undercasing structure

Abstract

The present application provides a bottom cover structure, which can improve work quality and efficiency, and has good aerodynamic performance and structural rigidity. The bottom cover structure comprises a cover body part formed with a cutout, and a cover part covering the cutout and integrally formed with the cover body part, wherein the cover part is connected to the cover body part in an openable and closable manner through a first hinge part, and the cover part comprises a flange part extending to a side of the cover body part closer than the edge of the cutout, and the flange part is fixedly overlapped with the cover body part in the thickness direction of the cover body part when the cover part is in a closed state.

Description

Technical Field

[0001] This invention relates to a bottom cover structure. Background Technology

[0002] In recent years, research and development related to improving fuel efficiency, which contributes to energy efficiency, has been carried out in order to ensure access to affordable, reliable, sustainable and advanced energy for more people.

[0003] In the prior art, prior art document 1 discloses a chassis cover with an opening formed of resin material, and a cover capable of opening and closing the opening, and a thin-walled portion provided on the side of the opening as a hinge. However, in prior art document 1, two slits are also provided from the front end to the rear end of the chassis cover, and the opening and cover are formed in the portion sandwiched between the two slits. Therefore, although the structure of prior art document 1 allows for vehicle maintenance without removing the chassis cover by forming a cover that can be opened and closed together with the hinge, the slit structure provided at the boundary between the cover and the chassis cover, as described in prior art document 1, leads to deterioration of aerodynamic performance and thus affects fuel efficiency. Furthermore, since the slit in prior art document 1 does not have a solid structure for fixing the cover and chassis cover within it, it is difficult to ensure the rigidity of the chassis cover. Therefore, it is an important task to research and develop a chassis cover structure that allows for in-vehicle maintenance without removal while ensuring aerodynamic performance and structural rigidity.

[0004] This case aims to solve the aforementioned problem in order to improve fuel efficiency. Furthermore, it contributes to overall energy efficiency.

[0005] [Existing technical documents]

[0006] [Patent Literature]

[0007] [Patent Document 1] Japanese Utility Model Publication No. H04-84088 Summary of the Invention

[0008] This invention provides a bottom cover structure that can improve work quality and efficiency, and has good aerodynamic performance and structural rigidity.

[0009] The present invention provides a bottom cover structure. The bottom cover structure includes: a cover body portion having a cutout; and a cover portion covering the cutout and integrally formed with the cover body portion, wherein the cover portion is connected to the cover body portion in an openable and closable manner via a first hinge portion, and the cover portion includes a flange portion extending to a side of the cover body portion further than the edge of the cutout. When the cover portion is in a closed state, the flange portion overlaps and is fixed to the cover body portion in the thickness direction.

[0010] In one embodiment of the present invention, the cover portion further includes a body portion, and the body portion and the flange portion are connected in an openable and closable manner via a second hinge portion.

[0011] In one embodiment of the present invention, when the cover is in the closed state, the cover body and the main body of the cover are aligned on the outer surface of the vehicle.

[0012] In one embodiment of the present invention, the cover portion is formed with a recess that is recessed into the inside of the vehicle. When the cover portion is in the closed state, the flange portion is overlapped with the recess and fixed.

[0013] In one embodiment of the present invention, the cut is formed into a U-shaped profile with an open end by means of a first side, a second side and a third side, wherein the first side forms a first hinge portion, the second side extends from one end of the first side to the end of the cover portion, the third side extends from the other end of the first side to the end of the cover portion, and the flange portion includes a first flange portion and a second flange portion, the first flange portion extends to the side closer to the cover portion than the second side, and the second flange portion extends to the side closer to the cover portion than the third side.

[0014] In one embodiment of the invention, a suspension is mounted on the side of the tire, and with the underbody structure mounted on the vehicle body, a cutout is formed at a position where the toe-adjustment mechanism of the suspension can be operated.

[0015] In one embodiment of the present invention, a suspension mounting opening is formed on the aforementioned underbody structure, and the cutout and the suspension mounting opening are continuously formed in the length direction of the vehicle body.

[0016] In one embodiment of the present invention, the above-mentioned cuts are formed corresponding to the suspensions located on the left and right sides of the vehicle body, respectively.

[0017] Based on the above, in the embodiments of the present invention, the cover portion of the bottom cover structure is integrally connected to the cover body portion in an openable and closable manner via a first hinge portion. When the opening formed by the cut is not needed, the cover portion can close the opening. Furthermore, when the cover portion is closed, the flange portion overlaps and is fixed to the cover body portion in the thickness direction, thus firmly fixing the cover portion to the cover body portion of the bottom cover structure, thereby not adversely affecting aerodynamic performance during operation. Moreover, since the cover portion and the cover body portion can be integrally formed, there is no need to manufacture the cover portion separately. Also, since the flange portion overlaps and is fixed to the cover body portion when the cover portion is closed, there is no gap between the cover portion and the cover body portion when the cover portion is closed, thereby improving aerodynamic performance and increasing overall rigidity, thus firmly holding the cover portion in place. Furthermore, even when the cover portion is moved to open the opening formed by the cut for maintenance needs, the cover portion remains connected to the cover body portion via the first hinge portion, so the cover portion will not be lost even when maintenance or other work is performed.

[0018] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1A This is a perspective view of a bottom cover structure according to an embodiment of the present invention;

[0020] Figure 1B yes Figure 1A A bottom view of the bottom cover structure with the cover in the open position;

[0021] Figure 1C yes Figure 1B An enlarged schematic diagram of the cover;

[0022] Figure 1D yes Figure 1A The diagram shows the bottom cover structure in the closed state;

[0023] Figure 1E yes Figure 1D A cross-sectional view of the cover along line AA;

[0024] Figure 2A yes Figure 1A A schematic diagram of the cover portion of the bottom cover structure during molding;

[0025] Figure 2B yes Figure 2A The diagram shows a cross-sectional view of the cover along line BB.

[0026] Figure 3A yes Figure 1A The diagram shown illustrates the underbody structure when it is installed on the vehicle body and the cover is in the open position.

[0027] Figure 3B yes Figure 1A The diagram shows a cross-sectional view of the underbody structure installed on the vehicle body with the cover in the closed state.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100: Base structure

[0030] 110: Cover body section

[0031] 111: concave part

[0032] 120: cover

[0033] 121: Flange portion

[0034] 122: Ontology Department

[0035] 121a: First flange portion

[0036] 121b: Second flange portion

[0037] HG1: First hinge section

[0038] HG2: Second hinge section

[0039] NH: Incision

[0040] OP: Suspension mounting opening

[0041] S1: First side

[0042] S2: Second side

[0043] S3: Third side

[0044] SP: Suspension

[0045] TS: Toe angle adjustment mechanism. Detailed Implementation

[0046] Figure 1A This is a perspective view of a bottom cover structure according to an embodiment of the present invention; Figure 1B yes Figure 1A A bottom view of the bottom cover structure with the cover in the open position; Figure 1C yes Figure 1B An enlarged schematic diagram of the cover; Figure 1D yes Figure 1A The diagram shows the bottom cover structure in the closed state; Figure 1E yes Figure 1D A cross-sectional view of the cover along line AA; Figure 2A yes Figure 1A A schematic diagram of the cover portion of the bottom cover structure during molding; Figure 2B yes Figure 2A The diagram shows a cross-sectional view of the cover along line BB. Figure 3A yes Figure 1A The diagram shown illustrates the underbody structure when it is installed on the vehicle body and the cover is in the open position. Figure 3B yes Figure 1A The diagram shows a cross-sectional view of the underbody structure installed on the vehicle body with the cover closed. In this embodiment, the underbody structure 100 is shown as an example of a bottom structure located near the rear tires and suspension in a vehicle. However, the invention is not limited to this; in other embodiments, the underbody structure 100 may also be a bottom structure located near the front tires and suspension in a vehicle. The following will refer to Figures 1 to 100. Figure 3B The specific structure of the base cover structure 100 is described.

[0047] Specifically, such as Figures 1A to 1EAs shown, in this embodiment, the bottom cover structure 100 includes a cover body 110 and a cover portion 120, wherein the cover body 110 has a cutout NH, and the cover portion 120 covers the cutout NH and is integrally formed with the cover body 110. Further, as... Figures 1B to 1D As shown, in this embodiment, the cover portion 120 is connected to the cover portion 110 in an openable and closable manner via the first hinge portion HG1, and the cover portion 120 includes a flange portion 121 and a body portion 122, with the flange portion 121 extending to the side of the cover portion 110 that is closer to the edge of the cutout NH than the edge of the cover portion 110.

[0048] Thus, as Figure 1D As shown, the cover 120 is integrally connected to the cover body 110 via a first hinge portion HG1 in an openable and closable manner. When the opening formed by the cutout NH is not needed, the cover 120 can close the opening. When the cover 120 is in the closed state, the flange portion 121 can overlap and fix with the cover body 110 in the thickness direction, so that the cover 120 can be firmly fixed to the cover body 110 of the bottom cover structure 100, thereby not adversely affecting the aerodynamic performance during operation. Furthermore, since the flange portion 121 overlaps and is fixed with the cover body 110 when the cover 120 is closed, there is no gap between the cover 120 and the cover body 110 when the cover 120 is closed, thereby improving aerodynamic performance and increasing overall rigidity, thus firmly holding the cover 120 in place. Furthermore, even when the cover 120 is moved to open the opening formed by the cut NH due to maintenance needs, the cover 120 can still remain connected to the cover body 110 via the first hinge part HG1, so the cover 120 will not be lost even when it is opened for maintenance or other work.

[0049] On the other hand, such as Figure 1D and Figure 1E As shown, in this embodiment, the body portion 122 and the flange portion 121 of the cover portion 120 are connected in an openable and closable manner via the second hinge portion HG2. For example, the first hinge portion HG1 and the second hinge portion HG2 may be thin-walled portions and have extensibility to serve as hinge portions. Furthermore, as... Figure 2A and Figure 2B As shown, in this embodiment, when forming the bottom cover structure 100, the configuration of the second hinge portion HG2 allows the flange portion 121 of the cover portion 120 of the bottom cover structure 100 to be positioned relative to each other. Figure 2BThe cover 120 is formed at an angle that facilitates its formation without interfering with the cover portion 110, as shown, thus ensuring formability. Furthermore, with the above configuration, the cover portion 120 and the cover portion 110 can be integrally formed, eliminating the need to manufacture the cover portion 120 separately. Moreover, by providing a second hinge portion HG2 on the cover portion 120 to open or close the flange portion 121 of the cover portion 120, the flange portion 121 of the cover portion 120 can be bent to overlap with the cover portion 110 during vehicle assembly, thereby improving aerodynamic performance without compromising formability.

[0050] In addition, please refer to again Figure 1C In this embodiment, the cutout NH is formed into a U-shaped profile with an open end by means of a first side S1, a second side S2, and a third side S3. The first side S1 forms a first hinge portion HG1, the second side S2 extends from one end of the first side S1 to the end of the cover portion 110, and the third side S3 extends from the other end of the first side S1 to the end of the cover portion 110. On the other hand, the flange portion 121 includes a first flange portion 121a and a second flange portion 121b. The first flange portion 121a extends closer to the cover portion 110 than the second side S2, and the second flange portion 121b extends closer to the cover portion 110 than the third side S3. Furthermore, as... Figure 1C As shown, in this embodiment, the cover portion 110 has a recess 111 that is recessed towards the inside of the vehicle, thus, as Figure 1D As shown, when the cover 120 is in the closed state, the flange 121 can be overlapped with the recess 111 and fixed, for example, by using a fastener such as a self-tapping screw. Furthermore, the cover 120 can be securely fixed to the cover body 110 of the bottom cover structure 100 by means of a U-shaped cutout NH, on which a first side S1 with a first hinge portion HG1 is formed, and a second side S2 and a third side S3 are formed at both ends of the first side S1. The first flange portion 121a and the second flange portion 121b of the flange 121 are respectively formed on the second side S2 and the third side S3. In addition, in this embodiment, the matching thickness configuration of the recess 111 and the flange 121 reduces the height difference at the overlap between the cover body 110 and the cover 120, further improving aerodynamic performance.

[0051] In addition, such as Figure 1E As shown, in this embodiment, when the cover 120 is in the closed state, the cover body 110 and the main body 122 of the cover 120 are aligned on the outer surface of the vehicle. Thus, since the cover body 110 and the main body 122 of the cover 120 are aligned on the outer surface of the vehicle, the aerodynamic performance of the cover structure 100 will not deteriorate even if the cover structure 100 is provided with a ridge.

