JP3319964B2 - Floor panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel for a raised floor.

[0002]

2. Description of the Related Art Conventionally, at least two or more rectangular units each having a rectangular shape in a plan view have been included, and these rectangular units have been interconnected through thin portions to form a rectangular shape as a whole in plan view. There is a floor panel for the formed raised floor. In this floor panel for a free access floor, the floor panel was laid on a floor base material such as a slab, and the floor panels were interconnected by a ring-shaped corner engaging tool. Here, when floor panels are connected to each other with a ring-shaped corner engaging tool, if adjacent floor panels are in contact with each other, a squeak sound is generated when walking, so that a ring-shaped corner engaging tool is used. When the floor panels are connected to each other, a slight clearance (e.g.
(About 6 mm).

[0003] However, in the construction, when laying the floor panels, a method of connecting the floor panels with the corner engaging tool while simultaneously taking a clearance between the floor panels is adopted. Since it takes a lot of time and work time, it is usual to lay the floor panels together without contacting them with clearance, and then connect the floor panels with each other while inserting the corner engaging tools. Then
In the case of such a construction method, in a state where the floor panels are laid side by side with each other, the above-described clearance is generated between adjacent floor panels in a state where the corner engaging tool is inserted and connected later. It is difficult to insert the engagement tool, and if it is forcibly inserted, the floor panel may rise so as to swell without clearance.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has a simple construction for preventing the generation of squeak noise when constructing the floor panel. To provide a floor panel that can be connected so that a slight clearance is reliably generated, and that can be easily and reliably connected to each other by corner engaging tools while the clearance is secured after the floor panels are laid. Is the subject.

[0005]

In order to solve the above-mentioned problems, a floor panel of the present invention includes at least two or more rectangular units 1 each having a rectangular shape in a plan view. A floor panel 3 which is connected to each other via a thin portion 2 and is formed in a rectangular shape in plan view as a whole, and a ring-shaped corner member is provided at four corners of the upper surface of the floor panel 3 in rectangular shape in plan view. the provided fitting groove 5 to be fitted to Gogu 4, single
Section 2 interconnecting the body 1 crawls the information wire
And the adjacent floor panels 3
Between adjacent floor panels 3 in a state of being connected by the fasteners 4
For laying information wires of approximately the same width as the narrow groove 7
The side projections 8 for constituting the electric wire receiving portion are provided on the floor panel 3.
With the floor panel 3 protruding from the side surface and adjacent to the side surface of the side protrusion 8
A small projection 6 for making a substantially point-like contact is formed, and only the small projection 6 having a substantially point-like shape is connected to the floor panel 3 adjacent thereto only in a state of being connected by the ring-shaped corner engaging tool 4. The protrusion dimensions of the small projections 6 are set so as to perform the above. With such a configuration, when the floor panels 3 each having a rectangular shape in a plan view and connected to each other via the thin-walled portions 2 are laid on the floor slab, the adjacent floor panels 3 are connected to the small projections 6. When the floor panels 3 are laid in such a manner that they come into substantially point-like contact with each other, a slight clearance is generated between the adjacent floor panels 3 in portions other than the small projections 6. By connecting the floor panels 3 with each other by the engagement members 4, it is possible to connect the adjacent floor panels 3 while maintaining a slight clearance in a portion other than the substantially point-like contact portion in the small protrusion 6 portion. You can do it. And
When walking, the floor panels 3 adjacent to each other are not in surface contact but in substantially point-like contact, so that creaking is less likely to occur. Further, when the floor panel 3 is laid on a floor slab or the like, the floor panel 3 can be deformed by the thin-walled portion 2 and the unevenness of the floor slab can be absorbed. In addition, the thin portion 2 allows the information wires to crawl.
It becomes the narrow groove part 7 and the adjacent floor panels 3
4 between the floor panels 3 adjacent to each other in a state where
Wire receiving section for laying information wires of approximately the same width as
Side projections 8 are formed on the side surfaces of the floor panel 3 to form
Between the unit 1 of the floor panel 3 and the unit 1
By the narrow groove 7 and the lateral projection 8 between the adjacent floor panels 3
It is possible to lay information wires on the configured wire receiver.
You can do it.

