A method for checking the effectiveness of automobile taillight positioning and a method for designing the fastening point position

Abstract

The invention discloses a method for checking the effectiveness of automobile taillight positioning and a method for designing the position of fastening points. The method for checking the effectiveness of automobile taillight positioning first calculates the positioning efficiency by using the positioning effective area and the outer contour projection area, checks the positioning reliability of the taillight, and ensures that the positioning of the taillight is sufficient; then checks whether the fastening projection point falls within the set area, so that each supporting point is evenly stressed, checks the position of the fastening point of the taillight, ensures that the position arrangement of the fastening point is reasonable, and avoids the failure of matching the taillight with the vehicle body environmental parts, uneven gaps, and uneven surface differences; thereby identifying the positioning design risk of the taillight in the design and development stage, guiding the positioning of the taillight and the layout design of the fastening points, and effectively reducing the cycle and cost of matching and repairing the molds of the taillight positioning, fastening points, and the vehicle body taillight seat plate and other parts in the physical assembly stage of the taillight, and ensuring the posture stability and matching gap uniformity of the physical taillight installation.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle lamps, and in particular to a method for checking the positioning effectiveness of a vehicle tail lamp and a method for designing the position of a fastening point. Background Art

[0002] Automobile taillight: A lamp at the rear of an automobile, which is divided into a fixed side and a movable side. Generally, the fixed side is mounted on the vehicle body, and the movable side is mounted on the back door or the trunk. The taillight discussed in the present invention is a fixed side taillight fixed on the vehicle body, which is generally fixedly connected to the vehicle body through three or four supporting points and one or two fastening points. A fixing force is applied at the fastening points so that each supporting surface at the supporting point fits and supports the corresponding supporting position of the vehicle body, thereby realizing the fixed installation of the taillight.

[0003] With the development of manufacturing technology and the trend of streamlined styling, the shape of car taillights has become more and more complex, from the previous relatively regular geometric shapes, such as Figure 1 and Figure 2 As shown in the figure, it has gradually developed into the current quadrilateral, teardrop and other shapes. The positioning and fixing of taillights have also been subject to more restrictions as the shape has developed. In many cases, due to the influence of taillight shape and the limitation of sheet metal design, the taillight has insufficient fixing points and insufficient effective positioning area, resulting in unstable posture after the taillight is positioned and tightened, and uneven matching between the taillight and the environment.

[0004] like Figure 3 As shown, in the existing technical solution for water drop-shaped taillights, in the connection plane formed by the three support points 1 of the taillight, the fastening point 2 is not centered but biased to one side. In this way, when the fastening point 2 is tightened, each support point 1 is subjected to uneven force, the support point 1 subjected to large force is deformed greatly, and the support point 1 subjected to small force may have a gap, causing the taillight as a whole to appear to be flipped, resulting in poor matching between the taillight and the environmental parts, uneven gaps, and uneven surface differences. In addition, the existing fixing method also has the problem that the effective positioning area of ​​the taillight formed by the connection line of the support 1 is insufficient, which is a risk in the fastening of the taillight. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for checking the effectiveness of automobile taillight positioning and a method for designing the fastening point position. During the design and development stage, the positioning of the taillight is checked to ensure that the taillight is fully positioned and the fastening point positions are reasonably arranged, thereby reducing design risks and avoiding installation defects such as insufficient positioning of the taillight when it is actually installed on the vehicle and poor matching when it is tightened.

[0006] In order to solve the above technical problems, the present invention provides a method for verifying the effectiveness of automobile taillight positioning, comprising the following steps:

[0007] Step 1: Project each support point onto a first plane to obtain a number of corresponding support projection points, calculate the area of ​​the area enclosed by the lines connecting each of the support projection points, and record it as the effective positioning area, wherein the first plane is parallel to the mounting support surface of the taillight fixed on the vehicle body;

[0008] Step 2: Project the entire taillight onto the first plane, calculate the area of ​​the region enclosed by the outer contour projection line of the taillight, and record it as the outer contour projection area. The taillight is projected in the installation posture;

[0009] Step 3: Calculate the positioning efficiency of the taillight according to the effective positioning area and the outer contour projection area. If the positioning efficiency is greater than the first set value, jump to step 4; if the positioning efficiency is not greater than the first set value, determine that the positioning effectiveness of the taillight does not meet the requirements;

[0010] Step 4: Project each fastening point of the taillight onto the first plane to obtain a corresponding number of fastening projection points, and determine whether each fastening projection point is located within a set area on the first plane so that each supporting point is evenly stressed. If so, it is determined that the positioning effectiveness of the taillight meets the requirements; if not, it is determined that the positioning effectiveness of the taillight does not meet the requirements.

