Vehicle storage cover member

Abstract

A vehicle storage cover member (20) that covers an opening of a storage area (13) of a vehicle (10) includes a cover body (20A), a buffer member (30), and protective walls (26, 28). The cover body (20A) has a plate shape having a back surface (22), and is arranged such that the back surface (22) opposes the receiving area (13). The cover body (20A) comprises an opposite part, and the opposite part is opposite to a supporting part (15) for supporting the cover body (20A) of the storage area. The buffer member (30) has a mounting surface (32) by which the buffer member (30) is mounted on the back surface side of the opposing portion. The protective walls (26, 28) protrude from the back surface side of the cover body (20A) and have a protruding size smaller than the thickness of the buffer member (30). The protective walls (26, 28) cover the attachment surface (32) of the buffer member (30).

Description

Technical Field

[0001] The technology described herein relates to vehicle storage cover components. Background Art

[0002] A deck board is known as a cover member for covering a storage section in a vehicle. The deck board is arranged on the upper surface of a battery box (storage section) arranged below a luggage space of the vehicle. A buffer member is provided on the lower surface of the deck board to suppress noise that may be caused by vibration of the deck board and the battery box. An example of such a deck board is disclosed in Japanese Patent Laid-Open No. 2018-43610. Summary of the invention

[0003] When the deck is installed on and removed from the luggage space, the buffer member of the deck may collide with the corner of the battery box or the object stored in the storage portion. This may add force to the buffer member to separate from the deck. In particular, if the buffer member collides with the battery box or the object stored in the storage portion so that the corner of the battery box or the object is pushed into the connection between the buffer member and the deck, or the corner or the object adheres to the adhesive tape used to fix the buffer member to the deck, the buffer member is easily separated from the deck.

[0004] The technology described herein has been made in view of the foregoing circumstances. An object is to provide a vehicle storage cover member from which a buffer member is less likely to be separated.

[0005] The technology described herein relates to a vehicle storage cover member that covers an opening of a storage area of ​​a vehicle. The vehicle storage cover member includes a cover body, a buffer member, and a protective wall. The cover body is in the shape of a plate having a back surface, and is arranged so that the back surface is opposite to the storage area. The cover body includes a relative portion, which is opposite to a support portion of the storage area that supports the cover body. The buffer member has a mounting surface, and the buffer member is mounted on the back surface side of the relative portion using the mounting surface. The protective wall protrudes from the back surface side of the cover body and has a protruding size that is smaller than the thickness of the buffer member. The protective wall covers the mounting surface of the buffer member.

[0006] According to this configuration, the corner of the storage area or the object stored in the storage area is less likely to hit the mounting surface of the buffer member and is less likely to enter the portion between the mounting surface and the back surface of the cover body by utilizing the protective wall. Therefore, the buffer member is less likely to separate from the back surface of the plate body.

[0007] The opposing portion may include a mounting portion at which the buffer member is mounted. The mounting portion may include a protrusion on which the buffer member is mounted, and the protrusion may protrude so that an outer surface of the buffer member, which is an opposite surface to the mounting surface, is arranged outside the protective wall. According to this configuration, the thickness of the buffer member can be reduced and the production cost can also be reduced.

[0008] The vehicle storage cover member may be configured to cover the opening of the storage area by a sliding operation along the opening of the storage area. The protection wall may extend at least in a direction intersecting with a direction of the sliding operation.

[0009] According to the above configuration, separation of the buffer member is surely suppressed by the protection wall arranged to cover the portion of the buffer member that is likely to collide with the corner of the storage area or the object stored in the storage area.

[0010] The protection wall may include a front protection wall located at a vehicle front side of the buffer member and a rear protection wall located at a vehicle rear side of the buffer member.

[0011] According to the above configuration, when installing and removing the deck by sliding operation, the corner of the storage area or the object stored in the storage area is easy to hit the buffer member from the front and rear sides. By using the protective wall arranged to cover the part of the buffer member that is easy to be hit, the separation of the buffer member is surely suppressed.

[0012] The protective wall may extend around the buffer member. According to this configuration, separation of the buffer member is surely suppressed.

[0013] The protection wall may protrude further than the protruding portion. According to this configuration, separation of the buffer member is surely suppressed.

