JP2022184725A - Metal fixture withe nut and scaffold - Google Patents

Abstract

To provide a metal fixture with a nut which is easy in positioning with respect to a fastening object, and favorable in the workability of fastening work.SOLUTION: A metal fixture 1 with a nut has a cylindrical fastened part 2 in which a female screw 21 is formed at least at a part of an internal peripheral face, and a holding plate 3 having a penetration hole 3a which can accommodate a part of the fastened part 2 therein. The fastened part 2 has a rotating cylinder part 22 rotatably arranged with a center line P as a center, a rotating head part 23 located at either of the rotating cylinder part 22 and the holding plate 3 in an axial line direction, and at least partially overlapped on a peripheral edge part of the penetration hole 3a of the holding plate 3 when viewing the fastened part 2 in the axial line direction, and a flange part 24 located at the other of the rotating cylinder part 22 and the holding plate 3 in the axial line direction, and at least partially overlapped on the peripheral edge part of the penetration hole 3a of the holding plate 3 in the penetration hole 3a when viewing the fastened part 2 in the axial line direction. The rotating cylinder part 22, the rotating head part 23 and the flange part 24 are integrally formed.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present invention relates to a fitting with a nut and a scaffolding.

A fitting with a nut is known in which a nut is held on the fitting. For example, Patent Literature 1 discloses a nut holder having a clip formed by bending a metal plate and a nut held by the clip. The clip of the nut holder is formed with a polygonal through hole corresponding to the shape and size of the nut. The nut moves into the polygonal through hole by tightening the bolt. As a result, in the nut holder, the nut does not incline or idle when tightening the bolt.

JP 2016-56811

By the way, in fastening the nut and the bolt, it is necessary to relatively rotate the nut and the bolt while their axes are aligned with each other. In the nut retainer of Patent Document 1, the nut can be positioned with respect to the fastening object by attaching a clip that holds the nut to the fastening object. That is, by using the nut holder, it is easy to position the nut with respect to the fastening member.

However, the nut of Patent Document 1 is fixed to the clip. Therefore, in the case of using the nut holder of Patent Document 1, it is necessary to perform fastening work by rotating the bolt with respect to the nut previously placed on the fastening object. In this case, it is necessary to align the axis of the bolt with the axis of the nut located on the opposite side of the bolt with the object to be fastened in between, resulting in poor workability in the fastening work. Therefore, there is a demand for a metal fitting with a nut that is easy to position relative to an object to be fastened and that has good fastening workability.

SUMMARY OF THE INVENTION An object of the present invention is to provide a metal fitting with a nut that is easy to position relative to an object to be fastened and has good fastening workability.

A metal fitting with a nut according to one embodiment of the present invention is a metal fitting with a nut having a female thread that is screwed onto a male thread of a bolt. The metal fitting with a nut extends along the axis and has a cylindrical fastening portion having the internal thread formed on at least a part of the inner peripheral surface thereof, and a through hole capable of accommodating a part of the fastening portion. and a plate. The fastened portion includes a rotating cylindrical portion arranged in the through hole so as to be rotatable about the axis while penetrating the through hole, and a rotating cylindrical portion extending in the axial direction with respect to the rotating cylindrical portion and the holding plate. a rotary head located on one side and at least partially overlapping the peripheral edge of the through hole in the holding plate when viewed from the axial direction of the fastened portion; a flange portion located on the other side in the axial direction and at least partially overlapping the peripheral edge portion of the through hole in the holding plate when the fastened portion is viewed in the axial direction. The rotating cylindrical portion, the rotating head portion, and the flange portion are integrally formed (first configuration).

In the above configuration, the fastening portion is held by the holding plate so as to be rotatable about the axis of the fastening portion. Therefore, the tightening operation can be performed by rotating the portion to be fastened with respect to the bolt passing through the mounting hole of the object to be fastened. In addition, in the above-described configuration, the axis of the fastened portion held by the holding plate can be easily aligned with the axis of the bolt. Therefore, it is possible to easily position the part to be fastened with respect to the bolt passing through the mounting hole of the object to be fastened. Therefore, it is possible to provide a metal fitting with a nut that is easy to work during fastening work.

In the metal fitting with a nut of the first configuration, the holding plate has a recess recessed in the thickness direction of the holding plate in the peripheral edge portion of the through hole on the other surface in the axial direction (second configuration ).

By positioning the flange portion in the recess formed in the other surface of the holding plate, it is possible to prevent the flange portion from protruding from the other surface of the holding plate. Therefore, when the fitting with a nut is placed on the object to be fastened, it is possible to prevent the flange portion of the part to be fastened from interfering with the object to be fastened.

In the metal fitting with a nut of the first or second configuration, the rotating head has a polygonal outer shape when the fastened portion is viewed in the axial direction (third configuration).