[0011] In the above-mentioned automobile taillight positioning effectiveness verification method, the positioning reliability of the taillight is first verified by calculating the positioning efficiency. Only when the positioning efficiency exceeds the set value, that is, the effective positioning area is large enough and the taillight and the body are closely connected, can the verification be passed, so that the taillight is fully positioned and insufficient positioning efficiency is avoided; then, by verifying whether the fastening projection point falls within the set area, the fastening point position of the taillight is verified to ensure that the fastening point position is reasonably arranged, so that each support point is evenly stressed and almost the same in size, to avoid the matching failure of the taillight and the body environmental parts, uneven gaps, and unequal surface differences, to ensure the posture stability and matching gap uniformity of the actual taillight installation; thereby identifying the positioning design risks of the taillight in the design and development stage, guiding the positioning of the taillight and the layout design of the fastening points, and effectively reducing the cycle and cost of matching and repairing the molds of the taillight positioning, fastening points, body taillight seat plate and other parts in the physical assembly stage of the taillight.

[0012] The supporting point in the present invention refers to the center of the supporting surface of the vehicle body for the taillight. In the context, for the convenience of analysis and research, the supporting effect of the vehicle body on the taillight is simplified to acting on the supporting point; the fastening point refers to the fixing center where the vehicle body and the taillight are fastened together, such as the center of the bolt fixing hole, etc. Also, for the convenience of analysis and research, the fixing effect of the vehicle body and the taillight is simplified to acting on the fastening point.

[0013] As an improvement to the method for verifying the effectiveness of automobile taillight positioning of the present invention, there are three or four supporting points, and the supporting plane of each supporting point is parallel to the installation supporting surface, and there are one or two fastening points, and the fastening surface of each fastening point is parallel to the installation supporting surface.

[0014] Usually each taillight has three or four support points, one or two fastening points, and all support surfaces are coplanar, which is the installation support surface, that is, all support surfaces are designed to support the taillight on the same plane. Since three points determine a surface, when there are four support points, the fourth support point can be approximately located on the installation support surface formed by the other three support points during analysis.

[0015] Preferably, the mounting support surface is taken as the first plane. Further, when all the support points are located inside the outline of the taillight, in step 2, the outer contour projection area is the area of ​​the region enclosed by the mounting support surface to the cross-sectional outline of the taillight.

[0016] In order to make the force on each support point uniform, the area surrounded by the connecting line of each support projection point is divided into a number of independent areas equal to the number of the fastening points, and a certain range around the centroid of each independent area is taken to form the set area. Preferably, the independent area is a triangular area.

[0017] By applying the fastening force of each fastening point to the centroid of each independent area, after the taillight is fastened to the vehicle body, the forces on the vertices of each independent area can be the same, and then the forces acting on each supporting point can be the same.

[0018] As another improvement of the method for verifying the effectiveness of automobile taillight positioning of the present invention, there is only one fastening point. In step four, the set area includes: a circular area with the centroid of the area enclosed by the lines connecting the support projection points as the center and the second set value as the radius.

[0019] When there is only one fastening point, whether there are three or four supporting points, the fastening point is directly set at the centroid of the area surrounded by the connecting line of the supporting projection points of the triangle or quadrilateral, that is, the fastening force acts on the centroid of the supporting area, so that the supporting force of each supporting point is the same. The second setting value is a floating range, and preferably, the second setting value is zero.

[0020] Furthermore, the second set value is taken as: half of the minimum distance from the centroid of the area enclosed by the lines connecting the support projection points to each side.

[0021] As another improvement of the method for verifying the effectiveness of automobile taillight positioning of the present invention, there are two fastening points, and the area enclosed by the lines connecting the support projection points is divided into two independent triangular areas, and each of the triangular areas has one and only one fastening projection point. In step four, the set area includes: two circular areas with the centroid of each triangular area as the center and the third set value and the fourth set value as the radius respectively.

