Adjustable neck tractor

Abstract

The utility model provides an adjustable neck tractor. The adjustable neck tractor comprises a shoulder support assembly, a head support assembly and at least two pushing and lifting limiting devices. The two pushing and lifting limiting devices are connected with the shoulder support assembly and the head support assembly, so that the shoulder support assembly and the head support assembly are supported to have a preset height difference, and the shoulder support assembly and the head support assembly are used for pulling the neck of a human body through the synergistic effect of head support and shoulder support. The shoulder support width provided by the shoulder support assembly can be adjusted to adapt to the shoulder and neck size of a user, and the height difference between the head support assembly and the shoulder support assembly is adjusted through the shoulder support width of the shoulder support assembly.

Description

Technical Field

[0001] This utility model relates to a neck traction device, and more particularly to an adjustable neck traction device. Background Technology

[0002] With the widespread use of various electronic devices and the rise of paperless offices, people are forced to spend long periods of time in front of computer screens or other screens, especially in incorrect sitting postures, making cervical spondylosis a common and prevalent disease.

[0003] Cervical spondylosis has various contributing factors, such as degenerative changes in the cervical spine, developmental cervical spondylosis, chronic strain, and congenital malformations. Among these, degenerative changes and chronic strain are the main causes. As patients age, the intervertebral discs in the cervical spine gradually degenerate, leading to structural changes in the cervical spine and a series of pathophysiological alterations. In cases of chronic strain of the cervical spine, poor sleeping posture, improper working posture, and inappropriate physical exercise can all contribute to cervical spondylosis. In daily work and study, improper working posture is a significant contributing factor. Statistics show that sedentary jobs, even those with low intensity, require prolonged periods of maintaining the same posture or looking down, such as houseworkers, office workers, and assembly line workers. Over time, this can easily lead to cervical spondylosis.

[0004] As a rehabilitation device for cervical spondylosis, cervical traction devices can stabilize and protect the cervical spine, reduce the progression of cervical spondylosis, consolidate treatment, and prevent recurrence. Cervical traction devices are suitable for various types of cervical spondylosis. The following are some common types of cervical traction devices:

[0005] One type is a rigid cervical traction device. This type of cervical traction device is often made of rigid materials and can effectively fix and restrict the movement of the neck. It is often used for the fixation of cervical fractures or dislocations and has a good effect. However, this type of rigid cervical traction device is often difficult to adjust and adapt to. Different models and sizes of cervical traction devices can only be selected according to different patients. However, even if different models are available, it is often impossible to achieve a perfect match for the patient.

[0006] Another type is the inflatable neck traction device, made of inflatable soft material. This type of inflatable neck traction device can adjust the inflation amount according to the user's neck size and other factors to adapt to various neck sizes. However, the support and fixation effect of this type of inflatable neck traction device is slightly worse, and the lower part of this type of neck traction device is difficult to fit against the user's shoulder or chest, resulting in insufficient stability. This leads to its less than ideal effect in assisting the treatment of cervical spondylosis.

[0007] On November 26, 2021, the applicant filed a Chinese utility model patent application entitled "Adjustable Neck Support and its Lifting Limiting Device," application number CN202111423766.7. This patent application uses a lifting limiting device to adjust the height of the adjustable neck support to match the neck length of different users, thus improving its applicability. The proposed technical solution addresses the applicability issue for users with varying neck lengths to a certain extent, eliminating the need for custom-made neck supports for each user. Users can adjust the neck support to suit their own neck length and obtain better support. However, the lifting limiting device raises or lowers the neck support by a preset height, such as 1 cm, each time. Since human neck length varies from person to person, it is difficult to achieve a perfect match for the user's neck length through phased adjustments, simultaneously meeting the dual requirements of comfort and support. For example, if the neck support is raised too high, it will overstretch the neck while exerting significant pressure on the shoulders, causing discomfort. Conversely, if the height is not adjusted to the required level, it will fail to provide adequate support. In particular, people's necks vary in thickness, and the distance between their shoulders also varies in width. If the width of the neck brace does not properly adapt to the size of the human neck and shoulders, the entire neck brace will fail to provide a comfortable neck support experience.

[0008] In conclusion, this patent still does not fully solve the problem of the universality of neck traction devices, and it is difficult to make the user's neck comfortable, stable and effective by adjusting the product. Utility Model Content

[0009] The advantage of this invention is that it provides an adjustable neck traction device, which improves the applicability of the neck traction device through multi-dimensional adjustment, so that users can adjust the neck traction device to obtain a structure and size that suits them, thereby obtaining comfortable, stable and effective neck support and traction.

[0010] Another advantage of this invention is that it provides an adjustable neck traction device, wherein the height of the adjustable neck traction device is adjusted by a set of lifting limit devices and a shoulder support adjustment component working together, and the shoulder support width of the adjustable neck traction device is controlled at the same time. Thus, the size adjustment of the adjustable neck traction device is achieved by the coordinated action of the lifting limit devices and the shoulder support adjustment component, so that it can be adapted to the user's body shape.

[0011] Another advantage of this invention is that it provides an adjustable neck traction device, wherein the height of the adjustable neck traction device is adjusted by a set of lifting and limiting devices so that the height of the adjustable neck traction device can be adjusted to adapt to the length of the user's neck. The size of the adjustable neck traction device and the shoulder support support size are adjusted by a shoulder support adjustment component. At the same time, the height of the adjustable neck traction device can be finely adjusted by the shoulder support adjustment component. Thus, through the synergistic effect of the lifting and limiting devices and the shoulder support adjustment component, the size of the adjustable neck traction device is achieved, so that it adapts to the user's body shape and avoids excessive pressure caused to the user due to improper size.

[0012] Another advantage of this invention is that it provides an adjustable neck traction device, wherein the shoulder support adjustment component is located on the front side, so that the user can still easily make adjustments after wearing the adjustable neck traction device.

[0013] Another advantage of this invention is that it provides an adjustable neck traction device, which includes a pair of lifting limit devices and a shoulder support adjustment assembly. The lifting limit device includes a lifting component, which can be adjusted in stages to allow the two lifting components to be accurately adjusted to the same height, thereby improving the accuracy of adjustment. The shoulder support adjustment assembly can adjust the shoulder width support dimension while adjusting the extension direction of the lifting limit device, thereby fine-tuning the height dimension of the adjustable neck traction device through the shoulder width support dimension, thus achieving the dual effect of precise adjustment of the shoulder width support angle and the height of the neck traction device.

[0014] Another advantage of this invention is that it provides an adjustable neck traction device, which includes a pair of lifting limiting devices and a shoulder support adjustment component. The lifting limiting devices can limit the jaw support component to a position to prevent vertical downward movement due to vertical pressure. The shoulder support adjustment component can be locked to provide stable support for the human shoulder, thereby ensuring the health effect.

[0015] Another advantage of this invention is that it provides an adjustable neck traction device, which includes a pair of lifting limit devices and a shoulder support adjustment assembly. The lifting component of the lifting limit device includes a rotation positioning element, which can play a positioning role when the user rotates to adjust the lifting limit device and emits an audible reminder when it reaches the positioning point. The shoulder support adjustment assembly includes a rotation positioning element, which can play a positioning role when the user rotates to adjust the shoulder support adjustment assembly and emits an audible reminder when it reaches the positioning point. Both the lifting limit device and the shoulder support adjustment assembly are adjusted by rotation, making the operation simpler and easier to master.

[0016] Another advantage of this invention is that it provides an adjustable neck traction device, which includes a shoulder support assembly and a shoulder support adjustment assembly. The shoulder support assembly includes a soft shoulder support padding component, which is detachably disposed at the bottom of the shoulder support assembly. The shoulder support adjustment assembly is disposed on the shoulder support assembly so that the shoulder width support size provided by the shoulder support assembly is adjustable, allowing the shoulder support assembly to fit the user's shoulder in a more suitable manner. This allows the user's shoulder to more comfortably bear the weight of the adjustable neck traction device, while also improving its wearing stability. At the same time, the detachable structure also allows the shoulder support padding component to be quickly replaced.

[0017] Another advantage of this invention is that it provides an adjustable neck traction device, wherein the jaw support assembly of the adjustable neck traction device includes a soft jaw support padding component, which is disposed on the upper side of the jaw support assembly, so that the jaw support padding component can fit more comfortably and stably against the user's lower jaw.

[0018] Another advantage of this invention is that it provides an adjustable neck traction device, wherein the rear neck traction component of the adjustable neck traction device is movably connected to the jaw support component, so that the rear neck traction component can better fit the back of the user's neck through force displacement, and with the auxiliary support adjustment of the shoulder support component, the stability of the adjustable neck traction device is improved.

[0019] Another advantage of this invention is that it provides an adjustable neck traction device, wherein the rear neck traction component of the adjustable neck traction device includes a rear neck traction device adjustment component, wherein the rear neck traction device adjustment component can adjust the tightness of the rear neck traction component, so that the adjustable neck traction device of this invention can better fit the user's neck size, so that it can more tightly wrap around the user's back neck, thereby improving the stability of the adjustable neck traction device.

[0020] To achieve the foregoing and other objectives, this utility model provides an adjustable neck traction device. The adjustable neck traction device includes a shoulder support assembly, a headrest assembly, and at least two lifting limiting devices, wherein the two lifting limiting devices connect the shoulder support assembly and the headrest assembly, thereby supporting the shoulder support assembly and the headrest assembly to have a preset height difference, and thus enabling the shoulder support assembly and the headrest assembly to provide traction to the human neck through the coordinated action of supporting the head and shoulders.

[0021] The shoulder support assembly provides an adjustable shoulder support width to accommodate the user's neck and shoulder dimensions, and the height difference between the headrest assembly and the shoulder support assembly can be adjusted by adjusting the shoulder support width of the shoulder support assembly.

[0022] According to one embodiment of the present invention, the shoulder support assembly includes two shoulder support arms and a shoulder support adjustment assembly, wherein the shoulder support adjustment assembly is connected to the two shoulder support arms and is used to control the distance adjustment between the two shoulder support arms.

[0023] According to one embodiment of the present invention, the distance between the two shoulder support arms can be adjusted by operating the shoulder support adjustment assembly, wherein the reduction of the distance between the two shoulder support arms can also be achieved by applying opposing forces to the two shoulder support arms.

