Method and device for obtaining optimized parameters of static closing force of sliding door

Abstract

The present application relates to a method and device for obtaining optimized parameters of the static closing force of a sliding door, and relates to the field of vehicle design technology. The method includes the following steps: constructing a three-dimensional model of the sliding door based on the design data information of the sliding door, and obtaining the instantaneous center of movement at the moment of closing; segmenting the sealing strip of the three-dimensional model of the sliding door according to the change of the force arm on the three-dimensional model of the sliding door, and obtaining a plurality of sealing strip sub-segments; obtaining each force point and force direction of the three-dimensional model of the sliding door based on the instantaneous center of movement at the moment of closing and the plurality of sealing strip sub-segments, and constructing a moment balance model; obtaining the contribution of the static closing force and the plurality of reaction forces to the static closing force based on the moment balance model. The present application calculates, evaluates and optimizes the static closing force of the sliding door in the data design stage, which solves the problem that the prior art needs to evaluate and adjust the static closing force of the sliding door in the actual vehicle stage, avoids modifying the molds of parts such as the sliding door sealing strip, and saves project development costs and cycles.

Description

Technical Field

[0001] The present application relates to the field of vehicle design technology, and in particular to a method and device for obtaining optimized parameters of the static closing force of a sliding door. Background Art

[0002] The static closing force of a car door directly affects the manual closing force, the sound of the electric door unlocking, the dynamic NVH of the door, and the sealing performance of the door. Today, customers have higher and higher requirements for automobile NVH and perceived quality, which also makes the design range of the static closing force of the door narrower, the standards higher, and the design difficulty higher.

[0003] Currently, there are very complete calculation methods for the static closing force of common single-axis hinged rotating opening and closing car doors at home and abroad, but there is no calculation method for the static closing force of sliding doors. The reason is that the movement of sliding doors is not a simple single-axis rotation or translation, but a complex movement that combines three-dimensional rotation and three-dimensional translation. Therefore, it is impossible to establish a relatively matching mechanical model, and thus it is impossible to effectively study the static closing force of the car door.

[0004] Based on the requirements of automobile design, a technology for obtaining optimized parameters of the static closing force of a sliding door is provided to optimize the static closing force of the door. Summary of the invention

[0005] The present application provides a method and device for obtaining optimization parameters of the static closing force of a sliding door, which calculates, evaluates and optimizes the static closing force of a sliding door in the data design stage, thereby solving the problem in the prior art that the static closing force of a sliding door needs to be evaluated and adjusted in the actual vehicle stage, avoiding modification of molds of parts such as sliding door sealing strips, and saving project development costs and cycles.

[0006] To achieve the above objectives, this application provides the following solutions.

[0007] In a first aspect, the present application provides a method for obtaining optimized parameters of a static closing force of a sliding door, the method comprising the following steps:

[0008] Based on the design data information of the sliding door, a corresponding three-dimensional model of the sliding door is constructed, and the corresponding instantaneous center of movement at the closing moment is obtained;

[0009] According to the change of the force arm on the three-dimensional model of the sliding door, the sealing strip of the three-dimensional model of the sliding door is segmented to obtain a plurality of corresponding sealing strip sub-segments;

[0010] Based on the instantaneous movement center at the moment of closing and the plurality of sealing strip sub-segments, each force point and the corresponding force direction of the three-dimensional model of the sliding door are obtained, and a moment balance model is constructed;

[0011] Based on the torque balance model, the contribution of the static closing force and the corresponding multiple reaction forces to the static closing force is obtained.

[0012] Furthermore, the construction of a corresponding sliding door three-dimensional model based on the sliding door design data information and obtaining the corresponding closing instant movement instant center includes the following steps:

[0013] Based on the design data information of the sliding door, the upper, middle and lower hinge rollers are set as three mass points of the three-dimensional model of the sliding door;

[0014] Based on the sliding door design data information, a corresponding closing moment rotation axis is obtained;

[0015] Based on the rotation axis at the closing moment, obtaining a custom XY plane perpendicular to the rotation axis at the closing moment;

[0016] Based on the three mass points of the sliding door three-dimensional model and the custom XY plane, the instantaneous center of the closing movement is obtained.

[0017] Specifically, the spatial three-dimensional movement of the three-dimensional model of the sliding door at the moment of closing the door is a superimposed movement of the translation in the custom XY plane and the rotation relative to the rotation axis at the moment of closing.

