Seat adjusting method and seat adjusting device

Abstract

The invention relates to the technical field of automobile seats, and provides a seat adjusting method and a seat adjusting device.The seat adjusting device comprises a seat back frame, a containing cavity is formed in the inner side of the seat back frame, a back plate provided with a plurality of mounting holes is fixedly connected to the interior of the containing cavity, and a supporting and shaping mechanism is arranged on each mounting hole. Under pushing of the back, the waist, the head and the neck of the driver, the supporting and shaping mechanisms can be structurally adjusted according to the curve of the back of the driver, so that the multiple supporting and shaping mechanisms can be distributed according to a certain curve and can just adapt to supporting of the back, the waist, the head and the neck of the driver. A plurality of supporting and shaping mechanisms are arranged in the rear operation cavity, a backrest cushion is jointly connected among the supporting and shaping mechanisms, an inflation assembly is arranged at the bottom of the rear operation cavity, the interior of the rear operation cavity can be blown through the inflation assembly, then the interior of the backrest cushion can be inflated through the supporting and shaping mechanisms, an air bag pipe is inflated and swelled, and a comfortable backrest is provided for a driver.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile seats, and in particular to a seat adjustment method and a seat adjustment device. Background Art

[0002] Due to differences in driver body shape and sitting posture, drivers have different requirements for seat position and backrest angle, so seat adjustment is necessary. For car drivers in particular, the distance between the seat and the pedals has a significant impact on the driving experience. To ensure driving safety and reduce driving fatigue, the appropriate seat position and backrest angle need to be adjusted.

[0003] In the prior art, there are two main types of seat adjustment methods: manual and electric. Both methods require the user to manipulate different handles or electric switches to control the forward and backward movement of the seat and the forward and backward tilting of the backrest, respectively.

[0004] In order to change the situation of manually adjusting seats, Chinese invention patent CN104260647A discloses an intelligently adjustable car electric seat, including a translation motor, an angle adjustment motor, a backrest pressure sensor, a seat cushion forward movement pressure sensor, a seat cushion backward movement pressure sensor, a controller and a timer; when in use, the user needs to first turn on the automatic adjustment mode, and then sit on the seat, and the car electric seat can be used intelligently and automatically; when the user completes the seat adjustment, the automatic adjustment mode must be turned off before driving the vehicle. Among them, the operation process of the seat back is as follows: when the backrest pressure sensor detects that the rotational pressure applied to the backrest is greater than the set value, the controller sends an unlocking instruction to the backrest lock, and the lock pin of the backrest lock is separated from the lock hole of the seat back, allowing the seat back to be in a free state of forward and backward rotation; when the backrest pressure sensor detects that the rotational pressure applied to the backrest is greater than the set value, and the rotational pressure continues to increase within the set time, the backrest pressure sensor sends a signal to the controller that the backrest rotates backward. After the controller receives the signal of the backrest rotating backward from the backrest pressure sensor, the controller immediately sends a working instruction to the backward rotation relay, and the backward rotation relay starts to work immediately. As a result of the operation of the backward rotation relay, the angle adjustment motor rotates in the opposite direction, and the seat back rotates backward under the action of the reverse rotation of the adjustment motor; when the controller receives the rotational pressure from the backrest pressure sensor that is greater than the set value, and the rotational pressure does not change within the set time, the controller sends a locking instruction to the backrest lock, The backrest lock locks the seat back to prevent it from rotating; when the backrest pressure sensor detects that the rotational pressure applied to the backrest is greater than the set value, and the rotational pressure is decreasing within the set time, the backrest pressure sensor sends a signal to the controller that the backrest rotates forward. After the controller receives the signal from the backrest pressure sensor that the backrest rotates forward, the controller immediately sends a working instruction to the forward rotation relay, and the forward rotation relay starts to work immediately. As a result of the operation of the forward rotation relay, the angle adjustment motor rotates forward, and the seat back rotates forward under the action of the forward rotation of the adjustment motor; the translation operation process of the seat cushion is as follows: when the seat cushion rearward movement pressure sensor detects that the rearward horizontal pressure applied to the seat cushion is greater than the set value, or when the seat cushion forward movement pressure sensor detects that the forward horizontal pressure applied to the seat cushion is greater than the set value, the controller sends an unlocking instruction to the seat cushion lock, and the lock pin of the seat cushion lock separates from the lock hole of the seat cushion, allowing the seat cushion to be in a free state of horizontal movement forward and backward;When the seat cushion rearward pressure sensor detects that the rearward horizontal pressure applied to the seat cushion is greater than the set value, and the rearward horizontal pressure continues to increase within the set time, the seat cushion rearward pressure sensor sends a signal to the controller that the seat cushion moves rearward. After the controller receives the signal from the seat cushion rearward pressure sensor that the seat cushion moves rearward, the controller immediately sends a working instruction to the rear translation relay, and the rear translation relay starts to work immediately. As a result of the operation of the rear translation relay, the translation motor rotates in the opposite direction, and the seat cushion moves rearward horizontally under the action of the reverse rotation of the translation motor; when the controller receives the rearward horizontal pressure from the seat cushion rearward pressure sensor that is equal to the set value, and the rearward horizontal pressure does not change within the set time, or when the controller receives the signal from the seat cushion forward pressure sensor When the forward horizontal pressure equals the set value and the forward horizontal pressure does not change within the set time, the controller sends a locking command to the seat cushion lock, which locks the seat cushion to prevent it from moving horizontally. When the seat cushion forward pressure sensor detects that the forward horizontal pressure applied to the seat cushion is greater than the set value and the forward horizontal pressure continues to increase within the set time, the seat cushion forward pressure sensor sends a signal to the controller to indicate that the seat cushion is moving forward. Upon receiving the signal from the seat cushion forward pressure sensor, the controller immediately sends an operating command to the forward translation relay, which then begins to operate. As a result of the operation of the forward translation relay, the translation motor rotates forward, and the seat cushion moves forward horizontally under the action of the forward rotation of the translation motor.

