Gas spring design method and device for vehicle back door, electronic equipment and medium

Abstract

The invention relates to the technical field of vehicles, in particular to an air spring design method and device for a vehicle back door, electronic equipment and a medium, and the method comprises the steps of obtaining geometric elements and target parameters of an air spring, then determining an initial design strategy of the air spring, and then obtaining a target angle of the vehicle back door; calculating and recording control output parameters of the gas spring under various temperature working conditions based on the target angle, generating an output parameter data set under each temperature working condition, and generating an alarm prompt when the output parameter data set does not meet a preset gas spring design condition, so as to remind a user to re-input the target angle of the vehicle back door, thereby improving the user experience. And obtaining a final design strategy of the gas spring until the output parameter data set meets a preset gas spring design condition. Therefore, the problems that calculation software in the related technology cannot directly design, check and analyze the gas spring, and the calculation complexity is increased due to the fact that the directions of torques provided by the gas spring in different working states are different are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a design method, device, electronic device and medium for a gas spring of a vehicle tailgate. Background Art

[0002] In automobile design, gas springs are widely used to support and assist the opening and closing of automobile tailgates. The gas spring layout, calculation and verification methods in related technologies usually rely on traditional professional calculation software.

[0003] However, traditional professional computing software limits the ability of relevant technical personnel to directly design, verify and analyze gas springs on the platform. At the same time, since the torque directions provided by gas springs in different working conditions (such as compression and extension) are different, the calculation complexity is increased and needs to be solved urgently. Summary of the invention

[0004] The present application provides a method, device, electronic device and medium for designing a gas spring for a vehicle tailgate, so as to solve the problems that the calculation software of the related technology cannot directly design, check and analyze the gas spring, and the calculation complexity is increased because the torque direction provided by the gas spring is different under different working conditions.

[0005] The first embodiment of the present application provides a method for designing a gas spring for a vehicle tailgate, comprising the following steps:

[0006] Acquire geometric elements and target parameters of the gas spring input by a user, and determine an initial design strategy of the gas spring based on the geometric elements and target parameters of the gas spring;

[0007] Based on the initial design strategy of the gas spring, a target angle of the vehicle tailgate is obtained, and based on the target angle, control output parameters of the gas spring under various temperature conditions are calculated, and the calculation results are recorded to generate an output parameter data set under each temperature condition;

[0008] Determine whether the output parameter data set satisfies the preset gas spring design conditions. If the output parameter data set does not satisfy the preset gas spring design conditions, generate an alarm prompt to remind the user to re-enter the target angle of the vehicle tailgate until the output parameter data set satisfies the preset gas spring design conditions, thereby obtaining a final design strategy for the gas spring.

[0009] According to one embodiment of the present application, obtaining the gas spring input data of the user and determining the initial design strategy of the gas spring based on the gas spring input data includes:

[0010] Obtain the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set input by the user;

[0011] The gas spring body hinge point is calculated based on the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set, and the initial design strategy of the gas spring is determined based on the gas spring body hinge point.

[0012] According to an embodiment of the present application, the initial design strategy based on the gas spring, obtaining the target angle of the vehicle tailgate, and calculating the control output parameters of the gas spring under various temperature conditions based on the target angle include:

[0013] Based on the target angle of the vehicle tailgate, the first instantaneous door closing force, the first full-range maximum door closing force, the first instantaneous door opening force and the first full-range maximum door opening force of the gas spring under high temperature conditions are calculated, as well as the second instantaneous door closing force, the second full-range maximum door closing force, the second instantaneous door opening force and the second full-range maximum door opening force of the gas spring under normal temperature conditions, the third instantaneous door closing force, the third full-range maximum door closing force, the third instantaneous door opening force and the third full-range maximum door opening force of the gas spring under low temperature conditions and the maximum compression of the gas spring during the opening and closing process.

[0014] According to an embodiment of the present application, the determining whether the output parameter data set satisfies a preset gas spring design condition, and generating an alarm prompt if the output parameter data set does not satisfy the preset gas spring design condition, includes:

[0015] Determine whether the target angle is greater than a preset angle threshold, or whether the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions are greater than a first preset closing force threshold, or whether the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low temperature conditions are less than a second preset closing force threshold, or whether the maximum compression of the gas spring during the opening and closing process is greater than a preset compression threshold;

[0016] If the target angle is greater than the preset angle threshold, or the first instantaneous closing force and the first full-range maximum closing force of the gas spring under the high temperature condition are greater than the first preset closing force threshold, or the third instantaneous closing force and the third full-range maximum closing force of the gas spring under the low temperature condition are less than the second preset closing force threshold, or the maximum compression of the gas spring during the opening and closing process is greater than the preset compression threshold, it is determined that the output parameter data set does not meet the preset gas spring design conditions.

[0017] According to one embodiment of the present application, the maximum compression amount of the gas spring during the opening and closing process includes:

[0018] Calculating the instantaneous length of the gas spring corresponding to the target angle based on the target angle;

[0019] The maximum compression amount of the gas spring during the opening and closing process is obtained according to the natural state length of the gas spring in the gas spring input parameter set and the instantaneous length of the gas spring.

