JP5520458B2 - Double floor lid and double floor structure - Google Patents

Description

  The present invention relates to a double-floor lid and a double-floor structure, and more particularly to a lid that is detachably attached to an opening of a flat floor panel having two parallel principal surfaces. In particular, a double floor structure provided with wiring space for laying wiring and cables, such as electric cables and communication cables, and wiring devices, and an opening in the floor panel from which wiring and wiring devices are drawn The present invention relates to a lid structure that closes a part.

  In recent years, a double floor in which a wiring space for wiring an electric cable, a communication cable and the like is formed on a basic floor surface of a building is widely used as a floor for a so-called office automation (OA) floor. Such a double floor, for example, arranges a plurality of plates or floor panels on a plurality of support legs arranged vertically and horizontally on the foundation floor surface of the building, and adhesively fixes the carpet on the floor panels. It is formed by doing.

  In addition, some floor panels of a double floor are provided with an opening at an end portion for drawing out an electric cable or a communication cable from a wiring space, for example. A lid is detachably attached to the opening for the purpose of closing it at any time.

  Conventionally, such a double-floor lid is likely to rattle due to walking vibration, lateral displacement due to treading pressure, adhesion and detachment due to carpet peeling, and the like. In order to prevent this, mounting stability is required to maintain a stable mounting state on the floor panel.

In order to ensure this mounting stability, Patent Document 1 discloses a lid body that is mounted by sandwiching the periphery of the opening from above and below from the side surface of the floor panel. Patent Document 2 discloses a lid that is fixed to the edge of the opening with a screw or the like, and Patent Document 3 discloses a lid that is locked to the edge of the opening with a locking claw.
Japanese Utility Model Publication No. 3-73313 Japanese Patent Laid-Open No. 5-171783 Japanese Patent No. 2549728

  With conventional lids, when you need to attach or detach wiring or wiring devices from the floor panel, remove the floor panel and remove it from the side, or remove the fixing screws. It was necessary to carry out complicated work on site, such as attaching and detaching, and attaching and detaching using a locking claw release tool. For this reason, particularly for a double-floor contractor who has to perform treatment at an unspecified number of places, the work efficiency has been reduced. In addition, it was very inconvenient for many non-professionals who took these measures along with layout changes after laying. Thus, the conventional double floor structure has a problem that it cannot be used well.

  The present invention eliminates the disadvantages of the prior art, and is an easy-to-use double-floor lid that can be easily attached to and detached from the opening of the floor panel while ensuring the stability of the lid when being mounted. The object is to provide a heavy floor structure.

  According to the present invention, the lid that is detachably attached to the opening of the flat floor panel having two substantially parallel main surfaces has a planar shape corresponding to the shape of the opening as a whole. One of the main surfaces when the lid is attached to the opening, and a closed portion that closes the opening when the lid is attached to the opening with one edge of the planar shape facing the depth direction of the opening A floor panel abutting portion having one end abutting on the floor, and a peripheral edge forming portion that is connected to the closing portion and forms a part of the peripheral contour of the main surface when the lid is attached to the opening. All locations of the contact portion and the peripheral edge forming portion are in positions where they are not locked to the peripheral edge of the opening in the process of rotating the lid with respect to the floor panel about the one edge portion.

  According to the present invention, preferably, the peripheral edge forming part connects the closed part and the floor panel abutting part to each other, and all portions of the floor panel abutting part and the peripheral edge forming part are connected to the one edge. In the process of rotating with respect to the floor panel as an axis, it is in a position where it is not locked to the periphery of the opening, and the closing part and the floor panel abutting part are generally at intervals substantially equal to the thickness of the floor panel with respect to each other. The floor panel abutting part is spaced substantially parallel to the closing part, and is separated so that the interval is pushed and widened by one main surface in the process in which the lid rotates around the axis. The floor panel contact portion and the peripheral edge forming portion are formed of a single plate material whose side surface shape is bent into a substantially U shape as a whole.

  According to the present invention, preferably, the closing portion, the floor panel abutting portion, and the peripheral edge forming portion or the peripheral edge forming portion are all of the closing portion, the floor panel abutting portion and the peripheral edge forming portion or the peripheral edge forming portion in the side surface shape. The position of one end of the floor panel contact portion is a position where the linear distance from the one edge portion is shorter than the length to the other edge portion of the closing portion in the direction opposite to the one edge portion. Is in the depth direction with respect to a normal line extending vertically from the one edge portion to the floor panel contact portion.

  In the double floor structure in which the lid according to the present invention is attached to the opening of the floor panel, when the lid is attached to the floor panel, the opening is closed by the closing portion and one main surface of the floor panel ( One end side of the floor panel contact portion is in contact with the lower surface. Therefore, a stable wearing state can be ensured. On the other hand, it is possible to remove the lid without removing the floor panel by a simple operation of pulling up while rotating upward from the mounted state. Thus, usability can be improved.

  Next, an embodiment of a double floor structure having a lid at the opening of a floor panel according to the present invention will be described in detail with reference to the accompanying drawings.

