JP6770423B2 - Floor structure - Google Patents

Description

The present invention relates to a floor structure of a building, and more particularly to a floor structure in which a wiring space for OA equipment is provided below the floor surface.

Many buildings, such as office buildings, where multiple OA devices are installed indoors, employ a double-floor structure in which the wiring space for OA devices is provided below the floor surface. A general double-floor structure is a structure in which a floor board supported by support legs is arranged on a floor concrete (concrete slab), and the space between the floor concrete and the floor board is used as a wiring space. Since the floor surface of a room adopting such a double floor structure is inevitably high, a technique for keeping the floor surface height low has been conventionally proposed.

For example, in Japanese Patent Application Laid-Open No. 5-248072 (Patent Document 1), a cable storage groove component is fitted between adjacent floor plates at a position where cables should be embedded, and the cable storage groove component is inserted into the opening of the cable storage groove component. A double floor structure with a lid attached has been proposed.

JP-A-5-248072

As in Patent Document 1, a technique for suppressing the floor height of a room in which a plurality of OA devices are installed (hereinafter referred to as "OA room") to be lower than the floor height of a general double-floor structure has been conventionally proposed. ing. However, if a room with a single floor (hereinafter referred to as "non-OA room") that is not intended to install multiple OA equipment and an OA room with a double floor are adjacent to each other on the same floor, there will be a step on the floor surface between the two rooms. Occurs. In this case, work is required to eliminate the step on the floor surface, which affects the cost and construction period.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a floor structure having a simple structure and capable of eliminating a step with a non-OA room. ..

The floor structure according to an aspect of the present invention is the floor structure of a building, which is arranged at intervals from each other and is placed on a plurality of floor support members extending along a first direction and a plurality of floor support members. It is provided with a floor panel to be provided and a wiring line located below the floor panel and extending along a first direction. The floor panels are spaced apart from each other, with a plurality of joists extending along a second direction intersecting in the first direction, and a first face material and a first face member arranged in parallel with each other and sandwiching the plurality of joists in the vertical direction. Includes two-sided material. The first facing material located above has a removable or openable lid, and the second facing material located below has a facing portion facing the lid. An opening is formed in at least a part of the facing portion to expose the wiring path.

Preferably, at least a portion of the wiring path is composed of wiring receiving materials arranged between adjacent floor support members. It is desirable that the wiring receiving material has an opening extending along the first direction in the portion facing the second surface material.

Alternatively, at least one of the plurality of floor support members is an opening upward floor support member having an opening extending in the first direction at a portion facing the second face material. In this case, at least a part of the wiring line may be composed of the floor support member facing upward in the opening.

When a plurality of wiring paths are provided, the lid portion of the first face material and the facing portion of the second face material may be provided for each wiring path.

Preferably, the lid portion is provided with a through hole for drawing the cable arranged on the second surface material into the room.

Preferably, the floor support member comprises a large pull placed on a bundle erected on the ground or a beam placed between the floors of the building.

In the present invention, the space (wiring space) partitioned by a plurality of joists and the wiring path intersect three-dimensionally with the second face material in between. Further, the wiring space and the wiring path communicate with each other through the opening of the facing portion. Therefore, it is possible to secure a wiring space below the floor surface without forming a double floor using support legs. As a result, according to the present invention, it is possible to eliminate the step difference from the non-OA chamber with a simple structure.

It is a top view of the floor structure which concerns on each embodiment of this invention. It is sectional drawing which shows typically the floor structure which concerns on Embodiment 1 of this invention. It is sectional drawing which shows typically the floor structure which concerns on Embodiment 1 of this invention. FIG. 5 is a plan view schematically showing a part of a floor structure in a state where the lid is removed in the first embodiment of the present invention. It is a figure which shows another example of the position of the opening provided in the facing portion in Embodiment 1 of this invention. It is sectional drawing which shows typically the floor structure which concerns on Embodiment 2 of this invention. It is a perspective view which shows typically the floor structure which concerns on Embodiment 2 of this invention. It is a perspective view which shows typically the floor structure which concerns on Embodiment 3 of this invention.

Embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

<Embodiment 1>
The floor structure of the first floor (ground floor) in the building will be described with reference to FIGS. 1 to 3. FIG. 1 is a plan view of the floor structure 1 according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing the floor structure 1 along the line II-II of FIG. FIG. 3 is a cross-sectional view schematically showing the floor structure 1 along the line III-III of FIG.

With reference to FIGS. 2 and 3, as a basic structure, the floor structure 1 of a building is placed on a plurality of bundles 2 erected on the ground 9 and bundles 2 and arranged at intervals from each other. It includes a plurality of large pulls 3 and a floor panel 4 mounted on the plurality of large pulls 3. The floor panel 4 has a plurality of joists 41 arranged at intervals from each other, and an upper side material (first surface material) 42 and a lower side material (first surface material) 42 arranged in parallel with each other and sandwiching the plurality of joists 41 in the vertical direction. Two-sided material) 43 and is included.

The bundle 2 is a columnar member extending in the vertical direction. The bundle 2 may be made of wood or metal. The large pull 3 is a long member extending in a certain direction (hereinafter referred to as "first direction"). The arrow A1 shown in FIG. 1 and the like indicates the extending direction of the large pull 3, that is, the first direction. The large pull 3 has a rectangular cross section having a long side and a short side, and is formed of, for example, a C-shaped steel having an opening on the long side. The large pull 3 is arranged on a strong axis so that its long side is arranged in the vertical direction.

The joist 41 is a long member extending in a direction orthogonal to the first direction (hereinafter referred to as "second direction"). That is, the joist 41 intersects the Ohiki 3 three-dimensionally. The arrow A2 shown in FIG. 1 and the like indicates the extending direction of the joist 41, that is, the second direction. The joist 41 is made of wood, for example, and has a rectangular cross section. The distance between the joists 41 is smaller than the arrangement pitch of the large pull 3 (P in FIG. 2). The height dimension of the joist 41 is defined between 50 and 105 mm, for example, about 80 mm.

The upper side member 42 faces the interior space 81 and constitutes the floor surface of the first floor. The lower side surface member 43 faces the underfloor space 82 and is arranged in a state of being in surface contact with the upper surface of the large pull 3. The thickness of the lower side surface member 43 may be thinner than the thickness of the upper side surface member 42.

Of the floor structure 1, the bundle 2, the large pull 3, and the joist 41 are members that form the frame of the building together with the beams and columns. In a general single floor structure, the joists are directly stacked on the large pull, but in the present embodiment, the lower side member 43 is interposed between the large pull 3 and the joists 41. .. Therefore, in the present embodiment, the large pull 3 is a floor support member that supports the floor panel 4, and the floor panel 4 includes a joist 41. The floor panel 4 is fixed to the large pull 3.

As shown in FIG. 1, the floor panel 4 is divided into both the first and second directions in a plan view, and the floor panel 4 is configured by laying out a plurality of panel units 40 without gaps. There is. Each panel unit 40 is composed of a plurality of joists 41 having a predetermined length, and a rectangular upper side member 42 and a lower side member 43 cut according to the length of the joists 41. As shown in FIG. 3, in the installed state, the joist 41 located at the end of the panel unit 40 among the plurality of joists 41 comes into contact with the joist 41 located at the end of the adjacent panel unit 40 in the first direction. The panel unit 40 is manufactured at the factory and installed on site.

As described above, since the floor panel 4 includes the lower side member 43, a plurality of wiring spaces 44 partitioned by the plurality of joists 41 are formed between the upper side member 42 and the lower side member 43. To. The wiring space 44 extends along the same second direction as the joist 41. The height dimension of the wiring space 44 is equal to the height dimension of the joist 41.

Here, the floor structure 1 is provided below the floor panel 4 and further includes a wiring path 50 extending along the first direction. Since the wiring space 44 extends in the second direction, the wiring path 50 three-dimensionally intersects the plurality of wiring spaces 44 with the lower side surface member 43 in between.

