JP5479137B2 - Footwear shape holder - Google Patents

Description

  The present invention relates to a shape retainer for footwear capable of accurately retaining the shape of footwear such as shoes and sandals.

  Conventionally, as a shape retainer for preserving the shape of footwear such as shoes and sandals, a number of techniques for three-dimensionally bending cardboard, synthetic resin thin plates, etc. are known, for example, In addition, a technique for forming a front shape-retaining portion that retains the front portion of the footwear and a rear shape-retaining portion that retains the rear portion of the footwear from a single cardboard (Patent Document 1, Patent Document 2, Patent Document) 3) or a technique in which a flexible thin plate is formed into a tongue and bent in the footwear, so that the upper part of the footwear is mainly retained (for example, see Patent Document 4). .) Etc. are known.

Japanese Utility Model Publication No. 58-95708 Japanese Utility Model Publication No. 52-25843 Japanese Utility Model Publication No. 01-35910 Japanese Utility Model Publication No. 60-48707

By the way, the inner shape of the footwear is formed by a tree shape (last) imitating the shape of the foot, and the shape of the tree is a shape along the skeleton of the foot. As shown, the thickness of the bone changes greatly from the vicinity of the border between the ribs and the metatarsal bone, that is, the height of the foot increases. However, in the case of the conventional shape retainer, since the upper surface portion corresponding to the instep portion of the front shape retaining portion that retains the front portion of the footwear has a constant inclination angle with respect to the front-rear direction, A gap is formed between the shoe upper and the shape-retaining part of the footbone corresponding to the metatarsal bone that is the skeleton of the foot and the wedge-like bone or boat-like bone part that continues to the back of the foot. There was a problem that the shape could not be retained and the same part was easily crushed in the packaging box (FIG. 5).
In particular, as in Patent Document 2 and Patent Document 3, in the rear shape retaining portion that retains the rear portion of the footwear, a structure in which both side end portions bent into a mountain shape are in direct contact with the intermediate portion of the insole In the case of recent footwear where cushioning soft material has been used more frequently as an insole material, the insole is more likely to have marks or scratches. There was also a problem that the quality of itself deteriorated.

  Therefore, the present invention can more accurately maintain the shape of the footwear, and in particular, can prevent the portion corresponding to the upper portion from being easily crushed, can be easily assembled, and is soft to the insole material. The purpose is to prevent damage to the insole even when materials are used.

To achieve the above object, the present invention provides a shape retainer for footwear molded from a bendable flat plate and inserted into footwear.
As this shape retainer, it has a semi-elliptical front shape retaining portion that retains the front of the footwear, and a rear shape retaining portion that retains the rear of the footwear,
In the front shape-retaining portion, a linear valley fold line portion that traverses in the width direction (lateral width direction of footwear, the same applies hereinafter);
On the rear side of the valley fold line portion, by providing a mountain fold line portion that traverses in the width direction and curves in a protruding shape toward the rear,
When the valley fold line part is a valley fold, the mountain fold line part is a mountain fold, and the front shape retaining part is folded in the width direction,
The mountain fold line is the part corresponding to the border between the ribs and metatarsals in the skeleton of the foot,
In addition, the rear side of the front shape retaining portion is bent at an angle upward with the mountain fold line portion as a boundary.

Thus, by bending the valley fold line portion into a valley fold and the mountain fold line portion into a mountain fold, it is naturally curved so that the intermediate portion in the width direction protrudes upward, and at the same time, The rear side can be bent at an angle upward from the mountain fold line. And in the folded state, by setting the mountain fold line part to the part corresponding to the boundary between the ribs and metatarsals in the skeleton of the foot, it is possible to more faithfully reproduce the three-dimensional shape of the instep with respect to the front-rear direction. Can be held in a more accurate shape.
At this time, by adjusting the degree of curvature of the mountain fold line portion (increasing or decreasing the curvature radius), the folding angle behind the mountain fold line portion can be set as appropriate depending on the type of footwear.

Moreover, in this invention, the shape used for the conventional shape retainer may be sufficient as the said rear shape retaining part, and it is not specifically limited.
As a preferable shape, the rear shape retaining portion is composed of an extending portion extending rearward from one end in the width direction on the rear side of the front shape retaining portion, and the front shape retaining shape is provided at the tip of the extending portion. While providing the latching | locking part for latching to the other end side vicinity of the width direction of a part, this rear shape retaining part is assembled in the state along the circumference | surroundings of the footwear of footwear. Then, for example, even when using a soft material with cushioning properties for the insole, the place where the lower end of the rear shape part contacts is limited to the vicinity of the outer peripheral edge of the insole, There is no fear of damaging the merchandise value.
Here, the locking portion provided at the tip of the extending portion may be, for example, a simple cut, and if a cut is provided also at a location where the front shape retaining portion is locked. , Easy to engage. Furthermore, you may engage by providing a recessed part in the front-end | tip of an extension part, and a protrusion in the location where the front shape retaining part is latched.

