JP5434840B2 - Package tray and vehicle rear structure - Google Patents

Description

  The present invention relates to a package tray provided behind a rear seat of a vehicle and a vehicle rear structure having such a package tray.

  In the configuration disclosed in Patent Document 1 below, the sound absorbing material is dense on the side close to the surface of the package tray and the window surface of the rear glass, and is formed in the vehicle longitudinal direction middle portion of the package tray so that it is sparse on the far side. The sound absorbing material is provided in the recessed concave sound absorbing material embedded portion.

Japanese Laid-Open Patent Publication No. 2004-25945

  In such a configuration, since the sound absorbing material absorbs the sound wave in a state where the sound pressure of the sound wave is low, there is still room for improvement from the viewpoint of effectively absorbing the sound wave.

  In view of the above facts, an object of the present invention is to obtain a package tray capable of effectively absorbing sound waves and improving quiet performance and a vehicle rear structure having such a package tray.

A package tray according to the first aspect of the present invention includes a package tray main body provided between a rear glass and an upper back panel, a support portion provided at a rear end of the package tray main body, and the support portion . The upper back panel has an exposed surface and is supported by a surface facing a rear side of a vertical wall portion constituting the support portion and placed on a placement portion provided below the upper surface of the package tray main body. And a sound absorbing material that absorbs sound waves that pass between the rear glass and the package tray main body and between the rear end and the rear glass.

  In the package tray according to the first aspect of the present invention, a support portion is provided at the rear end of the package tray main body, and the sound absorbing material is supported by the support portion in a state where the rear end of the sound absorbing material is separated from the rear glass. The sound waves that pass through the gap between the sound absorbing material and the rear glass from between the package tray main body and the upper back panel and move toward the front of the vehicle between the rear glass and the package tray main body are generated by the upper back panel and the rear glass. When the light is reflected and enters the sound absorbing material, at least a part of the sound absorbing material is absorbed by the sound absorbing material. Thereby, the sound wave which tends to go to the front of the vehicle between the rear glass and the package tray body is reduced, and the quiet performance can be improved.

  By the way, if the lower end of the rear glass is located behind the upper end, such as a so-called “sedan”, and the rear glass is generally inclined in the front-rear direction with respect to the vertical direction, the rear glass is closer to the lower end of the rear glass. And the distance between the package tray becomes narrower. The sound pressure of the sound wave is higher at the position where the distance between the rear glass and the package tray is narrower than the position where the distance is wide.

Here, in the package tray according to the present invention, since the support portion for supporting the sound absorbing material is set at the rear end of the package tray main body, the sound absorbing material absorbs the sound wave at the position where the sound pressure of the sound wave is high as described above. To do. In addition, since the sound absorbing material has an exposed surface, sound waves can be effectively absorbed by the sound waves entering the sound absorbing material from the exposed surface.
Further, according to the package tray of the present invention, the support portion is configured by the vertical wall portion and the placement portion, and the sound absorbing material supported by the surface facing the rear in the vertical wall portion is placed on the placement portion. It is supported from below by the mounting part. For this reason, it is possible to effectively prevent the sound absorbing material from dropping from the support portion. In addition, among the outer peripheral surfaces of the sound absorbing material, since the surfaces other than the surfaces facing the rear in the vertical wall portion and the surfaces facing the upper portion in the mounting portion are exposed surfaces, sound waves can be effectively absorbed.

  A package tray according to a second aspect of the present invention is the package tray according to the first aspect, wherein at least a part of the surface of the sound absorbing material facing the rear glass is the exposed surface.

  In the package tray according to the second aspect of the present invention, at least a part of the surface of the sound absorbing material facing the rear glass is an exposed surface, and sound waves reflected by the rear glass enter the sound absorbing material from the exposed surface. It can absorb sound waves effectively.

  The package tray according to a third aspect of the present invention is the package tray according to the first or second aspect, wherein the lower end of the sound absorbing material is positioned below the upper end of the package tray main body. A sound absorbing material is supported by the support portion.

  According to the package tray of the present invention described in claim 3, the support portion provided at the rear end of the package tray main body is sound-absorbing in a state where the lower end of the sound-absorbing material is located below the upper end of the package tray main body. Support the material. For this reason, for example, since the portion exposed to the upper side of the package tray main body in the sound absorbing material can be reduced, while maintaining (or improving) the sound absorption effect by the sound absorbing material, the vehicle interior side (that is, from the package tray) Sound absorption material can be difficult to see from the front.

  The package tray according to a fourth aspect of the present invention is the package tray according to the third aspect, wherein the upper end of the sound absorbing material is at the same position as the upper end of the package tray main body or below the upper end of the package tray main body. The sound-absorbing material is supported by the support portion in a state of being positioned at the position.

  According to the package tray of the present invention as set forth in claim 4, the support portion provided at the rear end of the package tray main body is such that the upper end of the sound absorbing material is at the same position as the upper end of the package tray main body or the upper end of the package tray main body. The sound-absorbing material is supported in a state of being located on the lower side. For this reason, it is possible to make the sound absorbing material more difficult to see from the vehicle interior side (that is, the front side of the package tray).

