JP3702286B2 - Floor foundation structure - Google Patents

Description

  The present invention relates to a floor foundation structure in a building, and more particularly to a middle and high floor type floor foundation structure.

  For example, as a floor base structure using a metal floor base material, one using a Japanese industrial standard JIS A6519 steel floor base material for gymnasiums is well known.

  Further, a floor base material having a special structure developed for an OA floor such as a computer room is also known.

  Further, what is well known as a floor foundation structure for a general house is that a wooden jack is placed on the underfloor slab, a wooden joist is placed on the jack, and a floor is placed on the wooden joist. There is something that stretches the material. In this case, it is necessary to take countermeasures against termites, but as countermeasures, only measures to immerse chemicals for termite extermination in Daiki and jota.

  However, in the case of the floor base structure using the steel floor base material for gymnasium described above, there is a problem that since it is limited to the gymnasium, it lacks versatility and is generally difficult to spread because of its high cost.

  In addition, for the OA floor, many support members having a complicated structure are interposed between the under-floor slab and the floor material, and the connecting portion between each support member and the floor material is a floor. Since the bottom surface of the material is specially processed to fit the upper end of the support member, the structure becomes complicated, the number of parts and the number of processing steps increase, and there is a problem that costs cannot be increased. is there. Moreover, workability also deteriorates because it takes a lot of time to adjust the height of each support member. In addition, since it is exclusively for the OA floor, there is a problem that it is not versatile and generally difficult to spread.

  Furthermore, when a floor base structure is formed by a combination of wooden pulling and joists, there is a problem that the configuration itself is complicated and the assembly work must be complicated. In addition, there is also a problem that simply immersing chemicals in the wood used is not perfect as a termite countermeasure.

  One of the main reasons why metal floor base materials were not used in ordinary houses is that carpenters do not like the use because of their complicated structure and enforcement method.

  By the way, since it is difficult for people to pass during the construction of the floor base, prolonging the construction period often disturbs other constructions. Accordingly, the shorter the floor construction period, the better. However, in the case of the conventional floor base structure described above, most of the members constituting the floor base can only be assembled on site, and there is a problem that it is difficult to shorten the construction period. In particular, OA floors could only be assembled on site.

  Under the circumstances as described above, there is an increasing expectation for a floor base structure using a metal floor base material that is extremely lightweight and has a simple structure, requires no special technique, and can be constructed at a low cost and in a short construction period.

  The present invention has been made in view of the above points, and is a floor base structure using a floor base material having a very simple structure, which can be easily implemented by a person who does not have a special technique, and has a low cost. The purpose is to make it possible to greatly reduce the construction period and the construction period.

  In the present invention, as a first means for solving the above-described problem, a hollow metal square tube disposed in a parallel state with a predetermined interval between the flooring 1 and the underfloor slab 2 is used. In the floor base structure in which a plurality of floor base materials 3, 3,... And a plurality of supports 4, 4,... Supporting each floor base material 3 with respect to the underfloor slab 2 are provided, The base material 3 is formed by bending a metal plate P cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact with one point of a corner, and folded inward at one end of the metal plate P. While being provided with an inverted J-shaped bent portion 6 that is bent and further bent outward, the other end of the metal plate P is bent in an inverted U-shape on the inside. A corner-shaped connecting portion 5 which is provided with an inverted U-shaped bent portion 7 and which is continuously fitted and crimped, In addition, the support 4 is formed in a U-shaped cross-section so as to hold the lower surface 3b and both side surfaces 3c, 3d of the floor base material 3, and has a screw hole 11 at the bottom center. A cushioning material 12 interposed between the receiving bracket 10 and the floor base material 3, a screw rod 13 screwed into the screw hole 11, and the screw rod 13 are rotatably supported. In addition, the screw base 13 is divided into an upper screw base 45 and a lower screw base 46 each having screw portions 45a and 46a opposite to each other. A screw cylinder 47 having inner and lower screws 47a and 47b for screwing the lower end portion of the upper screw rod 45 and the upper end portion of the lower screw rod 46 to the screw portions 45a and 46a, respectively. Through It has been linked.

  By being configured as described above, the metal plate P cut into a predetermined width is configured to be bent into a rectangular tube shape so that both ends thereof are in contact at one point of the corner, and the metal plate P is formed at one end of the metal plate P. In addition, an inverted J-shaped bent portion 6 is provided which is bent inwardly and further has its tip end bent outwardly, while the other end of the metal plate P has an inverted U-shape inwardly. An inverted U-shaped bent portion 7 that is bent at the bottom is provided, and both are continuously fitted and crimped to form a corner-type connecting portion 5 that is continuous in the longitudinal direction. Since the ground material 3 can be configured, the low-cost, lightweight and robust floor foundation material 3 is obtained, and as a result, a lightweight, robust, low-cost floor foundation structure is obtained.

