JP2000314228A - Floor supporting leg - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor supporting leg which is excellent with respect to the cost, free in design of the shape, excellent in floor level regulating capacity, and preventive for floor creaking. SOLUTION: The floor supporting leg to support a floor at a desired height from a floor base comprises an insertion portion 2A to be inserted in a hole 1A or a hole 5A formed in a floor 1 or a receiving plate 5 to receive the floor 1, a flange portion 2B to be abutted on the circumference of the hole 1A, and a lower portion 2C extending downward of the flange portion 2B, and a female screw portion is formed in the circumferential surface of a hole formed toward an upper end from a lower end of the lower portion 2C to constitute a nut member 2. A projection 21 whose tip is located outside the inside diameter of the hole 1A or the hole 5A and bitten in an inner circumferential surface of the hole 1A or the hole 5A is formed on the outer circumference of the nut member 2, the whole nut member 2 in which the projection 21 is formed is integratedly formed of a synthetic resin material, a male screw portion 3A formed on the outer circumference of a stay 3 is screwed in the female screw portion of the nut member 2, and an elastic body 4 is provided on a lower end of the stay 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a floor support leg for supporting a floor at a desired height from a floor base such as a concrete slab.

[0002]

2. Description of the Related Art Floor support legs of this type are used for dry double floors installed in apartment houses, gymnasiums and the like. For example, as shown in FIG.
The nut member 101 is inserted into the hole 100A drilled in 00, and the metal support 102 having the screw portion 102A formed on the outer periphery is screwed into the screw portion 101A formed on the inner peripheral surface of the nut member 101. A structure in which a rubber elastic body 103 is provided at a lower end of a support 102 is known. The elastic body 103 is grounded on a floor base such as a concrete slab. The nut member 101 is made of metal, and as shown in FIG. 17, knurling 104 is applied to a portion to be inserted into the hole 100A to prevent the nut member 101 from coming out of the hole 100A. The nut member 101 is provided with a flange portion 105 in the middle of a metal pipe, and the flange portion 105 supports the floor panel 100.

Another conventional example of the nut member 101 is as follows.
18 and 19 are also known. The nut member 101 in FIG. 18 has no pipe portion below the flange portion 105 in FIG. 17, and the level adjustment amount on the floor is small. The nut member 101 in FIG. 19 has a pipe portion having an outer diameter smaller than the diameter of the hole 100A, and has a large flange portion 106 having a larger flange portion. The nut member 101 is fixed to the floor base panel 100 by driving a screw into the ground panel 100.

The conventional nut member 101 is made of metal,
Since the column 102 is also made of metal, a rubbing noise between the metals is generated in the use stage after the floor is completed. In order to prevent such floor noise, a special and expensive adhesive had to be used between the male screw portion 102A and the female screw portion 101A after the floor level was adjusted. In addition, the production of the metal nut member 101 requires press working of an iron plate or a pipe, forging of a steel bar, and the like, which limits the degree of freedom in terms of shape, increases the number of manufacturing steps, and is disadvantageous in terms of cost. Met. Further, in the nut members shown in FIGS. 16 and 17, the level adjustment amount is large, but when trying to make the floor height h shown in FIG. 16 or less, there is no alternative but to replace the nut members 101 shown in FIG. It was also difficult to easily cut and adjust the pipe portion under the flange 105 on site.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention
It is an object of the present invention to provide a floor supporting leg which is excellent in cost, can be freely designed in shape, has excellent floor level adjusting ability, and prevents floor noise.

[0006]

In order to achieve the above-mentioned object, the present invention provides a floor support leg for supporting a floor at a desired height from a floor base, the floor being formed on a floor or a receiving plate for receiving the floor. It has an insertion portion inserted into the hole, a flange portion abutting around the hole, and a lower portion extending below the flange portion, and a female screw portion is formed on a peripheral surface of the hole formed from the lower end of the lower portion to the upper end. A nut member is formed to form a projection on the outer periphery of the nut member, the tip of which is located outside the inner diameter of the hole, and which is inserted into the inner peripheral surface of the hole, and the entire nut member on which the projection is formed is formed. It is formed integrally with a synthetic resin material, and a male thread formed on the outer periphery of the column is screwed into the female thread of the nut member, and an elastic body is provided at the lower end of the column.