As a result, the rotating head can be easily rotated using a rotating head tightening tool or the like. Therefore, the fitting with a nut can be easily fastened to the bolt.

In the fitting with a nut having any one of the first to third configurations, the holding plate has a plurality of through holes, and the fastened portions are arranged with respect to the plurality of through holes. (Fourth configuration).

With this configuration, the plurality of fastened portions are held by the holding plate. As a result, for example, the holding plate can be arranged across a plurality of fastening objects, and a plurality of fastened portions can be fastened to a plurality of bolts penetrating the plurality of fastening objects, respectively. . Therefore, it is possible to connect a plurality of objects to be fastened by the metal fittings with nuts without overlapping them.

In the metal fitting with a nut of the fourth configuration, the holding plate has a shape elongated in one direction, and the plurality of through holes are arranged in the longitudinal direction of the holding plate (fifth configuration).

With this configuration, the holding plate can hold the plurality of fastened portions in a row. Thereby, for example, a plurality of objects to be fastened arranged in one direction can be connected in a row by means of a metal fitting with a nut.

A scaffolding according to an embodiment of the present invention includes a scaffolding board, a scaffolding board support member for supporting the scaffolding board, a bolt having a male screw, and a metal fitting with a nut having any one of the first to fifth configurations. , and the scaffolding board is fixed to the scaffolding board supporting member by the bolt and the metal fitting with the nut (sixth configuration).

Accordingly, it is possible to provide a scaffolding in which the scaffolding board is fixed to the scaffolding board support member by the metal fitting with a nut having any one of the first to fifth configurations.

In the scaffolding of the sixth configuration, the bolt is fastened to the fastened portion of the metal fitting with a nut in a state where the scaffolding plate is positioned between the metal fitting with a nut and the scaffolding plate supporting member, It is sandwiched between the metal fitting with a nut and the scaffold board support member (seventh configuration).

Accordingly, a scaffolding board having no mounting holes can be fixed to the scaffolding board supporting member by means of the fitting with a nut and the scaffolding board supporting member having any one of the first to fifth configurations. Therefore, it is possible to provide a scaffolding capable of fixing the scaffolding board to the scaffolding board support member regardless of the pitch of the mounting holes of the bolts.

In the scaffolding of the seventh configuration, the scaffolding board has a mounting hole penetrating in the thickness direction, and the bolt is fastened to the fastened portion of the metal fitting with a nut in a state of being inserted into the mounting hole. (eighth configuration).

As a result, the bolts to be fastened to the metal fittings with nuts of any one of the first to fifth configurations are inserted into the mounting holes of the scaffolding board, so that the position of the scaffolding board with respect to the scaffolding board support member is determined. Therefore, it is possible to provide a scaffold in which a plurality of scaffolding boards can be easily fixed to the scaffolding board support member.

The to-be-fastened part of the metal fitting with a nut of the present invention is rotatable around the axis of the to-be-fastened part. Thus, the tightening operation can be performed by rotating the portion to be fastened with respect to the bolt penetrating the object to be fastened. Moreover, the said to-be-fastened part is hold|maintained by the holding plate. Thereby, the to-be-fastened part can be easily positioned with respect to the bolt penetrating the fastening object. Therefore, it is possible to provide a metal fitting with a nut that is easy to work during fastening work.

FIG. 1 is a perspective view of a suspended scaffold using a metal fitting with a nut according to Embodiment 1. FIG. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a perspective view of a fitting with a nut. FIG. 4 is an exploded perspective view of a fitting with a nut showing an enlarged part of FIG. 3. FIG. FIG. 5 is an exploded perspective view of a fitting with a nut showing an enlarged part of FIG. 3. FIG. FIG. 6 is a sectional view taken along line VI-VI of FIG. 7A and 7B are diagrams illustrating a method of connecting a plurality of fastening objects using the metal fitting with a nut according to the first embodiment. FIG. FIG. 8 is a cross-sectional view of a fitting with a nut according to another embodiment. FIG. 9 is a perspective view of another suspended scaffold using the metal fitting with a nut according to Embodiment 1. FIG. 10 is a cross-sectional view taken along the line XX of FIG. 9. FIG. 11 is a cross-sectional view of another embodiment of FIG. 10. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated. Also, the dimensions of the constituent members in each drawing do not faithfully represent the actual dimensions of the constituent members, the dimensional ratios of the respective constituent members, and the like.

In the following description, the direction parallel to the central axis P of the part to be fastened 2 of the fitting 1 with a nut is the "axial direction" of the part to be fastened 2, and the direction orthogonal to the central axis P is the "diameter direction" of the part to be fastened 2. direction”. In addition, in the radial direction, a direction approaching the central axis P is referred to as "radially inward", and a direction away from the central axis P is referred to as "radial outward". Moreover, below, let the thickness direction of the plate-shaped scaffolding board 64 be an up-down direction. However, this definition of direction is not intended to limit the direction of use of the fitting 1 with a nut according to the present invention.

