A design method and system for a water cut-off surface of a driver's side lower vision

Abstract

The present application relates to a design method and a design system for a driver's side lower vision water cut-off surface, including: obtaining the driver's side lower vision water cut-off surface based on the first ergonomic parameter of the vehicle model to be developed; obtaining the first mapping relationship between the driver's right lower vision angle and the height of the driver's side lower vision water cut in the Z direction from the R point in the vehicle model to be developed based on the driver's side lower vision water cut-off surface; obtaining the second ergonomic parameter based on the target value of the third ergonomic parameter of the known vehicle model; obtaining the second mapping relationship between the driver's right lower vision angle and the height of the driver's side lower vision water cut in the Z direction from the R point based on the first mapping relationship, the first ergonomic parameter and the second ergonomic parameter; determining the driver's side lower vision water cut-off surface based on the second mapping relationship and the target value of the driver's right lower vision angle. The present application can solve the problem of low efficiency in water cut design and development.

Description

Technical Field

[0001] The present application relates to the technical field of automobile design, and in particular to a design method and a design system for a water cut-off surface of a driver's side lower field of vision. Background Art

[0002] The beltline of a car is the line connecting the side windows. The height of the beltline has a great influence on the style and effect of the car. The beltline of the side styling of the car body divides the upper and lower proportions of the car into two parts, which plays a vital role in the design of the car's appearance. The current development trend of exterior styling is that the beltline position is getting higher and higher, and the beltline is tilted backward and upward, which provides better privacy for passengers.

[0003] During the design process of the section plan, the front water-cut main section repeatedly adjusts the water-cut height and the side glass surface to check whether the driver's side downward field of vision meets the target requirements. If a high water-cut is used to meet the design requirements, the driver's side downward field of vision will be reduced, affecting the safety and comfort of riding, and even causing customer complaints.

[0004] So it's about balancing the styling with the driver's side downward vision.

[0005] However, the human body has many joints with many degrees of freedom, and many adjustable sizes and angles. Many ergonomic parameters influence each other, and actual design is restricted by comfort, visibility, convenience and relevant regulations. It is difficult to quickly and efficiently complete the setting of most key parameters. It is usually necessary to repeatedly adjust multiple parameters in conjunction to meet all design requirements, which significantly reduces development efficiency. Summary of the invention

[0006] The embodiment of the present application provides a design method and a design system for a water cut section of a driver's side lower field of view, so as to solve the problem of low efficiency of water cut design and development in the related art.

[0007] In a first aspect, a method for designing a driver's side lower vision water cut-off surface is provided, which comprises the following steps:

[0008] Based on the first ergonomic parameters of the vehicle to be developed, obtain the water cut-off section of the driver's side lower vision;

[0009] Based on the driver's side lower vision water section, obtaining a first mapping relationship between the driver's right lower vision angle γ with respect to the second ergonomic parameter and the height h of the driver's side lower vision water section from the R point in the Z direction in the vehicle model to be developed;

[0010] Based on a target value of a third ergonomic parameter of a known vehicle type, obtaining the second ergonomic parameter;

[0011] Based on the first mapping relationship, the first ergonomic parameter and the second ergonomic parameter, a second mapping relationship between the driver's right lower visual angle γ and the height h of the driver's side lower visual watershed from the R point in the Z direction is obtained;

[0012] Based on the second mapping relationship and the target value of the driver's right lower field of view angle γ, the driver's side lower field of view water cut-off plane is determined.

[0013] In some embodiments, the first ergonomic parameter includes: the height H of the driver's point V2 from point R in the Z direction, the standard water section, the front shoulder space requirement, and the height h of the driver's side lower vision water section from point R in the Z direction.

[0014] In some embodiments, based on the first ergonomic parameters of the vehicle model to be developed, obtaining the driver's side lower vision water cut-off plane includes the following steps:

[0015] Fit the first ergonomic parameters of the vehicle to be developed to the front door glass;

[0016] Add the front door sheet metal, front door guard plate, and glass lifter, and complete the watertight section drawing of the driver's side lower vision.

