CN111347847A - Vehicle door inner panel, vehicle door and vehicle - Google Patents

Abstract

Embodiments of the present disclosure disclose a door inner panel, a vehicle door, and a vehicle. The vehicle door inner panel includes a connecting portion, a transition portion, and a side wall. The connecting portion is connected to the bottom of the vehicle door outer panel, and the transition portion is formed by the connecting portion. The side wall is formed by extending to a side away from the outer door panel, and the side wall is formed by the transition portion extending upward and away from the outer door panel; wherein, the transition portion is provided with a first water leakage hole, the The lower part of the side wall is provided with a second water leakage hole. Based on the vehicle door inner panel, vehicle door and vehicle provided by the above-mentioned embodiments of the present disclosure, the first water leakage hole and the second water leakage hole are respectively provided in the transition part and the lower part of the side wall, so that the number of openings is increased, so that the unit area of the openings is reduced. , so that the high frequency noise is reduced to the intermediate frequency, and the NVH performance is improved.

Description

Vehicle door inner panel, vehicle door and vehicle

technical field

The present disclosure relates to the technical field of the automobile industry, in particular to a vehicle door inner panel, a vehicle door and a vehicle.

Background technique

The drain hole of the car door is generally arranged on the sheet metal part of the car door, and is located at the bottom position of the car door, and is used to remove the accumulated water that seeps into the car door in rainy days. However, although the drain hole at the bottom of the door can effectively remove the accumulated water in the door; however, since the drain hole is exposed, the air flowing through the drain hole will make noise when the car is running, and the drain hole is relatively close to the cab. , the noise is easily introduced into the cab, affecting the comfort of the occupants.

In order to improve the above-mentioned technical problems, the prior art adopts the following methods:

The first is to use film to block the drainage holes. This method prevents air from flowing into the drainage holes. During the driving process of the car, no noise will be generated and the comfort of the driver and passengers will not be affected. However, after the drain hole is blocked, the accumulated water in the door cannot be discharged, and the accumulated water will easily corrode the door and affect the normal use of the door.

The second is to use door sealing strips or body dust strips for sealing, that is, when the door is closed, the sealing strips or dust strips are squeezed to seal the drainage holes, so that no noise will be generated during the driving process of the car; when the door is opened When the sealing strip or dust strip is no longer squeezed, the drain hole is opened, which can remove the accumulated water in the door. However, this method has specific requirements on the location of the drainage holes, and the drainage holes need to be set close to the sealing strips and dustproof strips; moreover, due to the different specifications of the sealing strips and dustproof strips, the drainage holes in the actual model The level of sealing varies.

The third type is that a plane forming a small angle with the vertical plane is arranged on the lower bottom of the inner door of the vehicle, and a liquid leakage hole is arranged on the plane, and the small angle is an angle greater than 0 degrees and less than 12 degrees. In this way, the bottom of the door is still easy to accumulate liquid, which cannot be discharged through the leakage hole, resulting in electrochemical corrosion of the bottom, that is, the residual liquid inside the door generates the electrochemical scene of the inner panel of the door - rainwater (corrosion medium) - the outer panel, This leads to galvanic corrosion, the direct consequence of which will be the corrosion of the inner cavity of the car door, and because the corrosion risk cannot be identified from the outside, it is often discovered that the corrosion of the sheet metal penetrates to the outer panel before being noticed. Over time, the sheet metal rusts and penetrates the sheet metal, and it does not improve the wind noise during driving.

Based on this, the prior art still needs to be improved.

SUMMARY OF THE INVENTION

A technical problem to be solved by the embodiments of the present disclosure is to provide a vehicle door inner panel, a vehicle door and a vehicle, so as to solve the problems of wind noise and corrosion of the water leakage hole of the vehicle door in the prior art.

An embodiment of the present disclosure provides an inner door panel, which includes a connecting portion, a transition portion, and a side wall, wherein the connecting portion is connected to the bottom of the outer door panel, and the transition portion is moved away from the connecting portion to the side. One side of the door outer panel is extended and formed, and the side wall is formed by the transition portion extending upward and away from the direction of the vehicle door outer panel;

Wherein, the transition part is provided with a first water leakage hole, and the lower part of the side wall is provided with a second water leakage hole.

Further, the second water leakage hole is arranged at a position close to the transition portion.

Further, the first water leakage holes and the second water leakage holes are matched one by one, and the centers of the matched first water leakage holes and the second water leakage holes are on the same vertical plane.

Further, the sum of the opening areas of the matched set of the first water leakage holes and the second water leakage holes is not less than 72 mm ² and not more than 90 mm ² .

Further, the sum of the opening areas of all the first water leakage holes and the second water leakage holes is not less than 144 mm ² .

Further, the second water leakage hole is an oblong structure, and the long waist of the oblong structure is arranged along the front and rear directions of the vehicle door.

Further, on the vertical section of the middle of the second water leakage hole, the upper edge of the second water leakage hole is farther from the vehicle door outer panel than the lower edge of the second water leakage hole.

Further, the side wall is recessed toward the direction of the door outer panel at the lower edge of the second water leakage hole.

Further, the side wall protrudes in a direction away from the door outer panel at the upper edge of the second water leakage hole.

Further, there is a first dislocation angle between the sectional plane where the lower edge of the second water leakage hole is located and the tangential plane where the upper edge of the second water leakage hole is located.

Further, the first dislocation angle is 10°-20°.

Further, the first water leakage hole is circular.

Further, the number of the first water leakage holes is at least two, which are respectively arranged at the front end and the rear end of the inner door panel.

Further, along the direction from the front of the vehicle to the rear of the vehicle, the side wall is provided with a boss in front of the second water leakage hole.

Further, the boss is smoothly raised along the direction from the front of the vehicle to the rear of the vehicle.

Further, the middle part of the transition part is a horizontal plane, and the first water leakage hole is arranged on the horizontal plane.

An embodiment of the present disclosure provides a vehicle door, comprising the above-mentioned inner door panel and outer door panel, the outer door panel is bent inward at the bottom to form a connection groove, and the connection portion of the inner door panel is placed in the connection groove and fill the gap between the connecting portion and the door outer panel with welding seam sealant, and apply spot welding sealant at the junction between the inner side of the connecting portion and the vehicle door outer panel.

Further, the upper part of the welding seam sealant on the outer side of the connecting part is also coated with anti-rust wax.

Further, the level of the upper surface of the anti-rust wax is not lower than the height of the first water leakage hole.

A vehicle provided by an embodiment of the present disclosure is characterized by comprising the above-mentioned inner door panel.

Based on the vehicle door inner panel, vehicle door and vehicle provided by the above-mentioned embodiments of the present disclosure, the first water leakage hole and the second water leakage hole are respectively provided in the transition part and the lower part of the side wall, so that the number of openings is increased, and the unit area of the openings is reduced. , to reduce high-frequency noise to intermediate frequency and improve NVH performance; by determining the location of the two water leakage holes, the water can be discharged faster; at the same time, the shape of the water leakage holes is further improved to further improve the water discharge speed; By setting the boss, the drainage capacity is increased and the wind noise is reduced.

The technical solutions of the present disclosure will be further described in detail below through the accompanying drawings and embodiments.

Description of drawings

The accompanying drawings, which form a part of the specification, illustrate embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure.

The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, wherein:

1 is a rear view of a vehicle door according to an embodiment of the disclosure;

2 is a front view of a vehicle door according to an embodiment of the disclosure;

Fig. 3 is a detailed view of part B in Fig. 1;

Fig. 4 is the sectional view of A-A in Fig. 2 and Fig. 3;

FIG. 5 is a structural diagram of a first water leakage hole of a vehicle door inner panel according to an embodiment of the disclosure;

6 is a structural diagram of a second water leakage hole of an inner door panel according to an embodiment of the disclosure;

FIG. 7 is a schematic structural diagram of a vehicle door according to an embodiment of the disclosure.

Detailed ways

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

Those skilled in the art can understand that terms such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different steps, devices, or modules, etc., and neither represent any specific technical meaning, nor represent any difference between them. the necessary logical order of .

It should also be understood that, in the embodiments of the present disclosure, "a plurality" may refer to two or more, and "at least one" may refer to one, two or more.

It should also be understood that any component, data or structure mentioned in the embodiments of the present disclosure can generally be understood as one or more in the case of no explicit definition or contrary indications given in the context.

In addition, the term "and/or" in the present disclosure is only an association relationship to describe associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in the present disclosure generally indicates that the related objects are an "or" relationship.

It should also be understood that the description of the various embodiments in the present disclosure emphasizes the differences between the various embodiments, and the same or similar points can be referred to each other, and for the sake of brevity, they will not be repeated.

Meanwhile, it should be understood that, for the convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses in any way.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

As shown in FIGS. 2 to 4 , some embodiments of the present invention disclose an inner door panel 1 , which includes a connecting portion 11 , a transition portion 12 and a side wall 13 , wherein the connecting portion 11 is connected to the outer door of the vehicle. The bottom of the panel 2 is connected, the transition portion 12 is formed by the connecting portion 11 extending to the side away from the door outer panel 2 , the side wall 13 is upward from the transition portion 12 and away from the door outer panel 2; wherein, the transition part 12 is provided with a first water leakage hole 14, and the lower part of the side wall 13 is provided with a second water leakage hole 15. In this embodiment, the first water leakage hole 14 and the second water leakage hole 15 are respectively arranged in the transition part 12 and the lower part of the side wall 13 to increase the number of openings, so that the single area of the openings is reduced, and the high-frequency noise is reduced to an intermediate frequency. Improve NVH performance. At the same time, by setting the first water leakage hole in the connecting part, it is ensured that the rainwater and other liquids in the inner bottom of the vehicle door can be drained, and the corrosion of the inner cavity of the vehicle door caused by the residual liquid is avoided.

Specifically, according to the Helmz resonant cavity principle, it can be simplified as a system consisting of a cavity and a tube. When the external pressure pushes the air in the tube to move, the air in the cavity is compressed, and then It expands again, and pushes the air in the tube to move. The frequency of the Helmz resonator can be expressed as

Among them, V is the volume of the chamber, A is the cross-sectional area of the pipe, and L is the length of the pipe; for the door cavity, A is the opening area of the water flow hole, L is the wall thickness of the inner plate of the opening, and V is the inside of the door. volume of the cavity. It can be seen that the frequency can be effectively reduced by reducing A, that is, the area of the opening when the other is basically impossible to change or the cost of modification is large. Generally, the wind noise of this water flow hole is high-frequency noise. The harsh high-frequency wind noise is reduced to mid-frequency noise. Although the number of openings has doubled, passengers are sensitive to harsh high-frequency noise and are more receptive to mid-frequency noise, so the design can greatly improve the NVH performance.

As shown in FIGS. 1-6 , in the vehicle door inner panel 1 disclosed in some embodiments of the present invention, the second water leakage hole 15 is arranged at a position close to the transition portion 12 . The transition part 12 is gradually inclined upward and inward at its end, so that the lower part of the side wall has a certain angle of inclination, and part of the liquid flowing down from the upper part flows out of the second leakage hole 15 to reduce the water outlet pressure of the first leakage hole 14, so that the The time the liquid stays at the bottom of the door is shortened, extending the life of the door.

In the vehicle door inner panel 1 disclosed in some embodiments of the present invention, on the basis of the above-mentioned embodiments, the first water leakage holes 14 and the second water leakage holes 15 are matched one by one, and the first water leakage holes that match each other are matched with each other. The centers of the hole 14 and the second water leakage hole 15 are on the same vertical plane. That is, a first water leakage hole and a second water leakage hole constitute a water leakage hole group. In some specific implementations, the water leakage hole group can be provided with two groups, and one group is provided at the front end of the inner door panel, which is used to make the flow to the inner door panel. The liquid at the front end of the bottom flows out, and the other group is arranged at the rear end of the inner door panel, and is used to flow out the liquid flowing toward the rear end of the bottom of the inner door panel. Specifically, there are at least two first water leakage holes 14 , which are respectively disposed at the front end and the rear end of the inner door panel 1 . As shown in Figure 3, the distance L from the front end and rear end of the door inner panel should be as small as possible under the condition that the process requirements are met. Make sure that the liquid in the door can be drained forwards and backwards. For large-sized doors, three or more groups of water leakage holes can also be opened. Except for the two groups located at the front and rear ends of the door, the other groups can be evenly arranged along the length of the door.

In the vehicle door inner panel 1 disclosed in some embodiments of the present invention, the sum of the opening surfaces of a set of the first water leakage holes 14 and the second water leakage holes 15 that match each other is not less than 72mm ² and not more than 90mm ² . The opening area of all the first water leakage holes 14 and the second water leakage holes 15 is not less than 144 mm ² . For a car door of ordinary size, the opening area can meet the water leakage requirement, and can also ensure that the first water leakage hole and the second water leakage hole have a small enough unit area, so as to effectively eliminate the noise during the operation of the vehicle body.

