An intelligent ring

Abstract

The application relates to the technical field of wearable devices, in particular to a smart ring, which comprises a ring main body, a telescopic circuit board and a sensor assembly, the telescopic circuit board is arranged in the ring main body, the telescopic circuit board comprises a circuit board main body and a telescopic part formed on the circuit board main body, the sensor assembly comprises a first optical assembly and a second optical assembly, the first optical assembly and the second optical assembly are arranged in the ring main body, and the first optical assembly and the second optical assembly are arranged on the circuit board main body in a spaced mode. The telescopic part is arranged, so that the circuit board main body can be telescoped according to different ring main bodies, thereby flexibly adjusting the arc length between the first optical assembly and the second optical assembly; the length of the circuit board main body can be adjusted by the telescopic part for the smart ring with different ring main bodies, different sizes of circuit boards are not needed to be designed, and electronic devices do not need to be rearranged, so that the production cost is effectively reduced, and the consistency of products under different specifications is improved.

Description

Technical Field

[0001] This application relates to the field of wearable device technology, and more particularly to a smart ring. Background Technology

[0002] With the increasing popularity of smart wearable devices, more and more users are wearing smart rings during exercise and sleep. Smart rings often have built-in circuit boards to enable communication between two components. However, due to the different finger sizes of users, smart rings come in different sizes, which necessitates the use of circuit boards of different lengths for different sizes of smart rings.

[0003] For example, smart rings use photoplethysmography (PPG) sensor technology to detect human physiological parameters. When the inner radius of the smart ring decreases, the arc length between the light emitting unit and the light receiving unit shortens, and the corresponding angle also decreases. This means that smart rings with different inner radii require circuit boards of different lengths. Furthermore, different circuit board lengths not only require different sizes but also require different distributions of electronic components, increasing implementation costs and potentially leading to reduced consistency in the final product due to design differences. Utility Model Content

[0004] The present invention introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This part of the present invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0006] In view of the above, an embodiment of this application provides a smart ring, comprising: Ring body; A retractable circuit board is disposed within the ring body. The retractable circuit board includes: a circuit board body and a telescopic portion formed on the circuit board body; the telescopic portion is used to make the length of the circuit board body adjustable. A sensor assembly, comprising: a first optical component and a second optical component, wherein the first optical component and the second optical component are arranged at a distance from each other on the circuit board body.

[0007] In one feasible implementation, the circuit board body includes at least a first connecting segment and a second connecting segment, wherein the first connecting segment is used to mount the first optical component and the second connecting segment is used to mount the second optical component; The telescopic part includes: A ribbon cable, which connects the first connecting segment and the second connecting segment.

[0008] In one feasible implementation, the circuit board body includes a first connecting segment and a second connecting segment, wherein the first connecting segment is used to mount the first optical component and the second connecting segment is used to mount the second optical component; The telescopic part includes: A plurality of conductor segments are arranged and connected in a regular manner, with the first conductor segment connecting to the first connecting segment and the last conductor segment connecting to the second connecting segment.

[0009] In one feasible implementation, the circuit board body includes a first connecting segment and a second connecting segment, and the telescopic portion is disposed between the first connecting segment and the second connecting segment; The retractable circuit board also includes: A limiting structure is provided between the first connecting segment and the second connecting segment to fix the distance between the first connecting segment and the second connecting segment when the length of the circuit board body is shortened.

[0010] In one feasible implementation, the limiting structure includes: A limiting member is connected to the first connecting segment; The cantilever is connected to the second connecting section; An insert is connected to the cantilever and is used to engage with the limiting member to fix the position of the insert.

[0011] In one feasible implementation, the limiting structure includes: A plug-in slot is provided in the first connecting section; A plug arm is connected to the second connecting section. The plug arm is used to plug into and match the plug slot. The plug slot and the plug arm can bend and deform with the circuit board body.

[0012] In one feasible implementation, the telescopic portion is provided in at least two sets, and the at least two sets of the telescopic portion are symmetrically arranged along the length centerline of the circuit board body.

[0013] In one feasible implementation, the retractable circuit board further includes: A battery connection contact point is provided on the circuit board body and located on the side of the circuit board body away from the first optical component and / or the second optical component.

[0014] In one feasible implementation, the retractable circuit board further includes: A deformation section is formed on the circuit board body, and the deformation section is used to make the curvature of the circuit board body adjustable.

[0015] According to a second aspect of this embodiment, a smart ring is provided, wherein the first optical component includes a first PPG sensor, and the second optical component includes a second PPG sensor.

[0016] In one feasible implementation, the first PPG sensor includes a first light emitting unit and a first light receiving unit, and the second PPG sensor includes a second light emitting unit and a second light receiving unit. The first optical receiving unit is signal matched with the first optical emitting unit and the second optical emitting unit to receive the reflected light from the first optical emitting unit to form a first reflected optical path; and / or to receive the transmitted light from the second optical emitting unit to form a first transmitted optical path; The second optical receiving unit is signal matched with the first optical emitting unit and the second optical emitting unit to receive the transmitted light from the first optical emitting unit to form a second transmitted optical path; and / or to receive the reflected light from the second optical emitting unit to form a second reflected optical path.

[0017] In one feasible implementation, it further includes: A light-shielding part, located between the first light emitting unit and the first light receiving unit, is used to block direct light rays between the first light emitting unit and the first light receiving unit; and / or, The light-shielding part is located between the second light emitting unit and the second light receiving unit, and the light-shielding part is used to block the direct light between the second light emitting unit and the second light receiving unit.

[0018] In one feasible implementation, the ring body includes: Inner casing; An outer ring housing is interlocked with an inner ring housing, forming a receiving cavity between them. The sensor assembly and the retractable circuit board are disposed within the receiving cavity. A first light-transmitting window and a second light-transmitting window are both disposed on the inner ring housing. The position of the first light-transmitting window corresponds to the position of the first optical component, and the position of the second light-transmitting window corresponds to the position of the second optical component.

