JP4673225B2 - Falling object defense net and its construction method - Google Patents

Description

  The present invention relates to a falling object defense net that is installed in a building such as a housing complex or a public facility, and protects residents, pedestrians, and the like from falling objects, and a construction method thereof.

  In buildings such as apartment buildings and public facilities, there is a risk of falling objects (laundries, futons, garbage, etc.) from windows and verandas on upper floors. Doing so could result in a serious accident involving injury. Therefore, conventionally, a fallen object protection net is installed on the outer wall or the like of a building to receive the fallen object in the air (see Patent Document 1).

  The conventional fallen object defense net described in Patent Document 1 includes a line grid net unit and a rod-like connecting member (that is, a support column) that supports the net grid net unit. The line grid net unit has a line grid net body that receives a fallen object and a reinforcing metal pipe member attached to a side edge of the line grid net body, and the connecting member has a cross section that receives the reinforcing metal pipe member. It has a substantially C-shaped tubular portion.

And when constructing a fall object defense net in the area to be protected, after installing the connecting member on the outer wall of the building, etc., by inserting the reinforcing metal pipe member of the wire grid net unit into the tubular portion of the connecting member, The line grid net unit is attached to the connecting member.
Japanese Patent No. 2841185

  In the conventional fallen object defense net (Patent Document 1), the reinforcing metal pipe member of the wire lattice net unit is inserted into the tubular part of the connecting member. In this case, the shaft of the tubular part and the reinforcing metal pipe member Since it is necessary to match the shaft, there is a problem that the insertion work is extremely troublesome and the workability is poor.

  Therefore, a main problem of the present invention is to provide a fallen object defense net and a construction method thereof that can improve the workability.

  The invention described in claim 1 is “a net unit having a planar net 26 that receives the fallen object 16 and a frame 28 that is disposed along the lower surface of the peripheral edge of the net 26 and supports the net 26. 20 and a rod-like column main body 48 disposed along the lower surface of the frame body 28, and projecting upward in the center in the width direction on the upper surface of the column main body 48, and on the outer surface of the frame body 28. It is a fallen object protection net | network 10 "provided with the support | pillar 22 which has the junction part 52 joined.

  In this invention, the frame body 28 is disposed along the lower surface of the peripheral edge of the net 26 constituting the net unit 20, and the joining portion 52 constituting the support column 22 is detachably joined to the outer surface of the frame body 28. Has been. Therefore, the net unit 20 can be attached to and detached from the support column 22 on the lower side of the net unit 20. In addition, since the joint portion 52 is provided so as to protrude upward in the center in the width direction on the upper surface of the column main body 48, the unit that receives the net unit 20 on both sides of the joint portion 52 on the upper surface of the column main body 48. The receiving part 48a is secured. Accordingly, the two adjacent net units 20 can be supported by the single support 22.

  The invention described in claim 2 is the “fallen object defense net 10” described in claim 1, wherein “the holes 28 and 60 penetrating the frame body 28 and the joint portion 52 are formed. The net unit 20 is detachably attached to the support column 22 by bolts 42 inserted through the holes 44, 60 ".

  In the present invention, a bolt is used as a joining means between the frame 28 constituting the net unit 20 and the joining portion 52 constituting the support column 22.

  The invention described in claim 3 is “a net unit having a planar net 26 that receives the fallen object 16 and a frame 28 that is disposed along the lower surface of the peripheral edge of the net 26 and supports the net 26. 20 and a rod-like column main body 48 disposed along the lower surface of the frame body 28, and a column 22 having a joint 52 provided so as to protrude upward in the center in the width direction on the upper surface of the column main body 48. (A) The plurality of support columns 22 are arranged in parallel at a predetermined interval so as to protrude from the outer wall 18 of the building 12 in a substantially horizontal direction. (B) The net unit 20 is placed on the upper surface of the column main body 48 of the two adjacent columns 22, and (c) the joint portion 52 of the two adjacent columns 22 is connected to the net unit. Bonded to the outer surface of the frame 28 at 20, a construction method "falling object barrier net.