[0017] In some embodiments, the tangent point between the driver's point V2 and the left side of the driver's side lower visual field water section is defined as point A, and the tangent point between the driver's point V2 and the right side of the driver's side lower visual field water section is defined as point B;

[0018] The second ergonomic parameter includes: a distance a between point A or point B and the midpoint between point A and point B in the Y direction.

[0019] In some embodiments, the third ergonomic parameter includes: the distance L1 between point A or point B and the corresponding front door glass, the thickness of the front door glass L2, the distance L3 between the front door glass and the inner water cut reinforcement plate, the cavity size L4 of the inner water cut reinforcement plate, the distance L5 between the front door guard plate and the sheet metal, the thickness L6 of the front door guard plate, the distance D between point A or point B and the outermost corresponding point of the front door guard plate, the front shoulder space requirement a2, and the inclination angle θ of the lower side glass of the front door water cut.

[0020] In some embodiments, a target value of a distance L1 between point A or point B and the corresponding front door glass is greater than or equal to 10 mm;

[0021] The target value of the front door glass thickness L2 is 4 to 5 mm;

[0022] The target value of the distance L3 between the front door glass and the inner water-cut reinforcement plate is greater than or equal to 10 mm;

[0023] The target value of the inner water shear reinforcement plate cavity size L4 is greater than or equal to 30mm;

[0024] The target value of the distance L5 between the front door guard plate and the sheet metal is greater than or equal to 5mm;

[0025] The target value of the front door guard plate thickness L6 is greater than or equal to 15mm;

[0026] The target value of the distance D between point A or point B and the corresponding point on the outermost side of the front door guard plate is greater than or equal to 50 mm;

[0027] The target value of a2 for the front shoulder space is required to be greater than or equal to 1400mm;

[0028] The target value of the inclination angle θ of the glass on the lower side of the front door water cut is 10°~15°.

[0029] In some embodiments, based on the target value of the distance L1 between point A or point B and the corresponding front door glass, the target value of the front door glass thickness L2, the target value of the distance L3 between the front door glass and the inner water cut reinforcement plate, the target value of the inner water cut reinforcement plate cavity size L4, the target value of the distance L5 between the front door guard plate and the sheet metal, the target value of the thickness L6 of the front door guard plate, the target value of the distance D between point A or point B and the outermost corresponding point of the front door guard plate, the target value of the front shoulder space requirement a2, and the target value of the inclination angle θ of the lower side glass of the front door water cut, the distance a of point A or point B from the midpoint of point A and point B in the Y direction is obtained.

[0030] In some embodiments, determining the driver's side lower visual field water cut-off plane based on the second mapping relationship and the target value of the driver's right lower visual field angle γ comprises the following steps:

[0031] Based on the second mapping relationship, find the driver's right lower visual angle γ that is not less than the target value of the driver's right lower visual angle γ;

[0032] The height h of the driver's side lower field of vision water section with the maximum value from point R in the Z direction is taken as the design value, and substituted into the first ergonomic parameter of the vehicle model to be developed to obtain the final driver's side lower field of vision water section plane.

[0033] In some embodiments, the target value of the driver's right lower field of view angle γ is greater than or equal to 4°.

[0034] In a second aspect, a design system for a driver's side lower vision water cut-off surface is provided, comprising:

[0035] The first module is used to obtain a water cut-off section of the driver's side lower vision field based on a first ergonomic parameter of the vehicle model to be developed;

[0036] The second module is used to obtain, based on the driver's side lower visual field water section, a first mapping relationship between the driver's right lower visual field angle γ and the height h of the driver's side lower visual field water section from the R point in the Z direction in the vehicle model to be developed, with respect to the second ergonomic parameter;

[0037] A third module is used to obtain the second ergonomic parameter based on a target value of a third ergonomic parameter of a known vehicle type;

[0038] A fourth module is used to obtain a second mapping relationship between the driver's right lower visual angle γ and the height h of the driver's side lower visual watershed from the R point in the Z direction based on the first mapping relationship, the first ergonomic parameter and the second ergonomic parameter;

[0039] The fifth module is used to determine the driver's side lower field of view water cut-off plane based on the second mapping relationship and the target value of the driver's right lower field of view angle γ.

