JP7037138B2 - 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 by rotating the connecting metal fitting main body 21 and sandwiching the upper and lower flanges 25 and 27 in the holding portion 23. , 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 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 having a flange to each other, in which a plate-shaped connecting metal fitting body and one end of the connecting metal fitting body are placed on one side of the connecting metal fitting body. It is provided with an insertion portion formed by bending it into an L shape and a holding portion formed by bending the other end of the connecting metal fitting body into a U shape on one side thereof, and the holding portion is bent. The portion is characterized in that it is formed diagonally with respect to the longitudinal direction of the connecting metal fitting body.

The invention according to claim 2 is the invention according to claim 1, wherein the tip portion of the insertion portion is a peripheral edge of the insertion portion when the insertion portion is inserted into a hole formed in the overlapping flange. The flanges that are in contact with the back surface and overlapped with each other are characterized in that they enter the sandwiching portion and are sandwiched by rotating the connecting metal fitting body around the insertion portion inserted into the hole. Is.

The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the tip portion of the insertion portion is formed in an ascending inclination.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the opening width of the inlet of the sandwiching portion is formed to be narrower than the plate thickness of the overlapping flanges. It has characteristics.

The invention according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, the entrance edge portion of the sandwiching portion is formed to be widened.

The invention according to claim 6 is characterized in that, in the invention according to any one of claims 1 to 5, the width of the sandwiching portion is formed wider than the width of the insertion portion. be.

The invention according to claim 7 is characterized in that, in the invention according to any one of claims 1 to 6, a reinforcing portion 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, the retaining members and the like can be connected to each other only by inserting the insertion portion of the connecting metal fitting body into the hole formed in the overlapping flange and then rotating the connecting metal fitting body. Compared to bolts and nuts, earth retaining members and the like can be connected to each other more easily and in a shorter time.

Further, according to the present invention, by providing an insertion portion at one end of the connecting metal fitting main body in which the tip end abuts on the back surface of the peripheral edge of the hole formed in the overlapping flange, the pulling force is applied to the connected earth retaining member or the like. When the action is applied, the holding portion and the insertion portion can be prevented from being separated from each other, so that the mutual connecting force of the earth retaining member or the like becomes stronger.

Further, according to the present invention, by forming the tip portion of the insertion portion in an ascending inclination, the insertion portion is inserted into the hole, and when the flange overlapping the holding portion is sandwiched, the overlapping flanges are formed according to the principle of the lever. The connecting force can be strengthened.

Further, according to the present invention, by forming the bent portion of the holding portion diagonally with respect to the longitudinal direction of the connecting metal fitting body, when the flange overlapping the holding portion enters, the bent portion of the holding portion is formed. As a result of the overlapping flange edges being parallel to each other, the holding force is increased and the amount of protrusion of the connecting metal fitting body to the inside of the liner plate when the connecting metal fitting 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 sandwiching portion to be narrower than the plate thickness of the overlapping flanges, the overlapping flanges can be sandwiched more firmly.

Further, according to the present invention, by forming the inlet edge portion of the holding portion by widening it, the overlapping flanges can be smoothly inserted into the holding portion.

Further, according to the present invention, by making the width of the sandwiching portion wider than the width of the insertion portion, the overlapping flanges can be sandwiched 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 on the connecting metal fitting main body.

According to the present invention, earth retaining members and 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 perspective view which shows the other connecting metal fittings of this invention. 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 denotes a plate-shaped connecting metal fitting body, and for example, a reinforcing portion 1a is formed by 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 side surface side (lower surface side in this example) of the connecting metal fitting main body 1 in an L shape. The tip portion 2a of the insertion portion 2 comes into contact with the back surface of the peripheral edge of the hole 8 when the insertion portion 2 is inserted into the holes 8 formed in the lower flanges 6 and 4, which are overlapped with each other, which will be described later. The back surface of the peripheral edge is the lower surface of the overlapping flanges when the liner plates are connected vertically, and the side surface of the overlapping flanges when the liner plates are connected left and right.

In FIG. 5, as shown by the alternate long and short dash line, the tip portion 2a is formed to have an ascending inclination so that the insertion portion 2 is inserted into the hole 8, and as will be described later, the upper and lower flanges 6 are inserted into the holding portion 3. When 4 is sandwiched, the connecting force of the upper and lower flanges 6 and 4 can be further strengthened by the principle of the lever.

Reference numeral 3 is a holding portion formed by bending the other end of the connecting metal fitting main body 1 to one surface side (lower surface side in this example) of the connecting metal fitting main body 1 in a U shape. The upper and lower flanges 6 and 4 overlapped with the sandwiching portion 3 by rotating the connecting metal fitting main body 1 around the insertion portion 2 inserted into the holes 8 formed in the upper and lower flanges 6 and 4. Thus, the sandwiching portion 3 overlaps and sandwiches the lower flanges 6 and 4.

The bent portion 3a of the sandwiching portion 3 is formed diagonally with respect to the longitudinal direction of the connecting metal fitting main body 1. The reason for this is that when the bent portion 3a is formed diagonally with respect to the longitudinal direction of the connecting metal fitting body 1, it overlaps with the holding portion 3 and overlaps with the bent portion 3a when the lower flanges 6 and 4 enter. In addition, since the edges of the lower flanges 6 and 4 are parallel to each other, the holding force is increased and the amount of protrusion of the connecting metal fitting body 1 to the inside of the liner plate when the connecting metal fitting body 1 is rotated is reduced. This is because the risk of hindering the work can be reduced as a result.

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

Further, the entrance edge portion 3b of the sandwiching portion 3 is formed to be widened. As a result, the upper flanges 6 and 4 that overlap each other can be smoothly inserted into the holding portion 3.