A package tray according to a fifth aspect of the present invention is the package tray according to any one of the first to fourth aspects, wherein the package tray covers a surface of the package tray main body and at least a part of the sound absorbing material. It is equipped with a skin covering material.

According to the package tray of the present invention as set forth in claim 5 , the skin material covering the surface of the package tray main body is extended further rearward than the rear end of the package tray main body, thereby at least one of the surfaces of the sound absorbing material. Part is covered with skin material.

  Here, by placing the skin material on the sound absorbing material, this is the same as adding a mass (mass body) to the spring system composed of the sound absorbing material. Thereby, the frequency of the sound wave having a high absorption effect in the sound absorbing material becomes a value different from the frequency in the state where the skin material is not placed (that is, the specific frequency can be changed depending on the place where the skin material is placed). Become). Thereby, for example, even if the frequency of the sound wave to be absorbed most differs for each vehicle type, the sound wave of this frequency can be effectively absorbed.

The package tray according to a sixth aspect of the present invention is the package tray according to any one of the first to fifth aspects, wherein the sound absorbing material is exposed to the side opposite to the sound absorbing material in the support portion. A through hole is formed in the support portion.

According to the package tray of the present invention described in claim 6 , a through hole is formed in the support portion, and a part of the sound absorbing material is formed on the opposite side of the support portion from the sound absorbing material through the through hole. Exposed. Thereby, the sound wave which passes the opposite side to the sound-absorbing material of the support part can be absorbed by the sound-absorbing material, and the silent performance can be further improved.

A package tray according to a seventh aspect of the present invention is the package tray according to any one of the first to sixth aspects, wherein the package tray is applied to the rear glass along the lower end of the rear glass, and the lower end of the rear glass. The position of the support portion is set so that the sound absorbing material is positioned below a colored mask portion that shields an adhesive that bonds the vehicle and the vehicle body from the outside of the rear glass.

According to the package tray of the present invention described in claim 7 , the position of the support portion is set so that the sound absorbing material is positioned below the mask portion applied to the rear glass along the lower end of the rear glass. The mask portion is colored (for example, black) and is formed so as to shield the adhesive that bonds the lower end of the rear glass and the vehicle body from the outside of the rear glass. For this reason, by arranging the sound absorbing material on the lower side of the mask portion, it becomes difficult to see the sound absorbing material from the outside of the rear glass, and the appearance is improved.

The rear structure of the vehicle according to the present invention as set forth in claim 8 is provided at the rear of the vehicle, the rear glass is positioned rearward of the upper end and is inclined in the front-rear direction with respect to the vertical direction as a whole. An upper back panel provided on the lower side of the rear glass; a package tray having a package tray body provided between the rear glass and the upper back panel; and a support tray provided at a rear end of the package tray body; The support portion is mounted on a placement portion provided below the upper surface of the package tray main body and is supported by a surface facing the rear of the vertical wall portion constituting the support portion, and has an exposed surface. Passing between the rear end of the package tray and the rear glass from between the upper back panel and the package tray. And it includes a sound absorbing material for absorbing sound waves toward between cage tray, a.

In the vehicle rear structure according to the eighth aspect of the present invention, the support portion is provided at the rear end of the package tray main body constituting the package tray, and the support portion is sound-absorbed while the rear end of the sound absorbing material is separated from the rear glass. The material is supported. Sound waves that pass through the gap between the sound absorbing material and the rear glass from between the package tray and the upper back panel and move toward the front of the vehicle between the rear glass and the package tray are generated by the upper back panel and the rear glass. When reflected and incident on the sound absorbing material, at least a part of the sound absorbing material is absorbed by the sound absorbing material. Thereby, the sound wave which tends to go to the front of the vehicle between the rear glass and the package tray body is reduced, and the quiet performance can be improved.

  By the way, in the rear part of the vehicle such as a so-called “sedan”, the lower end of the rear glass is a lower end of the rear glass as long as the lower end of the rear glass is positioned rearward of the upper end and the rear glass is inclined in the front-rear direction with respect to the vertical direction. The closer to the part, the narrower the gap between the rear glass and the package tray. The sound pressure of the sound wave is higher at the position where the distance between the rear glass and the package tray is narrower than the position where the distance is wide.

Here, in the vehicle rear structure according to the present invention, since the support portion that supports the sound absorbing material is set at the rear end of the package tray main body, the sound absorbing material emits the sound wave at the position where the sound pressure of the sound wave is high as described above. Absorb. Moreover, since the sound absorbing material has an exposed surface, sound waves can be effectively absorbed even if the overall size of the sound absorbing material is small because sound waves are incident on the sound absorbing material from the exposed surface.
Further, according to the vehicle rear structure according to the present invention, the support portion of the package tray is configured by the vertical wall portion and the placement portion, and the sound absorbing material supported by the surface facing the rear in the vertical wall portion is the placement portion. It is placed on the top and supported from below by the placement unit. For this reason, it is possible to effectively prevent the sound absorbing material from dropping from the support portion. In addition, among the outer peripheral surfaces of the sound absorbing material, the surfaces other than the surfaces facing the rear in the vertical wall portion and the surfaces facing the upper portion in the mounting portion are exposed surfaces, so that sound waves can be effectively absorbed.