  First, a double floor structure will be described with reference to FIG. The double-floor structure is basically composed of a plurality of floor panels 2 formed in a flat plate shape having two main surfaces back to back in a substantially square plane shape, and a horizontal plane (not shown) such as a foundation floor surface of a building. ) And a support member that supports one main surface of each floor panel 2, in this example, the lower main surface at its four corners, for example, a plurality of support legs 4. In this example, the floor panel 2 is placed on the support leg 4 so that the four corners of each floor panel 2 abut each other on the basic floor surface of the building room or the like, and between the floor panel 2 and the floor surface of the building. A double floor structure is formed by laying the floor panel 2 while forming a wiring space for installing wiring facilities such as electric cable wiring and communication cable wiring.

  In practical use, a floor material (not shown) such as a carpet is laid on the floor panel 2 having a double floor structure and fixed with an adhesive such as an adhesive resin.

  In this embodiment, the floor panel 2 has a substantially square planar shape as a whole, and an opening 30 for managing wiring equipment installed in the wiring space is formed on one side of the equipment management floor panel, for example. There are two types of floor panels, 20 and a so-called standard floor panel 10 which is a standard floor panel without an opening 30.

  The standard floor panel 10 and the facility management floor panel 20 have basically the same structure. The facility management floor panel 20 shown in FIG. 3 includes, for example, a bonding plate material (MDF: Medium Density Fiberboard) 22 and an upper plate 24 and a lower plate 26 bonded to each other so as to be sandwiched from both main surfaces. In the present embodiment, the bonding plate material 22 is a plate-like material obtained by reconfiguring a piece of wood with a bonding agent such as an adhesive, and the upper plate 24 and the lower plate 26 are thin metal plates such as galvalume steel plates. With such a structure, the floor panel 2 is protected by the upper plate 24 and the lower plate 26 so that the supporting strength of the coupling plate member 22 is increased and the upper and lower surfaces of the coupling plate member 22 are not damaged. The floor panel 2 may be a single body such as a wooden board, a metal board, a resin board, a particle board, a board made of ceramic materials, or any combination thereof.

  In the present embodiment, the standard floor panel 10 and the facility management floor panel 20 have almost the same structure, but may of course have different structures.

  In the actual facility management floor panel 20 and the standard floor panel 10, the upper surface and the lower surface as the main surface may have a lattice shape or an uneven shape, but even in such a case, as a whole If a planar shape is formed, they are collectively referred to as a main surface (upper surface, lower surface).

  The four edges on the lower surface side of the coupling plate material 22 are cut out at approximately 45 degrees from the side surface side to the lower surface side of the coupling plate material 22, which serves as a support leg guide when the equipment management panel 20 is placed on the support leg 4. Function. The support leg guide may have another angle, and the cross section may be cut out into a convex arc shape, a concave arc shape, a polygonal shape, or the like. That is, any shape suitable for a guide that easily guides the support leg 4 when it is placed on the support leg 4 may be used.

  The upper plate 24 is provided with upper plate claw portions that fit into the four sides of the coupling plate material 22. As a result, the upper plate 24 is not easily peeled off from the coupling plate material 22, but further increases the strength of the coupling plate material 22.

  Similarly, the lower plate 26 is provided with lower plate claw portions that are fitted to the support leg guides at the four sides of the coupling plate material 22. As a result, the lower plate 26 is not easily peeled off from the coupling plate material 22, but further increases the strength of the coupling plate material 22.

  Next, a characteristic basic structure of the present embodiment will be described. First, the opening 30 is appropriately sized to manage the wirings and wiring devices in the wiring space, for example, at a substantially central position on one edge of the floor panel 20, and has a rectangular planar shape as a whole. Are formed so as to be cut toward the center of the floor panel 20. Here, in the plane including the floor panel 2, the direction from the opening of the opening 30 toward the depth thereof, that is, the direction in which the lid 40 is mounted on the opening 30 is also referred to as “mounting direction”. The direction perpendicular to the mounting direction is also referred to as “width direction”.

  The cut shape of the upper plate 24 is cut into a quadrangle that is larger than the cut shape of the coupling plate material 22 by a predetermined width. As a result, a step surface portion 32 corresponding to the thickness of the upper plate 24 is formed along the opening 30. When the lid 40 is attached to the opening 30 of the facility management floor panel 20, the upper surface of the facility management floor panel 20 and the upper surface of the blocking portion 42 are located at substantially the same height by the step surface portion 32, and the upper plate 24 and the step surface portion. The periphery of the blocking portion 42 comes into contact with the step portion 34 (that is, the opening edge) formed by 32. That is, the periphery of the closing portion 42 of the lid body 40 functions as an opening edge contact portion with respect to the step portion 34, and the lateral displacement of the lid body 40 due to walking vibration or the like is also prevented.

  In the present embodiment, the planar shape of the opening 30 is a quadrangle as a whole, but other planar shapes such as a trapezoid, a triangle, and a semicircle may be used according to the situation at the construction site.

