JPS60208617A - Metal fittings for engaging rope - 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 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 nets, etc., poles are lined up at predetermined positions, anchoring devices are fixed to these poles, and ropes and wires (which are the components of the net) are attached to these metal fittings. This is done by attaching an auxiliary reinforcing or tensioning rope (represented by a rope below).

Conventional fastening metal fittings used for such work include fastening protrusions (2), as shown by reference numeral (1) in FIG.
It consists of a belt-shaped main body (IB) that is cut and raised, and fixed plate parts (IA, IC) that are bent and extended integrally from both ends of the main body (IB). To attach this to the ball, the main body (Ic
) is pressed against the outer surface of the ball to form a ring, and both fixed plate parts (I
A, IC) was brought into contact with the IC), then the POL) (3a) was inserted into the bolt hole provided there, and the POL) (34) was fixed with a washer in the usual manner.

After attachment, the rope is inserted between the protrusion (2) and the main body (mark 1), and is then engaged by the hammer of the protrusion.

One of the drawbacks of this metal fitting is that the mechanical strength of the main body (I B) is likely to be lost due to the pushing and closing of the annular main body, and that the inner diameter of the ring is larger than the outer diameter of the ring. If they do not match, precise installation will be difficult and workability will be poor.

Ideally, when pushed closed, both fixing plate parts (IA, IC) should come into close contact with each other, but it is obvious that such cyclization would be difficult if relying only on human hands. Also, even if it is possible to do so, if the outer diameter of the ball does not perfectly match the inner diameter of the annular metal fitting, for example, if the outer diameter is too small, the metal fitting will easily fall off, and if the outer diameter is too large, the metal fitting will easily fall off. There is only abutment at the tip sides (1d, le), making it difficult to install firmly. Even if it appears to be completely installed, exposure to strong wind and rain may cause it to loosen and cause unwanted slippage.

Next is the bolting operation, which may seem easy to see, but the bolt holes in both fixing plates must be aligned with each other, and hundreds of bolts are installed in a day at high places. When installation is required, it requires a surprising amount of attention and physical labor, which poses a serious problem in terms of labor management.

The present invention has been made to solve the drawbacks of the above-mentioned conventional products, and an example of its implementation will be explained below with reference to the accompanying drawings.

As shown in the first diagram, the metal fittings of the present invention include the instep and six parts (10,
20), consists of four parts: a wedge part (30) and a wedge piece (33), but before attaching it to the ball, the wedge part (30) is attached to the solid plate of one of the first and sixth parts. In that sense, it can be said to be three parts.

The instep and 6 parts (10, 20) both have rope attachment protrusions (2).
) and a fixed plate part (14, 24), with an engaging hole (4, 4) or an engaging part (5) on one end (12, 22) side. , 5). In the figure, the case where the engagement hole is provided in the first part and the engagement part is provided in the second part is shown.

The reason why both parts (10, 20) are band-shaped metal fittings is that they include the fixing plate parts (14, 24) and can be manufactured easily and inexpensively by sheet metal processing, and the main body part (
The reason why 11 and 21) are semi-annular is that most of the parts are in contact with the outer peripheral surface of the attached d-ball under the engagement of the engaging portion described below. The reason that most of the contact is due to the existence of play interval (1), which will be described later. Further, the term "half ring" is not necessarily limited to a semicircle. If the outer circumference of the ball is polygonal, it means that it is an angular half ring that is half of the outer circumference, and it is not necessary that both A and B have the same half ring. In the illustrated case, the upper part has a large circular arc shape, and the O part has a small circular arc shape, but these are, of course, embodiments of the present invention.

The rope attachment protrusion (2) provided on the face wooden body (11, 21)
) are cut and raised into L-shaped strips, but if the cut and raised direction is reversed to form a pair of protrusions, the workability of rope tensioning can be greatly improved. .

An engagement hole (4t 4) drilled on one end (12) side of the instep part
) is an engaging part (
5, 5). The movable locking means that both fixed plate portions (14, 24) are fixed using this engaging portion as a fulcrum.
This means that it can be opened and closed horizontally, but it also includes the ability to move up and down to some extent.

