JP2013096168A - Cover structure and floor panel using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cover structure capable of improving strength of a cover member and preventing deformation of the cover member when a large load is applied from above it, and a floor panel using it.SOLUTION: The cover structure includes: a first cover member 22 having a flat plate part 24 with a U-shaped opening recess 24c formed at a side part, engaging projection parts 24g projected in parallel from opposing side parts 24d of the opening recess 24c, fitting recesses 24i formed at opening ends of the side parts 24d, and an erected part 26 provided on a lower surface of the flat plate part 24; and a second cover member 28 having a plate part for which a thickness upper half part 30 is formed wider than a thickness lower half part 32, a reinforcement part 34 to be fitted to hold the engaging projection parts 24g of the first cover member 22 between the reinforcement part 34 and the thickness upper half part 30 of the plate part, and a fitting projection part 30d provided on a side part on the opposite side of the side part provided with the reinforcement part 34 to be fitted with the fitting recess 24c of the first cover member 22.

Description

  The present invention relates to a lid structure used for a free access floor structure by attaching a lid member to an opening formed in a floor panel, and a floor panel using the lid structure.

  A floor panel is used for a free access floor structure, and is provided above a foundation floor formed by a concrete material or the like constituting a part of a building structure with a space therebetween.

  FIGS. 12 to 14 are views referred to for explaining the structure of the conventional floor panel 4 and the lid member 6 used therefor.

  As shown in FIG. 12, the conventional floor panel 4 is formed with an opening 4a that is cut out so as to enter a substantially rectangular shape at the lower side portion in the figure, and using this opening 4a, Wiring etc. could be pulled out from under the floor on the floor.

  Then, as shown in FIG. 13, the three substantially U-shaped side portions constituting the opening 4a of the floor panel 4 are bent downward from the upper surface 4d of the floor panel 4 so that the cross section is tapered. Taper portion 4b and a flange portion 4c bent into a flange shape so as to protrude horizontally outward from the lower end portion of the taper portion 4b.

  On the upper surface of the flange portion 4c, a horizontal step surface 4e was formed at a position where the height was lowered by one step from the upper surface 4d of the floor panel 4.

  When such a conventional floor panel 4 is used in a free access floor structure with the opening 4a being opened, not only does dust etc. fall under the floor from the opening 4a and accumulate, but also the heels of high heel shoes. It was dangerous because the heel of the shoe was depressed and the toe of the shoe was caught.

  For this reason, in the conventional floor panel 4, the cross section is formed in an L shape as shown in FIG. 14 on the step surface 4e on the upper surface of the flange portion 4c of the opening 4a as shown in FIG. The long side plate portion 6a having the longer dimension in the cross section of the lid member 6 was placed to close the opening portion 4a of the floor panel 4 (see Patent Document 1).

  When the long side plate portion 6a is placed on the stepped surface 4e of the flange portion 4c in this way, the lid member 6 is configured to close all the openings 4a of the floor panel 4.

  On the other hand, instead of the long side plate portion 6a, the lid member 6 is configured such that the short side plate portion 6b having a shorter dimension in the L-shaped cross section of the lid member 6 is placed on the step surface 4e of the flange portion 4c. By changing the posture 6, only a part of the opening 4 a of the floor panel 4 can be closed.

  As another conventional lid structure, as shown in Patent Document 2, a notch is formed in the lid body attached to the opening of the floor panel, and a lid member smaller than the lid body is attached to the notch. There was also a thing.

JP 2003-41753 A Japanese Patent Laid-Open No. 10-248146

  However, the lid member 6 used in the conventional floor panel 4 has a structure in which the section of the plate member is merely bent in an L shape, so that its strength is not sufficient and a large load is applied from above. When added, there was a problem that the cover member 6 may be deformed.

  Therefore, in view of the above problems, the present invention improves the strength of the lid member and prevents the lid member from being deformed when a large load is applied from above. It is an object of the present invention to provide a floor panel using the above.

