JPH0673868A - Free access floor construction - Google Patents

Abstract

PURPOSE:To simplify the constructing work, prevent lateral dislocation of a floor panel, prevent generation of stepped difference of the upper faces between adjoining floor panels, perform detachable fitting of the floor panel, and easily execute such work. CONSTITUTION:Supporting legs 12 of the four corner parts of a floor panel 1 are mounted into common receiving seat members 2 by the fitting constructions together with the supporting legs 12 of the adjoining floor panels 1, and the fitting part 22 is provided with an elastic engaging means, and the supporting leg 12 is controlled so as not to move upward out of mischief. In this engaging means, the engaging face is engaged with an inclined face, and by adding large pulling up force, the engagement is released and the supporting legs can be drawn out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a free access floor structure laid in an office room, a computer room or the like where a large number of electronic devices and communication devices are installed,
That is, it relates to a so-called raised floor structure.

[0002]

2. Description of the Related Art With the increase in the number of electronic communication equipments and office equipments installed indoors, free access floors having double floors have been used more and more recently in order to functionally process the wiring around them. There is. As such a free access floor structure, square unit floor panels having supporting legs of a predetermined height at the four corners of the lower surface are laid on a base floor surface such as concrete and the floor panel group is provided with a wooden floor material, a carpet, etc. Laying the decorative flooring of the above, or prepare the above-mentioned floor panel to which the decorative flooring such as a carpet or a wooden flooring of the corresponding shape is attached in advance and prepare the floor panel with the decorative material on the base floor surface. The floor structure that is lined up is often used.

However, there are the following problems in the conventional access floor structure.

That is, the base floor surface such as a concrete slab on which the floor panel is laid is not necessarily finished to a sufficient horizontal surface. For example, as shown in a slightly exaggerated manner in FIG. 15, in many cases, the concrete base floor surface (G) has some unevenness. Therefore, when the floor panels (P ₁ ) (P ₂ ) are laid side by side, a step (L) may occur between the adjacent floor panels (P ₁ ) (P ₂ ). If such a step (L) is large, the floor finish surface is affected, which is harmful. When it is small, it does not cause any big trouble especially when using a soft decorative flooring such as carpet or vinyl chloride sheet flooring for finishing, but when using a hard flooring such as wooden decorative flooring, Even with a small unevenness, the floor surface is finished unevenly, and there are floating parts that have poor adhesion to the base, which adversely affects the finish.

In addition, when a wooden floor material is used as the decorative floor material, a floor step may occur over time even if it is flatly applied. That is, after the construction, the wooden flooring material warps due to changes in indoor humidity and moisture, and the legged floor panel integrated with the wooden flooring material tends to be lifted. For this reason, in particular, when the joint portion of the wooden flooring material overlaps the boundary portion between the adjacent panel with legs, a step is likely to occur at the joint portion. Such a tendency is more likely to occur when hot carpet is laid or a stove is heated in winter.

Furthermore, in the above-mentioned conventional free access floor structure, the individual floor panels with legs are not fixed on the base floor surface. Therefore, there is a possibility that the floor panel may be laterally displaced due to an impact received by walking on the floor surface, movement of furniture, or the like, or other external force applied from the floor surface.

[0007] Conventionally, as a measure for preventing such lateral displacement, means as disclosed in Japanese Utility Model Laid-Open No. 62-38350 has been proposed. This prior proposal uses a dish-shaped support leg connecting member (100) as shown in FIG. 16, and uses a support leg (101) in which adjacent floor panels with legs (P ₁ ) (P ₂ ) (Pn) gather. They are connected to each other by being fitted into a common connecting member (100) to prevent lateral displacement of each floor panel.

[0008]

However, the above-mentioned prior art has the following problems, and cannot be suitably used particularly when a wooden floor material is used.