As described above, the package tray according to the first aspect of the present invention can efficiently absorb the sound wave that goes around from the rear end and travels forward, that is, toward the vehicle interior side, and can improve the quiet performance. In addition, the sound absorbing material can be supported from below, and the sound absorbing material can be effectively prevented from falling off from the support portion. Moreover, among the outer peripheral surfaces of the sound absorbing material, the surface facing the rear in the vertical wall portion and the mounting portion Since the surfaces other than the surfaces facing upward are exposed surfaces, sound waves can be effectively absorbed.

  The package tray according to the second aspect of the present invention can absorb the sound wave effectively because the sound wave having a high sound pressure reflected by the rear glass enters the sound absorbing material from the exposed surface.

  The package tray according to the third aspect of the present invention can make the sound absorbing material difficult to see from the vehicle interior side while maintaining or improving the sound wave absorbing effect of the sound absorbing material.

  In the package tray according to the fourth aspect of the present invention, the sound absorbing material can be made more difficult to see from the vehicle interior side.

The package tray according to the fifth aspect of the present invention can change the frequency of the sound wave having a high absorption effect as a whole, and can effectively absorb the sound wave having the frequency that is most desired to be absorbed.

The package tray according to the sixth aspect of the present invention can absorb sound waves passing through the side opposite to the sound absorbing material of the support portion with the sound absorbing material, and can further improve the quiet performance.

In the package tray according to the seventh aspect of the present invention, the sound absorbing material can be hardly seen from the outside of the rear glass, and the appearance can be improved.

According to the eighth aspect of the present invention, the vehicle rear structure according to the present invention can efficiently absorb the sound wave that goes around from the rear end of the package tray and travels forward, that is, toward the vehicle interior side, and can improve the quiet performance. In addition, the sound absorbing material can be supported from below, and the sound absorbing material can be effectively prevented from falling off from the support portion of the package tray. Moreover, the outer wall of the sound absorbing material faces rearward on the vertical wall portion of the package tray. Since the surface and the surface facing each of the surfaces facing upward in the mounting portion are exposed surfaces, sound waves can be effectively absorbed.

It is the expanded sectional view seen from the vehicle left direction which expanded the support part vicinity (vehicle rear part structure concerning a 1st embodiment) of a package tray concerning a 1st embodiment. It is the perspective view which looked at the rear glass vicinity (vehicle rear part structure which concerns on 1st form) of the vehicle to which the package tray which concerns on 1st Embodiment was applied from diagonally upward. It is the expansion perspective view which expanded the support part vicinity (vehicle rear part structure concerning a 2nd embodiment) of the package tray concerning a 2nd embodiment. It is sectional drawing corresponding to FIG. 1 which expanded the support part vicinity (vehicle rear part structure which concerns on 3rd Embodiment) of the package tray which concerns on 3rd Embodiment. It is sectional drawing corresponding to FIG. 1 which shows the modification of the package tray (vehicle rear part structure which concerns on 3rd Embodiment) which concerns on 3rd Embodiment. It is a graph which compares the sound absorption rate of a sound wave absorption with the structure which provided the skin material in the sound-absorbing material, and the structure which provided the skin material in the sound-absorbing material. It is sectional drawing corresponding to FIG. 1 which expanded the support part vicinity (vehicle rear part structure which concerns on 4th Embodiment) of the package tray which concerns on 4th Embodiment. It is sectional drawing corresponding to FIG. 1 which shows the modification of the package tray (vehicle rear part structure which concerns on 4th Embodiment) which concerns on 4th Embodiment. It is sectional drawing corresponding to FIG. 1 which shows the modification of the package tray (vehicle rear part structure which concerns on 5th Embodiment) which concerns on 5th Embodiment.

  Hereinafter, each embodiment of the present invention will be described with reference to FIGS. In each figure, the arrow FR indicates the front of the vehicle 12 in the front-rear direction, the arrow UP indicates the upper direction of the vehicle 12, and the arrow LF indicates the left side of the vehicle 12 in the left-right direction (width direction).

<Configuration of First Embodiment>
In FIG. 1, a portion of the vehicle 12 where the package tray 10 according to the first embodiment is provided and its vicinity (that is, the vehicle rear structure according to the first embodiment) are viewed in the vehicle width direction of the vehicle 12. 2 is a schematic cross-sectional view, and FIG. 2 is a perspective view of a portion of the vehicle 12 where the package tray 10 is provided as viewed obliquely from above.

