CN210122135U - Vehicle lower structure - Google Patents
Vehicle lower structure Download PDFInfo
- Publication number
- CN210122135U CN210122135U CN201920285229.2U CN201920285229U CN210122135U CN 210122135 U CN210122135 U CN 210122135U CN 201920285229 U CN201920285229 U CN 201920285229U CN 210122135 U CN210122135 U CN 210122135U
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- vehicle
- floor
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- joined
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- 239000010426 asphalt Substances 0.000 claims abstract description 42
- 230000001629 suppression Effects 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
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- Body Structure For Vehicles (AREA)
Abstract
The utility model provides a vehicle substructure. The vehicle lower structure includes a floor panel, and a plurality of members having hat-shaped cross sections joined to the floor panel, and asphalt sheets for completely covering a plurality of areas are provided in the areas surrounded by a plurality of upper side frames and a plurality of cross members on the upper surface of the floor panel. Based on the utility model discloses a vehicle substructure can the noise suppression spread to the car indoor.
Description
Technical Field
The utility model relates to a vehicle substructure.
Background
In the prior art, a floor panel as a lower member of a vehicle is usually joined to various frame members, for example, side frames extending in a vehicle length direction. The side frame is formed of a member having a hat-shaped cross section, and a closed cross-sectional structure is formed between the member and the floor panel by engagement with the floor panel.
In the vehicle lower portion structure, noise may be generated in the space of the closed cross-sectional structure due to air column resonance. Further, the noise is transmitted into the vehicle interior, which gives an uncomfortable feeling to the occupant. Further, the vibration of the floor accompanying the vibration of the vehicle body or the like also causes noise, and this noise is transmitted into the vehicle interior to give an uncomfortable feeling to the occupant. In recent years, a popular electric vehicle has a higher environmental demand (including a low noise demand) for the vehicle interior than an internal combustion engine-driven vehicle, and therefore measures for suppressing the propagation of the noise are required.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a vehicle lower structure that can suppress noise from propagating into a vehicle interior.
As a technical solution to solve the above technical problem, the present invention provides a vehicle lower portion structure including a floor panel; and a plurality of upper side frames which are joined to the upper surface of the vehicle bottom plate, extend in the vehicle length direction and have hat-shaped cross sections, and a plurality of cross members which extend in the vehicle width direction and have hat-shaped cross sections, characterized in that: asphalt sheets are respectively arranged in a plurality of areas on the upper surface of the vehicle bottom plate, which are surrounded by the upper side frame and the cross beam.
The utility model discloses an above-mentioned vehicle substructure's advantage lies in, can the noise suppression spread to the vehicle cabin. More specifically, since the asphalt sheet having a sound insulating function is provided on the upper surface of the floor panel, it is possible to suppress the noise generated at the floor panel and the peripheral portion thereof from being transmitted into the vehicle interior. Further, the amount of the asphalt sheet to be used can be limited to a minimum required amount. Specifically, since noise caused by vibration of the floor can be blocked by the asphalt sheet provided on the upper surface of the floor, the asphalt sheet is provided only in the region other than the joint position of the upper side frame and the cross member, that is, only on the upper surface of the floor surrounded by the upper side frame and the cross member, and thus the effect of effectively suppressing the propagation of noise can be obtained. Therefore, with this structure, the amount of the asphalt sheet to be used can be limited to a desired minimum.
In addition, in the vehicle lower section structure of the present invention, it is preferable that the thickness dimension of the asphalt sheet is set in a region close to the driver seat side and is larger than the thickness dimension of the asphalt sheet set in a region away from the driver seat side. With this configuration, the effect of suppressing the propagation of noise to the driver seat side can be improved. Specifically, the driver of the vehicle always takes a person in the driver seat regardless of whether the driver drives the vehicle alone or the driver takes one vehicle with many persons. Therefore, by increasing the thickness of the asphalt sheet provided in the region of the floor panel closer to the driver's seat, the noise suppression effect in the region where the occupant is located can be increased.
