A design method for quick docking structures and lightweight quick docking structures

Abstract

This application discloses a design method for a quick-connection structure and a lightweight quick-connection structure, relating to the field of mechanical device technology. Multiple first latches are spaced circumferentially along the top wall of a first housing, forming a receiving space with the inner sidewall of the first housing; multiple first guide rails are spaced along the height direction of their corresponding first latches; multiple second latches are spaced along the outer wall of a second housing, corresponding to the first latches; each second latch includes multiple second guide rails; the multiple second guide rails are spaced along the height direction of the second housing, corresponding to the first guide rails; one end of a fastener passes through the sidewall of the first housing and connects to a radial locking block, the radial locking block being located between adjacent first latches; an elastic element is disposed between the outer wall of the radial locking block and the inner sidewall of the first housing; the side of the radial locking block away from the elastic element is inclined downwards. This application offers more convenient operation, improves work efficiency, and reduces operational difficulty.

Description

Technical Field

[0001] This application relates to the field of mechanical device technology, and in particular to a design method for a quick docking structure and a lightweight quick docking structure. Background Technology

[0002] In the design and manufacturing of mechanical devices, quick and reliable connections between components are crucial for ensuring the overall performance and operational efficiency of the equipment. Threaded connections, as a traditional connection method, are widely used due to their ease of assembly and disassembly. However, in certain specific applications, such as clamps, where frequent and rapid clamping and unclamping are required, the limitations of fully threaded connections become apparent.

[0003] While fully threaded connections offer a degree of reliability and stability, their operation is relatively cumbersome in situations requiring rapid assembly and disassembly. Specifically, fully threaded connections require rotating multiple thread turns to tighten or loosen components. This not only consumes significant time and manpower but also leads to thread wear during frequent assembly and disassembly, resulting in reduced reliability and durability of the connection. Summary of the Invention

[0004] This application provides a design method for a quick-connection structure and a lightweight quick-connection structure, which solves the technical problem in the prior art where full-threaded connections require rotating multiple threaded rings to tighten or loosen components, resulting in time-consuming and labor-intensive processes.

[0005] In a first aspect, embodiments of this application provide a quick-connection structure, including a first connecting component, a second connecting component, a radial locking block, an elastic element, and a fastener; the first connecting component includes a first housing, a plurality of first latches, and a plurality of first guide rails; the plurality of first latches are spaced apart circumferentially along the top wall of the first housing and form a receiving space with the inner sidewall of the first housing; the plurality of first guide rails are spaced apart along the height direction of their corresponding first latches; the second connecting component includes a second housing and a plurality of second latches; the plurality of second latches are spaced apart along the outer wall of the second housing and correspond to the first latches; the second latches include a plurality of second guide rails; the plurality of second guide rails are spaced apart along the height direction of the second housing and correspond to the first latches. A guide rail corresponds to the first housing; one end of the fastener passes through the side wall of the first housing and is connected to the radial locking block, which is located between adjacent first latches; the elastic element is disposed between the outer wall of the radial locking block and the inner side wall of the first housing; the side of the radial locking block away from the elastic element is tilted downward; when locking the first connecting assembly and the second connecting assembly, the first latch is inserted between two adjacent second latches, and the radial locking block is pressed against the outer wall of one of the second latches, so that the elastic element is in a compressed state; the first housing is rotated so that the first guide rail is inserted between the two adjacent second guide rails corresponding to it. As the radial locking block gradually moves to the position between the two adjacent second latches, the elastic element returns to its initial state and pushes the radial locking block to the locking position.

[0006] In conjunction with the first aspect, in one possible implementation, the elastic element includes four first elastic hooks, two second elastic hooks, and two third elastic hooks; the four first elastic hooks are all disposed circumferentially on the side of the radial block facing the first housing; the two second elastic hooks and the two third elastic hooks are all disposed circumferentially on the side of the first housing facing the radial block and correspond to the first elastic hooks; the two third elastic hooks are all located below the two second elastic hooks and their length is less than the length of the two second elastic hooks, so that the radial block is tilted downwards.