  As shown in these drawings, the package tray 10 includes a package tray main body 14. The package tray main body 14 is formed in a flat plate shape corresponding to the space between the rear glass 16 and the upper back panel 18 behind the rear seat (not shown) of the vehicle 12 with the thickness direction generally extending in the vertical direction of the vehicle 12. Yes. As shown in FIG. 1, a support portion 22 is continuously formed at the rear end portion of the package tray main body 14. The support portion 22 includes a vertical wall portion 24. The vertical wall portion 24 is formed in a narrow plate shape whose thickness direction is approximately along the front-rear direction of the vehicle 12 and whose width direction is generally along the vertical direction of the vehicle 12, and from the rear end portion of the package tray main body 14 to the vehicle 12. It is extended downward.

  A mounting portion 26 is formed continuously from the lower end of the vertical wall portion 24. The mounting portion 26 is formed in a narrow plate shape whose thickness direction is generally along the vertical direction of the vehicle 12 and whose width direction is along the front-rear direction of the vehicle 12, and from the lower end portion of the vertical wall portion 24 to the rear of the vehicle 12. Has been extended towards. As described above, the vertical wall portion 24 has an upper end portion connected to the rear end portion of the package tray main body 14 and a lower end portion connected to the placement portion 26. For this reason, the upper surface of the mounting portion 26 is positioned below the upper surface of the package tray main body 14.

  On the mounting portion 26, a sound absorbing material 30 as a sound wave absorbing means is mounted. The sound absorbing material 30 is formed in a long square bar shape whose longitudinal direction is along the left-right direction of the vehicle 12 by, for example, a synthetic resin material such as urethane resin, and the front surface 30A and the lower surface 30D of the sound absorbing material 30 are both surfaces. It is fixed to the rear surface 24A of the vertical wall portion 24 and the upper surface 26A of the mounting portion 26 by a fixing means such as a tape or an adhesive and is supported by the support portion 22. Thus, the surfaces of the sound absorbing material 30 that are in contact with the support portion 22 of the package tray 10 are only the front surface 30A and the lower surface 30D, and the rear surface 30B and the upper surface 30C of the sound absorbing material 30 as exposed surfaces are in contact with the support portion 22. It is exposed.

  In addition, the vertical (thickness) dimension of the sound absorbing material 30 attached to the support portion 22 is set to be equal to or less than a step between the rear end portion on the upper surface of the package tray main body 14 and the upper surface of the placement portion 26. For this reason, the upper surface of the sound absorbing material 30 fixed to the support portion 22 in a state of being placed on the placement portion 26 is configured not to protrude upward from the rear end portion of the upper surface of the package tray main body 14. .

  On the other hand, the rear glass 16 is inclined so that the lower end portion thereof is positioned behind the vehicle 12 with respect to the upper end portion, and the lower end side of the rear glass 16 is separated from the upper surface 30C of the sound absorbing material 30 on the upper surface 30C. , And the lower end of the lower end reaches the rear lower side of the package tray main body 14 (package tray 10). On the other hand, the upper back panel 18 passes through the lower portion of the mounting portion 26 with the rear end side being separated from the lower surface or the rear end portion of the mounting portion 26, and behind the mounting portion 26. The lower end side of the rear glass 16 and the upper back panel 18 are integrally fixed to each other by an adhesive 42 provided on the rear glass 16 on the inner surface of the vehicle 12 and in the vicinity of the outer periphery of the rear glass 16.

  Thus, in the present embodiment, the space between the package tray 10 and the upper back panel 18 and the space between the package tray 10 and the rear glass 16 are the spaces behind the mounting portion 26 and the sound absorbing material 30. Are connected through. Further, a plurality of through holes 44 are formed in the upper back panel 18 in the vehicle width direction, and are set in the space on the package tray main body 14 side of the upper back panel 18 and the space on the opposite side, and thus in the rear portion of the vehicle 12. Are connected to each other (note that only one through hole 44 is shown in FIG. 2).

  Further, a certain range from the outer peripheral portion of the rear glass 16 including the lower end of the rear glass 16 to the inside is a ceramic print area, and a ceramic print 46 as a mask portion is applied to the rear glass 16 in this portion. The ceramic print 46 is black and opaque, and the adhesive 42 is hidden from the outside of the vehicle 12 (that is, from the outside of the rear glass 16) by applying the ceramic print 46 to the rear glass 16. Thereby, it becomes difficult to see the adhesive 42 from the outside of the vehicle 12, and the appearance of the vehicle 12 is improved. Here, the length of the package tray main body 14 in the front-rear direction of the package tray 10 is set so that the support portion 22 described above is positioned below the ceramic print 46.

<Operation and Effect of First Embodiment>
Next, the operation and effect of the present embodiment will be described.

  As described above, in the vehicle 12 to which the present package tray 10 is applied, the space on the package tray 10 side of the upper back panel 18 and the cargo room set at the rear of the vehicle 12 are connected. The space on the package tray 10 side, the space between the package tray 10 and the rear glass 16, and thus the interior of the vehicle 12 are connected. Thereby, air permeability is ensured. For this reason, for example, when the door of the vehicle 12 is closed, the air compressed inside the vehicle 12 can escape from the cargo compartment. Thereby, it can suppress that the door closed by the compressed air is pushed back. Further, even if the door and window glass of the vehicle 12 are closed due to the air permeability as described above, the window glass, the windshield glass, and further the fogging of the rear glass 16 is prevented. Can be suppressed.