Such acceptance is not only necessary to facilitate the workability of engaging the first and sixth parts, but also makes it easier and cheaper to manufacture these two parts. This is because a high degree of dimensional accuracy is not required.

FIG. 4 shows an engagement hole (with a shape different from that shown in FIG. 1).
4') and the engaging parts (5', 5') are shown,
In this case as well, it can be used as a combination in the same way as in Figure 1.
The six parts are each provided with a fixing plate part (14, 24) as an extension of each main body part from the other end (13, 23). A spacer plate part (15) with a stabilizing piece (16) extending from the tip side (14c) is fixed to the fixing plate part (14) of either A or B, in the figure, the fixing plate part (14) of the part A. Laminated in a direction perpendicular to the plate. The appropriate width (n) of the spacer plate is about 10 ff in the case of a metal fitting used when the outer diameter of the ball is about 30 to 66 m.

Therefore, it is preferable to cut and raise the engagement protrusion (15A) also in this spacer plate portion (15). This spacer plate part (15
) and the role of the stabilizing piece (16) will be described later. Since the fixing plate part (14) is a part that fixes a wedge part (30) which will be described later, this wedge part will be described first.

The wedge part (30) is a part in which a wedge plate part (32) having a wedge hole (32a) and a fixing plate part (31) integrated therewith have a cross-sectional shape including a T-shape. , can be easily manufactured using sheet metal processing techniques. Wedge hole (3
2a) is of course a punched hole with a width equal to the thickness of the wedge piece (33).

Thus, the solid plate part (14) of the A part has a wedge plate part (
32) must be inserted into the insertion hole (L4a). This opening is done by the cutting and raising method as shown in Figures 1 and 3, and the cut piece (14b)
The holding plate part (31) of the wedge part was used for fixing.

The fixing plate part (24) of the Part B part has an insertion hole (24a) through which the wedge over part (32) of the wedge part fixed to the fixing plate part of the Party A is inserted, as described above, and a spacer plate part. An insertion hole C244) for the stabilizing piece (16) extending from the base plate is provided. Of course, the wedge hole (3
2a) is located on the outside of the fixing plate part of Part B.

Preferably, the fixing plate portions on both sides of the wedge hole (32a) are provided with ribs (24c, 24c) for guiding the wedge piece (33) upward and downward.

In order to attach the metal fitting of the present invention having the configuration of each of the above-mentioned parts to the ball, first engage the engaging hole (4) and the engaging part (5) in both the instep and 6 parts as described above. , bring this metal fitting to the specified position of the ball to be attached. Then, as mentioned above, both the first and sixth parts will expand both the fixing plate parts (14, 24) in the horizontal direction using the engaging part as a fulcrum,
In addition, since it can be closed, the engaged face piece (11, 21) can be partially wrapped around the outer circumferential surface of the ball without requiring any special action. In addition, in this state, since both the fixing plate parts (14, 24) are fully movable upward and downward using the engaging part as a fulcrum, the stabilizing plate (14,
6) is inserted into the insertion hole (24A) so that the front end side (15b) of the spacing plate part comes into contact with the other fixing plate part (24).

Then, the double-sided plates (14, 24) are replaced by the spacer plate (15).
) No. 13 (1), ψ are parallel to each other and do not swing up or down. Therefore, if necessary, the stabilizing piece (16
), a wedge piece is inserted into the wedge hole (32a) of the wedge plate part (32) that protrudes from the outer surface of the other fixed plate part (24) and appears on the outer surface of the fixed plate part (24). (33) has been sufficiently driven in to complete the attachment of the metal fitting of the present invention to the ball.

Of course, when driving this, it is important to note that the first and sixth parts are already integrated, and that the wedge pieces (33) are guided by the guide ribs (24c, 24c) provided on the fixing plate. It does not require any skill to operate, and does not require special effort such as bolting, even at high places. In addition, due to the wedge piece driving operation, both fixing plate parts (14, 24) are forced to bend at this wedge piece position due to the presence of the spacing plate part (15), but this is not necessary. In order to use the restoring force of the fixing plate to make it self-tightening, the locking protrusion provided on the main body (
After hooking the rope to 2) and adjusting its tension and position, the protrusion may be lightly tapped into the cut-out hole.

