Knob-type thumb protector

Abstract

The present application provides a knob-type thumb protector, comprising: a protector main body, wherein a sleeve hole for a thumb to pass through is formed, so that the protector main body can be sleeved at a root position of the thumb to form a structure for supporting the thumb; a first connecting piece, one end of which is connected to one side of the protector main body, and the other end of which is provided with a connecting slot; a second connecting piece, one end of which is connected to the other side of the protector main body, and the other end of which can pass through the connecting slot to connect to the first connecting piece, so as to cooperate with the first connecting piece to form a ring sleeve wrapping the palm; and a knob adjusting piece, comprising a knob assembly and an adjusting cord telescopically and adjustably connected to the knob assembly, wherein the knob assembly is installed on the protector main body, and one end of the adjusting cord is connected to the end of the second connecting piece that passes through the connecting slot, so that the wearing tightness of the first connecting piece and the second connecting piece can be adjusted by means of rotating the knob assembly. The knob-type thumb protector of the present application can improve the convenience of wearing and adjustment, as well as the comfort during use.

Description

Thumb guard with knob Technical Field

[0001] This application relates to the field of medical assistive device technology, and in particular to a knob-type thumb brace. Background Technology

[0002] Tenosynovitis is a common inflammation caused by muscle strain in joint areas. It results from improper use of the joint or excessive external force damaging the muscles. Tenosynovitis can occur not only in the wrist joint but also in the thumb joint, especially with the rise of mobile games. Improper use of the thumb to press the screen forcefully for extended periods often leads to thumb pain, and in severe cases, even thumb tenosynovitis. To alleviate thumb weakness, pain, or soreness, thumb braces are available on the market. Wearing them can prevent or slow the onset of thumb tenosynovitis or promote recovery from existing tenosynovitis. However, the ease of wearing, adjustment of tightness, and comfort of current thumb braces still need further improvement.

[0003] Summary of the Invention

[0004] In view of the above, this application provides a knob-type thumb brace to improve the convenience of wearing and adjusting and the comfort of use.

[0005] The technical solution adopted in this application is:

[0006] A knob-type thumb brace, comprising:

[0007] The main body of the protective gear has a loop for the thumb to pass through, so that the main body of the protective gear can be fitted onto the base of the thumb to form a support structure for the thumb;

[0008] The first connector has one end connected to one side of the protective gear body, and the other end has a connecting groove;

[0009] The second connector has one end connected to the other side of the protective gear body, and the other end is for passing through the connecting groove to connect with the first connector, so as to cooperate with the first connector to form a ring that wraps around the palm.

[0010] A knob adjustment device includes a knob assembly and an adjustment cord that is telescopically and adjustablely connected to the knob assembly; the knob assembly is mounted on the protective gear body, and one end of the adjustment cord is connected to one end of a second connector that passes through a connecting groove, so as to adjust the tightness of the first connector and the second connector by rotating the knob assembly.

[0011] Furthermore, one end of the second connector that passes through the connecting groove has a hook for attaching the adjusting rope to the hook.

[0012] Furthermore, the main body of the protective gear includes a finger sleeve and a palm support portion connected to the finger sleeve in a strip shape. A sleeve hole is formed on the finger sleeve, the knob assembly is installed on the finger sleeve, and the palm support portion is used to abut against the palm surface.

[0013] Furthermore, one end of the first connector is connected to the finger sleeve portion and is located on the opposite side of the palm support portion, and one end of the second connector is connected to the palm support portion.

[0014] Furthermore, a thumb loop is formed at the hole, which wraps around the outer periphery of the base of the thumb and has a certain degree of elasticity.

[0015] Furthermore, the finger sleeve, palm support, first connector, and second connector are all integrally molded from flexible materials.

[0016] Furthermore, the outer surface of the finger sleeve and the palm support is provided with a rigid support member.

[0017] Furthermore, the rigid support is made of shaped metal.

[0018] Furthermore, the second connector has a plurality of hook mounting holes arranged along its extension direction to allow for selective installation of hooks.

[0019] Furthermore, the end of the first connector is upturned, and a through hole is formed on the upturned end face to form the connecting groove, so that the second connector passes through the connecting groove and fits parallel to the surface of the first connector, and the hook is blocked by the groove wall of the connecting groove.

[0020] Furthermore, an arched beam is integrally formed on the end surface of the second connector, and the beam holes of the arched beam are correspondingly formed as connecting grooves. The arched beam can be selectively configured as a disconnected structure.

[0021] Furthermore, the rigid support includes a support shell wrapped around the back of the thumb and a support strip connected to the support shell. The support shell is located on the outer periphery of the finger sleeve portion, and the support strip is located on the outer surface of the palm support portion.

[0022] Furthermore, the knob assembly includes a base, a winding wheel, a sleeve, a ratchet, a screw cap, and a spring, and a retaining groove is provided on the inner side of the peripheral wall of the base;

[0023] The winding wheel is rotatably mounted on the base. A spring mounting hole is provided on the bottom surface of the winding wheel. The top of the winding wheel has rotating teeth that are distributed in a ring around the axis and are evenly spaced. An end wall is formed at the upper end of the sleeve base, and a through central hole is provided at the center of the end wall.

[0024] The lower outer circumferential surface of the sleeve has a tenon, and the upper outer circumferential surface of the sleeve has a flange extending outward. The sleeve is sleeved on the outer circumference of the winding wheel, and the tenon extends into the retaining groove.

[0025] The ratchet is fixed to the top of the sleeve, and the outer circumference of the ratchet has several ratchet teeth;

[0026] The cap is rotatably mounted on the outer periphery of the sleeve base. The inner ring surface of the cap has a toothed ring for fitting around the outer periphery of the ratchet and engaging with the ratchet teeth. The inner surface of the cap has mating teeth for engaging with the rotating teeth of the winding wheel.

[0027] The spring is installed in the spring mounting hole of the winding wheel, which provides the elastic force to lift the winding wheel upward, so that in the normal state, the top of the winding wheel abuts against the end wall of the sleeve seat, and the mating teeth of the cap engage with the rotating teeth of the winding wheel.

[0028] Furthermore, the knob assembly includes a button, a sleeve protruding from the center of the top of the winding wheel, a button groove recessed in the center of the top surface of the cap, a through hole formed at the bottom of the button groove, the sleeve passing through the central hole and the through hole into the button groove, the button being installed in the button groove and fixedly fitted onto the sleeve.

[0029] The beneficial effects of this application are:

[0030] Compared to existing technologies, the knob-type thumb protector provided in this application, through the coordinated arrangement of a protector body, a first connector, a second connector, and a knob adjustment component, allows for the following: First, the protector body is fitted onto the base of the thumb. The first and second connectors are located on the back and inner sides of the hand, respectively. Then, the second connector is passed through a connecting groove at one end of the first connector. Rotating the knob assembly allows for the extension and retraction of the adjustment rope, thereby adjusting the position of the second connector along the connecting groove, thus achieving adjustment of the tightness of the first and second connectors on the hand. This makes wearing and adjustment more convenient and provides better comfort. The knob-type thumb protector provided in this application has a novel and simple structure, is easy to manufacture, and can provide comfortable protection and appropriate support for the thumb. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but should not be construed as limiting the present application. In the drawings,

[0032] Figure 1: First-view perspective perspective view of the knob-type thumb guard of this application;

[0033] Figure 2: A second-view perspective perspective view of the knob-type thumb guard of this application;

[0034] Figure 3: A third-view perspective view of the knob-type thumb guard of this application;

[0035] Figure 4: Perspective view of the rigid support component of the knob-type thumb brace of this application;

[0036] Figure 5: Reference diagram of the back of the hand when using the knob-type thumb brace of this application;

[0037] Figure 6: Reference diagram of the palm surface during use of the knob-type thumb guard of this application;

[0038] Figure 7: A perspective view of another embodiment of the second connector of the knob-type thumb brace of this application;

[0039] Figure 8: A partial cross-sectional view of the knob-type thumb brace of this application;

[0040] Figure 9: Enlarged view of point A shown in Figure 8;

[0041] Figure 10: Exploded view of the knob adjustment component of the knob-type thumb brace according to a preferred embodiment of this application;

[0042] Figure 11: Perspective view of the winding wheel of the knob assembly in this application;

[0043] Figure 12: Perspective view of the mounting base of the knob assembly in this application in conjunction with the ratchet;

[0044] Figure 13: Perspective view of the knob assembly cap in this application;

[0045] Figure 14: First-view assembly diagram of the knob assembly in this application;

[0046] Figure 15: Second-view assembly diagram of the knob assembly in this application;

[0047] Figure 16: Cross-sectional view of the knob assembly in this application.