In order to solve the above problems, the lid structure according to the present invention is:
A lid structure attached to the opening of the floor panel,
A flat plate portion in which a U-shaped opening concave portion is formed on the side portion;
An engagement protrusion formed so as to protrude from the opposite side portions of the opening recess and to be parallel to the side portion;
A fitting recess formed at the opening end of the side portions of the opening recess facing each other;
A first lid member having a standing portion provided on the lower surface of the flat plate portion;
A plate part in which the upper half part is formed wider than the lower half part; and
A reinforcing portion that is provided on a side portion of the lower surface of the plate portion and fits with the upper half portion of the plate portion so as to sandwich the engaging protrusion of the first lid member;
A second lid member having: a fitting convex part which is provided on a side part opposite to the side part provided with the reinforcing part of the plate part and which fits with the fitting concave part of the first lid member; It is characterized by comprising.

The lid structure according to the present invention is
A flange portion projecting outward from the upper end surface of the standing portion is formed on the peripheral edge portion of the flat plate portion.

The lid structure according to the present invention is
An arc-shaped recess is formed on the leading end side of the plate portion inserted into the opening recess.

In addition, in order to solve the above problems, the floor panel according to the present invention is:
A floor panel having an opening,
A flat plate portion in which a U-shaped opening concave portion is formed on the side portion;
An engagement protrusion formed so as to protrude from the opposite side portions of the opening recess and to be parallel to the side portion;
A fitting recess formed at the opening end of the side portions of the opening recess facing each other;
A first lid member having a standing portion provided on the lower surface of the flat plate portion;
A plate part in which the upper half part is formed wider than the lower half part; and
A reinforcing portion that is provided on a side portion of the lower surface of the plate portion and fits with the upper half portion of the plate portion so as to sandwich the engaging protrusion of the first lid member;
A second lid member having: a fitting convex part which is provided on a side part opposite to the side part provided with the reinforcing part of the plate part and which fits with the fitting concave part of the first lid member; A lid structure provided with is attached to the opening.

The floor panel according to the present invention is
The opening recess is formed in a side portion of the flat plate portion closer to the center portion of the floor panel.

According to such a lid structure of the present invention,
A lid structure attached to the opening of the floor panel,
A flat plate portion in which a U-shaped opening concave portion is formed on the side portion;
An engagement protrusion formed so as to protrude from the opposite side portions of the opening recess and to be parallel to the side portion;
A fitting recess formed at the opening end of the side portions of the opening recess facing each other;
A first lid member having a standing portion provided on the lower surface of the flat plate portion;
A plate part in which the upper half part is formed wider than the lower half part; and
A reinforcing portion that is provided on a side portion of the lower surface of the plate portion and fits with the upper half portion of the plate portion so as to sandwich the engaging protrusion of the first lid member;
A second lid member having: a fitting convex part which is provided on a side part opposite to the side part provided with the reinforcing part of the plate part and which fits with the fitting concave part of the first lid member; By having
By improving the strength of the lid member, it is possible to prevent the lid member from being deformed when a large load is applied from above.

Moreover, according to such a floor panel of the present invention,
A floor panel having an opening,
A flat plate portion in which a U-shaped opening concave portion is formed on the side portion;
An engagement protrusion formed so as to protrude from the opposite side portions of the opening recess and to be parallel to the side portion;
A fitting recess formed at the opening end of the side portions of the opening recess facing each other;
A first lid member having a standing portion provided on the lower surface of the flat plate portion;
A plate part in which the upper half part is formed wider than the lower half part; and
A reinforcing portion that is provided on a side portion of the lower surface of the plate portion and fits with the upper half portion of the plate portion so as to sandwich the engaging protrusion of the first lid member;
A second lid member having: a fitting convex part which is provided on a side part opposite to the side part provided with the reinforcing part of the plate part and which fits with the fitting concave part of the first lid member; By attaching a lid structure provided with to the opening,
By improving the strength of the lid member, it is possible to prevent the lid member from being deformed when a large load is applied from above.

1 is a diagram showing a lid structure 20 and a floor panel 4 using the lid structure 20 according to an embodiment of the present invention, and an enlarged view of the lid structure 20 attached to the opening 4a of the floor panel 4 and its vicinity. It is an expansion perspective view. FIG. 3 is an exploded top view showing a state before a second lid member is inserted into the first lid member 22 shown in FIG. 1. It is a top view which shows the state which the 2nd cover member 28 inserted in the 1st cover member 22 shown in FIG. 1, and was fitted. It is a top view of the 1st lid member 22 in the state where the 2nd lid member 28 is not inserted. It is a front view of the 1st cover member 22 shown in FIG. It is a side view of the 2nd cover member 28 shown in FIG. It is the front view seen from the fitting convex part 30d side of the 2nd cover member 28 shown in FIG. FIG. 3 is a top view of a second lid member 28 shown in FIG. It is the bottom view which turned the 2nd cover member 28 shown in FIG. 8 upside down. It is sectional drawing of the AA arrow of the 1st cover member 22 and the 2nd cover member 28 which are shown in FIG. It is sectional drawing of the 1st cover member 22 and the 2nd cover member 28 which are shown in FIG. 3 by the BB arrow. It is the whole top view which shows the conventional and the floor panel 4 which concerns on one embodiment of this invention. FIG. 13 is a partially enlarged perspective view showing the opening 4a of the floor panel 4 shown in FIG. 12 and the vicinity thereof in an enlarged manner. It is the partial expansion perspective view which expands and shows the opening part 4a of the floor panel 4 to which the conventional cover structure 2 was attached, and its vicinity.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the cover structure concerning this invention and a floor panel using the same is demonstrated concretely based on drawing.
FIGS. 1 to 11 and FIGS. 12 and 13 are views referred to for describing a lid structure and a floor panel using the same according to an embodiment of the present invention.

  The lid structure 20 and the floor panel 4 using the lid structure 20 shown in these drawings are described by attaching the same reference numerals to the same parts as those of the conventional lid structure 2 and the floor panel 4 using the same. The redundant description of the configuration will be omitted except for a part thereof.

  Since the floor panel according to the embodiment of the present invention has the same shape and structure as the conventional floor panel 4, the same reference numeral 4 is used as described above. The floor panel 4 using the lid structure 20 according to the present embodiment is formed with an opening 4a cut out so as to enter a substantially rectangular shape on the side of the floor panel 4 as in the conventional floor panel 4 shown in FIG. Has been.

  The three U-shaped side portions constituting the opening 4a are bent downward from the upper surface 4d of the floor panel 4 and have a tapered section 4b whose section is tapered, and the tapered section 4b. A flange portion 4c is formed that is bent into a flange shape so as to protrude outward in the horizontal direction from the lower end portion.

  On the upper surface of the flange portion 4c, a horizontal step surface 4e is formed at a position where the height is one step lower than the upper surface 4d of the floor panel 4.

  As shown in FIG. 1, the lid structure 20 according to the present embodiment includes a first lid member 22 and a second lid member 28, and a second concave portion 24 c (described later) of the first lid member 22 has a second With the lid member 28 inserted and fitted, these are placed on the stepped surface 4e of the flange portion 4c of the floor panel 4, thereby closing the opening 4a of the floor panel 4. Yes.

  As shown in FIG. 2, the lid structure 20 according to the present embodiment has an opening recess 24 c that is cut out in a substantially rectangular shape inside the center of the lower side of the first lid member 22 in the figure. The second lid member 28 is inserted into and fitted into the opening recess 24c so that the upper surface 28a thereof is flush with the upper surface 22a of the first lid member 22 from the lower side in the figure. ing.

  As described above, when the second lid member 28 is fitted into the opening recess 24c of the first lid member 22, the opening recess 24c is closed as shown in FIG.

  Further, by pulling the second lid member 28 downward in FIG. 3 from the opening recess 24c of the first lid member 22, the second lid member 28 is separated from the first lid member 22 as shown in FIG. The opening recess 24c can be opened.

  As shown in FIG. 5, the first lid member 22 of the lid structure 20 includes a flat plate portion 24 and a standing portion 26 that extends below the flat plate portion 24 and has a smaller horizontal area than the flat plate portion 24. It is comprised by. The first lid member 22 is made of synthetic resin, and the flat plate portion 24 and the standing portion 26 are integrally formed at the time of molding.

  As shown in FIG. 4, the standing portion 26 of the first lid member 22 has a U-shaped groove portion 26b cut out in a substantially U shape from the center of the lower side surface portion 26a in the drawing toward the upper side in the drawing. Is formed in a substantially U-shape.