  In addition, the support tool 4 is configured to have a U-shaped cross-section so as to hold the lower surface 3b and both side surfaces 3c, 3d of the floor base material 3, and a receiving bracket 10 having a screw hole 11 at the bottom center, A cushioning material 12 interposed between the receiving bracket 10 and the floor base material 3, a screw rod 13 screwed into the screw hole 11, and rotatably supports the screw rod 13 and below the floor The screw base 13 is divided into an upper screw base 45 and a lower screw base 46 having screw parts 45a and 46a opposite to each other, and the upper part of the upper part. Via a screw cylinder 47 having upper and lower inner screws 47a and 47b for screwing the lower end portion of the screw rod 45 and the upper end portion of the lower screw rod 46 to the screw portions 45a and 46a, respectively. Are connected , Together can be easily adjust the height of the underfloor member 3 only rotating operation of the screw cylinder 47, there is no need to form a working hole and the like for rotating operating the threaded rod 13 into the underfloor member 3.

  In the present invention, as a second means for solving the above-described problem, in the floor foundation structure provided with the first means, the floor foundation materials 3, 3,. It can also be connected by a channel 32 for anti-fretting perpendicular to 3 ···, and in such a case, the floor substrate 3 and 3 ·· are strengthened from each other, so that the floor substrate structure is robust. Can greatly improve the performance.

  In the present invention, as a third means for solving the above-mentioned problem, in the floor foundation structure provided with the first or second means, the floor material 1 and the floor foundation materials 3, 3,. Can be provided with a plurality of joists 26, 26,... Made of a hollow metal square tube orthogonal to the floor base material 3, 3,. 3,3 .. Since the mutual connectivity is further enhanced, the robustness of the floor base structure can be further greatly improved.

  In the present invention, as a fourth means for solving the above-mentioned problem, in the floor foundation structure provided with the third means, the joist 26 extends in the longitudinal direction and is fixed to the upper surface 26a of each joist 26. It is also possible to form an accommodation groove 30 having a depth that can accommodate the head 29a of the dry-wall screw 29 for this purpose. In this case, the joist 26 can be reduced in weight and strength, The head portion 29a of the dry wall screw 29 for fixing 26 is not exposed on the joist upper surface 26a, so that the floor material 1 is not hindered.

  In the present invention, as a fifth means for solving the above-mentioned problem, in the floor foundation structure provided with the third or fourth means, each joist 26 is cut into a predetermined width by the metal plate P. The metal plate P is bent at one end of the metal plate P so that both ends thereof are in contact with each other at one point of the corner, and the tip is bent outward. On the other end of the metal plate P, an inverted U-shaped bent portion 7 bent in an inverted U shape is provided on the other end of the metal plate P. Both of them can be continuously fitted and pressure-bonded to form a corner-type connecting portion 5 that is continuous in the longitudinal direction. In such a case, the joist 26 can be constituted by a thin metal plate P, so that it is lightweight and A solid and low-cost floor foundation structure can be obtained.

  In the present invention, as a sixth means for solving the above-described problem, in the floor foundation structure including the third or fourth means, a plurality of longitudinally extending side surfaces of each joist 26 are provided. The beads 61, 61,... Can also be formed at predetermined intervals in the longitudinal direction. In such a configuration, the load resistance of the joist 26 is greatly improved, and the one that can withstand the same load can be thinned. In the case of the same wall thickness, the force to withstand the vertical load increases, leading to cost reduction.

  In the present invention, as a seventh means for solving the above-mentioned problems, in the floor foundation structure comprising the first, second, third, fourth, fifth or sixth means, A plurality of beads 60, 60,... That extend in the longitudinal direction can be formed at predetermined intervals in the longitudinal direction on both side surfaces 3c, 3d of the base material 3. As a result, it is possible to reduce the cost by reducing the thickness of the component that can withstand the same load, and by increasing the force that can withstand the vertical load.

  According to the first means of the present invention, a plurality of floor base materials composed of hollow metal square cylinders arranged in a horizontal state with a predetermined interval between the floor material 1 and the underfloor slab 2. 3 and 3 and a plurality of supports 4, 4... For supporting each floor base material 3 with respect to the underfloor slab 2, the floor base material 3 has a predetermined structure. The metal plate P cut into a width is formed by bending into a square tube shape so that both ends thereof are in contact at one point of the corner, and is bent inward at one end portion of the metal plate P, and further its tip An inverted J-shaped bent portion 6 is formed by bending the portion toward the outside, while the other end of the metal plate P is inverted U-shaped by being bent in an inverted U shape on the inside. Since the bent portion 7 is provided and the both are continuously fitted and crimped to form a corner-type connecting portion 5 that is continuous in the longitudinal direction, Since the floor base material 3 can be constituted by the metal plate P, the light and strong floor base material 3 can be obtained at a low cost. As a result, a light, strong and low-cost floor base structure can be obtained. Since the floor base material 3 made of P is used, there is an effect that it is extremely useful as a termite countermeasure.

  In addition, the support tool 4 is configured to have a U-shaped cross-section so as to hold the lower surface 3b and both side surfaces 3c, 3d of the floor base material 3, and a receiving bracket 10 having a screw hole 11 at the bottom center, A cushioning material 12 interposed between the receiving bracket 10 and the floor base material 3, a screw rod 13 screwed into the screw hole 11, and rotatably supports the screw rod 13 and below the floor The screw base 13 is divided into an upper screw base 45 and a lower screw base 46 each having screw portions 45a and 46a opposite to each other. The lower end portion of the flange 45 and the upper end portion of the lower screw rod 46 are connected via a screw cylinder 47 having upper and lower inner screws 47a and 47b respectively screwed into the screw portions 45a and 46a. Since the screw cylinder 7 is effective in that the height of the floor base material 3 can be easily adjusted only by the rotational operation 7, and it is not necessary to form a working hole or the like for rotating the screw rod 13 in the floor base material 3. . Moreover, the floor material 1 can be obtained by arranging the floor base materials 3, 3,... Supported by the plurality of supports 4, 4,. Since the leveling surface (in other words, the upper surface 3a of the floor base material 3) can be easily leveled, a solid floor base structure can be obtained with an extremely simple configuration and work. An operator (for example, a carpenter) who does not have a work can easily and inexpensively perform construction, and the leveling operation of the extending surface of the flooring material 1 (in other words, the upper surface 3a of the floor base material 3) is extremely easy. effective. Moreover, there is an effect that it has versatility that can be adopted not only for special floor structures but also for ordinary houses.

  In addition, a lot of space is maintained between the floor base materials 3, 3, and so on under the floor, so that additional work (for example, laying insulation, plumbing for waterworks, wiring for electrical work, floor heating, etc.) There is also an advantage that installation etc. can be performed very easily.

  As in the second means of the present invention, in the floor foundation structure provided with the first means, the floor foundation materials 3, 3,... It can also be connected by a channel 32, and in such a case, since the mutual connectivity of the floor base material 3, 3, ... is strengthened, the robustness of the floor base structure can be greatly improved. it can.

  As in the third means of the present invention, in the floor foundation structure provided with the first or second means, the floor foundation material is interposed between the floor material 1 and the floor foundation materials 3, 3. It is also possible to interpose a plurality of joists 26, 26,... Made of hollow metal square tubes orthogonal to 3, 3,. Since the property is further enhanced, the robustness of the floor foundation structure can be further greatly improved.

  As in the fourth means of the present invention, in the floor foundation structure provided with the third means, the dry wall screw 29 for extending the longitudinal direction and fixing the joist 26 to the upper surface 26a of each joist 26 is provided. An accommodation groove 30 having a depth capable of accommodating the head 29a can be formed. In such a case, the joist 26 can be reduced in weight and strength, and a dry wall for fixing the joist 26 can be used. The head 29a of the screw 29 is not exposed on the joist upper surface 26a, so that the flooring 1 is not hindered.

  As in the fifth means of the present invention, in the floor foundation structure provided with the third or fourth means, each joist 26 is a metal plate P cut into a predetermined width at both ends at one corner. Inverted J-shape, which is formed by bending into a rectangular tube shape so as to be in contact with each other, bent at one end of the metal plate P, and bent further toward the outside. While the bent portion 6 is provided, the other end portion of the metal plate P is provided with an inverted U-shaped bent portion 7 which is bent in an inverted U shape on the inside, and the both are continuously fitted and crimped. It can also be formed as a corner-type connecting portion 5 which is continuous in the longitudinal direction, and in such a case, the joist 26 can be constituted by the thin metal plate P, so that the floor base structure is lightweight, robust and low cost. Is obtained.

  As in the sixth means of the present invention, in the floor foundation structure provided with the third or fourth means, a plurality of beads 61, 61,. In such a configuration, the load resistance of the joist 26 is greatly improved, so that it can be made thinner if it can withstand the same load, and it can be reduced in the vertical direction if it has the same thickness. Increased force to withstand directional loads leads to cost reduction.

