阅读说明：本技术 一种座椅的控制方法、控制装置及座椅 (Control method and control device of seat and seat ) 是由 许宏伟 覃冠豪 唐毅 张恒昱 邓克晚 纪天立 马振方 于 2021-08-26 设计创作，主要内容包括：本发明公开一种座椅的控制方法、控制装置及座椅,所述座椅包括转动安装的靠背、转动安装于所述靠背一侧的桌板、用于驱动所述桌板转动的第一驱动装置及用于感测所述靠背的转动角度的转动检测装置,所述座椅的控制方法包括以下步骤：在所述桌板处于打开状态时,当所述靠背进行转动调节时,获取所述转动检测装置检测的所述靠背的转动角度；根据所述转动角度,获得所述桌板的调整角度；根据所述桌板的调整角度,控制所述第一驱动装置驱动所述桌板转动,使得所述桌板处于预设角度的位置。如此所述座椅能够保持所述桌板始终位于所述预设角度的位置,大大方便了所述座椅的使用。(The invention discloses a control method and a control device of a seat and the seat, wherein the seat comprises a backrest which is rotatably installed, a table plate which is rotatably installed on one side of the backrest, a first driving device which is used for driving the table plate to rotate and a rotation detection device which is used for sensing the rotation angle of the backrest, and the control method of the seat comprises the following steps: when the desk plate is in an open state and the backrest is rotationally adjusted, the rotation angle of the backrest detected by the rotation detection device is acquired; obtaining an adjusting angle of the table plate according to the rotating angle; according to the adjustment angle of the table plate, the first driving device is controlled to drive the table plate to rotate, so that the table plate is located at a preset angle. Therefore, the seat can keep the table plate always positioned at the position of the preset angle, and the seat is greatly convenient to use.)

1. A control method of a seat, the seat including a backrest rotatably mounted, a table rotatably mounted on a side of the backrest, a first driving device for driving the table to rotate, and a rotation detecting device for detecting a rotation angle of the backrest, the control method comprising the steps of:

when the desk plate is in an open state and the backrest is rotationally adjusted, the rotation angle of the backrest detected by the rotation detection device is acquired;

obtaining an adjusting angle of the table plate according to the rotating angle;

according to the adjustment angle of the table plate, the first driving device is controlled to drive the table plate to rotate, so that the table plate is located at a preset angle.

2. The method of controlling a seat according to claim 1, wherein the step of obtaining the adjustment angle of the table based on the rotation angle comprises:

and if the rotation angle is theta, the adjustment angle of the table plate is-theta.

3. The method for controlling the seat as claimed in claim 2, wherein the step of controlling the first driving device to drive the table to rotate according to the adjustment angle of the table, so that the table is at the position of the preset angle, comprises:

calculating a target included angle theta between the adjusted backrest and the table plate according to the adjustment angle theta of the table plate_2＝θ₃- θ, where θ₃Is the angle between the backrest and the table when the backrest and the table are at the reference positions;

comparing the target included angle theta₂A safety preset angle is formed;

when the target included angle theta₂When the angle is smaller than the safe preset angle, controlling the driving device to drive the table plate to rotate, so that the angle between the table plate and the backrest is the safe preset angle;

when the target included angle theta₂When the angle is larger than the safe preset angle, the driving device is controlled to drive the table plate to rotate, so that the angle between the table plate and the backrest is the target included angle theta₂。

4. The control method of the seat according to claim 1, wherein the seat includes a second driving device for driving the backrest to rotate, and the seat further includes a pressure sensor for detecting a pressure applied to the backrest or the table;

when the table is in an open state and the backrest is rotationally adjusted, the step of obtaining the rotation angle of the backrest detected by the rotation detection device includes:

when the table plate is in an open state, in the process of carrying out rotation adjustment on the backrest, obtaining a pressure value measured by the pressure sensor;

and when the pressure value is greater than a preset pressure value, controlling the second driving device to stop driving the backrest to rotate.