In the present invention, at least one mountain folding line portion for folding forward is provided in the middle of the extending portion of the rear shape retaining portion.
This is because, for example, when the shape holder material is made of paper, if the easy-to-bend direction is set to the width direction, it becomes difficult to bend in the front-back direction. Is likely to occur. Therefore, by providing at least one fold-back line portion for folding in the front-rear direction, it is possible to bend smoothly. If two fold line portions are provided at a predetermined interval, the shape of the rear part of the footwear can be maintained more accurately, and the work of mounting the shape retainer in the footwear can be performed more smoothly. Will be able to do.

  It has a semi-elliptical front shape retaining part that retains the front part of the footwear and a rear shape retaining part that retains the rear part of the footwear. The front shape retaining part has a straight valley fold line part and a rear part. By providing a mountain fold line portion that protrudes in a projecting manner in the vicinity, the rear side of the front shape retaining portion can be bent at an angle upward with the mountain fold line portion as a boundary. The three-dimensional shape of the upper part can be reproduced more faithfully, and the shape can be maintained in a more accurate shape. In addition, by placing the rear shape part along the footwear's mouth circumference, even if a cushioning material is used for the insole or other material, the insole may remain or be damaged. There are no defects that damage the product value. Further, by providing a mountain fold fold line portion to fold forward in the middle of the rear shape retaining portion, for example, even when the shape retainer material is made of paper, it can be smoothly folded.

It is an expanded view of the shape retainer for footwear concerning this invention. It is explanatory drawing of the state which assembled the shape retainer for footwear, (a) is a side view, (b) is a top view, (c) is a front view. It is explanatory drawing of the state which assembled the shape retainer inside the footwear, (a) is an explanatory view in the case of holding a shoe, (b) is an explanatory view in the case of holding a sandal. It is explanatory drawing of the frame | skeleton of a leg | foot, (a) is a shin side side view, (b) is a top view. It is explanatory drawing at the time of inserting the conventional paper pad into footwear.

Embodiments of the present invention will be described with reference to the accompanying drawings.
The shape retainer for footwear according to the present invention is made to be able to accurately retain the shape of the upper part in the front-rear direction particularly in footwear such as shoes and sandals, and the insole has a cushioning soft material, etc. Even when used, care is taken so that the shape of the shape retainer remains on the insole and is not damaged.

  The shape retainer 1 for footwear is formed from a flexible and bendable flat plate such as cardboard or plastic material, for example, and has a semi-elliptical front shape retaining portion 2 for retaining the front portion of the footwear, and a rear portion. A shape retaining portion 3 is provided.

  A straight valley fold line portion 4 that crosses in the width direction is provided at an intermediate portion in the front-rear direction of the front shape retaining portion 2, and in the vicinity of the rear side of the valley fold line portion 4, A mountain fold line portion 5 that curves in a projecting manner is provided. And when this valley fold line part 4 or the mountain fold line part 5 is bent, line 5 'which the mountain fold line part 5 touches the front shape retaining part 2 ahead of the valley fold line part 4 is a bone of a foot. In the present embodiment, it is set at a site corresponding to the border between the ribs and metatarsals, and in this example, in order to facilitate the folding and the folding, and to prevent the inside of the footwear from being damaged, Both end portions of the mountain fold line portion 5 are partially cut as cut portions 6. In this case, if the outer peripheral edge is cut so as to be rounded, it is possible to further prevent the inside of the footwear from being damaged. Of course, this excision part 6 is not essential.

  As described above, the rear shape retaining portion 3 projects obliquely rearward from one end side in the width direction on the rear side of the front shape retaining portion 2, and two mountain-folded folding line portions in the middle of the extending portion. 7 is provided.

Here, this fold line portion 7 is effective for smoothly folding back, particularly when a paper such as cardboard is used as the material for the shape-retaining tool 1, and this will be described below.
When paper is used as the material for the shape-retaining tool 1, there are often characteristics that are easily bent in one direction in the vertical and horizontal directions and difficult to bend in the other direction due to the arrangement of fibers during papermaking. In this case, when the shape-retaining tool 1 is die-cut, the width direction is often die-cut so that it can be easily bent. Therefore, the rear shape-retaining portion 3 that needs to be folded back and forth becomes difficult to bend and bends forcibly. If it tries to do so, wrinkles and the like are likely to occur around the bend.

Thus, as in the present invention, by providing the folding line portion 7 in the middle of the extending portion, it becomes possible to neatly fold at a desired position without generating wrinkles or the like in the periphery.
It should be noted that the fold line portion 7, the straight valley fold line portion 4, and the curved mountain fold line portion 5 are all engraved or perforated at the same time as die cutting or the like. A means for facilitating the bending is formed by forming a crease or using a crease and a perforation together.
In addition, by providing two fold line portions 7, the rear end side of the opening of the footwear can be retained in a more accurate shape.

