JPS6336739Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to prevent roof-mounted equipment, such as television antennas and solar collectors, from collapsing or shifting unexpectedly due to vibration or wind. A metal fitting used to fasten one end of a branch line stretched under tension to a fixed part of a building, such as a rafter under the eaves, to the fixed part of the building. At one longitudinal end of the tensile wire member, which is formed by bending the wire rods into a shape and twisting the two wire rods formed by the bending in a spiral shape with their circumferential surfaces in close contact with each other, a fastener is attached. Regarding a branch line fastening fitting, which is provided with an insertion holding part and a locking connection part for a branch line at the other end in the longitudinal direction, the purpose thereof is to improve the structure of the fastener insertion holding part or the branch line locking part with a simple structural improvement. The point is that the tensile resistance of the connecting portion can be significantly increased.

Specifically, in this type of branch wire fastening fitting, the branch wire locking connection part or the counter fastener insertion holding part to be provided at one end in the longitudinal direction of a tensile wire member bent and twisted into a hairpin shape is folded. Since it is formed at the continuous bending point of two wire rods formed by bending, the resistance strength against the tensile force that acts there during use corresponds to the maximum breaking strength of the wire rod itself. On the other hand, the other end in the longitudinal direction of the tensile wire member is the free end side of the two wires, and the counter-fastener insertion holding part or the counter-branch wire connection formed here Problems tend to arise in the tensile strength of the stop joint. Incidentally, conventionally, as shown in Figure 9,
A tensile wire member 0 made by bending a metal wire into a hairpin shape and twisting the two wire rods 01A, 01A formed by the bending in a spiral shape with their peripheral surfaces in close contact with each other.
2, one end in the longitudinal direction corresponding to the free end side of the two wire rods 01A, 01A is folded back over an appropriate length, and this folded part 02A is tightly wrapped to prevent the folded part from being fixed. However, in this case, it is difficult to fold back and tightly wind the tensile wire member 02 using mechanical force. However, not only is the manufacturing cost very high, but also there are variations in processing accuracy, and when a tensile force is applied during use, the folded tightly wound portion easily unravels, and both longitudinal ends of the tensile wire member are There was a large difference in the tensile strength of the wire rods, and the strength of the branch wire stopper as a whole was low compared to the wire material used.

In view of such circumstances, the branch wire stopper according to the present invention devised to achieve the above-mentioned object has the above-mentioned locking connection part or insertion holding part at the bending point of the two wire rods in the above-mentioned tensile wire member. At the same time, the free end portion of at least one of the wires is folded back into a loop shape to form the above-mentioned insertion holding part or locking connection part, and at least three wires located at the proximal end of the insertion holding part or locking connection part are formed. The wire rod portion is fixed by crimping a cylindrical member fitted onto the wire rod portion.

In other words, the folded portion of one longitudinal end of the tensile wire member corresponding to the free ends of the two wire rods is fixed by machining such as caulking of a cylindrical member that fits around at least three wire rods. Therefore, compared to the conventional processing methods mentioned above, it is not only easier to increase productivity and reduce manufacturing costs, but also has a synergistic effect with less variation in processing accuracy and strong fixation by caulking. , the tensile strength of the counter fitting insertion and holding part or the branch line locking connection part can be significantly increased. In particular, since there are at least three wire rods to be caulked, compared to the case of two wire rods,
When using a cylindrical member with a circumscribed circle of the same diameter, the dead space for caulking is small, and therefore extremely strong caulking can be easily performed, making it possible to obtain a product that is extremely superior in terms of production and performance. It came to this.

