JP7114830B2 - Foot covering and method for manufacturing foot covering - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applied.

TECHNICAL FIELD The present invention relates to a jig for covering a foot made of a knitted fabric, and more particularly to a foot covering that is excellent in shape stability and comfortable to wear, and a method for manufacturing the foot covering . Here, the foot coverings according to the present invention include those that come into direct contact with the skin of the foot (without sandwiching a sock or the like) and those that come into direct contact with the skin of the foot (with a sock or the like sandwiched therebetween). In addition, foot coverings according to the present invention include footwear mainly worn outdoors (so-called outdoor shoes) and footwear mainly worn indoors (so-called indoor shoes). .

Slippers are representative foot coverings for indoor shoes. This slipper consists of an insole member that directly contacts the sole of the foot when the foot is placed thereon, an instep member formed in a shape that wraps around the toes and the instep, and a lower side of the slipper that directly contacts the floor surface. It is composed of a bottom member that is in contact with, and a support member that positions and connects the insole member, the instep member, and the bottom member.
In such slippers, since the rear part (heel part) of the foot is exposed without being covered, there is a problem that it is easy to come off unless some force is applied to the tip of the foot when walking. Especially when housewives move frequently for housework such as cooking and cleaning at home, the slippers often tend to come off and become unstable, and slip on the kitchen floor. There is a danger of falling over.

In order to solve the problem that slippers tend to slip off, indoor slippers (room shoes) have been used that are similar in shape to shoes that are difficult to slip off from the feet by increasing the portion that covers the feet.
For example, Japanese Patent Application Laid-Open No. 2016-049337 (Patent Document 1) filed by the applicant of the present application discloses room shoes that are comfortable to wear, less slippery, and less stuffy. The room shoes disclosed in Patent Document 1 are foot coverings for indoor use, covering the instep, the heel, and the sole, and exposing the ankle. a heel part covering the heel and a sole part covering the sole, an opening for putting in and taking out the foot is provided on the opposite side of the sole part, and the instep part includes a mesh fabric. and/or wherein the sole is formed from a quilted fabric.

JP 2016-049337 A

The room shoes disclosed in the above-mentioned Patent Literature 1 have been well received because they are comfortable to wear, less slippery, and less stuffy. However, since the fabric is sewn and formed, the waist of the fabric may weaken over time and it may be difficult to maintain the overall shape when not attached to the foot (for example, the sole and instep of the foot). When the space for inserting the toe tip between is closed). For this reason, the shape of the room shoes collapses when you put them on, so you may have to adjust the shape of the room shoes by hand and widen the opening to wear them. could have been difficult. In the room shoes disclosed in Patent Document 1, the applicant of the present application diligently developed room shoes with excellent shape stability that can maintain the overall shape even when the shoes are not worn on the foot even over time.

In addition, foot coverings (room shoes as an example) with large openings (covering the toes of the toes but not covering most of the instep) are manufactured (inexpensively and in large quantities) by a circular knitting machine (sock knitting machine). That is, since the opening area is considerably different from that of socks having an opening about the size of an ankle, it is quite difficult to integrally knit a whole circumference part by full rotary knitting using a circular knitting machine. rice field.

Furthermore, the above-mentioned problems of indoor shoes represented by such room shoes are not limited to foot coverings for indoor use. It also applies to the case of abutment.
The present invention was developed in view of the above-mentioned problems, and the purpose thereof is to provide excellent shape stability that can maintain the overall shape even when it is not worn on the foot even over time. It is another object of the present invention to provide a foot covering and a method for manufacturing the foot covering . Another object of the present invention is to provide a foot covering which is integrally knitted using a circular knitting machine and which can be provided with a large opening, and a method for manufacturing the foot covering . That is.

In order to achieve the above object, the foot covering according to the present invention employs the following technical means.
That is, the foot covering according to the present invention comprises an instep part covering the instep including at least the toes of the toes, a side part covering the left and right sides of the foot, a heel part covering the heel, and a sole part covering the sole. The formed foot covering is provided with an opening for inserting and removing the foot on the opposite side of the sole, and a half turn is performed using a circular knitting machine using a yarn containing heat-fusible fibers as a knitting yarn. A semi-finished product that is integrally knitted by knitting without a whole circumference and has two each of the instep part, the foot side part, the heel part, and the sole part in line symmetry, Semi-finished products that are symmetrical about the center line of the instep side of the opening when placed are stacked on the instep portions, the foot side portions, the heel portions, and the sole portions. In addition, the overall shape of the foot covering is formed, and the overall shape can be maintained in a state in which the foot covering is not worn. Here, semi-finished products are generally known as incomplete products in the middle of the manufacturing and processing processes, and intermediate products that have not been completed as foot coverings, which are the final products. To tell.