[0005] The above technical solution can achieve intelligent seat adjustment, but it still has certain shortcomings: although the adjustment of the front and back, up and down, and the angle of the car seat can make the driver have a more comfortable sitting posture while driving, it is well known that in actual vehicle seat use, after long periods of driving, the driver's neck, head, and lower back will suffer fatigue damage due to lack of support or improper support. This is especially serious for people who drive as their main job all year round. The health of the driver is seriously affected. Although there are a large number of products such as lumbar pillows and neck pillows on the market to provide support for drivers, their adaptability is poor, and the installation of multiple pillows on the seat is relatively messy and affects the appearance.

[0006] In view of this, the present invention provides a seat adjustment method and a seat adjustment device. Summary of the Invention

[0007] The present invention provides a seat adjustment method and a seat adjustment device, which solve the problem in the related art that existing automobile seats cannot well support the driver's neck, head and lower back, making the driver prone to fatigue injuries.

[0008] The technical solution of the present invention is as follows: A seat adjustment device comprises: a seat cushion and a seat back frame mounted on the seat cushion, wherein a cavity is defined inside the seat back frame, a back plate is fixed inside the cavity, and the back plate divides the cavity inside the seat back frame into a front buffer cavity and a rear operating cavity;

[0009] A plurality of mounting holes are evenly opened on the back plate, and a supporting shaping mechanism is provided on each of the mounting holes. A backrest pad is commonly connected between the plurality of supporting shaping mechanisms, and the backrest pad is connected to the interior of the rear operating cavity through the supporting shaping mechanism;

[0010] An inflation component is provided at the bottom of the rear operating cavity for blowing air into the rear operating cavity, thereby inflating air into the backrest cushion through the supporting shaping mechanism.

[0011] Preferably, the supporting shaping mechanism includes a fixing tube extending into the inside of the mounting hole, and the fixing tube is fixedly connected to the mounting hole, a top support tube is provided on one side of the fixing tube, a connecting piece is connected between the top support tube and the fixing tube, and a silicone ring is fixed to one end of the top support tube away from the connecting piece.

[0012] Preferably, the connecting member includes a hollow sphere fixedly connected to the end of the supporting tube and a plug-in tube extending to the interior of the fixed tube. The plug-in tube is slidably connected to the fixed tube, and through openings are opened at both ends of the hollow sphere.

[0013] Preferably, a ball groove is provided at one end of the plug-in tube, the hollow sphere is rotatably sleeved inside the ball groove, and the supporting tube and the plug-in tube are connected via the hollow sphere.

[0014] Preferably, a fixing ring is fixed to the inner wall of the plug-in tube, a limit spring is provided between the fixing ring and the hollow sphere, and two ends of the limit spring are fixed to the fixing ring and the hollow sphere respectively.

[0015] Preferably, at least one limiting strip is fixed on the outer wall of the plug-in tube, and at least one limiting groove is opened on the inner wall of the fixed tube. The limiting strip corresponds to the limiting groove one by one and is slidably connected.