  By the way, since the luggage compartment of the vehicle 12 and the cabin of the vehicle 12 are connected as described above, for example, the vibration sound (pattern noise) of the rear tire when the vehicle 12 travels as one aspect of sound waves is transmitted from the luggage compartment. It passes through the hole 44 and enters the space between the package tray 10 and the upper back panel 18. The vibration sound entering the space between the package tray 10 and the upper back panel 18 is reflected toward the rear of the vehicle 12 while being reflected by the package tray 10 and the upper back panel 18 and reflected by the upper back panel 18 and the rear glass 16. Thus, the space between the front package tray 10 and the rear glass 16, that is, the interior of the vehicle 12 is sought.

  Here, a support portion 22 is set at the rear end of the package tray 10, and a sound absorbing material 30 is attached to the support portion 22. For this reason, the vibration sound reflected by the rear glass 16 and the upper back panel 18 on the rear end side of the rear glass 16 and entering the sound absorbing material 30 is absorbed by the sound absorbing material 30. Thereby, since the vibration sound which goes into the room | chamber interior of the vehicle 12 is suppressed, quiet performance improves.

  Moreover, the sound absorbing material 30 is provided on the support portion 22 set at the rear end of the package tray 10. Here, since the rear glass 16 is inclined so that the lower end portion is positioned behind the vehicle 12 relative to the upper end portion, the distance between the upper surface of the package tray 10 including the upper surface of the sound absorbing material 30 and the rear glass 16 is the package tray 10. It becomes narrow at the rear end, that is, at the position where the sound absorbing material 30 is provided or in the vicinity thereof. And if a vibration sound passes through the position where the space | interval of the package tray 10 and the rear glass 16 became narrow, this sound pressure will become large. The vibration sound is absorbed by the sound absorbing material 30 in a state where the sound pressure is increased, so that the vibration sound is effectively absorbed and the silent performance can be effectively improved.

  Further, although the sound absorbing material 30 has a front surface 30A in contact with the rear surface 24A of the vertical wall portion 24 and a lower surface 30D in contact with the upper surface 24A of the vertical wall portion 24, the upper surface 30C and the rear surface 30B of the sound absorbing material 30 are in contact with the support portion 22. Not touching. In this way, in the square bar-shaped sound absorbing material 30, vibration sound is incident on the upper surface 30 </ b> C and the rear surface 30 </ b> B that are exposed without contacting the support portion 22 without being blocked by the support portion 22. Thus, since the surface area of the sound absorbing material 30 on which vibration sound can be incident can be increased, vibration sound can be effectively absorbed also in this sense, and quiet performance can be effectively improved.

  In the present package tray 10, the vertical dimension of the sound absorbing material 30 is set to be equal to or less than the step between the rear end portion on the upper surface of the package tray main body 14 and the upper surface of the mounting portion 26. For this reason, the upper surface of the sound absorbing material 30 fixed to the support portion 22 while being placed on the placement portion 26 does not protrude above the rear end portion of the upper surface of the package tray main body 14. Thereby, it becomes difficult to see the sound absorbing material 30 from the front of the package tray 10, that is, from the inside of the vehicle 12. For this reason, although the sound absorbing material 30 is provided, the appearance is not impaired.

  Further, in the present package tray 10, since the support portion 22 of the package tray 10 is located below the ceramic print 46, the sound absorbing material 30 on the placement portion 26 is located below the ceramic print 46. As described above, since the ceramic print 46 is black and opaque, it is difficult to see the sound absorbing material 30 from above or behind the rear glass 16 because the sound absorbing material 30 is located below the ceramic print 46. However, the appearance of the vehicle 12 from the outside is not impaired.

  From the viewpoint of the present invention described in each of claims 1 to 3, the vertical dimension of the sound absorbing material 30 is greater than the step difference between the rear end portion of the upper surface of the package tray body 14 and the upper surface of the mounting portion 26. It may be. In such a configuration, the sound absorbing material 30 protrudes upward from the rear end portion on the upper surface of the package tray main body 14. However, since the sound absorbing material 30 is hidden by a level difference between the rear end portion on the upper surface of the package tray main body 14 and the upper surface of the mounting portion 26, the appearance is not greatly impaired.

  In addition, in this Embodiment, although the mounting part 26 was extended from the vertical wall part 24 of the support part 22, and it was the structure which mounted the sound-absorbing material 30 on this mounting part 26, From Claim 1 From the viewpoint of the present invention described in each of the fifth aspect, the support portion 22 is configured only by the vertical wall portion 24 without including the placement portion 26 on which the sound absorbing material 30 is placed, and the vertical wall portion 24 is provided. Further, the sound absorbing material 30 may be supported by fixing the sound absorbing material 30 with a double-sided tape or an adhesive, or by inserting a needle protruding from the vertical wall portion 24 into the sound absorbing material 30.

