JPS595363Y2 - shoe cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shoe lace cover that fits well to the last of the foot formed by the molding device and does not expose the shirring folds to the outside.

Conventionally, there was a California-style jacket in which the lower edge of the jacket and the periphery of the insole were sewn all around to form a bag-like shape, but because the length of the lower edge of the jacket was longer than the length of the insole, At the time of suturing, the length of the lower periphery of the laces was made to match the length of the inner sole by making pleats around the lower periphery of the laces and reducing its length, resulting in a bag-like structure.

In particular, since the toe portion is severely curved, there is a large discrepancy in the lengths of the two, and it was necessary to make the lengths match by providing many folds in this area.

However, in areas with large curvature, the obscene pleats are often formed to be long, and therefore, when the sole is attached to this curvature by injection molding or other appropriate means, the obscene pleats are not attached to the bottom. The sole of the shoe was exposed and the appearance of the shoe was seriously impaired.

For this reason, a tape-like part rising from the sole is formed integrally with the sole of the shoe on the joint surface between the lower end of the lace and the sole, or a hoxing tape is surrounded to prevent the folds from forming. was preventing exposure.

However, especially in athletic shoes used for jogging, running, etc., the foot is often bent repeatedly, and the tape-like part or hox Due to the tape's upright structure, it is not suitable for these movements, and when it is bent, that part protrudes outward in a dogleg shape, and this repeated bending causes the tape to become attached to the tape in this part. There is a risk of peeling or cracking, which reduces the durability of the shoe.

The present invention solves the above-mentioned conventional drawbacks, and will be explained in detail based on the drawings.The lower peripheral edge of the sleeve 1 and the outer periphery of the insole 2 are sewn together, and the lower part 3 of the sleeve 1 is sewn together. A reinforcing sheet 5 that covers the entire circumference of the sewn portion 4 from the outside is bonded to have a non-bonding portion 15 between the cover 1 and the reinforcing sheet 5,
A large number of loops 7 made of thread are provided around the entire circumference of the lower edge 6 of the reinforcing sheet 5, and a string 8 is inserted through the loops 7 to form a shoe cover.

The insole 2 can be made of materials such as cloth, paper, synthetic leather, natural leather, synthetic resin leather, or synthetic resin sheet, but if you are planning to design it mainly for jogging, running, etc., use a rigid material. A flexible material having a certain material or thickness, such as floating fabric, high pressure cardboard, etc., is applied.

The reason for this is that in the case of granular shoes, most of the shock absorption performance when the shoe touches the ground depends on the elasticity of the sole, but when exercising such as jogging or running, the sole structure (especially the midsole) If the elastic modulus of the shoe is set high, the impact upon contact with the ground will be transmitted to the sole of the shoe through the midsole, causing the foot to temporarily collapse toward the sole of the shoe, which will repeat many times during running, which will increase fatigue. This is because the advantage of alleviating the impact on the ground replaces the disadvantage of increased fatigue, which is not desirable.

In addition, even for ordinary shoes, using a rigid material or a thick flexible material as the material for the insole 2 increases the shape retention of the shoe and helps ensure quality without deformation. .

Suitable materials for the cover 1 are cloth, synthetic resin leather, synthetic leather, natural leather, etc., which are comfortable to wear, and these materials may be used alone or in combination. A resin film, a synthetic resin sponge sheet, etc. may be added and used in combination.

The stitching between the sleeve 1 and the insole 2 is carried out by sewing together the lower circumferential edge of the former and the outer circumferential edge of the latter, and various forms of this stitching structure are conceivable.

For example, as shown in FIG. 3, the seam allowances 9 are aligned in the shape of palms together, and the seam allowances 9 are positioned toward the sole 10 and sewn to form the sewn portion 4.

Alternatively, the seam allowance portion 9 may be sewn in such a manner that the seam allowance portion 9 is located on the inside in contact with the foot in a manner that the palms are joined together.

In this case, there is a risk that the seam allowance 9 may come into contact with the foot inserted into the shoe cover 1, making it uncomfortable to wear, so take measures such as laying down the seam allowance 9 and fixing it with adhesive. Good too.

Of course, even when the seam allowance portion 9 is positioned toward the sole 10 side, measures such as turning it sideways and fixing it with an adhesive or the like may be performed in the same manner.

If the material used for the insole 2 is rigid or flexible but thick, the seam allowance 9 will close to the sole 10 when sewn in the shape of the palms as described above. Regardless of whether it is located on the side or the side that touches the foot,
Due to the characteristics of the material of the insole 2, the seam allowance 9 does not stand up and has a horizontally lying structure facing outward, so the process of turning the seam allowance 9 sideways as described above is not necessary. No longer needed.

In addition, the seam cover 1 and the insole 2 can be sewn together by, for example, as shown in FIG. You can go.

Alternatively, the edges of both edges 9.9 may be brought together and sewn together.

When the insole 2 is made of a rigid or thick material, such overlapping stitches or butt stitches are easier to perform than stitching in a closed palm pattern.

