A structure of integrated arrangement of elastic sheets, a voice coil motor and an electronic product

Abstract

The utility model relates to a kind of integrated arrangement structure of elastic sheet, voice coil motor and electronic product, integrated arrangement structure of elastic sheet includes the upper elastic sheet and lower elastic sheet of nested arrangement, multiple inner ring connecting parts and multiple outer frame connecting parts, the lower elastic sheet is located in the internal cavity region of upper elastic sheet as a whole, multiple inner ring connecting parts are distributed along the radial inner side area of the upper elastic sheet and lower elastic sheet circumferentially, and bridged between the inner ring of both;Multiple outer frame connecting parts are distributed along the radial outer side area of the upper elastic sheet and lower elastic sheet circumferentially, and bridged between the outer frame of both.The utility model is synergistically designed by nested arrangement structure and distributed bridging connection, while improving material utilization, using internal and external double positioning mechanism to guarantee processing geometric precision, and optimizing stress distribution to maintain the movement degree of freedom of chord silk structure in dynamic deformation process.

Description

Technical Field

[0001] This utility model relates to the field of precision drive device manufacturing, and in particular to a spring integrated arrangement structure, a voice coil motor, and electronic products. Background Technology

[0002] In conventional production of voice coil motor springs, the upper and lower springs are manufactured separately using different panels. This process requires separate material layout for each type of spring, resulting in a large amount of unused space on the metal sheet surface. Due to the differences in the outer geometry of the upper and lower springs, it is difficult to achieve complementary edge spacing during panel layout, leading to a relatively high proportion of material removal area. Furthermore, panel manufacturing requires two independent etching or stamping processes, which not only increases process complexity but may also cause alignment errors in the spring assembly due to positioning reference deviations during process transitions. Existing technologies have attempted to optimize the topology of individual springs to improve material utilization, but have failed to overcome the inherent limitations of panel manufacturing, and an effective solution for the coordinated utilization of space between springs has not yet been developed. Utility Model Content

[0003] In view of this, the present invention provides a spring integrated arrangement structure, a voice coil motor and electronic products. This structure optimizes the material arrangement through space reuse, which can improve the utilization efficiency of the sheet metal.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A spring-loaded integrated arrangement structure includes nested upper and lower springs, multiple inner ring connecting parts, and multiple outer frame connecting parts. The lower spring is located entirely within the internal cavity region of the upper spring. The multiple inner ring connecting parts are circumferentially distributed along the radially inner regions of the upper and lower springs and bridge between their inner rings. The multiple outer frame connecting parts are circumferentially distributed along the radially outer regions of the upper and lower springs and bridge between their outer frames.

[0006] Through a collaborative design of nested arrangement and distributed bridging connections, material utilization is improved while ensuring machining geometric accuracy using an internal and external dual positioning mechanism. Stress distribution is also optimized to maintain the freedom of movement of the wire structure during dynamic deformation. Specifically, the nested arrangement structure achieves an overlapping layout of the two types of springs in a two-dimensional plane by housing the lower spring entirely within the cavity of the upper spring. This spatial reuse method changes the traditional independent material distribution pattern, allowing the central and edge areas of the metal sheet to be utilized simultaneously. Multiple inner ring connectors are distributed circumferentially along the radially inner region and bridge between the inner rings of the two springs, maintaining the relative positioning accuracy of the lower and upper springs during etching. Meanwhile, multiple outer frame connectors are distributed circumferentially along the radially outer region and bridge between the two outer frames, forming a joint constraint on the outer contour. This dual positioning mechanism ensures the geometric stability of the nested structure during stamping or etching processes, reducing the risk of dimensional deviations due to material deformation.

[0007] Based on the synergistic effect of nested structure and distributed bridging connections, this design optimizes material utilization efficiency. Traditional separate manufacturing requires reserving outer frame cutting allowances for the upper and lower springs separately, while this integrated structure only requires a single boundary allowance on the outermost side of the assembly, and the transition area between springs is compressed to its physical limit. The circumferential distribution pattern of multiple bridging connections facilitates the uniform diffusion of processing stress, avoiding microcrack problems caused by local stress concentration. In addition, the clear division of radial inner and outer regions allows the connections to avoid the functional working area of ​​the springs, ensuring the dynamic deformation freedom of the springs in the drive module.