In addition, in the following description, expressions such as “fixed”, “connected” and “attached” (hereinafter referred to as “fixed”) are used not only when members are directly fixed to each other, but also when they are fixed via other members. It also includes cases where it is fixed. That is, in the following description, expressions such as fixing include meanings such as direct and indirect fixing between members.

(Embodiment 1)
A metal fitting 1 with a nut according to the present embodiment is a metal fitting with a nut having a female screw that is screwed onto a male screw of a bolt. The metal fitting 1 with a nut is fastened to the tip of a bolt passing through a bolt mounting hole provided in a fastening object. In the following, the configuration of the nut-equipped metal fitting 1 will be described, taking as an example the case where the fastening object is the scaffold board 64 of the suspended scaffold 60 .

First, with reference to FIG. 1, a suspended scaffolding 60, which is an example in which the metal fitting 1 with a nut according to the present embodiment is used, will be briefly described. The suspended scaffold 60 is a scaffold that is installed below the structure by being suspended from the structure using a wire or the like. FIG. 1 is a perspective view showing a part of a suspension scaffold 60 in which a metal fitting 1 with a nut is used. The suspended scaffolding 60 is used in a work environment where it is difficult to set scaffolding on the ground, such as when constructing a structure such as a bridge.

As shown in FIG. 1 , the suspended scaffolding 60 has a horizontal member 61 , a scaffolding board support member 62 , a frame member 63 , a scaffolding board 64 , and a fixing portion 65 . The horizontal member 61, the scaffolding board support member 62, the frame member 63, and the scaffolding board 64 are connected to each other via the fixing portion 65 and the metal fittings 1 with nuts according to the present embodiment. The suspended scaffolding 60 is suspended from the structure by wires (not shown) connected to the fixing portions 65 .

The horizontal member 61 is a pipe-shaped member. FIG. 1 shows a pair of horizontal members 61 extending horizontally and parallel to each other. The scaffolding board support member 62 is a member having a shape elongated in one direction. The scaffold board support member 62 extends horizontally between the pair of horizontal members 61 and in a direction perpendicular to the horizontal members 61 . The scaffolding board support member 62 is connected to the pair of horizontal members 61 at both ends in the longitudinal direction. The frame member 63 is a pipe-shaped member extending vertically. The frame member 63 is connected to the horizontal member 61 .

The fixed portions 65 are attached to the horizontal member 61 and the frame member 63 at multiple locations in the longitudinal direction. The horizontal member 61 , the scaffolding board supporting member 62 and the frame member 63 are connected to each other via the fixing portion 65 .

As shown in FIG. 2, the scaffolding board support member 62 is a member having a concave cross-sectional shape with an open bottom. A bolt through hole 62a is provided in the upper portion of the scaffolding board support member 62 so as to penetrate in the thickness direction. A bolt 70 is inserted into the bolt through-hole 62 a so that the bolt head 71 contacts the scaffolding board support member 62 and extends upward from the bolt head 71 .

The bolt 70 is fixed to the scaffolding board support member 62 in a state in which rotation of the bolt 70 about the axis and movement of the bolt 70 in the axial direction are restricted with respect to the scaffolding board support member 62 . The bolt 70 has a bolt shank 72 with a male thread 73 that engages with the female thread 21 of the fastened portion 2 of the fitting 1 with a nut.

In this embodiment, the scaffolding board support member 62 is provided with seven bolt through holes 62a. A bolt 70 is inserted into each of the seven bolt through holes 62a. Seven bolts 70 are fixed to the scaffold plank support member 62 .

As shown in FIG. 1, a scaffolding plank 64 spans two scaffolding plank support members 62 . In FIG. 1 , seven scaffolding boards 64 span two scaffolding board support members 62 . The seven scaffolding boards 64 are arranged in the longitudinal direction of the scaffolding board support member 62 without overlapping. The seven scaffolding boards 64 are connected to each other by the metal fittings 1 with nuts according to this embodiment. The scaffold board 64 constitutes the floor surface of the work area of the suspended scaffold 60 . In other words, the upper surface of the scaffolding board 64 serves as a workbench on which the worker works and a passage through which the worker moves.

As shown in FIG. 2 , the lower surface of the scaffolding board 64 is supported by the scaffolding board support member 62 . The scaffolding board 64 has a mounting hole 64a penetrating in the thickness direction at the position of the bolt 70 fixed to the scaffolding board supporting member 62 . The bolt 70 passes through the mounting hole 64a. As a result, the tip of the bolt 70 protrudes upward from the upper surface of the scaffold board 64 . The scaffolding board 64 is fixed to the scaffolding board supporting member 62 by fastening the metal fitting 1 with a nut to the bolt 70 protruding from the scaffolding board 64 .

(Composition of bracket with nut)
Next, the fitting 1 with a nut will be described. FIG. 3 is a perspective view showing the configuration of the fitting 1 with a nut. 4 and 5 are exploded perspective views of the fitting 1 with a nut showing an enlarged part of FIG. 3. FIG. FIG. 6 is a sectional view taken along line VI-VI of FIG. As shown in FIGS. 4 to 6 , the metal fitting 1 with a nut has a fastened portion 2 and a holding plate 3 .

The fastened part 2 is a cylindrical member having a fastened through-hole 2a that penetrates in the axial direction. The to-be-fastened through-hole 2a has a female thread 21 on at least a part of its inner peripheral surface. A male thread 73 of the bolt 70 is screwed into the female thread 21 .

The holding plate 3 is a metal fitting having a shape elongated in one direction. The holding plate 3 has a through hole 3a penetrating in the thickness direction. Part of the fastened portion 2 is accommodated in the through hole 3a. The holding plate 3 has a uniform thickness as a whole except for the peripheral edge of the through hole 3a. The holding plate 3 rotatably holds the fastened portion 2 .

As shown in FIG. 3, in the present embodiment, the holding plate 3 has seven through holes 3a arranged in a line at equal intervals in the longitudinal direction of the holding plate 3. As shown in FIG. The to-be-fastened part 2 is each accommodated in each of the seven through-holes 3a. That is, in this embodiment, the metal fitting 1 with a nut has seven fastened portions 2 . The configurations of the seven fastened portions 2 are the same. Therefore, below, the structure of one to-be-fastened part 2 and the holding plate 3 which hold|maintains the to-be-fastened part 2 rotatably is demonstrated in detail. Note that the number of through-holes 3a of the holding plate 3 in this embodiment is an example. The retaining plate of the fitting with a nut may have 6 or less or 8 or more through-holes.

The fastened portion 2 and the holding plate 3 will be described in detail with reference to FIGS. 4 to 6. FIG. As shown in FIGS. 4 to 6 , the fastened portion 2 has a rotating cylindrical portion 22 , a rotating head portion 23 and a flange portion 24 . The rotating cylindrical portion 22, the rotating head 23, and the flange portion 24 are integrally formed. In this embodiment, the fastening part 2 has a female thread 21 in a portion of the inner peripheral surface of the fastening through hole 2a where the rotating head 23 is located.

The rotating cylindrical portion 22 passes through the through hole 3 a of the holding plate 3 . The rotating cylindrical portion 22 is rotatable about the central axis P while passing through the through hole 3a. That is, the fastened portion 2 is rotatable about the central axis P with respect to the holding plate 3 .

The rotating head 23 is positioned on one side of the rotating cylindrical portion 22 and the holding plate 3 in the axial direction and extends radially outward of the rotating cylindrical portion 22 . In this embodiment, the rotating head 23 has a hexagonal outer shape when viewed in the axial direction. The rotating head 23 overlaps the peripheral edge of the through hole 3a of the holding plate 3 when viewed in the axial direction.

The rotating head 23 protrudes in the thickness direction of the holding plate 3 with respect to the holding plate 3 . In the thickness direction, the surface of the rotating head 23 on the projecting tip side is chamfered so that the length in the axial direction becomes shorter toward the outside in the radial direction. As a result, it is possible to prevent a worker moving on the scaffolding board 64 from stumbling over the step between the holding plate 3 and the rotating head 23 while the metal fitting 1 with the nut is arranged on the upper surface of the scaffolding board 64 . can. In order to prevent the operator from stumbling over the steps, for example, the length of the entire rotating head in the axial direction may be shortened.

The flange portion 24 is positioned on the other side of the rotating cylinder portion 22 and the holding plate 3 in the axial direction. In this embodiment, the flange portion 24 has an annular shape extending radially outward from the entire circumference of the other end portion of the rotating cylindrical portion 22 . The flange portion 24 overlaps the peripheral portion of the through hole 3a of the holding plate 3 when viewed in the axial direction.

As described above, in the metal fitting 1 with nut, the rotation head 23 of the fastened portion 2 is positioned on one side of the retaining plate 3 in the thickness direction of the through hole 3a, and the rotating head 23 of the fastened portion 2 is positioned on the other side of the thickness direction of the holding plate 3. A flange portion 24 of the fastening portion 2 is located. That is, the holding plate 3 is sandwiched between the rotary head 23 and the flange portion 24 of the fastened portion 2 at the peripheral portion of the through hole 3a. As a result, the holding plate 3 can hold the fastened portion 2 so that it does not fall out of the through hole 3 a of the holding plate 3 and the axial direction coincides with the thickness direction of the holding plate 3 .