[0022] When there are two fastening points, no matter there are three or four supporting points, the area enclosed by the line connecting the supporting projection points needs to be divided into two, and then the two fastening points are respectively set at the centroid positions facing the two divided areas, that is, the fastening force acts on the centroids of the two divided supporting areas respectively, so that the supporting forces of each supporting point are the same. The third setting value and the fourth setting value are floating ranges, preferably, both are zero. In addition, the area enclosed by the line connecting the supporting projection points is divided into two, preferably divided into two independent triangular areas, and there are many ways of dividing, any of which can be used.

[0023] Furthermore, the third set value and the fourth set value are respectively taken as: half of the minimum value of the distance from the centroid to each side of each corresponding triangular area.

[0024] As another improvement of the method for verifying the effectiveness of automobile taillight positioning of the present invention, in the step three: calculating the positioning efficiency of the taillight based on the effective positioning area and the outer contour projection area includes: dividing the effective positioning area by the outer contour projection area to obtain a quotient which is the positioning efficiency; and the first set value is taken as one-half.

[0025] The positioning efficiency is the percentage of the effective positioning area to the projection area of ​​the outer contour. The higher the positioning efficiency, the larger the positioning support surface of the taillight and the more secure the positioning fastening, which can accurately reflect the reliability of the taillight positioning.

[0026] In order to solve the above technical problems, the present invention provides a method for designing the position of fastening points based on the above automobile taillight positioning effectiveness verification method, comprising the following steps:

[0027] Step 1: Determine the set area in the first plane.

[0028] Step 2: determining the position of the fastening projection point within the set area;

[0029] Step three: Determine the position of the fastening point according to the position of the fastening projection point.

[0030] In the above-mentioned fastening point position design method, by designing the position of the fastening projection point to be within the set area, the design directly considers making the force of each supporting point uniform, and controls the fastening point to be in a reasonable position.

[0031] As an improvement to the fastening point position design method of the present invention, there is only one fastening point, and the set area includes: a circular area with the centroid of the area enclosed by the lines connecting the support projection points as the center of the circle and half of the minimum distance from the centroid of the area enclosed by the lines connecting the support projection points to each side as the radius.

[0032] As another improvement of the fastening point position design method of the present invention, there are two fastening points, and the step 1 further includes: dividing the area surrounded by the connecting line of each of the support projection points into two independent triangular areas, and each of the triangular areas has and only has one fastening projection point;

[0033] The set area includes: two circular areas with the centroid of each triangular area as the center and half of the minimum distance from the centroid of each corresponding triangular area to each side as the radius.

[0034] In summary, by adopting the above-mentioned automobile taillight positioning effectiveness verification method and fastening point position design method, the positioning design risks of the taillights can be identified in the design and development stage, and the positioning of the taillights and the layout design of the fastening points can be guided. This can effectively reduce the cycle and cost of mold repair and matching of parts such as the taillight positioning, fastening points, and the taillight seat plate of the vehicle body in the actual stage of the taillights, and ensure the posture stability and matching gap uniformity of the actual taillights when installed on the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In the attached picture:

[0036] Figure 1 This is a structural diagram of the quadrilateral taillight.

[0037] Figure 2 This is a structural diagram of the water drop-shaped taillight.

[0038] Figure 3 This is a diagram of the positioning structure of the existing taillights.

[0039] Figure 4 It is a first plane projection schematic diagram of the method for verifying the effectiveness of automobile taillight positioning according to the present invention.

[0040] Figure 5 It is a schematic diagram of the first plane projection of the automobile taillight positioning effectiveness verification method of the present invention with sufficient positioning efficiency after optimization.

[0041] Figure 6 It is a schematic diagram of the setting area of ​​one fixed point and three supporting points of the automobile taillight positioning effectiveness verification method of the present invention.

[0042] Figure 7 A schematic diagram of the setting area of ​​one fixed point and four supporting points of the automobile taillight positioning effectiveness verification method of the present invention.

[0043] Figure 8 It is a schematic diagram of the setting area of ​​two fixed points and three supporting points of the automobile taillight positioning effectiveness verification method of the present invention.

[0044] Fig. 9 It is a schematic diagram of the setting area of ​​two fixed points and four supporting points of the automobile taillight positioning effectiveness verification method of the present invention.