  As in the seventh means of the present invention, in the floor foundation structure provided with the first, second, third, fourth, fifth or sixth means, both side surfaces 3c, In 3d, a plurality of beads 60, 60,... Extending in the longitudinal direction can be formed at predetermined intervals in the longitudinal direction, and when configured in such a manner, the load resistance of the floor base material 3 is greatly improved. The one that can withstand the same load can be thinned, and the one that has the same thickness can increase the force to withstand the vertical load, thereby reducing the cost.

  Hereinafter, several preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 4 show a floor foundation structure according to a first embodiment of the present invention.

  As shown in FIGS. 1 to 4, this floor foundation structure is arranged in a parallel state between a flooring 1 and an underfloor slab (concrete slab in the present embodiment) 2 at a predetermined interval. Interposing a plurality of floor base materials 3 made of hollow metal square cylinders and a plurality of supports 4, 4... For supporting each floor base material 3 with respect to the under-floor slab 2 It is comprised by. In the case of the present embodiment, a joist 26 orthogonal to the floor base material 3 is interposed between the floor material 1 and the floor base material 3.

  As shown in FIG. 2, the floor base material 3 is formed by bending a metal plate P cut into a predetermined width into a square tube shape so that both ends thereof are in contact at one corner. One end portion of P is provided with an inverted J-shaped bent portion 6 which is bent inward and further bent at the front end portion toward the outside, and the other end portion of the metal plate P is provided. Is provided with an inverted U-shaped bent portion 7 which is bent in an inverted U shape on the inside, and is formed as a corner-type connecting portion 5 which is continuously fitted and crimped to be continuous in the longitudinal direction. ing. And this floor base material 3 is arrange | positioned so that the corner type | mold connection part 5 may be located below, and the upper surface 3a is used as the extending | stretching surface of the flooring 1. As shown in FIG. If comprised in this way, since the floor base material 3 can be comprised with the thin metal plate P, while being able to obtain the lightweight, robust and low-cost floor base structure, the upper surface 3a of the floor base material 3 can be used effectively. become.

  Each support 4 is configured to have a U-shaped cross-section upward to hold the lower surface 3b and the left and right side surfaces 3c, 3d of the floor base material 3, and a receiving bracket 10 having a screw hole 11 at the bottom center, A cushioning material 12 interposed between the receiving bracket 10 and the floor base material 3, a screw rod 13 screwed into the screw hole 11, and rotatably supports the screw rod 13 and below the floor It is comprised by the metal base 14 fixed to the slab 2. As shown in FIG. The screw hole 11 is formed on the inner peripheral surface of a cylindrical portion 10 a that protrudes downward from the center of the bottom of the metal fitting 10. The buffer material 12 is configured in the same shape as the metal fitting 10 by hard synthetic rubber or the like.

  The screw rod 13 is divided into an upper screw rod 45 and a lower screw rod 46 having screw portions 45a and 46a opposite to each other, and a lower end portion of the upper screw rod 45 and an upper end portion of the lower screw rod 46. Are connected through screw cylinders 47 having upper and lower inner screws 47a and 47b respectively screwed into the screw portions 45a and 46a. An intermediate portion in the vertical direction of the screw cylinder 47 is formed in a shape recessed from both sides, and is a tool gripping portion 48 that is gripped by an appropriate tool. In the screw cylinder 47, the inner diameter between the upper and lower inner screws 47a and 47b is larger than the upper and lower screw rods 45 and 46. As a result, the upper and lower screw rods 45 and 46 connected via the screw cylinder 47 are prevented from wobbling. Reference numeral 50 denotes a nut for fixing the screw cylinder 47.

  The metal base 14 has a rectangular shape, and a lower end portion of the screw rod 13 (specifically, a lower end portion of the lower screw rod 46) is screwed into a screw portion 49 formed at the center thereof. It is worn. The shape of the metal base 14 is not limited to a rectangle, and may be a round shape. Reference numerals 24 and 25 are nuts to be screwed onto the screw rod 13, and the nut 24 is brought into contact with the lower end of the cylindrical portion 10 a of the receiving bracket 10 to prevent the movement of the receiving bracket 10. It abuts on the upper surface of.

  In the drawing, 27 is a dry wall screw for connecting the metal fitting 10 to the floor base material 3 together with the cushioning material 12, 28 is a concrete pin for connecting the metal base 14 to the underfloor slab 2, 59 is a dry wall screw. 27 is a hole for inserting 27.

  Next, with reference to FIG. 2 and FIG. 3, the assembly procedure of the support tool 4 in this Embodiment is demonstrated.

