JP2556009Y2 - Tunnel interior plate mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a tunnel interior plate on a side wall of a tunnel such as a road.

[0002]

2. Description of the Related Art The above-mentioned tunnel interior plate is provided for the purpose of improving the visual environment in a tunnel, such as improving the lighting effect by reflection and the like, and improving the decorativeness. Generally, the method of mounting the tunnel interior plate on the tunnel side wall surface is such that a base material is fixed to the tunnel side wall surface so as to correspond to, for example, an upper end portion, a middle portion, and a lower end portion, and the tunnel interior plate is attached to the base material. Fix the reinforcement frame with bolts and nuts. However,
Since this method is inferior in workability, as a measure to improve it, the applicant has previously hooked a hook-shaped hook fixed to a reinforcing frame at the upper end and the middle of the tunnel interior plate to the base material, As for (2), a mounting structure for fixing the reinforcing frame to the base material with a butterfly metal fitting was devised, and a utility model registration application was filed (see Japanese Utility Model Application Laid-Open No. 4-53894). As shown in FIGS. 9 and 10, a mounting portion of the mounting structure using the butterfly metal fitting is provided with a vertically elongated hole 3b in a vertical reinforcing frame 3 fixed to the left and right edges of the panel 2 of the tunnel interior panel 1. Insert both ends of the blade part 5 of the flat plate of the butterfly fitting 4 into the elongated hole 3b, pass a screw 6 through the blade part 5, and insert the tip of the screw 6 into the engaging member 8 which engages with the body edge 7 as the base material. The structure is such that the tunnel interior plate 1 is fixed to the rim 7 by screwing and tightening. Reference numeral 10 denotes a tunnel side wall surface. A hole-in anchor 11 is driven into the tunnel side wall surface 10, and a mounting piece 13 is fixed to the hole-in anchor 11 by a nut 12. Are horizontally fixed with bolts 14.

[0003]

The above-mentioned conventional mounting structure has extremely good workability as compared with the conventional mounting method using bolts and nuts. However, since the blades 5 are simply plate-shaped and have a small rigidity, When tightened with the screw 6, the pressing force for pressing and fixing the tunnel interior plate 1 against the rim 7 becomes slightly insufficient, and a firm fixing is not necessarily performed. Further, since the blade portion 5 has a structure in which the blade portion 5 is engaged with only the center screw 6 at one position, the blade portion 5 may rotate after tightening and fixing, and is slightly unstable. The drawback described above is that the hinge is fixed by pressing the attached member (in this case, the vertical reinforcing frame 3) with a cantilevered blade, and sufficient fixing force can be obtained if the bending rigidity of the blade is small. No, it is based on the characteristics inherent to the general structure of the butterfly fitting. Also, the work of inserting the blade portion 5 into the elongated hole 3b of the vertical reinforcing frame 3 may be slightly troublesome, and it is desirable to further simplify the operation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional disadvantages, and can fix a tunnel interior plate firmly to a base material, and can further improve the workability of mounting the tunnel interior plate. An object of the present invention is to provide a mounting structure for a tunnel interior plate.

[0005]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems is a mounting structure of a tunnel interior plate for attaching a tunnel interior plate to a base material fixed to a side wall surface of a tunnel,
An interior plate mounting plate fixed to the reinforcement frames at the left and right edges of the tunnel interior plate perpendicular to the surface of the tunnel interior plate and having a substantially U-shaped notch with an open upper side, and the interior plate mounting plate fixed to the base material The fitting comprises an engaging member that engages the base material, a screw that is screwed into a screw hole formed in the engaging member, and a hole through which the screw passes. A blade main body having a hole through which the screw is inserted, and a blade bent at right angles from both left and right ends of the blade main body, and contacting the front surface of the base material and forming upper and lower surfaces. The upper edge or the upper edge of the intermediate portion of the blade main body is formed so that a gap is formed between the leg having a substantially U-shaped notch that fits into the base material so as to sandwich it and the leg as viewed from above. A flange portion bent at a right angle from the lower edge; The body was inserted into the notch of the interior plate mounting plate, and the screw was tightened until the blade body of the blade contacted the edge of the notch of the interior plate mounting plate and the leg contacted the base material. It is characterized by the following.

[0006]

In the above construction, since the legs at both ends of the blade directly contact the base material, the blade is stable without any movement due to the frictional force. Furthermore, since the U-shaped cutouts of the legs sandwich the upper and lower surfaces of the base material, the legs do not shift vertically, and the screws are loosened and the frictional force between the base material and the legs is reduced. Even if the height is reduced, the legs still remain engaged with the base material. Thus, the blade portion can securely fix the interior plate mounting plate to the base material.