That is, when the dish-shaped connecting member (100) is simply placed on the concrete base floor surface (G) for construction, the connecting member (100) moves freely on the floor surface. Therefore, it is difficult to perform the work for disposing the floor panels (P ₁ ) (P ₂ ) ... (Pn). Therefore, it is necessary to fix the connecting member (100) on the base floor surface (G) in advance with an adhesive or a bolt, but in this case, the positioning member itself must be accurately positioned and fixed. However, the fixing work itself is extremely troublesome.

In addition, since the dish-shaped connecting member (100) merely receives the supporting legs (101) of the floor panels (P ₁ ) (P ₂ ), it has no vertical restraining force. Therefore, it is impossible to prevent the floor panels (P ₁ ) and (P ₂ ) from being lifted up by vibration or impact. This means that, especially when a wooden floor material is used for finishing, it is impossible to prevent the floor panel from being lifted up due to the influence of expansion and contraction or warpage of the wooden floor material as described above, and as a result, the adjacent floor panel (P ₁ ) (P ₂ ) Between the floor surface or a step difference is generated, or a part of the flooring floats, which leads to problems such as deteriorating the feeling of walking or generating stagnation.

The present invention has been made in view of the above problems.
Providing a free access floor structure that has various functions such as ease of construction, prevention of floor panel lateral displacement, prevention of floor panel lifting, and flexibility of replacement for dealing with floor panel damage. It was made for the purpose.

[0012]

In the above object, the present invention is a floor panel having support legs at least at a corner of an upper panel portion and a floor panel placed on a base floor surface and adjacent to each other. A receiving member for a joint for receiving and connecting the supporting legs to each other, wherein the supporting leg and the receiving member have male and female fitting means having a restraining force against relative movement in the horizontal direction; After joining, they are connected to each other via an engaging means that regulates the vertical relative movement of the supporting leg, and
Moreover, the engaging means is formed into an inclined surface having an acute angle with respect to the vertical line, so that the engagement is released by applying a large artificial pulling direction force that overcomes the engaging force. The free access floor structure is characterized in that the supporting leg can be detached and separated from the joint seat member.

In a preferred embodiment, the male-female fitting means is formed with a tubular support leg on the floor panel side and a corresponding cross-sectional shape that allows the lower end of the support leg to be fitted internally or externally. And a short tubular fitting portion on the side of the seat member.

Further, the engaging means is an elastic engaging piece provided on either one of the supporting leg on the floor panel side and the fitting portion on the receiving member side, and the other member so as to elastically engage the elastic engaging piece. And the corresponding engaged portion provided on the.

Furthermore, in order to further secure the engaging force of the engaging means, at least one of the member having the engaging piece and the member having the engaged portion is a backup for the engaging means. The elastic tongue piece is provided so as to project, and the tip of the elastic tongue piece is positioned in the proximity or contact state so as to face the back of the engaging portion of the tip end portion of the engaging piece.

[0016]

[Operation] By fitting the supporting leg of the floor panel to be adjacently arranged to the corresponding fitting portion of the seat member positionally fixed by the floor panel previously arranged on the concrete base floor surface,
Arrangement construction of floor panels is performed sequentially. By fitting the support leg of the floor panel to the seat member, relative lateral displacement of the floor panel is prevented via the seat member. On the other hand, after the construction, since the upward movement of the floor panel is restricted by the engaging means, the lifting of the floor panel is prevented, and the floor surface is not stepped. On the other hand, since the engaging surface of the engaging means is inclined, the individual floor panels can be removed by pulling it up with a strong force, which in turn can be replaced.

[0017]

【Example】

Embodiment 1 FIG. 1 shows an outline of a construction state of a free access floor structure according to a first embodiment of the present invention. (1) is a floor panel with a rectangular supporting leg, (2) is an adjacent floor panel (1)
The joint seating member arranged on the concrete base floor surface (G) at the intersection of (1), and (3) a decorative flooring material for finishing.