[0052] Next, as Figure 3A and Figure 3B As shown, in this embodiment, a suspension mounting opening OP is formed on the underbody structure 100. The cutout NH and the suspension mounting opening OP are continuously formed in the length direction of the vehicle body, and the cutout NH corresponds to the suspension SP located on the left and right sides of the vehicle body, respectively. Thus, as... Figure 3A As shown, with the underbody structure 100 mounted on the vehicle body and the cover 120 in the open state, the cutout NH is formed at a position that allows operation of the toe angle adjustment mechanism TS of the suspension SP mounted on the side of the tire. Here, toe angle refers to the difference between the distance between the leading and trailing edges of two coaxial tires, or the angle between the centerlines of the two wheel surfaces.

[0053] Thus, as Figure 3A As shown, since the underbody structure 100 has cutouts NH corresponding to the suspension SPs located on the left and right sides of the vehicle body and is equipped with covers 120, the toe adjustment mechanism TS can be operated without removing the underbody structure 100, thereby improving work quality and efficiency. Furthermore, as... Figure 3B As shown, even near the suspension SP where airflow is easily disturbed, the cutout NH can be sealed with the cover 120 after operation, so aerodynamic performance will not deteriorate even if the cutout NH, which serves as an operation hole, is provided. Furthermore, since the cutout NH is formed continuously with the suspension mounting opening OP, it is easy to adjust the toe angle of the suspension SP. Also, even near the suspension SP where airflow is easily disturbed, the cover 120 and the cover body 110 can be firmly fixed when the cover 120 is closed, preventing it from falling off due to wind pressure.

[0054] In summary, in the embodiments of the present invention, the cover portion of the bottom cover structure is integrally connected to the cover body portion in an openable and closable manner via a first hinge portion. When the opening formed by the cut is not needed, the cover portion can close the opening. Furthermore, when the cover portion is closed, the flange portion overlaps and is fixed to the cover body portion in the thickness direction, thus firmly fixing the cover portion to the cover body portion of the bottom cover structure, thereby preventing any adverse impact on aerodynamic performance during operation. Moreover, since the cover portion and the cover body portion can be integrally formed, there is no need to manufacture the cover portion separately. Also, because the flange portion overlaps and is fixed to the cover body portion when the cover portion is closed, there is no gap between the cover portion and the cover body portion when the cover portion is closed, thereby improving aerodynamic performance and enhancing overall rigidity, thus firmly holding the cover portion in place. Furthermore, even when the cover portion is moved to open the opening formed by the cut for maintenance purposes, the cover portion remains connected to the cover body portion via the first hinge portion, so the cover portion will not be lost even when maintenance or other work is performed.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bottom cover structure, characterized by, include: The cover body has cuts; as well as The cover portion, which covers the cut, is integrally formed with the cover body portion. The cover portion is connected to the housing portion in an openable and closable manner via a first hinge portion, and the cover portion includes a flange portion that extends to the housing portion further than the edge of the cut. When the cover is in the closed state, the flange overlaps and is fixed to the cover in the thickness direction of the cover.

2. The under cover structure of claim 1, wherein, The cover also includes a body portion, which is connected to the flange portion in an openable and closable manner via a second hinge portion.

3. The under cover structure of claim 1, wherein, When the cover is in the closed state, the cover body and the main body of the cover are aligned on the outer surface of the vehicle.

4. The under cover structure of claim 1, wherein, The cover portion has a recess that is recessed into the inside of the vehicle. When the cover portion is in the closed state, the flange portion is overlapped with the recess and fixed.

5. The under cover structure of claim 1, wherein, The cut is formed into a U-shaped profile with an open end by a first side, a second side, and a third side, wherein the first side forms a first hinge portion, the second side extends from one end of the first side to the end of the cover portion, the third side extends from the other end of the first side to the end of the cover portion, and the flange portion includes a first flange portion and a second flange portion, wherein the first flange portion extends to the side of the cover portion closer to the second side than the second side, and the second flange portion extends to the side of the cover portion closer to the third side than the third side.

6. The under cover structure of claim 1, wherein, A suspension is mounted on the side of the tire, and with the underbody structure mounted on the vehicle body, the cutout is formed in a position that allows operation of the suspension's toe-adjustment mechanism.

7. The under cover structure of claim 1, wherein, A suspension mounting opening is formed on the underbody structure, and the cut and the suspension mounting opening are continuously formed in the length direction of the vehicle body.

8. The under cover structure of claim 6, wherein, The cuts are formed corresponding to the suspensions located on the left and right sides of the vehicle body, respectively.

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