Sitting posture corrector

Abstract

A sitting posture corrector structurally comprises a chest support assembly, a connecting and fixing plate and a rear cover fixing plate, and the connecting and fixing plate is combined with the rear cover fixing plate. The chest support assembly comprises a fixing base, the fixing base comprises a first surface and a second surface which are oppositely arranged, the second surface is adjacent to the side of the connecting fixing plate, the first surface is provided with a containing hole for containing a gasket, and the second surface is provided with a first rotation limiting piece. A second rotation limiting piece is arranged between the second surface and the connecting and fixing plate, and the first rotation limiting piece is meshed with the second rotation limiting piece. A sliding piece is arranged between the connecting fixing plate and the rear cover fixing plate and extends into the containing hole, an elastic piece is arranged between the sliding piece and the gasket, and the gasket and the sliding piece are axially connected to compress the elastic piece between the gasket and the fixing base. The chest support assembly has the advantages that circumferential rotation of the chest support part can be achieved at the original position, the chest support assembly does not need to be pulled out, and therefore more labor is saved.

Description

Technical Field

[0001] The present application relates to the technical field of sitting posture correction tools, and in particular to a sitting posture corrector. Background Art

[0002] A sitting posture corrector is a tool used to correct the body state when writing. In particular, if the writing posture of students is not corrected in time, it may cause certain adverse effects on the body. Currently, the sitting posture correctors on the market generally include two styles: chest support type and chin support type. In particular, the chest support type structure generally includes a chest support part and a base, the base is fixed on the desktop, and the chest support part fits with the chest to achieve correction of the sitting posture. In the chest support sitting posture corrector of the prior art, generally two chest supports are set on the left and right sides, so as to fit with the left and right sides of the chest of the body. Since the chest supports of users of different body shapes need to be adjusted at different angles to achieve a more reasonable fitting angle, a chest support part structure that can be adjusted circumferentially has appeared on the market. However, when the angle of the chest support part needs to be adjusted, the chest support part needs to be pulled a certain distance relative to the base before the angle can be adjusted. Therefore, high force requirements are placed on the user, which increases the difficulty of applying force. Moreover, when it needs to be returned to the original position, it needs to be aligned with the matching part before it can be returned to the original position again, which also increases the difficulty of returning to the original position. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the present application provides a sitting posture corrector which can realize circumferential rotation of the chest support part in the original position without pulling out the chest support assembly and is therefore more convenient to operate.

[0004] In order to solve the above technical problems, the technical solution adopted in the present application is: a sitting posture corrector, whose structure includes a chest support assembly, a connecting and fixing plate and a rear cover fixing plate, the connecting and fixing plate and the rear cover fixing plate are combined with each other; the chest support assembly includes a fixed base, the fixed base includes a first surface and a second surface arranged opposite to each other, the second surface is adjacent to the side of the connecting and fixing plate, the first surface is provided with a accommodating hole for accommodating a gasket, the second surface is provided with a first rotation limiter, a second rotation limiter is provided between the second surface and the connecting and fixing plate, the first rotation limiter and the second rotation limiter are meshed with each other; a sliding member is provided between the connecting and fixing plate and the rear cover fixing plate, the sliding member extends into the accommodating hole and an elastic member is provided between the sliding member and the gasket, the gasket and the sliding member are axially connected to compress the elastic member between the gasket and the fixed base.

[0005] By adopting the above structure, the sitting posture corrector of the present application is provided with a first rotation limiter on the fixed base, and a second rotation limiter is provided between the fixed base and the connecting fixed plate, and the two can mesh with each other; then, an elastic member is provided between the gasket and the fixed base, and the elastic member is compressed to always have a pushing force on the fixed base, so that the first rotation limiter and the second rotation limiter maintain a firm meshing, and when the chest support assembly needs to be rotated circumferentially to adjust the angle, the chest support assembly can be directly rotated, and due to the elastic deformation force of the elastic member, there is no need to pull the chest support assembly, and it can be directly rotated That is, the teeth on the first rotation limiter and the second rotation limiter at the next position are meshed with each other through the pushing force of the elastic member, so that the position is stabilized again; therefore, the sitting posture corrector of the present application does not need to be pulled and shifted, and the circumferential angle can be adjusted and fixed by directly rotating the chest support assembly, and 360-degree circumferential rotation can be achieved to meet the fitting requirements of users with different body shapes, with a wide range of adaptability and more labor-saving operation; and the position can be fixed by rotating to the required angle and then releasing it, without considering the accuracy of the return position, and the operation is more convenient and quick.