The floor panel (1) and the seat member (2)
Is preferably a synthetic resin molded product, for example, a synthetic resin molded product of polyethylene, polypropylene, polyester, ABS or the like, but may be made of a metal material such as aluminum or steel, a wood material, or a ceramic material. Further, a combination of them may be used.

As the decorative flooring material (3), a wooden flooring material is used in this embodiment, and a square flooring material having a size corresponding to each floor panel (1) is previously attached and integrated. Instead of this, tile carpet, vinyl chloride tile or the like may be used. Furthermore, after laying a plurality of floor panels (1),
A long carpet, a vinyl chloride sheet floor material, a tatami mat, a metal floor material, a stone floor material, etc. may be laid on the entire upper surface.

As shown in FIGS. 2 and 3, the floor panel (1)
Has a side length of 248 mm and an apparent thickness of 14.
A rectangular upper panel portion (11) having a size of 5 mm,
It has a supporting leg (12) having a length of 30 mm which is integrally projected from the four corners. Although the upper surface panel portion (11) is shown in a simplified manner in the drawing, the plate-shaped portion is formed as a net-like perforated plate, and a number of reinforcing ribs are formed on the lower surface of the plate-shaped portion to give a predetermined thickness and strength. Is. On the other hand, the support leg (12) is formed in a rectangular tubular shape having a rectangular cross section. Then, two slits (14) parallel to the lower end are provided on the two outer side surfaces, that is, the two adjacent side walls located on the outer peripheral side of the floor panel (1).
By cutting (14), elastic engagement pieces (13) (13) are formed between them. The engaging piece (13) has an engaging convex portion (15) having a substantially triangular cross section on the outer surface of the lower end.

On the other hand, in the seat member (2), four short cylindrical support leg receiving fitting portions (22) are formed in a grid shape by projecting a rectangular surrounding wall on a square bottom plate portion (21). Is formed in. The fitting portion (22) is formed in a size corresponding to the support leg (12) of the floor panel (1) so that the lower end portion thereof can be fitted properly. In addition, the surrounding walls of each fitting portion (22) are formed so as to be continuous with each other on the outer peripheral surface of the seat member (2) in order to improve the strength. In addition, each fitting portion (22) has an engaging hole (2 corresponding to the engaging piece (13) of the support leg (12) on two adjacent wall surfaces located inside thereof.
3) is provided, and an elastic tongue piece (24) for backup, which has an inverted L-shaped cross section, is integrally projected from the bottom plate portion (21) in correspondence with these engaging holes (23).

By the way, as shown in detail in FIG. 4, the engaging projection (15) of the elastic engaging piece (13) is formed in a triangular cross section, but its upper surface (15a) becomes an engaging surface. )
The angle (θ ₁ ) with respect to the vertical line is preferably 30 to 8
It is formed on a slope having an acute angle of about 0 °, particularly preferably about 60 °. On the other hand, the lower surface (15b) which serves as a guide surface when fitting the supporting leg is formed on an inclined surface having an angle (θ ₂ ) with respect to the vertical line of preferably 20 to 60 °, particularly preferably about 30 °. There is. The angle (θ ₁ ) of the slope of the upper surface (15a) is such that when the engagement piece (13) is engaged, a sufficient engagement force is exerted, and when a large artificial tripping force is applied, the engagement is performed. Is particularly important to ensure that the angle (θ ₁ ) is 80 °.
In a state of exceeding, a large engaging force can be obtained, but it becomes difficult to release it thereafter, and conversely, if it is less than 30 °, a sufficient engaging force cannot be expressed.

