Lateral defrosting air port arrangement checking method

Abstract

The invention discloses a side defrosting air port arrangement checking method, which relates to the technical field of automobiles, and comprises the following steps: S1, inputting modeling data including an artificial eye ellipse, an outside rear-view mirror and front door glass; s2, a side defrosting and blowing target area is determined, specifically, the connecting line of the center of the outside rear-view mirror and the center of the dummy eye ellipse forms a curved surface along the direction of the connecting line and the tangent line of the dummy eye ellipse intersecting with the outer contour line of the outside rear-view mirror, the curved surface and the front door glass form an intersecting line area, and the intersecting line area is the side defrosting and blowing target area; s3, determining an airflow drop point: preliminarily determining the airflow drop point, analyzing and verifying the defrosting or demisting effect, and correcting the target blowing direction and the airflow drop point; s4, determining the blowing direction; and S5, the effective area of the side defrosting air opening is determined. According to the method, the ellipse of the artificial human eye and the contour line of the outside rear-view mirror form the curved surface, the intersecting line area of the curved surface and the front door glass serves as a side defrosting blowing target area, optimization design of air opening arrangement is achieved through simulation and correction, and the performance requirement of side defrosting is met.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly to a method for checking the layout of side defrosting air vents. Background Art

[0002] In the field of modern automobile design, the safety and driving experience of vehicles are the core elements that manufacturers and consumers are jointly concerned about. Especially under harsh weather conditions, such as rain, snow, frost, etc., ensuring clear visibility of the vehicle windows is crucial for driving safety. In traditional vehicle designs, as a key component for maintaining clear visibility of the side window glass, the position and shape of the side defrosting air vents are often restricted by the overall body shape design and aerodynamic considerations of the vehicle.

[0003] However, with the increasing diversification and personalized requirements of automobile shape designs, the layout of side defrosting air vents faces more and more challenges. In many cases, in order to pursue a more streamlined body appearance or optimize the interior space layout of the vehicle, the position of the side defrosting air vents is arranged not ideally, resulting in low efficiency when performing the defrosting and demisting functions, and unable to meet the requirements of quickly and evenly removing frost and fog on the side windows. This not only prolongs the time for the driver to wait for the window to be clear, reducing driving efficiency, but more importantly, it may seriously threaten driving safety due to blocked vision in case of emergencies.

[0004] To solve this technical problem, although there have been some attempts in the prior art to improve the side defrosting effect by adjusting the shape of the air vents, increasing the air volume or changing the air flow direction, etc., these methods are often limited to fine-tuning the existing air vent designs and fail to fundamentally solve the problem of insufficient defrosting and demisting capabilities caused by improper air vent positions. In addition, the lack of a systematic and quantitative checking method makes it difficult to accurately predict and optimize the effect of side defrosting air vent layout at the initial stage of vehicle model development, increasing the cost and time of later design changes.

[0005] In view of this, how to achieve the optimal design of the side defrosting air vent layout at the new vehicle model development stage, effectively avoid unnecessary later modifications, speed up the product development cycle, and reduce the R & D cost is a technical problem to be solved. Summary of the Invention

[0006] The object of the present invention is to provide a method for checking the layout of side defrosting air vents to solve the problems existing in the above prior art. By using the curved surface formed by the ellipse of the dummy eye and the contour line of the external rearview mirror, and taking the intersection area between the curved surface and the front door glass as the side defrosting blowing target area, through simulation and correction, the optimal design of the air vent layout is realized to meet the performance requirements of side defrosting.

[0007] To achieve the above object, the present invention provides the following solution:

[0008] The present invention provides a method for checking the layout of side defrosting air vents, including:

[0009] S1. Input styling data: including the dummy eye ellipse, the exterior rearview mirror, and the front door glass;

[0010] S2. Determine the side defrosting air blowing target area: The tangent line of the dummy eye ellipse that intersects the outer contour line of the exterior rearview mirror along the connection line between the center of the exterior rearview mirror and the center of the dummy eye ellipse forms a curved surface, and the intersection line area formed by the intersection of the curved surface and the front door glass is the side defrosting air blowing target area;

[0011] S3. Determine the air flow landing point: Initially determine the air flow landing point, analyze and verify the defrosting or defogging effect, and correct the target air blowing direction and the air flow landing point;

[0012] S4. Determine the air blowing direction;

[0013] S5. Determine the effective area of the side defrosting air vent.