[0007] In conjunction with the first aspect, in one possible implementation, the first housing is provided with a mounting hole, the radial locking block is provided with an internal thread; the fastener is provided with an external thread corresponding to the internal thread; one end of the fastener passes through the mounting hole and is connected to the internal thread.

[0008] In conjunction with the first aspect, in one possible implementation, the quick-connect structure further includes a snap-fit ​​rod; the fastener is provided with a snap-fit ​​hole; when it is necessary to circumferentially unlock the first connecting component and the second connecting component, the fastener is pulled to compress the elastic element, at which time the snap-fit ​​hole originally located inside the first housing is exposed to the outside of the first housing, and the snap-fit ​​rod is inserted into the snap-fit ​​hole to achieve circumferential unlocking.

[0009] In conjunction with the first aspect, in one possible implementation, the first latch is characterized by having four latches evenly disposed on the top wall of the first housing; and the second latch is characterized by having four latches evenly disposed on the outer wall of the second housing.

[0010] In conjunction with the first aspect, in one possible implementation, each second latch includes three second guide rails; each first latch is provided with two first guide rails.

[0011] In conjunction with the first aspect, in one possible implementation, the radial locking block is a hollow structure; the side of the first locking tongue away from the first guide rail is a first opening structure; and the side of the second guide rail facing the second housing is a second opening structure.

[0012] In conjunction with the first aspect, in one possible implementation, the second connecting component further includes a third housing; the third housing is disposed at the bottom of the second housing, and its outer diameter is larger than that of the second housing; the outer diameter of the first housing is equal to the outer diameter of the third housing.

[0013] Secondly, embodiments of this application provide a design method for a lightweight quick-connection structure, based on the first aspect or any possible implementation of the first aspect, the design method including:

[0014] S1: Determine the required design load and overall structural envelope dimensions based on the usage environment and functional requirements of the quick-connect structure;

[0015] S2: Based on the design load determined in S1, determine the dimensional parameters of the first connecting component, the second connecting component, and the radial block; wherein, the dimensional parameters include the inner radius, outer radius, central angle, and height of the first latch, the first guide rail, the second guide rail, and the radial block, and the inner and outer radii of the first latch, the first guide rail, the second guide rail, and the radial block can be determined according to the assembly relationship of the first connecting component and the second connecting component;

[0016] The formulas for calculating the central angles of the first latch, the first guide rail, and the second guide rail are as follows:

[0017]

[0018] Where θ is the central angle of the first latch, the first guide rail, and the second guide rail, and p max To represent the maximum axial load that the quick-connect structure can withstand in the working environment, R and r are the outer and inner radii of the first guide rail, the second guide rail, and the first latch, respectively, [σ x [This refers to the allowable tensile stress of the first latch, the first guide rail, and the second guide rail;]

[0019] The formulas for calculating the heights of the first latch, the first guide rail, and the second guide rail are as follows:

[0020]

[0021] Where h is the height of the first latch, the first guide rail, and the second guide rail; R and r are the outer and inner radii of the first latch, the first guide rail, and the second guide rail, respectively; θ is the central angle of the first latch, the first guide rail, and the second guide rail; q is the uniformly distributed load acting on the first latch, the first guide rail, and the second guide rail; [σ y [ ] represents the allowable bending moment stress of the first latch, the first guide rail, and the second guide rail;

[0022] S3: The first latch, the first guide rail, the second guide rail and the radial latch are lattice-processed, and the size of the lattice rod is determined by its stiffness and strength criteria;

[0023] The formula for calculating the dimensions of lattice members is as follows:

[0024]

[0025] Where, r design For the dimensions of the lattice member, [σ] x [ ] represents the allowable stress of the lattice member; F represents the axial load of the lattice member; ΔL max L represents the maximum deformation of the lattice member; E represents the length of the lattice member; and E represents the elastic modulus of the material.

[0026] S4: Based on the processed structural dimensions and shape in S3, generate an STL model that can be directly used for additive manufacturing, and at the same time generate an envelope shell model corresponding to the STL model. Superimpose and combine the STL model and the envelope shell model to ensure the matching of the two in terms of position and size, and obtain a combined model.

[0027] S5: Perform corresponding post-processing editing on the combined model to obtain the post-processed model;

[0028] S6: Export the post-processed model as an STL format file for additive manufacturing.