Further, the engaged portion (23a) with which the upper edge end surface of the engaging hole (23) on the seat member (2) side, that is, the upper surface (15a) of the engaging convex portion (15) is engaged. Is also formed on an inclined surface corresponding to the upper surface (15a). However, it is not always necessary that both the upper surface of the engaging convex portion (15) and the engaged portion (23a) with which the engaging convex portion (15) is engaged are formed on the inclined surface. Either one of them may be formed on a horizontal surface or an inclined surface in the opposite direction. In short, the engagement surface of the engagement convex portion (15) and the engaged portion (23a) with which the engagement convex portion (15) engages is formed as an inclined surface which forms an acute angle with respect to the vertical line. The purpose is achieved. That is, the engagement mode of the engagement portion in the engagement means of the present invention is
In addition to the engagement between the slopes having mutually corresponding angles as in the first embodiment, various types such as slopes and circular arc surfaces, circular arc surfaces, or inclined surfaces having mutually different inclination angles are used. However, in any case in the present invention, the contact surface between the engaging convex portion and the engaged portion, or the plane where the tangents in these linear contact portions are present is a vertical line. On the other hand, any material may be used as long as it forms a slope with an acute angle. Therefore, the term "engagement surface" in this specification is meant to include both the contact surface and the tangent line in the contact portion. This will be easily understood by referring to various modifications and other embodiments described later.

The elastic tongue (24) for backup is shown in FIG.
As shown in Fig. 7, when the engaging piece (13) is engaged with the seat member (2) side, its tip (24a) is behind the engaging convex portion (15) of the engaging piece (13). , That is, it is located close to or in contact with the back side. This action complements the engaging force of the engaging piece (13) and prevents the engaging piece (13) from being unintentionally disengaged from the engaged portion (23a). On the other hand, the presence of the elastic tongue piece (24) must not prevent the fitting of the support leg (12) to the fitting portion (22), and the artificial removal of the engaging piece (13). It should not make it impossible. Elastic tongues for that (24)
The installation position, resilience and shape must be carefully considered. Based on such consideration, in the embodiment, in order to prevent the involuntary movement of the engagement piece (13) while retaining sufficient elasticity, the engagement piece (13) is formed in an inverted L-shaped cross section and has a tip ( 24a) The surface is rounded.

In the above, the construction of the free access floor is carried out, for example, by fitting the seating members (2) to the four supporting legs (12) of the first one floor panel (1), respectively. (1) is arranged on the concrete base floor surface. Then, riding on the floor panel (1), the two supporting legs (12) (12) of the next floor panel (1) are fitted to the preceding seating member (2) and arranged. . At this time, the other two receiving legs (12) of the next floor panel (1) are fitted and attached with other receiving members (2) in advance. By repeating such work, the floor panel (1) is laid on the entire floor surface.

In addition, for example, four floor panels (1) are combined in advance, and one decorative flooring material (3) of a corresponding size is attached to the upper surface of the floor panel (3) to form an integrated floor panel,
These may be laid out side by side on the concrete base floor surface (G). Further, the laying construction of the decorative flooring material may be performed after the laying construction of the floor panel (1).

Further, in laying such a floor panel (1), as shown in FIG. 3, in order to absorb the unevenness of the concrete base floor surface (G) and to reliably prevent the floor squealing. As illustrated, an elastic underlaying material (30) such as a rubber sheet, a soft vinyl chloride sheet, a synthetic resin or a rubber foam sheet may be provided on the lower surface of the seat member (2).

By the way, at the time of laying construction of the floor panel (1) as described above, the supporting leg (12) is attached to the seat member (2).
When fitted into the corresponding fitting portion (22) of No. 1, in the process, the backup elastic tongue piece (24) is engaged with the engaging piece (1) as shown in FIG.
It is pushed by the tip of 3) and elastically deforms downward to engage the engaging piece (1
Allow the passage of 3). Then, when the engaging projection (15) of the engaging piece (13) engages with the engaged portion (23a) on the seating member (2) side, the tongue (24) elastically restores to the state shown in FIG. Returning to the action position shown, the engagement piece (13) is prevented from swinging in the counterclockwise direction in the figure by being restrained from behind, and the engagement piece (13) is unintentionally disengaged. Prevent.

