A wearable device for suppressing arm tremors

Abstract

In the field of medical wearable devices, the present invention provides a wearable device for suppressing arm tremors, comprising a flexible wristband and a nonlinear vibration suppression component. Four nonlinear vibration suppression components are evenly distributed around the outer wall of the flexible wristband. The nonlinear vibration suppression components are detachably mounted on the flexible wristband. The nonlinear vibration suppression components capture and consume vibration energy through a targeted energy transfer mechanism. The nonlinear vibration suppression components utilize their own strong nonlinear stiffness to form a resonant capture behavior with the natural frequency of the main vibration system, transferring the energy of the main vibration system to the NES through targeted energy transfer and dissipating it through damping. Most of the energy does not return from the NES to the main vibration system, achieving one-way energy transfer, thereby preventing arm tremors.

Description

Technical Field

[0001] The present invention relates to the field of medical wearable devices, and in particular to a wearable device for suppressing arm tremors. Background Art

[0002] Pathological tremor is a movement disorder that can be caused by a variety of conditions. Patients experience involuntary, rhythmic shaking around joints in various parts of the body, including the arms and wrists. In daily life, not only are basic physiological needs like washing and eating severely impacted, but their physical and mental health is also severely impacted, and they may even develop psychological disorders such as depression.

[0003] Common tremor suppression methods include medication, surgery, and rehabilitation training. Medication is slow to take effect and can cause side effects such as addiction with long-term use. Surgery carries significant risks and is expensive, making it financially unaffordable for ordinary families. While rehabilitation therapy can alleviate tremor to some extent, its effectiveness is largely limited by the training period and the expertise of rehabilitation institutions and practitioners. Therefore, wearable devices have become a major research focus for suppressing pathological tremor.

[0004] Existing wearable devices for tremor suppression primarily include exoskeletons, soft robots, gyroscopes, magnetorheological fluid devices, tuned mass dampers, and particle dampers. However, these devices are often costly, complex, bulky, and heavy, with limited vibration suppression effectiveness and a design that struggles to meet modern aesthetic standards. Summary of the Invention

[0005] To address the above-mentioned issues, the present invention provides a wearable device for suppressing arm tremor. Based on a nonlinear energy sink (NES), the device utilizes its strong nonlinear stiffness to form a resonant capture behavior with the natural frequency of the main vibration system. Energy from the main vibration system is transferred to the NES in a targeted energy transfer manner and dissipated through damping. Most of the energy does not return from the NES to the main vibration system, achieving one-way energy transfer, thereby achieving arm tremor prevention. Specifically, the device includes:

[0006] A wearable device for suppressing arm tremor, comprising a flexible wristband and a nonlinear vibration suppression component;

[0007] Four nonlinear vibration suppression components are evenly distributed around the outer wall of the flexible bracelet;

[0008] The nonlinear vibration suppression component is detachably mounted on the flexible wristband;

[0009] The nonlinear vibration suppression component captures vibration energy through a targeted energy transfer mechanism and consumes the captured vibration energy.

[0010] Preferably, the nonlinear vibration suppression assembly includes a shell, a mass block, an elastic member and a slide rail assembly;

[0011] The housing is a square housing with a square cavity provided inside, and the top cover of the housing supports disassembly;

[0012] Elastic members are respectively provided on two opposite side walls of the mass block, one end of the elastic member is mounted on the mass block, and the other end of the elastic member is mounted on the inner side wall of the adapted housing; the mass block supports linear reciprocating sliding on the slide rail assembly, and the two ends of the slide rail assembly are respectively mounted on the inner side wall of the housing;

[0013] The bottom of the mass block is suspended in the air. When the nonlinear vibration suppression component is not working, the position relationship between the slide rail component and the elastic member is vertically arranged in a spatial cross, and the mass block is stationary at the center of the square cavity.

[0014] Preferably, the elastic member is a tension spring, one end of which is mounted on the mass block, and the other end of which is mounted on the inner side wall of the adapted housing;

[0015] Wherein, a lug for mounting the tension spring is provided on the inner wall of the shell, and a lug for mounting the tension spring is provided on the side wall of the mass block;

[0016] When the mass block moves on the slide rail assembly, the two tension springs are deformed and generate a nonlinear restoring force.

[0017] Preferably, the elastic member includes: a locking nut, a pre-tightening nut, a roller, a mounting structure, a connecting shaft, a deep groove ball bearing, a connecting rod, a telescopic shaft, a compression spring and a friction plate;

[0018] The compression spring is sleeved on the connecting rod, one end of the connecting rod is mounted on the mass block through the mounting structure, and the other end of the connecting rod is mounted on the inner side wall of the housing through the mounting structure;

[0019] The mounting structure is a U-shaped hanging ear arrangement, a connecting shaft is arranged between the two parallel plates of the mounting structure, the roller is sleeved on the connecting shaft, the deep groove ball bearings are respectively arranged at both ends of the connecting shaft, and the deep groove ball bearings are arranged between the roller and the mounting structure;

[0020] In a direction from the connecting rod to the mass block, the pre-tightening nut and the anti-loosening nut are sequentially arranged at one end of the connecting rod close to the mass block, and the pre-tightening nut and the anti-loosening nut are arranged between the compression spring and the mounting structure;

[0021] The friction plate is arranged on the inner side wall of the housing for mounting the mounting structure;

[0022] When the mass block moves on the slide rail assembly, the connecting rods are fixedly connected to both sides of the mass block by screws, and the mass block drives the connecting rods on both sides to perform translational reciprocating motion along the axial direction of the slide rail assembly;

[0023] A telescopic shaft is built into the connecting rod on one side close to the friction plate. The telescopic shaft is embedded in a reserved hole at one end of the connecting rod. The telescopic shaft and the connecting rod are coaxially arranged, and the telescopic shaft and the reserved hole are clearance-fitted.

[0024] When the connecting rod and the mass block move axially along the slide rail assembly, the connecting rod drives the roller to reciprocate on the friction plate, and the roller always remains tangent to the friction plate. The friction plate is arc-shaped, and the distance between the friction plate surface and the slide rail assembly gradually decreases from the center to both sides along the friction plate surface.

[0025] When the mass block moves away from the center of the housing, the mounting structure close to the friction plate moves toward the mass block, and the mounting structure drives the telescopic shaft to retract into the reserved hole inside the connecting rod, and the compression spring is compressed;

[0026] When the mass moves toward the center of the housing, the mounting structure near the friction plate moves toward the middle recess of the friction plate, the telescopic shaft extends from the reserved hole inside the connecting rod, and the compression amount of the compression spring decreases.

[0027] Wherein, the roller and the friction plate are kept tangent at all times.

[0028] Preferably, the elastic member includes a fixing structure and a steel wire rope;

[0029] One end of the steel wire rope is fixed to the side wall of the mass block through a fixing structure, and the other end of the steel wire rope is installed on the inner side wall of the housing through the fixing structure;

[0030] When the mass block moves on the slide rail assembly, the steel wire rope is deformed and outputs a nonlinear restoring force.

[0031] Preferably, the slide rail assembly comprises: a sliding guide rail, a linear bearing and a gasket;

[0032] A gasket is provided at each end of the sliding guide rail, one end of the sliding guide rail is mounted on the inner side wall of the housing where the elastic member is not mounted, and the other end of the sliding guide rail is mounted on the other inner side wall of the housing where the elastic member is not mounted, and the mass block is sleeved on the sliding guide rail and supports movement along the sliding guide rail;

[0033] Wherein, the linear bearing sleeve is arranged on the sliding guide rail and a linear bearing is arranged on each side of the mass block.

[0034] Preferably, the number of the slide rail assembly is one.

[0035] Preferably, there are two slide rail assemblies, and the two slide rail assemblies are arranged in parallel.

[0036] Preferably, the nonlinear vibration suppression component is installed on the flexible bracelet through a flexible cloth bag.

[0037] Preferably, the nonlinear vibration suppression component is mounted on the flexible bracelet via a clip.

[0038] Compared with the prior art, the above technical solution has at least the following beneficial effects:

[0039] 1. The present invention is more effective in suppressing human arm tremors than other traditional passive nonlinear vibration suppression components.

[0040] 2. The present invention effectively reduces the damping force of the nonlinear energy well by using rolling friction, thereby ensuring the vibration suppression effect, making the device suitable for suppressing micro-vibrations of the human arm.

[0041] 3. The present invention has a simple structure, is compact and lightweight, requires little space to wear, and avoids restrictions on human movement when worn by patients.

[0042] 4. The present invention can select different internal structures and the number of nonlinear vibration suppression components according to different wearing scenarios and tremor levels, so as to achieve flexible adjustment of the device structure and maximize the wearing comfort and vibration suppression effect of the patient.

[0043] 5. The nonlinear energy sink (NES) utilizes its strong nonlinear stiffness to form a resonant capture behavior with the natural frequency of the primary vibration system. This transfers the primary vibration system's energy into the NES through targeted energy transfer, dissipating it through damping. Most of the energy does not return from the NES to the primary vibration system, achieving a one-way energy transfer. Compared to traditional linear vibration damping devices, this invention, based on the targeted energy transfer mechanism of the NES, can effectively broaden the vibration suppression frequency band and achieve better vibration suppression results. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 A schematic diagram of the appearance of a wearable device provided in an embodiment of the present application;

[0046] Figure 2 A schematic diagram of the appearance of a wearable device provided in an embodiment of the present application;

[0047] Figure 3 A schematic diagram of the appearance of a nonlinear vibration suppression component provided in an embodiment of the present application;

[0048] Figure 4 A schematic diagram of the internal structure of a nonlinear vibration suppression component provided in an embodiment of the present application;

[0049] Figure 5 A schematic structural diagram of a slide rail assembly of a nonlinear vibration suppression assembly provided in an embodiment of the present application;

[0050] Figure 6 A nonlinear restoring force-displacement curve diagram generated by the nonlinear vibration suppression component provided in an embodiment of the present application;

[0051] Figure 7 A graph showing the time-history angular displacement of the shoulder joint before and after the installation of the nonlinear vibration suppression assembly provided in an embodiment of the present application;

[0052] Figure 8 A graph showing the time-history angular displacement of the elbow joint before and after the installation of the nonlinear vibration suppression assembly provided in an embodiment of the present application;

[0053] Figure 9 This is a graph showing the attenuation of the root mean square value of the shoulder joint angular displacement before and after the installation of the nonlinear vibration suppression component provided in an embodiment of the present application;

[0054] Figure 10 This is a diagram showing the attenuation of the RMS value of the elbow joint angular displacement before and after the installation of the nonlinear vibration suppression component provided in an embodiment of the present application;

[0055] Figure 11 A schematic diagram of the internal structure of a nonlinear vibration suppression component provided in an embodiment of the present application;

[0056] Figure 12 A schematic diagram of the roller structure of the nonlinear vibration suppression assembly provided in an embodiment of the present application;

[0057] Figure 13A schematic diagram of the connecting rod structure of the nonlinear vibration suppression assembly provided in an embodiment of the present application;

[0058] Figure 14 A schematic diagram of the internal structure of a nonlinear vibration suppression component provided in an embodiment of the present application;

[0059] Figure 15 A schematic diagram of the connecting rod structure of the nonlinear vibration suppression assembly provided in an embodiment of the present application;

[0060] Figure 16 A schematic diagram of the internal structure of a nonlinear vibration suppression component provided in an embodiment of the present application;

[0061] Figure 17 A schematic structural diagram of a slide rail assembly of a nonlinear vibration suppression assembly provided in an embodiment of the present application;

[0062] Figure 18 A schematic diagram of the internal structure of a nonlinear vibration suppression component provided in an embodiment of the present application;

[0063] Reference numerals:

[0064] 1. Flexible wristband; 2. Flexible cloth bag; 3. Clip; 4. Nonlinear vibration suppression component; 5. Housing; 51. Top cover; 6. Mass block; 7. Elastic part; 710. Tension spring; 720. Friction plate; 721. Locknut; 722. Pre-tightening nut; 723. Roller; 724. Mounting structure; 725. Connecting shaft; 726. Deep groove ball bearing; 727. Connecting rod; 728. Telescopic shaft; 729. Compression spring; 730. Wire rope; 81. Sliding guide; 82. Linear bearing; 83. Gasket. DETAILED DESCRIPTION

[0065] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0067] It should be noted that the terms "up", "down", "left", "right", "front" and "back" used in the present invention are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0068] Existing wearable devices for tremor suppression primarily include exoskeleton robots, soft robots, gyroscopes, magnetorheological fluid devices, tuned mass dampers, and particle dampers. However, these devices are often costly, complex, bulky, and heavy, with limited vibration suppression effectiveness and a design that struggles to meet modern aesthetic standards. Therefore, there is an urgent need for a wearable device for arm tremor suppression. The present application proposes a wearable device that is compact, lightweight, simple in structure, and exhibits excellent vibration suppression performance.