In the vehicle door inner panel disclosed in some embodiments of the present invention, as shown in FIG. 6 , the second water leakage hole 15 is an oblong structure, an oval-like structure or a capsule-packed structure, and the long waist of the oblong hole structure is along the vehicle door. Arrangement in the front and rear direction. The length of the long waist may be 7-11 mm, preferably 9 mm, and the length of the short waist may be 3-5 mm, preferably 4 mm. As shown in FIG. 5 , the first water leakage hole 14 is preferably circular, with a diameter of 3-4 mm, preferably 3.5 mm. That is, in a group of water leakage holes, the preferred size is that the diameter of the first water leakage hole is 3.5 mm, the long waist of the second water leakage hole is 9 mm, and the short waist is 4 mm. This embodiment can better balance the drainage speed and the wind noise caused by the opening. In some embodiments, the middle portion of the transition portion 12 is a horizontal plane, and the first water leakage hole 14 is disposed on the horizontal plane.

The first water leakage hole is circular, because the drainage performance per unit time is improved due to the pressure and gravity of the accumulated water at the bottom. Specifically, in the case of the same area, the drainage capacity of the bottom opening is large. According to the outflow formula of thin-walled holes, the higher the height of the drainage water surface to the opening in the formula, the greater the drainage flow per unit time, so the design of the opening at the bottom can be Significantly increase the drainage capacity, and at the same time select a circular shape for the bottom opening section. Under the same area, circle > ellipse > square > rectangle > triangle.

The vehicle door inner panel disclosed in some embodiments of the present invention further improves the shape of the second water leakage hole on the basis of the above-mentioned embodiments. As shown in FIG. 4 , the vertical section in the middle of the second water leakage hole 15 The upper edge of the second water leakage hole 15 is farther from the door outer panel 2 than the lower edge of the second water leakage hole 15 . During use, the liquid flowing down from the upper edge can smoothly flow out of the inner panel of the door, and will not continue to flow down to the inner bottom of the door, which enhances the water leakage efficiency of the second water leakage hole and reduces the water leakage pressure of the first water leakage hole.

In order to achieve similar effects to the above-mentioned embodiments, in the vehicle door inner panel 1 disclosed in other embodiments of the present invention, the side wall 13 is located at the lower edge of the second water leakage hole 15 toward the door outer panel 2 . The direction is recessed. Make the water flow from the upper edge smoothly flow out of the inner door panel. In a further preferred embodiment, the side wall 13 protrudes in a direction away from the door outer panel 2 at the upper edge of the second water leakage hole 15 .

In the vehicle door inner panel 1 disclosed in some embodiments of the present invention, as shown in FIG. 4 and FIG. 7 , a first water leakage hole 15 is formed between the cutting plane where the lower edge of the second water leakage hole 15 is located and the cutting plane where the upper edge of the second water leakage hole 15 is located. Offset angle 16. That is, the sheet metal above and below the second water leakage hole 15 is at a certain dislocation angle. Preferably, the first dislocation angle 16 is 10-20 degrees.

In the vehicle door inner panel 1 disclosed in some embodiments of the present invention, in order to further reduce wind noise, the side wall 13 is located in the direction of the second water leakage hole 15 along the direction from which the wind blows, that is, along the direction from the front of the vehicle to the rear of the vehicle. A boss 17 is provided at the front. Specifically, the boss 17 can be smoothly lifted from the side from which the wind blows. It can reduce the path of wind entering the cavity. The distance between the highest point of the boss and the edge of the second water leakage hole is at least 3 mm.

Specifically, the wind noise is generated in the process of "vortex motion-rupture-reflection-reform vortex-rupture", and wind noise can be controlled and reduced as long as this cycle is broken. For example, as shown in the figure below, add a guide plate to the front of the sunroof. The airflow moves along the guide plate, and when it leaves the guide plate, it moves over the cavity and does not enter the body cavity. The airflow passes over the rear end of the sunroof and attaches to the body again. Since the airflow does not enter the body, and there is no wind vibration cycle, the wind vibration noise disappears. Therefore, make a similar artificial boss at the opening position of the side of the inner panel of the vehicle body, preferably 30°-45°, as shown in Figure 4, along the direction of the car, there is an inclination angle of 30°-45°, so that the airflow Moves along the guide plate to reduce the possibility of airflow entering the inner cavity of the door.

As shown in FIG. 4 , some embodiments of the present invention further disclose a vehicle door and a vehicle using the door inner panel of the embodiments of the present disclosure, the door outer panel 2 is bent inward at the bottom to form a connecting groove, and the inner door of the vehicle door The connecting portion 11 of the panel 1 is placed in the connecting groove, and the gap between the connecting portion 11 and the door outer panel 2 is filled with seam sealant 31. The inner side of the connecting portion 11 is connected to the door. Spot welding sealant 32 is applied at the joints of the outer plates 2 . Preferably, the upper portion of the weld sealant 31 on the outer side of the connecting portion 11 is also coated with anti-rust wax 33 . Further preferably, the level of the upper surface of the anti-rust wax 33 is not lower than the height of the first water leakage hole 14 .

