JP7340686B2 - inner box structure - Google Patents

Description

The present invention relates to an inner box structure.
This application claims priority based on Japanese Patent Application No. 2020-043477 filed in Japan on March 12, 2020, the contents of which are incorporated herein.

As described in Patent Document 1, some saddle-riding type vehicles include a leg shield on the front side of an occupant's leg. It is known that the leg shield is provided with an inner box with a lid on the rear side of the vehicle (occupant side). (For example, see Patent Document 1).

JP 2018-52438 Publication

The conventional inner box structure described above has the following problems. That is, since the lid is opened so as to protrude toward the passenger, the opened lid tends to come into contact with the feet of the passenger. On the other hand, a saddle type vehicle can be used to travel with items that cannot fit in the inner box stored therein with the lid open. However, the above-mentioned conventional inner box structure has a problem in that it hinders the above-mentioned usage.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an inner box structure that allows for easy running even when the lid of the inner box provided on the passenger side of the leg shield is open.

A first aspect of the present invention includes a box main body (27) supported on the vehicle rear side of a leg shield (16) of a saddle-ride type vehicle (1) and having a box opening (27a) that opens upward; a lid (28) that covers the opening (27a) in an openable/closable manner, the lid (28) being arranged to face the box opening (27a) from above and closing the box opening (27a). The lid body (31) includes a lid body (31) and a hinge (32) that rotatably supports the lid body (31) about a hinge shaft (33) facing in the left-right direction. The box opening (27a) is rotated to move the front end side upward from the closed state in which the box opening (27a) is closed, and the box opening (27a) is opened in the open state. A hinge arm (34) extending between the lid body (31) and the hinge shaft (33) is provided, and when the lid body (31) is in the closed state, the hinge arm (34) is connected to the leg shield ( 16), and as the lid main body (31) opens, the hinge arm (34) extends out of the leg shield (16) from an insertion/removal opening (18e) formed in the leg shield (16). extends below the box opening (27a) to support the lid main body (31) below the box opening (27a) when the lid main body (31) is in the open state; The lid main body (31) provides an inner box structure that is arranged along the rear wall (11b1) of the leg shield (16) when in the open state.

According to this configuration, when the lid is in the open state, the lid main body is supported below the box opening by the hinge arm extending downward. This allows the lid body to be retracted from the space above the box opening as much as possible. Therefore, long items such as plastic bottles that exceed the depth of the box body can be easily taken in and out of the box body. Further, when the lid is in the open state, the lid main body is arranged along the wall of the leg shield. Therefore, a distance between the lid in the open state and the occupant's legs is ensured. Therefore, even with the lid open and a long article stored in the inner box, it is possible to drive the vehicle while ensuring leg space for the occupant. Therefore, the convenience of the inner box and thus the vehicle can be improved.

A second aspect of the present invention is that in the first aspect, the lid main body (31) in the open state has a lower portion that is more than half of the vertical width located below the box opening (27a). .
According to this configuration, when the lid body is in the open state, the lower half or more of the lid body is disposed below the box opening. This makes the space above the box opening wider, making it easier to take long articles in and out of the inner box. Therefore, the convenience of the inner box and thus the vehicle can be further improved.

In a third aspect of the present invention, in the first or second aspect, the hinge arm (34) extends from the base end (34a) supported by the hinge shaft (33) to the hinge shaft (33). an arm base (34b) extending outward in the radial direction of the center; and an arm extending from the extending tip of the arm base (34b) in the circumferential direction of the center of the hinge shaft (33) toward the side that opens the lid body (31). a curved portion (34c), the arm curved portion (34c) extends outside the leg shield (16) when the lid (28) is in the open state, and extends from the box opening (27a). It also extends downward.
According to this configuration, when opening the lid body, the arm curved portion extending in the circumferential direction around the hinge axis extends outside the leg shield, and moves the lid body below the box opening. This allows the lid main body to be rotated and moved downward without enlarging the insertion/removal opening for the hinge arm in the leg shield. Therefore, it is possible to suppress the enlargement of the insertion/removal opening, improve the appearance, and improve the convenience of the inner box and, in turn, the vehicle.

A fourth aspect of the present invention is that in the third aspect, the hinge arm (34) has a height that projects upwardly from the box opening (27a) when the lid (28) is in the open state. The width (T1) is smaller than the radial width (H2) at the center of the hinge shaft (33) in the arm curved portion (34c).
According to this configuration, when the lid is opened, the amount by which the hinge arm protrudes above the box opening can be suppressed. Thereby, it is possible to suppress the amount of overhang of the hinge arm into the space above the box opening, and to further improve the convenience of the inner box and, in turn, the vehicle.

A fifth aspect of the present invention is that in any one of the first to fourth aspects, when the lid (28) in the closed state is viewed from the axial direction of the hinge shaft (33), The side edge (34b1) of the hinge arm (34) on the side that approaches the rear wall (27b) of the box body (27) when opening the lid body (31), and the rear wall (27b ) of the box body (27). The angle (θ1) formed by the rear edge (27b1) of the box along the line 27b) is an obtuse angle.
According to this configuration, the angle between the side edge of the hinge arm that approaches the rear wall of the box body when the lid is opened and the rear edge of the box along the rear wall of the box body is an obtuse angle. The rear wall of the leg shield is disposed close to the rear wall of the box body, and since the angle is obtuse, a large rotation angle is ensured when opening the lid from the closed state. This allows the lid body to be largely retracted from the space above the box opening. Therefore, the convenience of the inner box and thus the vehicle can be further improved.

In a sixth aspect of the present invention, in any one of the first to fifth aspects, the hinge arm (34) is arranged outside the side wall (27c) of the box main body (27), and An arcuate standing wall (45) is formed on the side wall (27c) along the rotation locus of the hinge arm (34) when viewed from the axial direction of the hinge shaft (33), and the standing wall (45) It stands up on the outside of the side wall (27c) beyond the left and right width of the hinge arm (34) and covers the rotation area (R1) of the hinge arm (34).
According to this configuration, by covering the rotation area of the hinge arm with the standing wall, the cable member wired within the leg shield is prevented from entering the rotation area when the lid is opened and closed. Further, even when light from a lamp or the like enters the leg shield, the vertical wall prevents this light from reaching the insertion/removal port of the hinge arm. Therefore, the lid body can be opened and closed smoothly, and the appearance around the hinge arm can be improved.

