Vehicle structure

Abstract

To provide a vehicle structure capable of effectively utilizing a dead space and exerting a sound absorption effect.SOLUTION: A vehicle structure includes a skeleton member 12 that is molded as an integral body through die casting and has an open sectional shape having an opening 12A at least in one direction, a liner member 40 interposed between the skeleton member 12 and tires 30 and attached to the skeleton member 12 so that the liner member can form a closed section or semi-closed section together with an open-section region which is at least part of the skeleton member 12, and a sound absorption member 50 disposed within the closed section or semi-closed section.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle structure. [Background technology]

[0002] Patent Document 1 discloses a vehicle structure in which a fender liner has a through-hole and a membrane- or plate-shaped vibrating body is fixed to one surface of the fender liner opposite the tire so as to cover the through-hole. In the vehicle structure described in Patent Document 1, sound is absorbed by resonating sound within an air chamber surrounded by the vibrating body and the fender liner. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-8458 Summary of the Invention [Problem to be solved by the invention]

[0004] While the vibrations and engine noise of conventional internal combustion engines have been replaced by motor noise, with high-frequency sounds becoming dominant, improvements in quietness have made tire noise more noticeable. Meanwhile, with conventional structures, the product appeal of reducing the minimum turning radius by increasing the tire's turning angle is prioritized, limiting the space available for sound-absorbing structures. The vehicle structure described in Patent Document 1 requires space for the installation of a new air chamber, leaving room for improvement in the space available for sound absorption.

[0005] The present invention has been made in view of the above circumstances, and has an object to provide a vehicle structure that can effectively utilize dead space and obtain a sound absorbing effect. [Means for solving the problem]

[0006] The vehicle structure according to the first aspect comprises a skeletal member integrally molded by die casting and having an open cross-sectional shape with an opening in at least one direction, a liner member disposed between the skeletal member and a tire and attached to the skeletal member so as to form a closed cross-section or a quasi-closed cross-section together with at least a portion of the open cross-section of the skeletal member, and a sound-absorbing member disposed within the closed cross-section or the quasi-closed cross-section.

[0007] In the vehicle structure according to the first aspect, the sound-absorbing material is disposed within the closed or quasi-closed cross section formed by the open cross section of the skeletal member when the liner member is attached to the skeletal member between the skeletal member and the tire, eliminating the need for additional space for disposing the sound-absorbing material. This effectively utilizes the dead space formed when the liner member is attached to the skeletal member, and provides a sound-absorbing effect that absorbs noise from the tire, etc. Note that the term "quasi-closed cross section" used here refers to a structure in which the open cross section of the skeletal member and the liner member form a closed cross section, but which does not necessarily result in a completely closed cross section structure; although gaps or openings are formed in some areas, the structure still forms a closed cross section structure overall.

[0008] A vehicle structure according to a second aspect is the configuration according to the first aspect, wherein the sound absorbing member is attached to the liner member.

[0009] In the vehicle structure of the second aspect, the sound-absorbing member is attached to the liner member, so that as noise propagates in the order of the tire, liner member, and open cross section of the skeletal member, resonance and vibration within the closed or quasi-closed cross section formed by the liner member and the open cross section of the skeletal member can be reduced more quickly.

[0010] A vehicle structure according to a third aspect is the same as the first aspect, in which the sound absorbing member is attached to the frame member.

[0011] In the vehicle structure according to the third aspect, since the sound-absorbing member is attached to the frame member, the liner member can be attached to the frame member after the sound-absorbing member is attached to the frame member, thereby improving the workability of attaching the sound-absorbing member.

[0012] A vehicle structure according to a fourth aspect is the configuration according to the first aspect, wherein the sound absorbing member is attached to both the liner member and the framework member.

[0013] In the vehicle structure according to the fourth aspect, the sound absorbing member is attached to both the liner member and the framework member, so that the sound absorbing member can be attached more firmly within the closed or semi-closed cross section.