[0016] Preferably, a return spring is fixedly connected to one end of the plug-in tube away from the supporting tube, and the other end of the return spring is fixedly connected to the tail end of the fixed tube;

[0017] An electromagnet is embedded in each of the fixing tubes for adsorbing and fixing the plug-in tube, and a plurality of the electromagnets are connected in series via electric wires.

[0018] Preferably, the backrest cushion includes a plurality of independent strip-shaped airbag tubes, which are connected in sequence from top to bottom. An airbag cavity is opened inside the airbag tube, and a connecting hole is opened through the back of the airbag tube. The silicone ring extends into the airbag cavity and is fixed to the connecting hole.

[0019] Preferably, the inflation assembly includes an inflation pump installed at the bottom of the rear operating cavity, an air suction pipe on the inflation pump passes through the rear end wall of the seat back frame, an exhaust pipe on the inflation pump is located inside the rear operating cavity, and an electromagnetic control valve is provided on the exhaust pipe;

[0020] An air release valve is arranged on the top of the seat back frame, a controller is arranged on the seat cushion, and the electromagnet, the air pump, the air release valve and the electromagnetic control valve are all electrically connected to the controller.

[0021] A seat adjustment method, using a seat adjustment device as claimed in any one of the preceding claims, comprises the following steps:

[0022] S2. Initially, the airbag tube is in an empty state, the electromagnet is in a power-off state and does not adsorb and fix the plug tube, and the deflation valve is in an open state;

[0023] S3. Next, the driver sits on the seat cushion, holds the steering wheel, and slowly leans back. At this time, the driver's back, waist, head, and neck push against the support tube through the silicone ring, causing the support tube to drive the connector to slide inside the fixed tube, extending the connector or part of the support tube into the fixed tube, compressing the return spring.

[0024] S3. When the driver adjusts his sitting posture, the controller activates the electromagnet, which is energized to adsorb and fix the plug-in tube inside the fixing tube. At this time, multiple support shaping mechanisms are distributed according to a certain curve, which can precisely adapt to the support of the driver's back, waist, head and neck;

[0025] S4. Afterwards, the air pump is started through the controller, and at the same time, the electromagnetic control valve is opened and the deflation valve is closed. The air pump is used to inflate the interior of the rear operating cavity. The gas is discharged into the interior of the airbag tube through the support shaping mechanism, causing the airbag tube to inflate and swell, providing a comfortable backrest for the driver.

[0026] The working principle and beneficial effects of the present invention are:

[0027] In the present invention, a cavity is defined within the inner side of the seat back frame, and a back panel is fixedly attached to the cavity. The back panel divides the inner cavity of the seat back frame into a front buffer chamber and a rear operating chamber. Multiple mounting holes are evenly distributed throughout the back panel, and each mounting hole is provided with a support shaping mechanism. When the driver sits on the seat cushion and adjusts their sitting posture, the support shaping mechanism can adjust its structure according to the curve of the driver's back under the push of the driver's back, waist, head, and neck. This allows the multiple support shaping mechanisms to be distributed along a specific curve, precisely adapting to the support of the driver's back, waist, head, and neck. Furthermore, a back cushion is commonly connected between the multiple support shaping mechanisms, and the back cushion communicates with the interior of the rear operating chamber through the support shaping mechanism. An inflation component is provided at the bottom of the rear operating cavity, through which air can be blown into the rear operating cavity, and then air can be inflated into the backrest cushion through the supporting shaping mechanism, so that the airbag tube is inflated to provide a comfortable backrest for the driver. The operation is simple and easy to use, and can provide the driver with a comfortable driving style. The structure is simple and the design is ingenious, which provides direction for the excellent configuration of the car and has better application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 A schematic diagram of the three-dimensional structure of a seat adjustment method and a seat adjustment device proposed in the present invention;

[0030] Figure 2 This is a schematic diagram of the inner structure of the chair back frame proposed by the present invention;

[0031] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the back of the chair back frame proposed by the present invention;

[0032] Figure 4 This is a schematic diagram of the assembly structure of the backrest cushion and the support shaping mechanism proposed in the present invention;

[0033] Figure 5 for Figure 4 A in the middle is an enlarged structural diagram;

[0034] Figure 6 This is a schematic diagram of the backrest cushion structure proposed by the present invention;

[0035] Figure 7 This is a schematic diagram of the structural composition of the support shaping mechanism proposed in the present invention;

[0036] Figure 8 This is a partial cross-sectional structural diagram of the support shaping mechanism proposed in the present invention;

