Quantitative evaluation method and device for insertion and extraction force of building blocks and medium

Abstract

The invention discloses a quantitative evaluation method and device for building block insertion and extraction force and a medium. The method comprises the steps of obtaining insertion and extraction data when insertion and extraction operation is performed on a target building block; based on the plugging data, a mathematical model is established according to the relation between the plugging force and the stroke; performing quantitative evaluation on the mathematical model and the insertion and extraction data through an insertion and extraction force scoring system to obtain an insertion and extraction force score; wherein the insertion and extraction force scoring system is established according to mechanical characteristics during single insertion and extraction of the building blocks and insertion and extraction of the building blocks according to periods. According to the quantitative evaluation method and device for the insertion and extraction force of the building blocks and the medium, by establishing an insertion and extraction force scoring system, mechanical characteristics in the insertion and extraction process can be converted into specific scores, the relatively abstract concept of the insertion and extraction force is directly subjected to entity quantification, and the problem that the insertion and extraction force of the building blocks is difficult to quantitatively evaluate can be solved; therefore, hand feeling characteristics are provided for performance evaluation of the building blocks.

Description

Technical Field

[0001] The present invention relates to the technical field of product testing, and in particular to a method, device and medium for quantitatively evaluating the insertion and extraction force of building blocks. Background Art

[0002] In many regions, toy products need to meet certain safety and quality standards before they can enter the market. Since the plug-in and pull-out force quantitative evaluation can directly reflect the stability and durability of the building block toy connectors, through the plug-in and pull-out force quantitative evaluation, manufacturers can produce higher quality building block toys and stand out in the fierce market competition. At present, mechanical testers are mainly used to measure the force required for plugging and pulling out building blocks, such as spring dynamometers, tension testers, or special plug-in and pull-out force testers; the tester's fixture is fixed to the plug-in and pull-out part of the building block, and then force is applied for plug-in and pull-out testing. The tester will display and record the plug-in and pull-out force.

[0003] However, existing testing equipment cannot accurately simulate the plugging and unplugging actions of human hands through mechanical testing methods, resulting in the inability to accurately capture the feel characteristics; in addition, the analysis of test data may not be in-depth enough to be converted into a quantitative evaluation that is instructive for product design; in terms of long-term performance evaluation, existing technologies may not fully consider the changes in the plugging and unplugging force of building blocks after repeated use and its impact on user experience; and the current level of industry standardization is insufficient, so the specific impact of material properties and design factors on plugging and unplugging force and feel has not been systematically studied. Summary of the invention

[0004] The present invention provides a method, device and medium for quantitatively evaluating the plugging and pulling force of a building block, so as to solve the problem that it is difficult to quantitatively evaluate the plugging and pulling force of a building block, thereby providing a feel characteristic for the performance evaluation of the building block.

[0005] Get the plug-in and pull-out data when plugging and unplugging the target building block;

[0006] Based on the plugging and unplugging data, a mathematical model is established according to the relationship between the plugging and unplugging force and the stroke;

[0007] The mathematical model and the plugging and unplugging data are quantitatively evaluated through a plugging and unplugging force scoring system to obtain a plugging and unplugging force score; wherein the plugging and unplugging force scoring system is established based on the mechanical properties of a single plugging and unplugging of a building block and plugging and unplugging of a building block in a cycle.

[0008] This application establishes the mathematical relationship between the plugging and unplugging force and the stroke through data analysis, and the resulting mathematical model can accurately describe the mechanical properties during the plugging and unplugging process. The plugging and unplugging force scoring system can provide a quantitative score based on the mathematical model and plugging and unplugging data, which provides a scientific basis for evaluating the plugging and unplugging performance of building blocks; and through model analysis, the plugging and unplugging performance of building blocks under different conditions can be predicted, providing a reference for product design and optimization. The plugging and unplugging force scoring system takes into account the mechanical properties of both single plugging and unplugging and cyclic plugging and unplugging scenarios, making the plugging and unplugging force evaluation results more comprehensive and better reflecting the performance of building blocks in actual use. This evaluation method is based on mechanical data obtained in actual plugging and unplugging operations, such as plugging and unplugging force, stroke, etc., to ensure the accuracy of the evaluation results; and the plugging and unplugging force scoring system provides a standardized method for evaluating the plugging and unplugging performance of building blocks, which helps to establish unified evaluation standards within the industry.

[0009] Compared with the prior art, the present invention can convert the mechanical properties in the plugging and unplugging process into specific scores by establishing an insertion and unplugging force scoring system. In particular, for toys or components that require manual operation, such as building blocks, the relatively abstract concept of insertion and unplugging force can be directly quantified, which can provide users with an intuitive description of the feel characteristics. Therefore, it can solve the problem of difficulty in quantitatively evaluating the insertion and unplugging force of building blocks, thereby providing feel characteristics for performance evaluation of building blocks.

[0010] As a preferred solution, based on the plugging and unplugging data, a mathematical model is established according to the relationship between the plugging and unplugging force and the stroke, specifically:

[0011] The stage from when the edge of the lower building block in the target building block begins to contact with the edge of the upper building block to when the edge of the lower building block fully contacts with the edge of the upper building block and then enters a stage of smooth insertion is defined as the introduction stage;

[0012] The stage in which the matching contact surface of the lower building block and the upper building block in the target building block increases until the building block is fully inserted is defined as an insertion stage;

[0013] The stage from the lower building block and the upper building block being fully inserted to being pulled out is defined as a pulling-out section;

[0014] The stage where the force of the lower building block and the upper building block is negative after the pulling-out stage is completed is defined as a pop-up stage;

[0015] Based on the plugging and unplugging data, the mathematical model is established according to the strokes of the introduction section, the insertion section, the unplugging section and the ejection section.

[0016] This preferred solution divides the plugging and unplugging process into different stages, which can more accurately capture the mechanical changes in each stage, and establish a corresponding model based on the stroke data of each stage, which can more accurately reflect the actual plugging and unplugging force of building blocks and reduce evaluation errors. Based on mathematical models and quantitative evaluation results, it is helpful to establish a unified test standard and evaluation method for the plugging and unplugging force of building blocks, and improve the comparability and consistency of test results.

[0017] As a preferred solution, based on the plugging and unplugging data, the mathematical model is established according to the travel of the introduction section, the insertion section, the extraction section and the ejection section, specifically:

[0018] Based on the plugging and unplugging data, establishing an import model according to the stroke value of the import section;

[0019] Establishing an insertion model according to the stroke end point of the lead-in section and the stroke value of the lead-in section;

[0020] Establishing a pull-out model according to the starting force value of the pull-out section;

[0021] Establishing an ejection model according to the end point of the pull-out section and the end point of the ejection section;

[0022] The mathematical model is composed of the introduction model, the insertion model, the extraction model and the ejection model.

[0023] This preferred solution can objectively quantify the plugging and unplugging force characteristics of building blocks by collecting actual plugging and unplugging data, such as the travel value and force value of the lead-in section, insertion section, unplugging section and ejection section, which solves the problem of traditional evaluation relying on subjective feelings. Based on the quantitative data, a model is established for each stage, which can accurately reflect the changes in the plugging and unplugging force at each stage.

[0024] As a preferred solution, the insertion and extraction force scoring system is established based on the mechanical properties of a single insertion and extraction of a building block and a periodic insertion and extraction of a building block, specifically:

[0025] In the case of a single plug-in and pull-out test on the building blocks, a single plug-in and pull-out scoring system is established according to the introduction section force coefficient when the building blocks are introduced, the plug-in and pull-out force when the building blocks are plugged in and out, and the ejection energy when the building blocks are ejected;

[0026] When the building blocks are subjected to long-term plug-in and pull-out tests, a long-term plug-in and pull-out scoring system is established based on the small-cycle plug-in and pull-out force stability coefficient and the long-cycle limit usage times of the building blocks;

[0027] The plugging and unplugging force scoring system is composed of the building block single plugging and unplugging scoring system and the building block long-term plugging and unplugging scoring system.

[0028] This preferred solution achieves a quantitative evaluation of the single plug-in and pull-out performance of the building blocks based on specific indicators such as the force coefficient of the introduction section, plug-in and pull-out force, and ejection energy. This quantitative method makes the evaluation results more objective and accurate, avoiding the deviation caused by subjective feelings; and the single plug-in and pull-out test can quickly give a scoring result, which is convenient for timely discovery of plug-in and pull-out force problems in a single use of the building blocks. Through indicators such as the short-cycle plug-in and pull-out force stability coefficient and the long-cycle limit number of uses, the plug-in and pull-out force stability of the building blocks during long-term use is evaluated, so that the long-term plug-in and pull-out scoring system not only focuses on the performance of a single plug-in and pull-out, but also on the stability and limit number of long-term use, thereby achieving comprehensive coverage and evaluation of the plug-in and pull-out performance of the building blocks.