[0007]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment shown in FIG. 1, a hole 1A is formed in a floor base panel 1, which is a member constituting a floor, and an insertion portion 2A inserted into the hole 1A and a flange portion contacting around the hole 1A. 2B and a lower portion 2 extending below the flange portion 2B.
C to form the nut member 2. A plurality of projections 21 are formed on the outer periphery of the nut member 2 such that the tip is located outside the inner diameter of the hole 1A and is inserted into the inner peripheral surface of the hole 1A. As shown in FIG. 2, the nut member 2 has a female thread 2D formed on a peripheral surface of a hole formed from an opening at the lower end of the lower portion 2C to the upper end. In this embodiment, the hole is a vertically penetrating hole, and a female screw portion 2D is formed on the entire inner peripheral surface of the hole. However, the upper end side may not be open, and a hole may be formed from the opening side of the lower end to the middle, and the internal thread portion 2D may be formed in this hole.

Further, a rib 22 is formed on the lower portion 2C of the nut member 2 in order to maintain strength. The whole nut member 2 is integrally formed of a synthetic resin material. An external thread 3A formed on the outer periphery of the column 3 is screwed into the internal thread 2D of the nut member 2. An elastic body 4 made of rubber is provided at a lower end of the column 3. The columns 3 are also made of a synthetic resin material.

FIG. 3 shows a case in which the supporting legs are used for a low floor. L, the lower portion 2C is cut off at the site, and the portion of the column 3 protruding from the upper part of the nut member 2 is also cut along the cutting line C.L. This shows an example of cutting off at L. FIG. 4 is a front view of the nut member 2 used in FIG. Shown after cutting at L. Since both the nut member 2 and the column 3 are formed of a synthetic resin material, it is easy to cut at a desired place on site.

FIG. 5 is a plan view of the nut member 2 as viewed from above.
Are formed equally along the outer periphery of the blade, and are formed as isosceles triangular blade-like projections along the axial direction. The inner angle of the tip of the projection (blade) 21 is about 60 °,
The tip is easily inserted into the inner peripheral surface of the hole 1A.

In the embodiment shown in FIG. 6, a projection 21 by knurling is formed on the outer periphery of the insertion portion 2A of the nut member 2 as shown in FIG. In this embodiment, in order to use the supporting legs for a low floor, a cutting line C.I. L, and cut the lower part 2 of the nut member 2 as shown in FIG.
Cut off C. FIG. 8 shows the nut member 2 with the lower portion 2C cut off.

The nut member 2 shown in FIGS. 9 and 10 shows an example in which one of the protrusions 21 has a male screw thread and the other has a large number of small triangular pyramid protrusions. The shapes of the protrusions 21 include a plurality of longitudinal blades and male screw threads formed in the circumferential direction along the axial direction of the insertion portion 2A as described above (see FIG. 9), and knurled convex portions (see FIG. 9). 8) and a plurality of triangular pyramid-shaped small projections (see FIG. 10).

In the embodiment shown in FIG. 11, holes are not formed in the members constituting the floor (floor base panel 1), and holes 5A are formed in the receiving plate 5.
Is formed, and the floor base panel 1 is mounted on the receiving plate 5.

The embodiment shown in FIG. 12 shows a nut member 2 in which a receiving plate 5 is integrally formed of a synthetic resin material.
And the nut member 2 is pressed into the hole 1A of the floor base panel 1. A projection 21 is formed on the outer peripheral surface of the nut member 2. FIG. 13 is a perspective view of the embodiment shown in FIG. 12, in which the nut member 2 is formed so as to protrude upward near one side of the receiving plate 5.

FIG. 14 is a half sectional view of the column 3 and the elastic body 4. A flange 3B is integrally formed at the lower end of the column 3 with a synthetic resin material. Body 4
Is shown. The elastic body 4 is formed in advance by vulcanization molding or the like, and the flange 3B is formed from the opening on the upper surface thereof.
The elastic body 4 can be provided at the lower end of the column 3 by fitting.

As the synthetic resin material for forming the nut member 2 and the support 3, a thermoplastic resin such as nylon, ABS, polyacetal, and polyethylene, and a thermosetting resin such as phenol resin and urea resin can be used as appropriate. Therefore, it is desirable to select a material that can be injection molded.
Mixing glass fiber or the like into the resin material also helps increase the strength.

FIG. 15 is a bottom view of the elastic body 4, in which a small hole 4A communicating with the hollow portion of the column 3 is formed at the center of the elastic body 4, and extends radially outward from the small hole 4A. The plurality of grooves 4B are formed. After level adjustment of the floor surface, an adhesive is poured from the opening side of the upper end of the nut member 2, and the adhesive that has flowed into the small hole 4A through the hollow portion of the column 3 is flowed into the groove 4B. The adhesive flowing into the groove 4 </ b> B bonds the floor base and the elastic body 4.