As shown in FIGS. 5 and 6, the retaining plate 3 has a recess 3b recessed in the thickness direction on the other side of the through hole 3a on the other axial surface where the flange 24 is located. The flange portion 24 of the fastened portion 2 is accommodated in the recess 3b. That is, the holding plate 3 holds the fastened portion 2 so that the flange portion 24 does not protrude from the holding plate 3 in its thickness direction.

In this embodiment, the holding plate 3 has a plurality of through holes 3a. The plurality of through holes 3 a are located at positions corresponding to the plurality of bolts 70 protruding from the plurality of scaffolding boards 64 in a state where the holding plate 3 is arranged on the plurality of scaffolding boards 64 . Fastened portions 2 are accommodated in the plurality of through holes 3a, respectively. That is, the holding plate 3 holds a plurality of fastened portions 2 . The axial direction of the plurality of fastened portions 2 coincides with the thickness direction of the retaining plate 3 . Therefore, as shown in FIG. 7, by arranging the holding plate 3 parallel to the upper surfaces of the plurality of scaffolding plates 64, the axial direction of each fastened portion 2 is aligned with the axial direction of each bolt 70. A plurality of fastened portions 2 can be fastened to a plurality of bolts 70 in this state.

A plurality of fastened portions 2 fastened to a plurality of bolts 70 are connected by a retaining plate 3 . Therefore, the holding plate 3 can connect the plurality of scaffolding boards 64 held by the plurality of bolts 70 in the longitudinal direction of the holding plate 3 .

As described above, the metal fitting 1 with a nut according to the present embodiment includes a cylindrical fastening portion 2 extending along the axis and having a female thread 21 formed on at least a part of the inner peripheral surface, and the fastening portion 2 and a holding plate 3 having a through hole 3a capable of accommodating a part of the . The fastened portion 2 includes a rotating cylindrical portion 22 disposed in the through hole 3a so as to be rotatable about the axis while penetrating the through hole 3a, and an axial direction with respect to the rotating cylindrical portion 22 and the holding plate 3. , and when viewed in the axial direction of the fastened portion 2, the rotating head 23, which overlaps at least a part of the peripheral edge of the through hole 3a in the holding plate 3, the rotating cylindrical portion 22, and the holding plate 3 A flange portion 24 is located on the other side in the axial direction and at least partially overlaps with the peripheral edge portion of the through hole 3a in the holding plate 3 when the fastened portion 2 is viewed in the axial direction. The rotating cylindrical portion 22, the rotating head 23, and the flange portion 24 are integrally formed.

In this configuration, the fastened portion 2 is held by the holding plate 3 so as to be rotatable about the axis of the fastened portion 2 . Therefore, by rotating the fastened portion 2 with respect to the bolt 70 penetrating the mounting hole 64 a of the scaffolding board 64 , the tightening operation can be performed. Further, the axis of the fastened portion 2 held by the holding plate 3 can be easily aligned with the axis of the bolt 70 . Therefore, the fastened portion 2 can be easily positioned with respect to the bolt 70 passing through the mounting hole 64 a of the scaffolding board 64 . Therefore, it is possible to provide the metal fitting 1 with a nut that is easy to work during fastening work.

(Other embodiments)
Although the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, without being limited to the above-described embodiment, it is possible to modify the above-described embodiment as appropriate without departing from the spirit thereof.

In the above-described embodiment, the fastening part 2 has the internal thread 21 in the portion of the inner peripheral surface of the fastening through hole 2a where the rotating head 23 is located. However, the to-be-fastened part may have a female thread in any portion of the inner peripheral surface of the to-be-fastened through-hole. For example, as shown in FIG. 8, the fastening part 102 may have a female thread 121 on the entire inner peripheral surface of the fastening through-hole 102a.

In the above embodiment, the rotary head 23 is hexagonal when viewed in the axial direction. However, the rotating head may have a shape that can be directly or indirectly gripped by the operator when rotating the fastened part about the central axis P. For example, the rotating head may have a polygonal profile other than a hexagon when viewed in the axial direction. The rotating head may have a shape having a concave portion that is recessed radially inward on the outer peripheral surface. By forming the rotating head in a hexagonal shape when viewed in the axial direction, the rotating head can be easily rotated using a tightening tool such as a wrench.

In the above-described embodiment, the surface of the rotating head 23 on the projecting tip side is chamfered. However, chamfering may not be provided on the surface of the rotating head on the projecting tip side.

In the above-described embodiment, the flange portion 24 has an annular shape extending radially outward from the entire circumference of the rotating cylindrical portion 22 at the other end in the axial direction. However, the flange portion may extend radially outward from a portion of the circumferential direction at the other end portion of the rotary cylindrical portion. The flange portion may be divided in the circumferential direction when viewed in the axial direction.