5. The control method of the seat according to claim 1, wherein the seat includes a second driving device for driving the backrest to rotate, and the seat further includes a pressure sensor for detecting a pressure applied to the backrest or the table;

according to the adjustment angle of the table plate, controlling the first driving device to drive the table plate to rotate, so that the table plate is located at a preset angle position, wherein the step comprises the following steps of:

in the rotation process of the table plate, obtaining a pressure value measured by the pressure sensor;

when the pressure value is larger than a preset pressure value, controlling the first driving device to stop driving the table plate to rotate;

when the pressure value is smaller than the preset pressure value, the first driving device is controlled to drive the table plate to rotate, so that the table plate is located at the position of a preset angle.

6. The control method of a seat according to claim 1, wherein the preset angle is 85 degrees to 95 degrees; and/or the presence of a gas in the gas,

the preset angle is 90 degrees.

7. A control device of a seat, characterized by comprising a memory, a processor, and a control program of the seat stored on the memory and executable on the processor, the control program of the seat being configured to implement the steps of the control method of the seat according to any one of claims 1 to 6.

8. A seat, comprising:

the seat body comprises a backrest which is rotatably arranged;

the desk plate is rotatably arranged on one side of the backrest;

the first driving device is arranged on the seat main body, is in driving connection with the table plate and is used for driving the table plate to rotate;

a rotation detection device mounted to the seat main body, the rotation detection device being configured to detect a rotation angle of the backrest; and the number of the first and second groups,

a control device electrically connected to the first driving device and the rotation detecting device, respectively, wherein the control device is the control device for the seat as claimed in claim 7.

9. The seat of claim 8, wherein the rotation detection device comprises a hall sensor.

10. The seat of claim 8, further comprising a second drive mechanism for rotating the backrest and a pressure sensor for detecting pressure on the backrest or the table.

Technical Field

The invention relates to the technical field of seats, in particular to a seat control method, a seat control device and a seat.

Background

The seat is an important component of a vehicle, and the comfort and convenience of the seat directly affect the riding experience of passengers. A chair with a table plate is arranged on a vehicle, the table plate is arranged on the back face of a backrest of the chair, and the table plate can be used for a rear passenger to place articles, so that the chair is convenient for a user to use.

The table of current seat generally all can rotate along with the rotation of back for there is certain defect in this kind of seat when using, for example when passenger's adjustment back angle on the seat, the table can lead to the table to take place the slope along with the back is together rotated, thereby makes the article on the table damage that drops, so that can't satisfy user's user demand.

Disclosure of Invention

The invention mainly aims to provide a control method and a control device of a seat and the seat, and aims to solve the problem that a table board can deflect together when the angle of a backrest of a traditional seat is adjusted.

In order to achieve the above object, the present invention provides a method for controlling a seat, the seat including a backrest rotatably mounted, a table rotatably mounted on one side of the backrest, a first driving device for driving the table to rotate, and a rotation detecting device for detecting a rotation angle of the backrest, the method comprising:

when the desk plate is in an open state and the backrest is rotationally adjusted, the rotation angle of the backrest detected by the rotation detection device is acquired;

obtaining an adjusting angle of the table plate according to the rotating angle;

according to the adjustment angle of the table plate, the first driving device is controlled to drive the table plate to rotate, so that the table plate is located at a preset angle.

Optionally, the step of obtaining the adjustment angle of the table according to the rotation angle includes:

and if the rotation angle is theta, the adjustment angle of the table plate is-theta.

Optionally, the step of controlling the first driving device to drive the table to rotate according to the adjustment angle of the table, so that the table is at a position of a preset angle includes:

calculating a target included angle theta between the adjusted backrest and the table plate according to the adjustment angle theta of the table plate_2＝θ₃- θ, where θ₃Is the angle between the backrest and the table when the backrest and the table are at the reference positions;

comparing the target included angle theta₂A safety preset angle is formed;

when the target included angle theta₂When the angle is smaller than the safe preset angle, controlling the driving device to drive the table plate to rotate, so that the angle between the table plate and the backrest is the safe preset angle;

when the target included angle theta₂When the angle is larger than the safe preset angle, the driving device is controlled to drive the table plate to rotate, so that the angle between the table plate and the backrest is the target included angle theta₂。

Optionally, the seat comprises a second driving device for driving the backrest to rotate, and the seat further comprises a pressure sensor for detecting pressure applied to the backrest or the table plate;

when the table is in an open state and the backrest is rotationally adjusted, the step of obtaining the rotation angle of the backrest detected by the rotation detection device includes:

when the table plate is in an open state, in the process of carrying out rotation adjustment on the backrest, obtaining a pressure value measured by the pressure sensor;

and when the pressure value is greater than a preset pressure value, controlling the second driving device to stop driving the backrest to rotate.

