Seat with sitting posture correction function

By setting up pressure sensors and controllers on the seats and combining the ejection mechanism reminder function, the problem of poor sitting posture caused by students' long-term sitting posture is solved, and the sitting posture correction and health improvement are achieved.

CN222425676UActive Publication Date: 2025-02-07SHANGHAI VEI SHENG AUTO PARTS MFG CO LTD +1
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Patent Information

Application Number
CN202420299622.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-19
Publication Date
2025-02-07
Estimated Expiration
2034-02-19

AI Technical Summary

Technical Problem

Students are prone to poor sitting postures when sitting for a long time, resulting in hunchback, spinal pain and vision problems.

Method used

Design a seat, by setting a first pressure sensor and controller under the seat plate, detecting the pressure value of the student's legs to the seat, determining whether the sitting posture is inclined, and reminding the student to adjust the sitting posture through the ejection mechanism to make it more straight.

Benefits of technology

Effectively correct students' sitting posture, reduce the occurrence of sitting posture incline and hunchback, and improve students' sitting posture health.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a seat with a sitting posture correcting function, which comprises a seat body, the seat body comprises a seat plate, a backrest arranged above the seat plate and a supporting leg frame arranged below the seat plate, and the seat is characterized by further comprising a first pressure sensor, a controller arranged below the seat plate and two ejection mechanisms, the number of the first pressure sensors is two, the two first pressure sensors are arranged at the positions, corresponding to the two legs, of the front side of the seat plate correspondingly and used for detecting first pressure values of the legs after a human body sits on the seat plate and transmitting the first pressure values to the controller, the ejection mechanisms are arranged at the positions, corresponding to the two thighs, of the seat plate correspondingly, and through holes are formed in the seat plate. The controller is electrically connected with the ejection mechanisms, and the controller controls the corresponding ejection mechanism to stretch out and reset relative to the seat plate through the through hole according to the first pressure value, so that whether the sitting posture of the student is inclined or not can be judged, and the student is reminded through touch of the ejection mechanisms, so that the student develops a good sitting posture habit.
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Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a seat with a sitting posture correction function. Background Art

[0002] Bad sitting posture can cause diseases such as hunchback or spinal pain. Hunchback is a common spinal deformity, which is a morphological change caused by thoracic kyphosis. The main clinical manifestations of spinal pain are pain in the neck, chest, back and waist, and even involve lower limb pain, causing great pain to patients.

[0003] In school, students are very dependent on their chairs. They need to sit in their chairs for a long time to listen to lectures, do homework and other activities, which makes it easy for them to have bad sitting posture and overuse their eyes. Especially for adolescents, their bodies are in the development stage and their bones are not yet stable. If they sit in a tilted posture, the body gravity will bend the spine, which will cause hunchbacks in the long run. Incorrect sitting posture will also affect students' eyesight.

[0004] Therefore, the utility model is dedicated to providing a chair with a sitting posture correction function to solve the above-mentioned problem. Utility Model Content

[0005] The purpose of the utility model is to provide a chair with a sitting posture correction function, which obtains first pressure values ​​of the student's two legs relative to the seat plate by respectively arranging two first pressure sensors at the positions of the seat plate relative to the user's legs, and judges whether the student's sitting posture is tilted according to the two groups of first pressure values, and contacts the student through an ejection mechanism to remind the student, so as to make the student's sitting posture more straight and reduce the occurrence of sitting posture tilt and the like.

[0006] The technical solution provided by the utility model is as follows:

[0007] A chair with a sitting posture correction function, the seat body comprising a seat plate, a backrest arranged above the seat plate and a leg support arranged below the seat plate, characterized in that it also comprises a first pressure sensor, a controller arranged below the seat plate and two ejection mechanisms;

[0008] The first pressure sensors are provided in two numbers, and the two first pressure sensors are respectively arranged at the positions corresponding to the two thighs on the front side of the seat plate, so as to detect the first pressure value of the legs of the human body after the human body sits down, and transmit the first pressure value to the controller;

[0009] The ejection mechanisms are respectively arranged at positions of the seat plate corresponding to the two legs, the seat plate is provided with through holes, and the controller is electrically connected to the ejection mechanisms;

[0010] Wherein, the controller controls a corresponding one of the ejection mechanisms to extend and reset relative to the seat plate through the through hole according to the first pressure value.

