JP4198417B2 - Double floor structure and double floor construction method using this double floor structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a double floor structure in which a floor board is laid with a certain height from a foundation floor and a required space is secured between the floor and the double floor construction method.
[0002]
[Prior art]
This type of double floor supports the floor board on the foundation floor by a pillar, but this pillar is formed by a single individual (some are integrated with the floor board) and fixed type with a fixed height, There is an adjustable type in which the height can be adjusted by rotating the upper part on which the floor board is placed and the lower part grounded to the foundation floor using screws or the like. Of these, the adjustment type is expensive and requires adjustment operations, but it is suitable for absorbing unevenness, so it can be used for foundation floors with relatively large unevenness and large floors. Often used for building floors.
[0003]
Furthermore, with regard to the adjustable type, one (or one) support type that supports the corners, etc. of the four floor boards that are gathered together with one support, and a four support type that supports the floor boards individually. There is. The former is inexpensive and easy to adjust. However, since the four floor boards move in the same way, it is impossible to adjust each floor board individually. For this reason, when a strict and highly accurate adjustment is required, a four-post type as shown in Japanese Patent Laid-Open No. 2001-49855 is used.
[0004]
[Problems to be solved by the invention]
However, the conventional adjustment type including the preceding example described above is based on the premise that the lower portion of the support column is fixed to the foundation floor with an adhesive or an anchor bolt. Therefore, in order to reconstruct the double floor by changing the layout of the room or the like, it has been necessary to peel off the support from the base floor, which requires much labor. In addition, even after peeling off, extra work was also required to repair the foundation floor damaged by removing the adhesive or the like and forcibly removing the adhesive. This was very inconvenient for the so-called skeleton lending, which has become popular in recent years, when the old borrower is restored to the skeleton state when removed and the new borrower has the preferred double floor.
[0005]
Furthermore, the upper reference height (the upper screw-in depth relative to the lower part) that must be set when laying the floorboard is not clear. Probably, it seems that you set the height of the upper part with respect to the lower part with a scale, or set it with a ruler between the lower part and the upper part, but in any case it is troublesome, the exact initial setting is It ’s hard to do. In particular, in renewals including skeleton lending etc., there are many low floor types with a floor height of about 50 mm (underfloor wiring space height is about 25 mm), so the initial setting is too low and the cable under the floor may be damaged. is there. Moreover, since the adjustment which lowers an upper part (floor board) is also accepted, it may be damaged too much and a cable may be damaged.
[0006]
[Means for Solving the Problems]
Under the above-mentioned problems, the present invention supports each corner portion of the floorboard laid down on the foundation floor according to claim 1 by supporting the lower portion on the foundation floor with the upper portion fixed to the floorboard by the support column , in the post, and a plurality of struts upper supporting a number different corners of the floor plate to be set, screwed to each strut top suspended on the base floor side, a strut lower fitted with common ground plate to the lower end In the double floor structure in which each strut upper part or each strut lower part can be moved up and down by rotating from above the floor board , each strut upper part and strut lower part is The reference height is the state where it hits the lower part of the column and does not lower any further, while a bolt is projected upward in the middle between the upper part of the column at the diagonal position, and a connecting plate with holes formed at both ends and the diameter of the hole at the upper part of the column Receive the formed floorboard It spans in a state where the ascending is restricted by making it smaller than the diameter of the large seat, screwing the floor plate presser from above the floor plate to this bolt, tightening the floor plate to the connecting plate, and fixing it to the foundation floor If some or all of the grounding plate is floating from the foundation floor, rotate the upper part or lower part of the pillar at the floating position to ground the floating grounding plate part to the foundation floor. A double floor structure is provided, which is characterized in that it is configured to be lowered until it is finished.
[0007]
Or more double floor construction method according to the double floor structure is claimed and described in claim 5, the post adjusted to a reference height by screwing maximize the strut top and post bottom floor the center of the ground plane Place it on the foundation floor according to the center position of the corner of the floor, and then perform the operation of supporting the floor board at the top of the support column and fixing it to the upper part of the support column at the specified construction area, and then between the ground plane and the foundation floor. For the upper part or lower part of the column corresponding to the part where the gap is generated, the ground plate part where the gap is generated is grounded to the foundation floor by the rotation operation of the upper part or the lower part of the column from above the floor plate. Will be lowered. That is, the strut is stretched between the floor plate without fixing its lower end to the foundation floor.
[0008]
According to the support used in the support structure for a double floor according to the present invention, the upper part of the support and the lower part of the support are screwed in as much as possible, and the upper part of the support hits the lower part of the support and does not lower any more. is there. Therefore, the state of the reference height is clearly understood, and the operation for setting the reference height is easy. And, as described above, the construction method of the double floor with this support is that the upper part of the support and the lower part of the support are screwed in as much as possible and adjusted to the reference height to support the floor board. The biggest feature is that it is possible to take a uniform and easy-to-understand construction procedure in which the lower part of the support can be lowered until it comes into contact with the foundation floor against the support with a gap between it and the floor. In other words, there is no operation to raise the lower part of the support (lowering the upper part of the support) in principle for the adjustment operation of the support, so the cable is accommodated in the underfloor wiring space height determined by the reference height of the support. As long as this is done, the height will not be lowered too much during the level adjustment or backlash adjustment, and the wiring will not be damaged, or the floor height required for the wiring will not be insufficient. Therefore, adjustment work becomes easy, and even if the underfloor space is a low double floor of about 25 mm, there is no concern that an accident that damages the cable under the floor due to excessive adjustment by level adjustment or backlash adjustment will occur. Therefore, a support structure for a double floor having a very high wiring accommodation performance is obtained.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a double floor structure according to the present invention, and FIG. 2 is a cross-sectional view of a state in which a floor board is laid on a foundation floor by columns constituting the double floor structure. 1 is composed of a column 2 placed on 1 and a floor plate 3 supported by the column. Of these, the column 2 is composed of an upper column 4 and a lower column 5. The lower part 5 of a support | pillar is what the four screw rods 8 stood by square arrangement | positioning from the grounding board 7 which consists of a square flat body with which the shoe 6 of the elastic material was put on the corner.
[0010]
3 is a perspective view of the upper column 4 and the lower column 5, FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3. The upper column 4 is a nut body that is screwed to the screw rod 8, but in this example The nut body includes a metal hexagonal nut 9 that is screwed directly onto the screw rod 8 and a resin nut holder 10 that holds the nut 9 in a non-rotatable manner. In this case, the nut holder 10 is formed with a slot groove 11 having a width that allows the threaded rod 8 to be taken in and out from the side from the middle to the lower end, and is formed at the upper end of the slot groove 11. If the nut 9 is inserted into the wide groove portion from the side, it can be accommodated in the pocket 13 formed in the back through the side introduction path 12 so that it cannot rotate and cannot move up and down. Yes.
[0011]
The outer periphery of the nut holder 10 in the vicinity of the upper portion of the pocket 13 is formed with a large diameter, and the diameter decreases from the middle and continues upward. The boundary between the large-diameter portion and the small-diameter portion is formed as a flat step and serves as a seat portion 14 for receiving the floor plate 3. The small-diameter portion is provided in the corner of the floor plate 3 in the vertical direction. The insertion portion 15 is inserted into the through hole 26. Further, the lower portion of the seat portion 14 is also enlarged in diameter, and the annular fin 16 is directed upward from the seat portion 14 so that the upper end thereof is located above the seat portion 14. The floor plate 3 is supported by these, and details thereof will be described later.
[0012]
The above-mentioned support upper part 4 and support post lower part 5 are assembled by inserting the nut 9 screwed into the upper end of the screw rod 8 together with the screw rod 8 into the slit groove 11 of the nut holder 10 from the side and into the pocket 13. After that, the nut holder 10 is rotated so that the lower end thereof is in contact with the bottom of the screw rod 8. At this time, the seat portions 14 of the nut holders 10 are aligned at positions that are a predetermined length above the lower surface of the ground plate 7, and when this state is reached, the column upper portion 4 and the column lower portion 5 are initially set. It was said. In this respect, if the slit groove 11 is formed in the nut holder 10, the amount of rotation of the nut holder 10 can be reduced and the initial setting operation becomes easy.