[0045] In the figure, 1, support point; 2, fastening point; 3, support projection point; 4, fastening projection point; 5, outer contour projection line. DETAILED DESCRIPTION

[0046] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0047] Example 1

[0048] First, we receive the three-dimensional engineering data of a taillight, and then conduct verification through a method for verifying the positioning effectiveness of an automobile taillight of the present invention, and then provide the verification conclusion to the three-dimensional engineering data engineer to guide the data engineer to modify the support point 1 and the fastening point 2 of the taillight to meet the design requirements of the positioning effectiveness of the taillight.

[0049] The present invention provides a method for verifying the effectiveness of automobile taillight positioning, comprising the following steps:

[0050] Step S01: extracting taillight design elements: in the 3D design software, extracting the positioning and tightening design elements of the taillight 3D engineering data, including the overall structural design of the taillight, support point 1 (the center point of the support surface) and fastening point 2 (the center point of the fastening surface), etc.

[0051] Step S02: Determine the projection surface: select it according to the assembly direction of the taillight, mainly select the direction of the installation support surface of the taillight, for example: the plane with coplanar support surfaces represented by all support points 1 (i.e. the installation support surface itself), the surface parallel to the installation support surface through the fastening point 2, etc. can all be used as the projection surface.

[0052] Step S10: Figure 4 As shown, each support point 1 is projected onto the first plane to obtain a number of corresponding support projection points 3, and the area of ​​the area surrounded by the lines connecting each support projection point 3 is calculated and recorded as the effective positioning area ( Figure 4 The first plane is parallel to the mounting support surface of the taillight fixed on the vehicle body. When there are three support points 1, a triangular effective positioning area is obtained, and when there are four support points 1, a quadrilateral effective positioning area is obtained.

[0053] Step 20: Figure 4 As shown, the tail lamp is projected onto the first plane as a whole, and the area of ​​the area enclosed by the outer contour projection line 5 of the tail lamp is calculated and recorded as the outer contour projection area ( Figure 4 The entire area enclosed by the outer contour projection line 5), the taillight is projected in the installed posture.

[0054] When all the support points 1 are located inside the outer contour of the taillight, the outer contour projection area can also be the area of ​​the area enclosed by the cross-sectional contour of the installation support facing the taillight. This will reduce the outer contour projection area of ​​the taillight, facilitate the subsequent control of the effective positioning area, increase the effective positioning area, and make the taillight positioning more secure.

[0055] Step 30: Calculate the positioning efficiency of the taillight according to the effective positioning area and the outer contour projection area. If the positioning efficiency is greater than the first set value, jump to step 4; if the positioning efficiency is not greater than the first set value, determine that the positioning effectiveness of the taillight does not meet the requirements.

[0056] Optionally, the quotient obtained by dividing the effective positioning area by the outline projection area is the positioning efficiency; the first set value is one-half.

[0057] For example: Figure 4 In the figure, the effective positioning area is 1.7 square decimeters, while the projection area of ​​the taillight outline is 5.1 square decimeters. The difference between the two is 0.33, which cannot meet the calculation requirements of positioning effectiveness. It is necessary to optimize the position of the taillight support point 1. After the optimized arrangement, the support point 1 is as follows Figure 5 As shown, the effective positioning area is 2.6 square decimeters, while the outer contour area remains unchanged at 5.1 square decimeters. The effective positioning area / outer contour projection area ≈ 0.51> 1 / 2, which meets the design requirements for the effectiveness of taillight positioning.

[0058] Step 40: Project each fastening point 2 of the taillight onto the first plane to obtain a corresponding number of fastening projection points 4, and determine whether each fastening projection point 4 is located within a set area on the first plane so that each supporting point 1 is evenly stressed. If so, it is determined that the positioning effectiveness of the taillight meets the requirements; if not, it is determined that the positioning effectiveness of the taillight does not meet the requirements.

[0059] The specific setting area is divided into the following two situations according to the number of fastening points 2:

[0060] ① The first case: there is only one fastening point 2, and the set area includes: a circular area with the centroid of the area enclosed by the lines connecting the support projection points 3 as the center and the second set value as the radius.

[0061] When there is only one fastening point 2, whether there are three or four supporting points 1, the fastening point 2 is directly set at the centroid of the area surrounded by the connecting line of the supporting projection points 3 of the triangle or quadrilateral, that is, the fastening force acts on the centroid of the supporting area, so that the supporting force of each supporting point 1 is the same. The second setting value is a floating range.