[0019] In one feasible implementation, the ring body is a one-piece molded structure, and the sensor assembly and the retractable circuit board are encapsulated inside the ring body; The ring body also includes a first light-transmitting protrusion and a second light-transmitting protrusion, both of which are integrally formed on the ring body. The position of the first light-transmitting protrusion corresponds to the position of the first optical component, and the position of the second light-transmitting protrusion corresponds to the position of the second optical component.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects: The smart ring provided in this application includes a ring body, a retractable circuit board, and a sensor assembly. The retractable circuit board includes a circuit board body and a telescopic portion formed on the circuit board body. The sensor assembly includes a first optical component and a second optical component. By placing the retractable circuit board inside the ring body, and spaced the first and second optical components on the circuit board body, and providing the telescopic portion on the circuit board body, the length of the circuit board body can be adjusted. This allows the circuit board body to adaptively expand and contract according to changes in the inner radius of the ring body, thereby flexibly adjusting the arc length of the circuit board between the first and second optical components. In this way, for smart rings of different sizes, only the length of the circuit board body needs to be adjusted via the telescopic portion to ensure compatibility between the circuit board body and the ring body. This eliminates the need to design circuit boards of different sizes or rearrange electronic components, effectively reducing design and circuit board material costs, and also improving consistency between different product specifications.

[0021] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic structure of a smart ring according to an embodiment of this application. Figure 1 ; Figure 2 A schematic structure of a smart ring according to an embodiment of this application. Figure 2; Figure 3 A cross-sectional schematic diagram of a smart ring according to an embodiment of this application; Figure 4 A schematic structure of a retractable circuit board for a smart ring according to one embodiment of this application; Figure 5 A schematic diagram of the retractable circuit board of a smart ring according to an embodiment of this application after being shortened. Figure 1 ; Figure 6 A schematic structure of the limiting structure of a smart ring according to an embodiment of this application. Figure 1 ; Figure 7 A schematic structure of the limiting structure of a smart ring according to an embodiment of this application. Figure 2 ; Figure 8 A schematic diagram showing the positions of two sets of telescopic parts in the body of a smart ring according to an embodiment of this application; Figure 9 A schematic diagram showing the positions of two sets of telescopic parts of a smart ring according to an embodiment of this application within the circuit board body; Figure 10 A schematic diagram of the retractable circuit board of a smart ring according to an embodiment of this application after being shortened. Figure 2 ; Figure 11 A schematic structural diagram of two sets of telescopic parts and battery connection contact points of a smart ring according to an embodiment of this application; Figure 12 A schematic structural diagram of the deformable part and battery contact point of a smart ring according to an embodiment of this application; Figure 13 A schematic diagram of the optical path transmission between a first light emitting unit, a first light receiving unit, a second light emitting unit, and a second light receiving unit in a smart ring according to an embodiment of this application; Figure 14 A schematic structural diagram of a first light-transmitting window, a second light-transmitting window, and a light-blocking portion of a smart ring according to an embodiment of this application; Figure 15 A schematic structure of a first light-transmitting protrusion, a second light-transmitting protrusion, and a light-blocking portion of a smart ring according to an embodiment of this application; Figure 16 A schematic structural diagram of the ring body of a smart ring according to an embodiment of this application.

[0023] in, Figures 1 to 16 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100 Ring body, 200 Retractable circuit board, 300 Sensor assembly, 400 Light shield; 110 Inner ring shell, 120 Outer ring shell, 130 First optical area, 131 First light-transmitting window, 132 First light-transmitting protrusion, 140 Second optical area, 141 Second light-transmitting window, 142 Second light-transmitting protrusion; 210 Circuit board body, 211 First connecting section, 212 Second connecting section, 213 Core circuit area, 214 First optical device area, 215 Second optical device area, 220 Telescopic part, 230 Limiting structure, 231 Limiting member, 232 Cantilever, 233 Insert, 234 Insertion slot, 235 Insertion arm, 240 Battery connection contact point, 250 Deformable part; 310 First optical component, 311 First light emitting unit, 312 First light receiving unit, 320 Second optical component, 321 Second light emitting unit, 322 Second light receiving unit. Detailed Implementation

[0024] The following description provides numerous specific details to offer a more thorough understanding of the technical solutions provided by this invention. However, it will be apparent to those skilled in the art that the technical solutions provided by this invention can be implemented without one or more of these details.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0026] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0027] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0028] With the increasing popularity of smart wearable devices, more and more users are wearing them during exercise and sleep. Smart wearable devices use sensor technology to detect physiological parameters, such as resting heart rate, dynamic heart rate, tightness detection, and blood oxygen measurement. Currently, common wearable devices include heart rate chest straps, heart rate armbands, smartwatches, smart bracelets, and smart rings. Because these smart wearable devices are accessories and can detect users' physiological data and collect exercise information during exercise, they are very popular. For some people, wearing heart rate chest straps, armbands, smartwatches, or smart bracelets while sleeping requires developing a habit. Initially, it can be difficult to adapt to the presence or discomfort of these devices, making it difficult to fall asleep and affecting sleep. Unlike heart rate chest straps, armbands, smartwatches, and smart bracelets, smart rings are smaller, lighter, and less noticeable, offering greater comfort and making them more suitable for wearing while sleeping.

[0029] like Figure 1 and Figure 2 A schematic structural diagram of a smart ring is shown. The smart ring can be worn on a user's finger to monitor vital signs through sensors.

[0030] In some smart ring solutions, sensors can include motion sensors and biosensors. Motion sensors may include gyroscopes, accelerometers, magnetometers, etc., used to detect the user's movement information while wearing the smart ring. Biosensors may include photoplethysmography (PPG) sensors, electrocardiogram (ECG) sensors, temperature sensors, etc., used to acquire human biological information, such as heart rate, blood oxygen, blood pressure, and oxygen uptake. Understandably, all of these sensors are mounted on a circuit board.

[0031] Figure 1 A schematic diagram showing the overall structure of the smart ring. Figure 1 .exist Figure 1In the smart ring, the inner radius is R1. In order to enable the PPG sensor to better output and receive light energy, the light emitting unit and the light receiving unit in at least one set of PPG sensors are separated, and the arc between the two is between 90 degrees and 180 degrees. Figure 2 A schematic diagram showing the overall structure of the smart ring. Figure 2 .exist Figure 2 In the design, the inner radius of the smart ring is R2, where R2 < R1. In practical implementation, to accommodate different finger sizes and ensure that the PPG sensors align with the fingertips when worn, the smaller the inner radius of the smart ring, the shorter the arc length between the PPG sensors and the smaller the corresponding angle. Therefore, smart rings with significantly different inner radii (for different ring sizes) require circuit boards of varying lengths.

[0032] Based on this, the smart ring provided in this application improves the structure of the smart ring circuit board, enabling the circuit board to adapt to smart rings of different sizes by adjusting its own length, thereby reducing the implementation cost of the smart ring and improving the consistency of the finished smart ring.

[0033] like Figures 3 to 5 As shown, the smart ring provided in this application embodiment includes a ring body 100, a retractable circuit board 200, and a sensor assembly 300. The retractable circuit board 200 is disposed inside the ring body 100 and includes a circuit board body 210 and a telescopic portion 220 formed on the circuit board body 210. The telescopic portion 220 is used to realize the length of the circuit board body 210 is adjustable. The sensor assembly 300 includes a first optical component 310 and a second optical component 320. The first optical component 310 and the second optical component 320 are arranged at intervals on the circuit board body 210.

[0034] Specifically, Figure 3 The ring body 100 is shown to have a first optical region 130 and a second optical region 140. In actual use, the smart ring can output light energy through the first optical region 130 and the second optical region 140 respectively, and can also receive reflected light and / or transmitted light through the first optical region 130 and the second optical region 140 respectively, for the purpose of detecting the user's physiological parameters.

[0035] For example, Figure 4 A schematic structure of a retractable circuit board 200 for a smart ring according to an embodiment of this application is shown. Figure 4As shown, the circuit board body 210 has a first optical device region 214 and a second optical device region 215. The first optical device region 214 corresponds to the first optical region 130, and the second optical device region 215 corresponds to the second optical region 140. (Combined with...) Figures 2 to 4 The first optical component 310 can be disposed in the first optical device region 214, and the second optical component 320 can be disposed in the second optical device region 215. The circuit board body 210 is also provided with a telescopic portion 220 adjacent to the first optical device region 214 and / or the second optical device region 215.

[0036] It's easy to understand that smart rings can be available in different sizes or band sizes to accommodate users with different finger shapes. Because the inner diameters of smart rings with different sizes or band sizes are different, the circumferences of each smart ring are also different, and the actual distance between the arcs of the first optical region 130 and the second optical region 140 may also differ. Correspondingly, the actual distance between the first optical device region 214 and the second optical device region 215 also differs.

[0037] Based on the above example, in order for the retractable circuit board 200 to adapt to ring sizes or bands of different dimensions, the distance between the first optical device region 214 and the second optical device region 215 can be adjusted via the telescopic part 220 to match the actual distance between the first optical region 130 and the second optical region 140. That is, by lengthening the telescopic part 220, the length of the retractable circuit board 200 can be increased, thereby adapting to smart rings with a larger inner radius; by contracting the telescopic part 220, the length of the retractable circuit board 200 can be shortened, thereby adapting to smart rings with a smaller inner radius.

[0038] Figure 5 This illustration shows the retractable circuit board 200 in the smart ring provided in this embodiment being shortened. Figure 1 As one possible implementation, the telescopic part 220 can be used to set up flexible wiring. When the length of the telescopic circuit board 200 is shortened, the telescopic part 220 and the flexible wiring can be bent or folded into the ring body of the smart ring.

[0039] It is understood that the smart ring provided in this application, by setting a retractable circuit board 200 inside the ring body 100, and spaced the first optical component 310 and the second optical component 320 on the circuit board body 210 of the retractable circuit board 200, and providing a telescopic part 220 on the circuit board body 210, can achieve adjustable length of the circuit board body 210. This allows the circuit board body 210 to adaptively expand and contract according to changes in the inner radius of the ring body 100, thereby flexibly adjusting the arc length of the circuit board between the first optical component 310 and the second optical component 320. In this way, for smart rings of different sizes, only the length of the circuit board body 210 needs to be adjusted through the telescopic part 220 to make the circuit board body 210 and the ring body 100 fit each other. There is no need to design circuit boards of different sizes or rearrange electronic components, effectively reducing design costs and circuit board material costs, and also helping to improve the consistency between different product specifications. This solves the technical problems of poor adaptability, high cost, and low product consistency caused by the fixed length of the circuit board in existing smart rings.

[0040] like Figure 4 As shown, in some possible embodiments provided by this utility model, the circuit board body 210 includes at least a first connecting segment 211 and a second connecting segment 212. The first connecting segment 211 is used to set the first optical component 310, and the second connecting segment 212 is used to set the second optical component 320. The telescopic part 220 includes a ribbon cable, which is connected between the first connecting segment 211 and the second connecting segment 212.

[0041] Combination Figure 3 and Figure 4 Specifically, when the telescopic part 220 includes a bendable ribbon cable, to shorten the telescopic circuit board 200, the ribbon cable can be bent so that the first optical component 310 and the second optical component 320 correspond to the first optical region 130 and the second optical region 140 respectively, thereby adapting to a smart ring with a smaller inner diameter. To lengthen the telescopic circuit board 200, the bent ribbon cable can be straightened so that the first optical component 310 and the second optical component 320 correspond to the first optical region 130 and the second optical region 140 respectively, thereby adapting to a smart ring with a larger inner diameter.

[0042] Correspondingly, the ribbon cable can be made of flexible flat cable (FFC) or flexible printed circuit board (FPC), featuring thinness, softness, and flexibility. Specifically, the ribbon cable can be a flat cable arranged in a wavy, serpentine, or spring-spiral shape, with one end fixedly connected to the first connecting segment 211 by soldering or conductive adhesive, and the other end fixedly connected to the second connecting segment 212. When adapting to a smart ring with a larger inner diameter, the distance between the first connecting segment 211 and the second connecting segment 212 is increased, and the ribbon cable is stretched and straightened, utilizing its own deformation capability to adapt to changes in spacing. When adapting to a smart ring with a smaller inner diameter, the distance between the first connecting segment 211 and the second connecting segment 212 is shortened, and the ribbon cable retracts and refolds. This structure ensures stable transmission of electrical signals during the extension and retraction of the retractable circuit board 200, avoiding the risk of breakage of traditional rigid circuit boards, and also facilitates wiring within the compact space of the ring.

[0043] like Figure 4 As shown, in some possible embodiments provided by this utility model, the circuit board body 210 includes at least a first connecting segment 211 and a second connecting segment 212. The first connecting segment 211 is used to set the first optical component 310, and the second connecting segment 212 is used to set the second optical component 320. Unlike the above embodiments, the telescopic part 220 of this embodiment includes a plurality of conductor segments (not shown in the figure). The plurality of conductor segments are regularly arranged and connected. The conductor segment at the beginning is used to connect the first connecting segment 211, and the conductor segment at the end is used to connect the second connecting segment 212.

[0044] Combination Figure 3 and Figure 4 In this embodiment, when the telescopic part 220 includes several conductor segments, to shorten the telescopic circuit board 200, the conductor segments can be folded together, so that the first optical component 310 and the second optical component 320 correspond to the first optical region 130 and the second optical region 140 of the ring body 100, respectively, thereby adapting to a smart ring with a smaller inner diameter. To lengthen the telescopic circuit board 200, the folded conductor segments can be unfolded, so that the first optical component 310 and the second optical component 320 correspond to the first optical region 130 and the second optical region 140, respectively, thereby adapting to a smart ring with a larger inner diameter.

[0045] For example, the conductor segments can be made of highly elastic conductive alloy materials such as beryllium copper or phosphor bronze, and have a sheet-like structure. Adjacent conductor segments can be connected to each other by riveting or flexible conductive adhesive to form a folded structure similar to an accordion bellows. The flexible conductive adhesive can be a stretchable silver paste product, which has good flexibility and can withstand 5000 bends after curing at 120°C. When adapted to a smart ring with a larger inner diameter, the folded conductor segments are stretched out, and the opened folded layers increase the distance between the first connecting segment 211 and the second connecting segment 212, thereby adjusting the length of the telescopic circuit board 200. When adapted to a smart ring with a smaller inner diameter, the folded conductor segments are folded up, and the folding amount shortens the distance between the first connecting segment 211 and the second connecting segment 212.

[0046] like Figure 4 As shown, in some possible embodiments provided by this utility model, the circuit board body 210 includes at least a first connecting segment 211 and a second connecting segment 212, and a telescopic portion 220 is disposed between the first connecting segment 211 and the second connecting segment 212. Based on the above embodiments, the telescopic circuit board 200 also includes a limiting structure 230, which is disposed between the first connecting segment 211 and the second connecting segment 212. The limiting structure 230 is used to form a tension force between the first connecting segment 211 and the second connecting segment 212 when the telescopic circuit board 200 is shortened, thereby fixing the distance between the first connecting segment 211 and the second connecting segment 212.

[0047] In this embodiment, the limiting structure 230 functions to lock the telescopic part 220 in its adjusted position, fixing the length of the telescopic circuit board 200 and ensuring its fit with the ring body 100, thereby guaranteeing the stability of the sensor assembly 300's position. By setting the limiting structure 230, the telescopic circuit board 200 can be fixed after its length is adjusted, preventing fatigue damage to components caused by frequent creeping of the telescopic circuit board 200. It also ensures the stability of the optical assembly's detection angle, improving detection accuracy.

[0048] like Figure 6 As shown, as one embodiment of the limiting structure 230 in the above embodiments, the limiting structure 230 includes a limiting member 231, a cantilever 232 and an insert 233. The limiting member 231 is connected to the first connecting segment 211, the cantilever 232 is connected to the second connecting segment 212, and the insert 233 is connected to the cantilever 232. The insert 233 is used to engage with the limiting member 231 to fix the position of the insert 233.

[0049] In practical implementation, the limiting member 231 can be a semi-enclosed ring with a U-shaped slot structure, and the insert 233 can be a block-shaped body. The block-shaped body and the strip-shaped body with bends can cooperate to achieve the limiting. The cantilever 232 is an elastic arm with one end connected to the second connecting section 212 and the other end suspended. It can bend and deform with the circuit board body 210 to adapt to the curvature of the ring body 100. When it is necessary to shorten the telescopic part 220, press the cantilever 232. The elastic deformation of the cantilever 232 drives the insert 233 to move closer to the limiting member 231. When the insert 233 moves to the slot entrance position of the limiting member 231, the insert 233 is inserted into the slot under the action of elasticity, thereby locking the first connecting section 211 and the second connecting section 212, keeping the telescopic part 220 in the shortened state. This snap-fit ​​structure is easy to operate, locks firmly, and can effectively prevent the limiting structure 230 from accidentally loosening during the wearing of the smart ring.

[0050] To maintain stability, a set of limiting structures 230 is provided on each side of the telescopic portion 220. Using the limiting structure 230 of this solution, the width of the first connecting segment 211 is smaller than the width of the second connecting segment 212, so that the limiting member 231 can be placed on the side of the first connecting segment 211.

[0051] like Figure 7 As shown, as another embodiment of the limiting structure 230 in the above embodiments, the limiting structure 230 includes a plug groove 234 and a plug arm 235. The plug groove 234 is disposed on the first connecting section 211, and the plug arm 235 is connected to the second connecting section 212. The plug arm 235 is used to plug into and match the plug groove 234. The plug groove 234 and the plug arm 235 can bend and deform with the circuit board body 210 to increase the friction of the plug arm 235 in the plug groove 234 and prevent the plug arm 235 from sliding in the plug groove 234. When the circuit board body 210 is in the unfolded state, the plug arm 235 can slide within the plug slot 234. When the plug arm 235 slides along the length direction of the plug slot 234, it can generate a force that causes the flexible trace area to fold and deform, thereby shortening the length of the telescopic circuit board 200. When the plug slot 234 and the plug arm 235 bend and deform with the circuit board body 210, the deformation force can prevent the plug arm 235 from sliding within the plug slot 234, thereby fixing the distance between the first connecting segment 211 and the second connecting segment 212.

[0052] Understandably, the circuit board body 210 bends and deforms with the ring. The internal stress generated by this bending deformation causes the plug arm 235 to press tightly against the inner wall of the plug hole, using the friction between them to prevent relative sliding. To maintain stability, a set of limiting structures 230 is provided on each side of the telescopic part 220. Using the limiting structure 230 of this solution, the width of the first connecting segment 211 is greater than the width of the second connecting segment 212, so as to leave space in the first connecting segment 211 for setting the plug slot 234.

[0053] Furthermore, the insertion slot 234 can be equipped with sliding damping to provide friction for the insertion arm 235. This allows the insertion arm 235 to maintain the force that causes the flexible wiring area to fold and deform as it slides along the length of the insertion slot 234, thereby shortening the length of the retractable circuit board 200. For example, the insertion arm 235 can be provided with several tiny barbs, and the inner wall of the insertion hole can be roughened to increase the coefficient of friction. This design utilizes the natural bending state of a ring when worn to achieve self-locking, eliminating the need for additional locking parts, simplifying the overall structure, further reducing production costs, and allowing the insertion arm 235 to easily detach from the insertion hole when the retractable circuit board 200 is removed from the ring and unfolded, facilitating adjustment and maintenance.

[0054] like Figures 8 to 11 As shown, in some possible embodiments provided by this utility model, at least two sets of telescopic portions 220 are provided, and at least two sets of telescopic portions 220 are symmetrically arranged along the length centerline of the circuit board body 210. Figure 9 The diagram shows the center line L of the circuit board body 210. Two sets of telescopic portions 220 are provided, one set adjacent to the first optical component area 214 and the other adjacent to the second optical component area 215. A core circuit area 213 is located between the two sets of telescopic portions 220. When the length of the telescopic circuit board 200 needs to be adjusted, both sets of telescopic portions 220 extend synchronously, evenly distributing mechanical stress and preventing excessive force on one side of the telescopic portion 220, which could lead to tearing or breakage. Simultaneously, the symmetrical arrangement helps maintain the balance of the circuit board body 210 during the extension and retraction process, preventing relative twisting or offset of the first optical component 310 and the second optical component 320, ensuring the alignment accuracy of the optical path, and thus improving the quality of signal acquisition.

[0055] Given the limited space inside the ring's internal cavity, this solution employs multiple sets of telescopic sections 220, such as... Figure 10As shown, the excess space occupied by the shortened retractable circuit board 200 can be distributed to multiple positions around the smart ring. Compared with a set of telescopic parts 220, it avoids the excessive accumulation of excess folded material in a certain area, which would form a large protrusion. This effectively reduces the overall thickness and volume of the retractable circuit board 200, allowing it to fit more snugly into the narrow cavity of the ring. This makes full use of the limited circumferential space inside the ring and also makes the force distribution of the retractable circuit board 200 in the cavity more uniform. It avoids local stacking from squeezing other internal components such as batteries or sensors, and improves the compactness of the overall structure and the rationality of the layout.

[0056] and Figure 8 compared to, Figure 15 The inner radius of the smart ring is R4, which is smaller than... Figure 8 The radius R3 of the inner ring of the smart ring. Based on this, the length of the retractable circuit board 200 can be shortened by bending or folding the telescopic part 220.

[0057] like Figure 10 As shown, in one possible implementation, the telescopic part 220 can be used to set flexible wiring, and the width of at least a portion of the accommodating cavity is greater than the thickness of the telescopic circuit board 200 to accommodate the flexible wiring set by the telescopic part 220. When the length of the telescopic circuit board 200 is shortened, the flexible wiring can be bent or folded into the accommodating cavity of the smart ring.

[0058] It should be noted that in all embodiments of this application, since the angle of the arc between the first optical region 130 and the second optical region 140 is determined, different sizes of rings or ring openings only affect the length of the arc between the first optical region 130 and the second optical region 140. Therefore, in actual implementation, it is only necessary to consider the length difference of the retractable circuit board 200 between smart rings of different sizes or ring openings.

[0059] Table 1 shows a ring size chart. In Table 1, "US" refers to the ring size or band size, and "diameter" refers to the inner diameter of the ring. Different diameters correspond to different circumferences.

[0060] In practical implementation, the deformable range of the telescopic part 220 can be configured according to the degree of difference between different ring sizes or ring sizes, that is, the telescopic length range or level of the flexible wiring.

[0061] For example, taking a 160-degree angle between the arcs of the first and second light-transmitting areas, and considering that the diameter of a size 14 ring is 23.1 mm and the diameter of a size 6 ring is 16.5 mm, the circumference of the arc corresponding to 160 degrees is 32 mm for a size 14 ring and 23 mm for a size 6 ring. To allow the retractable circuit board 200 to fit both size 14 and size 6 rings, the retractable range of the circuit board 200 is 10 mm ± 1 mm, meaning the retractable range of the telescopic part 220 is within 10 mm ± 1 mm.

[0062] Table 1 Ring Size Chart

[0063] like Figure 11 and Figure 12 As shown, in some possible embodiments provided by this utility model, the retractable circuit board 200 further includes a battery connection contact 240, which is disposed on the circuit board body 210 and located on the side of the circuit board body 210 away from the first optical component 310 and / or the second optical component 320. The battery connection contact 240 is used to connect a battery.

[0064] In a specific implementation, the battery connection contact 240 is configured on the side opposite to the PPG sensor and is located in the core circuit area 213 of the circuit board body 210. The core circuit area 213 is located in the non-variable area of ​​the retractable circuit board 200 to improve the connection stability between the circuit board body 210 and the battery.

[0065] like Figure 4 and Figure 12 As shown, in some possible embodiments provided by this utility model, in order to improve the reliability and bending ability of the retractable circuit board 200, the retractable circuit board 200 further includes a deformation part 250, which is formed on the circuit board body 210 and is used to realize the curvature of the circuit board body 210 is adjustable.

[0066] It is easy to understand that the circuit board body 210 includes a first connecting segment 211, a second connecting segment 212, and a core circuit area 213. A first optical device area 214 is disposed on the first connecting segment 211, and a second optical device area 215 is disposed on the second connecting segment. The core circuit area 213 can be arranged on a rigid circuit board. Rigid circuit boards are connected to each other, or to the first connecting segment 211 or the second connecting segment 212, through a deformation part 250, so that the entire circuit board body 210 can be bent according to the curvature of the ring. The deformation part 250 can be a flexible circuit board or an elastic connector made of conductive silicone. By utilizing the bendable properties of the flexible circuit board, a smooth transition bend can be formed between adjacent rigid circuit boards. This ensures that the core electronic components are firmly mounted on the rigid circuit board without being affected by stress, and also allows the entire circuit board body 210 to bend and deform with the ring. In addition, the embedded circuits of the flexible circuit board can maintain good electrical connection during bending, effectively avoiding circuit breakage or poor contact caused by repeated bending of the circuit board, thus balancing the structural strength of the smart ring with the comfort of wearing it.

[0067] It should be noted that since the bending capacity of the deformable part 250 is weaker than that of the telescopic part 220, in actual use, the deformable part 250 is only used to bend and change the curvature of the telescopic circuit board 200, and cannot fold or shorten the length of the telescopic circuit board 200.

[0068] In some of the above embodiments, both the first optical component 310 and the second optical component 320 can be photoplethysmography (PPG) sensors, heart rate sensors, or blood oxygen sensors. Preferably, the first optical component 310 includes a first PPG sensor, and the second optical component 320 includes a second PPG sensor.

[0069] Understandably, the two sensors can collect physiological signals from different parts of the finger. For example, the first PPG sensor can be placed on the fingertip side, and the second PPG sensor on the back side of the finger, or both can be arranged at intervals along the circumference of the finger, both acting on the fingertip side. By setting up dual sensors, multi-point data acquisition and cross-validation can be achieved. For example, when one sensor is affected by motion interference, the data from the other sensor can be used for compensation, thereby improving the accuracy and reliability of physiological parameter detection.

[0070] As a possible implementation method, such as Figure 13As shown, the first PPG sensor includes a first light emitting unit 311 and a first light receiving unit 312, and the second PPG sensor includes a second light emitting unit 321 and a second light receiving unit 322. The first light receiving unit 312 is signal-matched with the first light emitting unit 311 and the second light emitting unit 321 to receive the reflected light from the first light emitting unit 311, forming a first reflected light path; and / or to receive the transmitted light from the second light emitting unit 321, forming a first transmitted light path. The second light receiving unit 322 is signal-matched with the first light emitting unit 311 and the second light emitting unit 321 to receive the transmitted light from the first light emitting unit 311, forming a second transmitted light path; and / or to receive the reflected light from the second light emitting unit 321, forming a second reflected light path.

[0071] In this embodiment, two sets of PPG sensors can be set in the smart ring, allowing them to cooperate to form a transmission light path and each to form a reflection light path. When the user wears the ring, if both the first and second PPG sensors are located on the fingertip, the first transmission light path, the first reflection light path, the second transmission light path, and the second reflection light path are all in optimal light signal condition. At this time, the first light receiving unit 312 can receive the first reflected light when the first light emitting unit 311 is working, forming the first reflection light path; and receive the first transmitted light when the second light emitting unit 321 is working, forming the first transmission light path. Similarly, the second light receiving unit 322 can receive the second reflected light when the second light emitting unit 321 is working, forming the second reflection light path; and receive the second transmitted light when the first light emitting unit 311 is working, forming the second transmission light path. This dual-emission, dual-reception multi-optical-path design can utilize the different characteristics of transmitted and reflected light to obtain more complete physiological signal information, improve the signal-to-noise ratio, and is particularly suitable for accurately measuring parameters such as blood oxygen saturation and blood pressure that require deeper penetration.

[0072] like Figure 15 As shown, preferably, the central angle of the arc formed between the first PPG sensor and the second PPG sensor ranges from 120° to 180°. If the user rotates the wearing angle of the smart ring during exercise or sleep, since the first angle α corresponding to the first arc between the first and second PPG sensors satisfies α > 180°, and the second angle β corresponding to the second arc satisfies 120° ≤ β < 180°, at least one set of sensors will be aligned with the fingertip position in any wearing position. In this way, physiological data can be detected using at least one of the first transmitted light path, the first reflected light path, the second transmitted light path, and the second reflected light path. This enables the detection of human physiological data via PPG sensors regardless of the wearing direction or angle when the user wears the smart ring.

[0073] like Figure 14 and Figure 15 As shown, in one feasible embodiment, the smart ring further includes a light-shielding portion 400, located between the first light emitting unit 311 and the first light receiving unit 312, for blocking direct light rays between the first light emitting unit 311 and the first light receiving unit 312; and / or, the light-shielding portion 400 is located between the second light emitting unit 321 and the second light receiving unit 322, for blocking direct light rays between the second light emitting unit 321 and the second light receiving unit 322. In this way, light crosstalk between the light receiving unit and the light emitting unit within the light-transmitting protrusion can be avoided.

[0074] Specifically, the light-shielding part 400 can be disposed at the edge of the light emitting unit, or it can be disposed at the edges of both the light emitting unit and the light receiving unit. The light-shielding part 400 can be a light-shielding ring made of light-shielding foam, light-shielding cotton sheet, or light-shielding silicone.

[0075] In some examples, the light emitting unit and the light receiving unit in the PPG sensor can be the same device or two separate devices. Therefore, when setting the light-shielding part 400, if the light emitting unit and the light receiving unit are the same device, a double-hole light-shielding ring is preferred. The two holes of this ring are used to accommodate the light emitting unit and the light receiving unit respectively, while preventing light leakage. Here, light leakage refers to the situation where, during PPG sensor operation, the light energy output by the light emitting unit directly illuminates the light receiving unit, preventing the light energy received by the light receiving unit from being used to characterize the user's physiological parameters.

[0076] In other examples, when the light emitting unit and the light receiving unit in the PPG sensor are two separate devices, a single-hole light-shielding ring or light-shielding sheet can be preferred.

[0077] like Figure 1 and Figure 2 As shown, in some of the above embodiments, the first optical component 310 includes a transmitter and the second optical component 320 includes a receiver.

[0078] In this embodiment, only one light transmitter and one light receiver are included, arranged spaced apart on the retractable circuit board 200. The transmitter emits light of a specific wavelength into the finger tissue. After scattering and absorption within the tissue, the light signal carrying blood flow information is emitted and received by the receiver. This single-transmitter, single-receiver structure has low cost, small footprint, and simple circuit design, making it suitable for low-cost or space-constrained basic smart rings, and can meet basic heart rate monitoring needs.

[0079] like Figure 16As shown, in some of the embodiments described above, the smart ring includes an annular housing, which can be considered as the outer shell of the smart ring. As one possible implementation, the smart ring may also include an inner ring body that mates with the annular housing to form an accommodating space, or cavity, between them. This accommodating space is used to accommodate functional modules that enable the smart ring's functionality, such as circuit boards, sensors, and batteries.

[0080] In practical implementation, the inner ring body can be a pre-formed shell, such as a pre-formed transparent shell, which is fixed to the annular shell through mortise and tenon joints and / or adhesive bonding. Alternatively, the inner ring body can be cast using a mold. Here, when the inner ring body is cast in one piece, it can also be considered as the ring body 100 of the smart ring. For example, the annular shell and various functional modules of the smart ring are configured in a pre-set casting mold, and the inner ring body is cast by casting a transparent medium such as transparent resin. It is easy to understand that the functional modules of the smart ring can include components such as circuit boards, processors, communication units, memory, sensors, and batteries to realize various functions of the smart ring. When the annular shell and the inner ring body are fitted together, they can form a hole, which serves as a wearing hole for the user's finger to pass through. When the smart ring is worn on the user's finger, the inner ring body will be in complete contact with the finger's skin. Based on this, the biosensor can collect or detect human biological information by contacting the user's skin or by outputting corresponding energy to the user's finger through the inner ring body. For example, static heart rate measurement, dynamic heart rate measurement, heart rate variability detection, or blood oxygen measurement, and then the data of the detected human physiological parameters are sent to the user terminal via near-field communication using a communication unit.

[0081] like Figure 14 As shown, in some of the above embodiments, the ring body 100 includes an inner ring shell 110, an outer ring shell 120, a first light-transmitting window 131, and a second light-transmitting window 141. The outer ring shell 120 and the inner ring shell 110 are fastened together to form a receiving cavity. The sensor assembly 300 and the retractable circuit board 200 are disposed in the receiving cavity. The first light-transmitting window 131 and the second light-transmitting window 141 are both disposed in the inner ring shell 110. The position of the first light-transmitting window 131 corresponds to the position of the first optical component 310, and the position of the second light-transmitting window 141 corresponds to the position of the second optical component 320.

[0082] In practice, the inner ring shell 110 can be a pre-formed shell, such as a pre-formed transparent shell, which is fixed to the outer ring shell 120 by mortise and tenon joints and / or adhesive bonding.

[0083] In a specific implementation, the first light-transmitting window 131 and the second light-transmitting window 141 can be obtained by creating through holes in the metal inner shell. To prevent the PPG sensor from directly contacting the skin or from being easily obscured by contaminants, a light-transmitting layer can be provided in the light-transmitting window. This light-transmitting layer can be a transparent layer extending outward from the inner cavity. This light-transmitting layer can be generated simultaneously with the waterproofing and potting of the inner cavity. Alternatively, it can be a transparent layer pre-embedded in the light-transmitting window of the inner ring.

[0084] like Figure 15 As shown, in some of the above embodiments, the ring body 100 is an integrally formed structure, and the sensor assembly 300 and the retractable circuit board 200 are encapsulated inside the ring body 100. The ring body 100 also includes a first light-transmitting protrusion 132 and a second light-transmitting protrusion 142. The first light-transmitting protrusion 132 and the second light-transmitting protrusion 142 are both integrally disposed on the ring body 100. The position of the first light-transmitting protrusion 132 corresponds to the position of the first optical component 310, and the position of the second light-transmitting protrusion 142 corresponds to the position of the second optical component 320.