[0040] The beneficial effects of the technical solution provided by this application include:

[0041] The embodiment of the present application provides a design method and a design system for a driver's side lower field of vision water cut-off surface. Based on a first ergonomic parameter of a vehicle model to be developed, the driver's side lower field of vision water cut-off surface is obtained. Based on a target value of a third ergonomic parameter of a known vehicle model, the second ergonomic parameter is obtained. Then, based on the driver's side lower field of vision water cut-off surface, a first mapping relationship between the driver's right lower field of vision angle γ with respect to the second ergonomic parameter and the height h of the driver's side lower field of vision water cut-off surface from a point R in the Z direction in the vehicle model to be developed is obtained. The first mapping relationship, the first ergonomic parameter and the second ergonomic parameter are used to obtain a second mapping relationship between the driver's right lower field of vision angle γ with respect to the height h of the driver's side lower field of vision water cut-off surface from a point R in the Z direction. The driver's side lower field of vision water cut-off surface is determined based on the second mapping relationship, with the target value of the driver's right lower field of vision angle γ as a constraint. The present application determines the mapping relationship between the driver's right lower field of vision angle γ and the height h of the driver's side lower field of vision watershed from point R in the Z direction through a variety of ergonomic parameters, and combines the regulatory requirements for the driver's side downward field of vision to determine the height h of the driver's side lower field of vision watershed from point R in the Z direction, taking into account the styling style and field of vision requirements, and incorporating the target values ​​of the ergonomic parameters of known vehicle models into the calculation, which can provide a styling style support point, thereby reducing the repeated communication and coordination process of the styling in the early CAS stage, and improving the watershed design and development efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 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.

[0043] Figure 1 A flow chart of a design method for a driver's side lower vision water cut-off surface provided in an embodiment of the present application;

[0044] Figure 2 A schematic diagram of a water cut section of the driver's side lower field of view provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of a dimension chain for calculating the distance a between point A or point B and the midpoint between point A and point B in the Y direction provided in an embodiment of the present application;

[0046] Figure 4 A curve relationship diagram of the driver's right lower field of view angle γ and the height h of the driver's side lower field of view watershed from point R in the Z direction provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] 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.

[0048] The embodiment of the present application provides a method for designing a water cut section surface of the driver's side lower field of vision, which can solve the problem of low efficiency of water cut design and development in related technologies.

[0049] See also Figure 1 , Figure 2 Figure 3 and Figure 4 As shown, the embodiment of the present application provides a method for designing a driver's side lower vision water cut-off surface, which includes the following steps:

[0050] 101: Based on the first ergonomic parameters of the vehicle model to be developed, obtain the water cut-off plane of the driver's side lower field of vision.

[0051] When developing and designing a vehicle model, some parameters are known quantities and are not optimized during the design adjustment process, while some parameters are unknown quantities and need to be continuously optimized during the design adjustment process.

[0052] In an embodiment, the first ergonomic parameters include: the height H of the driver's point V2 from point R in the Z direction, the water section standard section, the front shoulder space requirement, and the height h of the driver's side lower vision water section from point R in the Z direction.

[0053] Among them, during development and design, the driver's V2 point and R point are determined in advance and are the desired data for the vehicle model to be developed, that is, the driver's V2 point and R point are known quantities. After knowing the driver's V2 point and R point, the height H of the driver's V2 point from the R point in the Z direction determined by the driver's V2 point and R point is also a known quantity, and no adjustment or optimization will be performed thereafter.