[0029] As a preferred solution, the mathematical model and the plugging and unplugging data are quantitatively evaluated by a plugging and unplugging force scoring system to obtain a plugging and unplugging force score, specifically:

[0030] The mathematical model is quantitatively evaluated by the building block single plug-in and pull-out scoring system of the plug-in and pull-out force scoring system to obtain a building block single plug-in and pull-out score;

[0031] Based on the plugging and unplugging data, the long-period limit usage times of the target building block are calculated according to the insertion times and the unplugging times corresponding to the maximum insertion and unplugging force;

[0032] The long-term plug-in and pull-out scoring system of the plug-in and pull-out force scoring system quantitatively evaluates the long-cycle limit usage times and the short-cycle plug-in and pull-out force stability coefficient of the target building block to obtain a long-term plug-in and pull-out score of the building block;

[0033] The plugging and unplugging force score is calculated according to the single plugging and unplugging score of the building block and the long-term plugging and unplugging score of the building block.

[0034] This preferred solution uses a quantitative evaluation method to convert key indicators such as the long-term maximum number of uses and the short-term plug-in force stability coefficient into specific scores. This clear quantitative representation helps users intuitively understand the long-term plug-in performance of building blocks. By combining the single plug-in score and the long-term plug-in score, the plug-in force score can fully cover all aspects of the plug-in performance of building blocks; since the single plug-in score focuses on the immediate performance of each plug-in, and the long-term plug-in score focuses on the stability and durability during long-term use, combining the two can provide a more complete and comprehensive performance evaluation result.

[0035] As a preferred solution, before obtaining the plugging and unplugging data when performing the plugging and unplugging operation on the target building block, the method further includes:

[0036] Clamping the target building block by a lower clamp of a clamp system; wherein the clamp system comprises an upper clamp and a lower clamp, and the target building block is composed of two upper and lower building blocks of the same structure;

[0037] Under the condition of controlling the centering and alignment of the target building block and the upper clamp, the upper clamp is made to clamp the target building block;

[0038] The clamp system is controlled to separate the upper block and the lower block of the target block, and the value of the force sensor and the value of the displacement sensor are cleared.

[0039] In this preferred solution, the design of the upper and lower clamps ensures accurate centering and alignment of the target building block, which helps reduce errors in subsequent operations and improves the accuracy of processing or assembly. After the upper and lower building blocks of the target building block are separated, the values ​​of the force sensor and displacement sensor are cleared, which helps ensure the accuracy and reliability of subsequent measurements.

[0040] The present invention also provides a quantitative evaluation device for the insertion and extraction force of building blocks, comprising a data module, a model module and an evaluation module;

[0041] Wherein, the data module is used to obtain plugging and unplugging data when performing plugging and unplugging operations on the target building block;

[0042] The model module is used to establish a mathematical model based on the plugging and unplugging data according to the relationship between the plugging and unplugging force and the stroke;

[0043] The evaluation module is used to quantitatively evaluate the mathematical model and the plugging and unplugging data through a plugging and unplugging force scoring system to obtain a plugging and unplugging force score; wherein the plugging and unplugging force scoring system is established based on the mechanical properties of a single plugging and unplugging of a building block and when plugging and unplugging the building block in a cycle.

[0044] As a preferred solution, the model module includes an import unit, an insertion unit, a pull-out unit, an ejection unit and a model unit;

[0045] The introduction unit is used to define the stage from when the edge of the lower building block in the target building block begins to contact with the edge of the upper building block to when the edge of the lower building block fully contacts with the edge of the upper building block and then enters a stage of smooth insertion as the introduction section;

[0046] The insertion unit is used to increase the matching contact surface of the lower building block and the upper building block in the target building block until the stage of full insertion is defined as an insertion section;

[0047] The pulling-out unit is used to define the stage from the complete insertion state to the pulling-out state of the lower building block and the upper building block as a pulling-out section;

[0048] The ejection unit is used to define a stage where the force of the lower building block and the upper building block is negative after the pulling-out stage ends as an ejection stage;

[0049] The model unit is used to establish the mathematical model based on the plugging and unplugging data and according to the travel of the introduction section, the insertion section, the extraction section and the ejection section.

[0050] As a preferred solution, the model unit includes an import subunit, an insert subunit, a pull-out subunit, an eject subunit and a model subunit;

[0051] Wherein, the import subunit is used to establish an import model based on the plug-in data and the stroke value of the import segment;

[0052] The insertion subunit is used to establish an insertion model according to the stroke end point of the lead-in segment and the stroke value of the lead-in segment;

[0053] The extraction subunit is used to establish an extraction model according to the starting point force value of the extraction section;

[0054] The ejection subunit is used to establish an ejection model according to the end point of the pull-out section and the end point of the ejection section;

[0055] The model subunit is used to form the mathematical model by the import model, the insertion model, the extraction model and the ejection model.

[0056] As a preferred solution, the evaluation module includes a single unit, a long-term unit and a system unit;

[0057] The single unit is used to establish a single plug-in and pull-out scoring system for building blocks according to the introduction section force coefficient when the building blocks are introduced, the plug-in and pull-out force when the building blocks are plugged in and out, and the ejection energy when the building blocks are ejected, when a single plug-in and pull-out test is performed on the building blocks;

[0058] The long-term unit is used to establish a long-term plug-in and pull-out scoring system for building blocks according to the short-cycle plug-in and pull-out force stability coefficient and the long-cycle limit usage times of the building blocks when the building blocks are subjected to a long-cycle plug-in and pull-out test;

[0059] The system unit is used to form the plugging force scoring system by the building block single plugging and unplugging scoring system and the building block long-term plugging and unplugging scoring system.

[0060] As a preferred solution, the evaluation module includes a first scoring unit, a limit unit, a second scoring unit and a comprehensive scoring unit;

[0061] The first scoring unit is used to quantitatively evaluate the mathematical model through the building block single plug-in and pull-out scoring system of the plug-in and pull-out force scoring system to obtain a building block single plug-in and pull-out score;

[0062] The limit unit is used to calculate the long-period limit usage times of the target building block based on the plugging and unplugging data and the number of insertions and unplugging corresponding to the maximum plugging and unplugging force;

[0063] The second scoring unit is used to quantitatively evaluate the long-cycle limit usage times and the short-cycle plugging and unplugging force stability coefficient of the target building block through the building block long-term plugging and unplugging scoring system of the plugging and unplugging force scoring system to obtain a building block long-term plugging and unplugging score;

[0064] The comprehensive scoring unit is used to calculate the plugging and unplugging force score according to the single plugging and unplugging score of the building block and the long-term plugging and unplugging score of the building block.

[0065] As a preferred solution, before the data module, it also includes a clamping lower clamp unit, an upper clamp unit and a zeroing unit;

[0066] Wherein, the lower clamp unit is used to clamp the target building block through the lower clamp of the clamp system; wherein, the clamp system includes an upper clamp and a lower clamp, and the target building block is composed of two upper and lower building blocks of the same structure;

[0067] The upper clamp unit is used to make the upper clamp clamp the target building block while controlling the centering and alignment of the target building block and the upper clamp;

[0068] The zeroing unit is used to control the fixture system to separate the upper building block and the lower building block of the target building block, and to zero out the value of the force sensor and the value of the displacement sensor.

[0069] The present application also provides a storage medium, on which a computer program is stored. The computer program is called and executed by a computer to implement the quantitative evaluation method for the insertion and extraction force of a building block as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 It is a flow chart of a quantitative evaluation method of a building block insertion and extraction force provided in an embodiment of the present application;

[0071] Figure 2 This is a schematic diagram of a small cycle plugging and unplugging force provided in an embodiment of the present application;

[0072] Figure 3 This is a schematic diagram of the long-cycle plugging and unplugging force provided in an embodiment of the present application;

[0073] Figure 4 is a block insertion and extraction force curve provided by an embodiment of the present application;

[0074] Figure 5 It is a structural schematic diagram of a device for quantitatively evaluating the insertion and extraction force of building blocks provided in an embodiment of the present application. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0076] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "several" means two or more.

