Upper limb supporting and fixing device and rehabilitation training equipment

By designing a rotatable stop plate and locking structure in the upper limb support and fixation device, combined with a moving component, the problem of inconvenient angle adjustment in existing devices is solved, realizing lightweight and simplified angle adjustment and height adaptation to meet the upper limb needs of different users.

CN223542050UActive Publication Date: 2025-11-14SHANGHAI ZHUODAO MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202422746522.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2025-11-14
Estimated Expiration
2034-11-12

AI Technical Summary

Technical Problem

The existing upper limb support and fixation device is inconvenient to adjust in terms of angle, requiring the disengagement of the gear plate for adjustment, which makes the operation complicated and laborious.

Method used

The arm support and locking seat are rotatably connected at both ends of the stop plate. The arm support is locked by a combination of the first locking element, the second locking element and the locking hole. The arm support angle can be adjusted by pulling out the locking element alone, and the vertical height can be adjusted by moving the component.

Benefits of technology

It enables easy and simplified adjustment of the armrest angle, reduces operating steps and force requirements, improves ease of use and flexibility, and adapts to the upper limb posture of different users.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of rehabilitation training auxiliary devices, and provides an upper limb supporting and fixing device and rehabilitation training equipment. The upper limb supporting and fixing device comprises two supporting assemblies, each supporting assembly comprises an arm support, a gear plate, a first locking piece, a second locking piece and a locking seat, one end of each gear plate is rotatably connected with the corresponding arm support and provided with a plurality of first locking holes, and the first locking pieces are suitable for being connected with the arm supports and the first locking holes; the other end of the gear plate is rotatably connected with the locking seat and provided with a plurality of second locking holes, the second locking piece is connected with the locking seat and the second locking holes, and the locking seat is installed on the backup plate. The rehabilitation training equipment comprises an upper limb supporting and fixing device and a backup plate. The two ends of the gear plate are locked through the first locking piece and the first locking hole and the second locking piece and the second locking hole respectively, when the angle of the arm support needs to be adjusted, the angle of the arm support can be rotated only by pulling out the first locking piece and / or the second locking piece, so that the arm support can adapt to the upper limbs of a user, and the adjusting process is light and simple.
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Description

Technical Field

[0001] This utility model relates to the field of rehabilitation training auxiliary devices, and further to an upper limb support and fixation device and rehabilitation training equipment. Background Technology

[0002] Upper limb support and fixation devices can support the patient's upper limb so that the patient can place their arm in the support device. To meet the needs of different users, existing support devices generally have a first connecting arm and a second connecting arm. The first and second connecting arms are connected by meshing toothed discs. When adjusting the angle of the first and second connecting arms, it is necessary to first separate the meshing toothed discs, which makes the angle adjustment of the support device inconvenient. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide an upper limb support and fixation device and a rehabilitation training equipment. The two ends of the stop plate are rotatably connected to the arm support and the locking seat, respectively. The two ends of the stop plate are locked by a first locking member, a first locking hole, a second locking member, and a second locking hole. When it is necessary to adjust the angle of the arm support, simply pull out the first locking member and / or the second locking member to rotate the angle of the arm support so that the arm support can adapt to the user's upper limb. The adjustment process is convenient, simple, time-saving, and labor-saving.

[0004] To achieve the above objectives, this utility model provides an upper limb support and fixation device, including two support components, which are movably mounted on a backrest and are suitable for supporting the patient's upper limb.

[0005] The support assembly includes an arm rest, a stop plate, a first locking member, a second locking member, and a locking seat. The arm rest is rotatably connected to one end of the stop plate. One end of the stop plate is provided with a plurality of first locking holes. The first locking member is adapted to fixably connect the arm rest and the first locking holes at one end of the stop plate. The locking seat is rotatably connected to the other end of the stop plate. The other end of the stop plate is provided with a plurality of second locking holes. The second locking member is fixedly connected to the locking seat and the second locking holes at the other end of the stop plate. The locking seat is mounted on the backrest.

