Fastening hardware

Abstract

To provide a binding metal fitting allowing noise during installation to be reduced and binding force to be sufficiently secured.SOLUTION: A binding metal fitting 1 according to an embodiment of the present invention for connecting a first liner plate 8 in which a firs through hole is formed and a second liner plate 9 in which a second through hole is formed, is provided with: a bolt 2 insertable in the first through hole and the second through hole; a nut 30 screwed on a shaft part 21 of the bolt 2; and a rod-like member 5 arranged on a head part 22 of the bolt 2 and extending in a direction intersecting with the shaft core of the bolt 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fastening fitting. [Background technology]

[0002] Structures are constructed by connecting corrugated steel plates such as liner plates and corrugated steel plates to each other. For example, multiple liner plates are connected to each other 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 to each other to be used as waterways.

[0003] Conventionally, techniques for connecting liner plates to each other have been proposed, as disclosed in Patent Documents 1 and 2.

[0004] The liner plate fastening fitting disclosed in Patent Document 1 is characterized by comprising an insertion portion that is inserted into the holes of each of the contacting flanges of the upper and lower liner plates, and a clamping portion that clamps the two contacting flanges.

[0005] The temporary fastening device for liner plates disclosed in Patent Document 2 consists of an insertion portion that is inserted into the holes of both contacting flanges of the upper and lower liner plates, a clamping portion with slits spaced apart to allow the two flanges to be inserted, and a connecting portion that connects the insertion portion and the clamping portion, and is characterized by being folded in an "U" shape from the connecting portion to the clamping portion. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Utility Model Application Publication No. 3-69093 [Patent Document 2] Japanese Utility Model Application Publication No. 2-125095 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in 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 dedicated tool or a striking means such as a hammer. This causes a problem of noise generation. In addition, in the techniques disclosed in Patent Documents 1 and 2, the flanges are simply clamped together and fixed, so there is a problem that the force for fixing the flanges together is relatively low.

[0008] The present invention has been devised in consideration of the above-mentioned problems, and its object is to provide a fastening fitting which makes it possible to reduce noise during installation and ensure sufficient fastening force. [Means for solving the problem]

[0009] The fastening fitting according to the present invention is 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, and includes 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-like member that is provided on the head of the bolt and extends in a direction intersecting with the axial center of the bolt. The head of the bolt is formed in a hexagonal column shape, and further includes a base portion that is provided on an upper surface of the head of the bolt and is made of a steel plate, the base portion has a rectangular through hole into which the rod-shaped member is inserted, the rod-shaped member has a portion that is inserted into the through hole and is formed in a rectangular cross section, and is inserted into the through hole so as to be slidable only in the horizontal direction. It is characterized by the above.

[0010] The fastening fitting according to the present invention comprises 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 a second plate-like member to be fastened to the first plate-like member, the fastening fitting having a first through hole and a second through hole. a bolt that can be inserted into the bolt holder, and a nut that is screwed onto the bolt, The head of the bolt is formed into a hexagonal column shape, and further includes a base portion provided on an upper surface of the head of the bolt and made of a steel plate, The base portion is characterized in that a through hole is formed. Effect of the Invention

[0011] According to the present invention, it is possible to reduce noise during construction and ensure sufficient fastening force. [Brief description of the drawings]

[0012] [Figure 1]FIG. 1 is a perspective view showing a liner plate using fastening fittings according to the first embodiment. [Diagram 2] FIG. 2 is a perspective view showing the fastening fitting according to the first embodiment. [Diagram 3] FIG. 3 is a front view showing the fastening fitting according to the first embodiment. [Figure 4] Figure 4 is a diagram explaining a method of fastening liner plates using fastening fittings 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. [Diagram 5] 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. [Figure 6] FIG. 6 is a perspective view showing a liner plate using fastening fittings according to the second embodiment. [Figure 7] FIG. 7 is a perspective view showing a fastening fitting according to the second embodiment. [Figure 8] Figure 8 is a diagram explaining a method of fastening liner plates using fastening fittings in 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. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description will be given of an embodiment of the fastening fitting according to the present invention with reference to the drawings.

[0014] (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.

[0015] 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. The flanges 81 have first through holes 82 formed therein.

[0016] 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. The flanges 91 have second through holes 92 formed therein.

[0017] The fastening fitting 1 comprises a bolt 2 , a nut 30 , a base 4 , and a rod-shaped member 5 .

[0018] 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.

[0019] 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.

[0020] The rod-shaped member 5 is provided in 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 a 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 portion, which is enlarged in diameter than the through hole, and a second enlarged diameter portion 52 at the other end portion opposite the one end portion, which is enlarged in diameter than the through hole. The first enlarged diameter portion 51 and the second enlarged diameter portion 52 are enlarged in diameter in the vertical direction.

[0021] 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 up-down 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 have 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, or the like.

