JP4129316B2 - Floor panel fixing tool and floor panel fixing method using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor panel fixing tool for fixing a floor panel to a support mechanism and a floor panel fixing method using the same.
[0002]
[Prior art]
2. Description of the Related Art A clean floor for a semiconductor manufacturing factory or a large computer employs a double floor in which a grating, which is a kind of floor panel, is laid on a support mechanism such as a support leg for the purpose of air conditioning or the like. A large number of openings are formed in the grating, and air conditioning or the like is performed through the openings. In this double floor, the grating is fixed to the support leg by a fixture, and further, equipment such as a semiconductor manufacturing facility and a computer is fixed to the grating. This prevents the device from falling over when an earthquake occurs. In particular, in recent years, there has been an increasing tendency to prevent damage caused by the earthquake disaster, and refurbishment work for fixing the support legs and the grating in the existing clean room that has not been fixed at the time of construction is being promoted.
[0003]
A conventional method for fixing the grating to the support leg will be described with reference to FIG. A large number of support legs 207 including a lower pedestal 201, a column 203, and an upper pedestal 205 are installed on a floor base G such as concrete at a predetermined interval to constitute a support mechanism. A grating 209 is laid on the support leg 207. Normally, a corner portion of four adjacent gratings 209 is placed on one support leg 207, but FIG. 5 shows only the corner portions of two gratings 209 in the vertical direction in the drawing for convenience of explanation. Has been. An annular washer 211 is placed on the corners of both gratings 209 and 209, and a set screw 213 is inserted downward from the center of the washer 211. The set screw 213 passes through a screw hole 215 formed by cutting out a corner of the grating 209 and is screwed into the lower upper base 205. The grating 209 is fixed to the support leg 207 by the washer 211 and the set screw 213.
[0004]
A double floor in which a floor frame (not shown) is stretched vertically and horizontally on the support legs 207 to form a support mechanism with the support legs 207 and the floor frame, and the grating 209 is fixed to the floor frame. is there.
[0005]
[Problems to be solved by the invention]
In this fixing method, the upper surfaces of the washer 211 and the set screw are located further above the upper surface of the grating 209. Therefore, it is dangerous for an operator to hit the washer 211 or the like. In order to prevent the device from being tilted, the device cannot be installed on the washer 211. Moreover, even if it is attempted to renovate an existing clean room in which equipment is already installed and fix the grating 209 in the vicinity of the equipment legs, the equipment legs may interfere with the installation of the washer 211 in some cases. Further, when the fixed grating 209 is peeled off for the purpose of maintenance or the like, it is necessary to remove the set screw 213 with a tool one by one, and there is a problem that much labor is required.
[0006]
The present invention has been made in view of these problems, and it is an object of the present invention to provide a floor panel fixture that does not protrude upward from the floor panel and that reduces the labor when the floor panel is peeled off. And
[0007]
[Means for Solving the Problems]
The present invention made to solve the above-described problems is a floor panel fixing tool for fixing a floor panel to a support mechanism, and includes an insertion pin that can be moved forward and backward, and a rear end portion of the insertion pin. The insertion pin includes a lever that contacts and advances the insertion pin, and a coil that pushes the insertion pin backward and moves the insertion pin forward and backward by operating the lever. The front end of the insertion pin is inserted into the insertion hole of the floor panel in the forward movement state, and the front end is extracted from the insertion hole in the retracted state of the insertion pin, and is disposed below the upper surface of the floor panel. and it is used Te. The present invention is also a floor panel fixture for fixing a floor panel to a support mechanism, and includes an insertion pin that can be moved forward and backward, and a lever loosely attached to the insertion pin. And a forward / backward mechanism for moving the insertion pin forward / backward by operating the front end of the insertion pin through the insertion hole of the floor panel in the forward movement state of the insertion pin. Is configured to be extracted from the insertion hole, and is disposed below the upper surface of the floor panel.
[0008]
Since this floor panel fixture is used by being disposed below the upper surface of the floor panel, it is possible for the operator to install the equipment on the floor panel fixture without being crammed by the operator, and to install the leg of the existing equipment. It can also be applied to a floor panel in the vicinity of a section. Then, the floor panel and the support mechanism can be fixed by advancing the insertion pin, and the floor panel and the support mechanism can be released by retreating the insertion pin. The floor panel can be easily peeled off if necessary.
