JPH0372788B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a metal fitting used for securing a rope to a pole.

Windbreak nets, snow protection nets, etc. are arranged by arranging poles in a row at predetermined positions, fixing rope anchoring devices to these poles, and then attaching ropes, wires, etc. that are the constituent parts of the net to these metal fittings. This is done by attaching reinforcing or tensioning ropes or wires (in the following description and claims, these are collectively referred to as "ropes").

BACKGROUND OF THE INVENTION Conventional metal fittings used for such purposes are made up of a band of metal plates formed into a split annular shape and having flanges facing each other at both ends of the split ring. To attach this to a pole, the split annular body of the metal fitting is fitted onto the pole, and the opposing flanges are secured with bolts and nuts through the bolt holes provided therein. Fastening with bolts and nuts has poor workability. In other words, in order to fasten bolts and nuts, it is necessary to align the bolt holes on both flanges and insert the bolts into them. In addition to this, it requires a large amount of labor and has become a serious problem in labor management.

Problems to be Solved by the Invention Therefore, the inventor of the present invention came up with the idea of tightening the flanges at both ends of the split ring-shaped metal fitting body using wedges, and conducted repeated research to realize this, but in the process, the following problem was encountered. .

In order to wedge the flanges at both ends of the split annular body of the metal fitting, not only the wedge but also a wedge plywood with a wedge hole into which the wedge is driven is required. In order to make this wedge plywood easier to manufacture and lower costs,
It is desirable that the wall be as thin as possible within the range that can withstand driving of a wedge. However, if the wedge plywood with wedge holes is thin, the wedge is likely to wobble during driving, especially at the beginning of driving. Therefore, in order to realize the above-mentioned idea with a purpose, solving the problem of wedge wobbling came up as a new issue.

This point is the problem we are trying to solve.

The object of the invention is therefore to ensure that it is possible to apply wedge plywood with the thinnest possible thickness without the problem of wobbling, and to embody the abovementioned idea in a purposeful manner.

Means for Solving the Problems The object of the present invention is to provide an incomplete annular belt-shaped main body portion provided with rope anchoring projecting pieces and with leg pieces extending from both end sides so as to face each other; a wedge plywood board with a wedge hole attached to one of the leg pieces so as to protrude toward one side of the other leg piece and inserted into an insertion hole provided in the other leg piece; a wedge piece that is driven into the wedge hole of the wedge plywood, and the other leg piece is attached to one of the leg pieces at a position outward from the wedge plywood and the insertion hole so as to provide a gap between the two leg pieces. This is achieved by a rope anchorage characterized by a protruding back plate that can come into contact with the rope.

The metal fitting of the present invention is fitted into the pole from the end of the pole, or fitted into the pole with both leg pieces open, and has a wedge hole attached to one leg so as to protrude to one side of the other leg. The attached wedge plywood can be fixed to the pole by passing it through the insertion hole of the other leg piece and driving the wedge piece into the wedge hole protruding outside the insertion hole. In this case, a gap is maintained between the two leg pieces by the back plate, and the wedge piece is driven in with the back plate position as a fulcrum, the wedge piece position as a point of force, and the ends of the incomplete annular main body as points of action. The more the pole is driven into the main body, the more the pole is tightened to the main body.

That is, by driving the wedge pieces, both leg pieces are forcibly bent in the direction of approaching each other at the wedge pieces, and the restoring force automatically contributes to preventing the wedge pieces from loosening. Moreover, the restoring force of the bent leg pieces prevents the wedge piece from loosening, which means that even if the wedge plywood is thin, the restoring force will prevent the wedge piece from loosening from the time the wedge piece is driven into the wedge hole of the plate. This will also prevent the pieces from wobbling. In other words, the back plate not only strengthens the attachment of the metal fitting of the present invention to the pole as described above, but also contributes to avoiding wobbling when driving the wedge piece.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of the metal fitting, which includes a main body part 10 and a wedge part 20. As shown in FIG.

The main body part 10 is formed from a single metal band-shaped rectangular plate by sheet metal processing, and includes leg pieces 11 - incomplete annular main body part 12 - leg pieces 13 - back plate 1
It has 4.

