Production process of annular wearable device, and smart ring

Abstract

Disclosed in the present invention are a production process of an annular wearable device, and a smart ring. The production process comprises: providing a basic element; pre-treating the inner surface of a mounting cavity; controlling the temperature of an outer annular housing at a first preset temperature, and controlling the temperature of an inner annular housing at a second preset temperature, wherein the first preset temperature is higher than the second preset temperature; injecting a pre-blended thermosetting plastic material into the mounting cavity at a predetermined rate, and after the injection of the thermosetting plastic material is completed, under the conditions of maintaining the temperature of the outer annular housing at the first preset temperature and maintaining the temperature of the inner annular housing at the second preset temperature, applying a micro-vibration, which has an amplitude of no more than 0.5 mm, to the basic element, and sustaining the micro-vibration for a preset duration; raising the temperature of the basic element to a third preset temperature, so as to cure the thermosetting plastic material into shape; and cooling the basic element to room temperature, and encapsulating the basic element. By means of the technical solution of the present invention, the thermosetting plastic material, from which bubbles are eliminated, can uniformly fill the space between an optical sensor and a light-transmitting window.

Description

Production process of ring-shaped wearable and smart ring TECHNICAL FIELD

[0001] The present application relates to the technical field of smart rings, and particularly relates to a production process of a ring-shaped wearable and a smart ring. BACKGROUND

[0002] With the rapid development of wearable technology, smart devices are gradually evolving towards miniaturization, portability and multifunctionality. Under this trend, ring-shaped wearable products such as smart rings, earrings and bracelets have emerged, which combine the beauty of traditional accessories with advanced electronic technology to provide users with health monitoring, identity verification and other functions. To achieve these functions, various electronic components such as optical sensors, processors and batteries need to be integrated in the inner cavity of the wearable product.

[0003] In order to protect these delicate electronic components and ensure the normal operation of the wearable product, a material in a plastic state needs to be filled in the inner cavity of the product. After the material in a plastic state is solidified and formed, it can effectively connect the outer shell of the product and the electronic components together to achieve the protection functions of fixing electronic components, waterproofing, dustproofing and shockproofing. However, during the forming process of the material in a plastic state, air bubbles often appear inside. These air bubbles may be located between the optical sensor and the light-transmitting window, which can cause light scattering or reflection, thereby affecting the accuracy and sensitivity of the optical sensor. SUMMARY

[0004] The main purpose of the present application is to solve the technical problem that the air bubbles in the thermosetting plastic material between the optical sensor and the light-transmitting window of the existing smart ring reduce the accuracy and sensitivity of the optical sensor.

[0005] The present application provides a production process of a ring-shaped wearable in the first aspect, which comprises:

[0006] S1, providing a basic element, the basic element comprising an outer ring-shaped shell and an inner ring-shaped shell, an installation cavity being formed between the outer ring-shaped shell and the inner ring-shaped shell, an electronic component being arranged in the installation cavity, and a light-transmitting window being arranged on the inner ring-shaped shell at a position corresponding to an optical sensor of the electronic component;

[0007] S2, pretreating the inner surface of the installation cavity to enhance the adhesion of the thermosetting plastic material;

[0008] S3, controlling the temperature of the outer ring-shaped shell at a first preset temperature and controlling the temperature of the inner ring-shaped shell at a second preset temperature, the first preset temperature being higher than the second preset temperature, and the first preset temperature being lower than the solidification starting temperature of the thermosetting plastic material;

[0009] S4, injecting the pre-prepared thermosetting plastic material into the installation cavity at a predetermined rate, after the thermosetting plastic material is injected, under the condition that the temperature of the outer annular shell is maintained at the first preset temperature and the temperature of the inner annular shell is maintained at the second preset temperature, a micro-vibration with an amplitude of not more than 0.5 mm is applied to the base element for a preset micro-vibration duration;

[0010] S5, the temperature of the whole base element is raised to a third preset temperature to make the thermosetting plastic material solidified and formed;

[0011] S6, cooling the base element to room temperature and packaging the base element.

[0012] Optionally, before injecting the pre-prepared thermosetting plastic material into the installation cavity, the temperature of the pre-prepared thermosetting plastic material is controlled at a fourth preset temperature, and the value of the fourth preset temperature is the average of the first preset temperature and the second preset temperature.

[0013] Optionally, an installation gap is formed between the sensor of the electronic element and the light-transmitting window.

[0014] The S4 comprises:

[0015] S4.1, injecting the thermosetting plastic material with a temperature of the fourth preset temperature from the installation gap at an injection rate of 0.01-0.1 ml / s, and applying ultrasonic waves to the thermosetting plastic material in the installation cavity using an ultrasonic probe during the injection process, the duration of the ultrasonic waves being the same as the injection time of the thermosetting plastic material.

[0016] S4.2, after the thermosetting plastic material is injected, under the condition that the temperature of the outer annular shell is maintained at the first preset temperature and the temperature of the inner annular shell is maintained at the second preset temperature, a vibration with an amplitude of 0.05-0.2 mm and a frequency of 30-50 Hz is applied to the base element for 30-90 seconds.

[0017] Optionally, the process of using the ultrasonic probe in S4.1 comprises:

[0018] Selecting an ultrasonic probe with a frequency of 15-25 kHz and a power of 10-30 W;

[0019] Placing the ultrasonic probe outside the light-transmitting window, and maintaining a distance between the acting end of the ultrasonic probe and the outer surface of the light-transmitting window;

[0020] Controlling the ultrasonic probe to make circumferential motion along the outer edge of the light-transmitting window.

[0021] Optionally, the S5 comprises:

[0022] uniformly raising the base element to 60-80℃ at a rate of 1-2℃ / min and keeping for 60-90 minutes to make the thermosetting plastic material solidify and form, during which a slight vibration with an amplitude of 0.05-0.1mm for 3-5 seconds is applied to the base element every 15-20 minutes.