[0008] Preferably, the upper and lower spring sheets have a axially symmetrical arrangement of their wire structures.

[0009] The rotational axisymmetric structure gives the upper and lower springs perfectly symmetrical mechanical properties. When the springs are used in voice coil motors, this ensures uniform distribution of electromagnetic driving force and prevents lens or sensor components from skewing during movement. This symmetry also simplifies mold design and manufacturing process parameter setting, eliminating the need to distinguish directionality during manufacturing and reducing the risk of assembly errors.

[0010] Preferably, the lower spring is composed of four independent split string wire units, and the string wire structure of each split string wire unit is distributed in a mirror-symmetrical manner with respect to the center point.

[0011] By configuring the lower spring as four independent split-wire units, with their wire topology mirror-symmetric at the center point, the local degrees of freedom of the spring system are significantly improved. When the voice coil motor is operating, the wire of each split unit can independently deform in response to the electromagnetic driving force, effectively absorbing mechanical vibrations in different directions and enhancing the anti-interference capability of electronic products. The split design also reduces the risk of stress concentration in a single spring unit. When the motor frequently starts and stops, the motion load is distributed among the four units, significantly extending the fatigue life of the spring. Furthermore, the gaps between the split units provide space for thermal expansion, preventing overall structural deformation caused by temperature changes and ensuring position control accuracy in precision driving scenarios.

[0012] Preferably, the center lines of the four separate string units form a cross shape.

[0013] The cross-shaped arrangement allows the separate string element units to form orthogonal supports in the circumferential direction, maximizing the use of the spring mounting space while providing a balanced force support point for the drive coil. This geometry is particularly suitable for optical image stabilization systems requiring bidirectional displacement compensation, exhibiting symmetrical restoring force characteristics in the X and Y axes.

[0014] Preferably, the lower spring is composed of two independent split string wire units, and the string wire structure of each split string wire unit is distributed in a mirror-symmetrical manner with respect to the central axis.

[0015] Employing two separate string units with mirror-symmetrical string structures along the central axis simplifies structural complexity while maintaining fundamental motion stability. This dual-unit configuration is particularly suitable for unidirectional linear drive applications, such as axial displacement control in autofocus motors. The two spring units simultaneously provide counter-restoring forces, enabling moving parts to quickly return to their center position and improving motor response speed. This design also reduces the number of connection points, lowers manufacturing complexity, and further optimizes production costs while maintaining performance. The symmetrical layout of the dual-unit string units maintains consistent restoring force direction, preventing torque fluctuations during movement.

[0016] Preferably, the outer frame of the upper spring sheet is provided with an avoidance opening that extends through its thickness.

[0017] The through-thickness clearance opening provides a physical channel for the movement of the lower spring's separate unit, preventing mechanical interference between the upper spring's outer frame and the lower spring during dynamic operation. This opening design frees up the deformation space of the spring system, ensuring that the spring can bend freely during the motor's large stroke. The smooth transition at the opening edge also disperses stress concentration points, reducing the risk of breakage during long-term use.

[0018] Preferably, the inner ring connecting portion is a strip-shaped structure bridging the inner ring of the upper spring sheet and the inner ring of the lower spring sheet.

[0019] The strip-shaped connection structure significantly enhances the shear strength of the inner ring connection, effectively resisting radial stress during repeated deformation of the spring sheet. Compared to point connections, the strip bridging provides a continuous load transfer path, avoiding stress concentration in localized micro-areas and significantly improving the durability of the connection. This design also increases the tolerance of the etching process; the strip structure is less sensitive to etching precision, reducing the defect rate during manufacturing.

[0020] Preferably, the outer frame connecting part is a strip structure bridging the upper spring sheet outer frame and the lower spring sheet outer frame.

[0021] The outer frame strip connection structure establishes stable external boundary constraints in the spring system, preventing misalignment of the upper and lower springs under external impact. The distributed connection method of strip bridging disperses the force on the outer frame, avoiding the concentration of vibration energy at a single connection point and improving the damping characteristics of the overall structure.

[0022] Preferably, a voice coil motor includes the spring-integrated arrangement structure described above.

