JP2002227420A - Safety-net mounting metallic material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety-net mounting metallic material capable of preventing the waste of resources, capable of surely installing a metal-fitting engaging section for mounting a safety net so as to obtain sufficient strength at a proper place and capable of reducing the labor, cost or the like of material control. SOLUTION: In the safety-net mounting metallic material 1A, the metal-fitting engaging section 14 for mounting the safety net is secured to a joint metal 10 for building used for mutually joining woody structural materials 2 and 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety net fitting used for mounting a safety net at a predetermined position of a wooden building under construction.

[0002]

2. Description of the Related Art
At building sites such as houses, to prevent workers from being injured due to the fall of building materials and tools or the workers themselves, to catch falling objects at the predetermined position of the building under construction A safety net has been established. For example, in a steel-framed building, it is possible to form a bracket insertion hole in a steel frame, hook a safety net suspension bracket such as a carabiner in the bracket insertion hole, and suspend the safety net via the suspension bracket. Is being done. In the case of wooden buildings (traditional framed construction, wooden houses such as two-by-four, etc.), it is difficult to form a bracket insertion hole for a safety net hanging bracket in the wooden structural material itself. To
2. Description of the Related Art It has been practiced to fix a dedicated metal member having a metal fitting insertion hole and suspend a safety net through the metal member. For example, Japanese Unexamined Patent Application Publication No. 10-18607 proposes a hardware having a configuration in which a fixing surface for a beam and a locking surface formed with a bracket insertion hole are connected in an L-shaped cross section. However, conventionally,
The mounting hardware for mounting the safety net used for wooden buildings is generally left in the completed building without being removed, even though the use time of the safety net is limited to one time during construction work It was a target. Although such a use method wastes resources, there is a problem that it takes time and effort to remove the firmly fixed mounting hardware. In addition, the mounting hardware for mounting the safety net must be firmly mounted in case of heavy loads, but conventional ones have insufficient fixing strength or are fixed in inappropriate positions. Therefore, there is a possibility that a desired effect cannot be obtained.

Accordingly, an object of the present invention is to prevent waste of resources, and to reliably provide a fitting portion for attaching a safety net to an appropriate position so as to obtain sufficient strength. An object of the present invention is to provide a safety net mounting hardware and a safety net mounting structure capable of reducing management labor and costs.

[0004]

According to the present invention, there is provided a safety net mounting hardware, wherein a metal fitting for locking a safety net is provided on a building metal fitting used for joining wooden structural members. By providing the above, the above object has been achieved.

[0005] The present invention relates to a method for connecting wooden structural members using a feather plate bolt or a strip metal having a fixing plate fixed to the side surface of the wooden structural member and a bolt insertion portion or a bolt connected to the fixing plate. A safety net mounting structure provided with a safety net mounting bracket engaging portion in the vicinity of the joined portion where the feather plate bolt or the strip metal is attached to one side surface of one of the wooden structural members. A safety net mounting structure wherein the wooden structure is fixed by a bolt penetrating therethrough, and the tip of the bolt is fixed on the other side surface of the wooden structure by a washer and a nut having the metal fitting locking portion. The above-mentioned object has been achieved by providing.

According to the present invention, the wooden structural members are joined to each other by using a feather board bolt having a fixing plate fixed to the side surface of the wooden structural member and a bolt insertion portion or a bolt connected to the fixing plate. A safety net mounting structure provided with a safety net mounting bracket locking portion near a joint of the wooden structural material, wherein the fixing plate portion is fixed to a side surface of one of the wooden structural materials, and The bolt or the bolt portion inserted into the bolt insertion portion is inserted into a through hole provided in the other wooden structure member, and the tip of the bolt or the bolt portion is connected to one of the wooden members of the other wooden structural member. The object has been achieved by providing a safety net mounting structure characterized by being fixed by a washer and a nut having the metal fitting locking portion on a side surface opposite to a side surface with which a structural material abuts. is there.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. The safety net mounting hardware 1A according to the first embodiment includes a safety plate mounting member 11 fixed to the side surface of the wooden structural member 2 and a feather plate bolt 10 having a bolt insertion portion 12 provided continuously with the fixing plate portion 11, and It is provided with a bracket 14 for attaching a net. The fixed plate portion 11
A bolt hole 13 is formed in the vicinity of the central portion in the longitudinal direction, and is formed of a strip-shaped metal plate, for fixing the fixed plate portion 11 to the wooden structural member 2. The bolt insertion portion 12 is integrally connected to a front portion of the fixed plate portion 11, and is formed by processing a metal plate into a substantially cylindrical shape. Such a configuration is the same as that of the conventional bolt-type body plate bolt except that the metal fitting locking portion 14 is provided.

The metal fitting locking portion 14 is provided in the longitudinal direction of the fixing plate portion 11 in the vicinity of the rear end portion 11a located on the side opposite to the bolt insertion portion 12 with respect to the position where the bolt hole 13 is formed. If the metal latch 14 is formed in the vicinity of the rear end of the fixed plate 11, the strength of the metal plate 14 may be reduced due to the formation of the metal latch 14, or the fixed plate 11 may be deformed due to the suspension of the safety net. Occurs, the joining function of the wing plate bolts 10, that is, the wooden structural material 2 to which the wing plate bolts 10 are fixed.
Can be reduced to adversely affect the function of joining to the other wooden structural material 3.

The metal fitting locking portion 14 is formed by deforming a part of a metal plate constituting the fixed plate portion 11. More specifically, a slit 15 is formed in the width direction of the fixed plate part 11 in the metal plate constituting the fixed plate part 11, and a part of the metal plate adjacent to the slit 15 is formed on one side of the metal plate. It is formed so as to protrude to the side (the surface side not in contact with the wooden structural material 2). When the metal fitting locking portion 14 is formed in this way, it is possible to avoid or minimize the increase in the material caused by forming the metal fitting locking portion 14.

[0010] In the first embodiment, the metal fitting locking portion 14
It has a metal fitting insertion hole 14a through which a part of the safety net hanging metal fitting 6 such as a carabiner can be inserted. As shown in FIG. 2, a part of the safety net hanging metal fitting 6 is inserted through the metal fitting insertion hole 14a. Can be held. The safety net hanging bracket 6 shown in FIGS. 2 and 3 has an annular shape,
A part of the ring can be opened and closed by the rotation operation of. In the present invention, the metal fitting locking portion is provided with a metal fitting insertion hole 14a.
The hook is not limited to the one having a hook. The hook has a hook capable of hooking the safety net hanging bracket 6, a screw having a female thread or a male thread provided on the safety net hanging bracket 6, and the like. Is also good.

The hanging bracket 6 is inserted into the bracket insertion hole 14a.
It is preferable that the metal fitting insertion hole 14a has a size that allows insertion of a rod having a diameter of at least 6 mm from the viewpoint of improving the mounting property of the bracket. In addition, the metal fitting locking portion 14 has a height H
Is preferably 7 to 10 mm and the width W is 4 to 8 mm. In the figure, reference numeral 8 denotes a screw or nail hole.

Next, an example of a method of attaching a safety net to a wooden building under construction using the safety net attaching hardware 1A of the first embodiment will be described with reference to FIGS. First, as shown in FIG. 2, the safety net mounting hardware 1A is attached to the side surface 21 of one of the pair of wooden structural members 2 and 3 by the bolt 4 having the wooden structural member 2 penetrated. Fix it. The tip portion 41 of the bolt 4 may be fixed on the other side surface 22 side of the wooden structural member 2 using a normal washer and a nut, but in the example shown in FIG.
It is fixed by a washer 42 having a metal net locking portion 44 for attaching a safety net and a nut 43.

Further, the bolt 5 is inserted through the bolt insertion portion 12, and is inserted through a through hole provided in the other wooden structure 3, and the tip 51 of the bolt 5 is brought into contact with one side of the wooden structure 2. It is fixed on the side surface 32 opposite to the side 31. The distal end portion 51 of the bolt 5 may be fixed using a normal washer and a nut, but in the example shown in FIG. 2, a washer 52 and a nut 53 having a fitting locking portion 54 for attaching a safety net are provided. It is fixed. Incidentally, FIG.
5, washers 42, 52 used for fixing the distal end portions 41, 51 are shown.
4 is a metal fitting locking portion 14 in the safety net mounting hardware 1A.
It has the same configuration as As shown in FIG. 2, the both washers 42 and 52 may be fixed so that the bolt holes 45 and 55 and the metal fitting locking portions 44 and 54 are arranged side by side, however, the rotation of the washers 42 and 52 is prevented. From the viewpoint of
It is preferable to fix the bracket vertically so that the metal fittings 44 and 54 are located below the brackets 5 and 55.

[0014] Safety net mounting hardware 1A of the first embodiment
In this way, the pair of wooden structural members 2 and 3 can be joined to each other by using them in the same manner as a normal feather board bolt. And at the same time, the metal net locking members 14 for attaching the safety net can be provided in the vicinity of the joint between the wooden structural members 2 and 3. As shown in FIGS. 2 and 3, the attachment of the safety net 7 to the
The safety net hanging metal fitting 6 such as a carabiner is inserted into the metal fitting insertion hole to be locked, and the safety net 7 is engaged with the safety net hanging metal fitting 6 locked by the metal fitting locking portion 14. still,
The safety net hanging bracket 6 may be provided integrally with the safety net 7, and the material of the safety net hanging bracket 6 may be any material as long as the same strength as the metal bracket can be obtained. For example, another material such as FRP may be used.

According to the metal fitting 1A for the safety net according to the first embodiment, the metal fittings 14 for mounting the safety net are provided just by joining the wooden structural members together with the ordinary blade bolts. Can be. Therefore, the work time and labor involved in attaching the safety net can be significantly reduced.

Further, since the metal fitting 1A is securely fixed at an appropriate position without fail, the fixing strength of the metal 1A becomes insufficient, so that if a heavy object falls onto the safety net, the metal fitting 1A is not secured. It is possible to prevent inconveniences such as the hardware being detached, being fixed at an inappropriate position, and a gap being formed outside the safety net 7.

Furthermore, since it has both a function as a metal fitting for construction and a function as a metal fitting for a safety net, it is possible to prevent waste of resources by omitting a dedicated metal fitting.
It is also possible to reduce labor and cost of material management.

In the safety net mounting structure shown in FIG. 2, the tip 41 of the bolt 4 is fixed by the washer 42 and the nut 43 having the locking portion 44 for fitting the safety net. Even if the metal hardware fixed to the side surface is the safety net mounting metal hardware 1A provided with the metal fitting locking portion 14, or the normal blade plate bolt not provided with such metal fitting locking portion, In the vicinity of the joint between the timber structural members 2 and 3, a fitting locking portion 44 for attaching a safety net can be provided. Therefore, the safety net mounting hardware 1
A has the same function and effect as the case where the metal fitting locking portion 44 is provided.

In the safety net mounting structure shown in FIG. 2, the tip 51 of the bolt 5 is fixed by the washer 52 and the nut 53 having the metal net locking portion 54 for mounting the safety net. Even if the metal hardware fixed to the side surface is the safety net mounting metal hardware 1A provided with the metal fitting locking portion 14, or the normal blade plate bolt not provided with such metal fitting locking portion, In the vicinity of the joint between the wooden structural members 2 and 3, a metal latch 54 for attaching a safety net can be provided. Therefore, the safety net mounting hardware 1
A has the same function and effect as the case where the metal fitting locking portion 44 is provided.

FIG. 4 is a view showing a safety net mounting hardware 1B according to a second embodiment of the present invention. As shown in FIG. 4, the safety net mounting hardware 1B of the second embodiment is fixed so as to extend from the side surface 21 of one of the wooden structural members 2 to the side surface 33 of the other wooden structural member 3. A metal strip 16 for joining two or three pieces by abutting their end faces to each other is provided with metal locking parts 17 and 18 for attaching a safety net. The strip hardware 16 is formed of a single strip-shaped metal plate, and has bolt holes 13, 13 for fixing to the side surfaces of the wooden structural members 2, 3 at positions near both ends in the longitudinal direction. . Such a configuration is the same as the conventional strip hardware except that the metal fittings 17 and 18 are provided.

The metal fittings 17 and 18 are provided near both longitudinal ends of the strip 16. Bracket locking part 1
If the metal members 7 and 18 are formed in the vicinity of both ends or one end in the longitudinal direction, the metal strips 16 may be temporarily reduced due to a decrease in strength due to the formation of the metal fittings 17 or 18 or the suspension of the safety net.
Even if the deformation of the strip metal 16 occurs,
That is, the possibility of adversely affecting the function of joining or reinforcing the wooden structural members 2 and 3 so that the wooden structural members 2 and 3 are not separated can be reduced.

The metal fittings 17 and 18 are formed in the same manner as the metal fittings 14 of the safety net mounting hardware 1A of the first embodiment. An increase in material accompanying formation can be avoided or minimized.

The safety net mounting hardware 1B of the second embodiment
As shown in FIG. 4, a pair of wooden structural members 2 and 3 can be joined to each other by using the same as a normal strip metal. At the same time, near the joint between the wooden structural members 2 and 3, fittings 17 and 18 for attaching the safety net are provided.
Can be provided. Therefore, according to the safety net mounting hardware 1B of the second embodiment, the same operation and effects as those of the safety net mounting hardware 1A of the first embodiment are exerted.

The tip 41 of each of the bolts 4 and 4 for fixing the safety net mounting hardware 1B to one side 21 and 33 of each of the wooden structural members 2 and 3 is provided on the other side of each of the wooden structural members 2 and 3. On the side, it can be fixed by various known methods, but if the tip of both or one of the bolts 4 is fixed with the washer 42 and the nut 43 shown in FIG. 1 or FIG. However, even if it is a normal feather board bolt which does not have a fitting locking portion, a fitting locking portion for attaching a safety net can be provided in the vicinity of a joint between the wooden structural members 2 and 3. When the safety net mounting hardware 1B is used, on both sides of the wooden structural members 2 and 3,
A fitting locking portion for attaching the safety net can be provided.

The present invention can be variously modified without being limited to the above embodiment. For example, as shown in FIG. 5, an architectural metal joint provided with a metal net fixing portion 44 for attaching a safety net is a bolt-integrated blade plate bolt 10A in which the fixed plate portion 11 and the bolt portion 5A cannot be separated. May be. In addition, when the metal fitting is formed by projecting a part of the metal plate adjacent to the slit to one side of the metal plate, FIG.
As shown in FIG. 4, a pair of slits may be formed to project between the two slits, or as shown in the right diagrams of FIGS. 4 and 6, the slit may project between the edges of the metal plate. Also,
As shown in the left diagram of FIG. 6, the metal fitting locking portion 14 may be provided at a portion other than the fixing plate portion 11 of the blade bolt. In addition, examples of the joint metal fittings for building used for joining the wooden structural materials include, in addition to the feather plate bolt and the strip metal piece, a nailed strip metal piece (opening metal piece), a metal fold metal piece, a steel fired metal, a beam receiving metal piece, and the like. .

[0026]

According to the safety net mounting hardware or the safety net mounting structure of the present invention, it is possible to prevent waste of resources, and to obtain a sufficient strength of the locking portion for mounting the safety net at an appropriate position. And the labor and cost of material management can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a safety net mounting metal according to the present invention as a washer having a similar metal fitting locking portion.

FIG. 2 is a bird's-eye view showing an example of a use state of the safety net mounting hardware of FIG. 1 and a safety net mounting structure using the safety net mounting hardware.

FIG. 3 is a perspective view showing a state in which a safety net hanging bracket is locked to the safety net mounting hardware of FIG. 1 and the safety net is mounted.

FIG. 4 is a perspective view showing a second embodiment of the safety net mounting hardware of the present invention.

FIG. 5 is a perspective view showing another embodiment of the safety net mounting hardware of the present invention.

FIG. 6 is a perspective view of an essential part showing still another embodiment of the safety net mounting hardware of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1A Safety net mounting hardware 10 Feather plate bolt (joint metal for construction) 11 Fixing plate portion 12 Bolt insertion portion 13 Bolt hole 14 Locking portion for mounting metal for safety net 15 Slit 1B Safety net mounting hardware 16 Strip hardware (Joint metal for construction) ) 17, 18 Locking parts for attaching safety nets 20 Entrance of stairs 2, 3 Wood structural materials 4, 5 bolts 6 Safety nets 7 Safety net hanging brackets

Claims (8)

[Claims] 1. A safety net fitting, wherein a metal fitting for securing a safety net is provided on a metal joint for construction used for joining wooden structural members. 2. The joint metal fitting for building is a feather board bolt having a fixed plate portion fixed to a side surface of a wooden structural material and a bolt insertion portion or a bolt portion connected to the fixed plate portion. The described safety net mounting hardware. 3. A bolt hole for fixing to the side surface of the wooden structural member is formed in the fixing plate portion, and the metal fitting locking portion is configured to insert the bolt into a position where the bolt hole is formed. The safety net attachment according to claim 2, wherein the metal fitting is provided near a rear end located on a side opposite to the part or the bolt part. 4. The metal joint for building is fixed so as to extend from a side surface of one of the wooden structural members to a side surface of the other wooden structural member, and is a strip metal member for joining both wooden structural members by bringing their end surfaces into contact with each other. The metal fitting locking portion is provided near at least one end in the longitudinal direction of the strip metal.
The described safety net mounting hardware. 5. The metal fitting locking portion forms a slit in the metal plate forming the fixing plate portion or the strip metal, and a part of the metal plate adjacent to the slit is formed on one side of the metal plate. 5. The metal fitting for mounting a safety net according to claim 3, wherein the metal fitting is formed so as to protrude therefrom. 6. The wooden structural members are joined to each other by using a wing plate bolt or a strip having a fixing plate fixed to the side surface of the wooden structural member and a bolt insertion portion or a bolt connected to the fixing plate. A safety net mounting structure provided with a safety net mounting bracket locking portion in the vicinity of the joined portion, wherein the feather plate bolt or the strip metal is attached to one side surface of one of the wood structural materials, A safety net mounting structure, wherein the bolt is penetrated by a material, and the tip of the bolt is fixed on the other side of the wooden structural material by a washer and a nut having the metal fitting locking portion. 7. A wooden structure in which wooden structural materials are joined to each other using a feather board bolt having a fixing plate fixed to the side surface of the wooden structural material and a bolt insertion portion or a bolt connected to the fixing plate. A safety net mounting structure provided with a safety net mounting bracket locking portion near a joint portion of the wood, wherein the fixing plate portion is fixed to a side surface of one of the wood structural materials, and the bolt insertion is performed. The bolt or the bolt portion inserted through the portion is inserted into a through hole provided in the other wooden structure material, and the tip of the bolt or the bolt portion is connected to one of the wooden structure materials in the other wooden structure material. A safety net mounting structure, wherein a side surface opposite to a side surface with which the abutment is fixed by a washer and a nut having the metal fitting locking portion. 8. The safety net mounting structure according to claim 6, wherein the safety net mounting hardware according to claim 2 is used as the blade plate bolt or the strip hardware.