Further, if the blade is strongly tightened with a screw until a reaction force is generated on the leg contacting the base material, the reaction of the leg against the force in the direction in which the tunnel interior plate is to be peeled off is prevented. Even more force can be resisted to the extent of the force, and the tunnel interior plate is also firmly fixed in this regard.

[0008] Since the wing portion of the butterfly fitting has a bent flange portion in the middle portion instead of a mere plate shape, the bending rigidity is high, and the wing portion can bear a large drag when tightening the screw. Therefore, the blades can press the interior plate mounting plate with a sufficiently large force, and the effect of the legs can be effectively obtained, and the tunnel interior plate can be firmly fixed to the base material. .

The gap between the legs at both ends of the butterfly fitting and the intermediate flange determines the position of the interior plate mounting plate and performs the function of positioning the tunnel interior plate, so that the positioning of the tunnel interior plate is accurate and accurate. It becomes easier and the workability of mounting the tunnel interior plate improves.

Since the substantially U-shaped cutout provided on the interior plate mounting plate has an open shape, it is easy to insert the blade into the cutout.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view showing a state in which a tunnel interior plate 1 according to one embodiment of the present invention is attached to a tunnel side wall surface 10,
FIG. 2 is a front view showing a state where the tunnel interior plate 1 is attached to the tunnel side wall surface 10. Tunnel interior plate 1
A reinforcing frame 21 is fixed around a rectangular panel 2. The reinforcing frame 21 is a vertical reinforcing frame 3 for reinforcing left and right side edges of the panel 2 and a horizontal reinforcing frame for reinforcing upper and lower edges of the panel 2. 22. Although not shown, the lateral reinforcing frame 22 has a simple U-shaped cross section that fits on the edge of the panel 2. As shown in FIG. 5, the vertical reinforcing frame 3 has a flange portion 3 perpendicular to the panel 2 at the U-shaped portion.
a is a cross-sectional shape integrally formed. As shown in FIG. 1, key-shaped hooks 23 are fixed to the upper end portion and the intermediate portion of the vertical reinforcing frame 3 by screws (not shown). As shown in FIG. 5 and FIG. 6, an interior plate mounting plate 25 having a substantially U-shaped notch 25a opened upward is fixed with screws 26.

On the other hand, a predetermined height position corresponding to each of the hooks 23 at the upper end portion and the intermediate portion of the vertical reinforcing frame 3 and the lower end portion of the vertical reinforcing frame 3 The hole-in anchors 11 are driven in at respective height positions corresponding to the interior plate mounting plate 25, and mounting pieces 13, 13 ′ made of angle iron are fixed to the hole-in anchors 11 with nuts 12. The hulls 7, 7 'made of angle iron extending horizontally in the length direction of the tunnel are fixed with bolts 14. The mounting pieces 13 ′ and the body edge 7 ′ corresponding to the upper end and the middle part of the vertical reinforcing frame 3 and the mounting piece 13 and the body rim 7 corresponding to the lower end are mounted upside down. ing. The mounting piece 13 and the body edge 7 constitute a base material. In addition, as the base material, it is also possible to use one member in which the mounting piece 13 and the body edge 7 are integrated.

FIGS. 3 to 8 show details of an attachment structure for attaching the lower end portion of the vertical reinforcing frame 3 to the body edge 7 which is a lower base material.
Shown in Reference numeral 30 denotes a butterfly metal fitting for fixing the interior plate mounting plate 25 fixed to the vertical reinforcing frame 3 of the tunnel interior plate 1 to the trunk edge 7. This butterfly metal fitting 30 has left and right side portions 32a.
A groove 32b that fits into the horizontal portion 7b of the body edge 7; a screw hole 32d is formed in the central portion 32c; and a substantially U-shaped engagement member 32 as viewed from above, and the screw hole of the engagement member 32. 32d
Screw 33 and the hole 3 for inserting the screw 32
4a, and the blade portion 3
4 is a flat blade body 3 having the hole 34a at the center.
4b and a U-shaped notch 34e which is bent at a right angle from both left and right ends of the blade main body 34b, and which comes into contact with the front surface of the body edge 7 and engages with the body edge 7 so as to sandwich the upper and lower surfaces. It has a leg portion 34c and a flange portion 34d bent at a right angle from the upper edge of the intermediate portion of the blade main body portion 34b, and an interior plate mounting plate is provided between the left and right leg portions 34c and the flange portion 34d when viewed from above. A gap 35 for inserting the groove 25 is formed. The notch 34e of the leg 34c of the embodiment
The portion is not merely a U-shape but forms a projection 34f for ensuring engagement with the lower edge of the vertical portion 7a of the body edge 7.

