Head lowering prevention corrector

By designing the main body, fixing components, jaw support, and adjustment components of the anti-head-down posture corrector, the problems of myopia and cervical spine diseases caused by head-down posture are solved. It achieves adaptive correction for different body types and individual needs, and improves the comfort and aesthetics of use.

CN223555023UActive Publication Date: 2025-11-18GUANGZHOU YOUXIANG CULTURAL SUPPLIES CO LTD
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Patent Information

Application Number
CN202422805214.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-15
Publication Date
2025-11-18
Estimated Expiration
2034-11-15

AI Technical Summary

Technical Problem

In existing technologies, the head-down posture easily leads to myopia and cervical spine diseases, especially affecting teenagers and children, and there is a lack of effective head-down correction devices.

Method used

A head-down posture correction device has been designed, including a support body, a fixing component, a chin support, and an adjustment component. The support body rests against the user's chest or shoulder, the chin support lifts the chin or jaw, and the adjustment component adjusts the height of the supporting part to restrict the head-down posture. At the same time, an anti-tilt head is designed to prevent the head from tilting, adapting to different body types and personalized needs.

Benefits of technology

It effectively restricts the downward head posture, adapts to different body types and individual needs, reduces the risk of myopia and cervical spine diseases, and improves user comfort and aesthetics.

✦ Generated by Eureka AI based on patent content.

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Abstract

An anti-head-lowering corrector comprises a support body 1. The fixing part 4 is connected with the bracket main body 1, and a wearing cavity 5 is formed between the fixing part 4 and the bracket main body 1; the jaw support piece 2 is provided with a lifting part 21; the adjusting assembly 3 is connected with the support body 1 and the jaw supporting piece 2 and suitable for changing the height position of the lifting part 21, and therefore the limiting height of the lower jaw or the jaw of the user is adjusted. The anti-head-lowering corrector is worn on the neck or the shoulder of a user through the support body and the fixing piece, the jaw supporting piece is arranged to support the jaw of the user, and therefore the head lowering posture of the user is limited; in addition, an adjusting assembly is further arranged, the distance between the jaw supporting part and the support body is changed, and therefore the support is suitable for users of different body types or personalized adjustment preferred by the users.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of body posture correction, in particular to a low head prevention corrector. BACKGROUND

[0002] Low head is an incorrect posture, whether standing posture or sitting posture, which often is an important inducement to cause myopia or cervical disease, especially for still in the body development adolescent children more destructive influence.

[0003] Therefore, it is necessary to provide a low head prevention corrector. SUMMARY

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0005] A low head prevention corrector, including support main body 1, be suitable for abutting the user's front chest or shoulder, fixed part 4 is connected support main body 1, and between fixed part 4 and support main body 1 form the wearing cavity 5 suitable for the human body neck passes through, still including jaw support part 2, has the lifting part 21 suitable for lifting user's lower jaw or chin, adjusting assembly 3 is connected support main body 1 and jaw support part 2, be suitable for changing the height position of lifting part 21, thereby adjusting the limiting height of user's lower jaw or chin.

[0006] Further, the adjusting assembly 3 includes at least one telescopic rod 31, the both ends of the rod 31 are connected with the jaw support part 2 and the support main body 1 respectively, the rod 31 includes multiple sub-rod bodies, which are sequentially connected by the first sub-rod 311 to the Nth sub-rod, N is greater than or equal to two, and the multiple sub-rod bodies are adjustably installed on the N-1th sub-rod in sequence according to the position of the Nth sub-rod, so as to realize the telescoping of the rod 31 and form an adjustable support between the support main body 1 and the jaw support part 2.

[0007] Further, the adjusting assembly 3 further includes a positioning mechanism 32 connected between two adjacent sub-rod bodies, the positioning mechanism 32 includes a positioning part 321 and a positioning part 322, the positioning part 322 is provided with a plurality of gears on the Nth sub-rod, the positioning part 321 is movably connected to the N-1th sub-rod, and the positioning part 321 can be engaged with different gears, so as to keep the rod 31 at different lengths.

[0008] Further, the N-1th sub-rod is adjustably sleeved in the Nth sub-rod, the positioning part 321 is movably connected to the side of the N-1th sub-rod away from the Nth sub-rod, and one end of the positioning part 321 can pass through the N-1th sub-rod and be engaged with the positioning part 322.