  In the present invention, since the plurality of support columns 22 are arranged in parallel with a predetermined distance from each other, a space for allowing the net unit 20 to pass between the two adjacent support columns 22 can be secured. Therefore, when the net unit 20 is placed on the upper surface of the column main body 48, the net unit 20 can be lifted upward from below the column 22 through this space. Further, since the frame body 28 of the net unit 20 is disposed along the lower surface of the peripheral edge portion of the net 26, when joining the joint portion 52 to the outer surface of the frame body 28, the joining work is performed on the net unit. This can be done under 20. In addition, since the joint portion 52 is provided so as to protrude upward in the center in the width direction on the upper surface of the column main body 48, the unit that receives the net unit 20 on both sides of the joint portion 52 on the upper surface of the column main body 48. The receiving part 48a can be secured. Accordingly, the two adjacent net units 20 can be supported by the single support 22.

  The invention described in claim 4 is the “method for constructing a fallen object defense net” described in claim 3, wherein “after the step (c), the decorative cover 24 is attached to the side end of the net unit 20. It is characterized by “wearing”.

  In the present invention, the side end of the net unit 20 is covered with a decorative cover 24.

  According to the invention described in claims 1 to 4, since the work of attaching the net unit 20 to the support column 22 can be performed on the lower side of the net unit 20, the workability can be greatly improved. In addition, when the net unit 20 is damaged due to the falling object 16 colliding with the net 26, the net unit 20 can be easily replaced from the lower side.

  FIG. 1 is a perspective view showing a building 12 to which a fallen object defense net 10 according to the present invention is applied, and FIG. 2 is a plan view showing the fallen object defense net 10.

  The building 12 shown in FIG. 1 is specifically a condominium. A veranda 14 is provided on each floor, and a passage through which people pass or a private garden is provided in front of the first floor portion. ing. Therefore, it is necessary to avoid the danger that a fallen object (laundry, futon, garbage, etc.) 16 that has fallen from the upper floor veranda 14 hits a person in a passage or a private garden. A falling object defense net 10 is provided so as to protrude in a substantially horizontal direction. However, the fallen object defense net 10 can be applied to any building other than a condominium, such as a public facility or a highway, where a danger caused by a fallen object 16 occurs, and the dimensions of each component according to the application location. Can be changed.

  Below, the fallen object defense net 10 applied to the building 12 will be described.

  As shown in FIG. 2, the fallen object defense net 10 includes a net unit 20, a support 22 that supports the net unit 20, and a decorative cover 24.

  As shown in FIGS. 3 and 4, the net unit 20 includes a planar net 26 that receives the fallen object 16, a frame 28 that is disposed along the lower surface of the peripheral edge of the net 26, and supports the net 26, A clamping member 30 that clamps the net 26 on the upper surface of the frame body 28 is provided.

  The net 26 (FIGS. 3 and 4) is formed in a substantially rectangular planar shape by joining vertical and horizontal strands 32 intersecting each other at the intersection, and the vertical direction of the net 26 (in FIGS. 3 and 4). A bent portion 34 (FIG. 4) that is bent at a right angle downward is formed at the edge in the left-right direction. Each strand 32 constituting the net 26 is made of metal (stainless steel, aluminum, etc.) or high-strength fibers (aramid fiber, etc.) so that it can withstand the impact when it receives the fallen object 16 (FIG. 1). It is formed with a predetermined wire diameter by a high strength material.

  In this embodiment, the “vertical direction” means a direction perpendicular to the outer wall 18 of the building 12, and the “lateral direction” means a direction parallel to the outer wall 18 of the building 12. And

  The frame body 28 (FIGS. 3 and 4) is formed in a substantially rectangular frame shape by connecting four rod-shaped members 36 with corner fittings (not shown). Each rod-shaped member 36 is a hollow member having a substantially rectangular cross section made of a high-strength material such as metal (aluminum, stainless steel, etc.). The side surface 36d is formed perpendicular to the upper surface 36a and the lower surface 36b. A plurality of screw holes 40 (FIG. 4) into which screws 38 for fixing the clamping member 30 are screwed are formed in the upper surface 36a and the outer surface 36d of the pair of rod-shaped members 36 that face each other in the “vertical direction”. A plurality of holes 44 (FIG. 7) through which the bolts 42 are inserted are formed in the inner side surface 36c and the outer side surface 36d of the pair of rod-like members 36 that are opposed in the “lateral direction”.

