JP2008144453A - Sleeper connection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeper connection structure of a sleeper which is for use in a floor substrate of a detached house, an apartment house, a gymnasium, a multi-purpose auditorium, and the like, wherein the sleeper connection structure facilitates mounting of the sleeper, is excellent in workability, simple in form, and excellent in cost efficiency. <P>SOLUTION: According to the connection structure for connecting the sleeper 4 having a hat-shaped cross section, to an upper portion of a floor bearing leg 2 having a height adjusting function, a sleeper bearing member 6 arranged on the upper portion of the floor bearing leg, for bearing the sleeper, has a U-shaped bent portion 30 formed on one side of a flat plate, and an upward-bent erect piece 32 formed on the other side opposite to the one side. Then one flange portion 38 of the sleeper is fitted into the bent portion 30 of the sleeper bearing member, and the other flange portion 38 is mounted inside the erect piece 32 and fastened by a screw 44, to thereby connect the sleeper to the sleeper bearing member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a large-drawing material connecting structure for large-drawing materials used for a floor foundation such as a detached house, an apartment house, a gymnasium, or a multipurpose hall.

  In general, the floor foundation of gymnasiums, etc. is a structure in which joists are placed on a large pulling material supported by a large pulling material support mechanism (bundle) and a floor board is laid, so that sufficient exercise performance can be demonstrated. A floor structure with good elasticity is constructed by using a structure that supports the large pulling material with a cushioning member. Conventionally used wooden large pulling materials are prone to deformation such as warping, so that the use of steel large pulling materials having excellent shape stability is increasing. There is a cross section hat type as the steel large drawing material, and this large drawing material is provided with flange portions on the lower left and right sides, and these flange portions are attached and fixed to the support mechanism.

  Conventionally, as a structure for attaching the large drawing material to a bundle, Patent Document 1 discloses a connection structure of large drawing materials shown in FIG. In this connection structure, a large receiving plate 102 is attached to the upper end of a support bolt 101 that stands up from the ground, and the support piece 103 is cut and raised from the center of both sides of the large receiving plate 102 to the bundle 100, and other opposing edges. The constraining protrusion 104 is raised.

  A leaf spring 110 in which a locking piece 108 and a guide piece 109 are formed is fixed to the bent portion 106 of the large receiving plate 102 via a narrow elastic deformation portion 107. Here, when the steel pulling material 114 having a substantially rectangular hollow cross section with an open bottom is inserted into the bundle 100, the seating piece 116 of the steel pulling material 114 is formed between the support piece 103 and the restraining protrusion 104. The steel pulling material 114 is connected to the bundled article 100 by fitting in between and engaging the engagement piece 118 with the guide piece 109. In this way, the steel pulling material can be attached to the bundle with one touch.

  Further, in Patent Document 2, side walls are raised from both sides of the receiving portion of the large pulling material to provide an engaged portion, and the engaging portion provided on the steel large pulling material is locked to the engaged portion. A structure for supporting a steel large-drawing material that does not use screws is described. Japanese Patent Application Laid-Open No. H10-228667 describes a large receiving device that can replace a receiving metal fitting that receives the large drawing material.

JP2002-21238 JP2000-230292A JP 2003-239434 A

  Now, in the connection structure of the large pulling material, the steel large pulling material can be connected to the bundle with one touch. However, since both are engaged by engagement, the large pulling plate of the bundle and the steel There is a problem that the meshing structure of both of the large pulling materials is complicated, which is disadvantageous in terms of production cost and productivity of the product, and that there is a concern about noise. In addition, the support structure of the steel pulling material in Patent Document 2 is also a form in which both side walls of the steel pulling material are elastically mounted in a special shape, so there is no versatility, and economical and sounding There's a problem.

  The present invention has been made to solve the above-described problems, and provides a large-drawing material connecting structure that can be easily attached to a large-drawing material, has excellent workability, has a simple form, and is economical. The purpose is to do.

  In order to solve the above technical problem, the large pulling material connecting structure according to the present invention includes a floor support leg 2, 52 having a height adjusting function and an upper part of the floor support leg as shown in FIG. In the connecting structure for connecting the large pulling material 4 having a hat-shaped cross section, the large receiving members 6 and 53 provided above the floor support legs and supporting the large pulling material have a U-shape on one end side of the flat plate. The bent portion 30 bent in the shape is provided, and the standing piece 32 bent upward is provided on the other end side opposite to the bent portion 30, and one flange portion 38 of the large pulling material is provided on the bent portion 30 of the large receiving member. The other flange portion 38 is placed in the standing piece 32 and fixed with screws 44, and the large pulling material is connected to the large pulling member.