[0062] Optionally, the second set value is: half of the minimum distance from the centroid of the area enclosed by the lines connecting the supporting projection points 3 to each side.

[0063] Specific: Figure 6 As shown, when there are three supporting points 1, the area enclosed by the lines connecting the three supporting projection points 3 is a triangle. The fixed projection point must be within the range of radius R1 with the centroid of the triangle as the center to pass the verification. R1 is the minimum value of D11 / 2, D12 / 2 and D13 / 2. D11, D12 and D13 are the distances from the centroid of the triangle to the three sides respectively.

[0064] like Figure 7 As shown, when there are four supporting points 1, the area enclosed by the lines connecting the four supporting projection points 3 is a quadrilateral. The fixed projection point must be within the range of radius R2 with the centroid of the quadrilateral as the center to pass the verification. R2 is the minimum value of D21 / 2, D22 / 2, D23 / 2 and D24 / 2. D1, D2, D3 and D4 are the distances from the centroid of the quadrilateral to the four sides respectively.

[0065] ② The second situation: there are two fastening points 2, and the area enclosed by the line connecting each supporting projection point 3 is divided into two independent triangular areas, and there is only one fastening projection point 4 in each triangular area. In step four, the set area includes: two circular areas with the centroid of each triangular area as the center and the third set value and the fourth set value as the radius respectively.

[0066] When there are two fastening points 2, no matter there are three or four supporting points 1, the area enclosed by the line connecting the supporting projection points 3 needs to be divided into two, and then the two fastening points 2 are respectively set at the centroid positions facing the two divided areas, that is, the fastening force acts on the centroids of the two divided supporting areas respectively, so that the supporting forces of each supporting point 1 are the same. The third setting value and the fourth setting value are floating ranges. In addition, the area enclosed by the line connecting the supporting projection points 3 is divided into two, preferably into two independent triangular areas, and there are many ways of dividing, any of which is acceptable.

[0067] Optionally, the third set value and the fourth set value are respectively taken as: half of the minimum value of the distance from the centroid to each side of each corresponding triangular area.

[0068] Specific: Figure 8As shown, when there are three supporting points 1, the area enclosed by the line connecting the three supporting projection points 3 is a triangle. The triangle is divided into two by a median line L1 to form two adjacent triangles. The fixed projection points must be within the range of R3 and R4 with the centroid of each triangle as the center of the circle, respectively, to pass the verification. R3 is the minimum value of D31 / 2, D32 / 2 and D33 / 2, and D31, D32 and D33 are the distances from the centroid of the corresponding triangle to its three sides respectively; R4 is the minimum value of D41 / 2, D42 / 2 and D43 / 2, and D41, D42 and D43 are the distances from the centroid of the corresponding triangle to its three sides respectively.

[0069] like Fig. 9 As shown, when there are four supporting points 1, the area enclosed by the lines connecting the four supporting projection points 3 is a quadrilateral. A diagonal line L2 is used to divide the quadrilateral into two to form two adjacent triangles. The fixed projection points must be within the range of the centroid of each triangle with the radius R5 and R6 respectively to pass the verification. R5 is the minimum value of D51 / 2, D52 / 2 and D53 / 2, and D51, D52 and D53 are the distances from the centroid of the corresponding triangle to its three sides respectively; R6 is the minimum value of D61 / 2, D62 / 2 and D63 / 2, and D61, D62 and D63 are the distances from the centroid of the corresponding triangle to its three sides respectively.

[0070] Step S50: If it is determined that the positioning effectiveness of the taillight does not meet the requirements, the verification results are fed back to the 3D data engineer, who will conduct a layout verification, confirm the design environment of the sheet metal, modify the taillight positioning and fastening point 2 within the recommended range, and ensure the effectiveness of the taillight positioning.

[0071] The present invention provides a method for designing the position of the fastening point 2 based on the above-mentioned method for checking the effectiveness of positioning the automobile taillight, comprising the following steps:

[0072] Step 1: In the first plane, determine the set area.

[0073] Step 2: Determine the position of the fastening projection point 4 within the set area;

[0074] Step 3: Determine the position of fastening point 2 according to the position of fastening projection point 4.

[0075] In the above-mentioned method for designing the position of the fastening point 2, by designing the position of the fastening projection point 4 to be within the set area, the design directly considers making the force of each supporting point 1 uniform, and controls the fastening point 2 to be in a reasonable position.

