JPH11348663A - Lid for under floor box in automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly use an internal packaging surface and a loading surface in response to luggage without any additional work to the luggage space of an automobile. SOLUTION: In this lid of an under-floor box 7 opened to the luggage space of an automobile, an upper lid 4 is connected with a lower lid 1 by means of a folding mechanism, a stacked condition and developed condition are switchable to each other with both the upper and lower lids 4 and 1 left fitted. The lid surface 12 of the upper surface appearing over the floor surface 8 of a luggage space in the stacked condition is formed into the internal packaging surface same as that of the luggage space, and the lid surface 14 of the lower surface appearing over the floor surface 8 of the luggage space at least in a developed condition is formed into a loading surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid for closing an underfloor box opening in a luggage space of a vehicle having a large load capacity such as a station wagon or a one-box car.

[0002]

2. Description of the Related Art For example, in an automobile having a large loading capacity such as a station wagon or a one-box car, a storage box which dives from a floor of a trunk or a luggage space, that is, an underfloor box may be provided. Spare tires are stored in this box, but various other luggage can be stored using the empty space. The box is closed with a lid called lid, the surface of which is similar to the luggage space floor.

[0003] Various types of boxes or lids have conventionally been proposed. For example, Japanese Patent Application Laid-Open No. 9-109777 discloses that a rigid back inner piece is provided inside an exterior material covering a lid body, and a hinge portion is formed by a flap and a back inner piece that constitute a part of the exterior material. And a lid that does not require hinge fittings. In addition,
No. 23376 is a sliding means that supports the first board whose rear part rotates upward and the second board overlapping this first board at a predetermined height horizontally so that the luggage space can be expanded when folding the rear seat Presenting the box attached to. The lid is composed of the first board and the second board. Furthermore, Japanese Patent Publication No. 2-23377 discloses that the lid of Japanese Patent Publication No. 2-23376 can be opened and closed integrally with the first board and the second board, and a part of the first board in a state where the second board is slid. Alternatively, a box is provided in which the whole can be opened and closed.

[0004]

In an automobile having a large loading capacity, such as a station wagon, the back door is often opened and the luggage is pushed deep into the car. However, problems have been pointed out regarding this work. The luggage space floor is usually covered with interior materials such as carpets. Naturally, the interior material is also stretched on the surface of the underfloor box which constitutes a part of the luggage space floor, that is, the surface of the lid. The friction of the interior material on the lid surface prevented the luggage from being pushed from the back door to the back. In addition, the friction caused by the interior material on the surface of the lid may damage the interior material itself when the load is heavy.

In this regard, Japanese Utility Model Publication No. 2-49084,
JP-A-20-20283, JP-A-7-179150 and the like have already proposed solutions to improve the luggage space floor by solving the problem. Japanese Utility Model Publication No. 5-53402 proposes placing a separately manufactured car carrier in the luggage space and using it to load and unload cargo from the back door. However, these are modifications of the luggage space floor itself, and can be applied only to newly manufactured vehicles (Japanese Utility Model No. 2-49084, JP-A-8-20283, JP-A-7-17915).
No. 0), which has the drawback of deteriorating the appearance of the luggage space that can be seen from the outside (actually No. 5-23402).

[0006] Most of all, the above proposals for improvement are based on the idea of removing the underfloor box below the luggage space, and for the thin lid constituting a part of the luggage space floor, another means must be considered. . Therefore, it is easy to load and unload luggage to the luggage space, especially to push the luggage to the back, so that the luggage space itself is not modified and the underfloor box lid is not damaged so As a result, we attempted to develop a lid that facilitates the loading and unloading of luggage from the back door.

[0007]

SUMMARY OF THE INVENTION As a result of the study, what has been developed is a lid of an underfloor box that opens into a luggage space of a vehicle, wherein an upper lid and a lower lid are connected by a folding mechanism. It is possible to mutually transition between the stacked state and the unfolded state while connecting, the upper lid surface that appears on the luggage space floor in the stacked state is the same interior surface as the luggage space, at least on the luggage space floor in the unfolded state It is a lid of an underfloor box in an automobile in which a surface of a lower lid that appears is a loading surface. The lid of the present invention has a two-layer structure in which an outer shape (usually a rectangular shape) is formed by laminating an upper lid and a lower lid having substantially the same shape, in addition to a vehicle integrated product in which the upper lid or the lower lid is connected to the underfloor box, It may be a separate product that is completely separable from and replaceable with the underfloor box.