[0009] Further, the positioning member 321 comprises a main body part 3210 and a clamping part 3211 at one end of the main body part 3210; the main body part 3210 is slidably connected with the N-1th sub-rod, or the middle part of the main body part 3210 is rotatably connected with the N-1th sub-rod through a rotating shaft, and the clamping part 3211 can pass through the N-1th sub-rod and be matched with the positioning part 322, and the clamping part 3211 is clamped into or separated from the gear by operating the end of the main body part 3210 away from the clamping part 3211.

[0010] Further, a set of anti-inclination parts 11 are further arranged, one end of each of the anti-inclination parts 11 is connected with the support body 1, and the other end of each of the anti-inclination parts 11 extends from the support body 1 to the ear of a user, so as to limit the inclination of the user.

[0011] Further, a widening part 12 extends from at least one side of the anti-inclination part 11, and is suitable for increasing the width of the anti-inclination part 11.

[0012] Further, an avoiding groove 13 is arranged on the anti-inclination part 11, and is suitable for avoiding the ear of the user.

[0013] In another embodiment, the N-1th sub-rod is adjustably sleeved in the Nth sub-rod; the positioning member 321 is connected with the N-1th sub-rod through an elastic member, and is located on the side close to the Nth sub-rod; the elastic member is suitable for keeping the positioning member 321 clamped with the gear, and under the action of an external force, the positioning member 321 can be separated from the gear.

[0014] In another embodiment, the adjusting assembly 3 comprises a receiving plate, a clamping member and a positioning groove; the receiving plate is slidably connected with the support body 1, and the sliding direction of the receiving plate is distributed along the direction of making the jaw supporting member 2 close to or away from the chin of a user, and the jaw supporting member 2 is connected with the receiving plate; the clamping member and the positioning groove are arranged in one of the following manners: scheme one, the positioning groove is distributed on the support body 1 along the parallel line of the sliding track of the receiving plate, the clamping member is connected with the receiving plate and slides along with the receiving plate, and the clamping member has a clamping part matched with the clamping of the positioning groove; scheme two, the positioning groove is distributed on the receiving plate along the parallel line of the sliding track of the receiving plate, and the clamping member is slidably or rotatably connected with the support body 1, and the clamping member has a clamping part matched with the clamping of the positioning groove.

[0015] The low-head-preventing corrector is worn on the neck or shoulder of a user through the support body and the fixing member, and the jaw supporting member is arranged to lift the chin of the user, so as to limit the user from adopting a low-head posture; in addition, the adjusting assembly is arranged to change the distance between the jaw supporting part and the support body, so as to adapt to users of different body types or personalized adjustment preferred by the user. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] Figure 1 The structure schematic diagram of the lifting part of the anti-bowing corrector disclosed by the first embodiment of the present application in one height state.

[0018] Figure 2 The structure schematic diagram of the anti-bowing part of the anti-bowing corrector disclosed by the first embodiment of the present application. Figure 1 The structure schematic diagram of the anti-bowing part of the anti-bowing corrector disclosed by the first embodiment of the present application.

[0019] Figure 3 The structure schematic diagram of the lifting part of the anti-bowing corrector disclosed by the first embodiment of the present application in another height state.

[0020] Figure 4 The structure schematic diagram of the anti-bowing part of the anti-bowing corrector disclosed by the first embodiment of the present application. Figure 3 The structure schematic diagram of the anti-bowing part of the anti-bowing corrector disclosed by the first embodiment of the present application.

[0021] Figure 5 The partial exploded structure schematic diagram of the anti-bowing part of the anti-bowing corrector disclosed by the first embodiment of the present application. Figure 1

[0022] The partial exploded structure schematic diagram of the anti-bowing part of the anti-bowing corrector disclosed by the first embodiment of the present application. Figure 6 Figure 3 The structure schematic diagram of the positioning member.

[0023] Figure 7 The structure schematic diagram of the positioning member.

[0024] Explanation of reference signs:

[0025] 1, support body; 11, anti-bowing part; 12, widening part; 13, avoiding groove;

[0026] 2, jaw supporting member; 21, lifting part;

[0027] 3, adjusting assembly; 31, rod member; 311, first sub-rod; 312, second sub-rod; 32, positioning mechanism; 321, positioning member; 322, positioning part; 3210, main body part; 3211, clamping part;

[0028] 4, fixing member;

[0029] 5, wearing cavity;

[0030] 6, comfortable inner lining;

[0031] 7, spring. DETAILED DESCRIPTION

[0032] ​In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below in combination with embodiments and drawings. It should be noted that the embodiments described below in combination with the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0033] The terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features; the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0034] The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited.