[0037] Figure 9This is a schematic diagram of the connector assembly structure proposed by the present invention;

[0038] In the figure: 1. seat cushion; 2. chair back frame; 201. front buffer chamber; 202. rear operating chamber; 3. back cushion; 301. airbag tube; 302. airbag chamber; 303. connecting hole; 4. controller; 5. mounting hole; 6. back plate; 7. inflation assembly; 701. air pump; 702. air suction pipe; 703. exhaust pipe; 704. electromagnetic control valve; 8. support and shaping mechanism; 801. silicone ring; 802. top support pipe; 803. connector; 8031. plug-in tube; 8032. limit strip; 8033. hollow sphere; 8034. through port; 8035. fixing ring; 8036. limit spring; 8037. ball groove; 804. fixing pipe; 8041. limit groove; 805. electromagnet; 806. reset spring; 9. air release valve. DETAILED DESCRIPTION

[0039] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0040] See also Figure 1 、 Figure 2 、 Figure 4 、 Figure 7 、 Figure 8 as well as Figure 9 A seat adjustment method and device includes a seat cushion 1 and a back frame 2 mounted on the seat cushion 1. A cavity is defined within the back frame 2, and a back panel 6 is fixedly attached to the cavity. The back panel 6 divides the cavity within the back frame 2 into a front buffer cavity 201 and a rear operating cavity 202. A plurality of mounting holes 5 are uniformly defined throughout the back panel 6, each of which is provided with a support and shaping mechanism 8.

[0041] Furthermore, the support and shaping mechanism 8 includes a fixed tube 804 extending into the interior of the mounting hole 5 and fixedly connected to the mounting hole 5. A supporting tube 802 is provided on one side of the fixing tube 804. A connector 803 is connected between the supporting tube 802 and the fixing tube 804. A silicone ring 801 is fixedly connected to the end of the supporting tube 802 away from the connector 803, which is used to provide a buffer between the supporting tube 802 and the driver's body. The connector 803 includes a hollow sphere 8033 fixedly connected to the end of the supporting tube 802 and a plug-in tube 8031 ​​extending into the interior of the fixing tube 804. The plug-in tube 8031 ​​is slidably connected to the fixing tube 804, and a through-hole 8034 is formed at both ends of the hollow sphere 8033. A ball groove 8037 is defined at one end of the plug-in tube 8031, and a hollow sphere 8033 is rotatably mounted within the groove. The support tube 802 and the plug-in tube 8031 ​​are connected via the hollow sphere 8033. A fixed ring 8035 is secured to the inner wall of the plug-in tube 8031, with a limit spring 8036 positioned between the ring and the hollow sphere. The ends of the limit spring 8036 are secured to the ring and the hollow sphere, respectively. At least one limit bar 8032 is secured to the outer wall of the plug-in tube 8031, and at least one limit groove 8041 is defined on the inner wall of the fixed tube 804. The limit bar 8032 corresponds to the limit groove 8041 and is slidably connected thereto. A return spring 806 is secured to the end of the plug-in tube 8031 ​​away from the support tube 802, with the other end of the return spring 806 secured to the rear end of the fixed tube 804. Each fixing tube 804 is embedded with an electromagnet 805, which is used to attract and secure the plug-in tube 8031. Multiple electromagnets 805 are connected in series via wires, which are connected to the vehicle's control lines. The electromagnets 805, the air pump 701, the air release valve 9, and the electromagnetic control valve 704 are all electrically connected to the controller 4.

[0042] Specifically, the driver sits on the seat cushion 1 and slowly lies back holding the steering wheel. At this time, under the push of the driver's back, waist, head and neck, the silicone ring 801 will squeeze the support tube 802, so that the support tube 802 drives the connecting part 803 to slide inside the fixed tube 804, and the connecting part 803 or part of the support tube 802 is extended to the inside of the fixed tube 804 to compress the return spring 806. When the driver adjusts his sitting posture, the electromagnet 805 is started through the controller 4, so that the electromagnet 805 is energized to adsorb and fix the plug-in tube 8031 ​​inside the fixed tube 804. At this time, multiple support shaping mechanisms 8 will be distributed according to a certain curve, which can just adapt to the support of the driver's back, waist, head and neck.