[0011] In some embodiments, the upper surface of the seat plate is provided with two arc-shaped grooves cooperating with the legs, and one end of the arc-shaped groove is opened on the side of the seat plate and communicates with the outside;

[0012] The first pressure sensors are respectively arranged in the two arc-shaped grooves.

[0013] In some embodiments, a smart light electrically connected to the controller is also included, wherein the smart light is vertically arranged on the seat body, and the smart light has a display panel and a buzzer, and the display panel is used to display different colors according to the first pressure value received by the controller.

[0014] In some embodiments, a second pressure sensor is further included, the second pressure sensor being disposed on the backrest to detect a second pressure value of the back of a person sitting down, and transmitting the second pressure value to the controller;

[0015] The controller controls the two ejection mechanisms to extend and reset relative to the seat plate through the through holes according to the second pressure value.

[0016] In some embodiments, a distance sensor and a temperature sensor are further included, wherein the distance sensor is disposed on the backrest to measure the distance data between the back of a human body and the backrest, and transmit the distance data to the controller, and the controller controls the buzzer to sound according to the distance data;

[0017] The temperature sensor is arranged on the seat plate to measure the temperature data of the human body and is suitable for displaying it through the display panel.

[0018] In some embodiments, the ejection mechanism includes a housing, a first cylinder, an elastic member, and a push block disposed at one end of the elastic member, the housing being disposed below the seat plate and corresponding to the through hole;

[0019] The first cylinder is disposed in the housing, and one end of the elastic member away from the push block is connected to the output end of the first cylinder.

[0020] In some embodiments, a waist supporting mechanism is further included, the waist supporting mechanism includes a waist protection plate, a mounting cover, a locking assembly and a telescopic assembly, the backrest is provided with a mounting groove arranged along the length direction of the backrest, the mounting groove runs through the backrest, and the mounting cover is movably arranged in the mounting groove;

[0021] The telescopic assembly includes a connecting rod and a second cylinder arranged at one end of the connecting rod, the second cylinder is arranged in the mounting cover, and the waist guard plate is arranged in front of the backrest and connected to the connecting rod;

[0022] The locking assembly includes a threaded rod and a wrench arranged at one end of the threaded rod. One side of the backrest is provided with a plurality of threaded holes connected to the mounting groove. One end of the threaded rod is rotatably arranged in the mounting groove through the threaded holes and is suitable for snap-fitting with the mounting cover to fix the mounting cover in the mounting groove.

[0023] In some embodiments, a side of the waist protection plate away from the connecting rod is provided with an inner groove that fits against the back waist, and an inflatable airbag is provided in the inner groove.

[0024] In some embodiments, the leg support is configured as a retractable rod that can adjust the height of the seat plate relative to the ground.

[0025] In some embodiments, a foot pad is provided at one end of the leg support away from the seat plate.

[0026] The chair with a sitting posture correction function provided by the utility model has the following beneficial effects:

[0027] 1. The utility model provides a chair with a sitting posture correction function. When a user sits on the chair, two first pressure sensors can respectively detect the first pressure values ​​of the user's two legs on the seat plate, and the controller can determine whether the student's sitting posture is tilted according to the first pressure values. When the student's sitting posture is tilted, the controller can control the corresponding ejection mechanism to pass through the through hole on the seat plate to touch the student to remind him, so that the student can find his own sitting posture problems in time and make corresponding adjustments to achieve the purpose of sitting posture correction.

[0028] 2. The utility model provides a chair with a sitting posture correction function. An arc-shaped groove is arranged in the upper surface of the seat plate. When the user sits on the seat plate, the legs can be located in the arc-shaped groove, which can restrict the movement of the students' legs and make it difficult to cross the thighs in the forward and reverse directions. This solves the problem that people like to cross their legs, which causes the leg muscles to be compressed and easily numb, and the problem that long-term crossing of legs causes the spine to deviate to one side, forming scoliosis.

[0029] 3. The utility model provides a chair with a sitting posture correction function. The display panel of the smart light can also display different colors according to different pressures, and can send out an alarm to the outside world in time to remind teachers or parents to manage students' sitting postures.

[0030] 4. The utility model provides a chair with a sitting posture correction function. The second cylinder can push the lumbar guard to move in the direction away from the backrest, so that the lumbar guard fits the student's waist, thereby making the student's waist in a straight state, so as to reduce the possibility of students bending over and hunching over. Moreover, the mounting cover can be fixed at any position of the mounting groove through the locking assembly, which can be suitable for students of different age groups and improves versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present solution.

[0032] Figure 1 The utility model discloses a structural diagram of a chair with a sitting posture correction function.

[0033] Description of Figure Numbers:

[0034] Seat body 1 , backrest 11 , seat plate 12 , leg support 13 , first pressure sensor 14 , ejection mechanism 15 , second pressure sensor 16 , distance sensor 17 , temperature sensor 18 , armrest 19 . DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0036] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0037] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] In this embodiment, a chair with a sitting posture correction function is described, in which a first pressure sensor 14 is provided on the chair body 1 to detect a first pressure value of a student sitting on the chair body 1. The controller controls the ejection mechanism 15 to contact the student to remind the student according to the size of the first pressure value, thereby achieving the purpose of sitting posture correction, and solving the problem that the existing chairs do not have the function of correcting students' sitting posture.

[0040] A seat with a posture correction function includes a seat body 1, which includes a seat plate 12, a backrest 11 and a leg support 13, wherein the backrest 11 is arranged above the seat plate 12, and the leg support 13 is arranged below the seat plate 12. Correspondingly, the seat with a posture correction function also includes a first pressure sensor 14, an ejection mechanism 15 and a controller, and the ejection mechanism 15 and the controller are arranged below the seat plate 12. A through hole is arranged on the seat plate 12, and two ejection mechanisms 15 are arranged. The two ejection mechanisms 15 are arranged at positions of the seat plate 12 corresponding to two thighs and are arranged one by one with the through holes, and the ejection mechanisms 15 can extend and reset relative to the seat plate 12 through the through holes, so that each ejection mechanism 15 can contact and remind the corresponding thigh.

[0041] Two first pressure sensors 14 are provided, and the two first pressure sensors 14 are provided on the seat plate 12 and are located at the front side of the seat plate 12 corresponding to the position of the student's legs. When the student sits on the chair body 1, the two legs of the student can contact the two first pressure sensors 14 respectively, and the two first pressure sensors 14 can respectively detect the first pressure value of the two legs on the seat plate 14 after the human body sits down, and transmit the first pressure value to the controller. Accordingly, the controller is electrically connected to the ejection mechanism 15, and can control the corresponding ejection mechanism 15 to move through the through hole for telescopic movement according to the magnitude of the first pressure value.

[0042] In the prior art, most of the students' seats are not equipped with a correction function, or only a pressure sensor is set on the seat. The student's sitting posture is obtained through the pressure sensor, but the accurate sitting posture cannot be obtained, resulting in poor posture correction effect. In actual applications, when students sit on the seat, they often sit in a tilted posture, cross their legs, etc. At this time, the two first pressure sensors 14 can detect that the first pressure values ​​of the two legs on the seat plate 12 are different. The controller can determine that the student's sitting posture is tilted, and control a corresponding ejection mechanism 15 to extend relative to the seat plate 12, so that the ejection mechanism 15 contacts one of the student's legs, reminding the student so that the student can timely detect and adjust his or her incorrect sitting posture, reduce the occurrence of sitting posture tilt, maintain the user's sitting posture health, and make the use effect more significant.