After the construction, the floor panel (1) is
Since the support leg (12) is fitted and held by the seat member (2), the adjacent floor panels (1) and (1) are restrained from each other, and relative lateral displacement is reliably prevented. In addition, the engagement piece (13) is engaged with the seat member (2) side, so that the vertical relative movement is restricted. Therefore, the floor panel (1) is prevented from being lifted, and a step difference is prevented from being generated on the panel floor surface regardless of the presence of some unevenness of the concrete base floor surface (G). In addition, when a wooden floor material is used as the decorative floor material (3), even if the wooden floor material expands and contracts and warp stress is generated, an impact such as an earthquake may be applied. Moreover, even if a walking load or the like is applied to one end of the floor panel (1) and a flip-up force acts on the other end, harmful lifting of the floor panel (1) is prevented. It

However, since the free access floor is used for piping, wiring, etc. under the floor, it may be necessary to dispose them or perform repair and inspection after the construction. In addition, there are cases where partial replacement of the decorative flooring material is necessary due to partial stains or damages. Therefore, in such a case, it is often necessary to subsequently remove the floor panel (1) and then reattach it or replace it.
In response to such a request, in the floor structure according to the present invention, a predetermined floor panel (for example, using a vacuum suction device using a sucker such as a soccer or using an engaging lifter using a surface fastener) It is possible to remove it by artificially applying a large pulling force to 1). At this time, when the floor panel (1) is strongly pulled up, the engagement surface between the engagement protrusion (15) of the engagement piece (13) and the engaged portion (23a) on the receiving member (2) side. Since they are engaged with each other on the inclined surface with an acute angle as described above, the engaging pieces (13) are elastically bent as shown in FIG. 6 to release the engagement relationship. At the same time, the backup elastic tongue (24) elastically deforms upward to allow the engaging piece (13) to be pulled out and raised. Therefore, the supporting leg (12) can be removed from the fitting portion (22) on the side of the seat member (2) and the predetermined floor panel (1) can be removed. Then, after this removal, the floor panel (1) can be reattached in the same manner as the above-mentioned construction, whereby the floor can be easily restored.

FIG. 7 shows a modification of the engaging structure of the engaging piece (13), in which the engaging convex portion (16) is formed in an arcuate cross section. In this case, the contact portion with the engaged portion (23a) on the side of the seating member (2) is linear, but the engaging surface formed by the plane where the tangent line at this contact portion is substantially present. In addition, a slanting surface that allows the engaging piece (13) to be removed and moved is formed.

Embodiment 2 FIGS. 8 and 9 show a second embodiment of the present invention. In this embodiment, the rectangular tubular support leg (112) of the floor panel (101) is fitted so as to fit snugly inside the short tubular fitting portion (122) of the seat member (102). It is formed to be small in size. Corresponding to this, the engagement piece (123) is provided on the side of the seat member (102) so as to rise from the bottom plate portion (121) thereof, and the outward engaging convex portion (125) of the tip thereof is provided. , The engaged portion (11) formed of a ridge provided on the inner surface of the supporting leg (112)
5) to be engaged. The backup elastic tongue piece (114) is provided on the inner surface of the support leg (112) so as to protrude from the inner surface of the support leg (112) so as to face the engaged portion (115). Other configurations, operations, and the like are similar to those in the first embodiment.

Embodiment 3 This embodiment is shown in FIGS. 10 and 11, and a modification thereof is shown in FIG.

In this embodiment, the supporting leg (212) of the floor panel (201) is fitted on the outside of the fitting portion (222) of the seat member (202). And the engaging piece (22
3) are provided one by one inside the fitting portion (222) on the side of the seat member (202) so as to stand up from the bottom plate portion (221) in a confronting manner. The engaging projections (225) are provided in opposed relation to the tips of the pair of engaging pieces (223) (223). Corresponding to this, the engaging protrusions (22) are fitted into the support legs (212) by fitting between the engaging pieces (223) (223).
5) A thin strip-shaped engaged portion (215) that engages with the lower surface of (225) is provided horizontally.