[0043] See also Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 as well as Figure 6 The backrest cushion 3 is connected to the plurality of support and shaping mechanisms 8, which communicate with the interior of the rear operating chamber 202 through the support and shaping mechanisms 8. An inflation assembly 7 is provided at the bottom of the rear operating chamber 202 for blowing air into the rear operating chamber 202, thereby inflating the interior of the backrest cushion 3 through the support and shaping mechanisms 8. An air release valve 9 is provided at the top of the chair back frame 2, communicating with the rear operating chamber 202. A controller 4 is provided on the seat cushion 1.

[0044] Furthermore, the backrest cushion 3 includes multiple independent, strip-shaped airbag tubes 301, which are connected sequentially from top to bottom. An airbag cavity 302 is defined within each airbag tube 301, and a communication hole 303 is defined through the back of each airbag tube 301. A silicone ring 801 extends into the airbag cavity 302 and is fixedly connected to the communication hole 303. The inflation assembly 7 includes an air pump 701 mounted at the bottom of the rear operating cavity 202. An air intake pipe 702 of the air pump 701 extends through the rear end wall of the seatback frame 2. An exhaust pipe 703 of the air pump 701 is located within the rear operating cavity 202 and is equipped with an electromagnetic control valve 704.

[0045] Specifically, after the adjustment of the support and shaping mechanism 8 is completed, the air pump 701 is started through the controller 4. At the same time, the electromagnetic control valve 704 is opened and the deflation valve 9 is closed. The air pump 701 is used to inflate the interior of the rear operating chamber 202. The gas is discharged into the interior of the airbag tube 301 through the support and shaping mechanism 8, causing the airbag tube 301 to inflate and provide a comfortable backrest for the driver.

[0046] Working Principle and Usage: During seat adjustment, initially, the airbag tube 301 is deflated, and the electromagnet 805 is de-energized, not adsorbing and securing the plug-in tube 8031. The driver then sits on the seat cushion 1 and slowly leans back, gripping the steering wheel. The pressure from the driver's back, waist, head, and neck compresses the supporting tube 802 through the silicone ring 801, causing it to slide the connector 803 within the fixed tube 804. This extends the connector 803 or a portion of the supporting tube 802 into the fixed tube 804, compressing the return spring 806. When the driver has adjusted their sitting position, the controller 4 activates the electromagnet 805, energizing it and adsorbing and securing the plug-in tube 8031 ​​within the fixed tube 804. At this point, the multiple support and shaping mechanisms 8 are distributed along a specific curve, precisely supporting the driver's back, waist, head, and neck. Next, the air pump 701 is started through the controller 4. At the same time, the electromagnetic control valve 704 is opened and the deflation valve 9 is closed. The air pump 701 is used to inflate the interior of the rear operating chamber 202. The gas is discharged into the airbag tube 301 through the supporting shaping mechanism 8, causing the airbag tube 301 to inflate and provide a comfortable backrest for the driver.

[0047] When the driver needs to swing left and right, the supporting and shaping mechanism 8 located on the side of the body will collide. The supporting and shaping mechanism 8 in this area is subjected to little or no squeezing pressure from the driver's back, waist, head and neck, so that the top support tube 802 is outside the fixed tube 804. When colliding with the driver, the top support tube 802 drives the hollow sphere 8033 to rotate at the end of the fixed tube 804, and the limit spring 8036 is deformed to cooperate with the driver's shaking movement. After losing the squeezing with the driver, the top support tube 802 returns to its original position under the action of the limit spring 8036 and the friction damping generated between the hollow sphere 8033 and the ball groove 8037.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A seat adjustment device comprising: A seat cushion (1) and a chair back frame (2) mounted on the seat cushion (1), characterized in that a cavity is provided on the inner side of the chair back frame (2), a back plate (6) is fixedly connected inside the cavity, and the back plate (6) divides the inner cavity of the chair back frame (2) into a front buffer cavity (201) and a rear operating cavity (202); A plurality of mounting holes (5) are uniformly formed on the back plate (6), a supporting and shaping mechanism (8) is provided on each of the mounting holes (5), a backrest pad (3) is commonly connected between the plurality of supporting and shaping mechanisms (8), and the backrest pad (3) is communicated with the interior of the rear operating cavity (202) via the supporting and shaping mechanism (8); An inflation component (7) is provided at the bottom of the rear operating cavity (202) for blowing air into the interior of the rear operating cavity (202), thereby inflating air into the interior of the backrest cushion (3) through a supporting shaping mechanism (8).