[0006] Furthermore, the first rotation limiter and the second rotation limiter are both provided with crown gears that can mesh with each other. With this structure, effective meshing of the two can be achieved. When operating the circumferential rotation of the chest support assembly, only a small rotation force needs to be applied to achieve angle adjustment. The adjustment angle range is larger, more precise adjustment can be achieved, and positioning is also convenient after adjustment.

[0007] Furthermore, a crown gear is provided at one end of the second rotation limiter, and a square portion is provided at the other end, and the square portion is slidably fitted in the square hole of the connecting and fixing plate. With this structure, it can ensure that it is effectively engaged with the first rotation limiter; at the same time, the square portion is fitted in the square hole, and the position of the second limiter can be stabilized to prevent it from rotating circumferentially with the chest support part and affecting the angle adjustment.

[0008] Furthermore, the sliding member includes a square base and a columnar portion extending along the square base; the front end surface of the square base abuts against the back side of the square hole and can slide laterally relative to the square hole, and the columnar portion passes through the square hole into the accommodating hole and is connected to the gasket; adopting the above structure, the chest support assembly can be acted on to make the sliding member move laterally relative to the square hole, thereby adjusting the distance between the two chest support assemblies to adapt to the adaptation effect of users of different shapes.

[0009] Furthermore, the gasket is provided with an axially extending shaft hole, and the columnar portion is sleeved in the shaft hole; adopting this structure, the gasket and the main shaft portion are effectively sleeved together, thereby improving the firmness of the assembly of the two.

[0010] Furthermore, a square groove is provided on the back of the square hole, and the outer contour of the square base is adapted to the inner contour of the square groove; that is, the upper and lower end faces of the square base are fitted with the inner surface of the square groove, so that during the horizontal sliding process of the sliding part relative to the square hole, it can slide more smoothly due to the restriction of the square groove, and no up and down deviation will occur.

[0011] Furthermore, a plurality of grooves are arranged on the back side of the square hole, and a protrusion is arranged on the front end surface of the corresponding square base, and the protrusion is matched with the groove. With this structure, when the sliding member is pushed laterally to slide relative to the square hole, the protrusion can be engaged with the groove at the corresponding position after the lateral adjustment is completed, thereby fixing the lateral position of the sliding member and stabilizing the spacing between the chest support components.

[0012] Furthermore, the multiple grooves are arranged on the upper and lower sides of the square hole and are arranged horizontally, and the corresponding protrusions are arranged on the upper and lower sides of the front end surface of the square base; by adopting this structure, the position of the sliding part can be further stably positioned through the cooperation of the two protrusions and the grooves.

[0013] Furthermore, the front end surface of the crown gear of the second rotation limiting member does not protrude from the front end surface of the connecting and fixing plate; adopting this structure can make the chest support assembly and the connecting and fixing plate fit more closely, reducing the occupied space.

[0014] Furthermore, the first rotation limiter and the fixed base are integrally arranged; that is, the first rotation limiter and the fixed base are integrally formed, which can effectively increase the firmness of the first rotation limiter, form a whole with the chest support assembly, and realize circumferential rotation relative to the second rotation limiter.

[0015] Furthermore, the chest support assembly also includes a silicone sleeve fixing plate and a silicone sleeve, and the silicone sleeve is arranged on the silicone sleeve fixing plate, and the silicone sleeve fixing plate is clamped with the fixed base; with this structure, a complete and independent chest support assembly is formed, and the connection between the fixing plate and the fixed edge of the rear cover is realized through the connection between the gasket and the sliding part. This chest support assembly can not only achieve soft contact with the user's chest, but also facilitate the circumferential rotation of the chest support assembly to adjust the angle, and the lateral sliding to adjust the spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of the first view of the sitting posture corrector of the present application.

[0017] Figure 2 A structural schematic diagram of the second view of the sitting posture corrector of the present application.

[0018] Figure 3 A structural schematic diagram of the first view of the sitting posture corrector assembly of the present application.

[0019] Figure 4 The structural schematic diagram of the second view of the sitting posture corrector assembly of the present application.

[0020] Figure 5 A schematic structural diagram of a cross-sectional view of the sitting posture corrector of the present application.