[0009]
In this invention, if the lock mechanism is provided and the movement of the insertion pin is locked in the advanced state of the insertion pin, the fixing is not accidentally released after the floor panel is fixed to the support mechanism .
[0010]
If the floor panel is fixed using these floor panel fixing tools, the fixing operation and the fixing release operation between the floor panel and the support mechanism can be made extremely easy .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
[0012]
Fig.1 (a) and FIG.1 (b) are the fragmentary sectional views by which the floor panel fixing tool 1 concerning one Embodiment of this invention was shown. FIG. 1A shows a state in which an insertion pin 3 described later has advanced, and FIG. 1B shows a state in which the insertion pin 3 has retracted. The floor panel fixture 1 includes a base plate 5, a “U” -shaped frame 7 provided on the base plate 5, an insertion pin 3, a lever 9, a leaf spring 11, and a coil 13.
[0013]
The insertion pin 3 includes a front end portion 15, a central portion 17, and a rear end portion 19, and a small diameter is formed between the central portion 17 and the rear end portion 19 to form an annular retaining groove 21. The outer diameter of the front end portion 15 is slightly smaller than the outer diameter of the central portion 17. Further, a hook-like stopper 23 is provided near the retaining groove 21 of the rear end portion 19.
[0014]
The insertion pin 3 passes through the front through hole 25 and the rear through hole 27 formed in the frame 7. The inner diameter of the front through hole 25 is slightly larger than the outer diameter of the front end portion 15 of the insertion pin 3. Further, the inner diameter of the rear through hole 27 is slightly larger than the outer diameter of the rear end portion 19 of the insertion pin 3 and slightly smaller than the outer diameter of the stopper 23.
[0015]
The lever 9 is rotatably supported by a pin 29. The lever 9 includes an operation portion 31 in front of the pin 29 (left side in FIG. 1A) and a contact portion 33 continuous with the operation portion 31. The contact portion 33 is wider than the operation portion 31 in the direction perpendicular to the paper surface in FIG. The contact portion 33 is in contact with the rear end portion 19 of the insertion pin 3.
[0016]
The leaf spring 11 includes a front drooping portion 35, a horizontal portion 37 continuous with the front drooping portion 35, a rear drooping portion 39 perpendicular to the horizontal portion 37, and a pressing portion 41 formed at the upper end of the rear drooping portion 39. I have. The rear hanging portion 39 is formed with a retaining hole 43 that is slightly larger than the outer diameter of the central portion 17 of the insertion pin 3. The insertion pin 3 passes through the hole formed in the retaining hole 43 and the front hanging part 35.
[0017]
The coil 13 is wound around the outer periphery of the front end portion 15 of the insertion pin 3. The rear end of the coil 13 is in contact with the front end of the central portion 17 of the insertion pin 3. The front end of the coil 13 is in contact with the front hanging portion 35 of the leaf spring 11. The coil 13 is attached in a compressed state.
[0018]
In order to advance the insertion pin 3 in the floor panel fixture 1, the operation portion 31 of the lever 9 is operated in the arrow direction indicated by R1 from the state shown in FIG. Then, the lever 9 rotates around the pin 29 and the abutting portion 33 pushes the rear end portion 19 of the insertion pin 3 forward. Thereby, the insertion pin 3 moves forward. At the same time, the coil 13 is compressed, and this coil 13 presses the front hanging portion 35 of the leaf spring 11. Since the front hanging portion 35 is formed slightly obliquely with respect to the vertical direction, the entire leaf spring 11 rotates in the counterclockwise direction in FIG. Then, the rear hanging part 39 moves substantially upward, and the latching hole 43 provided in the rear hanging part 39 and the latching groove 21 of the insertion pin 3 are latched. By this latching, the movement of the insertion pin 3 is locked.
[0019]
In order to retract the insertion pin 3 in the floor panel fixture 1, the pressing portion 41 of the leaf spring 11 is pressed downward from the state shown in FIG. Then, the rear drooping portion 39 of the leaf spring 11 moves downward, and the latching between the latching groove 21 and the latching hole 43 is released. Since the insertion pin 3 is pushed backward by the coil 13, the insertion pin 3 moves backward. When the stopper 23 provided on the insertion pin 3 comes into contact with the inner wall of the frame 7, the insertion pin 3 is prevented from moving backward, and the insertion pin 3 is prevented from falling off the frame 7.