[0048] Reference numerals: Protective gear body 1, First connector 2, Second connector 3, Knob adjustment part 4, Sleeve hole 10, Connecting groove 20, Knob assembly 41, Adjusting rope 42, Finger sleeve part 11, Thumb collar 111, Palm support part 12, Rigid support part 13, Support shell 131, Support strip 132, Knob clearance hole 1311, Hook 5, Vent hole 130, Hook mounting hole 30, Base 43, Winding wheel 44, Sleeve seat 45, Ratchet 46, Screw cap 47, Spring 48, Button 49, Holding groove 431, Notch 432, Threading hole 441, Spring mounting hole 442, With rotating teeth 443, Sleeve part 444, End wall 451, Tenon 452, Flange 453, Thread guide sleeve 454, Ratchet 461, Tooth ring 471, Mating tooth 472, Clamping groove 473, Button groove 474. Detailed Implementation

[0049] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0050] As shown in Figures 1 to 3, this application provides a knob-type thumb protector, including a protector body 1, a first connector 2, a second connector 3, and a knob adjusting member 4. The protector body 1 has a sleeve hole 10 for the thumb to pass through, allowing the protector body 1 to be fitted onto the base of the thumb to form a support structure. One end of the first connector 2 is connected to one side of the protector body 1, and the other end of the first connector 2 has a connecting groove 20. One end of the second connector 3 is connected to the other side of the protector body 1, and the other end of the second connector 3 passes through the connecting groove 20 to connect with the first connector 2, thus forming a sleeve that wraps around the palm. The knob adjusting member 4 includes a knob assembly 41 and an adjusting rope 42 that is telescopically and adjustablely connected to the knob assembly 41. The knob assembly 41 is mounted on the protector body 1, and one end of the adjusting rope 42 is connected to the end of the second connector 3 that passes through the connecting groove 20, so that the tightness of the thumb protector on the palm can be adjusted by rotating the knob assembly 41.

[0051] The knob-type thumb brace provided in this application consists of a brace body 1, a first connector 2, a second connector 3, and a knob adjustment component 4. First, the brace body 1 is inserted into the base of the thumb through the sleeve hole 10. The first connector 2 and the second connector 3 are located on the back of the hand. Then, the second connector 3 is passed through the connecting groove 20 at one end of the first connector 2. The adjustment rope 42 of the knob adjustment component 4 is connected to the end of the second connector 3 that passes through the connecting groove 20. By rotating the knob assembly 41, the adjustment rope 42 is extended or retracted, thereby moving the second connector 3 along the connecting groove 20 to adjust its position, thus allowing for adjustment of the tightness of the first connector 2 and the second connector 3 on the hand. This makes wearing and adjustment more convenient and provides better comfort. The knob-type thumb brace provided in this application has a novel and simple structure, is easy to manufacture, and provides comfortable protection and appropriate support for the thumb.

[0052] In this embodiment, the main body 1 of the protective gear includes a finger sleeve portion 11 and a palm support portion 12 for fitting against the palm side. A sleeve hole 10 is formed on the finger sleeve portion 11, and the palm support portion 12 is connected to the finger sleeve portion 11. Further, a thumb collar 111 is formed at the sleeve hole 10, wrapping around the outer periphery of the base of the thumb and having a certain degree of elasticity. One end of the first connector 2 is connected to the finger sleeve portion 11 and is located on the opposite side of the palm support portion 12, and one end of the second connector 3 is connected to the palm support portion 12. A knob assembly 41 is installed on the finger sleeve portion 11. In this way, the palm support portion 12 provides effective support for the thumb sleeved in the finger sleeve portion 11 through the palm, and the support is comfortable.

[0053] In this embodiment, the finger sleeve 11, palm support 12, first connector 2, and second connector 3 are all integrally molded from a flexible material such as silicone. A rigid support 13 is provided on the outer surface of the finger sleeve 11 and palm support 12 to shape the knob-type thumb protector structure. The rigid support 13 can be made of a metal material such as aluminum, or a non-metallic material, both of which have a certain degree of malleability. Specifically, the rigid support 13 includes a support shell 131 wrapped around the back of the thumb and a support strip 132 connected to the support shell 131. The support shell 131 is located on the outer periphery of the finger sleeve 11, and the support strip 132 is located on the outer surface of the palm support 12. The support shell 131 has a knob clearance hole 1311 for mounting a knob adjustment component 4. Referring to Figure 4, the support shell 131 and support strip 132 of the rigid support 13 can be integrally formed from a malleable metal. Furthermore, both the support shell 131 and the support strip 132 are provided with ventilation holes 130 to improve wearing comfort.

[0054] To facilitate the connection between the adjusting rope 42 and the second connecting member 3, one end of the second connecting member 3 that passes through the connecting groove 20 has a hook 5, and a groove for accommodating the adjusting rope 42 is formed between the hook 5 and the second connecting member 3. This makes it easy to remove the adjusting rope 42 hanging on the hook 5 and facilitates a stable connection between the adjusting rope 42 and the second connecting member 3.

[0055] Both the first connector 2 and the second connector 3 are belt structures, which are designed to wrap around the sides of the palm.

[0056] Understandably, the hook 5 is detachably mounted on the second connector 3. In order to meet the needs of a larger wearing size, the second connector 3 is further provided with a plurality of hook mounting holes 30 arranged along its extension direction, so that the hook 5 can be selectively mounted on the corresponding hook mounting hole 30, thereby satisfying the need for the second connector 3 to have a larger wearing length.

[0057] Please refer to Figure 3 again. Understandably, in order to facilitate the insertion of the end of the second connector 3 and the hook 5 into the connecting groove 20, the end of the first connector 2 is upturned, and a through hole is opened on the upturned end face to form the connecting groove 20. This allows the second connector 3 to fit approximately parallel to the surface of the first connector 2 after passing through the connecting groove 20, and the hook 5 is blocked by the groove wall of the connecting groove 20 to prevent it from exiting the connecting groove 20.

[0058] Furthermore, the connecting groove 20 may also be an arched beam integrally formed on the end surface of the second connector 3, with the beam holes of the arched beam correspondingly formed as the connecting groove 20. Even further, referring to Figure 7, the arched beam may be configured as a disconnected structure.

[0059] Please refer to Figures 5 and 6. By wearing a knob-type thumb brace, the connection between the thumb and metacarpal bone is maintained and shaped, protecting the thumb and preventing it from easily deforming under stress, which could cause muscle or ligament damage. Furthermore, the knob adjustment component 4 allows both ends of the adjustment cord 42, which is fitted onto the hook 5, to simultaneously pull on the hook 5, allowing for adjustment of the tightness of the brace. The knob-type thumb brace is made of soft silicone material that fits against the palm, ensuring wearing comfort. The shape of the knob-type thumb brace is shaped and stabilized by the rigid support component 13, maintaining its stability and improving its strength and durability.

[0060] Please refer to Figures 8-16. This application provides a knob adjustment component 4, which includes a knob assembly 41 and an adjustment rope 42 connected to the knob assembly 41. The knob assembly 41 includes a base 43, a winding wheel 44, a sleeve 45, a ratchet 46, and a screw cap 47. Spring 48 and button 49, base 43 are fixedly installed on finger sleeve part 11, and a retaining groove 431 is provided on the inner side of the peripheral wall of base 43; winding wheel 44 is rotatably installed on base 43, and the peripheral wall of winding wheel 44 has two through holes 441 that are connected, so that the adjusting rope 42 enters from one through hole 441 and exits from the other through hole 441. Then, the two ends of the adjusting rope 42 on the outside of winding wheel 44 are connected to form a closed loop. The adjusting rope 42 is connected to winding wheel 44. As winding wheel 44 rotates, it drives the two ends of the adjusting rope 42 extending on the outside of winding wheel 44 to rotate together, thereby winding on winding wheel 44, realizing that the two ends of the line extending on winding wheel 44 are simultaneously wound and released at the same length, that is, realizing that the two ends of the adjusting rope 42 sleeved on hook 5 pull hook 5 at the same time. The bottom surface of the winding wheel 44 has a spring mounting hole 442 of a certain depth along the axial direction at its center. The top of the winding wheel 44 has rotating teeth 443 arranged in a ring around the axis and at equal intervals. A sleeve portion 444 protrudes from the center of the top of the winding wheel 44. In this embodiment, the sleeve portion 444 adopts a convex ball structure.

[0061] The sleeve 45 is fixedly mounted on the base 43. The sleeve 45 has a cylindrical portion, with an end wall 451 formed at the upper end of the cylindrical portion. A through-hole is formed in the center of the end wall 451. A tenon 452 is formed on the outer peripheral surface of the lower end of the cylindrical portion, and a flange 453 extends from the outer peripheral surface of the upper end of the cylindrical portion. The sleeve 45 is sleeved on the outer periphery of the winding wheel 44. The tenon 452 extends into the retaining groove 431, which restricts the sleeve 45 from lifting or rotating relative to the sleeve 45. Furthermore, two wire guide sleeves 454 are provided on the outer periphery of the sleeve 45 to match the two wire holes 441 of the winding wheel 44. When the adjusting rope 42 is installed, the adjusting rope 42 enters from one wire guide sleeve 454 of the sleeve 45, passes through the wire holes 441 of the two winding wheels 44, and then exits from the other wire guide sleeve 454 of the sleeve 45. Understandably, a notch 432 is provided on the periphery of the base 43 to allow the wire guide sleeve 454 to pass through.

[0062] The ratchet 46 is fixed to the top of the sleeve 45. The outer periphery of the ratchet 46 has a number of ratchet teeth 461, which allows the gear sleeved on the outer periphery of the ratchet teeth 461 to rotate in one direction and prevents the gear from rotating in the opposite direction.

[0063] The inner annular surface of the cap 47 has a toothed ring 471 for fitting around the outer periphery of the ratchet 46 and engaging with the ratchet teeth 461. The inner surface of the cap 47 has evenly spaced, ring-shaped teeth 472 arranged around the axis for engaging with the rotating teeth 443 of the winding wheel 44. When the teeth 472 are inserted into the gap between the rotating teeth 443, rotating the cap 47 causes the winding wheel 44 to rotate. When the teeth 472 disengage from the gap between the rotating teeth 443, the cap 47 and the winding wheel 44 will not move together. A clamping groove 473 is also formed on the inner annular surface of the cap 47, located below the toothed ring 471. The clamping groove 473 clamps the cap 47 to the top surface of the mounting base 45 and the bottom surface of the flange 453, thereby rotatably mounting the cap 47 onto the mounting base 45. A button groove 474 is recessed in the middle of the top surface of the screw cap 47. A through hole is formed at the bottom of the button groove 474 so that the sleeve part 444 of the winding wheel 44 can extend into the button groove 474.

[0064] Spring 48 is installed in spring mounting hole 442 of winding wheel 44, providing elastic force to lift winding wheel 44 upward, so that in normal state, the top of winding wheel 44 abuts against end wall 451 of sleeve seat 45, and sleeve part 444 extends into button groove 474. At the same time, the mating teeth 472 of screw cap 47 cooperate with the rotating teeth 443 of winding wheel 44. By rotating screw cap 47, winding wheel 44 is driven to rotate, thereby pulling the adjusting rope 42 and tightening the adjusting rope 42.

[0065] Button 49 is installed in the button groove 474 on the top surface of the cap 47 and is fixedly fitted onto the sleeve part 444, with a certain movement gap between the bottom surface of button 49 and the button groove 474. When it is necessary to loosen the adjusting rope 42, pressing button 49 causes the winding wheel 44 to move down and the spring 48 to compress. The rotating teeth 443 of the winding wheel 44 separate from the mating teeth 472 of the cap 47. At this time, external force acts on the adjusting rope 42, which can drive the winding wheel 44 to reverse, thereby loosening the adjusting rope 42. After releasing button 49, the winding wheel 44 will rise under the action of spring 48, and the rotating teeth 443 of the winding wheel 44 will re-mate with the mating teeth 472 of the cap 47. At this time, the adjusting rope 42 can be tensioned by rotating the cap 47.

[0066] In the preferred embodiment of this application, the knob adjustment component 4 adopts the above-described structure, which facilitates operation. It should be noted that the knob adjustment component 4 can also be other structures, and can be existing products that are directly purchased, as long as they can achieve the traction adjustment of the adjustment rope 42, that is, as long as they can achieve the function of tightening and loosening the rope.

[0067] Any combination of various embodiments of this application, provided that it does not violate the inventive concept of this application, shall be regarded as the content disclosed in this application; any simple modifications to the technical solution and any combination of different embodiments that do not violate the inventive concept of this application shall be within the protection scope of this application.