  In this embodiment, the lid 40 is formed by molding a single metal plate having a thickness substantially the same as the thickness of the upper plate 24 of the facility management floor panel 20. More specifically, referring to FIG. 1, the lid 40 includes a closing portion 42 for closing the opening 30 in a state where the lid 40 is mounted on the facility management floor panel 20, and the gravity direction of the facility management floor panel 20. The floor panel abutting portion 46 that abuts the lower surface as viewed from above, and the connecting portion 44 that connects the closing portion 42 and the floor panel abutting portion 46 are configured. As can be seen from the cross-sectional view in the figure, the closing portion 42, the floor panel abutting portion 46, and the connecting portion 44 are formed so that the overall shape when viewed from the side is a U-shape.

  Of course, the lid 40 may be formed by molding a single metal plate that is thicker or thinner than the thickness of the upper plate 24 of the facility management floor panel 20. As a result, when the lid 40 is attached to the opening 30, a difference in level is generated due to the difference in thickness, and the position of the lid 40 can be specified even after the carpet is laid.

  The lid body 40 is mounted so that the floor panel contact portion 46 is inserted from the open end side, that is, one end side in the U-shape with respect to the mounting direction of the opening 30. Further, the closing portion 42 and the floor panel abutting portion 46 have a mutual interval substantially equal to the thickness of the facility management floor panel 20, and both extend to one end side substantially parallel to each other. In order to make it easy to attach the lid 40 to the opening 30, this interval may be slightly widened from the connecting portion 44 to one end side, and conversely, in order to increase the attachment strength, the connecting portion 44 It may be slightly narrower from one end to the other.

  In the present embodiment, the connecting portion 44 connects the closing portion 42 and the floor panel contact portion 46 to each other. The connecting portion 44 also functions as an opening edge contact portion that contacts the opening edge of the opening portion 30 when the lid body 40 is attached to the opening portion 30, and the lid is caused by walking vibration or the like. The lateral displacement of the body 40 itself is also prevented. Further, the opening edge in this case corresponds to the opening edge 36 that is a cross-sectional portion of the facility management floor panel 20 cut out by the opening 30. Incidentally, from another point of view, this opening edge contact portion is a part of the peripheral outline of the main surface (in this case, the upper surface) of the facility management floor panel 20 when the lid 40 is mounted on the opening 30. It also functions as a peripheral edge forming part for forming the.

  In addition, although it has been described that “the opening edge contact portion comes into contact with the opening edge”, “contact” in this case is a case where the opening edge and the opening edge contact portion are arranged to be separated to some extent. Also included. In other words, “abutment” is a position where the opening edge and the opening edge abutment part abut against each other due to walking vibrations when using a double floor, so that lateral displacement can be prevented. It means that

  In the lid 40, the interval between the closing part 42 and the floor panel contact part 46 is such that the opening edge 36 of the facility management floor panel 20 is closed when the opening 30 is closed or opened, as shown in FIG. Of these, the floor panel abutting portion 46 is pushed and spread over the closing portion 42 by the lower end of the inward surface (hereinafter also referred to as the opening lower end 36a), so that the normal position of the floor panel abutting portion 46 is achieved. Selected to move from X1 to the unfolding position X2.

  As a result, once the lid 40 is attached to the facility management floor panel 20, the opening on the one end side of the closed portion 42, that is, the closed portion one end 48 as an axis, with a force that pushes the floor panel contact portion 46 open. Until the floor panel 20 is rotated with respect to the floor panel 20, the force that the floor panel contact portion 46 tries to return from the expanded position X2 to the normal position X1, for example, the spring based on the elastic force of the material forming the lid 40 It is urged in the closing direction by force or the like. Therefore, the lid 40 is not easily detached from the facility management floor panel 20. As a result, in the double floor, the lid body 40 can reliably prevent inadvertent detachment from the facility management floor panel 20 due to external force, and at the time of construction work, by rotating it in the opening direction with a certain force, It can be easily removed.

  For the lid 40, the distance between the closing portion 42 and the floor panel abutting portion 46, the material and material thickness of the lid 40 itself, and the size and position of the rectangular hole 56 of the floor panel abutting portion 46 are appropriate. The spring force that the floor panel abutting portion 46 tries to return from the expanded position X2 to the normal position X1 can be set to a desired value. By doing so, it is possible to design and provide the lid 40 having an urging force in accordance with the mounting state on the facility management floor panel 20 and the usage state of the user.

  In the present embodiment, the planar dimension of the blocking portion 42 is slightly smaller than the region cut into the upper plate 24 of the equipment management floor panel 20, that is, the region obtained by adding the stepped surface portion 32 and the opening 30. Greater than 30. The thickness of the blocking portion 42 is formed to be substantially the same as that of the upper plate 24 of the facility management floor panel 20. Therefore, the closing portion 42 can close the opening portion 30 without causing a vertical step between the facility management panel 20 and the closing portion 42.

  In the present embodiment, the blocking portion 42 is provided with ribs 54 so that the required strength can be obtained with a small amount of metal used. Further, as a hole through which a tool such as a screwdriver or a finger can be inserted and hooked, the closing portion 42 is provided with a hooking hole 52 penetrating the front and back surfaces substantially vertically, for example. This hooking hole may not be a through hole. Further, a cushioning sheet is advantageously provided on the back surface of the closing portion 42 that comes into contact with the stepped surface portion 32 when the lid 40 is attached to the opening 30. The ribs 54, the hooking holes 52, and the cushioning sheet are not essential.