In the above embodiment, the holding plate 3 has a shape elongated in one direction. However, the retaining plate may be of any shape, such as a rectangular shape, a circular shape, a polygonal shape, etc., having the same length in one direction and the other direction, as long as it can be arranged along the surface of the object to be fastened. There may be. The holding plate may have a bent shape such as an L shape or a U shape when viewed in the thickness direction.

In the above embodiment, the holding plate 3 has a plate shape extending in one direction. However, the retaining plate may have any shape as long as it conforms to the surface of the object to be fastened, and may have, for example, a shape curved in the thickness direction.

In the above embodiment, the holding plate 3 has a uniform thickness throughout. However, the retainer plate may have portions of different thickness.

In the above-described embodiment, the holding plate 3 has the concave portion 3b recessed in the thickness direction on the peripheral edge portion of the through hole 3a on the other surface. However, the holding plate may not have the recess on the other surface.

In the above embodiment, the holding plate 3 has a plurality of through holes 3a. However, the retaining plate may have one through hole.

In the above embodiment, the plurality of through holes 3a of the holding plate 3 are arranged in a row in the longitudinal direction of the holding plate 3. As shown in FIG. However, the through holes do not have to be aligned.

In the above-described embodiment, the portions to be fastened are arranged in the plurality of through holes 3a of the holding plate 3, respectively. However, some of the plurality of through-holes of the holding plate may not be provided with the fastened portions.

In the above embodiment, the fastened portion 2 of the metal fitting 1 with nut is positioned with respect to the bolt 70 fixed to the scaffolding board support member 62 . However, the fastened portion may be positioned relative to a bolt that is not fixed to the scaffolding plank support member.

In the above embodiment, the plurality of fastened portions 2 of the metal fitting 1 with a nut are positioned with respect to the plurality of bolts 70 fixed to the scaffolding board support member 62 . However, a plurality of fastened portions may be positioned with respect to a plurality of bolts fixed to different members.

In the above-described embodiment, the suspension scaffolding 60 is described as an object for which the metal fittings 1 with nuts are used. That is, the metal fittings with nuts may be used when fixing members other than scaffolding boards. The fitting with a nut may fix a plate-shaped member, or may fix a member having another shape.

In the above-described embodiment, an example has been described in which the metal fitting 1 with a nut has a plurality of to-be-fastened portions 2, and a plurality of objects to be fastened are connected using a plurality of to-be-fastened portions. However, the metal fitting with a nut may have one to-be-fastened part, and a plurality of objects to be fastened may be connected in the thickness direction using one to-be-fastened part.

In the above embodiment, the scaffolding board 64 of the suspended scaffolding 60 is fixed by the bolt 70 inserted into the mounting hole 64a of the scaffolding board 64 and the metal fitting 1 with nut. However, as shown in FIG. 9, the scaffolding board does not have to have mounting holes through which bolts for fixing to the scaffolding board support member 62 pass. FIG. 9 is a perspective view showing a schematic configuration of a suspended scaffolding 200, which is another embodiment of the suspended scaffolding 60. FIG. FIG. 10 is a cross-sectional view showing a cross section taken along line XX of FIG.

As shown in FIGS. 9 and 10 , the suspended scaffolding 200 includes scaffolding plate supporting members 210 and scaffolding plates 220 instead of the scaffolding plate supporting members 62 and 64 of the suspended scaffolding 60 .

The scaffolding board support member 210 is a member that supports the scaffolding board 220 . The scaffolding board support member 210 is a member having a shape elongated in one direction. The scaffolding board support member 210 has a support portion 211 and a contact portion 212 . Each of the support portion 211 and the contact portion 212 has a shape elongated in one direction. The contact portion 212 is fixed on the support portion 211 .

The support part 211 has the same configuration as the scaffold board support member 62 in the suspended scaffold 60 . The support portion 211 is a concave member having an opening when viewed in the longitudinal direction. The support portion 211 is arranged such that the opening opens downward. An upper portion of the support portion 211 facing the opening has a fixing surface to which the contact portion 212 is fixed. The support portion 211 has a support portion bolt through-hole 211a passing through the upper portion in the thickness direction. A bolt 70 is inserted upward from below the upper portion of the support portion 211 into the support portion bolt through hole 211a. A bolt head 71 of the bolt 70 is fixed to the upper portion of the support portion 211 by welding or the like. That is, the bolt 70 is fixed to the support portion 211 with the bolt shaft portion 72 protruding upward from the fixing surface of the support portion 211 .

As shown in FIG. 10 , the contact portion 212 is a member extending in the longitudinal direction (one direction) of the support portion 211 . The contact portion 212 is fixed to the fixing surface of the support portion 211 by welding or the like along the support portion 211 .