[0021] Figure 6 A schematic structural diagram of the connection between the chest support assembly of the sitting posture corrector of the present application and the second rotation limiting member.

[0022] Figure 7 A schematic structural diagram of the connection between the chest support assembly of the sitting posture corrector of the present application and the connecting fixing plate.

[0023] Figure 8 Schematic diagram of the structure of the sitting posture corrector of the present application after the chest support component on one side is removed.

[0024] Fig. 9 A schematic diagram of the structure of the sliding member of the present application.

[0025] Fig.10 Schematic diagram of the structure of the fixed base of this application.

[0026] Fig.11 A schematic structural diagram of the second rotation limiter of the present application.

[0027] Fig.12 Schematic diagram of the structure of the gasket of this application.

[0028] As shown in the accompanying drawings: a. chest support assembly, 1. connecting fixing plate, 101. square hole, 102. square groove, 103. groove, 2. back cover fixing plate, 3. fixed base, 301. first surface, 302. second surface, 303. accommodating hole, 304. first rotation limiter, 4. second rotation limiter, 401. square part, 5. sliding part, 501. square base, 502. columnar part, 503. protrusion, 6. gasket, 601. shaft hole, 7. elastic part, 8. silicone sleeve fixing plate, 9. silicone sleeve. DETAILED DESCRIPTION

[0029] The following will combine the embodiments and drawings to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only preferred embodiments, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention;

[0030] It should also be noted that: when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component, fixed through the intermediate component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only; the front and rear ends of this application are the front end when the pen tip is extended in the use state, and the rear end where the pressing part is located. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] As attached Figure 1-12 As shown, a sitting posture corrector of the present application is provided, and its structure includes a chest support component a, a connecting fixing plate 1 and a rear cover fixing plate 2, wherein the connecting fixing plate 1 and the rear cover fixing plate 2 are combined with each other; the chest support component a includes a fixing base 3, and the fixing base 3 includes a first surface 301 and a second surface 302 which are arranged opposite to each other (i.e., the first surface and the second surface which are arranged along the thickness direction of the fixing base, which can also be described as a front end surface close to the user and a rear end surface away from the user), the second surface 302 is adjacent to the connecting fixing plate 1 side, and a receiving hole 303 for accommodating a gasket is provided on the first surface 301 (i.e., a cylinder extending in the thickness direction, and the cylinder is hollow to form a receiving hole), and a first rotation limiter 304 is provided on the second surface 302, and the second surface A second rotation limiter 4 is arranged between the surface 302 and the connecting and fixing plate 1, and the first rotation limiter 304 is meshed with the second rotation limiter 4; a sliding member 5 is arranged between the connecting and fixing plate 1 and the back cover fixing plate 2 (the sliding member can slide in the left and right directions relative to the connecting and fixing plate), the sliding member 5 extends into the accommodating hole 303 and an elastic member 7 is arranged between the gasket 6, and the gasket 6 and the sliding member 5 are axially connected to compress the elastic member 7 between the gasket 6 and the fixed base 3, that is, one end of the elastic member 7 abuts against the radial step surface of the gasket, and the other end abuts against the first surface of the fixed base, and has a thrust force on the fixed base, so that the first rotation limiter on the fixed base is always meshed with the second rotation positioning member.

[0032] By adopting the above structure, the sitting posture corrector of the present application is provided with a first rotation limiter on the fixed base, and a second rotation limiter is provided between the fixed base and the connecting fixed plate, and the two can mesh with each other; then, an elastic member is provided between the gasket and the fixed base, and the elastic member is compressed to always have a pushing force on the fixed base, so that the first rotation limiter and the second rotation limiter maintain a firm meshing, and when the chest support assembly needs to be rotated circumferentially to adjust the angle, the chest support assembly can be directly rotated, and due to the elastic deformation force of the elastic member, there is no need to pull the chest support assembly, and it can be directly rotated That is, the teeth on the first rotation limiter and the second rotation limiter at the next position are meshed with each other through the pushing force of the elastic member, so that the position is stabilized again; therefore, the sitting posture corrector of the present application does not need to be pulled and shifted, and the circumferential angle can be adjusted and fixed by directly rotating the chest support assembly, and 360-degree circumferential rotation can be achieved to meet the fitting requirements of users with different body shapes, with a wide range of adaptability and more labor-saving operation; and the position can be fixed by rotating to the required angle and then releasing it, without considering the accuracy of the return position, and the operation is more convenient and quick.