[0014] The protection wall may include a plurality of protection walls, and the opposing portion may include a recess defined by the plurality of protection walls, and the buffer member is arranged in the recess. According to this configuration, separation of the buffer member is suppressed with a simple configuration.

[0015] The buffer member may include a plurality of buffer members, and the protective wall may include a plurality of protective walls. The cover body may include a first portion having a first thickness and a second portion having a second thickness, and the first thickness is greater than the second thickness. The relative portion may include a first relative portion as a part of the first portion and a second relative portion as a part of the second portion. The first relative portion may include a recess in the back surface, in which one of the plurality of buffer members is disposed, and some of the plurality of protective walls may extend from the back surface as side walls of the recess. Other of the plurality of protective walls may protrude from the back surface of the second relative portion, and another of the plurality of buffer members may be disposed between the other of the plurality of protective walls.

[0016] According to the above configuration, using the cover body having portions with different thicknesses, the protection wall can be provided with the entire cover member including the cover body and the buffer member having a constant thickness.

[0017] According to the present disclosure, it is possible to provide a vehicle storage cover member from which the buffer member is less likely to be separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the cargo space of the vehicle as viewed from the rear.

[0019] Figure 2 This is a perspective view of the deck viewed from the back surface side.

[0020] Figure 3 It is an enlarged perspective view of a portion of the deck.

[0021] Figure 4 This is a bottom view of the deck.

[0022] Figure 5 It is part of the deck along Figure 4 Cross-sectional view along line VV in FIG.

[0023] Figure 6 It is part of the deck along Figure 4 Cross-sectional view along line VI-VI in FIG.

[0024] Figure 7 is a cross-sectional view of a portion of a deck according to a second embodiment, taken along the front-rear direction of a vehicle.

[0025] Figure 8 is a cross-sectional view of a portion of a deck according to another embodiment along the front-rear direction of a vehicle.

[0026] Fig. 9 is a cross-sectional view of a portion of a deck according to other embodiments along the front-rear direction of a vehicle.

[0027] Fig.10 is a cross-sectional view of a portion of a deck according to other embodiments along the width direction of a vehicle. DETAILED DESCRIPTION

[0028] <First Embodiment>

[0029] Will refer to Figures 1 to 6 A first embodiment of the deck 20 (vehicle storage cover member) is described. The deck 20 is installed in the cargo space 12 of the vehicle 10. In the drawings, arrows FR and RR point to the front and rear sides, respectively, with respect to the front-rear direction of the vehicle, arrows UP and DW point to the upper and lower sides, respectively, and arrows R and L point to the right and left sides, respectively, with respect to the width direction of the vehicle.

[0030] Figure 11 is a perspective view of a vehicle 10 including a rear tailgate, such as a hatchback and a station wagon. The vehicle 10 includes a cargo space 12 located behind a rear seat 11. The cargo space 12 is covered by the rear tailgate from the rear side of the vehicle. When the rear tailgate is opened, the cargo space 12 can be accessed so that luggage can be put in and taken out of it.

[0031] The deck 20 (vehicle storage cover member) is arranged in the cargo space 12 and is configured as the floor of the cargo space 12. The surface of the deck 20 is defined as a floor surface 21. The deck 20 includes a plate body 20A (an example of a cover body) as a rectangular plate member. The cargo space 12 includes a storage area 113 located below the deck 20. The storage area 113 includes a storage recess 13, and tires and tools can be stored in the storage recess 13. The deck 20 (plate body 20A) is arranged horizontally and covers the storage recess 13 from above. As shown in FIG. Figure 1 As shown, the storage area 113 includes a separation wall 16 (an example of a support portion) that divides the internal space of the storage recess 13. The internal space of the storage recess 13 is defined by the peripheral wall 14. The storage area 113 includes a flange portion 15 (an example of a support portion) extending outward from the upper edge of the peripheral wall 14. The bulkhead 20 can be installed on the storage area 113 to cover the opening of the storage recess 13 by sliding the bulkhead 20 forward from the rear side with the back surface 22 of the bulkhead 20 facing downward.

[0032] Figure 2 2 is a perspective view of the deck 20 viewed from the back surface 22 (lower surface) side. The board body 20A of the deck 20 includes edge portions 23 at the front edge portion and the left and right edge portions and a cover portion 27 at the middle portion. The edge portion 23 has a band shape formed into a U shape and extends along the right edge, the front edge, and the left edge of the board body 20A. The edge portion 23 is thicker than the cover portion 27. The edge portion 23 (an example of an opposing portion) is to be arranged on the flange portion 15 (reference Figure 1 )superior.