[0014] A vehicle structure according to a fifth aspect is the configuration according to the first aspect, wherein the sound absorbing member is disposed at a position overlapping the tire in a top view.

[0015] In the vehicle structure of the fifth aspect, the sound-absorbing member is arranged in a position that overlaps with the tire when viewed from above. Therefore, by arranging the sound-absorbing member in an area of ​​the vehicle interior that has a large impact on occupants, the sound-absorbing effect on occupants can be further improved.

[0016] A vehicle structure according to a sixth aspect is the configuration according to any one of the first to fifth aspects, wherein the framework member is a framework portion extending in the front-rear direction of the vehicle within a wheel house.

[0017] In the vehicle structure according to the sixth aspect, the frame member is a frame portion that extends in the fore-and-aft direction of the vehicle within the wheel house, so the sound absorbing member can be disposed over a wider area facing the tire, thereby further improving the sound absorbing effect.

[0018] The vehicle structure according to the seventh aspect is the configuration described in the sixth aspect above, wherein the skeletal member has at least two or more chambers separated by ribs in the vertical direction of the vehicle, and the sound-absorbing member is arranged in an upper chamber of the two or more chambers, including at least the chamber located highest in the vertical direction of the vehicle.

[0019] In a vehicle structure according to a seventh aspect, the frame member has at least two or more chambers partitioned by ribs in the vehicle vertical direction, and sound-absorbing members are disposed in the chambers partitioned by the ribs. Therefore, the sound-absorbing members can be positioned by the ribs. Furthermore, the sound-absorbing members are disposed in at least the upper chambers, including the chamber located at the top of the two or more chambers in the vehicle vertical direction. Therefore, by placing the sound-absorbing members closer to the occupants in the vehicle cabin, the sound-absorbing effect on the occupants can be further improved.

[0020] The vehicle structure according to the eighth aspect is the configuration described in the seventh aspect above, in which the skeletal member has two chambers separated by ribs in the vertical direction of the vehicle, and the sound-absorbing member is arranged in the chamber located at the upper side in the vertical direction of the vehicle.

[0021] In the vehicle structure according to the eighth aspect, since there are two chambers partitioned by ribs in the vertical direction of the vehicle, the sound-absorbing member can be positioned by the ribs. Also, since the sound-absorbing member is disposed in the chamber located at the top in the vertical direction of the vehicle, the sound-absorbing member can be placed closer to the occupants in the vehicle interior, thereby further improving the sound-absorbing effect on the occupants.

[0022] A vehicle structure according to a ninth aspect is the configuration according to the second or fourth aspect, wherein the liner member has a rib on a surface on the side to which the sound absorbing member is attached.

[0023] In the vehicle structure according to the ninth aspect, the liner member has a rib on the surface on which the sound-absorbing member is attached. Therefore, when attaching the sound-absorbing member, the attachment position of the sound-absorbing member can be set by the rib, thereby improving the workability of attaching the sound-absorbing member. [Effects of the Invention]

[0024] As described above, the vehicle structure according to the present invention can effectively utilize dead space and can also achieve a sound absorbing effect. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a perspective view that schematically illustrates an example of a vehicle front structure including a frame member of a vehicle structure according to an embodiment of the present invention. [Figure 2] FIG. 2 is a left side view schematically showing an example of the vehicle front structure of FIG. [Figure 3] 2 is a front cross-sectional view schematically showing an example of the vicinity of a tire in the vehicle front structure of FIG. 1. FIG. [Figure 4] 2 is a side view schematically showing an example of the vicinity of a tire when the tire is mounted in the vehicle front structure of FIG. 1.

[0023] FIG. [Figure 5] FIG. 2 is a bottom view schematically showing an example of the vehicle front structure of FIG. 1. [Figure 6] FIG. 10 is a side view schematically showing a first modification of the mounting position of the sound absorbing member. [Figure 7] FIG. 10 is a side view schematically showing a second modification of the mounting position of the sound absorbing member. [Figure 8] FIG. 10 is a front cross-sectional view of the main part, schematically showing a third modification of the mounting position of the sound absorbing member. [Figure 9] FIG. 10 is a front cross-sectional view of the main part, schematically showing a fourth modified example of the mounting position of the sound absorbing member. DETAILED DESCRIPTION OF THE INVENTION

[0026] A vehicle structure according to an embodiment of the present invention will be described below with reference to the accompanying drawings. In this specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, and redundant description will be omitted. Furthermore, the arrow FR, as appropriately indicated in each drawing, indicates the front side in the vehicle longitudinal direction, and the arrow UP indicates the upper side in the vehicle vertical direction. The arrow LH indicates the left side in the vehicle width direction, and the arrow IN indicates the inner side in the vehicle width direction. Hereinafter, when the terms "front-rear," "up-down," and "left-right" are used in the description, they refer to the front and rear in the vehicle longitudinal direction, the up and down in the vehicle vertical direction, and the left and right in the vehicle horizontal direction (vehicle width direction), unless otherwise specified.

[0027] (Vehicle front structure configuration) First, a configuration of a vehicle front structure 10 will be described as an example of a vehicle structure according to an embodiment of the present invention. FIG.

[0028] 1 schematically shows a vehicle front structure 10 showing the skeleton of the front part of a vehicle. In this embodiment, examples of the vehicle include an electric vehicle (BEV (Battery Electric Vehicle)) that runs on power generated by a power unit, a fuel cell electric vehicle (FCEV (Fuel Cell Electric Vehicle)), a hybrid vehicle (HEV (Hybrid Electric Vehicle)), and a plug-in hybrid electric vehicle (PHEV (Plug-in Hybrid Electric Vehicle)).

[0029] As shown in FIG. 1 , a vehicle front structure 10 includes a pair of left and right front side members 12, which are front frame members of the vehicle and are arranged on both sides of the front of the vehicle in the vehicle width direction. The front side members 12 extend in the vehicle longitudinal direction, and the rear ends of the front side members 12 are connected to a cross member 16. The front ends of the front side members 12 are connected to a front bumper reinforcement (not shown; hereinafter referred to as "bumper RF") arranged along the vehicle width direction. In this embodiment, as an example, the front side members 12 have crash boxes 13 as energy absorbing members at their front ends connected to the bumper RF. Note that in this embodiment, the crash boxes 13 are described as separate parts from the bumper RF, but the two may be configured as an integrated unit. Note that although only the right side crash box 13 is shown in FIG. 1 , in reality, a crash box 13 is also provided on the left side.

[0030] Wheel houses 14 in which tires 30 (see FIG. 3) serving as wheels are arranged are provided on the outer sides of the pair of front side members 12 in the vehicle width direction, and the left and right wheel houses 14 are connected by a cross member 16. The front side members 12 are provided within the wheel houses 14 on extensions of side members (not shown) that form the framework of the lower sides of the vehicle.

[0031] Apron upper members 18 are disposed on the rear sides of the left and right front side members 12, outward in the vehicle width direction and above them in the vehicle up-down direction. The apron upper members 18 are skeletal members that form the framework of the upper sides of the vehicle front structure 10, and extend in the vehicle front-rear direction along the front side members 12. The front side members 12 and the apron upper member 18 each have a substantially rectangular open cross-sectional shape with an opening on the outer side in the vehicle width direction, in other words, a substantially rectangular cross-sectional shape that is open on the outer side in the vehicle width direction. Although the opening in the apron upper member 18 is not shown in the drawings, the apron upper member 18 has an impact absorbing structure, which will be described later, in a manner substantially similar to that of the front side members 12.

[0032] Furthermore, a pair of left and right fender aprons 20 are disposed on the outer sides of the front side members 12 in the vehicle width direction and on the inner sides of the apron upper members 18 in the vehicle width direction. The upper ends of the fender aprons 20 are joined to the apron upper members 18 and the lower ends are joined to the front side members 12, and a suspension tower 22 and a wheel house 14 are integrally formed. The suspension tower 22 is provided above the vehicle on the outer sides of the front side members 12 in the vehicle width direction, and the lower sides of the suspension tower 22 are joined to the fender apron 20. A through hole 22A is provided in the upper end surface of the suspension tower 22, through which the upper end of a suspension (not shown) is disposed. The fender apron 20 is formed to bulge inward in the vehicle width direction, and this bulge portion forms the wheel house 14 in which the tire 30 is housed so as to be able to be steered.

[0033] A dash panel 24 is disposed on the vehicle rear side of the front side members 12 and between the pair of left and right apron upper members 18. The dash panel 24 is a member that separates a space (not shown) that houses the power unit from a passenger compartment (not shown), and extends in the vehicle width direction and the vehicle up-down direction with its plate thickness direction being the vehicle fore-and-aft direction. The dash panel 24 has its widthwise end connected to the fender apron 20 and its upper end connected to the cross member 16.

[0034] A rear end 20A of the fender apron 20 on the rear side of the wheel house 14 in the vehicle longitudinal direction extends along the vehicle longitudinal direction and is connected to a rocker (not shown) that forms the framework of the side of the vehicle body.

[0035] The suspension tower 22 is provided in a generally cylindrical shape and protrudes upward from the wheel house 14 of the fender apron 20 toward the vehicle. Inside the suspension tower 22, shock absorbers and springs that constitute a suspension (not shown) that supports the tires of the front wheels housed in the wheel house 14 are housed.

[0036] 1, the vehicle front structure 10 of this embodiment is formed by integrally molding a pair of front side members 12, wheel houses 14, cross members 16, apron upper members 18, fender apron 20, suspension towers 22, and dash panel 24 by aluminum die casting. The crash boxes 13 may or may not be integrally molded as part of the vehicle front structure 10. The left and right halves of the vehicle front structure 10 may also be integrally molded.

[0037] Next, the impact absorbing structure provided in the front side member 12 will be described. Fig. 2 is a left side view schematically showing an example of the vehicle front structure 10 of Fig. 1. As shown in Figs. 1 and 2, the front side member 12 of this embodiment extends in the vehicle longitudinal direction (the load input direction of the impact load) as described above, and has an opening 12A provided on the outer side in the vehicle width direction. The front side member 12 is configured to include an upper wall portion 121, a lower wall portion 122, and an inner wall portion 123 that is disposed on the inner side in the vehicle width direction and connects the inner ends of the upper wall portion 121 and the lower wall portion 122 in the vehicle width direction.

[0038] In this embodiment, as an example, the front side member 12 is provided with a partition wall 124 as a rib that defines two adjacent chambers in the vertical direction of the vehicle, approximately in the center in the vertical direction of the vehicle. The front side member 12 has two upper and lower chambers, an upper chamber 130 and a lower chamber 132, that are partitioned in the vertical direction of the vehicle by the partition wall 124.

[0039] The front side member 12 also includes a plurality of vertical partition walls 125 arranged in a line in the vehicle longitudinal direction and serving as ribs that define a plurality of chambers in the vehicle longitudinal direction. The front side member 12 has a plurality of chambers partitioned in the vehicle longitudinal direction by the vertical partition walls 125. That is, the upper chamber 130 and the lower chamber 132 each include a plurality of chambers that are lined up in the vehicle longitudinal direction.

[0040] As described above, the front side member 12 has a plurality of chambers arranged in the vehicle longitudinal direction and the vehicle vertical direction. Therefore, when an impact load is input to the front side member 12 (along the vehicle longitudinal direction), a destructive load is generated for each chamber, and impact energy is absorbed in the process.

[0041] Fig. 3 is a front cross-sectional view that schematically shows an example of the vicinity of the tire 30 of the vehicle front structure 10 of Fig. 1. As shown in Fig. 3, the vehicle front structure 10 is provided with a liner member 40 that is disposed between the front side member 12 and the tire 30 and is formed of a plate member. The liner member 40 includes a first liner member 40A that extends in the vehicle up-down direction at a position facing the opening 12A of the front side member 12. The liner member 40 also includes a second liner member 40B that extends from the upper end of the first liner member 40A along the curve within the wheelhouse 14.

[0042] The first liner member 40A is attached so as to form a closed cross section together with the open cross section of the front side member 12. Specifically, the closed cross section is formed by abutting the upper wall portion 121, the lower wall portion 122 of the front side member 12, and the end face of the partition wall 124 on the opening 12A side against a surface 41 of the liner member 40 opposite the tire 30. In this embodiment, the end face of the partition wall 124 on the opening 12A side also abuts against the surface 41 of the liner member 40, but the present invention is not limited to this. The end face of the partition wall 124 does not have to abut against the surface 41 of the liner member 40.

[0043] In addition, in this embodiment, the first liner member 40A is attached so as to form a closed cross section together with the open cross section of the front side member 12, but it does not have to be attached so as to form a strictly closed cross section. For example, it may be attached so as to form a quasi-closed cross section in which gaps, openings, etc. exist in some parts.

[0044] The second liner member 40B faces the inner surface 14A (the surface on the tire 30 side) of the wheel house 14 and is attached so as to leave a space between it and the inner surface 14A. In this embodiment, as shown in FIG. 2, the inner surface 14A is provided with an extended upper wall portion 141, an extended lower wall portion 142, and an extended partition wall 144, which are ribs that extend from the upper wall portion 121, the lower wall portion 122, and the partition wall 124 of the front side member 12, respectively, and are curved along the inner surface 14A. That is, the inner surface 14A of the wheel house 14 also forms two upper and lower compartments that are partitioned in the vehicle vertical direction. Although not shown, a plurality of ribs may be formed above the extended upper wall portion 141 on the inner surface 14A of the wheel house 14, which are formed along the curve of the inner surface 14A.

[0045] The second liner member 40B is attached so as to form a quasi-closed cross section together with the inner surface 14A of the wheel house 14. Here, as shown in Figure 3, a through-hole 22A for the suspension tower 22 is provided in the upper end surface of the fender apron 20 that forms the wheel house 14. Therefore, the cross section formed by the second liner member 40B and the inner surface 14A of the wheel house 14 is a quasi-closed cross section with gaps, openings, etc. in some parts.

[0046] 3, the second liner member 40B has a first rib 42 and a second rib 44 on one surface 41 that protrude toward the inner surface 14A of the wheelhouse 14. The first rib 42 and the second rib 44 are each provided for positioning the sound absorbing member 50, which will be described later, and the positions at which they are disposed will be described in detail later.

[0047] In this embodiment, as shown in FIGS. 2 and 3 , a sound-absorbing member 50 is disposed between the liner member 40 and the inner surface 14A of the wheelhouse 14 and the opening 12A side of the front side member 12. The sound-absorbing member 50 is, for example, made of a resin such as polyester or acrylic, a foam such as rubber, or a porous material such as felt or glass wool. As an example, the sound-absorbing member 50 is disposed in the area indicated by the shaded area A in FIG. 2 . In this embodiment, the sound-absorbing member 50 is attached to the liner member 40 and includes a first sound-absorbing member 52 and a second sound-absorbing member 54. Specifically, the first sound-absorbing member 52 is disposed within a closed cross-section formed by one surface 41 of the first liner member 40A and the open cross-section of the front side member 12, i.e., within the upper chamber 130 that constitutes the closed cross-section, and is attached to one surface 41 of the first liner member 40A.

[0048] The second sound-absorbing member 54 is disposed within a quasi-closed cross section formed by one surface 41 of the second liner member 40B and the inner surface 14A of the wheelhouse 14, i.e., within the space between the one surface 41 and the inner surface 14A that form the quasi-closed cross section, and is attached to the one surface 41 of the second liner member 40B. As shown in Fig. 3, the second sound-absorbing member 54 is attached between a first rib 42 and a second rib 44 for positioning that are provided on the one surface 41 of the second liner member 40B. Fig. 4 is a side view that schematically shows an example of the vicinity of the tire when the tire 30 is mounted on the vehicle front structure 10 of Fig. 1.

[0049] 3 and 4, five first ribs 42, for example, are provided along the curve of the inner surface 14A of the wheelhouse 14 of the second liner member 40B, i.e., along the curve of the outer periphery of the tire 30. Four second ribs 44 are arranged side by side in the vehicle front-to-rear direction above the upper wall portion 121 of the front side member 12. In this embodiment, the second sound-absorbing member 54 is attached to an area surrounded by the five first ribs and four second ribs 44. In other words, the second sound-absorbing member 54 is attached along the inner surface 14A of the wheelhouse 14.

[0050] 4, in this embodiment, the sound absorbing member 50 is disposed in a position facing the upper portion of the tire 30. In other words, the sound absorbing member 50 is disposed in a position overlapping the tire 30 in the vertical direction of the vehicle. The first sound absorbing member 52 and the second sound absorbing member 54 are attached to the liner member 40 with an adhesive, for example. The attachment direction is not limited to adhesive, and any known attachment method can be used.

[0051] (Actions and Effects of This Embodiment) Next, the effects of this embodiment will be described.

[0052] In the vehicle front structure 10 of the present embodiment, when the liner member 40 is attached to the front side member 12, the sound-absorbing member 50 is disposed within the closed or semi-closed cross section formed between the front side member 12 and the tire 30 together with the open cross section of the front side member 12, eliminating the need for additional space for disposing the sound-absorbing member 50. This makes it possible to effectively utilize the dead space formed when the liner member 40 is attached to the front side member 12, and to obtain a sound-absorbing effect that absorbs noise from the tire 30 and the like.

[0053] Furthermore, in the vehicle front structure 10 of this embodiment, the sound-absorbing member 50 is attached to the liner member 40, so that as noise propagates in the order of the tire 30, the liner member 40, and the open cross section of the front side member 12, resonance and vibration within the closed or quasi-closed cross section formed by the liner member 40 and the open cross section of the front side member 12 can be reduced more quickly.

[0054] Furthermore, in the vehicle front structure 10 of this embodiment, the sound-absorbing member 50 is arranged in a position that overlaps with the tire 30 when viewed from above, and by arranging the sound-absorbing member 50 in a part of the vehicle interior that has a large impact on the occupants, the sound-absorbing effect on the occupants can be further improved.

[0055] Furthermore, in the vehicle front structure 10 of this embodiment, the front side members 12 are provided on extensions of the side members within the wheel houses 14 and are frameworks that extend along the vehicle longitudinal direction, so the sound-absorbing members 50 can be disposed over a wider area facing the tires 30. This can further improve the sound-absorbing effect.

[0056] Furthermore, the vehicle front structure 10 of this embodiment is provided with the partition wall 124 and the extended partition wall 144 as ribs that define two chambers in the vertical direction of the vehicle, and therefore the sound-absorbing member 50 can be positioned by the partition wall 124 and the extended partition wall 144. Furthermore, because the sound-absorbing member 50 is disposed in the upper chamber in the vertical direction of the vehicle, the sound-absorbing member 50 can be placed closer to the occupants in the vehicle interior, thereby further improving the sound-absorbing effect on the occupants.