The reinforcing sheet 5, which is joined to the lower part 3 of the sleeve 1 all around by sewing, adhesive, etc., and covers the seam 4 between the sleeve 1 and the insole 2, is made of woven fabric, non-woven fabric, etc. Fabric, synthetic leather, natural leather, synthetic resin leather, synthetic resin sheet, etc. are suitable, and these may be used alone or in combination.

If the material of the reinforcing sheet 5 is rigid and thick, it will allow the unevenness to be exposed to the surface when covering the folds 11 caused by sewing the lace cover 1 and the insole 2. It's very convenient.

The connection 13 between the reinforcing sheet 5 and the reinforcing sheet 1 is partial, with a non-bonding portion 15 between the reinforcing sheet 1 and the reinforcing sheet 5.
For example, the upper edge 12 of the reinforcing sheet 5 is joined 13 by sewing or the like, but below it, an auxiliary joining means 14 such as auxiliary sewing is applied, and in most cases, both parts 1.5 are made into a non-joined part 15. shall be.

The reinforcing sheet 5 does not have to be a continuous sheet over the whole, for example, it can be divided into several parts such as a toe piece 5a for the toe part, a side piece 5b for the side part, and a heel piece 5C for the heel part. 13, and the entire circumference of the lower part 3 of the cover 1 may be coupled.

The loop 7 provided around the entire circumference of the lower edge 6 of the reinforcing sheet 5 is sewn together with the string 8 that is passed through the lower edge 6 of the reinforcing sheet 5, thereby obtaining a normal string type cover. Consists of.

The lower edge 6 of this reinforcing sheet 5 may be temporarily bonded to the lower surface of the midsole 2 partially, for example, at the part corresponding to the non-stepping part, to make it easier to hang the molding device onto the foot last. .

In the example shown in FIG. 2, the cover A of the present invention is used for injection or injection molding.

In other words, this example is a pair of shoes for jogging, with a shoe cover of 1
is made of a flexible cloth, and a shoe opening 16 made of leather is sewn inside the shoe opening of the shoe cover 1, and a cushion core 17 made of urethane foam is sealed inside this to provide a comfortable fit for the foot of the shoe opening. It is considered to be in good condition.

In addition, a cup inner sole 18 having a curved surface that matches the curved surface of the sole of the foot is used to improve fit with the foot.

A reinforcing sheet 5 of velor-like natural leather is sewn to the lower part 3 of the lace cover 1 at its upper edge 12.

This reinforcing sheet 5 is divided into a toe piece 5a, a side piece 5b, and a heel piece 5C.
are joined together by auxiliary joining means 14 such as reinforcing stitches, and the edges of the toe piece 5a, the side piece 5b, and the heel piece 5C are all aligned and form a straight line. It has become.

These three types 5a. A loop 7 is formed with a thread around the circumferential edge of the linear lower edge 6 formed by each edge of 5b and 5C, and a string 8 is inserted into this loop 7, and this string 8 doubles at the tip of the toe. They are arranged around the entire circumference of this lower edge 6.

Both ends B a and B a of the string 8 are exposed outside the loop 7 .

A seam allowance 9 corresponding to the lower circumferential edge of the sash 1 and a seam allowance 9 corresponding to the circumferential edge of the midsole 2 are sewn in a vertically overlapping manner.

This midsole 2 is made of high pressure cardboard.

By sewing with this sewing part 4, especially the toe part 1
There are visible folds 11 extending upwards, but
By joining 13 the upper edge 12 to the lower part 3 of the cover 1 by sewing etc. and leaving an unjoined part 15 in the middle, it is covered with the joined reinforcing sheet 5. The extending folds 11 are completely hidden.

The thus-formed shoe cover A is fitted into a foot mold of an injection or injection molding device, and the string 8 is hung by pulling both ends 8a of the string 8 in close contact with the foot mold, and the midsole 10 is attached to the bottom of the shoe cover A.
a and outsole 10b are integrally bonded together by injection molding a resin such as polyvinyl chloride or polyurethane.

The outsole 10b is made of a material such as rubber and is separately molded by press molding, etc., and this outsole 10b is placed on the bottom mold of an injection or injection molding machine, and the midsole 10a is placed on top of the bottom mold of polyvinyl chloride. The cover A and the outsole 1 are made by injection molding or injection molding of resin such as urethane or urethane.
It may be configured such that it is integrally connected to the 0b at the same time as the molding.

In this example, since the sole 10 is constructed by injection molding or injection molding, the molded sole 10 is integrally adhered to the lower surface of the midsole 2 and is attached to the bottom of the reinforcing sheet 5 extending to the lower part 3 of the shoe cover 1. The injected or injected sole material penetrates between the sewn portion 4 and the lower surface of the midsole 2, which are hidden by the peripheral edge of the edge 6 and the lower edge of the lower edge 6, and the 6th periphery of the lower edge where the reinforcing sheet 5 extends. Connect the end to the sole 1
Since the sole 10 and the shoe cover A are buried in the shoe 0, there is an advantage that the adhesive force between the shoe sole 10 and the shoe cover A is increased.