[0013]
FIG. 5 is a cross-sectional view of a double floor structure showing another example of the screw rod 8 described above. In this example, the portion below the pocket 13 of the nut holder 10 is eliminated and the screw corresponding thereto is used. The rod 8 is omitted from forming a screw, and the upper end is provided with a flange portion with which the lower end of the nut holder 10 abuts in the initial setting state. Since the upper half of the screw is required, the cost for forming the screw is reduced. However, since the diameter of the lower portion can be increased at the same time, there is an advantage that the rigidity can be increased. In addition, in this example, a locking structure is provided between the nut holder 10 and the screw rod 8.
[0014]
6 is a perspective view of the screw rod 8 and the nut holder 10 showing this loosening prevention structure, and FIG. 7 is a cross-sectional view taken along the line BB of FIG. 6, but a part of the inner peripheral surface of the nut holder 10 below the pocket 13. Protrusions 17 that partially bite into the screws of the threaded rod 8 are formed at (three locations at a pitch of 90 degrees), so that even if vibration is applied to the floor plate 3 or the like, the nut 9, that is, the nut holder 10 is It doesn't rotate up and down. The nut holder 10 shown in FIG. 3 or the like has a similar loosening prevention structure. That is, in addition to the inner peripheral surface below the pocket 13, two upper and lower portions of the inner peripheral surface at the lower end are provided with non-contact portions and are strongly applied, and loosening is prevented by pressing these two locations. In addition, an engagement hole 18 into which a hexagon wrench or the like can be engaged is formed in a portion where the upper end of the screw rod 8 is left over the upper end of the nut holder 10. Further, the outer periphery of this portion is also formed in an engaging portion 19 such as a hexagon, so that a rotating tool of a different type from the engaging hole 18 can be engaged.
[0015]
A connecting plate 20 that is fitted and connected to the nut holder 10 at the diagonal position is stretched over the nut holder 10. The connecting plate 20 is formed with holes 21 at both ends, and is inserted into the screw rod 8 located diagonally with the holes 21 before the nut 9 is taken from the slit groove 11 of the nut holder 10. It is inserted (lowered to the ground plate 7) and inserted from its lower end after the nut holder 10 is mounted. At this time, the connecting plate 20 is restricted by the large-diameter portion below the fins 16 after getting over the minute protrusions protruding from a part of the outer peripheral surface of the nut holder 10, so that it does not come off the nut holder 10. It has become. At the center of the connecting plate 20, a bolt 22 protrudes upward, and a floor plate presser 27 described later can be screwed onto the bolt 22.
[0016]
Next, the construction method of the double floor by the double floor of the above structure is demonstrated. 8 is a plan view of the support column 2 in a state where the connecting plate 20 is stretched over the nut holder 10, FIG. 9 is a sectional view taken along the line CC in FIG. 8, and FIG. 10 is a state where the floor plate 3 is placed on one of the nut holders 10. As shown in the plan view, first, the upper column 4 and the lower column 5 are initially set, and the necessary number of columns 2 in the construction area in a state where the connecting plate 20 is stretched over the nut holder 10 at the diagonal position. Have it ready.
[0017]
By the way, according to this initial setting, the seat portion 14 formed on the nut holder 10 has a minimum height from the foundation floor 1 and is adjusted to the design floor height. In this respect, it can be said that this support column 2 is basically adjusted to lower the grounding plate 7, that is, to adjust the floor height to be higher (of course, to be adjustable to the lower one). Is possible). If the above-mentioned support | pillar 2 is prepared, it will put according to the position of the center of the corner part of the floor board 3 which gathers the center of the support | pillar 2.
[0018]
Next, the floor plate 3 is placed on the seat 14 formed on the nut holder 10. The floor plate 3 used for this double floor is caulked with a space between the upper plate 23 and the lower plate 24. A low step portion 25 with a protruding notch is formed at a corner, and a through hole 26 penetrating vertically according to the position of the nut holder 10 is formed near the center. Therefore, the operation of inserting the through hole 26 into the insertion portion 15 of the nut holder 10 (at this time, the bottom surface of the lower plate 24 is supported by the seat portion 14) is performed on all four floor plates 3. Note that when the floor plate 3 is lowered, the above-described fin 16 reduces the impact, and even if the floor plate 3 described later is loosely tightened and loosens on the seat portion 14, the fin 16 absorbs this backlash. So that no sound is generated.
[0019]
After this state, the floor plate presser 27 is inserted into the lower step portion 25 formed in a circle at the corner portion of the floor plate 3, and the screw (female screw) formed on the floor plate presser 27 is applied to the bolt 22 provided on the connecting plate 20. The floor plates 3 are fastened to the connecting plate 20 by being screwed together. In addition, since the engagement hole 27a is suitably formed in the upper surface of the floor-plate holder 27, what is necessary is just to engage and tighten a rotary tool etc. to this engagement hole 27a. At this time, it is needless to say that the floor plate presser 27 is inserted into the lower step portion 25 with almost no gap, and the upper surface after tightening is set to be flush with the upper surface of the floor plate 3.
[0020]
FIG. 11 is a cross-sectional view showing the state of the double floor after the above operation. If the foundation floor 1 is uneven, a part or all of the grounding plate 7 is lifted from the foundation floor 1. The part of the column 2 is generated. If the floor plate 3 is firmly fixed to the support column 2 without fixing the grounding plate 7 to the foundation floor 1, the floor plate 3 is connected as if it were a single piece, and each floor plate 3 is given rigidity. Even if a gap occurs below the ground plate 7, the floor plate 3 does not fall. If the gap generated between the foundation floor 1 and the ground plate 7 is left as it is, the floor plate 3 sinks or makes a sound each time it walks, so the ground plate 7 is lowered and landed. Is required.
[0021]
Therefore, the nut holder 10 corresponding to the place where the grounding plate 7 floats is searched out (it can be easily understood because the floor plate 3 is lowered when it is put on), and the engagement hole 18 (or the engagement portion 19) is formed with the rotary tool 28. It may be rotated until the grounding plate 7 is landed on the foundation floor 1. At this time, if the shapes of the engagement holes 27a of the floor plate retainer 27 and the engagement holes 18 of the nut holder 10 are the same, the same tool can be used. This operation may be performed on all the nut holders 10 or on some of the nut holders 10 depending on how the gap below the ground plate 7 is generated.
[0022]
By the way, the structure of the floor board presser 27 in FIG. 5 is different from that of the floor board presser 27 in FIG. That is, the floor plate presser 27 is formed with a cam 27b that gradually increases in the circumferential direction at the tip, and a hole 29 is formed in a portion corresponding to the bolt 22 of the connecting plate 20, A cam surface 29 a that receives the cam 27 b is formed around the back surface of the hole 29. Since the cam 27b must pass through the hole 29, the cam 27b may be formed in a rectangular shape or the like so that the cam 27b can pass only when the shape matches. According to this, since it is not necessary to rotate the floor-plate presser 27 many times, there exists an advantage that a fastening operation becomes easy.
[0023]
The above is the basic embodiment of the present invention, but various modifications may be made in addition to the above. One of them is a method of rotating a screw rod described below (not shown). That is, the screw rod is rotatably attached to the ground plate, and an engagement hole is formed on the upper end of the screw rod so that the rotary tool can be engaged by operation from above. Specifically, the lower end of the screw rod is fitted to the ground plate so that it cannot move in the axial direction, but the tolerance of the fitting portion at this time is that even if the screw rod and the ground plate are not perpendicular, Make the screw rod rough enough to rotate.
[0024]
According to this, if the foundation floor is uneven, the screw rod is rotated. At this time, the floor plate is strongly pressed against the seat and has a large frictional resistance. Due to the small frictional resistance, the screw rod rotates preferentially and the grounding plate is lowered. According to the present example, there is an advantage that the operation force is small. If there is a concern about slipping between the seat and the floor board when a part of the grounding plate has landed and the frictional resistance has increased, etc., make sure that the contact surface between the seat and the floor board is non-slip. That's fine.
[0025]
【The invention's effect】
As described above, since the present invention is as described above, the reference height is set such that the upper part of the support and the lower part of the support are screwed in as much as possible and the upper part of the support hits the lower part of the support and is not lowered any further. The state of the height is clearly understood and the operation is easy. And the construction method of the double floor with this support is that the upper part of the support and the lower part of the support are screwed in as much as possible and adjusted to the reference height to support the floor board between the lower support and the foundation floor. It is possible to take a uniform and easy-to-understand construction procedure in which it is only necessary to lower the support struts until they are in contact with the foundation floor. Therefore, as long as the reference height of the support is set to a height that does not damage the cable, there is no situation where the height is lowered too much and the cable is damaged when adjusting the level of the support or rattling.
[Brief description of the drawings]
FIG. 1 is a perspective view of a double floor structure according to the present invention.
FIG. 2 is a cross-sectional view of a double floor structure according to the present invention.
FIG. 3 is a perspective view of the upper part of the support and the lower part of the support according to the present invention.
4 is a cross-sectional view taken along the line AA in FIG. 3. FIG.
FIG. 5 is a cross-sectional view of another example of a double floor structure according to the present invention.
FIG. 6 is a perspective view of a column upper part and a column lower part of another example according to the present invention.
7 is a cross-sectional view taken along the line BB in FIG.
FIG. 8 is a plan view of the nut holder according to the present invention in a state where a connecting plate is spanned.
9 is a cross-sectional view taken along the line CC in FIG.
FIG. 10 is a plan view of a state in which one floor board is placed on the nut holder according to the present invention.
FIG. 11 is a cross-sectional view showing a state where unevenness occurs in the double floor structure according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base floor 2 Column 3 Floor plate 4 Column upper part 5 Column lower part 6 Shoe 7 Grounding plate 8 Screw rod 9 Nut 10 Nut holder 11 Slot groove 12 Introduction path 13 Pocket 14 Seat part 15 Insertion part 16 Fin 17 Protrusion 18 Engagement hole 19 Engaging portion 20 Connecting plate 21 Hole 22 Bolt 23 Upper plate 24 Lower plate 25 Low step portion 26 Through hole 27 Floor plate presser 27a Engaging hole 27b Cam 28 Rotating tool 29 Hole 29a Cam surface

Claims (5)

A plurality of the respective corner portions of the floor plate to be laid on the underlying floor by fixing the upper to the floor by the post and supported in a non-fixed state the lower the baseplate, the posts supporting a number different corners of the floor plate to be set a post top of, screwed to each strut top suspended on the base floor side, as well as constituted by a tower bottom fitted with a common ground plate to the lower end of each strut upper or each strut bottom from above the floor plate In a double floor structure that can be moved up and down by rotating operation, the upper part of each column and the lower column are screwed in as much as possible, and the upper part of the column hits the lower part of the column and does not fall any further, while the diagonal position The connecting plate with a bolt projecting upward in the middle between the upper portions of the columns and having holes at both ends is made smaller in diameter than the diameter of the large seat that receives the floor plate formed at the upper portion of the columns. Ascent is regulated The floor plate is screwed onto the bolt from above the floor plate, and the floor plate is fastened to the connecting plate and fixed. The foundation floor is uneven and part or all of the grounding plate floats from the foundation floor. The double floor structure is characterized in that when it is in a state, the upper part or the lower part of the column in the floating position is rotated so that the floating ground plate part is lowered to the ground floor. . The upper part of the column is screwed into the screw rod that constitutes the lower part of the column, and the nut is held integrally, and an engagement hole is formed to rotate from above the floor plate. double floor structure of claim 1 comprised of preparative nut holder lower end to the support bottom is in contact in a state of screwing maximize. The nut holder has a longitudinal slot with a width that allows the threaded rod to be inserted and removed from the middle to the lower end, and a wider groove than the slot that allows the nut to be inserted from the side at the upper end of the slot. The double floor structure of claim 2 formed. The support of the floor board by the upper part of the support is to insert the insertion part formed in the upper part into the through hole formed in the floor board, and to support the bottom surface of the floor board around the through hole with the seat part formed in the lower part of the insertion part der is, claim 1 to 3 or a double floor structure in which a fin strikes the bottom surface of the floor surface to protrude upward as the upper end around is positioned above the seat of the seat. A double-floor construction method using the double-floor structure according to any one of claims 1 to 4 , wherein the construction method is to attach a strut adjusted to a reference height by screwing the upper part of the strut and the lower part of the strut to the maximum. Place the center of the base plate on the foundation floor in accordance with the center position of the corner of the floor plate, and then perform the operation of supporting the floor plate at the top of the column and fixing it to the top of the column at the specified construction area, For the upper part or lower part of the column that corresponds to the place where a gap is generated between the floor and the foundation floor, the part of the grounding plate where the gap is generated by the rotation operation of the upper part or the lower part of the column from above the floor plate A double-floor construction method with a double-floor structure, characterized in that it is lowered until it contacts the foundation floor.

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