[0018] Further, according to the change of the force arm on the three-dimensional model of the sliding door, the sealing strip of the three-dimensional model of the sliding door is segmented to obtain a plurality of corresponding sealing strip sub-segments, including the following steps:

[0019] The sealing strip is segmented based on the change of the force arm in the custom XY plane to obtain a plurality of corresponding sealing strip sub-segments.

[0020] Furthermore, the sealing strip sub-segment force calculation formula corresponding to the sealing strip sub-segment is:

[0021] in,

[0022] F x is the reaction force value of the sealing strip segment, S x is the length of the sealing strip subsection, and CLD is the compression force value.

[0023] Furthermore, in the moment balance model, the projection force calculation formula of the sliding door space reaction force projected onto the custom XY plane is:

[0024] F i =F z *cosα; where

[0025] F iis the projection force of the sliding door spatial reaction force onto the custom XY plane,

[0026] F z is the spatial reaction force of the sliding door;

[0027] α is the angle between the direction of the spatial reaction force of the sliding door and the custom XY plane.

[0028] Furthermore, based on the torque balance model, the static closing force and the corresponding multiple reaction forces contributing to the static closing force are obtained, and the static closing force calculation formula is:

[0029] in,

[0030] F c is the static closing force, F i is the projection force of the sliding door space reaction force onto the custom XY plane, L i is the resistance arm, L c For the power arm.

[0031] Furthermore, the calculation formula for the contribution of the reaction force to the static closing force is: in,

[0032] F i ′ is the contribution amount.

[0033] Furthermore, the sliding door design data information includes the sliding door guide rail trajectory, the hinge roller position, the sealing strip buffer block position and the sealing strip CLD value.

[0034] In a second aspect, the present application provides a device for obtaining optimized parameters of a static closing force of a sliding door, the device comprising:

[0035] A three-dimensional construction module, which is used to construct a corresponding three-dimensional model of the sliding door based on the design data information of the sliding door, and obtain the corresponding instantaneous center of movement at the closing moment;

[0036] A sealing strip segmentation module, which is used to segment the sealing strip of the three-dimensional model of the sliding door according to the change of the force arm on the three-dimensional model of the sliding door, and obtain a plurality of corresponding sealing strip sub-segments;

[0037] A torque balance module, which is used to obtain each force point and corresponding force direction of the three-dimensional model of the sliding door based on the instantaneous movement center of the closing moment and the plurality of sealing strip sub-segments, and to construct a torque balance model;

[0038] A contribution acquisition module is used to obtain the contribution of the static closing force and the corresponding multiple reaction forces to the static closing force based on the torque balance model.

[0039] Furthermore, the three-dimensional construction module is also used to set the upper, middle and lower hinge rollers as three mass points of the three-dimensional model of the sliding door based on the design data information of the sliding door;

[0040] The three-dimensional construction module is also used to obtain the corresponding closing moment rotation axis based on the sliding door design data information;

[0041] The three-dimensional construction module is also used to obtain a custom XY plane perpendicular to the rotation axis at the closing moment based on the rotation axis at the closing moment;

[0042] The three-dimensional construction module is also used to obtain the instantaneous center of the closing moment movement based on the three mass points of the three-dimensional model of the sliding door and the custom XY plane.

[0043] Specifically, the spatial three-dimensional movement of the three-dimensional model of the sliding door at the moment of closing the door is a superimposed movement of the translation in the custom XY plane and the rotation relative to the rotation axis at the moment of closing.

[0044] Furthermore, the sealing strip segmentation module is further used to segment the sealing strip based on the change of the force arm of the sealing strip in the custom XY plane to obtain a plurality of corresponding sealing strip sub-segments.

[0045] Furthermore, the sealing strip sub-segment force calculation formula corresponding to the sealing strip sub-segment is:

[0046] in,

[0047] F x is the reaction force value of the sealing strip segment, S x is the length of the sealing strip subsection, and CLD is the compression force value.

[0048] Furthermore, in the moment balance model, the projection force calculation formula of the sliding door space reaction force projected onto the custom XY plane is:

[0049] F i =F z *cosα; where

[0050] F i is the projection force of the sliding door spatial reaction force onto the custom XY plane,

[0051] F z is the spatial reaction force of the sliding door;

[0052] α is the angle between the direction of the spatial reaction force of the sliding door and the custom XY plane.

[0053] Furthermore, based on the torque balance model, the static closing force and the corresponding multiple reaction forces contributing to the static closing force are obtained, and the static closing force calculation formula is:

[0054] in,

[0055] F c is the static closing force, F i is the projection force of the sliding door space reaction force onto the custom XY plane, L i is the resistance arm, L c For the power arm.

[0056] Furthermore, the calculation formula for the contribution of the reaction force to the static closing force is: in,

[0057] F i ′ is the contribution amount.

[0058] Furthermore, the sliding door design data information includes the sliding door guide rail trajectory, the hinge roller position, the sealing strip buffer block position and the sealing strip CLD value.

[0059] The beneficial effects of the technical solution provided by this application include:

[0060] The present application calculates, evaluates and optimizes the static closing force of the sliding door in the data design stage, which solves the problem in the prior art that the static closing force of the sliding door needs to be evaluated and adjusted in the actual vehicle stage, avoids modifying the molds of parts such as the sliding door sealing strip, and saves project development costs and cycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Terminology explanation:

[0062] CLD: Compression Load Deflection, the compression load of the sealing strip itself.

[0063] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0064] Figure 1 A flowchart of the steps of the method for obtaining the optimization parameters of the static closing force of a sliding door provided in an embodiment of the present application;

[0065] Figure 2 It is a principle flow chart of the method for obtaining the optimization parameters of the static closing force of a sliding door provided in an embodiment of the present application;

[0066] Figure 3 A schematic diagram of particle distribution in a method for obtaining optimized parameters of a static closing force of a sliding door provided in an embodiment of the present application;

[0067] Figure 4 A schematic diagram of stress arms in a method for obtaining optimized parameters of static closing force of a sliding door provided in an embodiment of the present application;

[0068] Figure 5 A schematic diagram of a static moment balance model in a method for obtaining optimization parameters of a static closing force of a sliding door provided in an embodiment of the present application;

[0069] Figure 6 It is a schematic diagram of a calculation model of a sliding door of an existing vehicle model in the method for obtaining optimization parameters of the static closing force of a sliding door provided in an embodiment of the present application;

[0070] Figure 7 This is a structural block diagram of a device for acquiring optimization parameters of the static closing force of a sliding door provided in an embodiment of the present application. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are 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 making creative work are within the scope of protection of this application.

[0072] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0073] The embodiments of the present application provide a method and device for obtaining optimization parameters of the static closing force of a sliding door, which calculates, evaluates and optimizes the static closing force of a sliding door in the data design stage, thereby solving the problem in the prior art of needing to evaluate and adjust the static closing force of a sliding door in the actual vehicle stage, avoiding modification of molds of parts such as sliding door sealing strips, and saving project development costs and cycles.

[0074] In order to achieve the above technical effects, the overall idea of ​​this application is as follows:

[0075] A method for obtaining optimized parameters of static closing force of a sliding door, the method comprising the following steps:

[0076] S1. Based on the design data information of the sliding door, a corresponding three-dimensional model of the sliding door is constructed, and the corresponding instantaneous center of movement at the closing moment is obtained;

[0077] S2. Segmenting the sealing strip of the three-dimensional model of the sliding door according to the change of the force arm on the three-dimensional model of the sliding door to obtain a plurality of corresponding sealing strip sub-segments;

[0078] S3. Based on the instantaneous center of movement at the moment of closing and multiple sealing strip sub-segments, various force points and corresponding force directions of the three-dimensional model of the sliding door are obtained, and a moment balance model is constructed;

[0079] S4. Based on the torque balance model, the contribution of the static closing force and the corresponding multiple reaction forces to the static closing force is obtained.

[0080] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0081] See also Figures 1 to 6 As shown, an embodiment of the present application provides a method for obtaining optimized parameters of the static closing force of a sliding door, the method comprising the following steps:

[0082] S1. Based on the design data information of the sliding door, a corresponding three-dimensional model of the sliding door is constructed, and the corresponding instantaneous center of movement at the closing moment is obtained;

[0083] S2. Segmenting the sealing strip of the three-dimensional model of the sliding door according to the change of the force arm on the three-dimensional model of the sliding door to obtain a plurality of corresponding sealing strip sub-segments;

[0084] S3. Based on the instantaneous center of movement at the moment of closing and multiple sealing strip sub-segments, various force points and corresponding force directions of the three-dimensional model of the sliding door are obtained, and a moment balance model is constructed;

[0085] S4. Based on the torque balance model, the contribution of the static closing force and the corresponding multiple reaction forces to the static closing force is obtained.