[0033] As attached Figure 3-6 As shown in 10-11, the first rotation limiter 304 and the second rotation limiter 4 described in the present application are both provided with crown gears (crown gears) that can mesh with each other; the first rotation limiter 304 and the second rotation limiter 4 achieve axial meshing through their respective crown gears; adopting this structure, both can achieve effective meshing, and both only need to apply a smaller rotation force to achieve angle adjustment during the circumferential rotation of the chest support assembly, and the adjustment angle range is larger, such as 360-degree circumferential rotation, to achieve more precise adjustment, and after adjustment, it is also convenient to engage and position again under the pushing action of the elastic member.

[0034] As attached Figure 3-5 As shown in Figures 11, a crown gear is arranged at one end of the second rotation limiter 4 described in the present application, and a square portion 401 is arranged at the other end (one end and the other end in the axial direction), and the square portion 401 is slidably fitted in the square hole 101 of the connecting and fixing plate 1 (that is, the square hole starts in the thickness direction of the connecting and fixing plate, and the upper and lower extension widths of the square hole are adapted to the square portion, so that the square portion can slide back and forth laterally after being placed in the square hole), and the square portion can slide left and right relative to the square hole; adopting this structure, it can ensure that it is effectively engaged with the first rotation limiter; at the same time, the square portion is fitted in the square hole, and the position of the second limiter can be stabilized to prevent it from rotating circumferentially with the chest support portion and affecting the angle adjustment.

[0035] As attached Figure 3-5As shown in Figures 9, the sliding member 5 described in the present application includes a square base 501 and a columnar portion 502 extending along the square base (extending along the thickness direction of the square base); the front end surface of the square base 502 (the surface close to the second rotation limiter side) abuts against the back side of the square hole 101 (a side surface close to the rear cover fixing plate) and can slide laterally relative to the square hole 101, and the columnar portion 502 passes through the square hole 101 to the accommodating hole 303 and is connected to the gasket 6; the above structure can act on the chest support assembly to make the sliding member move laterally relative to the square hole, thereby adjusting the distance between the two chest support assemblies to adapt to the adaptation effect of users of different shapes.

[0036] As attached Figure 5 , 12 As shown, the gasket 6 described in the present application is provided with an axially extending axial hole 601, and the columnar portion 502 is sleeved in the axial hole 601; that is, the outer diameter of the columnar portion is adapted to the inner diameter of the axial hole, and a part of it is sleeved in the axial hole to achieve connection. By adopting this structure, the gasket and the main shaft portion can be effectively fitted together, thereby improving the firmness of the assembly of the two. The gasket is also axially provided with a threaded hole, and the corresponding columnar portion of the sliding member is also axially provided with a threaded hole. The two are screwed with screws or bolts through the threaded holes to achieve axial connection between the gasket and the sliding member. The elastic member is compressed between the gasket and the fixed base, so that the elastic member pushes the fixed base to engage the first rotation limit member with the second rotation limit member.

[0037] As attached Figure 3 , 5 As shown, a square groove 102 is provided on the back of the square hole 101 described in the present application, and the outer contour of the square base 501 is adapted to the inner contour of the square groove 102, so that the square base is interactively fitted in the square groove, and the front end face of the square base is fitted with the bottom wall of the square groove; that is, the upper and lower end faces of the square base are fitted with the inner surface of the square groove, so that during the lateral sliding process of the sliding part relative to the square hole, it can slide more smoothly due to the restriction of the square groove, and there will be no up and down deviation.

[0038] As attached Figure 3 , 7 As shown in Figures 9 and 103, a plurality of grooves 103 are arranged on the back side of the square hole 101 described in the present application (i.e., on the bottom wall of the square groove), and a protrusion 503 is arranged on the front end face of the corresponding square base 501, and the protrusion 503 is adapted to the groove 103; with this structure, in the process of pushing the sliding member laterally to slide relative to the square hole, the protrusion can be engaged with the groove at the corresponding position after the lateral adjustment is completed, thereby fixing the lateral position of the sliding member, and stabilizing the distance between the chest support components during use against the chest support components.

