JP2023090798A - Connecting metal fitting - Google Patents

Abstract

To provide a connecting metal fitting that can be easily and firmly connected, for example, when earth retaining members such as a liner plate are connected to each other.SOLUTION: The present invention comprises a plate-shaped connecting bracket body 1, an insertion portion 2 formed by bending one end of the connecting metal fitting body 1 to one side of the connecting metal fitting body 1 in a L shape, and a sandwiching portion 3 formed by bending the other end of the connecting metal fitting body 1 toward the one side in an U shape. The bent portion 2a of the sandwiching portion 3 is formed diagonally with respect to the longitudinal direction of the connecting metal fitting main body 1. When the insertion portion 2 is inserted into the holes formed in overlapped flanges, a tip portion 2a of the insertion portion 2 comes into contact with the lower surface of the peripheral edge of the holes. The overlapped flanges enter the sandwiching portion 3 and are sandwiched by rotating the connecting metal fitting main body 1 around the insertion portion 2 inserted into the hole.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a connecting fitting, and more particularly, to a connecting fitting that can easily and firmly connect earth retaining members having flanges, such as liner plates, to each other.

For example, one of the construction methods of vertical shafts is the liner plate construction method. In the liner plate construction method, a liner plate is suspended in an excavated pit using a crane or the like, and the suspended liner plates are connected to each other to form an earth retaining shoring.

At this time, for example, to vertically connect the liner plates, 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, respectively, and fasten them with nuts.

However, since there are a large number of connecting points using bolts and nuts, it takes a great deal of time and effort to connect the liner plates.

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

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

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

The insertion portion 22 is inserted into a hole 28 formed in the overlapping upper and lower flanges 25, 27 of the upper and lower liner plates 24, 26, and the clamping portion 23 is inserted into the overlapping upper and lower flanges 25, as will be described later. , 27.

In order to connect the upper and lower liner plates 24, 26 with conventional connecting fittings, holes 28 are formed in the lower flange 27 of the upper liner plate 24 and the upper flange 25 of the lower liner plate 26, respectively, as shown in FIG. After that, the connecting metal fitting main body 21 is rotated around the insertion part 22 in the direction of the arrow in FIG. 11 . 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.

Japanese Utility Model Laid-Open No. 3-69093

According to the above-described conventional connecting fitting, the upper liner plate 24 and the lower liner plate 26 are connected by rotating the connecting fitting main body 21 and sandwiching the upper and lower flanges 25 and 27 between the clamping portions 23 . , had the following problems.

Since the insertion portion 22 of the connecting fitting main body 21 is simply inserted into the holes 28 formed in the upper and lower flanges 25 and 27, when a separating force acts between the upper liner plate 24 and the lower liner plate 26, In this case, since only the holding portion 23 prevents 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 arises when the liner plates are connected horizontally.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a connecting fitting that can easily and firmly connect, for example, earth retaining members such as liner plates.

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

According to a first aspect of the present invention, there is provided a connection fitting for mutually connecting earth retaining members or the like having flanges, wherein a plate-like connection fitting main body, an insertion portion formed at one end of the connection fitting main body, and the connection a clamping portion formed by bending the other end of the metal fitting main body toward one side of the connecting metal fitting main body in a U-shape, wherein the bent portion of the clamping portion is bent with respect to the longitudinal direction of the connecting metal fitting body; It is characterized by being formed obliquely.
In addition, a metal fitting according to one embodiment is a connecting fitting for mutually connecting earth retaining members or the like having flanges, in which a plate-like connecting fitting main body and one end of the connecting fitting main body are connected to one surface of the connecting fitting main body. an inserting portion formed by bending an L-shape toward one side; and a clamping portion formed by bending the other end of the connecting fitting main body toward the one side into a U-shape. The bent portion is characterized in that it is obliquely formed with respect to the longitudinal direction of the connecting fitting main body.

According to a second aspect of the present invention, there is provided a connecting method for connecting earth retaining members having flanges to each other. a step of abutting the front end portion of the portion against the back surface of the peripheral edge of the hole; rotating the connecting fitting in the circumferential direction of the hole around the insertion portion inserted into the hole so that the overlapping flanges are aligned with the connecting fitting; It is characterized in that it has a step of entering the holding portion of and holding it.
Further, in the invention according to one embodiment, when the insertion portion is inserted into a hole formed in the overlapping flanges, the distal end portion of the insertion portion abuts on the peripheral rear surface of the hole, The flange is characterized in that it enters and is clamped by the clamping part by rotating the connecting fitting body about the insertion part inserted into the hole.

