JP7628455B2 - Fastening hardware - Google Patents

Description

The present invention relates to fastening fittings.

Structures are constructed by connecting corrugated steel plates such as liner plates and corrugated steel plates together. For example, multiple liner plates are connected together to be used as retaining walls when constructing caisson piles, drainage wells, underwater cofferdams, bridge piers, etc. For example, multiple corrugated steel plates are connected together to be used as waterways.

Conventionally, the techniques disclosed in Patent Documents 1 and 2 have been proposed for connecting liner plates together.

The liner plate fastening fitting disclosed in Patent Document 1 is characterized by having an insertion portion that is inserted into the holes of the flanges of the upper and lower liner plates that are in contact, and a clamping portion that clamps the two flanges that are in contact.

The temporary fastener for liner plates disclosed in Patent Document 2 consists of an insertion part that is inserted into the holes of both flanges of the upper and lower liner plates that are in contact with each other, a clamping part with slits spaced apart so that the two flanges can be inserted, and a connecting part that connects the insertion part and the clamping part, and is characterized by being bent in an "U" shape from the connecting part to the clamping part.

Japanese Utility Model Application Publication No. 3-69093 Japanese Utility Model Application Publication No. 2-125095

However, with the techniques disclosed in Patent Documents 1 and 2, when clamping the flanges in the clamping section or removing them from the liner plate, it is necessary to strike them with a special tool or striking means such as a hammer. This creates the problem of noise being generated. Also, with the techniques disclosed in Patent Documents 1 and 2, the flanges are simply clamped together and fixed, so there is the problem that the force fixing the flanges together is relatively weak.

The present invention was conceived in consideration of the above-mentioned problems, and its purpose is to provide a fastening fitting that can reduce noise during construction and ensure sufficient fastening force.

The fastening fitting of the present invention is a fastening fitting for connecting a first plate-shaped member having a first through hole formed therein and a second plate-shaped member having a second through hole formed therein, and comprises a bolt that can be inserted into the first through hole and the second through hole, a nut that is screwed onto the shank of the bolt, and a rod-shaped member that is provided on the head of the bolt and extends in a direction intersecting the axis of the bolt, wherein the head of the bolt is formed in a hexagonal prism shape and further comprises a base that is provided on the upper surface of the head of the bolt and is made of a steel plate, wherein the base has a rectangular through hole formed therein through which the rod-shaped member is inserted, and the portion of the rod-shaped member that is inserted into the through hole is formed in a rectangular cross section, and the rod-shaped member is inserted into the through hole so as to be slidable only horizontally .

The fastening fitting of the present invention is a fastening fitting for connecting a first plate-shaped member having a first through hole formed therein and a second plate-shaped member having a second through hole formed therein, and comprises a bolt that can be inserted into the first through hole and the second through hole, and a nut that is screwed onto the bolt, wherein the head of the bolt is formed in a hexagonal prism shape and further comprises a base that is provided on the upper surface of the head of the bolt and is made of a steel plate, and the base has a through hole formed therein.

The present invention makes it possible to reduce noise during construction and ensure sufficient fastening strength.

FIG. 1 is a perspective view showing a liner plate using fastening fittings according to a first embodiment. FIG. 2 is a perspective view showing the fastening fitting according to the first embodiment. FIG. 3 is a front view showing the fastening fitting according to the first embodiment. Figure 4 is a diagram explaining a method of fastening a liner plate using a fastening fitting in the first embodiment, where Figure 4(a) is a front view showing the state in which the shaft portion is inserted into the first through hole and the second through hole, and Figure 4(b) is a front view showing the state in which the rod-shaped member is rotated around the axis of the bolt. FIG. 5(a) is a perspective view showing a first modified example of the fastening fitting according to the first embodiment, and FIG. 5(b) is a perspective view showing a second modified example of the fastening fitting according to the first embodiment. FIG. 6 is a perspective view showing a liner plate using fastening fittings according to the second embodiment. FIG. 7 is a perspective view showing a fastening fitting according to the second embodiment. Figure 8 is a diagram explaining a method of fastening a liner plate using a fastening fitting according to the second embodiment, where Figure 8(a) is a front view showing the state in which the shaft portion is inserted into the first through hole and the second through hole, and Figure 8(b) is a front view showing the state in which the rod-shaped member is rotated around the axis of the bolt.

Below, the form for implementing the fastening fitting according to this embodiment will be described in detail with reference to the drawings.

First Embodiment
First, a fastening fitting 1 according to the first embodiment will be described. As shown in Fig. 1, the fastening fitting 1 is for connecting a first plate-like member and a second plate-like member, for example, for connecting a first liner plate 8 and a second liner plate 9.

The first liner plate 8 has a corrugated steel plate formed into a corrugated shape in the vertical direction, and flanges 81 as first plate-like members at the upper end, lower end, and both side ends of the corrugated steel plate. A first through hole 82 is formed in the flange 81.

The second liner plate 9 has a corrugated steel plate formed into a corrugated shape in the vertical direction, and flanges 91 as second plate-like members at the upper end, lower end, and both side ends of the corrugated steel plate. A second through hole 92 is formed in the flange 91.

The fastening fitting 1 comprises a bolt 2, a nut 30, a base 4, and a rod-shaped member 5.

The bolt 2 has a shaft portion 21 formed in a threaded shape on the circumferential surface, a head portion 22 disposed on one end side of the shaft portion 21, and a base portion 4. A nut 30 is screwed onto the shaft portion 21 of the bolt 2. A washer 23 is provided on the head portion 22 of the bolt 2. A washer 31 is provided on the nut 30. For example, a Zessner bolt having a larger thread pitch than a normal bolt is preferably used as the bolt 2. For example, a high nut having a higher height than a normal hexagonal nut is preferably used as the nut 30. By using a high nut as the nut 30, it becomes easier to hold the nut by hand when screwing it onto the bolt 2.

The base 4 is made of a steel plate or the like and is attached to the head 22. The base 4 has a through hole 41 formed therein through which the rod-shaped member 5 is inserted.

The rod-shaped member 5 is provided on the head 22 of the bolt 2 and extends in a direction intersecting, for example, perpendicular to, the axis of the bolt 2. The rod-shaped member 5 is slidably inserted into the through hole 41 formed in the base 4 in the direction of the arrow S in FIG. 3. The rod-shaped member 5 has a first enlarged diameter portion 51 at one end that is enlarged in diameter from the through hole, and a second enlarged diameter portion 52 at the other end opposite the one end that is enlarged in diameter from the through hole. The first enlarged diameter portion 51 and the second enlarged diameter portion 52 are enlarged in diameter in the vertical direction.

The first enlarged diameter portion 51 and the second enlarged diameter portion 52 in the present invention may be enlarged in a direction perpendicular to the vertical direction. The first enlarged diameter portion 51 and the second enlarged diameter portion 52 in the present invention may be formed using rivets, bolts, or the like. They may also be formed by welding to build up a larger diameter than the through hole 41. The first enlarged diameter portion 51 and the second enlarged diameter portion 52 in the present invention may be formed in a spherical shape, etc.

Next, we will explain the method of fastening liner plates using the fastening fitting 1 according to the first embodiment.

First, in the method of fastening the liner plate, as shown in FIG. 4(a), the shaft portion 21 of the bolt 2 is inserted into the first through hole 82 and the second through hole 92. At this time, the washer 23 is in contact with the flange 81. Then, the washer 31 and the nut 30 are attached to the shaft portion 21 of the bolt 2. At this time, the worker may hold the head portion 22 of the bolt 2 while screwing the nut 30.

Next, in the method of fastening the liner plates, as shown in FIG. 4(b), the worker holds the nut 30 with his/her hand or a tool and rotates the rod-shaped member 5 around the axis of the bolt 2. This makes it possible to obtain a larger torque. This makes it possible to ensure sufficient fastening force between the liner plates.

This completes the method for fastening the liner plate.

According to this embodiment, a fastening fitting 1 for connecting a first liner plate 8 in which a first through hole 82 is formed and a second liner plate 9 in which a second through hole 92 is formed is provided with a bolt 2 that can be inserted into the first through hole 82 and the second through hole 92, a nut 30 that is screwed onto the shaft portion 21 of the bolt 2, and a rod-shaped member 5. This allows the rod-shaped member 5 to rotate around the axis of the bolt 2. This allows a larger torque to be obtained, making it possible to sufficiently secure the fastening force between the liner plates.

Furthermore, according to this embodiment, unlike conventional metal fittings, there is no need to clamp the clamping part into the flange or remove it from the liner plate. In addition, by rotating the rod-shaped member 5 around the axis of the bolt 2, a larger torque can be obtained. This makes it possible to omit the work of striking with a dedicated tool, hammer, impact wrench, or other striking means. This makes it possible to reduce noise during construction.

According to this embodiment, the bolt 2 has a base 4 provided on the head 22, and the base 4 is formed with a through hole 41 into which the rod-shaped member 5 is inserted, and the rod-shaped member 5 is slidably inserted into the through hole 41. This makes it possible to prevent the rod-shaped member 5 from contacting the corrugated steel plate arranged approximately perpendicular to the flanges 81, 91 of the liner plates 8, 9 when the rod-shaped member 5 is rotated around the axis of the bolt 2. This makes it possible to ensure a sufficient length of the rod-shaped member 5, and makes it easy to rotate the rod-shaped member 5 around the axis of the bolt 2.

According to this embodiment, the rod-shaped member 5 has a first enlarged diameter portion 51 at one end, which is enlarged in diameter more than the through hole 41. This makes it difficult for the rod-shaped member 5 to fall out of the through hole 41. This makes it easier to tighten the liner plate.

According to this embodiment, the rod-shaped member 5 has a first enlarged diameter portion 51 at one end, which is enlarged in diameter than the through hole 41, and a second enlarged diameter portion 52 at the other end, which is enlarged in diameter than the through hole 41. This makes it possible to prevent the rod-shaped member 5 from falling out of the through hole 41. This makes it easier to tighten the liner plate.

In this embodiment, a Zessner bolt is used as the bolt 2. This eliminates the need to rotate the nut multiple times as with normal bolts and nuts. This makes it easier to tighten the liner plate.

Next, modified examples of the fastening fitting 1 according to the first embodiment will be described. As shown in FIG. 5(a), the fastening fitting 1 may be configured such that the second enlarged diameter portion 52 is omitted. Also, as shown in FIG. 5(b), the fastening fitting 1 may be configured such that the first enlarged diameter portion 51 and the second enlarged diameter portion 52 are omitted. In this case, the rod-shaped member 5 may be, for example, a rod material that extends to a predetermined diameter.

Second Embodiment
Next, a fastening fitting 1 according to a second embodiment will be described. As shown in Figures 6 and 7, the fastening fitting 1 includes a bolt 2, a nut 30, and a base 4. The fastening fitting 1 according to the second embodiment differs from the fastening fitting 1 according to the first embodiment in that a rod-shaped member 5 is not provided in advance in the through hole 41.

In the fastening fitting 1 according to the second embodiment, the base 4 is made of a steel plate or the like and is provided on the head 22. The base 4 is formed with a through hole 41 into which the rod-shaped member 5 is inserted. The through hole 41 is capable of inserting a rod-shaped member such as a chisel.

Next, we will explain the method of fastening liner plates using the fastening fitting 1 according to the second embodiment.

First, in the method of fastening the liner plate, as shown in FIG. 8(a), the shaft portion 21 of the bolt 2 is inserted into the first through hole 82 and the second through hole 92. At this time, the washer 23 is in contact with the flange 81. Then, the washer 31 and the nut 30 are attached to the shaft portion 21 of the bolt 2. At this time, the worker may hold the head portion 22 of the bolt 2 while screwing the nut 30.

Next, in the method of fastening the liner plates, as shown in FIG. 8(b), a rod-shaped member 7 such as a spline is inserted into the through hole 41 of the base 4. Then, the worker holds the nut 30 by hand or with a tool, and rotates the rod-shaped member 7 around the axis of the bolt 2. This makes it possible to obtain a larger torque. This makes it possible to ensure sufficient fastening force between the liner plates.

This completes the method for fastening the liner plate.

According to this embodiment, a fastening fitting 1 for connecting a first liner plate 8 in which a first through hole 82 is formed and a second liner plate 9 in which a second through hole 92 is formed is provided with a bolt 2 that can be inserted into the first through hole 82 and the second through hole 92, and a nut 30 that is screwed onto the shaft portion 21 of the bolt 2. The bolt 2 has a base portion 4 provided on the head portion 22, and the base portion 4 has a through hole 41 formed therein. This allows a rod-shaped member 7 such as a spline to be inserted into the through hole 41 of the base portion 4. Therefore, the rod-shaped member 7 can be rotated around the axis of the bolt 2, and a larger torque can be obtained. This makes it possible to sufficiently secure the fastening force between the liner plates.

Furthermore, according to this embodiment, unlike conventional metal fittings, there is no need to clamp the clamping part into the flange or remove it from the liner plate. In addition, by rotating the rod-shaped member 7 around the axis of the bolt 2, a larger torque can be obtained. This makes it possible to omit the work of striking with a special tool, hammer, impact wrench, or other striking means. This makes it possible to reduce noise during construction.

In the above embodiment, the fastening fitting 1 has been described as a fastening fitting for fastening liner plates, but it can also be used as a fastening fitting for plate-shaped members, not limited to liner plates.

Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in appropriate combinations. Furthermore, this invention can be implemented in various new forms in addition to the above-mentioned several embodiments. Therefore, each of the above-mentioned several embodiments can be variously omitted, replaced, or modified without departing from the gist of this invention. Such new forms and modifications are included in the scope and gist of this invention, as well as in the invention described in the claims and the scope of equivalents of the invention described in the claims.

1: Fastening fitting 2: Bolt 21: Shaft portion 22: Head portion 23: Washer 30: Nut 31: Washer 4: Base portion 41: Through hole 5: Rod-shaped member 51: First enlarged diameter portion 52: Second enlarged diameter portion 7: Rod-shaped member 8: First liner plate 81: Flange 82: First through hole 9: Second liner plate 91: Flange 92: Second through hole

Claims (6)

A fastening fitting for connecting a first plate-like member having a first through hole formed therein and a second plate-like member having a second through hole formed therein,
a bolt that can be inserted into the first through hole and the second through hole;
A nut screwed onto a shaft portion of the bolt;
a rod-shaped member provided on the head of the bolt and extending in a direction intersecting an axis of the bolt ,
The head of the bolt is formed in a hexagonal column shape,
The bolt further includes a base portion provided on an upper surface of the head portion of the bolt and made of a steel plate,
the base portion has a rectangular through hole into which the rod-shaped member is inserted,
The fastening fitting is characterized in that the portion of the rod-shaped member that is inserted into the through hole is formed to have a rectangular cross section, and is inserted into the through hole so as to be slidable only in the horizontal direction . 2. The fastening device according to claim 1, wherein the first plate member and the second plate member are flanges of a liner plate. 3. The fastening fitting according to claim 1 or 2 , wherein the rod-shaped member has at one end a first enlarged diameter portion having a diameter larger than that of the through hole. The fastening fitting according to any one of claims 1 to 3, characterized in that the rod-shaped member has a first enlarged diameter portion at one end that is enlarged in diameter than the through hole, and a second enlarged diameter portion at the other end that is enlarged in diameter than the through hole. A fastening fitting for connecting a first plate-like member having a first through hole formed therein and a second plate-like member having a second through hole formed therein,
a bolt that can be inserted into the first through hole and the second through hole;
A nut screwed onto the bolt,
The head of the bolt is formed in a hexagonal column shape,
The bolt further includes a base portion provided on an upper surface of the head portion of the bolt and made of a steel plate,
The fastening fitting is characterized in that a through hole is formed in the base. 6. The fastening device according to claim 5 , wherein the first plate member and the second plate member are flanges of a liner plate.

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