[0020]
FIG. 2 is a partial cross-sectional view showing a state in which a grating 45, which is a kind of floor panel, is fixed to a support leg 47 using the floor panel fixture 1 shown in FIGS. 1 (a) and 2 (b). It is.
[0021]
The support leg 47 includes a lower pedestal 49, a support column 51, an upper pedestal 53, a stay 55, and a nut 57. The lower pedestal 49 is fixed to the floor base G with bolts or the like (not shown). The upper pedestal 53 includes a flat plate portion 59 and a socket portion 61, and the inner periphery of the socket portion 61 is subjected to female screw processing. A support column 51 is screwed into the socket portion 61. The height of the upper pedestal 53 is adjusted by changing the amount of the column 51 screwed into the socket part 61. The upper pedestal 53 is fixed to the support column 51 by a nut 57. The stay 55 includes an arm 63 extending upward from both sides of the support column 51 and a fixing plate 65 provided at the upper end of the arm 63.
[0022]
A grating 45 is placed on the flat plate portion 59 of the upper pedestal 53. Normally, four gratings 45 are placed on one flat plate portion 59, but in FIG. 2, only one grating 45 is shown for convenience of explanation. The grating 45 includes end bars 67 at both left and right ends (only the left end bar 67 is shown in FIG. 2), and a plurality of horizontal bars 69 and end bars 67 provided between the two end bars 67 in parallel with the end bar 67. It is comprised from many vertical bars 71 perpendicular | vertical. A region surrounded by the vertical bar 71 and the horizontal bar 69 is an opening. In FIG. 2, the grating 45 is placed on the flat plate portion 59 by the end bar 67 coming into contact with the flat plate portion 59. An insertion hole 73 is formed in the horizontal bar 69 closest to the end bar 67. The insertion hole 73 may be drilled in the horizontal bar 69 from the right side in FIG. 2 by a cutting tool such as a drill, or may be drilled by a cutting tool that penetrates the end bar 67 from the left side in FIG.
[0023]
On the fixing plate 65 of the stay 55, the floor panel fixing tool 1 is fixed by a bolt or the like (not shown). In FIG. 2, the insertion pin 3 moves forward, and the front end portion 15 of the insertion pin 3 is inserted through the insertion hole 73. In this state, the grating 45 is fixed to the floor panel fixture 1 by the insertion pin 3, and the floor panel fixture 1 is fixed to the support leg 47 by the stay 55. As a result, the grating 45 is attached to the support leg 47. Fixed. When the lever 9 is operated in this state to retract the insertion pin 3 and the front end 15 of the insertion pin 3 is extracted from the insertion hole 73 of the horizontal bar 69, the fixing of the grating 45 and the support leg 47 is released.
[0024]
In the state where the insertion pin 3 has advanced, the entire floor panel fixture 1 is positioned below the upper surface of the grating 45. Accordingly, it is possible to install the device on the floor panel fixture 1 without the operator's craving, and it can also be applied to the grating 45 in the vicinity of the legs of the existing device. On the other hand, when the insertion pin 3 is retracted for some reason, the lever 9 is positioned above the upper surface of the grating 45. As a result, the operator can be informed of the release of the fixation between the grating 45 and the support leg 47.
[0025]
FIG. 3 is a partial cross-sectional view showing a state in which the grating 45, which is a kind of floor panel, is fixed to the floor frame using the floor panel fixture 1 shown in FIGS. 1 (a) and 2 (b). is there. In FIG. 3, reference numeral 74 denotes hat steel which is a kind of floor frame, and reference numeral 75 denotes a stepped plate.
[0026]
The stepped plate 75 includes a central flat plate portion 77 and side flat plate portions 79 provided on both sides of the central flat plate portion 77 at positions one step lower than the central flat plate portion 77. Further, two leg plates 81 are suspended from the lower side of the central flat plate portion 77. The distance between the two leg plates 81 is substantially equal to the width of the hat steel 74, and the stepped plate 75 is fixed on the hat steel 74 by sandwiching the hat steel 74 between the leg plates 81.
[0027]
A grating 45 is placed on the central flat plate portion 77. Normally, four gratings 45 are placed on one central flat plate portion 77, but in FIG. 3, only one grating 45 is shown for convenience of explanation. The construction of the grating 45 is the same as that shown in FIG. In FIG. 3, the grating 45 is placed on the central flat plate portion 77 by the end bar 67 coming into contact with the central flat plate portion 77. A cushioning material such as a rubber sheet may be provided between the central flat plate portion 77 and the end bar 67. An insertion hole 73 is formed in the horizontal bar 69 closest to the end bar 67.