In the present embodiment, the wiring path 50 is composed of, for example, a long wiring receiving material 5 having a substantially U-shaped cross section. The wiring receiving material 5 is arranged between a pair of adjacent large pulls 3. The wiring receiving material 5 (wiring path 50) extends linearly across a plurality of panel units 40 aligned along the first direction. The wiring receiving material 5 (wiring path 50) may not be provided in each of the plurality of panel units 40 aligned along the second direction, and may be provided in every other one, for example.

The wiring receiving member 5 is made of steel, for example, and is fixed to the lower surface of the lower side surface member 43 of the floor panel 4 so that its opening faces upward. More specifically, the wiring receiving material 5 has a pair of flange portions 51 extending from the upper end edge of the receiving material main body having a substantially U-shaped cross section to both sides, and the flange portions 51 are joining members such as screws. Is fixed to the lower side surface member 43 from below.

As shown in FIG. 1, a part of the upper side member 42 of the floor panel 4 is a removable lid 61. By attaching and detaching the lid 61, the opening (hereinafter referred to as "floor opening") 62 of the upper side member 42 is opened and closed. The shape of the lid 61 is, for example, a rectangular shape. The lid 61 is provided so as to overlap the position of the wiring path 50 when viewed from above. The lid 61 is provided for each wiring path 50 in the second direction. Further, as shown in FIG. 3, a plurality of lids 61 are provided along one wiring path 50.

In the present embodiment, the lid body 61 is detachably provided on the upper side surface member 42, but the lid body 61 may be provided on the upper side surface member 42 so as to be openable and closable. .. The meaning of "openable and closable" includes not only the meaning of being rotatable but also the meaning of being slidable, for example.

The lid 61 is provided, for example, in a corner of the panel unit 40. In this case, the floor opening 62 is formed by cutting out one corner of the upper side member 42 constituting the panel unit 40 in a rectangular shape. The lid 61 may be provided for each panel unit 40, or may be provided only for a part of the panel units 40.

FIG. 4 is a plan view schematically showing a part of the floor structure 1 in a state where the lid 61 is removed. As shown in FIG. 4, when the lid 61 is removed, two joists 41 adjacent to each other in the first direction and a wiring space 44 formed between the joists 41 are exposed from the floor opening 62. .. That is, the two joists 41 and the portion (hereinafter referred to as "face-to-face portion") 71 of the lower side surface member 43 facing the lid 61 are exposed from the floor opening 62.

In this way, the lid 61 is arranged so as to be bridged over two joists 41 adjacent to each other in the first direction. Therefore, in the closed state, both ends of the lid 61 in the first direction are supported from below by these two joists 41. The length dimension of the lid 61 along the second direction is 2/3 or less of the panel unit 40, for example, about 1/2.

As shown in FIG. 4, an opening 72 that exposes the wiring path 50 is formed in a part of the facing portion 71 of the lower side surface member 43. As a result, the wiring space 44 above the lower side surface member 43 and the wiring path 50 communicate with each other through the opening 72. In the present embodiment, since the plurality of wiring paths 50 are provided at intervals from each other, the plurality of wiring paths 50 and the plurality of wiring spaces 44 form a grid-like wiring passage.

In this way, since the opening 72 is provided in a part of the facing portion 71, the wiring direction of the OA cable 8 is set to the first direction at the position of the opening 72, that is, at the intersection of the wiring space 44 and the wiring path 50. Can be changed from the second direction or from the second direction to the first direction.

The work procedure for changing the wiring direction of the OA cable 8 from the first direction to the second direction and pulling the OA cable 8 into the room at a desired position (pull-in position) is as follows, for example. The operator first removes the lid 61 located on a certain wiring path 50. Next, the OA cable 8 arranged along the wiring path 50 is pulled out onto the lower side surface member 43 (facing portion 71), that is, into the wiring space 44 through the opening 72 under the removed lid 61. After that, the pulled out OA cable 8 is sent out to the position of the next lid 61 toward one side or the other side in the second direction along the wiring space 44. The operator removes the next lid 61 and pulls the OA cable 8 into the facing portion 71 under the lid 61.