One of the leg pieces 11 has a locking piece 14 protruding from the front end side M of the back plate 14, which will be described later, near its tip.
A locking hole 11a is drilled into which the wedge part a is fitted, and a wedge plywood 2 of a wedge part 20, which will be described later, is provided in the center.
An insertion hole 11b into which the two tip ends are fitted is bored. Of course, although not shown, there is a locking piece 14 on the back plate.
If a is not provided, the locking hole 11a is unnecessary.

The inner diameter of the incomplete annular main body portion 12 is approximately equal to the outer diameter of the attached pole P, and the term “incomplete annular” refers to the end pieces K and K′, that is, the leg pieces 11 and 13.
This is because a distance l is provided between the sides that are continuously bent. In practice, the distance l is suitably less than 1/4 circle of the ring forming the main body.

In addition, as shown in FIG. 2, the main body portion 12 has rope anchoring protrusions 16 cut and raised at three locations in the orthogonal diametrical direction at approximately 90° intervals. The protrusions may be provided one at each of the three locations, but as shown in the figure, it is preferable to provide a pair of protrusions 16a bent upward and protrusions 16 bent downward. In this way, the rope will not easily come off when the rope is attached, making it easier to attach the rope. However, the attached pole P is thin,
Therefore, when the main body portion 10 is also small, the protrusions 16 do not need to be paired. In addition, there may be cases where it is not possible to cut and raise the wound in three places. In such a case, the protrusions may naturally be provided at one or two locations as appropriate.

One of the leg pieces 13 has a fixing protrusion 13a cut and raised in the center thereof for fixing the fixing plate 21 of the wedge component 20, and extends from the front end side L of the leg piece 13 in a perpendicular direction. A back plate 14 is extended.
If there is room to cut and raise the rope anchoring protrusion 15 on this back plate as well, it is preferable to cut and raise it.

The width of the back plate 14 is, in principle, equal to the distance 1, and the front end M thereof is provided with the above-mentioned locking piece 14a as required. Therefore, when this locking piece portion 14a is locked to the locking portion 11a of the other leg piece, the front end side M of the back plate is connected to the other leg piece 1.
The leg pieces 11 and 13 are opposed to each other substantially parallel to each other with a distance 1 between them.

The locking piece 14a is not necessarily required, but if provided, it may be cut out or a separate plate-like or rod-like piece welded to the back plate. The locking hole for fitting the locking piece provided in the other leg piece 11 may be a hole 11a with a surrounding wall as shown in the figure, or a simple cut-shaped hole with a part of the surrounding wall open.

The wedge component 20 is manufactured by cutting a metal plate and bending the fixing plate 21 and the wedge plywood 22 into a T-shape as shown in the first figure. A wedge hole 22a is bored at the tip of the wedge plywood.

In the wedge component 20, the wedge plywood 22 is inserted through the cut-out hole 13b of the fastening protrusion 13a of one leg piece 13, and the tip thereof is inserted into the wedge plywood insertion hole 11b provided on the other leg piece 11. After inserting the fixing plate 21 into contact with one leg piece 13, the fixing protrusion 13a
It is fixed to the leg piece 13 by hammering. In the illustrated embodiment, the wedge hole 22a faces the outside of the other leg 11 in the fixed state. As shown in the figure, the wedge piece 23 is a tapered rod-like plate, and the lower end is of a thickness that easily fits into the wedge hole 22a, but the upper end does not. In order to make it easier to insert into the wedge hole 22a and to prevent it from falling out after impact, the lower end of one side is formed as a steeply sloped part 23b.
It is preferable that the upper end side is a gently sloped portion 23a.

In the above embodiment, the wedge component 20 is fixed to one leg 13, but it is obvious that the wedge component 20 may be fixed to the other leg 11.

Further, a locking piece portion 14a is provided in the back plate 14,
Locking this in the other locking hole 11a may be difficult during the installation operation if the material used for the main body part 10 has low mechanical strength or if the main body part 12 has a too large diameter and is easily bent. Although it is desirable for ease of rolling, it is made of steel plate or stainless steel and has a width.
These locking structures are not necessarily required when a band-shaped body of approximately 40 mm and a thickness of 2 mm is used and the main body diameter is approximately several tens of millimeters or less.

To attach the above-mentioned metal fittings to a pole, either insert the main body 12 from one end of the pole P and bring it to the specified position, or push out both leg pieces and fit the main body 12 onto the pole, and then press both legs together. At that time, if the locking piece 14a and the locking hole 11a are provided, they are engaged and locked, and the wedge hole 22a facing the outside of the leg piece 11 is closed.
This is fixed to the pole P by inserting the wedge piece 23 and hitting its head with a hammer. Once this is done, attach the ropes that make up windbreaks, sandproof nets, etc., or if it is a pole for greenhouse horticulture, the wire or rope that guides the branches of the plants that should be attached to it, and attach the metal fittings to the rope anchoring protrusions 16, 15. After adjusting the tension by pulling the rope on the rope, the protrusion is struck to fix the rope to the main body 12 and the back plate 14.

The state in which the metal fitting of the present invention is attached to a pole is shown in FIG. Immediately insert the wedge piece 23 into the wedge hole 22.
By driving the leg pieces 11 and 13 closer together, the tip side M of the back plate abuts the other leg piece 13 at right angles inside the tip part, so the tips of both the leg pieces 11 and 13 move closer together. The two legs are prevented from approaching each other, and both legs eventually curve in their midsections.

Therefore, by the lever principle that the wedge piece position is the point of effort, the back plate abutting side position is the fulcrum, and the both end sides K and K' of the main body are the points of action, both end sides K,
K′ approaches, that is, pole P
The more you drive in the pole, the more the main body part 12 will tighten the pole, making it possible to securely attach it there.

In addition, if the wedge piece is tapered at the steeply sloped part 23b, and its upper side gradually becomes thicker at the gently sloped side 23a, it can be easily inserted into the wedge hole 22a even if the installation work is done at a high place. Gentle slope part 2
If the attachment is completed at 3a, the wedge piece will be prevented from falling off even if the pole swings due to strong winds or other factors. Of course, wedge fastening has the advantage of being much better in terms of workability than bolt/nut fastening.

Effects of the Invention As described above, according to the present invention, wedge pieces can be stably driven into wedge holes in wedge plywood without wobbling from the beginning of driving, so wedge plywood with wedge holes as thin as possible can be used. , the idea of wedge-tightening can be realized for the purpose of wedge-tightening the opposing leg pieces at both ends of the incomplete ring-shaped band-shaped main body. Furthermore, since the back plate, which contributes to making the attachment of the metal fittings firmer, is effective in avoiding wobbling of the wedge pieces, this can be easily avoided.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a metal fitting according to an embodiment of the present invention;
The figure is an explanatory diagram of a state in which the metal fittings shown in FIG. 1 are attached to a pole. 10...Main part, 11...Leg piece, 11a...
Locking hole, 11b... Wedge plywood insertion hole, 12... Incomplete annular belt-shaped main body, 13... Leg piece, 13a...
Fastening protrusion, 14...back plate, 14a...locking piece,
15, 16, 16a, 16b... rope mooring protrusion,
20...Wedge part, 21...Fixing plate, 22...
Wedge plywood, 22a...Wedge hole, 23...Wedge piece, K, K'...End of main body, L...Front edge of one leg, M...Front edge of back plate, 1a, 1c...Legs Piece, 1b...Annular main body part, 2...Bolt nut.

Claims (1)

[Scope of Claims] 1. An incomplete annular belt-shaped main body portion provided with a rope anchoring protrusion and having leg pieces extending from both end sides so as to face each other, and one of the opposing leg pieces having the other. a wedge plywood board with a wedge hole attached to one side of the leg so as to protrude and inserted into an insertion hole provided in the other leg piece;
a wedge piece that is driven into the wedge hole of the wedge plywood that is passed through the insertion hole; A rope mooring metal fitting characterized by having a protruding back plate that can come into contact with the other leg piece so as to provide space between the two legs. 2. A patent in which the leg piece against which the back plate abuts has a locking hole at a position corresponding to the back plate, and the back plate has a locking piece portion that engages with the locking hole. A metal fitting according to claim 1. 3. The metal fitting according to claim 1 or 2, wherein the wedge piece has a tapered gently sloped part and a steeply sloped part continuing from the tapered gently sloped part. 4. Claim 1, wherein the rope anchoring protrusions are formed in pairs by cutting and raising the main body, and the protrusions of each pair are vertically opposed to each other. The metal fittings described in paragraph 2 or 3. 5. The metal fitting according to any one of claims 1 to 4, wherein the back plate is provided with a rope anchoring protrusion. 6. The metal fitting according to claim 5, wherein the rope anchoring protrusions are arranged around the metal fitting at approximately 90° intervals.