JPH06167142A - Mounting structure to frames or the like and tent based on its application - Google Patents

Abstract

PURPOSE:To enhance welding strength between tent members by bending a pair of holding flaps and an extension extending outwardly from each base end and a thermal welding base cloth for its formation and welding the whole surface on a counter flap side. CONSTITUTION:A pair of holding flaps 8 are folded and welded in the middle part of a base cloth 6 made of PVC-coated canvas while its opposite side hot- welded parts 7 are hot-welded with a tent sheet. A reinforcing cloth 10 is hot- welded in the folded parts of the flaps 8. The tip of the flaps 8 are folded into the shape of M, thereby reinforcing the flaps. Then, a hole 11 or an eyelet is installed on the flaps 8 so as to pass a connection string to be tied with a structure. The tensile force working on the flaps is diffused equally on both sides, thereby minimizing a stress which applies to the welded parts. Furthermore, the presence of the hot welded parts 7 on both sides of the flaps 8 nearly prevents a shearing force which tends to wind up the welded parts. This construction makes it possible to enhance the welding strength of the tent sheets, and what is more to hot-weld more easily.

Description

Detailed Description of the Invention

[0001]

[Object of the Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment structure for attaching a curtain such as a tent sheet to a frame of a structure and fixing the curtain to the structure.

[0002]

BACKGROUND OF THE INVENTION Recently, tents have been widely used in material warehouses and factories because of their easiness of construction and low cost. Such a tent has a mounting structure on the side of the tent sheet in order to fix the tent sheet to a framework made of pipe material. This mounting structure allows the tent sheet to withstand wind pressure, and generally has an allowable tensile strength of 220 kg /
For example, conventionally, as shown in FIG. 8 (a), the strength of m or more is required, and both ends of one piece of cloth C are wrapped and sewn with the reinforcing cords L as cores and sewn immediately inside. The tent sheet S was sewn by tying the eyelet A in each of the holes for stringing and reinforcing the tent sheet S, and the patch cloth B was welded to the opposite surface for waterproofing. .

However, in such a structure, the yarn in the sewn portion is deteriorated due to long-term use and the yarn is frayed due to stress concentration on the yarn and the needle hole. Especially, in such a U-shaped mounting structure, the holding flap is attached. When a tensile force is applied to F, a shearing force acts on the joint portion with the tent sheet, causing a peeling-off phenomenon. Also, the sewing process is troublesome and unsuitable for mass production.
Since the patch cloth B from the opposite surface is required, the point that an extra material and process are required was also a problem to be solved.

On the other hand, as shown in FIG. 8B, a structure has also been developed in which the central portion of the winding cloth C is sewn to another holding cloth D and the holding cloth D is welded to the tent sheet S. Even in the structure, there is a problem in that the joint portion with the tent sheet is rolled up, and there are drawbacks such as concentration of stress and poor production efficiency due to sewing.

[0005]

[Technical Items Attempted to Develop] The present invention has been made in view of such a background, and is intended to be attached to a frame or the like for the purpose of strengthening a joint portion between a curtain body such as a tent sheet and an attachment structure. This is an attempt to develop the structure and the curtain using it.

[0006]

[Constitution of the invention]

[Means for Achieving the Object] That is, the attachment structure to the frame or the like, which is the first invention of the present application, has an intermediate position of the heat-welding base cloth.
It has two holding flaps each formed by heat-welding one reciprocating folded portion of the base cloth, and the surface opposite to the surface on which the holding flaps are formed has a surface outside each holding flap and each holding flap. It is characterized in that a welding surface is formed on the surface between the flaps.

The attachment structure to the frame or the like which is the second invention of the present application is characterized in that a hole is formed in the holding flap in addition to the above requirements.

Further, the attachment structure to the frame or the like as the third invention according to the present application is characterized in that eyelets are provided in the hole in addition to the above requirements.

Furthermore, in addition to the above requirements, the holding flap is heat-welded by sandwiching a reinforcing member between one reciprocating turn of the base cloth. It is characterized by consisting of.

Furthermore, in addition to the above-mentioned requirements, in the structure for attaching to a frame or the like which is the fifth invention of the present application, the holding flap is provided with a reinforcing end portion whose tip is folded back into an M-shaped cross section. It is characterized by.

Furthermore, the sixth aspect of the present invention relating to the present application is characterized in that the mounting structure for the frame or the like is welded to the surface of the curtain. The above objects are achieved by these inventions.

[0012]

According to the present invention, since welding surfaces are formed on the outer surface of each holding flap and the surface between the holding flaps, when the welding surfaces are welded to the curtain, the holding flaps are stretched. When the force of (1) is applied, the tensile force is dispersed on both sides of the holding flap, and the shearing force that rolls up the welding surface is hardly exerted, and the rolling up of the welding surface is prevented. Further, in this mounting structure, since it is possible to mount the curtain body only by welding, the mounting work can be performed more efficiently than sewing.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to illustrated embodiments. Reference numeral 1 denotes a tent warehouse having a tent sheet 2 having the mounting structure of the present invention, which has a structure in which the tent sheet 2 surrounds a framework having pipes 3 combined. The tent sheet 2 is provided on the inner surface of the tent sheet 2 with a number of mounting structures 5 depending on the skeleton, and the mounting structure 5 is fixed to the skeleton pipe 3, whereby the tent sheet 2 is fixed to the skeleton. It is like this.

