JP2018202991A - Sound absorption structure of vehicle - Google Patents

Abstract

To increase a sound absorption efficiency of a sound absorption member which absorbs noise outside a vehicle, invading from an extractor opening and transmitting in a cabin.SOLUTION: There are provided: a ventilation opening 88 for discharging air in cabins 2,3 to the outside of the cabins, in an interior wall 8 of the cabin 3; and an extractor opening 14 for discharging discharged air to the outside of the cabins 2,3 to the outside of a vehicle, in an exterior wall 6 of a vehicle body. A ventilation space 30 for communicating the ventilation opening 88 and the extractor opening 14 is provided between the cabin interior wall 8 and the vehicle body exterior wall 6, and a sound absorption member 20 extending between the ventilation opening 88 and the extractor opening 14 is arranged in the ventilation space 30. There are formed closed cross section ventilation passages 24A,25A whose cross sections in a direction orthogonal to a direction in which the sound absorption member 20 extends becomes closed cross sections surrounded by the sound absorption member 20 in the whole circumferences.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a sound absorbing structure for a vehicle, and enters from an extractor opening provided on the outer wall of the vehicle, and enters a vehicle interior from a ventilation opening provided on the vehicle interior wall through a ventilation space between the vehicle outer wall and the vehicle interior wall. The present invention relates to a sound-absorbing structure for propagating noise outside the vehicle.

  In general, a vent opening is provided in the vehicle interior wall, an extractor opening is provided in the vehicle body outer wall, and the air vent opening and the extractor opening communicate with each other between the vehicle interior wall and the vehicle outer wall. Ventilation space is provided.

  When the door is closed, the air pressure in the passenger compartment is adjusted by discharging the air in the passenger compartment to the vent space through the vent opening and further discharging the air from the vent space to the outside through the extractor opening.

  By the way, in recent years, there has been an increasing need for improving the quietness of the passenger compartment, and noise entering the ventilation space from the extractor opening directly propagates to the passenger compartment through the ventilation space. There is a need for sound absorption measures.

  As a conventional sound absorbing measure, for example, a sound absorbing member has been applied over a wide range to each surface of the vehicle interior wall and the vehicle body outer wall.

  However, as the need for improving the quietness of the passenger compartment increases, as described above in order to enhance the sound absorption effect, it is not efficient because a large amount of the sound absorbing member is required when pasted over a wide range. It is also difficult to reduce the weight.

  On the other hand, the sound absorbing structure of Patent Document 1 divides a space portion as a ventilation space into an upper space and a lower space by the first and second partition members (25, 26), and among these, the side of the lower space In addition, a ventilation opening (24) and an extractor opening (17, 19) are provided, and a sound absorbing material (23) is provided, and in the lower space, pressure adjustment in the vehicle interior and noise absorption from outside the vehicle are performed. It is configured to effectively prevent noise outside the vehicle from propagating through the upper space formed above the arched rear wheel house and entering the vehicle interior. is there.

  Here, it is generally said that the sound absorbing effect becomes higher as the sound absorbing member is arranged on the inner wall of the ventilation space so that the cross section perpendicular to the ventilation direction becomes smaller under the same mass (same usage amount) and the same material. . However, in patent document 1, it arrange | positions only in a part of ventilation space (for example, the opposing part of 1st opening (17)) (refer FIG. 3 of patent document 1), and it is sound-absorbing so that the cross section of a ventilation path may become small. There is no idea of increasing the sound absorption effect by arranging the members, and there is room for improvement in terms of increasing the sound absorption effect (ie, sound absorption efficiency) of the sound absorption member under the same mass and the same material.

  In addition, the sound absorbing structure of Patent Document 2 includes a sound absorbing material (50) between the vehicle exterior (14) and the vehicle interior (30) so as to surround at least the ventilation opening (32) along the periphery thereof. (See FIG. 6 of Patent Document 2). That is, the sound absorbing material (50) is arranged on each of the upper edge, the right edge, and the left edge of the ventilation opening (32) so as to fill a gap between the vehicle exterior (14) and the vehicle interior (30). (See FIGS. 3 and 6).

  Further, in the sound absorbing material of Patent Document 2, the right edge and the left edge of the ventilation opening extend to the right and left edges of the ventilator through-hole (18) as the extractor opening. It seems that the ventilation path between the ventilator through-hole (18) and the ventilation opening (32) can be kept small according to the interval between the sound absorbing materials arranged on the left and right sides thereof.

  However, in general, the interval between the vehicle exterior and the vehicle interior is not constant along the extending direction of the ventilation path (the vertical direction of the vehicle), and there is a portion where the interval in the vehicle width direction increases depending on the location. The sound absorbing material 2 cannot necessarily keep the cross-sectional area of the ventilation path small, and there is still room for improvement in that the sound absorbing effect of the sound absorbing material is enhanced under the same mass and the same material.

JP 2012-144155 A Japanese Patent Laying-Open No. 2015-16809

  Therefore, an object of the present invention is to provide a sound absorbing structure for a vehicle that can increase the sound absorption efficiency of a sound absorbing member that absorbs noise outside the vehicle that enters from the opening of the extractor and propagates into the vehicle interior.

  The present invention is provided with an opening for venting the air inside the passenger compartment to the outside of the passenger compartment on the inner wall of the passenger compartment, and an extractor opening for exhausting the air exhausted outside the passenger compartment to the outside of the passenger compartment on the outer wall of the vehicle body. A ventilation space that communicates the ventilation opening and the extractor opening is provided between the vehicle interior wall and the vehicle body outer wall, and the ventilation space includes the ventilation opening and the extractor opening. A sound absorbing member extending in between is provided, and a closed cross-section ventilation path is formed in which a cross section in a direction orthogonal to the extending direction of the sound absorbing member is a closed cross section surrounded by the sound absorbing member.

  According to the said structure, the cross-sectional area of a ventilation path can be reduced and the sound absorption effect by a sound absorption member can be maximized. That is, the sound absorption efficiency of the sound absorbing member can be increased.

  As an aspect of the present invention, the closed cross-section ventilation path is at least a position corresponding to the opening side end of the extractor opening in the vehicle vertical direction and a position corresponding to the extractor opening side end of the ventilation opening in the vehicle front-rear direction. It is extended between.

  According to the above configuration, it is possible to obtain a sound absorbing effect while reducing the amount of the sound absorbing member used.

  As an aspect of the present invention, the sound absorbing member includes a first sound absorbing member provided on a surface of the vehicle interior wall on the ventilation space side, a vehicle outside of the first sound absorbing member, and the first sound absorbing member. The second sound absorbing member is formed with an open cross section that opens toward the member, and the closed cross section ventilation path is formed by the first sound absorbing member and the second sound absorbing member.