When the position of the lid 61 is the retracted position, the lid 61 is mounted through the through hole 63 through the OA cable 8. As a result, the OA cable 8 is pulled into the room. The through hole 63 is provided in advance for each lid 61. In this case, since the operator's finger or the like can be inserted into the through hole 63 during the wiring work, the lid 61 can be easily attached and detached. Alternatively, the through hole 63 may be drilled in the field only in the lid 61 located at the position where the OA cable 8 is pulled into the room.

If the position of the "next lid 61" is not the retracted position, the OA cable 8 is sent out along the wiring space 44 to the position of the next lid 61. Alternatively, as shown by an imaginary line in FIG. 1, by inserting the OA cable 8 into the wiring path 50 from the opening 72 under the next lid 61, the wiring direction of the OA cable 8 is changed from the second direction to the first. You may change the direction again.

For pulling out or inserting the OA cable 8 through the opening 72, the size of the opening 72 can be such that a worker's hand or a tool for holding the OA cable 8 can be inserted from the wiring space 44 side. The size is desirable. In the example shown in FIG. 4, the opening size of the opening 72 in the first direction is substantially equal to the distance between the joists 41. It is desirable that the opening dimension L1 in the second direction of the opening 72 is, for example, equal to or larger than the width dimension of the wiring path 50, that is, the opening dimension of the wiring receiving material 5.

On the other hand, it is desirable that the opening dimension L1 of the opening 72 in the second direction is less than the length dimension L2 of the facing portion 71 and the lid 61 in the second direction. That is, when viewed from above with the lid 61 removed, it is desirable that the opening 72 and the portion other than the opening 72 (hereinafter referred to as “plate-shaped portion”) 73 are adjacent to each other in the second direction. .. As a result, not only the OA cable 8 can be pulled out from the opening 72, but also the pulled out OA cable 8 can be temporarily placed on the plate-shaped portion 73 of the facing portion 71, so that wiring along the wiring space 44 can be easily performed. It can be carried out. The opening size of the opening 72 in the first direction may be shorter than the distance between the joists 41.

In the illustrated example, the opening 72 is provided at the center of the facing portion 71 in the second direction. In such a case, when the lid 61 is removed, the plate-shaped portions 73 of the facing portion 71 are exposed on both sides of the opening 72 in the second direction. Therefore, the OA cable 8 pulled out from the opening 72 in both the plate-shaped portion 73 adjacent to the opening 72 on one side in the second direction and the plate-shaped portion 73 adjacent to the opening 72 on the other side in the second direction. Can be temporarily placed. Therefore, the OA cable 8 pulled out from the opening 72 can be easily wired in both directions of one side and the other side in the second direction.

As shown in FIG. 5, in the opening 72, when the lid 61 is removed, the plate-shaped portion 73 of the facing portion 71 is exposed only on either one side of the second direction of the opening 72. You may. For example, the position of one end of the opening 72 in the second direction may be substantially the same as the position of one end of the facing portion 71 in the second direction so that the large pull 3 is exposed from the opening 72. In this case, the OA cable 8 pulled out from the opening 72 can be temporarily placed on the plate-shaped portion 73 on the other end side in the second direction of the opening 72, so that the wiring of the pulled out OA cable to the other side in the second direction is performed. It can be done easily.

As described above, the floor structure 1 according to the present embodiment includes a wiring space 44 and a wiring path 50 that three-dimensionally intersect with each other across the lower side surface member 43, and an opening 72 is provided at the intersection between the two. ing. Therefore, according to the present embodiment, the OA cable 8 can be arranged in both the first direction and the second direction at a position below the floor surface without using a double floor using support legs. .. In addition, wiring workability similar to that in the case of a double floor can be realized.

Further, according to the present embodiment, since the wiring space for OA equipment can be provided under the floor surface without increasing the floor surface height, the OA room and the non-OA room are adjacent to each other on the same floor. Even when they are arranged, the floor surface between the two rooms can be flush with each other. As a result, it is possible to eliminate the work for eliminating the step that may occur when the conventional double floor structure is used. In the non-OA room, the lid 61 may not be provided on the upper side member 42. Further, it is not necessary to provide the opening 72 in the lower side surface member 43.

