JP2013079529A - Joist unit for low floor and joist bracket used therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joist unit for low floors capable of lowering a double floor structure and a joist bracket used in the joist unit.SOLUTION: A joist bracket 10 which supports a long joist material 20 mounted to a wall of a room includes: a rubber vibration insulator 11 (a floor contacting base) which is disposed on a foundation floor 101; a support bolt 12 vertically supported by the rubber vibration insulator 11; and a support plate 13 having a female screw part 14a engaged with the support bolt 12 and vertically moving according to its rotating operation to adjust the height. In the support plate 13, a joist supporting part 16 which supports the undersurface of the joist material 20 is bent and formed at one end of a screw receiving part 14 formed with the female screw part 14a so as to be located below the screw receiving part 14 through a vertical plate part 15, and a part of the rubber vibration insulator 11 is formed so as to be stored in a void space formed by the back surface of the screw receiving part 14 and the vertical plate part 15.

Description

  The present invention relates to a low floor joist unit used in construction of a double floor structure formed on a foundation floor such as a concrete slab, and a joist support used for the same.

In recent years, a double floor structure has been adopted in many buildings such as apartment houses and office buildings. In this double floor structure, by forming a space between the foundation floor such as a concrete slab and the floor panel, it is possible to improve sound insulation and to provide equipment piping and wiring in the space. It has become.
In the construction of this type of double floor structure, the floor panel is supported by a support leg disposed on the foundation floor and a joist provided on the wall of the room. For example, as described in Patent Document 1 and Patent Document 2, the construction of Tokita joist has a plurality of joist brackets having a receiving member (support plate) whose height can be adjusted to a long joist material. It is done by attaching.

  In Patent Document 1, a joist member is supported by an L-shaped receiving portion, and the height of the joist member can be adjusted up and down, and a screw formed on the foundation floor so as to be rotatable and formed on the receiving member. A joist bracket comprising a support leg portion in which a screw portion that is screwed into a hole is formed has been proposed. In this case, the joist bracket is arranged along the wall while supporting the joist member with the L-shaped receiving portion, and after setting the receiving member to a predetermined floor height, the joist member is attached to the wall with a nail or an adhesive sheet, etc. By using appropriate means, the joist is constructed.

  Patent Document 2 proposes a long joist material formed of a channel material such as metal or synthetic resin instead of wood or the like. A number of through holes are provided on the upper surface of the channel material at predetermined intervals in the longitudinal direction, and the joists are formed so that the height of the joists can be adjusted by fixing the support legs (shoulder brackets) according to the positions of the through holes. Yes. Then, the joists are constructed by fixing the support legs, to which the joists are fixed, on the foundation floor by bonding or fixing brackets.

Japanese Patent No. 3115662 Japanese Patent Laid-Open No. 2002-30787

By the way, in an apartment house etc., in order to secure a wide indoor space, a low floor double floor structure in which the under floor space is narrowed and the floor surface is lowered is desired.
However, as shown in FIG. 15 of Patent Document 1, in the conventional general joist support bracket, a pedestal (flooring pedestal) that supports the support leg is disposed directly under the joist material, and the thickness of the joist material is determined. The construction height of the joists could not be made lower than the total thickness of the flooring pedestal and the thickness.
In addition, the joisting brackets of Patent Document 1 and Patent Document 2 have a configuration in which the floor contact pedestal is installed below the installation height of the joist material, and measures for lowering the floor have not been sufficient.

  This invention is made | formed in view of such a situation, and it aims at providing the joist unit for low floors which can aim at the low flooring of a double floor structure, and the joist metal fitting used for it.