In the stacked state, the upper lid surface, which is the same as the interior space of the luggage space, is exposed on the luggage space floor surface to unify the appearance of the luggage space floor surface. In the unfolded state, the lower lid is left as it is so as to close the underfloor box, and (1) the upper lid is rotated around one side edge, or (2) the upper lid is moved in parallel with the lower lid. By doing so. In case (1),
In addition to the surface of the lower lid that appears on the floor of the luggage space in the unfolded state, the rear surface of the upper lid that newly appears is also the loading surface. In the unfolded state, (1) rotate the lower lid about one side edge when the upper lid is expanded, or (2) rotate the lower lid about one side edge of the parallel To open the underfloor box. In addition, even in the stacked state, the upper and lower lids can be integrally rotated to open the underfloor box.

As a structure of the above (1), the folding mechanism is a hinge structure, and a row of convex rails is provided on each of the upper surface rear surface and the lower surface surface which appear on the floor surface of the luggage space in the unfolded state, and the upper surface rear surface and the lower surface lid are provided. There is a lid whose surface is the loading surface. In addition to providing a separate hinge fitting and the like, the hinge structure includes a structure in which the upper lid rear surface and the lower lid surface are connected by a continuous flexible surface material, and corresponds to one side edge serving as an axis when the upper lid is deployed. . The row of convex rails may be oriented in the depth direction of the luggage space. This row of convex rails reduces the contact area with the load to be loaded, and reduces the frictional force that is a negative effect of loading and unloading the load.

Specifically, the lower lid comprises a lid body and a ramp, and the ramp constitutes a folding mechanism which is connected to the lid body and the upper lid by a hinge structure, respectively. The ramp portion is inclined between the upper lid rear surface and the lower lid surface to cause continuity, and the upper lid rear surface that appears on the luggage space floor in the unfolded state, the loading surface that continues the ramp surface and the lower lid surface, and There is a lid. In the case of a lid having this ramp portion, it is preferable to provide a row of convex rails over the entire loading surface including the rear surface of the upper surface lid, the ramp surface, and the surface of the lower surface lid. The unfolded state is realized by rotating the upper surface lid about the hinge structure between the ramp portion and the upper surface lid while leaving the lower surface lid as it is to close the underfloor box. In this deployed state, the underfloor box can be opened by rotating the lower lid about the hinge structure between the ramp section and the lid body section as an axis.

Further, as another structure of (1), the upper surface convex stripes arranged on the rear surface of the upper lid appearing on the floor surface of the luggage space in the unfolded state, and the lower surface convex stripes are arranged on the lower lid surface, and A hinge structure is formed by a ridge on which the end is axially attached to each of the ridges and the lower ridge. A lower rail is formed from the lower ridge to a lamp ridge and an upper ridge, and a row of ridges is formed. There is a lid. The row of convex rails in this lid is a stripe surface in which each of the comb-shaped upper and lower surface convex lines is flexibly combined with a lamp convex line,
The upper and lower ridges also function as strength members of the lid.

In the structure of (2), the folding mechanism is a slide mechanism, and this slide mechanism is configured by engaging a link pivotally mounted on the lower lid and a rail of the upper lid, and is parallel to the lower lid. A push handle used for moving and expanding the upper lid and a lifting handle used for lifting the upper lid and the lower lid integrally are provided on substantially the same surface so as to be raised from the upper lid surface, and the push handle is provided on the upper lid. The upper surface lid is engaged with the lower lid in a state of being substantially flush with the surface to prohibit the expansion of the upper lid, and in the raised state, the engagement is released and the upper lid can be expanded, and the lifting handle is interlocked with the raising A lid having a rotating hook, the hook engaged with the lower lid in a raised state, and the upper lid and the lower lid can be lifted integrally as a lid That.