[0022] Next, a method for fastening liner plates using the fastening fitting 1 according to the first embodiment will be described.

[0023] First, in the method for fastening the liner plates, 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.

[0024] 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 a sufficient fastening force between the liner plates.

[0025] This completes the method for fastening the liner plates.

[0026] According to this embodiment, the fastening fitting 1 for connecting the first liner plate 8 in which the first through hole 82 is formed and the second liner plate 9 in which the second through hole 92 is formed includes 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 makes it possible to obtain a larger torque and ensure a sufficient fastening force between the liner plates.

[0027] Furthermore, according to this embodiment, the work of clamping the clamping part to the flange or removing it from the liner plate, as in conventional metal fittings, is not required. 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.

[0028] According to this embodiment, the bolt 2 has a base 4 provided on the head 22, 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 coming into contact with the corrugated steel plate disposed approximately perpendicular to the flanges 81, 91 of the liner plates 8, 9 when the rod-shaped member 5 is rotated about the axis of the bolt 2. This makes it possible to ensure a sufficient length of the rod-shaped member 5, and makes it possible to easily rotate the rod-shaped member 5 about the axis of the bolt 2.

[0029] According to this embodiment, the rod-shaped member 5 has at one end a first enlarged diameter portion 51 having a diameter larger than that of 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 fasten the liner plates.

[0030] According to this embodiment, the rod-shaped member 5 has a first enlarged diameter portion 51 at one end, the diameter of which is larger than that of the through hole 41, and a second enlarged diameter portion 52 at the other end, the diameter of which is larger than that of 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 possible to more easily perform the work of fastening the liner plates.

[0031] According to this embodiment, a Zessner bolt is used as the bolt 2. This eliminates the need to rotate the nut many times as with a normal bolt nut. This makes it easier to fasten the liner plate.

[0032] 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 omit the second enlarged diameter portion 52. Also, as shown in Fig. 5(b), the fastening fitting 1 may omit the first enlarged diameter portion 51 and the second enlarged diameter portion 52. In this case, the rod-shaped member 5 is, for example, a rod material that extends to a predetermined diameter.

[0033] Second embodiment Next, the fastening fitting 1 according to the 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.

[0034] 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 a rod-shaped member 5 is inserted. The through hole 41 is capable of receiving a rod-shaped member such as a splint.

[0035] Next, a method for fastening liner plates using the fastening fitting 1 according to the second embodiment will be described.

[0036] First, in the method for fastening the liner plates, 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.

[0037] 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 a sufficient fastening force between the liner plates.

[0038] This completes the method for fastening the liner plates.

[0039] 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 a shaft portion 21 of the bolt 2. The bolt 2 has a base portion 4 provided on a 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.

[0040] Furthermore, according to this embodiment, the work of clamping the clamping part to the flange or removing it from the liner plate, as in conventional metal fittings, is not required. 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 dedicated tool, hammer, impact wrench, or other striking means. This makes it possible to reduce noise during construction.

[0041] In the above embodiment, the fastening fitting 1 has been described as a fastening fitting for fastening liner plates, but it can be embodied as a fastening fitting for plate-like members other than liner plates.

[0042] Although some of the 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. In addition, these embodiments can be implemented in appropriate combinations. Furthermore, the present 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, and modified without departing from the gist of the present invention. Such new forms and modifications are included in the scope and gist of the present invention, and are included in the scope of the invention described in the claims and the equivalents of the invention described in the claims. [Explanation of symbols]

[0043] 1: Fastening hardware 2: Bolt 21: Shaft 22:Head 23: Washer 30: Nut 31: Washer 4: Base 41: Through hole 5: Rod-shaped member 51: 1st enlarged diameter part 52:Second enlarged diameter part 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

1. 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 rod-shaped member has a rectangular cross-sectional shape at a portion to be inserted into the through hole, and is slidably inserted into the through hole only in the horizontal direction. A fastening fitting characterized by:

2. The first plate-like member and the second plate-like member are flanges of a liner plate. The fastening hardware according to claim 1,

3. The rod-shaped member has a first enlarged diameter portion at one end, the first enlarged diameter portion being larger in diameter than the through hole.

3. The fastening fitting according to claim 1 or 2,

4. The rod-shaped member has a first enlarged diameter portion at one end, the first enlarged diameter portion being larger in diameter than the through hole, and a second enlarged diameter portion at the other end, the second enlarged diameter portion being larger in diameter than the through hole. The fastening fitting according to any one of claims 1 to 3, characterized in that

5. A first plate-like member in which a first through hole is formed, and a second plate-like member in which a second through hole is formed, A fastening fitting for connecting, 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 base portion has a through hole formed therein. A fastening fitting characterized by:

6. The first plate-like member and the second plate-like member are flanges of a liner plate. The fastening fitting according to claim 5,

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