[0086] In the embodiment of the present application, the static closing force of the sliding door is calculated, evaluated and optimized in the data design stage, which solves the problem in the prior art that the static closing force of the sliding door needs to be evaluated and adjusted in the actual vehicle stage, avoids modifying the molds of parts such as the sliding door sealing strip, and saves project development costs and cycles.

[0087] In addition, the embodiment of the present application can not only calculate the total static closing force of the sliding door, but also calculate the contribution of the reaction force of each component, and combine it with the force value comparison of other models to identify which component has a larger or smaller reaction force, thereby providing accurate theoretical guidance for subsequent design optimization and saving development time and cost;

[0088] On the contrary, without this theoretical guidance, it is easy to modify parts that should not be modified, affecting other performance of the system. The lack of theoretical calculation of the amount of change can easily lead to repeated modifications.

[0089] Furthermore, based on the calculation model of the embodiment of the present application, the correspondence and consistency analysis is carried out with the actual vehicle measurement values, and then the calculation model is corrected and optimized. Through cyclic iterative optimization, the accuracy of the calculation model is continuously improved, further reducing the risk of mold repair in the vehicle manufacturing stage, saving mold repair cycle and cost.

[0090] Furthermore, the construction of a corresponding sliding door three-dimensional model based on the sliding door design data information and obtaining the corresponding closing instant movement instant center includes the following steps:

[0091] Based on the design data information of the sliding door, the upper, middle and lower hinge rollers are set as three mass points of the three-dimensional model of the sliding door;

[0092] Based on the sliding door design data information, a corresponding closing moment rotation axis is obtained;

[0093] Based on the rotation axis at the closing moment, obtaining a custom XY plane perpendicular to the rotation axis at the closing moment;

[0094] Based on the three mass points of the sliding door three-dimensional model and the custom XY plane, the instantaneous center of the closing movement is obtained.

[0095] Specifically, the spatial three-dimensional movement of the three-dimensional model of the sliding door at the moment of closing the door is a superimposed movement of the translation in the custom XY plane and the rotation relative to the rotation axis at the moment of closing.

[0096] Further, according to the change of the force arm on the three-dimensional model of the sliding door, the sealing strip of the three-dimensional model of the sliding door is segmented to obtain a plurality of corresponding sealing strip sub-segments, including the following steps:

[0097] The sealing strip is segmented based on the change of the force arm in the custom XY plane to obtain a plurality of corresponding sealing strip sub-segments.

[0098] Furthermore, the sealing strip sub-segment force calculation formula corresponding to the sealing strip sub-segment is:

[0099] in,

[0100] F x is the reaction force value of the sealing strip segment, S x is the length of the sealing strip subsection, and CLD is the compression force value.

[0101] It should be noted that CLD, Compression Load Deflection, is the compression load of the sealing strip itself, which indicates the force provided by the sealing strip itself under the designed compression gap state per 100mm.

[0102] Furthermore, in the moment balance model, the projection force calculation formula of the sliding door space reaction force projected onto the custom XY plane is:

[0103] F i =F z *cosα; where

[0104] F i is the projection force of the sliding door spatial reaction force onto the custom XY plane,

[0105] F z is the spatial reaction force of the sliding door;

[0106] α is the angle between the direction of the spatial reaction force of the sliding door and the custom XY plane.

[0107] Furthermore, based on the torque balance model, the static closing force and the corresponding multiple reaction forces contributing to the static closing force are obtained, and the static closing force calculation formula is:

[0108] in,

[0109] F c is the static closing force, F i is the projection force of the sliding door space reaction force onto the custom XY plane, L i is the resistance arm, L c For the power arm.

[0110] Furthermore, the calculation formula for the contribution of the reaction force to the static closing force is: in,

[0111] F i ′ is the contribution amount.

[0112] Furthermore, the sliding door design data information includes the sliding door guide rail trajectory, the hinge roller position, the sealing strip buffer block position and the sealing strip CLD value.