[0006]

Further, the unit body 1 is composed of a unit body 9 with a top plate and a unit body 10 with a groove, and the unit body 9 with a top plate is constructed by hanging legs 12 from the four corners of the top plate 11. The body 10 has a plurality of legs 14 erected around a wiring groove 13 opened upward, and a lid 15 is detachably mounted on an upper opening of the wiring groove 13 and is provided below the wiring groove 13. Bottom plate 16
The floor panel 3 having a rectangular shape in plan view is divided into nine blocks in three rows each in a vertical direction and a horizontal direction, and the unit body 9 with the top plate is arranged in four blocks in four corners. At the same time, five units of the grooved units 10 are arranged in the central five cross-shaped blocks, and the wiring grooves 13 provided in the five units of the grooved units 10 arranged in a cross shape communicate with each other. As a whole, a cross-shaped groove is formed, and a fitting groove 5 for fitting the ring-shaped corner engaging tool 4 is provided at an outer corner portion of the unit 9 with a top plate located at the four corners of the floor panel 3. Unit 9 with top plate
It is also preferable to form the small projections 6 on the side surfaces of. With such a configuration, the floor panel 3 is divided into nine blocks, and the thin wall portion 2 connecting the unit bodies 1 constituting each block can be deformed to absorb irregularities of the floor slab, and An electric wire can be wired using the cross-shaped groove, and the wiring work can be easily performed by attaching / detaching the lid 15 for the wiring.

The floor panel 3 has a square shape in plan view, and one small projection 6 is provided on each of four sides of the floor panel 3 at a position shifted laterally from the lateral center of each side. It is also preferable that the small projections 6 on the side surfaces to be arranged are arranged at rotationally symmetric positions about the center point of the floor panel 3. With such a configuration, the floor panel 3 adjacent to the small projections 6 can be constructed such that a slight clearance is generated in a portion other than the substantially point-shaped contact portion in the small projections 6 with a small number of small projections 6. Floor panel 3 from any direction of construction
Can be performed such that a slight clearance is generated in portions other than the substantially point-like contact portions in the small projections 6.

The adjacent floor panels 3 are connected to each other by connecting the adjacent floor panels 3 with each other by a ring-shaped corner engaging tool 4.
It is also preferable to set the formation position of the small projections 6 on the floor panel 3 so that the small projections 6 provided on the floor panel 3 come into contact with each other. With such a configuration, squeak noise due to walking or the like can be further prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings. The floor panel 3 of the present invention is laid directly on a floor slab or the like, and is a floor panel of a so-called free access floor type. The floor panel 1 includes at least two or more rectangular unit bodies 1 each having a rectangular shape in plan view, and these rectangular unit bodies 1 are interconnected via a thin portion 2 to form a rectangular shape as a whole in plan view. In the embodiment shown in the accompanying drawings, as shown in FIGS. 1 and 3, a total of nine unit bodies 1 each having a length and width of three are connected to each other via a thin-walled part 2 to form a whole. It is formed in a square shape in plan view.

The unit body 1 includes a unit body 9 with a top plate and a unit body 10 with a groove. The unit body 9 with a top plate is divided into nine blocks of three rows each in the vertical and horizontal directions in the plan view. 4
The grooved unit bodies 10 are arranged in five blocks each having a central cross shape. As shown in FIG. 4, the unit 9 with a top plate has a configuration in which the legs 12 are suspended from four corners of the top plate 11. Further, in the present embodiment, a plurality of auxiliary legs 20 are formed so as to hang down at a portion including at least the central portion of the top plate 11 and excluding the four corners, and the lower end of the auxiliary legs 20 is lower than the lower end of the leg portion 12. It is located slightly above, and when installed on the floor slab, the lower end of the auxiliary leg 20 is located slightly above the four corners of the legs 12, thereby absorbing unevenness of the floor slab and, furthermore, loading from above. When the load is applied, the lower end of the auxiliary leg 20 contacts the floor slab to support the load.

In the grooved unit 10, a plurality of legs 14 are erected around the wiring groove 13 opened upward, and a lid receiving portion 21 is further provided on the leg 14 so that the lid receiving portion 21 is provided. A cover 15 for closing the upper opening of the wiring groove 13 is detachably attached to the wiring 21. Here, the legs 14 are connected to each other via a bottom plate 16 provided below the wiring groove 13.

