Smart ring

Abstract

The utility model relates to an intelligent ring, the inner circle of intelligent ring includes the inner plane and the inner arc surface that mutually connect along the circumference, the inside of intelligent ring with the inner plane corresponding part contains electrical element, the inner arc surface is equipped with a plurality of interval arrangement's breathable groove along the circumference, breathable groove penetrates intelligent ring along the axial direction, through the inner plane design under the premise of avoiding the whole thickening of ring, guarantee that electrical element has enough accommodating space, and through setting up breathable groove in the inner arc surface for the ventilation, in addition, the inner plane and the inner arc surface form the combination contact surface, realize pressure dispersion, thereby avoid local compression, promote user wearing experience.

Description

Technical Field

[0001] This utility model relates to the technical field of smart wearable devices, and in particular to a smart ring. Background Technology

[0002] As an emerging smart wearable device, the smart ring combines traditional rings with smart technology, providing users with more functions and convenience.

[0003] Currently, smart ring designs generally suffer from two major comfort defects: First, the contact surface between the ring and the finger is not breathable. Some solutions address this by creating ventilation gaps through discrete protrusions on the inner ring, but these protrusions can compress the fingertip, leading to localized pressure marks with prolonged wear. Second, to accommodate electrical components of a fixed size (such as batteries and sensor modules), the overall ring wall thickness often needs to be increased, resulting in a significantly enhanced foreign body sensation when wearing the ring and affecting the natural bending of the finger. Utility Model Content

[0004] Therefore, it is necessary to address the current problem of poor wearing comfort of smart rings by providing a smart ring that can both ensure space for electrical components, optimize contact pressure distribution, and maintain breathability.

[0005] In this regard, this application provides a smart ring, the inner ring of which includes an inner plane and an inner arc surface that are interconnected in the circumferential direction. The part of the smart ring corresponding to the inner plane contains an electrical component. The inner arc surface has a plurality of ventilation grooves arranged at intervals in the circumferential direction, and the ventilation grooves penetrate the smart ring in the axial direction.

[0006] In one embodiment, the opening width at both ends of the vent groove along the axial direction is smaller than the groove width in the middle portion.

[0007] In one embodiment, each of the ventilation grooves is located on one or both sides of the first plane, and each of the ventilation grooves is arranged symmetrically with the second plane as the center. The first plane is parallel to the inner plane and passes through the center of the smart ring, while the second plane is perpendicular to the first plane and passes through the center of the smart ring.

[0008] In one embodiment, the width of the smart ring along the axial direction is greater than or equal to 10 mm, and each of the ventilation grooves divides the inner arc surface into multiple wearing surfaces along the circumferential direction. Both sides of the inner plane along the circumferential direction are the wearing surfaces.

[0009] In one embodiment, each of the wearing surfaces is inclined outward from the middle portion to both ends in the axial direction to form an arc surface.

[0010] In one embodiment, the inner plane includes a wearing plane and a clearance surface connected to both ends of the wearing plane in an axial direction, the clearance surface being inclined outward from one side close to the wearing plane to the other side to form an arc surface.

[0011] In one embodiment, each of the wearing surfaces has two auxiliary ventilation grooves spaced apart along the axial direction to form a wearing arc surface between the two auxiliary ventilation grooves, and each of the auxiliary ventilation grooves is open along the axial direction.

[0012] In one embodiment, the auxiliary ventilation groove is connected to the adjacent ventilation groove in the circumferential direction.

[0013] In one embodiment, the inner plane has two ventilation slots spaced apart along the axial direction to form a wearing plane between the two ventilation slots, and both ventilation slots are open along the axial direction; the wearing plane is connected to the wearing arc surfaces on both sides, and each ventilation slot is connected to two auxiliary ventilation slots that are adjacent on the same side along the axial direction.

[0014] In one embodiment, the inner ring of the smart ring has annular chamfers with a radius of 1 mm or greater on both sides of its axial direction.