[0054] The above-mentioned water-cut standard section adopts the water-cut section size parameters of known vehicle models, but it is only used as an auxiliary to draw the parameters of the water-cut section of the driver's side lower field of view. That is to say, the value of the above-mentioned water-cut standard section is only given the data of existing known vehicle models and used as the initial value to assist in drawing the water-cut section of the driver's side lower field of view, which will be adjusted and optimized afterwards.

[0055] The above-mentioned front shoulder space requirement adopts the target value of the front shoulder space requirement of the known vehicle model as an aid to draw the parameters of the driver's side lower field of vision water cut-off surface. That is to say, the value of the above-mentioned front shoulder space requirement is assigned from the target value of the front shoulder space requirement of the known vehicle model, and no adjustment or optimization will be performed thereafter.

[0056] The height h of the above-mentioned driver's side lower field of view water section from point R in the Z direction can be supplemented by the value of the height of the driver's side lower field of view water section from point R in the Z direction of the known vehicle, so as to assist in drawing the driver's side lower field of view water section surface, which will be adjusted and optimized afterwards.

[0057] Of course, the height h of the above-mentioned driver's side lower field of vision watershed from point R in the Z direction can adopt the developer's experience value, that is, the height h of the above-mentioned driver's side lower field of vision watershed from point R in the Z direction is assigned an experience value to assist in drawing the driver's side lower field of vision watershed section, which will be adjusted and optimized afterwards.

[0058] The length direction of the vehicle is defined as the X direction, the width direction of the vehicle is defined as the Y direction, and the height direction of the vehicle is defined as the Z direction.

[0059] And point R is the seat reference point, a hip point on a specified seat position. There is only one seat reference point for each seat.

[0060] Point V2 refers to the driver's field of vision observation point, which is related to the driver's R point and the designed seat back angle.

[0061] In the above step 101, based on the first ergonomic parameter of the vehicle model to be developed, the water cut-off plane of the driver's side lower vision field is obtained, which specifically includes the following steps:

[0062] 201: Fit the first ergonomic parameters of the vehicle model to be developed to the front door glass.

[0063] 202: Add the front door sheet metal, front door guard plate, and glass lifter, and complete the watertight section drawing of the driver's side lower vision.

[0064] From the above step 101, it can be seen that by using the driver's point V2 and point R that have been determined for the vehicle model to be developed, the height H of the driver's point V2 from the point R in the Z direction can be determined. At the same time, the parameters such as the standard water section of the vehicle model to be developed, the front shoulder space requirements, and the height h of the driver's side lower field of view water section from the point R in the Z direction are assigned, so that the driver's side lower field of view water section can be drawn.

[0065] 102: Based on the driver's side lower field of view water cut section, obtain a first mapping relationship between the driver's right lower field of view angle γ with respect to the second ergonomic parameter and the height h of the driver's side lower field of view water cut section from the R point in the Z direction in the vehicle model to be developed.

[0066] Since the driver's side lower field of vision water cut-off surface has been drawn in the above step 101, in step 102, based on the driver's side lower field of vision water cut-off surface, the first mapping relationship between the driver's right lower field of vision angle γ with respect to the second ergonomic parameter and the height h of the driver's side lower field of vision water cut-off surface from point R in the Z direction can be obtained.

[0067] See also Figure 2 As shown, the point of intersection between the driver's point V2 and the left side of the driver's lower side visual field water section is defined as point A, and the point of intersection between the driver's point V2 and the right side of the driver's lower side visual field water section is defined as point B; obviously, point A and point B are symmetrical about the ZX plane.

[0068] The second ergonomic parameter includes: a distance a between point A or point B and the midpoint between point A and point B in the Y direction.

[0069] The driver's right lower field of view angle γ is measured in a plane passing through the driver's V2 point and parallel to the ZY plane.

[0070] from Figure 2 It can be seen that according to the trigonometric function relationship, the first mapping relationship can be obtained: γ = arctan (Hh) / (a ​​+ b).

[0071] Where b is the distance between the driver's point V2 in the Y direction and the midpoint between points A and B. Since the height H of the driver's point V2 in the Z direction from point R is a known quantity, and from the attached Figure 2It can be seen that the distance b from the driver's point V2 in the Y direction to the midpoint of points A and B is equal to the value of the driver's point V2 on the Y coordinate, that is, the distance b from the driver's point V2 in the Y direction to the midpoint of points A and B can be determined by the coordinates of the driver's point V2, which is a known quantity. Therefore, it is necessary to continue to calculate the second ergonomic parameter a to obtain the mapping relationship between the driver's right lower field of view angle γ and the height h of the driver's side lower field of view watershed from point R in the Z direction.

[0072] 103: Based on a target value of a third ergonomic parameter of a known vehicle type, obtain the second ergonomic parameter.

[0073] The second ergonomic parameters can be calculated based on the dimension chain, combined with Figure 3 As shown, the distance a between the above point A or point B and the midpoint between point A and point B in the Y direction can be obtained as follows:

[0074] a=a1+a2,a1=L*cosθ-D*sinθ,L=L1+L2+L3+L4+L5+L6

[0075] Among them, L1 is the distance between point A or point B and the corresponding front door glass, L2 is the thickness of the front door glass, L3 is the distance between the front door glass and the inner water cut reinforcement plate, L4 is the cavity size of the inner water cut reinforcement plate, L5 is the distance between the front door guard plate and the sheet metal, L6 is the thickness of the front door guard plate, D is the distance between point A or point B and the outermost corresponding point of the front door guard plate, a2 is the front shoulder space requirement, and θ is the inclination angle of the glass below the front door water cut.

[0076] That is to say, the third ergonomic parameters include: the distance L1 between point A or point B and the corresponding front door glass, the thickness of the front door glass L2, the distance L3 between the front door glass and the inner water cut reinforcement plate, the cavity size L4 of the inner water cut reinforcement plate, the distance L5 between the front door guard plate and the sheet metal, the thickness L6 of the front door guard plate, the distance D between point A or point B and the outermost corresponding point of the front door guard plate, the front shoulder space requirement a2, and the inclination angle θ of the glass below the front door water cut.

[0077] Through a large number of benchmarks with known models and subjective and objective research, in the early stage of water cut-off surface design, the relevant parameter target values ​​of point A and a1 closest to the interior of the vehicle were obtained according to the above formula, as follows:

[0078] The target value of the distance L1 between point A or point B and the corresponding front door glass is greater than or equal to 10 mm;

[0079] The target value of the front door glass thickness L2 is 4 to 5 mm;

[0080] The target value of the distance L3 between the front door glass and the inner water-cut reinforcement plate is greater than or equal to 10 mm;

[0081] The target value of the inner water shear reinforcement plate cavity size L4 is greater than or equal to 30mm;

[0082] The target value of the distance L5 between the front door guard plate and the sheet metal is greater than or equal to 5mm;

[0083] The target value of the front door guard plate thickness L6 is greater than or equal to 15mm;

[0084] The target value of the distance D between point A or point B and the corresponding point on the outermost side of the front door guard plate is greater than or equal to 50 mm;

[0085] The target value of a2 for the front shoulder space is required to be greater than or equal to 1400mm;

[0086] The target value of the inclination angle θ of the glass on the lower side of the front door water cut is 10°~15°.

[0087] Therefore, based on the target value of the distance L1 between point A or point B and the corresponding front door glass, the target value of the front door glass thickness L2, the target value of the distance L3 between the front door glass and the inner water cut reinforcement plate, the target value of the inner water cut reinforcement plate cavity size L4, the target value of the distance L5 between the front door guard plate and the sheet metal, the target value of the front door guard plate thickness L6, the target value of the distance D between point A or point B and the outermost corresponding point of the front door guard plate, the target value of the front shoulder space requirement a2, and the target value of the inclination angle θ of the lower side glass of the front door water cut, the distance a between point A or point B in the Y direction from the midpoint of point A and point B can be calculated.