[0039] More specifically, as attached Figure 3 , 7 As shown in Figure 9, the multiple grooves 103 described in the present application are arranged on the upper and lower sides of the square hole 101, and are arranged horizontally (that is, one row is arranged on the upper and lower sides, and 3 grooves are arranged side by side in each row as shown in the accompanying drawings), and the corresponding protrusions 503 are arranged on the upper and lower sides of the front end surface of the square base 501, and are aligned up and down; thereby, the sliding part can be engaged with the groove through the upper and lower positions in the square groove, and the position after sliding can be positioned, which can further stabilize the position of the sliding part.

[0040] As an example, the attached Figure 8 As shown, the front end face of the crown gear of the second rotation limiter 4 described in the present application does not protrude from the front end face of the connecting and fixing plate 1; that is, a groove for accommodating the crown gear can be provided on the front end face of the connecting and fixing plate, and the groove has a certain lateral extension length, which is convenient for the sliding member to drive the second rotation limiter to slide laterally; it also has a certain depth, so that the axial thickness of the crown gear is completely accommodated in the groove, and the second rotation limiter axially penetrates into the groove to engage with the second rotation limiter; adopting this structure, the chest support assembly and the connecting and fixing plate can be matched more closely, reducing the occupied space.

[0041] As attached Fig.10 As shown, the first rotation limiter 304 described in the present application is integrally arranged with the fixed base 3; that is, the first rotation limiter and the fixed base are integrally formed, and the two do not require additional assembly and bonding, etc., which can effectively increase the firmness of the first rotation limiter, form a whole with the chest support assembly, and realize stable circumferential rotation relative to the second rotation limiter.

[0042] As attached Figure 3-4 As shown, the chest support assembly a described in the present application also includes a silicone sleeve fixing plate 8 and a silicone sleeve 9, the silicone sleeve 9 is sleeved on the silicone sleeve fixing plate 8 (the contours of the two are adapted to each other, so that the silicone sleeve is conveniently sleeved thereon), and the silicone sleeve fixing plate 8 is snapped with the fixed base 3 (that is, structures that can be plugged and buckled with each other are provided on the adjacent inner surfaces of each other, which can be conventional shafts and shaft holes formed by plastic parts, buckles and other structures, which can be pressed and snapped together); the silicone sleeve 9 wraps the outer surface of the silicone sleeve fixing plate 8 and extends into the gap between the silicone sleeve fixing plate and the fixed base to fill the gap, and can also make the silicone sleeve more firmly combined with the silicone sleeve fixing plate, and it is not easy to fall off during the abutment process; adopting this structure, a complete and independent chest support assembly is formed, and the connection between the fixing plate and the fixed edge of the back cover is realized by connecting the gasket and the sliding member. This chest support assembly can not only achieve soft contact with the user's chest, but also facilitate the chest support assembly to rotate circumferentially to adjust the angle, and slide horizontally to adjust the spacing.

[0043] The specific working principle and action process of the sitting posture corrector of the present application are as follows: first, the gasket is sleeved with an elastic part, and then placed in the accommodating hole set on the first surface of the fixed base, and then the second rotation limit part and the first rotation limit part on the back of the fixed base are matched and assembled, and then placed in the square slot hole on the front of the connecting fixing plate, and then the sliding part is placed in the square slot on the back of the connecting fixing plate, and its columnar part passes through the square hole into the accommodating hole and fits with the axial hole of the gasket, and then a screw is axially inserted into the gasket to connect the gasket and the sliding part. At this time, one end of the elastic part abuts against the radial step surface of the gasket, and the other end abuts against the inner wall of the fixed base and is in a compressed state, so that the first rotation limit part and the second rotation limit part are axially pressed and fixed; then the silicone sleeve fixing plate is placed in the silicone sleeve, and then inserted into the column hole on the inner wall of the fixed base together to realize the connection to form a complete chest support assembly; the connecting fixing plate and the back cover fixing plate are plugged and buckled to form a sitting posture corrector, as shown in the attached figure Figure 1-2 As shown, the sitting posture corrector also includes a vertically arranged support rod, and a clamping assembly can be arranged at the lower end of the support rod to achieve connection and fixation between the support rod and the desktop, etc. The rear cover fixing plate of the present application is connected to the upper end of the support rod, and the support rod can be a telescopic structure that can be adjusted in height up and down, so as to adjust the height position of the chest support assembly as needed; the working principle and action process of this product: in a normal state, under the action of the top thrust of the elastic member, the first rotation limiter and the second rotation limiter engage with each other, so that the two chest supports are positioned circumferentially, and at the same time, the protrusion on the sliding member and the groove in the square groove are also snapped and engaged, so that the lateral spacing of the two chest supports is positioned, and the chest support can be used; if the angle needs to be adjusted circumferentially, it is only necessary to rotate the chest support assembly clockwise or counterclockwise in any direction, and the tubular gears in this process rotate circumferentially relative to each other to the next position and engage again; if the lateral spacing needs to be adjusted, the chest support assembly can be pulled to move horizontally left and right; the sitting posture corrector of the present application does not need to pull out the chest support assembly to rotate or move it in the original position, and can directly rotate circumferentially and move horizontally, which is more convenient and labor-saving to operate.