Therefore, in the case of the third embodiment, the supporting leg (212
) Is forcibly fitted to the fitting portion (222) of the seat member (202), so that the engaging pieces (223) (22) (22) facing each other.
3) elastically bends in the separating direction to receive the engaged portion (215) between them, and engages with the lower surface side of the engaging convex portion (225) to prevent upward movement of the support leg (212). .

The modified example shown in FIG. 12 is the engaged portion (215a).
Is formed into a rod-shaped body having a hexagonal cross section.

The other structure and operating principle are substantially the same as those in the first embodiment.

Embodiment 4 In this embodiment shown in FIGS. 13 and 14, the rectangular tubular support leg (312) of the floor panel (301) is located outside the fitting portion (322) on the seat member (302) side. It is supposed to be fitted. A pair of engaging pieces (323) (323) are provided on a peripheral wall of the fitting portion (322), that is, a part of an outer side wall adjacent to the surrounding wall.
) Is formed, and an engaging protrusion (325) having an arc-shaped cross section is provided on the outer surface of the tip end portion thereof. Correspondingly, the engaged portions (31 having a triangular cross section) are provided at two locations on the inner surface of the supporting leg (312).
5) and the supporting leg (312) is fitted in the fitting portion (322), as shown in FIG.
) Is engaged with the slope on the upper surface side of the engaged portion (315).

Other configurations and operations are substantially the same as those in the first embodiment.

While various embodiments of the present invention have been shown above,
The invention is not limited to the structures of these embodiments. Various design changes can be made within the scope of the configuration shown in the first claim.

For example, in each of the above-mentioned embodiments, the top panel portion of the floor panel is formed in a square shape.
The shape is not limited to this, and may be any shape as long as adjacent floor panels can be laid in close contact with each other. For example, it may be formed in a triangle, a hexagon, or the like.
Further, in the embodiment, one engaging means of the supporting leg and the engaging portion has two engaging means respectively, but the number of engaging means per one engaging means is arbitrary. Yes, and at least one or more is sufficient.

[0042]

As described above, according to the present invention, first, the adjacent floor panels have their supporting legs fitted to the common seat member, and the relative movement in the horizontal direction is restrained via the seat member. It is supposed to be. Therefore, the floor panel does not shift laterally. In addition, prevent the occurrence of steps on the floor surface due to the unevenness of the concrete base floor surface.

Further, in the state where the support leg is fitted in the fitting portion, the both are restricted in relative movement in the vertical direction by the engaging means by the engaging piece and the engaged portion, for example. Therefore, involuntary lifting of the floor panel is prevented,
Prevents unevenness on the floor. This is particularly beneficial when using wood flooring for decorative flooring. That is, even if the force of lifting a given floor panel acts on it due to the expansion and contraction or warpage of the wooden floor material, the adjacent floor panel prevents the floor material from being lifted up through the seat member. Even when the joint portion of the wooden flooring material is aligned with the boundary portion of the panel, a step difference is prevented from occurring, and as a result, a floor panel to which the tiled wooden flooring material as shown in Example 1 is preliminarily attached. This enables simple free access floor construction.

By having the above-mentioned engaging means,
Installation can be performed easily by sequentially fitting the support legs of the next floor panel to the seating members that have been fitted and mounted in advance on the support legs of the floor panel that was laid in advance and fixed in position. The workability is good.

Further, the engaging means has a so-called inclined surface engaging structure in which the engaging surface forms an acute-angled inclined surface, and the floor panel can be removed by artificially applying a large pulling force. Has been made. Therefore, while maintaining the above-mentioned lifting prevention function, after the construction, the predetermined floor panel is partially removed to inspect the floor and pipes.
This is convenient because wiring and the like can be laid and repaired without any trouble, and damaged floor panels can be easily replaced.

