Connection fittings
The connection fitting for corrugated steel plates addresses noise and maintains inner diameter by using a rod-shaped main body with insertion and contact portions for noiseless assembly.
Patent Information
- Application Number
- JP2021060468
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-03-31
- Publication Date
- 2025-02-10
- Estimated Expiration
- 2041-03-31
AI Technical Summary
Existing connection methods for corrugated steel plates in structures like deep foundation piles and water catchment wells cause noise due to the need for hammers and result in reduced inner diameters due to protruding systems.
A connection fitting with a rod-shaped main body featuring multiple insertion and contact portions that allow for noiseless assembly and maintain the inner diameter by sandwiching flanges without protrusion.
Reduces construction noise and ensures the inner diameter of the corrugated steel plates, facilitating easier and faster assembly.
Smart Images
Figure 0007628454000001 
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Figure 0007628454000003
Abstract
Description
[Technical field]
[0001] The present invention relates to a 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 flange in the clamping portion or removing it from the liner plate, it is necessary to strike it with a special 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 flange is arranged protruding into the space inside the liner plate. This means that the inner diameter of the liner plate that is originally required cannot be secured, and the inner diameter must be increased at the design stage.
[0008] Therefore, the present invention has been devised in consideration of the above-mentioned problems, and its object is to provide a connecting fitting that makes it possible to reduce noise during installation and ensure the inner diameter of the liner plate. [Means for solving the problem]
[0009] The connecting fitting according to the present invention is a connecting fitting for connecting a first liner plate in which a plurality of first through holes are formed and a second liner plate in which a plurality of second through holes are formed, and comprises a rod-shaped main body portion formed in a rod shape, the rod-shaped main body portion having a first insertion portion formed on one end side of the rod-shaped main body portion and insertable into one first through hole and one second through hole, a second insertion portion formed on the other end side of the rod-shaped main body portion and insertable into another first through hole and another second through hole, and a first contact portion formed between the first insertion portion and the second insertion portion and capable of contacting the first liner plate. the first insertion portion has a first bent portion formed by bending the rod-shaped main body portion, a second bent portion formed by bending the rod-shaped main body portion between the first bent portion and one end of the rod-shaped main body portion, and a second contact portion capable of contacting a second liner plate on the one end side of the rod-shaped main body portion relative to the second bent portion; the second insertion portion has a third bent portion formed by bending the first bent portion along a bending direction, and a third contact portion capable of contacting a second liner plate on the other end side of the rod-shaped main body portion relative to the third bent portion. The first contact portion and the second contact portion are parallel to each other, and further include an inclined portion between the first contact portion and the third bent portion, the inclined portion being inclined with respect to the first contact portion in a direction away from the first liner plate. The present invention is characterized by the above. The connecting fitting according to the present invention is a connecting fitting for connecting a first liner plate in which a plurality of first through holes are formed and a second liner plate in which a plurality of second through holes are formed, and comprises a rod-shaped main body portion formed in a rod shape, the rod-shaped main body portion having a first insertion portion formed on one end side of the rod-shaped main body portion and insertable into one first through hole and one second through hole, a second insertion portion formed on the other end side of the rod-shaped main body portion and insertable into another first through hole and another second through hole, and a first contact portion formed between the first insertion portion and the second insertion portion and capable of contacting a first liner plate, the first insertion portion having a first bent portion formed by bending the rod-shaped main body portion, and a first contact portion formed between the first bent portion and the rod-shaped main body portion. the second insertion portion has a third bent portion formed by folding the rod-shaped main body portion along the bending direction of the first bent portion, and a third contact portion capable of contacting the second liner plate on the other end side of the rod-shaped main body portion than the third bent portion, and the second insertion portion further has a fourth bent portion formed by folding the rod-shaped main body portion between the third bent portion and the other end of the rod-shaped main body, and the third contact portion is formed on the other end side of the rod-shaped main body portion than the fourth bent portion. Effect of the Invention
[0010] According to the present invention, it is possible to reduce noise during construction and ensure the inner diameter of the liner plate. [Brief description of the drawings]
[0011] [Figure 1] FIG. 1 is a perspective view showing a liner plate connected using a connecting fitting according to the first embodiment. [Diagram 2] FIG. 2 is a front view showing the connecting piece according to the first embodiment. [Diagram 3] FIG. 3 is a diagram illustrating a method for connecting liner plates using the connecting fitting according to the first embodiment, and is a front view showing a state in which the first insertion part has been inserted. [Figure 4] Figure 4 is a diagram explaining a method of connecting a liner plate using a connecting fitting in the first embodiment, and is an oblique view showing the state in which the first contact portion is brought into contact with the periphery of the first through hole to lift the liner plate. [Diagram 5] Figure 5 is a diagram explaining a method of connecting liner plates using a connecting fitting according to the first embodiment, and is an oblique view showing the connecting fitting according to the first embodiment with the first contact portion in contact with the flange. [Figure 6] FIG. 6 is a diagram illustrating a method for connecting liner plates using the connecting fitting according to the first embodiment, and is a front view showing a state in which the third contact portion is screwed into the threaded portion. [Figure 7] FIG. 7 is a front view showing a liner plate connected using a connecting fitting according to the second embodiment. [Figure 8] FIG. 8 is a perspective view showing a liner plate connected using a connecting fitting according to the third embodiment. [Figure 9] FIG. 9 is a perspective view showing a connecting fitting according to the third embodiment. [Figure 10]Figure 10 is a diagram explaining a method of connecting liner plates using connecting fittings in the third embodiment, where Figure 10(a) is a front view showing the state before the first insertion portion and the second insertion portion are inserted into the first through hole and the second through hole, and Figure 10(b) is a side view thereof. [Figure 11] Figure 11 is a diagram explaining a method of connecting liner plates using connecting fittings in the third embodiment, where Figure 11(a) is a front view showing the state after the second contact portion and the third contact portion have been brought into contact with the flange, and Figure 11(b) is a side view thereof. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description will be given of a connector fitting according to an embodiment with reference to the drawings.
[0013] (First embodiment) As shown in FIG. 1, the connecting fitting 1 is for connecting a first liner plate 8 and a second liner plate.
[0014] The first liner plate 8 has a corrugated steel plate formed into a corrugated shape in the vertical direction, and flanges 81 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.
[0015] The second liner plate 9 has a corrugated steel plate formed into a corrugated shape in the vertical direction, and flanges 91 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.
[0016] As shown in Fig. 2, the connecting fitting 1 includes a rod-shaped main body 2 formed in a rod shape with a circular cross section. The rod-shaped main body 2 has a first insertion portion 3, a second insertion portion 4, a first contact portion 21, an inclined portion 22, and a fifth bent portion 23.
[0017] The first insertion portion 3 is formed on one end portion 2a side of the rod-shaped main body portion 2. The first insertion portion 3 can be inserted into one first through hole 82 and one second through hole 92 adjacent to the one first through hole 82. The first insertion portion 3 has a first bent portion 31, a second bent portion 32, and a second contact portion 33.
[0018] The first bending portion 31 bends the rod-shaped main body 2 at a predetermined angle. For example, the first bending portion 31 bends the rod-shaped main body 2 at an angle of 45°.
[0019] The second bending portion 32 is formed by bending the rod-shaped main body 2 between the first bending portion 31 and one end 2a of the rod-shaped main body 2. The second bending portion 32 is formed by bending the rod-shaped main body 2 at a predetermined angle in the in-plane direction of the first bending surface along which the first bending portion 31 is bent. For example, the second bending portion 32 is formed by bending the rod-shaped main body 2 at an angle of 45° in the in-plane direction of the first bending surface along which the first bending portion 31 is bent, and is parallel to the first contact portion 21. The second bending portion 32 is formed by bending the rod-shaped main body 2 in a direction such that one end 2a of the rod-shaped main body 2 is separated from the other end 2b of the rod-shaped main body 2. The second bending portion 32 may be bent in any direction.
[0020] The second contact portion 33 is formed closer to one end 2 a of the rod-shaped main body 2 than the second bent portion 32 is, and is capable of coming into contact with the flange 91 of the second liner plate 9 .
[0021] The second insertion portion 4 is formed on the other end 2b side of the rod-shaped main body 2. The second insertion portion 4 can be inserted into another first through hole 82 different from the one first through hole 82, and into another second through hole 92 adjacent to the other first through hole 82. The second insertion portion 4 has a third bent portion 41, a third contact portion 43, and a screw portion 49.
[0022] The third bending portion 41 bends the rod-shaped main body 2 along the bending direction of the first bending portion 31. The third bending portion 41 bends the rod-shaped main body 2 at a predetermined angle in the in-plane direction of the first bending surface along which the first bending portion 31 is bent. For example, the third bending portion 41 bends the rod-shaped main body 2 at an angle of 90° in the in-plane direction of the first bending surface along which the first bending portion 31 is bent.
[0023] The third contact portion 43 is formed closer to the other end 2b of the rod-shaped main body 2 than the third bent portion 41, and is capable of contacting the flange 91 of the second liner plate 9. The third contact portion 43 is capable of being screwed into a threaded portion 49, which is formed by threading the circumferential surface of the other end 2b of the second insertion portion 4. The third contact portion 43 is composed of a nut 44 that can be screwed into the threaded portion 49, and a washer 45 that is disposed adjacent to the nut 44. A washer-equipped nut in which the nut 44 and the washer 45 are integrally formed is used as the third contact portion 43. The third contact portion 43 may be such that the nut 44 and the washer 45 are separable.
[0024] The first contact portion 21 is formed between the first insertion portion 3 and the second insertion portion 4. The first contact portion 21 is capable of contacting the flange 81 of the first liner plate 8. The first contact portion 21 is formed parallel to the second contact portion 33. The first contact portion 21 is formed to extend in a uniform direction so as to be parallel to the flanges 81, 91.
[0025] The inclined portion 22 is formed at an angle with respect to the first contact portion 21 by bending the rod-shaped main body portion 2 at the fifth bent portion 23 .
[0026] Next, a liner plate connecting method for connecting a first liner plate 8 and a second liner plate 9 using the connecting fitting 1 according to the first embodiment will be described.
[0027] 3, a connecting fitting 1 is prepared in which the third contact portion 43 is not provided on the screw portion 49. In a method for connecting liner plates, first, the connecting fitting 1 is placed on the first liner plate 8 side, and the first insertion portion 3 is inserted into one first through hole 82-1 and one second through hole 92-1. At this time, the flange 81 and the flange 91 may be spaced apart.
[0028] Next, in the method of connecting the liner plates, as shown in Fig. 4, the second insertion portion 4 is inserted into the other first through hole 82-2 and the other second through hole 92-2. At this time, the first contact portion 21 is brought into contact with the periphery of the first through hole 82-1 of the first liner plate 8, and the second contact portion 33 is brought into contact with the flange 91 of the second liner plate 9. Therefore, according to the principle of a lever with the second contact portion 33 as the fulcrum and the first contact portion 21 as the point of application, the flange 81 in contact with the first contact portion 21 can be lifted. Then, the lifted flange 81 is brought into contact with the flange 91.
[0029] Next, in the method of connecting the liner plates, the second insertion portion 4 is inserted so that the first contact portion 21 parallel to the flanges 81, 91 is parallel to the flanges 81, 91 as shown in FIG.
[0030] Next, in the method of connecting the liner plates, as shown in Fig. 6, the third contact portion 43 is screwed into the threaded portion 49 of the second insertion portion 4, and the third contact portion 43 is brought into contact with the flange 91. This allows the first contact portion 21, the second contact portion 33, and the third contact portion 43 to be fixed by sandwiching the flanges 81 and 91 without protruding into the space inside the liner plates. This completes the method of connecting the liner plates.
[0031] According to this embodiment, the rod-shaped main body portion 2 is provided with a rod-shaped main body portion 2, the rod-shaped main body portion 2 having a first insertion portion 3 formed on one end portion 2a side of the rod-shaped main body portion 2 and insertable into one first through hole 82-1 and one second through hole 92-1, a second insertion portion 4 formed on the other end portion 2b side of the rod-shaped main body portion 2 and insertable into another first through hole 82-2 and another second through hole 92-2, and a first contact portion 21 formed between the first insertion portion 3 and the second insertion portion 4 and capable of contacting the first liner plate 8. The first insertion portion 3 is a first contact portion 21 formed by bending the rod-shaped main body portion 2. The second insertion portion 4 has a bending portion 31, a second bending portion 32 formed by bending the rod-shaped main body portion 2 between the first bending portion 31 and one end 2a of the rod-shaped main body portion 2, and a second contact portion 33 capable of contacting the second liner plate 9 on the one end 2a side of the rod-shaped main body portion 2 closer to the second bending portion 32, and the second insertion portion 4 has a third bending portion 41 formed by bending along the bending direction of the first bending portion 31, and a third contact portion 43 capable of contacting the second liner plate 9 on the other end 2b side of the rod-shaped main body portion 2 closer to the third bending portion 41.
[0032] This allows the first contact portion 21, the second contact portion 33, and the third contact portion 43 to sandwich and fix the flanges 81 and 91. At this time, the liner plates can be connected to each other without hitting them with a dedicated tool or hammer as in the past. This makes it possible to reduce noise during construction.
[0033] Furthermore, according to this embodiment, when the liner plates are connected to each other using the connecting fittings 1, the connecting fittings 1 are arranged without protruding into the space inside the liner plates, making it possible to ensure the inner diameter of the liner plates.
[0034] According to this embodiment, the second insertion portion 4 has a threaded portion 49 threaded on the circumferential surface, and the third contact portion 43 can be screwed into the threaded portion 49. As a result, the third contact portion 43 is screwed into the threaded portion 49, and no special tightening work is required for the first insertion portion 3. Therefore, the number of tightening operations can be reduced compared to when connecting the liner plates with normal bolts and nuts, and construction time can be shortened.
[0035] Furthermore, according to this embodiment, the liner plates can be connected to each other by fastening force by screwing the third contact portion 43 into the threaded portion 49. It is possible to firmly connect the liner plates to each other.
[0036] According to this embodiment, the second bent portion 32 is bent in a direction away from the other end 2b of the rod-shaped main body 2. This ensures a longer distance from the second contact portion 33, which serves as the fulcrum, to the first contact portion 21, which serves as the point of application. Therefore, the flange 81 can be easily lifted by the principle of leverage with the second contact portion 33 as the fulcrum and the first contact portion 21 as the point of application. As a result, the construction work can be easily performed.
[0037] Second embodiment Next, a connecting piece 1 according to a second embodiment will be described.
[0038] In the connecting fitting 1 according to the second embodiment, as shown in Fig. 7, the second bent portion 32 is formed by bending one end 2a of the rod-shaped main body 2 toward the other end 2b of the rod-shaped main body 2. The second bent portion 32 is formed by bending the rod-shaped main body 2 between the first bent portion 31 and one end 2a of the rod-shaped main body 2. The second bent portion 32 is formed by bending the rod-shaped main body 2 at a predetermined angle in the in-plane direction of the first bent surface along which the first bent portion 31 is bent. For example, the third bent portion 41 is formed by bending the rod-shaped main body 2 at an angle of 90° in the in-plane direction of the first bent surface along which the first bent portion 31 is bent.
[0039] In particular, according to this embodiment, the second bent portion 32 is formed by bending one end 2a of the rod-shaped main body 2 toward the other end 2b of the rod-shaped main body 2. This causes the second contact portion 33, which serves as a fulcrum, to be disposed between the first through hole 82-1 and the second through hole 82-2. This reduces the acting width of the couple of forces, making it possible to suppress deformation of the flange 81 and the flange 91.
[0040] Third embodiment Next, a connecting piece 1 according to a third embodiment will be described.
[0041] A connecting fitting 1 according to the third embodiment includes a rod-shaped main body 2 formed in a rod shape with a circular cross section, as shown in Figures 8 and 9. The rod-shaped main body 2 has a first insertion portion 3, a second insertion portion 4, and a first contact portion 21.
[0042] The first insertion portion 3 is formed on one end portion 2a side of the rod-shaped main body portion 2. The first insertion portion 3 can be inserted into one first through hole 82 and one second through hole 92 adjacent to the one first through hole 82. The first insertion portion 3 has a first bent portion 31, a second bent portion 32, and a second contact portion 33.
[0043] The first bending portion 31 bends the rod-shaped main body 2 at a predetermined angle. For example, the first bending portion 31 bends the rod-shaped main body 2 at an angle of 90°.
[0044] The second bending portion 32 bends the rod-shaped main body 2 between the first bending portion 31 and one end 2a of the rod-shaped main body 2. The second bending portion 32 bends the rod-shaped main body 2 at a predetermined angle in a direction perpendicular to the in-plane direction of the first bending surface along which the first bending portion 31 is bent. For example, the second bending portion 32 bends the rod-shaped main body 2 at an angle of 90° in a direction perpendicular to the in-plane direction of the first bending surface along which the first bending portion 31 is bent.
[0045] The second contact portion 33 is formed closer to one end 2 a of the rod-shaped main body 2 than the second bent portion 32 is, and is capable of coming into contact with the flange 91 of the second liner plate 9 .
[0046] The second insertion portion 4 is formed on the other end portion 2b side of the rod-shaped main body 2. The second insertion portion 4 can be inserted into another first through hole 82 different from the one first through hole 82, and into another second through hole 92 adjacent to the other first through hole 82. The second insertion portion 4 has a third bent portion 41, a fourth bent portion 42, and a third contact portion 43.
[0047] The third bending portion 41 bends the rod-shaped main body 2 along the bending direction of the first bending portion 31. The third bending portion 41 bends the rod-shaped main body 2 at a predetermined angle in the in-plane direction of the first bending surface along which the first bending portion 31 is bent. For example, the third bending portion 41 bends the rod-shaped main body 2 at an angle of 90° in the in-plane direction of the first bending surface along which the first bending portion 31 is bent.
[0048] The fourth bending portion 42 is formed by bending the rod-shaped main body 2 between the third bending portion 41 and the other end 2b of the rod-shaped main body 2. The fourth bending portion 42 is formed by bending the rod-shaped main body 2 at a predetermined angle in a direction perpendicular to the in-plane direction of the first bending surface along which the first bending portion 31 is bent. For example, the fourth bending portion 42 is formed by bending the rod-shaped main body 2 at an angle of 90° in a direction perpendicular to the in-plane direction of the first bending surface along which the first bending portion 31 is bent. That is, the fourth bending portion 42 is bent in the same direction as the second bending portion 32. The fourth bending portion 42 may be bent in any direction.
[0049] The third contact portion 43 is formed closer to the other end 2 b of the rod-shaped main body 2 than the fourth bent portion 42 is, and is capable of coming into contact with the flange 91 of the second liner plate 9.
[0050] The first contact portion 21 is formed between the first insertion portion 3 and the second insertion portion 4. The first contact portion 21 is capable of contacting the flange 81 of the first liner plate 8. The first contact portion 21 is formed parallel to the second contact portion 33. The first contact portion 21 is formed to extend in a uniform direction so as to be parallel to the flanges 81, 91.
[0051] Next, a liner plate connecting method for connecting a first liner plate 8 and a second liner plate 9 using a connecting fitting 1 according to the third embodiment will be described.
[0052] In the method of connecting the liner plates, first, as shown in Figs. 10(a) and 10(b), the connecting fitting 1 is prepared and placed on the first liner plate 8 side.
[0053] Next, in the method of connecting the liner plates, the first insertion portion 3 is inserted into one of the first through holes 82-1 and one of the second through holes 92-1. At the same time, the second insertion portion 4 is inserted into the other of the first through holes 82-2 and the other of the second through holes 92-2. At this time, the first contact portion 21 is brought into contact with the flange 81. Then, the flange 81 and the flange 91 are brought into contact with each other.
[0054] Next, in the method of connecting the liner plates, as shown in Figures 11(a) and 11(b), the connecting fitting 1 is rotated 90 degrees to bring the second contact portion 33 and the third contact portion 43 into contact with the flange 91. This allows the first contact portion 21, the second contact portion 33 and the third contact portion 43 to sandwich and fix the flanges 81 and 91 together without protruding into the space inside the liner plates. This completes the method of connecting the liner plates.
[0055] In particular, according to this embodiment, the second insertion portion 4 further has a fourth bent portion 42 formed by bending the rod-shaped main body portion 2 between the third bent portion 41 and the other end portion 2b of the rod-shaped main body portion 2, and the third contact portion 43 is formed on the other end portion 2b side of the rod-shaped main body portion 2 relative to the fourth bent portion 42. As a result, no tightening work is required for the first insertion portion 3 and the second insertion portion 4. This makes it possible to shorten the construction time.
[0056] 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. In short, the present invention can be implemented in any form having the first contact portion 21, the second contact portion 33, and the third contact portion 43. 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]
[0057] 1: Connection fittings 2: Rod-shaped main body 2a: One end 2b: Other end 21: 1st contact part 22: Inclined part 23: Fifth folding section 3: First insertion part 31: First bending section 32: Second folding section 33:Second contact part 4: Second insertion part 41: Third folding section 42: Fourth bend 43:Third contact part 44: Nut 45: Washer 49: Screw part 8: First liner plate 81: Flange 82: First through hole 9: Second liner plate 91: Flange 92: Second through hole
Claims
1. A connecting fitting for connecting a first liner plate having a plurality of first through holes formed therein and a second liner plate having a plurality of second through holes formed therein, A rod-shaped main body portion formed in a rod shape is provided, The rod-shaped main body portion is a first insertion portion formed on one end side of the rod-shaped main body portion and capable of being inserted into one of the first through holes and one of the second through holes; a second insertion portion formed on the other end side of the rod-shaped main body portion and insertable into another first through hole and another second through hole; a first contact portion formed between the first insertion portion and the second insertion portion and capable of contacting a first liner plate; The first insertion portion is A first bent portion formed by bending the rod-shaped main body portion; a second bent portion formed by bending the rod-shaped main body portion between the first bent portion and one end of the rod-shaped main body portion; a second contact portion that is located closer to one end of the rod-shaped main body than the second bent portion and that is capable of contacting a second liner plate; The second insertion portion is a third bent portion formed by bending the first bent portion along a bending direction; a third contact portion that is located closer to the other end of the rod-shaped main body than the third bent portion and that is capable of contacting the second liner plate; the first contact portion and the second contact portion are parallel to each other, Further, an inclined portion is provided between the first contact portion and the third bent portion, the inclined portion being inclined with respect to the first contact portion in a direction away from the first liner plate. A connecting fitting comprising:
2. The second insertion portion has a threaded portion on a circumferential surface thereof, The third contact portion is capable of being screwed into the threaded portion. The connector according to claim 1 .
3. A connecting fitting for connecting a first liner plate having a plurality of first through holes formed therein and a second liner plate having a plurality of second through holes formed therein, A rod-shaped main body portion formed in a rod shape is provided, The rod-shaped main body portion is a first insertion portion formed on one end side of the rod-shaped main body portion and capable of being inserted into one of the first through holes and one of the second through holes; a second insertion portion formed on the other end side of the rod-shaped main body portion and insertable into another first through hole and another second through hole; a first contact portion formed between the first insertion portion and the second insertion portion and capable of contacting a first liner plate; The first insertion portion is A first bent portion formed by bending the rod-shaped main body portion; a second bent portion formed by bending the rod-shaped main body portion between the first bent portion and one end of the rod-shaped main body portion; a second contact portion that is located closer to one end of the rod-shaped main body than the second bent portion and that is capable of contacting a second liner plate; The second insertion portion is a third bent portion formed by bending the first bent portion along a bending direction; a third contact portion that is located closer to the other end of the rod-shaped main body than the third bent portion and that is capable of contacting the second liner plate; the second insertion portion further includes a fourth bent portion formed by bending the rod-shaped main body portion between the third bent portion and the other end of the rod-shaped main body portion, the third contact portion is formed closer to the other end of the rod-shaped main body than the fourth bent portion; A connecting fitting comprising:
4. The second bent portion is bent in a direction away from the other end of the rod-shaped main body. The connector according to any one of claims 1 to 3, characterized in that
Citation Information
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