  The present invention is a joist support for supporting a long joist attached to a wall of a room, and is supported on a flooring pedestal disposed on a foundation floor such as a concrete slab, and vertically supported by the flooring pedestal. And a support plate that has a female screw portion that engages with the support bolt and that moves up and down with the rotation of the support bolt and adjusts the height thereof, and the female plate portion is formed on the support plate. At one end of the screw receiving portion, a joist support portion that supports the lower surface of the joist material is bent and formed at a position lower than the screw receiving portion via a vertical plate portion, and the back surface of the screw receiving portion A part of the floor contact pedestal is formed so as to be accommodated in a space formed by the vertical plate portion.

  Further, the low floor joist unit of the present invention comprises a long joist material and a plurality of joist brackets provided at intermediate positions in the length direction of the joist material, It is fixed in a state of being sandwiched between a wall of a room and the vertical plate portion.

In the joist support bracket and the joist unit for low floor, the joist support portion is formed at a lower position than the screw receiving portion, and the floor contact base is formed in the space formed by the back surface and the vertical plate portion of the screw receiving portion. It is possible to reduce the floor of the double floor structure by making it possible to store a part of the floor.
In addition, by loading the joist with the joist material sandwiched between the wall of the room and the vertical plate part of the support plate, the load from above due to heavy objects installed after moving in is installed. The floor panel can be prevented from being deformed by expansion and contraction due to a change in moisture content. Furthermore, since the height adjustment can be performed in a state in which the joist material is fixed to the joist bracket, the joist construction work can be easily performed.

  The present invention is a joist support for supporting a long joist attached to a wall of a room, and is supported on a flooring pedestal disposed on a foundation floor such as a concrete slab, and vertically supported by the flooring pedestal. And a support plate that has a female screw portion that engages with the support bolt and that moves up and down with the rotation of the support bolt and adjusts the height thereof, and the female plate portion is formed on the support plate. A joist support part that supports the lower surface of the joist material is bent at both ends of the screw receiving part so as to be positioned lower than the screw receiving part via a vertical plate part, whereby the screw receiving part is defined as an upper surface. A convex portion is formed, and a part of the floor contact pedestal is formed to be storable in a space formed on the back surface of the convex portion.

  Further, the low floor joist unit of the present invention comprises a long joist material and a plurality of joist brackets provided at mid-positions in the length direction of the joist material, A concave portion capable of accommodating the convex portion of the support plate on the lower surface side and an adjustment hole capable of arranging the upper end portion of the support bolt on the upper surface of the concave portion are provided, and the convex portion of the support plate is provided in the concave portion. While being stored, the lower surface of the joist material is supported by the joist support part.

In this case, the joist support part is formed at a position lower than the screw receiving part of the support plate, and a part of the floor contact pedestal can be stored on the back side of the convex part of the support plate. By providing the concave portion that can store the convex portion, it is possible to reduce the floor of the double floor structure.
In addition, since the joist support is provided by the joist support parts provided on both sides of the screw receiving part, the joist unit for low floor can be made to stand on the foundation floor, and workability at the time of joist construction can be improved. it can. Furthermore, it is possible to cope with a load from above due to a heavy object installed after moving in, and it is possible to prevent the floor panel from being deformed due to expansion and contraction due to a change in moisture content.

In the joist unit for low floor according to the present invention, the joist bracket is made of the joist material in which the head of the support bolt is placed on the joist support portion when the support plate is disposed at the lowest position. It is good to set so that it may become lower than an upper end surface.
In this case, the head of the support bolt is always arranged below the upper end surface of the joist, so there is no worry of touching when laying the floor panel. Workability can be improved.

  According to the present invention, the joist support portion is formed at a lower position than the screw receiving portion of the support plate, and a part of the floor contact base is stored in the space formed by the back surface and the vertical plate portion of the screw receiving portion. Since this is possible, the floor of the double floor structure can be reduced.