The operation of attaching the above-mentioned tunnel interior plate 1 to the tunnel side wall surface 10 will be described. The hooks 23 attached to the upper end portion and the intermediate portion of the tunnel interior plate 1 are respectively connected to the upper and middle rims of the tunnel side wall surface 10 side. Then, the tunnel interior plate 1 is hung by hanging on the 7 ′, and then the interior plate attachment plate 25 fixed to the lower end portion of the vertical reinforcing frame 3 is fixed to the lower rim 7 by the butterfly metal fitting 30. Butterfly fitting 3
0, the procedure for fixing the interior plate mounting plate 25 to the lower rim 7 will be described.
To the horizontal portion 7b. The notch 25a of the interior board mounting plate 25 is provided at the gap 35 between the leg 34c and the flange 34d.
And the legs 34c at both ends of the blade 34
Is engaged with the vertical portion 7a of the body edge 7. Next, the screw 33 is passed through the hole 34a at the center of the blade main body portion 34b, and the tip portion is screwed into the engaging member 32 and tightened. Then, the blade portion 34 presses the interior plate mounting plate 25 against the body edge 7 and fixes it. .

In the above-described mounting structure, since the legs 34c at both ends of the blade portion 34 directly contact the front surface (vertical portion 7a) of the body edge 7, the blade portion 34 does not move unintentionally due to its frictional force and is stable. It is. Further, since the U-shaped notch 34e of the leg portion 34c engages the vertical portion 7a of the body edge 7 so as to sandwich the vertical portion 7a from above and below, the leg portion 34c does not shift in the vertical direction. Therefore, even if the screw 33 is loosened and the frictional force between the body edge 7 and the leg 34c is reduced,
The leg 34c still remains engaged with the waist edge 7. Thus, the blade portion 34 can securely fix the interior plate mounting plate 25 to the body edge 7.

Further, as shown in FIG. 7, the height H of the leg portion 34c of the blade portion 34 is set to the notch 25a of the interior plate mounting plate 25.
Is slightly larger than the distance h from the edge of the inner panel mounting plate 25 to the front end face of the inner panel mounting plate 25, the inner panel mounting plate 25 receives no pressing force when the leg 34c is lightly applied to the body edge 7. Here, when the screw 33 is tightened strongly, as shown in FIG. 8, the blade body 34b is bent and the left and right legs 34c are slightly curved, and the blade body 34b is fixed to the interior plate mounting plate 25. The interior plate mounting plate 25 is pressed against the body edge 7 and fixed to the edge of the notch 25a. Since the blade body 34b has a flange 34d instead of a mere flat plate, it has high bending rigidity and can bear a large drag when tightening the screws. Therefore, the blade part 34 can press the interior board mounting plate 25 with a sufficiently large force, and the tunnel interior board 1 can be firmly fixed to the rim 7.

Further, since a reaction force is generated in the leg portion 34c which comes into contact with the body edge 7, the blade portion 34 is not affected by a force in a direction in which the tunnel interior plate 1 is peeled off.
Resistance with a greater force up to the amount of the reaction force (that is, the force acting on the screw 33 is large, and the blade portion 34 is strongly
In this regard, the tunnel interior plate 1 is firmly fixed.

Further, with respect to the positioning of the tunnel interior plate 1 in the width direction, the interior plate attachment plate 25 fixed to the vertical reinforcing frame 3 is fixed to the gap between the leg portion 34c of the wing portion 34 of the butterfly fitting 30 and the flange portion 34d. When inserted into the tunnel interior plate 35, the tunnel interior plate 1 is automatically positioned (that is, the gap between adjacent tunnel interior plates 1 is automatically determined), so that the positioning of the tunnel interior plate 1 becomes accurate and easy. Thus, the workability of mounting the interior plate is improved.

Since the substantially U-shaped notch 25a provided on the interior plate mounting plate 25 has an open shape, the insertion of the blade portion 34 into the notch 25a is easy, so that the conventional vertical reinforcing frame can be used. Workability is improved as compared with the structure in which the blade is inserted into the provided long hole.

The height H of the leg portion 34c of the blade portion 34 only needs to be long enough to allow the leg portion 34c to contact the body edge 7 at least in a tightened and fixed state. Therefore, H is substantially equal to h or H> h. H is substantially equal to h, but slightly smaller than h, and the leg 34c before tightening.
Even if there is a gap between the tip of the
It is also conceivable that the leg 3c is brought into contact with the torso 7 by compressing and deforming the interior plate mounting plate 25 side strongly.