[0043] It should be pointed out that the controller can control the two ejection mechanisms 15 to move separately. When the student leans to the left, the controller controls the ejection mechanism 15 on the left to contact the student's left leg, so that the student can understand that the body is leaning to the left. Correspondingly, when the student leans to the right, the controller controls the ejection mechanism 15 on the right to contact the student's right leg, so that the student can understand that the body is leaning to the right. This can provide a judgment basis for the student's sitting posture correction, especially when the student has some slight sitting posture tilt, the controller can accurately remind the student to improve the effect of sitting posture correction.

[0044] In one embodiment, referring to the accompanying drawings, Figure 1 , this embodiment further describes the seat plate 12. Specifically, the seat plate 12 is provided with an arc-shaped groove, and two arc-shaped grooves are provided. The two arc-shaped grooves are arranged in parallel and are suitable for matching with the legs of the students. One end of the arc-shaped groove is opened on the side of the seat plate 12 and is connected to the external environment. It should be pointed out that the two first pressure sensors 14 are respectively arranged in the two arc-shaped grooves. When the student sits on the seat plate 12, the two legs are respectively located in the two arc-shaped grooves.

[0045] It can be understood that the setting of the arc-shaped groove increases the difficulty of crossing the legs of students. In conjunction with the first pressure sensor 14, it solves the problem that people like to cross their legs, which causes the leg muscles to be compressed and easily numb, and the problem that long-term crossing of legs causes the spine to lean to one side and forms scoliosis, further improving the effect of the chair in correcting sitting posture.

[0046] In one implementation, this embodiment further describes a chair with a posture correction function, and further includes a smart light, which is electrically connected to the controller. The smart light is vertically arranged on the seat body 1, and the smart light has a display panel and a buzzer, and the display panel can display different colors according to the first pressure value received by the controller.

[0047] In this embodiment, the setting of the smart light enables the chair to not only remind students of their sitting posture, but also the external environment. For example, when the teacher sees the color display on the display panel for a long time, he can know that the student has been in a bad sitting posture for a long time, and then remind the student in time to ensure the sitting posture correction effect.

[0048] Preferably, the display panel can set different colors to correspond to first pressure values ​​of different sizes, and can express the degree of bad sitting posture through different color displays, thereby providing teachers with accurate student sitting posture information.

[0049] Of course, two armrests 19 can also be provided on the seat plate 12 , and the smart lamp can be vertically arranged on the armrests 19 .

[0050] Furthermore, the chair with sitting posture correction function also includes a second pressure sensor 16, wherein the second pressure sensor 16 is arranged on the backrest 11, for detecting a second pressure value of the back of the student sitting on the chair against the backrest 11, and transmitting the corresponding second pressure value to the controller.

[0051] It is understandable that, in addition to common sitting posture problems such as leaning back and crossing legs, students are also prone to leaning their backs against the backrest 11 during classes and homework. Therefore, by providing a second pressure sensor 16 on the backrest 11, when the student leans on the backrest 11, the second pressure sensor 16 can detect the second pressure value, and the controller controls the two ejection mechanisms 15 to extend from the through hole and contact the student's legs to remind the student to adjust his or her sitting posture.

[0052] In this embodiment, different types of reminders are given to students according to their different sitting postures, so that students can promptly understand the specific types of incorrect sitting postures and make corrections in time, thereby ensuring the correction effect of the chair.

[0053] Furthermore, it also includes a distance sensor 17 and a temperature sensor 18. The distance sensor 17 is arranged on the backrest 11 to measure the distance data between the back of the human body and the backrest 11, and transmit the distance data to the controller. The controller can control the buzzer to sound a reminder according to the distance data. The distance data can reflect whether the student's back is tilted forward or backward relative to the backrest 11, providing an accurate basis for the controller to obtain the user's sitting posture.

[0054] Accordingly, the temperature sensor 18 is arranged on the seat plate 12 to measure the temperature data of the human body, and can be displayed through the display panel of the smart light. It is difficult for students to find abnormal body temperature, and they cannot seek medical treatment in time when they have a fever, which aggravates the condition. The setting of the temperature sensor 18 can detect abnormal temperature of students in time.

