JPH0246728Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a shoe shape retaining device that is inserted into the toe of a shoe to maintain the shape of the shoe.

[Prior art]

In conventional shoe shape retainers, a pair of left and right shape retainers are separately molded into respective molds. Therefore, not only is the manufacturing cost of the above-mentioned mold retainers high, but also, after the mold retainers are molded, the left and right pair of mold retainers may get mixed up with other types of mold retainers during transportation or handling. become. Therefore, different types of mold retainers may be mistakenly treated as a pair of left and right, or left and right may be mishandled during the distribution process of mold retainers. There were problems such as finding and checking a pair of shape retainers and assembling them required extremely troublesome and time-consuming work.

Furthermore, the conventional shoe shape retaining device disclosed in, for example, Japanese Utility Model Application Publication No. 59-150311 has the disadvantage that it is relatively weak especially against vertical compression. This is mainly caused by the material of the mold retainer, but also due to the shape and structure of the mold retainer as a whole. As described above, if the top and bottom compression of the shoe shape retainer is weak, the original shape retaining function of the shoe shape retainer cannot be fully demonstrated.

[Purpose of invention]

The present invention has been devised in consideration of the above-mentioned conventional problems, and it is possible to significantly reduce manufacturing costs, and when transporting or handling mold retainers, the left and right pair of retainers can be replaced by other types of retainers. The purpose of the present invention is to provide a shoe shape retaining device which has no risk of being mixed with other shape retaining devices, has appropriate strength even under vertical compression, and has a sufficient shape retaining function.

[Structure of the idea]

In order to achieve the above-mentioned object, the shoe shape retaining device according to the present invention has a pair of left and right spider-shaped bodies shaped to be inserted into the shoe tip, which are integrally formed by connecting their tips to each other. A reinforcing rib is integrally formed at a position spanning the tip joint of the left and right spider-shaped bodies, and during the insertion stage into the shoe tip, the above-mentioned spider-shaped bodies are divided into left and right parts at the tip joint. It is characterized by being configured so that it can be used.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

As shown in FIGS. 1 and 2, this shoe shape retaining device has a pair of left and right spider-like bodies 1, 1 each having an insertion shape that matches the shape of the inside of the shoe tip, and their tips are connected to each other. Depending on the situation, it is integrally formed. Both of the above-mentioned spider-shaped bodies 1, 1 each have a shape in which a triangular prism-shaped or triangular pyramid-shaped spike portion 2 at the rear portion and a spacing portion 3 at the front portion are integrally formed. A concave portion 4 is formed on the entire surface of the back of each of these spigot-like bodies 1, 1, extending from the spigot low portion 3 to the spigot high portion 2. Due to the concave portion 4 formed on the back of the spider 1, downwardly hanging supporting legs 5, 5 are formed at appropriate heights on both sides of the spider 1. In addition, the above-mentioned spiders 1 and 1 include:
A finger hook rib 6 is formed at the rear end of each ridged portion 2 and hangs downward. As shown in FIG. 4, the lower end of this finger hook rib 6 is set at a higher position than the lower end of the supporting legs 5, 5,
As a result, a finger is inserted through the gap formed below the finger-resting rib 6, and the fingertip is inserted into the finger-resting rib 6.
By hooking and pulling out the shoe, the spider-shaped body 1 can be removed from the inside of the shoe tip. Furthermore, a reinforcing rib 7 is integrally formed at the center of the back at a position where the left and right pair of spider-shaped bodies 1, 1 straddle the tip joining portion 8 of the above-mentioned spider-shaped bodies 1, 1 when their distal ends are connected. has been done. This reinforcing rib 7
has a circular shape in the embodiment, and is formed, for example, by a resin particle-filled portion when molding the mold retainer using a mold. That is,
When manufacturing the shape retainer of the present invention, resin particles of pre-foamed polyethylene-styrene copolymer, for example, are filled into the mold through the resin particle filling port of the mold, and steam is blown into the mold to fill the gaps between the particles. At this time, the mold is fused and molded using a mold, but at this time, due to the resin particle filling port described above, the mold retainer after being removed is inevitably filled with resin particles at the location corresponding to the resin particle filling port described above. A resin bulge is formed on the surface. This raised portion, that is, the resin particle-filled portion is formed at the position of the tip joint portion 8 of the above-mentioned spider-shaped bodies 1, 1, and serves as the reinforcing rib 7.
Note that the reinforcing ribs 7 described above do not necessarily have to be formed using the resin particle-filled portion.

Further, a cut groove 11 is formed at an appropriate depth in the tip joint portion 8 of the above-mentioned spider-shaped bodies 1, 1, so that the left and right spider-shaped bodies 1, 1 can be easily divided. ing. The above cut groove 11
is molded at the same time as molding with a mold.

The above-mentioned shape retainer is preferably formed by ordinary steam molding using expandable polyethylene-styrene copolymer particles having appropriate flexibility and rigidity, but for example, foamed polyethylene, foamed polypropylene, It may be made of expanded polystyrene or the like.

In the above configuration, when using such a shoe shape retainer, firstly, during transportation or handling, the pair of left and right spider-like bodies 1, 1 is
It can be used as it is after being joined and integrally formed.
Therefore, there is no possibility that the pair of left and right spider-shaped bodies 1, 1 would be mixed up with other types of bodies during transportation or handling of the above-mentioned shape retaining tool.

Next, as shown in FIG. 5, when the above-mentioned shape retaining tool is actually inserted inside the toe part of shoe A to retain the shape of the shoe toe part, the shape retention device shown in FIGS. The pair of left and right spider-shaped bodies 1, 1 are cut by bending the cutting portion 10 of the tip joint portion 8. In this case, the cut groove 11 is formed in the tip joint 8, and the cutting point 10 is located on the center line of the reinforcing rib 7 formed in the tip joint 8. As shown in FIG. will be done. In this way, the spider-shaped bodies 1, 1 are divided into left and right halves, and each spider-shaped body 1, 1 is used by being inserted into the corresponding pair of left and right shoes A.A.

[Effect of idea]

As described above, the shoe shape retaining device according to the present invention includes a pair of left and right spider-shaped bodies that are inserted into the shoe toe and are integrally formed by connecting their tips to each other. A reinforcing rib is integrally formed at a position that straddles the tip joint portions of the two. With such a configuration, the pair of left and right spiral bodies described above can be molded simultaneously using one mold, so that the manufacturing process can be simplified and costs can be significantly reduced.
In addition, since the pair of left and right spiders are integrally shaped, there is no possibility that the pair of left and right spiders will mix with other types during transportation or handling of the mold retainer. Moreover, since a reinforcing rib is integrally formed at the position spanning the joints of the ends of the left and right spider-shaped bodies, appropriate strength can be obtained against top and bottom compression of the mold retention tool, and this provides sufficient shape retention. Not only is it possible to provide functions, but also the overall thickness of the mold retainer can be made thin. Further, the reinforcing ribs described above can also be formed so as to serve as resin particle-filled portions during molding of the mold retainer. In this case, there is no need to provide a separate opening for filling the resin particles in the forming mold, and it becomes possible to mold the mold retainer having the above-mentioned reinforcing ribs with only one resin particle filling opening, which allows the molding operation It also has the secondary effect of making it easier.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a shoe shape retainer showing an embodiment of the present invention, Fig. 2 is a bottom view of the same, and Fig. 3 is one of the legs obtained by dividing the shoe shape retainer into left and right parts. FIG. 4 is a side view of the body, FIG. 5 is a perspective view of the body in use, FIG. 6 is a cross-sectional view taken along the line A-A in FIG. 3, and FIG. 7 is the figure 4. FIG. 2 is a sectional view taken along line B-B. 1 is a spider-shaped body, 2 is a high part, 3 is a low part, 4 is a concave part, 5 is a supporting leg part, 6 is a rib for finger hooking, 7 is a reinforcing rib, 8 is a tip joint part, and 11 is a cut groove. .

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A pair of left and right spider-shaped bodies shaped to be inserted into the toe of a shoe are integrally formed by joining their tips to each other, and straddle the tip joint of the left and right spider-shaped bodies. A shoe shape retainer characterized by having reinforcing ribs integrally formed at the positions where the shoes are bent. 2. The shoe shape retainer according to claim 1, wherein the reinforcing rib has a circular shape.