[0077] A quantitative evaluation method for the plugging and unplugging force of a building block provided in an embodiment of the present application is mainly used to quantify the plugging and unplugging force of a building block when the plugging and unplugging action of a human hand needs to be simulated, thereby accurately capturing the feel characteristics of plugging and unplugging the building block, and fully considering the changes in the plugging and unplugging force of the building block after repeated use.

[0078] Embodiment 1:

[0079] See also Figure 1 The embodiment of the present application provides a quantitative evaluation method of the plugging and unplugging force of a building block, including S1 to S3, and the specific implementation steps are as follows:

[0080] S1. Obtaining plugging and unplugging data when performing plugging and unplugging operations on a target building block.

[0081] Step S1 of the embodiment of the present application includes S1.1 to S1.4; wherein S1.1 is a process of checking the target building block, S1.2 is a process of preparing for the test, S1.3 is a process of setting the test conditions, and S1.4 is a process of performing a plug-in test on the target building block, specifically:

[0082] S1.1. Perform an appearance inspection on the target building blocks to confirm that the target building blocks have no defects such as glue deficiency, shrinkage marks, flash and scratches, and record the dimensions of the target building blocks; where the target building blocks are composed of two upper and lower building blocks with the same structure, the key dimensions of the lower building block may include ① 8 raised cylinders on the top of the front, height H1 and circumferential edge spacing; the key dimensions of the upper building block may include ① 12 internal ribs on the back, the sum of the heights and the height difference of the bottom surface; ② 3 back cylinders, outer diameter.

[0083] S1.2. Confirm that the upper and lower blocks of the target block are in the inserted state, and the upper and lower clamps of the clamp system are in the open state and maintain a suitable distance to facilitate the insertion of the target block.

[0084] Control the fixture system to hold the target building block for test preparation, specifically:

[0085] ① Clamp the target building block by the lower clamp of the clamp system, and the clamping force should ensure that the target building block is neither loosened nor damaged; wherein the clamp system includes an upper clamp and a lower clamp.

[0086] ② While controlling the centering and alignment of the target building block and the upper fixture, make the side wall of the target building block approach the upper fixture.

[0087] ③ Make the upper clamp clamp the target building block and lock the upper clamp, control the clamping force to ensure that the target building block is neither loosened nor damaged.

[0088] ④Open the lower clamp and control it to slowly descend by about 0.5mm to separate the target building block from the bottom of the clamp.

[0089] ⑤ Lock the lower clamp with a clamping force that ensures that the target building block is neither loosened nor damaged.

[0090] ⑥ Control the lower fixture to descend 2mm to completely separate the upper and lower blocks in the target block being measured.

[0091] ⑦ Clear the value of the force sensor and the value of the displacement sensor.

[0092] In this embodiment S1.2, the design of the upper and lower clamps ensures accurate centering and alignment of the target building block, which helps to reduce errors in subsequent operations and improve the accuracy of processing or assembly. And after the upper and lower building blocks of the target building block are separated, the values ​​of the force sensor and displacement sensor are cleared, which helps to ensure the accuracy and reliability of subsequent measurements.

[0093] S1.3. Determine the starting point of the travel of the target block by determining the initial position or the force value zero point. Also, when performing continuous plugging and unplugging tests, since the position of the target block or fixture may change slightly after each plugging and unplugging due to factors such as wear and vibration, it is necessary to additionally set the function of detecting the starting point each time. The travel refers to the test displacement of the target block during the insertion and separation process, and this value is consistent with the height H1 of the target block.

[0094] The initial position determination method refers to defining the starting point of the travel by relying on the initial position of the target building block or fixture. That is, assuming that before the test begins, the fixture system is already accurately located at the predetermined initial position, and this position is the starting point of the travel of the target building block;

[0095] Furthermore, the force zero point determination method is to rely on the signal of the force sensor to determine the stroke starting point. That is, when the force sensor detects a non-zero value signal, it is considered that a stable contact state has been reached at this time, and this point can be defined as the stroke starting point of the target building block.

[0096] In this embodiment S1.3, the method of determining the initial position is direct and effective, but may be affected by factors such as mechanical accuracy and assembly errors, resulting in a certain deviation in the initial position; the method of determining the zero point of force value focuses on the actual contact state rather than the preset initial position, so this method can automatically eliminate the test error caused by the initial position deviation.

[0097] S1.4, control the insertion and extraction speed to 10-100 mm / s, preferably 30 mm / s, to simulate the insertion and extraction of the target building blocks by hand;

[0098] For continuous multiple plug-in and pull-out force tests, in order to eliminate the influence of frictional heat and considering the actual use process of the building blocks, it is preferred to control the time interval between each plug-in and plug-out of the building blocks to 2s; one cycle test includes one insertion and one pull-out process. For collectible building blocks, they are usually not repeatedly disassembled after assembly, so long-term cyclic plug-in and pull-out force tests are not required. For general-purpose building blocks, they will experience repeated disassembly and insertion during use. The number of test cycles can be designed according to the actual use scenario, and the number of tests can be set to 50 to 10,000 times;

[0099] According to the force sensor and the displacement sensor, the plugging and unplugging data of the target building block are obtained when performing a single plugging and unplugging test and a multiple-cycle plugging and unplugging test; among which, the single plugging and unplugging test refers to a complete cycle of inserting and then unplugging, and the multiple-cycle plugging and unplugging test refers to continuous plugging and unplugging cycles according to a preset cycle period.

[0100] Among them, the multiple cycle plug-in and pull-out test includes a short cycle test and a long cycle test, specifically:

[0101] (1) Small cycle test (cycle cycle within 200 times)

[0102] Maximum insertion force F that can be extracted per cycle i max and maximum extraction force F r max , plotting the number of plugging and unplugging cycles as the horizontal axis to obtain the curve of the insertion force and the extraction force changing with the increase of the number of plugging and unplugging cycles N.

[0103] To apply the embodiments of this application, please refer to Figure 2 , Figure 2 is a schematic diagram of the short-cycle plugging and unplugging force provided in the embodiment of the present application, indicating that during the short-cycle test, as the number of plugging and unplugging increases, the plugging and unplugging force will gradually change, thereby fitting the obtained linear regression curve; Figure 2 The figure shows the variation curve of insertion force and extraction force after 80 insertion and extraction cycles. Figure 2 Taking 80 times as an example, the number of insertion and extraction force tests can be set according to the design and use cycle of the building blocks, such as 100 times, 200 times or more;

[0104] In addition, the linear regression curve is in the form of F max =An+B; A reflects the plug-in and pull-out performance stability of the building block (including factors affecting materials and structure). The smaller the A value, the smaller the change in plug-in and pull-out force with the increase in the number of plug-in and pull-out times n, and the more stable the plug-in and pull-out feel of the building block; B reflects the size of the initial plug-in and pull-out force of the building block. The larger the B value, the greater the initial plug-in and pull-out force. For example, for two building blocks with the same B value, their A values ​​are 0.02 and 0.05 respectively, the former is considered to have better feel stability.

[0105] To apply the embodiments of the present application, please refer to Table 1, which is a stability coefficient comparison table provided in the embodiments of the present application, indicating the changes in the stability coefficient and initial force value when the building block sample is inserted and pulled out.

[0106] Table 1 Stability coefficient comparison table

[0107] process Stability factor A / N Initial force value B / N Insert 0.0385 12.979 Remove 0.034 15.365 Mean 0.03625 14.172

[0108] (2) Long cycle test (cycle period greater than 200 cycles)

[0109] Long-term cycle test is used to characterize the service life of building blocks, with the maximum insertion force corresponding to the number of insertions N i and the number of extractions N r The average value N peek Characterizes the maximum number of plugging and unplugging times that a building block can maintain a normal feel, and the number of times used is greater than the average value N peek The plugging and unplugging force of the building block begins to decay continuously, which may cause the building block to disintegrate due to insufficient plugging and unplugging force; the average value N peek Characterizes the durability of building blocks. The larger the value, the better the durability of the building blocks.

[0110] To apply the embodiments of this application, please refer to Figure 3 , Figure 3 is a schematic diagram of the long-cycle plugging and unplugging force provided in an embodiment of the present application, indicating that during a long-cycle cycle test, as the number of plugging and unplugging increases, the plugging and unplugging force will gradually change, thereby fitting a linear regression curve;

[0111] To apply the embodiments of the present application, please refer to Tables 2 to 3; Table 2 is a table of limit times provided in the embodiments of the present application, which shows the experimental data obtained by testing the plugging and unplugging force cycles of the building block samples for 10,000 times; Table 3 is a table of evaluation indexes provided in the embodiments of the present application, which shows that according to the analysis results of Tables 1 to 2, the output includes A, B and N peek Long-term feel evaluation index of building blocks including;

[0112] As shown in Table 2, the insertion force of the building block sample can be maintained for 1700 times without attenuation, and the extraction force can be maintained for 1650 times without attenuation. The average number of cycles without attenuation is N. peek It is 1675 times.