  For example, a small-diameter opening may be formed in the closing portion 42 in order to draw out a thin wiring cable. By doing so, it is necessary to selectively pull out the required number of wiring cables from the wiring space at the bottom of the floor panel 2 of the double floor or to pull out a large number of wiring cables. A small-diameter opening may be used or the lid 40 may be removed. That is, when only a small amount of wiring cable that does not require a wide opening as large as the opening 30 is drawn out from the wiring space, the small-diameter opening may be used while the lid 40 is attached. As a result, with the lid 40 having a small-diameter opening, the opening area on the facility management panel 20 through which the wiring cable is drawn out can be minimized, and therefore the risk of a pedestrian or the like tripping over the opening is reduced as much as possible. be able to. As the small-diameter opening in the lid 40, a new cut 28 may be provided as illustrated in FIG. Further, the hooking hole 52 (FIG. 1) and the hooking recess 72 (FIG. 9) also function as such.

  As shown in FIG. 6, the connecting portion 44 includes a position c on the opposite side of the end d on the one end side of the floor panel contact portion 46 (hereinafter also referred to as the contact end 50) and the closing portion 42. The shortest distance ac between the one end position a (that is, the closed portion one end 48) is the position b of the end on the other end side from the one end position a of the closed portion 42 (hereinafter also referred to as the closed portion other end 49). The closed portion 42 and the floor panel abutting portion 46 are substantially parallel to each other at a position shorter than the closed portion length ab until the thickness of the facility management floor panel 20 (more specifically, the connecting plate 22 And the lower plate 26 are formed to be bent with a structure set to be substantially the same. That is, the connecting portion 44 is connected to the closing portion 42 at an acute angle. For this reason, the lid 40 defines an opening 30 when the lid 40 is mounted while being rotated with respect to the floor panel 20 around one edge of the floor panel contact portion 46, in this example, one end position a. It is not locked to the vertical wall or opening edge of the floor panel 20.

  The connecting portion 44 has a length in a direction (hereinafter referred to as a lid width direction) perpendicular to the direction of the closing portion length ab described above in the lid body 40 (hereinafter referred to as a lid length direction). The opening 30 is set slightly shorter than the length in the width direction. As a result, when the lid 40 is attached to the opening 30 of the facility management floor panel 20, the lid width direction of the connecting portion 44 comes into contact with the opening edge 36 of the opening 30 in the width direction. . That is, the connecting portion 44 of the lid body 40 functions as an opening edge contact portion with respect to the opening edge 36. In practice, next to the facility management floor panel 20, another standard floor panel 10, the facility management floor panel 20, walls, and the like exist as opening edges. In such a case, when the lid 40 is attached to the opening 30 of the facility management floor panel 20, the connecting portion 44 is connected to the other standard floor panel 10, the facility management floor panel 20, and the wall. It will contact in the vertical direction. That is, also from this viewpoint, the connecting portion 44 of the lid body 40 functions as an opening edge contact portion with respect to the opening edge, and as a result, the lateral displacement of the lid body 40 due to walking vibration or the like is prevented. The

  The floor panel abutting portion 46 has a length in the lid width direction cut into the coupling plate material 22 so that the floor panel abutting portion 46 can be inserted into the wiring space when the lid body 40 is mounted from above the floor panel 20. As a whole, it is formed shorter than the length of the rectangular opening 30 in the width direction. Therefore, when the lid 40 is attached to the opening 30, one end side, that is, the contact end 50 side comes into contact with the lower surface of the floor panel.

  In addition, although it has been described that “the floor panel abutting portion abuts on the lower surface of the floor panel”, in this case, “the abutting” means that the floor panel abutting portion and the lower surface of the floor panel are arranged with a certain distance therebetween. Such cases are also included. In other words, “abutment” means that, when using a double floor, when the carpet is peeled off, the floor panel abutting portion and the lower surface of the floor panel abut against each other so that the lid 40 can be prevented from being detached. It means that it is arranged at a proper position.

  In the present embodiment, in the lid body 40, when the normal line is drawn with respect to the surface formed by the floor panel contact portion 46 from the one end position a (the closed portion one end 48) of the closed portion 42, e is the intersection position. The length cd in the lid length direction of the floor panel contact portion 46 is set to be at least longer than the length ce from the other end position c to the intersection position e. Further, the length cd in the lid length direction of the floor panel abutting portion 46 is a length that does not interfere with the wiring equipment in the wiring space or the foundation floor when the lid 40 is attached to or detached from the equipment management floor panel 20. Is also set. The floor panel abutting portion 46 is also provided with a rectangular hole portion 56 so that the amount of metal used can be reduced and the overall cost can be reduced. Of course, this rectangular hole 56 is not essential.