[0069] The wearable device of this application is based on the principle of nonlinear elasticity. The nonlinear energy sink (NES) uses its own strong nonlinear stiffness to form a resonant capture behavior with the natural frequency of the main vibration system. The energy of the main vibration system is transferred to the NES in a targeted energy transfer manner and dissipated through damping. Most of the energy does not return from the NES to the main vibration system, achieving a one-way energy transfer. Compared with traditional linear vibration reduction devices, the present invention, based on the targeted energy transfer mechanism of the NES, can effectively broaden the vibration suppression frequency band and achieve a better vibration suppression effect. A wearable device for suppressing arm tremors is proposed. The specific content is as follows:

[0070] like Figures 1 to 2 As shown, the device includes a flexible wristband 1 and nonlinear vibration suppression components 4. Four nonlinear vibration suppression components 4 are evenly distributed around the outer wall of the flexible wristband 1. The flexible wristband 1 is designed to be worn on the arm. Because arms vary in thickness, the flexible material used not only ensures a better fit but also accommodates individual wearers. When the wristband is worn on an arm, the four nonlinear vibration suppression components 4 absorb vibration energy from the arm in four directions: up, down, left, and right, preventing and treating arm tremors.

[0071] Among them, the nonlinear vibration suppression component 4 is detachably mounted on the flexible bracelet 1; there are many detachable installation methods, such as a clip 3 or a flexible cloth bag 2. The specific installation methods and assembly methods are all existing technologies and will not be elaborated in this application.

[0072] The nonlinear vibration suppression component 4 captures vibration energy through a targeted energy transfer mechanism and consumes the captured vibration energy.

[0073] The nonlinear vibration suppression component 4 uses its own strong nonlinear stiffness to form a resonant capture behavior with the natural frequency of the main vibration system, transfers the energy of the main vibration system to the NES in a targeted energy transfer manner, and dissipates it through damping. Most of the energy will not return to the main vibration system from the NES, realizing one-way energy transfer.

[0074] like Figures 6 to 10 As shown, the magnitude of the nonlinear restoring force is related to the displacement of mass block 6 in nonlinear vibration suppression assembly 4. Performing a Taylor series expansion of the analytical expression near the zero displacement point yields an approximate nonlinear restoring force-displacement curve. The higher the number of expansions, the closer the approximate curve is to the exact curve.

[0075] The nonlinear vibration suppression component 4 of the present application provides multiple implementations. Installing different types of nonlinear vibration suppression components 4 will have different effects on controlling tremors in the human arm.

[0076] Under multi-frequency excitation conditions, by comparing the time domain dynamic response results of the human arm before and after installing different types of nonlinear vibration suppression components 4, it can be found that after wearing the present invention, the angular displacement of the shoulder joint and the angular displacement of the elbow joint are greatly reduced compared with not wearing the nonlinear vibration suppression component 4; compared with the nonlinear vibration suppression component 4 invented based on the vibration suppression principle of the traditional linear vibration absorber (TMD), the present invention is based on the targeted energy transfer mechanism of the nonlinear energy sink (NES). Under the same excitation conditions, it can suppress the angular displacement response of the shoulder joint and elbow joint to a greater extent, achieving a better vibration suppression effect.

[0077] Considering that the time-domain angular displacement curve may not directly reflect the difference in arm tremor suppression effectiveness between the present invention and the nonlinear vibration suppression assembly 4 invented based on the traditional linear vibration absorber (TMD) vibration suppression principle, the root mean square (RMS) values ​​of the time-domain dynamic response results of the shoulder and elbow joints are used as an evaluation indicator of the vibration suppression effectiveness. The attenuation rate of the RMS value can directly reflect the degree of vibration energy reduction, thereby measuring the control effect of different nonlinear vibration suppression assemblies 4 on human arm tremor. Compared to the condition without the nonlinear vibration suppression assembly 4, the RMS values ​​of the angular displacements of the shoulder and elbow joints decreased by 26.50% and 14.47%, respectively, after wearing the present invention. However, after wearing the nonlinear vibration suppression assembly 4 invented based on the traditional linear vibration absorber (TMD) vibration suppression principle, the RMS values ​​of the angular displacements of the shoulder and elbow joints decreased by only 22.18% and 10.29%, respectively. This shows that under the same excitation conditions, the present invention, i.e., the nonlinear energy sink (NES), has a better vibration suppression effect on human arm tremor.

[0078] like Figures 3 to 18 As shown, an embodiment of the nonlinear vibration suppression component 4, the nonlinear vibration suppression component 4 includes a shell 5, a mass block 6, an elastic member and a slide rail assembly;

[0079] The housing 5 is a square housing 5 with a square cavity provided inside. The top cover 51 of the housing 5 supports disassembly.