[0113] Table 2 Limit times comparison table

[0114] process Limit number N Insert 1700 Remove 1650 Mean 1675

[0115] Table 3 Evaluation index comparison table

[0116]

[0117] S2. Based on the plugging and unplugging data, a mathematical model is established according to the relationship between the plugging and unplugging force and the stroke.

[0118] Step S2 of the embodiment of the present application includes S2.1 to S2.2; wherein S2.1 is a process of defining different stages of the test, and S2.2 is a process of establishing a mathematical model, specifically:

[0119] S2.1, the stage from when the rounded edge of the top surface of the lower block in the target block begins to contact the edge of the rib position of the upper block to when the rounded edge of the top surface of the lower block fully contacts the edge of the rib position of the upper block and enters the stage of smooth insertion is defined as the lead-in stage;

[0120] The mating contact surface of the lower block and the upper block in the target block is increased, and the force value is gradually increased with the stroke until the stage when the lower block and the upper block are fully inserted is defined as the insertion stage;

[0121] The stage from the lower block and the upper block being fully inserted to being pulled out is defined as the pull-out stage;

[0122] The stage in which the force on the lower block and the upper block is negative after the pull-out stage is completed is defined as the ejection stage.

[0123] In this embodiment S2.1, the plugging and unplugging process is subdivided into different stages, which can more accurately capture the mechanical changes in each stage.

[0124] S2.2. Based on the single plug-in test data in the plug-in data, establish the import model F according to the stroke value L of the import section 导入 ;

[0125] According to the end point L1 of the lead-in segment and the lead-in segment stroke value L, establish the insertion model F 插入 ;

[0126] According to the starting force value F of the pull-out section r max Build the pull-out model F 拔出 ;

[0127] The absolute value of the peak value of the ejection force in the ejection section F o max The ejection force expression F is defined as 弹出 According to the end point L3 of the pull-out section and the end point L4 of the pop-up section, establish the pop-up release expression E 弹出 ; From the ejection force expression F 弹出 and the pop-up release expression E 弹出 Composition pop-up model Y 弹出 ; Among them, the pop-up release expression E 弹出 It can represent the force of the building block popping out. The larger this value is, the better the automatic separation effect of the building block popping out is, which can provide users with a better pulling out experience.

[0128] By importing model F 导入 , insert model F 插入 , pull out model F 拔出 and pop-up model Y 弹出 Construct a mathematical model.

[0129] The imported model is:

[0130] F 导入 =aL

[0131] Insert the model as:

[0132] F 插入 =aL1+b(L-L1) n

[0133] The pull-out model is:

[0134] F 拔出 =F r max

[0135] The popup model is:

[0136] F 弹出 =F o max ;

[0137] E 弹出 =F 弹出 *L 弹出

[0138] Among them, for the insertion model, a is the force value coefficient of the insertion section; L is the stroke value of the insertion section, where 0 < L < L1, and L1 is the end point of the insertion section stroke;

[0139] For the insertion model, b is the force value coefficient of the insertion section, and n is the force value exponent; L is the stroke value of the insertion section, where L1 < L < L2, L1 is the end point of the insertion section stroke, and L2 is the end point of the insertion section stroke;

[0140] For the extraction model, F r max is the starting force value, that is, the maximum value of the extraction force; since the end point of the extraction section is marked by a force value of 0, the starting force value of this section is the maximum value of the extraction force;

[0141] For the ejection model, F o max is the absolute value of the peak ejection force; L 弹出 is the ejection stroke value, equal to the end point L4 of the ejection section minus the end point L3 of the extraction section, that is, L 弹出 = L4 - L3.

[0142] For the implementation of this application example, please refer to Figure 4 , Figure 4 is the insertion and extraction force curve graph provided by the application example of this application, representing the curve of the output force value changing with the stroke during a single plugging and unplugging test of the building block sample. As Figure 4 shown, this is the curve data obtained by testing with the material of Kingfa Technology HP-126G001. It can be seen that the force value curve of a complete plugging and unplugging cycle is divided into 4 segments, namely the insertion section, the insertion section, the extraction section, and the ejection section;

[0143] For the insertion section, the stroke of this section is related to the rib position and rounded corner design of the building block. It can be seen from the force value curve that there is an obvious slope change; the relationship between the insertion force value and the stroke of the insertion section obtained by fitting is F 导入 = 29.233L, 0 < L < L1 = 0.216;

[0144] For the insertion section, the relationship between the force value and the stroke of the insertion section of this material obtained by fitting is F 插入

[0145] = 29.233L + 5.769(L - L1) 1.647 , 0.216 < L < L2 = 1.431; and the end point of this section is the point with the maximum insertion force value, F i max = 13.436N;

[0146] For the extraction section, the starting force value F r max = 16.031N;

[0147] For the ejection section, the peak absolute value of the ejection force F 弹出 =1.175N; the area enclosed by the ejection curve and the X-axis is approximately a triangle, and its area represents the energy released by the ejection E 弹出 =F 弹出 *L 弹出 =0.3mJ.

[0148] To apply the embodiments of the present application, please refer to Table 4, which is a plug-in parameter comparison table provided in the embodiments of the present application, indicating the parameter fitting results obtained by testing the HP-126G001 material of Kingfa Science & Technology. In addition, a single plug-in test can obtain the parameters in the table through the original data and the fitting results to evaluate the plug-in force of the building block.

[0149] Table 4 Plug and unplug parameter comparison table

[0150]

[0151] This embodiment S2.2 can objectively quantify the plugging and unplugging force characteristics of the building blocks by collecting actual plugging and unplugging data, such as the travel value and force value of the lead-in section, the insertion section, the unplugging section, and the ejection section, which solves the problem of traditional evaluation relying on subjective feelings. Based on the quantitative data, a model is established for each stage, which can accurately reflect the changes in the plugging and unplugging force at each stage.

[0152] S3. The mathematical model and the plugging and unplugging data are quantitatively evaluated through the plugging and unplugging force scoring system to obtain the plugging and unplugging force score; wherein the plugging and unplugging force scoring system is established based on the mechanical properties of the building blocks during single plugging and unplugging and during plugging and unplugging of the building blocks in a cycle.

[0153] Step S3 of the embodiment of the present application includes S3.1 to S3.2; wherein S3.1 is the process of establishing a plugging force scoring system, and S3.2 is the process of quantitatively evaluating the mathematical model and plugging data through the plugging force scoring system to obtain a plugging force score, specifically:

[0154] S3.1. In the case of a single plug-in and pull-out test on the building blocks, a single plug-in and pull-out scoring system (STS) is established according to the lead-in force coefficient when the building blocks are introduced, the plug-in and pull-out force when the building blocks are plugged in and out, and the ejection energy when the building blocks are ejected;

[0155] When the building blocks are subjected to long-term plug-in and pull-out tests, a long-term plug-in and pull-out scoring system (LTS) is established based on the small-cycle plug-in and pull-out force stability coefficient and the long-cycle limit usage times of the building blocks.

[0156] The plugging force scoring system TS-S / L is composed of the single plugging and unplugging scoring system STS and the long-term plugging and unplugging scoring system LTS.

[0157] To apply the embodiments of the present application, please refer to Table 5, which is a visualization comparison table of the building block single plug-in scoring system provided by the embodiments of the present application, indicating the visualization results of the parameter scoring of the relevant mathematical model at different stages using the building block single plug-in scoring system STS, and the corresponding values ​​of the building block samples obtained by testing the HP-126G001 material of Kingfa Technology;

[0158] In addition, the building block single plug-in and pull-out scoring system STS uses the feel score STS-"Short-term Tactile Score" as the symbol of the single plug-in and pull-out feel of the building block, and its score ranges from 0 to 5.

[0159] Table 5 Visual comparison table of single plug-in and plug-out scoring system for building blocks

[0160]

[0161]

[0162] To apply the embodiments of the present application, please refer to Table 6, which is a visualization comparison table of the long-term plug-in scoring system for building blocks provided in the embodiments of the present application, indicating the visualization results of parameter scoring for different cycles using the long-term plug-in scoring system for building blocks LTS, as well as the corresponding values ​​of the building block samples in Table 3;

[0163] In addition, the long-term tactile score system LTS uses the long-term tactile score LTS-"Long-term TactileScore" as the symbol of the plug-in feel of the building blocks, and its score ranges from 0 to 5.