  The large pulling material connecting structure according to the present invention has a configuration in which a locking convex portion 34 for locking the other flange portion 38 is formed inside the standing piece 32 of the large receiving members 6, 53.

  The large pulling material connecting structure according to the present invention has a configuration in which a shock absorber 55 that elastically supports a floor load is provided below the large receiving member 53 of the floor support leg 52.

  According to the large pulling material connecting structure according to the present invention, the large receiving member is provided with a bent portion on one end portion side of the flat plate, and is provided with a standing piece on the other end side facing the large pulling member. When connecting, one flange part of the large pulling material is inserted into the bent part, and the other flange part is placed in the standing piece of the large receiving member and screwed, so the cross section hat The large pulling material of the mold can be easily attached to the large receiving member related to the connecting structure of the large pulling material, and it is easy to work with. Therefore, the cost can be reduced and the economy is excellent.

  According to the large pulling material connecting structure according to the present invention, since the locking projection for locking the other flange portion is formed inside the standing piece of the large receiving member, the large pulling material becomes the large receiving member. There is an effect that the temporarily fixed connection work can be performed quickly and the workability is excellent.

  According to the large pulling material connecting structure according to the present invention, since the shock absorber for elastically supporting the floor load is provided at the lower part of the large support member of the floor support leg, a floor having a good shock absorbing property as an athletic sports facility can be obtained. There is an effect.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a large draw material connecting structure according to the present invention will be described with reference to the drawings.
FIG. 1 shows a floor support leg 2 that employs the above-mentioned large draw connecting structure. This floor support leg 2 is used, for example, as a floor foundation of a floor for a detached house. The floor support leg 2 has a height adjusting function and is provided with a large receiving member 6 on the upper part to constitute a large pulling material connecting structure for connecting the large pulling material 4 having a hat-shaped cross section.

  In the floor support leg 2, a turnbuckle 14 is erected on a base plate 12 fixed to a base surface 10 as a floor slab. The turnbuckle 14 is provided with a cylindrical body 20 at the center, and a right screw hole is provided on one of the upper and lower sides of the cylindrical body 20, and a left screw hole is provided on the other side. Rods 22 and 23 are screwed into the screw holes, and nuts 26 and 27 with washers 24 are fastened to the rods 22 and 23, respectively. An operation portion 28 having a quadrangular cross section is provided at the center of the cylindrical body 20. By turning the operation unit 28, the lengths of the rods 22 and 23 can be changed.

  As shown in FIG. 2, the large receiving member 6 is made of a rectangular steel plate, and a bent portion 30 is formed on the inner side of the flat plate portion 31 of the large receiving member 6 so as to be bent in a U shape. A standing piece 32 bent upward is provided on the other end side facing this. Further, locking projections 34 are respectively formed on the left and right sides of the standing piece 32. The upright piece 32 is provided with two locking projections 34, but this may be one or three.

  An elastic plate member 8 is bonded to the upper surface portion of the large receiving member 6. The elastic plate 8 is made of an elastic material such as rubber or synthetic resin. The base plate 12 is made of a steel plate, and a boss portion 36 bulging upward is provided at the center. The large draw material 4 is formed by bending a steel plate into a cross-sectional hat shape, and is a long material composed of a flange portion 38, a side surface portion 40, and an upper surface portion 42.

  The floor support leg 2 is obtained by fixing the large receiving member 6 to the rod 22 on the upper side of the turnbuckle 14 and the base plate 12 to the rod 23 on the lower side. The upper end portion of the upper rod 22 is joined to a boss portion 37 provided at the center of the large receiving member 6 by welding or caulking, and the lower end portion of the lower rod 23 is connected to the base plate. Twelve boss portions 36 are joined by welding or caulking. The height of the floor support leg 2 is adjusted by the turnbuckle 14.

  Here, construction of a floor of a detached house or an apartment house using the floor support leg 2 will be described. First, the floor support legs 2 are disposed at a predetermined interval on the base surface 10 of the floor in the hall, and the base plate 12 is fixed to the base surface 10 using an adhesive or a fastening pin. When adjusting the height of each floor support leg 2, the nuts 26 and 27 of the turnbuckle 14 are loosened, and the height is adjusted by turning the operation unit 28 using a tool or the like, and the nuts 26 and 27 are tightened at desired positions. .