[0080] Elastic members are respectively provided on two opposite side walls of the mass block 6, one end of the elastic member is mounted on the mass block 6, and the other end of the elastic member is mounted on the inner side wall of the adapted housing 5; the mass block 6 supports linear reciprocating sliding on the slide rail assembly, and the two ends of the slide rail assembly are respectively mounted on the inner side wall of the housing 5;

[0081] Among them, the bottom of the mass block 6 is suspended in the air. When the nonlinear vibration suppression component 4 is not working, the position relationship between the slide rail component and the elastic member is vertically arranged in a spatial cross, and the mass block 6 is stationary at the center position in the square cavity.

[0082] The specific implementation of the nonlinear vibration suppression component 4 includes: the shell 5 is a rectangular shell 5, the top cover 51 of the shell 5 supports disassembly, the top cover 51 of the shell 5 is fixed to the shell 5 by screws, and the slide rail assembly is arranged on the central axis in the width direction of the shell 5. When this component is not working, the mass block 6 is arranged in the middle position of the slide rail assembly. At the same time, the center of the mass block 6 is located at the center position of the square cavity of the shell 5. On both sides of the mass block 6, an elastic member is arranged respectively, and the connection line of the two elastic members is on the central axis in the length direction of the shell 5. One end of the elastic member is connected to the mass block 6, and the other end of the elastic member is connected to the inner wall corresponding to the square cavity. In this way, the connection line of the elastic member and the center line of the slide rail assembly are vertical in space. When the nonlinear vibration suppression component 4 is not working, the center of the mass block 6 is located at the center point of the vertical intersection of the cross.

[0083] In one embodiment, the elastic member is a tension spring 710, one end of which is mounted on the mass block 6, and the other end of which is mounted on the inner side wall of the adapted shell 5; wherein, a lug for mounting the tension spring 710 is provided on the inner wall of the shell 5, and a lug for mounting the tension spring 710 is provided on the side wall of the mass block 6; when the mass block 6 moves on the slide rail assembly, the two tension springs 710 are deformed and generate a nonlinear restoring force.

[0084] In another embodiment, the elastic member includes: a locking nut 721, a pre-tightening nut 722, a roller 723, a mounting structure 724, a connecting shaft 725, a deep groove ball bearing 726, a connecting rod 727, a telescopic shaft 728, a compression spring 729 and a friction plate 720;

[0085] The compression spring 729 is sleeved on the connecting rod 727, one end of the connecting rod 727 is mounted on the mass block 6 through the mounting structure 724, and the other end of the connecting rod 727 is mounted on the inner wall of the shell 5 through the mounting structure 724; the mounting structure 724 is a U-shaped hanging ear setting, and a connecting shaft 725 is set between the two parallel plates of the mounting structure 724, the roller 723 is sleeved on the connecting shaft 725, and the deep groove ball bearings 726 are respectively set at both ends of the connecting shaft 725, and the deep groove ball bearings 726 are set between the roller 723 and the mounting structure. structure 724; in the direction from the connecting rod 727 to the mass block 6, the pre-tightening nut 722 and the anti-loosening nut 721 are sequentially arranged at one end of the connecting rod 727 close to the mass block 6, and the pre-tightening nut 722 and the anti-loosening nut 721 are arranged between the compression spring 729 and the mounting structure 724; the friction plate 720 is arranged on the inner side wall of the shell 5 for mounting the mounting structure 724; when the mass block 6 moves on the slide rail assembly, the mass block 6 drives the connecting rods 727 on both sides to move, wherein the connecting rod 727 has a built-in telescopic shaft 728.

[0086] In this embodiment, the structure of the elastic member is:

[0087] A telescopic shaft 728 is disposed within the central axis of a connecting rod 727. Mounting structures 724 are provided on both sides of the connecting rod 727. One end of the connecting rod 727, through the mounting structure 724, is in constant contact with a friction plate 720 disposed on the inner sidewall of the housing 5. The component in constant contact with the friction surface is a roller 723 mounted within the mounting structure 724. The other end of the connecting rod 727 is mounted to the corresponding sidewall of the mass 6 through the mounting structure 724. Mounting structures 724 are sequentially provided on the connecting rod 727 along one side of the mass 6, from the inner sidewall of the housing 5 to the sidewall of the mass 6. A compression spring 729, a preload nut 722, a locknut 721, and a mounting structure 724 are provided. Each mounting structure 724 contains a roller 723, with deep groove ball bearings 726 at each end. The rollers 723 are sleeved onto a connecting shaft 725 in the center of the mounting structure 724. In fact, the mounting structure 724, the connecting shaft 725, the roller 723 and the deep groove ball bearing 726 constitute a hinge structure. In addition, the installation method of the related applications of the anti-loosening nut 721 and the pre-tightening nut 722 set on the connecting rod 727 is the same as the principle in the prior art, and will not be elaborated in this application.

[0088] During the movement of the slide rail assembly, the mass block 6 drives the connecting rods 727 on both sides to move. To ensure that the roller 723 is always in contact with the friction plate 720, the telescopic shaft 728 changes the telescopic amount, thereby changing the deformation of the compression spring 729, and then outputting a nonlinear restoring force. The telescopic shaft 728 is telescopically extended in the following manner: the telescopic shaft 728 is nested in the reserved hole at one end of the connecting rod 727 near the friction plate 720. When the mass block 6 moves away from the center position, the mounting structure 724 moves toward the side of the mass block 6, driving the telescopic shaft 728 to retract into the reserved hole inside the central axis of the connecting rod 727, and the compression spring 729 is further compressed; when the mass block 6 moves toward the center position, the mounting structure 724 moves toward the side close to the friction plate 720, driving the telescopic shaft 728 to extend out of the reserved hole inside the central axis of the connecting rod 727, and the compression amount of the compression spring 729 is reduced. Through the above movement process, the telescopic shaft 728 is continuously extended and retracted, and the roller 723 and the friction plate 720 are always kept tangent. A telescopic shaft 728 is built into the side of the connecting rod 727 close to the friction plate 720. The telescopic shaft 728 is nested in the reserved hole at one end of the connecting rod 727 and is coaxially matched with the connecting rod 727. The telescopic shaft 728 and the reserved hole are clearance-fitted.

[0089] In this embodiment, the connecting rod 727 has a pre-reserved hole built into the end near the friction plate, which is used to mount a telescopic shaft 728. The specific structure of the telescopic shaft 728 is based on existing technology. In this application, the telescopic shaft 728 is elastically configured to extend and retract according to the pressure applied to it. Because the mounting structure 724 is connected to the inner wall of the housing by abutment, a friction plate 720 is provided on the inner wall of the housing 5 for mounting the mounting structure 724. Friction plates 720 are also provided on the inner wall of the housing 5 on both sides of the mass 6. The arc-shaped arrangement of the two friction plates 720 forms a "()" shape. When the device is not in operation, the mass 6 is positioned at the center of the "()".

[0090] In this embodiment, when the mass block 6 moves, the side of the connecting rod 727 close to the mass block 6 rotates around the connecting shaft 725, driving the roller 723 to reciprocate on the surface of the friction plate 720. The friction plate 720 is arc-shaped. Along the surface of the friction plate 720, the distance between the surface of the friction plate 720 and the slide rail assembly gradually decreases from the center to the sides. In order to keep the roller 723 and the friction plate 720 tangential at all times, when the mass block 6 moves away from the center position, the mounting structure 724 moves toward the side of the mass block 6, driving the telescopic shaft 728 to retract into the reserved hole inside the central axis of the connecting rod 727, and the compression spring 729 is further compressed; when the mass block 6 moves toward the center position, the mounting structure 724 moves toward the side close to the friction plate 720, driving the telescopic shaft 728 to extend out of the reserved hole inside the central axis of the connecting rod 727, and the compression amount of the compression spring 729 decreases. Through the above movement process, the telescopic shaft 728 is continuously extended and retracted, and the roller 723 and the friction plate 720 are always kept tangential.

[0091] In another preferred embodiment, on the connecting rod 727 and in the connecting section between the connecting rod 727 and the mass block 6, the connection method of the connecting rod 727 and the mass block 6 can be other structures. For example, the flexibility of the hinge may limit the performance of the nonlinear vibration suppression component 4. Therefore, the connection method of the connecting rod 727 and the mass block 6 is changed, and the connecting rod 727 is fixed to the side of the mass block 6 with screws, while keeping the roller 723 always in contact with the friction plate 720; the compression spring 729 is sleeved on the connecting rod 727, and the two ends of the mass block 6 are respectively in contact with the pre-tightening nut 722 and the roller 723 mounting structure 724; during the movement of the mass block 6 along the guide rail, the deformation of the compression spring 729 changes, thereby outputting a nonlinear restoring force according to the shape of the friction plate 720.

[0092] In another embodiment, the elastic member includes a fixed structure and a steel wire rope 730; one end of the steel wire rope 730 is fixed to the side wall of the mass block 6 through the fixed structure, and the other end of the steel wire rope 730 is installed on the inner wall of the shell 5 through the fixed structure; when the mass block 6 moves on the slide rail assembly, the steel wire rope 730 is deformed and outputs a nonlinear restoring force.

[0093] According to actual usage, a structural scheme in which the wire rope 730 outputs nonlinear restoring force can be adopted; in this embodiment, the fixing device of the wire rope 730 can be a "convex" mounting block, and fixing structures are set at both ends of the wire rope 730, one end is used to fix one end of the wire rope 730 on the inner wall of the shell 5, and the other end is used to fix the other end of the wire rope 730 on the side wall of the mass block 6. The fixing method of the wire rope 730 and the "convex" mounting block can be achieved by screws.

[0094] When the mass block 6 moves on the slide rail assembly, the steel wire rope 730 will deform, thereby outputting a linear restoring force to offset the vibration.

[0095] In a preferred embodiment, the slide rail assembly includes: a sliding guide rail 81, a linear bearing 82 and a gasket 83;

[0096] A gasket 83 is provided at each end of the sliding guide rail 81. One end of the sliding guide rail 81 is mounted on the inner side wall of the housing 5 where the elastic member is not mounted, and the other end of the sliding guide rail 81 is mounted on the other inner side wall of the housing 5 where the elastic member is not mounted. The mass block 6 is sleeved on the sliding guide rail 81 and supported to move along the sliding guide rail 81.

[0097] The linear bearing 82 is sleeved on the sliding guide rail 81 and a linear bearing 82 is provided on each side of the mass block 6. The number of the slide rail assembly is one.

[0098] In another preferred embodiment, based on actual usage, a double guide rail structure is adopted to prevent the mass block 6 from deflecting during movement; the number of the guide rail assemblies is two, and the two guide rail assemblies are arranged in parallel.

[0099] As described above, a wearable device for suppressing human arm tremor, according to the working principle of the nonlinear energy well, the initial position of a single nonlinear vibration suppression component 4 is that the spring is in a horizontal position. When the patient wears the device, the arm tremors, that is, the nonlinear vibration suppression component 4 is stimulated by the outside world. At this time, the mass block 6 will reciprocate along the sliding guide rail 81, and the elastic part will deform, thereby generating a nonlinear restoring force. The vibration energy is captured by the targeted energy transfer mechanism, and then the captured vibration energy is consumed by the friction damping in the nonlinear vibration suppression component 4, thereby suppressing the human arm tremor.

[0100] The present invention is superior to other traditional passive nonlinear vibration suppression components 4 in suppressing human arm tremors. By using rolling friction, the present invention effectively reduces the damping force of the nonlinear energy well, ensuring the vibration suppression effect, making the device suitable for suppressing micro-vibrations in the human arm. The present invention has a simple structure, is compact and lightweight, and requires a small wearing space, avoiding restrictions on human movement when worn by the patient. The present invention can select different internal structures and the number of nonlinear vibration suppression components 4 according to different wearing scenarios and tremor levels, achieving flexible adjustment of the device structure and maximizing the patient's wearing comfort and vibration suppression effect.

[0101] The following points need to be explained:

[0102] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0103] (2) For the sake of clarity, the thickness of layers or regions in the drawings used to describe the embodiments of the present invention are exaggerated or reduced, that is, these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or intervening elements may be present.

[0104] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0105] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A wearable device for suppressing arm tremor, characterized in that: Including a flexible wristband and a nonlinear vibration suppression component; Four nonlinear vibration suppression components are evenly distributed around the outer wall of the flexible bracelet; The nonlinear vibration suppression component is detachably mounted on the flexible wristband; The nonlinear vibration suppression component captures vibration energy through a targeted energy transfer mechanism and consumes the captured vibration energy; The nonlinear vibration suppression component includes a shell, a mass block, an elastic member and a slide rail component; The housing is a square housing with a square cavity provided inside, and the top cover of the housing supports disassembly; Elastic members are respectively provided on two opposite side walls of the mass block, one end of the elastic member is mounted on the mass block, and the other end of the elastic member is mounted on the inner side wall of the adapted housing; the mass block supports linear reciprocating sliding on the slide rail assembly, and the two ends of the slide rail assembly are respectively mounted on the inner side wall of the housing; The elastic member is a tension spring, one end of which is mounted on the mass block, and the other end of which is mounted on the inner side wall of the adapted housing; The elastic member includes: a locking nut, a pre-tightening nut, a roller, a mounting structure, a connecting shaft, a deep groove ball bearing, a connecting rod, a telescopic shaft, a compression spring and a friction plate; The compression spring is sleeved on the connecting rod, one end of the connecting rod is mounted on the mass block through the mounting structure, and the other end of the connecting rod is mounted on the inner side wall of the housing through the mounting structure; The mounting structure is a U-shaped hanging ear arrangement, a connecting shaft is arranged between the two parallel plates of the mounting structure, the roller is sleeved on the connecting shaft, the deep groove ball bearings are respectively arranged at both ends of the connecting shaft, and the deep groove ball bearings are arranged between the roller and the mounting structure; In a direction from the connecting rod to the mass block, the pre-tightening nut and the anti-loosening nut are sequentially arranged at one end of the connecting rod close to the mass block, and the pre-tightening nut and the anti-loosening nut are arranged between the compression spring and the mounting structure; The friction plate is arranged on the inner side wall of the housing for mounting the mounting structure.