[0023] Optionally, the cooling of the base element to room temperature comprises:

[0024] slowly reducing the temperature of the base element at a rate of 0.5-1℃ / min; when the temperature is reduced to 15-20℃ lower than the third preset temperature, keeping the temperature for 30-45 minutes to complete the post-curing process of the thermosetting plastic material, and then continuing to reduce the temperature to room temperature at the same rate.

[0025] The second aspect of the present application provides a smart ring, comprising:

[0026] a base element, the base element comprising an outer ring-shaped shell, an inner ring-shaped shell, a bottom ring, a face ring and a face cover, the outer ring-shaped shell and the inner ring-shaped shell are oppositely arranged, the bottom periphery of the outer ring-shaped shell is connected with the bottom periphery of the inner ring-shaped shell through the bottom ring, the top periphery of the outer ring-shaped shell is connected with the face ring, the outer ring-shaped shell, the inner ring-shaped shell, the bottom ring and the face ring jointly define a mounting cavity, an opening communicating with the mounting cavity is formed between the top periphery of the face ring and the inner ring-shaped shell, the face cover is arranged on the opening, and a light-transmitting window is arranged on the inner ring-shaped shell;

[0027] an electronic element arranged in the mounting cavity, the electronic element comprising an optical sensor, and the optical sensor is oppositely arranged with the light-transmitting window;

[0028] a filler formed by solidification of a thermosetting plastic material, and the filler fills the mounting cavity.

[0029] Optionally, the material of the inner ring-shaped shell is plastic or titanium; and / or,

[0030] the material of the outer ring-shaped shell is at least one of titanium, gold, K gold, silver and jade; and / or,

[0031] the material of the bottom ring is at least one of titanium, gold, K gold, silver and jade; and / or,

[0032] the material of the face ring is at least one of titanium, gold, K gold, silver and jade; and / or,

[0033] the material of the face cover is at least one of titanium, gold, K gold, silver and jade.

[0034] Optionally, the electronic components include a circuit board and a battery.

[0035] The optical sensor is disposed on the circuit board.

[0036] The circuit board is electrically connected with the battery.

[0037] The circuit board and the battery are respectively disposed in two positions spaced 180 degrees along the circumference in the mounting cavity, so as to balance the weight distribution of the smart ring.

[0038] Optionally, the inner annular shell is provided with a charging interface, and the electronic components include a charging component disposed in the mounting cavity and electrically connected with the battery and the circuit board respectively, the charging component being exposed through the charging interface.

[0039] The production process of the annular wearable device effectively solves the core problems of uneven filling of thermosetting plastic material between the optical sensor and the light-transmitting window and the difficulty of removing bubbles through the ingenious design of temperature gradient. The key of the process is to create a temperature gradient where the temperature of the outer annular shell is higher than that of the inner annular shell. This design plays an important role in solving the problem: first, the temperature gradient promotes the directional flow of thermosetting plastic material from the high-temperature area (outer annular shell) to the low-temperature area (inner annular shell, including the area between the optical sensor and the light-transmitting window). This flow ensures uniform filling of thermosetting plastic material in the area between the optical sensor and the light-transmitting window, and more importantly, during this flow process, most of the bubbles will be pushed to the high-temperature area or the surface of the thermosetting plastic material. This is because in the high-temperature area, the thermosetting plastic material has low viscosity, and bubbles are more easily moved and escaped.

[0040] Secondly, when the thermosetting plastic material reaches the low-temperature area between the optical sensor and the light-transmitting window, its viscosity increases significantly. This high viscosity state plays a key protective role: on the one hand, it prevents new bubbles from forming or entering this area; on the other hand, it maintains the uniform distribution state that has been achieved, preventing the thermosetting plastic material from flowing again. In fact, this high viscosity state "locks" a state of almost bubble-free thermosetting plastic material in the area between the optical sensor and the light-transmitting window.

[0041] On the basis of temperature gradient control, the application also introduces micro-vibration technology, further enhancing the effect of bubble removal. The application of micro-vibration mainly solves two problems: one is to help break and eliminate residual micro-bubbles, and the other is to promote the further uniform distribution of thermosetting plastic material on a micro scale. Specifically, the mechanical energy generated by micro-vibration can effectively break the micro-bubbles that may be left between the optical sensor and the light-transmitting window without causing large-scale flow of the thermosetting plastic material. This is particularly important because in this critical area, due to the high viscosity of the thermosetting plastic material (affected by the temperature gradient), the effect of conventional bubble removal methods is limited. The additional energy provided by micro-vibration can overcome the resistance of high-viscosity thermosetting plastic material, prompting micro-bubbles to merge or move to the surface of the thermosetting plastic material, thereby being effectively removed. At the same time, micro-vibration can also promote the redistribution of thermosetting plastic material on a micro scale, filling possible micro-gaps and further improving the uniformity of filling. This combination of temperature gradient and micro-vibration is suitable for precisely controlling the distribution of thermosetting plastic material and the removal of bubbles in the small space inside the annular wearable, effectively solving the technical problems that are difficult to overcome in traditional processes, and significantly improving the performance and long-term stability of the optical sensor. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, brief descriptions will be given below to the drawings needed to be used in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in these drawings without creative labor for those skilled in the art.

[0043] Fig. 1 is a flow chart of the production process of the annular wearable of the present application;

[0044] Fig. 2 is a flow chart of step S4 in Fig. 1;

[0045] Fig. 3 is a cross-sectional view of an embodiment of the intelligent ring of the present application.

[0046] Explanation of reference numerals:

[0047] 1, base element; 11, outer annular shell; 12, inner annular shell; 121, light-transmitting window; 122, charging interface; 13, bottom ring; 14, face ring; 15, face cover; 16, mounting cavity; 2, electronic element; 21, optical sensor; 22, circuit board; 23, battery; 24, charging component; 3, filler.