[0035] The orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the technical solutions of the present application, and do not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation. For example, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium; the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0036] Example one

[0037] As Figures 1-7As shown, the low head posture corrector provided by the application is a preferred embodiment, which comprises a support body 1 having an abutting part adapted to abut against the chest or shoulder of a user; a fixing part 4 connected to the support body 1, and a wearing cavity 5 adapted for the neck of a human body to pass through is formed between the fixing part 4 and the support body 1; further comprising a jaw support part 2 having a lifting part 21 adapted to lift the lower jaw or chin of a user; an adjusting assembly 3 connected to the support body 1 and the jaw support part 2, adapted to change the height position of the lifting part 21, so as to adjust the limiting height of the lower jaw or chin of a user, so as to adapt to users of different body types or individual preferences of the same user.

[0038] Specifically, the abutting part of the support body 1 abuts against the chest position or shoulder position of the user during use, for example, the main support body is V-shaped as a whole, extending from both sides of the neck of the user to the chest direction and finally connected, and the abutting part is located at the connection, which abuts against the chest during use; for another example, the support body 1 is provided with a shoulder support part on each side, and the two shoulder support parts are connected by a connecting plate, and the abutting part is located at the shoulder support part, which abuts against the shoulder of the user during use.

[0039] The fixing part 4 is adapted to cooperate with the support body 1, so that the whole corrector can be worn on the neck or shoulder-neck part of the user; a wearing cavity 5 adapted for the neck of a human body to pass through is formed between the fixing part 4 and the support body 1, therefore, the fixing part 4 can be a simple elastic band, or can be composed of a lock or an elastic band and a hard rear neck support, which can all achieve the purpose of helping to wear the corrector, and different combinations can be selected according to actual conditions.

[0040] The jaw support part 2 has a lifting part 21 adapted to lift the lower jaw or chin of a user, which limits the low head posture of the user; the jaw support part 2 is connected to the support body 1 by the adjusting assembly 3, and the height position of the lifting part 21 is adjusted by the adjusting assembly 3, so as to adapt to users of different body types or match different height preferences of a user.

[0041] Preferably, the top surface of the lifting part 21 is an arc-shaped concave surface, the top end of the jaw support part is a magic tape fixed sponge, the lifting part 21 is arranged on the sponge, and the sponge has hole positions on both sides, which is more comfortable and breathable during use.

[0042] The adjusting assembly 3 is connected to the support body 1 and the jaw support part 2 at both ends, which is used to change the height position of the lifting part 21, which can be the height position relative to the chest of the user, or the height position relative to the ground; for example, it can be realized by changing the distance between the support body 1 and the jaw support part 2, or for example, it can be realized by changing the height position of the connection between the adjusting assembly 3 and the support body 1. This embodiment is described by taking the length-adjustable telescopic mode of the adjusting assembly 3 as an example.

[0043] The adjusting assembly 3 comprises at least one telescopic rod 31, the rod 31 having two ends connected to the jaw holder 2 and the support body 1 respectively; the rod 31 comprises a plurality of sub-rod bodies, sequentially being a first sub-rod 311 to an Nth sub-rod, N being greater than or equal to two, the plurality of sub-rod bodies being connected in sequence and adjustably mounted on the (N-1)th sub-rod at the position of the Nth sub-rod, so as to realize the telescoping of the rod 31 and form an adjustable support between the support body 1 and the jaw holder 2. The first sub-rod 311 to the Nth sub-rod can be sequentially sleeved in the next sub-rod body or can be sequentially sleeved outside the next sub-rod body. In the embodiment, the rod 31 comprises two sub-rod bodies, the second sub-rod 312 being adjustably sleeved in the first sub-rod 311.

[0044] The specific adjusting assembly 3 further comprises a positioning mechanism 32 connected between the adjacent two sub-rod bodies; the positioning mechanism 32 comprises a positioning member 321 and a positioning portion 322; the positioning portion 322 is provided on the Nth sub-rod in a plurality of gears, the positioning member 321 being movably connected to the (N-1)th sub-rod, the positioning member 321 being capable of being engaged with different gears, so as to keep the rod 31 in different lengths.

[0045] Further, the (N-1)th sub-rod is adjustably sleeved in the Nth sub-rod; the positioning member 321 is movably connected to the side of the (N-1)th sub-rod away from the Nth sub-rod, and one end of the positioning member 321 is capable of passing through the (N-1)th sub-rod and being engaged with the positioning portion 322.

[0046] Further, the positioning member 321 comprises a main body portion 3210 and a gear portion 3211 at one end of the main body portion 3210; the main body portion 3210 is slidably connected to the (N-1)th sub-rod, or the middle portion of the main body portion 3210 is rotatably connected to the (N-1)th sub-rod through a rotating shaft, the gear portion 3211 being capable of passing through the (N-1)th sub-rod and being engaged with the positioning portion 322, and by operating the end of the main body portion 3210 away from the gear portion 3211, the gear portion 3211 is capable of being engaged into or disengaged from the gear.

[0047] In the embodiment, the sub-rod body is provided with two sections, the second sub-rod 312 is adjustably sleeved in the first sub-rod 311; the lower end of the first sub-rod 311 is fixedly connected with the support body 1, and the upper end of the second sub-rod 312 is fixedly connected with the jaw support 2; the positioning part 322 is arranged on the outer wall of the second sub-rod 312, preferably a row of tooth-shaped positioning grooves, and the positioning member 321 is arranged on the outer wall of the first sub-rod 311, i.e. on the side of the first sub-rod 311 facing away from the second sub-rod 312, specifically the middle of the main body part 3210 of the positioning member 321 is connected with the first sub-rod 311 through a rotating shaft, the clamping part 3211 is located at one end of the inner side of the main body part 3210, and the other end is suspended and abuts against the spring 7; the other end of the clamping part 3211 is caused to be separated from the positioning part 322 by pressing the spring end of the positioning member 321, then the length of the second sub-rod 312 extending into the first sub-rod 311 is adjusted, and the spring 7 can force the clamping part 3211 to be clamped into the positioning part 322 again by releasing the external force of the spring end of the positioning member 321.

[0048] In some other embodiments with poor effects, the spring 7 can not be arranged between the positioning member 321 and the first sub-rod 311, and the clamping part 3211 is caused to be clamped into or separated from the positioning groove by manual operation.

[0049] In some other embodiments, the above-mentioned positioning member 321 is slidingly connected to the first sub-rod 311, the positioning member 321 has an operating part, and the clamping part 3211 at the end of the positioning member 321 is caused to be clamped into or separated from the positioning part 322 by pushing and pulling the operating part.

[0050] Further, a set of anti-tipping head parts 11 are further included, one end of the anti-tipping head part 11 is connected with the support body 1, and the other end extends from the support body 1 to the user's ear, thereby forming a limit for tilting the head to the left or right. In the embodiment, the support body 1 and the anti-tipping head part 11 are preferably integrally formed, and both are support structures with a certain hardness to form a support framework.

[0051] Further, the widening part 12 extends at least on one side of the anti-tipping head part 11, which is suitable for increasing the width of the anti-tipping head area and further ensuring the anti-tipping head effect.

[0052] Preferably, the widening part 12 integrally extends on both sides of the anti-tipping head part 11; the widening parts 12 located on the same anti-tipping head part 11 are arranged in opposite directions, the widening parts 12 located on different anti-tipping head parts 11 and on the same side are arranged in opposite directions, and the widening part 12 extends from the anti-tipping head part 11 towards the opposite widening part 12, so that the inner side surface of the combination of the widening part 12 and the anti-tipping head part 11 is fitted with the curved curve of the lower side of the human head.

[0053] Further, the anti-inclination head 11 is provided with widened portions 12 on both sides thereof; the anti-inclination head 11 is provided with an avoiding groove 13 adapted to avoid the user's ear; preferably, the avoiding groove 13 extends from the anti-inclination head 11 to the two widened portions 12, so that the top of the combination of the anti-inclination head 11 and the widened portions 12 is of a streamlined concave shape, improving the appearance of the product.

[0054] Further, the application further comprises a comfortable inner lining 6, which is arranged on the inner side of the support body 1, the anti-inclination head 11 and the widened portions 12, i.e. the side close to the user, so as to improve the comfort of the product and thus optimize the user experience.

[0055] Embodiment Two

[0056] As a variation of the above embodiment, the positioning mechanism 32 is realized by the combination of the elastic ball head and the positioning portion 322 to fix the length of the rod 31.

