An anti-entanglement upper limb rotation rehabilitation device

Abstract

This application discloses an anti-entanglement upper limb rotation rehabilitation mechanism, belonging to the field of medical device technology. The rehabilitation mechanism includes a crank shaft, a main shaft, and a conductive slip ring. The inner ring of the conductive slip ring is detachably mechanically connected to the main shaft and can rotate with the main shaft; the outer ring is fixed, and the inner and outer rings can rotate relative to each other like a bearing, and both are provided with wiring terminals. The signal wire of the sensor can pass through the wiring groove and outlet hole inside the crank shaft and connect to the wiring terminal of the inner ring of the conductive slip ring; after the signal is transmitted from the inner ring to the outer ring, it is output by the signal wire of the outer ring, avoiding the signal wire from getting entangled with the fixed wire due to rotation when the shaft rotates, thus structurally solving the problem of signal wire entanglement during rotation. The crank shaft and the main shaft are detachably mechanically connected, and the inner ring of the conductive slip ring is also detachably connected to the main shaft, which facilitates the installation, replacement, and maintenance of components.

Description

Technical Field

[0001] This application relates to the field of medical rehabilitation technology, specifically to an anti-entanglement upper limb rotation rehabilitation mechanism. Background Technology

[0002] Upper and lower limb rehabilitation training equipment can maintain cardiovascular health, enhance muscle strength, increase joint flexibility, reduce stress and anxiety, and improve coordination and motor function. In addition, it can help patients control their weight.

[0003] Currently, for upper limb rehabilitation equipment and circular motion products, the arrangement of sensors on rotating components is often inadequate. This can cause the sensor signal wires to become tangled during rotation. This tangling stretches, compresses, or twists the copper core inside the signal wires, damaging their electrical properties (such as changes in resistance and capacitance). This results in errors in the sensor's output electrical signals (such as angle, torque, and pressure data), failing to accurately reflect the patient's movements or the equipment's status. Furthermore, the tangled signal wires exert additional tension or torque on the rotating shaft, which, over time, can wear down bearings, gears, and other mechanical components, accelerating mechanical wear and shortening the equipment's lifespan. Utility Model Content

[0004] The technical objective of this application is to provide an anti-entanglement upper limb rotation rehabilitation mechanism to address the problem that the signal wires of sensors may become tangled due to rotation when the shaft of current upper and lower limb rehabilitation training equipment rotates.

[0005] To achieve the above technical objectives, the embodiments of this application adopt the following technical solutions.

[0006] In a first aspect, embodiments of this application provide an anti-entanglement upper limb rotation rehabilitation mechanism, comprising:

[0007] A crank shaft (101) is provided, in which a first sensor (2) and a second sensor (3) can be installed, and the crank shaft (101) is provided with a wiring groove (1013) and a wire outlet hole (1014).

[0008] The main shaft (12) and the crank shaft (101) are located at the end of the main shaft (12) and are detachably mechanically connected to the main shaft (12);

[0009] The conductive slip ring (11) includes an inner ring and an outer ring that can rotate relative to each other. The inner ring is mechanically detachably connected to the main rotating shaft (12) and can rotate with it, while the outer ring is fixed. The signal lines of the first sensor (2) and the second sensor (3) can be connected to the inner ring of the conductive slip ring (11) through the wiring groove (1013) and the wire outlet hole (1014), and then output through the outer ring of the conductive slip ring (11).

[0010] Furthermore, the crankshaft (101) includes a first shaft body (1) and a second shaft body (4) connected to each other. The first shaft body (1) is provided with a first slot (1011) and a second slot (1012). The first sensor (2) and the second sensor (3) can be respectively embedded in the first slot (1011) and the second slot (1012).

[0011] Furthermore, the inner ring of the conductive slip ring (11) is provided with a mounting positioning hole (1101), and the main rotating shaft (12) is provided with a mounting hole (1201) at the corresponding position. The inner ring is fixed to the main rotating shaft (12) by fasteners passing through the mounting positioning hole (1101) and the mounting hole (1201).

[0012] Furthermore, the rehabilitation mechanism also includes a motor (10) and a reducer (18). A first bevel gear (16) is installed on the main shaft (12), and a second bevel gear (17) that meshes with the first bevel gear (16) is installed on the reducer (18) to transmit the driving force of the motor to the main shaft (12).

[0013] Furthermore, the rehabilitation mechanism also includes an angle sensor (14) on which a third bevel gear (19) is mounted. The third bevel gear (19) meshes with the first bevel gear (16) to detect the rotation angle of the main shaft (12) through the angle sensor (14).

[0014] Furthermore, the insulating portion between the signal line and the conductive slip ring (11) after passing through the outlet hole (1014) is fixed to the drive shaft (12) by insulating tape or cable ties.

[0015] Furthermore, the conductive slip ring (11) is a multi-channel design, and the conductive slip ring (11) contains multiple mutually insulated conductive paths, each of which is isolated by an insulating material.

[0016] Furthermore, the wiring groove (1013) is a tortuous wiring groove.

[0017] Secondly, embodiments of this application provide an anti-entanglement upper limb rotation rehabilitation mechanism, comprising:

[0018] Two crank shafts (101), each crank shaft (101) can house a first sensor (2) and a second sensor (3), and the crank shaft (101) is provided with a wiring groove (1013) and a wire outlet hole (1014);

[0019] The main shaft (12) and the two crank shafts (101) are respectively located at the two ends of the main shaft (12) and are detachably mechanically connected to the main shaft (12);

[0020] Two conductive slip rings (11) are provided corresponding to the two crank shafts (101);

[0021] Both conductive slip rings (11) include an inner ring and an outer ring that can rotate relative to each other. The inner ring is mechanically detachable from the main shaft (12) and can rotate with it, while the outer ring is fixed. The signal lines of the first sensor (2) and the second sensor (3) in the crank shaft (101) can be connected to the inner ring of the corresponding conductive slip ring (11) through the wiring groove (1013) and the wire outlet hole (1014), and then output through the outer ring of the corresponding conductive slip ring (11).

[0022] Compared with the prior art, the anti-entanglement upper limb rotation rehabilitation mechanism provided in this application embodiment has the following beneficial technical effects: the outer ring of the conductive slip ring is fixed, while the inner ring and outer ring can rotate relative to each other like a bearing. Furthermore, the inner ring of the conductive slip ring is fixed to the main rotating shaft and can rotate with the shaft. The sensor's signal line passes through the wiring groove and outlet hole inside the crank shaft and connects to the wiring point of the inner ring of the conductive slip ring. After the signal is transmitted from the inner ring to the outer ring, it is output by the signal line of the outer ring. The signal line rotates synchronously with the inner ring of the conductive slip ring and the main rotating shaft, while the outer ring and the connected external wiring remain fixed, preventing the signal line from entangled with the fixed wiring due to rotation during shaft rotation. This structurally solves the problem of signal line entanglement during rotation. The crank shaft and the main rotating shaft are detachably mechanically connected, and the inner ring of the conductive slip ring is also detachably connected to the main rotating shaft, facilitating component installation, replacement, and maintenance, and reducing equipment maintenance costs. Two crank shafts correspond to two conductive slip rings respectively, forming independent signal transmission paths, which can be adapted to left and right hand training respectively, resulting in a clear structural layout. Attached Figure Description

[0023] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this application in any way. Furthermore, the shapes and scales of the components in the drawings are merely illustrative to aid in understanding this application and do not specifically limit the shapes and scales of the components. Those skilled in the art, guided by the teachings of this application, can select various possible shapes and scales to implement this application according to specific circumstances. In the drawings:

[0024] Figure 1 The image is an isometric view of the upper and lower limb rehabilitation training device provided in the embodiment, wherein point I shows a schematic diagram of the anti-entanglement upper limb rotation rehabilitation mechanism;

[0025] Figure 2 for Figure 1The obtained partial view at point I;

[0026] Figure 3 for Figure 1 A top view of the upper and lower limb rehabilitation training equipment shown;

[0027] Figure 4 for Figure 3 Enlarged view of point I in the middle;

[0028] Figure 5 for Figure 2 Exploded view of the crankshaft;

[0029] Figure 6 for Figure 5 Axonometric view of the crankshaft;

[0030] Figure 7 for Figure 2 Axonometric view of the central main shaft;

[0031] Figure 8 for Figure 4 Axonometric view of the central conductive slip ring;

[0032] Figure 9 This is a schematic diagram of the signal line routing;

[0033] Figure 10 for Figure 9 Enlarged view of section II in the middle.

[0034] Reference numerals: 1. First rotating shaft body; 2. First sensor; 3. Second sensor; 4. Second rotating shaft body; 10. Motor; 11. Conductive slip ring; 12. Main rotating shaft; 13. Sheet metal part; 14. Angle sensor; 15. Bearing housing; 16. First bevel gear; 17. Second bevel gear; 18. Reducer; 19. Third bevel gear; 101. Crankshaft; 1011. First slot; 1012. Second slot; 1013. Wiring groove; 1014. Cable outlet hole; 1101. Mounting positioning hole; 1102. Mounting opening; 1201. Mounting hole. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0036] In the description of this application, 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 number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0037] To address the problem of sensor signal wires becoming entangled during rotation of the shaft in existing upper limb rotational rehabilitation mechanisms, this application provides an anti-entanglement upper limb rotational rehabilitation mechanism. For example... Figure 1 , Figure 2 and Figure 3 As shown, the anti-entanglement upper limb rotation rehabilitation mechanism includes a crank shaft 101, a main shaft 12, and a conductive slip ring 11. The crank shaft 101 can house a first sensor 2 and a second sensor 3, and has a wiring groove 1013 and a wire outlet hole 1014. The crank shaft 101 is located at the end of the main shaft 12 and is detachably mechanically connected to it. The conductive slip ring 11 includes an inner ring and an outer ring that can rotate relative to each other. The inner ring is detachably mechanically connected to the main shaft 12 and can rotate with it, while the outer ring remains stationary. The crank shaft 101 is mechanically connected to the main shaft 12, and the signal lines of the first sensor 2 and the second sensor 3 can be connected to the inner ring of the conductive slip ring 11 via the wiring groove 1013 and the wire outlet hole 1014, and then output via the outer ring of the conductive slip ring 11. Figure 2 The bearing housing 15 shown is mainly used to support and fix the main shaft 12 to ensure its rotational stability.

[0038] In some embodiments, such as Figure 5 and Figure 6 As shown, the crankshaft 101 includes a first shaft body 1 and a second shaft body 4 connected to each other. The first shaft body 1 is provided with a first slot 1011 and a second slot 1012. The first sensor 2 and the second sensor 3 can be respectively embedded in the first slot 1011 and the second slot 1012.

[0039] In this embodiment, the first rotating shaft body 1 and the second rotating shaft body 4 can be connected by a socket joint. For example... Figure 6 As shown, the wiring groove 1013 can be a tortuous wiring groove.

[0040] In this embodiment, the first sensor 2 and the second sensor 3 can be tension and compression sensors, which are installed in their respective grooves. When the user rotates the upper limb rehabilitation device, the magnitude of the force can be detected, and the signal can be transmitted through the signal line.

[0041] In some embodiments, such as Figure 7 and Figure 8As shown, the inner ring of the conductive slip ring 11 is provided with a mounting positioning hole 1101, and the main rotating shaft 12 is provided with a mounting hole 1201 at the corresponding position. The inner ring is fixed to the main rotating shaft 12 by fasteners passing through the mounting positioning hole 1101 and the mounting hole 1201.

[0042] In some embodiments, to fix the outer ring of the conductive slip ring 11, the outer ring of the conductive slip ring 11 is also provided with a mounting opening 1102, such as... Figure 8 As shown, the mounting opening 1102 can be an arched opening, connected to an external fixing structure via fasteners to keep the outer ring stationary. Both the inner and outer rings have connection points. In this embodiment, the external fixing structure can be as follows: Figure 4 Sheet metal part 13 shown.

[0043] In some embodiments, the main shaft 12 is as follows Figure 7 As shown, there are four mounting holes 1201 near each end, and each of these mounting holes 1201 is fitted with a conductive slip ring 11. Both ends of the main shaft 12 have crank shafts 101. The two conductive slip rings 11 are correspondingly set with the two crank shafts 101.

[0044] In this embodiment, after the signal lines of the first sensor 2 and the second sensor 3 in the crank shaft 101 pass through the wiring groove 1013 and the outlet hole 1014, the signal lines are connected to the insulating part between the conductive slip rings 11 after passing through the outlet hole 1014. The insulating part can be fixed to the surface of the corresponding main shaft 12 by insulating tape or cable ties.

[0045] In this embodiment, during installation, the conductive slip ring 11 allows the main rotating shaft 12 to pass through. Fasteners are installed in the mounting positioning hole 1101 (which may be a threaded hole) of the conductive slip ring 11, and it is then fixed to the mounting hole 1201 of the main rotating shaft 12. After the mounting positioning hole 1101 and the mounting hole 1201 coincide, they are secured with fasteners. After the main rotating shaft 12 is installed, the conductive slip ring 11... Figure 9 The inner ring of the conductive slip ring 11 is fixed to the main rotating shaft 12. The inner ring of the conductive slip ring 11 can rotate together with the main rotating shaft 12. The outer ring of the conductive slip ring 11 can be completely fixed by the arched mounting opening 1102 and fasteners, and will not rotate with the main rotating shaft 12.

[0046] The signal lines of the first sensor 2 and the second sensor 3 pass through the wiring groove 1013 of the crankshaft 101, and after passing through the wiring groove 1013, they are bent and pass through the outlet hole 1014. The position where the signal lines pass through is as follows: Figures 9 to 10 The signal wire is connected to the wiring position of the inner ring of the conductive slip ring 11 to achieve electrical connection with the inner ring. The signal is transmitted to the inner ring of the conductive slip ring 11 and then transmitted out through the outer ring of the conductive slip ring 11. The outer ring of the conductive slip ring 11 is fixed, while the inner ring rotates together with the main rotating shaft 12, thus avoiding the problem of signal wire tangling when using the upper limb rehabilitation system.

[0047] like Figure 4 and Figure 9 As shown, in some embodiments, the rehabilitation mechanism further includes a motor 10 and a reducer 18. A first bevel gear 16 is mounted on the main shaft 12, and a second bevel gear 17 meshing with the first bevel gear 16 is mounted on the reducer 18 to transmit the driving force of the motor 10 to the main shaft 12. The power output by the motor 10 is first transmitted to the reducer 18. After being reduced in speed by the reducer 18, the power of the motor 10 is transmitted to the main shaft 12 through the meshing of the second bevel gear mounted on the reducer 18 with the first bevel gear 16 on the main shaft 12, thereby driving the main shaft 12 and the connected crank shaft 101 to rotate.

[0048] In some embodiments, the rehabilitation mechanism also includes an angle sensor 14, on which a third bevel gear 19 is mounted. The third bevel gear 19 also meshes with the first bevel gear 16. When the main shaft 12 rotates, it can drive the angle sensor 14 to rotate, thereby using the angle sensor 14 to measure the rotation angle of the main shaft 12.

[0049] In this embodiment, the conductive slip ring 11 can be a multi-channel design, containing multiple mutually insulated conductive paths (channels). The inner ring consists of multiple independent metal rings, each corresponding to one channel, isolated by insulating material; the outer ring is equipped with brushes (conductive contacts) corresponding to the metal rings, also separated by an insulating structure. Each channel independently transmits one signal, avoiding mutual interference.

[0050] The above provides a detailed description of an upper limb rotation rehabilitation mechanism provided by this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the concept of this application and should not be construed as a limitation on the scope of protection of this application.

Claims

1. An anti-entanglement upper limb rotation rehabilitation mechanism, characterized in that, include: A crank shaft (101) is provided, in which a first sensor (2) and a second sensor (3) can be installed, and the crank shaft (101) is provided with a wiring groove (1013) and a wire outlet hole (1014). The main shaft (12) and the crank shaft (101) are located at the end of the main shaft (12) and are detachably mechanically connected to the main shaft (12); The conductive slip ring (11) includes an inner ring and an outer ring that can rotate relative to each other. The inner ring is mechanically detachably connected to the main rotating shaft (12) and can rotate with it, while the outer ring is fixed. The signal lines of the first sensor (2) and the second sensor (3) can be connected to the inner ring of the conductive slip ring (11) through the wiring groove (1013) and the wire outlet hole (1014), and then output through the outer ring of the conductive slip ring (11).

2. The anti-wrap, upper-limb rotation rehabilitation mechanism of claim 1, wherein, The crankshaft (101) includes a first shaft body (1) and a second shaft body (4) connected to each other. The first shaft body (1) is provided with a first slot (1011) and a second slot (1012). The first sensor (2) and the second sensor (3) can be respectively embedded in the first slot (1011) and the second slot (1012).

3. The anti-wrap, upper-limb rotation rehabilitation mechanism of claim 1, wherein, The inner ring of the conductive slip ring (11) is provided with a mounting positioning hole (1101), and the main rotating shaft (12) is provided with a mounting hole (1201) at the corresponding position. The inner ring is fixed to the main rotating shaft (12) by fasteners passing through the mounting positioning hole (1101) and the mounting hole (1201).

4. The entanglement-resistant upper limb rotation rehabilitation mechanism according to claim 1, characterized in that, The rehabilitation mechanism also includes a motor (10) and a reducer (18). A first bevel gear (16) is installed on the main shaft (12), and a second bevel gear (17) that meshes with the first bevel gear (16) is installed on the reducer (18) to transmit the driving force of the motor (10) to the main shaft (12).

5. The entanglement-resistant upper limb rotation rehabilitation mechanism according to claim 4, characterized in that, The rehabilitation mechanism also includes an angle sensor (14), on which a third bevel gear (19) is mounted. The third bevel gear (19) meshes with the first bevel gear (16) to detect the rotation angle of the main shaft (12) through the angle sensor (14).

6. The anti-wrap, upper-limb rotation rehabilitation mechanism of claim 1, wherein, The signal line is connected to the conductive slip ring (11) through the outlet hole (1014). The insulating part between them is fixed to the drive shaft (12) by insulating tape or cable ties.

7. The anti-wrap, upper-limb rotation rehabilitation mechanism of claim 1, wherein, The conductive slip ring (11) is a multi-channel design, and the conductive slip ring (11) contains multiple mutually insulated conductive paths, each of which is isolated by an insulating material.

8. The anti-wrap, upper-limb rotation rehabilitation mechanism of claim 1, wherein, The wiring groove (1013) is a tortuous wiring groove.

9. The entanglement-resistant upper-limb rotation rehabilitation mechanism according to claim 1, characterized in that, The outer ring of the conductive slip ring (11) is also provided with an installation opening (1102), which is an arched opening and is connected to an external fixing structure by fasteners to keep the outer ring stationary.

10. An anti-entanglement upper limb rotation rehabilitation mechanism, characterized in that, include: Two crank shafts (101), each of which can house a first sensor (2) and a second sensor (3), and the crank shafts (101) are provided with a wiring groove (1013) and a wire outlet hole (1014). The main shaft (12) and the two crank shafts (101) are respectively located at the two ends of the main shaft (12) and are detachably mechanically connected to the main shaft (12); Two conductive slip rings (11) are provided corresponding to the two crank shafts (101); Both conductive slip rings (11) include an inner ring and an outer ring that can rotate relative to each other. The inner ring is mechanically detachably connected to the main shaft (12) and can rotate with it, while the outer ring is fixed. The signal lines of the first sensor (2) and the second sensor (3) in the crank shaft (101) can be connected to the inner ring of the corresponding conductive slip ring (11) through the wiring groove (1013) and the wire outlet hole (1014), and then output through the outer ring of the corresponding conductive slip ring (11).

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