Hand restraint strap

Abstract

The invention belongs to the field of nursing equipment, and provides a hand restraint strap which comprises a wrist strap, a palm piece, a back piece and a restraint air bag, the palm piece and / or the back piece can be connected with the wrist strap, the wrist strap can be worn on the wrist, and the back piece and the palm piece are connected to form an annular structure so that the back piece can be worn on the back of the hand and the palm piece can be worn on the palm. A restraining air bag is arranged on the side, away from the palm, of the palm piece and is of a hollow structure, and air holes are formed in the side, close to the palm piece, of the restraining air bag so that the restraining air bag can convey positive-pressure airflow to the palm piece through the air holes under the pressure effect or suck negative-pressure airflow to the palm piece through the air holes under the elastic force effect. The wrist strap, the palm piece and the back piece can stably limit the hand restraint strap to the hand to avoid falling off, the restraint air bag is located at the palm position so that the restraint air bag can be squeezed when a patient wearing the hand restraint strap carries out grabbing actions, in this way, the palm piece can be dried and fresh, the function of exercising arm muscles can be achieved, and rehabilitation of the patient is better facilitated.

Description

Technical Field

[0001] This application relates to the field of nursing equipment, and particularly to hand restraint bands. Background Art

[0002] In the field of medical care, for patients with cognitive impairment, mental illness, postoperative restlessness, etc., hand restraint bands or restraint protection gloves are often needed to restrict the movement of their hands, prevent patients from pulling out tubes by themselves, scratching themselves or others, etc., and ensure the safety of patients and the smooth progress of treatment. The anti-grabbing function of hand restraint bands is poor, while restraint protection gloves have a better anti-grabbing function. Currently, the restraint protection gloves on the market are mainly made of cotton, leather or silicone and are fixed to the patient's wrist by means of Velcro, laces, etc.

[0003] If the hand restraint band does not have an anti-grabbing structure, the hand must be restricted within a limited range of motion. If an anti-grabbing structure is set, similar to the restraint protection glove, there are mainly the following major problems: poor comfort, poor air permeability of some glove materials, easy sweating and wet skin of the patient's hand after long-term wearing, leading to skin problems; inappropriate glove size, too tight will affect blood circulation, too loose will easily fall off and cannot play an effective restraint role; lack of flexibility: traditional restraint gloves limit all activities of the patient's hand, and the patient cannot perform some simple hand movements, such as slight grasping and touching, which to a certain extent affects the patient's mental state and rehabilitation process.

[0004] The patent application with the Chinese patent number "CN202776678U" and the name of "A glove-type medical restraint band" discloses a restraint band structure. Since there is a glove, the glove will become wet after sweating on the palm, and the comfort will decrease.

[0005] The patent application with the Chinese patent number "CN221357330U" and the name of "A new type of protective restraint glove" discloses a restraint glove. Although its air permeability is good, the anti-grabbing plate is in direct contact with the palm. It is made of PP material and does not have a sweat-absorbing function. After long-term use, it will also become wet like using a mouse, and the use comfort will decrease. If it is made of sweat-absorbing material, the comfort will also decrease after absorbing sweat, and a dry glove needs to be replaced.

[0006] The patent application with the Chinese patent number "CN213607296U" and the name of "A protective restraint glove" discloses a protective restraint glove. It is provided with a foam elastic grip ball. Although it has a good protective effect, it also does not solve the problem of sweating on the palm, and the position in contact with the palm will also be relatively wet. Summary of the Invention

[0007] The present application provides a hand restraint band to at least solve the above technical problems existing in the prior art.

[0008] According to the first aspect of the present application, a hand restraint band is provided, which includes a wristband, a palm piece, a back piece and a restraint airbag. The palm piece and / or the back piece can be connected to the wristband. The wristband can be worn on the wrist. The back piece and the palm piece are connected to form a ring structure so that the back piece is worn on the back of the hand and the palm piece is worn on the palm. A restraint airbag is arranged on the side of the palm piece away from the palm. The restraint airbag is a hollow structure and has air holes on the side close to the palm piece, so that under the action of pressure, the restraint airbag conveys positive pressure air flow to the palm piece through the air holes, or under the action of elasticity, the restraint airbag sucks to form a negative pressure air flow through the air holes.

[0009] Compared with the prior art, the hand restraint band of the present application has the following beneficial effects: The wristband, the palm piece and the back piece can stably limit the hand restraint band on the hand to prevent it from falling off. The palm piece can be made of a textile material that absorbs moisture and sweat, so the wearing comfort is higher. The restraint airbag is located at the palm position, so that when the wearing patient makes a grasping action, the restraint airbag can be squeezed, so that the restraint airbag conveys positive pressure air flow or sucks negative pressure air flow. The positive pressure air flow means that the restraint airbag conveys air to the palm piece, and the negative pressure air flow means that the restraint airbag sucks the humid air near the palm piece. In this way, the palm piece can be made drier and fresher. For some patients, repeatedly grasping and squeezing the airbag not only has the function of calming the anxious mood and soothing the mood, but also can exercise the arm muscles and the finger functions, which is more beneficial to the patient's recovery.