The five grooved units 10 are disposed at the center of the cross, and one grooved unit 10a is disposed at the front, rear, left and right of the grooved unit 10a at the center. The grooved unit 10a is formed of four other grooved units 10b. The grooved unit 10a has legs 14 standing at four corners of the upper surface of the bottom plate 16 so that the wiring groove 13 has a cross shape. The grooved unit 10b has legs 14 erected along both sides of the upper surface of the bottom plate 16 so that the wiring grooves 13 are linear. The wiring grooves 13 provided in the five-unit grooved units 10 arranged in a cross shape are the same as the cross-shaped wiring grooves 13 of the grooved unit body 10a, and four wiring grooves 13 arranged in front, rear, left and right. Grooves 13 for each wiring of the grooved unit body 10b
Communicate with each other to form a cross-shaped groove as a whole.

The thin portion 2 connecting adjacent unit bodies 1 is located slightly below the upper surface of the unit body 1,
Are narrow grooves 7 for laying information wires. In the figure, reference numeral 22 denotes a slip-off preventing projection provided on the upper part of the thin portion 2 so that when the information wire is laid in the narrow groove 7, the information wire is hardly pulled out by the slip-off preventing protrusion 22. I have.

The four side surfaces of the floor panel 1 have side projections 8.
Is protruding outward. The side projection 8 has a projection length substantially half the distance between the adjacent unit bodies 1 connected via the thin portion 2. Here, the side projection 8
Are provided on the outer surface of the unit 9 with the top plate and the outer surface of the unit 10 with the groove, which constitute the four side surfaces of the floor panel 1. In addition, fitting grooves 5 for fitting the ring-shaped corner engaging tools 4 are provided at outer corners of the unit 9 with the top plate located at the four corners of the floor panel 3. The fitting groove 5 includes an arcuate fitting groove 5a and a fitting hole groove 5b formed in a part of the arcuate fitting groove 5a.

Further, small projections 6 having a substantially point shape are provided on the outer surface of the unit 9 with a top plate located at the four corners of the floor panel 3. Here, an example of the projection size of the small protrusion 6 is, for example, about 0.6 mm. In the embodiment shown in the accompanying drawings, the small projections 6 are protruded from the outer surface of the lateral projection 8 (that is, the protruding tip surface). The small projections 6 do not need to be provided on all the side projections 8. In the embodiment shown in FIG. 1, one small projection 6 is provided on each of the front, rear, left and right sides of the floor panel 3 having a square shape in plan view. A plurality of lateral projections 8 provided on the front, rear, left and right sides of the floor panel 3 respectively.
One of them is provided with a small projection 6. As described above, the small projections 8 provided one on each of the four side surfaces of the floor panel 3 are provided on the four side surfaces of the floor panel 3 at positions shifted laterally from the lateral center of each side surface. At least the small projections 6 on the opposing side surfaces are arranged at 180 ° rotationally symmetric positions about the center point of the floor panel 3. In the accompanying drawings, four small projections 6 each have an adjacent small projection 6 centered on the center point of the floor panel 3.
It is arranged 0 ° rotationally symmetric.

The ring-shaped corner engaging device 4 is shown in FIGS.
As shown in FIG. 2, a ring-shaped main body 25, four fitting protrusions 26 protruding from the ring-shaped main body 25, and a ring-shaped main body 25.
And a flexible portion 27 that is recessed downwardly formed between the fitting projections 26. The fitting projections 26 are positioned at an opening angle of 90 ° from the center of the ring of the ring-shaped main body 25. Relationship. Further, the respective flexible portions 27 are in a positional relationship with each other at an opening angle of 90 ° from the center of the ring of the ring-shaped main body 25. Further, the flexible portion 2 and the fitting projection 26 are located 45 degrees from the center of the ring of the ring-shaped main body 25.
The positional relationship is an opening angle of °.

Thus, the floor panels 3 are laid out in front, rear, right and left, and the ring-shaped engaging members 4 are arranged at the portions where the corners of the four floor panels 3 face each other. The four floor panels 3 are connected to each other by a ring-shaped engaging member 4 by fitting into a fitting groove 5 provided in a corner of one floor panel 3. In the state in which the four floor panels 3 are connected to each other by the engaging members 4, only the small projections 6 of the adjacent floor panels 3 are substantially in point-like contact with the side projections 8 on the side surfaces of the adjacent floor panel 3. A slight clearance is generated in portions other than the point-like contact portions (a clearance between the opposing side protrusions 8 is equal to the protrusion length of the small protrusion 6 in the embodiment, and a side surface is formed in portions other than the side protrusions 8). The length obtained by adding the protrusion length of the small protrusion 6 to the length twice as long as the protrusion 8 Projecting dimension of the small projections 6 clearance occurs) so that has been set.