In this case, if the pair of protrusions (2, 2') shown in FIG. 5, which are cut and raised in opposite directions, are used, the above-mentioned anchoring work is further facilitated because the rope is difficult to come off.

In addition, the protrusion (2) is cut out at three positions in the orthogonal radial <r> direction in the conventional metal fitting shown in FIG. ) also in the third
As shown in the figure, since this can be cut and raised as a locking protrusion C15b), the workability of rope tensioning can be further improved.

The above example shows how to attach ropes to snow protection nets and windbreak nets, but its uses are extremely wide, including attaching ropes to the branches of fruit trees and crop vines in greenhouse agriculture.

[Brief explanation of the drawing]

Fig. 1 is an assembled perspective view of a metal fitting according to an embodiment of the present invention, Fig. 2 is a perspective view of its engaging part, Fig. 3 is a perspective view of the fixing plate part under use, and Fig. 4 is a perspective view of another retaining part. Figures 5 and 5 are perspective views of other engaging protrusions, and Figure 6 is a perspective view of a conventional interlocking metal fitting. 1: Conventional fitting, 2: Engagement protrusion, 3 (a, b): Bolt/nut, 4: Engagement hole, 5: Engagement part, 1o: Part A 20: Part B, 11.21: Main body, 12 , 22 ni end, 13
, 23: Other end, 14, 24: Fixing plate part, 15: Spacing plate part, 16: Stabilizing piece, 3o: Wedge part, 31: Fixing plate part, 32: Wedge plate part, 33: Wedge piece, l: Interval Applicant Masaharu Abano Agent Patent Attorney Mibuya Tsuchishima (and 1 other person) Figure 4 DA Figure 5 Figure 6 Procedure Amendment 4 (Juri (Next day on Sunday) July 1, 1985 1 Indication of the case Showa Patent Application No. 64313 of 1959 2 Metal fitting for interlocking between names of invention 3 Relationship with the case of the person making the amendment Patent applicant 1-3.8-6 Niwashirodai, Sakai City, Osaka Prefecture Corrected specification, corrected drawings (Fig. 1 and Figure 3) Correction ID
Title of the Invention: Clamp for interlocking Patent scope Claims: The locking plate part and the fixing plate part are disposed on the other side so as to provide a gap between the fixing plate parts and the main hole. , Clause 5 1d gold. DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal fitting used for fixing to a ball and attaching silk. Prior art and its problems In the installation of windbreak nets, snow protection nets, etc., balls are arranged in a row at predetermined positions, M anchoring devices are fixed to these, and then the components of the net are attached to these metal fittings. This is done by attaching silk, wire, or an auxiliary reinforcing or tensioning rope or wire (in the following description and claims, these are collectively referred to as "ropes"). Conventional fastening metal fittings used for such work include, for example, as shown in FIG. It consists of fixed plate parts (1A, 1C) that are bent and extended as one unit. To attach this to the ball, press the main body part (1C) against the outer surface of the ball to form a ring, and both fixing plate parts (1A, 1G
), then the bolt (3a)' was pushed through the bolt hole provided there, and the bolt (3b) was secured with a washer in the usual manner. After installation, the rope is attached to the protrusion (
2) and the main body (1B), and then engaged by the hammer of the protrusion. One of the drawbacks of this metal fitting is that the mechanical strength of the main body (1B) is likely to be impaired due to the pressing and closing of the annular main body. Also, if the inner diameter of the ring does not match the outer diameter of the ring, it is difficult to securely and firmly attach the ring. That is, when pushed closed, it is ideal that both the fixing plate parts (1A, 10) come into close contact with each other in just the right amount, but it is difficult to achieve such cyclization if only by hand. Even if this is possible, if the outer diameter of the ball does not match the inner diameter of the annular fitting, for example, if the outer diameter of the ball is too small, the fitting will easily slip off, and if the outer diameter of the ball is too large, the fitting will fall off easily. There is only abutment at the tip sides (1d, 1e), making it difficult to install firmly. Even if it appears that the installation is complete,
When exposed to strong wind and rain, it tends to loosen and cause unwanted slippage. Furthermore, this conventional metal fitting does not have good workability. In other words, bolting is an operation that may seem simple, but the bolt holes of both fixing plates must be aligned with each other, and it is necessary to attach several surfaces in one day at high places. When this is required, it requires a surprising amount of attention and physical labor, which is a serious problem in labor management. An object of the present invention is to provide an interlocking fitting that can be easily and securely attached to a ball without compromising its mechanical strength as in the conventional products described above. The object of the present invention to solve the problems is to provide a first half ring having an interlocking protrusion, an engaging hole provided at one end side, and a fixing plate extending from the other end side. a belt-shaped main body part, a silk engaging protrusion, and an engaging beak that can be engaged with the engaging hole of the first main body part so as to form an annular main body together with the first main body part on one end side; a second semi-annular band-shaped main body part having an extending fixing plate part corresponding to the fixing plate part of the first main body part on the end side; A locking plate portion with a wedge hole is inserted into an insertion hole provided in a fixing plate portion of the other main body component, and the locking plate portion is attached to the wedge hole of the locking plate portion that is inserted into the insertion hole. A wedge piece is provided on one of the securing plate portions, and the other securing plate portion is provided with a wedge piece located outwardly from the locking plate portion and the main insertion hole so as to provide a gap between the securing plate portions. This is achieved by an interlocking metal fitting characterized in that a spacing plate part that can come into contact with the plate part is provided in a protruding manner. The above metal fitting of the present invention is arranged so that the locking beak on one end side of the other semicircular main body part is engaged with the locking hole on the one end side of the other semicircular main body part to make the whole into an annular shape and wrapped around the ball at a desired position. The locking plate with a wedge hole protruding from one of the fixing plates can be passed through the insertion hole of the other fixation plate, and a wedge piece can be driven into the wedge hole protruding outside of the insertion hole to fix it to the ball. can. In this case, a gap is maintained by the spacer plate between the two reversing plate parts, the spacer plate position is used as a fulcrum, the wedge part position is the point of effort, and the fixed plate part extension position of each semi-annular main body part is used as the fulcrum. The point is that the more the wedge piece is driven in, the more the ball is tightened into the silk fastening fitting. In order to stably attach the metal fittings to the ball, the fixing plate portion that the spacing plate portion comes into contact with is provided with an auxiliary insertion hole at a position corresponding to the spacing plate portion. , it is desirable to include a stabilizing piece portion that engages with the auxiliary insertion hole. The fixing plate portion having the main insertion hole preferably includes a wedge guide rib along the insertion hole. The interlocking protrusions may be provided in pairs, and the eight pairs of protrusions may be cut and raised to face each other. In this way, the rope hooked to the pair of protrusions is difficult to come off, making the interlocking work that much easier. If necessary, the spacing plate portion may also be provided with an interlocking protrusion. It is preferable that the interlocking protrusions are provided at approximately 906 intervals around the metal fitting. Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. The metal fittings shown in Figure 1 consist of two main body parts (10, 20
>, <It consists of four parts: a wedge part (30) and a wedge piece (33), but before attaching it to the ball, the wedge part (30) is fixed to one of the fixing plates of the main body part. In that sense, it can be said that there are three parts. The main body part (10) includes a semicircular band-shaped main body part (11) having a protrusion (2) with which silk engages, and a fixing plate part (14), and has an engagement hole (4, 4). The main body part (20) includes a semi-annular main body part (21) having a rope engagement protrusion (2) and a fixing plate part (24), and has an engaging part (5, 5). Both parts (10, 20) are band-shaped metal fittings because they include the fixing plate parts (14, 24) and can be manufactured easily and inexpensively by sheet metal processing. Also, the fact that the main body (11, 21) is semi-annular means that
This is to obtain an annular body whose most part contacts the outer circumferential surface of the ball to be attached when engaged by the engaging portion described below. Most of the contact is due to the play interval ((1
) exists. Further, the term "half ring" is not necessarily limited to a semicircle. If the outer periphery of the ball is polygonal, it means that it is an angular half ring that is half of the outer periphery, and the rainwater body does not need to be the same half ring. In the illustrated case, the main body (11) has a large arc shape, and the main body (21) has a small arc shape. The rope attachment protrusion (2) provided on the rainwater body (11, 21)
) is cut and raised into a single piece, but if the direction of the cut and raise is reversed to form a pair of protrusions as shown in Fig. 5, the workability of silk tensioning will be greatly improved. The engagement holes (4, 4) drilled on the one end (12) side of the main body part (10) are connected to the engagement parts (5, 5) cut and raised on the one end (22) side of the main body part (20). movably engaged. By movably engaging, we mean that both fixed plates (14°24) can be opened and closed laterally using this engaging part as a fulcrum, but they can also move up and down slightly. sell. Providing such a margin not only makes it easier to engage the rainwater body parts, but also makes it easier and cheaper to manufacture these rainwater body parts. This is because a high degree of dimensional accuracy is not required. FIG. 4 shows an engagement hole (with a shape different from that in FIG. 1).
4') and the engaging portions (5', 5') are shown.
In this case as well, the levers are engaged and used in the same manner as in FIG. In the rainwater body parts (10, 20), the main body part (1
Fixing plate portions (14, 24) extend from the other ends (13, 23) of the fixing plates 1, 21>, respectively. On either one of the fixing plate parts, in the figure, the fixing plate part (14),
A spacing plate portion (15) extends from the tip side (14c) in a direction perpendicular to the fixed plate portion. The spacing plate part (15) is provided with a stabilizing piece part (16). 13 ((2) of the spacer plate part has a ball outer diameter of 30 to 601
In the case of metal fittings used in cases of approximately 110 mm, approximately 110 mm is appropriate. Preferably, a locking protrusion (15b) is also cut and raised in this spacer plate portion (15). This spacing plate part (
15) and the role of the stabilizing piece (16) will be described later. A wedge component (30), which will be described later, is fixed to the fixing plate portion (14). The wedge part (30) is a part in which a locking plate part (32) having a wedge hole (32a) and a fixing plate part (31) integral therewith have a cross-sectional shape, and are suitable for sheet metal processing. It is easily produced by this method. The wedge hole (32a) is, of course, a punched hole having a width approximately equal to the thickness of the wedge piece (33). The fixing plate part (14) of the main body part (10) has a locking plate part (
An insertion hole (14a) is formed through which the holder 32) is inserted. As shown in FIGS. 1 and 3, this opening is performed by cutting and bending, and the cut and bending piece (14b) is used for holding and fixing the fixing plate part (31) of the wedge part. The fixing plate part (24) of the main body part (20) has a locking plate part (32) of the wedge part (30) fixed to the fixing plate part (14) of the part (10) as described above. An insertion hole (24a) is provided for the spacer to be inserted therethrough, and an insertion hole (24b) for the stabilizing piece (16) provided in the spacer plate (15) is provided. The wedge hole (32a) is opened by inserting the locking plate (32).
) faces the outside of the fixed plate part of Part B. Preferably, guide ribs (24) for the wedge piece (33) are provided in the upper and lower directions on the fixing plate at both sides of the wedge hole (32a).
c, 24C) is provided. In order to attach the above-mentioned embodiment metal fitting to the ball, as described above, first engage the engagement hole (4) in the main body part with the engagement part (5), and then move the metal fitting to the specified position of the ball to which the metal fitting is to be attached. Then, using the engaged portion as a fulcrum, both the fixing plate parts (14, 24) are expanded in the horizontal direction, and the rainwater body part (11° 21) is wrapped around the outer peripheral surface of the ball. Under this condition, both the fixing plate parts (14, 24> are movable up and down using the engaging part as a fulcrum, so the above-mentioned stabilizing piece part (16) is then inserted into the insertion hole (24b). the end piece (15a) of the spacing plate part is brought into contact with the other fixing plate part (24). Then, both the fixing plate parts (14, 24) are attached to the spacing plate part (1
5) II] (l), they face parallel to each other and do not swing up and down.
6) Bend the extra portion protruding from the outer surface of the other fixing plate part (24). This will most certainly ensure that the rainwater body parts (10°20) are completely integrated. Next, insert the wedge piece (33) into the wedge hole (32a) of the locking plate part (32) that has also appeared on the outer surface of the fixing plate part (24).
If the two fixing plates (14, 24) are driven in sufficiently, the two fixing plates (14, 24) will approach each other, but the tip of the spacing plate (15) will not touch the fixing plate (2).
4), both fixing plates are bent at the wedge piece position, with the wedge piece position as the point of force, the spacer plate position as the fulcrum, and the end of the main body (13° 23) as the point of action. Both ends (13, 23) of the main body portion approach each other, and the rainwater body portion tightens the ball. In this way, attachment of the interlocking fitting to the ball is completed. When driving the wedge pieces, the wedge pieces (33) are guided by the guide ribs (24c, 24c) provided on the fixing plate part (24).
will be guided to. Driving the wedge pieces does not require any skill, and does not require special effort such as bolting even at high places. In addition, the restoring force of the fixing plate portion, which is forcibly bent at the wedge piece position by the operation of driving the wedge piece, automatically serves to prevent the wedge piece (33) from falling off. To use the metal fittings attached to the ball in this way,
After hooking the rope onto the locking protrusion (2) provided on the main body (11, 21) and adjusting its tension and position, the protrusion may be lightly tapped into the cut-and-raised hole. In this case, if the pair of protrusions (2, 2') whose cut and raised directions are opposite to each other in the upper and lower directions as shown in FIG. In addition, the protrusion (2) is cut and raised at three locations in the orthogonal radial (r) direction in the conventional fitting shown in FIG. 15) can also be cut and raised as a locking protrusion (15b), as shown in FIG. 3, so that the workability of rope tensioning can be greatly improved. Such metal fittings are used in various cases where it is necessary to attach ropes to balls; for example, when installing netting facilities for wind, snow, and sand protection, and forcibly guiding tree branches in Japanese orchards. The advantages of this metal fitting are fully demonstrated in these cases, such as when securing ropes at work, guiding ropes in greenhouse gardening, and assembling scaffolding pipes at construction sites. Effects of the Invention As described above, according to the present invention, the metal fitting can be easily and securely attached to the ball without damaging its mechanical strength by pushing the metal fitting closed like in the case of conventional metal fittings. Wearing hardware can be provided. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a fitting according to an embodiment of the present invention, FIG. 2 is a perspective view of the engaging portion of the fitting shown in FIG. 1, and FIG. 3 is a state in which the fitting shown in FIG. 1 is used. FIG. 4 is a perspective view of another example of the engaging portion, FIG. 5 is a perspective view of another example of the engaging projection portion, and FIG. 6 is a perspective view of the conventional It is a perspective view of an interlocking metal fitting. 1: Conventional metal fitting, 2: Engagement protrusion, 3a, 3b: Bolt nut, 4: Engagement hole, 5: Engagement part, 10: Main body part, 20: Main body part, 11.21: Main body part, 12.22 Ni One end, 13.23: Other end, 14.24: Fixing plate part, 15: Spacing plate part, 16: Stabilizing piece part, 30: Wedge part, 31: Fixing plate part, 32: Locking plate part, 33: Wedge piece, Q: interval, 14a: insertion hole (main insertion hole), 24b: insertion hole (auxiliary insertion hole). (that's all)

Claims (1)

[Claims] 1) A semicircular band-shaped body portion (11) having a rope engagement protrusion (2);
, 21) has an engagement hole (4) on its one end (12, 22) side.
or an engaging beak (5) and the other end (1
3, 23), the fixing plate part (14, 24) is integrally extended from the instep/6-car parts (10, 20), and the fixing plate part (10, 20).
Consisting of a wedge part (30) and a wedge piece (33), each of which has an angular cross-section with a wedge plate part (32), and a fixed plate part (14) of one of the above-mentioned upper and sixth parts. for,
A spacing plate part (15) with a stabilizing piece (16) extending from the tip side (14c) is layered, and the other fixed plate part (2
4) includes an insertion hole (24a) of the wedge quaternary part (32) of the wedge component fixed to one of the fixing plate parts (14), and a stabilizing piece extending to the spacer plate part (15). The insertion hole (24b) of (16) is opened, and the above-mentioned upper and 6 parts are engaged by the engagement of the engagement hole (4) and the engagement beak (5). The piece (16) is inserted into its insertion hole (24A
), the solid plate part (14
, 24) is a butterfly! by the spacer plate part (15)! 2) A patent in which the other fixing plate part (24) is provided with wedge guide lips (24c, 24c). 3) The spacing plate portion (15) has a locking protrusion (15b) cut and raised. Metal fittings