Further, in the embodiment, the interior plate mounting plate 25 is provided separately from the vertical reinforcing frame 3 and is fixed with the screws 26. However, if the vertical reinforcing frame 3 has high rigidity, a cutout is formed in the vertical reinforcing frame 3 itself. Then, it is also possible to make the notched portion function as an interior plate mounting plate.

[0022]

[Effects of the Invention] According to the present invention, the legs at both ends of the blades are in direct contact with the base material, so that the blades are stable without moving unnecessarily due to the frictional force. Since the notch portion sandwiches the upper and lower surfaces of the base material, the legs are not displaced in the vertical direction, so that the engagement between the blades and the base material becomes stable and strong, and the tunnel interior plate constrained by the blades Is firmly fixed to the base material.

When the blade is tightened with a screw until a reaction force is generated on the leg in contact with the base material, the blade is not affected by a force in a direction in which the tunnel interior plate is peeled off. Even the reaction force can be resisted with even greater force, and in this respect the tunnel interior plate is firmly fixed.

[0024] Since the wings of the butterfly fitting have not only a plate shape but a bent flange at the middle, the bending rigidity is high, and the interior plate mounting plate can be pressed with a large force. Can be obtained effectively, and the tunnel interior plate can be firmly fixed to the base material.

Since the gap between the legs at both ends of the butterfly fitting and the flange at the intermediate portion performs the function of positioning the tunnel interior plate, the positioning operation of the tunnel interior plate becomes accurate and easy. Mounting workability is improved.

Since the substantially U-shaped cutout of the interior plate mounting plate has an open shape, the insertion of the blade portion into this cutout is easy, and the workability is improved as compared with the conventional elongated hole.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a tunnel interior plate attached to a side wall surface of a tunnel, showing a mode of use of a mounting structure of a tunnel interior plate according to one embodiment of the present invention.

FIG. 2 is a front view of a tunnel interior plate attached to a tunnel side wall surface.

FIG. 3 is a perspective view showing a mounting structure of the tunnel interior plate of the present invention.

FIG. 4 is a perspective view of a wing of the butterfly fitting in FIG. 3;

FIG. 5 is a plan view showing the mounting structure of the tunnel interior board of the present invention.

FIG. 6 is a sectional view taken along line AA in FIG.

FIG. 7 is an explanatory view of a preferable use mode of the butterfly fitting in FIG. 5, and is a view before being fixed by fastening.

FIG. 8 is an explanatory view of a preferred use mode of the butterfly fitting in FIG. 5, and is a view showing a state after fastening and fixing;

FIG. 9 is a plan view showing a conventional mounting structure for a tunnel interior plate.

FIG. 10 is a sectional view taken along the line BB in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel interior board 2 Panel 3 Vertical reinforcement frame (reinforcement frame) 3a Flange part 7 Body edge (base material) 10 Tunnel side wall 25 Interior board attachment plate 25a Notch 30 Butterfly fitting 32 Engaging member 32d Screw hole 33 Screw 34 Blade Portion 34a Hole 34b Blade Main Body 34c Leg 34d Flange 34e U-shaped Notch

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-4197 (JP, U) JP-A 4-53894 (JP, U) JP-A 1-177333 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A mounting structure for mounting a tunnel interior plate on a base material fixed to a side wall surface of a tunnel, wherein the tunnel interior plate is fixed to a reinforcement frame on left and right edges of the tunnel interior plate so as to be perpendicular to the surface of the tunnel interior plate. An interior plate mounting plate having a substantially U-shaped notch with an open upper side, and a butterfly fitting for fixing the interior plate mounting plate to the base material, wherein the butterfly fitting engages with the base material. A mating member, a screw screwed into a screw hole formed in the engaging member, and a blade portion having a hole for passing the screw at the center, the blade portion having a hole for passing the screw. Department and
A leg that is bent at right angles from the left and right ends of the blade body, and has a substantially U-shaped notch that contacts the front surface of the base material and fits on the base material so as to sandwich the upper and lower surfaces. A flange portion bent at a right angle from an upper edge or a lower edge of an intermediate portion of the blade main body so that a gap is formed between the blade portion and the blade portion. The main body was inserted into the notch of the interior plate mounting plate, and the screw was tightened until the blade body of the blade contacted the edge of the notch of the interior plate mounting plate and the leg contacted the base material. A mounting structure for a tunnel interior plate, characterized in that: