JPS6135646Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the improvement of an underfloor support device, and is particularly suitable for use in supporting rigid metal horizontal members that form the underfloor framework of gymnasiums and various dojos. This is intended to achieve a supporting effect and facilitate level adjustment operations and horizontal member fixing operations.

Hereinafter, the specific structure of the present invention will be explained based on the illustrated embodiment. In FIGS. 1 to 3, 1 is a curved vertical U-shaped cross section that gradually expands downward from the metal plate. The integrated horizontal seat plate 2 is simply grounded onto the concrete floor slab 4 through the cushion seat 3, or concrete nails driven through the through holes 5 of the seat plate 2 after grounding, etc. It is designed to be fixed by Reference numeral 6 denotes a screw receiving tube which is burred at the center of the horizontal upper surface of the leg stand 1, and a screw support 7 is screwed into the tube so that it can be raised and lowered. Reference numeral 8 denotes a level adjustment nut that fixes the degree of elevation thereof, and is tightened to the screw support 7. Reference numeral 9 denotes a spring receiving collar plate, which is made of a metal disc, and a receiving nut 10 is integrally welded to the center of the lower surface of the collar plate, into which the upper end of the screw support 7 is screwed from below. and is integrally held in a fixed state at all times by a lock nut 11.

Further, reference numeral 12 denotes a metal receiving plate which faces the collar plate 9 concentrically at a constant interval, and supports and holds the large tension member 14 from below through the cushion seat 13 with its horizontally flat upper surface. As shown in the figure, the large tension member 14 is made of a hat-shaped steel provided with a pair of lip grooves 15. As is clear from FIG. 2, a plurality of locking claws 16 (four in the illustrated example) are bent downward and protruded radially symmetrically on the receiving plate 12 by press working. The plate 12 has a square umbrella shape as a whole. 17 is receiving plate 1
2 is a spring receiving convex protruding downwardly at the center thereof; 18 is a receiving plate 12 and the above-mentioned flange plate 9;
It is a coil spring interposed between the floor and the floor, which elastically supports the floor and functions as a shock absorber that prevents floor vibrations on the upper floors of the building from propagating to the lower floors.

In this regard, in Figs. 1 and 3, a double coil spring 18 is interposed between a large-diameter coil spring 19 and a small-diameter coil spring 20, which are concentrically bundled and have different helical pitches and helical directions.
The cross-sectional shape of the large diameter coil spring 19
The upper and lower ends of the spring are welded together to the underside of the umbrella-shaped support plate 12 and the upper surface of the flange plate 9, and the small diameter coil spring 20 which is, so to speak, enclosed inside the spiral has its upper end supported and held concentrically with the screw support 7 by the protrusion 17 of the support plate 12 to prevent lateral displacement, and its lower end is also supported on the upper surface of the flange plate 9.
However, as shown in FIG. 4, such a coil spring 18 may of course be a double bundle of coil springs 18 having a circular cross section, which are similarly concentric and are fixed between the support plate 12 and the flange plate 9.

The locking pawl 16 of the receiving plate 12 participates in the connection and fixation with the large tension member 14 placed thereon, and is a clip made of spring steel wire, as shown in FIGS. 1, 4, and 5. It is intended to be used in combination with the clip 21 so as to lock and hold the clip 21 on both sides. In other words, the clip 21 is made of a single spring steel wire and is bent into an elongated U-shape when viewed from above and an approximately L-shape when viewed from the side, and one end of the approximately L-shape is bent. The connecting rod 22 straddles the upper surface of the large tension member 14, and the other end thereof is inserted into the lip groove 15 of the large extension member 14 from above as a pair of hooks 23 and locked therein. Similarly, the midway portion thereof passes along both sides of the large tension member 14 and is removably locked from below to the pair of locking claws 16 that are parallel to each other. As a secondary fulcrum, both ends of the clip 21 are firmly pressed against the large tension member 14, and the receiving plate 12
This means that the state of connection between the material and the large tension member 14 is fixed. In this case, the large tension members 14 are mounted on the horizontally flat upper surface of the receiving plate 12, and are not constrained by each other, and the clips 21 are detachable, so that the above-mentioned fixing operation can be carried out smoothly. - It is easy to carry out, and there is no need to be subject to restrictions on the size of the large pull material 14 or the position on which it is placed.