[0020] According to the gas spring design method for the vehicle back door of the embodiment of the present application, the geometric elements and target parameters of the gas spring are obtained, and then the initial design strategy of the gas spring is determined, and then the target angle of the vehicle back door is obtained, and the control output parameters of the gas spring under various temperature conditions are calculated and recorded based on the target angle, and an output parameter data set under each temperature condition is generated, and when the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle back door, until the output parameter data set meets the preset gas spring design conditions, and the final design strategy of the gas spring is obtained. Thus, the problem that the calculation software of the related technology cannot directly design, check and analyze the gas spring, and the calculation complexity is increased due to the different torque directions provided by the gas spring under different working conditions is solved. The present application is based on the development of a three-dimensional design software with functions such as parametric design, management of parameter relationships and rules, optimization design, parameter value checking and conditional response, and adjusts the layout of the gas spring in real time according to the input geometric elements and parameters, outputs control parameters and completes the gas spring selection, and obtains the final gas spring layout through verification analysis, thereby improving the adaptability and reliability of the gas spring design.

[0021] A second aspect of the present application provides a gas spring design device for a vehicle tailgate, comprising:

[0022] An acquisition module, used for acquiring geometric elements and target parameters of the gas spring input by a user, and determining an initial design strategy of the gas spring based on the geometric elements and target parameters of the gas spring;

[0023] a calculation module, for obtaining a target angle of the vehicle tailgate based on an initial design strategy of the gas spring, calculating control output parameters of the gas spring under various temperature conditions based on the target angle, and recording the calculation results to generate an output parameter data set under each temperature condition;

[0024] An adjustment module is used to determine whether the output parameter data set meets the preset gas spring design conditions. If the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle tailgate until the output parameter data set meets the preset gas spring design conditions, thereby obtaining a final design strategy for the gas spring.

[0025] According to one embodiment of the present application, the acquisition module is specifically used to:

[0026] Obtain the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set input by the user;

[0027] The gas spring body hinge point is calculated based on the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set, and the initial design strategy of the gas spring is determined based on the gas spring body hinge point.

[0028] According to one embodiment of the present application, the computing module is specifically used for:

[0029] Based on the target angle of the vehicle tailgate, the first instantaneous door closing force, the first full-range maximum door closing force, the first instantaneous door opening force and the first full-range maximum door opening force of the gas spring under high temperature conditions are calculated, as well as the second instantaneous door closing force, the second full-range maximum door closing force, the second instantaneous door opening force and the second full-range maximum door opening force of the gas spring under normal temperature conditions, the third instantaneous door closing force, the third full-range maximum door closing force, the third instantaneous door opening force and the third full-range maximum door opening force of the gas spring under low temperature conditions and the maximum compression of the gas spring during the opening and closing process.

[0030] According to one embodiment of the present application, the adjustment module is specifically used to:

[0031] Determine whether the target angle is greater than a preset angle threshold, or whether the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions are greater than a first preset closing force threshold, or whether the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low temperature conditions are less than a second preset closing force threshold, or whether the maximum compression of the gas spring during the opening and closing process is greater than a preset compression threshold;

[0032] If the target angle is greater than the preset angle threshold, or the first instantaneous closing force and the first full-range maximum closing force of the gas spring under the high temperature condition are greater than the first preset closing force threshold, or the third instantaneous closing force and the third full-range maximum closing force of the gas spring under the low temperature condition are less than the second preset closing force threshold, or the maximum compression of the gas spring during the opening and closing process is greater than the preset compression threshold, it is determined that the output parameter data set does not meet the preset gas spring design conditions.

[0033] According to one embodiment of the present application, the computing module is specifically used for:

[0034] Calculating the instantaneous length of the gas spring corresponding to the target angle based on the target angle;

[0035] The maximum compression amount of the gas spring during the opening and closing process is obtained according to the natural state length of the gas spring in the gas spring input parameter set and the instantaneous length of the gas spring.

[0036] According to the gas spring design device for the vehicle back door of the embodiment of the present application, the geometric elements and target parameters of the gas spring are obtained, and then the initial design strategy of the gas spring is determined, and then the target angle of the vehicle back door is obtained, and the control output parameters of the gas spring under various temperature conditions are calculated and recorded based on the target angle, and an output parameter data set under each temperature condition is generated, and when the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle back door, until the output parameter data set meets the preset gas spring design conditions, and the final design strategy of the gas spring is obtained. Thus, the problem that the calculation software of the related technology cannot directly design, check and analyze the gas spring, and the calculation complexity is increased due to the different torque directions provided by the gas spring under different working conditions is solved. The present application is based on the development of a three-dimensional design software with functions such as parametric design, management of parameter relationships and rules, optimization design, parameter value checking and conditional response, and adjusts the layout of the gas spring in real time according to the input geometric elements and parameters, outputs control parameters and completes the gas spring selection, and obtains the final gas spring layout through verification analysis, thereby improving the adaptability and reliability of the gas spring design.

[0037] The third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the gas spring design method for the vehicle tailgate as described in the above embodiment.

[0038] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the gas spring design method for the vehicle tailgate as described in the above embodiment.

[0039] A fifth aspect of the present application provides a computer program product, including a computer program, which is executed to implement the gas spring design method for the vehicle tailgate described in the above embodiment.