2. The wearable device for suppressing arm tremor according to claim 1, characterized in that: The bottom of the mass block is suspended in the air. When the nonlinear vibration suppression component is not working, the position relationship between the slide rail component and the elastic member is vertically arranged in a spatial cross, and the mass block is stationary at the center of the square cavity.

3. The wearable device for suppressing arm tremor according to claim 2, characterized in that: A lug for mounting the tension spring is provided on the inner wall of the housing, and a lug for mounting the tension spring is provided on the side wall of the mass block; When the mass block moves on the slide rail assembly, the two tension springs are deformed and generate a nonlinear restoring force.

4. The wearable device for suppressing arm tremor according to claim 2, characterized in that: When the mass block moves on the slide rail assembly, the connecting rods are fixedly connected to both sides of the mass block by screws, and the mass block drives the connecting rods on both sides to perform translational reciprocating motion along the axial direction of the slide rail assembly; A telescopic shaft is built into the connecting rod on one side close to the friction plate. The telescopic shaft is embedded in a reserved hole at one end of the connecting rod. The telescopic shaft and the connecting rod are coaxially arranged, and the telescopic shaft and the reserved hole are clearance-fitted. When the connecting rod and the mass block move axially along the slide rail assembly, the connecting rod drives the roller to reciprocate on the friction plate, and the roller always remains tangent to the friction plate; The friction plate is arc-shaped, and the distance between the friction plate surface and the slide rail assembly gradually decreases from the center to both sides of the friction plate. When the mass block moves away from the center of the housing, the mounting structure close to the friction plate moves toward the mass block, and the mounting structure drives the telescopic shaft to retract into the reserved hole inside the connecting rod, and the compression spring is compressed; When the mass moves toward the center of the housing, the mounting structure near the friction plate moves toward the middle recess of the friction plate, the telescopic shaft extends from the reserved hole inside the connecting rod, and the compression amount of the compression spring decreases. Wherein, the roller and the friction plate are kept tangent at all times.

5. The wearable device for suppressing arm tremor according to claim 2, characterized in that: The elastic member includes a fixing structure and a steel wire rope; One end of the steel wire rope is fixed to the side wall of the mass block through a fixing structure, and the other end of the steel wire rope is installed on the inner side wall of the housing through the fixing structure; When the mass block moves on the slide rail assembly, the steel wire rope is deformed and outputs a nonlinear restoring force.

6. The wearable device for suppressing arm tremor according to claim 2, characterized in that: The slide rail assembly includes: a sliding guide rail, a linear bearing and a gasket; A gasket is provided at each end of the sliding guide rail, one end of the sliding guide rail is mounted on the inner side wall of the housing where the elastic member is not mounted, and the other end of the sliding guide rail is mounted on the other inner side wall of the housing where the elastic member is not mounted, and the mass block is sleeved on the sliding guide rail and supports movement along the sliding guide rail; Wherein, the linear bearing is sleeved on the sliding guide rail and a linear bearing is respectively provided on both sides of the mass block.

7. The wearable device for suppressing arm tremor according to claim 6, characterized in that: The number of the slide rail assembly is one.

8. The wearable device for suppressing arm tremor according to claim 1, characterized in that: There are two slide rail assemblies, and the two slide rail assemblies are arranged in parallel.

9. The wearable device for suppressing arm tremor according to claim 1, characterized in that: The nonlinear vibration suppression component is installed on the flexible wristband through a flexible cloth bag.

10. The wearable device for suppressing arm tremor according to claim 1, characterized in that: The nonlinear vibration suppression component is mounted on the flexible wristband via a clip.

Images