The embodiment of the present invention will be described in detail below based on the drawings. As shown in Figure 1, the total length is approximately 300 mm to 1500 mm.
1 piece of stainless steel wire with a diameter of 1.0mm to 3.0mm
As shown in Figure 2, one of the wires is bent into a hairpin shape so that it is as long as possible, and the two wire rods 1A and 1A formed by the bending are held together with their peripheral surfaces in close contact with each other for 20 minutes. By twisting the wire in a spiral shape up to 60 times, a tensile wire member 2 which can be bent and deformed is formed as shown in FIG. Then, at the bending point where the two wire rods 1A, 1A are connected together in this tensile wire member 2, a locking connection portion 4 for the branch wire a is formed using two turns of an annular wire rod, and the tensile wire member 2 is The screw member 6 with a hexagonal head 6a that can be screwed into a building fixing part is provided by folding back the free end portion 1A' of one of the longer wires 1A into a loop shape at the other end in the longitudinal direction of the wire member 2. An insertion holding part 3 is formed to be fixed and held directly below the head 6a, and three wire rod parts 1A, 1A, 1A' located at the base end of this insertion holding part 3 are
As shown in FIGS. 4 and 5, a cylindrical member 5 having an inner circumferential surface corresponding to the circumscribed circle of these three wire rod portions 1A is fitted onto the outside and this cylindrical member 5 is swaged. , 1A, 1A' are fixed.
In the figure, 7 is a packing, 8 is a packing holder, and 9 is a soft tube made of vinyl or the like that is fitted over an appropriate range in the longitudinal direction of the tensile wire member 2, and is particularly suitable for the tensile wire member in the building fixing part. 2 has the role of protecting the corner portions that are in strong contact with each other.

The above-mentioned branch line stopper is attached to the locking connection part 4 formed at one end of the tensile wire member 2, for example, at the sixth stop.
As shown in the figure, the free end of a tension support branch line a, such as a wire, derived from a roof-mounted device B such as a television antenna is locked and connected, and the screw member 6 held on the other end is connected to the eaves. By twisting the elastic packing 7 into a building fixed part A such as a lower rafter until the elastic packing 7 comes into strong pressure contact with the outer surface of the building fixed part A, the branch line a can be connected to the roof-mounted equipment B and the building fixed part A. It is used to keep the roof-mounted equipment B in a state where it will not fall over or shift its position by being stretched under tension between the roof and the roof.

7 and 8 show another embodiment, in which two wire rods 1A of the same length in the tensile wire member 2,
1A's free end portions 1A', 1A' are both folded back into a loop shape to form the insertion and holding part 3 from two loop wire rods, and the four wire rod parts 1A located at the base end of this insertion and holding part 3. ,1A,1A',
1A' are fixed and integrated by caulking a cylindrical member 5.

A nail may be used instead of the screw member 6.

It is also possible to hold and fix a simple round shape to the locking connection part 4.

[Brief explanation of drawings]

Figures 1 to 3 are perspective views for explaining material processing, Figure 4 is a perspective view of the finished product, Figure 5 is an enlarged cross-sectional view taken along the line of Figure 4, and Figure 6 is a general outline of the state of use. 7 and 8 show another embodiment; FIG. 7 is a perspective view; FIG. 8 is an enlarged sectional view taken along the line of FIG. 7;
FIG. 9 is a perspective view of a conventional product. DESCRIPTION OF SYMBOLS 1... Metal wire rod, 1A... Two wire rods, 2... Tensile wire member, 3... Fastener insertion holding part, 4... Branch wire locking connection part, 5... Crimping cylindrical member.

Claims (1)

[Scope of utility model registration request] One metal wire 1 is bent into a hairpin shape, and two wires 1 are formed by bending.
A tensile wire member 2 formed by twisting A and 1A spirally with their circumferential surfaces in close contact with each other, has an insertion holding part 3 for a fastener at one longitudinal end, and a holding part 3 for a branch wire at the other longitudinal end. It is a branch wire stopper that is provided with a locking connection part 4, and the locking connection part 4 or the insertion holding part 3 is formed at the bending part of the two wire rods 1A, 1A in the tensile wire member 2. At the same time, the free end portion of at least one of the wire rods 1A is folded back into a loop shape to form the above-mentioned insertion holding part 3 or locking connection part 4, and the insertion holding part 3 or locking connection part 4 is located at the base end. A branch wire fastening fitting characterized in that at least three wire rod portions are fixed by caulking a cylindrical member 5 fitted thereon.