CN-114655134-B - Drainage structure of front coaming

Abstract

A dash panel drainage structure includes a lower inner member, a lower outer member disposed outside the lower inner member and connected to the lower inner member to define a closed space between the lower inner member and the lower outer member, and an upper outer member coupled to the lower outer member and the lower inner member, wherein the upper outer member includes a main hole, and a portion of the space defined between the upper outer member and the lower inner member is configured to be in fluid communication with the outside.

Inventors

• Zheng Songzai

Assignees

• 现代自动车株式会社
• 起亚株式会社

Dates

Publication Date

20260508

Application Date

20210929

Priority Date

20201222

Claims (20)

1. 1.A dash panel drainage structure, comprising: a lower inner member; a lower outer member disposed outside the lower inner member and coupled to the lower inner member to define a closed space between the lower inner member and the lower outer member, and Wherein the upper outer member includes a main bore and a portion of a space defined between the upper outer member and the lower inner member is configured to be in fluid communication with the exterior, wherein a closed space between the lower inner member and the lower outer member is not in fluid communication with a space defined between the upper outer member and the lower inner member.
2. 2. A dash panel drainage structure according to claim 1, wherein the main hole is located in a lower portion of the upper outer member and is arranged to be in contact with the lower outer member.
3. 3. The dash panel drainage structure of claim 1, wherein the upper outer member comprises an auxiliary hole.
4. 4. The dash panel drainage structure of claim 1, further comprising an upper inner member disposed in a portion of the area between the upper outer member and the lower inner member.
5. 5. A dash panel drainage structure according to claim 4, wherein the upper inner member comprises an opening formed through the upper inner member.
6. 6. A dash panel drainage structure according to claim 4, wherein the upper inner member is coupled to an upper portion of the lower outer member.
7. 7. A dash panel drainage structure according to claim 1, wherein the lower outer member comprises an upper flange and a lower flange that are bent at upper and lower ends of the lower outer member and connected to the lower inner member.
8. 8. The dash panel drainage structure of claim 1, wherein the upper outer member is coupled to the lower outer member.
9. 9. The dash panel drainage structure of claim 1, wherein the lower inner member comprises: A base portion, the lower outer member being coupled to the base portion; a vertical portion bent from the base portion and extending upward, and And a guide portion bent from the vertical portion and extending upward.
10. 10. The dash panel drainage structure according to claim 9, wherein the guide portion is connected to a dash panel of a vehicle.
11. 11. A dash panel drainage structure, comprising: a lower inner member connected to the dash panel, wherein the lower inner member includes a guide portion configured to receive water from the dash panel; a lower outer member disposed outside the lower inner member and coupled to the lower inner member to define a closed space between the lower inner member and the lower outer member, and Wherein a space defined between the upper outer member and the lower inner member is configured to communicate with the dash panel, and the guide portion and the main hole are laterally offset from each other.
12. 12. The dash panel drainage structure of claim 11, further comprising an upper inner member disposed between the upper outer member and the lower inner member, the upper inner member comprising an opening.
13. 13. The dash panel drainage structure of claim 12 wherein the upper inner member is coupled to an upper portion of the lower outer member.
14. 14. The dash panel drainage structure of claim 11, wherein the lower inner member comprises: a vertical portion extending downward from the guide portion, and A base portion that is perpendicular to and extends from the vertical portion, wherein the guide portion is coupled to the dash panel in an overlapped state.
15. 15. The dash panel drainage structure of claim 14 wherein the lower outer member comprises: an upper flange bent at an upper end of the lower outer member and coupled to the vertical portion, and A lower flange bent at a lower end of the lower outer member and coupled to the base portion.
16. 16. A dash panel drainage structure according to claim 15, wherein the lower outer member comprises a support portion that extends between the upper flange and the lower flange.
17. 17. The dash panel drainage structure of claim 16, wherein a lower portion of the upper outer member is coupled to the support portion.
18. 18. A vehicle, comprising: a vehicle body including an engine hood and a dash panel; a lower inner member connected to the dash panel; a lower outer member disposed outside the lower inner member and coupled to the lower inner member to define a closed space between the lower inner member and the lower outer member, and Wherein a space defined between the upper outer member and the lower inner member is configured to communicate with the dash panel, wherein a closed space between the lower inner member and the lower outer member is not in fluid communication with a space defined between the upper outer member and the lower inner member.
19. 19. The vehicle of claim 18, further comprising an upper inner member disposed between the upper outer member and the lower inner member, the upper inner member including an opening.
20. 20. The vehicle of claim 18, wherein, The lower inner member includes: A guide portion coupled to the dash panel in an overlapped state; a vertical portion extending downward from the guide portion, and A base portion perpendicular to and extending from the vertical portion; the lower outer member includes: An upper flange bent at an upper end of the lower outer member and connected to the vertical portion; A lower flange bent at a lower end of the lower outer member and coupled to the base portion, and A support portion extending between the upper flange and the lower flange.