It is sectional drawing explaining the double floor structure using the joist unit for low floors of 1st Embodiment of this invention. It is a perspective view of the joisting bracket of FIG. It is a figure explaining the construction method of the joist using the joist unit for low floors of FIG. It is a top view of the floor which shows the double floor structure using the joist unit for low floors of 1st Embodiment of this invention. It is sectional drawing explaining a support leg. It is a top view of the support leg of FIG. It is a perspective view of the joisting bracket of the second embodiment of the present invention. It is sectional drawing explaining the joist unit for low floors of 2nd Embodiment of this invention. It is a figure explaining the construction method of the joist using the joist unit for low floors of FIG.

Hereinafter, an embodiment of a joist unit for low floor using the joist bracket of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 3, the low floor joist unit 1 of the first embodiment includes a long joist member 20 and a plurality of joist brackets 10 provided at intermediate positions in the length direction of the joist member 20. And supporting the joist member 20 by the joist bracket 10 having the support plate 13 capable of adjusting the height, and arranging the joist member 20 along the wall 101 so that the support plate 13 has a predetermined height. By fixing after setting, the joist 100 is constructed.

As shown in FIG. 1 and FIG. 2, the joist bracket 10 includes an anti-vibration rubber 11 (flooring pedestal) disposed on the foundation floor 102, and support bolts 12 supported vertically on the anti-vibration rubber 11. And a support plate 13 that engages with the upper portion of the support bolt 12 and moves up and down as the support bolt 12 rotates.
The anti-vibration rubber 11 is provided in the shape of a truncated cone, and attenuates the impact from the floor panel 103 to suppress the transmission to the foundation floor 102, thereby improving the sound insulation and impact relaxation. A support bolt 12 is rotatably supported by the anti-vibration rubber 11.
A tool insertion groove 12 a into which a Phillips screwdriver or the like can be inserted is formed at the upper end portion of the support bolt 12. By rotating the support bolt 12, the support plate 13 is moved in the vertical direction, The height of joists can be adjusted.

The support plate 13 is positioned at a lower position than the screw receiving portion 14 via the vertical plate portion 15 at one end of the screw receiving portion 14 in which the female screw portion 14a that engages with the male screw portion 12b of the support bolt 12 is formed. As described above, the joist support portion 16 that supports the lower surface of the joist material 20 is bent. The vertical plate portion 15 is separated from the outer peripheral surface of the anti-vibration rubber 11 so that a part of the anti-vibration rubber 11 can be stored in a space formed by the back surface of the screw receiving portion 14 and the vertical plate portion 15. Is formed.
The height h of the screw receiving portion 14 from the joist support portion 16 is formed lower than the thickness t of the joist material 20. The height h of the screw receiving portion 14 may be set to ¼ to ¾ of the thickness t of the joist member 20, and the height t of the joist member 20 and the height h of the screw receiving portion 14 may be set. The difference becomes the adjustment allowance. More preferably, the height h of the screw receiving portion 14 should be about ½ of the thickness t of the joist 20.
Further, the vertical plate portion 15 that connects the screw receiving portion 14 and the joist support portion 16 is formed wider than the screw receiving portion 14 and is formed so as to protrude from both sides of the screw receiving portion 14. The both side portions 17 provided so as to protrude are provided so as to extend upward, and the joists 20 can be stably supported by the both side portions 17. Further, the both side portions 17 are provided with through holes 17a through which fixing members (such as nails or screws) for fixing the joists 20 are passed. Thus, in the support plate 13, by providing both side portions 17 so as to extend upward, the degree of freedom in providing the through holes 17a is improved.

Further, as shown by a two-dot chain line in FIG. 1, when the support plate 13 is disposed at the lowest position, the tip portions of the side portions 17 of the vertical plate portion 15 and the heads of the support bolts 13 are connected to the joist support portion 16. It is set so that it may become lower than the upper end surface of the joist material 20 mounted in. In this case, the head of the support bolt 12 is always disposed below the upper end surface of the joist member 20.
The female screw portion 14a of the screw receiving portion 14 is formed by burring that is bent downward. On the upper surface of the screw receiving portion 14, an adhesive reservoir 18 surrounding the female screw portion 14a is formed in a concave shape that is slightly smaller than the peripheral portion.
The support plate 13 is formed of a metal plate, a plastic plate (polypropylene, nylon, etc.), etc. In this embodiment, for example, a metal plate having a thickness of 2 to 3 mm is used, and is formed by pressing. ing.
The joist support part 16 supports the joist material 20 from below. In the present embodiment, in order to improve the workability at the time of assembling the low floor joist unit 1, a double-sided tape and a release paper (not shown) for temporarily fixing the joist material 20 are provided on the upper surface of the joist support portion 16. Is provided. The double-sided tape and the release paper are provided for the convenience of assembling work, and are not necessarily required when assembling the low floor joist unit.

The joist is constructed using the joist unit 1 for the low floor and the joist bracket 10 configured as described above.
First, the plurality of joisting brackets 10 are fixed to the joist material 20, and the joist unit 1 for low floor is assembled. A plurality of joisting brackets 10 having the support plate 13 set at a predetermined height are erected side by side at regular intervals. Then, the release paper on the surface of the joist support part 16 of each joist bracket 10 is peeled to expose the double-sided tape, and the joist material 20 is placed thereon. Next, a fixing member 19 such as a nail or a screw is driven in from the back surface side of the vertical plate portion 15 of the support plate 13 through the through hole 17a, and the joist bracket 10 is fixed to the joist member 20 to fix the joist unit 1 for the low floor. Configure. At this time, the packing 21 is attached to the attachment surface 20 a of the joist 20 to the wall 101.
The packing 21 is a cushioning material having adhesive surfaces formed on both sides, and attenuates vibration from the floor panel 103 to suppress transmission to the wall 101, thereby improving sound insulation and impact relaxation. . Further, the packing 21 assists the low floor joist unit 1 to stand vertically on the foundation floor 102, and can improve workability at the time of joist construction.

  Next, the joist unit 1 for low floors is disposed along the wall of the room through the packing 21, and the joist material 20 is disposed in a state of being sandwiched between the wall 101 and the vertical plate portion 15. At this time, the tool is engaged with the tool insertion groove 12a of the support bolt 12, and the support bolt 12 is rotated about the axis. Thereby, the support plate 13 can be moved up and down, and the height of the joist from the foundation floor 102 can be finely adjusted to the construction height.

After the height adjustment, the adhesive 6 is supplied to the tip end portion of the support bolt 12 protruding from the support plate 13, and the adhesive 6 is injected into the engagement portion between the support bolt 12 and the female screw portion 14 a of the support plate 13 for support. The bolt 12 is fixed so that the joist height does not fluctuate. As described above, since the concave adhesive reservoir 18 is provided around the female screw portion 14 a of the support plate 13, the adhesive is held in the adhesive reservoir 18, and the support bolt 12 and the support plate 13 are connected to each other. The adhesive 6 can easily enter between the female screw portion 14a.
And the anti-vibration rubber | gum 11 is fixed on the foundation floor 102 with an adhesive etc., and the construction of a joist is finished.

As shown in FIGS. 1 and 4, the double floor structure 110 has a base panel 104 on a joist 100 provided on the wall of the room and a support leg 30 disposed on the foundation floor 102. By arranging the floor panel 103 through the space part 4, the space part 4 is formed between the foundation floor 102 and the floor panel 103.
The support legs 30 that support the floor panel 103 will be described briefly. The support legs 30 are installed on the foundation floor 102 as shown in FIG. The base panel 104 is supported at the edge and at the center of the room away from the joist 100.

For example, as shown in FIG. 5, the support leg 30 supports a vibration isolating rubber 31 disposed on the foundation floor 102, a support bolt 32 supported perpendicularly to the vibration isolating rubber 31, and the base panel 104. And a support plate 33 that engages with the upper portion of the support bolt 32 and moves up and down as the support bolt 32 rotates. By moving the support plate 33 up and down, the base floor of the base panel 104 is formed. The height from 102 can be adjusted.
In the support leg 30 shown in FIG. 5, a cup-shaped protrusion 34 protrudes from the center portion of the support plate 33, and a part of the vibration isolating rubber 31 is formed in a recess 35 that is simultaneously formed on the back side of the protrusion 34. A recess 35 having an inner diameter that is sufficiently larger than the outer diameter of the vibration-proof rubber 31 is formed so as to be housed. Then, as shown in FIG. 6, the base panel 104 can be laid with a certain gap 38 by arranging the side surface of the convex portion 34 of the support plate 33 in contact with the side surface of the base panel 104. it can.
The base panel 104 and the support leg 30 are fixed by driving a self-tapping screw 39 into the support plate 33 from the upper surface side of the base panel 104.

Thus, in the joist bracket 10 and the lower floor joist unit 1 of the present embodiment, the joist support portion 16 is formed at a lower position than the screw support portion 14 of the support plate 13, and the back surface of the screw support portion 14. By making it possible to store a part of the vibration isolating rubber 11 in the space formed by the vertical plate portion 15, it is possible to reduce the floor of the double floor structure. Also, in the support leg 30 used with the low floor joist unit 1, the support plate 33 that supports the base panel 104 is provided with a convex portion 34, and a part of the vibration isolating rubber 31 is stored in the concave portion 35 on the back surface side. By making it possible, the floor of the double floor structure is lowered.
In addition, by installing the joist 100 while fixing the joist material 20 between the wall of the room and the vertical plate portion 15 of the support plate 13, the load from above due to heavy objects installed after moving in The floor panel 103 can be prevented from being deformed due to expansion and contraction due to a change in moisture content. Furthermore, since the height adjustment can be performed in a state where the joist material 20 is fixed to the joist bracket 10, the joist work can be easily performed.
In addition, since the head of the support bolt 12 is always disposed below the upper end surface of the joist member 20, there is no fear of touching when laying the floor panel 103, and work during construction of the double floor structure. It is possible to improve the performance.

Next, the joist bracket and the joist unit for low floor according to the second embodiment of the present invention will be described.
As shown in FIGS. 7 and 8, the support plate 43 of the joisting bracket 40 is lower than the screw receiving portion 44 through the vertical plate portion 45 at both ends of the screw receiving portion 44 in which the female screw portion 44 a is formed. As the joist support portion 46 that supports the lower surface of the joist material 50 is bent so as to be positioned, a convex portion 47 having the screw receiving portion 44 as an upper surface is formed. The convex portion 47 is formed so that a part of the anti-vibration rubber 41 can be stored in a space formed on the back side thereof.
Further, as shown in FIGS. 8 and 9, the joist 50 has a concave portion 51 that can accommodate the convex portion 47 of the support plate 43 on its lower surface side, and an upper end portion of the support bolt 42 on the upper surface of the concave portion 51. An adjustment hole 52 that can be arranged is provided. The convex portion 47 of the support plate 43 is accommodated in the concave portion 51, and the joist material 50 is supported by the joist support portions 46 arranged on both sides of the convex portion 47, thereby configuring the low floor joist unit 2. .
The joist support portion 46 is provided with a through hole 46 a through which a fixing member 19 (such as a nail or a screw) that fixes the joist material 50 to the support plate 43 is passed.

  As in the first embodiment, the joist is constructed by fixing the joist support bracket 40 and the joists 50 and assembling the joist unit 2 for the low floor, and then attaching the joist unit 2 for the low floor through the packing 21. Place along the wall of the room. The low floor joist unit 2 may be assembled in advance before being brought into the construction site. Then, after inserting a tool into the tool groove of the support bolt 42 exposed in the adjustment hole 52 and finely adjusting the height of the joist from the foundation floor 102, the support bolt 42 is fixed with an adhesive. The anti-vibration rubber 41 is fixed on the base floor 102 with an adhesive or the like, and the construction of the joist is finished.

In the joist bracket 40 and the lower floor joist unit 2 of the second embodiment, the joist support portion 46 is formed at a lower position than the screw receiving portion 44 of the support plate 43, and the back side of the convex portion 47 of the support plate 43. In addition, a part of the anti-vibration rubber 41 can be accommodated and a recess 51 capable of accommodating the projection 47 of the support plate 43 is provided on the lower surface of the joist member 50 to reduce the floor of the double floor structure. Can do.
Further, since the joist support 50 is provided by the joist support portions 46 provided on both sides of the screw receiving portion 44, the joist unit 2 for low floor can be self-supported on the base floor 102, and work at the time of joist construction Can be improved.

In addition, this invention is not limited to the thing of the structure of the said embodiment, In a detailed structure, a various change can be added in the range which does not deviate from the meaning of this invention.
For example, as a means for fixing the joist to the wall, a nail or the like may be used in addition to the packing described above.

1, 2 joist unit for low floor 4 space part 6 adhesive 10, 40 joist bracket 11, 31, 41 anti-vibration rubber 12, 32, 42 support bolt 13, 33, 43 support plate 14, 44 screw receiving part 15, 45 Vertical plate portion 16, 46 joist support portion 17 both side portions 18 adhesive reservoir 19 fixing member 20, 50 joist material 21 packing 30 support leg 34 convex portion 35 concave portion 38 gap 39 self tapping screw 51 concave portion 52 adjustment hole 100 joist 101 Wall 102 Base floor 103 Floor panel 104 Base panel 110 Double floor structure

Claims (5)

  A joist support for supporting a long joist attached to the wall of a room, a flooring pedestal disposed on a foundation floor such as a concrete slab, and a support bolt vertically supported by the flooring pedestal, A support plate that has a female screw portion that engages with the support bolt and that moves up and down with its rotational movement to adjust the height, and the support plate is a screw receiving portion on which the female screw portion is formed. A joist support portion that supports the lower surface of the joist material is bent at one end so as to be lower than the screw support portion via the vertical plate portion, and the back surface of the screw support portion and the vertical plate portion A joist bracket, wherein a part of the floor pedestal is storable in a space formed by   A floor joist unit using the joist bracket according to claim 1, comprising a long joist member and a plurality of the jojo support members provided at mid-positions in the length direction of the joist member. The floor joist unit is fixed in a state of being sandwiched between the wall of the room and the vertical plate portion.   A joist support for supporting a long joist attached to the wall of a room, a flooring pedestal disposed on a foundation floor such as a concrete slab, and a support bolt vertically supported by the flooring pedestal, A support plate that has a female screw portion that engages with the support bolt and that moves up and down with its rotational movement to adjust the height, and the support plate is a screw receiving portion on which the female screw portion is formed. At both ends, a joist support portion that supports the lower surface of the joist material is bent so as to be at a position lower than the screw support portion via a vertical plate portion, whereby a convex portion having the screw support portion as an upper surface is formed. A joist bracket that is formed and is formed so that a part of the floor contact pedestal can be stored in a space formed on a back surface of the convex portion.   A floor joist unit using the joist bracket according to claim 3, comprising a long joist member and a plurality of the jojo support members provided at mid-positions in the length direction of the joist member. The joist is provided with a concave portion capable of accommodating the convex portion of the support plate on the lower surface side thereof, and an adjustment hole capable of arranging the upper end portion of the support bolt on the upper surface of the concave portion. A floor joist unit for low floors characterized in that the convex portion of the support plate is housed in the lower surface and the lower surface of the joist material is supported by the joist support portion. The joist bracket is set so that the head of the support bolt is lower than the upper end surface of the joist material placed on the joist support when the support plate is disposed at the lowest position. The joist unit for low floor according to claim 2 or 4, wherein

Images