[0040] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0042] Figure 1 A flow chart of a method for designing a gas spring for a vehicle tailgate according to an embodiment of the present application;

[0043] Figure 2 It is a flow chart of the overall solution according to one embodiment of the present application;

[0044] Figure 3 This is a schematic diagram of a prompt box for a user to input a target angle according to an embodiment of the present application;

[0045] Figure 4 It is a schematic diagram of determining the coordinates of the lower hinge point of a gas spring according to one embodiment of the present application;

[0046] Figure 5 is a block diagram of an exemplary device for designing a gas spring for a vehicle tailgate according to an embodiment of the present application;

[0047] Figure 6 Schematic diagram of the structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0049] The following describes the gas spring design method, device, electronic device and medium for the vehicle tailgate of the embodiment of the present application with reference to the accompanying drawings. In view of the fact that the calculation software of the related technology mentioned in the above background technology cannot directly design, check and analyze the gas spring, and at the same time, the torque direction provided by the gas spring is different under different working conditions, thereby increasing the problem of calculation complexity, the present application provides a gas spring design method for the vehicle tailgate, in which the geometric elements and target parameters of the gas spring are obtained, and then the initial design strategy of the gas spring is determined, and then the target angle of the vehicle tailgate is obtained, and the control output parameters of the gas spring under various temperature conditions are calculated and recorded based on the target angle, and an output parameter data set under each temperature condition is generated, and when the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle tailgate, until the output parameter data set meets the preset gas spring design conditions, and the final design strategy of the gas spring is obtained. Thus, the problem that the calculation software of the related technology cannot directly design, check and analyze the gas spring, and the problem that the torque direction provided by the gas spring is different under different working conditions, thereby increasing the complexity of calculation, is solved. The present application is based on the development of a three-dimensional design software with functions such as parametric design, management of parameter relationships and rules, optimization design, parameter value checking and conditional response. The layout of the gas spring is adjusted in real time according to the input geometric elements and parameters, the control parameters are output and the gas spring selection is completed, and the final gas spring layout is obtained through verification analysis, thereby improving the adaptability and reliability of the gas spring design.

[0050] Specifically, before introducing the embodiments of the present application, the problems existing in the related art are first introduced. (1) The software used for the arrangement, verification, stroke and calculation of the opening and closing force of the gas spring in the related art are all traditional professional calculation software. This results in the inability of the related technical personnel who use the three-dimensional design software to design the opening and closing parts to directly perform a systematic stroke verification and opening and closing force calculation on the preliminary gas spring arrangement scheme; (2) Due to the specific rotation axis position of the opening and closing system, the position of the gas spring hinge point is different in the entire opening and closing stroke of the opening and closing system. The direction of the torque provided by the gas spring is different. Therefore, under the conditions of a specific gas spring, a specific temperature and a specific arrangement, it is difficult to use a function to express the torque of the gas spring on the rotation axis during the compression process and the torque of the gas spring on the rotation axis during the extension process; (3) The force value at the same position of the gas spring is different during the extension process and the compression process, that is, the force value and displacement curve of the gas spring during the compression process are different from the force value and displacement curve of the elongation process. However, in order to improve the scope of application of the three-dimensional design software, it is necessary to have the adaptability beyond the design range of the opening and closing parts angle. That is, in the single opening stroke of the opening and closing member, the gas spring may be compressed or extended, which makes it difficult to implement a specific gas spring, a specific opening and closing shaft, and a gas spring hinge point arrangement scheme. That is, in the opening or closing to a one-way stroke, it is difficult to use a function to express the torque of the gas spring; (4) In the gas spring arrangement scheme of the related art, the angle (i.e., geometric dead angle) between the gas spring in the closed state and several dead point lines of the door system (in the calculation surface, the line connecting the rotation center of the door and the upper hinge point of the gas spring) and the distance between the upper hinge point of the gas spring and the door axis have a great influence on the calculation results, and thus the positions of the upper and lower hinge points of the gas spring that affect the above parameters involve the X, Y, and Z coordinates of the lower hinge point of the gas spring, the length of the gas spring in the natural state, and the distance between the upper hinge point of the gas spring and the vehicle body. Among them, the distance between the upper hinge point of the gas spring and the vehicle body is generally directly controlled to the required size. However, in the process of adjusting the above parameters, obtaining the required geometric dead angle and the distance between the upper hinge point and the door axis involves relatively complex calculations, making this process difficult to implement.

[0051] Therefore, the embodiment of the present application is based on the development of a three-dimensional design software, which has the functions of parametric design, management of relationships and rules between parameters, optimization design, parameter value checking and conditional response, and the three-dimensional design software can directly assemble based on the surrounding environment parts, and can instantly adjust the layout of the gas spring according to the input geometric elements and parameters, output control parameters and complete the gas spring selection, and obtain the final gas spring layout plan through verification analysis, thereby improving the adaptability and reliability of the gas spring design, and making the visualization effect better.

[0052] Specifically, Figure 1 A schematic flow chart of a method for designing a gas spring for a vehicle tailgate provided in an embodiment of the present application.