[0076] Optionally, there is only one fastening point 2, and the set area includes: a circular area with the centroid of the area enclosed by the lines connecting the support projection points 3 as the center of the circle and half of the minimum distance from the centroid of the area enclosed by the lines connecting the support projection points 3 to each side as the radius.

[0077] Optionally, there are two fastening points 2, and step 1 further includes: dividing the area enclosed by the line connecting each supporting projection point 3 into two independent triangular areas, and each triangular area has and only has one fastening projection point 4;

[0078] The set area includes: two circular areas with the centroid of each triangular area as the center and half of the minimum distance from the centroid of each corresponding triangular area to each side as the radius.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A method for checking the effectiveness of automobile taillight positioning. It is characterized in that The steps include: Step 1: Project each support point onto a first plane to obtain a number of corresponding support projection points, calculate the area of ​​the area enclosed by the lines connecting each of the support projection points, and record it as the effective positioning area, wherein the first plane is parallel to the mounting support surface of the taillight fixed on the vehicle body; Step 2: Project the entire taillight onto the first plane, and calculate the area of ​​the region enclosed by the outer contour projection line of the taillight, which is recorded as the outer contour projection area; Step 3: Calculate the positioning efficiency of the taillight according to the positioning effective area and the outer contour projection area. If the positioning efficiency is greater than a first set value, jump to step 4; if the positioning efficiency is not greater than the first set value, determine that the positioning effectiveness of the taillight does not meet the requirements; Step 4: Projecting each fastening point of the taillight onto the first plane to obtain a number of corresponding fastening projection points, and determining whether each fastening projection point is located within a set area on the first plane so that each supporting point is evenly stressed. If so, determining that the positioning effectiveness of the taillight meets the requirements; if not, determining that the positioning effectiveness of the taillight does not meet the requirements; The number of the supporting points is three or four, and the number of the fastening points is one or two; There is only one fastening point. In step 4, the set area includes: a circular area with the centroid of the area enclosed by the lines connecting the support projection points as the center and the second set value as the radius; There are two fastening points, and the area enclosed by the line connecting the support projection points is divided into two independent triangular areas, and there is only one fastening projection point in each triangular area. In step four, the set area includes: two circular areas with the centroid of each triangular area as the center and the third set value and the fourth set value as the radius respectively.

2. A method for verifying the effectiveness of automobile taillight positioning according to claim 1, It is characterized in that The supporting plane of each supporting point is parallel to the installation supporting surface, and the fastening surface of each fastening point is parallel to the installation supporting surface.

3. A method for verifying the effectiveness of automobile taillight positioning according to claim 1, It is characterized in that The second set value is: half of the minimum distance from the centroid of the area enclosed by the lines connecting the support projection points to each side.

4. A method for verifying the effectiveness of automobile taillight positioning according to claim 1, It is characterized in that The third set value and the fourth set value are respectively taken as: half of the minimum value of the distance from the centroid to each side of each corresponding triangular area.

5. A method for verifying the effectiveness of automobile taillight positioning according to claim 1, It is characterized in that In step three: Calculating the positioning efficiency of the taillight according to the positioning effective area and the outer contour projection area includes: dividing the positioning effective area by the outer contour projection area to obtain a quotient which is the positioning efficiency; The first set value is half.

6. A method for designing the position of fastening points based on the method for checking the effectiveness of positioning the automobile taillights according to any one of claims 1 to 5, It is characterized in that The steps include: Step 1: Determine the set area in the first plane. Step 2: determining the position of the fastening projection point within the set area; Step three: Determine the position of the fastening point according to the position of the fastening projection point.

7. A method for verifying the effectiveness of automobile taillight positioning according to claim 6, It is characterized in that There is only one fastening point, and the set area includes: a circular area with the centroid of the area enclosed by the lines connecting the support projection points as the center of the circle and half of the minimum distance from the centroid of the area enclosed by the lines connecting the support projection points to each side as the radius.

8. A method for verifying the effectiveness of automobile taillight positioning according to claim 6, It is characterized in that There are two fastening points, and step one further comprises: Divide the area enclosed by the connecting line of each of the support projection points into two independent triangular areas, and each of the triangular areas has and only has one fastening projection point; The set area includes: two circular areas with the centroid of each triangular area as the center and half of the minimum distance from the centroid of each corresponding triangular area to each side as the radius.

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