[0057] Furthermore, in the vehicle front structure 10 of this embodiment, the liner member 40 is provided with the first rib 42 and the second rib 44 on one surface 41 on the side where the sound-absorbing member 50 is attached, so when attaching the sound-absorbing member 50, the attachment position of the sound-absorbing member 50 can be set by the first rib 42 and the second rib 44, thereby improving the workability of attaching the sound-absorbing member 50. In other words, the first rib 42 and the second rib 44 function as positioning ribs.

[0058] (Variation) In the above embodiment, as shown in Fig. 2, the sound absorbing member 50 is attached to the entire inner surface 14A of the wheel house 14 in the front-to-rear direction of the vehicle, but the present invention is not limited to this. Fig. 5 is a bottom view schematically showing an example of the vehicle front structure 10 of Fig. 1.

[0059] For example, as shown in the shaded area A in Fig. 5, the sound-absorbing member 50 only needs to be disposed on the side closer to the passenger compartment in the vehicle longitudinal direction. That is, the sound-absorbing member 50 only needs to be disposed on the front side, not the entire closed cross section (inside the upper chamber 130) of the front side member 12. In other words, the sound-absorbing member 50 does not need to be disposed on the rear side of the closed cross section (inside the upper chamber 130) of the front side member 12.

[0060] In this way, if the sound absorbing member 50 is disposed at least on the side closer to the passenger compartment, the cost required for the sound absorbing member 50 can be reduced while improving the sound absorbing effect on the occupants.

[0061] 6 and 7 are side views schematically showing Modification 1 and Modification 2 of the attachment position of the sound-absorbing member 50, respectively. In the above-described embodiment, the front side member 12 includes two chambers, an upper chamber 130 and a lower chamber 132, in the vehicle vertical direction. However, the present invention is not limited to this. As shown in FIGS. 6 and 7, if the front side member 12 includes three adjacent chambers in the vehicle vertical direction, the sound-absorbing member 50 may be attached to the uppermost chamber and the middle chamber, as in Modification 1 shown in FIG. 6. Alternatively, as in Modification 2 shown in FIG. 7, the sound-absorbing member 50 may be attached only to the uppermost chamber. If the front side member 12 includes three or more adjacent chambers in the vehicle vertical direction, the sound-absorbing member 50 only needs to be attached to the upper chambers, including at least the uppermost chamber.

[0062] In Modifications 1 and 2, the front side member 12 has ribs that define at least three or more chambers in the vehicle vertical direction, and the sound-absorbing members 50 are disposed in the chambers defined by the ribs. Therefore, the sound-absorbing members 50 can be positioned by the ribs. Furthermore, since the sound-absorbing members 50 are disposed in at least the upper chambers including the uppermost chamber in the vehicle vertical direction among the three or more chambers, the sound-absorbing members 50 can be positioned closer to the occupants in the vehicle interior, thereby further improving the sound-absorbing effect on the occupants.

[0063] In addition, in the vehicle front structure 10 of the above embodiment, the sound-absorbing member 50 is attached to the liner member 40, but the present invention is not limited to this. Figures 8 and 9 are front cross-sectional views of the main part that schematically show modified example 3 and modified example 4 of the attachment position of the sound-absorbing member 50, respectively.

[0064] In Modification 3, as shown in Fig. 8, the sound-absorbing member 50 is attached to the front side member 12. Specifically, the sound-absorbing member 50 is attached to the surface of the inner wall portion 123 of the front side member 12 facing the upper chamber 130. By attaching the sound-absorbing member 50 to the front side member 12 in this manner, the liner member 40 can be attached to the front side member 12 after the sound-absorbing member 50 is attached to the front side member 12. This improves the workability of attaching the sound-absorbing member 50.

[0065] In the fourth modification, as shown in Fig. 9, the sound-absorbing member 50 is attached to the liner member 40 and the front side member 12. Specifically, the inner side of the sound-absorbing member 50 in the vehicle width direction is attached to the surface of the inner wall portion 123 of the front side member 12 facing the upper chamber 130. On the other hand, the outer side of the sound-absorbing member 50 in the vehicle width direction is attached to one surface 41 of the liner member 40. By attaching the sound-absorbing member 50 to both the liner member 40 and the front side member 12 in this way, the sound-absorbing member 50 can be attached more firmly within a closed or semi-closed cross section.

[0066] [remarks] In the above-described embodiment, the vehicle front structure 10 has been described as an example of the vehicle structure, but the vehicle structure of the present invention is not limited to the vehicle front structure 10 and may be a vehicle rear structure. A structure similar to the vehicle front structure 10 can also be adopted for the vehicle rear structure.

[0067] Furthermore, in the above-described embodiment, the vehicle front structure 10 is integrally molded by die casting, but the present invention is not limited to this, and it is sufficient that at least the skeletal members such as the front side members 12 are integrally molded.

[0068] In the above-described embodiment, the front side members 12 and the apron upper member 18 have an open cross-sectional shape with an opening on the outer side in the vehicle width direction, but the present invention is not limited to this. At least one of the front side members 12 and the apron upper member 18 may have an open cross-sectional shape with openings on both the outer and inner sides in the vehicle width direction.

[0069] In the above-described embodiment, the second liner member 40B has five first ribs 42 and four second ribs 44, but the present invention is not limited to this. The number and attachment positions of the first ribs 42 and second ribs 44 can be changed as appropriate depending on the size of the second sound-absorbing member 54 attached to the second liner member 40B, etc.

[0070] Furthermore, in the above-described embodiment, the second liner member 40B includes five first ribs 42 and four second ribs 44, but the present invention is not limited to this, and the second liner member 40B may not include the first ribs 42 and the second ribs 44. In particular, when the sound-absorbing member 50 is attached to the front side member 12, as in Modification 3 shown in Fig. 8, the first ribs 42 and the second ribs 44 are not necessary.

[0071] Furthermore, the configuration of the present invention is not limited to the above-described embodiment, and the configuration can be changed as appropriate as long as the problem can be solved. [Explanation of symbols]

[0072] 10. Vehicle front structure (vehicle structure), 12 Front side member (framework member) 12A aperture 14 Wheelhouse 14 124 Compartment wall (rib) 30 tires 40 Liner material 42 First Rib (Rib) 44 Second Rib (Rib) 50 Sound-absorbing material

Claims

1. a skeletal member integrally molded by die casting and having an open cross-sectional shape with an opening in at least one direction; a liner member disposed between the frame member and the tire and attached to the frame member so as to form a closed cross section or a quasi-closed cross section together with at least a portion of the open cross section of the frame member; a sound absorbing member disposed within the closed cross section or the quasi-closed cross section; A vehicle structure comprising:

2. The vehicle structure according to claim 1 , wherein the sound absorbing member is attached to the liner member.

3. The vehicle structure according to claim 1 , wherein the sound absorbing member is attached to the frame member.

4. The vehicle structure according to claim 1 , wherein the sound absorbing member is attached to both the liner member and the frame member.

5. The vehicle structure according to claim 1 , wherein the sound absorbing member is disposed at a position overlapping the tire in a top view.

6. 2. The vehicle structure according to claim 1, wherein the frame member is a frame portion extending in a front-rear direction of the vehicle within a wheel house.

7. The framework member has at least two or more chambers partitioned by ribs in the vehicle vertical direction, 7. The vehicle structure according to claim 6, wherein the sound absorbing member is disposed in at least one upper room of the two or more rooms, the uppermost room being located in the vertical direction of the vehicle.

8. The frame member has two chambers partitioned by ribs in the vehicle vertical direction, 8. The vehicle structure according to claim 7, wherein the sound absorbing member is disposed in a room located on the upper side in the vehicle vertical direction.

9. 3. The vehicle structure according to claim 2, wherein the liner member has a rib on a surface on the side to which the sound absorbing member is attached.

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