With such a configuration, in the present invention, when the floor panels 3 are constructed, many floor panels 3 are first laid on the floor slab (that is, the adjacent floor panels 3 are connected to each other in FIG. 10). So that it is laid so that only the small projections 6 are brought into substantially point-like contact with each other),
Then, as shown in FIG. 9, a ring-shaped engaging member 4 is arranged at a portion where the corner portions of the four floor panels 3 face each other, and the ring-shaped engaging members 4 are respectively connected to the corners of the four floor panels 3. And the fitting 4 can be easily and accurately fitted into the fitting groove 5. Here, the fitting 4 is such that a part of the ring-shaped main body 25 is fitted into the arc-shaped fitting groove 5a and the fitting projection 26 is fitted into the fitting hole groove 5b for each floor panel 3. In addition, downwardly concave flexible portions 27 provided at four places of the ring-shaped main body 25 are arranged between the adjacent floor panels 3.

On the other hand, when the floor panels 3 are connected to each other by the engagement members 4 as described above, the side projections 8 provided on the side surfaces of the adjacent floor panels 3 as shown in FIG. No contact is made because there is a minute clearance, but it is opposed through the slight clearance, and a wire receiving portion for receiving an information wire is formed by the side projections 8. Therefore, the information wires can be routed in the wire receiving portion formed by the narrow groove portion 7 between the unit bodies 1 of the floor panel 3 and the side projections 8 between the adjacent floor panels 3. Things. In this case, in the ring-shaped engaging member 4, the information wire is wired in the flexible portion 27 that is recessed downward.

An electric wire such as a power line is wired in the wiring groove 13.
5 is opened for construction. As described above, a large number of floor panels 3 are laid and connected to each other by a ring-shaped engaging member 4, and information wires and power lines are wired.
After the lid 15 is closed, as shown in FIG. 6, a floor finishing material 30 such as carpet is laid on the upper surface side of the floor panel 3.

Then, when walking on the floor finishing material 30,
Since the floor panels 3 connected to each other by the engaging members 4 are only in contact with each other at only the substantially point-like contact portions formed by the small projections 6,
The generation of squeak noise is suppressed as compared with the case where adjacent floor panels 3 abut against each other by surface contact. By the way, as in the above embodiment, the floor panel 3 has a square shape in plan view, and one small projection 6 is provided on each of four side surfaces of the floor panel 3 at a position shifted laterally from the lateral center of each side surface. In the case where the small projections 6 on the opposing side surfaces are arranged at rotationally symmetric positions, the number of the small projections 6 is reduced, and even if the floor panel 3 is abutted from any direction, the small projections 6 are placed on the adjacent floor panel. The small protrusions 6 can be secured to the side projections 8 in a substantially point-like manner, and a small clearance corresponding to the length of the small projections 6 can be secured between the side projections 8, thereby improving workability. FIGS. 13A, 13B, 13C, and 13D are schematic diagrams for explaining that the floor panels 3 are butted from different directions. In FIG. 13, when the four side surfaces of the floor panel 3 are A, B, C, and D, respectively, for convenience, the small projections 6 are adjacent to each other under the same conditions even if the mating directions are variously changed and the mating side surfaces are changed. Floor panel 3
A small clearance between the side projections 8 by the length of the small projections 6 can be secured.

FIG. 13 shows an example in which a small projection 6 is provided at the center of the lateral projection 8 in the lateral width direction.
(B) As shown in the schematic diagrams of (c) and (d), the small projections 6 may be provided so as to be offset to one side in the lateral width direction of the side projections 8. When one small protrusion 6 is provided on each side as described above, a slight clearance corresponding to the length of the small protrusion 6 can be secured between the side protrusions 8 under the same conditions even if the abutting direction is changed. The number of the small projections 6 can be minimized, and the mold structure can be simplified. However, the number of the small projections 6 may be two on each side of the floor panel 3. In this case, the number of the small protrusions 6 increases, but as shown in FIGS. 15A, 15B, 15C, and 15D, the protrusions of the small protrusions 6 A slight clearance for the length can be secured.

Also, as in the embodiment shown in FIGS. 16 (a) and 16 (b), the adjacent floor panels 3 may be configured such that the small projections 6 substantially abut each other. In this case, the small projections 6 having a substantially point shape contact each other, so that the squealing noise can be further suppressed.