[0164] Table 6 Visual comparison table of long-term plug-in and plug-out scoring system for building blocks

[0165]

[0166]

[0167] This embodiment S3.1 realizes the quantitative evaluation of the single plug-in and pull-out performance of the building block based on specific indicators such as the force coefficient of the lead-in section, the plug-in and pull-out force, and the ejection energy. This quantitative method makes the evaluation result more objective and accurate, avoiding the deviation caused by subjective feelings; and the single plug-in and pull-out test can quickly give the scoring result, which is convenient for timely discovery of the plug-in and pull-out force problems of the building block in a single use. Through indicators such as the short-cycle plug-in and pull-out force stability coefficient and the long-cycle limit use times, the plug-in and pull-out force stability of the building block in the long-term use process is evaluated, so that the long-term plug-in and pull-out scoring system not only focuses on the performance of a single plug-in and pull-out, but also focuses on the stability and limit times of long-term use, thereby achieving comprehensive coverage and evaluation of the plug-in and pull-out performance of the building block.

[0168] S3.2, quantitatively evaluate the mathematical model through the building block single plug-in and pull-out scoring system STS of the plug-in and pull-out force scoring system TS-S / L to obtain the building block single plug-in and pull-out score;

[0169] Based on the multiple cycles of plug-in and pull-out test data in the plug-in and pull-out data, the long-term limit usage times N of the target building block are calculated according to the number of insertions and pull-outs corresponding to the maximum plug-in and pull-out force. peek ;

[0170] The long-term plugging and unplugging scoring system LTS is used to measure the long-term maximum number of uses N through the plugging and unplugging force scoring system TS-S / L. peek The short-cycle plug-in and pull-out force stability coefficient of the target building block is quantitatively evaluated to obtain the long-term plug-in and pull-out score of the building block;

[0171] The plugging and unplugging force score is calculated by summing up the single plugging and unplugging score of the building block and the long-term plugging and unplugging score of the building block.

[0172] This embodiment S3.2 adopts a quantitative evaluation method to convert key indicators such as the long-term maximum number of uses and the short-term plug-in force stability coefficient into specific scores. This clear quantitative representation method helps users intuitively understand the long-term plug-in performance of the building block. By combining the single plug-in score and the long-term plug-in score, the plug-in force score can fully cover all aspects of the plug-in performance of the building block; because the single plug-in score focuses on the immediate performance of each plug-in, and the long-term plug-in score focuses on the stability and durability during long-term use, combining the two can provide a more complete and comprehensive performance evaluation result.

[0173] Overall, this embodiment has the following beneficial effects:

[0174] This application establishes the mathematical relationship between the plugging and unplugging force and the stroke through data analysis, and the resulting mathematical model can accurately describe the mechanical properties during the plugging and unplugging process. The plugging and unplugging force scoring system can provide a quantitative score based on the mathematical model and plugging and unplugging data, which provides a scientific basis for evaluating the plugging and unplugging performance of building blocks; and through model analysis, the plugging and unplugging performance of building blocks under different conditions can be predicted, providing a reference for product design and optimization. The plugging and unplugging force scoring system takes into account the mechanical properties of both single plugging and unplugging and cyclic plugging and unplugging scenarios, making the plugging and unplugging force evaluation results more comprehensive and better reflecting the performance of building blocks in actual use. This evaluation method is based on mechanical data obtained in actual plugging and unplugging operations, such as plugging and unplugging force, stroke, etc., to ensure the accuracy of the evaluation results; and the plugging and unplugging force scoring system provides a standardized method for evaluating the plugging and unplugging performance of building blocks, which helps to establish unified evaluation standards within the industry.

[0175] In addition, the present application improves the accuracy and reliability of test data by using high-precision sensors and customized fixtures. Example 1 covers the entire process from sample preparation to long-term performance evaluation, providing a comprehensive testing solution. By establishing a mathematical model and a scoring system, the test results are converted into quantitative indicators that are easy to understand and operate, so that the proposed test method and scoring system are innovative in the industry and can provide new perspectives and solutions. The resulting test scheme and scoring system can be directly applied to actual product development and quality control, and have high practical value. Therefore, the present application can be applied to building block toys of different types and sizes, and has good versatility and extensibility.

[0176] Embodiment 2:

[0177] See also Figure 5 , an embodiment of the present application provides a quantitative evaluation device for plugging and pulling force of building blocks, including a data module 10, a model module 20 and an evaluation module 30;

[0178] The data module 10 is used to obtain the plugging and unplugging data when the target building block is plugged and unplugged;

[0179] A model module 20 is used to establish a mathematical model based on the plugging and unplugging data and the relationship between the plugging and unplugging force and the stroke;

[0180] The evaluation module 30 is used to quantitatively evaluate the mathematical model and the plugging and unplugging data through a plugging and unplugging force scoring system to obtain a plugging and unplugging force score; wherein the plugging and unplugging force scoring system is established based on the mechanical properties of the building blocks during single plugging and unplugging and during plugging and unplugging of the building blocks in a cycle.

[0181] In one embodiment, the data module 10 includes an inspection unit, a preparation unit, a setting unit and a test unit; wherein the inspection unit is a process of inspecting the target building block, the preparation unit is a process of preparing for the test, the setting unit is a process of setting the test conditions, and the test unit is a process of performing a plug-in test on the target building block, specifically:

[0182] The inspection unit is used to perform an appearance inspection on the target building block, confirm that the target building block has no defects such as glue deficiency, shrinkage marks, flash and scratches, and record the size of the target building block; wherein, the target building block is composed of two upper and lower building blocks of the same structure, and the key dimensions of the lower building block may include ① 8 raised cylinders on the top of the front side, height H1 and circumferential edge spacing; the key dimensions of the upper building block may include ① 12 internal ribs on the back side, the sum of the heights and the height difference of the bottom surface; ② 3 back cylinders, outer diameter.

[0183] The preparation unit is used to confirm that the upper and lower blocks of the target building block are in an inserted state, and the upper and lower clamps of the clamp system are in an open state and maintain a suitable distance to allow the target building block to be placed.

[0184] The preparation unit is also used to control the fixture system to clamp the target building block for test preparation, specifically:

[0185] ① Clamp the target building block by the lower clamp of the clamp system, and the clamping force should ensure that the target building block is neither loosened nor damaged; wherein the clamp system includes an upper clamp and a lower clamp.

[0186] ② While controlling the centering and alignment of the target building block and the upper fixture, make the side wall of the target building block approach the upper fixture.

[0187] ③ Make the upper clamp clamp the target building block and lock the upper clamp, control the clamping force to ensure that the target building block is neither loosened nor damaged.

[0188] ④Open the lower clamp and control it to slowly descend by about 0.5mm to separate the target building block from the bottom of the clamp.

[0189] ⑤ Lock the lower clamp with a clamping force that ensures that the target building block is neither loosened nor damaged.

[0190] ⑥ Control the lower fixture to descend 2mm to completely separate the upper and lower blocks in the target block being measured.

[0191] ⑦ Clear the value of the force sensor and the value of the displacement sensor.

[0192] In the preparation unit of this embodiment, the design of the upper and lower clamps ensures accurate centering and alignment of the target building block, which helps to reduce errors in subsequent operations and improve the accuracy of processing or assembly. And after the upper and lower building blocks of the target building block are separated, the values ​​of the force sensor and displacement sensor are cleared, which helps to ensure the accuracy and reliability of subsequent measurements.

[0193] The setting unit is used to determine the starting point of the travel of the target building block by means of initial position determination or force value zero point determination; and, when performing continuous plugging and unplugging tests, since the position of the target building block or the fixture may change slightly after each plugging and unplugging due to factors such as wear and vibration, it is necessary to additionally set the function of detecting the starting point each time; wherein, the travel refers to the test displacement of the target building block during the insertion and separation process, and this value is consistent with the height H1 of the target building block;

[0194] The initial position determination method refers to defining the starting point of the travel by relying on the initial position of the target building block or fixture. That is, assuming that before the test begins, the fixture system is already accurately located at the predetermined initial position, and this position is the starting point of the travel of the target building block;

[0195] Furthermore, the force zero point determination method is to rely on the signal of the force sensor to determine the stroke starting point. That is, when the force sensor detects a non-zero value signal, it is considered that a stable contact state has been reached at this time, and this point can be defined as the stroke starting point of the target building block.