[0088] In addition, it can be seen from the first mapping relationship above that in order to have a larger field of view, the smaller the distance a between point A or point B in the Y direction and the midpoint between point A and point B, the better. Therefore, when using the target value of the third ergonomic parameter of a known vehicle model to calculate the distance a between point A or point B in the Y direction and the midpoint between point A and point B, the numerical value assigned to the third ergonomic parameter should be able to calculate a value of a as small as possible.

[0089] 104: Based on the first mapping relationship, the first ergonomic parameter, and the second ergonomic parameter, obtain a second mapping relationship between the driver's right lower visual angle γ and the height h of the driver's side lower visual watershed from the R point in the Z direction;

[0090] Specifically, according to the first mapping relationship γ=arctan(Hh) / (a+b), combined with the height H of the driver's point V2 from the point R in the Z direction, a=a1+a2, a1=L*cosθ-D*sinθ, L=L1+L2+L3+L4+L5+L6, the second mapping relationship can be obtained:

[0091] γ=arctan(Hh) / [(L1+L2+L3+L4+L5+L6)*cosθ-D*sinθ+a2+b]

[0092] Among them, the height H of the driver's point V2 from point R in the Z direction, the distance L1 between point A or point B and the corresponding front door glass, the thickness L2 of the front door glass, the distance L3 between the front door glass and the inner water cut reinforcement plate, the cavity size L4 of the inner water cut reinforcement plate, the distance L5 between the front door guard plate and the sheet metal, the thickness L6 of the front door guard plate, the distance D between point A or point B and the outermost corresponding point of the front door guard plate, the front shoulder space requirement a2, the inclination angle θ of the lower side glass of the front door water cut, and the distance b between the driver's point V2 in the Y direction and the midpoint of point A and point B are all known quantities. Therefore, in the above second mapping relationship, the independent variable is only the height h of the driver's side lower field of view water cut from point R in the Z direction.

[0093] 105: Determine a driver's side lower field of view water cut-off plane based on the second mapping relationship and a target value of the driver's right lower field of view angle γ.

[0094] In the above step 105, based on the second mapping relationship and the target value of the right lower visual angle γ of the driver, determining the driver's side lower visual field water cut-off plane specifically includes the following steps:

[0095] 301: Based on the second mapping relationship, find the driver's right lower field of view angle γ that is not less than the target value of the driver's right lower field of view angle γ.

[0096] Specifically, see Figure 4 As shown, the height h of the driver's side lower visual field watershed from point R in the Z direction in the second mapping relationship can be assigned multiple times to obtain a corresponding series of driver's right lower visual field angles γ, and a curve relationship diagram of the driver's right lower visual field angle γ with respect to the height h of the driver's side lower visual field watershed from point R in the Z direction is drawn. From the curve relationship diagram, one or more driver's right lower visual field angles γ that are not less than the target value of the driver's right lower visual field angle γ can be found.

[0097] 302: The height h of the driver's side lower visual field water section with the maximum value from the R point in the Z direction is used as the design value, and is substituted into the first ergonomic parameter of the vehicle model to be developed to obtain the final driver's side lower visual field water section plane.

[0098] Among them, the specific values ​​of the third ergonomic parameters of the known vehicle model used to calculate the second ergonomic parameters a and b, namely, the distance L1 between point A or point B and the corresponding front door glass, the thickness L2 of the front door glass, the distance L3 between the front door glass and the inner water cut reinforcement plate, the cavity size L4 of the inner water cut reinforcement plate, the distance L5 between the front door guard plate and the sheet metal, the thickness L6 of the front door guard plate, the distance D between point A or point B and the outermost corresponding point of the front door guard plate, the front shoulder space requirement a2, and the inclination angle θ of the lower side glass of the front door water cut. The specific value of the distance a from point A or point B in the Y direction to the midpoint of point A and point B can be calculated, which should also be used together with the above-mentioned design value as the drawing parameter of the final driver's side lower field of view water cut surface.

[0099] The target value of the driver's right lower field of view angle γ can be determined according to actual design needs. For example, according to the national standard GB11562, the target value of the driver's right lower field of view angle γ is greater than or equal to 4°.

[0100] According to the attached Figure 4 From the perspective of the above, if the height h of the driver's side lower field of vision water section from point R in the Z direction is no more than 500mm, it can meet the national standard requirement that the target value of the driver's right lower field of vision angle γ is greater than or equal to 4°. At this time, the height h of the driver's side lower field of vision water section from point R in the Z direction can be determined to be 500mm.

[0101] The embodiment of the present application also provides a design system for a driver's side lower field of vision water cut-off surface, which includes a first module, a second module, a third module, a fourth module and a fifth module, wherein:

[0102] The first module is used to obtain a water cut-off section of the driver's side lower vision field based on a first ergonomic parameter of the vehicle model to be developed;

[0103] The second module is used to obtain, based on the driver's side lower visual field water section, a first mapping relationship between the driver's right lower visual field angle γ and the height h of the driver's side lower visual field water section from the R point in the Z direction in the vehicle model to be developed, with respect to the second ergonomic parameter;

[0104] A third module is used to obtain the second ergonomic parameter based on a target value of a third ergonomic parameter of a known vehicle type;

[0105] A fourth module is used to obtain a second mapping relationship between the driver's right lower visual angle γ and the height h of the driver's side lower visual watershed from the R point in the Z direction based on the first mapping relationship, the first ergonomic parameter and the second ergonomic parameter;

[0106] The fifth module is used to determine the driver's side lower field of view water cut-off plane based on the second mapping relationship and the target value of the driver's right lower field of view angle γ.

[0107] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0108] 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.

[0109] The above description 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 designing a water cut-off surface of a driver's side lower vision, characterized in that: It includes the following steps: Based on the first ergonomic parameters of the vehicle to be developed, obtain the water cut-off section of the driver's side lower vision; Based on the driver's side lower vision water section, obtaining a first mapping relationship between the driver's right lower vision angle γ with respect to the second ergonomic parameter and the height h of the driver's side lower vision water section from the R point in the Z direction in the vehicle model to be developed; Based on a target value of a third ergonomic parameter of a known vehicle type, obtaining the second ergonomic parameter; Based on the first mapping relationship, the first ergonomic parameter and the second ergonomic parameter, a second mapping relationship between the driver's right lower visual angle γ and the height h of the driver's side lower visual watershed from the R point in the Z direction is obtained; Determining a driver's side lower visual field water cut-off plane based on the second mapping relationship and a target value of the driver's right lower visual field angle γ; Based on the second mapping relationship and the target value of the right lower visual angle γ of the driver, determining the driver's side lower visual field water cut-off plane includes the following steps: Based on the second mapping relationship, find the driver's right lower visual angle γ that is not less than the target value of the driver's right lower visual angle γ; The height h of the driver's side lower field of vision water section with the maximum value from point R in the Z direction is taken as the design value, and substituted into the first ergonomic parameter of the vehicle model to be developed to obtain the final driver's side lower field of vision water section plane.

2. The design method of the driver's side lower vision water cut-off surface according to claim 1, characterized in that: The first ergonomic parameters include: the height H of the driver's V2 point from the R point in the Z direction, the water section standard section, the front shoulder space requirements, and the height h of the driver's side lower vision water section from the R point in the Z direction.

3. The design method of the driver's side lower vision water cut-off surface according to claim 1, characterized in that: Based on the first ergonomic parameters of the vehicle model to be developed, the water cut-off plane of the driver's side lower vision is obtained, including the following steps: Fit the first ergonomic parameters of the vehicle to be developed to the front door glass; Add the front door sheet metal, front door guard plate, and glass lifter, and complete the watertight section drawing of the driver's side lower vision.

4. The design method of the driver's side lower vision water cut-off surface according to claim 1, characterized in that: Define the tangent point between the driver's V2 point and the left side of the driver's side lower visual field water section as point A, and the tangent point between the driver's V2 point and the right side of the driver's side lower visual field water section as point B; The second ergonomic parameter includes: a distance a between point A or point B and the midpoint between point A and point B in the Y direction.

5. The method for designing the water cut-off surface of the driver's side lower vision according to claim 4, characterized in that: The third ergonomic parameters include: the distance between point A or point B and the corresponding front door glass L1, the thickness of the front door glass L2, the distance between the front door glass and the inner water cut reinforcement plate L3, the cavity size of the inner water cut reinforcement plate L4, the distance between the front door guard plate and the sheet metal L5, the thickness of the front door guard plate L6, the distance D between point A or point B and the outermost corresponding point of the front door guard plate, the front shoulder space requirement a2, and the inclination angle θ of the glass below the front door water cut.

6. The method for designing the water cut-off surface of the driver's side lower vision according to claim 5, characterized in that: The target value of the distance L1 between point A or point B and the corresponding front door glass is greater than or equal to 10 mm; The target value of the front door glass thickness L2 is 4 to 5 mm; The target value of the distance L3 between the front door glass and the inner water-cut reinforcement plate is greater than or equal to 10 mm; The target value of the inner water shear reinforcement plate cavity size L4 is greater than or equal to 30mm; The target value of the distance L5 between the front door guard plate and the sheet metal is greater than or equal to 5mm; The target value of the front door guard plate thickness L6 is greater than or equal to 15mm; The target value of the distance D between point A or point B and the corresponding point on the outermost side of the front door guard plate is greater than or equal to 50 mm; The target value of a2 for the front shoulder space is required to be greater than or equal to 1400mm; The target value of the inclination angle θ of the glass on the lower side of the front door water cut is 10°~15°.

7. The method for designing the water cut section of the driver's side lower vision according to claim 4, characterized in that: Based on the target value of the distance L1 between point A or point B and the corresponding front door glass, the target value of the front door glass thickness L2, the target value of the distance L3 between the front door glass and the inner water cut reinforcement plate, the target value of the inner water cut reinforcement plate cavity size L4, the target value of the distance L5 between the front door guard plate and the sheet metal, the target value of the front door guard plate thickness L6, the target value of the distance D between point A or point B and the outermost corresponding point of the front door guard plate, the target value of the front shoulder space requirement a2, and the target value of the inclination angle θ of the lower side glass of the front door water cut, the distance a of point A or point B from the midpoint of point A and point B in the Y direction is obtained.

8. The method for designing the driver's side lower vision water cut-off surface according to claim 1, characterized in that: The target value of the driver's right lower field of view angle γ is greater than or equal to 4°.

9. A design system for a driver's side lower vision water cut-off surface, characterized in that: It includes: The first module is used to obtain a water cut-off section of the driver's side lower vision field based on a first ergonomic parameter of the vehicle model to be developed; The second module is used to obtain, based on the driver's side lower visual field water section, a first mapping relationship between the driver's right lower visual field angle γ and the height h of the driver's side lower visual field water section from the R point in the Z direction in the vehicle model to be developed, with respect to the second ergonomic parameter; A third module is used to obtain the second ergonomic parameter based on a target value of a third ergonomic parameter of a known vehicle type; A fourth module is used to obtain a second mapping relationship between the driver's right lower visual angle γ and the height h of the driver's side lower visual watershed from the R point in the Z direction based on the first mapping relationship, the first ergonomic parameter and the second ergonomic parameter; The fifth module is used to: determine the driver's side lower field of vision water cut-off surface based on the second mapping relationship and the target value of the driver's right lower field of vision angle γ; the fifth module is also used to: find the driver's right side lower field of vision angle γ that is not less than the target value of the driver's right side lower field of vision angle γ based on the second mapping relationship; take the height h of the driver's side lower field of vision water cut with the maximum value from the R point in the Z direction as the design value, and substitute it into the first ergonomic parameter of the vehicle model to be developed, so as to obtain the final driver's side lower field of vision water cut-off surface.

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