  Then, the large pulling material 4 is arranged between the floor support legs 2, and the large pulling material 4 is connected and fixed to the large pulling receiving member 6 of the floor support leg 2 through the elastic plate material 8. In this connection, one of the flange portions 38, 38 of the large pulling member 4 is inserted and inserted into the bent portion 30 of the large pulling member 6. When the one flange portion 38 is inserted, the other flange portion 38 comes into contact with the inside of the standing piece 32 of the large receiving member 6, and in this state, the other flange portion 38 is brought into contact with the standing piece 32 of the large receiving member 6. Press down along the inside. Then, the flange portion 38 is narrowed inward by the spring force of the large pulling material 4, the end of the other flange portion 38 passes through the portions of the locking projections 34, 34, and the flange portion 38 is locked by the spring return. The projections 34 are locked at the lower positions of the projections 34.

  At this time, the flange portions 38 of the large pulling member 4 are placed on the elastic plate member 8 above the flat plate portion 31 of the large receiving member 6, and one side thereof is fitted into the bent portion 30 of the large receiving member 6. The other side is engaged with the engaging projections 34, 34 and temporarily fixed to the large receiving member 6 via the elastic plate member 8. Then, a screw 44 such as a drill screw capable of drilling a lower hole is screwed into the other flange portion 38 and screwed into the large receiving member 6 to fix the large pulling material 4. In this way, the large pulling material 4 can be attached to the floor support leg 2 by a simple operation of inserting the large pulling material 4 into the large pulling receiving member 6, fitting, and screwing.

  Accordingly, the large pulling material 4 can be simply fixed temporarily to the large receiving member 6 by simply engaging and locking the flange portions 38, 38 to the large receiving member 6, and the screw can be fixed in this state. Good sex. Normally, the large pulling material 4 is fixed to both the left and right flange portions 38, 38 by using fasteners such as screws. In this embodiment, only one flange portion 38 is fixed by screws 44. Can be completed easily and quickly. Note that the locking projection 34 of the standing piece 32 locks the flange portion 38 of the large pulling material 4, but even if the locking projection 34 is not provided, the screw 44 is fixed. Thus, the flange portion 38 can be fixed to the large receiving member 6.

  After the large pulling material 4 is fixed, the turnbuckle 14 is operated as necessary to adjust the height (correction). Next, a floor material 46 and the like are arranged on the upper part of the above-described large draw material 4 to finish the floor base.

  As described above, according to the above-mentioned large draw material connection structure, the cross-section hat-type large draw can be easily attached to the large draw material connection structure, and the workability is good, and the large draw material also corresponds to the cross-sectional hat shape. Therefore, the cost can be reduced and it is economical, and since the mounting form is simple, it is suitable for a housing facility, for example. In addition, the elastic plate material can prevent squeak noise, as well as sound insulation and sound insulation effects.

Next, a large pulling material connecting structure according to another embodiment will be described.
FIG. 3 shows a floor support leg 52 that employs the above-mentioned large draw connecting structure. This floor support leg 52 facilitates the fixing of the cross-sectional hat-type large draw material on the floor base of sports floors such as exercise rooms and gymnasiums, and also has a buffering characteristic so that it is possible to perform athletic competitions safely. It is a thing. The floor support leg 52 includes a large receiving member 53 constituting a large pulling material connecting structure, a shock absorber 55 for elastically holding the large receiving member 53, and a support base 54 for supporting the same.

  As shown in FIG. 4, the shock absorber 55 includes a support bolt 56, a nut member 58, a spring washer 60, a support member 62, a shock absorber 64, a cylindrical spacer 66, a large receiving member 53, an elastic plate member 8 and a flat washer 72. Have. The large pulling member 4 is placed on the large receiving member 53 via the elastic plate member 8, and the large pulling member 4 is elastically supported by the buffer member 64 together with the large receiving member 53.

  The support 54 includes a base plate 78 fixed to the base surface 10 as a floor slab, a cylindrical support leg 80, and a receiving part 82 fixed to the upper part of the support leg 80 and provided with a screw hole 81 in the center. Have. The shock absorber 55 is fixed to the support base 54 with a nut member 59 with a spring washer 61 interposed between the support bolts 56. The support bolt 56 of the shock absorber 55 is composed of a hexagonal head (in addition to a square or the like) head 86 and a shaft portion 84 in which a screw groove is engraved. The nut members 58 and 59 have a hexagonal shape (in addition, a square or the like). The spring washer 60 is a spring washer using an annular steel spring.