[0010] In an implementable embodiment, the wristband is provided with a first fastening part and a second fastening part, and the perimeters of the first fastening part and the second fastening part can be adjusted by a snap ring. The snap ring includes a first snap ring and a second snap ring, so that in the first state, the perimeter of the first fastening part is greater than the perimeter of the second fastening part, and in the second state, the perimeter of the second fastening part is greater than the perimeter of the first fastening part. This can avoid the occurrence of pressure sores caused by being fixed at the same position for a long time, and can also reduce the compression of blood vessels at the same position and the influence on blood circulation.

[0011] In an implementable embodiment, the first fastening portion includes a first snap ring, a first buckle, and a second buckle. The first buckle is provided with a first snap hole, and the second buckle is provided with a second snap hole. The first snap ring is provided with a first snap rod, a second snap rod, a third snap rod, and a fourth snap rod. The distance between the first snap rod and the second snap rod is less than or greater than the distance between the third snap rod and the fourth snap rod. In the first state, the first snap hole and the second snap hole are located at the snap rods with a larger distance in the first snap ring. In the second state, the first snap hole and the second snap hole are located at the snap rods with a smaller distance in the first snap ring. The first end of the first snap rod is connected to the third snap rod through a first transition rod, the second end of the first snap rod is connected to the second snap rod through a first cross rod, and the fourth snap rod is connected to the second snap rod through a second transition rod. Thus, by moving the first snap ring, the circumference of the first fastening portion can be adjusted to further realize the switching between the first state and the second state, and the operation is simple and fast.

[0012] In an implementable embodiment, the second fastening portion has the same design as the first fastening portion. The second fastening portion is provided with a second snap ring, and the second snap ring is connected to the first snap ring to form a symmetric annular structure. The distance between the first snap rod and the second snap rod is greater than the distance between the third snap rod and the fourth snap rod. In the first state, the first snap hole and the second snap hole are located at the first snap rod and the second snap rod with a larger distance in the first snap ring. In the second state, the first snap hole and the second snap hole are located at the third snap rod and the fourth snap rod with a smaller distance in the first snap ring. The second snap ring is provided with a fifth snap rod, a sixth snap rod, a seventh snap rod, and an eighth snap rod. The first end of the seventh snap rod is connected to the fifth snap rod through a third transition rod, the second end of the seventh snap rod is connected to the eighth snap rod through a second cross rod, and the sixth snap rod is connected to the eighth snap rod through a fourth transition rod. The third snap rod is connected to the fifth snap rod, and the fourth snap rod is connected to the sixth snap rod. Or the second snap ring is provided with a seventh snap rod and an eighth snap rod. The first end of the seventh snap rod is connected to the third snap rod through a third transition rod, the second end of the seventh snap rod is connected to the eighth snap rod through a second cross rod, and the fourth snap rod is connected to the eighth snap rod through a fourth transition rod. Thus, the state switching can be completed by one movement without separately moving the first snap ring and the second snap ring, and it is avoided that both the first snap ring and the second snap ring are in a state with a larger or smaller circumference at the same time.

[0013] In an implementable embodiment, the wristband is provided with a first strap and a second strap. One end of the first strap is fixed to the first cross rod, and one end of the second strap is fixed to the second cross rod. The first strap and the second strap bind the wristband to different positions. In this way, not only the grasping of the hand is restricted, but also the movement of the arm can be restricted, playing a better restraining role. When the arm moves in different directions, the first snap ring and the second snap ring can be moved to change the states of the first fastening portion and the second fastening portion.

[0014] In an implementable embodiment, the restraint airbag is provided with an inner cavity and an outer cavity. The outer cavity communicates with the outside through a plurality of air holes. A first one-way valve is provided between the outer cavity and the inner cavity so that the gas in the outer cavity can flow into the inner cavity, but the first one-way valve automatically closes when the gas flows from the inner cavity to the outer cavity. The inner cavity is provided with an exhaust hole, and the exhaust hole is provided with a second one-way valve so that the inner cavity discharges air outward through the second one-way valve. The position of the exhaust hole is far from the palm piece. This can achieve unidirectional air flow, that is, suck the relatively humid air of the palm piece to the outside, so that other air flows on the surface of the palm piece or penetrates through the palm piece, improving the evaporation efficiency of the sweat on the palm piece and making the use more comfortable.

[0015] In an implementable embodiment, an anti-grabbing plate is provided on the side of the restraint airbag away from the palm piece, and the outer surface of the anti-grabbing plate is in a hemispherical shape. The spherical shape has a better protective effect and is not easily deformed greatly.

[0016] In an implementable embodiment, the restraint airbag adopts a double-layer structure including an inner shell and an outer shell. The outer cavity is located between the inner shell and the outer shell, the inner cavity is located inside the inner shell, the first one-way valve is arranged on the inner shell, the outer shell is provided with a first channel so that the inner cavity communicates directly with the outside of the outer shell through the first channel, and the second one-way valve is arranged in the first channel to control the air flow in the first channel. Such a design has a simple structure and can be conveniently manufactured by fusing hemispherical structures together.

[0017] In an implementable embodiment, a first air valve is provided at the position of the first one-way valve. The first air valve is provided with a first control rod, and at least part of the structure of the first control rod is located outside the outer shell so that the on-off of the first air valve can be controlled outside the outer shell. The first channel is provided with a second air valve, and the second air valve controls the on-off of the first channel. For some patients with more serious unclear consciousness, the first air valve and the second air valve can be closed when the restraint airbag is in a full state, so that the restraint airbag maintains a larger volume and is not compressed, which has a better protective effect and it is more difficult for the patient to grab other items. For some relatively quiet patients, there is basically no situation of randomly grabbing things. The gas in the restraint airbag can also be exhausted, and the first air valve and the second air valve are closed so that the restraint airbag is in a flat state, which can reduce the restraint on the patient and give the patient more free space.

[0018] In an implementable embodiment, the outer shell is provided with a plurality of protruding balls, and the protruding balls and the air holes are arranged at intervals. The protruding balls protrude a certain height both outward and inward from the outer shell. Such a design can generate air flow at the gap position between the outer cavity and the outside of the outer shell even in a squeezed state, making the air circulation smoother and the palm piece drier and more comfortable.

[0019] In an implementable embodiment, the anti-scratching plate is connected to the restraint airbag, and a second channel communicating with the first channel is provided on the anti-scratching plate. The second channel protrudes a certain height relative to the anti-scratching plate, and side air holes are provided on the side wall of the second channel. By providing the side air holes, it is possible to avoid blocking the opening position of the second channel in case of an accident and affecting the gas flow.

[0020] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understandable through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features, and advantages of the exemplary embodiments of the present application will become easily understandable. In the drawings, several embodiments of the present application are shown in an exemplary rather than restrictive manner, wherein: In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0022] Figure 1 A schematic cross-sectional view of the wearing state of the hand restraint band according to an embodiment of the present application is shown; Figure 2 A schematic three-dimensional view of the composition structure of the hand restraint band according to Embodiment 1 of the present application is shown; Figure 3 A schematic cross-sectional view of the composition structure of the hand restraint band according to Embodiment 1 of the present application is shown; Figure 4 Shows Figure 3 The partial enlarged view at A in Figure 5 Shows Figure 3 The partial enlarged view at B in Figure 6 A schematic connection diagram of the first snap ring and the second snap ring of the hand restraint band according to Embodiment 1 of the present application is shown; Figure 7 A schematic three-dimensional view of the composition structure of the hand restraint band according to Embodiment 2 of the present application is shown; Figure 8 A schematic cross-sectional view of the composition structure of the hand restraint band according to Embodiment 2 of the present application is shown; Figure 9 A schematic view of the first snap ring of the hand restraint band according to Embodiment 3 of the present application is shown; Figure 10 A schematic connection diagram of the first snap ring and the second snap ring of the hand restraint band according to Embodiment 4 of the present application is shown; Figure 11 A schematic view of the connection of the first snap ring and the second snap ring of the hand restraint band according to Embodiment 4 of the present application and in the first state is shown; Figure 12Shows the schematic diagram of the connection between the first snap ring and the second snap ring of the hand restraint belt in Embodiment 5 of the present application; Figure 13 Shows the schematic diagram of the second state of the connection and installation of the first snap ring and the second snap ring of the hand restraint belt in Embodiment 5 of the present application; Figure 14 Shows the schematic diagram of the first state of the connection and installation of the first snap ring and the second snap ring of the hand restraint belt in Embodiment 5 of the present application.

[0023] Explanation of the reference numerals in the figure: 1. Wristband; 2. Back piece; 3. Palm piece; 4. Restraint airbag; 5. Anti-scratch plate; 6. Palm center; 7. Air hole; 8. Binding strap; 9. Snap ring; 11. First fastening part; 12. Second fastening part; 13. First snap hole; 14. First snap; 15. Second snap; 16. Second snap hole; 20. First valve tube; 21. First diaphragm; 22. First through hole; 23. First spring; 24. First installation cavity; 25. First valve body; 26. Step hole wall; 27. First air valve; 28. First control rod; 29. First valve core; 30. Third through hole; 31. Second diaphragm; 32. Second through hole; 33. Second spring; 34. Second installation cavity; 35. Second valve body; 36. Second step section; 37. Second air valve; 38. Second control rod; 39. First step section; 40. Inner cavity; 41. Outer cavity; 42. First one-way valve; 43. Second one-way valve; 44. Inner shell; 45. Outer shell; 46. First channel; 47. Second channel; 48. Valve hole; 49. First core hole; 50. Notch; 51. Heater; 52. Raised ball; 71. First transition rod; 72. Second transition rod; 73. Third transition rod; 74. Fourth transition rod; 75. First cross bar; 76. Second cross bar; 77. Exhaust hole; 78. Figure-eight buckle; 79. Side air hole; 80. First binding strap; 81. Third snap; 82. Fourth snap; 83. Third snap hole; 84. Fourth snap hole; 85. Fifth catch bar; 86. Sixth catch bar; 87. Seventh catch bar; 88. Eighth catch bar; 89. Second snap ring; 94. First catch bar; 95. Second catch bar; 96. Third catch bar; 97. Fourth catch bar; 98. Second binding strap; 99. First snap ring. Detailed implementation manners To make the objectives, features, and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0024] Such as Figure 1 And Figure 2As shown in the figure, a hand restraint band includes a wristband 1, a palm piece 3, a back piece 2, and a restraint airbag 4. The palm piece 3 and / or the back piece 2 can be connected to the wristband 1. The wristband 1 can be worn on the wrist. The back piece 2 and the palm piece 3 are connected to form a ring structure so that the back piece 2 is worn on the back of the hand and the palm piece 3 is worn on the palm 6 position. A restraint airbag 4 is arranged on the side of the palm piece 3 away from the palm 6. The restraint airbag 4 is a hollow structure and has air holes 7 on the side close to the palm piece 3, so that under the action of pressure, the restraint airbag 4 conveys positive pressure air flow to the palm piece 3 through the air holes 7, or under the action of elasticity, the restraint airbag 4 sucks to form a negative pressure air flow through the air holes 7 to the palm piece 3.

[0025] As Figure 1 and Figure 2 shown in the figure, the palm piece 3 and the back piece 2 can be made of cloth into the shape of an ordinary glove, or can be made into a tube shape so that the fingers can be exposed, making the air permeability better. The palm piece 3 needs to be made of a material with better water absorption performance, so that it is more comfortable to wear.

[0026] As Figure 2 and Figure 3 shown in the figure, the restraint airbag 4 has a cavity. After the restraint airbag 4 is squeezed, the air in the cavity will start to flow. In the first case, the gas in the cavity flows to the palm piece 3, so as to convey positive pressure air flow to the palm piece 3, that is, blowing the palm piece 3 with air to keep the palm piece 3 dry. In the second case, the restraint airbag 4 conveys air in other directions, that is, exhaust holes 7 are arranged in other positions. After the air is discharged, the volume of the restraint airbag 4 becomes smaller and elastic deformation occurs, or an elastic component is arranged in the restraint airbag 4. After the volume of the restraint airbag 4 becomes smaller, the elastic component will be squeezed and deformed. After the pressure is removed, the restraint airbag 4 starts to recover its shape under the action of its own elasticity or under the action of an elastic component such as a spring. In this process, the volume becomes larger, so the restraint airbag 4 starts to suck air from the air holes 7, so as to suck to form a negative pressure air flow to the palm piece 3.

[0027] As Figure 2 and Figure 3 shown in the figure, the restraint airbag 4 can be designed into a spherical or ellipsoidal shape. Other shapes can be used, but the manufacturing is troublesome and the material utilization rate is low. The restraint airbag 4 has a certain volume, so setting it at the palm 6 position can limit the patient from grabbing other items and has a certain restraint effect. In addition, a valve can be set to control the restraint airbag 4, that is, when exhaust is not needed, the valve is closed to make the restraint airbag 4 maintain a spherical three-dimensional structure, so that the anti-grabbing effect is better. After the patient's mood is stable or for some patients with better conditions and stronger self-control, the gas in the restraint airbag 4 can be discharged to reduce the volume of the restraint airbag 4 and improve the patient's freedom and comfort.

[0028] Several specific embodiments are provided below to illustrate the technical solutions. Those skilled in the art can combine the technical solutions of different embodiments for use to form new technical solutions. Since there are many different combination methods, they cannot be listed one by one.

[0029] Embodiment 1: As Figure 2 and Figure 6 shown, the wristband 1 is provided with a first fastening portion 11 and a second fastening portion 12. The first fastening portion 11 and the second fastening portion 12 are connected by an elastic material or other flexible material so that the perimeters of the first fastening portion 11 and the second fastening portion 12 can be independently changed. The perimeters of the first fastening portion 11 and the second fastening portion 12 can be adjusted by a snap ring 9, so that in the first state, the perimeter of the first fastening portion 11 is greater than the perimeter of the second fastening portion 12, and in the second state, the perimeter of the second fastening portion 12 is greater than the perimeter of the first fastening portion 11. The snap ring 9 includes a first snap ring 99 and a second snap ring 89. Figure 2 In [description], the first fastening portion 11 and the second fastening portion 12 are in the second state, and the first fastening portion 11 is in a relatively tight state. Staying in the same fixed position for a long time is likely to cause pressure sores. Therefore, designing multiple fastening portions can alleviate this effect. Multiple fastening portions can be set according to the actual situation. Since manual switching is required, it is more convenient to design two fastening portions, and there is no need to record the last used position. Just replace it at a certain time, such as once a day or once every eight hours.

[0030] As Figure 2 and Figure 6As shown, in one embodiment, the first fastening portion 11 includes a first snap ring 99, a first buckle 14 and a second buckle 15. The first buckle 14 is provided with a first card hole 13, and the second buckle 15 is provided with a second card hole 16. The first snap ring 99 is provided with a first card rod 94, a second card rod 95, a third card rod 96 and a fourth card rod 97. The distance between the first card rod 94 and the second card rod 95 is greater than the distance between the third card rod 96 and the fourth card rod 97. In the first state, the first card hole 13 and the second card hole 16 are located at the card rods with a larger distance of the first snap ring 99. In the second state, the first card hole 13 and the second card hole 16 are located at the card rods with a smaller distance of the first snap ring 99. The first end of the first card rod 94 is connected to the third card rod 96 through a first transition rod 71, and the second end of the first card rod 94 is connected to the second card rod 95 through a first cross bar 75. The first end of the fourth card rod 97 is connected to the third card rod 96 through other rods, and the fourth card rod 97 is connected to the second card rod 95 through a second transition rod 72. The first transition rod 71 and the second transition rod 72 can be set as inclined structures and are bent and transitioned through rounded corners. The first card hole 13 of the first buckle 14 and the second card hole 16 of the second buckle 15 need to be designed larger or the first buckle 14 and the second buckle 15 are made of elastic materials, so that the bent result can pass through the first card hole 13 and the second card hole 16 conveniently. The second fastening portion 12 is provided with a third buckle 81 and a fourth buckle 82. The third buckle 81 is provided with a third card hole 83, and the fourth buckle 82 is provided with a fourth card hole 84. By adjusting the distance between the third card hole 83 and the fourth card hole 84, the perimeter of the second fastening portion 12 can be adjusted.

[0031] As Figure 2 and Figure 6 shown, in one embodiment, the second fastening portion 12 has the same design as the first fastening portion 11. The second fastening portion 12 is provided with a second snap ring 89. The second snap ring 89 and the first snap ring 99 are connected to form a symmetric annular structure. The distance between the first card rod 94 and the second card rod 95 is greater than the distance between the third card rod 96 and the fourth card rod 97. In the first state, the first card hole 13 and the second card hole 16 are located at the first card rod 94 and the second card rod 95 with a larger distance of the first snap ring 99. In the second state, the first card hole 13 and the second card hole 16 are located at the third card rod 96 and the fourth card rod 97 with a smaller distance of the first snap ring 99. The second snap ring 89 is provided with a fifth card rod 85, a sixth card rod 86, a seventh card rod 87 and an eighth card rod 88. The first end of the seventh card rod 87 is connected to the fifth card rod 85 through a third transition rod 73, and the second end of the seventh card rod 87 is connected to the eighth card rod 88 through a second cross bar 76. The sixth card rod 86 is connected to the eighth card rod 88 through a fourth transition rod 74. The third card rod 96 is connected to the fifth card rod 85, and the fourth card rod 97 is connected to the sixth card rod 86. In this way, the state switching can be completed by one movement without separately moving the first snap ring 99 and the second snap ring 89, and it is avoided that both the first snap ring 99 and the second snap ring 89 are in the state of a larger or smaller perimeter at the same time.

[0032] As Figure 2 shown, in one implementable embodiment, the wristband 1 is provided with a first strap 80 and a second strap 98. One end of the first strap 80 is fixed to the first crossbar 75, and one end of the second strap 98 is fixed to the second crossbar 76. The second ends of the first strap 80 and the second strap 98 bundle the wristband 1 to different positions. For example, the second end of the first strap 80 is tied to the left position, and the second end of the second strap 98 is tied to the right position. When the hand moves to the left, the second strap 98 is stressed to pull the second crossbar 76, causing the first snap ring 99 and the second snap ring 89 to move towards the second fastening portion 12. When the hand moves to the right, the first strap 80 is stressed to pull the first crossbar 75, causing the first snap ring 99 and the second snap ring 89 to move towards the first fastening portion 11. In this way, the change of the fastening position can be realized to switch between the first state and the second state. Of course, different methods can be adopted for different people. Especially for those without self-control who often act randomly, medical staff can lock the snap ring 9 at a designated position and adjust the state by the medical staff.

[0033] In one embodiment, the wristband 1 is provided with a strap 8. The strap 8 is provided with a figure-eight buckle 78, and the length can be adjusted through the figure-eight buckle 78. A plug-in buckle or a side-opening buckle is set to achieve quick plug-in. The length of the strap 8 can be adjusted through the figure-eight buckle 78 to conveniently adjust the restricted range of activities. A ladder buckle can also be directly set to achieve the functions of length adjustment and quick separation. The wristband 1 is also provided with an openable interface for conveniently wearing the wristband 1, and the interface uses Velcro or a plastic buckle to control the opening and closing of the wristband 1.

[0034] As Figure 2 、 Figure 3 and Figure 4 shown, in one embodiment, the restraint airbag 4 is provided with an inner cavity 40 and an outer cavity 41. The outer cavity 41 is communicated with the outside through a gas hole 7. A first one-way valve 42 is provided between the outer cavity 41 and the inner cavity 40, so that the gas in the outer cavity 41 can flow into the inner cavity 40, but when the gas flows from the inner cavity 40 to the outer cavity 41, the first one-way valve 42 automatically closes. Multiple first one-way valves 42 can be set, and they can be set near the gas hole 7. The inner cavity 40 is provided with an exhaust hole 77, and the exhaust hole 77 is provided with a second one-way valve 43, so that the inner cavity 40 exhausts gas outward through the second one-way valve 43. The position of the exhaust hole 77 is far from the palm piece 3. The gas discharged from the exhaust hole 77 has a high moisture content, so it should be as far away from the palm piece 3 as possible, and there are no strict requirements for the specific orientation.

[0035] In one embodiment, an anti-grabbing plate 5 is provided on the side of the restraint airbag 4 away from the palm piece 3, and the outer surface of the anti-grabbing plate 5 is in a hemispherical shape. As Figure 2 shown, the anti-grabbing plate 5 is provided with a notch 50 at the wrist position to prevent the edge of the anti-grabbing plate 5 from directly contacting the wrist. Of course, if the anti-grabbing plate 5 is squeezed to make it tilt, it may also contact the wrist, but frequent contact should be avoided to prevent pressure sores.

[0036] As Figure 3 、 Figure 4 and Figure 5 shown, in one embodiment, the restraint airbag 4 adopts a double-layer structure including an inner shell 44 and an outer shell 45. The outer cavity 41 is located between the inner shell 44 and the outer shell 45, the inner cavity 40 is located inside the inner shell 44, the first one-way valve 42 is arranged on the inner shell 44. In some embodiments, part of the structure of the first one-way valve 42 is arranged on the inner shell 44 and part of the structure is connected to the outer shell 45 is also acceptable. The outer shell 45 is provided with a first channel 46 so that the inner cavity 40 is directly communicated with the outside of the outer shell 45 through the first channel 46. The second one-way valve 43 is arranged in the first channel 46 to control the air flow in the first channel 46. In this embodiment, the inner shell 44 is completely inside the outer shell 45. In some other embodiments, the outer shell 45 and the inner shell 44 cooperate to form the outer cavity 41, and at least part of the structure of the inner shell 44 is not inside the outer shell 45.

[0037] As Figure 3 and Figure 5 shown, in one embodiment, the first one-way valve 42 is provided with a first diaphragm 21, a first through hole 22, a first spring 23 and a first installation cavity 24. The restraint airbag 4 can integrally form the structure of a first valve body 25. The first valve body 25 is provided with the first installation cavity 24. The first spring 23 and the first diaphragm 21 are installed in the first installation cavity 24. One end of the first spring 23 abuts against the first diaphragm 21 and the other end abuts against the stepped hole wall 26 of the first installation cavity 24. The first spring 23 relies on its elastic force to make the first diaphragm 21 cover the first through hole 22.

[0038] As Figure 3 and 5 shown, in one embodiment, a first air valve 27 is arranged at the position of the first one-way valve 42. The first air valve 27 is provided with a first control rod 28. At least part of the structure of the first control rod 28 is located outside the outer shell 45 so that the on-off of the first air valve 27 can be controlled outside the outer shell 45. The first channel 46 is provided with a second air valve 37 to control the on-off of the first channel 46.

[0039] As Figure 3 and 5 shown, the first air valve 27 is provided with a first valve core 29. The restraint airbag 4 integrally forms a first valve tube 20. The first valve tube 20 is provided with a valve hole 48. The first valve core 29 is provided with a first core hole 49. By rotating the first control rod 28, the first valve core 29 can be rotated so that the first core hole 49 is aligned with the valve hole 48 to realize the conduction of the first air valve 27. When rotated to a non-aligned position, the valve can be cut off. The second air valve 37 can adopt the same design as the first air valve 27.

[0040] As Figure 3 and Figure 4As shown, in one embodiment, the second one-way valve 43 is provided with a second diaphragm 31, a second through hole 32, a second spring 33 and a second installation cavity 34. The restraint airbag 4 can integrally form the structure of the second valve body 35. The second valve body 35 is provided with the second installation cavity 34. The second spring 33 and the second diaphragm 31 are installed in the second installation cavity 34. One end of the second spring 33 abuts against the second diaphragm 31 and the other end abuts against the second control rod 38 of the second installation cavity 34. The second spring 33 relies on its elastic force to make the second diaphragm 31 cover the second through hole 32. The second control rod 38 includes a first stepped section 39 and a second stepped section 36. The diameter of the first stepped section 39 is larger than that of the second stepped section 36. The first stepped section 39 is axially provided with a plurality of third through holes 30. An external thread is provided outside the first stepped section 39 to match the internal thread of the second installation cavity 34, so that rotating the first stepped section 39 can adjust the position of the second control rod 38. When the second control rod 38 rotates to the innermost end, the second stepped section 36 abuts against the second diaphragm 31 to make the second diaphragm 31 seal the second through hole 32. This structure can be used as the second air valve 37 to control the on-off of the first channel 46, that is, the second one-way valve 43 and the second air valve 37 are combined into one, and the structure is simpler.

[0041] As Figure 3 shown, in one embodiment, the outer shell 45 is provided with a plurality of raised balls 52. The raised balls 52 and the air holes 7 are arranged at intervals. The raised balls 52 protrude a certain height both outward and inward from the outer shell 45. The raised balls 52 are integrally injection-molded with the outer shell 45.

[0042] As Figure 3 and Figure 4 shown, in one embodiment, the anti-grabbing plate 5 is connected to the restraint airbag 4 and a second channel 47 communicating with the first channel 46 is provided on the anti-grabbing plate 5. The second channel 47 protrudes a certain height relative to the anti-grabbing plate 5. Side air holes 79 are provided on the side wall of the second channel 47. The anti-grabbing plate 5 is provided with through holes for facilitating the installation of the first control rod 28. The first control rod 28 is detachably fixed to the first valve core 29. After adjusting the first valve core 29, the first control rod 28 can be removed.

[0043] In one embodiment, the anti-grabbing plate 5 is made of an elastic material, such as rubber material, or made of a plastic material with better elasticity. Polyurethane material has low density and good elasticity and can be used as the first choice.

[0044] In one embodiment, the second fastening part 12 and the first fastening part 11 adopt a symmetrical design. In the first state, the first clamping hole 13 and the second clamping hole 16 are located at the clamping rods with a larger distance between the first clamping rings 99. In the second state, the first clamping hole 13 and the second clamping hole 16 are located at the clamping rods with a smaller distance between the first clamping rings 99.

[0045] Example 2: As Figure 7 andFigure 8 As shown, in one embodiment, the anti-scratching plate 5 is an oval flat plate structure. The palm piece 3 and the back piece 2 are opened and closed by a zipper structure at one end of the finger. The inner cavity 40 is located below the outer cavity 41. The outer shell 45 is provided with a plurality of air holes 7. A first one-way valve 42 is arranged between the inner cavity 40 and the outer cavity 41 to enable the inner cavity 40 to unidirectionally transport air to the outer cavity 41. The inner shell 44 is provided with a second one-way valve 43 to enable the inner cavity 40 to inhale air outward through the second one-way valve 43. A heater 51 and a temperature sensor are embedded inside the anti-scratching plate 5 to control the temperature at 40°C - 45°C.

[0046] Example 3: As Figure 9 shown, in one embodiment, the first snap ring 99 is provided with a first cross bar 75, a second cross bar 76, a first transition bar 71, a second transition bar 72, a first latch 94, a second latch 95, a third latch 96 and a fourth latch 97. The distance between the first latch 94 and the second latch 95 is less than or greater than the distance between the third latch 96 and the fourth latch 97. The first end of the first latch 94 is connected to the third latch 96 through the first transition bar 71. The second end of the first latch 94 is connected to the second latch 95 through the first cross bar 75. The first end of the fourth latch 97 is connected to the third latch 96 through the second cross bar 76. The fourth latch 97 is connected to the second latch 95 through the second transition bar 72.

[0047] Example 4: As Figure 10 shown, in one embodiment, the first snap ring 99 and the second snap ring 89 adopt an integral structure. The first snap ring 99 is provided with a first cross bar 75, a second cross bar 76, a first transition bar 71, a second transition bar 72, a first latch 94, a second latch 95, a third latch 96 and a fourth latch 97. The distance between the first latch 94 and the second latch 95 is greater than the distance between the third latch 96 and the fourth latch 97. The first end of the first latch 94 is connected to the third latch 96 through the first transition bar 71. The second end of the first latch 94 is connected to the second latch 95 through the first cross bar 75. The first end of the fourth latch 97 is connected to the third latch 96 through the second cross bar 76. The second snap ring 89 is provided with a seventh latch 87 and an eighth latch 88. The first end of the seventh latch 87 is connected to the third latch 96 through a third transition bar 73. The second end of the seventh latch 87 is connected to the eighth latch 88 through the second cross bar 76. The fourth latch 97 is connected to the eighth latch 88 through a fourth transition bar 74. Compared with Example 1, the third latch 96 and the fourth latch 97 are in a shared state, which can reduce the overall length.

[0048] As Figure 11As shown, the distance between the first card hole 13 and the second card hole 16 is greater than the distance between the third card hole 83 and the fourth card hole 84. The first fastening part 11 and the second fastening part 12 are in the first state. At this time, the first snap ring 99 and the second snap ring 89 can be moved to the left to switch to the second state.

[0049] Embodiment 5: As Figure 12 shown, in an embodiment, the first snap ring 99 and the second snap ring 89 are of an integral structure. The first snap ring 99 is provided with a first cross bar 75, a second cross bar 76, a first transition bar 71, a second transition bar 72, a first latch 94, a second latch 95, a third latch 96 and a fourth latch 97. The distance between the first latch 94 and the second latch 95 is less than the distance between the third latch 96 and the fourth latch 97. The first end of the first latch 94 is connected to the third latch 96 through the first transition bar 71, and the second end of the first latch 94 is connected to the second latch 95 through the first cross bar 75. The first end of the fourth latch 97 is connected to the third latch 96 through the second cross bar 76. The second snap ring 89 is provided with a seventh latch 87 and an eighth latch 88. The first end of the seventh latch 87 is connected to the third latch 96 through a third transition bar 73, and the second end of the seventh latch 87 is connected to the eighth latch 88 through the second cross bar 76. The fourth latch 97 is connected to the eighth latch 88 through a fourth transition bar 74.

[0050] As Figure 13 shown, the distance between the first card hole 13 and the second card hole 16 is less than the distance between the third card hole 83 and the fourth card hole 84. The first fastening part 11 and the second fastening part 12 are in the second state. At this time, the first snap ring 99 and the second snap ring 89 can be moved to the left to switch to the first state.

[0051] As Figure 14 shown, the distance between the first card hole 13 and the second card hole 16 is greater than the distance between the third card hole 83 and the fourth card hole 84. The first fastening part 11 and the second fastening part 12 are in the first state. At this time, the first snap ring 99 and the second snap ring 89 can be moved to the right to switch to the second state.

[0052] It should be understood that the various forms of the process shown above can be used, with steps reordered, added or deleted. For example, the steps described in this application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this application can be achieved. This is not limited herein.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0054] As described above, the above are only specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed in this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claimed rights.

Claims

1. Hand restraint belt, characterized by: include: A hand restraint belt comprises a wristband (1), a palm sheet (3), a back sheet (2) and a restraining airbag (4), wherein the palm sheet (3) and / or the back sheet (2) can be connected to the wristband (1), the wristband (1) can be worn on the wrist, the back sheet (2) and the palm sheet (3) are connected to form an annular structure so that the back sheet (2) is worn on the back of the hand and the palm sheet (3) is worn on the palm (6), the restraining airbag (4) is arranged on the side of the palm sheet (3) away from the palm (6), the restraining airbag (4) is a hollow structure and is provided with an air hole (7) on the side close to the palm sheet (3), so that under the action of pressure, the restraining airbag (4) delivers a positive pressure airflow to the palm sheet (3) through the air hole (7), or under the action of elastic force, the restraining airbag (4) sucks a negative pressure airflow to the palm sheet (3) through the air hole (7).

2. The hand restraint belt according to claim 1, characterized in that: The wristband (1) is provided with a first fastening portion (11) and a second fastening portion (12), and the circumferences of the first fastening portion (11) and the second fastening portion (12) can be adjusted by a snap ring (9), so that in a first state, the circumference of the first fastening portion (11) is greater than the circumference of the second fastening portion (12), and in a second state, the circumference of the second fastening portion (12) is greater than the circumference of the first fastening portion (11).

3. The hand restraint belt according to claim 2, characterized in that: The first fastening portion (11) comprises a first clamping ring (99), a first buckle (14) and a second buckle (15); the first buckle (14) is provided with a first clamping hole (13); the second buckle (15) is provided with a second clamping hole (16); the first clamping ring (99) is provided with a first clamping rod (94), a second clamping rod (95), a third clamping rod (96) and a fourth clamping rod (97); the distance between the first clamping rod (94) and the second clamping rod (95) is smaller than or larger than the distance between the third clamping rod (96) and the fourth clamping rod (97); the first end of the first clamping rod (94) is connected to the third clamping rod (96) through a first transition rod (71); the second end of the first clamping rod (94) is connected to the second clamping rod (95) through a first cross rod (75); and the fourth clamping rod (97) is connected to the second clamping rod (95) through a second transition rod (72).

4. The hand restraint belt according to claim 3, characterized in that: The second fastening portion (12) and the first fastening portion (11) are of the same design. The second fastening portion (12) is provided with a second clamping ring (89). The second clamping ring (89) is connected to the first clamping ring (99) to form a symmetrical annular structure. The distance between the first clamping rod (94) and the second clamping rod (95) is greater than the distance between the third clamping rod (96) and the fourth clamping rod (97). In a first state, the first clamping hole (13) and the second clamping hole (16) are located at the first clamping rod (94) and the second clamping rod (95) of the first clamping ring (99). In a second state, the first clamping hole (13) and the second clamping hole (16) are located at the first clamping rod (94) and the second clamping rod (95) of the first clamping ring (99). 9), the second clamping ring (89) is provided with a fifth clamping rod (85), a sixth clamping rod (86), a seventh clamping rod (87) and an eighth clamping rod (88), the first end of the seventh clamping rod (87) is connected to the fifth clamping rod (85) through a third transition rod (73), the second end of the seventh clamping rod (87) is connected to the eighth clamping rod (88) through a second cross rod (76), the sixth clamping rod (86) is connected to the eighth clamping rod (88) through a fourth transition rod (74), the third clamping rod (96) is connected to the fifth clamping rod (85), and the fourth clamping rod (97) is connected to the sixth clamping rod (86); Or the second clamping ring (89) is provided with a seventh clamping rod (87) and an eighth clamping rod (88), the first end of the seventh clamping rod (87) is connected to the third clamping rod (96) via a third transition rod (73), the second end of the seventh clamping rod (87) is connected to the eighth clamping rod (88) via a second cross rod (76), and the fourth clamping rod (97) is connected to the eighth clamping rod (88) via a fourth transition rod (74).

5. The hand restraint belt according to claim 4, characterized in that: The wristband (1) is provided with a first binding strap (80) and a second binding strap (98); one end of the first binding strap (80) is fixed to the first cross bar (75), and one end of the second binding strap (98) is fixed to the second cross bar (76); the first binding strap (80) and the second binding strap (98) bind the wristband (1) to different positions.

6. The hand restraint belt according to any one of claims 1 to 5, characterized in that: The restraining airbag (4) is provided with an inner cavity (40) and an outer cavity (41); the outer cavity (41) is connected to the outside through the air hole (7); a first one-way valve (42) is provided between the outer cavity (41) and the inner cavity (40); the inner cavity (40) is provided with an exhaust hole (77) and the exhaust hole (77) is provided with a second one-way valve (43); the exhaust hole (77) is located away from the palm piece (3).

7. The hand restraint belt according to claim 6, characterized in that: An anti-scratch plate (5) is provided on the side of the restraining airbag (4) away from the palm plate (3), and the outer surface of the anti-scratch plate (5) is in a hemispherical shape.

8. The hand restraint belt according to claim 7, characterized in that: The restraining airbag (4) adopts a double-layer structure including an inner shell (44) and an outer shell (45); the outer cavity (41) is located between the inner shell (44) and the outer shell (45); the inner cavity (40) is located inside the inner shell (44); the first one-way valve (42) is arranged on the inner shell (44); the outer shell (45) is provided with a first channel (46) so that the inner cavity (40) is directly connected to the outside of the outer shell (45) through the first channel (46); and the second one-way valve (43) is arranged in the first channel (46) to control the airflow of the first channel (46).

9. The hand restraint belt according to claim 8, characterized in that: A first air valve (27) is provided at the position of the first one-way valve (42), and the first air valve (27) is provided with a first control rod (28). At least a part of the structure of the first control rod (28) is located outside the housing (45) so that the opening and closing of the first air valve (27) can be controlled outside the housing (45). The first channel (46) is provided with a second air valve (37), and the second air valve (37) controls the opening and closing of the first channel (46).

10. The hand restraint belt according to claim 9, characterized in that: The shell (45) is provided with a plurality of protruding balls (52), the protruding balls (52) and the air holes (7) are arranged at intervals, the protruding balls (52) protrude a certain height both outwardly and inwardly from the shell (45), the anti-scratch plate (5) is connected to the restraining airbag (4), and a second channel (47) communicating with the first channel (46) is provided on the anti-scratch plate (5), and a side air hole (7) is provided on a side wall of the second channel (47).

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