[0029] In conjunction with the second aspect, in one possible implementation, during S4, when generating the STL model, the mounting positions and shapes of the elastic elements and fasteners are determined.

[0030] One or more technical solutions provided in the embodiments of this application have at least the following technical effects:

[0031] The quick-connection structure provided in this application includes a first connecting component, a second connecting component, a radial locking block, an elastic element, and fasteners. When locking the first and second connecting components, the first latch is vertically inserted between two adjacent second latches until the bottom of the second latches, forming a coaxial connection between the first and second housings. At this time, the radial locking block abuts against the outer wall of one of the second latches, thus compressing the elastic element. Next, the first housing is rotated, causing the first guide rail to insert between two corresponding adjacent second guide rails. Through the cooperation of the first and second guide rails, the first and second connecting components are locked axially. After rotation to the desired position, the radial locking block engages between two adjacent second latches, and the elastic element gradually recovers and pushes the radial locking block to the locked position, thus locking the circumferential degrees of freedom of the first and second connecting components.

[0032] When unlocking the first and second connecting components, pulling the fastener moves the radial locking block towards the first housing, compressing the elastic element and thus completing the circumferential unlocking of the first and second connecting components. Next, rotating the first housing completely displaces the first guide rail from its corresponding second guide rail, achieving axial unlocking of the first and second connecting components. Finally, vertically pulling out the first connecting component releases the coaxial connection, completing the radial unlocking of the first and second connecting components.

[0033] Therefore, the quick docking structure of this application embodiment is more convenient to operate, improves work efficiency, and reduces the difficulty of operation. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 Schematic diagram of the structure of the first connecting component provided in the embodiments of this application Figure 1 ;

[0036] Figure 2 Schematic diagram of the structure of the first connecting component provided in the embodiments of this application Figure 2 ;

[0037] Figure 3 This is a schematic diagram of the structure of the elastic element provided in the embodiments of this application;

[0038] Figure 4 This is a schematic diagram of the structure of the second connecting component provided in an embodiment of this application;

[0039] Figure 5 This is a schematic diagram of the radial card block provided in an embodiment of this application;

[0040] Figure 6 This is a schematic diagram of the quick docking structure provided in the embodiments of this application.

[0041] Icons: 1-First connecting component; 11-First housing; 111-Mounting hole; 12-First latch; 13-First guide rail; 2-Second connecting component; 21-Second housing; 22-Second latch; 221-Second guide rail; 23-Third housing; 3-Radial locking block; 4-Elastic element; 41-First elastic hook; 42-Second elastic hook; 43-Third elastic hook. Detailed Implementation

[0042] 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, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for 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. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0044] This application provides a rapid docking structure, such as Figures 1 to 6As shown, the quick-connect structure includes a first connecting component 1, a second connecting component 2, a radial locking block 3, an elastic element 4, and fasteners. The first connecting component 1 includes a first housing 11, a plurality of first latches 12, and a plurality of first guide rails 13. The plurality of first latches 12 are spaced circumferentially along the top wall of the first housing 11 and form a receiving space with the inner sidewall of the first housing 11. The plurality of first guide rails 13 are spaced along the height direction of their corresponding first latches 12. The second connecting component 2 includes a second housing 21 and a plurality of second latches 22. The plurality of second latches 22 are spaced along the outer wall of the second housing 21 and correspond to the first latches 12. Each second latch 22 includes a plurality of second guide rails 221. The plurality of second guide rails 221 are spaced along the height direction of the second housing 21 and correspond to the first guide rails 13. One end of the fastener passes through the sidewall of the first housing 11 and connects to the radial locking block 3, which is located between adjacent first latches 12. The elastic element 4 is disposed between the outer wall of the radial locking block 3 and the inner wall of the first housing 11. The side of the radial locking block 3 away from the elastic element 4 is inclined downward.

[0045] Furthermore, the second guide rail 221 and the first guide rail 13 of this application have the same length and curvature. The spacing between two adjacent second guide rails 221 is the same as the height of the first guide rail 13, which not only ensures that the overall structure can form a stable connection structure in the radial direction, but also makes this connection mainly provided by the surface pressure between the first guide rail 13 and the second guide rail 221.