The above-mentioned lid, which uses the folding mechanism as a slide mechanism, is deployed without turning over the upper lid, so that in the deployed state, the upper lid surface serving as the interior surface and the lower lid serving as the loading surface are exposed on the luggage space floor. Will be. The top lid that moves in parallel is a transfer table that moves the loaded luggage to the back, and the push handle reciprocates the top lid on which the luggage is loaded in the depth direction, and the top lid is inadvertently unfolded in a stacked state ( (Translation). The lifting handle rotates the upper and lower lids integrally from the stacked state, and performs operations for opening the underfloor box and connection of the upper and lower lids.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The first example is a lid that constitutes a folding mechanism in which the lower lid 1 includes a lid body 2 and a ramp section 3, and the ramp section 3 is connected to the lid body 2 and the upper lid 4 by a hinge structure 5. FIG.
2 is a perspective view showing the luggage space 6, FIG. 2 is a perspective view of the lid in a stacked state with the underfloor box 7 closed, and FIG. 3 shows a folding mechanism centering on the ramp section 3 in the state of FIG. FIG. 4 is a perspective view of the lid in a state where the upper lid 4 is expanded, FIG. 5 is a side view showing a folding mechanism centered on the ramp unit 3 in the state of FIG.
FIG. 6 is a perspective view showing a state where the lid body 2 is opened after the upper lid 4 is developed, and FIG. 7 is a perspective view showing a state where the upper lid 4 and the lower lid 1 are integrally developed.

In the lid of the first example, the upper surface lid 4, the ramp portion 3, and the lid body 2 are each formed of a rigid member, and the upper surface lid 4 and the ramp portion 3, and the ramp portion 3 and the lid body portion 2, respectively. Hinge structure 5 connected by flexible face material
Is formed. Here, the lower lid 1 includes a ramp portion 3 and a lid main body portion 2. This lid is
, The underfloor box 7 provided in the luggage space 6 of the vehicle is closed, and a part of the luggage space floor 8 is formed. The upper lid surface 9 has the same interior surface as the luggage space floor 8, and the lid realizes a uniform interior with the luggage space floor 8.
In this stacked state, as shown in FIG.
The lid body 2 is integrally laminated with the upper lid 4 as the lower lid 1 to close the underfloor box 7.

The upper lid 4 and the lower lid 1 are provided with a similar long hole upper handle 10 and lower handle 11. Trader 11
Is slightly larger than the handle 10. For this reason, when the fingers are hung only on the upper handle 10 (see FIG. 2) and the fingers are not hung on the lower handle 11 (see FIG. 2), the hinge structure 5 between the upper lid 4 and the ramp portion 3 is pivoted. As shown in FIG. 4, the upper lid 4 can be turned to the deployed state. On the loading surface appearing in this unfolded state, that is, on the upper lid back 12, the ramp part surface 13, and the lid body part surface 14, a row of convex rails 15 aligned in the developing direction of the upper lid 4 is formed. In this unfolded state, as shown in FIG. 5, the ramp portion 3 connects the upper surface lid 4 and the lid body portion 2 at an angle, so that the upper surface lid back surface 12 extends from the lid body portion front surface 14. Is formed, the continuity of which is ensured.
As a result, the load can be placed on the loading surface, and the load can be easily pushed from the ramp portion 3 to the rear surface 12 of the upper lid along the row of convex rails 15 for reducing the frictional force, and can be taken out.

Even when the upper lid 4 is unfolded, as shown in FIG. 6, the lid main body 2 is rotated about a hinge structure 5 connecting the ramp 3 and the lid main body 2 as an axis, and the under floor box 7 is rotated. Can be opened. Further, in a state where the upper lid 4 and the lower lid 1 are stacked, a finger inserted into the lid body 2 with a hand inserted from the upper handle 10 of the upper lid 4 is lifted by a finger, as shown in FIG. The upper lid 4 and the lower lid 1 are integrated,
The underfloor box 7 can also be opened by supporting and rotating the edge of the ramp section 3 on the upper edge of the underfloor box 7.

The second example is a case in which the upper surface convex stripe 16 of the upper lid rear surface 12 is formed.
And a lid rail row 15 formed by connecting the lower projections 18 of the lower lid surface 17 and the ramp projections 19 to each other. 8 is a perspective view of the lid in a stacked state with the underfloor box 7 closed, FIG. 9 is a cross-sectional view showing a folding mechanism including the lamp ridge 19 in the state of FIG. 8, and FIG.
11 is a perspective view of the lid in an unfolded state, FIG. 11 is a sectional view showing the folding mechanism in the state of FIG. 10, and FIG.
FIG. 13 is a perspective view showing a state in which the lower lid 1 is opened after the lower lid 1 is opened, and FIG. 13 is a perspective view showing a state in which the upper lid 4 and the lower lid 1 are integrated.