[0033] The cover 27 of the plate body 20A is arranged to face the storage space of the storage recess 13 and to cover the storage recess 13. A step 29 is formed between the edge 23 on the back surface 22 of the deck 20 and the cover 27. Figure 1 As shown, the floor surface 21 as the front side of the deck 20 (board body 20A) is completely flat and planar. The edge portion 23 protrudes downward from the cover portion 27.

[0034] like Figure 2As shown, the plate body 20A includes an edge portion 23 (opposite portion) opposite to the flange portion 15 (support portion), a separation wall relative portion 116 (opposite portion) opposite to the separation wall 16 (support portion), and a rear edge relative portion 117 (opposite portion) opposite to a portion of the rear decorative member (support portion). The separation wall relative portion 116 and the rear edge relative portion 117 are parts of the cover portion 27. The buffer member 30 is located on the relative portion including the edge portion 23, the separation wall relative portion 116 and the rear edge relative portion 117. The buffer member 30 has a block shape (cubic shape) and can be made of polyurethane or non-woven fabric. Since the buffer member 30 is located between each of the flange portion 15, the separation wall 16 and the rear decorative member and the plate body 20A, the plate body 20A is not in direct contact with the flange portion 15, the separation wall 16 and the rear decorative member. Therefore, it is unlikely to cause noise due to vibration caused by the operation of the vehicle. The cushioning member 30 may be fixed to the plate body 20A by any method, such as bonding with an adhesive, attaching with an adhesive tape, ultrasonic welding, and thermal welding. Figure 5 and Figure 6 As shown, the cushioning member 30 is fixed to the plate body 20A using an adhesive tape 33 .

[0035] The deck 20 of the present embodiment includes a wall (an example of a protective wall) located on the back surface 22 side of the board body 20A and surrounding the buffer member 30. The back surface 22 of the edge portion 23 is defined as the back surface 22A, and the back surface 22 of the cover portion 27 is defined as the back surface 22B. The wall on the back surface 22A side of the edge portion 23 and the wall on the back surface 22B side of the cover portion 27 have different configurations.

[0036] like Figure 3 and Figure 5 As shown, the edge portion 23 includes a recess 24 that is recessed from the back surface 22A and in which the cushioning member 30 can be fitted. When the cushioning member 30 is fitted and fixed in the recess 24, the cushioning member 30 is surrounded by the inner wall 26 of the recess 24. The depth D of the recess 24 is smaller than the thickness T1 (D <T1)。

[0037] like Figure 5As shown, when the buffer member 30 is fixed to the bottom 25 (an example of a mounting portion) of the recess 24, the buffer member 30 further protrudes from the back surface 22A of the edge portion 23. That is, the lower surface 31 (an example of an outer surface) of the buffer member 30 is lower than the back surface 22A of the edge portion 23 by the protruding dimension H1. When the buffer member is fixed to the bottom 25 of the recess 24, the lower surface 31 of the buffer member 30 is not on the same level as the back surface 22A. The buffer member 30 further protrudes than the top end of the inner wall 26 and is lower than the top end of the inner wall 26. The top end of the inner wall 26 is part of the back surface 22A. When the buffer member 30 is assembled in the recess 24 and fixed to the bottom 25 of the recess 24, the connection portion 100 of the bottom 25 and the mounting surface 32 of the buffer member 30 is covered by the inner wall 26 (an example of a protective wall) of the recess 24 from the lateral direction (specifically, the front-rear direction and the left-right direction). That is, the mounting surface 32 of the buffer member 30 fixed to the bottom 25 of the recess 24 is covered by the inner wall 26. The inner wall 26 of the recess 24 is defined as a protective wall.

[0038] The depth D of the recess 24 is preferably 0.5 mm or more. In the case where the depth D of the recess 24 is 0.5 mm or more, any foreign matter is less likely to reach the connection portion 100 of the bottom 25 of the recess 24 and the mounting surface 32 of the buffer member 30. That is, with this configuration, any foreign matter is less likely to reach the mounting surface 32 of the buffer member 30 fixed to the bottom 25 of the recess 24.