  According to the above configuration, the sound absorbing member includes the first sound absorbing member provided on the surface of the vehicle interior wall on the side of the ventilation space and the second sound absorbing member formed with an open cross section that opens toward the first sound absorbing member. Therefore, it is difficult for a gap to be formed in the joint portion of the first and second sound absorbing members, and a closed cross-section ventilation path can be reliably formed inside the sound absorbing member.

  Furthermore, since the sound absorbing member is composed of the first sound absorbing member and the second sound absorbing member, each sound absorbing member can be easily formed by molding or the like, and the first and second sound absorbing members are combined with each other. Thus, a closed cross-section ventilation path can be easily formed inside.

  As an aspect of the present invention, the extractor opening is formed from the rear wheel house and the rear end portion of the vehicle body to the vehicle width outer side, and the rear wheel house and the rear of the vehicle body are formed at the rear lower portion of the second sound absorbing member. A bulging portion that bulges outside the vehicle width is provided between the end portions, and the second sound absorbing member has a bulging portion outer surface opening that communicates with the extractor opening on the vehicle width outer surface of the bulging portion. Is.

  According to the above configuration, the bulging portion allows the bulging portion outer surface opening to communicate with the extractor opening in the vicinity of the extractor opening along the shape of the vehicle body. The air that has entered the vehicle can be reliably taken into the closed cross-section ventilation path inside the sound absorbing member, and the noise outside the vehicle can be effectively absorbed in the closed cross-section ventilation path.

  As an aspect of the present invention, the second sound absorbing member has a sound absorbing flat surface portion that connects the front surface and the rear surface of the bulging portion.

  According to the above configuration, by providing the sound absorbing plane portion in the bulging portion, it is possible to dispose the noise absorbing plane portion at a position closer to the noise generation source having a high sound absorbing effect, even in the direction in which the sound absorbing member extends. By providing a sound absorbing plane portion so as to connect the front surface and the rear surface of the bulging portion, air (noise) outside the vehicle is introduced into the closed cross-section ventilation path in the bulging portion whose sectional area is smaller by the sound absorbing flat portion. Since it can be passed, it can absorb sound effectively.

  As an aspect of the present invention, the closed cross-section ventilation path extends above the bulging portion along the rear wheel house, and the sound absorbing plane portion extends in the horizontal direction.

  According to the above configuration, the closed cross-section ventilation path extends above the bulging portion along the rear wheel house and the sound absorbing flat surface section extends in the horizontal direction. Therefore, in the closed cross-section ventilation path (direction in which the sound absorbing member extends) Since the upper portion and the sound absorbing plane portion are arranged in a substantially orthogonal direction with respect to the bulging portion when viewed from the side of the vehicle, the air is propagated over the path extending from the bulging portion to the upper side. The sound absorption effect can be further enhanced.

  According to the present invention, it is possible to increase the sound absorption efficiency of the sound absorbing member that absorbs noise outside the vehicle that enters from the opening of the extractor and propagates into the vehicle interior.

FIG. 3 is a cross-sectional view in the vehicle width direction of the right side portion of the cargo compartment showing the right side wall portion of the rear portion of the vehicle body including the sound absorbing structure of the present embodiment and its peripheral portion as seen from the cargo compartment side. Sectional drawing which shows the state which abbreviate | omitted illustration of the trunk side panel in FIG. Sectional drawing which shows the state which abbreviate | omitted illustration of the 1st sound absorption member in FIG. Sectional drawing which shows the state which abbreviate | omitted illustration of the 2nd sound absorption member in FIG. FIG. 3 is a sectional view taken along line AA in FIG. 2. BB sectional drawing of FIG. The CC sectional perspective view of FIG. The DD sectional view taken on the line of FIG. The EE sectional view taken on the line of FIG. FIG. 3 is a sectional view taken along line FF in FIG. 2. The main part perspective sectional view which looked at the rear package trim and its periphery from the vehicle width center a little to the left and rear lower part. FIG. 3 is a cross-sectional view in the vehicle width direction at the center portion in the vehicle width direction, showing the right side wall portion of the rear portion of the vehicle body including the sound absorbing structure of the present embodiment and its peripheral portion as viewed from the luggage compartment side. Sectional drawing which showed the vehicle body rear part of other embodiment which applied the sound-absorbing structure of this invention to the side wall part which is not equipped with the jack accommodating part corresponding to FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the figure, arrow F indicates the front of the vehicle, arrow OUT indicates the vehicle width direction outer side (vehicle right side), arrow IN indicates the vehicle width direction inner side (vehicle left side), and arrow U indicates the vehicle upper side. Further, since the vehicle according to the present embodiment has a bilaterally symmetric shape, description will be made based on the configuration on the right side of the vehicle.

  As shown in FIG. 1, a vehicle to which the sound absorbing structure of the present embodiment is applied has a rear package trim 90 (see FIGS. 11 and 12) as a partition wall behind the passenger compartment 2 and separated from the passenger compartment 2. A sedan type automobile having a luggage compartment 3 (trunk room) provided at the rear part of the vehicle body, and a vehicle body side wall part 4 (shown only on the right side of the vehicle) provided on both sides of the cargo compartment 3 along the side part of the vehicle rear part. ).

  The vehicle body side wall 4 includes a rear wheel house 5 (hereinafter referred to as “wheel house 5”), a side outer panel 6, a pillar inner panel 7, and a trunk side trim 8.

  As shown in FIGS. 4 and 6 to 9, the wheel house 5 is formed in an arch shape in which a middle part in the front-rear direction is convex upward in a vehicle side view, and a wheel house outer panel 51 on the outer side in the vehicle width direction. It forms with the wheel house inner panel 52 inside a vehicle width direction, and mutual upper edge 51a, 52a is joined and fixed (refer joining part S1 in FIGS. 6-9).

The wheel house outer panel 51 forms a vehicle width outward bulging portion 53 that bulges outward in the vehicle width, and the wheel house inner panel 52 includes a vehicle width inward bulging portion 54 that bulges inward in the vehicle width. And a tire accommodating portion 55 for the rear wheel of the vehicle is formed in the space between them. The wheel house 5 is disposed so that the rear end thereof is separated from the rear end panel 41 positioned at the rear end of the vehicle body (see FIG. 4).
The rear end panel 41 is only shown in FIG. 4 and is not shown in other drawings for convenience.

