Floor panel unit and floor structure

Abstract

To improve workability of a floor surface on which wiring can be routed and improve the degree of freedom of wiring routing.SOLUTION: A floor panel unit 2 constituting a floor surface has a plurality of floor panels 4 having a rectangle planar shape and a connection member 5 for connecting the plurality of floor panels 4. A first groove 44 and a second groove 45 which intersect with each other are formed on a top face 43 of each of the plurality of floor panels 4. The plurality of floor panels 4 are arranged adjacently to each other so that the first grooves 44 communicate with each other to form communication grooves 4411, 4421. In this state, the connection member 5 is inserted in the communication grooves 4411, 4421 and fixed to each of the plurality of floor panels 4, thereby causing the plurality of floor panels 4 to be connectable.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a floor panel unit and a floor structure that constitute a floor surface of a building.

Background Art

[0002] As a floor structure of a building, particularly a floor structure for office use, there is known a floor structure having a floor surface that enables wiring for connecting OA (Office Automation) equipment including image forming devices such as personal computers, copiers, and facsimile machines. A precast concrete slab as a floor panel for forming such a floor surface is disclosed in Patent Document 1. A plurality of concave grooves for routing wiring for OA equipment are formed on the surface of the precast concrete slab disclosed in Patent Document 1.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When increasing the floor area to expand the installable area of OA equipment, if the entire floor surface is composed of a single floor panel, the weight of the floor panel becomes extremely large, resulting in deteriorated workability of the floor surface. Also, when the entire floor surface is composed of a single floor panel, it is difficult to form floor surfaces of various sizes and shapes. As a measure to solve such problems, it is conceivable to form the floor surface with a plurality of floor panels. In this case, the floor surface is formed by arranging a plurality of floor panels having grooves formed on the upper surface adjacent to each other.

[0005] However, simply placing multiple floor panels adjacent to each other may make it difficult to maintain communication between the grooves of the multiple floor panels. If the grooves of multiple floor panels are not connected, the flexibility of wiring routing will be reduced.

[0006] This invention has been made in view of these circumstances, and its purpose is to improve the workability of floor surfaces that allow for wiring and to improve the degree of freedom in wiring. [Means for solving the problem]

[0007] A floor panel unit according to one aspect of the present invention is a unit that constitutes a floor surface. This floor panel unit has a rectangular planar shape having a pair of first sides extending in a predetermined first direction and a pair of second sides extending in a second direction perpendicular to the first direction, and comprises a plurality of floor panels supported from below by floor beams, and a connecting member for connecting the plurality of floor panels. On the upper surface of each of the plurality of floor panels that constitute the floor surface, a first groove is formed that extends along the entire length in the first direction and opens upward, and a second groove is formed that extends along the entire length in the second direction and opens upward, intersecting the first groove. The plurality of floor panels are arranged adjacent to each other such that the first grooves communicate with each other to form a communication groove. The connecting member is inserted into the communication groove such that a space is formed that extends in the longitudinal direction of the communication groove and opens upward, and is fixed to each of the plurality of floor panels, thereby enabling the plurality of floor panels to be connected.

[0008] This floor panel unit has a rectangular planar shape, and each of the upper surfaces of the multiple floor panels has a first groove and a second groove that intersect with each other. Wiring connected to office automation equipment can be routed using the first and second grooves of each floor panel. The floor surface is formed by arranging multiple floor panels, each with a first and second groove formed on its upper surface, adjacent to one another. By forming the floor surface with multiple floor panels in this way, the weight of each floor panel can be reduced compared to when the entire floor surface is made of a single floor panel, thus improving the ease of installation of the floor surface that allows for wiring. Furthermore, by forming the floor surface with multiple floor panels, it is possible to easily create floor surfaces of various sizes and shapes, thereby increasing the design flexibility regarding the size and shape of the floor surface.

[0009] Furthermore, multiple floor panels are arranged adjacent to each other such that their first grooves communicate with each other to form a connecting groove. In this state, the connecting members are inserted into the connecting grooves so as to extend in the longitudinal direction of the connecting groove and open upward, and are fixed to each of the multiple floor panels, thereby enabling the connection of multiple floor panels. As a result, with the first grooves of each floor panel communicating to form a connecting groove, the multiple floor panels can be integrated by the connection made by the connecting members inserted into the connecting groove. By integrating the multiple floor panels, the communication state between the first grooves of each floor panel can be maintained, and the positional relationship between the second grooves between adjacent floor panels is also maintained. As a result, wiring can be freely routed in the planar direction of the floor surface using the first and second grooves formed on the upper surfaces of the multiple floor panels, thereby improving the degree of freedom in wiring routing.

[0010] In the floor panel unit described above, the connecting member may have a configuration comprising a mounting plate portion that rests on the bottom surface of the first groove, and a pair of side plate portions that rise from each of the two ends of the mounting plate portion. In this case, the pair of side plate portions have communication holes that communicate with the second groove when the mounting plate portion is resting on the bottom surface of the first groove.

[0011] In this embodiment, the bending strength of the connecting member can be increased by providing a connecting member having a mounting plate portion that rests on the bottom surface of the first groove of the floor panel, and a pair of side plate portions that rise from each of the ends of the mounting plate portion. This suppresses deformation of the connecting member when multiple floor panels are connected and integrated, thereby enhancing the connecting effect of the connecting member on multiple floor panels.

[0012] Furthermore, the pair of side plates have communication holes that connect to the second groove when the mounting plate is placed on the bottom surface of the first groove. In this case, when the mounting plate is placed on the bottom surface of the first groove, the communication between the second groove and the first groove on the upper surface of the floor panel is prevented from being blocked by the pair of side plates when the mounting plate is placed on the bottom surface of the first groove. This prevents a decrease in the degree of freedom of wiring routing using the first and second grooves when the connecting member is inserted into the communication groove.

[0013] The floor panel unit described above may further include a fixing member for fixing the connecting member to the floor beam. In this case, the fixing member has a beam mounting portion attached to the floor beam and a fixing portion extending upward from the beam mounting portion and fixed to the connecting member.

[0014] In this embodiment, the fixing member is fixed to a connecting member that connects multiple floor panels, with the beam attachment portion attached to the floor beam. This restricts the movement of the floor panels in the planar direction, including the first and second directions, relative to the floor beam.

[0015] In the floor panel unit described above, the first groove may include a first edge groove that is arranged along at least one edge of the pair of first sides and has a shape that opens in the direction of the end face facing the second end face of the floor panel. In this case, the aforementioned mounting plate portion has a width dimension that allows it to be placed on the bottom surface of the first edge groove while protruding from the floor panel in the direction of the end face, and the portion of the aforementioned mounting plate portion that protrudes from the floor panel is provided with a fixed portion to which the fixing portion is fixed.

[0016] In this embodiment, the first groove formed on the upper surface of the floor panel includes a first edge groove positioned along at least one edge of a pair of first sides of the floor panel. In this case, the connecting member is inserted into a connecting groove formed by the communication of the first edge grooves of each floor panel. When the mounting plate portion of the connecting member is placed on the bottom surface of the first edge groove, a portion of the mounting plate portion protrudes outward from the edge of the first side of the floor panel. This protruding portion of the mounting plate portion is provided with a fixed portion to which the fixing portion of the fixing member is fixed. In other words, when the beam mounting portion of the fixing member is attached to the floor beam, the fixing portion is fixed to the fixed portion provided on the protruding portion of the mounting plate portion of the connecting member. This restricts the movement of the floor panel relative to the floor beam.

[0017] A floor structure according to another aspect of the present invention comprises the above-mentioned floor panel unit and floor beams that support the plurality of floor panels of the floor panel unit from below.