  The support member 62 is made of a circular steel plate, and a circular hole 88 through which the shaft portion 84 of the support bolt 56 can be inserted is provided at the center. Since the support member 62 contacts the lower end portion of the cylindrical spacer 66, the diameter of the hole 88 is formed smaller than the outer diameter of the cylindrical spacer 66.

  The buffer member 64 is made of an elastic material such as rubber or synthetic resin, and is a hollow columnar member provided with a hole portion 90 penetrating in the axial direction at the center. The cylindrical spacer 66 is made of a cylindrical steel material. The cylindrical spacer 66 has an outer diameter that can be loosely inserted into the hole 90 of the buffer member 64.

  The large receiving member 53 is made of a rectangular steel plate, and a circular hole 92 through which the cylindrical spacer 66 can be inserted is provided at the center. A bent portion 30 that is bent in a U-shape is formed on one end of the flat plate portion 31 of the large receiving member 53, and an upright piece 32 that is bent upward is formed on the other end facing the same. Is provided. Further, locking projections 34 are respectively formed on the left and right sides of the standing piece 32. Here, although the two protruding protrusions 34 are provided on the standing piece 32, the number may be one or three.

  The elastic plate member 8 is a rectangular thin plate member made of an elastic material such as rubber or synthetic resin, and a circular hole 71 through which the cylindrical spacer 66 can be inserted is provided at the center. The flat washer 72 has a hole formed smaller than the outer diameter of the cylindrical spacer 66, and the upper end of the cylindrical spacer 66 abuts on the lower surface of the flat washer 72. The flat washer 72 has an outer diameter larger than that of the hole 71 of the elastic plate member 8.

  The height dimension of the cylindrical spacer 66 is approximately the same as the dimension of the buffer member 64 plus the thickness of both the large receiving member 53 and the elastic plate member 8. For this reason, the support bolt 56 is inserted into each of the above members, and a cylindrical spacer 66 is sandwiched between the head 86 of the support bolt 56 (with a flat washer 72) and the support member 62, and fastened with a nut member 58. In this case, the cylindrical spacer 66 secures an interval obtained by adding the thickness dimension of the large receiving member 53 and the height (and thickness) dimension before the buffer member 64 and the elastic plate member 8 are elastically contracted. Is done.

  Therefore, the cylindrical spacer 66 limits the distance between the support member 62 where the buffer member 64 is interposed and the head portion 86 of the support bolt 56, and the buffer member 64 does not move even when the nut member 58 is tightened to the support bolt 56. Without being compressed, a stable buffer mechanism is formed, and good buffer characteristics are obtained. Further, an idle rotation mechanism of the large receiving member 53 is formed with respect to the rotation of the support bolt 56 and the cylindrical spacer 66, and the support bolt 56 and the like can be relatively rotated while the large receiving member 53 is stopped.

Next, assembly of the floor support leg 52 will be described.
As shown in FIG. 4, the buffer device 55 of the floor support leg 52 includes a flat washer 72, a large receiving member 53 in which the elastic plate member 8 is bonded to the upper surface portion, a cylindrical spacer 66, and a buffer member 64 in order to the support bolt 56. The holes of the support member 62 and the spring washer 60 are inserted, and these members are fastened by the nut member 58. Here, the elastic plate member 8, the large receiving member 53, and the buffer member 64 are fitted into the support bolt 56 while being inserted through the cylindrical spacer 66.

  When the nut member 58 is fastened, the cylindrical spacer 66 is sandwiched between the flat washer 72 and the upper surface of the support member 62 interposed in the head 86 of the support bolt 56. At this time, each member (the nut member 58, the spring washer 60, the support member 62, the cylindrical spacer 66, the flat washer 72, and the support bolt 56) generates a static frictional force at each contact portion, and each member is Integrated and fixed. Further, the spring washer 60 always brings the support bolt 56, the flat washer 72, the cylindrical spacer 66 and the support member 62 into contact with each other with an urging force by fastening the nut member 58, and a strong static frictional force between the members. As compared with the case where the spring washer 60 is not used, the members can be surely integrated.

