Pop-up sheet mounting part reinforced vehicle body structure

Abstract

To provide a vehicle body structure for reinforcing a pop-up seat mounting portion, which is able to improve the anchor strength of pop-up seat belt by a structure directly connecting a transverse member and a rear side member and is able to further secure a space for a sinking well by forming a cross section of the rear side member into a "U" shape.SOLUTION: A vehicle body structure for reinforcing a pop-up seat mounting portion includes: a pair of rear side members 100 connected to a floor panel of a vehicle body and formed apart from each other; a transverse member 200 formed to have a length corresponding to a distance by which the rear side members are apart, and formed so as to be connected at both ends thereof to respective ends of the upper ends of the rear side members; and a back panel 300 formed in contact with one surface of the transverse member.SELECTED DRAWING: Figure 1a

Description

Technical Field

[0001] The present invention relates to a reinforced vehicle body structure for a pop-up seat mounting portion, and more particularly to a reinforced vehicle body structure for a pop-up seat mounting portion having a direct connection structure between a rear side member and a transverse member, and applying a tailored weld blank (TWB) to a back panel.

Background Art

[0002] Conventional vehicle seats are mounted and supported on a floor panel that constitutes the floor surface of the interior space of the passenger compartment formed by the vehicle body.

[0003] Vehicle seats must be stably mounted and supported on the floor panel so that the seated person can sit and obtain a better sense of stability. For this purpose, conventionally, when mounting a vehicle seat on a floor panel, a separate mounting reinforcement member is used. Among the vehicle seat mounting reinforcement members, there is a seat cross member formed to extend in the width direction of the vehicle and mounted on the floor panel. The outer tip portion of the seat cross member in the width direction of the vehicle is attached to a side chamber inner member formed to extend in the longitudinal direction of the vehicle, and the inner tip portion of the seat cross member in the width direction of the vehicle is attached to the tunnel portion of the floor panel.

[0004] The side chamber member is a vehicle body component located outside in the width direction of the vehicle, and plays a role of absorbing and reducing the impact when a side collision accident of the vehicle occurs. In order to reinforce the rigidity of the side chamber member, a bulkhead is inserted inside the side chamber member.

[0005] Furthermore, a seat mount inner member and a seat mount outer member are applied to mount the vehicle seat. The seat mount outer member has a structure extending in the longitudinal direction of the vehicle and overlaps on the outer tip of the seat cross member, and is attached to the inner surface in the vehicle width direction of the side chamber member. The seat mount inner member also has a structure extending in the longitudinal direction of the vehicle and overlaps on the inner tip of the seat cross member, and the vehicle seat is mounted and supported on the seat mount inner member and the seat mount outer member. The seat mount outer member serves to reinforce the side chamber member and absorb and disperse the impact when a side collision accident of the vehicle occurs. The seat mount inner member serves to disperse the impact energy transmitted through the seat cross member and reinforce the rigidity when a side collision accident of the vehicle occurs.

[0006] The seat cross member is usually made of high-tensile steel plate to cope with the side collision of the vehicle. Since the length of the flange where the seat cross member is adhered to the side chamber member is short and it is difficult to perform welding connection, there are problems such as a decrease in the connection rigidity between the side chamber member and the seat cross member. In addition, by being inserted only locally into the bulkhead and the side chamber member to reinforce the side chamber member, the response to the side collision is not effective, and there are problems such as the joint part of the side chamber member and the seat cross member being easily buckled when a side collision accident of the vehicle occurs.

[0007] On the other hand, generally, a seat belt is used to restrain the driver or passenger when a vehicle collision accident occurs, and prevent them from hitting the vehicle's crash pad or flying out of the vehicle.

[0008] In the conventional seat belt of a rear seat, the three belt tips are connected to tether anchors and bolt-fixed to the left and right sides and the center respectively. Here, since the tether anchor of the center seat belt has a cross member and a plate-shaped reinforcing plate spot-welded vertically to the lower end of the rear floor panel which is a rear seat mounting part, when pulled diagonally upward in front in the same way as in a vehicle collision accident during the strength test of the tether anchor, the welded part of the rear flange of the cross member may break, posing a serious problem to the safety of the passengers. Also, when applying a four-row pop-up sinking seat to the rear of the vehicle, there is an increasing need to ensure the body strength at the lower part of the tailgate opening.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0010] The present invention has been devised to solve the above problems, and an object thereof is to provide a reinforced vehicle body structure for a pop-up seat mounting part that can improve the anchor strength of a pop-up seat belt by a structure that directly connects a transverse member and a rear side member.

[0011] Another object of the present invention is to provide a reinforced vehicle body structure for a pop-up seat mounting part that can further secure a sinking well space by making the cross-section of the rear side member in a "C" shape.

[0012] The object of the present invention is not limited to the objects mentioned above, and other objects of the present invention not mentioned can be understood from the following description and will be more clearly understood from the embodiments of the present invention. Also, the object of the present invention can be realized by the means and combinations thereof disclosed in the claims.

Means for Solving the Problem

[0013] The pop-up seat mounting portion reinforcing vehicle body structure for achieving the object of the present invention described above includes the following configuration.

[0014] According to an embodiment of the present invention, there is provided a pop-up seat mounting portion reinforcing vehicle body structure including a pair of rear side members coupled to a floor panel of a vehicle body and formed to be spaced apart from each other, and a transverse member formed to have a length corresponding to the spacing distance of the rear side members and both ends thereof being formed to be connected to one end portion of the upper end of the rear side members, and a back panel formed to contact along one surface of the transverse member.

[0015] The cross section of the rear side member can have a "C" shape that opens in the outer direction of the vehicle.

[0016] Further, the back panel can include an upper back panel and a lower back panel in the height direction, and the upper back panel can be configured to form a closed cross section by being coupled to the transverse member.

[0017] Further, at least one of the upper back panel or the lower back panel may be a tailored blank.

[0018] Further, the pop-up seat mounting portion reinforcing vehicle body structure can further include a quarter panel located at the upper end of the transverse member, and can further include a pair of first brackets for connecting the transverse member and the quarter panel.

[0019] Further, the pop-up seat mounting portion reinforcing vehicle body structure can further include a pair of second brackets that contact the upper surface of the transverse member at one end portion of the first bracket and connect the transverse member and the quarter panel.

[0020] Further, the second bracket can be formed to have a curvature that decreases in the height direction from one end coupled to the quarter panel to the other end.

[0021] Further, the pop-up seat mounting portion reinforcing vehicle body structure can further include a central reinforcing member that is formed at the center of the back panel and induces a bending deformation mode of the vehicle seat anchor.

Advantages of the Invention

[0022] The present invention can obtain the following effects according to the above-described embodiments and the configurations, connections, and usage relationships described below.

[0023] Provided is a pop-up seat mounting portion reinforcing vehicle body structure capable of improving the anchor strength of a pop-up seat belt by directly connecting a transverse member and a rear side member and applying a tailored blank to a back panel.

[0024] Also provided is a pop-up seat mounting portion reinforcing vehicle body structure capable of further securing a sinking well space by forming the cross-section of the rear side member in a "C" shape.

Brief Description of the Drawings

[0025]

Figure 1a

Figure 1b

Figure 2

Figure 3

Figure 4

DETAILED DESCRIPTION OF THE INVENTION

[0026] Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The embodiments of the present invention can be deformed into various forms, and the scope of the present invention should not be construed as being limited to the following embodiments. These embodiments are provided to more fully explain the present invention to those having average knowledge in the relevant technical field.

[0027] Also, the “upper end” and “lower end” described in the specification are based on the height direction in the drawing.

[0028] In addition, the classification of the component names in this specification into first, second, etc. is for the purpose of distinguishing them because their component names are the same, and it is not necessarily limited to such procedures in the following description.

[0029] When applying a four-row pop-up seat to a conventional vehicle, the vehicle body structure is configured to mount a transverse member in the lateral direction of the back panel and further include a cross member in order to increase the anchor strength of the four-row pop-up seat belt. By connecting the transverse member and the cross member with four seat mount brackets, the transverse member and the cross member are configured to be in contact with a single-material back panel and have a closed cross-section structure.

[0030] Here, the transverse member is formed such that extension portions are connected to both ends and connected to the opening of the tailgate. Also, a back panel reinforcing member for connecting the transverse member extension portion and the rear side member is formed.

[0031] Such a conventional vehicle body structure has a problem that the number of components increases because the rear side member has a "U" - shaped cross - section and the sinking well component is a panel. Also, when evaluating the strength of the four - row seat belt anchor, a load in the vehicle traveling direction is applied to the transverse member, but the structure consisting of the transverse member and the extension part of the transverse member has a problem of insufficient robustness.

[0032] On the other hand, the cross - member is easily deformed by the deformation of the adjacent panel when a load occurs, so the deformation - suppressing force is insufficient. Also, since the number of panels and parts adjacent to the sinking well is large, it is disadvantageous for ensuring surface pressure rigidity, and due to an excessive sealing section, there is a possibility of a watertight problem occurring during a sealing work failure.

[0033] Therefore, it is necessary to improve the robustness of the transverse member in the left - right direction and ensure the connectivity of the cross - member, or to delete the cross - member and apply a reinforcing member to improve the robustness of the seat belt anchorage strength. Also, it is necessary to reduce the number of panels and parts to ensure the sealing robustness of the vehicle body and ensure the vehicle body strength at the lower part of the tailgate opening to improve driving safety.

[0034] Therefore, the pop - up seat mounting part - reinforced vehicle body structure according to an embodiment of the present invention can improve the anchor strength of the pop - up seat belt by directly connecting the transverse member 200 itself and the rear side member 100 and applying a tailored blank to the back panel 300.

[0035] More specifically, FIG. 1a shows a perspective view of a pop - up seat mounting part - reinforced vehicle body structure according to an embodiment of the present invention.

[0036] Referring to FIG. 1a, a pop - up seat mounting part - reinforced vehicle body structure according to an embodiment of the present invention can include a rear side member 100, a transverse member 200, and a back panel 300.

[0037] The rear side member 100 is coupled to the floor panel of the vehicle body and can be provided in a pair at a distance. The rear side member 100 is a vehicle body component located on the outer side in the vehicle width direction and can serve to absorb and reduce the rear impact during a vehicle collision.

[0038] FIG. 1b shows a cross-sectional view including the cross-sectional shape of the rear side member of the pop-up seat mounting portion reinforcing vehicle body structure according to an embodiment of the present invention. Referring to FIG. 1b, the cross-section of the rear side member 100 can be a "C" shape opening in the outer direction of the vehicle. More preferably, by welding one cross-section of the rear side member 100 to the seat structure in the longitudinal direction to remove the welding flange for welding in the height direction, the interior space can be further secured. Thereby, the cushion length of the pop-up seat can be extended and the riding comfort can be improved.

[0039] The transverse member 200 can extend in the lateral direction of the vehicle. The transverse member 200 can be located between a pair of rear side members 100. More specifically, the transverse member 200 can be formed to have a length corresponding to the separation distance of the rear side members 100, and both ends can be formed to be connected to one end of the upper end of the rear side member 100.

[0040] The back panel 300 can be formed to contact along one surface of the transverse member 200. More specifically, the transverse member 200 can be extended in the lateral direction inside the vehicle, and correspondingly, the back panel 300 can be configured to be exposed outside the vehicle.

[0041] Figure 2 shows one end of the tailgate opening of the pop-up seat mounting portion reinforcing vehicle body structure according to an embodiment of the present invention, and a first bracket and a second bracket. Referring to Figure 2, the pop-up seat mounting portion reinforcing vehicle body structure according to an embodiment of the present invention may further include a quarter panel 700 located above and separated from the transverse member 200, and may be further configured to include a pair of first brackets 400 connecting the transverse member 200 and the quarter panel 700.

[0042] The quarter panel 700 can be formed to contact the inner surface of the tailgate when the tailgate is closed. The quarter panel 700 can be the frame of the vehicle body located on both sides of the rear opening when the tailgate is open. The first bracket 400 can be arranged with one side facing the front of the vehicle and coupled to the end of the quarter panel 700.

[0043] The pop-up seat mounting portion reinforcing vehicle body structure according to an embodiment of the present invention may be further configured to include a pair of second brackets 500 that contact the upper surface of the transverse member 200 at one end of the first bracket 400 and connect the transverse member 200 and the quarter panel 700. The second brackets 500 can be formed on both sides of the rear opening when the tailgate is open. The pair of second brackets 500 can be connected to one side surface of the pair of first brackets 400 and can be formed to surround at least a part of the upper surface of the transverse member 200.

[0044] The second bracket 500 can be arranged with one side facing the side of the vehicle and coupled to the end of the quarter panel 700. More specifically, the shape of the second bracket 500 can be configured to have a curvature that decreases in the height direction from one end coupled to the quarter panel 700 to the other end. One side surface of the second bracket 500 faces the inner surface of the vehicle, and the lower surface can be surface-bonded to the transverse member 200 to easily ensure rigidity.

[0045] Figure 3 shows the back panel and the central reinforcing member of the pop-up seat mounting portion reinforcing vehicle body structure according to an embodiment of the present invention, and Figure 4 shows a cross-sectional view taken along line A-A of Figure 1a showing the pop-up seat mounting portion reinforcing vehicle body structure according to an embodiment of the present invention.