[0025]

According to the first aspect of the present invention, as described above, at least two or more rectangular units having a rectangular shape in plan view are included, and these rectangular units are thin. A floor panel formed as a whole in a rectangular shape in plan view by being connected to each other through a portion, and a ring-shaped corner engaging tool is fitted to corner portions at four corners of the upper surface of the floor panel in rectangular shape in plan view. Providing mating grooves to connect the units to each other
The thin part becomes a narrow groove for laying information wires,
Adjacent floor panels are connected by corner engaging tools
Information wires of approximately the same width as the narrow groove between the floor panels that fit
Side projections to form an electric wire receiving part for crawling
On the side of the floor panel and the floor adjacent to the side of the side projection
A small projection for making a substantially point-like contact with the panel is formed, and only the small-point portion having a substantially point-like shape is brought into substantially point-like contact with an adjacent floor panel only in a state of being connected by the ring-shaped corner engaging tool. Since the projection size of the small projection is set on the floor slab, the floor panels having a rectangular shape in a plan view and connected to each other via a thin portion are laid on the floor slab. By laying so as to make contact in a point-like manner, a slight clearance occurs between the adjacent floor panels in parts other than the small protrusions,
By connecting the floor panels with each other with the corner engaging tool while the floor panels are laid, a state where a slight clearance remains between the adjacent floor panels in a portion other than the substantially point-like contact portion in the small projection portion. The connection can be easily and accurately performed by the engagement tool, and the construction can be easily performed. Moreover, since adjacent floor panels are not in surface contact but in substantially point-like contact, creaking is unlikely to occur when walking, and the floor panels are laid on a floor slab or the like. In this case, the floor panel can be deformed by the thin-walled portion to absorb irregularities of the floor slab, and even a floor panel having a relatively large area does not hinder construction. In addition, the thin part
It becomes a narrow groove to lay the information wire,
Floor panels adjacent to each other with the
Lay an information wire approximately the same width as the narrow groove
Side projections to form wire receptacles for floor panels
Because it protrudes from the side of the
With a narrow groove between the floor panels and side projections between adjacent floor panels
It is laid wire for information to the wire receiving section that consists
It is easy to wire information wires.
You.

[0026]

Further, in the second aspect of the invention, in addition to the effect of the invention according to the first aspect, and a unit body with a top fitted with a unit body and grooved unit body, the top fitted with a unit body With four legs hanging down from the four corners of the top plate, and a grooved unit with multiple legs standing around the wiring groove that opens upward, and a lid attached to and detached from the upper opening of the wiring groove. The floor panel has a rectangular shape in plan view and is divided into nine blocks of three rows each in the vertical and horizontal directions, and the legs are connected to each other via a bottom plate provided in the lower part of the wiring groove. The unit with the top plate is arranged in the four blocks of the above, and the unit with the groove is arranged in the five blocks in the center cross shape, and the unit with the groove is arranged in the cross in the five units. The wiring grooves provided are connected to each other to form a cross-shaped groove as a whole, and the outside of the unit with the top plate located at the four corners of the floor panel A fitting groove for fitting a ring-shaped corner engaging tool is provided at a corner portion, and a small projection is formed on a side surface of the unit body with the top plate. Therefore, the floor panel is divided into nine blocks, and each block is constituted. In addition to being able to absorb the unevenness of the floor slab, the thin section connecting the unit bodies can absorb irregularities of the floor slab, wire can be wired using cross-shaped grooves, and wiring can be easily done by attaching and detaching the lid They can work.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect , the floor panel has a square shape in plan view, and the floor panel has a square shape. One small protrusion is provided on the side surface at a position shifted laterally from the lateral center of each side surface, and the small protrusion on the opposite side surface is arranged at a rotationally symmetric position about the center point of the floor panel. With a small number of small projections, the adjacent floor panel can be constructed so that a slight clearance occurs in the parts other than the substantially point-like contact part in the small projection part, and the floor panel can be constructed from any direction of the construction direction However, the construction can be performed so that a slight clearance is generated in a portion other than the substantially point-shaped contact portion in the small projection portion, and the construction can be performed more easily.

Further, in the invention according to claim 4 , in addition to the effects of the invention described in claim 1 or 2 , the adjacent floor panels are connected to each other by a ring-shaped corner engaging tool. Since the small projections formed on the floor panel are set so that the small projections provided on adjacent floor panels are in contact with each other in the state, the squeak noise caused by walking can be more reliably prevented. It is.

[Brief description of the drawings]

FIG. 1 is a plan view of a floor panel according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view showing a state in which the lid is removed.

FIG. 4 is a partially omitted perspective view of the same as viewed from below.

FIG. 5 is a side view showing a state in which the lid is removed.

FIG. 6 is a partially broken perspective view of the same working condition.

FIG. 7 is an enlarged plan view of a unit body with a top plate in the same.

FIG. 8 is an enlarged side view of the top plate-attached unit body part.

FIG. 9 is an enlarged plan view of a main part in a state where the floor panel is laid down.

FIG. 10 is an enlarged front view showing a state in which the floor panels are brought into contact with each other with small projections.

FIG. 11 is an exploded perspective view showing connection by a ring-shaped corner engaging tool of the above.

12A and 12B show a ring-shaped corner engaging tool used in the embodiment, wherein FIG. 12A is a plan view and FIG. 12B is a side view.

FIG. 13 shows an embodiment of the arrangement of the small projections of the present invention,
(A), (b), (c), and (d) are schematic diagrams when the striking directions of the floor panels are different.

FIG. 14 shows another embodiment of the arrangement of the small projections of the present invention, and (a), (b), (c), and (d) are schematic diagrams when the striking directions of the floor panels are different.

FIG. 15 shows still another embodiment of the arrangement of the small projections of the present invention, and (a), (b), (c), and (d) are schematic diagrams when the striking directions of the floor panels are different.

FIG. 16 shows still another embodiment of the arrangement of the small projections of the present invention, and (a) and (b) are schematic diagrams when the striking directions of the floor panels are different.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit body 2 Thin part 3 Floor panel 4 Corner engaging tool 5 Fitting groove 6 Small protrusion 7 Narrow groove part 8 Side protrusion 9 Unit with top plate 10 Unit with groove 11 Top plate 12 Leg 13 Wiring groove 14 Leg Part 15 Lid 16 Bottom plate part

Claims (4)

(57) [Claims] 1. At least two or more rectangular units each having a rectangular shape in a plan view are formed, and these rectangular units are mutually connected via thin portions to form a rectangular shape as a whole in a plan view. A floor panel, in which a fitting groove for fitting a ring-shaped corner engaging tool is provided in four corners of the upper surface of the rectangular floor panel in a plan view to connect the unit bodies to each other.
Part is a narrow groove for laying information wires,
Floor panels are adjacent to each other with the corner panels connected to each other
Crawling information wires of approximately the same width as the narrow groove between floor panels
Side projections to form the wire receiving section
The floor panel that projects from the side of the panel and is adjacent to the side of the side projection
Small projections for making substantially point-shaped contact with the floor panel so that only the substantially pointed small projections are connected to the adjacent floor panel substantially only in a state of being connected by the ring-shaped corner engaging tool. A floor panel characterized in that a projection size of a small projection is set on the floor panel. 2. The unit body is composed of a unit body with a top plate and a unit body with a groove.
Configure the unit with the top plate and drop the legs from the four corners of the top plate
The grooved unit is constructed around the wiring groove opened upward.
A plurality of legs, and attach a lid to the upper opening of the wiring groove.
Bottom plate that is detachably mounted and provided below the wiring groove
The legs are connected to each other via
-Shaped floor panel is divided into 9 blocks of 3 rows each vertically and horizontally,
Place the unit with the top plate in the four blocks at the four corners and center
5 units of grooved units are arranged in 5 cross-shaped blocks.
And provided in 5 units of grooved units arranged in a cross shape
Wiring grooves communicate with each other to form a cross-shaped groove as a whole
The outer core of the unit with the top plate located at the four corners of the floor panel
A fitting groove for fitting a ring-shaped corner engaging tool is
In this case, a small projection is formed on the side of the unit with top plate.
The floor panel according to claim 1, wherein: 3. The floor panel has a square shape in plan view,
On the four sides of the floor panel more than the lateral center of each side
One small projection is provided at a position shifted to
Rotational symmetry of the small protrusion on the side about the center point of the floor panel
Claim 1 or Claim characterized by being arranged in a position
Item 3. The floor panel according to item 2. 4. An adjoining floor pad with a ring-shaped corner engaging tool.
Small panels installed on adjacent floor panels with the
Place the floor so that the projections are in contact with each other.
Characterized in that the position of forming small projections on the tunnel is set.
The floor panel according to claim 1 or 2, wherein the floor panel is formed.