[0024] According to one embodiment of the present invention, the headrest assembly includes a jaw support assembly and a posterior neck traction assembly. The tightness of the posterior neck traction assembly can be adjusted to adapt to the user's head size. The posterior neck traction assembly includes a posterior neck traction pressure-bearing component and a posterior neck traction adjustment component. The posterior neck traction adjustment component is adjustablely connected to the posterior neck traction pressure-bearing component. The posterior neck traction adjustment component includes a first adjustment plate, a second adjustment plate, an adjustment mechanism, and a positioning shell. The first adjustment plate and the second adjustment plate are stacked and engaged inside the positioning shell. The adjustment mechanism is rotatably mounted on the outside of the positioning shell and is adjustablely connected to the first adjustment plate and the second adjustment plate. The tightness of the posterior neck traction assembly can be adjusted by operating the adjustment mechanism. The tightness of the posterior neck traction assembly can also be adjusted by applying opposing forces to the first adjustment plate and the second adjustment plate.

[0025] According to one embodiment of the present invention, the two lifting and limiting devices are respectively pivotally mounted on the two shoulder support arms.

[0026] According to one embodiment of the present invention, the shoulder support arm includes a pivot limiting structure and a shoulder support body, wherein the pivot limiting structure is integrally formed on the shoulder support body to limit the pivot angle range of the shoulder support body relative to the lifting limiting device.

[0027] According to one embodiment of the present invention, the pivoting limiting structure has a pivoting limiting structure limiting cavity, wherein the pushing limiting device is at least partially accommodated within the pivoting limiting structure limiting cavity.

[0028] According to one embodiment of the present invention, the shoulder support arm further includes a shoulder support adjustment connection portion integrally formed with the shoulder support body, wherein the shoulder support adjustment connection portion extends in a planar manner.

[0029] According to one embodiment of the present invention, the shoulder support body extends in an arc shape to form a contour that matches the human shoulder.

[0030] According to one embodiment of the present invention, the shoulder support adjustment assembly includes a pair of opposing translation limit elements, a translation control structure, and a control element, wherein the two translation limit elements are respectively fixed to the two shoulder support arms to control the translation and fixation of the two shoulder support arms.

[0031] According to one embodiment of the present invention, the shoulder support adjustment assembly further includes a translation direction limiting mechanism, wherein the translation direction limiting mechanism restricts the increase of the distance between the two shoulder support arms to be adjusted only by operating the shoulder support adjustment assembly, wherein the translation direction limiting mechanism allows the decrease of the distance between the two shoulder support arms to be adjusted by applying opposing forces to the two shoulder support arms.

[0032] According to one embodiment of the present invention, the posterior neck traction device adjustment component further includes an adjustment direction limiting mechanism, wherein the adjustment direction limiting mechanism restricts the loosening of the posterior neck traction component to be adjusted only by operating the adjustment mechanism, wherein the adjustment direction limiting mechanism allows the tightening of the posterior neck traction component to be achieved by applying opposing forces to the first adjustment plate and the second adjustment plate.

[0033] According to one embodiment of the present invention, the translation control structure includes a translation control structure connecting part, a gear part, and a holding end, wherein the translation control structure connecting part, the gear part, and the holding end are integrally formed, wherein the translation control structure connecting part is mounted on the control element, so that the translation control structure can rotate with the rotation of the control element, wherein the translation control structure connecting part drives the gear part to rotate with the rotation of the control element, and thereby drives the translation limiting element to translate.

[0034] According to one embodiment of the present invention, the translation direction limiting mechanism includes a first ratchet element, a first direction limiting element, and a set of first limiting claws, wherein the first limiting claws are integrally formed on the control element, wherein the first ratchet element includes a first ratchet carrier and a set of circumferentially arranged first ratchet teeth, wherein the first ratchet teeth are integrally formed on the first ratchet carrier, wherein the first ratchet teeth are arranged in a ring and form a first limiting element receiving cavity, wherein the first direction limiting element is disposed in the first limiting element receiving cavity.

[0035] According to one embodiment of the present invention, the first direction limiting element includes a first central body and at least one first direction limiting control wing integrally extending from the first central body, wherein the first direction limiting control wing defines a first direction limiting engagement space, wherein the first central body has a first central hole and at least one first drive hole, wherein the translation control structure connecting portion passes through the first central hole, and wherein the first direction limiting claw is engaged in the first direction limiting engagement space and the first drive hole respectively, wherein when the control element is operated clockwise, the first direction limiting element rotates with the rotation of the first direction limiting claw integrally formed in the control element and the translation control structure connecting portion of the translation control structure, wherein in During the rotation of the first direction limiting element, when the first direction limiting control wing of the first direction limiting element contacts the first ratchet tooth, it is forced to move closer to the first central body and further moves to the next first ratchet tooth, thereby reducing the distance between the two shoulder support arms. When the control element is operated counterclockwise, the first direction limiting claw integrally formed in the control element applies force to the first direction limiting control wing, causing the first direction limiting control wing of the first direction limiting element to move closer to the first central body. This prevents the first direction limiting element from contacting the first ratchet tooth when rotated counterclockwise, thus avoiding obstruction by the first ratchet tooth and achieving distance adjustment between the two shoulder support arms. When the two shoulder support arms are subjected to opposing external forces, the two translation limiting elements are forced to move closer to each other and further drive the translation control structure to rotate clockwise, thereby causing the first direction limiting element to rotate. During the rotation of the first direction limiting element, when the first direction limiting control wing of the first direction limiting element contacts the first ratchet tooth, it is forced to move closer to the first central body and further moves to the next first ratchet tooth. When the two shoulder support arms are subjected to opposite external forces, the two translational limiting elements tend to move away from each other, and further drive the translational control structure to rotate counterclockwise, thereby driving the first direction limiting element to rotate counterclockwise. When the first direction limiting element rotates counterclockwise, the first direction limiting control wing of the first direction limiting element is resisted by the first ratchet tooth and cannot move counterclockwise. As it continues to be subjected to the counterclockwise rotational external force, the first direction limiting control wing tends to move away from the first central body, thus it cannot continue to move. Consequently, the two shoulder support arms cannot move away from each other under opposite external forces.

[0036] According to one embodiment of the present invention, the first adjusting plate further has a movable connecting hole and a first movable toothed hole. The movable connecting hole is opened at the outer end of the first adjusting plate, and the first movable toothed hole is opened laterally in the first adjusting plate. The second adjusting plate further has a detachable connector and a second movable toothed hole. The detachable connector is disposed at the outer end of the second adjusting plate. The second movable toothed hole is opened laterally in the second adjusting plate. The adjusting mechanism is simultaneously engaged with the first movable toothed hole of the first adjusting plate and the second movable toothed hole of the second adjusting plate, so that the user can adjust the distance between the outer end of the first adjusting plate and the outer end of the second adjusting plate by rotating the adjusting mechanism, thereby achieving the effect of adjusting the relaxation and tightening of the posterior neck traction component.

[0037] According to one embodiment of the present invention, the adjustment mechanism includes an operating body, a gear body, and a retaining part, wherein the first movable tooth hole and the second movable tooth hole are staggered and stacked, wherein the gear body of the adjustment mechanism passes through the first movable tooth hole and the second movable tooth hole and is matched and coupled with the tooth body and the tooth hole, so that the first adjustment plate and the second adjustment plate can be further driven to move in opposite directions or in opposite directions by driving the rotation of the gear body, wherein the gear body and the retaining part are integrally formed, wherein the operating body includes a hand-held body and an extension part, wherein the extension part extends integrally from the gear body axially and is connected to the hand-held body.

[0038] According to one embodiment of the present invention, the adjusting direction limiting mechanism includes a second ratchet element, a second direction limiting element, and a set of second limiting claws. The second limiting claws are integrally formed on the handheld body. The second ratchet element includes a second ratchet carrier and a set of circumferentially arranged second ratchet teeth. The second ratchet teeth are integrally formed on the second ratchet carrier. The second ratchet carrier is integrally formed with the positioning housing. The second ratchet teeth are arranged in a ring and form a second limiting element receiving cavity. The second direction limiting element is disposed within the second limiting element receiving cavity. The second direction limiting element includes a second central body and at least one second limiting control wing integrally extending from the second central body. The second limiting control wing defines a second limiting engagement space. The second central body has a second central hole and at least one second driving hole. The second limiting claws are respectively engaged in the second limiting engagement space and the second driving hole.

[0039] According to one embodiment of the present invention, when the operating body is operated clockwise, the second direction limiting element rotates with the rotation integrally formed in the operating body. During the rotation of the second direction limiting element, when the second limiting control wing of the second direction limiting element contacts the second ratchet tooth, it is forced to move closer to the second central body and further moves to the next second ratchet tooth. This, in turn, drives the first adjusting plate and the second adjusting plate closer together through the rotation of the gear body, thereby tightening the tension of the rear neck traction assembly. When an external force is applied to the first adjusting plate and the second adjusting plate to move closer together, the adjusting mechanism rotates clockwise, thereby driving the second direction limiting element to rotate. During the rotation of the second direction limiting element, when the second limiting control wing of the second direction limiting element contacts the second ratchet tooth, it is forced to move closer to the second central body and further moves to the next second ratchet tooth. This, in turn, drives the first adjusting plate and the second adjusting plate closer together through the rotation of the gear body, thereby tightening the tension of the rear neck traction assembly. When the plates are subjected to forces that move them away from each other, the adjustment mechanism tends to rotate counterclockwise, which in turn drives the second direction limiting element to rotate counterclockwise. When the second direction limiting element rotates counterclockwise, the second direction limiting control wing of the second direction limiting element is resisted by the second ratchet teeth and cannot move counterclockwise. Due to the continued counterclockwise rotational force, the second direction limiting control wing tends to move away from the second central body and cannot continue to move. As a result, the first adjustment plate and the second adjustment plate cannot move away from each other under opposite external forces. When the operating body is operated counterclockwise, the second direction limiting claw integrally formed in the operating body applies force to the second direction limiting control wing, thereby causing the second direction limiting control wing of the second direction limiting element to move closer to the second central body. Thus, when the second direction limiting element is rotated counterclockwise, it can avoid contact with the second ratchet teeth and avoid being blocked by the second ratchet teeth, thereby realizing the loosening adjustment of the rear neck traction assembly.

[0040] According to another aspect of the present invention, the present invention also provides an adjustment method for an adjustable neck traction device, comprising the following steps:

[0041] A) Wear the adjustable neck traction device around the user's neck;

[0042] B) Adjust the tightness of the posterior neck traction assembly;

[0043] C) Adjust the shoulder support width of the shoulder support assembly to match the user's neck thickness and shoulder width;

[0044] D) Adjust the height of the two lifting limit devices, thereby adjusting the height difference between the headrest assembly and the shoulder support assembly; and

[0045] E) Further adjust the shoulder support width of the shoulder support assembly to better match the user's neck thickness and shoulder width while adjusting the height difference between the headrest assembly and the shoulder support assembly.

