JP7037154B2 - Connecting bracket - Google Patents

Description

The present invention relates to a connecting metal fitting, particularly a connecting metal fitting that can be easily and firmly connected to each other when retaining members having a flange such as a liner plate are connected to each other.

For example, there is a liner plate method as one of the methods for constructing a shaft. The liner plate construction method is a construction method in which a liner plate is suspended in an excavated mine by a crane or the like, and the suspended liner plates are connected to each other to form a soil retaining support.

At this time, for example, in order to connect the liner plates vertically, it is common to pass bolts through holes formed in the lower flange of the upper liner plate and the upper flange of the lower liner plate, and fasten them with nuts.

However, since there are many connecting points with bolts and nuts, it takes a lot of time and effort to connect the liner plates.

Therefore, Patent Document 1 discloses a connecting metal fitting for a liner plate for solving the above problem. Hereinafter, the connecting metal fitting for the liner plate is referred to as a conventional connecting metal fitting, and will be described with reference to the drawings.

FIG. 10 is a perspective view showing a conventional connecting metal fitting, and FIG. 11 is a partial perspective view showing a liner plate connected by the conventional connecting metal fitting.

As shown in FIG. 10, the conventional connecting metal fitting is composed of a connecting metal fitting main body 21, an insertion portion 22 formed at one end of the connecting metal fitting main body 21, and a holding portion 23 formed at the other end of the connecting metal fitting main body 21. Has been done.

As will be described later, the insertion portion 22 is inserted into the holes 28 formed in the upper and lower flanges 25 and 27 on which the upper and lower liner plates 24 and 26 overlap, and the sandwiching portion 23 overlaps the upper and lower flanges 25. , 27 is sandwiched.

In order to connect the upper and lower liner plates 24 and 26 with the conventional connecting metal fittings, as shown in FIG. 11, the holes 28 formed in the lower flange 27 of the upper liner plate 24 and the upper flange 25 of the lower liner plate 26, respectively. The insertion portion 22 of the connection fitting main body 21 is inserted into the connection fitting main body 21, and then the connection fitting main body 21 is rotated around the insertion portion 22 in the direction of the arrow in FIG. As a result, the upper and lower flanges 25 and 27 are sandwiched between the holding portions 23, and the upper liner plate 24 and the lower liner plate 26 are connected to each other.

Jikkenhei 3-69093 Gazette

According to the above-mentioned conventional connecting metal fitting, the upper liner plate 24 and the lower liner plate 26 are connected to each other by rotating the connecting metal fitting main body 21 and sandwiching the upper and lower flanges 25 and 27 in the holding portion 23. However, there were the following problems.

Since the insertion portion 22 of the connecting metal fitting body 21 is only inserted into the holes 28 formed in the upper and lower flanges 25 and 27, when a pulling force acts between the upper liner plate 24 and the lower liner plate 26. Since the holding portion 23 only prevents the separation, a strong connecting force between the upper liner plate 24 and the lower liner plate 26 cannot be obtained.

The above is the case where the liner plates are connected vertically, but the same problem occurs when the liner plates are connected left and right.

Therefore, an object of the present invention is to provide a connecting metal fitting that can be easily and firmly connected, for example, when connecting an earth retaining member having a flange such as a liner plate.

The present invention has been made to achieve the above object and is characterized by the following.

The invention according to claim 1 is a connecting metal fitting for connecting a retaining member or the like having a flange to each other, from the connecting metal fitting main body and the upper and lower jaw portions formed outward at one end of the connecting metal fitting main body. It is characterized by having a hook portion thereof and a holding portion formed by a slit extending toward the hook portion at the lower portion of the connecting metal fitting main body.

The invention according to claim 2 is the invention according to claim 1, wherein the hook portion engages with the edge portion of a hole formed in the overlapping flange, and the overlapped flange is attached to the edge portion. It is characterized in that by rotating the connecting metal fitting body around the engaged hook portion, it enters the sandwiching portion and is sandwiched.

The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the lower jaw portion of the hook portion is formed so as to be inclined upward toward the tip end.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the sandwiching portion is formed continuously narrowly toward the other end of the connecting metal fitting body. It is particularly characteristic.

The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein a guide portion is provided on the lower edge side portion of the holding portion on the rotation direction side of the connecting metal fitting body. It is characterized by being.

The invention according to claim 6 is characterized in that, in the invention according to any one of claims 1 to 5, the other end of the connecting metal fitting body is bent in the rotation direction side of the connecting metal fitting body. It has.

The invention according to claim 7 is characterized in that, in the invention according to any one of claims 1 to 6, a reinforcing rib is formed on the connecting metal fitting main body.

The invention according to claim 8 is the invention according to any one of claims 1 to 7, characterized in that the earth retaining member or the like is connected vertically.

The invention according to claim 9 is the invention according to any one of claims 1 to 7, characterized in that the earth retaining member or the like is connected to the left and right.

The invention according to claim 10 is characterized in that, in the invention according to any one of claims 1 to 9, the earth retaining member is made of a liner plate.

According to the present invention, after engaging the hook portion of the connecting metal fitting body with the edge portion of the hole formed in the overlapping flange, the retaining member or the like is connected to each other only by rotating the connecting metal fitting body. Therefore, compared to bolts and nuts, mutual connection of earth retaining members and the like can be performed easily and in a short time.

Further, according to the present invention, by providing a hook portion that engages with the edge portion of the hole formed in the overlapping flange at one end of the connecting metal fitting main body, a pulling force acts on the connected earth retaining member or the like. In this case, since the holding portion and the hook portion can be prevented from being separated from each other, the mutual connecting force of the earth retaining member or the like becomes stronger.

Further, according to the present invention, the lower jaw portion of the hook portion consisting of the upper and lower jaw portions is formed so as to be inclined upward toward the tip, so that the hook portion is inserted into the hole and the flange overlapping the holding portion is sandwiched. At the same time, due to the principle of the lever, the connecting force of the overlapping flanges becomes stronger.

Further, according to the present invention, by forming the holding portion continuously narrowly toward the other end of the connecting metal fitting body, the holding portion and the overlapping flange are brought into close contact with each other, so that the overlapping flange is made stronger. Can be pinched.

Further, according to the present invention, by providing the guide portion on the lower edge side portion of the holding portion on the rotation direction side of the connecting metal fitting body, the overlapped flanges can be more smoothly inserted into the holding portion.

Further, according to the present invention, by bending the other end of the connecting metal fitting body toward the rotation direction side of the connecting metal fitting body, the connecting metal fitting body protrudes inward such as an earth retaining member when the connecting metal fitting body is rotated. Since the amount can be reduced, it is possible to reduce the risk of interfering with the work.

Further, according to the present invention, the strength of the connecting metal fitting body can be increased by forming the reinforcing ribs on the connecting metal fitting body.

Further, according to the present invention, the earth retaining member or the like can be connected vertically and horizontally.

It is a perspective view which shows the connecting metal fitting of this invention. It is a front view which shows the connecting metal fitting of this invention. It is a rear view which shows the connecting metal fitting of this invention. It is a top view which shows the connecting metal fitting of this invention. It is a bottom view which shows the connecting metal fitting of this invention. It is a left side view which shows the connecting metal fitting of this invention. It is a right side view which shows the connecting metal fitting of this invention. It is a partial perspective view which shows the liner plate connected by the connecting metal fitting of this invention. It is a partially enlarged view of FIG. It is a perspective view which shows the conventional connecting metal fittings. It is a partial perspective view which shows the liner plate connected by the conventional connecting metal fittings.

An embodiment of the connecting fitting of the present invention will be described with reference to the drawings.

1 is a perspective view showing the connecting metal fitting of the present invention, FIG. 2 is a front view showing the connecting metal fitting of the present invention, FIG. 3 is a rear view showing the connecting metal fitting of the present invention, and FIG. 4 is a connection of the present invention. A plan view showing the metal fittings, FIG. 5 is a bottom view showing the connecting metal fittings of the present invention, FIG. 6 is a left side view showing the connecting metal fittings of the present invention, and FIG. 7 is a right side view showing the connecting metal fittings of the present invention. be.

Hereinafter, a liner plate as an earth retaining member will be described as an example, but the present invention is not limited to this member.

In FIGS. 1 to 7, reference numeral 1 is a connecting metal fitting body. The other end of the connecting metal fitting body 1, that is, the end portion on the side opposite to the hook portion 2 described later, is bent in the rotation direction side of the connecting metal fitting main body 1. The reason for this is that when the connecting metal fitting body 1 is rotated, the amount of protrusion of the connecting metal fitting body 1 to the inside of the lower liner plates 8 and 10 is reduced, which will be described later, and the possibility of hindering the work is reduced. To do.

Reference numeral 2 is a hook portion composed of upper and lower jaw portions 2a and 2b formed outward at one end of the connecting metal fitting main body 1. The hook portion 2 engages with the edge portion of the hole 11 formed in the lower flanges 9 and 7, which are overlapped and described later. The mandibular portion 2b is formed so as to be inclined toward the tip. That is, as shown in FIG. 2, the opening width L1 at the entrance of the hook portion 2 is formed to be narrower than the opening width L2 at the inner portion of the hook portion 2. As a result, when the hook portion 2 is inserted into the hole 11 and the upper and lower flanges 9 and 7 are sandwiched between the holding portions 3 as described later, the connecting force of the upper and lower flanges 9 and 7 is increased by the principle of the lever. Can be strengthened.

Reference numeral 3 is a holding portion formed by a slit toward the hook portion 2 in the lower portion of the connecting metal fitting main body 1. A space 4 is formed between the hook portion 2 and the sandwiching portion 3 so as not to interfere with the upper flanges 9 and 7 that overlap each other when the connecting metal fitting main body 1 is rotated. By rotating the connecting metal fitting body 1 around the hook portion 2 engaged with the edge portion of the hole 11, the upper and lower flanges 9 and 7 that overlap each other enter into the sandwiching portion 3, and thus the sandwiching portion 3 Holds the lower flanges 9 and 7 on top of each other. The sandwiching portion 3 is formed to be continuously narrowed toward the other end of the connecting metal fitting main body 1. That is, as shown in FIG. 3, the opening width L3 at the entrance of the holding portion 3 is formed wider than the opening width L4 at the inner portion of the holding portion 3. As a result, the upper and lower flanges 9 and 7 that overlap with the sandwiching portion 3 are in close contact with each other, so that the overlapping upper and lower flanges 9 and 7 can be more firmly sandwiched.

Reference numeral 5 is a plate-shaped guide portion provided on the lower edge side portion of the holding portion 3 on the rotation direction side of the connecting metal fitting main body 1. By providing the guide portion 5, the overlapping upper flanges 9 and 7 can be more smoothly inserted into the holding portion.

Reference numeral 6 is a reinforcing rib formed on the connecting metal fitting main body 1. The number, shape, and formation position of the reinforcing ribs 6 are not limited to those shown in the figure.

According to the connecting metal fitting of the present invention configured as described above, the upper liner plate 8 having the lower flange 7 and the lower liner plate 10 having the upper flange 9 can be connected to each other as follows. can.

First, as shown in FIGS. 8 and 9, the hook portion 2 of the connecting metal fitting body 1 is inserted into the holes 11 formed in the upper and lower flanges 9 and 7, which are overlapped with each other, and engaged with the edges of the holes 11. At this time, since the lower jaw portion 2b is formed so as to climb and incline toward the tip, the hook portion 2 is inserted into the hole 11, and the upper and lower flanges 9 and 7 are sandwiched between the holding portions 3 as described later. At the same time, the connecting force of the upper and lower flanges 9 and 7 can be further strengthened by the principle of the lever.

Next, the connecting metal fitting main body 1 is rotated in the direction of arrow A in FIGS. 8 and 9 around the hook portion 2 engaged with the edge portion of the hole 11. As a result, the overlapped upper and lower flanges 9 and 7 enter the sandwiching portion 3, and thus the sandwiching portion 3 sandwiches the overlapped upper and lower flanges 9 and 7. At this time, since the holding portion 3 is continuously formed to be narrow toward the other end of the connecting metal fitting main body 1, it overlaps with the holding portion 3 and is in close contact with the lower flanges 9 and 7, resulting in this. , The upper and lower flanges 9 and 7 can be more firmly sandwiched. Further, since the guide portion 5 is provided on the lower edge side portion of the holding portion 3, the lower flanges 9 and 7 that overlap each other can be smoothly inserted into the holding portion 3.

As described above, the upper liner plate 8 and the lower liner plate 10 are connected to each other by the connecting metal fitting of the present invention.

The above is the case where the liner plates are connected vertically, but the same applies to the case where the liner plates are connected left and right as shown in FIGS. 8 and 9. That is, when connecting the upper liner plates 8 to the left and right, as shown in FIGS. 8 and 9, the hook portion 2 of the connecting metal fitting body 1 is inserted into the holes 14 formed in the overlapping left and right flanges 12 and 13. It is inserted and engaged with the edge portion of the hole 14, and the connecting metal fitting main body 1 is rotated in the direction of arrow B in FIG. 8 with the hook portion 2 as the center. As a result, the overlapped left and right flanges 12 and 13 enter the sandwiching portion 3 and are sandwiched.

In this way, the upper liner plate 8 can be connected to the left and right by the connecting metal fitting of the present invention.

As described above, according to the present invention, the hook portion 2 of the connecting bracket main body 1 is overlapped, and after engaging with the edge portion of the hole 11 formed in the lower flanges 9 and 7, the connecting bracket is used. Since the upper and lower liner plates 8 and 10 can be connected to each other only by rotating the main body 1, the liner plates can be connected to each other easily and in a short time as compared with bolts and nuts.

Further, according to the present invention, the upper and lower liners are provided at one end of the connecting metal fitting main body 1 by providing the hook portion 2 which overlaps and engages with the edge portion of the hole 11 formed in the lower flanges 9 and 7. When the pulling force acts on the plates 8 and 10, the holding portion 3 and the hook portion 2 can prevent the pulling force, so that the connecting force between the liner plates becomes stronger.

Further, according to the present invention, the lower jaw portion 2b of the hook portion 2 composed of the upper and lower jaw portions 2a and 2b is formed so as to be inclined upward toward the tip, whereby the hook portion 2 is inserted into the hole 11 and the holding portion is held. When the upper and lower flanges 9 and 7 are sandwiched between the three, the connecting force of the upper and lower flanges 9 and 7 can be further strengthened by the principle of the lever.

Further, according to the present invention, by forming the holding portion 3 continuously narrowly toward the other end of the connecting metal fitting main body 1, the holding portion 3 overlaps with the holding portion 3 and the lower flanges 9 and 7 are in close contact with each other. Therefore, the lower flanges 9 and 7 can be more firmly sandwiched by the overlapping upper flanges.

Further, according to the present invention, by providing the guide portion 5 on the lower edge side portion of the holding portion 3 on the rotation direction side of the connecting metal fitting main body 1, the upper flanges 9 and 7 are overlapped and the holding portion 3 is more smoothly held. Can be put in.

Further, according to the present invention, by bending the other end of the connecting metal fitting body 1 in the rotation direction side of the connecting metal fitting body 1, the upper and lower liner plates 8 and 10 are formed when the connecting metal fitting body 1 is rotated. Since the amount of protrusion of the connecting metal fitting body 1 inward can be reduced, the possibility of hindering the work can be reduced.

Further, according to the present invention, the strength of the connecting metal fitting main body 1 can be increased by forming the reinforcing rib 6 on the connecting metal fitting main body 1.

Further, according to the present invention, the liner plates can be connected vertically and horizontally.

As described above, it goes without saying that the connecting metal fitting of the present invention can be used for connecting other earth retaining members having a flange other than the liner plate.

1: Connecting bracket body 2: Hook part 2a: Upper jaw part 2b: Lower jaw part 3: Holding part 4: Space 5: Guide part 6: Reinforcing rib 7: Lower flange 8: Upper liner plate 9: Upper flange 10: Lower liner plate 11: Hole 12: Left flange 13: Right flange 14: Hole 21: Connecting bracket body 22: Insertion part 23: Holding part 24: Upper liner plate 25: Upper flange 26: Lower liner plate 27: Lower flange 28: Hole L1: Opening width of the entrance of the hook part L2: Opening width of the inner part of the hook part L3: Opening width of the entrance of the holding part L4: Opening width of the inner part of the holding part

Claims (10)

In the connecting metal fittings for connecting the earth retaining members with flanges to each other,
It is formed by a connecting metal fitting body, a hook portion formed outward at one end of the connecting metal fitting body, which is composed of upper and lower jaw portions, and a slit extending toward the hook portion at the lower portion of the connecting metal fitting body. A connecting bracket characterized by having a holding part. The hook portion engages with the edge portion of the hole formed in the overlapping flange portion, and the overlapping flange portion rotates the connecting metal fitting main body around the hook portion engaged with the edge portion. The connecting metal fitting according to claim 1, wherein the connecting metal fitting enters the holding portion and is sandwiched. The connecting metal fitting according to claim 1 or 2, wherein the lower jaw portion of the hook portion is formed so as to be inclined upward toward the tip end. The connecting metal fitting according to any one of claims 1 to 3, wherein the holding portion is formed continuously narrowly toward the other end of the connecting metal fitting main body. The connecting metal fitting according to any one of claims 1 to 4, wherein a guide portion is provided on the lower edge side portion of the holding portion on the rotation direction side of the connecting metal fitting body. The connecting metal fitting according to any one of claims 1 to 5, wherein the other end of the connecting metal fitting main body is bent in the rotation direction side of the connecting metal fitting main body. The connecting metal fitting according to any one of claims 1 to 6, wherein the connecting metal fitting main body is formed with a reinforcing rib. The connecting metal fitting according to any one of claims 1 to 7, wherein the retaining member or the like is connected vertically. The connecting metal fitting according to any one of claims 1 to 7, wherein the retaining member or the like is connected to the left and right. The connecting metal fitting according to any one of claims 1 to 9, wherein the earth retaining member is made of a liner plate.

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