[0014] In one embodiment, the dummy eye ellipse includes a left eye ellipse and a right eye ellipse; the connection line between the center of the exterior rearview mirror and the center of the left eye ellipse, and the tangent line of the left eye ellipse along the connection line direction and the outer contour line of the exterior rearview mirror form a first curved surface, and the first curved surface and the front door glass form a first intersection line area; the connection line between the center of the exterior rearview mirror and the center of the right eye ellipse, and the tangent line of the right eye ellipse along the connection line direction and the outer contour line of the exterior rearview mirror form a second curved surface, and the second curved surface and the front door glass form a second intersection line area; the union of the first intersection line area and the second intersection line area obtains the side defrosting air blowing target area.

[0015] In one embodiment, the exterior rearview mirror is a left rearview mirror or a right rearview mirror, the front door glass is a left front door glass or a right front door glass, the side defrosting air blowing target area is a left air blowing area or a right air blowing area, the left rearview mirror and the left front door glass on the driver side determine the left air blowing area, and the right rearview mirror and the right front door glass on the passenger side determine the right air blowing area.

[0016] In one embodiment, between step S2 and step S3, there is also step S2.1, that is, draw a grid: draw a grid according to the side defrosting air blowing target area, the grid covers the left air blowing area or the right air blowing area, and determine the side defrosting air blowing target area.

[0017] In one embodiment, the grid adopts a nine-square grid.

[0018] In one embodiment, the left air flow landing point is in the left air blowing area, at the intersection position of 1 / 3 from the front side and 1 / 3 from the lower side.

[0019] In one embodiment, the right airflow landing point is in the right blowing area, at the intersection position of 2 / 3 of the distance from the front side and 1 / 3 of the distance from the lower side.

[0020] In one embodiment, the included angle between the blowing direction of the side defrost air outlet and the front door glass is 20° to 30°.

[0021] In one embodiment, the effective area of the side defrost air outlet is 650 mm 2 ~1000 mm 2 .

[0022] In one embodiment, the styling data in step S1 further includes the instrument panel.

[0023] The present invention has achieved the following technical effects compared with the prior art:

[0024] The present invention uses the tangent line of the dummy eye ellipse intersecting with the outer contour line of the outer rearview mirror to form a curved surface, and uses the intersection area of the curved surface and the front door glass as the side defrost blowing target area. Through simulation and correction, the optimized design of the air outlet layout is realized, which can meet the performance requirements of side defrosting. That is, through scientific and quantitative means, the influence of different air outlet positions on the defrosting efficiency and effect is accurately evaluated, and then the design optimization is guided to ensure that the frost and fog on the side window can be quickly and effectively removed, significantly improving the driving experience and driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is the overall layout schematic diagram in the embodiment of the present invention;

[0027] Figure 2 It is the left-side layout schematic diagram in the embodiment of the present invention;

[0028] Figure 3 It is the right-side layout schematic diagram in the embodiment of the present invention;

[0029] Figure 4 It is the corresponding schematic diagram of the left air outlet and the left front door glass in the embodiment of the present invention;

[0030] Figure 5 It is according to Figure 4 The airflow velocity cloud diagram of the near-wall surface of the left front door glass;

[0031] Figure 6Schematic diagram corresponding to the right air outlet and the right front door glass in the embodiment of the present invention;

[0032] Figure 7 As per Figure 6 Airflow velocity contour map of the near-wall surface of the right front door glass;

[0033] Figure 8 Maximum wind speed contour map of the near-wall surface of the left front door glass in the embodiment of the present invention;

[0034] Figure 9 Wind speed contour map of 0 - 2 m / s of the near-wall surface of the left front door glass in the embodiment of the present invention;

[0035] Figure 10 Maximum wind speed contour map of the near-wall surface of the right front door glass in the embodiment of the present invention;

[0036] Figure 11 Wind speed contour map of 0 - 2 m / s of the near-wall surface of the right front door glass in the embodiment of the present invention;

[0037] Wherein, 1. Left rearview mirror; 2. Left front door glass; 3. Oval of the dummy's eyes; 4. Instrument panel; 5. Left eye line of sight direction on the left side; 6. Right eye line of sight direction on the left side; 7. Left eye line of sight direction on the right side; 8. Right eye line of sight direction on the right side; 9. Right rearview mirror; 10. Right front door glass; 11. Left blowing area; 12. Left airflow landing point; 13. Left blowing direction; 14. Left defrosting air outlet; 15. Right defrosting air outlet; 16. Right blowing direction; 17. Right airflow landing point; 18. Right blowing area. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0039] The purpose of the present invention is to provide a method for checking the layout of side defrosting air outlets to solve the problems existing in the prior art. By using the oval of the dummy's eyes and the contour line of the outer rearview mirror to form a curved surface, and taking the intersection area of the curved surface and the front door glass as the side defrosting blowing target area, through simulation and correction, the optimized design of the air outlet layout is realized to meet the performance requirements of side defrosting.