[0053] like Figure 1 As shown, the gas spring design method for the vehicle back door includes the following steps:

[0054] In step S101, the geometric elements and target parameters of the gas spring input by the user are obtained, and the initial design strategy of the gas spring is determined based on the geometric elements and target parameters of the gas spring.

[0055] According to one embodiment of the present application, the user's gas spring input data is obtained, and the initial design strategy of the gas spring is determined based on the gas spring input data, including: obtaining the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set input by the user; calculating the gas spring body hinge point based on the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set, and determining the initial design strategy of the gas spring based on the gas spring body hinge point.

[0056] Specifically, Figure 2 As shown, the three-dimensional design software is mainly composed of the input geometric elements, process geometric elements, output geometric elements, target input parameters, process calculation parameters, output control parameters, specific formulas, rules, reactions, and inspection items of the gas spring. In the embodiment of the present application, first, the gas spring geometric elements and target parameters are input based on the user's usage requirements, wherein the gas spring geometric elements include the surface where the gas spring body hinge point is located, and the target parameters include the opening and closing system input parameter set, the gas spring input parameter set, and the system calculation control parameter set; secondly, after receiving the gas spring geometric elements and target parameters input by the user, the three-dimensional design software will calculate a point on the surface where the gas spring body hinge point is located, and the point is the gas spring body hinge point. After the gas spring body hinge point is calculated, the initial design strategy of the gas spring is determined.

[0057] Among them, the input parameter set of the opening and closing system mainly includes the flip angle of the back door in the open state, the coordinates of the rotation axis point, the coordinates of the lower fulcrum of the gas spring cover in the closed state, the coordinates of the center of mass of the door part in the closed state, the hand-opening force arm, the hand-closing force arm, the Y-plane control distance of the fulcrum on the body of the gas spring, the X-direction control of the surface where the fulcrum is located on the body, and the angle of the surface where the fulcrum is located on the body; the input parameter set of the gas spring mainly includes the natural state length of the gas spring, the minimum force F1 in the extension direction of the gas spring at 20℃, the maximum force F2 in the extension direction of the gas spring at 20℃, the minimum force F3 in the compression direction of the gas spring at 20℃, the maximum force F4 in the compression direction of the gas spring at 20℃, The position of force measuring point XF1 (XF3), the position of force measuring point XF2 (XF4), the force value difference between the same points of gas spring at 20℃ and -30℃, the force value difference between the same points of gas spring at 50℃ and 20℃ and the standard stroke of gas spring; the system calculation control parameter set mainly includes the instantaneous angle of the opening and closing process and the clearing of cached parameter values; the output geometric elements mainly include the schematic line of gas spring in the open state, the schematic line of gas spring in the closed state, the schematic line of the trajectory of the hinge point of the gas spring door body, the instantaneous schematic line of gas spring, the center of gravity of the door body in the closed state, the center of gravity of the door body in the open state, the instantaneous point of the center of gravity of the door body, the instantaneous schematic line of the door body weight, the opening and closing component shaft, etc.

[0058] It should be noted that after inputting the geometric elements and target parameters, the 3D design software will solve a point on the surface where the hinge point of the gas spring body is located, unless the distance between the surface where the hinge point of the gas spring body is located and the lower fulcrum of the gas spring cover is greater than the length of the gas spring. At this time, the 3D design software cannot solve the hinge point of the gas spring body. Therefore, the natural state length parameter of the gas spring in the target parameter input of the gas spring can be adjusted or the input geometric element "surface where the hinge point of the gas spring body is located" can be adjusted so that the 3D design software can solve a point on the surface where the hinge point of the gas spring body is located.

[0059] In step S102, based on the initial design strategy of the gas spring, the target angle of the vehicle tailgate is obtained, and the control output parameters of the gas spring under various temperature conditions are calculated based on the target angle. The calculation results are recorded to generate an output parameter data set under each temperature condition.

[0060] According to one embodiment of the present application, based on the initial design strategy of the gas spring, the target angle of the vehicle's tailgate is obtained, and based on the target angle, the control output parameters of the gas spring under various temperature conditions are calculated, including: calculating the first instantaneous door closing force, the first full-range maximum door closing force, the first instantaneous door opening force and the first full-range maximum door opening force of the gas spring under high temperature conditions based on the target angle of the vehicle's tailgate, the second instantaneous door closing force, the second full-range maximum door closing force, the second instantaneous door opening force and the second full-range maximum door opening force of the gas spring under normal temperature conditions, the third instantaneous door closing force, the third full-range maximum door closing force, the third instantaneous door opening force and the third full-range maximum door opening force of the gas spring under low temperature conditions, and the maximum compression of the gas spring during the opening and closing process.

[0061] According to one embodiment of the present application, the maximum compression of the gas spring during the opening and closing process includes: calculating the instantaneous length of the gas spring corresponding to the target angle based on the target angle; and obtaining the maximum compression of the gas spring during the opening and closing process according to the natural state length of the gas spring and the instantaneous length of the gas spring in the gas spring input parameter set.