[0018] According to this floor structure, the upper surfaces of multiple floor panels supported by floor beams, each having a first groove and a second groove formed therein, can be configured to create a floor surface that allows for the routing of wiring connected to office automation equipment. [Effects of the Invention]

[0019] As described above, the present invention improves the workability of floor surfaces that allow for wiring and also improves the degree of freedom in wiring. [Brief explanation of the drawing]

[0020] [Figure 1] It is a perspective view of a floor structure to which a floor panel unit according to an embodiment of the present invention is applied. [Figure 2] It is a cross-sectional view showing an enlarged view of a portion where a plurality of floor panels are connected by a connecting member in the floor panel unit. [Figure 3] It is a view showing a floor panel set including a plurality of types of floor panels. [Figure 4] It is a plan view showing a floor panel unit constituted by a plurality of types of floor panels included in the floor panel set of FIG. 3. [Figure 5] It is a plan view showing the positional relationship between a plurality of floor panels and floor beams in the floor panel unit of FIG. 4. [Figure 6] It is a plan view showing a floor panel unit constituted by a floor panel according to a comparative example. [Figure 7] It is a view showing a modified example of a floor panel set including a plurality of types of floor panels. [Figure 8] It is a plan view showing a floor panel unit constituted by a plurality of types of floor panels included in the floor panel set of FIG. 7. [[ID=,27]]

Mode for Carrying Out the Invention

[0021] Hereinafter, a floor panel unit and a floor structure according to an embodiment of the present invention, and a floor panel and a floor panel set constituting the floor panel unit will be described based on the drawings. In the following, the direction relationship will be described using the XYZ orthogonal coordinate axes. The X-axis direction is a direction parallel to the horizontal plane, the Y-axis direction is a direction orthogonal to the X-axis direction on the horizontal plane, and the Z-axis direction is the vertical direction orthogonal to both the X and Y directions.

[0022] [Floor Structure and Floor Panel Unit] Figures 1 and 2 show a floor structure 1 to which the floor panel unit 2 according to this embodiment is applied. The floor structure 1 is a building floor structure having a floor surface that allows for the routing of wiring connected to office automation equipment, including personal computers, photocopiers, and image forming devices such as facsimile machines. The floor structure 1 comprises a floor panel unit 2 and a plurality of floor beams 8.

[0023] In the example shown in Figure 1, multiple floor beams 8 extend in the X-axis direction and are arranged parallel to each other at predetermined intervals in the Y-axis direction. The floor beams 8 are made of, for example, H-shaped steel with an H-shaped cross-section. In this case, the floor beams 8 have a pair of flanges 81 and a web 82 connecting the two flanges 81. The floor beams 8 are arranged so as to extend in the X-axis direction with the pair of flanges 81 aligned in the Z-axis direction.

[0024] The floor panel unit 2 is a unit for forming the floor surface of a building. The floor panel unit 2 comprises a plurality of floor panels 4, a connecting member 5 for connecting the plurality of floor panels 4, a plurality of fixing members 6 arranged corresponding to each floor panel 4, and a plurality of vibration-damping materials 7 provided on the floor beam 8.

[0025] Multiple floor panels 4 are supported from below by each floor beam 8, straddling two adjacent floor beams 8 and positioned adjacent to each other in the X-axis and Y-axis directions. The floor panels 4 are made of, for example, floor slabs, ALC (autoclaved lightweight aerated concrete), hollow extruded cement boards, or precast concrete boards. Floor panels 4 made of hollow extruded cement boards have a hollow section, which is filled with a sandy inorganic material.

[0026] The floor panel 4 is a plate-shaped member having a rectangular planar shape with a pair of first sides 41 extending in a predetermined first direction D1 and a pair of second sides 42 extending in a second direction D2 perpendicular to the first direction D1. In the example shown in Figure 1, the floor panel 4 is spanned between two floor beams 8 such that the pair of first sides 41 extend in the X-axis direction and the pair of second sides 42 extend in the Y-axis direction. In this state, multiple floor panels 4 are provided on each floor beam 8 adjacent to each other in the X-axis direction along the horizontal plane. Specifically, the multiple floor panels 4 are arranged adjacent to each other such that the pair of first sides 41 are each positioned on the flange 81 of each floor beam 8, and one of the pair of second sides 42 abuts against each other, and in this state they are supported from below by each floor beam 8.

[0027] Each of the multiple vibration-damping materials 7 is a member that can elastically deform in response to the relative movement of the floor panel 4 with respect to the floor beam 8. The vibration-damping materials 7 are made of synthetic resin such as polyurethane or rubber. Each of the multiple vibration-damping materials 7 elastically deforms between the floor beam 8 and the floor panel 4, thereby suppressing the transmission of vibrations from the floor panel 4 to the floor beam 8.

[0028] The dimensions, hardness, placement, and number of vibration-damping materials 7 are determined based on the load on the vibration-damping materials 7 (i.e., the weight of the floor panels 4 placed on the vibration-damping materials 7 and the load on the floor panels 4) so ​​that the transmission of vibrations from the floor panels 4 to the floor beams 8 can be effectively suppressed. Figure 1 shows an example in which vibration-damping materials 7 are placed on the upper flange 81 of a pair of flanges 81 of the floor beams 8, at positions corresponding to the four corners of each floor panel 4 in a plan view.

[0029] The upper surfaces 43 of each of the multiple floor panels 4 constitute the floor surface of the building. The upper surface 43 of each floor panel 4 has multiple first grooves 44 that extend along the entire length of a pair of first sides 41 extending in a first direction D1 and open upward, and at least one second groove 45 that extends along the entire length of a pair of second sides 42 extending in a second direction D2 and opens upward, intersecting the first grooves 44. Wiring connected to office automation equipment can be routed using the first grooves 44 and second grooves 45 of each floor panel 4. The floor surface is formed by arranging multiple floor panels 4 with the first grooves 44 and second grooves 45 formed on their upper surfaces 43 adjacent to each other. By forming the floor surface with multiple floor panels 4 in this way, the weight of each floor panel 4 can be reduced compared to when the entire floor surface is formed with a single floor panel, thus improving the workability of the floor surface that allows for wiring. Furthermore, by constructing the floor surface using multiple floor panels 4, it is possible to easily construct floor surfaces of various sizes and shapes, thereby improving the design flexibility regarding the size and shape of the floor surface.

[0030] The plurality of first grooves 44 formed on the upper surface 43 of the floor panel 4 include a pair of first edge grooves 441 that are arranged along each edge of a pair of first sides 41, open upward, and open in the direction of the end face facing the end face in the second direction D2 of the floor panel 4. Furthermore, if the pair of second sides 42 is longer than the pair of first sides 41, the plurality of first grooves 44 further include at least one first intermediate groove 442 that is arranged at predetermined equal intervals between the pair of first edge grooves 441 in the second direction D2 and opens upward.

[0031] The second groove 45 formed on the upper surface 43 of the floor panel 4 includes a pair of second edge grooves 451 that are arranged along each edge of a pair of second sides 42, open upward, and open in the direction of the end face facing the first direction D1 on the floor panel 4.

[0032] As previously described, the multiple floor panels 4 are arranged adjacent to each other, with a pair of first sides 41 each positioned on the flange 81 of each floor beam 8, and one of a pair of second sides 42 abutting against each other, and are supported from below by each floor beam 8 in this state. In this state, the multiple floor panels 4 are arranged adjacent to each other on each floor beam 8, and a first edge connecting groove 4411 is formed by the communication of a pair of first edge grooves 441 of each floor panel 4, and a first intermediate connecting groove 4421 is formed by the communication of a pair of first intermediate grooves 442. Additionally, a butt connecting groove 4511 is formed at the abutting portion where the second sides 42 of each floor panel 4 abut against each other, by the combination of second edge grooves 451.