[0006] In some embodiments, the stop plate is oval, the first locking hole is circumferentially spaced around one end of the stop plate, and the second locking hole is circumferentially spaced around one end of the stop plate.

[0007] The arm support is rotatably connected to the center of one end of the stop plate, and the locking seat is rotatably connected to the center of the other end of the stop plate.

[0008] In some embodiments, the first locking element and / or the second locking element is a knob plunger.

[0009] In some embodiments, the arm support includes an arm support body, an arm support base plate, and a first rotating member. The arm support base plate is fixedly disposed below the arm support body. A first locking cavity is provided between the arm support base plate and the arm support body. One end of the stop plate is adapted to be inserted into the side of the first locking cavity near the locking seat and is rotatably connected to the center of one end of the stop plate and the arm support body and the arm support base plate through the first rotating member.

[0010] In some embodiments, the locking seat includes a locking body, a locking base plate, and a second rotating member. The locking base plate is fixedly disposed below the locking body, and a second locking cavity is provided between the locking base plate and the locking body. The other end of the stop plate is adapted to be inserted into the side of the second locking cavity near the arm support and is rotatably connected to the center of the other end of the stop plate and the locking body and the locking base plate through the second rotating member.

[0011] In some embodiments, the stop plate, the locking base plate, and the arm support base plate are all made of carbon fiber.

[0012] In some embodiments, the baffle plate is further provided with a hollow hole, which is located in the middle of the long axis of the baffle plate.

[0013] In some embodiments, a movable component is also included, the movable component including a stop lever and a third locking member, the stop lever being fixedly installed on the side wall of the back plate, the locking seat being slidably installed on the stop lever, the stop lever being provided with a plurality of third locking holes at intervals, and the third locking member being adapted to fixably connect the third locking holes and the locking seat.

[0014] In some embodiments, the third locking element includes a knob body, a locking shaft, and an elastic element. The bottom of the locking seat is provided with a locking groove. The locking shaft is adapted to pass through the groove of the locking groove and then connect to the knob body. The elastic element is disposed between the end of the locking shaft and the bottom of the locking groove.

[0015] According to another aspect of this application, a rehabilitation training device is further provided, including any one of the upper limb support and fixation devices and a backrest as described in the preferred embodiments above. The locking seat of the upper limb support and fixation device is movably mounted on the side wall of the backrest via a movable component, so that the vertical height of the upper limb support and fixation device is adjustable.

[0016] Compared with the prior art, the upper limb support and fixation device and rehabilitation training equipment provided by this utility model have at least one of the following beneficial effects:

[0017] 1. The two ends of the stop plate are rotatably connected to the armrest and the locking seat respectively. The two ends of the stop plate are locked by the first locking member, the first locking hole and the second locking member and the second locking hole respectively. When the armrest angle needs to be adjusted, simply pull out the first locking member and / or the second locking member to rotate the armrest angle so that the armrest can adapt to the user's upper limb. The adjustment process is convenient, simple and saves time and effort.

[0018] 2. The arm support body, arm support base plate, locking body, and locking base plate are installed vertically to form a first locking cavity and a second locking cavity, which are suitable for pressing and connecting the two ends of the stop plate, so that the two ends of the stop plate can be rotatably set in the first locking cavity and the second locking cavity, making the movement of the stop plate easier and faster, and avoiding collision between the stop plate and the arm support and the locking seat.

[0019] 3. The armrest and locking seat are set up separately, and the stop plate, locking base plate and armrest base plate are made of carbon fiber, which can reduce the overall weight of the upper limb support and fixation device, so as to make it easier to adjust the armrest angle.

[0020] 4. The locking seat can be slidably installed on the side wall of the backrest via a movable component, and the vertical height of the upper limb support and fixation device can be adjusted to meet the user's height and actual usage scenarios. Attached Figure Description

[0021] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0022] Figure 1 This is an overall diagram of the rehabilitation training equipment;

[0023] Figure 2 This is a structural diagram of an upper limb support and fixation device;

[0024] Figure 3 This is a cross-sectional view of the third locking component.

