JP2005105734A - Floor board support structure in double floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To commonly use a support member when fixing a floor board on a support member of a support post and not fixing it. <P>SOLUTION: In this floor board support structure in the double floor, the support member having a receive seat and an insertion part in which a screw hole is formed on an upper face above it and whose diameter is smaller than that of the receive seat is screwed onto a threaded rod erected from a ground contact plate put on a foundation floor, the floor board is supported by the receive seat by inserting a fitting hole formed in a corner part of the floor board into the insertion part by leaving a clearance above it, and a floor board pressing screw is fitted into the fitting hole and is screw-fitted into the screw hole in the insertion part to fix the floor board on the support member. A liner fitted into the insertion part is provided between the floor board and the receive seat. Thickness of the liner is set in such a way that an upper end of the insertion part has substantially the same height as that of an upper face of the floor board when removing it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a floorboard support structure in a double floor in which a floorboard is laid with a certain height from a foundation floor.

  In this type of double floor, four screw rods are erected on a grounding plate placed on the foundation floor, and a support member is screwed to each screw rod. It has the structure which inserts and supports in the fitting hole formed in each corner part. And the unevenness | corrugation of a foundation floor is absorbed by changing the height of each supporting member. In this case, it is preferable from the viewpoint of earthquake resistance that the support member and the floor board are fixed to each other. For this reason, the floor plate pressing screw is fitted into the fitting hole from above the floor plate and screwed into the screw hole formed on the upper surface of the support member.

By the way, it is not necessary to apply the fixing of the floor board to the support member to all the floor boards, and it may be applied only to the floor board at a place where important equipment is placed or walked frequently, and may not be fixed at all. It is because construction cost can be reduced by carrying out like this. In line with this point, Patent Document 1 shows that the floor plate is fixed (FIG. 12) and not fixed (FIG. 25). The floor plate holding screw in this case has a counterbored hole in the floor plate. It is buried in this as a hole and its upper surface is matched with the upper surface of the floor board (in order not to cause a step). Therefore, in the case of non-fixing that does not use the floor plate presser screw, a depressed portion is formed above the support member, and there is a danger that a heel of a high heel falls on the depressed portion.
Registered Utility Model No. 2521136

  In order to solve this problem, it is necessary to prepare two types of support members having different lengths of the portions inserted into the fitting holes in preparation for fixing and not fixing. The present invention solves such a problem, and a single type of support member is sufficient.

  Under the above-described problems, the present invention provides a screw rod erected from a grounding plate placed on a foundation floor according to claim 1, wherein a screw hole is formed on the upper surface of the receiving seat and above the receiving seat. A support member having a small-diameter insertion part and a fitting hole formed in a corner part of the floor board is inserted into the insertion part with a gap above the insertion part to support the floor board in the seat, In a floorboard support structure in a double floor in which a floorboard presser screw is fitted into the fitting hole and screwed into a screw hole of the insertion section to fix the floorboard to the support member, the insertion section is interposed between the floorboard and the seat. The floor board in a double floor is characterized in that a liner fitted to the floor is interposed, and the thickness of the liner is such that when the liner is removed, the upper end of the insertion portion is substantially the same height as the upper surface of the floor board. A support structure is provided.

  As an addition to this configuration, the present invention forms a plurality of concave shapes extending radially on the periphery of the fitting hole on the bottom surface of the floor board according to claim 2, and a plurality of convex strips extending radially on the upper surface of the seat of the support member. The double-floor floor support structure according to claim 1, wherein a plurality of ridges and recesses extending radially are formed on the upper and lower surfaces of the liner, respectively.

  According to the present invention (Claim 1), only one type of support member is sufficient whether or not the floor board is fixed by using (not using) the liner. Therefore, the cost required for manufacturing and managing parts can be reduced. In addition, it is only necessary to set the liner only at the place where the floor board is fixed after installing one type of support member, and the liner should be fixed even when the floor board is fixed or not fixed later. Since it only has to be discarded, it is much easier than changing the support member itself.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of a double floor structure using a double floor support according to the present invention, FIG. 2 is a perspective view of a ground plate and a support member constituting the support, and FIG. 3 is a plan view of the support. The double floor is composed of a ground plate 3 on which four screw rods 1 arranged in a square are erected and placed on the foundation floor 2, a support member 4 screwed on the screw rod 1, and a support member 4 The floor plate 5 is supported by In addition, the grounding plate 3 of this example is provided with a mark or a symbol index 3a for instructing directionality for convenience when the floor plate 5 is laid.