Further, according to the present embodiment, as compared with a general floor structure of a single floor, it is only necessary to provide the lower side surface member 43 and one or more wiring receiving members 5 attached under the lower side surface member 43. Wiring space can be secured with a simple configuration. Therefore, the cost and construction period can be shortened as compared with the conventional double floor structure.

In the present embodiment, the opening 72 is provided only in a part of the facing portion 71, but it may be provided in the entire facing portion 71.

Further, the wiring receiving member 5 has a U-shaped cross section with the opening facing upward, but is not limited, and extends along the first direction to the portion facing the lower side surface member 43 (). Typically, it may have an opening (which extends from one end to the other in the first direction). Alternatively, the wiring receiving material may be formed by a tubular duct. In this case, the tubular wiring receiving material may have an opening for exposing the wiring path 50 only in the portion of the lower side surface member 43 (facing portion 71) facing the opening 72.

Further, although it was decided that the large pull 3 is formed of C-shaped steel having an opening on the long side, in the present embodiment, the large pull may be formed of a member other than the C-shaped steel. For example, the large pull may be made of a metal member with a closed cross section or may be made of wood.

<Embodiment 2>
The floor structure 1A according to the second embodiment of the present invention will be described with reference to FIGS. 6 and 7. FIG. 6 is a cross-sectional view schematically showing the floor structure 1A, which corresponds to FIG. 2 of the first embodiment. FIG. 7 is a perspective view schematically showing the floor structure 1A.

The basic structure of the floor structure 1A is the same as the floor structure 1 of the first embodiment. Therefore, here, only the differences from the floor structure 1 of the first embodiment will be described in detail.

The floor structure 1A does not include the wiring receiving material 5 shown in the first embodiment, and the wiring path 50 is formed by a large pulling 3 having a C-shaped cross section. Specifically, in the first embodiment, the large pull 3 is arranged on a strong axis, whereas in the present embodiment, the large pull 3 is arranged on a weak axis so that the opening 30 faces upward. That is, the large pull 3 is arranged so that its short side is arranged in the vertical direction.

Each large pull 3 is arranged, for example, at the boundary portion of the panel units 40 adjacent to each other in the second direction. In this case, the large pull 3 supports the other end in the second direction of one panel unit 40 and the one end in the second direction of the other panel unit 40.

In the present embodiment, the opening 30 of the large pull 3 faces the lower side surface member 43 of the floor panel 4, and the lid 61 is provided so as to include the position of the opening 30 of the large pull 3. Further, the opening 72 of the lower side surface member 43 (facing portion 71) is provided at a position where the opening 30 of the large pull 3 is exposed. In the present embodiment, the entire opening width of the large pull 3 is not exposed from the opening 72, but only about half of the opening width is exposed from the opening 72.

In this way, the wiring path 50 can be configured by the large pull 3 by arranging the large pull 3 that constitutes a part of the building frame on a weak axis. That is, as shown in FIG. 7, the OA cable 8 can be passed through the inside of the large pull 3. FIG. 7 shows a state in which the lid 61 of one of the plurality of panel units 40 constituting the floor panel 4 is removed.

As described above, according to the present embodiment, the wiring path 50 along the first direction can be formed without providing a separate member. Since the large pull 3 is provided at a predetermined pitch along the second direction, it is possible to realize various wiring patterns with a simple configuration. In the present embodiment, since the large pull 3 is arranged on the weak axis, the arrangement pitch of the large pull 3 may be shorter than the arrangement pitch in the case of the strong shaft arrangement.

In the present embodiment, the large pull 3 is a C-shaped steel having an opening on the long side, but the present invention is not limited, and any floor support member having an opening upward may be used regardless of the weak axis / strong axis. That is, the large pull may have an opening extending along the first direction in the portion facing the lower side surface member 43.

Further, not all the large pulls 3 need to be floor support members with the opening upward, and at least one large pull 3 may be a floor support member with the opening upward.

<Embodiment 3>
The floor structure 1B according to the third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a perspective view schematically showing the floor structure 1B.

The floor structure 1B according to the present embodiment is a structure in which the floor structure 1A of the second embodiment and the wiring receiving material 5 of the first embodiment are combined. That is, in the present embodiment, each of the plurality of large pulls 3 arranged on the weak axis and at least one wiring receiving material 5 constitutes the wiring path 50. The wiring receiving material 5 has a larger width than the large pull 3.

When only one wiring receiving material 5 is installed in the OA room, for example, the wiring receiving material 5 is installed next to the large pull 3 that supports one end of the floor panel 4 in the second direction in the OA room and is pulled into the OA room. All power OA cables 8 may be passed through the wiring receiving material 5. In this case, in each of the openings 72 above the wiring receiving material 5, the required number of OA cables 8 are pulled out from the wiring receiving material 5 into the wiring space 44, and the pulled out OA cables 8 are pulled out to the other end in the second direction of the floor panel 4. It can be sent out toward the side. As a result, the OA cable 8 can be distributed in an orderly manner.

Similar to the first and second embodiments, the OA cable 8 arranged in the wiring space 44 is pulled into the indoor side at the pull-in position, or is a space in the large pull 3 (wiring path 50) through another opening 72. Can be inserted into.

In each of the above embodiments, the floor structure of the first floor of the building has been described, but the same structure can be adopted for the floors of the second floor and higher of the building. That is, the floor panel 4 can be placed on a plurality of floor support members extending in the first direction, such as beams (small beams) arranged between the floors of the building. In this case as well, the wiring receiving material forming the wiring path 50 may be provided between the adjacent floor support members, or the floor support member itself may be configured as the wiring path 50.

Further, although the cable arranged in the wiring path 50 and the wiring space 44 is the OA cable 8, other types of cables may be used as long as they are flexible cable-shaped members.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1,1A, 1B Floor structure, 2 bundles, 3 large draws, 4 floor panels, 5 wiring receiving materials, 8 cables, 9 ground, 40 panel units, 41 joists, 42 upper side materials, 43 lower side materials, 44 wiring spaces , 50 wiring lines, 51 flanges, 61 lids, 62 floor openings, 63 through holes, 71 facing sections, 72 openings, 81 interior spaces, 82 underfloor spaces.

Claims (7)

The floor structure of the building
Multiple floor support members that are spaced apart from each other and extend along the first direction,
A floor panel mounted on the plurality of floor support members and
It is located under the floor panel and has a wiring line extending along the first direction.
The floor panels are arranged at intervals from each other, and a first surface which is arranged in parallel with a plurality of joists extending along a second direction intersecting the first direction and sandwiching the plurality of joists in the vertical direction. Including wood and second face material
The first face material located above has a removable or openable lid, and the second face material located below has a face-to-face portion facing the lid.
A floor structure in which an opening for exposing the wiring path is formed in at least a part of the facing portion. The floor structure according to claim 1, wherein at least a part of the wiring path is composed of a wiring receiving material arranged between adjacent floor support members. The floor structure according to claim 2, wherein the wiring receiving material has an opening extending along the first direction in a portion facing the second surface material. At least one of the plurality of floor support members is an opening upward floor support member having an opening extending along the first direction in a portion facing the second face material.
The floor structure according to any one of claims 1 to 3, wherein at least a part of the wiring path is composed of the floor support member facing upward in the opening. A plurality of the wiring paths are provided.
The floor structure according to any one of claims 1 to 4, wherein the lid portion of the first face material and the facing portion of the second face material are provided for each wiring path. The floor structure according to any one of claims 1 to 5, wherein the lid portion is provided with a through hole for drawing a cable arranged on the second surface material into a room. The floor structure according to any one of claims 1 to 6, wherein the floor support member includes a large pull arranged on a bundle erected on the ground or a beam arranged between the floors of a building.

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