[0033] With multiple floor panels 4 arranged adjacent to each other on each floor beam 8, the connecting member 5 is configured to connect multiple floor panels 4 by being inserted from above into each communication groove of at least the first edge communication groove 4411 of the first edge communication groove 4421 and fixed to each of the multiple floor panels 4 by fasteners such as fastening bolts. The connecting member 5 is inserted into each communication groove of at least the first edge communication groove 4411 of the first edge communication groove 4421 and the first intermediate communication groove 4421 such that a space is formed that extends in the longitudinal direction of each communication groove and opens upward.

[0034] As a result, a first edge connecting groove 4411 is formed where a pair of first edge grooves 441 of each floor panel 4 communicate with each other, and a first intermediate connecting groove 4421 is formed where two first intermediate grooves 442 communicate with each other. With these grooves connected by connecting members 5 inserted into at least the connecting grooves of the first edge connecting groove 4411, multiple floor panels 4 can be integrated. This integration of multiple floor panels 4 allows the communication state of the first grooves 44 of each floor panel 4 to be maintained, as well as the positional relationship between the second grooves 45 between adjacent floor panels 4. This allows wiring to be freely routed in the planar direction of the building's floor surface using the first grooves 44 and second grooves 45 formed on the upper surface 43 of the multiple floor panels 4, thereby improving the freedom of wiring routing.

[0035] Furthermore, as previously described, in the floor structure 1 to which the floor panel unit 2 is applied, vibration-damping material 7 is provided between the floor beam 8 and the multiple floor panels 4. As a result, the vibration-damping material 7 elastically deforms in response to the vibration of each floor panel 4, thereby lowering the resonant frequency of each floor panel 4 and suppressing the transmission of vibrations to the floor beam 8 due to impact forces in a frequency band higher than the resonant frequency of the floor structure 1. This improves the insulation performance of floor impact sounds (hereinafter referred to as "heavy floor impact sounds") having an indicator frequency in the floor structure 1.

[0036] Here, to lower the resonant frequency of the floor panel 4 and efficiently improve the sound insulation performance against heavy floor impact noise, it is better to soften the vibration-damping material 7. However, if the vibration-damping material 7 is compressed beyond its allowable limit by the weight of the floor panel 4 and the load it receives, there is a risk that the sound insulation performance against heavy floor impact noise will not be improved. For this reason, it is necessary to set the softness of the vibration-damping material 7 based on the load it receives and the allowable load of the vibration-damping material 7, which indicates the allowable limit. When the vibration-damping material 7 is softened within a range where the load it receives does not exceed the allowable load, if it exceeds a certain level of softness, a phenomenon occurs in which each of the multiple floor panels 4 vibrates independently with rotation and twisting when an impact is applied to each floor panel 4. When multiple floor panels 4 vibrate individually, the vibration in a predetermined frequency band (octave band center frequency 63Hz), which is an indicator of the sound insulation performance against heavy floor impact noise in the floor structure 1, becomes larger.

[0037] Therefore, multiple floor panels 4 are integrated by connecting them with connecting members 5 inserted into each of the first peripheral connecting grooves 4411 and the first intermediate connecting groove 4421. This integration of multiple floor panels 4 by connecting members 5 suppresses the vibration of the multiple floor panels 4 individually, which involves rotation and twisting. As a result, the sound insulation performance against heavy floor impact noise in the floor structure 1 can be effectively improved.

[0038] As shown in Figure 1, the connecting member 5 has a mounting plate portion 51 that rests on the bottom surface of one of the first grooves 44 and the second groove 45, a pair of side plate portions 52 that rise from each of the two ends of the mounting plate portion 51, and a bent portion 53 that protrudes inward from the upper ends of the pair of side plate portions 52. In this case, the pair of side plate portions 52 have communication holes 521 that communicate with the other second groove 45 of the second groove 45 when the mounting plate portion 51 is resting on the bottom surface of the first groove 44.

[0039] By providing a connecting member 5 having a pair of side plate portions 52 rising from each of the ends of the mounting plate portion 51, the bending strength of the connecting member 5 can be increased. Furthermore, by providing a connecting member 5 that further has bent portions 53 protruding inward from the upper ends of the pair of side plate portions 52, the bending strength of the connecting member 5 can be further increased. As a result, deformation of the connecting member 5 can be suppressed when multiple floor panels 4 are connected and integrated, thereby enhancing the connection effect of the connecting member 5 on multiple floor panels 4.

[0040] As shown in Figure 2, the connecting member 5, when inserted into at least the first edge connecting groove 4411 of the first edge connecting groove 4411 and the first intermediate connecting groove 4421, has a height dimension to restrict upward protrusion from the first edge connecting groove 441 and the first intermediate groove 442 that constitute each connecting groove. In addition, a stepped portion 46 is formed at the upper edge of the first groove 44 and the second groove 45 of the floor panel 4. A cover member 9 is placed on the stepped portion 46 of the floor panel 4 to close the first groove 44 and the second groove 45 from above. The cover member 9 is placed on the stepped portion 46 so as to be flush with the upper surface 43 of the floor panel 4. While placed on the stepped portion 46, the cover member 9 is supported from below by the bent portion 53 of the connecting member 5. Floor finishing material such as carpet tiles is laid on the upper surface 43 of the floor panel 4 and on top of the cover member 9.

[0041] Furthermore, in the connecting member 5, a pair of side plate portions 52 have communication holes 521 that communicate with the second groove 45 when the mounting plate portion 51 is placed on the bottom surface of the first groove 44. When the connecting member 5 is inserted into at least the first edge communication groove 4411 of the first edge communication groove 4411 and the first intermediate communication groove 4421 formed by the communication of the first grooves 44 of each floor panel 4, and the mounting plate portion 51 is placed on the bottom surface of the first groove 44, a plurality of communication holes 521 that communicate with the second groove 45 of each floor panel 4 are formed in each of the pair of side plate portions 52. Each communication hole 521 is formed at an appropriate position in the longitudinal direction of the pair of side plate portions 52 so as to be able to communicate with the second groove 45 of each floor panel 4. In this way, by forming communication holes 521 in a pair of side plate portions 52 in the connecting member 5, it is possible to prevent the communication state of the second groove 45 with respect to the first groove 44 on the upper surface 43 of each floor panel 4 from being blocked by the pair of side plate portions 52. As a result, when the connecting member 5 is inserted into at least the first edge communication groove 4411 of the first edge communication groove 4411 and the first intermediate communication groove 4421, it is possible to prevent a decrease in the degree of freedom of wiring routing using the first groove 44 and the second groove 45.

[0042] As shown in Figure 1, the floor panel unit 2 is equipped with fixing members 6 for fixing connecting members 5 to the floor beams 8. Multiple fixing members 6 are provided corresponding to each of the multiple floor panels 4 that are arranged adjacent to each other on the floor beams 8. Specifically, the fixing members 6 are provided corresponding to each of the pair of first sides 41 of each floor panel 4. In this case, the fixing members 6 fix the connecting members 5, which are inserted into first edge communication grooves 4411 formed by the communication of the first edge grooves 441 of each floor panel 4, to the flanges 81 of each floor beam 8 on which the pair of first sides 41 of each floor panel 4 are arranged.