Of the above-mentioned structures, the present invention is a mounting structure 5.
The feature will be described in detail below. The mounting structure 5 is made of, for example, a heat-welding base cloth 6 obtained by coating polyvinyl chloride on canvas which is the same material as the tent sheet 2, and its form is two holding flaps in the middle of the base cloth 6 as shown in FIG. 8 is formed so as to stand up, and a welding surface 7 with the tent sheet 2 is formed on the opposite surface.

As shown in FIG. 2, each of the holding flaps 8 makes a large wrinkle on the base cloth 6 and makes a single reciprocating folded portion 9.
And a reinforcing cloth 10 as an example of a reinforcing member is sandwiched between the folded-back portions 9 and heat-welded into a plate shape. Incidentally, since the reinforcing cloth 10 is provided so as to obtain sufficient strength when the connecting cord is passed through the hole formed in the holding flap 8 as described later, the base cloth 6
If sufficient strength can be obtained even by folding back and forth once, it is not necessary to provide it from the beginning, and conversely one piece of reinforcing cloth 10
If a sufficient strength cannot be obtained, a plurality of reinforcing cloths 10 are sandwiched between the folded-back portions 9. As the reinforcing cloth 10, for example, the same heat-welding cloth as the base cloth 6 can be used.

When forming the holding flap 8, the weave of the base cloth 6 is taken into consideration so that the strength of the holding flap 8 in the height direction is strong. For example, when the base cloth 6 is a woven cloth,
Make a strong weft thread parallel to the tent sheet 2,
It is also one method that the base fabric of the folded-back portion 9 adopts a bias-like configuration in the rising direction of the holding flap 8. Further, the reinforcing cloth 10 has a texture in the same direction as the texture of the base cloth 6, a bias structure similar to that of the holding flap 8, or a bias structure with respect to the texture of the base cloth 6 is adopted. The strength in the depth direction may be increased. The height of each holding flap 8 is appropriately determined according to the diameter of the pipe 3 to be fixed.

Next, each such holding flap 8 is formed with a hole 11 at one or several places. This hole 11 is
It is provided to tie each holding flap 8 and the pipe 3 together through the connecting cord, and the hole portion 11 has the reinforcing cloth 1
If the presence of 0 does not provide sufficient strength,
Eyelets 12 can be provided as shown in FIG.

Further, a reinforcing cord 14 is applied as a reinforcing member of the holding flap 8, and this is continuously passed through the tip of the folded portion 9 as shown in FIG. 3B to reinforce the end of the holding flap 8. You can also By the way, as such a reinforcing cord 14, a high-strength fiber such as an aramid fiber is preferable. Further, as another reinforcing method of the end portion of the holding flap 8, as shown in FIG.
As shown in (c), the tip of the folded portion 9 may be folded further inward to form the reinforcing end portion 13 having an M-shaped cross section.

Next, the welding surface 7 will be described, and the relationship with the holding flaps 8 will be described. The welding surface 7 is formed on the surface opposite to the surface on which the holding flap 8 is formed, and specifically, as shown in FIG. 2, the surface between the two holding flaps 8 and the two holding flaps 8 are formed. The flaps 8 are formed on their respective outer surfaces.

Incidentally, the fact that the welding surfaces 7 are formed on the back surfaces on both sides of the root of each holding flap 8 is a characteristic constitution of the present invention. By adopting such a constitution,
When a tensile force acts on each holding flap 8, the tensile force is evenly distributed on both sides of the holding flap 8, so that the stress applied to each welding surface becomes small. Further, the welded surface is most easily peeled off when a shearing force acts to roll up the welded surface, but the presence of the welded surfaces 7 on both sides of the holding flap 8 causes such shearing. Almost no mechanical force is applied, and the welding surface is prevented from rolling up.

The mounting structure 5 has the above structure. When the tent sheet 2 is provided with this structure, the mounting structure 5 is placed on the tent sheet 2 with the welding surface 7 facing down. First, heat is applied to the welding surface 7 between the two holding flaps 8 to weld it to the tent sheet 2, and then the welding surface 7 outside each holding flap 8 is welded to the tent sheet 2, resulting in a beautiful finish. Become. In this case, since the mounting structure 5 of the present invention has the base cloth 6 serving as the welding surface 7 on both sides of the two holding flaps 8, when the mounting structure 5 is placed on the tent sheet 2, the mounting structure 5 is naturally held. With the flap 8 standing upright, the welding work can be easily advanced without the need for a special jig.

By the way, although the allowable tensile strength of this type of mounting structure has a standard value of 220 kg / m or more and a safety factor of 2.5 or more, the present invention in which one reinforcing cloth is put in using an ordinary tent The tensile force of a test piece of 30 cm (with 1 grommet), which is an applicable product, was 250 kg. The allowable tensile strength was calculated based on this and compared with the standard value, 250 kg × 100/30 cm × 1/2. 5 = 333 kg / m 2, and it was confirmed that the strength was significantly higher than the standard value.

Next, a method of forming the mounting structure 5 will be described. First, in order to continuously form the holding flap 8, as shown in FIG.
It is possible to adopt a method in which the reinforcing cloth 10 is sandwiched between the portions that are pressed inward while the cloth is being pressed inward from both end portions, and the rolls 16 sandwich the reinforcing cloth 10 and heat-weld the same. If necessary, the continuously molded product may be cut into a suitable length.

Further, in order to form the holding flap 8 in a stepwise manner or for every fixed unit length, as shown in FIG. 5, the base cloth 6 is sucked by the suction tool 17 from the upper side, and by the slender push-up tool 18 from the lower side. After pushing up the base cloth and sandwiching the reinforcing cloth 10 there,
The base cloth 6 is sandwiched by the welding blades 19 from both sides and welded to form the mounting structure 5.

Further, as a method for fully automating a series of steps from the formation of the holding flap 8 to the welding to the tent sheet 2, as shown in FIG. 6, the base cloth 6 unwound from the raw fabric 6a.
While holding the reinforcing cloth 10 between the two holding flaps 8 while pressing the welding forming rolls 20 at two positions with the welding forming roll 20, the hole portion 11 is formed by punching in the middle,
A method can be adopted in which the tent sheet 2 is unwound from the original fabric 2a from the lower side thereof, and the tent sheet 2 and the welding surface 7 of the base cloth 6 are welded by the welding and laminating roll 21. Note that, in connection with the present invention, the tent sheet and the holding flap are not separately configured, but the tent sheet 2 as shown in FIG.
It is also possible to adopt a method in which one reciprocating turn is provided on itself, and the reinforcing cloth 10 is sandwiched therebetween and heat-welded to integrally form the holding flap 8 as a part of the tent sheet.

[0026]

According to the present invention, since the welding surface is formed on the surface outside each holding flap and the surface between the holding flaps, the joining state between the tent sheet and the mounting structure is strong, and the welding surface Peeling due to rolling up is prevented. Also, with this mounting structure, it is possible to mount the tent sheet only by welding, so there is no deterioration of the threads, as in the case of sewing, and no stress is concentrated on the threads or needle holes, and durability is improved. Is excellent. Further, since there is no needle hole, it is not necessary to apply a patch cloth on the opposite surface of the tent sheet, and the number of parts is reduced, leading to cost reduction.

Further, in the mounting structure of the present invention, since the base cloths serving as the welding surfaces are present on both sides of the two holding flaps, the holding flaps stand in the natural state in an upward state, and the welding work is performed in that state. You can easily proceed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a tent warehouse equipped with a tent sheet to which a curtain mounting structure of the present invention is applied.

FIG. 2 is a perspective view showing a mounting structure, which is a characteristic configuration of the present invention, broken in a cross-sectional direction.

FIG. 3 is a vertical sectional view showing various reinforcing structures of a holding flap.

FIG. 4 is a perspective view showing an example of a method for forming a mounting structure.

FIG. 5 is a vertical cross-sectional view showing stepwise another molding method of the same.

FIG. 6 is a perspective view showing still another forming method of the same.

FIG. 7 is a perspective view showing a method of folding the tent sheet itself to form a holding flap.

FIG. 8 is a vertical cross-sectional view showing two types of conventional mounting structures.

[Explanation of symbols]

 1 Tent Warehouse 2 Tent Sheet 2a Raw Fabric 3 Pipe 5 Mounting Structure 6 Base Fabric 6a Raw Fabric 7 Welding Surface 8 Holding Flap 9 Folding Part 10 Reinforcing Cloth 11 Hole 12 Eyelet 13 Reinforcing End 14 Reinforcing String 16 Roll 17 Suction Tool 18 Push-up tool 19 Welding blade 20 Welding forming roll 21 Welding and laminating roll

Claims (6)

[Claims] 1. A two-sided holding flap formed by heat-welding one reciprocating folded back portion of the base cloth at an intermediate position of the heat-welding base cloth, and a surface on which the holding flap is formed. An attachment structure to a skeleton or the like characterized in that a welding surface is formed on a surface outside each holding flap and a surface between the holding flaps on a surface opposite to the above. 2. The attachment structure for a frame or the like according to claim 1, wherein a hole is formed in the holding flap. 3. The attachment structure for a frame or the like according to claim 2, wherein eyelets are provided in the holes. 4. The attachment structure to the frame or the like according to claim 1, wherein the holding flap is heat-welded by sandwiching a reinforcing member between one back and forth turn of the base cloth. . 5. The holding flap has a cross section of M at its tip.
The mounting structure for a frame or the like according to claim 1, 2, 3, or 4, wherein a reinforcing end portion that is folded back in a V shape is formed. 6. The structure for attaching to the frame or the like is welded to the surface of the curtain, which is characterized in that:
Or the curtain described in 5.