[0055] In one embodiment, the leg support 13 is configured as a telescopic rod to adjust the height of the seat plate 12 relative to the ground. Specifically, the telescopic rod includes an inner tube, an outer tube and a knob. A knob hole is provided on the outer tube. One end of the outer tube is connected to the seat plate 12, and the outer tube is provided with a receiving space. The inner tube can be arranged in the receiving space of the outer tube, that is, the outer tube is sleeved on the outside of the inner tube, so that the inner tube can slide inside the outer tube. The user adjusts the length of the inner tube in the receiving space of the outer tube according to actual needs, and continuously rotates the knob through the knob hole. One end of the knob gradually penetrates into the outer tube, so that one end of the knob is squeezed and contacted with the inner tube, thereby achieving the purpose of adjusting the height of the seat plate 12 relative to the ground.

[0056] In this embodiment, the length of the leg support frame 13 is adjusted according to the height of the user to match the user, which is more applicable.

[0057] Furthermore, a foot pad is provided at one end of the leg support 13 away from the seat plate 12, which can improve the shock absorption performance of the chair.

[0058] In one embodiment, the chair with a posture correction function further includes a waist support mechanism, which includes a waist protection plate, a mounting cover, a locking assembly and a telescopic assembly. The backrest 11 is provided with a mounting groove matched with the mounting cover, the mounting groove runs through the backrest 11 and is arranged along the length direction of the backrest 11, and the mounting cover is movably arranged in the mounting groove.

[0059] Correspondingly, the telescopic assembly includes a connecting rod and a second cylinder, the second cylinder is arranged at one end of the connecting rod, the second cylinder is arranged in the mounting cover, the lumbar guard is arranged in front of the backrest 11 and connected to the connecting rod, and the second cylinder is used to drive the connecting rod to move forward and backward, thereby driving the lumbar guard to move forward and backward relative to the backrest 11. The locking assembly includes a threaded rod and a wrench, and the wrench is arranged at one end of the threaded rod. One side of the backrest 11 is provided with a plurality of threaded holes connected to the mounting groove, and the threaded rod and the threaded holes are threadedly matched with each other, so that one end of the threaded rod can be rotatably arranged in the mounting groove. When the mounting cover is moved to a suitable position, the threaded rod passes through the corresponding threaded hole and is engaged with the mounting cover, thereby fixing the mounting cover in the mounting groove, thereby adjusting the height of the lumbar guard relative to the seat plate 12.

[0060] An inner groove is arranged at one end of the waist protection plate away from the connecting rod. The inner groove is suitable for fitting with the back waist of the student, and an inflatable air bag is arranged in the inner groove.

[0061] In this embodiment, the lumbar guard can move up and down, forward and backward relative to the backrest 11 to adjust the position of the lumbar guard relative to the student, which not only ensures the correction effect of the chair, but also improves the versatility of the chair.

[0062] Preferably, the controller is electrically connected to the lumbar support mechanism, and the operation of the lumbar support mechanism is controlled by the controller. For example, after the controller determines that the student's sitting posture is tilted forward or backward based on the second pressure sensor 16 and the distance sensor 17, it can control the second cylinder to push the lumbar guard plate to move, so that the student's upper body can be straightened.

[0063] In one embodiment, the ejection mechanism 15 includes a housing, a first cylinder, an elastic member, and a push block disposed at one end of the elastic member. The housing is disposed below the seat plate 12 and is disposed corresponding to the through hole. Accordingly, the first cylinder is disposed in the housing, and one end of the elastic member away from the push block is disposed at the output end of the first cylinder. In this way, the push block is driven to extend and reset relative to the seat plate 12 through the through hole by moving up and down the output end of the first cylinder.

[0064] Of course, in actual production applications, the ejection mechanism 15 can also be set to other structures to achieve the effect of contacting with the student's legs to remind them, which are not explained here one by one and are all within the protection scope of the present utility model.

