A parameter design method for a key type raw ear and a key type raw ear transmission structure

Abstract

The present application realizes the systematic and parameterized design of the key type earring by constructing the multi-parameter quantitative correlation model matched with the key design parameters of the earring through the force transmission model, the stroke matching model and the spring adaptation model. The collaborative optimization of the force transmission model, the stroke matching model and the spring adaptation model makes the earring design change from the experience-dependent lagging debugging mode to the scientific processing early prediction and optimization design mode, can predict the performance of the earring product in advance, and process the earring parts according to the appropriate structure parameters, which is beneficial to reduce the development cost of the earring product, and also improves the reliability and consistency of the earring product quality. Moreover, the decoupling between different design parameters in the earring structure is realized through the quantitative correlation between parameters, so that the structure design, material selection, spring selection and other links of the earring can be independently and parallelly controlled accurately, which further standardizes the design guidance of earring processing, and improves the structure design efficiency, yield rate and performance consistency of mass production products of the earring.

Description

Technical Field

[0001] This invention relates to the technical field of components for smart wearable devices, and in particular to a parameter design method and transmission structure for a button-type spring ear. Background Technology

[0002] In wearable devices such as smartwatches and fitness trackers, button-type spring bars are a key component for quick-release strap connections, and the market demand for them is developing towards diversification and rapid iteration. However, existing button-type spring bars generally rely on experience-based processing and debugging during the design process, resulting in high development costs. Moreover, an imbalance between the pin travel and button force often occurs, leading to unstable spring bar performance, affecting the consistency of the operating feel and the reliability of spring bar assembly and disassembly.

[0003] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0004] This invention addresses the problems mentioned above, such as the high development cost of existing button-type spring bars due to their reliance on experience-based processing and debugging, and the frequent mismatch between pin travel and button force, which leads to unstable spring bar performance, affects the consistency of operation feel, and the reliability of spring bar assembly and disassembly. The invention proposes a parameter design method and a transmission structure for button-type spring bars.

[0005] The technical solution adopted by this invention to solve its technical problem is: A method for designing parameters for a button-operated spring ear includes at least the following steps: S1. Determine the design parameters for the push-button spring bar; the design parameters include the target value of the pin top force F. p Pin travel L p The slope angle θ and the system friction coefficient K; S2. Construct a force transmission model that is compatible with the slope angle θ and the system friction coefficient K, and determine the target value F of the pin ejection force based on the force transmission model. p The corresponding button force F; the force transmission model satisfies: 2F p =F·(sinθ Kcosθ)(cosθ Ksinθ); S3, Construct the pin travel L p A stroke matching model adapted to the slope angle θ is used to determine the stroke L of the pin. p The corresponding key travel distance L; the travel distance matching model is: L=L p ·tanθ; S4. Determine the target value F of the pin push-out force. pA matching spring model is used, and the target value F of the pin push-out force is determined based on the spring model. p The appropriate spring constant K s The spring fitting model is: K s =F p / (L p +δ), where δ is the spring pre-compression; S5. Using the system friction coefficient K as a fixed value, verify that the design range of the designed button force F is within the preset operating force range. If not, adjust the ramp angle θ and return to step S2 for iterative calculation; wherein the ramp angle θ ranges from 30° to 45°.

[0006] The parameter design method for a button-type spring ear as described above is characterized in that the slope angle θ ranges from 34° to 45°.

[0007] The parameter design method for a button-type spring ear as described above is characterized in that the slope angle θ ranges from 36° to 42°.

[0008] The parameter design method for a button-type spring bar as described above is characterized in that the target value F of the pin push-out force is... p The value range is 0.5N to 3.0N.

[0009] The parameter design method for a button-type spring bar as described above is characterized in that the pin travel L p The value range is 0.5mm to 1.5mm.

[0010] The parameter design method for a button-type spring ear as described above is characterized in that, in step S5, the preset operating force range is 5N to 12N.

[0011] The parameter design method for a button-type spring bar as described above is characterized in that the spring pre-compression amount δ is 0.5mm to 1.2mm.

[0012] The parameter design method for a button-type spring ear as described above is characterized in that the parameter design method further includes: S6. Prepare a sample of the button-type spring ear and collect multiple sets of button force F and corresponding pin push-out force F. p The measured value; S7. Substitute the measured values ​​into the force transmission model and stroke matching model to calculate the actual slope angle θ, and compare the actual slope angle θ with the design range to verify its effectiveness.

