JPH0438378Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a tool made of a plastic string-like object in the form of a loop, which is used for attaching display tags or for bundling purposes.

<Prior art> Loop ties that can connect both ends of a plastic string-like body, such as the loop ties mentioned in the present invention, have already been commercialized, and can be used to attach product display tags or to connect parts in relation to the main body. It is used for many purposes such as connecting parts of instruments and machinery, and in the miscellaneous goods field, connecting pairs of footwear and binding accessories.

Conventionally, this type of loop tie has a stopper, a connector,
A large number of binding tools, sealing tools, etc., with similar and slightly different shapes, have been devised and registered.

For example, if the coupling receiving part is one in which the direction in which the protruding body is accommodated is limited to one specific direction, or if it is cylindrical with no specified direction, the protruding part is placed inside the cylinder. A fixing part with a specific shape is provided to lock and fix the body.

In order to ensure sufficient engagement and locking, the projecting body may have a bullet-shaped head, or a wedge-shaped or butt-shaped locking protrusion (also called a skirt portion) on the head. In some cases, multiple . (For example, see Utility Model Application Publication No. 55-22746.) <Problems to be solved by the invention> Although these devices have been improved successively, they are complicated in terms of production, and do not require the use of protruding objects. When locking to the fixed part in the mating part, using the locking protrusions of the protruding body is easier than locking the protruding body itself due to the number of locking protrusions, their wall thickness, and material. It is physically possible that the tensile force in the opposite direction (also known as the waist) is weak.

Moreover, this locking protrusion is an integrally molded product, and does not necessarily open reliably into an umbrella shape during use.

When the string-like body part is bent into a loop shape and both ends are mated, if the fixed part provided on the inner wall of the mating receiving part is made of a homogeneous material and is a hard body, the protrusion inserted into it must also be made of the same material. Since the protrusions are molded, in order for the protrusions to pass through the fixing parts, the size of the protrusions must be as small as or smaller than the spacing between the fixing parts. If a force in the opposite direction is applied, the protruding body will separate from the mating receiving portion.

In order to prevent this, it is necessary to take the trouble to attach a locking protrusion integrally with the protrusion.
Conversely, if the protruding body is not provided with a locking protrusion and is made larger than the distance between the fixing parts, the shape of the fixing part must be devised in order to allow the protruding body to pass through the fixing part. However, it must be expanded or deformed by force, or it must be made of soft material.

In this case, problems tend to occur in the strength of the fixing part.

The above are the conventional problems, and the present invention solves these problems.

<Means for Solving the Problems> The present invention is made of a thermoplastic synthetic resin of the same quality (hereinafter referred to as plastic), and the inner wall of a cylindrical body is formed at one end of a plastic fiber or string-like body. The insertion head on the other end side is shaped like an arrowhead with a hollow part 8, and an enlarged part (hereinafter referred to as a detent part) is formed in the rear part, and the width of the part is equal to the length of the protrusion. The size should be larger than the spacing between the rings and less than the diameter of the insertion tube, and in order to limit the forward movement of the insertion head, it should be set at a slight distance from the insertion head and about the same size as the detent part of the insertion head. Further, the hollow part 8 is formed into a long through hole extending from near the tip of the insertion head C beyond the formation position of the detent part 9 to the adjustment area 7. This is what I did.

<Function> In use, the insertion head can be inserted into the insertion tube of the mating receiving part. At this time, since the insertion head is provided with the hollow part of the above structure, it easily shrinks in the width direction when it is inserted into the mating receiving part, and after passing through the protrusion ring, it is elastic due to its material and structure. It automatically and reliably expands and restores itself, and cannot be attached or detached unless it breaks even if a force is applied in the opposite direction.

<Embodiment> The drawings show an embodiment of the present invention, and FIG. 1 is a plan view thereof.

A is a loop tie, B is a mating receiving part, C is an insertion head, and D is a locking part.

In a hammer-shaped loop tie, the mating receiving part B, which corresponds to the head part, is a penetrating cylindrical part,
Reference numeral 1 designates the hollow insertion tube portion, 2 a protrusion ring provided within the insertion tube portion, 3 a filament-shaped shaft portion, 4 a shaft root portion, 5 a shaft connection portion, and 6 a shaft portion.

An adjustment area 7 is provided between the insertion head C and the locking part D, a hollow part 8 is provided in the insertion head C, and the inside of the mating receiving part B is provided at the rear of the insertion head C. A detent portion 9 is provided which is larger in diameter than the protrusion ring 2 provided in the holder.

FIG. 2 is a side view (partial side sectional view) taken along line A-A in FIG. 1. As is clear from the figure, the shape of the hollow part 8 is formed into a long through hole extending from near the tip of the insertion head C beyond the formation position of the detent part 9 to the adjustment area 7. That is.

FIG. 3 shows the cross-sectional shape of the loop tie of the present invention in which the filament-shaped shaft portion 3 is bent into a loop shape and the insertion head C is inserted into the mating receiving portion B.

The detent part 9 at the rear end of the insertion head C is larger than the distance between the opposing protrusion rings 2, but since the insertion head C is provided with the hollow part 8 having the shape described above, it can be pushed in the width direction by pressing during insertion. The protrusion ring 2 and the detent portion are in a mated state and do not separate even if a reverse tensile force is applied. During this insertion, a locking portion D is provided to serve as a stopper to prevent the insertion head from protruding too much from the mating receiving portion.

The size of this locking portion D is larger than the diameter or relative spacing of the projection ring 2, and the distance between the detent portion 9 of the insertion head C and the locking portion D, that is, the adjustment area 7 is larger than the diameter or relative distance of the projection ring 2. The purpose can be achieved if the size is slightly larger than .

In addition, the shaft root portion 4, shaft connection portion 5, and shaft portion 6 are thinner than the mating receiving portion B, insertion head C, and locking portion D due to stretch molding during the molding process and during execution. It was formed based on the idea that this method is more suitable for bundling and attachment.

Suitable materials for use in the present invention include polyethylene, polypropylene, and nylon.

<Effects of the invention> Although plastic is hard, it has flexibility, elasticity, and ability to retain its shape.The present invention takes advantage of these physical properties by providing a hollow part in the insertion head. By making this hollow part into a special shape, the insertion head can be reliably compressed and expanded elastically during insertion. Despite the shape, the locking part is formed at the rear of the insertion head through the adjustment area, so when the insertion head is inserted into the mating receiving part, It has been possible to expect the effect that the engaging position can always be maintained in a constant position without protruding significantly from the connecting part.

Moreover, compared to conventional products, the loop tie of the present invention has a simpler shape, a simpler mold, easier molding, less loss during molding, and a technology that has stronger binding strength. It is effective both physically and economically.

[Brief explanation of drawings]

FIG. 1 is a plan view of the present invention, FIG. 2 is a side partial sectional view, and FIG. 3 is a partial side sectional view showing the engaged state. In the figure, A is a loop tie, B is a mating receiving part, C is an insertion head, D is a locking part, 1 is an insertion tube part, 2 is a projection ring, 3 is a filament-shaped shaft part, 4 is a shaft root part, and 5 is a A shaft connecting portion, 6 is a shaft portion, 7 is an adjustment area, 8 is a hollow portion, and 9 is a detent portion.

Claims (1)

[Scope of utility model registration request] A loop tie formed by forming a cylindrical hook receiving part B with a through hole at one end of a fibrous or string-like part A made of thermoplastic synthetic resin, and an arrowhead-shaped insertion head C at the other end. In the case, the coupling receiving part B
The insertion cylinder part 1 is formed into a penetrating cylinder shape, and a protrusion ring 2 for engagement is formed protrudingly on the inner wall thereof, and the arrowhead-shaped insertion head C on the other end side has a hollow part 8 inside and the protrusion at the rear part. Forming a detent part 9 with a width greater than the relative distance of the rings 2, providing an adjustment area 7 of some distance, forming a locking part D with a width larger than the relative distance of the protruding rings 2, and further A loop tie in which the hollow portion 8 is formed as a long through hole extending from near the tip of the insertion head C, beyond the formation position of the detent portion 9, and reaching the adjustment area 7.