In addition, in the above vehicle lower section structure of the present invention, preferably, the asphalt sheet covers the plurality of regions completely, respectively.
Drawings
Fig. 1 is a plan view showing a vehicle lower section structure according to an embodiment of the present invention.
Fig. 2 is a bottom view showing the vehicle lower portion structure.
Fig. 3 is a perspective view for explaining an operation of mounting the asphalt sheet and the battery pack on the floor panel.
Fig. 4 is a bottom view showing a vehicle lower part structure equipped with a battery pack.
Fig. 5 is a plan view of the front floor.
Fig. 6 is a plan view showing a vehicle lower portion structure in a state where the asphalt sheet is provided.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a case where the vehicle lower structure of the present invention is applied to an electric vehicle will be described.
Fig. 1 is a plan view showing a vehicle lower portion structure according to the present embodiment. Fig. 2 is a bottom view showing the vehicle lower portion structure. In fig. 1 and 2, arrow FR indicates the vehicle body front side; arrow LH indicates the left side of the vehicle body; arrow RH indicates the right side of the vehicle body.
As shown in fig. 1 and 2, the vehicle lower portion structure of the present embodiment includes a floor panel 1 that constitutes a floor of a vehicle compartment. The vehicle bottom panel 1 is joined to the side members 2 at both ends in the vehicle width direction. Each side member 2 extends in the vehicle length direction.
The floor panel 1 is formed by integrally joining a dashboard lower panel 12, a front floor 11, a middle floor 13, and the like. Specifically, the front end edge of the front floor 11 is joined to the dash lower panel 12, and the rear end edge of the front floor 11 is joined to the middle floor 13.
An upper frame 3 extending in the vehicle length direction is joined to each of both sides (inward in the vehicle width direction from each side member 2) in the vehicle width direction of the upper surface of the floor panel 1. Each upper frame 3 is formed of a member having a hat-shaped cross section that opens downward, and is joined to the upper surface of the floor panel 1, whereby a closed cross-sectional structure is formed between the upper frame 3 and the floor panel 1. The upper frames 3 are joined to the floor panel 1 over the entire range from the dash panel 12 to the front floor 11.
Each upper frame 3 includes: a first frame portion 31 having a front end joined to the dash panel 4 and extending in the vehicle length direction; a second frame portion 32 extending rearward of the vehicle body from a rear end of the first frame portion 31 and inclined outward in the vehicle width direction; and a third frame portion 33 extending rearward of the vehicle body from a rear end of the second frame portion 32.
Similarly, a lower frame 5 extending in the vehicle length direction is joined to each of both sides in the vehicle width direction of the lower surface of the floor panel 1 (the inner side in the vehicle width direction than each of the side members 2). Each lower frame 5 is formed of a member having a hat-shaped cross section which is open upward, and is joined to the lower surface of the floor panel 1, whereby a closed cross-sectional structure is formed between the lower frame 5 and the floor panel 1. The lower frames 5 are joined to the floor panel 1 over the entire range from the dash panel 12 to the front floor 11.
The shape of the lower frame 5 substantially conforms to the shape of the upper frame 3. That is, each lower frame 5 also includes: a first frame portion 51 extending in the vehicle length direction; a second frame member 52 extending rearward of the vehicle body from a rear end of the first frame member 51 and inclined outward in the vehicle width direction; and a third frame portion 53 extending rearward of the vehicle body from a rear end of the second frame portion 52. Each first frame portion 51 extends forward of the dash panel 4, and extends in the vehicle length direction on both sides in the vehicle width direction of a motor unit compartment (a housing space for housing a motor unit), not shown.
A plurality of cross members 61, 62, 63, 64 extending in the vehicle width direction are joined to the upper surface of the floor panel 1. These cross members 61, 62, 63, 64 are a first cross member 61, a second cross member 62, a third cross member 63, and a rear cross member 64 provided in this order from the vehicle front side.
The first cross member 61 extends in the vehicle width direction, and is over the rear end portions of the second frame portions 32 of the respective two upper side frames 3, and is joined to the upper surface of the front floor 11. Further, both ends of the first cross member 61 in the vehicle width direction are joined to the corresponding side members 2, respectively.
The second cross member 62 extends in the vehicle width direction, is laid over the vehicle length direction intermediate portion of the third frame portion 33 of each of the two upper side frames 3, and is joined to the upper surface of the front floor 11. Further, both ends of the second cross member 62 in the vehicle width direction are also joined to the corresponding side members 2, respectively.
The third cross member 63 extends in the vehicle width direction rearward of the rear end portions of the third frame portions 33 of the respective two upper frames 3, and is joined to the upper surface of the middle floor 13. Further, both ends of the third cross member 63 in the vehicle width direction are also joined to the corresponding side members 2.
The rear cross member 64 includes a horizontal portion 65 joined to the upper surface of the center floor 13, and two vertical portions 66 extending upward from both ends of the horizontal portion 65 in the vehicle width direction and joined to a wheelhouse lining of each front wheel, not shown.
The first cross member 61, the second cross member 62, and the third cross member 63 are each formed of a member having a hat-shaped cross section that opens downward, and are joined to the upper surface of the floor panel 1 to form a closed cross-sectional structure with the floor panel 1. The horizontal portion 65 and the vertical portions 66 of the rear cross member 64 are each formed of a member having a hat-shaped cross section, and the horizontal portion 65 is joined to the upper surface of the center floor 13, and the vertical portions 66 are joined to the inner side surfaces of the corresponding wheel house liners, respectively, thereby forming a closed cross-sectional structure between the center floor 13 and the wheel house liners.
In addition, two floor reinforcement members 7 extending in the vehicle length direction are joined to the front side of the first cross member 61 on the upper surface of the floor panel 1. Each floor reinforcement member 7 is formed of a member having a hat-shaped cross section that opens downward, and by being joined to the upper surface of the floor 1, a closed cross-sectional structure is formed between the floor reinforcement member 7 and the floor 1. The region between the two floor reinforcement members 7 is a center tunnel portion 18 formed by bending a part of the front floor 11 upward.
The battery pack 8 (see fig. 3) is supported on the lower side of the floor panel 1. The battery pack 8 is constituted by a battery (a lithium ion battery as a secondary battery) housed in a case 81. The battery stores electric power for supplying an electric motor (not shown) for driving the electric vehicle to travel.
Fig. 3 is a perspective view for explaining an installation operation of installing the asphalt sheets 91 to 96 and the battery pack 8 described later on the floor panel 1, and fig. 4 is a bottom view showing a lower structure of the vehicle on which the battery pack 8 is installed. As shown in fig. 3 and 4, the battery pack 8 is disposed on a plate-shaped battery support plate 82, and the battery support plate 82 is attached (fixedly connected) to the lower frames 5 on both sides, whereby the battery pack 8 is supported on the lower side of the floor panel 1.
Specifically, the battery support plate 82 includes a plurality of (9 in the present embodiment) lateral plates 83 extending in the vehicle width direction, and a plurality of (3 in the present embodiment) vertical plates 84 connecting the lateral plates 83 to each other and extending in the vehicle length direction. The battery support plates 82 are mounted on the lower frames 5 on both sides by overlapping and fastening both ends of each cross plate 83 in the vehicle width direction with the lower surface of the corresponding lower frame 5 by bolts. Of the 9 cross plates 83, 6 cross plates 83 located on the vehicle front side are disposed below the front floor 11, and 3 cross plates 83 located on the vehicle rear side are disposed below the middle floor 13.
The vehicle lower portion structure of the present embodiment is characterized mainly in that asphalt sheets 91 to 96 (see fig. 3) are provided on the upper surface of the front floor 11. Before describing the arrangement structure of the asphalt sheets 91 to 96, the structure of the front floor 11 will be described.
Fig. 5 is a plan view of the front floor 11. As shown in fig. 5, the front floor 11 is made of a plate material. The front floor 11 includes two side frame joint portions 14 serving as joint portions to be joined to the upper frame 3 and the lower frame 5 on each side. Each side frame joint 14 has a flat upper surface and a flat lower surface, and has a shape in plan view that matches the shape of the upper frame 3 and the lower frame 5 (the shape of each of the first frame portions 31, 51, the second frame portions 32, 52, and the third frame portions 33, 53).
The front floor 11 includes a first cross member joint portion 15 as a joint portion to be joined to the first cross member 61, and a second cross member joint portion 16 as a joint portion to be joined to the second cross member 62. The upper and lower surfaces of the beam joint portions 15 and 16 are flat surfaces and extend in the vehicle width direction.
In the front floor 11, a region between the first beam joint portion 15 and the front end edge of the front floor 11, a region between the first beam joint portion 15 and the second beam joint portion 16, and a region between the second beam joint portion 16 and the rear end edge of the front floor 11 are each formed in a wave plate shape. By forming a part of the front floor 11 in a wave plate shape, the strength of the front floor 11 can be improved.
Further, one suction portion 17 is provided on each of both sides in the vehicle width direction in the vicinity of the rear end edge of the front floor 11, and is circular in plan view. Each suction portion 17 is a portion for allowing a vacuum cup (shown by a virtual line in fig. 6) to be sucked and held when the front floor 11 is formed. Therefore, each suction portion 17 is formed in a circular shape having a diameter larger than the outer diameter of the vacuum cup, and has a flat upper surface. Further, since the upper surface of the first beam joint portion 15 is a flat surface as described above, both ends of the upper surface of the first beam joint portion 15 in the vehicle width direction can also be portions to be sucked and held by the vacuum cups.
FIG. 6 is a plan view showing a vehicle lower part structure in a state where asphalt sheets 91 to 96 are provided. As shown in fig. 6, asphalt sheets 91 to 96 are provided on the upper surface of the wave plate-shaped region of the front floor 11. The asphalt sheets 91 to 96 are sheets having a thickness of about 2 to 3mm and containing known components such as talc, calcium carbonate and rubber.
Specifically, the asphalt sheets 91 to 96 are provided in the area below the upper surface of the floor panel 1.
The arrangement area of the asphalt sheet 91 is: a region surrounded by the upper side frame 3 on the right side in the vehicle width direction, the floor reinforcement member 7 on the right side in the vehicle width direction, and the first cross member 61, that is, a region indicated by a reference character a1 in fig. 1.
The arrangement area of the asphalt sheet 92 is: a region surrounded by the upper side frame 3 on the left side in the vehicle width direction, the floor reinforcement member 7 on the left side in the vehicle width direction, and the first cross member 61, that is, a region indicated by a reference character a2 in fig. 1.
The arrangement areas of the asphalt sheet 93 are: a region surrounded by the upper side frame 3 on the right side in the vehicle width direction, the right side portion in the vehicle width direction of the first cross member 61, and the right side portion in the vehicle width direction of the second cross member 62, that is, a region indicated by a reference character a3 in fig. 1.
The arrangement area of the asphalt sheet 94 is: a region surrounded by the upper side frame 3 on the left side in the vehicle width direction, the left side portion in the vehicle width direction of the first cross member 61, and the left side portion in the vehicle width direction of the second cross member 62, that is, a region indicated by a reference character a4 in fig. 1.
The arrangement area of the asphalt sheet 95 is: a region surrounded by the upper side frame 3 on the right side in the vehicle width direction, the right side portion in the vehicle width direction of the second cross member 62, and the right side portion in the vehicle width direction of the third cross member 63, that is, a region indicated by a reference character a5 in fig. 1.
The arrangement area of the asphalt sheet 96 is: a region surrounded by the upper side frame 3 on the left side in the vehicle width direction, the left side portion in the vehicle width direction of the second cross member 62, and the left side portion in the vehicle width direction of the third cross member 63, that is, a region indicated by a reference character a6 in fig. 1.
By providing the asphalt sheets 91 to 96 in the respective areas a1 to a6 in this manner, the sound insulating function of the asphalt sheets 91 to 96 can suppress the noise generated in the floor panel 1 and the surrounding areas thereof from propagating into the vehicle interior. Specifically, in the space having the closed cross-sectional structure formed between the floor panel 1 and the frames 3 and 5 and the cross members 61, 62, and 63, noise may be generated by air column resonance and may be transmitted into the vehicle interior. Further, the vibration of the floor panel 1 caused by the vibration of the vehicle body or the like causes noise, and the noise is also transmitted into the vehicle interior. In contrast, in the present embodiment, the asphalt sheets 91 to 96 are provided in the areas a1 to a6, respectively, and the asphalt sheets 91 to 96 can block the noise, thereby suppressing the noise from being transmitted into the vehicle interior and providing a quiet environment for the vehicle interior.
Among the asphalt sheets 91 to 96, the asphalt sheets 91 and 93 provided in the area closer to the driver's seat are set to have a larger thickness than the asphalt sheets 92 and 94 to 96 provided in the area farther from the driver's seat (for a vehicle on the right side of the steering wheel). For example, the thickness dimension of the asphalt sheets 92, 94 to 96 is set to 2m m, and the thickness dimension of the asphalt sheets 91, 93 is set to 3 mm. This can improve the noise suppression effect in the area (the area around the driver's seat) where the occupant is often present.
In the present embodiment, the asphalt sheets 91 to 96 are provided only in a plurality of areas of the upper surface of the floor panel 1 surrounded by the upper frames 3 and the cross members 61, 62, and 63, and completely cover the plurality of full areas. Therefore, the amount of the asphalt sheets 91 to 96 used can be limited to a minimum required amount, and the propagation of noise into the vehicle interior can be effectively suppressed.
In the above-described embodiments, the case where the vehicle lower portion structure of the present invention is applied to an electric vehicle has been described, but the present invention is not limited thereto. The utility model discloses a vehicle substructure also is applicable to by internal-combustion engine driven car, and by electric motor and internal-combustion engine driven hybrid vehicle.
In another embodiment, the asphalt sheets 91 to 96 may be provided not only on the upper surface of the front floor 11 but also to cover the upper frames 3 and the cross members 61, 62, and 63.
In addition, the vehicle lower portion structure of the present invention is also applicable to a vehicle lower portion structure of an automobile driven by an electric motor and an internal combustion engine.
Claims (3)
1. A vehicle lower portion structure includes a floor; and a plurality of upper side frames which are joined to the upper surface of the vehicle bottom plate, extend in the vehicle length direction and have hat-shaped cross sections, and a plurality of cross members which extend in the vehicle width direction and have hat-shaped cross sections, characterized in that:
asphalt sheets are respectively arranged in a plurality of areas on the upper surface of the vehicle bottom plate, which are surrounded by the upper side frame and the cross beam.
2. The vehicle lower part structure according to claim 1, characterized in that:
the thickness dimension of the asphalt sheet provided in the region close to the driver's seat side is larger than the thickness dimension of the asphalt sheet provided in the region away from the driver's seat side.
3. The vehicle lower portion structure according to claim 1 or 2, characterized in that:
the asphalt sheet completely covers the plurality of areas, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920285229.2U CN210122135U (en) | 2019-03-06 | 2019-03-06 | Vehicle lower structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920285229.2U CN210122135U (en) | 2019-03-06 | 2019-03-06 | Vehicle lower structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210122135U true CN210122135U (en) | 2020-03-03 |
Family
ID=69631924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920285229.2U Active CN210122135U (en) | 2019-03-06 | 2019-03-06 | Vehicle lower structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210122135U (en) |
-
2019
- 2019-03-06 CN CN201920285229.2U patent/CN210122135U/en active Active
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