In a seventh aspect of the present invention, in any one of the first to sixth aspects, a first engaging portion (42) provided on the box main body (27) and a first engaging portion (42) provided on the hinge arm (34) are provided. a second engaging portion (43) that is provided and engages with the first engaging portion (42) to hold the lid (28) in the open state when the lid (28) is in the open state; ).
According to this configuration, the engaging portions provided on each of the box body and the hinge arm constitute a holding mechanism that holds the lid in an open state. This makes it possible to hold the lid in an open state with a simple structure such as providing the box body and the hinge arm with recesses and recesses that engage with each other. Therefore, the convenience of the inner box and, in turn, the vehicle can be easily improved.

An eighth aspect of the present invention is that in the seventh aspect, the second engaging portion (43) provided in the hinge arm (34) is configured with a through hole passing through the hinge arm (34), The hinge arm (34) has a rib (43a) formed so as to surround the second engaging portion (43).
According to this configuration, since the second engaging part provided on the hinge arm is composed of a through hole, it is easier to avoid interference with the box body when opening and closing the lid, compared to a case where the second engaging part is a convex part. Become. Further, by forming a rib on the hinge arm so as to surround the through hole, it is possible to suppress a decrease in strength and rigidity of the hinge arm due to the provision of the through hole.

A ninth aspect of the present invention is that in any one of the first to eighth aspects, the lid body (31) and the box opening (27a) are sandwiched between the lid body and the box opening (27a) to seal the gap therebetween. a seal member (48); and a seal pressure contact portion (47) provided in at least one of the lid main body (31) and the box opening (27a) and in pressure contact with the seal member (48); (33) is disposed at the rear of the box body (27), and the lid body (31) includes a flat part (31a) that faces the box opening (27a) from above in the closed state, and a flat part (31a) that faces the box opening (27a) from above in the closed state. (31a), and a trailing edge curved portion (31b) extending downwardly at the rear of the flat portion (31a), the sealing member (48) and the seal pressure contact portion (47) being vertically disposed relative to each other in the flat portion (31a). They are in pressure contact with each other in the front-rear direction at the trailing edge curved portion (31b).
In a configuration in which the hinge shaft is disposed at the rear of the box body, the entire seal member and the seal pressure contact portion may come into pressure contact in the vertical direction. In this case, the seal member and the seal pressure contact portion may come into sliding contact with each other along the rotation locus of the lid at the rear edge curved portion of the lid body. On the other hand, according to the above configuration, the seal member and the seal pressure contact portion are in pressure contact with each other in the front-rear direction at the rear edge curved portion of the lid body, so that the following effects are achieved. That is, it is possible to suppress the occurrence of unintended deformation of the seal member and maintain good sealing performance.

According to the present invention, it is possible to provide an inner box structure that allows easy running even when the lid of the inner box provided on the passenger side of the leg shield is open.

FIG. 1 is a left side view of a motorcycle in an embodiment of the present invention. FIG. 3 is a left side view of the upper part of the leg shield of the motorcycle. FIG. 3 is a rear view of the vicinity of the leg shield. FIG. 2 is a left side view of the motorcycle with a part of the cover around the inner box removed, showing the lid in an open state. 5 is a view taken along arrow V in FIG. 4. FIG. It is a left side view of the said inner box, and shows a lid open state. It is a right side view of the said inner box, and shows a lid open state. It is a left side view of the said inner box, and shows a lid closed state. It is a right side view of the said inner box, and shows a lid closed state. It is a bottom view of the said lid. It is a perspective view of the sealing member attached to the lower surface of the said lid. 11 is a sectional view taken along line XII-XII in FIG. 10. FIG. FIG. 3 is an exploded rear view of the inner cover of the motorcycle. FIG. 2 is a cross-sectional view of the motorcycle along the left-right center plane of the vehicle around the luggage hook.

Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left, and right in the following description are the same as the directions of the vehicle described below unless otherwise specified. In addition, arrow FR indicating the front of the vehicle, arrow LH indicating the left side of the vehicle, arrow UP indicating the upward direction of the vehicle, and line CL indicating the left-right center of the vehicle body are shown at appropriate locations in the drawings used in the following explanation. Components that are symmetrical with respect to the left-right center line of the vehicle body may be distinguished by adding L and R to the symbols.

<Entire vehicle>
FIG. 1 shows a scooter-type motorcycle 1 as an example of a saddle-ride type vehicle. The motorcycle 1 includes a front wheel 3 that is a steering wheel and a rear wheel 4 that is a driving wheel. The front wheel 3 is supported by a front fork 3a and can be steered by a bar handle 2. The rear wheel 4 is supported by a swing type power unit 8 and can be driven by the power unit 8. In the figure, reference numeral 2a indicates grip portions on both left and right sides of the bar handle 2, reference numeral 2b indicates a handle cover that covers the periphery of the bar handle 2 except for the left and right grip portions 2a, and reference numeral 4b indicates a rear cushion.

Steering system components including the bar handle 2, front forks 3a, and front wheels 3 are supported by a head pipe 21a at the front end of the vehicle body frame 21 so as to be steerable. The front part of the power unit 8 is supported by the lower part of the vehicle body frame 21 so as to be able to swing up and down.
The vehicle body frame 21 includes a head pipe 21a, a down frame 21b extending downward and rearward from the head pipe 21a, a lower frame 21c extending rearward from the lower end of the down frame 21b, and a lower frame 21c extending rearward and upward from the rear end of the lower frame 21c. A rear frame 21d is provided.

A step floor 6 is provided between the front wheels 3 and the rear wheels 4 on which the driver places his feet. A front body 14 is provided in front of the step floor 6. A rear body 15 is provided behind the step floor 6. A space K1 above the step floor 6 between the front body 14 and the rear body 15 is used as a straddling space K1 for the driver to straddle the vehicle body. A handle 2 is arranged above the front body 14. A seat 5 on which a passenger is seated is supported above the rear body 15. A collapsible side stand 7 is provided on the lower left side of the step floor 6 and is capable of supporting the vehicle body in an upright state tilted to the left.

The power unit 8 includes an engine 8a that is an internal combustion engine, and a transmission device (for example, a belt-type continuously variable transmission) 8b that transmits the driving force generated by the engine 8a to the rear wheels 4. The transmission device 8b includes a transmission case 8c that extends rearward from one side (left side) in the vehicle width direction (left-right direction) of the crankcase of the engine 8a. An air cleaner case 9a for the engine intake system is supported above the transmission case 8c.