  Further, on the three side portions of the flat plate portion 24 of the first lid member 22, there are flange portions 24 b that project from the outer peripheral portion of the standing portion 26 in a total of three directions on the lower side in FIG. Is formed. As shown in FIGS. 4 and 5, the flange portion 24 b has a tapered portion 24 f formed on the outer peripheral edge portion on the standing portion 26 side.

  As shown in FIG. 4, the flat plate portion 24 has a substantially U-shape in which a central portion on the lower side in the drawing of the flange portion 24b has an opening recess 24c cut out in a substantially rectangular shape in the upper direction in the drawing. Is formed.

  Of the three side parts 24d, 24e, 24d constituting the opening recess 24c, the side part 24e between the two side parts 24d, 24d facing each other is erected as shown in FIG. The inner surface 26c of the U-shaped groove portion 26b of the portion 26 continues in the same plane.

  And the engaging protrusion 24g which protrudes so that it may mutually approach along the side part 24d in the lower part of the two side parts 24d and 24d which mutually oppose the flat plate part 24 of the 1st cover member 22. Is formed.

  As shown in FIG. 5, the engaging protrusion 24 g is arranged on the lower half side of the thickness of the flat plate portion 24, and the thickness dimension thereof is formed about half the thickness dimension of the flat plate portion 24. Yes. A step surface 24h is formed on the upper surface of the engaging projection 24g so as to be one step lower than the upper surface 22a of the flat plate portion 24.

  Further, the two side portions 24d, 24d facing each other are formed with fitting recesses 24i that are recessed in a substantially rectangular shape as shown in FIG. 5 at the opening end portions (lower end portions in FIG. 4). Yes. The fitting recess 24i is formed such that the lower surface in FIG. 5 is continuous with the step surface 24h of the engaging protrusion 24g in the same plane.

  So far, the first lid member 22 of the lid structure 20 according to the present embodiment has been described. Next, the second lid member 28 of the lid structure 20 will be described.

  As shown in FIG. 6, the second lid member 28 has a plate-like upper plate portion 30 and a plate-like lower plate portion 32 below the plate-like upper plate portion 30 in which the plate thickness is integrally overlapped. It is formed to look like a plate of layers.

  6 is formed in the shape of a square bar having a length in the direction perpendicular to the paper surface in FIG. 6, and its upper surface 34a is integrally formed with the lower surface 32a of the lower plate part 32. A fixed reinforcing portion 34 is formed.

  The second lid member 28 is made of synthetic resin, and the upper plate portion 30, the lower plate portion 32, and the reinforcing portion 34 are integrally formed at the time of molding.

  As shown in FIG. 7, the upper plate portion 30 of the second lid member 28 has a length dimension in the left-right direction (hereinafter referred to as a width direction) in the drawing larger than a length dimension of the lower plate portion 32 in the width direction. A step surface 30 b is formed on the lower surface of both sides of the upper plate portion 30 in the width direction so as to be one step higher than the lower surface 32 a of the lower plate portion 32.

  As shown in FIG. 8, the upper plate portion 30 of the second lid member 28 has a planar shape formed in a substantially rectangular shape, and the lower end portions in the drawing of the side surfaces 30 c on both sides in the width direction are A rectangular parallelepiped fitting projection 30d as shown in FIG. 6 is formed to protrude outward in the width direction.

  As shown in FIG. 7, the fitting convex portion 30d has a height dimension in the vertical direction in the drawing that is smaller than the thickness dimension of the plate thickness of the upper plate portion 30, and is formed in a half thickness. A step surface 30e is formed which is one step lower than the upper surface 28a of the upper plate portion 30.

  As shown in FIG. 8, an arcuate recess 36 is formed on the side of the upper surface 28 a of the second lid member 28 on the reinforcing portion 34 side. The depth of the recess 36 is formed to be close to the thickness of the upper plate 30. The concave portion 36 is for hooking the tip of a finger when the second lid member 28 is pulled out from the opening concave portion 24 c of the first lid member 22.