[0085] In this embodiment, the ring body 100 can be a one-piece transparent body. Specifically, this can be achieved by casting a transparent medium such as transparent resin to form the ring body 100 in one piece. This gives the smart ring good waterproof performance.

[0086] exist Figure 15 In the inner ring shell 110, a first light-transmitting protrusion 132 and a second light-transmitting protrusion 142 are provided. Here, the first light-transmitting protrusion 132 and the second light-transmitting protrusion 142 can also be formed simultaneously with the casting of the inner ring shell 110. For example, the annular shell and various functional modules of the smart ring are configured in a preset casting mold, and the inner ring shell 110 is cast by casting a transparent medium such as transparent resin, thereby forming the first light-transmitting protrusion 132 and the second light-transmitting protrusion 142.

[0087] Understandably, the light-transmitting protrusions help focus light, allowing it to better enter and exit the fingers. They also slightly lift the area in contact with the skin, reducing gaps and bringing the optical components closer to the skin, thus improving the coupling efficiency of photoelectric signals. Once the angle is set, rotation is minimized, ensuring the optical components are aligned with the fingertip. This one-piece structure offers higher structural strength and consistency, making it suitable for large-scale industrial production.

[0088] In this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0090] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0091] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A smart ring, characterized in that, include: Ring body; A retractable circuit board is disposed within the ring body. The retractable circuit board includes: a circuit board body and a telescopic portion formed on the circuit board body; the telescopic portion is used to make the length of the circuit board body adjustable. A sensor assembly, comprising: a first optical component and a second optical component, wherein the first optical component and the second optical component are arranged at a distance from each other on the circuit board body.

2. The smart ring according to claim 1, characterized in that, The circuit board body includes at least a first connecting segment and a second connecting segment, wherein the first connecting segment is used to set the first optical component and the second connecting segment is used to set the second optical component; The telescopic part includes: A ribbon cable, which connects the first connecting segment and the second connecting segment.

3. The smart ring according to claim 1, characterized in that, The circuit board body includes at least a first connecting segment and a second connecting segment, wherein the first connecting segment is used to set the first optical component and the second connecting segment is used to set the second optical component; The telescopic part includes: A plurality of conductor segments are arranged and connected in a regular manner, with the first conductor segment connecting to the first connecting segment and the last conductor segment connecting to the second connecting segment.

4. The smart ring according to claim 1, characterized in that, The circuit board body includes at least a first connecting segment and a second connecting segment, and the telescopic part is disposed between the first connecting segment and the second connecting segment; The retractable circuit board also includes: A limiting structure is provided between the first connecting segment and the second connecting segment to fix the distance between the first connecting segment and the second connecting segment when the length of the circuit board body is shortened.

5. The smart ring according to claim 4, characterized in that, The limiting structure includes: A limiting member is connected to the first connecting segment; The cantilever is connected to the second connecting section; An insert is connected to the cantilever and is used to engage with the limiting member to fix the position of the insert.

6. The smart ring according to claim 4, characterized in that, The limiting structure includes: A plug-in slot is provided in the first connecting section; A plug arm is connected to the second connecting section. The plug arm is used to plug into and match the plug slot. The plug slot and the plug arm can bend and deform with the circuit board body.

7. The smart ring according to claim 1, characterized in that: The telescopic part is provided in at least two sets, and the at least two sets of the telescopic part are symmetrically arranged along the length center line of the circuit board body.

8. The smart ring according to claim 1, characterized in that, The retractable circuit board also includes: A battery connection contact point is provided on the circuit board body and located on the side of the circuit board body away from the first optical component and / or the second optical component.

9. The smart ring according to claim 1, characterized in that, The retractable circuit board also includes: A deformation section is formed on the circuit board body, and the deformation section is used to make the curvature of the circuit board body adjustable.

10. The smart ring according to any one of claims 1 to 9, characterized in that: The first optical component includes a first PPG sensor, and the second optical component includes a second PPG sensor.

11. The smart ring according to claim 10, characterized in that: The first PPG sensor includes a first light emitting unit and a first light receiving unit, and the second PPG sensor includes a second light emitting unit and a second light receiving unit; The first optical receiving unit is signal matched with the first optical emitting unit and the second optical emitting unit to receive the reflected light from the first optical emitting unit to form a first reflected optical path; and / or to receive the transmitted light from the second optical emitting unit to form a first transmitted optical path; The second optical receiving unit is signal matched with the first optical emitting unit and the second optical emitting unit to receive the transmitted light from the first optical emitting unit to form a second transmitted optical path; and / or to receive the reflected light from the second optical emitting unit to form a second reflected optical path.

12. The smart ring according to claim 11, characterized in that, Also includes: A light-shielding part is located between the first light emitting unit and the first light receiving unit, and the light-shielding part is used to block the direct light between the first light emitting unit and the first light receiving unit; And / or, The light-shielding part is located between the second light emitting unit and the second light receiving unit, and the light-shielding part is used to block the direct light between the second light emitting unit and the second light receiving unit.

13. The smart ring according to any one of claims 1 to 9, characterized in that, The ring body includes: Inner casing; An outer ring housing is interlocked with an inner ring housing, forming a receiving cavity between them. The sensor assembly and the retractable circuit board are disposed within the receiving cavity. A first light-transmitting window and a second light-transmitting window are both disposed on the inner ring housing. The position of the first light-transmitting window corresponds to the position of the first optical component, and the position of the second light-transmitting window corresponds to the position of the second optical component.

14. The smart ring according to any one of claims 1 to 9, characterized in that: The ring body is a one-piece molded structure, and the sensor assembly and the retractable circuit board are encapsulated inside the ring body; The ring body also includes a first light-transmitting protrusion and a second light-transmitting protrusion, both of which are integrally formed on the ring body. The position of the first light-transmitting protrusion corresponds to the position of the first optical component, and the position of the second light-transmitting protrusion corresponds to the position of the second optical component.

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