[0196] In the setting unit of this embodiment, the method of initial position determination is direct and effective, but it may be affected by factors such as mechanical accuracy and assembly errors, resulting in a certain deviation in the initial position; the method of force zero point determination focuses on the actual contact state rather than the preset initial position, so this method can automatically eliminate the test error caused by the initial position deviation.

[0197] The test unit is used to control the insertion and extraction speed to 10-100 mm / s, preferably 30 mm / s, to simulate the insertion and extraction of the target building blocks by human hands;

[0198] The test unit is also used for continuous multiple plug-in and pull-out force tests. In order to eliminate the influence of frictional heat and take into account the actual use process of the building blocks, it is preferred to control the time interval between each plug-in and plug-out of the building blocks to 2s; one cycle test includes one insertion and one pull-out process. For collectible building blocks, they are usually not repeatedly disassembled after assembly, so long-term cyclic plug-in and pull-out force tests are not required. For general-purpose building blocks, they will experience repeated disassembly, assembly, and plug-in during use. The number of test cycles can be designed according to the actual use scenario, and the number of tests can be set to 50 to 10,000 times.

[0199] The test unit is also used to obtain the plugging and unplugging data of the target building block during a single plugging and unplugging test and multiple-cycle plugging and unplugging test based on the force sensor and the displacement sensor; wherein the single plugging and unplugging test refers to a complete cycle of inserting and then unplugging, and the multiple-cycle plugging and unplugging test refers to continuous plugging and unplugging cycles according to a preset cycle period.

[0200] Among them, the multiple cycle plug-in and pull-out test includes a short cycle test and a long cycle test, specifically:

[0201] (1) Small cycle test (cycle cycle within 200 times)

[0202] Maximum insertion force F that can be extracted per cycle i max and maximum extraction force F r max , plotting the number of plugging and unplugging cycles as the horizontal axis to obtain the curve of the insertion force and the extraction force changing with the increase of the number of plugging and unplugging cycles N.

[0203] To apply the embodiments of this application, please refer to Figure 2 , Figure 2 is a schematic diagram of the short-cycle plugging and unplugging force provided in the embodiment of the present application, indicating that during the short-cycle test, as the number of plugging and unplugging increases, the plugging and unplugging force will gradually change, thereby fitting the obtained linear regression curve; Figure 2 The figure shows the variation curve of insertion force and extraction force after 80 insertion and extraction cycles. Figure 2Taking 80 times as an example, the number of insertion and extraction force tests can be set according to the design and use cycle of the building blocks, such as 100 times, 200 times or more;

[0204] In addition, the linear regression curve is in the form of F max =An+B; A reflects the plug-in and pull-out performance stability of the building block (including factors affecting materials and structure). The smaller the A value, the smaller the change in plug-in and pull-out force with the increase in the number of plug-in and pull-out times n, and the more stable the plug-in and pull-out feel of the building block; B reflects the size of the initial plug-in and pull-out force of the building block. The larger the B value, the greater the initial plug-in and pull-out force. For example, for two building blocks with the same B value, their A values ​​are 0.02 and 0.05 respectively, the former is considered to have better feel stability.

[0205] To apply the embodiments of the present application, please refer to Table 1, which is a stability coefficient comparison table provided in the embodiments of the present application, indicating the changes in the stability coefficient and initial force value when the building block sample is inserted and pulled out.

[0206] Table 1 Stability coefficient comparison table

[0207] process Stability factor A / N Initial force value B / N Insert 0.0385 12.979 Remove 0.034 15.365 Mean 0.03625 14.172

[0208] (2) Long cycle test (cycle period greater than 200 cycles)

[0209] Long-term cycle test is used to characterize the service life of building blocks, with the maximum insertion force corresponding to the number of insertions N i and the number of extractions N r The average value N peek Characterizes the maximum number of plugging and unplugging times that a building block can maintain a normal feel, and the number of times used is greater than the average value N peek The plugging and unplugging force of the building block begins to decay continuously, which may cause the building block to disintegrate due to insufficient plugging and unplugging force; the average value N peek Characterizes the durability of building blocks. The larger the value, the better the durability of the building blocks.

[0210] To apply the embodiments of this application, please refer to Figure 3 , Figure 3 is a schematic diagram of the long-cycle plugging and unplugging force provided in an embodiment of the present application, indicating that during a long-cycle cycle test, as the number of plugging and unplugging increases, the plugging and unplugging force will gradually change, thereby fitting a linear regression curve;

[0211] To apply the embodiments of the present application, please refer to Tables 2 to 3; Table 2 is a table of limit times provided in the embodiments of the present application, which shows the experimental data obtained by testing the plugging and unplugging force cycles of the building block samples for 10,000 times; Table 3 is a table of evaluation indexes provided in the embodiments of the present application, which shows that according to the analysis results of Tables 1 to 2, the output includes A, B and N peek Long-term feel evaluation index of building blocks including;

[0212] As shown in Table 2, the insertion force of the building block sample can be maintained for 1700 times without attenuation, and the extraction force can be maintained for 1650 times without attenuation. The average number of cycles without attenuation is N. peek It is 1675 times.

[0213] Table 2 Limit times comparison table

[0214] process Limit number N Insert 1700 Remove 1650 Mean 1675

[0215] Table 3 Evaluation index comparison table

[0216]

[0217] In one embodiment, the model module 20 includes an import unit, an insert unit, a pull-out unit, a pop-up unit, an import sub-unit, an insert sub-unit, a pull-out sub-unit, a pop-up sub-unit, and a model sub-unit; wherein the import unit, the insert unit, the pull-out unit, and the pop-up unit are processes for defining different stages of the test, and the import sub-unit, the insert sub-unit, the pull-out sub-unit, the pop-up sub-unit, and the model sub-unit are processes for establishing a mathematical model, specifically:

[0218] The lead-in unit is used to define the stage from when the rounded corner edge of the top surface of the lower building block in the target building block begins to contact with the edge of the rib position of the upper building block to when the rounded corner edge of the top surface of the lower building block fully contacts with the edge of the rib position of the upper building block and then enters a stage of smooth insertion as the lead-in section;

[0219] An insertion unit is used to increase the matching contact surface between the lower block and the upper block in the target block, and the force value gradually increases with the stroke until the stage when the lower block and the upper block are fully inserted is defined as the insertion section;

[0220] A pull-out unit, used to define the stage from the lower building block and the upper building block being fully inserted to being pulled out as a pull-out section;

[0221] The ejection unit is used to define the stage in which the force of the lower building block and the upper building block is negative after the pulling-out stage as an ejection stage.

[0222] In this embodiment, the import unit, the insertion unit, the extraction unit and the ejection unit divide the plugging and unplugging process into different stages, and can more accurately capture the mechanical changes in each stage.

[0223] The import subunit is used to establish the import model F according to the stroke value L of the import section based on the single plug-in test data in the plug-in data. 导入 ;

[0224] The insertion subunit is used to establish the insertion model F according to the end point L1 of the lead-in segment and the lead-in segment stroke value L. 插入 ;

[0225] The extraction subunit is used to establish an extraction model F based on the starting force value F of the extraction segment. r max 建立拔出模型F 拔出 ;

[0226] The ejection subunit is used to define the absolute value F of the ejection force peak in the ejection segment as the ejection force expression F. o max 定义为弹出力表达式F 弹出 ; According to the travel end point L3 of the extraction segment and the travel end point L4 of the ejection segment, establish an ejection release expression E. 弹出 ; From the ejection force expression F. 弹出 和弹出释放表达式E 弹出 构成弹出模型Y 弹出 ; Among them, the ejection release expression E. 弹出 Can characterize the strength of the building block ejection. The larger this value, the better the automatic separation effect at the end of the building block ejection, and it can provide a better extraction experience for users.

[0227] The model subunit is used to form a mathematical model from the import model F. 导入 、插入模型F 插入 、拔出模型F 拔出 和弹出模型Y 弹出 构成数学模型。

[0228] Among them, the import model is:

[0229] F 导入 =aL

[0230] The insertion model is:

[0231] F 插入 =aL1+b(L-L1) n

[0232] The extraction model is:

[0233] F 拔出 =F r max

[0234] The ejection model is:

[0235] F 弹出 =F o max ;

[0236] E 弹出 =F 弹出 *L 弹出

[0237] Among them, for the import model, a is the force value coefficient of the import segment; L is the travel value of the import segment, 0 < L < L1, and L1 is the travel end point of the import segment.