[0043] The fixing member 6 has a beam mounting portion 61 that is attached to the flange 81 of the floor beam 8, and a fixing portion 62 that extends upward from the beam mounting portion 61 and is fixed to the connecting member 5. With the beam mounting portion 61 attached to the flange 81 of the floor beam 8, the fixing portion 62 is fixed to the connecting member 5 that connects the multiple floor panels 4. This restricts the movement of the floor panels 4 relative to the floor beam 8 in planar directions, including the X-axis and Y-axis directions.

[0044] Furthermore, as shown in Figure 2, the mounting plate portion 51 of the connecting member 5 has a width dimension that allows it to be placed on the bottom surface of the first edge groove 441 while protruding from the floor panel 4 in the direction of the end face facing the second direction D2 of the floor panel 4. In this case, when the mounting plate portion 51 of the connecting member 5 is placed on the bottom surface of the first edge groove 441, a portion of the mounting plate portion 51 protrudes outward from the edge of the first side 41 of the floor panel 4. The portion 511 of the mounting plate portion 51 that protrudes from the floor panel 4 is provided with a fixed portion 5111 to which the fixing portion 62 of the fixing member 6 is fixed. In this case, the fixing portion 62 of the fixing member 6 is made up of, for example, a rod-shaped bolt member with a male thread formed on it, and the fixed portion 5111 of the mounting plate portion 51 is made up of an insertion hole that allows the rod-shaped fixing portion 62 to be inserted.

[0045] In this configuration, with the beam mounting portion 61 attached to the flange 81 of the floor beam 8, the fixing portion 62 is inserted through the fixed portion 5111 provided on the protruding portion 511 of the mounting plate portion 51, and a nut member SC with a female thread is screwed into it, thereby fixing it to the connecting member 5 that connects the multiple floor panels 4. This restricts the movement of the floor panels 4 relative to the floor beam 8 in the planar direction, including the X-axis and Y-axis directions. At this time, a vibration-damping material under the nut may be interposed between the nut member SC and the mounting plate portion 51, and the nut member SC may be screwed into the fixing portion 62. The vibration-damping material under the nut is an elastically deformable member, similar to the vibration-damping material 7 placed between the floor beam 8 and the floor panel 4. By interposing the vibration-damping material under the nut between the nut member SC and the mounting plate portion 51, vibrations in the Z-axis direction of the multiple floor panels 4 connected by the connecting member 5, which is fixed to the floor beam 8 by the fixing member 6, can be suppressed.

[0046] As described above, in the floor structure 1 according to this embodiment, the upper surfaces 43 on which the first grooves 44 and second grooves 45 are formed on the multiple floor panels 4 supported by the floor beams 8 make it possible to create a floor surface that allows for the routing of wiring connected to office automation equipment. In this case, the integration of the multiple floor panels 4 by connecting the connecting members 5 makes it possible to maintain the communication state between the first grooves 44 of each floor panel 4, and also maintains the positional relationship between the second grooves 45 between adjacent floor panels 4. As a result, wiring can be routed freely in the planar direction of the building's floor surface using the first grooves 44 and second grooves 45 formed on the upper surfaces 43 of the multiple floor panels 4, thereby improving the degree of freedom in wiring routing. Furthermore, the integration of the multiple floor panels 4 by the connecting members 5 suppresses the vibration of the multiple floor panels 4 individually accompanied by rotation and twisting. As a result, the sound insulation performance against heavy floor impact noise in the floor structure 1 can be effectively improved.

[0047] [Floor panels and floor panel sets] As described above, the floor panel unit 2 that constitutes the floor surface in the floor structure 1 comprises a plurality of floor panels 4 arranged adjacent to each other. The plurality of floor panels 4 are selected from a plurality of types of floor panels 4A to 4H included in the floor panel set 3 shown in Figure 3. The floor panel set 3 includes a plurality of types of floor panels 4A to 4H specified by the floor panels 4 described above. The plurality of types of floor panels 4A to 4H are classified according to differences in set dimensions defined by the length dimensions of a pair of first sides 41 and a pair of second sides 42. In the plurality of types of floor panels 4A to 4H, the pair of first sides 41 and the pair of second sides 42 have length dimensions that are integer multiples of a standard minimum dimension set as the minimum width dimension of the floor panel in order to constitute the floor surface of the building. The standard minimum dimension is set to, for example, 250 mm.

[0048] In the first type of floor panel 4A, the length dimension L1 of a pair of first sides 41 is set to 1 times the standard minimum dimension, and the length dimension L2 of a pair of second sides 42 is set to 2 times the standard minimum dimension. On the upper surface 43 of the first type of floor panel 4A, a pair of first edge grooves 441 are formed as first grooves 44, arranged along each edge of the pair of first sides 41, and a pair of second edge grooves 451 are formed as second grooves 45, arranged along each edge of the pair of second sides 42. In this case, the groove width dimension W11 of the pair of first edge grooves 441 and the groove width dimension W21 of the pair of second edge grooves 451 are set to the same value (for example, 70 mm).

[0049] In the second type of floor panel 4B, the length dimension L1 of a pair of first sides 41 is set to 1 times the standard minimum dimension, and the length dimension L2 of a pair of second sides 42 is set to 4 times the standard minimum dimension. On the upper surface 43 of the second type of floor panel 4B, a pair of first edge grooves 441 and a single first intermediate groove 442 are formed as first grooves 44, arranged along each edge of the pair of first sides 41, and a pair of second edge grooves 451 are formed as second grooves 45, arranged along each edge of the pair of second sides 42. In the second type of floor panel 4B, the first intermediate groove 442 is positioned in the center of a second direction D2, between the pair of first edge grooves 441, at a distance corresponding to an integer multiple (for example, 2 times) of the standard minimum dimension from each edge of the pair of first sides 41. In this case, the groove width dimension W11 of the pair of first edge grooves 441 and the groove width dimension W21 of the pair of second edge grooves 451 are set to the same value (for example, 70 mm). Also, the groove width dimension W12 of the first intermediate groove 442 is set to twice the value of the groove width dimensions W11 and W21 of each edge groove 441 and 451.

[0050] In the third type of floor panel 4C, the length dimension L1 of a pair of first sides 41 is set to 1 times the standard minimum dimension, and the length dimension L2 of a pair of second sides 42 is set to 6 times the standard minimum dimension. On the upper surface 43 of the third type of floor panel 4C, a pair of first edge grooves 441 and two first intermediate grooves 442 are formed as first grooves 44, arranged along each edge of the pair of first sides 41, and a pair of second edge grooves 451 are formed as second grooves 45, arranged along each edge of the pair of second sides 42. In the third type of floor panel 4C, the two first intermediate grooves 442 are arranged at equal intervals between the pair of first edge grooves 441, with a distance corresponding to an integer multiple (for example, 2 times) of the standard minimum dimension. In this case, the groove width dimension W11 of the pair of first edge grooves 441 and the groove width dimension W21 of the pair of second edge grooves 451 are set to the same value (for example, 70 mm). Furthermore, the groove width dimension W12 of the two first intermediate grooves 442 is set to twice the groove width dimensions W11 and W21 of the respective edge grooves 441 and 451.

[0051] In the fourth type of floor panel 4D, the length dimension L1 of a pair of first sides 41 is set to 1 times the standard minimum dimension, and the length dimension L2 of a pair of second sides 42 is set to 8 times the standard minimum dimension. On the upper surface 43 of the fourth type of floor panel 4D, a pair of first edge grooves 441 and three first intermediate grooves 442 are formed as first grooves 44, arranged along each edge of the pair of first sides 41, and a pair of second edge grooves 451 are formed as second grooves 45, arranged along each edge of the pair of second sides 42. In the fourth type of floor panel 4D, the three first intermediate grooves 442 are arranged at equal intervals between the pair of first edge grooves 441, with a distance corresponding to an integer multiple (for example, 2 times) of the standard minimum dimension. In this case, the groove width dimension W11 of the pair of first edge grooves 441 and the groove width dimension W21 of the pair of second edge grooves 451 are set to the same value (for example, 70 mm). Furthermore, the groove width dimension W12 of the three first intermediate grooves 442 is set to twice the groove width dimensions W11 and W21 of the respective edge grooves 441 and 451.