[0013] This invention also provides a button-type spring ear transmission structure. The transmission structure is designed using the parameter design method described above. The transmission structure is disposed in the outer shell of a button-type quick-release spring ear. The outer shell includes an outer tube and an upper cap. The transmission structure includes a button, at least one pin, and a transmission surface disposed between the pin and the button. The button is slidably disposed between the outer tube and the upper cap. The pin is slidably disposed inside the outer tube. The transmission surface has a ramp angle θ with the horizontal plane. The button slides with the pin through the transmission surface, so that the pin can extend and retract inside and outside the outer shell. The pin is also connected to an elastic element for extending the pin to the outside of the outer shell.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention constructs a multi-parameter quantitative correlation model that matches the key design parameters of spring ears through a force transmission model, a stroke matching model, and a spring adaptation model. This enables the systematic and parameterized design of push-button spring ears. Through the collaborative optimization of the force transmission model, the stroke matching model, and the spring adaptation model, spring ear design can be transformed from an experience-dependent, lagging debugging mode to a scientific, pre-predictive optimization design mode. This allows for the prediction of spring ear product performance in advance and the processing of spring ear parts based on appropriate structural parameters. This helps reduce the development cost of spring ear products and improves the reliability and consistency of spring ear product quality. Furthermore, the quantitative correlation between various parameters achieves decoupling between different design parameters in the spring ear structure, enabling independent and parallel precise control of spring ear structural design, material selection, spring selection, and other aspects. This further standardizes the design guidance for spring ear processing and improves the efficiency of spring ear structural design, yield rate, and performance consistency of mass-produced products. 2. Based on a suitable fixed value for the spring elasticity coefficient and the system friction coefficient, this invention can optimize the spring ear transmission structure by adjusting the ramp angle, thereby optimizing the operating feel and connection reliability of the spring ear. In terms of production design, it can enhance the autonomy of the design and development of new spring ear structures.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a flowchart of the button-type quick-release spring bar parameter design method of the present invention; Figure 2 This is a perspective view of the push-button quick-release spring bar of the present invention; Figure 3 for Figure 2 Section A-A in Figure 1 ; Figure 4 for Figure 2 Section A-A in Figure 2 ; Figure 5 for Figure 2 Section A-A in Figure 3 ; Figure 6 for Figure 2 Section A-A in Figure 4 . Detailed Implementation

[0017] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0019] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0020] Example 1: like Figures 1 to 6 As shown, the present invention provides a parameter design method for a button-type spring ear, which includes at least the following steps: S1. Determine the design parameters for the push-button spring bar; the design parameters include the target value of the pin top force F. p Pin travel L p The slope angle θ and the system friction coefficient K; S2. Construct a force transmission model that is compatible with the slope angle θ and the system friction coefficient K, and determine the target value F of the pin ejection force based on the force transmission model. p The corresponding button force F; the force transmission model satisfies: 2F p =F·(sinθ Kcosθ)(cosθ Ksinθ); S3, Construct the pin travel L p A stroke matching model adapted to the slope angle θ is used to determine the stroke L of the pin. p The corresponding key travel distance L; the travel distance matching model is: L=L p ·tanθ; S4. Determine the target value F of the pin push-out force. p A matching spring model is used, and the target value F of the pin push-out force is determined based on the spring model. p The appropriate spring constant K s The spring fitting model is: K s =F p / (L p +δ), where δ is the spring pre-compression; S5. Using the system friction coefficient K as a fixed value, verify that the design range of the designed button force F is within the preset operating force range. If not, adjust the ramp angle θ and return to step S2 for iterative calculation; wherein the ramp angle θ ranges from 30° to 45°.

[0021] This invention addresses the problems of existing button-type spring ear designs, which rely heavily on experience-based processing and debugging, resulting in high development costs and frequent mismatches between pin travel and button force, leading to unstable performance, inconsistent tactile feedback, and unreliable assembly / disassembly. This embodiment utilizes a force transmission model, a travel matching model, and a spring adaptation model to construct a multi-parameter quantitative correlation model that matches the key design parameters of the spring ear. This enables a systematic and parameterized design of button-type spring ear products. Through the synergistic optimization of these models, the spring ear design can shift from an experience-dependent, delayed debugging mode to a scientifically-driven, pre-planned optimization design mode. This allows for early prediction of spring ear product performance and, based on… Appropriate structural parameters for spring bar manufacturing help reduce the development cost of spring bar products and improve the reliability and consistency of spring bar product quality. Moreover, the quantitative correlation between various parameters achieves decoupling between different design parameters in the spring bar structure, enabling independent and parallel precise control of spring bar structural design, material selection, spring selection, and other aspects. This further standardizes the design guidance for spring bar manufacturing, improves the efficiency of spring bar structural design, yield rate, and performance consistency of mass-produced products. In addition, based on a suitable fixed value of spring elastic coefficient Ks and system friction coefficient K, this invention can optimize the spring bar transmission structure by adjusting the ramp angle θ, thereby optimizing the operating feel and connection reliability of the spring bar. In terms of production design, it can enhance the autonomy of new spring bar structural design and development.