[0238] For the insertion model, b is the force value coefficient of the insertion section, and n is the force value exponent; L is the stroke value of the insertion section, where L1 < L < L2, L1 is the end point of the insertion section stroke, and L2 is the end point of the insertion section stroke;

[0239] For the extraction model, F r max is the starting force value, that is, the maximum value of the extraction force; since the end point of the extraction section is marked by a force value of 0, the starting force value of this section is the maximum value of the extraction force;

[0240] For the ejection model, F o max is the absolute value of the peak ejection force; L 弹出 is the ejection stroke value, which is equal to the end point of the ejection section stroke L4 minus the end point of the extraction section stroke L3, that is, L 弹出 = L4 - L3.

[0241] For the application of the embodiments of the present application, please refer to Figure 4 , Figure 4 is the insertion and extraction force curve graph of the building blocks provided by the embodiments of the present application, which represents the change curve of the output force value with the stroke when the building block sample is subjected to a single plugging and unplugging test. As Figure 4 shown, this is the curve data obtained by testing with the material of Kingfa Technology HP - 126G001. It can be seen that the force value curve of a complete plugging and unplugging cycle is divided into 4 segments, namely the insertion section, the insertion section, the extraction section, and the ejection section;

[0242] For the insertion section, the stroke of this section is related to the rib position and rounded corner design of the building block. It can be seen from the force value curve that there is an obvious slope change; the relationship between the insertion force value and the stroke of the insertion section is obtained by fitting as F 导入 = 29.233L, 0 < L < L1 = 0.216;

[0243] For the insertion section, the relationship between the force value and the stroke of this material in the insertion section is obtained by fitting as F 插入

[0244] = 29.233L + 5.769(L - L1) 1.647 , 0.216 < L < L2 = 1.431; and the end point of this section is the point with the maximum insertion force value, F i max = 13.436N;

[0245] For the extraction section, the starting force value F r max = 16.031N;

[0246] For the ejection section, the absolute value of the peak ejection force F 弹出=1.175N; the area enclosed by the ejection curve and the X-axis is approximately a triangle, and its area represents the energy released by the ejection E 弹出 =F 弹出 *L 弹出 =0.3mJ.

[0247] To apply the embodiments of the present application, please refer to Table 4, which is a plug-in parameter comparison table provided in the embodiments of the present application, indicating the parameter fitting results obtained by testing the HP-126G001 material of Kingfa Science & Technology. In addition, a single plug-in test can obtain the parameters in the table through the original data and the fitting results to evaluate the plug-in force of the building block.

[0248] Table 4 Plug and unplug parameter comparison table

[0249]

[0250] In this embodiment, the introduction subunit, insertion subunit, extraction subunit, ejection subunit and model subunit can objectively quantify the insertion and extraction force characteristics of the building blocks by collecting actual insertion and extraction data, such as the stroke value and force value of the introduction section, insertion section, extraction section and ejection section, which solves the problem of traditional evaluation relying on subjective feelings. Based on the quantitative data, a model is established for each stage, which can accurately reflect the changes in the insertion and extraction force at each stage.

[0251] In one embodiment, the evaluation module 30 includes a single unit, a long-term unit, a system unit, a first scoring unit, an extreme unit, a second scoring unit, and a comprehensive scoring unit; wherein the single unit, the long-term unit, and the system unit are the process of establishing a plugging force scoring system, and the first scoring unit, the extreme unit, the second scoring unit, and the comprehensive scoring unit are the process of quantitatively evaluating the mathematical model and the plugging data through the plugging force scoring system to obtain the plugging force score, specifically:

[0252] The single unit is used to establish a single plug-in and pull-out scoring system (STS) for building blocks in the case of a single plug-in and pull-out test on the building blocks according to the lead-in force coefficient when the building blocks are introduced, the plug-in and pull-out force when the building blocks are plugged in and out, and the ejection energy when the building blocks are ejected;

[0253] Long-term unit, used to establish a long-term plug-in and pull-out scoring system (LTS) for building blocks based on the short-cycle plug-in and pull-out force stability coefficient and the long-cycle limit usage times of the building blocks when conducting long-cycle plug-in and pull-out tests on the building blocks;

[0254] System unit, used to form a plugging force scoring system TS-S / L by a building block single plugging scoring system STS and a building block long-term plugging scoring system LTS.

[0255] To apply the embodiments of the present application, please refer to Table 5, which is a visualization comparison table of the building block single plug-in scoring system provided by the embodiments of the present application, indicating the visualization results of the parameter scoring of the relevant mathematical model at different stages using the building block single plug-in scoring system STS, and the corresponding values ​​of the building block samples obtained by testing the HP-126G001 material of Kingfa Technology;

[0256] In addition, the building block single plug-in and pull-out scoring system STS uses the feel score STS-"Short-term Tactile Score" as the symbol of the single plug-in and pull-out feel of the building block, and its score ranges from 0 to 5.

[0257] Table 5 Visual comparison table of single plug-in and plug-out scoring system for building blocks

[0258]

[0259]

[0260] To apply the embodiments of the present application, please refer to Table 6, which is a visualization comparison table of the long-term plug-in scoring system for building blocks provided in the embodiments of the present application, indicating the visualization results of parameter scoring for different cycles using the long-term plug-in scoring system for building blocks LTS, as well as the corresponding values ​​of the building block samples in Table 3;

[0261] In addition, the long-term tactile score system LTS uses the long-term tactile score LTS-"Long-term TactileScore" as the symbol of the plug-in feel of the building blocks, and its score ranges from 0 to 5.

[0262] Table 6 Visual comparison table of long-term plug-in and plug-out scoring system for building blocks

[0263]

[0264]

[0265] The single unit, long-term unit and system unit of this embodiment realize the quantitative evaluation of the single plug-in and pull-out performance of the building blocks based on the specific indicators such as the force coefficient of the introduction section, the plug-in and pull-out force and the ejection energy. This quantitative method makes the evaluation results more objective and accurate, avoiding the deviation caused by subjective feelings; and the single plug-in and pull-out test can quickly give the scoring results, which is convenient for timely discovery of the plug-in and pull-out force problems of the building blocks in a single use. Through indicators such as the short-cycle plug-in and pull-out force stability coefficient and the long-cycle limit use times, the plug-in and pull-out force stability of the building blocks in the long-term use process is evaluated, so that the long-term plug-in and pull-out scoring system not only focuses on the performance of single plug-in and pull-out, but also focuses on the stability and limit times of long-term use, thereby achieving comprehensive coverage and evaluation of the plug-in and pull-out performance of the building blocks.

[0266] The first scoring unit is used to quantitatively evaluate the mathematical model through the building block single plug-in and pull-out scoring system STS of the plug-in and pull-out force scoring system TS-S / L to obtain a building block single plug-in and pull-out score;

[0267] The limit unit is used to calculate the long-term limit usage times N of the target building block based on the multiple cycles of plugging and unplugging test data in the plugging and unplugging data according to the number of insertions and unplugging times corresponding to the maximum plugging and unplugging force. peek ;

[0268] The second scoring unit is used to measure the long-term maximum usage times N through the long-term plug-in scoring system LTS of the plug-in force scoring system TS-S / L. peek The short-cycle plug-in and pull-out force stability coefficient of the target building block is quantitatively evaluated to obtain the long-term plug-in and pull-out score of the building block;

[0269] The comprehensive scoring unit is used to calculate the sum of the single plug-in and pull-out score of the building block and the long-term plug-in and pull-out score of the building block to obtain the plug-in and pull-out force score.

[0270] In this embodiment, the first scoring unit, the limit unit, the second scoring unit and the comprehensive scoring unit adopt a quantitative evaluation method to convert key indicators such as the long-term limit usage times and the short-term plug-in force stability coefficient into specific scores. This clear quantitative representation method helps users intuitively understand the long-term plug-in performance of the building blocks. By combining the single plug-in score and the long-term plug-in score, the plug-in force score can fully cover all aspects of the plug-in performance of the building blocks; because the single plug-in score focuses on the immediate performance of each plug-in, and the long-term plug-in score focuses on the stability and durability during long-term use, combining the two can provide a more complete and comprehensive performance evaluation result.

[0271] Overall, this embodiment has the following beneficial effects:

[0272] This application establishes the mathematical relationship between the plugging and unplugging force and the stroke through data analysis, and the resulting mathematical model can accurately describe the mechanical properties during the plugging and unplugging process. The plugging and unplugging force scoring system can provide a quantitative score based on the mathematical model and plugging and unplugging data, which provides a scientific basis for evaluating the plugging and unplugging performance of building blocks; and through model analysis, the plugging and unplugging performance of building blocks under different conditions can be predicted, providing a reference for product design and optimization. The plugging and unplugging force scoring system takes into account the mechanical properties of both single plugging and unplugging and cyclic plugging and unplugging scenarios, making the plugging and unplugging force evaluation results more comprehensive and better reflecting the performance of building blocks in actual use. This evaluation method is based on mechanical data obtained in actual plugging and unplugging operations, such as plugging and unplugging force, stroke, etc., to ensure the accuracy of the evaluation results; and the plugging and unplugging force scoring system provides a standardized method for evaluating the plugging and unplugging performance of building blocks, which helps to establish unified evaluation standards within the industry.