[0065] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A chair with a sitting posture correction function, comprising a seat body, wherein the seat body comprises a seat plate, a backrest arranged above the seat plate, and a leg support arranged below the seat plate, characterized in that: It also includes a first pressure sensor, a controller and two ejection mechanisms arranged below the seat plate; The first pressure sensors are provided in two numbers, and the two first pressure sensors are respectively arranged at the positions corresponding to the two thighs on the front side of the seat plate, so as to detect the first pressure value of the legs of the human body after the human body sits down, and transmit the first pressure value to the controller; The ejection mechanisms are respectively arranged at positions of the seat plate corresponding to the two legs, the seat plate is provided with through holes, and the controller is electrically connected to the ejection mechanisms; Wherein, the controller controls a corresponding one of the ejection mechanisms to extend and reset relative to the seat plate through the through hole according to the first pressure value.

2. A chair with a sitting posture correction function according to claim 1, characterized in that: The upper surface of the seat plate is provided with two arc-shaped grooves matching with the legs, one end of the arc-shaped groove is opened on the side of the seat plate and communicates with the outside; The first pressure sensors are respectively arranged in the two arc-shaped grooves.

3. The chair with sitting posture correction function according to claim 2, characterized in that: It also includes a smart light electrically connected to the controller, the smart light is vertically arranged on the seat body, the smart light has a display panel and a buzzer, and the display panel is used to display different colors according to the first pressure value received by the controller.

4. The chair with sitting posture correction function according to claim 3, characterized in that: It also includes a second pressure sensor, which is arranged on the backrest to detect a second pressure value of the back of a human body after sitting down, and transmits the second pressure value to the controller; The controller controls the two ejection mechanisms to extend and reset relative to the seat plate through the through holes according to the second pressure value.

5. The chair with sitting posture correction function according to claim 4, characterized in that: It also includes a distance sensor and a temperature sensor, wherein the distance sensor is arranged on the backrest to measure the distance data between the back of the human body and the backrest, and transmit the distance data to the controller, and the controller controls the buzzer to sound according to the distance data; The temperature sensor is arranged on the seat plate to measure the temperature data of the human body and is suitable for displaying it through the display panel.

6. A chair with a sitting posture correction function according to any one of claims 1 to 5, characterized in that: The ejection mechanism comprises a housing, a first cylinder, an elastic member and a push block arranged at one end of the elastic member, the housing is arranged below the seat plate and is arranged corresponding to the through hole; The first cylinder is disposed in the housing, and one end of the elastic member away from the push block is connected to the output end of the first cylinder.

7. The chair with sitting posture correction function according to claim 6, characterized in that: It also includes a waist supporting mechanism, which includes a waist protection plate, a mounting cover, a locking assembly and a telescopic assembly. The backrest is provided with a mounting groove arranged along the length direction of the backrest, the mounting groove runs through the backrest, and the mounting cover is movably arranged in the mounting groove; The telescopic assembly includes a connecting rod and a second cylinder arranged at one end of the connecting rod, the second cylinder is arranged in the mounting cover, and the waist guard plate is arranged in front of the backrest and connected to the connecting rod; The locking assembly includes a threaded rod and a wrench arranged at one end of the threaded rod. One side of the backrest is provided with a plurality of threaded holes connected to the mounting groove. One end of the threaded rod is rotatably arranged in the mounting groove through the threaded holes and is suitable for snap-fitting with the mounting cover to fix the mounting cover in the mounting groove.

8. The chair with sitting posture correction function according to claim 7, characterized in that: The side of the waist protection plate away from the connecting rod is arranged as an inner groove which is in contact with the back waist, and an inflatable air bag is arranged in the inner groove.

9. The chair with sitting posture correction function according to claim 8, characterized in that: The leg support frame is configured as a retractable rod, which can adjust the height of the seat plate relative to the ground.

10. The chair with sitting posture correction function according to claim 9, characterized in that: A foot pad is arranged at one end of the leg support away from the seat plate.