[0040] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0041] As shown in Figures 1 to 11As shown in the figure, the present invention provides a method for checking the layout of side defrosting air vents, including:

[0042] S1. Input styling data: including the dummy eye ellipse 3, the exterior rearview mirror, and the front door glass; the styling data is virtual data of CAS (Concept A Surface, preliminary outer surface digital model) so as to be able to perform simulation calculations using CFD (Computational Fluid Dynamics), and then predict and analyze the flow behavior of the air flow blown out from the side defrosting air vents.

[0043] S2. Determine the side defrosting blowing target area: The tangent line of the dummy eye ellipse 3 that intersects the outer contour line of the exterior rearview mirror along the line connecting the center of the exterior rearview mirror and the center of the dummy eye ellipse 3 forms a curved surface, and the intersection area formed by the curved surface and the front door glass is the side defrosting blowing target area. It should be noted that when determining the side defrosting blowing target area, the side defrosting blowing target area can be the left blowing area 11 or the right blowing area 18. In the present invention, either the left blowing area 11 can be determined alone, or the right blowing area 18 can be determined alone, or both the left blowing area 11 and the right blowing area 18 can be determined. When determining the left blowing area 11 and the right blowing area 18 respectively, the left rearview mirror 1, the left front door glass 2, and the dummy eye ellipse 3 determine the left blowing area 11, and the right rearview mirror 9, the right front door glass 10, and the dummy eye ellipse 3 determine the right blowing area 18.

[0044] S3. Determine the air flow landing points: Initially determine the air flow landing points. The left air flow landing point 12 is located in the left blowing area 11, and the right air flow landing point 17 is located in the right blowing area 18. The left air flow landing point 12 and the right air flow landing point 17 are determined separately and verified separately. According to the content in step S2, if the determined side defrosting blowing target area is the left blowing area 11, then the left air flow landing point 12 is determined; if the determined side defrosting blowing target area is the right blowing area 18, then the right air flow landing point 17 is determined. After analyzing and verifying the defrosting or defogging effect, correct the target blowing direction and the air flow landing points to meet the defrosting or defogging requirements.

[0045] S4. According to the result of step S3, determine the blowing direction.

[0046] S5. Determine the effective area of the side defrosting air vents. Under the appropriate blowing direction, adopt the effective area of the effective side defrosting air vents, and by controlling the blowing flow rate, the defrosting or defogging requirements can be met at a certain flow rate.

[0047] The present invention utilizes the tangent line of the dummy eye ellipse 3 that intersects the outer contour line of the exterior rearview mirror (left rearview mirror 1 or right rearview mirror 9) to form a curved surface, and takes the intersection area of the curved surface and the front door glass (left front door glass 2 or right front door glass 10) as the side defrosting blowing target area (left blowing area 11 or right blowing area 18). Through simulation and correction, the optimization design of the air outlet layout is realized, which can meet the performance requirements of side defrosting. That is, through scientific and quantitative means, the influence of different air outlet positions on the defrosting efficiency and effect is accurately evaluated, and then the design optimization is guided to ensure that the frost and fog on the side window can be quickly and effectively removed, significantly improving the driving experience and driving safety.

[0048] In one embodiment, the dummy eye ellipse 3 includes a left eye ellipse and a right eye ellipse.

[0049] When determining the left blowing area 11, connect the center of the left rearview mirror 1 and the center of the left eye ellipse, and this connection line is the left eye line of sight direction 5 on the left side. Along the left eye line of sight direction 5 on the left side, the tangent line of the left eye ellipse and the outer contour line of the left rearview mirror 1 form a first curved surface, and the first curved surface and the left front door glass 2 form a first intersection area; connect the center of the left rearview mirror 1 and the center of the right eye ellipse, and this connection line is the right eye line of sight direction 6 on the left side. Along the right eye line of sight direction 6 on the left side, the tangent line of the right eye ellipse and the outer contour line of the left rearview mirror 1 form a second curved surface, and the second curved surface and the left front door glass 2 form a second intersection area; the union of the first intersection area and the second intersection area is obtained to get the left blowing area 11.

[0050] When determining the right blowing area 18, connect the center of the right rearview mirror 9 and the center of the left eye ellipse, and this connection line is the left eye line of sight direction 7 on the right side. Along the left eye line of sight direction 7 on the right side, the tangent line of the left eye ellipse and the outer contour line of the right rearview mirror 9 form a first curved surface, and the first curved surface and the right front door glass 10 form a first intersection area; connect the center of the right rearview mirror 9 and the center of the right eye ellipse, and this connection line is the right eye line of sight direction 8 on the right side. Along the right eye line of sight direction 8 on the right side, the tangent line of the right eye ellipse and the outer contour line of the right rearview mirror 9 form a second curved surface, and the second curved surface and the right front door glass 10 form a second intersection area; the union of the first intersection area and the second intersection area is obtained to get the right blowing area 18.

[0051] In one embodiment, the exterior rearview mirror is the left rearview mirror 1 or the right rearview mirror 9, the front door glass is the left front door glass 2 or the right front door glass 10, and the side defrosting blowing target area is the left blowing area 11 or the right blowing area 18. The left rearview mirror 1 on the driving side and the left front door glass 2 determine the left blowing area 11, and the right rearview mirror 9 on the co-driver side and the right front door glass 10 determine the right blowing area 18.

[0052] In one embodiment, between step S2 and step S3, there is also step S2.1, that is, drawing a grid. Actually, in step S2, the visible area is first determined. By drawing a grid, the visible area can be covered, and the grid area is used as the target area for side defrosting blowing. By drawing a grid, it is convenient to determine the air flow landing points within the target area for side defrosting blowing. Specifically, according to the target area for side defrosting blowing, a grid is drawn. The grid can adopt various types, such as a tic-tac-toe grid or a nine-square grid arranged horizontally and vertically. The grid covers the left blowing area 11 or the right blowing area 18, thereby determining the target area for side defrosting blowing.

[0053] In one embodiment, the grid adopts a nine-square grid, which can divide the target area for side defrosting blowing into nine areas, making it more convenient to determine the air flow landing points.

[0054] In one embodiment, when initially determining the air flow landing points, the left air flow landing point 12 is in the left blowing area 11, at the intersection position of 1 / 3 from the front side and 1 / 3 from the lower side. After correcting the target blowing direction and the air flow landing points, it can meet the defrosting or defogging requirements. The initially determined left air flow landing point 12 and the final left air flow landing point 12 are not much different in position. Therefore, using the above-mentioned left air flow landing point 12 can facilitate the correction.

[0055] In one embodiment, when initially determining the air flow landing points, the right air flow landing point 17 is in the right blowing area 18, at the intersection position of 2 / 3 from the front side and 1 / 3 from the lower side. After correcting the target blowing direction and the air flow landing points, it can meet the defrosting or defogging requirements. The initially determined right air flow landing point 17 and the final right air flow landing point 17 are not much different in position. Therefore, using the above-mentioned right air flow landing point 17 can facilitate the correction.

[0056] In one embodiment, the blowing direction of the left defrosting air outlet 14, that is, the left blowing direction 13, forms an angle of 20° - 30° with the left front door glass 2; the blowing direction of the right defrosting air outlet 15, that is, the right blowing direction 16, forms an angle of 20° - 30° with the right front door glass 10. The setting of the above angles can meet the defrosting or defogging requirements.

[0057] In one embodiment, the effective area of the left defrosting air outlet 14 is 650mm 2 ~1000mm 2 ; the effective area of the right defrosting air outlet 15 is 650mm 2 ~1000mm 2 .

[0058] In one embodiment, the styling data in step S1 also includes the instrument panel 4. The positional relationship between the side defrosting air outlet and the instrument panel 4 is relatively fixed, and the instrument panel 4 can be used as a basis for determining the positional relationships including the front door glass, the exterior rearview mirror, etc.

[0059] Combined with Figures 4 to 11 As shown, the specific embodiments of the present invention are provided as follows:

[0060] ①. Input conditions: dummy eye ellipse 3, outside rearview mirrors (left rearview mirror 1 and right rearview mirror 9), front door glasses (left front door glass 2 and right front door glass 10), instrument panel 4.

[0061] ②. Visible area determination: The line connecting the center of the left rearview mirror 1 and the center of the eye ellipse, and the intersection line area of the surface formed by the tangent line of the eye ellipse along the connection line direction and the outer contour line of the left rearview mirror 1 and the left front door glass 2; the union of the areas obtained from the two eye ellipses; the same for the right side.

[0062] ③. Draw a nine-square grid: Draw a nine-square grid according to the intersection line area to determine the side defrosting blowing target areas (left blowing area 11 and right blowing area 18).

[0063] ④. Airflow landing point determination: The defrosting center on the driver's side (left airflow landing point 12) is at the intersection of the front 1 / 3 and the upward 1 / 3; the defrosting center on the co-driver's side (right airflow landing point 17) is at the intersection of the front 2 / 3 and the upward 1 / 3, that is, the landing point of the side defrosting air outlet; later, through CFD analysis and verification, the target blowing direction and landing point are continuously corrected.