<Second Embodiment>
Next, a second embodiment will be described. In describing each of the following embodiments including the present embodiment, basically the same as the previous embodiment than the embodiment described including the first embodiment. As for these parts, the same reference numerals are given and their detailed explanation is omitted.

  FIG. 3 is an enlarged perspective view showing the configuration of the main part of the package tray 60 (vehicle rear structure according to the present embodiment) according to the present embodiment.

  As shown in this figure, the vertical wall portion 24 of the support portion 22 of the package tray 60 has circular through holes 62 penetrating in the thickness direction of the vertical wall portion 24 at predetermined intervals in the left-right direction of the vehicle 12. Is formed. Further, circular through holes 64 penetrating in the thickness direction of the mounting portion 26 are formed in the mounting portion 26 of the support portion 22 of the package tray 60 at predetermined intervals in the left-right direction of the vehicle 12.

  As described above, in the package tray 60, the plurality of through holes 62 are formed in the vertical wall portion 24 of the support portion 22, and the plurality of through holes 64 are formed in the placement portion 26 of the support portion 22. For this reason, while the sound absorbing material 30 is mounted on the mounting portion 26 and the sound absorbing material 30 is fixed to the support portion 22, the front surface 30A of the sound absorbing material 30 is in contact with the rear surface 24A of the vertical wall portion 24. A part of the front surface 30 </ b> A of the sound absorbing material 30 is exposed to the front side of the vertical wall portion 24 through the through hole 62. In this state, the lower surface 30D of the sound absorbing material 30 is in contact with the upper surface 26A of the mounting portion 26, but a part of the lower surface 30D of the sound absorbing material 30 is located below the mounting portion 26 through the through hole 64. Exposed.

  Thereby, for example, in the space between the package tray 10 and the upper back panel 18, the vibration sound is reflected by the rear glass 16 of the upper back panel 18 and the package tray 10 and is reflected on the vertical wall portion 24 and the placement portion 26. When it goes, a part of the light passes through the through holes 62 and the through holes 64 and enters the front surface 30 </ b> A and the lower surface 30 </ b> D of the sound absorbing material 30. Thereby, also in the space between the package tray 10 and the upper back panel 18, a vibration sound can be absorbed with the sound-absorbing material 30, and quiet performance can be improved.

  In the present embodiment, the through hole 62 is formed in the vertical wall portion 24 of the support portion 22 and the through hole 64 is formed in the placement portion 26 of the support portion 22. However, the through-hole 62 may be formed in the vertical wall portion 24 and the mounting portion 26 may not be formed with the through-hole 64, or the mounting portion 26 may be formed without forming the through-hole 62 in the vertical wall portion 24. It is good also as a structure which forms the through-hole 64. FIG.

  In the present embodiment, the shape of the through holes 62 and 64 is circular, but the shape of the through holes 62 and 64 may be other than circular. In addition, the through holes 62 and the through holes 64 are formed in the vertical wall portion 24 and the mounting portion 26 at predetermined intervals in the left-right direction of the vehicle 12, but the positions where the through holes 62 and the through holes 64 are formed are also described. It is not limited to such a form and may be formed at an arbitrary position.

  For example, the formation positions of the through holes 62 and the through holes 64 in the vertical wall part 24 and the mounting part 26 are made in a staggered pattern, or the shape of the through holes 62 and the through holes 64 is a regular hexagon. The through holes 62 and the through holes 64 may be formed so as to be positioned in a honeycomb shape in the mounting portion 26. By setting the through holes 62 and the through holes 64 to such a formation position, the through holes 62 and Even if the through holes 64 are formed in the vertical wall portion 24 and the mounting portion 26, the strength of the vertical wall portion 24 and the mounting portion 26 can be secured.

<Third Embodiment>
Next, a third embodiment will be described.

  FIGS. 4 and 5 are views of the configuration of the main part of the package tray 80 according to the present embodiment (the vehicle rear structure according to the present embodiment) used to explain the first embodiment. Is shown by a cross-sectional view corresponding to FIG.

  As shown in this figure, the package tray 80 includes a sheet-like skin material 82. The skin material 82 includes a skin material body 84 corresponding to the package tray body 14, and the package tray body 14 is covered from above by the skin material body 84. A rearward extending portion 86 is continuously formed from the rear end portion of the skin material main body 84. The rear extension 86 covers the upper surface 30C of the sound absorbing material 30. The rear extension 86 only needs to extend rearward from the front end of the upper surface 30C of the sound absorbing material 30, and as shown in FIG. 4, the rear end of the rear extension 86 reaches the middle in the front-rear direction of the upper surface 30C. However, as shown in FIG. 5, the rear end of the rearward extension 86 may reach the rear end of the upper surface 30 </ b> C.

  In the package tray 80 having such a configuration, since the surface (upper surface) of the package tray main body 14 is not exposed by providing the skin material 82, the appearance is improved.