[0062] Specifically, Figure 2 and Figure 3 As shown, in the embodiment of the present application, after obtaining the initial design strategy of the gas spring, the user can specify the target angle (i.e., the calculation angle) for further calculation and analysis. First, the user can Figure 3 Input the target angle in the display box in , and after receiving the target angle of the vehicle tailgate input by the user, calculate the control output parameters of the gas spring corresponding to various temperature conditions at the target angle based on the target angle. For example, the first instantaneous closing force, the first full-range maximum closing force, the first instantaneous door opening force and the first full-range maximum door opening force under high temperature conditions (for example, 50°C / 80°C) can be generated based on the target angle, the second instantaneous door closing force, the second full-range maximum door closing force, the second instantaneous door opening force and the second full-range maximum door opening force of the gas spring under normal temperature conditions (for example, 20°C), the third instantaneous door closing force, the third full-range maximum door closing force, the third instantaneous door opening force and the third full-range maximum door opening force of the gas spring under low temperature conditions (for example, -30°C) and the maximum compression of the gas spring during the opening and closing process corresponding to the target angle.

[0063] Among them, the high temperature working condition temperature value depends on the high temperature working condition temperature value provided by the gas spring, and the maximum compression amount of the gas spring during the opening and closing process is obtained according to the natural state length of the gas spring and the instantaneous length of the gas spring.

[0064] Furthermore, after calculating the control output parameters of the gas spring under various temperature conditions based on the target angle, the embodiment of the present application records the calculation results, that is, records the first instantaneous closing force, the first full-range maximum closing force, the first instantaneous opening force and the first full-range maximum opening force of the gas spring under high temperature conditions, the second instantaneous closing force, the second full-range maximum closing force, the second instantaneous opening force and the second full-range maximum opening force of the gas spring under normal temperature conditions, the third instantaneous closing force, the third full-range maximum closing force, the third instantaneous opening force and the third full-range maximum opening force of the gas spring under low temperature conditions, and the maximum compression of the gas spring during the opening and closing process, thereby generating an output parameter data set under each temperature condition.

[0065] In step S103, it is determined whether the output parameter data set meets the preset gas spring design conditions. If the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle tailgate until the output parameter data set meets the preset gas spring design conditions, thereby obtaining the final design strategy for the gas spring.

[0066] According to one embodiment of the present application, it is determined whether the output parameter data set meets the preset gas spring design conditions. If the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated, including: determining whether the target angle is greater than the preset angle threshold, or whether the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions are greater than the first preset closing force threshold, or whether the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low temperature conditions are less than the second preset closing force threshold, or whether the maximum compression of the gas spring during the opening and closing process is greater than the preset compression threshold; if the target angle is greater than the preset angle threshold, or the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions are greater than the first preset closing force threshold, or the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low temperature conditions are less than the second preset closing force threshold, or the maximum compression of the gas spring during the opening and closing process is greater than the preset compression threshold, then it is determined that the output parameter data set does not meet the preset gas spring design conditions.

[0067] Among them, the preset gas spring design conditions, preset angle threshold, first preset closing force threshold, second preset closing force threshold and preset compression threshold can all be set by technical personnel in this field according to the actual needs of the test, or can be obtained through computer simulation, and are not specifically limited here.

[0068] Specifically, after obtaining the output parameter data set under various temperature conditions, that is, the control output parameters, the present application needs to further evaluate the control output parameters to detect the rationality of the calculation of the control output parameters.

[0069] Specifically, the embodiment of the present application needs to determine whether the target angle input by the user is greater than a preset angle threshold, or whether the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions calculated according to the target angle are greater than the first preset closing force threshold, or whether the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low temperature conditions calculated according to the target angle are less than the second preset closing force threshold, or whether the maximum compression of the gas spring during the opening and closing process calculated according to the target angle is greater than the preset compression threshold; if the target angle is greater than the preset angle threshold, or the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions are greater than the first preset closing force threshold, Or the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low-temperature conditions are less than the second preset closing force threshold, or the maximum compression of the gas spring during the opening and closing process is greater than the preset compression threshold, it means that the calculated control output parameters do not meet the design requirements of the gas spring, that is, it is determined that the output parameter data set does not meet the preset gas spring design conditions. At this time, an alarm prompt is generated, such as an acoustic reminder device such as a vehicle horn or an optical reminder device such as a vehicle display screen, to remind the user to re-enter the target angle, and recalculate based on the newly input target angle, and output new control output parameters until the output parameter data set meets the preset gas spring design conditions, thereby obtaining the final design strategy for the gas spring.

[0070] Furthermore, after obtaining a final design strategy for a gas spring, the user may choose to clear the cache, so that the design strategy for the corresponding gas spring may be calculated based on the new target angle until the calculation of all required target angles is completed.

[0071] Furthermore, in order to solve the above-mentioned problem that it is difficult to use a function to express the torque of the gas spring on the rotating shaft during the compression process and to use a function to express the torque of the gas spring on the rotating shaft during the extension process under specific gas spring, specific temperature and specific arrangement conditions, the embodiment of the present application introduces a parameter (i.e., the gas spring torque direction parameter) based on the three-dimensional design software. The gas spring torque direction parameter detects and indicates the direction of the gas spring torque. The gas spring torque direction parameter is related to the two hinge points of the gas spring and the position of the opening and closing system rotating shaft. The direction of the gas spring force on the opening and closing system rotating shaft torque can be automatically determined. The solution of the gas spring torque direction is 1 or -1. After the gas spring torque direction parameter is introduced, under specific temperature, specific arrangement and specific gas spring conditions, the following is satisfied:

[0072] The torque of the compressed gas spring force on the rotating shaft = compressed gas spring force * gas spring force arm * gas spring torque direction parameter;

[0073] The torque of the extended gas spring force on the rotating shaft = extended gas spring force * gas spring force arm * gas spring torque direction parameter;

[0074] The compression gas spring force, extension gas spring force, gas spring force arm, and gas spring torque direction parameters all change with the angle of the opening and closing member.

[0075] Furthermore, in order to solve the problem that the gas spring may be compressed and extended during the single opening stroke of the opening and closing member, and thus the specific gas spring, the specific opening and closing shaft, and the gas spring hinge point arrangement scheme are difficult to implement, the three-dimensional design software of the embodiment of the present application introduces four parameters, mainly including a closing compression indication parameter, a closing extension indication parameter, an opening compression indication parameter, and an opening extension indication parameter. The above four parameters respectively detect and indicate the closing compression, closing extension, opening compression, and opening extension of the gas spring, and their solutions are all 1 or 0. After the above four parameters are introduced, under specific temperature, specific arrangement conditions, and specific gas spring working conditions, the calculation method is as follows:

[0076] Gas spring torque during closing process = closing compression indication parameter * compression gas spring force torque on the rotating shaft + closing extension indication parameter * extension gas spring force torque on the rotating shaft;

[0077] Gas spring torque during opening process = opening compression indication parameter * compression gas spring force torque on the rotating shaft + opening extension indication parameter * extension gas spring force torque on the rotating shaft.

[0078] Furthermore, if Figure 4 As shown, the embodiment of the present application is to solve the above-mentioned problem that the angle between the gas spring in the closed state and several dead point lines of the door system, the distance between the upper hinge point of the gas spring and the door axis, have a great influence on the calculation results, and thus affect the positions of the upper and lower hinge points of the gas spring that affect the above parameters. It involves the X, Y, and Z coordinates of the lower hinge point of the gas spring, the length of the gas spring in the natural state, and the distance between the upper hinge point of the gas spring and the vehicle body, which involves more complex calculations, making this process difficult to implement. The embodiment of the present application introduces the angle parameters between the axis of the gas spring in the closed state and the geometric dead point line, and the distance parameters between the upper hinge point of the gas spring and the door shaft based on the three-dimensional design software, and then introduces the optimization design task. When the calculation results of the initial design strategy do not meet the conditions ( For example, if the door system has no self-locking stroke due to a small geometric dead angle, or the gas spring force requirement is too large due to a small distance between the upper hinge point and the door axis, the user can set the target geometric dead angle through the optimization design task "Optimize the angle between the gas spring in the closed state and the geometric dead point line", and find the corresponding X, Y, and Z coordinates of the lower hinge point of the gas spring. If there is no solution in the optimization result, find the variable to increase the constraint parameters of the line where the upper hinge point of the gas spring is located. If there is still no solution after increasing the constraint parameters of the line where the upper hinge point of the gas spring is located, increase the variable gas spring natural state length. Therefore, the user can set the target distance through the optimization design task "Optimize the size of the upper fulcrum from the door axis" and find the corresponding X, Y, and Z coordinates of the lower hinge point of the gas spring.

[0079] Therefore, the embodiments of the present application can simplify the process of calculating the actual compression stroke of the gas spring, the opening and closing force calculation process, and the gas spring arrangement adjustment process for technical personnel in the field when designing the opening and closing part assist mechanism for different gas spring arrangements, thereby improving the adaptability and reliability of the gas spring design.

[0080] According to the gas spring design method for the vehicle back door of the embodiment of the present application, the geometric elements and target parameters of the gas spring are obtained, and then the initial design strategy of the gas spring is determined, and then the target angle of the vehicle back door is obtained, and the control output parameters of the gas spring under various temperature conditions are calculated and recorded based on the target angle, and an output parameter data set under each temperature condition is generated, and when the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle back door, until the output parameter data set meets the preset gas spring design conditions, and the final design strategy of the gas spring is obtained. Thus, the problem that the calculation software of the related technology cannot directly design, check and analyze the gas spring, and the calculation complexity is increased due to the different torque directions provided by the gas spring under different working conditions is solved. The present application is based on the development of a three-dimensional design software with functions such as parametric design, management of parameter relationships and rules, optimization design, parameter value checking and conditional response, and adjusts the layout of the gas spring in real time according to the input geometric elements and parameters, outputs control parameters and completes the gas spring selection, and obtains the final gas spring layout through verification analysis, thereby improving the adaptability and reliability of the gas spring design.

[0081] Next, a gas spring design device for a vehicle tailgate according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0082] Figure 5 It is a block diagram of a gas spring design device for a vehicle tailgate according to an embodiment of the present application.

[0083] like Figure 5 As shown, the gas spring design device 10 for the vehicle tailgate includes: an acquisition module 100 , a calculation module 200 and an adjustment module 300 .