2. A seat adjustment device according to claim 1, characterized in that: The supporting shaping mechanism (8) comprises a fixing tube (804) extending into the interior of the mounting hole (5), and the fixing tube (804) is fixedly connected to the mounting hole (5); a supporting tube (802) is provided on one side of the fixing tube (804); a connecting piece (803) is connected between the supporting tube (802) and the fixing tube (804); and a silicone ring (801) is fixedly connected to one end of the supporting tube (802) away from the connecting piece (803).

3. A seat adjustment device according to claim 2, characterized in that: The connecting member (803) includes a hollow sphere (8033) fixedly connected to the end of the supporting tube (802) and a plug-in tube (8031) extending into the interior of the fixed tube (804). The plug-in tube (8031) is slidably connected to the fixed tube (804), and through openings (8034) are provided at both ends of the hollow sphere (8033).

4. A seat adjustment device according to claim 3, characterized in that: A ball groove (8037) is provided at one end of the plug-in tube (8031), and the hollow sphere (8033) is rotatably sleeved inside the ball groove (8037). The supporting tube (802) and the plug-in tube (8031) are connected via the hollow sphere (8033).

5. The seat adjustment device according to claim 4, characterized in that: A fixing ring (8035) is fixedly connected to the inner wall of the plug-in tube (8031), and a limit spring (8036) is provided between the fixing ring (8035) and the hollow sphere (8033). The two ends of the limit spring (8036) are respectively fixedly connected to the fixing ring (8035) and the hollow sphere (8033).

6. The seat adjustment device according to claim 5, characterized in that: At least one limiting strip (8032) is fixed on the outer wall of the plug-in tube (8031), and at least one limiting groove (8041) is opened on the inner wall of the fixed tube (804). The limiting strip (8032) corresponds to the limiting groove (8041) one by one and is slidably connected.

7. A seat adjustment device according to claim 6, characterized in that: One end of the plug-in tube (8031) away from the supporting tube (802) is fixedly connected to a return spring (806), and the other end of the return spring (806) is fixedly connected to the tail end of the fixed tube (804); An electromagnet (805) is embedded inside each of the fixing tubes (804) for adsorbing and fixing the plug-in tube (8031), and a plurality of the electromagnets (805) are connected in series via electric wires.

8. The seat adjustment device according to claim 7, characterized in that: The backrest cushion (3) comprises a plurality of independent strip-shaped airbag tubes (301), wherein the plurality of airbag tubes (301) are connected in sequence from top to bottom, an airbag cavity (302) is provided inside the airbag tube (301), a connecting hole (303) is provided through the back of the airbag tube (301), and the silicone ring (801) extends into the airbag cavity (302) and is fixedly connected to the connecting hole (303).

9. The seat adjustment device according to claim 8, characterized in that: The inflation assembly (7) includes an inflation pump (701) installed at the bottom of the rear operating chamber (202); an air suction pipe (702) on the inflation pump (701) passes through the rear end wall of the chair back frame (2); an exhaust pipe (703) on the inflation pump (701) is located inside the rear operating chamber (202); and an electromagnetic control valve (704) is provided on the exhaust pipe (703); An air release valve (9) is provided on the top of the chair back frame (2), a controller (4) is provided on the seat cushion (1), and the electromagnet (805), the air pump (701), the air release valve (9), and the electromagnetic control valve (704) are all electrically connected to the controller (4).

10. A seat adjustment method using the seat adjustment device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Initially, the airbag tube (301) is in an empty state, the electromagnet (805) is in a power-off state and does not adsorb and fix the plug tube (8031), and the air release valve (9) is in an open state; S2. Then, the driver sits on the seat cushion (1) and slowly lies back while holding the steering wheel. At this time, the driver's back, waist, head and neck push against the supporting tube (802) through the silicone ring (801), so that the supporting tube (802) drives the connecting piece (803) to slide inside the fixed tube (804), extending the connecting piece (803) or part of the supporting tube (802) into the fixed tube (804), compressing the return spring (806); S3. When the driver adjusts his sitting posture, the controller (4) activates the electromagnet (805), so that the electromagnet (805) is energized to adsorb and fix the plug-in tube (8031) inside the fixing tube (804). At this time, the multiple support shaping mechanisms (8) are distributed according to a certain curve, which can just adapt to the support of the driver's back, waist, head and neck; S4. Afterwards, the air pump (701) is started by the controller (4). At the same time, the electromagnetic control valve (704) is opened and the air release valve (9) is closed. The air pump (701) is used to inflate the interior of the rear operating chamber (202). The gas is discharged into the interior of the airbag tube (301) through the supporting shaping mechanism (8), so that the airbag tube (301) is inflated and expanded, providing a comfortable backrest for the driver.

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