The periphery of a body frame 21 of the motorcycle 1 is covered with a body cover 11. The vehicle body cover 11 includes a front cover 11a that covers the front part of the vehicle body frame 21 from the front, an inner cover 11b that covers the front part of the vehicle body frame 21 from the rear, a floor cover 11c that covers the lower part of the vehicle body frame 21 from above, and the vehicle body. A rear body cover 11d that covers the rear part of the frame 21 from the front and sides is provided. The front cover 11a and the inner cover 11b form the outer surface of the front body 14. The front cover 11a and the inner cover 11b constitute a leg shield 16 that covers the front of the driver's legs. The upper surface portion of the floor cover 11c constitutes a step floor 6. The rear body cover 11d forms the outer surface of the rear body 15.

Referring to FIGS. 2 and 3, recesses 17 are formed on both left and right sides of the vehicle rear side (occupant side) of the leg shield 16 and have a V-shape that is convex toward the front when viewed from the side of the vehicle. The recessed portion 17 includes a flat upper surface portion 18 facing upward, and an overhang portion 19 extending upward and rearward above the upper surface portion 18.

The upper surface portion 18 is inclined backwardly with respect to a horizontal plane when viewed from the side of the vehicle. The upper surface portion 18 is inclined so that the inner side in the vehicle width direction is located lower when viewed from the rear. The upper surface part 18 includes a linear outer edge 18a extending in the longitudinal direction of the vehicle, a linear rear edge 18b extending in the vehicle width direction, and a front end of the outer edge 18a and an inner side in the vehicle width direction of the rear edge 18b. An arcuate edge portion 18c extends forward and inward in the vehicle width direction in a convex arc shape between the end portion of the vehicle and the end portion of the vehicle. A rear edge curved portion 18b1 is formed on the rear edge portion 18b of the upper surface portion 18. The rear edge curved portion 18b1 curves downward and merges with the rear surface of the rear wall 11b1 of the inner cover 11b (also the rear wall of the leg shield 16).

The overhang portion 19 rises upward and outward in the vehicle width direction from the arcuate edge 18c of the upper surface portion 18 in a concave shape (spherical shape). The overhang portion 19 is provided so as to overlap the upper surface portion 18 when viewed from above. The left overhang portion 19L is formed in a concave shape (spherical shape) concave toward the front and inward in the vehicle width direction. The right overhang portion 19R is formed based on a concave shape that is bilaterally symmetrical to the left overhang portion 19L, but differs in the following points. That is, a pedestal portion 19c is formed to protrude from the center of the right overhang portion 19R. The pedestal portion 19c forms a flat portion facing upward and rearward, and the main switch 29 including an ignition switch 29a and a lock release switch 29b for the seat 5 and the like is arranged in this flat portion.
In the drawing, reference numeral 19a indicates an upper outer edge extending upward from the front end of the outer edge 18a of the upper surface 18 in the overhang 19, and reference numeral 19b indicates the rear edge 18b of the upper surface 18 in the overhang 19 in the vehicle width direction. An upper trailing edge extending upwardly from the inner end is shown.

<Inner box structure>
As shown in FIGS. 3 to 5, an inner box 26 capable of storing articles is provided below the left recess 17L.
The inner box 26 includes a box main body 27 that allows articles to be taken in and taken out from a box opening 27a that opens upwards of the vehicle, and a lid 28 that covers the box opening 27a in an openable and closable manner. The box body 27 is supported inside the leg shield 16 below the upper surface 18L of the recess 17L. The lid 28 is arranged on the upper surface portion 18L of the recessed portion 17L. In FIGS. 2 and 3, the lid 28 in the open state is shown by a chain line.

The lid 28 opens and closes an area including the rear edge curved portion 18b1 of the upper surface portion 18L. A displacement portion 18d that is recessed inside the inner cover 11b is formed on the upper surface portion 18L. The displacement portion 18d aligns the plate-shaped lid main body 31 along the upper surface portion 18L. The displacement portion 18d has a range that aligns with the lid body 31 recessed inside the inner cover 11b with respect to the outer surface of the inner cover 11b. The upper surface portion 18L is one size larger than the box opening 27a when viewed from above. Therefore, a displacement portion 18d is provided around the entire circumference of the box opening 27a. An arm opening 18e into which a hinge arm 34, which will be described later, is inserted and removed is formed inside and outside the box opening 27a in the displacement portion 18d in the vehicle width direction. Hereinafter, the structure on the inner side in the vehicle width direction of the inner box 26 may be distinguished by the symbol U, and the structure on the outer side in the vehicle width direction may be indicated by S.

Referring to FIGS. 6 and 7 together, the lid 28 includes a lid main body 31 and a hinge 32. The lid main body 31 is arranged to face the box opening 27a from above and closes the box opening 27a. The hinge 32 rotatably supports the lid body 31.
The inner box 26 can accommodate items that are taller than the depth of the box body 27 when the lid 28 is opened and the box opening 27a is opened upward. The box opening 27a opens upward below the overhang portion 19L of the recess 17L of the leg shield 16 (inner cover 11b). The recess 17L forms an open space above the box opening 27a.

The lid 28 is opened and closed by a hinge 32 located on the rear side of the vehicle. The hinge 32 supports the lid 28 on at least one of the box body 27 and the leg shield 16 (the box body 27 in the embodiment). A rotation shaft (hinge shaft) 33 of the hinge 32 extending in the left-right direction is located rearward of the center position of the front-rear width of the box opening 27a. The hinge shaft 33 is close to the rear wall 27b of the box body 27 in the front-back direction. The hinge shaft 33 is located forward of the rear wall 27b of the box body 27. The hinge shaft 33 is located below the box opening 27a (the upper end of the box body 27).

When the lid 28 is disposed along the upper surface portion 18L, the box opening 27a is completely closed (see FIGS. 8 and 9). This state is defined as the closed state (fully closed state) of the lid 28. Further, the position of the lid 28 in the closed state is defined as the closed position.
The lid 28 is rotated so that the front end side (hereinafter referred to as the tip 28a side) in the closed state is moved upward and rearward to open the box opening 27a. When opening the box opening 27a, the lid 28 rotates so that the rear end side (hereinafter referred to as the base end 28b side) of the closed state is moved downward and rearward. When the box opening 27a is fully opened (see FIGS. 6 and 7), the lid 28 has its distal end 28a located above the box opening 27a, and its proximal end 28b located below and hinged relative to the box opening 27a. It is arranged below the axis 33. The position of the lid 28 at this time is defined as the open position. The state in which the lid 28 fully opens the box opening 27a is referred to as the open state (fully open state) of the lid 28.

