CN211592728U - Rear floor of vehicle - Google Patents
Rear floor of vehicle Download PDFInfo
- Publication number
- CN211592728U CN211592728U CN201922278669.8U CN201922278669U CN211592728U CN 211592728 U CN211592728 U CN 211592728U CN 201922278669 U CN201922278669 U CN 201922278669U CN 211592728 U CN211592728 U CN 211592728U
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- wall portion
- bottom wall
- vehicle
- rib
- bead
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- 238000003466 welding Methods 0.000 claims abstract description 32
- 239000011324 bead Substances 0.000 claims description 43
- 210000003205 muscle Anatomy 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model provides a rear bottom plate of vehicle. A storage recess for storing a spare tire is formed in a rear floor of the vehicle, the storage recess having a bottom wall portion, a side wall portion, and a rib formed by bulging a part of the bottom wall portion and a part of the side wall portion toward an inner side of the storage recess, a jack bracket is provided at a lower side of the storage recess, the jack bracket is disposed at a boundary portion between the bottom wall portion and the side wall portion and is joined to an outer bottom surface of the bottom wall portion by spot welding, and the rib includes a first rib extending in a vehicle length direction on the bottom wall portion; and a second rib extending on the bottom wall portion in the vehicle length direction to the side wall portion and spaced from the first rib at a predetermined interval, wherein a welding point between the jack bracket and the outer bottom surface of the bottom wall portion is located at a position separated from the first rib and overlapped with the second rib. Based on the above structure of the utility model, can ensure the rigidity of back bottom plate, can prevent again that the welding point from peeling off.
Description
Technical Field
The utility model relates to a rear bottom plate of vehicle.
Background
In general, a vehicle is provided with a rear floor that constitutes a part of a vehicle body floor and is formed with a storage recess for storing a spare tire. The receiving concave portion is mostly formed with a convex rib. The rib is formed by making a part of the bottom wall and the side wall of the receiving recess bulge towards the inner side of the receiving recess.
By forming the above-described ribs, the rigidity of the rear floor can be improved. The rigidity of the rear bottom plate is improved, and the stuffy sound (low frequency and oppressive sound) generated in the automobile in the state that the engine is directly connected with the transmission (locking) can be reduced.
However, when the rigidity of the rear floor is high, if the spare tire bumps (vibrates) up and down while the vehicle is running on an uneven road, the vibration is easily transmitted to other portions of the vehicle body floor. As a result, the load is likely to concentrate on the welding point of the jack bracket joined to the rear floor of the vehicle by spot welding, and the welding point may be peeled off.
SUMMERY OF THE UTILITY MODEL
To the technical problem, an object of the utility model is to provide a can ensure the rigidity, can prevent again that the load from concentrating on the welding point of jack support when jolting from top to bottom at the spare tire and lead to the rear floor of the vehicle that the welding point peeled off.
In order to solve the above-described problems, the present invention provides a rear floor for a vehicle, the rear floor constituting a part of a floor and having a storage recess formed therein for storing a spare tire, the storage recess having a bottom wall portion, a side wall portion connected to the bottom wall portion, and a bead formed by bulging a part of the bottom wall portion and a part of the side wall portion toward an inner side of the storage recess, wherein a jack bracket is provided outside the storage recess, the jack bracket being disposed at a boundary portion between the bottom wall portion and the side wall portion and joined to an outer bottom surface of the bottom wall portion by spot welding, the rear floor comprising: the rib includes a first rib extending in the vehicle length direction on the bottom wall portion; and a second rib extending on the bottom wall portion in the vehicle length direction up to the side wall portion and spaced apart from the first rib at a predetermined interval in the vehicle length direction, a welding point between the jack bracket and an outer bottom surface of the bottom wall portion being located at a position separated from the first rib and overlapping the second rib.
The utility model discloses an advantage of the back bottom plate of above-mentioned vehicle lies in, because the welding point between the outer bottom surface of jack support and end wall portion lies in the position that separates and overlap with first protruding muscle and with the protruding muscle of second, so when can ensure the rigidity of back bottom plate, when the spare tire jolts from top to bottom, the vibration is difficult to transmit the welding point between the outer bottom surface of jack support and end wall portion on, therefore the load is difficult to concentrate and is used in on the welding point, can prevent that the condition that the welding point peeled off from taking place.