[0022] Specifically, in steps S1 to S4, this embodiment constructs the force transmission model, which is preferably adapted to a spring bar transmission structure with double-sided telescopic pins to reduce the burden on the user's operating feel. Based on the force transmission model, the target value F of the pin push-out force can be accurately calculated. p The matching button force F enhances the matching degree between the pin ejection force and the button force, which helps improve the comfort of spring bar operation, reduce user fatigue, and improve the smoothness and reliability of spring bar assembly and disassembly. Furthermore, this embodiment, by constructing the aforementioned stroke matching model, can determine the spring bar stroke L based on the pin stroke L. p Accurately determining the key travel L ensures both a lightweight spring ear design and a compact spring ear transmission structure with smooth operation. Furthermore, by constructing the spring adaptation model and precisely calculating the spring coefficient Ks, the spring system is matched to the pin's push-out force requirements, improving the spring ear's connection reliability. Through these steps, multiple optimized spring ear design parameter combinations are obtained. Finally, using the system friction coefficient K as a fixed value, the design range of the ramp angle θ is determined. Combined with actual measurements of spring ear samples within the ramp angle design range, the key force F and pin push-out force F are obtained. p The actual value, and thus the button force F and the pin ejection force F p The actual value is compared with the target value to verify the effectiveness of the design range of the slope angle θ. If the requirements are not met, the slope angle θ is adjusted and iteratively optimized to form a closed-loop design process.

[0023] On the other hand, in practical applications, wearable devices such as smartwatches have rapid product iterations and a wide variety of types, leading to an increase in the specifications of the spring bars that match them. Designers can determine the pin travel L based on the spacing of the spring bars configured on the smart wearable device. p The target value, given a fixed spring specification, can be determined based on the spring fitting model and the pin travel L. p Matching pin ejection force F p Given a fixed system friction coefficient K, the ramp angle θ is adjusted according to the force transmission model to achieve a suitable button force F. Additionally, the button travel L can be determined based on the travel matching model; this ensures the pin travel L is satisfied. p and pin top output force F p Based on the requirements, the key force F and key travel L can be optimized by adjusting the ramp angle θ, thereby improving the user's operating feel. The spring ear parameter design method can also quickly adapt to the diverse and customized development and processing needs of spring ear specifications, which is conducive to reducing the cost of developing new spring ear products and realizing lightweight design of spring ear, improving the compactness of the spring ear structure.

[0024] As an optional embodiment of this solution, the slope angle θ ranges from 34° to 45°.

[0025] As another optional embodiment of this scheme, the slope angle θ ranges from 36° to 42°.

[0026] As an optional embodiment of this solution, the target value F of the pin push-out force is... p The value range is 0.5N to 3.0N, and the pin stroke L p The value range is 0.5mm to 1.5mm; the target value of the pin ejection force F p The value range of the pin and the pin travel L p The value range is based on a comprehensive consideration of ergonomics, the reliability of the spring ear structure, and the miniaturization requirements of spring ear products. Specifically, the pin top output force F p The lower limit of 0.5N ensures the reliability of the pin lifting action and its resistance to environmental interference (such as slight sticking), and the pin lifting force F p The upper limit of 3.0N avoids excessive button operation force (F) affecting the feel; pin travel (L) p The lower limit of 0.5mm ensures sufficient pin travel to achieve clear tactile feedback, and the pin travel L... p The upper limit of 1.5mm aligns with the design trend of wristwatches and other electronic products that pursue thinness and compactness. This is achieved by adjusting the target value F of the pin's top force. p The value range of the pin and the pin travel L p The coordinated optimization of the value range clarified the user's need for buttons to provide a clear tactile feel and a comfortable force, as well as the hardware constraints of the compact spring ear structure.

[0027] As an optional embodiment of this solution, in step S5, the preset operating force range is 5N to 12N. Specifically, the lower limit of the preset operating force range, 5N, can adapt to the button feel and minimum trigger force of various mainstream electronic products, improving the universality of the spring ear product. The upper limit of the preset operating force range, 12N, is adapted to the threshold range of human finger pressing comfort, which can prevent users from fatigued by long-term or repetitive operation, balancing the durability and operating comfort of the internal structure of the spring ear. In addition, the preset operating force range provides a reasonable and reliable design range benchmark, transforming subjective feel requirements into objective mechanical indicators, which facilitates subsequent spring selection and reasonable design of ramp angle. It also enhances the quality controllability of the spring ear product. The clear force range enables the standardization of button force testing on the production line, which is conducive to ensuring the consistency of feel of mass-produced products.