Referring to FIG. 4, the lid 28 in the open state has a center position 28c of the vertical width H1 located below the box opening 27a. The lid 28 in the open state has a center position 28c of the vertical width H1 located below the upper surface portion 18L in which the box opening 27a of the leg shield 16 is arranged. More than half of the vertical width H1 of the lid 28 in the open state is arranged below the box opening 27a (or the upper surface portion 18L). In the lid 28 in the open state, the lower portion that has moved downward from the box opening 27a (or the upper surface portion 18L) is arranged along the rear wall 11b1 of the inner cover 11b. Thereby, in the lid 28 in the open state, the amount of overhanging rearward from the rear wall 11b1 of the inner cover 11b is suppressed.

The hinge 32 has a hinge arm 34 connected to the back side (lower side in the closed state) of the lid main body 31. The hinge arms 34 are provided in pairs on the inside and outside of the box body 27 in the vehicle width direction. The hinge arm 34 has a bent shape when viewed from the side of the box (viewed in the direction of the hinge axis), and extends from the hinge axis 33 to the back side of the lid main body 31. The hinge arm 34 has a forwardly curved shape when the lid 28 is closed, and has an upwardly curved shape when the lid 28 is open. When the lid 28 is in the closed state, the hinge arm 34 fits into the inner cover 11b through the arm opening 18e of the displacement portion 18d. When the lid 28 is opened, the hinge arm 34 extends outside the inner cover 11b from the arm opening 18e of the displacement portion 18d, and places the lid 28 in the open position.

The hinge arm 34 includes an arm base portion 34b and an arm curved portion 34c. The arm base 34b extends from the base end 34a supported by the hinge shaft 33 to the outside (outer circumferential side) in the radial direction of the center of the hinge shaft 33. The arm curved portion 34c extends from the extending tip of the arm base 34b in the circumferential direction around the hinge shaft 33 in the opening direction of the lid body 31. The hinge arm 34 has a plate shape with the thickness direction being in the left-right direction. Reference numeral H2 in FIG. 4 indicates the radial width of the arm curved portion 34c in a side view of the box. The arm curved portion 34c extends with a substantially constant width in the radial direction.

When the lid 28 is in the closed state, the arm base 34b extends forward and downward from the base end 34a. The arm base portion 34b extends substantially vertically upward from the base end portion 34a when the lid 28 is in the open state. The arm base 34b is rotatably supported by the inner and outer side walls 27c of the box body 27 in the left-right width direction (box width direction) via hinge shafts 33, respectively. The hinge shaft 33 includes, for example, a screw 33a screwed into both side walls 27c of the box body 27 from the outside in the box width direction. The hinge shaft 33 may be formed integrally with the side wall 27c of the box body 27 or the hinge arm 34, for example.

The arm base portion 34b extends radially outward from the base end portion 34a to widen toward the end when viewed from the side of the box. The arm base 34b has a fan shape when viewed from the side of the box. In the figure, 34b1 is the first side edge of the arm base 34b on the lid body 31 side when viewed from the side of the box, 34b2 is the second side edge of the arm base 34b opposite to the lid body 31 when seen from the side of the box, and 34b3 is the box The bisectors of the included angle between the side edges 34b1 and 34b2 (reference lines along the extending direction of the arm base 34b) are shown, respectively.

Here, with reference to FIGS. 8 and 9, in a box side view of the lid 28 in the closed state, the first side edge 34b1 of the arm base 34b and the box rear end edge 27b1 along the rear wall 27b of the box body 27. Let θ1 be the angle formed by . This angle θ1 is an obtuse angle. A rear wall 11b1 of the leg shield 16 is arranged behind the rear wall 27b of the box body 27. Therefore, the rotation of the arm base 34b that approaches the rear wall 27b of the box body 27 (and thus the rear wall 11b1 of the leg shield 16) when the lid is opened is restricted. That is, it is difficult for the arm base 34b to move backward beyond the rear wall 27b of the box body 27. On the other hand, since the angle θ1 is an obtuse angle, a large rotation angle can be ensured when opening the lid 28 from the closed state. The angle θ1 is an angle formed by the first side edge 34b1 of the arm base 34b and the box rear edge 27b1 along the rear wall 27b of the box body 27. The first side edge 34b1 is the side edge of the hinge arm 34 of the lid 28 in the closed state that approaches the rear wall 27b of the box body 27 when the lid is opened.

The arm curved portion 34c extends in an arc shape from the distal end of the arm base 34b toward the back surface of the base end 28b of the lid body 31 when viewed from the side of the box. The arm curved portion 34c forms an inner edge 34c1 and an outer edge 34c2. The inner edge 34c1 bends and extends from the tip side of the first side edge 34b1 of the arm base 34b toward the lid main body 31 side. The outer edge 34c2 extends from the tip edge 34b4 of the arm base 34b toward the lid main body 31 so as to extend this tip edge 34b4. The tip edge 34b4 of the arm base 34b and the outer edge 34c2 of the arm curved portion 34c are continuous in an arc shape when viewed from the side of the box. The tip edge 34b4 of the arm base 34b is also an extension of the outer edge 34c2 of the arm curved portion 34c. The bending portion between the second side edge 34b2 and the tip edge 34b4 of the arm base 34b (the bending portion between the arm base 34b and the arm curved portion 34c) is indicated by 34d. The arm curved portion 34c extends so as to form an acute angle with respect to the arm base 34b when viewed from the side of the box and fold back toward the hinge shaft 33 side.
A fan-shaped notch 34e is formed between the inner edge 34c1 of the arm curved portion 34 and the first side edge 34b1 of the arm base 34b when viewed from the side of the box. This notch 34e allows the hinge arm 34 to avoid the box body 27 and the inner cover 11b when the lid 28 is in the open state.

The hinge arm 34 is housed within the leg shield 16 when the lid 28 is in the closed state. At this time, the hinge arm 34 is disposed on the outside of the side wall 27c of the box body 27 in the box width direction. When the lid 28 is in the open state, the hinge arm 34 extends the arm curved portion 34c from the arm opening 18e to the outside of the leg shield 16, and moves the lid body 31 to the open position. When the lid 28 is in the open state, the hinge arm 34 extends the arm curved portion 34c below the box opening 27a, and moves the lid body 31 below the box opening 27a. In the lid open state, a height T1 (see FIG. 7) of the hinge arm 34 that projects upward from the box opening 27a is kept smaller than a radial width H2 (see FIG. 4) of the arm curved portion 34c. Although FIGS. 4 and 7 show the radial width H2 and protrusion height T1 of the hinge arm 34S on the outside in the vehicle width direction, the relationship between the radial width and the protrusion height of the hinge arm 34U on the inside in the vehicle width direction is also shown. The same is true.

A holding mechanism 41 for holding the lid 28 in the open position is configured between the side wall 27c of the box body 27 and the arm base 34b. The holding mechanism 41 includes a convex portion (for example, a truncated conical protrusion) 42 and a concave portion (for example, a round hole portion) 43. The convex portion 42 is provided on one of the box body 27 and the hinge arm 34 (the box body 27 in the embodiment). The recess 43 is provided in the box body 27 and the other of the hinge arm 34 (hinge arm 34 in the embodiment). The convex portion 42 provided on the box body 27 protrudes outward in the box width direction (that is, toward the hinge arm 34 side). The convex portion 42 fits into and engages with the concave portion 43 when the convex portion 42 is placed in a position where the concave portion 43 provided on the hinge arm 34 overlaps when viewed in the direction of the hinge axis. The convex portion 42 and the concave portion 43 are arranged so as to engage with each other when the lid 28 is open.

The hinge arm 34 is elastically deformed in the hinge axis direction (thickness direction of the hinge arm 34) around the bent portion 34d with respect to the base end 34a supported by the hinge shaft 33 and the distal end 34f supporting the lid main body 31. possible. The bent portion 34d is spaced apart from the base end 34a and the distal end 34f.
The engagement element (arm side engagement element, recess 43) on the side of the hinge arm 34 in the holding mechanism 41 is located at the following position. That is, the arm-side engaging element is in an extended position assuming that the outer peripheral side region 34e1 of the fan-shaped notch 34e (region along the inner edge 34c1 of the arm curved portion 34c) is extended in the circumferential direction. Further, the arm-side engaging element is located close to the first side edge 34b1 on the notch 34e side of the arm base 34b.

The engagement element (box side engagement element, convex portion 42) on the side of the box body 27 in the holding mechanism 41 is in the following position when the lid 28 is in the closed state. That is, the box-side engaging element is located within the region 34e1 on the outer peripheral side of the notch 34e, and at a position spaced apart from the arm-side engaging element. The box-side engaging element (convex portion 42) is located within the region 34e1 on the outer peripheral side of the notch 34e while the lid 28 rotates from the closed position to just before the open position. This prevents the convex portion 42, which is the box-side engaging element, from interfering with the hinge arm 34.

The box-side engaging element (convex portion 42) inputs a force in the opening direction to the lid 28 when rotating the lid 28 from just before the open position to the open position. As a result, the box-side engaging element rides around the first side edge 34b1 on the notch 34e side of the arm base 34b in the hinge axis direction. At this time, the periphery of the bent portion 34d is elastically deformed in the hinge axis direction, and the periphery of the first side edge 34b1 on the notch 34e side of the arm base 34b climbs over the convex portion 42. Thereafter, when the box side engaging element (convex part 42) and the arm side engaging element (concave part 43) are arranged in a position where they overlap in the hinge axis direction, they engage with each other and the lid 28 is placed in the open position. It becomes possible to hold it.

When closing the lid 28, by inputting a force in the closing direction to the lid 28, the periphery of the first side edge 34b1 on the notch 34e side of the arm base 34b rides on the convex portion 42 in the hinge axis direction. At this time, the periphery of the bent portion 34d is elastically deformed in the hinge axis direction, and the periphery of the first side edge 34b1 on the notch 34e side of the arm base 34b climbs over the convex portion 42. After that, when the outer peripheral side region 34e1 of the notch 34e is arranged on the outside of the box side engagement element (convex part 42) in the box width direction, the lid 28 can be closed without the convex part 42 interfering with the hinge arm 34. It can be rotated to any position.

By making the box-side engaging element the protrusion 42, the hinge arm 34 can avoid the protrusion 42 when the lid 28 is opened and closed. The hinge arm 34 can avoid the protrusion 42 by using a cutout 34e for avoiding the box body 27 and the inner cover 11b. If the arm-side engaging element is a convex portion, there is a possibility that this convex portion may interfere with the side wall 27c of the box body 27 when the lid 28 is opened or closed. By providing the recess 43 in the hinge arm 34, interference between components around the hinge arm 34 can be suppressed. The recess 43 is not limited to a through hole, and may be a recess with a bottom. In order to suppress a decrease in strength and rigidity of the hinge arm 34 due to the provision of the recess 43 (through hole), a plurality of ribs 43a are formed in the hinge arm 34 so as to surround the periphery of the recess 43.

Referring to FIG. 5, the arm opening 18e in the inner cover 11b through which the hinge arm 34 is inserted is formed in the shape of a slit that is wider than the thickness of the hinge arm 34 in the hinge axis direction. For this reason, there is a possibility that the inside of the leg shield 16 may be seen or the light of the lamp disposed on the front cover 11a may leak through the gap formed around the hinge arm 34 in the arm opening 18e. Furthermore, a plurality of cable-like members such as cables and harnesses are routed within the leg shield 16, and there is a risk that these cable-like members may be caught between the hinge arm 34 and the box body 27 when the lid 28 is opened and closed. be.
For this reason, as shown in FIGS. 7 and 9, the side wall 27cU of the box body 27 on the inside in the vehicle width direction is provided with a standing wall 45 that stands up toward the inside in the vehicle width direction.

The vertical wall 45 has an arcuate shape along the rotation locus of the hinge arm 34, and covers the rotation region R1 of the hinge arm 34 from its outer circumferential side. The standing wall 45 stands up to at least the inner side edge of the arm opening 18e in the vehicle width direction. Even if light enters into the leg shield 16, this standing wall 45 blocks the light and prevents it from reaching the arm opening 18e. Further, the standing wall 45 prevents the cable member in the leg shield 16 from entering the rotation region R1 of the hinge arm 34.

