JP2554309Y2 - Floor panel connection structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel connecting structure in which a plurality of floor panels laid on a floor are connected to each other at a position where their corners gather.

[0002]

2. Description of the Related Art A one-touch type connection structure which does not use bolts is disclosed in Japanese Patent Application Laid-Open No. 2-91352 as this type of connection structure frequently used for a free access floor. The connecting structure disclosed herein has a flange provided on an upper portion of a connecting fitting and a plurality of protrusions provided radially on a lower portion, sandwiching a corner portion of a floor panel from above and below, and protruding from a top surface of a distal end portion of each protrusion. The assembled claws are fastened in the horizontal direction with the set claws.

[0003]

In such a connecting structure, by rotating the connecting metal in the circumferential direction by about 45 degrees,
The assembled corners are fixed in the vertical direction, and a horizontal tightening force acts on the corners, so that the corners are connected to each other. If this is attempted, the rotation of the connecting bracket becomes difficult, and the workability decreases. On the other hand, if the connection fitting is simply rotated, a sufficient horizontal tightening force cannot be obtained, and the connection strength is insufficient. In addition, there is a possibility that the connection fitting may rotate by mistake after the construction.

SUMMARY OF THE INVENTION An object of the present invention is to provide a floor panel connection structure that can securely fasten corners in both horizontal and vertical directions and is easy to construct.

[0005]

According to the present invention, there is provided a floor panel connecting structure for connecting a plurality of floor panels laid on a floor surface to each other at a position where their corners gather. A plurality of rising portions each having an inverted L-shaped cross section at a corner portion of the floor panel, and moving in a circumferential direction to a rear side of a horizontal portion of the rising portion to contact the horizontal portion from below. The horizontal part of each rising part is clamped from above and below by a connector having a projection and a flange abutting from above on the horizontal part of the rising part, and the vertical part of each rising part is tightened with a ring from the outside. It is characterized by having.

[0006] Each of the upper surfaces of the plurality of projections may be inclined downward in the rotational direction of the connecting member.

[0007]

In the connection structure of the floor panel of the present invention,
By clamping the rising portion from above and below with the flange of the connecting tool and the plurality of protrusions, the assembled corner portions are fixed in the vertical direction, and the rising portion is fastened by a ring, which is sufficient. Horizontal tightening force is also obtained.
Since the connecting tool does not contribute to horizontal tightening, it can be smoothly rotated even when a sufficient horizontal tightening force is secured. The rotation of the connection tool is further smoothed by making the upper surface of each projection inclined.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an example of a connection structure embodying the present invention, and FIG. 2 is a longitudinal sectional view showing a connection state.

A plurality of floor panels 10 are laid on the floor by supporting legs (not shown). An arc-shaped depression 11 is provided at a corner of each floor panel 10. The inner peripheral edge of the depression 11 is raised upward except for both ends, and on both sides of the rising portion 12,
A notch 13 is provided. When the four corners are gathered, a circular through-hole A is formed inside the rising portion 12, and the two adjacent cutouts 13, 13 are united to form the through-hole A. Are formed around the perimeter.

The rising portion 12 has an inverted L-shaped cross section and includes a horizontal portion 12a and a vertical portion 12b. The horizontal portion 12a has a second vertical portion 12c formed at its tip by bending downward.

The connecting tool 20 has a cylindrical body 21,
At its center, a square hole 21a is provided. A flange 22 is provided on the outer peripheral surface of the upper end portion of the body portion 21, and four protrusions 23 are provided on the outer peripheral surface of the lower end portion at a pitch of 90 degrees in the circumferential direction. The trunk portion 21 has an outer diameter slightly smaller than the inner diameter of the through hole A formed inside the rising portion 12, and the flange portion 22 is further larger than the diameter of a circle formed by the outer peripheral edge of the rising portion 12. Has a large outer diameter. The four protrusions 23 are formed by four cutout holes B formed around the through hole A.
And the gap G between the projection 23 and the flange 22 is substantially the same as the height of the second vertical portion 12 c of the rising portion 12. On the upper surface of each projection 23, a connecting tool 2
An arc is inclined downward toward the zero rotation direction.

The ring 30 is an annular body made of metal, resin, or the like, and has a size to tighten the vertical portions 12b of the four rising portions 12 from outside.

According to such a connection structure of floor panels, the four floor panels 10 are connected as follows at a position where their corners gather.

When the corners of the four floor panels 10 abut each other, first, the ring 30 is fitted to the outside of each rising portion 12. As a result, the rising portions 12 are firmly fastened in the horizontal direction. Next, the connector 20
Are inserted into the four notches B from above. Then, a tool is inserted into the square hole 21a of the connecting tool 20, and the connecting tool 20 is rotated about 45 degrees in the circumferential direction. At this time, the gap G between the flange 22 and the projection 23 is
Since the thickness is substantially the same as the thickness of the protrusion c, and the upper surface of each projection 23 is inclined, the connecting member 20 rotates smoothly. Due to the rotation of the coupling tool 20, each projection 23 is located substantially at the center of the rising portion 12. Thereby, each horizontal portion 12a is sandwiched between the flange 22 and each projection 23 from above and below, and the corner portion is fixed also in the vertical direction.

The floor panel 10 shown here
Can also be used on the back side. In that case, as shown in FIG. 3, the second vertical portion 12c formed on the horizontal portion 12a of the rising portion 12 is tightened from the outside by the ring 30 ', while the horizontal portion 12a is vertically tightened by the connecting tool 20'. Pinch. As shown in FIG. 4, the ring 30 'is provided with a notch 31' for passing each projection 23 'of the connecting tool 20'. This cut 31 '
As a result, the projection 23 'can be lengthened, and the horizontal portion 12a can be securely fixed. 22 'is a flange of the connecting tool 20'.

[0016]

[Effects of the Invention] As is clear from the above description, the floor panel connection structure of the present invention has a rising portion at the corner of the floor panel, and each rising portion is formed by a ring at a position where the corners are gathered. Since the fastening is performed, the floor panels can be securely connected in the horizontal direction. On the other hand, the connecting member is fixed only in the vertical direction of the corner portion and does not contribute to the tightening in the horizontal direction. Therefore, even when a sufficient horizontal tightening force is secured, the connecting member rotates smoothly to facilitate construction.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of a connection structure embodying the present invention.

FIG. 2 is a longitudinal sectional view of the connection structure.

FIG. 3 is a longitudinal sectional view showing another connecting structure.

FIG. 4 is a perspective view of a ring used in the connection structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Floor panel 12 Start-up part 12a Horizontal part 12b Vertical part 20 Connecting tool 22 Flange 23 Projection 30 Ring

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Junji Furuichi 1-3-1 Otemachi, Chiyoda-ku, Tokyo Sumitomo Metal Industries, Ltd.

Claims (2)

(57) [Scope of request for utility model registration] 1. A floor panel connection structure for connecting a plurality of floor panels laid on a floor surface at a position where the corners are gathered, wherein a cross section is formed at the corner of the floor panel. An inverted L-shaped rising portion is provided, and a plurality of protrusions that move to the back side of the horizontal portion of the rising portion by circumferential rotation and contact the horizontal portion from below, and abut the horizontal portion of the rising portion from above. A connecting structure for floor panels, wherein a horizontal portion of each rising portion is sandwiched from above and below by a connecting tool having a flange in contact therewith, and a vertical portion of each rising portion is fastened from outside by a ring. 2. The floor panel connection structure according to claim 1, wherein each of the upper surfaces of the plurality of projections is inclined downward in the rotation direction of the connection tool.