Claims

1. A knob-type thumb brace, characterized in that, include: The main body of the protective gear (1) has a sleeve hole (10) for the thumb to pass through, so that the main body of the protective gear (1) can be fitted onto the base of the thumb to form a support structure for the thumb; The first connector (2) is connected to one side of the protective gear body (1) at one end and has a connecting groove (20) at the other end; The second connector (3) is connected at one end to the other side of the protective body (1) and at the other end to pass through the connecting groove (20) and connect to the first connector (2) to cooperate with the first connector (2) to form a ring that wraps around the palm. The knob adjustment component (4) includes a knob assembly (41) and an adjustment rope (42) that is telescopically and adjustablely connected to the knob assembly (41); the knob assembly (41) is mounted on the protective gear body (1), and one end of the adjustment rope (42) is connected to one end of the second connector (3) that passes through the connecting groove (20) so as to adjust the tightness of the first connector (2) and the second connector (3) by rotating the knob assembly (41).

2. The knob-type thumb brace according to claim 1, characterized in that: The second connector (3) has a hook (5) at one end that passes through the connecting groove (20) for attaching the adjusting rope (42) to the hook (5).

3. The knob-type thumb brace according to claim 1, characterized in that: The main body (1) of the protective gear includes a finger sleeve (11) and a palm support (12) connected to the finger sleeve (11) in a strip shape. A sleeve hole (10) is formed on the finger sleeve (11). The knob assembly (41) is installed on the finger sleeve (11). The palm support (12) is used to abut against the palm.

4. The knob-type thumb brace according to claim 2, characterized in that: A thumb collar (111) is formed at the hole (10), which wraps around the outer periphery of the base of the thumb and has a certain degree of elasticity.

5. The knob-type thumb brace according to claim 3, characterized in that: The finger sleeve (11), palm support (12), first connector (2) and second connector (3) are all integrally formed from flexible material.

6. The knob-type thumb brace according to claim 3, characterized in that: The outer surfaces of the finger sleeve (11) and the palm support (12) are provided with rigid support members (13).

7. The knob-type thumb brace according to claim 6, characterized in that: The rigid support (13) is made of shaped metal.

8. The knob-type thumb brace according to claim 6, characterized in that: The rigid support (13) includes a support shell (131) wrapped around the back of the thumb and a support strip (132) connected to the support shell (131). The support shell (131) is located on the outer peripheral surface of the finger sleeve (11), and the support strip (132) is located on the outer surface of the palm support (12).

9. The knob-type thumb brace according to claim 1, characterized in that: The knob assembly (41) includes a base (43), a winding wheel (44), a sleeve (45), a ratchet (46), a screw cap (47), and a spring (48). The winding reel (44) is rotatably mounted on the base (43). A spring mounting hole (442) is provided on the bottom surface of the winding reel (44). A toothed part (443) is formed on the top of the winding reel (44). The sleeve seat (45) is sleeved on the outer circumference of the winding reel (44) and fixed thereon. On the base (43); The ratchet (46) is fixed to the top of the sleeve (45), and the outer periphery of the ratchet (46) has a number of ratchet teeth (461); The cap (47) is rotatably mounted on the outer periphery of the sleeve (45). The inner ring surface of the cap (47) has a toothed ring (471) for fitting around the outer periphery of the ratchet (46) and engaging with the ratchet teeth (461). The inner surface of the cap (47) has mating teeth (472) for engaging with the rotating teeth (443) of the winding wheel (44). A spring (48) is installed in the spring mounting hole (442) of the winding wheel (44), which provides a spring force to lift the winding wheel (44) upward, so that under normal conditions, the top of the winding wheel (44) abuts against the top of the sleeve (45), and the mating teeth (472) of the cap (47) engage with the rotating teeth (443) of the winding wheel (44). When the winding wheel (44) is subjected to an external force and drops a certain displacement, the mating teeth (472) and the rotating teeth (443) disengage.

10. The knob-type thumb brace according to claim 9, characterized in that: The knob assembly (41) includes a button (49). A sleeve (444) protrudes from the center of the top of the winding wheel (44). An end wall (451) is formed at the upper end of the sleeve base (45), and a through central hole is opened on the end wall (451). A button groove (474) is recessed on the top surface of the screw cap (47). A through hole is formed at the bottom of the button groove (474). The sleeve (444) passes through the central hole and the through hole and enters the button groove (474). The button (49) is installed in the button groove (474) and is fixedly sleeved on the sleeve (444).

Images