Optionally, the seat comprises a second driving device for driving the backrest to rotate, and the seat further comprises a pressure sensor for detecting pressure applied to the backrest or the table plate;

according to the adjustment angle of the table plate, controlling the first driving device to drive the table plate to rotate, so that the table plate is located at a preset angle position, wherein the step comprises the following steps of:

in the rotation process of the table plate, obtaining a pressure value measured by the pressure sensor;

when the pressure value is larger than a preset pressure value, controlling the first driving device to stop driving the table plate to rotate;

when the pressure value is smaller than the preset pressure value, the first driving device is controlled to drive the table plate to rotate, so that the table plate is located at the position of a preset angle.

Optionally, the preset angle is 85 to 95 degrees; and/or the presence of a gas in the gas,

the preset angle is 90 degrees.

The invention also provides a control device of a seat, which comprises a memory, a processor and a control program of the seat, wherein the control program of the seat is stored on the memory and can run on the processor, and the control program of the seat is configured to realize the steps of the control method of the seat.

The invention also proposes a seat comprising:

the seat body comprises a backrest which is rotatably arranged;

the desk plate is rotatably arranged on one side of the backrest;

the first driving device is arranged on the seat main body, is in driving connection with the table plate and is used for driving the table plate to rotate;

a rotation detection device mounted to the seat main body, the rotation detection device being configured to detect a rotation angle of the backrest; and the number of the first and second groups,

the control device is electrically connected with the first driving device and the rotation detection device respectively, and the control device is the control device of the seat.

Optionally, the rotation detection means comprises a hall sensor.

Optionally, the seat further includes a second driving device for driving the backrest to rotate, and a pressure sensor for detecting a pressure applied to the backrest or the table.

In the technical scheme of the invention, the rotation angle of the backrest is sensed by the rotation detection device, and the position of the table plate which can be adjusted to keep the preset angle can be calculated according to the rotation angle, namely the adjustment angle of the table plate is calculated, so that the table plate can be positioned at the preset angle by controlling the first driving device to drive the table plate to rotate according to the adjustment angle of the table plate. So the seat can make the table be located all the time the position of predetermineeing the angle to make the angle skew can not take place for the table, made things convenient for greatly the use of seat.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic front view of a portion of a seat according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a control device of a hardware operating environment according to the embodiment of FIG. 1;

FIG. 3 is a schematic flow chart illustrating an embodiment of a method for controlling a seat according to the present invention;

FIG. 4 is a schematic structural view of a portion of the structure of FIG. 1;

figure 5 is an angled view of the back and the table of the chair of figure 1 in various positions.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Back support	20	Table board
30	First driving device	40	Second driving device
				50	Reference position of backrest	51	Current position of backrest
52	Reference position of table	53	Current position of table
				54	Preset angle	60	Control device for seat

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The seat is an important component of a vehicle, and the comfort and convenience of the seat directly affect the riding experience of passengers. A chair with a table plate is arranged on a vehicle, the table plate is arranged on the back face of a backrest of the chair, and the table plate can be used for a rear passenger to place articles, so that the chair is convenient for a user to use.

The table of current seat generally all can rotate along with the rotation of back for there is certain defect in this kind of seat when using, for example when passenger's adjustment back angle on the seat, the table can lead to the table to take place the slope along with the back is together rotated, thereby makes the article on the table damage that drops, so that can't satisfy user's user demand.

Referring to fig. 1 and 4, the present invention provides a chair, including: the seat comprises a seat body, a table plate 20, a first driving device 30, a rotation detection device and a control device. The seat body comprises a backrest 10 which is rotatably arranged; the table plate 20 is rotatably mounted on one side of the backrest 10; the first driving device 30 is mounted on the seat main body, and the first driving device 30 is in driving connection with the table plate 20 and is used for driving the table plate 20 to rotate; the rotation detecting device is mounted on the seat main body, and the rotation detecting device is used for detecting the rotation angle of the backrest 10; the control device is electrically connected to the first driving device 30 and the rotation detecting device, respectively.

In the technical scheme provided by the invention, the rotation detection device senses the rotation angle of the backrest 10, the control device can calculate how the table plate 20 needs to be adjusted in angle to be kept at the preset position according to the rotation angle, and the control device controls the first driving device 30 to drive the table plate 20 to rotate according to the calculation result, so that the table plate 20 is not influenced by the angle of the backrest 10, the table plate 20 can be normally used all the time, and articles on the table plate 20 cannot fall off.

Specifically, the rotation detecting means includes a hall sensor. In the present embodiment, the rotation detecting means senses the angle of rotation of the backrest 10 by being provided with the hall sensor. The hall sensor can also calibrate a specific position as a reference position or a preset position of the backrest 10 and provide the reference for the control device.

Specifically, the seat further includes a second driving device 40 for driving the backrest 10 to rotate, and a pressure sensor for detecting a pressure applied to the backrest 10 or the table 20. In the present embodiment, the first driving device 30 and the second driving device 40 respectively drive the backrest 10 and the table 20 to rotate by motors, but it should be noted that the first driving device 30 and the second driving device 40 may also respectively drive the table 20 and the backrest 10 to rotate by providing a revolving cylinder, and the first driving device 30 may only drive the table 20 to rotate and the second driving device 40 may only drive the backrest 10 to rotate, but not necessarily by a motor.

When the table 20 or the backrest 10 is adjusted in angle, the articles on the table 20 may be pressed and collided by the backrest 10 and the table 20. Therefore, the seat is further provided with the pressure sensor to sense the pressure applied to the backrest 10 or the table 20, so that when an article on the table 20 collides and extrudes with the backrest 10 or the table 20, the pressure sensor senses that the backrest 10 or the table 20 is subjected to abnormal pressure, and information is fed back to the control device to react in time, so as to prevent the article on the table 20 from being damaged.

The present invention also provides a control device 60 of a seat, and the control device 60 of a seat may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.

Those skilled in the art will appreciate that the configuration of the control device shown in fig. 2 does not constitute a limitation of the control device and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

As shown in fig. 2, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a control program of the seat.

In the control device 60 of the seat shown in fig. 2, the processor 1001 calls the control program of the seat stored in the memory 1005, and performs the following operations:

when the table plate 20 is in an open state and the backrest 10 is rotationally adjusted, the rotation angle of the backrest 10 detected by the rotation detection device is acquired;

obtaining an adjustment angle of the table plate 20 according to the rotation angle;

according to the adjustment angle of the table 20, the first driving device 30 is controlled to drive the table 20 to rotate, so that the table 20 is at a position of a preset angle 54.

Further, the processor 1001 calls the control program of the seat stored in the memory 1005, and also performs the following operations:

if the rotation angle is θ, the adjustment angle of the table plate 20 is- θ.

Further, the processor 1001 calls the control program of the seat stored in the memory 1005, and also performs the following operations:

calculating a target included angle theta between the adjusted backrest 10 and the table plate 20 according to the adjustment angle-theta of the table plate 20_2＝θ₃- θ, where θ₃Is the angle between the backrest 10 and the table 20 when the backrest 10 and the table 20 are at the reference positions;

comparing the target included angle theta₂A safety preset angle is formed;

when the target included angle theta₂When the angle is smaller than the safe preset angle, controlling the driving device to drive the table plate 20 to rotate, so that the angle between the table plate 20 and the backrest 10 is the safe preset angle;

when the target included angle theta₂When the angle is larger than the preset safety angle, the driving device is controlled to drive the table plate 20 to rotate, so that the angle between the table plate 20 and the backrest 10 is the target included angle theta₂。

Further, the processor 1001 calls the control program of the seat stored in the memory 1005, and also performs the following operations:

when the table plate 20 is in an open state, in the process of rotationally adjusting the backrest 10, obtaining a pressure value measured by the pressure sensor;

and when the pressure value is greater than a preset pressure value, controlling the second driving device 40 to stop driving the backrest 10 to rotate.

Further, the processor 1001 calls the control program of the seat stored in the memory 1005, and also performs the following operations:

obtaining a pressure value measured by the pressure sensor during the rotation of the table plate 20;

when the pressure value is greater than a preset pressure value, controlling the first driving device 30 to stop driving the table plate 20 to rotate;

when the pressure value is smaller than the preset pressure value, controlling the first driving device 30 to drive the table plate 20 to rotate, so that the table plate 20 is at a position of a preset angle 54.

Further, the preset angle 54 is 85 to 95 degrees; and/or the presence of a gas in the gas,

the preset angle 54 is 90 degrees.

In the technical solution of the present invention, the rotation detecting device senses the rotation angle of the backrest 10, and the control device 60 of the seat can calculate how the table 20 should be adjusted to be kept at the position of the preset angle 54 according to the rotation angle, that is, calculate the adjustment angle of the table 20, so that the table 20 can be located at the position of the preset angle 54 by controlling the first driving device 30 to drive the table 20 to rotate according to the adjustment angle of the table 20. Therefore, the seat can enable the table plate 20 to be always located at the position of the preset angle 54, so that the table plate 20 cannot deviate in angle, and the use of the seat is greatly facilitated.

Based on the above hardware structure, the present invention provides a control method of a seat, in which the rotation detection device obtains a rotation angle of the backrest 10, and obtains an adjustment angle of the table 20 through the rotation angle, and then the first driving device 30 is controlled to drive the table 20 to rotate to the position of the preset angle 54.

Referring to fig. 3 and 5, fig. 3 is a schematic flow chart of an embodiment of the seat provided in the present embodiment.

S10: when the table plate 20 is in an open state and the backrest 10 is rotationally adjusted, the rotation angle of the backrest 10 detected by the rotation detection device is acquired;

s20: obtaining an adjustment angle of the table plate 20 according to the rotation angle;

s30: according to the adjustment angle of the table 20, the first driving device 30 is controlled to drive the table 20 to rotate, so that the table 20 is at a position of a preset angle 54.

In this embodiment, the preset angle 54 is an included angle between the table plate 20 and a vertical plane, the table plate 20 is located, and the table plate can be normally used when the angle 54 is preset, and the preset angle 54 can be adjusted according to the use requirement. Through the rotation detection device sensing back 10 the turned angle, turned angle can audio-visually react back 10 is relative table 20's motion, and according to turned angle can calculate how table 20 should adjust just can keep predetermineeing the position of angle 54, just calculates table 20's angle of adjustment, so according to table 20's angle of adjustment, control first drive arrangement 30 drive table 20 rotates and just can make table 20 is in predetermine the position of angle 54. Therefore, the seat can enable the table plate 20 to be always located at the position of the preset angle 54, so that the table plate 20 cannot deviate in angle, and the use of the seat is greatly facilitated.

When the backrest 10 is adjusted to different angles, the adjustment angle of the table 20 is changed accordingly, and in order to accurately calculate the adjustment angle of the table 20, in this embodiment, the step S20 includes:

s21: if the rotation angle is θ, the adjustment angle of the table plate 20 is- θ.

In this embodiment, the rotation angle of the backrest 10 is set as θ, and the table 20 needs to rotate in the opposite direction by the same angle to keep the angle of the table 20 at the predetermined angle 54. Thus, although the backrest 10 is deviated from the corresponding reference position, the table 20 is not angularly deflected, that is, the table 20 is not affected by the angle of the backrest 10 and can be used normally.

Referring to fig. 5, when the table 20 is adjusted in angle, it may happen that the angle between the table 20 and the backrest 10 is too small, so that the articles on the table 20 are damaged by being squeezed, in this embodiment, the step S30 includes:

s311: calculating a target included angle theta between the adjusted backrest 10 and the table plate 20 according to the adjustment angle of the table plate 20_2＝θ₃- θ, where θ₃Is the angle between the backrest 10 and the table 20 when the backrest 10 and the table 20 are at the reference positions;

s312: comparing the target included angle theta₂A safety preset angle is formed;

s313: when the target included angle theta₂When the angle is smaller than the safety preset angle, controlling the first driving device 30 to drive the table plate 20 to rotate, so that the angle between the table plate 20 and the backrest 10 is the safety preset angle;

s314: when the target included angle theta₂Is greater thanWhen the safe preset angle is obtained, the first driving device 30 is controlled to drive the table plate 20 to rotate, so that the angle between the table plate 20 and the backrest 10 is the target included angle theta₂。