[0023] The voice coil motor employing the aforementioned spring-integrated arrangement structure optimizes material costs at the core drive component level. Because the spring system is integrated with the connecting parts through a nested design, the number of parts in the motor assembly process is reduced, simplifying supply chain management complexity. This structure also improves the consistency of the motor's mechanical response; the symmetrical arrangement of the nested spring wires ensures that the electromagnetic driving force is evenly transmitted to the moving parts, improving the positioning accuracy of autofocus and image stabilization. The integrated layout of the spring units reduces the internal space occupied by the motor, supporting the miniaturization design of the device.

[0024] Preferably, an electronic product includes a voice coil motor as described above.

[0025] Electronic products based on voice coil motors with integrated spring-loaded structures achieve improved reliability at the system level. The symmetrical distribution of the string in the spring unit makes lens compensation motion smoother, reducing unexpected shake captured by the image sensor. The reinforced design of the spring-loaded connection also extends the module's lifespan in high-frequency use environments of mobile devices, reducing the risk of image stabilization degradation due to spring failure.

[0026] The advantages of this utility model compared to the prior art are:

[0027] 1. Improved Material Efficiency Through Space Reuse: By nesting the lower spring clip entirely within the internal cavity of the upper spring clip, both types of spring clips share the same layout space. This structure eliminates redundant boundary allowance areas in separate sheet fabrication, merging the cutting loss areas belonging to the upper and lower spring clips in traditional solutions into a single transition zone. Multiple inner ring connections and outer frame connections are distributed in specific radially inner and outer areas. While ensuring structural connection functionality, its bridging design controls minimum physical dimensions, further reducing material usage in non-functional areas. This space reuse mechanism increases the effective utilization area of ​​the sheet metal, making it possible to reduce unit production costs.

[0028] 2. Enhanced Structural Stability Through Distributed Connections: Multiple inner ring connectors distributed circumferentially bridge the inner rings of the two spring clips, working in conjunction with similar outer frame connectors on the radially outer side to form a coordinated internal and external positioning constraint system. During the etching process, this distributed connection mode resists the deformation tendency of the metal sheet caused by local stress release, maintaining the geometric integrity of the nested structure. Compared to the secondary positioning performed during the assembly stage of traditional separate components, this integrated structure reduces the introduction of alignment errors, contributing to improved dimensional consistency of the final product.

[0029] 3. Coordinated Optimization of Functional and Connecting Areas: The inner ring connecting section is clearly defined as being located in the radially inner region, while the outer frame connecting section is located in the radially outer region. This spatially isolates the connecting structure from the string deformation zone, ensuring no rigid interference during the string's radial reciprocating motion. This layout guarantees the required mechanical strength of the connecting section while preventing motion interference between the connecting structure and the spring deformation zone. Under dynamic operating conditions, the effective deformation area of ​​the spring maintains unimpeded displacement freedom, contributing to extended service life in precision drive scenarios. Simultaneously, the strip-shaped bridging structure provides a continuous load transfer path, mitigating stress concentration. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a structural diagram of the spring sheet integrated arrangement structure of Embodiment 1 of this utility model.

[0032] Figure 2 This is a color schematic diagram of the spring sheet integrated arrangement structure of Embodiment 1 of this utility model.

[0033] Figure 3This is a structural diagram of the spring sheet integrated arrangement structure of Embodiment 2 of this utility model.

[0034] Figure 4 This is a color schematic diagram of the spring sheet integrated arrangement structure of Embodiment 2 of this utility model.

[0035] Figure 5 This is a structural diagram of the spring sheet integrated arrangement structure of Embodiment 3 of this utility model.

[0036] Figure 6 This is a color schematic diagram of the spring sheet integrated arrangement structure of Embodiment 3 of this utility model.

[0037] Figure 7 This is a structural diagram of the spring sheet integrated arrangement structure in Embodiment 4 of this utility model.

[0038] Figure 8 This is a color schematic diagram of the spring sheet integrated arrangement structure of Embodiment 4 of this utility model.

