JPS6013861Y2 - Connecting fittings for expanded metal assembly - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connecting fitting for assembling expanded metal used, for example, in a simple steel earth retaining wall.

Conventionally, simple steel retaining walls have been known that can be constructed by simply interlocking lightweight units made of expanded metal into an L-shape and filling them with local earth and sand as filling material.

At this time, it is necessary to stack the upper layer of expanded metal so that it crosses the top of the lower layer of expanded metal.
Traditionally, these intersections were tied together with wire.

However, passing wires through the intersections of expanded metal, pulling out both ends, and tying them together is not only time-consuming and inefficient, but also causes the wires to break if a large force is applied to the joints of the wires. There was a risk of amputation.

Therefore, as shown in Fig. 1, it has been proposed that an abbreviated angle plate 2 is inserted into a hook bolt 1 having a threaded portion at the upper end, and is tightened with a nut 3 to connect the intersection parts of the expanded metal. However, in this case, in order to tighten two meshes of expanded band metal,
There were drawbacks such as the intersection part being easily misaligned, the manufacturing cost being high, and tightening the nuts taking a long time.

The present invention was developed in view of the above-mentioned drawbacks, and its purpose is to reliably prevent misalignment by bonding the bond parts of expanded metals that intersect with each other, and to
To provide a connecting fitting for expanding metal assembly which is inexpensive and allows quick assembly work.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.

FIG. 2 shows a leg fitting 10 constituting a connecting fitting according to the present invention.
This leg fitting 10 is made of a single round bar, and has a central leg 12 formed in a substantially square shape, and both ends thereof are folded back toward one side to form a U-shape to form a folded part 11.
In addition, the distal end side of the central leg portion 12 is slightly bent toward the folded portion 11 side.

FIG. 3 shows a wedge member 20 made of a plate. This wedge member 20 is formed so that it gradually becomes wider from one end to the other, and can be freely inserted into the folded part 11 of the metal fitting 10. In this state, as shown in FIGS. 4 and 5, the side edge of the wedge member 20 is engaged with the folded portion 11 and leg portion 12 of the leg fitting 10, and the wedge member 20 can be handled as a unit.

Assembling expanded metal using the leg fittings 10 and the wedge member 20 is performed as shown in FIG.

That is, when the upper expanded metal 31 is placed on the lower expanded metal 30, the bond portions 30at31a of both expanded metals 30 and 31 are recessed in a ■ shape, so that the bond portions 30a and 31a intersect. Stable bonding in this condition.

The leg fittings 10 are inserted from the sides into both the upper and lower sides of this bond portion 30at31a, and the wedge members 20 are inserted into the folded portions 11 of the leg fittings 10 that protrude to the opposite side.

As a result, the inner surface of the center leg portion 12 of the leg fitting 10 and one side surface of the wedge member 20 are crimped to both sides of the bond portions 30a, 31a, and the intersection portions of the bond portions 30a, 31a are completely joined, and the middle Even if the expand band metal 30, 31 shakes when filling with the filling material, the wedge member 20 will not hold the leg 1 because the leg 12 is bent toward the folded part 11.
Since it is locked at the rising portion 12a of No. 2, it can be completely tightened without falling outward.

For example, when the central leg part 12 of the leg fitting 10 is formed into a U-shape, if the interval between the legs is wider than the bond parts 30a and 31a, even if the wedge member 20 is inserted, the leg fitting
There is a risk that the wedge member 20 will move relative to the bond portions 30a, 31a and the wedge member 20 may become loose.

On the other hand, if the leg portion 12 is formed into a substantially square shape as in the present invention, the narrow tip side of the leg portion 12 is the bond portion 30at31a.
There is no need to worry about the wedge member 20 becoming loose due to biting into it.

In addition, in the present invention, the central leg portion 12 of the leg fitting 10 is approximately ■-shaped, but this also includes a shape approximating a U-shape or a semicircular arc shape, and in this case, the same be effective.

As described above, according to the present invention, bond parts that intersect with each other are directly connected by a leg fitting having a substantially square leg part and a U-shaped folded part, and a wedge member.
The position of the intersection does not shift as in the case of using a conventional hook bolt and angle plate.

Furthermore, the leg fittings can be made by bending a round bar, for example, and the wedge members can be made by punching, for example, a thin steel plate, so complicated machining is not required and the cost is low.

Furthermore, when assembling the expanded metal, all you have to do is insert the leg fittings into the intersections of the bond parts and insert the wedge members into the folded parts of the leg fittings, making the assembly process easier and faster. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional connecting fitting, Fig. 2 and the following show the present invention. Fig. 2 is a perspective view of a leg fitting, Fig. 3 is a perspective view of a wedge member, and Figs. 4 and 5 are FIG. 6 is a front view and a plan view of the combination of the leg fittings and the wedge member, and FIG. 6 is a perspective view of the expanded band metal assembled using the connecting fittings according to the present invention. 10...Leg fittings, 11...Folded parts, 12...Leg parts, 20...Wedge members, 30, 31...Extracts band metal, 30a
, 31a... Bond part.

Claims (2)

[Scope of utility model registration request] (1) In a connecting fitting that intersects and connects the bond parts of two expanded metals, the central leg part is formed in an approximately ■ shape, and one side is folded back in a U shape at both ends. A connecting fitting for assembling expanded metal, comprising a leg fitting formed with a folded-back part, and a wedge member inserted into the folded-back part with the leg fitting inserted into the intersection of both bond parts. (2) The connecting fitting for expanding metal assembly according to claim 1, wherein the central leg is slightly bent at its distal end toward the folded portion.