[0113] Based on the technical solution of the embodiment of this application, the specific implementation is as follows:

[0114] Step 1: The first version of sliding door data includes at least the main design parameters such as the sliding door guide track line and hinge roller position, the layout position of the sealing strip buffer block, etc. and the CLD value, among which;

[0115] The CLD curve and compression amount can be first referenced to other mature models, and then adjusted according to the calculation results of step six.

[0116] Step 2: Consider all the parts fixed to the sliding door sheet metal as a rigid body. The upper, middle and lower hinge rollers are the three mass points P1, P2 and P3 on the rigid body. Figure 3 The movement directions of these three particles at the moment of closing the sliding door are along the direction of their respective matching guide rail trajectories, as shown in the accompanying drawings of the specification. Figure 3 The direction of the arrow in, where;

[0117] The upper and lower rail tracks are nearly parallel, and the upper and lower hinge mass centers are close to overall translation along the upper and lower rail tracks, that is, the front of the sliding door is translated from top to bottom in this direction, and the rear of the sliding door (middle hinge roller) is along the middle rail track, with an angle with the front movement direction. Therefore, the sliding door can find a unique rotation axis at the moment of closing, and its rotation axis is perpendicular to the XY plane. The plane where the three rails are located is close to parallel to the XY plane. In this way, the three-dimensional spatial motion of the sliding door at the moment of closing can be simplified to the superposition of translation and rotation in the XY plane, that is, the superposition of translation along the upper and lower rail tracks and the rotation of the rear relative to the front. The method for generating the instantaneous center of motion is:

[0118] The sliding door system is projected onto the XY plane, and perpendicular lines are drawn through the upper, middle and lower hinges P1, P2 and P3 respectively, perpendicular to their respective instantaneous motion directions (guide rail track directions). The intersection point is the instantaneous center of motion. For details, see the attached figure of the specification. Figure 3 After determining the instantaneous center of motion of the sliding door, the moment balance model can be established. For details, see step 5.

[0119] Step 3: The force of the sealing strip on the sliding door is not concentrated at one point and one direction like the reaction force of the buffer block, but is linearly distributed at different positions and directions along with the arrangement of the sealing strip;

[0120] Therefore, the reaction force of the sealing strip cannot be reflected by a single force, but it can be reasonably divided into segments according to the change of the force arm of the sealing strip in the XY plane. If there are too many segments, the calculation will be too complicated, and if there are too few segments, the calculation accuracy will be lower. The basic principle is to divide the segments according to the change of the force arm.

[0121] With the attached drawings Figure 4 For example, it is a segmented diagram of the sealing system of a certain vehicle model. For the continuous parts with constant force arms, such as F1 and F3 (corresponding to the constant stress arms L1 and L3), and the continuous parts with linear changes in force arms, such as F2 (corresponding to the stress arm L2), they can all be regarded as a segment, and their action points can be selected at the midpoint of the straight line.

[0122] For the continuous part of the force arm curve, select the center of gravity position of the sealing surface corresponding to the section of the sealing strip. For example, for the arc-shaped wheel brow strip, first extract the compression surface matching the wheel brow strip, and then use the CATIA software inertia measurement tool to measure the center of gravity of the compression surface. In this way, the point of action of the equivalent reaction force F4 of the wheel brow strip is found, and the corresponding stress arm L4 is also found synchronously.

[0123] In this way, all sealing strips can be decomposed into several component forces according to the above segmentation method. The force value Fx of each component force is calculated as follows:

[0124] in,

[0125] F x is the reaction force value of the sealing strip segment, S x is the length of the sealing strip sub-segment, and CLD is the compression force value corresponding to every 100 mm length of the sealing strip.

[0126] Step 4: For all sealing strips, make a line segment on the three-dimensional data according to the component forces corresponding to all segmented sealing strips in step 3, make a line segment from the point of action of the component force along the direction of action, and make a line segment perpendicular to the compression surface along the center of fit for other buffer blocks. The force value is found according to the designed compression displacement curve.