[0052] The fifth type of floor panel 4E is the same as the first type of floor panel 4A in all other respects, except that the length dimension L1 of the pair of first sides 41 differs from that of the first type of floor panel 4A. In the fifth type of floor panel 4E, the length dimension L1 of the pair of first sides 41 is set to twice the standard minimum dimension.

[0053] The sixth type of floor panel 4F is the same as the second type of floor panel 4B in all other respects, except that the length dimension L1 of the pair of first sides 41 differs from that of the second type of floor panel 4B. In the sixth type of floor panel 4F, the length dimension L1 of the pair of first sides 41 is set to twice the standard minimum dimension.

[0054] The seventh type of floor panel 4G is the same as the third type of floor panel 4C in all other respects, except that the length dimension L1 of the pair of first sides 41 differs from that of the third type of floor panel 4C. In the seventh type of floor panel 4G, the length dimension L1 of the pair of first sides 41 is set to twice the standard minimum dimension.

[0055] The eighth type of floor panel 4H is the same as the fourth type of floor panel 4D except that the length dimension L1 of the pair of first sides 41 differs from that of the fourth type of floor panel 4D. In the eighth type of floor panel 4H, the length dimension L1 of the pair of first sides 41 is set to twice the standard minimum dimension.

[0056] Note that the floor panels 4 included in floor panel set 3 are not limited to the first to eighth types of floor panels 4A to 4H described above. In addition to the first to eighth types of floor panels 4A to 4H, floor panel set 3 may also include the ninth to fourteenth types of floor panels 4I to 4N shown below.

[0057] In the ninth type of floor panel 4I, the length dimension L1 of a pair of first sides 41 is set to 1 times the standard minimum dimension, and the length dimension L2 of a pair of second sides 42 is set to 3 times the standard minimum dimension. On the upper surface 43 of the ninth type of floor panel 4I, a pair of first edge grooves 441 and a single first intermediate groove 442 are formed as first grooves 44, arranged along each edge of the pair of first sides 41, and a pair of second edge grooves 451 are formed as second grooves 45, arranged along each edge of the pair of second sides 42. In the ninth type of floor panel 4I, the first intermediate groove 442 is positioned between the pair of first edge grooves 441 at a distance corresponding to an integer multiple (e.g., 2 times) of the standard minimum dimension from one edge of the pair of first sides 41. In this case, the groove width dimension W11 of the pair of first edge grooves 441 and the groove width dimension W21 of the pair of second edge grooves 451 are set to the same value (e.g., 70 mm). Furthermore, the groove width dimension W12 of the first intermediate groove 442 is set to twice the groove width dimensions W11 and W21 of each edge groove 441 and 451.

[0058] In the tenth type of floor panel 4J, the length dimension L1 of a pair of first sides 41 is set to 1 times the standard minimum dimension, and the length dimension L2 of a pair of second sides 42 is set to 5 times the standard minimum dimension. On the upper surface 43 of the tenth type of floor panel 4J, a pair of first edge grooves 441 and two first intermediate grooves 442 are formed as first grooves 44, arranged along each edge of the pair of first sides 41, and a pair of second edge grooves 451 are formed as second grooves 45, arranged along each edge of the pair of second sides 42. In the tenth type of floor panel 4J, the two first intermediate grooves 442 are arranged between the pair of first edge grooves 441, sequentially from one edge of the pair of first sides 41, at equal intervals corresponding to a length that is an integer multiple (for example, 2 times) of the standard minimum dimension. In this case, the groove width dimension W11 of the pair of first edge grooves 441 and the groove width dimension W21 of the pair of second edge grooves 451 are set to the same value (for example, 70 mm). In addition, the groove width dimension W12 of the two first intermediate grooves 442 is set to twice the value of the groove width dimensions W11 and W21 of each edge groove 441 and 451.

[0059] In the 11th type of floor panel 4K, the length dimension L1 of a pair of first sides 41 is set to 1 times the standard minimum dimension, and the length dimension L2 of a pair of second sides 42 is set to 7 times the standard minimum dimension. On the upper surface 43 of the 11th type of floor panel 4K, a pair of first edge grooves 441 and three first intermediate grooves 442 are formed as first grooves 44, arranged along each edge of the pair of first sides 41, and a pair of second edge grooves 451 are formed as second grooves 45, arranged along each edge of the pair of second sides 42. In the 11th type of floor panel 4K, the three first intermediate grooves 442 are arranged between the pair of first edge grooves 441, sequentially from one edge of the pair of first sides 41, at equal intervals corresponding to a length that is an integer multiple (for example, 2 times) of the standard minimum dimension. In this case, the groove width dimension W11 of the pair of first edge grooves 441 and the groove width dimension W21 of the pair of second edge grooves 451 are set to the same value (for example, 70 mm). In addition, the groove width dimension W12 of the three first intermediate grooves 442 is set to twice the value of the groove width dimensions W11 and W21 of each edge groove 441 and 451.

[0060] The 12th type of floor panel 4L is the same as the 9th type of floor panel 4I in all other respects, except that the length dimension L1 of the pair of first sides 41 differs from that of the 9th type of floor panel 4I. In the 12th type of floor panel 4L, the length dimension L1 of the pair of first sides 41 is set to twice the standard minimum dimension.

[0061] The 13th type of floor panel 4M is the same as the 10th type of floor panel 4J except that the length dimension L1 of the pair of first sides 41 differs from that of the 10th type of floor panel 4J. In the 13th type of floor panel 4M, the length dimension L1 of the pair of first sides 41 is set to twice the standard minimum dimension.

[0062] The 14th type floor panel 4N is the same as the 11th type floor panel 4K in all other respects, except that the length dimension L1 of the pair of first sides 41 differs from that of the 11th type floor panel 4K. In the 14th type floor panel 4N, the length dimension L1 of the pair of first sides 41 is set to twice the standard minimum dimension.

[0063] As described above, the floor panel set 3 includes multiple types of floor panels 4A to 4N, which are classified according to differences in set dimensions defined by the length dimensions of a pair of first sides 41 and a pair of second sides 42. In the multiple types of floor panels 4A to 4N, the pair of first sides 41 and the pair of second sides 42 have length dimensions that are integer multiples of the standard minimum dimension. By constructing a floor surface using multiple types of floor panels 4A to 4N with different set dimensions defined by the length dimensions of a pair of first sides 41 and a pair of second sides 42, it is possible to easily construct floor surfaces of various sizes and shapes, thereby improving the design freedom regarding the size and shape of the floor surface that allows for wiring.

[0064] Here, with reference to Figure 6, we will describe the case in which a rectangular floor surface is constructed using the comparative example floor panel unit 2Z. Figure 6 shows an example of floor panel unit 2Z in which a floor surface is constructed using five types of floor panels 4CZ, 4EZ, 4FZ, 4GZ, and 4HZ, each with different set dimensions defined by the length dimensions of a pair of first sides and a pair of second sides. The length dimensions of a pair of first sides and a pair of second sides of floor panels 4CZ, 4EZ, 4FZ, 4GZ, and 4HZ are set to the same values ​​as the third, fifth, sixth, seventh, and eighth types of floor panels 4C, 4E, 4F, 4G, and 4H included in the floor panel set 3 according to this embodiment.