[0015] The aforementioned smart ring, through its inner plane design, ensures sufficient space for electrical components without increasing the overall thickness of the ring. It also features ventilation grooves on the inner arc surface for breathability. Furthermore, the inner plane and the inner arc surface form a combined contact surface to distribute pressure, thereby avoiding localized pressure and improving the user's wearing experience. Attached Figure Description

[0016] Figure 1 This is a perspective view of the first embodiment of the smart ring of this application; Figure 2 for Figure 1 The front view; Figure 3 This is a front view of a second embodiment of the smart ring of this application; Figure 4 This is a front view of the third embodiment of the smart ring of this application; Figure 5 for Figure 2 A cross-sectional view along the AA direction; Figure 6 This is a perspective view of the fourth embodiment of the smart ring of this application; Figure 7 for Figure 6 A stereoscopic image viewed from below; Figure 8 A perspective view of the fifth embodiment of the smart ring of this application from a low angle; Figure 9 for Figure 8 A stereoscopic view from another angle.

[0017] Reference numerals: 10, inner plane; 11, wearing plane; 12, avoidance surface; 13, ventilation groove; 20, inner arc surface; 21, ventilation groove; 22, wearing surface; 221, wearing arc surface; 222, auxiliary ventilation groove; C1, first plane; C2, second plane. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] For ease of description, in this application, the direction of the central axis of the smart ring is defined as the axial direction, the direction along the circle surrounding the central axis of the smart ring is defined as the circumferential direction, and the direction perpendicular to the circumferential direction and passing through the central axis of the smart ring is defined as the radial direction.

[0025] Please combine Figure 1 as well as Figure 2 As shown, this application provides a smart ring. The inner ring of the smart ring includes an inner plane 10 and an inner arc surface 20 that are interconnected in the circumferential direction. The part of the smart ring corresponding to the inner plane 10 contains electrical components. The inner arc surface 20 has a plurality of ventilation grooves 21 arranged at intervals in the circumferential direction. The ventilation grooves 21 penetrate the smart ring in the axial direction.

[0026] In this application, the inner plane 10 design ensures sufficient space for electrical components without increasing the overall thickness of the ring. The inner arc surface 20 has ventilation grooves 21 for ventilation. In addition, the inner plane 10 and the inner arc surface 20 form a combined contact surface to achieve pressure distribution, thereby avoiding local pressure and improving the user's wearing experience.

[0027] Since the thickness of the ring at the location of the inner plane 10 (the distance between the inner and outer rings) is greater than the thickness of the ring at the location of the inner arc surface 20, the space inside the location of the inner plane 10 can be used to accommodate electrical components (batteries, sensors, etc.), thus maximizing the space for electrical components within a limited volume. Furthermore, since there is no need to thicken the smart ring as a whole, it can significantly reduce the feeling of foreign objects when wearing it and the interference with finger bending. On the other hand, the inner plane 10 can also provide a rigid and flat load-bearing structure for the electrical components to ensure stable installation of the electrical components and signal accuracy.

[0028] Secondly, the ventilation groove 21 on the inner arc surface 20 runs through the smart ring along the axial direction, thereby forming an air circulation channel and creating an air convection environment between the finger and the ring, avoiding sweat accumulation and improving long-term wearing comfort; in addition, the ventilation groove 21 is formed by slotting on the inner arc surface 20, which can avoid local pressure points and will not squeeze the user's finger when wearing the ring, thereby achieving pressure-free breathability.

[0029] Furthermore, in this application, the combined contact surface formed by the inner plane 10 and the inner arc surface 20 contacts the user's finger. The inner plane 10 provides a continuous, flat, large contact surface to support the main force-bearing areas such as the fingertip or the back of the finger, while the inner arc surface 20 is used to conform to the curved surface of the finger. This combined contact surface can ensure sufficient contact area through the inner plane 10, avoiding the problem of pressure concentration caused by an insufficient contact surface, and improving the user's wearing experience.

[0030] Specifically, in some embodiments, the depth of the ventilation groove 21 is in the range of 0.4mm to 1.6mm. If the ventilation groove 21 is too deep, it will affect the space for other components inside the smart ring, while if it is too shallow, it may affect the ventilation effect. In this application, by controlling the depth of the ventilation groove 21 to 0.4mm to 1.6mm, the ventilation effect can be guaranteed while minimizing the space occupied inside the smart ring.

[0031] Please refer to Figure 1 As shown, in some embodiments, the opening width at both ends of the vent groove 21 along the axial direction is smaller than the groove width in the middle portion.

[0032] The ventilation groove 21 has a narrow-wide-narrow groove structure along the axial direction, which can enhance the breathability by utilizing the Venturi effect. That is, the narrow openings at both ends can guide the air to flow more smoothly to the middle wide part, forming a local low-pressure area and enhancing the efficiency of air intake and exhaust. At the same time, the wider groove section in the middle provides more space for airflow, ensuring that more air can come into contact with the skin of the fingers in the ventilation groove 21, thereby enhancing the breathability and preventing sweat accumulation.

[0033] In addition, the narrow opening of the ventilation groove 21 can reduce the direct entry of external dust or foreign objects into the groove, keep the groove clean, and reduce the risk of skin irritation. On the other hand, it can also increase the strength of the groove edge and reduce the stress concentration of the material caused by the groove opening being too wide, thereby preventing the ring from deforming or breaking under the bending of the finger or external impact.

[0034] Specifically, the wall of the ventilation groove 21 along the circumferential direction is an arc shape with the middle part bulging outward. Of course, in some other embodiments, the ventilation groove 21 may also be wavy or other shapes, as long as it can form a narrow-wide-narrow groove structure. This application will not give examples of each one here.

[0035] More specifically, the ratio between the circumferential convex height and the axial width of the arc-shaped sidewall of the ventilation groove 21 is between 0.03 and 0.12. If the ratio is too small, it means that the convex dimension of the arc-shaped sidewall of the ventilation groove 21 is small, and its efficiency in enhancing air intake and exhaust is relatively low. Conversely, if the ratio is too large, it means that the convex dimension of the arc-shaped sidewall of the ventilation groove 21 is large, which occupies a large amount of space inside the ring. Through simulation testing and experimental verification, when the ratio is controlled within the range of 0.03 to 0.12, a relatively good exhaust effect can be guaranteed, while the space occupied inside the ring is relatively small.

[0036] Furthermore, in some embodiments, the projection of the vent groove 21 along the axial direction is an inverted trapezoid, wherein the inner side is the longer side and the outer side is the shorter side.

[0037] Please combine Figure 2 , Figure 3 as well as Figure 4 As shown, in some embodiments, each ventilation groove 21 is located on one or both sides of the first plane C1, and each ventilation groove 21 is arranged symmetrically with the second plane C2 as the center; wherein, the first plane C1 is parallel to the inner plane 10 and passes through the center of the smart ring, and the second plane C2 is perpendicular to the first plane C1 and passes through the center of the smart ring.

[0038] Specifically, when the smart ring is worn and the inner plane 10 is in contact with the fingertip, the ventilation groove 21 is opened on the same side of the inner plane 10 relative to the first plane C1, which allows air circulation to be mainly concentrated in the side area of ​​the fingertip (the fingertip has a high density of sweat glands and is prone to sweating), thereby alleviating the accumulation of sweat on the fingertip; conversely, when the smart ring is worn and the inner plane 10 is in contact with the back of the finger, the ventilation groove 21 is opened on the opposite side of the inner plane 10 relative to the first plane C1, which can alleviate the accumulation of sweat on the fingertip; and provided that the internal space of the smart ring can meet the needs of component accommodation, by opening ventilation grooves 21 on both sides of the first plane C1, the ventilation needs under different wearing scenarios can be met.