  As shown in FIGS. 3, 4, and 8, a suspension support portion 12 that supports a suspension for a rear wheel forms a part of the wheel house inner panel 52 at the vehicle longitudinal direction central portion of the wheel house inner panel 52. It is provided as follows. Further, the wheel house 5 is positioned below the rear pillar 15 (C pillar) (see FIGS. 1 and 8), and the lower portion of the rear pillar 15 is reinforced at the front side portion of the suspension support portion 12 of the wheel house inner panel 52. A gusset 13 is provided (see FIG. 3).

  The side outer panel 6 forms a side wall serving as a vehicle exterior, and an upper portion thereof is located between a rear side door (not shown) and a back door. The upper part of the side outer panel 6 covers the pillar inner panel 7 and the lower part of the side outer panel 6 covers the wheel house 5 from the outside in the vehicle width direction (see FIGS. 8 and 9).

  A portion of the side outer panel 6 corresponding to the wheel house 5 and at least a lower edge of the wheel house outer panel 51 are joined and fixed to each other (see a joined portion S3 in FIGS. 8 and 9).

  As shown in FIGS. 4, 6, and 10, the rear part of the vehicle body of the side outer panel 6, specifically, a portion located between the wheel house 5 and the rear end panel 41 (see FIG. 4) in the vehicle front-rear direction, An extractor opening 14 through which air discharged outside the vehicle compartment (air in a ventilation space described later) is discharged outside the vehicle is formed to penetrate.

  The extractor opening 14 is formed in the vehicle width outward direction. In addition, the extractor opening 14 is a vehicle that secures ventilation with the outside of the vehicle at the end of a rear bumper (not shown) that extends forward along the curved shape of the corners in plan view on both sides of the rear side of the vehicle body. Covered from the outside in the width direction.

  As shown in FIG. 8, the pillar inner panel 7 is disposed on the inner side in the vehicle width direction with respect to the upper portion of the side outer panel 6, and the closed cross section 15 </ b> A extends in the vertical direction between the upper portions of the side outer panel 6. The rear pillar 15 having The pillar inner panel 7 has a lower end 7a bonded and fixed to an upper end 51a of the wheel house outer panel 51 (see FIGS. 8 and 9). The joint portion S2 is located above the joint portion S1 between the upper end 51a of the wheel house outer panel 51 and the upper end 52a of the wheel house inner panel 52. The pillar inner panel 7 extends upward from a joining portion S2 with the upper end 51a of the wheel house outer panel 51, and the upper edge thereof is joined and fixed to the upper edge of the side outer panel 6 (the joining in FIGS. 8 and 9). (See part S4).

  The pillar inner panel 7, the wheel house outer panel 51, and the wheel house inner panel 52 described above form the side inner panel 16 of the vehicle body side wall 4 (see FIGS. 8 and 9).

The trunk side trim 8 constitutes a side wall surface (design surface) of the cargo compartment 3 as an interior in the cargo compartment 3, and the wheel house 5 and the side outer panel 6 so as to cover the wheel house 5 from the cargo compartment 3 side. It is spaced apart and arranged inward in the vehicle width direction with respect to the lower portion (see FIGS. 5 to 7).
In this example, the trunk side trim 8 is made of resin. In addition, a trunk room mat (not shown) is laid on the rear floor panel 40 that forms the floor surface of the cargo compartment 3.

  As shown in FIGS. 1, 6, 7, and 10, the trunk side trim 8 is a rear portion of a portion corresponding to the wheel house 5 in a side view of the vehicle, and an intermediate portion in the vertical direction is located in the peripheral portion thereof. On the other hand, a recessed portion 80 that is recessed outward in the vehicle width direction when viewed from the vehicle compartment side is formed. As shown in FIG. 10, a jack is accommodated in a space below the recessed portion 80 of the trunk side trim 8. A jack accommodating portion 87 is provided. In the jack accommodating portion 87, the jack can be accommodated in a state of being installed on the rear floor panel 40 that forms the floor surface of the rear portion of the vehicle body such as the luggage compartment 3 via a base (not shown).

  Specifically, as shown in FIGS. 1 and 10, a lower portion of the trunk side trim 8 that extends in the vertical direction below the concave portion 80 of the trunk side trim 8 is formed by forming a concave portion 80 in the lower rear portion of the trunk side trim 8. From the vertical wall portion 81, the step surface portion 82 that extends substantially horizontally outward in the vehicle width direction so as to form the lower surface of the concave portion 80 from the upper end of the concave portion lower vertical wall portion 81, and the vehicle width direction outer end of the step surface portion 82 A vehicle width direction outer side vertical wall portion 83 that extends upward and a concave portion front wall portion 84 (see FIGS. 1 and 6) that forms the front wall of the concave portion 80 are formed. The jack accommodating portion 87 is located outside the concave portion lower vertical wall portion 81 in the vehicle width direction and below the step surface portion 82, with the step surface portion 82 as an upper surface, and the concave portion lower vertical wall portion 81 in the vehicle width direction. It is a space as an inner surface (see FIG. 10).

  Further, as shown in FIGS. 1, 6, and 10, the rear lower portion of the trunk side trim 8, that is, the stepped surface portion 82, the upper and lower sides and the front peripheral edge portion (above the lower portion of the concave lower vertical wall portion 81). Jacks housed in the jack housing part 87 can be taken in and out from the cargo compartment 3 side at the part, the lower part of the vehicle width direction outer vertical wall part 83 and the lower part of the concave front wall part 84). Is formed as an opening. A portion of the trunk side trim 8 corresponding to the jack entry / exit opening 85 is provided with a lid portion 86 that can open and close the jack entry / exit opening 85. The lid portion 86 forms a portion corresponding to the jack entrance opening 85 of the trunk side trim 8.

  The space in the vehicle body side wall portion 4 described above, that is, the space between the trunk side trim 8 and the side outer panel 6 is the portion corresponding to the wheel house 5 in the vehicle front-rear direction, particularly in FIGS. As shown in FIG. 7, while being partitioned in the vehicle width direction by the side inner panel 16, the side inner panel 16 (wheel house 5) and the rear end panel 41 (see FIG. 4) as the vehicle rear end portion in the vehicle front-rear direction. As shown in FIGS. 4 to 7 and 10, the intermediate portion communicates in the vehicle width direction without being partitioned by the side inner panel 16 in the vehicle width direction.

  Here, among the spaces partitioned by the side inner panel 16 in the vehicle body side wall portion 4 in the vehicle width direction, a space on the vehicle width direction inner side is set as a side wall inner vehicle width inner space 31, and the side inner panel 16 and the rear end panel are set. A space communicating in the vehicle width direction is set as an in-side-wall vehicle width communication space 32 at a portion between the vehicle 41 and the vehicle front-rear direction (refer to FIGS. 4, 5, and 7 in particular).