  The clamping member 30 (FIGS. 3 and 4) is a bar having a substantially L-shaped cross section made of a high-strength material such as metal (aluminum, stainless steel, etc.), and is opposed to the upper surface 36a of the bar-shaped member 36 constituting the frame body 28. The horizontal portion 30a and the vertical portion 30b facing the outer side surface 36d of the rod-shaped member 36 are configured. The horizontal portion 30a and the vertical portion 30b have a plurality of holes 46 (FIG. 4) through which the screws 38 are inserted, and screw holes 47 (FIG. 8) into which the decorative cover mounting screws 45 are screwed. Is formed.

  When assembling the net unit 20, the peripheral portion of the net 26 is placed on the upper surface of the frame body 28, and the bent portion 34 formed at the edge in the vertical direction of the net 26 is used as the rod-shaped member 36 constituting the frame body 28. It is arranged along the outer side surface 36d. Then, the clamping member 30 is positioned on the upper surface of the peripheral edge of the net 26, and a screw 38 is inserted into each hole 46 formed in the clamping member 30, and the screw 38 is screwed into the screw hole 40 formed in the frame body 28. Match. Then, the periphery of the net 26 is clamped by the upper surface of the frame body 28 and the clamping member 30, and the net 26 is supported inside the frame body 28.

  Therefore, when an excessive impact is applied to the net 26 when receiving the fallen object 16, the net 26 slides at the clamping position by the clamping member 30, and the impact due to the fallen object 16 is converted into sliding energy and efficiency. Well absorbed.

  As shown in FIGS. 5 and 6, the column 22 includes a rod-shaped column main body 48 disposed along the lower surface 36 b of the rod-shaped member 36 constituting the frame 28 (FIGS. 3 and 4), and the frame 28. 7 is provided with a joint portion 52 that is detachably joined to the outer surface 36d of the rod-like member 36 via a spacer 50 (FIG. 7), and two fixing members 54 that are fixed to the outer wall 18 of the building 12. Yes.

  Since the struts 22 are required to have strength to receive the net unit 20, the strut body 48, the joint portion 52, and the fixing member 54 are formed of a high-strength material such as metal (stainless steel, aluminum, etc.). .

  The column main body 48 (FIGS. 5 and 6) is a hollow member having a substantially square cross section, and two protrusions 56 are parallel to each other over the entire length in the longitudinal direction on each of the four inner wall surfaces of the column main body 48. Is formed. Each protrusion 56 has both a function of reinforcing the column main body 48 and a function of preventing rattling against the mounting column 58 (FIG. 13). The height of each protrusion 56 is set so that the tip thereof contacts the outer surface of the mounting column 58. A screw hole 49 (FIG. 7) into which the decorative cover mounting screw 45 is screwed is formed on the lower surface of the column main body 48.

  The joint portion 52 (FIGS. 5 and 6) is a plate-like or bar-like (plate-like in this embodiment) member that protrudes upward at the center in the width direction on the upper surface of the column main body 48, and the column main body 48. The column main body 48 is formed over the entire length in the longitudinal direction so as to be perpendicular to the upper surface of the column. Therefore, on the upper surface of the column main body 48, unit receiving portions 48 a that receive the net unit 20 are secured on both sides of the joint portion 52. A plurality of holes 60 (FIGS. 5 and 7) through which the bolts 42 for connecting the net unit 20 are inserted are formed in the joint portion 52, and the bolts 62 for attaching the fixing member 54 are formed. A plurality of holes 64 (FIG. 6) are formed.

  Each fixing member 54 (FIGS. 5 and 6) is a bar having a substantially L-shaped cross section, and is joined to a horizontal portion 54a fixed to the ceiling portion 14a (FIGS. 2 and 10) of the veranda 14 (FIG. 1). And a vertical portion 54b attached to the portion 52. A plurality of holes 68 (FIG. 5) through which the bolts 66 (FIG. 10) are inserted are formed in the horizontal portion 54a, and a plurality of holes 70 (FIG. 5) through which the bolts 62 are inserted are formed in the vertical portion 54b. 6) is formed.

  Then, as shown in FIG. 6, two fixing members 54 are arranged on both sides of the joint portion 52 so as to sandwich them, and bolts 62 are inserted into the holes 70 of the respective fixing members 54 and the holes 64 of the joint portion 52. A nut 72 is screwed onto the bolt 62.

  As shown in FIGS. 7 and 8, the decorative cover 24 is used to add decorativeness to the side ends of the net unit 20 and the support column 22, and is made of a metal such as aluminum or a synthetic resin such as ABS or acrylic. It is a long member having a predetermined cross-sectional shape. The cross-sectional shape of the decorative cover 24 is not particularly limited, but in this embodiment, the lower horizontal portion 24a, the vertical portion 24b, the intermediate horizontal portion 24c, the inclined portion 24d, the curved portion 24e, the upper horizontal portion 24f and A shape in which the stepped portion 24g is continuous is employed. A hole 74 (FIGS. 7 and 8) through which the screw 45 is inserted is formed in the lower horizontal portion 24a and the stepped portion 24g, and a corner portion formed by the lower horizontal portion 24a and the vertical portion 24b is formed. A screw hole 76 (FIG. 7) into which a screw (not shown) for attaching the end cap is screwed is formed on the inner surface and the inner surface of the upper horizontal portion 24f.

  When the decorative cover 24 is attached to the end of the net unit 20 in the vertical direction, the stepped portion 24g is fixed to the holding member 30 with screws 45 as shown in FIG. On the other hand, when the decorative cover 24 is attached to the lateral end of the net unit 20, the lower horizontal portion 24a is fixed to the column body 48 of the column 22 with screws 45, as shown in FIG. The step portion 24 g is fixed to the joint portion 52 of the support column 22 via the mounting bracket 78.

  As shown in FIG. 7, the mounting bracket 78 is formed in a substantially L shape having a horizontal portion 78a and a vertical portion 78b, and a screw 45 to which a decorative cover mounting screw 45 is screwed is fitted in the horizontal portion 78a. A hole 80 is formed, and a plurality of holes 82 through which the bolts 42 are inserted are formed in the vertical portion 78b. The vertical portion 78 b of the mounting bracket 78 is fixed to the joint portion 52 using the bolt 42 inserted through the hole 82, and the stepped portion 24 g of the decorative cover 24 is horizontal using the screw 45 screwed into the screw hole 80. It is fixed to the part 78a.

  At the corner portion of the net unit 20, as shown in FIG. 2, the decorative cover 24 attached to each of the vertical direction side end portion and the horizontal direction side end portion is joined at a right angle via the corner member 84. .

  When constructing the fallen object defense net 10 (FIGS. 1 and 2), first, as shown in FIGS. 9 and 10, a nut 86 is embedded in the ceiling portion 14a of the veranda 14 (FIG. 1). The bolt 66 is inserted into the hole 68 of the fixing member 54 constituting the column 22, and the bolt 66 is screwed into the nut 86. In this way, the plurality of support columns 22 are arranged in parallel at predetermined intervals so as to protrude from the outer wall 18 of the building 12 in a substantially horizontal direction (FIG. 9).

  Subsequently, as shown in FIG. 11, the two net units 20 are placed side by side in the vertical direction on the upper surface of the column main body 48 of the two adjacent columns 22. At this time, on the upper surface of the column main body 48, unit receiving portions 48 a (FIG. 6) that receive the net unit 20 are secured on both sides of the joint portion 52. One net unit 20 can be supported.

  Then, as shown in FIG. 12, each net unit 20 received by the unit receiving portion 48 a is fixed to the column 22 using bolts 42. That is, the bolt 42 is inserted into the hole 44 (FIG. 7) of the frame body 28 constituting each net unit 20 and the hole 60 (FIG. 7) of the joint portion 52 constituting the column 22, and the nut 43 is inserted into the bolt 42. Screw together. At this time, the mounting bracket 78 is attached to the side surface of the joint portion 52 using the bolt 42 in the support column 22 disposed at the lateral end.

  Thereafter, as shown in FIGS. 7 and 8, the decorative cover 24 is attached to the side end portions of the net unit 20 and the support column 22. That is, at the longitudinal side end of the net unit 20, the stepped portion 24g of the decorative cover 24 is fixed to the clamping member 30 using the screw 45 (FIG. 8). Further, at the lateral end of the net unit 20, the lower horizontal portion 24 a of the decorative cover 24 is fixed to the support column 22 using the screw 45, and the stepped portion 24 g is attached to the mounting bracket 78 using the screw 45. Fix it. In the corner portion, the two decorative covers 24 are joined at right angles via the corner member 84.

  In the fallen object defense net 10 after construction, when the net 26 receives the fallen object 16, an excessive impact is applied to the net 26, and the net 26 slides at a clamping position by the clamping member 30. Therefore, the impact caused by the falling object 16 is converted into energy for sliding the net 26 and efficiently absorbed. Further, when the net unit 20 is damaged by this impact or the like, it can be easily replaced on the lower side of the net unit 20.

  In addition, in the above-mentioned Example, although the support | pillar 22 is attached to the ceiling part 14a (FIG. 10) of the veranda 14 (FIG. 1), the attachment location of the support | pillar 22 can be changed suitably. Then, when it is difficult to mount the fixing member 54, as shown in FIG. 13, a columnar mounting column 58 is provided at the mounting location, and the column main body 48 is covered and fixed to the mounting column 58. May be.

A perspective view showing a building to which a falling object defense net is applied Top view showing falling object defense net Top view showing the net unit IV-IV sectional view in FIG. Perspective view showing the column Front view showing the column Sectional view taken along line VII-VII in FIG. VIII-VIII sectional view in FIG. The top view which shows the process of fixing a support | pillar to the ceiling part of a veranda Front view showing the process of fixing the column to the ceiling of the veranda The top view which shows the process of mounting a net unit on a support | pillar Sectional drawing which shows the process of fixing a net unit to a support | pillar Sectional drawing which shows the state which covered the pillar main body to the attachment pillar

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Falling object defense net 14a ... Ceiling part 16 ... Falling object 20 ... Net unit 22 ... Strut 24 ... Cosmetic cover 26 ... Net 28 ... Frame body 30 ... Holding member 34 ... Bending part 36 ... Rod-shaped member 38, 45 ... Screw 40 , 47, 49, 76, 80 ... Screw holes 42, 62, 66 ... Bolts 43, 72, 86 ... Nuts 44, 46, 60, 64, 68, 70, 74, 82 ... Holes 48 ... Column bodies 52 ... Joints 54 ... Fixing member 56 ... Projection 58 ... Mounting column 78 ... Mounting bracket 84 ... Corner member

Claims (4)

A net unit having a planar net that receives a fallen object, a frame that is disposed along the lower surface of the peripheral edge of the net and supports the net, and a rod that is disposed along the lower surface of the frame A falling object defense net comprising a strut body having a strut body, and a strut that protrudes upward from a central portion in the width direction on the upper surface of the strut body and is joined to the outer surface of the frame.   The said frame and the said junction part are formed with the hole which penetrates these, The said net unit is detachably mounted | worn with the said support | pillar with the volt | bolt penetrated by the said hole. Falling object defense net. A net unit having a planar net that receives a fallen object, a frame that is disposed along the lower surface of the peripheral edge of the net and supports the net, and a rod that is disposed along the lower surface of the frame A strut body, and a falling object defense net construction method comprising a strut having a joint provided to protrude upward in the widthwise central portion of the upper surface of the strut body,
(A) The plurality of support columns are arranged in parallel with a predetermined distance from each other so as to protrude in a substantially horizontal direction from the outer wall of the building,
(B) placing the net unit on the upper surface of the column main body in the two adjacent columns;
(C) A method for constructing a fallen object protection net, in which the joint portions of the two adjacent struts are joined to the outer surface of the frame body in the net unit.   The construction method of the fallen object defense net | network of Claim 3 which attaches a decorative cover to the side edge part of the said net unit after the said (c) process.

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