  6 is a front view of the nut holder 7 constituting the support member 4, and FIG. 7 is a cross-sectional view taken along the line BB of FIG. 6. This support member 4 is screwed to the screw rod 1, In the present invention, the support member 4 is composed of a metal hexagon nut (hereinafter referred to as a nut) 6 that is screwed directly onto the screw rod 1 and a resin nut holder 7 that holds the nut 6. In this case, the nut holder 7 is a cylindrical body in which a receiving seat 8 having a large diameter is formed in the middle, and an insertion portion 9 having a small diameter to be inserted into the floor plate 5 is formed on the nut holder 7. 6 is formed with a pocket portion 10 in which the 6 is accommodated.

  An introduction portion 11 communicating with the pocket portion 10 is formed on the side surface of the pocket portion 10, and the nut 6 is inserted into the introduction portion 11 from the lateral direction and is accommodated in the pocket portion 10. . In this, the introduction part 11 and the pocket part 10 have the width | variety of the opposing side of the nut 6, and the nut 6 accommodated in the pocket part 10 through the introduction part 11 is hold | maintained so that rotation is impossible. FIG. 9 is a cross-sectional view taken along the line CC of FIG. 4 showing the introduction portion 11 and the pocket portion 10, and the overhanging protrusion 12 positioned around the corner of the stored nut 6 is formed on the wall surface of the pocket portion 10. The nut 6 once accommodated in the pocket portion 10 is regulated to be pulled out. Therefore, the overpass projection 12 is deformed to allow passage when the nut 6 is inserted, and returns to its original form after passage and functions to restrict extraction. The overpass projection 12 that performs this function is required to be elastic. However, since the nut holder 7 is made of resin, it may be integrally formed in the pocket portion 10.

  Insertion holes 13 for accommodating the screw rod 1 so as to be relatively rotatable are formed above and below the pocket portion 10. When the nut 6 accommodated in the pocket portion 10 is screwed into the screw rod 1, the screw rod 1. Can be taken into the nut holder 7 (insertion hole 13). In this case, the shape of the pocket portion 9 is formed according to the shape of the nut 6 to be inserted, and if the hook 6a shown in FIG. 7 or the like is attached, the nut 6 is prevented from coming off downward. The upward surface 14 is formed with a first upward surface 14a located on the bottom surface of the nut 6 body and a second upward surface 14b located on the bottom surface of the flange 6a.

  In the present invention, the nut 6 housed in the pocket portion 10 has its upper surface pressed against the ceiling surface 15 of the pocket portion 10 so that vertical movement is completely restricted. In order to perform this pressure contact, in the present invention, a protrusion 16 is formed on the upward surface 14. FIG. 8 is a longitudinal sectional view of the nut holder 7 showing a state in which the protrusions 16 are formed on the upward surface 14. The protrusions 16 of this example are the second upper left and right sides of the pocket portion 10 that supports the flange 6a. A ridge 16 a having flexibility is provided on the facing surface 14 b along the insertion direction of the nut 6. Since the nut holder 7 is made of resin, if the ridge 16a is formed integrally with the nut holder 7, it has flexibility.

  In this case, the height of the top of the ridge 16a and the ceiling surface 15 is smaller than the height of the corresponding ridge 6a, and when the ridge 6a of the nut 6 is placed on the ridge 16a, it is deformed (compressed). Or the nut 6 is pressed against the ceiling surface 15. Thereby, the nut 6 is pressed up and down by the upward surface 14 (projection body 16) and the ceiling surface 15 in the pocket part 10, and an up-and-down play is absorbed. A typical deformation of the ridge 16a is that it tilts itself, but since the end of the flange 6a that contacts the ridge 16a is naturally inclined outward, this induces the tilt. The In addition, although illustration is abbreviate | omitted, in order to make this inclination more reliable, it is also considered to form the protrusion 16a inclined beforehand. Further, the protrusion 16 may be one that protrudes in the horizontal direction from the inner surface of the pocket portion 10, as long as the nut 6 can be pressed in the vertical direction.

  The nut holder 7 may be screwed onto the screw rod 1 by first storing the nut 6 in the nut holder 7 and then screwing it onto the screw rod 1, but the wall surface of the insertion hole 13 will be described later. Since the pressure contact portion 27 that presses against the screw rod 1 to prevent the nut holder 7 from being loosened is provided, a rotational resistance is generated between the screw rod 1 and the screw rod 1. Therefore, it is preferable in terms of operation that the nut 6 is screwed into the screw rod 1 in advance and the nut 6 in this state is taken into the nut holder 7. For this reason, a slit groove 17 that communicates with the insertion hole 13 is formed on the side surface below the introduction portion 11 so that the screw rod 1 screwed with the nut 6 can be directly taken in from the side. Since the slit 17 is formed only below the introduction portion 11, the nut 6 must be screwed to the tip of the screw rod 1. However, since the insertion hole 13 continues also above the pocket portion 10, after the screw rod 1 is taken in, the nut holder 7 can be tightened so that the screw rod 1 can be pulled out above the nut 6 ( The position of the nut boulder 7 can be lowered).

  When constructing a double floor, the above operation is performed for all four screw rods 1 provided on one ground plate 3 at the time of factory assembly. At this time, since each nut holder 7 is lowered to a set height, it is only necessary to set the nut holder 7 at the corner portion of the floor plate 5 on which the ground plate 3 is spread. FIG. 4 is a cross-sectional view of the state in which the floor plate 5 is supported by the support columns. When each floor plate 5 is supported by each nut holder 7, the operation is performed by fitting holes 18 formed in the corners of the floor plate 5. It fits in the insertion part 9 of the nut holder 7, and the bottom of the floor board 5 is supported by the seat 8. Since this fitting hole 18 has a counterbore hole on the upper surface side of the floor plate 5, the floor plate pressing screw 19 is fitted into the fitting hole 18 from above the floor plate 5, and is formed at the upper end of the insertion portion 9. Screw into the screw hole 20 and fix.

  A hexagonal engagement hole 21 having a larger diameter than this is also formed above the screw hole 20. When a hexagon wrench or the like is inserted into the engagement hole 21 from the fitting hole 18 and turned, it is turned. The nut holder 7 rotates up and down with respect to the screw rod 1. This operation is performed when the height is adjusted up and down after the floor board 5 is supported. In addition, the surface finish 5a is usually laid on the floor board 5.

  In the case of this example, a liner 22 fitted to the insertion portion 9 is interposed between the floor plate 5 and the receiving seat 8, and the position of the nut holder 7 is lowered relative to the floor plate 5. Although the purpose of the liner 22 will be described later, when such a liner 22 is used, a gap (depression) 28 is generated between the upper end of the insertion portion 9 and the upper surface of the floor board 5. Therefore, the floor plate pressing screw 19 is fitted into the fitting hole 18, and the screw portion is screwed into the screw hole 20 through the gap 28 to fix the floor plate 5 to the nut holder 7. At this time, the depth of the counterbore part of the fitting hole 18 is set so that the upper surface of the head of the floor plate presser screw 19 and the upper surface of the floor plate 5 have substantially the same height. This is because the floor plate pressing screw 19 does not protrude from the floor plate 5 or sink. Strictly speaking, even if the thickness of the floor plate 5 varies due to manufacturing errors, the upper end of the insertion portion 9 and the head of the floor plate pressing screw 19 should not protrude from the floor plate 5. The height is set to be slightly lower (about 0.3 mm in this example).

  By the way, it is not necessary to fix all the floor boards 5 with the floor board presser screws 19, and it is sufficient to fix only important floor boards 5 such as a part of the refuge passage in order to reduce the construction cost. Sometimes. FIG. 5 is a cross-sectional view showing a state in which it is not fixed. In this way, the liner 22 is removed from the non-fixed floor plate 5 and the insertion portion 9 is merely inserted through the fitting hole 18. At this time, since there should be no step between the upper end of the insertion portion 9 and the upper surface of the floor board 5, the thickness of the liner 22 is set equal to the depth of the gap 28 described above.

  It is preferable that the seat 8, the liner 22 and the floor board 5 do not slide relative to each other. This is because when the floor plate presser screw 19 is screwed into the screw hole 20 of the nut holder 7, if the weight of the floor plate 5 is not sufficiently applied to the seat 8, the nut holder 7 may not rotate together and be tightened. It is. On the other hand, if it rotates together, the height of the nut holder 7 will be out of order and the floor board 5 will be loose. Therefore, co-rotation must be avoided.

  FIG. 12 is a partial bottom view of the floor plate 5, and FIG. 13 is a front and back view and front view of the liner 22. In this example, the ridges 23 and 24 are radially formed on the upper surface of the seat 8 and the liner 22. In addition, on the lower surface of the liner 22 and the floor plate 5, recesses 25 and 26 that engage with these protrusions 23 and 24 are formed. According to this, even if the nut holder 7 rotates together, if the ridges 23, 24 and the recesses 25, 26 are aligned, they will engage with each other and will not rotate together. Note that the ridges 23 and 24 and the ridges 25 and 26 may be reversed in their vertical relationship, or may be a convex body or a dent instead.

  When the floor plate 5 is supported by the nut holder 7 screwed on the screw rod 1, it is preferable that the nut holder 7 does not loosen with respect to the screw rod 1 even if a load or the like is repeatedly applied to the floor plate 5. When this is loosened, the nut holder 7 is lowered and a gap is formed between the floor plate 5 and a noise is generated or a fluffy feeling is generated every time the user walks. Therefore, in this example, a pressure contact portion 27 that presses against the screw rod 1 is provided on the wall surface of the insertion hole 13 to prevent loosening.

  10 is a cross-sectional view taken along the line DD in FIG. 4 showing the press-contact portion 27, and FIG. 11 is a cross-sectional view taken along the line EE. In this way, the press-contact portion 27 that press-contacts the screw rod 1 is formed in the insertion hole 13. Is. The press contact portion 27 may be integrally formed with the nut holder 7. Note that the pressure contact portion 27 may be a portion that is in partial pressure contact as in this example, or may be in pressure contact with the entire circumference of the screw rod 1. It is better to adjust the balance with the stopping effect. Furthermore, the height of the pressure contact portion 27 may extend over the entire insertion hole 13 (also above the pocket portion 10) or may be partial.

It is a perspective view of the double floor structure using the support | pillar for double floors. It is a perspective view of a ground plate and a support member. It is a top view of a support | pillar. It is sectional drawing of the floor-plate support by a support | pillar. It is sectional drawing of the floor-plate support by a support | pillar. It is a front view of the nut holder which comprises a support member. It is BB sectional drawing of FIG. It is a longitudinal cross-sectional view of a nut holder. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is EE sectional drawing of FIG. It is a partial bottom view of a floor board. It is the front and back and front view of a liner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Screw rod 2 Foundation floor 3 Grounding plate 3a Index 4 Support member 5 Floor board 5a Surface finishing material 6 Nut 6a 鍔 7 Nut holder 8 Seat 9 Insertion part 10 Pocket part 11 Introduction part 12 Passing protrusion 13 Insertion hole 14 Upward surface 14a 1st upward surface 14b 2nd upward surface 15 Ceiling surface 16 Projection body 16a Projection line 16aa Projection line 16ab Projection line 17 Slot groove 18 Fitting hole 19 Floor plate presser screw 20 Screw hole 21 Engagement hole 22 Liner 23 Projection line (Acceptance)
24 ridge (liner)
25 Concave (Liner)
26 Concave (floorboard)
27 Pressure contact portion 28 Clearance (recessed)

Claims (2)

  A screw rod erected from a ground plate placed on the foundation floor is screwed with a support member having a receiving seat and an insertion portion having a screw hole formed on the upper surface thereof and having a diameter smaller than the receiving seat. Insert the fitting hole formed in the corner part of the insertion part with a gap above the insertion part to support the floor board with the receiving seat, and fit the floor board presser screw into the fitting hole to insert the screw hole of the insertion part In the floorboard support structure in the double floor in which the floorboard is fixed to the support member by being screwed to the liner, a liner fitted to the insertion portion is interposed between the floorboard and the seat, and the thickness of the liner is A floorboard support structure in a double floor, characterized in that the upper end of the insertion portion becomes substantially the same height as the upper surface of the floorboard when the is removed.   In addition to forming a plurality of concave shapes extending radially on the periphery of the mating hole on the bottom surface of the floor plate and forming a plurality of convex strips extending radially on the upper surface of the seat of the support member, a plurality of projections extending radially on the upper and lower surfaces of the liner, respectively. The floor board support structure in the double floor of Claim 1 which formed the strip and the concave strip.