[0028] As an optional embodiment of this solution, the spring pre-compression amount δ is 0.5mm to 1.2mm. The range of the spring pre-compression amount δ is formed based on a comprehensive consideration of structural reliability, feel optimization, and fatigue life. Specifically, the lower limit of the spring pre-compression amount δ, 0.5mm, ensures that the spring has sufficient preload in the initial position to avoid false triggering of the button due to vibration or gravity, while providing clear force feedback for the initial pressing stage. The upper limit of the spring pre-compression amount δ, 1.2mm, prevents excessive compression that could lead to excessive spring stress or plastic deformation, while also taking into account the space compactness requirements of the thin and light design of the spring, thereby improving operational reliability, optimizing user experience, extending the service life of the spring, and enhancing the adjustability of the spring transmission system design.

[0029] Furthermore, the spring pre-compression amount δ is preferably 0.5 mm.

[0030] As an optional embodiment of this solution, the system friction coefficient K ranges from 0.1 to 0.3; wherein the system friction coefficient K is preferably 0.19. In this embodiment, the sliding pair in the spring ear transmission structure can be set as sliding between metals or between metal and plastic. Based on this, in order to improve the force transmission efficiency of the spring ear, the system friction coefficient K in the spring ear transmission structure is preset to 0.19, which can match the friction coefficient range between various metals or between metals and materials. This is beneficial for the selection and processing of spring ear materials. On this basis, the ramp angle θ is optimized, which simplifies the multivariable coupling design of the spring ear to a single variable control with the ramp angle θ as the core. This greatly improves the design efficiency of the spring ear, reduces the design complexity, facilitates the serial development of spring ear products, and ensures the consistency of the spring ear design output.

[0031] As another optional embodiment of this solution, after step S5, the spring ear parameter design method further includes: S6. Prepare a sample of the button-type spring ear and collect multiple sets of button force F and corresponding pin push-out force F. p The measured values; specifically, based on the optimized design parameter combination obtained in steps S1 to S5, spring ear samples can be manufactured, and multiple spring ear samples from the same production batch can be used as test objects to measure the key force F and pin ejection force F of each spring ear sample. p The measured value; S7. Substitute the measured values ​​into the force transmission model and stroke matching model to calculate the actual slope angle θ, and compare the actual slope angle θ with the design range to verify its effectiveness.

[0032] Taking a typical working condition as an example, with the system friction coefficient K=0.19 as a fixed value, this embodiment provides measured data of spring ear samples with different slope angles θ (as shown in Table 1 below) for analysis. The analysis results are as follows: Table 1: Measured data of raw ear samples (K=0.19, F p =1.2N, L p =1.0mm)

[0033] As shown in Table 1 above, when the ramp angle θ increases from 34° to 40°, the button force F decreases from 8.19N to 7.55N, and the operating feel is significantly improved. When the ramp angle θ exceeds 40°, the button force F tends to stabilize or even slightly increases. Therefore, it can be seen that when the ramp angle is set to 38° to 40°, the spring ear product can achieve the best operating feel.

[0034] On the other hand, for every 2° increase in the ramp angle θ, the key travel L increases by approximately 0.06 to 0.07 mm; specifically, when θ = 38°, L = 0.78 mm, and when θ = 42°, L = 0.90 mm, representing a 15% increase in travel. This demonstrates that when the ramp angle is designed to be no greater than 42°, the key travel L can be reduced, preventing the key travel L from being too long and affecting the appearance and structural compactness of the spring ear.

[0035] Furthermore, when K=0.19, the force transmission model is: 2F p =F·(sinθ Kcosθ)(cosθ From Ksinθ), we can further obtain the force transmission efficiency formula: η(θ) = (sinθ) / (sinθ) 0.19cosθ)(cosθ 0.19sinθ), where η(θ) reflects the transmission efficiency and affects F. p As shown in Table 1 above, the actual output stability of η(θ) reaches its peak (0.318) when the slope angle θ = 40° to 42°. At this time, the force transmission efficiency is the highest and the output is the most stable. However, if the slope angle θ is too large, it may lead to a steep slope and unstable pin return.

[0036] Therefore, when θ = 36° to 42°, the key force F and key travel L are better. Among them, when θ = 38° to 40°, it can meet the optimization requirements of key force F and key travel L. The slope angle θ is preferably 38°.

[0037] On the other hand, based on the above-mentioned spring ear parameter design method, the present invention also provides a decoupled spring ear manufacturing method, comprising: S100. Decoupling analysis is performed on the button-type spring bar structure. The button-type spring bar includes at least five components: outer tube 11, button 13, upper cover 14, elastic element 15, and pin 12. Design parameter combinations corresponding to each component are generated. The design parameter combinations include X parameter corresponding to the length of the outer tube and the length of the pin, B parameter corresponding to the height of the button, C parameter corresponding to the height of the upper cover, and F parameter corresponding to the force of the elastic element. The length of the outer tube and the length of the pin are matched. S200. Based on the design parameter combination (X, B, C, F), construct component libraries corresponding to each of the aforementioned components. Each component library includes at least an outer tube library storing outer tubes 11 with different X parameters, a button library storing buttons 13 with different B parameters, an upper cover library storing upper caps 14 with different C parameters, an elastic component library storing elastic elements 15 with different F parameters, and a pin library storing pins 12 that match each outer tube with different X parameters. The components in each component library meet the general assembly conditions for mutual assembly. These general assembly conditions are: any outer tube 11 in the outer tube library can be assembled with any button 13 in the button library, any upper cap 14 in the upper cap library, and any elastic element 15 in the elastic component library; and the pins 12 are assembled with the outer tube 11 according to the X parameters to form the button-type spring ear. S300. Based on the design parameter combination (X, B, C, F) of the target product, select the corresponding specification of outer tube, button, upper cylinder cover, elastic element and matching pin from the corresponding component library, and assemble them into the button-type spring ear. S400. Query whether there is a component of the corresponding specification in the component matrix library; if it exists, proceed to step S3; if it does not exist, import the component of the new specification; if the target design parameter is a new length X', process a new outer tube with the new length X' parameter, and add the new outer tube to the outer tube library, and at the same time prepare a pin to match the outer tube with the new length X' parameter and add it to the pin library; and / or, if the target design parameter is a new height B' or C', process a new button with the new height B' parameter, and / or, process a new upper cylinder cover with the new height C' parameter, and add the new button and the new upper cylinder cover to the button library and the upper cylinder cover library respectively; S500: Perform button force testing on the finished button-type spring earphones to verify whether the button force corresponding to parameter F is qualified; and perform CCD size testing on the finished button-type spring earphones to verify whether parameters L, B, and C are qualified; if all parameters are qualified, then package and ship.

[0038] This embodiment decouples and standardizes the key design parameters (length, height, force) of push-button spring ears, forming independent combinations of design parameters (L, B, C, F). Based on this, it constructs a standardized universal parts library of multiple components that can be assembled to form push-button spring ear products. This achieves modularization and universalization of the push-button spring ear production model. When facing diverse market demands for spring ear specifications, it can directly select modules such as the outer tube 11, push button 13, and spring with corresponding parameters from the existing standard parts library and quickly assemble the required products. The production line does not need to redevelop a complete set of molds and parts for each new specification, improving the efficiency of new spring ear product development and delivery. The reusability and mass production of semi-finished parts significantly reduce mold investment costs and product development costs. A single set of universal molds can support the production of a series of parameters, improving the versatility and compatibility of parts and their molds. This allows them to adapt to the processing needs of products with multiple specifications. In addition, the versatility of parts reduces the variety of raw materials and semi-finished products in the inventory of spring ear, optimizes the warehousing management of spring ear production materials, and reduces inventory pressure. The manufacturing method described above has created a spring ear supply chain that can flexibly adapt to small-batch, multi-variety orders. While ensuring consistent quality, it greatly improves the production system's responsiveness and competitiveness to the rapidly changing demands of the smart wearable device accessory market.

[0039] Specifically, such as Figure 6As shown, in step S100, parameter X represents the length dimension, which is related to the length of the outer tube 11 and the length H of its matching pin. This determines the overall length of the spring bar to accommodate different lug spacings. Parameter B represents the operation dimension, which is related to the height of the button 13, directly affecting the user's pressing feel and operating stroke. Parameter C represents the structural dimension, which is related to the height of the upper cap 14. This relates to the mating structure with the outer tube 11 and the overall appearance, enabling the spring bar product to adapt to the shape of the matching equipment. Parameter F represents the mechanical dimension, which is related to the force of the elastic element 15, i.e., the spring force, which determines the rebound force of the button 13 and the reliability of the final locking. Through step S100, the structural decoupling analysis and parametric design of the button-type spring bar product are carried out, laying the foundation and design rules for the subsequent modularization and generalization of spring bar processing, making product deformation-free. Instead of redesigning the entire product, only one or a few parameter values ​​need to be adjusted. Any change in any parameter only requires replacing the corresponding component. When the X parameter changes, the outer tube 11 and the matching pin 12 need to be replaced. For example, when designing spring bars with the same feel for two watches with different lug widths, the traditional manufacturing method requires designing two sets of almost completely different spring bar drawings and parts for the two watches. This is because changes in length will affect the internal space, which may force the redesign of the button 13, spring, etc. However, the manufacturing method described in this invention only needs to define different X parameters based on the lug spacing to determine the specifications and dimensions of the outer tube 11 and pin 12. The B, C, and F parameters that determine the feel can remain unchanged. In this way, the structural design of the spring bar becomes the selection and combination of key parameters, without the need to draw new drawings from scratch.