[0127] Step 5, static closing moment of the sliding door, that is, very slow closing moment, corresponding static balance:

[0128] The static closing force of the sliding door, that is, the locking force of the electric sliding door, is basically close to the horizontal direction, that is, parallel to the XY plane. Therefore, to solve this static closing force, it is only necessary to project all the forces of the sliding door into the XY plane, and combine it with the instantaneous center of motion solved in step 2 to establish a static moment balance model in the plane, as shown in the figure attached to the specification. Figure 5 As shown, the projection force calculation formula of the sliding door space reaction force projected onto the custom XY plane is:

[0129] F i =F z *cosα; where

[0130] F i is the projection force of the sliding door spatial reaction force onto the custom XY plane,

[0131] F z is the spatial reaction force of the sliding door;

[0132] α is the angle between the direction of the spatial reaction force of the sliding door and the custom XY plane.

[0133] Step 6: Based on the torque balance model and the torque balance principle:

[0134] Static closing force calculation formula:

[0135] The contribution of each reaction force to the static closing force, that is, the contribution of the reaction force to the static closing force, is calculated as follows:

[0136] Enter the above formula into the table to obtain the final calculation model. Figure 6 This is a calculation model for the sliding door of an existing car model. Combined with previous car manufacturing experience and the accumulated measured values ​​of mature models in the market, the recommended range of the static closing force of the sliding door is (410±50)N. The contribution of other reaction forces also has reference values, so that the design can be adjusted based on empirical values ​​to optimize the closing force.

[0137] Step 7: During the vehicle manufacturing stage, it is necessary to batch measure the static closing force of actual vehicles with different internal gaps and sealing strips CLD. The method to measure the contribution of each part is to remove a part separately and measure the static closing force before and after removal. The difference is the contribution of the reaction force of the part to the static closing force. Record the resultant force and component force values ​​and compare the accuracy with the previous theoretical calculation values, as shown in the figure attached to the manual. Figure 6 The last two columns in the table have large deviations and need further analysis and optimization of the calculation model. This will continuously iterate and improve the accuracy of the calculation model.

[0138] See also Figure 7 As shown, based on the same inventive concept as the method embodiment, the embodiment of the present application provides a device for obtaining optimized parameters of the static closing force of a sliding door, the device comprising:

[0139] A three-dimensional construction module, which is used to construct a corresponding three-dimensional model of the sliding door based on the design data information of the sliding door, and obtain the corresponding instantaneous center of movement at the closing moment;

[0140] A sealing strip segmentation module, which is used to segment the sealing strip of the three-dimensional model of the sliding door according to the change of the force arm on the three-dimensional model of the sliding door, and obtain a plurality of corresponding sealing strip sub-segments;

[0141] A torque balance module, which is used to obtain each force point and corresponding force direction of the three-dimensional model of the sliding door based on the instantaneous movement center of the closing moment and the plurality of sealing strip sub-segments, and to construct a torque balance model;

[0142] A contribution acquisition module is used to obtain the contribution of the static closing force and the corresponding multiple reaction forces to the static closing force based on the torque balance model.

[0143] In the embodiment of the present application, the static closing force of the sliding door is calculated, evaluated and optimized in the data design stage, which solves the problem in the prior art that the static closing force of the sliding door needs to be evaluated and adjusted in the actual vehicle stage, avoids modifying the molds of parts such as the sliding door sealing strip, and saves project development costs and cycles.

[0144] In addition, the embodiment of the present application can not only calculate the total static closing force of the sliding door, but also calculate the contribution of the reaction force of each component, and combine it with the force value comparison of other models to identify which component has a larger or smaller reaction force, thereby providing accurate theoretical guidance for subsequent design optimization and saving development time and cost;

[0145] On the contrary, without this theoretical guidance, it is easy to modify parts that should not be modified, affecting other performance of the system. The lack of theoretical calculation of the amount of change can easily lead to repeated modifications.

[0146] Furthermore, based on the calculation model of the embodiment of the present application, the correspondence and consistency analysis is carried out with the actual vehicle measurement values, and then the calculation model is corrected and optimized. Through cyclic iterative optimization, the accuracy of the calculation model is continuously improved, further reducing the risk of mold repair in the vehicle manufacturing stage, saving mold repair cycle and cost.

[0147] Furthermore, the three-dimensional construction module is also used to set the upper, middle and lower hinge rollers as three mass points of the three-dimensional model of the sliding door based on the design data information of the sliding door;

[0148] The three-dimensional construction module is also used to obtain the corresponding closing moment rotation axis based on the sliding door design data information;

[0149] The three-dimensional construction module is also used to obtain a custom XY plane perpendicular to the rotation axis at the closing moment based on the rotation axis at the closing moment;

[0150] The three-dimensional construction module is also used to obtain the instantaneous center of the closing moment movement based on the three mass points of the three-dimensional model of the sliding door and the custom XY plane.

[0151] Specifically, the spatial three-dimensional movement of the three-dimensional model of the sliding door at the moment of closing the door is a superimposed movement of the translation in the custom XY plane and the rotation relative to the rotation axis at the moment of closing.

[0152] Furthermore, the sealing strip segmentation module is further used to segment the sealing strip based on the change of the force arm of the sealing strip in the custom XY plane to obtain a plurality of corresponding sealing strip sub-segments.

[0153] Furthermore, the sealing strip sub-segment force calculation formula corresponding to the sealing strip sub-segment is:

[0154] in,

[0155] F x is the reaction force value of the sealing strip segment, S x is the length of the sealing strip subsection, and CLD is the compression force value.

[0156] Furthermore, in the moment balance model, the projection force calculation formula of the sliding door space reaction force projected onto the custom XY plane is:

[0157] F i =F z *cosα; where

[0158] F i is the projection force of the sliding door spatial reaction force onto the custom XY plane,

[0159] F z is the spatial reaction force of the sliding door;

[0160] α is the angle between the direction of the spatial reaction force of the sliding door and the custom XY plane.

[0161] Furthermore, based on the torque balance model, the static closing force and the corresponding multiple reaction forces contributing to the static closing force are obtained, and the static closing force calculation formula is:

[0162] in,

[0163] F c is the static closing force, F i is the projection force of the sliding door space reaction force onto the custom XY plane, L i is the resistance arm, L c For the power arm.

[0164] Furthermore, the calculation formula for the contribution of the reaction force to the static closing force is: in,

[0165] F i ′ is the contribution amount.

[0166] Furthermore, the sliding door design data information includes the sliding door guide rail trajectory, the hinge roller position, the sealing strip buffer block position and the sealing strip CLD value.

[0167] It should be noted that the device for obtaining the optimization parameters of the static closing force of a sliding door provided in the embodiment of the present application, and its corresponding technical problems, technical means and technical effects are similar in principle to the principles of the method for obtaining the optimization parameters of the static closing force of a sliding door.

[0168] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0169] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A method for obtaining optimized parameters of static closing force of a sliding door, characterized in that: The method comprises the following steps: Based on the design data information of the sliding door, a corresponding three-dimensional model of the sliding door is constructed, and the corresponding instantaneous center of movement at the closing moment is obtained; According to the change of the force arm on the three-dimensional model of the sliding door, the sealing strip of the three-dimensional model of the sliding door is segmented to obtain a plurality of corresponding sealing strip sub-segments; Based on the instantaneous movement center at the moment of closing and the plurality of sealing strip sub-segments, each force point and the corresponding force direction of the three-dimensional model of the sliding door are obtained, and a moment balance model is constructed; Based on the torque balance model, obtaining the contribution of the static closing force and the corresponding multiple reaction forces to the static closing force; The method of constructing a corresponding sliding door three-dimensional model based on the sliding door design data information and obtaining a corresponding closing instant movement center includes the following steps: Based on the design data information of the sliding door, the upper, middle and lower hinge rollers are set as three mass points of the three-dimensional model of the sliding door; Based on the sliding door design data information, a corresponding closing moment rotation axis is obtained; Based on the rotation axis at the closing moment, obtaining a custom XY plane perpendicular to the rotation axis at the closing moment; Based on the three mass points of the sliding door three-dimensional model and the custom XY plane, the instantaneous center of movement at the closing moment is obtained; The calculation formula of the sealing strip sub-segment force corresponding to the sealing strip sub-segment is: In the moment balance model, the projection force calculation formula of the sliding door space reaction force projected onto the custom XY plane is: F i =F z *cosα; Based on the torque balance model, the static closing force and the corresponding multiple reaction forces contributing to the static closing force are obtained. The static closing force calculation formula is: The contribution of the reaction force to the static closing force is calculated as follows: Among them, F x is the reaction force value of the sealing strip segment, S x is the length of the sealing strip sub-segment, CLD is the compression force value; F i The projection force of the sliding door spatial reaction force onto the custom XY plane; F z is the spatial reaction force of the sliding door; α is the angle between the direction of the sliding door spatial reaction force and the custom XY plane; F c is the static closing force, F i is the projection force of the sliding door space reaction force onto the custom XY plane, L i is the resistance arm, L c For the power arm; F i ′ is the contribution amount; i is the serial number of each component on the sliding door, and the total number of components on the sliding door is n.

2. The method for obtaining optimized parameters of the static closing force of a sliding door according to claim 1, characterized in that: The method of constructing a corresponding sliding door three-dimensional model based on the sliding door design data information and obtaining a corresponding closing instant movement center includes the following steps: Based on the design data information of the sliding door, the upper, middle and lower hinge rollers are set as three mass points of the three-dimensional model of the sliding door; Based on the sliding door design data information, a corresponding closing moment rotation axis is obtained; Based on the rotation axis at the closing moment, obtaining a custom XY plane perpendicular to the rotation axis at the closing moment; Based on the three mass points of the sliding door three-dimensional model and the custom XY plane, the instantaneous center of the closing movement is obtained.

3. The method for obtaining optimized parameters of the static closing force of a sliding door according to claim 2, characterized in that: The spatial three-dimensional motion of the three-dimensional model of the sliding door at the moment of closing the door is a superimposed motion of translation within the custom XY plane and rotation relative to the rotation axis at the moment of closing.

4. The method for obtaining optimized parameters of the static closing force of a sliding door according to claim 2, characterized in that: According to the change of the force arm on the three-dimensional model of the sliding door, the sealing strip of the three-dimensional model of the sliding door is segmented to obtain a plurality of corresponding sealing strip sub-segments, including the following steps: The sealing strip is segmented based on the change of the force arm in the custom XY plane to obtain a plurality of corresponding sealing strip sub-segments.

5. The method for obtaining optimized parameters of static closing force of a sliding door according to claim 1, characterized in that: The sliding door design data information includes the sliding door guide rail trajectory, hinge roller position, sealing strip buffer block position and sealing strip CLD value.

6. A device for obtaining optimized parameters of static closing force of a sliding door, characterized in that: The device comprises: A three-dimensional construction module, which is used to construct a corresponding three-dimensional model of the sliding door based on the design data information of the sliding door, and obtain the corresponding instantaneous center of movement at the closing moment; A sealing strip segmentation module, which is used to segment the sealing strip of the three-dimensional model of the sliding door according to the change of the force arm on the three-dimensional model of the sliding door, and obtain a plurality of corresponding sealing strip sub-segments; A torque balance module, which is used to obtain each force point and corresponding force direction of the three-dimensional model of the sliding door based on the instantaneous movement center of the closing moment and the plurality of sealing strip sub-segments, and to construct a torque balance model; A contribution acquisition module, which is used to obtain the contribution of the static closing force and the corresponding multiple reaction forces to the static closing force based on the torque balance model; The three-dimensional construction module is also used to set the upper, middle and lower hinge rollers as three mass points of the three-dimensional model of the sliding door based on the design data information of the sliding door; The three-dimensional construction module is also used to obtain the corresponding closing moment rotation axis based on the sliding door design data information; The three-dimensional construction module is also used to obtain a custom XY plane perpendicular to the rotation axis at the closing moment based on the rotation axis at the closing moment; The three-dimensional construction module is also used to obtain the instantaneous center of movement at the closing moment based on the three mass points of the three-dimensional model of the sliding door and the custom XY plane; The calculation formula of the sealing strip sub-segment force corresponding to the sealing strip sub-segment is: In the moment balance model, the projection force calculation formula of the sliding door space reaction force projected onto the custom XY plane is: F i =F z *cosα; Based on the torque balance model, the static closing force and the corresponding multiple reaction forces contributing to the static closing force are obtained. The static closing force calculation formula is: The contribution of the reaction force to the static closing force is calculated as follows: Among them, F x is the reaction force value of the sealing strip segment, S x is the length of the sealing strip sub-segment, CLD is the compression force value; F i The projection force of the sliding door spatial reaction force onto the custom XY plane; F z is the spatial reaction force of the sliding door; α is the angle between the direction of the sliding door spatial reaction force and the custom XY plane; F c is the static closing force, F i is the projection force of the sliding door space reaction force onto the custom XY plane, L i is the resistance arm, L c For the power arm; F i ′ is the contribution amount; i is the serial number of each component on the sliding door, and the total number of components on the sliding door is n.

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