Additionally, the utility model discloses an in the rear floor of above-mentioned vehicle, the preferred does, first protruding muscle with the respective car length direction's of second protruding muscle central line coincides mutually, the protruding muscle of second compares first protruding muscle more is located the front side of car length direction. With this configuration, the rigidity of the storage recess can be improved by the first ribs and the second ribs, and the jack bracket is disposed on the side of the rear floor closer to the front side of the vehicle, so that the jack bracket is less likely to be affected by the vibration of the spare tire on the rear side of the jack bracket, and the separation of the welding point can be effectively prevented.
Additionally, in the rear floor of the above-mentioned vehicle, preferably, the middle part of the concave portion is provided with a spare tire frame for fixing the spare tire, and when looking down from the vehicle top, the spare tire frame overlaps with the first rib. With this configuration, since the bead and the spare tire carrier are arranged such that the spare tire carrier overlaps the first bead when viewed from above the vehicle, the spare tire carrier can be supported by the portion where the first bead is formed and the strength is improved, and the welding point of the jack bracket is located on the lower side of the second bead separated from the first bead, so that the welding point can be effectively prevented from peeling.
Drawings
Fig. 1 is a bottom view of a rear floor of a vehicle according to an embodiment of the present invention.
Fig. 2A is a schematic view showing a deformation state of the rear floor of the vehicle according to the above embodiment.
Fig. 2B is a schematic view showing a deformation state of the rear floor of the vehicle according to the above embodiment.
Fig. 3 is a bottom view showing a rear floor panel of a vehicle according to the related art.
Fig. 4A is a schematic view showing a state of deformation of a rear floor of a vehicle according to the related art.
Fig. 4B is a schematic view showing a state of deformation of a rear floor of a vehicle according to the related art.
Detailed Description
Hereinafter, a rear floor of a vehicle according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is a bottom view showing a rear floor panel 100 of a vehicle according to the present embodiment. In the following drawings, the direction of arrow F indicates the front of the vehicle in which the rear floor 100 is provided; the direction of arrow B represents the rear of the vehicle; the direction of arrow R represents the right of the vehicle; the direction of arrow L represents the left of the vehicle and the direction of arrow U represents the upper of the vehicle; the direction of arrow D indicates the underside of the vehicle.
As shown in fig. 1, the rear floor 100 constitutes a part of a vehicle body floor of a vehicle, and can house (accommodate) a spare tire (not shown). The rear floor 100 of the vehicle includes a storage recess 10, a bead 50, a jack bracket 70, and a spare tire frame 80.
The housing recess 10 is configured to be recessed downward of the vehicle, thereby configuring a space for accommodating a spare tire. The housing recess 10 has a bottom wall 20 and a side wall 30.
The bottom wall portion 20 constitutes a bottom of the housing recess 10. The front edge of the bottom wall portion 20 in the vehicle longitudinal direction is formed in an arc shape corresponding to the shape of the spare tire.
The side wall 30 is continuous with the bottom wall 20 and forms a side portion of the storage recess 10. A virtual line RL in fig. 1 indicates a ridge line as a boundary between the bottom wall portion 20 and the side wall portion 30.
The rib 50 is provided to ensure rigidity of the rear floor panel 100. The rib 50 is formed by bulging a part of the bottom wall portion 20 and the side wall portion 30 inward of the housing recess 10. The bead 50 extends in the vehicle length direction. As shown in fig. 1, a virtual line L passing through the center of the housing recess 10 and extending in the vehicle length direction is a center line of the bead 50 in the vehicle length direction.
More specifically, the bead 50 has a first bead 51 and a second bead 52, and a dividing portion 55 is formed between the first bead 51 and the second bead 52.
The first bead 51 is formed on the bottom wall portion 20 and extends in the vehicle length direction (virtual line L). The second bead 52 extends from the bottom wall portion 20 to the side wall portion 30 in the vehicle length direction (virtual line L) at a position closer to the vehicle front side than the first bead 51. The second bead 52 and the first bead 51 overlap each other at their center lines (virtual lines L) in the vehicle length direction when viewed from above the vehicle.
The dividing portion 55 is located between the first rib 51 and the second rib 52, and is a portion where the bottom wall portion 20 is not raised inward of the housing recess 10. Thus, the dividing portion 55 divides the bead 50 into two parts. In other words, the second bead 52 is spaced apart from the first bead 51 by a predetermined interval in the vehicle length direction.
The jack stand 70 is a portion for lifting a jack when the vehicle is serviced. The jack mount 70 is provided below the storage recess 10 and is disposed at the boundary between the bottom wall 20 and the side wall 30.
The jack stand 70 and the outer bottom surface of the bottom wall portion 20 are welded together by spot welding. Here, the spot-welded portion between the jack stand 70 and the outer bottom surface of the bottom wall portion 20 is used as the welding point 75. The welding point 75 is located at a position separated from the first bead 51 and overlapping the second bead 52. Further, the welding point 75 between the jack stand 70 and the bottom wall portion 20 is separated from the divided portion 55.
The spare tire carrier 80 is used to fix a spare tire accommodated in the accommodation recess 10. The spare tire carrier 80 is provided on a virtual line L in the middle of the bottom wall 20 of the housing recess 10. Therefore, the spare tire carrier 80 overlaps the bead 50 (first bead 51) when viewed from above the vehicle.
Fig. 2A and 2B are schematic views showing a deformed state of the rear floor 100. Fig. 2A shows a cross section of the first rib 51, the second rib 52, the dividing portion 55, and the vicinity of the jack bracket 70. Fig. 2B is a schematic diagram showing the area AR1 in fig. 2A in an enlarged manner.
In fig. 2A and 2B, solid lines show the shapes of the first bead 51, the second bead 52, the dividing portion 55, and the jack stand 70 before deformation; the broken lines indicate the state in which these members are deformed by the vertical pitching (vibration) of the spare tire. In fig. 2A and 2B, the amount of deformation in the vertical direction is shown in an enlarged manner with respect to the amount of deformation in the horizontal direction.
As shown in fig. 2A and 2B, when the spare tire jounces vertically, the bottom wall portion 20 deforms greatly. As the bottom wall portion 20 deforms, the side wall portion 30 and the jack mount 70 also deform.
As shown in fig. 2B, the first bead 51 and the divided portion 55 formed on the bottom wall portion 20 are largely deformed upward from an end portion (i.e., the front end portion 551) of the divided portion 55 located forward in the vehicle length direction. On the other hand, the amount of deformation of the second bead 52, which is located further toward the vehicle front side than the front end 551, is much smaller than the amount of deformation of the first bead 51.
In particular, in the region (region AR11) where the welding point 75 between the jack stand 70 and the outer bottom surface of the bottom wall portion 20 (second bead 52) is located, although deformation in the vertical direction occurs, deformation such that the bottom wall portion 20 (second bead 52) bends and the welding point 75 peels off does not occur.
This is because the vibration of the spare tire is transmitted to the first bead 51 via the spare tire carrier 80, but the deformation of the first bead 51 is not easily transmitted to the second bead 52 because the split portion 55 exists between the first bead 51 and the second bead 52. That is, since the divided portion 55 is not raised toward the inside of the housing recess 10, the rigidity is low and becomes a starting point of deformation, and vibration energy is absorbed, so that vibration transmitted to the second bead 52 is greatly reduced.
Therefore, when the spare tire jounces up and down, the load is not easily concentrated on the welding point 75 of the jack stand 70, so that the welding point 75 can be prevented from peeling off.
As a comparative example, a description will be given below of a state of deformation of the rear floor panel 200 adopting a conventional structure.
Fig. 3 is a bottom view showing a rear floor panel 200 of a related art vehicle. As shown in fig. 3, the rear floor panel 200 includes a receiving recess 110, a rib 150, a jack bracket 170, and a spare tire carrier 180. The accommodation portion 110 has a bottom wall portion 120 and a side wall portion 130.
The rib 150 is configured to extend in the vehicle longitudinal direction, but a dividing portion that divides the rib 150 is not formed as in the rear floor panel 100 of the present embodiment. In other words, in the rear floor 200 of the related art, the rib 150 extends from the bottom wall portion 120 to the side wall portion 130.
The jack stand 170 is joined to the outer bottom surface of the bottom wall portion 120 by spot welding. The welding point 175 between the jack stand 170 and the bottom wall portion 120 is located at a position overlapping the rib 150.
Fig. 4A and 4B are schematic views showing a state of deformation of the rear floor 200 according to the related art. FIG. 4A shows a cross-section of the rib 150, and near the jack stand 170; fig. 4B is a schematic diagram showing the area AR2 in fig. 4A in an enlarged manner.
In fig. 4A and 4B, solid lines indicate the shapes of the rib 150 and the jack stand 170 before deformation; the broken lines indicate the state in which these members are deformed by the vertical pitching of the spare tire. In fig. 4A and 4B, the amount of deformation in the vertical direction is shown in an enlarged manner with respect to the amount of deformation in the horizontal direction.
As shown in fig. 4A and 4B, the bottom wall portion 120 is largely deformed in the case where the spare tire jounces vertically. Further, the side wall portion 130 and the jack mount 170 are deformed as the bottom wall portion 120 is deformed.
As shown in fig. 4B, the rib 150 formed on the bottom wall portion 120 is largely deformed from the boundary portion between the bottom wall portion 120 and the side wall portion 130. In particular, in the region (region AR21) where the spot welding point 175 between the jack bracket 170 and the bottom wall portion 120 (rib 150) is located, the jack bracket 170 deforms downward, and the bottom wall portion 120 (rib 150) deforms upward. As a result, the load is concentrated on the welding point 175 in the rear chassis 200, and the welding point 175 is peeled off.
As described above, according to the rear floor 100 of the vehicle of the present embodiment, it is possible to prevent the weld point 75 of the jack stand 70 from being peeled off due to the load concentrated on the weld point 75 when the spare tire jounces vertically while ensuring the rigidity of the rear floor 100 of the vehicle.
The present invention is not limited to the description of the above embodiments, and can be modified as appropriate. For example, the shapes of the first rib 51, the second rib 52, and the jack bracket 70 may be changed arbitrarily, and are not limited to the shapes in the present embodiment.
Claims (3)
1. A rear floor of a vehicle, the rear floor constituting a part of a vehicle body floor and having a storage recess formed therein for storing a spare tire, the storage recess having a bottom wall portion, a side wall portion continuous with the bottom wall portion, and a bead formed by bulging a part of the bottom wall portion and a part of the side wall portion inward of the storage recess, a jack bracket being provided below the storage recess, the jack bracket being disposed at a boundary portion between the bottom wall portion and the side wall portion and joined to an outer bottom surface of the bottom wall portion by spot welding, characterized in that:
the convex rib comprises
A first rib extending in the vehicle length direction on the bottom wall portion; and
a second bead extending on the bottom wall portion in the vehicle length direction up to the side wall portion and spaced apart from the first bead by a predetermined interval in the vehicle length direction;
and the welding point between the jack support and the outer bottom surface of the bottom wall part is positioned at a position which is separated from the first convex rib and overlapped with the second convex rib.
2. A rear floor panel for a vehicle according to claim 1, wherein:
the first convex rib and the second convex rib are overlapped with each other at the central line in the vehicle length direction, and the second convex rib is more positioned at the front side in the vehicle length direction than the first convex rib.
3. The rear floor of a vehicle according to claim 1 or 2, characterized in that:
a spare tire carrier for fixing the spare tire is provided at a middle portion of the accommodating recess, and the spare tire carrier overlaps the first bead when viewed from above the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278669.8U CN211592728U (en) | 2019-12-17 | 2019-12-17 | Rear floor of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278669.8U CN211592728U (en) | 2019-12-17 | 2019-12-17 | Rear floor of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211592728U true CN211592728U (en) | 2020-09-29 |
Family
ID=72593206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922278669.8U Active CN211592728U (en) | 2019-12-17 | 2019-12-17 | Rear floor of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211592728U (en) |
-
2019
- 2019-12-17 CN CN201922278669.8U patent/CN211592728U/en active Active
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