The contact portion 212 is a member having a hat-shaped cross-section with a substantially central portion protruding upward when viewed in the longitudinal direction. The contact portion 212 has a mounting surface 212d, a pair of regulation surfaces 212a, and an upper end surface 212c. 212 d of mounting surfaces, a pair of control surface 212a, and the upper end surface 212c are integrally formed.

The mounting surface 212 d extends in the longitudinal direction of the support portion 211 along the fixed surface of the support portion 211 . The mounting surface 212 d is in contact with the fixed surface of the support portion 211 . The long-side ends of the mounting surface 212 d protrude outward from the long-side ends of the support portion 211 . The pair of regulating surfaces 212a are rectangular members each extending upward along the longitudinal direction from the mounting surface 212d. The upper end surface 212c is a rectangular member that connects the upper ends of the pair of regulation surfaces 212a. The upper end surface 212c has a contact portion bolt through hole 212b so as to overlap with the support portion bolt through hole 211a when viewed in the vertical direction. A bolt shaft portion 72 protruding upward from the fixing surface of the support portion 211 is inserted into the contact portion bolt through hole 212b. A bolt shaft portion 72 is positioned between the pair of restricting surfaces 212a. A tip portion of the bolt shaft portion 72 protrudes upward from the upper end surface 212c.

The configuration of the scaffolding board 220 differs from the configuration of the scaffolding board 64 in the suspended scaffolding 60 of the above embodiment in that it does not have mounting holes. The scaffolding board 220 is arranged to extend in a direction intersecting with the longitudinal direction of the two scaffolding board support members 210 in plan view. The scaffolding board 220 is supported by the scaffolding board support members 210 at both ends in the longitudinal direction. That is, the scaffolding board 220 spans over the two scaffolding board support members 210 . The end of the scaffolding board 220 is mounted on the mounting surface 212 d of the contact portion 212 of the scaffolding board support member 210 . The scaffolding board 220 is located between the regulating surfaces 212a of the contact portions 212 of the two scaffolding board support members 210 respectively. Therefore, the scaffolding board 220 is restricted in its longitudinal position with respect to the scaffolding support members 210 by the restriction surfaces 212 a of the two scaffolding support members 210 .

The height of the scaffolding board 220 placed on the mounting surface 212d of the contact portion 212 in the thickness direction is greater than the height of the regulation surface 212a of the contact portion 212, and the position of the upper surface of the scaffolding board 220 in the thickness direction is It is lower than the tip of the bolt shaft portion 72 of the bolt 70 . That is, the tip portion of the bolt shaft portion 72 protrudes upward from the upper surface of the scaffolding board 220 . As a result, the scaffolding board 220 is positioned between the mounting surface 212 d of the scaffolding board support member 210 and the metal fitting 1 with a nut fastened to the bolt shaft portion 72 of the bolt 70 . Further, the scaffolding board 220 is sandwiched between the metal fitting 1 with a nut and the mounting surface 212d of the scaffolding board support member 210 by fastening the bolt shaft portion 72 of the bolt 70 to the metal fitting 1 with a nut. The scaffolding board 220 sandwiched between the metal fitting 1 with the nut and the mounting surface 212d of the scaffolding board support member 210 has a height in the thickness direction equal to the height of the contact portion 212 due to the fastening force of the bolt 70 to the metal fitting with the nut 1. Elastic deformation occurs until As a result, the scaffolding board 220 is fixed to the scaffolding board support member 210 by the fastening force of the bolt 70 to the fitting 1 with a nut.

In addition, in the suspended scaffold 200 , the bolts 70 are fixed to the scaffold board support members 210 . However, the bolts 70 do not have to be fixed to the scaffolding plank support member 210 . For example, in the hanging scaffolding 200, when the scaffolding plate support member 210 is configured only by the contact portion 212, the bolt 70 is inserted upward from the bottom of the contact portion bolt through-hole 212b, and the bolt head 71 may be fixed to the contact portion bolt through hole 212b.

Moreover, in the example shown in FIG. 10 , the contact portion 212 is fixed to the support portion 211 . However, the contact portion 212 and the support portion 211 may be integrally formed. For example, the support portion 211 may be formed to have a hat-shaped cross section in which the substantially central portion protrudes upward when viewed in the longitudinal direction.

Further, in the example shown in FIG. 10 , the scaffolding board support member 210 has a contact portion 212 . However, the scaffolding plank support member 210 may not have the contact portion 212 . The scaffolding board 220 may be fixed to the scaffolding board support member 210 by being sandwiched between the metal fitting 1 with the nut and the support portion 211 of the scaffolding board support member 210 .