  The embodiment of the lid 40 formed from a single metal plate has been described above, but the lid 40 may of course have an assembly structure or a molded body structure of a plurality of parts. The material may be wood, resin, glass fiber, carbon fiber or the like. At this time, it is advantageous that the lid body 40 is provided with a spring property or the shape thereof is designed so as to continue to hold the equipment management floor panel 20 even after being attached to the equipment management floor panel 20. Thereby, for example, even when the floor panel is removed during construction, the floor panel 2 can be handled with the lid 40 attached.

  Further, as shown by a lid 140 in FIG. 7, the connecting portion 44 may be erected from the middle of the closing portion 42. In this case, the lid 140 is advantageously provided with a slip prevention plate 62. The slip prevention plate 62 is disposed at a position where it comes into contact with another standard floor panel 10, the equipment management floor panel 20, a wall, or the like as the opening edge of the opening 30 when the lid 140 is mounted. As a result, it functions as an opening edge contact portion. As a result, once the lid 140 is attached to the facility management floor panel 20, the connecting portion 44 comes into contact with the opening edge 36 of the opening 30 in the width direction, and the misalignment prevention plate 62 is replaced with another standard floor panel 10 or It comes in contact with the facility management floor panel 20, the wall and the like in the lid length direction. Thereby, in the lid 140, it is possible to prevent horizontal displacement caused by walking vibration and the like, and effects similar to the effects derived from the configuration of the lid 40 of the above-described embodiment (including those described later). Will be obtained. As described above, in the lid 140, the closing portion 42 is formed as a plate-like member, and the floor panel contact portion 46 is formed as a plate-like contact member as described above. Further, for example, the connecting portion 44 functions as an opening edge contact portion facing the opening portion 36, and the misalignment prevention plate 62 functions as an opening edge contact portion with respect to the standard floor panel 10, for example. Thereby, similarly to the lid body 40 of the above-described embodiment, it is possible to ensure a stable state when the lid body 40 is mounted.

  As shown in FIG. 8, on one end side of the floor panel contact portion 46, a convex portion 64 that protrudes toward the lower surface of the facility management floor panel 20 may be provided on the upper surface side. By doing so, in the mounted state, in the mounted state, the spring force increases corresponding to the height of the convex portion 64, and the possibility of inadvertent removal from the facility management floor panel 20 can be further reduced.

  In this case, a recess corresponding to the protrusion 64 of the lid 240 may be further formed on the floor lower surface of the facility management floor panel 20. By doing so, in the mounted state, the projection 64 of the lid 240 fits into the recess, so that the risk of detachment of the lid 240 from the facility management floor panel 20 can be further reduced.

  The convex portion 64 of the lid 240 may be formed integrally with the lid 240 as a rib, or may be formed as a separate member, for example. The convex portion 64 is preferably formed in a smooth mountain shape. Further, if the concave portion of the floor lower surface corresponding to the convex portion 64 is formed in a correspondingly smooth shape, the convex portion 64 of the lid 240 fits into the concave portion of the floor lower surface, but the convex portion 64 is completely formed by this concave portion. Can be prevented from being locked. As a result, even if the lid 240 is in a state where the convex portion 64 is fitted in the concave portion, if the lid 240 is rotated in the opening direction with a force such that the convex portion 64 can be detached from the concave portion, It can be removed from the facility management floor panel 20.

  The floor panel abutting portion 46 is in the form of a rod-like connecting portion 66 erected from the middle of the closing portion 42 in the lid 340 shown in FIG. The rod-like connecting portion 66 is bent toward one end side, and a contact piece 68 is provided at the tip portion. In this case, when attached to the facility management floor panel 20, the contact piece 68 contacts the floor panel lower surface of the facility management floor panel 20 instead of the floor panel contact portion 46. The lid 340 is also provided with a slip prevention wall 70 at a portion other than one end side thereof. The slip prevention wall 70 functions as an opening edge abutting portion, and once the lid 340 is attached to the facility management floor panel 20, the lid width direction of the slip prevention wall 70 is aligned with the opening edge 36 of the opening 30. In addition to abutting in the width direction, the lid length direction of the misalignment prevention wall 70 abuts against the other standard floor panel 10, the facility management floor panel 20, the wall, and the like. As a result, the lid 340 can prevent horizontal displacement caused by walking vibration and the like, and effects similar to the effects derived from the configuration of the lid 40 of the above-described embodiment (including those described later). Will be obtained. In this embodiment, there is one rod-like connecting portion 66, but a plurality of rod-like connecting portions 66 may be provided.

  Subsequently, the characteristic function of the present embodiment will be specifically described with reference to the cross-sectional views of FIGS. FIG. 10 shows that the lid 40 is attached in a state where the facility management floor panel 20 is laid on the support portion 4 (FIG. 2) with the opening 30 opened. The lid 40 opens the facility management floor panel 20 obliquely from above with the closing part 42 tilted upward in the direction of gravity, the floor panel contact part 46 downward, and the connecting part 44 facing upward. Insert into part 30.

  At this time, first, the closed portion end 48 of the side located at the lowermost side of the closed portion 42 hits the step 34 of the stepped surface portion 32 of the opening 30, and as a result, as shown in FIG. The step portion 34, that is, the closing portion one end 48 is inserted while being rotated about the central axis. More specifically, the floor panel abutting portion 46 and the connecting portion 44 of the lid 40 are sequentially inserted into the opening 30.

  The lid 40 is set so that the length cd in the lid length direction of the floor panel contact portion 46 is longer than the length ce from the other end position c to the intersection position e. When it is rotated to the horizontal state, the upper surface of the floor panel contact portion 46 comes into contact with the lower end 36a of the opening.

    Further, as shown in FIG. 12, the lid body 40 rotates while the interval between the closing portion 42 and the floor panel contact portion 46 is pushed and widened by the opening edge 36, thereby closing the opening 30.

  As described above, the lid 40 has the shortest distance a-c between the other end position c of the floor panel contact portion 46 and the one end position a (the closed portion one end 48) of the closed portion 42. It is designed to be smaller than the part length ab. In other words, the lid 40 is designed such that the linear distance from the one end position a to all the locations on the lid 40 is shorter than the closing part length ab of the closing part 42 when viewed in a side view. Yes. Therefore, when rotating downward, as shown in FIG. 11, the lid body 40 does not protrude beyond the external dimensions of the facility management floor panel 20 even while being inserted while rotating.

  For example, in a situation where the opening 30 of the facility management floor panel 20 is placed in contact with the wall surface of the room, users such as double-floor construction contractors and office dwellers are forced to perform troublesome work hindered by this wall. Without a simple work that causes the lid 40 to move forward or to the left or right by hooking a finger or screwdriver on the hooking hole 52 with the wall facing toward the wall or with the right or left side of the body facing the wall, The lid 40 can be easily attached and detached from the facility management floor panel 20.

  As described above, the distance between the blocking portion 42 and the floor panel contact portion 46 is designed in consideration of the floor panel thickness of the opening 30. As shown in FIG. 13, once the lid 40 is in a horizontal state, the closing portion 42 contacts the stepped surface portion 32 in the vertical direction, and the floor panel contact portion 46 extends in the vertical direction to the lower surface of the equipment management floor panel 20. Abut. Thus, the lid 40 is stably held at a horizontal position with respect to the facility management floor panel 20. Thereby, for example, when the carpet laid on the floor panel 2 is peeled off by an adhesive such as an adhesive resin, the lid 40 can be prevented from being lifted together.

  Further, since the closing portion 42 is designed to have substantially the same dimensions as the opening portion 30, the connecting portion 44 functions as an opening edge contact portion and is adjacent to the opening portion 30 in the installed state (state of FIG. 13). It abuts against other standard floor panels 10 and the like and the opening edge 36 of the opening 30 in the horizontal direction. Therefore, the lid 40 is not displaced in the horizontal direction by an external force such as a pedestrian's stepping pressure. In order to further improve the stability, an elastic sheet such as rubber or an anti-slip sheet having a large number of minute protrusions may be installed on the upper surface of the floor panel abutting portion 46 that contacts the facility management floor panel 20. Good.

  Previously, it has been described that the closing portion one end 48 is inserted while rotating around the stepped portion 34 of the stepped portion 32 of the opening 30 and rotating around the closing portion one end 48. It may not be. That is, even when the closing part one end 48 rotates while sliding on the stepped surface part 32, the connecting part 44 is designed to have an acute angle with respect to the closing part 42. The connecting portion 44 hits 10 obliquely, and the position of the lid 40 is naturally corrected using the connecting portion 44 as a guide.

  As described above, the embodiment in which one opening 30 is provided on one side of the facility management floor panel 20 has been described, but the opening 30 may be provided on any one side of the single facility management floor panel 20, respectively. In addition, a plurality of locations may be provided per side.

  Further, even if the opening 30 of the facility management floor panel 20 is provided at a location other than the side portion of the floor panel 2, that is, as shown in FIG. 14, the lid 40 can obtain the same effect. .

  Further, as shown in FIG. 15, two facility management floor panels 20 may be arranged so that their openings 30 face each other. Further, as shown in FIG. 16, an enlarged opening 60 having a single size corresponding to, for example, about two of the lids 40 may be provided at any location inside the facility management floor panel 20. . By doing so, even when a large enlarged opening 60 is required according to the conditions of the wiring equipment, it is possible to cope with this while maintaining the same effect. Further, the lid body 40 can be rotated 90 degrees by setting the dimensional ratio of the depth direction and the width direction of the lid body 40 to about 1: 2 and making the enlarged opening 60 substantially square. It is. Incidentally, in the case of the opening 30 in FIG. 15 and the enlarged opening 60 in FIG. 16, the front side of the adjacent lid 40 (that is, the connecting portion 44) also functions as an opening edge.

  So far, the advantages of attaching the lid 40 in a state where the floor panel 2 including the equipment management floor panel 20 has already been laid are described. However, the equipment management floor panel 20 can be easily obtained by sliding the lid 40 parallel to the main surface of the floor panel 20 from the side direction of the equipment management floor panel 20 as shown in FIG. It can also be removed. As described above, the attachment and detachment of the lid 40 with respect to the opening 30 can be selectively performed according to the situation.