[0046] Specifically, the distance between two adjacent first guide rails 13 is set to 4-6 mm. In this application, the main function of the radial locking block 3 is to achieve circumferential locking. Furthermore, the fasteners and elastic elements 4 in this application only serve a limiting function and do not directly participate in the actual load-bearing of the structure. Therefore, the fasteners do not need to be excessively pre-tightened or loosened, and the elastic element 4 can be a common spring with a low stiffness coefficient.

[0047] It should be noted that when locking the first connecting assembly 1 and the second connecting assembly 2, the first latch 12 is vertically inserted between two adjacent second latches 22 until the bottom of the second latches 22, so that the first housing 11 and the second housing 21 form a coaxial connection. At this time, the radial locking block 3 abuts against the outer wall of one of the second latches 22, thereby compressing the elastic element 4. Then, the first housing 11 is rotated so that the first guide rail 13 is inserted between the two adjacent second guide rails 221. Through the cooperation of the first guide rail 13 and the second guide rail 221, the first connecting assembly 1 and the second connecting assembly 2 are locked in the axial direction. After being rotated to the correct position, the radial locking block 3 is engaged between the two adjacent second latches 22, the elastic element 4 gradually recovers and pushes the radial locking block 3 to the locked position, and the circumferential degree of freedom of the first connecting assembly 1 and the second connecting assembly 2 is also locked.

[0048] When the first connecting component 1 and the second connecting component 2 are unlocked, the fastener is pulled, causing the radial locking block 3 to move towards the first housing 11. The elastic element 4 is then compressed, thus completing the circumferential unlocking of the first connecting component 1 and the second connecting component 2. Next, the first housing 11 is rotated, completely dislocating the first guide rail 13 from the corresponding second guide rail 221, achieving axial unlocking of the first connecting component 1 and the second connecting component 2. The first connecting component 1 is then pulled out vertically, thereby releasing the coaxial connection and completing the radial unlocking of the first connecting component 1 and the second connecting component 2.

[0049] Therefore, the quick docking structure of this application embodiment is more convenient to operate, improves work efficiency, and reduces the difficulty of operation.

[0050] In this embodiment, the elastic element 4 includes four first elastic hooks 41, two second elastic hooks 42, and two third elastic hooks 43. The four first elastic hooks 41 are all disposed circumferentially on the side of the radial locking block 3 facing the first housing 11. The two second elastic hooks 42 and the two third elastic hooks 43 are all disposed circumferentially on the side of the first housing 11 facing the radial locking block 3, and correspond to the first elastic hooks 41. The two third elastic hooks 43 are located below the two second elastic hooks 42, and their length is less than the length of the two second elastic hooks 42, so that the radial locking block 3 tilts downwards, improving the stability and reliability of the connection and simplifying the locking and unlocking process.

[0051] It should be noted that the radial locking block 3 is designed to tilt downwards, so that it can easily abut against the side of the second locking tongue 22 away from the second housing 21. As the first housing 11 is further inserted, the radial locking block 3 will gradually move downwards, at which point the second locking tongue 22 will squeeze the radial locking block 3, thereby compressing the elastic element 4.

[0052] In this embodiment, the first housing 11 is provided with a mounting hole 111, and the radial locking block 3 is provided with an internal thread. The fastener is provided with an external thread corresponding to the internal thread. One end of the fastener passes through the mounting hole 111 and is connected to the internal thread.

[0053] In this embodiment, the quick-connect structure further includes a snap-fit ​​rod. The fastener has a snap-fit ​​hole. When it is necessary to circumferentially unlock the first connecting component 1 and the second connecting component 2, the fastener is pulled outwards, causing the elastic element 4 to be in a compressed state. At this time, the snap-fit ​​hole, originally located inside the first housing 11, is exposed outside the first housing 11. The snap-fit ​​rod is then inserted into the snap-fit ​​hole to achieve circumferential unlocking.

[0054] The design of the locking rod and locking hole in this application makes the circumferential unlocking process faster and more convenient. Operators do not need to perform complicated operations or adjustments; they can simply insert the locking rod into the locking hole and operate, saving manpower.