[0048] The implementation of the present application, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0050] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0051] In addition, the description of “first”, “second” and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first”, “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” throughout the text includes three solutions, for example, A and / or B includes A technical solution, B technical solution, and A and B simultaneously meet the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, and it must be based on the realization of a person of ordinary skill in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope of the present application.

[0052] An embodiment of the present application provides a production process of a ring-shaped wearable device. FIG. 1 is a flowchart of a production process of a ring-shaped wearable device provided by an embodiment of the present application.

[0053] Referring to FIG. 1, the production process of the ring-shaped wearable device includes:

[0054] S1, providing a basic element, the basic element includes an outer ring-shaped shell and an inner ring-shaped shell, an installation cavity is formed between the outer ring-shaped shell and the inner ring-shaped shell, an electronic element is arranged in the installation cavity, and a light-transmitting window is arranged on the inner ring-shaped shell at a position corresponding to an optical sensor of the electronic element;

[0055] Specifically, the outer ring-shaped shell and the inner ring-shaped shell are the main body structures of the ring-shaped wearable device, and both can be made of different materials. For example, the outer ring-shaped shell can be made of titanium, gold, K gold, silver, jade, etc. These materials not only have good strength and durability, but also meet the aesthetic needs of the wearer. The inner ring-shaped shell is usually made of plastic material, because plastic has good processing performance and electrical insulation, which is conducive to the installation and protection of electronic components, in addition, the inner ring-shaped shell can also be made of titanium metal material, which is insulated by process technology, and has the advantages of hardness and not easy to deform. The mounting cavity between the outer ring-shaped shell and the inner ring-shaped shell is used to accommodate electronic components. The electronic components include but are not limited to optical sensors, circuit boards, charging components, and batteries, etc. Among them, the optical sensor is a key component to realize the health monitoring function, and is usually installed near the inner ring-shaped shell. In order to ensure that the optical sensor can accurately detect the physiological signals of the wearer, a light-transmitting window corresponding to the position of the optical sensor needs to be provided on the inner ring-shaped shell. This light-transmitting window is usually made of transparent material, such as optical-grade plastic or glass, to ensure that the optical signal can pass through without obstacles. In the actual manufacturing process, the inner ring-shaped shell can be first made into a basic shape by injection molding, then a light-transmitting window is opened at the corresponding position, and finally the transparent material is fixed at the window position.

[0056] The assembly of the outer ring-shaped shell and the inner ring-shaped shell requires precise process. Specifically, first, the bottom periphery of the inner ring-shaped shell and the bottom ring are fixed by glue, then the circuit board, the charging component and the battery are wrapped inside the inner ring-shaped shell, and the circuit board and the battery are fixed in the cavity of the inner ring-shaped shell by wrapping with insulating paper. The top periphery of the outer ring-shaped shell and the face ring are fixed together by interference fit, and appropriate amount of sealant is added to strengthen the fixation. Finally, the bottom periphery of the outer ring-shaped shell and the bottom ring are fixed together by interference fit.

[0057] Please continue to refer to FIG. 1, S2, the inner surface of the mounting cavity is pretreated to enhance the adhesion of the thermosetting plastic material;

[0058] Specifically, in the embodiments of the present application, the thermosetting plastic material is preferably epoxy resin. Of course, in other embodiments, it can also be one or a combination of phenolic resin, polyurethane resin, unsaturated polyester resin, silicone resin, melamine formaldehyde resin, and alkyd resin. These materials exhibit good fluidity and plasticity during injection and molding stages, and can accurately fill small spaces, while after curing, they have excellent mechanical strength, weather resistance and electrical insulation.

[0059] Pre-treatment of the inner surface of the mounting cavity is a critical step to ensure good adhesion of the thermoset plastic material. This process first involves a thorough cleaning of the inner surface of the mounting cavity to remove all contaminants and impurities that can affect the adhesion of the thermoset plastic material. The cleaning process can use a cleaning agent such as isopropyl alcohol or ethanol, combined with ultrasonic cleaning technology to ensure thoroughness of cleaning. After cleaning, the inner surface of the mounting cavity needs to be dried, which can be done using a nitrogen gas purge or vacuum drying technology to remove residual moisture and solvents.

[0060] Next, the cleaned and dried surface is treated physically or chemically to increase the surface roughness and activity. Physical treatment methods include micro-blasting or plasma treatment. For example, micro-blasting with fine aluminum oxide powder can create a micro-scale roughness structure on the surface, increasing the mechanical interlocking force of the thermoset plastic material. Plasma treatment can produce active groups on the surface, increasing the surface energy, thereby enhancing the chemical adhesion of the thermoset plastic material. Chemical treatment methods can consider the use of silane coupling agents, which can form a molecular bridge on the metal or plastic surface, one end of which is combined with the substrate and the other end is combined with the thermoset plastic material, significantly improving the interfacial bonding strength.

[0061] During the treatment process, special attention needs to be paid to controlling the treatment parameters, such as the power and time of plasma treatment, or the concentration and action time of silane coupling agent, to ensure the consistency and repeatability of the treatment effect. For ring-shaped wearable devices, the treatment process also needs to consider the characteristics of different materials. For example, the metal outer ring shell and the plastic inner ring shell may need to use different pre-treatment methods. The metal surface may be more suitable for micro-blasting or acid etching, while the plastic surface may be more suitable for plasma treatment or chemical activation.

[0062] Please continue to refer to FIG. 1, S3, control the temperature of the outer ring shell to a first preset temperature, and control the temperature of the inner ring shell to a second preset temperature, the first preset temperature is higher than the second preset temperature, and the first preset temperature is lower than the curing initiation temperature of the thermoset plastic material;

[0063] Specifically, the specific values of the first preset temperature and the second preset temperature need to be determined according to the characteristics of the thermoset plastic material used. Generally, the curing initiation temperature of the thermoset plastic material (such as epoxy resin) is between 60°C and 80°C, so the first preset temperature should be lower than this range to avoid premature curing of the thermoset plastic material during injection. Taking this into account, in this embodiment, the first preset temperature is set to between 45°C and 55°C, which ensures good flowability of the thermoset plastic material and does not trigger the curing reaction.

[0064] For the second preset temperature, it is necessary to consider that the inner annular shell is made of plastic material, and the temperature cannot be too high to affect the structural stability of the plastic. At the same time, the second preset temperature also needs to maintain a certain temperature difference with the first preset temperature to create conditions conducive to the directional flow of thermosetting plastic material. Based on these considerations, the second preset temperature is set between 30°C and 40°C. This temperature range can ensure the stability of the inner annular shell material and form a temperature difference of 10°C to 20°C with the outer annular shell.

[0065] To achieve such precise temperature control, a heating and cooling system is required. For the outer annular shell, resistance heating or infrared heating technology can be used, which can quickly and uniformly heat the outer annular shell to the required temperature. For example, a ring of micro-resistance heating wire can be installed outside the outer annular shell, and the heating intensity can be adjusted by precisely controlling the current. At the same time, multiple temperature sensors need to be installed on the outer annular shell to monitor the temperature distribution in real time and ensure uniform temperature throughout the outer annular shell.

[0066] For the temperature control of the inner annular shell, a liquid cooling system can be considered. The liquid cooling system adjusts the temperature of the inner annular shell by controlling the temperature and flow of the cooling liquid.

[0067] Please continue to refer to Figure 1, S4, the pre-prepared thermosetting plastic material is injected into the installation cavity at a predetermined rate, and after the injection of the thermosetting plastic material is completed, the temperature of the outer annular shell is maintained at the first preset temperature and the temperature of the inner annular shell is maintained at the second preset temperature, and the base element is subjected to micro-vibration with an amplitude of not more than 0.5 mm for a preset duration of micro-vibration;

[0068] In an embodiment of the present application, before the pre-prepared thermosetting plastic material is injected into the installation cavity, the temperature of the pre-prepared thermosetting plastic material is controlled at a fourth preset temperature, and the value of the fourth preset temperature is the average of the first preset temperature and the second preset temperature.

[0069] Specifically, according to the first preset temperature (45°C to 55°C) and the second preset temperature (30°C to 40°C) described above, the fourth preset temperature should be in the range of 37.5°C to 47.5°C. For example, if the first preset temperature is 50°C and the second preset temperature is 35°C, the fourth preset temperature should be set to 42.5°C.

[0070] The purposes of controlling the temperature of the thermosetting plastic material mainly include the following aspects: firstly, setting the temperature of the thermosetting plastic material at the average of the first preset temperature and the second preset temperature can make the thermosetting plastic material better adapt to the temperature environment in the installation cavity during the injection process. When the thermosetting plastic material enters the installation cavity from the injector or the injection device, the thermosetting plastic material will immediately contact the outer annular shell and the inner annular shell with different temperatures. If the temperature of the thermosetting plastic material is close to the average of the two, the thermal shock can be minimized, and the sharp change or local solidification of the thermosetting plastic material caused by the sudden change of temperature can be avoided.

[0071] Secondly, this temperature setting helps to maintain the temperature gradient during the entire injection process. Since the temperature of the thermosetting plastic material is between the temperatures of the outer annular shell and the inner annular shell, it will not significantly change the original temperature distribution after entering the installation cavity. This ensures the continuous temperature gradient from the outer annular shell to the inner annular shell, which is beneficial to the directional flow and uniform distribution of the thermosetting plastic material. For example, when the thermosetting plastic material contacts the relatively hot outer annular shell, its viscosity will slightly decrease, which is beneficial to filling the outer area; and when the thermosetting plastic material flows to the relatively cold inner annular shell, its viscosity will gradually increase, which helps to reduce the formation and movement of air bubbles.

[0072] In addition, preheating the thermosetting plastic material to the fourth preset temperature can also improve the efficiency and controllability of the injection process. The preheated thermosetting plastic material has appropriate fluidity, which will not be difficult to inject due to too low temperature, nor will it solidify too quickly due to too high temperature. This just-right fluidity enables the operator or the automated device to accurately control the injection speed and pressure, thereby better controlling the filling process of the thermosetting plastic material.

[0073] In an embodiment of the present application, a mounting gap is formed between the sensor of the electronic component and the light-transmitting window;

[0074] Referring to FIG. 2, the S4 includes:

[0075] S4.1, injecting the thermosetting plastic material with a temperature of the fourth preset temperature from the mounting gap at an injection rate of 0.01-0.1 ml / s, and applying ultrasonic waves to the thermosetting plastic material in the installation cavity using an ultrasonic probe during the injection process, the duration of the ultrasonic waves being the same as the injection time of the thermosetting plastic material;

[0076] S4.2, after the injection of the thermosetting plastic material is completed, applying vibration with an amplitude of 0.05-0.2 mm and a frequency of 30-50 Hz to the base component for 30-90 seconds under the condition that the temperature of the outer annular shell is maintained at the first preset temperature and the temperature of the inner annular shell is maintained at the second preset temperature.

[0077] Specifically, the thermosetting plastic material is injected at the installation gap with a temperature of the fourth preset temperature, and the purpose of this process is to ensure that the thermosetting plastic material can uniformly fill the entire installation cavity, especially the critical area between the optical sensor and the light-transmitting window. The injection rate is controlled in the range of 0.01-0.1 ml / s, so as to avoid the generation of bubbles or the uneven distribution of the thermosetting plastic material due to too fast injection while ensuring sufficient filling. For example, if the total volume of the installation cavity is 2 ml, the complete injection process may take 20-200 seconds.

[0078] During the injection process, the thermosetting plastic material in the installation cavity is subjected to ultrasonic waves using an ultrasonic probe, and the main purpose of this step is to reduce and eliminate the micro-bubbles in the thermosetting plastic material through acoustic energy. The principle of the ultrasonic waves is to generate micro-cavitation bubbles in the liquid through high-frequency vibration, and these bubbles will generate local high temperature and high pressure when they collapse, which helps to break the bubbles in the thermosetting plastic material and promote their dissolution or escape. The duration of the ultrasonic waves is consistent with the injection time of the thermosetting plastic material, so as to ensure that the bubbles are continuously eliminated throughout the injection process, while avoiding the negative effects of excessive use of ultrasonic waves, such as local overheating or changes in the properties of the thermosetting plastic material.

[0079] After the injection of the thermosetting plastic material is completed, the base element is subjected to vibration with specific parameters. The purpose of this step is to further optimize the distribution of the thermosetting plastic material and eliminate residual micro-bubbles. During this process, the temperatures of the outer annular shell and the inner annular shell are maintained at the first preset temperature and the second preset temperature, respectively, in order to maintain a temperature gradient that is beneficial to the flow of the thermosetting plastic material and the elimination of bubbles. The amplitude of the vibration is set in the range of 0.05-0.2 mm, and the frequency is 30-50 Hz. A smaller amplitude can avoid excessive disturbance to the already filled thermosetting plastic material, while the selected frequency range can effectively promote the movement and merging of micro-bubbles. For example, if a frequency of 40 Hz is used, the thermosetting plastic material will experience 1200 micro-vibrations during a 30-second vibration process, which is sufficient to break the possible static balance and promote the movement of residual bubbles to the surface or their mutual merging. The duration is set to 30-90 seconds, so as to fully exert the effect of vibration while avoiding the negative effects of long-time vibration, such as delamination of the thermosetting plastic material or displacement of the components.

[0080] In one embodiment of the present application, the process of using an ultrasonic probe in S4.1 includes:

[0081] An ultrasonic probe with a frequency of 15-25 kHz and a power of 10-30 W is selected;

[0082] The ultrasonic probe is placed outside the light-transmitting window, maintaining a certain distance between the active end of the ultrasonic probe and the outer surface of the light-transmitting window;

[0083] The ultrasonic probe is controlled to move circumferentially along the outer edge of the light-transmitting window.

[0084] Specifically, the use of an ultrasonic probe is a key step, which aims to optimize the distribution of thermosetting plastic-like material and eliminate micro-bubbles through precisely controlled ultrasonic energy. An ultrasonic probe with a frequency of 15-25 kHz and a power of 10-30 W is selected. This frequency range is chosen because it can effectively transfer energy into the thermosetting plastic-like material without damaging electronic components. For example, a frequency of 20 kHz means 20,000 compression and expansion cycles per second, which is sufficient to generate micro-cavitation bubbles in the thermosetting plastic-like material. When these bubbles collapse, they can generate local high temperature and pressure, which helps to break and eliminate micro-bubbles in the thermosetting plastic-like material. At the same time, a power range of 10-30 W provides sufficient energy to process the thermosetting plastic-like material, while avoiding excessive heat accumulation or mechanical stress.

[0085] Placing the ultrasonic probe outside the light-transmitting window allows the ultrasonic energy to act directly on the most critical area, i.e. the thermosetting plastic-like material filling area between the optical sensor and the light-transmitting window. By maintaining a certain distance between the active end of the ultrasonic probe and the outer surface of the light-transmitting window, it can ensure effective transmission of ultrasonic energy while avoiding damage caused by direct contact. This distance is usually between a few millimeters and one centimeter, depending on the design of the ultrasonic probe and the structure of the annular wearable device. For example, if the distance is set to 5 mm, the ultrasonic wave can effectively penetrate the light-transmitting window and act on the internal thermosetting plastic-like material without directly contacting the light-transmitting window.

[0086] The ultrasonic probe is controlled to move circumferentially along the outer edge of the light-transmitting window. This motion pattern ensures that the ultrasonic energy can be uniformly distributed throughout the critical area. The speed and range of circumferential motion need to be carefully adjusted to match the injection speed and viscosity of the thermosetting plastic-like material. For example, if the diameter of the light-transmitting window is 10 mm, the ultrasonic probe may move along the outer edge of the light-transmitting window at a speed of 1-2 mm per second, which can ensure that each part of the thermosetting plastic-like material is adequately treated by ultrasonic waves during the injection process. This dynamic treatment method is more effective than fixed-position ultrasonic treatment, as it can avoid creating "dead zones" where certain areas are too far from the fixed ultrasonic source to be adequately treated.

[0087] Please continue to refer to FIG. 1, S5, the temperature of the entire base element is raised to a third preset temperature, so that the thermosetting plastic-like material is cured and formed.

[0088] In one embodiment of the present application, the S5 comprises uniformly raising the base element to 60-80°C at a rate of 1-2°C / min and maintaining for 60-90 minutes to allow the thermosetting plastic-like material to cure, during which a slight vibration with an amplitude of 0.05-0.1 mm and a duration of 3-5 seconds is applied to the base element every 15-20 minutes.

[0089] Specifically, the third preset temperature is in the range of 60-80°C. This temperature range is chosen based on the following considerations: first, it is higher than the curing initiation temperature of most thermosetting plastic-like materials, which can promote the crosslinking of the thermosetting plastic-like material and form a stable three-dimensional network structure; second, this temperature range does not significantly affect the plastic material of the inner annular shell, avoiding deformation or performance degradation due to overheating; finally, this temperature range is within the safe operating temperature of most electronic components, and does not negatively affect the functionality of the annular wearable device.