[0046] Referring to Figures 3 and 4, the back panel 300 of the pop-up seat mounting portion reinforcing vehicle body structure according to an embodiment of the present invention includes an upper back panel 310 and a lower back panel 320 in the height direction, and the upper back panel 310 can be configured to be coupled to the transverse member 200 to form a closed cross-section. Further, at least one of the upper back panel 310 or the lower back panel 320 can be a tailored blank.

[0047] The upper back panel 310 can have a higher strength than the lower back panel 320, and the upper back panel 310 can extend in the vehicle width direction together with the transverse member 200 and be coupled thereto. In a state where the transverse member 200 and the upper back panel 310 are coupled, the cross-section can form a closed cross-section.

[0048] The tailored blank is obtained by a method in which steel plates having different thicknesses, strengths, or materials are cut to an appropriate size and then welded together with a laser or the like to form a single steel plate, and is mainly used for reinforcing parts of a vehicle body.

[0049] Since the upper back panel 310 or the lower back panel 320 of the present invention is processed by the TWB method, the weight of the vehicle body can be reduced without using a reinforcing member for connecting metal plates. The upper back panel 310 and the lower back panel 320 can be formed by welding together steel plates having different thicknesses, that is, a relatively thin sheet and a relatively thick plate.

[0050] Referring to FIG. 4, the pop-up seat mounting portion reinforcing vehicle body structure according to an embodiment of the present invention may be configured to further include a central reinforcing member 600 formed at the center of the back panel and inducing a bending deformation mode of the seat anchor of the vehicle.

[0051] More specifically, the central reinforcing member 600 may be formed at the center of the upper back panel 310. The cross-section of the central reinforcing member 600 may be located inside the closed cross-section in a state where the transverse member 200 and the upper back panel 310 are coupled. The cross-section of the central reinforcing member 600 along the line A-A may have a shape corresponding to the upper back panel 310.

[0052] In summary, the present invention can improve the anchor strength of the pop-up seat belt by a structure that directly connects the transverse member 200 and the rear side member 100, and can further secure a sinking well space by forming the cross-section of the rear side member 100 in a "C" shape, and provides a pop-up seat mounting portion reinforcing vehicle body structure.

[0053] The above detailed description illustrates the present invention. Also, the foregoing content illustrates and describes a preferred embodiment of the present invention, and the present invention can be used in various other combinations, changes, and environments. That is, changes or modifications are possible within the scope of the concept of the invention disclosed in this specification, the scope equivalent to the foregoing disclosure, and / or the scope of the technology or knowledge in the relevant field. The foregoing embodiments illustrate the best state for embodying the technical idea of the present invention, and various changes required for the specific application fields and uses of the present invention are also possible. Therefore, the above detailed description of the invention is not intended to limit the present invention to the foregoing implementation states. Also, the appended claims should be construed to include other embodiments.

Description of Reference Numerals

[0054] 100 Rear side member 200 Transverse member 300 Back panel 310 Upper Back Panel 320 Lower Back Panel 400 First Bracket 500 Second Bracket 600 central reinforcement 700 quarter panel

Claims

1. a pair of rear side members connected to a floor panel of the vehicle body and spaced apart from each other; a transverse member having a length corresponding to the spacing distance of the rear side members, and both ends of the transverse member being connected to one end of the upper ends of the rear side members; a back panel formed along and in contact with one surface of the transverse member; a quarter panel located at an upper end of the transverse member; a pair of first brackets connecting the transverse member and the quarter panel; A pop-up seat mounting portion reinforcing vehicle body structure including a pair of second brackets in contact with one end of the first bracket and an upper surface of the transverse member.

2. 2. The pop-up seat mounting portion reinforcing vehicle body structure according to claim 1, wherein the cross section of the rear side member has a U-shape that opens toward the outside of the vehicle.

3. The back panel includes an upper back panel and a lower back panel in a height direction, 2. The pop-up seat mounting portion reinforced vehicle body structure according to claim 1, wherein the upper back panel is configured to be joined to the transverse member to form a closed cross section.

4. 4. The pop-up seat mounting portion reinforced vehicle body structure according to claim 3, wherein at least one of the upper back panel and the lower back panel is a tailored blank.

5. A pop-up seat mounting portion reinforced body structure as described in claim 1, wherein the pair of second brackets connect the transverse member and the quarter panel.

6. 2. The vehicle body structure according to claim 1, wherein the second bracket has a curvature that decreases in height from one end connected to the quarter panel to the other end.

7. 2. The pop-up seat mounting portion reinforced vehicle body structure according to claim 1, further comprising a central reinforcement member formed in the center of the back panel for inducing a bending deformation mode of a seat anchor of the vehicle.

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