Claims

1. A sitting posture corrector, characterized in that: The structure comprises a chest support component (a), a connecting and fixing plate (1) and a rear cover fixing plate (2), wherein the connecting and fixing plate (1) and the rear cover fixing plate (2) are combined with each other; the chest support component (a) comprises a fixing base (3), wherein the fixing base (3) comprises a first surface (301) and a second surface (302) which are arranged opposite to each other, wherein the second surface (302) is adjacent to the connecting and fixing plate (1), wherein the first surface (301) is provided with a receiving hole (303), wherein the second surface (302) is provided with a first rotation limiting member (304), and wherein the second surface (302) is provided with a first rotation limiting member (305). A second rotation limiter (4) is provided between the surface (302) and the connecting and fixing plate (1), and the first rotation limiter (304) and the second rotation limiter (4) are meshed with each other; a sliding member (5) is provided between the connecting and fixing plate (1) and the rear cover fixing plate (2), and the sliding member (5) extends into the accommodating hole (303) and an elastic member (7) is provided between the sliding member (5) and the gasket (6), and the gasket (6) and the sliding member (5) are axially connected to compress the elastic member (7) between the gasket (6) and the fixing base (3).

2. The sitting posture corrector according to claim 1, characterized in that: The first rotation limiting member (304) and the second rotation limiting member (4) are both provided with crown gears that can mesh with each other.

3. The sitting posture corrector according to claim 1, characterized in that: A crown gear is arranged at one end of the second rotation limiting member (4), and a square portion (401) is arranged at the other end. The square portion (401) is slidably fitted in the square hole (101) of the connecting and fixing plate (1).

4. The sitting posture corrector according to claim 3, characterized in that: The sliding member (5) comprises a square base (501) and a columnar portion (502) extending along the square base (501); the front end surface of the square base (501) abuts against the back surface of the square hole (101) and can slide laterally relative to the square hole (101); the columnar portion (502) passes through the square hole (101) to the receiving hole (303) and is connected to the gasket (6).

5. The sitting posture corrector according to claim 4, characterized in that: The gasket (6) is provided with an axially extending shaft hole (601), and the columnar portion (502) is sleeved in the shaft hole (601).

6. The sitting posture corrector according to claim 4, characterized in that: A square groove (102) is provided on the back of the square hole (101), and the outer contour of the square base (501) is matched with the inner contour of the square groove (102).

7. The sitting posture corrector according to claim 4, characterized in that: A plurality of grooves (103) are arranged on the back of the square hole (101), and a corresponding protrusion (503) is arranged on the front end surface of the square base (501), and the protrusion (503) is matched with the groove (103).

8. The sitting posture corrector according to claim 7, characterized in that: The plurality of grooves (103) are disposed on the upper and lower sides of the square hole (101) and are arranged transversely, and the corresponding protrusions (503) are disposed on the upper and lower sides of the front end surface of the square base.

9. The sitting posture corrector according to claim 4, characterized in that: The front end surface of the crown gear of the second rotation limiting member (4) does not protrude from the front end surface of the connecting and fixing plate (1).

10. The sitting posture corrector according to claim 4, characterized in that: The first rotation limiting member (304) and the fixed base (3) are integrally arranged.

11. The sitting posture corrector according to claim 4, characterized in that: The chest support assembly (a) further comprises a silicone sleeve fixing plate (8) and a silicone sleeve (9), wherein the silicone sleeve (9) is sleeved on the silicone sleeve fixing plate (8), and the silicone sleeve fixing plate (8) is clamped with the fixing base (3).

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