[0039] Labeling explanation: 1 upper spring piece, 1a clearance opening, 2 lower spring piece, 3 inner ring connecting part, 4 outer frame connecting part. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0042] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this application, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this application is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0044] The technical solutions in this application will now be described with reference to the accompanying drawings. Example 1

[0045] Reference Appendix Figure 1-2 This embodiment provides a spring-loaded integrated arrangement structure, including a nested upper spring 1 and lower spring 2, multiple inner ring connecting parts 3, and multiple outer frame connecting parts 4. The lower spring 2 is entirely located within the internal cavity region of the upper spring 1. The multiple inner ring connecting parts 3 are circumferentially distributed along the radially inner regions of the upper spring 1 and the lower spring 2, bridging the inner rings of the two; the multiple outer frame connecting parts 4 are circumferentially distributed along the radially outer regions of the upper spring 1 and the lower spring 2, bridging the outer frames of the two. (See attached diagram) Figure 2 The color diagrams allow for quick identification of the upper spring 1 and the lower spring 2, facilitating technical understanding.

[0046] The nested arrangement structure achieves an overlapping layout of the two types of springs in a two-dimensional planar space by housing the lower spring 2 entirely within the internal cavity of the upper spring 1. This spatial reuse method changes the traditional material distribution pattern of independent arrangement, allowing the central and edge areas of the metal sheet to be utilized simultaneously. Multiple inner ring connecting parts 3 are distributed circumferentially along the radially inner region and bridge between the inner rings of the two springs, maintaining the relative positioning accuracy of the lower spring 2 and the upper spring 1 during the etching process; while multiple outer frame connecting parts 4 are distributed circumferentially along the radially outer region and bridge between the two outer frames, forming a joint constraint on the outer contour. This dual positioning mechanism enables the nested structure to maintain geometric stability during stamping or etching processes, reducing the risk of dimensional deviations caused by material deformation.

[0047] Based on the synergistic effect of nested structure and distributed bridging connections, this design optimizes material utilization efficiency. Traditional separate manufacturing requires reserving outer frame cutting allowances for the upper and lower springs separately, while this integrated structure only requires a single boundary allowance on the outermost side of the assembly, and the transition area between springs is compressed to its physical limit. The circumferential distribution pattern of multiple bridging connections facilitates the uniform diffusion of processing stress, avoiding microcrack problems caused by local stress concentration. In addition, the clear division of radial inner and outer regions allows the connections to avoid the functional working area of ​​the springs, ensuring the dynamic deformation freedom of the springs in the drive module.

[0048] In this embodiment, the upper spring 1 and the lower spring 2 have a string structure that enables elastic deformation, and the string structures of the upper spring 1 and the lower spring 2 form a rotationally symmetrical structure. The lower spring 2 is composed of four independent separate string units.

[0049] The rotational axisymmetric layout of the wire structure gives the upper and lower springs perfectly symmetrical mechanical properties. When the springs are used in a voice coil motor, this ensures the uniform distribution of electromagnetic driving force and prevents the lens or sensor components from skewing during movement. This symmetry also simplifies mold design and production process parameter setting, eliminating the need to distinguish the directionality of the wire during manufacturing and reducing the risk of assembly errors.

[0050] In this embodiment, the center lines of the four separate string wire units form a cross shape.

[0051] The cross-shaped arrangement allows the separate string element units to form orthogonal supports in the circumferential direction, maximizing the use of the spring mounting space while providing a balanced force support point for the drive coil. This geometry is particularly suitable for optical image stabilization systems requiring bidirectional displacement compensation, exhibiting symmetrical restoring force characteristics in the X and Y axes.

[0052] In this embodiment, the inner ring connecting part 3 is a strip-shaped structure that bridges the inner ring of the upper spring piece 1 and the inner ring of the lower spring piece 2.

[0053] The strip-shaped connection structure significantly enhances the shear strength of the inner ring connection 3, effectively resisting radial stress during repeated deformation of the spring sheet. Compared to point connections, the strip bridging provides a continuous load transfer path, avoiding stress concentration in localized micro-areas and significantly improving the durability of the connection. This design also increases the tolerance of the etching process; the strip structure is less sensitive to etching precision, reducing the defect rate during manufacturing.

[0054] In this embodiment, the outer frame connecting part 4 is a strip structure that bridges the outer frame of the upper spring piece 1 and the outer frame of the lower spring piece 2.