  First, the lower end of the lower screw rod 46 is screwed to the screw portion 49 of the metal base 14 to connect the metal base 14 and the lower screw rod 46, and then the nut 25 is screwed to the lower screw rod 46. Then, the lower screw rod 46 is held upright by contacting the upper end of the screw portion 49. The nut 50 is screwed into the lower screw rod 46 in this state and positioned at a predetermined position, and then the lower portion of the screw cylinder 47 is screwed until it comes into contact with the nut 50. Thereafter, the lower end portion of the upper screw rod 45 is screwed to the upper portion of the screw cylinder 47, and the nut 24 is screwed from the upper portion of the upper screw rod 45 to the upper portion of the screw hole 11 of the bracket 10. By assembling the upper end of the screw rod 45, the assembly of the support 4 is completed. Note that the metal fitting 10 and the buffer material 12 are attached in advance to a predetermined position of the floor base material 3 by the dry wall screw 27.

  Further, the joist 26 is for reinforcing the connectivity of the floor base material 3, 3... And is constituted by a hollow metal square tube having the same configuration as the floor base material 3. However, it is assumed to be the same as or smaller in size than the floor base material 3. On the upper surface 26a of the joist 26, receiving grooves 30 and 30 having a depth capable of receiving the head 29a of the dry wall screw 29 for fixing the joist 26 to the floor base material 3 are continuous in the longitudinal direction. Is formed. By doing in this way, head 29a of drywall screw 29 will not be exposed from joist upper surface 26a, and it will not become a hindrance at the time of laying flooring 1 on joist upper surface 26a. Note that only one receiving groove may be formed. Reference numeral 31 denotes an interposed buffer plate between the joist 42 and the floor base material 3.

  Next, the procedure for assembling the floor foundation structure according to this embodiment will be described.

  First, the bracket 10 together with the cushioning material 12 is attached in advance to the predetermined position of the floor base material 3 by the dry wall screw 27, and then the support 4 assembled by a predetermined procedure (that is, the screw rod 13 and the metal The upper screw rod 45 of the base 14) is screwed into the screw hole 11 of the bracket 10 to complete the preparation (see FIG. 4). At this time, the nuts 24 and 25 are loosened.

  Thereafter, the support members 4 and 4 positioned at both ends of the floor base material 3 are fixed to the under-floor slab 2 by the concrete pins 28, and then the intermediate support members 4, 4. Fix it sequentially. Next, the height of the floor base material 3 is adjusted by rotating the screw cylinder 47 in a state in which the nut 50 is loosened, and moving the upper screw rod 45 and the lower screw rod 46 in directions away from each other. Then, the nuts 24, 25, 50 are fastened and fixed. That is, since this height adjustment is performed only by rotating the screw cylinder 47, the height of the floor base material 3 can be easily adjusted and the screw rod 13 can be rotated on the floor base material 3. There is no need to form work holes.

  By performing the above construction on the plurality of floor base materials 3, 3,..., The plurality of floor base materials 3, 3,. Thereafter, if the joists 26, 26,... Are fixed to the floor base materials 3, 3,. The geological structure is completed.

  The floor foundation structure obtained as described above can be completed with an extremely simple structure and operation, and is robust and low-cost. Workers who do not have special techniques (for example, carpenters) can perform construction easily and at low cost, and the leveling work of the tensioning surface of the flooring 1 (in other words, the upper surface 3a of the floor base material 3) is extremely easy. Moreover, even a worker who does not have special technology (for example, a carpenter) can easily perform the construction. Moreover, it has versatility that can be used not only for special floor structures but also for ordinary houses.

  Moreover, since the metal floor base material 3 is used, it is extremely useful as a termite countermeasure.

  In addition, since a lot of space is maintained between the floor base materials 3, 3 ... under the floor, it is necessary to carry out incidental work (for example, laying insulation, piping for waterworks, wiring for electrical work, floor heating, etc.) Installation etc.) can be done very easily.

Second Embodiment FIGS. 5 and 6 show a floor foundation structure according to a second embodiment of the present invention.

  In this case, in order to reinforce the mutual connectivity of the floor base materials 3, 3..., The floor base materials 3, 3... Are replaced with the joists 26 in the first embodiment. , 3... Are connected by a channel 32 for anti-fretting that is orthogonal to.

  Next, a connection structure between the floor base material 3 and the channel 32 will be described.

  A cutout opening 33 having a channel fitting groove 34 for fitting the channel 32 on one end side and a cutout opening 35 facing the cutout opening 33 at the center of the left and right side surfaces 3c and 3d of the floor base material 3 are provided. Are formed respectively.

  The notch opening 33 is formed at one end thereof and has a channel fitting groove 34 having a width substantially the same as the vertical width of the channel 32 (that is, a width in which the fitted channel 32 is not allowed to move in the vertical direction); The rectangular opening 36 is continuous with the channel fitting groove 34 and is larger than the vertical width of the channel fitting groove 34 and has an opening area capable of changing the posture of the channel 32 from the horizontal direction to the vertical direction. It is preferable that the depth of the channel fitting groove 34 is deeper than the height of the channel 32 in order to cope with manufacturing errors of the channel 32.

  On the other hand, the notch opening 35 has locking mouth edges 37, 37 extending in the longitudinal direction of the floor base material 3 from the upper and lower ends of the bottom surface 35 a located on the same line as the bottom surface 34 a of the channel fitting groove 34 in the notch opening 33. The locking mouth edges 37 and 37 are tapered so that they face each other at a larger interval than the vertical width of the channel fitting groove 34 and the relative width becomes narrower toward the notch opening bottom surface 35a. Further, a wide opening 39 for inserting inwardly projecting pieces 41 and 41 in a regulation fitting 38 to be described later is formed on the opposite bottom side of the locking mouth edges 37 and 37. The width of the wide opening 39 is larger than that of the rectangular opening 36 of the notch opening 33.

  The restricting bracket 38 restricts the horizontal movement of the channel 32 by applying a pressing force to the end face of the channel 32 in a state of being fitted and positioned in the channel fitting groove 34. A rectangular regulating bracket main body 40 having an abutting surface 40a that abuts against the channel 32, and a part of the upper and lower portions of the regulating bracket main body 40 at a position closer to the side opposite to the abutting surface than the abutting surface 40a. Inwardly convex pieces 41, 41 cut and raised in the direction, and an operation part 42 bent at a right angle in a direction opposite to the inwardly convex pieces 41, 41 from the end portion on the side opposite to the abutment surface of the restriction metal main body 40. And have. The inwardly convex pieces 41, 41 are engaged with the engagement mouth edge 37, 37 by the clamping force between the engagement with the inner surface of the engagement mouth edge 37, 37 and the engagement with the engagement mouth edge 37, 37 of the restricting fitting main body 40. Locking of the restricting metal fitting 38 to 37, 37 is to be obtained.

  The operation portion 42 is for facilitating a pressing operation by a finger with the finger when the restriction fitting 38 is locked to the locking mouth edges 37, 37. The position where the inwardly projecting pieces 41 and 41 are formed and the length of the locking mouth edges 37 and 37 are such that the contact surface 40a of the restricting fitting main body 40 of the restricting fitting 38 is in contact with the end face of the channel 32. Of course, it is set so that both can maintain the engaged state.

  Further, a stopper 43 for restricting the horizontal movement of the restricting fitting 38 by applying a pressing force to the operation portion 42 of the restricting fitting 38 is integrated with the end portion of the notch opening 35 on the side opposite to the channel fitting groove. Is provided. The stopper 43 is a tongue-shaped piece extending from the corner of the notch opening 35 on the side opposite to the channel fitting groove toward the center, and before the mounting of the regulation fitting 38, the stopper 43 The flat state is maintained, and after the mounting of the restricting metal fitting 38, it can be bent from an appropriate position in a right-angled outward direction so that a pressing force can be applied to the operating portion 42 of the restricting metal fitting 38. The surface of the stopper 43 that faces the operation portion 42 is a tapered surface 43a that is inclined toward the operation portion 42 from the free end toward the fixed end. Needless to say, an interval is formed between the fixed end side of the stopper 43 and the locking mouth edge 37 so that the inwardly projecting pieces 41 and 41 of the restricting fitting 38 can be inserted.

  If it does in this way, the control force provision by the stopper 43 will be obtained only by making it bend after the attachment of the restriction metal 38, and it will not interfere with the attachment of the restriction metal 38. In addition, the position where the stopper 43 and the regulating bracket 38 are in contact with each other can be set as the bending position, and even if there is a manufacturing error in the channel 32 and the regulating bracket 38, the bending position is determined accordingly. It is possible to more reliably obtain the regulatory power given by.

  As described above, when the floor base materials 3, 3,... Are firmly connected by the channel 32, the mutual connection between the floor base materials 3, 3,. Will be obtained.

  In the case of the present embodiment, the floor material 1 is stretched directly on the floor base materials 3, 3,.

  Other configurations and operational effects are the same as those in the first embodiment, and thus description thereof is omitted.

Third Embodiment FIG. 7 shows a floor foundation structure according to a third embodiment of the present invention.

  In this case, the difference from the first embodiment (shown in FIGS. 1 to 3) is that the tool gripping portion 48 of the screw cylinder 47 is in a square shape, and the upper screw rod 45 is below the floor. This is a point that protrudes inward of the base material 3.

  In the present embodiment, in order to have a structure in which the upper screw rod 45 protrudes inward of the floor base material 3, a part of the cushioning material 12 in the support 4 (ie, the lower surface 3 b of the floor base material 3 (that is, A circular insertion hole 9 for inserting the cylindrical convex portion 15) is formed corresponding to the screw hole 11.

  A cylindrical convex portion 15 corresponding to the screw hole 11 and having a through hole 16 having a slightly larger diameter than the screw hole 11 is integrally formed at the center of the bottom of the cushioning material 12. The cylindrical convex portion 15 is inserted into the insertion hole 9 formed in the lower surface 3b of the floor base material 3 when the cushioning material 12 is attached, and restricts the movement of the cushioning material 12 and also includes the screw rod 13 and the underfloor. Friction with the base material 3 (specifically, the screw thread penetrating portion) is avoided to prevent floor scumming.

  Also in this case, it is a matter of course that the floor base materials 3, 3... May be connected by the joist 26 or the channel 32. Since other configurations and operational effects are the same as those in the first embodiment, description thereof will be omitted.

Fourth Embodiment FIGS. 8 and 9 show a floor foundation structure according to a fourth embodiment of the present invention.

  In this case, the difference from the first embodiment (shown in FIGS. 1 to 3) is that a plurality of beads 60 extending in the vertical direction on both side surfaces 3c and 3d of the floor base material 3 and both side surfaces of the joist 26, .. And 61, 61... Are only formed at predetermined intervals in the longitudinal direction. In the present embodiment, the beads 60, 60,..., 61, 61,... Are formed at substantially equal intervals in the longitudinal direction over the entire area of the floor base material 3 and the joists 26. With this configuration, the load bearing capacity of the floor base material 3 and the joist 26 is greatly improved, so that a material that can withstand the same load can be made thinner, and a material that has the same thickness can withstand a vertical load. Leads to cost reduction. Since other configurations and operational effects are the same as those in the first embodiment, description thereof will be omitted.

Fifth Embodiment FIG. 10 shows a floor foundation structure according to a fifth embodiment of the present invention.

  In this case, the second embodiment (shown in FIGS. 5 and 6) is different from the second embodiment in that the plurality of beads 60, 60,. Only points formed at predetermined intervals. In the present embodiment, the beads 60, 60,... Of the floor base material 3 are formed at substantially equal intervals in the longitudinal direction, avoiding the portions where the cutout openings 31, 33 are formed. By configuring in this way, the load bearing capacity of the floor base material 3 is greatly improved, so that a material that can withstand the same load can be thinned, and a material that has the same thickness can increase the force to withstand a vertical load. This leads to cost reduction. Since other configurations and operational effects are the same as those in the second embodiment, description thereof will be omitted.

Sixth Embodiment FIG. 11 shows a floor foundation structure according to a sixth embodiment of the present invention.

  In this case, the third embodiment (shown in FIG. 7) is different from the third embodiment (shown in FIG. 7) in that a plurality of beads 60, 60... Extending vertically on both side surfaces 3 c and 3 d of the floor base material 3 and both side surfaces of the joist 26. And 61, 61,... Are only formed at predetermined intervals in the longitudinal direction. In the present embodiment, the beads 60, 60,..., 61, 61,... Are formed at substantially equal intervals in the longitudinal direction over the entire area of the floor base material 3 and the joists 26. With this configuration, the load bearing capacity of the floor base material 3 and the joist 26 is greatly improved, so that a material that can withstand the same load can be thinned, and a material that has the same thickness can withstand a vertical load. Leads to cost reduction. In addition, instead of the joists 26, the floor base materials 3, 3,... May be connected to each other by a channel 30. In this case, the beads 60, 60,. It is formed at equal intervals in the longitudinal direction while avoiding the site to be formed. Since other configurations and operational effects are the same as those in the third embodiment, the description thereof is omitted.

  The present invention is not limited to the configuration of each of the embodiments described above, and it is of course possible to change the design as appropriate without departing from the scope of the invention.

It is sectional drawing which shows the principal part of the floor foundation structure concerning 1st Embodiment of this invention. It is a disassembled perspective view of the floor base material and the support upper part in the floor base structure concerning 1st Embodiment of this invention. It is a partial side view which shows the principal part of the floor foundation structure concerning 1st Embodiment of this invention. It is a side view which shows the arrangement | positioning procedure of the floor base material in the floor base structure concerning 1st Embodiment of this invention. It is a partial side view which shows the principal part of the floor foundation structure concerning 2nd Embodiment of this invention. It is a perspective view which shows the connection state of the floor base material and channel in the floor base structure concerning 2nd Embodiment of this invention. It is sectional drawing which shows the principal part of the floor foundation structure concerning 3rd Embodiment of this invention. It is sectional drawing which shows the principal part of the floor foundation structure concerning 4th Embodiment of this invention. It is a partial side view which shows the principal part of the floor foundation structure concerning 4th Embodiment of this invention. It is a partial side view which shows the principal part of the floor foundation structure concerning 5th Embodiment of this invention. It is sectional drawing which shows the principal part of the floor foundation structure concerning 6th Embodiment of this invention.