[0055] In this embodiment, there are four first latches 12, which are evenly disposed on the top wall of the first housing 11. There are also four second latches 22, which are evenly disposed on the outer wall of the second housing 21.

[0056] The even distribution of the four first latches 12 and the second latches 22 can make the overall structure more compact and reduce unnecessary space waste.

[0057] In this embodiment of the application, each second latch 22 includes three second guide rails 221. Each first latch 12 is provided with two first guide rails 13.

[0058] In this embodiment, the radial locking block 3 is a hollow structure. The side of the first locking tongue 12 away from the first guide rail 13 is a first opening structure. The side of the second guide rail 221 facing the second housing 21 is a second opening structure.

[0059] It should be noted that the hollow structure, the first opening structure, and the second opening structure significantly reduce the weight of the overall structure, which helps to reduce the amount of material used and thus lower costs.

[0060] In this embodiment, the second connecting component 2 further includes a third housing 23. The third housing 23 is disposed at the bottom of the second housing 21, and its outer diameter is larger than that of the second housing 21. The outer diameter of the first housing 11 is equal to the outer diameter of the third housing 23.

[0061] It should be noted that since the outer diameter of the first housing 11 is equal to the outer diameter of the third housing 23, when the first housing 11 is inserted into place, its bottom will naturally abut against the top of the third housing 23, providing a physical indication of insertion. In the locked state, the first housing 11, the second housing 21, and the third housing 23 together form a stable integral structure. This structure can effectively resist adverse factors such as external pressure and vibration, ensuring the stability and reliability of the connection components.

[0062] This application provides a design method for a lightweight quick-connection structure. Based on the above-mentioned quick-connection structure, the design method includes the following steps:

[0063] S1: Determine the required design load and overall structural envelope dimensions based on the usage environment and functional requirements of the quick-connect structure.

[0064] S2: Based on the design load determined in S1, determine the dimensional parameters of the first connecting component 1, the second connecting component 2, and the radial locking block 3; wherein, the dimensional parameters include the inner radius, outer radius, central angle, and height of the first latch 12, the first guide rail 13, the second guide rail 221, and the radial locking block 3. The inner and outer radii of the first latch 12, the first guide rail 13, the second guide rail 221, and the radial locking block 3 can be determined according to the assembly relationship of the first connecting component 1 and the second connecting component 2; the central angle and height of the first latch 12, the first guide rail 13, and the second guide rail 221 need to be designed based on mechanical analysis;

[0065] like Figure 6 As shown, each first latch 12 is provided with two first guide rails 13, and there are three corresponding second guide rails 221. Therefore, the axial load of this quick-connect structure is mainly borne by the pressing contact between the first guide rails 13 and the second guide rails 221. Each latch 12 has a total of eight contact surfaces, with each contact surface bearing the same load. Therefore, the formula for calculating the central angle of the first latch 12, the first guide rails 13, and the second guide rails 221 is as follows:

[0066]

[0067] Where θ is the central angle of the first latch 12, the first guide rail 13, and the second guide rail 221, and p max To determine the maximum axial load that the quick-connect structure can withstand in the working environment, R and r are the outer and inner radii of the first guide rail 13, the second guide rail 221, and the first latch 12, respectively. [σ x [The allowable tensile stress is defined as the first latch 12, the first guide rail 13, and the second guide rail 221.]

[0068] The formula for calculating the central angle of this application can calculate the minimum angle of the central angle of the first latch 12, the first guide rail 13, and the second guide rail 221.

[0069] It should be noted that the central angles of the first latch 12, the first guide rail 13, and the second guide rail 221 are determined based on the axial tensile strength check of the overall quick docking structure.

[0070] The heights of the first guide rail 13 and the second guide rail 221 are determined by the maximum bending moment section strength check.

[0071] The formulas for calculating the height of the first guide rail 13 and the second guide rail 221 are as follows:

[0072]

[0073] Where h is the height of the first guide rail 13 and the second guide rail 221, R and r are the outer and inner radii of the first guide rail 13 and the second guide rail 221, respectively, θ is the central angle of the first guide rail 13 and the second guide rail 221, q is the uniformly distributed load acting on the first guide rail 13 and the second guide rail 221, [σ y ] represents the allowable bending moment stress of the first guide rail 13 and the second guide rail 221.

[0074] This application can calculate the minimum height of the first guide rail 13 and the second guide rail 221.

[0075] The height of the first latch 12 is calculated based on the assembly relationship between the first guide rail 13, the second guide rail 221, the first housing 11, and the second housing 21; the radial latch 3 only serves as a circumferential locking mechanism and does not participate in actual load bearing, and its dimensions are calculated based on the first latch 12, the first housing 11, the second latch 22, and the second housing 21.

[0076] S3: The first latch 12, the first guide rail 13, the second guide rail 221 and the radial latch 3 are lattice-processed, and the size of the lattice rod is determined by its stiffness and strength criteria;

[0077] Stiffness is mainly determined by the material's elastic modulus and cross-sectional dimensions, while strength is mainly determined by the material and cross-sectional dimensions. The dimensions of the member are determined by the given maximum deformation and yield strength interface.

[0078] The stiffness criterion ensures that the deformation of the structure is within an acceptable range, while the strength criterion ensures that the members will not yield or break under stress.

[0079] The formula for calculating the dimensions of lattice members is as follows:

[0080]

[0081] Where, r design For the dimensions of the lattice member, [σ] x [ ] represents the allowable stress of the lattice member; F represents the axial load of the lattice member; ΔL max L represents the maximum deformation of the lattice member; E represents the length of the lattice member; and E represents the elastic modulus of the material.

[0082] Lattice processing is an effective weight-reduction method that reduces material usage while maintaining structural integrity, thus achieving lightweight docking structures. This method not only reduces weight but also helps improve the structure's heat dissipation and fatigue resistance.

[0083] This application utilizes the Lattice optimization module in the OptiStruct software to complete the lattice structure filling. Unlike classic lattice optimization methods, this application employs a unique optimization parameter setting mode. This mode ensures that the optimization process creates the lattice structure solely based on the boundaries of the finite element mesh, thereby constructing the lattice space within the entire lattice filling domain. The node information of this lattice space depends entirely on the solid element nodes in the solid optimization. Under the same coordinate system, this lattice space maintains a good spatial logical relationship with the previously obtained solid model, the outer shell model, and the non-design domain. Furthermore, since this application only uses the initial calculation results of the Lattice optimization, its computational load is significantly reduced compared to the classic lattice optimization method that uses the entire Lattice optimization iteration process. The specific parameter settings are as follows:

[0084] Optimization constraints: Quality constraints, which ensure that the optimized lattice structure meets quality requirements.

[0085] Lattice fill threshold: Set the pseudo density to be no less than -1.

[0086] Lattice rod diameter: To facilitate processing, use a uniform lattice rod diameter as much as possible.

[0087] Iteration limit: set to 1, meaning only one iteration operation is performed.

[0088] S4: Based on the processed structural dimensions and shape in S3, generate an STL model that can be directly used for additive manufacturing, and simultaneously generate an envelope shell model corresponding to the STL model. Superimpose and combine the STL model and the envelope shell model to ensure the matching of the two in terms of position and size, and obtain a combined model.

[0089] By superimposing and combining the STL model with the envelope shell model, the matching of the STL model and the envelope shell model in terms of position and size is ensured, thereby improving the manufacturing accuracy and reliability.

[0090] S5: Perform corresponding post-processing editing on the combined model to obtain the post-processed model.

[0091] S6: Export the post-processed model as an STL format file for additive manufacturing.

[0092] It should be noted that since the FEM (Finite Element Model) and STL (Standard Template Library) models are interdependent throughout the process, the STL model can be directly exported from the FEM model. Specifically, we import the raster FEM model into Materialise3-matic software for further printing process optimization, which generates an STL model that can be directly used for printing.

[0093] After generating the STL model, we need to combine it with the corresponding envelope model. This combination process is achieved through spatial superposition in the same coordinate system, without the need for additional assembly or Boolean operations. After performing appropriate post-processing editing on the superimposed and combined model, it can be exported as an STL model for additive manufacturing.

[0094] In this embodiment of the application, during S4, when generating the STL model, the installation position and shape of the elastic element 4 and the fastener are determined.

[0095] Furthermore, compared to the sequential design mode in the classic lattice-solid optimization design method (i.e., model preprocessing is performed in CAD, followed by topology optimization and lattice filling in CAE, then back to CAD for reconstruction design, then verification analysis in CAE, and finally possibly iterative design in CAD), the design method proposed in this application adopts an innovative parallel design mode. In this mode, we simultaneously build FEM models for topology optimization and lattice design, as well as STL models for additive manufacturing, in both CAE and CAD software.

[0096] Throughout the optimization process, the FEM model and the STL model are fully compatible, meaning we don't need to repeatedly build the model. At each key stage of the process, when we obtain one FEM model or STL model, its corresponding counterpart is also obtained simultaneously, without any additional conversion or waiting time.

[0097] Furthermore, during the reconstruction and iterative design process, we only need to change the geometric features in the CAD software or adjust the corresponding finite element mesh in the CAE software, and the change in one of them will be automatically reflected in the other model. This design approach significantly improves design efficiency and reduces the possibility of human error.

[0098] Ultimately, the verification analysis model is a natural continuation of the optimization model, allowing us to perform subsequent verification and analysis without rebuilding the model. This parallel design pattern not only simplifies the design process but also improves the accuracy and reliability of the design.

[0099] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0100] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A quick-connection structure, characterized in that, It includes a first connecting component (1), a second connecting component (2), a radial locking block (3), an elastic element (4), and fasteners; The first connecting assembly (1) includes a first housing (11), a plurality of first latches (12) and a plurality of first guide rails (13); Multiple first latches (12) are arranged circumferentially along the top wall of the first housing (11) and form a receiving space with the inner sidewall of the first housing (11); Multiple first guide rails (13) are spaced apart along the height direction of their corresponding first latches (12); The second connecting assembly (2) includes a second housing (21) and a plurality of second latches (22); Multiple second latches (22) are spaced apart along the outer wall of the second housing (21) and correspond to the first latches (12); The second latch (22) includes a plurality of second guide rails (221); Multiple second guide rails (221) are spaced apart along the height direction of the second housing (21) and correspond to the first guide rail (13); One end of the fastener passes through the side wall of the first housing (11) and is connected to the radial latch (3), the radial latch (3) being located between adjacent first latches (12); The elastic element (4) is disposed between the outer wall of the radial block (3) and the inner wall of the first housing (11); The radial locking block (3) is inclined downward on the side away from the elastic member (4); When the first connecting component (1) and the second connecting component (2) are locked, the first latch (12) is inserted between two adjacent second latches (22), and the radial block (3) is pressed against the outer wall of one of the second latches (22), so that the elastic element (4) is in a compressed state; the first housing (11) is rotated so that the first guide rail (13) is inserted between the two adjacent second guide rails (221) corresponding to it. As the radial block (3) gradually moves to the position between the two adjacent second latches (22), the elastic element (4) returns to the initial state and pushes the radial block (3) to the locked position.

2. The quick docking structure according to claim 1, characterized in that, The elastic element (4) includes four first elastic hooks (41), two second elastic hooks (42) and two third elastic hooks (43); The four first elastic hooks (41) are all disposed circumferentially on the side of the radial block (3) facing the first housing (11); The two second elastic hooks (42) and the two third elastic hooks (43) are all disposed on the circumferential side of the first housing (11) facing the radial block (3) and correspond to the first elastic hooks (41); Both of the third elastic hooks (43) are located below the two second elastic hooks (42), and their lengths are both less than the lengths of the two second elastic hooks (42), so that the radial block (3) is tilted downward.

3. The quick docking structure according to claim 1, characterized in that, The first housing (11) is provided with a mounting hole (111), and the radial locking block (3) is provided with an internal thread; The fastener is provided with an external thread corresponding to the internal thread; One end of the fastener passes through the mounting hole (111) and is connected to the internal thread.

4. The quick docking structure according to claim 3, characterized in that, It also includes a snap-fit ​​lever; The fastener is provided with snap-fit ​​holes; When it is necessary to circumferentially unlock the first connecting component (1) and the second connecting component (2), pull the fastener to compress the elastic element (4). At this time, the snap-fit ​​hole, which was originally located inside the first housing (11), is exposed outside the first housing (11). Insert the snap-fit ​​rod into the snap-fit ​​hole to achieve circumferential unlocking.

5. The quick docking structure according to claim 1, characterized in that, There are four first latches (12), and the four first latches (12) are evenly disposed on the top wall of the first housing (11); There are four second latches (22), and the four second latches (22) are evenly arranged on the outer wall of the second housing (21).

6. The quick docking structure according to claim 1, characterized in that, Each of the second latches (22) includes three second guide rails (221); Each of the first latches (12) is provided with two first guide rails (13).

7. The quick docking structure according to claim 1, characterized in that, The radial locking block (3) has a hollow structure; The side of the first latch (12) away from the first guide rail (13) has a first opening structure; The side of the second guide rail (221) facing the second housing (21) has a second opening structure.

8. The quick docking structure according to claim 1, characterized in that, The second connection component (2) also includes a third housing (23); The third housing (23) is disposed at the bottom of the second housing (21), and its outer diameter is larger than that of the second housing (21); The outer diameter of the first housing (11) is equal to the outer diameter of the third housing (23).

9. A design method for a lightweight, rapid docking structure, characterized in that, Based on the rapid docking structure according to any one of claims 1-8, the design method includes: S1: Determine the required design load and overall structural envelope dimensions based on the usage environment and functional requirements of the quick-connect structure; S2: Based on the design load determined in S1, determine the dimensional parameters of the first connecting component (1), the second connecting component (2), and the radial block (3); wherein, the dimensional parameters include the inner radius, outer radius, central angle, and height of the first latch (12), the first guide rail (13), the second guide rail (221), and the radial block (3). The inner and outer radii of the first latch (12), the first guide rail (13), the second guide rail (221), and the radial block (3) can be determined according to the assembly relationship of the first connecting component (1) and the second connecting component (2). The formulas for calculating the central angles of the first latch (12), the first guide rail (13), and the second guide rail (221) are as follows: Where θ is the central angle of the first latch (12), the first guide rail (13), and the second guide rail (221), and p max To represent the maximum axial load that the quick-connect structure can withstand in the working environment, R and r are the outer and inner radii of the first guide rail (13), the second guide rail (221), and the first latch (12), respectively, [σ x The allowable tensile stress of the first latch (12), the first guide rail (13), and the second guide rail (221) is defined as follows: The formulas for calculating the height of the first guide rail (13) and the second guide rail (221) are as follows: Where h is the height of the first guide rail (13) and the second guide rail (221), R and r are the outer and inner radii of the first guide rail (13) and the second guide rail (221), respectively, θ is the central angle of the first guide rail (13) and the second guide rail (221), q is the uniformly distributed load acting on the first guide rail (13) and the second guide rail (221), [σ y [ ] represents the allowable bending moment stress of the first guide rail (13) and the second guide rail (221); S3: The first latch (12), the first guide rail (13), the second guide rail (221) and the radial latch (3) are lattice-processed, and the size of the lattice rod is determined by its stiffness and strength criteria; The formula for calculating the dimensions of lattice members is as follows: Where, r design For the dimensions of the lattice member, [σ] x [ ] represents the allowable stress of the lattice member; F represents the axial load of the lattice member; ΔL max L represents the maximum deformation of the lattice member; E represents the length of the lattice member; and E represents the elastic modulus of the material. S4: Based on the processed structural dimensions and shape in S3, generate an STL model that can be directly used for additive manufacturing, and at the same time generate an envelope shell model corresponding to the STL model. Superimpose and combine the STL model and the envelope shell model to ensure the matching of the two in terms of position and size, and obtain a combined model. S5: Perform corresponding post-processing editing on the combined model to obtain the post-processed model; S6: Export the post-processed model as an STL format file for additive manufacturing.

10. The design method for the lightweight rapid docking structure according to claim 9, characterized in that, In S4, when generating the STL model, the installation positions and shapes of the elastic element (4) and fasteners are determined.

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