[0055] The outer frame strip connection structure establishes stable external boundary constraints in the spring system, preventing misalignment of the upper and lower springs under external impact. The distributed connection method of strip bridging disperses the force on the outer frame, avoiding the concentration of vibration energy at a single connection point and improving the damping characteristics of the overall structure. Example 2

[0056] Reference Appendix Figure 3-4 This embodiment provides a spring sheet integrated arrangement structure, including an upper spring sheet 1 and a lower spring sheet 2 nested together, multiple inner ring connecting parts 3 and multiple outer frame connecting parts 4. The lower spring sheet 2 is located entirely within the internal cavity area of ​​the upper spring sheet 1. The multiple inner ring connecting parts 3 are distributed circumferentially along the radially inner side area of ​​the upper spring sheet 1 and the lower spring sheet 2, and bridge between the inner rings of the two. The multiple outer frame connecting parts 4 are distributed circumferentially along the radially outer side area of ​​the upper spring sheet 1 and the lower spring sheet 2, and bridge between the outer frames of the two.

[0057] The nested arrangement structure achieves an overlapping layout of the two types of springs in a two-dimensional planar space by housing the lower spring 2 entirely within the internal cavity of the upper spring 1. This spatial reuse method changes the traditional material distribution pattern of independent arrangement, allowing the central and edge areas of the metal sheet to be utilized simultaneously. Multiple inner ring connecting parts 3 are distributed circumferentially along the radially inner region and bridge between the inner rings of the two springs, maintaining the relative positioning accuracy of the lower spring 2 and the upper spring 1 during the etching process; while multiple outer frame connecting parts 4 are distributed circumferentially along the radially outer region and bridge between the two outer frames, forming a joint constraint on the outer contour. This dual positioning mechanism enables the nested structure to maintain geometric stability during stamping or etching processes, reducing the risk of dimensional deviations caused by material deformation.

[0058] Based on the synergistic effect of nested structure and distributed bridging connections, this design optimizes material utilization efficiency. Traditional separate manufacturing requires reserving outer frame cutting allowances for the upper and lower springs separately, while this integrated structure only requires a single boundary allowance on the outermost side of the assembly, and the transition area between springs is compressed to its physical limit. The circumferential distribution pattern of multiple bridging connections facilitates the uniform diffusion of processing stress, avoiding microcrack problems caused by local stress concentration. In addition, the clear division of radial inner and outer regions allows the connections to avoid the functional working area of ​​the springs, ensuring the dynamic deformation freedom of the springs in the drive module.

[0059] In this embodiment, the upper spring 1 and the lower spring 2 have a string structure that enables elastic deformation. The lower spring 2 is composed of four independent split string units, and the string structure of each split string unit is mirror-symmetrically distributed with respect to the center point.

[0060] The lower spring 2 is configured as four independent split-wire units, with the wire topology mirror-symmetric at the center point, significantly improving the local degrees of freedom of the spring system. When the voice coil motor is operating, the wire of each split unit can independently deform in response to the electromagnetic driving force, effectively absorbing mechanical vibrations in different directions and enhancing the anti-interference capability of electronic products. The split design also reduces the risk of stress concentration in a single spring unit. When the motor frequently starts and stops, the motion load is distributed among the four units, significantly extending the fatigue life of the spring. Furthermore, the gaps between the split units provide space for thermal expansion, preventing overall structural deformation caused by temperature changes and ensuring position control accuracy in precision driving scenarios.

[0061] In this embodiment, the center lines of the four separate string wire units form a cross shape.

[0062] The cross-shaped arrangement allows the separate string element units to form orthogonal supports in the circumferential direction, maximizing the use of the spring mounting space while providing a balanced force support point for the drive coil. This geometry is particularly suitable for optical image stabilization systems requiring bidirectional displacement compensation, exhibiting symmetrical restoring force characteristics in the X and Y axes.

[0063] In this embodiment, the inner ring connecting part 3 is a strip-shaped structure that bridges the inner ring of the upper spring piece 1 and the inner ring of the lower spring piece 2.

[0064] The strip-shaped connection structure significantly enhances the shear strength of the inner ring connection 3, effectively resisting radial stress during repeated deformation of the spring sheet. Compared to point connections, the strip bridging provides a continuous load transfer path, avoiding stress concentration in localized micro-areas and significantly improving the durability of the connection. This design also increases the tolerance of the etching process; the strip structure is less sensitive to etching precision, reducing the defect rate during manufacturing.

[0065] In this embodiment, the outer frame connecting part 4 is a strip structure that bridges the outer frame of the upper spring piece 1 and the outer frame of the lower spring piece 2.