[0040] In step S200, based on the design parameter combinations defined in step S100, parts covering all commonly used specifications are pre-designed and manufactured for each type of component, and managed in categories to form outer tube libraries, button libraries, upper cover libraries, elastic component libraries, pin libraries, etc., and all parts in the libraries follow universal assembly conditions; for example, regardless of the length L value of an outer tube 11, the opening size for connecting the button 13 and the upper cover 14 is uniform; regardless of the force F value of a spring, its outer diameter and installation method are compatible; by implementing universal assembly conditions for the components in various component libraries, it is ensured that parts from different parameter combinations can be mutually adapted and assembled, improving the universality and compatibility of various components, and by changing the production preparation of spring ears from custom processing to inventory selection, the complexity of the supply chain and the production preparation time are greatly reduced.

[0041] The button 13 has a lateral outline W that fits the inner cavity of the outer tube 11, and a sliding fit is formed between the button 13 and the outer tube 11, so that the button 13 does not need to be changed when the length X of the outer tube changes; the upper cover 14 has an end connection portion that fits the inner cavity of the outer tube 11, so that the upper cover 14 does not need to be changed when the length X of the outer tube changes; the elastic element 15 is placed in the inner cavity of the outer tube 11 with a gap along its radial direction, that is, the outer diameter of the elastic element 15 is smaller than the diameter of the inner cavity of the outer tube 11, so that the elastic element 15 is radially close to the inner wall of the outer tube 11. There is a gap between them, so that the elastic element 15 does not need to be changed when the length X of the outer tube changes; the pin 12 can be telescopically set in the inner cavity of the outer tube 11, and the pin 12 is selected to match the outer tube 11 according to the X parameter; the outer tube, button, upper cover, elastic element and pin are universally assembled in the above manner to ensure the universality of each component when it is constructed to different specifications, so that product modification does not require redesigning the entire product, but only adjusting one or a few parameter values, and any parameter change only requires replacing the component corresponding to that parameter.

[0042] In practical applications, as shown in Table 2 below, this embodiment provides an example of a component library matrix combination formed between the outer tube library, button library, upper cylinder cover library, elastic component library, and pin library. When there are n types of outer tubes, m types of buttons, k types of upper cylinder covers, and p types of elastic components, then n×m×k×p finished product specifications can be combined between the outer tubes, buttons, upper cylinder covers, and elastic components. The number of component types is 2n+m+k+p, including n types of matching pins. By decomposing the spring ear product into four independent and orthogonal design dimensions—outer tubes, buttons, upper cylinder covers, and elastic components—the manufacturing system only needs to prepare and manage a limited number of standardized components (2n+m+k+p). These components can be freely combined through parameter-driven methods, covering up to n×m×k×p different finished product specifications. In other words, by establishing strict quality standards for dozens of standard parts, the quality of thousands of final products can be guaranteed. This reduces the number of spring ear component types, eliminates the need for new mold investment, reduces inventory management pressure, and is adaptable to the manufacturing of diverse spring ear products.

[0043] Table 2: Example of Component Library Matrix Combination

[0044] As shown in Table 2 above, each of the component libraries can be an intelligent warehouse corresponding to various types of components. Components of different types and specifications can be identified and stored through material tags to facilitate the storage, retrieval, and selection of components. It should be noted that the material tags can be adjusted and set by the producer, and no specific limitation is made here. Furthermore, a corresponding material code can be set for different component names and specifications, and the corresponding storage quantity can be recorded according to the material code, which is conducive to accurate material specification and quantity retrieval. This embodiment simplifies the manufacturing and processing method of spring ears by adopting decoupled parameter design and component matrix assembly collaborative operation. It changes the traditional spring ear processing method, which relies on strongly coupled design, special molds, and special parts, resulting in low processing efficiency, high mold costs, long development cycles, and poor component versatility and compatibility.

[0045] As an optional embodiment of this solution, in order to further simplify the processing steps of the button 13 and the upper cylinder cover 14, in step S2, the method for constructing the button library and / or the upper cylinder cover library is as follows: providing a standard blank with a fixed outer contour, and grinding the height dimension of the blank to process buttons 13 with different B parameters and / or upper cylinder covers 14 with different C parameters; in this embodiment, when constructing the component library in step S2, a standard blank with a completely fixed outer contour is provided in advance, and the height dimension of the blank is precisely adjusted only through subsequent targeted CNC grinding, and then the blank is ground according to the target B parameter or target C parameter setting. The amount of grinding removed can be within tolerance of ±0.05mm. Combined with surface finishing methods such as smoothing and polishing, the surface roughness can be no greater than 0.4μm. After grinding, the finished button 13 and the upper cylinder cover 14 can be directly included in the button library and the upper cylinder cover library. Through the above processing method, the processing method of multiple heights of the button and the upper cylinder cover from a single blank is realized. It can efficiently process buttons 13 with different B parameters and / or upper cylinder covers 14 with different C parameters, which is conducive to improving the processing quality of buttons 13 and upper cylinder covers 14, ensuring assembly with other parts, and eliminating the need to make height molds, thus reducing mold investment costs.

[0046] In this embodiment, the processing of the button 13 and the upper cover 14 involves two steps: unified contour forming and flexible height fine-tuning. This replaces the complex processing flow of traditional processing, which requires redesigning molds and opening individual molds for every minute change in size. By locking the main contour of the blank, such as the cross-sectional shape and key mating features of the connection interface, this embodiment ensures the consistency of the core structure of all variations of the button 13 and the upper cover 14. The "height" variable is handled by a low-cost and easily controllable grinding process, reducing the changeover cost of the production line, simplifying the processing steps, and condensing the manufacturing complexity of multi-specification parts into a single-dimensional size adjustment. This significantly improves processing efficiency and reduces the difficulty of process management. Secondly, through the batch prefabrication of standardized blanks and the rapid response of flexible grinding, the mold cost of the button 13 and the upper cover 14 is minimized and the material utilization is optimized, which strongly supports the production needs of low cost, large volume and diversification. In addition, while ensuring that all variant parts have universal interchangeability and assembly consistency, this method forms a process synergy with the fixed-length cutting processing method of the outer tube 11, achieving the goal of reducing overall cost and accelerating product iteration.

[0047] As an optional embodiment of this solution, each of the component libraries can be combined according to the design parameters to form component matrices with different dimensions. For example, the X parameter includes standard values ​​such as 15.9mm, 17.9mm, and 19.9mm, and the B parameter includes standard values ​​such as 0.8mm, 1.0mm, and 1.2mm. During production and assembly, the corresponding target specifications of the outer tube 11, pin 12, button 13, upper cap 14, and elastic element 15 can be directly selected from different component matrix libraries. Moreover, each component in the library meets the requirements of compatibility and reliability, which can reduce the selection risk and ensure the product quality of the spring ear. The component specification selection conditions or processing conditions of the spring ear product are generated by the arrangement and combination of various design parameters. When a new spring ear is needed, as long as its parameters are within the dimensional range of the matrix library, in actual production, only the existing standard semi-finished product needs to be cut to a fixed length according to the X parameter and / or polished according to the B and C parameters. At the same time, a suitable spring can be selected. Through standardized processes and components, large-scale customization of spring ear products of various specifications can be achieved, which can efficiently meet the personalized needs of smart wearable devices.

[0048] In step S400 of this embodiment, a query confirmation and subsequent processing step for new specification parts is introduced. This solves the technical problems that may occur when introducing new specification parts, such as component mismatch, chaotic inventory management, and extended production preparation cycle. It ensures the integrity and compatibility of new specification parts. By implementing paired warehousing management for outer tube 11 and pin 12, it avoids assembly failure or secondary modifications caused by introducing a single component. Secondly, it improves the systematicness and automation level of the expansion process, standardizing the import of parts as the synchronous update of library data, reducing manual intervention and error risks. Furthermore, it supports the dynamic optimization and knowledge accumulation of manufacturing resources, enabling the outer tube library and pin library to expand collaboratively, providing a structured data foundation for rapid response to similar orders in the future. Overall, this embodiment strengthens the operability and reliability of the expansion link in the intelligent closed-loop processing flow of spring ear, and promotes the improvement of the spring ear manufacturing system towards standardization, modularization, and adaptability.

[0049] In step S500, the button force detection simulates actual pressing operations using a button force detection device to measure and verify whether the button force of the finished product is consistent with the standard range required by the design parameter F (corresponding to the specific elastic element 15 specification), ensuring that the feel and function meet the standards. Additionally, CCD dimension detection uses a high-precision CCD vision system to perform non-contact scanning and comparison of key dimensions such as the outer tube length L, button 13 height B, and upper cap 14 height C of the finished product, verifying whether they are within the allowable tolerance zone, ensuring dimensional accuracy and assembly compatibility. Step S500 automates and objectifies the quality control of spring ears, reducing the traditional reliance on manual processes. The inspection method using calipers has been upgraded to a data-driven, fully automated inspection, improving inspection efficiency, consistency, and reliability. Secondly, a key feedback loop for intelligent closed-loop manufacturing has been completed, allowing inspection results to be fed back to the control module in real time. If a systematic deviation occurs (such as a batch of buttons having consistently low button force), it can trigger the tracing and adjustment of processing parameters or stored components, forming a complete closed loop for a specific component from production and inspection to optimization. Furthermore, the traceability and quality assurance of springbox products have been strengthened, providing objective inspection data records for each finished product. This not only meets high-standard quality management requirements but also provides data support for subsequent process optimization.