  On the other hand, in the package tray 80, the rearward extending portion 86 of the skin material 82 reaches the upper surface 30 </ b> C of the sound absorbing material 30. Here, the sound absorbing material 30 absorbs sound waves such as vibration sound due to its elasticity. For this reason, when considering a “spring system” in which the sound absorbing material 30 is a “spring”, the rearward extending portion 86 extended on the upper surface 30C of the sound absorbing material 30 corresponds to a “mass (mass body)”. For this reason, as shown by a solid line in FIG. 6, when the sound wave such as the vibration sound is absorbed only by the sound absorbing material 30, the sound absorption rate of the sound wave incident on the upper surface 30 </ b> C increases as the frequency increases.

  However, as shown by the dotted line in FIG. 6, when the rear extension 86 is extended on the upper surface 30C of the sound absorbing material 30, the sound absorption coefficient of the sound wave incident on the upper surface 30C peaks at a constant frequency. As indicated by the alternate long and short dash line in FIG. 6, when the rear end of the rearward extending portion 86 approaches the rear end of the upper surface 30 </ b> C, the frequency at which the sound absorption coefficient peaks becomes lower than when it is far away.

  For this reason, in the package tray 80, the vibration sound reflected by the upper back panel 18 and the rear glass 16 is incident from the rear surface 30 </ b> B of the sound absorbing material 30. Can absorb. Further, the vibration sound reflected by the rear glass 16 is incident from the upper surface 30C of the sound absorbing material 30, so that the vibration sound has a lower frequency component than the component that is effectively absorbed by being incident from the rear surface 30B. The peak frequency component corresponding to the length of the rear extension 86 from the rear end of the material body 84 can be effectively absorbed. As described above, since one sound-absorbing material 30 can effectively absorb components of different frequencies of sound waves such as vibration sound, a specific sound can be effectively absorbed and quiet performance can be improved.

<Fourth embodiment>
Next, a fourth embodiment will be described.

  FIGS. 7 and 8 are views of the configuration of the main part of the package tray 110 according to the present embodiment (vehicle rear structure according to the present embodiment) used to explain the first embodiment. Is shown by a cross-sectional view corresponding to FIG.

  As shown in this figure, the package tray 110 includes a sheet-like skin material 112. The rearward extending portion 86 of the skin material 112 reaches the rear end of the upper surface 30 </ b> C of the sound absorbing material 30. Further, a downward extending portion 114 is continuously extended downward from the rear end of the rear extending portion 86 of the skin material 112, and the rear surface 30 </ b> B of the sound absorbing material 30 is rearward by the downward extending portion 114. Covered from. The downward extending portion 114 only needs to extend downward from the upper end of the rear surface 30B of the sound absorbing material 30, and as shown in FIG. 7, the lower end of the downward extending portion 114 extends only to the middle in the vertical direction of the rear surface 30B. The lower end of the downward extending portion 114 may reach the lower end portion of the rear surface 30B as shown in FIG.

  In the package tray 110 having such a configuration, considering a “spring system” in which the sound absorbing material 30 is a “spring”, the rear extension 86 and the lower extension 114 correspond to a “mass”. . Therefore, the peak of the frequency of the sound wave absorbed by the sound absorbing material 30 further changes to the low frequency side as compared with the configuration in which the downward extending portion 114 is not provided. For this reason, the sound absorbing material 30 can effectively absorb a sound containing a lot of components having a relatively low frequency, such as a vibration sound (pattern noise) of the rear tire, and the quiet performance can be improved.

  Further, although the frequency to be absorbed in vibration sound or the like varies depending on the vehicle type, the extension dimension of the rear extension part 86 from the skin material body 84 and the extension dimension of the lower extension part 114 from the rear extension part 86 are different. By appropriately setting according to the frequency to be absorbed, it is possible to effectively absorb the sound of the desired frequency (in other words, the sound of the frequency to be absorbed can be easily controlled).

<Fifth embodiment>
Next, a fifth embodiment will be described.

  FIG. 9 corresponds to FIG. 1 in which the configuration of the main part of the package tray 140 (the vehicle rear structure according to the present embodiment) according to the present embodiment is used to explain the first embodiment. It is shown by a cross-sectional view.

  As shown in this figure, the present package tray 140 has a support portion 142 in place of the support portion 22 formed at the rear end of the package tray main body 14. The support part 142 includes an upper wall part 144. The upper wall portion 144 extends continuously from the rear end of the package tray main body 14 to the rear of the vehicle 12 (more specifically, the rear lower portion of the vehicle 12). The upper wall portion 144 is curved downward near the rear end portion.

  A support wall 146 extends continuously downward from the rear end of the upper wall 144. The sound absorbing material 30 has the rear surface 30B in contact with the front surface 146A of the support wall 146 and the upper surface 30C in contact with the lower surface 144A of the upper wall portion 144, and the front surface 146A of the support wall 146 by a fixing means such as double-sided tape or adhesive. The upper wall 144 is fixed to the lower surface 144A.

  Further, a through hole 148 that penetrates in the thickness direction is formed in the upper wall portion 144, and a through hole 150 that penetrates in the thickness direction is formed in the support wall 146. The through holes 148 and 150 are formed at predetermined intervals in the left-right direction of the vehicle 12 like the through holes 62 and the through holes 64 in the second embodiment.