[0057] Specifically, the N-1 sub-rod is adjustably sleeved in the N sub-rod; the positioning mechanism 32 comprises a ball head, an elastic member and a positioning groove; the positioning member 321 is the ball head, which is connected to the N-1 sub-rod through the elastic member and is located on the side close to the N sub-rod; the positioning portion 322 is a plurality of positioning grooves arranged on the N sub-rod; the elastic member is adapted to keep the ball head engaged with the gear, and under the action of external force, the ball head can be disengaged from the gear formed by the positioning grooves.

[0058] For example, the sub-rod body of the telescopic member is provided with three sections, the lower end of the first sub-rod 311 is connected to the support body 1, the second sub-rod 312 is sleeved on the outside of the first sub-rod 311, so that the first sub-rod 311 is adjustably connected in the second sub-rod 312, and the third sub-rod is similarly sleeved on the outside of the second sub-rod 312. The ball head is connected to the outer wall of the first sub-rod 311 through a spring or a compression spring, a plurality of positioning holes are arranged on the second sub-rod 312 along the length direction as the positioning portion 322, and the spring keeps the ball head engaged in the positioning hole. Under the action of external force, the spherical surface of the ball head guides the exit of the positioning hole, and the spring forces the ball head to be re-engaged in the next positioning hole until the length of the rod 31 is adjusted; similarly, the positioning mechanism 32 of the second sub-rod 312 and the third sub-rod is arranged in the same position and principle.

[0059] Embodiment Three

[0060] As another embodiment of the technical solution of the application, the telescopic rod adjustment mode is replaced by a sliding adjustment mode.

[0061] Specifically, the above-mentioned adjustment assembly 3 comprises a receiving plate, a clamping member and a positioning groove; the receiving plate is slidably connected to the support body 1, the sliding direction of the receiving plate is distributed along the direction in which the jaw support 2 approaches or moves away from the user's chin, and the jaw support 2 is connected to the receiving plate; the clamping member and the positioning groove are arranged in one of the following ways:

[0062] In the first aspect, the positioning grooves are arranged along the parallel lines of the sliding track of the receiving plate on the support body 1, the clamping parts are connected to the receiving plate and slide with the receiving plate, and the clamping parts have clamping parts matched with the positioning grooves.

[0063] In the second aspect, the positioning grooves are arranged along the parallel lines of the sliding track of the receiving plate on the receiving plate, the clamping parts are connected to the support body 1 by sliding or rotating, and the clamping parts have clamping parts matched with the positioning grooves.

[0064] Preferably, the receiving plate extends a support rod, and the jaw supporting part 2 is rotatably connected to the support rod, so that the supporting part 21 is more fitted to the chin or the lower jaw of the user.

[0065] The sliding connection between the receiving plate and the support body 1 can be achieved by, for example, forming a sliding groove on the support body 1, and slidingly arranging the receiving plate in the sliding groove; the positioning grooves can be arranged on the side walls of the sliding groove, and the clamping parts are arranged on both sides of the receiving plate, and the clamping parts 3211 are spherical head faces at the ends of the clamping parts, which are extruded into the positioning grooves by external force, so as to achieve the sliding positioning of the receiving plate and change the position of the supporting part 21.

[0066] For example, the positioning grooves are arranged in rows on the receiving plate, the clamping parts are slidably connected to the support body 1, and the clamping parts 3211 of the clamping parts are kept clamped into the positioning grooves by the compression spring, so as to form a reciprocating bolt locking structure and fix the position of the receiving plate.

[0067] For example, the positioning grooves are arranged in rows on the receiving plate, the clamping parts are rotatably connected to the support body 1, and the clamping parts 3211 are located at the end of the clamping parts away from the support body 1, so as to form a door buckle type locking structure and fix the position of the receiving plate.

[0068] The low-head-preventing corrector is worn on the neck or the shoulder of the user through the support body and the fixing part, and the jaw supporting part is arranged to support the chin of the user, so as to limit the user from adopting a low-head posture; in addition, the adjusting assembly is arranged to change the distance between the jaw supporting part and the support body, so as to adapt to users of different body types or personalized adjustment preferred by the user.

[0069] The above embodiments only express some embodiments of the present application, and those skilled in the art can make some modifications, replacements and improvements without creative labor on the premise of not departing from the concept of the present application, which all belong to the protection scope of the present application.

Claims

1. A low head preventing corrector, comprising a support body (1) adapted to abut against the chest or shoulder of a user; a fixing member (4) connected to the support body (1) and forming a wearing cavity (5) adapted for the neck of a human body to pass through between the fixing member (4) and the support body (1); characterized in that: further comprising a jaw supporting member (2) having a supporting part (21) adapted to support the lower jaw or chin of a user; an adjusting assembly (3) connected to the support body (1) and the jaw supporting member (2) and adapted to change the height position of the supporting part (21) so as to adjust the limiting height of the lower jaw or chin of a user. The adjusting assembly (3) comprises at least one telescopic rod member (31), both ends of the rod member (31) being connected to the jaw supporting member (2) and the support body (1) respectively. The rod member (31) comprises a plurality of sub-rod bodies, sequentially being a first sub-rod (311) to an Nth sub-rod, N being greater than or equal to two, the plurality of sub-rod bodies being adjustably mounted on the (N-1)th sub-rod in sequence according to the position of the Nth sub-rod to be connected in sequence, so as to realize the telescoping of the rod member (31) and form an adjustable support between the support body (1) and the jaw supporting member (2).

2. The anti-tuck-in corrector according to claim 1, wherein The adjusting assembly (3) further comprises a positioning mechanism (32) connected between two adjacent sub-rod bodies. The positioning mechanism (32) comprises a positioning member (321) and a positioning part (322).

3. The anti-tuck-in corrector according to claim 2, wherein The positioning part (322) is provided on the Nth sub-rod in a plurality of gears, the positioning member (321) is movably connected to the (N-1)th sub-rod, and the positioning member (321) can be matched with different gears to keep the rod member (31) at different lengths. The (N-1)th sub-rod is adjustably sleeved in the Nth sub-rod. The positioning member (321) is movably connected to one side of the (N-1)th sub-rod away from the Nth sub-rod, and one end of the positioning member (321) can pass through the (N-1)th sub-rod and be matched with the positioning part (322).

4. The anti-tuck-in corrector according to claim 3, characterized in that, The positioning member (321) comprises a main body part (3210) and a gear part (3211) at one end of the main body part (3210). The main body part (3210) is slidably connected to the (N-1)th sub-rod, or the middle part of the main body part (3210) is rotatably connected to the (N-1)th sub-rod through a rotating shaft, the gear part (3211) can pass through the (N-1)th sub-rod and be matched with the positioning part (322), and by operating the end of the main body part (3210) away from the gear part (3211), the gear part (3211) can be engaged into or disengaged from the gear.

5. The anti-tuck-in corrector according to claim 4, wherein The (N-1)th sub-rod is adjustably sleeved in the Nth sub-rod. The positioning member (321) is connected to the (N-1)th sub-rod through an elastic member and located on one side close to the Nth sub-rod.

6. The anti-tuck chin orthosis of claim 3, wherein The elastic member is adapted to keep the positioning member (321) engaged with the gear, and under the action of external force, the positioning member (321) can be disengaged from the gear. The adjusting assembly (3) comprises a receiving plate, a gear member and a positioning groove. ​ 7. The anti-tuck chin orthosis of claim 1, wherein ​ The receiving plate is slidingly connected to the support body (1), and the sliding direction is along the direction of making the jaw rest (2) close to or away from the chin of the user, and the jaw rest (2) is connected to the receiving plate; The clamping part and the positioning groove are arranged in one of the following manners: In the first scheme, the positioning groove is distributed along the parallel line of the sliding track of the receiving plate on the support body (1), the clamping part is connected to the receiving plate and slides along the receiving plate, and the clamping part has a clamping part matched with the clamping part of the positioning groove; In the second scheme, the positioning groove is distributed along the parallel line of the sliding track of the receiving plate on the receiving plate, the clamping part is slidingly or rotatably connected to the support body (1), and the clamping part has a clamping part matched with the clamping part of the positioning groove.

8. The anti-tuck-in orthosis according to any one of claims 1 to 7, characterized in that A set of anti-inclination head parts (11) are further included, one end of which is connected to the support body (1), and the other end extends from the support body (1) to the ear of the user, thereby forming a left or right head inclination limit.

9. The anti-tuck chin orthosis of claim 8, wherein, A widening part (12) extends on at least one side of the anti-inclination head part (11), which is suitable for increasing the width of the anti-inclination head part.

10. The anti-tuck chin orthosis of claim 9, wherein, An avoiding groove (13) is arranged on the anti-inclination head part (11), which is suitable for avoiding the ear of the user.