[0064] ⑤. Blowing direction determination: The best angle between the side defrosting air outlet and the front door glass is 20° - 30°.

[0065] ⑥. Determine the effective area of the side defrosting air outlet: The best effective area is 650mm 2 -1000mm 2 .

[0066] The method provided by the present invention can effectively solve the problem of the layout of the side defrosting air outlet, meet the position of the side defrosting air outlet required for styling drawing, and effectively shorten the workload of CAE analysis (Computer-Aided Engineering analysis, that is, computer-aided engineering analysis). After the airflow landing point is corrected within the side defrosting blowing target area according to the CAE analysis, the side defrosting effect meets the requirements.

[0067] As Figures 8 to 11 shown, the present invention provides the side defrosting and defogging analysis of a certain MPV (Multi-Purpose Vehicle, that is, a multi-purpose vehicle model).

[0068] From Figures 8 to 11 the cloud map shown, it can be seen that the airflow velocity on the near-wall surface of the left front door glass 2 is greater than 2 m / s and can cover the visible area, meeting the defrosting performance requirements; the airflow velocity on the near-wall surface of the right front door glass 10 is greater than 2 m / s and can cover the visible area, meeting the defrosting performance requirements.

[0069] In the present invention, specific examples are used to illustrate the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A method for calibrating the arrangement of side defrost vents, characterized in that: include: S1. Input modeling data: including dummy eye ellipses, exterior rearview mirrors, and front door glass; S2, determining the side defrost blowing target area: the line connecting the center of the exterior rearview mirror and the center of the dummy eye ellipse, along the connecting direction, the tangent of the dummy eye ellipse intersecting with the outer contour line of the exterior rearview mirror forms a curved surface, the curved surface and the front door glass form an intersection area, and the intersection area is the side defrost blowing target area; S3. Determine the airflow landing point: Preliminarily determine the airflow landing point, analyze and verify the defrosting or defogging effect, and correct the target blowing direction and airflow landing point; S4, determine the blowing direction; S5. Determine the effective area of ​​the side defrost air outlet.

2. The side defrost air outlet arrangement verification method according to claim 1, characterized in that: The dummy eye ellipse includes a left eye ellipse and a right eye ellipse; a line is connected between the center of the exterior rearview mirror and the center of the left eye ellipse, and the tangent of the left eye ellipse and the outer contour line of the exterior rearview mirror along the connecting line direction constitute a first curved surface, and the first curved surface and the front door glass form a first intersection area; a line is connected between the center of the exterior rearview mirror and the center of the right eye ellipse, and the tangent of the right eye ellipse and the outer contour line of the exterior rearview mirror along the connecting line direction constitute a second curved surface, and the second curved surface and the front door glass form a second intersection area; the first intersection area and the second intersection area are obtained by finding the full set to obtain the side defrost blowing target area.

3. The side defrost air outlet arrangement verification method according to claim 2, characterized in that: The exterior rearview mirror is a left rearview mirror or a right rearview mirror, the front door glass is a left front door glass or a right front door glass, the side defrost blowing target area is a left blowing area or a right blowing area, the left rearview mirror and the left front door glass on the driver's side determine the left blowing area, and the right rearview mirror and the right front door glass on the co-pilot side determine the right blowing area.

4. The side defrost air outlet arrangement verification method according to claim 3, characterized in that: Also included between step S2 and step S3 is step S2.1, namely drawing a grid: drawing a grid according to the side defrost blowing target area, the grid covering the left blowing area or the right blowing area, and determining the side defrost blowing target area.

5. The side defrost air outlet arrangement verification method according to claim 4, characterized in that: The grid adopts a nine-square grid.

6. The side defrost air outlet arrangement verification method according to claim 4 or 5, characterized in that: The left airflow landing point is in the left blowing area, at the intersection of 1 / 3 from the front side and 1 / 3 from the bottom side.

7. The side defrost air outlet arrangement verification method according to claim 4 or 5, characterized in that: The right airflow landing point is in the right blowing area, at the intersection of 2 / 3 from the front side and 1 / 3 from the bottom side.

8. The side defrost air outlet arrangement verification method according to claim 1, characterized in that: The angle between the blowing direction of the side defrost air outlet and the front door glass is 20° to 30°.

9. The side defrost air outlet arrangement verification method according to claim 1, characterized in that: The effective area of ​​the side defrost air outlet is 650mm 2 ~1000mm 2 .

10. The side defrost air outlet arrangement verification method according to claim 1, characterized in that: The design data in step S1 also includes the instrument panel.

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