In the above structure, when constructing the underfloor support, the present invention in a lowered level state is positioned and set in advance at the target location with respect to the large lumber 14 which is suspended horizontally with the opening facing downward. After that, using the collar plate 9 and the receiving plate 12 as operating plates, rotate the screw support 7 that is integrated with the coil spring 18 (on the contrary, you may rotate the leg base 1 side), and then rotate the screw support 7 to the foot base 1. The floor support level is adjusted by raising the floor support level, and the adjusted state is fixed by tightening the adjustment nut 8.
On the other hand, at the same time, the footrest 1 is grounded and fixed on the floor slab 4. Then, as described above, the receiving plate 12 and the large tension member 14 are connected and fixed using the clips 21. Although not shown in the drawings, it goes without saying that a joist is crossed over the large joists 4, and the flooring is applied on top of the joist.

As described above, the underfloor support device of the present invention is grounded to the floor slab 4 due to its structure, and is curved into an approximately inverted U-shaped cross section that gradually widens downward from the metal plate. A leg base 1 with a horizontal seat plate 2 is formed into a concentric double bundle of a large-diameter coil spring 19 and a small-diameter coil spring 20 with different helical pitches and helical directions, and large-diameter coil springs 19 have large-diameter coil springs 19 at both upper and lower ends. A coil spring 18 in which a material receiving plate 12 and a spring receiving collar plate 9 are fixedly integrated by welding.
and; a screw socket tube 6 provided in the center of the leg base 1;
A screw support 7 is screwed into the support plate 7 so as to be able to rise and fall freely, and is fixedly integrated with the collar plate 9 at its upper end by a lock nut 11; The large tension member 14 is placed in an unfitted state through the upper surface of the cutting seat 13; one end of the large tension member 14 is bent into an elongated substantially U-shape in plan view from a single spring steel wire. A pair of hooks 2 serve as connecting rods 22 that straddle the upper surface of the large tension material 14, and the other ends thereof are removably engaged with both lip grooves 15 of the large tension material 14.
3, and by rotating the level adjustment nut 8 screwed into the middle of the screw column 7, the column 7, the coil spring 18, and the large tension member 14 can be adjusted in their entirety. , so that it can be adjusted up and down with respect to the leg stand 1 at once, and the connecting rod 22 is made to straddle the upper surface of the large tension member 14, while the hook 23 is inserted into the lip groove 15 of the large tension member 14.
The midway portion of the clip 21 that is locked to the clip 21 is removably locked from below to a plurality of locking claws 16 that are integrally bent downward in a radially symmetrical manner from the large lumber receiving plate 12. Because of the structure, the floor level adjustment and fixing of the large tension members 14 can be performed with extremely easy operation, and the rigid underfloor frame constructed from the large extension members 14 made of shaped steel and joists can be used. However, the coil spring 18 can provide appropriate elasticity.

That is, in the present invention, the coil spring 18 functioning as a so-called shock absorber is a concentric double bundle consisting of a large-diameter coil spring 19 and a small-diameter coil spring 20 whose helical pitches and helical directions are different from each other. It becomes easy to optimally balance the rigidity and elasticity of the supporting force over the entire floor, and it is possible to effectively prevent excessive elasticity or rigidity and twisting deformation such as rotation in one direction. .

Moreover, at both upper and lower ends of the large diameter coil spring 19, a receiving plate 12 of the large tension member 14 and a spring-receiving collar plate 9 are fixed and integrated by welding, and the collar plate 9 has legs. The upper end of a screw column 7 that can be raised and lowered by screwing with the table 1 is fixedly integrated with a lock nut 11, and a level adjustment nut 8 is screwed and fastened to the column 7. The adjustment nut 8 is located below the coil spring 18 and is screwed onto the screw support 7, so by rotating it to tighten or loosen it, the screw support 7, coil spring 18, and The entire large tension member 14 can be adjusted up and down with respect to the footrest 1 at once, and the floor level adjustment work can be performed with extremely high efficiency.

The leg stand 1 has a substantially inverted U-shaped cross section including the horizontal seat plate 2 integrally, and is bent from a metal plate, so it can be easily mass-produced by simple sheet metal press processing, and the coil spring 18 has a diameter of The large coil spring 19 is fixedly integrated with the large lumber receiving plate 12 and the flange plate 9 at both upper and lower ends by welding, so there is no risk of it coming off even if it encounters elastic deformation. It has excellent stability in its supporting state.

Also, when making final fine adjustments to the floor level, in the case of the present invention, the threaded support 7 of the adjustment nut 8 is in a threaded state with the footrest 1, and the footrest is inserted from below. 1, the level adjustment nut 8 does not follow the elastic movement of the coil spring 18, compared to, for example, a configuration in which the screw fastener is supported by a coil spring. Therefore, the nut 8 can be rotated smoothly while maintaining an accurate threaded state with the screw support 7, and fine adjustments can be made stably without fear of crushing the screw helix. You will be able to perform the following tasks.