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

According to the connecting metal 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 as follows. can.

First, as shown in FIG. 8, the insertion portion 2 of the connecting metal fitting main body 1 is inserted into the holes 8 formed in the lower flanges 6 and 4, which are overlapped with each other, and the tip portion 2a of the insertion portion 2 is inserted into the peripheral back surface of the hole 8. To abut.

Next, the connecting metal fitting main body 1 is rotated in the direction of arrow A in FIG. 8 with the insertion portion 2 inserted into the hole 8 as the center. As a result, the overlapped upper and lower flanges 6 and 4 enter the sandwiching portion 3, and thus the sandwiching portion 3 sandwiches the overlapped upper and lower flanges 6 and 4. At this time, the opening width L1 at the entrance of the sandwiching portion 3 is narrower than the plate thickness of the overlapping upper flanges 6 and 4, so that the overlapping upper flanges 6 and 4 can be sandwiched more firmly. can. Further, since the inlet edge portion 3b of the sandwiching portion 3 is formed to be widened, the lower flanges 6 and 4 can be smoothly inserted into the sandwiching portion 3 on the overlapping surface.

As described above, the upper liner plate 5 and the lower liner plate 7 are vertically connected 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 FIG. That is, when connecting the upper liner plates 5 to the left and right, as shown in FIG. 8, the insertion portion 2 of the connecting metal fitting body 1 is inserted into the holes 11 formed in the overlapping left and right flanges 9 and 10. The connecting metal fitting body 1 is rotated in the direction of arrow B in FIG. 8 with the insertion portion 2 inserted into the hole 11 as the center. As a result, the overlapped left and right flanges 9 and 10 enter the sandwiching portion 3 and are sandwiched.

In this way, the upper liner plate 5 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, after the insertion portion 2 of the connecting metal fitting body 1 is inserted into the holes 8 formed in the lower flanges 6 and 4 on the overlapping portion, the connecting metal fitting body 1 is rotated. Since the upper and lower liner plates 5 and 7 can be connected to each other only by making them connect to each other, 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 insertion portion 2 is provided at one end of the connecting metal fitting main body 1 so that the tip portion 2a overlaps and the insertion portion 2 abuts on the back surface of the peripheral edge of the hole 8 formed in the lower flanges 6 and 4. When the pulling force acts on the lower liner plates 5 and 7 after being connected, the holding portion 3 and the insertion portion 2 can prevent the pulling force, so that the connecting force between the liner plates becomes stronger. Become.

Further, according to the present invention, by forming the tip portion 2a of the insertion portion 2 in an ascending inclination, the insertion portion 2 is inserted into the hole 8, overlapped with the holding portion 3, and the lower flanges 6 and 4 are sandwiched. At the same time, according to the principle of the lever, the connecting force of the overlapping upper flanges 6 and 4 can be further strengthened.

Further, according to the present invention, by forming the bent portion 2a of the holding portion 3 diagonally with respect to the longitudinal direction of the connecting metal fitting main body 1, the upper flanges 6 and 4 overlap the holding portion 3 and are formed with the lower flanges 6 and 4. When it enters, the bent portion 2a of the holding portion 3 and the overlapping upper flanges 6 and 4 are parallel to each other, so that the holding force is increased and the connecting metal fitting body 1 is rotated. The amount of protrusion of the connecting metal fitting main body 1 to the inside of the upper and lower liner plates 5 and 7 can be reduced, and as a result, the possibility of hindering the work can be reduced.

Further, according to the present invention, the opening width L1 at the entrance of the sandwiching portion 3 is narrower than the plate thickness of the overlapping upper and lower flanges 6 and 4, so that the overlapping upper and lower flanges 6 and 4 are made stronger. Can be sandwiched between.

Further, according to the present invention, by forming the inlet edge portion 3b of the holding portion 3 by expanding it, the upper flanges 6 and 4 that overlap each other can be more smoothly inserted into the holding portion 3.

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

Further, according to the present invention, when the liner plates are connected to the left and right, the same effect as when the liner plates are connected to the top and bottom can be obtained.

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: Inserting part 2a: Tip part 3: Holding part 3a: Bending 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: 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: At the entrance of the holding part Opening width L2: Width of sandwiching part L3: Width of insertion part

Claims (10)

In the connecting metal fittings for connecting the earth retaining members with flanges to each other,
The plate-shaped connecting metal fitting body, the insertion portion formed by bending one end of the connecting metal fitting body into an L shape on one side of the connecting metal fitting body, and the other end of the connecting metal fitting body are the one side. A connecting fitting having a holding portion formed by bending in a U shape on the side, and the bending portion of the holding portion is formed diagonally with respect to the longitudinal direction of the connecting fitting main body. .. The tip of the insertion portion abuts on the back surface of the peripheral edge of the hole when the insertion portion is inserted into the overlapping hole formed in the flange, and the overlapped flange is inserted into the hole. The connecting fitting according to claim 1, wherein the connecting fitting main body is rotated around the insertion portion to enter the holding portion and be sandwiched. The connecting metal fitting according to claim 1 or 2, wherein the tip portion of the insertion portion is formed in an ascending inclination. The connecting metal fitting according to any one of claims 1 to 3, wherein the opening width of the entrance of the holding portion is formed to be narrower than the plate thickness of the overlapping flanges. The connecting metal fitting according to any one of claims 1 to 4, wherein the entrance edge portion of the holding portion is formed to be widened. The connecting metal fitting according to any one of claims 1 to 5, wherein the width of the sandwiching portion is formed wider than the width of the insertion portion. The connecting metal fitting according to any one of claims 1 to 6, wherein a reinforcing portion is formed on the connecting metal fitting main body. 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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