[0028]
On the side flat plate portion 79, the floor panel fixture 1 is fixed by a bolt or the like (not shown). In FIG. 3, the insertion pin 3 moves forward, and the front end portion 15 of the insertion pin 3 is inserted through the insertion hole 73. In this state, the grating 45 is fixed to the floor panel fixture 1 by the insertion pin 3, and the floor panel fixture 1 is fixed to the hat steel 74, which is the floor frame, by the stepped plate 75, resulting in the grating. 45 is fixed to the floor frame. When the lever 9 is operated in this state to retract the insertion pin 3 and the front end 15 of the insertion pin 3 is extracted from the insertion hole 73 of the horizontal bar 69, the fixing of the grating 45 and the floor frame is released.
[0029]
4 (a) and 4 (b) are partial cross-sectional views showing a floor panel fixture 83 according to another embodiment of the present invention. FIG. 4A shows a state in which the insertion pin 85 has moved forward, and FIG. 4B shows a state in which the insertion pin 85 has moved backward. The floor panel fixture 83 includes a base plate 87, a “U” -shaped frame 89 provided on the base plate 87, an insertion pin 85, a lever 91, a leaf spring 93, and a movable pin 95.
[0030]
The insertion pin 85 includes a front end portion 97 and a main body portion 99. The outer diameter of the front end 97 is slightly smaller than the outer diameter of the main body 99. A protrusion 101 is formed near the center of the main body 99. The insertion pin 85 passes through the front through hole 103 and the rear through hole 105 formed in the frame 89. The inner diameter of the front through hole 103 is slightly larger than the outer diameter of the front end portion 97 of the insertion pin 85. In addition, the inner diameter of the rear through hole 105 is slightly larger than the outer diameter of the main body 99 of the insertion pin 85.
[0031]
The lever 91 is rotatably supported by a pin 107. A long hole 109 is formed near the center of the lever 91. Above the long hole 109 of the lever 91 is an operation unit 111. The lower end of the lever 91 is cut out at two locations, thereby forming a first concave portion 113, a central convex portion 115, and a second concave portion 117. The protruding portion 101 of the insertion pin 85 is inserted into the elongated hole 109, whereby the lever 91 and the insertion pin 85 are loosely attached.
[0032]
The leaf spring 93 has a substantially “let” shape and is loaded inside the frame 89. A part of the leaf spring 93 is bent to form a pin receiving portion 119. A movable pin 95 is disposed between the pin receiving portion 119 and the lower end of the lever 91. The movable pin 95 is movable in the vertical direction and is pressed against the lever 91 by a leaf spring 93.
[0033]
In order to advance the insertion pin 85 in the floor panel fixture 83, the operation unit 111 of the lever 91 is operated in the direction of the arrow indicated by R2 from the state shown in FIG. Then, the lever 91 rotates counterclockwise around the pin 107. This rotational motion is transmitted to the insertion pin 85 by the protrusion 101, and the insertion pin 85 moves forward. During the rotation of the lever 91, the contact portion of the lower end of the lever 91 with the movable pin 95 moves from the second concave portion 117 to the first concave portion 113 through the central convex portion 115. When the insertion pin 85 finishes moving forward, the first recess 113 and the movable pin 95 are engaged with each other, and the movement of the insertion pin 85 is locked. The front end 97 of the insertion pin 85 is inserted into the insertion hole of the floor panel. In this state, the floor panel is fixed to the floor panel fixture 83 by the insertion pin 85, and the floor panel fixture 83 is fixed to the support mechanism. As a result, the floor panel is fixed to the support mechanism.
[0034]
In order to retract the insertion pin 85 in the floor panel fixture 83, the operation portion 111 of the lever 91 is operated in the arrow direction indicated by R3 from the state shown in FIG. Then, the lever 91 rotates clockwise about the pin. This rotational motion is transmitted to the insertion pin 85 by the protrusion 101, and the insertion pin 85 moves backward. And the front-end part 97 of the insertion pin 85 is extracted from the insertion hole of a floor panel, and fixation with a floor panel and a support mechanism is cancelled | released.
