Hand stretching device
By designing a hand stretching device including a fixing component and a winding component, the problem of inflexible finger tensile strength control in the prior art is solved, flexible adjustment of finger tensile strength is achieved, and the flexibility of using the device is improved.
Patent Information
- Application Number
- CN202420587569.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The existing hand stretching device is not flexible enough to control the tensile strength of the fingers and cannot meet the stretched needs for greater strength stretching.
A hand stretching device including a fixing assembly and a winding assembly is designed. The fixing assembly includes a palm fixing assembly and a finger sleeve, and the winding assembly is connected by a base, a pulling wire and a winding piece. The rotation of the winding piece wraps the pulling wire, and the pulling wire pulls the finger sleeve to stretch the finger.
By rotating the winding piece to shrink the pulling line, flexible control of the tensile strength of the fingers can be adjusted without changing the finger segments, which improves the flexibility of the hand stretching device.
Smart Images
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Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of medical devices, and in particular, relates to a hand stretching device. Background Art
[0002] Many groups of people need to stretch their fingers. For example, surgeons who often use their hands need to stretch their fingers to relax their muscles to ensure the accuracy of the operation during surgery; teenagers who do sports also need to stretch their fingers to relax their muscles, but at the same time, they can also promote finger development and improve athletic ability by stretching their fingers. Fingers are relatively delicate and fragile parts of the human body. Human finger bones are usually only as strong as wooden chopsticks, and the bones of the human palm are numerous and complex. Therefore, stretching fingers often requires the assistance of professionals. In order to facilitate the operation of professionals, a hand stretching device will be used for assistance. The existing hand stretching device is not flexible enough to control the finger stretching strength. For example, in the prior art, a finger splitting block is used to open the fingers. However, the size of the finger splitting block cannot be adjusted, so if the finger needs to be opened more or less, the finger splitting block needs to be replaced. In the training of finger stretching, the person being stretched will gradually need a stronger stretching. In order to better meet the needs of the person being stretched for a stronger stretching, a hand stretching device with more flexible control of the finger stretching strength is needed. Utility Model Content
[0003] The embodiment of the present application provides a hand stretching device to solve the problem that the existing hand stretching device is not flexible enough in controlling the stretching strength of fingers.
[0004] The present application provides a hand stretching device, comprising:
[0005] A fixing component, comprising a palm fixing component and a finger sleeve, wherein the palm fixing component is used to be fixed to the palm, and the finger sleeve is sleeved on the finger;
[0006] A winding assembly, comprising a base, a traction line and a winding member, wherein the base is fixedly connected to the palm fixing assembly, the winding member is rotatably connected to the base, one end of the traction line is wound around the winding member, and the other end of the traction line is fixed to the finger sleeve;
[0007] The winding member is rotated to wind the traction line and pull the finger sleeve, so that the fingers are spread apart and / or rotated toward the back of the hand.
[0008] In some embodiments, a sub-velcro is provided on one end surface of the finger sleeve, and a main-velcro is provided on the other end surface of the finger sleeve; the sub-velcro and the main-velcro can be bonded to each other to form a sleeve space for sleeve fingers.
[0009] In some embodiments, a protective layer made of a flexible material is provided on the side of the finger sleeve opposite to the finger.
[0010] In some embodiments, the fixing assembly further includes a lead arm, the lead arm extending in the direction of the fingers opening toward each other, a plurality of lead holes being provided on the lead arm, the plurality of lead holes being distributed on both sides of the palm along the direction of the fingers opening toward each other, the traction wire being passed through the lead holes, and the ends of the plurality of traction wires passing through the plurality of lead holes away from the finger cuff are all wound around the same winding member.
[0011] In some embodiments, the fixing assembly further includes a fixing arm, which extends in the direction in which the fingers are spread apart from each other. There are multiple winding assemblies, and the bases of the multiple winding assemblies are respectively fixed on both sides of the fixing arm on the palm along the direction in which the fingers are spread apart from each other.
[0012] In some embodiments, the fixing assembly further comprises a fixing base, and the fixing base is used to be arranged on a side close to the back of the hand, and at least one winding assembly is arranged on the fixing base.
[0013] In some embodiments, along the length direction of the finger, one end of the finger sleeve is closed for sleeve on the fingertip; or
[0014] The finger sleeve is used for sleeved on the middle part or the root part of the finger.