In the example shown in FIG. 10, a scaffolding board 220 that does not have a mounting hole through which a bolt penetrates is sandwiched between the contact portion 212 of the scaffolding board support member 210 and the fitting 1 with a nut and fixed to the scaffolding board support member 210. It is However, the scaffolding board is fixed to the scaffolding board supporting member composed of the contact part and the supporting part by inserting the bolt through the scaffolding board having the mounting hole through which the bolt penetrates and fastening the fitting 1 with the nut. You may

FIG. 11 is a cross-sectional view of the scaffolding board supporting portion when the scaffolding board 220 having the mounting holes 220a is fixed to the scaffolding board supporting member 210 in the example shown in FIG. As shown in FIG. 11, the support portion 211 has a support portion bolt through-hole 211b through which the bolt 70 penetrates, in a portion overlapping the mounting surface 212d in plan view. Further, the contact portion 212 has a contact portion bolt through-hole 212e through which the bolt 70 penetrates in a portion overlapping with the support portion bolt through-hole 211b in plan view. A bolt 70 is inserted upward from below into the support portion bolt through hole 211b and the contact portion bolt through hole 212e. A bolt head 71 is fixed to the support portion 211 .

The scaffolding board 220 has mounting holes 220a through which bolts pass at the ends in the longitudinal direction. A bolt shaft portion 72 protruding from the contact portion bolt through hole 212e is inserted into the mounting hole 220a of the scaffolding plate 220 . The scaffolding board 220 is fixed to the scaffolding board supporting member 210 by fastening the bolt shaft portion 72 of the bolt 70 to the metal fitting 1 with a nut.

INDUSTRIAL APPLICABILITY The present invention can be used for metal fittings with nuts fastened to bolts.

1 Metal fittings with nuts 2, 102 Fastened parts 2a, 102a Fastened through-hole 3 Holding plate 3a Through-hole 3b Recesses 21, 121 Female screw 22 Rotating cylindrical part 23 Rotating head 24 Flange part 60, 200 Hanging scaffolding 61 Horizontal member 62, 210 scaffolding plate support member 62a bolt through hole 63 frame member 64, 220 scaffolding plate 64a, 220a mounting hole 65 fixing portion 70 bolt 71 bolt head 72 bolt shaft portion 73 male screw 211 support portion 211a, 211b support portion bolt through hole 212 contact Part 212a Regulating surfaces 212b, 212e Contact part bolt through hole 212c Upper end surface 212d Mounting surface P Central axis

Claims (8)

A metal fitting with a nut having a female thread to be screwed to the male thread of a bolt,
a cylindrical fastened portion extending along the axis and having the internal thread formed on at least a portion of the inner peripheral surface;
a retaining plate having a through-hole capable of accommodating a portion of the fastened portion;
has
The fastened portion is
a rotating cylindrical portion arranged in the through hole so as to be rotatable about the axis while passing through the through hole;
A rotating head positioned on one side in the axial direction with respect to the rotating cylindrical portion and the holding plate, and at least partially overlapping a peripheral edge portion of the through hole in the holding plate when the fastened portion is viewed in the axial direction. Department and
A flange portion located on the other side in the axial direction with respect to the rotating cylindrical portion and the holding plate and at least partially overlapping a peripheral edge portion of the through hole in the holding plate when the fastened portion is viewed in the axial direction. When,
has
The rotating cylindrical portion, the rotating head and the flange portion are integrally formed,
Hardware with nut. In the metal fitting with a nut according to claim 1,
The retaining plate has a recess recessed in the thickness direction of the retaining plate on the peripheral edge of the through hole on the other surface in the axial direction. In the metal fitting with a nut according to claim 1 or claim 2,
The rotating head has a polygonal outer shape when the fastened portion is viewed in the axial direction,
Hardware with nut. In the fitting with a nut according to any one of claims 1 to 3,
The holding plate has a plurality of through holes,
A metal fitting with a nut, wherein the to-be-fastened portions are arranged with respect to the plurality of through-holes, respectively. In the metal fitting with a nut according to claim 4,
The holding plate is
It has a long shape in one direction,
A metal fitting with a nut, wherein the plurality of through holes are arranged in the longitudinal direction of the holding plate. a scaffold plank;
a scaffolding board support member for supporting the scaffolding board;
a bolt having an external thread;
and a fitting with a nut according to any one of claims 1 to 5,
The scaffolding, wherein the scaffolding board is fixed to the scaffolding board support member by the bolt and the metal fitting with the nut. A scaffold according to claim 6, wherein
The scaffold planks are
When the bolt is fastened to the fastened portion of the nut-equipped metal fitting while positioned between the nut-equipped metal fitting and the scaffolding board support member, the bolt is sandwiched between the nut-equipped metal fitting and the scaffolding board support member. ,scaffold. A scaffold according to claim 7, wherein
The scaffold planks are
It has a mounting hole that penetrates in the thickness direction,
The scaffolding, wherein the bolt is fastened to the fastened portion of the fitting with a nut in a state of being inserted into the mounting hole.

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