[0039] Preferably, each ventilation groove 21 is located on both sides of the first plane C1, wherein the central angle corresponding to the inner plane 10 in the circumferential direction ranges from 50° to 55°, and the central angle corresponding to each ventilation groove 21 in the circumferential direction ranges from 30° to 35°. Further, the wearing surface 22 on the opposite side of the inner plane 10 has a central angle corresponding to the circumferential direction ranging from 65° to 70°, and the central angle corresponding to the remaining wearing surfaces 22 in the circumferential direction ranges from 25° to 35°.

[0040] Of course, in some other embodiments, the ventilation slots 21 can also be arranged asymmetrically according to actual needs (such as the arrangement of internal components of the smart ring, etc.), which will not be listed here.

[0041] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, the width of the smart ring along the axial direction is greater than or equal to 10 mm, and each ventilation groove 21 divides the inner arc surface 20 into multiple wearing surfaces 22 along the circumferential direction. Both sides of the inner plane 10 along the circumferential direction are wearing surfaces 22.

[0042] The inner arc surface 20 is divided into multiple wearing surfaces 22 by the circumferentially spaced ventilation grooves 21. On the one hand, this ensures breathability and avoids the overall strength of the ring from decreasing due to excessively wide ventilation grooves 21. On the other hand, each wearing surface 22 and the inner plane 10 work together to make even contact with the user's finger along the circumference, which can avoid excessive local pressure.

[0043] Of course, in some other embodiments, the two sides of the inner plane 10 along the circumferential direction may be the wearing surface 22 and the ventilation groove 21, or both may be ventilation grooves 21.

[0044] Furthermore, please combine Figure 1 , Figure 2 as well as Figure 5 As shown, in some embodiments, each wearing surface 22 is inclined outward from the middle portion to both ends in the axial direction to form an arc surface.

[0045] It's easy to understand that for smart rings, i.e., thumb rings, with a width of 10mm or more along the axial direction, the larger width of the ring compared to regular rings can cause discomfort such as stuffiness and inability to bend the finger flexibly due to the large area covered by the ring.

[0046] In response, this application reduces the actual contact area between the wearing surface 22 and the finger skin by using an arc-shaped design that is thicker in the middle and thinner at both ends, thereby improving the flexibility and comfort after wearing. The arc-shaped inclined structure at both ends of the wearing surface 22 can also provide greater bending space when the finger is bent, and can also conform to the curve when the finger is bent, which is ergonomic and further improves the flexibility and comfort after wearing.

[0047] Specifically, the ratio between the radial height and axial width of the arc surface formed by the wearing surface 22 is between 0.03 and 0.12. The larger this ratio, the greater the convexity of the arc surface, the smaller the contact area between the wearing surface 22 and the finger when wearing, resulting in higher comfort. However, the wearing surface 22 also occupies more of the internal space of the smart ring.

[0048] In some other embodiments, the wearing surface 22 may also be wavy or other shapes along the axial direction; in addition, the two ends of the wearing surface 22 along the circumferential direction may also be inclined outward to form an arc surface.

[0049] Please combine Figure 1 as well as Figure 5 As shown, in some embodiments, the inner plane 10 includes a wearing plane 11 and a clearance surface 12 connected to both ends of the wearing plane 11 in an axial direction. The clearance surface 12 is inclined outward from the side closest to the wearing plane 11 to the other side to form an arc surface.

[0050] Because the width of the smart ring in this embodiment is greater than or equal to 10mm along the axial direction, the width of the smart ring in this embodiment is greater than the width required to accommodate the internal electrical components (sensors, batteries, charging bases, etc.). Therefore, in this embodiment, the inner plane 10 only needs to use the middle wearing plane 11 as a rigid plane to support the electrical components to ensure stable installation of the electrical components and signal accuracy. The avoidance surfaces 12 on both sides have no component accommodation requirements and can be designed as slanted arc surfaces to serve ergonomics (matching the bending movements of finger joints), thereby reducing the contact area between the fingers and the inner plane 10 and improving wearing flexibility and comfort.