  In the present embodiment having such a configuration, the upper surface 30C and the rear surface 30B of the sound absorbing material 30 are in contact with the lower surface 144A of the upper wall portion 144 and the front surface 146A of the support wall 146, but the front surface of the sound absorbing material 30 as an exposed surface. 30 </ b> A and the lower surface 30 </ b> D are exposed without contacting the support portion 142. For this reason, when the vibration sound that has passed through the through hole 44 and entered the space between the package tray 10 and the upper back panel 18 is reflected by the package tray 10 and the upper back panel 18, When the light is incident on the front surface 30 </ b> A or the lower surface 30 </ b> D of the material 30, vibration sound is absorbed by the sound absorbing material 30.

  Furthermore, when the vibration sound that has reached the rear of the support wall 146 is reflected by the rear glass 16 and the upper back panel 18 and travels toward the space between the package tray 140 and the rear glass 16, the vibration sound is generated on the rear surface of the support wall 146. Or incident on the upper surface of the upper wall 144 and reflected.

  Here, in this package tray 140, a plurality of through holes 148 are formed in the upper wall portion 144 of the support portion 142, and a plurality of through holes 150 are formed in the support wall 146 of the support portion 142. Therefore, although the upper surface 30C and the rear surface 30B of the sound absorbing material 30 are in contact with the upper wall portion 144 and the support wall 146 of the support portion 142, the upper surface 30C is exposed above the through hole 148 through the through hole 148. The rear surface 30 </ b> B is exposed behind the support wall 146 through the through hole 150. Therefore, part of the vibration sound toward the rear surface of the support wall 146 and the upper surface of the upper wall portion 144 passes through the through holes 148 and 150 and enters the upper surface 30C and the rear surface 30B of the sound absorbing material 30. Thereby, a vibration sound can be effectively absorbed with the sound-absorbing material 30, and quiet performance can be improved.

  In the present embodiment, the sound absorbing material 30 is provided below the upper wall portion 144 and on the front side of the support wall 146. For this reason, the sound-absorbing material 30 does not appear from the interior side of the vehicle 12 or from the upper side of the rear glass 16, so that the appearance is good.

DESCRIPTION OF SYMBOLS 10 Package tray 12 Vehicle 14 Package tray main body 16 Rear glass 18 Upper back panel 22 Support part 26 Mounting part 30 Sound-absorbing material 30A Front surface (exposed surface in 5th Embodiment)
30B rear surface (exposed surface in the first embodiment)
30C Top surface (exposed surface in the first embodiment)
30D bottom surface (exposed surface in the fifth embodiment)
46 Ceramic print (mask part)
60 Package tray 62 Through hole 64 Through hole 80 Package tray 82 Skin material 110 Package tray 112 Skin material 140 Package tray 142 Support part

Claims (8)

A package tray body provided between the rear glass and the upper back panel;
A support provided at a rear end of the package tray body;
In the support portion , it is placed on a placement portion provided below the upper surface of the package tray main body and is supported by a surface facing the rear of the vertical wall portion constituting the support portion, and has an exposed surface, A sound-absorbing material that absorbs sound waves passing between the rear glass and the package tray main body from between the upper back panel and the package tray main body through the rear end and the rear glass;
Package tray with.   The package tray according to claim 1, wherein at least a part of a surface of the sound absorbing material facing the rear glass is the exposed surface.   The package tray according to claim 1 or 2, wherein the sound absorbing material is supported by the support portion in a state in which a lower end of the sound absorbing material is positioned below an upper end of the package tray main body.   The package tray according to claim 3, wherein the sound absorbing material is supported by the support portion in a state where the upper end of the sound absorbing material is located at the same position as the upper end of the package tray main body or below the upper end of the package tray main body. . The package tray according to any one of claims 1 to 4 , further comprising a skin material that covers a surface of the package tray main body and covers at least a part of the sound absorbing material. The package tray according to any one of claims 1 to 5 , wherein a through hole that exposes the sound absorbing material to the opposite side of the sound absorbing material in the supporting portion is formed in the supporting portion. The support is provided so that the sound absorbing material is positioned below a colored mask portion that is applied to the rear glass along a lower end of the rear glass and shields an adhesive that bonds the lower end of the rear glass and the vehicle body from the outside of the rear glass. The package tray according to any one of claims 1 to 6 , wherein the position of the portion is set. A rear glass provided at the rear of the vehicle, the lower end of which is located rearward of the upper end and is inclined in the front-rear direction with respect to the vertical direction as a whole;
An upper back panel provided under the rear glass;
A package tray having a package tray body provided between the rear glass and the upper back panel, and a support tray provided at a rear end of the package tray body;
In the support portion , it is placed on a placement portion provided below the upper surface of the package tray main body and is supported by a surface facing the rear of the vertical wall portion constituting the support portion, and has an exposed surface, A sound-absorbing material that absorbs sound waves that pass between the rear glass and the rear glass from between the upper back panel and the package tray and pass between the rear glass and the package tray;
A vehicle rear structure comprising:

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