[0035]
In this floor panel fixture 83, the lever 91 does not move significantly upward. Therefore, the entire floor panel fixture 83 can be positioned below the upper surface of the floor panel, regardless of whether the insertion pin 85 is in the forward state or the backward state.
[0036]
As mentioned above, although this invention was demonstrated taking the clean room as an example, the floor panel fixing tool of this invention is not restricted to a clean room, It can apply to the double floor of all uses. Moreover, the floor panel fixed by the floor panel fixing tool of the present invention is not limited to grating, and can be applied to all floor panels such as fiber reinforced concrete panels (so-called GRC) and aluminum die cast panels.
[0037]
【The invention's effect】
As described above, the floor panel fixture of the present invention hardly protrudes upward than the floor panel. Therefore, the operator does not crawl, and even if the device is installed above the floor panel fixture, the device does not tilt, and even if the device is already installed, the floor panel is fixed near the leg of the device. You will be able to install tools. Furthermore, since the floor panel fixture of the present invention can be easily detached from the support mechanism as necessary, the floor panel can be easily peeled off.
[Brief description of the drawings]
1 (a) and 1 (b) are partial cross-sectional views showing a floor panel fixture according to an embodiment of the present invention. FIG. 1 (a) shows a state in which the insertion pin has advanced, and FIG. 1 (b) shows a state in which the insertion pin has retracted.
FIG. 2 is a partial cross-sectional view showing a state in which the grating is fixed to the support leg using the floor panel fixing tool shown in FIGS. 1 (a) and 2 (b).
FIG. 3 is a partial cross-sectional view showing a state in which the grating is fixed to the floor frame using the floor panel fixture shown in FIGS. 1 (a) and 2 (b).
4 (a) and 4 (b) are partial sectional views showing a floor panel fixture according to another embodiment of the present invention. FIG. 4 (a) shows a state in which the insertion pin has advanced, and FIG. 4 (b) shows a state in which the insertion pin has retracted.
FIG. 5 is a front view showing a conventional floor panel fixing method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 83 ... Floor panel fixing tool 3, 85 ... Insertion pin 5, 87 ... Base plate 7, 89 ... Frame 9, 91 ... Lever 11, 93 ... Leaf spring 13 ... Coil 15, 97 ... front end 17 ... center 19 ... rear end 21 ... retaining groove 23 ... stopper 25, 103 ... front through hole 27, 105 ... Rear through-holes 29, 107 ... pins 31, 111 ... operation part 33 ... contact part 35 ... front hanging part 37 ... horizontal part 39 ... rear hanging part 41 ... pressing Part 43 ... Hooking hole 45 ... Grating 47 ... Support leg 73 ... Through hole 74 ... Hat steel 75 ... Stepped plate 95 ... Movable pin 99 ... Main body 101... Projection 109... Long hole 113... First recess 115. And second recess 119 ... pin receiving portion

Claims (4)

A floor panel fixture for fixing a floor panel to a support mechanism, comprising an insertion pin that can be moved forward and backward , a lever that abuts against a rear end portion of the insertion pin and advances the insertion pin, and the insertion pin. And a forward / backward mechanism for moving the insertion pin forward and backward by operating the lever. The front end of the insertion pin is inserted into the floor panel when the insertion pin is in the advanced state. A floor panel fixture characterized by being inserted into a hole and configured so that a front end portion is extracted from the insertion hole in a retracted state of the insertion pin, and is disposed below the upper surface of the floor panel. A floor panel fixture for fixing a floor panel to a support mechanism, comprising: an insertion pin that can be moved forward and backward ; and a lever that is loosely attached to the insertion pin, and the insertion is performed by operating the lever. And a forward / backward mechanism for advancing / retreating the pin.When the insertion pin moves forward, the front end of the insertion pin is inserted into the insertion hole of the floor panel, and when the insertion pin is retracted, the front end is extracted from the insertion hole. A floor panel fixture, wherein the floor panel fixture is configured to be used and disposed below the upper surface of the floor panel. The floor panel fixture according to claim 1 or 2 , further comprising a lock mechanism that locks the movement of the insertion pin in a forward state of the insertion pin. A step of fixing the floor panel fixture according to any one of claims 1 to 3 to a support mechanism, advancing an insertion pin, and inserting a front end portion of the insertion pin into an insertion hole of the floor panel. Floor panel fixing method.

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