[0084] The acquisition module 100 is used to acquire the geometric elements and target parameters of the gas spring input by the user, and determine the initial design strategy of the gas spring based on the geometric elements and target parameters of the gas spring;

[0085] The calculation module 200 is used to obtain the target angle of the vehicle tailgate based on the initial design strategy of the gas spring, calculate the control output parameters of the gas spring under various temperature conditions based on the target angle, and record the calculation results to generate an output parameter data set under each temperature condition;

[0086] The adjustment module 300 is used to determine whether the output parameter data set meets the preset gas spring design conditions. If the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle tailgate until the output parameter data set meets the preset gas spring design conditions, thereby obtaining the final design strategy of the gas spring.

[0087] According to an embodiment of the present application, the acquisition module 100 is specifically used for:

[0088] Obtain the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set input by the user;

[0089] The gas spring body hinge point is calculated based on the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set, and the initial design strategy of the gas spring is determined based on the gas spring body hinge point.

[0090] According to one embodiment of the present application, the computing module 200 is specifically configured to:

[0091] Based on the target angle of the vehicle's tailgate, calculate the first instantaneous closing force, first full-range maximum closing force, first instantaneous door opening force and first full-range maximum door opening force of the gas spring under high temperature conditions, the second instantaneous door closing force, second full-range maximum door closing force, second instantaneous door opening force and second full-range maximum door opening force of the gas spring under normal temperature conditions, the third instantaneous door closing force, third full-range maximum door closing force, third instantaneous door opening force and third full-range maximum door opening force of the gas spring under low temperature conditions and the maximum compression of the gas spring during the opening and closing process.

[0092] According to one embodiment of the present application, the adjustment module 300 is specifically used for:

[0093] Determine whether the target angle is greater than a preset angle threshold, or whether the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions are greater than the first preset closing force threshold, or whether the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low temperature conditions are less than the second preset closing force threshold, or whether the maximum compression of the gas spring during the opening and closing process is greater than the preset compression threshold;

[0094] If the target angle is greater than the preset angle threshold, or the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions are greater than the first preset closing force threshold, or the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low temperature conditions are less than the second preset closing force threshold, or the maximum compression of the gas spring during the opening and closing process is greater than the preset compression threshold, it is determined that the output parameter data set does not meet the preset gas spring design conditions.

[0095] According to one embodiment of the present application, the computing module 200 is specifically configured to:

[0096] Calculate the instantaneous length of the gas spring corresponding to the target angle based on the target angle;

[0097] The maximum compression amount of the gas spring during the opening and closing process is obtained according to the natural state length of the gas spring and the instantaneous length of the gas spring in the gas spring input parameter set.

[0098] According to the gas spring design device for the vehicle back door of the embodiment of the present application, the geometric elements and target parameters of the gas spring are obtained, and then the initial design strategy of the gas spring is determined, and then the target angle of the vehicle back door is obtained, and the control output parameters of the gas spring under various temperature conditions are calculated and recorded based on the target angle, and an output parameter data set under each temperature condition is generated, and when the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle back door, until the output parameter data set meets the preset gas spring design conditions, and the final design strategy of the gas spring is obtained. Thus, the problem that the calculation software of the related technology cannot directly design, check and analyze the gas spring, and the calculation complexity is increased due to the different torque directions provided by the gas spring under different working conditions is solved. The present application is based on the development of a three-dimensional design software with functions such as parametric design, management of parameter relationships and rules, optimization design, parameter value checking and conditional response, and adjusts the layout of the gas spring in real time according to the input geometric elements and parameters, outputs control parameters and completes the gas spring selection, and obtains the final gas spring layout through verification analysis, thereby improving the adaptability and reliability of the gas spring design.

[0099] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0100] A memory 601 , a processor 602 , and a computer program stored in the memory 601 and executable on the processor 602 .

[0101] When the processor 602 executes the program, the gas spring design method for the vehicle tailgate provided in the above embodiment is implemented.

[0102] Furthermore, the electronic device further comprises:

[0103] The communication interface 603 is used for communication between the memory 601 and the processor 602 .

[0104] The memory 601 is used to store computer programs that can be executed on the processor 602 .

[0105] The memory 601 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0106] If the memory 601, the processor 602 and the communication interface 603 are implemented independently, the communication interface 603, the memory 601 and the processor 602 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0107] Optionally, in a specific implementation, if the memory 601, the processor 602 and the communication interface 603 are integrated on a chip, the memory 601, the processor 602 and the communication interface 603 can communicate with each other through an internal interface.

[0108] The processor 602 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0109] This embodiment also provides a computer-readable storage medium having a computer program stored thereon, and when the program is executed by a processor, the above-mentioned gas spring design method for a vehicle tailgate is implemented.

[0110] This embodiment also provides a computer program product, including a computer program, which is executed to implement the gas spring design method for the vehicle tailgate of the above embodiment.

[0111] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0112] In addition, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0113] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0114] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or otherwise processing in a suitable manner if necessary, and then stored in a computer memory.