[0025] Explanation of icon numbers:

[0026] Support assembly 1, arm support 11, first locking cavity 110, arm support body 111, arm support base plate 112, first rotating component 113, binding component 114, stop plate 12, first locking hole 121, second locking hole 122, hollow hole 123, first locking component 13, second locking component 14, locking seat 15, second locking cavity 150, locking body 151, locking base plate 152, second rotating component 153, locking groove 154, moving assembly 16, stop rod 161, third locking hole 1611, third locking component 162, knob body 1621, locking shaft 1622, elastic component 1623, backing plate 2. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0028] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0029] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

[0032] refer to Figure 1 and Figure 2This utility model provides an upper limb support and fixation device, including two support components 1. The two support components 1 are movably installed on a backrest 2 and are suitable for supporting the patient's upper limb. The support component 1 includes an arm support 11, a stop plate 12, a first locking member 13, a second locking member 14, and a locking seat 15. The arm support 11 is rotatably connected to one end of the stop plate 12. One end of the stop plate 12 is provided with a plurality of first locking holes 121. The first locking member 13 is suitable for fixing the arm support 11 and the first locking holes 121 at one end of the stop plate 12. The locking seat 15 is rotatably connected to the other end of the stop plate 12. The other end of the stop plate 12 is provided with a plurality of second locking holes 122. The second locking member 14 is fixedly connected to the locking seat 15 and the second locking holes 122 at the other end of the stop plate 12. The locking seat 15 is installed on the backrest 2.

[0033] In this embodiment, the two ends of the stop plate 12 are rotatably connected to the armrest 11 and the locking seat 15, respectively. The two ends of the stop plate 12 are locked by the first locking member 13, the first locking hole 121, the second locking member 14, and the second locking hole 122, respectively. When it is necessary to adjust the angle of the armrest 11, simply pull out the first locking member 13 and / or the second locking member 14 to rotate the angle of the armrest 11 so that the armrest 11 can adapt to the user's upper limb. The adjustment process is convenient, simple, time-saving and labor-saving.

[0034] Specifically, the upper limb support and fixation device includes a pair of support components 1, which are adapted to be fixed on both sides of the backrest 2 in the width direction. (Reference) Figure 2The support assembly 1 includes an armrest 11, a stop plate 12, a first locking member 13, a second locking member 14, and a locking seat 15. The armrest 11 is adapted to support the patient's upper limb, and the armrest 11 is also provided with a binding member 114, which is adapted to bind the patient's upper limb. The binding member 114 includes, but is not limited to, a strap. The locking seat 15 is installed on the side wall of the backrest 2. Both ends of the stop plate 12 are rotatably connected to the armrest 11 and the locking seat 15. The stop plate 12 is oval, and the armrest 11 is rotatably connected to the center of one end of the stop plate 12, while the locking seat 15 is rotatably connected to the center of the other end of the stop plate 12. The first locking member 13 is adapted to fixably connect the armrest 11 and the first locking hole 121 at one end of the stop plate 12, and the second locking member 14 is adapted to fixably connect the locking seat 15 and the second locking hole 122 at the other end of the stop plate 12. The first locking hole 121 is circumferentially spaced around one end of the stop plate 12, and the second locking hole 122 is circumferentially spaced around one end of the stop plate 12. The first locking element 13 and the second locking element 14 are rotary plungers. The position of the armrest 11 can be easily adjusted by adjusting the first locking element 13 and the second locking element 14. The adjustment method of the rotary plunger is more convenient and can withstand various pushing and pulling forces in the horizontal plane. Moreover, the rotary plunger can also prevent the patient from pushing the armrest 11 to rotate, and prevent the two support components 1 from being misaligned, thus having a better locking effect. In the locked state, the front ends of the first locking element 13 and the second locking element 14 will be kept in a protruding state by the action of the built-in spring force and inserted into the first locking hole 121 and the second locking hole 122. To unlock, simply pull the first locking element 13 and the second locking element 14 out of the first locking hole 121 and the second locking hole 122 and rotate 90° while keeping them pulled out. According to the actual situation of the user's upper limb, the user's upper limb can be maintained and fixed in a variety of posture positions by adjusting the first locking element 13 and the second locking element 14.