[0051] Please combine Figure 6 as well as Figure 7 As shown, in some embodiments, each wearing surface 22 has two auxiliary ventilation grooves 222 spaced apart along the axial direction to form a wearing arc surface 221 between the two auxiliary ventilation grooves 222, and each auxiliary ventilation groove 222 is open along the axial direction.

[0052] The auxiliary ventilation groove 222 opens along the axial direction to form a direct passage, which can more effectively promote air circulation and moisture removal, reduce the stuffiness between the skin and the ring, especially in high-activity or high-temperature environments, help prevent sweat accumulation and reduce the risk of skin discomfort or allergies; on the other hand, the auxiliary ventilation groove 222 provides additional deformation space for finger bending. When the finger bends, the auxiliary ventilation groove 222 can allow part of the finger to be squeezed and embedded in the groove, so as to reduce the restriction on the movement of the finger joint, thereby enhancing the flexibility and natural bending experience after wearing.

[0053] In addition, each wearing surface 22 is divided by two auxiliary ventilation slots 222, and the originally continuous curved surface is divided into an H shape, which reduces the actual contact area between the wearing surface 22 and the finger skin, avoids the pressure caused by large-area wrapping, and improves the overall comfort.

[0054] It is worth mentioning that the auxiliary ventilation groove 222 and the circumferentially spaced ventilation groove 21 can work together to form a grid-like ventilation structure to provide better ventilation.

[0055] Specifically, the ratio of the width of the auxiliary ventilation groove 222 in the circumferential direction to the width of the wearing arc surface 221 in the circumferential direction is in the range of 0.3 to 0.8; the ratio of the dimension of the auxiliary ventilation groove 222 in the axial direction to the dimension of the wearing arc surface 221 in the axial direction is in the range of 0.3 to 2.7.

[0056] Please refer to Figure 8 As shown, in some embodiments, the auxiliary ventilation groove 222 is connected to the adjacent ventilation groove 21 in the circumferential direction. That is, an independent wearing arc surface 221 is formed between the two auxiliary ventilation grooves 222 and the two adjacent ventilation grooves 21.

[0057] It can be understood that the auxiliary ventilation groove 222 is connected to the ventilation grooves 21 on both sides, forming a square-shaped ventilation network inside the inner arc surface 20. This allows the air in the ventilation groove 21 to not only flow longitudinally (axially) and out of its own opening, but also to flow laterally (circumferentially) inside the wearing surface 22 through the auxiliary ventilation groove 222. This greatly promotes multi-dimensional convection ventilation between the inner cavity of the ring and the external environment, thereby reducing the accumulation of moisture and heat between the skin in the wearing area and the inner arc surface 20 of the ring.

[0058] Specifically, in some embodiments, the depth of the auxiliary ventilation groove 222 is less than the depth of the ventilation groove 21, and the connection between the two is smoothly transitioned.

[0059] Please refer to Figure 9 As shown, in some embodiments, the inner plane 10 has two wearing surfaces 22 on both sides along the circumferential direction; the inner plane 10 has two ventilation grooves 13 spaced apart along the axial direction to form a wearing plane 11 between the two ventilation grooves 13, and both ventilation grooves 13 are open along the axial direction; the wearing plane 11 is connected to the wearing arc surfaces 221 on both sides, and each ventilation groove 13 is connected to two auxiliary ventilation grooves 222 that are adjacent on the same side along the axial direction.

[0060] Because the width of the smart ring in this embodiment is greater than or equal to 10mm along the axial direction, the width of the smart ring in this embodiment is greater than the width required to accommodate the internal electrical components (sensors, batteries, charging bases, etc.). Therefore, in this embodiment, the inner plane 10 only needs to use the middle wearing plane 11 as a rigid plane to support the electrical components, so as to ensure the stable installation of the electrical components and the signal accuracy. Ventilation grooves 13 connected to the auxiliary ventilation grooves 222 can be opened on both sides along the axial direction. On the one hand, it provides an additional airflow channel in the area of ​​the inner plane 10, reducing sweat accumulation and local heat, thereby solving the problem of stuffiness caused by large-area contact. On the other hand, it can also reduce the contact area between the inner plane 10 and the skin of the fingers, thereby improving the flexibility and comfort of wearing.