Description

Drainage structure of front coaming Technical Field The present invention relates to a dash panel drainage structure for a vehicle. Background The term "cab front" as used in vehicle design refers to a style of vehicle design in which the a-pillar is displaced to a forward position to maximize space within the vehicle. As shown in fig. 1A, the angle between the hood 510 'and the windshield 520' in the cab-forward design is greatly increased as compared to the angle between the hood 510 and the windshield 520 in the conventional design. In the cab front design, since the angle between the hood 510 'and the windshield 520' increases, the air resistance decreases and the amount of front interior space of the passenger seated on the front seat increases, thereby improving marketability. However, since the dash panel high point (cowl point) moves more forward than the conventional design (the dash panel high point moves from P1 to P2 in the cab-forward design), the amount of space in the engine compartment decreases, the distance between the dash panel and the dash upper cover end increases, and thus the improvement performance of NVH (noise, vibration and harshness, noise, vibration AND HARSHNESS) deteriorates. The dash panel is used to introduce outside air into the vehicle interior to ventilate the vehicle and to discharge water accumulated therein in rainy days or during washing. The dash panel is a cross member that connects the left and right front pillars, and plays a critical role in ensuring torsional rigidity and lateral bending rigidity of the vehicle. Further, since the dash panel supports a windshield, a wiper, a steering column, and the like, the dash panel is an element that plays a critical role in improving NVH performance. As shown in fig. 1B and 1C, since the length L1 of the dash panel of the conventional vehicle is relatively short, a sufficient space is ensured to assemble the components. In contrast, since the dash panel of the cab-forward-designed vehicle moves forward at a high point, the length L2 of the dash panel increases, reducing the amount of space required for assembling components in the engine compartment. To increase the assembly space as shown in S2', a process of cutting a portion of the dash panel, assembling the components in the engine compartment, and providing the additional component 530 may be applied. In this case, although the assembly space may be increased from S2 to S2', NVH improvement performance is deteriorated due to the assembly of additional components. In addition, due to the characteristics of the cab front design, the length L2 between the dash panel and the cowl top ends is greatly increased, and NVH improves performance deterioration, as compared with the conventional design. To improve NVH performance, a cowl top having an increased length is coupled to the fender member. Referring to fig. 2A, as described above, in order to improve NVH performance of the dash panel, the drain structure of the dash panel 540 is connected with the enlarged-size fender member 550. Here, since large holes must be formed at the outside and inside of the fender member 550, which greatly contributes to the improvement of the anti-collision performance and the improvement of the NVH performance, the size of the drain hole 560 must be greatly reduced. As shown by arrows in fig. 2B, the drainage structure of the conventional vehicle is configured to be formed through the outside and inside of the fender member 550. Therefore, there is a problem in that water falls not only to the outside of the fender member 550 but also to the inside of the fender member 550 (see a hatched area in fig. 2B). For this reason, corrosion may occur inside the fender member 550, and the anti-collision performance may be deteriorated due to the reduced thickness of the fender member 550. Korean patent registration publication No. 10-0521676 describes information related to the present subject matter. The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore it does not form the prior art that is already known in the art that it may contain. Disclosure of Invention The present invention relates to a dash panel drainage structure for a vehicle. The present embodiment relates to a dash panel drainage structure configured to isolate a drainage path from a collision load path to prevent corrosion and improve drainage performance. Embodiments of the present invention may solve the problems associated with the prior art. One embodiment of the present invention provides a dash panel drainage structure capable of preventing corrosion of a fender member. Another embodiment of the present invention provides a dash panel drainage structure having excellent drainage properties. In particular, another embodiment of the present invention provides a dash panel drainage structure capable of preventing corrosion of a fender memb