[0046] The further objectives and advantages of this invention will become fully apparent from the following description and accompanying drawings.

[0047] These and other objects, features and advantages of this utility model are fully realized through the following detailed description, the accompanying drawings and the claims. Attached Figure Description

[0048] Figure 1 This is a perspective view of an adjustable neck traction device according to a preferred embodiment of the present invention.

[0049] Figure 2 This is a three-dimensional structural schematic diagram of the adjustable neck traction device according to the above-described preferred embodiment of the present invention.

[0050] Figure 3 This is another perspective structural schematic diagram of the adjustable neck traction device according to the above-described preferred embodiment of the present invention.

[0051] Figure 4 This is another perspective structural schematic diagram of the adjustable neck traction device according to the above-described preferred embodiment of the present invention.

[0052] Figure 5 This is another perspective structural diagram of the adjustable neck traction device according to the above-described preferred embodiment of the present invention, illustrating a center line of the adjustable neck traction device.

[0053] Figure 6 This is an exploded structural diagram of the adjustable neck traction device according to the above-described preferred embodiment of the present invention.

[0054] Figure 7 This is an exploded structural diagram of a shoulder support adjustment component of the adjustable neck traction device according to the above-described preferred embodiment of the present invention.

[0055] Figure 8 The structure of the shoulder support adjustment assembly of the adjustable neck traction device according to the above preferred embodiment of the present invention is explained.

[0056] Figure 9 This is an exploded structural diagram of a rear neck traction adjustment component of the adjustable neck traction device according to the above-described preferred embodiment of the present invention.

[0057] Figure 10The structure of a lifting limit device of the adjustable neck traction device according to the above preferred embodiment of the present invention is explained.

[0058] Figures 11 to 14 The adjustment process of the adjustable neck traction device according to the above-described preferred embodiment of the present invention is explained. Detailed Implementation

[0059] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0060] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0061] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0062] Figures 1 to 14An adjustable cervical traction device according to a preferred embodiment of the present invention is described. This adjustable cervical traction device is used to assist in the treatment of cervical spondylosis or to protect the cervical spine to prevent cervical spondylosis. Users or patients can wear this adjustable cervical traction device to achieve its effects. The adjustable cervical traction device adjusts in three dimensions—shoulder, neck, and head—so that the wearer achieves cervical traction through the synergistic effect of shoulder support and head support. The shoulder support component can be adjusted to match the size and contour of the human neck and shoulders, and the head support component can also be adjusted to match the size and contour of the human head. The distance between the shoulder support component and the head support component can be adjusted to accommodate the length of the human neck. Therefore, this adjustable cervical traction device can be more comfortably and stably adapted to the head, neck, and shoulders, thereby providing traction to the neck.

[0063] According to a preferred embodiment of this utility model, the adjustable neck traction device includes a shoulder support assembly 10, a headrest assembly 20, and at least two lifting limiting devices 30. The two lifting limiting devices 30 connect the shoulder support assembly 10 and the headrest assembly 20 to maintain a preset distance between them, thereby providing traction to the neck through head support and shoulder support. In other words, the adjustable neck traction device provides neck support by pushing the head upward and pressing down the shoulders. Specifically, the two lifting limiting devices 30 provide strong support to the shoulder support assembly 10 and the headrest assembly 20, thereby supporting them at a preset distance when the adjustable neck traction device is worn. In other words, the lifting limiting devices 30 provide strong support. More specifically, the length of the lifting limiting device 30 is adjustable, so that the distance between the shoulder support assembly 10 and the headrest assembly 20 supported by the lifting limiting device 30 can be adjusted accordingly.

[0064] The headrest assembly 20 includes a jaw support assembly 21, a posterior neck traction assembly 22, and a neck pad assembly 23. The jaw support assembly 21 and the posterior neck traction assembly 22 are interconnected to provide head support in a coordinated manner. The neck pad assembly 23 is disposed on the posterior neck traction assembly 22 to provide more snug and comfortable support for the posterior neck. The adjustable neck traction device has a neck receiving space 50 for accommodating the human neck. The neck of the person wearing the adjustable neck traction device is accommodated within the neck receiving space 50 and is tractioned under the coordinated action of the shoulder support assembly 10 and the headrest assembly 20. The size of the neck receiving space 50 can be adjusted to adapt to the user's neck size.

[0065] The headrest assembly 20 is connected to the shoulder support assembly 10 via the lifting and limiting device 30, thereby providing traction to the human neck through the synergistic action of supporting the head and shoulders. Specifically, the jaw support assembly 21 of the headrest assembly 20 is connected to the shoulder support assembly 10 via the lifting and limiting device 30. Two lifting and limiting devices 30 are respectively connected to the shoulder support assembly 10 and the jaw support assembly 21 at both sides of the adjustable neck traction device. The posterior neck traction assembly 22 is semi-detachably connected to the jaw support assembly 21. It is worth mentioning that the so-called semi-detachable connection means that one end of the posterior neck traction assembly 22 is movably connected to one end of the jaw support assembly 21. The other end of the posterior neck traction assembly 22 is detachably and movably connected to the other end of the jaw support assembly 21. When the other end of the posterior neck traction assembly 22 is detached from the other end of the jaw support assembly 21, the headrest assembly 20 forms an upper neck wearing opening 200. The neck-accommodating space 50 is defined by the shoulder support assembly 10, the headrest assembly 20, and the two lifting and limiting devices 30, and its size and shape are adjustable. The size of the neck-accommodating space 50 can be adjusted by adjusting the shoulder support assembly 10, the headrest assembly 20, and the lifting and limiting devices 30 to fit the user's neck. Specifically, the neck-accommodating space 50 is adjustablely formed around the shoulder support assembly 10, the jaw support assembly 21, and the posterior neck traction assembly 22, wherein the size of the neck-accommodating space 50 can be adjusted by adjusting the shoulder support assembly 10, the headrest assembly 20, and the lifting and limiting devices to fit the user's neck.

[0066] The shoulder support assembly 10 can be worn and supported on the user's shoulders to bear the overall weight of the adjustable neck traction device and provide support through shoulder strength. The shoulder support assembly 10 includes a shoulder support adjustment assembly 11, two shoulder support arms 12, and a shoulder support padding component 13, wherein the two shoulder support arms 12 are respectively connected to both sides of the shoulder support adjustment assembly 11. The shoulder support padding component 13 is detachably mounted to the bottom of the shoulder support adjustment assembly 11 and the shoulder support arms 12.

[0067] Specifically, the shoulder support arm 12 extends in an arc shape to form a shoulder support surface 1201 that matches the shape of the human shoulder. This shoulder support surface 1201 defines a shoulder fixing space 120, thereby stably supporting the shoulder support arm 12 on the human shoulder. It is worth noting that the shoulder support arm 12 is made of a relatively rigid material, such as plastic, thus enabling the formation of a shoulder support surface 1201 that matches the shape of the human shoulder. Furthermore, to provide more comfortable support for the human shoulder, the shoulder support padding component 13 is made of a softer material and is fitted to the shoulder support surface 1201, so that the human shoulder can receive both stable support that conforms to its shape and support in a more comfortable manner.

[0068] For ease of description, the two shoulder support arms 12 are respectively labeled as the left shoulder support arm 12a and the right shoulder support arm 12b. The left shoulder support arm 12a extends in an arc shape to form a left shoulder support surface 1201a that matches the shape of the left shoulder of the human body. The left shoulder support surface 1201a defines a left shoulder fixing space 120a, thereby stably supporting the left shoulder support arm 12a on the left shoulder of the human body. The right shoulder support arm 12b extends in an arc shape to form a right shoulder support surface 1201b that matches the shape of the right shoulder of the human body. The right shoulder support surface 1201b defines a right shoulder fixing space 120b, thereby stably supporting the right shoulder support arm 12b on the right shoulder of the human body.

[0069] According to this preferred embodiment of the present invention, the shoulder support padding component 13 is integrally formed and is fitted onto the left shoulder support surface 1201a and the right shoulder support surface 1201b.

[0070] To accommodate the user's shoulder size, the distance between the left shoulder support arm 12a and the right shoulder support arm 12b can be adjusted. This ensures that when the user wears the adjustable neck traction device, their left shoulder is held in the left shoulder fixed space 120a, and their right shoulder is held in the right shoulder fixed space 120b. Specifically, the distance between the left shoulder support arm 12a and the right shoulder support arm 12b is adjusted via the shoulder support adjustment assembly 11. More specifically, the left shoulder support arm 12a and the right shoulder support arm 12b are respectively connected to both sides of the shoulder support adjustment assembly 11, thereby controlling the movement of the left shoulder support arm 12a and the right shoulder support arm 12b and adjusting their positions by adjusting the shoulder support adjustment assembly 11.

[0071] In accordance with the extension direction of the human shoulder, the left shoulder support arm 12a and the right shoulder support arm 12b are adjusted in position by lateral translation, thereby adjusting the distance between the left shoulder support arm 12a and the right shoulder support arm 12b.

[0072] It is worth mentioning that when the shoulder support adjustment assembly 11 is used to adjust the distance between the left shoulder support arm 12a and the right shoulder support arm 12b, the left shoulder support arm 12a and the right shoulder support arm 12b simultaneously perform translational movements in opposite directions. This ensures that the positions of the left shoulder support arm 12a and the right shoulder support arm 12b relative to the center line L of the adjustable neck traction device remain symmetrical, thus guaranteeing the balance of the adjustable neck traction device when worn. In other words, the left shoulder support arm 12a and the right shoulder support arm 12b are arranged in a mirror symmetrical configuration. When the distance between the left shoulder support arm 12a and the right shoulder support arm 12b is adjusted using the shoulder support adjustment assembly 11, the left shoulder support arm 12a and the right shoulder support arm 12b remain mirror symmetrical, and the plane of symmetry remains unchanged.

[0073] In other words, simply operating the shoulder support adjustment component 11 allows for simultaneous adjustment of the movement of the left shoulder support arm 12a and the right shoulder support arm 12b, maintaining their mirror symmetry. This ensures the adjustable neck traction device is easily and correctly worn, providing excellent neck health benefits. Furthermore, the shoulder support adjustment component 11 also assists the shoulder support arm 12 in providing additional shoulder support. Specifically, when the left shoulder support arm 12a and the right shoulder support arm 12b are supported on the left and right shoulders respectively, the shoulder support adjustment component 11 is positioned precisely at the front of the torso, providing further auxiliary support from the front of the torso. More specifically, when the head and neck are supported in a normal posture, the adjustable neck traction device only requires the combined action of the shoulder support provided by the left shoulder support arm 12a and the right shoulder support arm 12b and the head support provided by the headrest component 20 to provide effective neck traction. When the user lowers their head, excessive pressure is applied to the jaw support assembly 21 of the headrest assembly 20, and the shoulder support adjustment assembly 11 is pressed to the front of the human torso and further supported by the front of the human torso to prevent the user from lowering their head too much.

[0074] The left shoulder support arm 12a and the right shoulder support arm 12b maintain a preset distance at the rear to form a neck-wearing opening 1200, thereby facilitating the user's neck to enter and exit.

[0075] The shoulder support arm 12 includes a shoulder support body 121 and a shoulder support adjustment connection 122 integrally formed with the shoulder support body 121. The shoulder support body 121 extends in an arc shape to form a contour that matches the human shoulder, and forms the shoulder support surface 1201 and the shoulder fixing space 120. The shoulder support adjustment connection 122 integrally formed with the shoulder support body 121 extends in a planar shape, so that when the shoulder support adjustment assembly 11 is adjusted, the shoulder support adjustment connection 122 translates along its extension plane, and the entire shoulder support arm 12 translates along with the translation of the shoulder support adjustment connection 122. Specifically, when the shoulder support adjustment assembly 11 is adjusted, the shoulder support adjustment connection 122 translates laterally along its extension plane, and the entire shoulder support arm 12 translates laterally along with the lateral translation of the shoulder support adjustment connection 122. More specifically, when the shoulder support adjustment assembly 11 is adjusted, the shoulder support adjustment connection 122 translates left and right along its extension plane, and the entire shoulder support arm 12 translates left and right along with the left and right translation of the shoulder support adjustment connection 122, thereby matching the user's shoulder width.

[0076] Those skilled in the art will understand that when the shoulder support arm 12 moves left and right under the drive of the shoulder support adjustment assembly 11, the distance between the left shoulder support arm 12a and the right shoulder support arm 12b changes. Correspondingly, the distance between the two lifting limiting devices 30 and the connecting ends of the shoulder support arm 12 increases. Simultaneously, the state of the jaw support assembly 21 of the headrest assembly 20 remains unchanged. Correspondingly, the distance between the two lifting limiting devices 30 and the connecting points of the jaw support assembly 21 of the headrest assembly 20 remains unchanged. Therefore, the tilt angle of the two lifting limiting devices 30 changes, thereby changing the vertical distance between the headrest assembly 20 and the shoulder support assembly 10. Thus, the change in the distance between the left shoulder support arm 12a and the right shoulder support arm 12b of the shoulder support assembly 10 can be used to adjust the vertical distance between the headrest assembly 20 and the shoulder support assembly 10, thereby adapting to the length of the user's neck.

[0077] Specifically, the two lifting limiting devices 30 are used to adjust the distance between the headrest assembly 20 and the shoulder support assembly 10. When the adjustment of the distance between the headrest assembly 20 and the shoulder support assembly 10 by the two lifting limiting devices 30 cannot adapt to the user's neck size, the vertical distance between the headrest assembly 20 and the shoulder support assembly 10 can be fine-tuned by adjusting the distance between the left shoulder support arm 12a and the right shoulder support arm 12b, thereby achieving a precise match with the user's neck size. At the same time, the distance between the left shoulder support arm 12a and the right shoulder support arm 12b can be adjusted to match the user's shoulder width and neck thickness, thereby providing the user with comfortable and effective support.

[0078] According to this preferred embodiment of the present invention, the adjustment distance D between the left shoulder support arm 12a and the right shoulder support arm 12b is 0-2.8cm. When the adjustment distance between the left shoulder support arm 12a and the right shoulder support arm 12b is 0cm, the tilt angle of the two lifting limiting devices 30 is at its minimum. When the adjustment distance between the left shoulder support arm 12a and the right shoulder support arm 12b is greater than 0cm, the tilt angle of the two lifting limiting devices 30 increases. According to this preferred embodiment of the present invention, the initial state of the shoulder support assembly 10 is defined as when the tilt angle of the two lifting limiting devices 30 is at its minimum. In the initial state of the shoulder support assembly 10, the adjustment distance between the left shoulder support arm 12a and the right shoulder support arm 12b is 0cm. In other words, the adjustable distance between the left shoulder support arm 12a and the right shoulder support arm 12b is 2.8cm. The adjustable distance between the left shoulder support arm 12a and the right shoulder support arm 12b can be adjusted to be 0-2.8cm wider than the initial distance, thereby adapting to the user's shoulder width requirements while fine-tuning the vertical distance between the headrest assembly 20 and the shoulder support assembly 10.

[0079] According to this preferred embodiment of the present invention, the process of gradually increasing the adjustment distance D between the left shoulder support arm 12a and the right shoulder support arm 12b from 0 is controlled by operating the control element 113. The process of gradually decreasing the distance D between the left shoulder support arm 12a and the right shoulder support arm 12b from 2.8 can be controlled either by operating the control element 113 or by simultaneously applying opposing external forces to the left shoulder support arm 12a and the right shoulder support arm 12b. It is worth mentioning that this configuration allows the adjustable neck traction device to provide stable support while also allowing the user to easily fine-tune the support tightness and shoulder support width.

[0080] The instruction manual includes the attached diagram. Figures 11 to 14 The usage process of the adjustable neck support device according to this preferred embodiment of the present invention is explained. First, the user's neck enters the neck receiving space 50 through the upper neck wearing opening 200 and the lower neck wearing opening 1200. Then, the upper neck wearing opening 200 is closed, thereby providing a head support space for the user's head with the headrest assembly 20. The left shoulder support arm 12a and the right shoulder support arm 12b are respectively supported on the user's left and right shoulders. The size of the headrest assembly 20 can be adjusted according to the user's head size and contour. Further, the distance between the headrest assembly 20 and the shoulder support assembly 10 is adjusted by means of the push-limiting device 30 to accommodate the user's neck size, with reference to... Figure 12The relative positions of the left shoulder support arm 12a and the right shoulder support arm 12b are adjusted using the shoulder support adjustment component 11 of the shoulder support assembly 10, thereby adjusting the support shoulder width of the adjustable neck traction device to suit the user's shoulder width. (Reference) Figure 13 and Figure 14 When the relative positions of the left shoulder support arm 12a and the right shoulder support arm 12b are adjusted by adjusting the shoulder support adjustment component 11, the distance between the headrest component 20 and the shoulder support component 10 is also finely adjusted. This allows the adjustable neck traction device to provide a support size that better matches the user's neck size, thereby providing stable, effective, and comfortable traction. It is worth mentioning that when the distance between the headrest component 20 and the shoulder support component 10 is slightly smaller, or when the shoulder support distance provided by the left shoulder support arm 12a and the right shoulder support arm 12b is too large, the user can apply opposing external forces to the left shoulder support arm 12a and the right shoulder support arm 12b, thereby shortening the adjustable distance between the left shoulder support arm 12a and the right shoulder support arm 12b. Conversely, when the distance between the headrest assembly 20 and the shoulder support assembly 10 is slightly large, or when the shoulder support distance provided by the left shoulder support arm 12a and the right shoulder support arm 12b is too small, the user cannot increase the adjustable distance between the left shoulder support arm 12a and the right shoulder support arm 12b by applying opposite external forces to them. In other words, the increase in the adjustable distance between the left shoulder support arm 12a and the right shoulder support arm 12b can only be achieved by operating the control element, thereby preventing the left shoulder support arm 12a and the right shoulder support arm 12b from moving in opposite directions due to the external force supporting the shoulder upward, thus preventing unstable support.

[0081] The shoulder support adjustment assembly 11 includes a pair of opposing translation limit elements 111, a translation control structure 112, and a control element 113. The pair of translation limit elements 111 are respectively fixed to two shoulder support arms 12 to control the translation and fixation of the two shoulder support arms 12. Specifically, when the control element 113 is controlled, the control element 113 drives the translation control structure 112 to move, and then the translation control structure 112 drives the pair of translation limit elements 111 to translate left and right in a direction towards or away from each other. In turn, the pair of translation limit elements 111 drive the pair of shoulder support arms 12 fixed to them to translate left and right in a direction towards or away from each other.

[0082] According to this preferred embodiment of the present invention, the translation control structure 112 is driven to rotate around its rotation axis by rotating the control element 113, thereby causing the translation control structure 112 to translate left and right in a direction towards or away from each other, and further causing the pair of shoulder support arms 12 to translate left and right in a direction towards or away from each other. Specifically, the control element 113 and the translation control structure 112 are coaxially arranged, so that when the control element 113 is rotated, the translation control structure 112 rotates around the same axis as the control element 113. As the translation control structure 112 rotates, the pair of translation limiting elements 111 coupled to the translation control structure 112 translate with the rotation of the translation control structure 112, thereby causing the pair of shoulder support arms 12 to translate.

[0083] The translation control structure 112 includes a translation control structure connecting part 1121, a gear part 1122, and a holding end 1123. The translation control structure connecting part 1121 is mounted on the control element 113, so that the translation control structure 112 can rotate with the rotation of the control element 113. Specifically, the translation control structure connecting part 1121 is mounted on the control element 113, so that the translation control structure connecting part 1121 of the translation control structure 112 drives the gear part to rotate with the rotation of the control element 113, and thereby drives the pair of translation limit elements 111 to translate.

[0084] The control element 113 includes a knob 1131 suitable for rotation by hand, wherein the translation control structure connecting part 1121 of the translation control structure 112 is fixed to the knob 1131.

[0085] The translation control structure connecting portion 1121 includes an extension body 11211, wherein the extension body 11211 forms at least one engaging portion 112111, wherein the extension body 11211 extends into the fixing hole 1130 and is engaged in the engaging portion 112111, thereby enabling the translation control structure 112 to rotate as the knob 1131 of the control element 113 is rotated, avoiding operational malfunction. According to this preferred embodiment of the present invention, the control element 113 further includes an engaging body 1132 integrally protruding from the knob 1131, wherein the engaging body 1132 is formed in the fixing hole 1130, wherein when the translation control structure connecting portion 1121 is installed in the fixing hole 1130, the engaging body 1132 is engaged in the engaging portion 112111.

[0086] The gear portion 1122, integrally formed between the connecting portion 1121 of the translation control structure and the holding end 1123, includes a plurality of circumferentially distributed teeth 11221. Correspondingly, the translation limiting element 111 has a plurality of toothed grooves 1110, wherein the teeth 11221 are installed in the toothed grooves 1110.