[0050] Example 2: like Figures 2 to 5As shown, the present invention also provides a button-type quick-release spring ear transmission structure. The transmission structure is designed using the parameter design method described above. The transmission structure is disposed in the outer shell of the button-type quick-release spring ear. The transmission structure includes a button 13, at least one pin 12, and a transmission surface 10 disposed between the pin 12 and the button 13. The outer shell includes an outer tube 11 and an upper cover 14. The button 13 is slidably disposed between the upper cover 14 and the outer tube 11. The pin 12 is slidably disposed inside the outer tube 11. The transmission surface 10 has a ramp angle θ with the horizontal plane. The button 13 slides with the pin 12 through the transmission surface 10, so that the pin 12 extends and retracts inside and outside the outer tube 11. The outer tube 11 is provided with a guide hole corresponding to the pin 12 to ensure the stable extension and retraction of the pin 12. The pin 12 is also connected to an elastic element 15 for extending the pin 12 to the outside of the outer tube 11. Optionally, the elastic element 15 is preferably a spring.

[0051] Furthermore, a transmission component is provided between the button 13 and the pin 12. The transmission component is fixedly connected to the pin 12, and the transmission component is slidably connected to the button 13 through the transmission surface 10. The vertical movement of the button 13 is converted into the horizontal movement of the pin 12 through the transmission surface 10, thereby allowing the pin 12 to extend and retract inside and outside the outer tube 11.

[0052] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A parameter design method for a button-type spring ear, characterized in that, It should include at least the following steps: S1. Determine the design parameters for the push-button spring bar; the design parameters include the target value of the pin top force F. p Pin travel L p The slope angle θ and the system friction coefficient K; S2. Based on the slope angle θ and the system friction coefficient K, construct a suitable force transmission model, and determine the target value F of the pin ejection force based on the force transmission model. p The corresponding button force F; the force transmission model satisfies: 2F p =F·(sinθ Kcosθ)(cosθ Ksinθ); S3, according to the pin travel L p Based on the slope angle θ, a suitable stroke matching model is constructed, and the stroke L of the pin is determined according to the stroke matching model. p The corresponding key travel distance L; the travel distance matching model is: L=L p ·tanθ; S4. Based on the target value F of the pin push-out force p A suitable spring adaptation model is constructed, and the target value F of the pin push-out force is determined based on the spring adaptation model. p The appropriate spring constant K s The spring fitting model is: K s =F p / (L p +δ), where δ is the spring pre-compression; S5. Using the system friction coefficient K as a fixed value, verify that the design range of the designed button force F is within the preset operating force range. If not, adjust the ramp angle θ and return to step S2 for iterative calculation; wherein the ramp angle θ ranges from 30° to 45°.

2. The parameter design method for a button-type spring ear as described in claim 1, characterized in that, The slope angle θ ranges from 34° to 45°.

3. The parameter design method for a button-type spring ear as described in claim 1 or 2, characterized in that, The slope angle θ ranges from 36° to 42°.

4. The parameter design method for a button-type spring ear as described in claim 1, characterized in that, The target value of the pin push-out force F p The value range is 0.5N to 3.0N.

5. The parameter design method for a button-type spring ear as described in claim 1, characterized in that, The pin travel L p The value range is 0.5mm to 1.5mm.

6. The parameter design method for a button-type spring ear as described in claim 1, characterized in that, In step S5, the preset operating force range is 5N to 12N.

7. The parameter design method for a button-type spring ear as described in claim 1, characterized in that, The pre-compression of the spring, δ, is 0.5 mm to 1.2 mm.

8. The parameter design method for a button-type spring ear as described in claim 1, characterized in that, The parameter design method further includes: S6. Prepare a sample of the button-type spring ear and collect multiple sets of button force F and corresponding pin push-out force F. p The measured value; S7. Substitute the measured values ​​into the force transmission model and stroke matching model to calculate the actual slope angle θ, and compare the actual slope angle θ with the design range to verify its effectiveness.

9. A transmission structure for a button-operated spring ear, characterized in that, The transmission structure is designed using the parameter design method as described in any one of claims 1 to 8. The transmission structure is disposed in the housing of a button-type quick-release spring bar. The housing includes an outer tube and an upper sleeve cover. The transmission structure includes a button, at least one pin, and a transmission surface disposed between the pin and the button. The button is slidably disposed between the outer tube and the upper sleeve cover. The pin is slidably disposed inside the outer tube. The transmission surface has a ramp angle θ with the horizontal plane. The button slides with the pin through the transmission surface, so that the pin can extend and retract inside and outside the housing. The pin is also connected to an elastic element for extending the pin to the outside of the housing.

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