[0039] like Figure 3 and Figure 6 As shown, the separation wall opposing portion 116 of the cover portion 27 includes a protruding wall 28 (an example of a protective wall) protruding from the back surface 22B. The protruding wall 28 is configured to have a ring shape when viewed from the top and surrounds the buffer member 30. A recess 44 is formed inside the ring-shaped protruding wall 28. A portion of the back surface 22B is configured as a bottom 45 (mounting portion) of the recess 44. The buffer member 30 is mounted on the bottom 45. The protruding dimension H2 (height) of the protruding wall 28 is smaller than the thickness T2 (H2 <T2)。

[0040] like Figure 6As shown, in the case where the buffer member 30 is fixed to the bottom 45 (mounting portion) of the recess 44 defined by the protruding wall 28, the buffer member 30 protrudes further than the protruding top end (lower end) of the protruding wall 28 by the protruding dimension H3. That is, the lower surface 31 (outer surface) of the buffer member 30 fixed to the bottom 45 (corresponding to a part of the back surface 22B) of the recess 44 surrounded by the protruding wall 28 is not on the same level as the protruding top end of the protruding wall 28. The lower surface 31 of the buffer member 30 is lower than the protruding top end of the protruding wall 28. In the case where the buffer member 30 is assembled in the recess 44 surrounded by the protruding wall 28 and fixed to the bottom 45 of the recess 44, the bottom 45 as a part of the back surface 22B and the connection portion 150 of the mounting surface 32 of the buffer member 30 are covered by the protruding wall 28 (protective wall) from the lateral direction (specifically, the front-rear direction and the left-right direction). That is, the mounting surface 32 of the buffer member 30 as a part fixed to the back surface 22B is covered by the protruding wall 28. The protruding wall 28 is defined as a protective wall.

[0041] The protruding dimension H2 of the protruding wall 28 from the back surface 22B is preferably 0.5 mm or more. In the case where the protruding dimension H2 of the protruding wall 28 is 0.5 mm or more, any foreign matter is unlikely to reach the connection portion 100 between the bottom 45 (back surface 22B) and the mounting surface 32 of the buffer member 30. The thickness T1, T2 of the buffer member 30 mounted on the edge portion 23 and the separating wall opposing portion 116 can be appropriately determined according to the depth D of the recess 24, the protruding dimension H2 of the protruding wall 28, and the position of the flange portion 15 and the upper edge of the separating wall 16.

[0042] When the opening of the storage recess 13 is covered by the cabin board 20 of the present embodiment, the cabin board 20 moves forward from the rear side of the vehicle with the back surface 22 facing downward. When a cabin board that does not include the inner wall 26 or the protruding wall 28 covering the buffer member 30 moves, the buffer member may hit the corner between the peripheral wall 14 and the flange portion 15, the corner of the separation wall 16, or an object (such as a tire) stored in the storage recess 13. In this case, a force is added to the buffer member to separate from the back surface of the cabin board, and the buffer member can be separated from the back surface. In particular, if the buffer member hits the corner or the object and the corner of the object is pushed into the connection between the mounting surface of the buffer member and the cabin board or adhered to the adhesive tape on the mounting surface of the buffer member, the buffer member is more easily separated from the cabin board.

[0043] According to the cabin board 20 of the present embodiment, the connection portion 100, 150 between the back surface 22 of the plate body 20A and the mounting surface 32 of the buffer member is covered by the inner wall 26 or the protruding wall 28 from the lateral side (peripheral side) of the buffer member 30. Therefore, the buffer member 30 is less likely to hit the corner or the object accommodated in the accommodation recess 13. Even if the portion of the buffer member 30 that further protrudes from the inner wall 26 or the protruding wall 28 (the portion away from the mounting surface 32) hits any foreign matter, it is less likely to add a strong force to the buffer member 30, and the buffer member 30 is deformed so that the cabin board 20 can move without separating the buffer member 30 from the plate body 20A.