Further, the large tension member 14 to which the present invention is applied is a hat-shaped steel having a pair of lip grooves 15, and when it is connected and fixed to the receiving plate 12, it is necessary to The connecting rod 22 formed at one end of the clip 21 is straddled over the upper surface of the large tension member 14, while the hooks 2 at the other end are
3 is removably engaged with the lip groove 15 of the large tension member 14, and the midway portion of the clip 21 is removably engaged with the retaining claw 16 of the receiving plate 12 from below. Because of this structure, there is no need to perform any assembly processing on the large lumber 14 of the underfloor frame structure, such as drilling a large number of through holes for bolts, and no special dedicated tools are required. The clip 21 can be engaged and disengaged without any trouble, and the workability of the above-mentioned fine adjustment is therefore greatly improved.

Moreover, as mentioned above, there is no need to perform any assembly processing on the large lumber 14, and since the large lumber 14 is fastened and fixed to the receiving plate 12 with the clips 21, the large lumber 14 can be fastened and fixed to the receiving plate 12. A plurality of locking claws 16 are integrally bent downward from the plate 12 in a radially symmetrical manner, and the large tension member 14 is simply placed on the horizontally flat upper surface of the receiving plate 12 in an unfitted state. Coupled with the structure that the clips 21 remain in place, there is no assembly restriction on the connection and fixing position by the clips 21, and the large tension material 14 can be fixed at any position in the longitudinal direction by the clips 21. It also has excellent on-site adjustment workability.

In addition, the large tension member 14 is merely mounted on the flat upper surface of the receiving plate 12 via the cushion seat 13, and is not fitted onto the flat upper surface of the receiving plate 12. It is locked and fixed by the clip 21 consisting of the large tension material receiving plate 12.
A coil spring 18 is installed between the top and bottom of the and screw support 7.
Because of the structure in which the clip 21 and the coil spring 18 are inserted, the elasticity of the clip 21 and the coil spring 18 can effectively absorb shocks in the vertical and horizontal directions, and also prevent the unpleasant sound of the metal touch. This can be said to be of great practical benefit as it is highly suitable for mass production as a device that is used in large quantities.

[Brief explanation of the drawing]

Figure 1 is a front view showing the state of use of the present invention;
The figure is a plan view, FIG. 3 is a cross-sectional view showing the intervening state of the coil spring, FIG. 4 is a side view of a modified example of the present invention in use, and FIG. 5 is a state in which the clip is locked to the receiving plate. FIG. 1... Leg stand, 7... Screw support, 9... Flange plate, 1
2... Reception plate, 16... Locking claw, 18... Coil spring, 21... Clip.

Claims (1)

[Claims for Utility Model Registration] A leg stand with a horizontal seat plate 2 which is grounded to the floor slab 4 and whose cross section is curved into an inverted U-shape that gradually expands from the metal plate downwards. 1, and a large diameter coil spring 19 and a small diameter coil spring 20 having different helical pitches and helical directions form a concentric double bundle, and large tension material receiving plates 12 and spring receiving plates are provided at both upper and lower ends of the large diameter coil spring 19. The collar plate 9 is screwed into the coil spring 18, which is fixedly integrated with the coil spring 18 by welding, and the screw receiving tube 6 provided in the center of the base 1 so as to be able to rise and fall freely, and is connected to the spring receiving collar plate 9 at the upper end thereof. It consists of a screw support 7 fixedly integrated with a lock nut 11 and a hat-shaped steel having a pair of lip grooves 15. By bending a single spring steel wire into an elongated approximately U-shape in plan view, one end of the large tension material 14
4, the connecting rod 22 is provided with a clip 21 whose other end is respectively set as a pair of hooks 23 which are releasably engaged with both lip grooves 15 of the large tension member 14, and the above-mentioned screw By rotating a level adjustment nut 8 screwed into the middle of the support 7, the entire support 7, coil spring 18, and large tension member 14 can be adjusted up and down with respect to the footrest 1 at once. , while the connecting rod 22 is placed over the upper surface of the large tension member 14, the hook 23 is inserted into the lip groove 15 of the large tension member 14.
The midway portion of the clip 21 that is locked to the large tension member receiving plate 12 is held and held in a radially symmetrical manner by a plurality of locking claws 16 that are integrally bent downward from below in a manner that allows the clip 21 to be locked and detached from below. An underfloor support device featuring: