member is hinged to the backrest adjustment part via a support arm, the second drive member is hinged to the thigh adjustment part via a support arm, and the third drive member is hinged to the calf adjustment part via a support arm.

8. The adjustable seat according to claim 7, characterized in that, The backrest adjustment section, thigh adjustment section, and calf adjustment section have a hollow frame structure; the outer periphery of the hollow frame structure is fixedly connected to the corresponding hinged connector or integrally formed.

9. The adjustable seat according to claim 4, characterized in that, The thickness of the backrest adjustment section, thigh adjustment section, and calf adjustment section is 10cm.

10. The adjustable seat according to claim 1, characterized in that, The support base is an arc-shaped base or a disc-shaped fixed base.

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