Seat, seat adjusting method and control device

Abstract

The invention discloses a seat, an adjusting method of the seat and a control device, the seat comprises a base assembly, a seat back assembly, a sensor and an adjusting mechanism, the seat back assembly is movably connected with the base assembly, the seat back assembly has a first state and a second state which can be switched, the sensor is arranged on the seat back assembly, and the adjusting mechanism is arranged on the sensor. The monitoring mechanism is arranged on the chair back assembly and used for monitoring the angle change between the chair back assembly and the horizontal plane, and the adjusting mechanism is arranged on the chair back assembly and used for adjusting the chair back assembly to be switched between the first state and the second state. According to the chair, the angle change between the chair back assembly and the horizontal plane is monitored in real time through the sensor, the state of the chair back assembly is automatically switched in combination with the adjusting mechanism, the supporting mode can be dynamically adjusted according to the actual sitting posture of a user, intelligent switching of the chair back state is achieved, frequent manual operation of the user is not needed, and the user experience is improved. The comfort in the using process is remarkably improved, the natural physiological curvature of the spine can be maintained, and the risks of waist fatigue and spine injury caused by sedentariness are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of seating, and more particularly to a seat, a method for adjusting the seat, and a control device. Background Art

[0002] Related technologies have pointed out that there are certain limitations in the support strength adjustment of the lumbar support design of current office chairs. Most products rely on manual adjustment by users, which is difficult to accurately meet the actual needs of different users in different sitting postures and cannot achieve dynamic and intelligent adjustment as the user's posture changes. This not only affects the comfort of use but may also have an adverse impact on the user's spinal health. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, the present invention provides a seat that can dynamically adjust the support mode according to the actual sitting posture of the user.

[0004] The present invention also provides a method for adjusting the seat.

[0005] The present invention also provides a control device.

[0006] The seat according to the first aspect of the present invention includes: a base assembly; a backrest assembly, the backrest assembly being movably connected to the base assembly, the backrest assembly having a switchable first state and second state; a sensor disposed on the backrest assembly for monitoring the angle change between the backrest assembly and the horizontal plane; an adjustment mechanism disposed on the backrest assembly for adjusting the backrest assembly to switch between the first state and the second state.

[0007] The seat according to the present invention can dynamically adjust the support mode according to the actual sitting posture of the user by using the sensor to continuously monitor the angle change between the backrest assembly and the horizontal plane and automatically switching the state of the backrest assembly in combination with the adjustment mechanism, realizing intelligent switching of the backrest state, eliminating the need for frequent manual operation by the user, significantly improving the comfort during use, helping to maintain the natural physiological curvature of the spine, and reducing the risk of lumbar fatigue and spinal injury caused by long-term sitting.

[0008] In some embodiments, the sensor is an inertial sensor or a position sensor.

[0009] In some embodiments, the backrest assembly includes a backrest structure and a lumbar support structure. The lumbar support structure is connected to the backrest structure, and the adjustment mechanism is provided on the lumbar support structure. When the lumbar support structure switches from the first state to the second state, the adjustment mechanism drives the lumbar support structure to move away from the backrest structure, and / or a support cavity is formed in the lumbar support structure, and the adjustment mechanism drives the gas in the support cavity to move towards the outside of the support cavity.

[0010] In some embodiments, the seat further includes a control module, and both the sensor and the adjustment mechanism are electrically connected to the control module.

[0011] In some embodiments, one of the lumbar support structure and the backrest structure forms a first sliding portion, and the other of the lumbar support structure and the backrest structure forms a second sliding portion. The lumbar support structure and the backrest structure are relatively movable through the cooperation of the first sliding portion and the second sliding portion.

[0012] In some embodiments, the adjustment mechanism includes a first driving member and a second driving member. The first driving member is connected to the lumbar support structure to drive the relative movement between the lumbar support structure and the backrest structure, and the second driving member is connected to the lumbar support structure to drive the gas to enter and exit the support cavity.

[0013] In some embodiments, the seat further includes a memory module. The memory module is electrically connected to the control module. The memory module is used to store the pressure in the support cavity and / or the relative position between the lumbar support structure and the backrest structure when the lumbar support structure is in the first state; and / or the memory module is used to store the pressure in the support cavity and / or the relative position between the lumbar support structure and the backrest structure when the lumbar support structure is in the second state.

[0014] In some embodiments, the seat further includes chair legs, and the base assembly is provided on the chair legs; an armrest assembly, the armrest assembly is connected to the backrest assembly and is located on both sides in the width direction of the base assembly for supporting the user's arms; a leg rest assembly, the leg rest assembly is rotatably connected to the base assembly, and the leg rest assembly and the backrest assembly are arranged at intervals in the front-back direction of the base assembly.

[0015] The adjustment method of the seat according to the second aspect of the present invention is applied to the seat according to the first aspect of the present invention above. The adjustment method includes:

[0016] Step S1, obtaining the angle change between the backrest assembly and the horizontal plane;

[0017] Step S2: Determine whether the backrest assembly is in the first state or the second state. If the backrest assembly is in the first state, execute Step S3; if the backrest assembly is in the second state, execute Step S4;

[0018] Step S3: When the backrest assembly is in the first state, inflate the support cavity of the lumbar support structure and simultaneously drive the lumbar support structure to move towards the backrest structure;

[0019] Step S4: When the backrest assembly is in the second state, release the gas in the support cavity of the lumbar support structure and simultaneously drive the lumbar support structure to move away from the backrest structure;

[0020] Step S5: Determine whether the pressure in the support cavity is balanced. If it is, stop the operation of the adjustment mechanism; if not, execute Step S1.

[0021] According to the adjustment method of the seat of the present invention, by detecting the change in the angle between the backrest assembly and the horizontal plane, the system can automatically determine the current sitting posture state of the user, thereby automatically triggering the adjustment action of the lumbar support structure without manual intervention, improving the convenience and intelligence level of use. Moreover, by judging whether the pressure in the support cavity is balanced to decide whether to stop the operation of the adjustment mechanism, a closed-loop feedback control system is formed to ensure the stability and reliability of the adjustment process and avoid over-adjustment or mechanical damage.

[0022] The control device according to the third aspect of the present invention includes: a processor and a memory. The memory is adapted to store multiple program codes, and the program codes are adapted to be loaded and run by the processor to execute the adjustment method of the seat of the second aspect of the present invention.

[0023] The control device according to the present invention can effectively support the operation of the adjustment method of the seat, thereby improving the reliability and intelligence level of the entire seat.

[0024] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a seat according to an embodiment of the present invention, wherein the backrest assembly of the seat is in the first state;

[0026] Figure 2 is Figure 1 a schematic diagram of the seat shown in

[0027] Figure 3 is a flowchart of the adjustment method of the seat according to an embodiment of the present invention.

[0028] Reference Numerals:

[0029] 100, seat;

[0030] 1, base assembly;

[0031] 2, backrest assembly; 21, backrest structure; 22, lumbar support structure; 221, support cavity;

[0032] 3, sensor;

[0033] 4, adjustment mechanism; 41, first driving member; 42, second driving member;

[0034] 5, chair leg; 6, armrest assembly; 7, leg rest assembly. Detailed Embodiment

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0036] Reference is made below Figure 1 and Figure 2 to describe the seat 100 according to an embodiment of the first aspect of the present invention.

[0037] As Figure 1 and Figure 2 shown, the seat 100 according to an embodiment of the first aspect of the present invention includes: a base assembly 1, a backrest assembly 2, a sensor 3, and an adjustment mechanism 4.

[0038] Specifically, the backrest assembly 2 is movably connected to the base assembly 1. The backrest assembly 2 has a switchable first state and a second state. The sensor 3 is disposed on the backrest assembly 2 for monitoring the angle change between the backrest assembly 2 and the horizontal plane. The adjustment mechanism 4 is disposed on the backrest assembly 2 for adjusting the backrest assembly 2 to switch between the first state and the second state.

[0039] It can be understood that the base assembly 1 is used to carry the user's body and provide stable support. The backrest assembly 2 is movably connected to the base assembly 1 and can change the angle relative to the base assembly 1 so as to adapt to the user's sitting posture change, that is, change the angle between the backrest assembly 2 and the horizontal plane. The sitting posture (reclined sitting posture or forward-leaning sitting posture) of the user on the seat 100. The sensor 3 is disposed on the backrest assembly 2 for real-time monitoring of the angle change between the backrest and the horizontal plane. Through the change of the angle data, the current sitting posture or body posture of the user can be judged. The adjustment mechanism 4 is installed on the backrest assembly 2 for automatically adjusting the backrest assembly 2 to switch between the first state and the second state according to the data collected by the sensor 3.

[0040] Existing seats are difficult to precisely meet the actual needs of different users in different sitting postures, nor can they achieve dynamic and intelligent adjustment as the user's posture changes. The seat 100 according to the embodiments of the present invention can monitor the angle change between the backrest assembly 2 and the horizontal plane in real time through the sensor 3, and automatically switch the state of the backrest assembly 2 in combination with the adjustment mechanism 4, and can dynamically adjust the support method according to the actual sitting posture of the user, realizing the intelligent switching of the backrest state, without the need for the user to frequently operate manually, significantly improving the comfort during use, helping to maintain the natural physiological curvature of the spine, and reducing the risk of lumbar fatigue and spinal injury caused by long-term sitting.

[0041] Optionally, the sensor 3 is an inertial sensor or a position sensor, and the inertial sensor includes a gyroscope sensor and an acceleration sensor.

[0042] Preferably, in order to ensure the measurement accuracy, the sensor 3 is set as a gyroscope sensor.

[0043] In some embodiments of the present invention, the backrest assembly 2 includes: a backrest structure 21 and a lumbar support structure 22. The lumbar support structure 22 is connected to the backrest structure 21, and the adjustment mechanism 4 is arranged on the lumbar support structure 22. When the lumbar support structure 22 switches from the first state to the second state, the adjustment mechanism 4 drives the lumbar support structure 22 to move away from the backrest structure 21, and / or a support cavity 221 is formed in the lumbar support structure 22, and the adjustment mechanism 4 drives the gas in the support cavity 221 to move towards the outside of the support cavity 221. That is to say, the backrest structure 21 is used to support the user's back, the lumbar support structure 22 is used to support the user's waist, and the backrest structure 21 and the lumbar support structure 22 together form the backrest assembly 2 to support the entire back to the waist of the user. When the lumbar support structure 22 switches from the first state to the second state, the relative position between the lumbar support structure 22 and the backrest structure 21 and the gas pressure in the support cavity 221 are changed. Thus, the active adjustment of the lumbar support structure 22 is realized, accurately supporting the waist, reducing the pressure on the spine, and improving the comfort of the seat 100.

[0044] Referring to Figure 1 As shown, the backrest assembly 2 is in the first state, and the angle between the backrest assembly 2 and the horizontal plane is relatively large. By adjusting the relative position between the lumbar support structure 22 and the backrest structure 21 in the up and down direction and adjusting the gas pressure in the support cavity 221, the accurate support of the lumbar support structure 22 for the user's waist is realized; Referring to Figure 2As shown, the backrest assembly 2 is in the second state, and the angle between the backrest assembly 2 and the horizontal plane is small. By adjusting the relative position of the lumbar support structure 22 in the vertical direction with respect to the backrest structure 21 and adjusting the gas pressure in the support cavity 221, precise support of the lumbar support structure 22 for the user's waist is achieved; when the user reclines, the backrest assembly 2 changes its angle relative to the horizontal plane. When the backrest assembly 2 switches from the first state to the second state, the lumbar support structure 22 moves downward, and at the same time, the gas pressure in the support cavity 221 decreases; when the user leans forward, the backrest assembly 2 changes its angle relative to the horizontal plane. When the backrest assembly 2 switches from the second state to the first state, the lumbar support structure 22 moves upward, and at the same time, the gas pressure in the support cavity 221 decreases.

[0045] In some feasible embodiments, when the state of the backrest assembly 2 switches, the relative position of the lumbar support structure 22 in the vertical direction with respect to the backrest structure 21 can be adjusted only, the gas pressure in the support cavity 221 can be adjusted only, or the relative position of the lumbar support structure 22 in the vertical direction with respect to the backrest structure 21 and the gas pressure in the support cavity 221 can be adjusted simultaneously.

[0046] In some embodiments of the present invention, the seat 100 further includes: a control module, and both the sensor 3 and the adjustment mechanism 4 are electrically connected to the control module. It can be understood that the control module receives the monitoring data of the sensor 3 and makes a decision based on a preset algorithm, and then sends an instruction to the adjustment mechanism 4 to perform corresponding actions. Moreover, the control module can also have a user interface function, allowing the user to directly input the user's preference settings or other relevant information.

[0047] Furthermore, an AI algorithm (Artificial Intelligence) is set in combination with the sensor 3 and the control module to automatically adjust the position and strength of the lumbar support according to the user's weight, sitting posture habits, etc.

[0048] In some embodiments of the present invention, one of the lumbar support structure 22 and the backrest structure 21 is formed with a first sliding portion, and the other of the lumbar support structure 22 and the backrest structure 21 is formed with a second sliding portion. The lumbar support structure 22 and the backrest structure 21 move relative to each other through the cooperation of the first sliding portion and the second sliding portion. It can be understood that it can be the lumbar support structure 22 that forms the first sliding portion and the backrest structure 21 that forms the second sliding portion, or it can be the backrest structure 21 that forms the first sliding portion and the lumbar support structure 22 that forms the second sliding portion. The lumbar support structure 22 and the backrest structure 21 move relative to each other through the cooperation of the first sliding portion and the second sliding portion. Thus, the cooperation of the first sliding portion and the second sliding portion not only realizes the relative movement between the lumbar support structure 22 and the backrest structure 21, but also realizes the guiding function, preventing adjustment deviation between the lumbar support structure 22 and the backrest structure 21 and improving safety.

[0049] In some embodiments of the present invention, the adjustment mechanism 4 includes a first driving member 41 and a second driving member 42. The first driving member 41 is connected to the lumbar support structure 22 to drive the lumbar support structure 22 to move relative to the backrest structure 21, and the second driving member 42 is connected to the lumbar support structure 22 to drive gas to enter and exit the support cavity 221. It can be understood that the first driving member 41 is used to drive the lumbar support mechanism to move relative to the backrest structure 21, and the second driving member 42 is used to drive gas to enter or exit the support cavity 221, so as to change the gas pressure in the support cavity 221. Both the first driving member 41 and the second driving member 42 are electrically connected to the control module.

[0050] Optionally, the first driving member 41 may be a motor, and the second driving member 42 may be an air pump. The types of the first driving member 41 and the second driving member 42 are not limited thereto.

[0051] In some embodiments of the present invention, the seat 100 further includes: a memory module, the memory module is electrically connected to the control module, and the memory module is used to store the pressure in the support cavity 221 and / or the relative position between the lumbar support structure 22 and the backrest structure 21 when the lumbar support structure 22 is in the first state; and / or, the memory module is used to store the pressure in the support cavity 221 and / or the relative position between the lumbar support structure 22 and the backrest structure 21 when the lumbar support structure 22 is in the second state. Thus, by setting the memory module, not only the functionality and convenience of the seat 100 are improved, but also all the parameter values set by the user can be stored in the local memory module in digital form and can also be synchronized to the cloud server. When the user replaces the seat 100, logging in to the account, the current seat 100 can obtain the parameter values of the user and adjust the seat 100 to the user's set mode.

[0052] In some embodiments of the present invention, the seat 100 further includes: chair legs 5, an armrest assembly 6, and a leg rest assembly 7. The base assembly 1 is provided on the chair legs 5. The armrest assembly 6 is connected to the backrest assembly 2 and is located on both sides in the width direction of the base assembly 1 for supporting the user's arms. The leg rest assembly 7 is rotatably connected to the base assembly 1, and the leg rest assembly 7 and the backrest assembly 2 are arranged at intervals in the front-back direction of the base assembly 1. That is to say, the chair legs 5 provide basic support for the entire seat 100 to ensure the stability of the seat 100. The armrest assembly 6 provides arm support to help the user maintain a correct sitting posture and relieve the pressure on the shoulders and neck. The leg rest assembly 7 supports the user's legs, especially improving the leg comfort when resting. The leg rest assembly 7 is rotatably connected to the base assembly 1 and can be folded up when not in use to save space. Thus, the cooperation of multiple components improves the user's comfort and also helps to prevent various health problems caused by bad sitting postures.

[0053] According to the seat adjustment method of the second aspect embodiment of the present invention, it is applied to the seat according to the first aspect embodiment of the present invention asFigure 3 As shown in the figure, the adjustment method includes:

[0054] Step S1: Obtain the angle change between the backrest component and the horizontal plane;

[0055] Step S2: Determine whether the backrest component is in the first state and the second state. If the backrest component is in the first state, execute Step S3. If the backrest component is in the second state, execute Step S4;

[0056] Step S3: When the backrest component is in the first state, inflate the support cavity of the lumbar support structure, and at the same time drive the lumbar support structure to move towards the backrest structure;

[0057] Step S4: When the backrest component is in the second state, release the gas in the support cavity of the lumbar support structure, and at the same time drive the lumbar support structure to move away from the backrest structure;

[0058] Step S5: Determine whether the pressure in the support cavity is balanced. If it is, the adjustment mechanism stops running. If not, execute Step S1.

[0059] It can be understood that when the angle between the backrest component and the horizontal plane changes, the sensor sends a signal to the control module. The control module determines whether the backrest component is in the first state or the second state. If the backrest component is in the first state, inflate the support cavity of the lumbar support structure, and at the same time drive the lumbar support structure to move towards the backrest structure, and determine whether the pressure in the support cavity is balanced. If the pressure in the support cavity is balanced, the adjustment mechanism stops running. If the pressure in the support cavity is not balanced, re-obtain the angle change between the backrest component and the horizontal plane, and re-determine whether the backrest component is in the first state or the second state;

[0060] If the backrest component is in the second state, release the gas in the support cavity of the lumbar support structure, and at the same time drive the lumbar support structure to move away from the backrest structure, and determine whether the pressure in the support cavity is balanced. If the pressure in the support cavity is balanced, the adjustment mechanism stops running. If the pressure in the support cavity is not balanced, re-obtain the angle change between the backrest component and the horizontal plane, and re-determine whether the backrest component is in the first state or the second state;

[0061] According to the adjustment method of the seat of the embodiment of the present invention, by detecting the angle change between the backrest component and the horizontal plane, the system can automatically judge the current sitting posture state of the user, thereby automatically triggering the adjustment action of the lumbar support structure, without manual intervention, improving the convenience and intelligent level of use. And, by judging whether the pressure in the support cavity is balanced, it is decided whether to stop the operation of the adjustment mechanism, forming a closed-loop feedback control system to ensure the stability and reliability of the adjustment process, and avoiding over-adjustment or mechanical damage.

[0062] The control device according to the third aspect embodiment of the present invention includes: a processor and a memory. The memory is adapted to store multiple program codes, and the program codes are adapted to be loaded and run by the processor to execute the adjustment method of the seat according to the second aspect embodiment of the present invention above.

[0063] The control device according to the embodiment of the present invention can effectively support the operation of the seat adjustment method, thereby improving the reliability and intelligence level of the entire seat.

[0064] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0065] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0066] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0068] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A seat, characterized in that, Comprising: A base assembly; A backrest assembly, the backrest assembly being movably connected to the base assembly, the backrest assembly having a switchable first state and second state; A sensor, the sensor being disposed on the backrest assembly for monitoring an angular change between the backrest assembly and a horizontal plane; An adjustment mechanism, the adjustment mechanism being disposed on the backrest assembly for adjusting the backrest assembly to switch between the first state and the second state.

2. The seat according to claim 1, characterized in that The sensor is an inertial sensor or a position sensor.

3. The seat according to claim 1, characterized in that, The backrest assembly includes: a backrest structure and a lumbar support structure, the lumbar support structure being connected to the backrest structure, the adjustment mechanism being disposed on the lumbar support structure, when the lumbar support structure switches from the first state to the second state, the adjustment mechanism drives the lumbar support structure to move away from the backrest structure, and / or, a support cavity is formed in the lumbar support structure, and the adjustment mechanism drives the gas in the support cavity to move towards the outside of the support cavity.

4. The seat according to claim 3, characterized in that Further comprising: A control module, both the sensor and the adjustment mechanism being electrically connected to the control module.

5. The seat according to claim 4, characterized in that, One of the lumbar support structure and the backrest structure forms a first sliding portion, and the other of the lumbar support structure and the backrest structure forms a second sliding portion, and the lumbar support structure and the backrest structure relatively move in cooperation through the first sliding portion and the second sliding portion.

6. The seat according to claim 5, characterized in that, The adjustment mechanism includes a first driving member and a second driving member, the first driving member being connected to the lumbar support structure to drive the lumbar support structure and the backrest structure to relatively move, and the second driving member being connected to the lumbar support structure to drive gas to enter and exit the support cavity.

7. The seat according to claim 4, characterized in that Further comprising: A memory module, the memory module being electrically connected to the control module, the memory module being used for storing the pressure in the support cavity and / or the relative position between the lumbar support structure and the backrest structure when the lumbar support structure is in the first state; and / or, the memory module is used for storing the pressure in the support cavity and / or the relative position between the lumbar support structure and the backrest structure when the lumbar support structure is in the second state.

8. The seat according to claim 1, wherein Further comprising: Chair legs, the base assembly being disposed on the chair legs; An armrest assembly, the armrest assembly being connected to the backrest assembly and located on both sides in the width direction of the base assembly for supporting a user's arms; A leg rest assembly, the leg rest assembly being rotatably connected to the base assembly, the leg rest assembly and the backrest assembly being spaced apart in the front-back direction of the base assembly.

9. A method for adjusting a seat, characterized in that, Applied to the seat according to any one of claims 1-7, the adjustment method includes: Step S1, obtaining the angular change between the backrest assembly and the horizontal plane; Step S2, determining whether the backrest assembly is in the first state and the second state, if the backrest assembly is in the first state, then execute step S3, if the backrest assembly is in the second state, then execute step S4; Step S3, the backrest assembly is in the first state, inflating the support cavity of the lumbar support structure, and at the same time driving the lumbar support structure to move towards the direction close to the backrest structure; Step S4: When the backrest assembly is in the second state, the gas in the support cavity of the lumbar support structure is released, and at the same time, the lumbar support structure is driven to move away from the backrest structure; Step S5: Determine whether the pressure in the support cavity is balanced. If so, stop the operation of the adjustment mechanism; if not, execute Step S1.

10. A control device, characterized in that, The control device includes: a processor and a memory. The memory is adapted to store multiple program codes, and the program codes are adapted to be loaded and run by the processor to execute the adjustment method of the seat according to claim 9.

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