[0115] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0116] A person skilled in the art may understand that all or part of the steps in the above-mentioned embodiment method may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0117] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0118] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for designing a gas spring for a vehicle back door, characterized in that: The following steps are involved: Acquire geometric elements and target parameters of the gas spring input by a user, and determine an initial design strategy of the gas spring based on the geometric elements and target parameters of the gas spring; Based on the initial design strategy of the gas spring, a target angle of the vehicle tailgate is obtained, and based on the target angle, control output parameters of the gas spring under various temperature conditions are calculated, and the calculation results are recorded to generate an output parameter data set under each temperature condition; Determine whether the output parameter data set satisfies the preset gas spring design conditions. If the output parameter data set does not satisfy the preset gas spring design conditions, generate an alarm prompt to remind the user to re-enter the target angle of the vehicle tailgate until the output parameter data set satisfies the preset gas spring design conditions, thereby obtaining a final design strategy for the gas spring.

2. The method according to claim 1, characterized in that The obtaining of gas spring input data from a user and determining an initial design strategy for the gas spring based on the gas spring input data includes: Obtain the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set input by the user; The gas spring body hinge point is calculated based on the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set, and the initial design strategy of the gas spring is determined based on the gas spring body hinge point.

3. The method according to claim 1, characterized in that The initial design strategy based on the gas spring, obtaining the target angle of the vehicle tailgate, and calculating the control output parameters of the gas spring under various temperature conditions based on the target angle include: Based on the target angle of the vehicle tailgate, the first instantaneous door closing force, the first full-range maximum door closing force, the first instantaneous door opening force and the first full-range maximum door opening force of the gas spring under high temperature conditions are calculated, as well as the second instantaneous door closing force, the second full-range maximum door closing force, the second instantaneous door opening force and the second full-range maximum door opening force of the gas spring under normal temperature conditions, the third instantaneous door closing force, the third full-range maximum door closing force, the third instantaneous door opening force and the third full-range maximum door opening force of the gas spring under low temperature conditions and the maximum compression of the gas spring during the opening and closing process.

4. The method according to claim 1 or 3, characterized in that: The determining whether the output parameter data set meets the preset gas spring design conditions, and generating an alarm prompt if the output parameter data set does not meet the preset gas spring design conditions, includes: Determine whether the target angle is greater than a preset angle threshold, or whether the first instantaneous closing force and the first full-range maximum closing force of the gas spring under high temperature conditions are greater than a first preset closing force threshold, or whether the third instantaneous closing force and the third full-range maximum closing force of the gas spring under low temperature conditions are less than a second preset closing force threshold, or whether the maximum compression of the gas spring during the opening and closing process is greater than a preset compression threshold; If the target angle is greater than the preset angle threshold, or the first instantaneous closing force and the first full-range maximum closing force of the gas spring under the high temperature condition are greater than the first preset closing force threshold, or the third instantaneous closing force and the third full-range maximum closing force of the gas spring under the low temperature condition are less than the second preset closing force threshold, or the maximum compression of the gas spring during the opening and closing process is greater than the preset compression threshold, it is determined that the output parameter data set does not meet the preset gas spring design conditions.

5. The method according to claim 3, characterized in that: The maximum compression of the gas spring during the opening and closing process includes: Calculating the instantaneous length of the gas spring corresponding to the target angle based on the target angle; The maximum compression amount of the gas spring during the opening and closing process is obtained according to the natural state length of the gas spring in the gas spring input parameter set and the instantaneous length of the gas spring.

6. A gas spring design device for a vehicle back door, characterized in that: include: An acquisition module, used for acquiring geometric elements and target parameters of the gas spring input by a user, and determining an initial design strategy of the gas spring based on the geometric elements and target parameters of the gas spring; a calculation module, for obtaining a target angle of the vehicle tailgate based on an initial design strategy of the gas spring, calculating control output parameters of the gas spring under various temperature conditions based on the target angle, and recording the calculation results to generate an output parameter data set under each temperature condition; An adjustment module is used to determine whether the output parameter data set meets the preset gas spring design conditions. If the output parameter data set does not meet the preset gas spring design conditions, an alarm prompt is generated to remind the user to re-enter the target angle of the vehicle tailgate until the output parameter data set meets the preset gas spring design conditions, thereby obtaining a final design strategy for the gas spring.

7. The device according to claim 6, characterized in that The acquisition module is specifically used for: Obtain the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set input by the user; The gas spring body hinge point is calculated based on the surface where the gas spring body hinge point is located, the opening and closing system input parameter set, the gas spring input parameter set and the system calculation control parameter set, and the initial design strategy of the gas spring is determined based on the gas spring body hinge point.

8. The device according to claim 6, characterized in that The computing module is specifically used for: Based on the target angle of the vehicle tailgate, the first instantaneous door closing force, the first full-range maximum door closing force, the first instantaneous door opening force and the first full-range maximum door opening force of the gas spring under high temperature conditions are calculated, as well as the second instantaneous door closing force, the second full-range maximum door closing force, the second instantaneous door opening force and the second full-range maximum door opening force of the gas spring under normal temperature conditions, the third instantaneous door closing force, the third full-range maximum door closing force, the third instantaneous door opening force and the third full-range maximum door opening force of the gas spring under low temperature conditions and the maximum compression of the gas spring during the opening and closing process.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the gas spring design method for a vehicle tailgate as described in any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the gas spring design method for a vehicle tailgate as described in any one of claims 1 to 5.

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