[0044] Next, the operation and effect of the present embodiment will be described. The cabin panel 20 of the present embodiment includes a plate body 20A and a buffer member 30. The plate body 20A has a plate shape and is arranged so that the back surface 22 of the plate body 20A faces the storage recess 13. The buffer member 30 is installed on the back surface 22 side of the edge portion 23 opposite to the flange portion 15 and the separation wall opposite portion 116 opposite to the separation wall 16. The buffer member 30 has a mounting surface 32, and the buffer member 30 is mounted on the bottom 25, 45 using the mounting surface 32. The inner wall 26 and the protruding wall 28 are on the back surface 22. The inner wall 26 has a height (depth D) less than the thickness T1 of the buffer member 30 and covers the mounting surface 32 from the outer peripheral side of the mounting surface 32 relative to the bottom 25. The protruding wall 28 has a height (protruding dimension H2) less than the thickness T2 of the buffer member 30 and covers the mounting surface 32 from the outer peripheral side of the mounting surface 32 relative to the bottom 45 (back surface 22B).

[0045] According to the above configuration, by using the inner wall 26 and the protruding wall 28, the corner of the storage recess 13 or the object stored in the storage recess 13 is less likely to hit the mounting surface 32 of the buffer member 30 and is less likely to enter the connection between the mounting surface 32 and the bottom 25, 45. Therefore, the buffer member 30 is less likely to be separated from the plate body 20A.

[0046] The opening of the storage recess 13 is covered by the deck 20 by sliding the deck 20 in the vehicle front-rear direction along the opening. Protruding walls 28 protruding from the back surface 22 are arranged on the front and rear sides of the buffer member 30.

[0047] The corner of the storage recess 13 or the object stored in the storage recess 13 is easy to hit the buffer member 30 from the front and rear sides when installing and removing the cabin board 20 by sliding operation. The separation of the buffer member 30 is surely suppressed by the protruding wall 28 arranged to cover the portion of the buffer member 30 that is easy to be hit.

[0048] <Second Embodiment>

[0049] Next, we will refer to Figure 7Describe the second embodiment. Hereinafter, the structures different from those of the first embodiment will be described, and the structures similar to those of the first embodiment are denoted by the same reference numerals and will not be described.

[0050] As Figure 7 shown, the deck plate 120 of the present embodiment includes an annular protruding wall 28 that protrudes from the back surface 122B of the separation wall opposing portion 166 of the lid portion. The buffer member 130 is mounted on the bottom 22C (mounting portion, protruding portion) of the recess 124 surrounded and defined by the protruding wall 28. The difference between the present embodiment and the first embodiment is that the bottom 22C protrudes downward and has an arc shape.

[0051] The protruding dimension (height) H4 of the bottom 22C measured from the back surface 122B of the separation wall opposing portion 166 of the lid portion to the top 22T (lowest end) of the bottom 22C is preferably smaller than the protruding dimension (height) H2 of the protruding wall 28 measured from the back surface 122B to the top end of the protruding wall 28 (H4 < H2). That is, the protruding wall 28 protrudes further than the bottom 22C. The protruding dimension H2 of the protruding wall 28 from the back surface 122B is preferably 0.5 mm or more.

[0052] The protruding dimension H5 of the buffer member 130 measured from the top end of the protruding wall 28 to the lower surface 131 corresponding to the top 22T of the bottom 22C of the buffer member 30 is almost equal to the protruding dimension H3 of the buffer member 30 from the top end of the protruding wall 28 in the structure (the structure of the first embodiment) without the protruding bottom 22C (H5 ≈ H3). With this structure, vibration can be effectively absorbed by the deformation of the buffer member 130. The lower surface 131 (outer surface) of the buffer member 130 is lower than the protruding wall 28 by the protruding dimension H5.

[0053] According to the present embodiment, similar to the first embodiment, it is less likely that foreign matter is pushed into the connection portion 160 between the bottom 22C of the recess 124 on the back surface 122B side of the separation wall opposing portion 166 and the mounting surface 132 of the buffer member 130. In addition, the thickness T3 of the buffer member 130 can be smaller than that of the first embodiment (T3 < T2). Therefore, the manufacturing cost (material cost) can be suppressed.

[0054] <Other Embodiments>

[0055] The present disclosure is not limited to the embodiments shown in the above and the drawings. The following embodiments may be included within the technical scope of the technology described herein.

[0056] (1) In the structure of the deck plate 20 of the present embodiment, as Figure 6 and Figure 7 shown, the top end (lower end) of the protruding wall 28 has an edge; however, as Figure 8 As shown, the opposing separation wall portion 216 of the lid portion of the deck plate 220 may include a protruding wall 128 having a circular top end.