To provide a foot covering excellent in shape stability capable of maintaining the overall shape of the foot covering in a state in which the foot covering is not attached to the foot even over time, and a method for manufacturing the foot covering. can be done. Further, according to the foot covering of the present invention, a foot covering which is integrally knitted using a circular knitting machine and which can be provided with a large opening, and a method for manufacturing the foot covering are provided. can do.

1 is a schematic perspective view of room shoes according to an embodiment of the present invention; FIG. Room shoes in FIG. 1, (A) side view seen from arrow 2A in FIG. 1, (B) side view seen from arrow 2B in FIG. 1, (C) seen from arrow 2C in FIG. (D) is a rear view seen from arrow 2D in FIG. 1. It is a figure for demonstrating the manufacturing process of the room shoes of FIG.

Hereinafter, room shoes 100 according to an embodiment of the present invention will be described in detail with reference to the drawings as an example of foot coverings according to the present invention. There are various structures of room shoes, and the present invention is not limited to a specific structure. It does not matter what kind of structure the room shoes have, as long as they are provided, and what kind of patterns the fabrics that make up the room shoes have and how they are sewn. Therefore, the structure itself of this room shoe 100 shown below is merely an example.

Furthermore, the foot covering according to the present invention is a jig for covering the foot composed of a knitted fabric, and is particularly excellent in shape stability and comfortable to wear. A knitted foot covering. In this regard, the foot coverings according to the present invention include those that directly contact the foot skin and those that indirectly contact the foot skin. Footwear mainly worn outdoors (so-called outdoor shoes) and footwear mainly worn indoors (so-called indoor shoes) are included. Therefore, the room shoe 100 according to the embodiment of the present invention is only an example.

1 is an overall perspective view of room shoes 100 according to the present embodiment, FIG. 2(A) is a side view seen from arrow 2A (see FIG. 1, hereinafter omitted), and FIG. 2(B) is an arrow 2B. 2(C) is a front view as seen from arrow 2C, and FIG. 2(D) is a rear view as seen from arrow 2D. 1 and 2(A) to 2(D ) are diagrams showing the state in which the room shoes 100 are not worn. 3 shows a diagram for explaining the manufacturing process of the room shoes 100. As shown in FIG. 3(A) to 3(D) show room shoes 200 (shown in FIG. 3(F)) having a narrower opening area than room shoes 100 (shown in FIG. 3(E)) from semi-finished products. It is a figure for demonstrating the manufacturing process along a time series. 3(A) to 3(D) are diagrams showing semi-finished products corresponding to the room shoes 200 shown in FIG. 3(F). The first, second, and third features provided are the same as those of the room shoes 100 shown in FIGS. The process is the same for room shoes 100 and 200 (only the area of the opening is different).

As shown in these figures, this room shoe 100 is generally a foot covering for indoor use, and includes an instep part 110 that covers the instep, a foot side part 120 that covers the left and right sides of the foot, and a heel. It is formed by a heel portion 130 to be covered and a sole portion 140 to cover the sole, and an opening 150 is provided on the opposite side of the sole portion 140 for putting in and taking out the foot. The instep part 110 may cover at least the instep including the toes of the toes, and may have a large opening 150 like the room shoes 100 shown in FIG. 3(E). Alternatively, a small opening 250 may be provided like room shoes 200 as shown in FIG. 3(F). That is, the opening 150 of the room shoes 100 shown in FIG. 3(E) expands the opening 250 of the room shoes 200 shown in FIG. should cover at least the top of the foot, including the toes of the toes. In this respect, the room shoe 100 can be said to have a large opening.

Characteristically, the instep portion 110, the side portion 120, the heel portion 130, and the sole portion 140 are knitted using knitting yarn containing heat-fusible fibers (first feature). , the overall shape can be maintained in a state of not being worn on the foot (second feature). Here, the sole portion 140 is a surface that abuts on the sole skin, and when the sole rubber G that abuts on the floor surface is provided, the sole portion 140 does not abut on the floor surface. If the sole rubber G that contacts the surface is not provided, the sole portion 140 will contact the floor surface. When the sole rubber G is not provided, it is necessary to reinforce the sole 140 by constructing it with multiple knitted fabrics. It is also preferable to configure it with a knitted fabric. In addition, in the room shoes according to the present invention, the instep portion 110, the foot side portion 120, the heel portion 130 and the sole portion 140 are all formed of double knitted fabric.

Furthermore, what is characteristic is that the instep part 110 and the foot side are integrally knitted by half-turn knitting using a circular knitting machine using yarns containing heat-fusible fibers as knitting yarns. This room shoe 100 is manufactured through a semi-finished product having two each of the portion 120, the heel portion 130 and the sole portion 140 in line symmetry (third feature). Here, the semi-finished products are those shown in FIGS. 3(A) to 3(D), which are immediately after being knitted by half-turn knitting using a circular knitting machine. More specifically, the line symmetry of this semi-finished product is such that when this semi-finished product is placed on a plane, the instep side portion of the opening 150 is aligned with the center line as shown in FIGS. 1 and 3A. line symmetry. Then, as shown in FIGS. 3(A) to 3(D), the instep portions 110, the side portions 120, the heel portions 130, and the sole portions 140 of the semi-finished product are superimposed on each other. It forms the shape of the entire double room shoes.

In addition, the heat-fusible fibers in the present invention are fused to each other at the contact portion of the heat-fusible fibers by heat setting described later, so that the fibers are not easily separated from each other, and the state of not being attached to the foot, which is the second feature. It is not limited as long as it can maintain the overall shape. For example, it may be what is called heat-fusible fiber or heat-fusible fiber. In the following description, these fibers are represented by heat-fusible fibers.

Room shoes 100 will be described in further detail.
More specifically, the instep part 110 forming the room shoes 100 includes an instep outer knitted fabric 110A on the outer side (opposite side to the skin contact side) that covers the instep and a skin side foot that covers the instep. The knitted fabrics (instep outer knitted fabric 110A and instep inner knitted fabric 110B), which are composed of the instep knitted fabric 110B and form the instep part 110, are formed on the opening 150 (more specifically, the instep side of the opening 150). It is a double part because it is folded back at the line symmetrical center line of the semi-finished product).

More specifically, the foot side portion 120 forming the room shoe 100 includes an outer foot side knitted fabric 120A (opposite side to the skin contact side) and an inner foot side knitted fabric 120B on the inner side (skin contact side). , and the leg side portion 120 is composed of a double knitted fabric.
More specifically, the heel portion 130 forming the room shoes 100 is composed of an outer heel knitted fabric 130A on the outside (opposite side to the skin contact side) and an inner heel knitted fabric 130B on the inner side (skin contact side). The heel portion 130 is composed of a double knitted fabric. Further, a reinforcing knitted fabric is provided on the opening 150 side of the heel portion 130 . That is, the outer heel knitted fabric 130A is provided with a reinforcing knitted fabric 130AC, and the inner heel knitted fabric 130B is provided with a reinforcing knitted fabric 130BC.

More specifically, the sole part 140 forming the room shoes 100 is composed of an outer sole knitted fabric 140A on the outer side (opposite side to the skin contacting side) and an inner sole knitted fabric 140B on the inner side (skin contacting side). The sole part 140 is composed of a double knitted fabric. A sole rubber G made of hard rubber or the like is adhered to the sole outer knitted fabric 140A of the sole portion 140. As shown in FIG.
Room shoes 100 having such a configuration have, as the first and third characteristics, instep 110, foot side 120, heel 130, and sole 140, which are knitted with heat-fusible fibers. A semi-finished product is produced by using yarn and knitting by half-rotation knitting using a circular knitting machine. The portions 110, the side portions 120, the heel portions 130, and the sole portions 140 are overlapped to form the shape of a full-duplex room shoe. That is, the instep part 110 is formed of an instep outer knitted fabric 110A and an instep inner knitted fabric 110B knitted using knitting yarns containing heat-fusible fibers, and the foot side part 120 is formed of a heat-fusible knitted fabric. The heel portion 130 is formed of the outer leg side knitted fabric 120A and the inner side knitted fabric 120B knitted using the knitting yarn containing the fiber, and the heel portion 130 is knitted using the knitting yarn containing the heat-fusible fiber. It is formed of a knitted fabric 130A and an inner heel knitted fabric 130B, and the sole portion 140 is formed of an outer sole knitted fabric 140A and an inner sole knitted fabric 140B knitted using knitting yarns containing heat-fusible fibers. , is formed of a full-duplex knitted fabric.

Then, the semi-finished product integrally knitted without the entire circumference portion by half-rotation knitting using a circular knitting machine using the yarn containing the heat-fusible fiber as the knitting yarn has the shape of the room shoe 100 shown in FIG. 1 as a whole. 3(A) to 3(D). Before or after heat setting to maintain the overall shape even when the foot is not worn, a sole rubber G made of hard synthetic rubber or the like may be adhered. do not have.

This heat setting uses the thermal properties of the heat-fusible fibers contained in the knitting yarn to set the fibers in such a way that the fibers are fused together at the contact portion of the heat-fusible fibers and are difficult to separate. The purpose is to maintain the shape of the shoe 100 . This heat setting is performed under desired conditions (temperature, time, etc.) corresponding to the heat-fusible fibers. In this heat setting, the instep part 110, the foot side part 120, the heel part 130, and the sole part 140 (whether or not the sole rubber G is bonded) after the semi-finished product is manufactured into the shape of room shoes. ) is attached to a metal last and heat-set according to desired conditions (temperature, time, etc.).

In addition, heat fusion means a state in which the heat-fusible fibers are fused and adhered to each other at the contact portion of the heat-fusible fibers due to heat or heat and pressure from the outside. It refers to a state in which at least some of the fibers are fused and adhere to each other, or a state in which the fibers are adhered to each other even if they are not fused.
Since the knitting yarn containing heat-fusible fibers is knitted (first feature) and heat-set in this manner, even when the foot is not attached to the foot as shown in FIG. The overall shape can be maintained (second feature). Here, this room shoe 100 can maintain its overall shape even if it is not worn on the foot even if it changes with time. It is characterized by having shape stability that conventional room shoes do not have.

The room shoes 100 having the first feature and the second feature as described above are manufactured as follows through the semi-finished product which is the third feature.
(1) Knitting structure and yarn use Plating (plating yarn knitting) using a sock knitting machine (circular knitting machine)
・Front yarn: 150 denier polyester two-ply yarn (approximately 300 denier overall)
Back yarn: 150 denier polyurethane (monofilament) + 20 denier polyurethane yarn covered with 150 denier polyester yarn (FTY (Filament Twisted Yarn))
(2) Semi-finished product by half-rotation knitting A semi-finished product immediately after being integrally knitted by half-rotation knitting using a sock knitting machine (circular knitting machine) without providing a whole circumference part has an instep part 110 as its characteristic. , a foot side portion 120, a heel portion 130 and a sole portion 140, two each of which are axisymmetrically arranged. The part on the instep side of has a line symmetrical shape with the center line.

Such a semi-finished product is integrally and continuously knitted by half-rotation knitting using a sock knitting machine (circular knitting machine) without having a full-circumference portion (cylindrically covering the leg by full-rotation knitting). between the instep part 110 and the foot side part 120 (more specifically, the switching line SAT on the toe side of the outer knitted fabric and the switching line SBT on the toe side of the inner knitted fabric), and the foot A switching line S (more specifically, a heel-side switching line SAH in the outer knitted fabric and a heel-side switching line SBH in the inner knitted fabric) is provided between the side portion 120 and the heel portion 130 .
(3) Forming the overall shape of room shoes from the semi-finished product, as shown in FIGS. The entire shape of the full-duplex room shoes 100 is formed by overlapping the sole portions 140 with each other.

More specifically, but not limited to, as shown in FIG. 3(A), the heel portion (inner heel knitted fabric 130B) of one side (inner side B) of the semi-finished product is turned inside out. Next, as shown in FIG. 3(B), one (inner side B) heel portion (inner heel knitted fabric 130B) that has been turned inside out is overlaid on the other (outer side A) heel portion (outer heel knitted fabric 130A). Thereby, the heel portion 130 formed of the double knitted fabric is formed.
Next, as shown in FIG. 3(C), one (inside B) instep (inner instep knitted fabric 110B) is turned inside out while the other (outside A) instep (outer instep knitted fabric 110A) is turned inside out. Instep 110 formed of a double knitted fabric is formed by embedding in. Next, as shown in FIG. 3(D), one (inner side B) foot side portion (foot side inner knitted fabric 120B) and sole portion (sole inner side knitted fabric 140B) are attached to the other (outer side A) foot. The entire room shoe 100 is formed by overlapping the side portion (foot side outer knitted fabric 120A) and the sole portion (sole outer knitted fabric 140A).

(4) Sole rubber: Synthetic rubber for shoe soles used for ordinary athletic shoes or indoor shoes (5) Heat setting conditions: Knitted room shoes on a shoe stand for setting (metal mold for foot shape) The room shoes 100 manufactured in this way have the instep 110, the side 120, the heel 130 and the sole 140 heat-melted. In addition to being knitted using knitting yarn containing adhesive fibers (first feature), it is possible to maintain the overall shape (for example, like indoor shoes) when not worn on the foot (second feature). feature). In the manufacturing process, the room shoes 100 are manufactured through a semi-finished product immediately after being knitted by half-turn knitting using a circular knitting machine (third feature), and this semi-finished product is shown in FIG. )-As shown in FIG. 3(D), the instep portions 110, the side portions 120, the heel portions 130, and the sole portions 140 are overlapped to form the shape of the entire double room shoes. there is In this way, semi-finished products integrally knitted by half-rotation knitting using a circular knitting machine without a full-circumference part are semi-finished products suitable for room shoes that can be provided with large openings. Room shoes with a large opening can be manufactured at low cost using a sock knitting machine (circular knitting machine).

As described above, according to the room shoes 100 and the manufacturing method of the room shoes 100 according to the present embodiment, which are an example of the foot covering of the present invention, the overall shape is maintained even when the shoes are not worn on the foot even with the passage of time. It is possible to Further, according to the room shoes 100 according to the present embodiment, they can be integrally knitted using a circular knitting machine at a low cost and have a large opening.
It should be noted that the embodiments disclosed this time should be considered as examples in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the meaning and range of equivalents of the scope of the claims.

INDUSTRIAL APPLICABILITY The present invention is suitable for a foot covering made of a knitted fabric, and is capable of maintaining its overall shape even when it is not attached to the foot even over time, and has a foot covering with a large opening. It is particularly preferable in that the fitting can be manufactured at low cost using a sock knitting machine (circular knitting machine).

100 room shoes 110 instep 120 foot side 130 heel 140 sole 150 opening

Claims (3)

A foot covering formed by an instep covering the instep including at least the toes of the toes, a side portion covering the left and right sides of the foot, a heel covering the heel, and a sole covering the sole,
An opening for inserting and removing the foot is provided on the opposite side of the foot sole,
The opening is formed by an instep-side opening and a heel-side opening,
A semi-finished product integrally knitted by half-rotation knitting using a circular knitting machine using yarns containing heat-fusible fibers, without having a part covering the entire circumference of the tubular leg by full-rotation knitting. The instep part, the foot side part, the heel part, and the sole part are provided in line symmetry, and the planar shape of the semi-finished product is substantially U-shaped when placed on a plane. A hole forming the heel-side opening is provided at positions facing each other on the open side of the substantially U-shape, and the instep-side opening, which is the part on the instep side of the opening, is line symmetrical with respect to the center line. The instep parts, the foot side parts, the heel parts, and the sole parts of the semi-finished product are overlapped to form the shape of the entire foot covering, and are connected to the heel side opening. The foot covering is characterized in that the instep-side opening is formed by the center line, and the heat-fusible fibers allow the foot covering to maintain its overall shape when not attached to the foot. A method of manufacturing a foot covering comprising an instep covering the instep including at least the toes of the toes, a foot side covering the right and left sides of the foot, a heel covering the heel, and a sole covering the sole. hand,
The foot covering has an opening formed by an instep-side opening and a heel-side opening for inserting and removing the foot on opposite sides of the sole,
A semi-finished product integrally knitted by half-rotation knitting using a circular knitting machine using yarns containing heat-fusible fibers, without having a part covering the entire circumference of the tubular leg by full-rotation knitting. The instep part, the foot side part, the heel part, and the sole part are provided in two lines symmetrically, and the planar shape of the semi-finished product when placed on a plane is substantially U-shaped. Holes forming the heel-side opening are provided at positions facing each other on the open side of the substantially U-shape, and the instep-side opening, which is the part on the instep side of the opening, is symmetrical with respect to the center line. a knitting step of knitting a certain semi-finished product;
a forming step of overlapping the instep portions, the side portions of the foot, the heel portions, and the sole portions to form the shape of the entire foot covering;
In the forming step, the instep-side opening that is continuous with the heel-side opening is formed by the center line,
A method for manufacturing a foot covering, characterized in that the heat-fusible fiber maintains the overall shape of the foot covering when the foot is not worn. The forming step includes:
an inside-out step for turning one heel part inside out;
a heel portion forming step of forming the heel portion by superimposing the one heel portion that has been turned inside out on the other heel portion after the turning over step;
an instep forming step of forming the instep part by embedding the one instep part inside out and embedding it in the other instep part;
a foot covering forming step of forming the entire foot covering by overlapping the one foot side portion and sole portion with the other foot side portion and sole portion after the instep forming step; 3. A method of manufacturing a foot covering according to claim 2, characterized by comprising:

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