Next, the example shown in FIG. 3 shows a case where a shoe is obtained by pressure-molding a sole 10, which is made by press-molding rubber or the like in advance, onto the shoe cover A of the present invention using an adhesive or the like. be.

In this example, the lower periphery of the sash 1 and the outer periphery of the insole 2 are sewn together in a gassho style; however, the sash 1 is made of soft fabric, and the insole 2 is made of hard high-pressure cardboard. Therefore, the sewn portion 4 projects diagonally outward and faces laterally.

The upper edge 12 is sewn to the lower part 3 of the cover 1, and the unjoined part 15 is sewn in the middle.
By doing so, the core sole 19 is bonded to the lower surface of the midsole 2 in order to eliminate the thickness of the lower peripheral edge of the reinforcing sheet 5 that is bonded 13.

The sole 10 is bonded to the lower edge 6 of the reinforcing sheet 5 and the lower surface of the core sole 19.

The reinforcing sheet 5 hides the folds 11,
It is not exposed to the outside.

As in the above two examples, when the shoe cover A to which a rigid material is applied as the insole 2 is to be used for injection molding, injection molding, compression molding, etc. of the sole 10, the lower part of the shoe cover is generally It is necessary to make the folds as small as possible, eliminate the distortion of the folds, etc., and adjust the outer shape to the specified shape.If this work is incorporated into the normal cycle of the above-mentioned molding such as injection molding, the speed of the process must be considerably reduced. Therefore, this shaping work is done in advance by suspending and shaping the foot into a separately prepared foot shape, separate from the cycle, and using the already shaped foot to perform molding such as injection molding during the molding cycle. It is customary to re-hang the device onto the foot mold that has been installed and perform the molding process again, but according to the present invention, even if the foot covering A is directly hung onto the foot mold of the molding device, the shape of the foot molding 1 will not change. Since the reinforcing sheet 5 is bonded to the lower part 3, there is no risk of exposing the folded folds 11 to the outside, and by creating a non-bonded part 15 in the middle, the unevenness of the folded folds 11 can be further reduced by the reinforcing sheet. Since it is not exposed on the surface of the folds 5, there is no need to worry about the negative effects of the folds 11.
Therefore, it has the advantage of being able to perform molding without slowing down the normal molding cycle.

In the present invention, although the lower circumferential edge of the cover and the outer circumferential edge of the insole are sewn together, a reinforcing sheet is bonded to the lower part of the cover over the entire circumference, so that the lower circumferential edge of the cover and the inner sole are sewn together. Even if the folds are extended due to the stitching, they are hidden by the reinforcing sheet and are not exposed to the outside, so the appearance of the shoe is not impaired.

In addition, there is no need to adhesively install a tape-like part extending from the sole of the shoe or hoxing tape to the joint surface of the shoe sole to hide the folds, and the reinforcing sheet and the shoe sole can be used together. Since it is partially bonded to the lower part, the unbonded part becomes a buffer area, and despite the bending that the cover is subjected to when using the grain layer, the reinforcing sheet prevents damage caused by protruding in a dogleg shape. In order to avoid damage and peeling of this reinforcing sheet, and to improve the comfort of wearing, we use a flexible cover.
Since the reinforcing sheet is coated and bonded to the surface of the shoe to strengthen its waist, it is possible to prevent damage to the lower part of the shoe that receives impact, increasing the durability of the shoe.

The shoe cover and the insole are sewn together, and a reinforcing sheet equipped with a string-type tightening device made by inserting strings into numerous loops is attached to the lower part of the shoe cover, which can be used to create a foot shape. When suspended in the mold, it is easily and closely fixed to the foot mold, and there is no risk of shifting due to external forces such as injection pressure or pressing force of the device during molding, and the mold can be molded with a predetermined external shape. Furthermore, during the sole molding cycle, there is no need for a shaping step to make the outer shape of the shoe sole as specified, so the cycle can be shortened, molding can be facilitated, and the cost of the shoe can be reduced.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one example of the product of the present invention, Fig. 2 is an end view of the product taken along the line B-B in Fig. 1 when the cover body of Fig. 1 is used for injection or injection molding, and FIG. 3 is an end view of another example of the product of the present invention used for bottom pressure bonding. 1...Flip cover, 2...Insole, 3...1...
... Lower part, 4 ... Seam part, 5 ... Reinforcement sheet, 6 ... Lower edge, 7 ... Loop, 8 ...・String, 15...Unbonded part, A・
.....the subject.

Claims (1)

[Scope of utility model registration request] The lower periphery of the lace cover and the outer periphery of the insole are sewn together, and a reinforcing sheet covering the entire circumference of the sewn portion from the outside is provided at the lower part of the lace cover so that there is a non-bonded portion between the lace cover and the reinforcing sheet. A shoe cover comprising a number of loops made of thread that are bonded together and run around the entire lower edge of the reinforcing sheet, and a string is inserted through the loops.