[0066] The outer frame strip connection structure establishes stable external boundary constraints in the spring system, preventing misalignment of the upper and lower springs under external impact. The distributed connection method of strip bridging disperses the force on the outer frame, avoiding the concentration of vibration energy at a single connection point and improving the damping characteristics of the overall structure. Example 3

[0067] Reference Appendix Figure 5-6This embodiment provides a spring sheet integrated arrangement structure, including an upper spring sheet 1 and a lower spring sheet 2 nested together, multiple inner ring connecting parts 3 and multiple outer frame connecting parts 4. The lower spring sheet 2 is located entirely within the internal cavity area of ​​the upper spring sheet 1. The multiple inner ring connecting parts 3 are distributed circumferentially along the radially inner side area of ​​the upper spring sheet 1 and the lower spring sheet 2, and bridge between the inner rings of the two. The multiple outer frame connecting parts 4 are distributed circumferentially along the radially outer side area of ​​the upper spring sheet 1 and the lower spring sheet 2, and bridge between the outer frames of the two.

[0068] The nested arrangement structure achieves an overlapping layout of the two types of springs in a two-dimensional planar space by housing the lower spring 2 entirely within the internal cavity of the upper spring 1. This spatial reuse method changes the traditional material distribution pattern of independent arrangement, allowing the central and edge areas of the metal sheet to be utilized simultaneously. Multiple inner ring connecting parts 3 are distributed circumferentially along the radially inner region and bridge between the inner rings of the two springs, maintaining the relative positioning accuracy of the lower spring 2 and the upper spring 1 during the etching process; while multiple outer frame connecting parts 4 are distributed circumferentially along the radially outer region and bridge between the two outer frames, forming a joint constraint on the outer contour. This dual positioning mechanism enables the nested structure to maintain geometric stability during stamping or etching processes, reducing the risk of dimensional deviations caused by material deformation.

[0069] Based on the synergistic effect of nested structure and distributed bridging connections, this design optimizes material utilization efficiency. Traditional separate manufacturing requires reserving outer frame cutting allowances for the upper and lower springs separately, while this integrated structure only requires a single boundary allowance on the outermost side of the assembly, and the transition area between springs is compressed to its physical limit. The circumferential distribution pattern of multiple bridging connections facilitates the uniform diffusion of processing stress, avoiding microcrack problems caused by local stress concentration. In addition, the clear division of radial inner and outer regions allows the connections to avoid the functional working area of ​​the springs, ensuring the dynamic deformation freedom of the springs in the drive module.

[0070] In this embodiment, the upper spring 1 and the lower spring 2 have a string structure that enables elastic deformation. The lower spring 2 is composed of two independent split string units, and the string structure of each split string unit is mirror-symmetrically distributed with respect to the central axis.

[0071] Employing two separate string units with mirror-symmetrical string structures along the central axis simplifies structural complexity while maintaining fundamental motion stability. This dual-unit configuration is particularly suitable for unidirectional linear drive applications, such as axial displacement control in autofocus motors. The two spring units simultaneously provide counter-restoring forces, enabling moving parts to quickly return to their center position and improving motor response speed. This design also reduces the number of connection points, lowers manufacturing complexity, and further optimizes production costs while maintaining performance. The symmetrical layout of the dual-unit string units maintains consistent restoring force direction, preventing torque fluctuations during movement.

[0072] In this embodiment, the inner ring connecting part 3 is a strip-shaped structure that bridges the inner ring of the upper spring piece 1 and the inner ring of the lower spring piece 2.

[0073] The strip-shaped connection structure significantly enhances the shear strength of the inner ring connection 3, effectively resisting radial stress during repeated deformation of the spring sheet. Compared to point connections, the strip bridging provides a continuous load transfer path, avoiding stress concentration in localized micro-areas and significantly improving the durability of the connection. This design also increases the tolerance of the etching process; the strip structure is less sensitive to etching precision, reducing the defect rate during manufacturing.

[0074] In this embodiment, the outer frame connecting part 4 is a strip structure that bridges the outer frame of the upper spring piece 1 and the outer frame of the lower spring piece 2.

[0075] The outer frame strip connection structure establishes stable external boundary constraints in the spring system, preventing misalignment of the upper and lower springs under external impact. The distributed connection method of strip bridging disperses the force on the outer frame, avoiding the concentration of vibration energy at a single connection point and improving the damping characteristics of the overall structure. Example 4

[0076] Reference Appendix Figure 7-8 This embodiment provides a spring sheet integrated arrangement structure, including an upper spring sheet 1 and a lower spring sheet 2 nested together, multiple inner ring connecting parts 3 and multiple outer frame connecting parts 4. The lower spring sheet 2 is located entirely within the internal cavity area of ​​the upper spring sheet 1. The multiple inner ring connecting parts 3 are distributed circumferentially along the radially inner side area of ​​the upper spring sheet 1 and the lower spring sheet 2, and bridge between the inner rings of the two. The multiple outer frame connecting parts 4 are distributed circumferentially along the radially outer side area of ​​the upper spring sheet 1 and the lower spring sheet 2, and bridge between the outer frames of the two.

[0077] The nested arrangement structure achieves an overlapping layout of the two types of springs in a two-dimensional planar space by housing the lower spring 2 entirely within the internal cavity of the upper spring 1. This spatial reuse method changes the traditional material distribution pattern of independent arrangement, allowing the central and edge areas of the metal sheet to be utilized simultaneously. Multiple inner ring connecting parts 3 are distributed circumferentially along the radially inner region and bridge between the inner rings of the two springs, maintaining the relative positioning accuracy of the lower spring 2 and the upper spring 1 during the etching process; while multiple outer frame connecting parts 4 are distributed circumferentially along the radially outer region and bridge between the two outer frames, forming a joint constraint on the outer contour. This dual positioning mechanism enables the nested structure to maintain geometric stability during stamping or etching processes, reducing the risk of dimensional deviations caused by material deformation.

[0078] Based on the synergistic effect of nested structure and distributed bridging connections, this design optimizes material utilization efficiency. Traditional separate manufacturing requires reserving outer frame cutting allowances for the upper and lower springs separately, while this integrated structure only requires a single boundary allowance on the outermost side of the assembly, and the transition area between springs is compressed to its physical limit. The circumferential distribution pattern of multiple bridging connections facilitates the uniform diffusion of processing stress, avoiding microcrack problems caused by local stress concentration. In addition, the clear division of radial inner and outer regions allows the connections to avoid the functional working area of ​​the springs, ensuring the dynamic deformation freedom of the springs in the drive module.

[0079] In this embodiment, the upper spring 1 and the lower spring 2 have a string structure that enables elastic deformation. The lower spring 2 is composed of two independent split string units, and the split string units are distributed in a mirror-symmetrical manner with respect to the central axis.

[0080] Employing two separate string line units symmetrically distributed along the central axis simplifies structural complexity while maintaining fundamental motion stability. This dual-unit configuration is particularly suitable for unidirectional linear drive applications, such as axial displacement control in autofocus motors. The two spring units simultaneously provide reverse restoring forces, enabling moving parts to quickly return to their center position and improving motor response speed. This design also reduces the number of connection points, lowers manufacturing complexity, and further optimizes production costs while maintaining performance. The symmetrical layout of the separate units maintains the consistency of the driving force direction, preventing torque fluctuations during movement.

[0081] In this embodiment, the outer frame of the upper spring 1 is provided with an avoidance opening 1a that extends through its thickness.

[0082] The through-thickness clearance opening 1a provides displacement space for the deformation of the split string unit of the lower spring 2, preventing the string from bending due to constraints imposed by the outer frame. This opening design releases the deformation space of the spring system, ensuring that the spring can bend freely during the large stroke of the motor. The smooth transition at the edge of the opening also disperses stress concentration points, reducing the risk of breakage during long-term use.

[0083] In this embodiment, the inner ring connecting part 3 is a strip-shaped structure that bridges the inner ring of the upper spring piece 1 and the inner ring of the lower spring piece 2.

[0084] The strip-shaped connection structure significantly enhances the shear strength of the inner ring connection 3, effectively resisting radial stress during repeated deformation of the spring sheet. Compared to point connections, the strip bridging provides a continuous load transfer path, avoiding stress concentration in localized micro-areas and significantly improving the durability of the connection. This design also increases the tolerance of the etching process; the strip structure is less sensitive to etching precision, reducing the defect rate during manufacturing.

[0085] In this embodiment, the outer frame connecting part 4 is a strip structure that bridges the outer frame of the upper spring piece 1 and the outer frame of the lower spring piece 2.

[0086] The outer frame strip connection structure establishes stable external boundary constraints in the spring system, preventing misalignment of the upper and lower springs under external impact. The distributed connection method of strip bridging disperses the force on the outer frame, avoiding the concentration of vibration energy at a single connection point and improving the damping characteristics of the overall structure. Example 5

[0087] This embodiment provides a voice coil motor, the core feature of which is the aforementioned integrated arrangement of spring contacts. This motor fully utilizes the significant advantages of the nested arrangement of spring contacts. In the construction of the core drive component, the upper and lower spring contacts are integrated through a nested design, and the inner ring connecting parts and outer frame connecting parts distributed radially on the inner and outer sides achieve integrated integration. This significantly reduces the number of independent parts that need to be handled during motor assembly, simplifying material management and reducing supply chain complexity. More importantly, this symmetrical structure, nested and securely connected by strip-shaped bridging parts, ensures that the electromagnetic driving force can be uniformly and consistently transmitted to the moving parts of the motor, thereby significantly improving the positioning accuracy and response consistency of the motor during autofocus or displacement compensation. Simultaneously, the highly compact integrated layout of the spring contact units effectively reduces the space required for the motor's internal structure, providing strong structural support for achieving thinner and more miniaturized design goals in terminal devices. Example 6

[0088] This embodiment provides an electronic product whose core driving component employs a voice coil motor incorporating the aforementioned integrated spring arrangement structure. The system-level performance of this electronic product is substantially improved due to the integrated spring structure. The spring unit, particularly the lower spring, adopts a split design (such as a four-unit cross-symmetric or two-unit axially symmetric design) combined with an overall rotationally symmetrical layout. This allows its moving parts to obtain smoother and more coordinated mechanical support when performing the required compensation or driving motion, effectively reducing the risk of moving part misalignment caused by asymmetrical restoring forces, thereby reducing unexpected jitter or motion deviation during system operation. Furthermore, the strip-shaped connecting portion design bridging the inner and outer rings of the upper and lower springs not only provides a robust connection but also effectively disperses dynamic stress due to its distributed layout, significantly enhancing the spring system's resistance to repeated deformation and external impacts. This structurally reinforced design effectively extends the overall lifespan and reliability of the electronic product, especially in high-frequency vibration and frequent use environments of mobile devices, reducing the possibility of core functional performance degradation due to spring assembly fatigue failure.

[0089] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spring-loaded integrated arrangement structure, characterized in that, include: The upper spring sheet (1) and the lower spring sheet (2) are nested together, with the lower spring sheet (2) located entirely within the internal cavity area of ​​the upper spring sheet (1); Multiple inner ring connecting parts (3) are distributed circumferentially along the radial inner side regions of the upper spring sheet (1) and the lower spring sheet (2), and bridge between the inner rings of the two; Multiple outer frame connecting parts (4) are distributed circumferentially along the radially outer region of the upper spring sheet (1) and the lower spring sheet (2), and bridge between the two outer frames.

2. The structure of claim 1, wherein, The upper spring (1) and the lower spring (2) have a chord structure that forms a rotationally symmetrical layout.

3. The structure of claim 1, wherein, The lower spring (2) is composed of 4 independent split string wire units, and the string wire structure of each split string wire unit is mirror-symmetrically distributed with respect to the center point.

4. The structure of claim 3, wherein, The center lines of the four separate string units form a cross shape.

5. The structure of claim 1, wherein The lower spring (2) is composed of two independent split string wire units, and the string wire structure of each split string wire unit is mirror-symmetrically distributed with respect to the central axis.

6. The structure of claim 1, wherein, The outer frame of the upper spring piece (1) is provided with a clearance opening (1a) that extends through its thickness.

7. The structure of claim 1, wherein, The inner ring connecting part (3) is a strip structure that bridges the inner ring of the upper spring piece (1) and the inner ring of the lower spring piece (2).

8. The structure of claim 1, wherein, The outer frame connecting part (4) is a strip structure that bridges the outer frame of the upper spring piece (1) and the outer frame of the lower spring piece (2).

9. A voice coil motor characterized by, Includes the spring-loaded integrated arrangement structure as described in any one of claims 1-8.

10. An electronic product, characterized in that, Includes the voice coil motor as described in claim 9.

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