According to the second aspect of the present invention, the supporting leg of the floor panel can be firmly restrained by the seat member, and the fitting and attaching work of the supporting leg to the seat member can be easily performed. It is advantageous in terms.

According to the third aspect of the invention, the engaging means can be made to have the simplest structure and the reliable operation.

Further, according to the fourth aspect, the engaging force of the engaging means can be improved, and the function of preventing the floor panel from rising can be made more reliable.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a laying construction state of a floor panel according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a floor panel and a seat member of the first embodiment separately.

FIG. 3 is a cross-sectional view of essential parts showing a state in which the floor panel is being laid and constructed in the first embodiment.

FIG. 4 is a cross-sectional view of an essential part showing a coupled state of a support leg of a floor panel and a seat member in the first embodiment.

FIG. 5 is a cross-sectional view showing a state in the middle of fitting when the support leg of the floor panel is fitted to the receiving member in the first embodiment.

FIG. 6 is a cross-sectional view showing a state in which the support leg is being removed from the seat member when the floor panel is removed in the first embodiment.

FIG. 7 is a sectional view showing a modified example of the engagement means in the first embodiment.

FIG. 8 is a vertical cross-sectional view showing the supporting leg portion of the floor panel of the second embodiment in a separated state from the corresponding fitting portion of the seat member.

FIG. 9 is a vertical cross-sectional view showing a fitting and connection state of a support leg with a seat member in the second embodiment.

FIG. 10 is a partially cutaway perspective view showing a floor panel and a seat member of the third embodiment separately.

FIG. 11 is a vertical cross-sectional view showing a fitting and connecting state of the support leg to the seat member in the third embodiment.

FIG. 12 is a sectional view of an essential part showing a modified example of the engagement means in the third embodiment.

FIG. 13 is a vertical perspective view showing a support leg portion of a floor panel of a fourth embodiment in a state where a corresponding fitting portion of a seat member is separated.

FIG. 14 is a vertical cross-sectional view showing a fitting and connection state of a support leg with a seat member in the fourth embodiment.

FIG. 15 is a schematic explanatory view showing a laid state of a conventional floor panel.

FIG. 16 is a schematic explanatory view showing another example of a laid state of a conventional floor panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Floor panel 2 ... Receiving member 11 ... Upper surface panel part 12 ... Support leg 13 ... Engaging piece 15 ... Engaging convex part 15a ... Upper surface (engaging surface) of engaging convex part 22 ... Fitting part 23 ... Engaging Hole 23a ... Engagement portion 24 ... Backup elastic tongue piece

Claims (4)

[Claims] 1. A floor panel having a support leg at least at a corner of an upper panel portion, and a joint mounted on a base floor surface for receiving and connecting the support legs of adjacent floor panels to each other. And a seating member for use with the support leg, and the supporting leg and the seating member restrict the vertical relative movement of the support leg after the fitting by fitting means having a restraining force against relative movement in the horizontal direction. A free access floor structure, characterized in that the engaging means is mutually coupled via an engaging means, and the engaging surface is formed as an inclined surface forming an acute angle with respect to a vertical line. . 2. The seating member, wherein the fitting means has a tubular support leg on the floor panel side and a corresponding cross-sectional shape that allows the lower end of the support leg to be fitted internally or externally. The free access floor structure according to claim 1, wherein the free access floor structure comprises a short tubular fitting portion on the side. 3. The engaging means comprises an elastic engaging piece provided on one of the supporting leg on the floor panel side and the fitting portion on the receiving member side,
The free access floor structure according to claim 2, wherein the free access floor structure is formed of a corresponding engaged portion provided on the other member so as to be elastically engaged. 4. An elastic tongue piece for backup with respect to the engaging means is projectingly provided on at least one of the member having the engaging piece and the member having the engaged portion, and the tip of the elastic tongue piece is the engaging member. 4. The front side of the engaging portion of the joint piece is located behind and in a close or contact state.
Free access floor structure described.