[0087] Specifically, the two translational limiting elements 111 are respectively labeled as a left translational limiting element 111a and a right translational limiting element 111b. The left translational limiting element 111a is fixed to the left shoulder support arm 12a, and the right translational limiting element 111b is fixed to the right shoulder support arm 12b. The left translational limiting element 111a extends left and right, facilitating left and right movement and driving the left shoulder support arm 12a to move left and right. The right translational limiting element 111b extends left and right, facilitating left and right movement and driving the right shoulder support arm 12b to move left and right. The left translational limiting element 111a and the right translational limiting element 111b are arranged parallel to each other in opposite positions, so that when the gear part 1122 is rotated, the left translational limiting element 111a and the right translational limiting element 111b move in opposite directions or in opposite directions. Specifically, when the control element 113 is operated clockwise, the gear part 1122 rotates clockwise, causing the left translation limit element 111a and the right translation limit element 111b to move towards each other, thereby causing the left shoulder support arm 12a and the right shoulder support arm 12b to move closer to each other; when the control element 113 is operated counterclockwise, the gear part 1122 rotates counterclockwise, causing the left translation limit element 111a and the right translation limit element 111b to move away from each other, thereby causing the left shoulder support arm 12a and the right shoulder support arm 12b to move away from each other.

[0088] The translational limiting element 111 has a first limiting end 1111 and a second limiting end 1112, wherein a plurality of toothed grooves 1110 are arranged in a left-right direction, extending from the first limiting end 1111 to the second limiting end 1112. The plurality of toothed grooves 1110 are a first end toothed groove 11101, a second end toothed groove 11102 and a plurality of intermediate toothed grooves 11103, 11104, 11105..., wherein the intermediate toothed grooves 11103, 11104, 11105... are arranged in a straight line in the left-right direction, and the first end toothed groove 11101 and the second end toothed groove 11102 are distributed on the left and right sides of the intermediate toothed grooves 11103, 11104, 11105.... The distribution of the first end tooth groove 11101 and its adjacent intermediate tooth groove 11103 is adapted to the circumferential distribution of the multiple teeth 11221. The distribution of the second end tooth groove 11102 and its adjacent intermediate tooth groove 11103 is adapted to the circumferential distribution of the multiple teeth 11221, thereby ensuring that the translational limiting element 111 is stable at the starting position of adjustment.

[0089] Specifically, the left translational limiting element 111a has a left first limiting end 1111a and a left second limiting end 1112a, wherein a plurality of left toothed grooves 1110a formed in the left translational limiting element 111a are arranged in a left-right direction, extending from the left first limiting end 1111a to the left second limiting end 1112a. The plurality of left toothed grooves 1110a are respectively a left first end toothed groove 11101a, a left second end toothed groove 11102a and a plurality of left middle toothed grooves 11103a, 11104a, 11105a, etc., wherein the left middle toothed groove 11103a is arranged in a straight line in the left-right direction, and the left first end toothed groove 11101a and the left second end toothed groove 11102a are distributed on the left and right sides of the left middle toothed groove 11103a. The distribution of the left first end tooth groove 11101a and its adjacent left middle tooth groove 11103a is adapted to the shape of the circumferential distribution of the multiple teeth 11221, and the distribution of the left second end tooth groove 11102a and its adjacent left middle tooth groove 11103a is adapted to the shape of the circumferential distribution of the multiple teeth 11221a, thereby ensuring that the left translation limit element 111a is stable in the state of the adjustment start end position.

[0090] The right translational limiting element 111b has a right first limiting end 1111b and a right second limiting end 1112b, wherein a plurality of right toothed grooves 1110b formed in the right translational limiting element 111b are arranged in a right-right direction, extending from the right first limiting end 1111b to the right second limiting end 1112b. The plurality of right toothed grooves 1110b are respectively a right first end toothed groove 11101b, a right second end toothed groove 11102b and a plurality of right middle toothed grooves 11103b, 11104b, 11105b, etc., wherein the right middle toothed groove 11103b is arranged in a straight line in the right-right direction, and the right first end toothed groove 11101b and the right second end toothed groove 11102b are distributed on the right and right sides of the right middle toothed groove 11103b. The distribution of the right first end tooth groove 11101b and its adjacent right middle tooth groove 11103b is adapted to the circumferential distribution of the multiple teeth 11221, and the distribution of the right second end tooth groove 11102b and its adjacent right middle tooth groove 11103b is adapted to the circumferential distribution of the multiple teeth 11221b, thereby ensuring that the right translation limit element 111b is stable in the state of the adjustment start end position.

[0091] The tooth grooves 1110a of the left translation limiting element 111a and the tooth grooves 1110b of the right translation limiting element 111b are arranged facing each other. When at least one tooth 11221 of the gear portion 1122 enters at least one left tooth groove 1110a of the left translation limiting element 111a, another tooth 11221, which is arranged opposite to the first tooth 11221a, enters at least one right tooth groove 1110b of the right translation limiting element 111b, which is arranged corresponding to the left tooth groove 1110a. For example, when the first tooth 112211 of the gear portion 1122 enters the left first end tooth groove 11101a of the left translational limiting element 111a, the second tooth 112212, which is disposed opposite to the first tooth 11221a, enters the right first end tooth groove 11101b of the right translational limiting element 111b, which is disposed corresponding to the left first end tooth groove 11101a. When the first tooth 112211 of the gear portion 1122 enters the left second end tooth groove 11102a of the left translational limiting element 111a, the second tooth 112212, which is disposed opposite to the first tooth 11221a, enters the right second end tooth groove 11102b of the right translational limiting element 111b, which is disposed corresponding to the left second end tooth groove 11102a. When the first tooth 112211 of the gear section 1122 enters the left intermediate tooth groove 11103a of the left translational limiting element 111a, the second tooth 112212, which is opposite to the first tooth 11221a, enters the right intermediate tooth groove 11103b of the right translational limiting element 111b, which is correspondingly provided with the left intermediate tooth groove 11103a...

[0092] The lifting limit device 30 is pivotally connected to the shoulder support arm 12 to better adapt to the user's shoulder contour. Furthermore, to prevent the shoulder support arms 12 from becoming unsuitable for the user's shoulder contour when the distance between the two shoulder support arms 12 is adjusted, the pivotal connection between the lifting limit device 30 and the shoulder support arm 12 allows the tilt angle of the shoulder support arm 12 to automatically adjust, thus adapting to the user's shoulder contour. In other words, the pivotal connection between the lifting limit device 30 and the shoulder support arm 12 allows the tilt angle of the shoulder support arm 12 to automatically adjust according to the user's shoulder contour, providing a more comfortable wearing experience.

[0093] The shoulder support arm 12 has a shaft mounting structure 123, wherein the lifting and limiting device 30 includes a shaft 34, which is mounted on the shaft mounting structure 123 to allow the shoulder support arm 12 to pivot relative to the lifting and limiting device 30, thereby automatically adjusting the tilt angle according to the human body support it receives. It is worth noting that this automatic tilt angle adjustment is a fine-tuning within a preset range to avoid problems caused by excessive flexibility.

[0094] According to this preferred embodiment of the present invention, the shoulder support arm 12 further includes a pivoting limiting structure 124, wherein the pivoting limiting structure 124 is integrally formed on the shoulder support body 121 to limit the pivoting angle range of the shoulder support body 121 relative to the lifting limiting device 30.

[0095] The pivoting limiting structure 124 has a pivoting limiting structure limiting cavity 1240, wherein the pushing limiting device 30 partially passes through the pivoting limiting structure limiting cavity 1240 and the shaft 34 is mounted on the shaft mounting structure 123, wherein the pivoting limiting structure 124 provides a dual function of limiting and protecting.

[0096] The shoulder support padding component 13 is made of soft material, allowing it to fit comfortably and closely to the user for a more snug and comfortable fit.

[0097] The shoulder support adjustment assembly 11 further includes a translation direction limiting mechanism 114. Specifically, the translation direction limiting mechanism 114 includes a first ratchet element 1141, a first direction limiting element 1142, and a set of first limiting claws 1143, wherein the set of first limiting claws 1143 is integrally formed in the control element 113, wherein the first ratchet element 1141 includes a first ratchet carrier 11411 and a set of circumferentially arranged first ratchet teeth 11412, wherein the set of first ratchet teeth 11412 is integrally formed in the first ratchet carrier 11411. The set of first ratchet teeth 11412 is arranged in a ring and forms a first limiting element receiving cavity 11410, wherein the first direction limiting element 1142 is disposed in the first limiting element receiving cavity 11410.

[0098] The first directional limiting element 1142 is disposed within the first directional limiting element receiving cavity 11410. The first directional limiting element 1142 includes a first central body 11421 and at least one first directional limiting control wing 11422 integrally extending from the first central body 11421. The first directional limiting control wing 11422 defines a first directional engaging space 114220. The first central body 11421 has a first central hole 1142101 and at least one first driving hole 1142102. The set of first directional claws 1143 are respectively engaged within the first directional engaging space 114220 and the first driving hole 1142102.

[0099] When the control element 113 is operated clockwise, the first direction limiting element 1142 rotates along with the rotation of the first limiting claw 1143 integrally formed in the control element 113 and the translation control structure connecting part 1121 of the translation control structure 112. During the rotation of the first direction limiting element 1142, when the first limiting control wing 11422 of the first direction limiting element 1142 contacts the first ratchet tooth 11412, it is forced to move closer to the first center body 11421 and further moves to the next first ratchet tooth 11412, thereby reducing the distance between the two shoulder support arms 12.

[0100] When opposing external forces are applied to the two shoulder support arms 12, the two translational limiting elements 111 are forced to move closer together, further driving the translational control structure 112 to rotate clockwise, thereby causing the first direction limiting element 1142 to rotate. During the rotation of the first direction limiting element 1142, when the first direction limiting wing 11422 of the first direction limiting element 1142 contacts the first ratchet tooth 11412, it is forced to move closer to the first center body 11421 and further moves to the next first ratchet tooth 11412. In other words, when opposing external forces are applied to the two shoulder support arms 12, the first ratchet element 1141 does not prevent the first direction limiting element 1142 from rotating clockwise, so that the user can easily adjust the distance between the two shoulder support arms 12 by applying opposing external forces to the two shoulder support arms 12.

[0101] Conversely, when the two shoulder support arms 12 are subjected to opposite external forces, the two translational limiting elements 111 are forced to move away from each other, and further drive the translational control structure 112 to rotate counterclockwise, thereby driving the first direction limiting element 1142 to rotate counterclockwise. When the first direction limiting element 1142 rotates counterclockwise, the first direction limiting control wing 11422 of the first direction limiting element 1142 is resisted by the first ratchet tooth 11412 and cannot move counterclockwise. As it continues to be subjected to the counterclockwise rotational external force, the first direction limiting control wing 11422 tends to move away from the first central body 11421, thus it cannot continue to move. Consequently, the two shoulder support arms 12 cannot move away from each other under opposite external forces. In other words, when the two shoulder support arms 12 are subjected to opposite external forces, the first ratchet element 1141 prevents the first direction limiting element 1142 from rotating counterclockwise, so that the user cannot adjust the distance between the two shoulder support arms 12 by applying opposite external forces to the two shoulder support arms 12.

[0102] When the control element 113 is operated counterclockwise, the first limiting claw 1143 integrally formed on the control element 113 applies force to the first limiting control wing 11422, thereby causing the first center body 11421 of the first limiting control wing 11422 of the first direction limiting element 1142 to move closer. Thus, when the first direction limiting element 1142 is rotated counterclockwise, it can avoid contact with the first ratchet tooth 11412, thereby avoiding being blocked by the first ratchet tooth 11412, and thus realizing the distance adjustment of the two shoulder support arms 12.

[0103] The translation direction limiting mechanism 114 further includes a base plate 1144, wherein the base plate 1144 is mounted on the bottom of the first ratchet carrier 11411 and together with the first ratchet carrier 11411 defines a translation extension cavity 1140, wherein the translation limiting element 111 and the shoulder support adjustment connection 122 are disposed in the translation extension cavity 1140 and are capable of translating within the translation extension cavity 1140.

[0104] The jaw support component 21 is mainly used to support the user's lower jaw, thereby maintaining the user's neck at a desired angle.

[0105] The jaw support pad 213 is made of a soft material, allowing it to fit comfortably and closely to the user's jaw.

[0106] The lifting and limiting device 30 is used to adjust the height distance between the shoulder support assembly 10 and the jaw support assembly 21. The top end of each lifting and limiting device 30 is connected to the jaw support assembly 21, and the lower end of each lifting and limiting device 30 is pivotally connected to the shoulder support arm 12 of the shoulder support assembly 10. The lifting and limiting device 30 provides support force, thereby working in conjunction with the headrest assembly 20 and the shoulder support assembly 10 to provide traction support for the human neck.

[0107] The posterior neck traction assembly 22 provides support for the user's posterior neck and provides a support surface for the neck pad assembly 23. The posterior neck traction assembly 22 includes a posterior neck traction bearing component 221 and a posterior neck traction adjusting component 222, wherein the posterior neck traction adjusting component 222 is adjustablely connected to the outer middle of the posterior neck traction bearing component 221.

[0108] The posterior neck traction adjustment component 222 further includes a first adjustment plate 2221, a second adjustment plate 2222, an adjustment mechanism 2223, and a positioning housing 2224. The first adjustment plate 2221 and the second adjustment plate 2222 are stacked and engaged on the inner side of the positioning housing 2224. The adjustment mechanism 2223 is rotatably mounted on the outer side of the positioning housing 2224 and is adjustablely connected to the first adjustment plate 2221 and the second adjustment plate 2222. The positioning housing 2224 is fixedly connected to the outer side of the posterior neck traction pressure bearing component 221.

[0109] The first adjusting plate 2221 further has a movable connecting hole 22211 and a first movable toothed hole 22212. The movable connecting hole 22211 is formed at the outer end of the first adjusting plate 2221, and the first movable toothed hole 22212 is formed laterally in the first adjusting plate 2221. The second adjusting plate 2222 further has a detachable connector 22221, and the second adjusting plate 2222 has a second movable toothed hole 22222. The detachable connector 22221 is disposed at the outer end of the second adjusting plate 2222. The second movable toothed hole 22222 is laterally opened in the second adjusting plate 2222; and the adjusting mechanism 2223 is simultaneously engaged with the first movable toothed hole 22212 of the first adjusting plate 2221 and the second movable toothed hole 22222 of the second adjusting plate 2222, so that the user can adjust the distance between the outer end of the first adjusting plate 2221 and the outer end of the second adjusting plate 2222 by rotating the adjusting mechanism 2223, thereby achieving the effect of adjusting the relaxation and tightening of the posterior neck traction component 22.

[0110] According to this preferred embodiment of the present invention, the relaxation of the posterior neck traction component 22 is achieved by operating the adjustment mechanism 2223. The tightening of the posterior neck traction component 22 can be achieved either by operating the adjustment mechanism 2223 or by applying opposing forces to the first adjustment plate 2221 and the second adjustment plate 2222, thereby facilitating user operation.

[0111] The adjustment mechanism 2223 includes an operating body 22231, a gear body 22232, and a holding part 22233. The first movable tooth hole 22212 and the second movable tooth hole 22222 are staggered and stacked. The gear body 22232 of the adjustment mechanism 2223 passes through the first movable tooth hole 22212 and the second movable tooth hole 22222 and is matched and coupled with the tooth body and the tooth hole. Thus, by driving the rotation of the gear body 22232, the first adjustment plate 2221 and the second adjustment plate 2222 can be further driven to move in opposite directions or in opposite directions.

[0112] The gear body 22232 and the retaining part 22233 are integrally formed. The operating body 22231 includes a hand-held body 222311 and an extension 222312. The extension 222312 extends axially from the gear body 22232 and is connected to the hand-held body 222311. This facilitates disassembly and installation while allowing for convenient control of the rotation of the gear body 22232 through the operation of the hand-held body 222311.

[0113] Furthermore, the posterior neck traction adjustment component 222 includes an adjustment direction limiting mechanism 2225, so that the relaxation of the posterior neck traction component 22 is achieved by operating the adjustment mechanism 2223. The tightening of the posterior neck traction component 22 can be achieved either by operating the adjustment mechanism 2223 or by applying opposing forces to the first adjustment plate 2221 and the second adjustment plate 2222. Specifically, the adjustment direction limiting mechanism 2225 includes a second ratchet element 22251, a second direction limiting element 22252, and a set of second limiting claws 22253. The set of second limiting claws 22253 is integrally formed on the handgrip body 222311. The second ratchet element 22251 includes a second ratchet carrier 222511 and a set of circumferentially arranged second ratchet teeth 222512. The set of second ratchet teeth 222512 is integrally formed on the second ratchet carrier 222511, and the second ratchet carrier 222511 is integrally formed with the positioning housing 2224. The set of second ratchet teeth 222512 is arranged in a ring and forms a second limiting element receiving cavity 222510, in which the second direction limiting element 22252 is disposed.

[0114] The second directional limiting element 22252 includes a second central body 222521 and at least one second directional control wing 222522 integrally extending from the second central body 222521, wherein the second directional control wing 222522 defines a second directional engagement space 2225220, and wherein the second central body 222521 has a second central hole 22252101 and at least one second drive hole 22252102. The set of second directional claws 22253 are respectively engaged within the second directional engagement space 2225220 and the second drive hole 22252102.

[0115] When the operating body 22231 is operated clockwise, the second direction limiting element 22252 rotates with the rotation of the operating body 22231. During the rotation of the second direction limiting element 22252, when the second direction limiting control wing 222522 of the second direction limiting element 22252 contacts the second ratchet tooth 222512, it is forced to move closer to the second center body 222521 and further moves to the next second ratchet tooth 222512. Then, the rotation of the gear body 22232 drives the first adjusting plate 2221 and the second adjusting plate 2222 to move closer to each other, thereby tightening the tension of the rear neck traction assembly 22.

[0116] When the first adjusting plate 2221 and the second adjusting plate 2222 are subjected to an external force that brings them closer together, the adjusting mechanism 2223 rotates clockwise, thereby driving the second direction limiting element 22252 to rotate. During the rotation of the second direction limiting element 22252, when the second direction limiting control wing 222522 of the second direction limiting element 22252 contacts the second ratchet tooth 222512, it is forced to move closer to the second center body 222521 and further moves to the next second ratchet tooth 222512. In other words, when the first adjusting plate 2221 and the second adjusting plate 2222 are subjected to an external force that brings them closer together, the second ratchet element 22251 does not prevent the second direction limiting element 22252 from rotating clockwise, so that the user can easily adjust the tightness of the posterior neck traction assembly 22 by applying external force to the first adjusting plate 2221 and the second adjusting plate 2222.

[0117] Conversely, when the first adjusting plate 2221 and the second adjusting plate 2222 are subjected to forces that move them away from each other, the adjusting mechanism 2223 tends to rotate counterclockwise, thereby driving the second direction limiting element 22252 to rotate counterclockwise. When the second direction limiting element 22252 rotates counterclockwise, the second direction limiting control wing 222522 of the second direction limiting element 22252 is resisted by the second ratchet tooth 222512 and cannot move counterclockwise. As it continues to be subjected to the counterclockwise rotational external force, the second direction limiting control wing 222522 tends to move away from the second central body 222521 and thus cannot continue to move. Consequently, the first adjusting plate 2221 and the second adjusting plate 2222 cannot move away from each other under opposite external forces. In other words, when the first adjusting plate 2221 and the second adjusting plate 2222 are subjected to opposite external forces, the second ratchet element 22251 prevents the second direction limiting element 22252 from rotating counterclockwise. As a result, the user cannot achieve the purpose of loosening the tension of the posterior neck traction assembly 22 by applying opposite external forces to the first adjusting plate 2221 and the second adjusting plate 2222, thereby avoiding the posterior neck traction assembly 22 from being unsupported.

[0118] When the operating body 22231 is operated counterclockwise, the second limiting claw 22253 integrally formed on the operating body 22231 applies force to the second limiting control wing 222522, thereby causing the second limiting control wing 222522 of the second direction limiting element 22252 to move closer to the second center body 222521. Thus, when the second direction limiting element 22252 is rotated counterclockwise, it can avoid contact with the second ratchet tooth 222512, thereby avoiding being blocked by the second ratchet tooth 222512, and thus realizing the loosening adjustment of the rear neck traction assembly 22.

[0119] The movable connection hole 22211 of the first adjusting plate 2221 is movably connected to the jaw support assembly 21. The detachable connector 22221 of the second adjusting plate 2222 is detachably and movably connected to the jaw support assembly 21.

[0120] The neck pad assembly 23 is a soft component that can comfortably conform to the back of the user's neck. Optionally, the neck pad assembly 23 is implemented as an inflatable and deflated component.

[0121] Each lifting and limiting device 30 includes a housing 31, a lifting component 32, and an adjusting component 33. The lifting component 32 is retractably nested within the housing 31. The adjusting component 33 is retractably and adjustablely connected to the lifting component 32. Meanwhile, the upper end of each housing 31 is connected to the jaw support assembly 21.

[0122] Each housing 31 further includes a protective cover 311, and also has a sliding cavity 312, a sliding groove 313, and a connecting hole 314. The sliding cavity 312 is opened downwards inside the housing 31. The sliding groove 313 is opened downwards on the outside of the housing 31. The connecting hole 314 is opened in the housing 31. Preferably, the connecting hole 314 is located on the upper part of the housing 31. The protective cover 311 is installed on the outside of the connecting hole 314. Meanwhile, the lifting member 32 is adjustablely and telescopically installed in the sliding cavity 312 of the housing 31, and the jaw support assembly 21 is respectively installed from the inside and connected to the connecting hole 314 of each housing 31.

[0123] The lifting component 32 further includes a lifting range limiting member 321, a support frame 322, and a position adjusting member 323. The lifting range limiting member 321 is slidably nested within the support frame 322. The position adjusting member 323 is rotatably mounted on the support frame 322 and is adjustablely connected to the lifting range limiting member 321. Simultaneously, an adjusting member 33 is connected to the position adjusting member 323. The top of the lifting range limiting member 321 is connected to the connecting hole 314 of the housing 31. By rotating the adjusting member 33, the position adjusting member 323 can be adjusted, causing the position adjusting member 323 to move the lifting range limiting member 321 towards the protective cover or towards the shoulder support assembly, thereby extending or shortening the lifting limiting device 30.

[0124] The lifting range limiting member 321 further includes a position bar 3211, at least one positioning bar 3212, and a limiting member connecting portion 3213. The limiting member connecting portion 3213 is disposed on the top of the position bar 3211. Preferably, in a preferred embodiment of the present invention, two positioning bars 3212 are provided. The two positioning bars 3212 are respectively disposed on both sides of the position bar 3211. The position bar 3211 is tractably connected to the position adjusting member 323, and the limiting member connecting portion 3213 is connected to the connecting hole 314 of the housing 31. The position bar further includes a set of position holes 32111, wherein the position adjusting member 323 adjusts the position of the position holes 32111 to allow the lifting limiting device to move in the vertical direction.

[0125] The support frame 322 further includes a support frame limiting cavity 3221, a through hole 3222, and at least one positioning groove 3224, and the support frame 322 includes a shoulder support connecting portion 3225. The shoulder support connecting portion 3225 is disposed at the bottom of the support frame 322. The support frame limiting cavity 3221 is disposed inside the support frame 322. The support frame limiting cavity 3221 has an opening and is disposed at the top of the support frame 322. The through hole 3222 is disposed in the support frame 322. Preferably, the through hole 3222 is formed through the upper part of the support frame 322 from both sides. Two positioning grooves 3224 are horizontally oppositely disposed on the outer side of the through hole 3222.

[0126] The position bar 3211 and the positioning bar 3212 of the lifting range limiting member 321 are slidably nested within the support frame limiting cavity 3221 of the support frame 322. The position adjusting member 323 is rotatably mounted in the through hole 3222 of the support frame 322. The position bar 3211 has a set of position holes 32111. The position adjusting member 323 engages with different position holes, causing the lifting range limiting member 321 to move vertically. Preferably, the position bar 3211 is implemented as a rack.

[0127] The position adjusting member 323 further includes a rotating shaft connecting portion 3231, a rotating shaft body 3232, an engaging portion 3233, an elastic element 3235, and a rotating positioning member 3236, and the position adjusting member 323 has a positioning mounting cavity 3234. The rotating shaft connecting portion 3231 is disposed on the outer side of the rotating shaft body 3232, and the engaging portion 3233 is disposed on the other side of the rotating shaft body 3232. The positioning mounting cavity 3234 is formed in the rotating shaft body 3232. The elastic element 3235 and the rotating positioning member 3236 are respectively installed in the positioning mounting cavity 3234 from the inside to the outside, that is, the rotating positioning member 3236 is located outside the elastic element 3235. The elastic element 3235 applies an outward thrust to the rotating positioning member 3236. Meanwhile, the rotating shaft 3232 and the engaging portion 3233 of the position adjusting member 323 are both provided in the through hole 3222 of the support frame 322, and the rotating shaft connecting portion 3231 of the position adjusting member 323 is exposed in the support frame 322. The position bar 3211 of the lifting range limiting member 321 is engaged with the engaging portion 3233 of the position adjusting member 323, and the adjusting member 33 is connected to the rotating shaft connecting portion 3231 of the position adjusting member 323.

[0128] Preferably, the elastic element 3235 can be implemented as a spring, and the rotation positioning member 3236 can be implemented as a steel ball. In a preferred embodiment of the present invention, the engagement portion 3233 of the position adjusting member 323 further includes a limiting base 32331 and two engagement rods 32332. One end of the engagement rod 32332 is connected to the rotating shaft 3232, and the other end of the engagement rod 32332 is connected to the limiting base 32331. At the same time, the position bar 3211 of the lifting range limiting member 321 is engaged with each engagement rod 32332 of the engagement portion 3233 of the position adjusting member 323, so that the position adjusting member 323 can drive the lifting range limiting member 321 to move by rotation.

[0129] The adjusting member 33 further includes a rotating connecting portion 331 and an adjusting handle 332. Preferably, the rotating connecting portion 331 is disposed in the middle of the adjusting handle 332, and the movable connecting portion 331 is connected to the rotating shaft connecting portion 3231 of the position adjusting member 323. When the user rotates the adjusting handle 332, the rotating connecting portion 331 drives the position adjusting member 323 to rotate, thereby driving the lifting range limiting member 321 to move.

[0130] When the adjusting member 33 is rotated, it causes the position adjusting member 323 of the lifting member 32 to rotate within the through hole 3222 of the support frame 322. Simultaneously, the engaging rods 32332 of the engaging portion 3233 of the position adjusting member 323 sequentially engage the position bar 3211 as the member rotates, causing the position bar 3211 of the lifting range limiting member 321 to shift relative to the position adjusting member 323. Since the position adjusting member 323 is mounted on the support frame 322, this causes the lifting range limiting member 321 to shift upwards or downwards relative to the support frame 322.

[0131] From the outside, this displacement can be intuitively represented by the fact that the lifting limit device 30 itself can be adjusted to extend or shorten. By extending or shortening the lifting limit device 30 itself, the height difference between the shoulder support assembly 10 and the jaw support assembly 21 can be further adjusted, thereby changing the size of the neck accommodating space 50 to suit the user's neck size.

[0132] On the other hand, when the position adjustment member 323 is rotated, the rotation positioning member 3236 moves along with it. When the rotation positioning member 3236 moves to any positioning groove 3224 of the support frame 322, due to the outward pushing force applied to it by the elastic element 3235, the rotation positioning member 3236 is quickly pressed into the positioning groove 3224 of the support frame 322. Simultaneously, the rotation positioning member 3236 impacts the support frame 322 and produces a knocking sound. Furthermore, when the elastic element 3235 is quickly pressed into the positioning groove 3224 of the support frame 322, the rotation positioning member 3236 creates a certain resistance to the rotation of the position adjustment member 323, allowing the user to feel this resistance during rotation.

[0133] The positioning groove 3224 of the support frame 322 is horizontally positioned opposite to the outside of the through hole 3222. Therefore, the position adjustment member 323 will fall into the positioning groove 3224 of the support frame 322 once every 180° rotation. This characteristic gives the rotation of the position adjustment member 323 a segmented feel, and every 180° rotation of the position adjustment member 323 will cause the lifting range limiting member 321 to make an equal-length displacement, allowing the user to adjust the same length with a single rotation, i.e., adjust the length in a segmented manner. Furthermore, every time the position adjustment member 323 rotates 180°, the rotation positioning member 3236 falls into the positioning groove 3224. After the rotation positioning member 3226 falls into the positioning groove 3224, the movement of the lifting range limiting member 321 is restricted. In other words, even if the lifting range limiting member 321 is subjected to pressure exerted on it by the jaw assembly in the direction of the shoulder support assembly 10, the lifting range limiting member 321 is limited to its current position. The lifting range limiting member will not move in the direction of the shoulder support assembly 10. Preferably, further, when the rotating positioning member 3226 falls into the positioning groove 3224, a prompt sound is generated to remind the user that the position adjustment member 323 has been adjusted. The user can determine the degree of adjustment of the lifting range limiting member 321 by the number of prompt sounds generated. Preferably, the prompt sound is generated when the rotating positioning member 3226 contacts the positioning groove 3224.

[0134] Through the aforementioned impact sound and resistance, the user can clearly feel that the push-limit device 30 has completed an adjustment when operating the push-limit device 30.

[0135] Furthermore, when the rotating positioning member 3226 is located in the positioning groove, the adjusting handle 332 is in a vertical position. When the rotating positioning member 3226 is at a 90° angle to the transfer positioning groove, the adjusting handle 332 is in a horizontal position. In other words, based on the position of the adjusting handle 332, the user can basically determine whether the jaw support assembly is unbalanced. For example, if the adjusting handle 332 of one of the lifting limit devices is in a vertical position and the adjusting handle 332 of the other lifting limit device is in a horizontal position, the user can determine that the jaw support assembly is unbalanced. This unbalanced state means that the two ends of the jaw support assembly are not on the same horizontal plane.

[0136] According to a preferred embodiment of the present invention, a method of using the adjustable neck traction device includes the following steps:

[0137] A) Wear the adjustable neck traction device around the user's neck;

[0138] B) Adjust the tightness of the posterior neck traction component 22;

[0139] C) Adjust the shoulder support width of the shoulder support assembly 10 to match the user's neck thickness and shoulder width;

[0140] D) Adjust the height of the two lifting limit devices 30, thereby adjusting the height difference between the headrest assembly 20 and the shoulder support assembly 10; and

[0141] E) Further adjust the shoulder support width of the shoulder support assembly 10 to better match the user's neck thickness and shoulder width, while adjusting the height difference between the headrest assembly 20 and the shoulder support assembly 10.

[0142] It is worth mentioning that the above steps can achieve multi-dimensional adjustment of the neck traction device through a single adjustment to match the user. If necessary, some steps can be repeated until the neck receiving space 50 formed by the adjustable neck traction device matches the user.

[0143] Those skilled in the art should understand that the preferred embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. Furthermore, the purpose of the present invention has been fully and effectively achieved, and the functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from this principle, the implementation of the present invention may have any variations or modifications.

Claims

1. An adjustable neck traction device, characterized in that, It includes a shoulder support assembly, a headrest assembly, and at least two lifting and limiting devices, wherein the two lifting and limiting devices are connected to the shoulder support assembly and the headrest assembly, thereby supporting the shoulder support assembly and the headrest assembly to have a preset height difference, and thus enabling the shoulder support assembly and the headrest assembly to traction the human neck through the synergistic action of supporting the head and supporting the shoulders; The shoulder support assembly provides an adjustable shoulder support width to accommodate the user's neck and shoulder dimensions, and the height difference between the headrest assembly and the shoulder support assembly can be adjusted by adjusting the shoulder support width of the shoulder support assembly.

2. The adjustable neck traction device according to claim 1, wherein the shoulder support assembly includes two shoulder support arms and a shoulder support adjustment assembly, wherein the shoulder support adjustment assembly is connected to the two shoulder support arms and is used to control the distance adjustment between the two shoulder support arms.

3. The adjustable neck traction device according to claim 2, wherein the distance between the two shoulder support arms can be adjusted by operating the shoulder support adjustment assembly, and wherein reducing the distance between the two shoulder support arms can also be achieved by applying opposing forces to the two shoulder support arms.

4. The adjustable neck traction device according to claim 3, wherein the headrest assembly includes a jaw support assembly and a posterior neck traction assembly, wherein the tightness of the posterior neck traction assembly can be adjusted to adapt to the user's head size, wherein the posterior neck traction assembly includes a posterior neck traction pressure-bearing component and a posterior neck traction adjustment component, wherein the posterior neck traction adjustment component is adjustablely connected to the posterior neck traction pressure-bearing component, wherein the posterior neck traction adjustment component includes a first adjustment plate, a second adjustment plate, an adjustment mechanism, and a positioning housing, wherein the first adjustment plate and the second adjustment plate are stacked and engaged inside the positioning housing, wherein the adjustment mechanism is rotatably mounted on the outside of the positioning housing, wherein the adjustment mechanism is adjustablely connected to the first adjustment plate and the second adjustment plate, wherein the tightness of the posterior neck traction assembly can be adjusted by operating the adjustment mechanism, wherein tightening the posterior neck traction assembly can also be achieved by applying opposing forces to the first adjustment plate and the second adjustment plate.

5. The adjustable neck traction device according to claim 4, wherein the two lifting limit devices are pivotally mounted on the two shoulder support arms respectively.

6. The adjustable neck traction device according to claim 5, wherein the shoulder support arm includes a pivot limiting structure and a shoulder support body, wherein the pivot limiting structure is integrally formed on the shoulder support body to limit the pivot angle range of the shoulder support body relative to the lifting limiting device.

7. The adjustable neck traction device according to claim 6, wherein the pivoting limiting structure has a pivoting limiting structure limiting cavity, wherein the pushing limiting device is at least partially accommodated within the pivoting limiting structure limiting cavity.

8. The adjustable neck traction device according to claim 7, wherein the shoulder support arm further includes a shoulder support adjustment connection portion integrally formed with the shoulder support body, wherein the shoulder support adjustment connection portion extends in a planar manner.

9. The adjustable neck traction device according to claim 8, wherein the shoulder support body extends in an arc shape to form a contour that matches the human shoulder.

10. The adjustable neck traction device according to claim 9, wherein the shoulder support adjustment assembly includes a pair of opposing translation limiting elements, a translation control structure and a control element, wherein the two translation limiting elements are respectively fixed to the two shoulder support arms to control the translation and fixation of the two shoulder support arms; The shoulder support adjustment assembly further includes a translation direction limiting mechanism, wherein the translation direction limiting mechanism restricts the increase of the distance between the two shoulder support arms to be adjusted only by operating the shoulder support adjustment assembly, and wherein the translation direction limiting mechanism allows the decrease of the distance between the two shoulder support arms to be adjusted by applying opposing forces to the two shoulder support arms; The posterior neck traction adjustment component further includes an adjustment direction limiting mechanism, wherein the adjustment direction limiting mechanism restricts the loosening of the posterior neck traction assembly to be adjusted only by operating the adjustment mechanism, and wherein the adjustment direction limiting mechanism allows the tightening of the posterior neck traction assembly to be achieved by applying opposing forces to the first adjustment plate and the second adjustment plate. The translation control structure includes a translation control structure connecting part, a gear part, and a holding end. The translation control structure connecting part, the gear part, and the holding end are integrally formed. The translation control structure connecting part is installed on the control element, so that the translation control structure can rotate with the rotation of the control element. The translation control structure connecting part drives the gear part to rotate with the rotation of the control element, and thereby drives the translation limit element to translate. The translation direction limiting mechanism includes a first ratchet element, a first direction limiting element, and a set of first limiting claws. The first limiting claws are integrally formed on the control element. The first ratchet element includes a first ratchet carrier and a set of circumferentially arranged first ratchet teeth. The first ratchet teeth are integrally formed on the first ratchet carrier. The first ratchet teeth are arranged in a ring and form a first limiting element receiving cavity. The first direction limiting element is disposed in the first limiting element receiving cavity. The first directional limiting element includes a first central body and at least one first directional control wing integrally extending from the first central body. The first directional control wing defines a first directional engagement space. The first central body has a first central hole and at least one first drive hole. The translation control structure connecting portion passes through the first central hole. The first directional pawl is engaged in the first directional engagement space and the first drive hole, respectively. When the control element is operated clockwise, the first directional limiting element rotates with the rotation of the first directional pawl integrally formed on the control element and the translation control structure connecting portion of the translation control structure. During the rotation of the first directional limiting element, when the first directional control wing of the first directional limiting element contacts the first ratchet tooth, it is forced to move closer to the first central body and further to the next first ratchet tooth, thereby reducing the distance between the two shoulder support arms. When the control element is operated counterclockwise, the first directional pawl integrally formed on the control element applies force to the first directional control wing, causing the first directional control wing of the first directional limiting element to move closer to the first central body, thereby reducing the distance between the two shoulder support arms. When rotated counterclockwise, it avoids contact with the first ratchet tooth, thus avoiding obstruction by the first ratchet tooth, thereby achieving distance adjustment of the two shoulder support arms. When the two shoulder support arms are subjected to opposing external forces, the two translational limiting elements are forced to move closer to each other, further driving the translational control structure to rotate clockwise, thereby driving the first direction limiting element to rotate. During the rotation of the first direction limiting element, when the first direction limiting control wing of the first direction limiting element contacts the first ratchet tooth, it is forced to move closer to the first central body and further moves to the next first ratchet tooth. When the two shoulder support arms are rotated counterclockwise, the distance between the two shoulder support arms is adjusted. When opposite external forces are applied to the support arms, the two translational limiting elements tend to move away from each other, and further drive the translational control structure to rotate counterclockwise, which in turn drives the first direction limiting element to rotate counterclockwise. When the first direction limiting element rotates counterclockwise, the first direction limiting control wing of the first direction limiting element is resisted by the first ratchet tooth and cannot move counterclockwise. As it continues to be subjected to the counterclockwise rotational external force, the first direction limiting control wing tends to move away from the first central body, thus it cannot continue to move. Consequently, the two shoulder support arms cannot move away from each other under opposite external forces. The first adjusting plate further has a movable connecting hole and a first movable toothed hole. The movable connecting hole is opened at the outer end of the first adjusting plate, and the first movable toothed hole is opened laterally in the first adjusting plate. The second adjusting plate further has a detachable connector and a second movable toothed hole. The detachable connector is disposed at the outer end of the second adjusting plate, and the second movable toothed hole is opened laterally in the second adjusting plate. The adjusting mechanism is simultaneously engaged with the first movable toothed hole of the first adjusting plate and the second movable toothed hole of the second adjusting plate, so that the user can adjust the distance between the outer end of the first adjusting plate and the outer end of the second adjusting plate by rotating the adjusting mechanism, thereby achieving the effect of adjusting the relaxation and tightening of the posterior neck traction component. The adjustment mechanism includes an operating body, a gear body, and a retaining part. The first movable tooth hole and the second movable tooth hole are staggered and stacked. The gear body of the adjustment mechanism passes through the first movable tooth hole and the second movable tooth hole and is matched and coupled with the tooth hole, so that the first adjustment plate and the second adjustment plate can be further driven to move in opposite directions or in opposite directions by driving the rotation of the gear body. The gear body and the retaining part are integrally formed. The operating body includes a hand-held body and an extension part. The extension part extends integrally from the gear body axially and is connected to the hand-held body. The adjustment direction limiting mechanism includes a second ratchet element, a second direction limiting element, and a set of second limiting claws. The second limiting claws are integrally formed on the handpiece. The second ratchet element includes a second ratchet carrier and a set of circumferentially arranged second ratchet teeth. The second ratchet teeth are integrally formed on the second ratchet carrier. The second ratchet carrier is integrally formed with the positioning housing. The second ratchet teeth are arranged in a ring and form a second limiting element receiving cavity. The second direction limiting element is disposed in the second limiting element receiving cavity. The second direction limiting element includes a second central body and at least one second limiting control wing integrally extending from the second central body. The second limiting control wing defines a second limiting engagement space. The second central body has a second central hole and at least one second driving hole. The second limiting claws are engaged in the second limiting engagement space and the second driving hole, respectively. When the operating body is operated clockwise, the second direction limiting element rotates along with the rotation of the operating body. During the rotation of the second direction limiting element, when the second limiting control wing of the second direction limiting element contacts the second ratchet tooth, it is forced to move closer to the second center body and further moves to the next second ratchet tooth. This, in turn, drives the first adjusting plate and the second adjusting plate to move closer to each other through the rotation of the gear body, thereby tightening the tension of the rear neck traction assembly. When the first adjusting plate and the second adjusting plate are subjected to an external force that brings them closer together, the adjusting mechanism rotates clockwise, thereby driving the second direction limiting element to rotate. During the rotation of the second direction limiting element, when the second limiting control wing of the second direction limiting element contacts the second ratchet tooth, it is forced to move closer to the second center body and further moves to the next second ratchet tooth. When the force is applied counterclockwise, the adjustment mechanism tends to rotate counterclockwise, which in turn drives the second direction limiting element to rotate counterclockwise. When the second direction limiting element rotates counterclockwise, the second direction limiting control wing of the second direction limiting element is resisted by the second ratchet tooth and cannot move counterclockwise. Due to the continued counterclockwise rotational force, the second direction limiting control wing tends to move away from the second central body, thus preventing further movement. Consequently, the first adjustment plate and the second adjustment plate cannot move away from each other under opposite external forces. When the operating body is operated counterclockwise, the second direction limiting claw integrally formed in the operating body applies force to the second direction limiting control wing, causing the second direction limiting control wing of the second direction limiting element to move closer to the second central body. Thus, when the second direction limiting element is rotated counterclockwise, it can avoid contact with the second ratchet tooth, thereby avoiding obstruction by the second ratchet tooth, and thus realizing the loosening adjustment of the rear neck traction assembly.

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