[0019]

As described above, according to the present invention, the insertion portion inserted into the hole formed in the floor or the receiving plate for receiving the floor, the flange portion abutting around the hole, and the lower portion of the flange portion are provided. A nut member is formed on a peripheral surface of a hole formed from the lower end of the lower portion toward the upper end to form a nut member, and the outer periphery of the nut member is larger than the inner diameter of the hole. The tip is located outside and forms a projection that fits into the inner peripheral surface of the hole, and the entire nut member with the projection is integrally formed of a synthetic resin material, and is formed on the female screw part of the nut member on the outer periphery of the column. Since the male thread is screwed in and an elastic body is provided at the lower end of this support, there is no floor noise due to metal-to-metal contact unlike the conventional case, the design of the shape of the nut member is free, and the manufacturing cost is reduced. be able to.
Also, when the floor is lowered at the site, the nut member can be easily cut because it is formed of a synthetic resin material, and can be easily changed to a low-floor support leg.
Excellent floor level adjustment ability. In addition, generation of rubbing noise due to contact can be prevented. Furthermore, when the support pillar is also formed of a synthetic resin material into a hollow cylindrical shape, no rust problem occurs because no metal material is used for the support legs.

[Brief description of the drawings]

FIG. 1 is a front view showing a preferred embodiment of the present invention.

FIG. 2 is a perspective view of a nut member used in FIG.

FIG. 3 is a front view showing support legs configured for a low floor.

FIG. 4 is a front view of a nut member used in FIG. 3;

FIG. 5 is a plan view of a nut member.

FIG. 6 is a sectional view showing another embodiment.

FIG. 7 is a sectional view showing an embodiment in which a lower portion of the nut member shown in FIG. 6 is cut off.

FIG. 8 is a perspective view of a nut member used in FIG. 7;

FIG. 9 is a perspective view showing an example in which the shape of a projection of a nut member is changed.

FIG. 10 is a perspective view showing an example in which the shape of a projection of a nut member is further changed.

FIG. 11 is a front view showing another embodiment.

FIG. 12 is a sectional view showing still another embodiment.

FIG. 13 is a perspective view of the embodiment shown in FIG.

FIG. 14 is a half sectional view showing a relationship between a support and an elastic body.

FIG. 15 is a bottom view of the elastic body.

FIG. 16 is a sectional view showing a conventional example.

FIG. 17 is a perspective view of the nut member shown in FIG. 16;

FIG. 18 is a perspective view showing another example of a conventional nut member.

FIG. 19 is a perspective view showing still another example of a conventional nut member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor (floor base panel) 1A hole 2 Nut member 2A Insert part 2B Flange part 2C Lower part 3 Prop 3A Male thread part 3B Collar part 4 Elastic body 5 Receiving plate 5A hole 21 Projection

Claims (5)

[Claims] 1. A floor support leg for supporting a floor at a desired height from a floor base, wherein an insertion portion is inserted into a hole formed in the floor or a receiving plate for receiving the floor, and a flange portion abuts around the hole. And a lower portion extending below the flange portion, and a female member is formed on a peripheral surface of a hole formed from the lower end of the lower portion to the upper end to form a nut member. The tip of the hole is located outside the inner diameter of the hole to form a projection that fits into the inner peripheral surface of the hole. The entire nut member on which the projection is formed is integrally molded of a synthetic resin material, A floor support leg characterized in that an external thread formed on the outer periphery of the support is screwed in, and an elastic body is provided at a lower end of the support. 2. The projection is formed in a plurality of longitudinal blades formed in the circumferential direction along the axial direction of the insertion portion, a male thread, a knurled convex, and a plurality of triangular pyramid small projections. The floor support leg according to claim 1, wherein: 3. The floor support leg according to claim 1, wherein the support column is formed of a synthetic resin material into a hollow cylindrical shape. 4. The floor support leg according to claim 3, wherein a collar portion is integrally formed at a lower end of the support column with a synthetic resin material, and the collar portion is coated with rubber to form an elastic body. 5. A small hole communicating with a hollow portion of a pillar is formed at the center of said elastic body, and a plurality of grooves extending radially outward from said small hole are formed. 4
4. The floor support leg according to 1.