[0090] In actual operation, this process can be implemented using a segmented heating approach. For example, the temperature can be slowly raised from the temperature at which the thermosetting plastic-like material is injected (i.e., the fourth preset temperature, typically between 37.5°C and 47.5°C) to 60°C at a rate of 1-2°C / min, and maintained at this temperature for 30 minutes to allow the thermosetting plastic-like material to begin curing. Then, the temperature is raised to 70°C at the same rate, and maintained for 60 minutes, which promotes deeper crosslinking of the thermosetting plastic-like material. Finally, if higher crosslinking is required, the temperature can be further increased to 80°C and maintained for 30 minutes. This gradual heating and holding process not only ensures that the thermosetting plastic-like material is fully cured, but also minimizes the accumulation of internal stress that can be caused by rapid temperature changes.

[0091] The heating rate of 1-2°C / min is carefully calculated. This slow heating process ensures uniform heat distribution and avoids stress accumulation or bubble formation due to local overheating. For example, if the temperature is raised from room temperature 25°C to 70°C, it takes about 22.5-45 minutes, which is sufficient time for the entire base element to warm up evenly.

[0092] During the curing process, the base element is subjected to a slight vibration with an amplitude of 0.05-0.1 mm and a duration of 3-5 seconds every 15-20 minutes. This intermittent micro-vibration has multiple effects: first, it can break the local stress concentration that may form during the curing process, helping the thermosetting plastic material to cure more uniformly. Second, this vibration can promote the movement and elimination of residual bubbles. Finally, the micro-vibration can also fine-tune the flow of the thermosetting plastic material, filling any small gaps that may exist. For example, if the entire curing process lasts 75 minutes, the base element will undergo 4-5 such micro-vibrations. Each vibration lasts 3-5 seconds, with an amplitude of 0.05-0.1 mm, and this slight disturbance is sufficient to produce the above effects without damaging the structure of the thermosetting plastic material that has already begun to cure.

[0093] Please continue to refer to Figure 1, S6, cool the base element to room temperature, and package the base element.

[0094] In one embodiment of the present application, the cooling of the base element to room temperature comprises: slowly reducing the temperature of the base element at a rate of 0.5-1 °C / min; when the temperature is reduced to 15-20 °C lower than the third preset temperature, maintaining this temperature for 30-45 minutes to complete the post-curing process of the thermosetting plastic material, and then continuing to reduce the temperature to room temperature at the same rate.

[0095] Specifically, first, the temperature of the base element is slowly reduced at a rate of 0.5-1 °C / min. This slow cooling rate allows the thermosetting plastic material and the various components to release heat uniformly, reducing the accumulation of internal stress. For example, if the third preset temperature is 80 °C, the target of the first stage of temperature reduction is 60-65 °C, and this process takes about 15-40 minutes.

[0096] When the temperature is reduced to 15-20 °C lower than the third preset temperature, i.e., 60-65 °C, the temperature is maintained for 30-45 minutes. This stage is called the post-curing process, which is crucial for improving the final performance of the thermosetting plastic material. At this temperature, the molecules of the thermosetting plastic material still have some activity and can undergo further cross-linking reactions, but at the same time, new internal stress is not introduced. For example, if 62 °C is chosen to be maintained for 40 minutes, this time is sufficient for the thermosetting plastic material to reach more than 95% of its final strength, while also allowing other components of the ring-shaped wearable, such as the inner and outer ring-shaped shells, to gradually adapt to the temperature change.

[0097] After the post-curing process is completed, the temperature is continued to be lowered at a rate of 0.5-1℃ / min to room temperature. This stage can be further subdivided, for example, a 15-20 minute pause is added when the temperature is lowered to 40℃. This segmented cooling method can further reduce the accumulation of internal stress, especially considering the difference in the coefficient of thermal expansion of different materials inside the ring-shaped wearable, such as the metal outer ring-shaped shell and the plastic inner ring-shaped shell. By pausing at different temperature points, the different materials are allowed to adjust gradually, thereby minimizing the internal stress that may be caused by the difference in thermal expansion.

[0098] The entire cooling process usually takes 2-4 hours, which may seem long, but is crucial for ensuring the long-term stability and reliability of the ring-shaped wearable. During the cooling process, a precision temperature control system such as a liquid circulating cooling system can be used to ensure precise control of temperature changes. At the same time, a micro-fan can be installed in the cooling chamber to ensure uniform temperature distribution and avoid stress concentration caused by uneven local cooling.

[0099] When the base element is finally cooled to room temperature, a comprehensive quality check is required. This includes using a high-precision optical microscope to check whether the thermosetting plastic material has micro-cracks or delamination, especially in the critical areas around the optical sensor and light-transmitting window. In addition, X-ray detection equipment can be used to check the integrity of the internal structure, ensuring that the cooling process has not caused displacement or damage to the internal elements.

[0100] The next step is the packaging step, which aims to protect the internal elements and improve the aesthetic and durability of the product. The packaging process first requires cleaning the surface of the base element to remove any dust or fingerprints that may be present. Then, a pre-prepared face cover is installed on the base element. The material of the face cover is usually selected to be the same or similar to that of the outer ring-shaped shell to ensure the consistency of the overall appearance. Special attention should be paid to the sealing when installing the face cover, and a thin layer of sealant is usually applied to the contact surface. This sealant can provide effective waterproof and dustproof performance after curing.

[0101] Another embodiment of the present application also provides a smart ring, which will be described in detail below in conjunction with the accompanying drawings.

[0102] Figure 3 is a cross-sectional view of one structure of the smart ring. Specifically, the smart ring includes a base component 1, an electronic component 2, and a filler 3. The base component 1 includes an outer ring-shaped shell 11, an inner ring-shaped shell 12, a bottom ring 13, a face ring 14, and a face cover 15. The outer ring-shaped shell 11 and the inner ring-shaped shell 12 are oppositely arranged. The bottom periphery of the outer ring-shaped shell 11 is connected with the bottom periphery of the inner ring-shaped shell 12 through the bottom ring 13. The top periphery of the outer ring-shaped shell 11 is connected with the face ring 14. The outer ring-shaped shell 11, the inner ring-shaped shell 12, the bottom ring 13, and the face ring 14 jointly define a mounting cavity 16. An opening is formed between the face ring 14 and the top periphery of the inner ring-shaped shell 12, which communicates with the mounting cavity 16. The face cover 15 covers the opening. The inner ring-shaped shell 12 is provided with a light-transmitting window 121.

[0103] The electronic component 2 is arranged in the mounting cavity 16. The electronic component 2 includes an optical sensor 21, which is oppositely arranged with the light-transmitting window 121.

[0104] The filler 3 is formed by curing a thermosetting plastic material. The filler 3 fills the mounting cavity 16.

[0105] Specifically, the smart ring is split into two parts, which allows for more flexible material selection and a more precise manufacturing process. Compared with a ring with an integrated structure, the smart ring of the present application has significantly improved material compatibility. The outer ring-shaped shell 11 is made of a precious metal to enhance the appearance and durability, while the inner ring-shaped shell 12 is made of plastic to optimize the working environment of the electronic component 2. Secondly, the manufacturing flexibility is greatly enhanced, and each component can be manufactured and optimized separately. At the same time, the split structure makes it easier to repair or upgrade when needed without replacing the entire ring. During the manufacturing process, this design allows more precise control of the size and shape of each component, especially the alignment of the light-transmitting window 121 and the sensor. In addition, this design provides more possibilities for personalized customization, and users can easily replace the outer ring-shaped shell 11 made of different materials or colors.

[0106] Overall, this design takes into account functionality, reliability, and aesthetics, providing more possibilities for mass production and personalized customization of smart rings, enabling smart rings to achieve higher levels in terms of performance, appearance, and user experience.

[0107] In specific implementation, the material of the inner ring-shaped shell 12 is plastic or titanium. The material of the outer ring-shaped shell 11 is at least one of titanium, gold, K gold, silver, or jade. The material of the bottom ring 13 is at least one of titanium, gold, K gold, silver, or jade. The material of the face ring 14 is at least one of titanium, gold, K gold, silver, or jade. The material of the face cover 15 is at least one of titanium, gold, K gold, silver, or jade.

[0108] In some embodiments, the electronic components 2 include a circuit board 22 and a battery 23;

[0109] The optical sensor 21 is disposed on the circuit board 22;

[0110] The circuit board 22 is electrically connected with the battery 23;

[0111] The circuit board 22 and the battery 23 are respectively disposed in two positions spaced 180 degrees in circumference within the mounting cavity 16, so as to balance the weight distribution of the smart ring.

[0112] Specifically, the circuit board 22 and the battery 23 are arranged in two opposite positions within the mounting cavity 16, and the included angle between them is 180 degrees. This means that if the smart ring is placed flat and viewed from above, the circuit board 22 and the battery 23 will be located at the two ends of a diameter.

[0113] The purpose of this design mainly reflects in two aspects of counterweight and wearing direction. First, from the perspective of counterweight, the circuit board 22 and the battery 23 are usually the two heaviest components inside the smart ring. Placing them in opposite positions can make the weight distribution more balanced, avoiding the discomfort caused by the over-weight of one side of the ring when worn. This balanced weight distribution can improve the wearing comfort, so that the user will not feel excessive pressure on one side of the finger when wearing for a long time.

[0114] Secondly, in terms of wearing direction, this design allows the user to wear the smart ring at any angle without affecting its functionality or comfort. No matter how the ring is rotated, the weight distribution remains balanced. This feature is particularly important because it eliminates the need for the user to consider a specific wearing direction, increasing the convenience of using the product. In addition, balanced weight distribution also helps to maintain the stability of the optical sensor 21, because no matter how the ring is rotated, the sensor will not be offset or change in pressure due to uneven gravity distribution, thereby ensuring the accuracy and consistency of the measurement data.

[0115] In some embodiments, the inner ring-shaped shell 12 is provided with a charging interface 122, and the electronic components 2 include charging components 24 disposed in the mounting cavity 16 and electrically connected with the battery 23 and the circuit board 22 respectively, and the charging components 24 are exposed through the charging interface 122. The design of providing the charging interface 122 on the inner ring-shaped shell 12 takes into account the convenience of use and the aesthetics of the product. By setting the charging interface 122 on the inner ring-shaped shell 12 instead of the outer ring-shaped shell 11, the appearance design of the ring can be maintained while ensuring the charging function, so that the product remains beautiful and neat in the non-charging state.

[0116] The charging component 24 is exposed through the charging interface 122, meaning that the user can directly connect the charging line to the charging interface 122 without disassembling or opening the ring for charging. This design greatly improves the daily use convenience of the product, and the user can easily charge the smart ring without complex operation.

[0117] The above merely describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the inventive concept of the present application and the content of the specification and drawings are included in the patent protection scope of the present application.

Claims

1. A production process of a ring-shaped wearable, characterized by, The method comprises the following steps: S1, providing a basic element comprising an outer ring-shaped shell and an inner ring-shaped shell, a mounting cavity is formed between the outer ring-shaped shell and the inner ring-shaped shell, an electronic element is arranged in the mounting cavity, and a light-transmitting window is arranged on the inner ring-shaped shell at a position corresponding to an optical sensor of the electronic element; S2, pre-treating the inner surface of the mounting cavity to enhance the adhesion of the thermosetting plastic material; S3, controlling the temperature of the outer ring-shaped shell at a first preset temperature, controlling the temperature of the inner ring-shaped shell at a second preset temperature, the first preset temperature is higher than the second preset temperature, and the first preset temperature is lower than the curing initiation temperature of the thermosetting plastic material; S4, injecting the pre-prepared thermosetting plastic material into the mounting cavity at a predetermined rate, after the injection of the thermosetting plastic material is completed, maintaining the temperature of the outer ring-shaped shell at the first preset temperature and the temperature of the inner ring-shaped shell at the second preset temperature, and applying a micro-vibration with an amplitude of not more than 0.5 mm to the basic element for a preset micro-vibration time; S5, raising the temperature of the whole basic element to a third preset temperature to make the thermosetting plastic material cured and formed; S6, cooling the basic element to room temperature and packaging the basic element.

2. The production process of a ring-shaped wearable according to claim 1, characterized in that, Before injecting the pre-prepared thermosetting plastic material into the mounting cavity, the temperature of the pre-prepared thermosetting plastic material is controlled at a fourth preset temperature, and the value of the fourth preset temperature is the average of the first preset temperature and the second preset temperature.

3. The production process of a ring-shaped wearable according to claim 2, characterized in that, An installation gap is formed between the sensor of the electronic element and the light-transmitting window; The S4 comprises: S4.1, injecting the thermosetting plastic material with a temperature of the fourth preset temperature from the installation gap, the injection rate is 0.01-0.1 ml / s, and an ultrasonic probe is used to apply ultrasonic waves to the thermosetting plastic material in the mounting cavity during the injection process, and the duration of the ultrasonic waves is the same as the injection time of the thermosetting plastic material; S4.2, after the injection of the thermosetting plastic material is completed, maintaining the temperature of the outer ring-shaped shell at the first preset temperature and the temperature of the inner ring-shaped shell at the second preset temperature, and applying a vibration with an amplitude of 0.05-0.2 mm and a frequency of 30-50 Hz to the basic element for 30-90 seconds.

4. The production process of a ring-shaped wearable according to claim 3, characterized in that, The process of using the ultrasonic probe in S4.1 comprises: selecting an ultrasonic probe with a frequency of 15-25 kHz and a power of 10-30 W; placing the ultrasonic probe outside the light-transmitting window, maintaining a distance between the acting end of the ultrasonic probe and the outer surface of the light-transmitting window; controlling the ultrasonic probe to make circumferential motion along the outer edge of the light-transmitting window.

5. The production process of a ring-shaped wearable of claim 1, wherein, The S5 comprises: uniformly raising the basic element to 60-80℃ at a rate of 1-2℃ / min and maintaining for 60-90 minutes to make the thermosetting plastic material cured and formed, and applying a slight vibration to the basic element every 15-20 minutes during the process, the vibration lasts for 3-5 seconds, and the amplitude is 0.05-0.1 mm.

6. The production process of a ring-shaped wearable of claim 1, wherein, The cooling of the base element to room temperature comprises: The temperature of the base element is slowly reduced at a rate of 0.5-1℃ / min; when the temperature is reduced to 15-20℃ lower than the third preset temperature, the temperature is kept for 30-45 minutes to complete the post-curing process of the thermosetting plastic material, and then the temperature is continuously reduced to room temperature at the same rate.

7. A smart ring, characterized by The smart ring is made by the production process of the ring-shaped wearable device according to any one of claims 1-6, and the smart ring comprises: A base element (1) comprising an outer ring-shaped shell (11), an inner ring-shaped shell (12), a bottom ring (13), a face ring (14) and a face cover (15), the outer ring-shaped shell (11) and the inner ring-shaped shell (12) are oppositely arranged, the bottom periphery of the outer ring-shaped shell (11) is connected with the bottom periphery of the inner ring-shaped shell (12) through the bottom ring (13), the top periphery of the outer ring-shaped shell (11) is connected with the face ring (14), the outer ring-shaped shell (11), the inner ring-shaped shell (12), the bottom ring (13) and the face ring (14) jointly define a mounting cavity (16), an opening communicating with the mounting cavity (16) is formed between the top periphery of the face ring (14) and the inner ring-shaped shell (12), the face cover (15) covers the opening, and a light-transmitting window (121) is arranged on the inner ring-shaped shell (12); An electronic element (2) arranged in the mounting cavity (16), the electronic element (2) comprising an optical sensor (21), the optical sensor (21) is oppositely arranged with the light-transmitting window (121); A filler (3) formed by curing of a thermosetting plastic material, the filler (3) fills the mounting cavity (16).

8. The smart ring of claim 7, wherein, The material of the inner ring-shaped shell (12) is plastic or titanium; and / or, The material of the outer ring-shaped shell (11) is at least one of titanium, gold, K gold, silver or jade; and / or, The material of the bottom ring (13) is at least one of titanium, gold, K gold, silver or jade; and / or, The material of the face ring (14) is at least one of titanium, gold, K gold, silver or jade; and / or, The material of the face cover (15) is at least one of titanium, gold, K gold, silver or jade.

9. The smart ring of claim 7, wherein, The electronic element (2) comprises a circuit board (22) and a battery (23); The optical sensor (21) is arranged on the circuit board (22); The circuit board (22) is electrically connected with the battery (23); The circuit board (22) and the battery (23) are respectively arranged at two positions spaced 180 degrees along the circumference in the mounting cavity (16), so that the weight of the smart ring is evenly distributed.

10. The smart ring of claim 9, wherein, A charging interface (122) is arranged on the inner ring-shaped shell (12), the electronic element (2) comprises a charging component (24) arranged in the mounting cavity (16) and electrically connected with the battery (23) and the circuit board (22) respectively, and the charging component (24) is exposed through the charging interface (122).

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