In the present embodiment, when the backrest 10 and the table 20 are at the reference position, an angle between the backrest 10 and the table 20 is θ₃And the adjustment angle of the table plate 20 is-theta, so that theta₃θ is equal to the angle between the table plate 20 and the backrest 10 after the angle adjustment, i.e. the target angle. When the included angle between the table 20 and the backrest 10 is too small, the objects on the table 20 may be squeezed, and therefore a safety preset angle is further provided between the table 20 and the backrest 10. By comparing the target included angle with the safety preset angle, when the target included angle is smaller than the safety preset angle, it indicates that the article on the table 20 may be squeezed due to the angle adjustment of the table 20, and therefore the first driving device 30 stops when the table 20 is driven to rotate to the angle between the table 20 and the backrest 10, which is the safety preset angle, so as to prevent the article on the table 20 from being damaged due to squeezing; when the target included angle is greater than the preset safety angle, it indicates that the angle adjustment of the table 20 does not cause the objects on the table 20 to be squeezed, so that the first driving device 30 can normally drive the table 20 to rotate to the angle between the backrest 10, which is the target included angle.

When the table 20 is used, some high objects may be placed on the table 20, which may cause the objects on the table 20 to be pressed against the backrest 10 when the table 20 rotates, in this embodiment, the step S10 further includes:

s11: when the table plate 20 is in an open state, in the process of rotationally adjusting the backrest 10, obtaining a pressure value measured by the pressure sensor;

s12: and when the pressure value is greater than a preset pressure value, controlling the second driving device 40 to stop driving the backrest 10 to rotate.

In this embodiment, when the object on the table 20 is pressed against the backrest 10, the pressure value applied to the backrest 10 or the table 20 is generally higher than the preset pressure value. Therefore, in the process of rotationally adjusting the backrest 10, after the control device obtains the real-time pressure value sensed by the pressure sensor, the magnitude relation between the pressure value and the preset pressure value can be compared, and when the pressure value is greater than the preset pressure value, the second driving device 40 is controlled to stop driving the backrest 10. This further prevents items on the table 20 from being crushed as the seat is angled.

In this embodiment, the step S30 further includes:

s321: obtaining a pressure value measured by the pressure sensor during the rotation of the table plate 20;

s322: when the pressure value is greater than a preset pressure value, controlling the first driving device 30 to stop driving the table plate 20 to rotate;

s323: when the pressure value is smaller than the preset pressure value, controlling the first driving device 30 to drive the table plate 20 to rotate, so that the table plate 20 is at a position of a preset angle 54.

In this embodiment, when the object on the table 20 is pressed against the backrest 10, the pressure value applied to the backrest 10 or the table 20 is generally higher than the preset pressure value. Therefore, in the rotation adjustment process of the table 20, after the control device obtains the real-time pressure value sensed by the pressure sensor, the first driving device 30 is controlled to stop driving the table 20 to rotate when the pressure value is greater than the preset pressure value by comparing the magnitude relation between the pressure value and the preset pressure value; when the pressure value is smaller than the preset pressure value, the first driving device 30 is controlled to normally drive the table plate 20 to rotate, so that the table plate 20 is located at a preset angle 54. This further prevents items on the table 20 from being crushed as the seat is angled.

Further, referring to fig. 5, the predetermined angle 54 is 85 to 95 degrees; and/or the preset angle 54 is 90 degrees. In this embodiment, the preset angle 54 is an included angle between the table 20 and a vertical plane, so when the preset angle 54 is 85 degrees to 95 degrees, the table 20 is almost in a horizontal state, at this time, the table 20 is more suitable for placing an object, and the possibility that the object on the table 20 falls is low. Of course, when the preset angle 54 is 90 degrees, the table 20 is in a horizontal state when the table 20 is at the position of the preset angle 54, so that the table is more suitable for placing articles. In practical applications, the preset angle 54 may be adjusted according to usage requirements, and the size of the preset angle 54 may also be adjusted accordingly, which is not limited herein.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.