[0061] It is worth mentioning that, since the wearing surface 11 is the area where electrical components are housed, the addition of the ventilation slot 13 also helps to dissipate the heat generated by the components, preventing performance and wearing comfort from being affected by overheating of the components.

[0062] Specifically, the wearing surface 11 is smoothly connected to the wearing arc surfaces 221 on both sides to reduce edge friction, avoid skin pressure, and improve the overall fit.

[0063] In some embodiments, the inner ring of the smart ring has an annular chamfer with a radius of 1 mm or greater on both sides of its axial direction.

[0064] Because the width of the smart ring in this embodiment is greater than or equal to 10mm along the axial direction, the width of the smart ring in this embodiment is greater than the width required to accommodate the internal electrical components (sensors, batteries, charging bases, etc.), that is, the space along the width is more abundant. Therefore, in this application, a large chamfer with a radius greater than or equal to 1mm can be opened on the inner edge to reduce the possibility of interference between the finger joint and the inner edge when bending, which may cause discomfort to the hand, and further improve the wearing flexibility and comfort of the smart ring in this application.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A smart ring, characterized in that, The inner ring of the smart ring includes an inner plane (10) and an inner arc surface (20) that are connected to each other in the circumferential direction. The part of the smart ring corresponding to the inner plane (10) contains electrical components. The inner arc surface (20) has a plurality of ventilation grooves (21) arranged at intervals in the circumferential direction. The ventilation grooves (21) penetrate the smart ring in the axial direction.

2. The smart ring according to claim 1, characterized in that, The opening width at both ends of the vent groove (21) along the axial direction is smaller than the groove width in the middle part.

3. The smart ring according to claim 1, characterized in that, Each of the ventilation grooves (21) is located on one or both sides of the first plane, and each of the ventilation grooves (21) is arranged symmetrically with the second plane as the center; The first plane is parallel to the inner plane (10) and passes through the center of the smart ring, while the second plane is perpendicular to the first plane and passes through the center of the smart ring.

4. The smart ring according to any one of claims 1 to 3, characterized in that, The width of the smart ring along the axial direction is greater than or equal to 10mm, and each of the ventilation grooves (21) divides the inner arc surface (20) into multiple wearing surfaces (22) along the circumferential direction. Both sides of the inner plane (10) along the circumferential direction are the wearing surfaces (22).

5. The smart ring according to claim 4, characterized in that, Each of the wearing surfaces (22) is inclined outward from the middle portion to both ends in the axial direction to form an arc surface.

6. The smart ring according to claim 4, characterized in that, The inner plane (10) includes a wearing plane (11) and a clearance surface (12) connected to both ends of the wearing plane (11) in an axial direction. The clearance surface (12) is inclined outward from the side closest to the wearing plane (11) to the other side to form an arc surface.

7. The smart ring according to claim 4, characterized in that, Each of the wearing surfaces (22) has two auxiliary ventilation grooves (222) spaced apart along the axial direction to form a wearing arc surface (221) between the two auxiliary ventilation grooves (222), and each of the auxiliary ventilation grooves (222) is open along the axial direction.

8. The smart ring according to claim 7, characterized in that, The auxiliary ventilation groove (222) is connected to the adjacent ventilation groove (21) in the circumferential direction.

9. The smart ring according to claim 7, characterized in that, The inner plane (10) has two ventilation slots (13) spaced apart along the axial direction to form a wearing plane (11) between the two ventilation slots (13). Both ventilation slots (13) are open along the axial direction. The wearing plane (11) is connected to the wearing arc surface (221) on both sides. Each ventilation slot (13) is connected to two auxiliary ventilation slots (222) that are on the same side and adjacent along the axial direction.

10. The smart ring according to claim 4, characterized in that, The inner ring of the smart ring has annular chamfers with a radius of 1 mm or greater on both sides of its axial direction.

Images