  Moreover, in the above-described embodiment, the case where the equipment management floor panel 20 is provided with the step 34 has been described, but the present invention is not limited to this, and the equipment management floor panel 20 does not have the step 34. Also good. Even in such a case, since the connecting portion 44 and the floor panel contact portion 46 function as an opening edge contact portion (periphery forming portion), the same effects as those of the above-described embodiment can be obtained. .

  The specific embodiments of the present invention have been described in detail above. However, the present invention is not limited to this, and for example, a form in which the configurations of these embodiments are partially extracted and applied, or some or all of them are arbitrarily selected. The form extracted and combined in the above can be widely applied.

  As described above, the lid of the present embodiment is formed with a simple configuration such as bending a single metal plate, for example, so that the number of parts and manufacturing can be maintained while maintaining the strength necessary for a double floor component. The number of processes can be reduced. As a result, the manufacturing cost can be reduced, and the easy-to-use and simple lid 40 can be provided.

  In addition, when it is necessary to remove the lid 40, such as pulling out new wiring and wiring devices from the floor panel 2 after construction, it is necessary to remove the fixing screws without removing the floor panel. Without using the above tool, it can be easily attached to and detached from the floor panel by a simple operation of rotating the lid 40. Further, the facility management floor panel 20 can be installed without being restricted by the position on the floor. Therefore, the wiring design can be appropriately selected according to the situation of the laying work without restricting the wiring design, and it is easy to use and can contribute to a significant improvement in work efficiency. In addition, once laid, there is an effect of avoiding the situation of separation when the carpet is peeled off, and an effect of preventing lateral displacement due to walking vibration, etc., and stability is ensured.

It is the top view which shows the cover body by the Example of this invention, a bottom view, a front view, a rear view, a side view, and sectional drawing. It is a top view which shows the whole structure of the Example of the double floor structure which provided the cover body by the Example in the laying state. It is the top view which shows the equipment management floor panel corresponding to the cover body by the same Example, a bottom view, a side view, and sectional drawing. It is a partial expanded sectional view for demonstrating the attachment or detachment state of the cover body by the Example. It is the top view, bottom view, front view, back view, side view, and sectional view which show the cover body by other Examples of this invention. It is explanatory drawing explaining the dimensional condition of the structure of the cover body by the Example of this invention. It is a top view, a bottom view, a front view, a rear view, a side view, and a sectional view showing a lid according to still another embodiment of the present invention. It is a top view, a bottom view, a front view, a rear view, a side view, and a sectional view showing a lid according to still another embodiment of the present invention. It is a top view, a bottom view, a front view, a rear view, a side view, and a sectional view showing a lid according to still another embodiment of the present invention. It is a partial expanded sectional view for demonstrating later the attachment or detachment state of the cover body by the Example of this invention. It is a partial expanded sectional view for demonstrating the attachment or detachment state of the cover body by the Example following FIG. FIG. 12 is a partially enlarged cross-sectional view for explaining a state of attaching and detaching the lid according to the same embodiment, following FIG. 11. It is a partial expanded sectional view for demonstrating the attachment or detachment state of the cover body by the Example following FIG. It is the top view which shows the application example of the cover body by the same Example, and the expanded sectional view which shows the attachment or detachment state. It is the top view which shows the other application example of the cover body by the same Example, and the expanded sectional view which shows the attachment or detachment state. It is the top view which shows the further another application example of the cover body by the Example, and an expanded sectional view which shows the attachment or detachment state. It is the top view and expanded sectional view which show the attachment or detachment state from the horizontal direction of the cover body by the Example.

Explanation of symbols

2 Floor panel
4 Support legs
10 standard floor panels
20 Facility management floor panel
22 Bonding plate
24 Upper plate
26 Lower plate
28 depth of cut
30 opening
32 Stepped surface
34 steps
36 Opening edge
40, 140, 240, 340 lid
42 Blocking part
44 Connection
46 Floor panel contact part
48 One end of occlusion
49 Other end of blockage
50 Contact end
52 Catch hole
54 Ribs
56 Rectangular hole
60 Enlarged opening
64 Convex
66 Rod connection
68 Contact piece
70 Anti-slip wall

Claims (10)

