JPH0634412Y2 - Sheet joining tool - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a joining tool for joining two or more heavy duty sheets such as tents, and in particular, joining of sheets for the net construction method. It concerns tools.

[Conventional technology and problems] The net construction method is useful for stabilizing soft ground and stabilizing slopes by preventing shear failure of the ground, lateral escape of the embankment material, and distributing the load of the embankment. It is a construction method. In the net-laying method, a roll-shaped mesh sheet is carried in to the construction site in advance, and the roll sheet is unraveled manually to be laid on the treated ground, but since the construction area is generally much larger than the sheet area, To form a continuous sheet having a required size. Conventionally, a method has been adopted in which sheet ends are overlapped and joined with a heat-melted bituminous material, or a U-shaped metal fitting is driven and bent to be joined. However, these methods require the use of tools, and workability is poor on soft ground with poor scaffolding and on slopes.

On the other hand, as a method that can be performed manually, Japanese Patent Laid-Open No. 59-2205
16, JP-A-60-168907 discloses a method of connecting with a rope or a cord and a seat end structure suitable for the method.
Certainly, these inventions can be joined only by human power, but the tying work requires a large amount of work and is likely to cause individual differences among workers.

In consideration of such a situation, the inventor studied a tool for performing on-site joining quickly, reliably and with good workability, and arrived at the present invention.

[Means for Solving the Problem] The present invention is a connecting tool for connecting two sheets having connecting holes, which is a plate-shaped molded product having both end bulging portions and an intermediate shaft portion. The present invention relates to a connecting tool which is capable of locking withdrawal after the bulging portion is inserted into the seat opening.

A preferred example of the connecting tool of the present invention is a plastic molded product whose both end bulging portions are in the shape of an arrow head or a hammer head, which can be folded in two with a symmetry axis, inserted, and expanded into the original shape after insertion.

The sheet on the net construction method is generally a high strength multifilament coarse woven fabric or equivalent knitted fabric, and only the peripheral portion is
It is a belt-like dense woven fabric or knitted fabric, and is further coated with a heat-melting resin, rubber, or a bituminous material. In the sheet for which the connecting tool of the present invention is preferably used, openings are formed in the end dense portion along the end surface at regular intervals and of constant dimensions. Opening holes can also be provided by pressing heated metal cones,
It is also suitable for carrying out the present invention that punching is performed by punching and then the periphery of the hole is reinforced with metal eyelets. Since the connecting tool of the present invention is used by bending it, inserting it into the opening, and expanding after inserting it, the size of the opening is smaller than the width of the end bulge of the connecting tool, and is larger than 1/2 of that. Is desirable.

As long as the connecting device of the present invention has an opening corresponding to the sheet, it does not stop at the sheet for the net construction method, but also for climbing tents, sheets, blind sheets for construction sites, dustproof sheets,
It can be used for joining a wide range of heavy duty sheets such as canvas.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. It is needless to say that the present invention is not limited to this embodiment with respect to the shape of the connecting tool.

FIG. 1 is an example of a coupling tool of the present invention. A shows the original shape and B shows the folded shape. It is a plate-shaped molded product with a thin portion provided along the axis of symmetry, and can be bent about 180 ° using the thin portion as a hinge. FIG. 2 shows another example of the connecting tool, which can be similarly bent by about 90 ° for use. Both FIG. 1 and FIG. 2 show examples in which one end is a hammer head type and the other end is an arrow head type. FIG. 3 shows an end face structure of the seat. The opening diameter of the seat end is smaller than the width of the head part of the connecting tool, but it can be inserted by bending. The two sheets are connected by inserting the required number of the connecting tools into the openings of the two sheets and expanding the sheets.

[Advantage of the Invention] The bonding tool of the present invention can be manufactured from a material having high strength and high corrosion resistance in the ground, such as polypropylene, polyethylene terephthalate, and polyamide. It has many merits such that the weight of each piece is small, no auxiliary device is required for joining the sheets, and the joining can be released easily if necessary.

Further, the connecting device of the present invention is also convenient for rolling, folding, transporting and unfolding the sheet, since the corresponding sheet structure is relatively simple. Therefore, it can be widely applied not only to the sheet netting method sheet but also to the connection of general heavy duty sheets.

[Brief description of drawings]

FIG. 1 is a perspective view of a coupling tool according to an embodiment of the present invention,
FIG. 2 is a perspective view of another embodiment of the coupling tool. FIG. 3 is a partial perspective view of a sheet for netting method, which is connected using the connecting tool of the present invention. A: coupling tool (unfolded state), B: coupling tool (folded state), 1,1 '... sheet, 2 ... opening.

Claims (3)

[Scope of utility model registration request] 1. A connecting tool for connecting two sheets having connecting holes, which is a plate-shaped molded product having bulged portions at both ends and an intermediate shaft portion, and is expanded into the sheet holes. A coupling tool that has a locking capability against withdrawal after it has been inserted through the outlet. 2. The coupling tool according to claim 1, wherein the bulging portion has an arrow head shape or a hammer head shape, and is a plastic molded article that can be bent, inserted, and expanded into its original shape after insertion. 3. The connecting tool according to claim 1, wherein the two sheets are sheets for a net construction method.