  As shown in FIG. 9, the lower plate portion 32 of the second lid member 28 has not only the length dimension in the width direction but also the length dimension in the vertical direction in the drawing. It is formed smaller than the size. As shown in FIG. 6, a tapered portion 32 b is formed at the left end portion of the lower plate portion 32 in the drawing so that the thickness dimension gradually decreases from the lower surface 32 a and approaches zero.

  As shown in FIG. 7, the reinforcing portion 34 of the second lid member 28 has a length dimension that is larger than a length dimension in the width direction of the lower plate portion 32, and is close to a length dimension in the width direction of the upper plate portion 30. The length is formed.

  For this reason, the second lid member 28 is constituted by three side portions including a step surface 30b of the upper plate portion 30, both side surfaces 32c in the width direction of the lower plate portion 32, and an upper surface 34a of the reinforcing portion 34. A joint groove 28b is formed.

  As shown in FIG. 2, the second lid member 28 has a lower side (the back side of the drawing) opposite to the side (lower side in the drawing) on which the fitting protrusion 30 d is formed on the side surface 30 c. The end portion (upper end portion in the figure) where the reinforcing portion 34 is formed is inserted into the opening concave portion 24c of the first lid member 22 first.

  FIG. 10 is a view showing a cross section taken along line AA in FIG. 6 of the second lid member 28 in a state of being inserted into the opening recess 24 c of the first lid member 22.

  As shown in FIG. 10, the second lid member 28 has a step surface 30 b of the upper plate portion 30 and a side surface 32 c of the lower plate portion 32 in the cross section of the portion where the reinforcing portion 34 is formed on the lower side in the drawing. The engagement protrusion 24g of the first lid member 22 is fitted into the U-shaped engagement groove 28b formed by the upper surface 34a of the reinforcing portion 34, and the second lid member 28 into the opening recess 24c is fitted. It is designed to guide the insertion.

  At this time, the side portion 24d of the first lid member 22 and the second lid member 28 are disposed between the front end surface of the engaging protrusion 24g of the first lid member 22 and the side surface 32c of the second lid member 28. A gap that is larger than the gap between the side surface 30c is formed. For this reason, the 2nd cover member 28 can be easily inserted in the opening recessed part 24c of the 1st cover member 22, and can slide.

  Further, between the step surface 24 h of the engaging projection 24 g of the first lid member 22 and the step surface 30 b of the upper plate portion 30 of the second lid member 28, and of the engaging projection 24 g of the first lid member 22. Between the lower surface and the upper surface 34a of the reinforcing portion 34 of the second lid member 28, a gap larger than a minimum gap necessary for sliding is not formed.

  For this reason, a gap necessary for sliding is formed between each of the above-described members, so that sliding when the second lid member 28 is inserted into the opening recess 24c is smoothly performed. Be able to be. This is because if this gap is too large, play occurs and sliding is not performed smoothly.

  When the front end surface of the second lid member 28 with the reinforcing portion 34 formed on the lower side thereof is in contact with the innermost abutting surface of the opening recess 24c of the first lid member 22, At the same time, the fitting projection 30d formed on the side surface 30c of the second lid member 28 is fitted into the fitting recess 24i of the first lid member 22 as shown in FIG. The second lid member 28 is inserted and slid.

  As shown in FIG. 11, when the fitting convex part 30d of the upper plate part 30 of the second lid member 28 is fitted into the fitting concave part 24i of the first lid member 22, the second lid member 28 is moved to the first lid. The member 22 is not easily detached from the opening recess 24c, and does not fall off.

  Such a lid structure 20 according to the present embodiment achieves both the ability to easily attach the second lid member 28 to the opening recess 24c of the first lid member 22 and the ability to prevent it from being easily removed. Can be made.

  As described above, the second lid member 28 has a stepped surface 30b of the upper plate portion 30, a side surface 32c of the lower plate portion 32, and a reinforcing portion in the cross section of the portion where the reinforcing portion 34 is formed on the lower side. Since the engagement protrusion 24g of the first lid member 22 is fitted into the U-shaped engagement groove 28b formed by the upper surface 34a of 34, and the insertion thereof is guided. The second lid member 28 can be easily inserted into the opening recess 24 c of the first lid member 22.

  Further, in the lid structure 20 according to the present embodiment, the first lid member 22 is provided with a standing portion 26, and the horizontal sectional area of the standing portion 26 is formed large as shown in FIG. Since the rigidity can be increased, the strength of the first lid member 22 against the load from above can be improved.

  The lid structure 20 according to the present embodiment includes the second lid member 28 with respect to a load from above when the second lid member 28 is provided with the reinforcing portion 34 and is fitted to the first lid member 22. The strength of 28 can be improved.

  Therefore, in the case where the lid structure 20 according to the present embodiment is placed on the flange portion 4c of the floor panel 4 with the second lid member 28 inserted and fitted into the first lid member 22, The strength of the lid members 22 and 28 against the load on the floor panel 4 can be improved.

  By using such a lid structure 20 for the opening 4a of the floor panel 4, the load bearing strength of the free access floor structure constituted by the floor panel 4 can be improved.

  As described above, according to the lid structure 20 and the floor panel 4 using the lid structure 20 according to the present embodiment, the strength of the lid members 22 and 28 is improved and a large load is applied from above the floor panel 4. It is possible to prevent the lid members 22 and 28 from being deformed when the is applied. For this reason, the load bearing strength of the free access floor structure comprised by the floor panel 4 can be improved.

  In the lid structure 20 according to the above-described embodiment and the floor panel 4 using the same, the reinforcing portion 34 is formed in a square bar shape, but is not limited thereto. Any shape may be used.

2 Lid structure 4 Floor panel 4a Opening 4b Taper 4c Flange 4d Upper surface 4e Step surface 6 Lid member 6a Long side plate 6b Short side plate 20 Lid structure 22 First lid member 22a Upper surface 24 Flat plate 24b Flange 24c Opening recess 24d, 24e Side edge 24f Taper 24g Engaging protrusion 24h Stepped surface 24i Fitting recess 26 Standing portion 26a Side view 26b U-shaped groove 26c Inner bottom 28 Second lid member 28a Upper surface 28b Engaging groove 30 Upper Plate portion 30b Stepped surface 30c Side surface 30d Fitting convex portion 30e Stepped surface 32 Lower plate portion 32a Lower surface 32b Tapered portion 32c Side surface 34 Reinforcing portion 34a Upper surface 36 Recessed portion

Claims (5)

A lid structure attached to the opening of the floor panel,
A flat plate portion in which a U-shaped opening concave portion is formed on the side portion;
An engagement protrusion formed so as to protrude from the opposite side portions of the opening recess and to be parallel to the side portion;
A fitting recess formed at the opening end of the side portions of the opening recess facing each other;
A first lid member having a standing portion provided on the lower surface of the flat plate portion;
A plate part in which the upper half part is formed wider than the lower half part; and
A reinforcing portion that is provided on a side portion of the lower surface of the plate portion and fits with the upper half portion of the plate portion so as to sandwich the engaging protrusion of the first lid member;
A second lid member having: a fitting convex part which is provided on a side part opposite to the side part provided with the reinforcing part of the plate part and which fits with the fitting concave part of the first lid member; A lid structure characterized by comprising:   The lid structure according to claim 1, wherein a flange portion projecting outward from an upper end surface of the standing portion is formed on a peripheral edge portion of the flat plate portion.   3. The lid structure according to claim 1, wherein an arcuate recess is formed on a leading end side of the plate portion into the opening recess on the upper surface. A floor panel having an opening,
A flat plate portion in which a U-shaped opening concave portion is formed on the side portion;
An engagement protrusion formed so as to protrude from the opposite side portions of the opening recess and to be parallel to the side portion;
A fitting recess formed at the opening end of the side portions of the opening recess facing each other;
A first lid member having a standing portion provided on the lower surface of the flat plate portion;
A plate part in which the upper half part is formed wider than the lower half part; and
A reinforcing portion that is provided on a side portion of the lower surface of the plate portion and fits with the upper half portion of the plate portion so as to sandwich the engaging protrusion of the first lid member;
A second lid member having: a fitting convex part which is provided on a side part opposite to the side part provided with the reinforcing part of the plate part and which fits with the fitting concave part of the first lid member; A floor panel comprising: a lid structure including: a lid structure attached to the opening.   The floor panel according to claim 4, wherein the opening recess is formed in a side portion of the flat plate portion closer to a center portion of the floor panel.

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