  The shock absorber 55 is supported by a buffer member 64 and a cylindrical spacer 66 by a support member 62, and the large receiving member 53 is elastically supported by the buffer member 64, and the large receiving member 53 is a cylindrical spacer serving as an axis of the large receiving member 53. 66 is fitted so as to be movable up and down. As a support mechanism for the floor, the buffer member 64 of the shock absorber 55 is not elastically deformed in a normal state (the state where there is no load from the floor), but the load from the floor is large through the large pulling material 4 during movement or the like. When applied to the receiving member 53, the buffer member 64 is pushed down by the large receiving member 53 and elastically deforms.

  Next, the shock absorber 55 is screwed onto the support base 54. At this time, the nut member 59 is screwed into the shaft portion 84 of the support bolt 56 and the spring washer 61 is fitted, and the shaft portion 84 is screwed into the screw hole 81 of the receiving portion 82 of the support base 54. In this state, when the nut member 58 fastened to the support bolt 56 is turned with a tool or the like, the support bolt 56 is integrated together with the spring washer 60, the support member 62, the cylindrical spacer 66, and the flat washer 72 in conjunction with this. Rotate. Thus, in the floor support leg 52, an idle mechanism of the large receiving member 53 is configured with respect to the support bolt 56 and the like.

  The buffer member 64 has a simplified shape, and is simply assembled to the buffer device 55 so that it can be easily replaced. Therefore, by changing to another buffer member 64 having different elasticity, changing the height size of the buffer member 64 (also changing the height size of the cylindrical spacer 66 in the same manner), or changing the outer diameter, etc. Adjustment can be performed easily and it has excellent versatility. In addition, the support base 54 is not limited to the support base 54 and may be a large pulling material connecting structure as long as the support bolt 56 of the shock absorber 55 can be screwed into the support base 54. Is possible.

  Here, construction of a floor such as a gymnasium or a school room for school children using the floor support legs 52 will be described. First, the floor support legs 52 are arranged at a predetermined interval on the base surface 10 of the floor in the hall, and the base plate 78 of the support base 54 is fixed to the base surface 10 using an adhesive or a fastening pin. And the height of the floor support leg 52 is adjusted as needed. At this time, the nut member 59 of the floor support leg 52 is loosened, the support bolt 56 is turned using a tool or the like to adjust the height of the shock absorber 55, and the nut member 59 is tightened at a desired position to support the shock absorber 55. Secure to the base 54.

Next, the large pulling material 4 is arranged and fixed over each floor support leg 52.
Here, based on FIG. 5, the method to attach the said large drawing material 4 to the floor support leg 52 is demonstrated. The large pulling material 4 has a hat-shaped cross section, and as shown in FIG. 5A, one of the lower left and right flange portions 38, 38 is inserted into the bent portion 30 of the large receiving member 53 and engaged therewith.

  When this one flange portion 38 is engaged, as shown in FIG. 5B, the other flange portion 38 comes into contact with the inside of the standing piece 32 of the large receiving member 53, and in this state, the other flange portion 38 38 is pressed downward along the inside of the standing piece 32 of the large receiving member 53. Then, the flange portion 38 is narrowed inward by the spring force of the large pulling material 4, and the end portion of the other flange portion 38 passes through the portions of the locking projections 34, 34, as shown in FIG. The flange portion 38 is locked at a lower position of the locking projections 34 and 34 by spring return.

  At this time, the flange portions 38 of the large pulling member 4 are placed on the elastic plate member 8 above the flat plate portion 31 of the large receiving member 53, and one side thereof is engaged with the bent portion 30 of the large receiving member 53. The other side is locked to the locking projections 34 and 34 and is fixed to the large receiving member 53 via the elastic plate member 8. Then, a screw 44 such as a drill screw capable of drilling a lower hole is screwed into the other flange portion 38 and screwed into the large receiving member 53 to fix the large pulling material 4. In this way, the large pulling material 4 can be attached to the floor support leg 52 by a simple operation of inserting the large pulling material 4 into the large pulling receiving member 53, fitting, and screwing.

  Therefore, the large pulling material 4 can be temporarily fixed to the large receiving member 53 simply by engaging and locking the flange portions 38, 38 to the large receiving member 53, and the screw can be fixed in this state. Good sex. Normally, the large pulling material 4 is fixed to both the left and right flange portions 38, 38 by using fasteners such as screws. In this embodiment, only one flange portion 38 is fixed by screws 44. Can be completed easily and quickly.