As shown in FIG. 10, the lid of the second example has an upper ridge 16 on an upper lid rear surface 12 which appears in an expanded state.
Are arranged on the lower lid surface 17 in the form of a comb with the lower ridges 18,
With the structure in which the ends of the lamp ridges 19 are axially attached to the upper and lower ridges 16 and 18, respectively, the lamp ridges 19 constitute a folding mechanism having a hinge structure, and the lower ridges 18, the lamp ridges 19 and the lower ridges. Article 18
Becomes the convex rail row 15. 8 and 9, the upper ridges 16 and the lower ridges 18 are alternately arranged, and the upper and lower lids 4 and 1 are arranged so as to accommodate the lamp ridges 19 therebetween. And the underfloor box 7 is closed as an integral lid. The upper lid surface 9 appearing in a stacked state is an interior surface similar to the luggage space floor 8.

When the finger is placed on only the upper handle 10 (see FIG. 8) of the upper lid 4 and the finger is not placed on the lower handle 11 (see FIG. 8) provided on the lower lid 1, the protrusion 19 is regulated. In the range, as shown in FIG. 10, the upper lid 4 can be turned to the expanded state. In the unfolded state, as shown in FIGS. 10 and 11, the lamp ridge 19 is inclined to connect the lower ridge 18 and the upper ridge 16 to form a continuous ridge rail row 15. The row of convex rails 15 forms a continuous loading surface from the lower lid 1 side to the upper lid 4 side. Thus, after the luggage is placed on the loading surface on the lower lid 1 side, the luggage can be easily pushed into and removed from the loading surface on the upper lid 4 along the row of convex rails 15 for reducing frictional force. .

The lower lid 1 can be freely rotated with respect to the upper lid 4 through the lamp ridge 19 as a medium within a range restricted by the lamp ridge 19. For this reason, as shown in FIG. 12, the lower floor lid 1 can be rotated from the state where the upper lid 4 is expanded, and the under floor box 7 can be opened. In a state where the upper lid 4 and the lower lid 1 are stacked, the lower lid 11 is lifted with the hand inserted from the upper lid 10 in the upper lid 10, so that as shown in FIG. The underfloor box 7 can be opened by integrally rotating the lower lid 1 and the lower lid 1 while supporting the edge of the lower lid 1 on the upper edge of the underfloor box 7.

The third example is a lid that realizes an expanded state by moving the upper lid 4 in parallel with the lower lid 1 by the slide mechanism 20. FIG. 14 is a perspective view of the lid in a stacked state with the underfloor box 7 closed, and FIG.
FIG. 16 is a perspective view showing a part of the slide mechanism 20 in the state of 14, FIG. 16 is a perspective view of the lid in a state where the push handle 21 is raised and the upper lid 4 is moved in parallel, and FIG. 17 is a slide in the state of FIG. A perspective view and a diagram showing a part of the mechanism 20.
18 is a perspective view showing a state in which the push handle 21 is stored after the expansion, FIG. 19 is a perspective view showing a state in which the lower lid 1 is opened after the upper lid 4 is expanded, and FIG.
FIG. 21 is a perspective view showing a state in which the lower lid 1 and the lower lid 1 are unfolded integrally. FIG. 21 is a perspective view showing the lifting handle 22 in the state of FIG.

As shown in FIG. 14, the lid of the third example has a structure in which an upper lid 4 and a lower lid 1 each made of a rigid member are connected by a slide mechanism 20, and the upper lid surface 9 has a luggage space floor surface. 8 and the lower lid surface 17 (FIG. 16 or FIG.
(See Reference) has a loading surface. The slide mechanism 20
As shown in FIG. 15, the rail built into the top lid 4
A link arm 24 rotatably projecting from the lower lid 1 is slidably connected to the lower arm 23. In the stacked state, the link arm 24 is tilted so that the upper lid rear surface 12 is in close contact with the lower lid surface 17 to increase the integrity, and the push handle 21 which is substantially flush with the upper lid surface 9 is connected to the lower lid 1. Engagement (in the third example, an opening of the push handle 21 is fitted to a projection provided on the lower lid surface 17), so that the upper lid 4 does not accidentally shift.

When the pushing handle 21 of the upper lid 4 is raised, the engagement between the pushing handle 21 and the lower lid 1 is released, and as shown in FIG. You can move. At this time, as shown in FIG. 17, the pushing of the upper lid 4 by the pushing handle 21 brings the link arm 24 into a substantially upright state, the upper lid rear surface 9 slightly floats from the lower lid surface 17, and the luggage space floor It translates in a substantially sliding contact state with the surface 8. In this case, a roller or a hemispherical sliding protrusion may be provided on the upper lid rear surface 12 so that the entire surface of the upper lid rear surface 12 does not rub against the luggage space floor surface 8. Further, if the rollers or hemispherical projections are fitted into the corresponding concave portions of the lower lid, it is also useful to prevent the upper lid and the lower lid from being displaced in the laminated state.

As described above, in the third example, the upper lid 4 does not turn over and merely moves in parallel. Only the lower lid surface 17 newly appearing in the unfolded state is the loading surface, and the upper lid surface 9 is the interior. The luggage will be loaded on the surface. However, the feature of this third example is that the luggage can be moved in parallel with the upper lid 4 to the back without rubbing the luggage against the luggage space floor 8. This utility is the top lid 4
The function is to function like a simple trolley, to reduce the labor of the operator when packing and removing the luggage from the back.
After the upper lid 4 is unfolded, as shown in FIG. 18, the push handle 21 is tilted down so as to be substantially flush with the upper lid 4.
It does not get in the way.

Even when the upper lid 4 is unfolded, as shown in FIG. 19, the lower lid 1 is pivoted about the link arm 24 by holding the lower lid 1 trader 11, and the underfloor box 7 is opened. be able to. In this case, it is preferable to allow the link arm 24 to be free to a certain extent even in the deployed state. Further, in a state where the upper lid 4 and the lower lid 1 are stacked, a lifting handle of the upper lid 4 is provided.
20, the upper lid 4 and the lower lid 1 are integrated, and the edge of the lower lid 1 is supported on the upper edge of the underfloor box 7 and rotated as shown in FIG. Box 7 can also be opened.
As shown in FIG. 21, the lifting handle 22 has a hook 25 that rotates in conjunction with the raising, and in the raised state, the hook 25 engages with the pin 26 of the lower lid 1 and the upper lid 4 And the lower lid 1 can be handled integrally.

[0027]

According to the lid of the present invention, the interior surface and the loading surface can be selectively used according to the load without performing any processing on the luggage space of the vehicle. Since the lid itself is given the effect of selectively using the interior surface and the loading surface, not only new cars,
Off-the-shelf vehicles also benefit, and there is no hassle and difficulty in mounting. In addition, in the stacked state, since only the upper lid surface, which is the interior surface, appears on the luggage space floor surface, the appearance of the luggage space can be made uniform, and the appeal for purchasing can be enhanced. .

In the first and second examples, a typical effect is that the row of convex rails spreads the loading surface having a small frictional force widely over the entire floor of the luggage space, thereby helping to load and unload the cargo. . The configuration of the convex rails can be freely set, particularly the direction of the arrangement, according to the specifications of the load or the lid to be loaded. For example, in the case of a row of convex rails extending in the traveling direction of the automobile (see the first and second examples),
It is also possible to produce an additional effect that the function of suppressing the lateral displacement of the luggage loaded on the row of convex rails in the unfolded state can be expected.

In the third example, unlike the first and second examples, it is not necessary to unfold the top lid in advance when loading the luggage, but rather use the upper lid after pushing the luggage. Thus, the effect of mainly reducing and alleviating the labor required for loading and unloading luggage can be cited as a characteristic effect. In this case, the push handle for preventing the displacement of the upper lid in the stacked state has a function of simplifying the parallel movement of the upper lid, and further enhances the value of the lid of the present invention.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a luggage space.

FIG. 2 is a perspective view of the lid of the first example in a stacked state with the underfloor box closed.

FIG. 3 is a side view showing a folding mechanism centered on a ramp in the state of FIG. 2;

FIG. 4 is a perspective view of the lid in a state where an upper lid is developed.

FIG. 5 is a side view showing a folding mechanism centering on a ramp in the state of FIG. 4;

FIG. 6 is a perspective view showing a state where a lid main body is opened after an upper lid is developed.

FIG. 7 is a perspective view showing a state where an upper lid and a lower lid are unfolded integrally.

FIG. 8 is a perspective view of the lid of the second example in a stacked state with the underfloor box closed.

9 is a cross-sectional view illustrating a folding mechanism including a hinge in the state of FIG.

FIG. 10 is a perspective view of the lid in a state where the upper lid is developed.

11 is a sectional view illustrating the folding mechanism in the state of FIG.

FIG. 12 is a perspective view illustrating a state in which the lower lid is opened after the upper lid is developed.

FIG. 13 is a perspective view showing a state where an upper lid and a lower lid are unfolded integrally.

FIG. 14 is a perspective view of the lid of the third example in a stacked state with the underfloor box closed.

FIG. 15 is a perspective view illustrating a part of the slide mechanism in the state of FIG. 14;

FIG. 16 is a perspective view of the lid in a state where the push handle is raised and the upper lid is moved in parallel.

FIG. 17 is a perspective view showing a part of the slide mechanism in the state of FIG. 16;

FIG. 18 is a perspective view showing a state in which the push handle has been stored after being unfolded.

FIG. 19 is a perspective view illustrating a state in which the lower lid is opened after the upper lid is developed.

FIG. 20 is a perspective view illustrating a state where an upper lid and a lower lid are unfolded integrally.

21 is a perspective view showing the lifting handle in the state of FIG. 20.

[Explanation of symbols]

 Reference Signs List 1 lower lid 3 ramp part 4 upper lid 5 hinge structure 7 under floor box 8 luggage space floor 15 convex row of rails

Claims (5)

[Claims] 1. A lid of an underfloor box that opens into a luggage space of an automobile, wherein an upper lid and a lower lid are connected by a folding mechanism, and the upper lid and the lower lid are connected to each other between a stacked state and a deployed state while the upper and lower lids are connected. The upper lid surface that appears on the luggage space floor in the stacked state is an interior surface similar to the luggage space, and at least the lower lid surface that appears on the luggage space floor in the unfolded state is a loading surface. The lid of the underfloor box in an automobile. 2. The folding mechanism has a hinge structure, and a row of convex rails is provided on each of the upper surface of the upper lid and the lower surface of the lower lid which appear on the floor of the luggage space in an expanded state, and the upper surface of the upper lid and the lower surface of the lid are used as loading surfaces. The lid of an underfloor box in an automobile according to claim 1, wherein 3. A folding mechanism in which the lower lid comprises a lid main body and a ramp, and the ramp is connected to the lid main body and the upper lid by a hinge structure. The ramp is inclined between the upper lid back and the lower lid front to ensure continuity,
The underfloor box lid according to claim 1, wherein the rear surface of the upper lid, the ramp surface, and the lower lid surface, which appear on the floor surface of the luggage space in the unfolded state, are continuous loading surfaces. 4. An upper surface ridge is arranged on the back surface of the upper surface lid, and a lower surface ridge is arranged on the lower surface of the lower lid which appears on the floor surface of the luggage space in the unfolded state, and ends are respectively attached to the upper surface ridge and the lower surface ridge. The under structure according to claim 2, wherein the hinge structure is formed by the convex ridges, and a row of convex rails is formed from the lower convex ridge to the lamp convex ridge and the upper convex ridge. The lid of the floor box. 5. A folding mechanism comprising a slide mechanism, wherein the slide mechanism is constituted by engaging a link pivotally mounted on the lower lid and a rail of the upper lid, and moving in parallel from the lower lid to deploy the upper lid. And a lifting handle used for lifting the upper lid and the lower lid together is provided on substantially the same surface so as to be raised from the surface of the upper lid, and the pressing handle is substantially flush with the surface of the upper lid. The lower lid is engaged with the upper lid to prohibit the expansion of the upper lid, and in the raised state, the engagement is released to allow the upper lid to be deployable, and the lifting handle has a hook that rotates in conjunction with the raising. The hook according to claim 1, wherein the hook is engaged with the lower lid in a raised state, so that the upper lid and the lower lid can be integrally lifted. Under floor box lid.