Note that the outer side wall 27cS of the box body 27 in the vehicle width direction is close to the outer end of the leg shield 16 in the vehicle width direction. Therefore, the cable-like member is not routed near the side wall 27cS on the outside in the vehicle width direction of the box body 27, and light does not easily enter. Therefore, the vertical wall 45 is not provided on the outer side wall 27cS of the box body 27 in the vehicle width direction.

From the lower end of the vertical wall 45, an inclined wall 45a extends linearly upward toward the rotation shaft 33. The inclined wall 45a is provided along the second side edge 34b2 of the hinge arm 34 of the lid 28 in the closed state. When the lid 28 is in the closed state, the second side edge 34b2 of the hinge arm 34 comes into contact with the inclined wall 45a. The inclined wall 45a functions as a stopper that defines the closed position of the lid 28.

Referring to FIG. 5, the displacement portion 18d formed on the left upper surface portion 18L is formed up to the rear edge curved portion 18b1 of the upper surface portion 18L. The periphery of the box opening 27a faces the displacement portion 18d. The periphery of the box opening 27a is constituted by a flange upper end 47 of the box body 27 that stands upward. A seal member 48 (see FIG. 10) held on the back side of the lid main body 31 can be elastically contacted (press-contacted) with the flange upper end 47 over the entire circumference. The sealing member 48 comes into elastic contact with the box opening 27a over the entire circumference when the lid 28 is in the closed state.
Thereby, the inner box 26 is sealed when the lid 28 is in the closed state.

Referring to FIGS. 10 to 12, the sealing member 48 comes into elastic contact with the flange upper end 47 of the box body 27 from above in a region along the upwardly facing flat portion of the upper surface portion 18L. The sealing member 48 comes into elastic contact with the flange upper end 47 of the box body 27 from the rear in a region along the rear edge curved portion 18b1 of the upper surface portion 18L.
Here, the lid main body 31 is formed along each of the aforementioned regions. Hereinafter, a portion of the lid body 31 corresponding to the former region will be referred to as a flat portion 31a, and a portion of the lid body 31 corresponding to the latter region will be referred to as a rear end curved portion 31b.

Since the rear end portion (rear edge curved portion 31b) of the lid main body 31 has a small distance (rotation radius) from the hinge shaft 33, it is difficult to project rearward (towards the passenger) when the lid 28 is opened or closed. On the other hand, the rear end portion of the lid main body 31 may slide into contact with the rear portion 48a of the seal member 48 along the rotation locus of the lid 28 with respect to the flange upper end 47 immediately before the lid 28 is in the closed position. In this case, unintended twisting or the like may occur in the rear portion 48a of the seal member 48.
In contrast, in the rear end portion of the lid main body 31 of the embodiment, the rear portion 48a of the seal member 48 is configured to come into elastic contact with the flange upper end 47 of the box main body 27 not from above but from the rear. The rear portion 48a of the seal member 48 is curved along the rear end curved portion 31b of the lid main body 31, so that it can easily come into contact with the flange upper end 47 from the rear. This suppresses unintended deformation of the seal member 48 at the rear end portion of the lid main body 31 and improves the sealing performance of the box opening 27a.

Referring to FIG. 13, the inner cover 11b is divided into an upper cover 51 forming an upper part and a lower cover 52 forming a lower part. The lower portion of the upper cover 51 is formed so as to cut out a triangular region in rear view including the lower portion of the down frame 21b. The lower cover 52 is formed to match the cutout area at the bottom of the upper cover 51. Since the lower cover 52 is located in a position where it is easy for the occupant's legs to hit, the lower cover 52 is not painted, but is an unpainted part made of a colored resin material (spring-dyed resin). This makes the damage caused by the foot hitting the lower cover 52 less noticeable.
On the other hand, the upper cover 51 and the lid 28, which are close to the passenger's line of sight, are painted parts. In addition to the lid 28, a main switch 29 and a load hook 53 are arranged on the upper cover 51 (see FIG. 3). The upper cover 51 has a window (opening) 51a at a location where the load hook 53 is arranged.

Referring to FIG. 14, a hook mount portion 52a integrally formed with the upper end portion of the lower cover 52 is disposed within the window portion 51a. The hook mount portion 52a has a bulging shape that projects rearward from the window portion 51a of the inner cover 11b. The base portion 53a of the load hook 53 is fitted and fixed in the center of the hook mount portion 52a.
The tip of a stay 54 fixed to the down frame 21b is located in front of the hook mount portion 52a (inside the leg shield 16). A base 53a of the load hook 53 is fastened to the stay 54 by a bolt 53b screwed from behind, thereby fixing and supporting the load hook 53. The stay 54 not only fixes the load hook 53 but also holds a cable member 55 routed within the leg shield 16.

The cargo hook 53 is surrounded by a hook mount part 52a of an unpainted lower cover 52, and the hook mount part 52a is made to protrude rearward (towards the passenger) from the outer surface (painted surface) of the upper cover 51. Thereby, even if the periphery of the load hook 53 is damaged by the cargo hung on the load hook 53, the damage is not noticeable. Further, the luggage hung on the luggage hook 53 is also prevented from damaging the outer surface (painted surface) of the upper cover 51.

As explained above, the inner box structure in the above embodiment includes a box main body 27 that is supported on the vehicle rear side of the leg shield 16 of the motorcycle 1 and has a box opening 27a that opens upward, and that the box opening 27a can be opened and closed. a lid 28 that can cover the box opening 27a from above, and a lid main body 31 that is arranged to face the box opening 27a from above and close the box opening 27a, and a hinge shaft 33 that faces in the left-right direction. and a hinge 32 that rotatably supports the lid main body 31, and the lid main body 31 rotates so as to move the front end side upward from the closed state in which the box opening 27a is closed. The box opening 27a is in an open state, and the hinge 32 includes a hinge arm 34 extending between the lid main body 31 and the hinge shaft 33. When in this state, the lid body 31 is fitted into the leg shield 16, and as the lid body 31 opens, it extends out of the leg shield 16 from the insertion/removal opening (arm opening 18e) formed in the leg shield 16, and the hinge When the lid 28 is in the open state, the arm 34 extends below the box opening 27a and supports the lid main body 31 below the box opening 27a. When in this state, it is arranged along the rear wall 11b1 of the leg shield 16.

According to this configuration, when the lid 28 is in the open state, the lid main body 31 is supported below the box opening 27a by the hinge arm 34 extending downward. This makes it possible to retreat the lid body 31 from the space above the box opening 27a as much as possible. Therefore, long articles such as plastic bottles that exceed the depth of the box body 27 can be easily taken in and out of the box body 27. Further, when the lid 28 is in the open state, the lid main body 31 is arranged along the rear wall 11b1 of the leg shield 16. Therefore, a distance between the lid 28 in the open state and the occupant's legs is ensured. Therefore, even if the lid 28 is left open and long items are stored in the inner box 26, it is possible to drive the vehicle while ensuring leg space for the occupant. Therefore, the convenience of the inner box 26 and, in turn, the vehicle can be improved.

In the inner box structure, the lid main body 31 in the open state has a lower portion that is more than half of the vertical width H1 located below the box opening 27a.
According to this configuration, when the lid body 31 is in the open state, the lower half or more of the lid body 31 is disposed below the box opening 27a. This makes the space above the box opening 27a wider, making it easier to take long articles in and out of the inner box 26. Therefore, the convenience of the inner box 26 and, in turn, the vehicle can be further improved.

In the inner box structure, the hinge arm 34 includes an arm base 34b extending radially outward from the center of the hinge shaft 33 from a base end 34a supported by the hinge shaft 33, and an extending tip of the arm base 34b. an arm curved part 34c extending from the side in the circumferential direction around the center of the hinge shaft 33 toward the opening side of the lid main body 31, and the arm curved part 34c is configured to close the leg shield when the lid 28 is in the open state. 16 and extends below the box opening 27a.
According to this configuration, when the lid body 31 is opened, the arm curved portion 34c extending in the circumferential direction around the hinge shaft 33 extends outside the leg shield 16, and moves the lid body 31 below the box opening 27a. This allows the lid main body 31 to be rotated and moved downward without enlarging the insertion/removal opening (arm opening 18e) for the hinge arm 34 in the leg shield 16. Therefore, the expansion of the insertion/removal port can be suppressed to improve the appearance, and the convenience of the inner box 26 and, in turn, the vehicle can be improved.

In the inner box structure, when the lid 28 is in the open state, the hinge arm 34 has a height T1 that projects upward from the box opening 27a, which is at the center of the hinge shaft 33 at the arm curved portion 34c. It is smaller than the radial width H2.
According to this configuration, when the lid 28 is opened, the amount by which the hinge arm 34 protrudes upward from the box opening 27a is suppressed. Thereby, the amount of overhang of the hinge arm 34 into the space above the box opening 27a can be suppressed, and the convenience of the inner box 26 and, in turn, the vehicle can be further improved.

In the inner box structure, when the lid 28 in the closed state is viewed from the axial direction of the hinge shaft 33, when opening the lid main body 31 on the hinge arm 34 (arm base 34b), the box main body 27 The angle θ1 formed by the first side edge 34b1 on the side approaching the rear wall 27b and the box rear end edge 27b1 along the rear wall 27b is an obtuse angle.
According to this configuration, the angle formed by the first side edge 34b1 of the hinge arm 34 on the side approaching the rear wall 27b of the box body 27 when the lid is opened and the box rear end edge 27b1 along the rear wall 27b of the box body 27 θ1 is assumed to be an obtuse angle. The rear wall 11b1 of the leg shield 16 is disposed close to the rear wall 27b of the box body 27, and since the angle θ1 is an obtuse angle, a large rotation angle is ensured when opening the lid 28 from the closed state. . This allows the lid body 31 to be largely retracted from the space above the box opening 27a. Therefore, the convenience of the inner box 26 and, in turn, the vehicle can be further improved.

In the inner box structure, the hinge arm 34 is disposed on the outside of the side wall 27c of the box main body 27, and the side wall 27c (the inner side wall 27cU in the vehicle width direction) has a An arcuate standing wall 45 is formed along the rotation locus of the hinge arm 34, and the standing wall 45 stands up to the outside of the side wall 27c beyond the left and right width of the hinge arm 34, and extends along the rotation locus of the hinge arm 34. Covers the dynamic region R1.
According to this configuration, by covering the rotation area R1 of the hinge arm 34 with the standing wall 45, it is suppressed that the cable member wired within the leg shield 16 enters the rotation area R1 when the lid 28 is opened and closed. be done. Further, even when light from a lamp or the like enters into the leg shield 16, the standing wall 45 prevents this light from reaching the insertion/removal opening of the hinge arm 34. Therefore, the lid main body 31 can be opened and closed smoothly, and the appearance around the hinge arm 34 can be improved.

In the inner box structure, the first engaging portion (convex portion 42) provided on the box body 27 and the first engaging portion provided on the hinge arm 34 when the lid 28 is in the open state. and a second engaging portion (recess 43) that engages with and holds the lid 28 in the open state.
According to this configuration, the engaging portions provided on each of the box body 27 and the hinge arm 34 constitute a holding mechanism 41 that holds the lid 28 in an open state. As a result, the lid 28 can be held in an open state with a simple structure such as providing the box body 27 and the hinge arm 34 with recesses and recesses that engage with each other. Therefore, the convenience of the inner box 26 and, in turn, the vehicle can be easily improved.

In the above inner box structure, the second engaging part (recess 43) provided in the hinge arm 34 is constituted by a through hole passing through the hinge arm 34, and the hinge arm 34 A rib 43a is formed to surround it.
According to this configuration, since the second engaging part provided on the hinge arm 34 is configured as a through hole, interference with the box body 27 is reduced when the lid is opened and closed, compared to a case where the second engaging part is a convex part. Easier to avoid. Further, by forming the rib 43a on the hinge arm 34 so as to surround the through hole, it is possible to suppress a decrease in strength and rigidity of the hinge arm 34 due to the provision of the through hole.

In the inner box structure, a sealing member 48 is provided between the lid main body 31 and the box opening 27a to seal the gap therebetween; a seal press contact portion (flange upper end 47) that presses against the seal member 48, the hinge shaft 33 is disposed at the rear of the box body 27, and the lid body 31 is in the box opening 27a in the closed state. It includes a flat part 31a facing from above, and a trailing edge curved part 31b that curves downward and extends behind the flat part 31a, and the seal member 48 and the seal pressure contact part are vertically opposite to each other in the flat part 31a. The rear edge curved portions 31b are pressed against each other in the front-rear direction.
In a configuration in which the hinge shaft 33 is disposed at the rear of the box body 27, the seal member 48 and the entire seal pressure contact portion may come into pressure contact in the vertical direction. In this case, the seal member 48 and the seal pressure contact portion may come into sliding contact with each other along the rotation locus of the lid 28 at the rear edge curved portion 31b of the lid body 31. On the other hand, according to the above configuration, the seal member 48 and the seal pressure contact portion are in pressure contact with each other in the front-rear direction at the rear edge curved portion 31b of the lid main body 31, so that the following effects are achieved. That is, it is possible to suppress the occurrence of unintended deformation of the seal member 48 and maintain good sealing performance.

Note that the present invention is not limited to the above embodiments. For example, the saddle type vehicle includes all vehicles in which the driver rides astride the body of the vehicle, and includes not only motorcycles (including motorized bicycles and scooters) but also three-wheeled vehicles (one front wheel and two rear wheels). It also includes vehicles with two wheels in the front and one wheel in the rear) or vehicles with four wheels. It also includes vehicles that include an electric motor as a prime mover.
The configuration in the embodiment described above is an example of the present invention, and various changes can be made without departing from the gist of the present invention, such as replacing the constituent elements of the embodiment with well-known constituent elements.

1 Motorcycle (saddle type vehicle)
11b Inner cover 11b1 Rear wall 16 Leg shield 17 Recessed portion 18 Top surface portion 18b1 Rear edge curved portion 18e Arm opening (insertion/removal port)
26 Inner box 27 Box body 27a Box opening 27b Rear wall 27b1 Box rear end edge 27c Side wall 28 Lid 31 Lid main body 31a Flat part 31b Rear edge curved part 32 Hinge 33 Hinge shaft 34 Hinge arm 34a Base end part 34b Arm base part 34b1 First side edge (side edge)
34c Arm curved portion 34e1 Region 34f Tip portion 42 Convex portion (first engaging portion)
43 Recessed portion (second engaging portion)
43a Rib 45 Vertical wall 47 Upper end of flange (seal pressure contact part)
48 Seal member 48a Rear part 53a Base H1 Vertical width T1 Projection height H2 Width R1 Rotation area θ1 Angle

Claims (9)

a box main body (27) that is supported on the vehicle rear side of the leg shield (16) of the saddle type vehicle (1) and has a box opening (27a) that opens upward;
a lid (28) that covers the box opening (27a) in an openable and closable manner;
The lid (28) includes a lid main body (31) that is arranged to face the box opening (27a) from above and closes the box opening (27a), and a hinge shaft (33) that faces in the left-right direction. a hinge (32) rotatably supporting the lid body (31),
The lid main body (31) rotates from a closed state in which the box opening (27a) is closed to an open state in which the box opening (27a) is opened by rotating so as to move the front end side upward. ,
The hinge (32) includes a hinge arm (34) spanning between the lid body (31) and the hinge shaft (33),
The hinge arm (34) fits within the leg shield (16) when the lid body (31) is in the closed state, and as the lid body (31) opens, the hinge arm (34) fits into the leg shield (16). Extending out of the leg shield (16) from the formed insertion/removal port (18e),
The hinge arm (34) extends below the box opening (27a) when the lid main body (31) is in the open state, and extends below the box opening (27a) to keep the lid main body (31) above the box opening (27a). support downward;
The lid main body (31) has an inner box structure, and is arranged along the rear wall (11b1) of the leg shield (16) when in the open state. The inner box structure according to claim 1, wherein the lid main body (31) in the open state has a lower portion that is more than half of the vertical width located below the box opening (27a). The hinge arm (34) is
an arm base (34b) extending radially outward from the center of the hinge shaft (33) from a base end (34a) supported by the hinge shaft (33);
an arm curved portion (34c) extending from the extending tip of the arm base (34b) in the circumferential direction of the center of the hinge shaft (33) toward the side where the lid main body (31) is opened;
3. The arm bending portion (34c) extends outside the leg shield (16) and extends below the box opening (27a) when the lid (28) is in the open state. Inner box structure described in . When the lid (28) is in the open state, the hinge arm (34) has a height (T1) at which it projects upwardly from the box opening (27a), such that the hinge arm (34) has a height (T1) that projects upward from the box opening (27a). The inner box structure according to claim 3, wherein the inner box structure is smaller than the radial width (H2) at the center of the shaft (33). When the lid (28) in the closed state is viewed from the axial direction of the hinge shaft (33), when opening the lid body (31) in the hinge arm (34), the rear of the box body (27) The angle (θ1) formed by the side edge (34b1) on the side approaching the wall (27b) and the box rear edge (27b1) along the rear wall (27b ) of the box body (27) is an obtuse angle. , an inner box structure according to any one of claims 1 to 4. The hinge arm (34) is arranged on the outside of the side wall (27c) of the box body (27),
An arc-shaped vertical wall (45) is formed on the side wall (27c) along the rotation locus of the hinge arm (34) when viewed from the axial direction of the hinge shaft (33),
The standing wall (45) stands up to the outside of the side wall (27c) beyond the left-right width of the hinge arm (34), and covers the rotation region (R1) of the hinge arm (34). The inner box structure according to any one of 5 to 5. a first engaging portion (42) provided on the box body (27);
It is provided on the hinge arm (34) and engages with the first engaging portion (42) when the lid (28) is in the open state to hold the lid (28) in the open state. The inner box structure according to any one of claims 1 to 6, comprising a second engaging portion (43). The second engaging portion (43) provided on the hinge arm (34) is configured with a through hole that passes through the hinge arm (34),
The inner box structure according to claim 7, wherein the hinge arm (34) is formed with a rib (43a) so as to surround the second engaging portion (43). a sealing member (48) sandwiched between the lid main body (31) and the box opening (27a) to seal the space therebetween;
a seal pressure contact part (47) provided in at least one of the lid main body (31) and the box opening (27a) and in pressure contact with the seal member (48);
The hinge shaft (33) is arranged at the rear of the box body (27),
The lid main body (31) is
a flat part (31a) facing the box opening (27a) from above in the closed state;
a trailing edge curved portion (31b) that extends downwardly in a curved manner behind the flat portion (31a);
8. The seal member (48) and the seal pressure contact portion (47) are in pressure contact with each other in the vertical direction at the flat portion (31a), and are in pressure contact with each other in the front and rear direction at the trailing edge curved portion (31b). The inner box structure according to any one of the above.

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