[0065] However, the floor panels 4CZ, 4EZ, 4FZ, 4GZ, and 4HZ have different formation positions for the first groove 44Z and the second groove 45Z compared to the respective floor panels 4C, 4E, 4F, 4G, and 4H. Specifically, the first groove 44Z and the second groove 45Z of floor panels 4CZ, 4EZ, 4FZ, 4GZ, and 4HZ are not arranged along the edges of a pair of first and second sides. In such a comparative example floor panel unit 2Z, if multiple types of floor panels 4CZ, 4EZ, 4FZ, 4GZ, and 4HZ are arranged adjacent to each other, there is a risk that a region AR will occur at the abutting portion where different types of floor panels meet, where the first groove 44Z and the second groove 45Z are not in communication with each other. If the grooves of multiple floor panels are not in communication with each other, the degree of freedom in routing wiring using the first groove 44Z and the second groove 45Z will be reduced.

[0066] In contrast, the upper surface 43 of the multiple types of floor panels 4A to 4N included in the floor panel set 3 according to this embodiment has a first groove 44 extending along the entire length of a pair of first sides 41 and a second groove 45 extending along the entire length of a pair of second sides 42 and intersecting the first groove 44. In this case, the first groove 44 includes a pair of first edge grooves 441 arranged along each edge of the pair of first sides 41, and the second groove 45 includes a pair of second edge grooves 451 arranged along each edge of the pair of second sides 42. When a floor surface is constructed using the multiple types of floor panels 4A to 4N, each having a first groove 44 including the first edge grooves 441 and a second groove 45 including the second edge grooves 451 formed on its upper surface 43, we will examine the case where the floor panels abut each other in three different patterns. In the following description, the multiple types of floor panels 4A to 4N may be collectively referred to as "floor panel 4".

[0067] In the first butt joint pattern, we assume a case where multiple floor panels 4 are arranged so that the first edges 41 of the floor panels 4 abut against each other. In this case, a butt joint communication groove is formed at the abutting portion of the first edges 41 of the floor panels 4 by combining the first edge grooves 441, and on the upper surface 43 of each floor panel 4, a second edge groove 451 that intersects with the first edge groove 441 extends along the entire length of the second edge 42. As a result, wiring can be freely routed in the planar direction of the floor surface by utilizing the butt joint communication groove formed by combining the first edge grooves 441 at the abutting portion of the first edges 41 of the floor panels 4 and the second edge groove 451 that intersects with the first edge groove 441, thereby improving the degree of freedom in wiring routing.

[0068] In the second butt joint pattern, we assume a case where multiple floor panels 4 are arranged so that the second sides 42 of the floor panels 4 abut against each other. In this case, a butt joint communication groove is formed at the abutting portion of the second sides 42 of the floor panels 4 by the combination of second edge grooves 451, and on the upper surface 43 of each floor panel 4, a first edge communication groove is formed by the first edge grooves 441 intersecting with the second edge grooves 451 communicating through the abutting portion of the second sides 42. As a result, wiring can be freely routed in the planar direction of the floor surface by utilizing the butt joint communication groove formed by the combination of second edge grooves 451 formed at the abutting portion of the second sides 42 of the floor panels 4 and the first edge communication groove formed by the first edge grooves 441 intersecting with the second edge grooves 451, thereby improving the degree of freedom in wiring routing.

[0069] In the third butt joint pattern, we assume a case where the first side 41 of one floor panel 4 and the second side 42 of the other floor panel 4 are butted together in adjacent floor panels 4. In this case, a first edge groove 441 is provided at the butt joint of each floor panel 4 along the edge of the first side 41 of one floor panel 4, and a second edge groove 451 is provided along the edge of the second side 42 of the other floor panel 4. In this case, a butt joint communication groove is formed at the butt joint of each floor panel 4 by the combination of the first edge groove 441 and the second edge groove 451. On the upper surface 43 of one floor panel 4, the second edge groove 451 intersects with the first edge groove 441 and extends along the entire length of the second side 42, while on the upper surface 43 of the other floor panel 4, the first edge groove 441 intersects with the second edge groove 451 and extends along the entire length of the first side 41. This allows wiring to be freely routed in the planar direction of the floor surface by utilizing the abutting communication groove formed by the combination of the first edge groove 441 and the second edge groove 451 formed at the abutting portions of each floor panel 4, the second edge groove 451 that intersects with the first edge groove 441 on the upper surface 43 of one floor panel 4, and the first edge groove 441 that intersects with the second edge groove 451 on the upper surface 43 of the other floor panel 4, thereby improving the degree of freedom in wiring routing.

[0070] The case in which a rectangular floor surface is constructed using multiple floor panels 4 selected from multiple types of floor panels 4A to 4N included in the floor panel set 3 shown in Figure 3 will be explained with reference to Figures 4 and 5. Note that in Figure 5, the first groove 44 and second groove 45 formed on the upper surface 43 of the multiple floor panels 4 are omitted from the illustration, and the positional relationship between the multiple floor panels 4 and the floor beam 8 is shown. Figures 4 and 5 show examples of floor panel units 2 in which a floor surface is constructed using five types of floor panels 4C, 4E, 4F, 4G, and 4H, each with different set dimensions defined by the length dimensions of a pair of first sides 41 and a pair of second sides 42.

[0071] In Figures 4 and 5, one side of the floor surface in the Y-axis direction is composed of three Type 6 floor panels 4F and two Type 5 floor panels 4E.

[0072] The three Type 6 floor panels 4F are arranged adjacent to each other in the X-axis direction such that their second sides 42 abut against each other (second abutting pattern). As a result, abutting communication groove 4511 is formed at the abutting portion of the second sides 42 of the Type 6 floor panels 4F by the combination of the second edge grooves 451, and on the upper surface 43 of each floor panel 4F, the first edge grooves 441 that intersect with the second edge grooves 451 communicate with each other to form a first edge communication groove 4411, and the first intermediate grooves 442 communicate with each other to form a first intermediate communication groove 4421. The three Type 6 floor panels 4F are supported from below by the floor beam 8, with at least one pair of first sides 41 of each panel positioned on the floor beam 8.

[0073] Furthermore, the two fifth-type floor panels 4E are arranged adjacent to each other in the Y-axis direction such that their second sides 42 abut against each other (second abutting pattern). As a result, abutting communication groove 4511 is formed at the abutting portion of the second sides 42 of the fifth-type floor panels 4E by the combination of the second edge grooves 451, and on the upper surface 43 of each floor panel 4E, the first edge grooves 441 that intersect with the second edge grooves 451 communicate with each other to form a first edge communication groove 4411. The two fifth-type floor panels 4E are supported from below by the floor beam 8, with at least one pair of first sides 41 each positioned on the floor beam 8.

[0074] Then, two fifth-type floor panels 4E are arranged adjacent to three sixth-type floor panels 4F in the X-axis direction. In this configuration, the second side 42 of the sixth-type floor panels 4F and the first side 41 of the fifth-type floor panels 4E abut against each other (third abutting pattern). As a result, a butt joint groove 4511 is formed at the abutting portion between the second side 42 of the sixth-type floor panels 4F and the first side 41 of the fifth-type floor panels 4E, formed by the combination of the second edge groove 451 of the sixth-type floor panels 4F and the first edge groove 441 of the fifth-type floor panels 4E.

[0075] Next, in Figures 4 and 5, the central region of the floor surface in the Y-axis direction is composed of two eighth-type floor panels 4H.

[0076] Two Type 8 floor panels 4H are arranged adjacent to each other in the Y-axis direction such that their second sides 42 abut against each other (second abutting pattern). As a result, abutting communication groove 4511 is formed at the abutting portion of the second sides 42 of the Type 8 floor panels 4H by the combination of the second edge grooves 451, and on the upper surface 43 of each floor panel 4H, a first edge communication groove 4411 is formed by the communication of the first edge grooves 441 that intersect with the second edge grooves 451, and a first intermediate communication groove 4421 is formed by the communication of the first intermediate grooves 442. The two Type 8 floor panels 4H are supported from below by the floor beam 8, with at least one pair of first sides 41 of each panel positioned on the floor beam 8.

[0077] Then, the two eighth-type floor panels 4H are arranged adjacent to the three sixth-type floor panels 4F and the two fifth-type floor panels 4E in the Y-axis direction. In this state, the first side 41 of the sixth-type floor panel 4F abuts against the second side 42 of the eighth-type floor panel 4H (third abutting pattern), and the second side 42 of the fifth-type floor panel 4E abuts against it (second abutting pattern). As a result, a butt joint groove 4511 is formed at the abutting portion between the sixth-type floor panel 4F and the fifth-type floor panel 4E corresponding to the second side 42 of the eighth-type floor panel H.

[0078] Next, in Figures 4 and 5, the other side of the floor surface in the Y-axis direction is composed of two third-type floor panels 4C and three seventh-type floor panels 4G. In this case, one third-type floor panel 4C, two seventh-type floor panels 4G, one third-type floor panel 4C, and one seventh-type floor panel 4G are arranged adjacently in the X-axis direction in this order, with their second edges 42 abutting against each other (second abutting pattern). Abutting communication groove 4511 is formed at the abutting portion of the second edges 42 of each floor panel 4C, 4G by combining second edge grooves 451, and on the upper surface 43 of each floor panel 4C, 4G, a first edge communication groove 4411 is formed by first edge grooves 441 intersecting with the second edge grooves 451 communicating with each other, and a first intermediate communication groove 4421 is formed by first intermediate grooves 4421 communicating with each other. Furthermore, the two third-type floor panels 4C and the three seventh-type floor panels 4G are supported from below by the floor beam 8, with at least one pair of first sides 41 each positioned on the floor beam 8.

[0079] Then, the two third-type floor panels 4C and the three seventh-type floor panels 4G are arranged adjacent to the two eighth-type floor panels 4H in the Y-axis direction. In this state, the first sides 41 of the third-type floor panels 4C and the seventh-type floor panels 4G abut against the second side 42 of the eighth-type floor panel 4H (third abutting pattern). As a result, abutting communication groove 4511 is formed at the abutting portion between the third-type floor panels 4C and the seventh-type floor panels 4G corresponding to the second side 42 of the eighth-type floor panel H.

[0080] As explained above, when a rectangular floor surface is constructed using multiple floor panels 4 selected from the various types of floor panels 4A to 4N included in the floor panel set 3 shown in Figure 3, the first groove 44 including the first edge groove 441 and the second groove 45 including the second edge groove 451 of each adjacent floor panel 4 communicate across the entire floor surface. By utilizing these grooves that communicate across the entire floor surface, wiring can be freely routed in the planar direction of the floor surface, thereby improving the flexibility of wiring routing.

[0081] (Variation of floor panel set) Figure 7 shows a modified floor panel set 3A. Like the floor panel set 3 described above, floor panel set 3A includes multiple types of floor panels 4A to 4N. Note that Figure 7 shows the first to eighth types of floor panels 4A to 4H, and the ninth to fourteenth types of floor panels 4I to 4N are not shown. The multiple types of floor panels 4A to 4N included in floor panel set 3A are configured in the same way as floor panel set 3 described above, except that the formation position of the second groove 45 on the upper surface 43 is different. Specifically, on the upper surface 43 of the multiple types of floor panels 4A to 4N included in floor panel set 3A, a pair of first edge grooves 441 are formed as first grooves 44, arranged along each edge of a pair of first sides 41, and a second intermediate groove 452 is formed as a second groove 45, extending along the entire length of the second side 42 at the center of the first direction D1 in which the first side 41 extends.

[0082] Furthermore, the groove width dimension W22 of the second intermediate groove 452 is set to twice the groove width dimension W11 of the first edge groove 441.

[0083] When a floor surface is constructed using multiple types of floor panels 4A to 4N, each having a first groove 44 including a first edge groove 441 and a second groove 45 including a second intermediate groove 452 formed on its upper surface 43, we will examine this by dividing it into three patterns in which the abutting portions where the floor panels meet differ. In the following explanation, the multiple types of floor panels 4A to 4N included in floor panel set 3A may be collectively referred to as "floor panel 4".

[0084] In the first butt joint pattern, we assume a case where multiple floor panels 4 are arranged so that the first edges 41 of the floor panels 4 abut against each other. In this case, a butt joint communication groove is formed at the abutting portion of the first edges 41 of the floor panels 4 by combining the first edge grooves 441, and on the upper surface 43 of each floor panel 4, a second intermediate groove 452 that intersects with the first edge grooves 441 extends along the entire length of the second edge 42. As a result, wiring can be freely routed in the planar direction of the floor surface by utilizing the butt joint communication groove formed at the abutting portion of the first edges 41 of the floor panels 4 and the second intermediate groove 452 that intersects with the first edge grooves 441, thereby improving the degree of freedom in wiring routing.

[0085] In the second butt joint pattern, we assume a case where multiple floor panels 4 are arranged so that the second edges 42 of the floor panels 4 abut against each other. In this case, the first edge grooves 441 of the floor panels 4 are linearly connected through the abutting portion of the second edges 42 of the floor panels 4 to form a first edge communication groove, and on the upper surface 43 of each floor panel 4, a second intermediate groove 452 that intersects with the first edge groove 441 extends along the entire length of the second edge 42. As a result, wiring can be freely routed in the planar direction of the floor surface by utilizing the first edge communication groove formed by the linear connection of the first edge grooves 441 of the floor panels 4 and the second intermediate groove 452 that intersects with the first edge groove 441, thereby improving the degree of freedom in wiring routing.

[0086] In the third butt joint pattern, we assume a case where the first side 41 of one floor panel 4 and the second side 42 of the other floor panel 4 are butted together in adjacent floor panels 4. In this case, a first edge groove 441 is placed along the edge of the first side 41 of one floor panel 4 at the butt joint portion of each floor panel 4. In this case, the first edge groove 441 of one floor panel 4 and the first edge groove 441 of the other floor panel 4 communicate in a perpendicular state to form a communication groove, and a second intermediate groove 452 intersecting the first edge groove 441 extends along the entire length of the second side 42 on the upper surface 43 of each floor panel 4. As a result, wiring can be freely routed in the planar direction of the floor surface by utilizing the communication groove formed by the perpendicular communication of the first edge grooves 441 of each floor panel 4 and the second intermediate groove 452 intersecting the first edge groove 441, thereby improving the degree of freedom in wiring routing.

[0087] The case in which a rectangular floor surface is constructed using multiple floor panels 4 selected from multiple types of floor panels 4A to 4H included in the floor panel set 3A shown in Figure 7 will be explained with reference to Figure 8. Figure 8 shows an example of a floor panel unit 2 in which a floor surface is constructed using five types of floor panels 4C, 4E, 4F, 4G, and 4H, each with different set dimensions defined by the lengths of a pair of first sides 41 and a pair of second sides 42.

[0088] In Figure 8, one side of the floor surface in the Y-axis direction is composed of three Type 6 floor panels 4F and two Type 5 floor panels 4E.

[0089] Three of the sixth type floor panels 4F are arranged adjacent to each other in the X-axis direction such that their second edges 42 abut against each other (second abutting pattern). As a result, the first edge grooves 441 of the sixth type floor panels 4F are linearly connected through the abutting portion of the second edges 42 of the floor panels 4F to form a first edge connecting groove 4411, and the first intermediate grooves 442 are connected to form a first intermediate connecting groove 4421. In addition, on the upper surface 43 of each floor panel 4F, a second intermediate groove 452 intersects with the first edge groove 441 and extends along the entire length of the second edge 42.

[0090] Furthermore, the two fifth type floor panels 4E are arranged adjacent to each other in the Y-axis direction such that their second edges 42 abut against each other (second abutting pattern). As a result, the first edge grooves 441 of the fifth type floor panels 4E communicate linearly through the abutting portion of the second edges 42 of the floor panels 4F, forming a first edge communication groove 4411. In addition, on the upper surface 43 of each floor panel 4E, a second intermediate groove 452 intersects with the first edge groove 441 and extends along the entire length of the second edge 42.

[0091] Then, two fifth-type floor panels 4E are arranged adjacent to three sixth-type floor panels 4F in the X-axis direction. In this state, the second side 42 of the sixth-type floor panel 4F and the first side 41 of the fifth-type floor panel 4E abut against each other (third abutting pattern). As a result, at the abutting portion between the second side 42 of the sixth-type floor panel 4F and the first side 41 of the fifth-type floor panel 4E, the first edge groove 441 of the fifth-type floor panel 4E and the first edge groove 441 and first intermediate groove 442 of the sixth-type floor panel 4F are in perpendicular communication, forming a communication groove 4511.

[0092] Next, in Figure 8, the central region of the floor surface in the Y-axis direction is composed of two eighth-type floor panels 4H.

[0093] Two eighth-type floor panels 4H are arranged adjacent to each other in the Y-axis direction such that their second edges 42 abut against each other (second abutting pattern). As a result, the first edge grooves 441 of the eighth-type floor panels 4H are linearly connected through the abutting portion of the second edges 42 of the floor panels 4H to form a first edge connecting groove 4411, and the first intermediate grooves 442 are connected to form a first intermediate connecting groove 4421. In addition, on the upper surface 43 of each floor panel 4H, a second intermediate groove 452 intersects with the first edge groove 441 and extends along the entire length of the second edge 42.

[0094] Then, the two eighth-type floor panels 4H are arranged adjacent to the three sixth-type floor panels 4F and the two fifth-type floor panels 4E in the Y-axis direction. In this state, the first side 41 of the sixth-type floor panel 4F abuts against the second side 42 of the eighth-type floor panel 4H (third abutting pattern), and the second side 42 of the fifth-type floor panel 4E abuts against it (second abutting pattern). As a result, at the abutting portion between the second side 42 of the eighth-type floor panel H and the first side 41 of the sixth-type floor panel 4F, the first edge groove 441 of the sixth-type floor panel 4F and the first edge groove 441 and first intermediate groove 442 of the eighth-type floor panel 4H are in perpendicular communication, forming a communication groove 4511. Furthermore, at the abutting portion between the second side 42 of the eighth type floor panel H and the second side 42 of the fifth type floor panel 4E, the first intermediate groove 442 and the first edge groove 441 of the eighth type floor panel 4H and the pair of first edge grooves 441 of the fifth type floor panel 4E are in linear communication.

[0095] Next, in Figure 8, the other side of the floor surface in the Y-axis direction is composed of two third-type floor panels 4C and three seventh-type floor panels 4G. In this case, one third-type floor panel 4C, two seventh-type floor panels 4G, one third-type floor panel 4C, and one seventh-type floor panel 4G are arranged adjacently in the X-axis direction in this order, with their second edges 42 abutting against each other (second abutting pattern). As a result, the first edge grooves 441 of each floor panel 4C, 4G are linearly connected to form a first edge connecting groove 4411, and the first intermediate grooves 442 are connected to form a first intermediate connecting groove 4421. In addition, on the upper surface 43 of each floor panel 4C, 4G, a second intermediate groove 452 intersects with the first edge groove 441 and extends along the entire length of the second edge 42.

[0096] Then, the two third-type floor panels 4C and the three seventh-type floor panels 4G are arranged adjacent to the two eighth-type floor panels 4H in the Y-axis direction. In this state, the first sides 41 of the third-type floor panels 4C and the seventh-type floor panels 4G abut against the second side 42 of the eighth-type floor panel 4H (third abutting pattern). As a result, at the abutting portion between the second side 42 of the eighth-type floor panel H and the first sides 41 of the third-type floor panels 4C and the seventh-type floor panels 4G, the first edge grooves 441 of each floor panel 4C and 4G and the first edge groove 441 and first intermediate groove 442 of the eighth-type floor panel 4H are in perpendicular communication, forming a communication groove 4511.

[0097] As explained above, when a rectangular floor surface is constructed using multiple floor panels 4 selected from the various types of floor panels 4A to 4H included in the floor panel set 3A shown in Figure 7, the first groove 44 including the first edge groove 441 and the second groove 45 including the second intermediate groove 452 of each adjacent floor panel 4 communicate across the entire floor surface. By utilizing these grooves that communicate across the entire floor surface, wiring can be freely routed in the planar direction of the floor surface, thereby improving the flexibility of wiring routing. [Explanation of symbols]

[0098] 1 floor structure 2 floor panel units 4 floor panels 41 A pair of first sides 42 A pair of second sides 43 Top surface 44 First groove 441 A pair of first marginal grooves 45 Second groove 451 A pair of second marginal grooves 5 Connecting members 51 Mounting plate section 511 Protruding part 5111 Fixed part 52 Pair of side plates 521 Communication hole 6 Fixing members 61 Beam mounting section 62 Fixed part 8 bed beams D1 Direction 1 D2 Direction 2

Claims

1. A floor panel unit that constitutes the floor surface, A plurality of floor panels having a rectangular planar shape with a pair of first sides extending in a predetermined first direction and a pair of second sides extending in a second direction perpendicular to the first direction, and supported from below by floor beams, The system includes a connecting member for connecting the plurality of floor panels, Each of the multiple floor panels forming the floor surface has a first groove that extends along its entire length in the first direction and opens upward, and a second groove that extends along its entire length in the second direction and opens upward, intersecting the first groove. The plurality of floor panels are arranged adjacent to each other such that the first grooves communicate with each other to form a connecting groove. The connecting member is inserted into the communication groove so as to extend in the longitudinal direction of the communication groove and form an upward-opening space, and is fixed to each of the multiple floor panels, thereby enabling the multiple floor panels to be connected. The connecting member has a mounting plate portion that is placed on the bottom surface of the first groove, and a pair of side plate portions that rise from each of the two ends of the mounting plate portion described above. A floor panel unit in which the pair of side plate portions have communication holes formed in them that communicate with the second groove, with the aforementioned mounting plate portion placed on the bottom surface of the first groove.

2. The system further includes a fixing member for fixing the connecting member to the floor beam, The floor panel unit according to claim 1, wherein the fixing member has a beam mounting portion attached to the floor beam and a fixing portion extending upward from the beam mounting portion and fixed to the connecting member.

3. The first groove includes a first edge groove that is positioned along at least one edge of the pair of first sides and has a shape that opens in the direction of the end face facing the second end face in the floor panel, The mounting plate portion has a width dimension that allows it to be placed on the bottom surface of the first edge groove while protruding from the floor panel in the direction of the end face, The floor panel unit according to claim 2, wherein the portion of the mounting plate that protrudes from the floor panel is provided with a fixed portion to which the fixing portion is fixed.

4. A floor panel unit according to any one of claims 1 to 3, A floor structure comprising: floor beams supporting the plurality of floor panels of the floor panel unit from below.

Images