JPS6183776A - Rope engaging metal fitting - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a metal fitting that is fixed to a ball and used for anchoring a rope.

To install windbreak nets, snow protection nets, etc., balls are lined up in predetermined positions, a rope anchoring device is fixed to the balls, and then the ropes and wires (hereinafter referred to as This is done by attaching a reinforcing or tensioning rope (represented by a net) or an auxiliary reinforcing or tensioning rope.

[Prior art]

The conventional fastening metal fittings used for such work are
As shown in the figure, one strip metal plate (la-1b-1
c), the main body part (1b) has an annular shape with an inner diameter equal to the outer diameter of the ball to which it is attached, and is bent at both ends (K, K'). The extending legs (la, lc) are shaped with the expectation that their opposing surfaces will abut and be bolted to the ball (2). The rope is usually attached to a leg piece or bolt. Some models have protrusions for interlocking, but they are just hook-shaped bodies.

Although such metal fittings are exaggerated in FIG. 3 for ease of understanding, there is inevitably some error in the outer diameter of the ball. Therefore, the conventional metal fittings were made with a thinner ball (P) than planned.
1), as shown in Figure 3 (a), the two bent edges (KeK') come into contact and the main body part (1b) is completely circularized, but what happens after that? Even when the nut is tightened, the gap (S) does not disappear and the metal fitting slips off the ball.

In addition, in the case of a ball (P2) that is thicker than planned, as shown in Figure 3 (b), no matter how hard you tighten it, the bent edges (K, ni') will not come into contact with each other. Rather, Poldona, ) (2)
At the tightening position, both leg pieces are curved, the inner surface of the main body (1b) does not come into close contact with the outer surface of the ball (P2), and the gap (S) does not decrease. After all, even if there is a φ misalignment, it is difficult to install it vertically.

Note that bolt/nut fastening is less workable than expected,
From this point of view, it is desirable to have metal fittings that are easy to install.

[Aim of the present invention]

The present invention has been made to solve the above-mentioned difficulties with the conventional metal fittings, and has a structure in which when both leg pieces are tightened, the end sides (K+x') of the main body part come close to each other but do not come into contact with each other. The aim is to provide metal fittings as an easy-to-work alternative to bolts and nuts.

[Means of problem solving]

Therefore, in the present invention, as shown in FIG. 2, both end sides (K, K') of the main body (12) are
with a distance <g), both leg pieces (11, 13) are made to face each other parallel to each other, and either one of the leg pieces (13)
When the back plate (14) is extended from the tip of the leg and the legs are tightened at their center, the bent edges (K + x') will approach each other by the lever principle using the back plate as a fulcrum, that is,
The incomplete annular body portion tightens the adhered bow A/(P). Furthermore, as a means of attaching metal fittings to the ball, bolts and nuts were no longer used, and instead a wedge method was adopted, which could be completed by driving the ball into place.

〔Example〕

FIG. 1 is a perspective view of an embodiment of such a metal fitting,
The metal fitting of the present invention includes a main body part (10) and a wedge part (20).
).

The main body part (10) is a single metal band-shaped rectangular plate,
The leg piece (11) - the incomplete annular main body part (12) - the leg piece (13) - the back plate (14) are bent by a sheet metal processing method.

The other leg piece (11) has a locking hole (11) near its tip as a locking part for a locking piece (14) cut out to protrude from the tip side (M) of the back plate (14), which will be described later. lla), d;
A wedge part (2), which will be described later, is provided in the center.
An insertion hole (11, 6) is formed at the tip of the plywood plate (22). Of course, although not shown, if the locking piece (14a) is not provided on the back plate, the locking hole (lla)
is not necessary.

The incomplete annular main body (12) has a white path that is connected to the attached ball (
The outer diameter of P) is equal to the outer diameter of P), and is called an incomplete ring because the two sides (K, ni'), which are continuously bent to the leg sides (11, 13), are called incomplete rings. An interval CI> is provided.
This is because that. In practice, the size of the distance <1) is preferably less than a perfect circle of the ring forming the main body.

Further, in the center of the main body (12), as shown in FIG. 2, rope anchoring protrusions (16) are cut and raised at three locations in the orthogonal diametrical direction. There may be one protrusion at each of the three locations, but as shown in the figure, the upwardly bent protrusion (16g) and the downwardly bent protrusion (16b) are paired. It is better to set it as In this way, the rope will not easily come off when the rope is attached, making it easier to attach the N41. However, when the adhered ball (P) is thin and the main body (10) is also small, it is difficult to make pairs of protruding pieces (16), and it may not always be possible to cut out three pieces. arise. 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 back plate (14) bent at the center thereof in the direction of the wedge part. If there is room for cutting and raising the rope anchoring protrusion (15) on this back plate as well, it is advisable to cut and raise it.

The width of the back plate (14) is, in principle, equal to the above-mentioned interval (l), and the front end side (M) is provided with the above-mentioned locking piece (
14a) is cut out. Therefore, when this locking piece (14a) is locked to the locking part (lla) of the other leg piece, the tip side (M) of the back plate is
), and both leg pieces (11, 13) face each other in parallel with an interval (l1).

The locking piece (14a) is not necessarily required, but if it is provided, there is no problem even if it is not cut out and provided. For example, a separate plate-like or rod-like piece may be welded to the back plate. In such a case,
The locking portion (lla) provided on the other leg piece (11) may be a simple notch (not shown) instead of a hole.

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

The wedge part (20) inserts its engagement plate (22) through the cut hole of the fastening protrusion (13m) of one leg piece (13), and inserts its tip into the other leg piece (11). By inserting the fastening plate (21) into contact with one of the leg pieces (13) by inserting the fastening plate (21) into the tip (1) provided in It is fixed to the leg piece (13). In the fixed state, the wedge hole (2 mm) is inserted into the other leg piece (1 mm).
1) r7X death on the outside.

The wedge piece (23) is a tapered rod-like plate as shown in the figure, and of course the lower end side is thick enough to easily fit into the wedge hole (22a), but the upper end side cannot be fully inserted. Wedge hole (22a
), and since the contact will not fall off after hitting, it is better to make the lower end of the - side a steeply sloped part (23b) and the upper end side a gently sloped part (23a).

In addition, in the above embodiment, the wedge part (20) was fixed to one leg piece (11) just in case, but it is clear that there is no problem even if it is fixed to the other leg piece (13). be'.

Further, a locking protrusion (14a) is provided protrudingly on the back plate (14),
The reason for locking this to the other locking part (II) is when the mechanical strength of the material used for the main body part (10) is low and the diameter of the main body part (12) is too large and easily bends. Although it is desirable to install it from the viewpoint of ease of operation, it is preferable to use a strip made of Ibetsu copper plate or stainless steel with a width of 49 m and a thickness of about 211 m, and the diameter of the main body is about several tens of millimeters or less. In some cases, these locking structures are not necessarily required.

〔how to use〕

In order to attach the above-mentioned metal fitting of the present invention to the ball, the main body (12) is inserted from one end of the ball (P) until it reaches a predetermined position, or the main body (12) is pushed out and expanded by both leg pieces.
12) onto the ball to close both pieces, and at that time, if a locking protrusion (14a) and a locking part (lla) are provided, engage them to lock them. Place, leg piece (1
1) into the wedge hole (22a) facing the outside.
23) and secure it to the ball (P) by hitting its head with a hammer. Once that is done, attach the wire or rope that constitutes a windbreak or sandproof net, or if it is a ball for greenhouse horticulture, to guide the ripples of the plants to the rope anchoring protrusion of the metal fitting of the present invention. (16, 15)
After adjusting the tension by hooking the rope onto the rope, the protrusion is struck to fix the rope to the main body (12) and back plate (14).

〔effect〕

A state in which the metal fitting of the present invention is attached to a ball is schematically shown in FIG. 2. That is, the wedge piece (23) is inserted into the wedge hole (22
By driving into a) now, both leg pieces (11°13) will naturally approach each other, but the tip side (M) of the back plate will come into contact with the inside of the tip of the other leg piece (13) in the right angle direction. As a result, the tips of both leg pieces (11, 13) are prevented from approaching, and both leg pieces eventually curve at their central portions.

Therefore, the two end sides (K I K') are brought closer to each other by the principle of levers, where the wedge piece position is the point of effort, the back plate contact side position is the fulcrum, and the main body part both end sides (K s K') are the action points. The more the wedge piece (23) is driven into the 3-1'' reball (P), the more the main body (12) tightens the ball, making it possible to securely attach the ball.

In addition, if the wedge piece is tapered at the steeply sloped part (23A), and the upper side gradually becomes thicker at the gently sloped part (23a), even if the installation work is at a high place, the wedge hole If the ball can be easily inserted into the ball (22a) and the landing ends at the gently sloped part (23a), the wedge piece will be prevented from falling off even if the ball is shaken by strong winds or other factors. Of course, the use of wedges has the advantage of being much better in terms of workability than the use of Poldna 7).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a metal fitting according to an embodiment of the present invention, FIG. 2 is an explanatory view of ball tightening by the metal fitting of the present invention, and FIG. (Both 4 are explanatory views of ball tightening using conventional metal fittings. 10: Main body part, 11: Leg piece, 11a: Locking part, 11b
: Plywood insertion hole, 12: Main body, 13: Leg piece, 13a:
Fastening protrusion, 14: back plate, 14a: locking protrusion, 15,
16 (a, A): protruding piece for attachment, 20: <rust part, 21: fixing plate, 22: plywood, 22a: <wedge hole, 23: wedge piece, ni': end side of main body, L n Front edge of one leg, O: Front edge of back plate Conventional product code: 1m, lc: Leg, 1b
: Annular main body, 2: Bolt nant

Claims (1)

[Scope of Claims] 1) It is belt-shaped with a rope anchoring protrusion (16), and has both end sides (K
. A back plate (14) is protruded from the front edge (L) of which the tip side (M) abuts on the inside of the tip of the other leg (11), and one of the legs has a back plate (14). , the wedge part (20) is fixed by inserting the tip of a plying plate (22) having a wedge hole (22a) into the insertion hole bored in the other leg piece, and the wedge part (20) is fixed in the wedge hole (22a). ) to which the wedge pieces (23) are attached 2) The anchoring protrusions (16) provided on the main body (12) are attached to the upper and lower parts provided by cutting and cutting the main body. Claim 1), which is a pair of projecting pieces (16a, 16b) facing each other in the direction
Metal fitting 3) The wedge piece (23) has a tapered gently sloped part (23a) and a steeply sloped part (23b). 4) The back plate (14) ) has a locking piece (14a) on the tip side (M).
The metal fitting according to claim 1), wherein the other leg piece (11) is provided with a locking part (11a) at a corresponding position.