[0273] In addition, the present application improves the accuracy and reliability of test data by using high-precision sensors and customized fixtures. Example 2 covers the entire process from sample preparation to long-term performance evaluation, providing a comprehensive testing solution. By establishing a mathematical model and a scoring system, the test results are converted into quantitative indicators that are easy to understand and operate, so that the proposed test method and scoring system are innovative in the industry and can provide new perspectives and solutions. The resulting test scheme and scoring system can be directly applied to actual product development and quality control, and have high practical value. Therefore, the present application can be applied to building block toys of different types and sizes, and has good versatility and extensibility.

[0274] Embodiment three:

[0275] An embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for quantitatively evaluating the plugging and unplugging force of a building block;

[0276] Wherein, the quantitative evaluation method of the plugging and unplugging force of a building block, if implemented in the form of a software functional unit and used as an independent product, can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0277] The above are preferred embodiments of the present invention. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A quantitative evaluation method for plugging and unplugging force of building blocks, characterized in that: include: Get the plug-in and pull-out data when plugging and unplugging the target building block; Based on the plugging and unplugging data, a mathematical model is established according to the relationship between the plugging and unplugging force and the stroke; The mathematical model and the plugging and unplugging data are quantitatively evaluated through a plugging and unplugging force scoring system to obtain a plugging and unplugging force score; wherein the plugging and unplugging force scoring system is established based on the mechanical properties of a single plugging and unplugging of a building block and plugging and unplugging of a building block in a cycle.

2. A quantitative evaluation method for plugging and unplugging force of building blocks as claimed in claim 1, characterized in that: Based on the plugging and unplugging data, a mathematical model is established according to the relationship between the plugging and unplugging force and the stroke, specifically: The stage from when the edge of the lower building block in the target building block begins to contact with the edge of the upper building block to when the edge of the lower building block fully contacts with the edge of the upper building block and then enters a stage of smooth insertion is defined as the introduction stage; The stage in which the matching contact surface of the lower building block and the upper building block in the target building block increases until the building block is fully inserted is defined as an insertion stage; The stage from the lower building block and the upper building block being fully inserted to being pulled out is defined as a pulling-out section; The stage where the force of the lower building block and the upper building block is negative after the pulling-out stage is completed is defined as a pop-up stage; Based on the plugging and unplugging data, the mathematical model is established according to the strokes of the introduction section, the insertion section, the unplugging section and the ejection section.

3. A quantitative evaluation method for plugging and unplugging force of building blocks as claimed in claim 2, characterized in that: Based on the plugging and unplugging data, the mathematical model is established according to the travel of the introduction section, the insertion section, the unplugging section and the ejection section, specifically: Based on the plugging and unplugging data, establishing an import model according to the stroke value of the import section; Establishing an insertion model according to the stroke end point of the lead-in section and the stroke value of the lead-in section; Establishing a pull-out model according to the starting force value of the pull-out section; Establishing an ejection model according to the end point of the pull-out section and the end point of the ejection section; The mathematical model is composed of the introduction model, the insertion model, the extraction model and the ejection model.

4. A quantitative evaluation method for plugging and unplugging force of building blocks as claimed in claim 1, characterized in that: The plugging and unplugging force scoring system is established based on the mechanical properties of a single plugging and unplugging of a building block and plugging and unplugging of a building block in a cycle, specifically: In the case of a single plug-in and pull-out test on the building blocks, a single plug-in and pull-out scoring system is established according to the introduction section force coefficient when the building blocks are introduced, the plug-in and pull-out force when the building blocks are plugged in and out, and the ejection energy when the building blocks are ejected; When the building blocks are subjected to long-term plug-in and pull-out tests, a long-term plug-in and pull-out scoring system is established based on the small-cycle plug-in and pull-out force stability coefficient and the long-cycle limit usage times of the building blocks; The plugging and unplugging force scoring system is composed of the building block single plugging and unplugging scoring system and the building block long-term plugging and unplugging scoring system.

5. A quantitative evaluation method for plugging and unplugging force of building blocks as claimed in claim 4, characterized in that: The mathematical model and the plugging and unplugging data are quantitatively evaluated by the plugging and unplugging force scoring system to obtain a plugging and unplugging force score, which is specifically: The mathematical model is quantitatively evaluated by the building block single plug-in and pull-out scoring system of the plug-in and pull-out force scoring system to obtain a building block single plug-in and pull-out score; Based on the plugging and unplugging data, the long-period limit usage times of the target building block are calculated according to the insertion times and the unplugging times corresponding to the maximum insertion and unplugging force; The long-term plug-in and pull-out scoring system of the plug-in and pull-out force scoring system quantitatively evaluates the long-cycle limit usage times and the short-cycle plug-in and pull-out force stability coefficient of the target building block to obtain a long-term plug-in and pull-out score of the building block; The plugging and unplugging force score is calculated according to the single plugging and unplugging score of the building block and the long-term plugging and unplugging score of the building block.

6. A quantitative evaluation method for plugging and unplugging force of building blocks as claimed in claim 1, characterized in that: Before obtaining the plugging and unplugging data when performing the plugging and unplugging operation on the target building block, the method further includes: Clamping the target building block by a lower clamp of a clamp system; wherein the clamp system comprises an upper clamp and a lower clamp, and the target building block is composed of two upper and lower building blocks of the same structure; Under the condition of controlling the centering and alignment of the target building block and the upper clamp, the upper clamp is made to clamp the target building block; The clamp system is controlled to separate the upper block and the lower block of the target block, and the value of the force sensor and the value of the displacement sensor are cleared.

7. A quantitative evaluation device for the insertion and extraction force of building blocks, characterized in that: Includes data module, model module and evaluation module; Wherein, the data module is used to obtain plugging and unplugging data when performing plugging and unplugging operations on the target building block; The model module is used to establish a mathematical model based on the plugging and unplugging data according to the relationship between the plugging and unplugging force and the stroke; The evaluation module is used to quantitatively evaluate the mathematical model and the plugging and unplugging data through a plugging and unplugging force scoring system to obtain a plugging and unplugging force score; wherein the plugging and unplugging force scoring system is established based on the mechanical properties of a single plugging and unplugging of a building block and when plugging and unplugging the building block in a cycle.

8. A quantitative evaluation device for plugging and pulling force of building blocks as claimed in claim 7, characterized in that: The model module includes an import unit, an insert unit, a pull-out unit, an eject unit and a model unit; The introduction unit is used to define the stage from when the edge of the lower building block in the target building block begins to contact with the edge of the upper building block to when the edge of the lower building block fully contacts with the edge of the upper building block and then enters a stage of smooth insertion as the introduction section; The insertion unit is used to increase the matching contact surface of the lower building block and the upper building block in the target building block until the stage of full insertion is defined as an insertion section; The pulling-out unit is used to define the stage from the complete insertion state to the pulling-out state of the lower building block and the upper building block as a pulling-out section; The ejection unit is used to define a stage where the force of the lower building block and the upper building block is negative after the pulling-out stage ends as an ejection stage; The model unit is used to establish the mathematical model based on the plugging and unplugging data and according to the travel of the introduction section, the insertion section, the extraction section and the ejection section.

9. A quantitative evaluation device for plugging and pulling force of building blocks as claimed in claim 8, characterized in that: The model unit includes an import subunit, an insert subunit, a pull-out subunit, an eject subunit and a model subunit; Wherein, the import subunit is used to establish an import model based on the plug-in data and the stroke value of the import segment; The insertion subunit is used to establish an insertion model according to the stroke end point of the lead-in segment and the stroke value of the lead-in segment; The extraction subunit is used to establish an extraction model according to the starting point force value of the extraction section; The ejection subunit is used to establish an ejection model according to the end point of the pull-out section and the end point of the ejection section; The model subunit is used to form the mathematical model by the import model, the insertion model, the extraction model and the ejection model.

10. A storage medium, characterized in that: The storage medium stores a computer program, which is called and executed by a computer to implement a quantitative evaluation method for the insertion and extraction force of a building block as described in any one of claims 1 to 6.

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