The invention according to claim 3 is characterized in that, in the invention according to claim 2, the connecting metal fitting is the connecting metal fitting according to claim 12.
Moreover, the invention according to one embodiment is characterized in that the tip portion of the insertion portion is formed to have an upward slope.

Moreover, the invention according to one embodiment is characterized in that the opening width of the inlet of the clamping portion is formed narrower than the plate thickness of the overlapping flanges.

Moreover, the invention according to one embodiment is characterized in that the entrance edge portion of the clamping portion is widened.

Moreover, the invention according to one embodiment is characterized in that the width of the clamping portion is formed wider than the width of the insertion portion.

Moreover, the invention according to one embodiment is characterized in that a reinforcing portion is formed in the connecting fitting main body.

Moreover, the invention according to one embodiment is characterized in that the earth retaining members and the like are vertically connected.

Moreover, the invention according to one embodiment is characterized in that the earth retaining members and the like are connected to the left and right.

Moreover, the invention according to one embodiment is characterized in that the earth retaining member is made of a liner plate.

According to this invention, earth retaining members and the like can be connected to each other simply by inserting the inserting portion of the connecting metal fitting main body into the hole formed in the overlapping flanges and then rotating the connecting metal main body. Mutual connection of earth retaining members, etc. can be performed easily and in a short time compared to bolts and nuts.

In addition, according to the present invention, by providing an insertion portion at one end of the connecting metal fitting body, the tip portion of which contacts the back surface of the peripheral edge of the hole formed in the overlapping flanges, the earth retaining member or the like that is connected is separated. In the event of an action, the clamping portion and the insertion portion can prevent separation, so that the mutual connection force of the earth retaining members and the like is strengthened.

Further, according to the present invention, by forming the leading end of the insertion portion to be inclined upwardly, when the insertion portion is inserted into the hole and the overlapping flanges are sandwiched between the clamping portions, the overlapping flanges are separated by the principle of leverage. The connection force can be made stronger.

Further, according to the present invention, the bent portion of the clamping portion is formed obliquely with respect to the longitudinal direction of the connecting fitting main body. As a result of the overlapped edges of the flanges becoming parallel, the clamping force is increased and the amount of protrusion of the connecting metal fitting main body toward the inside of the liner plate when the connecting metal main body is rotated can be reduced. It is possible to reduce the risk of interfering with work.

Further, according to the present invention, by forming the opening width of the inlet of the clamping portion to be narrower than the plate thickness of the overlapping flanges, the overlapping flanges can be clamped more firmly.

Further, according to the present invention, by widening the entrance edge of the clamping portion, the overlapped flanges can be smoothly inserted into the clamping portion.

Further, according to the present invention, by making the width of the holding portion wider than the width of the insertion portion, the overlapped flanges can be held more firmly.

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

According to this invention, earth retaining members and the like can be connected vertically and horizontally.

FIG. 2 is a perspective view showing a connecting fitting of the present invention; FIG. 2 is a front view showing a connecting fitting of the present invention; FIG. 4 is a rear view showing the connecting fitting of the present invention; FIG. 4 is a plan view showing a connecting fitting of the present invention; It is a bottom view which shows the connection metal fittings of this invention. It is a left view which shows the connection metal fitting of this invention. FIG. 4 is a right side view showing the connecting fitting of the present invention; FIG. 4 is a partial perspective view showing liner plates connected by the connecting fittings of the present invention; FIG. 4 is a perspective view showing another connecting fitting of the present invention; It is a perspective view showing a conventional connecting fitting. FIG. 5 is a partial perspective view showing liner plates connected by conventional connecting fittings.

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

1 is a perspective view showing a 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. 5 is a bottom view showing the connecting metal fitting of the present invention, FIG. 6 is a left side view showing the connecting metal fitting of the present invention, and FIG. 7 is a right side view showing the connecting metal fitting of the present invention. be.

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

In FIGS. 1 to 7, reference numeral 1 denotes a plate-like connecting fitting main body, which has a reinforcing portion 1a formed by, for example, embossing (see FIG. 9). The number and formation positions of the reinforcing portions 1a are not limited to this example.

Reference numeral 2 denotes an insertion portion formed by bending one end of the connecting metal fitting main body 1 toward one surface side (in this example, the lower surface side) of the connecting metal fitting main body 1 in an L shape. The distal end portion 2a of the insertion portion 2 abuts on the peripheral rear surface of the hole 8 when the insertion portion 2 is inserted into the hole 8 formed in the overlapping upper and lower flanges 6 and 4, which will be described later. The peripheral rear surface is the lower surface of the overlapping flanges when the liner plates are vertically connected, and the side surfaces of the overlapping flanges when the liner plates are horizontally connected.

5, by forming the tip portion 2a to be inclined upward, the insertion portion 2 can be inserted into the hole 8, and the clamping portion 3 is provided with upper and lower flanges 6 and 6, as will be described later. 4, the connecting force between the upper and lower flanges 6 and 4 can be strengthened by the principle of leverage.

Reference numeral 3 denotes a clamping portion formed by bending the other end of the connecting metal fitting main body 1 toward one surface side (in this example, the lower surface side) in a U shape. By rotating the connecting fitting main body 1 about the insertion part 2 inserted into the hole 8 formed in the upper and lower flanges 6 and 4, the upper and lower flanges 6 and 4 are overlapped with each other. enters and thus the clamping part 3 clamps the overlapping upper and lower flanges 6,4.

A bent portion 3 a of the clamping portion 3 is formed obliquely with respect to the longitudinal direction of the connecting fitting main body 1 . The reason for this is that if the bent portion 3a is formed obliquely with respect to the longitudinal direction of the connecting fitting main body 1, when the overlapping upper and lower flanges 6 and 4 enter the clamping portion 3, the bent portion 3a will overlap. In addition, since the edges of the lower flanges 6 and 4 are parallel to each other, the clamping force is increased and the amount of protrusion of the metal fitting body 1 toward the inside of the liner plate when the metal fitting body 1 is rotated is reduced. This is because, as a result, it is possible to reduce the possibility of hindrance to work.

Further, the opening width L1 (see FIG. 4) of the entrance of the clamping portion 3 is formed narrower than the plate thickness of the upper and lower flanges 6 and 4 which overlap each other. As a result, the overlapping upper and lower flanges 6 and 4 can be held more firmly.

In addition, the entrance edge portion 3b of the clamping portion 3 is widened. As a result, the overlapping upper and lower flanges 6 and 4 can be smoothly inserted into the holding portion 3 .

Furthermore, as shown in FIG. 2, the width L2 of the holding portion 3 is formed wider than the width L3 of the insertion portion 2. As shown in FIG. As a result, the overlapping upper and lower flanges 6 and 4 can be held more firmly.

According to the connecting fitting of the present invention configured as described above, the upper liner plate 5 having the lower flange 4 and the lower liner plate 7 having the upper flange 6 can be connected to each other in the following manner. can.

First, as shown in FIG. abut on.

Next, the connecting fitting main body 1 is rotated in the direction of arrow A in FIG. This causes the overlapping upper and lower flanges 6 and 4 to enter the clamping portion 3 and thus the clamping portion 3 clamps the overlapping upper and lower flanges 6 and 4 . At this time, since the opening width L1 of the entrance of the clamping portion 3 is narrower than the plate thickness of the overlapping upper and lower flanges 6, 4, the overlapping upper and lower flanges 6, 4 can be clamped more firmly. can. In addition, since the inlet edge 3b of the clamping portion 3 is widened, the overlapped upper and lower flanges 6 and 4 can be inserted into the clamping portion 3 smoothly.

As described above, the upper liner plate 5 and the lower liner plate 7 are vertically connected by the connecting fitting of the present invention.

The above is the case of connecting the liner plates vertically, but as shown in FIG. 8, the same applies to the case of connecting the liner plates horizontally. That is, when connecting the upper liner plates 5 to the left and right, as shown in FIG. The connector main body 1 is rotated in the direction of arrow B in FIG. As a result, the overlapping left and right flanges 9 and 10 enter the clamping portion 3 and are clamped.

In this manner, the upper liner plate 5 can be connected to the left and right by the connecting fittings of the present invention.

As described above, according to the present invention, after inserting the insertion portion 2 of the connecting metal fitting main body 1 into the hole 8 formed in the overlapping upper and lower flanges 6 and 4, the connecting metal main body 1 is rotated. Since the upper and lower liner plates 5 and 7 can be connected to each other simply by pressing the bolts and nuts together, the liner plates can be connected to each other easily and in a short time.

In addition, according to the present invention, by providing the insertion portion 2 at one end of the connecting metal fitting main body 1, the tip portion 2a of which is in contact with the rear surface of the peripheral edge of the hole 8 formed in the overlapping upper and lower flanges 6 and 4, When a separating force acts on the connected upper and lower liner plates 5 and 7, the holding portion 3 and the insertion portion 2 can prevent the separation, so that the connecting force between the liner plates becomes stronger. Become.

Further, according to the present invention, by forming the leading end portion 2a of the insertion portion 2 to be inclined upward, the insertion portion 2 is inserted into the hole 8, and the upper and lower flanges 6 and 4 overlapping the clamping portion 3 are sandwiched. At this time, the principle of leverage makes it possible to strengthen the connecting force between the overlapping upper and lower flanges 6 and 4 .

Further, according to the present invention, by forming the bent portion 2a of the clamping portion 3 obliquely with respect to the longitudinal direction of the connecting fitting main body 1, the clamping portion 3 has the overlapping upper and lower flanges 6 and 4. When it is inserted, the bent portion 2a of the holding portion 3 and the edges of the overlapping upper and lower flanges 6 and 4 become parallel, so that the holding force is increased and the connecting fitting main body 1 is rotated. It is possible to reduce the amount of protrusion of the connecting fitting main body 1 toward the inner side of the upper and lower liner plates 5 and 7, and as a result, it is possible to reduce the possibility of interfering with the work.

Further, according to the present invention, since the opening width L1 of the entrance of the clamping portion 3 is narrower than the plate thickness of the overlapping upper and lower flanges 6, 4, the overlapping upper and lower flanges 6, 4 are made more rigid. can be sandwiched between

Further, according to the present invention, the overlapping upper and lower flanges 6 and 4 can be more smoothly inserted into the clamping portion 3 by widening the inlet edge portion 3b of the clamping portion 3. As shown in FIG.

Further, according to the present invention, the overlapping upper and lower flanges 6 and 4 can be held more firmly by making the width L2 of the holding portion 3 wider than the width L3 of the insertion portion.

Further, according to the present invention, even when the liner plates are connected horizontally, the same effect as when the liner plates are connected vertically can be obtained.

As described above, the connecting fitting of the present invention can of course be used for connecting earth retaining members having flanges other than liner plates.

1: Connection fitting body 2: Insertion part 2a: Tip part 3: Clamping part 3a: Bent part 3b: Inlet edge part 4: Lower flange 5: Upper liner plate 6: Upper flange 7: Lower liner plate 8: Hole 9: Left flange 10: Right flange 11: Hole 21: Connection fitting body 22: Insertion part 23: Clamping part 24: Upper liner plate 25: Upper flange 26: Lower liner plate 27: Lower flange 28: Hole L1: Entrance of clamping part Opening width L2: Width of clamping part L3: Width of insertion part

Claims (3)

In connection metal fittings for connecting earth retaining members with flanges to each other,
It is formed by bending a plate-shaped connecting fitting main body, an insertion portion formed at one end of the connecting fitting main body, and the other end of the connecting fitting main body toward one side of the connecting fitting main body in a U shape. and a holding portion, wherein the bent portion of the holding portion is formed obliquely with respect to the longitudinal direction of the main body of the connecting member. A connection method for connecting earth retaining members, etc. having flanges, comprising:
a step of inserting an insertion portion of a connecting fitting into a hole formed in the flanges overlapping each other, and bringing a tip end portion of the insertion portion into contact with a peripheral rear surface of the hole;
and a step of rotating the connecting fitting in the circumferential direction of the hole around the insertion portion inserted into the hole, so that the overlapping flanges enter and clamp the clamping portion of the connecting fitting. Consolidation method. 3. The connecting method according to claim 2, wherein the connecting metal fitting is the connecting metal fitting according to claim 1.

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