[0057] (2) In the structure of the deck plates 20 and 120 of the above-described embodiment, the opposing separation wall portions 116 and 166 of the lid portion include an annular protruding wall 28. However, two protruding walls may be respectively arranged on the front side and the rear side of the buffer member, extending parallel to each other in a direction crossing the sliding direction of the deck plate, and no walls may be provided on the right side and the left side. The protruding wall having such a structure can be particularly effectively used for a buffer member having a long shape that is long in the left-right direction.

[0058] (3) In the second embodiment, the bottom 22C of the recess 124 surrounded by the annular protruding wall 28 and for mounting the buffer member 130 has a downwardly protruding arched shape. However, as Fig. 9 shown, the bottom 325 (mounting portion) for mounting the buffer member 230 may include a rib-shaped protruding portion 22D (protruding portion) protruding downward.

[0059] (4) In the second embodiment, the downwardly protruding bottom 22C is inside the protruding wall 28 on the opposing separation wall portion 166. However, as Fig.10 shown, the bottom 422C (mounting portion, protruding portion) or the protruding portion having a protruding dimension H6 (H6 < D) may be included in a recess 424 formed in the back surface 422A of the edge portion 423. The recess 424 includes an inner wall 426, and the buffer member 130 arranged in the recess 424 is surrounded by the inner wall 426. According to this structure, the thickness T4 of the buffer member 130 can be made smaller than that of the first embodiment (T4 < T1), and the cost for materials can be reduced.

[0060] (5) In the above-described embodiment, as a vehicle storage lid member, the deck plates 20, 120, 220, 320, and 420 mounted in the cargo space 12 of the vehicle 10 are described. However, the technology described herein is not necessarily applied to the deck plate, but can be applied to a tonneau board, which is another example of one or more vehicle storage lid members included in a train, an aircraft, and a ship, and has various variations.

Claims

1. A vehicle storage cover member, which covers an opening of a storage area of ​​a vehicle, the vehicle storage cover member comprising: a cover body having a plate shape having a back surface, and arranged so that the back surface is opposite to the storage area, the cover body including an opposing portion opposite to a supporting portion of the storage area supporting the cover body; a buffer member having a mounting surface, the buffer member being mounted on the back surface side of the opposing portion using the mounting surface; and A protection wall protrudes from the back surface side of the cover body and has a protrusion dimension smaller than a thickness of the buffer member, the protection wall covering the mounting surface of the buffer member.

2. The vehicle storage cover member according to claim 1, wherein The opposing portion includes a mounting portion at which the buffer member is mounted, and The mounting portion includes a protrusion on which the buffer member is mounted, and the protrusion protrudes so that an outer surface of the buffer member, which is an opposite surface to the mounting surface, is arranged outside the protection wall.

3. The vehicle storage cover member according to claim 1 or 2, wherein The vehicle storage cover member is configured to cover the opening of the storage area by a sliding operation along the opening of the storage area, and The protection wall extends at least in a direction intersecting with a direction of the sliding operation.

4. The vehicle storage cover member according to claim 1 or 2, wherein the protection wall includes a front protection wall located on a vehicle front side of the buffer member and a rear protection wall located on a vehicle rear side of the buffer member. 5 . The vehicle storage cover member according to claim 1 , wherein the protective wall extends around the buffer member. The vehicle storage cover member according to claim 2 , wherein the protection wall protrudes further than the protruding portion.

7. The vehicle storage cover member according to claim 1, wherein The protective wall includes a plurality of protective walls, and The opposing portion includes a recessed portion defined by the plurality of protection walls, and the buffer member is arranged in the recessed portion.

8. The vehicle storage cover member according to claim 1, wherein The buffer member includes a plurality of buffer members, The protective wall comprises a plurality of protective walls, The cover includes a first portion having a first thickness and a second portion having a second thickness, and the first thickness is greater than the second thickness, The opposing portion includes a first opposing portion as a part of the first portion and a second opposing portion as a part of the second portion, the first opposing portion includes a recess in the back surface, one of the buffer members is disposed in the recess, and some of the plurality of protection walls extend from the back surface as side walls of the recess, and Other ones of the plurality of protection walls protrude from the back surface of the second opposing portion, and another one of the plurality of buffer members is arranged between the other ones of the plurality of protection walls.

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