Explanation of symbols

  1 is a flooring material, 2 is an under-floor slab, 3 is a floor base material, 3a is an upper surface, 3b is a lower surface, 3c and 3d are side surfaces, 4 is a support, 5 is a corner-type connection portion, and 6 is an inverted J-shaped bend. Part, 7 is an inverted U-shaped bent part, 8 is a work hole, 9 is a fitting insertion hole, 10 is a metal fitting, 11 is a screw hole, 12 is a cushioning material, 13 is a screw rod, 14 is a metal base 26 is a joist, 26a is an upper surface, 29 is a dry wall screw, 29a is a head, 30 is a receiving groove, 31 is a buffer plate, 32 is a channel, 45 is an upper screw rod, 45a is a screw portion, and 46 is a lower screw rod. 46a is a threaded portion, 47 is a screw cylinder, 47a and 47b are internal screws, 60 and 61 are beads, and P is a metal plate.

Claims (7)

Between the floor material (1) and the underfloor slab (2), a plurality of floor base materials (3), (3 And a plurality of supports (4), (4), which support each floor base material (3) with respect to the underfloor slab (2). The floor base material (3) is formed by bending a metal plate (P) cut into a predetermined width into a rectangular tube shape so that both ends thereof are in contact at one corner, and the metal plate (P ) Is provided with an inverted J-shaped bent portion (6) which is bent inwardly and further bent at the tip thereof toward the outer side of the metal plate (P). The other end is provided with an inverted U-shaped bent portion (7) which is bent in an inverted U shape on the inner side, and is continuously fitted and crimped to be continuous in the longitudinal direction. It is formed as a corner type connecting part (5), and the support (4) has a cross-section to hold the lower surface (3b) and both side surfaces (3c), (3d) of the floor base material (3). A receiving bracket (10) configured in an upward U shape and having a screw hole (11) at the center of the bottom, and a cushioning material (between the receiving bracket (10) and the floor base material (3)) 12), a screw base (13) screwed into the screw hole (11), and a metal base that rotatably supports the screw base (13) and is fixed to the underfloor slab (2) (14) and the screw rod (13) is divided into an upper screw rod (45) and a lower screw rod (46) each having screw portions (45a) and (46a) opposite to each other. The lower end of the upper screw 杆 (45) and the upper end of the lower screw 杆 (46), Characterized in that they are connected via screw cylinders (47) having internal screws (47a) and (47b) respectively screwed into the screw portions (45a) and (46a) of the person at the upper and lower portions, respectively. Floor structure to be used. The floor base materials (3), (3),... Are connected by a channel (32) for anti-fretting perpendicular to the floor base materials (3), (3),. The floor foundation structure according to claim 1. Between the floor material (1) and the floor base material (3), (3),..., A hollow metal square tube orthogonal to the floor base material (3), (3). The floor foundation structure according to any one of claims 1 and 2, wherein a plurality of joists (26), (26) are interposed. The upper surface (26a) of each joist (26) extends in the longitudinal direction and has a depth that can accommodate the head (29a) of the dry wall screw (29) for fixing the joist (26). The floor foundation structure according to claim 3, wherein (30) is formed. Each joist (26) is formed by bending a metal plate (P) cut into a predetermined width into a square tube shape so that both ends thereof are in contact at one point of the corner. One end portion is provided with an inverted J-shaped bent portion (6) which is bent inward and further bent at the tip end portion toward the outer side, and the other end of the metal plate (P) is provided. The end is provided with an inverted U-shaped bent portion (7) which is bent in an inverted U-shape on the inside, and a corner-type connecting portion continuous in the longitudinal direction by continuously fitting and crimping both. It is formed as (5), The floor ground structure as described in any one of the said Claim 3 and 4 characterized by the above-mentioned. A plurality of beads (61), (61),... Extending in the longitudinal direction are formed on both side surfaces of each joist (26) at predetermined intervals in the longitudinal direction. The floor foundation structure according to any one of 5 and 5. A plurality of beads (60), (60),. The floor foundation structure according to any one of claims 1, 2, 3, 4, 5 and 6.

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