  On the other hand, inside the vehicle body side wall portion 4 is provided on the side of the side outer panel 6 and a cargo compartment side ventilation opening 88 (to be described later) provided on the trunk side trim 8 side, which will be described later (refer to FIGS. 8, 11 and 12 in particular). A vent space 30 that communicates with the extractor opening 14 is provided, and the vent space 30 is mainly constituted by the inner side wall width inner space 31 and the inner side wall width communication space 32.

As shown in FIGS. 11 and 12, a rear package trim 90 that partitions the cargo compartment 3 and the passenger compartment 2 is disposed in the upper part of the cargo compartment 3.
The rear package trim 90 is not shown in the drawings other than FIGS. 11 and 12.

  The rear package trim 90 is attached to and supported by the pillar inner panel 7 via support brackets 92 on both sides of the cargo compartment 3.

  In particular, as shown in FIGS. 4 and 8, the support bracket 92 has a base end joined to a position above the upper end 8 u (see FIGS. 8, 11, and 12) of the trunk side trim 8 of the pillar inner panel 7. In both sides of the cargo compartment 3, the rear package trim 90 extends substantially horizontally in the vehicle width direction and in the vehicle front-rear direction so that the rear package trim 90 can be supported from below. The front portion of the support bracket 92 is attached to the upper surface of the gusset 13 by being lowered by one step with respect to the attachment surface of the rear package trim 90 (see FIG. 4).

  As shown in FIGS. 1 and 8, the air in the cargo compartment 3 is moved outside the cargo compartment 3 (the trunk side trim between the upper end 8 u of the trunk side trim 8 and the support bracket 92 extending in the front-rear direction above the trunk side trim 8. There is provided a cargo room side ventilation opening 88 that opens in the vehicle width direction so as to be able to be discharged to the ventilation space 30) located on the outer side in the vehicle width direction than the vehicle 8.

  11 and 12, the rear package trim 90 is a panel member that forms a partition wall between the cargo compartment 3 and the passenger compartment 2 behind the rear seat (not shown) in the vehicle body 1, and has a vehicle width. In the center of the direction, there is provided a slit-like passenger chamber side ventilation opening 91 that opens in the vertical direction so that air in the passenger compartment 2 can be discharged into the cargo compartment 3.

  The thick arrows in FIGS. 11 and 12 schematically show the flow of air discharged from the passenger compartment 2 to the outside of the vehicle when the side door is closed. Further, the passenger compartment side ventilation opening 91 of the present example is configured by arranging a plurality of slit portions 91a extending in the vehicle width direction, but is not limited to this configuration, and is formed in a mesh shape or the like. 3 and the passenger compartment 2 are not particularly limited as long as the openings are formed so as to allow ventilation.

That is, in the sedan type vehicle as in this embodiment, as shown in FIGS. 11 and 12, the passenger compartment 2 and the cargo compartment 3 communicate with each other through the passenger compartment side ventilation opening 91 of the rear package trim 90. In addition, since the luggage compartment 3 and the ventilation space 30 communicate with each other through the luggage compartment side ventilation opening 88 provided above the trunk side trim 8 (see FIG. 8), the vehicle interior (ride) It is possible to vent from the space) to the ventilation space 30 via the cargo compartment 3.
In the hatchback type vehicle, since the partition wall (rear package trim 90) is not provided between the cargo compartment 3 and the passenger compartment 2, the passenger compartment 2 and the cargo compartment 3 are opened to the passenger compartment side ventilation openings. It communicates directly without going through 91.

  As shown in FIGS. 3 to 10, the sound absorbing member 20 extending between the cargo room side ventilation opening 88 and the extractor opening 14 is disposed in the ventilation space 30.

  As shown in FIGS. 2 and 5 to 10, the sound absorbing member 20 is a panel-shaped first sound absorbing member that is adhesively bonded to the surface 8 a (see FIGS. 5 to 10) opposite to the design surface of the trunk side trim 8. As shown in FIGS. 3, 5, 7, and 9, the member 21 is provided on the outer side in the vehicle width direction with respect to the first sound absorbing member 21, and has an open cross section that opens toward the first sound absorbing member 21. The second sound absorbing member 22 is formed. The first sound absorbing member 20 and the second sound absorbing member 22 are both formed by molding. Furthermore, the first sound absorbing member 21 and the second sound absorbing member 22 include the sound absorbing member 20 in the sound absorbing member 20. Closed cross-section ventilation paths 24A and 25A are formed in which the orthogonal cross-section in the extending direction is a closed cross-section surrounded by the sound absorbing member 20 (see FIGS. 3, 5, 6, 9, and 10).

  As shown in FIGS. 2 and 5, the first sound absorbing member 21 is formed in a panel shape corresponding to the vehicle side view shape excluding the rear lower portion of the trunk side trim 8, and the front side first sound absorbing member 21f, It is composed of two members, a rear first sound absorbing member 21r provided on the rear side of the front first sound absorbing member 21f, and the front and rear opposing edges are in contact with each other or have a slight gap between the front and rear sides. Are installed side by side.

  The front side first sound absorbing member 21f is formed in a vehicle side view shape corresponding to substantially the entire wheel house 5 (see FIG. 2), and the vehicle width inwardly bulging portion 54 of the wheel house inner panel 52 and the trunk side trim. 8 is interposed so as to fill a gap between them (see FIGS. 6 to 8). The upper portion of the front first sound absorbing member 21f is opposed to the upper end portions 51a and 52a of the wheel house outer panel 51 and the wheel house inner panel 52 with the vehicle interior space 31 in the side wall therebetween (FIGS. 5 and 8). (See FIG. 9).

  The rear first sound absorbing member 21r is positioned rearward of the front first sound absorbing member 21f, and is substantially the whole except for a vehicle body mounting flange portion 29 (see FIG. 3) described later of the second sound absorbing member 22 and the vehicle width direction. It is formed in the vehicle side view shape (refer FIG. 2, FIG. 3) which opposes inside. That is, the rear first sound absorbing member 21r is opposed to the side outer panel 6 positioned on the outer side in the vehicle width direction with the second sound absorbing member 22 disposed in the vehicle width communication space 32 in the side wall (see FIG. 5). (See FIGS. 7 and 10).

  In the rear lower corner portion of the first sound absorbing member 21, a clearance portion 21a is formed by forming a portion corresponding to at least the lid portion 86 (see FIG. 10) as viewed from the side of the vehicle in a notch shape upward from the lower edge and forward from the rear edge. Is formed across the front first sound absorbing member 21f and the rear first sound absorbing member 21r (see FIG. 2).

  The lower end portion of the rear first sound absorbing member 21r is located at a position 14uP corresponding to the upper end 14u of the extractor opening 14 in the vertical direction by the escape portion 21a (see FIGS. 2 and 10).

  As shown in FIG. 3, the second sound absorbing member 22 extends between the openings 88 and 14 so as to connect the cargo compartment side ventilation opening 88 and the extractor opening 14 along the shape of the ventilation space 30. The second sound absorbing member 22 is formed in an open cross section that opens toward the inner side in the vehicle width direction over substantially the entire length in the extending direction.

  The second sound absorbing member 22 is integrally formed of a rear lower part 23 and a front upper extension part 25 that extends forward and upward with respect to the rear lower part 23 (see FIG. 3). The closed cross-section ventilation path 24A is formed inside the rear lower portion 23 (the rearwardly extending bulging portion 24), and the closed cross-section ventilation path 25A is formed inside the front upper extending portion 25. (See FIGS. 3 and 10).

  As shown in FIGS. 3, 6, and 10, the rear lower portion 23 is provided with a bulging portion 24 that bulges outward in the vehicle width between the wheel house 5 and the rear end panel 41 in the vehicle front-rear direction. .

  The upper part on the inner side in the vehicle width direction of the bulging part 24 of the rear lower part 23 is integrally coupled with the lower part of the front upper extension part 25, and the closed cross-sectional ventilation extending upward from the rear lower part 23 (bulging part 24). The path 25A and a closed cross-section ventilation path 24A extending in the vehicle width direction as described later communicate with each other (see FIGS. 3 and 10).

  The rear lower portion 23 provided with the bulging portion 24 is mainly disposed in the side wall inner vehicle width communication space 32 (see FIGS. 3, 6, and 10), the side inner panel 16, strictly speaking, the wheel house outer panel. 51 and the wheel house inner panel 52 bulge from the vehicle width direction inner side to the outer side so as to straddle the joint portion S1 in the vehicle width direction (see FIGS. 6 and 10).

  The bulging portion 24 has an upper surface 24a, a lower surface 24b, a front surface 24c, a rear surface 24d, and a vehicle width outer surface 24e (see FIGS. 3, 6, and 10), and the closed cross-section ventilation path 24A includes the upper surface 24a, The entire circumference is surrounded by the lower surface 24b, the front surface 24c, and the rear surface 24d, and the cross section orthogonal to the vehicle width direction is a closed cross section, and mainly extends in the vehicle width direction.

  A bulging portion outer surface opening 26 communicating with the extractor opening 14 is formed through the vehicle width outer surface 24 e of the bulging portion 24. The bulging portion outer surface opening 26 is substantially the same shape as the extractor opening 14 in a side view of the vehicle, and is formed to be the same size or slightly larger, and the bulging portion outer surface opening of the vehicle width outer surface 24 e of the bulging portion 24. The peripheral edge of 26 is in contact with the peripheral edge of the extractor opening 14 of the side outer panel 6 from the inner side in the vehicle width direction (see FIG. 10).

  Thus, both the opening direction of the extractor opening 14 and the bulging portion outer surface opening 26 and the bulging direction of the bulging portion 24 (the direction in which the closed cross-section ventilation path 24A in the bulging portion 24 extends) are both in the vehicle width direction. Match.

  Further, as shown in FIGS. 3, 6, and 10, the second sound absorbing member 22 connects the front surface 24c and the rear surface 24d of the bulging portion 24 (in other words, spans between the front surface 24c and the rear surface 24d). It has three sound-absorbing flat surface portions 27 (27a, 27b, 27c) (connection portions), and is formed integrally with the front surface 24c and the rear surface 24d. Both of these sound absorbing flat portions 27 are formed in a panel shape having a surface extending horizontally in the vehicle width direction and the front-rear direction, and noise (air) from the opening direction of the extractor opening 14, that is, from the outside of the vehicle. It is arranged in a direction orthogonal to the direction entering the inside 24.

  Further, these sound absorbing plane portions 27 (27a and 27 and 27b and 27c) have a gap in the vertical direction, and the upper sound absorbing plane portion 27a is a lower sound absorbing plane portion with respect to the upper surface 24a of the bulging portion 24. 27c is arranged with a gap with respect to the lower surface 24b of the bulging portion 24 (see FIG. 10).

  As shown in FIG. 3, the closed cross-section ventilation path 25 </ b> A inside the front upper extension 25 extends upward relative to the rear lower part 23 having the bulge 24 along the wheel house 5.

  The front upper extension portion 25 extends so that the lower end thereof rises upward from the rear lower portion 23, and is curved toward the top portion 5 a of the arch-shaped wheel house 5. The upper part extends forward along the line (see FIG. 3).

  Specifically, as shown in the figure, the front upper extension 25 is disposed above the rear lower portion 23 in the in-side-wall vehicle width communication space 32, and gradually toward the inner side in the vehicle width direction as the upper portion extends. It is offset and extends in the front upper direction along the vehicle width inwardly bulging portion 54 of the wheel house inner panel 52, and the front upper portion is located between the side inner panel 16 (wheel house 5) and the trunk side trim 8. The side wall inner vehicle width inner space 31 is arranged so as to enter from the side wall inner vehicle width communication space 32 side (see FIGS. 3, 5, 7, and 9).

  3 and 5, the front upper extension 25 extends to a position 88rP corresponding to the rear end 88r of the luggage compartment side ventilation opening 88 in the vehicle front-rear direction, that is, with respect to the top 5a of the wheel house 5. An opening 28 (a front upper end of the closed cross-section ventilation path 25A) at the front upper end (the end opposite to the rear lower portion 23 side) inside thereof opens forward.

  Note that the rear upper corner portion of the front upper extending portion 25 of the second sound absorbing member 22 is directly or directly attached to the vehicle body side, that is, the side inner panel 16 or the side outer panel 6 using an appropriate fixing means such as a clip or a fastener. A vehicle body mounting flange portion 29 for attaching the second sound absorbing member 22 via a bracket (not shown) is formed (see particularly FIG. 3).

  The front upper extension portion 25 is formed by an open cross section in which an orthogonal cross section in the extending direction (the communication direction of the extractor opening 14 and the cargo compartment side ventilation opening 88) opens toward the first sound absorbing member 21, that is, It is formed in a U shape (see FIGS. 3, 5, 7, 9, and 10).

  For example, in a portion in which the extending direction of the front upper extending portion 25 is mainly the front direction of the vehicle, the front surface is composed of an outer surface portion in the vehicle width direction, an upper surface portion and a lower surface portion extending inward in the vehicle width direction from both upper and lower ends. It is formed so that the orthogonal cross section of the upper extension portion 25 is U-shaped (see FIGS. 3 and 9). Similarly, in the portion where the extension direction is mainly upward, the outer surface portion in the vehicle width direction, The front and rear surfaces extending inward in the vehicle width direction from the front and rear ends are formed so that the upper cross-sections are U-shaped (see FIGS. 3 and 7). It opens toward the member 21.

  The sound absorbing member 20 is joined to the inside thereof so that the first sound absorbing member 21 and the second sound absorbing member 22 close the opening of the second sound absorbing member 22 toward the first sound absorbing member 21. Closed cross-section ventilation paths 24A and 25A are formed in which the entire circumference of the orthogonal cross section in the direction in which the sound absorbing member 20 extends is a closed cross section surrounded by the sound absorbing member 20.

  Among these, the closed cross-section ventilation path 25A is configured by joining the front upper extension portion 25 of the second sound absorption member 22 and the first sound absorption member 21 facing the front upper extension portion 25. It extends from a position 14uP corresponding to the upper end 14u of the tractor opening 14 to a position 88rP corresponding to the rear end 88r of the luggage compartment side ventilation opening 88 in the front-rear direction (see FIGS. 2, 3, 5, and 10).

  Furthermore, the closed cross-section ventilation paths 24A and 25A are both formed with a substantially constant cross-sectional area along their extending directions (see FIGS. 3, 9, and 10).

  The vehicle sound absorbing structure of the present embodiment has a luggage compartment as a vent opening for exhausting air from the passenger compartment 2 and the compartment 3 to the outside of the compartment on the trunk side trim 8 (inner wall) of the compartment 3 as a compartment. A side vent opening 88 is provided (see FIG. 1), and an extractor opening 14 is provided on the side outer panel 6 (outer wall) of the vehicle body for exhausting the air exhausted outside the vehicle compartment to the outside of the vehicle (see FIG. 4). A ventilation space 30 is provided between the trim 8 and the side outer panel 6 to communicate the cargo compartment side ventilation opening 88 and the extractor opening 14. The ventilation space 30 has a cargo compartment side ventilation opening 88 and an extract. A sound absorbing member 20 extending between the tractor opening 14 is provided, and a closed cross-section ventilation path 24A in which a cross section in a direction orthogonal to the direction in which the sound absorbing member 20 extends is a closed cross section surrounded by the sound absorbing member 20 , 5A in which are formed (see FIG. 3).

  According to the above configuration, the sound absorption effect of the sound absorbing member 20 is maximized by reducing the cross-sectional areas of the closed cross-sectional ventilation paths 24A and 25A, and enters the extractor opening 14 to be transmitted to the vehicle interior. The sound absorption efficiency can be increased.

  More specifically, the sound absorbing member 20 forms the closed cross section ventilation paths 24A and 25A in which the cross section in the direction orthogonal to the direction in which the sound absorbing member 20 extends is a closed cross section. In addition to being able to obtain a sound absorbing effect by being surrounded by the sound absorbing member 20, the entire direction in which the sound absorbing member 20 extends is independent of the shape and spacing of the side outer panel 6 (outer wall) and the trunk side trim 8 (inner wall). Since the cross-sectional area can be reduced over the range, the sound absorbing effect by the sound absorbing member 20 can be maximized.

  Specifically, the closed cross-section ventilation paths 24A and 25A included in the sound absorbing member 20 (especially the closed cross-section ventilation paths 25A in the portion corresponding to the front upper extension portion 25 of the second sound absorption member 22 in the extending direction of the sound absorbing member 20). Has a substantially constant cross-sectional area along the extending direction.

  Here, when the cross-sectional area of the closed cross section orthogonal to the extending direction of the sound absorbing member 20 is small, it becomes difficult for air to be discharged from the passenger compartment when the door is closed, and the interior of the passenger compartment (passenger compartment 2) is smooth. However, it is preferable that the cross-sectional area is large, while the smaller cross-sectional area of the closed cross section perpendicular to the extending direction of the sound absorbing member 20 is the same for the noise outside the vehicle. Since the sound absorption effect is enhanced under the sound absorbing member 20 having the same material as that of the mass, a smaller cross-sectional area is preferable.

  As described above, the ventilation path is configured by the closed cross-section ventilation paths 24A and 25A surrounded by the sound absorbing member 20, so that, for example, the tire wheel house 5 and the side outer panel 6 provided in the vehicle body side wall 4 can be ventilated. As in the conventional sound absorbing structure in which the sound absorbing material is simply pasted on the surfaces of various panels constituting the space 30, the ventilation space 30 is greatly different depending on the shape of the panel and the interval between the panels depending on the location of the ventilation space 30. The cross-sectional area of the air passage is not significantly different along the ventilation direction, and the cross-sectional area of the air passage is less affected by the panel shape, the spacing between the panels, etc., and more accurately and easily set according to the form of the sound absorbing member 20 It becomes possible to do.

  For this reason, in this embodiment, since the sound absorbing member 20 constituting the closed cross-section ventilation paths 24A and 25A is disposed in the ventilation space 30, smooth pressure adjustment in the passenger compartment 2 and sound absorption effect when the door is closed are achieved. The cross-sectional areas of the closed cross-section ventilation paths 24A and 25A can be set appropriately in consideration of the two viewpoints having the above-mentioned conflicting relationships of increasing.

  Further, by configuring the ventilation path with closed cross-section ventilation paths 24A and 25A that are surrounded by the sound absorbing member 20, the closed cross-section ventilation paths 24A and 24A are similar to the cross-sectional areas of the closed cross-section ventilation paths 24A and 25A. It is possible to set whether or not the bent portion of 25A is provided in an arbitrary bent shape according to the form of the sound absorbing member 20. For this reason, for example, it is also possible to reduce the bent portions of the closed cross-section ventilation paths 24A and 25A as much as possible and to easily adjust the atmospheric pressure in the passenger compartment 2 when the door is closed.

  As an aspect of the present invention, the closed cross-section ventilation paths 24A and 25A are at a position 14uP corresponding to at least the upper end 14u (the side end of the ventilation opening 88) of the extractor opening 14 in the vertical direction (see FIGS. 2 and 10), ventilation. It extends between a position 88rP (see FIGS. 3 to 5 and FIG. 8) corresponding to the rear end 88r (end of the extractor opening 14).

  According to the above configuration, since the sound absorbing member 20 can be provided so as to face the upper end 14u of the extractor opening 14 and the rear end 88r of the ventilation opening 88 in the vehicle width direction, the sound absorbing effect is ensured. Can do. Further, according to the above configuration, the amount of the sound absorbing member 20 used is reduced as compared with the case where the sound absorbing member 20 is provided, for example, so as to face the entire extractor opening 14 or the entire ventilation opening 88 in the vehicle width direction. be able to.

  Further, as an aspect of the present invention, the sound absorbing member 20 includes a first sound absorbing member 21 provided on a surface 8 a opposite to the design surface of the trunk side trim 8 (see FIG. 2), and a vehicle width outside of the first sound absorbing member 21. And a second sound absorbing member 22 formed with an open cross section that opens toward the first sound absorbing member 21 (see FIG. 3), and the first sound absorbing member 21 and the second sound absorbing member 22 Closed cross-section ventilation paths 24A and 25A are formed (see FIGS. 5, 7, 9, and 10).

  According to the above configuration, the panel-shaped first sound absorbing member 21 provided on the surface 8 a opposite to the design surface of the trunk side trim 8, and the second cross section that opens toward the first sound absorbing member 21. Since the sound absorbing member 20 is configured by joining the sound absorbing member 22 to each other, the gap between the joint portions is hardly generated, and the closed cross-section ventilation path 25A can be reliably configured.

  Furthermore, by configuring the sound absorbing member 20 with the first sound absorbing member 21 and the second sound absorbing member 22 as described above, the sound absorbing members 21 and 22 can be easily formed by molding or the like. By combining the member 21 and the second sound absorbing member 22 with each other, the closed cross-section ventilation paths 24A and 25A can be easily formed inside.

  Further, as an aspect of the present invention, the extractor opening 14 is formed from the wheel house 5 and the rear end panel 41 as the rear end of the vehicle body to the outside of the vehicle width (see FIG. 4). 23 is provided with a bulging portion 24 that bulges outward in the vehicle width between the wheel house 5 and the rear end panel 41 (see FIGS. 3, 6, and 10), and the second sound absorbing member 22 is bulged. A bulging portion outer surface opening 26 communicating with the extractor opening 14 is provided on the vehicle width outer surface 24e of the portion 24 (see the figure).

  According to the above configuration, the bulging portion 24 allows the bulging portion outer surface opening 26 to communicate with the extractor opening 14 in the immediate vicinity of the extractor opening 14 along the shape of the vehicle body. Air that has entered the ventilation space 30 from the outside of the vehicle can be reliably taken into 24A and 25A inside the sound absorbing member 20, and noise outside the vehicle can be effectively absorbed by 24A and 25A.

  As an aspect of the present invention, the second sound absorbing member 22 has a sound absorbing flat surface portion 27 (27a, 27b, 27c) that connects the front surface 24c and the rear surface 24d of the bulging portion 24 (FIGS. 3 and 6). FIG. 10).

  According to the above configuration, by providing the sound absorbing flat surface portion 27 in the bulging portion 24, the sound absorbing flat surface portion is located at a position closer to the noise source that is considered to have a high noise absorbing effect even in the direction in which the sound absorbing member 20 extends. 27, and the sound absorbing plane portion 27 is provided so as to connect the front surface 24c and the rear surface 24d of the bulging portion 24 so that the cross-sectional area is reduced by the sound absorbing plane portion 27. Since the air (noise) outside the vehicle can pass through the closed cross-section ventilation path 24A, it is possible to effectively absorb sound.

  Further, as described above, the bulging portion 24 bulges outside the vehicle width between the wheel house 5 and the rear end panel 41, so that the bulging direction of the bulging portion 24 and the opening of the extractor opening 14 can be obtained. The direction can be matched.

  And in this structure, as the said structure, the sound absorption plane part 27 connects the front surface 24c and the rear surface 24d of the bulging part 24, and the air outside the vehicle which invades from the vehicle outside through the extractor opening 14 The sound absorption effect can be effectively enhanced because the sound absorption effect can be provided so as to cross the sound absorption plane portion 27 with respect to the flow (noise propagation direction).

  More specifically, according to the above configuration, the wheel house 5 and the rear end panel 41 are arranged in a structure on the side of the rear part of the vehicle body in which the wheel house 5 is disposed at a position spaced forward from the rear end panel 41 located at the rear end of the vehicle body. The side outer panel 6 is provided with an extractor opening 14 between the wheel house 5 and the rear end panel 41. Further, a bulge that bulges outside the vehicle width by using the space between the wheel house 5 and the rear end panel 41 (side wall communication space 32). A portion 24 can be provided. Further, the bulging portion 24 that expands outward in the vehicle width direction may form a bulging portion outer surface opening 26 communicating with the extractor opening 14 on the outer surface of the vehicle with no gap between the bulging portion 24 and the extractor opening 14. The sound absorbing flat surface portion 27 connected to the front surface 24c and the rear surface 24d of the bulging portion 24 can be arranged so as to intersect the intrusion direction of air entering from the outside of the vehicle through the extractor opening 14. At the same time, it can be provided in the closed cross-sectional ventilation path 24A of the bulging portion 24 that is closer to the noise generation source outside the vehicle and that has a higher sound absorbing effect in the direction in which the sound absorbing member 20 extends.

  In addition, by extending the sound absorbing member 20 along the wheel house 5 formed in an arch shape, it becomes easy to provide the closed cross-section ventilation path 25 </ b> A having a substantially constant cross-sectional area along the wheel house 5.

  That is, in the present embodiment, the sound absorbing effect can be effectively enhanced by providing the sound absorbing member 20 having the closed cross-section ventilation paths 24A and 25A by utilizing the layout structure on the side of the rear part of the vehicle body.

  Further, as an aspect of the present invention, the closed cross-section ventilation path 25A extends along the wheel house 5 above the bulging portion 24, and the sound absorbing plane portion 27 extends in the horizontal direction (see FIGS. 2 and 10).

  According to the above configuration, since the closed cross-section ventilation paths 24A and 25A extend along the wheel house 5 above the bulging portion 24, the sound-absorbing flat surface section 27 extends in the horizontal direction. Since the flat surface portion 27 is disposed in a substantially orthogonal direction when viewed from the side of the vehicle, the sound absorption effect when air (noise) propagates along a path extending upward from the bulging portion 24 can be further enhanced. .

The present invention is not limited to the configuration of the above-described embodiment, and can be formed in various embodiments.
FIG. 13 is a cross-sectional view corresponding to FIG. 10, showing a vehicle body rear portion of another embodiment in which the sound absorbing structure of the present invention is applied to a side wall portion that does not include the jack housing portion 87.

  For example, like the rear part of the vehicle body of another embodiment shown in FIG. 13, the corner part between the lower edge seat surface 89 of the trunk side trim 8 and the outer vertical wall part 83 in the vehicle width direction, that is, the lower part of the concave part 80 is provided. , Without providing the stepped jack accommodating portion 87 as shown in FIG. 10, a portion corresponding to the jack accommodating portion 87 is configured as a part of the cargo compartment 3 (the corner portion on the lower right side of the cargo compartment 3). May be.

  Specifically, the lower vertical wall portion in the vehicle width direction is not provided in the lower portion of the trunk side trim 8 as shown in FIG. 13 without providing the lower vertical wall portion 81 and the stepped surface portion 82 as shown in FIG. 83 is formed so as to extend upward from the right edge of the lower edge seating surface 89, and a jack entrance opening 85 as shown in FIG. 86 is not provided.

  In this example, the first sound absorbing member 21 is not provided with the escape portion 21a as shown in FIG. 2 in the lower rear portion corresponding to the jack housing portion 87, and includes a rear lower portion of the trunk side trim 8. It is bonded over substantially the entire shape (see FIG. 13).

  As a result, as in the other embodiments described above, the first sound absorbing member 21 is disposed not only at the position 14uP corresponding to the upper end 14u of the extractor opening 14 in the vertical direction but also at the inner side in the vehicle width direction at the entire extractor opening 14. It arrange | positions so that it may oppose (refer the same figure).

  According to the above configuration, since the first sound absorbing member 21 is disposed so as to face the entire extractor opening 14 on the inner side in the vehicle width direction, air outside the vehicle (noise) that has entered through the extractor opening 14 is removed. The sound absorbing member 21 can absorb sound more effectively.

  Here, a jack accommodating portion 87 is provided at a corner portion between the lower edge seat surface 89 of the trunk side trim 8 and the vehicle width direction outer side vertical wall portion 83, and a relief portion 21 a is provided in the first sound absorbing member 21 correspondingly. The embodiment described above is the first embodiment, and the jack housing portion 87 is not provided at the corner portion between the lower edge seat surface 89 of the trunk side trim 8 and the vehicle width direction outer side vertical wall portion 83, and the first sound absorbing member 21 is provided. The above-described embodiment in which the escape portion 21a is not provided is referred to as a second embodiment.

  The configuration as in the first embodiment may be employed on one of the left and right sides of the vehicle, and the configuration as in the second embodiment may be employed on the other side of the left and right sides of the vehicle. Moreover, it is good also as a structure which employ | adopted either one of the structure like 1st Embodiment and the structure like 2nd Embodiment as the both right and left sides of a vehicle.

  Needless to say, in the first embodiment, the front upper end of the second sound absorbing member 22 is formed at the position 88rP corresponding to the rear end 88r of the ventilation opening 88 in the front-rear direction, but this is not a limitation, and illustration is omitted. However, it may extend forward from a position 88rP corresponding to the rear end 88r of the ventilation opening 88 so as to overlap the ventilation opening 88 in the vehicle longitudinal direction.

2 ... Passenger room (vehicle compartment)
3. Cargo compartment (vehicle compartment)
5 ... Rear wheel house 6 ... Side outer panel (vehicle body outer wall)
8 ... Trunk side trim (vehicle interior wall)
8a ... The surface on the opposite side of the design surface of the trunk side trim (the surface on the ventilation space side of the vehicle interior wall)
14 ... extractor opening 14u ... upper end of extractor opening (exhaust opening side end of extractor opening)
DESCRIPTION OF SYMBOLS 20 ... Sound-absorbing member 21 ... 1st sound-absorbing member 22 ... 2nd sound-absorbing member 23 ... Rear lower part 24 of 2nd sound-absorbing member ... Bulging part 24A, 25A ... Closed cross-section ventilation path 24c ... Front 24d of bulging part ... Bulging part Rear surface 24e ... vehicle width outer surface 26 of the bulging portion ... bulging portion outer surface opening (opening of the bulging portion outside the vehicle)
27 (27a, 27b, 27c) ... sound-absorbing plane part 30 ... ventilation space 41 ... rear end panel (vehicle body rear end part)
88 ... Cargo-side ventilation opening (ventilation opening)
88r: Rear end of cargo room side ventilation opening (extractor opening side end of ventilation opening)
91 ... Passenger compartment side ventilation opening (ventilation opening)

Claims (6)

On the inner wall of the passenger compartment is provided with a vent opening for exhausting the air in the passenger compartment to the outside,
An extractor opening is provided on the outer wall of the vehicle body to discharge the air discharged outside the passenger compartment to the outside of the vehicle.
A ventilation space is provided between the vehicle interior wall and the vehicle body outer wall to communicate the ventilation opening and the extractor opening.
A sound absorbing member extending between the ventilation opening and the extractor opening is disposed in the ventilation space,
A sound absorbing structure for a vehicle in which a closed cross-section ventilation path is formed in which a cross section in a direction perpendicular to a direction in which the sound absorbing member extends is a closed cross section surrounded by the sound absorbing member. The closed cross-section ventilation path extends between at least a position corresponding to the vent opening side end of the extractor opening in the vehicle vertical direction and a position corresponding to the extractor opening side end of the ventilation opening in the vehicle longitudinal direction. The sound absorbing structure for a vehicle according to claim 1. The sound absorbing member includes a first sound absorbing member provided on a surface of the vehicle interior wall on the ventilation space side;
A second sound absorbing member that is provided on the vehicle width outer side than the first sound absorbing member and is formed with an open cross section that opens toward the first sound absorbing member;
The sound absorbing structure for a vehicle according to claim 1 or 2, wherein the closed cross-section ventilation path is formed by the first sound absorbing member and the second sound absorbing member. The extractor opening is formed from the rear wheel house and the rear end of the vehicle body to the outside of the vehicle width,
A bulging portion that bulges outward in the vehicle width between the rear wheel house and the rear end portion of the vehicle body is provided at the rear lower portion of the second sound absorbing member,
4. The vehicle sound absorbing structure according to claim 3, wherein the second sound absorbing member has a bulging portion outer surface opening communicating with the extractor opening on a vehicle width outer surface of the bulging portion. The second sound absorbing member has a sound absorbing flat surface portion that connects the front surface and the rear surface of the bulging portion.
The sound absorbing structure for a vehicle according to claim 4. 6. The sound absorbing structure for a vehicle according to claim 5, wherein the closed cross-section ventilation path extends above the bulging portion along the rear wheel house, and the sound absorbing flat portion extends in a horizontal direction.

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