  After the large pulling material 4 is fixed, the head 86 of the support bolt 56 is hidden in the large pulling material 4 so that the tool cannot be used. However, in the floor support leg 52, if it is necessary to adjust (finely adjust) the height of the floor support leg 52 after the large pulling material 4 is fixed, the nut member that fixes the shock absorber 55 to the support base 54. When the nut member 58 of the shock absorber 55 is turned using a tool together with the tool 59, the support bolt 56 also turns together therewith, so that the height adjustment of the shock absorber 55 can be corrected. At this time, the support bolt 56 and the like rotate relative to the large receiving member 53.

  And after adjusting the said buffering device 55 (large drawing material 4) to the desired height position, the nut member 59 is tightened and the buffering device 55 is fixed to the support stand 54. FIG. Thus, in the floor support leg 52 according to the above-described embodiment, the nut member 58 is used as the rotating means of the support bolt 56, and the height of the floor support leg 52 can be adjusted by turning the nut member 58.

  Next, a steel cross-hat-type joist 94 is disposed on the upper portion of the above-described large-drawn member 4 in a direction orthogonal thereto. A rubber plate 93 is interposed between the joist 94 and the large pulling material 4 as an elastic material for vibration and soundproofing, and the joist 94 is fixed to the large pulling material 4 using screws or the like. A plywood 96 as a discard plate is disposed on the upper part of the joist 94, and a flooring material 98 is attached to the plywood 96 and finished.

  As described above, according to the above-described embodiment, the attachment of the cross-section hat type large pull to the large pull material connecting structure can be easily performed by screwing only to one flange portion, and the workability is good. The material connection structure is simplified in form, and the forklift also corresponds to a hat-shaped cross section, so that the cost can be reduced and it is economical, for example, suitable for a light physical education facility.

  In addition, the large pulling material connecting structure can provide a floor having good shock-absorbing property as an athletic sports facility, and the idle mechanism of the large receiving member with respect to the support bolt even after the support base is fixed and the large pull is attached. Therefore, the height can be adjusted (corrected), and the fine adjustment of the level can be easily performed, so that the construction accuracy and workability can be improved. In addition, the elastic plate material can prevent squeak noise, as well as sound insulation and sound insulation effects.

  In addition, since the large pulling material connection structure is an assembly form of each member, it is easy to incorporate a buffer member etc., so it is easy to change the material of this buffer member, change the height dimension, etc. according to the type of sports The shock absorber can be adjusted and changed for versatility, and the shock absorber can be used in combination with any type of support base into which the support bolt can be screwed, thereby reducing the cost.

It is a figure which shows the floor support leg which employ | adopted the large draw material connection structure which concerns on embodiment of this invention. It is a perspective view which shows the large acceptance member etc. which concern on a floor support leg. It is a figure which shows the floor support leg which employ | adopted the large draw material connection structure which concerns on other embodiment. It is an exploded view of the shock absorber concerning a floor support leg. It is a figure which shows the attachment procedure of the large drawing material to a large drawing material connection structure, (a) is a state which fits the flange part of a large drawing material in the bending part of a large drawing member, (b) is a large flange part. The state in which the flange member is fitted and locked is shown in FIG. It is a figure which shows the connection structure of the steel large drawing concerning a prior art example.

Explanation of symbols

2,52 Floor support legs 4 Large pulling material 6,53 Large receiving member 30 Bending portion 32 Standing piece 34 Locking convex portion 38 Flange portion 44 Screw 55 Shock absorber

Claims (3)

In a connection structure that connects a floor support leg having a height adjusting function and a large pulling material having a cross-sectional hat shape to the upper part of the floor support leg,
The large receiving member provided on the floor support leg and supporting the large pulling material is provided with a bent portion bent in a U-shape on one end portion side of the flat plate, and on the other end portion side facing this. A standing piece that is bent upward is provided, and one flange portion of the large pulling material is fitted into the bent portion of the large receiving member, and the other flange portion is placed in the standing piece and screwed. A large pulling material connecting structure, wherein the large pulling material is connected to the large receiving member.   2. The large pulling material connecting structure according to claim 1, wherein a locking projection for locking the other flange portion is formed inside a standing piece of the large receiving member.   3. The large pulling material connecting structure according to claim 1, wherein a shock absorber for elastically supporting a floor load is provided at a lower portion of the large receiving member of the floor support leg.

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