[0035] It is worth noting that the first locking member 13 and the second locking member 14 can also be other locking components, which will not be further described here. The stop plate 12 includes, but is not limited to, an oval shape, and can also be rectangular, elliptical, etc., which will not be further limited here.

[0036] Furthermore, the arm support 11 includes an arm support body 111, an arm support base plate 112, and a first rotating member 113. The arm support base plate 112 is fixedly disposed below the arm support body 111. A first locking cavity 110 is provided between the arm support base plate 112 and the arm support body 111. One end of the stop plate 12 is adapted to be inserted into the side of the first locking cavity 110 near the locking seat 15 and is rotatably connected to the center of one end of the stop plate 12 and the arm support body 111 and the arm support base plate 112 through the first rotating member 113. The locking seat 15 includes a locking body 151, a locking base plate 152, and a second rotating member 153. The locking base plate 152 is fixedly disposed below the locking body 151. A second locking cavity 150 is provided between the locking base plate 152 and the locking body 151. The other end of the stop plate 12 is adapted to be inserted into the side of the second locking cavity 150 near the arm support 11 and is rotatably connected to the center of the other end of the stop plate 12 and the locking body 151 and the locking base plate 152 through the second rotating member 153. In this embodiment, the arm support body 111, the arm support base plate 112, the locking body 151, and the locking base plate 152 are installed vertically to form the first locking cavity 110 and the second locking cavity 150 and are adapted to press and connect the two ends of the stop plate 12, so that the two ends of the stop plate 12 can be rotatably disposed in the first locking cavity 110 and the second locking cavity 150, making the movement of the stop plate 12 easier and faster and avoiding collisions between the stop plate 12 and the arm support 11 and the locking seat 15.

[0037] Specifically, the arm support 11 is divided into an arm support body 111 and an arm support base plate 112. One end of the arm support base plate 112 is fixedly connected to the arm support body 111, and a first locking cavity 110 is provided between the other end of the arm support base plate 112 and the arm support body 111. One end of the stop plate 12 is adapted to be inserted into the first locking cavity 110. The bottom of the first locking cavity 110 is arc-shaped and matches the end of one end of the stop plate 12. The bottom of the first locking cavity 110 and the end of the stop plate 12 never contact each other. A first rotating member 113 connects the arm support body 111, the stop plate 12, and the arm support base plate 112. The first rotating member 113 includes, but is not limited to, a pin, a pivot, a hinge, etc. The connection between the first rotating member 113 and the stop plate 12 is located at the center of one end of the stop plate 12, which can effectively avoid mutual interference between the first rotating member 113 and the first locking member 13, making the structure more reasonable.

[0038] The locking base 15 is also divided into a locking body 151 and a locking base plate 152. One end of the locking base plate 152 is fixedly connected to the locking body 151, and a second locking cavity 150 is provided between the other end of the locking base plate 152 and the locking body 151. The other end of the stop plate 12 is adapted to be inserted into the second locking cavity 150. The bottom of the second locking cavity 150 is arc-shaped and matches the end of the other end of the stop plate 12. The bottom of the second locking cavity 150 and the other end of the stop plate 12 never contact each other. The second rotating member 153 connects the locking body 151, the stop plate 12, and the locking base plate. The second rotating member 153 includes, but is not limited to, pins, pivots, hinges, etc. The connection between the second rotating member 153 and the stop plate 12 is located at the center of the other end of the stop plate 12, which can effectively avoid mutual interference between the second rotating member 153 and the second locking member 14, making the structure more reasonable.

[0039] When the angle of the armrest 11 needs to be adjusted, simply pull out the first locking member 13 and the second locking member 14 to rotate the armrest 11. Rotate the armrest 11 around the first rotating member 113 and the stop plate 12 around the second rotating member 153 to complete the angle adjustment of the armrest 11, so that the armrest 11 can adapt to the user's upper limb. The adjustment process is convenient, simple, time-saving, and labor-saving. After the armrest 11 is adjusted, simply insert the first rotating member 113 and the second rotating member 153. Preferably, the stop plate 12, the locking base plate 152, and the armrest base plate 112 are all made of carbon fiber. In this embodiment, the armrest 11 and the locking seat 15 are set separately, and the stop plate 12, the locking base plate 152, and the armrest base plate 112 are made of carbon fiber, which can reduce the overall weight of the upper limb support and fixation device, so as to make it easier to adjust the angle of the armrest 11. Specifically, the stop plate 12 is also provided with a hollow hole 123, which is located in the middle of the long axis of the stop plate 12 and is positioned between the first locking member 13 and the second locking member 14. The hollow hole in the middle of the stop plate 12 can further reduce the weight of the stop plate 12. It is worth noting that the hollow hole 123 needs to be provided while ensuring the structural strength of the stop plate 12 to prevent accidental breakage of the stop plate 12. Preferably, the inner support sheet metal of the arm support 11 is also made of lightweight aluminum alloy, which significantly reduces the overall weight of the arm support 11 and makes it lighter. The stop plate 12, the locking base plate 152 and the arm support base plate 112 can also be made of other lightweight materials, such as high-strength steel, aluminum alloy, titanium alloy, magnesium alloy, engineering plastics, carbon fiber composite materials, etc., which will not be further described in this application.

[0040] Furthermore, it also includes a moving component 16, which includes a stop lever 161 and a third locking member 162. The stop lever 161 is fixedly installed on the side wall of the backing plate 2, and the locking seat 15 is slidably installed on the stop lever 161. A plurality of third locking holes 1611 are spaced apart on the stop lever 161, and the third locking member 162 is adapted to fixably connect the third locking holes 1611 and the locking seat 15.

[0041] In this embodiment, the locking seat 15 is slidably mounted on the side wall of the backrest 2 via the moving component 16, which can adjust the vertical height of the upper limb support and fixing device to meet the user's height and actual usage scenarios.

[0042] Specifically, refer to Figure 2 and Figure 3 The moving component 16 includes a stop lever 161 and a third locking member 162. The stop lever 161 is fixedly installed on the side wall of the backing plate 2 and extends along the length of the backing plate 2. The bottom of the locking body of the locking seat 15 is provided with a sliding groove, in which the stop lever 161 is adapted to be installed, so that the locking seat 15 is slidably installed on the stop lever 161. A plurality of third locking holes 1611 are spaced apart on the stop lever 161. The third locking member 162 is adapted to fixably connect the third locking holes 1611 and the locking seat 15. The third locking member 162 includes, but is not limited to, a locking knob, and also includes a pin, a knob plunger, a bolt, etc. Preferably, the third locking element 162 includes a knob body 1621, a locking shaft 1622, and an elastic element 1623. The bottom of the locking seat 15 is provided with a locking groove 154. The locking shaft 1622 is adapted to pass through the groove of the locking groove 154 and connect to the knob body 1621. The elastic element 1623 is disposed between the end of the locking shaft 1622 and the bottom of the groove of the locking groove 154. The elastic element 1623 is a spring. This third locking element 162 offers more convenient adjustment and better fastening. It is worth noting that the stop lever 161 is provided with a third locking hole 1611 with multiple adjustable positions. Depending on the user's height and actual usage scenario, the support assembly 1 of the left arm and the support assembly 1 of the right arm can be fixedly connected to the stop lever 161 via the third locking element 162. Preferably, to prevent accidental separation of the locking seat 15 and the stop lever 161, a slider is also provided on the locking seat 15, and a dovetail groove is provided on the stop lever 161. The slider of the locking seat 15 is slidably installed in the dovetail groove of the stop lever 161. The slider and the groove horizontally limit the locking seat 15, preventing accidental separation of the locking seat 15 and the stop lever 161 and increasing its reliability. Of course, there are various ways to slide and prevent the locking seat 15 and the stop lever 161 from falling off, which will not be described further in this application.

[0043] Further, refer to Figure 1This application provides a rehabilitation training device, including an upper limb support and fixation device and a backrest 2 as described in any of the above embodiments. The locking seat 15 of the upper limb support and fixation device is movably installed on the side wall of the backrest 2 via a moving component 16, so that the vertical height of the upper limb support and fixation device can be adjusted.

[0044] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An upper limb support and fixation device, characterized in that, It includes two support components, which are movably mounted on the backrest and adapted to support the patient's upper limbs; The support assembly includes an arm rest, a stop plate, a first locking member, a second locking member, and a locking seat. The arm rest is rotatably connected to one end of the stop plate. One end of the stop plate is provided with a plurality of first locking holes. The first locking member is adapted to fixably connect the arm rest and the first locking holes at one end of the stop plate. The locking seat is rotatably connected to the other end of the stop plate. The other end of the stop plate is provided with a plurality of second locking holes. The second locking member is fixedly connected to the locking seat and the second locking holes at the other end of the stop plate. The locking seat is mounted on the backrest.

2. The upper limb support and fixation device according to claim 1, characterized in that, The stop plate is oval in shape, and the first locking hole is circumferentially spaced around one end of the stop plate, and the second locking hole is circumferentially spaced around one end of the stop plate. The arm support is rotatably connected to the center of one end of the stop plate, and the locking seat is rotatably connected to the center of the other end of the stop plate.

3. The upper limb support and fixation device according to claim 2, characterized in that, The first locking element and / or the second locking element is a knob plunger.

4. The upper limb support and fixation device according to claim 2, characterized in that, The arm support includes an arm support body, an arm support base plate, and a first rotating component. The arm support base plate is fixedly disposed below the arm support body. A first locking cavity is provided between the arm support base plate and the arm support body. One end of the stop plate is adapted to be inserted into the side of the first locking cavity near the locking seat and is rotatably connected to the center of one end of the stop plate and the arm support body and the arm support base plate through the first rotating component.

5. The upper limb support and fixation device according to claim 4, characterized in that, The locking seat includes a locking body, a locking base plate, and a second rotating component. The locking base plate is fixedly disposed below the locking body. A second locking cavity is provided between the locking base plate and the locking body. The other end of the stop plate is adapted to be inserted into the side of the second locking cavity near the arm support and is rotatably connected to the center of the other end of the stop plate and the locking body and the locking base plate through the second rotating component.

6. The upper limb support and fixation device according to claim 5, characterized in that, The gear shift plate, the locking base plate, and the arm support base plate are all made of carbon fiber.

7. The upper limb support and fixation device according to claim 6, characterized in that, The stop plate is also provided with a hollow hole, which is located in the middle of the long axis of the stop plate.

8. An upper limb support and fixation device according to any one of claims 1-7, characterized in that, It also includes a moving component, which includes a stop lever and a third locking member. The stop lever is fixedly installed on the side wall of the back plate, and the locking seat is slidably installed on the stop lever. A plurality of third locking holes are spaced apart on the stop lever, and the third locking member is adapted to fixably connect the third locking holes and the locking seat.

9. The upper limb support and fixation device according to claim 8, characterized in that, The third locking element includes a knob body, a locking shaft, and an elastic element. The bottom of the locking seat is provided with a locking groove. The locking shaft is adapted to pass through the groove of the locking groove and then connect to the knob body. The elastic element is disposed between the end of the locking shaft and the bottom of the locking groove.

10. A rehabilitation training device, characterized in that, The device includes the upper limb support and fixation device and the backrest as described in any one of claims 1-9, wherein the locking seat of the upper limb support and fixation device is movably mounted on the side wall of the backrest via a movable component, so that the vertical height of the upper limb support and fixation device is adjustable.