For the body with complex structure, various cracks in the inner cavity, inner cavity of structural parts, inner cavity of multi-layer board, etc. are determined by the modeling design in the electrophoresis process that the paint film in some parts is too thin or cannot be painted, and the inner bottom of the door Due to the narrow gap between the radii, the designed electrophoresis thickness is difficult to achieve, so the anti-corrosion performance here is weaker than that of other parts in the inner cavity of the door. The risk of corrosion here is greatly increased due to the accumulation of condensed water caused by the temperature difference between the outer outdoor environment and the cockpit environment in the door, and the consequence is that corrosion is more likely to occur here. In the embodiment of the present invention, the first water leakage hole is formed at the bottom, so as to avoid the possibility of corrosion caused by the accumulation of a large amount of water. Further, the upper and lower sheet metal of the second water leakage hole on the side plate is dislocated at a certain angle, and the water flow can be discharged directly along the inner plate. There is a dislocation, so that the water flow can be discharged along the opening of the inner plate, further avoiding the possibility of water accumulation at the bottom. In order to further improve the anti-corrosion performance, the present invention applies anti-rust wax on the spot welding sealant at the bottom gap between the inner plate and the outer plate in addition to the spot welding sealant and the welding seam sealant by sealing the bottom. , so as to greatly avoid the risk of water accumulation at the bottom at the root.

To sum up, the vehicle door inner panel, vehicle door and vehicle disclosed in the embodiments of the present invention convert the sensitive and harsh high-frequency wind noise into intermediate-frequency noise by reducing the size of a single opening area, thereby reducing the amount of noise in the passenger compartment. It can reduce the noise and improve NVH performance; add a certain angle boss along the direction of wind blowing at the side wall opening, that is, the second leakage hole, to reduce wind noise; the first leakage hole with the bottom opening adopts a circular cross-section opening, Improve the drainage performance under the same area, and at the same time open holes on the side, and the upper and lower sheet metal of the opening parts are dislocated to increase the drainage performance.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments may be referred to each other.

The description of the present disclosure has been presented for purposes of example and description, and is not intended to be exhaustive or to limit the disclosure to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use.

Claims (10)

1. A vehicle door inner plate is characterized by comprising a connecting part, a transition part and a side wall, wherein the connecting part is connected with the bottom of a vehicle door outer plate, the transition part is formed by extending the connecting part to one side far away from the vehicle door outer plate, and the side wall is formed by extending the transition part upwards and far away from the vehicle door outer plate;

the transition portion is provided with a first water leakage hole, and the lower portion of the side wall is provided with a second water leakage hole.

2. The door inner panel according to claim 1, wherein the second water leakage hole is provided at a position near the transition portion.

3. The vehicle door inner panel according to claim 1 or 2, wherein the first water leakage holes and the second water leakage holes are arranged in a one-to-one matching manner, and centers of the first water leakage holes and the second water leakage holes which are matched with each other are on the same vertical surface.

4. The door inner panel according to claim 3, wherein the sum of the opening areas of the first and second water leakage holes of the mutually matching set is not less than 72mm²Not higher than 90mm²。

5. The door inner panel according to claim 3, wherein a sum of opening areas of all of the first water leakage holes and the second water leakage holes is not less than 144mm²。

6. The door inner panel according to claim 1 or 2, wherein the second water leakage hole is an oblong structure having a long waist arranged in a door front-rear direction.

7. A vehicle door, comprising the vehicle door inner panel and the vehicle door outer panel as claimed in any one of claims 1 to 6, wherein the vehicle door outer panel is bent inward at the bottom to form a connecting groove, a connecting portion of the vehicle door inner panel is disposed in the connecting groove, a seam between the connecting portion and the vehicle door outer panel is filled with a welding seam sealant, and a spot welding sealant is applied to a joint of a side of the connecting portion away from the vehicle door outer panel and the vehicle door outer panel.

8. The vehicle door of claim 7, wherein a rust inhibiting wax is further coated on an upper portion of the weld sealant outside the connecting portion.

9. The vehicle door according to claim 8, wherein a level of an upper surface of the rust inhibitive wax is not lower than a height of the first water leakage hole.

10. A vehicle characterized by comprising the door inner panel according to any one of claims 1 to 6.

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