  Further, a locking portion 8 is provided at the extended end portion of the rear shape retaining portion 3, and this locking portion 8 is provided in the vicinity of the rear end on the other end side in the width direction of the front shape retaining portion 2. The engaging projection 9 can be engaged with the vicinity of the base. Also in this case, it is possible to prevent the inside of the footwear from being damaged if the outer peripheral edge portions (portions that contact the insole) of the locking portion 8 and the locking projection 9 are rounded.

  Further, with the engaging portion 8 engaged with the vicinity of the base of the engaging protrusion 9, as shown in FIG. 2 (a), the rear shape retaining portion 3 conforms to the shape around the mouth of the footwear. In this state, a portion corresponding to the buttocks is cut off.

The state of assembling the footwear shape retainer 1 as described above is as shown in FIG. 2, with the valley fold line portion 4 of the front shape retention portion 2 being a valley fold and the mountain fold line portion 5 being a mountain fold. By doing so, the central portion in the width direction is naturally curved so as to protrude upward, and at the same time, the rear side of the front shape retaining portion is bent at an angle upward with the mountain fold line portion as a boundary.
At this time, as shown in FIG. 4, in the skeleton of the foot, the thickness of the bone is greatly changed near the boundary between the rib and the metatarsal bone, that is, the height of the foot is high. Therefore, by providing the mountain fold line part 5 near the boundary between the ribs and metatarsals when bent, the three-dimensional shape of the instep with respect to the front-rear direction can be more faithfully reproduced, and the shape can be retained in a more accurate shape. can do.
As described above, by adjusting the degree of curvature of the mountain fold line portion (increasing or decreasing the curvature radius), the folding angle behind the mountain fold line portion can be appropriately set depending on the type of footwear. it can.

FIG. 3 shows a state where such a footwear retainer 1 is inserted into the footwear and assembled, and even in the case of the shoe 10 as shown in FIG. 3 (a), as shown in FIG. 3 (b). Even in the case of the perfect sandals 11, the shape of the upper part of the footwear is faithfully reproduced, so that the shape of the regular footwear can be accurately retained, and the rear shape retaining part 3 can be Since the corresponding part is excised, it does not directly contact the insole, so there is no problem that deteriorates the quality of footwear even when a soft material is used for the insole.
In addition, since the assembly is easy, workability during footwear production is also improved.

  In addition, the shape of the holder 1 shown by the solid line in FIG. 1 is for the sandal 11, and in the case of the shoe 10, it is preferable that the tip end portion has the shape shown by the broken line in FIG.

In addition, this invention is not limited to the above embodiments. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.
For example, the material of the shape retainer 1 is an example.

  As a shape retainer for footwear, it faithfully reproduces the shape of the footwear, and there is no risk of damaging or damaging the bottom of the footwear, and it is easy to assemble and improve productivity. Widespread use is expected.

DESCRIPTION OF SYMBOLS 1 ... Foot shape retainer, 2 ... Front shape retention part, 3 ... Rear shape retention part, 4 ... Valley fold line part, 5 ... Mountain fold line part, 5 '... Mountain fold line part when folded (The line corresponding to the vicinity of the border between the ribs and the metatarsals), 7 ... the fold line part, 8 ... the locking part.

Claims (3)

A footwear shaper molded from a bendable flat plate and inserted into the footwear,
The shape retainer includes a semi-elliptical front shape retaining portion that retains the front portion of the footwear, and a rear shape retaining portion that retains the rear portion of the footwear,
In the front shape retaining portion, a linear valley fold line portion that traverses in the width direction, and
On the rear side of the valley fold line portion, there is provided a mountain fold line portion that traverses in the width direction and curves in a protruding shape toward the rear,
When the valley fold line part is a valley fold, the mountain fold line part is a mountain fold, and the front shape retaining part is folded in the width direction,
The mountain fold line is the part corresponding to the border between the ribs and metatarsals in the foot skeleton,
In addition, the shape retainer for footwear, wherein the rear side of the front shape retaining portion is bent at an angle upward with the mountain fold line portion as a boundary. The rear shape-retaining portion comprises an extending portion extending rearward from one end in the width direction on the rear side of the front shape retaining portion,
At the tip of this extension part, a locking part for locking in the vicinity of the other end side in the width direction of the front shape retaining part is provided,
2. The shape retainer for footwear according to claim 1, wherein the extension portion is assembled in a state along a circumference of a mouth of the footwear. The footwear according to claim 1 or 2, wherein at least one mountain folding line portion for folding forward is provided at an intermediate portion of the extension portion of the rear shape retaining portion. Shape retainer.

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