In a lid that is detachably attached to an opening of a flat floor panel having two substantially parallel principal surfaces, the lid is
When the lid is attached to the opening, the closure is configured to close the opening from the upper surface side of the main surface;
When the length in the width direction orthogonal to the mounting direction in which the lid is mounted on the opening is formed shorter than the length in the width direction of the opening, and the lid is mounted on the opening , A floor panel abutting portion in which an end portion on one end side abuts on the lower surface of the surface and an end portion on the other end side extends toward the opening side ; and
A connecting portion for connecting the blocking portion and the floor panel contact portion;
When the lid is attached to the opening, an opening edge contact portion that contacts at least the opening edges on both sides in the width direction among the opening edges formed around the opening,
The floor panel abutting portion has a distance from an end portion on one end side of the closing portion to an end portion on the other end side of the floor panel abutting portion in a side view of the lid body on the one end side of the closing portion. It is formed to be shorter than the length from the end to the end on the other end side,
The floor panel contact portion is inserted into the opening portion with the abutting portion when the end portion on one end side of the closing portion is abutted against the upper surface side of the main surface, and the closing portion is The process of rotating the lid body in the closing direction with respect to the floor panel until the opening is closed, or the closing part opens the opening and pulls out the floor panel contact part from the opening. In the process of rotating the lid body in the direction to open with respect to the floor panel, the end on the other end side of the floor panel abutting portion with respect to the opening edge on the opposite side of the mounting direction of the opening The double floor lid is characterized in that the lid is not locked and the lid can be attached to and detached from the opening. The lid of the double floor according to claim 1, wherein a step surface that is lower than the upper surface of the main surface and substantially parallel to the upper surface is formed around the opening,
The abutting portion is a portion in which an end portion on one end side of the closing portion is abutted against the stepped surface, and the double floor lid body. In a lid that is detachably attached to an opening of a flat floor panel having two substantially parallel principal surfaces, the lid is
When the lid is attached to the opening, the closure is configured to close the opening from the upper surface side of the main surface;
When the length in the width direction orthogonal to the mounting direction for mounting the lid to the opening is shorter than the length in the width direction of the opening, the main surface when the lid is mounted in the opening A floor panel abutting portion in which an end portion on one end side abuts on the lower surface thereof and an end portion on the other end side extends to the opening portion side ;
A connecting portion for connecting the blocking portion and the floor panel contact portion;
When the lid is attached to the opening, an opening edge contact portion that contacts at least the opening edges on both sides in the width direction among the opening edges formed around the opening,
The floor panel contact portion has a distance from an end portion on one end side of the closing portion to an end portion on the other end side of the floor panel contact portion in a side view of the lid body on one end side of the closing portion. Is formed to be shorter than the length from the end of the other end to the end of the other end,
The opening is formed so as to cut an edge of the floor panel,
In the process of attaching the lid to the opening, the closure is centered on the contact portion between the end on one end of the closure and the upper surface side of the main surface, and the closure is viewed in a side view. An arc whose radius is the distance from the end on one end side of the part to the end on the other end of the floor panel abutting portion does not protrude from the outer dimensions of the floor panel , and the mounting of the opening In a situation where there is an opening edge on the opposite side of the direction, the opening edge contact portion is formed so as to contact the opening edge on the opposite side when the lid is attached to the opening . A double-floored lid. In a lid that is detachably attached to an opening of a flat floor panel having two substantially parallel principal surfaces, the lid is
When the lid is attached to the opening, the closure is configured to close the opening from the upper surface side of the main surface;
When the length in the width direction orthogonal to the mounting direction in which the lid is mounted on the opening is formed shorter than the length in the width direction of the opening, and the lid is mounted on the opening , A floor panel abutting portion in which an end portion on one end side abuts on the lower surface of the surface and an end portion on the other end side extends toward the opening side ; and
A connecting portion for connecting the blocking portion and the floor panel contact portion;
When the lid is attached to the opening, an opening edge contact portion that contacts at least the opening edges on both sides in the width direction among the opening edges formed around the opening,
The floor panel contact portion has a distance from an end portion on one end side of the closing portion to an end portion on the other end side of the floor panel contact portion in a side view of the lid body on one end side of the closing portion. In a situation where the opening edge is on the opposite side of the mounting direction of the opening and shorter than the length from the end of the opening to the other end, the lid is mounted on the opening. And a lid for a double floor , wherein the opening edge contact portion is formed so as to contact the opening edge on the opposite side . 5. The double floor lid according to claim 3 , wherein in the situation where the opening edge does not exist on the side opposite to the mounting direction of the opening, the closing portion of the lid and the floor panel contact portion The lid body can be slid and attached to the opening from the side of the floor panel so as to sandwich the upper surface side and the lower surface side of the opening. A double-floor lid characterized by being detachable by sliding the attached lid in the opposite direction to that at the time of wearing. In the lid of the double floor according to any one of claims 1 to 5, wherein the closure part is a lid of a double bed, characterized in that it has a shape made a hole in the main surface. The lid of the double floor according to any one of claims 1 to 6, wherein the position of the end portion on the mounting direction side when the lid is mounted to the opening in the floor panel contact portion is as follows. The double-floor lid body, which is located on the mounting direction side from an intersection with a normal line perpendicular to the floor panel contact portion from an end portion on the mounting direction side of the blocking portion. The double-floor lid according to any one of claims 1 to 7, wherein the lid has an elastic force, and the closing portion and the floor panel contact portion are substantially the same as the thickness of the floor panel. A double-floor lid characterized by being arranged in parallel at a distance. The double floor lid according to any one of claims 1 to 8 , wherein when the lid is attached to the opening, the floor panel is sandwiched between the closed portion and the floor panel contact portion. Features a double-floor lid. A double-floor structure comprising: the double-floor lid and floor panel according to any one of claims 1 to 9; and a support member that is disposed on a horizontal plane of the building and supports the floor panel. .

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