[0015] In some embodiments, the winding assembly also includes a limiting mechanism; the limiting mechanism is arranged on the base and the winding member; the winding member can rotate along a first direction relative to the base; when the winding member rotates relative to the base in a direction opposite to the first direction, the limiting mechanism limits the rotation of the winding member.
[0016] In some embodiments, the limiting mechanism includes a ratchet and a pawl; a pawl is provided on the base, and a ratchet is provided on the winding member, and the ratchet cooperates with the pawl so that when the winding member rotates relative to the base in the opposite direction to the first direction, the pawl pushes the ratchet teeth on the ratchet wheel to limit the rotation of the winding member.
[0017] In some embodiments, the palm fixing component is mounted on the palm and / or wrist and / or arm to keep it relatively fixed with the palm; or
[0018] The palm fixing component is configured as a fixing platform, and a palm placing position is arranged on the fixing platform. When the palm is placed on the palm placing position, the fixing platform and the palm remain relatively fixed.
[0019] The hand stretching device provided in the embodiment of the present application makes the control of the tensile strength of the finger more flexible by rotating the winding piece to shrink the traction line and then stretch the finger. Specifically, the finger sleeve is arranged on the finger, so that when the finger sleeve is pulled, the finger will be pulled. The winding assembly is arranged on the palm fixing assembly, so the winding assembly also maintains a fixed relative position relationship with the palm. In this way, when the winding piece in the winding assembly rotates and shrinks the traction line, the traction line can pull the finger sleeve to pull the finger and produce a stretching effect. However, the degree of contraction of the traction line is completely determined by the rotation angle (or number of turns) of the winding piece. When a greater tensile strength is needed, the winding piece can be rotated at a greater angle to allow more traction lines to be wound around the winding piece, thereby stretching the finger to a greater extent. In this process, the change in tensile strength can be achieved without replacing components such as finger-dividing blocks, thereby improving the flexibility of the hand stretching device in controlling the tensile strength of the finger. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
[0021] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.
[0022] Figure 1 A schematic structural diagram of a first embodiment of a hand stretching device provided in an embodiment of the present application;
[0023] Figure 2 A schematic diagram of the structure from a first viewing angle of a second embodiment of the hand stretching device provided in an embodiment of the present application;
[0024] Figure 3 for Figure 2 A schematic diagram of the structure of the second viewing angle of the embodiment;
[0025] Figure 4 A schematic structural diagram of a third embodiment of the hand stretching device provided in an embodiment of the present application;
[0026] Figure 5 A schematic structural diagram of a fourth embodiment of a hand stretching device provided in an embodiment of the present application;
[0027] Figure 6 for Figure 1 A schematic structural diagram of the winding assembly of the embodiment from a first perspective;
[0028] Figure 7 for Figure 6 A schematic structural diagram of the winding assembly of the embodiment in which the base is removed;
[0029] Figure 8 for Figure 1 A schematic structural diagram of the winding assembly of the embodiment from a second viewing angle;
[0030] Fig. 9 for Figure 8 A cross-sectional view of the winding assembly of the embodiment along the AA direction;
[0031] Fig.10 for Figure 1 A schematic structural diagram of the winding assembly of the embodiment from a third viewing angle;
[0032] Fig.11 for Fig.10 A cross-sectional view of the winding assembly of the embodiment along the CC direction.
[0033] Description of Figure Numbers:
[0034] Label name Label name 11 Palm fixing assembly 30 Fixed arm 12 Finger cot 40 Fixed seat 21 Base 51 ratchet 22 Pull Line 52 pawl 23 Winding parts 521 Second in Command 231 First in command 111 Fixed platform 233 Columnar structure DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0036] The embodiment of the present application provides a hand stretching device to solve the problem that the existing hand stretching device is not flexible enough in controlling the stretching strength of fingers. The device will be described below with reference to the accompanying drawings.
[0037] The hand stretching device provided in the embodiment of the present application makes the control of the tensile strength of the finger more flexible by rotating the winding piece to shrink the traction line and then stretch the finger. Specifically, the finger sleeve can be set on the finger, so that when the finger sleeve is pulled, the finger will be pulled. The winding assembly is arranged on the palm fixing assembly, so the winding assembly is also fixed in relative position with the palm. In this way, when the winding piece in the winding assembly rotates and shrinks the traction line, the traction line can pull the finger sleeve to pull the finger and produce a stretching effect. However, the degree of contraction of the traction line is completely determined by the rotation angle (or number of turns) of the winding piece. When a greater tensile strength is needed, the winding piece can be rotated at a greater angle to allow more traction lines to be wound around the winding piece, thereby stretching the finger to a greater extent. In this process, the change of tensile strength can be achieved without replacing components such as finger-dividing blocks, thereby improving the flexibility of the hand stretching device in controlling the tensile strength of the finger.
[0038] The hand stretching device provided in the embodiment of the present application can make the fingers open to each other, can make the fingers rotate toward the back of the hand, or can make the fingers open to each other and rotate toward the back of the hand at the same time. The hand stretching device provided in the embodiment of the present application can move only one finger, or can move multiple fingers at the same time.
[0039] Next, the hand stretching device provided in the embodiment of the present application is described in detail.
[0040] refer to Figure 1 , an embodiment of the present application provides a hand stretching device, which includes a fixing component and a winding component. The fixing component includes a palm fixing component 11 and a finger sleeve 12, wherein the palm fixing component 11 is used to be fixed to the palm, and the finger sleeve 12 is sleeved on the finger. The winding component includes a base 21, a traction wire 22 and a winding member 23. The base 21 is fixedly connected to the palm fixing component 11, specifically by bonding, screwing, riveting, etc., so that the base 21 also maintains a fixed position relationship with the palm. The winding member 23 is rotatably connected to the base 21. One end of the traction wire 22 is wound on the winding member 23, and the other end of the traction wire 22 is fixed on the finger sleeve 12. Among them, the winding member 23 rotates to wrap around the traction wire 22 and pull the finger sleeve 12, so that the fingers are opened to each other (please refer to Figure 1 , Figure 1 The five fingers are spread out mutually under the traction of the traction line 22).
[0041] like Figure 1 As shown, when the winding member 23 disposed on the fixed arm 30 is rotated, the pulling wire 22 can be retracted so that the fingers are spread apart. Figure 2 As shown, when the winding member 23 disposed on the fixing seat 40 is rotated, the fingers can be rotated toward the back of the hand. However, whether the fingers are spread apart or rotated toward the back of the hand, it can be achieved by simply rotating the winding member 23. When the fingers need to be moved further, it is only necessary to further rotate the winding member 23 without replacing components such as the finger separation block. The adjustment is convenient and the flexibility is high, which greatly improves the flexibility of the hand stretching device in controlling the finger stretching strength.
[0042] refer to Figure 6The end of the winding member 23 away from the base 21 may be provided with a first rotating handle 231 to facilitate the user's rotation, and the other end of the winding member 23 may be provided with a ratchet 51 to cooperate with the pawl 52, or a rotating wheel to cooperate with the roller in the one-way clutch structure. In the middle of the winding member 23, there may be a columnar structure 233 for the traction line 22 to be wound. For example, in some embodiments, a through hole may be opened in the columnar structure along its radial direction for the traction line 22 to pass through and be tied to the columnar structure; in some embodiments, a threaded hole may also be provided on the columnar structure, and a screw may be used to press one end of the traction line 22 into the threaded hole to fix the traction line 22; or in some embodiments, the traction line 22 is wound around the columnar structure only by the friction between the traction line 22 and the columnar structure (similar to the winding method of the pegs and strings of a violin). There are many ways to connect the traction wire 22 and the winding member 23. As long as more traction wires 22 can be wound around the winding member 23 when the winding member 23 rotates, the winding member 23 can be contracted. Other fixing methods will not be described in detail. The traction wire 22 can be made of metal or plastic.
[0043] refer to Figure 1 In some embodiments, a child Velcro is provided on one end surface of the finger sleeve 12, and a mother Velcro is provided on the other end surface of the finger sleeve 12; the child Velcro and the mother Velcro can be bonded to each other to form a sleeve space for sleeve fingers. The Velcro adhesive position is movable, so the circumference of the sleeve space for sleeve fingers can be adjusted, which is convenient for adapting to fingers of different thicknesses. In addition, the Velcro also facilitates the disassembly of the finger sleeve 12, making it convenient for users to remove the finger sleeve 12.
[0044] refer to Figure 1 In some embodiments, a protective layer made of a flexible material is provided on the side of the finger sleeve 12 opposite to the finger. The flexible material may be silicone, soft rubber, sponge, etc. The protective layer can prevent the finger sleeve 12 from strangling the finger, and can also provide additional friction to improve the firmness of the fixing relationship between the finger sleeve 12 and the finger, and avoid the loss of the stretching effect due to the slippage of the finger sleeve 12.
[0045] refer to Figure 1In some embodiments, the fixing assembly further includes a lead arm (not shown in the figure), the lead arm extends in the direction of the fingers opening each other, and a plurality of lead holes (not shown in the figure) are provided on the lead arm, and the plurality of lead holes are distributed on both sides of the palm along the direction of the fingers opening each other, and a traction wire 22 is passed through the lead hole, and the ends of the plurality of traction wires 22 passing through the plurality of lead holes away from the finger sleeve 12 are all wound on the same winding member 23. In this way, the plurality of traction wires 22 can be controlled by the same winding member 23, and the plurality of traction wires 22 will shrink when the winding member 23 rotates, which is convenient for the user to operate. The lead hole plays a role in controlling the traction direction, that is, when the winding member 23 rotates, the traction wire 22 shrinks, and the traction wire 22 will lead the finger sleeve 12 to the direction close to the lead hole, so as to achieve the effect of making the fingers open each other. Figure 1 The middle fixed arm 30 can be used as a lead arm. Figure 1 The five winding assemblies shown in the figure are replaced by lead holes, and a new winding assembly arranged in the middle of the lead arm is added to control multiple pulling wires 22.
[0046] refer to Figure 1 In some embodiments, the fixing assembly further includes a fixing arm 30, the fixing arm 30 extends in the direction of the fingers opening each other, and there are multiple winding assemblies, and the bases 21 of the multiple winding assemblies are respectively fixed on both sides of the fixing arm 30 on the palm along the direction of the fingers opening each other. Such a winding assembly controls a traction line 22, and a traction line 22 can be connected to a finger sleeve 12; in this way, the finger sleeve 12, the traction line 22 and the winding assembly correspond to each other and do not affect each other, that is, rotating a winding member 23 will only affect one finger sleeve 12. In this way, the tensile strength of each finger can be independently controlled, making the use of the hand stretching device more flexible.
[0047] Furthermore, in some embodiments, at least one winding assembly may be provided on the side of the fixed arm 30 close to the back of the hand, which may be specifically as follows: Figure 2 As shown, when the winding member 23 on the fixing seat 40 is rotated, the finger can be pulled to rotate toward the back of the hand to stretch the finger (please refer to Figure 3 , Figure 3 The middle finger in the hand rotates toward the back of the hand under the traction of the traction wire 22). Only one winding assembly can be set on the fixed seat 40. The winding member 23 of the winding assembly is connected to five traction wires 22 at the same time, and the five traction wires 22 are respectively connected to the finger sleeves 12 corresponding to the five fingers. In this way, rotating one winding member 23 can pull five fingers, which is convenient for operation. However, it can also be as follows Figure 2 As shown, five winding assemblies are provided to respectively pull five fingers, so that the tensile strength of each finger can be controlled, thereby improving the flexibility of using the hand stretching device.
[0048] In other embodiments, reference Figure 4The fixing assembly may further include a fixing seat 40, which is used to be arranged on a side close to the back of the hand, and at least one winding assembly is arranged on the fixing seat 40. The fixing seat 40 is arranged on a side close to the back of the hand, so that Figure 4 As shown, when the winding member 23 on the fixing seat 40 is rotated, the finger can be pulled to rotate toward the back of the hand (the rotation direction of the finger can be referred to Figure 3 The fixing seat 40 may be provided with only one winding assembly. The winding member 23 of the winding assembly is simultaneously connected to five pulling wires 22, and the five pulling wires 22 are respectively connected to the finger sleeves 12 corresponding to the five fingers. In this way, rotating one winding member 23 can pull five fingers, which is convenient for operation. However, it is also possible to Figure 4 As shown, five winding components are provided to pull five fingers respectively, so that the tensile strength of each finger can be controlled, and the flexibility of using the hand stretching device is improved. Thus, the winding component 23 can be rotated to wind the traction line 22 and pull the finger sleeve 12, and at the same time, the fingers are opened to each other (please refer to Figure 1 and Figure 4 The finger status in Figure 1 and Figure 4 The fingers in the hand are opened to each other under the traction of the traction line 22); or the winding member 23 is rotated to wrap around the traction line 22 and pull the finger sleeve 12, so that the fingers rotate toward the back of the hand (please refer to Figure 3 The finger status in Figure 3 or the winding member 23 is rotated to wind the traction line 22 and pull the finger sleeve 12, while the fingers are opened and rotated toward the back of the hand.
[0049] refer to Figure 1 In some embodiments, one end of the finger sleeve 12 is closed along the length direction of the finger, and is used to be mounted on the fingertip. In this way, the finger sleeve 12 is at the end of the finger away from the palm, which makes it easier to apply a greater tensile force to the finger, thereby facilitating the improvement of tensile strength. In addition, each knuckle of the finger can be stretched, thereby improving the sufficiency of stretching. In some embodiments, the finger sleeve 12 can be used to be mounted on the middle or root of the finger. In this way, the finger sleeve 12 is not easy to slip off, and the fixing effect is better.
[0050] refer to Figure 8 and Fig. 9In some embodiments, the winding assembly further includes a limiting mechanism. The limiting mechanism is disposed on the base 21 and the winding member 23. The winding member 23 can rotate relative to the base 21 in a first direction. When the winding member 23 rotates relative to the base 21 in a direction opposite to the first direction, the limiting mechanism limits the rotation of the winding member 23. When the winding member 23 rotates to contract the traction line 22, a pulling force is generated on the finger. In this way, the finger will also give a pulling force to the traction line 22, which in turn can cause the winding member 23 to rotate, so that the traction line 22 is relaxed. Of course, in some embodiments, the user can apply force to prevent the winding member 23 from rotating under the action of the traction line 22. However, in other embodiments, a limiting mechanism is provided so that the winding member 23 is free when rotating in the first direction. The user can rotate the winding member 23 in the first direction to contract the traction line 22. When the user releases the winding member 23, the winding member 23 will inevitably rotate in the opposite direction of the first direction under the action of the traction line 22, and the limiting mechanism prevents this movement, so that the traction line 22 maintains the pulling force on the finger. It is convenient for the user to use. The limiting mechanism can be a one-way clutch set on the winding member 23 and the base 21. Fig.11 The part marked as ratchet 51 can be a rotating wheel (without gear teeth or ratchet teeth on the circumference, and is smooth); and a one-way clutch roller and other structures are provided on the base 21. The roller cooperates with the rotating wheel to realize the one-way rotation of the rotating wheel, thereby ensuring that the winding member 23 can rotate freely in the first direction, while the rotation in the opposite direction will be blocked.
[0051] refer to Figure 7 , Figure 8 , Fig.10 and Fig.11 In some embodiments, the limiting mechanism includes a ratchet 51 and a pawl 52. The base 21 is provided with a pawl 52, and the winding member 23 is provided with a ratchet 51. The ratchet 51 cooperates with the pawl 52, so that when the winding member 23 rotates relative to the base 21 in the opposite first direction, the pawl 52 pushes against the ratchet teeth on the ratchet 51 to limit the rotation of the winding member 23. Fig. 9 is a cross section of the winding assembly along the axial direction of the winding member 23; Fig.11 is the cross section of the winding assembly perpendicular to the axial direction of the winding element 23. Fig. 9 and Fig.11 It can be seen from the figure that when the ratchet 51 rotates counterclockwise, the pawl 52 will hinder the rotation of the ratchet 51. When the ratchet 51 rotates clockwise, the ratchet teeth will push away the pawl 52 and will not be hindered by the pawl 52. Figure 3 and Figure 5It can be seen that the pawl 52 has a second handle 521 extending out of the base 21. The pawl 52 can be dragged by dragging the second handle 521, so that the pawl 52 is no longer matched with the ratchet 51, so that the ratchet 51 can rotate freely; at this time, the traction line 22 can drive the winding member 23 to rotate, and the pulling of the finger can be released. When the user completes the pulling training, the second handle 521 can be used to stop the training. However, the training can also be stopped by directly taking off the finger sleeve 12.
[0052] refer to Figure 1 In some embodiments, the palm fixing component 11 is mounted on the palm and / or wrist and / or arm to keep it relatively fixed with the palm. Figure 1 In the embodiment, the palm fixing assembly 11 is in the shape of a half-finger glove. However, the palm fixing assembly 11 may also be in the shape of a full-finger glove, a fingerless glove, or a strap that is worn on the wrist of the user. This makes it convenient for the user to carry the hand stretching device and use the hand stretching device in more occasions.
[0053] In some embodiments, please combine Figure 5 The palm fixing component 11 can also be configured as a fixing platform 111, and a palm placement position is set on the fixing platform. When the palm is placed on the palm placement position, the fixing platform and the palm remain relatively fixed. The palm placement position can also be as Figure 1 The half-finger glove shown is fixed to a fixing platform, so that when the glove is put into the half-finger glove, the palm is fixed to the fixing platform. The fixing platform can improve the fixing effect and make the stretching more accurate. The fixing platform can be placed on a fixed object such as the ground or a table. The palm placement position can also be a clamp ring around the wrist.
[0054] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0055] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.
[0056] The hand stretching device provided in the embodiment of the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A hand stretching device, characterized in that: include: A fixing component, comprising a palm fixing component and a finger sleeve, wherein the palm fixing component is used to be fixed to the palm, and the finger sleeve is sleeved on the finger; A winding assembly, comprising a base, a traction line and a winding member, wherein the base is fixedly connected to the palm fixing assembly, the winding member is rotatably connected to the base, one end of the traction line is wound around the winding member, and the other end of the traction line is fixed to the finger sleeve; The winding member is rotated to wind the traction line and pull the finger sleeve, so that the fingers are spread apart and / or rotated toward the back of the hand.
2. The hand stretching device according to claim 1, characterized in that: A sub-velcro is arranged on one end surface of the finger sleeve, and a main-velcro is arranged on the other end surface of the finger sleeve; the sub-velcro and the main-velcro can be bonded to each other to form a sleeve space for sleeve fingers.
3. The hand stretching device according to claim 1, characterized in that: A protective layer made of flexible material is arranged on the side of the finger sleeve opposite to the finger.
4. The hand stretching device according to claim 1, characterized in that: The fixing assembly also includes a lead arm, which extends in the direction of the fingers opening apart. The lead arm is provided with a plurality of lead holes, which are distributed on both sides of the palm along the direction of the fingers opening apart. The traction wires are passed through the lead holes, and the ends of the traction wires passing through the lead holes away from the finger cuffs are all wound around the same winding member.
5. The hand stretching device according to claim 1, characterized in that: The fixing assembly also includes a fixing arm, which extends along the direction in which the fingers are spread apart. There are multiple winding assemblies, and the bases of the multiple winding assemblies are respectively fixed on both sides of the fixing arm on the palm along the direction in which the fingers are spread apart.
6. The hand stretching device according to claim 4 or 5, characterized in that: The fixing assembly further comprises a fixing seat, and the fixing seat is used to be arranged on a side close to the back of the hand, and at least one winding assembly is arranged on the fixing seat.
7. The hand stretching device according to claim 1, characterized in that: Along the length direction of the finger, one end of the finger sleeve is closed and is used to be sleeved on the fingertip; or The finger sleeve is used for sleeved on the middle part or the root part of the finger.
8. The hand stretching device according to claim 1, characterized in that: The winding assembly also includes a limiting mechanism; the limiting mechanism is arranged on the base and the winding member; the winding member can rotate along a first direction relative to the base; when the winding member rotates relative to the base in a direction opposite to the first direction, the limiting mechanism limits the rotation of the winding member.
9. The hand stretching device according to claim 8, characterized in that: The limiting mechanism includes a ratchet and a pawl; a pawl is provided on the base, and a ratchet is provided on the winding member, and the ratchet cooperates with the pawl so that when the winding member rotates relative to the base in the opposite direction to the first direction, the pawl pushes the ratchet teeth on the ratchet wheel to limit the rotation of the winding member.
10. The hand stretching device according to claim 1, characterized in that: The palm fixing component is mounted on the palm and / or wrist and / or arm to keep relatively fixed with the palm; or The palm fixing component is configured as a fixing platform, and a palm placement position is arranged on the fixing platform. When the palm is placed on the palm placement position, the fixing platform and the palm remain relatively fixed. 。